CN215734908U - Cooking utensil control circuit and cooking utensil - Google Patents
Cooking utensil control circuit and cooking utensil Download PDFInfo
- Publication number
- CN215734908U CN215734908U CN202121816055.1U CN202121816055U CN215734908U CN 215734908 U CN215734908 U CN 215734908U CN 202121816055 U CN202121816055 U CN 202121816055U CN 215734908 U CN215734908 U CN 215734908U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resonance
- resonant
- parameter
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010411 cooking Methods 0.000 title claims abstract description 57
- 239000003990 capacitor Substances 0.000 claims description 55
- 238000001514 detection method Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model discloses a cooking utensil control circuit, which comprises a power supply circuit, a resonance circuit and a resonance parameter switching circuit, wherein the power supply circuit is connected with a power supply and is used for providing working voltage of a cooking utensil; the resonance circuit is connected with the power supply circuit and comprises a resonance device which can be switched in or out of a loop of the resonance circuit and is used for providing at least two resonance parameters; the resonance parameter switching circuit is connected with the resonance circuit and used for switching a resonance device in the resonance circuit into or out of a loop of the resonance circuit so as to enable the resonance parameter to be matched with a voltage parameter of the power supply. Cooking utensil control circuit can be according to operating voltage's difference in this application, in time through resonance parameter switching circuit adjustment access cooking utensil control circuit's resonance parameter to make access control circuit's resonance parameter and voltage phase match and realized that control circuit can both be with the optimal power operation in the full voltage range.
Description
Technical Field
The utility model relates to the field of household appliances, in particular to a cooking appliance control circuit and a cooking appliance.
Background
Along with the popularization of electromagnetic heating technology, cook food through electromagnetic heating, it is efficient to generate heat, convenient to use safety, and convenient to carry simultaneously compares with traditional heating equipment and has very big advantage, therefore the electromagnetic heating technology has been applied to on multiple cooking utensil such as electromagnetism stove, electric rice cooker. However, the voltages in different countries have large differences, the electromagnetic heating is greatly influenced by the voltages, and the parameter requirements of the resonant circuit are greatly different by the different voltages, otherwise, the appliance performance is affected due to insufficient power and increased machine temperature caused by mismatch. For example, many cooking appliances are designed for specific use voltages, and an induction cooker normally used in a 220V/50Hz environment cannot be used universally in a 110V/60Hz environment, which may affect the heating effect and even the performance of the induction cooker.
The electromagnetic heating has higher requirement coordination to power supply working voltage and resonance circuit, and the prior art only detects voltage and does not adjust more important resonance parameter matching, for example, the electromagnetic heating circuit is not changed, and the influence of different input voltages on the resonance circuit still exists, which still causes the actual problems of insufficient circuit power or high temperature rise and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems explained in the background art, the utility model provides a control circuit of a cooking appliance, which can adjust the resonance parameters accessed to the control circuit of the cooking appliance through a resonance parameter switching circuit in time according to different working voltages so as to match the resonance parameters accessed to the control circuit with the voltages, ensure that the control circuit realizes the highest power under different input voltage conditions and does not have the problems of temperature rise and the like caused by low matching degree, and realize that the control circuit can operate at the optimal power within the full voltage range.
In order to achieve the purpose, the technical scheme is as follows:
a cooking utensil control circuit comprises a power supply circuit, a control circuit and a control circuit, wherein the power supply circuit is connected with a power supply and is used for providing working voltage of a cooking utensil; the resonance circuit is connected with the power supply circuit, comprises a resonance device which can be switched in or out of a loop of the resonance circuit and is used for providing at least two resonance parameters; the resonant circuit is used for switching a resonant device in the resonant circuit into or out of a loop of the resonant circuit, so that the resonant parameters are matched with the voltage parameters of the power supply.
Further, the resonance device includes: inductance and/or capacitance; the resonance circuit includes: an electromagnetic coil and a resonant capacitor; and the resonance parameter switching circuit is used for changing the inductance of the electromagnetic coil and/or the capacitance of the resonance capacitor.
Further, the resonance circuit includes at least two of the electromagnetic coils connected in parallel; the resonance parameter switching circuit comprises a first switch connected with at least one electromagnetic coil in series and used for switching the enabling state of the corresponding electromagnetic coil.
Further, the resonance circuit includes at least two of the electromagnetic coils connected in series; the resonance parameter switching circuit comprises a second switch which is connected with at least one electromagnetic coil in parallel and is used for switching the enabling state of the corresponding electromagnetic coil.
Further, the resonant circuit comprises at least two of the resonant capacitors connected in parallel; the resonance parameter switching circuit comprises a third switch which is connected with the at least one resonance capacitor in series and is used for switching the enabling state of the corresponding resonance capacitor.
Further, the resonance circuit includes at least two of the resonance capacitors connected in series; the resonance parameter switching circuit comprises a fourth switch, which is connected with the at least one resonance capacitor in series and is used for switching the enabling state of the corresponding resonance capacitor.
Further, the cooking appliance control circuit further comprises a voltage detection unit which is respectively connected with the power supply and the resonance parameter switching circuit and used for detecting a power supply voltage parameter and controlling the resonance parameter switching circuit to switch the resonance parameter of the resonance circuit based on the power supply voltage parameter.
Further, the power supply circuit comprises a rectifying circuit connected between the resonant circuit and the power supply and used for rectifying the alternating current of the power supply into direct current; the filter circuit is connected between the rectifying circuit and the resonant circuit and is used for filtering the direct current output by the rectifying circuit.
Further, the resonance parameter switching circuit comprises at least one of a relay, a microswitch, a triode, a silicon controlled rectifier, a mos tube and an IGBT.
The present application also provides a cooking appliance comprising a cooking appliance body; also comprises a cooking utensil control circuit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic diagram of a control circuit of a cooking appliance provided by the present invention;
fig. 2 is a schematic circuit diagram of a first embodiment of a control circuit of a cooking appliance according to the present invention;
FIG. 3 is a schematic circuit diagram of a second embodiment of a control circuit of a cooking appliance according to the present invention;
fig. 4 is a schematic circuit diagram of a third embodiment of a control circuit of a cooking appliance according to the present invention;
fig. 5 is a schematic circuit diagram of a fourth embodiment of a control circuit of a cooking appliance according to the present invention;
fig. 6 is a schematic diagram of an embodiment of a control circuit of a cooking appliance provided in the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The electromagnetic heating has high requirement on the matching of the working voltage of the power supply and the resonance parameters in the resonance circuit, and when the power supply voltage is not matched with the resonance parameters in the resonance circuit, the problems of insufficient power of the resonance circuit or large temperature rise loss of electronic elements can occur, for example, the voltage is 220V, and the inductance of a heating coil with the power of 2100W is generally high, for example, between 90 and 130 uH; the voltage is 110V, and the inductance of the heating coil is generally small under the condition of relative current, for example, between 40 and 80uH when the power is 1000W. If a heating coil with a higher inductance, for example, 100uH, is used in an electromagnetic heating device with an operating voltage of 110V, the power at the same current cannot be satisfied. And use the heating coil of less inductance value, for example 50uH, use and probably lead to the IGBT to lose too big when 220V, the temperature rise is too high and damage the IGBT, and based on this, this application provides a cooking utensil control circuit, makes the resonance parameter in the resonance circuit can match with the voltage parameter of power, gives play to corresponding performance in different voltage ranges, and then realizes full voltage range work.
Fig. 1 is a schematic circuit diagram of a control circuit of a cooking appliance according to an embodiment of the present application, wherein the control circuit of the cooking appliance includes a power supply circuit 10, a resonant circuit 20, and a resonant parameter switching circuit 30. The power supply circuit 10 is connected with a power supply and is used for providing working voltage of the cooking appliance; the supply circuit 10 is connected to a resonance circuit 20, the resonance circuit 20 comprising a resonance device switchable into or out of a loop of the resonance circuit 20 for providing at least two resonance parameters; the resonant circuit 20 is connected to a resonant parameter switching circuit 30, the resonant parameter switching circuit 30 being adapted to switch a resonant device in the resonant circuit 20 into or out of a loop of the resonant circuit 20 to match a resonant parameter to a voltage parameter of the power supply.
In the present application, the resonant parameter switching circuit 30 switches the resonant device to switch in or out the loop of the resonant circuit 20, so as to change the resonant parameter in the resonant circuit 20, so that the switched resonant parameter matches with the operating voltage of the power supply, so that the resonant circuit 20 has an optimal operating state, and the damage caused by the resonant circuit 20 being in an abnormal operating state is avoided. The control circuit of the cooking appliance can switch the resonance parameters of the resonance circuit 20 according to different working voltages of the power supply, so that the control circuit of the cooking appliance can be suitable for scenes of power supplies with different working voltages, and the applicability of the electromagnetic heating equipment is improved.
The resonant device may include a resonant capacitor and an electromagnetic coil. For example, at least two electromagnetic coils connected in parallel or series, at least two resonant capacitors connected in series or parallel, wherein at least one of the electromagnetic coils and at least one of the resonant capacitors are connected in series or parallel to form a loop of the resonant circuit 20. At least one of the electromagnetic coil and the resonant capacitor may be switched in and out of the loop of the resonant circuit 20 by the resonant parameter switching circuit 30 to change the resonant parameter of the resonant circuit 20.
Referring to fig. 2 and 3, in one particular embodiment, resonant circuit 20 includes a first resonant capacitor C3, a first electromagnetic coil L2, and a second electromagnetic coil L3, wherein the resonant device that can switch in and out of the resonant circuit 20 loop can be the second electromagnetic coil L3.
Referring to fig. 4 and 5, in one particular embodiment, resonant circuit 20 includes a first resonant capacitor C3, a second resonant capacitor C4, and a first electromagnetic coil L2, wherein the resonant device that can switch in and out of the loop of resonant circuit 20 can be the second resonant capacitor C4.
Also connected to the resonant circuit 20 is a resonant parameter switching circuit 30, the resonant parameter switching circuit 30 being capable of switching the resonant parameter of the resonant circuit 20, for example, in the embodiment shown in fig. 2 and 3, the resonant parameter switching circuit 30 is capable of switching the connection state of the second electromagnetic coil L3 in the resonant circuit 20 to the loop of the resonant circuit 20 to switch the inductance parameter of the resonant circuit 20; for example, in the specific embodiment shown in fig. 4 and 5, the resonance parameter switching circuit 30 can switch the connection state of the second resonance capacitor C4 in the resonance circuit 20 into the loop of the resonance circuit 20 to switch the capacitance parameter of the resonance circuit 20.
By adjusting the resonant parameters, the resonant circuit 20 can have a high matching degree with the operating voltage, for example, an electromagnetic coil with inductance of 100uH normally needs to be used under the operating voltage of 220V, and when the electromagnetic coil is in a circuit with the operating voltage of 110V, the power requirement under the same current cannot be met, so that the resonant parameter switching circuit 30 switches in or out a resonant device in the loop of the resonant circuit 20 to switch the inductance of the electromagnetic coil in the control circuit to 50uH so as to match with the operating voltage of 110V, thereby realizing low-voltage high-power heating. Accordingly, the electromagnetic coil with inductance of 50uH needs to be used under the operating voltage of 110V, when the electromagnetic coil is in the circuit with the operating voltage of 220V, the IGBT (switching device Q1 in fig. 2-5) may be damaged by high temperature rise, so that the resonant device is switched in or out in the loop of the resonant circuit 20 through the resonant parameter switching circuit 30 to switch the inductance of the electromagnetic coil in the control circuit to 100uH, that is, the circuit can operate normally.
In a specific embodiment, referring to fig. 2, the resonant circuit 20 may include a first electromagnetic coil L2 and a second electromagnetic coil L3 connected in parallel, the resonant device may be a second electromagnetic coil L3, and the resonant parameter switching circuit 30 may include a first switch J1, the first switch J1 being connected in series with the second electromagnetic coil L3 for switching the enabled state of the second electromagnetic coil L3. When the working voltage is 110V, the first switch J1 is closed, the second electromagnetic coil L3 is switched into the resonant circuit 20, the first electromagnetic coil L2 is connected with the second electromagnetic coil L3 in parallel, the inductance parameter is small at the moment according to the L ═ L2 multiplied by L3)/(L2+ L3), low-voltage high-power heating can be realized, when the working voltage is 220V, the first switch J1 is opened, the second electromagnetic coil L3 is switched into the resonant circuit 20, the inductance parameter in the resonant circuit 20 is the inductance of the first electromagnetic coil L2 at the moment, L2> L, the inductance parameter is large at the moment, and the IGBT loss and temperature rise requirements can be met. The first switch J1 can be selected from a relay or a microswitch, a triode, a thyristor, a mos tube, an IGBT and other switches.
As will be understood by those skilled in the art, the resonant circuit 20 may include at least two parallel-connected electromagnetic coils, and the resonant circuit 20 may have a plurality of first switches and be connected in series with the plurality of electromagnetic coils, and the more parallel-connected electromagnetic coils, the larger the switchable variation range of inductance parameters in the resonant circuit 20 is, so that the resonant circuit 20 can adapt to more operating voltage environments, and implement full-voltage range operation. Of course, the present application does not limit the number of the electromagnetic coils and the first switches, as long as the first switches can satisfy the switching of the inductance parameter of the resonant circuit 20.
In a specific embodiment different from fig. 1, referring to fig. 2, the resonance circuit 20 includes a first electromagnetic coil L2 and a second electromagnetic coil L3 connected in series, the resonance device may be a second electromagnetic coil L3, and the resonance parameter switching circuit 30 may include a second switch J2, the second switch J2 being connected in parallel with the second electromagnetic coil L3 for switching the enabled state of the second electromagnetic coil L3. When the working voltage is 110V, the second switch J2 is closed, the second electromagnetic coil L3 is switched out of the resonant circuit 20, only the first electromagnetic coil L2 is arranged in the resonant circuit 20, the inductance parameter is small at the moment, low-voltage high-power heating can be achieved, when the working voltage is 220V, the second switch J2 is opened, the second electromagnetic coil L3 is switched into the resonant circuit 20, the first electromagnetic coil L2 and the second electromagnetic coil L3 are connected in series in the resonant circuit 20 at the moment, the inductance parameter is large at the moment according to the condition that L is L2+ L3> L2, and the IGBT loss and temperature rise requirements can be met. The second switch J2 is selectable with reference to the first switch J1.
As will be understood by those skilled in the art, the resonant circuit 20 may include at least two electromagnetic coils connected in series, and the resonant circuit 20 may have a plurality of second switches and be connected in parallel with the plurality of electromagnetic coils, respectively, the more electromagnetic coils connected in series, the larger the switchable variation range of inductance parameters in the resonant circuit 20, so that the resonant circuit 20 can adapt to more operating voltage environments, and implement full-voltage range operation. Of course, the present application does not limit the number of the electromagnetic coils and the second switches, as long as the second switches can satisfy the switching of the inductance parameter of the resonant circuit 20.
In an embodiment distinguished from the switched inductance parameter, as shown in fig. 3, the resonant circuit 20 includes a first resonant capacitor C3 and a second resonant capacitor C4 connected in parallel, the resonant device may be a second resonant capacitor C4, and the resonant parameter switching circuit 30 may include a third switch J3, the third switch J3 being connected in series with the second resonant capacitor C4 for switching an enable state of the second resonant capacitor C4. When the working voltage is 110V, the third switch J3 is opened, the second resonant capacitor C4 is switched out of the resonant circuit 20, only the first electromagnetic coil L2 in the resonant circuit 20 is connected with the second resonant capacitor C4 in parallel, the capacitance parameter in the resonant circuit 20 is large at the moment, low-voltage high-power heating can be achieved, when the working voltage is 220V, the third switch J3 is closed, the second resonant capacitor C4 is switched in the resonant circuit 20, the first resonant capacitor C3 is connected with the second resonant capacitor C4 in parallel at the moment, the capacitance parameter in the resonant circuit 20 is reduced at the moment, and the IGBT loss and temperature rise requirements can be met. The third switch J3 can be selected with reference to the first switch J1.
As can be understood by those skilled in the art, the resonant circuit 20 may include at least two resonant capacitors connected in parallel, and the resonant circuit 20 may have a plurality of third switches and be connected in series with the plurality of resonant capacitors, respectively, the more the resonant capacitors connected in parallel, the larger the switchable variation range of the capacitance parameter in the resonant circuit 20 is, so that the resonant circuit 20 can adapt to more operating voltage environments, and implement full-voltage range operation. Of course, the present application does not limit the number of the resonant capacitor and the third switch, as long as the third switch can satisfy the switching of the capacitance parameter of the resonant circuit 20.
In a specific embodiment different from fig. 3, referring to fig. 4, the resonant circuit 20 includes a first resonant capacitor C3 and a second resonant capacitor C4 connected in series, the resonant device may be a second resonant capacitor C4, the resonant parameter switching circuit 30 includes a fourth switch J4, and the fourth switch J4 is connected in parallel with the second resonant capacitor C4 for switching the enabling state of the second resonant capacitor C4. When the working voltage is 110V, the fourth switch J4 is opened, the second resonant capacitor C4 is switched into the resonant circuit 20, the first resonant capacitor C3 and the second resonant capacitor C4 in the resonant circuit 20 are connected in series, the capacitance parameter in the resonant circuit 20 is large at the moment, low-voltage high-power heating can be realized, when the working voltage is 220V, the fourth switch J4 is closed, the second resonant capacitor C4 is switched into the resonant circuit 20, only the first electromagnetic coil L2 is connected with the first resonant capacitor C3 in the resonant circuit 20 in parallel at the moment, the capacitance parameter in the resonant circuit 20 is reduced at the moment, and the IGBT loss and temperature rise requirements can be met. The fourth switch J4 is selected with reference to the first switch J1.
As can be understood by those skilled in the art, the resonant circuit 20 may include at least two resonant capacitors connected in series, and the resonant circuit 20 may have a plurality of fourth switches and be connected in parallel with the plurality of resonant capacitors, respectively, the more the resonant capacitors connected in series, the larger the switchable variation range of the capacitance parameter in the resonant circuit 20 is, so that the resonant circuit 20 can adapt to more operating voltage environments, and implement full-voltage range operation. Of course, the number of the resonant capacitor and the fourth switch is not limited in the present application, as long as the fourth switch can satisfy the switching of the capacitance parameter of the resonant circuit 20.
In a preferred implementation of the control circuit of the cooking appliance, the control circuit further comprises a voltage detection unit connected to the power supply and the resonance parameter switching circuit 30, respectively, see fig. 6, the voltage detection unit being capable of detecting a power supply voltage parameter and controlling the resonance parameter switching circuit 30 to switch the resonance parameter of the resonance circuit 20 based on the power supply voltage parameter. The voltage detection unit detects the voltage and controls the resonance parameter switching circuit 30, so that the full automation is realized, the judgment can be more accurate, and the control circuit has the optimal matching parameters. In a specific embodiment, for 50HZ and 60HZ working voltages, the voltage detection unit firstly rectifies sinusoidal waves into periodic waveforms with periods of 10ms and 8.3ms, an MCU in the voltage detection unit interrupts acquisition of zero-crossing signals through a comparator to calculate a waveform period so as to determine the frequency of a power grid, and then determines a voltage sampling period according to the frequency to complete voltage detection. As another specific embodiment, the voltage detection unit may include: the sampling circuit is used for sampling voltage of the power supply, and one end of the sampling circuit is connected with the power supply, and the other end of the sampling circuit is connected with the input end of the comparator circuit; the comparator circuit is used for comparing a voltage sampling signal of the power supply with a reference voltage; and the controller is connected with the output end of the comparator circuit and is used for calculating the frequency of the power grid according to the signal output by the comparator circuit.
After the voltage detection is completed, the voltage detection unit can determine the resonance parameter matching the voltage and release a control signal to the resonance parameter switching circuit 30, so that the resonance parameter switching circuit 30 switches the resonance parameter of the resonance circuit 20.
