Automatic defrosting device for heat pump evaporators

摘要

The device always initiates the defrosting process when the difference between the temperature signals emitted by an external air temperature sensor (13) and a temperature sensor (11) at the outlet of the evaporator (12) exceeds a predetermined positive value and the temperature sensor (11) at the outlet of the evaporator (12) emits an evaporator temperature signal which lies below a predetermined value. <IMAGE>