WO2024248322A1 - Refrigerator - Google Patents

Abstract

An embodiment of the present invention comprises: a cabinet having a storage space formed therein; and a door opening/closing the storage space, wherein the door comprises: a door liner which forms the rear surface of the door and has a liner opening formed therein; a panel assembly which forms at least part of the front surface of the door, and blocks the liner opening so that the rear space of the door can be seen; and an insulating material filled inside the door. The panel assembly comprises a plurality of panels which are arranged to be spaced apart from each other in the back and forth directions, and has a protrusion and a recessed portion formed on the circumference thereof.

Description

refrigerator

The present invention relates to a refrigerator.

In general, a refrigerator is a home appliance that can store food at low temperatures in an internal storage space that is sealed by a door. To this end, the refrigerator is configured to cool the inside of the storage space by using cold air generated through heat exchange with a refrigerant that circulates a refrigeration cycle, thereby allowing the stored food to be stored in an optimal condition.

Recently, refrigerators are becoming larger and more multifunctional in line with the changing eating habits and the trend toward higher quality products, and refrigerators equipped with various structures and convenient devices for the convenience of users and efficient use of internal space are being released.

For example, a refrigerator has been released that has a structure in which a transparent panel assembly is formed on the door so that the storage space behind the door can be seen even when the door is closed. In such a refrigerator, an insulating layer is provided on the panel assembly to maintain insulating performance.

However, although the heat passing through the panel assembly can be effectively blocked by the above-mentioned insulation layer, there is a problem in that the heat transmitted along the perimeter of the panel assembly and the heat transmitted through the spacers constituting the panel assembly cannot be blocked.

This causes the insulation performance of the door to deteriorate and power consumption to increase.

The purpose of the present invention is to provide a refrigerator that improves power consumption by improving the insulation performance of a door that allows internal viewing.

The present invention aims to provide a refrigerator that prevents heat loss through a panel assembly of a door.

The purpose of the present invention is to provide a refrigerator in which the mounting structure of a heater for preventing condensation on a door is improved.

The purpose of the present invention is to provide a refrigerator that prevents underfilling of foam liquid inside the door.

The present invention aims to provide a refrigerator that prevents loss of cold air within a storage space by blocking heat transfer between a plurality of panels constituting a panel assembly.

According to an embodiment of the present invention, a refrigerator comprises: a cabinet having a storage space formed therein; and a door for opening and closing the storage space, wherein the door comprises: a door liner forming a rear surface of the door and having a liner opening formed therein; a panel assembly forming at least a portion of a front surface of the door and blocking the liner opening so that a rear surface of the door can be viewed; and an insulating material filled inside the door, wherein the panel assembly comprises a plurality of panels spaced apart from each other in a front-rear direction, and a protrusion and a recess can be formed around the periphery of the panel assembly.

The panel assembly may include a front panel forming a front surface of the panel assembly; a rear panel forming a rear surface of the panel assembly; a middle panel positioned between the front panel and the rear panel; a first spacer connecting the front panel and the middle panel to form a first airtight insulating layer; and a second spacer connecting the middle panel and the rear panel to form a second airtight insulating layer.

The first spacer is positioned closer to the center of the panel assembly than the second spacer, and the second insulating layer can be formed to protrude further outward than the first insulating layer.

The second insulating layer may protrude further outward than the first insulating layer.

The protrusion may be formed by the outer surface of the middle panel, the rear panel, and the second spacer, and the recess may be formed by the outer surface of the front panel, the middle panel, and the first spacer.

The first and second insulating layers may be in a vacuum state or filled with insulating gas.

A step portion is formed on the outer end of the above intermediate panel so as to have a thinner thickness, and the step portion can be formed between the outer end of the above intermediate panel and the first spacer.

The above middle panel and rear panel are formed to have the same size and can be formed to protrude further outward than the first spacer.

The above-mentioned recessed portion is positioned further forward than the above-mentioned protrusion, and a heater may be provided on the inside of the above-mentioned portion to contact the front panel and heat the front panel.

The above protrusions and recesses can be formed along at least one of the upper surface, lower surface, and left and right sides of the periphery of the panel assembly.

The panel assembly may include a front panel forming a front surface of the panel assembly; a vacuum panel disposed at a rear surface of the front panel and forming a vacuum insulation layer; and a first spacer connecting the front panel and the vacuum panel to form a first airtight insulation layer.

The above protrusion may be formed by a vacuum panel protruding further outward than the first spacer, and the above recess may be formed by the front panel, the front surface of the vacuum panel, and the above first spacer.

The vacuum panel may include: a first panel spaced at the rear of the front panel; a second panel arranged at the rear of the first panel; a third spacer that seals a perimeter between the first panel and the second panel to form the vacuum insulation layer; and a supporting member provided in multiple numbers between the first panel and the second panel to maintain a gap between the first panel and the second panel.

The first panel is formed of a glass material, the second panel is formed of an insulating glass material, and the thickness of the first panel can be formed thinner than the thickness of the second panel.

The panel assembly may include a front panel forming a front surface of the panel assembly; a first vacuum panel disposed on a rear surface of the front panel and forming a first airtight vacuum insulation layer; and a second vacuum panel disposed on a rear surface of the first vacuum panel and forming a second airtight vacuum insulation layer.

The above protrusion may be formed by a second vacuum panel protruding further outward than the first vacuum panel, and the above recess may be formed by the front panel and the front surfaces of the first vacuum panel and the second vacuum panel.

The first vacuum panel may include: a first panel adhered to the rear surface of the front panel; a second panel formed to have the same size as the first panel and positioned at the rear surface of the first panel; and a third spacer connecting the first panel and the second panel to form the first vacuum insulation layer, and the second vacuum panel may include: a third panel adhered to the rear surface of the second panel; a fourth panel formed to have the same size as the third panel and positioned at the rear surface of the third panel; and a fourth spacer connecting the third panel and the fourth panel to form the second vacuum insulation layer.

The third panel may be formed thinner than the fourth panel.

The above door further includes an outer plate formed of a metal material and forming a front surface of the door, a plate opening is formed in the outer plate, and the front surface of the panel assembly can shield the plate opening.

The above door includes a main door that opens and closes a storage space and has an opening formed therein; and a sub-door that is provided in front of the main door and opens and closes the opening, and the panel assembly can be provided on the sub-door.

In another aspect, a refrigerator according to an embodiment of the present invention includes: a cabinet having a storage space formed therein; and a door for opening and closing the storage space, wherein the door includes: a door liner forming a rear surface of the door and having a liner opening formed therein; a front panel forming a front surface of the door and being transparent; a rear panel provided at a rear surface spaced apart from the front panel to shield the liner opening and being transparent; and an insulating member provided between the front panel and the rear panel; wherein the insulating member is characterized in that it is arranged along the perimeter of the front panel and the rear panel to block heat of the rear panel from being transferred to the front panel.

In another aspect, a refrigerator according to an embodiment of the present invention comprises: a cabinet having a storage space formed therein; and a door for opening and closing the storage space, wherein the door comprises: a door liner forming a rear surface of the door and having a liner opening formed therein; a front panel forming a front surface of the door and being transparent; a rear panel provided at a rear portion spaced apart from the front panel to shield the liner opening and being transparent; and a spacer connecting the front panel and the rear panel to form an insulating layer; and an insulating member formed of an insulating material and blocking heat transfer to the spacer may be provided between the spacer and the rear panel and between the spacer and the front panel, respectively.

A refrigerator according to an embodiment of the present invention has the following effects.

According to an embodiment, by forming protrusions and depressions on the periphery of a panel assembly on which an insulation layer is formed, the heat transfer path on the outside of the insulation layer is bypassed, thereby reducing heat transfer and preventing loss of cold air inside the unit, thereby improving power consumption.

In addition, there is an advantage in that heat transfer can be reduced by increasing the thermal resistance of one panel among a plurality of panels forming a panel assembly.

In addition, there is an advantage in that heat loss can be minimized by minimizing the addition of additional configurations and changing the size and arrangement structure of the panels that make up the panel assembly.

In addition, there is an advantage in that the foam injection port for forming insulation inside the door overlaps the protrusion of the panel assembly so that the insulation can be evenly filled, thereby ensuring the insulation properties of the door.

In addition, there is an advantage in that the heater bracket, on which a heater for heating the front surface of the panel assembly is mounted, can be rotated, or a surface-shaped heater can be mounted, thereby improving the assemblability and productivity of the panel assembly.

Figure 1 is a front view of a refrigerator according to the first embodiment of the present invention.

Figure 2 is a drawing of the refrigerator with the door open.

Figure 3 is a perspective view of the door.

Figure 4 is an exploded perspective view of the door.

Figure 5 is a cross-sectional view taken along line 5-5 of Figure 3.

Figure 6 is a cross-sectional view taken along line 6-6 of Figure 3.

Figure 7 is an exploded perspective view of a panel assembly, which is one component of the door.

Figure 8 is a drawing showing the installation process of a heater bracket, which is a component of the above door.

Figure 9 is a rear view of the heater bracket.

Figure 10 is a front view of the heater bracket.

Figure 11 is a drawing showing the heat transfer path of the panel assembly.

FIG. 12 is a drawing showing the arrangement of a heater bracket according to a second embodiment of the present invention.

FIG. 13 is a partially enlarged drawing showing the heater arrangement of a panel assembly according to a second embodiment of the present invention.

FIG. 14 is a cross-sectional view of a panel assembly according to a third embodiment of the present invention with a surface heating element attached thereto.

FIG. 15 is a drawing showing a heat transfer path of a panel assembly according to a fourth embodiment of the present invention.

FIG. 16 is a drawing showing a heat transfer path of a panel assembly according to a fifth embodiment of the present invention.

Fig. 17 is a longitudinal cross-sectional view of a door according to the sixth embodiment of the present invention.

Figure 18 is a cross-sectional view of the above door.

Figure 19 is a rear view of a panel assembly, which is one component of the door.

Figure 20 is an exploded perspective view of the above panel assembly.

Figure 21 is a drawing showing the heat transfer path of the above panel assembly.

FIG. 22 is a drawing showing a heat transfer path of a panel assembly according to the seventh embodiment of the present invention.

Fig. 23 is a longitudinal cross-sectional view of a door according to the eighth embodiment of the present invention.

Figure 24 is a cross-sectional view of the above door.

Figure 25 is an exploded perspective view of a panel assembly, which is one component of the door.

Figure 26 is a drawing showing the heat transfer path of the above panel assembly.

FIG. 27 is a drawing showing a heat transfer path of a panel assembly according to the ninth embodiment of the present invention.

Figure 28 is an exploded perspective view of a door according to the tenth embodiment of the present invention.

Figure 29 is a cross-sectional view of the above door.

Fig. 30 is a cross-sectional view of a door according to the 11th embodiment of the present invention.

Figure 31 is a cross-sectional view showing the heat transfer path of the door.

Fig. 32 is a cross-sectional view showing a heat transfer path according to the 12th embodiment of the present invention.

Fig. 33 is a cross-sectional view showing a heat transfer path according to the 13th embodiment of the present invention.

Fig. 34 is a cross-sectional view showing a heat transfer path according to the 14th embodiment of the present invention.

Fig. 35 is a cross-sectional view of a door according to the 15th embodiment of the present invention.

FIG. 36 is a perspective view of a refrigerator with an open sub-door according to the 16th embodiment of the present invention.

Figure 37 is a front view of other refrigerators to which an embodiment of the present invention is applied.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiments in which the idea of the present invention is presented, and other regressive inventions or other embodiments included within the scope of the idea of the present invention can be easily proposed by adding, changing, deleting, etc. other components.

In addition, the following embodiments will be described by way of example only with reference to a refrigerator in which the refrigerating chamber is located above the freezer chamber for convenience of explanation and understanding, and the present invention is not limited thereto, and it should be made clear in advance that the present invention is applicable to all types of refrigerators equipped with a door including a panel assembly. In addition, it should be made clear in advance that the present invention is applicable not only to refrigerators but also to other electronic products including a door including a panel assembly.

In addition, components included in multiple embodiments of the present invention may be indicated using the same drawing symbols to avoid duplication of description when they are identical components.

Before explanation, the direction is defined. In the embodiment of the present invention, the direction in which the front of the door as shown in FIGS. 1 and 2 faces is defined as front, the direction toward the cabinet based on the front of the door is defined as rear, the direction toward the floor surface on which the refrigerator is installed is defined as downward, and the direction away from the floor surface is defined as upward.

And, when describing the panel assembly, the direction toward the center of the panel assembly can be defined as the inside, and the direction toward the perimeter based on the center of the panel assembly can be defined as the outside.

And, when you want to talk about an undefined direction, you can redefine the direction and explain it based on each drawing.

Fig. 1 is a front view of a refrigerator according to a first embodiment of the present invention. Fig. 2 is a view of the refrigerator with the door open.

As illustrated, a refrigerator (1) according to an embodiment of the present invention includes a cabinet (10) in which a storage space is formed and a door (20) for opening and closing the storage space. For example, the storage space may be partitioned vertically, and a refrigerator (11) may be provided at the top, and a freezer (12, 13) may be provided at the bottom.

The above refrigerator (11) is configured as a single space and can be opened and closed by a pair of refrigerator doors (20a). The above freezer (12, 13) can be provided at the bottom of the above refrigerator (11). In addition, the freezer (12, 13) can be divided into left and right sides to form independent storage spaces, and can be controlled at different temperatures. In addition, the freezer (12, 13) can be opened and closed by a pair of freezer doors (20).

Meanwhile, the refrigerator (11) can be called an upper storage space, and the freezer (12, 13) can be called a lower storage space.

The above door (20) may include a refrigerator door (20a) for opening and closing the refrigerator (11), and a freezer door (20b) for opening and closing the freezer (12, 13). The refrigerator door (20a) and the freezer door (20b) may be provided in pairs on each of the left and right sides. The refrigerator door (20a) may be called an upper door, and the freezer door (20b) may be called a lower door.

At least one of the doors (20) above may include a panel assembly (30) that allows the storage space behind the door to be viewed. For example, the panel assembly (30) may be provided on the refrigerator door (20a), and may be provided on both the left and right refrigerator doors (20a). Of course, the panel assembly (30) may also be provided on the freezer door (20b), and may be provided on at least one of the four doors (20) in total.

The panel assembly (30) may form at least a portion of the front surface of the refrigerator door (20a). The panel assembly (30) is composed of a plurality of panels (31, 32, 33), and the plurality of panels (31, 32, 33) may be formed transparently so as to be see-through. The front surface of the panel assembly (30) may include a see-through portion (311) through which the inside may be seen, and an opaque portion (312) formed around the see-through portion (311). The opaque portion (312) may be referred to as a bezel portion. The opaque portion (312) may be formed in black to cover the rear portion so that the rear portion is not exposed. For example, the opaque portion (312) may be formed by printing.

Hereinafter, the structure of the refrigerator door (20a) will be examined in more detail with reference to the drawings. In addition, hereafter, the refrigerator door (20a) will be referred to as a door (20).

Fig. 3 is a perspective view of the door. And, Fig. 4 is an exploded perspective view of the door. And, Fig. 5 is a cross-sectional view taken along line 5-5 of Fig. 3. And, Fig. 6 is a cross-sectional view taken along line 6-6 of Fig. 3. And, Fig. 7 is an exploded perspective view of a panel assembly, which is a component of the door.

As illustrated, the door (20) may include a panel assembly (30) forming the front of the door (20), a door liner (21) forming the rear, and an insulating material (26) filled between the panel assembly (30) and the door liner (21).

The above door (20) may include an upper cap deco (22) and a lower cap deco (23) forming the upper and lower surfaces of the door (20). The upper cap deco (22) and the lower cap deco (23) may be combined with the panel assembly (30) and the door liner (21).

The above door (20) may further include a side frame (24) forming the left and right sides of the door (20).

The insulating material (26) can be formed by injecting foam into the closed space formed by combining the upper cap deco (22), lower cap deco (23), panel assembly (30), door liner (21), and side frame (24).

The door liner (21) forms the rear surface of the door (20) and may have a liner opening (211) formed in the center. The liner opening (211) penetrates the door liner (21) and may be in contact with the rear surface of the panel assembly (30). That is, the rear surface of the panel assembly (30) may shield the liner opening (211). The liner opening (211) may be in communication with a storage space at the rear surface of the door (20), and thus, the storage space may be viewed through the panel assembly (30). The size of the liner opening (211) may correspond to the size of the viewing portion (311) or may be formed to be somewhat larger.

The above door liner (21) may form a door dike (213) that protrudes rearwardly along the perimeter of the liner opening (211). In addition, a door storage member may be mounted on the inner area of the door dike (213). In addition, the door storage member may be visible through the panel assembly (30).

Meanwhile, the door (20) may include a lighting device (25). The lighting device (25) may illuminate a storage space at the rear of the panel assembly (30), and may allow the storage space to be selectively visualized through the viewing portion (311).

That is, when the lighting device (25) is turned on (ON), the storage space becomes bright and the storage space can be seen through the transparent portion (311). And, when the lighting device (25) is turned off (OFF), the storage space becomes invisible and the transparent portion (311) can be seen as an opaque black color like the opaque portion (312).

The lighting device (25) may be provided at the rear of the panel assembly (30) and may be provided in the door (20) or the storage space. For example, the lighting device (25) may be provided in the door liner (21) and may be positioned at the top of the liner opening (211) to irradiate light downward.

The lighting device (25) may include a light emitting member (252), a light case (251), and a light cover (253). The light emitting member (252) may include a substrate on which a plurality of LEDs are mounted. The light case (251) may be mounted on the door liner (21) to form a space for accommodating the light emitting member (252). In addition, the light case (251) may be arranged to be in contact with the rear surface of the panel assembly (30). In addition, the light cover (253) may shield the opened lower surface of the light case (251) so that light irradiated from the light emitting member (252) may be transmitted.

The lighting device (25) may be provided on both sides of the liner opening (211) rather than on the top of the door (20). In addition, the lighting device (25) may be provided on one side of the storage space of the cabinet (10) rather than on the door (20).

The above panel assembly (30) may include a plurality of panels (31, 32, 33) spaced apart in the front-back direction. In addition, the panel assembly (30) may include a plurality of insulating layers (30a, 30b). The insulating layers (30a, 30b) may be referred to as insulating spaces or insulating areas.

The front of the panel assembly (30) may form at least a portion of the front of the door (20). For example, the front of the panel assembly (30) may form the entire front of the door (20). In addition, the rear of the panel assembly (30) may form a portion of the rear of the door (20) by shielding the liner opening (211).

In detail, the panel assembly (30) may include a front panel (31) forming the front, a rear panel (33) forming the rear, and an intermediate panel (32) positioned between the front panel (31) and the rear panel (33). The front panel (31), the rear panel (33), and the intermediate panel (32) may be formed of a glass material and may be formed in a rectangular plate shape.

For example, the front panel (31) may be formed of a tempered glass material. The front panel (31) may form the entire front surface of the door (20). In addition, the transparent portion (311) may be formed in the center of the front panel (31), and the opaque portion (312) may be formed around the transparent portion (311). The size of the transparent portion (311) may be formed smaller than that of the middle panel (32) and the rear panel (33). In addition, the size of the transparent portion (311) may be formed smaller than that of the liner opening (211).

The above intermediate panel (32) may be provided at the rear of the front panel (31). The intermediate panel (32) may be formed of insulating glass (low-e glass). Of course, the intermediate panel (32) may also be formed of general glass (clear glass). The intermediate panel (32) may be formed with a thickness that satisfies the insulating performance and processability. For example, the thickness of the intermediate panel (32) may be approximately 4 mm.

The above intermediate panel (32) may be formed smaller than the front panel (31) and larger than the liner opening (211). In addition, the above intermediate panel (32) may be formed to have the same size as the rear panel (33).

A first spacer (341) may be provided between the front panel (31) and the middle panel (32). The first spacer (341) may be formed along the periphery of the middle panel (32) and may maintain a gap between the front panel (31) and the middle panel (32). The first spacer (341) may be formed in a rectangular frame shape with an open center, and the front may be adhered to the front panel (31) and the rear may be adhered to the middle panel (32). The first spacer (341) may be formed of a TPS (Thermo plastic spacer) material. That is, it may be formed of an insulating plastic material. The first spacer (341) may also be formed of a metal material such as aluminum. In addition, the interior of the first spacer (341) is configured to be filled with a desiccant so as to remove moisture within the first insulating layer (30a) and improve the insulating performance.

Accordingly, a sealed first insulating layer (30a) can be formed between the front panel (31) and the middle panel (32) while the front panel (31) and the middle panel (32) are adhered to the first spacer (341). The first insulating layer (30a) can provide a structure capable of insulating in a vacuum state. In addition, an insulating gas can be injected into the first insulating layer (30a) to further improve the insulating performance. For example, the insulating gas can be argon (Ar) gas.

The thickness of the first insulation layer (30a) may be formed to be approximately 12 mm to 14 mm, which is the most efficient thickness for insulation while minimizing the increase in door volume. To this end, the thickness of the first spacer (341) may be formed to be approximately 12 mm to 14 mm.

Meanwhile, the outer end of the intermediate panel (32) may protrude further outward than the first spacer (341). That is, the first spacer (341) may be formed somewhat inwardly from the end of the intermediate panel (32) toward the center of the intermediate panel (32). And, the first spacer (341) may be positioned further outward than the liner opening (211).

As illustrated in FIG. 11, the first spacer (341) may be positioned at a position spaced outward by a set distance (L1) based on the inner end of the opaque portion (312). That is, the first spacer (341) is positioned further outward than the transparent portion (311), and thus may be positioned at the rear of the opaque portion (312) so as to be hidden from the outside. The first spacer (341) may be positioned between the outer end of the middle panel (32) and the inner end of the opaque portion (312).

A sealant (342) may be applied to the outer surface of the first spacer (341). The sealant (342) may fill the space between the front panel (31) and the middle panel (32), and may seal the space between the first spacer (341) and the front panel (31) and the middle panel (32). In addition, the sealant (342) may be formed of a silicone material. In addition, the sealant (342) may be omitted, and the first spacer (341) may be arranged up to the sealant (342) area.

The rear panel (33) may be arranged at the rear of the middle panel (32). The rear panel (33) may be formed of insulating glass. In addition, the rear panel (33) may be formed to a thickness of approximately 4 mm to satisfy insulation performance and processability. In addition, the rear panel (33) may be formed to have the same size as the middle panel (32). Therefore, when viewed from the rear, the rear panel (33) and the middle panel (32) may be in a covered state.

A second spacer (343) may be placed between the middle panel (32) and the rear panel (33). The middle panels (32) may be spaced apart from each other by the second spacer (343) to maintain a certain gap. The second spacer (343) may be formed of the same material and shape as the first spacer (341) except for the size and arrangement position.

The middle panel (32) may be adhered to the front surface of the second spacer (343), and the rear panel (33) may be adhered to the rear surface of the second spacer (343). Accordingly, a sealed second insulating layer (30b) may be formed between the middle panel (32) and the rear panel (33) while the front panel (31) and the rear panel (33) are adhered to the second spacer (343). The second insulating layer (30b) may provide a structure capable of insulating in a vacuum state. In addition, an insulating gas may be injected into the second insulating layer (30b) to further improve the insulating performance. For example, the insulating gas may be argon (Ar) gas.

Meanwhile, the second spacer (343) may be arranged along the perimeter of the middle panel (32) and the rear panel (33). And, the second spacer (343) may be arranged along the end of the middle panel (32) and the end of the rear panel (33).

As illustrated in FIG. 11, the second spacer (343) may be positioned at a position spaced outwardly by a set distance (L2) based on the end of the first spacer (341) or the sealant (342). The second spacer (343) may be positioned between the inner end of the opaque portion (312) and the outer end of the rear panel (33). In addition, the second spacer (343) may be positioned further outward than the first spacer (341). That is, the first spacer (341) may be positioned between the inner end of the opaque portion (312) and the second spacer (343).

The first spacer (341) and the second spacer (343) are both positioned at the rear of the opaque portion (312) so that they can be covered by the opaque portion (312) when viewed from the front.

Meanwhile, a sealant (344) may be applied to the outer surface of the second spacer (343). The sealant (344) may fill the space between the middle panel (32) and the rear panel (33), and may seal the space between the second spacer (343) and the middle panel (32) and the rear panel (33). The second spacer (343) may be positioned slightly inside the middle panel (32) and the rear panel (33), and the outer surface of the sealant (344) may form the same plane as the ends of the middle panel (32) and the rear panel (33). In addition, the sealant (344) may be omitted, and the second spacer (343) may be arranged up to the sealant (344) area.

The peripheral surfaces of the above-described middle panel (32), the rear panel (33), and the second spacer (343) can all protrude further outward than the peripheral surface of the first spacer (341). Accordingly, the portion of the above-described middle panel (32), the rear panel (33), and the second spacer (343) that protrudes outward from the first spacer (341) can be called a protrusion (301).

And, by the structure of the protrusion (301), a recessed portion (302) can be formed between the rear surface of the front panel (31), the front surface of the middle panel (32), and the outer surface of the first spacer (341). The interior of the recessed portion (302) can be filled with an insulating material (26), and a heater (44) described below can be arranged to prevent condensation. And, the heat transfer path of the panel assembly (30) can be increased by the protrusion (301) and the recessed portion (302).

Meanwhile, as illustrated in FIG. 6, an injection port (221) may be formed in the upper cap deco (22) into which a foaming liquid is injected for forming the insulating material (26). The injection port (221) may overlap at least a portion of one of the left and right sides of the protrusion (301) when viewed from above. That is, the position of the injection port (221) may be positioned vertically upward corresponding to one of the left and right sides of the middle panel (32) and the rear panel (33). Accordingly, the foaming liquid injected through the injection port (221) may be divided by the protrusion (301), and the foaming liquid may be evenly filled into the area between the front panel (31) and the middle panel (32).

When the foaming liquid is injected through the injection port (221), high pressure is applied, and if the protrusion (301) and the injection port (221) are too close, the flow of the foaming liquid may be obstructed or reversed. To prevent this, the protrusion (301) may be extended to a position that is a set distance from the injection port. For example, the set distance may be 50 mm or more.

At least one of the above injection ports (221) may be provided. In addition, the injection port (221) may be formed in the lower cap deco (23), and in this case, the injection port (221) may be positioned vertically downward from the left and right sides of the middle panel (32) and the rear panel (33).

A heater bracket (40) and a heater (44) may be provided on the rear side of the front panel (31). The heater (44) is arranged along the perimeter of the transparent portion (311) and may be positioned on the rear side of the opaque portion (312). By heating the heater (44), a portion of the front panel (31) is heated, thereby preventing condensation on the front side of the panel assembly (30).

The above heater (44) can be mounted on the heater bracket (40), and the heater bracket (40) can be arranged along the outer surface of the first spacer (341). In addition, the heater bracket (40) can be embedded in the insulation material (26) while being attached to the front panel (31).

Below, the structure of the heater bracket (40) will be examined in more detail with reference to the drawings.

Fig. 8 is a drawing showing the installation process of the heater bracket, which is a component of the door. And, Fig. 9 is a rear view of the heater bracket. And, Fig. 10 is a front view of the heater bracket.

As illustrated, the heater bracket (40) may be arranged along the perimeter of the panel assembly (30). In addition, the heater bracket (40) may be attached to the rear surface of the front panel (31) and may be arranged outside the viewing portion (311). In addition, the heater bracket (40) may be arranged along the outside of the first spacer (341).

The above heater bracket (40) can be formed by injection molding using a plastic material. In addition, the heater bracket (40) can be formed in a rectangular frame shape having upper and lower surfaces and left and right sides. In this case, the heater bracket (40) can be formed by combining a plurality of parts.

The heater bracket (40) may be placed inside the recessed portion (302) formed by the outer surface of the front panel (31), the middle panel (32), and the first spacer (341). The heater bracket (40) may be inserted from the outer side to the inner side of the recessed portion (302) and mounted. In addition, the heater bracket (40) may be fixed inside the recessed portion (302) by connecting a plurality of parts to each other.

For example, the heater bracket (40) may include a lower part (41) forming the lower end of the heater bracket (40), a pair of side parts (42) forming the left and right ends, and an upper part (43) forming the upper end. In addition, the heater bracket (40) may be formed into a rectangular frame shape by combining the lower part (41), the side part (42), and the upper part (43).

The lower part (41) and the upper part (43) can be rotatably connected based on the side part (42). An axial connection part (421) can be formed at the upper and lower ends of the side part (42). In addition, a connection hole (422) can be formed through the axial connection part (421).

A connecting shaft (411) coupled to the shaft connecting portion (421) may be formed at both ends of the lower part (41) connected to the lower end of the side part (42). The connecting shaft (411) may protrude through the connecting hole (422). Accordingly, a pair of the side parts (42) may rotate based on both ends of the lower part (41).

The upper part (43) may be formed as a pair, and may be connected to the upper ends of the side parts (42) arranged on the left and right sides, respectively. The pair of upper parts (43) may be formed with the same length, and the ends facing each other may be connected to each other when assembling the heater bracket (40). A connecting shaft (431) coupled to the shaft connecting portion (421) may be formed at one end of the upper part (43) connected to the upper end of the side part (42). The connecting shaft (431) may protrude by penetrating the connecting hole (422). Therefore, the pair of upper parts (43) may be rotated based on the upper end of the side part (42).

Meanwhile, the heater bracket (40) may include an adhesive portion (401) and a heater mounting portion (402). The adhesive portion (401) may be formed in a flat shape that comes into contact with the rear surface of the front panel (31) and may be adhered by the front panel (31).

The heater mounting portion (402) is formed along one end of the adhesive portion (401) and may be positioned closer to the first spacer (341) among the two ends of the adhesive portion (401). In addition, a heater groove (403) in which the heater (44) is accommodated may be formed in the heater mounting portion (402). The heater mounting portion (402) may be formed thicker than the adhesive portion (401) so that the heater groove (403) is formed. The heater groove (403) may be formed recessed in the front surface of the heater bracket (40) facing the front panel (31).

The above adhesive portion (401) and heater mounting portion (402) can be formed on all of the lower part (41), side part (42), and upper part (43), and can have the same cross-sectional structure.

Meanwhile, the heater (44) may be configured as a wire heater, for example. And, the heater groove (403) may be sunken into a corresponding shape so that the heater (44) can be inserted and received.

A rotation groove (412, 432) may be further formed at both ends of the lower part (41) and the upper part (43). The rotation groove (412, 432) may be formed along the circumference of the connecting shaft (411, 431). In addition, the rotation groove (412, 432) may be formed to be sunken in the front surface of the lower part (41) and the upper part (43) and connected to the heater groove (403).

Accordingly, as illustrated in FIG. 10, the heater (44) can be extended while being accommodated in the heater groove (403) formed in the side part (42). Then, the heater (44) can be guided to the lower part (41) and the upper part (43) through the rotation grooves (412, 432) of the lower part (41) and the upper part (43), and can be guided to the heater grooves (403) of the lower part (41) and the upper part (43).

The heater groove (403) of the upper part (43) can be exposed through the ends of the pair of upper parts (43) facing each other. And, the heater (44) can be inserted and removed through the end of the heater groove (403) opened at the end of the pair of upper parts (43).

Accordingly, even if the lower part (41) and the upper part (43) are rotated, the heater (44) is not detached and is accommodated in the heater groove (403) and the rotation groove (412, 432) so as to maintain a state of being mounted on the heater bracket (40).

Referring to Fig. 9, the process of mounting the heater bracket (40) will be described. The heater bracket (40) can be mounted on the panel assembly (30) in a state where the lower part (41) and the upper part (43) are rotatably connected to both ends of the side part (42). At this time, the heater (44) can also be inserted into the heater groove (403) and the rotation groove (412, 432) of the heater bracket (40).

In order to mount the heater bracket (40), the lower part (41) is inserted into the inner side of the recessed portion (302) that is opened downward. At this time, the side part (42) and the upper part (43) are rotated so as to be positioned further outward than both ends of the lower part (41) so as not to interfere with the panel assembly (30) during the mounting process of the lower part (41).

With the lower part (41) inserted into the recessed portion (302), the side parts (42) on both sides can be rotated based on the two ends of the lower part (41). The side parts (42) are rotated and inserted into the inner side of the recessed portion (302) that is opened on both sides.

With the lower part (41) and the side part (42) inserted into the recessed portion (302), the upper part (43) can be rotated based on the upper end of the side part (42). The upper part (43) can be inserted into the inner side of the recessed portion (302) that has been rotated and opened upward. The pair of upper parts (43) can be fixed to each other by having their ends come into contact with each other through rotation.

Even during the process of relative rotation of the lower part (41), the side part (42) and the upper part (43) for mounting the heater bracket (40), the heater (44) positioned in the rotation groove (412, 413) can remain mounted on the heater bracket (40) without being separated.

The above heater bracket (40) can be attached to the front panel (31) inside the recessed portion (302). When the heater bracket (40) is mounted, the heater (44) can come into contact with the front panel (31) and heat the perimeter of the viewing portion (311).

Below, the heat transfer state of the panel assembly (30) in a refrigerator (1) having the above structure will be examined with reference to the drawing.

Figure 11 is a drawing showing the heat transfer path of the panel assembly.

As illustrated, when the door (20) is closed, cold air in the storage space is blocked by the insulating layer (30a, 30b) of the panel assembly (30), so that it is not transmitted to the front of the door (20) via the shortest path. However, heat transfer by conduction may occur in the peripheral portion of the panel assembly (30) where the insulating layer (30a, 30b) is not formed.

That is, the first spacer (341) and the second spacer (343) arranged on the outer end of the insulating layer (30a, 30b) have relatively lower insulating performance than the insulating layer (30a, 30b), so that heat transfer can occur. However, by designing the heat transfer path from the rear panel (33) to the front panel (31) to be bypassed, the heat transfer path is increased, thereby minimizing the loss of cold air.

In detail, the cold air of the storage space can come into contact with the rear panel (33) through the liner opening (211). The heat of the rear panel (33) is blocked by the second insulation layer (30b) and cannot be transmitted forward, but can be transmitted upward along the rear panel (33). In addition, the heat of the rear panel (33) can be moved forward by the second spacer (343) from the upper end of the rear panel (33) and transmitted to the middle panel (32).

The heat from the upper portion of the above intermediate panel (32) is transferred downward along the intermediate panel (32) and can be transferred to the first spacer (341) at a position where it comes into contact with the first spacer (341). In addition, the heat transferred to the first spacer (341) can be transferred to the front panel (31) along the first spacer (341).

In this way, the cold air inside the storage space is not transferred forward through the shortest path by the insulation layer (30a, 30b), but moves along a bypass heat transfer path formed along the protrusion (301) and the recessed portion (302) formed around the panel assembly (30). Accordingly, the cold air in the storage space can be prevented from being transferred to the front panel (31) through the shortest path and lost.

Meanwhile, for the convenience of explanation and understanding, the heat transfer path at the top of the panel assembly (30) is described as an example, but the above heat transfer path may be provided around the entire perimeter of the panel assembly (30) in which the protrusion (301) and the recessed portion (302) are formed.

Of course, the protrusion (301) and the recessed portion (302) may be formed partially, including one end of the panel assembly (30), and in this case, the heat transfer path as described above may be formed in the area of the panel assembly (30) where the protrusion (301) and the recessed portion (302) are formed.

And, when the protrusions (301) and the recesses (302) are formed in at least two parts of the perimeter of the panel assembly (30) to form a heat transfer path, it may be possible for the lengths of the heat transfer paths to be formed differently.

The present invention can have various other embodiments in addition to the above-described embodiments. Hereinafter, other embodiments of the present invention will be described with reference to the drawings. In addition, the same components as the above-described embodiments among the components illustrated in the drawings of the present embodiment will be designated by the same reference numerals, and their detailed description and illustration will be omitted. In addition, the non-illustrated or omitted components can refer to the components of the above-described embodiments.

Hereinafter, other embodiments of the present invention will be described in more detail with reference to the drawings.

Fig. 12 is a drawing showing the arrangement of a heater bracket according to the second embodiment of the present invention. And, Fig. 13 is a partially enlarged drawing showing the arrangement of a heater of a panel assembly according to the second embodiment of the present invention.

As illustrated, the panel assembly (30) according to the second embodiment of the present invention may include the front panel (31), the middle panel (32), and the rear panel (33) as in the above-described embodiment. The front panel (31) may include a transparent portion (311) and an opaque portion (312).

And, a first spacer (341) may be provided between the front panel (31) and the middle panel (32) to form the first insulation layer (30a). And, a second spacer (343) may be provided between the middle panel (32) and the rear panel (33) to form the second insulation layer (30b).

The above-described middle panel (32), rear panel (33) and second spacer (343) may extend further outward than the first spacer (341) and may form the protrusion (301). In addition, the front panel (31), middle panel (32) and first spacer (341) may be arranged in front of the protrusion (301), and the recessed portion (302) may be formed.

And, a heater (44) and a heater bracket (45) on which the heater (44) is mounted may be provided around the panel assembly (30). The heater (44) and the heater bracket (45) are formed on the rear side of the front panel (31) and may be arranged in the opaque portion (312) so as to be covered without being exposed to the outside. And, the heater (44) and the heater bracket (45) may be positioned on the inside of the recessed portion (302).

The heater (44) may be formed in a wire shape. In addition, the circumference of the transparent portion (311) may be heated by the heat generation of the heater (44), thereby preventing condensation on the front panel (31). In particular, the heater (44) may be provided on the heat transfer path to more effectively block condensation.

The above heater bracket (45) may be composed of multiple pieces and may be arranged on the inside of the recessed portion (302) so as to fix the heater (44). For example, the heater bracket (45) may be composed of four pieces and may be arranged along the perimeter of the first spacer (341).

The above heater bracket (45) may include an upper bracket (451) arranged along the upper end of the viewing portion (311), a lower bracket (452) arranged along the lower end of the viewing portion (311), and a side bracket (453) arranged along the left and right ends of the viewing portion (311).

The upper bracket (451) may correspond to the upper length of the viewing portion (311), the lower bracket (452) may correspond to the lower length of the viewing portion (311), and the side bracket (453) may correspond to the length of the side end of the viewing portion (311).

The upper bracket (451) and lower bracket (452) may be spaced apart from the upper and lower portions of the side bracket (453), respectively. In addition, the upper bracket (451), lower bracket (452) and side bracket (453) may be formed to have the same cross-sectional shape.

A heater receiving groove (450) may be formed on the front of the upper bracket (451), lower bracket (452), and side bracket (453). The heater (44) may be received in the heater receiving groove (450). That is, the heater (44) may be arranged along the heater receiving groove (450), and may be in close contact with the front panel (31) when the upper bracket (451), lower bracket (452), and side bracket (453) are mounted.

Meanwhile, the upper and lower ends of the side bracket (453) may be spaced apart from the ends of the upper bracket (451) and the lower bracket (452). Accordingly, the heater (44) may be bent at the upper and lower ends of the side bracket (453) and may be positioned toward the upper bracket (451) and the lower bracket (452).

By mounting the above heater (44) and heater bracket (45), the periphery of the viewing section (311) can be heated, and condensation in the area in contact with the first spacer (341) can be prevented.

FIG. 14 is a cross-sectional view of a panel assembly according to a third embodiment of the present invention with a surface heating element attached thereto.

As illustrated, the panel assembly (30) according to the third embodiment of the present invention may include the front panel (31), the middle panel (32), and the rear panel (33).

And, the first spacer (341) may be provided between the front panel (31) and the middle panel (32) to form the first insulation layer (30a). And, the second spacer (343) may be provided between the middle panel (32) and the rear panel (33) to form the second insulation layer (30b). And, a sealant (344) may be provided on the outer surfaces of the first spacer (341) and the second spacer (343).

The above-described middle panel (32), rear panel (33) and second spacer (343) may extend further outward than the first spacer (341) and may form the protrusion (301). In addition, the front panel (31), middle panel (32) and first spacer (341) may be arranged in front of the protrusion (301), and the recessed portion (302) may be formed.

Meanwhile, the front panel (31) may include a transparent portion (311) and an opaque portion (312). In addition, a heater (46) may be provided around the transparent portion (311). The heater (46) may be a surface-shaped heating element in the shape of a plate, sheet, or film.

The heater (46) may be arranged along the perimeter of the viewing portion (311), and the front side of the heater (46) may be adhered to the rear side of the front panel (31). In addition, the rear side of the heater (46) may be adhered to the front side of the first spacer (341). That is, the heater (46) may be provided between the front panel (31) and the first spacer (341).

The heater (46) may extend further inwardly with respect to the first spacer (341). That is, a portion of the heater (46) may be positioned inside the first insulating layer (30a). In addition, the heater (46) may extend further outwardly with respect to the first spacer (341). That is, a portion of the heater (46) may be positioned inside the recessed portion (302). The heater (46) may also be formed of a transparent film material.

The circumference of the transparent portion (311) can be heated by the heat generation of the heater (46), and condensation on the front panel (31) can be prevented. In particular, the heater (46) is provided on the heat transfer path to more effectively block condensation.

FIG. 15 is a drawing showing a heat transfer path of a panel assembly according to a fourth embodiment of the present invention.

As illustrated in the drawing, the panel assembly (30) according to the fourth embodiment of the present invention may include the front panel (31), the middle panel (32), and the rear panel (33).

The first spacer (341) may be provided between the front panel (31) and the middle panel to form the first insulation layer (30a). In addition, the second spacer (343) may be provided between the middle panel (32) and the rear panel (33) to form the second insulation layer (30b). In addition, the sealant may be provided.

The above-described middle panel (32) and rear panel (33) may extend further outward than the first spacer (341) and may form the protrusion (301). In addition, the recessed portion (302) may be formed in front of the protrusion (301). The recessed portion (302) may be defined by a space between the outer surfaces of the front panel (31), the rear panel (33), and the first spacer (341), and may be recessed inwardly around the perimeter of the panel assembly (30). The heater bracket (40) having the heater (44) mounted thereon may be provided on the inner side of the recessed portion (302).

Meanwhile, a step portion (322) may be formed on the outer end of the intermediate panel (32). The step portion (322) is formed along the perimeter of the intermediate panel (32) and may be formed to have a thickness (D2) thinner than the overall thickness (D1) of the intermediate panel (32). In addition, the thickness (D2) of the step portion (322) may be formed to be thinner than the thickness (D3) of the second spacer (343).

In detail, the step portion (322) may be formed on the front surface of the intermediate panel (32). The step portion (322) may be formed in the area of the recessed portion (302). The step portion (322) may be formed to extend between the outer end of the intermediate panel (32) and the first spacer (341). When the sealant (342) is applied, the step portion (322) may be formed between the sealant (342) and the outer end of the intermediate panel (32). The step portion (322) may also be formed on the rear surface of the intermediate panel (32) that is in contact with the second spacer (343).

Looking at the heat transfer path of the panel assembly (30), the rear panel (33) can come into contact with the cold air of the storage space. And, the heat of the rear panel (33) can be transferred upward along the rear panel (33) by being blocked from moving forward by the second insulation layer (30b). And, the heat of the rear panel (33) can be transferred from the upper part of the rear panel (33) to the upper part of the middle panel (32) through the second spacer (343).

The heat from the upper portion of the above intermediate panel (32) is transferred downward along the intermediate panel (32) and can be transferred to the first spacer (341). In addition, the heat transferred to the first spacer (341) can be transferred to the front panel (31) along the first spacer (341).

At this time, the heat transferred to the intermediate panel (32) passes through the step portion (322) while heading to the first spacer (341). The step portion (322) is formed to have a thickness (D2) thinner than the overall thickness (D1) of the intermediate panel (32). Therefore, the step portion (322) has a greater thermal resistance, and the heat transfer performance is lowered.

Accordingly, the heat transmitted through the second spacer (343) and passing through the step portion (322) can be transmitted to the first spacer (341) in a state significantly reduced by the thermal resistance of the step portion (322). Then, the heat transmitted through the first spacer (341) is ultimately directed to the front panel (31).

In this way, the cold air inside the storage space is transferred along the bypassed heat transfer path formed by the protrusions and depressions around the panel assembly (30). In addition, the heat transferred along the panel assembly (30) can be reduced compared to before due to the increased thermal resistance of the step (322) during the process of passing through the step (322). Accordingly, the cold air in the storage space can be minimized from being transferred to the front panel (31) and lost.

FIG. 16 is a drawing showing a heat transfer path of a panel assembly according to a fifth embodiment of the present invention.

As illustrated in the drawing, the panel assembly (30) according to the fifth embodiment of the present invention may include the front panel (31), the middle panel (32), and the rear panel (33). In addition, a first spacer (341) may be provided between the front panel (31) and the middle panel (32), so that a first insulating layer (30a) may be formed. In addition, a second spacer (343) may be provided between the middle panel (32) and the rear panel (33), so that a second insulating layer (30b) may be formed. The first insulating layer (30a) and the second insulating layer (30b) may be vacuum-filled or filled with an insulating gas.

The sizes of the front panel (31) and the middle panel (32) may be formed to be the same, and the first spacer (341) may be arranged along the perimeter of the front panel (31) and the middle panel (32). In addition, a sealant (342) may be applied to the outer surface of the first spacer (341).

The rear panel (33) may be formed to have a smaller size than the front panel (31) and the rear panel (33). In addition, a second spacer (343) may be arranged between the front panel (31) and the rear panel (33). The second spacer (343) may be arranged along the perimeter of the rear panel (33). In addition, a sealant (344) may be applied to the outer surface of the second spacer (343). The second spacer (343) may have the same structure as the first spacer (341) except for the different location.

Accordingly, the outer end of the first insulation layer (30a) may be positioned further outward than the outer end of the second insulation layer (30b). That is, the second insulation layer (30b) may be formed with a step inward based on the second insulation layer (30b).

The front panel (31) may be formed of a tempered glass material. In addition, the front panel (31) may be formed with the transparent portion (311) and the opaque portion (312). The size of the transparent portion (311) may be formed smaller than the size of the rear panel (33) and the size of the liner opening (211). That is, the inner end of the opaque portion (312) may extend further inward than the rear panel (33) and the second spacer (343). Therefore, when the rear of the door is viewed through the transparent portion (311), the end of the rear panel (33) and the second spacer (343) may not be directly exposed.

Based on the second spacer (343), the front panel (31), the middle panel (32) and the first spacer (341) can further protrude outward to form a protrusion (301). Also, based on the first spacer (341), the middle panel (32) and the second spacer (343) can be positioned inwardly to form a recessed portion (302).

Meanwhile, the protrusion (301) and the recessed portion (302) may be formed entirely along the perimeter of the panel assembly (30). And, the protrusion and recessed distances of the protrusion (301) and the recessed portion (302) may be different from each other at the top and bottom or at the left and right sides. Of course, the protrusion (301) and the recessed portion (302) may be formed on a part of the perimeter of the panel assembly (30).

And, both the first spacer (341) and the second spacer (343) can be arranged within the area of the opaque portion (312). The opaque portion (312) can extend inwardly from an end of the front panel (31), but can extend further inwardly than the second spacer (343). That is, the distance (L3) from the outer end of the front panel (31) to the transparent portion (311) can be formed longer than the distance (L4) from the outer end of the front panel (31) to the inner end of the second spacer (343).

Looking at the heat transfer path of the panel assembly (30), the cold air of the storage space comes into contact with the rear panel (33), and the heat generated by the rear panel (33) is prevented from moving forward by the second insulating layer (30b), but is transferred upward and can be transferred to the second spacer (343).

The heat passing through the second spacer (343) is transferred to the middle panel (32), and is prevented from moving forward by the first insulation layer (30a) in the middle panel (32) and is transferred upward along the middle panel (32). The heat transferred upward along the middle panel (32) can be transferred to the front panel (31) through the first spacer (341).

In this way, the heat transfer path of the panel assembly (30) protrudes upward by the protrusion (301) and the recessed portion (302) to provide a bypassed heat transfer path. Accordingly, the cold air in the storage space is not transferred to the front panel (31) through the shortest path, but moves along the bypassed heat transfer path, thereby minimizing cold air loss.

Fig. 17 is a longitudinal cross-sectional view of a door according to the sixth embodiment of the present invention. And, Fig. 18 is a transverse cross-sectional view of the door. And, Fig. 19 is a rear view of a panel assembly, which is a component of the door. And, Fig. 20 is an exploded perspective view of the panel assembly.

As illustrated, the door (20) according to the sixth embodiment of the present invention may include a panel assembly (30), the door liner (21), the upper cap deco (22), the lower cap deco (23), and the side frame (24). In addition, the interior of the door (20) may be filled with the insulating material (26).

The above panel assembly (30) forms the front of the door (20) when mounted on the door (20) and can shield the liner opening (211) of the door liner (21).

The above panel assembly (30) may be composed of a plurality of panels (31,). For example, the panel assembly (30) may include the front panel (31) and the vacuum panel (35).

The front panel (31) may form the front of the door (20). The front panel (31) may form at least a part of the front of the door (20). In addition, the front panel (31) may include a transparent portion (311) through which the storage space at the rear of the door (20) may be viewed, and an opaque portion (312) formed around the transparent portion (311). In addition, the front panel (31) may be formed of a tempered glass material.

The above vacuum panel (35) may be formed to have a smaller size than the front panel (31) and may be formed to have a larger size than the liner opening (211). The above vacuum panel (35) may be called vacuum insulating glass (VIG).

A first spacer (341) may be provided between the front panel (31) and the vacuum panel (35). The first spacer (341) may be referred to as a vacuum spacer. A first insulating layer (30a) may be formed between the front panel (31) and the vacuum panel (35) by the first spacer (341). The first insulating layer (30a) may be in a vacuum state or in a state filled with an insulating gas.

The front surface of the first spacer (341) can be in contact with the back surface of the front panel (31). And, it can be arranged along the outer side of the transparent portion (311), that is, the opaque portion (312). And, the rear surface of the first spacer (341) can be in contact with the front surface of the vacuum panel (35). At this time, the first spacer (341) can be positioned further inward than the outer end of the vacuum panel (35). And, the first spacer (341) can be positioned further inward than the third spacer (353) of the vacuum panel (35).

Accordingly, the outer end of the vacuum panel (35) may protrude further outward than the first spacer (341). The portion of the vacuum panel (35) that protrudes outwardly with respect to the first spacer (341) may be referred to as a protrusion (301). In addition, a recessed portion (302) may be formed in the space formed by the front panel (31), the vacuum panel (35), and the first spacer (341) with respect to the outer end of the vacuum panel (35). In addition, a heat transfer path bypassed by the protrusion (301) and the recessed portion (302) may be formed in the panel assembly (30).

A heater bracket (40) containing a heater (44) may be mounted on the inside of the above-mentioned recessed portion (302). In addition, the insulating material (26) filled in the door (20) may be filled up to the inside of the above-mentioned recessed portion (302).

In order to form the above insulation material (26), an injection port (221) into which a foaming liquid is injected may be formed in the upper cap deco (22). The injection port (221) may be positioned on an extension line of both ends of the vacuum panel (35). Accordingly, the foaming liquid injected through the injection port (221) may be injected while being divided by the ends of the vacuum panel (35), and may be evenly filled up to the inside of the recessed portion (302).

In addition, the door liner (21) may be equipped with a lighting device (25) that allows the transparent portion (311) to be selectively visible.

The above vacuum panel (35) may include a first panel (351), a second panel (352), and a third spacer (353). The first panel (351) and the second panel (352) may have the same size and shape, and may be spaced apart from each other with the third spacer (353) therebetween. At least one of the first panel (351) and the second panel (352) may be formed of insulating glass. For example, the first panel (351) positioned at the front may be formed of clear glass, and the second panel (352) positioned at the rear may be formed of insulating glass (low-e glass).

In addition, the third spacer (353) may be formed along the perimeter of the first panel (351) and the second panel (352), and may allow the first panel (351) and the second panel (352) to be bonded in a vacuum state. At this time, the third spacer (353) may extend inwardly from the ends of the first panel (351) and the second panel (352), but may be positioned further outward than the first spacer (341).

The third spacer (353) may be formed of an adhesive material and may seal the space between the first panel (351) and the second panel (352). Therefore, the third spacer (353) may also be called a sealing member. In addition, the third spacer (353) is composed of different materials from the first spacer (341), and may also be called a vacuum spacer to distinguish it.

For example, the third spacer (353) may be formed of a frit material. In addition, the third spacer (353) may be composed of frit glass or glass sealant. When the third spacer (353) is formed of a frit material, it may be bonded between the first panel (351) and the second panel (352) through plastic processing, thereby sealing the first panel (351) and the second panel (352).

In a state where the third spacer (353) is plastically processed between the first panel (351) and the second panel (352), a vacuum insulation layer (30c) can be formed between the first panel (351), the second panel (352) and the third spacer (353). The cold air at the rear of the vacuum panel (35) can be blocked from being transmitted to the front by the vacuum insulation layer (30c).

Meanwhile, a plurality of supporting members (354) may be provided within the vacuum insulation layer (30c). The front of the supporting member (354) may be in contact with the first panel (351) and the rear may be in contact with the second panel (352). In addition, the supporting member (354) may be formed to have a height corresponding to the thickness of the vacuum insulation layer (30c). The supporting member (354) may be formed of a transparent material. In addition, a plurality of supporting members (354) may be arranged at regular intervals over the entire area of the vacuum insulation layer (30c).

The above vacuum insulation layer (30c) may be formed to a thickness that can effectively block the transfer of cold air from the storage space. For example, the vacuum insulation layer (30c) may be formed to a thickness of approximately 0.1 mm to 1 mm. If the thickness of the vacuum insulation layer (30c) is thinner than 0.1 mm, the first panel (351) and the second panel (352) may be deformed and come into contact with each other during the exhaust process, and if it is larger than 1 mm, the size of the supporting member (354) may increase, which may result in a decrease in the insulation performance due to heat transfer and a decrease in the visibility of the transparent portion. Therefore, the vacuum insulation layer (30c) may be formed to a thickness of approximately 0.1 mm to 1 mm. In addition, the thickness of the third spacer (353) and the supporting member (354) can also be formed to be the same as the thickness of the vacuum insulation layer (30c), and can be formed to be approximately 0.1 mm to 1 mm.

An exhaust hole (355) may be formed in the second panel (352). The exhaust hole (355) may be communicated with the vacuum insulation layer (30c) to allow air in the vacuum insulation layer (30c) to be exhausted, and may cause the vacuum insulation layer (30c) to be in a vacuum state. The exhaust hole (355) may be located in an inner region than the third spacer (353) to discharge air in the vacuum insulation layer (30c).

At this time, the exhaust hole (355) may be located outside the first spacer (341) and may be located on the protrusion (301). Accordingly, the exhaust hole (355) may be covered by the opaque portion (312) at the front.

The exhaust hole (355) may be provided with a hole cover (356). The hole cover (356) may be formed of a material that shields the exhaust hole (355) after exhaust of the vacuum insulation layer (30c). For example, the hole cover (356) may be formed of a frit material. In addition, the hole cover (356) may also be covered by the opaque part (312) when mounted.

Below, the heat transfer path of the panel assembly (30) having the above structure will be examined.

Figure 21 is a drawing showing the heat transfer path of the above panel assembly.

As illustrated, the rear surface of the vacuum panel (35), i.e., the second panel (352), comes into contact with the cold air of the storage space. At this time, the cold air is blocked by the vacuum insulation layer (30c) and the first insulation layer (30a) and is not directly transmitted to the front.

Accordingly, the heat of the second panel (352) can be transferred upwardly along the second panel (352). And, the heat of the second panel (352) is transferred from the upper part of the second panel (352) to the third spacer (353) and transferred to the upper part of the first panel (351) through the third spacer (353).

The heat transferred to the upper part of the first panel (351) is transferred downward along the first panel (351). In addition, the heat of the first panel (351) is blocked from moving forward by the first insulation layer (30a), and can be transferred forward by the first spacer (341) to the front panel (31).

In this way, the heat of the storage space is bypassed along the heat transfer path including the protrusion (301) and the recess (302) around the panel assembly (30). In addition, the heat transferred in the process of bypassing along the heat transfer path is minimized, thereby minimizing the loss of cold air in the storage space.

FIG. 22 is a drawing showing a heat transfer path of a panel assembly according to the seventh embodiment of the present invention.

As illustrated, the panel assembly (30) according to the seventh embodiment of the present invention has the same configuration as the sixth embodiment described above, with the only difference being the structure of the vacuum panel (35).

A panel assembly (30) according to a seventh embodiment of the present invention may include the front panel (31), the vacuum panel (35), and the first spacer (341). In addition, the vacuum panel (35) may include a first panel (357), a second panel (352), and a third spacer (353). The first panel (357) may be formed of clear glass, and the second panel (352) may be formed of an insulating panel (low-e glass).

In detail, the first panel (357) and the second panel (352) are formed with the same size, and a vacuum insulation layer (30c) may be formed between the first panel (357) and the second panel (352). At this time, the thickness (D4) of the first panel (357) may be formed thinner than the thickness (D3) of the second panel (352). For example, the second panel (352) may be formed with 4 mm thick insulating glass, and the first panel (357) may be formed with 3 mm thick general glass. In particular, since the first panel (357) is formed with a general glass material, a coating layer may be omitted compared to the insulating glass, and thus a thickness reduction may be possible.

Considering insulation efficiency and weight, the thickness of the second panel (352) is preferably about 4 mm. In addition, since the thickness of the first panel (357) may be deformed during the exhaust process of the vacuum insulation layer (30c) if it is made too thin, it is preferably formed to be about 3 mm to prevent deformation and increase the heat resistance effect.

In this structure, the panel assembly (30) in contact with the cold air of the storage space undergoes heat transfer along a heat transfer path formed on the perimeter.

In particular, the heat of the second panel (352) coming into contact with the cold air of the storage space is prevented from moving forward by the vacuum insulation layer (30c), but is moved upward and then transferred to the third spacer (353). Then, the heat of the third spacer (353) can be transferred to the first panel (357).

At this time, the thermal resistance of the first panel (357) may increase due to the reduced single-ended section. Accordingly, the heat passing through the first panel (357) may be further reduced, and the heat transferred to the first spacer (341) through the first panel (357) may be further reduced.

That is, heat transfer is performed along a heat transfer path bypassed around the panel assembly (30) by the protrusion (301) and recessed (302) structures, and heat resistance is increased by the thickness reduction structure of the first panel (357), thereby minimizing heat transfer through the panel assembly (30). Accordingly, it is possible to minimize the loss of cold air in the storage space by being transferred to the front panel (31).

Fig. 23 is a longitudinal cross-sectional view of a door according to the eighth embodiment of the present invention. Fig. 24 is a transverse cross-sectional view of the door. Fig. 25 is an exploded perspective view of a panel assembly, which is a component of the door.

As illustrated, the panel assembly according to the eighth embodiment of the present invention has the same configuration as the sixth embodiment described above, but may have a difference only in the structure of the panel assembly (30).

A door (20) according to the eighth embodiment of the present invention may include a door liner (21) having a liner opening (211) formed therein, and a panel assembly (30) that shields the liner opening (211) and forms a front surface of the door (20).

The door (20) above includes an upper cap deco (22) in which the injection port (221) is formed, and may further include the lower cap deco (23) and a side frame (24). In addition, an insulating material (26) may be formed in the inner space of the door (20) by the foaming liquid injected through the injection port (221). In addition, the door (20) may further include the lighting device (25).

Meanwhile, the panel assembly (30) may include a front panel (31) forming the front, a first vacuum panel (36) and a second vacuum panel (37) sequentially arranged at the rear of the front panel (31).

The front panel (31) may form at least a portion of the front of the door (20). In addition, the front panel (31) may include a transparent portion (311) that overlaps at least a portion of the liner opening (211) to allow viewing of the inside of the storage space. In addition, the front panel (31) may include an opaque portion (312) formed from the periphery of the transparent portion (311) to the outer end of the front panel (31).

And, a first vacuum panel (36) including a first vacuum insulation layer (30d) may be arranged at the rear of the front panel (31). And, a second vacuum panel (37) including a second vacuum insulation layer (30e) may be provided at the rear of the first vacuum panel (36).

In detail, the first vacuum panel (36) and the second vacuum panel (37) may have a size smaller than the size of the front panel (31). And, the first vacuum panel (36) may have a size smaller than the second vacuum panel (37).

Accordingly, a recessed portion (302) may be formed between the outer side of the first vacuum panel (36), that is, the rear side of the front panel (31) and the front side of the second vacuum panel (37). In addition, the periphery of the second vacuum panel (37) may further protrude from the outer end of the first vacuum panel (36) to form a protrusion (301). Accordingly, a heat transfer path may be formed along the protrusion (301) and the recessed portion (302) on the periphery of the panel assembly (30) in which heat is transferred. The heat transfer path may be formed to bypass the storage space to the front panel (31).

In addition, the first vacuum panel (36) and the second vacuum panel (37) may have the same structure as the vacuum panel (35) of the above-described embodiment, except for the placement position and size.

In detail, the first vacuum panel (36) may include a first panel (361), a second panel (362), and a third spacer (363) provided between the first panel (361) and the second panel (362). The first panel (361) and the second panel (362) may be formed to have the same size and may be arranged side by side in the front-back direction. In addition, the third spacer (363) may be formed along the perimeter of the first panel (361) and the second panel (362).

In a state where the third spacer (363) is plastically processed between the first panel (361) and the second panel (362), a first vacuum insulation layer (30d) can be formed between the first panel (361), the second panel (362) and the third spacer (363).

Meanwhile, the first vacuum insulation layer (30d) may be provided with a plurality of first supporting members (364). The first supporting member (364) may have a front surface in contact with the first panel (361) and a rear surface in contact with the second panel (362), so that the first panel (361) and the second panel (362) may maintain a constant overall distance.

An exhaust hole (365) may be formed in the first panel (361). The exhaust hole (365) may be communicated with the first vacuum insulation layer (30d) to allow air in the first vacuum insulation layer (30d) to be exhausted, and may cause the vacuum insulation layer (30d) to be in a vacuum state. In addition, the exhaust hole (365) may be shielded by a hole cover (366). The exhaust hole (365) and the hole cover (366) may be positioned in an inner region than the third spacer (363) to discharge air in the first vacuum insulation layer (30d). In addition, the exhaust hole (365) and the hole cover (366) may be formed in the first panel (361) so as not to interfere with the second vacuum panel (37). Additionally, the exhaust hole (365) and the hole cover (366) may be formed at a location shielded by the opaque portion (312).

Meanwhile, an adhesive member (367) may be provided between the front panel (31) and the first vacuum panel (36). The adhesive member (367) may be formed of a transparent material and may be formed in a size corresponding to that of the first panel (361). For example, the adhesive member (367) may be formed in a film or sheet shape and may be formed of an optically clear adhesive (OCA).

In addition, the adhesive member (377) can be placed between the first vacuum panel (36) and the second vacuum panel (37) so that the first vacuum panel (36) and the second vacuum panel (37) can be adhered to each other.

The second vacuum panel (37) is positioned at the rear of the first vacuum panel (36) and may have the same structure as the first vacuum panel (36). That is, the second vacuum panel (37) may include a third panel (371), a fourth panel (372), a fourth spacer (373), and a second supporting member (374).

In addition, the fourth panel (372) may be provided with an exhaust hole (375) and a hole cover (376). The exhaust hole (375) and the hole cover (376) may be formed in the fourth panel (372) at a location that does not interfere with the first vacuum panel (36).

The third panel (371) and the fourth panel (372) are formed to have the same size and are spaced apart from each other in the front-back direction to form a second vacuum insulation layer (30e) therebetween. In addition, the third panel (371) and the fourth panel (372) can be formed to have a size larger than that of the first vacuum panel (36).

That is, the upper and lower ends and left and right sides of the third panel (371) and the fourth panel (372) may protrude further outward than the first vacuum panel (36) to form a protrusion (301). In addition, the upper and lower ends and left and right sides of the first panel (361) and the second panel (362) may be recessed further inward than the second vacuum panel (37) to form a recess (302). Accordingly, a heat transfer path bypassed by the protrusion (301) and recess (302) around the panel assembly (30) may be formed.

The structure of the panel assembly (30) as described above can be configured to have a significantly thinner overall thickness compared to the embodiments described above while forming the first vacuum insulation layer (30d), the second vacuum insulation layer (30e), the recessed portion (302), and the protruding portion (301).

Figure 26 is a drawing showing the heat transfer path of the above panel assembly.

As illustrated, the rear side of the panel assembly (30), i.e., the fourth panel (372), comes into contact with the cold air of the storage space. At this time, the heat of the storage space is blocked by the first vacuum insulation layer (30c) and the second vacuum insulation layer (30e) and is prevented from being directly transmitted to the front.

Accordingly, the heat of the fourth panel (372) is transferred upwardly along the fourth panel (372), and then transferred from the top of the fourth panel (372) to the third panel (371) through the fourth spacer (373). Then, the heat of the top of the third spacer (363) is transferred downwardly along the third panel (371).

Heat transferred to the lower part of the third panel (371) can be transferred to the second panel (352) that is in contact with each other. Heat transferred to the upper part of the second panel (352) can be transferred to the upper part of the first panel (361) through the third spacer (363). In addition, heat transferred to the first panel (361) can be transferred to the front panel (31) that is in contact with the first panel (361).

At this time, the heat of the storage space cannot be transferred to the front panel (31) by the shortest distance due to the first vacuum insulation layer (30d) and the second vacuum insulation layer (30e), and is transferred to the front panel (31) by way of a heat transfer path formed by the protrusion (301) and the recessed portion (302). Accordingly, the heat transferred to the front panel (31) is minimized, thereby minimizing the loss of cold air in the storage space.

FIG. 27 is a drawing showing a heat transfer path of a panel assembly according to the ninth embodiment of the present invention.

As illustrated in the drawing, the panel assembly (30) according to the ninth embodiment of the present invention has the same configuration as the eighth embodiment described above, but may have a difference only in the structure of the first panel (368) and the third panel (368).

A panel assembly (30) according to a ninth embodiment of the present invention may include the front panel (31), the first vacuum panel (36), and the second vacuum panel (37). In addition, the first vacuum panel (36) may include a first panel (368), a second panel (362), and a third spacer (363). In addition, the second vacuum panel (37) may include a third panel (378), a fourth panel (372), and a fourth spacer (373). The first panel (368) and the third panel (378) may be formed of clear glass, and the second panel (362) and the fourth panel (372) may be formed of low-e glass.

And, a first vacuum insulating layer (30d) may be formed between the first panel (368) and the second panel (362). At this time, the thickness (D6) of the first panel (368) may be formed thinner than the thickness (D5) of the second panel (362). For example, the second panel (362) may be formed of insulating glass having a thickness of 4 mm, and the first panel (368) may be formed of general glass having a thickness of 3 mm. Accordingly, the cross-sectional area of the first panel (368) may be formed smaller than that of the second panel (362).

And, a second vacuum insulating layer (30e) may be formed between the third panel (378) and the fourth panel (372). At this time, the thickness (D6) of the third panel (378) may be formed thinner than the thickness (D5) of the fourth panel (372). For example, the fourth panel (372) may be formed of insulating glass having a thickness of 4 mm, and the third panel (378) may be formed of general glass having a thickness of 3 mm. Accordingly, the cross-sectional area of the third panel (378) may be formed smaller than that of the fourth panel (372). And, the thickness (D6) of the first panel (368) and the third panel (378) may be the same, and the thickness (D5) of the second panel (362) and the fourth panel (372) may be the same.

In addition, the protrusion (301) and the recessed portion (302) are formed around the periphery of the panel assembly (30) to provide a bypass heat transfer path.

In this structure, the panel assembly (30) in contact with the cold air of the storage space undergoes heat transfer along a heat transfer path.

In particular, the heat of the fourth panel (372) coming into contact with the cold air of the storage space is prevented from moving forward by the second vacuum insulation layer (30e) and moves upward along the fourth panel (372). Then, the heat of the fourth panel (372) can be transferred to the third panel (378) through the fourth spacer (373). At this time, the third panel (378) can have a structure with a reduced cross-sectional area. Therefore, the thermal resistance of the heat moving downward along the third panel (378) can be increased. Therefore, the heat passing through the third panel (378) can be further reduced.

The heat moving downward along the third panel (378) can be transferred to the first panel (368) through the upper end of the second panel (362) and the third spacer (363). At this time, the first panel (368) also has a structure with a decreasing cross-sectional area, and the thermal resistance of the transferred heat can be increased. In addition, the heat transferred to the front panel (31) through the first panel (368) can be further reduced. Accordingly, the transfer of cold air from the storage space to the front panel (31) can be minimized.

Of course, it would be possible to form the third panel (378) thinner than the second panel (362) and the fourth panel (372), and form the first panel (368) to have the same thickness as the second panel (362).

Fig. 28 is an exploded perspective view of a door according to the tenth embodiment of the present invention. And, Fig. 29 is a longitudinal cross-sectional view of the door.

As illustrated in the drawing, the door (50) according to the tenth embodiment of the present invention may include an outer plate (51), a door liner (52), and a panel assembly (30).

The above outer plate (51) is formed of a metal material and can form a part of the front exterior of the door (50). A plate opening (511) through which the front of the panel assembly (30) is exposed can be formed in the above outer plate (511). A plate bending portion (512) bent inwardly can be further formed in the above plate opening (511).

The above door liner (52) is injection-molded from a plastic material and can form the rear exterior of the door (20). In addition, a gasket (56) can be mounted around the perimeter of the door liner (52). In addition, a liner opening (521) through which the rear of the panel assembly (30) is exposed can be formed in the door liner (52). A lighting device (57) can be provided at the top of the liner opening (521).

The panel assembly (30) may have a structure similar to the embodiments described above. For example, the panel assembly (30) may include a front panel (31), a middle panel (32), and a rear panel (33). In addition, the panel assembly (30) may be provided with a first spacer (341) between the front panel (31) and the middle panel (32), and a second spacer (343) between the middle panel (32) and the rear panel (33) to form the first insulating layer (30a) and the second insulating layer (30b). In addition, the front panel (31) may shield the plate opening (511), and the rear panel (33) may shield the liner opening (521).

Meanwhile, a heater bracket (55) may be provided around the periphery of the panel assembly (30). The heater bracket (55) is composed of an upper bracket (551), a lower bracket (552), and a side bracket (553), and may be mounted on the upper and lower sides and left and right sides of the panel assembly (30). In addition, a bending groove (555) into which the plate bending portion (512) is inserted may be formed in the heater bracket (55). Accordingly, the panel assembly (30) may be maintained in a state where it is fixed to the outer plate (51) while the heater bracket (55) is mounted.

And, a heater groove (554) in which the heater (44) is mounted may be formed in the heater bracket (55). The heater (44) may contact the front panel (31) while being accommodated in the heater groove (403) to heat the front panel (31). And, the heater bracket (55) may be arranged on the outer side of the first spacer (341), that is, on the inner side of the recessed portion (302).

The door (20) may include an upper cap deco (22) forming the upper surface, a lower cap deco (23) forming the lower surface, and a side frame (24) forming the left and right sides. When the door (20) is assembled, a foaming liquid may be injected into the interior of the door (20) to form an insulating material (26). The insulating material (26) may be filled so as to be in contact with the peripheral surface of the panel assembly (30). That is, the insulating material (26) may fill the interior of the recessed portion (302) and may be in contact with the outer surface of the protruding portion (301).

And, a bypass heat transfer path can be formed by the protruding shape of the protrusion (301) and the sunken shape of the recessed portion (302). Therefore, the cold air in the storage space is not directly transferred to the front panel (31) by the first insulation layer (30a) and the second insulation layer (30b), but is transferred along a long bypass heat transfer path, so there is an advantage in that the loss of the cold air can be prevented.

Fig. 30 is a cross-sectional view of a door according to the 11th embodiment of the present invention. And, Fig. 31 is a cross-sectional view showing a heat transfer path of the door.

As described above, the door (20) of the refrigerator (1) according to the eleventh embodiment of the present invention may include a panel assembly (30) forming the front surface of the door (20), a door liner (21) forming the rear surface, and an insulating material (26) filled between the panel assembly (30) and the door liner (21). The door (20) may include an upper cap deco (22) and a lower cap deco (23) forming the upper and lower surfaces of the door (20). The door (20) may further include a side frame (24) forming the left and right sides of the door (20). An insulating material (26) may be provided inside the door (20).

The door liner (21) may be formed with an inner opening (211) that is shielded by the rear of the panel assembly (30). The door liner (21) may include a door die (213) that protrudes rearwardly along the perimeter of the liner opening (211).

Meanwhile, the door (20) may include a lighting device (25). The lighting device (25) may be provided at the rear of the panel assembly (30) and may be provided at the top of the liner opening (211).

The above panel assembly (30) may include a front panel (31) and a rear panel (33) that are spaced apart in the front-back direction. In addition, the panel assembly (30) may include an intermediate panel (32) that is arranged between the front panel (31) and the rear panel (33). In addition, the panel assembly (30) may include a plurality of insulating layers (30a, 30b).

The front panel (31) above can form the entire front surface of the door (20). In addition, the transparent portion (311) can be formed in the center of the front panel (31), and the opaque portion (312) can be formed around the transparent portion (311).

Meanwhile, an insulating member (34) may be provided between the front panel (31) and the rear panel (33). The insulating member (34) may allow the front panel (31) and the rear panel (33) to maintain a certain gap, and may form the insulating layer (30a, 30b). Therefore, the insulating member (34) may also be called a spacer.

And, the insulating member (34) can block heat transfer between the front panel (31) and the rear panel (33). To this end, the insulating member (34) can be formed of an insulating material. The insulating member (34) can be formed of a material that has strength for connecting the front panel (31) and the rear panel (33) and can satisfy insulation performance. For example, the insulating member (34) can be formed of a plastic material, and can be formed of a TPS (Thermo plastic spacer) material.

The above insulating member (34) can form a perimeter surface of the panel assembly (30) when mounted, and can come into contact with the insulating material filled inside the door (20). In addition, the above insulating member (34) can be formed in a rectangular frame shape with an open center.

The above insulating member (34) may include a first insulating portion (345), a second insulating portion (346), and a connecting portion (347). The connecting portion (347) may connect the first insulating portion (345) and the second insulating portion (346). The first insulating portion (345), the second insulating portion (346), and the connecting portion (347) may be integrally formed and configured as a single component.

The first insulation part (345) may be provided between the front panel (31) and the middle panel (32). The first insulation part (345) may be formed along the perimeter of the middle panel (32) and may maintain a gap between the front panel (31) and the middle panel (32). The first insulation part (345) may have a front side adhered to the front panel (31) and a rear side adhered to the middle panel (32).

In a state where the front panel (31) and the middle panel (32) are adhered to the first insulation portion (345), a sealed first insulation layer (30a) can be formed between the front panel (31) and the middle panel (32). The first insulation layer (30a) can provide a structure capable of insulation in a vacuum state. In addition, an insulation gas can be injected into the first insulation layer (30a) to further improve the insulation performance. For example, the insulation gas can be argon (Ar) gas.

The second insulation part (346) may be provided between the middle panel (32) and the rear panel (33). The middle panels (32) may be spaced apart from each other by the second insulation part (346) to maintain a certain gap. The second insulation part (346) may be formed with the same size and shape as the first insulation part (345).

The middle panel (32) may be adhered to the front surface of the second insulation portion (346), and the rear panel (33) may be adhered to the rear surface of the second insulation portion (346). Accordingly, a sealed second insulation layer (30b) may be formed between the middle panel (32) and the rear panel (33) while the front panel (31) and the rear panel (33) are adhered to the second insulation portion (346). The second insulation layer (30b) may provide a structure capable of insulation in a vacuum state. In addition, an insulation gas may be injected into the second insulation layer (30b) to further improve the insulation performance. For example, the insulation gas may be argon (Ar) gas.

The above insulation parts (345, 346) may be further formed according to the number of the panels (31, 32, 33) constituting the panel assembly (30). That is, in the embodiment of the present invention, two insulation parts (345, 346) are provided between three panels (31, 32, 33), but the panel assembly (30) may be composed of four or more panels, and in this case, three or more insulation parts may be provided.

The first insulation part (345) may be positioned on the inner side slightly away from the ends of the middle panel (32) and the front panel (31). And, the second insulation part (346) may be positioned on the inner side slightly away from the ends of the middle panel (32) and the rear panel (33).

Accordingly, while the first insulation member (345) is mounted on the middle panel (32) and the front panel (31), a first recessed portion (349a) and a second recessed portion (346a) can be formed around the perimeter of the panel assembly (30). Then, the insulation material (26) filled in the door (20) can come into contact with the insulation member (34) and the perimeter of the panel assembly (30) while filling the first recessed portion (349a) and the second recessed portion (346a).

Meanwhile, the first insulation part (345) and the second insulation part (346) can be connected by the connecting part (347). The connecting part (347) can be fixedly mounted to the middle panel (32) while connecting the first insulation part (345) and the second insulation part (346).

The above connecting portion (347) may be protruded to connect one end of the first insulating portion (345) and one end of the second insulating portion (346), which are spaced apart from each other. In addition, the connecting portion (347) may be formed to pass through the outer end of the intermediate panel (32).

In detail, the connecting portion (347) may extend outward from the ends of the first insulating portion (345) and the second insulating portion (346), and an insertion groove (347a) may be formed inside. The insertion groove (347a) may be formed to a size corresponding to the thickness of the intermediate panel (32). Accordingly, the intermediate panel (32) may be inserted into the inner side of the insertion groove (347a). In addition, the insulating member (34) may be fixedly mounted to the panel assembly (30) by the combination of the intermediate panel (32) and the insertion groove (347a).

In addition, the connecting portion (347) may form a heat transfer path that is bypassed when heat moves from the second insulation portion (346) to the first insulation portion (345) by connecting the first insulation portion (345) and the second insulation portion (346) while bypassing the middle panel (32).

Meanwhile, a first sealing portion (348) and a second sealing portion (349) may be formed at the ends of the first insulation portion (345) and the second insulation portion (346) spaced apart from the connecting portion (347), respectively. The first sealing portion (348) may extend from the first insulation portion (345) and may extend in a state in contact with the rear surface of the front panel (31). Accordingly, the first sealing portion (348) and the first insulation portion (345) may come into surface contact with the rear surface of the front panel (31) and adhere to a wider surface area to ensure a more airtight state.

In addition, the second sealing portion (349) extends from the second insulation portion (346) and can extend in a state of contacting the front surface of the rear panel (33). Accordingly, the second sealing portion (349) and the second insulation portion (346) come into surface contact with the rear surface of the rear panel (33) and can be closely attached over a wider area to ensure a more airtight state.

Meanwhile, the first sealing portion (348), the second sealing portion (349), and the connecting portion (347) can protrude to the same height. Accordingly, by mounting the insulating member (34), the connecting portion (347) can be connected to the middle panel (32), and the first sealing portion (348) and the second sealing portion (349) can be connected in a sealing state with the front panel (31) and the rear panel (33), respectively.

And, the first sealing portion (348) and the second sealing portion (349) can form an additional heat transfer path for heat transfer. And, the first recessed portion (349a) and the second recessed portion (346a) can be formed between the connecting portion (347) and the first sealing portion (348) and the second sealing portion (349).

In addition, the insulating member (34) may be positioned so as to be covered by the opaque part (312) when viewed from the front. That is, the insulating member (34) is positioned further outside than the transparent part (311), and thus may be positioned behind the opaque part (312) so as to be covered so as not to be seen from the outside.

And, a heater (44) may be provided on the rear side of the front panel (31). The heater (44) may be fixed to the rear side of the front panel (31) by the heater bracket (40). The heater bracket (40) may be arranged along the perimeter of the insulating member (34).

As illustrated in Fig. 31, when the door (20) is closed, cold air in the storage space is blocked by the insulating layer (30a, 30b) of the panel assembly (30), so that it is not transmitted to the front of the door (20) via the shortest path. However, heat transfer by conduction may occur in the peripheral portion of the panel assembly (30) where the insulating layer (30a, 30b) is not formed.

That is, the insulating member (34) arranged on the outer end of the insulating layer (30a, 30b) has relatively lower insulating performance than the insulating layer (30a, 30b), so that heat transfer can occur. However, the insulating member (34) is formed of an insulating material, so that not only can heat transfer be minimized, but also the loss of cold air can be minimized by increasing the heat transfer path and increasing the thermal resistance by the sealing portion (348, 349) and the connecting portion (347).

In detail, the cold air of the storage space can come into contact with the rear panel (33) through the liner opening (211). The heat of the rear panel (33) is blocked by the second insulating layer (30b) and cannot be transmitted forward, but can be moved to the side along the rear panel (33). Then, the heat of the rear panel (33) is moved from the end of the rear panel (33) to the second insulating portion (346) through the second sealing portion (349). Then, in the second insulating portion (346), the heat moves to the first insulating portion (345) by bypassing the middle panel (32) without passing through the middle panel (32) while moving along the connecting portion (347).

And, the heat moved to the second insulation part (346) moves along the second insulation part (346) and then moves laterally along the first sealing part (348), and the heat passing through the insulation member (34) can ultimately be transferred to the front panel (31).

At this time, the insulating member (34) may be formed of an insulating material. Accordingly, by providing increased thermal resistance, heat transfer between the rear panel (33) and the front panel (31) can be minimized, thereby preventing cold air in the storage space from being lost through conduction.

In addition, the insulating member (34) can increase the path of heat moving from the end of the rear panel (33) to the front panel (31) by the sealing portion and the connecting portion (347), thereby minimizing the heat transferred to the front panel (31) through the insulating member (34). Accordingly, the loss of cold air inside the cabinet can be reduced by reducing the transfer of cold air inside the cabinet to the front panel (31) through the panel assembly (30).

Fig. 32 is a cross-sectional view showing a heat transfer path according to the 12th embodiment of the present invention.

As illustrated, the door (20) of the refrigerator according to the 12th embodiment of the present invention may include a panel assembly (30) and a door liner (21). The door liner (21) may include a liner opening (211) shielded by the panel assembly (30). The door (20) may include a side frame (24) forming left and right sides of the door (20). In addition, the inside of the door (20) may be filled with an insulating material (26).

The above panel assembly (30) may include the front panel (31), the middle panel (32), and the rear panel (33). In addition, the first spacer (341) may be provided between the front panel (31) and the middle panel (32) to form the first insulating layer (30a). In addition, the second spacer (343) may be provided between the middle panel (32) and the rear panel (33) to form the second insulating layer (30b). In addition, a sealant (342, 344) may be provided on the outer surfaces of the first spacer (341) and the second spacer (343).

Additionally, a heater (44) may be provided on the rear side of the front panel (31).

The front panel (31) may include a transparent portion (311) and an opaque portion (312). The opaque portion (312) may shield the first spacer (341), the second spacer (343), the sealant (342, 344), and the heater (44) from being exposed to the front.

Meanwhile, a contact portion (331) may be formed on the front outer end of the rear panel (33). The contact portion (331) may extend from a position where it comes into contact with the second spacer (343) to an end of the rear panel (33). In addition, the contact portion (331) may be formed to be inclined at a set angle (α) so as to face rearward with respect to the front of the front panel (31) as it extends outward. That is, the contact portion (331) may be formed to be inclined so as to face rearward as it faces the outer side of the rear panel (33). In addition, the width between the front and rear sides of the rear panel (33) becomes narrower as it extends outward by the contact portion (331). Therefore, when heat transferred along the rear panel (33) moves along the contact portion (331), a longer heat transfer path can be provided.

In addition, contact portions (321) may be formed on the outer ends of the front and rear surfaces of the intermediate panel (32). The contact portion (321) on the front surface of the intermediate panel (32) may be in contact with the first spacer (341), and the contact portion (321) on the rear surface of the intermediate panel (32) may be in contact with the second spacer (343). The contact portion (321) may extend from a position in contact with the first spacer (341) and the second spacer (343) to an end of the intermediate panel (32).

The contact portion (321) on the rear surface of the intermediate panel (32) may be formed to be inclined so as to face forward at a set angle (α) based on the front surface of the front panel (31) as it extends outward, and the contact portion (321) on the front surface of the intermediate panel (32) may be formed to be inclined so as to face rearward at a set angle (α) based on the front surface of the front panel (31) as it extends outward. That is, the contact portion (321) may be formed to be inclined so as to face forward and rearward as it faces the outer surface of the rear panel (33). In addition, the width between the front surface and the rear surface of the intermediate panel (32) becomes narrower as it extends outward by the contact portion (321). Therefore, when heat transferred through the first spacer (341) and the second spacer (343) moves along the contact portion (321), a longer heat transfer path can be provided.

When examining the heat transfer state of the panel assembly (30) in the refrigerator (1) having the structure as described above, when the door (20) is closed, the cold air in the storage space is blocked by the insulating layer (30a, 30b) of the panel assembly (30), and heat transfer by conduction can occur in the peripheral area where the insulating layer (30a, 30b) is not formed.

That is, the heat of the rear panel (33) coming into contact with the cold air of the storage space can be transferred to the outer end of the rear panel (33) and transferred to the middle panel (32) through the second spacer (343). At this time, the contact portion (331) can be formed at the outer end of the rear panel (33) coming into contact with the second spacer (343). Accordingly, the heat transferred through the rear panel (33) has a relatively long heat transfer path at the contact portion (331), and heat can be transferred to the second spacer (343) through the contact portion (331).

The heat transferred through the second spacer (343) can be transferred to the first spacer (341) after passing through the contact portion (321) of the middle panel (32). At this time, the heat passing through the contact portions (321) of the front and rear surfaces of the middle panel (32) has a relatively long heat transfer path at the contact portion (321), and heat can be transferred to the first spacer (341) through the contact portion (321). In addition, the heat transferred to the first spacer (341) can be ultimately transferred to the front panel (31).

In this way, in the process of heat being transferred from the rear panel (33) to the second spacer (343), from the second spacer (343) to the middle panel (32) and to the first spacer (341), it passes through the contact portion (331, 321), and the heat transfer amount is reduced by increasing the heat transfer path according to the shape of the contact portion (331, 321), thereby preventing the loss of cold air in the storage space.

Fig. 33 is a cross-sectional view showing a heat transfer path according to the 13th embodiment of the present invention.

As illustrated, the door (20) of the refrigerator according to the 13th embodiment of the present invention may include a panel assembly (30) and a door liner (21). The door liner (21) may include a liner opening (211) shielded by the panel assembly (30). The door (20) may include a side frame (24) forming left and right sides of the door (20). In addition, the inside of the door (20) may be filled with an insulating material (26).

The above panel assembly (30) may include the front panel (31), the middle panel (32), and the rear panel (33). In addition, the first spacer (341) may be provided between the front panel (31) and the middle panel (32) to form the first insulating layer (30a). In addition, the second spacer (343) may be provided between the middle panel (32) and the rear panel (33) to form the second insulating layer (30b). In addition, a sealant (342, 344) may be provided on the outer surfaces of the first spacer (341) and the second spacer (343).

Additionally, a heater (44) may be provided on the rear side of the front panel (31).

The front panel (31) may include a transparent portion (311) and an opaque portion (312). The opaque portion (312) may shield the first spacer (341), the second spacer (343), the sealant (342, 344), and the heater (44) from being exposed to the front.

Meanwhile, a contact portion (332) may be formed on the front outer end of the rear panel (33). The contact portion (332) may extend from a position in contact with the second spacer (343) to an end of the rear panel (33). In addition, the contact portion (332) may be formed in a shape that is stepped backward. The contact portion (332) may be called a stepped portion.

That is, the thickness of the contact portion (332) can be formed thinner than the thickness of the central portion of the rear panel (33). That is, the central portion of the rear panel (33) and the contact portion (332) can have a height difference equal to the set height (H). Accordingly, when the heat transferred through the rear panel (33) moves along the contact portion (332), a longer heat transfer path can be provided.

And, a contact portion (322) may be formed on the outer ends of the front and rear sides of the intermediate panel (32). The contact portion (322) on the front side of the intermediate panel (32) may be in contact with the first spacer (341), and the contact portion (322) on the rear side of the intermediate panel (32) may be in contact with the second spacer (343). The contact portion (322) may extend from a position in contact with the first spacer (341) and the second spacer (343) to an end of the intermediate panel (32). And, the contact portion (332) may be formed in a shape that is stepped toward the rear. The contact portion (332) may be called a stepped portion.

That is, the thickness of the contact portion (332) may be formed thinner than the thickness of the central portion of the intermediate panel (32). That is, the central portion of the intermediate panel (32) and the contact portion (332) may have a height difference equal to the set height (H). At this time, the contact portion (332) may be formed in a stepped shape on both the front and rear surfaces of the intermediate panel (32). Accordingly, when the heat transferred through the second spacer (343) and the first spacer (341) moves along the contact portion (332), a longer heat transfer path may be provided.

When examining the heat transfer state of the panel assembly (30) in the refrigerator (1) having the structure as described above, when the door (20) is closed, the cold air in the storage space is blocked by the insulating layer (30a, 30b) of the panel assembly (30), and heat transfer by conduction can occur in the peripheral area where the insulating layer (30a, 30b) is not formed.

That is, the heat of the rear panel (33) coming into contact with the cold air of the storage space can be transferred to the outer end of the rear panel (33) and transferred to the middle panel (32) through the second spacer (343). At this time, the contact portion (332) can be formed at the outer end of the rear panel (33) coming into contact with the second spacer (343). Accordingly, the heat transferred through the rear panel (33) has a relatively long heat transfer path at the contact portion (332), and heat can be transferred to the second spacer (343) through the contact portion (332).

The heat transferred through the second spacer (343) can be transferred to the first spacer (341) after passing through the contact portion (322) of the middle panel (32). At this time, the heat passing through the contact portions (322) of the front and rear surfaces of the middle panel (32) has a relatively long heat transfer path at the contact portion (322), and heat can be transferred to the first spacer (341) through the contact portion (322). In addition, the heat transferred to the first spacer (341) can be ultimately transferred to the front panel (31).

In this way, in the process of heat being transferred from the rear panel (33) to the second spacer (343), from the second spacer (343) to the middle panel (32) and to the first spacer (341), it passes through the contact portion (332, 322), and the heat transfer amount is reduced by increasing the heat transfer path according to the shape of the contact portion (332, 322), thereby preventing the loss of cold air in the storage space.

Fig. 34 is a cross-sectional view showing a heat transfer path according to the 14th embodiment of the present invention.

As illustrated, the door (20) of the refrigerator according to the 14th embodiment of the present invention may include a panel assembly (30) and a door liner (21). The door liner (21) may include a liner opening (211) shielded by the panel assembly (30). The door (20) may include a side frame (24) forming left and right sides of the door (20). In addition, the inside of the door (20) may be filled with an insulating material (26).

The above panel assembly (30) may include the front panel (31), the middle panel (32), and the rear panel (33). In addition, the first spacer (341) may be provided between the front panel (31) and the middle panel (32) to form the first insulating layer (30a). In addition, the second spacer (343) may be provided between the middle panel (32) and the rear panel (33) to form the second insulating layer (30b). In addition, a sealant (342, 344) may be provided on the outer surfaces of the first spacer (341) and the second spacer (343).

Additionally, a heater (44) may be provided on the rear side of the front panel (31).

The front panel (31) may include a transparent portion (311) and an opaque portion (312). The opaque portion (312) may shield the first spacer (341), the second spacer (343), the sealant (342, 344), and the heater (44) from being exposed to the front.

Meanwhile, a contact portion (333) may be formed on the front outer end of the rear panel (33). The contact portion (333) may extend from a position in contact with the second spacer (343) to an end of the rear panel (33). In addition, the contact portion (333) may be formed in a rough shape formed by fine protrusions on the surface. The contact portion (333) may be referred to as a rough portion.

That is, a rough shape is formed on the outer end of the rear panel (33) where the contact portion (333) is formed, so as to increase the surface area of the contact portion (333). At this time, the contact portion (333) can be formed by surface processing of the rear panel (33). Of course, if necessary, a separate film or sheet can be attached to the rear panel (33) to form the contact portion (333) having a rough shape.

And, a contact portion (323) may be formed on the outer ends of the front and rear sides of the intermediate panel (32). The contact portion (323) on the front side of the intermediate panel (32) may be in contact with the first spacer (341), and the contact portion (323) on the rear side of the intermediate panel (32) may be in contact with the second spacer (343). The contact portion (323) may extend from a position in contact with the first spacer (341) and the second spacer (343) to an end of the intermediate panel (32). And, the contact portion (323) may be formed in a rough shape formed by fine protrusions on the surface. The contact portion (323) may be called an uneven portion.

That is, a rough shape is formed on the outer end of the intermediate panel (32) where the contact portion (323) is formed, so as to increase the surface area of the contact portion (323). At this time, the contact portion (323) can be formed by surface processing of the intermediate panel (33). Of course, if necessary, a separate film or sheet can be attached to the intermediate panel (32) to form the contact portion (323) having a rough shape.

When examining the heat transfer state of the panel assembly (30) in the refrigerator (1) having the structure as described above, when the door (20) is closed, the cold air in the storage space is blocked by the insulating layer (30a, 30b) of the panel assembly (30), and heat transfer by conduction can occur in the peripheral area where the insulating layer (30a, 30b) is not formed.

That is, the heat of the rear panel (33) coming into contact with the cold air of the storage space can be transferred to the outer end of the rear panel (33) and transferred to the middle panel (32) through the second spacer (343). At this time, the contact portion (333) can be formed at the outer end of the rear panel (33) coming into contact with the second spacer (343). Accordingly, the heat transferred through the rear panel (33) has a relatively long heat transfer path at the contact portion (333), and heat can be transferred to the second spacer (343) through the contact portion (3323).

The heat transferred through the second spacer (343) can be transferred to the first spacer (341) after passing through the contact portion (323) of the middle panel (32). At this time, the heat passing through the contact portions (323) of the front and rear surfaces of the middle panel (32) has a relatively long heat transfer path at the contact portion (323), and heat can be transferred to the first spacer (341) through the contact portion (323). In addition, the heat transferred to the first spacer (341) can be ultimately transferred to the front panel (31).

In this way, in the process of heat being transferred from the rear panel (33) to the second spacer (343), from the second spacer (343) to the middle panel (32) and to the first spacer (341), it passes through the contact portion (333, 323), and the heat transfer amount is reduced by increasing the heat transfer path according to the shape of the contact portion (333, 323), thereby preventing the loss of cold air in the storage space.

Fig. 35 is a cross-sectional view of a door according to the 15th embodiment of the present invention.

As illustrated in the drawing, the door (20) of the refrigerator according to the 15th embodiment of the present invention may include a panel assembly (30) and a door liner (21). The door liner (21) may include a liner opening (211) shielded by the panel assembly (30). The door (20) may include a side frame (24) forming left and right sides of the door (20). In addition, the inside of the door (20) may be filled with an insulating material (26).

The above panel assembly (30) may include the front panel (31), the middle panel (32), and the rear panel (33). The first spacer (341) may be provided between the front panel (31) and the middle panel (32) to form the first insulating layer (30a). In addition, the second spacer (343) may be provided between the middle panel (32) and the rear panel (33) to form the second insulating layer (30b).

In addition, the first spacer (341) and the second spacer (343) are provided with insulating materials (381, 382, 383) to block heat transfer through the first spacer (341) and the second spacer (343).

The above-described middle panel (32) and rear panel (33) may be formed to have the same size, and may be formed to have a smaller size than the front panel (31). In addition, the first spacer (341), the second spacer (343), and the insulating member (381, 382, 383) may be shielded by the opaque portion (312) formed on the front panel (31).

The above insulating members (381, 382, 383) may be formed in a plate or sheet shape, and may be provided at the ends of the first spacer (341) and the second spacer (343). The above insulating members (381, 382, 383) may be formed of an insulating material. For example, the above insulating members (381, 382, 383) may be formed of a material having higher insulating performance than at least the panels (31, 32, 33) and the spacers (361, 363). The above insulating members (381, 382, 383) may be composed of a plurality of pieces, and at least one may be arranged on the first spacer (341) and the second spacer (343).

In detail, a first insulating member (381) may be provided on the front surface of the first spacer (341). The first insulating member (381) may be positioned between the front surface of the first spacer (341) and the rear surface of the front panel (31). The first insulating member (381) may be formed of an adhesive material and may seal the space between the first insulating member (381) and the front panel (31).

The first insulating member (381) may protrude so as to pass through the inner and outer sides of the first spacer (341). That is, one end of the first insulating member (381) may protrude toward the inner side of the first spacer (341) and may protrude into the area of the first insulating layer (30a). In addition, the other end of the first insulating member (381) may protrude toward the outer side of the first spacer (341), may pass through the sealant (342), and may be exposed to the peripheral surface of the panel assembly (30).

A second insulating member (382) may be provided on the rear surface of the first spacer (341). The second insulating member (382) may be positioned between the rear surface of the first spacer (341) and the front surface of the intermediate panel (32). The second insulating member (382) may be formed of an adhesive material and may seal the space between the second insulating member (382) and the intermediate panel (32).

The second insulating member (382) may protrude so as to pass through the inner and outer sides of the first spacer (341). That is, one end of the second insulating member (382) may protrude toward the inner side of the first spacer (341) and may protrude into the area of the first insulating layer (30a). In addition, the other end of the second insulating member (382) may protrude toward the outer side of the first spacer (341), may pass through the sealant (62), and may be exposed to the peripheral surface of the panel assembly (30).

Meanwhile, the second insulating member (382) may include a main insulating portion (382a) and an auxiliary insulating portion (382b). The main insulating portion (382a) may be formed in a flat shape and may extend parallel to the middle panel (32). In addition, the auxiliary insulating portion (382b) may be formed by bending at an end of the main insulating portion (382a).

The above main insulation part (382a) can be formed so that both sides are in contact with the first spacer (341) and the middle panel (32). In addition, the above main insulation part (382a) can extend from the inner side of the first insulation layer (30a) to the end of the middle panel (32).

The auxiliary insulation part (382b) may be formed by being vertically folded at an end of the main insulation part (382a). In addition, the auxiliary insulation part (382b) may be extended to shield the side surface of the intermediate panel (32). That is, the intermediate panel (32) may be insulated from the first spacer (341) by the main insulation part (382a) and the auxiliary insulation part (382b).

Meanwhile, the third insulating member (383) can be formed in the same shape as the second insulating member (382), with the only difference being the mounting position. The third insulating member (383) can insulate between the rear panel (33) and the second spacer (343).

In addition, the third insulating member (383) may include a main insulating member (383a) positioned between the front surface of the rear panel (33) and the rear surface of the second spacer (343), and an auxiliary insulating member (383b) bent at an end of the main insulating member (383a) to shield a side surface of the rear panel (33).

Additionally, an insulating member having the same shape as the third insulating member (383) may be further provided between the second spacer (343) and the middle panel (32).

When examining the heat transfer state of the panel assembly (30) in the refrigerator (1) having the structure as described above, when the door (20) is closed, the cold air in the storage space is blocked by the insulating layer (30a, 30b) of the panel assembly (30), and heat transfer by conduction can occur in the peripheral area where the insulating layer (30a, 30b) is not formed.

That is, the heat of the rear panel (33) coming into contact with the cold air of the storage space can be transferred to the outer end of the rear panel (33) and transferred to the second spacer (343). At this time, the heat transferred to the second spacer (343) can be minimized by insulating the space between the rear panel (33) and the second spacer (343) by the third insulating member (383).

And, the heat transferred to the second spacer (343) can be transferred to the middle panel (32) and can be transferred to the first spacer (341) through the middle panel (32). At this time, the heat transferred to the first spacer (341) can be minimized by insulating the middle panel (32) and the first spacer (341) by the second insulating member (382).

And, the heat transferred to the first spacer can be transferred to the front panel (31) through the first spacer. At this time, the heat transferred to the front panel (31) can be minimized by insulating the first spacer (341) and the front panel (31) by the first insulating member (381).

In addition, the second insulating member (382) and the third insulating member (383) can be shielded up to the side of the rear panel (33) and the middle panel (32) by the auxiliary insulating members (382b, 383b), and thus heat transfer through the ends of the rear panel (33) and the middle panel (32) can be blocked.

In this way, in the process of heat moving from the rear panel (33) through the second spacer (343), the middle panel (32), and the first spacer (341) to the front panel (31), it can be insulated by the first insulating member (381), the second insulating member (382), and the third insulating member (383). Therefore, heat transfer from the rear panel (33) to the front panel (31) can be minimized, and cold air in the storage space can be prevented from being lost.

FIG. 36 is a perspective view of a refrigerator with an open sub-door according to the 16th embodiment of the present invention.

As illustrated, at least one of the doors (20a) according to the tenth embodiment of the present invention may be configured with a double door structure consisting of a main door (60) and a sub door (50). For example, both of the pair of refrigerator doors (20a) may be configured with a double door structure.

In detail, the main door (60) is pivotally connected to the cabinet (10) by a hinge device. The main door (60) may be configured to open and close the refrigerator (11) by rotation. In addition, an opening (600) may be formed in the main door (60). The opening (600) may penetrate the main door (60) in the front-back direction and may be connected to the refrigerator (11). Therefore, even when the main door (60) is closed, the refrigerator (11) may be accessed through the opening (600).

Meanwhile, a door storage space (610) having a door storage member (612) may be provided on the inner side of the opening (600). In addition, at least a part of the door storage member (612) may be exposed through the opening (600). Accordingly, the door storage space (610) and the door storage member (612) may be viewed through the panel assembly (30).

The above sub-door (50) can be pivotally connected to the main door (60) by a hinge device. In addition, the sub-door (50) can shield the main door (60) from the front by rotation. The sub-door (50) can open and close the opening (600).

The above sub-door (50) may be configured to view the storage space (610,11) at the rear of the door (20) through the opening (600), including the panel assembly (30). The panel assembly (30) may be configured as any one of the embodiments described above.

In addition, a transparent display may be provided between a plurality of panels constituting the panel assembly (30) to enable screen output. Accordingly, both transparency and screen output of the storage space (610,11) may be possible through the panel assembly (30) of the sub-door (50).

Meanwhile, although not shown, the panel assembly (30) is configured to have a bypass heat transfer path as in the embodiments described above, thereby minimizing cold loss in the storage space.

A double door structure like this can be applied to the refrigerator door (20a) among the refrigerator door (20a) and the freezer door (20b). And, only one refrigerator door (20a) among the pair of refrigerator doors (20a) can be configured with a double door structure. And, only one refrigerator door (20a) among the refrigerator doors (20a) on both sides can have the panel assembly (30) arranged on it. Of course, if necessary, the freezer door can also be configured to have a double door structure.

Meanwhile, the panel assembly and doors including the panel assembly according to the embodiment of the present invention may be applied to refrigerators having various structures.

Figure 37 is a front view of other refrigerators to which an embodiment of the present invention is applied.

As illustrated in (a) of FIG. 37, a refrigerator (2) according to an embodiment of the present invention may include a cabinet (10) forming a storage space and a door (20) for opening and closing the storage space.

The storage space may include a refrigerator (11) and a freezer (12) formed on the left and right sides. In addition, the door (20) may include a refrigerator door (20a) for opening and closing the refrigerator (11) and a freezer door (20b) for opening and closing the freezer (12). In addition, the refrigerator door (20a) and the freezer door (20b) may be arranged side by side on the left and right sides.

And, the panel assembly (30) as in the above-described embodiment may be arranged on the refrigerator door (20a) to be configured to see through the storage space. The refrigerator door (20a) may have a double door structure of a main door and a sub door as in the above-described 10th embodiment.

Additionally, the panel assembly (30) may be provided on the freezer door (20b).

As illustrated in Fig. 37(b), a refrigerator (3) according to an embodiment of the present invention may include a cabinet (10) forming a storage space and a door (20) for opening and closing the storage space.

The above storage space may be partitioned vertically to form an upper storage space (11a) and a lower storage space (12a). For example, the upper storage space (11a) may be a refrigerator, and the lower storage space (12a) may be a freezer.

And, the door (20) may be provided with an upper door (20c) that opens and closes the upper storage space (11a) by rotation, and a lower door (20d, 20e) that opens and closes the lower storage space (12a) by withdrawal.

And, the panel assembly (30) as in the above-described embodiment may be arranged on the upper door (20c) to be configured to view the storage space. The upper door (20c) may have a double door structure of a main door and a sub door as in the above-described 10th embodiment.

As illustrated in Fig. 37(c), a refrigerator (4) according to an embodiment of the present invention may include a cabinet (10) forming a storage space and a door (20) for opening and closing the storage space.

The above storage space can be partitioned vertically to form an upper storage space (11b) and a lower storage space (12b). For example, the upper storage space (11b) can be a freezer, and the lower storage space (12b) can be a refrigerator.

And, the door (20) may be provided with an upper door (20f) that opens and closes the upper storage space (11b) by rotation, and a lower door (20g) that opens and closes the lower storage space (12b) by rotation.

And, the panel assembly (30) as in the above-described embodiment may be arranged on the lower door (20g) to be configured to see through the storage space. The lower door (20g) may have a double door structure of a main door and a sub door as in the above-described 10th embodiment.

As illustrated in Fig. 37(d), a refrigerator (5) according to an embodiment of the present invention may include a cabinet (10) in which a storage space is formed, and a door (20h) for opening and closing the storage space (11c).

The above storage space (11c) can be configured as a single space, and the above storage space (11c) can be opened and closed by a rotating door (20h).

And, the door (20g) may be configured to have the panel assembly (30) as in the above-described embodiment arranged so as to allow the storage space to be viewed. The door (20g) may have a double door structure of a main door and a sub door as in the above-described 10th embodiment.

Meanwhile, the panel assembly and the doors including the panel assembly according to the embodiment of the present invention may be applicable to home appliances having various structures in addition to refrigerators. For example, the panel assembly and the doors including the panel assembly according to the embodiment of the present invention may be applicable to home appliances having a door for opening and closing the space of a cabinet, such as a washing machine, a dryer, a plant cultivation device, an air conditioner, a styler (clothes manager), and a cooking appliance.

The refrigerator according to an embodiment of the present invention has high industrial applicability because it has the advantages of reducing heat loss and improving power consumption.

Claims (15)

a cabinet with storage space formed; and Includes a door for opening and closing the above storage space, The above door, A door liner forming the rear surface of the door and having a liner opening formed therein; A panel assembly forming at least a portion of the front surface of said door and shielding said liner opening to provide a view of the rear space of said door; and Including insulation material filled inside the above door, The above panel assembly comprises a plurality of panels spaced apart in the front-rear direction, A refrigerator in which protrusions and recesses are formed around the perimeter of the above panel assembly. In paragraph 1, The above panel assembly, A front panel forming the front surface of the above panel assembly; A rear panel forming the rear of the above panel assembly; An intermediate panel positioned between the front panel and the rear panel; A first spacer connecting the front panel and the middle panel to form a first airtight insulating layer; and A refrigerator comprising a second spacer connecting the middle panel and the rear panel to connect the second insulating layer. In the second paragraph, The first spacer is positioned closer to the center of the panel assembly than the second spacer, A refrigerator wherein the second insulating layer is formed to protrude further outward than the first insulating layer. In the second paragraph, The above protrusion is formed by the outer surface of the middle panel, the rear panel and the second spacer, A refrigerator wherein the above-mentioned recessed portion is formed by the outer surface of the front panel, the middle panel, and the first spacer. In the second paragraph, A refrigerator wherein the first and second insulating layers are in a vacuum state or filled with insulating gas. In the second paragraph, On the outer end of the above middle panel, a step portion is formed to make the thickness thinner. A refrigerator wherein the step portion is formed between the outer end of the middle panel and the first spacer. In the second paragraph, The above-mentioned recessed portion is positioned further forward than the above-mentioned protrusion, A refrigerator having a heater provided on the inner side of the above-mentioned recessed portion, which comes into contact with the front panel and heats the front panel. In paragraph 1, The above panel assembly, A front panel forming the front surface of the above panel assembly; A vacuum panel positioned at the rear of the front panel and forming a vacuum insulation layer; and A refrigerator comprising a first spacer connecting the front panel and the vacuum panel to form a first airtight insulating layer. In Article 8, The above protrusion is formed by a vacuum panel that protrudes further outward than the first spacer, A refrigerator wherein the above-mentioned recessed portion is formed by the front panel, the front surface of the vacuum panel, and the first spacer. In Article 8, The above vacuum panel, A first panel spaced at the rear of the front panel; A second panel positioned at the rear of the first panel; A third spacer that seals the perimeter between the first panel and the second panel to form the vacuum insulation layer; and A refrigerator comprising a plurality of supporting members provided between the first panel and the second panel and maintaining a gap between the first panel and the second panel. In paragraph 1, The above panel assembly, A front panel forming the front surface of the above panel assembly; A first vacuum panel disposed on the rear side of the front panel and forming a first sealed vacuum insulation layer; and A refrigerator comprising a second vacuum panel disposed at the rear of the first vacuum panel and forming a second vacuum insulation layer that is sealed. In Article 11, The above protrusion is formed by a second vacuum panel that protrudes further outward than the first vacuum panel, A refrigerator wherein the above-mentioned recessed portion is formed by the front panel and the front surfaces of the first vacuum panel and the second vacuum panel. In Article 11, The above first vacuum panel, A first panel adhered to the rear surface of the front panel; A second panel formed to the same size as the first panel and positioned at the rear of the first panel; and Including a third spacer connecting the first panel and the second panel to form the first vacuum insulation layer, The above second vacuum panel, A third panel adhered to the back of the second panel; A fourth panel formed to the same size as the third panel and positioned at the rear of the third panel; and A refrigerator comprising a fourth spacer connecting the third panel and the fourth panel to form the second vacuum insulation layer. In paragraph 1, The above door further includes an outer plate formed of a metal material and forming the front surface of the door, A refrigerator in which a plate opening is formed in the above outer plate, and the front surface of the panel assembly shields the plate opening. In paragraph 1, The above door, A main door that opens and closes the storage space and has an opening formed therein; and It is provided in front of the above main door and includes a sub door that opens and closes the above opening, A refrigerator in which the above panel assembly is provided on the above sub-door.

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