CN110119099B - Heating control method of electromagnetic cooking appliance and electromagnetic cooking appliance - Google Patents
Heating control method of electromagnetic cooking appliance and electromagnetic cooking appliance Download PDFInfo
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- CN110119099B CN110119099B CN201810126923.XA CN201810126923A CN110119099B CN 110119099 B CN110119099 B CN 110119099B CN 201810126923 A CN201810126923 A CN 201810126923A CN 110119099 B CN110119099 B CN 110119099B
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- 238000010411 cooking Methods 0.000 title claims abstract description 180
- 238000010438 heat treatment Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007613 environmental effect Effects 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/086—Pressure-cookers; Lids or locking devices specially adapted therefor with built-in heating means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/2483—Warming devices with electrical heating means
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/32—Time-controlled igniting mechanisms or alarm devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2643—Oven, cooking
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Induction Heating Cooking Devices (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
The invention discloses a heating control method of an electromagnetic cooking appliance and the electromagnetic cooking appliance, wherein the heating control method of the electromagnetic cooking appliance comprises the following steps: when a heating trigger signal is received, acquiring a first environment temperature value; judging whether the first environmental temperature value is greater than a preset high-temperature threshold value or not; if yes, controlling the electromagnetic cooking appliance to heat according to a first preset mode; if not, judging whether the first environment temperature value is smaller than a preset low-temperature threshold value or not; if yes, controlling the electromagnetic cooking appliance to heat according to a second preset mode; if not, controlling the electromagnetic cooking appliance to heat according to a third preset mode. The heating control method of the electromagnetic cooking appliance can control the electromagnetic cooking appliance to work by combining with the ambient temperature, and is high in reliability.
Description
Technical Field
The invention relates to the technical field of heating control of electromagnetic cooking appliances, in particular to a heating control method of an electromagnetic cooking appliance and the electromagnetic cooking appliance.
Background
Currently, in the market, only temperature sensors are installed near a heating component and an Insulated Gate Bipolar Transistor (IGBT) of an electromagnetic cooking appliance, and temperature detection of a cooking stove panel and the IGBT is performed respectively. Because the software control scheme of the electromagnetic cooking appliance is set based on the room temperature (20-30 ℃), the electromagnetic cooking appliance has the problem of abnormal work caused by software misjudgment under some extreme environments (such as minus 30 ℃ or minus 45 ℃).
Although the existing electromagnetic cooking appliance comprises a temperature sensor, the sensor is arranged close to a stove panel or an IGBT, and the output electric signal of the sensor changes in real time along with the change of the heating state of the electromagnetic cooking appliance, so that the environmental temperature cannot be detected, and the problem of software misjudgment in extreme environments cannot be solved. Thus, the application range of the electromagnetic cooking appliance is limited. For example, when the electromagnetic cooking appliance is used in india, russia, etc., it may abnormally operate.
Disclosure of Invention
The invention mainly aims to provide a heating control method of an electromagnetic cooking appliance, aiming at improving the reliability of the corresponding electromagnetic cooking appliance.
In order to achieve the above object, the present invention provides a heating control method for an electromagnetic cooking appliance, comprising the steps of:
when a heating trigger signal is received, acquiring a first environment temperature value;
judging whether the first environmental temperature value is larger than a preset high-temperature threshold value or not;
if yes, controlling the electromagnetic cooking appliance to heat according to a first preset mode;
if not, judging whether the first environment temperature value is smaller than a preset low-temperature threshold value or not;
If yes, controlling the electromagnetic cooking appliance to heat according to a second preset mode;
if not, controlling the electromagnetic cooking appliance to heat according to a third preset mode.
Preferably, the acquiring the first ambient temperature value specifically includes:
when the electromagnetic cooking appliance is in a working state, acquiring and storing a current environment temperature value at a preset frequency;
and when the working time of the electromagnetic cooking appliance reaches a first preset time, calculating the average value of the environmental temperature values stored in the preset time period of the first preset time, and taking the average value as a first environmental temperature value.
Preferably, the preset frequency is at
To between 5 Hz.
Preferably, the first preset time period is greater than 5S.
Preferably, the controlling the electromagnetic cooking appliance to heat according to the first preset mode specifically includes:
controlling the electromagnetic cooking appliance to heat according to a preset high-temperature mode;
when the working time of the electromagnetic cooking appliance reaches a second preset time, acquiring a second environment temperature value;
judging whether the second ambient temperature value is valid;
if so, controlling the electromagnetic cooking appliance to continue heating according to the preset high-temperature mode;
and if not, controlling the electromagnetic cooking appliance to stop heating.
Preferably, the controlling the electromagnetic cooking appliance to heat according to the second preset mode specifically includes:
controlling the electromagnetic cooking appliance to heat according to a preset low-temperature mode;
when the working time of the electromagnetic cooking appliance reaches a third preset time, acquiring a third environmental temperature value;
judging whether the third ambient temperature value is valid;
if so, controlling the electromagnetic cooking appliance to continue heating according to the preset low-temperature heating mode;
if not, controlling the electromagnetic cooking appliance to stop heating.
Preferably, the controlling the electromagnetic cooking appliance to heat according to the third preset mode specifically includes:
controlling the electromagnetic cooking appliance to heat according to a preset normal-temperature mode;
when the working time of the electromagnetic cooking appliance reaches a fourth preset time, acquiring a fourth environmental temperature value;
judging whether the fourth environmental temperature value is effective or not;
if so, controlling the electromagnetic cooking appliance to continue heating according to the preset normal-temperature mode;
and if not, controlling the electromagnetic cooking appliance to stop heating.
Correspondingly, the invention also provides an electromagnetic cooking appliance, which comprises a temperature acquisition circuit, a control chip and a heating control program of the electromagnetic cooking appliance, wherein the heating control program is stored in the control chip and can run on the control chip; wherein,
The temperature acquisition circuit is used for acquiring the ambient temperature and outputting an electric signal corresponding to the ambient temperature;
when the heating control program of the electromagnetic cooking appliance is executed by the control chip, the steps of the heating control method of the electromagnetic cooking appliance are realized.
Preferably, the electromagnetic cooking appliance further comprises a display panel, and the temperature acquisition circuit comprises a temperature sensor, and the temperature sensor is mounted on the display panel.
Preferably, the electromagnetic cooking appliance is an induction cooker, an electric cooker or a pressure cooker.
According to the technical scheme, when a heating trigger signal is received, a first environment temperature value is obtained, and when the first environment temperature value is higher than a preset high-temperature threshold value, an electromagnetic cooking appliance is controlled to heat according to a first preset mode; when the first environmental temperature value is lower than a preset low-temperature threshold value, controlling the electromagnetic cooking appliance to heat according to a second preset mode; and when the first environmental temperature value is between the low temperature threshold value and the high temperature threshold value, controlling the electromagnetic cooking appliance to heat according to a third preset mode. Thus, the electromagnetic cooking appliance does not work abnormally even under extreme environments. Therefore, compared with the prior art, the technical scheme of the invention has the characteristic of high reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating a heating control method for an electromagnetic cooking apparatus according to an embodiment of the present invention;
FIG. 2 is a detailed flowchart of step S100 in FIG. 1;
FIG. 3 is a detailed flowchart of step S300 in FIG. 1;
FIG. 4 is a detailed flowchart of step S500 in FIG. 1;
FIG. 5 is a detailed flowchart of step S600 in FIG. 1;
fig. 6 is a functional block diagram of an electromagnetic cooking apparatus according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the descriptions relating to "first", "second", etc. in the present invention are only used for descriptive purposes 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 at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, the present invention further provides a heating control method for an electromagnetic cooking appliance, including the following steps:
s100, acquiring a first environment temperature value when a heating trigger signal is received;
here, the heating trigger signal may be a power-on signal of the electromagnetic cooking appliance, an operating state switching signal of the electromagnetic cooking appliance, or the like.
For example, the heating trigger signal is a power-on signal of the electromagnetic cooking appliance, and when the electromagnetic cooking appliance is switched from a power-off state or a standby state to a power-on state, the heating trigger signal is equivalently output.
Or the electromagnetic oven has two working states, wherein the first working state does not need to be combined with the control of the ambient temperature for heating, and the second working state needs to be combined with the control of the ambient temperature for heating. Then, the electromagnetic oven is switched from the first working state to the second working state, which is equivalent to outputting a heating trigger signal.
The first environmental temperature value refers to the temperature of the place where the electromagnetic cooking appliance is used. The first temperature value can be higher than 45 ℃ above zero or lower than 30 ℃ below zero, and the value range of the first temperature value is not limited here.
Referring to fig. 2, specifically, the first ambient temperature value may be obtained as follows:
and S110, when the electromagnetic cooking appliance is in a working state, acquiring and storing the current environmental temperature value at a preset frequency.
In this embodiment, after receiving the heating trigger signal, the electromagnetic cooking appliance is always in the operating state.
It can be understood that, in this embodiment, the higher the preset frequency is, the more accurate the acquired environmental temperature value is, and the faster operation speed is required; the lower the preset frequency is, the larger the error of the acquired environmental temperature value is, and the slower the required operation speed is. In combination with the above two factors, in the present embodiment, the preset frequency can be selected 
To between 5 Hz.
S120, when the working time of the electromagnetic cooking appliance reaches a first preset time, calculating the average value of the environmental temperature values stored in a preset time period of the first preset time, and taking the average value as a first environmental temperature value;
here, the first preset time period needs to be set to 5S or more to ensure that the electromagnetic cooking appliance itself does not malfunction and can stably operate.
It can be understood that if the duration corresponding to the preset time period of the first preset duration is too short, a false determination may be caused by too few temperature collecting samples, and if the duration corresponding to the preset time period of the first preset duration is too long, the reference function of the first environmental temperature value may be lost due to too long delay time. In combination with the above two factors, in this embodiment, the duration corresponding to the preset time period of the first preset duration is 3S, and the starting time and the ending time are not limited here.
In the following, taking the preset frequency as 1Hz, the first preset duration as 5S, and the duration corresponding to the preset time period of the first preset duration as 3S as an example, how to obtain the first ambient temperature value is described in this embodiment:
firstly, collecting and storing a current environment temperature value every 1S;
Then, when the working time of the electromagnetic cooking appliance reaches 5S, calculating the average value of the stored environmental temperature value within 3S;
thus, the current ambient temperature values saved within 3S are Temp1, Temp and Temp3, respectively;
finally, the average of Temp1, Temp, and Temp3 is calculated and saved as the first ambient temperature value, such that the first ambient temperature value is (Temp1, Temp, and Temp 3)/3.
S200, judging whether the first environmental temperature value is larger than a preset high-temperature threshold value or not;
the high temperature threshold is between 35 ℃ and 55 ℃ above zero. In order to facilitate the heating control of the electromagnetic cooking appliance, preferably, the high temperature threshold may be selected to be 45 ℃.
In addition, the obtained first ambient temperature may be compared with a high temperature threshold, or the quotient of the first ambient temperature and the high temperature threshold may be compared to determine whether the first ambient temperature value is greater than a preset high temperature threshold.
For example, when the difference between the first ambient temperature value and the high temperature threshold is greater than zero, it is determined that the first ambient temperature value is greater than a preset high temperature threshold, otherwise, it is determined that the first ambient temperature value is less than or equal to the high temperature threshold. Or when the quotient of the first environment temperature and the high-temperature threshold is greater than one, the first environment temperature value is judged to be greater than a preset high-temperature threshold, otherwise, the first environment temperature value is judged to be less than or equal to the high-temperature threshold.
Referring to fig. 3, when it is determined that the first ambient temperature value is greater than the preset high temperature threshold, step S300 is executed to control the electromagnetic cooking appliance to heat according to a first preset mode;
the method specifically comprises the following steps:
s310, controlling the electromagnetic cooking appliance to heat according to a preset high-temperature mode;
s320, when the working time of the electromagnetic cooking appliance reaches a second preset time, acquiring a second environment temperature value;
here, the second preset time may be set between 5min and 15 min. And the second environment temperature value is a temperature value of a place where the electromagnetic cooking appliance is used when the working time of the electromagnetic cooking appliance reaches a second preset time.
S330, judging whether the second ambient temperature value is valid;
specifically, the following method may be adopted to determine whether the second ambient temperature value is valid:
firstly, calculating a difference value between a second environment temperature value and a first environment temperature value; then, whether the second ambient temperature value is valid is determined according to the absolute value of the difference.
If the absolute value of the difference value is within the preset temperature difference range, judging that the second environment temperature value is effective; otherwise, the second ambient temperature value is determined to be invalid. Wherein the preset temperature difference range can be between 0 ℃ and 3 ℃.
S340, when the second ambient temperature value is judged to be effective, controlling the electromagnetic cooking appliance to continue heating according to a preset high-temperature mode;
and S350, controlling the electromagnetic cooking appliance to stop heating when the second ambient temperature value is judged to be invalid.
In the following, the heating process of the electromagnetic cooking device in the present embodiment is explained:
firstly, heating the electromagnetic cooking appliance according to a preset high-temperature mode;
after the second preset time, if the ambient temperature detection mechanism of the electromagnetic cooking appliance is normal, the electromagnetic cooking appliance continues to be heated according to a preset high-temperature mode; if the environment temperature detection mechanism of the electromagnetic cooking appliance is abnormal (such as the wiring of the environment temperature detection device therein is abnormal), the electromagnetic cooking appliance stops heating.
It can be understood that, in the present embodiment, the second ambient temperature value is valid, which may indicate that the ambient temperature detection mechanism of the electromagnetic cooking appliance is normal; the second ambient temperature value is invalid, which may indicate that the ambient temperature detection mechanism of the electromagnetic cooking appliance is abnormal. According to the technical scheme, the electromagnetic cooking appliance is controlled to perform heating in a single heating task only under the condition that the environment detection mechanism of the electromagnetic cooking appliance is determined to be normal, heating is performed according to a high-temperature mode for a long time, and reliability is high.
When the first environmental temperature value is not greater than the preset high-temperature threshold value, executing step S400, and determining whether the first environmental temperature value is less than the preset low-temperature threshold value;
the low-temperature threshold here is between-40 ℃ and 20 ℃. In order to facilitate the heating control of the electromagnetic cooking appliance, the low temperature threshold may be preferably 30 ℃.
In addition, the obtained first environment temperature can be compared with the low temperature, and the quotient of the first environment temperature and the high temperature threshold can also be compared to determine whether the first environment temperature value is smaller than the preset low temperature threshold.
For example, when the difference between the first ambient temperature value and the low-temperature threshold is smaller than zero, it is determined that the first ambient temperature value is smaller than the preset low-temperature threshold, otherwise, it is determined that the first ambient temperature value is greater than or equal to the threshold. Or when the quotient of the first environment temperature and the low-temperature threshold is greater than one, the first environment temperature value is judged to be smaller than the preset low-temperature threshold, otherwise, the first environment temperature value is judged to be greater than or equal to the low-temperature threshold.
Referring to fig. 4, when it is determined that the first ambient temperature value is smaller than the preset low-temperature threshold, step S500 is executed to control the electromagnetic cooking appliance to heat according to a second preset mode;
The method specifically comprises the following steps:
s510, controlling the electromagnetic cooking appliance to heat according to a preset low-temperature mode;
s520, when the working time of the electromagnetic cooking appliance reaches a third preset time, acquiring a third environment temperature value;
the fourth preset time can be set to be between 5min and 15min, and the third environmental temperature value is a temperature value of a place where the electromagnetic cooking appliance is used when the working time of the electromagnetic cooking appliance reaches the third preset time.
S530, judging whether the third ambient temperature value is effective;
specifically, the following manner can be adopted for judgment:
firstly, the difference value between the third environment temperature value and the first environment temperature value is calculated, and then whether the third environment temperature value is effective or not is judged according to the absolute value of the difference value.
Specifically, if the absolute value of the difference is within a preset temperature difference range, determining that the third environmental temperature value is valid; otherwise, the third ambient temperature value is determined to be invalid. Wherein the preset temperature difference range can be selected from 0 ℃ to 3 ℃.
S540, when the third environment temperature value is judged to be effective, controlling the electromagnetic cooking appliance to continue heating according to a preset low-temperature mode;
and S550, controlling the electromagnetic cooking appliance to stop heating when the third environment temperature value is judged to be invalid.
In the following, the heating process of the electromagnetic cooking device in the present embodiment is explained:
firstly, heating the electromagnetic cooking appliance according to a preset low-temperature mode;
after a third preset time, if the ambient temperature detection mechanism of the electromagnetic cooking appliance is normal, the electromagnetic cooking appliance continues to be heated according to a preset low-temperature mode; if the environment temperature detection mechanism of the electromagnetic cooking appliance is abnormal (such as the wiring of the environment temperature detection device therein is abnormal), the electromagnetic cooking appliance stops heating.
It can be understood that, in this embodiment, the third ambient temperature value is valid, which may indicate that an ambient temperature detection mechanism of the electromagnetic cooking appliance is normal, and the third ambient temperature value is invalid, which may indicate that the ambient temperature detection mechanism of the electromagnetic cooking appliance is abnormal. According to the technical scheme, the electromagnetic cooking appliance is controlled to perform heating in a low-temperature mode for a long time under the condition that the environment detection mechanism of the electromagnetic cooking appliance is determined to be normal, and the reliability is high.
Referring to fig. 5, when it is determined that the first ambient temperature value is not less than the preset low temperature threshold, step S600 is executed to control the electromagnetic cooking appliance to heat according to a third preset mode.
The method specifically comprises the following steps:
S610, controlling the electromagnetic cooking appliance to heat according to a normal-temperature mode;
s620, when the working time of the electromagnetic cooking appliance reaches a fourth preset time, acquiring a fourth environment temperature value;
the fourth preset time can be set to be between 5min and 15min, and the fourth environmental temperature value is a temperature value of a place where the electromagnetic cooking appliance is used when the working time of the electromagnetic cooking appliance reaches the fourth preset time.
S630, judging whether the fourth environment temperature value is effective;
specifically, the following manner can be adopted for judgment:
firstly, a difference value between the fourth environment temperature value and the first environment temperature value is calculated, and then whether the fourth environment temperature value is effective or not is judged according to an absolute value of the difference value.
If the absolute value of the difference value is within the preset temperature difference range, judging that the fourth environment temperature value is valid; otherwise, the fourth ambient temperature value is determined to be invalid. Wherein the preset temperature difference range can be selected from 0 ℃ to 3 ℃.
S640, when the fourth environment temperature value is judged to be effective, controlling the electromagnetic cooking appliance to continue heating according to a high-temperature mode;
and S650, controlling the electromagnetic cooking appliance to stop heating when the fourth environment temperature value is judged to be invalid.
Hereinafter, the heating process of the electromagnetic cooking device in the present embodiment is explained:
Firstly, heating an electromagnetic cooking appliance according to a preset normal-temperature mode;
after the fourth preset time, if the ambient temperature detection mechanism of the electromagnetic cooking appliance is normal, the electromagnetic cooking appliance continues to be heated according to a preset normal temperature mode; if the environment temperature detection mechanism of the electromagnetic cooking appliance is abnormal (such as the wiring of the environment temperature detection device therein is abnormal), the electromagnetic cooking appliance stops heating.
It can be understood that, in this embodiment, the fourth ambient temperature value is valid, which may indicate that an ambient temperature detection mechanism of the electromagnetic cooking appliance is normal, and the fourth ambient temperature value is invalid, which may indicate that the ambient temperature detection mechanism of the electromagnetic cooking appliance is abnormal. According to the technical scheme, the electromagnetic cooking appliance is controlled to perform heating in a normal-temperature mode for a long time under the condition that the environment detection mechanism of the electromagnetic cooking appliance is determined to be normal, and the reliability is high.
Correspondingly, the invention further provides an electromagnetic cooking appliance. The electromagnetic cooking appliance is provided with a heating part and can realize heating cooking functions, such as an electromagnetic oven, an electric cooker, an electric pressure cooker and the like.
Referring to fig. 6, in an embodiment, the electromagnetic cooking appliance includes a temperature acquisition circuit 20, a control chip 10, and a heating control program stored in the control chip 10 and capable of being executed according to the electromagnetic cooking appliance running on the control chip 10, wherein an output end of the temperature acquisition circuit 20 is connected to an input end of the control chip 10. The temperature acquisition circuit 20 is used for acquiring the ambient temperature and outputting an electric signal corresponding to the ambient temperature; when executed by the control chip 10, the heating control program of the electromagnetic cooking appliance realizes the steps of the heating control method of the electromagnetic cooking appliance.
In this embodiment, it should be noted that:
(1) the temperature acquisition circuit 20 includes a temperature sensor, which may be selected from a thermocouple (not shown), a thermistor (not shown), and the like. When the temperature sensor is a thermistor, the electrical signal may be selected as a voltage signal. The thermistor may be a positive temperature coefficient thermistor or a negative temperature coefficient thermistor, and is not limited herein.
(2) The ambient temperature refers to the temperature of the place where the electromagnetic cooking appliance is used. For example, when the electromagnetic cooking device is used in a certain russia family, the ambient temperature is the temperature of the certain russia family.
Specifically, in the working process of the electromagnetic cooking appliance, the temperature acquisition circuit 20 acquires the ambient temperature and outputs an electric signal corresponding to the ambient temperature to the control chip 10, so that the control chip 10 controls the electromagnetic cooking appliance to work in combination with the ambient temperature. Therefore, under the extreme environment, the probability of misjudgment of the software control scheme of the electromagnetic cooking appliance is greatly reduced, and the normal work of the electromagnetic cooking appliance is ensured. Therefore, compared with the prior art, the reliability of the electromagnetic cooking appliance is higher.
In order to further improve the reliability of the electromagnetic cooking apparatus, in an alternative embodiment, the electromagnetic cooking apparatus further comprises a display board (not shown), so that the temperature sensor in the temperature collecting circuit 20 is mounted on the display board.
It can be understood that, during the operation of the electromagnetic cooking appliance, the electromagnetic cooking appliance itself generates heat, and the temperature of parts of the devices therein is increased. That is, the electric signal output by the temperature sensor may be affected by the temperature-increasing device of the electromagnetic cooking appliance, and the electric signal received by the control chip 10 may be unreliable.
It is known that, during the operation of the electromagnetic cooking apparatus, the temperature of the display panel is not substantially affected by the output heat of the electromagnetic cooking apparatus and approaches the ambient temperature, and therefore, the reliability of the electromagnetic cooking apparatus can be further improved by mounting the temperature sensor on the display panel.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.
