CN203617892U - Driving and control device used for coil panel of electric cooker - Google Patents
Driving and control device used for coil panel of electric cooker Download PDFInfo
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- CN203617892U CN203617892U CN201320682707.6U CN201320682707U CN203617892U CN 203617892 U CN203617892 U CN 203617892U CN 201320682707 U CN201320682707 U CN 201320682707U CN 203617892 U CN203617892 U CN 203617892U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a driving and control device used for a coil panel of an electric cooker. The driving and control device includes a rectifying and filtering circuit, the coil panel, an IGBT (Insulated Gate Bipolar Transistor) and an IGBT control circuit. The driving and control device also includes at least one detecting and sampling circuit and at least one sampling switching circuit. A first terminal of the detecting and sampling circuit is connected with a power voltage terminal, a first terminal of the coil panel, a second terminal of the coil panel or a control output terminal of the IGBT. A feedback terminal of the detecting and sampling circuit is connected with an input terminal of the IGBT control circuit. A second terminal of the detecting and sampling circuit is connected with a first terminal of the sampling switching circuit. A second terminal of the sampling switch circuit is in ground connection. A control input terminal of the sampling switching circuit is connected with a second control terminal of the IGBT control circuit. According to the utility model, the switching circuit is adopted for cutting the connection of the detecting and sampling circuit and a ground wire in a standby state, a current loop is avoided. The formation of a return circuit in the standby state since the current flows to the ground wire through the detecting and sampling circuit is avoided, so that comparatively high standby power consumption is prevented and standby power consumption reduction is facilitated.
Description
Technical field
The utility model relates to household electrical appliance technical field, particularly the coil panel driving control device of electric cooker.
Background technology
At present, in the coil panel driving control device of Domestic electric rice cooker, as shown in Figure 1, conventionally need to adopt the detection sample circuit 10 of electric resistance partial pressure form to carry out the current signal in magnetic test coil dish driving control device coil dish L loop, and the current signal detecting is fed back to IGBT control circuit 20, IGBT control circuit 20, according to the current signal of sampling, is controlled conducting or the cut-off of IGBT, and then realizes the control to coil panel L conducting and cut-off.Existing detection sample circuit 10 has comprised one or more independently current circuits, the sampling end that detects sample circuit 10 is high pressure spot, be directly connected to ground by each divider resistance, like this in standby, electric current can be by forming loop between these resistance and ground wire, thereby increased the power consumption of standby.
Utility model content
Main purpose of the present utility model is for providing the coil panel driving control device of the little and simple electric cooker of circuit structure of a kind of power consumption.
The utility model proposes a kind of coil panel driving control device of electric cooker, comprise current rectifying and wave filtering circuit, coil panel, IGBT and IGBT control circuit, the input of described current rectifying and wave filtering circuit connects power voltage terminal, the output of described current rectifying and wave filtering circuit connects described coil panel first end, described coil panel the second end connects the control output end of described IGBT, the control input end of described IGBT connects the first control end of described IGBT control circuit, also comprise at least one road detection sample circuit and at least one road sampling switch circuit, the first end of described detection sample circuit connects described power voltage terminal, or described coil panel first end, or described coil panel the second end, or the control output end of described IGBT, the feedback end of described detection sample circuit connects the input of IGBT control circuit, the second end of described detection sample circuit connects the first end of described sampling switch circuit, the second end ground connection of described sampling switch circuit, the control input end of described sampling switch circuit connects the second control end of described IGBT control circuit.
Preferably, the coil panel driving control device of described electric cooker also comprises power panel circuit, the input of described power panel circuit connects power voltage terminal, the earth terminal ground connection of described power panel circuit, the first voltage output end of described power panel circuit connects the voltage input end of described IGBT control circuit.
Preferably, described sampling switch circuit is photoelectrical coupler, and the first end of the photosensitive tube of described photoelectrical coupler, as the first end of described sampling switch circuit, connects the second end of described detection sample circuit; The second end of the photosensitive tube of described photoelectrical coupler is as the second end of described sampling switch circuit, ground connection; The second voltage output of power panel circuit described in the anodic bonding of the luminous tube of described photoelectrical coupler; The negative electrode of the luminous tube of described photoelectrical coupler, as the control input end of described sampling switch circuit, connects the second control end of described IGBT control circuit.
Preferably, described sampling switch circuit is triode, and the collector electrode of described triode, as the first end of described sampling switch circuit, connects the second end of described detection sample circuit; The emitter of described triode is as the second end of described sampling switch circuit, ground connection; The base stage of described triode, as the control input end of described sampling switch circuit, connects the second control end of described IGBT control circuit.
Preferably, described sampling switch circuit is metal-oxide-semiconductor, and the drain electrode of described metal-oxide-semiconductor, as the first end of described sampling switch circuit, connects the second end of described detection sample circuit; The source electrode of described metal-oxide-semiconductor is as the second end of described sampling switch circuit, ground connection; The grid of described metal-oxide-semiconductor, as the control input end of described sampling switch circuit, connects the second control end of described IGBT control circuit.
Preferably, described detection sample circuit comprises the first resistance and the second resistance, the first end of described the first resistance, as the first end of described detection sample circuit, connects the control output end of described power voltage terminal or described coil panel first end or described coil panel the second end or described IGBT; The second end of described the first resistance connects the first end of described the second resistance, and the second end of described the first resistance, also as the feedback end of described detection sample circuit, connects the input of IGBT control circuit; The second end of described the second resistance connects the first end of described sampling switch circuit as the second end of described detection sample circuit.
Preferably, described current rectifying and wave filtering circuit comprises bridge rectifier, inductance, the first electric capacity and the second electric capacity, the first end of described bridge rectifier connects the live wire of power voltage terminal, the 3rd end of described bridge rectifier connects the zero line of power voltage terminal, the 4th end ground connection of described bridge rectifier, the second end of described bridge rectifier is through the first capacity earth, the second end of described bridge rectifier also connects the first end of described inductance, the second end of described inductance is through the second capacity earth, the second end of described inductance also connects described coil panel first end.
Preferably, between described coil panel first end and the second end, be also connected with the 3rd electric capacity.
The utility model detects the path between sample circuit and ground wire while adopting switching circuit to cut off standby, electric current does not form loop, avoided in the time of standby electric current after testing sample circuit flow to ground wire and form loop, cause the situation that stand-by power consumption is larger to occur, be conducive to reduce stand-by power consumption.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the coil panel driving control device of electric cooker in prior art;
Fig. 2 is the structural representation of the coil panel driving control device embodiment of the utility model electric cooker;
Fig. 3 is the circuit diagram of coil panel L driving control device first embodiment of the utility model electric cooker;
Fig. 4 is the circuit diagram of coil panel L driving control device second embodiment of the utility model electric cooker;
Fig. 5 is the circuit diagram of coil panel L driving control device the 3rd embodiment of the utility model electric cooker.
Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 2, Fig. 2 is the structural representation of the coil panel driving control device embodiment of the utility model electric cooker.
The coil panel driving control device of the electric cooker that the present embodiment proposes, comprise current rectifying and wave filtering circuit 30, coil panel L, IGBT, IGBT control circuit 20 and power panel circuit 40, wherein, the input of current rectifying and wave filtering circuit 30 connects power voltage terminal V0, the output connecting coil dish L first end of current rectifying and wave filtering circuit 30, coil panel L the second end connects the control output end of IGBT, the control input end of IGBT connects the first control end of IGBT control circuit 20, the input of power panel circuit 40 connects power voltage terminal V0, the earth terminal ground connection of power panel circuit 40, the first voltage output end of power panel circuit 40 connects the voltage input end of IGBT control circuit 20, current rectifying and wave filtering circuit 30, coil panel L, IGBT, IGBT control circuit 20 and power panel circuit 40 form the driving control loop of coil panel L, the high power AC electricity of power voltage terminal V0 output is converted to small power DC electricity by power panel circuit 40, to supply with the required electricity consumption of low-power circuit module in coil panel driving control device.
The coil panel driving control device of electric cooker also comprises at least one road detection sample circuit 10, this detection sample circuit 10, the size of current being used on the driving control loop of magnetic test coil dish L, and testing result is fed back to IGBT control circuit 20, IGBT control circuit 20 is according to conducting and the cut-off of feedback result control IGBT, to adjust the size of current flowing through on coil panel L, and then realize the adjustment to coil panel L heating temp height.Concrete, detect the first end of sample circuit 10 as test side, size of current on the driving control loop of magnetic test coil dish L, for example, four tunnels are set and detect sample circuit 10, be connected on the control output end of power voltage terminal V0, coil panel L first end, coil panel L the second end and IGBT, the input of the feedback end connection IGBT control circuit 20 of sample circuit 10 is detected on each road, and the size of current detecting is fed back to IGBT control circuit 20.The present embodiment detects sample circuit 10 as example take control output end Shang mono-tunnel that is connected to IGBT, and the connected mode that sample circuit 10 is detected on other each roads can connect with reference to the connected mode that detects sample circuit 10 shown in Fig. 2.
For fear of electric current when the standby after testing sample circuit 10 flow to ground wire and form loop, cause the situation that stand-by power consumption is larger to occur, the present embodiment has increased sampling switch circuit 11 between detection sample circuit 10 and ground wire, specifically the second end that detects sample circuit 10 is connected with the first end of sampling switch circuit 11, the second end ground connection of sampling switch circuit 11, the control input end of sampling switch circuit 11 connects the second control end of IGBT control circuit 20.In the time of standby, IGBT control circuit 20 outputs a control signal to sampling switch circuit 11, controls sampling switch circuit 11 and ends, and while cutting off standby, detects the path between sample circuit 10 and ground wire, and electric current does not form loop, is conducive to reduce stand-by power consumption.In addition, the quantity of sampling switch circuit 11 is at least one road, can cut off multichannel by a road sampling switch circuit 11 simultaneously and detect sample circuit 10, is conducive to reduce component number, reduces costs; Sample circuit 10 is detected on the corresponding road of Huo Yi road sampling switch circuit 11, and it is more accurate to make to control, and reduces the burden of sampling switch circuit 11, raises the efficiency.
As shown in Figure 3, Fig. 3 is the circuit diagram of coil panel L driving control device first embodiment of the utility model electric cooker.
Current rectifying and wave filtering circuit 30 comprises bridge rectifier 31, inductance L 1, the first capacitor C 1 and the second capacitor C 2, bridge rectifier 31 forms electric bridge by four diodes, the first end of bridge rectifier 31 connects the ACL of power voltage terminal V0, the 3rd end of bridge rectifier 31 connects the ACN of power voltage terminal V0, the 4th end ground connection of bridge rectifier 31, the second end of bridge rectifier 31 is through the first capacitor C 1 ground connection, the second end of bridge rectifier 31 also connects the first end of inductance L 1, the second end of inductance L 1 is through the second capacitor C 2 ground connection, the second end of inductance L 1 is connecting coil dish L first end also, between coil panel L first end and the second end, be also connected with the 3rd capacitor C 3.Detect sample circuit 10 and comprise that the first end of the first resistance R 1 and the second resistance R 2, the first resistance R 1, as the first end of detection sample circuit 10, connects the control output end of power voltage terminal V0 or coil panel L first end or coil panel L the second end or IGBT; The second end of the first resistance R 1 connects the first end of the second resistance R 2, and the second end of the first resistance R 1, also as the feedback end that detects sample circuit 10, connects the input of IGBT control circuit 20; The second end of the second resistance R 2 connects the first end of sampling switch circuit 11 as the second end that detects sample circuit 10.
As shown in Figure 4, Fig. 4 is the circuit diagram of coil panel L driving control device second embodiment of the utility model electric cooker.
The present embodiment and difference embodiment illustrated in fig. 3 be, sampling switch circuit 11 is triode Q1, and the collector electrode of triode Q1, as the first end of sampling switch circuit 11, connects the second end of the second resistance R 2 that detects sample circuit 10; The emitter of triode Q1 is as the second end of sampling switch circuit 11, ground connection; The base stage of triode Q1, as the control input end of sampling switch circuit 11, connects the second control end of IGBT control circuit 20.In the time of normal work, IGBT control circuit 20 outputs a control signal to the base stage of triode Q1, controls triode Q1 conducting, the second end ground connection of the second resistance R 2; In the time of standby, IGBT control circuit 20 outputs a control signal to the base stage of triode Q1, controls triode Q1 cut-off, the path between the second end and the ground wire of cut-out the second resistance R 2, electric current does not form loop on detection sample circuit 10, is conducive to reduce stand-by power consumption.
As shown in Figure 5, Fig. 5 is the circuit diagram of coil panel L driving control device the 3rd embodiment of the utility model electric cooker.
The present embodiment and Fig. 3 and difference embodiment illustrated in fig. 4 be, sampling switch circuit 11 is metal-oxide-semiconductor Q2, and the drain electrode of metal-oxide-semiconductor Q2, as the first end of sampling switch circuit 11, connects the second end of the second resistance R 2 that detects sample circuit 10; The source electrode of metal-oxide-semiconductor Q2 is as the second end of sampling switch circuit 11, ground connection; The grid of metal-oxide-semiconductor Q2, as the control input end of sampling switch circuit 11, connects the second control end of IGBT control circuit 20.In the time of normal work, IGBT control circuit 20 outputs a control signal to the grid of metal-oxide-semiconductor Q2, controls metal-oxide-semiconductor Q2 conducting, the second end ground connection of the second resistance R 2; In the time of standby, IGBT control circuit 20 outputs a control signal to the grid of metal-oxide-semiconductor Q2, controls metal-oxide-semiconductor Q2 cut-off, the path between the second end and the ground wire of cut-out the second resistance R 2, and electric current does not form loop on detection sample circuit 10, is conducive to reduce stand-by power consumption.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. the coil panel driving control device of an electric cooker, comprise current rectifying and wave filtering circuit, coil panel, IGBT and IGBT control circuit, the input of described current rectifying and wave filtering circuit connects power voltage terminal, the output of described current rectifying and wave filtering circuit connects described coil panel first end, described coil panel the second end connects the control output end of described IGBT, the control input end of described IGBT connects the first control end of described IGBT control circuit, it is characterized in that, also comprise at least one road detection sample circuit and at least one road sampling switch circuit, the first end of described detection sample circuit connects described power voltage terminal, or described coil panel first end, or described coil panel the second end, or the control output end of described IGBT, the feedback end of described detection sample circuit connects the input of IGBT control circuit, the second end of described detection sample circuit connects the first end of described sampling switch circuit, the second end ground connection of described sampling switch circuit, the control input end of described sampling switch circuit connects the second control end of described IGBT control circuit.
2. the coil panel driving control device of electric cooker according to claim 1, it is characterized in that, also comprise power panel circuit, the input of described power panel circuit connects power voltage terminal, the earth terminal ground connection of described power panel circuit, the first voltage output end of described power panel circuit connects the voltage input end of described IGBT control circuit.
3. the coil panel driving control device of electric cooker according to claim 2, it is characterized in that, described sampling switch circuit is photoelectrical coupler, and the first end of the photosensitive tube of described photoelectrical coupler, as the first end of described sampling switch circuit, connects the second end of described detection sample circuit; The second end of the photosensitive tube of described photoelectrical coupler is as the second end of described sampling switch circuit, ground connection; The second voltage output of power panel circuit described in the anodic bonding of the luminous tube of described photoelectrical coupler; The negative electrode of the luminous tube of described photoelectrical coupler, as the control input end of described sampling switch circuit, connects the second control end of described IGBT control circuit.
