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Volute and compressor

A technology for compressors and centrifugal compressors, applied in the field of compressors, can solve problems such as flow loss, and achieve the effects of reducing flow loss, increasing resistance, and preventing separation

Pending Publication Date: 2021-07-27
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention discloses a volute and a compressor, which solves the problem of flow loss caused by boundary layer separation and secondary flow caused by gas passing through the volute when the centrifugal compressor is in operation

Method used

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with embodiment, but is not limited to the content on the description.

[0026] When the fluid passes through the surface, the speed will gradually decrease due to friction to form a boundary layer. When the boundary layer separates, a vortex will be formed, which will cause the fluid in the boundary layer to flow in reverse, reduce the co-flow area of ​​the main channel, and cannot play the role of diffusion. At the same time, due to the speed difference between the airflows flowing in the volute, the inner wall of the fluid volute will generate a secondary flow perpendicular to the fluid direction, disturbing the flow field in the main flow area.

[0027] Such as figure 1 As shown, according to the first embodiment of the present invention, a volute is disclosed, the volute is used in a centrifugal compressor, the inner wall 11 of the volute is provided with a guide groove 12, and the guide groove 12...

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PUM

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Abstract

The invention discloses a volute and a compressor. The volute is used for the centrifugal compressor, a flow guide groove is formed in the inner wall of the volute, and the flow guide groove is used for restraining the flow field direction of a boundary layer generated by fluid flowing. According to the volute, the flow guide groove is formed in the inner wall of the volute, the direction of a flow field can be restrained through the flow guide groove, the boundary layer formed by fluid is disturbed, the boundary is not prone to expansion, the boundary layer is prevented from being separated, and blocking clusters are prevented from being formed; and in addition, by restraining the direction of the flow field, the resistance in the direction perpendicular to the fluid can be increased, so that secondary flow is prevented from being formed, and the flow loss is reduced.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a volute and a compressor. Background technique [0002] As a general power source, air compressors are widely used in machinery, automobiles, medical care, food, electric power, building materials, petroleum, chemical and military industries. According to the different compressor methods, there are common centrifugal air compressors, screw air compressors, scroll air compressors, etc. [0003] In terms of new energy, hydrogen fuel cell vehicles have high power performance, fast hydrogen refueling, and long cruising range, which is the most strategic breakthrough for new energy vehicles in the 21st century. Compressors provide high-pressure air sources for fuel cell systems. Compared with screw compressors and scroll compressors, centrifugal air compressors can provide air sources with higher pressure ratios, significantly improving the power density and overall performance ...

Claims

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Application Information

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IPC IPC(8): F04D17/10F04D29/30F04D29/42F04D29/66
CPCF04D17/10F04D29/30F04D29/4226F04D29/666F04D29/667
Inventor 刘华张治平陈玉辉叶文腾
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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