JP2016038144A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator with a door capable of attaching and holding a glass plate of a door front surface for a long period of time.SOLUTION: A refrigerator includes a door which is configured by attaching and integrating a transparent front plate 25 and urethane foam 26, and it is configured in such a manner that the transparent front plate 25 forms a coating film layer 31 on a surface on the urethane foam 26 side, and the coating film layer 31 does not include a defoaming material which breaks a closed cell of the urethane foam 26. Thereby, the closed cell on the surface which is attached to the coating film layer 31 of the urethane foam 26 can be prevented from becoming voids by being broken by a defoaming agent. Therefore, the urethane foam is left as a skin layer in which the entire surface coming into contact with the coating film layer is formed by the closed cell and is attached to the coating film layer, and its adhesive strength becomes strong. Thus, the adhesive strength between the transparent front plate and the urethane foam can be maintained and guaranteed for a long period of time, and reliability can be enhanced.SELECTED DRAWING: Figure 8

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 includes a front plate that is a front surface of the refrigerator body, an inner box frame that is an inner surface of a refrigerator compartment, a freezer compartment, a vegetable compartment, and the like, and a frame that integrally connects the front plate and the inner box frame. Urethane is filled and foamed between them, and it is configured to have heat insulating properties like the refrigerator body.

  In such a refrigerator, the front plate of the door greatly affects the appearance of the entire refrigerator, that is, the design, and the finish greatly affects the quality of the entire refrigerator.

  In view of this, there is a structure in which the front plate of the door is made of a glass plate in order to improve the design of the door (for example, see Patent Document 1).

  FIG. 12 shows the door proposed in Patent Document 1, and its front plate 101 is composed of a colored glass plate 103 in which a coating layer 102 such as a colored pattern is formed by silk printing. A urethane 106 is filled and foamed between the inner box frame 104 and the frame body 105.

Japanese Patent No. 3140110

  According to the above conventional configuration, since the transparent layer of the colored glass plate 103 is positioned in front of the coating film layer 102, the coloring color by the coating film layer 102 is added to the depth, and the texture is increased. Compared to the pre-painted plate, there is an advantage that the design is improved.

  However, since the conventional door is provided with the glass plate insertion portion 107 in the frame body 105 and the colored glass plate 103 is fitted in the glass plate insertion portion 107, the edge of the glass plate insertion portion 107 is a colored glass plate. There is a problem in that the design property that is exposed around the front surface of 103 and is improved by using the colored glass plate 103 is impaired.

  Moreover, very fine pride and dust are deposited on the boundary between the edge of the glass plate insertion portion 107 and the colored glass plate 103, and even if this fine dust or dust is wiped off, it is completely removed. Can not be wiped off and begins to appear linear along the edge. If the coloring of the colored glass plate 103 is white, it will be noticeable after a short period of use, and will become more noticeable as the use period becomes longer, which greatly impairs the aesthetics of the refrigerator.

  Therefore, in order to solve such a problem, the applicant considered that the glass insertion portion 107 of the frame 105 was abolished and the end portion of the colored glass plate 103 was left exposed.

In such a configuration, the colored glass plate 103 is held only by the adhesive force with the foamed urethane 106, and the colored glass plate 103 having a weight larger than that of the metal or resin front plate is maintained for a long period of time. It is necessary to ensure that the urethane foam 106 is adhered and held.

  Therefore, the applicant made various studies on strengthening the adhesive force between the colored glass plate 103 and the foamed urethane 106. As a result, the following knowledge was obtained.

  That is, first, foamed urethane 106 is foamed on the surface of the colored glass plate 103, and these are directly bonded and integrated. Then, the adhesive surface between the colored glass plate 103 and the foamed urethane 106 is peeled off to determine the adhesion state. I checked it. As a result, voids (cavities formed by breaking fine closed cells formed in foamed urethane and connecting them) are formed on the adhesive surface between some of the glass plates 103 and urethane foam 106. Something was seen. Then, as a result of pursuing the cause of the void, the following was found.

  That is, in general, the foamed urethane has a higher heat insulating property and stronger adhesive force as the foamed bubbles are more closed and finer. Therefore, the foamed urethane is blended with a foam stabilizer so that the foamed foam becomes independent and fine. As the foam stabilizer, a silicone foam stabilizer having a chemical structure mainly composed of a hydrophobic group polydimethylsiloxane and a hydrophilic group is used.

  On the other hand, a colored glass plate of a refrigerator has a coating layer formed on its surface for coloring or the like, and an antifoaming agent is blended in the organic solvent-based paint forming the coating layer. As this antifoaming agent, a silicone-based antifoaming agent such as dimethyl silicone oil is used, and the silicone-based antifoaming agent has poor compatibility with the coating composition and is used until it is subjected to production after coating, that is, time. As it progresses, it elutes on the coating surface (bleed out).

  Therefore, when the foamed urethane is filled and foamed on the coating layer of the glass plate in which the silicone-based antifoaming agent is bleed out, fine closed cells are formed by the silicone-based foam stabilizer in the foamed urethane. It was also found that the closed cells were broken by the silicone-based antifoaming agent and spread along the coating surface to form voids. Therefore, the adhesive force between the colored glass plate and the urethane foam can be enhanced by eliminating the void generation caused by the foam breakage of the urethane foam by the antifoaming agent of the coating layer.

  The present invention has been made based on such knowledge, and is a highly reliable door capable of improving the adhesive strength between a transparent front plate such as a glass plate and urethane foam and maintaining and guaranteeing the adhesive strength over a long period of time. The purpose is to provide an attached refrigerator.

  In order to achieve the above object, the present invention is a refrigerator including a door formed by integrally bonding a transparent front plate and urethane foam, and the transparent front plate has a coating layer on the surface of the urethane foam, The coating layer does not include a defoaming material that breaks closed cells of urethane foam. It should be noted that the absence of the antifoaming agent means that the antifoaming agent is substantially not included, and includes a case in which a slight amount of the antifoaming agent is mixed unintentionally, and the antifoaming agent is pure. Does not mean that it is not included at all.

  With the above-described configuration, this door can suppress the formation of voids due to the closed cells of urethane foam being broken by the antifoaming agent. Therefore, the urethane foam remains adhered to the transparent front plate while remaining as a skin layer in which the entire adhesive surface becomes closed cells, and the adhesive strength becomes strong. Therefore, the adhesive strength between the transparent front plate and the urethane foam can be maintained and guaranteed over a long period of time, and the reliability can be improved.

  In other words, if there is an antifoaming agent on the transparent front plate side in contact with the urethane foam, as described above, this antifoaming agent will break the fine closed cells of the urethane foam, and this part will become a void and foam Although the adhesive area of urethane is reduced, the coating layer that adheres to the urethane foam does not contain an antifoaming agent, so the antifoaming agent of the coating layer will not break the closed cells of the urethane foam, The strength is strong. Thereby, the adhesive strength of the transparent front plate made of urethane foam can be maintained and secured over a long period of time, and a refrigerator with high design and reliability can be obtained.

  The present invention provides a refrigerator with a door having high design and reliability, which can enhance designability using a transparent front plate and can maintain and guarantee the adhesive force between the transparent front plate and urethane foam over a long period of time. can do.

External appearance perspective view of the refrigerator in Embodiment 1 of this invention Cross section 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. BB sectional view of FIG. Enlarged sectional view of the refrigerator door 7 is an enlarged cross-sectional view of portion A in FIG. The expanded sectional view of the A section of Drawing 7 in the door of the refrigerator in Embodiment 3 The expanded sectional view of the A section of Drawing 7 in the door of the refrigerator in Embodiment 4 The expanded sectional view of the A section of Drawing 7 in the door of the refrigerator in Embodiment 5 Sectional view of a door in a conventional refrigerator

  1st invention is a refrigerator provided with the door comprised by bonding and integrating the transparent front board and foaming urethane, The said transparent front board has a coating-film layer in the surface at the side of urethane foam, and this coating-film layer Is configured not to include an antifoaming material that breaks the closed cells of urethane foam. It should be noted that the absence of the antifoaming agent means that the antifoaming agent is substantially not included, and includes a case in which a slight amount of the antifoaming agent is mixed unintentionally, and the antifoaming agent is pure. Does not mean that it is not included at all.

  With the above-described configuration, this door can suppress the formation of voids due to the closed cells of urethane foam being broken by the antifoaming agent. Therefore, the urethane foam remains adhered to the transparent front plate while remaining as a skin layer in which the entire adhesive surface becomes closed cells, and the adhesive strength becomes strong. Therefore, the adhesive strength between the transparent front plate and the urethane foam can be maintained and guaranteed over a long period of time, and the reliability can be improved.

