Device and method for combined ejection refrigeration and vapor compression refrigeration cycle

Abstract

The invention relates to a device and a method for the combined ejection refrigeration and vapor compression refrigeration cycle, aiming at improving the running efficiency of the refrigeration system and solving the problems that the unit power and the unit condensation rate of the compressor increase and the air transmission rate and the refrigeration coefficient decrease due to the regenerative cycle adopted in the vapor compression refrigeration cycle to make the refrigerant have a certain supercooling degree. On the vapor compression refrigeration cycle side, the air exhaust opening of a compressor (2) is connected with the refrigerant inlet of a generator (5), the refrigerant inlet of the generator (5) is connected with the inlet of a first condenser (3), the outlet of the first condenser (3) is connected with the refrigerant inlet of a supercooler (6), the refrigerant outlet of the supercooler (6) is connected with the refrigerant inlet of an evaporator (1) through a throttle valve (4), and the outlet of the evaporator (1) is communicated with the air suction opening of the compressor (2). The ejection refrigeration cycle and the vapor compression refrigeration cycle are combined in the device, and two refrigeration systems are connected through one generator and one supercooler.

Description

technical field [0001] The invention relates to a combined cycle device and method of jet refrigeration and vapor compression refrigeration, belonging to the technical field of refrigeration and low temperature. Background technique [0002] At present, the development of the vapor compression refrigeration cycle has reached a fairly mature stage. Because of its unique advantages, ejector refrigeration or heat pumps have different applications in different industries. The combination of the two can improve the energy efficiency ratio of the refrigeration cycle. There are also certain applications in production and life, but the use of the exhaust heat of the compressor to drive the jet refrigeration cycle to generate cooling capacity, so that it has not been used for the subcooling of the refrigerant in the compression refrigeration cycle. [0003] In the vapor compression refrigeration cycle, if the refrigerant has a certain degree of subcooling from the outlet of the conde...

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The object of the present invention is to provide a combination cycle device and method of jet refrigeration and vapor compression refrigeration, which improves the operating efficiency of the refrigeration system and solves the problem of making the refrigerant have a certain degree of subcooling in the existing vapor compression refrigeration cycle. However, the unit work of the compressor brought about by the heat recovery cycle is increased, the unit condensation capacity is increased, the gas transmission volume is reduced, and the refrigeration coefficient is reduced. The structure is simple, and the superheat of the refrigerant before condensation can be used to realize the superheat after condensation. Cold, to avoid energy waste caused by cold and heat offset, improve the energy efficiency ratio of the system

Images