CN110636656B - Induction cooker, pot cover and induction cooker system - Google Patents
Induction cooker, pot cover and induction cooker system Download PDFInfo
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- CN110636656B CN110636656B CN201810645151.0A CN201810645151A CN110636656B CN 110636656 B CN110636656 B CN 110636656B CN 201810645151 A CN201810645151 A CN 201810645151A CN 110636656 B CN110636656 B CN 110636656B
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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
- A47J36/06—Lids or covers for cooking-vessels
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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
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
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- Induction Heating Cooking Devices (AREA)
Abstract
The invention provides an induction cooker, a pot cover and an induction cooker system, wherein the induction cooker comprises a wireless communication module, a control module and a heating coil: the wireless communication module is in communication connection with the control module and is used for receiving a liquid overflow signal in the pot and real-time temperature information in the pot and sending the liquid overflow signal in the pot and the real-time temperature information in the pot to the control module; the control module is respectively connected with the wireless communication module and the heating coil, and is used for controlling the heating coil to stop heating for a preset time when receiving a liquid overflow signal in the pan, and then is used for adjusting the heating power of the heating coil in real time based on real-time temperature information in the pan and a preset temperature change curve in the pan. The induction cooker can continuously finish cooking of food in the pot while preventing liquid in the pot from overflowing, thereby obviously improving the beneficial effect of cooking by a user.
Description
Technical Field
The invention relates to the technical field of electric appliance manufacturing, in particular to an induction cooker, a pot cover and an induction cooker system.
Background
The electromagnetic oven is also called as an electromagnetic oven, and the principle of the electromagnetic oven is an electromagnetic induction phenomenon, namely, alternating current is utilized to generate an alternating magnetic field with constantly changed direction through a coil, and vortex current (the reason can refer to Faraday's law of electromagnetic induction) can appear inside a conductor in the alternating magnetic field, which is caused by the vortex electric field pushing a current carrier (electrons but no iron atoms in a pot) in the conductor to move; the joule heating effect of the eddy current heats the conductor, thereby achieving heating. Because the induction cooker is cheap, simple and convenient to use and high in power, many users like cooking porridge, soup and other food containing soup by using the induction cooker.
The cooking of the food containing the soup can be finished within several minutes to tens of minutes by using the induction cooker in the prior art (the cooking time can be different due to different water amounts of the soup). If the user is cooking soup or porridge, in the whole process of cooking porridge or soup, the user needs to frequently go to the front of the induction cooker to see whether the soup is boiled or overflowed, and if the soup is not boiled, the user needs to continue heating; if the soup is boiled, the user manually reduces the heating power of the induction cooker, and the soup or porridge is braised to be cooked through lower power, so that the soup is prevented from overflowing. If the user steams the fish or steams other foods, the user needs to go to the position near the induction cooker continuously to check whether the power of the induction cooker is proper, and if the duration is too large, the power needs to be reduced; if the temperature is proper, the cooking is continued. The induction cooker in the prior art brings great time waste to users in the cooking process, so that the induction cooker cannot be dedicated to other things.
In view of the foregoing, it is desirable to provide an induction cooker, a lid and an induction cooker system capable of preventing overflow and cooking food simultaneously.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide an induction cooker, a lid, and an induction cooker system that overcome or at least partially solve the above problems.
According to a first aspect of embodiments of the present invention, there is provided an induction cooker including a wireless communication module, a control module, and a heating coil:
the wireless communication module is in communication connection with the control module and is used for receiving a liquid overflow signal in the pot and real-time temperature information in the pot and sending the liquid overflow signal in the pot and the real-time temperature information in the pot to the control module;
the control module is respectively connected with the wireless communication module and the heating coil and is used for controlling the heating coil to stop heating for a preset time when a liquid overflow signal in the pan is received;
the control module is used for adjusting the heating power of the heating coil in real time based on the real-time temperature information in the pan and a preset temperature change curve in the pan.
According to a second aspect of embodiments of the present invention, there is provided a pot lid comprising a water sensor, a temperature sensor and a wireless communication module:
the water immersion type sensor is in communication connection with the wireless communication module, is arranged on the inner side of the pot cover and is used for generating a liquid overflow signal in the pot and sending the liquid overflow signal in the pot to the induction cooker matched with the pot cover through the wireless communication module so as to enable the induction cooker to stop heating for a preset time;
the temperature sensor is in communication connection with the wireless communication module, is arranged on the inner side of the pot cover and is used for collecting real-time temperature information in the pot and sending the real-time temperature information in the pot to the induction cooker matched with the pot cover through the wireless communication module so as to adjust heating power of the induction cooker based on the real-time temperature information in the pot and a preset change curve of the temperature in the pot.
According to a third aspect of embodiments of the present invention, there is provided an induction cooker system including: any one of the induction cookers and any one of the pot covers.
The embodiment of the invention provides an induction cooker, a pot cover and an induction cooker system, wherein the induction cooker can continuously finish cooking of food in a pot while preventing liquid in the pot from overflowing, so that the beneficial effect of cooking of a user is obviously improved.
Drawings
Fig. 1 is a schematic structural diagram of an induction cooker according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pot cover according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a pot cover according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, there is shown an induction cooker of the present invention, which generally comprises a wireless communication module 101, a control module 102, and a heating coil 103:
the wireless communication module 101 is in communication connection with the control module 102 and is used for receiving a liquid overflow signal in the pan and real-time temperature information in the pan and sending the liquid overflow signal in the pan and the real-time temperature information in the pan to the control module 102;
the control module 102 is in communication connection with the wireless communication module 101 and the heating coil 103, and is configured to control the heating coil 103 to stop heating for a preset time when receiving a liquid overflow signal in the pan, and then to adjust the heating power of the heating coil 103 in real time based on real-time temperature information in the pan and a preset temperature change curve in the pan.
Specifically, firstly, the wireless communication module 101 acquires a liquid overflow signal in the pan and real-time temperature information in the pan; wherein, the overflow signal of the liquid in the cooker is obtained by using a water immersion sensor at the inner side of the cooker cover in cooperation with the induction cooker. It is easy to understand that when the water immersion sensor is conducted by the overflowing liquid in the pan, a pan liquid overflowing signal is generated and sent to the wireless communication module 101; or, the water sensor judges whether the overflow liquid in the pan is led out by acquiring the current change of the metal probes at two poles of the water sensor caused by the temperature change, and the embodiment of the invention is not particularly limited. Further, the real-time temperature information in the cooker can be obtained by a temperature sensor arranged on the inner side of the cooker cover matched with the induction cooker, and the embodiment of the invention is not particularly limited. Secondly, after acquiring the liquid overflow signal in the pan and the real-time temperature information in the pan, the wireless communication module 101 sends the liquid overflow signal in the pan and the real-time temperature information in the pan to the control module 102.
Further, when the control module 102 receives a signal of overflowing liquid in the pan, it can be determined that the liquid in the pan has overflowed, and the control module 102 controls the heating coil to stop heating for a preset time period, so that foam generated in the pan falls; then, the control module 102 adjusts the heating power of the heating coil in real time based on the acquired real-time temperature information in the pan, so that the real-time temperature in the pan conforms to a preset change curve of the temperature in the pan, and the beneficial effect of ensuring that the food is normally cooked and not overflowing the liquid is finally achieved.
On the basis of the above embodiment of the present invention, there is provided an induction cooker, wherein the signal of liquid overflow in the pan can be obtained by at least one of the following two ways:
a temperature sensor arranged on the inner side of a cooker cover matched with the induction cooker collects real-time temperature in the cooker to reach the boiling point of water in the use place of the induction cooker, and further a liquid overflow signal in the cooker is obtained;
and the water immersion sensor is arranged on the inner side of the cooker cover matched with the induction cooker for obtaining the water immersion sensor.
It is easy to understand that when the water immersion sensor is conducted by the overflowing liquid in the pan, a pan liquid overflowing signal is generated and sent to the wireless communication module 101; or, the water sensor judges whether the overflow liquid in the pan is led out by acquiring the current change of the metal probes at two poles of the water sensor caused by the temperature change, and the embodiment of the invention is not particularly limited. When the water immersion sensor arranged on the inner side of the pot cover matched with the induction cooker does not send a liquid overflow signal in the pot, but the temperature sensor arranged on the inner side of the pot cover acquires the real-time temperature in the pot to reach the water boiling point of the usage land of the induction cooker, the liquid in the pot can be determined to be about to overflow or overflow is generated, and a liquid overflow signal in the pot is generated. The overflow signal of the liquid in the pan in this embodiment can be a supplement or a parallel scheme for acquiring the overflow signal of the liquid based on the water sensor in the above embodiment of the present invention, and the embodiment of the present invention is not limited specifically herein.
