CN109699097A - The overheat abnormality eliminating method and device of electromagnetic heating cooking utensil and its IGBT - Google Patents
The overheat abnormality eliminating method and device of electromagnetic heating cooking utensil and its IGBT Download PDFInfo
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- CN109699097A CN109699097A CN201711003675.1A CN201711003675A CN109699097A CN 109699097 A CN109699097 A CN 109699097A CN 201711003675 A CN201711003675 A CN 201711003675A CN 109699097 A CN109699097 A CN 109699097A
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- igbt
- temperature
- electromagnetic heating
- cooking utensil
- heating cooking
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
Abstract
The invention discloses a kind of electromagnetic heating cooking utensil and its overheat abnormality eliminating method and device of IGBT, the overheat abnormality eliminating method of the IGBT obtains the temperature of IGBT the following steps are included: when electromagnetic heating cooking utensil is heated in real time；The temperature of IGBT is judged to generate judging result；When knowing that heat anomaly occurred for IGBT according to judging result, the heating power of control electromagnetic heating utensil reduces step by step, wherein during the heating power for controlling electromagnetic heating utensil reduces step by step, the fiducial temperature judged the temperature of IGBT improves step by step.The overheat abnormality eliminating method of the IGBT of the embodiment of the present invention, buffered can be made when IGBT will be overheated, it can sufficiently judge whether the temperature of IGBT can be supported to work on, rather than single control electromagnetic heating cooking utensil stops heating, so that IGBT is crossed heat anomaly self-healing possibility.
Description
Technical field
The present invention relates to field of home appliance technology, in particular to the overheat of IGBT is different in a kind of electromagnetic heating cooking utensil
Normal processing method, a kind of non-transitorycomputer readable storage medium, the overheat of IGBT is different in a kind of electromagnetic heating cooking utensil
Normal processing unit and a kind of electromagnetic heating cooking utensil of the overheat exception handling device with the IGBT.
Background technique
Currently, IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) is used as IH
The core component of heating system need to have monitoring and protection to it at work.
In the related technology, conventional way is to set some temperature value fixed, when IGBT temperature is higher than this temperature,
Stop heating work.However this way is excessively single, is not given to IGBT and crosses the self-healing possibility of heat anomaly.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.
For this purpose, the first purpose of this invention is to propose the overheat exception of IGBT in electromagnetic heating cooking utensil a kind of
Reason method can make buffered when IGBT will be overheated, and can sufficiently judge whether the temperature of IGBT can be supported to continue
Work, rather than single control electromagnetic heating cooking utensil stops heating, so that IGBT is crossed heat anomaly self-healing possibility.
Second object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
Third object of the present invention is to propose the overheat abnormality processing dress of IGBT in electromagnetic heating cooking utensil a kind of
It sets.
Fourth object of the present invention is to propose a kind of electromagnetic heating cooking utensil.
In order to achieve the above objectives, first aspect present invention embodiment proposes IGBT in a kind of electromagnetic heating cooking utensil
Overheat abnormality eliminating method, comprising the following steps: when the electromagnetic heating cooking utensil is heated, in real time described in acquisition
The temperature of IGBT；The temperature of the IGBT is judged to generate judging result；Known according to the judging result described
When heat anomaly occurred for IGBT, the heating power for controlling the electromagnetic heating utensil reduces step by step, wherein is controlling the electromagnetism
During the heating power of heating utensil reduces step by step, the fiducial temperature judged the temperature of the IGBT mentions step by step
It is high.
The overheat abnormality eliminating method of IGBT, works as electromagnetic heating in electromagnetic heating cooking utensil according to an embodiment of the present invention
When cooking apparatus is heated, the temperature of IGBT is obtained in real time, and the temperature of IGBT is judged to generate judging result, so
When knowing that heat anomaly occurred for IGBT according to judging result afterwards, the heating power of control electromagnetic heating utensil reduces step by step, wherein
During the heating power for controlling electromagnetic heating utensil reduces step by step, fiducial temperature that the temperature of IGBT is judged by
Grade improves.Buffered can be made when IGBT will be overheated as a result, can sufficiently judge whether the temperature of IGBT can be supported
Work on, rather than single control electromagnetic heating cooking utensil stops heating, make IGBT cross heat anomaly have it is self-healing can
Energy.
In addition, in the electromagnetic heating cooking utensil proposed according to that above embodiment of the present invention IGBT overheat abnormality processing side
Method can also have the following additional technical features:
In one embodiment of the invention, when the temperature of the IGBT is greater than the first fiducial temperature, the electricity is controlled
The heating power of magnetic heating appliance for cooking reduces by one grade, and judges whether the temperature of the IGBT is greater than the second fiducial temperature, such as
The temperature of IGBT described in fruit is greater than the second fiducial temperature, then the heating power for controlling the electromagnetic heating cooking utensil continues to reduce
One grade, wherein second fiducial temperature is greater than first fiducial temperature；If the temperature of the IGBT is less than or equal to second
Fiducial temperature then controls the electromagnetic heating cooking utensil and current power gear is kept to continue to heat.
In one embodiment of the invention, when the heating power for controlling the electromagnetic heating cooking utensil continues reduction by one
After shelves, judge whether the temperature of the IGBT is greater than third fiducial temperature, if the temperature of the IGBT is greater than third benchmark temperature
Degree then controls the electromagnetic heating cooking utensil and stops heating, wherein the third fiducial temperature is greater than the second benchmark temperature
Degree；If the temperature of the IGBT is less than or equal to third fiducial temperature, controls the electromagnetic heating cooking utensil and keep current
Power gear continues to heat.
In one embodiment of the invention, the process reduced step by step in the heating power for controlling the electromagnetic heating utensil
In, the wind speed for also controlling the blower in the electromagnetic heating cooking utensil improves step by step.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of non-transitory computer-readable storage medium
Matter is stored thereon with computer program, and first aspect present invention embodiment is realized when the computer program is executed by processor
The overheat abnormality eliminating method of IGBT in the electromagnetic heating cooking utensil of proposition.
Non-transitorycomputer readable storage medium according to an embodiment of the present invention can be made when IGBT will be overheated
Buffered, can sufficiently judge whether the temperature of IGBT can be supported to work on, rather than single control electromagnetic heating is cooked
Utensil of preparing food stops heating, and so that IGBT is crossed heat anomaly self-healing possibility.
In order to achieve the above objectives, third aspect present invention embodiment proposes IGBT in a kind of electromagnetic heating cooking utensil
Overheat exception handling device, comprising: temperature acquisition module, for when the electromagnetic heating cooking utensil is heated, in real time
Obtain the temperature of the IGBT；Judgment module is judged for the temperature to the IGBT to generate judging result；It overheats different
Normal processing module when for knowing that heat anomaly occurred for the IGBT according to the judging result, controls the electromagnetic heater
The heating power of tool reduces step by step, wherein right during the heating power for controlling the electromagnetic heating utensil reduces step by step
The fiducial temperature that the temperature of the IGBT is judged improves step by step.
The overheat exception handling device of IGBT in electromagnetic heating cooking utensil according to an embodiment of the present invention, in electromagnetic heating
When cooking apparatus is heated, the temperature of IGBT is obtained in real time by temperature acquisition module, and by judgment module to IGBT's
Temperature is judged to generate judging result, so that overheat exception processing module knows that IGBT generation overheat is different according to judging result
The heating power of Chang Shi, control electromagnetic heating utensil reduce step by step, wherein are controlling the heating power of electromagnetic heating utensil step by step
During reduction, the fiducial temperature judged the temperature of IGBT improves step by step.It as a result, can when IGBT will be overheated
Buffered is made, can sufficiently judge whether the temperature of IGBT can be supported to work on, rather than single control electromagnetism adds
Heat cooking utensil stops heating, and so that IGBT is crossed heat anomaly self-healing possibility.
In addition, the overheat abnormality processing of IGBT fills in the electromagnetic heating cooking utensil proposed according to that above embodiment of the present invention
Setting can also have the following additional technical features:
In one embodiment of the invention, when the temperature of the IGBT is greater than the first fiducial temperature, the overheat is different
The heating power that normal processing module controls the electromagnetic heating cooking utensil reduces by one grade, and judges institute by the judgment module
Whether the temperature for stating IGBT is greater than the second fiducial temperature, if the temperature of the IGBT is greater than the second fiducial temperature, the overheat
The heating power that exception processing module then controls the electromagnetic heating cooking utensil continues to reduce by one grade, wherein second base
Quasi- temperature is greater than first fiducial temperature；If the temperature of the IGBT is less than or equal to the second fiducial temperature, the overheat is different
Normal processing module then controls the electromagnetic heating cooking utensil and current power gear is kept to continue to heat.
In one embodiment of the invention, when the heating power for controlling the electromagnetic heating cooking utensil continues reduction by one
After shelves, the judgment module judges whether the temperature of the IGBT is greater than third fiducial temperature, if the temperature of the IGBT is big
In third fiducial temperature, the overheat exception processing module then controls the electromagnetic heating cooking utensil and stops heating, wherein institute
Third fiducial temperature is stated greater than second fiducial temperature；If the temperature of the IGBT is less than or equal to third fiducial temperature, institute
It states overheat exception processing module and then controls the electromagnetic heating cooking utensil and current power gear is kept to continue to heat.
In one embodiment of the invention, the process reduced step by step in the heating power for controlling the electromagnetic heating utensil
In, the wind speed that the overheat exception processing module also controls the blower in the electromagnetic heating cooking utensil improves step by step.
To achieve the goals above, a kind of electromagnetic heating cooking utensil of fourth aspect present invention embodiment proposition includes:
The overheat exception handling device of IGBT in the electromagnetic heating cooking utensil of third aspect present invention embodiment.
The electromagnetic heating cooking utensil of the embodiment of the present invention, the overheat by IGBT in above-mentioned electromagnetic heating cooking utensil are different
Normal processing unit can make buffered when IGBT will be overheated, and can sufficiently judge whether the temperature of IGBT can be supported
Work on, rather than single control electromagnetic heating cooking utensil stops heating, make IGBT cross heat anomaly have it is self-healing can
Energy.
The advantages of additional aspect of the invention, will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the process of the overheat abnormality eliminating method of IGBT in electromagnetic heating cooking utensil according to an embodiment of the present invention
Figure；
Fig. 2 is the overheat abnormality eliminating method of IGBT in the electromagnetic heating cooking utensil of a specific example according to the present invention
Flow chart；And
Fig. 3 is the box of the overheat exception handling device of IGBT in electromagnetic heating cooking utensil according to an embodiment of the present invention
Schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawing in the electromagnetic heating cooking utensil to describe the embodiment of the present invention IGBT overheat abnormality processing
Method, non-transitorycomputer readable storage medium, in electromagnetic heating cooking utensil IGBT overheat exception handling device and tool
There is the electromagnetic heating cooking utensil of the overheat exception handling device of the IGBT.
Fig. 1 is the process of the overheat abnormality eliminating method of IGBT in electromagnetic heating cooking utensil according to an embodiment of the present invention
Figure.
In an embodiment of the present invention, electromagnetic heating cooking utensil can be Split electromagnetic heating appliance for cooking, wherein should
Split electromagnetic heating appliance for cooking can be Split type electric rice cooker or split-type electric pressure cooker.In addition, in other realities of the invention
It applies in example, electromagnetic heating cooking utensil may also include electromagnetic oven or baking machine.
As shown in Figure 1, in the electromagnetic heating cooking utensil of the embodiment of the present invention IGBT overheat abnormality eliminating method, including
Following steps:
S1 obtains the temperature of IGBT when electromagnetic heating cooking utensil is heated in real time.
In an embodiment of the present invention, the temperature that IGBT can be obtained in real time by temperature sensor, if the electromagnetic heating
Cooking apparatus is Split electromagnetic heating appliance for cooking, then the electromagnetic heating cooking utensil may include apparatus body and pedestal, and
The temperature sensor is mountable in the base, to obtain the temperature of IGBT in real time.
S2 judges to generate judging result the temperature of IGBT.
Specifically, when electromagnetic heating cooking utensil is heated, electromagnetic heating cooking utensil can control built-in temperature
Sensor obtains the temperature of IGBT in real time, and is judged the temperature of IGBT to generate judging result.
It should be noted that after electromagnetic heating cooking utensil starts to be heated, the electromagnetic heating cooking utensil
Continuous upward trend may be presented in the temperature of IGBT.
S3 when knowing that heat anomaly occurred for IGBT according to judging result, controls the heating power of electromagnetic heating utensil step by step
It reduces, wherein during the heating power for controlling electromagnetic heating utensil reduces step by step, the temperature of IGBT is judged
Fiducial temperature improves step by step.
Specifically, when the temperature of IGBT is greater than the first fiducial temperature, it can control the heating function of electromagnetic heating cooking utensil
Rate reduces by one grade, and judges whether the temperature of IGBT is greater than the second fiducial temperature, if the temperature of IGBT is greater than the second benchmark temperature
Degree then can control the heating power of electromagnetic heating cooking utensil to continue to reduce by one grade, wherein the second fiducial temperature is greater than the first base
Quasi- temperature, and the second fiducial temperature and the first fiducial temperature can be demarcated according to the actual situation, for example, the first fiducial temperature
It can be 85 DEG C, the second fiducial temperature can be 88 DEG C, wherein the first fiducial temperature can be able to be 88 for 85 DEG C and the second fiducial temperature
DEG C, the manufacturer that can be electromagnetic heating cooking utensil passes through what a large amount of experiment obtained, and dispatches from the factory in electromagnetic heating cooking utensil
Before, it stores it in the memory space of electromagnetic heating cooking utensil.If the temperature of IGBT is less than or equal to the second benchmark temperature
Degree then can control electromagnetic heating cooking utensil that current power gear is kept to continue to heat.
It should be noted that can determine whether described in the embodiment when the temperature of IGBT is greater than the first fiducial temperature
Heat anomaly had occurred in IGBT.In addition, can control electromagnetic heating if the temperature of IGBT is less than or equal to the first fiducial temperature
Heating power gear when cooking apparatus is with its start-up operation is heated, wherein when electromagnetic heating cooking utensil is started to work
Heating power gear can be what user was set by the human-computer interaction interface of the electromagnetic heating cooking utensil, be also possible to electricity
The heating power gear of the current culinary art mode default of magnetic heating appliance for cooking is not (for example, user sets after selecting culinary art mode
When heating power gear).
Further, after the heating power for controlling electromagnetic heating cooking utensil, which continues, reduces by one grade, it also can determine whether IGBT
Temperature whether be greater than third fiducial temperature, if the temperature of IGBT be greater than third fiducial temperature, control electromagnetic heating culinary art
Utensil stops heating to guarantee that IGBT is not damaged by high temperature, wherein third fiducial temperature is greater than the second fiducial temperature, and third base
Quasi- temperature can be demarcated according to real-time condition, for example, third fiducial temperature can be 91 DEG C, wherein third fiducial temperature can be
What 91 DEG C of manufacturers that can be electromagnetic heating cooking utensil obtained by a large amount of experiment, and dispatch from the factory in electromagnetic heating cooking utensil
Before, it stores it in the memory space of electromagnetic heating cooking utensil.If the temperature of IGBT is less than or equal to third benchmark temperature
Degree then controls electromagnetic heating cooking utensil and current power gear is kept to continue to heat.
For example, by taking electromagnetic heating cooking utensil is electromagnetic oven as an example, when electromagnetic oven is heated, electromagnetic oven is controllable
The built-in temperature sensor of system obtains the temperature of IGBT in real time.When the temperature of IGBT reaches 85 DEG C, the electromagnetic oven is controllable certainly
The heating power of body works on after reducing by one grade, if the temperature of IGBT, which continues to rise, reaches 88 DEG C, electromagnetic oven if is controllable
The heating power for making itself continues to work on after reducing by one grade, if the temperature of IGBT, which continues to rise, reaches 91 DEG C, the electromagnetism
Furnace, which then can control, itself to stop working to guarantee that IGBT is not damaged by high temperature, and capable of emitting prompting message is to remind user to locate in time
Reason.
In addition, after the heating power downshift that the electromagnetic oven controls itself, if the temperature of IGBT is down to 85 DEG C or less (packets
Include 85 DEG C) when, which then can control the original heating power gear of self-recovery (that is, when the electromagnetic oven is started to work
Heating power gear) it works on.
To make those skilled in the art more clearly understand the present invention, Fig. 2 is the electricity of a specific example according to the present invention
The flow chart of the overheat abnormality eliminating method of IGBT in magnetic heating appliance for cooking.As shown in Fig. 2, in the electromagnetic heating cooking utensil
The overheat abnormality eliminating method of IGBT can comprise the following steps that
S101, control electromagnetic heating cooking utensil carry out heating work.
S102 obtains the temperature of IGBT in real time.
S103, judges whether the temperature of IGBT is greater than 85 DEG C.If so, executing step S104；If not, executing step
S109。
S104, the heating power for controlling electromagnetic heating cooking utensil reduce by one grade.
S105, judges whether the temperature of IGBT is greater than 88 DEG C.If so, executing step S106；If not, executing step
S110。
S106, the heating power for controlling electromagnetic heating cooking utensil continue to reduce by one grade.
S107, judges whether the temperature of IGBT is greater than 91 DEG C.If so, executing step S108；If not, executing step
S110。
S108, control electromagnetic heating cooking utensil stops working, and issues prompting message.
S109 controls heating power gear of the electromagnetic heating cooking utensil with its start-up operation when and is heated.
S110, control electromagnetic heating cooking utensil are heated according to heating power gear adjusted.
In conclusion in electromagnetic heating cooking utensil provided in an embodiment of the present invention IGBT overheat abnormality eliminating method,
Buffered can be made when IGBT will be overheated, and can sufficiently judge whether the temperature of IGBT can be supported to work on, and
It is not that single control electromagnetic heating cooking utensil stops heating, so that IGBT is crossed heat anomaly self-healing possibility.
In addition, so that the temperature of IGBT is lowered as early as possible in order to when knowing that heat anomaly occurred for IGBT according to judging result,
In one embodiment of the invention, also controllable during the heating power for controlling electromagnetic heating utensil reduces step by step
The wind speed of blower in electromagnetic heating cooking utensil improves step by step.
Specifically, when the temperature of IGBT is greater than the first fiducial temperature (for example, 85 DEG C), it can control electromagnetic heating cooking pot
The wind speed of blower in tool increases one grade, and judges whether the temperature of IGBT is greater than the second fiducial temperature (for example, 88 DEG C), if
The temperature of IGBT is greater than the second fiducial temperature, then can control the wind speed of the blower in electromagnetic heating cooking utensil to continue raising one
Shelves.If the temperature of IGBT is less than or equal to the second fiducial temperature, the blower holding in controllable electromagnetic heating cooking utensil is worked as
Preceding gear works on.
In addition, also can determine whether IGBT after the wind speed for controlling the blower in electromagnetic heating cooking utensil continues to increase one grade
Temperature whether be greater than third fiducial temperature (for example, 91 DEG C), if the temperature of IGBT be greater than third fiducial temperature, can control
The wind speed of blower in electromagnetic heating cooking utensil continues to increase one grade, in order to stop heater in electromagnetic heating cooking utensil
So that the temperature of IGBT is lowered rapidly after work, and can IGBT the near preset temperature of temperature (for example, fiducial temperature) below
When, the blower controlled in electromagnetic heating cooking utensil stops working.If the temperature of IGBT is less than or equal to third fiducial temperature,
Blower in controllable electromagnetic heating cooking utensil keeps current gear to work on.
It should be noted that then electromagnetic heating can control to cook when the temperature of IGBT is less than or equal to the first fiducial temperature
The wind speed when blower prepared food in utensil is with its start-up operation works.
To sum up, in electromagnetic heating cooking utensil according to an embodiment of the present invention IGBT overheat abnormality eliminating method, work as electricity
When magnetic heating appliance for cooking is heated, the temperature of IGBT is obtained in real time, and the temperature of IGBT is judged to generate judgement
As a result, the heating power of control electromagnetic heating utensil drops step by step when then knowing that heat anomaly occurred for IGBT according to judging result
It is low, wherein during the heating power for controlling electromagnetic heating utensil reduces step by step, base that the temperature of IGBT is judged
Quasi- temperature improves step by step.Buffered can be made when IGBT will be overheated as a result, can sufficiently judge that the temperature of IGBT is
It is no to support to work on, rather than single control electromagnetic heating cooking utensil stops heating, so that IGBT is crossed heat anomaly has certainly
The possibility of recovery.
In addition, the embodiment of the present invention also proposed a kind of non-transitorycomputer readable storage medium, it is stored thereon with
Computer program realizes the electromagnetic heating cooking utensil that the above embodiment of the present invention proposes when computer program is executed by processor
The overheat abnormality eliminating method of middle IGBT.
Non-transitorycomputer readable storage medium according to an embodiment of the present invention can be made when IGBT will be overheated
Buffered, can sufficiently judge whether the temperature of IGBT can be supported to work on, rather than single control electromagnetic heating is cooked
Utensil of preparing food stops heating, and so that IGBT is crossed heat anomaly self-healing possibility.
Fig. 3 is the box of the overheat exception handling device of IGBT in electromagnetic heating cooking utensil according to an embodiment of the present invention
Schematic diagram.
In an embodiment of the present invention, electromagnetic heating cooking utensil can be Split electromagnetic heating appliance for cooking, wherein should
Split electromagnetic heating appliance for cooking can be Split type electric rice cooker or split-type electric pressure cooker.In addition, in other realities of the invention
It applies in example, electromagnetic heating cooking utensil may also include electromagnetic oven or baking machine.
As shown in figure 3, the overheat exception handling device of IGBT includes: in the electromagnetic heating cooking utensil of the embodiment of the present invention
Temperature acquisition module 100, judgment module 200 and overheat exception processing module 300.
Wherein, temperature acquisition module 100 is used for when electromagnetic heating cooking utensil is heated, and obtains the temperature of IGBT in real time
Degree.
Judgment module 200 is for judging to generate judging result the temperature of IGBT.
Overheat exception processing module 300 is for when knowing that heat anomaly occurred for IGBT according to judging result, control electromagnetism to add
The heating power of hot utensil reduces step by step, wherein right during the heating power for controlling electromagnetic heating utensil reduces step by step
The fiducial temperature that the temperature of IGBT is judged improves step by step.
In one embodiment of the invention, when the temperature of IGBT is greater than the first fiducial temperature, abnormality processing mould is overheated
The heating power that block 300 controls electromagnetic heating cooking utensil reduces by one grade, and judges that the temperature of IGBT is by judgment module 200
It is no to be greater than the second fiducial temperature, if the temperature of IGBT is greater than the second fiducial temperature, electricity is controlled if overheating exception processing module 300
The heating power of magnetic heating appliance for cooking continues to reduce by one grade, wherein and the second fiducial temperature is greater than the first fiducial temperature, if
The temperature of IGBT is less than or equal to the second fiducial temperature, and overheat exception processing module 300 then controls electromagnetic heating cooking utensil holding
Current power gear continues to heat.
In one embodiment of the invention, when the heating power of control electromagnetic heating cooking utensil continues to reduce by one grade
Afterwards, judgment module 200 judges whether the temperature of IGBT is greater than third fiducial temperature, if the temperature of IGBT is greater than third benchmark temperature
Degree, overheat exception processing module 300 then control electromagnetic heating cooking utensil and stop heating, wherein third fiducial temperature is greater than the
Two fiducial temperatures control electromagnetism if overheating exception processing module 300 and add if the temperature of IGBT is less than or equal to third fiducial temperature
Heat cooking utensil keeps current power gear to continue to heat.
In one embodiment of the invention, during the heating power for controlling electromagnetic heating utensil reduces step by step,
The wind speed that overheat exception processing module 300 also controls the blower in electromagnetic heating cooking utensil improves step by step.
It should be noted that in the electromagnetic heating cooking utensil of the embodiment of the present invention in the overheat exception handling device of IGBT
Undisclosed details please refers to institute in the overheat abnormality eliminating method of IGBT in the electromagnetic heating cooking utensil of the embodiment of the present invention
The details of disclosure, specific which is not described herein again.
To sum up, in electromagnetic heating cooking utensil according to an embodiment of the present invention IGBT overheat exception handling device, in electricity
When magnetic heating appliance for cooking is heated, the temperature of IGBT is obtained in real time by temperature acquisition module, and pass through judgment module pair
The temperature of IGBT is judged to generate judging result, so that overheat exception processing module knows IGBT according to judging result
When crossing heat anomaly, the heating power of control electromagnetic heating utensil reduces step by step, wherein in the heating function of control electromagnetic heating utensil
During rate reduces step by step, the fiducial temperature judged the temperature of IGBT improves step by step.It will be overheated in IGBT as a result,
When can make buffered, can sufficiently judge whether the temperature of IGBT can support the control to work on, rather than single
Electromagnetic heating cooking utensil stops heating, and so that IGBT is crossed heat anomaly self-healing possibility.
In order to realize above-described embodiment, the present invention also proposes a kind of electromagnetic heating cooking utensil comprising above-mentioned electromagnetism adds
The overheat exception handling device of IGBT in heat cooking utensil.
The electromagnetic heating cooking utensil of the embodiment of the present invention, the overheat by IGBT in above-mentioned electromagnetic heating cooking utensil are different
Normal processing unit can make buffered when IGBT will be overheated, and can sufficiently judge whether the temperature of IGBT can be supported
Work on, rather than single control electromagnetic heating cooking utensil stops heating, make IGBT cross heat anomaly have it is self-healing can
Energy.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. the overheat abnormality eliminating method of IGBT in a kind of electromagnetic heating cooking utensil, which comprises the following steps:
When the electromagnetic heating cooking utensil is heated, the temperature of the IGBT is obtained in real time；
The temperature of the IGBT is judged to generate judging result；
When knowing that heat anomaly occurred for the IGBT according to the judging result, the heating power of the electromagnetic heating utensil is controlled
It reduces step by step, wherein during the heating power for controlling the electromagnetic heating utensil reduces step by step, to the temperature of the IGBT
The fiducial temperature judged is spent to improve step by step.
2. the overheat abnormality eliminating method of IGBT in electromagnetic heating cooking utensil as described in claim 1, which is characterized in that when
When the temperature of the IGBT is greater than the first fiducial temperature, the heating power for controlling the electromagnetic heating cooking utensil reduces by one grade,
And judge whether the temperature of the IGBT is greater than the second fiducial temperature,
If the temperature of the IGBT is greater than the second fiducial temperature, control the heating power of the electromagnetic heating cooking utensil after
It is continuous to reduce by one grade, wherein second fiducial temperature is greater than first fiducial temperature；
If the temperature of the IGBT is less than or equal to the second fiducial temperature, controls the electromagnetic heating cooking utensil and keep current
Power gear continues to heat.
3. the overheat abnormality eliminating method of IGBT in electromagnetic heating cooking utensil as claimed in claim 2, which is characterized in that when
The heating power for controlling the electromagnetic heating cooking utensil continues after reducing by one grade, judges whether the temperature of the IGBT is greater than the
Three fiducial temperatures,
If the temperature of the IGBT is greater than third fiducial temperature, controls the electromagnetic heating cooking utensil and stops heating,
In, the third fiducial temperature is greater than second fiducial temperature；
If the temperature of the IGBT is less than or equal to third fiducial temperature, controls the electromagnetic heating cooking utensil and keep current
Power gear continues to heat.
4. the overheat abnormality eliminating method of IGBT in electromagnetic heating cooking utensil as claimed in claim 2, which is characterized in that
Control the electromagnetic heating utensil heating power reduce step by step during, also control in the electromagnetic heating cooking utensil
The wind speed of blower improves step by step.
5. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, which is characterized in that the program quilt
The overheat exception such as IGBT in electromagnetic heating cooking utensil of any of claims 1-4 is realized when processor executes
Reason method.
6. the overheat exception handling device of IGBT in a kind of electromagnetic heating cooking utensil characterized by comprising
Temperature acquisition module, for obtaining the temperature of the IGBT in real time when the electromagnetic heating cooking utensil is heated；
Judgment module is judged for the temperature to the IGBT to generate judging result；
Exception processing module is overheated, when for knowing that heat anomaly occurred for the IGBT according to the judging result, described in control
The heating power of electromagnetic heating utensil reduces step by step, wherein reduces step by step in the heating power for controlling the electromagnetic heating utensil
During, the fiducial temperature judged the temperature of the IGBT improves step by step.
7. the overheat exception handling device of IGBT in electromagnetic heating cooking utensil as claimed in claim 6, which is characterized in that when
When the temperature of the IGBT is greater than the first fiducial temperature, the overheat exception processing module controls the electromagnetic heating cooking utensil
Heating power reduce by one grade, and judge whether the temperature of the IGBT is greater than the second fiducial temperature by the judgment module,
If the temperature of the IGBT is greater than the second fiducial temperature, overheat exception processing module if, controls the electromagnetic heating
The heating power of cooking apparatus continues to reduce by one grade, wherein second fiducial temperature is greater than first fiducial temperature；
If the temperature of the IGBT is less than or equal to the second fiducial temperature, overheat exception processing module if, controls the electromagnetism
Heating appliance for cooking keeps current power gear to continue to heat.
8. the overheat exception handling device of IGBT in electromagnetic heating cooking utensil as claimed in claim 7, which is characterized in that when
The heating power for controlling the electromagnetic heating cooking utensil continues after reducing by one grade, and the judgment module judges the temperature of the IGBT
Whether degree is greater than third fiducial temperature,
If the temperature of the IGBT is greater than third fiducial temperature, overheat exception processing module if, controls the electromagnetic heating
Cooking apparatus stops heating, wherein the third fiducial temperature is greater than second fiducial temperature；
If the temperature of the IGBT is less than or equal to third fiducial temperature, overheat exception processing module if, controls the electromagnetism
Heating appliance for cooking keeps current power gear to continue to heat.
9. the overheat exception handling device of IGBT in the electromagnetic heating cooking utensil as described in any one of claim 6-8,
It is characterized in that, during the heating power for controlling the electromagnetic heating utensil reduces step by step, the overheat abnormality processing mould
The wind speed that block also controls the blower in the electromagnetic heating cooking utensil improves step by step.
10. a kind of electromagnetic heating cooking utensil, which is characterized in that add including the electromagnetism as described in any one of claim 6-9
The overheat exception handling device of IGBT in heat cooking utensil.
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