CN219437179U - Electromagnetic heating control system and induction cooker - Google Patents
Electromagnetic heating control system and induction cooker Download PDFInfo
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- CN219437179U CN219437179U CN202320117370.8U CN202320117370U CN219437179U CN 219437179 U CN219437179 U CN 219437179U CN 202320117370 U CN202320117370 U CN 202320117370U CN 219437179 U CN219437179 U CN 219437179U
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Abstract
The utility model discloses an electromagnetic heating control system and an electromagnetic oven, wherein the system comprises a display key panel, a first electromagnetic heating circuit and a plurality of second electromagnetic heating circuits; the first electromagnetic heating circuit is connected to the display key panel, and the second electromagnetic heating circuit is connected to the display key panel; the first electromagnetic heating circuit comprises a switch power supply module, a first relay module, a heat dissipation module, a power supply driving module, a processor module and a heating wire coil module; under the condition that a plurality of electromagnetic heating circuits exist, the output end of the relay module of the electromagnetic heating circuit of the previous stage is connected to the switching power supply module of the next stage, under the standby condition, the switching power supply modules in the electromagnetic heating circuits of the next stage are powered off, standby current does not exist in the circuit, and the scheme can effectively reduce standby power consumption under the condition that a plurality of furnace heads or the electromagnetic heating circuits are arranged, and can be widely applied to the technical field of circuit structures.
Description
Technical Field
The utility model relates to the technical field of circuit structures, in particular to an electromagnetic heating control system and an electromagnetic oven.
Background
The induction cooker has the advantages of safety, no open fire, high efficiency, energy saving, cleaning and the like, and is common household electrical equipment. The switching device of the induction cooker is usually an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT for short). The control circuit of the induction cooker is connected with the driving circuit of the IGBT, and when the control circuit sends a turn-on signal or a turn-off signal to the driving circuit of the IGBT, the driving circuit drives the IGBT to turn on or off.
In the related technical scheme, the induction cooker can be provided with a plurality of furnace heads, but a certain standby power consumption exists for a switching power supply corresponding to each furnace head; therefore, if two or more burners are present in one induction cooker, the switching power supply corresponding to the burner is powered on during standby, which may cause higher standby power consumption.
Disclosure of Invention
The present utility model aims to solve one of the technical problems existing in the related art to at least a certain extent; therefore, an object of the embodiment of the present utility model is to provide an electromagnetic heating control system capable of effectively reducing standby power consumption, and in addition, in the embodiment of the present utility model, an electromagnetic oven including the system is also provided.
In order to achieve the above technical objective, in a first aspect, an electromagnetic heating control system provided by an embodiment of the present utility model includes a display key panel, a first electromagnetic heating circuit, and a plurality of second electromagnetic heating circuits; the first electromagnetic heating circuit and the second electromagnetic heating circuit are both connected to the display key panel;
the first electromagnetic heating circuit comprises a switch power supply module, a first relay module, a heat dissipation module, a power supply driving module, a processor module and a heating wire coil module;
one end of the first relay module is connected to the switching power supply module, and the other end of the first relay module is connected to the power supply driving module; one end of the heat dissipation module is connected to the switching power supply module, and the other end of the heat dissipation module is connected to the processor module; one end of an armature in the first relay module is connected with mains supply, and the other end of the armature is connected to the heating wire coil module; the other end of the armature is also connected to a second relay module in the second electromagnetic heating circuit; one end of a coil in the first relay module is connected to the switching power supply module, and the other end of the coil is connected to the power supply driving module; the heating coil module is also connected to the processor module.
In some possible embodiments, the heating coil module includes a first fuse, a filter circuit, and a heating coil;
one end of the first fuse is connected to the mains supply, and the other end of the first fuse is connected to the first end of the filter circuit; the other end of the filter circuit is connected to the heating wire coil, and the heating wire coil is also connected to the processor module.
In some possible embodiments, the filter circuit includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first resistor, a second resistor, a third resistor, and a common mode inductance;
one end of the first capacitor is connected to the other end of the first fuse, and the other end of the first capacitor is connected to the other end of the armature; one end of the first resistor is connected to the other end of the first fuse, the other end of the first resistor is connected to one end of the second resistor, and the other end of the second resistor is connected to one end of the third resistor; the other end of the third resistor is connected to the other end of the armature;
one end of a first inductor in the common mode inductor is connected to the other end of the first fuse, and the other end of the first inductor is connected to one end of the heating wire coil; one end of a second inductor in the common mode inductor is connected to the other end of the armature, and the other end of the second inductor is connected to the other end of the heating wire coil;
one end of the second capacitor is connected to one end of the heating wire coil, and the other end of the second capacitor is connected to the other end of the heating wire coil; one end of the third capacitor is connected to one end of the heating wire coil, and the other end of the third capacitor is grounded; one end of the fourth capacitor is connected to the other end of the heating wire coil, and the other end of the fourth capacitor is grounded.
