CN111743424A - Insulation board, control device, control method and electronic cooking appliance - Google Patents
Insulation board, control device, control method and electronic cooking appliance Download PDFInfo
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- CN111743424A CN111743424A CN201910248718.5A CN201910248718A CN111743424A CN 111743424 A CN111743424 A CN 111743424A CN 201910248718 A CN201910248718 A CN 201910248718A CN 111743424 A CN111743424 A CN 111743424A
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- 238000009413 insulation Methods 0.000 title claims abstract description 64
- 238000010411 cooking Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims description 66
- 238000001514 detection method Methods 0.000 claims description 38
- 238000004321 preservation Methods 0.000 claims description 32
- 230000006698 induction Effects 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J39/00—Heat-insulated warming chambers; Cupboards with heating arrangements for warming kitchen utensils
- A47J39/02—Dish-warmers; Devices to keep food hot
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/2483—Warming devices with electrical heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
Abstract
The invention relates to the field of cooking appliances, and discloses an insulation board, a control device, a control method and an electronic cooking appliance. Therefore, the use of the user is facilitated, and the user experience is improved.
Description
Technical Field
The invention relates to the field of cooking appliances, in particular to a heat insulation plate, a control device, a control method and an electronic cooking appliance.
Background
The existing electronic cooking equipment such as an induction cooker, an infrared oven, a hot plate oven and the like cook food materials in an electric heating mode, a user often needs to use a heat preservation function for the food materials when using the equipment, for example, when the user cooks the food materials, the prepared dish can be placed on one side, if the user is easy to cool after a long time, especially under the condition of cold weather, the prepared dish needs to be preserved at the moment, and the existing equipment does not have the function of preserving the heat of the food materials, so that inconvenience is brought to the user.
Disclosure of Invention
The embodiment of the invention aims to provide an insulation board, a control device, a control method and an electronic cooking appliance, and aims to solve the problem that in the prior art, electronic cooking equipment does not have an insulation function simultaneously when cooking food materials, so that inconvenience is brought to users.
In order to achieve the above object, the present invention provides an insulation board for an electronic cooking appliance, wherein the insulation board is disposed at one side of the electronic cooking appliance, and a heating wire is disposed inside the insulation board to insulate or heat food in a container.
Optionally, the heat insulation plate can be accommodated and arranged on one side of the electronic cooking appliance.
Optionally, a heat preservation button is arranged on an operation panel of the electronic cooking appliance and used for receiving a heat preservation instruction.
In order to achieve the above object, the present invention further provides a control device for the insulation board of any one of the above aspects, wherein the control device comprises a controller, an electronic switch and a current detection module;
the current detection module is configured to detect the working current of the heating wire;
the controller is configured to: obtaining information indicating the operating current from a current detection module; comparing the working current with a first preset current threshold; and under the condition that the working current is smaller than a first preset current threshold value, the electronic switch is controlled to be switched off so as to switch off the power supply to supply power to the heating wire.
Optionally, the controller is further configured to:
and under the condition that the working current is greater than a second preset current threshold value, the electronic switch is controlled to be closed so as to cut off the power supply to the heating wire.
Optionally, the controller is further configured to: judging whether the heat-insulation board is unfolded or not; and under the condition that the heat insulation plate is unfolded, the electronic switch is controlled to be switched on, so that the power supply supplies power to the heating wire.
Optionally, the electronic switch comprises a first relay and a second NPN transistor;
two ends of a switch of the first relay are two ends of a switch of the electronic switch, one end of a coil of the first relay is connected with the positive electrode of the direct-current power supply, the other end of the coil of the first relay is connected with a collector electrode of the second NPN triode, and a base electrode of the second NPN triode is a control end of the electronic switch.
Optionally, the current detection module comprises a first resistor;
the two ends of the first resistor are respectively the two ends of the current detection module, and one end of the first resistor is the output end of the current detection module.
In order to achieve the above object, the present invention further provides an electronic cooking appliance, which includes the above insulation board and the above control device.
Optionally, the electronic cooking appliance is one of an induction cooker, an infrared oven and a hot plate oven.
