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Centrifugal compressor

A centrifugal compressor and sealing slider technology, applied in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as affecting system performance, increasing development costs, etc., to improve reliability, reduce pressure loss, prevent The effect of gas return

Active Publication Date: 2015-04-29
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a centrifugal compressor to solve the technical problems of affecting the system performance and increasing the development cost when the check valve is used in the existing centrifugal compressor

Method used

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Embodiment Construction

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0025] Such as figure 1 and figure 2 As shown, the present invention provides a centrifugal compressor, comprising: a first cavity 10 and a second cavity 30, the first cavity 10 and the second cavity 30 respectively have a first end surface and a second end surface, and A medium communication channel C is formed between the first end surface and the second end surface. A first groove is arranged on the first end surface, and a first sealing slider 21 is arranged in the first groove, and a first chamber is formed between the first sealing slider 21 and the bottom surface and the side wall of the first groove. A, the first side of the first chamber A communicates with the low pressure air chamber D through the first pipeline with the first normally...

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Abstract

The invention provides a centrifugal compressor which comprises a first chamber which is provided with a first end face and the first end face is provided with a first groove, and a second chamber is provided with a second end face which is opposite to the first end face. A medium circulation channel is formed between the second end face and the first end face. A first cavity and a second cavity which are mutually separated to each other are formed inside the first groove. The first cavity is respectively connected with a low-pressure gas cell and a high-pressure gas cell through a first normally-closed valve and a first normally-open valve. The second cavity is respectively connected with the low-pressure gas cell and the high-pressure gas cell through a second normally-closed valve and a second normally-open valve. The centrifugal compressor can turn off the medium circulation channel quickly through a ring when a unit stops to achieve the goal of preventing the impeller from reversing, effectively reducing the set-up cost of preventing inversion, reducing the pressure loss caused by adopting inversion-preventing structure of a check valve and improving effectively the reliability of the whole centrifugal compressor by turning off an airflow channel to avoid backflow of the gas.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a centrifugal compressor. Background technique [0002] For centrifugal compressors in the air-conditioning field, when the condensing pressure is higher than the evaporating pressure, airflow backflow often occurs when the condensing pressure is higher than the evaporating pressure, causing the impeller to reverse suddenly and affecting the reliability of the compressor. The evaporating pressure is much higher, and the impeller suddenly changes from forward rotation to reverse rotation and receives a large impact force, which increases the possibility of the impeller loosening; second, the impact force of the airflow mainly acts on the blades of the impeller, which will cause the blades Fatigue damage, such as deformation, fracture, etc.; third, due to the reverse rotation of the impeller, the motor shaft is affected by the alternating stress, which is easy to cause the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/08
Inventor 赵志刚钟瑞兴张治平蒋楠谢蓉蒋彩云傅鹏闫秀兵
Owner GREE ELECTRIC APPLIANCES INC