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Power supply switchover device of domestic electrical equipment

A technology of power switching and switching devices, applied in relays, circuits, electrical components, etc., can solve the problems of power consumption, energy waste, standby power consumption, etc., and achieve the effect of zero standby power consumption

Active Publication Date: 2009-07-01
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current control device of household appliances, the state of the switching device SW1 is scanned by the single-chip microcomputer, but because the single-chip microcomputer can only sense whether the switching device is pressed when it is charged and in the working state, there is still a standby function when the household appliance is not working. Consumption, a large amount of power consumption, resulting in a serious waste of energy

Method used

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  • Power supply switchover device of domestic electrical equipment
  • Power supply switchover device of domestic electrical equipment
  • Power supply switchover device of domestic electrical equipment

Examples

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no. 1 example

[0037] Embodiment 1: In this embodiment, the switching device is an elastic switch, which serves as a power button for starting and shutting down the washing machine, and the controlled device is a DC relay.

[0038] image 3 It is a schematic diagram of the power switching device of the washing machine. K1 is a relay, T1 is a transformer, L is the live wire of the plug, N is the neutral wire of the plug, SW1 is a power button switch, one end of SW1 is connected to the live wire L of the plug, and the other end is connected to the coil of the relay K1; the transformer T1 and The rectifying device composed of rectifying diodes D1, D2, D3, and D4 and the voltage stabilizing device W1 form a power circuit, which supplies power for the power supply VDD of the single-chip MCU, the relay power supply VCC and the load. In order to enable the signal input terminal INI of the single-chip MCU to detect the state of SW1, connect the spring of the elastic switch SW1 to the signal input t...

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Abstract

The invention provides a power switching device for a household appliance, the household appliance includes a power plug and a power circuit connected to the power plug, a controlled device is connected between the live wire of the power plug and the input end of the power circuit; A switching device is connected between the live wire of the controlled device and the controlled device; and a control device is connected between the controlled device and the input end of the power circuit; the switching device passes through the controlled device and the The control device and the input end of the power circuit form a first branch; the controlled device and the input end of the power circuit form a second branch; when the switching device connects the first branch, the The control device controls the controlled device to connect the second branch, and the switching device cuts off the first branch; then the control device controls the controlled device by detecting the voltage of the switching device on and off. The invention realizes zero standby power consumption when the household appliances are not working.

Description

technical field [0001] The invention relates to a household appliance with an electric control board, in particular to a power switching device for the household appliance with an electric control board. Background technique [0002] Household appliances existing on the market generally have an electric control board. When the power plug is inserted into a charged socket, the electric control board is charged, and then the working state of the household appliance is controlled by the power switching device of the household appliance. figure 1 It is a circuit diagram of a power switching device for a household appliance with an electric control board. Including the live wire L of the power plug, the neutral wire N, the power circuit and the power switching device; the power circuit is composed of a transformer T1, a rectifying device composed of rectifying diodes D1, D2, D3, D4, and a voltage stabilizing device W1; the power switching device Including switching device SW1 an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H47/32H03K17/60
Inventor 李志罡孙奇辉李莉朱旬
Owner HAIER GRP CORP
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