JPH02133775A - Heat insulated box - Google Patents

Abstract

PURPOSE:To prevent a deformation and a damage as well as a leakage of a heat radiating pipe by a method wherein when an outer box frame is formed, zig-zag parts for accommodating a movement of a heat radiating pipe generated due to a difference of bending curvatures of a flat raw element and the heat radiating pipe are arranged at both side walls of the outer box. CONSTITUTION:A steel plate raw member 1a is formed into a flat plate of a predetermined shape and a heat radiating pipe 21 bent into a predetermined shape is mounted and installed on the raw element 1a. The heat radiating pipe 21 has, at any position of a wall corresponding to a bent side when the outer box frame of the flat plate raw element 1a, any zig-zag part 2a for accommodating a movement of the heat radiating pipe 21 generated due to a difference of bending curvatures of the raw element 1a of U-shaped or L-shaped and the heat radiating pipe 21. An inner die 6 is set in the raw element 1a formed as described above. The inner die 6 has a bending die, a raw element bending die 6a and a heat radiating pipe bending die 6b having different bending curvatures. When the outer box frame 1A is formed, the raw element 1a and the heat radiating pipe 21 are bent simultaneously in a cubic form along a predetermined bending die of the inner die 6. The cubic bending of this heat radiating pipe 21 is bent along the bending die 6b, resulting in that the heat radiating pipe 21 may not be collapsed and not be spaced apart from the outer box frame 1A.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the structure of a heat insulating box used in refrigerators, etc.
7. Particularly, it relates to a configuration in which a tube body through which a refrigerant flows is bent and formed into the same shape 84 at the time of molding the outer case and attached to the outer case.

2. Description of the Related Art Conventionally, this type of insulating box has been constructed as shown in FIGS.

In the figure, 1 is an outer box, and 2 is a heat dissipation tube of a refrigerant cycle. Conventionally, it has been common to attach the heat dissipation tube 2 at a proper position inside the outer box 1. In such a configuration, the heat dissipation tube 2 is bent into a predetermined shape as shown in FIG. It was touching the position.

Problems to be Solved by the Invention However, with the above configuration, large molding equipment is required to bend the heat dissipation tube 2 three-dimensionally in advance, and a large storage space is also required to store it before it is assembled into the outer box 1. Was. Furthermore, the work of assembling it into the outer box 1 was complicated and difficult because the heat dissipation tube 2 was three-dimensional.

In view of the above-mentioned problems, the present invention has been developed by installing a heat dissipation tube as a condenser in advance on a flat material before forming an outer box frame, and then bending this material and forming a predetermined outer box flenometer at step 5. An object of the present invention is to provide a heat insulating box body in which the heat dissipation tubes are not deformed, damaged, crushed or swallowed even when the heat dissipation tubes are formed. In a heat-insulating box body constructed by foam-filled heat-insulating adhesive between both boxes, both side walls of the outer box and connecting walls such as castle walls or ceiling walls are pre-painted or a metal plate is formed into a roughly crest shape. 2 digits spaced apart from each other in the center.
It is formed by bending the metal plate in an L-shape, and a heat dissipation tube is arranged perpendicular to the imaginary bending line of the metal plate before bending, and the outer box is shaped like 1&lL"j, The meandering portion that absorbs the movement of the heat sink caused by the difference in the bending curvature between the heat sink and the heat sink is attached to both sides of the outer box.
It has a configuration in which it is provided in

The 1111 failure and failure is due to the above mentioned 7 features, even if the heat dissipation tube is installed in advance on the deck-shaped element and then bent, the interlocking of the heat dissipation tube due to the difference in bending curvature can be absorbed, and the outer box Film/film molding can also be easily performed.

Embodiment Hereinafter, an embodiment of the present invention will be explained based on FIGS. 1 to 4, but the detailed explanation of the same structure as the conventional one will be omitted, taking advantage of the same number -υ. In the figure, 11 is an outer box, 21 is a heat dissipation tube, 3 is an inner box, and 4 is a foam-filled aging box. A heat dissipation pipe 2, which becomes all or a part of the condenser of the refrigerant cycle, is arranged at a predetermined position on the flat steel plate blank of this outer box frame, and any heat transfer tape for heat dissipation is installed. 5, etc. The heat radiation pipe 2 is arranged so as to be perpendicular to the bending ridge line forming the outer box 1.The actual work of such a structure is to 1a is formed into a plate-like shape having a predetermined shape, and then a heat radiation t' 121 bent into an auxiliary shape is flexibly mounted on the material 1a.The heat radiation pipe 21 is attached to the outer box frame of the deck-like element 1t1a. The movement of the heat dissipation tube 21 caused by the difference in the bending curvature of the element 11:41a and the heat dissipation tube 21, such as a 0-shape or an L-shape, is sometimes placed at an arbitrary position on the wall on the open side. It has an arbitrary meandering part 2a for absorption.

As shown in FIG. 4, an inner mold 6 is inserted into the element (1a) formed as described above. Hold, outer box 1/
- When forming the mold 1A, the material 1a and the heat dissipation tube 21 are simultaneously bent three-dimensionally along a predetermined bending pattern of the inner mold 6. Since this three-dimensional bending of the heat dissipation tube 21 is performed along the bending pattern 6b, the heat dissipation tube 21 may be extremely dipped or the outer box frame
The heat dissipation tubes are spaced apart from each other by a distance greater than A, and the heat dissipation tubes are located on both side walls 12 of the outer box 1. It can be selectively formed on the top or bottom wall 13 as needed.

Effects of the Invention The present invention has the following configuration and provides 11
1-curve molding [■, 5 to I [to absorb the movement of the heat dissipation tube, V,) size '11, size l ~ or 11 bow, 1/2,
Yo-, stop the heat sink-s'! Physically accomplished 1l'
It is possible to mount a flat plate-shaped material on a substantially flat material, which allows for the miniaturization of the mold for the heat dissipation tube, reduces the storage space, and improves the efficiency of assembly work. 1. Restrictions on the type of material can be greatly relaxed, such as being able to use pre-painted outer box material or painted steel plate.

[Brief explanation of drawings]

1 to 4 show the heat insulating box of the present invention, FIG. 1 is a perspective view of the outer box frame, FIG. 2 is a developed view of the outer box frame, and FIG. 3 is a cross-sectional view of the main part of the heat insulating box. Figures 1 and 4 are sectional views of main parts during molding of the outer box frame, Figures 6 and 6 show a conventional example, Figure 5 is a perspective view of the outer box frame, and Figure 6 is a heat dissipation diagram of the same. It is a perspective view of pipe installation work. 11... Outer box, 21... Heat sink, 1A
... Outer box frame, 3... Inner box, 4... Heat insulation layer, 2a... Snake saving section. Name of agent: Patent attorney Shigetaka Arino and one other person
Kenri Kousuikai

Claims (1)

[Claims] It consists of an inner box, an outer box, and a heat insulating material filled with foam between the two boxes, and both sides and the bottom wall or top wall of the outer box are made of pre-painted metal plates in a substantially U-shape. In addition to forming the outer box frame with a bent outer box frame, heat dissipation pipes for flowing refrigerant are placed in advance in appropriate places on the flat material before the outer box frame is formed, and the heat dissipation pipes are placed along the imaginary bending line of the material. Meandering portions are provided on both sides of the outer box so as to be arranged at right angles, and absorb the movement of the heat dissipation tube caused by the difference in bending curvature between the flat material and the heat dissipation tube when forming the outer box frame. An insulated box body characterized by: