Turbo machinery and its diffuser
An impeller machine and diffuser technology, applied in the field of compressors, can solve the problems of airflow backflow, etc., and achieve the effects of preventing airflow backflow and preventing impeller reversal.
Active Publication Date: 2017-02-08
GREE ELECTRIC APPLIANCES INC
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- Claims
- Application Information
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Problems solved by technology
[0005] The present invention aims to provide a diffuser to solve the problem in the prior art that the gas flowing out of the impeller is prone to flow backflow
Method used
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Embodiment Construction
[0027] 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.
[0028] One aspect of the present invention provides a diffuser, please refer to figure 1 and figure 2 , the diffuser includes a first channel plate 10 and a second channel plate 20, and an airflow channel 30 is formed between the first channel plate 10 and the second channel plate 20, the diffuser also includes: a diffuser 40, and the second channel plate 20 A channel plate 10 is connected, and the position of the diffuser 40 along the width direction of the airflow channel 30 is adjustable in the airflow channel 30; the first electromagnet 50 is arranged on the side of the diffuser 40 close to the airflow channel 30, It is used to drive the diffuser 40 to move toward the direction close to the second channel plate 20; the second electromagnet 60 ...
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The invention provides a turbo-machine and a pressure expander thereof. The pressure expander comprises a first channel plate and a second channel plate, wherein an air flow channel is formed between the first channel plate and the second channel plate. The pressure expander further comprises a pressure expansion part connected with the first channel plate and arranged in the air flow channel in the width direction of the air flow channel in a position-adjustable mode, a first electromagnet arranged on the side close to the air flow channel, of the pressure expansion part, and used for driving the pressure expansion part to move in the direction close to the second channel plate, and a second electromagnet arranged on the side away from the air flow channel, of the pressure expansion part, and used for driving the pressure expansion part to move in the direction away from the second channel plate. The air flowing speed can be controlled by adjusting the position of the pressure expansion part in the air flow channel, accordingly an air flow backflow phenomenon is prevented, and further the situation that an impeller reversely rotates is avoided.
Description
technical field [0001] The present invention relates to the field of compressors, more specifically, to a turbomachinery and a diffuser thereof. Background technique [0002] Centrifugal compressors often encounter the following problems during operation: when the load decreases, the flow and velocity of the gas flowing out of the impeller will decrease, which will cause the flow direction of the gas to gradually approach the direction of the impeller's circumferential tangent, and sometimes even The phenomenon that the airflow flows back into the impeller will eventually lead to the sudden reversal of the impeller, which seriously affects the stability of the compressor. [0003] At present, in order to prevent the performance instability of the above-mentioned compressor when the load decreases, a movable diffuser is generally added at the outlet of the impeller, that is, when the load becomes smaller, the airflow is reduced by moving the diffuser The width of the channel...
Claims
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IPC IPC(8): F04D29/46
CPCF04D29/462F05D2270/62
Inventor 钟瑞兴刘华张治平蒋楠谢蓉王宏兴蒋彩云
Owner GREE ELECTRIC APPLIANCES INC