Frequency conversion magnetic levitation compression expansion engine set

A technology of compression expansion and magnetic levitation, which is applied to compressors, compressors using turbines, refrigerators, etc., can solve the problems of complex structure of air conditioning units, failure to obtain expansion work, troublesome maintenance, etc., so as to save oil lubrication system, Reduce frictional power consumption and save material

Active Publication Date: 2008-01-16
广东西屋康达空调有限公司
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Problems solved by technology

[0003] The traditional air-conditioning and refrigeration system is composed of compressor, condenser, throttling mechanism and evaporator. The refrigerant flowing through the throttling mechanism is an isenthalpic process. This process only changes the pressure and temperature parameters of the refrigerant, and cannot obtain expansion. achievement
[0004] Due to the high rotation speed of the centr

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  • Frequency conversion magnetic levitation compression expansion engine set
  • Frequency conversion magnetic levitation compression expansion engine set
  • Frequency conversion magnetic levitation compression expansion engine set

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[0028] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0029] See Figure 1

[0030] Figure 1 is a diagram of the working principle of the prior art. In Figure 1, the air conditioning and refrigeration system is connected by a combination of compressor 1, condenser 2, throttling mechanism 3 and evaporator 4. The flow of refrigerant through throttling mechanism 3 is an isenthalpic process. This process only changes the pressure, Temperature parameters, unable to obtain expansion work.

[0031] Because the centrifugal compressor 1 rotates at a high speed, the conventional compressor 1 needs to be lubricated with lubricating oil between the drive shaft and the bearing in order to reduce friction and wear, and at the same time take away the friction heat, which requires a complex lubrication system. The structure makes the air-conditioning unit complex in structure, high in energy consumption, troublesome in m...

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Abstract

A variable frequency magnetic suspension compressional expansion assembly comprises a compressor, an evaporator and an expansion machine that are connected. A magnetic suspension bearing centrifugal compressor is directly connected with a radial flow type expansion machine via a shaft, the shaft is suspended on a left radial magnetic suspension bearing, a right radial magnetic suspension bearing and an axial magnetic suspension bearing, a variable frequency motor is provided between the left radial magnetic suspension bearing and the right radial magnetic suspension bearing and used for driving the centrifugal compressor; and the radial flow type expansion machine comprises an air inlet chamber and an air outlet pipe, nozzles and impellers are provided between the air inlet chamber and air outlet pipe and passed through the air inlet chamber and air outlet pipe, and the impellers are fixedly connected on the shaft. The power from expansion is transmitted to the compressor, and the refrigerant after expansion is entered into the evaporator to carry out evaporative cooling; after being evaporated in the evaporator, the refrigerant is sucked by the compressor to carry out circulatory flow; and the magnetic suspension bearings assure that the shaft does not contact with the bearings when the assembly operates, so that lubrication via lubricating oil is not needed.

Description

technical field [0001] The invention relates to a central air-conditioning refrigeration device, in particular to a frequency conversion magnetic levitation compression expansion unit. Background technique [0002] In the refrigeration and air-conditioning industry, saving energy is the primary issue to measure the advanced nature of products. The country has a series of measures for energy saving. In public buildings, the electric energy consumed by air conditioners accounts for more than 30% of the total electric energy. It is of great significance to save the electric energy of air conditioners. [0003] The traditional air-conditioning and refrigeration system is composed of compressor, condenser, throttling mechanism and evaporator. The refrigerant flowing through the throttling mechanism is an isenthalpic process. This process only changes the pressure and temperature parameters of the refrigerant, and cannot obtain expansion. achievement. [0004] Due to the high ro...

Claims

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Application Information

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IPC IPC(8): F25B11/04F25B9/06F16C32/04F04D29/058
Inventor 蔡湛文周子成
Owner 广东西屋康达空调有限公司
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