CN114198783B - Electromagnetic heating device and control method thereof - Google Patents
Electromagnetic heating device and control method thereof Download PDFInfo
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- CN114198783B CN114198783B CN202010986510.6A CN202010986510A CN114198783B CN 114198783 B CN114198783 B CN 114198783B CN 202010986510 A CN202010986510 A CN 202010986510A CN 114198783 B CN114198783 B CN 114198783B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 8
- 230000000630 rising effect Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 6
- 230000006698 induction Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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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
- F24C7/06—Arrangement or mounting of electric heating elements
- F24C7/067—Arrangement or mounting of electric heating elements on ranges
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The embodiment of the application discloses an electromagnetic heating device and a control method thereof, wherein the electromagnetic heating device comprises a control cavity for generating an electromagnetic field, a main control unit, a cooling fan, an electromagnetic wire coil, a circuit board and a temperature sensor, wherein the cooling fan, the electromagnetic wire coil, the circuit board and the temperature sensor are arranged in the control cavity; the temperature sensor comprises a heating temperature sensor and/or a safety temperature sensor, and the control method comprises the following steps: starting the electromagnetic heating device, and acquiring an initial temperature T0 of the main control unit during starting by a temperature sensor; comparing the initial temperature T0 with the operating temperature; the working temperature comprises a first working temperature T1 and a second working temperature T2; when the initial temperature T0 is smaller than the first working temperature T1, the cooling fan is turned off, and the temperature in the control cavity is increased; when the initial temperature T0 is greater than the second working temperature T2, the cooling fan is started and whether the temperature sensor is damaged is judged according to the temperature signal detected by the temperature sensor. According to the embodiment, the temperature rising speed is improved, the false alarm probability is reduced, and the user experience is improved.
Description
Technical Field
The present disclosure relates to cooking apparatus control technologies, and in particular, to an electromagnetic heating device and a control method thereof.
Background
The conventional induction cooker composition is shown in fig. 1: a represents a temperature sensor, B represents a wire coil, C represents a main control board, D represents a display board, and E represents a fan.
When the conventional induction cooker works normally, the fan is always in a running state, so that better heat dissipation can be achieved.
The current use environment of the induction cooker has areas with high temperature and areas with low temperature. In some areas with low air temperature, when people use the induction cooker, the temperature of the induction cooker is low, and meanwhile, the fan dissipates heat, so that the temperature rise in the machine is too slow, and the temperature sensor can give out an alarm or even stop working.
Disclosure of Invention
The embodiment of the application provides an electromagnetic heating device and a control method thereof, which can enable the electromagnetic heating device to quickly heat up in a low-temperature environment, reduce the low-temperature false alarm probability of a temperature sensor and improve the user experience.
The embodiment of the application provides a control method of an electromagnetic heating device, which can comprise a control cavity for generating an electromagnetic field, a main control unit, a cooling fan, an electromagnetic wire coil, a circuit board and a temperature sensor, wherein the cooling fan, the electromagnetic wire coil, the circuit board and the temperature sensor are arranged in the control cavity; the temperature sensor includes a heating temperature sensor and/or a safety temperature sensor, and the control method may include:
starting the electromagnetic heating device, and acquiring an initial temperature T0 at the starting time by the main control unit through the temperature sensor;
comparing the initial temperature T0 with a preset working temperature; the operating temperature includes: a first operating temperature T1 and a second operating temperature T2; the second working temperature T2 is greater than or equal to the first working temperature T1;
when the initial temperature T0 is smaller than the first working temperature T1, the main control unit turns off the cooling fan so as to heat through the electromagnetic wire coil and/or a heating element on the circuit board, and the temperature in the control cavity is increased;
when the initial temperature T0 is greater than the second working temperature T2, the main control unit starts the cooling fan and judges whether the temperature sensor is damaged according to a temperature signal detected by the temperature sensor.
In an exemplary embodiment of the present application, the method may further include: after heating the control cavity for a preset time period t, judging whether the temperature sensor is damaged or not according to the temperature signal detected by the temperature sensor.
In an exemplary embodiment of the present application, the preset time period t may satisfy: t is more than or equal to 10s and less than or equal to 3min.
In an exemplary embodiment of the present application, the first operating temperature T1 may satisfy: t1 is less than or equal to 10 ℃; the second operating temperature T2 may satisfy: t2 is more than or equal to 5 ℃ and less than or equal to 20 ℃.
In an exemplary embodiment of the present application, each temperature sensor corresponds to a temperature resistance table, where the temperature resistance table is a table of correspondence between temperatures and resistance values;
the method may further comprise: calculating a first resistance corresponding to the working temperature of the component measured by each temperature sensor according to the temperature resistance table; and dividing the voltage by the first resistance and the resistance of a preset voltage dividing resistor to obtain an AD value corresponding to the first resistance.
In an exemplary embodiment of the present application, the safety temperature sensor may include: an Insulated Gate Bipolar Transistor (IGBT) temperature sensor for acquiring the temperature of the IGBT on the circuit board and/or a wire coil temperature sensor for acquiring the temperature of the electromagnetic wire coil;
the heating temperature sensor may include: a panel temperature sensor for acquiring the temperature of the panel of the control cavity and/or a pan temperature sensor for acquiring the temperature of the heated pan.
In an exemplary embodiment of the present application, when the temperature sensor may include: when the IGBT temperature sensor is used, the initial temperature T0 includes: IGBT initial temperature; the operating temperature may further include: upper limit temperature of IGBT; the method may further comprise:
comparing the IGBT initial temperature with the IGBT upper limit temperature;
when the initial temperature of the IGBT is greater than or equal to the upper limit temperature of the IGBT, starting the cooling fan;
when the IGBT initial temperature is less than the IGBT upper limit temperature, the initial temperature T0 detected by all temperature sensors is compared with the first operating temperature T1 and the second operating temperature T2.
In an exemplary embodiment of the present application, the method may further include: when the AD value corresponding to the working temperature is detected to be larger than the preset working temperature threshold value continuously and repeatedly, alarming is carried out
In an exemplary embodiment of the present application, the method may further include: and when the initial temperature T0 is smaller than the first working temperature T1, closing an air outlet on the control cavity.
The embodiment of the application provides an electromagnetic heating device, which can comprise a control cavity for generating an electromagnetic field, a main control unit, a cooling fan, an electromagnetic wire coil, a circuit board and a temperature sensor, wherein the cooling fan, the electromagnetic wire coil, the circuit board and the temperature sensor are arranged in the control cavity; the temperature sensor can comprise a heating temperature sensor and/or a safety temperature sensor, and an operation interface connected with the main control unit is arranged on a panel of the control cavity; the operation interface is provided with a plurality of operation function keys, and at least one operation function key corresponds to the control method of the electromagnetic heating device.
Compared with the related art, the scheme of the embodiment of the application can comprise the following steps: the electromagnetic heating device can comprise a control cavity for generating an electromagnetic field, a main control unit, a cooling fan arranged in the control cavity, an electromagnetic wire coil, a circuit board and a temperature sensor; the temperature sensor includes a heating temperature sensor and/or a safety temperature sensor, and the control method may include: starting the electromagnetic heating device, and acquiring an initial temperature T0 at the starting time by the main control unit through the temperature sensor; comparing the initial temperature T0 with a preset working temperature; the operating temperature includes: a first operating temperature T1 and a second operating temperature T2; the second working temperature T2 is greater than or equal to the first working temperature T1; when the initial temperature T0 is smaller than the first working temperature T1, the main control unit turns off the cooling fan so as to heat through the electromagnetic wire coil and/or a heating element on the circuit board, and the temperature in the control cavity is increased; when the initial temperature T0 is greater than the second working temperature T2, the main control unit starts the cooling fan and judges whether the temperature sensor is damaged according to a temperature signal detected by the temperature sensor. According to the embodiment, under the low-temperature working environment, the temperature rising speed of the temperature sensor is accelerated by closing the fan, the low-temperature false alarm probability of the temperature sensor is reduced, and the user experience is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Other advantages of the present application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide an understanding of the technical aspects of the present application, and are incorporated in and constitute a part of this specification, illustrate the technical aspects of the present application and together with the examples of the present application, and not constitute a limitation of the technical aspects of the present application.
Fig. 1 is a schematic structural view of an electromagnetic heating device in the related art;
FIG. 2 is a flow chart of a control method of an electromagnetic heating device according to an embodiment of the present application;
fig. 3 is a schematic diagram of a control method of an electromagnetic heating device according to an embodiment of the present application.
Detailed Description
The present application describes a number of embodiments, but the description is illustrative and not limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or in place of any other feature or element of any other embodiment unless specifically limited.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements of the present disclosure may also be combined with any conventional features or elements to form a unique inventive arrangement as defined in the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive arrangements to form another unique inventive arrangement as defined in the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be restricted except in light of the attached claims and their equivalents. Further, various modifications and changes may be made within the scope of the appended claims.
Furthermore, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other sequences of steps are possible as will be appreciated by those of ordinary skill in the art. Accordingly, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Furthermore, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
The embodiment of the application provides a control method of an electromagnetic heating device, which can comprise a control cavity for generating an electromagnetic field, a main control unit, a cooling fan, an electromagnetic wire coil, a circuit board and a temperature sensor, wherein the cooling fan, the electromagnetic wire coil, the circuit board and the temperature sensor are arranged in the control cavity; the temperature sensor includes a heating temperature sensor and/or a safety temperature sensor, and as shown in fig. 2, the control method may include steps S101 to S104:
s101, starting the electromagnetic heating device, and acquiring an initial temperature T0 at the starting time by the main control unit through the temperature sensor;
s102, comparing the initial temperature T0 with a preset working temperature; the operating temperature includes: a first operating temperature T1 and a second operating temperature T2; the second working temperature T2 is greater than or equal to the first working temperature T1;
s103, when the initial temperature T0 is smaller than the first working temperature T1, the main control unit turns off the cooling fan so as to heat through the electromagnetic wire coil and/or a heating element on the circuit board, and the temperature in the control cavity is increased;
and S104, when the initial temperature T0 is greater than the second working temperature T2, the main control unit starts the cooling fan and judges whether the temperature sensor is damaged according to a temperature signal detected by the temperature sensor.
In an exemplary embodiment of the present application, the first operating temperature T1 may satisfy: t1 is less than or equal to 10 ℃; the second operating temperature T2 may satisfy: t2 is more than or equal to 5 ℃ and less than or equal to 20 ℃.
In the exemplary embodiment of the present application, the first operating temperature T1 and the second operating temperature T2 may be set differently according to different models and regions where the electromagnetic heating device is located.
In an exemplary embodiment of the present application, the safety temperature sensor may include: an Insulated Gate Bipolar Transistor (IGBT) temperature sensor for acquiring the temperature of the IGBT on the circuit board and/or a wire coil temperature sensor for acquiring the temperature of the electromagnetic wire coil;
the heating temperature sensor may include: a panel temperature sensor for acquiring the temperature of the panel of the control cavity and/or a pan temperature sensor for acquiring the temperature of the heated pan.
In an exemplary embodiment of the present application, the initial temperature T0 of all temperature sensors (e.g., IGBT temperature sensor, panel temperature sensor, wire coil temperature sensor) may be detected before power-on: igbt_init (AD value corresponding to the initial temperature of the IGBT), tmain_init (AD value corresponding to the initial temperature of the panel), xp_init (AD value corresponding to the initial temperature of the wire coil).
In an exemplary embodiment of the present application, the detected initial temperature T0 of the one or more temperature sensors may be compared with a preset operating temperature, and whether to turn off the fan may be determined according to the comparison result.
In an exemplary embodiment of the present application, the operating temperature refers to a lower temperature value at which components (such as IGBTs, filament trays, panels, etc.) and/or cookware, etc. of the electromagnetic heating device can normally operate when the electromagnetic heating device operates in an environment, for example, the first operating temperature T1 may be a temperature limit, and the second operating temperature T2 may be a temperature value at which normal operation is possible.
In an exemplary embodiment of the present application, the operating temperatures corresponding to the various components may be converted from analog data to digital data prior thereto.
In an exemplary embodiment of the present application, each temperature sensor may correspond to a temperature resistance table, where the temperature resistance table is a table of correspondence between temperatures and resistance values;
the method may further comprise: calculating a first resistance corresponding to the working temperature of the component measured by each temperature sensor according to the temperature resistance table; and dividing the voltage by the first resistance and the resistance of a preset voltage dividing resistor to obtain an AD value corresponding to the first resistance.
In the exemplary embodiment of the present application, each temperature sensor may have a temperature resistance table (a table corresponding to a temperature and a resistance value), according to which a first resistance value R1 corresponding to an operating temperature (for example, a first operating temperature T1, which may be 0 degrees celsius or other temperature values) of a component measured by each temperature sensor when the electromagnetic heating device is started may be calculated, and a corresponding AD value may be calculated by using a voltage dividing resistor. For example, igbt_ad (AD value corresponding to the operating temperature igbt_init of the IGBT), tmain_ad (AD value corresponding to the operating temperature tmain_init of the panel), xp_ad (AD value corresponding to the operating temperature xp_init of the wire coil) can be obtained.
In the exemplary embodiment of the present application, an embodiment of determining whether to turn off the fan by determining the ambient temperature where the electromagnetic heating device is located through the initial temperature igbt_init of the IGBT, the initial temperature tmain_init of the panel, and the initial temperature xp_init of the wire coil is given below.
In an exemplary embodiment of the present application, when the temperature sensor includes the IGBT temperature sensor, the initial temperature T0 includes: IGBT initial temperature; the operating temperature may further include: upper limit temperature of IGBT; the method may further comprise:
comparing the IGBT initial temperature with the IGBT upper limit temperature;
when the initial temperature of the IGBT is greater than or equal to the upper limit temperature of the IGBT, starting the cooling fan;
when the IGBT initial temperature is less than the IGBT upper limit temperature, the initial temperature T0 detected by all temperature sensors is compared with the first operating temperature T1 and the second operating temperature T2.
In the exemplary embodiment of the present application, when the IGBT temperature sensor is included, the heat dissipation requirement of the IGBT is preferably considered, and the initial temperatures (such as tmain_init and xp_init) of other components (such as a panel and a wire tray) are further determined on the premise that the IGBT initial temperature value igbt_init is ensured to be normal.
In an exemplary embodiment of the present application, as shown in fig. 3, after the electromagnetic heating device is started, an initial temperature igbt_init of the IGBT, an initial temperature tmain_init of the panel, and an initial temperature xp_init of the wire coil may be first obtained, and an AD value of the corresponding operating temperature may be obtained: an AD value IGBT_AD corresponding to the operating temperature of the IGBT, an AD value Tmain_AD corresponding to the operating temperature of the panel and an AD value XP_AD corresponding to the operating temperature of the wire coil.
In an exemplary embodiment of the present application, the IGBT initial temperature (igbt_init) may first be compared with an IGBT upper limit temperature (igbt_high); judging whether the IGBT initial temperature is greater than or equal to the IGBT upper limit temperature (namely IGBT_Init > IGBT_high; when the initial temperature of the IGBT is smaller than the upper limit temperature of the IGBT, comparing the initial temperature Tmain_Init of the panel with an AD value Tmain_AD corresponding to the working temperature of the panel, judging whether the initial temperature Tmain_Init is smaller than the Tmain_AD, and when the initial temperature Tmain_Init is smaller than the upper limit temperature of the IGBT, judging whether the initial temperature Tmain_Init is smaller than the AD is smaller than the operating temperature of the panel: the fan is turned off when the IGBT_Init is less than the IGBT_AD and the XP_Init is less than the XP_AD, or when the IGBT_Init is less than the IGBT_AD, or the XP_Init is less than the XP_AD. When tmain_init < tmain_ad is not satisfied, it can be judged whether or not both: the IGBT_Init is less than the IGBT_AD and the XP_Init is less than the XP_AD, and when the IGBT_Init is less than the IGBT_AD and the XP_Init is less than the XP_AD, the fan is turned off.
In an exemplary embodiment of the present application, the method may further include: and when the AD value corresponding to the working temperature is detected to be larger than the preset working temperature threshold value continuously for multiple times, alarming.
In the exemplary embodiment of the application, since the resistance values of the panel temperature sensor and the wire coil temperature sensor become large in a low-temperature state, the voltage dividing resistance value in the voltage dividing circuit is limited, false triggering alarm can be possibly caused in a limited detection time, and the machine cannot work normally. Therefore, in the embodiment of the application, when the fan is turned off to perform rapid temperature rise, a software filtering method is added, and when the temperature is continuously determined to be greater than the preset working temperature threshold value err_ad (the working temperature threshold value tmain_err corresponding to the panel, the working temperature threshold value igbt_err corresponding to the IGBT and the working temperature threshold value xp_err corresponding to the wire tray) for N times, an alarm is triggered.
In an exemplary embodiment of the present application, after the fan is turned off, whether the acquired AD value tmain_ad corresponding to the working temperature of the panel is greater than the working temperature threshold tmain_err corresponding to the panel may be detected in real time, when tmain_ad > tmain_err, a preset panel count bit may be added by 1 (tmain_err_cnt++), and when the number of times tmain_ad > tmain_err reaches the preset number of times threshold in a certain period of time, that is, when the count value of the panel count bit reaches the number of times threshold, an alarm is given. When Tmean_AD is less than or equal to Tmean_Err, the panel count bit can be added with 0, whether the AD value XP_AD corresponding to the obtained working temperature of the wire tray is larger than the working temperature threshold XP_Err corresponding to the wire tray is detected, when XP_AD is more than XP_Err, the preset wire tray count bit can be added with 1 (XP_Err_Cnt++), and when the number of times of XP_AD more than XP_Err in a certain time period reaches the preset number of times threshold, namely, the count value of the wire tray count bit reaches the number of times threshold, the alarm is given.
In an exemplary embodiment of the present application, the method may further include: after heating the control cavity for a preset time period t, judging whether the temperature sensor is damaged or not according to the temperature signal detected by the temperature sensor.
In an exemplary embodiment of the present application, the preset time period t may satisfy: t is more than or equal to 10s and less than or equal to 3min.
In an exemplary embodiment of the present application, it may be detected whether the temperature value detected by the temperature sensor is within a preset normal temperature range, it may be determined that the temperature sensor is not damaged when the temperature value detected by the temperature sensor is within the preset normal temperature range, and it may be determined that the temperature sensor is likely to be damaged when the temperature value detected by the temperature sensor is not within the preset normal temperature range, even far beyond the high normal temperature range.
In an exemplary embodiment of the present application, the method may further include: and when the initial temperature T0 is smaller than the first working temperature T1, closing an air outlet on the control cavity.
In the exemplary embodiment of the application, the air outlet can be made into a closeable mode, and when the external temperature is low, the air outlet is closed, the fan stops rotating, and the temperature rise inside the machine is accelerated.
In the exemplary embodiment of the application, under the low-temperature working environment, the temperature rising speed of the temperature sensor is accelerated by closing the fan, so that the low-temperature false alarm probability of the temperature sensor is reduced, and the user experience is improved.
In the exemplary embodiment of the application, the temperature sensors of the panel, the wire coil and the IGBT are combined to detect the ambient temperature, whether the machine works in a low-temperature working environment is judged, and when the machine is started to work, the fan is closed by combining the temperature of the IGBT, so that the temperature rising speed of the interior of the machine is accelerated, meanwhile, the panel and the wire coil sensor alarm program are filtered, the probability of false alarm is reduced, and the user experience is improved.
The embodiment of the application provides an electromagnetic heating device, which can comprise a control cavity for generating an electromagnetic field, a main control unit, a cooling fan, an electromagnetic wire coil, a circuit board and a temperature sensor, wherein the cooling fan, the electromagnetic wire coil, the circuit board and the temperature sensor are arranged in the control cavity; the temperature sensor can comprise a heating temperature sensor and/or a safety temperature sensor, and an operation interface connected with the main control unit is arranged on a panel of the control cavity; the operation interface is provided with a plurality of operation function keys, and at least one operation function key corresponds to the control method of the electromagnetic heating device.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, functional modules/units in the apparatus, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
Claims (10)
1. The control method of the electromagnetic heating device comprises a control cavity for generating an electromagnetic field, a main control unit, a cooling fan, an electromagnetic wire coil, a circuit board and a temperature sensor, wherein the cooling fan, the electromagnetic wire coil, the circuit board and the temperature sensor are arranged in the control cavity; the temperature sensor comprises a heating temperature sensor and/or a safety temperature sensor, and is characterized in that the control method comprises the following steps:
starting the electromagnetic heating device, and acquiring the initial temperature T0 of a control cavity during starting by the main control unit through the temperature sensor;
comparing the initial temperature T0 with a preset working temperature; the operating temperature includes: a first operating temperature T1 and a second operating temperature T2; the second working temperature T2 is greater than or equal to the first working temperature T1; the first operating temperature T1 satisfies: t1 is less than or equal to 10 ℃;
when the initial temperature T0 is smaller than the first working temperature T1, the main control unit turns off the cooling fan so as to heat through the electromagnetic wire coil and/or a heating element on the circuit board, and the temperature in the control cavity is increased;
when the initial temperature T0 is greater than the second working temperature T2, the main control unit starts the cooling fan and judges whether the temperature sensor is damaged according to a temperature signal detected by the temperature sensor.
2. The control method of an electromagnetic heating apparatus according to claim 1, characterized in that the method further comprises: after heating the control cavity for a preset time period t, judging whether the temperature sensor is damaged or not according to the temperature signal detected by the temperature sensor.
3. The control method of an electromagnetic heating device according to claim 2, wherein the preset time period t satisfies: t is more than or equal to 10s and less than or equal to 3min.
4. The control method of an electromagnetic heating device according to claim 1, wherein the second operating temperature T2 satisfies: t2 is more than or equal to 5 ℃ and less than or equal to 20 ℃.
5. The control method of an electromagnetic heating apparatus according to claim 1, wherein each temperature sensor corresponds to a temperature resistance table, and the temperature resistance table is a table of correspondence between temperatures and resistance values;
the method further comprises the steps of: calculating a first resistance corresponding to the working temperature of the component measured by each temperature sensor according to the temperature resistance table; and dividing the voltage by the first resistance and the resistance of a preset voltage dividing resistor to obtain an AD value corresponding to the first resistance.
6. The method for controlling an electromagnetic heating apparatus according to claim 1, wherein,
the safety temperature sensor includes: an Insulated Gate Bipolar Transistor (IGBT) temperature sensor for acquiring the temperature of the IGBT on the circuit board and/or a wire coil temperature sensor for acquiring the temperature of the electromagnetic wire coil;
the heating temperature sensor includes: a panel temperature sensor for acquiring the temperature of the panel of the control cavity and/or a pan temperature sensor for acquiring the temperature of the heated pan.
7. The control method of an electromagnetic heating apparatus according to claim 6, wherein when the temperature sensor includes: when the IGBT temperature sensor is used, the initial temperature T0 includes: IGBT initial temperature; the operating temperature further includes: upper limit temperature of IGBT; the method further comprises the steps of:
comparing the IGBT initial temperature with the IGBT upper limit temperature;
when the initial temperature of the IGBT is greater than or equal to the upper limit temperature of the IGBT, starting the cooling fan;
when the IGBT initial temperature is less than the IGBT upper limit temperature, the initial temperature T0 detected by all temperature sensors is compared with the first operating temperature T1 and the second operating temperature T2.
8. The control method of an electromagnetic heating apparatus according to any one of claims 1 to 7, characterized in that the method further comprises: and when the AD value corresponding to the working temperature is detected to be larger than the preset working temperature threshold value continuously for multiple times, alarming.
9. The control method of an electromagnetic heating apparatus according to any one of claims 1 to 7, characterized in that the method further comprises: and when the initial temperature T0 is smaller than the first working temperature T1, closing an air outlet on the control cavity.
10. An electromagnetic heating device comprises a control cavity for generating an electromagnetic field, a main control unit, a cooling fan, an electromagnetic wire coil, a circuit board and a temperature sensor, wherein the cooling fan, the electromagnetic wire coil, the circuit board and the temperature sensor are arranged in the control cavity; the temperature sensor comprises a heating temperature sensor and/or a safety temperature sensor, and an operation interface connected with the main control unit is arranged on a panel of the control cavity; the operation interface is provided with a plurality of operation function keys, wherein at least one operation function key corresponds to the control method of the electromagnetic heating device according to any one of claims 1 to 9.
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| CN202010986510.6A CN114198783B (en) | 2020-09-18 | 2020-09-18 | Electromagnetic heating device and control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101583255A (en) * | 2009-07-03 | 2009-11-18 | 山东英特力光通信开发有限公司 | Electronic equipment chassis |
| CN102235700A (en) * | 2010-04-23 | 2011-11-09 | 台湾樱花股份有限公司 | Heating device, residual heat display method of heating device and residual heat display control circuit |
| CN103175237A (en) * | 2013-03-27 | 2013-06-26 | 福州高奇智芯电源科技有限公司 | Microwave oven and self-adaptive power output control method thereof |
| CN105042648A (en) * | 2015-09-02 | 2015-11-11 | 江门市赛赑厨房设备有限公司 | Intelligent heat dissipation induction cooker and application method thereof |
| CN110972342A (en) * | 2019-11-13 | 2020-04-07 | 九阳股份有限公司 | Sensor high-temperature alarm threshold compensation method and electromagnetic heating equipment |
-
2020
- 2020-09-18 CN CN202010986510.6A patent/CN114198783B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101583255A (en) * | 2009-07-03 | 2009-11-18 | 山东英特力光通信开发有限公司 | Electronic equipment chassis |
| CN102235700A (en) * | 2010-04-23 | 2011-11-09 | 台湾樱花股份有限公司 | Heating device, residual heat display method of heating device and residual heat display control circuit |
| CN103175237A (en) * | 2013-03-27 | 2013-06-26 | 福州高奇智芯电源科技有限公司 | Microwave oven and self-adaptive power output control method thereof |
| CN105042648A (en) * | 2015-09-02 | 2015-11-11 | 江门市赛赑厨房设备有限公司 | Intelligent heat dissipation induction cooker and application method thereof |
| CN110972342A (en) * | 2019-11-13 | 2020-04-07 | 九阳股份有限公司 | Sensor high-temperature alarm threshold compensation method and electromagnetic heating equipment |
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| CN114198783A (en) | 2022-03-18 |
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