Working principle of the thermal components, often using thermal expansion coefficient of different bimetallic strip or inflatable membrane box, etc. The bimetal sheet is made of two different metals. When the temperature changes, the bimetal sheet will bend and deform due to the different coefficient of thermal expansion. The inflatable capsule is filled with gas inside. When the temperature changes, the gas expands or contracts to make the capsule deformable. Controller: thermal components from the reception, comparison and analysis with the set temperature, determine whether need to adjust the temperature, then send control instructions. Actuator: according to the instruction from the controller, the control of heating or cooling equipment to control or adjust the working status, such as relay control circuit on and off, the electromagnetic valve to control the flow of fluid, etc.,
in order to realize the environmental temperature regulation. Structure thermal components: if the bimetallic strip, inflatable membrane box, etc., is the core component of perceived temperature changes. Control circuit, including all kinds of electronic or mechanical device, used for processing temperature components from the signal, and send control instructions. Actuators, such as relay, solenoid valve, etc., according to the operation of the control instruction to control external devices. Shell: protect the internal components, convenient installation and fixed at the same time. Characteristics of advantages: simple structure, high stability, is not affected by factors such as electronic components ageing; Long service life, generally up to more than 10 years; Easy maintenance, only regular inspection and cleaning; The price is relatively low, suitable for users with limited budgets. Disadvantages: low accuracy, may not be able to satisfy the high precision temperature control requirements; The slow response speed is not suitable for scenarios that require rapid temperature adjustment.
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