CN105158588A - Non-isolated type cooker detection apparatus and method for commercial induction cooker - Google Patents
Non-isolated type cooker detection apparatus and method for commercial induction cooker Download PDFInfo
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- CN105158588A CN105158588A CN201410245575.XA CN201410245575A CN105158588A CN 105158588 A CN105158588 A CN 105158588A CN 201410245575 A CN201410245575 A CN 201410245575A CN 105158588 A CN105158588 A CN 105158588A
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Abstract
The invention discloses a non-isolated type cooker detection apparatus and method for a commercial induction cooker. The detection apparatus comprises a high-voltage major loop, an IGBT module, an IGBT drive module, a sampling filter module, an MCU processor, and an electromagnetic induction coil. The input end of the high-voltage major loop is connected to commercial power. A signal input end of the MCU processor is connected to a signal output end of the IGBT drive module. A signal output end of the IGBT drive module is connected to the IGBT module. The IGBT module is connected to a signal input end of the high-voltage major loop. A signal input end of the MCU processor is connected to the high-voltage major loop through the sampling filter module. The high-voltage major loop is connected to the electromagnetic induction coil. The invention also discloses a non-isolated type cooker detection method for a commercial induction cooker. Bypass filter capacitance and voltage of the high-voltage major loop can be directly sampled and detected. The apparatus is practical and convenient. The circuit design is greatly optimized, the circuit design cost is reduced, and the product competitiveness is improved.
Description
Technical field
The present invention relates to commercial induction cooker technology, particularly relate to the non-isolated pan pick-up unit of a kind of commercial induction cooker and method.
Background technology
The electric current of electric current or high frequency side that traditional household electromagnetic cooker and commercial induction cooker load detecting often sample power frequency side carries out load detecting, the shortcoming of the method is must at high-pressure side series current mutual inductor, utilize the secondary output of current transformer to detect, circuit structure complexity is loaded down with trivial details.
Summary of the invention
Technical matters to be solved by this invention is: provide the non-isolated pan pick-up unit of a kind of commercial induction cooker and method, directly the bypass filter capacitor voltage of high pressure major loop is sampled, detected, not only simple, practical, convenient, and can Optimization Design of Electronic Circuits greatly, reduce circuit design cost, the competitive power of improving product.
For solving the problems of the technologies described above, the present invention proposes the non-isolated pan pick-up unit of a kind of commercial induction cooker, comprise high pressure major loop, IGBT module, IGBT drive module, sampling filtration module, MCU processor and electromagnetic induction coil, the current input terminal of described high pressure major loop is electrically connected with city, the signal output part of MCU processor connects the signal input part of IGBT drive module, the signal output part of IGBT drive module connects IGBT module, and IGBT module connects the signal input part of high pressure major loop; The signal input part of MCU processor connects high pressure major loop by sampling filtration module; High pressure major loop connects electromagnetic induction coil.
Further, described high pressure major loop comprises rectifier circuit, differential mode choke coil L1, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electromagnetic induction coil, wherein, pin 2 and the pin 3 of rectifier circuit are electrically connected with city, the A end of differential mode choke coil L1 is connected with the pin 1 of rectifier circuit, and the B end of differential mode choke coil L1 connects electric capacity C4; The other end of electric capacity C4 connects the pin 4 of single-phase rectifier bridge module, and the two ends of electric capacity C3 connect pin 1 and the pin 4 of rectifier circuit respectively; One end of electric capacity C2 is held with the B of differential mode choke coil L1 and is connected, and the other end of electric capacity C2 connects electric capacity C5, and the other end of electric capacity C5 connects the pin 4 of rectifier circuit; One end of electric capacity C1 connects the B end of differential mode choke coil L1 and the first signal output part of IGBT module respectively, the other end of electric capacity C1 connects electric capacity C6, the other end of electric capacity C6 connects the pin 4 of rectifier circuit and the secondary signal output terminal of IGBT module respectively, electric capacity C2 is connected one end of electromagnetic induction coil with the link of electric capacity C5, and electric capacity C1 and the link of electric capacity C6 are connected the other end of electromagnetic induction coil and the 3rd signal output part of IGBT module respectively; The B end of differential mode choke coil L1 connects the signal input part of sampling filtration module.
For solving the problems of the technologies described above, the invention allows for the non-isolated pan detection method of a kind of commercial induction cooker, adopt the non-isolated pan pick-up unit of above-mentioned commercial induction cooker, the method comprises the following steps:
Step 1, high pressure major loop normally works, and MCU processor sends a pot inspection pulse signal every the schedule time to IGBT drive module, and IGBT drive module drives IGBT module work;
Step 2, the operating voltage signal that sampling filtration module obtains high pressure major loop directly flows to MCU processor;
Step 3, MCU processor compares the reference voltage of the operating voltage signal of conveying with setting, if operating voltage signal Vc1 is greater than reference voltage △ V, now non-loaded the or inappropriate judgement of load made by MCU processor, do not start heating; If operating voltage signal Vc1 is less than reference voltage △ V, now MCU processor make load and load be applicable to judgement, and then start heating schedule, directly load is heated.
Further, the pot inspection pulse signal that described MCU processor exports is the complementary IGBT drive singal with dead band of two-way.
Technique scheme at least has following beneficial effect: the present invention adopts and directly samples the bypass filter capacitor voltage of high pressure major loop, detect, not only simple, practical, convenient, and can Optimization Design of Electronic Circuits greatly, reduce circuit design cost, the competitive power of improving product.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the non-isolated pan pick-up unit of commercial induction cooker of the present invention.
Fig. 2 is the circuit theory diagrams of the non-isolated pan pick-up unit of commercial induction cooker of the present invention.
Fig. 3 is the oscillogram of IGBT drive singal in the non-isolated pan pick-up unit of commercial induction cooker of the present invention.
Fig. 4 is operating voltage signal Vc1 and the comparison diagram setting reference voltage △ V in the non-isolated pan pick-up unit of commercial induction cooker of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below in conjunction with accompanying drawing, the present invention is described further.
Embodiment one
The present invention is to provide the non-isolated pan pick-up unit of a kind of commercial induction cooker and method, load detecting is carried out by the sampling electric current of power frequency side or the electric current of high frequency side for solving household electromagnetic cooker traditional at present and commercial induction cooker load detecting, must at high-pressure side series current mutual inductor, utilize the secondary output of current transformer to detect, cause the complicated loaded down with trivial details problem of circuit structure.
As shown in Figure 1 and Figure 2, the non-isolated pan pick-up unit of commercial induction cooker of the embodiment of the present invention comprises high pressure major loop 1, IGBT module 2, IGBT drive module 3, sampling filtration module 4 and MCU processor 5, described high pressure major loop 1 current input terminal is electrically connected with city, the signal output part of MCU processor 5 connects the signal input part of IGBT drive module 3, the signal output part of IGBT drive module 3 connects IGBT module 2, and IGBT module 2 connects the signal input part of high pressure major loop 1; The signal input part of MCU processor 5 connects high pressure major loop 1 by sampling filtration module 4; High pressure major loop 1 connects electromagnetic induction coil 6.Wherein, high pressure major loop 1 comprises rectifier circuit 11, differential mode choke coil L1, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electromagnetic induction coil 6, wherein, pin 2 and the pin 3 of rectifier circuit 11 are electrically connected with city, the A end of differential mode choke coil L1 is connected with the pin 1 of rectifier circuit 11, and the B end of differential mode choke coil L1 connects electric capacity C4; The other end of electric capacity C4 connects the pin 4 of single-phase rectifier bridge module, and the two ends of electric capacity C3 connect pin 1 and the pin 4 of rectifier circuit 11 respectively; One end of electric capacity C2 is held with the B of differential mode choke coil L1 and is connected, and the other end of electric capacity C2 connects electric capacity C5, and the other end of electric capacity C5 connects the pin 4 of rectifier circuit 11; One end of electric capacity C1 connects the B end of differential mode choke coil L1 and the first signal output part of IGBT module 2 respectively, the other end of electric capacity C1 connects electric capacity C6, the other end of electric capacity C6 connects the pin 4 of rectifier circuit 11 and the secondary signal output terminal of IGBT module 2 respectively, electric capacity C2 is connected one end of electromagnetic induction coil 6 with the link of electric capacity C5, and electric capacity C1 and the link of electric capacity C6 are connected the other end of electromagnetic induction coil 6 and the 3rd signal output part of IGBT module 2 respectively; The B end of differential mode choke coil L1 connects the signal input part of sampling filtration module 4.
Embodiment two
The non-isolated pan detection method of commercial induction cooker of the embodiment of the present invention comprises the following steps:
Step 1, high pressure major loop 1 normally works, and MCU processor 5 sends a pot inspection pulse signal every the schedule time to IGBT drive module 3, and IGBT drive module 3 drives IGBT module 2 to work;
Step 2, the operating voltage signal that sampling filtration module 4 obtains high pressure major loop 1 directly flows to MCU processor 5;
Step 3, MCU processor 5 compares the reference voltage of the operating voltage signal of conveying with setting, if operating voltage signal is greater than reference voltage, now non-loaded the or inappropriate judgement of load made by MCU processor 5, do not start heating; If operating voltage signal is less than reference voltage, now MCU processor 5 make load and load be applicable to judgement, and then start heating schedule, directly load is heated.
Commercial induction cooker major loop is half-bridge loop, during work, as shown in Figure 1, MCU processor 5 exports the complementary IGBT drive singal with dead band of two-way to IGBT drive module 3, IGBT drive module 3 drives IGBT module 2 to work, as shown in Figure 3, be several pulses of upper and lower bridge arm of sequential complementation, the duration of pulse is T to the waveform of this IGBT drive singal.The AD input port that operating voltage signal Vc1 on high-voltage filtering capacitor C4 directly flows to MCU processor 5 after sampling filtration module 4 processes carries out calculating and processing.If now do not have load or load very light, the AD sampled signal values flowing to MCU processor 5 is larger, as shown in Figure 4, compare with setting value △ V, if operating voltage signal Vc1 is greater than reference voltage △ V, now MCU processor 5 just can make the non-loaded or inappropriate judgement of load, does not start heating; If operating voltage signal Vc2 is less than reference voltage △ V, now MCU processor 5 make load and load be applicable to judgement, and then start heating schedule, directly load is heated.
When load pan detects, the drive singal of IGBT module 2 is directly produced by MCU processor 5.And load condition detection signal takes from the voltage on the bypass filter capacitor C4 of high pressure major loop 1, this signal, after sampling filtration module 4 processes, flows to MCU processor 5 and carries out calculating and processing.Not only simple, practical, convenient, and can Optimization Design of Electronic Circuits greatly, reduce circuit design cost, the competitive power of improving product.
The above is the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (4)
1. the non-isolated pan pick-up unit of commercial induction cooker, it is characterized in that, comprise high pressure major loop, IGBT module, IGBT drive module, sampling filtration module, MCU processor and electromagnetic induction coil, the current input terminal of described high pressure major loop is electrically connected with city, the signal output part of MCU processor connects the signal input part of IGBT drive module, the signal output part of IGBT drive module connects IGBT module, and IGBT module connects the signal input part of high pressure major loop; The signal input part of MCU processor connects high pressure major loop by sampling filtration module; High pressure major loop connects electromagnetic induction coil.
2. the non-isolated pan pick-up unit of commercial induction cooker as claimed in claim 1, it is characterized in that, described high pressure major loop comprises rectifier circuit, differential mode choke coil L1, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electromagnetic induction coil, wherein, pin 2 and the pin 3 of rectifier circuit are electrically connected with city, the A end of differential mode choke coil L1 is connected with the pin 1 of rectifier circuit, and the B end of differential mode choke coil L1 connects electric capacity C4; The other end of electric capacity C4 connects the pin 4 of single-phase rectifier bridge module, and the two ends of electric capacity C3 connect pin 1 and the pin 4 of rectifier circuit respectively; One end of electric capacity C2 is held with the B of differential mode choke coil L1 and is connected, and the other end of electric capacity C2 connects electric capacity C5, and the other end of electric capacity C5 connects the pin 4 of rectifier circuit; One end of electric capacity C1 connects the B end of differential mode choke coil L1 and the first signal output part of IGBT module respectively, the other end of electric capacity C1 connects electric capacity C6, the other end of electric capacity C6 connects the pin 4 of rectifier circuit and the secondary signal output terminal of IGBT module respectively, electric capacity C2 is connected one end of electromagnetic induction coil with the link of electric capacity C5, and electric capacity C1 and the link of electric capacity C6 are connected the other end of electromagnetic induction coil and the 3rd signal output part of IGBT module respectively; The B end of differential mode choke coil L1 connects the signal input part of sampling filtration module.
3. the non-isolated pan detection method of commercial induction cooker, is characterized in that, adopt the non-isolated pan pick-up unit of commercial induction cooker as claimed in claim 1 or 2, the method comprises the following steps:
Step 1, high pressure major loop normally works, and MCU processor sends a pot inspection pulse signal every the schedule time to IGBT drive module, and IGBT drive module drives IGBT module work;
Step 2, the operating voltage signal that sampling filtration module obtains high pressure major loop directly flows to MCU processor;
Step 3, MCU processor compares the reference voltage of the operating voltage signal of conveying with setting, if operating voltage signal Vc1 is greater than reference voltage △ V, now non-loaded the or inappropriate judgement of load made by MCU processor, do not start heating; If operating voltage signal Vc1 is less than reference voltage △ V, now MCU processor make load and load be applicable to judgement, and then start heating schedule, directly load is heated.
