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Compressor air supplementing structure and compressor

A technology of compressor and air supply port, which is applied in the field of compressors, can solve the problems of affecting the aerodynamic performance of the compressor and the high air mixing loss, and achieve the effects of reducing the mixing loss and improving the aerodynamic efficiency.

Pending Publication Date: 2017-09-15
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the embodiment of the present invention, a compressor air supply structure and compressor are provided to solve the problem in the prior art that the air supply brings about high air mixing loss and thus affects the aerodynamic performance of the compressor

Method used

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  • Compressor air supplementing structure and compressor
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Embodiment Construction

[0021] 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.

[0022] Please refer to figure 2 , when the compressor is running at the design point, after the gas refrigerant passes through the first impeller, since the refrigerant makes a circular motion with the first impeller, the absolute speed C of the air flow is composed of Cm and Ct, and the refrigerant air flow enters the diffuser channel at an absolute speed , impingement diffuser vane diffusion. After the gas refrigerant passes through the diffuser blades, it still has a relatively high rotation speed, and after passing through the reflux device for derotation, the rotation speed of the gas refrigerant is close to zero. exist figure 2 Among them, W is the relative speed, U is the rotation speed, C is the absolute speed, and W+U=C.

[0023] The gas supplement scheme in the prior art...

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Abstract

The invention discloses a compressor air supplementing structure and a compressor. The compressor air supplementing structure comprises a first diffuser, a first volute and a backflow device; the output end of the first diffuser is connected with the input end of the backflow device through the first volute, and the first volute is provided with an air supplementing opening. According to the compressor air supplementing structure, volute air supplementing is adopted as the air supplementing manner, and air supplementing refrigerants enter the compressor through an inlet of the first volute, flow in the circumferential direction of the first volute, and meanwhile enter a main flow zone through an inlet of the backflow device continuously. As the air supplementing refrigerants flow in the circumferential direction, and the air supplementing refrigerants have a high rotating speed which is the same as the main flow speed, mixing losses of supplemented air and main flow can be effectively reduced, and the aerodynamic efficiency of the centrifugal compressor is further improved.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a compressor air supply structure and a compressor. Background technique [0002] In a centrifugal compressor, since the temperature of the gas will rise sharply after being compressed, the specific volume of the gas is very large at high temperature, and the energy consumption of the compressor will increase sharply under the condition of ensuring the same cooling capacity. [0003] In order to reduce the power consumption of the compressor and increase the refrigeration capacity, a multi-stage compression refrigeration cycle is commonly used. At present, the most widely used is the "two-stage compression intermediate incomplete cooling refrigeration cycle" with a flash vapor separator (commonly known as an economizer). [0004] The two-stage compression refrigeration cycle is to mix the flash steam separated from the economizer with the exhaust gas from the low-stage compr...

Claims

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Application Information

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IPC IPC(8): F04D29/58F04D29/42F04D29/44
CPCF04D29/4206F04D29/444F04D29/5846F04D29/684
Inventor 刘增岳钟瑞兴蒋楠蒋彩云陈玉辉周义雷连冬欧阳鑫望
Owner GREE ELECTRIC APPLIANCES INC
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