Ejector-based vortex pipe refrigeration system

Abstract

The invention discloses an ejector-based vortex pipe refrigeration system, which comprises a compressor, a first condenser, a vortex pipe, a second condenser, a first evaporator, a first ejector, a first throttle valve, a second evaporator and a gas-liquid separator. The compressor is sequentially connected with the first condenser and the vortex pipe in series; a hot end outlet of the vortex pipe is sequentially connected with the second condenser, the first ejector, the gas-liquid separator, the first throttle valve, the first evaporator and the compressor in series; and a cold end outlet of the vortex pipe is sequentially connected with the first ejector, the gas-liquid separator and the compressor in series. In the system the ejector is used to recycle energy of a refrigerant at the cold end outlet of the vortex pipe, so the refrigeration efficiency of the vortex pipe is improved; the condenser is arranged at the hot end outlet of the vortex pipe so that the throttling efficiency of the system is higher; and the single-temperature-level, two-temperature-level or multi-temperature-level refrigeration effect is achieved.

Description

technical field [0001] The invention relates to a refrigeration system, in particular to a multifunctional refrigeration system with an ejector and a vortex tube. Background technique [0002] In recent years, with the improvement of people's living standards and the global warming environment, people's demand for refrigeration systems is increasing. As the demand for refrigeration equipment increases, the energy consumption of the refrigeration system will increase as a proportion of the energy consumption of the entire society. This puts forward wider and higher requirements for the application range and work efficiency of the refrigeration system. [0003] In the traditional refrigeration system, the pressurized refrigerant expands through the throttle valve after passing through the condenser, and absorbs heat in the evaporator to produce refrigeration effect. The throttling valve has better performance for liquid throttling, but for gas throttling, its working efficien...

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Problems solved by technology

However, if the ejector is directly used to achieve the cooling effect, the loss is large and the efficiency is low.

[0005] The Chinese patent application No. 200710037894.1 published on August 15, 2007 discloses a "refrigeration system using a vortex ejector", including a compressor, a condenser, an evaporator, and a vortex ejector. The outlet of the compressor is connected to the inlet of the condenser, and the condenser The outlet is connected to the nozzle of the vortex injector, the outlet of the high temperature end of the vortex tube of the vortex injector is connected to the inlet of the compressor, the outlet of the low temperature end of the vortex tube of the vortex injector is connected to the inlet of the evaporator, and the outlet of the evaporator is connected to the injection fluid of the vortex injector The invention connects the outlet of the ejector to the inlet of the vortex tube. Although the expansion energy of the refrigerant is recovered, after the refrigerant gas flows out of the high-temperature end of the vortex tube, it does not release heat and directly enters the compressor. The compressor consumes a lot of power, and the system is completely refrigerated by the fluid at the outlet of the cold end of the vortex tube. and the two outlets at the low temperature end, the condensate on the tube wall in the vortex tube will vaporize into the cold gas component in the central layer due to the high temperature of the peripheral layer, affecting the overall separation effect (Ding Yonggang, Hou Yu, Xiong Lianyou. The application of the vortex tube. Low temperature Engineering, Issue 1, 2007, P56-59), which is not conducive to the efficient work of the entire system

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