Kick type temperature controller

Abstract

The invention provides a sudden-jump type temperature controller, comprising a shell, a dual-metal sheet which is arranged inside the shell, a switch which is used for turning on or turning off an electro-thermal circuit, and a control part which controls the closing or the opening of the switch when the dual-metal sheet suddenly jumps; the sudden-jump type temperature controller is characterized in that a chamber is formed by the internal wall of the shell and the dual-metal sheet; at least one heating resistance which is arranged to be closely adjacent to the dual-metal sheet suspends in the chamber; the heating resistance is provided with a pair of pins which are respectively fixedly connected at one end of each of two wiring terminals which are used for conducting the heating resistances; the other end of each of the two wiring terminals passes through the shell and are extended out of the shell. Compared with the prior art, the sudden-jump type temperature controller is provided with the high-precision metal film resistance in the working space of the dual-metal sheet; when the temperature is reduced in the normal working environment of the temperature controller product, the dual-metal sheet obtains the compensation power by the heating resistance and certain sudden-jump temperature is achieved locally.

Description

technical field [0001] The invention relates to a thermostat, in particular to a snap-type thermostat applied to home appliances such as clothes dryers, disinfection cabinets, and electric heaters. Background technique [0002] The existing thermostat mainly uses the temperature-sensitive disc (bimetal) to produce bending deformation when the temperature changes to control the connection and closure of the switch contact, so as to achieve the normal operation of the electrical appliance and the power-off of the electrical appliance. Protect. Because the temperature-sensing disc (bimetal) is deformed suddenly by judging whether the ambient heat source reaches a predetermined temperature, when the temperature of the ambient heat source changes, the working reliability of the thermostat will also be affected. [0003] After the model of the bimetal strip is selected, the jump temperature limit value of the bimetal strip is also fixed. When the working temperature of the ambien...

AI Technical Summary

Problems solved by technology

Since the temperature-sensing disc (bimetal) is deformed suddenly by judging whether the ambient heat source reaches the predetermined temperature, when the temperature of the ambient heat source changes, the working reliability of the thermostat will also be affected

[0003] After the model of the bimetal strip is selected, the jump temperature limit value of the bimetal strip is also fixed. When the working temperature of the ambient heat source is lowered, such as the thermostat is The drying temperature is 60°C, and the jump temperature of the bimetal sheet of the selected model is also 60°C, while the drying temperature of the second type of clothing only needs to be 40°C, so that when the dryer is drying the second When the clothes of the second type are used, the original bimetal sheet is still considered to be within the normal working range when it exceeds 40°C, without sudden deformation, which will damage the second type of clothes and reduce the use of the dryer. reliability and safety

Therefore, ordinary thermostats cannot change the control temperature when the thermostat is working. Only by replacing the bimetal sheet to meet the electrical products with different working temperature control, which increases the manufacturing cost and limits the scope of use of the thermostat.

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