This is an endless, the compressor is transformed into a vacuum pump
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Recently, I saw that an old driver used a compressor as a vacuum pump, and it is said that there are many benefits, such as: simple and practical, the second -hand compressor can be transformed, the price is affordable;
Xiao Niba will popularize this knowledge here. The content comes from the Internet. If there is something wrong, please leave a message to correct it.
Regarding this issue, Xiaomi also sent it to the VIP group for everyone to discuss, and the friends also put forward their different views. We will tell you the conclusions of the discussion.
1 Let’s take a look at the actual cases of netizens
As the so -called masters are in the folk, let’s first feel the vacuum pump that everyone uses the compressor to transform:
1. Use the refrigerator compressor to transform
2. Use the air -conditioning compressor to reconstruct
2 The method of compressed vacuum pump
We use the refrigerator compressor below to transform into a vacuum pump, and the remaining compressors are the same.
It is more convenient to use the three -way inspection valve to repair the refrigerator. There are 2 valves, 2 pressure gauge thread interfaces, and 3 copper tube thread joints on the three -way inspection valve, as shown in the figure below:
(1) 1 refrigerator compressor
First cut off the refrigerator compressor process pipe; then welded a copper tube with a diameter of 6mm or 8mm, about 20cm in diameter; then put it into the nut on this copper pipe, and finally hit a speaker on this copper pipe mouth. The mouth can be facilitated to repair the valve connection.
(2) 2 pressure gauges:
A temperature vacuum pressure gauge with a Q1MPa ~ 1.6MPa, and a high pressure gauge with 0MPA to 1.6 MPA.
(3) 3 copper tube thread joints:
The thread connector in the middle is connected to the process tube of the refrigerator compressor. The thread connector of the vacuum pressure meter is connected to the firing pipe or exhaust pipe for the compressor for the vacuum pump. Connecting the equipment of the refrigerant.
4 Flame and suppress leakage
The exhaust pipe of the compressor used for vacuum pumps is connected to the copper tube thread joints on the vacuum pressure meter on the three -way inspection valve (at this time the airback pipe on the compressor used for the vacuum pump is connected to the air, suck into the air), turn off the maintenance Valve of the high pressure on the valve soil. Open the valve with a vacuum pressure.
Start the compressor for vacuum pumps, which is pressed to 10 atmospheric pressure (ie, the reading on the vacuum pressure gauge is 1MPa. The pressure test should not be higher than this value), turn off the valve with the vacuum pressure surface and stop.
Remove the compressor for vacuum pumps, and use a nut to seal the copper tube thread connector connected to the primer of the inspection valve, and then open the valve observation of the vacuum pressure surface. If the pressure value on the vacuum pressure gauge has not changed within half an hour, it means that the refrigeration system is not leaked. Otherwise, you must use a brush to dip the soapy water to paint the refrigerant circulating pipeline (the focus is on the welding site) to find the leakage point.
In order to effectively prevent the water in the air from entering the refrigeration system, you can first add a temporary dryer (which can be replaced with a desiccant) and a refrigerator with a combination of a refrigerator, and then connects the three -way inspection valve.
5 Pumping vacuum
Remove the nut A first, open the valve on the vacuum pressure surface, and let the air filled in the refrigeration system; then the compressor used for vacuum pumps is connected to the copper pipe joint of the vacuum pressure surface on the maintenance valve ( At this time, the exhaust pipes on the compressor for the vacuum pump are connected to the air to discharge the air).
Still close the valve on the high pressure surface on the three -way inspection valve (but the valve on the vacuum pressure surface is opened), and the compressor for the vacuum pump is vacuum. Room, 10 minutes later (previously-0.1MPa on the vacuum pressure gauge).
Turn off the valve on the valve on the three -way inspection valve, open the valve with a high -pressure surface, open the valve that fills the refrigerant equipment, and inject about 10G refrigerant in the refrigerant system, turn off the valve of the filling refrigerant equipment. Start the refrigerator for 10 minutes and stop.
To start the compressor for vacuum pumps, the vacuum is vacuum, turn off the valve on the high -pressure surface on the three -way inspection valve, open the valve on the vacuum pressure surface, and at the same time, it still uses a hair dryer to blow the refrigerator’s external pipelines and freezing rooms.
After 30 minutes, first turn off the valve valve on the valve on the three-way inspection valve (the readings on the vacuum pressure gauge before are -0.1MPa), and then stop. At this point, you can complete the vacuum work and irrigate the refrigerant.
The purpose of the above second and third steps is to effectively improve the vacuum in the refrigeration system, but the 10G refrigerant is wasteed.
6 Refrigeration Hundred VIP Group Analysis Security
This transformation method is very simple and practical, and the cost is very low.
But is this “vacuum pump” really safe?
Refrigeration Baccae VIP group
China and friends discussed this method in detail
The conclusion is:
This method has hidden safety hazards. It is not recommended to use this method:
Our Xiaojia has analyzed the reason for everyone:
Of course, we look forward to the deeper reasons and the technology Daniel to share with us;