For the switching of the resonance parameter of the resonance circuit 20, it should be done before the cooking appliance is operated, in which the switching of the relay part in the resonance parameter switching circuit 30 is extremely vulnerable. In an embodiment different from the voltage detection unit, the user may manually control the resonance parameter switching circuit 30 to complete the switching of the resonance parameter according to the voltage parameter.
In a preferred implementation of the control circuit of the cooking appliance, as can be seen in fig. 2-5, the power supply circuit 10 comprises a rectifier circuit DB connected between the resonant circuit 20 and the power supply for rectifying the power supply alternating current into direct current, which rectifier circuit may, for example, be a half-wave rectifier circuit or a full-wave rectifier circuit, e.g. a diode or a rectifier bridge; the resonant circuit 20 is connected to the rectifying circuit DB, and the filtering circuit is an LC filtering circuit formed by an inductor L1 and a first capacitor C2, and the filtering circuit is used for filtering the direct current output by the rectifying circuit DB. Illustratively, a second capacitor C1 may be further included between the power supply and the power supply circuit 10 for filtering the power supply.
In the present application, the embodiment in which the operating voltage of 110V is lower voltage and the embodiment in which the operating voltage of 220V is higher voltage do not represent that the control circuit of the cooking appliance provided in the present application can only be applied to these two operating voltages, and it can be understood that when the control circuit of the cooking appliance is connected to any operating voltage, the resonant parameter switching circuit 30 can switch the resonant parameter of the resonant circuit 20 to match the resonant parameter with the operating voltage parameter of the power supply.
The present application also provides a cooking appliance that includes a cooking appliance body and a cooking appliance control circuit. This cooking utensil can in time adjust resonance circuit 20's among its cooking utensil control circuit resonance parameter according to operating voltage to realize the optimal matching degree, make cooking utensil can adapt to different operating voltage environment and keep high-efficient work in different operating voltage environment, and because control circuit's timely adjustment, control circuit can not damage easily, consequently still prolonged cooking utensil's life.
So far, the technical solutions of the present disclosure have been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present disclosure is not limited to only these specific embodiments. The technical solutions in the above embodiments can be split and combined, and equivalent changes or substitutions can be made on related technical features by those skilled in the art without departing from the technical principles of the present disclosure, and any changes, equivalents, improvements, and the like made within the technical concept and/or technical principles of the present disclosure will fall within the protection scope of the present disclosure.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A cooking appliance control circuit, comprising:
the power supply circuit is connected with the power supply and is used for providing working voltage of the cooking appliance;
a resonant circuit connected to the supply circuit, including a resonant device that can be switched into or out of a loop of the resonant circuit, for providing at least two resonant parameters;
and the resonance parameter switching circuit is connected with the resonance circuit and used for switching a resonance device in the resonance circuit into or out of a loop of the resonance circuit so as to enable the resonance parameter to be matched with the voltage parameter of the power supply.
2. The cooking appliance control circuit of claim 1, wherein the resonant parameter comprises: inductance and/or capacitance;
the resonance device includes: an electromagnetic coil and a resonant capacitor;
and the resonance parameter switching circuit is used for changing the inductance of the electromagnetic coil and/or the capacitance of the resonance capacitor.
3. The cooking appliance control circuit of claim 2,
the resonant circuit comprises at least two of the electromagnetic coils connected in parallel;
the resonance parameter switching circuit comprises a first switch connected with at least one electromagnetic coil in series and used for switching the enabling state of the corresponding electromagnetic coil.
4. The cooking appliance control circuit of claim 2,
said resonant circuit comprises at least two said electromagnetic coils connected in series;
the resonance parameter switching circuit comprises a second switch which is connected with at least one electromagnetic coil in parallel and is used for switching the enabling state of the corresponding electromagnetic coil.
5. Cooking appliance control circuit according to any of the claims 2 to 4,
the resonant circuit comprises at least two resonant capacitors connected in parallel;
the resonance parameter switching circuit comprises a third switch which is connected with at least one resonance capacitor in series and used for switching the enabling state of the corresponding resonance capacitor.
6. Cooking appliance control circuit according to any of the claims 2 to 4,
the resonant circuit comprises at least two of the resonant capacitors connected in series;
the resonance parameter switching circuit comprises a fourth switch, which is connected with at least one resonance capacitor in series and is used for switching the enabling state of the corresponding resonance capacitor.
7. The cooking appliance control circuit of claim 1, further comprising: and the voltage detection unit is respectively connected with the power supply and the resonance parameter switching circuit and is used for detecting the voltage parameter of the power supply and controlling the resonance parameter switching circuit to switch the resonance parameter of the resonance circuit based on the voltage parameter of the power supply.
8. The cooking appliance control circuit of claim 1, wherein the power supply circuit comprises:
the rectifying circuit is connected between the resonant circuit and the power supply and used for rectifying the alternating current of the power supply into direct current;
and the filter circuit is connected between the rectifying circuit and the resonant circuit and is used for filtering the direct current output by the rectifying circuit.
9. The cooking appliance control circuit of claim 1, wherein the resonant parameter switching circuit comprises:
at least one of a relay, a microswitch, a triode, a silicon controlled rectifier, a mos tube and an IGBT.
10. A cooking appliance, comprising:
a cooking appliance body;
the cooking appliance control circuit of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121816055.1U CN215734908U (en) | 2021-08-05 | 2021-08-05 | Cooking utensil control circuit and cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121816055.1U CN215734908U (en) | 2021-08-05 | 2021-08-05 | Cooking utensil control circuit and cooking utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215734908U true CN215734908U (en) | 2022-02-01 |
Family
ID=79992831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121816055.1U Active CN215734908U (en) | 2021-08-05 | 2021-08-05 | Cooking utensil control circuit and cooking utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215734908U (en) |
-
2021
- 2021-08-05 CN CN202121816055.1U patent/CN215734908U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101944855B (en) | Digital control power supply converter for kitchen range | |
| CN102984837B (en) | Energy-saving multifrequency electromagnetic induction heating device | |
| CN203645850U (en) | Control device of high power induction cooker | |
| CN111669855A (en) | Method for controlling an induction coil and induction coil arrangement | |
| Tulu et al. | Induction cooker design with quasi resonant topology using jitter drive method | |
| KR20190083263A (en) | Induction heating device having improved interference noise canceling function and power control function | |
| CN215734908U (en) | Cooking utensil control circuit and cooking utensil | |
| CN107567122B (en) | Electromagnetic heating cooking system and heating control device and control method thereof | |
| CN201550029U (en) | Digital control type power converter for kitchen ranges | |
| US11785676B2 (en) | Cooking apparatus and cooking system including the same | |
| CN112394244B (en) | Detection circuit, electric appliance and control method | |
| KR20090005142U (en) | Induction heating cooker | |
| KR102142412B1 (en) | Cooker reducing Electro Magnetic Interference and Operating method thereof | |
| EP1255421A2 (en) | Induction cooking apparatus with improved characteristics | |
| Park et al. | Power curve-fitting control method with temperature compensation for all-metal induction heating systems | |
| JP7107746B2 (en) | electromagnetic induction cooker | |
| WO2021031453A1 (en) | Induction cooktop and control method for induction cooktop | |
| CN216650039U (en) | Electromagnetic induction heating circuit and electromagnetic heating equipment | |
| Amrhein et al. | A transformer-coupled, series-resonant topology for the induction heating of aluminum cookware | |
| CN112351535B (en) | Heating control method and device of electromagnetic heating circuit and electrical equipment | |
| CN110365124A (en) | A kind of wireless electric energy transmission device and its control method of electromagnetic oven and the dual-purpose machine of soy bean milk making machine | |
| CN214592051U (en) | Control circuit of electromagnetic cooking appliance and electromagnetic cooking appliance | |
| CN210518903U (en) | Low-power standby circuit and induction cooker | |
| CN208572476U (en) | Electromagnetic heating circuit and electromagnetic heating appliance | |
| Yachiangkam et al. | Resonant inverter with a variable-frequency asymmetrical voltage-cancellation control for low q-factor loads in induction cooking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |