Evaporation and condensation heat pump unit and control method thereof

• Main Authors: LI QINGCHUN, LIANG CONGNENG, HUANG GUOBIN, TANG LI, WANG LIANGTIAN, ZHANG NANA
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2023
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; RANGES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; VENTILATING; WEAPONS

The invention provides an evaporation and condensation heat pump unit which comprises a shell and tube heat exchanger, a tube fin heat exchanger, an evaporation heat exchanger and a throttling valve. Through specific arrangement of pipelines and one-way valves, a refrigerant sequentially passes through the tube fin heat exchanger, the evaporation heat exchanger and the shell and tube heat exchanger during refrigeration; during heating, a refrigerant sequentially passes through the shell-and-tube heat exchanger, the evaporative heat exchanger and the finned tube heat exchanger, compared with the prior art, the refrigeration and heating functions can be achieved through one set of equipment, meanwhile, cold water and hot water can be correspondingly prepared, meanwhile, through the connection, the finned tube heat exchanger can conduct pre-cooling during refrigeration, and the heat exchange efficiency is improved. And during heating, the evaporative heat exchanger can deeply supercool a refrigerant, so that the