Parameter selection and relevant knowledge of the thermostat
parameter selection and relevant knowledge of the thermostat temperature control of electric switch device called the thermostat or the temperature control switch. The thermostat or the temperature control switch the control of air conditioning room temperature range in 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. The thermostat or the temperature control switch control method is generally divided into two; One is controlled by the temperature change of the object being cooled for, more than another by using steam pressure type temperature controller is to control to the change of temperature of the cooling object, use the electronic hvac thermostat. type mechanical is divided into: steam pressure type thermostat, liquid expansion hvac thermostat, gas adsorption type hvac thermostat, metal expansion thermostat or the temperature control switch. 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 thermostat or the principle of temperature control switch power supply, the thermostat or the temperature control switch circuit is mainly achieved by thermistor. When the power to work, the fan power supply voltage of 7 v, when the power supply in temperature, thermal resistance value decreases, and voltage increase gradually, fan speed is improved. So you can keep the casing temperature to maintain a low level. In the case of the load is very light, can realize the mute effect. The load is large, can guarantee the cooling.
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