Unlock instant, AI-driven research and patent intelligence for your innovation.

Electromagnetic heating system and household electrical appliance

A heating system and electromagnetic technology, applied in electric/magnetic/electromagnetic heating, ohmic resistance heating, induction heating, etc., can solve the problem that the filtering effect of EMC filter circuit cannot be satisfied.

Pending Publication Date: 2018-05-25
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the EMC filter circuit designed for the EMC test regulations of old home appliances can no longer meet the requirements of the EMC test regulations compared with the filtering effect of home appliances.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electromagnetic heating system and household electrical appliance
  • Electromagnetic heating system and household electrical appliance
  • Electromagnetic heating system and household electrical appliance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0050] According to one embodiment of the present invention, the resistive element is a resistor.

[0051] According to an embodiment of the present invention, the switch may be one of an IGBT, a triode, or a field effect transistor.

[0052] Figures 4B-4E In the shown embodiment, the switches driven by the switch driving circuit adopt IGBTs. The driving voltage output terminal Ud is input to the gate of the control IGBT to control the IGBT on or off. In the above solution, R1, R2, and R3 are set to optimize the circuit and improve the electromagnetic compatibility of the circuit. R3 is used to adjust the turn-off speed of the IGBT. The larger the resistance value, the slower the turn-off speed of the IGBT, and the better the effect of improving EMC. When R3 is less than 30 ohms, the improvement effect on EMC is not obvious; if it is greater than 100 ohms, the turn-off loss of IGBT will be very large, which will easily cause IGBT temperature to be too high. Therefore, the s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an electromagnetic heating system and a household electrical appliance, and belongs to the technical field of electronic circuits. The electromagnetic heating system comprises acoil disc, a control circuit and a power supply circuit, the coil disc comprises inner-ring terminals and outer-ring terminals, and the power supply circuit comprises a filter; the inner-ring terminals of the coil disc are connected to the control circuit; and the outer-ring terminals of the coil disc are connected to the filter. Thus, jittering of ground wire signals of an electromagnetic heating circuit can be reduced simply with low cost, interference in the power grid and other circuits in the power grid is reduced, and the electromagnetic compatibility of the circuit is improved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility, in particular to an electromagnetic heating system and a household appliance. Background technique [0002] The electrical equipment is connected to the power grid through the power line, and the interference signal generated by the electrical equipment itself can be transmitted to the power grid through the power line, posing a hazard to other equipment on the network. To this end, the EMC (Electro Magnetic Compatibility) test regulations for home appliances have been formulated to specify the frequency range of conduction tests to ensure that electrical equipment connected to the power grid will not cause signal pollution to the power grid. EMC includes two requirements: one is that the electromagnetic interference generated by the equipment during normal operation cannot exceed a certain limit; the other is that the appliance has a certain degree of immunity to electromag...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/06H05B6/36H05B6/12
CPCH05B6/06H05B6/062H05B6/12H05B6/129H05B6/36H05B2206/02Y02B40/00
Inventor 卢伟杰汪钊宣龙健
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD