WO2019208457A1

WO2019208457A1 - Refrigerator

Info

Publication number: WO2019208457A1
Application number: PCT/JP2019/016913
Authority: WO
Inventors: 克彦西澤; 美桃子井下; 愼一堀井
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2018-04-26
Filing date: 2019-04-22
Publication date: 2019-10-31

Abstract

This refrigerator is provided with a main refrigerator body, and a door (15a) that opens/closes a front opening part of the main refrigerator body. The door (15a) comprises: an inner panel (31); an outer panel (32); a thermal insulation material (36) arranged between the inner panel (31) and the outer panel (32); and a gasket (22) that is attached to the outer panel (31) and that, by being in contact with a peripheral edge of the front opening part, seals off the front opening part. The inner panel (31) comprises an embankment section (31b) that faces the front opening part and protrudes out toward the inside of the refrigerator. A recessed section (31d) and/or a through hole section (31e) is disposed in the embankment section (31b) of the inner panel (31).

Description

refrigerator

This disclosure relates to refrigerators, and particularly to the refrigerator compartment door.

Conventionally, in order to save energy by improving heat insulation performance, the refrigerator has a box body serving as a refrigerator main body and a heat insulating door that closes the front opening, and a vacuum heat insulating material between the refrigerator main body and the heat insulating door. The heat insulation performance in the vicinity of is improved.

Also, the conventional refrigerator has a refrigerator door composed of an inner plate, an outer plate, a heat insulating material accommodated between the inner plate and the outer plate, and a gasket. The gasket has a shape to be inserted into a gasket mounting portion having an insertion receiving shape provided on the inner plate. And a gasket is inserted and fixed to a gasket attachment part (for example, refer to patent documents 1).

However, in the refrigerator described in Patent Document 1, the gasket mounting portion is cooled by heat conduction when the inner plate is cooled by the cool air in the cabinet. For this reason, when the surface temperature of the gasket is lowered, the gasket is condensed. In addition, the energy saving performance deteriorates due to heat exchange between the gasket and the outside of the cabinet.

JP 2017-62110 A Japanese Patent No. 5310928

This disclosure provides a refrigerator that improves the quality by preventing the door from condensing and improving the energy saving performance by suppressing heat exchange between the gasket and the outside of the cabinet.

A refrigerator according to the present disclosure includes a refrigerator body and a door that opens and closes a front opening of the refrigerator body, and the door is an insulating plate disposed between an inner plate, an outer plate, and the inner plate and the outer plate. And a gasket that is attached to the inner plate and seals the front opening by contacting the peripheral edge of the front opening, and the inner plate faces the front opening and protrudes toward the inner side A bank portion is provided, and at least one of the first recessed portion and the through hole portion is disposed on the bank portion of the inner plate.

FIG. 1 is a front view of the refrigerator according to the first embodiment of the present disclosure. FIG. 2 is a perspective view of the refrigerator door in the first embodiment. FIG. 3 is a cross-sectional view of the refrigerator door in the first embodiment when viewed from the right side. 4 is an enlarged view of a main part of the sectional view of the door of the refrigerator shown in FIG. FIG. 5 is a cross-sectional view of the refrigerator door according to the second embodiment of the present disclosure as viewed from the right side. FIG. 6 is an enlarged view of a main part of the cross-sectional view of the refrigerator door shown in FIG. 5.

A refrigerator according to an aspect of the present disclosure includes a refrigerator body and a door that opens and closes a front opening of the refrigerator body, and the door is disposed between an inner plate, an outer plate, and the inner plate and the outer plate. And a gasket that is attached to the inner plate and seals the front opening by contacting the peripheral edge of the front opening, and the inner plate faces the front opening, A bank portion projecting toward the wall, and at least one of the first dent portion and the through hole portion is disposed on the bank portion of the inner plate.

Such a configuration can prevent the cool air in the storage chamber from conducting heat to the gasket through the inner plate and prevent condensation due to a decrease in the surface temperature of the gasket.

