Compression pump body of rotary compressor

A technology of rotary compressors and compression pumps, which is applied in the direction of rotary piston pumps, rotary piston machines, rotary piston/swing piston pump components, etc., can solve the problem of reducing the improvement effect of flat structure and increasing friction loss Larger, larger contact area, etc., to improve the lubrication effect, reduce friction loss, and reduce the contact area

Active Publication Date: 2014-04-23
GUANGDONG MEIZHI PRECISION MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The piston becomes larger, the weight becomes larger, the contact area with the lower bearing also increases, and the friction loss increases accordingly, thereby reducing the improvement effect of the flattened structure

Method used

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  • Compression pump body of rotary compressor
  • Compression pump body of rotary compressor
  • Compression pump body of rotary compressor

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0023] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the descrip...

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PUM

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Abstract

The invention discloses a compression pump body of a rotary compressor. The compression pump body comprises a cylinder assembly, an upper bearing, a lower bearing and a bent axle, wherein the cylinder assembly comprises at least one cylinder. The upper bearing and the lower bearing are arranged above and below the cylinder assembly, respectively; the end face, facing the cylinder assembly, of the lower bearing is provided with a groove. The bent axle penetrates through the upper bearing, the cylinder assembly and the lower bearing, wherein the inner diameter of the cylinder closely bonded to the lower bearing is Dcy, the semi-diameter of the eccentric shaft shoulder of the bent axle is Rcr, the eccentricity of the bent axle is (e), the groove is arranged in a annular area which is arranged on the end face, facing the cylinder assembly, of the lower bearing; the central axis of the annular area and the central axis of the bent axle are coincident; the outer-diameter Dw of the annular area and the inner diameter Dn satisfy the following relation: (Dcy-4e) is more than Dw, and Dn is more than 2Rcr. Due to the adoption of the compression pump body of the rotary compressor provided by the embodiment of the invention, the contact area between a piston and the lower bearing is reduced, and consequently, the frictional loss is reduced.

Description

technical field [0001] The invention relates to the refrigeration field, in particular to a compression pump body of a rotary compressor. Background technique [0002] In order to improve the efficiency of the compressor, the compressor in the related art has a flat structure to optimize the friction loss between various moving parts. When the displacement volume is constant (V=πe(D-e)H), the cylinder height H and the outer diameter of the eccentric part of the crankshaft remain unchanged, the larger the cylinder diameter D, the smaller the eccentricity e of the crankshaft, and the larger the piston at this time . The piston becomes larger, the weight becomes larger, the contact area with the lower bearing also increases, and the friction loss increases accordingly, thereby reducing the improvement effect of the flattened structure. Contents of the invention [0003] The present invention aims to solve one of the above-mentioned technical problems in the prior art at lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/00F04C29/02F04C18/344
Inventor 彭道银吴敬钦付清轩
Owner GUANGDONG MEIZHI PRECISION MFG
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