KSD 185-5D. Constant temperature seat of five-ring dry-burning prevention coupler of health pot KSD 185-5D. The temperature controller uses bimetal as the temperature sensing element, and uses the principle that the temperature sensing element bends and deforms due to temperature change, and has the elastic sheet of energy storage structure to make the moving contact move quickly, so as to achieve the purpose of disconnecting or connecting the circuit, thus achieving the effect of controlling the temperature.