JP6133378B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator configured to use a vacuum heat insulating panel as a heat insulating wall of a refrigerator body.

  An example of this type of refrigerator is described in Patent Document 1. In this refrigerator, a vacuum heat insulation panel is disposed in a space between the inner box and the outer box, and urethane foam is filled. That is, the heat insulating wall of the refrigerator main body is configured by using both the vacuum heat insulating panel and the urethane foam.

Japanese Patent Laid-Open No. 2002-90048

  In the case of the above configuration, since the vacuum insulation panel and urethane foam are used in combination, the insulation performance of the urethane foam part is inferior, so even though the vacuum insulation panel is used, the insulation performance can be increased as expected. There wasn't. For example, since the thickness dimension of the heat insulation wall of the urethane foam part which is inferior in heat insulation performance has to be increased, there has been a problem that the thickness dimension of the entire heat insulation wall is increased. However, even if the heat insulation wall of the refrigerator body is configured only by the vacuum heat insulation panel, the shape of the heat insulation wall is complicated, but the vacuum heat insulation panel can only be manufactured to be almost a rectangular panel, so its realization is quite It was difficult. In particular, connecting means arranged so as to penetrate the inside and outside of the refrigerator main body, such as electrical wiring, drainage paths, or refrigerant pipes for refrigeration cycles, etc. have been embedded in urethane foam in the conventional configuration. However, how to arrange these parts with respect to the heat insulating wall constituted only by the vacuum heat insulating panel has been a problem, and it has been quite difficult to realize.

  The objective of this invention is providing the refrigerator which can make the heat insulation performance of a refrigerator main body high, and can implement | achieve the structure comparatively easily.

Refrigerator embodiment, in the refrigerator comprising refrigerators body arranged to arranged to sandwich the box-like heat-insulating wall body between the inner box and the outer box, the left side surface of the box-shaped heat insulation wall body, right A vacuum heat insulation panel is disposed on the surface, back surface, and bottom surface, and the left side vacuum heat insulation panel and the right side vacuum heat insulation panel are cut obliquely at portions corresponding to the machine room. The back vacuum insulation panel extends to the left and right corners of the inner box, and the left and right sides of the back vacuum insulation panel are close to the left side vacuum insulation panel and the right side vacuum insulation panel. The bottom surface vacuum heat insulation panel is bent inward at a portion corresponding to the machine room. A separation portion is provided between the back vacuum insulation panel and the bottom vacuum insulation panel, and a connection means is introduced into the machine room through the separation portion, and the connection means includes a refrigerant pipe and a drain. The refrigerant pipe is wound in front of the rear vacuum heat insulation panel, and the drainage path extends in the vertical direction. In the separation portion, the bottom surface vacuum heat insulation panel is in contact with the inner box, and the bottom surface vacuum heat insulation panel protrudes away from the outer box, and further, the bottom surface vacuum heat insulation panel and the rear surface vacuum heat insulation panel A foam insulation means is provided between the panels .

The perspective view of the refrigerator main body which shows 1st Embodiment of this invention. Partial sectional view of the refrigerator body Perspective view of box-shaped insulation wall Exploded perspective view of box-shaped insulation wall Partial sectional view of vacuum insulation panel Vertical side view of the bottom of the refrigerator Partial perspective view seen from the rear side of the machine room of the refrigerator Partial perspective view seen from the back side of the lower part of the box-shaped insulation wall Equivalent to FIG. 8 with urethane foam disposed in the spacing Disassembled perspective view of the lower part inside the refrigerator body Perspective view of the lower part inside the refrigerator body Longitudinal side view of the part of the refrigerator body where the heat exchange part of the refrigerant pipe is arranged Exploded perspective view showing heat exchange part of heat insulating material and refrigerant pipe The perspective view which shows the state which covered the heat exchange part of the refrigerant | coolant pipe with the heat insulating material. Longitudinal side view of the part of the refrigerator body where the drainage path is arranged FIG. 12 equivalent view showing a second embodiment of the present invention. Figure 10 equivalent FIG. 12 equivalent view showing the third embodiment of the present invention FIG. 15 equivalent view showing the fourth embodiment of the present invention. FIG. 19 equivalent diagram showing the fifth embodiment of the present invention. FIG. 8 equivalent view showing the sixth embodiment of the present invention Fig. 9 equivalent Top view of vacuum insulation panel FIG. 4 equivalent diagram showing a seventh embodiment of the present invention

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, FIG. 1 is a perspective view schematically showing the overall configuration of the refrigerator main body 1 of the present embodiment, and FIG. 2 is a partial longitudinal sectional view of the refrigerator main body 1. The refrigerator body 1 includes a metal plate (steel plate, SUS plate, etc.) outer box 2, a resin inner box 3, and a box-shaped heat insulation disposed so as to be sandwiched between the inner box 3 and the outer box 2. It is comprised from the wall 4.

  FIG. 3 is a perspective view showing the overall configuration of the box-shaped heat insulating wall 4 alone. As shown in FIG. 4, the box-shaped heat insulating wall 4 is configured by combining two or more vacuum heat insulating panels 5, 6, 7, 8, 9, for example. Each vacuum heat insulation panel 5-9 is formed in the substantially rectangular plate shape, The thickness dimension is about 10-20 mm, for example. The shape of the vacuum heat insulating panels 5 and 6 is substantially trapezoidal with the rear end of the lower end portion being obliquely cut, and the shape of the vacuum heat insulating panel 9 is substantially bent into a "<" shape at the middle portion. ing.

  When assembling the five vacuum heat insulating panels 5 to 9 in a box shape, the outer box 2 and the inner box 3 are previously bonded to the outer and inner surfaces of the vacuum heat insulating panels 5 to 9 via an adhesive. In this case, the outer box 2 and the inner box 3 are formed in a size slightly larger than the size of the vacuum heat insulation panels 5 to 9, and the vacuum heat insulation panels 5 to 9 are provided at the upper, lower, left and right ends thereof. A connecting piece for connecting, a cover piece covering the end face portions of the vacuum heat insulating panels 5 to 9 and the like are formed.

  For example, as shown in FIG. 2, when two vacuum heat insulating panels 5 and 7 are connected, the connecting piece 2 a at the upper end of the outer box 2 of the vacuum heat insulating panel 5 and the outer box 2 of the vacuum heat insulating panel 5. The connection piece 2b at the left end of the vacuum heat insulation panel 5 is connected by screws, welding or the like, and the connection piece 3a at the upper end of the inner box 3 of the vacuum heat insulation panel 5 is connected to the left end of the inner case 3 of the vacuum heat insulation panel 5. The piece 3b is connected by screws or welding. And the refrigerator main body 1 shown in FIG. 1 is manufactured by connecting the five vacuum heat insulation panels 5-9 in a similar manner. In FIG. 2, the space portion 10 formed in the joining portion (that is, the joint portion) of the two vacuum heat insulation panels 5 and 7 is made so that the volume of the space portion 10 becomes as small as possible, that is, the vacuum heat insulation panel. It is preferable to design the size and arrangement of both panels 5 and 7 so that 5 and 7 are as close as possible. The space 10 is preferably filled with a heat insulating material (not shown) such as urethane foam.

  Here, a specific configuration of the vacuum heat insulation panels 5 to 9 will be briefly described with reference to FIG. The vacuum heat insulation panels 5-9 are comprised from the core material 11 and the outer packaging material 12 which consists of a metal foil laminated film etc. which have a gas barrier property while having a plastic layer for heat welding. The core 11 is composed of an inorganic fiber laminate 13 and an inner bag 14. The inner bag 14 is formed of a bag made of a synthetic resin film such as a polyethylene film having a thickness of 20 μm, for example. The inorganic fiber laminate 13 is made of natural fibers such as glass wool, glass fiber, alumina fiber, silica alumina fiber, or cotton. The core material 11 is a roll-shaped inorganic fiber laminate 13 made in advance with a thickness of 100 mm to 150 mm, cut into set dimensions, folded in two or three, and the inner bag 14 (polyethylene synthetic resin with a thickness of around 20 μm). After being stored in the resin film), the inorganic fiber laminate is compressed using a press or the like, then the inner bag 14 is depressurized, and then the opening of the inner bag 14 is heated using a heat welding machine. Made by welding and sealing. In addition, as for the laminated body 20 of the said inorganic fiber, what was 200-300 mm in thickness dimension in the state of the raw cotton before a compression process (decompression process) is compressed by about 8-15 mm by a compression (decompression) process, for example. The

  When the core material 11 having the above-described configuration is accommodated in the outer packaging material 12 (metal foil laminate film), and the inner packaging material 12 is decompressed and welded and sealed, the configuration shown in FIG. 7A is obtained. The outer packaging material 12 is composed of a plastic-metal foil laminate film. When the opening of the outer packaging material 12 is welded and sealed, the plastic portion is melted and welded.

  In the vacuum heat insulating panels 5 to 9 made in this way, the ear part 12a including the ear part 14a of the inner bag 14 is finally placed on the upper surface side with the root of the ear part as a base point as shown in FIG. It is folded and fixed with a tape or the like (not shown). In this case, since the end portion of the core material 11 is rounded, the ear portion 12a is folded along the roundness, and can be folded without creating a convection space between the ear portion 12a and the outer packaging material 12. Thereby, formation of the convection space of the heat conventionally added to the heat transfer conducted through the metal part (barrier layer) which the outer packaging material 12 of the vacuum heat insulation panels 5-9 has can be suppressed to the minimum.

  The vacuum heat insulating panels 5 to 9 having the above-described configuration can be bent. In the case of this embodiment, the vacuum heat insulation panel 9 corresponding to the bottom plate part and the lower part of the back part of the refrigerator body 1 is bent so that the cross section has a substantially “<” shape.

  Now, as shown in FIG. 6, a refrigerator 15 for cooling the interior of the refrigerator body 1 and a cooling fan device 16 are disposed inside the refrigerator body 1. The device 16 is covered with a cover 17. A defrost heater (not shown) is disposed in the vicinity of the cooler 15, and a water receiver 19 for receiving defrost water is disposed below the cooler 15. In addition, a partition wall 20 and a partition plate (not shown) that divide the inside of the refrigerator into a plurality of rooms (freezer compartment, refrigerator compartment, vegetable compartment, etc.) are disposed inside the refrigerator body 1.

  In addition, as shown in FIG. 7, the compressor 22, the radiator 23, the heat radiating fan device 24, and the defrosting are also provided outside the refrigerator body 1, particularly in the lower machine room 21. An evaporating dish 25 for evaporating water and a control board 26 are provided.

  And as shown in FIG.6 and FIG.8, both panels 8 and 9 are predetermined distance (for example, about several cm) in the junction part of the two vacuum heat insulation panels 8 and 9 which adjoin the back surface part of the refrigerator main body 1. FIG. A separate separation portion 27 is provided. In the separation portion 27, connection means 28 is disposed so as to penetrate the inside and the outside of the refrigerator main body 1. In this case, as the connection means 28, an electrical wiring 29, a drainage path 30, and a refrigerant pipe 31 for connecting the refrigeration cycle are arranged. Further, as shown in FIG. 9, for example, urethane foam 32 is disposed in the separation portion 27 as foam heat insulating means.

  The electrical wiring 29 connects various electrical components (such as the fan device 16 and defrosting) inside the cabinet and the control board 26 outside the cabinet, and in the drawing, a pipe shape that covers a bundle of electrical wirings. The wiring cover is shown. The drainage path 30 is constituted by a drainage pipe connected to the bottom of the water receiver 19 in the warehouse, and this drainage pipe extends in the vertical direction outside the warehouse, and its lower end is inside the evaporating dish 25 outside the warehouse. It is arrange | positioned so that it may face. The defrost water in the water receiver 19 is sent to the evaporating dish 25 through the drainage path 30. The refrigerant pipe 31 of the refrigeration cycle is configured by joining a thin inlet connecting pipe 31a (see FIG. 7) connected to the inlet of the cooler 15 and a thick outlet connecting pipe 31b connected to the outlet of the cooler 15. ing. As shown in FIG. 7, the inlet connection pipe 31a and the outlet connection pipe 31b branch outside the warehouse, the outlet connection pipe 31b is connected to the input part of the compressor 22, and the inlet connection pipe 31a is a predetermined refrigeration cycle. It is connected to a component (not shown).

  As shown in FIG. 10, the refrigerant pipe 31 has a heat exchanging portion 33 formed by winding a refrigerant pipe having a length of about 3 m into an elongated coil shape. In the heat exchanging unit 33, heat exchange is performed between the high-temperature refrigerant flowing through the inlet connection pipe 31a and the low-temperature refrigerant flowing through the outlet connection pipe 31b. The heat exchanging unit 33 is disposed on the right side of the cooler 15 in the rear surface of the refrigerator main body 1.

  As shown in FIGS. 10 and 11, the heat exchange part 33 of the refrigerant pipe 31 is covered with a heat insulating material 34. As shown in FIGS. 13 and 14, the heat insulating material 34 is formed with a concave portion 33 a for accommodating the heat exchanging portion 33 and a concave portion 33 b for accommodating the electric wiring 29. The heat exchanging portion 33 and the electric wiring 29 is accommodated in the recesses 33 a and 33 b of the heat insulating material 34 and is covered with the heat insulating material 34. In other words, the connecting means 28 (the heat exchanging portion 33 and the electric wiring 29) is covered with the heat insulating material 34 inside the refrigerator main body 1. FIG. 12 is a longitudinal side view of the periphery of the heat insulating material 34.

  FIG. 15 is a longitudinal sectional view showing the drainage path 30 and the water receiving part 19 disposed in the separation part 27. As shown in FIG. 15, the drainage path 30 is led obliquely downward from the lower portion of the water receiving portion 19, inserted into the spacing portion 27, and covered with the urethane foam 32 disposed in the spacing portion 27. Yes.

  According to this embodiment of the above configuration, the box-shaped heat insulating wall 4 sandwiched between the inner box 3 and the outer box 2 is configured by combining two or more vacuum heat insulating panels 5 to 9, so that the vacuum heat insulating panel and Insulation performance can be increased compared to a configuration using urethane foam together. And the connection means arrange | positioned in the space | interval part 27 provided in the junction part of two adjacent vacuum heat insulation panels 8 and 9 so that the inside and the exterior of the refrigerator main body 1 may be penetrated, specifically, The electric wiring 29, the drainage path 30, and the refrigerant pipe 31 are arranged. Thereby, the refrigerator main body 1 which comprises the box-shaped heat insulation wall body 4 combining two or more vacuum heat insulation panels 5-9 can be implement | achieved comparatively easily.

  Moreover, in the said embodiment, since the urethane foam 32 was arrange | positioned in the space | interval part 27, the heat insulation performance of the space | interval part 27 part can be kept high enough. Furthermore, in the said embodiment, since it comprised so that the heat exchange part 33 of the refrigerant | coolant pipe 31 might be covered with the heat insulating material 34 in the store | warehouse | chamber of the refrigerator main body 1, the temperature of the heat exchange part 33 is high compared with the temperature in a store | warehouse | chamber. Even if it becomes, it can prevent that the heat | fever from the heat exchange part 33 leaks in a store | warehouse | chamber as much as possible.

  16 and 17 show a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment. In the second embodiment, the inner box 3 is provided with a protruding portion 36 that protrudes into the cabinet, and the heat exchanging portion 33 of the refrigerant pipe 31 and the electric wiring 29 (that is, connecting means) are disposed inside the protruding portion 36. The heat exchanging part 33 and the electric wiring 29 were arranged between the inner box 3 and the vacuum heat insulating panel 8. And it was comprised so that the convex part 36 of the inner box 3 might be covered with the heat insulating material 34. FIG.

  The configurations of the second embodiment other than those described above are the same as the configurations of the first embodiment. Therefore, in the second embodiment, substantially the same operational effects as in the first embodiment can be obtained.

  FIG. 18 shows a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same structure as 2nd Embodiment. In the third embodiment, as shown in FIG. 18, a convex portion 37 that is slightly larger than the convex portion 36 is provided in the inner box 3, and a heat insulating material 34 is provided between the inner surface of the convex portion 37 and the heat exchanging portion 33. Was configured to be disposed. The configuration of the third embodiment other than that described above is the same as the configuration of the second embodiment. Therefore, in the third embodiment, substantially the same operational effects as in the second embodiment can be obtained.

  FIG. 19 shows a fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment. In this 4th Embodiment, as shown in FIG. 19, the separation | spacing part 27 of the two vacuum heat insulation panels 8 and 9 arrange | positioned so that it may adjoin to the back part of the refrigerator main body 1 up and down is an upper vacuum heat insulation panel. 8 was disposed just below the water receiving portion 19 disposed along the front surface of FIG. And the drainage path 30 was arrange | positioned so that it might extend straight down from the bottom part of the water receiving part 19. FIG.

  The configurations of the fourth embodiment other than those described above are the same as the configurations of the first embodiment. Therefore, also in the fourth embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, according to the fourth embodiment, since the drainage path 30 is arranged so as to extend straight down from the bottom of the water receiving part 19, the defrost water flows more smoothly in the drainage path 30. Become. Moreover, the length dimension of the drainage path 30 can be shortened.

  FIG. 20 shows a fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same structure as 4th Embodiment. In the fifth embodiment, as shown in FIG. 20, the lower end portion of the vacuum heat insulation panel 8 is extended downward, and the drainage passage 30 is arranged along the front surface of the lower end portion of the extended vacuum heat insulation panel 8. . And the urethane foam 32 was arrange | positioned in the separation | spacing part 27 so that it might illustrate. The configuration of the fifth embodiment other than that described above is the same as the configuration of the fourth embodiment. Accordingly, in the fifth embodiment, substantially the same operational effects as in the fourth embodiment can be obtained. In particular, according to the fifth embodiment, the lower end portion of the vacuum heat insulation panel 8 is extended downward, the drainage passage 30 is arranged along the front surface of the extended portion, and the urethane foam 32 is arranged in the separation portion 27. Since it provided, the heat insulation performance of the space | interval part 27 part can be made still higher.

  21 to 23 show a sixth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment. In the sixth embodiment, instead of the vacuum heat insulation panel 9, as shown in FIG. 23, for example, a C-surface shape portion is formed as an inclined portion that is obliquely cut off at the corner portion on the joining side of the vacuum heat insulation panel 38. The vacuum heat insulation panel 38 formed with 38a was used. The C-surface shape portion 38a is a separation portion 39 as shown in FIG. And as shown in FIG. 22, the electrical wiring 29, the drainage path 30, and the refrigerant | coolant pipe 31 were arrange | positioned in this spacing part 39. As shown in FIG.

  In forming the C-shaped portion 38a on the vacuum heat insulating panel 38, it is preferable to form the C-shaped portion 38a by deforming the core material when compressing the core material of the vacuum heat insulating panel. Of course, the C-shaped portion 38a may be formed by other methods. Further, the area of the ear part 12a of the outer packaging material 12 of the vacuum heat insulating panel in the part where the C-surface shaped part 38a is formed is larger than the area of the ear part 12a in the other part. 12a is also bent and bonded along the slope of the C-shaped portion 38a.

  The configuration of the sixth embodiment other than that described above is the same as the configuration of the first embodiment. Therefore, in the sixth embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, in the sixth embodiment, the C-surface shape portion 38a of the vacuum heat insulating panel 38 is a separation portion 39, and the electrical wiring 29, the drainage path 30, and the refrigerant pipe 31 are disposed in the separation portion 39. Can be reduced, and the heat insulating performance of the joint portion of the vacuum heat insulating panels 8 and 38 can be further enhanced.

  FIG. 24 shows a seventh embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment. In the seventh embodiment, the box-shaped heat insulating wall 4 is configured by combining two vacuum heat insulating panels 40 and 41 as shown in FIG. The vacuum heat insulating panel 40 is a panel in which the cross-sectional shape is formed in a “U” shape, and the left and right side wall portions and the ceiling wall portion of the box-shaped heat insulating wall body 4 are integrated. The vacuum heat insulation panel 41 is a panel in which the back wall portion and the bottom wall portion of the box-shaped heat insulation wall body 4 are integrated by being bent at an obtuse angle at two locations.

  Of the vacuum heat insulation panel 41, the length corresponding to the lower part of the back wall portion of the box-shaped heat insulation wall 4 is formed so that the length in the left-right direction is shorter than the other parts. Thereby, when the box-shaped heat insulation wall body 4 is comprised by combining the two vacuum heat insulation panels 40 and 41, the separation part 42 is formed in the both sides of the lower part of the back wall part of the box-shaped heat insulation wall body 4. The An electrical wiring 29, a drainage path 30, and a refrigerant pipe 31 are disposed in the separation portion 42.

  The configurations of the seventh embodiment other than those described above are the same as the configurations of the first embodiment. Therefore, also in the seventh embodiment, substantially the same operational effects as in the first embodiment can be obtained. In particular, in the seventh embodiment, since the box-shaped heat insulating wall body 4 is configured by combining the two vacuum heat insulating panels 40 and 41, the number of joints is reduced, so that the heat insulating performance can be improved. In addition, since the number of parts is reduced, management of parts and the like are facilitated. In addition, the vacuum heat insulation panels 40 and 41 of each shape described above can be actually manufactured.

  Further, in each of the above-described embodiments, the heat exchanging portion 33 of the refrigerant pipe 31 as the connecting means is disposed inside the refrigerator main body 1, but instead, it is disposed outside the refrigerator (for example, the machine room). And may be configured to be covered with a heat insulating material.

  In the drawings, 1 is a refrigerator body, 2 is an outer box, 3 is an inner box, 4 is a box-shaped heat insulating wall body, 5, 6, 7, 8, 9 are vacuum heat insulating panels, 11 is a core material, 12 is an outer packaging material, 15 is a cooler, 16 is a fan device, 19 is a water receiving part, 21 is a machine room, 22 is a compressor, 23 is a radiator, 24 is a fan device, 25 is an evaporating dish, 26 is a control board, 27 is a separation part, 28 is connection means, 29 is electrical wiring, 30 is a drainage path, 31 is a refrigerant pipe, 32 is urethane foam (foam insulation means), 33 is a heat exchange part, 34 is a heat insulating material, 36 is a convex part, 37 is a convex part , 38 are vacuum heat insulation panels, 39 is a separation part, 40 and 41 are vacuum insulation panels, and 42 is a separation part.

Claims (5)

In a refrigerator comprising a refrigerator main body configured to sandwich a box-like heat insulation wall between an inner box and an outer box,
A vacuum heat insulation panel is disposed on the left side, right side, back and bottom of the box-shaped heat insulation wall ,
The left side vacuum insulation panel and the right side vacuum insulation panel are cut obliquely at a portion corresponding to the machine room,
The back vacuum insulation panel extends to the left and right corners of the inner box, and the left and right sides of the back vacuum insulation panel are close to the left side vacuum insulation panel and the right side vacuum insulation panel. Are arranged so that
The bottom vacuum insulation panel has a portion corresponding to the machine room bent inward,
A spacing portion is provided between the back vacuum insulation panel and the bottom vacuum insulation panel,
Connection means is introduced into the machine room through the spacing portion,
The connecting means has a refrigerant pipe and a drainage path,
The refrigerant pipe is wound in front of the back vacuum insulation panel,
The drainage channel extends in the vertical direction,
In the separation portion, the bottom surface vacuum heat insulation panel is in contact with the inner box, and the bottom surface vacuum heat insulation panel protrudes away from the outer box, and further, the bottom surface vacuum heat insulation panel and the rear surface vacuum heat insulation panel A refrigerator characterized in that foam insulation means is provided between the panels . In a refrigerator comprising a refrigerator main body configured to sandwich a box-like heat insulation wall between an inner box and an outer box,
A vacuum heat insulation panel is disposed on the left side, right side, back and bottom of the box-shaped heat insulation wall,
The left side vacuum insulation panel and the right side vacuum insulation panel are cut obliquely at a portion corresponding to the machine room,
The back vacuum insulation panel extends to the left and right corners of the inner box, and the left and right sides of the back vacuum insulation panel are close to the left side vacuum insulation panel and the right side vacuum insulation panel. Are arranged so that
The bottom vacuum insulation panel has a portion corresponding to the machine room bent inward,
A spacing portion is provided between the back vacuum insulation panel and the bottom vacuum insulation panel,
Connection means is introduced into the machine room through the spacing portion,
The connecting means has a refrigerant pipe and a drainage path,
The refrigerant pipe is wound in front of the back vacuum insulation panel,
The drainage channel extends in the vertical direction,
In the separation unit, a portion where the inner box of the rear vacuum insulation panel is separated, refrigerator characterized in that foam insulation means is provided between the bottom surface vacuum insulation panels. 3. The refrigerator according to claim 1 , wherein a thickness dimension in an inner and outer direction of the box-shaped heat insulating wall body is increased in the separation portion . The refrigerator according to any one of claims 1 to 3, wherein the connecting means includes electrical wiring . The refrigerator according to any one of claims 1 to 4, wherein the connecting means is covered with a heat insulating material inside or outside the refrigerator body .

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