JP2021116945A - refrigerator - Google Patents

Abstract

To provide a refrigerator that can reduce temperature fluctuations of a storage chamber.SOLUTION: A refrigerator according to an embodiment comprises a refrigerator body and a container. The refrigerator body includes a storage chamber. At least a portion of the container is arranged in the storage chamber. The container has a box shape. The container comprises an outer member, an inner member, and a transparent heat insulating material. The outer member comprises a first transparent region capable of transmitting visible light, and forms an outer surface of the container. The inner member is arranged with a gap inside the outer member. The inner member comprises a second transparent region capable of transmitting visible light, in at least a part opposed to the first transparent region. The transparent heat insulating material includes a transparent porous body, and is arranged in the gap between the outer member and the inner member.SELECTED DRAWING: Figure 4

Description

Embodiments of the present invention relate to refrigerators.

Regarding the storage room of the refrigerator, it is required to reduce the temperature fluctuation.

JP-A-2017-13887

An object to be solved by the present invention is to provide a refrigerator capable of reducing temperature fluctuations in a storage chamber.

The refrigerator of the embodiment has a refrigerator body and a container. The refrigerator body includes a storage room. At least part of the container is located in the storage chamber. The container is box-shaped. The container has an outer shell member, an inner shell member, and a transparent heat insulating material. The outer member has a first transparent region through which visible light can pass, and forms the outer surface of the container. The inner shell member is arranged with a gap inside the outer shell member. The inner shell member has a second transparent region through which visible light can be transmitted, at least in a portion facing the first transparent region. The transparent heat insulating material contains a transparent porous body and is arranged in a gap between the outer shell member and the inner shell member.

The front view which shows the refrigerator of 1st Embodiment. FIG. 2 is a cross-sectional view taken along the line F2-F2 in FIG. The perspective view which shows the refrigerating room container in 1st Embodiment. FIG. 3 is a cross-sectional view taken along the line F4-F4 in FIG. FIG. 3 is a cross-sectional view taken along the line F5-F5 in FIG. FIG. 3 is a cross-sectional view taken along the line F6-F6 in FIG. The perspective view which shows the example of the transparent heat insulating material in 1st Embodiment. FIG. 5 is a partial cross-sectional view schematically showing an example of a transparent heat insulating material according to the first embodiment. FIG. 3 is a partial cross-sectional view of a perspective view schematically showing an example of a transparent heat insulating material according to the first embodiment. The perspective view which shows the example of the transparent heat insulating material in 1st Embodiment. The perspective view which shows the example of the 1st heat insulating material in 1st Embodiment. FIG. 5 is a cross-sectional view showing a refrigerator compartment container in the refrigerator of the second embodiment. The perspective view which shows the container in the refrigerator of 3rd Embodiment. FIG. 13 is a cross-sectional view taken along the line F14-F14 in FIG.

Hereinafter, the refrigerator of the embodiment will be described with reference to the drawings. In the following description, configurations having the same or similar functions are designated by the same reference numerals. Then, the duplicate description of those configurations may be omitted.
Unless otherwise specified, the present specification defines left and right based on the direction in which the user standing in front of the refrigerator sees the refrigerator. In addition, the side closer to the user standing in front of the refrigerator when viewed from the refrigerator is defined as "front", and the side far from the refrigerator is defined as "rear". In the present specification, the "width direction" means the left-right direction in the above definition. In the present specification, the "depth direction" means the front-back direction in the above definition. "Vertical direction" means the height direction of the refrigerator.
The + X direction is the right direction, the −X direction is the left direction, the + Y direction is the rear direction, the −Y direction is the front direction, the + Z direction is the upward direction, and the −Z direction is the downward direction, which are indicated by arrow lines in the figure.

(First Embodiment)
The overall configuration of the refrigerator 1 of the first embodiment shown in FIGS. 1 and 2 will be described. However, the refrigerator 1 does not have to have all of the configurations described below, and some configurations may be omitted as appropriate.
FIG. 1 is a front view showing the refrigerator 1. FIG. 2 is a cross-sectional view taken along the line F2-F2 in FIG.
As shown in FIG. 1, the refrigerator 1 has, for example, a housing 10 (refrigerator body) and a plurality of doors 11.
As shown in FIG. 2, the refrigerator 1 has a plurality of shelves 12, a plurality of containers 13, a flow path forming component 14, a first cooling unit 15, a second cooling unit 16, a compressor 17, an evaporating dish 18, and the like. And a circuit board 19.

The housing 10 has an upper wall 21, a lower wall 22, a left side wall 23 (see FIG. 1), a right side wall 24 (see FIG. 1), and a rear wall 25.
The upper wall 21 and the lower wall 22 extend substantially horizontally. The left side wall 23 and the right side wall 24 stand upward from the left end portion and the right end portion of the lower wall 22, respectively. The left side wall 23 and the right side wall 24 are connected to the left end portion and the right end portion of the upper wall 21, respectively. The rear wall 25 stands upward from the rear end of the lower wall 22 and is connected to the rear end of the upper wall 21.

A plurality of storage chambers 27 are formed inside the housing 10. The plurality of storage chambers 27 include, for example, a refrigerator compartment 27A, a vegetable compartment 27B, an ice making chamber 27C (see FIG. 1), a small freezer compartment 27D, and a main freezer compartment 27E. In the present embodiment, the refrigerating chamber 27A is arranged at the uppermost part, the vegetable compartment 27B is arranged below the refrigerating chamber 27A, the ice making chamber 27C and the small freezing chamber 27D are arranged below the vegetable chamber 27B, and the ice making chamber 27C and the small freezing chamber 27D are arranged. The main freezer compartment 27E is arranged below the small freezer compartment 27D. However, the arrangement of the storage chamber 27 is not limited to the above example, and the arrangement of the vegetable chamber 27B and the main freezing chamber 27E may be reversed, for example. The housing 10 has an opening on the front side of each storage chamber 27 (left side in the drawing of FIG. 2) that allows food to be taken in and out of each storage chamber 27.

The housing 10 has a first partition 28 and a second partition 29. The first partition 28 and the second partition 29 are, for example, partition walls that are substantially horizontal to each other. The first partition 28 is located between the refrigerator compartment 27A and the vegetable compartment 27B, and partitions the refrigerator compartment 27A and the vegetable compartment 27B. For example, the first partition 28 forms the bottom wall of the refrigerator compartment 27A and the ceiling wall of the vegetable compartment 27B. On the other hand, the second partition 29 is located between the vegetable compartment 27B and the ice making chamber 27C and the small freezing chamber 27D, and partitions the vegetable compartment 27B from the ice making chamber 27C and the small freezing chamber 27D. .. For example, the second partition 29 forms the bottom wall of the vegetable compartment 27B and the ceiling walls of the ice making chamber 27C and the small freezing chamber 27D.

The openings of the plurality of storage chambers 27 are closed by a plurality of doors 11 so as to be openable and closable. As shown in FIG. 1, the plurality of doors 11 include, for example, a left refrigerating room door 11Aa, a right refrigerating room door 11Ab, a vegetable room door 11B, an ice making room door 11C, a small freezing room door 11D, and a main freezing room door 11E. include. The vegetable compartment door 11B closes the opening of the vegetable compartment 27B. The ice making chamber door 11C closes the opening of the ice making chamber 27C. The small freezer door 11D closes the opening of the small freezer 27D. The main freezing chamber door 11E closes the opening of the main freezing chamber 27E.

As shown in FIG. 1, the left refrigerating room door 11Aa and the right refrigerating room door 11Ab provided adjacent to each other on the left and right are, for example, double doors. The left refrigerating room door 11Aa and the right refrigerating room door 11Ab are each rotatably supported by the housing 10 by hinges (not shown).
An operation unit such as an operation panel may be provided on at least one surface of the left refrigerating room door 11Aa and the right refrigerating room door 11Ab.

The vegetable room door 11B, the ice making room door 11C, the small freezing room door 11D, and the main freezing room door 11E are, for example, pull-out doors. The vegetable room door 11B, the ice making room door 11C, the small freezing room door 11D, and the main freezing room door 11E are supported with respect to the housing 10 by a rail (not shown) provided between the vegetable room door 11B and the main freezing room door 11E. ing.

As shown in FIG. 2, a plurality of shelves 12 are provided in the refrigerator compartment 27A.
The plurality of containers 13 include a refrigerating room container 13A, a first vegetable room container 13Ba, a second vegetable room container 13Bb, an ice making room container 13C, a small freezing room container 13D, a first main freezing room container 13Ea, and a second main freezing room container. Includes 13Eb and door containers 13Fa, 13Fb, 13Fc.
The refrigerating chamber container 13A is provided in the refrigerating chamber 27A, and is, for example, a chilled chamber container. The refrigerator compartment container 13A has a box shape that opens upward. Above the refrigerating chamber container 13A, a partition plate 13Aa covering the opening of the refrigerating chamber container 13A is arranged. The refrigerating chamber container 13A is housed so as to be movable in the front-rear direction in the space between the partition plate 13Aa and the first partition portion 28. The detailed configuration of the refrigerating chamber container 13A will be described later.
The first vegetable compartment container 13Ba and the second vegetable compartment container 13Bb are provided in the vegetable compartment 27B. The ice making chamber container (not shown) is provided in the ice making chamber 27C. The small freezer container 13D is provided in the small freezer 27D. The first main freezing chamber container 13Ea and the second main freezing chamber container 13Eb are provided in the main freezing chamber 27E.
The door containers 13Fa, 13Fb, and 13Fc are detachably attached to the rear side of the right refrigerating chamber door 11Ab. The door containers 13Fa, 13Fb, and 13Fc are arranged in this order from the upper side to the lower side. The shapes of the door containers 13Fa, 13Fb, and 13Fc are all box-shaped with an upward opening.

The flow path forming component 14 is arranged in the housing 10. The flow path forming component 14 includes a first duct component 31, a second duct component 32, and a return flow path cover 33.

The first duct component 31 is provided along the rear wall 25 of the housing 10 and extends in the vertical direction. The first duct component 31 extends from the rear of the lower end of the vegetable compartment 27B to the rear of the upper end of the refrigerator compartment 27A, for example. A first duct space D1, which is a passage through which cold air (air) flows, is formed between the first duct component 31 and the rear wall 25 of the housing 10. The first duct component 31 has a plurality of cold air outlets 31a and a cold air return port 31b. The plurality of cold air outlets 31a are provided at a plurality of height positions in the refrigerating chamber 27A. The cold air return port 31b is provided at the lower end of the first duct component 31 and is located behind the vegetable compartment 27B.

The second duct component 32 is provided along the rear wall 25 of the housing 10 and extends in the vertical direction. The second duct component 32 extends from the rear of the main freezing chamber 27E to the rear of the upper ends of the ice making chamber 27C and the small freezing chamber 27D, for example. A second duct space D2, which is a passage through which cold air (air) flows, is formed between the second duct component 32 and the rear wall 25 of the housing 10. The second duct component 32 has a cold air outlet 32a and a cold air return port 32b. The cold air outlet 32a is provided at the upper end of the second duct component 32 and is located behind the ice making chamber 27C and the small freezing chamber 27D. The cold air return port 32b is provided at the lower end of the second duct component 32 and is located behind the main freezing chamber 27E.

