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Diffuser and compressor

A diffuser and compressor technology, applied in the field of compressors, can solve problems such as inability to effectively overcome surge, low efficiency of gas cooling in the middle channel, etc.

Pending Publication Date: 2017-11-17
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the embodiment of the present invention, a diffuser and a compressor are provided to solve the problems in the prior art that the cooling efficiency of the gas in the middle channel is not high and the surge cannot be effectively overcome

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0026] An embodiment of the present invention provides a diffuser, especially a one-stage diffuser used in a multi-stage compressor. The diffuser includes a body 1, wherein the body 1 is provided with refrigerant injection holes 2.

[0027] Since the diffuser is equipped with refrigerant spray holes 2, when the high-pressure liquid refrigerant passes through the refrigerant spray holes 2, it forms a mist-like liquid refrigerant. Since the mist-like liquid refrigerant has a stronger heat transfer capability than gas-state refrigerant, and is easier to evaporate than liquid refrigerant , therefore, not only can effectively improve the cooling effect of the gas in the middle channel of the compressor, but also will not cause liquid to appear in the impeller behind. In addition, direct in...

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Abstract

The invention discloses a diffuser and a compressor. The diffuser comprises a body, and a refrigerant spraying hole is formed in the body. Due to the adoption of the above technical scheme, when high-pressure liquid-state refrigerants pass through the refrigerant spraying hole to form fog-shaped liquid-state refrigerants, due to the fact that the fog-shaped liquid-state refrigerants are higher than gas-state refrigerants in heat exchange capacity and are easier than the gas-state refrigerants to evaporate, the cooling effect of the middle flow way gas of the compressor can be effectively improved, and liquid cannot appear in an impeller. In addition, the high-pressure liquid-state refrigerants are directly sprayed, the liquid spraying flow can be effectively improved, the speed of refrigerants in a runner can be improved, and surging can be effectively overcome.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a diffuser and a compressor. Background technique [0002] When the centrifugal compressor adopts multi-stage compression, cooling the gas in the middle channel can improve the compression efficiency of the subsequent stages. In refrigeration centrifugal compressors, the throttling gaseous refrigerant in the flasher is usually used to cool the gas in the middle channel of the compressor, but due to the high enthalpy of the gaseous refrigerant, the cooling efficiency is average; at the same time, because the flasher pressure cannot If it is too high, otherwise it is easy to cause gas supplementation with liquid, and the gas volume of supplementary gas can only be controlled in a small range. [0003] In addition, when the compressor is running close to the surge region, the gas volume in the middle flow channel is too small. At this time, a large amount of gas supply is requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/46
CPCF04D29/464
Inventor 陈玉辉张治平钟瑞兴蒋楠刘增岳周义蒋彩云雷连冬欧阳鑫望陈健
Owner GREE ELECTRIC APPLIANCES INC
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