Defrosting control device and method of air source heat pump dryer

• Main Author: LUO WENMEI
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2017
• 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 invention discloses a defrosting control device and method of an air source heat pump dryer. The method comprises the following steps that according to different ranges of outdoor environment temperature, whether outdoor coil pipe temperature, wind outlet speed of an outdoor evaporator, cumulative running time of a compressor and continuous running time of the compressor meet defrosting conditions or not is calculated, if the defrosting conditions are met, defrosting motion starts, defrosting time starts to be calculated when the defrosting motion starts, whether the defrosting time and the outdoor coil pipe temperature meet defrosting quit conditions or not is calculated, and if the defrosting quit conditions are met, the defrosting motion stops. According to the defrosting control method, whether the compressor is controlled to do the defrosting motion or not is calculated according to the outdoor environment temperature and the different defrosting conditions through an outdoor main control board, so t