JPH0542684U - Sealing structure for hermetic electric compressor connecting pipe - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention has a plug inserted in a connecting pipe of a compressor, which permeates water vapor in the outside air and raises moisture in the compressor. It is possible to prevent an increase in water content. [Structure] A cover cap 6 made of butyl rubber having a high gas barrier property is covered airtightly from a surface of a plug 5 inserted in a connecting pipe 2 of a compressor to a part of the connecting pipe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seal structure mounted on a connecting pipe of a hermetic electric compressor.

[0002]

[Prior Art]

 In recent years, high-quality hermetic electric compressors (hereinafter referred to as compressors) have been demanded, and it is necessary to further improve the quality.

An example of a conventional compressor will be described below with reference to the drawings. 2 and 3 are views of a compressor connecting pipe cap device disclosed in Japanese Patent Laid-Open No. 61-108595. Reference numeral 1 is a closed container, and 2 is a connecting pipe, and a plurality of them are fixed to the closed container 1. Reference numeral 3 is a cap made of an elastic body, and the airtightness of the connecting pipe 2 is achieved by inserting the cap into the outer cylinder and the inner cylinder of the connecting pipe 2. 4 is coating of the surfaces of the closed container 1 and the connecting pipe 2.

In the compressor configured as described above, it is possible to prevent the paint 4 from invading the inner cylinder of the connecting pipe 2 when the closed container 1 is coated, and to cover the outer cylinder of the connecting pipe 2 together with the compressor such as a refrigerator. It is necessary to make the welding of the piping to the system easy and strong, and to prevent leakage of inert gas such as nitrogen gas filled in the closed container 1 to prevent rust, etc. Prevent intrusion.

[0005]

[Problems to be solved by the device]

 However, in the above-described configuration, during long-term transportation or storage under high humidity, water vapor in the outside air permeates the cap 3 to raise the water content in the closed container 1 and transfer the water into the refrigerating machine oil of the compressor. When the compressor is installed in a system such as a refrigerator and operated, it accelerates freezing in the system and deterioration of refrigerating machine oil, causing sludge generation and corrosion, and deterioration of chemical materials such as insulating materials. It had the problem of causing fatal defects in the aircraft.

In view of the above problems, the present invention provides a high-quality compressor capable of preventing an increase in water content in a closed container.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the compressor of the present invention has a cover cap made of butyl rubber having a high gas barrier property, which is covered from the surface of the plug to a part of the connecting pipe so as to be airtightly adhered.

[0008]

[Action]

 According to the present invention, since the moisture permeable portion is airtightly covered with butyl rubber having a high gas barrier property by the above-mentioned configuration, water vapor in the outside air is not permeated into the closed container, and the rise of moisture in the closed container can be prevented. .

[0009]

【Example】

 A compressor according to an embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a sectional view of the essential parts of a compressor according to an embodiment of the present invention. An elastic plug 5 is press-fitted into the connecting pipe 2. Reference numeral 6 is a cover cap made of an elastic body, which is made of butyl rubber having a high gas barrier property. The surface of the plug 5 and a part of the outer cylinder of the connecting pipe 2 are covered.

In the structure described above, the entire surface of the plug 5 is hermetically covered with a butyl rubber cover cap having a high gas barrier property, so that the water vapor in the outside air does not permeate into the hermetically sealed container 1 and is hermetically sealed. It is possible to prevent an increase in water content in the container 1.

[0011]

[Effect of the device]

 As described above, according to the compressor of the present invention, the butyl rubber cover cap having a high gas barrier property covers the entire surface of the plug in the outside air to a part of the outer tube of the connecting pipe in an airtight manner. The water vapor of the above does not permeate into the closed container and prevents the rise of water in the closed container, so that the reliability of the compressor can be improved. Further, the plug and the cover cap are integrally molded, so that they can be easily detached when they are attached to the connection pipe and when they are connected to the refrigeration system, and the workability can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a compressor according to an embodiment of the present invention.

FIG. 2 is an external view of a conventional compressor

3 is a cross-sectional view of the main part of FIG.

[Explanation of symbols]

 1 Airtight container 2 Connection pipe 3 Cap 4 Coating film 5 Plug 6 Cover cap

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Mori 3-22 Takaidahondori, Higashi-Osaka City, Osaka Prefecture Matsushita Refrigerator Co., Ltd. (72) Toru Noro 3-22 Takaidahondori, East Osaka, Osaka Matsushita Refrigerator Co., Ltd. (72) Creator Seiji Nakaoka 3-22 Takaidahondori, Higashiosaka, Osaka Prefecture Matsushita Refrigerator Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A connecting pipe penetratingly fixed to a closed container containing a main body of a hermetic electric compressor, a plug formed of an elastic body press-fitted to an inner diameter side of an opening end of the connecting pipe, and the plug. A sealing structure for a hermetic electric compressor connecting pipe, comprising a cover cap of butyl rubber having a high gas barrier property, which is formed of an elastic body that covers a part of an outer cylinder of the connecting pipe from a surface thereof. 2. The seal structure for a hermetic electric compressor connecting pipe according to claim 1, wherein the plug and the cover cap are integrally molded.