JPS58182075A - Jig for manufacturing heat insulator - 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 [Technical Field of the Invention] The present invention relates to a jig for producing a heat insulating body which presses a heat insulating body produced by so-called in-situ foaming of a foamed material during foaming.

[Technical background of the invention]

Traditionally, for example, insulation bodies such as refrigerator boxes and doors have been made by injecting foam insulation material such as polyurethane foam between the outer and inner shells of the outer and inner boxes, or the outer and inner shells, and filling them with foam. It is manufactured by in-situ foaming. In this case, the jig that holds down the entire insulator when filling the foam insulation material is manufactured by joining thick steel plates or casting aluminum, and the jig is used when filling the foam insulation material. Foaming was promoted by heating the entire structure from the outside and applying heat to the internal heat insulator.

[The first point among the background technologies] However, according to the conventional method described in Section 2, although it is intended to promote foaming of the heat insulating material, it is not possible to improve the heat chamber capacity by joining thick steel plates or casting aluminum. Since it involves heating the jig, there is a problem in that it requires an extremely large amount of energy, and in this case, it is not possible to heat the jig according to the thickness of a portion of the heat insulator, and the jig as a whole is heated. Since the only way to heat the heat insulating material is to match the thickest part of the insulator, more energy is expended on the thinner parts, resulting in a large amount of energy loss. Furthermore, for these reasons, it was not possible to cool the jig to promote solidification of the heat insulating material, and there was a problem in that it took a long time to complete the entire 1i1 construction.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned four problems in the prior art, and its purpose is to effectively and efficiently heat and cool a heat insulating body depending on its thickness, thereby reducing the amount of energy used. An object of the present invention is to provide a jig for manufacturing a heat insulating body, which can reduce the amount of time required and the amount of time required.

[Summary of the invention]

The present invention is characterized in that heating and cooling strips are provided on the inner surface of the jig so that the thicker portion of the heat insulator can be strongly heated and cooled.

[Embodiments of the invention]

An embodiment in which the present invention is applied to a jig for manufacturing a refrigerator box will be described below with reference to the drawings. First, in FIG. 1, 1 is a base, and 2 is placed on the base 1. inner jig,
Reference numeral 3 denotes an outer jig which surrounds the inner jig 2 and is also placed on the base 1. In detail, the outer 7h fitting 3 is connected to the entire wall body including the side walls 4, 5 and the earth wall 6, and each of the 141 walls is shown in Fig. 2. For example, a heat transfer sheet 7 made of a good thermal conductor such as an aluminum plate or a copper plate is laid on the inner surface (m1), and a heating/cooling strip is provided on the outer surface (the inner surface side of the outer jig 6 as a whole). A pipe 8 is attached, the outside of which is supported by a heat insulating layer 9 made of, for example, a heat insulating material, and the outside is further covered with a reinforced wall 10 made of a rigid body such as thick steel plates. In addition, in contrast to the above-mentioned outer jig 6, the inner jig 2d is made of a good thermal conductor similar to that described above and is made into a box shape in advance.
The outer surface (the inner jig 2 as a whole, in this case, the inner surface side) of the shaped heat transfer sheet 11 is heated.

A pipe 12, which is a strip for cooling, is attached, and its first side is covered with a heat insulating material A13 similar to that described above, and the outside thereof is further covered with a reinforced wall 14 formed into a box shape by casting aluminum or the like. In this embodiment, the jig as a whole is used for making the refrigerator box body 15 shown in FIG. 1 and FIG. An outer box 16 as an outer shell of the body 15 and a freezer compartment Kawauchi box 17 as an inner shell.
Also, an inner box 18 for the refrigerator compartment as an inner shell, a structure made of foamed heat insulating material to be described later, and a part 211 used to hold down the thicker freezer compartment wall 15a and a smaller refrigerator compartment wall. The part 2b used to hold down the freezer compartment wall 15b is bent, and the part 2a used to hold down the freezer wall part 15a and the part of the outer jig 3 which is also used to hold down the freezer compartment wall part 15a. 5a, the pipes 12 and 8 are attached at a higher density than the other parts 2b and 3b.

