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Cyclone compressor

A scroll compressor and scroll technology, which is applied in the field of scroll compressors, can solve the problems of compressor performance degradation and inability to fully suppress pressure fluctuations in the compression chamber, and achieve high total adiabatic efficiency

Inactive Publication Date: 2010-12-01
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For the above reasons, in the conventional scroll compressor in which the back pressure communication passage is connected to the compression chamber, the pressure fluctuation of the compression chamber facing the opening cannot be sufficiently suppressed, and there is a possibility that compression may be caused by the accompanying back pressure fluctuation. The problem of machine performance degradation

Method used

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no. 1 approach

[0074] according to Figure 1-7 , Figure 23 and Figure 24 A first embodiment in which the present invention is applied to an orbiting urging scroll compressor in which the non-orbiting scroll member is fixed to the housing is described. The scroll member is provided with a back pressure chamber on the back side of the orbiting end plate (anti-compression chamber side) of the end plate of the orbiting scroll member. The rotating member exerts force. Here, the scroll member that has been called "non-orbiting" is called "fixed" for explanation (for example, the non-orbiting end plate is called a fixed end plate, and the non-orbiting scroll is called a fixed scroll. Wait).

[0075] figure 1 It is a longitudinal sectional view of a scroll compressor. Figure 2(A) is an enlarged view of the compression mechanism ( figure 1 N part of the valve), Fig. 2(B) is an enlarged view of the differential pressure control valve in the case of the valve type (U part of Fig. 2(A)), image ...

no. 2 approach

[0104] Next, use an enlarged view of the vicinity of the opening on the compression chamber side ( Figure 4 Part P2) of Figure 8A scroll compressor according to a second embodiment of the present invention will be described. In the second embodiment, parts different from those in the first embodiment will be described, and the same parts will be omitted. In the second embodiment, the compression-chamber-side opening 60b is provided at a position about 240 degrees inward from the inner-line-side winding end point of the fixed scroll 2b. Compared with the above-mentioned first embodiment, the angle away from the inner thread side winding end point is smaller, so the compression chamber side opening 60b starts communicating with the suction chamber 105 before the start of compression. However, in this case, there is no essential difference except that the center of the back pressure fluctuation is close to the suction pressure, and the same effect as that of the first embodim...

no. 3 approach

[0106] Next, use an enlarged view of the vicinity of the opening on the compression chamber side ( Figure 4 Part P1) of Figure 9 A scroll compressor according to a third embodiment of the present invention will be described. In the third embodiment, parts different from those in the first embodiment will be described, and the same parts will be omitted. This third embodiment is an embodiment in which the compression chamber side opening 60b is set on the radially outer side with respect to the center of the fixed dedendum. However, a part of the compression chamber side opening is formed at a position away from the side surface of the fixed scroll 2b by more than the addendum width of the orbiting scroll 3b, and a section communicating with the fixed outer line side compression chamber 100b is ensured. The communication angle section with the fixed inner line side compression chamber 100a is larger than the communication angle section with the fixed outer line side compres...

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Abstract

To stabilize the pressure of a back pressure chamber arranged on the back face of a cyclone component to reduce variation of a force for pushing one cyclone component against the other cyclone component so as to implement high efficiency of a cyclone compressor. On the root of teeth of one cyclone component, a compression chamber side communication port of a back pressure communication channel is arranged at a position facing to the compression chamber of two systems, and the internal line of the cyclone component equipped with the compression chamber side communication port is of a tooth shape that the compression of the compression chamber is performed in advance. Thereby, the variation amplitude of the pressure in the compression chamber communicated with the compression chamber side communication port is reduced, and the variation amplitude of corresponding back pressure is reduced. By means of restraining the variation of the back pressure, the deformation variation of the cyclone component is restrained; leakage loss is reduced by improving sealability of the clearance between two cyclone components, such that a total adiabatic efficiency is improved by restraining interference and reducing friction loss.

Description

technical field [0001] The present invention relates to a scroll compressor for compressing a working fluid by a fixed or non-orbiting scroll member and an orbiting scroll member, and more particularly to such a scroll compressor which is composed of at least one of the above-mentioned The pressure (back pressure) of the back pressure chamber on the back of the scroll member generates a pull-in force, which opposes the pull-out force of the two scroll members received from the compressed working fluid. By suppressing the fluctuation of the back pressure, Improve overall insulation efficiency. Background technique [0002] The pull-in force is generated based on the pressurized amount of the working fluid compressed by the two scroll members. Therefore, in order to generate the pull-in force opposed thereto, the pressure (back pressure) of the back pressure chamber must be higher than the suction pressure. Conventional scroll compressors (scroll compressors configured in suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/02
Inventor 坪野勇佐藤英治土屋豪柳濑裕一松永睦宪
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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