Fully automatic gas recovery and filling device and method

Abstract

The invention provides a full automatic gas recovering and charging device which comprises a first pipeline, a first oil separator, a compressor, a second oil separator, a work tank and a second pipeline. One end of the first pipeline is communicated with a low-voltage charging end of a car air conditioning system. The first oil separator is respectively communicated with the first pipeline and the compressor. The work tank is respectively communicated with the compressor and the second pipeline. The second pipeline is communicated with a high-voltage charging end of the car air conditioning system. The position of the first pipeline is provided with a first magnetic valve which controls the on and off of the first pipeline. The second pipeline is provided with a second magnetic valve which controls the on and off of the second pipeline. The full automatic gas recovering and charging device further comprises a first pressure sensor and a controller. When the full automatic gas recovering and charging device is connected with the car air conditioning system, the first pressure sensor is connected with the car air conditioning system to detect the pressure inside the car air conditioning system, and the controller is electrically connected with the first pressure sensor, the first magnetic valve, the compressor and the second magnetic valve.

Description

technical field [0001] The invention relates to the technical field of automobile air-conditioning maintenance equipment, in particular to a fully automatic gas recovery and charging device and method. Background technique [0002] In the specific maintenance and refrigerant charging process of the automotive air-conditioning refrigeration system, basic operations such as refrigerant discharge or recovery, vacuuming and charging are inseparable. When repairing the air-conditioning system of a car, it is often necessary to disassemble the air-conditioning system. At this time, it is necessary to recover or discharge the refrigerant in the system. For the air-conditioning system that has been disassembled for repair or found to have too little refrigerant, the air-conditioning system must be completely evacuated with a vacuum pump before adding new refrigerant, in order to remove the air and moisture in the air-conditioning system. After the vacuuming is completed and the sys...

AI Technical Summary

Problems solved by technology

In this case, there are the following problems: 1) The requirements for operators are relatively high, professional training is required, and human errors are easy to occur in complex industrial operation processes; the consequences may be insufficient recovery of automotive air-conditioning refrigerants, inspection Incomplete leakage, no cleaning, inaccurate filling, and damage to the car air conditioner. 2) When the operator is busy at work, he can be lazy and reduce the operation steps, or do not operate in accordance with the operating specifications, resulting in illegal discharge of refrigerant and other impacts on equipment or Causes environmental problems such as air pollution, 3) Government regulations require that refrigerants must be recovered and purified for charging, which cannot be regulated due to the intervention of human factors

4) And for the maintenance enterprises, the labor cost for the maintenance of the air conditioner will increase and the cost will increase

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