CN102427625B - Power choking coil and electromagnetic induction heater adopting same - Google Patents
Power choking coil and electromagnetic induction heater adopting same Download PDFInfo
- Publication number
- CN102427625B CN102427625B CN201110279172.3A CN201110279172A CN102427625B CN 102427625 B CN102427625 B CN 102427625B CN 201110279172 A CN201110279172 A CN 201110279172A CN 102427625 B CN102427625 B CN 102427625B
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- power
- coil
- winding
- electromagnetic induction
- annular magnetizer
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- 230000005674 electromagnetic induction Effects 0.000 title claims description 14
- 238000004804 winding Methods 0.000 claims abstract description 23
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001939 inductive effect Effects 0.000 abstract 3
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- General Induction Heating (AREA)
Abstract
The invention relates to an electromagnetic inductive heating device, including a parallel coil panel L1 and a resonant capacitor C1, characterized in that a power choking coil is serially connected between the oil panel L1 and the resonant capacitor C1, the power choking coil includes an annular magnetizer and a coil winding encircled on the annular magnetizer, the outer surface of the annular magnetizer is coated with an insulating layer, the coil winding is formed by twisting more than three strands of varnished wires, and switching devices are respectively connected onto the two ends of the power choking coil. Compared with the prior art, the invention has the following beneficial effects that: since the electromagnetic inductive heating device is additionally provided with the power choking coil on the front end of the coil panel, when low-power heating is required, the power chocking coil is connected into the circuit through the switching devices, the existing resonance state is changed, zero-voltage switch of an IGBT (Insulated Gate Bipolar Transistor) is realized, the heat loss of the IGBT is small, and the system is safe, therefore, not only is the low-power continuous heating realized, but also the heating effect of the electromagnetic inductive heating device is better.
Description
Technical field
The present invention relates to the electromagnetic induction heater of a kind of power choking-winding and this power choking-winding of employing, belong to the improvement opportunity of electromagnetic oven product.
Background technology
At present, existing 2000W electromagnetic oven, due to the restriction of single tube resonant topology, can accomplish that the minimum power of continuous low power continuous heating is about 1000W, when power is lower than 1000W, IGBT produces comparatively serious thermal losses because turning-on voltage is higher, and more low-heat loss is more serious for power, heating effect non-constant during as adopted the mode of intermittent heat.
Summary of the invention
The object of the invention is to consider the problems referred to above and provide one to heat by continuous low power, the electromagnetic induction heater that heating effect is good.
Technical scheme of the present invention is: a kind of electromagnetic induction heater, comprise coil panel L1 in parallel and resonant capacitance C1, power choking-winding is also serially connected with between wherein said coil panel L1 and resonant capacitance C1, described power choking-winding comprises annular magnetizer and is looped around the coil windings on annular magnetizer, annular magnetizer outer surface has insulating barrier, described coil windings forms by more than three strands enamelled wires are stranded, and the two ends of described poower flow coil are connected with switching device S1.
Described switching device S1 is single-pole single-throw(SPST type relay or SPDT relay.
It has following beneficial effect compared with prior art in the present invention: electromagnetic induction heater is by increasing power choking-winding of the present invention in coil panel front end, when needs low-power heats, power choking-winding is by switching device place in circuit, change existing resonance condition, the no-voltage achieving IGBT is open-minded, and IGBT thermal losses is little, system safety, therefore, the present invention not only achieves lower powered laser heating, and electromagnetic induction heater heating effect can be made better.
Accompanying drawing explanation
Fig. 1 is the structural representation of power choking-winding of the present invention.
Fig. 2 is the enamelled wire area of beam schematic diagram of coiling winding of the present invention.
Fig. 3 is the system block diagram of electromagnetic induction heater of the present invention.
Fig. 4 is the circuit theory diagrams of the embodiment of the present invention 1 electromagnetic induction heater.
Fig. 5 is the circuit theory diagrams of the embodiment of the present invention 2 electromagnetic induction heater.
Fig. 6 is the structural representation of the embodiment of the present invention 3 electromagnetic induction heater annular magnetizer.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the specific embodiment of the present invention is described in further detail.
embodiment 1:
As shown in Figure 1 and Figure 2, the present embodiment power choking-winding L2, comprise annular magnetizer 1 and be looped around the coil windings 2 on annular magnetizer, annular magnetizer outer surface has insulating barrier, and described coil windings 2 forms by more than three strands enamelled wires 21 are stranded.
Described enamelled wire 21 diameter is less than 0.6 millimeter.Described annular magnetizer 1 is made up of ferrite material.Described annular magnetizer is closed ring body.