The return flow path cover 33 is arranged in, for example, the main freezing chamber 27E. The return flow path cover 33 is provided at the rear portion in the housing 10. The return flow path cover 33 includes a wall portion 33a located at a height between the cold air outlet 32a and the cold air return port 32b of the second duct component 32 in the vertical direction of the refrigerator 1. The return flow path cover 33 divides the rear portion of the housing 10 into a cold air flow path f1 and a return flow path f2 behind the main freezing chamber 27E.
The cold air flow path f1 communicates with the cold air outlet 32a of the second duct component 32 at the rear portion of the housing 10. The cold air flow path f1 is a flow path through which the cold air cooled by the second cooler 46 described later and blown out from the cold air outlet 32a passes. For example, the cold air flow path f1 is a flow path through which cold air passes from the cold air outlet 32a toward the main freezing chamber 27E.
The return flow path f2 communicates with the cold air return port 32b of the second duct component 32 at the rear portion of the housing 10. The return flow path f2 is a flow path in which cold air that has passed through one or more of the ice making chamber 27C, the small freezing chamber 27D, and the main freezing chamber 27E returns to the second cooler 46. At least a part of the return flow path f2 is located below the cold air flow path f1.
In the return flow path cover 33, cold air flows in opposite directions on the first surface side facing the cold air flow path f1 and the second surface side facing the return flow path f2.

The first cooling unit 15 is a cooling unit that cools the refrigerator compartment 27A and the vegetable compartment 27B. The first cooling unit 15 includes, for example, a first cooler 41, a first defrost water receiver 42, and a first fan 43.

The first cooler 41 is arranged in the first duct space D1. The first cooler 41 is arranged at a height corresponding to the lower end portion of the refrigerating chamber 27A, for example. The refrigerant compressed by the compressor 17, which will be described later, is supplied to the first cooler 41. The first cooler 41 cools the cold air flowing through the first duct space D1.

The first defrost water receiver 42 is arranged in the first duct space D1 and is provided below the first cooler 41. The first defrost water receiver 42 receives the defrost water generated by the first cooler 41 (the defrost water dripping from the first cooler 41). The defrost water received by the first defrost water receiver 42 is guided to the evaporating dish 18 via the drain pipe portion 44 provided on the rear wall 25 of the housing 10.

The first fan 43 is provided, for example, at the cold air return port 31b of the first duct component 31. When the first fan 43 is driven, the air in the vegetable compartment 27B flows into the first duct space D1 from the cold air return port 31b. The air that has flowed into the first duct space D1 flows upward in the first duct space D1 and is cooled by the first cooler 41. The cold air cooled by the first cooler 41 is blown out to the refrigerating chamber 27A from the plurality of cold air outlets 31a. The cold air blown out to the refrigerating chamber 27A flows through the refrigerating chamber 27A, passes through the vegetable compartment 27B, and returns to the cold air return port 31b again. As a result, the cold air flowing through the refrigerating chamber 27A and the vegetable compartment 27B is circulated in the refrigerator 1, and the refrigerating chamber 27A and the vegetable compartment 27B are cooled.

The second cooling unit 16 is a cooling unit that cools the ice making chamber 27C, the small freezing chamber 27D, and the vegetable compartment 27B. The second cooling unit 16 includes, for example, a second cooler 46, a second defrost water receiver 47, and a second fan 48.

The second cooler 46 is arranged in the second duct space D2. The second cooler 46 is arranged at a height corresponding to, for example, the small freezer chamber 27D. A refrigerant compressed by a compressor 17, which will be described later, is supplied to the second cooler 46. The second cooler 46 cools the cold air flowing through the second duct space D2.

The second defrost water receiver 47 is arranged in the second duct space D2 and is provided below the second cooler 46. The second defrost water receiver 47 receives the defrost water generated by the second cooler 46 (the defrost water dropped from the second cooler 46). The defrost water received by the second defrost water receiver 47 is guided to the evaporating dish 18 via the drain pipe portion 44 provided on the rear wall 25 of the housing 10.

The second fan 48 is provided, for example, at the cold air return port 32b of the second duct component 32. When the second fan 48 is driven, the air in the main freezing chamber 27E flows into the second duct space D2 from the cold air return port 32b. The air that has flowed into the second duct space D2 flows upward in the second duct space D2 and is cooled by the second cooler 46. The cold air cooled by the second cooler 46 flows into the ice making chamber 27C, the small freezing chamber 27D, and the main freezing chamber 27E from the cold air outlet 32a. The cold air that has flowed into the ice making chamber 27C and the small freezing chamber 27D flows through the ice making chamber 27C and the small freezing chamber 27D, and then returns to the cold air return port 32b via the main freezing chamber 27E. As a result, the cold air flowing in the ice making chamber 27C, the small freezing chamber 27D, and the main freezing chamber 27E is circulated in the refrigerator 1, and the ice making chamber 27C, the small freezing chamber 27D, and the main freezing chamber 27E are cooled.

The compressor 17 is provided, for example, in the machine room at the bottom of the refrigerator 1. The compressor 17 compresses the refrigerant gas used for cooling the storage chamber 27. The refrigerant gas compressed by the compressor 17 is sent to the first cooler 41 and the second cooler 46 via a heat radiating pipe (not shown) or the like.

The evaporating dish 18 is provided, for example, in the machine room at the bottom of the refrigerator 1. The evaporating dish 18 is heated by, for example, the heat generated by the compressor 17 to evaporate the defrosted water led from the first defrosted water receiver 42 and the second defrosted water receiver 47 to the evaporating dish 18.

The circuit board 19 includes a power supply circuit board and a control circuit board.
The power supply circuit board is electrically connected to a commercial power source (AC 100V) which is an external power source. The power supply circuit board converts the electric power supplied from the commercial power source into DC electric power having a voltage suitable for driving each electric component contained in the refrigerator 1. The power supply circuit board supplies the converted DC power to each electric component of the refrigerator 1. The power supply circuit board is an example of a heat-generating component that generates a large amount of heat in the refrigerator 1.
The control circuit board controls the entire refrigerator 1 in an integrated manner. The control circuit board is electrically connected to the power supply circuit board and each electric component in the refrigerator 1 via wiring (not shown).
For example, the control circuit board controls the drive of the first fan 43, the second fan 48, and the compressor 17 based on the detection results of the temperature sensors provided in the refrigerating chamber 27A, the main freezing chamber 27E, and the like.
For example, the control circuit board controls the operation of the refrigerator 1 in response to an operation input through an operation unit provided on the right refrigerating room door 11Ab, for example.

The circuit board 19 is provided on, for example, the upper wall 21 of the housing 10. In the present embodiment, the upper surface of the upper wall 21 of the housing 10 has a recess 84 recessed downward. The circuit board 19 is arranged in the recess 84.
A circuit accommodating component 85 and a cover 86 are arranged on the recess 84.
The circuit accommodating component 85 is formed in a bowl shape along the recess 84. The circuit accommodating component 85 is fixed to the outer box 52 by a fastening member (not shown).
The cover 86 covers the circuit board 19 housed in the circuit housing component 85 from above.

Next, the detailed configuration of the housing 10 will be described.
As shown in FIG. 2, the housing 10 has, for example, an inner box 51, an outer box 52, and a heat insulating portion 53.

The inner box 51 is a member that forms the inner surface of the housing 10, and is made of, for example, a synthetic resin. The inner box 51 may form the entire inner surface of the housing 10, or may form only a part of the inner surface. The inner box 51 is a member exposed to the storage chamber 27 (refrigerator chamber 27A, vegetable compartment 27B, ice making chamber 27C, small freezer compartment 27D, and main freezer compartment 27E).

The outer box 52 is a member that forms the outer surface of the housing 10, and is made of metal, for example. The outer box 52 may form the entire outer surface of the housing 10, or may form only a part of the outer box 52. The outer box 52 is formed to be one size larger than the inner box 51, and is arranged outside the inner box 51. The outer box 52 is a member exposed to the outside of the refrigerator 1. Between the inner box 51 and the outer box 52, there is a space provided with a heat insulating portion 53, which will be described later.

The heat insulating portion 53 is provided between the inner box 51 and the outer box 52 to enhance the heat insulating property of the housing 10. The configuration of the heat insulating portion 53 is not particularly limited.
For example, the heat insulating portion 53 includes a vacuum heat insulating material (VIP: Vacuum Insulation Panel) 61, a foam heat insulating material 62, and a sheet-shaped heat insulating material 63.

The vacuum heat insulating material 61 is, for example, a heat insulating material containing an exterior body and a core material housed in the exterior body, and the inside of the exterior body is decompressed. The core material is, for example, a fiber material such as glass wool or a porous body such as foam.

The foamed heat insulating material 62 is a foamed heat insulating material such as urethane foam. The foamed heat insulating material 62 is formed by being injected between the inner box 51 and the outer box 52 in a fluid state, being injected between the inner box 51 and the outer box 52, and then foaming.

The sheet-shaped heat insulating material 63 contains a dry gel formed of a fine porous body, and is a heat insulating material formed in a sheet shape. In the present embodiment, it is formed of the same material as the transparent heat insulating material 73 described later used for the left refrigerating chamber door 11Aa and the right refrigerating chamber door 11Ab. However, the sheet-shaped heat insulating material 63 does not have to be transparent.
Since the sheet-shaped heat insulating material 63 is particularly excellent in heat insulating properties as described later, it has the same heat insulating performance as the vacuum heat insulating material 61 and the foam heat insulating material 62 even if the layer thickness is thinner than that of the vacuum heat insulating material 61 and the foam heat insulating material 62.

Next, the arrangement of the vacuum heat insulating material 61, the foam heat insulating material 62, and the plurality of sheet-shaped heat insulating materials 63 will be described with an example of the upper wall 21. However, the configuration of the upper wall 21 described below may be applied to any wall portion of the housing 10. That is, the configuration of the upper wall 21 may be applied to the first partition portion 28, the second partition portion 29, the lower wall 22, the left side wall 23, the right side wall 24, and the rear wall 25.

The outer shape of the upper wall 21 in the vertical direction is formed by the upper surface portion 51a of the inner box 51 and the upper surface portion 52a of the outer box 52.
The front surface portion 51b forming the front surface of the upper wall 21 forms a part of the front surface of the housing 10 surrounding the opening of the refrigerating chamber 27A.
The upper surface portion 51a of the inner box 51 extends in the + Y direction as a whole from the lower end of the front surface portion 51b extending in the + Z direction at the end portion of the upper wall 21 in the −Y direction. However, the upper surface portion 51a is bent stepwise in the intermediate portion in the depth direction. Therefore, in the upper surface portion 51a, the first inner wall portion 51a1, the inclined inner wall portion 51a2, and the second inner wall portion 51a3 are connected in this order from the end portion in the −Y direction. The inclined inner wall portion 51a2 is inclined downward from the end portion of the first inner wall portion 51a1 in the + Y direction in the + Y direction. The second inner wall portion 51a3 extends horizontally from the end portion of the inclined inner wall portion 51a2 in the + Y direction.

The upper surface portion 52a of the outer box 52b extends in the + Y direction as a whole from the upper end of the front surface portion 51b. However, the upper surface portion 52a is bent stepwise in the intermediate portion closer to the + Y direction than the inclined inner wall portion 51a2 in the depth direction. Therefore, in the upper surface portion 52a, the first outer wall portion 52a1, the inclined outer wall portion 52a2, and the second outer wall portion 52a3 are connected in this order from the end portion in the −Y direction.
The end portion of the first outer wall portion 52a1 in the + Y direction extends further in the + Y direction than the inclined inner wall portion 51a2. Therefore, when viewed from above, the first outer wall portion 52a1 covers a part of the first inner wall portion 51a1, the inclined inner wall portion 51a2, and the second inner wall portion 51a3.
The inclined outer wall portion 52a2 has the same inclination and depth direction width as the inclined inner wall portion 51a2. The second outer wall portion 52a3 extends horizontally from the end portion of the inclined outer wall portion 52a2 in the + Y direction.
With such a configuration, the inclined outer wall portion 52a2 and the second outer wall portion 52a3 of the upper surface portion 52a are lower than the first outer wall portion 52a1. The recess 84 described above is formed on the inclined outer wall portion 52a2 and the second outer wall portion 52a3.

The vacuum heat insulating material 61, the foam heat insulating material 62, and the sheet-shaped heat insulating material 63 are all arranged between the upper surface portion 51a of the inner box 51 and the upper surface portion 52a of the outer box 52.
In the example shown in FIG. 2, the vacuum heat insulating material 61 is arranged along the lower surface of the first outer wall portion 52a1. The method of fixing the vacuum heat insulating material 61 to the first outer wall portion 52a is not particularly limited. For example, the vacuum heat insulating material 61 may be fixed to the lower surface of the first outer wall portion 52a1 by an adhesive layer containing an adhesive or an adhesive tape. For example, the vacuum heat insulating material 61 may be fixed to the first outer wall portion 52a1 by a fastening member or a support structure (not shown).

In the example shown in FIG. 2, at least a part of the sheet-shaped heat insulating material 63 is arranged between the vacuum heat insulating material 61 and the upper surface portion 51a of the inner box 51. The sheet-shaped heat insulating material 63 is arranged along the upper surface of the upper surface portion 51a and the lower surfaces of the inclined outer wall portion 52a2 and the second outer wall portion 52a3 on the upper surface portion 52a. The sheet-shaped heat insulating material 63 may be fixed to the upper surface of the upper surface portion 51a, the inclined outer wall portion 52a2, and the lower surface of the second outer wall portion 52a3 by, for example, an adhesive layer containing an adhesive or an adhesive tape.
As described above, the sheet-shaped heat insulating material 63 is arranged along the wall surface shape having a bent portion such as a step, for example.

In the upper wall 21, the foam heat insulating material 62 is filled in the space inside the upper wall 21 except for the vacuum heat insulating material 61 and the sheet-shaped heat insulating material 63. For example, at least a part of the foam heat insulating material 62 is filled between the vacuum heat insulating material 61 and the sheet-shaped heat insulating material 63. In the region where the vacuum heat insulating material 61 is not arranged, the foam heat insulating material 62 is filled between the sheet-shaped heat insulating materials 63 facing each other, or between the lower surface of the upper surface portion 52a and the sheet-shaped heat insulating material 63. ..

As described above, the example in which the vacuum heat insulating material 61, the foam heat insulating material 62, and the sheet-shaped heat insulating material 63 are arranged inside the upper wall 21 has been described. However, if the heat insulating performance required for the upper wall 21 is obtained, any one or two of the vacuum heat insulating material 61, the foam heat insulating material 62, and the sheet-shaped heat insulating material 63 may not be arranged.

The sheet-shaped heat insulating material 63 may be attached to an appropriate member that preferably has heat insulating performance. For example, the sheet-shaped heat insulating material 63 may be used as a part of the flow path forming component 14. In the example shown in FIG. 2, for example, the surface of the first duct component 31 facing the first duct space D1, the surface of the return flow path cover 33 facing the cold air flow path f1, and the lower surface of the first defrost water receiver 42. And it is arranged on the lower surface of the second defrost water receiver 47 and the like. In this case, the sheet-like heat insulating material 63 may be fixed to each surface by including, for example, an adhesive layer containing an adhesive or an adhesive tape.

Next, the detailed configuration of the refrigerating chamber container 13A will be described. The refrigerating chamber container 13A is an example of a container in which the entire refrigerating chamber container 13A is housed in the refrigerating chamber 27A.
FIG. 3 is a perspective view showing a refrigerator compartment container according to the first embodiment.
In the following description, unless otherwise specified, the positional relationship in which the refrigerating chamber container 13A is arranged in the refrigerating chamber 27A will be described.

As shown in FIG. 3, the refrigerating chamber container 13A includes a first bottom plate portion 13a, a second bottom plate portion 13b, a right side plate portion 13d, a left side plate portion 13e, a front side plate portion 13c, a rear side plate portion 13f, and a handle portion 13g. Have.
The first bottom plate portion 13a is a flat plate extending in the horizontal direction. The shape of the first bottom plate portion 13a in a plan view (-Z direction view) is substantially rectangular.
The second bottom plate portion 13b is a flat plate extending in an oblique direction toward the + Z direction as it advances in the + Y direction from the end in the + Y direction of the first bottom plate portion 13a. The shape of the second bottom plate portion 13b in a plan view is substantially rectangular.

In the following, the first bottom plate portion 13a and the second bottom plate portion 13b, which are bent plates connected to each other, may be collectively referred to as a bottom plate portion 13ab.
The outer shape of the bottom plate portion 13ab in a plan view is substantially rectangular. Here, "the plan view shape of the bottom plate portion 13ab is substantially rectangular" means that, for example, the plan view outer shape of the bottom plate portion 13ab may be a strict rectangle whose four sides are straight lines, or is strict. It means that the shape may be similar to a rectangle. For example, as a shape similar to a strict rectangle, at least one of the four corners of the strict rectangle is rounded in an arc shape that is convex outward, and at least one of the four sides of the strict rectangle is outward or Inwardly curved shapes and combinations of these shapes are included.
In the following, an example will be described in which the outer peripheral portion of the bottom plate portion 13ab has a shape in which four corners of a strict rectangle are rounded in an arc shape that is convex outward in a plan view.

The right side plate portion 13d extends upward from the ends of the first bottom plate portion 13a and the second bottom plate portion 13b in the + X direction.
The left side plate portion 13e extends upward from the end portions in the −X direction of the first bottom plate portion 13a and the second bottom plate portion 13b. For example, the upper end of the left side plate portion 13e is located on the same horizontal plane as the upper end of the right side plate portion 13d.
The front plate portion 13c extends upward from the end portion in the −Y direction of the first bottom plate portion 13a.
The rear side plate portion 13f extends upward from the end portion in the + Y direction of the second bottom plate portion 13b.
The upper ends of the front plate portion 13c and the rear plate portion 13f are located on the same horizontal plane as the upper ends of the right plate portion 13d.

The right side plate portion 13d, the front side plate portion 13c, the right side plate portion 13d, and the rear side plate portion 13f are connected to each other at positions adjacent to each other in the circumferential direction of the outer peripheral portions of the first bottom plate portion 13a and the second bottom plate portion 13b. Therefore, the right side plate portion 13d, the front side plate portion 13c, the right side plate portion 13d, and the rear side plate portion 13f are curved in the portion extending from the rounded outer peripheral portion of the bottom plate portion 13ab in the same manner as the outer peripheral portion. The right side plate portion 13d, the front side plate portion 13c, the right side plate portion 13d, and the rear side plate portion 13f are flat plates at a portion extending from the linear outer peripheral portion of the bottom plate portion 13ab.
For example, the end in the + X direction of the front plate portion 13c and the end in the −Y direction of the right plate portion 13d are connected by being curved in an arc shape in a plan view to form a corner portion C1 extending in the vertical direction. There is. Similarly, the + Y direction end portion of the right side plate portion 13d and the + X direction end portion of the rear side plate portion 13f form a corner portion C2 extending in the vertical direction. The end portion in the −X direction of the rear side plate portion 13f and the end portion in the −Y direction of the left plate portion 13e form a corner portion C3 extending in the vertical direction. The end portion in the −Y direction of the left side plate portion 13e and the end portion in the −X direction of the front side plate portion 13c form a corner portion C4 extending in the vertical direction.

The handle portion 13g is provided so that the user can hold the refrigerating chamber container 13A in his / her hand when moving it in the depth direction. The shape of the handle portion 13g is not particularly limited as long as the user can handle the refrigerating chamber container 13A in and out of the refrigerating chamber 27A.
In the example shown in FIG. 3, the handle portion 13g is formed so as to project in the −Y direction from the upper end portion of the front side plate portion 13c. For example, the handle portion 13g has a top plate 13gd, a front side plate 13ga, a right side plate 13gb, and a left side plate 13gc.
The top plate 13gd extends in the −Y direction from the upper end of the front plate portion 13c. In the example shown in FIG. 3, the upper surface of the top plate 13gd is arranged at the same height as the upper end of the front plate portion 13c.
The front side plate 13ga extends downward from the end of the top plate 13gd in the −Y direction.
The right side plate 13gb closes the ends of the front side plate 13ga and the top plate 13gd in the + X direction. The right side plate 13gb has a flat plate shape parallel to the right side plate portion 13d.
The left side plate 13gc closes the ends of the front side plate 13ga and the top plate 13gd in the −X direction. The left plate 13 gc has a flat plate shape parallel to the left plate portion 13e.
With such a configuration, a groove portion 13h that opens downward is formed between the front side plate portion 13c and the front side plate 13ga.

The size of each portion of the handle portion 13g is not particularly limited as long as at least the tip portion of the user's finger can be inserted into the groove portion 13h. For example, in the example shown in FIG. 3, the depth of the groove portion 13h is about one-fourth of the height of the refrigerating chamber container 13A. For example, the width of the groove portion 13h in the depth direction is about 2 cm to 4 cm.

Next, the cross-sectional structure of the refrigerating chamber container 13A will be described.
FIG. 4 is a cross-sectional view taken along the line F4-F4 in FIG. FIG. 5 is a cross-sectional view taken along the line F5-F5 in FIG. FIG. 6 is a cross-sectional view taken along the line F6-F6 in FIG.

As shown in FIGS. 4 to 6, the refrigerating chamber container 13A includes a container body 71, a transparent heat insulating material 74A (second heat insulating material, see FIG. 4), cushioning materials 75a and 75b, and a transparent heat insulating material 74B (second heat insulating material, It has a transparent heat insulating material 73 (first heat insulating material, see FIG. 3), and a lid material 72.

The container body 71 forms the outer shape of the refrigerator compartment container 13A. The container body 71 has an outer shell member 71A and an inner shell member 71B in addition to the handle portion 13 g described above.

The outer member 71A forms the outer surface So of the refrigerating chamber container 13A. The outer member 71A has a lower surface portion 71Ab (single layer portion) forming the lower surface of the refrigerating chamber container 13A and a side surface portion 71Aa forming the outer surface of the refrigerating chamber container 13A.
The lower surface portion 71Ab is a single plate member forming the bottom plate portion 13ab. Therefore, the lower surface portion 71Ab forms the outer surface So and the inner surface Si of the bottom plate portion 13ab.
The side surface portion 71Aa is a plate member extending upward from the outer peripheral portion of the lower surface portion 71Ab. The plate thickness of the side surface portion 71Aa is thinner than the thickness of the front side plate portion 13c, the right side plate portion 13d, the left side plate portion 13e, and the rear side plate portion 13f, and each of them forms an outer surface So.

The outer member 71A has at least a part of the first transparent region T1 through which visible light can be transmitted in the thickness direction. The first transparent region T1 may have a light transmittance such that the user can see the contents in the refrigerating chamber container 13A through the outer member 71A. For example, the first transparent region T1 may be formed with a pattern that does not make the user's visibility too low, for example, a dot pattern.
The first transparent region T1 is formed at least on the side surface portion 71Aa of the outer member 71A so that the contents in the refrigerating chamber container 13A can be observed from the outside. In the examples shown in FIGS. 4 and 5, the entire side surface portion 71Aa has the first transparent region T1.
However, the first transparent region T1 may be provided on the side surface portion 71Aa at a portion that is easy for the user to observe from the front side of the refrigerator 1. For example, the first transparent region T1 may be formed in at least a part of the lower surface portion 71Ab of the front side plate portion 13c, the right side plate portion 13d, and the left side plate portion 13e. For example, the first transparent region T1 may not be provided in the lower portion of the front side plate portion 13c, the right side plate portion 13d, the rear portion of the left side plate portion 13e, or the like.
For example, the first transparent region T1 may also be provided on the lower surface portion 71Ab. In the examples shown in FIGS. 4 and 5, the entire lower surface portion 71Ab forms the first transparent region T1.

