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rotary compressor

A technology of rotary compressor and compression mechanism, applied in rotary piston machinery, rotary piston pump, mechanical equipment, etc., can solve problems such as increased sliding loss, reduced capacity, abnormal wear, etc., and achieve the effect of suppressing surface pressure

Active Publication Date: 2021-08-06
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the formation of a large number of oil grooves, the sealing performance is lowered, and the sliding loss increases, so there is a problem that the capacity is lowered or the input is increased.
In addition, there is a possibility of local abnormal wear due to the catch caused by the edge of the oil groove.
In addition, there is a problem that the surface pressure received by the vane groove increases due to the formation of the oil groove.

Method used

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Embodiment Construction

[0028] In the first form of the present invention, an oil groove communicating with the vane spring hole is provided on the low-pressure chamber side groove surface of the vane groove, and the eccentricity between the axis center of the shaft and the piston center of the piston is Es, from the cylinder center of the cylinder When the distance to the inner end of the vane groove is R, the distance from the inner end to the outer end of the vane groove is W, and the distance from the center of the cylinder to the oil groove is L, the oil groove is arranged so that R+W-2Es≤L≤R+2Es The position of the condition. According to the first aspect, sufficient lubricating oil can be supplied to the vane and the surface of the vane groove on the low-pressure chamber side, and the surface pressure of the vane and the vane groove can be suppressed.

[0029] In a second aspect of the present invention, in the first aspect, the oil groove is a single vertical groove formed in a direction perp...

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Abstract

The invention provides a rotary compressor. An oil groove (6) communicated with a blade spring hole (3) is arranged on the side groove surface of the blade groove (1) on the side of the low-pressure chamber, and the shaft center of the shaft (40) is connected to the piston ( 32A, 32B) The eccentricity of the piston center is Es, the distance from the cylinder center (O) of the cylinder (31) to the inner end (1b) of the vane groove (1) is R, and the distance from the inner end (1b) of the vane groove (1) When the distance from (1b) to the outer end (1a) is W and the distance from the cylinder center (O) to the oil groove (6) is L, arrange the oil groove at a position satisfying the condition of R+W‑2Es≤L≤R+2Es (6) The surface pressure of the vane (33) and the vane groove (1) can be suppressed, and sufficient lubricating oil can be supplied to the surface of the vane (33) and the vane groove (1) on the low-pressure chamber side.

Description

technical field [0001] The present invention relates to a rotary compressor used in an outdoor unit of an air conditioner and a refrigerator. Background technique [0002] In general, a rotary compressor used in an outdoor unit of an air conditioner or a refrigerator has a motor unit and a compression mechanism unit installed in an airtight container, and the motor unit and the compression mechanism unit are connected by a shaft. The piston attached to the eccentric part of the shaft performs revolution motion. The compression mechanism unit includes a cylinder, a piston arranged in the cylinder, and a vane that partitions the inside of the cylinder. The cylinder is formed with a vane groove for arranging the vane, a vane groove oil hole connected to the outer end of the vane groove, and a vane spring hole centered on the sliding direction of the vane. The inner end of the vane groove protrudes. [0003] The surface on the rear end side of the vane is lubricated by lubric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356
CPCF04C18/356
Inventor 古谷志保堀畑秀幸椎崎启
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD