What is the role of automotive air conditioning pressure switch?
The function of the automobile air conditioner pressure switch is: the application of the mechanical pressure switch in the automobile air conditioner is installed in the refrigerant circulation loop of the automobile air conditioner to detect the pressure of the refrigeration cycle system, and when the pressure is abnormal, the corresponding protection circuit is activated to prevent the System damage.
Installed in automotive air conditioning refrigerant circulation pipeline, common pressure switches mainly include high pressure switch, low pressure switch, double pressure switch and triple pressure switch.
When the air conditioner is in use and the heat sink is blocked, the cooling fan does not turn, or the refrigerant is excessive, the system pressure will be too high. If it is not controlled, excessive pressure will damage the system components.
The high voltage switch is installed in the high pressure pipeline, and is generally installed on the liquid storage dryer, and is connected in series in the electromagnetic clutch circuit or the condenser fan circuit of the compressor. When the system pressure is too high, the high-voltage switch acts, cut off the clutch circuit or turn on the cooling fan high-speed block circuit to prevent the pressure from rising continuously and avoid damage to the system.
This article is from ALLICDATA ELECTRONICS LIMITED.