In the refrigerator according to another aspect of the present disclosure, the inner plate has a gasket mounting portion to which a gasket is attached, and the second dent portion may be disposed in a portion located on the outer side of the gasket mounting portion.

Such a configuration can further suppress heat conduction in the inner plate.

The refrigerator according to yet another aspect of the present disclosure may be configured such that the thickness of the inner plate in the second recess is smaller than the thickness of the inner portion of the gasket mounting portion.

Such a configuration can improve the reliability against condensation and further improve the energy saving performance.

In the refrigerator according to yet another aspect of the present disclosure, the heat insulating material may be a vacuum heat insulating material. And the part located in the store | warehouse | chamber interior of a gasket attachment part and a vacuum heat insulating body may adhere | attach, and space may be arrange | positioned between the part located in the warehouse exterior of a gasket attachment part, and a vacuum heat insulator.

With such a configuration, in the gasket mounting portion, it is possible to reduce the range in which the vacuum heat insulator and the inner plate are in contact with each other, thereby suppressing heat conduction. Therefore, it is possible to suppress the cooling of the gasket and improve the reliability to dew condensation.

In the refrigerator according to still another aspect of the present disclosure, the door may have a door cap on a side surface parallel to the thickness direction of the door, and the door cap and the vacuum heat insulating body may be bonded.

Such a configuration improves the strength of the entire door and ensures the durability of the door.

In the refrigerator according to yet another aspect of the present disclosure, the vacuum heat insulator includes a core material, a storage unit that stores the core material, and a sealing member that seals an opening of the storage unit. The portion may face the inner plate, and the sealing member may face the outer plate and be covered with the outer plate.

With such a configuration, it is possible to maintain the vacuum in the heat insulating material while ensuring the degree of freedom of the shape of the heat insulating material. Accordingly, the entire interior of the door can be configured with a vacuum insulator, and the energy saving performance of the refrigerator is improved.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited by the embodiment.

(Embodiment 1)
[1. overall structure]
FIG. 1 is a diagram illustrating the entire refrigerator and the components.

As shown in FIG. 1, the refrigerator 100 includes a refrigerator main body 11 formed of a box body having heat insulation properties. The refrigerator main body 11 is mainly composed of an outer box made of a steel plate, an inner box formed of a resin such as ABS resin, and a heat insulating material injected between the outer box and the inner box.

The refrigerator main body 11 has a plurality of storage rooms insulated by partition plates. A refrigerator compartment 12 is disposed at the top of the refrigerator 100. In addition, an ice making room 13 and a switching room 14 are arranged side by side in the lower part of the refrigerator compartment 12, and a freezing room 15 is arranged in the lower part of the ice making room 13 and the switching room 14. In addition, a vegetable room 16 is disposed at the bottom of the refrigerator 100. In front of each of the storage rooms,

doors

12a, 13a, 14a, 15a, and 16a having heat insulation properties are provided for partitioning the interior from the outside air. These doors are arranged in front of the front opening of the refrigerator main body 11.

A machine room is arranged in the rear area at the top of the refrigerator compartment 12. In the machine room, components constituting the refrigeration cycle such as a compressor and a dryer for removing moisture are housed.

Further, a cooling chamber that generates cold air is disposed behind the freezing chamber 15. A cooler and a cooling fan are arranged in the cooling chamber. The cooling fan blows cold air generated by being cooled by the cooler to the refrigerator compartment 12, the ice making chamber 13, the switching chamber 14, the vegetable compartment 16, and the freezer compartment 15. Further, an air volume adjustment damper for adjusting the air volume of the cool air from the cooling fan is disposed in the cooling air passage. Further, a radiant heater, a drain pan, a drain tube evaporating dish, and the like are provided in order to defrost frost and ice adhering to the cooler and the periphery of the cooler.

The temperature of the refrigerator compartment 12 is set as a lower limit of the temperature at which the stored product is not frozen in order to store the stored product in a refrigerator, and is usually 1 ° C. to 5 ° C. Further, the temperature of the lowermost vegetable room 16 is set to a temperature equal to or slightly higher than the temperature of the refrigerated room 12, and is usually 2 ° C to 7 ° C. Furthermore, the temperature of the freezer compartment 15 is set to a freezing temperature zone, and is usually −22 ° C. to −15 ° C. in order to store the stored product in a frozen state. However, the temperature of the freezer compartment 15 may be set to a low temperature such as minus 30 ° C. or minus 25 ° C., for example, in order to improve the frozen preservation state of the stored product.

In the upper part of the ice making chamber 13, an automatic ice making machine is arranged. The automatic ice making machine generates ice with water sent from a water storage tank in the refrigerator compartment 12. The generated ice is stored in an ice storage container disposed in the lower part of the ice making chamber 13.

The switching chamber 14 is configured so that the temperature in the switching chamber 14 can be switched between a plurality of temperature zones. The multiple temperature zones include, for example, a refrigeration temperature zone set at 1 ° C. to 5 ° C., a vegetable temperature zone set at 2 ° C. to 7 ° C., and a freezing temperature usually set at −22 ° C. to −15 ° C. In addition to the temperature zone, a temperature zone preset by a temperature between the refrigeration temperature zone and the freezing temperature zone is included.

The switching room 14 is arranged in parallel with the ice making room 13. The switching chamber 14 is a storage chamber provided with a door independently. The door 14a of the switching chamber 14 is often configured as a pull-out door.

In the present embodiment, the switching chamber 14 is a storage chamber that can be switched between a plurality of temperature zones including a refrigeration temperature zone and a refrigeration temperature zone, but the switchable temperature zone is limited to the combination described above. I can't. For example, the storage function in the refrigeration temperature zone may be left to the refrigeration room 12 and the vegetable room 16, and the storage function may be left to the freezer room 15 in the freezing temperature zone. Then, the switching chamber 14 may be configured as a storage chamber specialized for switching only in an intermediate temperature zone between the refrigeration temperature zone and the freezing temperature zone. The switching chamber 14 may be a storage chamber whose temperature is fixed in a specific temperature range. For example, with the recent increase in demand for frozen food, the switching chamber 14 may be configured as a storage chamber fixed for freezing.

[2. Configuration of refrigerator door]
Next, the structure of the refrigerator door will be described taking the door 15a of the freezer compartment 15 as an example. In addition, the refrigerator door of this indication is not restricted to the door 15a of the freezer compartment 15, In any of the door 12a of the refrigerator compartment 12, the door 13a of the ice making room 13, the door 14a of the switching room 14, and the door 16a of the vegetable compartment 16 May be applied.

FIG. 2 is a perspective view of the refrigerator door in the present embodiment. FIG. 3 is a sectional view of the refrigerator door in the present embodiment as viewed from the right side.

As shown in FIG. 2, the door (freezer compartment door) 15 a of the freezer compartment 15 slides between the heat insulating door casing 21, the gasket 22, and the rails arranged on the side walls of the freezer compartment 15. Have The door 15a is arrange | positioned at the front-surface opening part of the refrigerator main body 11, and is comprised so that it can pull out in the front-back direction. The heat insulating door casing 21 has an inner plate 31 and an outer plate 32. The outer surface of the outer plate 32 constitutes the outer surface of the heat insulating door casing 21. The outer surface of the heat insulating door casing 21 is a portion that is always exposed to the outside of the refrigerator body 11.

As shown in FIG. 3, the inner plate 31 includes a substantially flat portion 31a that is a portion facing the front opening of the freezer compartment 15 (see FIG. 1), a bank portion 31b disposed on the outer periphery of the substantially flat portion 31a, and A gasket mounting portion 31c into which the gasket 22 is press-fitted is integrally formed. In the present embodiment, the inner plate 31 is made of resin.

The bank portion 31b of the inner plate 31 is opposed to the front opening and protrudes toward the inside of the freezer compartment 15 (inner side). The bank portion 31b enters the freezer compartment 15 when the door 15a is closed, so that the throat portion that is a gap between the bank portion 31b and the partition wall 33 (see FIG. 4 described later) that partitions the freezer compartment 15 is provided. 55 (see FIG. 4 described later). In the present embodiment, the bank portion 31b is arranged so that the width of the throat portion 55 is narrowed.

The inner plate 31 is made of resin as described above, and is formed by injection molding. Inside the inner plate 31, a vacuum heat insulating member 36 to be described later, which is molded corresponding to the inner surface shape of the inner plate 31, that is, the uneven shape of the substantially flat surface portion 31 a and the bank portion 31 b is accommodated.

Between the outer plate 32 that forms the outer surface of the door 15a and the inner plate 31, a vacuum heat insulator 36 is disposed as a heat insulating material. The vacuum heat insulator 36 includes a core material 36a, a storage case 36b that stores the core material 36a, and a sealing member 36c that seals an opening of the storage case 36b. In the present embodiment, the storage case 36b is formed of a multilayer soft material. Further, the storage case 36b sealed by the sealing member 36c is sealed in a state where the inside is decompressed.

The sealing member 36c is a rectangular film and is configured to seal the opening of the storage case 36b. As the sealing member 36c, for example, a laminate film such as a thermoplastic resin may be used. Moreover, the laminate film may have a metal layer such as aluminum or stainless steel.

The storage case 36b is formed in accordance with the inner surface shape of the inner plate 31, that is, the uneven shape such as the substantially flat surface portion 31a, the bank portion 31b, and the gasket mounting portion 31c. The storage case 36b is a molded product produced by a technique such as vacuum molding, injection molding, pressure molding, or press molding. The storage case 36b is formed of a multilayer sheet in which a plurality of layers of a material softer than the ABS resin that is the material of the inner plate 31 (for example, a soft material such as ethylene-vinyl alcohol copolymer resin) is stacked. Thereby, the storage case 36 b can be matched with the inner surface of the inner plate 31 when stored in the inner plate 31.

The storage case 36b is configured in a concave shape having an opening, and stores the core material 36a in the internal space. The storage case 36b opens toward the front side shown in FIG. 3, and is recessed toward the rear side.

The core material 36a is made of open-cell urethane foam, glass fiber, rock wool, alumina fiber, polyethylene terephthalate fiber, or the like. The open cell urethane foam may have, for example, the characteristics disclosed in Patent Document 2. The core material 36a has an adsorbent (not shown) inside. Examples of the adsorbent include a moisture adsorbent that adsorbs and removes moisture, and a gas adsorbent that adsorbs a gas such as atmospheric gas. The adsorbent is fitted inside the core member 36a. In a state where the adsorbent is fitted to the core material 36a, the core material 36a and the adsorbent are formed in substantially the same shape as the shape of the inner surface (internal space) of the storage case 36b.

The storage case 36 b of the vacuum heat insulator 36 is disposed so as to be attached to the inner surface of the inner plate 31.

The door 15a has a door cap 34 on a side surface parallel to the thickness direction of the door 15a (front-rear direction in FIG. 3), and the door cap 34 constitutes the outer periphery of the door 15a. And the door cap 34 is arrange | positioned so as to oppose the side part 36ba which is an outer peripheral surface of the storage case 36b. The door cap 34 and the storage case 36b of the vacuum heat insulator 36 are bonded and fixed.

The outer plate 32 of the heat insulating door casing 21 has a rectangular flat plate shape and is made of a glass plate or the like. The outer plate 32, the sealing member 36c of the vacuum heat insulator 36, and the door cap 34 are bonded with an adhesive or a double-sided tape. Thereby, the outer plate 32 is fixed.

FIG. 4 is an enlarged view of a main part of the sectional view of the refrigerator door shown in FIG.

As shown in FIG. 4, a throat portion 55 (gap) is formed between the bank portion 31 b of the inner plate 31 and the partition wall 33. Thereby, it is avoided that the cool air which goes to the door 15a from the inside of the freezer compartment 15 hits the gasket attachment part 31c directly. That is, the throat portion 55 suppresses the gasket 22 from being cooled by cold air.

Further, a cold air sealing member 54 is attached to the partition wall 33 that partitions the freezer compartment 15 and the vegetable compartment 16 (see FIG. 1) below the freezer compartment 15. Thereby, the invasion of cold air into the throat portion 55 is suppressed. Therefore, the cold air toward the gasket attachment portion 31c is more effectively shielded. The cold seal member 54 may be made of, for example, rectangular foamed polyethylene. And the cool air sealing member 54 may make the clearance gap of the throat part 55 small, and may suppress the flow of cold air. Alternatively, a soft material such as vinyl chloride may be used as the cold air sealing member 54, and the cold air may be shielded by bringing the cold air sealing member 54 into contact with the bank portion 31b.

With such a configuration, first, the cold air is shielded by the cold air sealing member 54 and the throat portion 55 provided on the partition wall 33 (first seal). Further, the cold air is sealed by the gasket 22 so as not to leak out of the cabinet (second seal).

In the present embodiment, a recessed portion 31d is disposed on the bank portion 31b of the inner plate 31. As shown in FIG. 4, the recessed portion 31 d is disposed in a portion of the bank portion 31 b that faces the partition wall 33 and constitutes the throat portion 55. The plate thickness of the inner plate 31 in the recessed portion 31d is smaller than the plate thickness of the inner plate 31 in the substantially flat portion 31a and is thin. The recessed portion 31d may be configured without reducing the thickness of the inner plate 31. That is, it may be configured such that the back side of the recessed portion 31d rises corresponding to the recessed portion 31d.

Further, in the present embodiment, the recessed portion 31 d is disposed so as to face the cold air sealing member 54 disposed on the upper surface of the partition wall 33. And the recessed part 31d is comprised so that it may dent upward from the lower surface of the bank part 31b. Therefore, it is possible to suppress the cool air in the freezer compartment 15 from entering the throat portion 55 and to suppress the heat conduction from the inner plate 31 to the gasket 22. Thereby, it can prevent that the surface temperature of the gasket 22 falls and dew condensation occurs.

In addition, when the recessed part 31d is comprised by thinning the inner plate 31, the thin resin moldability and the intensity | strength of the inner plate 31 are considered, and the recessed part 31d has the plate | board thickness in the recessed part 31d, an inner plate. You may be comprised so that it may become 1/3 to 1/2 of the basic thickness of the substantially flat part 31a of 31.

In addition, it is more preferable that the dents are arranged at a plurality of locations. For example, as shown in FIG. 4, the inner plate 31 may be provided with a recess 31 g in the vicinity of the gasket mounting portion 31 c so as to face the portion of the gasket 22 located inside the freezer compartment 15. .

In addition, when the bank part 31b is arrange | positioned in the perimeter of the door 15a corresponding to the perimeter of the front opening part of the freezer compartment 15, the recessed part 31d may be arrange | positioned over the perimeter of the door 15a. Thereby, the dew condensation by the fall of the surface temperature of the gasket 22 can be prevented more effectively.

In the present embodiment, the vacuum heat insulator 36 is not bonded to the inner plate 31 from the center 53 of the gasket mounting portion 31c to the door cap 34. That is, the gasket mounting part (outer side) 31cb, which is a part located on the outer side of the gasket mounting part 31c, is not bonded to the vacuum heat insulator 36. A space 58 is formed between the storage case 36 b of the vacuum heat insulator 36, the inner plate 31 (gasket attachment portion (outside) 31 cb), and the door cap 34. On the other hand, the side surface portion of the vacuum heat insulator 36 and the inner surface of the substantially flat portion 31a of the inner plate 31 are bonded.

In addition, in this Embodiment, the warehouse inner side of the gasket attachment part 31c and the warehouse outer side of a gasket attachment part refer to the side close | similar to the inside of a warehouse, and the side close | similar to the exterior of the gasket attachment part 31c, respectively. .

[3. Operation]
About the refrigerator comprised as mentioned above, the operation | movement etc. are demonstrated using FIG.

As shown in FIG. 4, the cool air in the freezer compartment 15 hits the inner plate 31 of the door 15a. Thereby, the substantially plane part 31a of the inner plate 31 which contacts cold air is cooled. Here, in this Embodiment, it seals with the gasket 22 so that cold air may not leak out of the refrigerator 100 outside. Further, the cold air sealing member 54 and the throat portion 55 prevent the cold air from flowing into the gasket attachment portion 31c. Thereby, it can suppress that the gasket 22 is directly cooled by the cool air in a store | warehouse | chamber.

The substantially flat surface portion 31a and the throat portion 55 of the inner plate 31 are cooled by the cool air in the cabinet. The gasket 22 is cooled by heat conduction from the inner plate 31 and the bank portion 31b. At this time, if the gasket 22 is cooled to a dew point temperature or lower, dew condensation occurs. Therefore, from the viewpoint of preventing dew condensation, it is important to suppress heat conduction in the peripheral portion of the gasket mounting portion 31c.

In the present embodiment, the bank 31b is provided with a recess 31d that suppresses heat conduction. Thereby, the heat conduction in the inner plate 31 is suppressed. In addition, as above-mentioned, the recessed part 31d is arrange | positioned in the position inside a warehouse from the gasket attachment part 31c, for example. And it is preferable that the plate | board thickness of the recessed part 31d is made into the thin-walled shape which is 1/3 to 1/2 of the plate | board thickness of the substantially plane part 31a.

In addition, the thin part of the recessed part 31d may be disposed on the entire periphery of the inner plate 31 corresponding to the entire periphery of the front opening of the freezer compartment 15. Further, in consideration of the strength of the inner plate 31 and the resin flow during molding, the recessed portion 31 d may partially have the same thickness as the basic thick portion of the inner plate 31.

Further, the dent may be configured as a heat conduction suppressing portion in which a thin thick portion is continuous on the outer side of the gasket mounting portion 31c. For example, in the present embodiment, a recessed portion 31f that is a thin-walled portion is disposed as a recessed portion in the gasket mounting portion 31cb on the outer side of the gasket mounting portion 31c. In the example shown in FIG. 4, the recessed portion 31f, which is a U-shaped thin portion having a small cross-sectional area, is combined with a thin portion having a long distance, that is, a recessed portion 31f thinned in a wide range. . Thereby, the suppression effect of heat conduction is heightened.

The recessed portion 31f is configured as a thin shape that is recessed in the mold drawing direction 57 shown in FIG. 4 in consideration of the moldability and strength of the inner plate 31. However, the present invention is not limited to this, and the thin-walled recessed portion 31 f may be arranged in a direction other than the mold drawing direction 57.

Note that the thickness of the entire peripheral portion of the gasket attachment portion 31 c may be configured to be thinner than the other portions of the inner plate 31.

In addition, as shown in FIG. 4, the through-hole part 31e may be arrange | positioned in the bank part 31b which comprises the throat part 55. As shown in FIG. And it is good also as a structure by which at least any one of the recessed part 31d and the through-hole part 31e is arrange | positioned at the bank part 31b.

In the present embodiment, the storage case 36b serving as a covering material in the vacuum heat insulating body 36 is bonded to the inner portion of the inner plate 31 from the gasket mounting portion 31c. For this reason, the storage case 36b is cooled by heat exchange with the cool air in the cabinet. That is, the portion of the storage case 36b that contacts the inner surface of the substantially flat portion 31a is cooled. And the gasket attachment part 31c is cooled by thermally conducting to the warehouse outer side of the storage case 36b.

Here, in the present embodiment, the storage case 36b and the inner plate 31 (the gasket attachment portion 31ca) are bonded to each other inside the center 53 of the gasket attachment portion 31c. Further, a space 58 is disposed between the storage case 36b, the inner plate 31 (gasket mounting portion 31cb), and the door cap 34 on the outer side of the center 53 of the gasket mounting portion 31c. Thereby, the heat exchange between the storage case 36b and the gasket attachment part 31c can be suppressed.

Further, the recessed portion 31f is disposed in a portion of the gasket mounting portion 31c (gasket mounting portion 31cb) that forms a part of the space portion 58. Further, by reducing the thickness of the portion constituting the outer side of the gasket mounting portion 31c to be smaller than the thickness of the portion constituting the inner side, the heat conduction in the inner plate 31 can be further suppressed. it can.

In the present embodiment, in order to ensure the strength of the heat insulating door casing 21, the inner plate 31 (gasket mounting portion 31ca) inside the warehouse from the center 53 of the gasket mounting portion 31c and the storage case 36b are bonded. It has a configuration. However, the space 58 may be provided between the inner plate 31 and the storage case 36b in the entire gasket mounting portion 31c. Thereby, the heat exchange between the storage case 36b and the gasket attachment portion 31c can be further suppressed.

In the present embodiment, the portion (side surface portion 36ba) of the storage case 36b facing the door cap 34 and the door cap 34 are in contact with each other. Therefore, the door cap 34 is cooled by heat conduction from the storage case 36b. However, the temperature of the air in contact with the door cap 34 is higher than the temperature of the outside air in contact with the gasket 22 and the gasket mounting portion 31c. Therefore, the door cap 34 does not decrease to the dew point temperature. For this reason, even if it makes the side part 36ba and the door cap 34 contact each other, quality does not fall.

Further, in the present embodiment, in order to join the vacuum heat insulator 36 and the inner plate 31, the side surface portion 36 ba of the vacuum heat insulator 36 and the door cap 34 are bonded. Note that the vacuum heat insulator 36 is insulated not only between the first main surface inside the warehouse and the inner surface of the substantially flat portion 31a but also by adhering the side surface portion 36ba of the vacuum heat insulator 36 and the door cap 34. The torsional strength of the door casing 21 is increased, and the durability of the heat insulating door casing 21 is improved. In addition, the side surface portion 36ba of the vacuum heat insulating body 36 and the door cap 34 may be bonded to each other in order to firmly join them, or may be bonded to a part of the contacting surfaces.

(Embodiment 2)
FIG. 5 is a cross-sectional view of the freezer compartment door according to the second embodiment as viewed from the right side. FIG. 6 is an enlarged view of a main part of the cross-sectional view of the refrigerator door shown in FIG. 5.

The description of the same parts as those in the first embodiment will be omitted, and different parts will be mainly described.

In the refrigerator of the present embodiment, the structure of the heat insulating material inside the door is different from the structure of the heat insulating material in the first embodiment.

As shown in FIG. 5, the heat insulating door casing 21 constituting the freezer compartment door 15 a of the freezer compartment 15 has an inner plate 31 and an outer plate 32. A plate-like vacuum heat insulating material 61 is disposed between the inner plate 31 and the outer plate 32, and a foamed heat insulating material 62 of hard foamed urethane is filled therein.

As shown in FIG. 6, as in the first embodiment, the bank portion 31 b of the inner plate 31 has a recessed portion 31 d at a portion that faces the partition wall 33 and forms the throat portion 55. The recess 31 d is formed thinner than the thickness of the inner plate 31. The recessed part 31d can suppress heat conduction if it is formed thinner. However, in consideration of the thin resin moldability and the strength of the inner plate, the thickness of the recessed portion 31d is configured to be one third to one half of the plate thickness of the substantially flat portion 31a of the inner plate 31. May be. Moreover, although the number of the recessed parts 31d may be one, it will be more effective when arrange | positioned in two or more places.

In addition, the recessed part 31d may be arrange | positioned in any of the surface of the inner side of the inner plate 31, and the surface of the outer side. When the inside surface of the warehouse is recessed, that is, when the recessed portion 31d is disposed inside the bank portion 31b, the foam heat insulating material 62 enters the recessed portion 31d.

In the present embodiment, the case where the inside of the heat insulating door casing 21 is filled with the foam heat insulating material 62 has been described. However, only the vacuum heat insulating material 61 is arranged without being filled with the foam heat insulating material 62. There may be.

In the refrigerator configured as described above, the cooling of the gasket 22 due to heat conduction is suppressed by disposing the recess 31d as in the first embodiment. Thereby, dew condensation on the gasket 22 can be avoided.

In the same manner as in the first embodiment, in the gasket mounting portion 31c of the inner plate 31, a recessed portion 31f may be disposed in a portion (gasket mounting portion 31cb) located on the outer side of the gasket 22. And you may make the plate | board thickness in the recessed part 31f smaller than the plate | board thickness of the part (gasket attachment part 31ca) which comprises the warehouse inner side of the gasket attachment part 31c, and may make it thin. Thereby, the heat conduction from the gasket attachment portion 31c to the gasket 22 can be further suppressed.

As mentioned above, although the refrigerator which concerns on this indication was demonstrated using embodiment, this indication is not limited to this. That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. In other words, the scope of the present disclosure is indicated not by the above description but by the scope of claims, and is intended to include meanings equivalent to the scope of claims and all modifications within the scope.

The refrigerator door according to the present disclosure can improve the quality of the refrigerator by avoiding condensation of the gasket. Therefore, the present invention can also be applied to household refrigerators, commercial refrigerators, refrigerated refrigeration facilities, and the like having a heat insulating door provided with a gasket.

11 refrigerator main body 12 refrigerator compartment 12a door (refrigerator compartment door)
13 Ice making room 13a Door (ice making room door)
14 Switching room 14a Door (switching room door)
15 Freezer compartment 15a Door (freezer compartment door)
16 Vegetable room 16a Door (vegetable room door)
21 Insulating door housing 22 Gasket 23 Frame 31 Inner plate 31a Substantially flat portion 31b Bank portion 31c Gasket mounting portion 31ca Gasket mounting portion (inside of warehouse)
31cb gasket mounting (outside)
31d dent (first dent)
31e Through-hole part 31f Recessed part (2nd recessed part)
31g Indented portion 32 Outer plate 33 Partition wall 34 Door cap 36 Vacuum heat insulator 36a Core material 36b Storage case 36ba Side surface portion 36c Sealing member 54 Cold air seal member 55 Throat portion 58 Space portion 61 Vacuum heat insulating material 62 Foam heat insulating material 100 Refrigerator

Claims

The refrigerator body,
A door that opens and closes the front opening of the refrigerator body,
The door
An inner plate,
The outer plate,
A heat insulating material disposed between the inner plate and the outer plate;
A gasket attached to the inner plate and sealing the front opening by contacting a peripheral edge of the front opening;
The inner plate has a bank portion that faces the front opening and protrudes toward the inner side of the warehouse,
In the bank portion of the inner plate, at least one of the first dent portion and the through hole portion is disposed,
refrigerator.
The inner plate has a gasket mounting portion for mounting the gasket,
A second dent is disposed in a portion located on the outer side of the gasket mounting portion,
The refrigerator according to claim 1.
The plate thickness of the inner plate in the second recessed portion is smaller than the plate thickness of the inner portion of the gasket mounting portion,
The refrigerator according to claim 2.
The insulation is a vacuum insulation;
The portion located on the inner side of the gasket mounting portion and the vacuum insulator are bonded,
A space is disposed between the portion of the gasket mounting portion located outside the warehouse and the vacuum heat insulator,
The refrigerator according to claim 1.
The door has a door cap on a side surface parallel to the thickness direction of the door,
The door cap and the vacuum insulator are bonded,
The refrigerator according to claim 4.
The vacuum insulator is
While having a core material, a storage part for storing the core material, and a sealing member for sealing the opening of the storage part,
The storage portion is opposed to the inner plate, and the sealing member is disposed to face the outer plate and is covered by the outer plate.
The refrigerator according to claim 4 or 5.