Air source ultralow temperature heat pump unit provided with supercooling frosting-restraining heat exchanger
A technology for heat exchangers and pump units, applied to refrigerators, refrigeration components, compressors, etc., can solve problems such as incomplete defrosting of heat exchangers, accumulation of frost, and difficulty in defrosting heat exchangers, and achieve complete defrosting Effect
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[0009] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention will be defined more clearly.
[0010] See figure 1 , The present invention provides an air source ultra-low temperature heat pump unit using a subcooling and frost suppression heat exchanger, including a jet enthalpy increasing compressor 1, a jet enthalpy increasing compressor 1 respectively connected with a first refrigerant pipeline 11 and a second refrigerant The other end of the first refrigerant pipe 11 is connected to the first port of the four-way valve 2, and the second, third, and fourth ports of the four-way valve 2 are respectively connected to the fourth refrigeration pipe. Refrigerant pipeline 21, fifth refrigerant pipeline 22, and sixth refrigerant pipeline 23....
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