JP6832877B2 - refrigerator - Google Patents

Description

The present invention relates to a method for manufacturing a refrigerator and a cold insulation device door.

In Patent Document 1, a groove having a U-shaped cross section is provided in a door frame 3 provided on the side circumference of the outer plate 2 to narrow the end portion of the outer plate (FIG. 2).

In Patent Document 2, the support portions 41 and 42 of the glass surface material 20 of the drawer type door 10a are fixed by using screws 39 (FIG. 2).

Japanese Unexamined Patent Publication No. 2011-69560 JP-A-2015-59712

In order to enhance the design of the door, for example, when a member having a design different from that of the outer panel of the door is provided, it is required to fix the member while maintaining the design. Patent Document 1 does not disclose any configuration when such a member is provided, and Patent Document 2 requires a tool such as a screw, and it takes time and effort to attach the member.

The first invention made in view of the above circumstances is
With the outer panel
A refrigerator including a frame member provided on the peripheral edge of the outer plate.
Has a decorative member
A foam heat insulating material is arranged between the decorative member and the frame member.

In addition, the second invention made in view of the above circumstances is
A step of preparing an outer plate and a frame member provided on the peripheral edge of the outer plate,
A step of providing a decorative member between the outer plate and the frame member,
The undiluted solution of the foamed heat insulating material is injected to foam the foamed heat insulating material between the decorative member and the frame member, and the outer plate, the frame member and the decorative member are attached to each other by the adhesive force of the foamed heat insulating material. It is a step to install and a method of manufacturing a cold insulation device door to have.

It is a front view of the refrigerator which concerns on embodiment of this invention. It is a perspective view which shows the pull-out type insulation door of the refrigerator of embodiment. FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG. An enlarged view of the assembly component of the upper frame member and the decorative member in FIG. 3a. It is an enlarged cross-sectional perspective view of the pull-out type heat insulating door of embodiment. It is sectional drawing of the main part with the decorative member of FIG. 4 removed. .. FIG. 3 is an enlarged cross-sectional view taken along the line BB of FIG. It is a rear view of the state which removed the inner plate of the pull-out type heat insulating door of an embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the present embodiment, the 6-door type refrigerator 1 will be described as an example, but the number of doors is not limited, and the refrigerator 1 may be applied to a type having 5 doors or less or a 1-door type. Further, in the following description, the direction when the refrigerator 1 is viewed from the front will be described as a reference. In addition, similar components are designated by the same reference numerals, and duplicate explanations are not repeated. In addition, the size and shape of the member may be deformed or exaggerated schematically for convenience of explanation.

≪Refrigerator≫
FIG. 1 is a front view of the refrigerator according to the present embodiment. Refrigerator 1 includes a refrigerating room 2, an ice making room 3, a switching room (upper freezing room, quick freezing room) 4, a lower freezing room 5 (drawing room, first storage room / hereinafter referred to as "freezing room 5"), and , A vegetable room 6 (drawing room, second storage room) is provided.

The refrigerator 1 has rotary (hinge type) heat insulating doors 2a and 2b for opening and closing the refrigerating chamber 2, a drawer type heat insulating door 3a for opening and closing the ice making room 3, and a drawer type heat insulating door for opening and closing the switching room 4. It is provided with 4a, a drawer-type heat insulating door 5a for opening and closing the freezer compartment 5, and a drawer-type heat insulating door 6a for opening and closing the vegetable compartment 6. Each storage chamber 2, 3, 4, 5, 6 is provided with a heat insulating box 9 having an opening as an entrance / exit for each storage chamber. Each opening can be opened and closed at each door 2a, 2b, 3a, 4a, 5a, 6a.

≪Drawer type insulation door≫
FIG. 2 is a perspective view showing a heat insulating door 5a as an example of a pull-out type heat insulating door of the refrigerator 1 of the present embodiment, and FIG. 3a is an enlarged cross-sectional view taken along the line AA of FIG. 2 which is a side sectional view of the heat insulating door 5a on the upper side. 3b is an enlarged view of the assembled component of the upper frame member 23 and the decorative member 25 in FIG. 3a, FIG. 4 is an enlarged cross-sectional perspective view of the pull-out type heat insulating door 5a of the present embodiment, and FIG. 5 is FIG. A cross-sectional perspective view of a main part in a state where the decorative member is removed, FIG. 6 is an enlarged cross-sectional view taken along the line BB of FIG.
FIG. 3 has a cross section at a location where the engagement hole 23h, which will be described later, is provided.

The drawer type heat insulating door 5a includes a door frame having an outer plate 10 located in the front, a frame member 21-24 provided on the side circumference of the outer plate 10, an inner plate 60 located in the rear, and an outer plate 10. It includes a door frame 21-24, a decorative member 25, and a vacuum heat insulating material 30 and a foam heat insulating material 50 arranged in a space 40 surrounded by an inner plate 60. The same configuration may be applied to other drawer-type heat insulating doors.

<Outer plate 10>
The outer plate 10 is a flat plate-shaped member provided as the front surface of the heat insulating door 5a. The outer plate 10 is made of, for example, rectangular, resin or glass and is transparent or translucent, and an opaque paint (not shown) or paint is applied to the rear surface side (that is, the surface on the side where the foam insulating material 50 is filled). A film (not shown) is attached.

<Door frame>
The door frame is a substantially square resin frame material provided on the peripheral edge of the outer plate 10. In the door frame, the left frame member 21, the right frame member 22, the upper frame member 23, and the lower frame member 24 are attached to the left side, the right side, the upper side, and the lower side of the outer plate 10, respectively, and the outer plate 10 It is connected around. The upper frame member 23 is formed with a pocket-shaped handle portion 23a on which a user can put his / her hand when opening / closing the door 5a. The handle portion 23a forms a concave space in a side sectional view of the heat insulating door 5a. The detailed structure of the upper frame member 23 will be described later.

The outer plate 10 and the frame members 21, 22, and 24 are each attached with an adhesive member (for example, an adhesive tape). The double-sided tape is attached to the tape attaching portions 21a, 22a, 24a (see FIG. 7) of the frame members 21, 22, and 24. The handle portion 23a and the decorative member 25 are not limited to the upper frame member 23, and may be provided on the frame members 21, 22, 24 in other directions. The outer panel of the frame member 21-24 in any direction in which the decorative member 25 is desired to be attached is provided by using the foamed heat insulating material 50 (preferably, the foamed heat insulating material 50 configured to be filled with high density as described later). The structure can be attached to 10. As the material of the frame member 21-24, for example, ABS resin having good adhesiveness to the foamed heat insulating material 50 (urethane) can be used.

A thin film-like shatterproof film 90 made of resin is arranged on the back surface of the outer plate 10. Examples of the material of the shatterproof film 90 include a polyester film (PET film). When a transparent anti-scattering film 90 is adopted, it is possible to obtain a decorative sheet with high design by printing on, for example, the back surface of the base material of the anti-scattering film 90. Further, the PET film is excellent in heat resistance and cold resistance, can protect the paint layer against the high temperature at the time of filling the foamed heat insulating material 50, and is less affected by the outside air temperature transmitted from the outer plate 10.

<Cosmetic member 25>
The decorative member 25 has substantially the same width dimension as the width dimension of the upper frame member 23, and is plated, painted, or the like including the front surface portion 25b. For example, the appearance can be made to have a material, color, gloss, etc. different from that of the outer plate 10. As a result, the degree of freedom in the design of the door 5a can be improved. As the material of the decorative member 25, for example, ABS resin having good adhesiveness to the foamed heat insulating material 50 (urethane) can be used.
Details of the decorative member 25 will be described later.

<Inner plate 60>
The inner plate 60 is, for example, a resin plate material provided on the rear side of the door frame 21-24 with the space 40 interposed therebetween and forming a surface facing the space forming the storage chamber.

<Vacuum heat insulating material 30>
The vacuum heat insulating material 30 is provided on the rear surface side of the outer plate 10 in the space 40. In the present embodiment, the vacuum heat insulating material 30 has a rectangular shape of a flat plate and is attached to the rear surface of the shatterproof film 90. The stock solution 50a of the foamed heat insulating material 50 can be suitably flowed by separating the upper end of the vacuum heat insulating material 30 and the bottom portion 23x provided on the upper frame member 23 by 10 m or more, but preferably 30 mm or more. Is. This distance is ensured so that the foamed heat insulating material 50 can easily flow into the narrow space 40a-40c described later. This separation is larger than the thickness of the narrow space 40a-40c (the dimension in the direction orthogonal to the flow direction of the foamed heat insulating material 50a).

The thickness of the narrow space 40a-40c is preferably 5 mm or less, more preferably 3 mm or 2 mm or less, at least partially or substantially entirely, from the viewpoint of increasing the density of the foamed heat insulating material 50 described later. is there. .. Further, from the viewpoint of sufficiently reaching the narrow space 40c, which is the innermost part of the narrow space, 0.5 mm or more, more preferably 1 mm or 2 mm or more is preferable. From the viewpoint of balance between the two viewpoints, it is preferably 2 mm or more and 3 mm or less.

<Foam insulation material 50>
The foamed heat insulating material 50 is filled including the space 40. The foamed heat insulating material 50 can be made of a rigid urethane foam or the like having self-adhesiveness, and the undiluted solution 50a is injected into the space 40 or its vicinity to generate the foamed heat insulating material 50a being foamed, and waits until this solidifies. It can be filled by.

≪Assembly of drawer type heat insulating door 5a≫
FIG. 7 is a rear view of the pull-out type heat insulating door 5a of the present embodiment with the inner plate 60 removed. Before the details of the assembly structure, the outline will be explained through the explanation of the assembly method. When assembling the drawer type heat insulating door 5a, first, the frame members 21, 22 and 24 are attached to the attachment portions 21a, 22a and 24a with, for example, double-sided tape. Next, the upper end of the outer plate 10 is inserted into the contact space 50. Next, the claw portion 25a of the decorative member 25 is inserted into the engaging hole 23h of the upper frame member 23, and the lower surface of the upper extending portion 23f of the upper frame member 23 and the upper surface of the upper edge portion 25c of the decorative member 25 are substantially slidably contacted. The upper frame member 23 and the decorative member 25 are temporarily assembled.

Subsequently, the front surface of the outer plate 10 is allowed to stand vertically downward, the shatterproof film 90 and the vacuum heat insulating material 30 are attached to the back surface of the outer plate 10, and then the foam heat insulating material 50 is formed in the space 40. Inject the stock solution 50a. The foamed heat insulating material 50a foams while spreading as shown by the broken line arrow illustrated in FIG. Next, the inner plate 60 is attached to the rear end side end of the door frame 20 to close the space 40. The foamed heat insulating material 50a in the foaming process includes a first narrow space 40a on the rear side of the outer plate rear surface pressing portion 23c1 and a lower side of the claw portion 25a, a second narrow space 40b on the upper surface of the claw portion 25a or near the engagement hole 23h, and below. It is filled including the third narrow section 40c near the upper surface of the extending portion 23g. As a result, the foamed heat insulating material 50a is filled between the upper frame member 23 and the decorative member 25, and after the foamed heat insulating material 50a is solidified, both members 23 and 25 are respectively adhered to and supported by the foamed heat insulating material 50.

As a result, as will be described later, the outer plate 10, the upper frame member 23, and the decorative member 25 are supported. In this way, the heat insulating door 5a is assembled. The upper surface of the upper edge portion 25c is substantially in contact with the lower surface of the upper extending portion 23f, and the foamed heat insulating material 50a is suppressed or prevented from leaking to the outside through these gaps.

The case is not limited to the case where the inner plate 60 is removed and filled and foamed. For example, a filling port used for injecting the undiluted solution 50a may be provided in a part of the inner plate 60.

≪Support structure such as the upper end of the outer plate 10≫
<Upper frame member 23>
The upper frame member 23 has a bottom portion 23x that forms the bottom of the concave space as the handle portion 23a, a rear inclined portion 23y that extends from the bottom portion 23x toward the rear upper side, and a rear inclined portion 23y that extends rearward from the rear inclined portion 23y. An L-shaped portion 23z extending downward, a front inclined portion 23i extending from the front end of the bottom portion 23x toward the front upper side, and a lower extending portion 23g branching from the middle of the front inclined portion 23i and extending forward. The outer plate rear surface pressing portion 23c1 extending downward from the lower extending portion 23g, the outer plate upper surface pressing portion 23c2 extending forward from the outer plate rear surface pressing portion 23c1, and the inclined portion 23i from the upper end to the front. It has an extending upper extending portion 23f and the extending portion 23f.

The outer plate rear surface pressing portion 23c1 has one or a plurality of engaging holes 23h (eight at substantially equal intervals in this embodiment) in the left-right direction. The claw portion 25a of the decorative member 25, which will be described later, is inserted into each of the engaging holes 23h, and even in this state, the foamed heat insulating material 50a being foamed can pass through the remaining gap of the engaging hole 23h.

Since FIG. 3a is a side sectional view taken at the portion where the engaging hole 23h is located, it seems that the outer plate rear surface pressing portion 23c1 and the lower extending portion 23g are separated from each other, but the engaging hole 23h When the side cross sections are taken at different positions, the outer plate rear surface pressing portion 23c1 existing continuously from the lower extending portion 23g can be observed.

<Cosmetic member 25>
The decorative member 25 includes a front surface portion 25b exposed as a design surface, a claw portion 25a extending rearward from the center side of the vertical dimension on the rear surface side of the front surface portion 25b, and an upper portion extending rearward from above the claw portion 25a. It has an edge portion 25c. The area from the claw portion 25a to the upper edge portion 25c (the area where the foamed heat insulating material 50 is formed and in contact) is smaller than the area of the foamed heat insulating material 50 formed in contact with the outer plate rear surface pressing portion 23c1. It is configured. As a result, the moment acting on the decorative member 25, which will be described later, can be effectively supported.

<Abutment space 70>
The upper end portion of the outer plate 10 is arranged in a contact space 70 formed between the outer plate rear surface pressing portion 23c1 and the front end portion 25b lower end side. The contact space 70 is formed as a gap having a U-shaped cross section, and an outer plate upper surface pressing portion 23c2 is provided at the upper end of the contact space 70, but this is not always essential.

The outer plate rear surface pressing portion 23c1 and the outer plate upper surface pressing portion 23c2 are in contact with or substantially in contact with the rear surface and the upper surface on the upper end side of the outer plate 10, respectively. As described above, a part of the undiluted solution 50a being foamed enters the first narrow space 40a while being guided by the inclined portion 23i from between the upper end and the bottom portion 23x of the vacuum heat insulating material 30, and finally the third. It reaches a narrow space 40c.

As a result, when the foaming of the undiluted solution 50a is completed and the foamed heat insulating material 50 is formed, the foamed heat insulating material 50 applies a forward pressing force to the outer plate 10 and the outer plate rear surface pressing portion 23c1. A clockwise moment (see solid arrow b in FIG. 3a) is applied to the decorative member 25 in the cross-sectional view of FIG. 3a. The pressing force of the outer plate 10 forward is supported by the lower end side of the front surface portion 25b. Further, the moment is supported by the upper frame member 23 via the foamed heat insulating material 50 in which the rear end of the upper edge portion 25c abuts on the inclined portion 23i or reaches the rear end of the upper edge portion 25c. The inclined portion 23i is inclined downward toward the rear so that the entrance side of the narrow space 40a expands, facilitating the inflow of the foamed heat insulating material.

<Support by the upper frame member 23 of the outer plate 10>
The claw portion 25a is arranged on the upper side of the outer plate upper surface pressing portion 23c2 and reaches the rear of the outer plate rear surface pressing portion 23c1 through the engaging hole 23h. As a result, the foaming heat insulating material 50 that has entered the first narrow space 40a, for example, receives the pressing force from the foaming heat insulating material 50 behind the outer plate rear surface pressing portion 23c1 and applies a pressing force in the forward direction to the outer plate 10. can do. Further, it is possible to apply a downward pressing force (to the lower frame member 24) to the outer plate 10 by receiving the pressing force from the foamed heat insulating material 50 that has entered the second narrow space 40b.

<Attachment of decorative member 25 and upper frame member 23>
The foamed heat insulating material 50 existing in the third narrow space 40c applies a pressing force and contributes to the attachment of the decorative member 25 and the upper frame member 23. Specifically, the foamed heat insulating material 50 presses the upper edge portion 25c toward the upper extending portion 23f or adheres to the upper side of the lower extending portion 23g.

Here, the upper extending portion 23f and the upper edge portion 25c are configured so that a gap does not occur during temporary assembly, but there is a concern that the foamed heat insulating material 50a may leak from the gap. In the present embodiment, in the direction in which the third narrow space 40c is filled with the foamed heat insulating material 50a (from the front direction to the rear direction), a gap that may occur between the upper extending portion 23f and the upper edge portion 25c is foamed and insulated. The direction is opposite to the direction in which the material 50a tries to pass (from the rear direction to the front direction). Therefore, when the foamed heat insulating material 50a passes through this gap, the pressing force of the foamed heat insulating material 50a is applied to the gap in advance, so that the possibility that the foamed heat insulating material 50a leaks from the gap can be reduced.

Further, the pressing force of the foamed heat insulating material 50 that has entered the second narrow space 40b, for example, the foamed heat insulating material 50 that has entered the engaging hole 23h through which the claw portion 25a is inserted, is also the attachment of the decorative member 25 and the upper frame member 23. Contributes to. Further, since the lower extending portion 23g is located between the upper edge portion 25c and the claw portion 25a, the lower extending portion 23g is supported by the foam insulating material 50 of the second and third narrow spaces 40b and 40c. Therefore, it is attached to the decorative member 25 via the foam heat insulating material 50.

<Gap G provided at the upper end of the outer plate 10>
As illustrated in FIG. 3b, a gap G is provided between the upper end of the outer plate 10 and the lower surface of the outer plate upper surface pressing portion 23c2. When the pressing force of the foamed heat insulating material 50 acts on the outer plate 10 through the outer plate rear surface pressing portion 23c1 or the like in the process of assembly, an upward force may act as a component force on the outer plate 10. Therefore, if the foaming heat insulating material 50a is started to foam so as to have a gap G as a movement allowance to some extent, it is possible to reduce the possibility that residual stress remains or is damaged in the outer plate 10. It is preferable that the gap G remains even after the end of foaming. As will be described later, since the vertical relationship between the upper frame member 23 and the decorative member 25 may be reversed, the gap G may be between the outer plate 10 and, for example, the claw portion 25a.

<Summary>
As shown in FIG. 3a, the foamed heat insulating material filled and foamed in the space 40 flows as shown by the broken line arrow, and the outer plate 10 receives the foaming pressure at this time in the direction of the solid line arrow a (direction away from the heat insulating door 5a). ) Is pressed. The force that pushes the outer plate 10 forward pushes the lower end of the decorative member 25 that hangs on the upper end of the outer plate 10, and the upper edge 25c serves as a fulcrum and rotates toward the front side (solid arrow). b) There is a risk that the decorative member 25 will be deformed or detached, the gap between the outer plate 10 and the contact space 50 will be large and the design will be deteriorated, or the foamed heat insulating material 50a will leak from the gap.

Further, as described above, the engaging hole 23h into which the claw portion 25a of the decorative member 25 enters is sized so that the foamed heat insulating material 50a can flow in even when the claw portion 25a has entered. That is, the foamed heat insulating material 50a that has flowed into the first narrow space 40a through the inclined portion 23i passes through the engaging hole 23h and flows into the space 40b between the upper edge portion 25c and the lower extending portion 23g. Is formed, and the narrow spaces 40a and 40b are sufficiently filled.

The density of the foamed heat insulating material 50a increases as the thickness of the inflowing space decreases, and the rigidity of the foamed heat insulating material 50a itself can be increased. The foamed heat insulating material 50 in the narrow space 40a-40c is filled in an uneven shape in a cross-sectional view illustrated in FIG. 3a. As a result, the bonding area between the decorative member 25 and the foamed heat insulating material 50, and the upper frame member 23 and the foamed heat insulating material 50 can be increased, and the strength can be improved. Further, the momentum of the foamed heat insulating material 50 flowing into the narrow space 40a-40c can be suppressed, and foamed heat insulating material is formed from the gap between the pressing portion 23c and the claw portion 25a and between the upper extending portion 23f and the upper edge portion 25c. It is possible to prevent the material 50 from leaking to the outside.

Further, the lower extending portion 23g of the upper frame member 23 is positioned so as to be sandwiched between the claw portion 25a and the upper edge portion 25c of the decorative member 25. As a result, the foaming pressure of the foamed heat insulating material 50 flowing into the narrow space 40b pushes the claw portion 25a downward and the upper edge portion 25c upward, so that the holding portion 23c and the outer plate 10 by the claw portion 25a are pushed. It is possible to improve the bearing capacity of the foam insulating material 50 and reduce the gap between the upper edge portion 25c and the upper extending portion 23f to suppress leakage of the foamed heat insulating material 50 to the outside. Further, the density of the foamed heat insulating material 50 can be increased and the strength can be improved by narrowing the narrow space 40b by interposing the lower extending portion 23g.

As described above, according to the present embodiment, by filling the narrow space 40a-40c with the foamed heat insulating material 50, the frame member 23 and the decorative member 25 can be adhered and fixed by using the foamed heat insulating material 50. As a result, it is possible to increase the strength against the foaming pressure of the foamed heat insulating material and the force acting toward the front through the handle portion 23a when the heat insulating door 5a is opened.

≪Other variants≫
The above configuration is used for various purposes such as vending machines, cold storage delivery boxes, fishing tackle coolers, food delivery boxes, cold storage boxes for sample transportation, special refrigerators / freezers, special freezer trucks, freezer containers, showcases, etc. It can also be used as a door for equipment or as a wall material.

Further, the outer plate 10 may be provided with a single color tone or a pattern by applying a paint or printing on the back surface thereof. Further, the decorative member 25 and the contact space 50 for attaching the decorative member 25 are described by exemplifying a configuration in which the frame member 23 on the upper side of the heat insulating door 5a is provided, but the present invention is not limited to this. It can also be provided on the frame members 21, 22, and 24.

Further, the components of the frame member 23 and the decorative member 25, for example, the engaging hole 23h and the claw portion 25a that contribute to the support, and the upper extending portion 23f and the upper edge portion 25c may be provided on different members. .. Further, the lower extending portion 23g and the pressing portion 23c may be provided on the decorative member 25. Further, the positional relationship between the upper extending portion 23f and the upper edge portion 25c may be reversed. In this case, since the exposed area of the upper edge portion 25c of the decorative member 25 can be increased, it is suitable when the decorative member 25 is desired to stand out.

1 Refrigerator 2a, 3a, 4a, 5a, 6a Insulated door 10 Outer plate 21 Frame member (right side)
22 Frame member (left side)
23 Frame member (upper side)
23a Handle part 23c1 Outer plate rear surface presser part (presser part)
23c2 Upper surface presser part (presser part)
23f Upper extension part 23g Lower extension part 23h Engagement hole part 23i Front inclined part 23x Bottom part 23y Rear inclined part 23z L-shaped part 24 Frame member (lower side)
25 Decorative member 25a Claw part 25b Front part 25c Upper edge part 30 Vacuum heat insulating material 40 Narrow space 50 Foam heat insulating material 60 Inner plate 70 Contact space 90 Anti-scattering film

Claims (3)

With the outer panel
A refrigerator including a frame member provided on the peripheral edge of the outer plate.
Has a decorative member
An effervescent heat insulating material is arranged between the decorative member and the frame member.
One of the decorative member and the frame member has a claw portion extending toward the other of the decorative member and the frame member.
The other of the decorative member and the frame member has an engaging hole with which the claw portion is engaged.
The engaging hole has a size larger than that of the claw portion and has a size larger than that of the claw portion.
The engaging The Goana, refrigerator foam insulation is that are provided in addition to the pawl portion. With the outer panel
A refrigerator including a frame member provided on the peripheral edge of the outer plate.
Has a decorative member
An effervescent heat insulating material is arranged between the decorative member and the frame member.
There is a region where one upper surface and the other lower surface of the decorative member and the frame member are in contact with each other.
The other surface of the member having the upper surface faces the space through which the foamed heat insulating material is foamed.
In the process of foam insulation in the foam is gradually filled, refrigerator and direction of travel of said a direction foamed heat insulating material progresses through the region space has been configured so as to be opposite to each other. With the outer panel
A refrigerator including a frame member provided on the peripheral edge of the outer plate.
Has a decorative member
An effervescent heat insulating material is arranged between the decorative member and the frame member.
One of the decorative member and the frame member has a claw portion extending toward the other of the decorative member and the frame member.
There is a region where one upper surface and the other lower surface of the decorative member and the frame member are in contact with each other.
It has a downward extending portion located between the claw portion and the region.
The foamed heat insulating material arranged between the lower extending portion and the claw portion,
Lower extending portion and refrigerators that Yusuke and foam insulation, the disposed between said region.

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