Claims (8)
1. A heating control method of an electromagnetic cooking appliance is characterized by comprising the following steps:
when a heating trigger signal is received, acquiring a first environment temperature value; the first environmental temperature value refers to the temperature of the place where the electromagnetic cooking appliance is used;
Judging whether the first environmental temperature value is larger than a preset high-temperature threshold value or not;
if yes, controlling the electromagnetic cooking appliance to heat according to a first preset mode;
if not, judging whether the first environmental temperature value is smaller than a preset low-temperature threshold value or not;
if yes, controlling the electromagnetic cooking appliance to heat according to a second preset mode;
if not, controlling the electromagnetic cooking appliance to heat according to a third preset mode;
when receiving the heating trigger signal, the acquiring of the first ambient temperature value specifically includes:
the electromagnetic cooking appliance comprises a display panel, a temperature sensor is mounted on the display panel, and when a heating trigger signal is received, a first environment temperature value is obtained by the temperature sensor;
wherein, according to first preset mode control electromagnetism cooking utensil heating includes:
controlling the electromagnetic cooking appliance to heat according to a preset high-temperature mode;
when the working time of the electromagnetic cooking appliance reaches a second preset time, acquiring a second ambient temperature value;
judging whether the second ambient temperature value is valid;
if so, controlling the electromagnetic cooking appliance to continue heating according to the preset high-temperature mode;
If not, the detection result shows that the environment temperature detection mechanism of the electromagnetic cooking appliance is abnormal, and the electromagnetic cooking appliance is controlled to stop heating;
wherein the obtaining a first ambient temperature value includes:
when the electromagnetic cooking appliance is in a working state, collecting and storing a current environment temperature value at a preset frequency;
when the working time of the electromagnetic cooking appliance reaches a first preset time, calculating the average value of the environmental temperature values stored in the preset time period of the first preset time, and taking the average value as a first environmental temperature value.
2. The heating control method of the electromagnetic cooking appliance according to claim 1, wherein the preset frequency is between 13Hz and 5 Hz.
3. The heating control method of the electromagnetic cooking appliance according to claim 1, wherein the first preset time period is more than 5S.
4. The heating control method of the electromagnetic cooking appliance according to any one of claims 1 to 3, wherein the controlling the electromagnetic cooking appliance to heat according to the second preset mode specifically comprises:
controlling the electromagnetic cooking appliance to heat according to a preset low-temperature mode;
when the working time of the electromagnetic cooking appliance reaches a third preset time, acquiring a third environmental temperature value;
Judging whether the third ambient temperature value is valid;
if so, controlling the electromagnetic cooking appliance to continue heating according to the preset low-temperature heating mode;
if not, controlling the electromagnetic cooking appliance to stop heating.
5. The heating control method of the electromagnetic cooking appliance according to any one of claims 1 to 3, wherein the controlling the electromagnetic cooking appliance to heat according to the third preset mode specifically comprises:
controlling the electromagnetic cooking appliance to heat according to a preset normal-temperature mode;
when the working time of the electromagnetic cooking appliance reaches a fourth preset time, acquiring a fourth environmental temperature value;
judging whether the fourth environmental temperature value is effective or not;
if so, controlling the electromagnetic cooking appliance to continue heating according to the preset normal-temperature mode;
if not, controlling the electromagnetic cooking appliance to stop heating.
6. An electromagnetic cooking appliance is characterized by comprising a temperature acquisition circuit, a control chip and a heating control program of the electromagnetic cooking appliance, wherein the heating control program is stored in the control chip and can run on the control chip, and the output end of the temperature acquisition circuit is connected with the input end of the control chip; wherein,
The temperature acquisition circuit is used for acquiring the ambient temperature and outputting an electric signal corresponding to the ambient temperature;
the steps of the heating control method of the electromagnetic cooking appliance according to any one of claims 1 to 5 are realized when the heating control program of the electromagnetic cooking appliance is executed by the control chip.
7. The electromagnetic cooking appliance of claim 6, wherein said electromagnetic cooking appliance further comprises a display panel, and said temperature acquisition circuit comprises a temperature sensor mounted on said display panel.
8. The electromagnetic cooking appliance according to claim 6 or 7, wherein the electromagnetic cooking appliance is an induction cooker, an electric cooker or a pressure cooker.
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| CN110972342B (en) * | 2019-11-13 | 2022-03-15 | 九阳股份有限公司 | Sensor high-temperature alarm threshold compensation method and electromagnetic heating equipment |
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