Manually-reset overload overtemperature early-warning protection device
A protection device and manual reset technology, applied in the direction of automatically disconnected emergency protection device, emergency protection circuit device, circuit device, etc., can solve the problems of re-failure safety, automatic reset, no early warning function, etc., to ensure the safety of use Effect
Active Publication Date: 2013-02-13
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. Such as Figure 4 As shown, the input end of the temperature control unit 10 is connected to the power ...
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The invention relates to a manually-reset overload overtemperature early-warning protection device, which comprises a temperature control unit (10) for carrying out early-warning when a load is overtemperature, a manual poweroff resetting protection unit (20) for automatically powering off a load circuit when the load is overload and overtemperature, and a step-down rectification unit (30), wherein the input end and the output end of the temperature control unit (10) are respectively connected with an AC power supply and the step-down rectification unit (30), and the input end and the output end of the manual poweroff resetting protection unit (20) are respectively connected with the AC power supply and the load. The manually-reset overload overtemperature early-warning protection device has the capability of sending an early-warning signal when being overload and overtemperature so as to be overhauled in advance and eliminate fault points. Meanwhile, because manual resetting is needed, the manually-reset overload overtemperature early-warning protection device can ensure that reasons or fault points causing turnoff of a circuit are removed, and then resetting can be realized; and due to adoption of dual protection, the manually-reset overload overtemperature early-warning protection device can effectively ensure the using safety of power utilization equipment.
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
CPCH01H37/52H02H5/047
Inventor 马永红张宗宁
Owner 东莞市楷亿电子科技有限公司