CN203671677U - Electromagnetic range - Google Patents
Electromagnetic range Download PDFInfo
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- CN203671677U CN203671677U CN201420063979.2U CN201420063979U CN203671677U CN 203671677 U CN203671677 U CN 203671677U CN 201420063979 U CN201420063979 U CN 201420063979U CN 203671677 U CN203671677 U CN 203671677U
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- Electric Stoves And Ranges (AREA)
- General Induction Heating (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The utility model discloses an electromagnetic range which comprises a range body, a backboard and a plurality of supporting legs fixed on the range body. The range body comprises a range panel, a front side plate arranged under the range panel, at least one range opening arranged on the range panel, a concave microcrystal glass plate arranged in the range opening and a matched heating coil arranged at the bottom of the concave microcrystal glass plate. The backboard is detachably connected with the range body. The lower portion of the front side plate is of an oblique plane or cambered surface structure. A control circuit board arranged in the range body and enabling output power of the electromagnetic range to be kept constant is electrically connected with the heating coil. The electromagnetic range is convenient to transport, the user experience is improved, foods can be evenly heated and processed foods have good taste through constant-power control, the energy conversion efficiency can be further improved, and electric energy saving is facilitated.
Description
Technical field
The utility model relates to a kind of electric cooking apparatus, especially relates to a kind of electromagnetic stove that utilizes electromagnetic inductive heating principle to make.
Background technology
Conventional commercial kitchen kitchen tools are still take the combustion gas of naked light, oil range as main.Along with the development electromagnetic stove of kitchen range technology is a kind of energy-efficient kitchen tools, substitute traditional naked-fire stove mode of heating, directly produce heat in the bottom of a pan, the thermal efficiency is greatly improved.
Electromagnetic stove is because its thermal efficiency is high, the heating flames of anger, in use do not produce pernicious gas, can there is not the dangerous situations such as gas-cooker gas leakage, poisoning, blast, thereby be subject to the welcome of most people, be widely used in now the commercial field such as dining room, restaurant yet.
There is following defect in existing electromagnetic stove:
1, in order to prevent that in use procedure, greasy dirt is got on wall, electromagnetic stove rear side is all provided with backboard, and the backboard of existing electromagnetic stove and stove are overall structure, and the backboard of projection need to take larger space, is not easy to transportation.
2, the steel panel that the front side board of electromagnetic stove stove is square or rectangular, operator is in the time using electromagnetic stove, and operator's pin is easy to touch the lower edge of front side board.
3, operator is in the time using electromagnetic stove cooking, and the custom that mostly has (especially cook) to throw up and down pot is moved and made in pan food be stir-fried to be heated evenly by throwing up and down pot.Throw up and down in the process of pot at operation pan, in the relative electromagnetic stove of pan, heater coil disc moves up and down, distance between pan and heater coil disc is changed, cause inductance value in LC resonance circuit to change, affect LC resonance frequency, thereby the power output of high-power induction cooker is changed, not only reduce the conversion efficiency of energy, also because power output changes, to cause heating firepower unstable, makes in pan food be heated inhomogeneous and affected the mouthfeel of frying out vegetable.
Utility model content
In order to overcome the above-mentioned technological deficiency of existing electromagnetic stove, the utility model proposes that a kind of backboard is removable, the bottom of front side board is inclined-plane or globoidal structure and there is the electromagnetic stove of stable power output.
The utility model adopts following technical scheme to realize: a kind of electromagnetic stove, comprise stove, backboard and be fixed on several feets on stove, stove comprises range panel, be arranged on range panel below front side board, be arranged at least one kitchen range mouth on range panel, be arranged on the spill microcrystal glass plate in kitchen range mouth and be provided with the heater coil matching in the bottom of spill microcrystal glass plate; Backboard is connected with stove is detachable; The bottom of front side board is inclined-plane or globoidal structure; Be arranged on the control circuit board that makes electromagnetic stove keep constant power output in stove, this control circuit board and heater coil are electrically connected.
Wherein, control circuit board comprises: EMC module, rectification circuit, filter circuit, inverter circuit and LC resonance circuit that order is connected, and the input of EMC module is connected with three-phase alternating-current supply; Connect the drive circuit of inverter circuit control end; Connect the output current sample circuit of described LC resonance circuit; For the input voltage of difference sampling three-phase AC power and input voltage sample circuit and the output current sample circuit of input current; The pwm signal pulsewidth that exports described drive circuit by change to makes driving signal frequency f
1follow the resonant frequency f of LC resonance circuit
0carry out in the same way with quantitative change, make described electromagnetic stove keep the microcontroller of constant output, described microcontroller connects respectively described output current sample circuit, described input voltage sample circuit, described output current sample circuit and described drive circuit.
Wherein, inverter circuit is the half-bridge IGBT module that 2 high-power switch tube IGBT1 and IGBT2 form.
Wherein, LC resonance circuit comprises resonant capacitance C1, resonant capacitance C2 and the heater coil disc of serial connection, and be arranged on the pan of heater coil disc top, and the resonant frequency of LC resonance circuit is lower than the lowest operating frequency of 2 high-power switch tube IGBT1 in inverter circuit and IGBT2.
Wherein, filter circuit comprises inductance L 2 and the inductance L 3 of two outputs that are serially connected in respectively rectification circuit, and is connected to the filter capacitor C3 between inductance L 2 and inductance L 3.
Wherein, backboard is provided with the tap that connects water source.
Wherein, backboard is provided with display screen.
Wherein, front side board is provided with front side board is opened or fastening handle from stove.
Compared with prior art, the utlity model has following beneficial effect:
1, backboard is detachable connection with stove, convenient transportation.
2, the bottom of front side board is set to inclined-plane or cambered surface, makes the bottom of front side board be difficult to touch operator's pin, thereby has improved the user experience that uses electromagnetic stove.
3, control circuit board makes electromagnetic stove keep constant power output, makes electromagnetic stove realize " naked light " and heats the heating stable fire having, even if electromagnetic stove has been realized the heating efficiency of " naked light emulation "; And, the utility model can make electromagnetic stove throw up and down and in pot process, keep stable power output cook, existing commercial induction cooker is thrown to the reactive power producing in pot process up and down cook and become active power energy transform into heat energy, not only guarantee that food is heated evenly and food after processing has good mouthfeel, can also put forward high-octane conversion efficiency, be conducive to save electric energy.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model electromagnetic stove.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the electrical block diagram of the control circuit board of the utility model electromagnetic stove.
The specific embodiment
Shown in Fig. 1 and Fig. 2, electromagnetic stove comprises: stove 1; With the detachable backboard being connected 2 of stove 1; Be fixed on several feets 3 on stove 1.Wherein, backboard 2 can be connected with stove 1 is detachable by the securing members such as screw or snap-in structure.
On backboard 2, be provided with the tap 21 that connects water source.The display screen 22 that the person that is also provided with convenient operation on backboard 2 observes, such as by display screen 22 displays temperature in the time that electromagnetic stove is worked.
When use, pan is placed on spill microcrystal glass plate 23, pan and spill microcrystal glass plate 23 close contacts, and the magnetic line of force of heater coil sees through spill microcrystal glass plate 23, with the direct eddy generation of pan, makes pan produce rapidly and efficiently heat.
Specifically, shown in Fig. 3, control circuit board comprises: the EMC module being linked in sequence successively, rectification circuit, filter circuit, inverter circuit and LC resonance circuit, the input of this EMC module connects three-phase alternating-current supply, output connects respectively input current sample circuit and input voltage sample circuit, the output current sample circuit being connected with LC resonance circuit, and input current sample circuit, input voltage sample circuit is all connected microcontroller (being generally to be realized by single-chip microcomputer or dsp chip) with output current sample circuit, and a control port of microcontroller connects the control end of inverter circuit by drive circuit.
The electromagnetic interference being realized between three-phase alternating-current supply and electromagnetic stove by EMC module is isolated.Such as, EMC module comprises the inductance and the protective tube that are serially connected in respectively that A phase, B phase and C go up mutually, and be connected respectively a filter capacitor between the common port of the inductance of going up mutually at A phase, B phase and C and protective tube and zero line N.And filter circuit comprises inductance L 2 and the inductance L 3 of two outputs that are serially connected in respectively rectification circuit, and be connected to the filter capacitor C3 between inductance L 2 and inductance L 3.Inverter circuit is the half-bridge IGBT module that 2 high-power switch tube IGBT1 and IGBT2 form.LC resonance circuit comprises resonant capacitance C1, resonant capacitance C2 and the heater coil disc L1 of serial connection, and be arranged on the pan of heater coil disc L1 top, and the resonant frequency of LC resonance circuit is a little less than the lowest operating frequency of 2 high-power switch tube IGBT1 in inverter circuit and IGBT2, makes to load in any case (no matter pan is apart from situations such as the distances of heater coil disc L1) and be all perception.
