CN205657860U - Take IGBT protection device's IH electric heat pot - Google Patents
Take IGBT protection device's IH electric heat pot Download PDFInfo
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- CN205657860U CN205657860U CN201620360261.9U CN201620360261U CN205657860U CN 205657860 U CN205657860 U CN 205657860U CN 201620360261 U CN201620360261 U CN 201620360261U CN 205657860 U CN205657860 U CN 205657860U
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- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 239000000853 adhesive Substances 0.000 claims description 16
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- 230000005611 electricity Effects 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 25
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model provides a take IGBT protection device's IH electric heat pot, relates to a IH electric heat pot. The various computermatic IH electric heat pots of selling in the existing market, easy when the IGBT control chip initialization, the condition that makes IGBT damage because of IGBT control chip's maloperation takes place. The utility model discloses a connect the control circuit of IGBT's heating major loop, the work of controlled heating major loop, the switching power supply who supplies power for control circuit, control circuit include IGBT, the IGBT drive circuit who links to each other with IGBT, link to each other with the controller of control IGBT break -make with IGBT drive circuit, its characterized in that: still include the IGBT protection circuit, the IGBT protection circuit including being used for control IGBT before the IGBT control chip initialization finishes to be in shutoff and/or switching -off state's protection switch. This technical scheme increases the protection circuit, when the IGBT control chip maloperation, effectively protects IGBT.
Description
Technical field
This utility model relates to a kind of IH electric food warmer, the IH electric food warmer of a kind of band IGBT protection device.
Background technology
The various computermatic IH electric food warmer sold in the market, when being initially powered, first 220vAC input exports the low-voltages such as 18v, 5v for powering to components and parts such as IGBT control chip, audions after Switching Power Supply.Then IGBT control chip initializes, and drives the pin of IGBT to be controlled.The function singlechip chip selected by user and IGBT control chip communication, cut-off Electromagnetic Heating process by what IGBT control chip controlled IGBT.
The IGBT drive scheme used at present, exists before IGBT control chip power-up initializing completes, the problem that IGBT misleads and damages IGBT, rectifier bridge.Owing to the audion voltage of 220vAC input rear drive IGBT reaches rated value, but now IGBT control chip is not fully complete initialization, and the pin controlling IGBT is uncontrollable, thus IGBT damaged condition occurs.
It addition, after IGBT control chip damages due to other reasons, IGBT damage, circuit also can be occurred to damage problem because chip is uncontrollable.
When IGBT control chip and display panel chip communication fault or be interfered, it is also possible to cause IGBT to mislead.
Utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition is to carry out prior art improving and improving, it is provided that the IH electric food warmer of a kind of band IGBT protection device, to reach the purpose avoiding IGBT to damage.To this end, this utility model takes techniques below scheme.
A kind of IH electric food warmer of band IGBT protection device; including connecting the heating major loop of IGBT, controlling the control circuit that heating major loop works, the Switching Power Supply powered for control circuit, described control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller to control IGBT break-make with IGBT drive circuit；It is characterized in that: also include IGBT protection circuit, described IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch.The technical program increases protection circuit, makes IGBT be off and/or off state, when IGBT control chip maloperation, effectively protect IGBT before the initialization of IGBT control chip terminates；The shutoff of IGBT can realize by controlling gate pole; off state can realize, when off state, even if IGBT is in the conduction state by heating the modes such as the major loop separated, the heating major loop disconnection with power supply; IGBT drain electrode and emitter stage also no current process, can effectively protect IGBT.The IGBT control chip initialization end time can judge according to the communication correctness of setting time, IGBT control chip.When correctly being judged by communication, not only can avoid work maloperation just, the maloperation produced when the most also can avoid the damage of IGBT control chip, communication failure or be disturbed.
As improving further and supplementing technique scheme, this utility model also includes following additional technical feature.
Described protection switchs and includes the first protection switch, and the first described protection switch is connected with heating major loop, and it, before the initialization of IGBT control chip terminates, makes heating major loop be off.First protection switch is used for cutting off heating main circuit power supply, makes heating major loop be in off state, so that IGBT no current flows through; avoid damaging, though IGBT control chip maloperation, and IGBT is in the conduction state; IGBT drain electrode and transmitting interpolar also no current process, can effectively protect IGBT.
Described protection switch includes that the second protection switch, the second described protection switch are connected with IGBT drive circuit, and it, before the initialization of IGBT control chip terminates, makes IGBT be off state.Second protection switch, for controlling the gate pole of IGBT, makes IGBT be off state, even if IGBT control chip maloperation does not haves the generation damaging IGBT situation yet.
The second described protection switch is located between Switching Power Supply and IGBT drive circuit, or is located in IGBT drive circuit, or is located between IGBT drive circuit and the gate pole of IGBT.
Described protection switch includes that the first protection switch, the second protection switch, the first described protection switch are connected with heating major loop；The second described protection switch is connected with IGBT drive circuit.Protection switch is provided with the first protection switch, the second protection switch, and the first protection switch is connected with heating major loop, and for controlling to heat the break-make of major loop, the second protection switch is connected with control circuit；Two protection switch with the use of, further increase IGBT use safety, it is to avoid IGBT control chip maloperation causes the damage of IGBT.
Described protection switch is relay and/or controllable silicon.
Described controller includes that display control chip and described IGBT control chip, IGBT control chip communicate to connect with display control chip；Described protection switch is relay, and described display control chip is connected with relay coil the adhesive with control relay.Display control chip is connected with relay coil to be controlled the adhesive of one or more relay at IGBT control chip after correct by display control chip with display control chip communication；If IGBT control chip and display control chip communication are accurate, then can determine whether IGBT control chip initialize terminate, IGBT control chip is working properly, communication fault-free and noiseless；When, after IGBT control chip and display control chip communication accurately, display control chip controls the adhesive of relay so that when IGBT control chip just starts, IGBT control chip is when damaging and IGBT control chip communication failure or all protect IGBT when being interfered.
Described controller includes that display control chip and described IGBT control chip, IGBT control chip communicate to connect with display control chip；The first described protection switch is the first relay；The second described protection switch is the second relay；The contact of the first relay is located between mains electricity input end and heating major loop；The contact of the second relay is located between Switching Power Supply and IGBT control chip and/or between Switching Power Supply and IGBT drive circuit.When display control chip communicates correctly with IGBT control chip, it is believed that IGBT control chip has been changed all the time, and IGBT control chip can normally work, and the problem that IGBT control chip communication is not normal and damages can be got rid of simultaneously.If the contact of the second relay is located between Switching Power Supply and IGBT control chip, when starting working, display control chip controls the second relay adhesive conducting, IGBT control chip powers on and starts to initialize, after communicating between display control chip with IGBT control chip correctly, display control chip controls the first relay adhesive conducting, makes heating major loop turn on, after IGBT control chip damages, can directly cut off the electricity supply the power supply to it with the second relay；After IGBT control chip communication is normal, then conducting heating major loop, control reliable.If the contact of the second relay is located between Switching Power Supply and IGBT drive circuit, when starting working, IGBT control chip powers on and starts to initialize, after communicating between display control chip with IGBT control chip correctly, display control chip controls the second relay and the first relay adhesive conducting, makes IGBT conducting and heating major loop conducting；After IGBT control chip damages, directly can turn off IGBT with the second relay and/or the first relay disconnects heating major loop；Duplicate protection, controls reliable.
The outfan of described Switching Power Supply includes the first low-voltage output and the second low-voltage output, the output voltage of the first described low-voltage output is higher than the output voltage of the second low-voltage output, first low-voltage output is connected with IGBT drive circuit, second low-voltage output is connected with display control chip and IGBT control chip respectively or the second low-voltage output is connected with display control chip, and display control chip is connected to be powered for IGBT control chip by display control chip with IGBT control chip.
Protection switch driving circuit it is provided with between described display control chip and relay; described protection switch driving circuit includes audion; the pin of display control chip is connected with the base stage of audion, the colelctor electrode of audion, the outfan of emitter stage correspondence connecting valve power supply and relay coil.When display control chip needs to control the actuating of relay, by changing the voltage to transistor base, make triode ON or shutoff, it is achieved power supply or the power-off to relay coil.
Beneficial effect:
1, the technical program increases protection circuit, make IGBT be off and/or off state before the initialization of IGBT control chip terminates, when IGBT control chip maloperation, effectively protect IGBT.
2, for cutting off the first protection switch of heating main circuit power, even if IGBT control chip maloperation, in the case of making IGBT in the conduction state, IGBT drains and launches interpolar also no current process, can effectively protect IGBT.
3, for controlling the second protection switch of the gate pole of IGBT, IGBT is made to be off state, even if IGBT control chip maloperation does not haves the generation damaging IGBT situation yet.
4, first protection switch, second protection switch with the use of, further increase IGBT use safety, it is to avoid IGBT control chip maloperation causes the damage of IGBT.
5, IGBT control chip communicates to connect with display control chip；The adhesive of one or more relay is controlled after correct by display control chip with display control chip communication at IGBT control chip; make when IGBT control chip just starts, IGBT control chip is when damaging and IGBT control chip communication failure or all protect IGBT when being interfered, it is to avoid IGBT control chip maloperation causes the damage to IGBT.
6, when the contact of the second relay is located between Switching Power Supply and IGBT control chip, after IGBT control chip damages, can directly cut off the electricity supply the power supply to it with the second relay, operation is the most reliably.
7, when the contact of the second relay is located between Switching Power Supply and IGBT drive circuit, directly IGBT is turned off with the second relay, when it is used in combination with the first relay, duplicate protection, control reliable.
Accompanying drawing explanation
Fig. 1 (a) is this utility model one structural representation.
Fig. 1 (b) is this utility model the second structural representation.
Fig. 2 is the third structural representation of this utility model.
Fig. 3 (a) is the 4th kind of structural representation of this utility model.
Fig. 3 (b) is the 5th kind of structural representation of this utility model.
Fig. 3 (c) is the 6th kind of structural representation of this utility model.
Fig. 4 is the 7th kind of structural representation of this utility model.
Fig. 5 is eight kinds of structural representations of this utility model.
Fig. 6 (a) is the 9th kind of structural representation of this utility model.
Fig. 6 (b) is the tenth kind of structural representation of this utility model.
Fig. 6 (c) is the 11st kind of structural representation of this utility model.
Fig. 7 is protection switch driving circuit structural representation of the present utility model.
Fig. 8 is electrical block diagram of the present utility model.
Detailed description of the invention
Below in conjunction with Figure of description, the technical solution of the utility model is described in further detail.
Embodiment one:
The IH electric food warmer of a kind of band IGBT protection device that the present invention provides; described IH electric food warmer can be IH electric cooker, IH electric pressure pot etc.; the IH electric food warmer of described band IGBT protection device includes connecting the heating major loop of IGBT, controlling the control circuit of heating major loop work, the Switching Power Supply powered for control circuit, IGBT protection circuit, and control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller with control IGBT break-make with IGBT drive circuit；IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch.As shown in Fig. 1 (a); protection switch is connected with heating major loop; control IGBT before the initialization of IGBT control chip terminates and be in off state; off state can realize by heating the modes such as the major loop separated, the heating major loop disconnection with power supply; when off state; even if IGBT is in the conduction state, IGBT drain electrode and emitter stage also no current process, can effectively protect IGBT.As shown in Fig. 1 (b), the shutoff of IGBT can realize by controlling gate pole, example: protection switch is connected with IGBT drive circuit, controls IGBT before the initialization of IGBT control chip terminates and is off state.The IGBT control chip initialization end time correctly can judge according to setting time, IGBT control chip communication.When correctly being judged by communication, not only can avoid work maloperation just, maloperation when the most also can avoid at the damage of IGBT control chip, communication failure or be disturbed.
Embodiment two:
As shown in Figure 2; the technical program IH electric food warmer includes connecting the heating major loop of IGBT, controlling the control circuit of heating major loop work, the Switching Power Supply powered for control circuit, IGBT protection circuit, and control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller with control IGBT break-make with IGBT drive circuit；IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch; protection switch includes the first protection switch; first protection switch is connected with heating major loop; it, before the initialization of IGBT control chip terminates, makes heating major loop be off.First protection switch cutoff heating main circuit power, makes heating major loop be in off state, so that IGBT no current flows through; avoid damaging, even if IGBT control chip maloperation, make IGBT in the conduction state; IGBT drain electrode and transmitting interpolar also no current process, can effectively protect IGBT.
Embodiment three:
Such as Fig. 3 (a), 3(b), 3(c) shown in; the technical program IH electric food warmer includes connecting the heating major loop of IGBT, controlling the control circuit of heating major loop work, the Switching Power Supply powered for control circuit, IGBT protection circuit, and control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller with control IGBT break-make with IGBT drive circuit；IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch; protection switch includes the second protection switch; second protection switch is connected with IGBT drive circuit; it, before the initialization of IGBT control chip terminates, makes IGBT be off state.Second protection switch, for controlling the gate pole of IGBT, makes IGBT be off state, even if IGBT control chip maloperation does not haves the generation damaging IGBT situation yet.
Wherein, the second protection switch can be located between Switching Power Supply and IGBT drive circuit, as shown in Fig. 3 (a)；Or be located in IGBT drive circuit, as shown in Figure 3 (b)；Or be located between IGBT drive circuit and the gate pole of IGBT, as shown in Figure 3 (c).
Embodiment four:
As shown in Figure 4; the technical program IH electric food warmer includes connecting the heating major loop of IGBT, controlling the control circuit of heating major loop work, the Switching Power Supply powered for control circuit, IGBT protection circuit, and control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller with control IGBT break-make with IGBT drive circuit；IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch, protection switch include first protection switch, second protection switch, first protection switch with heating major loop be connected；Second protection switch is connected with IGBT drive circuit.Protection switch is provided with the first protection switch, the second protection switch, and the first protection switch is connected with heating major loop, and for controlling to heat the break-make of major loop, the second protection switch is connected with control circuit；Two protection switch with the use of, further increase IGBT use safety, it is to avoid IGBT control chip maloperation causes the damage of IGBT.
Embodiment five:
As shown in Figure 5: IH electric food warmer of the present invention includes connecting the heating major loop of IGBT, controlling the control circuit of heating major loop work, the Switching Power Supply powered for control circuit, IGBT protection circuit, and control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller with control IGBT break-make with IGBT drive circuit；IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch.Wherein, controller includes that display control chip and IGBT control chip, IGBT control chip communicate to connect with display control chip；Protection switch is for relay, and display control chip is connected with relay coil the adhesive with control relay.Display control chip is connected with relay coil to be controlled the adhesive of one or more relay at IGBT control chip after correct by display control chip with display control chip communication；If IGBT control chip and display control chip communication are accurate, then can determine whether IGBT control chip initialize terminate, IGBT control chip is working properly, communication fault-free and noiseless；When after IGBT control chip with display control chip communication accurately; display control chip controls the adhesive of relay again; make when IGBT control chip just starts, IGBT control chip is when damaging and IGBT control chip communication failure or all protect IGBT when being interfered, it is to avoid IGBT misleads.
Embodiment six:
As shown in Fig. 6 (a), Fig. 6 (b); the technical program IH electric food warmer includes connecting the heating major loop of IGBT, controlling the control circuit of heating major loop work, the Switching Power Supply powered for control circuit, IGBT protection circuit, and control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller with control IGBT break-make with IGBT drive circuit；IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch; protection switch includes the first protection switch, the second protection switch; controller includes that display control chip and IGBT control chip, IGBT control chip communicate to connect with display control chip；Wherein, the first protection switch is the first relay；Second protection switch is the second relay；The contact of the first relay is located between mains electricity input end and heating major loop；The contact of the second relay is located between Switching Power Supply and IGBT control chip and/or between Switching Power Supply and IGBT drive circuit.When display control chip communicates correctly with IGBT control chip, it is believed that IGBT control chip has been changed all the time, and IGBT control chip can normally work, and can substantially get rid of the problem that IGBT control chip communication is not normal and damages.
Such as Fig. 6 (a), the contact of the second relay is located between Switching Power Supply and IGBT control chip, when starting working, display control chip controls the second relay adhesive conducting, and IGBT control chip powers on and starts to initialize, after communicating between display control chip with IGBT control chip correctly, display control chip controls the first relay adhesive conducting, make heating major loop turn on, after IGBT control chip damages, can directly cut off the electricity supply the power supply to it with the second relay.If IGBT control chip communication is normal, conducting heating major loop the most again, control reliable.
If the contact such as Fig. 6 (b) the second relay is located between Switching Power Supply and IGBT drive circuit, when starting working, IGBT control chip powers on and starts to initialize, after communicating between display control chip with IGBT control chip correctly, display control chip controls the second relay and the first relay adhesive conducting, makes IGBT conducting and heating major loop conducting；After IGBT control chip damages, directly can turn off IGBT with the second relay and/or the first relay disconnects heating major loop；Duplicate protection, controls reliable.
For convenience of power supply, the outfan of Switching Power Supply includes the first low-voltage output and the second low-voltage output, the output voltage of the first low-voltage output is higher than the output voltage of the second low-voltage output, first low-voltage output is connected with IGBT drive circuit, and the second low-voltage output is connected with display control chip and IGBT control chip respectively；
IGBT control chip also can be powered by display control chip, as shown in Fig. 6 (c), second low-voltage output of Switching Power Supply is connected with display control chip, and display control chip is connected to be powered for IGBT control chip by display control chip with IGBT control chip.
The display control chip control to relay for convenience; protection switch driving circuit it is provided with between display control chip and relay; as shown in Figure 7; protection switch driving circuit includes audion; the pin of display control chip is connected with base stage b of audion, the colelctor electrode c of audion, the outfan of emitter e correspondence connecting valve power supply and relay coil.When display control chip needs to control the actuating of relay, by changing the voltage of transistor base b, make triode ON or shutoff, it is achieved power supply or the power-off to relay coil.
As a example by the contact of the second relay is located between Switching Power Supply and IGBT control chip, as shown in Figure 8, in fig. 8, U3 is IGBT control chip to its physical circuit；U1 is display control chip; U1 is that display control chip is connected by the coil of protection switch driving circuit and the first relay, the second relay; the main contacts of the first relay is RY2B; it is between mains electricity input end and heating main circuit; wherein, heating main circuit is provided with Transformer Rectifier circuit, filter circuit；OUT1, OUT2 end of heating main circuit is provided with and adds hot plate.Second relay is between Switching Power Supply and IGBT control chip, and the main contacts of the second relay is connected with the power input of IGBT control chip.When starting working, display control chip controls the second relay adhesive conducting, IGBT control chip powers on and starts to initialize, after communicating between display control chip with IGBT control chip correctly, display control chip controls the first relay adhesive conducting, make heating major loop turn on, after IGBT control chip damages, can directly cut off the electricity supply the power supply to it with the second relay.If IGBT control chip communication is normal, conducting heating major loop the most again, control reliable.
The IH electric food warmer of a kind of band IGBT protection device illustrated above is specific embodiment of the utility model; this utility model substantive distinguishing features and progress are embodied; can be according to actual use needs; under enlightenment of the present utility model; it is carried out the equivalent modifications of the aspect such as shape, structure, all at the row of protection domain of this programme.
Claims (10)
1. the IH electric food warmer of a band IGBT protection device; including connecting the heating major loop of IGBT, controlling the control circuit that heating major loop works, the Switching Power Supply powered for control circuit, described control circuit includes IGBT, the IGBT drive circuit being connected with IGBT, be connected the controller to control IGBT break-make with IGBT drive circuit；It is characterized in that: also include IGBT protection circuit, described IGBT protection circuit include for control IGBT control chip initialize terminate before IGBT be off and/or off state protection switch.
The IH electric food warmer of a kind of band IGBT protection device the most according to claim 1; it is characterized in that: described protection switch includes the first protection switch; the first described protection switch is connected with heating major loop; it, before the initialization of IGBT control chip terminates, makes heating major loop be off.
The IH electric food warmer of a kind of band IGBT protection device the most according to claim 1; it is characterized in that: described protection switch includes the second protection switch; the second described protection switch is connected with IGBT drive circuit, and it, before the initialization of IGBT control chip terminates, makes IGBT be off state.
The IH electric food warmer of a kind of band IGBT protection device the most according to claim 3; it is characterized in that: the second described protection switch is located between Switching Power Supply and IGBT drive circuit; or be located in IGBT drive circuit, or it is located between IGBT drive circuit and the gate pole of IGBT.
The IH electric food warmer of a kind of band IGBT protection device the most according to claim 1, it is characterised in that: described protection switch includes that the first protection switch, the second protection switch, the first described protection switch are connected with heating major loop；The second described protection switch is connected with IGBT drive circuit.
6. according to the IH electric food warmer of a kind of band IGBT protection device described in claim 1-5 any claim, it is characterised in that: described protection switch is relay and/or controllable silicon.
7. according to the IH electric food warmer of a kind of band IGBT protection device described in claim 1-5 any claim, it is characterised in that: described controller includes that display control chip and described IGBT control chip, IGBT control chip communicate to connect with display control chip；Described protection switch is relay, and described display control chip is connected with relay coil the adhesive with control relay.
The IH electric food warmer of a kind of band IGBT protection device the most according to claim 5, it is characterised in that: described controller includes that display control chip and described IGBT control chip, IGBT control chip communicate to connect with display control chip；The first described protection switch is the first relay；The second described protection switch is the second relay；The contact of the first relay is located between mains electricity input end and heating major loop；The contact of the second relay is located between Switching Power Supply and IGBT control chip and/or between Switching Power Supply and IGBT drive circuit.
The IH electric food warmer of a kind of band IGBT protection device the most according to claim 7, it is characterized in that: the outfan of described Switching Power Supply includes the first low-voltage output and the second low-voltage output, the output voltage of the first described low-voltage output is higher than the output voltage of the second low-voltage output, first low-voltage output is connected with IGBT drive circuit, second low-voltage output is connected with display control chip and IGBT control chip respectively or the second low-voltage output is connected with display control chip, and display control chip is connected to be powered for IGBT control chip by display control chip with IGBT control chip.
The IH electric food warmer of a kind of band IGBT protection device the most according to claim 7; it is characterized in that: between described display control chip and relay, be provided with protection switch driving circuit; described protection switch driving circuit includes audion; the pin of display control chip is connected with the base stage of audion, the colelctor electrode of audion, the outfan of emitter stage correspondence connecting valve power supply and relay coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360261.9U CN205657860U (en) | 2016-04-26 | 2016-04-26 | Take IGBT protection device's IH electric heat pot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360261.9U CN205657860U (en) | 2016-04-26 | 2016-04-26 | Take IGBT protection device's IH electric heat pot |
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| Publication Number | Publication Date |
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| CN205657860U true CN205657860U (en) | 2016-10-19 |
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| CN201620360261.9U Active CN205657860U (en) | 2016-04-26 | 2016-04-26 | Take IGBT protection device's IH electric heat pot |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479613A (en) * | 2017-07-20 | 2017-12-15 | 浙江绍兴苏泊尔生活电器有限公司 | Electrifying protection circuit and induction cooker |
| CN108347238A (en) * | 2017-08-28 | 2018-07-31 | 九阳股份有限公司 | The switch controlled circuit of electromagnetic heater |
-
2016
- 2016-04-26 CN CN201620360261.9U patent/CN205657860U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479613A (en) * | 2017-07-20 | 2017-12-15 | 浙江绍兴苏泊尔生活电器有限公司 | Electrifying protection circuit and induction cooker |
| CN108347238A (en) * | 2017-08-28 | 2018-07-31 | 九阳股份有限公司 | The switch controlled circuit of electromagnetic heater |
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