JPS61116273A - Heat-insulating box body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat insulating box for use in refrigerators, freezers, showcases, bookstores, etc.

Conventional structure and its problems In recent years, in order to increase the ratio of the internal volume to the external volume of the insulating box (hereinafter referred to as internal volume efficiency), the heat dissipation pipe of the cooling system has been moved from outside the insulating box to the outer box of the insulating box. Methods are being taken to fix the structure and increase the internal volume. The conventional heat insulating box will be described below with reference to FIGS. 2 to 7.

Reference numeral 1 denotes a heat insulating box body, and a space formed by an outer box 2 and an inner box 3 is filled with a foamed heat insulating material 4 such as urethane.

A compressor 6 constituting a cooling system is installed in the heat insulating box 1, and a heat dissipation pipe 6 is fixed to the outer box 2 with a fixing material 7 having good thermal conductivity such as aluminum tape. A heat insulator pack 8 is fixed onto the vibro with an auxiliary material such as tape.

Next, the operation of the above conventional example will be explained.

The heat dissipation vibro is fixed to the outer box 2 with aluminum tape, etc. 7 because the heat dissipation pipe becomes 10 to 20°C higher than the outside air temperature, and this heat is transferred to the outer box 2 using the aluminum tape, etc.
This is to dissipate heat from the - From the standpoint of thermal insulation, since there is a heat dissipation vibro, the temperature inside the refrigerator must be kept constant compared to a case without heat dissipation pipes, so
Items with a temperature difference of ~20'C must be insulated,
It is necessary to make the insulation wall thicker than that without the heat dissipation pipe, and as a method of making the insulation box 1 without reducing the internal volume, it is necessary to make the insulation wall thicker than the foam insulation material 4. Insulation with reduced pressure by inserting filler 10.

It has been proposed to use a body pack 8. However, even if the heat insulator pack 8 is provided on the pipe and fixed with an auxiliary material 11 such as tape, a space 12 is created between the vibros and the insulators 7 and 8. Foam insulation material 4
Even if the space 12 is filled with vibro and insulation pack 8
Even if it does get in, one side is blocked by the vibro, but the foamed heat insulating material 4 enters from both sides at the same time, and there is no air vent, so an unfilled part 13 is created. The foaming agent accumulated in the unfilled portion 13 causes the unfilled portion 13 to be in an overpressure or depressurized state due to a change in outside temperature, giving unevenness to the outer box or inner box, resulting in a problem that the appearance of the product deteriorates.

Purpose of the Invention The present invention eliminates the drawbacks of the above-mentioned conventional examples, and eliminates the appearance of irregularities that occur around the outer box or inner box to which the pipe is fixed, which occurs when a pipe and a heat insulator pack are used. purpose.

Structure of the Invention In order to achieve the above object, the present invention wraps the surface between the pipes with a foamed adhesive so that no space is created between the pipe and the outer box or the inner box and the heat insulator. It has no irregularities in appearance.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1, but components that are the same as those of the prior art will be denoted by the same reference numerals and detailed explanations thereof will be omitted.

Reference numeral 14 fixes the heat insulator pack to the outer box 2 by filling the vibro with an adhesive containing bubbles such as foamed hot melt.

Next, the operation of the embodiment will be explained.

After the vibro is fixed to the outer box 2 with the fixing material 7, the adhesive 14 is sprinkled on the vibro and between the vibro and the vibro, and the air bubbles inside the adhesive increase the volume of the vibro and fill the space between the vibro and the pipe. Bury it, and bury your vibro too. Thereafter, the heat insulator pack 8 is fixed by pressing it against the adhesive. In this way, the adhesive 14 is attached to the vibro and pipe e.
In order to fill the space between the insulation pack 2, the vibro and the outer box 2, when the insulation pack 8 is fixed, the adhesive 1
4 and no space is created, so when the outer box 2 and the inner box 3 are filled with the foamed heat insulating material 4, no unfilled portion 13 is formed, and therefore no unevenness occurs in the appearance and the quality is stable. Furthermore, since the adhesive 14 contains air bubbles, convection is difficult to occur and the conductive area of the adhesive itself is small, resulting in poor heat transfer, which prevents the heat of the vibro from dissipating into the interior.

Effects of the Invention Since the present invention has the above-described configuration, the adhesive containing air bubbles easily fills the space between the pipes and does not leave any unfilled areas in the foam insulation material, thereby eliminating the appearance of unevenness. quality is stable. In addition, the adhesive material containing air bubbles is less likely to cause convection, and the conductive area of the adhesive material itself is also reduced, so that the heat insulating property is improved.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a heat insulating box showing an embodiment of the present invention, Fig. 2 is a perspective view of a refrigerator using a conventional heat insulating box, and Fig. 3 is a perspective view of a refrigerator using a conventional heat insulating box.
The figure is a sectional view of the main part, Fig. 4 is a sectional view of a conventional insulation box with a punctured insulator, Fig. 6 is a perspective view of the same, Fig. 6 is an enlarged sectional view of the main part, and Fig. 7 6 is an enlarged sectional view of the main part at a different position from FIG. 6. 1...Insulated box body, 2...Outer box, 3...
...Inner box, 4...Foam insulation material, 6...
...Pipe, 14...Adhesive material. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 4
Figure 5

Claims (1)

[Claims] A pipe is fixed to an outer box or an inner box, the space formed by the outer box and the inner box is filled with a heat insulator pack and a foamed heat insulating material, and the surface between the pipes is wrapped with an adhesive containing air bubbles to form a heat insulator. A heat-insulating box body characterized by a fixed pack.