refrigerated showcase display cooler Recommended reading: What is a thermostat
temperature controller (referred to as thermostat). The temperature controller in the display cooler can automatically control the temperature of the room to keep the temperature of the display cooler room within a certain range. There are 3 types of thermostats commonly used on display cooler:
bellows type thermostat. This type of thermostat is often used on window display coolers. This is a pressure type thermostat, the basin, capillary tube and bellows are filled with temperature sensing agent. The temperature sensor is placed at the return air port of the display cooler, which can directly feel the indoor temperature. When the indoor temperature changes, the bellows expands or contracts. The lever structure controls the opening and closing of the micro switch to control the rotation and Stop to keep the room temperature within a certain range.
diaphragm type thermostat. The bellows type and bellows type thermostat have similar structure and the same principle of action, except that the bellows is changed to a bellows.
Electronic thermostat. This type of thermostat usually uses a thermistor with a negative temperature coefficient as the temperature sensing element and is used in conjunction with an integrated circuit. In order to improve the sensitivity of the thermostat, the thermistor is often connected to the bridge circuit as the arm of the bridge. Its working principle is the same as the electronic thermostat used on the display cooler.
The classification of thermostat
can be divided into pressure type and non-pressure type according to the structure of temperature controller. Thermostats that use pressure are bellows and basin-type thermostats; non-pressure thermostats include electronic thermostats. This article is provided by refrigerated showcase display cooler
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