Dehydrating device used in evaporator of a refrigeration system

This invention relates to a dehydrating device used in evaporator of a refrigerator (or an air conditioner) system, and particularly to use electro-hydrodynamic technique on an evaporator of a refrigeration (or an air conditioner) system so as to have the electric-charged condensed water on the evaporator removed quickly by means of an electric attractive face in order to enable the evaporator to have a better heat conductively for stepping up the operation efficiency of the refrigeration (or an air conditioner) system. A dehydrating device used in evaporator of a refrigeration (or an air conditioner) system, in which the evaporator includes a heat-exchanging assembly, and the dehydrating device includes an electrode member mounted under lower end of the heat-exchanging assembly at a suitable space, a positive voltage source, a negative voltage source, and two time controllers connected with the positive and negative voltage sources respectively; the two voltage sources are connected with the electrode member and the lower end of the heat-exchanging assembly respectively so as to form into an electric field therebetween; the two time controllers will provide a time difference so as to control the two voltage sources to furnish a power supply on a periodical switching basis; then, the condensed water under the heat-exchanging assembly will be pulled and removed from the surface of the heat-exchanging assembly by means of the periodical change of the electric field.