In order to achieve the above object, the present invention further provides a control method for an insulation board, the insulation board being applied to an electronic cooking appliance, wherein the control method comprises:
receiving a heat preservation instruction;
controlling a heating wire of the heat-insulation plate to be connected into a power supply circuit according to a heat-insulation instruction to obtain the working current of the heating wire;
and under the condition that the working current is smaller than a first preset current threshold value, the heating wire is controlled to be disconnected from the power supply circuit.
Optionally, the control method further includes:
under the condition that the working current is larger than a second preset current threshold value, the heating wire of the heat insulation plate is controlled to supply heat
The electrical circuit is open.
Optionally, the control method further includes:
judging whether the heat-insulation board is unfolded or not;
and under the condition that the heat insulation plate is unfolded, controlling the heating wire of the heat insulation plate to be connected into the power supply circuit.
According to the heat insulation board for the electronic cooking appliance, the heat insulation board is arranged on one side of the electronic cooking appliance, so that a user can place a container for containing food on the heat insulation board for heat insulation after the food is cooked by the electronic cooking appliance, the cooked food is prevented from being cooled when other food is cooked for a long time, or the cooled food can be heated in a separate heating mode. Therefore, the use of the user is facilitated, and the user experience is improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 to 3 are related schematic structural diagrams of the insulation board according to the embodiment of the invention;
fig. 4 and 5 are circuit diagrams of a control device of an insulation board according to an embodiment of the present invention;
fig. 6 is a flowchart of a control method for an insulation board according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention first provides an insulation board for an electronic cooking appliance, as shown in fig. 1 to 3, an insulation board 30 is disposed at one side of the electronic cooking appliance 10, and a heating wire 31 is disposed inside the insulation board 30 to insulate or heat food in a container 32.
Through setting up this heated board 30 for after the user finishes food through the culinary art of electron cooking utensil 10, can place the container 32 that holds food and keep warm on the heated board 30, prevent the food cooling of having cooked when cooking other food time of a specified duration, perhaps will have cooled food heating through the mode of individual heating. Therefore, the use of the user is facilitated, and the user experience is improved.
Specifically, a plurality of containers 32, such as dishes, etc., for holding food may be simultaneously placed on the thermal insulation plate 30. The electronic cooking appliance 10 includes a flat electronic cooking appliance 10 such as an induction cooker, an infrared oven or a hot plate oven, and the heat insulation board 30 may be accommodated in one side of the electronic cooking appliance 10, for example, folded or unfolded in one side of the electronic cooking appliance 10 in a manner that a horizontal pivot shaft can rotate up and down, or horizontally rotated by a vertical pivot shaft, or accommodated in the bottom of the electronic cooking appliance 10 in a manner that a guide rail slides.
Preferably, in the drawings, the electronic cooking appliance 10 is an induction cooker, and the heat insulation board 30 is vertically rotatable with respect to the induction cooker, and is folded at the bottom of the induction cooker when not in use, and is unfolded at one side of the induction cooker when in use. After the user places the food on the panel of the induction cooker through the cooker 20 and finishes cooking, the food is contained in the container 32, and the container 32 is placed on the heat-insulating plate 30 to keep the heat of the food, so that the user can continue to cook the food materials conveniently, and the cooked food can not be cooled.
Further, a heat preservation key 11 can be arranged on the electronic cooking appliance 10 to receive a heat preservation instruction, as shown in fig. 1, the heat preservation key 11 for independently controlling the heat preservation board 30 to work is arranged, when the heat preservation board 30 needs to work, the heat preservation instruction received by the key supplies power to the heat preservation board 30, and the internal heating wire 31 generates heat to preserve heat or heat. Of course, the independent heat preservation button 11 may not be provided, the heat preservation instruction may be received by an existing button on the electronic cooking appliance 10 in a combined manner, or a manner of working in linkage with the electronic cooking appliance 10 may be adopted, and when the electronic cooking appliance 10 works, the heat preservation board 30 is automatically controlled to work, so as to simultaneously preserve heat of food.
