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Impeller, centrifugal compressor and air conditioner

A technology of impeller and impeller inlet, which is applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems of energy waste, low energy efficiency operation of compressors, etc., and achieve the goal of reducing outlet area, reducing impact loss and reducing wake loss Effect

Pending Publication Date: 2021-01-01
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved in this disclosure is that the impeller in the related art causes the compressor to operate inefficiently and waste energy, thereby providing an impeller, a centrifugal compressor and an air conditioner

Method used

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  • Impeller, centrifugal compressor and air conditioner
  • Impeller, centrifugal compressor and air conditioner
  • Impeller, centrifugal compressor and air conditioner

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the technical solution of the present disclosure will be clearly and completely described below in conjunction with specific embodiments of the present disclosure and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

[0036] combine Figure 1 to Figure 4 As shown, the present embodiment provides a kind of impeller 15, comprising: hub 1, blade 2; the junction of hub 1 and blade 2 is provided with a first round chamfer 3, the radius of the first round chamfer 3 at the inlet 4 of the impeller is R1, and the radius of the first chamfer 3 at the impeller outlet 5 is R2, which...

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Abstract

The invention provides an impeller, a centrifugal compressor and an air conditioner. The impeller comprises a hub and blades, wherein first round chamfers are arranged at the joints of the hub and theblades; and the radius of the first round chamfer at an inlet of the impeller is R1, the radius of the first round chamfer at an outlet of the impeller is R2, and that R2 is more than R1 is met. According to the impeller, through the round chamfers with different radiuses, the airflow mach number of the inlet of the impeller is changed, and impact losses are reduced; and the area of the outlet ofthe impeller is reduced, the wake losses of the impeller are reduced, the inlet flow field of a diffuser is optimized, and the whole-stage efficiency is improved.

Description

technical field [0001] The disclosure belongs to the technical field of refrigeration, and in particular relates to an impeller, a centrifugal compressor and an air conditioner. Background technique [0002] In the design of centrifugal compressors, the selection of working conditions usually takes the performance of full load as the only assessment index, and requires the centrifugal compressor to achieve the best performance and highest efficiency near the design working conditions. [0003] For refrigeration centrifugal compressors, their operating conditions are closely related to the temperature and humidity of the operating environment and indoor load requirements. In a year, or even in a day, the range of temperature changes greatly, and the range of cooling required also varies greatly, and the operating conditions of centrifugal compressors will also change greatly accordingly. Practice has proved that the operation and use of the centrifugal compressor does not al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28F04D29/30F04D29/66
CPCF04D29/284F04D29/30F04D29/667
Inventor 张治平叶文腾陈玉辉钟瑞兴
Owner GREE ELECTRIC APPLIANCES INC
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