CN113390213A

CN113390213A - Heat insulation door and refrigerator with same

Info

Publication number: CN113390213A
Application number: CN202010905538.2A
Authority: CN
Inventors: 盐家洋一
Original assignee: Hitachi Global Life Solutions Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2020-03-13
Filing date: 2020-09-01
Publication date: 2021-09-14
Also published as: JP2021143799A; WO2021181720A1

Abstract

The invention provides a heat insulation door and a refrigerator with the same, which can inhibit the generation of air bubbles between an outer plate and a covering material caused by exhaust gas emitted by resin. The heat insulation door has: an outer plate made of resin; a covering material provided on the front surface side or the back surface side of the outer panel; and a gap provided between the outer panel and the covering material and communicating with the outside of the region between the outer panel and the covering material.

Description

Heat insulation door and refrigerator with same

Technical Field

The invention relates to an insulated door and a refrigerator with the same.

Background

As an exterior surface of a door of a refrigerator, a resin as disclosed in patent document 1 is proposed in addition to a steel plate and glass. Regarding a refrigerator having a door with an outer panel 17 made of transparent resin, patent document 1 discloses a structure in which an uneven portion is formed inside the outer panel 17 (claims 1, 8, 0010, 0017, fig. 4 and 5). The light injected into the outer panel 17 through the uneven portion is reflected to generate a pattern and a color having a three-dimensional effect.

Documents of the prior art

Patent document 1: japanese laid-open patent publication No. 2004-232887

In the case of manufacturing a door provided with a resin outer panel, a coating material such as a thinner film or another plate having a larger film thickness may be disposed on the outer panel. The present inventors have found that, in this case, there is a specific problem in the case of applying a resin outer panel. The resin outer panel may emit so-called exhaust gas such as moisture or gas. If the exhaust gas is generated between the outer panel and the covering material, which have low or no gas permeability due to physical properties, thickness, and the like, bubbles are formed by being trapped between the outer panel and the covering material.

Disclosure of Invention

In view of the above circumstances, the present invention is an insulated door including:

an outer plate made of resin;

a covering material provided on the front surface side or the back surface side of the outer panel; and

and a gap provided between the outer panel and the covering material and communicating with the outside of a region between the outer panel and the covering material.

Drawings

Fig. 1 is a front view of a refrigerator of an embodiment.

Fig. 2 is an exploded perspective view of the heat insulation door according to the embodiment.

Fig. 3 is an enlarged perspective view of a main portion including a side end of the heat insulation door of the embodiment.

Fig. 4a is a side sectional view of a main part of the insulated door of the embodiment, and is an I-I sectional view of fig. 3.

Fig. 4b is a side sectional view of a main part of an insulated door of another embodiment, and is a sectional view I-I of fig. 3.

In the figure: 1-refrigerator (equipment), 2a, 3 a-insulated door, 10-outer panel (substrate), 20-door frame, 30-vacuum insulation material, 40-space, 50-foam insulation material, 60-inner panel, 70-adhesive, 80a, 80 b-printed layer, 90-anti-scatter film (cover), S-space, V-outer panel and area between the cover.

Detailed Description

[ refrigerator 1]

Fig. 1 is a front view of a refrigerator 1 of an embodiment of the present invention.

The refrigerator 1 includes a refrigerating chamber 2, an ice making chamber 3, a switching chamber 4, a lower-stage freezing chamber 5, and a vegetable chamber 6. The refrigerator 1 includes: rotary (hinge)

heat insulation doors

2a, 2b for opening and closing the refrigerating compartment 2; a pull-out type heat insulation door 3a for opening and closing the ice making chamber 3; a pull-out type heat insulation door 4a for opening and closing the switching chamber 4; a pull-out type heat insulation door 5a for opening and closing the lower freezing chamber 5; and a pull-out type heat insulation door 6a for opening and closing the vegetable compartment 6.

[ Heat insulation door ]

Fig. 2 is an exploded perspective view of a heat insulating door as an example of an object having a printed matter of a resin base material of the embodiment. Fig. 3 is an enlarged perspective view of a main part including a side end of the heat insulation door 3a of the embodiment. Fig. 4a and 4b are side sectional views of main portions of the heat insulation door of the embodiment and other embodiments, respectively, and are sectional views I-I of fig. 3.

The heat insulation door 2a will be described below, but other doors can be configured at least as a printed matter in the same manner.

The heat-insulating door 2a includes an outer panel 10 as an example of a resin base material provided on a surface (front surface) of the heat-insulating door 2a, a door frame 20 provided on a peripheral edge of the outer panel 10, and an inner panel 60 provided on a back side of the outer panel 10. In the space 40 surrounded by the outer panel 10, the door frame 20, and the inner panel 60, for example, the vacuum heat insulator 30 and the foamed heat insulator 50 can be provided as heat insulators.

(outer plate 10)

The outer panel 10 is a member that forms an appearance surface on the front surface (front surface) of the heat insulation door 2 a. For the outer panel 10, any resin such as PC (polycarbonate), PMMA (acrylic), ABS (acrylonitrile-butadiene-styrene copolymer) resin, or the like can be used. Therefore, the outer panel 10 becomes a generation source of the exhaust gas. On the back surface of the outer panel 10, printed layers 80a and 80b and a scattering prevention film 90 as an example of a cover material 90 are arranged in the order of proximity to the outer panel 10.

When the outer panel 10 is thin, appearance defects such as chemical cracks due to a solvent in the paint and deformation due to heat during drying are likely to occur, and therefore the resin thickness is preferably 1.0mm or more. When the material of the outer sheet 10 is PP resin or the like, the adhesion is insufficient, and therefore, primer coating, plasma processing, or other treatment may be performed.

(printing layer 80)

The printing layers 80a and 80b may be applied by ink coating, ink jet printing, coloring, or pasting of a printed film. The printing layers 80a and 80b may include a transparent coating layer, a glossy material, and the like. The printed layers 80a and 80b and the covering material 90 may be the front surface side of the outer panel 10 or the back surface side of the outer panel 10. The printing layers 80a and 80b are mainly made of resin and have air permeability.

As illustrated in fig. 4a and 4b, the printing layer 80a is formed as a substantially uniform flat layer that represents a base color and a basic texture over the entire area of the heat insulating door 3a when viewed from the front. On the other hand, the printed layer 80b is formed by coloring, printing, or painting a plurality of dots, lines, or planes, not a flat layer printed in a layer. In contrast, as illustrated in fig. 4b, the printed layers 80a and 80b may have features opposite to each other.

(covering Material 90)

The covering material 90 may be a planar or plate-like member that covers substantially the entire front surface side or back surface side of the outer panel 10. In the present embodiment, the printed layers 80a and 80b are provided on the opposite side of the outer panel 10.

The function to be exerted by the covering material 90 is not particularly limited, but in the present embodiment, a gas impermeable scattering protective film is used that suppresses scattering of resin when the outer panel 10 is broken. Further, the heat insulating material may be used for reinforcement or for providing peelability to the

heat insulating material

30 or 90. The cover member 90 includes an adhesive layer and is bonded to the outer panel 10. For example, the adhesive layer is gas impermeable.

The covering material 90 preferably has transparency, translucency or light-transmitting properties so that the user can visually confirm the outer panel 10, the printed layers 80a, 80 b.

Further, the covering material 90 may be integrated with the printed layer 80 by printing the covering material 90.

(gap S)

In the region V between the outer panel 10 and the covering material 90, at least one of the printing layers 80a and 80b is printed in a plurality of dot, line, or plane shapes, thereby providing a space S through which gas can pass. Since the outer panel 10, particularly the adhesive layer of the covering material 90, is gas-impermeable, when the exhaust gas is generated in the region V between them as shown by the broken line, the gas is likely to be trapped in the region V.

In the example of fig. 4, the void S is formed by surrounding a part or all of the outer panel 10, the printed layer 80a, the printed layer 80b, and the covering material 90 in the extending direction cross section (the cross section shown in fig. 4a and 4 b). As illustrated in fig. 3, the extended space S reaches the side end of the heat insulation door 3a, where it communicates with the outside of the region V. That is, even if the exhaust gas of the outer panel 10 is generated in the region V, the exhaust gas can be released to the outside of the region V through the gap S. Therefore, it is possible to suppress the generation of unexpected air bubbles due to the exhaust gas, the floating of the covering material 90, and the deterioration of the aesthetic appearance of the outer panel 10 or the heat insulating door. The space S may be a position where the exhaust gas generated in the region V between the outer plate 10 and the covering material 90 can be released outside the region.

Such a space S can be provided by adjusting the design of the printing layer 80. For example, the space S generated by the distribution of the non-flat printed layer 80b of fig. 4a or the printed layer 80a of fig. 4b preferably reaches the side end of the heat insulating door 3 a.

(modification of the covering Material 90)

The covering material 90 itself may be provided with a hole (not shown) so as to cover the outer panel 10 with the respective holes, within a range that satisfies the function expected of the covering material 90. Even in this way, the inside and outside of the region V between the outer panel 10 and the covering material 90 can communicate in the thickness direction of the heat insulating door 2a via the void, and therefore the exhaust gas of the outer panel 10 is released outside the region V. In this case, the space S may not extend to the side end of the heat insulation door 2 a.

When the covering member 90 itself is provided with the holes, since the positions where the voids S are formed can be varied according to design, it is preferable to provide a plurality of holes over substantially the entire area of the covering member 90. For example, circular holes arranged in a lattice shape may be arranged.

(doorframe 20)

The door frame 20 is a frame-shaped member along each of the four side surfaces of the outer panel 10, and is formed by combining a frame member 21 formed along the right edge of the outer panel 10, a frame member 22 formed along the left edge of the outer panel 10, a frame member 23 formed along the upper edge of the outer panel 10, and a frame member 24 formed along the lower edge of the outer panel 10. The door frame 20 is formed of, for example, ABS resin or PP (polypropylene) resin.

(vacuum insulation 30, foam insulation 50, inner plate 60)

The vacuum heat insulating material 30 is formed to have a length in the left-right direction (width direction) shorter than that of the outer panel 10.

Depending on the foaming conditions of the foamed heat insulating material 50 foamed and filled in the space 40, the voids S may be deformed by the foaming pressure. In order to avoid this, the protective member 100 may be provided at a position where the outer panel 10 and the foamed heat insulating material 50 may contact each other, so that the outer panel 10 and the foamed heat insulating material 50 do not contact each other. As the protective member 100, a cushion material such as an adhesive tape, a resin material such as a hot melt adhesive or an elastomer, or the like can be used.

The outer panel 10 or the covering material 90 can be bonded to the vacuum heat insulating material 30 with a known adhesive such as a hot melt adhesive. The vacuum heat insulating material 30 may be fixed to the door frame 20 instead of or in addition to the adhesive.

The inner panel 60 is a resin (ABS or the like) panel member provided on the storage compartment side of the heat insulation door 2 a. The inner plate 60 is fixed to the peripheral edge portion on the rear side of the door frame 20.

In the above-described embodiments, the heat insulating door is taken as an example, but the same technical idea can be applied to a resin base material on which a covering material is disposed.

Claims

1. A heat-insulating door is characterized in that,

comprising:

an outer plate made of resin;

2. The insulated door of claim 1,

the gap extends along the outer panel in a front view or a rear view of the outer panel and reaches a side end of the heat insulation door.

3. The insulated door according to claim 1 or 2,

the covering material has a void that communicates the void with the outside of the region in the thickness direction of the heat insulating door.

4. The insulated door according to any one of claims 1 to 3,

the adhesive layer is located on the opposite side of the outer panel with the gap therebetween.

5. A refrigerator is characterized in that a refrigerator body is provided with a refrigerator door,

a heat-insulating door according to any one of claims 1 to 4.