Defrosting method and device for evaporating defrosted refrigerant through special evaporator

An evaporator and refrigerant technology, which is applied in the direction of household refrigeration devices, refrigerators, refrigeration components, etc., can solve the problems of increased refrigerant mass flow rate, reduced refrigeration system cooling capacity, and reduced evaporator area, so as to improve regulation performance, increase the cooling capacity, and facilitate the superheating effect of return air

Pending Publication Date: 2020-08-14
GUANGDONG PROVINCE MODERN AGRI EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Defrosting method and device for evaporating defrosted refrigerant through special evaporator
  • Defrosting method and device for evaporating defrosted refrigerant through special evaporator

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Embodiment 1

[0030] see figure 2 In this embodiment, the defrosting device using a dedicated evaporator to evaporate the defrosting refrigerant is integrated in the refrigeration system, and includes a method for diverting the refrigerant in the main refrigeration pipeline 12 to the evaporator 3 (a) to be defrosted The defrosting pipeline 1, the dedicated evaporator 5 for the defrosted refrigerant to evaporate and absorb heat, and the defrosting outlet pipeline 4 for transporting the defrosted refrigerant to the dedicated evaporator 5, all The defrosting pipeline 1 is connected to the refrigeration main pipeline 12, the head end of the defrosting liquid outlet pipeline 4 is connected to the outlet of the evaporator 3 (a) to be defrosted, and the end is connected to the inlet of the special evaporator 5 place.

[0031] see figure 2 , the first end of the defrosting pipeline 1 is connected between the compressor 2 and the condenser 7, and the end is connected to the inlet of the evaporat...

Embodiment 2

[0043] The difference from Embodiment 1 is that in this embodiment, the vapor-liquid mixture refrigerant is obtained by cooling the gas refrigerant or mixing the gas refrigerant and liquid refrigerant, and the vapor-liquid mixture refrigerant is used as the defrosting medium Yu defrost. In this way, using the vapor-liquid mixture whose heat absorption capacity is not less than the heat release capacity as the defrosting medium is not only easy to control, but also does not reduce the refrigeration efficiency of the refrigeration system.

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25B49/02F25D19/00F25D21/06
CPCF25B47/02F25B49/02F25B2347/02F25D19/00F25D21/06
Inventor 刘清化马道宽龚丽易磊陈煜龙吴耀森陈永春刘军曾小辉
Owner GUANGDONG PROVINCE MODERN AGRI EQUIP RES INST
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