Injection type refrigerating machine with middle heat exchanging part

Abstract

The invention discloses an injection type refrigerating machine with a middle heat exchanging part. The injection type refrigerating machine with the middle heat exchanging part comprises a first restricting element, an evaporator, a first ejector, a second ejector, a condenser, a second restricting element, a subcooler or an economizer, a circulating pump and a first generator, wherein a working fluid inlet of the first ejector and a working fluid inlet of the second ejector are communicated with a working medium outlet of the first generator, a driving fluid inlet of the first ejector is communicated with a working medium outlet of the evaporator, a working medium outlet of the first ejector is communicated with a driving fluid inlet of the second ejector, and a working medium outlet of the second ejector is communicated with a working medium inlet of the condenser. The injection type refrigerating machine with the middle heat exchanging part has the advantages that constraint of traditional thought is broken through; due to the fact that the middle heat exchanging part such as the economizer or the subcooler is adopted, gas phase working media of the economizer or the subcooler can directly enter the second ejector and do not need to be compressed again through the first ejector, then the load of the first ejector is reduced, and the refrigeration coefficient of a system is improved.

Description

technical field

[0001] The invention belongs to the technical field of refrigeration, in particular to an ejector refrigerator with an intermediate heat exchange component. Background technique

[0002] Ejection refrigeration technology is a heat-driven refrigeration technology. Compared with mechanical compression refrigeration technology, its main advantage is that it only consumes little mechanical energy and can directly use heat energy as the driving energy. It has the advantages of simple structure, small size and low cost. Low cost, reliable operation, long service life and other advantages. Jet refrigeration is a refrigeration method driven by low-grade energy, which can effectively utilize renewable energy such as solar energy and geothermal energy, as well as industrial waste heat and waste heat; the refrigerant used in jet refrigeration is mainly water, hydrocarbons or hydrofluorine Hydrocarbon refrigerants can avoid the use of CFCs or HCFCs refrigerants that des...

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