Finned evaporator

Abstract

The invention relates to a finned evaporator which comprises a coiled tube and fins, wherein the fins are tensioned on the coiled tube, a flaring copper adapter tube is welded at the end of the coiled tube, one or more heating wires sequentially penetrate through the fins so as to enable the fins to be connected in series, two ends of the heating wires are connected with a power supply which is connected with a controller. Through the finned evaporator, formed frost on the surfaces of the fins can be removed.

Description

technical field [0001] The invention relates to a finned evaporator. Background technique [0002] Finned evaporator is the most widely used heat exchange equipment in gas and liquid heat exchangers. In the existing aluminum tube fin heat exchangers, copper pipe fittings are generally welded directly to the input and output ports of the aluminum tube heat exchanger, or a section of aluminum tube is welded from the input and output ports of the aluminum tube heat exchanger, and then Connect to the compressor, high pressure valve assembly and other components through copper piping. Since the heat transfer efficiency of the aluminum pipes is poor, and if all the copper pipes are used, the cost is high. Therefore, an evaporator with both high heat transfer efficiency and low cost has become a current problem. [0003] When the traditional heat pump heating hot water unit works at an ambient temperature below 0°C, frosting occurs, which affects the normal operation of the unit....

AI Technical Summary

Problems solved by technology

Since the heat transfer efficiency of aluminum pipes is poor, and if all copper pipes are used, the cost will be high. Therefore, an evaporator with both high heat transfer efficiency and low cost has become a current problem.

[0003] When the traditional heat pump heating hot water unit works at an ambient temperature below 0°C, frosting occurs, which affects the normal operation of the unit. Long-term frosting makes the unit unable to produce hot water

The traditional way to deal with the unit is to use electric heating to defrost or reverse the running direction of the heat pump system. Because in the long-term low temperature environment, the efficiency of ordinary electric heating is low and the defrosting effect is poor; The method of running direction is feasible in the case of short-term frosting, but the unit that works for a long time in a low temperature environment will have frequent system reverse operation, which has a great impact on the working life of the unit, resulting in unable to work properly

Images