CN109106195B - Cooking appliance and control method thereof - Google Patents

Cooking appliance and control method thereof Download PDF

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Publication number
CN109106195B
CN109106195B CN201811103100.1A CN201811103100A CN109106195B CN 109106195 B CN109106195 B CN 109106195B CN 201811103100 A CN201811103100 A CN 201811103100A CN 109106195 B CN109106195 B CN 109106195B
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temperature
cooking appliance
cooking
initial
value
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CN109106195A (en
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张力文
孔进喜
陈海鹏
梅江
王江南
文雅
张伶俐
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Cookers (AREA)

Abstract

The invention discloses a cooking utensil and a control method thereof, wherein the cooking utensil comprises a plurality of temperature sensing elements which are respectively used for detecting the internal temperatures of different height positions of the cooking utensil, and the control method comprises the following steps: before the cooking utensil starts heating, a detection stage lasting for a first preset time is firstly executed, and in the detection stage, the initial temperature state of the cooking utensil is judged according to the internal temperature detected by the temperature-sensing elements and the variation of the internal temperature of the cooking utensil in a third preset time. The cooking appliance and the control method thereof provided by the invention can accurately judge the initial working state of the cooking appliance, so as to ensure the quality of food made by the cooking appliance under different initial conditions and improve the stability and consistency of the cooking effect.

Description

Cooking appliance and control method thereof
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to a cooking appliance and a control method thereof.
Background
With the improvement of living standard, consumers put new demands on the product applicability. When the rice cooker is used, the initial working state of the rice cooker is diversified due to different environmental conditions and different use habits, such as: hot water cooking, power off cooking, continuous cooking, normal cooking, etc. In order to ensure the cooking quality under various working conditions, the initial working state of the rice cooker needs to be accurately judged, and corresponding control logic is selected according to the judgment result.
Disclosure of Invention
In view of the above, an objective of the present invention is to provide a cooking apparatus capable of accurately determining an initial working state and a control method thereof, so as to ensure the quality of food made by the cooking apparatus under different initial conditions and improve the stability and consistency of cooking effect.
In order to achieve the above purpose, on one hand, the invention adopts the following technical scheme:
a control method of a cooking appliance including a plurality of temperature sensing elements for detecting internal temperatures of the cooking appliance at different height positions, respectively, the control method comprising:
before the cooking utensil starts heating, a detection stage lasting for a first preset time is firstly executed, and in the detection stage, the initial temperature state of the cooking utensil is judged according to the internal temperature detected by the temperature-sensing elements and the variation of the internal temperature of the cooking utensil in a third preset time.
Preferably, the method for determining the initial temperature state of the cooking appliance according to the internal temperature detected by the plurality of temperature sensing elements and the variation of the internal temperature of the cooking appliance in a third predetermined time period comprises the following steps:
judging the initial temperature state of the contents in the cooking appliance according to the variation of the internal temperature of the cooking appliance in a third preset time period; and/or the presence of a gas in the gas,
and judging the initial temperature state of the pot body of the cooking utensil according to the internal temperature detected by the temperature sensing elements.
Preferably, the plurality of temperature sensing elements includes an upper temperature sensing element for detecting an upper temperature of the cooking utensil and a lower temperature sensing element for detecting a lower temperature of the cooking utensil, and the internal temperature includes a temperature detected by the upper temperature sensing element and a temperature detected by the lower temperature sensing element.
Preferably, the control method for determining the initial temperature state of the pot of the cooking appliance according to the internal temperature detected by the plurality of temperature sensing elements comprises:
acquiring an upper temperature value T detected by the upper temperature-sensing element at any time in the detection stageTAnd a lower temperature value T detected by the lower temperature sensing elementBAccording to said upper temperature value TTAnd a lower temperature value TBThe initial temperature state of the pot body of the cooking appliance is judged according to the temperature difference.
Preferably, according to said upper temperature value TTAnd a lower temperature value TBThe method for judging the initial temperature state of the pot body of the cooking appliance comprises the following steps:
calculating the temperature difference TB-TT；
And if the temperature difference is smaller than a third temperature difference threshold value, judging that the initial temperature state of the pot body is a hot pot, and if the temperature difference is larger than or equal to the third temperature difference threshold value, judging that the initial temperature state of the pot body is a cold pot.
Preferably, the variation is a difference between an internal temperature of the cooking appliance at an initial time of entering the detection stage and an internal temperature after the third predetermined time period; and/or the presence of a gas in the gas,
the any time comprises an initial time when the cooking appliance enters the detection stage.
Preferably, the method of judging the initial temperature state of the contents in the cooking appliance according to the amount of change of the internal temperature of the cooking appliance for a third predetermined time period includes:
and if the variation is smaller than a second variation threshold, determining that the initial temperature state of the contents is cold liquid, and if the variation is larger than or equal to the second variation threshold, determining that the initial temperature state of the contents is hot liquid.
Preferably, the third temperature difference threshold includes a fifth value and a sixth value, and the control method includes the steps of:
s201, judging whether the variation is smaller than a second variation threshold, if so, performing S202, and if not, performing S203;
s202, judging whether the temperature difference is smaller than the fifth value or not, if so, judging that the initial temperature state of the cooking appliance is a hot pot cold liquid state, and if not, judging that the initial temperature state of the cooking appliance is a cold pot cold liquid state;
and S203, judging whether the temperature difference is smaller than the sixth value, if so, judging that the initial temperature state of the cooking appliance is a hot pot hot liquid state, and if not, judging that the initial temperature state of the cooking appliance is a cold pot hot liquid state.
Preferably, the second variation threshold is-10 to 10 ℃; and/or the presence of a gas in the gas,
the fifth value is-10 to 0 ℃; and/or the presence of a gas in the gas,
the sixth value is 0-10 ℃.
On the other hand, the invention adopts the following technical scheme:
a cooking appliance is controlled by the control method.
Preferably, the cooking appliance comprises an electric cooker.
The application provides a cooking utensil and control method thereof can accurately judge the initial working state of the cooking utensil to select corresponding control logic according to the judgment result, so as to ensure the quality of food made by the cooking utensil under different initial conditions, and improve the stability and consistency of the cooking effect.
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The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 shows a flow chart of an embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but the present invention is not limited to only these examples. Well-known methods, procedures, and components have not been described in detail so as not to obscure the present invention.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
When cooking is performed using a cooking appliance, the initial operating state of the cooking appliance may be diversified due to differences in environmental conditions and usage habits, such as: hot water cooking, power off cooking, continuous cooking, normal cooking, etc. Specifically, compared with normal cooking, hot water cooking is characterized in that the initial temperature of the pot body of the cooking appliance is similar to the ambient temperature, but the initial temperature of the contents is obviously higher than the ambient temperature (for example, hot water is added for cooking), and at this time, the initial temperature state of the cooking appliance is a cold pot hot liquid. Compared with normal cooking, the power-off cooking is characterized in that the cooking is restarted (such as cancellation, power-off and the like) after being interrupted, the initial temperature of the pot body and the contents of the cooking appliance is obviously higher than the ambient temperature, and the initial temperature state of the cooking appliance is hot pot liquid. Compared with normal cooking, the continuous cooking is characterized in that before the current cooking is carried out, the cooking appliance finishes at least one cooking at a short interval, the initial temperature of the pot body of the cooking appliance is obviously higher than the ambient temperature, the initial temperature of the contents is close to the ambient temperature, and the initial temperature state of the cooking appliance is hot pot cold liquid. During normal cooking, the initial temperature of the pot body and the contents of the cooking appliance is close to the ambient temperature, and the initial temperature state of the cooking appliance is cold liquid in a cold pot. Therefore, in order to ensure the cooking quality under various working conditions, the initial temperature state of the cooking appliance needs to be accurately judged, so that the initial working state of the cooking appliance is judged, and a corresponding control logic is selected according to the judgment result.
