CN111265103A - Method and device for controlling temperature and cooking appliance - Google Patents
Method and device for controlling temperature and cooking appliance Download PDFInfo
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- CN111265103A CN111265103A CN201811474232.5A CN201811474232A CN111265103A CN 111265103 A CN111265103 A CN 111265103A CN 201811474232 A CN201811474232 A CN 201811474232A CN 111265103 A CN111265103 A CN 111265103A
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- 238000010411 cooking Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 190
- 230000001276 controlling effect Effects 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004321 preservation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
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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
- A47J27/086—Pressure-cookers; Lids or locking devices specially adapted therefor with built-in 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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Abstract
The invention discloses a method and a device for controlling temperature and a cooking appliance. Wherein, this method is applied to cooking utensil, includes: controlling the cooking appliance to heat, and collecting the pot bottom temperature of the cooking appliance; detecting the duration of the pot bottom temperature outside the target temperature range; and under the condition that the duration is longer than the preset duration, adjusting the heating power of the heating load according to the temperature of the pot bottom so as to enable the temperature of the pot bottom to be in the target temperature range. The invention solves the technical problem of large water temperature fluctuation in the boiler caused by stopping heating the heating load after the temperature of the boiler bottom reaches the temperature control point.
Description
Technical Field
The invention relates to the field of cooking appliances, in particular to a method and a device for controlling temperature and a cooking appliance.
Background
The electric pressure cooker has a certain height of pressure in the cooker, can cook quickly and efficiently, and is popular with people. At present, the electric pressure cooker is a heating plate pressure cooker, namely, the electric pressure cooker is heated by the heating plate. The heating plate can transmit heat to an NTC (Negative temperature coefficient) of the bottom of the electric pressure cooker while transmitting heat to the pot body of the electric pressure cooker, the NTC can generate different resistance values according to the sensed temperature, and the temperature measuring circuit can determine the temperature of the bottom of the electric pressure cooker according to the resistance value of the NTC, so that the aim of controlling the temperature in the pot of the electric pressure cooker is fulfilled.
However, a certain time period is required for the NTC of the heat generating plate to transfer heat to the pan bottom, thereby causing a delay in NTC temperature sensing. As shown in fig. 1, when the temperature of the pot bottom does not reach the temperature control point temperature, that is, the temperature of the pot bottom is less than or equal to the temperature control point temperature, the control program of the electric pressure cooker controls the heating plate to heat according to the heating duty ratio; when the temperature of the pot bottom reaches the temperature of the temperature control point, the control program of the electric pressure cooker controls the heating plate to stop heating, but the NTC overshoots due to the waste heat of the heating plate, so that the temperature of the pot bottom fluctuates greatly up and down, and the water temperature in the pot fluctuates up and down.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling temperature and a cooking utensil, which at least solve the technical problem that the temperature of water in a pot fluctuates greatly because heating of a heating load is stopped after the temperature of the bottom of the pot reaches a temperature control point.
According to an aspect of an embodiment of the present invention, there is provided a method of controlling temperature, applied to a cooking appliance, including: controlling the cooking appliance to heat, and collecting the pot bottom temperature of the cooking appliance; detecting the duration of the pot bottom temperature outside the target temperature range; and under the condition that the duration is longer than the preset duration, adjusting the heating power of the heating load according to the temperature of the pot bottom so as to enable the temperature of the pot bottom to be in the target temperature range.
In the embodiment of the invention, after the pot bottom temperature of the cooking appliance reaches the preset temperature (namely the temperature control point temperature), the controller of the cooking appliance does not control the heating load to stop heating, but detects the duration of the pot bottom temperature out of the target temperature range, and adjusts the heating power of the heating load according to the duration. In the adjusting process, the temperature fluctuation of the bottom of the cooker in the cooker is small and is maintained in a target temperature range, so that the fluctuation of the temperature in the cooker of the cooker is reduced, the stability of the temperature in the cooker is realized, and the technical problem of large water temperature fluctuation in the cooker caused by stopping heating the heating load after the temperature of the bottom of the cooker reaches a temperature control point is solved.
