Air source heat pump defrosting device with hot air used for evaporating initial liquid drops

• Main Authors: LIANG CAIHUA, ZHANG XIAOSONG, YANG MINGTAO, WANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2014
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The utility model discloses an air source heat pump defrosting device with hot air used for evaporating initial liquid drops. The air source heat pump defrosting device comprises a refrigerant loop and an air loop. The refrigerant loop comprises a compressor, a four-way valve, an indoor heat exchanger, a first check valve, a second check valve, a third check valve, a fourth check valve, a first solenoid valve, a second solenoid valve, a third solenoid valve, a liquid storage device, a drying filter, an electronic expansion valve, an outdoor heat exchanger, a gas-liquid separator and an air heat exchanger. The air loop comprises an outdoor heat exchanger, an air heat exchanger, a first electric air door, a fan, a second electric air door, a third electric air door and an air supply nozzle. The air source heat pump defrosting device is short in defrosting time and low in defrosting heat consumption, the defrosting process and the heating process can be conducted at the same time, thermal comfort of an air condi