The classification of the temperature controller and action

Temperature controller is the thermostat ( Thermostat) , according to the working environment of temperature change, physical deformation inside the switch occurs, resulting in a certain special effect, produce a series of automatic control of the conduction or disconnect the action element, or electronic parts under different temperature, working condition of different principle to provide circuit temperature data, to the power supply way acquisition temperature data. To the thermostat manufacture principle, the thermostat is divided into: a. Relay, snap action thermostat: various models of collectively KSD, common such as KSD301 KSD302, such as the thermostat is a new kind of product, the bimetal thermostat mainly as all kinds of electric heating products overheating protection, usually used with thermal fuse series, snap action thermostat as the level of protection. Relay, while the thermal fuse Lou loss or failure cause electric heating element overtemperature, since as a secondary protection, effectively prevent burn out electric heating element and the fire caused by the accident. Second, liquid up thermostat: is when the temperature of the controlled object changes make thermostat heat division material ( General is liquid) The physical phenomenon of a corresponding heat bilges cold shrink, Volume change) , with heat connected with bellows expansion or contraction. To the lever principle, lead to switch on and off, to achieve a constant temperature fluid expansion thermostat with accurate temperature control, stable and reliable, open stop temperature difference is small, big range to adjust control temperature control, such as large overload current performance characteristics. Fluid thermostat is mainly used in home appliance industry, electric equipment, refrigeration industry such as temperature control occasion. Three, electronic temperature controller, electronic temperature controller ( Resistive) Is a method to measure the thermal resistance, generally USES the white gold, copper, tungsten and thermal resistor as temperature resistance, the resistance have their optimal point. Most of general family expenses air conditioning use thermistor type. Four, thermostat, pressure change thermostat through sealed inside temperature of the working medium temperature filling package and capillary, transform was charged with the change of temperature stress for the space or the change of volume, meet the temperature set point, through the elastic element and the occurrence mechanism, automatic close contact, in order to achieve the purpose of the automatic control of temperature. It consists of temperature, temperature setting main body, the implementation of open and close micro switch or automatic door of three parts. Pressure thermostat is applicable to refrigeration equipment ( Such as a refrigerator freezer, etc. ) And the heating device, etc.