Further, detecting a duration that the pan bottom temperature is outside the target temperature range includes: detecting whether the temperature of the pot bottom reaches a preset temperature or not, wherein the target temperature range comprises the preset temperature; detecting whether the temperature of the pot bottom is within a target temperature range or not after the temperature of the pot bottom reaches a preset temperature; and recording the duration of the pan bottom temperature outside the target temperature range under the condition that the pan bottom temperature is detected to be outside the target temperature range. After the temperature of the pan bottom reaches the preset temperature (namely the temperature of the temperature control point), whether the temperature of the pan bottom is in the target temperature range is further determined, so that the fluctuation range of the temperature of the pan bottom is reduced.
Further, adjusting the heating power of the heating load according to the temperature of the bottom of the pan comprises: under the condition that the duration is detected to be longer than the preset duration, acquiring the temperature difference value between the pot bottom temperature and the preset temperature, wherein different temperature difference values correspond to different heating powers; determining a heating duty ratio according to the temperature difference; and adjusting the heating power of the heating load according to the heating duty ratio. The purpose of quickly adjusting the heating power of the heating load is achieved by adjusting the heating duty ratio, and the stability of the temperature of the pot bottom is further ensured.
Further, determining a heating duty cycle based on the temperature difference includes: acquiring the current heating duty ratio of a heating load; under the condition that the temperature of the pot bottom is higher than the preset temperature, reducing the current heating duty ratio according to the temperature difference value to obtain the heating duty ratio; and under the condition that the temperature of the pot bottom is not more than the preset temperature, increasing the current heating duty ratio according to the temperature difference value to obtain the heating duty ratio. The most suitable heating duty ratio is determined according to different temperature difference values, and the effect of reducing the fluctuation range of the temperature of the pot bottom is realized.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus for controlling temperature, including: the acquisition module is used for controlling the cooking appliance to perform heating work and acquiring the pot bottom temperature of the cooking appliance; the detection module is used for detecting the duration that the temperature of the pot bottom is out of the target temperature range; and the control module is used for adjusting the heating power of the heating load according to the temperature of the pot bottom under the condition that the duration is longer than the preset duration so as to enable the temperature of the pot bottom to be within the target temperature range.
According to another aspect of the embodiments of the present invention, there is also provided a cooking appliance including: the temperature collector is used for controlling the cooking appliance to heat and collecting the pot bottom temperature of the cooking appliance; and the controller is used for detecting the duration that the temperature of the pan bottom is out of the target temperature range, and adjusting the heating power of the heating load according to the temperature of the pan bottom under the condition that the duration is longer than the preset duration so as to enable the temperature of the pan bottom to be in the target temperature range.
Further, the cooking appliance further includes: and the thermistor is contacted with the pot bottom of the cooking utensil and is connected with the temperature collector, and the temperature collector collects the temperature of the pot bottom by detecting the resistance value of the thermistor.
Furthermore, the temperature collector is connected with the first end of the first resistor, the second end of the first resistor is connected with the first end of the thermistor and the first end of the second resistor, the second end of the second resistor is connected with the ground wire, the first end of the first resistor is connected with the ground wire through the capacitor, and the second end of the thermistor is connected with the power supply.
Further, the cooking appliance is an electric pressure cooker.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein the apparatus on which the storage medium is controlled performs a method of controlling a temperature when the program is executed.
According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, wherein the program executes a method of controlling temperature.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of a method of controlling temperature according to the prior art;
FIG. 2 is a flow chart of a method of controlling temperature according to an embodiment of the present invention;
FIG. 3 is a flow chart of an alternative method of controlling temperature in accordance with an embodiment of the present invention;
FIG. 4 is a temperature control curve of an alternative pan bottom temperature according to an embodiment of the present invention;
FIG. 5 is a schematic view of an apparatus for controlling temperature according to an embodiment of the present invention;
FIG. 6 is a schematic view of a cooking appliance according to an embodiment of the present invention; and
fig. 7 is a schematic diagram of an alternative temperature acquisition circuit according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a method of controlling temperature, it being noted that the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
Fig. 2 is a flowchart of a method of controlling temperature according to an embodiment of the present invention, as shown in fig. 2, the method including the steps of:
and S202, controlling the cooking appliance to perform heating work, and collecting the pot bottom temperature of the cooking appliance.
It should be noted that the cooking appliance may be, but is not limited to, an electric pressure cooker. When the electric pressure cooker works, the heating load of the electric pressure cooker is in contact with the cooker body of the electric pressure cooker, the heating load can generate heat and transfer the heat to the cooker body, and therefore the purpose of heating the cooker body of the electric pressure cooker is achieved. Wherein, the heating load of the electric pressure cooker can be but not limited to a heating plate. In addition, a temperature collector (for example, a temperature sensor) for detecting temperature is arranged in the cooking appliance, and the temperature collector can collect the temperature of the bottom of the pot of the cooking appliance, wherein the temperature collector can be a 12-bit temperature collector, the precision of the temperature collector is 0.1 degree, and the temperature detection of the cooking appliance is more accurate.
And step S204, detecting the duration of the pot bottom temperature outside the target temperature range.
It should be noted that the target temperature range may be a temperature range corresponding to a cooking state preset by a user, for example, after cooking is completed, the electric pressure cooker enters a heat preservation state, and at this time, the target temperature range is a temperature variation range when the electric pressure cooker performs heat preservation.
In an alternative scheme, the user sets the execution program of the electric pressure cooker, and sets the electric pressure cooker to keep warm at 56 ℃ after cooking. After cooking is finished, the electric pressure cooker can set a target temperature range to be 55-57 ℃ according to the setting of a user, namely when the temperature of the bottom of the cooker is within the range of 55-57 ℃, the electric pressure cooker does not operate, when the temperature of the bottom of the cooker is outside the range of 55-57 ℃, for example, the temperature of the bottom of the cooker is less than 55 ℃, or the temperature of the bottom of the cooker is more than 57 ℃, the electric pressure cooker starts timing, detects the duration of the temperature of the bottom of the cooker outside the range of 55-57 ℃, for example, when the temperature of the bottom of the electric pressure cooker is less than 55 ℃ when the ratio of the temperature of the bottom of the electric pressure.
And step S206, under the condition that the duration is longer than the preset duration, adjusting the heating power of the heating load according to the temperature of the pot bottom so as to enable the temperature of the pot bottom to be within the target temperature range.
Optionally, the heating power of the heating load may be adjusted by calculating a temperature difference between the bottom temperature and the temperature control point temperature, where the temperature control point temperature is a temperature at which the cooking appliance enters a preset state, for example, when the bottom temperature of the electric pressure cooker reaches 60 ℃, the electric pressure cooker enters a heat preservation state, and the temperature control point temperature of the electric pressure cooker is 60 ℃.
It should be noted that different temperature differences correspond to different heating powers, for example, if the pot bottom temperature is greater than the temperature of the temperature control point, the larger the temperature difference is, the smaller the heating power of the heating load is; the temperature of the pot bottom is lower than the temperature of the temperature control point, the larger the temperature difference is, the larger the heating power of the heating load is.
With the above-described embodiments of the present invention, after the pot bottom temperature of the cooking appliance reaches the preset temperature (i.e., the temperature control point temperature), the controller of the cooking appliance does not control the heating load to stop heating, but detects the duration of the pot bottom temperature outside the target temperature range, and adjusts the heating power of the heating load according to the duration. In the adjusting process, the temperature fluctuation of the bottom of the cooker in the cooker is small and is maintained in a target temperature range, so that the fluctuation of the temperature in the cooker of the cooker is reduced, the stability of the temperature in the cooker is realized, and the technical problem of large water temperature fluctuation in the cooker caused by stopping heating the heating load after the temperature of the bottom of the cooker reaches a temperature control point is solved.
In an alternative, the duration of time during which the pot bottom temperature is outside the target temperature range is detected after the cooking appliance enters the heating mode. Specifically, the cooking appliance firstly detects whether the temperature of the pot bottom reaches a preset temperature, then detects whether the temperature of the pot bottom is within a target temperature range after the temperature of the pot bottom reaches the preset temperature, and records the duration of the temperature of the pot bottom outside the target temperature range under the condition that the temperature of the pot bottom is detected to be outside the target temperature range.
It should be noted that the preset temperature may be a temperature control point temperature of the cooking appliance, and the target temperature range includes the preset temperature, for example, the temperature control point temperature is 56 ℃, and the target temperature range may be 55 ℃ to 57 ℃.
In addition, it should be noted that, after the temperature of the pan bottom reaches the preset temperature (i.e., the temperature of the temperature control point), it is further determined whether the temperature of the pan bottom is within the target temperature range, and when the temperature of the pan bottom is outside the target temperature range, it is indicated that the temperature of the pan bottom needs to be controlled, and at this time, the duration of the temperature of the pan bottom outside the target temperature range is recorded. Wherein, the longer the duration, the larger the deviation of the pan bottom temperature from the target temperature range, that is, the larger the temperature difference to be regulated. When the duration is longer than the preset duration, the power of the heating load of the electric pressure cooker is adjusted, so that the adjusting times of the heating power of the heating load can be reduced.
