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Refrigerant charging method and system

A refrigeration system and refrigerant technology, applied in the direction of refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve the problems affecting the refrigeration temperature and refrigeration efficiency, and achieve the effect of simple process, simplified charging operation and uniform effect

Pending Publication Date: 2020-12-22
中科赛凌(中山)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether the refrigerant is overcharged or undercharged, it will affect the cooling temperature and cooling efficiency

Method used

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  • Refrigerant charging method and system
  • Refrigerant charging method and system
  • Refrigerant charging method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A refrigerant charging system, see figure 1 , including a compressor 1 , a condenser 2 , an evaporator 4 , and a throttling device 3 . The refrigerant is charged into the refrigerant storage tank 5 in advance. The amount of refrigerant is matched to the refrigeration system. The refrigerant storage tank 5 has a valve I7. When charging refrigerant, connect the refrigerant storage tank 5 to the low-pressure pipeline close to the evaporator 4 in the refrigeration system, vacuumize the refrigeration system, open the valve I7 of the refrigerant storage tank 5, and charge the refrigerant into the refrigeration system ,finish homework.

Embodiment 2

[0042] Embodiment two, see figure 2 , the refrigeration system includes a compressor 1 , a condenser 2 , an evaporator 4 , a throttling device 3 , and a refrigerant storage tank 5 , where the refrigerant storage tank 5 is a liquid storage tank 6 . Refrigerant is charged into liquid storage tank 6 in advance, and the amount of refrigerant matches with refrigeration system. The liquid storage tank 6 has three valves, which are valve I7, valve II8, and valve III9. The valve I7 is connected to the high-pressure pipeline close to the condenser 2, and one end of the valve II8 and valve III9 is ​​respectively connected to the high-pressure pipeline on both sides of the valve I7. The road and the other end are connected to the refrigerant storage tank 5 . When charging refrigerant, connect liquid storage tank 6 to the high-pressure pipeline of the refrigeration system, open valve I7, vacuumize the refrigeration system, close valve I7, open valve II8, valve III9, and the refrigerant ...

Embodiment 3

[0043] Embodiment three, see image 3 , The refrigeration system includes a compressor 1 , a condenser 2 , an evaporator 4 , a throttling device 3 , and a refrigerant storage tank 5 . The refrigerant is charged into the refrigerant storage tank 5 in advance, and the amount of the refrigerant matches the refrigeration system. The refrigerant storage tank 5 is provided with a valve I7, and the valve I7 is simultaneously connected with the high-pressure pipeline between the compressor 1 and the condenser 2, and with the low-pressure pipeline close to the evaporator 4 and away from the throttling device 3 . When filling the refrigerant, the refrigerant storage tank 5 is connected to the refrigeration system pipeline, the refrigeration system is evacuated, the valve I7 of the refrigerant storage tank 5 is opened, and the refrigerant is charged into the refrigeration system. Compared with Embodiment 1, this embodiment charges refrigerant into the high-pressure system and low-pressu...

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PUM

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Abstract

The invention relates to a refrigerant charging method and system. The charging method comprises the steps that a refrigerant is enabled to be charged into a refrigerant storage tank in advance, and the refrigerant storage tank is enabled to be provided with a valve I connected with a refrigerating system; the refrigerant storage tank is connected with a high-pressure pipeline and / or a low-pressure pipeline of the refrigerating system; the refrigerating system is vacuumized; the valve I of the refrigerant storage tank is opened, so that the refrigerant enters the refrigerating system, and refrigerant filling is completed; and the filling system comprises a high-pressure pipeline, a compressor, a condenser, a low-pressure pipeline, a throttling device, an evaporator, the refrigerant storagetank, the valve I, a valve II and a valve III. The filling process is simple, the effect is unified, the operation steps are greatly simplified, and the method is particularly suitable for refrigerating systems needing multiple times of filling and multiple times of balancing, such as double-stage overlapping and mixed working medium refrigerating.

Description

technical field [0001] This patent application belongs to the technical field of refrigeration, and more specifically relates to a refrigerant charging method and system. Background technique [0002] At present, the charging process of the refrigerant needs to go through steps such as vacuuming-charging-operating. When charging, accurately measure the amount of refrigerant charged. Whether the refrigerant is overcharged or undercharged, it will affect the cooling temperature and cooling efficiency. For the R404A two-component refrigerant, it must be charged in liquid form when charging, otherwise the proportion of the charged components may be changed. The mixed working fluid whose refrigeration temperature reaches below -70 degrees is composed of multiple components with large differences in boiling points. When filling, it needs to go through four steps: vacuuming, first inflation balance, second inflation balance, and third inflation balance. The compressor status and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B45/00
CPCF25B45/00
Inventor 洪辉陈卡军吴薇
Owner 中科赛凌(中山)科技有限公司