Don't have a thermometer in the air conditioning?

Us households have air conditioning, air conditioning is a kind of household electrical appliances to adjust indoor temperature, adjust temperature, he is how to realize the regulation of temperature? First in order to realize the regulation of temperature must want to know the temperature first, if you don't know the indoor temperature, to talk about what temperature control? Air conditioning is the induction temperature thermometer inside then? The thermometer is in the air conditioning before we introduced thermistor, is generally installed in the indoor heat air inlet ( Also called return air mouth) Side, has the plastic support, for collection and indoor temperature, stated value ( 25° C) When is commonly 4. 75 k Ω Ω or 10 k, 15 k Ω, 25 k Ω negative temperature coefficient thermistor. Thermistor is connected with room temperature detection circuit, used to detect the indoor temperature, and provide indoor computer board, by comparing with the user set temperature, control the electronic expansion valve opening degrees outside and the compressor running frequency, heating or cooling of the interior temperature automatic control. At room temperature through the intake grille, air filters to a fixed in front of the indoor heat exchanger of negative temperature coefficient thermistor RT1, the change of RT1 value reflects the change of room temperature, R108 RT1 with benchmark resistance to + 5 v, after partial pressure sampling by resistance R107, supply foot TR CPU temperature detection, the voltage change actually reflects the RT1 resistance changes, and the temperature of the room temperature changes, the CPU voltage change by monitoring TR feet at room temperature, to perform the corresponding operation. So that air conditioner can according to the temperature of thermal sensor temperature change to achieve the purpose of controlling machine, so as to adjust the indoor temperature. Thermometer is in the life everywhere all have, only some of them are invisible, we can't see, but they really brought great convenience to our life.