As shown in Figure 3, Figure 4, the present embodiment also discloses a kind of electromagnetic induction heater, comprise coil panel L1, resonant capacitance C1 in parallel, be also serially connected with described power choking-winding L2 between described coil panel L1 and resonant capacitance C1, described power choking-winding L2 two ends are connected with switching device S1.
In the present embodiment, described switching device S1 is single-pole single-throw(SPST type relay.
Embodiment 2:
As shown in Figure 5, the difference of the present embodiment and embodiment 1 is, described switching device S1 is SPDT relay.Other structure is identical with embodiment 1.
Embodiment 3
As shown in Figure 6, the difference of the present embodiment and embodiment 1 is, described annular magnetizer is made up of silicon steel material, in separatedly have 3mm gap.
Claims (2)
1. an electromagnetic induction heater, comprise coil panel (L1) in parallel and resonant capacitance (C1), characterized by further comprising power choking-winding, described power choking-winding is connected with coil panel (L1), this series arm is in parallel with described resonant capacitance (C1), described power choking-winding comprises annular magnetizer (1) and is looped around the coil windings (2) on annular magnetizer (1), annular magnetizer (1) outer surface has insulating barrier, described coil windings (2) forms by more than three strands enamelled wires (21) are stranded, the two ends of described power choking-winding are connected with switching device (S1).
2. electromagnetic induction heater according to claim 1, is characterised in that described switching device (S1) is for single-pole single-throw(SPST type relay or SPDT relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279172.3A CN102427625B (en) | 2011-09-20 | 2011-09-20 | Power choking coil and electromagnetic induction heater adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279172.3A CN102427625B (en) | 2011-09-20 | 2011-09-20 | Power choking coil and electromagnetic induction heater adopting same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102427625A CN102427625A (en) | 2012-04-25 |
| CN102427625B true CN102427625B (en) | 2015-07-15 |
Family
ID=45961554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110279172.3A Active CN102427625B (en) | 2011-09-20 | 2011-09-20 | Power choking coil and electromagnetic induction heater adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102427625B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737812A (en) * | 2012-07-25 | 2012-10-17 | 昆山达功电子有限公司 | High-power high-current choking winding |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2505959Y (en) * | 2001-06-18 | 2002-08-14 | 赵强 | Functional material composite structure magnetic core |
| CN2788431Y (en) * | 2004-12-06 | 2006-06-14 | 王金承 | Vehicle and vessel protecting breaker |
| CN101707818A (en) * | 2008-12-22 | 2010-05-12 | 王伟 | High-frequency induction heating device for thermally-drawing roller, heat-conducting disc or drying drum |
| CN101996745A (en) * | 2009-08-27 | 2011-03-30 | 成都深蓝高新技术发展有限公司 | Transformer with magnetic iron wire and conductive aluminum wire |
| CN202261885U (en) * | 2011-09-20 | 2012-05-30 | 美的集团有限公司 | Power choke coil and electromagnetic induction heating device using the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09229459A (en) * | 1996-02-22 | 1997-09-05 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP3824509B2 (en) * | 2001-08-20 | 2006-09-20 | 第一高周波工業株式会社 | Continuous induction heating device |
| JP3937918B2 (en) * | 2002-05-20 | 2007-06-27 | 松下電器産業株式会社 | Induction heating apparatus, induction heating cooker and rice cooker using the same |
| CN200986841Y (en) * | 2006-12-22 | 2007-12-05 | 联振电子(深圳)有限公司 | Choke coil |
-
2011
- 2011-09-20 CN CN201110279172.3A patent/CN102427625B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2505959Y (en) * | 2001-06-18 | 2002-08-14 | 赵强 | Functional material composite structure magnetic core |
| CN2788431Y (en) * | 2004-12-06 | 2006-06-14 | 王金承 | Vehicle and vessel protecting breaker |
| CN101707818A (en) * | 2008-12-22 | 2010-05-12 | 王伟 | High-frequency induction heating device for thermally-drawing roller, heat-conducting disc or drying drum |
| CN101996745A (en) * | 2009-08-27 | 2011-03-30 | 成都深蓝高新技术发展有限公司 | Transformer with magnetic iron wire and conductive aluminum wire |
| CN202261885U (en) * | 2011-09-20 | 2012-05-30 | 美的集团有限公司 | Power choke coil and electromagnetic induction heating device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102427625A (en) | 2012-04-25 |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Applicant after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Applicant before: Midea Group |
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Free format text: CORRECT: APPLICANT; FROM: MEIDI GROUP CO. LTD. TO: MIDEA GROUP CO., LTD. |
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| GR01 | Patent grant |