CN101008499A - High efficiency low-temperature-rise induction cooker - Google Patents
High efficiency low-temperature-rise induction cooker Download PDFInfo
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- CN101008499A CN101008499A CN 200710026474 CN200710026474A CN101008499A CN 101008499 A CN101008499 A CN 101008499A CN 200710026474 CN200710026474 CN 200710026474 CN 200710026474 A CN200710026474 A CN 200710026474A CN 101008499 A CN101008499 A CN 101008499A
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- igbt
- electromagnetic oven
- reduce
- heater coil
- temperature rise
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Abstract
The invention relates to an electromagnetic furnace which can effectively reduce the power consumption at the start of IGBT and temperature increase, wherein, the upper side of heating coil is arranged with one or more magnetic bars via adhesive or support, therefore, when in use, the magnetic bar can increase the inductance and Q value of coil, improve the high-frequency working property, reduce the IGBT working frequency, reduce the IGBT switch power consumption, prolong the discharge time, reduce the IGBT start voltage, and reduce the IGBT temperature increase, while the magnetic bar will consume energy in magnetization, to release abundant energy of coil at high-voltage low-shift mode, and the temperature increase will be reduced. The invention has simple structure.
Description
Technical field:
The present invention relates to the electromagentic furnace technology field, refer in particular to a kind of electromagnetic oven that can effectively reduce efficient, the low temperature rise of IGBT turn-on consumption and temperature rise.
Background technology:
Electromagnetic oven is the heating equipment that the eddy current that utilizes electromagnetic induction principle to produce heats pan, because it does not have flame, is subjected to very much people's welcome.In use, the electronic component of electromagnetic oven inside all can generate heat as IGBT, bridge heap etc., particularly IGBT.Electromagnetic oven is when the high pressure low-power operation, and IGBT is not that no-voltage is open-minded, and the IGBT turning-on voltage is very high, and the IGBT turn-on consumption is big like this, and the IGBT temperature rise.And how to overcome the turn-on consumption of IGBT, and reducing temperature rise, energy savings then is the problem of industry concern.
Summary of the invention:
The object of the invention is to provide a kind of electromagnetic oven that can effectively reduce efficient, the low temperature rise of IGBT turn-on consumption and temperature rise, and it is simple in structure, and is practical.
For achieving the above object, electromagnetic oven of the present invention be on heating spool rest, to be that the upside of heater coil is additional have one or more magnetic stripe; Many additional magnetic stripes are arranged in parallel.
Described additional magnetic stripe face pastes the upper surface that is connected in heater coil.
Described additional magnetic stripe strides across the top of heater coil, and affixed by the winding bracket of fixture and heating spool rest.
The winding structure of described heater coil is for continuing tight coiling or dividing the central spacer coiling.
Adopt said structure, the present invention has following advantage: 1, be attached to sensibility reciprocal and Q value that magnetic stripe on the heater coil can increase drum, improve electromagnetic oven high-frequency work characteristic, reduce the IGBT operating frequency, reduce the IGBT switching loss, make the low-grade charging interval of drum high pressure short, discharge time is long, reduce the IGBT turning-on voltage, thereby reduce the IGBT turn-on consumption, the IGBT temperature rise reduces.2, magnetic stripe is wanted consumed energy in magnetic history, and when the low-grade work of high pressure, the energy unnecessary drum discharges with heat energy, and the IGBT dutycycle is big, so temperature rise is low.3, simple in structure, easy to process, practical.
Description of drawings:
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is additional magnetic stripe one connected mode schematic diagram;
Accompanying drawing 3 is additional another connected mode schematic diagram of magnetic stripe;
Accompanying drawing 4 is another winding mode schematic diagram of heater coil of the present invention.
The specific embodiment:
The present invention will be further described below in conjunction with accompanying drawing:
With reference to accompanying drawing 1～4, electromagnetic oven of the present invention, it comprises all accessories of electromagnetic oven, as body of heater, heating spool rest 1, circuit board and IGBT etc., heating spool rest 1 is installed in the body of heater, at heating spool rest 1 upside, to be that the upside of heater coil 11 is additional have one or more magnetic stripe 2, the winding structure of heater coil 11 can be to continue tight coiling or divide the central spacer coiling.
In use, be attached to the intrinsic magnetic field of magnetic stripe 2 self on the heater coil 11 and can increase the sensibility reciprocal and the Q value of heating spool rest 1, additional magnetic stripe 2 is with heater coil 11 and be arranged on the magnetic patch cooperating of the original radial design of electromagnetic oven at heater coil 11 back sides, magnetic field is strengthened, improve electromagnetic oven high-frequency work characteristic, reduce the IGBT operating frequency, reduce the IGBT switching loss, make the low-grade charging interval of heating spool rest 1 high pressure short, discharge time is long, reduce the IGBT turning-on voltage, thereby reduce the IGBT turn-on consumption, the IGBT temperature rise reduces.Simultaneously, additional magnetic stripe 2 is wanted consumed energy in magnetic history, when the low-grade work of high pressure, heating spool rest 1 unnecessary energy is discharged with heat energy, because the IGBT dutycycle is big, so temperature rise is low.
In the present embodiment, additional magnetic stripe 2 can paste the upper surface that is connected in heater coil 11 by face, be that magnetic stripe 2 directly is pasted on the heater coil 11, the length of magnetic stripe 2 can equal or be longer than or be shorter than the diameter of heater coil 11, magnetic stripe 2 length of optimal selection are suitable with the diameter of heater coil 11, can obtain better resultant field like this, and the heating eddy current of generation is fit to, thermal efficiency height, radiation is little.
Certainly, additional magnetic stripe 2 also can adopt the top that strides across heater coil 11, and affixed by the winding bracket 12 of fixture and heating spool rest 1, fastener that fixture can be general or embedding groove seat etc.This structure is easy to assembly, and security is good, can effectively prevent the situation of heater coil 11 short circuits, increases the service life.
The present invention can add one or more magnetic stripe 2, and additional many time, many additional magnetic stripes 2 are arranged in parallel, and the magnetic field of Chan Shenging is even like this, so that the pan heating surface is even, it is remarkable to add thermal effect.
The winding structure of heater coil 11 of the present invention can be and continues tight coiling or divide the central spacer coiling, continues tight coiling and can effectively reduce coil diameter, and divide central spacer coiling can enhancing radiating effect, obtains the heating of stereovision.
Claims (5)
1, the electromagnetic oven of efficient, low temperature rise comprises it is characterized in that all accessories of electromagnetic oven: at heating spool rest (1) upside of described electromagnetic oven, to be that the upside of heater coil (11) is additional have one or more magnetic stripe (2).
2, the electromagnetic oven of efficient, low temperature rise according to claim 1 is characterized in that: described additional magnetic stripe (2) face pastes the upper surface that is connected in heater coil (11).
3, the electromagnetic oven of efficient, low temperature rise according to claim 1, it is characterized in that: described additional magnetic stripe (2) strides across the top of heater coil (11), and affixed by the winding bracket (12) of fixture and heating spool rest (1).
4, according to the electromagnetic oven of any described efficient, low temperature rise in the claim 1～3, it is characterized in that: described many additional magnetic stripes (2) are arranged in parallel.
5, according to the electromagnetic oven of any described efficient, low temperature rise in the claim 1～3, it is characterized in that: the winding structure of described heater coil (11) is for continuing tight coiling or dividing the central spacer coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100264743A CN100510544C (en) | 2007-01-19 | 2007-01-19 | Electromagnetic cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100264743A CN100510544C (en) | 2007-01-19 | 2007-01-19 | Electromagnetic cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101008499A true CN101008499A (en) | 2007-08-01 |
| CN100510544C CN100510544C (en) | 2009-07-08 |
Family
ID=38697051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100264743A Expired - Fee Related CN100510544C (en) | 2007-01-19 | 2007-01-19 | Electromagnetic cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100510544C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838819A (en) * | 2017-11-24 | 2019-06-04 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic cooking appliance and its control method and control device |
-
2007
- 2007-01-19 CN CNB2007100264743A patent/CN100510544C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838819A (en) * | 2017-11-24 | 2019-06-04 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic cooking appliance and its control method and control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100510544C (en) | 2009-07-08 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20160119 |
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| EXPY | Termination of patent right or utility model |