KR20080038676A - Thermal insulating assembly for refrigerator - Google Patents

Abstract

An insulating assembly for a refrigerator is provided to improve an effect of heat insulation while reducing an installation space by maintaining a vacuum state even though the insulating assembly is relatively thin, and to improve the reliability in spite of a temperature variation by maintaining an adhesion state of a plate and a vacuum insulator by melting and solidifying hot melt adhesives when the plate and the vacuum insulator expand or contract in accordance with the temperature variation. An insulating assembly(100) for a refrigerator includes a plate(110), a vacuum insulator(120) having a hermetically sealed vacuum space, and hot melt adhesives(130) adhering the vacuum insulator to the plate. The vacuum insulator includes a pair of thin plates(121,122) sticking together to form the hermetically sealed vacuum space, a supporter supporting the vacuum space in the vacuum space, and an absorbent embedded in the vacuum space for removing moisture.

Description

Thermal insulation assembly for refrigerators {THERMAL INSULATING ASSEMBLY FOR REFRIGERATOR}

1 is a view showing a typical refrigerator.

Figure 2 is a view showing an insulating structure for a refrigerator which is an embodiment of the prior art.

Figure 3 is a view showing an insulation assembly for a refrigerator which is an embodiment of the present invention.

Figure 4 is a view showing the installation structure of the heat insulating assembly for a refrigerator of one embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

100: heat insulation assembly 110: plate

120: vacuum insulation 130: hot melt adhesive

The present invention relates to a thermal insulation assembly for a refrigerator that more effectively insulates the freezer compartment and the refrigerating compartment from outside air.

Generally, a refrigerator is a device used for long-term storage of fresh food, and includes a freezer compartment for freezing food, a refrigerating chamber for refrigerating plants, and a freezing cycle for cooling the freezer and refrigerator compartment. Operation is controlled by the controlled controller.

1 is a view showing a typical refrigerator, Figure 2 is a view showing a heat insulating structure for a refrigerator which is an embodiment of the prior art.

As shown in FIGS. 1 and 2, the refrigerator according to the prior art may be freely opened and opened in the refrigerator main body 1 and the refrigerator main body 1 in which the freezing compartment F and the refrigerating chamber R are formed on both sides side by side. It consists of a freezer compartment door (2) and the refrigerator compartment door (3), the heat insulating material is foam-molded on the wall surface of the refrigerator body (1) and inside the doors (2, 3).

Of course, one side of the refrigerator main body 1 has a compressor, a condenser, a capillary tube or an electronic expansion valve, an evaporator, and a cold air circulation passage (not shown) in which cold air heat-exchanged from the evaporator is supplied to the freezing chamber F and the refrigerating chamber R. Is provided.

More specifically, the refrigerator body 1 is composed of an outer wall 1a, a freezer compartment inner wall 1b, and a refrigerating compartment inner wall 1c, and a heat insulating material A in the space between the outer wall 1a and the inner walls 1b, 1c. Is foam molded.

In addition, the freezer door 2 includes an outer wall 2a forming a front surface, an inner wall 2b contacting the freezing chamber F, and a basket 2c fixed to the inner wall 2b to accommodate food and the like, and an outer wall. The heat insulating material A is foam-molded in the space between 2a and the inner wall 2b.

Similarly, the refrigerating compartment door 3 also includes an outer wall 3a, an inner wall 3b, a basket 3c, and the like, and the heat insulating material A is foam-molded in the space between the outer wall 3a and the inner wall 3b.

However, the conventional insulation structure for a refrigerator as described above simply insulates only with a heat insulating material installed inside the wall or door of the refrigerator body, so that the thickness of the heat insulating material is increased to maximize the heat insulating effect, thereby increasing the size of the refrigerator unnecessarily. There is a problem.

Therefore, in recent years, a thermal insulation assembly in which a vacuum insulation material is attached to an iron plate through a general adhesive is inserted into an inner wall or a door of a refrigerator main body. Therefore, the adhesive between the vacuum insulator and the iron plate is difficult to maintain the adhesive force, there is a problem that can be separated between the vacuum insulation and the iron plate as well as reduce the reliability of the product.

The present invention has been made to solve the above problems of the prior art, it is an object of the present invention to provide a heat insulating assembly for a refrigerator that can increase the heat insulation effect, reduce the installation space, and can flexibly respond to temperature changes.

The present invention for solving the above problems plate; A vacuum insulator having a sealed vacuum space formed therein; And, it provides a heat insulating assembly for a refrigerator comprising a; hot melt adhesive (Hotmelt Adhesives) for adhering the vacuum insulator to the plate.

In addition, the heat insulating assembly for a refrigerator provides a heat insulating assembly for a refrigerator, characterized in that embedded in the refrigerator wall or door.

In addition, the plate provides a heat insulating assembly for a refrigerator, characterized in that one side to which the hot melt adhesive is to be applied is washed with alcohol.

In addition, the vacuum insulator comprises a pair of thin plates to be bonded to each other so that a closed vacuum space is formed therein; A support for supporting a vacuum space in the vacuum space; And, it provides a heat insulating assembly for a refrigerator, characterized in that it comprises a; adsorbent is built in the vacuum space to remove moisture.

In addition, the hot-melt adhesive provides a heat insulating assembly for a refrigerator, characterized in that the plate and the vacuum insulator are respectively applied to the surface in contact with each other, and pressed.

In addition, the hot melt adhesive provides a thermal insulation assembly comprising butadiene, isoprene-based synthetic rubber (synthetic rubber) component.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a view showing a heat insulating assembly for a refrigerator according to an embodiment of the present invention, Figure 4 is a view showing the installation structure of the heat insulating assembly for a refrigerator according to an embodiment of the present invention.

3 and 4, the heat insulating assembly for the refrigerator is configured such that the vacuum heat insulating material 120 is attached to the plate 110 by hot melt adhesives 130, and the refrigerator body ( It is installed to be inserted into the inner wall or doors (102, 103) of 101.

More specifically, the plate 110 is made of a metal material, even if foreign matter such as oil, the surface to be applied hot melt adhesive 130 is washed with isopropyl alcohol (IPA), which is a kind of alcohol, Due to this, not only the surface of the plate 110 is cleaned, but also the surface roughness due to volatilization is increased to increase the adhesion.

Next, the vacuum insulator 120 is preferably formed to be flat so that the two thin metal sheets 121 and 122 are bonded to each other to form a sealed vacuum space therein and to be bonded to the plate 110. Therefore, it is more preferable that an adsorbent 123 such as silica gel is also provided to remove even if moisture is generated in the vacuum space.

At this time, the vacuum insulator 120 is preferably maintained in a vacuum state of about 0.0001 atm or less, and the support portion (not shown) is provided to reinforce the strength so that the thin thin plates 121 and 122 can maintain the vacuum state therein. More preferably.

Next, the hot melt adhesive 130 is composed of various thermoplastic materials of solid content that maintains a liquid state at a high temperature state but changes from a low temperature state to a solid state to generate an adhesive force, and each of the plate 110 and the vacuum insulator 120 is formed. It is preferable that the type of the hot melt adhesive 130 is determined in consideration of the properties of the material.

Preferably, the hot melt adhesive 130 is about 10 to 30% butadiene (Butadiene), isoprene-based synthetic rubber (Synthetic rubber), about 20 to 60% of styrene resin (Styrene Resin), 10 to 30 It may be composed of about 20% paraffin oil (Paraffin Oil), 20-40% paraffin wax (Paraffin Wax) and the like.

At this time, the hot melt adhesive 130 is applied to the plate 110 and the vacuum insulator 120 are in contact with each other, the vacuum insulator 120 is pressed to the plate 110 to provide an adhesive force therebetween.

The heat insulation assembly 100 configured as described above is configured to be inserted into the inner walls or the doors 102 and 103 of the refrigerator body 101 constituting the circumferential surface of the refrigerator, which will be described in more detail with reference to FIG. 4.

First, the refrigerator main body 101 includes an outer wall 101a, a freezer compartment inner wall 101b, and a refrigerating compartment inner wall 101c, wherein the heat insulation assembly 100 is inserted between the outer wall 101a and the inner walls 101b and 101c. , The remaining space is filled with insulation (A) such as styrofoam foamed.

In this case, the heat insulating assembly 100 is preferably disposed such that the plate 110 faces the outer wall 101a and the vacuum insulator 120 faces the inner walls 101b and 101c.

In addition, the freezer door 102 and the refrigerating compartment door 103 also include outer walls 102a and 103a, inner walls 102b and 103b, and baskets 102c and 103c, and the outer walls 102a and 103a and inner walls ( Insulation assemblies 100 are similarly inserted between 102b and 103b and the remaining space is filled with insulation A foamed.

Therefore, since the refrigerator is insulated by the insulation assembly 100 relatively thin and the insulation A foamed in the remaining space, the refrigerator can further increase the insulation effect and reduce the installation space.

In addition, when the refrigerator is used at a high temperature of 30 ° C. or more, the plate 110 is stretched, while the vacuum insulation 120 is contracted, and the hot melt adhesive 130 is partially melted to form a gap between the plate 110 and the vacuum insulation 120. A predetermined flow space can be secured to prevent the vacuum insulator 120 from falling from the plate 110, and when the temperature is changed to a low temperature again, the hot melt adhesive 130 hardens and the vacuum insulator ( 120 is fixed.

In the above, the present invention has been described in detail by way of examples based on the embodiments of the present invention and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

The insulation assembly for a refrigerator according to the present invention configured as described above can maintain a vacuum state even if it is relatively thin, and thus exhibit a high insulation effect, thereby increasing the insulation effect and reducing the installation space, thereby reducing the size of the refrigerator. There is an advantage to this.

In addition, the insulation assembly for a refrigerator according to the present invention fixes the plate and the vacuum insulator with a hot melt adhesive, so that even if the plate and the vacuum insulator expand or contract according to temperature change, the hot melt adhesive is also melted / solidified while the plate and the vacuum insulator are bonded to each other. By maintaining this, there is an advantage to increase the reliability of the product even with temperature changes.

Claims (5)

plate; A vacuum insulator having a sealed vacuum space formed therein; And, Hot melt adhesives (Hotmelt Adhesives) for attaching the vacuum insulation to the plate (Hotmelt Adhesives) comprising a. The method of claim 1, Further comprising; foam insulation to be foamed inside the outer wall of the refrigerator, Insulation assembly, characterized in that the plate and vacuum insulation is combined with the foam insulation to form the insulation assembly. The method of claim 1, Plate is made of iron plate, the heat insulating assembly for a refrigerator, characterized in that one side to be applied hot melt adhesive is washed with alcohol. The method of claim 1, The vacuum insulator includes a pair of thin plates that adhere to each other such that an enclosed vacuum space is formed therein; And an adsorbent embedded in a vacuum space to remove moisture. The method of claim 1, The hot melt adhesive is a butadiene, isoprene (Isoprene) Synthetic Rubber (Synthetic Rubber) of the heat insulating assembly comprising a component.

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