CN201281387Y - Heating coil shorting protection structure for electromagnetic oven - Google Patents
Heating coil shorting protection structure for electromagnetic oven Download PDFInfo
- Publication number
- CN201281387Y CN201281387Y CNU2008202011053U CN200820201105U CN201281387Y CN 201281387 Y CN201281387 Y CN 201281387Y CN U2008202011053 U CNU2008202011053 U CN U2008202011053U CN 200820201105 U CN200820201105 U CN 200820201105U CN 201281387 Y CN201281387 Y CN 201281387Y
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- CN
- China
- Prior art keywords
- conducting strip
- heating coil
- protection structure
- heater coil
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Induction Heating Cooking Devices (AREA)
Abstract
The utility model relates to the technical field of an induction cooker, in particular relates to a short-circuit protection structure of the induction cooker heating coil, comprising a heating coil which is entwined on the front side of an insulating plate; the back side of the insulating plate is provided with a plurality of emitting magnetic blocks; the magnetic blocks are separated from each other, and the interval area between the magnetic blocks is provided with a heat conducting strip which is bonded at the bottom surface of the heating coil and radially covers the heating coil; one or a plurality of temperature sensors are contacted with the heat conducting strip and the temperature sensor is electrically connected with a control circuit of the induction cooker. The protection structure provided in the utility model enlarges the control area of the point temperature sensing and achieves the effect of point controlling plane by embedding the heat conducting strip, meanwhile, the protection structure can rapidly and accurately measure the temperature of the heating coil and effectively switch on/off the power supply of the coil by matching with the control circuit and fully prevent the coil from being burnt owing to overheating.
Description
Technical field:
The utility model relates to the electromagentic furnace technology field, refers in particular to electromagnetic oven heating coil short circuit protection structure.
Background technology:
When local short circuit appearred in the electromagnetic oven heating coil, the local coil temperature sharply rose, so that it is inhomogeneous electromagnetic oven heating to occur, even caused heater coil overheated and damage.In the prior art, for said circumstances, generally adopt the point type temperature-sensitive to control, but when implementing, because the sensing region of point type temperature-sensitive is little, general two or three astragal of just controlling its orientation, place, and the heater coil of electromagnetic oven is from the inner ring to the outer ring, it radially strides bigger, the point type temperature-sensitive is difficult to control the whole winding dish, have deficiency in the use, and in case the coil that short circuit occurs not in point type temperature-sensitive control area, then can cause unpredicted consequence.
Summary of the invention:
It is a kind of simple in structure that the purpose of this utility model is to provide, and can realize the short circuit protection structure of large tracts of land sensing heater coil temperature rise.
For achieving the above object, the utility model adopts following technical scheme:
Electromagnetic oven heating coil short circuit protection structure, comprise heater coil, this heater coil disc is around on the insulation board front, be provided with some emitting shape magnetic blocks in the back side of insulation board, the magnetic block space, interval region in magnetic block is provided with conducting strip, and conducting strip is attached to the bottom surface of heater coil, and radially covers heater coil; One or more temperature detectors and conducting strip touch, and temperature detector electrically connects the control circuit of electromagnetic oven.
Conducting strip is the non-metal plate of sheet metal or heat conduction, and it is embedded between heater coil and insulation board, and promptly conducting strip is located between heater coil and the insulation board.
Temperature detector is a thermistor, and thermistor is attached on the conducting strip respective face, or is embedded in conducting strip.
The protection structure that the utility model provides; by embedding conducting strip; thereby enlarge the control area of point type temperature-sensitive; the effect of the point control face of reaching; and can measure the heater coil temperature quickly and accurately; and the power supply of the effective break-make coil of cooperation control circuit, the general protection coil can not burn out because of overheated.
Description of drawings:
Accompanying drawing 1 is the utility model front schematic view;
Accompanying drawing 2 is the utility model back side schematic perspective view;
Accompanying drawing 3 is the three-dimensional decomposition texture schematic diagram of the utility model;
Accompanying drawing 4 is the utility model combining structure schematic diagram.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is further specified:
Consult shown in Fig. 1～4, electromagnetic oven heating coil short circuit protection structure described in the utility model, comprise heater coil 10, this heater coil 10 coils on insulation board 20 fronts, is provided with some emitting shape magnetic blocks 30, magnetic block 30 spaces in the back side of insulation board 20, interval region in magnetic block 30 is provided with conducting strip 40, conducting strip 40 is attached to the bottom surface of heater coil 10, and radially covers heater coil, conducting strip 40 directly and heater coil 10 touch; One or more temperature detectors 50 touch with conducting strip 40, and temperature detector 50 electrically connects the control circuit of electromagnetic oven, and control circuit is a prior art, can receive the temperature signal that temperature detector 50 sends, and make response, reach the on/off of control heater coil 10 with this.
In the present embodiment, conducting strip 40 is the non-metal plate of sheet metal or heat conduction, and it is embedded between heater coil 10 and insulation board 20, and promptly conducting strip 40 is located between heater coil 10 and the insulation board 20.When conducting strip 40 is thin, can directly be attached to heater coil 10 bottom surfaces; If it is ccontaining for conducting strip 40 suitably to offer tank when thicker on insulation board 20, but will guarantee that conducting strip 40 touches heater coil 10.Conducting strip 40 can be established one or more pieces, and temperature detector 50 is a thermistor, and thermistor is attached on conducting strip 40 respective face, also can be to be embedded in conducting strip 40, when being the heat conducting film form, in thermistor can being wrapped in as conducting strip 40, heat conduction is better, and it is more accurate to detect.For the position that temperature detector 50 is installed, insulation board 20 suitably leaves the room, as offers breach or groove etc.; For thicker conducting strip 40, as sheet metal, smooth on the insulation board 20, stable for guaranteeing that heater coil 10 is coiled in, but conducting strip 40 part depressions are in insulation board 20, it is too high to make the upper surface of conducting strip 40 be unlikely to protruding dew, and at this moment insulation board 20 correspondences to be provided with tank ccontaining for conducting strip 40.
Design concept of the present utility model is by conducting strip 40 spreadability contact heater coil 10 radially; cooperate temperature detector 50; reach the temperature rise situation of the whole heater coil 10 of complete detection; cause local temperature rise in case any part short circuit occurs; the utility model is timely sensing all; and cooperate control circuit to control, and reach the protection effect, prevent that electromagnetic heating coil from damaging because of overheated.
Claims (3)
1, electromagnetic oven heating coil short circuit protection structure, comprise heater coil (10), this heater coil disc is around on insulation board (20) front, be provided with some emitting shape magnetic blocks (30) in the back side of insulation board (20), magnetic block (30) space, it is characterized in that: the interval region in magnetic block (30) is provided with conducting strip (40), and conducting strip (40) is attached to the bottom surface of heater coil (10), and radially covers heater coil; One or more temperature detectors (50) touch with conducting strip (40), and temperature detector (50) electrically connects the control circuit of electromagnetic oven.
2, electromagnetic oven heating coil short circuit protection structure according to claim 1; it is characterized in that: conducting strip (40) is the non-metal plate of sheet metal or heat conduction; it is embedded between heater coil (10) and insulation board (20), and promptly conducting strip (40) is located between heater coil (10) and the insulation board (20).
3, electromagnetic oven heating coil short circuit protection structure according to claim 1, it is characterized in that: temperature detector (50) is a thermistor, and thermistor is attached on conducting strip (40) respective face, or is embedded in conducting strip (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202011053U CN201281387Y (en) | 2008-09-22 | 2008-09-22 | Heating coil shorting protection structure for electromagnetic oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202011053U CN201281387Y (en) | 2008-09-22 | 2008-09-22 | Heating coil shorting protection structure for electromagnetic oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201281387Y true CN201281387Y (en) | 2009-07-29 |
Family
ID=40928261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202011053U Expired - Fee Related CN201281387Y (en) | 2008-09-22 | 2008-09-22 | Heating coil shorting protection structure for electromagnetic oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201281387Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016077989A1 (en) * | 2014-11-18 | 2016-05-26 | 魏晓敏 | Induction cooker and heating coil plate thereof |
-
2008
- 2008-09-22 CN CNU2008202011053U patent/CN201281387Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016077989A1 (en) * | 2014-11-18 | 2016-05-26 | 魏晓敏 | Induction cooker and heating coil plate thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20130922 |