In view of the above, the present application provides a method for controlling a cooking appliance, which is used for determining an initial temperature state of the cooking appliance before cooking starts, wherein the cooking appliance comprises a plurality of temperature sensing elements, each of which is used for detecting an internal temperature of the cooking appliance at a different height position, preferably, the plurality of temperature sensing elements comprise an upper temperature sensing element for detecting an upper temperature of the cooking appliance and a lower temperature sensing element for detecting a lower temperature of the cooking appliance, for example, the upper temperature sensing element can be arranged on an appliance cover of the cooking appliance, and the lower temperature sensing element can be arranged on a bottom of the cooking appliance. The internal temperature includes a temperature detected by the upper temperature sensing element and a temperature detected by the lower temperature sensing element. Of course, it can be understood that the temperature sensing element can also be arranged at the middle position of the cooking utensil for detecting the middle temperature of the cooking utensil.
Further, the control method includes: before the heating of the cooking utensil is started, a detection stage lasting for a first preset time is firstly carried out, preferably 0 < the first preset time is less than or equal to 120s, such as 60s, and in the detection stage, the initial temperature state of the cooking utensil is judged according to the internal temperature detected by the plurality of temperature-sensing elements and the change of the internal temperature of the cooking utensil in a third preset time. Wherein the third preset time length is more than 0 and less than or equal to 120s, and the third preset time length is less than or equal to the first preset time length, or other set values can be selected according to experience.
Specifically, the initial temperature state of the contents in the cooking appliance is judged according to the variation of the internal temperature of the cooking appliance in a third preset time period; and/or judging the initial temperature state of the pot body of the cooking utensil according to the internal temperature detected by the temperature sensing elements.
The control method for judging the initial temperature state of the pot body of the cooking utensil according to the internal temperature detected by the temperature sensing elements comprises the following steps: acquiring an upper temperature value T detected by the upper temperature-sensing element at any time in the detection stageTAnd a lower temperature value T detected by the lower temperature sensing elementB(ii) a Calculating said temperature difference Δ T ═ TB-TT(ii) a And if the temperature difference delta T is smaller than a third temperature difference threshold value, determining that the initial temperature state of the pot body is a hot pot, and if the temperature difference delta T is larger than or equal to the third temperature difference threshold value, determining that the initial temperature state of the pot body is a cold pot.
Wherein the variation is a difference between an internal temperature of the cooking appliance at an initial time of entering the detection stage and an internal temperature after the third predetermined period of time has elapsed, and the any time includes the initial time of entering the detection stage. The variation comprises the difference Delta T between the upper temperature of the cooking utensil at the initial moment of entering the detection phase and the temperature after the third preset time periodTAnd the difference Delta T between the temperature of the lower part of the cooking utensil at the initial moment of entering the detection stage and the temperature after the third preset time periodBSpecifically, the upper temperature value T at the initial time is first obtainedT1And a lower temperature value TB1After a third predetermined period of time, obtaining the upper temperature value T at that timeT2And a lower temperature value TB2Calculate △ TT＝TT2-TT1,△TB＝TB2-TB1。
Specifically, the step of judging the initial temperature state of the contents in the cooking appliance according to the variation of the internal temperature of the cooking appliance in the third preset time period comprises the step of judging whether the variation is smaller than a second variation threshold △ T or not1Then, the initial temperature state of the contents is judged to be cold liquid, and if the variation is greater than or equal to a second variation threshold △ T1Then the initial temperature state of the contents is determined to be hot liquid.
Further, the third temperature difference threshold comprises a fifth value of △ T2And a sixth value of △ T3The control method comprises the following steps:
s201, judging whether the variation is smaller than a second variation threshold △ T1If yes, proceed to S202, otherwise proceed to S203, where the variation may be Δ TTOr Δ TBAt the momentIn alternative embodiments, Δ T may also be determined simultaneouslyTWhether or not it is less than the fourth variation threshold △ T4And Δ TBWhether or not it is less than the fifth variation threshold △ T5If one or both of the conditions are satisfied, then S202 is performed, otherwise S203 is performed, wherein △ T is performed4Preferably from-10 ℃ to 10 ℃ and. DELTA.TBPreferably from-10 ℃ to 10 ℃;
s202, judging whether the temperature difference delta T is smaller than the fifth value △ T2If so, judging that the initial temperature state of the cooking appliance is a hot pot cold liquid state, otherwise, judging that the initial temperature state of the cooking appliance is a cold pot cold liquid state;
s203, judging whether the temperature difference delta T is smaller than the sixth value △ T3If so, determining that the initial temperature state of the cooking appliance is a hot pot hot liquid state, otherwise, determining that the initial temperature state of the cooking appliance is a cold pot hot liquid state.
Preferably, the second variation threshold △ T1Is-10 to 10 ℃, and the fifth value is △ T2Is-10 to 0 ℃ and the sixth value is △ T3Is 0 to 10 ℃.
A specific control process is given below, and as shown in fig. 1, the control method includes the following steps:
s001, starting the cooking utensil to enter an initial detection stage;
s002, obtaining upper temperature value T at initial timeT1And a lower temperature value TB1；
S003, stopping heating ts;
s004, acquiring an upper temperature value T after a third preset time periodT2And a lower temperature value TB2And calculating the temperature difference △ T ═ TB-TTAmount of change △ TT＝TT2-TT1,△TB＝TB2-TB1。
S005, judging variation △ TTWhether or not less than the second variation threshold △ T1If yes, performing S006, otherwise performing S007;
s006, judging whether the temperature difference △ T is less thanFifth value △ T2If yes, performing S008, otherwise performing S009;
s007, judging whether the temperature difference △ T is less than a sixth value △ T3If yes, performing S0010, otherwise performing S011;
s008, judging that the initial temperature state of the cooking appliance is a hot pot cold liquid state, and entering a hot pot cold liquid path to start heating;
s009, judging that the initial temperature state of the cooking appliance is a cold liquid state of a cold pot, and entering a cold liquid path of the cold pot to start heating;
s010, judging that the initial temperature state of the cooking appliance is a hot pot hydrothermal solution state, and entering a hot pot hydrothermal solution path to start heating;
and S011, judging that the initial temperature state of the cooking appliance is a cold pot hot liquid state, and entering a cold pot hot liquid path to start heating.
The application also provides a cooking appliance which is controlled by adopting the control method. The cooking appliance may be, for example, an electric cooker, a steamer, an electric pressure cooker, or the like that can perform a cooking function by heating.
Those skilled in the art will readily appreciate that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.