Now, in the above structure, the refrigerator box 15 is placed inside the inner jig 2 and the outer jig 3, and the outer box 16 is placed inside the inner jig 2 and the outer jig 3.
And each pipe 8 is filled with a foamed insulation material such as foamed polyurethane by injecting the foam insulation material between the inner boxes 17 and 18.
, 12, for example, the heat passes through the heat transfer sheet 7.11 and is directly applied to the refrigerator box 15. Therefore, the entire jig is heated and insulated. Unlike conventional systems that indirectly apply heat to the body, the refrigerator box 15 can be heated very effectively and efficiently. , 12, depending on the density of the refrigerator box 15.
The thickest part of the refrigerator wall 15& can be heated strongly, and the other part, the refrigerator wall 15b, is often heated excessively, thus wasting a lot of energy. Further energy savings can be achieved without having to do anything. On the other hand, if cold air is allowed to flow through each of the pipes 8 and 12 after completing the foam filling of the heat insulating material, in this case, the refrigerator m1 box 15 can be effectively and efficiently converted into the refrigerator box by applying cold heat in the same manner as described above. It can be cooled according to the thickness of each part of the heat insulating material, and as a result, it is possible to achieve a desired shortening of the time required to complete the assimilation of the heat insulating material.

Note that the heat insulator is not limited to the concrete example of the cold Ml storage box body or the cold MtY storage door, but may also be a container such as a rain door or a heat insulating pot.

In addition, the strip 7 for heating and cooling may be other than a pipe, and especially in the case of heating, an air heater may be used.
Furthermore, in this case, instead of changing the attachment density of the strips, the radiation Bj$f7j etc. may be changed to cope with the difference in the thickness of the heat insulating body.

rlb, the present invention is not limited only to the embodiments described above and shown in the drawings, but can be implemented by appropriately changing the specific structure of the jig, etc., without departing from the gist thereof. .

〔Effect of the invention〕

As is clear from the above, the present invention provides that the outer shell and the inner shell are ≠←≠
A heat insulator that presses a heat insulator manufactured by putting a foam heat insulating material into nfl and foam filling it during foam filling] In a jig for tilting, heating provided on the inner side facing the heat insulator,
The heating and cooling fields h1 of the cooling strips are varied according to changes in the thickness of the heat insulating body, so that the heat insulating body can be effectively and efficiently changed, and in particular, the thickness of the heat insulating body can be changed. It is possible to perform heating and cooling according to the difference in the temperature, and it has the remarkable effect that it is possible to achieve the desired reduction in energy consumption and shortening of the required time.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view of the whole, FIG. 2 is a sectional view of a jig unit wall, and FIG. Sectional view along line III, No. 4
The figure is a sectional view taken along the line IV-IV. In the figure, 2 is an inner jig, 5 is an outer jig, 8 and 12 are pipes (strips for heating and cooling), and 15 is a refrigerator box (insulator).
, 15B is a wall of the freezer compartment, and 15b is a wall of the refrigerator compartment. Applicant: Tokyo Shibaura Electric Co., Ltd. i.) M1 Figure 2 Figure 3 Figure 1.3a ” ''' 15i) 8/15.
816 Mochi “λ”

Claims (1)

[Claims] 1. A heat insulator with partially different thicknesses manufactured by inserting 7 tons of foam I heat insulating material between the outer shell and the inner shell and foam-filling the heat insulating material, which has partially different thicknesses, is pressed during the foam filling process, and the material facing the heat insulator is A jig for manufacturing a heat insulator, characterized in that the heating and cooling strips provided on the inner surface have different heating and cooling capacities according to changes in the thickness of the heat insulator.