Further, under the condition that the duration is detected to be longer than the preset duration, the cooking appliance obtains a temperature difference value between the pot bottom temperature and the preset temperature, determines a heating duty ratio according to the temperature difference value, and then adjusts the heating power of the heating load according to the heating duty ratio. Wherein different temperature differences correspond to different heating powers.
Optionally, in the temperature rising process of the electric pressure cooker, the heating power can be set according to the temperature difference between the temperature of the cooker bottom and the preset temperature. Wherein, the smaller the temperature difference, the smaller the heating power. For example, when the temperature difference is greater than 30 ℃, the heating load adopts 90% of full power; when the temperature difference is more than 20 ℃, the heating load adopts 70% of full power; when the temperature difference is more than 10 ℃, the heating load adopts 50% of full power; when the temperature difference is more than 3 ℃, the heating load adopts 30% of full power; when the temperature difference is less than 3 ℃, the heating load adopts 20 percent of full power.
It should be noted that, the above manner can effectively avoid the overshoot of the temperature in the pan, and in addition, the heating power of the heating load can be rapidly adjusted by adjusting the heating power according to different temperature differences and different heating duty ratios, so that the temperature of the pan bottom can rapidly reach the preset temperature, and the stability of the temperature of the pan bottom is further ensured.
Optionally, after determining the temperature difference between the pot bottom temperature and the preset temperature, the cooking appliance further determines the heating duty ratio according to the temperature difference. Specifically, the cooking appliance obtains a current heating duty ratio of a heating load, and reduces the current heating duty ratio according to a temperature difference value under the condition that the temperature of the pot bottom is greater than a preset temperature to obtain the heating duty ratio; and under the condition that the temperature of the pot bottom is not more than the preset temperature, increasing the current heating duty ratio according to the temperature difference value to obtain the heating duty ratio.
It should be noted that, if the duration that the temperature of the pot bottom is outside the target temperature range is longer than the preset duration in the heating process, it indicates that the heat transferred to the pot bottom by the heating load is excessive, and at this time, the cooking appliance reduces the heating duty ratio, that is, the heating power of the heating load is reduced. If the temperature of the pot bottom does not reach the preset temperature for a long time, the fact that the heat quantity transferred to the pot bottom by the heating load is insufficient is indicated, and at the moment, the heating duty ratio of the cooking appliance is increased, namely the heating power of the heating load is increased.
In an alternative arrangement, FIG. 3 shows a flow chart of an alternative method of controlling temperature. As can be seen from FIG. 3, compared with the prior art, the heating load is not controlled to stop heating in the method after the temperature of the pot bottom reaches the preset temperature, two judging steps are added to continuously adjust the heating duty ratio, the temperature of the pot bottom is fluctuated within the target temperature range, and the accurate control of the temperature of the pot bottom is realized. Specifically, after the temperature of the pot bottom is detected to be higher than the preset temperature, the electric pressure cooker further detects whether the duration that the temperature of the pot bottom is out of the target temperature range is longer than the preset duration, if the duration is longer than the preset duration, it indicates that the heat transferred to the pot bottom by the heating load is excessive, and at the moment, the heating duty ratio is reduced, so that the purpose of reducing the heating power of the heating load is achieved. If the temperature of the bottom of the electric pressure cooker does not reach the preset temperature for a long time, the fact that the heat transmitted to the bottom of the cooker by the heating load is insufficient is indicated, and at the moment, the heating duty ratio is improved, and the purpose of improving the heating power of the heating load is achieved.
It should be noted that, by repeatedly executing the above steps, the temperature of the pan bottom will be adjusted to a dynamic balance point, so that the temperature of the pan bottom is stabilized within ± 1 ℃, thereby the temperature of the water in the pan can fluctuate within ± 0.2 ℃, and the purpose of ensuring the temperature of the pan bottom to be stable is achieved. Wherein, fig. 4 is a temperature control curve of the pan bottom temperature obtained by the scheme provided by the application.
