| 摘要 |
<p>Device for defrosting evaporators of heat pumps comprising at least a fluid-fluid heat exchanger (20) exchanging heat between two thermo-vector fluids, one heated by the heat pump in the condenser (12), and one circulating in a circuit where there are introduced at least a circulation pump and and at least a gas-fluid heat exchanger (14) which at the fluid side is provided with two independent circuits, of which one is dedicated to defrosting and is crossed by the thermo-vector fluid circulating in said secondary circuit (26) and another where the evaporation phase of the vapor compression cycle occurs. The defrosting of the evaporation battery occurs by conveying therein the whole or a portion of the heat power of the heat pump, by means of the described circuit.</p> |