The invention also provides a control device for the heat-insulating board, as shown in fig. 4, the control device comprises a controller, an electronic switch 332 and a current detection module 331;
the current detection module 331 is configured to detect an operating current of the heater R2;
the controller is configured to: obtaining information indicating the operating current from the current detection module 331 and comparing the operating current with a first preset current threshold; in the case that the operating current is smaller than the first preset current threshold, the electronic switch 332 is controlled to be turned off to disconnect the power supply from supplying power to the heating wire R2.
Specifically, in fig. 4, a control end of the electronic switch 332 is connected to a controller, that is, an MCU13, one end of the switch of the electronic switch 332 is connected to one end of the heating wire R2, the other end of the switch of the electronic switch 332 is connected to one pole of the power supply, one end of the current detection module 331 is connected to the other end of the heating wire R2, the other end of the current detection module 331 is connected to the other pole of the power supply, and an output end of the current detection module 331 is connected to the controller.
Specifically, the control device further includes a first rectifying circuit that rectifies the input ac power into dc power to be input to the electronic switch 332 for supplying power to the heater R2.
Through setting up current detection module 331 in controlling means, can real-time detection heater R2's operating current to this discernment heater R2 is normal whether work itself, can compare with first preset current threshold value through the operating current who detects, if be less than this first preset current threshold value, then can confirm for heater R2 work inefficacy, if break off, therefore control electronic switch 332 disconnection this moment, no longer supply power to heater R2, and exportable relevant fault information makes things convenient for the user to look over. For example, the normal operating current of the heating wire R2 is 5A, the first preset current threshold value may be set to 0.5A, and when the operating current thereof is detected to be less than 0.5A, it may be determined that the heating wire R2 has failed, and thus the fault information is output and the heating wire R2 is no longer powered.
Further, the controller may be further configured to: in the case that the operating current is greater than the second preset current threshold, the electronic switch 332 is controlled to close to disconnect the power supply to the heating wire R2. In this case, it is determined whether the operating current of the heater R2 is too high due to a short circuit, and therefore, the power supply to the heater R2 needs to be cut off in time to avoid damaging the electronic switch 332 and other devices where the power supply circuit is located.
Further, the controller is further configured to:
judging whether the heat-insulation board is unfolded or not; when the heat insulation board is judged to be unfolded, the electronic switch 332 is controlled to be turned on, so that the power supply supplies power to the heating wire R2.
When control heated board heating or heat preservation, need supply power to it under the condition that the heated board expandes, heating under the avoided heated board folding condition leads to the waste of the resource that generates heat, avoids generating heat simultaneously to make its shell warp and arouse the conflagration even to the electron cooking utensil heating of connecting the heated board to avoid the accident.
When detecting the heated board and whether launching, can increase in the circuit at above-mentioned controlling means place and launch detection module and realize, if the detection circuitry based on micro-gap switch, when the heated board launches, contradict to micro-gap switch and make it switch on, get into and make the controller detect micro-gap switch's switching on to this realizes the detection that the heated board launched.
Specifically, as shown in fig. 4, a control circuit of the control device is connected to a control circuit of the electronic cooking appliance where the heat insulation board is located, and if the electronic cooking appliance is an induction cooker, the control device is connected to the control circuit of the induction cooker, and the control device and the induction cooker can share the above controller, i.e., the MCU13 in the drawing.
Specifically, the electronic switch 332 includes a first relay RY1 and a second NPN transistor Q2; two ends of the switch of the first relay RY1 are two ends of the switch of the electronic switch 332, one end of the coil of the first relay RY1 is connected with the positive electrode of the direct-current power supply, the other end of the coil of the first relay RY1 is connected with the collector of the second NPN triode Q2, and the base of the second NPN triode Q2 is the control end of the electronic switch 332.
The current detection module 331 includes a first resistor R1; two ends of the first resistor R1 are respectively two ends of the current detection module 331 for detection, and one end of the first resistor R1 is an output end of the current detection module 331.
The first rectifying circuit comprises a second diode D2 and a third diode D3, wherein the anode of the second diode D2 and the anode of the third diode D3 are respectively connected with one input pole of an alternating current power supply, and the cathode of the second diode D2 and the cathode of the third diode D3 are connected to output direct current.
The working principle of the control device is as follows:
the MCU13 outputs high level through a pin P2 according to a heat preservation instruction of a user, so that a second NPN triode Q2 is conducted, a coil of the relay is electrified, a switch of the relay is conducted, direct current rectified and output from a second diode D2 and a third diode D3 supplies power to a heating wire R2 through the switch, a second resistor is connected in series in a power supply loop of the heating wire R2, the value of the second resistor can be selected to be a high-power sampling resistor between 1m omega and 1 omega, so that voltage drop is generated on the second resistor, the P1 pin of the voltage output value MCU13 reflects the magnitude of current passing through the heating wire R2, when the voltage value is smaller than a first preset voltage threshold value according to the MCU13, namely the working current of the corresponding heating wire R2 is smaller than the first preset current threshold value, the working of the heating wire R2 is judged to be failed, therefore, the second NPN triode Q2 is controlled to be disconnected, so as to disconnect the power supply to the heating wire R2, and further can output fault alarm information. And if the voltage value is greater than a second preset voltage threshold value, namely the working current of the corresponding heating wire R2 is greater than a second preset current threshold value, the heating wire R2 is identified as overcurrent, and the second NPN triode Q2 is controlled to be disconnected so as to disconnect the power supply to the heating wire R2, and further fault alarm information can be output.
Further, before the MCU13 receives a heat preservation command from a user and controls the conduction of the second NPN transistor Q2, it is further detected by a circuit of the deployment detection module that a voltage is sometimes input to the P5 pin, so as to detect whether the heat preservation board is deployed, and only when it is determined that the heat preservation board is deployed, the second NPN transistor Q2 is controlled to be conducted according to the heat preservation command to supply power to the heater R2.
According to the control device of the heat insulation board, the current detection module 331 is arranged between the electronic switches 332 for supplying power to the heat insulation board, so that whether the heating wire R2 is in a failure or overcurrent state during working can be identified, the electronic switches 332 are controlled to be turned off and turned off to cut off power supply to the heating wire R2 and output fault alarm information, whether the heat insulation board is unfolded or not is further identified through the unfolding detection module, and the electronic switches 332 are controlled to be turned on to supply power to the heating wire R2 only under the unfolding condition. With this fault detection who has realized heater R2, make its work under safe condition, avoided the heated board to be in moreover and made its work generate heat under fold condition, avoided the emergence because of the accident that generates heat.
The present invention further provides an electronic cooking appliance, which includes the above-mentioned control device for the heat-insulating board, as shown in fig. 4 and 5, the control circuit of the electronic cooking appliance includes, in addition to the related circuits of the above-mentioned control device for the heat-insulating board, related circuits for cooking, taking the electronic cooking appliance as an example, the related circuits are control circuits for an induction cooker, a controller in the control circuits is shared with a controller in the above-mentioned control device for the heat-insulating board, the control circuit for the induction cooker further includes an electromagnetic heating module 12, the electromagnetic heating module 12 specifically includes a second rectification circuit 122 and an oscillation and power control unit 121, the second rectification circuit 122 rectifies input alternating current, outputs direct current to power the power control unit, the oscillation and power control unit 121 forms a resonant circuit through a switching tube, a coil panel, a capacitor and other components thereof, so that the parameter eddy current of the coil panel parameter electromagnetic field at the bottom of the cooker generates heat to achieve the purpose of cooking food.
Specifically, the second rectifying circuit 122 is a bridge rectifying circuit, and may be formed by four rectifying diodes with discrete high power or an integrated rectifying bridge stack, so as to perform bridge rectification and output direct current.
The oscillation and power control unit 121 includes a first capacitor C1, a second capacitor C2, a third capacitor C3, an inductor L1, a coil panel L2, and a first IGBT tube Q1. The inductor L1 and the second capacitor C2 are filtering energy storage parts, the inductor of the coil panel L2 and the third capacitor C3 form a resonant circuit, the first IGBT tube Q1 is an excitation source switching tube of the resonant part, the first IGBT tube Q1 is controlled by a PWM (pulse width modulation) signal output by the MCU to switch at a high speed, the resonant circuit generates oscillation, induced electromotive force is generated on the coil panel L2, and the induced electromotive force generates heat at the bottom parameter eddy of the cookware.
Further, the electromagnetic heating module 12 may further include a current detection unit 123, where the current detection unit 123 is configured to detect a working current of the first IGBT Q1, and control a pulse width value of the PWM signal in time according to the working current, so as to avoid damage caused by an excessive working current.
Furthermore, the control circuit of the electronic cooking appliance may further include a voltage detection module 14 for detecting an input ac power voltage, the MCU may control the switch of the first IGBT Q1 in time according to the voltage, and modulate the pulse width of the PWM signal in real time according to the voltage to output the power set by the user, and further, the control circuit may close the first IGBT Q1 to operate when the voltage is too high, and output related alarm information to avoid overvoltage damage.
The invention also provides a control method for the heat insulation plate, wherein the heat insulation plate is applied to an electronic cooking appliance, and as shown in fig. 6, the control method comprises the following steps:
step S10, receiving a heat preservation instruction;
step S20, controlling the heating wire of the heat preservation plate to be connected to a power supply circuit according to the heat preservation instruction to obtain the working current of the heating wire;
and step S30, under the condition that the working current is smaller than the first preset current threshold, the heating wire is controlled to be disconnected from the power supply circuit.
In step S10, a separate heat-preservation button may be provided on the control panel of the electronic cooking appliance, and the heat-preservation button may receive a heat-preservation command input by the user, or the heat-preservation function may be automatically turned on when the electronic cooking appliance is operated.
In steps S20 and S30, by detecting the operating current of the heater and comparing the current with a first preset current threshold, if the current is smaller than the first preset current threshold, it can be determined that the heater fails to operate, such as a circuit is broken, so that the power supply to the heater is cut off, and related fault information can be output for the user to check. For example, the normal operating current of the heating wire is 5A, the first preset current threshold value can be set to 0.5A, and when the operating current of the heating wire is detected to be less than 0.5A, the heating wire can be judged to be failed, so that fault information is output and the heating wire is not powered any more. Therefore, whether the working state of the heating wire is abnormal or not can be found in time, and alarm information is output when the working state is abnormal, so that a user can maintain the heating wire in time.
Further, the control method further includes: and under the condition that the working current is greater than a second preset current threshold value, controlling the heating wire of the heat insulation plate to be disconnected from the power supply circuit. In this case, it is determined whether the working current of the heater is too high due to a short circuit, and therefore, the power supply of the heater needs to be cut off in time, so as to avoid damaging the device where the circuit supplying power to the heater is located.
Further, the control method further includes:
step S40, judging whether the heat insulation board is unfolded or not;
and step S50, controlling the heating wire of the heat insulation board to be connected to the power supply circuit under the condition that the heat insulation board is judged to be unfolded.
When control heated board heating or heat preservation, need supply power to it under the condition that the heated board expandes, heating under the avoided heated board folding condition leads to the waste of the resource that generates heat, avoids generating heat simultaneously to make its shell warp and arouse the conflagration even to the electron cooking utensil heating of connecting the heated board to avoid the accident.
When detecting the heated board and whether launching, can increase in the circuit at above-mentioned controlling means place and launch detection module and realize, if the detection circuitry based on micro-gap switch, when the heated board launches, contradict to micro-gap switch and make it switch on, get into and make the controller detect micro-gap switch's switching on to this realizes the detection that the heated board launched.
According to the control method for the heat insulation board, the working current of the heat insulation board is obtained in the working process of the heat insulation board, so that whether the heating wire is in a failure or overcurrent state during working can be identified, the power supply to the heating wire is cut off, fault alarm information is output, whether the heat insulation board is unfolded or not is further identified through the unfolding detection module, and the power supply is controlled only under the unfolding condition. With this fault detection who has realized the heater, make its work under safe condition, avoided the heated board to be in moreover and made its work generate heat under fold condition, avoided the emergence because of the accident that generates heat and produce.
Embodiments of the present application further provide a computer program product, which includes program instructions, and when the program instructions are executed by a controller, the controller can implement the control method for the heat-insulating board described in any of the above embodiments.
Embodiments of the present application also provide a storage medium having computer readable instructions stored thereon, which when executed by a controller, enable the controller to perform the control method for the insulation board described in any of the above embodiments.
Those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments may be implemented by a program to instruct related hardware, where the program is stored in a storage medium and includes several instructions to enable a (may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, various different embodiments of the present application may be arbitrarily combined with each other, and the embodiments of the present application should be considered as disclosed in the embodiments of the present application as long as the idea of the embodiments of the present application is not violated.
Claims (13)
1. The utility model provides an heated board for electron cooking utensil which characterized in that, the heated board set up in one side of electron cooking utensil, the inside heater that is provided with of heated board to keep warm or heat the food in the container.
2. The insulation board of claim 1, wherein the insulation board is receivable in a side of the electronic cooking appliance.
3. The heat preservation plate according to claim 1, wherein a heat preservation button is arranged on an operation panel of the electronic cooking appliance and used for receiving a heat preservation instruction.
4. A control device for a thermal insulation board according to any one of claims 1 to 3, characterized in that the control device comprises a controller, an electronic switch and a current detection module;
the current detection module is configured to detect an operating current of the heating wire;
the controller is configured to:
obtaining information indicative of the operating current from the current detection module;
comparing the working current with a first preset current threshold;
and under the condition that the working current is smaller than the first preset current threshold value, the electronic switch is controlled to be switched off so as to switch off a power supply to supply power to the heating wire.
5. The control apparatus of claim 4, wherein the controller is further configured to:
and under the condition that the working current is greater than a second preset current threshold value, controlling the electronic switch to be closed so as to cut off the power supply to the heating wire.
6. The control apparatus of claim 4, wherein the controller is further configured to:
judging whether the insulation board is unfolded or not;
and under the condition that the heat insulation plate is judged to be unfolded, the electronic switch is controlled to be switched on, so that a power supply supplies power to the heating wire.
7. The control device of claim 4, wherein the electronic switch comprises a first relay and a second NPN transistor;
two ends of a switch of the first relay are two ends of a switch of the electronic switch, one end of a coil of the first relay is connected with the positive electrode of the direct-current power supply, the other end of the coil of the first relay is connected with a collector electrode of the second NPN triode, and a base electrode of the second NPN triode is a control end of the electronic switch.
8. The control device of claim 4, wherein the current detection module comprises a first resistor;
the two ends of the first resistor are respectively the two ends of the current detection module, and one end of the first resistor is the output end of the current detection module.
9. An electronic cooking appliance, characterized in that it comprises an insulating board according to any one of claims 1 to 3 and a control device according to any one of claims 4 to 8.
10. The electronic cooking appliance of claim 9, wherein the electronic cooking appliance is one of an induction cooker, an infrared oven, and a hot plate oven.
11. A control method for an insulation board applied to an electronic cooking appliance, characterized by comprising:
receiving a heat preservation instruction;
controlling a heating wire of the heat-insulation plate to be connected into a power supply circuit according to the heat-insulation instruction to obtain the working current of the heating wire;
and under the condition that the working current is smaller than a first preset current threshold value, the heating wire is controlled to be disconnected from the power supply circuit.
12. The control method according to claim 11, characterized by further comprising:
and under the condition that the working current is greater than a second preset current threshold value, controlling the heating wire of the heat insulation plate to be disconnected from the power supply circuit.
13. The control method according to claim 11, characterized by further comprising:
judging whether the insulation board is unfolded or not;
and under the condition that the heat insulation plate is judged to be unfolded, controlling a heating wire of the heat insulation plate to be connected into the power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248718.5A CN111743424A (en) | 2019-03-29 | 2019-03-29 | Insulation board, control device, control method and electronic cooking appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248718.5A CN111743424A (en) | 2019-03-29 | 2019-03-29 | Insulation board, control device, control method and electronic cooking appliance |
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| CN111743424A true CN111743424A (en) | 2020-10-09 |
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| CN201910248718.5A Pending CN111743424A (en) | 2019-03-29 | 2019-03-29 | Insulation board, control device, control method and electronic cooking appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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