CN108474608B

CN108474608B - Refrigerator with a door

Info

Publication number: CN108474608B
Application number: CN201680048253.3A
Authority: CN
Inventors: 川浪徹; 福田圭一
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2016-01-29
Filing date: 2016-08-01
Publication date: 2020-10-20
Anticipated expiration: 2036-08-01
Also published as: CN108474608A; JP6652396B2; JP2017133784A; WO2017130442A1

Abstract

The invention provides a refrigerator which can restrain the deformation of a flow passage through which cold air sent to a storage chamber passes so as to ensure a cold air flow passage. The refrigerator is provided with: a storage compartment (e.g., a refrigerator compartment); a heat insulation box body provided around the storage chamber; a cold air passage part (e.g., a duct forming part) which is located between the storage compartment and the heat insulation box and forms a passage through which cold air sent out to the storage compartment passes; and a heat insulating member (e.g., foamed styrene) disposed between the cold air duct member and the storage compartment. The cold air channel component is fixed on the inner wall of the heat insulation box body and forms a cylindrical cold air channel through which the cold air sent to the storage chamber passes. In addition, the heat insulating member is separated from the cold air path by the cold air path member.

Description

Refrigerator with a door

Technical Field

The present invention relates to a refrigerator having a cool air passage at a rear surface thereof.

Background

In a typical refrigerator, a cooling chamber for accommodating a cooler and the like is disposed on a rear surface of a storage chamber. The cold air generated in the cooling compartment passes through a cold air duct (also referred to as a cooling duct) provided on the rear surface of the storage compartment, and is then sent to each storage compartment such as a refrigerating compartment and a freezing compartment.

For example, in the refrigerator 1 disclosed in patent document 1, a cold air duct 32 is provided on the rear surface of the refrigerating chamber 2. First discharge ports 73a to 73c and 74a to 74c are disposed in cold air duct 32 at positions corresponding to both ends in the left-right direction of refrigerating room 2. The cold air is sent out from these discharge ports toward refrigerating room 2.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2010-54159

Disclosure of Invention

Technical problem to be solved by the invention

In addition, in refrigerator 1 disclosed in patent document 1, a circulation duct 81 for circulating cold air between refrigerating room 2 and the rear surface of refrigerating room 2 is also formed. The cold air duct 32 and the circulation duct 81 are disposed so as to overlap one another. The cold air duct 32 and the circulation duct 81 are formed with flow passages by the mounting base plate 71 formed of a molded product of a heat insulating material such as expanded styrene.

In many refrigerators, the surface of a cold air duct for sending cold air to a refrigerating chamber or the like is formed of a heat insulating material such as polystyrene foam. That is, the cold air sent to the storage room in the refrigerator passes through the cold air passage while contacting the heat insulating material such as polystyrene foam.

Expanded styrene, which is widely used as a heat insulating material for refrigerators, is a relatively soft material. Therefore, if the inside of the cold air passage is formed of expanded styrene, there is a possibility that the shape of the flow passage is deformed by receiving an impact or the like.

In addition, the foamed styrene has a property of being easily reacted with other chemical components. Therefore, if a food material that generates gas, such as citrus fruit, is stored in the storage chamber, the foamed styrene may be deteriorated or dissolved by the gas generated from the food material.

Further, a heat insulating material such as expanded styrene has a property that odor is easily attached. Therefore, when the heat insulating material is exposed to the surface of the cold air duct, odor of foods or the like contained in the storage chamber is also injected into the cold air duct through the vent or the like, and odor adheres to the heat insulating material. The bad smell adhering to the heat insulating material flows into the storage chamber by the cold air sent out from the cold air passage, and therefore, the whole storage chamber may be contaminated with the bad smell. In particular, this problem is more serious in a refrigerator including a circulation passage for circulating cold air between the refrigerator and a storage chamber, as in the refrigerator disclosed in patent document 1.

Accordingly, an object of the present invention is to provide a refrigerator capable of preventing a flow passage through which cold air to be supplied to a storage chamber passes from being deformed, thereby securing the cold air flow passage.

Means for solving the problems

A refrigerator according to one embodiment of the present invention includes: a storage chamber; a heat insulation box provided around the storage chamber; a cold air path member between the storage compartment and an inner wall of the heat insulation case; and a heat insulating member disposed between the cold air duct member and the storage chamber. In the refrigerator, the cold air duct member is fixed to an inner wall of the heat insulating box and forms a cylindrical cold air duct through which cold air sent to the storage chamber passes. Further, the heat insulating member is isolated from the cold air duct by the cold air duct member.

In the refrigerator according to the present invention, the heat insulating member may be detachably attached to the cold air duct member and the inner wall of the heat insulating box in a state where the cold air duct member is fixed to the inner wall of the heat insulating box.

In the refrigerator according to the present invention, the cold air duct member may be provided with a blow-out port for guiding the cold air to the storage chamber.

In the refrigerator according to the present invention, the cold air duct may be formed between the cold air duct member and an inner wall of the heat insulating box, and an outlet for sending the cold air to the storage chamber may be formed by the cold air duct member and the inner wall.

In the refrigerator according to the present invention, a recess may be formed in an inner wall of the heat insulating box at a position corresponding to a rear surface of the storage compartment, and the cold air duct member and the heat insulating member may be disposed in the recess.

Effects of the invention

As described above, in the refrigerator according to the present invention, the cold air duct member is fixed to the inner wall of the heat insulating box, and forms a cylindrical cold air duct through which the cold air sent to the storage chamber passes. Then, the heat insulating member is isolated from the cold air path by the cold air path member. Therefore, the cold air passage can be secured by the cold air passage member, and deformation of the cold air passage can be suppressed.

Drawings

Fig. 1 is a front view schematically showing an internal structure of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a side sectional view showing an internal structure of a refrigerator according to an embodiment of the present invention.

Fig. 3(a) is a cross-sectional view taken along line X-X of the refrigerator shown in fig. 2. (b) A sectional view showing a modification of the refrigerator shown in (a).

Fig. 4 is a front view schematically showing the structure of a heat insulating member provided in a refrigerator according to an embodiment of the present invention.

Fig. 5 is a sectional view showing an internal structure of a refrigerator according to a second embodiment of the present invention. The cross section shown in the figure corresponds to the cross section at the same position as the X-X line of the refrigerator shown in fig. 2.

Fig. 6 is a side sectional view showing a sectional structure of an upper portion of a rear side of the refrigerator shown in fig. 5.

Fig. 7 is a front view schematically showing an internal structure of a refrigerator according to a third embodiment of the present invention.

Fig. 8 is a side sectional view showing an internal structure of a refrigerator according to a third embodiment of the present invention.

Fig. 9(a) is a cross-sectional view of the X-X line portion of the refrigerator shown in fig. 8. (b) A sectional view showing a modification of the refrigerator shown in (a).

Fig. 10 is a front view schematically showing an internal structure of a refrigerator according to a fourth embodiment of the present invention.

Fig. 11 is a front view schematically showing an internal structure of a refrigerator according to a fifth embodiment of the present invention.

Fig. 12 is a sectional view showing a structure of a rear surface portion of a refrigerator according to a fifth embodiment of the present invention. Which is a cross-sectional view taken along line Y-Y of the refrigerator shown in fig. 8.

Fig. 13 is a perspective view showing a structure of a duct forming member provided in a refrigerator according to a sixth embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Thus, detailed description thereof will not be repeated.

< first embodiment >

In the first embodiment, a refrigerator having a refrigerated storage space in an upper part and a frozen storage space in a lower part will be described as an example of a refrigerator according to the present invention. However, the arrangement of the storage spaces of the refrigerator according to the present invention is not limited thereto.

< integral Structure of refrigerator >

First, the overall structure of the refrigerator 1 according to the present embodiment will be described. Fig. 1 is a front view showing the overall configuration of a refrigerator 1 according to the present embodiment. Fig. 2 is a side sectional view showing the overall configuration of the refrigerator 1 according to the present embodiment.

As shown in fig. 1 and 2, refrigerator 1 includes refrigerating room (storage room) 11 in an upper stage, first freezing room 12 in a lower stage, ice making room 13 on a left side of a middle stage, and second freezing room 14 on a right side of the middle stage. Refrigerating compartment 11 is provided with door 11a that opens and closes from either of the left and right ends. The door provided in the refrigerating compartment 11 may be a left-right split door. The ice making chamber 13 is provided with a drawer-type door (not shown). The second freezing compartment 14 is also provided with a drawer-type door 14 a. First freezing compartment 12 is also provided with a drawer-type door 12 a.

In the present embodiment, the surface provided with the door is the front surface of the refrigerator. The surface opposite to the front surface is a back surface. In the present specification, the term "front surface side" or "back surface side" means a side where a front surface or a back surface is provided with reference to an arbitrary position or a direction from an arbitrary position toward the front surface or the back surface. The direction from the front surface to the rear surface or from the rear surface to the front surface is referred to as a front-rear direction.

The refrigerator 1 is provided with a heat insulation box 50 (see fig. 2) as a heat insulation structure for insulating each storage space from the surroundings. The heat insulating box 50 is provided so as to cover the outer periphery of the refrigerator 1. As shown in fig. 2, the heat insulation box 50 mainly includes an outer box 51, an inner box (inner wall of the heat insulation box) 52, and a heat insulation layer 53.

The outer box 51 forms the outer peripheral surface of the heat insulating box 50. The outer case 51 also partially forms the outer appearance of the refrigerator 1. The inner case 52 forms the inner peripheral surface of the heat insulation box 50. Further, the inner box 52 forms an inner wall of each storage space (e.g., the refrigerating compartment 11, the first freezing compartment 12, etc.). The heat insulating layer 53 is made of, for example, a vacuum heat insulating material 53a (not shown in fig. 2) and a foam heat insulating material. The vacuum insulation material 53a is a thin sheet-like or plate-like insulation material. The thermal insulating foamed material can be formed of, for example, foamed polyurethane. In the present embodiment, the vacuum insulation material 53a is disposed so as to be in contact with the outer box 51 of the insulation box 50 (see fig. 3 a).

Then, a plurality of moving

racks

21, 22, 23 and

shelves

24, 25 are arranged in this order from above in the refrigerating compartment 11. The moving racks 21, 22, and 23 are placed on a protruding portion (not shown) provided on an inner wall of the refrigerating compartment 11.

The

shelves

24 and 25 are fixed to the inner wall of the refrigerating compartment 11 and cannot be removed in normal use. The shelf 24 is fixed to the inner box 52 on the rear surface side of the refrigerating compartment 11. Further, the shelves 25 are also attached to the inner wall of the refrigerating compartment 11 similarly to the shelves 24.

As shown in FIG. 2, a fresh food box (Japanese: チルドケース)15a is disposed between the

shelves

24 and 25. The fresh food compartment 15 is formed by the fresh food box 15a and the shelves 24. The shelves 24 form the upper surface of the fresh food compartment 15.

As shown in fig. 2, a fruit box 16a and a vegetable box 17a are disposed in this order from above below a shelf 25 corresponding to the bottom portion of the refrigerating compartment 11. Then, the vegetable compartment 17 is formed by the fruit box 16a, the vegetable box 17a, and the shelf 25. The shelf 25 constitutes an upper surface of the vegetable compartment 17. Further, a fruit storage chamber 16 including a fruit box 16a is provided above the vegetable chamber 17.

As described above, by providing the shelf 24 on the upper surface of the fresh food compartment 15, the fresh food compartment 15 can be a storage space isolated from the refrigerating compartment 11. This makes it possible to adjust the temperature in the fresh food compartment 15 to a temperature different from the temperature in the refrigerating compartment 11.

Further, by providing the shelf 25 on the upper surface of the vegetable compartment 17, the vegetable compartment 17 including the fruit storage compartment 16 can be a storage space isolated from the refrigerating compartment 11. This can prevent cold air from directly contacting the vegetable room 17 or the stored items in the vegetable room from drying.

In addition, although not shown, in the refrigerator 1 according to the present embodiment, a water supply tank is disposed in the refrigerating chamber 11. The water supply tank contains water and is used when ice is made in the ice making chamber 13 located at the lower stage. The water in the water supply tank is supplied to an ice maker 19 disposed above the ice making chamber 13.

On the back side of refrigerating room 11, shower duct 30 serving as a cold air duct is disposed. As shown in fig. 2, the shower duct 30 is constituted by a duct forming member (cold air duct member) 31 and an inner case 52 constituting an insulation box 50, and serves as a cold air duct. In other words, the space formed between the duct forming member 31 and the inner box 52 becomes the shower duct 30. As will be described later, the duct forming member 31 is fixed to the inner case 52 by a fixing member such as a screw 33.

The duct forming member 31 is formed of a hard material. By forming duct forming member 31 from a hard material, duct forming member 31 is less likely to deform, and the inner diameter of shower duct 30 serving as a cold air duct can be ensured more reliably. Examples of the hard material include hard plastic and metal. Examples of the hard plastic include ABS resin, polypropylene (PP) resin, and AS resin.

Further, a heat insulating member 34 made of foamed styrene or the like is provided on the front surface side of the duct forming member 31. By providing heat insulating member 34, it is possible to suppress the occurrence of condensation on the surface of refrigerating room 11 at the boundary between shower duct 30 and refrigerating room 11.

Then, a cooling plate (plate member) 32 is disposed on the front side of the heat insulating member 34. The cooling plate 32 can be formed of a metal plate having high thermal conductivity. The cooling plate 32 is a thin plate-like member having a rectangular front shape, and is exposed to the refrigerating compartment 11. That is, the cooling plate 32 forms a part of the rear surface of the refrigerating compartment 11. This allows the stored material in the refrigerating compartment 11 to be cooled by radiation. The cooling plate 32 may be a member having a low heat conductivity. Further, the cooling plate 32 may be a decorative plate. Since the cooling plate 32 is a decorative plate, the beauty of the interior of the refrigerating compartment 11 can be improved.

As described above, in the refrigerator 1 according to the present embodiment, the heat insulating member 34 is disposed between the duct forming member 31 and the cooling plate 32. Accordingly, the occurrence of condensation on the inner wall of refrigerating room 11 can be suppressed by the temperature difference between the passage through which the cold air from cooling room 40 passes and refrigerating room 11.

In a state where the heat insulating member 34 is sandwiched in the space formed between the cooling plate 32 and the duct forming member 31, the cooling plate 32 is detachably attached to the duct forming member 31 or the inner box 52 by an engaging member such as an engaging claw. Therefore, when the cooling plate 32 and the heat insulating member 34 are soiled, they can be easily removed and cleaned. The duct forming member 31 is fixed to the inner case 52 by a fixing member such as a screw. Therefore, when the cooling plate 32 and the heat insulating member 34 are attached and detached, the duct forming member 31 can be configured not to be easily detached from the main body of the refrigerator 1.

In the refrigerator 1 of the present embodiment, the duct forming member 31 forms a cold air duct, instead of the heat insulating member 34. The duct forming member 31 is formed of a material harder than the heat insulating member 34 and is hard to deform. Therefore, even when the heat insulating member 34 is deformed, for example, by attaching and detaching the heat insulating member 34 a plurality of times, the shape of the cold air duct formed by the duct forming member 31 can be maintained.

In the present embodiment, cold air in shower duct 30 is discharged to refrigerating room 11 through outlet 30a provided at an upper end portion of refrigerating room 11. Specifically, as shown in fig. 2, duct forming member 31 is inclined toward refrigerating compartment 11 at an upper portion of shower duct 30. Then, the duct forming member 31 contacts the apex of the cooling plate 32 at the apex thereof. The heat insulating member 34 disposed between the duct forming member 31 and the cooling plate 32 has a thickness gradually decreasing upward in accordance with the shape of the duct forming member 31.

Further, the upper wall of the refrigerating compartment 11 and the upper end portion of the duct forming member 31 are spaced apart from each other with a certain interval. Thereby, cold air outlet 30a is formed at the uppermost portion of refrigerating room 11.

As described above, in the refrigerator 1 according to the present embodiment, the heat insulating member 34 is configured to be isolated from the passage of the cold air by the duct forming member 31. In the refrigerator 1 according to the present embodiment, the heat insulating member 34 is separated from the refrigerating compartment 11 by the cooling plate 32. Thus, when the heat insulating member 34 is made of expanded styrene to which odor and dirt are likely to adhere, the cold air can be prevented from directly contacting the heat insulating member 34.

Cooling chamber 40 is disposed on the rear side of first freezing chamber 12 and second freezing chamber 14. In cooling compartment 40, evaporator 41 constituting a refrigeration cycle, glass tube heater 65 for defrosting evaporator 41, and cooling fan 43 for sending cold air from evaporator 41 to second freezing compartment 14 and the like are arranged. The upper side of the cooling chamber 40 communicates with the shower duct 30.

A damper 45 is provided between the cooling chamber 40 and the shower duct 30. By opening and closing the damper 45, the flow of the cold air to the refrigerator compartment 11 can be opened and closed (ON/OFF). Further, a cooling fan 44 is provided above the damper 45 in the shower duct 30. By operating the cooling fan 44, cold air can be sent into the refrigerating compartment 11 through the outlet 30 a.

Further, a plurality of blow-out ports 47a are formed in the vertical direction in the cooling chamber 40. Cold air from cooling compartment 40 is blown out from blow-out opening 47a toward first freezer compartment 12, ice-making compartment 13, and second freezer compartment 14.

Next, a refrigeration cycle provided in the refrigerator 1 will be described. The refrigeration cycle is configured to be connected to a compressor 42, a condenser, an expander, and an evaporator (cooler) 41 via refrigerant pipes through which a refrigerant flows. The expander is constituted by a capillary tube, an expansion valve, and the like. The compressor 42 is disposed in a machine chamber 60 provided on the rear side of the bottom of the refrigerator 1.

Further, a control unit (not shown) is provided inside the refrigerator 1. The control unit controls the operation of the refrigeration cycle. That is, the control unit drives the compressor 42 to start the operation of the refrigeration cycle, and the refrigerant circulates through a path of the compressor 42 → the condenser → the expander → the evaporator 41 → the compressor 42.

While the refrigerant is circulating in the refrigeration cycle in this manner, heat exchange is performed between the air around the evaporator 41 in the evaporator 41 into which the low-temperature refrigerant flows. The heat exchange generates cold air in the cooling compartment 40.

Next, the cold air flow path will be explained. In fig. 1 and 2, the flow of the cold air generated by the refrigeration cycle is indicated by arrows.

The cold air cooled by evaporator 41 is sent from each of blow-out ports 47a to first freezing compartment 12, ice-making compartment 13, and second freezing compartment 14 by cooling fan 43. The cold air having passed through the respective freezing storage spaces is returned to the cooling compartment 40 from below the first freezing compartment 12.

When damper 45 is released, cold air is sent from outlet 30a into refrigerating compartment 11 while rising in shower duct 30 by cooling fan 44. The cold air sent into the refrigerating chamber 11 cools foods, beverages, and the like in the refrigerating chamber while descending from the upper side to the lower side, and returns to the evaporator 41 through the return passage 49 from the return port 48.

< rear surface Structure of refrigerating Chamber >

Next, a more detailed structure of the rear surface of the refrigerating compartment 11 will be described with reference to fig. 3 (a). Fig. 3(a) is a cross-sectional view showing a rear structure of the refrigerating chamber 11 portion of the refrigerator 1 according to the present embodiment. Fig. 3(a) corresponds to a cross section of the X-X line of the refrigerator shown in fig. 2.

As shown in fig. 3(a), the rear surface and the side surface of the refrigerating compartment 11 are covered with a heat insulating box 50. The heat insulating box 50 is mainly composed of an outer box 51, an inner box 52, and a heat insulating layer 53. The inner case 52 of the heat insulation box 50 forms a side wall of the refrigerating chamber 11.

Further, a central portion of the rear surface of the refrigerating compartment 11 is provided with a shower duct 30. As shown in fig. 3(a), the shower duct 30 is formed by a duct forming member 31 and an inner box 52. In the present embodiment, the duct forming member 31 is formed by bending a plate-like member. Then, both right and left end portions of the duct forming member 31 are fixed to the surface of the inner box 52 by a plurality of screws 33. Since the duct forming member 31 is fixed by the screw 33, the duct forming member 31 is not easily detached from the inner case 52.

Thereby, a space is formed between the inner case 52 and the duct forming member 31. The lower part of the space communicates with the cooling chamber 40. The space communicates with the discharge port 30a at the upper side. Thereby, shower duct (cold air duct) 30 for sending the cold air from cooling compartment 40 to refrigerating compartment 11 is formed.

Further, between duct forming member 31 and refrigerating compartment 11, cooling plate 32 and heat insulating member 34 are provided in this order from the refrigerating compartment 11 side. The cooling plate 32 is formed of a plate-like member, and has a curved surface that follows the shape of the duct forming member 31. That is, the cooling plate 32 covers the duct forming member 31 with a certain space from the outer surface of the duct forming member 31. Thereby, a space is formed between the duct forming member 31 and the cooling plate 32. Then, the heat insulating member 34 is disposed in the space.

In the refrigerator 1 according to the present embodiment, the inner wall of the inner box 52 corresponding to the rear surface of the refrigerating chamber 11 has a flat shape. Then, the duct forming member 31, the heat insulating member 34, the cooling plate 32, and the like are disposed so as to protrude from the flat surface of the inner box 52. Therefore, the respective moving

frames

21, 22, and 23 and the

respective shelves

24 and 25 arranged in the refrigerating compartment 11 have recesses (for example, recesses 21a shown in fig. 3 a) formed at the end portions on the back side in accordance with the shape of the cooling plate 32.

As shown in fig. 2, duct forming member 31 is inclined toward refrigerating compartment 11 at a portion above shower duct 30. And, the duct forming member 31 contacts the apex of the cooling plate 32 at the apex thereof. The heat insulating member 34 disposed between the duct forming member 31 and the cooling plate 32 has a thickness gradually decreasing upward in accordance with the shape of the duct forming member 31.

Further, the upper wall of the refrigerating compartment 11 and the apex of the duct forming member 31 are spaced apart from each other with a certain interval. Thereby, cold air outlet 30a is formed at the uppermost portion of refrigerating room 11. As shown in fig. 2, cool air outlet 30a is formed by inner case 52 and duct forming member 31.

Fig. 4 shows a front side structure of the heat insulating member 34. As shown in fig. 4, a plurality of LEDs (illumination) 61 may be attached to the surface of the heat insulating member 34. The LED61 is arranged on a single substrate in units of a plurality (e.g., 3) of LEDs to constitute the LED substrate 62. The LED substrate 62 is disposed in a recess formed in the surface of the heat insulating member 34, for example.

In this way, when the heat insulating member 34 is provided with illumination such as an LED, the cooling plate 32 disposed on the front surface of the heat insulating member 34 is preferably formed of a material having light transmittance. This allows the interior of the refrigerating compartment 11 to be illuminated with light emitted by the illumination. Further, by disposing a light diffusion plate instead of cooling plate 32, the inside of refrigerating room 11 can be made brighter.

In the refrigerator 1 according to the present embodiment, the heat insulating member 34 and the cooling plate 32 disposed on the front surface thereof may have a detachable structure. This enables the cooling plate 32 to be detached and cleaned when the surface thereof is dirty. Further, the heat insulating member 34 can be replaced when, for example, a smell adheres to the heat insulating member 34 or the heat insulating member 34 is deformed.

< effects >

As described above, in the refrigerator 1 according to the present embodiment, the cold air passage can be formed by a member (i.e., the duct forming member 31) different from the heat insulating member 34. The duct forming member 31 is fixed to the inner wall of the heat insulating box 50 (i.e., the inner box 52). Thus, the heat insulating member 34 can form a cylindrical cold air duct without affecting the shape of the cold air duct.

In the present embodiment, the pipe forming member 31 forming the shower pipe 30 is made of a hard material such as ABS resin or PP resin, for example. Therefore, the shape of the cold air duct can be more reliably ensured as compared with a conventional refrigerator in which the shower duct is formed of a relatively soft material (heat insulating member) such as foamed styrene.

In the present embodiment, the polystyrene foam which is easily deteriorated by the influence of the chemical substance has a structure which is not exposed to the surface of the shower pipe 30. Therefore, the surface of the shower duct 30 is prevented from being affected by chemicals released from foods, medicines, etc. stored in the refrigerator and from being deteriorated, and the shape of the cold air passage can be prevented from being deformed.

In the refrigerator 1 according to the present embodiment, the heat insulating member 34 made of foamed styrene is disposed in the space formed by the duct forming member 31 and the cooling plate 32. That is, the entire surface of the heat insulating member 34 is covered with the duct forming member 31 or the cooling plate 32, and is not exposed to the duct and the refrigerating chamber. Thus, the cold air passing through shower duct 30 is discharged from outlet 30a to refrigerating compartment 11 without coming into direct contact with heat insulating member 34.

A heat insulating material such as polystyrene foam, which is commonly used as the heat insulating member 34, has a property of being likely to have an odor. Therefore, when the heat insulating member is exposed to the surface of the shower duct, odor generated from food or the like contained in the refrigerating chamber flows into the shower duct through the air outlet or the like, and odor adheres to the heat insulating member. There is a possibility that the odor attached to the heat insulating member may be transferred to the cold air sent from the shower duct to the refrigerating chamber. In this way, the cold air having the odor also flows into the refrigerating chamber, and therefore, the entire refrigerating chamber may be contaminated with the odor.

In contrast, in refrigerator 1 according to the present embodiment, the cool air passing through shower duct 30 can be discharged from discharge port 30a to refrigerating compartment 11 without contacting heat insulating member 34 with the above-described configuration. Therefore, the odor can be prevented from adhering to the shower duct and the refrigerating chamber.

< modification of rear surface Structure of refrigerating Chamber >

Fig. 3(b) shows a modification of the rear surface structure of refrigerating room 11 of refrigerator 1 according to the present embodiment. Fig. 3(b) is a cross-sectional view showing a refrigerator according to a modification example cut at the same position as fig. 3 (a).

In the refrigerator shown in fig. 3(b), the structure of the duct forming member is different from the duct forming member 31 of the first embodiment. The other configurations are the same as those of the first embodiment.

In the modification shown in fig. 3(b), the duct forming member is constituted by the first member 31a and the second member 31 b. The first member 31a has substantially the same shape as the duct forming member 31 of the first embodiment. Further, the second member 31b has a plate-like shape. As shown in fig. 3(b), the plate-like second member 31b contacts the inner wall of the inner case 52. The first member 31a is disposed on the second member 31 b. The first member 31a is fixed to the surface of the inner case 52 together with the second member 31b by a plurality of screws 33.

The first member 31a and the second member 31b are made of a hard material, as in the duct forming member 31 of the first embodiment. The cooling plate 32 and the heat insulating member 34 can have the same configuration as in the first embodiment.

As described above, in the present modification, the cold air passage is formed by the first member 31a and the second member 31 b. With this configuration, the heat insulating member 34 can form a cylindrical cold air duct without affecting the shape of the cold air duct. Cold air passing through shower duct 30 can be sent out from the air outlet to refrigerating room 11 without contacting heat insulating member 34.

Further, since the cold air duct is formed by the first member 31a and the second member 31b, the cold air duct 30 can be formed regardless of the shape of the surface of the inner box 52. Therefore, even if the surface of the inner box 52 is slightly deformed during the formation of the heat insulating layer 53, the cylindrical shape of the cold air duct 30 is not affected. The first member 31a and the second member 31b may be different members or may be formed in a tubular shape.

< second embodiment >

Next, a second embodiment of the present invention will be explained. With the second embodiment, the structure of the shower duct formed on the rear surface of the refrigerating compartment 11 is different from that of the first embodiment. As for the other structures, basically the same structure as that of the first embodiment can be applied. Therefore, in the second embodiment, only the points different from the first embodiment will be described.

Fig. 5 shows a sectional structure of a rear surface portion of the refrigerator 100 according to the second embodiment. Fig. 6 shows a cross-sectional structure of the upper rear surface side of the refrigerator 100 shown in fig. 5.

As shown in fig. 5, the rear surface and the side surface of the refrigerating compartment 11 are covered with a heat insulating box 50. The heat insulating box 50 is mainly composed of an outer box 51, an inner box 152, and a heat insulating layer 53. The inner box 152 of the heat insulation box 50 forms a side wall of the refrigerating chamber 11. In refrigerator 100 according to the present embodiment, a recess 152a is formed in a central portion in the left-right direction of inner box 152 located on the rear surface of refrigerating chamber 11. Further, in refrigerator 100 according to the present embodiment, second recess 152b is formed in the center portion of recess 152a in the left-right direction, and further recessed from the surface of recess 152 a.

