Three-pipe heating and reclaiming air-conditioning system
An air-conditioning system, heat recovery technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of reduced heating capacity and reliability, and difficulty in meeting heating needs in cold regions in winter, so as to increase market sales and improve Low-temperature heating capacity and energy efficiency, the effect of upgrading grades
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[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0012] see figure 1 , the three-pipe heat recovery air conditioning system, including compressor 1, outdoor heat exchanger 3, indoor heat exchanger, branch pipe and electronic expansion valve, first three-way valve 21, second three-way valve 22 and plate heat exchanger 7. The indoor heat exchanger includes the first indoor heat exchanger 61 and the second indoor heat exchanger 62; the branch pipe includes the first branch pipe 81, the second branch pipe 82 and the third branch pipe 83; the electronic expansion valve includes the first Electronic expansion valve 41, second electronic expansion valve 42, third electronic expansion valve 43 and fourth electronic expansion valve 44; the solenoid valves include a first solenoid valve 51, a second solenoid valve 52, a third solenoid valve 53, a fourth solenoid valve valve 54 and the fifth solenoid valve 55. ...
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