CN2834086Y - Electromagnetic leakage prevention structure for electromagnetic oven - Google Patents
Electromagnetic leakage prevention structure for electromagnetic oven Download PDFInfo
- Publication number
- CN2834086Y CN2834086Y CN 200520063672 CN200520063672U CN2834086Y CN 2834086 Y CN2834086 Y CN 2834086Y CN 200520063672 CN200520063672 CN 200520063672 CN 200520063672 U CN200520063672 U CN 200520063672U CN 2834086 Y CN2834086 Y CN 2834086Y
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- China
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- electromagnetic
- electromagnetic oven
- switch
- portable stanchion
- leakage structure
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Abstract
The utility model provides an electromagnetic leakage prevention structure from the upper part of an electromagnetic oven, which comprises an oven surface panel of an electromagnetic oven and a cooker, wherein the oven surface panel is provided with a through hole; a corresponding position which passes through the through hole is provided with a movable support pole of elastic support; the lower part of the movable support pole is also provided with a switch; the movable support pole of elastic support can match with the putting down and the lifting of the cooker to move up and down to control the switching of a switch contact point under the elastic action and the support of an elastic body; output pins of the switch can be connected with a control circuit by an inner conducting wire. The utility model can attenuate radiation intensity to an outside space magnetic field caused by an electromagnetic oven without placing the cooker, and the absorption of the cooker to magnetic force lines can be enhanced simultaneously. An electromagnetic oven is more easy to pass through the Euramerican test requirement of EMC and FCC.
Description
Technical field:
Utilize the anti-electromagnetic leakage structure of using on domestic type kitchen electric device technical field, especially the electromagnetic oven utensil of electromagnetism heating principle under the utility model.
Background technology
At present, known electromagnetic oven is to utilize electromagnetic induction to produce the principle that eddy current makes the cooking pot tool self-heating, then can not produce electromagnetic leakage with avoiding, particularly existing electromagnetic oven starts electromagnetic oven or use when not putting pan, the process middle-end of cooking plays electromagnetic oven, this moment, the inspection pot circuit of electromagnetic oven inside can make power coil produce a discontinuous moment alternating electromagnetic field in order to judge whether electromagnetic oven top is placed with pan, if do not place pan, this discontinuous moment alternating electromagnetic field can continue to be about 1 minute time, really do not have pot after 1 minute and put down, electromagnetic oven just can change the standby program over to.This batch (-type) transient magnetic field when electromagnetic oven is not put pan the magnetic line of force not in pan bottom closure direct radiation to the space.The electromagnetic space that our use has not only been polluted in this electromagnetic radiation that leaks makes electromagnetic oven itself be difficult for also may causing the harm to human body simultaneously by the EMC electromagnetic compatibility test.
Summary of the invention:
In order to overcome the electromagnetic field radiation important disadvantages that existing electromagnetic oven leaks, the utility model provides a kind of novel solution, can prevent the electromagnetic radiation leakage that produces from the electromagnetic oven top effectively.
The technical scheme that its technical problem that solves the utility model adopts is: have through hole on electromagnetic oven boiler face panel, the portable stanchion of a resiliency supported is installed on suitable support at the correspondence position of through hole, in the portable stanchion bottom or sidepiece the switch with on-off function is installed, the portable stanchion of resiliency supported is subjected to the downward compresses elastomeric of pan base pressure and moves down when pan puts down, but trigger switch action when portable stanchion moves downward certain stroke, the output pin of switch is connected to control circuit by internal wiring.The portable stanchion of resiliency supported can be that the conductivity good metal is made and is provided with ground lead in position with on the ground wire that is connected to power supply.
Operation principle of the present utility model is: the portable stanchion of resiliency supported does not move down when putting pan, then the switch contact of switch is failure to actuate, control circuit detects switch and does not move, then do not send the exploratory pulse of inspection pot and maybe the IGBT examination control property pulse that sends is shorted to ground to IGBT, not conducting of IGBT coil panel no current flows through the transient magnetic field that just can not produce interruption and causes electromagnetism magnetic force wire spoke to penetrate.When pan puts down, the portable stanchion of resiliency supported is subjected to the downward compresses elastomeric of pan base pressure and moves down, when moving down into certain stroke, portable stanchion can cause the switch motion contact to disconnect or closure, control circuit detects the IGBT conducting pulse of just sending IGBT conducting pulse or transmission after switch contact moves and could arrive the IGBT control utmost point at this moment, electromagnetic oven just has pot to put down by normal inspection pot program detection pan really with further judgement and the pan material correctly just begins to enter normal electromagnetism heating schedule, serious magnetic field exposure can not caused because of there being pan to put down magnetic line of force formation closed-loop path in the magnetic field that this stage produces, simultaneously because portable stanchion adopts the good material of electric conductivity to make and be connected on the power ground line, the portable stanchion of resiliency supported can closely contact a pot body when pan put down, be equivalent to the reliable ground of pan own, thereby the induced current that pan itself is produced because of action of alternating magnetic field forms the loop with ground and is released the absorption of increase pan to the magnetic line of force, has also avoided pan to penetrate the magnetic field intensity that the source width of cloth is mapped to the space as the width of cloth under 20～40KHz alternating magnetic field.
The beneficial effects of the utility model are: weaken the magnetic field radiation intensity of electromagnetic oven because of the space to external world of not putting pan and causing greatly, strengthened the absorption of pan to the magnetic line of force simultaneously, make electromagnetic oven easier in American-European EMC, FCC test request.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is further specified.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model embodiment 1 structural representation profile;
Fig. 2 is embodiment 2 structural representation profiles.
Embodiment:
Embodiment 1 explanation:
See shown in the accompanying drawing 1, have through hole at electromagnetic oven boiler face panel 2 cores or other appropriate location in this example, at corresponding through hole position portable stanchion 8 is housed, portable stanchion 8 bottoms are provided with spring 10, portable stanchion 8 and spring 10 are supported on coil bracket 4 grooves, coil bracket 4 is supported the bottom that is positioned at boiler face panel 2 by coil panel pillar 6, switch 7 is installed in the appropriate location of portable stanchion 8 bottoms, but portable stanchion 8 moves downward trigger switch 7 actions, waterproof grommet 9 make circular by resistant to elevated temperatures silica gel material or other similar materials and be installed in coil bracket 4 or support 11 top moulding steps on form contact pressure with boiler face panel 2 and play sealing function, support 11 be designed to the pipeline configuration bottom when having water that opening may overflow to be guided to the electromagnetic oven outside to play spilling water water can not flow to electric component or electromagnetic oven inside, this support 11 can be with coil bracket 4 plastic mould single injection-moldeds be one, also can be an independent part.Portable stanchion 8 is to be made by aluminum or other conductivity good metal materials also to be provided with in position on the ground wire that ground lead is connected to power supply.Switch 7 passes the perforate of loosing core of support 11 sidewalls by inner lead and is connected to control circuit, available in case of necessity this side opening of silica gel sealing.Inner lead uses has water-proof function and resistant to elevated temperatures multiple diminishing line or silica gel line.Support 11 or electromagnetic oven body 1 base bottom opening place also are provided with latticed perforate simultaneously, in case foreign matter enters.It can be to be connected in parallel between the control utmost point and ground of IGBT (when pan does not put down switch 7 closures that switch 7 is connected to control circuit, to try control property control impuls is shorted to ground or directly drags down IGBT control utmost point level and make its not conducting, when putting down switch 7, pan disconnects, control impuls can normally arrive IGBT), also can be the control circuit that is connected to other, as I/O mouth of single-chip microcomputer etc.
Embodiment 2 explanations:
See shown in the accompanying drawing 2, have through hole at electromagnetic oven boiler face panel 2 cores or other appropriate location in this example, at corresponding through hole position temperature sensor housing 8 is housed, temperature sensor housing 8 top inner surface are equipped with temperature-sensing element, the temperature sensor lower housing portion is provided with spring 10, temperature sensor housing 8 and spring 10 are supported on coil bracket 4 or support 9 grooves, temperature sensor housing 8 also is extended with push rod 5 downwards, push rod 5 bottoms are equipped with sensitive switch 7, when putting down, pan 3 can cause push rod 5 to trigger sensitive switch 7 actions when temperature detector housing 8 moves downward certain stroke, temperature sensor housing 8 is to become housing by metallic material of aluminum or the good similar material drawing and forming of other conductivity, is provided with ground lead in the appropriate location of temperature sensor housing 8 or push rod 5 and is connected on the earth connection of power supply.
Claims (7)
1. anti-electromagnetic leakage structure that electromagnetic oven is used, comprise electromagnetic oven boiler face panel (2), pan (3), it is characterized in that: have through hole on the described boiler face panel (2), the portable stanchion (8) of resiliency supported is housed at the corresponding position by through hole, portable stanchion (8) bottom or sidepiece also are provided with switch (7), the portable stanchion of resiliency supported (8) can cooperate pan to put down and lift under elastomeric support and elastic reaction and move up and down the break-make of control switch (7) contact, and the output pin of switch (7) is connected on the control circuit by inner lead.
2. the anti-electromagnetic leakage structure that a kind of electromagnetic oven according to claim 1 is used, it is characterized in that: the through hole of opening on the described electromagnetic oven boiler face panel (2) is the centre on the panel (2), also can be other appropriate locations beyond boiler face panel (2) centre.
3. the anti-electromagnetic leakage structure that a kind of electromagnetic oven according to claim 1 is used, it is characterized in that: the portable stanchion of described resiliency supported (8) can be that the good material of conductivity is made, and in position is provided with a ground lead and is connected on the earth connection of power supply.
4. the anti-electromagnetic leakage structure that a kind of electromagnetic oven according to claim 1 is used is characterized in that: the portable stanchion of described resiliency supported (8) can be a cylinder, housing, discrete part combination forming shape, temperature sensor housing.
5. the anti-electromagnetic leakage structure that a kind of electromagnetic oven according to claim 1 is used, it is characterized in that: described switch (7) can be that an active and static contact that simply has a make break contact is formed, and also can be one and be furnished with the sensitive switch that transmission feeler lever and make break contact are packaged together.
6. the anti-electromagnetic leakage structure that a kind of electromagnetic oven according to claim 1 is used, it is characterized in that: the portable stanchion of described resiliency supported (8) can be respectively two independent parts with switch (7), also can be the globality part of combining by certain way.
7. the anti-electromagnetic leakage structure that a kind of electromagnetic oven according to claim 1 is used is characterized in that: the portable stanchion of described resiliency supported (8) can be the closure and the disconnection of trigger switch (7) contact directly or indirectly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520063672 CN2834086Y (en) | 2005-08-30 | 2005-08-30 | Electromagnetic leakage prevention structure for electromagnetic oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520063672 CN2834086Y (en) | 2005-08-30 | 2005-08-30 | Electromagnetic leakage prevention structure for electromagnetic oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2834086Y true CN2834086Y (en) | 2006-11-01 |
Family
ID=37198396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520063672 Expired - Fee Related CN2834086Y (en) | 2005-08-30 | 2005-08-30 | Electromagnetic leakage prevention structure for electromagnetic oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2834086Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997134A (en) * | 2014-05-22 | 2014-08-20 | 中国矿业大学 | Radiation-free wireless power transfer and supply device |
| CN108366444A (en) * | 2018-04-18 | 2018-08-03 | 青岛科技大学 | A kind of electromagnetic type cup heater |
| CN108497939A (en) * | 2018-06-07 | 2018-09-07 | 贺运香 | A kind of heated base and the cooking device using the heated base |
| CN110454823A (en) * | 2019-08-24 | 2019-11-15 | 珠海格力电器股份有限公司 | Control method, device, storage medium and the electromagnetic oven of electromagnetic oven heating power |
| CN112618367A (en) * | 2020-12-30 | 2021-04-09 | 上海观道生物科技有限公司 | Heating device of decoction barrel based on electromagnetic oven heating |
-
2005
- 2005-08-30 CN CN 200520063672 patent/CN2834086Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997134A (en) * | 2014-05-22 | 2014-08-20 | 中国矿业大学 | Radiation-free wireless power transfer and supply device |
| CN108366444A (en) * | 2018-04-18 | 2018-08-03 | 青岛科技大学 | A kind of electromagnetic type cup heater |
| CN108497939A (en) * | 2018-06-07 | 2018-09-07 | 贺运香 | A kind of heated base and the cooking device using the heated base |
| CN110454823A (en) * | 2019-08-24 | 2019-11-15 | 珠海格力电器股份有限公司 | Control method, device, storage medium and the electromagnetic oven of electromagnetic oven heating power |
| CN112618367A (en) * | 2020-12-30 | 2021-04-09 | 上海观道生物科技有限公司 | Heating device of decoction barrel based on electromagnetic oven heating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |