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Hermetic reciprocating compressor with thrust ball bearing

A closed compressor, thrust ball bearing technology, applied in the direction of ball bearings, bearings, bearing components, etc., can solve problems such as damage to the cage 31 and decrease in reliability.

Inactive Publication Date: 2009-09-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, in the conventional structure, in the case of using lubricating oil 6 of a low viscosity grade such as ISO VG3 to ISO VG10, there is a problem that the cage 31 may be damaged and the reliability may be lowered

Method used

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  • Hermetic reciprocating compressor with thrust ball bearing
  • Hermetic reciprocating compressor with thrust ball bearing
  • Hermetic reciprocating compressor with thrust ball bearing

Examples

Experimental program
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Effect test

Embodiment Construction

[0055] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the present invention is not limited to this embodiment.

[0056] (Example)

[0057] figure 1 It is a longitudinal sectional view of the hermetic compressor of the embodiment of the present invention.

[0058] The hermetic compressor 100 stores lubricating oil 102 in a hermetic container 101 and accommodates an electric driver 105 provided with a stator 103 and a rotor 104 , and a compressor 106 driven by the electric driver 105 and provided above the electric driver 105 .

[0059] The shaft 110 constituting the compression member 106 has a main shaft portion 111 into which the rotor 104 is fixedly shrink-fitted, and an eccentric shaft portion 113 formed eccentrically from the main shaft portion 111 by a flange portion 112 . In addition, an oil supply mechanism 114 is formed in the shaft 110 .

[0060] The cylinder block 120 has a substantially cylindric...

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Abstract

A hermetic compressor includes a hermetic container that stores lubricating oil, an electrically-driven element having a stator and a rotor, a shaft having a compressing element driven by the electrically-driven element, and including an eccentric shaft portion, a cylinder block, a piston, a coupling device that connects the piston and the eccentric shaft portion, a main bearing, and a thrust ball bearing that supports a vertical load by the self weight of the rotor and the shaft. The thrust ball bearing includes a plurality of balls having a diameter of 3 mm or less, a holder portion holding the balls and formed of a polymeric material, and an upper washer and a lower washer disposed above and below the balls, respectively, and the viscosity grade of the lubricating oil is from ISO VG3 to ISO VG10.

Description

technical field [0001] The present invention relates to a hermetic compressor used in a refrigerating cycle of a refrigerating refrigerator or the like. Background technique [0002] In recent years, in the case of hermetic compressors used in refrigerating devices such as refrigerating refrigerators, it has been proposed to achieve high efficiency for reducing power consumption. Conventionally, as a means for obtaining high efficiency of a hermetic compressor, a thrust ball bearing in which sliding loss of a thrust bearing portion is reduced compared with a sliding bearing has been employed. At the same time, reduction of the viscosity of lubricating oil is improved, so that sliding loss is reduced. [0003] As for this type of conventional hermetic compressor, there is a compressor in which the upper and lower parts of the ball are clamped by gaskets, and a thrust ball using a cheap and simple structure using a cage made of a polymer material bearings to obtain high effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00F04B39/02F16C33/38F16C33/66
CPCF04B39/12F16C19/10F04B39/023F16C33/44F04B39/0094F04B39/122F04B39/0005F05B2240/50Y10S384/00Y10S417/902
Inventor 坪井康祐
Owner PANASONIC CORP
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