4. the coil panel driving control device of electric cooker according to claim 1, it is characterized in that, described sampling switch circuit is triode, and the collector electrode of described triode, as the first end of described sampling switch circuit, connects the second end of described detection sample circuit; The emitter of described triode is as the second end of described sampling switch circuit, ground connection; The base stage of described triode, as the control input end of described sampling switch circuit, connects the second control end of described IGBT control circuit.
5. the coil panel driving control device of electric cooker according to claim 1, is characterized in that, described sampling switch circuit is metal-oxide-semiconductor, and the drain electrode of described metal-oxide-semiconductor, as the first end of described sampling switch circuit, connects the second end of described detection sample circuit; The source electrode of described metal-oxide-semiconductor is as the second end of described sampling switch circuit, ground connection; The grid of described metal-oxide-semiconductor, as the control input end of described sampling switch circuit, connects the second control end of described IGBT control circuit.
6. according to the coil panel driving control device of the electric cooker described in claim 3 to 5 any one, it is characterized in that, described detection sample circuit comprises the first resistance and the second resistance, the first end of described the first resistance, as the first end of described detection sample circuit, connects the control output end of described power voltage terminal or described coil panel first end or described coil panel the second end or described IGBT; The second end of described the first resistance connects the first end of described the second resistance, and the second end of described the first resistance, also as the feedback end of described detection sample circuit, connects the input of IGBT control circuit; The second end of described the second resistance connects the first end of described sampling switch circuit as the second end of described detection sample circuit.
7. the coil panel driving control device of electric cooker according to claim 6, it is characterized in that, described current rectifying and wave filtering circuit comprises bridge rectifier, inductance, the first electric capacity and the second electric capacity, the first end of described bridge rectifier connects the live wire of power voltage terminal, the 3rd end of described bridge rectifier connects the zero line of power voltage terminal, the 4th end ground connection of described bridge rectifier, the second end of described bridge rectifier is through the first capacity earth, the second end of described bridge rectifier also connects the first end of described inductance, the second end of described inductance is through the second capacity earth, the second end of described inductance also connects described coil panel first end.
8. the coil panel driving control device of electric cooker according to claim 7, is characterized in that, is also connected with the 3rd electric capacity between described coil panel first end and the second end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682707.6U CN203617892U (en) | 2013-10-31 | 2013-10-31 | Driving and control device used for coil panel of electric cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682707.6U CN203617892U (en) | 2013-10-31 | 2013-10-31 | Driving and control device used for coil panel of electric cooker |
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| Publication Number | Publication Date |
|---|---|
| CN203617892U true CN203617892U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320682707.6U Expired - Fee Related CN203617892U (en) | 2013-10-31 | 2013-10-31 | Driving and control device used for coil panel of electric cooker |
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| CN (1) | CN203617892U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245526A (en) * | 2018-09-21 | 2019-01-18 | 深圳市道通智能航空技术有限公司 | A kind of power supply circuit and electronic equipment |
| CN109387296A (en) * | 2018-10-29 | 2019-02-26 | 许继集团有限公司 | A kind of temperature sensing circuit |
-
2013
- 2013-10-31 CN CN201320682707.6U patent/CN203617892U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245526A (en) * | 2018-09-21 | 2019-01-18 | 深圳市道通智能航空技术有限公司 | A kind of power supply circuit and electronic equipment |
| CN109245526B (en) * | 2018-09-21 | 2024-04-12 | 深圳市道通智能航空技术股份有限公司 | Power supply circuit and electronic equipment |
| CN109387296A (en) * | 2018-10-29 | 2019-02-26 | 许继集团有限公司 | A kind of temperature sensing circuit |
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| Date | Code | Title | Description |
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| 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: 20140528 Termination date: 20201031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |