CN204613806U - Power control circuit and heating arrangement - Google Patents
Power control circuit and heating arrangement Download PDFInfo
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- CN204613806U CN204613806U CN201520288254.8U CN201520288254U CN204613806U CN 204613806 U CN204613806 U CN 204613806U CN 201520288254 U CN201520288254 U CN 201520288254U CN 204613806 U CN204613806 U CN 204613806U
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Abstract
The utility model provides a kind of power control circuit and heating arrangement, and wherein, power control circuit comprises: power module, comprises overcurrent protection electric capacity, and power module is used for incoming transport power supply signal; Zero passage detection module, one end of zero passage detection module is connected to power module, and zero passage detection module is used for carrying out zero passage detection to ac supply signal; Control module, the first end of control module is connected to the input end of zero passage detection module, second end of control module is connected to the output terminal of zero passage detection module, for the signal values of zero moment of the zero-signal and correspondence of determining ac supply signal, to generate corresponding power control wave according to zero-signal and signal values of zero moment; Load driver module, comprises load unit, and load driver module is connected to the 3rd end of control module, for obtaining power control wave, with the power of control load unit.By the utility model scheme, achieve the technique effect that heating arrangement is general under global voltage.
Description
Technical field
The utility model relates to household electrical appliance technical field, in particular to a kind of power control circuit and a kind of heating arrangement.
Background technology
At present, heating arrangement in correlation technique all can change with the change of input voltage, namely the power of heating arrangement is unstable, particularly at electric cooker, heating arrangement in the cooking apparatus such as electric pressure cooking saucepan is when heating, when the overtension of input heating arrangement, then the power of heating arrangement is just larger, electric cooker, food in the cooking apparatus such as electric pressure cooking saucepan will make food overflow owing to seething with excitement violent, when the brownout of input heating arrangement, then the power of heating arrangement is just smaller, this reduces the mouthfeel of the food cooked, and the heating arrangement in correlation technique can not realize the general of global voltage.
Therefore, how effectively to solve the problem of the power instability of heating arrangement, and realize heating arrangement generally can become technical matters urgently to be resolved hurrily under global voltage.
Utility model content
The utility model is intended at least to solve one of technical matters existed in above-mentioned prior art or correlation technique.
For this reason, the purpose of this utility model be to propose a kind of can the power control circuit of general multiple voltage and a kind of heating arrangement.
For achieving the above object, according to an embodiment of the present utility model, propose a kind of power control circuit, comprising: power module, comprise overcurrent protection electric capacity, described power module is used for incoming transport power supply signal; Zero passage detection module, one end of described zero passage detection module is connected to described power module, and described zero passage detection module is used for carrying out zero passage detection to described ac supply signal; Control module, the first end of described control module is connected to the input end of described zero passage detection module, second end of described control module is connected to the output terminal of described zero passage detection module, for the signal values of zero moment of the zero-signal and correspondence of determining described ac supply signal, to generate corresponding power control wave according to described zero-signal and described signal values of zero moment; Load driver module, comprises load unit, and described load driver module is connected to the 3rd end of described control module, for obtaining described power control wave, to control the power of described load unit.
According to the power control circuit of embodiment of the present utility model, by connecting power module, zero passage detection module, control module and load driver module successively, achieve the power invariability of heating arrangement, thus the power avoiding heating arrangement changes along with the change of the voltage of ac supply signal, makes heating arrangement can use under global voltage simultaneously.
Particularly, when the voltage of ac supply signal raises, reduce the dutycycle of power control wave, thus the ON time of minimizing heating arrangement is to make the power invariability of heating arrangement, when the voltage of ac supply signal reduces, the dutycycle of increasing power control wave, thus the ON time of increase heating arrangement is to make the power invariability of heating arrangement, therefore, achieved the power invariability of heating arrangement by the dutycycle of regulating power control wave, heating arrangement can be used under the whole world.
In addition, according to the power control circuit of the utility model above-described embodiment, following additional technical characteristic can also be had:
According to an embodiment of the present utility model, described zero passage detection module comprises the first diode and the first thyristor that are connected in series, wherein, the anode of described first diode is connected to described power module, the negative electrode of described first diode is connected to the base stage of described first thyristor, and the collector of described first thyristor is connected to a D.C. regulated power supply by pull-up resistor.
According to the power control circuit of embodiment of the present utility model, by arranging the first diode and the first thyristor, effectively ensure that the accuracy of zero passage detection module when carrying out zero passage detection to ac supply signal, thus contact when pilot relay opens and cuts out exactly is all at zero-point voltage, and then extend the serviceable life of relay.
According to an embodiment of the present utility model, described control module also comprises: sampling unit, comprise and be connected in series in the first resistance between described zero passage detection module and described ground wire and the second resistance, the common port of described first resistance and described second resistance is as the first common port, and described first common port is connected to the first end of described control module.
According to an embodiment of the present utility model, described sampling unit also comprises: be connected in series in the second diode between described zero cross detection circuit and described first resistance and the 3rd resistance, wherein, the anode of described second diode is connected to the negative electrode of described first diode, and the negative electrode of described second diode is connected to described 3rd resistance.
According to an embodiment of the present utility model, the common port of described first resistance and described 3rd resistance is as the second common port, and described sampling unit also comprises: the 4th resistance, is connected between a direct-flow voltage regulation source and described second common port; First electrochemical capacitor, is connected between described second common port and ground wire; The second electrochemical capacitor be connected in parallel and protection electric capacity, be connected between described first common port and ground wire.
According to the power control circuit of embodiment of the present utility model, by arranging the first resistance, the second resistance, the second diode, the 3rd resistance and the 4th resistance in sampling unit, and pass through the voltage division processing of four resistance, sampling unit is made to have current-limiting function, thus power control wave can be obtained exactly, and then ensure that the reliability of power control circuit.
Wherein, be in circuit reliability and consider, divider resistance can increase electrochemical capacitor and shunt capacitance to avoid ripple current isopulse noise on the impact of power control wave.
According to an embodiment of the present utility model, described load driver module comprises: load unit switch, and described load unit is connected in series between described power module and ground wire; Driving switch, comprise the relay and the second thyristor that are connected in series, described relay is for controlling the open and-shut mode of described switch, and one end of described relay is connected to direct-flow voltage regulation source, and the other end of described relay is connected to the collector of described second thyristor.
According to the power control circuit of embodiment of the present utility model, be connected with the second Thyristors in series by arranging relay, ensure that the power invariability of load driver module, wherein, the shutoff of relay and conducting determine shutoff and the conducting of switch, and certain driving switch also can comprise controllable silicon or other switching devices.
According to an embodiment of the present utility model, the 3rd diode is connected with between described second thyristor and described direct-flow voltage regulation source, wherein, the anode of described 3rd diode is connected to the collector of described second thyristor, and the negative electrode of described 3rd diode is connected to described direct-flow voltage regulation source.
According to the power control circuit of embodiment of the present utility model, by being provided with the 3rd diode between the second thyristor and direct-flow voltage regulation source, can ensureing that relay can normal turn-off and conducting, thus improving the reliability of power control circuit.
According to an embodiment of the present utility model, described driving switch also comprises: the 5th resistance, is connected between described second thyristor and described ground wire.
According to the power control circuit of embodiment of the present utility model, by being provided with the 5th resistance between the second thyristor and ground wire, thus ensure that the reliability of driving switch.
According to an embodiment of the present utility model, described power module comprises: rectification filtering module, comprises the voltage regulation resistance between two output terminals being connected in described ac supply signal in parallel and electric capacity of voltage regulation; Fuse, is connected between described ac supply signal and described rectification filtering module.
According to the power control circuit of embodiment of the present utility model; by arranging current rectifying and wave filtering circuit between two output terminals of ac supply signal; the undesired signal in ac supply signal can be absorbed; thus ensure that the stability of ac supply signal; in addition; by arranging fuse between ac supply signal and rectification filtering module, effectively can protect power control circuit, thus ensure that the reliability of circuit.
