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Automatic electric leakage power-off device of washing machine

A technology of automatic power-off and washing machine, applied in the direction of automatic disconnection emergency protection device, circuit device, emergency protection circuit device, etc., can solve the problem that the washing machine cannot detect the leakage of electricity, and achieve the effect of preventing life safety from being threatened

Inactive Publication Date: 2015-03-18
XIAN KAIBEI NAITE INTELLIGENT ENG
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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 overcome the problem that the current washing machine cannot detect whether electric leakage occurs

Method used

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  • Automatic electric leakage power-off device of washing machine

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Effect test

Embodiment 1

[0010] a kind of like figure 1 The washing machine leakage automatic power-off device includes: a detection module, used to detect whether the washing machine has a leakage phenomenon that exceeds the safety of the human body, and outputs the signal to the AD conversion module; an AD conversion module, used to convert the output of the detection module The signal is digitized and output to the control module; a control module is used to receive the output signal of the AD conversion module, and then judge whether it is beyond the safety of the human body, and control the power on and off of the switch circuit module and the power on and off of the LED display light; a switch circuit module , used to switch the power circuit of the washing machine; a power circuit used to provide power to the detection module, the AD conversion module, the control module, and the switch circuit module.

[0011] The detection module of the leakage detection module of the washing machine has two...

Embodiment 2

[0013] The leakage automatic power-off device of the washing machine mentioned above belongs to the detection module, which is used to detect whether the current exceeds the safe current of the human body or whether the detection voltage exceeds the safe voltage of the human body. When detecting the electric voltage, it is 36V, and when detecting the current is 10mA; The secondary connected transformer circuit unit, rectifier circuit unit, filter circuit unit, voltage stabilizing circuit unit, and voltage stabilizing circuit unit are respectively connected to the detection module, AD conversion module, control module, and switch circuit module.

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Abstract

The invention belongs to the field of household electric appliances, and in particular relates to an automatic electric leakage power-off device. The automatic electric leakage power-off device comprises a detection module, an AD conversion module, a control module, a switch circuit module and a power supply circuit, wherein the detection module is used for detecting the electric leakage phenomenon of the washing machine and outputting a signal; the AD conversion module is used for digitalizing the output signal of the detection module and outputting a signal; the control module is used for receiving the output signal of the AD conversion module, then judging whether the leaked electric power exceeds the safety utilization of electric power for the human body and controlling the switch circuit module and an LED display lamp to be switched on and off; the switch circuit module is used for switching on and off the power supply circuit of the washing machine; the power supply circuit is used for providing power. By adopting the automatic electric leakage power-off device, whether the leaked power exceeding the safety utilization of electric power for the human body exists or not can be detected in the first time, the power supply of the washing machine can be immediately powered off once the leaked electric power exceeds the safety utilization of the electric power for the human body, and thus the life security of a user can be well prevented from being threatened by the electric leakage.

Description

technical field [0001] The invention belongs to the field of household appliances, and in particular relates to an automatic power-off device for washing machine leakage. Background technique [0002] With the development of science and technology, washing machines have become a very common household appliance; washing machines are prone to leakage as they are used for a long time. Once leakage occurs, it will greatly endanger the life safety of users. Existing washing machines are grounded through the three-point board to prevent leakage. However, the ground wires of many three-point boards are not grounded at all, or the ground wire is broken, which is difficult to find. The role of anti-leakage. Contents of the invention [0003] The purpose of the invention is to overcome the problem that the current washing machine cannot detect whether electric leakage occurs. [0004] For this reason, the present invention provides a washing machine leakage automatic power-of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/00
Inventor 刘继芳
Owner XIAN KAIBEI NAITE INTELLIGENT ENG
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