The central air conditioner thermostat principle analysis
central air conditioner thermostat is to control the temperature of the air conditioning room electrical switchgear. Central air conditioner thermostat controlled by the temperature range of air conditioning room in 18 ℃ - commonly - 28℃。 Window air conditioner commonly used principle of central air conditioner thermostat is pressure to promote contact with broken. Its structure by corrugated pipe, thermal bag ( Test tube) , eccentric, micro switch, etc to form a sealed induction system and a transmit signal power system.
control methods generally fall into two kinds; One is controlled by the temperature change of the object being cooled for, with vapor pressure type fan coil hvac thermostat, another by the control to the change of temperature of the cooling object, use the electronic central air conditioner hvac thermostat. is divided into:
mechanical are divided into: steam pressure type thermostat, liquid expansion hvac thermostat, gas adsorption type thermostat, metal expansion type thermostat.
the vapor pressure thermostat is divided into: gas type, liquid gas mixed type and liquid type. Home air conditioning mechanical is given priority to with this type of thermostat.
electronic type can be divided into: resistive temperature controller and thermocouple temperature controller.
the role of the circuit system:
the role of air conditioner system is to control the air conditioning and multi-function run normally, protect the normal operation of the compressor and fan motors. Circuit system of the main components are: central air-conditioning thermostat, thermal protector, master switch, running capacitor, fan motor running capacitor are fixed inside the control box, etc. Used by type air conditioner electrical circuit diagram. The role of central air conditioner thermostat just control the start and stop of compressor.
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