CN109699097B - Electromagnetic heating cooking utensil and IGBT overheating abnormity processing method and device thereof - Google Patents
Electromagnetic heating cooking utensil and IGBT overheating abnormity processing method and device thereof Download PDFInfo
- Publication number
- CN109699097B CN109699097B CN201711003675.1A CN201711003675A CN109699097B CN 109699097 B CN109699097 B CN 109699097B CN 201711003675 A CN201711003675 A CN 201711003675A CN 109699097 B CN109699097 B CN 109699097B
- Authority
- CN
- China
- Prior art keywords
- igbt
- temperature
- electromagnetic heating
- heating cooking
- cooking appliance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The invention discloses an electromagnetic heating cooking utensil and an IGBT overheating abnormity processing method and device thereof, wherein the IGBT overheating abnormity processing method comprises the following steps: when the electromagnetic heating cooking utensil is used for heating, the temperature of the IGBT is obtained in real time; judging the temperature of the IGBT to generate a judgment result; and when the judgment result shows that the IGBT is overheated abnormally, controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step. According to the method for processing the overheating abnormity of the IGBT, the buffer processing can be performed when the IGBT is about to overheat, whether the temperature of the IGBT can support continuous operation or not can be fully judged, instead of singly controlling the electromagnetic heating cooking utensil to stop heating, the overheating abnormity of the IGBT is caused to have the possibility of self-recovery.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an overheating abnormity processing method of an IGBT (insulated gate bipolar transistor) in an electromagnetic heating cooking appliance, a non-transitory computer readable storage medium, an overheating abnormity processing device of the IGBT in the electromagnetic heating cooking appliance and the electromagnetic heating cooking appliance with the overheating abnormity processing device of the IGBT.
Background
Currently, an Insulated Gate Bipolar Transistor (IGBT) is used as a core component of an IH heating system, and needs to be monitored and protected during operation.
In the related art, it is a conventional practice to set a certain fixed temperature value, and when the IGBT temperature is higher than the certain fixed temperature value, the heating operation is stopped. However, the method is too single, and the possibility of abnormal self-recovery of the IGBT due to overheating is not given.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above.
Therefore, a first object of the present invention is to provide a method for handling an abnormal overheating of an IGBT in an electromagnetic heating cooking device, which can perform a buffering process when the IGBT is about to overheat, and can sufficiently determine whether the temperature of the IGBT can support a continuous operation, instead of simply controlling the electromagnetic heating cooking device to stop heating, so that the abnormal overheating of the IGBT is likely to be self-recovered.
A second object of the invention is to propose a non-transitory computer-readable storage medium.
A third object of the present invention is to provide an overheat abnormality processing apparatus for an IGBT in an electromagnetic heating cooking device.
A fourth object of the present invention is to provide an electromagnetic heating cooking appliance.
In order to achieve the above object, a first embodiment of the present invention provides an overheat abnormality processing method for an IGBT in an electromagnetic heating cooking appliance, including the steps of: when the electromagnetic heating cooking appliance is used for heating, the temperature of the IGBT is obtained in real time; judging the temperature of the IGBT to generate a judgment result; and when the judgment result shows that the IGBT is overheated abnormally, controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step.
According to the method for processing the overheating abnormity of the IGBT in the electromagnetic heating cooking appliance, when the electromagnetic heating cooking appliance is heated, the temperature of the IGBT is obtained in real time, the temperature of the IGBT is judged to generate a judgment result, and then the heating power of the electromagnetic heating cooking appliance is controlled to be reduced step by step when the overheating abnormity of the IGBT is known according to the judgment result, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step. Therefore, when the IGBT is about to overheat, the buffer processing can be carried out, whether the temperature of the IGBT can support the continuous operation can be fully judged, and the electromagnetic heating cooking utensil is not controlled to stop heating singly, so that the IGBT is overheated and is likely to be recovered.
In addition, the method for handling the overheat abnormality of the IGBT in the electromagnetic heating cooking device according to the above embodiment of the present invention may further have the following additional technical features:
in one embodiment of the invention, when the temperature of the IGBT is greater than a first reference temperature, the heating power of the electromagnetic heating cooking appliance is controlled to be reduced by one gear, whether the temperature of the IGBT is greater than a second reference temperature or not is judged, and if the temperature of the IGBT is greater than the second reference temperature, the heating power of the electromagnetic heating cooking appliance is controlled to be reduced by one gear continuously, wherein the second reference temperature is greater than the first reference temperature; and if the temperature of the IGBT is less than or equal to a second reference temperature, controlling the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
In one embodiment of the invention, after controlling the heating power of the electromagnetic heating cooking appliance to continuously reduce for one gear, whether the temperature of the IGBT is greater than a third reference temperature is judged, and if the temperature of the IGBT is greater than the third reference temperature, the electromagnetic heating cooking appliance is controlled to stop heating, wherein the third reference temperature is greater than the second reference temperature; and if the temperature of the IGBT is less than or equal to a third reference temperature, controlling the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
In one embodiment of the invention, in the process of controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step, the air speed of a fan in the electromagnetic heating cooking appliance is also controlled to be increased step by step.
To achieve the above object, a non-transitory computer-readable storage medium is provided in an embodiment of a second aspect of the present invention, and a computer program is stored on the non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the method for handling the overheat abnormality of the IGBT in the electromagnetic heating cooking appliance according to the embodiment of the first aspect of the present invention.
According to the non-transitory computer readable storage medium of the embodiment of the invention, the buffering process can be performed when the IGBT is about to overheat, whether the temperature of the IGBT can support continuous operation or not can be fully judged, and the phenomenon that the electromagnetic heating cooking utensil is singly controlled to stop heating is avoided, so that the IGBT is overheated and is likely to be self-recovered.
In order to achieve the above object, a third aspect of the present invention provides an overheat abnormality processing apparatus for an IGBT in an electromagnetic heating cooking appliance, including: the temperature acquisition module is used for acquiring the temperature of the IGBT in real time when the electromagnetic heating cooking appliance is used for heating; the judging module is used for judging the temperature of the IGBT to generate a judging result; and the overheating abnormity processing module is used for controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step when the IGBT is known to be overheated abnormally according to the judgment result, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step.
According to the overheat abnormity processing device of the IGBT in the electromagnetic heating cooking appliance, when the electromagnetic heating cooking appliance is heated, the temperature of the IGBT is obtained in real time through the temperature obtaining module, the temperature of the IGBT is judged through the judging module to generate the judging result, so that the overheat abnormity processing module controls the heating power of the electromagnetic heating cooking appliance to be reduced step by step when the overheat abnormity processing module knows that the IGBT is overheated abnormally according to the judging result, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step. Therefore, when the IGBT is about to overheat, the buffer processing can be carried out, whether the temperature of the IGBT can support the continuous operation can be fully judged, and the electromagnetic heating cooking utensil is not controlled to stop heating singly, so that the IGBT is overheated and is likely to be recovered.
In addition, the overheat abnormality processing device for the IGBT in the electromagnetic heating cooking device according to the embodiment of the present invention may further have the following additional technical features:
in one embodiment of the invention, when the temperature of the IGBT is greater than a first reference temperature, the overheat abnormality processing module controls the heating power of the electromagnetic heating cooking appliance to be reduced by one gear, and judges whether the temperature of the IGBT is greater than a second reference temperature by the judgment module, and if the temperature of the IGBT is greater than the second reference temperature, the overheat abnormality processing module controls the heating power of the electromagnetic heating cooking appliance to be reduced by one gear continuously, wherein the second reference temperature is greater than the first reference temperature; and if the temperature of the IGBT is less than or equal to a second reference temperature, the overheating abnormity processing module controls the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
In one embodiment of the invention, after controlling the heating power of the electromagnetic heating cooking appliance to continuously reduce by one gear, the judging module judges whether the temperature of the IGBT is greater than a third reference temperature, and if the temperature of the IGBT is greater than the third reference temperature, the overheating abnormality processing module controls the electromagnetic heating cooking appliance to stop heating, wherein the third reference temperature is greater than the second reference temperature; and if the temperature of the IGBT is less than or equal to a third reference temperature, the overheating abnormity processing module controls the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
In one embodiment of the invention, in the process of controlling the gradual reduction of the heating power of the electromagnetic heating cooking appliance, the overheating abnormity processing module also controls the gradual increase of the wind speed of a fan in the electromagnetic heating cooking appliance.
In order to achieve the above object, an electromagnetic heating cooking device according to a fourth aspect of the present invention includes: an overheat abnormality processing device for an IGBT in an electromagnetic heating cooking appliance according to an embodiment of the third aspect of the present invention.
According to the electromagnetic heating cooking utensil provided by the embodiment of the invention, through the overheat abnormity processing device of the IGBT in the electromagnetic heating cooking utensil, the buffer processing can be performed when the IGBT is about to overheat, whether the temperature of the IGBT can support continuous operation can be fully judged, and the phenomenon that the electromagnetic heating cooking utensil stops heating by single control is avoided, so that the IGBT overheat abnormity is always possible to be recovered.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flowchart of an overheat abnormality processing method of an IGBT in an electromagnetic heating cooking appliance according to an embodiment of the present invention;
fig. 2 is a flowchart of an overheat abnormality processing method of an IGBT in an electromagnetic heating cooking appliance according to one specific example of the invention; and
fig. 3 is a block schematic diagram of an overheat abnormality processing apparatus of an IGBT in the electromagnetic heating cooking appliance according to the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An overheat abnormality processing method of an IGBT in an electromagnetic heating cooking appliance, a non-transitory computer-readable storage medium, an overheat abnormality processing device of an IGBT in an electromagnetic heating cooking appliance, and an electromagnetic heating cooking appliance having the overheat abnormality processing device of the IGBT according to embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of an overheat abnormality processing method of an IGBT in an electromagnetic heating cooking appliance according to an embodiment of the present invention.
In an embodiment of the present invention, the electromagnetic heating cooking appliance may be a split type electromagnetic heating cooking appliance, wherein the split type electromagnetic heating cooking appliance may be a split type electric cooker or a split type electric pressure cooker. In addition, in other embodiments of the present invention, the electromagnetic heating cooking appliance may further include an induction cooker or a frying and baking machine.
As shown in fig. 1, the method for handling an overheat abnormality of an IGBT in an electromagnetic heating cooking appliance according to an embodiment of the present invention includes the steps of:
and S1, acquiring the temperature of the IGBT in real time when the electromagnetic heating cooking utensil is used for heating.
In an embodiment of the present invention, the temperature of the IGBT may be acquired in real time by a temperature sensor, and if the electromagnetic heating cooking appliance is a split type electromagnetic heating cooking appliance, the electromagnetic heating cooking appliance may include an appliance body and a base, and the temperature sensor may be installed in the base to acquire the temperature of the IGBT in real time.
And S2, judging the temperature of the IGBT to generate a judgment result.
Specifically, when the electromagnetic heating cooking appliance heats, the electromagnetic heating cooking appliance may control a built-in temperature sensor to acquire the temperature of the IGBT in real time, and determine the temperature of the IGBT to generate a determination result.
After the electromagnetic heating cooking appliance starts heating, the temperature of the IGBT of the electromagnetic heating cooking appliance may tend to continuously increase.
And S3, when the judgment result shows that the IGBT is overheated abnormally, controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step.
Specifically, when the temperature of the IGBT is greater than a first reference temperature, the heating power of the electromagnetic heating cooking appliance may be controlled to be reduced by one step, and whether the temperature of the IGBT is greater than a second reference temperature is determined, and if the temperature of the IGBT is greater than the second reference temperature, the heating power of the electromagnetic heating cooking appliance may be controlled to be reduced by one step, where the second reference temperature is greater than the first reference temperature, and both the second reference temperature and the first reference temperature may be calibrated according to actual conditions, for example, the first reference temperature may be 85 ℃ and the second reference temperature may be 88 ℃, where the first reference temperature may be 85 ℃ and the second reference temperature may be 88 ℃, and may be obtained through a large number of experiments by a manufacturer of the electromagnetic heating cooking appliance, and the electromagnetic heating cooking appliance is stored in a storage space of the electromagnetic heating cooking appliance before the electromagnetic heating cooking appliance leaves a factory. And if the temperature of the IGBT is less than or equal to the second reference temperature, controlling the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
It should be noted that, when the temperature of the IGBT described in this embodiment is greater than the first reference temperature, it can be determined that an overheat abnormality has occurred in the IGBT. In addition, if the temperature of the IGBT is less than or equal to the first reference temperature, the electromagnetic heating cooking appliance may be controlled to heat at a heating power gear when the electromagnetic heating cooking appliance starts to operate, where the heating power gear when the electromagnetic heating cooking appliance starts to operate may be set by a user through a human-computer interface of the electromagnetic heating cooking appliance, or may be a default heating power gear of a current cooking mode of the electromagnetic heating cooking appliance (for example, when the user does not set the heating power gear after selecting the cooking mode).
Further, after controlling the heating power of the electromagnetic heating cooking appliance to continuously reduce by one gear, it may be further determined whether the temperature of the IGBT is greater than a third reference temperature, and if the temperature of the IGBT is greater than the third reference temperature, the electromagnetic heating cooking appliance is controlled to stop heating to ensure that the IGBT is not damaged by high temperature, where the third reference temperature is greater than the second reference temperature, and the third reference temperature may be calibrated according to a real-time condition, for example, the third reference temperature may be 91 ℃, where the third reference temperature may be 91 ℃ and may be obtained through a large number of experiments by a manufacturer of the electromagnetic heating cooking appliance, and the electromagnetic heating cooking appliance is stored in a storage space of the electromagnetic heating cooking appliance before the electromagnetic heating cooking appliance leaves a factory. And if the temperature of the IGBT is less than or equal to the third reference temperature, controlling the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
For example, taking an electromagnetic heating cooking appliance as an electromagnetic oven as an example, when the electromagnetic oven heats, the electromagnetic oven can control a built-in temperature sensor to obtain the temperature of the IGBT in real time. When the temperature of the IGBT reaches 85 ℃, the induction cooker can control the heating power of the induction cooker to reduce by one gear and then continue to work, if the temperature of the IGBT continues to rise to 88 ℃, the induction cooker can control the heating power of the induction cooker to continue to reduce by one gear and then continue to work, and if the temperature of the IGBT continues to rise to 91 ℃, the induction cooker can control the induction cooker to stop working so as to ensure that the IGBT is not damaged by high temperature, and can send out reminding information to remind a user of timely processing.
In addition, after the induction cooker controls the heating power of the induction cooker to shift down, if the temperature of the IGBT is reduced to below 85 ℃ (including 85 ℃), the induction cooker can control the induction cooker to restore the original heating power gear (namely, the heating power gear when the induction cooker starts to work) to continue working.
In order to make the present invention more clear to those skilled in the art, fig. 2 is a flowchart of an overheat abnormality processing method of an IGBT in an electromagnetic heating cooking appliance according to one specific example of the present invention. As shown in fig. 2, the method for treating an overheat abnormality of an IGBT in an electromagnetic heating cooking appliance may include the steps of:
and S101, controlling the electromagnetic heating cooking appliance to perform heating operation.
And S102, acquiring the temperature of the IGBT in real time.
S103, judging whether the temperature of the IGBT is more than 85 ℃. If yes, go to step S104; if not, step S109 is performed.
And S104, controlling the heating power of the electromagnetic heating cooking appliance to be reduced by one gear.
S105, judging whether the temperature of the IGBT is larger than 88 ℃. If yes, go to step S106; if not, step S110 is executed.
And S106, controlling the heating power of the electromagnetic heating cooking appliance to continuously reduce the first gear.
S107, judging whether the temperature of the IGBT is more than 91 ℃. If yes, go to step S108; if not, step S110 is executed.
And S108, controlling the electromagnetic heating cooking appliance to stop working and sending out reminding information.
And S109, controlling the electromagnetic heating cooking utensil to heat at a heating power gear when the electromagnetic heating cooking utensil starts to work.
And S110, controlling the electromagnetic heating cooking appliance to heat according to the adjusted heating power gear.
In summary, according to the method for handling abnormal overheating of an IGBT in an electromagnetic heating cooking appliance provided in the embodiment of the present invention, when the IGBT is about to overheat, a buffering process can be performed, and it can be fully determined whether the temperature of the IGBT can support continuous operation, instead of controlling the electromagnetic heating cooking appliance to stop heating alone, so that the abnormal overheating of the IGBT is likely to be self-recovered.
In addition, in order to decrease the temperature of the IGBT as soon as possible when it is known from the determination result that the IGBT is overheated abnormally, in one embodiment of the present invention, the wind speed of the fan in the electromagnetic heating cooking appliance may be controlled to increase step by step while the heating power of the electromagnetic heating cooking appliance is controlled to decrease step by step.
Specifically, when the temperature of the IGBT is greater than a first reference temperature (e.g., 85 ℃), the wind speed of the fan in the electromagnetic heating cooking appliance may be controlled to increase by one stage, and it is determined whether the temperature of the IGBT is greater than a second reference temperature (e.g., 88 ℃), and if the temperature of the IGBT is greater than the second reference temperature, the wind speed of the fan in the electromagnetic heating cooking appliance may be controlled to continue increasing by one stage. And if the temperature of the IGBT is less than or equal to the second reference temperature, controlling a fan in the electromagnetic heating cooking appliance to keep the current gear to continue working.
In addition, after controlling the air speed of the fan in the electromagnetic heating cooking appliance to continuously increase by one gear, whether the temperature of the IGBT is greater than a third reference temperature (for example, 91 ℃) may be further determined, and if the temperature of the IGBT is greater than the third reference temperature, the air speed of the fan in the electromagnetic heating cooking appliance may be controlled to continuously increase by one gear so as to rapidly decrease the temperature of the IGBT after the electromagnetic heating cooking appliance stops the heating operation, and when the temperature of the IGBT falls below a preset temperature (for example, the first reference temperature), the fan in the electromagnetic heating cooking appliance may be controlled to stop the operation. And if the temperature of the IGBT is less than or equal to the third reference temperature, controlling a fan in the electromagnetic heating cooking appliance to keep the current gear to continue working.
It should be noted that, when the temperature of the IGBT is less than or equal to the first reference temperature, the fan in the electromagnetic heating cooking appliance may be controlled to operate at the wind speed at which the fan starts to operate.
In summary, according to the method for handling abnormal overheating of an IGBT in an electromagnetic heating cooking appliance in an embodiment of the present invention, when the electromagnetic heating cooking appliance is heated, the temperature of the IGBT is obtained in real time, and the temperature of the IGBT is determined to generate a determination result, and then when it is known that the IGBT is abnormal due to overheating according to the determination result, the heating power of the electromagnetic heating cooking appliance is controlled to be decreased step by step, wherein in the process of controlling the heating power of the electromagnetic heating cooking appliance to be decreased step by step, the reference temperature for determining the temperature of the IGBT is increased step by step. Therefore, when the IGBT is about to overheat, the buffer processing can be carried out, whether the temperature of the IGBT can support the continuous operation can be fully judged, and the electromagnetic heating cooking utensil is not controlled to stop heating singly, so that the IGBT is overheated and is likely to be recovered.
In addition, an embodiment of the present invention also proposes a non-transitory computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the method for handling the overheat abnormality of the IGBT in the electromagnetic heating cooking appliance proposed by the above-mentioned embodiment of the present invention.
According to the non-transitory computer readable storage medium of the embodiment of the invention, the buffering process can be performed when the IGBT is about to overheat, whether the temperature of the IGBT can support continuous operation or not can be fully judged, and the phenomenon that the electromagnetic heating cooking utensil is singly controlled to stop heating is avoided, so that the IGBT is overheated and is likely to be self-recovered.
Fig. 3 is a block schematic diagram of an overheat abnormality processing apparatus of an IGBT in the electromagnetic heating cooking appliance according to the embodiment of the present invention.
In an embodiment of the present invention, the electromagnetic heating cooking appliance may be a split type electromagnetic heating cooking appliance, wherein the split type electromagnetic heating cooking appliance may be a split type electric cooker or a split type electric pressure cooker. In addition, in other embodiments of the present invention, the electromagnetic heating cooking appliance may further include an induction cooker or a frying and baking machine.
As shown in fig. 3, an overheat abnormality processing apparatus for an IGBT in an electromagnetic heating cooking appliance according to an embodiment of the present invention includes: the system comprises a temperature acquisition module 100, a judgment module 200 and an overheating abnormity processing module 300.
The temperature obtaining module 100 is configured to obtain the temperature of the IGBT in real time when the electromagnetic heating cooking appliance is heated.
The judging module 200 is used for judging the temperature of the IGBT to generate a judgment result.
The overheating abnormity processing module 300 is used for controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step when the fact that the IGBT is overheated abnormally is known according to the judgment result, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step.
In an embodiment of the invention, when the temperature of the IGBT is greater than a first reference temperature, the overheat abnormality processing module 300 controls the heating power of the electromagnetic heating cooking appliance to be reduced by one gear, and determines whether the temperature of the IGBT is greater than a second reference temperature through the determination module 200, if the temperature of the IGBT is greater than the second reference temperature, the overheat abnormality processing module 300 controls the heating power of the electromagnetic heating cooking appliance to be reduced by one gear continuously, wherein the second reference temperature is greater than the first reference temperature, and if the temperature of the IGBT is less than or equal to the second reference temperature, the overheat abnormality processing module 300 controls the electromagnetic heating cooking appliance to keep the current power gear to be heated continuously.
In an embodiment of the invention, after controlling the heating power of the electromagnetic heating cooking appliance to continuously decrease by one gear, the determining module 200 determines whether the temperature of the IGBT is greater than a third reference temperature, and if the temperature of the IGBT is greater than the third reference temperature, the overheat abnormality processing module 300 controls the electromagnetic heating cooking appliance to stop heating, wherein the third reference temperature is greater than the second reference temperature, and if the temperature of the IGBT is less than or equal to the third reference temperature, the overheat abnormality processing module 300 controls the electromagnetic heating cooking appliance to keep the current power gear to continuously heat.
In one embodiment of the present invention, in the process of controlling the heating power of the electromagnetic heating cooking appliance to be gradually reduced, the overheat abnormality processing module 300 further controls the air speed of the fan in the electromagnetic heating cooking appliance to be gradually increased.
It should be noted that details not disclosed in the overheat abnormality processing apparatus for the IGBT in the electromagnetic heating cooking appliance according to the embodiment of the present invention refer to details disclosed in the overheat abnormality processing method for the IGBT in the electromagnetic heating cooking appliance according to the embodiment of the present invention, and details are not repeated herein.
In summary, according to the overheat abnormality processing device for the IGBT in the electromagnetic heating cooking appliance in the embodiment of the present invention, when the electromagnetic heating cooking appliance is heating, the temperature of the IGBT is obtained in real time by the temperature obtaining module, and the temperature of the IGBT is determined by the determining module to generate the determining result, so that when the overheat abnormality processing module determines that the IGBT has overheat abnormality according to the determining result, the heating power of the electromagnetic heating cooking appliance is controlled to be reduced step by step, wherein the reference temperature for determining the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking appliance to be reduced step by step. Therefore, when the IGBT is about to overheat, the buffer processing can be carried out, whether the temperature of the IGBT can support the continuous operation can be fully judged, and the electromagnetic heating cooking utensil is not controlled to stop heating singly, so that the IGBT is overheated and is likely to be recovered.
In order to implement the above embodiment, the present invention further provides an electromagnetic heating cooking appliance including the overheat abnormality processing apparatus for an IGBT in the electromagnetic heating cooking appliance.
According to the electromagnetic heating cooking utensil provided by the embodiment of the invention, through the overheat abnormity processing device of the IGBT in the electromagnetic heating cooking utensil, the buffer processing can be performed when the IGBT is about to overheat, whether the temperature of the IGBT can support continuous operation can be fully judged, and the phenomenon that the electromagnetic heating cooking utensil stops heating by single control is avoided, so that the IGBT overheat abnormity is always possible to be recovered.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An overheating abnormity processing method of an IGBT in an electromagnetic heating cooking appliance is characterized by comprising the following steps:
when the electromagnetic heating cooking appliance is used for heating, the temperature of the IGBT is obtained in real time;
judging the temperature of the IGBT to generate a judgment result;
and when the judgment result shows that the IGBT is overheated abnormally, controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step.
2. The overheat abnormality processing method for an IGBT in an electromagnetic heating cooking appliance according to claim 1, wherein when the temperature of the IGBT is greater than a first reference temperature, the heating power of the electromagnetic heating cooking appliance is controlled to be reduced by one stage, and it is judged whether or not the temperature of the IGBT is greater than a second reference temperature,
if the temperature of the IGBT is greater than a second reference temperature, controlling the heating power of the electromagnetic heating cooking appliance to continuously reduce for one gear, wherein the second reference temperature is greater than the first reference temperature;
and if the temperature of the IGBT is less than or equal to a second reference temperature, controlling the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
3. The method for handling an overheat abnormality of an IGBT in an electromagnetic heating cooking device according to claim 2, wherein after controlling the heating power of the electromagnetic heating cooking device to continue to be reduced by one stage, it is judged whether or not the temperature of the IGBT is greater than a third reference temperature,
controlling the electromagnetic heating cooking appliance to stop heating if the temperature of the IGBT is greater than a third reference temperature, wherein the third reference temperature is greater than the second reference temperature;
and if the temperature of the IGBT is less than or equal to a third reference temperature, controlling the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
4. The method for handling the overheat abnormality of the IGBT in the electromagnetic heating cooking appliance according to claim 2, wherein in controlling the heating power of the electromagnetic heating cooking appliance to be decreased stepwise, the wind speed of a fan in the electromagnetic heating cooking appliance is also controlled to be increased stepwise.
5. A non-transitory computer-readable storage medium on which a computer program is stored, wherein the program, when executed by a processor, implements the method for the overheat abnormality treatment of the IGBT in the electromagnetic heating cooking appliance according to any one of claims 1 to 4.
6. An overheat abnormality processing apparatus of an IGBT in an electromagnetic heating cooking appliance, characterized by comprising:
the temperature acquisition module is used for acquiring the temperature of the IGBT in real time when the electromagnetic heating cooking appliance is used for heating;
the judging module is used for judging the temperature of the IGBT to generate a judging result;
and the overheating abnormity processing module is used for controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step when the IGBT is known to be overheated abnormally according to the judgment result, wherein the reference temperature for judging the temperature of the IGBT is increased step by step in the process of controlling the heating power of the electromagnetic heating cooking utensil to be reduced step by step.
7. The apparatus of claim 6, wherein the overheat abnormality processing module controls the heating power of the electromagnetic heating cooking device to be reduced by one step when the temperature of the IGBT is higher than a first reference temperature, and determines whether the temperature of the IGBT is higher than a second reference temperature by the determination module,
if the temperature of the IGBT is greater than a second reference temperature, the overheating abnormity processing module controls the heating power of the electromagnetic heating cooking appliance to continuously reduce for the first gear, wherein the second reference temperature is greater than the first reference temperature;
and if the temperature of the IGBT is less than or equal to a second reference temperature, the overheating abnormity processing module controls the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
8. The apparatus for handling overheat abnormality of IGBT in electromagnetic heating cooking device according to claim 7, wherein said judging module judges whether or not the temperature of IGBT is larger than a third reference temperature after controlling the heating power of said electromagnetic heating cooking device to continue to decrease by one stage,
the overheating abnormity processing module controls the electromagnetic heating cooking appliance to stop heating if the temperature of the IGBT is greater than a third reference temperature, wherein the third reference temperature is greater than the second reference temperature;
and if the temperature of the IGBT is less than or equal to a third reference temperature, the overheating abnormity processing module controls the electromagnetic heating cooking appliance to keep the current power gear to continue heating.
9. The apparatus for handling overheat abnormality of the IGBT according to any one of claims 6 to 8, wherein the overheat abnormality handling module further controls a fan in the electromagnetic heating cooking appliance to increase a wind speed stepwise in controlling the stepwise decrease of the heating power of the electromagnetic heating cooking appliance.
10. An electromagnetic heating cooking appliance, characterized by comprising the overheat abnormality treatment apparatus for an IGBT in the electromagnetic heating cooking appliance according to any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003675.1A CN109699097B (en) | 2017-10-24 | 2017-10-24 | Electromagnetic heating cooking utensil and IGBT overheating abnormity processing method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003675.1A CN109699097B (en) | 2017-10-24 | 2017-10-24 | Electromagnetic heating cooking utensil and IGBT overheating abnormity processing method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109699097A CN109699097A (en) | 2019-04-30 |
| CN109699097B true CN109699097B (en) | 2021-07-20 |
Family
ID=66228001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711003675.1A Active CN109699097B (en) | 2017-10-24 | 2017-10-24 | Electromagnetic heating cooking utensil and IGBT overheating abnormity processing method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109699097B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4845332A (en) * | 1987-09-16 | 1989-07-04 | National Steel Corp. | Galvanneal induction furnace temperature control system |
| CN2159972Y (en) * | 1993-05-20 | 1994-03-30 | 黄建军 | Power saving electric iron |
| CN204031117U (en) * | 2014-07-29 | 2014-12-17 | 四川广义微电子股份有限公司 | The power transistor of self-adjusting temperature |
| CN104880676A (en) * | 2015-05-29 | 2015-09-02 | 金龙联合汽车工业（苏州）有限公司 | Power battery pack thermal runaway safety alarm method based on battery management system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002231427A (en) * | 2001-02-06 | 2002-08-16 | Canon Inc | Heating system and image forming device |
| CN104918342B (en) * | 2014-03-14 | 2018-06-08 | 美的集团股份有限公司 | Electromagnetic heater and its control assembly and control method |
| CN105795881B (en) * | 2014-12-31 | 2019-04-02 | 佛山市顺德区美的电热电器制造有限公司 | The control method and device of dry combustion method are prevented in cooking equipment |
| CN106714349A (en) * | 2015-07-21 | 2017-05-24 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating system and control method of electromagnetic heating system |
| CN106211395B (en) * | 2016-07-15 | 2019-04-30 | 珠海格力电器股份有限公司 | heating control method of electromagnetic heating device |
| CN106979821B (en) * | 2017-03-23 | 2019-04-30 | 广东美的厨房电器制造有限公司 | The overheating detection method and apparatus of cooking apparatus |
| CN107124780B (en) * | 2017-06-20 | 2021-04-30 | 浙江绍兴苏泊尔生活电器有限公司 | Electromagnetic heating temperature control method and device and electromagnetic heating equipment |
| CN107277953B (en) * | 2017-07-13 | 2020-09-01 | 浙江绍兴苏泊尔生活电器有限公司 | Constant temperature control method for induction cooker and induction cooker |
-
2017
- 2017-10-24 CN CN201711003675.1A patent/CN109699097B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4845332A (en) * | 1987-09-16 | 1989-07-04 | National Steel Corp. | Galvanneal induction furnace temperature control system |
| CN2159972Y (en) * | 1993-05-20 | 1994-03-30 | 黄建军 | Power saving electric iron |
| CN204031117U (en) * | 2014-07-29 | 2014-12-17 | 四川广义微电子股份有限公司 | The power transistor of self-adjusting temperature |
| CN104880676A (en) * | 2015-05-29 | 2015-09-02 | 金龙联合汽车工业（苏州）有限公司 | Power battery pack thermal runaway safety alarm method based on battery management system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109699097A (en) | 2019-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108402888B (en) | Electric pressure cooker and cooking control method thereof | |
| CN109976434B (en) | Method for regulating the heating output of at least one heating element of a household appliance | |
| CN110313807B (en) | Control device and method for pressure cooking appliance and pressure cooking appliance | |
| CN105078267A (en) | Heating control method for rice cooker | |
| CN110680179B (en) | Cooking control method, system, computer readable storage medium and cooking device | |
| CN110604465B (en) | Pressure cooking appliance and cooking control device and method thereof | |
| CN109557956B (en) | Electric cooker and slow stewing control method and control device thereof | |
| CN106788358B (en) | IGBT overheating protection method and device and electrical equipment | |
| CN106610038B (en) | Cooking control method and device of induction cooker and induction cooker | |
| CN109695902B (en) | Cooking appliance and dry burning prevention control method and device thereof | |
| CN107581888B (en) | Cooking temperature control method and device of electric cooker and electric cooker | |
| CN106264111B (en) | Heating control method of electric cooker and electric cooker | |
| CN111380088B (en) | Induction cooker and method and device for identifying cooking pot on induction cooker | |
| CN109699097B (en) | Electromagnetic heating cooking utensil and IGBT overheating abnormity processing method and device thereof | |
| CN108338670B (en) | Pressure cooking appliance and control device and method thereof | |
| CN110613313B (en) | Electromagnetic heating cooking utensil and over-current control method and control device of IGBT (insulated gate bipolar transistor) of electromagnetic heating cooking utensil | |
| CN109549447B (en) | Electric cooker and slow stewing control method and control device thereof | |
| CN109938616B (en) | Electromagnetic cooking utensil and output power calculation method thereof | |
| CN109548208B (en) | Electric cooker and control method and control device thereof | |
| CN111728498B (en) | Steaming equipment control method and device | |
| CN111265103A (en) | Method and device for controlling temperature and cooking appliance | |
| CN106264160B (en) | The recognition methods of the culinary art type of electric cooking pot and electric cooking pot | |
| CN110856607B (en) | Pressure cooking appliance and control method and control device thereof | |
| CN110856612B (en) | Control method and device of cooking equipment, cooking equipment and storage medium | |
| JP5040133B2 (en) | Induction heating cooker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |