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Cold storage

A technology for a refrigerator and a transparent front panel, applied in the field of refrigerators, can solve problems such as deterioration, difficulty in ensuring long-term bonding strength, and deviation of bonding strength, and achieve the effect of high design.

Active Publication Date: 2016-08-24
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it can be known that it is difficult to ensure the bonding strength between the front panel 104 having the colored glass panel 103 and the urethane foam 107 for a long period of time.
[0012] In addition, the adhesive strength between the colored layer 102 formed on the colored glass plate 103 by screen printing and the like and the colored glass plate 103 varies.
Therefore, it can be known that the adhesive state between the colored layer 102 and the colored glass plate 103 deteriorates due to heat shrinkage of the polyurethane foam 107, aging, etc., and the colored layer 102 is peeled off from the colored glass plate 103 together with the polyurethane foam 107.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0039] figure 1 It is the external appearance perspective view of the refrigerator which concerns on 1st Embodiment of this invention, figure 2 It is a cross-sectional view of the refrigerator according to the first embodiment of the present invention, image 3 It is a perspective view of the door of the refrigerator which concerns on 1st Embodiment of this invention. also, Figure 4 It is an exploded perspective view of the door of the refrigerator of the first embodiment of the present invention, Figure 5 It includes an enlarged view of the main part image 3 5-5 Sectional Drawing of, Figure 6 yes image 3 6-6 Sectional Drawings. also, Figure 7 It is an explanatory drawing explaining the method of affixing double-sided tape to the edge frame of the refrigerator which concerns on 1st Embodiment of this invention, Figure 8 It is an enlarged cross-sectional view showing a door end of the refrigerator according to the first embodiment of the present invention.

[...

no. 2 approach

[0076] Figure 9 It is a sectional view of the door of the refrigerator of 2nd Embodiment of this invention. This embodiment further improves the adhesive force between the resin film 27 of the transparent front plate 25 and the urethane foam 29 .

[0077] That is, the easily bonding layer 32 is formed on the surface of the resin film 27 on the polyurethane foam 29 side, and the resin film 27 and the polyurethane foam 29 are bonded via the easily bonding layer 32 .

[0078] The easily bonding layer 32 can be formed by subjecting the surface of the resin film 27 to corona treatment or plasma treatment, or by applying polyester resin or acrylic resin.

[0079] When the bonding surface of the resin film 27 and the urethane foam 29 is observed microscopically, the surface layer of the urethane foam 29 and the resin film 27 are adhered together. Since the surfaces of both the surface layer of the urethane foam 29 and the resin film 27 are smooth, there is a possibility that if pe...

no. 3 approach

[0087] Next, a refrigerator according to a third embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to this embodiment.

[0088] In addition, the same code|symbol is attached|subjected to the same structure as the refrigerator which concerns on 1st Embodiment of this invention, and description is abbreviate|omitted.

[0089] Figure 10 It is a cross-sectional view including an enlarged view of main parts of the door 10 of the refrigerator according to the third embodiment of the present invention. In the refrigerator of the present embodiment, the adhesive force between the resin film 27 and the urethane foam 29 of the transparent front panel 25 made of a glass plate or the like of the door 10 is further increased.

[0090] That is, the adhesive 26a is also applied to the surface of the resin film 27 on the urethane foam side, and the urethane foam is filled from above the adhesive 26a to bond the ...

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Abstract

A door includes: inner box frame (23) which is positioned inside a refrigerator body; and transparent front plate (25) provided with colored layer (28) disposed on edge frame (24) of inner box frame (23) such that transparent front plate (25) covers inner box frame (23). The door further includes urethane foam (29) filled and foamed in a space defined by transparent front plate (25) and inner box frame (23). Transparent front plate (25) is bonded to and held by urethane foam (29), and an outer peripheral portion of transparent front plate (25) is bonded to edge frame (24) of inner box frame (23) by double-sided tape (30).

Description

technical field [0001] The present invention relates to a refrigerator, in particular to a door structure of the refrigerator. Background technique [0002] Generally, such a refrigerator is configured such that a refrigerator compartment, a freezer compartment, a vegetable compartment, and the like are provided in a heat-insulating refrigerator main body, and these refrigerator compartments, freezer compartments, and vegetable compartments can be opened and closed by doors. [0003] The door includes: a front panel serving as a front surface of the main body of the refrigerator; an inner box frame serving as an inner surface of a refrigerator compartment, a freezer compartment, a vegetable compartment, and the like; and a frame that integrally connects the front panel and the inner box frame. In addition, the door has foam-filled polyurethane in the space formed by the front panel, the inner box frame, and the frame body, and has the same heat insulation performance as the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D23/02
CPCF25D23/02F25D2400/18
Inventor 栗田润一
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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