JP6244545B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator, and particularly to a refrigerator door configuration.

  In general, this type of refrigerator is provided with a refrigerator compartment, a freezer compartment, a vegetable compartment, etc. in a refrigerator body having heat insulation properties, and each of these refrigerator compartments, freezer compartments, vegetable compartments, etc. can be opened and closed by a door.

  The door is urethane between a front plate that is the front surface of the refrigerator body, an inner frame that is an inner surface of a refrigerator compartment, a freezer compartment, a vegetable compartment, etc., and a frame that integrally connects the front plate and the inner frame. A foaming heat insulating material such as foaming is filled and foamed so as to have heat insulating properties similar to the refrigerator main body.

  In such refrigerators, recently, a foam heat insulating material embedded with a vacuum heat insulating material in order to improve the heat insulating property of the door has been seen (for example, see Patent Document 1).

  FIG. 8 shows a door described in the above-mentioned Patent Document 1, and the door 101 is composed of an outer plate 102, an inner frame 103, an edge frame 104, and a foam heat insulating material 105 filled between them. A vacuum heat insulating material 106 is embedded in the heat insulating material 105. The vacuum heat insulating material 106 is held at a predetermined position by a strip-shaped support member 107 made of plastic.

Japanese Patent No. 5193980

  According to the above-described conventional configuration, the heat insulating property of the door is improved because the highly heat insulating vacuum heat insulating material 106 is embedded in the foam heat insulating material 105, and accordingly, the thickness of the foam heat insulating material 105, that is, the thickness of the door 101 is increased. There is an advantage that can be made thin and the volume in the warehouse can be increased.

  However, by reducing the thickness of the door 101, the heat insulating property of the handle portion 108 formed concavely on the edge frame 104 was lowered, and there was a tendency that the handle portion 108 was likely to sweat. That is, although the strip-like support member 107 is located on a part of the inner surface side of the handle portion 108, the most part of the inner surface portion is only provided with the foam heat insulating material 105. However, since it is thin as described above, the temperature is lowered by the cold inside the cabinet, and sweating occurs at high temperature and high humidity such as in the rainy season.

  This invention is made | formed in view of such a point, and provides the refrigerator which can prevent perspiration of a handle part, maintaining the thickness of a door thin.

In order to achieve the above object, the present invention comprises a refrigerator main body and a door having heat insulation properties, the door having a drawer rail, and the door includes a door exterior plate constituting the front surface of the door, and an inner side of the door exterior plate. An inner frame located on the door, an edge frame constituting an outer peripheral surface between the door outer plate and the inner frame, and a foam heat insulating material filled and foamed in a space between the door outer plate, the inner frame and the edge frame A refrigerator in which a mounting bracket for attaching the drawer rail is fixed to the inner surface of the inner frame, and a vacuum heat insulating material is embedded in the foam heat insulating material. The refrigerator is recessed in the foam heat insulating material in the edge frame. In addition, the handle is recessed and the vacuum heat insulating material is not in contact with the mounting bracket.
One end portion of the vacuum heat insulating material is supported by a heat insulating support provided between the attachment bracket and the end of the vacuum heat insulating material is disposed obliquely along the inclined surface of the heat insulating support. It is set as the structure located even to the part which opposes the inner surface of the back wall of a part .

  As a result, the thickness of the door can be reduced by providing a vacuum heat insulating material, and the inner surface of the inner wall of the handle is strongly insulated by the vacuum heat insulating material. Can be prevented in advance.

  ADVANTAGE OF THE INVENTION This invention can provide the refrigerator which can prevent perspiration of a handle part, maintaining a door thickness thin.

External appearance perspective view of the refrigerator in Embodiment 1 of this invention Schematic sectional view of the refrigerator Perspective view showing one of the doors of the refrigerator Exploded perspective view of the refrigerator door AA sectional view of FIG. A perspective view of the refrigerator door from the inside BB sectional view of FIG. Sectional view of a door in a conventional refrigerator