On the basis of the above specific embodiment of the present invention, an induction cooker is provided, wherein the water immersion sensor disposed inside the cooker cover and used in cooperation with the induction cooker is used for generating a liquid overflow signal in the cooker and sending the liquid overflow signal to the wireless communication module of the induction cooker when acquiring a liquid conduction signal; or, the water sensor comprises a two-pole metal probe, and is used for acquiring a first AD current value set of the two-pole metal probe in a preset time period in the heating process of the induction cooker, and obtaining a first variance sigma of the first AD current value set in the preset time period after filtering the first AD current value set1(ii) a The water immersion type sensor is used for collecting a second AD current value set of the two-pole metal probe in the current preset length time period, filtering the second AD current value set and then solving a second variance sigma of the second AD current value set in the preset time period2When σ is2/σ1And when the pressure is greater than the preset threshold value, generating a liquid overflow signal in the pot and sending the liquid overflow signal to the wireless communication module of the induction cooker.
The embodiment of the invention describes two schemes for acquiring a liquid overflow signal in a pot based on a water immersion type sensor; according to the first scheme, a conduction signal is generated by detecting whether a water immersion type sensor is conducted by liquid overflowing from a pot or not; according to the second scheme, the water immersion type sensor comprises two polar metal probes, and the resistance values of the two polar metal probes are not communicated at the communicated temperature, so that the AD current values of the two polar metal probes can be acquired, and the liquid in the pot can be judged to reach the overflow temperature; specifically, a first AD current value set in a preset time period in the process of heating liquid in a pot by an induction cooker is collected firstly, the initial time period of heating the liquid in the pot is taken in the preset time period, because the temperature rise of the liquid in the time period is relatively smooth, and then the first AD current value set is filtered to obtain a first variance sigma of the first AD current value set in the preset time period1(ii) a Secondly, a second AD current value set of the two-pole metal probe in a preset length time period is collected in real time, and a second variance sigma of the second AD current value set in the preset time period is obtained after the second AD current value set is filtered2When σ is2/σ1When the temperature is greater than a preset threshold value, a pot is producedThe inner liquid overflows the signal, and send to the wireless communication module of electromagnetism stove.
The two signals for generating the liquid overflow in the pan have the following differences: according to the first scheme, the liquid overflow signal in the pot can be generated only when the signal generated by liquid foam in the pot simultaneously contacts the two-pole metal probe, and at the moment, the liquid overflow still often occurs in a heating stopping mode; the second scheme is based on the detection of the AD current value of the two-pole metal probe, and obtains the detection result that the temperature in the pot is about to reach the boiling point of the liquid, so as to obtain the overflow signal of the liquid in the pot; the second scheme can well prevent the liquid in the pot from overflowing by adjusting the preset threshold value.
On the basis of the foregoing specific embodiment of the present invention, there is provided an induction cooker, wherein the control module is further configured to: and when the rising rate of the real-time temperature information exceeds a preset threshold value within any preset time period, controlling the heating coil to stop heating.
It can be understood that when liquid is heated in the pan, the rising curve of the real-time temperature in the pan is very gentle, and if the rate of the real-time temperature in the pan exceeds the preset rate threshold value within a certain period of time, it can be considered that the liquid in the pan is about to be or has been burnt out at the moment, and the control module controls the heating coil to stop heating.
On the basis of the above specific embodiment of the present invention, an induction cooker is provided, wherein the control module includes a micro control module MCU and an insulated gate bipolar transistor IGBT; the MCU is used for controlling the heating coil to stop heating by adjusting the IGBT switching state, and then is used for adjusting the heating power of the heating coil in real time by adjusting the IGBT switching state based on real-time temperature information in the pan and a preset temperature change curve in the pan.
A Micro Control Unit (MCU), also called a Single Chip Microcomputer (Single Chip Microcomputer), or a Single Chip Microcomputer, which is disposed inside the induction cooker, can control the switching of the heating coil or the adjustment of the heating power by controlling an Insulated Gate Bipolar Transistor (IGBT).
An Insulated Gate Bipolar Transistor (IGBT) arranged inside the induction cooker is a composite full-control voltage-driven power semiconductor device consisting of a BJT (bipolar junction transistor) and an MOS (insulated gate field effect transistor), and has the advantages of both high input impedance of the MOSFET and low conduction voltage drop of GTR. The GTR saturation voltage is reduced, the current carrying density is high, but the driving current is large; the MOSFET has small driving power, high switching speed, large conduction voltage drop and small current carrying density. The IGBT integrates the advantages of the two devices, and has small driving power and reduced saturation voltage. The method is suitable for being applied to a variable current system with the voltage of 600V or above.
As shown in fig. 2, a pot cover 200 according to an embodiment of the present invention includes a water sensor 201, a temperature sensor 203, and a wireless communication module 202:
the water immersion type sensor 201 is in communication connection with the wireless communication module 202, is arranged on the inner side of the pot cover and is used for generating a liquid overflow signal in the pot, and sending the liquid overflow signal in the pot to the induction cooker matched with the pot cover through the wireless communication module 202 so as to enable the induction cooker to stop heating for a preset time;
the temperature sensor 203 is in communication connection with the wireless communication module 202, is arranged on the inner side of the pot cover, and is used for collecting real-time temperature information in the pot and sending the real-time temperature information in the pot to the induction cooker matched with the pot cover through the wireless communication module 202 so as to adjust heating power of the induction cooker based on the real-time temperature information in the pot and a preset change curve of the temperature in the pot.
In the embodiment of the present invention, the water sensor 201 is used for generating a signal for overflowing liquid in the pan when detecting a conducting signal for overflowing liquid in the pan, and the water sensor 201 is a contact type water sensor and detects the overflowing of liquid in the pan by using a liquid conduction principle. Normally, the two-pole probe of the water immersion type sensor 201 is insulated by air; when the liquid foam in the pan overflows, the two probes are conducted, and the sensor outputs a liquid overflow signal in the pan. The specific structure of the water sensor 201 may be the structure of the following embodiments of the present invention, or may be the structure of the prior art, and the embodiments of the present invention are not limited herein.
On the basis of the above specific embodiment of the present invention, a pot cover is provided, wherein the temperature sensor is used for: when the real-time temperature in the pot reaches the water boiling point of the pot cover use place, a liquid overflow signal in the pot is generated, and the liquid overflow signal in the pot is sent to the induction cooker matched with the pot cover through the wireless communication module so as to enable the induction cooker to stop heating for a preset time.
It is understood that when the water sensor inside the cover is used with the electromagnetic oven and does not send the overflow signal of the liquid inside the pot, but the temperature sensor inside the cover collects the real-time temperature inside the pot to reach the boiling point of the water in the use place of the electromagnetic oven, the overflow of the liquid inside the pot can be determined to be about to occur or to occur, and an overflow signal of the liquid inside the pot is generated. The overflow signal of the liquid in the pan in this embodiment can be a supplement or a parallel scheme for acquiring the overflow signal of the liquid based on the water sensor in the above embodiment of the present invention, and the embodiment of the present invention is not limited specifically herein.
Preferably, the temperature sensor comprises an NTC temperature sensor and a corresponding single chip microcomputer, and when the single chip microcomputer detects that the temperature information sent by the NTC temperature sensor reaches the boiling point of water in the pot cover use place, a liquid overflow signal in the pot is generated.
On the basis of the above specific embodiment of the present invention, a pot cover is provided, wherein the water sensor comprises a first metal sheet, a second metal sheet and a signal processor;
the first metal sheet and the second metal sheet are arranged on the inner side of the pot cover and are not in contact with each other;
the first metal sheet and the second metal sheet are simultaneously in wired electrical connection with the signal processor;
when the first metal sheet and the second metal sheet are communicated by overflowing liquid in the pot, the signal processor generates a pot liquid overflowing signal, and the pot liquid overflowing signal is sent to the induction cooker matched with the pot cover through the wireless communication module so as to stop heating the induction cooker for a preset time;
or the signal processor is used for acquiring a first AD current value set of the first metal sheet and the second metal sheet in a preset time period in the heating process of the induction cooker, filtering the first AD current value set and then solving a second AD current value set in the preset time periodA first variance σ of a set of AD current values1(ii) a The signal processor is used for acquiring a second AD current value set of the first metal sheet and the second metal sheet in the current preset length time period, filtering the second AD current value set and then solving a second variance sigma of the second AD current value set in the preset time period2When σ is2/σ1And when the pressure is greater than the preset threshold value, generating a liquid overflow signal in the pot and sending the liquid overflow signal to the wireless communication module of the induction cooker.
Specifically, the embodiment of the present invention provides a water sensor different from the prior art, which includes a first metal sheet, a second metal sheet and a signal processor, wherein the first metal sheet and the second metal sheet are prevented from contacting with each other in a non-contact manner in a normal state, the two metal sheets may be disposed on the inner side of the lid or on the inner side of the lid in a non-overlapping manner, and when the lid is disposed on the inner side of the lid in an overlapping manner, an insulating sheet should be disposed between the first metal sheet and the second metal sheet, and the specific disposition mode of the embodiment of the present invention is not specifically limited herein.
It is understood that the process of heating the liquid in the boiler to boil is a process of gradually changing the liquid state into the gas state, the liquid is continuously vaporized near the heating part in the boiler in the heating process, bubbles are formed and rise in water, when the bubbles rise to the water surface, the bubbles are broken to form water vapor, and the water vapor is emitted to the liquid surface. Usually, during the process of boiling water, making soup or cooking porridge, a plurality of small water drops are vaporized to form small bubbles which rise and break. In the process that the liquid is gradually boiled, water drops in the pot are gradually vaporized to form bubbles which rise and break to form water vapor, and the water vapor is diffused to the surface of the liquid and is gathered in the pot. Generally, during the process of boiling water, making soup or cooking porridge, water vapor in the pot gradually changes from small to large and gathers in the pot. During this process, the pressure inside the pan also changes. Generally, in the process of boiling water, making soup or cooking porridge, the water vapor in the pot is little at the beginning; as the temperature of the liquid in the pot is gradually increased, the water vapor in the pot is gradually increased, and when the water in the pot is completely boiled, the water vapor in the pot is the most.
Because the food materials contain more or less protein or starch during cooking, the food materials are dissolved in water to play the role of a surfactant or increase the viscosity of the water during the cooking process. When the water in the pot is boiled and steam flows out of the water, like soap bubbles, bubbles which have large surface tension and are difficult to break are blown out, the bubbles gather more and more along with the increase of the steam, the liquid level in the pot also gradually rises, and when the bubbles rise to the edge of the pot, the bubbles overflow from the pot.
Meanwhile, the soup or porridge in the pot contains a large amount of protein and starch, so that the conductivity of the soup or porridge is high, when bubbles overflowing outwards contact the first metal sheet and the second metal sheet arranged in the pot cover at the same time, the electrodes are switched on, the signal processor generates a liquid overflow signal in the pot, and the liquid overflow signal in the pot is sent to the induction cooker matched with the pot cover through the wireless communication module so as to stop heating the induction cooker for a preset time.
The signal processor may be implemented by a single chip, and the embodiment of the present invention is not limited herein.
Referring to fig. 3, on the basis of the above embodiment of the present invention, a pot 300 is proposed, in which a first metal sheet 301 and a second metal sheet 302 are stacked on the inner side of the pot cover, and an insulating gasket 303 is disposed between the first metal sheet and the second metal sheet. Meanwhile, the first metal plate 301 and the second metal plate 302 are connected to a signal processor, but the position of the signal processor is not particularly limited in the embodiment of the present invention.
It is easy to think that in the embodiment of the present invention, both metal sheets need to have a relatively large contact area exposed to air so as to be convenient for sensing the overflow signal of the liquid in the pan in time. The shapes of the metal sheet and the insulating spacer are not particularly limited in the embodiments of the present invention.
On the basis of the above specific embodiment of the present invention, an induction cooker system is provided, which includes any one of the induction cookers and any one of the pot covers.
Finally, the embodiments of the present invention are merely preferred embodiments, and are not intended to limit the scope of the embodiments of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.
Claims (6)
1. The induction cooker is characterized by comprising a wireless communication module, a control module and a heating coil:
the wireless communication module is in communication connection with the control module and is used for receiving a liquid overflow signal in the pot and real-time temperature information in the pot and sending the liquid overflow signal in the pot and the real-time temperature information in the pot to the control module;
the control module is respectively connected with the wireless communication module and the heating coil and is used for controlling the heating coil to stop heating for a preset time when a liquid overflow signal in the pan is received; the control module is used for adjusting the heating power of the heating coil in real time based on the real-time temperature information in the pot and a preset temperature change curve in the pot;
the liquid overflow signal in the pan is obtained by the following method: a water immersion sensor arranged on the inner side of the cooker cover matched with the induction cooker is used for obtaining the water immersion information;
the water immersion sensor comprises a two-pole metal probe, and is used for collecting a first AD current value set of the two-pole metal probe in a preset time period in the initial heating process of the induction cooker, filtering the first AD current value set and then calculating a first variance sigma of the first AD current value set in the preset time period in the initial heating process1(ii) a Then, the water immersion type sensor is used for collecting a second AD current value set of the two-pole metal probe in a preset time period in the current heating process of the induction cooker, and a second variance sigma of the second AD current value set in the preset time period in the current heating process is obtained after the second AD current value set is filtered2When σ is2/σ1When the pressure is greater than the preset threshold value, generating a liquid overflow signal in the pot and sending the liquid overflow signal to a wireless communication module of the induction cooker;
the control module is further configured to: and when the rising rate of the real-time temperature information exceeds a preset threshold value within any preset time period, controlling the heating coil to stop heating.
2. The induction cooker according to claim 1, wherein the control module comprises a micro control Module (MCU) and an Insulated Gate Bipolar Transistor (IGBT); the MCU is used for controlling the heating coil to stop heating by adjusting the IGBT switching state, and then is used for adjusting the heating power of the heating coil in real time by adjusting the IGBT switching state based on real-time temperature information in the pan and a preset temperature change curve in the pan.
3. The utility model provides a pot cover, its characterized in that includes water logging formula sensor, temperature sensor and wireless communication module:
the water immersion type sensor is in communication connection with the wireless communication module, is arranged on the inner side of the pot cover and is used for generating a liquid overflow signal in the pot and sending the liquid overflow signal in the pot to the induction cooker matched with the pot cover through the wireless communication module so as to enable the induction cooker to stop heating for a preset time;
the temperature sensor is in communication connection with the wireless communication module, is arranged on the inner side of the pot cover and is used for acquiring real-time temperature information in the pot and sending the real-time temperature information in the pot to the induction cooker matched with the pot cover through the wireless communication module so as to adjust heating power of the induction cooker based on the real-time temperature information in the pot and a preset change curve of the temperature in the pot;
the water sensor comprises a first metal sheet, a second metal sheet and a signal processor;
the first metal sheet and the second metal sheet are arranged on the inner side of the pot cover and are not in contact with each other;
the first metal sheet and the second metal sheet are simultaneously in wired electrical connection with the signal processor;
firstly, the signal processor is used for collecting a first AD current value set of a first metal sheet and a second metal sheet in a preset time period in the initial heating process of the induction cooker, filtering the first AD current value set, and then solving a first variance sigma of the first AD current value set in the preset time period in the initial heating process1(ii) a Then, the signal processor is used for collecting a second AD current value set of the first metal sheet and the second metal sheet in a preset time period in the current heating process of the induction cooker and carrying out AD current collection on the second metal sheetAfter the current value set is filtered, a second variance sigma of a second AD current value set in a preset time period in the current heating process is solved2When σ is2/σ1And when the pressure is greater than the preset threshold value, generating a liquid overflow signal in the pot and sending the liquid overflow signal to the wireless communication module of the induction cooker.
4. The lid according to claim 3, characterized in that the temperature sensor is adapted to: when the real-time temperature in the pot reaches the water boiling point of the pot cover use place, a liquid overflow signal in the pot is generated, and the liquid overflow signal in the pot is sent to the induction cooker matched with the pot cover through the wireless communication module so as to enable the induction cooker to stop heating for a preset time.
5. The lid according to claim 3, wherein the first metal sheet and the second metal sheet are stacked inside the lid, and an insulating spacer is provided between the first metal sheet and the second metal sheet.
6. An induction cooker system, characterized by comprising the induction cooker of any one of claims 1 to 2 and the lid of any one of claims 3 to 5.
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| CN201810645151.0A CN110636656B (en) | 2018-06-21 | 2018-06-21 | Induction cooker, pot cover and induction cooker system |
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| CN201810645151.0A CN110636656B (en) | 2018-06-21 | 2018-06-21 | Induction cooker, pot cover and induction cooker system |
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