Impeller diffuser, water vapor centrifugal compressor and air conditioning unit
A technology of centrifugal compressors and diffusers, which is applied in the direction of machines/engines, mechanical equipment, non-variable pumps, etc., can solve the problem of low working capacity per unit mass of compressors, and improve working capacity and improve Effect of Airflow Conditions
Pending Publication Date: 2021-06-11
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0005] The embodiment of the present invention provides an impeller diffuser, a water vapor centrifugal compressor, and an air-conditioning unit to solve the problems of the water vapor centrifugal compressor in the prior art caused by the high temperature of the water vapor between stages. The technical problem of low unit quality and work ability
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[0023] 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.
[0024] Based on the technical problems in the prior art, the present invention designs a new interstage air supply cooling structure. By improving the impeller diffuser and introducing high-pressure and low-temperature cooling water to cool the interstage high-temperature water vapor, it can quickly Reduce the exhaust superheat of the low-pressure stage of the water vapor compressor, and rectify the inlet gas of the high-pressure stage at the same time, improve the airflow conditions of the impeller inlet of the high-pressure stage, and the low-temperature cooling water used for inter-stage cool...
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The invention provides an impeller diffuser, a water vapor centrifugal compressor and an air conditioning unit. According to the embodiment, the impeller diffuser comprises a diffuser body and blades arranged on the diffuser body, a liquid spraying structure is arranged on the diffuser body and comprises a liquid inlet and a liquid spraying opening which communicate with each other, the liquid inlet is used for communicating with a high-pressure and low-temperature cooling water pipeline, and the liquid spraying opening is used for communicating with the space where the blades are located. During use, high-pressure and low-temperature cooling water is introduced into the liquid inlet through the high-pressure and low-temperature cooling water pipeline, then the high-pressure and low-temperature cooling water is sprayed into the space where the blades are located through the liquid spraying opening, the high-pressure and low-temperature cooling water cools and reduces the superheat degree of low-pressure-stage exhaust, rectifies gas and improves the air flow condition of an inlet of a high-pressure-stage impeller, the high-pressure-stage working capability is improved, and meanwhile the working capacity of the compressor can also be improved through inter-stage air supply.
Description
technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to an impeller diffuser, a water vapor centrifugal compressor and an air conditioner unit. Background technique [0002] Heat pump technology is recognized at home and abroad as a method that can effectively recover waste heat. The heat pump working medium is used to evaporate and absorb heat in the evaporator to recover industrial waste heat. After the evaporated steam is compressed by the compressor to raise the temperature and boost the pressure, its energy grade is improved. And condensed in the condenser, the released heat can be used for industrial heating, etc., and the condensed liquid working medium is returned to the evaporator through the throttle valve to complete the cycle. [0003] There is a large amount of waste heat at 80-90°C in the industrial field, and there is also a demand for heat sources at 120-130°C. Water or steam (R718) is used as a natural...
Claims
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Login to View More IPC IPC(8): F04D29/44F04D29/58
CPCF04D29/444F04D29/5846
Inventor 刘华张治平李宏波钟瑞兴蒋楠陈健
Owner GREE ELECTRIC APPLIANCES INC