Claims (5)

1. A method for controlling a cooking appliance, the cooking appliance including a plurality of temperature sensing elements for detecting internal temperatures of different height positions of the cooking appliance, respectively, the plurality of temperature sensing elements including an upper temperature sensing element for detecting an upper temperature of the cooking appliance and a lower temperature sensing element for detecting a lower temperature of the cooking appliance, the method comprising:
before the cooking utensil starts heating, firstly executing a detection stage lasting for a first preset time, and in the detection stage, acquiring an upper temperature value T detected by the upper temperature-sensing element at any time in the detection stageTAnd a lower temperature value T detected by the lower temperature sensing elementBCalculating temperature difference = TB-TTIf the temperature difference is smaller than a third temperature difference threshold value, the initial temperature state of the pot body is judged to be a hot pot, if the temperature difference is larger than or equal to the third temperature difference threshold value, the initial temperature state of the pot body is judged to be a cold pot, and the third temperature difference threshold value comprises a fifth value and a sixth value;
the control method comprises the following steps:
s201, judging whether the variation of the internal temperature of the cooking appliance in a third preset time is smaller than a second variation threshold, if so, performing S202, and if not, performing S203;
s202, judging whether the temperature difference is smaller than the fifth value or not, if so, judging that the initial temperature state of the cooking appliance is a hot pot cold liquid state, and if not, judging that the initial temperature state of the cooking appliance is a cold pot cold liquid state;
s203, judging whether the temperature difference is smaller than the sixth value, if so, judging that the initial temperature state of the cooking appliance is a hot pot hot liquid state, and if not, judging that the initial temperature state of the cooking appliance is a cold pot hot liquid state;
wherein the internal temperature includes a temperature detected by the upper temperature-sensitive element and a temperature detected by the lower temperature-sensitive element.
2. The control method according to claim 1, wherein the variation amount is a difference between an internal temperature of the cooking appliance at an initial timing of entering the detection stage and an internal temperature after the third predetermined period of time has elapsed; and/or the presence of a gas in the gas,
the any time comprises an initial time when the cooking appliance enters the detection stage.
3. The control method according to claim 1, wherein the second variation threshold is-10 to 10 ℃; and/or the presence of a gas in the gas,
the fifth value is-10 to 0 ℃; and/or the presence of a gas in the gas,
the sixth value is 0-10 ℃.
4. A cooking appliance characterized by being controlled by the control method as claimed in one of claims 1 to 3.
5. The cooking appliance of claim 4, wherein the cooking appliance comprises an electric rice cooker.
CN201811103100.1A 2018-09-20 2018-09-20 Cooking appliance and control method thereof Active CN109106195B (en)

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Publication number Priority date Publication date Assignee Title
CN110209071A (en) * 2019-05-18 2019-09-06 珠海格力电器股份有限公司 The control system and its method and cooking appliance of a kind of cooking appliance
CN112656196B (en) * 2019-10-16 2022-05-27 佛山市顺德区美的电热电器制造有限公司 Control method of cooking appliance, cooking appliance and storage medium
CN113647830B (en) * 2021-08-16 2022-08-12 珠海格力电器股份有限公司 Cooking equipment and heating control method and equipment after power failure recovery

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CN105266566A (en) * 2015-11-23 2016-01-27 珠海格力电器股份有限公司 Cooker, and control method and control apparatus thereof
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