Intelligent refrigerant charging and recovering device

Abstract

The invention discloses an intelligent refrigerant charging and recovering device which comprises a control circuit, a high-pressure manifold, a low-pressure manifold, a first pipeline valve, a second pipeline valve, a first pipeline, a vacuum valve, a vacuum pump, a first check valve, an oil filling cup, a refrigerant recovery unit, an electromagnetic valve and a liquid storage tank; the first end of the first pipeline valve is connected with a high-pressure pipeline of a vehicle air conditioning system; the second end of the first pipeline valve is connected with the first end of the electromagnetic valve, the second end of the second pipeline valve, the first end of the vacuum valve, the inlet of the refrigerant recovery unit and the first end of the first check valve; the second end of the electromagnetic valve is connected to the liquid storage tank; the first end of the second pipeline valve is connected to a low-pressure pipeline of the vehicle air conditioning system; the second end of the vacuum valve is connected with the vacuum pump; the second end of the first check valve is connected with the oil filling cup; the outlet of the refrigerant recovery unit is connected with the liquid storage tank; and the refrigerant recovery unit and the valves are all electrically connected with the control circuit. According to the technical scheme of the invention, an old refrigerant can be separated and reused and is suitable for maintaining an air conditioning of a vehicle or a house.

Description

technical field [0001] The invention relates to the field of air conditioner maintenance, in particular to an intelligent refrigerant filling and recovery device applied to automobile air conditioners. Background technique [0002] With the development of the economy, more and more families own cars, which brings convenience to people's travel, but after a period of time, the cooling effect of the air-conditioning system of the car will become worse. The refrigerant is discharged, and then new refrigerant is added. At present, the usual practice in the domestic auto maintenance industry is to use a vacuum pump to discharge the refrigerant in the air-conditioning system into the atmosphere, and then suck the new refrigerant in the can naturally by relying on the negative pressure in the system. This practice not only causes a waste of resources, but also seriously pollutes the environment and destroys the ozone layer. [0003] The State Intellectual Property Office of the P...

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Problems solved by technology

[0004] The present invention mainly solves the technical problem existing in the prior art that the recovered refrigerant cannot be processed and utilized in a timely manner, and provides an intelligent refrigerant filling that can directly process and utilize the recovered refrigerant, reduce waste, and be environmentally friendly. and recovery unit

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