According to the embodiment of second aspect of the present utility model, propose a kind of heating arrangement, comprising: the power control circuit as described in above-mentioned any one technical scheme.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the electrical block diagram of the power control circuit according to embodiment of the present utility model,
Wherein, the corresponding relation in Fig. 1 between Reference numeral and component names is:
1 power control circuit, 11 power modules, 111 rectification filtering modules, 112 fuses, 113 overcurrent protection electric capacity, 12 zero passage detection modules, 13 control modules, 131 sampling units, 14 load driver modules, 141 load units, 142 driving switchs.
Embodiment
In order to more clearly understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection domain of the present utility model is not by the restriction of following public specific embodiment.
As shown in Figure 1, the utility model proposes a kind of power control circuit 1, comprising: power module 11, comprise overcurrent protection electric capacity, described power module is used for incoming transport power supply signal; Zero passage detection module 12, one end of described zero passage detection module 12 is connected to described power module 11, and described zero passage detection module 12 is for carrying out zero passage detection to described ac supply signal; Control module 13, the first end of described control module 13 is connected to the input end of described zero passage detection module 12, second end of described control module 13 is connected to the output terminal of described zero passage detection module 12, for the signal values of zero moment of the zero-signal and correspondence of determining described ac supply signal, to generate corresponding power control wave according to described zero-signal and described signal values of zero moment; Load driver module 14, comprises load unit 141, and described load driver module 14 is connected to the 3rd end of described control module 13, for obtaining described power control wave, to control the power of described load unit 141.
According to the power control circuit 1 of embodiment of the present utility model, by connecting power module 11, zero passage detection module 12, control module 13 and load driver module 14 successively, achieve the power invariability of heating arrangement, thus the power avoiding heating arrangement changes along with the change of the voltage of ac supply signal, makes heating arrangement can use under global voltage simultaneously.
Particularly, when the voltage of ac supply signal raises, reduce the dutycycle of power control wave, thus the ON time of minimizing heating arrangement is to make the power invariability of heating arrangement, when the voltage of ac supply signal reduces, the dutycycle of increasing power control wave, thus the ON time of increase heating arrangement is to make the power invariability of heating arrangement, therefore, achieved the power invariability of heating arrangement by the dutycycle of regulating power control wave, heating arrangement can be used under the whole world.
In addition, according to the power control circuit 1 of the utility model above-described embodiment, following additional technical characteristic can also be had:
According to an embodiment of the present utility model, described zero passage detection module 12 comprises the first diode and the first thyristor that are connected in series, wherein, the anode of described first diode is connected to described power module 11, the negative electrode of described first diode is connected to the base stage of described first thyristor, and the collector of described first thyristor is connected to a D.C. regulated power supply by pull-up resistor.
According to the power control circuit 1 of embodiment of the present utility model, described zero passage detection module comprises the first diode and the first thyristor that are connected in series, effectively ensure that the accuracy of zero passage detection module 12 when carrying out zero passage detection to ac supply signal, thus contact when pilot relay opens and cuts out exactly is all at zero-point voltage, and then extend the serviceable life of relay.
According to an embodiment of the present utility model, described control module 13 also comprises: sampling unit 131, comprise and be connected in series in the first resistance between described zero passage detection module 12 and described ground wire and the second resistance, the common port of described first resistance and described second resistance is as the first common port, and described first common port is connected to the first end of described control module 13.
According to an embodiment of the present utility model, described sampling unit 131 also comprises: be connected in series in the second diode between described zero cross detection circuit and described first resistance and the 3rd resistance, wherein, the anode of described second diode is connected to the negative electrode of described first diode, and the negative electrode of described second diode is connected to described 3rd resistance.
According to an embodiment of the present utility model, the common port of described first resistance and described 3rd resistance is as the second common port, and described sampling unit 131 also comprises: the 4th resistance, is connected between a direct-flow voltage regulation source and described second common port; First electrochemical capacitor, is connected between described second common port and ground wire; The second electrochemical capacitor be connected in parallel and protection electric capacity, be connected between described first common port and ground wire.
According to the power control circuit 1 of embodiment of the present utility model, by arranging the first resistance, the second resistance, the second diode, the 3rd resistance and the 4th resistance in sampling unit 131, and pass through the voltage division processing of four resistance, sampling unit 131 is made to have current-limiting function, thus power control wave can be obtained exactly, and then ensure that the reliability of power control circuit 1.
Wherein, be in circuit reliability and consider, divider resistance can increase electrochemical capacitor and shunt capacitance to avoid ripple current isopulse noise on the impact of power control wave.
According to an embodiment of the present utility model, described load driver module 14 comprises: load unit switch, and described load unit 141 is connected in series between described power module 11 and ground wire; Driving switch 142, comprise the relay and the second thyristor that are connected in series, described relay is for controlling the open and-shut mode of described switch, and one end of described relay is connected to direct-flow voltage regulation source, and the other end of described relay is connected to the collector of described second thyristor.
According to the power control circuit 1 of embodiment of the present utility model, be connected with the second Thyristors in series by arranging relay, ensure that the power invariability of load driver module 14, wherein, the shutoff of relay and conducting determine shutoff and the conducting of switch, and certain driving switch 142 also can comprise controllable silicon or other switching devices.
According to an embodiment of the present utility model, the 3rd diode is connected with between described second thyristor and described direct-flow voltage regulation source, wherein, the anode of described 3rd diode is connected to the collector of described second thyristor, and the negative electrode of described 3rd diode is connected to described direct-flow voltage regulation source.
According to the power control circuit 1 of embodiment of the present utility model, by being provided with the 3rd diode between the second thyristor and direct-flow voltage regulation source, can ensureing that relay can normal turn-off and conducting, thus improving the reliability of power control circuit 1.
According to an embodiment of the present utility model, described driving switch 142 also comprises: the 5th resistance, is connected between described second thyristor and described ground wire.
According to the power control circuit 1 of embodiment of the present utility model, by being provided with the 5th resistance between the second thyristor and ground wire, thus ensure that the reliability of driving switch 142.
According to an embodiment of the present utility model, described power module 11 comprises: rectification filtering module 111, comprises the voltage regulation resistance between two output terminals being connected in described ac supply signal in parallel and electric capacity of voltage regulation; Fuse 112, is connected between described ac supply signal and described rectification filtering module 111.
According to the power control circuit 1 of embodiment of the present utility model; by arranging current rectifying and wave filtering circuit between two output terminals of ac supply signal; the undesired signal in ac supply signal can be absorbed; thus ensure that the stability of ac supply signal; in addition; by arranging fuse 112 between ac supply signal and rectification filtering module 111, can effectively protect power control circuit 1, thus ensure that the reliability of circuit.
According to the embodiment of second aspect of the present utility model, propose a kind of heating arrangement, comprising: the power control circuit as described in above-mentioned any one technical scheme.
More than be described with reference to the accompanying drawings the technical solution of the utility model, considered the problem of the power instability of the heating arrangement proposed in correlation technique, and heating arrangement can not be general under global voltage.Therefore, the utility model proposes a kind of new power control circuit and a kind of heating arrangement, effectively can solve the problem of the power instability of heating arrangement, and realize heating arrangement can be general under global voltage.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a power control circuit, is characterized in that, comprising:
Power module, comprises overcurrent protection electric capacity, and described power module is used for incoming transport power supply signal;
Zero passage detection module, one end of described zero passage detection module is connected to described power module, and described zero passage detection module is used for carrying out zero passage detection to described ac supply signal;
Control module, the first end of described control module is connected to the input end of described zero passage detection module, second end of described control module is connected to the output terminal of described zero passage detection module, for the signal values of zero moment of the zero-signal and correspondence of determining described ac supply signal, to generate corresponding power control wave according to described zero-signal and described signal values of zero moment;
Load driver module, comprises load unit, and described load driver module is connected to the 3rd end of described control module, for obtaining described power control wave, to control the power of described load unit.
2. power control circuit according to claim 1, it is characterized in that, described zero passage detection module comprises the first diode and the first thyristor that are connected in series, wherein, the anode of described first diode is connected to described power module, the negative electrode of described first diode is connected to the base stage of described first thyristor, and the collector of described first thyristor is connected to a D.C. regulated power supply by pull-up resistor.
3. power control circuit according to claim 2, is characterized in that, described control module also comprises:
Sampling unit, comprise and be connected in series in the first resistance between described zero passage detection module and ground wire and the second resistance, the common port of described first resistance and described second resistance is as the first common port, and described first common port is connected to the first end of described control module.
4. power control circuit according to claim 3, is characterized in that, described sampling unit also comprises:
Be connected in series in the second diode between described zero cross detection circuit and described first resistance and the 3rd resistance, wherein, the anode of described second diode is connected to the negative electrode of described first diode, and the negative electrode of described second diode is connected to described 3rd resistance.
5. power control circuit according to claim 4, is characterized in that, the common port of described first resistance and described 3rd resistance is as the second common port, and described sampling unit also comprises:
4th resistance, is connected between a direct-flow voltage regulation source and described second common port;
First electrochemical capacitor, is connected between described second common port and ground wire;
The second electrochemical capacitor be connected in parallel and protection electric capacity, be connected between described first common port and ground wire.
6. power control circuit according to claim 1, is characterized in that, described load driver module comprises:
Load unit switch, and described load unit is connected in series between described power module and ground wire;
Driving switch, comprise the relay and the second thyristor that are connected in series, described relay is for controlling the open and-shut mode of described switch, and one end of described relay is connected to direct-flow voltage regulation source, and the other end of described relay is connected to the collector of described second thyristor.
7. power control circuit according to claim 6, it is characterized in that, the 3rd diode is connected with between described second thyristor and described direct-flow voltage regulation source, wherein, the anode of described 3rd diode is connected to the collector of described second thyristor, and the negative electrode of described 3rd diode is connected to described direct-flow voltage regulation source.
8. power control circuit according to claim 6, is characterized in that, described driving switch also comprises:
5th resistance, is connected between described second thyristor and described ground wire.
9. power control circuit according to any one of claim 1 to 8, is characterized in that, described power module comprises:
Rectification filtering module, comprises the voltage regulation resistance between two output terminals being connected in described ac supply signal in parallel and electric capacity of voltage regulation;
Fuse, is connected between described ac supply signal and described rectification filtering module.
10. a heating arrangement, is characterized in that, comprising: power control circuit as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288254.8U CN204613806U (en) | 2015-05-05 | 2015-05-05 | Power control circuit and heating arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288254.8U CN204613806U (en) | 2015-05-05 | 2015-05-05 | Power control circuit and heating arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN204613806U true CN204613806U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520288254.8U Expired - Fee Related CN204613806U (en) | 2015-05-05 | 2015-05-05 | Power control circuit and heating arrangement |
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| Country | Link |
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| CN (1) | CN204613806U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107581935A (en) * | 2016-07-08 | 2018-01-16 | 广东美的生活电器制造有限公司 | Heating control circuit and wall-breaking machine |
| CN108828991A (en) * | 2018-07-26 | 2018-11-16 | 苏州力生美半导体有限公司 | A kind of universal self-adaption constant power heater circuit and its device |
| CN112105106A (en) * | 2020-08-14 | 2020-12-18 | 中山市合硕高品电器有限公司 | Control method and device of induction cooker |
-
2015
- 2015-05-05 CN CN201520288254.8U patent/CN204613806U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107581935A (en) * | 2016-07-08 | 2018-01-16 | 广东美的生活电器制造有限公司 | Heating control circuit and wall-breaking machine |
| CN107581935B (en) * | 2016-07-08 | 2023-10-27 | 广东美的生活电器制造有限公司 | Heating control circuit and broken wall machine |
| CN108828991A (en) * | 2018-07-26 | 2018-11-16 | 苏州力生美半导体有限公司 | A kind of universal self-adaption constant power heater circuit and its device |
| CN112105106A (en) * | 2020-08-14 | 2020-12-18 | 中山市合硕高品电器有限公司 | Control method and device of induction cooker |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20200505 |