CN200950677Y - Electromagnetic furnace with high-frequency, intermediate frequency and low-frequency filter - Google Patents
Electromagnetic furnace with high-frequency, intermediate frequency and low-frequency filter Download PDFInfo
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- CN200950677Y CN200950677Y CN 200620005945 CN200620005945U CN200950677Y CN 200950677 Y CN200950677 Y CN 200950677Y CN 200620005945 CN200620005945 CN 200620005945 CN 200620005945 U CN200620005945 U CN 200620005945U CN 200950677 Y CN200950677 Y CN 200950677Y
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- frequency
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- electromagnetic oven
- frequency filter
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Abstract
The utility model discloses an electric stove with high frequency, intermediate frequency and low frequency. A high frequency filter (2) is arranged in series between an AC power supply (1) and an electric stove circuit (11), an intermediate filter and a low-frequency filter (4). The high frequency filter (2) comprises a dual winding magnetic ring induction coil (6) and filter capacitor (7); the low-frequency filter (4) comprises a dual winding magnetic ring induction coil (10) and a filter capacitor (9). The utility model is used to effectively control the interference of electrical current fluctuation to external electric appliance and radio when the electric stove is working, the device can also prevent the interference of electric network voltage pulse to the operation of the electric stove in order to make the operation of the electric stove more safe and reliable.
Description
Technical field
The utility model relates to electromagnetic oven, particularly a kind of electromagnetic oven with high frequency intermediate frequency low-frequency filter.
Background technology
Sell in the market electromagnetic oven, the alternating current that electrical network is carried is not directly imported the circuit of electromagnetic oven inside through filter, its shortcoming be when electromagnetic oven is worked near electric equipment and the radio wave of current fluctuation disturbing, the potential pulse of the alternating current of introducing from electrical network also disturbs electromagnetic oven simultaneously, influences the work of electromagnetic oven.Particularly the European Economic Community is stricter to electromagnetic oven EMC test at present, does not have the electromagnetic oven of filter to test by the EMC of the European Economic Community.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at above-mentioned electromagnetic oven, develop a kind of electromagnetic oven with high frequency intermediate frequency low-frequency filter, before alternating current enters electromagnetic oven circuit, increase by three groups of filters of high frequency intermediate frequency low frequency, prevent that effectively electromagnetic oven when work is to other electric equipments and wireless interference, simultaneously also prevent the interference of electrical network, make electromagnetic oven safer electromagnetic oven.
The purpose of this utility model is achieved in that
Between AC power and electromagnetic oven circuit, connect high frequency filter, intermediate-frequency filter and low-frequency filter.High frequency filter is made up of double winding magnet ring inductance coil and filter capacitor, and the inductance of double winding magnet ring inductance coil is 10 microhenrys-100 microhenrys, and the electric capacity of filter capacitor is 10 picofarads-200 picofarads; Intermediate-frequency filter is made up of double winding magnet ring inductance coil and filter capacitor, and the inductance of double winding magnet ring inductance coil is 0.5 milihenry-8 milihenry, and the electric capacity of filter capacitor is 470 picofarads-4700 picofarads; Low-frequency filter is made up of double winding magnet ring inductance coil and filter capacitor, and the inductance of double winding magnet ring inductance coil is 10 milihenries-150 milihenries, and the electric capacity of filter capacitor is 1 microfarad-47 microfarad.
Owing to adopt the utility model, current fluctuation electrical equipment and the wireless interference to external world when controlling electromagnetic oven work effectively simultaneously, also prevents the interference of line voltage pulse to electromagnetic oven work.
Description of drawings
Fig. 1 is the utility model circuit diagram.
Embodiment
In conjunction with Fig. 1 and embodiment, further describe structure of the present utility model.
Embodiment:
Series connection high frequency filter 2, intermediate-frequency filter 3 and low-frequency filter 4 between AC power 1 and electromagnetic oven circuit 11.High frequency filter 2 is made up of double winding magnet ring inductance coil 6 and filter capacitor 5, and the inductance of double winding magnet ring inductance coil 6 is 55 microhenrys, and the electric capacity of filter capacitor 5 is 110 picofarads; Intermediate-frequency filter 3 is made up of double winding magnet ring inductance coil 8 and filter capacitor 7, and the inductance of double winding magnet ring inductance coil 8 is 4 milihenries, and the electric capacity of filter capacitor 7 is 2500 picofarads; Low-frequency filter 4 is made up of double winding magnet ring inductance coil 10 and filter capacitor 9, and the inductance of double winding magnet ring inductance coil 10 is 80 milihenries, and the electric capacity of filter capacitor 9 is 25 microfarads.