Then, a duct forming member (cold air duct member) 131 formed of hard plastic or the like is disposed on the surface of the recess 152 a. In the present embodiment, the duct forming member 131 has a plate-like shape. Then, the pipe forming member 131 is fixed to the surface of the recess 152a by a plurality of screws 133. Thereby, a space is formed between the second recess 152b and the pipe forming member 131. This space communicates with the cooling chamber 40 at the lower side and constitutes the shower duct 30.

In addition, a heat insulating member 134 made of foamed styrene or the like is disposed on the front surface of the duct forming member 131. As shown in fig. 5, the heat insulating member 134 is configured to be fitted into the recess 152 a. In this manner, in the refrigerator 100 of the present embodiment, the size of the recess 152a is designed to accommodate the heat insulating member 134 in the recess 152a formed in the inner box 152.

Further, a plate member 132 is disposed on the rear surface of the refrigerating compartment 11. Thus, the heat insulating member 134 is covered with the plate member 132 and is not exposed to the refrigerating compartment 11. The plate-like member 132 may be formed of the same material as the cooling plate 32 in the first embodiment. Alternatively, the plate-like member 132 may be formed of the same material as the cooling plate 32 in the first embodiment.

Further, as in the first embodiment, an illumination such as an LED may be attached to the heat insulating member 34. In this case, the plate-like member 132 is preferably formed of a material having light transmissivity.

As shown in fig. 5, in the refrigerator 100, the recess 152a of the rear surface of the refrigerating chamber 11 is covered with the plate-like member 132. This makes the entire rear surface of the refrigerating compartment 11 substantially flat. Therefore, the end portions of the movable frame 121, the spacer (not shown), and the like on the rear surface side can be formed linearly, and the shape of each frame can be simplified. The plate-like member 132 may be provided on the entire rear surface of the refrigerating compartment 11.

In the present embodiment, cold air in shower duct 30 is discharged to refrigerating room 11 through outlet 131a provided at the upper end of refrigerating room 11. This point will be described with reference to fig. 6.

As shown in fig. 6, duct forming member 131 is inclined toward one side of refrigerating compartment 11 at an upper portion of shower duct 30. Then, the pipe forming member 131 contacts the apex of the plate member 132 at the apex thereof. The heat insulating member 134 disposed between the pipe forming member 131 and the plate member 132 has a thickness gradually decreasing upward in accordance with the shape of the pipe forming member 131.

Further, the upper wall 11b of the refrigerating compartment 11 and the upper end portion of the duct forming member 131 are spaced apart from each other with a certain interval. Thereby, cold air outlet 131a is formed in the uppermost portion of refrigerating compartment 11.

As described above, in the refrigerator 100 according to the present embodiment, the heat insulating member 134 made of foamed styrene is disposed in the space formed by the duct forming member 131 and the plate member 132. That is, the entire surface of the heat insulating member 134 is covered with the duct forming member 131 or the plate member 132 without being exposed to the shower duct and the refrigerating chamber. In the refrigerator 100 according to the present embodiment, the shower duct 30 is formed by the duct forming member 131 and the inner box 152, and the cold air outlet 131a is also formed by the duct forming member 131 and the inner box 152.

This allows the cold air passing through shower duct 30 to be discharged from outlet 131a to refrigerating compartment 11 without directly contacting heat insulating member 134. Therefore, the odor can be prevented from adhering to the shower duct and the refrigerating chamber.

In the refrigerator 100 according to the present embodiment, the duct forming member 131 is fixed to the inner box by using a screw 133 or the like. Thus, the duct forming member 131 is not easily detached.

On the other hand, the heat insulating member 134 and the plate member 132 may be engaged with the pipe forming member 231 or the inner box 252 using engagement claws or the like. This enables the heat insulating member 134 and the plate member 132 to be easily attached to and detached from the main body of the refrigerator 100. With this configuration, the heat insulating member 134 and the plate member 132 can be easily cleaned when they are dirty.

Further, according to the present embodiment, the shape of the shower duct (cooling passage) can be maintained by the duct forming member 231. Therefore, when the heat insulating member is deformed by frequently attaching and detaching the heat insulating member or the like, the shape of the cold air duct is less likely to be affected. Thus, the performance of the refrigerator can be maintained for a long period of time.

< third embodiment >

Next, a third embodiment of the present invention will be explained. With the third embodiment, the structure of the shower duct formed on the rear surface of the refrigerating compartment 11 is different from that of the first embodiment. As for other structures, basically the same structure as that of the first embodiment can be adopted. Therefore, in the third embodiment, only the points different from the first embodiment will be described.

< integral Structure of refrigerator >

First, the overall configuration of the refrigerator 200 according to the present embodiment will be described. Fig. 7 is a front view showing the overall configuration of the refrigerator 200 according to the present embodiment. Fig. 8 is a side cross-sectional view showing the overall structure of the refrigerator 200 according to the present embodiment.

As shown in fig. 7 and 8, refrigerator 200 includes refrigerating room (storage compartment) 11 in an upper stage, first freezing room 12 in a lower stage, ice making room 13 on a left side of a middle stage, and second freezing room 14 on a right side of the middle stage. Refrigerating compartment 11 is provided with door 11a that opens and closes from either of the left and right ends.

Refrigerator 200 is provided with heat insulation box 50 (see fig. 8) as a heat insulation structure for insulating each storage space from the surroundings. The heat insulation box 50 is provided to cover the outer circumference of the refrigerator 200. As shown in fig. 2, the heat insulation box 50 mainly includes an outer box 51, an inner box (inner wall of the heat insulation box) 252, and a heat insulation layer 53.

The outer box 51 forms the outer peripheral surface of the heat insulating box 50. The outer case 51 also partially forms the outer appearance of the refrigerator 200. The inner box 252 forms the inner peripheral surface of the heat insulation box body 50. Further, the inner box 252 forms an inner wall of each storage space (e.g., the refrigerating compartment 11, the first freezing compartment 12, etc.). The heat insulating layer 53 is composed of, for example, a vacuum heat insulating material 53a (see fig. 9 a) and a foam heat insulating material. The vacuum insulation material 53a is a thin sheet-like or plate-like insulation material. The thermal insulating foamed material can be formed of, for example, foamed polyurethane.

Then, in the refrigerating compartment 11, a plurality of moving

racks

221, 222, 223 and

shelves

224, 225 are arranged in this order from above. The moving

racks

221, 222, 223 are placed on a protruding portion (not shown) provided on an inner wall in the refrigerating compartment 11.

The

shelves

224 and 225 are fixed to the inner wall of the refrigerating compartment 11 and are not detachable in normal use. The shelf 224 is fixed to the inner case 252 on the rear surface side of the refrigerating compartment 11. Further, the shelves 225 are also attached to the inner wall of the refrigerating compartment 11 similarly to the shelves 224.

A shower duct 30 as a cold air passage is provided on the rear surface side of the refrigerating compartment 11. As shown in fig. 8, shower duct 30 is formed of duct forming member (cold air duct member) 231 and inner box 252 constituting heat insulating box 50, and serves as a cold air duct. In other words, the space formed between the duct forming member 231 and the inner box 252 becomes the shower duct 30. As will be described later, duct forming member 231 has a plurality of cold air outlets 231a formed in the left and right side surfaces thereof. The cold air generated in cooling compartment 40 is blown out into refrigerating compartment 11 through air outlet 231 a.

The duct forming member 231 is formed of the same material as that of the first embodiment. Although not shown, the duct forming member 231 is fixed to the inner case 252 by a fixing member such as a screw. Therefore, when attaching and detaching cooling plate 232 and heat insulating member 234, duct forming member 231 can be configured to be not easily removed from the main body of refrigerator 200.

Further, a heat insulating member 234 made of foamed styrene or the like is provided on the front surface side of the duct forming member 231. By providing heat insulating member 234, it is possible to suppress the occurrence of condensation on the surface of refrigerating compartment 11 at the boundary between shower duct 30 and refrigerating compartment 11.

Further, a cooling plate (plate-like member) 232 is disposed on the front surface side of the heat insulating member 234. The cooling plate 232 is formed of a metal plate having high thermal conductivity. The cooling plate 232 is a thin plate-like member having a rectangular front shape, and is exposed to the refrigerating compartment 11. That is, the cooling plate 232 forms a part of the rear surface of the refrigerating compartment 11. This allows the stored material in the refrigerating compartment 11 to be cooled by radiation.

In a state where heat insulating member 234 is sandwiched in a space formed between cooling plate 232 and duct forming member 231, cooling plate 232 is detachably attached to duct forming member 231 or inner box 252 by an engaging member such as an engaging claw. Therefore, when the cooling plate 232 and the heat insulating member 234 are soiled, they can be easily removed and cleaned.

A decorative plate 233 whose surface is decorated is disposed on the rear surface of refrigerating room 11 so as to surround cooling plate 232. The rear surface of the refrigerating compartment 11 is covered with the decorative panel 233, so that the beauty of the inside of the refrigerating compartment 11 can be improved. Further, by using the decorative plate 233 of bright color tone, the inside of the refrigerator becomes bright, and the user can easily confirm the state of the inside of the refrigerator.

In the refrigerator of the present invention, a decorative plate having the same pattern and color tone as those of the decorative plate 233 may be provided as a plate-like member covering the heat insulating member 234 instead of the cooling plate 232. This can further improve the appearance of the interior of the refrigerating compartment 11. When a decorative plate is used instead of the cooling plate, it is desirable to form the decorative plate from a material having relatively high thermal conductivity.

As described above, in the refrigerator 200 according to the present embodiment, the heat insulating member 234 is disposed between the duct forming member 231 and the cooling plate 232. Accordingly, the occurrence of condensation on the inner wall of refrigerating room 11 can be suppressed by the temperature difference between the passage through which the cold air from cooling room 40 passes and refrigerating room 11.

In the refrigerator 200 according to the present embodiment, the heat insulating member 234 is configured to be isolated from the cold air duct by the duct forming member 231. In the refrigerator 200 according to the present embodiment, the heat insulating member 234 is separated from the refrigerating compartment 11 by the cooling plate 232. Thus, even when the heat insulating member 234 is made of expanded styrene to which odor and dirt are likely to adhere, the cold air can be prevented from directly contacting the heat insulating member 234.

Cooling chamber 40 is disposed on the rear side of first freezing chamber 12 and second freezing chamber 14. The same structure as that of the first embodiment can be applied to the structure inside the cooling chamber 40.

< rear surface Structure of refrigerating Chamber >

Next, a more detailed structure of the rear surface of the refrigerating compartment 11 will be described with reference to fig. 9 (a). Fig. 9(a) is a cross-sectional view showing a rear structure of the refrigerating chamber 11 portion of the refrigerator 200 according to the present embodiment. Fig. 9(a) corresponds to a cross section of the X-X line of the refrigerator shown in fig. 8.

As shown in fig. 9(a), the rear surface and the side surface of the refrigerating compartment 11 are covered with a heat insulating box 50. The heat insulating box 50 is mainly composed of an outer box 51, an inner box 252, and a heat insulating layer 53. The inner box 252 of the heat-insulating box body 50 forms a side wall of the refrigerating chamber 11. In the refrigerator 200 according to the present embodiment, a recess 252a is formed in a central portion in the left-right direction of the inner box 252 located on the rear surface of the refrigerating chamber 11.

Further, the duct forming member 231 and the heat insulating member 234 are disposed in the recess 252 a. As shown in fig. 9(a), in the refrigerator 1 according to the present embodiment, the size of the recess 252a is designed to accommodate the duct forming member 231 and the heat insulating member 234 in the recess 252a formed in the inner box 52.

Cooling plate 232 covers heat insulating member 234 and is disposed at a position corresponding to recess 252 a. The cooling plate 232 constitutes a part of the inner wall of the rear surface of the refrigerating chamber 11. The decorative plates 233 are disposed on both sides of the cooling plate 232 and constitute a part of the inner wall of the rear surface of the refrigerating compartment 11. As shown in fig. 9(a), the surface of cooling plate 232 is substantially the same as the surface of decorative plate 233. This enables the rear surface of the refrigerating compartment 11 to be formed in a flat shape.

Therefore, the rear surface portions of the moving

racks

221, 222, 223 and the

shelves

224, 225 can be formed linearly, and the shapes of the racks can be simplified. This is advantageous when the moving

frames

221, 222, 223 and the

spacers

224, 225 are formed of a material (e.g., glass or the like) that is difficult to process into a complicated shape.

Further, by accommodating duct forming member 231 and heat insulating member 234 in recess 252a, the back surface of refrigerating compartment 11 is formed flat, which also leads to an increase in the internal volume of refrigerating compartment 11.

In the refrigerator 200 according to the present embodiment, the space formed by the duct forming member 231 and the inner box 252 serves as the shower duct 30 through which the cooling air passes. The duct forming member 231 includes a curved plate-like body portion 231b and two space holding portions 231c formed to protrude from the body portion 231 b. The heat insulating member 234 is fitted along the concave surface of the curved main body 231 b.

Further, the tip ends of the two space holding portions 231c protruding from the convex surface side of the body portion 231b contact the rear surface of the inner case 252. Thus, a space surrounded by a part of the rear surface of the inner box 252, the two space holding portions 231c, and a part of the convex surface of the body portion 231b is formed. This space forms a shower duct 30.

Cooling plate 232 is disposed between heat insulating member 234 and refrigerating compartment 11. That is, the cooling plate 232 is disposed on the outermost surface of the recess 252a so as to cover the duct forming member 231 and the heat insulating member 234. A decorative plate 233 is disposed on the rear surface of the inner case 252 except for the recess 252 a.

Further, a gap is provided between the cooling plate 232 and the decorative plate 233. Although not shown in fig. 9(a), the space holding portion 231c has a plurality of air outlets 231 a. According to this configuration, the cold air sent from air outlet 231a passes through between duct-forming member 231 and inner box 252, and flows into refrigerating compartment 11 through the gap between cooling plate 232 and decorative plate 233.

In this manner, by providing the space holding portion 231c of the duct forming member 231 with the grooves and the openings, the plurality of air outlets 231a can be easily formed. As described above, the duct forming member 31 is formed by processing a plate-like member. It is easy to provide grooves and openings in the plate-like member, and the plurality of air outlets 231a can be easily formed without a large-scale apparatus such as a die. Therefore, even when the moving

racks

221, 222, 223 and the

shelves

224, 225 of the refrigerating compartment 11 are expanded to different products, the plurality of air outlets 231a can be easily arranged appropriately for the respective products.

As shown in fig. 8, in the upper portion of shower duct 30, duct forming member 231 is inclined toward one side of refrigerating room 11, as in the first embodiment.

Further, as in the first embodiment, the upper wall of the refrigerating compartment 11 and the apex of the duct forming member 131 are spaced apart from each other with a certain interval. Thereby, cold air outlet 230a is formed in the uppermost portion of refrigerating room 11. As shown in fig. 8, the cool air outlet 230a is formed by the inner case 252 and the duct forming member 231.

In the refrigerator 200 according to the present embodiment, the heat insulating member 234 and the cooling plate 232 disposed on the front surface thereof may have a detachable structure. This enables the cooling plate 232 to be detached and cleaned when the surface thereof is dirty. Further, the heat insulating member 234 can be replaced when, for example, a smell adheres to the heat insulating member 234 or the heat insulating member 234 is deformed.

< modification of rear surface Structure of refrigerating Chamber >

Fig. 9(b) shows a modification of the rear surface structure of refrigerating room 11 of refrigerator 1 according to the present embodiment. Fig. 9(b) shows a cross-sectional structure of a refrigerator according to a modification example, cut at the same position as that of fig. 9 (a).

In the refrigerator shown in fig. 9(b), the shape of the duct forming member 231' is different from that of the duct forming member 231 of the third embodiment. The other structure is the same as that of the third embodiment.

As shown in fig. 9(b), the duct forming member 231 ' is mainly composed of a cylindrical portion 231 ' b and two projecting plate-like portions 231 ' c. The cylindrical portion 231' b has a cylindrical shape having a rectangular cross section. The interior of the cartridge then becomes a shower duct 30 through which cold air from the cooling chamber passes. Although not shown, a plurality of air outlets are formed in the lateral side surface of the cylindrical portion 231' b in the short direction. The cold air having passed through shower duct 30 is sent out from the air outlet to refrigerating room 11.

Further, the projecting plate-like portion 231 'c projects along one side surface in the longitudinal direction of the duct forming member 231'. Thus, a single plate-like member is formed from the one projecting plate-like portion 231 ' c to extend over the other projecting plate-like portion 231 ' c via one side surface of the duct forming member 231 '. The one plate-like member has substantially the same shape as the main body 231b of the duct forming member 231 according to the third embodiment.

Then, the heat insulating member 234 made of foamed styrene is disposed in the space formed by the duct forming member 231' and the cooling plate 232. That is, the entire surface of the heat insulating member 234 is covered with the duct forming member 231' or the cooling panel 232, and is not exposed to the duct and the refrigerating chamber. As a result, the cold air passing through shower duct 30 can be sent out from the air outlet to refrigerating compartment 11 without contacting heat insulating member 234.

According to this modification, the cold air passage 30 can be formed regardless of the shape of the surface of the inner box 252. Therefore, even if the surface of the inner case 252 is slightly deformed when the heat insulating layer 53 is formed, the cylindrical shape of the cold air duct 30 is not affected. Further, a plurality of air outlets are formed in the lateral side surface of the cylindrical portion 231' b. That is, the shapes of the cold air duct 30 and the air outlet are determined only by the duct forming member 231'. Therefore, the shape of the cold air passage and the air outlet can be maintained without being affected by deformation of the inner box 252, the heat insulating member 234, and the like.

< fourth embodiment >

Next, a fourth embodiment of the present invention will be explained. With the fourth embodiment, the structure of the shower duct formed at the rear surface of the refrigerating compartment 11 is different from that of the third embodiment. Other structures can basically employ the same structure as that of the third embodiment. Therefore, the fourth embodiment will be described only in terms of differences from the third embodiment.

In the third embodiment described above, the duct forming member is provided with an air outlet that sends out the cold air. However, the present invention is not limited thereto. Therefore, as a fourth embodiment, a configuration in which a groove (recess) is formed in the surface of the inner box to form an air outlet will be described.

Fig. 10 is a front view showing the overall configuration of a refrigerator 300 according to the fourth embodiment. In the refrigerator 300, the arrangement of each storage room is the same as the refrigerator 1 according to the first embodiment. The refrigerator 300 is provided with a heat insulating box as a heat insulating structure for insulating each storage space from the surroundings. The heat insulating box 7 mainly includes an outer box 51, an inner box 352, and a heat insulating layer provided therebetween.

The inner case 352 forms an inner wall of each storage space (e.g., the refrigerating compartment 11, the first freezing compartment 12, etc.). Although not shown, a shower duct serving as a cold air duct is provided on the rear surface side of the refrigerating compartment 11. The shower duct is formed with an inner diameter by a duct forming member (cold air duct member) made of hard plastic or the like and an inner case 352 constituting a heat insulating box.

More specifically, the inner case 352 is formed with a recess 352a constituting a part of the shower duct. Then, a plate-shaped duct forming member is disposed so as to cover the recess 352 a. The space formed between the pipe forming member and the concave portion 352a of the inner case 352 is a cylindrical shower pipe.

As shown in fig. 10, the recess 352a formed in the inner case 352 has a plurality of protruding recesses at both left and right ends thereof. When the plate-like duct forming member is disposed so as to cover concave portion 352a, the plurality of protruding concave portions include portions not covered by the duct forming member, and serve as communication portions through which shower ducts communicate with refrigerating room 11, thereby constituting cold air outlet 331 a. In this way, by providing the protruding recess portion for constituting the air outlet 331a on the inner case 352 side, the processing of the duct forming member can be reduced.

A heat insulating member (not shown) made of foamed styrene or the like is provided on the front surface side of the duct forming member. Further, a cooling plate (plate member) 332 is disposed on the front surface side of the heat insulating member. The cooling plate 332 is formed of a metal plate having high thermal conductivity. The cooling plate 32 is a thin plate-like member having a rectangular front shape, and is exposed to the refrigerating compartment 11. That is, the cooling plate 332 forms a part of the rear surface of the refrigerating compartment 11.

As in the other embodiments, the cooling plate 332 is detachably attached to the duct forming member or the inner box by an engaging member such as an engaging claw in a state where the heat insulating member is sandwiched in the space formed between the cooling plate 332 and the duct forming member. Therefore, when the cooling plate 332 and the heat insulating member are soiled, they can be easily removed and cleaned. The duct forming member is fixed to the inner case 352 by a fixing member such as a screw. Therefore, when the cooling plate 332 and the heat insulating member are attached and detached, the duct forming member can be configured to be not easily detached from the main body of the refrigerator 300.

A decorative plate 333 with a decorated surface is disposed on the rear surface of the refrigerating compartment 11 so as to surround the periphery of the cooling plate 332. The rear surface of the refrigerating compartment 11 is covered with the decorative panel 333, so that the beauty of the interior of the refrigerating compartment 11 can be improved.

< fifth embodiment >

Next, a fifth embodiment of the present invention will be explained. With the fifth embodiment, the structure of the shower duct formed at the rear surface of the refrigerating compartment 11 is different from that of the first embodiment. As for other structures, basically the same structure as that of the first embodiment can be adopted. Therefore, the fifth embodiment will be described only in terms of differences from the first embodiment.

In the first embodiment described above, the duct forming member is provided at an upper portion thereof with an outlet for sending out the cold air. However, the present invention is not limited to this configuration. Therefore, as a fifth embodiment, a configuration in which a cold air outlet is provided in a front portion of a duct forming member will be described.

Fig. 11 shows an overall configuration of a refrigerator 400 according to a fifth embodiment. In the refrigerator 400, the arrangement of the storage compartments is the same as that of the refrigerator 1 according to the first embodiment. In the refrigerator 400, a heat insulating box body is provided as a heat insulating structure for insulating each storage space from the surroundings. The heat insulating box mainly includes an outer box 51, an inner box 452, and a heat insulating layer provided therebetween. The inner box 452 forms an inner wall of each storage space (e.g., the refrigerating compartment 11, the first freezing compartment 12, etc.).

Fig. 12 shows a sectional structure of a rear portion of the refrigerator 400. This figure corresponds to a cross-sectional view of a portion Y-Y of the refrigerator 400 shown in fig. 11. As shown in fig. 12, a shower duct 430 serving as a passage for cold air is provided on the rear surface side of the refrigerating compartment 11. Shower duct 430 has an inner diameter formed by a duct forming member (cold air duct member) 431 made of hard plastic or the like and an inner box 452 constituting an insulation box.

Further, a heat insulating member 434 made of foamed styrene or the like is disposed outside the duct forming member 431 so as to cover the duct forming member 431. The heat insulating member 434 is shaped in such a manner as to fit the outer shape of the pipe forming member 431. As shown in fig. 11, duct forming member 431 has a front surface provided with a plurality of cold air outlets 431 a. As shown in fig. 12, the air outlet 431a is formed to protrude forward so as to penetrate the heat insulating member 434.

An outer cover 432 made of hard plastic or the like is disposed outside the heat insulating member 434 so as to cover the heat insulating member 434. In the outer cover 432, a hole is formed at a position corresponding to the air outlet 431a of the duct forming member 431. The outer cover 432 can be formed of the same material as the cooling plate 32 described in the first embodiment, for example.

Similarly to the other embodiments, the outer cover 432 is detachably attached to the pipe forming member 431 or the inner box 452 by an engaging member such as an engaging claw in a state where the heat insulating member 434 is sandwiched between the outer cover 432 and the pipe forming member 431. Therefore, when the outer cover 432 and the heat insulating member 434 are soiled, they can be easily removed and cleaned. The duct forming member 431 is fixed to the inner case 452 by a fixing member such as a screw. Therefore, when the outer cover 432 and the heat insulating member 434 are attached and detached, the duct forming member 431 can be configured not to be easily detached from the main body of the refrigerator 400.

Further, a heat insulating member 434 made of foamed styrene is disposed in the space formed by the duct forming member 431 and the outer covering 432. That is, the entire surface of the heat insulating member 434 is covered with the duct forming member 431 or the exterior coating material 432, and is not exposed to the shower duct and the refrigerating chamber. In the refrigerator 400 according to the present embodiment, the shower pipe 430 is formed of the pipe forming member 431 and the inner box 452. The cold air outlet 431a is formed as a part of the duct forming member 431.

As a result, cold air passing through shower duct 430 can be sent out from air outlet 431a to refrigerator compartment 11 without contacting heat insulating member 434. Therefore, the odor can be prevented from adhering to the shower duct and the refrigerating chamber.

In refrigerator 400 according to the present embodiment, the inner wall of inner box 452 corresponding to the rear surface of refrigerating chamber 11 has a flat shape. Then, the pipe forming member 431, the outer cover 432, and the like are disposed so as to protrude from the flat surface of the inner case 452. Therefore, in the respective moving

frames

421, 422, 423 and the

respective shelves

424, 425 arranged in the refrigerating compartment 11, a concave portion (for example, a concave portion 421a shown in fig. 12) is formed at an end portion on the back side in accordance with the shape of the outer cover 432.

< sixth embodiment >

Next, a sixth embodiment of the present invention will be explained. With the sixth embodiment, the structure of the duct forming member is different from that of the fifth embodiment. As for the other structures, basically the same structure as that of the fifth embodiment can be adopted. Therefore, only the points of the sixth embodiment that differ from the fifth embodiment will be described.

Fig. 13 shows a duct forming member 531 provided in the refrigerator according to the sixth embodiment. The duct forming member 531 is installed on an inner wall of the inner box constituting the insulation box body. As in the fifth embodiment, shower duct 530 provided in the refrigerator according to the present embodiment has an inner diameter formed by duct forming member (cold air duct member) 531 made of hard plastic or the like and the inner box.

Further, a heat insulating member made of foamed styrene or the like is disposed outside the duct forming member 531 so as to cover the duct forming member 531. The heat insulating member is shaped to fit the outer shape of the duct forming member 531. As shown in fig. 13, a plurality of cold air outlets 531a are provided in a side surface of duct forming member 531. The air outlet 531a is formed to penetrate the heat insulating member.

An outer covering material made of hard plastic or the like is disposed outside the heat insulating member so as to cover the heat insulating member. In the outer cover, a hole is formed at a position corresponding to the air outlet 531a of the duct forming member 531.

As in the other embodiments, the outer cover is detachably attached to the duct forming member 531 or the inner box by an engaging member such as an engaging claw in a state where the heat insulating member is sandwiched between the outer cover and the duct forming member 531. Therefore, the outer cover material and the heat insulating member can be easily detached and cleaned when they are soiled. The duct forming member 531 is fixed to the main body of the refrigerator by a fixing member such as a screw. Therefore, when the outer cover and the heat insulating member are attached and detached, the duct forming member 531 can be configured to be not easily detached from the main body of the refrigerator.

According to the above configuration, cold air passing through shower duct 530 can be sent out from air outlet 531a to refrigerator compartment 11 without contacting the heat insulating member. Therefore, the odor can be prevented from adhering to the shower duct and the refrigerating chamber.

The embodiments disclosed herein are illustrative in all respects and should not be considered as limiting the embodiments. The scope of the present invention is indicated by the scope of protection in addition to the description above, and is intended to include meanings equivalent to the scope of protection and all modifications within the scope. In addition, a structure obtained by combining the structures of the different embodiments described in the present specification is also included in the scope of the present invention.

Description of the symbols

1: a refrigerator; 11: a first refrigerating compartment (storage compartment); 30: a spray duct (cold air passage); 30 a: an outlet; 31: a duct forming member (cold air passage member); 32: a cooling plate (plate-like member); 34: a heat insulating member; 50: a heat insulation box body; 51: an outer box; 52: an inner box; 52 a: a recess; 61: LED (lighting).

Claims

1. A refrigerator is provided with: a storage chamber; a heat insulation box provided around the storage chamber; a cold air path member between the storage compartment and an inner wall of the heat insulation case; and a heat insulating member disposed between the cold air duct member and the storage compartment, the cold air duct member being fixed to an inner wall of the heat insulating box and forming a cylindrical cold air duct through which cold air sent to the storage compartment passes, the heat insulating member being separated from the cold air duct by the cold air duct member, the heat insulating member being detachable from the cold air duct member and an inner wall of the heat insulating box in a state in which the cold air duct member is fixed to the inner wall of the heat insulating box.

2. The refrigerator of claim 1, wherein,

the cold air passage member is provided with a blow-out port that guides the cold air to the storage chamber.

3. The refrigerator of claim 1 or 2,

the cold air duct is formed between the cold air duct member and an inner wall of the heat insulating box, and an outlet for sending the cold air to the storage chamber is formed by the cold air duct member and the inner wall.

4. The refrigerator of claim 1 or 2,

a recess is formed in an inner wall of the heat insulating box at a position corresponding to a rear surface of the storage compartment, and the cold air duct member and the heat insulating member are disposed in the recess.