1st invention consists of the refrigerator main body and door which have heat insulation, and while the said door has a drawer rail , the said door is the inside which is located inside the door exterior plate which comprises the door front surface, and a door exterior plate It consists of a frame, an edge frame constituting an outer peripheral surface between the door exterior plate and the inner frame, and a foam heat insulating material filled and foamed in a space between the door exterior plate, the inner frame and the edge frame. The mounting bracket for attaching the drawer rail to the inner surface of the inner frame is fixed, and a vacuum heat insulating material is embedded in the foam heat insulating material, and the handle portion is recessed into the foam heat insulating material in the edge frame. The vacuum heat insulating material is supported between one end of the vacuum heat insulating material by a heat insulating support provided between the mounting metal fitting so that the vacuum heat insulating material is not in contact with the mounting metal fitting, and the heat insulating support is provided. said vacuum sectional disposed obliquely along the inclined surface of the body There the ends of the timber as a configuration in which is positioned to back wall inner surface facing the portion of the grip portion.

As a result, the thickness of the door can be reduced by providing a vacuum heat insulating material, and the inner surface of the inner wall of the handle is strongly insulated by the vacuum heat insulating material. In addition, the end of the vacuum heat insulating material can be positioned on the inner surface side of the back wall of the handle portion while avoiding the pull-out rail mounting bracket, and sweating can be prevented.

According to a second invention, in the first invention, a heat diffusion layer is provided on the inner surface of the back wall of the handle portion.

  As a result, even if there is a part that cannot be completely insulated by the vacuum heat insulating material in the grip part and the temperature of the part may be lowered, this low temperature can be dispersed by the heat diffusion layer, It is also possible to prevent sweating.

The third invention is the first to second inventions, wherein the door exterior plate is made of a transparent front plate with a colored layer such as a glass plate and the foam insulation is made of urethane foam, and the transparent front plate is made of urethane foam. The outer peripheral portion of the adhesive is held without being covered with a transparent front plate insertion portion or the like so that it is exposed as it is.

  Thereby, while being able to demonstrate the high texture by having used the transparent front plate, the transparent front plate can be bonded and held by foamed urethane, the transparent front plate insertion part can be eliminated, and the design can be improved, and Nevertheless, even if the transparent front plate is adhered and held to the foamed urethane, it is possible to suppress warping deformation of the transparent front plate due to the thermal shrinkage of the urethane foam from the place where the vacuum heat insulating material is a rigid body. A unique high design property can be maintained well for a long period of time, and a refrigerator having a thin and high design property with no sweating of the handle portion can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a transparent front plate such as a glass plate is used as the door exterior plate, and the transparent front plate insertion portion that holds the outer peripheral portion of the transparent front plate is abolished, and a refrigerator with improved design is taken as an example. However, the present invention is not limited thereby.

(Embodiment 1)
1 is an external perspective view of the refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a schematic sectional view of the refrigerator, FIG. 3 is a perspective view showing one of the doors of the refrigerator, and FIG. 5 is an AA sectional view of FIG. 3, FIG. 6 is a perspective view of the refrigerator door viewed from the inside, and FIG. 7 is a BB sectional view of FIG.

  1 and 2, the refrigerator body 1 includes a metal (for example, iron plate) outer box 2 that opens forward, an inner box 3 that is made of hard resin (for example, ABS), an outer box 2, and an inner box 3. It consists of the hard foaming urethane 4 foam-filled between. The refrigerator main body 1 is located inside the refrigerator compartment 5, the switching chamber 6 located below the refrigerator compartment 5, the ice making chamber 7 juxtaposed to the switching chamber 6, and the switching chamber 6 and the lower part of the ice making chamber 7. It has a freezer compartment 8 and a vegetable compartment 9 located below the freezer compartment 8. Further, the front surface of the refrigerator compartment 5 is opened and closed freely by, for example, double doors 10 and 10, and the front portions of the switching chamber 6, the ice making chamber 7, the freezer compartment 8 and the vegetable compartment 9 are drawn out doors 11 and 10. 12, 13 and 14 are closed freely.

  There is a cooling chamber 16 on the back surface of the refrigerator body 1, and a cooler 17 that generates cool air and a blower fan 18 that supplies the cool air to each chamber are provided. In addition, a compressor 19 is provided at the back of the top of the main body of the refrigerator body 1, and a condenser (not shown), a heat radiating pipe 20, a capillary tube 21, and the cooler 17 described above are provided. A refrigerant is enclosed in a refrigeration cycle that is sequentially connected in an annular manner, and a cooling operation is performed.

  Here, each of the doors 10 to 14 is foamed and filled with hard urethane like the refrigerator body 1 so as to have heat insulation properties, and its front surface is made of a transparent front plate such as a glass plate in order to further improve the design. It is.

  Hereinafter, the structure of the door 13 will be described as an example with reference to FIGS. The doors 11 to 14 other than the door 13 have basically the same configuration.

  3 to 7, reference numeral 23 denotes an inner box frame which is located inside the refrigerator main body 1, and is formed of, for example, ABS resin. Reference numeral 24 denotes an edge frame bonded and fixed to the peripheral end face of the inner frame 23, and is formed of ABS resin. Reference numeral 25 denotes a door exterior plate (hereinafter referred to as a glass plate) made of a transparent front plate such as a glass plate laminated on the edge frame 24 so as to cover the inner frame 23. In this embodiment, glossy tempered glass is used. It is made of a plate.

As shown in FIGS. 5 and 7, the glass plate 25 has a resin film 27 attached to the inner surface of the glass plate 25 with an adhesive 26. The resin film 27 has a picture pattern, for example, a metallic pattern such as a hairline. A colored layer 28 is formed. As a result, the glass plate 25 becomes a glass plate with a colored layer. In this embodiment, the resin film 27 is made of polyethylene terephthalate having high transparency and high mechanical strength, and the colored layer 28 is formed on the side opposite to the glass plate 25 in the white system and on the glass plate 25 side in the gray system. It is formed. In the drawing, the case where it is formed on the side opposite to the glass plate 25 is shown.

  Reference numeral 31 denotes a grip portion formed by forming a downward concave portion on the upper end surface of the edge frame 24 constituting the door. As shown in FIG. 5, the inner surface of the rear wall 31a has good thermal conductivity such as aluminum tape. A heat diffusion layer 31b made of a material is provided. The heat diffusion layer 31b may be configured by coating a paint having a good thermal conductivity such as an aluminum powder paint.

  29 is a foam heat insulating material such as hard urethane filled and foamed in a space between the surface of the glass plate 25 on the side of the resin film 27 and the inner frame 23 and the edge frame 24. Together with the inner frame 23 and the edge frame 24 by foaming. It adheres to the resin film 27 on the inner surface of the glass plate 25, and the glass plate 25 is bonded and held via the resin film 27.

  Reference numeral 30 denotes a vacuum heat insulating material embedded and disposed almost over the entire area of the foam heat insulating material 29 between the inner frame 23 and the glass plate 25. The core material is sealed with an outer covering material such as an aluminum sheet and evacuated. As is well known, its heat insulating property is considerably higher than that of urethane foam, and it has rigidity and becomes a strength member.

  Here, as shown in FIG. 4, the door 13 has a drawer rail mounting bracket 22 fixed to the inner surface of the inner frame 23, and a drawer rail 22 a is mounted on the drawer rail mounting bracket 22. A support 22b such as polystyrene foam is provided to be positioned and held so as not to contact the drawer rail mounting bracket 22.

  The vacuum heat insulating material 30 is disposed in the foam heat insulating material 29 in an obliquely inclined state as shown in FIG. 5 so that the upper end of the vacuum heat insulating material 30 faces the inner surface of the rear wall 31a of the handle portion 31 of the door. It is provided.

  In this embodiment, the edge frame 24 of the inner frame 23 does not have a glass plate insertion portion that fits and holds the outer peripheral portion of the glass plate 25, and the glass plate 25 The outer peripheral portion is exposed as it is. Further, the glass plate 25 has a configuration in which the outer peripheral edge is positioned slightly inside the end surface 24a of the edge frame 24 as shown in FIG.

  Moreover, the said handle part 31 is made into the inclined surface which is located in the door inner side, so that the back wall 31a goes to the door edge X. As shown in FIG.

  Furthermore, in this embodiment, a configuration for ensuring the adhesion and holding of the glass plate 25 which is concerned by eliminating the glass plate insertion portion that holds the outer peripheral portion of the glass plate 25 is provided, and the configuration will be described below. .

  First, the glass plate 25 is formed as a colored glass plate by attaching the resin film 27 on which the colored layer 28 is formed with the adhesive 26 as described above. Then, an easy adhesion layer 32 is formed on the surface of the resin film 27 on the foamed urethane side, and the foam heat insulating material 29 is adhered via the easy adhesion layer 32. The easy-adhesion layer 32 can be formed by subjecting the surface of the resin film 27 to corona treatment or plasma treatment, or applying a polyester or urethane adhesive. In this embodiment, a polyester adhesive is applied.

Further, the foam heat insulating material 29 filled and foamed in the space between the surface on the side of the resin film 27 of the glass plate 25 and the inner frame 23 and the edge frame 24 has a foam density of the outer peripheral portion from the central portion of the glass plate 25. Is set higher.

  The refrigerator door 13 configured as described above has the vacuum heat insulating material 30 in the foam heat insulating material 29, and the end of the vacuum heat insulating material 30 faces the inner surface of the back wall 31 a of the handle portion 31. Since the door 13 is located up to a portion, the thickness of the door 13 can be reduced by providing the vacuum heat insulating material 30, and the inner surface of the back wall of the handle portion 31 is strongly insulated by the vacuum heat insulating material 30, It is possible to prevent sweating at low temperatures.

  In particular, since the vacuum heat insulating material 30 is disposed obliquely, its end portion faces the inner surface of the back wall 31a of the handle portion 31 in a state where the drawer rail mounting bracket 22 provided on the door 13 is avoided. It is possible to prevent sweating at the handle portion 31 without increasing the door thickness. That is, when the vacuum heat insulating material 30 is disposed vertically along the glass plate 25 without being disposed obliquely and is positioned on the inner surface of the rear wall 31 a of the handle portion 31, the vacuum heat insulating material 30 contacts the drawer rail mounting bracket 22. Therefore, it is necessary to increase the door thickness to avoid this contact. However, by installing the vacuum heat insulating material 30 obliquely as in the present invention, the upper end of the vacuum heat insulating material 30 can be positioned on the inner surface of the rear wall 31a of the handle portion 31 without bringing the vacuum heat insulating material 30 into contact with the drawer rail mounting bracket 22. It is possible to suppress the door thickness from increasing. Therefore, even if it is a door with a drawer rail, the end of the vacuum heat insulating material 30 can be disposed at the back of the handle portion 31 by avoiding the drawer rail mounting bracket 22 without increasing the door thickness by installing the vacuum heat insulating material 30 obliquely. Sweating can be prevented by placing the wall 31a on the inner surface side.

  Further, since a heat diffusion layer 31b such as aluminum tape is provided on the inner surface of the back wall 31a of the handle portion 31, a portion that cannot be insulated by the vacuum heat insulating material 30 remains in the handle portion 31, and the temperature of the portion is stored. Even if the temperature is lowered due to the influence of the internal cold air, the low temperature can be dispersed by the thermal diffusion layer 31b. Therefore, it is possible to prevent a portion of the handle portion 31 from sweating due to local temperature reduction.

  In this embodiment, since the door exterior plate is made of the glass plate 25, the texture is improved, and the colored layer 28 of the glass plate 25 is formed on the resin film 27. A fine pattern such as a hairline that cannot be obtained substantially due to a high defect rate can be formed by silk-printing the colored layer, and the design can be remarkably improved.

  In addition, this door has the glass plate insertion portion because the glass plate 25 is bonded and held by the adhesive force of urethane of the foam heat insulating material 29 to eliminate the glass plate insertion portion that covers the peripheral edge of the glass plate. The protrusion part exists in the door surface like a thing, and it does not impair the designability, and it can be made the clean appearance with a flat feeling on the whole surface. Also, dust and dust adhere to and accumulate on the boundary between the glass plate insertion part and the glass plate, and this tends to stand out linearly, but without this, high initial design properties over a long period of time Can be maintained as it is.

  On the other hand, the glass plate 25 has a large specific heat, and once cooled by heat transfer from the foam heat insulating material 29 or the inner frame 23, the glass plate 25 comes into contact with the high humidity outside air or the cold air when the door is opened and closed, and is likely to sweat. However, heat transfer is blocked by the vacuum heat insulating material 30, and sweating can be prevented as with the handle.

Further, since the vacuum heat insulating material 30 has high rigidity, even if the foam heat insulating material 29 undergoes some thermal shrinkage, the warp deformation of the entire door is reliably prevented against this, and the strength of the entire door is also improved. That is, the door can be made with less warping deformation. Moreover, the vacuum heat insulating material 30 also greatly improves the heat insulating property of the door, and accordingly, the thickness of the door, that is, the thickness of the foam heat insulating material 29 is reduced to suppress the heat shrinkage force of the urethane foam, and the glass plate 25. Contributes to eliminating warping deformation.

  Further, since the inner wall 31a of the handle portion 31 is inclined so as to be located inward of the door as it goes to the door edge X, the foam heat insulating material 29 causes a slight warp deformation due to thermal contraction, and the handle portion 31 is Even if it is deformed, the deformation is deformed to the inside of the door as it goes to the door edge X. That is, the deformation is inconspicuous because it is deformed in the same direction as the inclination of the inclined surface of the back wall 31a of the handle portion 31. Thus, the design property is not impaired and the good design property can be maintained over a long period of time.

  In addition, in this embodiment, since the foaming density of the foam heat insulating material 29 is higher in the outer peripheral portion than in the central portion of the glass plate 25, the adhesive strength of the foam heat insulating material 29 is the outer peripheral portion of the glass plate 25. Is stronger. Thereby, the adhesive force of the resin film 27 of the glass plate 25 and the foam heat insulating material 29 can be more reliably maintained and ensured over a long period of time.

  That is, the refrigerator has a large temperature difference between the inside and the outside, and the end of the glass plate 25 of the door is affected by condensation and severe temperature changes due to the cold air from the inside when the door is opened and closed. Further, depending on the usage of the user, the door may be subjected to a severe impact during opening and closing, or the door including the glass plate 25 may overflow with water or juice when the stored items are put in and out. And the end part of the glass plate 25 becomes an environment easily peeled off from the foam heat insulating material 29 if there is no glass plate insertion part which covers the said glass plate end part by the use environment and the actual condition peculiar to such a refrigerator.

  However, in this embodiment, the end portion of the glass plate 25, that is, the peripheral portion is bonded to the urethane skin layer having a high foaming density of the foam heat insulating material 29, that is, very finely foamed. The adhesive density between the heat insulating material 29 and the resin film 27 of the glass plate 25 is high and strong. Therefore, even when used for a long period of time, adhesion between the resin film 27 of the glass plate 25 and the foamed heat insulating material 29 is ensured, and the adhesion strength of the glass plate 25 with the film can be maintained and ensured for a long period of time, thereby ensuring reliability. It is.

  In addition, in this embodiment, since the easy adhesion layer 32 is formed on the adhesive surface of the resin film 27 with the foam heat insulating material 29, the adhesive strength between the resin film 27 and the foam heat insulating material 29 becomes higher, It is possible to more reliably prevent the resin film 27 and thus the glass plate 25 from peeling off from the foam heat insulating material 29, and to maintain and ensure the adhesive strength of the glass plate with film 25 for a long period of time.

  In particular, as exemplified in this embodiment, when polyethylene terephthalate is used as the resin film 27 and the easy-adhesion layer 32 is a urethane polyester adhesive, the adhesive strength becomes strong. Therefore, even when used for a long period of time, the adhesion between the resin film 27 of the glass plate 25 and the foam heat insulating material 29 can be secured, and the adhesion strength of the glass plate 25 with a film can be maintained and ensured for a long period of time.

  Further, when the microscopic surface of the adhesive surface between the resin film 27 and the foam insulation 29 is seen, the urethane foam skin layer and the resin film 27 are adhered to each other. Since the surface of is smooth, there is a risk that it will be peeled off at once if it is peeled off. In particular, when the foaming density of the outer peripheral portion of the glass plate is increased and the adhesive surface is used as a skin layer, there is a risk that peeling will spread at the outer peripheral portion of the glass plate.

However, in this embodiment, as described above, since the easy adhesion layer 32 is formed on the adhesive surface of the resin film 27 with the foam heat insulating material 29, the adhesive strength between the resin film 27 and the foam heat insulating material 29 is enhanced. The spread of peeling between the foamed urethane skin layer and the resin film 27 as described above can be prevented. Therefore, the adhesive strength between the resin film 27 on the inner surface of the glass plate and the foam heat insulating material 29 can be maintained and ensured over a long period of time, and the reliability can be further improved.

  The adhesive strength between the glass plate 25 and the foam insulation 29 is a result of an accelerated life test. As a result, the adhesion is 1.0 g / cm 2 or more, preferably 2.6 g / cm 2 or more. 29, the adhesive strength between the resin film 27 and the foam heat insulating material 29 can be surely ensured even if the adhesive strength is deteriorated due to secular change such as heat shrinkage of 29, and the adhesive strength of the glass plate 25 is extended over a long period of time. It was possible to maintain and ensure the reliability. The method for measuring the adhesive force is described in “JIS K 6850 (Adhesive—Tensile Shear Adhesive Tensile Shear Adhesive Strength Test Method)”, which is a standard method for measuring the overlapping shear adhesive strength of an adhesive. Based.

  Further, since the outer peripheral edge of the glass plate 25 is positioned slightly inside the end surface 24a of the edge frame 24, the end surface 24a of the edge frame 24 protects the outer peripheral edge of the glass plate 25. Therefore, for example, it is possible to prevent the outer peripheral edge of the glass plate 25 from hitting a certain object and cracking at the time of door transportation on the production line or door replacement service at the user's house.

  Even if some external force is applied to the glass plate 25 and it should break, this glass plate piece is adhered to the resin film 27 to prevent scattering, and safety in the event of an emergency is also improved. To do.

  It is also conceivable that the resin film 27 of the glass plate 25 and the edge frame 24 of the inner frame 23 are further bonded with a double-sided tape in order to further secure the adhesion of the glass plate.

  As mentioned above, although embodiment of this invention was described, the said embodiment was shown as an example in implementing this invention, and it can change variously within the range which achieves the objective of this invention. Needless to say.

  For example, although the handle portion 31 is illustrated as having an upwardly recessed portion formed in the lower end surface of the door edge frame 24, this may be the upper end surface or the lateral end surface of the door.

  Moreover, although the glass plate was illustrated as a door exterior plate, this may be a transparent resin plate, and this makes it possible to further ensure the adhesive strength by reducing the weight, and to reduce the cost. Of course, a metal plate or the like may be used.

  As described above, the present invention can prevent sweating of the handle portion while maintaining a thin door thickness, and can be widely applied to refrigerators and wine coolers for business use as well as general use.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Urethane foam 5 Refrigeration room 6 Switching room 7 Ice making room 8 Freezing room 9 Vegetable room 10, 11, 12, 13, 14 Door 16 Cooling room 17 Cooler 18 Air blower fan 19 Compressor 20 Radiation pipe 21 Capillary tube 22 Drawer rail mounting bracket 22a Drawer rail 22b Support body 23 Inner frame 24 Edge frame 24a End face 24b Transparent front plate support piece (glass plate support piece)
25 Transparent front plate (glass plate)
DESCRIPTION OF SYMBOLS 26 Adhesive 27 Resin film 28 Colored layer 29 Foam heat insulating material 30 Vacuum heat insulating material 31 Handle part 31a Back wall 31b Thermal diffusion layer 32 Easy adhesion layer 33 Double-sided tape

Claims (3)

It consists of a refrigerator main body and a door having heat insulation properties, and the door has a drawer rail, the door includes a door exterior plate constituting the door front surface, an inner frame positioned inside the door exterior plate, and the door exterior. An edge frame constituting an outer peripheral surface between the plate and the inner frame, and a foam heat insulating material filled and foamed in a space between the door exterior plate and the inner frame and the edge frame. A refrigerator in which a mounting bracket for attaching the pull-out rail is fixed to an inner surface, and a vacuum heat insulating material is embedded in the foam heat insulating material, and the handle portion is recessed and formed in the foam heat insulating material in the edge frame. The vacuum heat insulating material supports one end of the vacuum heat insulating material with a heat insulating support provided between the mounting metal fitting so as to be in a non-contact state with the mounting metal fitting, and follows the inclined surface of the heat insulating support body. disposed obliquely Te before the end of the vacuum heat insulating material Refrigerator, characterized in that is positioned to back wall inner surface facing the portion of the handle portion. The refrigerator according to claim 1, wherein a heat diffusion layer is provided on the inner surface of the back wall of the handle portion. The door exterior plate is made of a transparent front plate with a colored layer such as a glass plate, and the foam insulation is made of foamed urethane.The transparent front plate is bonded and held by foamed urethane, and the outer peripheral portion thereof is a transparent front plate insertion portion, etc. The refrigerator according to claim 1 or 2 , wherein the refrigerator is exposed as it is without being covered.

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