Claims (7)
1, the electromagnetic oven of band high frequency intermediate frequency low-frequency filter is characterized in that: connect between AC power (1) and electromagnetic oven circuit (11) high frequency filter (2), intermediate-frequency filter (3) and low-frequency filter (4).
2, the electromagnetic oven of band high frequency intermediate frequency low-frequency filter according to claim 1 is characterized in that: high frequency filter (2) is made up of double winding magnet ring inductance coil (6) and filter capacitor (5).
3, the electromagnetic oven of band high frequency intermediate frequency low-frequency filter according to claim 1 is characterized in that: intermediate-frequency filter (3) is made up of double winding magnet ring inductance coil (8) and filter capacitor (7).
4, the electromagnetic oven of band high frequency intermediate frequency low-frequency filter according to claim 1 is characterized in that: low-frequency filter (4) is made up of double winding magnet ring inductance coil (10) and filter capacitor (9).
5, the electromagnetic oven of band high frequency intermediate frequency low-frequency filter according to claim 1, it is characterized in that: the inductance of the double winding magnet ring inductance coil (6) of high frequency filter (2) is 10 microhenrys-100 microhenrys, and the electric capacity of filter capacitor (5) is 10 picofarads-200 picofarads.
6, the electromagnetic oven of band high frequency intermediate frequency low-frequency filter according to claim 1, it is characterized in that: the inductance of the double winding magnet ring inductance coil (8) of intermediate-frequency filter (3) is 0.5 milihenry-8 milihenry, and the electric capacity of filter capacitor (7) is 470 picofarads-4700 picofarads.
7, the electromagnetic oven of band high frequency intermediate frequency low-frequency filter according to claim 1 is characterized in that: the inductance of the double winding magnet ring inductance coil (10) of low-frequency filter (4) is 10 milihenries-150 milihenries, and the electric capacity of filter capacitor (9) is 1 microfarad-47 microfarad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620005945 CN200950677Y (en) | 2006-02-13 | 2006-02-13 | Electromagnetic furnace with high-frequency, intermediate frequency and low-frequency filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620005945 CN200950677Y (en) | 2006-02-13 | 2006-02-13 | Electromagnetic furnace with high-frequency, intermediate frequency and low-frequency filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200950677Y true CN200950677Y (en) | 2007-09-19 |
Family
ID=38893219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620005945 Expired - Fee Related CN200950677Y (en) | 2006-02-13 | 2006-02-13 | Electromagnetic furnace with high-frequency, intermediate frequency and low-frequency filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200950677Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741091B (en) * | 2010-02-09 | 2013-01-02 | 广东格兰仕集团有限公司 | External filter device |
| CN103840446A (en) * | 2014-02-21 | 2014-06-04 | 国家电网公司 | Circuit used for communication device power source disturbance suppression in transformer substation |
-
2006
- 2006-02-13 CN CN 200620005945 patent/CN200950677Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741091B (en) * | 2010-02-09 | 2013-01-02 | 广东格兰仕集团有限公司 | External filter device |
| CN103840446A (en) * | 2014-02-21 | 2014-06-04 | 国家电网公司 | Circuit used for communication device power source disturbance suppression in transformer substation |
| CN103840446B (en) * | 2014-02-21 | 2017-01-25 | 国家电网公司 | Circuit used for communication device power source disturbance suppression in transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Guangdong town of Changping city of Dongguan province Tong Kok village along the Road Hexi 69 No. 70 Dongguan Hui Kitchen Digital Technology Co. Ltd., zip code: 560523 Patentee after: Deng Zhixiong Address before: Guangdong province Dongguan City Huangjiang Avenue Long Road No. 8 Dongguan Hui star kitchen Digital Technology Co., zip code: 523768 Patentee before: Deng Zhixiong |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 |