Household appliances and devices for reducing interference voltage
A technology for household appliances and interference voltage, applied to electrical components, magnetic field/electric field shielding, screening casings, etc., can solve the problem of high cost, achieve low cost, simple structure, and reduce the effect of interference voltage
Active Publication Date: 2020-04-17
QINGDAO HAIER WASHING MASCH CO LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This solution solves the interference voltage between the power supply and electronic products through the interference filter, but its cost is relatively high
Method used
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Embodiment 1
[0025] See Figure 1-4 , figure 1 It is a structural schematic diagram of a household appliance in a preferred embodiment of the present invention. figure 2 It is a top view of a circuit board of a household appliance according to a preferred embodiment of the present invention. image 3 for figure 2 Schematic diagram of section A-A in middle. Figure 4 for image 3 The enlarged schematic at B in the middle.
[0026] Such as Figure 1 to Figure 4 As shown, the present invention provides a household appliance including a circuit board, a circuit board box and a sheet metal, the circuit board box is made of insulating material, and is located between the circuit board and the sheet metal; wherein, the household appliance The electrical appliance also includes a metal plate, the metal plate is placed between the circuit board and the circuit board box or between the sheet metal and the circuit board box, the metal plate, the sheet metal, the circuit The boards are space...
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The invention provides a domestic appliance and an apparatus for reducing disturbance voltage. The domestic appliance comprises a circuit board, a circuit board box and a metal plate; the circuit board box is made from an insulating material, and positioned between the circuit board and the metal plate, wherein the domestic appliance also comprises a metal sheet; the metal sheet is arranged between the circuit board and the circuit board box, or between the metal plate and the circuit board box; and the metal sheet, the metal plate and the circuit board are spaced at preset distances mutually, and are not electrically contacted. The invention also provides a method for reducing disturbance voltage of the domestic appliance. According to the domestic appliance and the method for reducing disturbance voltage of the domestic appliance provided by the invention, the dielectric constant and stray capacitance can be effectively lowered so as to reduce the disturbance voltage; and in addition, the domestic appliance has the advantages of simple mounting structure, convenience, and economical and practical performance.
Description
technical field [0001] The invention relates to the field of household appliances, in particular to a device for reducing interference voltage in household appliances. Background technique [0002] In some household appliances, due to safety considerations and space constraints, the power board is generally placed on the inner wall of the household appliance box. Under this installation structure, there is a relatively large gap between the power board and the sheet metal used to fix the power board. The parasitic capacitance, the capacitance will generate interference voltage, the interference voltage has certain damage to the electrical appliances, greatly shortening the service life of the electrical appliances, so it is necessary to test the interference voltage of the electrical appliances. Sometimes in order to pass the test of interference voltage, it is necessary to use an interference suppressor, but the cost is relatively high, especially for high-power household a...
Claims
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IPC IPC(8): H05K9/00
CPCH05K9/0007
Inventor 姚龙平成荣锋杜兆斌
Owner QINGDAO HAIER WASHING MASCH CO LTD