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Piston of variable displacement compressor for automobile air conditioning system

A technology for automotive air conditioning systems and compressors, which is applied to liquid variable-capacity machinery, mechanical equipment, and variable-capacity pump components. It can solve problems such as reducing compressor compression efficiency, and achieve the effects of reducing sliding resistance and suppressing power loss.

Inactive Publication Date: 2004-06-30
SANDEN HUAYU AUTOMOTIVE AIR CONDITIONING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the gap between the outer peripheral surface of the piston and the inner peripheral surface of the cylinder bore becomes larger, the compression efficiency of the compressor will be reduced

Method used

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  • Piston of variable displacement compressor for automobile air conditioning system
  • Piston of variable displacement compressor for automobile air conditioning system
  • Piston of variable displacement compressor for automobile air conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] like image 3 As shown, the present invention, that is, the piston of the variable displacement compressor in the automobile air conditioning system, the piston 7 rotates with the drive shaft 2, and passes through the swash plate 6 installed on the drive shaft 2 in the crankshaft cavity 15. Reciprocating movement from top dead center to bottom dead center.

[0017] like figure 1 , figure 2 As shown, a plurality of oil pockets 71 are uniformly provided on the outer peripheral surface of the piston 7 in sliding contact with the inner peripheral surface of the cylinder bore.

[0018] The shape of the oil pit can be spherical, or cylindrical, or triangular, or quadrilateral, or polygonal, or elliptical, or star-shaped.

[0019] The lubricating oil accumulated on the outer peripheral surface of the piston 7 and the inner peripheral surface of the cylinder hole can prevent the compressed refrigerant gas in the cylinder hole from leaking into the crankshaft cavity 15 throu...

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PUM

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Abstract

The invention is a piston for compressor with variable displacement in car air conditioning system, the piston rotates with the driving axis, and it moves reciprocally between the upper and subjacent dead centers through the tilted plate of driving shaft in the crank cavity, the character lies in: the piston has several oil pits on the outer surface contacting with the inner surface of cylinder hole.

Description

technical field [0001] The invention relates to a refrigerant compressor, in particular to a piston of a refrigeration compressor with a variable displacement mechanism in a swash plate type vehicle air conditioning system. Background technique [0002] see image 3 , the variable displacement compressor includes a cylinder block 9, a front cover 3 at one end of the cylinder block 9, a crankshaft cavity 15 between the cylinder block 9 and the front cover 3, and a valve plate assembly 10 at the other end of the cylinder block 9, The control valve 13 and the cylinder head 12 are integrally connected by screws 16, respectively. [0003] Bearings in the front cover 3 and the cylinder block 9 support the drive shaft 2, the drive plate 4 is fixed on the drive shaft 2, the swash plate 6 is supported on the drive shaft 2 located in the crankshaft cavity 15, and the swash plate 6 is along the drive shaft 2 The axis of 2 slides and is relatively inclined. The swash plate 6 is mounte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B27/08F04B53/14
Inventor 杨念萱周继峥沈兴家
Owner SANDEN HUAYU AUTOMOTIVE AIR CONDITIONING CO LTD