JPS633160A - Refrigerator - 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] Industrial applications The present invention relates to a refrigerator for storing foods and the like.

Conventional technology In recent years, refrigerators have been installed in response to the need to reduce the installation area and to beautify the back of the refrigerator.
It is buried in insulation material.

An example of a conventional refrigerator will be described below with reference to the drawings. 3 and 4 show the structure of a conventional refrigerator. 1 is an outer box, 2 is an inner box, and 3 is a foam insulation material. Reference numeral 4 denotes a fin tube type cooler, which is disposed inside the inner box 2. Reference numeral 5 denotes a suction pipe, and reference numeral 6 denotes a capillary tube, which is embedded in the foamed heat insulating material 3 and led out into the inner box via a bushing 7 attached to the inner box 2. A pressure accumulator 8 is disposed inside the inner box and connected to the suction pipe 5 and the cooler outlet pipe 9. The capillary tube 6 is connected to a cooler inlet tube 10.

11 is a fan for blowing cold air.

Problems to be Solved by the Invention However, in the above configuration, it is necessary to embed the saccilane pipe 5 and the capillary tube 6 in the foamed heat insulating material 3, so it is difficult to connect and cool the cooler inlet pipe 1o and the capillary tube. A cooling circuit on the low pressure side was formed before the chamber outlet pipe 9 and the pressure accumulator 8 were connected, and the pressure accumulator 8 and the suction pipe 5 were connected, and before the chamber was assembled into the inner box 2. Also, inner box 2
After the fin tube cooler 4 is attached to the inner box 2 by passing the suction pipe 5 and capillary tube 6 through the bushing 7 attached to the inner box 2, the foamed heat insulating material 3 is injected and foamed. When foaming the foam insulation material 3, a foaming jig (not shown) is used to maintain the dimensions and shape against the main foaming force, and the contact area with the inner box 2 must be made as large as possible. It won't happen. However, in the case of the second method, it is necessary to provide relief in the foaming jig in the area occupied by parts such as piping, so the inner box 2 in the projected area of the pressure accumulator 7, which has a particularly large volume, is affected by the foaming pressure of the foam insulation material 3. However, the foamed heat insulating material 3 has problems such as becoming convex inward, deforming, or tearing, resulting in leakage of the foamed heat insulating material 3, resulting in a defective product that cannot be repaired.

In view of the above-mentioned problems, the present invention provides a refrigerator having a cooling piping structure that prevents deformation and tearing of the inner box and leakage of the foam insulation material.

Means for Solving the Problems In order to solve the above problems, the refrigerator of the present invention has a suction pipe, a pressure accumulator, a pressure accumulator inlet pipe, and a capillary tube embedded in a foam insulation material, and the pressure accumulator inlet pipe is also a capillary tube. The fin-tube type cooler is connected to the fin-tube type cooler inside the inner box.

Operation Since the present invention has the above-described configuration, an assembly including the suction pipe, the pressure accumulator, the pressure accumulator inlet pipe, and the capillary tube is prepared, and the pressure accumulator inlet pipe and the capillary tube are connected from the outside of the inner box through the bushing. Only the necessary parts can be extracted into the inner box.

After that, the inner box is fitted into the outer box, foamed insulation material is injected and foamed, and then a fin tube type cooler is installed inside the inner box and cooling piping is connected. Therefore, the foaming jig does not need to provide relief in the pressure accumulator and fin tube type cooler, and only needs to have relief in a very small area of the pressure accumulator inlet pipe and capillary tube. As a result, deformation and tearing of the inner box and leakage of the foam insulation material can be prevented.

EXAMPLE Hereinafter, a refrigerator according to an example of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show the structure of a refrigerator in an embodiment of the present invention. In FIGS. 1 and 2, 11 is an outer box, 12 is an inner box, and a foamed heat insulating material 13 is filled and foamed between the two to form the main body of the refrigerator. Reference numeral 14 denotes a fin tube type cooler, which is disposed inside the inner box 12. 15 is a suction pipe and pressure accumulator 16
It is connected to the foam insulation material 13 and buried in the foam insulation material 13. A pressure accumulator inlet pipe 17 is connected to the pressure accumulator 16 and is led out from the foamed heat insulating material 13 together with a capillary tube 18 into the inner box via a bushing 19 attached to the inner box 12. Furthermore, the pressure accumulator inlet pipe 17 is connected to a cooler outlet pipe 20, and the capillary tube 18 is connected to a cooler inlet pipe 21, respectively. 22
is a fan for blowing cold air.

Next, the operation of the configuration of this embodiment will be explained. Suction pipe 15, pressure accumulator 16, pressure accumulator inlet pipe 1
7 and the capillary tube 18 are attached to the outside of the inner box 12, and the pressure accumulator pipe 17 and part of the capillary tube are connected to the inner box 12 through the hole in the bushing 19.
can be derived from the outside to the inside. Thereafter, the inner box assembly can be fitted into the outer box 11, and the foamed heat insulating material 13 can be filled and foamed. After that, the fin tube type cooler 14 is attached to the inner box 12, and the cooler outlet pipe 2o and the pressure accumulator inlet pipe 17 are connected to the cooler inlet pipe 21 and the capillary tube 1.
8 and are connected to each other by brazing or other methods. In brazing, a protective material such as a ceramic heat insulating material can sometimes be used to prevent the inner box from burning out.

Effects of the Invention As described above, the present invention embeds the suction pipe, the pressure accumulator, the pressure accumulator inlet pipe, and the capillary tube in a foam insulation material, leads out the pressure accumulator inlet pipe and the capillary tube into the inner box, and then connects each of them to a fin tube. The structure connected to the mold cooler maximizes the contact area between the foaming jig and the inner box, which prevents deformation and damage to the inner box and leakage of the foam insulation material. It also has the following effects.

That is, since the fin tube cooler is attached after the foamed heat insulating material is filled and foamed, the flatness of the inner box in contact with the fin tube cooler is ensured.

In particular, it is possible to accurately determine the mounting position of the fin tube cooler in the front and rear directions, so the position of the cold air circulation air path,
It is possible to accurately maintain the area and provide a refrigerator with stable quality.

[Brief explanation of drawings]

FIG. 1 is a front view of a refrigerator showing one embodiment of the present invention, and FIG.
1, FIG. 3 is a front view of a conventional refrigerator, and FIG. 4 is a longitudinal sectional view of FIG. 3. 11...Outer box, 12...Inner box, 13
・・・・・・Foam insulation board, 14°°°° fin tube type cooler, 15・・・Suction pipe, 16・
... Pressure accumulator, 17... Pressure accumulator inlet pipe,
18... Capillary tube, 19... Bushing, 2
o... Cooler outlet pipe, 21... Cooler inlet pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] The main body is constructed by filling a foam insulation material between an outer box and an inner box, a fin tube type cooler is provided in the inner box, and a suction pipe, a pressure accumulator, and a pressure accumulator inlet pipe are connected in series in sequence. The low-pressure side piping and capillary tubes configured as above are buried in foam insulation material, and the pressure accumulator inlet pipe and capillary tubes are guided into the inner box through a bushing attached to the inner box, and the fin tube type cooler and the capillary tube are led out into the inner box. A refrigerator characterized by being connected with.