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Improvement in a piston for a refrigeration compressor

A refrigeration compressor, an improved technology, applied in the direction of piston, cylindrical piston, plunger, etc., can solve the problem that different materials are not allowed to form the piston head

Inactive Publication Date: 2015-11-04
WHIRPOOL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In addition to the aforementioned disadvantages, the construction of the piston head in one piece does not allow the formation of the piston head from different materials

Method used

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  • Improvement in a piston for a refrigeration compressor
  • Improvement in a piston for a refrigeration compressor
  • Improvement in a piston for a refrigeration compressor

Examples

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Embodiment Construction

[0030] The piston for pumping refrigerant gas in a refrigerant compressor of the present invention will be described below.

[0031] Refrigeration compressors generally include a cylinder having one end (neither shown) closed by a valve plate, and the valve plate together with the cylinder defines a compression chamber. The cylinder also has opposite ends through which a piston is assembled, said piston reciprocating inside the cylinder during operation of the compressor during a suction and compression cycle of refrigerant fluid, said reciprocating motion being operatively coupled to said The operation of the piston motor unit (not shown) is achieved.

[0032] In certain compressor constructions, such as those illustrated and described below, the suction of the refrigerant fluid takes place through a piston in which the suction valve is mounted. For these configurations with suction via the piston, the head of the piston described below has at least one suction opening which...

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Abstract

The piston (P) comprises a tubular skirt (10), and a head (H) affixed in the interior of the skirt (10), close to an end edge (11) of the latter and carrying a suction valve (20). The head (H) comprises a central hub (30) having an end front face (30a) and incorporating radial wings (31) whose end edges (31a) are affixed to the skirt (10). The central hub (30) defines, with the skirt (10) and the radial wings (31), respective suction axial passages (32). The head (H) further comprises a cover (40) having a contour concentric to the inner contour of the skirt (10) and having a front face (40a) and a rear face (40b) which is affixed to the central hub (30) by the end front face (30a) of the latter, the contour of the cover (40) maintaining, with the inner contour of the skirt (10), a radial gap which defines a suction annular opening (42) to be closed by the suction valve (20).

Description

technical field [0001] The present invention relates to an improved piston for use in a compressor of a refrigeration system, and the invention has a head portion contained inside one of the ends of a cylindrical tubular skirt for use in a cylinder of a cylinder crankcase of a compressor The compression chamber in is displaced axially. Background technique [0002] In a reciprocating compressor driven by a linear motor, the action of gas extraction and compression is performed by the axial reciprocation of the piston inside the cylinder, which is closed by a head and fitted in some configurations Inside the hermetic casing of the compressor. The piston is driven by the motor unit of the compressor. [0003] Pistons for refrigeration compressors generally have a monolithic structure, ie a head and a skirt defined in a single piece, for example machined from sheet metal, usually steel. This manufacturing method is expensive and results in a large waste of material. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00F04B39/10F16J1/00
CPCF04B39/0005F04B39/0016F04B39/108F16J1/005F04B39/0022
Inventor H·B·米勒R·普夫
Owner WHIRPOOL SA