CN103477168A - Refrigerator - Google Patents

Abstract

In a refrigerator comprising a refrigerating chamber and a storage chamber disposed in the refrigerating chamber, the storage chamber having a lower temperature than the refrigerating chamber, a non-uniform temperature distribution in the storage chamber due to the heat of an anti-dew condensation heater provided in a partition member is prevented. The refrigerator is provided with: a refrigerating chamber (22); a first door (31a) and a second door (31b) for opening or closing an opening portion of the refrigerating chamber; a partition member (53) disposed on an open-end side of the first door and configured to close a gap between the first door and the second door when the first door and the second door are closed; an anti-dew condensation heater (55) provided in the partition member; a low-temperature storage chamber (63) disposed in the refrigerating chamber and having a lower temperature than the refrigerating chamber; and a low-temperature air duct (95) disposed on a rear surface of the refrigerating chamber and in which cool air flowing into the storage chamber flows. The anti-dew condensation heater and the low-temperature air duct do not intersect each other in a plane of vertical projection.

Description

Cold storage

technical field

The present invention relates to a double-opening refrigerator with a first door and a second door at the opening of the refrigerator, particularly to a refrigerator with a low-temperature storage room inside the refrigerator, and to a refrigerator with an air path for conveying cold air. pipes for cold storage.

Background technique

Conventionally, there is known a refrigerator having a chilled compartment at the bottom of the refrigerator compartment (for example, refer to Patent Document 1). In such a refrigerator, the duct for the refrigerator compartment is provided on the top surface of the refrigerator compartment, and the duct for the ice-temperature fresh-keeping compartment is provided on the back surface of the refrigerator compartment. In addition, a cooler and a fan are provided on the back of the refrigerator compartment. In addition, the air (cold air) cooled by the cooler is sent to the refrigerator room and the ice temperature preservation room through the duct for the refrigerator room and the duct for the ice temperature preservation room by the fan, thereby cooling the refrigerator room and the ice temperature preservation room respectively. Control to the specified temperature.

Moreover, the opening part of a refrigerator compartment has a 1st door and a 2nd door, and it is a so-called side-by-side type refrigerator which can double-open right and left. A gasket is provided on the inner periphery of the first door and the second door, and a partition plate that abuts on the gasket when the first door and the second door are closed is provided on an open end side of the first door. In addition, the separator is provided with a dew condensation prevention heater for preventing dew condensation from occurring on the surface of the partition plate (for example, refer to Patent Document 2).

The refrigerator includes: a box main body forming a storage room inside; and a cooler generating cool air for cooling the storage room. Furthermore, in the indirect cooling type refrigerator, an air path for conveying cold air is formed by an inner box which is a box inside the box main body and a duct member attached to the inner side of the inner box.

The cold air generated by the cooler is sent to the storage room through the air passage to cool the storage room.

Here, in order to form an air passage for guiding cool air, it is necessary to attach a duct member to the inner box. Therefore, conventionally, a part of the duct member is brought into contact with the inner case, and the duct member is attached to the inner case with screws or the like. Alternatively, the duct member is attached to the inner case by fitting the protrusion of the duct member into a groove portion that is a recess provided in the inner case (for example, refer to Patent Document 3).

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2004-278959

Patent Document 2: Japanese Patent Laid-Open No. 2000-55534

Patent Document 3: Japanese Patent Laid-Open No. 2000-337748

Contents of the invention

The technical problem to be solved by the invention

First, with regard to Patent Document 1 and Patent Document 2 of the background art described above, the following first problem can be cited.

In recent years, it is desired to install a storage room in a lower temperature range than an ice-cooled fresh-keeping room inside a refrigerator in order to maintain the original taste and freshness of seafood and meat for a long period of time. However, when the ice temperature fresh-keeping room of the above-mentioned conventional structure is used as a low-temperature storage room, due to the influence of the heat of the dew condensation prevention heater, the temperature of a part of the storage room rises, and the temperature distribution in the storage room becomes unstable. Even problem. Therefore, there is a possibility that the freshness preservation property of the food stored in the storage room may be deteriorated due to partial melting or the like.

The temperature of the refrigerator is usually 3°C±2°C, and the temperature of the ice-cooled fresh-keeping room is usually 0°C±1°C, whereas the temperature of the low-temperature storage room is, for example, -3°C±1.5°C. In the minus (minus) temperature zone. Therefore, when a low-temperature storage room is installed in the refrigerating room, the temperature difference between the low-temperature storage room and the dew condensation prevention heater becomes larger than when a conventional cold storage room is installed. In addition, if a part of the low-temperature storage room in the subzero temperature zone changes to a plus temperature zone, compared with the case where the temperature of a part of the ice-temperature fresh-keeping room in the conventional plus-zero temperature zone rises, it is more important for food preservation. Sex has a greater impact.

Next, with regard to Patent Document 3 of the above-mentioned background art, the following second problem can be cited.

In the conventional installation structure in which a part of the duct member is in contact with the inner box, the sealing performance for preventing the cold air flowing in the air duct from leaking out of the duct is ensured by using one surface where the inner wall is in contact with a part of the duct member. . Therefore, when a gap or the like occurs on the sealing surface due to the influence of warpage or the like during inner box molding, there is a problem of cold air leakage.

On the other hand, in the attachment structure in which the groove of the inner box is fitted into the protrusion of the duct member, at least two of the side surfaces of the groove and the protrusion ensure sealing performance, thereby reducing leakage of cold air.

However, in this mounting structure, when changing the arrangement of the air passages and forming a plurality of air passages, it is necessary to form a new groove in the inner case, and thus it is necessary to manufacture a new inner case. Furthermore, since the inner box is mainly formed by vacuum forming using a mold, a new expensive mold is required.

Especially in recent years, customer demands have diversified, and for manufacturers who need to manufacture refrigerators with various air passage structures with the same capacity specifications, many molds are required, so the influence on the increase in the manufacturing cost of refrigerators has changed. very big problem.

The present invention solves the first problem in the prior art, and aims to provide a storage room with a first door and a second door at the opening of the refrigerator room, even if a low-temperature storage room is installed inside the refrigerator room. A cold storage with uniform temperature distribution in the room. In addition, the present invention solves the above-mentioned second conventional problem, and aims to provide a duct that can securely ensure the sealing performance of necessary parts to prevent leakage of cool air, and that can easily change the structure of the air passage at low cost. Cold storage.

Technical solutions for solving problems

In order to solve the above-mentioned existing first problem, the refrigerator of the present invention includes: a refrigerator; a first door and a second door for opening and closing the opening of the refrigerator; A partition that closes the gap between the first door and the second door in the state of the first door and the second door; a heater installed in the partition; and a heater installed in the refrigerator compartment, which is lower than the refrigerator compartment and a first air path through which cold air flowing into the low temperature storage room flows, and is arranged on the back of the refrigerator, wherein the heater and the first air path are arranged so that they do not overlap on the vertical projection plane.

Accordingly, the thermal influence of the heater on the cool air flowing through the first air passage can be reduced, and the temperature distribution in the low-temperature chamber will not become uneven.

In order to solve the above-mentioned second conventional problem, the refrigerator of the present invention further includes: an inner box; a piping member mounted on the inner box; a pair of grooves provided in the inner box; a pair of grooves formed between the pair of grooves; The back part of the air passage; the pair of fitting parts provided on the above-mentioned duct member and fitting into the above-mentioned groove part; part to form a third air passage, and the first air passage is formed in the third air passage by abutting the rear surface of the air passage and the duct-side convex part.

Thereby, while the leakage from the 3rd air path connected to a storage room can be reliably prevented, the 1st air path which can change the structure easily in a 3rd air path can be provided.

The effect of the invention

In the refrigerator of the present invention, even if the opening of the refrigerator compartment has the first door and the second door and a low-temperature storage compartment is provided inside the refrigerator compartment, the temperature distribution in the low-temperature storage compartment can be made uniform. In addition, in the refrigerator according to the present invention, in the duct installation structure, the airtightness of necessary parts can be reliably ensured to prevent cold air from leaking, and the air passage structure can be easily changed at low cost.

Description of drawings

Fig. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention.

2 is a horizontal cross-sectional view of main parts of a first door and a second door according to Embodiment 1 of the present invention.

Fig. 3 is a side sectional view of the refrigerator according to Embodiment 1 of the present invention.

Fig. 4 is an exploded perspective view of a rear panel according to Embodiment 1 of the present invention.

Fig. 5 is a rear view of the rear panel according to Embodiment 1 of the present invention.

Fig. 6 is an internal front view of the refrigerator compartment according to Embodiment 1 of the present invention.

Fig. 7 is a horizontal cross-sectional view of the refrigerator according to Embodiment 1 of the present invention.

Fig. 8 is an internal front view of a storage room according to Embodiment 2 of the present invention.

Fig. 9 is a side sectional view of a storage room according to Embodiment 2 of the present invention.

Fig. 10 is a rear view of a rear panel according to Embodiment 3 of the present invention.

Fig. 11 is a front view of an inner box according to Embodiment 3 of the present invention.

Fig. 12 is a cross-sectional view of a conveyance air duct according to Embodiment 3 of the present invention.

Fig. 13 is a cross-sectional view of another conveyance air path according to Embodiment 3 of the present invention.

14 is a cross-sectional view of a conveyance air duct according to Embodiment 4 of the present invention.

Fig. 15 is a cross-sectional view of another conveyance air path according to Embodiment 4 of the present invention.

Fig. 16 is a front view of an inner box according to Embodiment 5 of the present invention.

Fig. 17 is a cross-sectional view of a conveyance air duct according to Embodiment 5 of the present invention.

Fig. 18 is a cross-sectional view of another conveyance air path according to Embodiment 5 of the present invention.

Detailed ways

A refrigerator according to one aspect of the present invention includes: a refrigerator; a first door and a second door for opening and closing the opening of the refrigerator; A partition that closes the gap between the first door and the second door in the state of two doors; a heater installed in the partition; a low-temperature storage room that is lower than the refrigerator in the refrigerator; and A first air passage for flowing cold air flowing into the low-temperature storage room is provided on the rear surface of the refrigerator compartment, wherein the heater and the first air passage are arranged so as not to overlap each other on a vertical projection plane. Therefore, it is possible to reduce the thermal influence of the heater on the cold air flowing through the first air passage, and it is possible to prevent the temperature distribution in the low-temperature storage room from becoming non-uniform.

In addition, the refrigerator according to one aspect of the present invention further includes a second air passage having a plurality of air outlets provided on the top surface of the low-temperature storage room, and the second air passage communicates with the first air passage. . Therefore, the cool air flowing through the first air passage flows into the storage room from the plurality of outlets of the second air passage, so that the temperature distribution in the low-temperature storage room can be prevented from becoming non-uniform.

Moreover, in the refrigerator which concerns on 1 aspect of this invention, the said low-temperature storage room and the said heater are arrange|positioned so that they may not overlap on a vertical projection plane. Therefore, the thermal influence of the heater on the low-temperature storage room can be reduced, and the temperature distribution in the low-temperature storage room can be prevented from becoming non-uniform.

Moreover, in the refrigerator which concerns on 1 aspect of this invention, the said low-temperature store room is provided in the said 2nd door side. Therefore, it is possible to reduce the temperature rise in the vicinity of the heater, and it is possible to prevent the temperature distribution in the low-temperature storage room from becoming non-uniform.

Moreover, in the refrigerator which concerns on 1 aspect of this invention, the said low temperature storage room is a low temperature room of a subzero temperature zone. Therefore, it is possible to reduce a part of the low-temperature room in the sub-zero temperature zone from being in the above-zero temperature zone due to the thermal influence of the heater, and it is possible to reduce deterioration in freshness preservation such as melting of a part of food stored in the low-temperature room.

In addition, in the refrigerator according to one aspect of the present invention, the low-temperature storage room is a switching room capable of switching between a low-temperature room in a sub-zero temperature zone and an ice-temperature fresh room in a sub-zero temperature zone. Therefore, it is possible to select a temperature range suitable for the food to be preserved.

In addition, a refrigerator according to an aspect of the present invention further includes: an inner box; a duct member attached to the inner box; a pair of grooves provided in the inner box; and an air passage back surface formed between the pair of grooves. ; a pair of fitting parts provided on the above-mentioned pipe member to fit into the above-mentioned groove; and a pipe-side convex part formed between the pair of fitting parts, forming a second There are three air passages, and the first air passage is formed in the third air passage by abutting the rear surface of the air passage and the duct-side convex portion. Therefore, the leakage from the third air passage connected to the storage room can be reliably prevented, and the first air passage whose structure can be easily changed can be provided in the third air passage.

Moreover, in the refrigerator which concerns on 1 aspect of this invention, the said air passage back part and the said duct side convex part contact|abut each other via a sealing member. Therefore, the sealing performance of the first air passage can be improved, and the leakage of cold air can be reduced.

In addition, the refrigerator according to an aspect of the present invention further includes an inner box-side convex portion formed at a position facing the duct-side convex portion on the back portion of the air passage, and the height of the inner box-side convex portion is higher than that of the duct side. The height of the part is low. Therefore, it is possible to further improve the sealing performance of the first air passage, and it is also possible to prevent an increase in air passage resistance when changing the air passage structure of the first air passage.

Moreover, in the refrigerator which concerns on 1 aspect of this invention, the said groove part is formed with several convex parts. Therefore, the heat insulation property of a storage room can be improved.

Moreover, in the refrigerator which concerns on 1 aspect of this invention, the said groove part is formed by several convex parts, and the height of the said inner case side convex part is lower than the height of the said several convex parts. Therefore, it is possible to further improve the sealing performance of the first air passage, and it is also possible to prevent an increase in air passage resistance when changing the air passage structure of the first air passage.

Hereinafter, embodiments of the refrigerator according to the present invention will be described with reference to the drawings. In addition, all the embodiments described below represent a preferred specific example of the present invention. Numerical values, shapes, materials, components, arrangement positions and connection modes of the components shown in the following embodiments are examples and do not limit the present invention. The present invention is defined by the scope of the claims. Therefore, among the constituent elements of the following embodiments, the constituent elements not described in the independent claims representing the highest concept of the present invention are not essential to achieve the object of the present invention, but are more preferable configurations. components are described.

(implementation mode 1)

Fig. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention. In FIG. 1 , refrigerator 21 is a refrigerator having a side-by-side door, and has a plurality of compartments in heat insulating box 11 .

Specifically, a plurality of compartments are divided in the heat-insulating box 11. From the top, they are a refrigerator compartment 22, an ice-making compartment 23, a quick-freezing compartment 24 that is arranged side by side with the ice-making compartment 23 and capable of rapid freezing, and a freezer compartment. room 25 and vegetable room 26.

The opening of each chamber is provided with a foam-filled heat insulating door such as rigid urethane foam. Specifically, refrigerating compartment 22 is provided with first door 31 a and second door 31 b that can open and close the opening of heat insulation box 11 . That is, the opening part of the refrigerator compartment 22 is opened and closed by the 1st door 31a and the 2nd door 31b.

In addition, the ice making compartment 23, the quick freezing compartment 24, the freezing compartment 25, and the vegetable compartment 26 are drawer-type compartments, and are provided with drawer-type doors 32, 33, 34, and 35, respectively.

On the outer surface of the second door 31b and on the side opposite to the hinge of the second door 31b, that is, along the edge of the free end side, a strip-shaped door trim panel 36 is provided. An operation display unit 37 is attached to the door trim 36 from the back side, and its height position is about the height of the eyes of ordinary users and workers.

Fig. 2 is a diagram showing the vicinity of first door 31a and second door 31b in II-II sectional view of refrigerator 21 in Fig. 1 . As shown in FIG. 2, the 1st door 31a and the 2nd door 31b are pivotally supported by the heat insulation box 11 by the hinge 51a and the hinge 51b, respectively. A gasket 52a is provided on the outer peripheral edge of the inner surface of the first door 31a, and a gasket 52b is provided on the outer peripheral edge of the inner surface of the second door 31b. However, "the inner surface of the 1st door 31a" or "the inner surface of the 2nd door 31b" mentioned here is the surface which opposes the inner side of the heat insulation box 11. As shown in FIG. Also, on the inner surface of the first door 31a and on the free end side opposite to the hinge of the first door 31a, a columnar partition 53 extending in the vertical direction is rotatably supported via a support arm 54 .

The partition body 53, in the state of opening any one of the first door 31a and the second door 31b, is rotated to a position not protruding from the free end of the first door 31a (shown by a dotted line in FIG. The opening of chamber 22 becomes larger. On the other hand, the partition body 53, in the state of closing the first door 31a and the second door 31b, rotates to the position (shown by the solid line in FIG. Sealing between the first door 31a and the second door 31b. That is, the partition body 53 is provided on the free end side of the first door 31a, and closes the gap between the first door 31a and the second door 31b when the first door 31a and the second door 31b are closed.

In addition, inside the separator 53 , a dew condensation prevention heater 55 for preventing dew condensation on the surface of the separator 53 is provided.

Fig. 3 is a III-III sectional view of refrigerator 21 in Fig. 1 .

As shown in Figure 3, the heat insulation box body 11 comprises: the inner box 11a that resin bodies such as ABS are vacuum-formed; Use the outer box 11b of metal materials such as pre-coated steel plate; The heat insulator 11c of the space formed by the outer case 11b. The heat insulator 11c is, for example, rigid urethane foam, phenolic foam, styrene foam, or the like. It is more preferable from the viewpoint of preventing global warming to use cyclopentane, which is a hydrocarbon, as the foaming material to be foamed and filled in the heat insulator 11c.

Inside the refrigerator compartment 22, a plurality of shelves 61 supported by protrusions (not shown) provided on the side surfaces of the refrigerator compartment 22 are provided. Moreover, the door shelf 60 is provided in the 1st door 31a and the 2nd door 31b as a storage space. Moreover, the low-temperature storage room 63 thermally insulated and partitioned by the heat insulation wall 62 provided under the several shelves 61 is provided in the bottom part of the refrigerating room 22. As shown in FIG. On the front surface of the low-temperature storage room 63, a front surface door 64 dedicated to the low-temperature storage room 63, which is different from the first door 31a and the second door 31b, is provided. Low-temperature storage room 63 is separated from refrigerating room 22 by front door 64 and heat insulating wall 62 , thereby maintaining a state lower than the temperature in refrigerating room 22 more efficiently. The low-temperature storage room 63 is installed inside the refrigerator room 22 and is lower in temperature than the refrigerator room 22 .

The back side of the refrigerator 21 is provided with: a cooling chamber 71 for generating cold air; a conveying air passage 72 as a third air passage for conveying cold air to each chamber; Back panel 73. The transport air path 72 is formed between the inner box 11 a of the heat insulating box 11 and the back panel 73 . Cooling compartment 71 is provided on the back of freezing compartment 25 and vegetable compartment 26, and has cooler 74 inside.

Between the refrigerating chamber 22 and the ice making chamber 23 or the quick freezing chamber 24, a first heat insulating partition wall 44 foamed and filled with heat insulating material is provided. Moreover, between the ice making compartment 23 or the quick freezing compartment 24 and the freezing compartment 25, the 2nd heat insulating partition wall 45 foam-filled with the same heat insulating material as the 1st heat insulating partition wall 44 is provided. Furthermore, between the freezer compartment 25 and the vegetable compartment 26, the 3rd heat insulating partition wall 46 foam-filled with the same heat insulating material as the 1st heat insulating partition wall 44 is provided.

The first heat insulating partition wall 44 and the back surface of the heat insulator 11c are butted in close contact with each other except for the conveyance air path 72 . Moreover, the 3rd heat insulation partition wall 46 and the back surface of the heat insulator 11c are butt-contacted.

The top portion of heat insulating box 11 has a shape in which a stepped recess is provided on the rear side of refrigerator 21 . This stepped recess is the first machine compartment 47 , and a part of components of the refrigeration cycle, such as the compressor 12 and a dryer (not shown) for removing moisture, are accommodated therein.

The left and right side surfaces of the first machine room 47 are partially covered by the side surfaces of the outer case 11b, and the upper side and the rear side are not covered by the heat insulating box 11 . Furthermore, the upper side and the rear side of the first machine chamber 47 are covered with a cover (not shown).

Moreover, the 1st machine room 47 in which the compressor 12 is arrange|positioned is formed so that it may sink in the rear area of the uppermost part in the refrigerator compartment 22. As shown in FIG. That is, by disposing the first machine compartment 47 in the uppermost rear area of the refrigerator compartment 22, which is a dead space that is difficult for the user's hands to reach, the compression compartment arranged in the machine compartment behind the freezer compartment 25 and the vegetable compartment 26 is arranged here. Machine 12, so the capacity of freezer compartment 25 and vegetable compartment 26 can be enlarged, and storage and convenience can be greatly improved.

In the space above the cooler 74, a cooling fan 75 for forced convection of the cold air cooled by the cooler 74 is arranged. The space below the cooler 74 is provided with: a glass tube radiant heater 76 for defrosting the frost and ice attached to the cooler 74 and its periphery during cooling; it is arranged below the radiant heater 76 for Drain pan 77 for receiving defrosting water generated during defrosting; and drain pipe 78 penetrating from the deepest part of drain pan 77 to the outside of the refrigerator. Further, a second machine chamber 48 is formed on the downstream side of the drain pipe, and an evaporation pan 79 for evaporating defrosting water discharged from the drain pipe is provided in the second machine chamber 48 .

The rear panel 73 forming the transport air passage 72 will be described in more detail with reference to FIGS. 4 and 5 . FIG. 4 is an exploded perspective view for explaining the structure of rear panel 73 , and FIG. 5 is a rear view (viewed from the rear side of refrigerator 21 ) of rear panel 73 .

As shown in FIG. 4 , rear panel 73 includes: plate 81 as a resin cover disposed on refrigerator compartment 22 side; A foamed resin such as expanded polystyrene is used for the duct member 82 .

In FIG. 5 , duct member 82 has conveyance air passage right wall 91 and conveyance air passage left wall 92 formed so as to protrude toward the back side of refrigerator 21 on the back surface thereof. And the conveyance air path 72 is formed by the conveyance air path right wall 91, the conveyance air path left wall 92, the main body of the duct member 82, and one surface of the inner case 11a which opposes the main body of the duct member 82. That is, the duct member 82 is attached to the inner case. In addition, duct member 82 has low-temperature air passage wall 93 and low-temperature air passage side wall 94 formed to protrude toward the rear side of refrigerator 21 between conveyance air passage right wall 91 and conveyance air passage left wall 92 . The air passage 95 for low temperature as the first air passage is composed of a part of the right wall 91 of the conveying air passage, the upper wall 93 of the air passage for low temperature, the side wall 94 of the air passage for low temperature, the main body of the duct member 82 and the inner part opposite to the main body of the duct member 82. One surface of the box 11 a is formed inside the transport air path 72 . That is, the low-temperature air passage 95 is an air passage branched from the conveyance air passage 72 in the conveyance air passage 72 , and cool air from the cooling chamber 71 flows through the low-temperature air passage 95 . Air duct 95 for low temperature is provided on the back surface of refrigerator compartment 22, and cool air flowing toward low temperature storage compartment 63 flows therein.

On the front of the duct member 82, a plurality of blowing holes 83 for front refrigeration that communicate with the refrigerating chamber 22 and the conveying air passage 72 are provided, and on the side of the duct member 82, a plurality of blowing holes 83 that communicate the refrigerating chamber 22 and the conveying air passage 72 are provided. Blowout hole 84 for side cooling. In addition, the duct member 82 is provided with a front low-temperature blow-out hole 85 at the front lower portion thereof, which communicates the low-temperature storage room 63 and the low-temperature air passage 95 . In addition, a plurality of attachment holes 89 are provided in the upper portion of the duct member 82 .

And, as shown in FIG. 4 , the plate 81 has a plurality of air outlets for front refrigeration at positions corresponding to each of the plurality of air outlet holes 83 for front refrigeration and the plurality of air outlet holes 84 for side refrigeration of the duct member 82. 86 and a plurality of air outlets 87 for side refrigeration. In addition, the plate 81 has a front low temperature blowout port 88 at a position corresponding to the front low temperature blowout hole 85 of the duct member 82 .

Furthermore, the plate 81 protects the duct member 82 from damage, deformation, moisture penetration, etc., and plays a role of fixing the duct member 82 to the inner case 11a. Therefore, a hook-shaped protrusion (not shown) for attachment is provided on the pipe member 82 side of the plate 81 .

A plurality of air outlets 86 for front refrigeration and a plurality of air outlets 87 for side refrigeration are opened into the refrigerator compartment 22. The outlet 87 is sent into the refrigerator compartment 22 . In addition, the front low-temperature outlet 88 opens into the low-temperature storage chamber 63 , and cold air generated in the cooling chamber 71 is sent to the low-temperature storage chamber 63 through the front low-temperature outlet 88 .

The refrigerator compartment 22 is usually set at 1° C. to 5° C. for refrigerated storage with the temperature not to freeze as the lower limit. Vegetable compartment 26 is set to 2° C. to 7° C., which is the same temperature as refrigerator compartment 22 or a slightly higher temperature. The freezer compartment 25 is set in a sub-zero temperature zone, and is usually set at -22°C to -15°C for cryopreservation, but may be set at a low temperature of, for example, -30°C or -25°C to improve cryopreservation. Low-temperature storage room 63 serves as a so-called partial freezer, and is set at -4.5°C to -1.5°C, which is a lower temperature than refrigerator room 22 . The ice making room 23 cools the water sent from the water storage tank (not shown) in the refrigerating room 22 in the automatic ice maker (not shown) installed in the upper part of the ice making room 23, thereby Ice is made and stored in an ice storage container (not shown) arranged in the lower portion of the ice making chamber 23 .

Below the conveying air passage 72, a damper for refrigeration (not shown) is provided to adjust the flow rate of cold air passing through the conveying air passage 72, and below the low temperature air passage 95, a flow rate of cold air passing through the low temperature air passage 95 is provided. low temperature damper (not shown).

Fig. 6 is an internal front view of refrigerator compartment 22, and Fig. 7 is a VII-VII sectional view of refrigerator 21 in Fig. 6 . As shown in FIG. 6 , among the side walls forming the low-temperature air passage 95 , the low-temperature air passage side wall 94 close to the dew condensation prevention heater 55 is provided so as not to be connected to the junction provided on the partition body 53 on the vertical projection plane. The central line AA of the dew prevention heater 55 overlaps. That is, the heater 55 for dew condensation prevention and the air path 95 for low temperature do not overlap on the vertical projection plane. As shown in FIG. 7 , the low-temperature air passage 95 is provided at a distance L2 between the dew condensation prevention heater 55 and the low-temperature air passage side wall 94 , which is longer than the distance L1 between the dew condensation prevention heater 55 and the back surface of the low-temperature storage room 63. s position. However, the "vertical projection plane" referred to here is a plane for drawing a projection view projected from the front side of refrigerator 21 . That is, the low-temperature air passage 95 is arranged at a position not overlapping the center line AA of the dew condensation preventing heater 55 provided on the separator 53 in the front view of the refrigerator 21 .

At a position overlapping with the dew condensation prevention heater 55 on the vertical projection plane, a transport air duct 72 for transporting cold air to the refrigerator compartment 22 is arranged. Also, as shown in FIG. 7 , the lateral width dimension of the transport air passage 72 is formed larger than the left and right width dimension of the low temperature air passage 95 , and the cross-sectional area of the air passage becomes larger.

The operation and action of the refrigerator configured as above will be described below.

First, the operation of the refrigeration cycle included in refrigerator 21 will be described. When the temperature detected in the refrigerator is higher than the set temperature in the refrigerator, a signal is output from a control board (not shown), and this signal is used as a trigger to operate the refrigeration cycle to perform cooling operation. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 12 is mainly condensed in a condenser (not shown), and passes through the side surface, the back surface of the main body of the refrigerator 21, or the front opening of the main body of the refrigerator 21. Refrigerant piping (not shown) and the like in the refrigerator 21 release heat to the main body of refrigerator 21 to prevent dew condensation and further condense to reach capillary tubes (not shown). Thereafter, the condensed refrigerant exchanges heat with a suction pipe (not shown) connected to the compressor 12 in the capillary tube, depressurizes it, becomes a low-temperature and low-pressure liquid refrigerant, and reaches the cooler 74 . Here, the low-temperature and low-pressure liquid refrigerant exchanges heat with the air due to the operation of the cooling fan 75, thereby depriving the air of heat and evaporating.

Then, in the cooling chamber 71 , the air is cooled by the heat absorbed by the cooler 74 . In this way, the cool air generated in the cooling chamber 71 is sent to each chamber. For example, cold air is sent to the refrigerator compartment 22 through the conveyance air duct 72 via a refrigerator damper (not shown). In addition, cool air is sent to the low-temperature storage room 63 through a damper for low temperature (not shown). In this way, by adjusting the flow rate of the cold air sent to each room through each damper, the cooling control of each room is performed so that the temperature is set in advance.

In refrigerator 21 according to Embodiment 1, air passage 95 for low temperature does not overlap center line AA of heater 55 for dew condensation prevention on the vertical projection plane. That is, the distance L1 between the dew condensation prevention heater 55 and the low temperature air passage side wall 94 is longer than the distance L2 between the dew condensation prevention heater 55 and the back surface of the low temperature storage room 63 . Therefore, in refrigerator 21 according to Embodiment 1, compared with the case where low-temperature air passage 95 is provided at a position coincident with center line AA of dew condensation prevention heater 55 on the vertical projection plane, it is possible to reduce the amount of heating for dew condensation prevention. The thermal influence of the device 55 on the cool air flowing through the low-temperature air passage 95 . As a result, cold air with a uniform temperature distribution flows through the low-temperature air duct 95 , and it is possible to prevent the temperature distribution in the low-temperature storage room 63 from becoming non-uniform.

In particular, when the low-temperature storage room 63 is a low-temperature room in the subzero temperature zone, a part of the low-temperature storage room 63 can be prevented from becoming in the above-zero temperature zone due to the thermal influence from the dew condensation prevention heater 55, so it is possible to reduce storage time. When the freshness preservation property of the low-temperature storage room 63 deteriorates, such as a part of the food in the low-temperature storage room 63 melts. The lower the set temperature in the low-temperature storage room 63 is, the greater the effect of making the temperature distribution in the low-temperature storage room 63 uniform. In addition, the low-temperature storage room 63 may be a switching room capable of switching between a low temperature room in a sub-zero temperature zone and an ice-temperature fresh room in a sub-zero temperature zone. In the refrigerator 21 at this time, when the temperature in the low-temperature storage room 63 is set to a low temperature room, the effect of uniform temperature distribution can be obtained to a large extent, and the user can select a temperature zone suitable for the food to be stored, so it can The usability of refrigerator 21 is improved.

In addition, the distance between the dew condensation prevention heater 55 and the transport air passage 72 is closer than the distance to the low temperature air passage 95 . Therefore, the influence of heat from the dew condensation prevention heater 55 has a greater influence on the conveyance air passage 72 than on the low temperature air passage 95 . However, the air passage cross-sectional area of the conveying air passage 72 is larger than the air passage cross-sectional area of the low-temperature air passage 95, and the cold air conveyed through the conveying air passage 72 flows into the refrigerator compartment 22 which is larger in volume than the low-temperature storage room 63. Therefore, the influence on the temperature distribution in the refrigerator compartment 22 can be reduced.

In addition, in the refrigerator 21 of Embodiment 1, the low-temperature air passage 95 through which the cold air for the low-temperature storage room 63 flows is formed inside the conveyance air passage 72 through which the cold air for the refrigerator compartment 22 flows. Compared with the case where the air passage 72 and the low-temperature air passage 95 are separately formed, even if the thickness of the wall of the air passage is reduced, the temperature distribution of the cold air flowing through the low-temperature air passage 95 can be made uniform, and the temperature in the low-temperature storage room 63 can be reduced. The temperature distribution becomes non-uniform.

(Embodiment 2)

FIG. 8 is an internal front view of refrigerator compartment 122 in refrigerator 121 according to Embodiment 2, and FIG. 9 is a side cross-sectional view of low-temperature storage compartment 163 . In refrigerator 121 of Embodiment 2, only the point which differs from refrigerator 21 of Embodiment 1 is demonstrated, and the description of the structure, operation|movement, and effect similar to 21 of Embodiment 1 is abbreviate|omitted.

As shown in FIG. 8 , the low-temperature storage room 163 is located at the bottom of the refrigerating room 122 and on the right side of the refrigerating room 122 (the second door 31b side), so as not to be in contact with the center line of the dew condensation prevention heater 55 on the vertical projection plane. The way AA overlaps is set. That is, the left heat insulation wall 162a of the low-temperature storage room 63 thermally insulated and partitioned by the heat insulation wall 162 is provided so that it may oppose the center line AA of the heater 55 for dew condensation prevention.

On the lower right side of the space on the left side (first door 31 a side) of low-temperature storage room 163 , there is provided smalls box 127 for storing frequently taken out smalls and the like. Furthermore, an egg storage container 128 for storing eggs is provided above the small item box 127 , and a water storage tank 129 for supplying water to the ice making compartment 23 is provided on the left side of the small item box 127 and the egg storage container 128 .

In addition, as shown in FIG. 9 , a top surface duct unit 96 is provided on the back side of the top surface of the low temperature storage room 163 . The ceiling duct unit 96 has a ceiling air path 97 as a second air path and a plurality of top air outlets 98 inside. The top surface air passage 97 communicates with the low temperature air passage 95 via the front low temperature air outlet 88 and the front low temperature air outlet 85 . The top air outlet 98 opens into the low-temperature storage chamber 163 . That is, top surface air duct 97 has a plurality of top surface air outlets 98 provided on the top surface of low temperature storage room 163 .

On the connection side of the top air passage 97 to the front low-temperature air outlet 88 , a top air passage inclined portion 97 a is provided. Thus, the cold air flowing into the ceiling duct unit 96 from the front low-temperature air outlet 88 flows to the top surface side, and then flows to the front side of the low-temperature storage room 163 in the front-rear direction. 98 flows into the low temperature storage room 163.

The bottom of the low temperature storage room 163 is formed by a storage room lower box 165 . On the back side of the storage compartment lower box 165, a box inclined portion 165a is provided. Therefore, the cold air circulating in low temperature storage room 163 rises from the bottom surface of storage room lower case 165 to the lower portion of front low temperature outlet 88 and then flows downward (see dotted arrow).

In the present embodiment, since the low-temperature storage room 163 is arranged at a position not overlapping the center line AA of the dew condensation prevention heater 55 on the vertical projection plane, the distance between the low-temperature storage room 163 and the dew condensation prevention heater 55 can be adjusted. Since the distance becomes longer, in refrigerator 121 according to Embodiment 2, the thermal influence of dew condensation prevention heater 55 on low-temperature storage room 63 can be reduced, and the temperature distribution in low-temperature storage room 163 can be prevented from becoming uneven. In particular, the left heat insulating wall 162a of the low temperature storage room 163 is provided to face the center line AA of the dew condensation prevention heater 55, so the thermal influence of the dew condensation prevention heater 55 on the low temperature storage room 163 can be greatly reduced.

Furthermore, by disposing the low-temperature storage room 163 on the side of the second door 31b where the partition body 53 is not provided, the low-temperature storage room 163 can be provided farther away from the dew condensation prevention heater 55, and the temperature distribution in the low-temperature storage room 163 can be further prevented. become uneven. Furthermore, since the front door 164 of the low-temperature storage room 163 can be opened and closed by only opening the second door 31b without opening the first door 31a, user's convenience is improved.

In addition, on the side of the first door 31a having a small opening area, a small item box 127, an egg storage container 128, and a water storage tank 129 are provided. Moreover, by opening only the first door 31a without opening the second door 31b, the small parts box 127, the egg storage container 128, and the water storage tank 129, which are highly likely to be taken out frequently, can be taken out. And the temperature distribution in the low-temperature storage room 163 becomes uneven.

In addition, on the top surface of the low-temperature storage room 163, a plurality of top surface air outlets 98 are provided in the depth direction of the low-temperature storage room 163, so that the cold air flowing into the low-temperature air passage 95 from the cooling room 71 can flow from the low-temperature storage room 163 to the low-temperature storage room 163. The front of the top surface and the center of the top surface flow in. Therefore, refrigerator 121 according to Embodiment 2 can prevent the temperature distribution in low-temperature storage room 163 from becoming uneven. Furthermore, the storage room lower box 165 adopts a structure in which the cool air circulating in the low temperature storage room 163 rises from the bottom surface in the storage room lower box 165 to the lower part of the front low temperature outlet 88 and then flows downward. As a result, the cold air circulated in the low-temperature storage room 163 to cool food and the like can be discharged to the outside of the storage room lower box 165, and even when a large amount of food is stored in the low-temperature storage room 163, temperature distribution can be prevented. become uneven. As a result, refrigerator 121 according to Embodiment 2 can achieve both the improvement of storage performance in low-temperature storage room 163 and the uniformization of temperature distribution.

In addition, in Embodiment 1, the structure of the side cross-section of low-temperature storage room 63 of refrigerator 21 is not described, and it is the same as the side cross-section of low-temperature storage room 163 shown in FIG. 9 described in refrigerator 121 of Embodiment 2. The structure is the same.

(Embodiment 3)

Fig. 10 is a rear view of the rear panel of the refrigerator according to Embodiment 3 (a view seen from the rear side of the refrigerator). In Embodiment 3, only the differences from Embodiments 1 and 2 will be described, and the description of the same configuration, operation, and effect will be omitted.

In FIG. 10 , on the back of the main body of duct member 182 , there are right fitting part 191 and left fitting part 192 extending in the vertical direction as a pair of fitting parts protruding toward the back side of refrigerators 21 and 121 . The right fitting part 191 and the left fitting part 192 are cut off in the up-down direction by forming the blow-out hole 184 for side cooling, respectively. That is, the blowing hole 184 for side cooling is formed by forming the right fitting part 191 and the left fitting part 192 that are convexly formed toward the rear side of the refrigerators 21 and 121 so that they are not convex but formed flat, or that they are convexly formed. It is formed but the height of the protrusion (ie, the distance from the duct member 182 in the back direction) is lower (shorter) than the right fitting part 191 and the left fitting part 192 .

In addition, in the lower part of the duct member 182, between the pair of fitting parts, that is, the right fitting part 191 and the left fitting part 192, as a duct-side protrusion formed to protrude toward the back side of the refrigerators 21 and 121, there is formed a The upper duct side protrusion 193 and the side duct side protrusion 194 . Both the upper duct side protrusion 193 and the side duct side protrusion 194 are formed to be lower in height from the plane portion of the main body of the duct member 182 than the right fitting part 191 and the left fitting part 192 .

Next, together with the back panel 73, the structure of the inner side of the back surface of the inner case 11a which forms the conveyance air path 172 is demonstrated using FIG. Fig. 11 is a front view (view seen from the front side of refrigerator 21) for explaining the structure of the back surface of inner box 11a. Inside the back surface of inner box 11a, right groove portion 101 and left groove portion 102 are formed as a pair of groove portions recessed toward the rear surface side of refrigerators 21 and 121 .

An air passage back surface portion 103 is formed between the right groove portion 101 and the left groove portion 102 inside the rear surface of the inner case 11 a. The air passage back surface part 103 forms substantially the same plane as the inner surface of the back surface of the inner case 11a. An attachment hole 104 is provided at a position corresponding to the attachment hole 189 of the duct member 182 on the upper portion of the back surface of the inner case 11 a. Moreover, the upper protrusion part 105 and the lower protrusion part 106 for fixing the heat insulation wall 62 are provided in the position corresponding to the heat insulation wall 62 on the back surface of the inner box 11a as a pair.

Next, the conveyance air path 172 formed by attaching the duct member 182 to the inner case 11a will be described. Fig. 12 is an XII-XII sectional view of the conveying air duct in Figs. 10 and 11 . Fig. 12 shows a state in which the duct member 182 is attached to the inner case 11a.

The duct member 182 is attached to the inner case 11a by inserting the hook-shaped protrusion (not shown) of the plate 81 through the attachment hole 189 and then inserting it into the attachment hole 104 of the inner case 11a. And the right fitting part 191 is fitted into the right groove part 101 , and the left fitting part 192 is fitted into the left groove part 102 . That is, in a state where duct member 182 is attached to plate 81 , air passage front portion 196 faces air passage rear portion 103 . In addition, the right fitting part 191 and the left fitting part 192 which are a pair of fitting parts are fitted into the right groove part 101 and the left groove part 102 which are a pair of groove parts provided in the duct member 182 .

Then, the front ends of the upper duct-side convex portion 193 and the side duct-side convex portion 194 are brought into contact with the air passage back surface portion 103 , respectively. Between the upper duct side convex part 193 and the side duct side convex part 194, and the air passage back part 103, sealing members for reducing the leakage of cold air are respectively provided. As the sealing member, resin sheets such as polyurethane sheets and polyethylene sheets can be used. That is, the air passage back surface portion 103 , the upper duct-side convex portion 193 and the side duct-side convex portion 194 as the duct-side convex portions are in contact with each other through the sealing member.

As shown in FIGS. 11 and 12 , the conveying air passage 172 (area surrounded by dotted lines in FIG. 5 ) is formed by a right embedded part 191 , a left embedded part 192 , an air passage front part 196 and an air passage back part 103 . In addition, the air duct 195 for low temperature (the area enclosed by the dotted line in FIG. 5 ) is composed of a part of the right embedded part 191, the side duct side convex part 194, a part of the air duct front part 196, and the air duct back part 103. A part and the upper duct-side convex portion 193 form a low-temperature air path 195 . That is, the inner box 11a and the duct member 182 are formed as a third air path by fitting a pair of fitting parts, namely, a right fitting part 191 and a left fitting part 192, into a pair of groove parts, namely, a right groove part 101 and a left groove part 102. Conveying the air passage 172, and by making the air passage back part 103 abut against the upper duct side convex part 193 and the side duct side convex part 194 as the duct side convex part, a first air passage is formed in the conveying air passage 172. Air duct 195 for low temperature.

In the refrigerators 21 and 121 according to Embodiment 3, by fitting the right fitting part 191 and the left fitting part 192 formed in the duct member 182 into the right groove part 101 and the left groove part 102 formed in the inner box 11a, the conveying wind is formed. Therefore, the sides of the grooves 101, 102 and at least two sides of the sides of the embedded parts 191, 192 (that is, the two sides of the grooves and the embedded parts along the direction of insertion) are in close contact, thereby ensuring that the pipe member 182 Sealability with the back of the inner box 11a. Therefore, the leakage of cold air from conveyance air passage 172 into refrigerator compartment 22 can be reduced, and cold air can be reliably blown out from front cooling air outlet 186 and side cooling air outlet 187 provided at appropriate positions.

The low-temperature air passage 195 is formed by abutting the upper duct-side protrusion 193 and the side duct-side protrusion 194 on the air passage back surface 103 between the right groove 101 and the left groove 102 of the inner case 11a. Therefore, one surface of the low-temperature air passage 195 ensures airtightness, and cold air leakage may occur due to the structure in which the fitting portion is fitted into the groove portion. However, since the air passage 195 for low temperature is provided inside the air passage 172 for low temperature, even if cold air leaks from the air passage 195 for low temperature, the cold air leaks into the air passage 172 for conveyance, and it is possible to prevent the direct leakage of cold air from the air passage 195 for low temperature. to the refrigerator 22.

The cool air flowing through the transport air duct 172 is 1° C. to 5° C. lower than the temperature for cooling the refrigerator compartment 22 . That is, the temperature difference between the cool air in the low temperature air passage 195 and the cool air in the transport air passage 172 is smaller than the temperature difference between the cool air in the low temperature air passage 195 and the cool air in the refrigerator compartment 22 .

Therefore, in the refrigerator according to Embodiment 3, by providing air passage 195 for low temperature in conveyance air passage 172 , it is possible to prevent a decrease in cooling efficiency compared with refrigerators 21 and 121 according to Embodiment 1 and Embodiment 2.

In addition, in the refrigerator according to Embodiment 3, the structure of air duct 195 for low temperature can be easily changed. For example, as shown in FIG. 13 , if the structure in which the upper duct-side convex portion 193 and the side duct-side convex portion 194 are not formed from the duct member 182 can be achieved without changing the structure of the inner box 11a without forming a low-temperature air passage. 195 structures. Thereby, the inner box 11a of the refrigerator which has the low-temperature storage room 63 in the refrigerator room 22, and the inner box 11a of the refrigerator which does not have the low-temperature storage room 63 in the refrigerator room 22 can be manufactured with a common structure. Thereby, it is not necessary to prepare a plurality of molds for molding the inner box 11a for refrigerators of different specifications, and the manufacturing cost of the refrigerator can be reduced.

In addition, in order to eliminate the duct side protrusions such as the upper duct side protrusions 193 and the side duct side protrusions 194, the duct side protrusions may be cut off from the duct member 182 provided with the duct side protrusions. In addition, it is also possible to newly manufacture a pipe member without the pipe side protrusion. In the latter case, the pipe member 182 is smaller than the inner case 11a, and the mold for forming the pipe member 182 is also smaller than the mold for forming the inner case 11a. 11a The mold for molding can reduce the mold cost. Therefore, the manufacturing cost of the refrigerator at the time of manufacturing several types of piping members can be reduced.

Moreover, the side duct side convex part 194 is provided at a position closer to the right fitting part 191 side than the left fitting part 192 side, and one side wall of the low temperature air passage 195 is constituted by the side duct side convex part 194, and the other The side wall is not provided with a separate side duct protrusion dedicated to the low-temperature air passage 195 , but the right embedded portion 191 serving as the side wall of the conveying air passage 172 is shared.

In this way, only one side duct side convex portion 194 is provided as a side wall portion dedicated to the low-temperature air passage 195, thereby constituting the low-temperature air passage 195, so that the number of delivery air passages 172 and low-temperature use is hardly reduced. The cross-sectional area of the wind path 195. Thereby, the air path resistance of the conveyance air path 172 and the low temperature air path 195 is not increased, and it can prevent that cooling efficiency falls.

In addition, since the air passage 195 for low temperature is provided in the conveying air passage 172, compared with the case where the conveying air passage 172 and the air passage 195 for low temperature are separately provided, even if the thickness of the wall of the air passage is reduced, it is possible to flow low temperature air. The temperature distribution of the cold air in the air passage 195 is uniform, and it is possible to prevent the temperature distribution in the low-temperature storage room 63 from becoming uneven.

Furthermore, an upper protrusion for fixing the heat insulating wall 62 is formed at substantially the same height as the upper duct-side protrusion 193 provided along a direction substantially perpendicular to the grooves 101 , 102 and the fittings 191 , 192 . 105 and the lower protrusion 106. Furthermore, a heat insulating wall 62 is provided between the upper protrusion 105 and the lower protrusion 106 . Accordingly, the forward movement of the upper duct-side protrusion 193 can be restricted by the heat insulating wall 62 (for example, the duct member 82 forming the upper duct-side protrusion 193 bends forward). Therefore, it is possible to prevent a gap from being generated between the upper duct-side convex portion 193 and the inner case 11a, and to further reduce cold air leakage.

(Embodiment 4)

Fig. 14 is a cross-sectional view of a conveyance air path of the refrigerator according to Embodiment 4. In Embodiment 4, only the differences from Embodiments 1 to 3 will be described, and the description of the same configuration, operation, and effect will be omitted.

In Embodiment 4, on the back surface of the inner box 11a, at the positions facing the upper duct-side convex portion 193 and the side duct-side convex portion 194, respectively, there is an inner box formed to protrude inwardly from the back surface of the inner box 11a. The case-side protrusions are respectively provided with an upper inner case-side protrusion (not shown) and a side inner case-side protrusion 107 . That is, the upper inner case side protrusions and the side inner case side protrusions 107 which are the inner case side protrusions on the rear surface of the air passage are formed in conjunction with the upper duct side protrusions 193 which are duct side protrusions and the side ducts. The relative positions of the side protrusions 194 .

By providing the inner case 11a with the upper inner case-side protrusions and the side inner case-side protrusions 107, the influence of warpage during molding of the back surface of the inner case 11a can be reduced, so the gap between the inner case 11a and the duct member 182 can be improved. The tightness can further reduce the leakage of cool air from the low-temperature air passage 195 .

In addition, the upper inner case side protrusions and the side inner case side protrusions 107 are provided to be lower in height (length in the front-rear direction) than the upper duct side protrusions 193 and the side duct side protrusions 194 . Thus, as shown in FIG. 15 , when the upper duct side convex portion 193 and the side duct side convex portion 194 are discarded from the duct member 182, and the low-temperature air passage 195 is discarded, the upper inner case side convex portion, the side The inner case side convex portion 107 hardly reduces the cross-sectional area of the conveying air passage 172 , so the air passage resistance of the conveying air passage 172 is hardly increased, and the cooling efficiency can be prevented as much as possible.

(implementation mode 5)

16 is a front view (view viewed from the front side of refrigerator 21 ) for explaining the structure of the rear side of inner box 11 a of the refrigerator according to Embodiment 5 of the present invention, and FIG. 17 is a cross-sectional view of the conveyance air duct. In this embodiment, only the differences from Embodiments 1 to 4 will be described, and the description of the same configuration, operation, and effect will be omitted.

In Embodiment 5, the constituent elements that perform the same functions as the pair of groove portions 101 and 102 in Embodiments 3 and 4 are composed of a plurality of convex portions, that is, a right outer convex portion 201, a right inner convex portion 202, and a left outer convex portion 203. and the left inner convex portion 204 are formed.

Thereby, compared with the case where the inner case 11a provided the concave groove part, since the sealing length of the cross-section of the sealed part becomes long, it can reduce cold air leakage. Moreover, since there is no part which reduces the thickness of the heat insulator 11c, the heat insulation property of the refrigerator compartment 22 can be improved, and cooling efficiency can be prevented from falling.

In addition, the heights of the right outer convex portion 201, the right inner convex portion 202, the left outer convex portion 203, and the left inner convex portion 204 are higher than the upper inner case side convex portion and the side inner case side convex portions which are the inner case side convex portions. The height of 107 is low.

In this way, the influence of warpage during back molding of the inner case 11a can be reduced, so the sealing performance between the inner case 11a and the duct member 182 can be improved, and the leakage of cool air from the low temperature air passage 195 can be further reduced. In addition, at the same time, as shown in FIG. 18 , when the upper duct side convex portion 193 and the side duct side convex portion 194 are discarded from the duct member 182 and the low temperature air passage 195 is discarded, the upper inner case side convex portion and the side The side convex portion 107 of the square inner box will hardly reduce the cross-sectional area of the conveying air passage 172 , so the air passage resistance of the conveying air passage 172 will hardly be increased. Therefore, it is possible to prevent cooling efficiency from decreasing as much as possible.

Also, as shown in FIG. 16 , the length in the height direction of refrigerator 21 of right inner convex portion 202 on the side where low temperature air passage 195 is provided is set shorter than the length of right outer convex portion 201 . In addition, the lower end of the right inner convex portion 202 is provided so as to be in contact with the upper duct-side convex portion 193 (area B surrounded by a short dashed line in FIG. 10 ).

Thus, one side wall of the low-temperature air duct 195 is formed by the side duct side convex portion 194, and the other side wall can be formed by the right outer side wall of the side wall of the conveying air duct 172 without providing another side duct protrusion portion. Convex portion 201 is formed.

In this way, by providing only one side duct-side convex portion 194 as a side wall portion dedicated to the low-temperature air passage 195, the low-temperature air passage is formed not by the right inner convex portion 202 but by the right outer convex portion 201. 195 , the cross-sectional area of the air passage 195 for low temperature is hardly reduced, so the air passage resistance of the air passage 195 for low temperature can be substantially not increased. Therefore, it is possible to prevent cooling efficiency from decreasing as much as possible.

In addition, the heights in the depth direction of the refrigerators 21 and 121 of the right inner convex portion 202 and the left inner convex portion 204 (the height of the duct member 182 from the air passage front portion 196 ) are set to be higher than those of the right outer convex portion 201 and the left outer convex portion. The height of the convex portion 203 is higher.

In this way, by increasing the height of the convex portion closer to the conveying air passage 172 and the low-temperature air passage 195 , it is possible to further reduce cold air leakage from the conveying air passage 172 and the low-temperature air passage 195 . In addition, the sealing length in the depth direction of the refrigerators 21 and 121 can be increased at the contact portion between the lower end of the right inner convex portion 202 and the upper duct side convex portion 193 (in FIG. 10 , the area B surrounded by a short dashed line). Therefore, it is possible to further reduce the leakage of cold air between the transport air passage 172 and the low temperature air passage 195 at this location.

In addition, in the above embodiments, as an example of changing the structure of the low-temperature air passage 195, the case where the duct-side convex portion is removed has been described, but the position and size of the duct-side convex portion can also be changed. The position and size of the air passage 195 for low temperature provided in the conveyance air passage 172 . At this time, the positions, sizes, etc. of the front low-temperature blowout hole 185 and the front low-temperature blowout port 88 may be changed accordingly.

As mentioned above, although the refrigerator which concerns on Embodiment 1-5 of this invention was demonstrated, this invention is not limited to this Embodiment 1-5.

That is, all aspects of Embodiments 1 to 5 disclosed this time should be considered as examples and not intended to limit the present invention. The scope of the present invention is shown not by the above description but by the claims, and it is intended that all changes within the meaning and range equivalent to the claims are included. In addition, forms obtained by arbitrarily combining the above-mentioned embodiments are also included in the scope of the present invention.

Industrial availability

As described above, even if the refrigerator of the present invention has the first and second doors at the opening of the refrigerator and a low-temperature storage room is installed inside the refrigerator, the temperature distribution in the storage room can be made uniform, and it can be applied to households. Refrigerators of various types and sizes for commercial and business use. In addition, in the refrigerator of the present invention, in the duct installation structure of the indirect cooling refrigerator, the airtightness of the necessary parts can be reliably ensured, the cold air can be prevented from leaking, and the air passage structure can be easily changed at low cost. It is suitable for all types and sizes of refrigerators for household and business use.

Explanation of reference signs

11 Insulation box

11a inner box

11b Outer box

11c Insulator

12 compressors

21, 121 Refrigerator

22, 122 Refrigerator

23 ice room

24 Blast freezer

25 Freezer

26 vegetable room

31a First Gate

31b second door

32, 33, 34, 35 doors

36 door trim panels

37 Operating display unit

44 The first insulation partition wall

45 Second insulation partition wall

46 third insulation partition wall

47 The first mechanical room

48 Second mechanical room

51a, 51b hinge

52a, 52b Liners

53 separators

54 Support arm

55 Heater for preventing condensation

60 door shelves

61 shelves

62, 162 insulation wall

63, 163 Low temperature storage room

64, 164 front surface door

71 cooling room

72, 172 conveying air path

73 Back panel

74 cooler

75 cooling fan

76 Radiant Heaters

77 drain pan

78 drain pipe

79 evaporator

81 plates

82, 182 Pipe components

83 Blow-out hole for front refrigeration

84, 184 Blow-out holes for side refrigeration

85, 185 Blowing holes for low temperature on the front

86, 186 Air outlet for front refrigeration

87, 187 Air outlet for side refrigeration

88 Air outlet for front low temperature

89, 189 Mounting holes

91 Right wall of conveying air duct

92 Left wall of conveying air path

93 Air duct wall for low temperature

94 Side wall of air passage for low temperature

95, 195 Low temperature air duct

96 top pipe unit

97 Top Airway

97a Inclined portion of top air duct

98 Top outlet

101 right groove

102 left slot

103 The back of the wind road

104 Mounting hole

105 Upper protrusion

106 Bottom protrusion

107 Side convex part of side inner box

127 small box

128 egg storage container

129 water storage tank

162a Insulation wall, left

165 lower storage box

165a box slope

191 right insert part

192 left insert

193 Upper pipe side protrusion

194 side pipe side convex part

196 front of air duct

201 Right lateral convex part

202 Right medial convex part

203 Left lateral convex part

204 Left medial convex part

Claims (11)

1. a freezer, is characterized in that, comprising:

Refrigerating chamber;

Open and close first and second of peristome of described refrigerating chamber;

Be arranged at the free end side of described first, described first spacer body with the gap of described second of sealing under the state of closing described first and described second;

Be arranged at the heater of described spacer body;

Be arranged at the inside of described refrigerating chamber, than the freezer room of described refrigerating chamber low temperature; With

The first wind path, the back side that it is arranged at described refrigerating chamber, the cold air that flows into described freezer room flows in this first wind path, wherein,

Described heater and described the first wind path are configured to not overlap on vertical plane.

2. freezer as claimed in claim 1 is characterized in that:

Also have the second wind path, this second wind path has a plurality of blow-off outlets of the end face that is arranged at described freezer room,

Described the second wind path and described the first wind path are communicated with.

3. freezer as claimed in claim 1 is characterized in that:

Described freezer room becomes on vertical plane and does not overlap with described heater configuration.

4. freezer as claimed in claim 1 is characterized in that:

Described freezer room is arranged at described the second reveal.

5. freezer as claimed in claim 1 is characterized in that:

The low temperature chamber that described freezer room is the zubzero temperature band.

6. freezer as claimed in claim 1 is characterized in that:

The switching chamber that described freezer room is the ice temperature fresh-keeping chamber that can switch the low temperature chamber of zubzero temperature band and temperature band above freezing.

7. freezer as claimed in claim 1, is characterized in that, also comprises:

Interior case;

Be installed on the conduit component of described interior case;

Be arranged at a pair of slot part of described interior case;

Be formed on the wind path back part between described a pair of slot part;

Be arranged at described conduit component, embed a pair of Embedded Division of described slot part; With

Be formed on the pipe side protuberance between described a pair of Embedded Division,

Form the 3rd wind path by described a pair of Embedded Division is embedded to described a pair of slot part, and form described the first wind path by making described wind path back part and described pipe side protuberance butt in described the 3rd wind path.

8. freezer as claimed in claim 7 is characterized in that:

Described wind path back part and described pipe side protuberance are across the mutual butt of seal member.

9. freezer as claimed in claim 7 is characterized in that:

Also there is the inner box side protuberance formed in the position relative with described pipe side protuberance of described wind path back part,

The height of the described pipe side protuberance of the aspect ratio of described inner box side protuberance is low.

10. freezer as claimed in claim 7 is characterized in that:

Described slot part is formed by a plurality of protuberances.

11. freezer as claimed in claim 9 is characterized in that:

Described slot part is formed by a plurality of protuberances,

The height of the described a plurality of protuberances of aspect ratio of described inner box side protuberance is low.

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