Now a lot of air conditioner outdoor unit with high and low voltage switch and high and low voltage sensors, which specific installation in the air conditioner which parts? What is the working principle? Help analyze it
The working principle is the refrigeration system high pressure parts due to poor heat dissipation or pipeline congestion conditions to protect the compression
1, high-voltage low-voltage switch is used for system pressure protection devices. When the system operating pressure is too high or too low when the pressure switch action, air conditioning shutdown.
2, according to the level of action pressure, the main high-pressure switch, low pressure switch two; according to the switch action after the contact circuit to break off, there are normally open, normally closed two.
3, the pressure switch is a mechanical protection device, the common normally closed low-voltage switch when the low pressure below 0.05MPa will be disconnected, when the low pressure rise to 0.15MPa when the closure closed, the action principle: when the pressure switch inlet pressure When the low pressure rises above the recovery value, the internal diaphragm closes with the contact under pressure.
General high-voltage switch installed in the compressor high-pressure outlet 10--15cm Department