In some possible embodiments, the power supply driving module includes a first transistor;
the collector of the first triode is connected to the other end of the coil, the base of the first triode is connected to the processor module, and the emitter of the first triode is grounded.
In some possible embodiments, the heat dissipation module includes a heat dissipation fan, a second transistor, and a third transistor;
one end of the cooling fan is grounded, and the other end of the cooling fan is connected to the collector electrode of the third triode; the base electrode of the third triode is connected to the collector electrode of the second triode, and the emitter electrode of the third triode is connected to the base electrode of the third triode through a fourth resistor; the emitter of the second triode is grounded, and the base of the second triode is connected to the processor module.
In some possible embodiments, the output of the switching power supply module includes a first output pin for providing a 5V voltage and a second output pin for providing a 12V voltage;
the first output pin is connected to the processor module, the second output pin is connected to the first relay module, and the second output pin is also connected to the heat dissipation module.
In some possible embodiments, the processor module comprises an MCU chip.
In some possible embodiments, the system further comprises a second fuse; one end of the second fuse is connected to the switching power supply module, and the other end of the second fuse is connected to the mains supply.
In another aspect, an embodiment of the present utility model provides an induction cooker; the induction cooker housing may include therein any of the induction heating control systems described in the first aspect.
In some possible embodiments, the surface of the housing is provided with a heating panel provided with a number of protrusions protruding from its surface, which protrusions are separated from each other to form a communicating channel.
The advantages and benefits of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
According to the technical scheme provided by the utility model, under the condition that a plurality of electromagnetic heating circuits exist, the output end of the relay module of the electromagnetic heating circuit of the previous stage is connected to the switching power supply module of the next stage, so that the switching power supply module in the electromagnetic heating circuit of the next stage is powered off under the standby condition, and no standby current exists in the circuit; according to the scheme, standby power consumption can be effectively reduced under the condition that a plurality of furnace heads or electromagnetic heating circuits are arranged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an electromagnetic heating control system according to an embodiment of the present utility model;
fig. 2 is a schematic circuit diagram of an electromagnetic heating circuit according to an embodiment of the present utility model.
Description of the embodiments
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "length," "upper," "lower," "front," "rear," "left," "right," "top," "inner," "outer," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As indicated in the background art, the induction cooker in the related art is provided with a plurality of burners and a plurality of switching power supplies; for example, since the standby power consumption of each switching power supply is about 0.3W, if two or more switching power supplies are energized at the time of standby, the standby power consumption cannot meet the requirement of 0.5W or less.
In view of the above technical problems, in a first aspect, as shown in fig. 1, an embodiment provides an electromagnetic heating control system, where the system includes a display key panel, a first electromagnetic heating circuit, and a plurality of second electromagnetic heating circuits; the first electromagnetic heating circuit and the second electromagnetic heating circuit are both connected to the display key panel.
The first electromagnetic heating circuit comprises a switch power supply module, a first relay module, a heat dissipation module, a power supply driving module, a processor module and a heating wire coil module; and the other electromagnetic heating circuits, namely the second electromagnetic heating circuit and the functional circuit module contained in the first electromagnetic heating circuit are the same. Further, the connection relation of each functional module in the electromagnetic heating circuit is as follows: one end of the first relay module is connected to the switching power supply module, and the other end of the first relay module is connected to the power supply driving module; one end of the heat dissipation module is connected to the switching power supply module, and the other end of the heat dissipation module is connected to the processor module; one end of an armature in the first relay module is connected with mains supply, and the other end of the armature is connected to the heating wire coil module; the other end of the armature is also connected to a second relay module in the second electromagnetic heating circuit; one end of a coil in the first relay module is connected to the switching power supply module, and the other end of the coil is connected to the power supply driving module; the heating coil module is also connected to the processor module.
In an embodiment, the switching power supply module is used for supplying power to each module in the circuit; the first relay module is mainly used for switching on or switching off the switching power supply module according to signals triggered by the processor module. The heat radiation module is mainly used for radiating heat of a functional module or a module including a heating wire coil in the electromagnetic heating circuit, and damage of a circuit caused by overhigh temperature is avoided. The power supply driving module is mainly used for receiving a power on or off signal sent by the processor module and carrying out corresponding amplification processing on the signal, so as to output a level signal capable of driving the relay module to act, and further enable the relay module to act. The processor module in the embodiment is configured to receive a user operation instruction signal obtained through the display key panel, and trigger a corresponding control signal to output to other functional modules according to the user operation instruction signal and control logic written in the processor module in advance, so as to complete actions corresponding to the user operation instruction signal. The heating wire coil module in the system is mainly used for converting electric energy into internal energy through the heating wire coil after the power is connected, so that the transmission of the internal energy (heat) is realized. In addition, the display key panel in the embodiment is mainly used for acquiring gesture actions of an operator and triggering corresponding user operation instruction signals to be transmitted to the processor module of the system. In some possible implementations, the processor module in the system includes an MCU chip. The MCU chip can be used for processing or triggering the signal instruction more efficiently, accurately and rapidly, so that the use experience of an operator is improved.
More specifically, as shown in fig. 2, in the embodiment, the display key panel may be powered by a single electromagnetic heating circuit, and when the electromagnetic oven is not in use, the relay modules in the electromagnetic heating circuit, including the relay modules in other electromagnetic heating circuits, are all in an off state. As shown in fig. 2, two input power lines of the electromagnetic heating circuit of the second stage and the following stages, one of which is connected to the output end of the relay module of the electromagnetic heating circuit of the first stage, are controlled by the relay module. Therefore, under the standby condition, the switching power supply in the second-stage electromagnetic heating circuit and the switching power supply of the third-stage electromagnetic heating circuit are both powered off and have no standby current; the purpose that the products of a plurality of furnace heads of a plurality of switch power supplies can meet the standby power consumption requirement below a lower threshold is achieved.
In some possible embodiments, the heating coil module includes a first fuse FS1, a filter circuit, and a heating coil; one end of the first fuse FS1 is connected to a mains supply, and the other end of the first fuse FS1 is connected to a first end of the filter circuit; the other end of the filter circuit is connected to the heating wire coil, and the heating wire coil is also connected to the processor module.
In an embodiment, the first fuse FS1 is mainly used to avoid damage of a circuit or a component caused by generation of an abnormal current two in the circuit; the filter circuit is mainly used for filtering, stabilizing voltage and the like of the mains supply; the heating wire coil is mainly used for converting commercial power (electric energy) after filtering treatment into internal energy and transmitting the energy.
In some possible implementations, the filter circuit in the embodiments includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3, and a common-mode inductance L1;
one end of the first capacitor C1 is connected to the other end of the first fuse, and the other end of the first capacitor C1 is connected to the other end of the armature; one end of the first resistor R1 is connected to the other end of the first fuse, the other end of the first resistor R1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to one end of the third resistor R3; the other end of the third resistor R3 is connected to the other end of the armature;
one end of a first inductor in the common-mode inductor L1 is connected to the other end of the first fuse, and the other end of the first inductor is connected to one end of the heating wire coil; one end of a second inductor in the common-mode inductor L1 is connected to the other end of the armature, and the other end of the second inductor is connected to the other end of the heating wire coil;
one end of the second capacitor C2 is connected to one end of the heating wire coil, and the other end of the second capacitor C2 is connected to the other end of the heating wire coil; one end of the third capacitor C3 is connected to one end of the heating wire coil, and the other end of the third capacitor C3 is grounded; one end of the fourth capacitor C4 is connected to the other end of the heating wire coil, and the other end of the fourth capacitor C4 is grounded.
In the embodiment, as shown in fig. 2, 220V mains supply is input from Lin1 and Nin1, after the relay module K1 is closed, and the mains supply passes through the fuse FS1, and reaches the safety capacitors of C1, C2, C3 and C4 and the common mode inductance L1 for filtering, the mains supply reaches the heating wire coil, and the IGBT switch and the switching frequency in the heating wire coil are controlled by the MCU singlechip program, so as to achieve the purpose of electromagnetic heating.
In some possible embodiments, the power supply driving module in the system includes a first triode; the collector of the first triode is connected to the other end of the coil, the base of the first triode is connected to the processor module, and the emitter of the first triode is grounded.
In particular, in the embodiment, as shown in fig. 2, the relay K1 is used to turn off the power supply of the electromagnetic heating circuit in the standby condition, so that the whole system can pass the purpose of standby power consumption requirement below a low threshold (for example, 0.5W). The switch of the relay 1 is controlled by the working state of the triode Q1, the relay is closed when the Q1 is on, and the relay is opened when the Q1 is off. And Q1 is also controlled by control logic pre-written by MCU or SCM program in direct display key board.
In some possible embodiments, the heat dissipation module in the system includes a heat dissipation fan, a second transistor Q2, and a third transistor Q3; one end of the cooling fan is grounded, and the other end of the cooling fan is connected to the collector electrode of the third triode Q3; the base electrode of the third triode Q3 is connected to the collector electrode of the second triode Q2, and the emitter electrode of the third triode Q3 is connected to the base electrode of the third triode Q3 through a fourth resistor; the emitter of the second triode Q2 is grounded, and the base of the second triode Q2 is connected to the processor module.
In particular, in the embodiment, as shown in fig. 2, the heat dissipation fan is used for dissipating heat of a heating device of the induction cooker, including but not limited to a heating wire coil, an IGBT radiator, a PCBA, and the like. The work of the cooling fan is controlled by the triodes Q2 and Q3; q2 and Q3 are turned on, the fan rotates, and otherwise, the fan is not turned off. The work of the triode is controlled by the program of the MCU singlechip, and can also be controlled by the singlechip program in the direct display key board.
In some possible embodiments, the output of the switching power supply module in the system includes a first output pin for providing a 5V voltage and a second output pin for providing a 12V voltage. The first output pin is connected to the processor module, the second output pin is connected to the first relay module, and the second output pin is further connected to the heat dissipation module.
In particular, in an embodiment, the switch power module is used to supply 12V and 5V power to the low voltage portion of the heating coil module, including supplying power to the display key panel. The input of the switching power supply module is directly connected to L and N of 220V of the mains supply, so that the switching power supply module is standby and also powered. It should be noted that, the electromagnetic heating circuits of the second stage or after the second stage have the same parts as those of the electromagnetic heating circuit of the first stage (or the previous stage), but only the switch power supply module in the electromagnetic heating circuit of the first stage is only required to supply power to the display key panel.
Illustratively, the (second stage) switching power supply module in the second stage electromagnetic heating circuit and the (third stage) switching power supply module in the third stage electromagnetic heating circuit in the embodiment are directly connected with the Lin1 of the mains input, but the 2 nd pin of the input is not directly connected with the Nin1 of the mains input, but is connected with the output of the relay module K1 of the first stage electromagnetic heating circuit. Under the standby condition, the MCU of the display key panel can control the relay module K1 to be disconnected, so that no matter how many furnace ends and switching power supplies are connected, the standby power consumption requirement within 0.5W can be met only when the switching power supply module in the first-stage electromagnetic heating circuit is in a standby state all the time.
In some possible embodiments, the system further comprises a second fuse; one end of the second fuse FS2 is connected to the switching power module, and the other end of the second fuse FS2 is connected to the mains supply.
In particular, in the embodiment, the second fuse FS2 has the same function as the first fuse FS1 described above, and is used to avoid the damage of the circuit or the components caused by the generation of the abnormal current two in the circuit.
In another aspect, an embodiment of the present application provides an induction cooker; the apparatus includes a housing and a built-in electromagnetic heating control system including at least one of the electromagnetic heating control systems of the previous embodiments.
In some possible embodiments, the surface of the housing is provided with a heating panel provided with a number of protrusions protruding from its surface, which protrusions are separated from each other to form a communicating channel. The protrusions are substantially centrally symmetrical with respect to the center of the heating panel to ensure smooth support of the cooker. In addition, the size of the channel is far larger than that of the protrusion, so that the heat of the pan bottom can be rapidly dissipated.
In summary, in addition to the foregoing beneficial effects, compared with the prior art, the present utility model has the following features or advantages:
according to the technical scheme provided by the utility model, under the condition that a plurality of electromagnetic heating circuits exist, the output end of the relay module of the electromagnetic heating circuit of the previous stage is connected to the switching power supply module of the next stage, so that under the standby condition, the switching power supply modules in the electromagnetic heating circuits of the next stage are all powered off, and no standby current exists in a circuit, and therefore, the standby power consumption can be effectively reduced even under the condition that a plurality of furnace heads or electromagnetic heating circuits exist.
In the description of the present specification, reference to the term "one embodiment," "another embodiment," or "certain embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An electromagnetic heating control system is characterized by comprising a display key panel, a first electromagnetic heating circuit and a plurality of second electromagnetic heating circuits; the first electromagnetic heating circuit is connected to the display key panel, and the second electromagnetic heating circuit is connected to the display key panel;
the first electromagnetic heating circuit comprises a switch power supply module, a first relay module, a heat dissipation module, a power supply driving module, a processor module and a heating wire coil module;
one end of the first relay module is connected to the switching power supply module, and the other end of the first relay module is connected to the power supply driving module; one end of the heat dissipation module is connected to the switching power supply module, and the other end of the heat dissipation module is connected to the processor module; one end of an armature in the first relay module is connected with mains supply, and the other end of the armature is connected to the heating wire coil module; the other end of the armature is also connected to a second relay module in the second electromagnetic heating circuit; one end of a coil in the first relay module is connected to the switching power supply module, and the other end of the coil is connected to the power supply driving module; the heating coil module is also connected to the processor module.
2. The electromagnetic heating control system of claim 1, wherein the heating coil module comprises a first fuse, a filter circuit, and a heating coil;
one end of the first fuse is connected to the mains supply, and the other end of the first fuse is connected to the first end of the filter circuit; the other end of the filter circuit is connected to the heating wire coil, and the heating wire coil is also connected to the processor module.
3. The electromagnetic heating control system of claim 2, wherein the filter circuit comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first resistor, a second resistor, a third resistor, and a common mode inductance;
one end of the first capacitor is connected to the other end of the first fuse, and the other end of the first capacitor is connected to the other end of the armature; one end of the first resistor is connected to the other end of the first fuse, the other end of the first resistor is connected to one end of the second resistor, and the other end of the second resistor is connected to one end of the third resistor; the other end of the third resistor is connected to the other end of the armature;
one end of a first inductor in the common mode inductor is connected to the other end of the first fuse, and the other end of the first inductor is connected to one end of the heating wire coil; one end of a second inductor in the common mode inductor is connected to the other end of the armature, and the other end of the second inductor is connected to the other end of the heating wire coil;
one end of the second capacitor is connected to one end of the heating wire coil, and the other end of the second capacitor is connected to the other end of the heating wire coil; one end of the third capacitor is connected to one end of the heating wire coil, and the other end of the third capacitor is grounded; one end of the fourth capacitor is connected to the other end of the heating wire coil, and the other end of the fourth capacitor is grounded.
4. An electromagnetic heating control system according to claim 1, wherein the power supply drive module comprises a first transistor;
the collector of the first triode is connected to the other end of the coil, the base of the first triode is connected to the processor module, and the emitter of the first triode is grounded.
5. The electromagnetic heating control system of claim 1, wherein the heat dissipating module comprises a heat dissipating fan, a second transistor, and a third transistor;
one end of the cooling fan is grounded, and the other end of the cooling fan is connected to the collector electrode of the third triode; the base electrode of the third triode is connected to the collector electrode of the second triode, and the emitter electrode of the third triode is connected to the base electrode of the third triode through a fourth resistor; the emitter of the second triode is grounded, and the base of the second triode is connected to the processor module.
6. The electromagnetic heating control system of claim 1, wherein the output of the switching power supply module comprises a first output pin for providing a 5V voltage and a second output pin for providing a 12V voltage;
the first output pin is connected to the processor module, the second output pin is connected to the first relay module, and the second output pin is also connected to the heat dissipation module.
7. An electromagnetic heating control system according to any of claims 1-6, wherein the processor module comprises an MCU chip.
8. An electromagnetic heating control system according to any of claims 1-6, wherein the system further comprises a second fuse; one end of the second fuse is connected to the switching power supply module, and the other end of the second fuse is connected to the mains supply.
9. An induction hob, characterized in, that it comprises a housing, said housing having at least one electromagnetic heating control system according to any one of the claims 1-7 built in.
10. An induction cooker according to claim 9, wherein the surface of the housing is provided with a heating panel, the heating panel being provided with a plurality of protrusions protruding from the surface thereof, the protrusions being separated from each other to form the communicating channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320117370.8U CN219437179U (en) | 2023-02-06 | 2023-02-06 | Electromagnetic heating control system and induction cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320117370.8U CN219437179U (en) | 2023-02-06 | 2023-02-06 | Electromagnetic heating control system and induction cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219437179U true CN219437179U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320117370.8U Active CN219437179U (en) | 2023-02-06 | 2023-02-06 | Electromagnetic heating control system and induction cooker |
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| CN (1) | CN219437179U (en) |
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2023
- 2023-02-06 CN CN202320117370.8U patent/CN219437179U/en active Active
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