WO2004074752A1

WO2004074752A1 - Refrigerator

Info

Publication number: WO2004074752A1
Application number: PCT/JP2003/001784
Authority: WO
Inventors: Shinichi Hashimoto; Akira Nakano; Masato Sasaki; Hidetomo Takanishi; Muneto Yamada
Original assignee: Matsushita Refrigeration Company
Priority date: 2003-02-19
Filing date: 2003-02-19
Publication date: 2004-09-02
Also published as: AU2003211529A1

Abstract

A refrigerator, wherein a through hole is provided in a vacuum insulator so that one sheet of vacuum insulator can be disposed near a drain pipe, whereby an energy saving effect can be increased since the covering ratio of the vacuum insulator to the surface area of an outer box is increased to reduce an endothermic load amount of an insulating box body and, since the vacuum insulator can be disposed without dividing, an increase in endothermic load amount of gas barrier film covering the vacuum insulator by heat bridge can be suppressed.

Description

Technical field

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

In recent years, in order to save energy and space in refrigerators, vacuum insulation materials with high thermal insulation have been used to enhance the insulation performance of refrigerators. Today, the demand for energy saving is increasing, and the heat insulation performance is improved by maximizing the use of vacuum heat insulating material, which has heat insulation performance several to 10 times that of rigid urethane foam, within an appropriate range. It is urgent to go. Japanese Unexamined Patent Publication No. Hei 6-159922 describes a conventional refrigerator in consideration of heat insulation performance using a vacuum heat insulating material.

FIG. 9 is a side sectional view of the refrigerator described in Japanese Patent Application Laid-Open No. 6-159922. The entire space consisting of the outer box 1 and the inner box 2 is covered with a moldable bag-shaped paper material 3, and the inside of the paper material 3 is filled with an inorganic porous filler 4, and is surrounded by the inner and outer boxes. A vacuum heat insulating material 5 is provided along the shape of the space. With this configuration, the vacuum insulation between the inner and outer boxes can be easily stored, and there is no need to close the gap between the inner and outer boxes and the vacuum insulation. Furthermore, since a heat-insulating box body can be composed only of the vacuum heat-insulating material without using rigid urethane foam, high heat-insulating performance can be secured.

In the above-mentioned conventional refrigerator, the vacuum insulation material 5 is used in the entire space formed by the outer box 1 and the inner box 2. For example, a through hole is required to pass through a drain pipe to discharge frost adhering to the cooler provided in the storage room to the outside of the refrigerator when defrosting.Vacuum insulation material for parts that require the through hole Is difficult to arrange. Therefore, the vacuum heat insulating material must be provided avoiding the through holes, and the coverage of the vacuum heat insulating material with respect to the surface area of the outer box is reduced, and the heat insulation of the refrigerator is significantly reduced. In addition, since only vacuum insulating material that has no adhesiveness compared to rigid urethane foam is used, the refrigerator attached to the outer box of the refrigerator by the adhesiveness of rigid urethane foam and a mechanical fixing method such as screws When mounting parts that apply weight to the entire refrigerator, such as the transport handle, the safety of transporting the refrigerator is significantly reduced.

In addition, since there is no inclusion such as rigid urethane foam between the outer case and the vacuum heat insulating material, for example, when fixing the hinge portion of the door body to the outer case with a screw or the like, the vacuum heat insulating material may break down under vacuum. , Vacuum new heat material cannot fulfill its original function. Disclosure of the invention

The refrigerator includes an outer box, an inner box provided in the outer box, a vacuum heat insulating material having a through hole, and a member passing through the through hole of the vacuum heat insulating material. The vacuum heat insulating material includes a core made of an inorganic fiber aggregate, and a gas barrier film that covers the core.

In such refrigerators, there is no need to divide the vacuum insulation material, and the coverage of the vacuum insulation material on the surface area of the outer box can be easily increased. The process of attaching the vacuum insulation material in the manufacturing process can be reduced, and the productivity of refrigerators can be improved. It is possible to suppress an increase in the amount of heat penetrated by the heat bridge of the gas barrier film covering the vacuum heat insulating material. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a front view of a refrigerator according to an embodiment of the present invention.

FIG. 2 is a rear view of the refrigerator according to the embodiment.

FIG. 3 is a side sectional view of the refrigerator according to the embodiment.

FIG. 4 is a top plan view of the refrigerator according to the embodiment.

FIG. 5 is a perspective view of a vacuum heat insulating material of the refrigerator according to the embodiment.

FIG. 6 is a side sectional view of the vacuum heat insulating material of the refrigerator according to the embodiment.

FIG. 7 is an enlarged sectional view of a main part of a through hole of a vacuum heat insulating material of the refrigerator according to the embodiment. FIG. 8 is an enlarged view of a main part of a through hole of a vacuum heat insulating material of the refrigerator according to the embodiment. FIG. 9 is a side sectional view of a conventional refrigerator. BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment)

1 to 8 show a refrigerator according to an embodiment of the present invention. Fig. 1 is a front view of the refrigerator, Fig. 2 is a rear view of the refrigerator, Fig. 3 is a sectional side view of the refrigerator, and Fig. 4 is a plan view of the top of the refrigerator. The refrigerator 20 includes a heat insulating box 21 including a refrigerator compartment door 22, a vegetable compartment door 23, and a freezer compartment door 24. In the heat insulating box 21, a hard urethane foam 27 and a vacuum heat insulating material 28 a, 2 are formed in a space formed by an inner box 25 made of a synthetic resin such as ABS and an outer box 26 made of a metal such as an iron plate. 8b, 28c, 28d and 28e are arranged in a multi-layer structure. The heat insulating box 21 is prepared by directly or indirectly bonding and fixing the vacuum heat insulating materials 28 a to 28 e directly or indirectly to the outer box 26 or the inner box 25, and then injecting the raw material of the hard urethane foam 27. It is manufactured by foaming it.

The heat-insulating box 21 is divided into rooms of each temperature zone, and comprises a refrigerator room 29, a vegetable room 30 and a freezer room 31. The freezer compartment 31 is set to a temperature in the freezing range of approximately 15 ° C to 125 ° C, and the refrigerator compartment 29 and the vegetable compartment 30 are set to a temperature in the refrigerated range of approximately 0 to 10 ° C. . The compressor 32, the condenser 33, and the cooler 34 constitute a cooling device. In other words, the refrigerator 20 is composed of the heat insulating box 21, the refrigerator compartment 29, the vegetable compartment 30 and the freezer compartment 31, the compressor 32 for cooling these rooms, the condenser 33, and the cooler 34. It is composed of a cooling device provided.

Vacuum insulation materials 28a, 28b, 28c, 28d, 28e are a core material 28f made of a sheet-like inorganic fiber aggregate and a gas barrier film covering the core material 28f. Consists of 28 g.

The core material 28 f is formed by laminating inorganic fibers such as glass wool, ceramic fiber, and rock wool into thin sheets, and is not limited to a single material but forms an aggregate. For this purpose, an organic or inorganic binder may be used.

Vacuum insulation material 28b on top of insulation box 21 is placed in contact with outer box 26 In addition, a through hole 37 is provided to avoid a screw 36 which is a stopper for fixing the hinge 35 holding the refrigerator compartment door 2 2. to the outer box 26. The through hole 37 of the vacuum insulation material 28 b is set larger than the screw 36 fixing opening.

The vacuum heat insulating material 28c at the back of the heat insulating box 21 is disposed so as to be in contact with the outer case 26, and the mounting opening 38a of the refrigerator carrying handle 38 and the hard urethane foam 27 A plurality of through holes 40 are provided corresponding to the raw material injection holes 39. The through hole 40 of the vacuum heat insulating material 28 c is set larger than the mounting opening 38 a of the refrigerator transport handle 38 and the raw material injection hole 39 of the rigid urethane foam 27. The vacuum heat insulating material 28a at the refrigerator compartment door 22 of the heat insulation box 21 is disposed so as to be in contact with the outer plate 41, and regulates the temperature of the storage room installed on the outer surface of the refrigerator compartment door 22. A through hole 43 is provided corresponding to the operation plate storage opening 42. The through hole 43 of the vacuum heat insulating material 28a is set to be larger than the operation plate storage opening 42.

FIG. 5 is a perspective view of the vacuum heat insulating material 28d. The vacuum heat insulating material 28d is disposed on the bottom and back of the heat insulating box 21 so as to be in contact with the inner box 25, and removes the frost that has formed on the evaporator 34 by means of the heater 14 4. A through-hole 46 is provided so as to pass a drain pipe 45 flowing out of the refrigerator. The through hole 46 is set to be larger than any of the inner box through hole and the outer box through hole through which the drain pipe 45 passes. The vacuum heat insulating material 28 d is formed by bending one heat insulating material and molding it to conform to the shape of the wall of the machine room in which the compressor 32 is housed.

