JPH04132469U - Hermetic electric compressor - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention uses a cap inserted into the connecting pipe of a compressor to pass through water vapor in the outside air and increase the moisture in the compressor. The rise can be prevented. [Structure] A heat-shrinkable tube with high gas barrier properties is covered from the entire surface of a cap 3 inserted into a connecting pipe 2 of a compressor to a part of the connecting pipe, and the cap 3 is brought into close contact with the connecting pipe 2 in an airtight manner. or,
A coating layer of fluorocarbon resin, paint, or the like having high gas barrier properties is airtightly adhered to a part of the connecting pipe from the entire surface of the cap 3.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a hermetic electric compressor.

0002

[Conventional technology]

An example of a conventional hermetic electric compressor (hereinafter referred to as a compressor) is shown below with reference to the drawing. I will explain about it. Figures 4 and 5 are shown in JP-A-61-108595. FIG. 2 is a diagram of a compressor connecting pipe cap device. 1 is the airtight container of the compressor and the cooling system. A plurality of connecting pipes 2 are fixedly connected to a system (not shown). 3 is a bullet with a cap an insertion section 3 formed of a solid material, which covers the outer periphery of the connecting tube 2 and is inserted into the inner surface thereof; S, and maintains the airtightness of the connecting pipe 2. 4 is the connection between the airtight container 1 and the connection This is the coating formed on the surface of the tube 2.

0003 In the compressor configured as above, the paint 4 is applied to the connecting pipe when painting the closed container 1. 2, and coat the outer periphery of the connecting pipe 2 to prevent it from entering the inner cylinder of the refrigerator, etc. This allows for easy and strong welding of piping with the cooling system, as well as sealing. Prevents leakage of inert gas such as nitrogen gas filled in container 1 to prevent rust. , to prevent dust from entering.

0004

[Problem that the idea aims to solve]

However, with the above configuration, water vapor in the outside air is generated during long-term transportation or humid storage. Air passes through the cap 3, raises the moisture in the sealed container 1, and enters the refrigerating machine oil of the compressor. Moisture transfers. When the compressor is installed in a system such as a refrigerator and operated, the system Accelerates freezing in the system and deterioration of refrigerating machine oil, leading to sludge formation and corrosion.Also, insulating materials This may cause the deterioration of chemical materials such as, causing fatal defects in the compressor. We had the challenge of becoming.

[0005] In view of the above-mentioned issues, this invention can prevent the rise of moisture inside a sealed container and provide high-quality The company provides compressors.

[0006]

[Means to solve the problem]

In order to solve the above problems, the compressor of the present invention is designed to make contact from all surfaces of the cap. A part of the continuation pipe is covered with a heat-shrinkable tube with high gas barrier properties, making it airtight. It is something.

[0007] In addition, the product is coated with a coating layer of fluorocarbon resin or paint that has high gas barrier properties. It is.

[0008]

[Effect]

This invention uses a heat-shrinkable tube with high gas barrier properties in the moisture permeable part due to the above-mentioned configuration. Since it is airtightly covered with a coating layer, water vapor in the outside air does not enter the airtight container. It is possible to prevent moisture from rising inside the sealed container without permeation.

[0009]

【Example】

A compressor according to an embodiment of the present invention will be described below with reference to the drawings. still, Components that are the same as those in the conventional example are designated by the same reference numerals, and explanations thereof will be omitted. Figures 1 and 2 are part of this invention. FIG. 2 is a sectional view of main parts of a compressor in an example.

0010 5 is made of polypropylene with high gas barrier properties or high density that is kept airtight on one side. It is a heat-shrinkable tube made of polyethylene resin, etc. 3A is heat-shrinked at the outer diameter of cap 3 The inner diameter of the tube 5 is larger than the outer diameter 3A of the cap 3 before heating, and the connecting tube larger than the outer cylinder diameter. When heat is applied to such a heat-shrinkable tube 5, it contracts and becomes a cap. The entire surface of the pipe 3 and a part of the outer cylinder of the connecting pipe 2 are airtightly covered and in close contact with each other.

[0011] Next, another embodiment will be described using FIG. 3. 6 is fluorocarbon resin with high gas barrier properties The entire surface of the cap 3 in the outside air and a part of the outer cylinder of the connecting pipe 2 may be coated with paint or paint. coating layer.

0012 In the above configuration, the entire surface of the cap 3 is covered with heat shrink tube 5 or fluorine. It is airtightly covered with a coating layer 6 made of resin or paint, so it is protected from outside air. It is possible to prevent water vapor from permeating into the sealed container 1 and prevent moisture from rising inside the sealed container 1. Ru.

[0013]

[Effect of the idea]

As described above, according to the compressor of the present invention, heat-shrinkable tubes with high gas barrier properties or A coating layer of fluorocarbon resin or paint is applied to the entire surface of the cap to the outer cylinder of the connecting pipe. Water vapor in the outside air does not permeate into the sealed container because it is partially covered airtight. It is possible to prevent moisture from rising inside the closed container and improve the reliability of the compressor.

[Brief explanation of drawings]

[Fig. 1] A sectional view of the main parts of a hermetic electric compressor according to an embodiment of the present invention before heating the heat-shrinkable tube.

[Figure 2] Cross-sectional view of the main part of the heat-shrinkable tube in Figure 1 after heating

[Fig. 3] A sectional view of essential parts of a hermetic electric compressor showing another embodiment of the present invention.

[Figure 4] External view of a conventional hermetic electric compressor

[Figure 5] Cross-sectional view of main parts in Figure 4

[Explanation of symbols]

1 Sealed container 2 Connecting pipe 3 Cap 3A Cap outer diameter 4 Paint film 5 Heat shrink tube 6 Coating layer

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Koichi Tsuchiya 3-22 Takaida Hondori, Higashiosaka City, Osaka Prefecture Inside Matsushita Reiki Co., Ltd. (72) Creator Seiji Nakaoka 3-22 Takaida Hondori, Higashiosaka City, Osaka Prefecture Inside Matsushita Reiki Co., Ltd. (72) Creator Yuji Mori 3-22 Takaida Hondori, Higashiosaka City, Osaka Prefecture Inside Matsushita Reiki Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A connecting tube that penetrates and is fixed to a closed container, a cap formed of an elastic body provided to close an open end of the connecting tube, and a cap that extends from the entire surface of the cap to the outside of the connecting tube. A hermetic electric compressor that consists of a heat-shrinkable tube made of polypropylene or high-density polyethylene resin with high gas barrier properties that covers part of the cylinder. 2. A connecting tube that penetrates and is fixed to a closed container, a cap formed of an elastic body provided to close an open end of the connecting tube, and an outer cylinder of the connecting tube that extends from the entire surface of the cap. A hermetic electric compressor that consists of a coating layer of fluorine resin with high gas barrier properties and paint.