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Scroll compressor

A technology of scroll compressors and moving scrolls, which is applied in the direction of rotary piston machines, rotary piston pumps, mechanical equipment, etc., and can solve problems such as reducing the performance of compressors

Inactive Publication Date: 2014-05-21
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reduces compressor performance

Method used

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Experimental program
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Effect test

no. 1 approach

[0015] refer to Figure 1 to Figure 4 , a first embodiment of a scroll compressor (hereinafter referred to as a compressor) will now be described. The compressor is installed in the vehicle and used with the vehicle air conditioning unit.

[0016] Such as figure 1 As shown, the compressor 10 includes a housing 11 made of metal, in this embodiment aluminum. The housing 11 includes a cylindrical motor housing member 12 and a cylindrical discharge member 13 . The motor housing member 12 includes a closed end and an open end 121h (when in figure 1 left end when viewed in middle). A discharge housing member 13 having a closed end is connected to the open end 121 h of the motor housing member 12 . The motor housing member 12 accommodates a compression unit P that compresses refrigerant and an electric motor M that drives the compression unit P. As shown in FIG.

[0017] The motor housing member 12 includes an end wall 12a and a cylindrical shaft support portion 121a protruding...

no. 2 approach

[0058] refer to Figure 5 to Figure 6 , the second embodiment will now be described. Parts that are the same as those of the first embodiment are given the same reference numerals. These components will not be described in detail.

[0059] Such as Figure 5 As shown, the end face of the movable member 28 facing away from the orbiting scroll 23 includes a tapered protrusion 81 . The tapered protrusion 81 includes a tapered protrusion surface 81 a that surrounds the bush 20 b and has a diameter that decreases as the orbiting scroll 23 becomes farther away. Furthermore, an annular seal 28 s is provided in the outer circumferential surface of the movable member 28 . The seal 28 s has an outer surface located radially outward of the outer circumferential surface of the movable member 28 . Therefore, a clearance C2 is formed in the radial direction between the movable member 28 and the shaft support 21 . The seal 28s is elastically deformable to allow the movable member 28 to ...

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PUM

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Abstract

A scroll compressor includes a rotation shaft, a fixed scroll, a movable scroll, a compression chamber, a shaft support, a housing, a movable member arranged in the shaft support, and a rotation restriction mechanism configured to restrict rotation of the movable scroll. The rotation restriction mechanism includes pins, recesses into which the respective pins are loosely fitted, and the movable member. The movable member includes the pins or the recesses. A switching mechanism is configured to switch the movable member between a state in which movement of the movable member in a radial direction of the rotation shaft is restricted and a state in which the restriction is canceled and the movable member can move freely, which changes a movable range of the movable member in the radial direction so that an orbital radius of the movable scroll is changed.

Description

technical field [0001] The present invention relates to a scroll compressor. Background technique [0002] Generally, a scroll compressor includes a fixed scroll and a movable scroll, the fixed scroll is fixed to a casing, and the movable scroll orbits relative to the fixed scroll. The fixed scroll includes a fixed base plate and a fixed scroll wall protruding from the fixed base plate. The movable scroll includes a movable base plate and a movable scroll wall protruding from the movable base plate. The fixed scroll wall and the movable scroll wall engage with each other to define a compression chamber. The orbiting motion of the movable scroll reduces the volume of the compression chamber and compresses the refrigerant. An example of such a scroll compressor is described in Japanese Patent Publication No. 2010-14108. [0003] In a scroll compressor, a large centrifugal force acts on the movable scroll, especially when the rotating shaft rotates at high speed. This incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/02
CPCF01C17/06F04C27/001F04C28/08F04C18/0215F04C2270/13F04C18/0261F04C14/00F04C18/02F04C28/22
Inventor 户泽耕作水藤健村上和朗
Owner TOYOTA IND CORP