A surface cooler defrosting device for purifying air conditioning system

The utility model provides a surface cooler defrosting device for purifying air conditioning system has the heater that is used for heating the heat transferring medium, and the heater feeds through with liquid trap, knockout respectively, and the liquid trap says with the drain pipe of surface cooler and feed through that the knockout feeds through with the feed liquor pipeline of surface cooler,sets up the circulating pump between heater and knockout, set up electric heating pipe and the steam pipe that is used for heating the heat transferring medium in the heater. Have liquid trap and knockout, be convenient for like this collection or outflow heat transferring medium, the device utilize air conditioning system's self heat transferring medium, messenger's heat transferring medium fromliquid trap entering, then heat in the heater, getting into the surface cooler through the shunt at last and carry out the defrosting, the surface cooler is difficult for the problem of defrosting among the solution low tempe