CN204929302U - Induction heater and circuit - Google Patents
Induction heater and circuit Download PDFInfo
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- CN204929302U CN204929302U CN201520373010.XU CN201520373010U CN204929302U CN 204929302 U CN204929302 U CN 204929302U CN 201520373010 U CN201520373010 U CN 201520373010U CN 204929302 U CN204929302 U CN 204929302U
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Abstract
The utility model discloses an induction heater and circuit, this induction heating circuit includes: the first resonance unit that constitutes by a LC parallel branch and first power switch device, a control unit, the human -computer interaction unit, a drive unit, and synchronization unit, the human -computer interaction unit has power selecting arrangement, this induction heating circuit still includes: the first switch of at least one the 2nd LC parallel branch and the same quantity to and the 2nd the control unit, establish ties and constitute at least one series branch in at least one the 2nd LC parallel branch and first switch one -to -one ground, at least one series branch and a LC parallel branch are parallelly connected, the 2nd the control unit is connected with power selecting arrangement and first switch, in order to read power selecting arrangement's state and according to reading the first switch conduction of state control or end. This induction heater includes above -mentioned circuit. It can realize heating area automatic change along with power change.
Description
Technical field
The utility model relates to induction heating equipment and circuit, more particularly, relates to a kind of inductive heating circuit that can convert heating surface (area) (HS, and relates to the induction heating equipment adopting this inductive heating circuit.
Background technology
Electromagnetic induction heating, as a kind of new METAL HEATING PROCESS technology, with its flames of anger, environmental protection, safety, the advantage such as energy-conservation, is subject to consumers in general's favor day by day.There is following technological deficiency in current Portable electromagnetic oven on the market: 1, heating surface (area) (HS is fixing cannot convert, and this makes the pan adaptability of different size weak, and heating can be caused uneven, culinary art weak effect; 2, laser heating power bracket is little, is commonly 800 ~ 2000W (below 800W is interval mode of heating).
Summary of the invention
The purpose of this utility model is to provide a kind of induction heating equipment and circuit, to solve the above-mentioned at least one technological deficiency that existing electromagnetic induction heater exists.
The technical solution of the utility model is as follows:
A kind of inductive heating circuit, comprising: the first resonant element be made up of a LC parallel branch and the first device for power switching; First control unit and connected man-machine interaction unit; The output of the first control unit connects described first device for power switching by the first driver element, lock unit is connected between the input of the first control unit and a LC parallel branch, described man-machine interaction unit has power selection device, and described inductive heating circuit also comprises:
First switch of at least one the 2nd LC parallel branch and equal number, at least one the 2nd LC parallel branch described and the first switch at least one series arm in series correspondingly, at least one series arm described is in parallel with a described LC parallel branch; And
Second control unit, is connected with described power selection device and the first switch, to read the state of described power selection device and to control described first switch conduction or cut-off according to the described state read.
In above-mentioned inductive heating circuit, preferably, the state of described power selection device and some power one_to_one corresponding, power corresponding to described state is larger, and the quantity of the first switch of conducting is more.
In above-mentioned inductive heating circuit, preferably, described inductive heating circuit also comprises:
At least one second device for power switching, the series arm formed with described 2nd LC parallel branch and the first switch is connected, to form resonant element;
Second driver element, is connected between the output of the first control unit and the second device for power switching; And
With the second switch of the second device for power switching equal number, correspondence is connected in the loop of at least one the second device for power switching described, and control end is connected with the output of described second control unit, control second switch conducting or cut-off with the state of the power selection device read according to the second control unit.
In above-mentioned inductive heating circuit, preferably, the quantity of described second device for power switching is identical with the quantity of described 2nd LC parallel branch, and the second device for power switching is connected correspondingly with the 2nd LC parallel branch.
In above-mentioned inductive heating circuit, preferably, second switch is connected to the control loop of corresponding second device for power switching.
In above-mentioned inductive heating circuit, preferably, second switch is connected to the major loop of corresponding second device for power switching.
In above-mentioned inductive heating circuit, preferably, the first switch of corresponding 2nd LC parallel branch and the second device for power switching and the synchronous conducting of second switch or cut-off is connected to.
In above-mentioned inductive heating circuit, preferably, described second control unit and the first control unit are realized by same microprocessor.
A kind of induction heating equipment, comprise coil panel and inductive heating circuit, described inductive heating circuit adopts the inductive heating circuit described in above-mentioned any one, the first coil forming a described LC parallel branch is arranged at coil panel center, and the second coil forming the 2nd LC parallel branch is arranged at the periphery of described first coil.
In above-mentioned induction heating equipment, preferably, described coil panel is tabular, and described first coil and all second coils are plane setting.
In above-mentioned induction heating equipment, preferably, described coil panel has bottom and sidepiece, and described first coil is arranged at described bottom, and at least one second coil is arranged at described sidepiece.
The utility model has following beneficial effect:
The power can selected according to user control the work of corresponding LC parallel branch automatically, thus can realize the object that heating surface (area) (HS changes automatically with changed power.
Multiple device for power switching is combined with multiple LC parallel branch, makes laser heating power bracket can reach 300 ~ 5000W (below 300W is interval mode of heating).
Accompanying drawing explanation
Fig. 1 is the inductive heating circuit block diagram of the first embodiment;
Fig. 2 is the inductive heating circuit block diagram of the second embodiment;
Fig. 3 is the inductive heating circuit block diagram of the 3rd embodiment.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
With reference to Fig. 1, first embodiment inductive heating circuit comprises: the first resonant element 20 be made up of a LC parallel branch 21 and the first device for power switching 22, first control unit 51, the man-machine interaction unit 40 be connected with the first control unit 51, and power supply unit 10.The output of the first control unit 51 is connected between the input of the first device for power switching 22, first control unit 51 and a LC parallel branch 21 by the first driver element 60 and connects lock unit 30.Described man-machine interaction unit 40 has power selection device.In addition, this inductive heating circuit also comprises the first switch 721-72n of at least one the 2nd LC parallel branch 711-71n and equal number.Described at least one the 2nd LC parallel branch 711-71n and the first switch 721-72n at least one series arm in series correspondingly, at least one series arm described is in parallel with a described LC parallel branch 21.This inductive heating circuit also comprises the second control unit 52, second control unit 52 is connected (not shown) with described power selection device and the first switch 721-72n, to read the state of described power selection device and to control described first switch 721-72n conducting or cut-off according to the described state read.
From above-mentioned, in above-mentioned inductive heating circuit, have employed controllable multipath LC parallel resonance technology.When user selects power by the power selection device of man-machine interaction unit 40, second control unit 52 can read the state of power selection device, and then automatically control the first switch 721-72n conducting or cut-off according to the state read, thus control a LC parallel branch 21 and work independently or work with one or more in the 2nd LC parallel branch 711-71n simultaneously.By arranging the position of coil on coil panel of formation the one LC parallel branch 21, the 2nd LC parallel branch 711-71n, the object that heating surface (area) (HS changes automatically with power can be realized.
In this embodiment, the state of power selection device and some power one_to_one corresponding, such as: the corresponding 700W of state 1, the corresponding 1000W of state 2, the corresponding 2000W of state 3, the corresponding 3000W of state 4, power corresponding to described state is larger, and the quantity of the first switch 721-72n of conducting is more.Thus can realize: when power increases, the LC parallel branch simultaneously worked increases automatically, and heating surface (area) (HS increases automatically, and on the contrary, when power reduction, the LC parallel branch simultaneously worked reduces automatically, and heating surface (area) (HS reduces automatically.
Further, above-mentioned inductive heating circuit also comprises: at least one second device for power switching 731-73n, the second driver element 751-75n of equal number, and the second switch 741-74n of equal number.The series arm that at least one second device for power switching 731-73n is formed with described 2nd LC parallel branch 711-71n and the first switch 721-72n is connected, to form resonant element.Second driver element 751-75n is connected between the output of the first control unit 51 and the second device for power switching 731-73n, amplifies the work of rear drive resonant element with the control signal exported by the first control unit 51.Second switch 741-74n correspondence is connected in the control loop of at least one the second device for power switching 731-73n described, and the control end of second switch 741-74n is connected (not shown) with the output of described second control unit 52, control second switch 731-73n conducting or cut-off with the state of the power selection device read according to the second control unit 52.Like this, when power increases, one or more second device for power switching 731-73n and the first device for power switching 22 work simultaneously, combine, laser heating power bracket can be made to reach 300 ~ 5000W with above-mentioned multichannel LC parallel resonance technology.
In the present embodiment, the quantity of the second device for power switching 731-73n is identical with the quantity of the 2nd LC parallel branch 711-71n, and the second device for power switching 731-73n is connected correspondingly with the 2nd LC parallel branch 711-71n.Further, first switch of corresponding 2nd LC parallel branch 711-71n and the second device for power switching 731-73n and the synchronous conducting of second switch or cut-off is connected to, such as: the first switch 711 ends with second switch 741 conducting simultaneously simultaneously.Second control unit 52 and the first control unit 51 are realized by same microprocessor 50.But the utility model is not limited to this, the quantity of the second device for power switching 731-73n also can be less than or more than the quantity of the 2nd LC parallel branch 711-71n.Second control unit 52 and the first control unit 51 also can be realized by two microprocessors, or combine realization by discrete component.
With reference to Fig. 2, the second embodiment inductive heating circuit is substantially identical with the first embodiment, and difference is: in the first embodiment, and second switch 741-74n correspondence is connected in the control loop of at least one the second device for power switching 731-73n described.And in a second embodiment, second switch 741-74n correspondence is connected in the major loop of at least one the second device for power switching 731-73n described.
With reference to Fig. 3,3rd embodiment inductive heating circuit comprises: the first resonant element 20 be made up of a LC parallel branch 21 and the first device for power switching 22, first control unit 51, the man-machine interaction unit 40 be connected with the first control unit 51, and power supply unit 10.The output of the first control unit 51 is connected between the input of the first device for power switching 22, first control unit 51 and a LC parallel branch 21 by the first driver element 60 and connects lock unit 30.Described man-machine interaction unit 40 has power selection device.In addition, this inductive heating circuit also comprises the first switch 721-72n of at least one the 2nd LC parallel branch 711-71n and equal number.Described at least one the 2nd LC parallel branch 711-71n and the first switch 721-72n at least one series arm in series correspondingly, at least one series arm described is in parallel with a described LC parallel branch 21.This inductive heating circuit also comprises the second control unit 52, second control unit 52 is connected (not shown) with described power selection device and the first switch 721-72n, to read the state of described power selection device and to control described first switch 721-72n conducting or cut-off according to the described state read.
From above-mentioned, compared with the first embodiment, the 3rd embodiment does not arrange the second device for power switching, the second driver element and second switch.Therefore, the 3rd embodiment can realize heating surface (area) (HS and automatically change with power, but cannot realize high-power heating.
Adopting any one inductive heating circuit above-mentioned, by arranging the position of coil on coil panel of formation the one LC parallel branch 21, the 2nd LC parallel branch 711-71n, the induction heating equipment that heating surface (area) (HS changes automatically with power can be formed.Particularly, the first coil forming a described LC parallel branch 21 is arranged at coil panel center, second coil of formation the 2nd LC parallel branch 711-71n is arranged at the periphery of described first coil.Like this, when small-power, only a LC parallel branch 21 works, and only coil panel center heating, when power increases, one or more 2nd LC parallel branch 711-71n and a LC parallel branch 21 work simultaneously, thus heating surface (area) (HS is increased automatically.
In the induction heating equipment of some embodiments, coil panel is tabular, and described first coil and all second coils are plane setting.
In the induction heating equipment of other embodiments, coil panel has bottom and sidepiece, and described first coil is arranged at described bottom, and at least one second coil is arranged at described sidepiece.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1. an inductive heating circuit, comprising: the first resonant element (20) be made up of a LC parallel branch (21) and the first device for power switching (22); First control unit (51) and connected man-machine interaction unit (40); The output of the first control unit (51) connects described first device for power switching by the first driver element (60), lock unit (30) is connected between the input of the first control unit (51) and a LC parallel branch, described man-machine interaction unit (40) has power selection device, it is characterized in that: described inductive heating circuit also comprises
First switch (721-72n) of at least one the 2nd LC parallel branch (711-71n) and equal number, at least one the 2nd LC parallel branch described and the first switch at least one series arm in series correspondingly, at least one series arm described is in parallel with a described LC parallel branch (21); And
Second control unit (52), is connected with described power selection device and the first switch, to read the state of described power selection device and to control described first switch conduction or cut-off according to the described state read.
2. inductive heating circuit according to claim 1, is characterized in that: the state of described power selection device and some power one_to_one corresponding, and power corresponding to described state is larger, and the quantity of the first switch of conducting is more.
3. inductive heating circuit according to claim 1, is characterized in that: described inductive heating circuit also comprises
At least one second device for power switching (731-73n), the series arm formed with described 2nd LC parallel branch and the first switch is connected, to form resonant element;
Second driver element (751-75n), between the output being connected to the first control unit (51) and the second device for power switching; And
With the second switch (741-74n) of the second device for power switching equal number, correspondence is connected in the loop of at least one the second device for power switching described, and control end is connected with the output of described second control unit, control second switch conducting or cut-off with the state of the power selection device read according to the second control unit.
4. inductive heating circuit according to claim 3, it is characterized in that: the quantity of described second device for power switching (731-73n) is identical with the quantity of described 2nd LC parallel branch (711-71n), and the second device for power switching is connected correspondingly with the 2nd LC parallel branch.
5. inductive heating circuit according to claim 4, is characterized in that: second switch (741-74n) is connected to the control loop of corresponding second device for power switching (731-73n).
6. inductive heating circuit according to claim 4, is characterized in that: second switch (741-74n) is connected to the major loop of corresponding second device for power switching (731-73n).
7. inductive heating circuit according to claim 4, is characterized in that: be connected to the first switch of corresponding 2nd LC parallel branch and the second device for power switching and the synchronous conducting of second switch or cut-off.
8. inductive heating circuit according to claim 1, is characterized in that: described second control unit (52) and the first control unit (51) are realized by same microprocessor (50).
9. an induction heating equipment, comprise coil panel and inductive heating circuit, it is characterized in that: described inductive heating circuit adopts the inductive heating circuit in claim 1-8 described in any one, the first coil forming a described LC parallel branch is arranged at coil panel center, and the second coil forming the 2nd LC parallel branch is arranged at the periphery of described first coil.
10. induction heating equipment according to claim 9, is characterized in that:
Described coil panel is tabular, and described first coil and all second coils are plane setting; Or
Described coil panel has bottom and sidepiece, and described first coil is arranged at described bottom, and at least one second coil is arranged at described sidepiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373010.XU CN204929302U (en) | 2015-06-02 | 2015-06-02 | Induction heater and circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373010.XU CN204929302U (en) | 2015-06-02 | 2015-06-02 | Induction heater and circuit |
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| Publication Number | Publication Date |
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| CN204929302U true CN204929302U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520373010.XU Active CN204929302U (en) | 2015-06-02 | 2015-06-02 | Induction heater and circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451685A (en) * | 2016-12-09 | 2017-02-22 | 重庆理工大学 | Mobile phone non-contact fast charge system |
| CN108507152A (en) * | 2018-03-19 | 2018-09-07 | 梁之龙 | The distributed heat energy system of current vortex heating device and its composition |
-
2015
- 2015-06-02 CN CN201520373010.XU patent/CN204929302U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451685A (en) * | 2016-12-09 | 2017-02-22 | 重庆理工大学 | Mobile phone non-contact fast charge system |
| CN108507152A (en) * | 2018-03-19 | 2018-09-07 | 梁之龙 | The distributed heat energy system of current vortex heating device and its composition |
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