WO2015025477A1 - Refrigerator - Google Patents

Abstract

　This refrigerator is provided with a heat-insulated box unit in which a foam insulation material is packed between an outer box and an inner box, a heat-radiating pipe (18) disposed inside the outer box, and a vacuum heat-insulating material (21) provided on the side towards the inside of the refrigerator with respect to the heat-radiating pipe (18). The vacuum heat-insulating material (21) has concave grooves (22a, 22b). The heat-radiating pipe (18) is disposed in the grooves (22a, 22b), and a chamfered part (25) is formed on the lower parts at the front and rear of the vacuum heat-insulating material (21) provided on the side surface of the heat-insulated box unit. This configuration maximizes the downward dimensions while extending the lateral width of the vacuum heat-insulating material (21) to the full lateral width of the side surface of the heat-insulated box unit irrespective of the presence of a reinforcing member at the lower part of the side surface of the outer box.

Description

refrigerator

The present invention relates to a refrigerator using a vacuum heat insulating material.

In recent years, there has been an active movement to promote energy conservation as a countermeasure against global warming, which is a global environmental problem. With regard to equipment that uses heat and cold energy, a vacuum insulation material with excellent heat insulation performance from the viewpoint of effective use of heat. Is spreading.

Vacuum insulation is a bag-like gas barrier film that contains a core material with a high gas phase volume ratio and a fine gap, such as glass wool, and the core material storage space is decompressed and sealed. It is a thing.

Vacuum heat insulating material has a low thermal conductivity and is applied to the wall surface of a refrigerator. In recent years, there is a tendency to increase the thickness of the vacuum heat insulating material to increase its heat insulating effect. In addition, in order to efficiently dissipate the heat generated in the refrigerator's refrigeration cycle, a heat-dissipating pipe is attached to the inside of the outer box that forms the outer surface of the refrigerator, and this heat-dissipating pipe is covered with a vacuum heat insulating material. A heat insulating material is filled between the inner box forming the interior space of the refrigerator and the outer box so that the heat outside the refrigerator is hardly transmitted to the inside of the refrigerator.

However, simply placing a flat vacuum heat insulating material on the heat radiating pipe creates a space surrounded by the outer box of the refrigerator, the heat radiating pipe, and the vacuum heat insulating material, and foam urethane cannot be filled. In addition, by overlapping the heat radiating pipe and the vacuum heat insulating material, the thickness of the space between the inner box and the outer box of the refrigerator, that is, the thickness of the wall for the refrigerator must be increased, and the internal volume must be reduced.

Therefore, in order to solve the above-mentioned problem, it has been proposed to provide a groove for fitting the heat radiating pipe in the vacuum heat insulating material (for example, see Patent Document 1).

FIG. 12 is a horizontal cross-sectional view of a side wall of a conventional refrigerator heat insulation box disclosed in Patent Document 1, and FIG. 13 is an exploded perspective view of the side wall portion. As shown in FIGS. 12 and 13, the heat insulating box body 102 includes an outer box 101, an inner box 103, and a foam heat insulating material 104 that is filled and foamed between the outer box 101 and the inner box 103. A heat radiating pipe 105 is disposed inside the outer box 101, and the heat radiating pipe 105 is covered with a vacuum heat insulating material 106. A concave groove 107 into which the heat radiating pipe 105 is fitted is formed on the heat radiating pipe 105 side of the vacuum heat insulating material 106.

According to the conventional configuration, since the heat radiating pipe 105 is positioned in the groove 107 of the vacuum heat insulating material 106, the increase in wall thickness due to the overlapping of the heat radiating pipe 105 and the vacuum heat insulating material 106 is eliminated, and There is an advantage that the heat insulating property of the heat insulating box 102 is improved at the same time as securing is possible.

However, in the refrigerator using the conventional vacuum heat insulating material 106, there is still room for improvement in how to use the vacuum heat insulating material 106, particularly in improving the coverage of the vacuum heat insulating material.

Further, in the refrigerator using the conventional vacuum heat insulating material 106, when the pipe end portion of the heat radiating pipe 105 covered with the vacuum heat insulating material 106 is pulled out and connected, a peeling force acts on the vacuum heat insulating material 106, thereby vacuum insulating the heat. There was a problem that the material 106 peeled off.

Further, in the refrigerator using the conventional vacuum heat insulating material 106, how is the covering of the bent portion when the heat radiating pipe 105 covered with the vacuum heat insulating material 106 is bridged to another surface, for example, the ceiling surface? There was no disclosure.

In addition, in the refrigerator using the conventional vacuum heat insulating material 106, there is still room for improvement in how to use the vacuum heat insulating material 106, particularly in improving the coverage of the vacuum heat insulating material.

JP 2005-90810 A

The refrigerator of the present invention includes a heat insulating box body filled with a foam heat insulating material between the outer box and the inner box, a heat radiation pipe disposed inside the outer box, and a vacuum heat insulation provided inside the heat sink pipe. Material. The vacuum heat insulating material has a concave groove, and a heat radiating pipe is disposed in the groove, and the vacuum heat insulating material provided on the side surface of the heat insulating box forms a chamfered portion at the front and rear.

As a result, even if there is a reinforcing member or the like in the lower part of the side of the outer box of the heat insulating box, the vacuum heat insulating material maximizes the downward dimension while ensuring a wide lateral width, greatly increasing the side coverage. Can be increased.

Thus, according to the present invention, the coverage of the vacuum heat insulating material can be increased to further increase the heat insulating property, and a refrigerator having high heat insulating properties can be provided.

FIG. 1 is a front view of the refrigerator in the first embodiment of the present invention. FIG. 2 is a side cross-sectional configuration diagram of the refrigerator in the first embodiment of the present invention. FIG. 3 is a perspective configuration diagram illustrating the position of the heat radiating pipe of the refrigerator in the first embodiment of the present invention. FIG. 4 is a front view showing the side surface of the outer box and the heat radiating pipe of the refrigerator according to the first embodiment of the present invention. FIG. 5 is an enlarged cross-sectional view of a portion D in FIG. FIG. 6 is a front view of the vacuum heat insulating material used for the refrigerator in the first embodiment of the present invention. FIG. 7 is a schematic cross-sectional side view of the refrigerator in the first embodiment of the present invention. 8 is a cross-sectional view taken along the line 8-8 in FIG. 9 is a cross-sectional view taken along line 9-9 of FIG. FIG. 10 is a front view of the vacuum heat insulating material of the refrigerator in the second embodiment of the present invention. FIG. 11: is a front view of the vacuum heat insulating material of the refrigerator in the 3rd Embodiment of this invention. FIG. 12 is a horizontal sectional view of a side wall of a heat-insulating box of a conventional refrigerator. FIG. 13 is an exploded perspective view of a conventional heat insulation box of a refrigerator.

Hereinafter, the refrigerator using the vacuum heat insulating material in the embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(First embodiment)
FIG. 1 is a front view of the refrigerator according to the first embodiment of the present invention. FIG. 2 is a sectional side view of the refrigerator in the first embodiment of the present invention. FIG. 3 is a perspective configuration diagram illustrating the position of the heat radiating pipe of the refrigerator in the first embodiment of the present invention. FIG. 4 is a front view showing the relationship between the side surface of the outer box of the refrigerator and the heat radiating pipe in the first embodiment of the present invention. FIG. 5 is an enlarged cross-sectional view of a portion D in FIG. FIG. 6 is a front view of a vacuum heat insulating material used for the refrigerator in the first embodiment of the present invention. FIG. 7 is a schematic sectional side view of the refrigerator according to the first embodiment of the present invention. 8 is a cross-sectional view taken along the line 8-8 in FIG. 9 is a cross-sectional view taken along line 9-9 of FIG.

1 to 5, the refrigerator in the present embodiment includes a heat insulating box 1 that opens forward and a door 2 that opens and closes a storage chamber in the heat insulating box 1. The heat insulating box 1 includes a metal outer box 3, a hard resin inner box 4, and a foam heat insulating material 5 filled between the outer box 3 and the inner box 4 by foaming. As shown in FIG. 5, a reinforcing member 6 for improving the strength is disposed on the lower side ridge line portion of the outer box 3. The reinforcing member 6 is formed to rise from the bottom surface of the outer box 3 to the back surface, and a space 7 communicating with the outside air is provided between the reinforcing member 6 and the outer box 3.

The storage room formed in the heat insulation box 1 is provided beside the refrigerating room 8 provided in the upper part, the switching room 9 provided under the refrigerating room 8 and capable of switching the temperature zone, and the switching room 9. The ice making room 10, the switching room 9, and the freezing room 12 provided between the ice making room 10 and the vegetable room 11.

There is a cooling chamber 14 on the back of the freezer compartment 12, which has a cooler 15 that generates cool air and a cool air blower fan 16 that supplies the cool air to each chamber, and a temperature detection sensor (not shown) in the cabinet. The internal temperature is controlled by a damper (not shown). In addition, a defrosting means 15 a is installed below the cooler 15.

The cooler 15 constitutes a refrigeration cycle in which a compressor 17, a condenser (not shown), a heat radiating pipe 18, and a capillary tube 19 are connected in an annular shape, and are compressed by the compressor 17. Cooling is performed by circulation of the cooled refrigerant.

As shown in FIG. 3, the heat insulating box 1 is provided with a heat radiating pipe 18, and the side heat radiating pipe 18S disposed on the side surface and the back surface has a heat radiating length by bending one pipe into, for example, a U-shape. Is secured to the outer box 3 using aluminum tape or the like. Similarly, a front heat radiating pipe 18F is also laid in a U-shape on the front surface of the partition plate 20 that partitions each storage chamber of the heat insulating box 1. The front heat radiating pipe 18F is connected to the machine room 13 through the partition plate 20 of each storage room.

The heat insulating box 1 has a vacuum heat insulating material 21 attached to the outer box 3 so as to cover the heat radiating pipe 18 in order to further improve the heat insulating property. This vacuum heat insulating material 21 is formed by covering a core material with a gas barrier film and reducing the pressure inside to seal it. For example, a vacuum heat insulating material having a structure as described in JP 2011-89740 A is used. ing.

As shown in FIG. 6, a concave groove 22 is formed in the vacuum heat insulating material 21, and a heat radiating pipe 18 is installed in the concave groove 22.

The concave groove 22 provided in the side vacuum heat insulating material 21 includes a vertical groove 22a, a horizontal groove 22b, and an outlet groove 22c, and the side heat radiating pipe 18S is arranged in a meandering manner in the concave groove 22.

The vertical groove 22a is a groove formed up to the upper and lower end face portions 23 of the vacuum heat insulating material 21 along the longitudinal direction of the vacuum heat insulating material 21 (that is, the vertical direction of the refrigerator), and a plurality of vertical grooves 22a are arranged in parallel to each other. Has been.

The horizontal grooves 22b are grooves extending along the short direction of the vacuum heat insulating material 21 (that is, the front-rear direction of the refrigerator), and are formed one by one in the vertical direction of the vertical groove 22a and are formed so as to intersect each other. . The lower lateral groove 22b is formed wider than the upper lateral groove 22b, and is disposed at least below the upper end of the bottom partition wall (not shown) of the refrigerator.

The outlet groove 22c is a groove formed from the upper end surface portion 23 of the vacuum heat insulating material 21 to the upper lateral groove 22b, and in this embodiment, a plurality of outlet grooves 22c are formed in line with the vertical groove 22a.

In the upper and lower horizontal grooves 22b, there are disposed folded portions 18Sa bent at the upper and lower ends of the side surface heat radiating pipe 18S.

In either one of the upper and lower grooves of the horizontal groove 22b (in this embodiment, the lower horizontal groove 22b), at least one of the side heat radiation pipe 18S or the front heat radiation pipe 18F is a refrigerant pipe (not shown) from the condenser. It is connected to.

The side heat radiating pipe 18S passes through the lower horizontal groove 22b of the vacuum heat insulating material 21 as the folded portion 18Sa, the straight portion is arranged in the vertical groove 22a, the bent portion 18Sb is arranged in the upper horizontal groove 22b, and meandering Placed in a state. After that, the side heat radiating pipe 18S is bent toward the outlet groove 22c formed in the upper part of the lateral groove 22b, and passes through the outlet groove 22c to the other surface of the outer box 3, in this embodiment, the outer box 3. Placed on the ceiling. With this arrangement of the side heat radiating pipe 18S, almost the entire side heat radiating pipe 18S meandering up and down is arranged between the vacuum heat insulating material 21 and the outer box side plate without jumping out from the upper and lower end surface portions 23 of the vacuum heat insulating material 21. The In other words, since the vacuum heat insulating material 21 is provided with the lateral grooves 22b, the upper and lower ends thereof are positioned over the upper and lower bent portions of the side surface heat radiating pipe 18S to the vicinity of the upper and lower ends of the outer casing 3, and are indicated by dotted lines in FIG. As shown, the outer box 3 covers almost the entire upper and lower sides.

The concave groove 22 formed in the vacuum heat insulating material 21 is formed by either a roller method or a press method. In the case of the press method, a die is required, leading to an increase in cost, and the degree of freedom in forming the concave groove is low. On the other hand, the roller method can form grooves on a straight line, but it is difficult to form complicated grooves. Therefore, the roller method or the press method may be selected depending on the groove shape.

Moreover, the vacuum heat insulating material 21 affixed to the left and right of the outer box 3 is chamfered so as to avoid the reinforcing member 6 shown in FIGS. 25 is formed. Moreover, the horizontal width of the vacuum heat insulating material 21 is formed to the dimension of the full width of the short side direction (namely, the front-back direction of a refrigerator) of the side surface of the outer box 3.

In addition, a reinforcing member chamfered portion 26 is formed on the upper portion of the reinforcing member 6 so as to correspond to the chamfered portion 25 on the vacuum heat insulating material 21 side, and does not overlap with the vacuum heat insulating material 21. In addition, the reinforcing member chamfered portion 26 reduces the area of the chamfered portion 25 of the vacuum heat insulating material 21, that is, reduces the decrease in the area of the vacuum heat insulating material 21 that is reduced by the chamfered portion 25.

Further, as shown in FIG. 5, a communication member 27 is provided in one of the upper and lower horizontal grooves 22b of the vacuum heat insulating material 21 disposed on at least one of the left and right sides of the outer box 3, in the lower horizontal groove 22b in the present embodiment. One end of the is disposed. The other end of the communication member 27 is inserted into a hole 28 of the reinforcing member 6 formed so as to rise from the bottom surface of the outer box 3 to the back surface, and communicates with the space 7 formed between the reinforcing member 6 and the outer box 3. The communication member 27 releases the air in the lateral groove 22b to the outside air.

In addition, the end of the side heat radiating pipe 18S is drawn out from the lower lateral groove 22b. In this embodiment, the pipe end 18T of the side radiating pipe 18S is a vacuum heat insulating material as shown in FIGS. The chamfered portion 25 of 21 is bent at least twice, and the turn portions 18Ta and 18Tb are drawn out at two or more locations.

Note that the chamfered portions 25 before and after the lower portion of the vacuum heat insulating material 21 are set to have a larger chamfer on the back surface (pipe end portion 18T storage side) than the front surface. Correspondingly, the height of the rising portion on the back surface from the bottom surface of the reinforcing member 6 is set higher than the height of the rising portion on the front surface.

Further, the reinforcing member 6 is arranged in a U-shape from the front part of the side surface of the outer box 3 along the bottom part and the rear part, and the upper ends of the front part and the rear part of the reinforcing member 6 located on the side surface of the outer box 3 Forms a reinforcing member chamfer 26.

Further, the lower lateral groove 22 b provided in the vacuum heat insulating material 21 is formed including the chamfered portion 25.

Further, the lower lateral groove 22 b provided in the vacuum heat insulating material 21 is formed below the upper ends of the front and rear portions of the reinforcing member 6.

Moreover, the groove width of the horizontal groove 22b is set wider than the groove width of the vertical groove 22a.

Further, of the horizontal grooves 22b provided at the top and bottom, the width of the lower horizontal groove 22b is set larger than that of the upper horizontal groove 22b.

About the refrigerator comprised as mentioned above, the operation | movement and effect | action below are demonstrated.

First, the cooling operation of the refrigerator will be described. When it is detected that the internal temperature has risen and the freezer compartment sensor (not shown) has reached the start temperature or higher, the compressor 17 is started and cooling is started. While the high-temperature and high-pressure refrigerant discharged from the compressor 17 finally reaches the dryer (not shown) disposed in the machine chamber 13, the outer casing is particularly at the side heat radiating pipe 18S installed in the outer casing 3. 3 is cooled and liquefied by heat exchange with the air outside 3 and the foamed heat insulating material 5 in the cabinet.

Next, the liquefied refrigerant is decompressed by the capillary tube 19, flows into the cooler 15, and exchanges heat with the internal air around the cooler 15. The heat-exchanged cold air is blown into the cabinet by the nearby cold air blower fan 16 to cool the inside of the cabinet. Thereafter, the refrigerant is heated and gasified to return to the compressor 17. When the inside of the refrigerator is cooled and the temperature detected by the freezer sensor (not shown) becomes equal to or lower than the stop temperature, the operation of the compressor 17 is stopped.

Next, the heat insulating action of the refrigerator and the vacuum heat insulating material 21 attached to the refrigerator will be described.

In the refrigerator of the present embodiment, the plate-like vacuum heat insulating material 21 is provided with the longitudinal grooves 22a and the transverse grooves 22b in the short direction. The straight portion of the side surface heat radiating pipe 18S is positioned in the vertical groove 22a, and the upper and lower folded portions 18Sa and 18Sb of the side surface heat radiating pipe 18S are positioned in the horizontal groove 22b. And since the plate-shaped vacuum heat insulating material 21 has covered the whole side surface heat radiating pipe 18S, it becomes possible to increase the coverage of the vacuum heat insulating material 21 without thickening a refrigerator wall and reducing the volume in a warehouse. . In addition, it is possible to insulate the heat radiation from the side heat radiating pipe 18S to the inside of the warehouse by the vacuum heat insulating material 21.

That is, it is assumed that the folded portion 18Sa of the side surface heat radiating pipe 18S is covered with the vacuum heat insulating material 21 having only the vertical grooves 22a without the lateral grooves 22b. If it does so, the space for the diameter of the heat radiating pipe 18 will be made between the outer case 3 and the vacuum heat insulating material 21 of the folding | returning part 18Sa part of the side surface heat radiating pipe 18S, and the refrigerator wall thickness will become thick, and the fall of the internal volume of the division will be caused. . However, according to the present embodiment, since the folded portion 18Sa of the side surface heat radiating pipe 18S is located in the lateral groove 22b, a space corresponding to the diameter of the heat radiating pipe 18 is formed between the vacuum heat insulating material 21 and the outer box 3. The wall thickness does not increase and the internal volume does not decrease.

Moreover, the conventional thing which only provided the vertical groove | channel in the vacuum heat insulating material as described in background art is the structure which does not cover the folding | returning part of a heat radiating pipe with a vacuum heat insulating material. For this reason, the upper and lower folded portions of the heat radiating pipe are exposed from the vertical grooves, and heat radiation from the folded portion of the heat radiating pipe to the inside of the cabinet cannot be insulated with the vacuum heat insulating material. Furthermore, the vertical dimension of the vacuum heat insulating material is also short, and the coverage of the vacuum heat insulating material is low.

However, as in the present embodiment shown in FIG. 6, a horizontal groove 22b is provided together with the vertical groove 22a, and the folded portion 18Sa of the side surface heat radiating pipe 18S is positioned in the horizontal groove 22b. By doing so, the folded portion 18Sa of the side heat radiating pipe 18S can be covered with the vacuum heat insulating material 21 without increasing the refrigerator wall thickness. Moreover, the vacuum heat insulating material 21 overlaps the upper and lower end edges of the side surface of the outer box 3, specifically, the ceiling wall thickness of the heat insulating box 1 as shown by the broken lines in FIG. Can be up to. Therefore, the heat radiation from the side heat radiating pipe 18S to the inside of the warehouse can be reliably insulated by the vacuum heat insulating material 21, and the coverage of the vacuum heat insulating material 21 can be dramatically increased. And the heat insulation of the heat insulation box 1 improves greatly by these synergistic actions.

In addition, the vacuum heat insulating material 21 of the present embodiment forms chamfered portions 25 at the front and rear lower portions of the vacuum heat insulating material 21 arranged on the side surface of the heat insulating box 1. Therefore, as shown in FIG. 7, even if the reinforcing member 6 or the like is present in the lower part of the side surface of the outer box 3 of the heat insulating box 1, the horizontal dimension of the vacuum heat insulating material 21 is widened and the downward dimension is maximized. Can be achieved.

Furthermore, the coverage on the side surface of the vacuum heat insulating material 21 can be significantly increased. In particular, since the vacuum heat insulating material 21 is arranged in the outer box 3 so as not to overlap the reinforcing member 6, the vacuum heat insulating material 21 is present at the lower portion of the side surface of the heat insulating box 1 at the chamfered portion 25. Etc. can be surely avoided. As a result, the vacuum heat insulating material 21 can maximize the downward dimension while widening the width of the vacuum heat insulating material 21 to a dimension that is almost full of the width of the side surface of the heat insulating box 1.

Therefore, the coverage of the side surface by the vacuum heat insulating material 21 can be significantly increased without impairing the strength increasing effect of the heat insulating box 1 by the reinforcing member 6. And since the lower part of the vacuum heat insulating material 21 does not overlap with the reinforcing member 6 or the like at the lower side of the heat insulating box 1, the gas barrier film of the vacuum heat insulating material 21 is damaged by overlapping with the reinforcing member 6, and its heat insulating performance is reduced. The fear of damage can be eliminated, and good thermal insulation performance can be secured over a long period of time.

Further, the reinforcing member 6 is arranged in a U-shape from the front part of the side surface of the outer box 3 along the bottom part and the rear part, and the upper ends of the front part and the rear part of the reinforcing member 6 located on the side surface of the outer box 3 Has a configuration in which a reinforcing member chamfer 26 is formed. From this, the vacuum heat insulating material 21 can reduce the chamfered portion 25 by the synergistic effect of the chamfered portion 25 of the vacuum heat insulating material 21 and the reinforcing member chamfered portion 26 of the reinforcing member 6. The area is increased, the coverage is improved, and higher heat insulation can be secured.

Further, the chamfered portion 25 provided in the vacuum heat insulating material 21 is formed in a portion where the lateral groove 22b is provided. In other words, the lower lateral groove 22 b provided in the vacuum heat insulating material 21 is formed including the chamfered portion 25. This maximizes the downward dimension of the vacuum heat insulating material 21 and improves the coverage of the vacuum heat insulating material 21 at the lower side of the side surface of the heat insulating box 1. Moreover, the folding | returning part 18Sa of the side surface heat radiating pipe 18S can be located in the horizontal groove 22b, and the coverage of the vacuum heat insulating material 21 with respect to the side surface heat radiating pipe 18S can also be aimed at, and the heat insulation can be made still higher.

Further, the lower lateral groove 22 b provided in the vacuum heat insulating material 21 is formed below the upper ends of the front and rear portions of the reinforcing member 6. Thereby, the folding | returning part 18Sa of the side surface heat radiating pipe 18S located below the upper end of the front part of the reinforcement member 6, and the back part 18Sa can be located in the horizontal groove 22b, and the coverage of the vacuum heat insulating material 21 with respect to the side surface heat radiating pipe 18S is improved. As a result, the heat insulation can be improved.

Further, as shown in FIG. 6, the lateral groove 22 b provided in the vacuum heat insulating material 21 is provided closer to the center than the upper and lower end face portions 23 of the vacuum heat insulating material 21. That is, the upper lateral groove 22 b is formed below the upper end surface portion 23, and the lower lateral groove 22 b is formed above the lower end surface portion 23. In addition, since the vertical groove 22a intersects with the horizontal groove 22b and is formed up to the upper and lower end surface portions 23 of the vacuum heat insulating material 21, thick portions 22d without grooves remain on the upper and lower end surface portions of the vacuum heat insulating material 21. .

Thereby, the strength of the upper and lower end surface portions 23 of the vacuum heat insulating material 21 is higher than that in the case where the lateral groove 22b is formed so as to face the end surface portion 23 of the vacuum heat insulating material 21 and the end surface portion 23 remains thin due to the groove. improves. And the curvature and deformation | transformation of the vacuum heat insulating material 21 become the minimum, the affixing to the outer box 3 becomes easy, and a man-hour reduction and quality improvement are attained.

Further, the thick heat insulating portions 22d of the upper and lower end surface portions 23 of the vacuum heat insulating material 21 are used as adhesive paste surfaces for attaching to the outer box 3, so that the vacuum heat insulating material 21 and the outer box 3 when filling the foam heat insulating material 5 are used. It becomes possible to prevent the inflow between the outer casings and the outer casing from being deformed by foaming pressure.

Furthermore, since the groove width of the horizontal groove 22b is wider than the groove width of the vertical groove 22a, it is possible to design the turn bending diameters of the upper and lower folded portions 18Sa and 18Sb of the side surface heat radiating pipe 18S passing through the horizontal groove 22b. It becomes.

This makes it possible to reduce the stretching force acting on the pipe wall when the folded portions 18Sa and 18Sb are bent. Furthermore, the reliability of the side surface heat radiating pipe 18S or the front surface heat radiating pipe 18F can be ensured without reducing the pipe diameter of the folded portions 18Sa and 18Sb.

In addition, since the width of the lower horizontal groove 22b of the horizontal grooves 22b provided above and below is larger than that of the upper horizontal groove 22b, the heat radiating pipe 18 and the like can be optimally installed and workability such as pipe connection is also improved. Can be improved. That is, the side surface heat radiating pipe 18S or the front surface heat radiating pipe 18F of the heat radiating pipe 18 needs to be welded to a refrigerant pipe (not shown) from the condenser. Moreover, since the side heat radiating pipe 18S is formed with folded portions 18Sa and 18Sb at the upper and lower portions, if the width of the lower lateral groove 22b is increased, a large number of folded portions 18Sa of the side surface heat radiating pipe 18S are arranged in the lower lateral groove 22b. it can. Furthermore, the front heat radiating pipe 18F can be provided with many pipes such as piping to the front part of the partition plate 20 through the lateral groove 22b. Moreover, the connection work for welding the side heat radiating pipe 18S or the front heat radiating pipe 18F and the refrigerant pipe (not shown) from the condenser is not the upper side of the outer box 3 but the lower side of the outer box 3 when it exits the lateral groove 22b. Can be performed at a low position. For this reason, the workability can be improved simultaneously with the optimal installation of the heat radiating pipe 18.

In addition, although it is conceivable that the horizontal grooves 22b are provided in two or more rows according to the required performance of the refrigerator, in that case, it is preferable to maximize the width dimension of the horizontal grooves 22b provided in the lowermost part.

Further, in the present embodiment, the pipe end portion 18T which is the connecting portion of the side surface heat radiating pipe 18S and the front surface heat radiating pipe 18F arranged in the lateral groove 22b has two or more turn portions 18Ta and 18Tb as shown in FIGS. It is formed. With this configuration, the vacuum heat insulating material 21 attached to the inner surface of the outer box 3 is peeled off or damaged when the side heat radiating pipe 18S or the front heat radiating pipe 18F is connected to the refrigerant pipe (not shown) from the condenser by welding. To prevent. And the heat insulation performance of the vacuum heat insulating material 21 can be maintained satisfactorily, and the outer appearance deformation of the outer box 3 and the heat radiation capability reduction from the side heat radiation pipe 18S can be prevented.

That is, the pipe end portion 18T of the side heat radiating pipe 18S or the front surface heat radiating pipe 18F is accommodated along the inner surface of the outer box 3 as shown in FIG. 7 so as not to disturb the assembly. Further, when the pipe end 18T is connected by welding or the like, the pipe end 18T is pulled out from the outer box 3. However, there is a concern that an external force in the peeling direction is applied to the vacuum heat insulating material 21 via the pipe end 18T, and the vacuum heat insulating material 21 is peeled off or damaged from the inner surface of the outer box 3. In addition, there is a concern that the outer appearance of the outer box 3 may be deformed or the heat radiation capability of the side heat radiation pipe 18S may be reduced.

However, in this embodiment, since two or more turn portions 18Ta and 18Tb are formed in the pipe end portion 18T, the turn portions 18Ta and 18Tb serve as a buffer (deformation absorption) of external force when the pipe is pulled. And the vacuum heat insulating material 21 affixed to the outer box 3 can be prevented from being peeled off and damaged, and at the same time, the outer appearance of the outer box 3 can be prevented from being deformed and the heat dissipation capability from the heat radiating pipe 18 can be prevented from being lowered.

Further, since the vacuum heat insulating material 21 in the portion where the pipe end portion 18T is located is a chamfered portion 25, the turn portions 18Ta and 18Tb can be provided without difficulty using the chamfered portion 25. In addition, the dimensions from the turn portions 18Ta and 18Tb to the portion X where the pipe end portion 18T shown in FIG. 7 enters the lateral groove 22b can be increased. With this configuration, it is possible to improve the peeling prevention effect and the damage prevention effect by applying external force to the vacuum heat insulating material 21 while improving the coverage of the vacuum heat insulating material 21.

Further, in the refrigerator of the present embodiment, the air in the vertical groove 22a and the horizontal groove 22b of the vacuum heat insulating material 21 expands due to heat radiation from the side heat radiating pipe 18S or the front heat radiating pipe 18F, and the pressure rises. Accordingly, there is a possibility of causing deformation along the side surface heat radiating pipe 18S on the side surface of the outer box 3, but deformation of the outer box 3 can be prevented by the communication member 27 provided in the lateral groove 22b.

That is, in the present embodiment, as shown in FIG. 5, the communication member 27 that faces the space 7 is provided in the lower lateral groove 22b, so that the outside air and the inside of the vertical groove 22a and the lateral groove 22b are vented through the communication member 27. Can be made. And the pressure change by the temperature change resulting from the heat radiation of the heat radiating pipe 18 can be suppressed, and the external deformation of the outer box 3 can be prevented.

Further, as shown in FIGS. 8 and 9, since the groove width of the horizontal groove 22b is set larger than that of the vertical groove 22a, the air staying in the plurality of vertical grooves 22a can easily flow to the side of the horizontal groove 22b. ing. Furthermore, since the communication member 27 is provided in the horizontal groove 22b, the air staying in the plurality of vertical grooves 22a also flows out to the outside in a short time including the air in the horizontal grooves 22b.

Moreover, since the folded groove 18Sa of the side surface heat radiating pipe 18S and the front surface heat radiating pipe 18F are disposed in the wide groove 22b having a large groove width, the temperature of the air in the horizontal groove 22b itself is high. Therefore, the staying air can be circulated more easily, and smooth air discharge can be realized.

Furthermore, since the communication member 27 is only inserted into the hole 28 of the reinforcing member 6 and communicated with the outside air through the space 7 provided in the reinforcing member 6, the number of parts is small, and the communication member 27 The shape can be simplified. For example, the communication member 27 can be produced by extrusion molding into a linear shape using a resin, and material costs and man-hour costs can be suppressed.

Further, the foam insulating material 5 filled between the outer box 3 and the inner box 4 of the heat insulating box 1 is subjected to the following method in order to improve the filling property. That is, the material of the foam heat insulating material 5 is injected downward from an opening (not shown) provided on the back surface of the heat insulating box 1 with the front opening of the heat insulating box 1 facing the bottom.

Then, a method is adopted in which the foam heat insulating material 5 is foam-filled from the lower side (front opening side) toward the upper side (back side of the heat insulating box 1) gradually. In the present embodiment, one end of the communication member 27 is disposed along the horizontal groove 22 b of the vacuum heat insulating material 21, and the other end is communicated with the outside air on the back side of the heat insulating box 1. For this reason, air escapes through the communication member 27 in the same direction as the foam insulation material 5 is foam-filled, and the efficiency of air venting in the groove during foam-filling can be improved.

Although the communication member 27 has been described as being linear, the communication member 27 may be composed of a portion parallel to the lateral groove 22b and a portion that is bent and raised. This is because a foaming jig is used to prevent deformation due to foaming pressure when the foam insulation 5 is filled between the outer box 3 and the inner box 4, but the heat radiating pipe 18 fixed to the outer box 3 and the communication are used. The escape effect is exhibited so that the member 27 does not interfere with the foaming jig. And by this structure, after filling the heat insulation box 1 with the foam heat insulating material 5, the thermal radiation pipe 18 and the communication member 27 can be pulled out and the degree of freedom for arranging in a predetermined position can be given.

(Second Embodiment)
FIG. 10: is a front view which shows the vacuum heat insulating material of the refrigerator in the 2nd Embodiment of this invention.

The vacuum heat insulating material 31 of the present embodiment is different from the first embodiment in the shape of a partial groove 32c that is an upper lateral groove. That is, the partial groove 32c, which is a lateral groove on the upper side of the vacuum heat insulating material 31, is a partial groove only for a portion through which a side heat radiating pipe (not shown) is passed. The thick portion 32d is a glue surface for attachment. Other configurations are the same as those of the first embodiment. In addition to the partial groove 32c, the vacuum heat insulating material 31 is formed with a vertical groove 32a and a lower horizontal groove 32b. A portion 35 is formed.

According to this embodiment, the strength of the edge portion of the vacuum heat insulating material 31 can be improved, warpage and deformation can be minimized, and attachment to the outer box 3 can be facilitated. Therefore, man-hours can be reduced. In addition, it is possible to improve the coverage of the vacuum heat insulating material 31 by optimizing the partial groove 32c that accommodates the side surface heat radiating pipe (not shown).

Further, since the end of the partial groove 32c formed as a partial groove is in communication with the vertical groove 32a, the positions of the partial groove 32c and the vertical groove 32a, which are the upper horizontal grooves at the time of groove formation, vary. However, this variation can be absorbed and the productivity of groove formation can be improved.

(Third embodiment)
FIG. 11: is a front view which shows the vacuum heat insulating material of the refrigerator in the 3rd Embodiment of this invention.

The vacuum heat insulating material 41 of the present embodiment is provided by adding a local groove 42e connected from the upper end surface portion 43 of the vacuum heat insulating material 41 to the upper horizontal groove 42b between the vertical grooves 42a. Other configurations are the same as those of the first embodiment. The vacuum heat insulating material 41 is formed with vertical grooves 42 a and horizontal grooves 42 b, and chamfered portions 45 are formed before and after the lower portion of the vacuum heat insulating material 41. . Side radiating pipes 18S are arranged in the vertical grooves 42a and the horizontal grooves 42b, and the folded portions 18Sa and 18Sb are arranged in the horizontal grooves 42b.

The local grooves 42e formed between the thick-walled portions 42d are formed so as to be connected between the vertical grooves 42a from the upper end surface portion 43 of the vacuum heat insulating material 41 to the upper lateral grooves 42b. And the other side of the side surface heat radiating pipe 18S, that is, the bent portion 18Sb of the bridging portion to the ceiling surface in the present embodiment is housed.

That is, in the side surface heat radiating pipe 18S, an L-shaped bent portion 18Sb serving as a bridging portion from the ceiling surface of the outer box 3 is disposed in the local groove 42e, and the folded portion 18Sa is disposed in the lower lateral groove 42b. Further, the end portion of the side surface heat radiating pipe 18S passes through another local groove 42e and is again arranged to be bridged to the ceiling surface of the outer box 3.

Therefore, almost the entire side heat radiating pipe 18 </ b> S is disposed between the vacuum heat insulating material 41 and the side plate of the outer box 3 without jumping out from the upper and lower end surface portions 43 of the vacuum heat insulating material 41. In other words, the vacuum heat insulating material 41 is provided with the lateral grooves 42b and the local grooves 42e so that the upper and lower ends thereof are positioned near the upper and lower ends of the outer casing 3 beyond the upper and lower bent portions of the side heat radiating pipe 18S. . Therefore, the vacuum heat insulating material 41 covers substantially the entire upper and lower sides of the side surface of the outer box 3 as shown by the dotted line in FIG.

According to the present embodiment, the coverage of the vacuum heat insulating material 41 is increased while maintaining the folding quality of the side surface heat radiating pipe 18S from the side surface of the heat insulating box 1 to the other surface, in this embodiment, the ceiling surface. be able to.

That is, the outer box 3 of the heat insulating box 1 is formed by bending a flat plate into a U-shape to form a top surface and both side surfaces. However, since the heat radiating pipe 18 previously attached to the flat plate has a stretching force when it is bent, the bent portion may be deformed such that the pipe diameter becomes thin or the pipe wall thickness becomes thin, and there is a concern about quality deterioration. .

In order to prevent this, the bridging pipe portion of the heat radiating pipe forms a bent portion 18Sb in an L shape to absorb the stretching force that acts during bending and stabilize the quality. However, when such an L-shaped bent portion 18Sb is formed, the vacuum heat insulating material is shortened by the size of this portion, and the coverage is reduced.

However, according to this embodiment, the L-shaped bent portion 18Sb of the bridging pipe portion of the heat radiating pipe can be fitted into the lateral groove 42b and the local groove 42e connected to the lateral groove 42b. For this reason, the dimension of the vacuum heat insulating material 41 can be lengthened to the portion that also covers the L-shaped bent portion 18Sb, and the bending quality of the bridge pipe portion is also maintained by providing the L-shaped bent portion 18Sb. It can be done.

The specific configuration of the present invention has been described above with reference to each embodiment. However, this is shown as an embodiment for carrying out the present invention, and it goes without saying that various modifications can be made within the scope of the object of the present invention. .

For example, the vertical grooves 22a and the horizontal grooves 22b may be increased or decreased in addition to the number illustrated, and may be appropriately selected according to the required performance of the refrigerator.

The configuration of the vertical grooves 22a, 32a, 42a and the horizontal grooves 22b of the vacuum heat insulating materials 21, 31, 41 provided on the side surface of the heat insulating box 1 is adopted in the vacuum heat insulating materials 21, 31, 41 provided on the back surface of the heat insulating box. Thus, the coverage may be improved, and the same effect can be obtained.

As described above, the present invention is provided with a heat insulating box body filled with a foam heat insulating material between the outer box and the inner box, a heat radiating pipe disposed inside the outer box, and an inner side of the heat radiating pipe. A vacuum insulation material. The vacuum heat insulating material has a concave groove, and a heat radiating pipe is disposed in the groove, and chamfered portions are formed at the front and rear lower portions of the vacuum heat insulating material provided on the side surface of the heat insulating box.

As a result, even if there is a reinforcing member in the lower part of the outer side of the outer box of the heat insulating box, the vacuum heat insulating material is designed to maximize the downward dimension while ensuring a wide width, and to cover the side of the heat insulating box. Can be greatly increased. Thereby, it is possible to provide a refrigerator having high heat insulating properties.

In addition, the present invention is provided with a reinforcing member at the lower side of the outer box side surface of the heat insulating box, and the vacuum heat insulating material is configured by covering the core material with a gas barrier film and reducing the pressure inside to seal, and does not overlap the reinforcing member. You may arrange in an outer box.

Thereby, the vacuum heat insulating material can avoid the reinforcing member existing at the lower part of the side surface of the heat insulating box at the chamfered portion. As a result, the vacuum insulation material can be maximized in the downward dimension while increasing its lateral width to a dimension that is almost full of the lateral width of the side surface of the thermal insulation box.

Therefore, the side coverage can be greatly increased without impairing the effect of reinforcing the box strength by the reinforcing member. Moreover, since the lower part of the vacuum heat insulating material does not overlap with the reinforcing member etc. on the lower side of the heat insulating box body, the concern that the gas barrier film of the vacuum heat insulating material is damaged by the overlapping with the reinforcing member and the heat insulating performance is impaired is also eliminated. And good thermal insulation performance can be secured over a long period of time.

Further, the present invention provides a reinforcing member surface on the upper ends of the front and rear portions of the reinforcing member that is disposed in a U shape from the front portion to the bottom portion and the rear portion of the outer case side surface. A catch may be formed.

As a result, the synthesizing effect of the chamfered portion of the vacuum heat insulating material and the reinforcing member chamfered portion of the reinforcing member can reduce the chamfered portion of the vacuum heat insulating material, thereby increasing the area and improving the coverage rate. Thermal insulation can be ensured.

Further, the present invention may be configured such that the vacuum heat insulating material has a transverse groove that is concave in the front-rear direction, and the bottom transverse groove is formed including the chamfered portion.

As a result, the vacuum insulation material coverage ratio for the heat radiation pipe is improved by maximizing the downward dimension of the vacuum heat insulation material and improving the vacuum heat insulation material coverage ratio at the bottom of the side surface while positioning the bent portion of the heat radiation pipe in the lateral groove. And the heat insulating property can be further increased.

Further, in the present invention, the vacuum heat insulating material may have a lateral groove that is concave in the front-rear direction, and the lowermost lateral groove may be formed below the front and rear upper ends of the reinforcing member.

As a result, the folded portion of the heat radiating pipe located below the upper ends of the front and rear portions of the reinforcing member can be positioned in the lateral groove, and the heat insulation is further improved by improving the coverage of the vacuum heat insulating material on the heat radiating pipe. be able to.

The present invention also includes a heat insulating box body filled with a foam heat insulating material between the outer box and the inner box, a heat radiating pipe disposed inside the outer box, and a vacuum heat insulating provided inside the heat radiating pipe. The vacuum heat insulating material may have a plurality of concave lateral grooves in the front-rear direction, and the width dimension of the lowermost lateral groove may be maximized.

This makes it possible to prevent the refrigerator wall from becoming thicker by fitting the folded portion of the heat radiating pipe into the lateral groove and covering it with a vacuum heat insulating material. Moreover, the vacuum heat insulating material can be sized so as to cover the folded portion of the heat radiating pipe, and the heat insulation from the heat radiating pipe to the inside of the cabinet is reliably insulated with the vacuum heat insulating material, and the coverage of the vacuum heat insulating material is also improved. It can be increased dramatically, and a refrigerator with high heat insulation can be obtained. In addition, by maximizing the width dimension of the bottom horizontal groove, the pipes can be concentrated and arranged in the lower part where the pipe connection work is easy to perform, so that the heat radiation pipe can be optimally installed and the pipe connection workability is improved. be able to.

Further, in the present invention, a plurality of heat radiating pipes may be arranged in the bottom horizontal groove. This makes it possible to optimally install a heat radiating pipe.

The present invention also includes a heat insulating box filled with a foam heat insulating material between the outer box and the inner box, a heat radiating pipe disposed inside the outer box, and a vacuum heat insulating material attached to the inner side of the heat radiating pipe. Material. Further, the vacuum heat insulating material may have a concave groove, and a heat radiating pipe may be disposed in the groove, and two or more turn portions may be formed at the end of the heat radiating pipe disposed in the groove.

This makes it possible to prevent the refrigerator wall from becoming thick by covering the heat radiating pipe with the vacuum heat insulating material. In addition, the turn part provided at the pipe end of the heat radiating pipe provides a buffer (deformation absorption) when the heat radiating pipe is pulled when the pipe is welded, and prevents the vacuum heat insulating material attached to the outer box from peeling off. Maintain good thermal insulation performance. In addition, it is possible to prevent external deformation of the outer box and a decrease in heat radiation capacity from the heat radiation pipe.

Further, in the present invention, the storage chamfered portion may be formed at the corner of the vacuum heat insulating material, and the pipe end portion may be stored in the storage chamfered portion.

As a result, even if there are obstacles such as reinforcing members on the lower side of the outer box side of the heat insulation box, the vacuum heat insulating material maximizes the downward dimension while ensuring a wide width, and the side coverage ratio It is possible to greatly improve the heat insulation. Furthermore, the peeling prevention effect of the vacuum heat insulating material at the time of pipe drawing can be improved.

The present invention also includes a heat insulating box body filled with a foam heat insulating material between the outer box and the inner box, a heat radiating pipe disposed inside the outer box, and a vacuum heat insulating provided inside the heat radiating pipe. Material. Further, the vacuum heat insulating material may have a concave groove, and a local groove that is formed at least from the end face of the vacuum heat insulating material and does not cross the vacuum heat insulating material may be provided, and the bridging bent portion of the radiating pipe may be passed through the local groove.

This makes it possible to improve the coverage of the vacuum heat insulating material by covering the bridge bent portion of the heat radiating pipe with the vacuum heat insulating material. In addition, it is possible to bend the heat radiation pipe from the side surface of the heat insulation box to the other surface, for example, the ceiling surface without difficulty. be able to.

Further, in the present invention, the heat radiating pipe stored in the local groove may be a heat radiating pipe that is connected from one surface of the heat insulating box to the other surface. Thereby, the coverage of a vacuum heat insulating material can be raised and heat insulation can be improved, maintaining the bending quality of a heat radiating pipe.

The present invention also includes a heat insulating box body filled with a foam heat insulating material between the outer box and the inner box, a heat radiating pipe disposed inside the outer box, and a vacuum attached to the inner side of the heat radiating pipe. Insulating material. The vacuum heat insulating material may have a plurality of concave lateral grooves in the front-rear direction, and may have a partial groove that is not formed at least up to the end face of the vacuum heat insulating material.

This makes it possible to suppress the thickness of the refrigerator wall from being increased by fitting the folded portion of the heat radiating pipe into the transverse groove of the vacuum heat insulating material. Moreover, the vacuum heat insulating material can be sized so as to cover the folded portion of the heat radiating pipe, and the heat insulation from the heat radiating pipe to the inside of the cabinet is reliably insulated with the vacuum heat insulating material, and the coverage of the vacuum heat insulating material is also improved. It can be increased dramatically. Moreover, the transverse groove of the vacuum heat insulating material can secure the strength of the edge portion only as a necessary portion, and can minimize warping and deformation of the outer box.

Further, the present invention may be configured such that the end of the partial groove communicates with a vertical groove formed in the vertical direction. Thereby, even if there is a variation in the communication position of the horizontal groove and the vertical groove, this variation can be absorbed, and the productivity of groove formation can be improved.

The present invention can increase the coverage of the vacuum heat insulating material and greatly improve the heat insulating property of the refrigerator, and can be applied to various refrigerators including home use and business use.

DESCRIPTION OF SYMBOLS 1,102 Heat insulation box 2 Door 3,101 Outer box 4,103 Inner box 5,104 Foam insulation 6 Reinforcement member 7 Space 8 Refrigeration room 9 Switching room 10 Ice making room 11 Vegetable room 12 Freezer room 13 Machine room 14 Cooling room DESCRIPTION OF SYMBOLS 15 Cooler 16 Cold air blower fan 17 Compressor 18,105 Radiation pipe 18S Side surface radiation pipe 18F Front radiation pipe 18T Pipe end 18Sa Folding part 18Sb Bending part 18Ta, 18Tb Turn part 19 Capillary tube 20 Partition plates 21, 31, 41, 106 Vacuum insulation 22a, 32a, 42a Vertical groove 22b, 32b, 42b Horizontal groove 32c Partial groove 22c Outlet groove 22d, 32d, 42d Thick part 23, 43 End face part 24 Bottom partition wall 25, 35, 45 Chamfer part 26 Reinforcement Member chamfer 27 Communication member 28 Hole 42e Local groove 107 Groove

Claims (13)

A heat insulating box filled with a foam heat insulating material between the outer box and the inner box, a heat dissipating pipe disposed inside the outer box, and a vacuum heat insulating material provided inside the heat dissipating pipe. The vacuum heat insulating material has a concave groove, and the heat radiating pipe is disposed in the groove, and the vacuum heat insulating material provided on the side surface of the heat insulating box body has a chamfered portion at the front and back thereof. refrigerator. A reinforcing member is provided at a lower portion of the side surface of the outer box of the heat insulating box, and the vacuum heat insulating material is configured by covering the core material with a gas barrier film and depressurizing and sealing the inside thereof, so as not to overlap the reinforcing member. The refrigerator according to claim 1 arranged in the outer box. The reinforcing member is arranged in a U-shape from the front part of the side surface of the outer box along the bottom part and the rear part, and a reinforcing member chamfered part is formed at the upper ends of the front part and the rear part of the reinforcing member. Refrigerator. The said vacuum heat insulating material provided in the side surface of the said heat insulation box has a horizontal groove of the concave shape in the front-back direction, The said horizontal groove of the lowest part was formed including the said chamfering part of the said vacuum heat insulating material. The refrigerator described. The said vacuum heat insulating material provided in the side surface of the said heat insulation box has a concave groove | channel in the front-back direction, The said horizontal groove of the lowest part was formed below the upper part of the front part of the said reinforcement member, and the rear part. Refrigerator. A heat insulating box filled with a foam heat insulating material between the outer box and the inner box, a heat dissipating pipe disposed inside the outer box, and a vacuum heat insulating material provided inside the heat dissipating pipe. The vacuum heat insulating material provided on the side surface of the heat insulation box has a plurality of concave lateral grooves in the front-rear direction, and the width dimension of the lateral groove at the lowest level is maximized. The refrigerator according to claim 6, wherein a plurality of heat radiating pipes are arranged in the lateral groove at the lowest stage. A heat insulating box filled with a foam heat insulating material between the outer box and the inner box, a heat dissipating pipe disposed inside the outer box, and a vacuum heat insulating material provided inside the heat dissipating pipe. The vacuum heat insulating material has a concave groove, the heat radiating pipe is disposed in the groove, and the end portion of the heat radiating pipe disposed in the groove has two or more turn portions. The refrigerator according to claim 8, wherein a storage chamfer is formed at a corner of the vacuum heat insulating material, and the pipe end of the heat radiating pipe is stored in the storage chamfer. A heat insulating box filled with a foam heat insulating material between the outer box and the inner box, a heat dissipating pipe disposed inside the outer box, and a vacuum heat insulating material provided inside the heat dissipating pipe. The vacuum heat insulating material has a concave groove, and a local groove that does not cross the vacuum heat insulating material formed at least from the end surface of the vacuum heat insulating material is provided in the vacuum heat insulating material, and the heat radiating pipe is bridged to the local groove. Refrigerator configured to pass the bent part. The said heat radiating pipe accommodated in the said local groove | channel is a refrigerator of Claim 10 connected from the one surface of the said heat insulation box to another surface. A heat insulating box filled with a foam heat insulating material between the outer box and the inner box, a heat dissipating pipe disposed inside the outer box, and a vacuum heat insulating material provided inside the heat dissipating pipe. The refrigerator provided with a plurality of concave lateral grooves in the front-rear direction and having a partial groove that does not form at least the end surface of the vacuum thermal insulator in the lateral groove. The refrigerator according to claim 12, wherein the partial groove communicates with a vertical groove having a terminal end formed in a vertical direction.

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