Defrosting method and device for evaporating defrosted refrigerant through special evaporator

Abstract

The invention discloses a defrosting method and device for evaporating a defrosted refrigerant through a special evaporator. The defrosting method comprises the following steps: the refrigerant in a main refrigeration pipeline is divided into the to-be-defrosted evaporator, and the divided refrigerant serves as a defrosting medium to release heat to melt frost on the evaporator; the defrosted refrigerant is conveyed into the evaporator special for conducting evaporative heat absorption on the defrosted evaporator to form an independent evaporative heat absorption route; and the evaporated refrigerant in the special evaporator is conveyed back to a compressor for circulation work. According to the defrosting method, by adopting the special evaporator to conduct uniform evaporative refrigeration on the defrosted refrigerant, the evaporation area of a refrigeration system is increased, thus the evaporation temperature of the refrigeration system during defrosting is not lower than the evaporation temperature during no frosting, and the refrigerating capacity of the system is improved; and adjustability is high during exhausting of the compressor for defrosting, the degree of superheatis easy to control, meanwhile the refrigerant can stably and continuously work, and the stability of the system is high.

Description

technical field [0001] The invention relates to a defrosting technology of a refrigeration system, in particular to a defrosting method and device for evaporating a defrosting refrigerant by using a special evaporator. Background technique [0002] Refrigerant defrosting technology is an energy-saving technology. In the prior art, superheated gas refrigerant is generally used as the defrosting medium to defrost the evaporator; of course, liquid refrigerant is also used as the defrosting medium. In the existing defrosting process, when the defrosting medium passes through the evaporator to be defrosted, it will release heat to defrost, and then pass into the cooling evaporator for evaporative cooling. [0003] In the existing continuous defrosting refrigeration system, the defrosting liquid after defrosting usually enters the front-end pipeline of other evaporators that are performing refrigeration work, mixes with the refrigerant in the main refrigeration pipeline, and then ...

AI Technical Summary

Problems solved by technology

[0003] In the existing continuous defrosting refrigeration system, the defrosting liquid after defrosting usually enters the front-end pipeline of other evaporators that are performing refrigeration work, mixes with the refrigerant in the main refrigeration pipeline, and then enters the evaporator for further cooling. Refrigeration work; among them, due to the increase of refrigerant mass flow in the main refrigeration pipeline, the area of ​​the evaporator is relatively reduced. In order to achieve the set ambient temperature, the evaporation temperature needs to be lower than that of normal refrigeration work, which will Reduce the cooling capacity of the refrigeration system

Moreover, due to the relative reduction in the area of ​​the evaporator, the operating pressure of the system is relatively large and the stability is poor

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