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Load stack filter capable of suppressing radio frequency interference for domestic electric washing machine

A household electric washing machine and radio frequency interference technology, which is applied to electrical components, harmonic reduction devices, and AC networks to reduce harmonics/ripples, etc., can solve problems affecting production efficiency and cost, and insufficient product quality stability

Active Publication Date: 2005-12-07
JINLING ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these circuits are often not designed as standardized components that are easy to install, and need to be assembled during the manufacturing process of the whole machine, which affects production efficiency and cost, and the stability of product quality is insufficient.

Method used

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  • Load stack filter capable of suppressing radio frequency interference for domestic electric washing machine
  • Load stack filter capable of suppressing radio frequency interference for domestic electric washing machine

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Effect test

Embodiment Construction

[0016] The filter of the embodiment of the present invention and its connection circuit in the washing machine are as follows: figure 2 As shown, the filter 20 is attached to the wall and installed on a household electric washing machine, such as a metal shell 21 of a fully automatic pulsator washing machine controlled by a mechanical program controller. The casing of the filter 20 is made of metal material, and the casing also serves as the ground terminal E of the filter 20 . Since the metal casing of the washing machine of Class I electrical appliances is grounded, the ground terminal E of the filter 20 is reliably grounded through the metal casing 21 of the washing machine.

[0017] In addition to the ground terminal E, the other leads of the filter 20 are: the terminal L for connecting the phase line of the power supply of the washing machine, the terminal N for connecting the neutral line of the power supply of the washing machine, and the terminal N for connecting the ...

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PUM

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Abstract

A radio frequency interference inhibiting filter for domestic washing machine, which contains passive component and connected circuit, casing, leading terminal containing terminal L of phase line of power supply, terminal N for connecting zero line, terminal A1 for connecting input terminal of one winding of single phase motor, terminal A2 for connecting input terminal of another winding of motor, the passive component containing capacitors and resistors, said filter can effectively inhibit RF interference with low cost, easy use and stable quality.

Description

technical field [0001] The invention relates to a whole filter for suppressing radio frequency interference, in particular to a whole filter for suppressing radio frequency interference used in household electric washing machines. Background technique [0002] Home electric washing machines, like many electrical appliances, can generate harmful electromagnetic interference when in operation. In order to eliminate this electromagnetic interference in the prior art, most of the integrated filters for suppressing radio frequency interference are set in the washing machine. A common circuit for this filter and its connection in a washing machine is shown in figure 1 Shown: [0003] An inductor L1 is connected in series between the input terminal 1 and the output terminal 4 of the filter 10, an inductor L2 is connected in series between the input terminal 2 and the output terminal 5, and a resistor R3 and a capacitor C1 are connected in parallel between the terminals 1 and 2. ...

Claims

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Application Information

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IPC IPC(8): H02J3/01
CPCY02E40/40
Inventor 冯国强朱健昭
Owner JINLING ELECTRICAL CO LTD
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