Manually-reset overload overtemperature early-warning protection device
A manual reset and protection device technology, applied in the direction of automatically disconnected emergency protection devices, emergency protection circuit devices, circuit devices, etc., can solve the problems of re-failure safety, automatic reset, failure to know in advance and eliminate hidden troubles, etc. To achieve the effect of ensuring the safety of use
Active Publication Date: 2014-12-31
东莞市楷亿电子科技有限公司
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Problems solved by technology
However, existing electrical or electronic equipment usually only has a temperature switch or thermostat for overload and overtemperature protection with a single function. Since this type of device has no early warning function and manual power-off reset function, it is impossible for people to know and eliminate in advance. Potential failure, and some equipment has been automatically reset without eliminating the hidden danger of failure, so there is the possibility of failure again and potential safety hazards
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[0019] The following examples are further explanations and illustrations of the present invention, and do not constitute any limitation to the present invention.
[0020] refer to figure 1 , The manual reset overload and overtemperature early warning and protection device of the present invention includes a temperature control unit 10 , a manual power-off reset protection unit 20 and a step-down rectification unit 30 .
[0021] In this embodiment, the temperature control unit 10 includes a temperature controller 11 , a light emitting diode D2 connected to the step-down rectification unit 30 and a buzzer. The temperature controller 11 is a normally open type temperature controller, and its temperature measurement range is 20°C to 150°C. Preferably, the temperature control unit 10 is a jump-type temperature controller, and its temperature measurement range is 20°C to 150°C. like Figure 4 As shown, the input end of the temperature control unit 10 is connected to the power lin...
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An overload and over-temperature early warning protection device having a manual reset. The device comprises a temperature control unit (10) that provides an early warning when the load experiences over-temperature, a manual cut-off reset protection unit (20) that automatically cuts off the circuit of the load when the load experiences overload and over-temperature, and a step-down rectifier (30). The input end and the output end of the temperature control unit (10) are connected respectively to an alternating current source and the step-down rectifier (30). The input end and output end of the manual cut-off reset protection unit (20) are connected respectively to the alternating current source and the load. When an electric device experiences overload and over-temperature, the device of the present invention issues an early warning signal for checking and removing malfunctions in advance. The invention also ensures that the reset is only possible after the cause or malfunction for the circuit cut-off has been removed, and ensures the operational safety of the electric device.
Description
【Technical field】 [0001] The invention relates to an overload and overtemperature protection device for electrical appliances, in particular to a manual reset overload and overtemperature early warning protection device with overload and overtemperature early warning and manual reset protection. 【Background technique】 [0002] Various electrical appliances are used in people's lives. When using electrical equipment, people not only pay attention to the function of the equipment, but also pay more attention to the safety of the equipment. When the components or electronic circuits of electrical equipment fail, it will cause the equipment to heat up. When the temperature exceeds the normal value, it will cause equipment failure, thus affecting the normal use of the equipment. For this reason, general electrical appliances or electronic equipment are equipped with temperature switches or thermostats, so that when the temperature of the equipment exceeds the normal value, the p...
Claims
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IPC IPC(8): H02H5/04H02H3/04H02H3/02H01H71/50
CPCH01H37/52H01H71/50H02H5/04H02H3/04H02H3/02H02H5/047
Inventor 马永红张宗宁
Owner 东莞市楷亿电子科技有限公司