The inner shell member 71B is arranged inside the refrigerating chamber container 13A with a gap from the outer shell member 71A. The inner shell member 71B is a plate member extending upward from the lower surface portion 71Ab of the outer shell member 71A.
The inner shell member 71B is arranged in the horizontal direction so as to face each lower surface portion 71Ab in the front side plate portion 13c, the right side plate portion 13d, the left side plate portion 13e, and the rear side plate portion 13f. As a result, a gap E is formed between the side surface portion 71Aa of the inner shell member 71B and the inner shell member 71B.
The size of the gap E in the horizontal direction may vary in the circumferential direction and the height direction. However, in the examples shown in FIGS. 4 and 5, the size of the gap E is substantially constant in the circumferential direction and the height direction. Therefore, as shown in FIG. 6, the inner shell member 71B is arranged inside the side surface portion 71Aa in a shape along the inner surface of the lower surface portion 71Ab. For example, the corner portions C1, C2, C3, and C4 are curved along the curvature of these outer surface So.
As described above, the gap E forms a substantially rectangular annular groove along the outer peripheral portion in the plan view of the bottom plate portion 13ab.

The inner shell member 71B does not have to form the inner surface Si of the refrigerating chamber container 13A. However, in the present embodiment, the inner shell member 71B forms the inner surface Si in the horizontal direction in the refrigerating chamber container 13A.
The inner shell member 71B has a second transparent region T2 through which visible light can be transmitted, at least at a portion facing the first transparent region T1.
The second transparent region T2 may have a light transmittance such that the user can see the contents in the refrigerating chamber container 13A through the inner member 71B. That is, the light transmittance of the first transparent region T1 is the same as that of the first transparent region T1. In the examples shown in FIGS. 4 and 5, the entire inner shell member 71B forms the second transparent region T2.

The material of the container body 71 is not particularly limited as long as at least the first transparent region T1 and the second transparent region T2 can transmit visible light. For example, as the material of the container body 71, glass, resin, or a composite thereof is used at least for the first transparent region T1 and the second transparent region T2. In the container body 71, glass, resin, metal, or a composite thereof may be used as the portions of the first transparent region T1 and the second transparent region T2.
The types of glass and resin are not particularly limited.
For example, when glass is used, float glass, tempered glass, laminated glass and the like may be used. The tempered glass may be air-cooled tempered glass or chemically tempered glass. When glass is used as the material of the container body 71, it has advantages that it is not easily scratched, has high transmittance, and is not easily deteriorated as compared with resin.
For example, when a resin is used, an acrylic resin, a polycarbonate resin, a polystyrene resin, or the like may be used. For example, when resin is used as the material of the container body 71, it has advantages that it is lighter, cheaper, easier to mold, and has lower thermal conductivity than glass.

The parts of the container body 71 other than the first transparent region T1 and the second transparent region T2 may be made of a material that does not sufficiently transmit visible light, or may be subjected to surface processing that does not sufficiently transmit visible light. For example, when a transparent material is used as the container body 71, a concave-convex shape, a coating layer, or the like that reduces light transmission is formed in the regions other than the first transparent region T1 and the second transparent region T2, if necessary. You may.
In the examples shown in FIGS. 4 to 6, the container body 71 is manufactured by a molded product made of a transparent resin material.

As shown in FIG. 4, the transparent heat insulating material 74A is arranged in the gap E between the outer shell member 71A (side surface portion 71Aa) and the inner shell member 71B facing each other in the depth direction. The transparent heat insulating material 74A fills the entire width of the gap E in the depth direction. However, cushioning materials 75a and 75b, which will be described later, are arranged at the upper and lower ends of the transparent heat insulating material 74A.
The transparent heat insulating material 74A may be, for example, granular or lumpy, or may be a plate that can be inserted into the gap E, as long as it can be embedded in the gap E. However, as the transparent heat insulating material 74A, a material having a high porosity is used in order to improve the heat insulating property. Therefore, when the transparent heat insulating material 74A is granular or lumpy, the individual granules or lumps may be crushed or crushed by the external force received at the time of filling. On the other hand, if the entire transparent heat insulating material 74A is formed in a plate shape in advance, even if the transparent heat insulating material 74A is damaged, it is limited to the outer peripheral portion such as the ridgeline and the corner portion of the plate.
Therefore, when the transparent heat insulating material 74A is embedded in the gap E, the possibility that the transparent heat insulating material 74B is damaged at the time of embedding is reduced. This facilitates the work of embedding the transparent heat insulating material 74A in the gap E.

FIG. 7 is a perspective view showing an example of the transparent heat insulating material in the first embodiment.
In the example shown in FIG. 7, the transparent heat insulating material 74A has a plate-like outer shape that can be inserted into the gap E in which the transparent heat insulating material 74A is arranged.
For example, the thickness of the transparent heat insulating material 74A is slightly thinner than the size of the gap E between the outer shell member 71A and the inner shell member 71B in the horizontal direction.
For example, the outer shape of the transparent heat insulating material 74A that intersects in the thickness direction is a rectangular shape surrounded by an upper surface 74Aa, a first side surface 74Ab, a lower surface 74Ac, and a second side surface 74Ad.
As shown in FIG. 6, the transparent heat insulating material 74A is arranged in each gap E of the front side plate portion 13c and the rear side plate portion 13f.
The transparent heat insulating material 74A in the front side plate portion 13c is inserted into the gap Ec formed between the flat side surface portion 71Aa and the inner shell member 71B. The distance between the first side surface 74Ab and the second side surface 74Ad is equal to the length in the lateral width direction (vertical direction in the drawing) of the side surface portion 71Aa and the inner shell member 71B forming the gap Ec. The distance between the upper surface 74Aa and the lower surface 74Ac is equal to the length of the side surface portion 71Aa and the inner shell member 71B forming the gap Ec in the vertical direction (vertical direction on the paper surface in the drawing).
The transparent heat insulating material 74A in the rear side plate portion 13f is inserted into the gap Ef formed between the flat side surface portion 71Aa and the inner shell member 71B. The outer shape of the transparent heat insulating material 74A in the rear side plate portion 13f is matched to the shape of the gap Ef formed between the flat side surface portion 71Aa and the inner shell member 71B, similarly to the transparent heat insulating material 74A in the front side plate portion 13c. ..
That is, in the present embodiment, as shown in FIG. 4, only the vertical dimension of each transparent heat insulating material 74A differs depending on the difference in depth between the gap Ec and the gap Ef.

The transparent heat insulating material 74A in the present embodiment is formed of, for example, a heat insulating material G containing airgel, xerogel, or cryogel (hereinafter, referred to as “specific heat insulating material G” for convenience of explanation).
Here, "including one or more of airgel, xerogel, or cryogel" is used to mean "including one or more of airgel, xerogel, or cryogel". Airgel, xerogel, and cryogel are low-density structures (dry gels), respectively. The "airgel" is, for example, a porous substance (porous body) in which the solvent contained in the gel is replaced with a gas by supercritical drying. The "xerogel" is a porous substance in which the solvent contained in the gel is replaced with a gas by evaporation drying. The "cryogel" is a porous substance in which the solvent contained in the gel is replaced with a gas by freeze-drying.

It should be noted that some airgels can be dried without using supercritical drying by introducing, for example, a specific element. The term "airgel" as used herein also includes such an airgel. That is, the term "airgel" as used herein is not limited to those manufactured using supercritical drying, and broadly means various materials distributed as "airgel". As an airgel that does not require supercritical drying, for example, an organic-inorganic hybrid airgel in which an organic chain such as a methyl group is introduced into a molecular network of silicon dioxide is known, such as PMSQ (CH ₃ SiO _1.5 ) airgel. There is. However, these are just examples.

Airgel, xerogel, and cryogel are ultra-low density dry porous bodies having a large number of fine pores (voids) and an extremely high porosity (porosity of 90% or more, preferably 95% or more). The density of the dry porous body is, for example, 150 mg / cm ³ or less. Airgels, xerogels, and cryogels have, for example, a structure in which silicon dioxide and the like are bonded in a bead shape, and have a large number of nanometer-level (for example, 100 nm or less, preferably 2 nm to 50 nm) voids. Since it has nanometer-level pores and a lattice structure in this way, the mean free path of gas molecules can be reduced, the heat conduction between gas molecules is very small even at normal pressure, and the thermal conductivity is very small. It is a thing. For example, airgels, xerogels, and cryogels have fine voids that are smaller than the mean free path of air.

The airgel, xerogel, and cryogel may be an inorganic aerogel composed of metal oxides such as silicon, aluminum, iron, copper, zirconium, hafnium, magnesium, and yttrium, an inorganic xerogel, or an inorganic cryogel, for example, a silica airgel containing silicon dioxide. , Silica xerogel, or silica cryogel. For example, silica-based dry gels such as silica airgel, silica xerogel, and silica cryogel _{have a structure in which silica (SiO 2} ) fine particles having a diameter of 10 nm to 20 nm are connected, and have pores having a width of several tens of nm. Silica-based dry gel has a very low thermal conductivity (0.012 W / (m ·) because the heat conduction of the solid part is extremely small due to its low density and the movement of air inside the pores is restricted. K) to 0.02 W / (m · K)). Further, the silica-based dry gel has high light transmittance because the silica fine particles and pores are smaller than the wavelength of visible light and do not scatter visible light.
For example, the material constituting the airgel, the xerogel, and the cryogel may be carbon or the like.

In airgels, xerogels, and cryogels, by selecting a material, it is possible to give appropriate properties (for example, elasticity, flexibility, etc.) according to the material. For example, by using a resin such as polypropylene as a material for airgel, xerogel, and cryogel, the aerogel, xerogel, and cryogel can be provided with high elasticity or flexibility.

The airgel, xerogel, and cryogel may each form the specific heat insulating material G by themselves.
Airgel, xerogel, and cryogel may each form a specific heat insulating material G which is a composite heat insulating material by immersing another material (for example, a fiber structure) in the state of a precursor. In this case, the fibrous structure functions as a reinforcing material for reinforcing the dry gel or a support for supporting the dry gel.
FIG. 8 is a schematic view showing the configuration of such a composite heat insulating material. In the specific heat insulating material G shown in FIG. 8, a dry gel g containing airgel, xerogel, or cryogel is formed in the gaps of the fiber structure h1 (reinforcing material).
As the fiber structure h1, a flexible woven fabric, knitted fabric, non-woven fabric or the like is used in order to obtain a flexible composite heat insulating material, and more preferably felt or blanket (soft brushed material) is used. As the material of the fiber structure h1, a transparent fiber material is used. For example, as the fiber structure h1, organic fibers such as polyester fibers, inorganic fibers such as glass fibers, organic and inorganic composite fibers and the like can be used.
The fiber structure h1 is an example of a transparent reinforcing material that reinforces the transparent heat insulating material.

The fiber structure may be, for example, a natural polymer chitosan. In this case, the specific heat insulating material G contains a three-dimensional network structure of hydrophobicized fine chitosan fibers and has an ultra-high porosity (96 to 97% of the volume is void). Such a specific heat insulating material G has water repellency because the moisture resistance, which is a problem of a material made of polysaccharide nanofibers, is enhanced while maintaining a homogeneous nanostructure of hydrophilic chitosan airgel by hydrophobization.

Since the dried gel g has a high porosity, it is fragile to an external force. Therefore, the support made of the fiber structure h1 as described above is formed in a plate shape or a sheet shape, so that the strength against an external force is improved.
Since the specific heat insulating material G used as the transparent heat insulating material 74A is sandwiched between the outer shell member 71A and the inner shell member 71B, the strength of the specific heat insulating material G alone is damaged by the external force received during the insertion work into the gap E. It is enough if it does not. Therefore, the reinforcing material in the specific heat insulating material G does not have to have a dense structure like the fiber structure h1.
FIG. 9 is a partial cross-sectional view of a perspective view schematically showing an example of a composite heat insulating material. As shown in FIG. 9, the specific heat insulating material G may include a reinforcing net h2 and a dry gel g.
The reinforcing net h2 is, for example, a lattice formed of a rod-shaped body thinner than the thickness of the transparent heat insulating material 73. In the example shown in FIG. 9, the reinforcing net h2 is drawn in a rectangular lattice shape made of round bars, but the shape of the reinforcing net h2 is not limited to this. For example, the grid shape of the reinforcing net h2 may be a hexagonal grid shape, a mesh shape, or the like. For example, the rod-shaped body of the reinforcing net h2 may be a square rod-shaped body or a linear body. For example, the reinforcing net h2 may have a net shape woven with a transparent linear body. For example, the reinforcing net h2 may be a sheet having a large number of through holes.

The material of the reinforcing net h2 is not particularly limited as long as it has a high visible light transmittance and the interface with the specific heat insulating material G is difficult to see. For example, as the material of the reinforcing net h2, a transparent resin, glass, or the like may be used.
For example, as the material of the reinforcing net h2, the same material as the material of the dried gel g may be used. In this case, the visibility of the boundary due to the difference in refractive index between the reinforcing net h2 and the dried gel g is suppressed.
However, if the inside of the refrigerator 1 is not too difficult to see, the reinforcing net h2 and the dried gel g may have a transmittance difference or a refractive index difference such that the interface between them can be seen. In this case, since the pattern corresponding to the shape of the reinforcing net h2 can be seen, the design of the refrigerating chamber container 13A can be improved.
Further, even when the reinforcing net h2 is visible, the reinforcing net h2 has, for example, a coarser gap such as a mesh than the fiber structure h1. Therefore, since the reinforcing net h2 is superior in light transmission to the fiber structure h1, the specific heat insulating material G including the reinforcing net h2 has improved visibility as compared with the specific heat insulating material G including the fiber structure h1.
The reinforcing net h2 may be arranged in one layer in the thickness direction of the transparent heat insulating material 73, or may be arranged in two or more layers.
The reinforcing net h2 is an example of a transparent reinforcing material that reinforces the transparent heat insulating material.

The specific heat insulating material G may be, for example, a heat insulating material in which one or more dry gels selected from the group consisting of silica airgel, xerogel, and cryogel and a polypropylene foam are composited.
Polypropylene foam is an example of a transparent reinforcing material in a transparent heat insulating material.

The thermal conductivity of the specific heat insulating material G is higher than the thermal conductivity of the vacuum heat insulating material 61 (an example of a general vacuum heat insulating material), but the thermal conductivity of the foam heat insulating material 62 (an example of a general foam heat insulating material). Lower than the rate. That is, the heat insulating property of the specific heat insulating material G is not as good as the heat insulating property of the vacuum heat insulating material 61, but is superior to the heat insulating property of the foam heat insulating material 62. The thermal conductivity of the specific heat insulating material G is, for example, 0.010 W / (m · K) to 0.015 W / (m · K). The thermal conductivity of the vacuum heat insulating material 61 is, for example, 0.003 W / (m · K) to 0.005 W / (m · K). The thermal conductivity of the foamed heat insulating material 62 is, for example, 0.020 W / (m · K) to 0.022 W / (m · K). However, these numerical values are merely examples.
Further, comparing the thermal conductivity of the specific heat insulating material G with the materials that can be used for the outer member 71A and the inner member 71B, for example, the resin material such as polystyrene is 0.10 W / (m · K) to 0.14 W. / (M · K). For example, the amount of glass is about 0.55 W / (m · K) to 0.75 W / (m · K). Therefore, the thermal conductivity of the specific heat insulating material G is lower than the thermal conductivity of the resin material and glass suitable for the outer shell member 71A and the inner shell member 71B.

When the specific heat insulating material G has flexibility, the flexibility (bendability) of the specific heat insulating material G is higher than, for example, the flexibility of the vacuum heat insulating material 61 and higher than the flexibility of the foam heat insulating material 62. Further, when the specific heat insulating material G has elasticity, the elasticity of the specific heat insulating material G is higher than, for example, the elasticity of the vacuum heat insulating material 61 (substantially close to inelasticity), and the elasticity of the foamed heat insulating material 62 (substantially). (Close to inelastic) higher than.

Any of the configurations of the specific heat insulating material G described above can be applied to the sheet-shaped heat insulating material 63 described above. However, since the sheet-shaped heat insulating material 63 does not have to be transparent, the reinforcing material may be opaque when, for example, a reinforcing material such as a fiber structure h1 and a reinforcing net h2 is included.

As described above, the specific heat insulating material G has excellent light transmission of visible light. Therefore, even if the outer member 71A forming the first transparent region T1 and the inner member 71B forming the second transparent region T2 are arranged when viewed from the horizontal direction, the light transmission in the thickness direction is maintained. There is no loss.
For example, in the present embodiment, the side surface portion 71Aa, the transparent heat insulating material 74A, and the inner shell member 71B form a transparent front side plate portion 13c and a right side plate portion 13d having a three-layer structure.

Next, the cushioning materials 75a and 75b will be described. The cushioning materials 75a and 75b absorb the external force acting on the outer peripheral portion of the transparent heat insulating material 74A in the direction intersecting the thickness direction.
As shown in FIG. 4, the cushioning material 75a is arranged between the outer shell member 71A and the inner shell member 71B so as to cover the upper end of the transparent heat insulating material 74A. The cushioning material 75b is arranged between the outer shell member 71A and the inner shell member 71B so as to cover the lower end of the transparent heat insulating material 74A.
The cushioning materials 75a and 75b may be arranged apart from each other in the longitudinal direction of the upper end and the lower end of the transparent heat insulating material 74A. However, in the present embodiment, the transparent heat insulating material 74A is arranged so as to cover the entire upper end and lower end.

The materials of the cushioning materials 75a and 75b are not particularly limited as long as they can absorb an external force. For example, the materials of the cushioning materials 75a and 75b may be materials that absorb impact due to deformation. For example, the materials of the cushioning materials 75a and 75b may be a deformable foam, a porous body, a fiber structure, or the like. The deformation of the cushioning materials 75a and 75b is not limited to elastic deformation, but it is preferable that the cushioning materials 75a and 75b have a repulsive force that does not rattle in the vertical direction within the gap E.
For example, examples of the materials of the cushioning materials 75a and 75b include foamed elastomers, elastomers, and foamed resins.
The cushioning materials 75a and 75b are more preferably formed of a material having a low thermal conductivity. For example, as the cushioning materials 75a and 75b, the same heat insulating material as the foamed heat insulating material 62 may be used.

The materials of the cushioning materials 75a and 75b are more preferably transparent.
However, the cushioning materials 75a and 75b may be opaque materials as long as the area of the transparent heat insulating material 74A seen from the + Y direction is not too narrow. For example, when the cushioning materials 75a and 75b are made of an opaque material and the first transparent region T1 is formed on a part of the side surface portions 71Aa of the front side plate portion 13c and the rear side plate portion 13f, the cushioning materials 75a and 75b may be formed. It is more preferable that the transparent region T1 is arranged outside the first transparent region T1 when viewed from the horizontal direction.

The vertical thicknesses of the cushioning materials 75a and 75b can be set to an appropriate thickness capable of reducing the external force acting on the transparent heat insulating material 74A. The thinner the cushioning materials 75a and 75b in the vertical direction is, the more preferable it is, in that the transparent regions of the front side plate portion 13c and the rear side plate portion 13f can be widened so that the user can easily see the inside of the refrigerating chamber container 13A.
The thinner the cushioning materials 75a and 75b in the vertical direction, the wider the space occupied by the transparent heat insulating material 74A in the gap E between the front side plate portion 13c and the rear side plate portion 13f. Therefore, the heat insulating performance of the refrigerator container 13A is improved.

For example, the cushioning materials 75a and 75b may be formed of a sheet member.
For example, the cushioning materials 75a and 75b may be solidified or foamed after the liquid material is applied to the upper and lower ends of the transparent heat insulating material 74A or the groove bottom of the gap E.

The transparent heat insulating material 74B is a member formed in the same manner as the transparent heat insulating material 74A except that the transparent heat insulating material 74B is arranged in the gap E between the outer shell member 71A (side surface portion 71Aa) and the inner shell member 71B facing each other in the lateral width direction. Is.
As shown in FIGS. 5 and 6, the transparent heat insulating material 74B is arranged in the gaps Ed and Ee in the right side plate portion 13d and the left side plate portion 13e, respectively. Here, the gaps Ed and Ee are gaps E formed between the flat plate-shaped side surface portion 71Aa and the inner shell member 71B, respectively.
For example, when the transparent heat insulating material 74B is formed in a plate shape, each transparent heat insulating material 74B has an outer shape that follows the shapes of the gaps Ed and Ee.

FIG. 10 is a perspective view showing an example of the transparent heat insulating material in the first embodiment.
As shown in FIG. 10, when the transparent heat insulating material 74B is formed in a plate shape, the outer shapes intersecting in the thickness direction of the transparent heat insulating material 74B are the upper surface 74Aa, the first side surface 74Ab, and the lower surface 74Ac of the transparent heat insulating material 74A. And, instead of the second side surface 74Ad, it has an upper surface 74Ba, a first side surface 74Bb, a lower surface 74Bc, and a second side surface 74Bd.
The upper surface 74Ba is the same as the upper surface 74Ba except that the lengths of the gaps Ed and Ee in the depth direction are adjusted.
The first side surface 74Bb is a plane extending in the vertical direction like the first side surface 74Ab.
The lower surface 74Bc has a first lower surface 74Bca and a second lower surface 74Bcc parallel to each other, corresponding to the bottom plate portion 13ab being bent into the first bottom plate portion 13a and the second bottom plate portion 13b.
The second side surface 74Bd is a plane parallel to the first side surface 74Ba. However, the second side surface 74Bd is shorter in the vertical direction than the first side surface 74Ba, corresponding to the rear side plate portion 13f being shorter in the vertical direction than the front side plate portion 13c.
As described above, the plate-shaped transparent heat insulating material 74B has a pentagonal outer shape when viewed in the thickness direction.

As shown in FIG. 5, cushioning materials 75a and 75b similar to those described above are also arranged at the upper and lower ends of the transparent heat insulating material 74B arranged in the gaps Ed and Ee, respectively. For example, the cushioning material 75b is arranged along the bottoms of the gaps Ed and Ee along the bending of the bottom plate portion 13ab.
The cushioning materials 75a and 75b covering the transparent heat insulating material 74B may be different members from the cushioning materials 75a and 75b covering the transparent heat insulating material 74A, or may be a continuous member.

As shown in FIG. 6, the transparent heat insulating material 73 is arranged in the gap E between the transparent heat insulating materials 74A and 74B adjacent to each other in the circumferential direction of the gap E, respectively. The transparent heat insulating material 73 is a member formed in the same manner as the transparent heat insulating material 74A except that the arrangement positions in the gap E are different.
The transparent heat insulating material 73 is arranged in the gap E including at least the gaps E1, E2, E3, and E4 at the corners C1, C2, C3, and C4 of the gap E. For example, the end portion of each transparent heat insulating material 73 may extend to the gaps Ec, Ed, Ee, and Ef in the circumferential direction.
In the following, an example will be described in which each transparent heat insulating material 73 is arranged in the gaps E1, E2, E3, and E4, respectively.

For example, the transparent heat insulating material 73 may be formed in advance in a shape corresponding to the curved shape of the gaps E1, E2, E3, and E4 at the arrangement positions, similarly to the transparent heat insulating materials 74A and 74B. In this case, for example, the reinforcing materials such as the above-mentioned fiber structure h1 and reinforcing net h2 are curved into a shape corresponding to the curved shape of the gaps E1, E2, E3, and E4, and then the precursors of airgel, xerogel, and cryogel. The specific heat insulating material G, which is a composite heat insulating material, may be formed by immersing the material in the heat insulating material G.

However, the specific heat insulating material G used for the transparent heat insulating material 73 may be arranged in the gaps E1, E2, E3, and E4 by bending the flexible specific heat insulating material G.
FIG. 11 is a perspective view showing an example of the first heat insulating material in the first embodiment.
The transparent heat insulating material 73 shown in FIG. 11 has an upper surface 73a, a first side surface 73b, a lower surface 73c, and a second side surface 73d on an outer peripheral portion intersecting the thickness direction. The transparent heat insulating material 73 can be bent between the first side surface 73b and the second side surface 73d and inserted into the gaps E1, E2, E3, and E4 from the flat plate-like state indicated by the alternate long and short dash line.
In FIG. 11, the lower surface 73c is drawn parallel to the upper surface 73a. For example, in the transparent heat insulating material 73 arranged in the gaps E3 and E4, the lower surface 73c is an inclined surface along the inclination of the second bottom plate portion 13b. It is said that.
As the specific heat insulating material G having flexibility used for the transparent heat insulating material 73, for example, by using a resin such as polypropylene as a material for airgel, xerogel, and cryogel, the aerogel, xerogel, and cryogel have high elasticity or flexibility. A specific heat insulating material G having a property can be mentioned.

In the example shown in FIG. 6, the transparent heat insulating material 73 is arranged between the transparent heat insulating materials 74A and 74B adjacent to each other in the circumferential direction with almost no gap.
When both the transparent heat insulating material 73 and the transparent heat insulating materials 74A and 74B are formed of the non-deformable specific heat insulating material G, the end faces adjacent to each other may be scraped off when the transparent heat insulating materials 73, 74A and 74B are inserted. There may be a gap between the end faces.
However, for example, when the transparent heat insulating material 73 is formed of the specific heat insulating material G having elasticity as described above, the transparent heat insulating material 73 can be deformed in the circumferential direction at the time of insertion. Therefore, the transparent heat insulating material 73 can be adjacent to the transparent heat insulating materials 74A and 74B without damaging the end faces of the transparent heat insulating materials 74A and 74B. The elastic transparent heat insulating material 73 also has a function as a cushioning material that absorbs an external force acting on the side surfaces of the transparent heat insulating materials 74A and 74B.

Although not shown, cushioning materials 75a and 75b are arranged at the upper and lower ends of the transparent heat insulating material 73, respectively, as in the transparent heat insulating materials 74A and 74B.
The cushioning materials 75a and 75b covering the transparent heat insulating material 73 may be different members from the cushioning materials 75a and 75b covering the transparent heat insulating material 74A, or may be continuous members.
Although not shown, a cushioning material made of the same material as the cushioning material 75a is arranged between the transparent heat insulating material 73 and the transparent heat insulating material 74A and between the transparent heat insulating material 73 and the transparent heat insulating material 74B. You may.

As shown in FIGS. 4 and 5, the lid member 72 is a member that closes the upper end of the gap E. The structure of the lid material 72 is not particularly limited as long as the transparent heat insulating materials 73, 74A, and 74B can be confined in the gap E.
In the examples shown in FIGS. 4 and 5, the lid member 72 is a plate-shaped or sheet-shaped member joined to the upper end of the container body 71 and the upper surface of the cushioning material 75a. Such a lid material 72 may be joined to the upper end of the container body 71 and the upper surface of the cushioning material 75a by, for example, an adhesive or an adhesive.
For example, a protrusion that fits into the opening of the gap E may be formed on the lower surface of the lid member 72.
For example, the lid material 72 may be composed of a single member having a substantially rectangular shape that covers the entire upper end of the container body 71, or may be composed of a plurality of members.
Examples of the material of the lid material 72 include an appropriate resin. The lid material 72 may be made of a transparent material or may be made of an opaque material such as colored.

According to the refrigerating chamber container 13A described above, the front side plate portion 13c, the right side plate portion 13d, and the left side plate portion 13e are inside the outer member 71A and any of the transparent heat insulating materials 73, 74A, 74B in the thickness direction. It has a three-layer structure in which the container member 71B and the container member 71B are laminated. Since the transparent heat insulating materials 73, 74A, and 74B are made of the specific heat insulating material G having a lower thermal conductivity than the outer shell member 71A and the inner shell member 71B, the front side plate portion 13c, the right side plate portion 13d, and the left side plate portion 13e are Has high heat insulation performance.
That is, since the specific heat insulating material G is a porous body containing airgel, xerogel, or cryogel, it has a porosity of, for example, 90% or more as described above. As a result, the thermal conductivity is lower than that of the heat insulating materials such as the vacuum heat insulating material 61 and the foam heat insulating material 62. As a result, the front side plate portion 13c, the right side plate portion 13d, and the left side plate portion 13e have high heat insulating properties, so that the heat insulating properties of the refrigerator 1 are improved.
As a result, heat transfer due to heat conduction through the front side plate portion 13c, the right side plate portion 13d, and the left side plate portion 13e is suppressed, so that the temperature change in the refrigerating chamber container 13A is suppressed. As a result, the temperature change in the refrigerating chamber 27A including the refrigerating chamber container 13A can be reduced.
For example, when there is a difference between the cooling target temperature inside the refrigerating chamber container 13A and the cooling target temperature outside the refrigerating chamber container 13A in the refrigerating chamber 27A, the respective temperature changes are reduced.
For example, when the left refrigerating room door 11Aa or the right refrigerating room door 11Ab is opened, the heat outside the refrigerator is not easily transferred to the inside of the refrigerating room container 13A. The temperature rise in the container 13A is suppressed. Therefore, the temperature change in the refrigerating chamber container 13A when the left refrigerating chamber door 11Aa or the right refrigerating chamber door 11Ab is opened is reduced. As a result, the temperature change of the refrigerating chamber 27A as a whole is reduced.

Further, the transparent heat insulating materials 73, 74A, 74B are arranged between the first transparent region T1 of the outer shell member 71A facing each other and the second transparent region T2 of the outer shell member 71A in the thickness direction. Therefore, at least a part of the front side plate portion 13c, the right side plate portion 13d, and the left side plate portion 13e of the refrigerating chamber container 13A is formed with a transparent region in which the contents can be visually recognized when viewed from the horizontal direction.
As a result, the user can observe the contents of the refrigerator compartment container 13A without pulling the refrigerator compartment container 13A out of the refrigerator 1. For example, when a transparent region is formed on the front plate portion 13c, the contents of the refrigerating chamber container 13A can be observed without pulling out the refrigerating chamber container 13A from the inside of the refrigerating chamber 27A. For example, when a transparent region is formed on the right side plate portion 13d or the left side plate portion 13e, the refrigerating chamber container 13A is pulled out to a position where the transparent region can be seen, so that the refrigerating chamber is not completely pulled out from the refrigerating chamber 27A. The contents of the container 13A can be observed.
As a result, the number of times the user pulls out the refrigerating chamber container 13A and the amount of each pulling out are reduced, so that the amount of warm air entering or leaking into the refrigerating chamber container 13A is reduced. In this respect as well, the temperature inside the refrigerator container 13A can be stabilized.

According to the refrigerating chamber container 13A, the transparent heat insulating materials 73, 74A, 74B are formed between the outer shell member 71A and the inner shell member 71B, and are arranged inside the gap E closed by the lid member 72. With such a configuration, the transparent heat insulating materials 73, 74A and 74B are not exposed to the outside. Therefore, as the transparent heat insulating materials 73, 74A and 74B, a specific heat insulating material G which has a high porosity and is liable to become brittle can be used. can. Therefore, good heat insulating performance can be obtained even if the thickness of the front side plate portion 13c, the right side plate portion 13d, and the left side plate portion 13e is thin. As a result, the capacity of the refrigerator compartment container 13A can be increased.

According to the refrigerating chamber container 13A, cushioning materials 75a and 75b are arranged at the upper and lower ends of the transparent heat insulating materials 73, 74A and 74B, respectively. Therefore, when the transparent heat insulating materials 73, 74A, 74B are inserted into the gap E, and after being inserted into the gap E, the upper and lower ends of the transparent heat insulating materials 73, 74A, 74B are passed by the cushioning materials 75a, 75b. External force is absorbed. As a result, the transparent heat insulating materials 73, 74A, and 74B are less likely to be damaged by an external force. For example, since the transparent heat insulating materials 73, 74A and 74B are suppressed from being crushed and cracked, it is easy to maintain the heat insulating performance of the transparent heat insulating materials 73, 74A and 74B.

According to the above-mentioned example of the refrigerating chamber container 13A, the transparent heat insulating material 73 arranged at the corners C1, C2, C3, and C4 is formed of the specific heat insulating material G having flexibility. In this case, the transparent heat insulating material 73 is an example of the first heat insulating material having flexibility that can be deformed along the curvature at the corner portion. Further, the transparent heat insulating materials 74A and 74B are examples of the second heat insulating material having lower flexibility than the first heat insulating material.
According to such a configuration, for example, the transparent heat insulating material 73 can be easily inserted into the gap E, so that the manufacturing cost can be reduced.
For example, even when the outer shape of the refrigerating chamber container 13A has various corners and curved portions, the specific heat insulating material G can be easily arranged. As a result, the degree of freedom in designing the refrigerator compartment container 13A is improved.

According to the refrigerating chamber container 13A, the bottom plate portion 13ab is composed of an outer shell member 71A (lower surface portion 71Ab). That is, the lower surface portion 71Ab is an example of a single-layer portion in which the outer shell member forms the inner surface of the container.
In this case, since the bottom plate portion 13ab is a single-layer portion, it can be formed thinner than the front plate portion 13c and the like, so that the volume of the refrigerating chamber container 13A can be increased.
Further, in this case, the bottom plate portion 13ab has lower heat insulating performance than the front side plate portion 13c, the right side plate portion 13d, the left side plate portion 13e, and the rear side plate portion 13f. However, since the bottom plate portion 13ab is placed on the first partition portion 28, heat conduction is suppressed according to the heat insulating performance of the first partition portion 28. For example, by using a heat insulating wall such as the upper wall 21 as the first partition portion 28, heat conduction through the bottom plate portion 13ab can be suppressed.
However, if necessary, it is also possible to suppress the temperature fluctuation of the refrigerating chamber container 13A by utilizing the heat conduction in the bottom plate portion 13ab. For example, when the refrigerating chamber container 13A is used as a chilled chamber whose temperature can be changed, it is necessary to quickly control the temperature of the refrigerating chamber container 13A. In this case, if the bottom plate portion 13ab is easy to conduct heat, the temperature inside the refrigerating chamber container 13A can be controlled by the heat conduction from the bottom plate portion 13ab.

As described above, the refrigerator 1 of the present embodiment is a refrigerating chamber container including transparent heat insulating materials 74A, 74B, 73 arranged in the gap E between the outer member 71A and the inner member 71B that transmit visible light. It has 13A. According to the present embodiment, it is possible to provide the refrigerator 1 capable of reducing the temperature fluctuation of the refrigerator compartment 27A.

(Second embodiment)
Next, the second embodiment will be described.
As shown in FIGS. 1 to 3, the refrigerator 1A (see FIGS. 1 and 2) of the second embodiment replaces the refrigerator container 13A of the first embodiment with the refrigerator container 113A (see FIGS. 3 and 2). , Container).
The refrigerating chamber container 113A has substantially the same outer shape as the refrigerating chamber container 13A, and the cross-sectional structure is different from that of the refrigerating chamber container 13A. The refrigerating chamber container 113A is an example of a container in which the entire refrigerating chamber container 113A is housed in the refrigerating chamber 27A, similarly to the refrigerating chamber container 13A.
Unless otherwise specified, the configurations other than those described below are the same as those in the first embodiment.

FIG. 12 is a cross-sectional view showing a refrigerator compartment container in the refrigerator of the second embodiment. FIG. 12 is a cross-sectional view taken along the line F12-F12 in FIG.
As shown in FIG. 12, the refrigerating chamber container 113A has a bottom plate portion 113ab instead of the bottom plate portion 13ab of the refrigerating chamber container 13A.
The bottom plate portion 113ab is different from the bottom plate portion 13ab in that it has a three-layer structure similar to that of the front plate portion 13c and the like. The bottom plate portion 113ab is bent obliquely upward from the horizontal direction at the intermediate portion in the depth direction, as in the bottom plate portion 13ab. Therefore, the bottom plate portion 113ab is formed with a corner portion C12 extending in the lateral width direction in the intermediate portion in the depth direction.

The refrigerating chamber container 13A has a container body 171 instead of the container body 71.
The container body 171 is arranged inside the outer shell member 171A forming the same outer surface So as the container body 71 and the outer shell member 171A with a gap from the outer shell member 171A, and forms the inner surface Si of the container body 171. It has a member 171B and a member 171B.
In the gap E between the outer member 171A and the inner member 171B, a spacer that keeps a distance from each other or a rib having a spacer function may be arranged.

In the front side plate portion 13c and the rear side plate portion 13f, the transparent heat insulating material 74A and the cushioning material 75a are arranged between the outer shell member 171A and the inner shell member 171B in the same manner as in the first embodiment. Although not shown, in the right side plate portion 13d and the left side plate portion 13e, the transparent heat insulating material 74B and the cushioning material 75a are arranged between the outer shell member 171A and the inner shell member 171B in the same manner as in the first embodiment. Has been done.

In the bottom plate portion 113ab, between the outer shell member 171A and the inner shell member 171B, a transparent heat insulating material 173 (first heat insulating material) made of the same specific heat insulating material G as the transparent heat insulating material 73 and the same as the transparent heat insulating material 74A. A transparent heat insulating material 174 (second heat insulating material) made of the specific heat insulating material G is sandwiched between the two.
The transparent heat insulating material 173 includes a gap E in the corner portion C11 where the front side plate portion 13c and the bottom plate portion 113ab are connected, a gap E in the above-mentioned corner portion C12, and a corner portion where the bottom plate portion 113ab and the rear side plate portion 13f are connected. They are arranged in the gap E in C13, respectively.
Each of the transparent heat insulating materials 173 is curved along the curves of the corner portions C11, C12, and C13.
Each of the transparent heat insulating materials 173 at the corners C11 and C13 is in contact with the lower end of the respective transparent heat insulating material 74A. Each of these transparent heat insulating materials 173 has a cushioning material function similar to that of the cushioning material 75b in the first embodiment.
Although not particularly shown, the right side plate portion 13d and the left side plate portion 13e have a three-layer structure similar to that of the first embodiment. Although not particularly shown, a transparent heat insulating material 173 similar to the corner portions C11 and C13 is arranged at each corner portion where the right side plate portion 13d and the left side plate portion 13e and the bottom plate portion 113ab are connected.

In order to manufacture such a refrigerating chamber container 113A, for example, after arranging the transparent heat insulating materials 173 and 84 on the bottom surface of the outer shell member 171A, the inner shell member 171B is arranged inside the outer shell member 171A. After that, the transparent heat insulating materials 73, 74A, 74B, and the cushioning material 75a are arranged between the side surface of the inner shell member 171B and the side surface of the outer shell member 171A in the same manner as in the first embodiment. After that, the lid material 72 is joined to the upper end of the container body 171 in the same manner as in the first embodiment.

According to the refrigerating chamber container 113A of the present embodiment, the transparent heat insulating materials 173 and 84 are arranged on the bottom plate portion 113ab in addition to the front side plate portion 13c, the right side plate portion 13d, the left side plate portion 13e, and the rear side plate portion 13f. Therefore, the heat insulating performance of the bottom plate portion 113ab is improved.
According to this embodiment, it is possible to provide a refrigerator 1A capable of reducing temperature fluctuations in the refrigerator compartment 27A.

(Third Embodiment)
Next, a third embodiment will be described.
As shown in FIG. 1, the refrigerator 1B of the third embodiment has an ice making chamber door 211C (container) and an ice making chamber instead of the ice making chamber door 11C and the ice making chamber container 13C of the ice making chamber 27C of the first embodiment. It has a container 213C (container).
Unless otherwise specified, the configurations other than those described below are the same as those in the first embodiment.

FIG. 13 is a perspective view showing a container in the refrigerator of the third embodiment. FIG. 14 is a cross-sectional view taken along the line F14-F14 in FIG.
As shown in FIG. 13, the ice making chamber container 213C is a box-shaped container that opens upward. The ice making chamber container 213C is arranged in the ice making chamber 27C (see FIG. 1) in the storage chamber 27 of the refrigerator 1B. Inside the ice-making chamber container 213C, for example, ice that has already been made is arranged.
The ice making chamber container 213C has a bottom plate portion 213c, a right side plate portion 213d, a left side plate portion 213e, a rear side plate portion 213f, and an ice making chamber door 211C.

The bottom plate portion 213a is a flat plate extending in the horizontal direction. The shape of the bottom plate portion 213a in a plan view is substantially rectangular.
The right side plate portion 213d extends upward from the end portion of the bottom plate portion 213a in the + X direction.
The left plate portion 213e extends upward from the end in the −X direction of the bottom plate portion 213a. The upper end of the left plate portion 213e is located on the same horizontal plane as the upper end of the right plate portion 213d, for example.
The rear plate portion 213f extends upward from the end in the + Y direction of the bottom plate portion 213a. The upper end of the rear side plate portion 13f is located on the same horizontal plane as the upper end of the right side plate portion 13d, for example.

The ice making chamber door 211C is a plate member connected to each end in the −Y direction in the bottom plate portion 213a, the right plate portion 213d, and the left plate portion 213e, and extends along the vertical plane along the width direction. The ice making chamber door 211C, together with the bottom plate portion 213a, the right side plate portion 213d, and the left side plate portion 213e, forms the outer surface So and the inner surface Si of the ice making chamber container 213C.
The outer shape of the ice making chamber door 211C seen from the + Y direction is a rectangular shape including the bottom plate portion 213a, the right side plate portion 213d, and the left side plate portion 213e inside, and is larger than the opening of the ice making chamber 27C in the −Y direction.
On the outer peripheral portion of the ice making chamber door 211C, a gasket 55 extending in a rectangular shape along the outer shape of the ice making chamber door 211C is attached to the end surface in the + Y direction.
The gasket 55 comes into contact with the front end surface of the housing 10 (see FIG. 1) in the ice making chamber 27C to prevent leakage of cold air in the ice making chamber 27C.

As shown in FIG. 14, the cross-sectional structure of the ice making chamber container 213C is the first except that the bottom plate portion 213a has a flat plate shape and the ice making chamber door 211C is provided instead of the front plate portion 13c. It is substantially the same as the refrigerating chamber container 13A in the embodiment. That is, the ice making chamber door 211C forming a part of the ice making chamber container 213C is arranged outside the ice making chamber 27C. Therefore, the ice making chamber container 213C is an example of a container in which a part thereof is arranged in the ice making chamber 27C.
The ice making chamber container 213C has a container body 271, a transparent heat insulating material 74A, a transparent heat insulating material 73 (not shown), a frame member 280, cushioning materials 275, 75a, 75b, and a lid material 72.

The container body 271 forms the outer shape of the ice making chamber container 213C. The container body 271 has an outer shell member 271A and an inner shell member 271B.

The outer member 271A forms the outer surface So of the ice making chamber container 213C. The outer member 271A has a lower surface portion 271Ab, a side surface portion 271Ac, a door inner surface portion 271Ad, and a front surface member 271Aa.
The lower surface portion 271Ab forms the bottom surface portion 213a.
The side surface portion 271Ac extends in the + Z direction from the end portions in the + X direction, the −X direction, and the + Y direction on the bottom surface portion 213a. The side surface portion 271Ac forms the outer surface So of the right side plate portion 213d, the left side plate portion 213e, and the rear side plate portion 213f.
The door inner surface portion 271Ad includes a flat surface portion extending in the −Z direction from the end portion in the −Y direction on the lower surface portion 271Ab and a flat surface portion extending outward from the side surface portion 271A in the lateral width direction from the end portion in the −Y direction on the side surface portion 271A. ,including. When viewed from the + Y direction, the door inner surface portion 271Ad extends to the same range as the outer shape of the front member 271Aa described later.

The front member 271Aa is a plate member that forms the outer surface So, which is the front surface of the ice making chamber door 211C. The front member 271Aa may be a curved plate or a flat plate. In the examples shown in FIGS. 13 and 14, the front member 271Aa is a flat plate.
The front member 271Aa is arranged apart from the door inner surface portion 271Ad and the door inner surface portion 271Ba of the inner shell member 271B described later in the −Y direction.

The outer member 271A has a first transparent region T1 at least in a part thereof as in the first embodiment. In the examples shown in FIGS. 13 and 14, the entire outer member 271A forms the first transparent region T1.
As the material of the outer member 271A, the same material as the material suitable for the outer member 71A is used. For example, transparent glass may be used as the material of the front member 271Aa. For example, a transparent resin may be used as the material of the outer member 271A excluding the front member 271Aa.

The inner shell member 271B has a door inner surface portion 271Ba and a side surface portion 271Bb.
The door inner surface portion 271Ba is a flat surface portion arranged on the same plane as the door inner surface portion 271Ad in the outer member 271A. The door inner surface portion 271Ba extends in the + Z direction from the end portion of the lower surface portion 271Ab in the −Y direction. The end portion of the door inner surface portion 271Ba in the + Z direction extends in the same range as the end portion of the front member 271Aa in the + Z direction when viewed from the + Y direction.
In the example shown in FIG. 14, the door inner surface portions 271Ba and 271Ad are arranged in parallel with the front member 271Aa and form a flat surface portion having an outer shape similar to that of the front member 271Aa. At least between the door inner surface portion 271Ba and the front member 271Aa, a gap e1 for arranging the transparent heat insulating material 74A is formed.
However, in the example shown in FIG. 14, the gap e1 is also formed between the door inner surface portion 271Ad and the front member 271Aa.

The side surface portion 271Bb is arranged inside the side surface portion 271Ac of the outer member 271A, away from the side surface portion 271Ac. The side surface portion 271Bb projects in the + Z direction from the upper surface of the lower surface portion 271Ab of the outer member 271A. Therefore, a gap e2 for arranging the transparent heat insulating material 74A and the transparent heat insulating material 73 (not shown) is formed between the side surface portions 271Bb and 271Ac.

The inner shell member 271B has a second transparent region T2 at least in a part thereof as in the first embodiment. In the examples shown in FIGS. 13 and 14, the entire inner shell member 271B forms the second transparent region T2.
As the material of the inner shell member 271B, the same material as the material suitable for the inner shell member 71B is used. For example, a transparent resin may be used as the material of the inner shell member 271B.

In the gap e1 of the container body 271, the transparent heat insulating material 74A is arranged in a region covering substantially the entire front member 271Aa. In the container body 271, a transparent heat insulating material 74A is arranged in the gap e2 sandwiched between the flat plate-shaped outer member 271A and the inner member 271B, and the gap e2 sandwiched between the curved outer member 271A and the inner member 271B is provided. , A transparent heat insulating material 73 (not shown) is arranged as in the first embodiment.

The cushioning materials 75a and 75b in the present embodiment are arranged at the upper and lower ends of the transparent heat insulating material 74A arranged in the gap e2 and the transparent heat insulating material 73 (not shown) in the same manner as in the first embodiment. There is.

The frame member 280 covers the outer peripheral portions of the front member 271Aa and the door inner surface portions 271Ad and 271Ba from the front, the sides, and the rear. As shown in FIG. 13, the frame member 280 has a rectangular shape when viewed from the + Y direction. For example, the frame member 280 may be made of an opaque resin material, a metal material, or a composite material thereof.

The frame member 280 covers the transparent heat insulating material 74A arranged in the gap e1 from the side.
A cushioning material 275 made of the same material as the cushioning material 75a is arranged between the frame member 280 and the transparent heat insulating material 74A over the entire circumference.
Further, the frame member 280 covers the outer peripheral portion of the front member 271Aa from the + Y direction side, the upper end portion of the door inner surface portion 271Ba and the outer peripheral portion of the door inner surface portion 271Ad from the −Y direction side, respectively. Therefore, the frame member 280 forms a rectangular opening in the front member 271Aa inside the frame member 280 when viewed from the + Y direction.
Similarly, the frame member 280 forms a rectangular opening on the inner surface portions 271Ba and Ad of the door inside the frame member 280 when viewed from the + Y direction. Along the inside of this opening, the ends of the right side plate portion 213d, the left side plate portion 213e, and the rear side plate portion 213f in the −Y direction are connected to the door inner surface portions 271Ba and Ad.
The frame member 280 is joined to the outer peripheral portions of the front member 271Aa and the door inner surface portions 271Ad and 271Ba by, for example, an adhesive or an adhesive.
The gasket 55 is fixed to the frame member 280 in a state of being overlapped in the region of the end face in the + Y direction of the frame member 280 when viewed from the −Y direction.

With such a configuration, the front member 271Aa, the transparent heat insulating material 74A, and the door inner surface portion 271Ba between the first transparent region T1 and the second transparent region T2 transmit visible light. Therefore, when the ice making chamber container 213C is viewed from the front side, the inside of the ice making chamber container 213C can be seen through the first transparent region T1 inside the frame member 280 in the ice making chamber door 211C. At this time, since the gasket 55 is hidden by the frame member 280, it cannot be seen from the front side.
Further, the side surface portion 271Ac, the transparent heat insulating material 74A (73), and the side surface portion 271Bb between the first transparent region T1 and the second transparent region T2 transmit visible light. Therefore, when the ice making chamber container 213C is viewed from the side and the rear, the inside of the ice making chamber container 213C can be seen through the first transparent region T1 of the side plate portion 213d, the left side plate portion 213e, and the rear side plate portion 213f.
In the present embodiment, since the bottom plate portion 213c of the ice making chamber container 213C is also transparent, the inside of the ice making chamber container 213C can be seen from below the ice making chamber container 213C.

According to the refrigerating chamber container 213A of the present embodiment, the right side plate portion 213d, the left side plate portion 213e, and the rear side plate portion 213f have transparent heat insulating materials 74A and 73 made of the specific heat insulating material G as in the first embodiment. Have been placed. Therefore, the side plate portion 213d, the left side plate portion 213e, and the rear side plate portion 213f are transparent walls having the same three-layer structure as in the first embodiment.
Further, the ice making chamber door 211C forming the front surface of the refrigerating chamber container 213A is a transparent wall body having a three-layer structure of a front member 271Aa, a transparent heat insulating material 74A, and a door inner surface portion 271Ba.
As a result, the right side plate portion 213d, the left side plate portion 213e, the rear side plate portion 213f, and the ice making chamber door 211C have high heat insulating properties, so that the heat insulating properties of the ice making chamber container 213C and the ice making chamber 27C are improved.
In particular, since the ice making chamber door 211C forming the front surface of the ice making chamber container 213C also serves as a door covering the ice making chamber 27C, the volume of the ice making chamber container 213C is larger than that of the case where the door is different from the front surface of the ice making chamber container 213C. Becomes larger.
Further, since the right side plate portion 213d, the left side plate portion 213e, and the rear side plate portion 213f are transparent in the first transparent region T1, the user can pass through the right side plate portion 213d, the left side plate portion 213e, and the rear side plate portion 213f to the ice making chamber. The amount and condition of ice contained in the container 213C can be easily confirmed.
In particular, in the ice making chamber container 213C, since the ice making chamber door 211C is transparent, the user can check the amount and state of the ice contained in the ice making chamber container 213C without pulling out the ice making chamber container 213C to the outside of the ice making chamber 27C. Easy to check.
As a result, the number of times the user pulls out the ice making chamber container 213C to check the amount of ice is reduced, so that the amount of warm air entering or leaking cold air into the ice making chamber 27C is reduced. In this respect as well, the temperatures in the ice making chamber container 213C and the ice making chamber 27C can be stabilized.
When the number of times the ice making chamber container 213C is pulled out is reduced, the ice is less likely to be frosted, so that the transparency of the ice is improved.

As described above, the refrigerator 1B of the present embodiment is an ice making chamber container containing transparent heat insulating materials 74A and 73 arranged in the gaps e1 and e2 between the outer member 271A and the inner member 271B that transmit visible light. It has 213C. According to this embodiment, it is possible to provide the refrigerator 1B capable of reducing the temperature fluctuation of the ice making chamber 27C.

So far, some embodiments have been described. However, the embodiment is not limited to the above example. The embodiments described above can be implemented in combination with each other.

For example, in the first and second embodiments, it has been described that the refrigerating chamber container 13A has a transparent heat insulating material among the plurality of containers 13. However, the configuration of the refrigerating chamber containers 13A and 113A is such that other containers that are entirely arranged in the storage chamber 27, for example, the first vegetable compartment container 13Ba, the second vegetable compartment container 13Bb, the ice making chamber container 13C, and the small freezing chamber. The same may be applied to the container 13D, the first main freezer container 13Ea, the second main freezer container 13Eb, and the door containers 13Fa, 13Fb, 13Fc and the like.

For example, in the third embodiment, it has been described that the ice making chamber container 213C has a transparent heat insulating material in addition to the refrigerating chamber container 13A. However, the refrigerating chamber container 13A may be a box-shaped container having a single-layer structure made of a transparent resin material.
Further, the configuration of the container with a door having a transparent heat insulating material such as the ice making room container 213C is such that the doors arranged in another storage room 27, for example, the vegetable room 27B, the small freezing room 27D, and the main freezing room 27E. It may be applied to a container with a door.

For example, in each of the above embodiments, the container has been described as having a box shape with an opening on the upper side. However, the container may be a container with a lid. It is more preferable that the lid of the container with a lid has a three-layer structure of an outer shell member, a transparent heat insulating material, and an inner shell member. In this case, the inside of the container can be observed through the lid without opening the lid.

For example, in each of the above embodiments, the first heat insulating material is arranged in the gap between the corners, and the second heat insulating material is arranged in the flat gap. However, as described above, a transparent heat insulating material having no flexibility, which is molded in advance according to the curved shape, may be arranged at the corner portion. Further, a flexible first heat insulating material may be arranged in the flat plate-shaped gap. For example, the transparent heat insulating material may be composed only of the transparent heat insulating material having no flexibility, or may be composed only of the transparent heat insulating material having flexibility.

For example, in each of the above embodiments, it has been described that the cushioning material is arranged so as to cover the upper end and the lower end of the transparent heat insulating material. However, at least one of the upper and lower cushioning materials may be omitted if there is no risk of damage to the transparent insulation.

According to at least one embodiment described above, the refrigerator has a first transparent region through which visible light can pass, and is arranged with a gap inside the outer member that forms the outer surface of the container and the outer member. An inner member having a second transparent area capable of transmitting visible light at least in a portion facing the first transparent area and a transparent porous body are included in the gap between the outer member and the inner member. It has a transparent insulating material that is arranged. According to such a configuration, it is possible to provide a refrigerator capable of reducing the temperature fluctuation of the storage chamber.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

1,1A, 1B ... Refrigerator, 10 ... Housing (refrigerator body), 13 ... Multiple containers, 13A, 113A, 213A ... Refrigerator container (container), 13ab, 213a ... Bottom plate, 27 ... Multiple storage rooms, 27A ... Refrigerator room (storage room), 27C ... Ice making room (storage room), 71,171,271 ... Container body, 71A, 171A, 271A ... Outer member, 71B, 171B, 271B ... Inner member, 73,173 ... Transparent heat insulating material (first heat insulating material), 74A, 74B, 174 ... Transparent heat insulating material (second heat insulating material), 75a, 75b, 275 ... Buffer material, 211C ... Ice making chamber door (container), lower surface 71Ab (outer member) , Single layer part) 213C ... Ice making chamber container (container), 280 ... Frame member, C1, C2, C3, C4, C11, C12, C13 ... Corner part, E, E1, E2, E3, E4, Ed, Ef, e1, e2 ... Gap, g ... Dry gel, G ... Specific heat insulating material, h1 ... Fiber structure, h2 ... Reinforcing net, Si ... Inner surface, So ... Outer surface, T1 ... First transparent region, T2 ... Second transparent region

Claims (7)

Refrigerator body including storage room and
A box-shaped container in which at least a part is arranged in the storage chamber and
With
The container is
An outer member having a first transparent region through which visible light can pass and forming an outer surface of the container, and an outer member.
An inner member that is arranged with a gap inside the outer member and has a second transparent region that allows visible light to pass through at least in a portion facing the first transparent region.
A transparent heat insulating material containing a transparent porous body and arranged in the gap between the outer member and the inner member.
To prepare
refrigerator. The transparent heat insulating material has a lower thermal conductivity than the outer member and the inner member.
The refrigerator according to claim 1. The porous body comprises a dry gel containing an airgel, a xerogel, or a cryogel.
The refrigerator according to claim 1 or 2. The container is
The outer member comprises a single layer portion forming the inner surface of the container.
The refrigerator according to any one of claims 1 to 3. A cushioning material that absorbs an external force is arranged on the outer peripheral portion of the transparent heat insulating material in a direction intersecting the thickness direction of the transparent heat insulating material.
The refrigerator according to any one of claims 1 to 4. The container has an outer shell member and an inner shell member curved corners facing each other in the thickness direction.
The transparent heat insulating material is
A first heat insulating material having flexibility that can be deformed along the curvature at the corner portion,
A second heat insulating material having a lower flexibility than the first heat insulating material,
Have,
The first heat insulating material is arranged in the gap at the corner.
The refrigerator according to any one of claims 1 to 5. The transparent heat insulating material includes a transparent reinforcing material.
The refrigerator according to any one of claims 1 to 6.

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