Impeller, compressor and air conditioning unit

A centrifugal compressor and impeller technology, applied in the field of compressors, can solve problems such as not being able to meet different refrigeration needs

Pending Publication Date: 2022-03-01
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides an impeller, a compressor and an air-conditioning unit to solve the technical problem that the impeller of the centrifugal compressor in the prior art cannot meet different cooling requirements

Method used

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  • Impeller, compressor and air conditioning unit
  • Impeller, compressor and air conditioning unit
  • Impeller, compressor and air conditioning unit

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0026] Such as figure 1 with figure 2 As shown, the present invention provides an impeller, which includes a disc 10 and blades 20 arranged on the disc 10 . The axis of the disc 10 forms a first ray X towards the blade root 21a of the leading edge 21 of the blade 20, and forms a second ray Y from the axis of the disc 10 to the tip 21b of the leading edge 21 of the blade 20. The tip of the edge 21 forms a pre-bending angle e, which is the angle between the first ray X and the second ray Y.

[0027] In the process of use, due to the change of working conditions, the flow state of the inlet of...

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Abstract

The invention provides an impeller, a compressor and an air conditioning unit. The impeller comprises a wheel disc and blades arranged on the wheel disc. The axis of the wheel disc faces the blade root of the front edge of the blade to form a first ray, the axis of the wheel disc and the blade top of the front edge of the blade form a second ray, the blade tip of the front edge of the blade forms a pre-bending angle, and the pre-bending angle is an included angle between the first ray and the second ray. When the compressor operates at a non-design point, due to the fact that the pre-bending angle is increased, airflow firstly makes contact with the blade top position, under the stress intensity, the blade bends backwards and keeps the same as the blade root position, too large impact cannot be generated, the compressor envelope design is met, and the impeller meets different refrigeration requirements.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to an impeller, a compressor and an air conditioner unit. Background technique [0002] As a general power source, compressors are widely used in machinery, automobiles, medical, food, electric power, building materials, petroleum, chemical and military industries. According to the different compressor methods, the common ones are centrifugal compressors, screw compressors, scroll compressors, etc. [0003] Centrifugal chillers are the main models of air conditioning systems in public buildings, especially large public buildings. They are widely used in comfort air conditioning, data centers, district energy and heat pumps. Their energy efficiency levels have a significant impact on public building energy consumption. The impeller is the core component of the function transformation in the centrifugal compressor, and the quality of the impeller design directly affects the perfo...

Claims

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Application Information

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IPC IPC(8): F04D29/30F04D29/28F25B31/00F24F13/00
CPCF04D29/30F04D29/284F25B31/00F24F13/00
Inventor 叶文腾张治平钟瑞兴陈玉辉
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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