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Hermetic compressor

A technology of hermetic compressors and compression units, which is applied in the direction of liquid variable displacement machinery, mechanical equipment, engine components, etc. It can solve the problems of damaging the surface of sliding parts, reducing the reliability of compressors, wear or adhesion, etc., to improve wear Effects of reliability, reduction of solid contact, and improvement of efficiency

Inactive Publication Date: 2009-07-22
ジーエムシーシーアンドウェリングアプライアンスコンポーネントタイランドカンパニーリミテッド
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that if the remaining splash particles are mixed into the circulating oil and enter the sliding part, the surface of the sliding part is damaged, and seizure occurs and causes wear or seizure
[0008] In addition, if the grinding powder generated on each sliding surface is also mixed into the lubricating oil, and especially enters into the narrow sliding part such as the ball joint, it will cause wear or adhesion similar to the particles, and the reliability of the compressor will be significantly reduced. Spend

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0104] First, a sintered material of Fe-Cu(1-2%)-C(0.7-1.0%) subjected to sealing treatment by steam treatment was used as the material of the piston 4, and it was used as the connecting rod 2. Compressors using iron-based alloys as materials.

[0105] The iron-based alloy is a smelting material, in which Cr(11-13 wt%)-Mo(0.8-1.2 wt%)-Mn(0.3-0.6 wt%)-C(0.6-1.6 wt%) and other components including The iron alloy of the remaining element iron was quenched at 1010°C to 1040°C, tempered twice at 520°C for 2 hours, and nitriding was performed in a salt bath at 480°C for 90 minutes.

[0106] In the refrigeration cycle equipped with this hermetic compressor, isobutane was sealed as a refrigerant and ester oil was sealed as a lubricating oil, and the operation speed was 4900 revolutions per minute and the discharge pressure was 1.6Mpa. After 30 days, as a result, no wear occurred on the ball joint structure, and the result was obtained that good lubricity could be maintained.

[0107...

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PUM

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Abstract

A hermetic compressor is provided to have high reliability and reduce wear of a ball joint part by using a material having a high wear resistant property. A hermetic compressor includes a hermetic container, a compressing element, a crank unit, and a ball(2a). The compressing element is received in the hermetic container. The compressing element has a cylinder and a piston(4). The piston reciprocates inside of the cylinder. The crank unit has a connecting rod(2) connected to the piston. The ball is installed on the connecting rod and is ball-jointed on the piston by rotating a ball receiving hole formed on the piston. A lubricant is provided to the sliding moving part of the ball joint.

Description

technical field [0001] The present invention relates to a hermetic compressor used in refrigerators, air conditioners, etc., and more particularly to a hermetic compressor with a reciprocating piston. Background technique [0002] Conventionally, as a ball joint structure on a piston and a connecting rod of a compressor, it is known that a spherical receiving hole (ball receiving hole) and a ball are implemented on both sides or one of them as in JP-A-2003-214343 (Patent Document 1). Nitriding treatment and manganese phosphate treatment, and the structure using high-carbon chromium steel on the spherical surface. [0003] However, the configuration of Patent Document 1 (Patent Document 1: JP-A-2003-214343) has the following problems. [0004] In the structure of Patent Document 1, the high-carbon chromium steel material used on the spherical surface has high hardness and is difficult to process. Also, the passage of lubricating oil supplied to spherical bearings (balls and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B39/00
CPCF04B35/04F04B39/0005F04B39/0022F04B39/0094F04B39/023F05B2210/14F05B2230/22F05B2230/90F05B2250/33F05B2280/1071F05B2280/5007
Inventor 中岛昌一高安博佐藤真一绀野元别役健二野崎务
Owner ジーエムシーシーアンドウェリングアプライアンスコンポーネントタイランドカンパニーリミテッド