FIG. 6 is a plan view of a partition wall 47 that insulates the vegetable room 30 and the freezing room 31. FIG. Vacuum insulation material 28 e is used for the water supply pipe 5 through which the water sent to the automatic ice maker 50 installed in the freezing room 31 by the pump 49 from the ice storage tank 48 installed in the refrigerator compartment 29 passes A through hole 52 through which 1 passes is provided. The through hole 52 is set so as to be larger than the through hole for passing the water supply pipe 51 of the partition wall 47.

FIG. 7 is an enlarged sectional view of a main part of a through hole of a vacuum heat insulating material, and FIG. 8 is an enlarged view of a main part of a through hole of a vacuum heat insulator. The end face of the core material 28 を forming the through holes 37, 40, 43, 46, 52 of the vacuum heat insulating materials 28 a to 28 e is chamfered 53. And The core material 28 8 is vacuum-sealed with 28 g of gas barrier film.

By providing the through hole 46 having the above configuration in the vacuum heat insulating material 28 d, it becomes possible to arrange the vacuum heat insulating material 28 d around the drain pipe 45 with a single sheet. Thereby, the coverage of the vacuum heat insulating material with respect to the surface area of the outer box 26 is improved, the heat absorption load of the heat insulating box 21 can be reduced, and the energy saving effect can be enhanced.

Since the core material 28 f of the vacuum heat insulating material 28 d is made of a thin sheet-like material as the core material, the shape can be easily processed, so that through holes and notches can be easily processed. Therefore, it is possible to easily produce a vacuum heat insulating material suitable for the required part of heat insulation and apply it to the heat insulating box, so that the coverage of the heat insulating box with the vacuum heat insulating material can be more effectively increased. . '

In this embodiment, the core material 28 f of the vacuum heat insulating material is formed of a sheet-like inorganic fiber aggregate. Through holes and other shapes can be processed more easily than vacuum insulation materials that use inorganic powder polyurethane foam as the core material, and long-term reliability is improved because there is less gas generation over time in the vacuum insulation materials. Thus, a similar effect can be obtained.

The vacuum heat insulating material 28 d according to the present embodiment can be disposed without being divided, and an increase in the heat absorption load due to the heat bridge of the gas barrier film 28 g covering the vacuum heat insulating material 28 d can be suppressed. Can be.

In addition, the integral vacuum heat insulating material 28d provided around the drain pipe can prevent the strength of the refrigerator 20 from decreasing. In addition, since the number of the vacuum heat insulating materials 28d to be bonded can be reduced, a decrease in productivity due to the vacuum heat insulating material 28d to be bonded can be suppressed.

Furthermore, since the through hole 46 of the vacuum insulation material 28 d is set larger than both the through hole of the inner box and the through hole of the outer box through which the drainage pipe 45 passes, the vacuum insulation material 28 Even if d is placed at a position slightly deviated from the designated position, when the drainage pipe 45 is installed in the refrigerator manufacturing process, vacuum insulation breaks due to deformation or breakage due to contact with the vacuum insulation material 28 d. Can be prevented. In other words, high accuracy is not required when arranging the vacuum heat insulating material 28d, and productivity can be improved. Therefore, even when the vacuum insulation material 28 d is provided by using an automatic machine or the like, high-precision positioning is not required, so that capital investment can be suppressed.

Vacuum insulation material 28 d with through-holes 46 is formed by bending one piece of insulation material to match the wall shape of the machine room containing compressor 32, so that the through-holes and complicated wall shape can be It can be composed of one vacuum insulation material. Therefore, even in the case of a three-dimensional wall surface requiring a through hole, the vacuum heat insulating material of the present embodiment can enhance the effect of suppressing the increase in the amount of heat entering by the heat bridge of the gas barrier film that covers the wall surface. In addition, a partition wall 47 provided with a vacuum heat insulating material 28 e having a through hole 52 is provided with an ice making water tank 48 installed in a freezing room 31 from an ice making water supply tank 48 installed in a refrigerator room 29. Since it is possible to arrange the “water supply to water 0” pipe 51, the refrigerator according to the embodiment can be equipped with an automatic ice maker, and the commercial value can be increased. In addition, since a vacuum heat insulating material can be provided around the water supply pipe 51, for example, to prevent freezing due to cooling from the freezing room 31 (freezing of the water supply pipe provided in the water supply pipe 51). It is possible to abolish the preventive operation all day long, thereby reducing costs, improving productivity and suppressing power consumption.

Further, since the vacuum heat insulating material 28 e can be arranged on the entire surface of the partition wall 47, the partition wall 47 can be made thinner, and the internal volume of the refrigerator can be increased.

Further, the through hole 52 of the vacuum heat insulating material 28 e is set to be larger than the through hole for passing the water supply pipe 51 of the partition wall 47. Therefore, even if the vacuum heat insulating material 28 e is disposed at a position slightly deviated from the designated position, deformation due to contact of the vacuum heat insulating material 28 e when the water supply pipe 51 is incorporated in the refrigerator manufacturing process is reduced. Vacuum insulation material 28 e can be prevented from being destroyed due to damage, and the vacuum insulation material 28 e can close part of the through hole in the partition wall 47, preventing the water pipe 51 from being incorporated and the water pipe 51 If the tip of the ice shifts from the specified position, the water supply will fail and the size of the ice will vary. Ice formation due to woodpeckers and splashes of water can be prevented.

In addition, a plurality of through holes 40 are provided in one piece of vacuum heat insulating material 28 c, arranged so as to be in contact with the outer box 26, and correspond to the holes 39 into which the raw material of the rigid urethane foam 27 is injected. By arranging the through holes 40 in alignment, the coverage of the vacuum box with the surface area of the outer box is improved, and the heat insulating effect can be enhanced. This makes it possible to secure an injection path for the raw material compound of the rigid urethane foam 27, and the rigid urethane foam 27 is formed between the outer box 26 or the inner box 25 and the vacuum heat insulating material 28c. Space can be reliably filled, and a urethane layer can be formed uniformly.

Since the vacuum heat insulating material 28c can be disposed without being divided, an increase in the heat absorption load due to the heat bridge of the gas barrier film covering the vacuum heat insulating material 28c can be suppressed. Therefore, since the effect of the heat insulation performance is not reduced, the energy saving effect can be enhanced and the strength of the refrigerator can be maintained.

The through hole 40 of the vacuum heat insulating material 28 c is set larger than the raw material injection hole 39 of the hard urethane foam 27. Therefore, even if the position of the vacuum heat insulating material 28c slightly deviates from the designated position during the assembly of the refrigerator, the vacuum heat insulating material 28c blocks one of the routes for injecting the raw material compound of the hard urethane foam 27. do not do. As a result, the raw material compound of the rigid urethane foam 27 scatters outside the outer box 26, and the refrigerator can be stably produced without causing a decrease in the function or productivity of the urethane foam jig or peripheral equipment. . In addition, it is possible to prevent the heat insulating box 21 from being discarded due to insufficient filling of the raw urethane foam 27 with the raw material compound and adhesion to the outer box 26. In addition, when the raw material compound of the hard plastic foam 27 is injected, deformation of the vacuum insulating material 28c at the tip of the injector and contact of the vacuum insulating material 28c can prevent the breaking of the vacuum state due to breakage. A through hole 4 3 is formed in the vacuum heat insulating material 28 a, and the opening 42 for accommodating the storage room temperature controller 32 provided on the outer surface of the refrigerator compartment door 22 is aligned with the projection surface 42 in the projection plane direction. It is located at the location. Thereby, the storage room temperature control section can be installed on the outer surface of the refrigerator compartment door 22. Therefore, it is possible to adjust the temperature inside the refrigerator without opening the refrigerator compartment door 22. In addition, the refrigerating room 29 can suppress the temperature rise, and can stably store the food for a long time without reducing the freshness of the stored food. As a result, the temperature inside the refrigerator can be adjusted without opening the refrigerator compartment door 22, so that a reduction in the product value due to a decrease in usability can be prevented. Further, the coverage of the outer surface of the refrigerator compartment door 22 with the vacuum heat insulating material is improved, and the heat insulating effect can be enhanced. In addition, since a vacuum insulation material can be attached to the door surface, the door can be made thinner, and the depth of the refrigerator can be made thinner, thereby increasing the commercial value. Further, the through hole 43 of the vacuum heat insulating material 28a is configured to be larger than the opening 42 for storing the temperature control section of the storage room provided on the outer surface of the refrigerator compartment door 22. As a result, even when the position of the vacuum heat insulating material 28a slightly deviates from the specified position in the refrigerator manufacturing process, a part of the opening 4 is closed and the storage room temperature control unit cannot be installed. However, it is possible to prevent distortion and floating of the storage room temperature control section due to the projection of the vacuum heat insulating material 28a into the opening 42. Therefore, it is possible to increase the productivity of the refrigerator and to prevent a decrease in appearance quality.

A through hole 37 is provided in the vacuum insulation material 28 b at a position aligned with the opening through which the screw 36 fixing the hinge 35 holding the refrigerator door 22 in the refrigerator box 26 passes. Is done. As a result, the refrigerator compartment door 22 is securely fixed with the screw 36. Further, the rigid urethane foam 27 itself has adhesiveness. Therefore, even when the door 22 is repeatedly opened and closed with a considerable amount of food stored in the food storage unit inside the refrigerator compartment door 22 and a considerable load is applied to the refrigerator compartment door 22, the refrigerator compartment door 2 2 can be prevented, and the appearance quality can be maintained.

In addition, since the vacuum insulation material can be attached to the top surface, the wall thickness of the top surface can be reduced, and the height of the refrigerator can be reduced, increasing the product value. it can.

Further, the through hole 37 of the vacuum insulating material 28 is set to be larger than the opening through which the screw 36 for fixing the hinge 35 for holding the refrigerator compartment door 22 in the refrigerator outer box 26 passes. As a result, the position of the vacuum insulation material 28 TD was specified in the refrigerator manufacturing process. Even if it is misaligned, the vacuum insulation material 28b during screw tightening may be destroyed due to the opening being closed, and the screw 36 may be distorted or lifted due to the projection of the vacuum insulation material 28b into the opening. Of the refrigerator compartment 22 can be prevented from being paralleled, and the appearance of the refrigerator can be prevented from deteriorating.

The vacuum heat insulating material 28 c on the back of the heat insulating box 21 is disposed so as to be in contact with the outer box 26 and has a through hole 40 corresponding to the mounting opening 38 at of the refrigerator carrying handle 38 at. A part of the refrigerator transport handle 38 is buried in the rigid urethane foam 27. Since the rigid urethane foam 27 itself has adhesiveness, even if the fixing means such as screws are reduced in the refrigerator carrying handle 38, which requires considerable weight, safety during transportation of the refrigerator can be secured. I can do it. Further, since the above fixing means can be reduced, the productivity of the refrigerator can be improved.

The through hole 40 of the vacuum heat insulating material 28 c is set to be larger than the opening for disposing the refrigerator carrying handle 38 on the refrigerator outer box 26. As a result, even if the vacuum insulation material 28 c is moved away from the designated position in the refrigerator manufacturing process, the refrigerator carrying handle 38 cannot be attached and the vacuum insulation material 28 c protrudes into the opening. It is possible to prevent a load from dropping due to distortion or lifting of the refrigerator carrying handle 38. Therefore, it is possible to improve the productivity of the refrigerator and ensure safety.

In the vacuum insulation materials 28a to 28e, the end surfaces around the through holes 37, 40, 43, 46, 52 of the core material 28 mm are chamfered 53, and the outer peripheral surface thereof. Is vacuum-sealed with 28 g of gas barrier film. The gas barrier film 28 g can be sealed at the end face around the through hole, and the reliability of the vacuum heat insulating materials 28 a to 28 e is improved. With one vacuum heat insulator having a plurality of necessary through holes, the amount of heat entering through the heat bridge of 28 g of the gas barrier film covering the vacuum heat insulator can be suppressed. The plurality of through holes may be formed for the same application or different applications. By arranging the integral vacuum heat insulating material around the through-hole, it is possible to suppress a decrease in the strength of the refrigerator. Further, since the number of vacuum insulation materials to be attached can be reduced, the productivity of the refrigerator can be improved. The through holes 37, 40, 43, 46, 52 of the vacuum heat insulating materials 28a to 28e may be cut out at the ends of the vacuum heat insulating material. Accordingly, a vacuum heat insulating material having an appropriate shape can be provided according to the components provided between the outer box and the inner box of the refrigerator, and the coverage of the vacuum heat insulating material can be easily increased.

In the present embodiment, the core material 28 f of the vacuum heat insulating material is formed of a sheet-like inorganic fiber aggregate. Even though the core material 28 f is formed of a normal inorganic fiber aggregate that is not processed into a sheet shape, it has a shape such as a through hole compared to a conventional vacuum heat insulating material using inorganic powder or urethane foam as a core material. It can be easily processed, and almost the same effects can be obtained, as long-term reliability is improved because gas generation over time in the vacuum insulation material is small. Industrial applicability

In the refrigerator according to the present invention, there is no need to divide the vacuum heat insulating material, and the coverage of the vacuum heat insulating material with respect to the surface area of the outer box can be easily increased. The process of attaching the vacuum insulation material in the manufacturing process can be reduced, and the productivity of refrigerators can be improved. It is possible to suppress an increase in the amount of invading heat due to the heat bridge of the gas barrier film covering the vacuum heat insulating material.

Claims

The scope of the claims

1. Outer box and

An inner box provided in the outer box,

A vacuum heat insulating material having a through-hole, provided between the outer box and the inner box, comprising: a core member made of an inorganic fiber aggregate; and a gas barrier film covering the core member.

A member that passes through the through hole of the vacuum heat insulating material,

Refrigerator.

2. an evaporator provided in the inner box;

And a pipe for discharging water discharged from the evaporator to the outside of the refrigerator,

The inner box and the outer box are formed with a through hole through which the pipe passes,

The refrigerator according to claim 1, wherein the member passing through the through hole of the vacuum heat insulating material includes the pipe.

3. The refrigerator according to claim 2, wherein the through hole of the vacuum heat insulating material is larger than each of the through holes of the inner box and the outer box.

4. A freezing room and a refrigerator room provided in the inner box,

A partition wall for partitioning the freezer compartment and the refrigerator compartment, formed of the inner box, having the vacuum heat insulating material therein, and having a through hole;

A storage reservoir provided in the refrigerator compartment;

An ice machine provided in the freezer compartment,

A water supply path provided between the water storage tank and the ice making machine, the water supply path passing through the through hole of the partition wall;

The member passing through the through hole of the vacuum heat insulating material includes the water supply path. The refrigerator according to claim 1.

5. The refrigerator according to claim 4, wherein the through hole of the vacuum heat insulating material is larger than the through hole of the partition wall.

6. The refrigerator according to claim 1, further comprising a rigid urethane foam provided between the outer box and the inner box.

7. At least one of the outer box and the inner box is formed with an injection hole for injecting the raw material of the rigid polyurethane foam between the outer box and the inner box.

7. The refrigerator according to claim 6, wherein the member passing through the through hole of the vacuum heat insulating material is the raw material of the rigid urethane foam.

8. The refrigerator according to claim 7, wherein the injection hole is formed in the outer box.

9. The refrigerator according to claim 8, wherein the outer box includes a back panel on which the injection hole is formed.

10. The refrigerator according to claim 7, wherein the through hole of the vacuum heat insulating material is larger than the injection hole.

11. The outer box has an opening, and further includes an operation unit provided in the opening, for adjusting a temperature in the inner box,

The refrigerator according to claim 1, wherein the member passing through the through hole of the vacuum heat insulating material includes the operation unit.

1 2. A door formed of the outer box and the inner box and provided with the operation unit is further provided. The refrigerator according to claim 11, wherein:

13. The refrigerator according to claim 11, wherein the through hole of the vacuum heat insulating material is larger than the opening of the outer box.

1 4. The outer box and the inner box have a first opening, and a door provided in the first opening;

A hinge portion having a second opening, and holding the door in the outer box;

A stopper that passes through the second opening to fix the hinge portion to the outer box, wherein the member that passes through the through hole of the vacuum heat insulating material includes the stopper. The refrigerator according to item 1.

15. The refrigerator according to claim 14, wherein the through hole of the vacuum heat insulating material is larger than the second opening.

16. An opening is formed in the outer box, and a refrigerator carrying handle provided in the opening of the outer box is further provided.

The refrigerator according to claim 1, wherein the member passing through the through hole of the vacuum heat insulating material includes the handle.

17. The refrigerator according to claim 16, wherein the through-hole of the vacuum heat insulating material is larger than the opening of the outer box.

18. The refrigerator according to claim 1, wherein the core material is chamfered around the through hole of the vacuum heat insulating material.

1 9. The shape of the vacuum heat insulating material is less than the shape of the outer box and the shape of the inner box. The refrigerator according to claim 1, wherein the refrigerator is formed in accordance with one of the spiders.

20. The refrigerator according to claim 1, wherein the vacuum heat insulating material has another through-hole formed therein, and further includes another member passing through the another through-hole.

21. The refrigerator according to claim 1, wherein the inorganic fiber aggregate of the core material is in a sheet shape.