Gas displacement method air conditioner vacuum pumping device and vacuum pumping method

A gas replacement method and a technology of a vacuuming device, which are applied in the field of air-conditioning vacuuming, can solve the problems of low vacuuming efficiency and easy residual moisture, and achieve the effect of improving efficiency

Inactive Publication Date: 2017-01-25
马鞍山汉德绿色建筑环境科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of low vacuuming efficiency and easy residual moisture in the refrigeration system in the prior art, and provide a kind of air-conditioning vacuum pumping device and vacuum pumping method by gas replacement method. Air pumping fully exhausts the air and moisture in the refrigeration system to achieve the purpose of vacuuming and improves the vacuum degree and vacuuming efficiency of the refrigeration system

Method used

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  • Gas displacement method air conditioner vacuum pumping device and vacuum pumping method
  • Gas displacement method air conditioner vacuum pumping device and vacuum pumping method
  • Gas displacement method air conditioner vacuum pumping device and vacuum pumping method

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Embodiment 1

[0037] combine figure 1 , a kind of air-conditioning vacuum pumping device of the gas replacement method of the present embodiment, mainly by vacuum pump 2, gas storage device 5 and gas storage bottle 7, on the pumping pipeline of refrigeration system 1, there are two branch roads, one branch road and vacuum pump 2 connected, and the first control valve 3 is set on the pipeline; the second control valve 4, the gas storage device 5, the third control valve 6, and the gas storage bottle 7 are connected in sequence on the other branch.

[0038] When vacuuming the refrigeration system, when the ultimate pressure of the vacuum pump performance parameters is reached, the corresponding pumping rate will decrease, and the final vacuuming is more difficult, and it is difficult to completely remove the water vapor. Therefore, the volume of the gas storage device 5 in this embodiment is scientifically designed and calculated according to the performance parameter curves such as the ultim...

Embodiment 2

[0042] The basic structure of the air-conditioning vacuum pumping device by gas replacement method in this embodiment is the same as that of Embodiment 1, the difference is that in order to facilitate the observation of the vacuum degree in the refrigeration system 1, a digital display vacuum gauge is installed on the pumping pipeline. 8. The digital display vacuum gauge 8 can detect the vacuum degree in the refrigeration system 1 in real time, judge according to the measured vacuum degree, and orderly switch and coordinate the three control valves to achieve the purpose of gas replacement and circular vacuuming.

Embodiment 3

[0044] to combine figure 2 , a kind of air-conditioning vacuum pumping method by gas replacement method in the present embodiment adopts the air-conditioner vacuum pumping device by gas replacement method in the above-mentioned embodiment to carry out vacuum pumping, and high-purity nitrogen is taken as an example for illustration, and the steps are as follows:

[0045] Step 1: open the first control valve 3 and the second control valve 4, and vacuumize the refrigeration system 1 and the gas storage device 5;

[0046] The main purpose of this step is to firstly evacuate the refrigeration system 1 and at the same time evacuate the gas storage device 5, so that the gas storage device 5 can be filled with high-purity nitrogen later.

[0047] Step 2, close the second control valve 4, open the third control valve 6, fill the high-purity nitrogen in the gas storage device 5, and then close the third control valve 6; It is charged into the gas storage device 5 first, and then the g...

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Abstract

The invention discloses a gas displacement method air conditioner vacuum pumping device and a vacuum pumping method, and belongs to the technical field of air conditioner vacuum pumping. The air conditioner vacuum pumping device comprises a vacuum pump, a gas storage device and a gas storage bottle, wherein the vacuum pump is connected with a refrigeration system; two branches are led out from a gas extraction pipeline of the refrigeration system; one branch is connected with the vacuum pump; a first control valve is arranged on the pipeline; a second control valve, the gas storage device, a third control valve and the gas storage bottle are sequentially connected onto the other branch; during vacuum pumping, through the mutual matching of the three control valves, impurity gas in the refrigeration system can be displaced; the circulation gas extraction on the refrigeration system can be realized, so that the gas and water in the refrigeration system can be sufficiently discharged; the vacuum pumping goal is achieved; the vacuum degree and the gas extraction efficiency of the refrigeration system are improved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning vacuuming, and more specifically, relates to a gas-displacing air-conditioning vacuuming device and a vacuuming method. Background technique [0002] For refrigeration equipment, refrigeration performance is an important performance index, so ensuring the vacuum degree of the refrigeration system before charging refrigerant is a key measure to improve refrigeration performance. [0003] At present, most refrigeration systems on the market use rotary vane vacuum pumps for simple vacuuming, that is, one-time vacuuming. This produces three disadvantages. One is that the time required for vacuuming is too long; the other is that the vacuuming is difficult to reach the specified value; [0004] If the vacuum degree does not meet the requirements, the refrigeration performance will decrease; when the refrigeration system of the unit contains too much non-condensable gas, the exhaust pressure o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B45/00
CPCF25B45/00
Inventor 韩胜忠陈涛
Owner 马鞍山汉德绿色建筑环境科技有限公司
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