  In other words, if there is an antifoaming agent on the transparent front plate side in contact with the urethane foam, as described above, this antifoaming agent will break the fine closed cells of the urethane foam, and this part will become a void and foam Although the adhesive area of urethane is reduced, the coating layer that adheres to the urethane foam does not contain an antifoaming agent, so the antifoaming agent of the coating layer will not break the closed cells of the urethane foam, The strength is strong. Thereby, the adhesive strength of the transparent front plate made of urethane foam can be maintained and secured over a long period of time, and a refrigerator with high design and reliability can be obtained.

  2nd invention is set as the structure which formed the colored coating-film layer containing an antifoamer in the transparent front board side rather than the coating-film layer of the said transparent front board in 1st invention.

  As a result, the transparent front plate can be seen from the appearance of the colored coating layer containing the defoaming agent, and this colored coating layer containing the defoaming agent defoams the foam generated during coating with the defoaming agent. The coating surface becomes glossy and lustrous, and the appearance design can be further improved.

  According to a third invention, in the first or second invention, the coating layer formed on the transparent front plate is a vapor deposition layer.

  As a result, the vapor deposition layer also contains no antifoaming agent, so the adhesive strength between the transparent front plate and urethane foam is strong, and the adhesive strength between the transparent front plate and urethane foam is maintained and guaranteed over a long period of time. In addition, a unique design such as a mirror surface of the vapor deposition layer can be imparted to the transparent front plate, and the design can be further enhanced.

  4th invention is a refrigerator provided with the door which attached and integrated the transparent front board and foaming urethane through this film, attaching a film to a transparent front board, Comprising: The said film is a foaming urethane side surface A coating layer is formed on the coating layer, and the coating layer does not include a defoaming material that breaks closed cells of urethane foam. It should be noted that the absence of the antifoaming agent means that the antifoaming agent is substantially not included, and includes a case in which a slight amount of the antifoaming agent is mixed unintentionally, and the antifoaming agent is pure. Does not mean that it is not included at all.

  Thereby, this door can suppress that the closed cells of urethane foam are broken by the antifoaming agent and connected to form voids as in the first invention. Therefore, the urethane foam remains adhered to the film of the transparent front plate while maintaining the skin layer in which the entire adhesive surface becomes closed cells, and the adhesive strength becomes strong. Therefore, the adhesive strength between the transparent front plate and the urethane foam can be maintained and guaranteed over a long period of time, and the reliability can be improved. In addition, even if the transparent front plate receives an external force and may break, it is possible to prevent the fragments from scattering due to the presence of the film, thereby improving safety.

  5th invention is set as the structure which formed the colored coating-film layer containing an antifoamer in the transparent front board side rather than the coating-film layer in 4th invention.

  As a result, the transparent front plate can be seen through the film from the exterior to see the colored coating layer containing the defoaming agent, and this coating layer containing the defoaming agent can remove bubbles generated during coating with the defoaming agent. Since the defoaming is performed, the surface of the coating film becomes glossy and glossy, and the appearance design can be further enhanced.

  According to a sixth invention, in the first to fifth inventions, the transparent front plate has a configuration in which an outer peripheral portion thereof is bonded to a door edge frame.

  As a result, the transparent front plate is held not only by adhesion with foamed urethane but also by adhesion to the edge frame, and the adhesion and retention of the transparent front plate can be maintained and ensured more reliably.

  In a seventh aspect based on the first to sixth aspects, at least a portion of the edge frame of the inner box frame located on the lower end surface of the transparent front plate protrudes forward from the front surface of the transparent front plate. The transparent front plate supporting piece that is polymerized on the lower end surface of the transparent front plate is provided.

Thereby, since the transparent front plate is supported by the weight of the inner frame frame edge frame transparent front plate support piece, abnormal situations such as displacement of the transparent front plate can be surely prevented, and the sense of security is greatly improved.
Since the transparent front plate support piece does not protrude from the front surface of the transparent front plate, the transparent front plate support piece does not appear from the front surface of the door like the glass plate insertion portion, and the design can be maintained with good quality.

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

(Embodiment 1)
1 is an external perspective view of the refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a sectional view of the refrigerator, FIG. 3 is a perspective view showing one of the doors of the refrigerator, and FIG. 4 is an exploded view of the refrigerator door. 5 is a cross-sectional view taken along the line AA in FIG. 3, FIG. 6 is a cross-sectional view taken along the line BB in FIG. 3, FIG. 7 is an enlarged cross-sectional view of the door of the refrigerator, and FIG. FIG.

  1 and 2, the refrigerator body 1 includes a metal (for example, iron plate) outer box 2 that opens forward, a resin (for example, ABS) inner box 3, and these outer box 2 and inner box 3. It consists of a foam heat insulating material 4 such as hard foam urethane filled in 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 10 will be described with reference to FIGS. The doors 11 to 14 other than the door 10 have the same configuration.

  3 to 8, reference numeral 23 denotes an inner box frame which is positioned 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 surface of the inner box frame 23, and is formed of ABS resin. Reference numeral 25 denotes a transparent front plate (hereinafter referred to as a glass plate) such as a glass plate laminated on the edge frame 24 so as to cover the inner box frame 23. In this embodiment, it is formed of a glossy tempered glass plate. It is. 26 is a hard foam urethane filled and foamed in the space between the glass plate 25, the inner box frame 23 and the edge frame 24, and is bonded to the glass plate 25 together with the inner box frame 23 and the edge frame 24 by foaming, The glass plate 25 is adhered and held. A double-sided tape 27 bonds the glass plate 25 and the edge frame 24 of the inner box frame 23.

  Here, on the inner surface of the glass plate 25, that is, the adhesive surface with the urethane foam 26, a coating layer 31 silk-printed with an organic paint, for example, a paint made of polyester resin, is formed. This coating layer 31 is formed by removing the conventional antifoaming agent, that is, not containing the antifoaming agent. The term "does not contain an antifoaming agent" as used herein means that it contains substantially no antifoaming agent, and includes those that are unintentionally mixed with a slight amount of antifoaming agent. It does not mean that it does not contain purely at all.

  On the other hand, the urethane foam 26 has the foam stabilizer 32 as before, and forms closed cells, in particular, fine closed cells in a portion that becomes an adhesive surface with the glass plate 25. As described above, the foam stabilizer 32 is made of a silicone foam stabilizer having a chemical structure mainly composed of a hydrophobic group polydimethylsiloxane and a hydrophilic group.

  Further, the edge frame 24 of the inner box frame 23 does not have the glass plate insertion portion as described in the conventional example, and the outer edge of the glass plate 25 is the end face of the edge frame 24 as shown in FIG. The configuration is such that it is the same as or slightly inward of 24a, in this embodiment only slightly inward.

  In addition, in this embodiment, an annular convex portion 33 surrounding the outer periphery of the glass plate 25 is formed from the edge frame 24 of the inner box frame 23, and as shown in FIG. It is formed with a size that does not substantially pop out (for example, a protruding size within 2 mm forward from the front surface of the glass plate 25), and the portion that overlaps the lower end surface of the glass plate is a transparent front plate support piece (hereinafter referred to as a glass plate). It is configured to support the weight of the glass plate 25 (referred to as a support piece) 33b.

  The operation and action of the refrigerator configured as described above will be described below. The door 10 of the refrigerator has a coating layer 31 formed on the adhesive surface with the foamed urethane 26 on the inner surface of the glass plate 25. Since the surface does not contain an agent, the surface of the urethane foam 26 to be bonded to the coating layer 31 is in a skin layer state in which fine closed cells are regularly formed, and the closed cells are broken by the antifoaming agent and connected. The formation of voids is suppressed. Therefore, the urethane foam 26 is adhered to the coating layer 31 while the entire surface in contact with the coating layer 31 remains a skin layer formed of closed cells, and the adhesive strength becomes strong. Therefore, the adhesive strength between the glass plate 25 and the urethane foam 26 can be maintained and guaranteed over a long period of time, and the reliability can be improved.

  That is, if there is an antifoaming agent on the side of the glass plate 25 in contact with the urethane foam 26, as described above, this antifoaming agent defoams the fine closed cells of the urethane foam 26, and this portion becomes a cavity. Although the adhesive area of the urethane foam 26 is reduced, the coating layer 31 containing no antifoaming agent is provided on the glass plate 25 side that adheres to the urethane foam 26. This prevents the foam from being broken and its adhesive strength becomes strong. Thereby, the adhesive strength of the glass plate 25 by the foamed urethane 26 can be maintained and secured over a long period of time, and the reliability can be improved.

  Furthermore, in this embodiment, since the glass plate 25 is bonded to the edge frame 24 via the double-sided tape 27 in addition to the adhesion to the urethane foam 26, it is strong against both the urethane foam 26 and the edge frame 24. The adhesion strength of the glass plate 25 can be maintained and secured over a longer period, and the reliability can be further improved.

  On the other hand, since the door can abolish the conventional glass plate insertion portion that covers the peripheral edge of the glass plate by maintaining the adhesive strength, it does not impair the design like the one with the glass plate insertion portion. It is possible to have a clean appearance with a flat feeling on the entire surface. In addition, dust and dust adhere to and accumulate on the boundary between the glass plate insertion part and the glass plate surface, and this does not stand out linearly, maintaining the initial high design as it is for a long time can do.

Of the annular projections 33 provided on the edge frame 24 of the inner box frame 23, at least a portion located on the lower end surface of the glass plate 25 is superposed on the lower end surface of the glass plate 25, and the glass plate 25 is its weight. Even if it is slightly deviated, the lower end of the glass plate is received and supported, so that abnormal situations such as slipping of the glass plate 25 can be surely prevented, and the sense of security is greatly improved. Since it does not pop out from the front surface, it can be seen from the front surface of the door unlike the glass plate insertion portion, and the design can be kept good.

  In addition, since the outer peripheral edge of the glass plate 25 is positioned slightly inside the end surface 24a of the edge frame 24, the outer peripheral edge of the glass plate 25 is protected by the end surface 24a of the edge frame 24 and the annular protrusion 33. Will do. 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.

(Embodiment 2)
In the second embodiment, the coating layer 31 described in the first embodiment is constituted by a vapor deposition layer. Although it does not specifically limit as a vapor deposition layer, For example, metal, such as gold, silver, platinum, aluminum, and titanium, oxides, such as silica, titanium oxide, niobium pentoxide, and magnesium fluoride, fluoride, etc. A vapor-deposited layer is included and no antifoaming agent is contained.

  In the case of this embodiment as well, the foamed urethane 26 is not broken by the antifoaming agent as in the first embodiment, so that the adhesive strength between the glass plate 25 and the urethane foam 26 can be maintained and guaranteed over a long period of time. it can. Moreover, if the glass plate 25 has a unique design of the vapor deposition layer, for example, a silver vapor deposition layer, a mirror surface design can be imparted, and the design can be further enhanced.

  Other configurations and effects are the same as those in the first embodiment, and a description thereof will be omitted.

(Embodiment 3)
FIG. 9 is an enlarged cross-sectional view of a portion corresponding to FIG. 7A of the door in the third embodiment.

  In this embodiment, the colored coating layer 29 containing the antifoaming agent 30 is formed on the glass plate 25 side of the coating layer 31 of the glass plate 25. The colored coating layer 31 is also formed by silk printing an organic paint, for example, a paint made of a polyester resin.

  The antifoaming agent 30 is generally incompatible with the coating composition, and because of the incompatibility, the foam formed in the coating composition is broken to clean the coating surface without bubbles. And On the other hand, although the antifoaming agent 30 is not visible at all from the outside, it bleeds out to the coating surface of the colored coating layer 29 over time. Since the coating layer 31 which does not contain is located, it has no influence on the foam regulation of the urethane foam 26. As the antifoaming agent 30 of the colored coating layer 29 of this embodiment, the most common silicone-based antifoaming agent for organic solvent-based paints such as dimethyl silicone oil is used.

  In the above-described configuration, the door of this embodiment also maintains the adhesive strength between the glass plate 25 and the foamed urethane 26 over a long period of time because the foamed foam 26 is not broken by the antifoaming agent as in the first embodiment. Can be guaranteed. Moreover, in the case of this embodiment, the glass plate 25 forms the colored coating layer 29 containing the antifoaming agent 30 on the side of the glass plate 25 with respect to the coating layer 31, so that the antifoaming agent 30 from the appearance. The colored coating layer 29 is now visible. In this colored coating layer 29 containing the antifoaming agent, the foam generated during coating is defoamed by the defoaming agent 30 and no bubbles remain, so the surface of the coating becomes glossy and glossy. The appearance design is greatly improved as compared with a pre-painted plate made of metal or resin.

  Furthermore, in this embodiment, if the vapor deposition layer 28 is further formed on the glass plate 25 side of the colored coating layer 29 as shown by the dotted line in FIG. 9, the color of the colored coating layer 29 on the back side of the vapor deposition layer 28. It is possible to create a unique design through which can be seen through, and to further improve the design.

  Other configurations and effects are the same as those in the first embodiment, and a description thereof will be omitted.

(Embodiment 4)
FIG. 10 is an enlarged cross-sectional view of a portion corresponding to FIG. 7A of the door in the fourth embodiment.

  In the fourth embodiment, a transparent film 34 is attached to and attached to a glass plate 25, and a coating layer 31 containing no antifoaming agent is printed on the film 34.

  In the case of this embodiment as well, since the foamed urethane 26 is not broken by the antifoaming agent as in the first embodiment, the adhesive strength between the glass plate 25 and the urethane foam 26 can be maintained and guaranteed over a long period of time. . In addition, since the film 34 is attached to and attached to the glass plate 25, even if the glass plate 25 is broken by an external force, it is possible to prevent the fragments from scattering and improve the safety.

  Other configurations and effects are the same as those in the first embodiment, and a description thereof will be omitted.

(Embodiment 5)
FIG. 11 is an enlarged cross-sectional view of a portion corresponding to FIG. 7A of the door in the fifth embodiment.

  In the fifth embodiment, a transparent film 34 is pasted and attached to the glass plate 25, and a colored coating layer 29 including an antifoaming agent 30 is printed on the film 34 together with a coating layer 31 not including an antifoaming agent. Is.

  In the case of this embodiment as well, since the foaming of the foamed urethane 26 by the antifoaming agent 30 is eliminated as in the case of the third embodiment, it is possible to maintain and guarantee the adhesive strength between the glass plate 25 and the foamed urethane 26 over a long period of time. In addition, by providing the colored coating layer 29, the design can be improved, and since the film 34 is attached to and attached to the glass plate 25, the glass plate 25 may break due to external forces. Even if it exists, the fragments can be prevented from being scattered, and safety is improved.

  Other configurations and effects are the same as those in the first embodiment, and a description thereof will be omitted.

  As mentioned above, although the refrigerator concerning this invention was demonstrated using the said embodiment, this invention is not limited to this. That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  As described above, the present invention improves the designability using a transparent front plate, and can maintain and guarantee the adhesive force between the transparent front plate and polystyrene foam over a long period of time. Refrigerator can be provided, and can be widely applied to commercial refrigerators and wine coolers as well as general ones.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Foam heat insulating material 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 23 Inner box frame 24 Edge frame 24a End face 25 Transparent front plate (glass plate)
26 Foam urethane 27 Double-sided tape 28 Vapor deposition layer 29 Colored coating layer 30 Defoaming agent 31 Coating layer 32 Foam stabilizer 33 Annular projection 33b Transparent front plate support piece (glass plate support piece)
34 films

Claims (7)

A refrigerator including a door formed by bonding and integrating a transparent front plate and urethane foam, wherein the transparent front plate has a coating layer on the urethane foam side, and the coating layer is a closed cell of urethane foam A refrigerator that does not contain a defoaming material that breaks bubbles. The refrigerator according to claim 1, wherein a colored coating film layer containing an antifoaming agent is formed on the transparent front plate side of the coating layer of the transparent front plate. The refrigerator according to claim 1 or 2, wherein the coating layer formed on the transparent front plate is a vapor deposition layer. A refrigerator is provided with a door formed by attaching a film to a transparent front plate and bonding and integrating the transparent front plate and urethane foam through the film, and the film forms a coating layer on the surface of the urethane foam side. In addition, the refrigerator has a configuration in which the coating layer does not include a defoamer that breaks closed cells of urethane foam. The refrigerator according to claim 4, wherein the film is formed with a colored coating layer containing an antifoaming agent on the transparent front plate side of the coating layer. The refrigerator according to any one of claims 1 to 5, wherein the transparent front plate has an outer peripheral portion bonded to a door frame. A transparent front plate support piece that overlaps with the lower end surface of the transparent front plate is provided at least at a portion of the edge frame of the inner box frame that is positioned on the lower end surface of the transparent front plate. The refrigerator of any one of Claims 1-6.