Example 2
According to an embodiment of the present invention, there is also provided an embodiment of an apparatus for controlling temperature, where it is to be noted that the apparatus can perform the method for controlling temperature provided in embodiment 1, where fig. 5 is a schematic diagram of the apparatus for controlling temperature according to the embodiment of the present invention, and as shown in fig. 5, the apparatus includes: an acquisition module 501, a detection module 503, and a control module 505.
And the acquisition module 501 is used for controlling the cooking appliance to perform heating work and acquiring the pot bottom temperature of the cooking appliance.
It should be noted that the cooking appliance may be, but is not limited to, an electric pressure cooker. When the electric pressure cooker works, the heating load of the electric pressure cooker is in contact with the cooker body of the electric pressure cooker, the heating load can generate heat and transfer the heat to the cooker body, and therefore the purpose of heating the cooker body of the electric pressure cooker is achieved. Wherein, the heating load of the electric pressure cooker can be but not limited to a heating plate. In addition, a temperature collector (for example, a temperature sensor) for detecting temperature is arranged in the cooking appliance, and the temperature collector can collect the temperature of the bottom of the pot of the cooking appliance, wherein the temperature collector can be a 12-bit temperature collector, the precision of the temperature collector is 0.1 degree, and the temperature detection of the cooking appliance is more accurate.
A detection module 503, configured to detect a duration that the pan bottom temperature is outside the target temperature range.
It should be noted that the target temperature range may be a temperature range corresponding to a cooking state preset by a user, for example, after cooking is completed, the electric pressure cooker enters a heat preservation state, and at this time, the target temperature range is a temperature variation range when the electric pressure cooker performs heat preservation.
In an alternative scheme, the user sets the execution program of the electric pressure cooker, and sets the electric pressure cooker to keep warm at 56 ℃ after cooking. After cooking is finished, the electric pressure cooker can set a target temperature range to be 55-57 ℃ according to the setting of a user, namely when the temperature of the bottom of the cooker is within the range of 55-57 ℃, the electric pressure cooker does not operate, when the temperature of the bottom of the cooker is outside the range of 55-57 ℃, for example, the temperature of the bottom of the cooker is less than 55 ℃, or the temperature of the bottom of the cooker is more than 57 ℃, the electric pressure cooker starts timing, detects the duration of the temperature of the bottom of the cooker outside the range of 55-57 ℃, for example, when the temperature of the bottom of the electric pressure cooker is less than 55 ℃ when the ratio of the temperature of the bottom of the electric pressure.
And the control module 505 is configured to adjust the heating power of the heating load according to the pot bottom temperature when the duration is longer than the preset duration, so that the pot bottom temperature is within the target temperature range.
Optionally, the heating power of the heating load may be adjusted by calculating a temperature difference between the bottom temperature and the temperature control point temperature, where the temperature control point temperature is a temperature at which the cooking appliance enters a preset state, for example, when the bottom temperature of the electric pressure cooker reaches 60 ℃, the electric pressure cooker enters a heat preservation state, and the temperature control point temperature of the electric pressure cooker is 60 ℃.
It should be noted that different temperature differences correspond to different heating powers, for example, if the pot bottom temperature is greater than the temperature of the temperature control point, the larger the temperature difference is, the smaller the heating power of the heating load is; the temperature of the pot bottom is lower than the temperature of the temperature control point, the larger the temperature difference is, the larger the heating power of the heating load is.
With the above-described embodiments of the present invention, after the pot bottom temperature of the cooking appliance reaches the preset temperature (i.e., the temperature control point temperature), the controller of the cooking appliance does not control the heating load to stop heating, but detects the duration of the pot bottom temperature outside the target temperature range, and adjusts the heating power of the heating load according to the duration. In the adjusting process, the temperature fluctuation of the bottom of the cooker in the cooker is small and is maintained in a target temperature range, so that the fluctuation of the temperature in the cooker of the cooker is reduced, the stability of the temperature in the cooker is realized, and the technical problem of large water temperature fluctuation in the cooker caused by stopping heating the heating load after the temperature of the bottom of the cooker reaches a temperature control point is solved.
Example 3
According to an embodiment of the present invention, there is also provided an embodiment of a cooking appliance, which is capable of executing the method for controlling an appliance provided in embodiment 1, wherein fig. 6 is a schematic diagram of a cooking appliance according to an embodiment of the present invention, and as shown in fig. 6, the cooking appliance includes: a temperature collector 601 and a controller 603.
The temperature collector 601 is used for controlling the cooking appliance to perform heating work and collecting the pot bottom temperature of the cooking appliance; and the controller 603 is configured to detect a duration that the pan bottom temperature is outside the target temperature range, and adjust the heating power of the heating load according to the pan bottom temperature when the duration is longer than a preset duration, so that the pan bottom temperature is within the target temperature range.
It should be noted that the cooking appliance may be, but is not limited to, an electric pressure cooker. When the electric pressure cooker works, the heating load of the electric pressure cooker is in contact with the cooker body of the electric pressure cooker, the heating load can generate heat and transfer the heat to the cooker body, and therefore the purpose of heating the cooker body of the electric pressure cooker is achieved. Wherein, the heating load of the electric pressure cooker can be but not limited to a heating plate. In addition, the temperature collector of cooking utensil can gather cooking utensil's bottom of a boiler temperature, and wherein, the temperature collector can be 12 temperature collectors, and its precision is 0.1 degree for cooking utensil's temperature detection is more accurate.
In addition, the target temperature range may be a temperature range corresponding to a cooking state preset by a user, for example, after cooking is completed, the electric pressure cooker enters a heat preservation state, and at this time, the target temperature range is a temperature variation range when the electric pressure cooker is subjected to heat preservation. In addition, different temperature differences correspond to different heating powers, for example, the temperature difference is larger than the temperature of the temperature control point, and the heating power of the heating load is smaller if the temperature difference is larger; the temperature of the pot bottom is lower than the temperature of the temperature control point, the larger the temperature difference is, the larger the heating power of the heating load is.
With the above-described embodiments of the present invention, after the pot bottom temperature of the cooking appliance reaches the preset temperature (i.e., the temperature control point temperature), the controller of the cooking appliance does not control the heating load to stop heating, but detects the duration of the pot bottom temperature outside the target temperature range, and adjusts the heating power of the heating load according to the duration. In the adjusting process, the temperature fluctuation of the bottom of the cooker in the cooker is small and is maintained in a target temperature range, so that the fluctuation of the temperature in the cooker of the cooker is reduced, the stability of the temperature in the cooker is realized, and the technical problem of large water temperature fluctuation in the cooker caused by stopping heating the heating load after the temperature of the bottom of the cooker reaches a temperature control point is solved.
In an alternative, the cooking appliance further comprises: and the thermistor is contacted with the pot bottom of the cooking utensil and is connected with the temperature collector, and the temperature collector collects the temperature of the pot bottom by detecting the resistance value of the thermistor. Alternatively, the thermistor may be an NTC (Negative Temperature Coefficient thermistor).
In an alternative scheme, fig. 7 shows a schematic structural diagram of an alternative temperature acquisition circuit, and as shown in fig. 7, the temperature acquisition device AD1 is connected to a first end of a first resistor R223, a second end of the first resistor R223 is connected to a first end of a thermistor NTC and a first end of a second resistor R222, a second end of the second resistor R222 is connected to a ground, the first end of the first resistor R223 is connected to the ground through a capacitor C213, and the second end of the thermistor NTC is connected to a power supply. Optionally, the thermistor NTC is connected to the temperature collector AD1 through the interface CON 202.
Optionally, the controller of the cooking appliance may further detect whether the temperature of the pan bottom reaches a preset temperature, and continue to detect whether the temperature of the pan bottom is within a target temperature range after the temperature of the pan bottom reaches the preset temperature. And finally, recording the duration of the pan bottom temperature outside the target temperature range under the condition that the pan bottom temperature is detected to be outside the target temperature range. Wherein the target temperature range comprises a preset temperature. After the temperature of the pan bottom reaches the preset temperature (namely the temperature of the temperature control point), whether the temperature of the pan bottom is in the target temperature range is further determined, so that the fluctuation range of the temperature of the pan bottom is reduced.
Optionally, in the case that the duration is detected to be longer than the preset duration, the controller of the cooking appliance further obtains a temperature difference between the pot bottom temperature and the preset temperature, determines a heating duty ratio according to the temperature difference, and then adjusts the heating power of the heating load according to the heating duty ratio. Wherein different temperature differences correspond to different heating powers. The purpose of quickly adjusting the heating power of the heating load is achieved by adjusting the heating duty ratio, and the stability of the temperature of the pot bottom is further ensured.
Optionally, the controller of the cooking appliance may further obtain a current heating duty ratio of the heating load, and reduce the current heating duty ratio according to the temperature difference value to obtain the heating duty ratio when the temperature of the pot bottom is greater than the preset temperature; and under the condition that the temperature of the pot bottom is not more than the preset temperature, increasing the current heating duty ratio according to the temperature difference value to obtain the heating duty ratio. The most suitable heating duty ratio is determined according to different temperature difference values, and the effect of reducing the fluctuation range of the temperature of the pot bottom is realized.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein when the program is executed, an apparatus in which the storage medium is controlled performs the method of controlling temperature in embodiment 1 described above.
Example 5
According to another aspect of the embodiments of the present invention, there is also provided a processor for running a program, wherein the program is run to execute the method for controlling temperature in embodiment 1.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A method of controlling temperature in a cooking appliance, comprising:
controlling the cooking appliance to perform heating work, and collecting the pot bottom temperature of the cooking appliance;
detecting the duration of the pot bottom temperature outside the target temperature range;
and under the condition that the duration is longer than the preset duration, adjusting the heating power of a heating load according to the pot bottom temperature so as to enable the pot bottom temperature to be within the target temperature range.
2. The method of claim 1, wherein detecting the duration that the bottom of pot temperature is outside of a target temperature range comprises:
detecting whether the temperature of the pot bottom reaches a preset temperature or not, wherein the target temperature range comprises the preset temperature;
after the temperature of the pot bottom reaches the preset temperature, detecting whether the temperature of the pot bottom is within the target temperature range;
and recording the duration of the pot bottom temperature outside the target temperature range under the condition that the pot bottom temperature is detected to be outside the target temperature range.
3. The method of claim 2, wherein adjusting the heating power of the heating load based on the bottom pan temperature comprises:
under the condition that the duration is detected to be longer than the preset duration, acquiring a temperature difference value between the pot bottom temperature and the preset temperature, wherein different temperature difference values correspond to different heating powers;
determining a heating duty ratio according to the temperature difference;
adjusting the heating power of the heating load according to the heating duty ratio.
4. The method of claim 3, wherein determining a heating duty cycle from the temperature difference comprises:
acquiring the current heating duty ratio of the heating load;
under the condition that the temperature of the pot bottom is higher than the preset temperature, reducing the current heating duty ratio according to the temperature difference value to obtain the heating duty ratio;
and under the condition that the temperature of the pot bottom is not greater than the preset temperature, increasing the current heating duty ratio according to the temperature difference value to obtain the heating duty ratio.
5. An apparatus for controlling temperature, applied to a cooking appliance, comprising:
the acquisition module is used for controlling the cooking appliance to perform heating work and acquiring the pot bottom temperature of the cooking appliance;
the detection module is used for detecting the duration of the pot bottom temperature outside the target temperature range;
and the control module is used for adjusting the heating power of a heating load according to the pot bottom temperature under the condition that the duration is longer than the preset duration so as to enable the pot bottom temperature to be within the target temperature range.
6. A cooking appliance, comprising:
the temperature collector is used for controlling the cooking appliance to heat and collecting the pot bottom temperature of the cooking appliance;
and the controller is used for detecting the duration that the temperature of the pan bottom is out of the target temperature range, and regulating the heating power of a heating load according to the temperature of the pan bottom under the condition that the duration is longer than the preset duration so as to enable the temperature of the pan bottom to be in the target temperature range.
7. The cooking appliance of claim 6, further comprising: and the thermistor is contacted with the pot bottom of the cooking utensil and is connected with the temperature collector, wherein the temperature collector is used for collecting the temperature of the pot bottom by detecting the resistance value of the thermistor.
8. The cooking appliance according to claim 7, wherein the temperature collector is connected to a first end of a first resistor, a second end of the first resistor is connected to a first end of the thermistor and a first end of a second resistor, a second end of the second resistor is connected to ground, the first end of the first resistor is connected to ground through a capacitor, and the second end of the thermistor is connected to a power supply.
9. The cooking appliance of claim 6, wherein the cooking appliance is an electric pressure cooker.
10. A storage medium, characterized in that the storage medium comprises a stored program, wherein when the program is run, a device in which the storage medium is located is controlled to execute the method for controlling temperature according to any one of claims 1 to 5.
11. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the method of controlling temperature according to any one of claims 1 to 5 when running.
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