JPH0242296A - Heat insulating body - Google Patents

Abstract

PURPOSE:To improve adhesion of a foamed substance to outer and inner plates and to ensure strength by a method wherein in a device which is formed with outer and inner plates and a foamed substance and the interior of which is reduced in a pressure, a valve is situated to a part of the outer or the inner plate. CONSTITUTION:An insulating body 7 is formed such that a space formed with outer and inner plates 2 and 3 is filled with a foamed substance 8, e.g. a continuous bubble foamed substance, having breathability. In order to reduce the pressure of the interior of the foamed substance 8, an opening part 9 is previously formed in the outer plate 2, and a valve 10 is mounted therein. Gas in the foamed substance 8 of the heat insulating body 7 is exhausted through the valve 10 with the aid of a vacuum pump, and filling with the foamed substance 8 is executed in a state that the foamed substance is adhered to the inner and outer plates 3 and 2.

Description

[Detailed description of the invention] It is related to.

Prior Art FIG. 2 shows a conventional heat insulator plate. The configuration of this conventional example will be explained below with reference to FIG. 2.

1 is a heat insulating board, and outer panel 2 and AB are made by processing and painting an iron plate.
A container 4 made of a resin-metal laminate film having gas barrier properties is placed inside an inner plate 3 molded with S resin or the like.
The container 4 is filled with powder such as perlite as a filler 5, and a heat insulator pack 6 is placed in which the inside of the container 4 is depressurized.

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

The inside of the heat insulator pack 6 is under reduced pressure, and the atmospheric pressure is supported by the filling material, and its thermal conductivity is 0.00/m.
-hr″CC or less, and has twice the thermal conductivity of regular urethane inner panels and foam foam.

Therefore, the heat insulating board 1 can have high heat insulating properties.

Problems to be Solved by the Invention However, in the above-described configuration, the heat insulator plate 1 is not bonded to the heat insulator pack 6, the outer plate 2, and the inner plate 3 because the strength of the structure decreases if the adhesion between the heat insulator pack 6, the outer plate 2, and the inner plate 3 is poor. There was a problem that the above-mentioned champion had to be fixed.

In addition, when the outer panel 2 and inner panel 3 have a more complicated structure, there is a partial non-adherence between the outer panel 2 and the inner panel 6, and the outer panel 2
There were problems such as the necessity of reinforcing the inner plate 3 and the like.

In view of the above-mentioned problems, the present invention eliminates the drawbacks of the conventional example, and aims to ensure structural strength and enhance heat insulation performance.

Means for Solving the Problems In order to solve the above problems, the present invention has a structure in which open-cell foam is filled and the inside is depressurized.

Function The present invention ensures adhesion to the outer panel and inner panel with the above-described configuration, and further improves heat insulation performance by regulating the filling direction of the foam.

EXAMPLES Below, the heat insulating body of the present invention will be explained with reference to the drawings.

FIG. 1 shows a cross section of the heat insulator of the present invention. It should be noted that the same components as those in the prior art are given the same numbers and detailed explanation thereof will be omitted. - 7 is a heat insulator, and the space formed by the outer plate 2 and inner plate 3 is filled with an air permeable inner plate such as an open-cell foam and a foam body 8. In order to reduce the pressure inside the inner plate and the foam body 8, an opening 9 is provided in the outer plate 2, and the inner plate and the inner plate formed at the interface between the inner plate, the foam body 8, and the outer plate 2 are formed in this opening. A rupture valve 1o is installed on the non-breathable skin 11 of the foam body 8.

The operation of the heat insulating body configured as above will be explained.

The gas inside the inner plate of the heat insulator 7 and the foam material 8 is evacuated by a vacuum pump through a valve, and the inside is depressurized to a predetermined degree of depressurization. Next, disconnect the valve 10 from the vacuum pump. Valve 1o
is a check valve, ensuring the degree of internal pressure reduction.

In this way, the inner panel and foam body 8 are filled while being in close contact with the outer panel and inner panel, so structural strength can be ensured, and the outer panel 2
Even if the inner plate 3 has a complicated structure, it can be filled without any gaps. Moreover, the gas in the inner plate and the foam body can be easily reduced in pressure by the attached valve, the degree of pressure reduction is ensured, and the workability and quality are also good.

Effects of the Invention As described above, the present invention consists of an outer panel, an inner panel, an inner panel, and a foam body, and the inside is made to have a reduced pressure. Structural strength is ensured by the close contact between the body, outer plate, and inner plate, and the valve makes it possible to ensure the degree of depressurization and ease of work, making it excellent in terms of workability and quality.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a heat insulator according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional heat insulator. 2... Outer panel, 3... Inner panel, 7. Old...
Insulator, 8... Inner plate and foam body, 1o old
·valve. Name of agent: Patent attorney Shigetaka Awano 1 person 2-
・-Outside loss 3-Inside 5

Claims (1)

[Claims] It consists of an outer panel, an inner panel, and a foam body, and the space formed by the outer panel and the inner panel is foamed and filled with the foam, and the inside is depressurized, and a part of the outer panel or the inner panel is A heat insulating body characterized by having a valve installed therein.