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Vortex compressor

A technology for scroll compressors and compression chambers, which is applied to rotary piston machines, rotary piston pumps, supporting machines, etc., and can solve problems such as heavy loads and increased sliding friction losses

Inactive Publication Date: 2004-08-04
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the load acting on the main bearing 31 is still large, and as a result, there is a problem that the sliding friction loss increases.

Method used

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Examples

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Embodiment Construction

[0028] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a schematic cross-sectional view of a scroll compressor according to an embodiment of the present invention. Fig. 2 is an enlarged view of a main part of a rotary drive shaft. Also, for the above Figure 4 The same reference numerals are used for components that are the same or considered to be the same as the conventional examples.

[0029] Such a scroll compressor 10 includes a cylindrical hermetic casing 2 . The closed case 2 is disposed vertically, and its interior is divided into a compression chamber CC on the upper side and a motor chamber MC on the lower side by the main frame 3 . The refrigerant compression unit 4 composed of a fixed scroll 41 and an orbiting scroll 42 is accommodated in the compression chamber CC. The motor (electric motor) 5 which drives the refrigerant compression part 4, and the rotary drive shaft 6 which is the output shaf...

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Abstract

A scroll compressor is provided to lower sliding friction loss of a main shaft without damaging the reliability of a crank shaft, and improve the compression efficiency. A rotary driving shaft(6) includes a main shaft(61) coaxially arranged in a motor chamber(MC), and a crank shaft(62) formed on one end of the main shaft for rotating a rotary scroll(42) in a compression chamber(CC). The crank shaft is arranged to satisfy e is bigger than (Dm-Dc) / 2, wherein Dm indicates a diameter of the main shaft, and Dc indicates a diameter of the crank shaft. A joint shaft connects the main shaft with the crank shaft in length corresponding to a process relief when the main shaft and the crank shaft are processed in accuracy required for a sliding bearing function of the main shaft to a main bearing of a main frame, and for a sliding bearing function of the crank shaft to a crank bearing of the rotary scroll. The joint shaft is formed in a shape which is settled in the diameter of the main shaft and the diameter of the crank shaft in an axial view.

Description

technical field [0001] The present invention relates to a scroll compressor for use, for example, in compressing refrigerant of an air conditioner, and more particularly, to an improvement in a rotating drive shaft enabling higher compression efficiency and lower cost. Background technique [0002] First, refer to Figure 4 A general structure of a hermetic vertical scroll compressor 1A in which a refrigerant compressing unit is disposed above a motor will be described. Such a scroll compressor 1A divides the inside of the hermetic casing 2 into a compression chamber CC having a refrigerant compressing unit 4 and a motor chamber MC having a motor 5 through a main frame 3 . [0003] The rotational driving force generated by the electric motor 5 is transmitted to the refrigerant compressing part 4 via the rotational driving shaft 6, and the rotating scroll 42 mounted on the front end of the rotating driving shaft 6 is rotated relative to the fixed scroll 41 to compress the ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/02F04C29/00
CPCF04C29/0057A01K97/10A01K89/01127Y10S269/907Y10S81/01
Inventor 两角尚哉
Owner FUJITSU GENERAL LTD
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