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Fixed-time automatic power off device

An automatic power-off and time relay technology, applied in circuits, relays, electrical components, etc., can solve the problem of disconnecting the power supply, and achieve the effect of prolonging the service life, compact and practical device, and energy saving.

Active Publication Date: 2012-10-03
XINXING DUCTILE IRON PIPES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a timing automatic power-off device to solve the technical problem that daily electrical appliances cannot automatically cut off the power supply after the specified working time

Method used

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Embodiment Construction

[0016] In the timing automatic power-off device of the present invention, the mechanical relay and the electronic relay are used in combination, the intermediate relay adopts the mechanical type, and the time relay adopts the electronic type, which can not only improve the delay accuracy, but also ensure the reliability.

[0017] The mechanical relay includes a second normally open contact KA1, which closes quickly when the relay is powered on, and opens quickly when the relay is powered off.

[0018] The electronic time relay includes the first normally open contact KT1 and the first normally closed contact KT2. When the relay is energized, the first normally open contact KT1 is quickly closed, and the first normally closed contact KT2 is quickly disconnected. When the relay is powered off At this time, the first normally open contact KT1 is opened with a delay, and the first normally closed contact KT2 is quickly closed.

[0019] In the timing automatic power-off device of t...

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Abstract

The invention discloses a fixed-time automatic power off device, relating to a control circuit. The fixed-time automatic power off device comprises an intermediate relay, a time relay, a linked switch and a connection switch, wherein a negative electrode at a power input end is connected with a negative electrode at a power output end, a positive electrode at the power input end is in series connection with a first normally-open contact of the time relay and a normally-closed contact of the linked switch and then is connected with a positive electrode at the power output end; the first normally-open contact of the time relay, the normally-closed contact of the linked switch and a normally-open contact of the linked switch are connected in parallel; a first normally-open contact of the time relay KT is connected with the connection switch in parallel; the positive electrode at the power input end is in series connection with the connection switch, then is in series connection with the first normally-closed contact, and then is connected with the negative electrode at the power output end; and the positive electrode at the power input end is in series connection with a second normally-open contact of the intermediate relay and the time relay and is then connected with the negative electrode at the power output end. According to the invention, energy wastes can be reduced effectively, and potential hazards of using electric appliances under an unmanned environment are reduced.

Description

technical field [0001] The invention relates to a circuit control device, in particular to a control device for automatic power-off. Background technique [0002] There are often daily electrical appliances in homes, offices, and public places that need to be used for a short time when no one is on duty. If the power supply cannot be disconnected in a timely manner, it will consume electricity for a long time and cause energy waste, such as humidifiers, water dispensers, and electric vehicle charging. Wait. Running the water dispenser for a long time not only wastes electric energy but also causes "thousands of boiling water" which is not good for health. Electric vehicles are generally charged in remote places such as garages or storage rooms downstairs. Unattended use will not only cause waste of electricity and shorten the service life of batteries , but also pose a safety hazard. Contents of the invention [0003] The purpose of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/00H01H47/18
Inventor 高广维董军刘娇
Owner XINXING DUCTILE IRON PIPES CO LTD
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