Ejector type staged refrigeration cycle system capable of being used for hydrogen liquefaction and method of ejector type staged refrigeration cycle system

• Main Authors: GOU ZHONGWU, DU BINGTONG, CHEN JIANHUI, CAI MAOLIN, XU WEIQING
• Format: Patent
• Language: Chinese; English
• Published: 15.07.2022
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT EXCHANGE IN GENERAL; HEAT PUMP SYSTEMS; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The invention discloses an ejector type staged refrigeration cycle system capable of being used for hydrogen liquefaction. The ejector type staged refrigeration cycle system mainly comprises a compressor, a condenser, a regenerative heat exchanger, an expansion valve, a three-way control valve, a liquid observing device, a medium-temperature evaporator, a low-temperature evaporator, an ejector and the like. An outlet of the condenser is connected with an inlet of the condenser, the outlet of the condenser exchanges heat with output of the medium-temperature evaporator through the regenerative heat exchanger and then is input into a high-pressure inlet of the ejector, and then the high-pressure inlet of the ejector is divided into two branches through the three-way control valve, and one branch passes through the medium-temperature evaporator, exchanges heat through the heat regenerator and returns to the inlet of the compressor; and the other part passes through the expansion valve and the liquid observing de