Three-phase alternating-current supply is rectified into DC voltage through rectification circuit, circuit filtering is processed into and stablizes level and smooth DC voltage after filtering, convert the high-frequency ac signal of telecommunication to by inverter circuit, in LC resonance circuit, heater coil disc L1 crosses high-frequency ac current in upper reaches, the alternating current of high frequency produces the electromagnetic field of alternation, according to electromagnetic inductive heating principle, after placing cooker above heater coil disc L1, electromagnetic energy is radiated to the bottom of a pan of pan, the bottom of a pan of pan produces eddy current, due to the fuel factor heating pan of eddy current, thereby realize electric energy energy transform into heat energy heating pan.
Detect the high-frequency ac current flowing through on heater coil disc L1 by output current sample circuit, will change into after square-wave signal for sinusoidal wave high-frequency ac current, be sent to a detection port of microcontroller.Microcontroller is determined the frequency of the high-frequency ac current flowing through on heater coil disc L1, i.e. resonant frequency f by the frequency of definite square-wave signal of sampling
0.
Meanwhile, by input current sample circuit, input voltage sample circuit sample respectively input current and input voltage be sent to microcontroller, calculated the power (power=input voltage * input current) of electromagnetic stove by microcontroller.
In the time that operator (such as cook) uses electromagnetic stove cooking, for the food in pan is quick, homogeneous heating, cook can have the custom of throwing up and down pot often.Throwing up and down in pot process, while leaving heater coil disc L1 as the pan of load, the inductance value of heater coil disc L1 reduces, therefore resonant frequency f
0can become large, now microcontroller detects resonant frequency f by output current sample circuit
0the large △ f of change; Simultaneously, when while throwing pot up and down, pan tool leaves heater coil disc L1, the power of electromagnetic stove can reduce, therefore microcontroller is sampled respectively after input current and input voltage by input current sample circuit, input voltage sample circuit in real time, calculate the power of electromagnetic stove, in the power reduction of electromagnetic stove and resonant frequency f detected
0while becoming large △ f, microcontroller regulates drive circuit to export the frequency f of the driving signal of inverter circuit to by the pulsewidth that changes control port output pwm signal
1, make driving signal frequency f
1also change in the same way △ f, thereby make driving signal frequency f
1a little more than resonant frequency f
0, make LC resonance circuit close to resonant condition, in LC resonance circuit, the electric current of heater coil disc L1 is uprushed and makes electromagnetic stove keep higher power output.
Certainly,, while getting back to heater coil disc L1 top as the pan of load, now microcontroller will detect resonant frequency f
0the △ f that diminishes, also the power output that electromagnetic stove detected is changed simultaneously, make driving signal frequency f by microcontroller by the pulsewidth that changes pwm signal
1follow resonant frequency f
0carrying out the synchronous tracking with amount in the same way changes.
Certainly, when microcontroller detects resonant frequency f
0increase after in Preset Time section (such as 3 seconds), still maintain some values, judge that pan thoroughly removes from electromagnetic stove, now microcontroller stops sending pwm signal to drive circuit, thereby electromagnetic stove is quit work, and has avoided waste of energy and electromagnetic leakage.
To sum up, compared with prior art, the utlity model has following useful technique effect:
1, backboard is detachable connection with stove, convenient transportation.
2, the bottom of front side board is set to inclined-plane or cambered surface, makes the bottom of front side board be difficult to touch operator's pin, thereby has improved the user experience that uses electromagnetic stove.
3, control circuit board makes electromagnetic stove keep constant power output, makes electromagnetic stove realize " naked light " and heats the heating stable fire having, even if electromagnetic stove has been realized the heating efficiency of " naked light emulation "; And, the utility model can make electromagnetic stove throw up and down and in pot process, keep stable power output cook, existing commercial induction cooker is thrown to the reactive power producing in pot process up and down cook and become active power energy transform into heat energy, not only guarantee that food is heated evenly and food after processing has good mouthfeel, can also put forward high-octane conversion efficiency, be conducive to save electric energy.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. an electromagnetic stove, comprise stove, backboard and be fixed on several feets on stove, stove comprises range panel, be arranged on range panel below front side board, be arranged at least one kitchen range mouth on range panel, be arranged on the spill microcrystal glass plate in kitchen range mouth and be provided with the heater coil matching in the bottom of spill microcrystal glass plate, it is characterized in that:
Backboard is connected with stove is detachable;
The bottom of front side board is inclined-plane or globoidal structure;
Be arranged on the control circuit board that makes electromagnetic stove keep constant power output in stove, this control circuit board and heater coil are electrically connected.
2. electromagnetic stove according to claim 1, is characterized in that, control circuit board comprises:
EMC module, rectification circuit, filter circuit, inverter circuit and LC resonance circuit that order is connected, the input of EMC module is connected with three-phase alternating-current supply;
Connect the drive circuit of inverter circuit control end;
Connect the output current sample circuit of described LC resonance circuit;
For the input voltage of difference sampling three-phase AC power and input voltage sample circuit and the output current sample circuit of input current;
The pwm signal pulsewidth that exports described drive circuit by change to makes driving signal frequency f
1follow the resonant frequency f of LC resonance circuit
0carry out in the same way with quantitative change, make described electromagnetic stove keep the microcontroller of constant output, described microcontroller connects respectively described output current sample circuit, described input voltage sample circuit, described output current sample circuit and described drive circuit.
3. electromagnetic stove according to claim 2, is characterized in that, inverter circuit is the half-bridge IGBT module that 2 high-power switch tube IGBT1 and IGBT2 form.
4. electromagnetic stove according to claim 3, it is characterized in that, LC resonance circuit comprises resonant capacitance C1, resonant capacitance C2 and the heater coil disc of serial connection, and be arranged on the pan of heater coil disc top, and the resonant frequency of LC resonance circuit is lower than the lowest operating frequency of 2 high-power switch tube IGBT1 in inverter circuit and IGBT2.
5. electromagnetic stove according to claim 2, is characterized in that, filter circuit comprises inductance L 2 and the inductance L 3 of two outputs that are serially connected in respectively rectification circuit, and is connected to the filter capacitor C3 between inductance L 2 and inductance L 3.
6. electromagnetic stove according to claim 1, is characterized in that, backboard is provided with the tap that connects water source.
7. electromagnetic stove according to claim 1, is characterized in that, backboard is provided with display screen.
8. electromagnetic stove according to claim 1, is characterized in that, front side board is provided with to be opened front side board or fastening handle from stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420063979.2U CN203671677U (en) | 2014-02-13 | 2014-02-13 | Electromagnetic range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420063979.2U CN203671677U (en) | 2014-02-13 | 2014-02-13 | Electromagnetic range |
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| Publication Number | Publication Date |
|---|---|
| CN203671677U true CN203671677U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420063979.2U Expired - Lifetime CN203671677U (en) | 2014-02-13 | 2014-02-13 | Electromagnetic range |
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| Country | Link |
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| CN (1) | CN203671677U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373973A (en) * | 2014-10-30 | 2015-02-25 | 深圳市国创新能源研究院 | Electromagnetic oven and method and device for controlling power of electromagnetic oven |
| CN105222183A (en) * | 2015-10-20 | 2016-01-06 | 刘万斌 | A kind of commercial induction cooker with detachable panel |
| CN106028489A (en) * | 2016-07-05 | 2016-10-12 | 上海天剑电磁技术有限公司 | Linear type power adjusting device for induction cooker |
| CN107143894A (en) * | 2017-05-15 | 2017-09-08 | 深圳国创名厨商用设备制造有限公司 | Electromagnetism soup stove and the Poewr control method based on self-induction weight |
-
2014
- 2014-02-13 CN CN201420063979.2U patent/CN203671677U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373973A (en) * | 2014-10-30 | 2015-02-25 | 深圳市国创新能源研究院 | Electromagnetic oven and method and device for controlling power of electromagnetic oven |
| CN105222183A (en) * | 2015-10-20 | 2016-01-06 | 刘万斌 | A kind of commercial induction cooker with detachable panel |
| CN106028489A (en) * | 2016-07-05 | 2016-10-12 | 上海天剑电磁技术有限公司 | Linear type power adjusting device for induction cooker |
| CN107143894A (en) * | 2017-05-15 | 2017-09-08 | 深圳国创名厨商用设备制造有限公司 | Electromagnetism soup stove and the Poewr control method based on self-induction weight |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Futian District, 518000 Shenzhen Road, Guangdong province No. 1003 on the third floor of building 302-306 room Science Museum Patentee after: SHENZHEN GUOCHUANG MINGCHU COMMERCIAL EQUIPMENT MANUFACTURING CO.,LTD. Address before: Futian District, 518000 Shenzhen Road, Guangdong province No. 1003 on the third floor of building 302-306 room Science Museum Patentee before: SHENZHEN GUOCHUANG MANTRU COMMERCIAL EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
|
| CX01 | Expiry of patent term |