4. the non-isolated pan detection method of commercial induction cooker as claimed in claim 3, is characterized in that, the pot inspection pulse signal that described MCU processor exports is the complementary IGBT drive singal with dead band of two-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410245575.XA CN105158588A (en) | 2014-06-04 | 2014-06-04 | Non-isolated type cooker detection apparatus and method for commercial induction cooker |
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| CN201410245575.XA CN105158588A (en) | 2014-06-04 | 2014-06-04 | Non-isolated type cooker detection apparatus and method for commercial induction cooker |
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| CN201410245575.XA Pending CN105158588A (en) | 2014-06-04 | 2014-06-04 | Non-isolated type cooker detection apparatus and method for commercial induction cooker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203862A (en) * | 2014-06-04 | 2015-12-30 | 广东鼎燊科技有限公司 | Load detection device and method of commercial induction cooker |
| CN109404991A (en) * | 2018-11-09 | 2019-03-01 | 深圳市凌隽商贸有限公司 | A kind of electromagnetic oven |
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| JPH0831560A (en) * | 1994-07-19 | 1996-02-02 | Hitachi Home Tec Ltd | Induction cooking appliance |
| JP2000023830A (en) * | 1998-07-15 | 2000-01-25 | Mitsubishi Electric Corp | Electromagnetic induction heating rice cooker and its manufacture |
| CN2898659Y (en) * | 2005-12-31 | 2007-05-09 | 深圳市鑫汇科电子有限公司 | Electromagnetic cooker |
| CN201021818Y (en) * | 2007-03-01 | 2008-02-13 | 东莞市前锋电子有限公司 | Circuit device for electromagnetic furnace detection boiler |
| CN101309529A (en) * | 2008-06-27 | 2008-11-19 | 武汉理工大学 | Intelligent control apparatus and method for high-power energy saving electromagnetic stove |
| CN103307646A (en) * | 2013-05-14 | 2013-09-18 | 广东鼎燊科技有限公司 | Device and method for unloading detection of commercial induction cookers |
| CN105203862A (en) * | 2014-06-04 | 2015-12-30 | 广东鼎燊科技有限公司 | Load detection device and method of commercial induction cooker |
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2014
- 2014-06-04 CN CN201410245575.XA patent/CN105158588A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0831560A (en) * | 1994-07-19 | 1996-02-02 | Hitachi Home Tec Ltd | Induction cooking appliance |
| JP2000023830A (en) * | 1998-07-15 | 2000-01-25 | Mitsubishi Electric Corp | Electromagnetic induction heating rice cooker and its manufacture |
| CN2898659Y (en) * | 2005-12-31 | 2007-05-09 | 深圳市鑫汇科电子有限公司 | Electromagnetic cooker |
| CN201021818Y (en) * | 2007-03-01 | 2008-02-13 | 东莞市前锋电子有限公司 | Circuit device for electromagnetic furnace detection boiler |
| CN101309529A (en) * | 2008-06-27 | 2008-11-19 | 武汉理工大学 | Intelligent control apparatus and method for high-power energy saving electromagnetic stove |
| CN103307646A (en) * | 2013-05-14 | 2013-09-18 | 广东鼎燊科技有限公司 | Device and method for unloading detection of commercial induction cookers |
| CN105203862A (en) * | 2014-06-04 | 2015-12-30 | 广东鼎燊科技有限公司 | Load detection device and method of commercial induction cooker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203862A (en) * | 2014-06-04 | 2015-12-30 | 广东鼎燊科技有限公司 | Load detection device and method of commercial induction cooker |
| CN109404991A (en) * | 2018-11-09 | 2019-03-01 | 深圳市凌隽商贸有限公司 | A kind of electromagnetic oven |
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Address after: 518000 A 405, Da Bai Hui hi tech Industrial Park, deep salt road, Yantian District, Shenzhen, Guangdong Applicant after: Guangdong dingshen cloud kitchen Polytron Technologies Inc Address before: 518000 A 405, Da Bai Hui hi tech Industrial Park, deep salt road, Yantian District, Shenzhen, Guangdong Applicant before: Guangdong Dingcan Technology Co., Ltd. |
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