Compound rapid defrosting method

Abstract

The invention relates to a compound rapid defrosting method. The compound rapid defrosting method is characterized by comprising the steps that S01, during operation of an air conditioner or a heat pump, the surface of a heat exchanger on the evaporation side is gradually frosted, and the frost layer is tightly adhered to the surface of the heat exchanger; S02, the heating defrosting process is started, the heat exchanger is heated, and the part, adhered to the surface of the heat exchanger, of the frost layer is melted first, wherein at the moment, the size of the frost layer is gradually decreased, and the adhesive force between the frost layer and the surface of the heat exchanger is rapidly reduced; and S03, the external force generating device is started, the external force is acted on the heat exchanger, the frost layer is made to move, the frost layer is stripped from the surface of the heat exchanger, and rapid defrosting is achieved.

Description

technical field [0001] The invention relates to a method for realizing rapid defrosting by using a composite technical means combining heating and external force for the frosting problem of a heat exchanger of an air conditioner or a heat pump, and belongs to the field of HVAC design. Background technique [0002] Air conditioners or air source heat pumps can take into account both cooling and heating functions, saving energy and environmental protection. However, under low-temperature environmental conditions, there is a problem of frosting on the surface of the outdoor heat exchanger during heating operation in winter; there is also a problem of frosting on the surface of the indoor heat exchanger during cooling operation. [0003] As the frost layer on the surface of the heat exchanger (evaporator) continues to grow, the thermal resistance of the heat exchanger increases, which leads to the deterioration of the system working condition; at this time, the heat exchanger mu...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of heating and defrosting is: the process consumes a lot of energy, and it is easy to affect the normal operation of the system;

[0010] The disadvantages of the anti-frost scheme are: higher requirements for structural design, and more complicated control strategies

[0011] For a long time, the frosting problem has been one of the most serious problems plaguing the development of the industry, and technicians have continuously proposed a variety of solutions, but they have not been able to solve this problem satisfactorily.