The central air conditioning governor principle
principle of central air conditioning governor. Temperature controller is to control the temperature of the air conditioning room electrical switchgear. Temperature controller's control in air conditioning room temperature range, generally at 18 ℃ - 28℃。 Window air conditioner commonly used temperature controller based on pressure mechanism 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; One is controlled by the temperature change of the object being cooled for, more than the steam pressure type temperature controller, another by the control to the change of temperature of the cooling object, use the electronic temperature controller. is divided into: mechanical is divided into: steam pressure type hvac thermostat, liquid expansion 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. 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: temperature controller, thermal protector, master switch, running capacitor, fan motor running capacitor are fixed inside the control box, etc. Left is used by type air conditioner electrical circuit diagram. The effect of temperature controller is just control the start and stop of compressor. Working principle of the action effect of steam pressure type bellows in spring, spring tension is controlled by a knob on the panel, the capillary on the air conditioner indoor air suction FengKouChu, react to the indoor cycling return air temperature. When the room temperature rising to the setting temperature, thermal dose of gas expansion of capillary and bellows, bellows elongation and overcome the spring tension connected the switch contact, the compressor operation, refrigeration system, until the room temperature and fell to the set temperature, the heat pack gas contraction, corrugated pipe shrinkage action with spring and puts switch off position, make the compressor motor circuit is cut off. This action repeatedly, so as to achieve the goal of control room temperature.
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