CN103783998A - Electric rice cooker and heating control method thereof - Google Patents

Electric rice cooker and heating control method thereof Download PDF

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Publication number
CN103783998A
CN103783998A CN201210435997.4A CN201210435997A CN103783998A CN 103783998 A CN103783998 A CN 103783998A CN 201210435997 A CN201210435997 A CN 201210435997A CN 103783998 A CN103783998 A CN 103783998A
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China
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heating
pot body
heater
electric cooker
heating power
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CN201210435997.4A
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Chinese (zh)
Inventor
何毅东
黄兵
房振
王强
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Midea Group Co Ltd
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Midea Group Co Ltd
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Priority to CN201210435997.4A priority Critical patent/CN103783998A/en
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Abstract

The invention discloses a heating control method of an electric rice cooker. The electric rice cooker comprises a cooker body and a cover. The cover is provided with an internal steam passage and a negative pressure generator disposed in the steam passage. A heater is disposed in the cooker body. The heating control method includes the steps of a, heating, namely controlling the heater to heat with a first heating power P1, and stopping the negative pressure generator until a steam temperature Tt of the cover is not smaller than a first preset temperature T1; b, boiling, namely controlling the heater to heat with a second heating power P2, running the negative pressure generator until a cooker bottom temperature Tb of the bottom of the cooker body is not smaller than a second preset temperature T2. T2 is larger than T1. The heating control method has the advantages that cooking speed can be increased and bubble overflow prevention can be improved for the electric rice cooker. The invention further discloses the electric rice cooker.

Description

Electric cooker and method for heating and controlling thereof
Technical field
The present invention relates to the method for heating and controlling of a kind of electric cooker and this electric cooker, relate in particular to a kind of the have electric cooker of foam Anti-spill and the method for heating and controlling for the anti-overflow electric cooker of foam.
Background technology
In cooking process for foam is anti-overflow, in prior art, there are several schemes, the firstth, realize anti-overflowly by hardware, for example strengthen steam operation passage, strengthen steam film-cooled heat, add the surface tension of macrofoam in motion process, increase barrier that foam rises and realize and suppress foam overflow by steam valve, overflow-prevention cover plate.But it is static anti-overflow that this mode belongs to, after hardware is determined, anti-overflow performance is also just fixing, very flexible; Second be realize by software anti-overflow, although flexibility is good, but need to reduce the service time of heater or reduce heating power, there is the shortcoming of unstability and hysteresis quality, and owing to need to reducing the service time of heater or reducing heating power, cause cooking time long, can not reach the function of fast cooking.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.
For this reason, one object of the present invention is to propose a kind of method for heating and controlling of electric cooker, and this control method can improve cooking speed, improve the anti-overflow effect of foam of electric cooker.
Another object of the present invention is to propose that a kind of cooking speed is fast, the anti-overflow effective electric cooker of foam.
According to the method for heating and controlling of the electric cooker of first aspect present invention embodiment, described electric cooker comprises pot body and pot lid, in described pot lid, be provided with in steam channel and described steam channel and be provided with depression generator, in described pot body, be provided with heater, described method for heating and controlling comprises the following steps: (a) heating period: control described heater with the first heating power P1 heating and stop described depression generator, until the vapor (steam) temperature Tt >=the first preset temperature T1 at described pot lid place; (b) boiling stage: control described heater with the second heating power P2 heating and move described depression generator, until pot body bottom temp Tb >=the second preset temperature T2 of described pot body bottom, wherein T2>T1.
According to the method for heating and controlling of the electric cooker of the embodiment of the present invention, can fully improve the heating power of heater or extend the heat time of heater with the time of shortening heating period in the heating period, improve cooking speed, and at boiling stage, can improve equally the heat time of heating power or the prolongation heater of heater, shorten the time of boiling stage, further improve cooking speed, thereby entirety shortens cooking rice over a slow fire the time of electric cooker, can effectively save energy consumption, reduce use cost.
In addition, according to the method for heating and controlling of the electric cooker of the embodiment of the present invention, can also there is following additional technical feature:
In some embodiments of the invention, described method for heating and controlling also comprises: (c) cook rice over a slow fire the stage: control described heater with the 3rd heating power P3 and predetermined default the cooking rice over a slow fire the time of cycle of operation heating, wherein P3<P2.Setting is cooked rice over a slow fire the stage, can improve culinary art effect.
In some embodiments of the invention, described method for heating and controlling also comprises: detect quantity of food in described pot body, and described the second heating power P2 is that quantity of food based in described pot body is selected from default heating power.Thus, can according to quantity of food number select the size of the second heating power, in guaranteeing the anti-overflow effect of foam, shorten cooking time as far as possible, reduce energy consumption.
In some embodiments of the invention, be that quantity of food based in described pot body is selected from the default cycle of operation in the cycle of operation of depression generator described in described boiling stage.Thus, can according to quantity of food number select cycle of operation of depression generator, in guaranteeing the anti-overflow effect of foam, shorten cooking time as far as possible, reduce energy consumption.
In some embodiments of the invention, quantity of food is to determine the time that amplitude that in time of experiencing based on described vapor (steam) temperature Tt rising predetermined temperature or unit interval, described vapor (steam) temperature Tt rises or described vapor (steam) temperature Tt rising unit temperature value experience in described pot body.
According to the method for heating and controlling of the electric cooker of the embodiment of the present invention, can improve the power of heater in the heating period, shorten the time of heating period, improve cooking efficiency, can how much regulate the operational mode of depression generator, the heating power of heater according to the quantity of food grade obtaining at boiling stage, thereby in guaranteeing foam removal effect, maximum reduction energy consumption, and shorten cooking time.
According to the electric cooker of second aspect present invention embodiment, comprising: pot body, is provided with heater in described pot body, pot lid, described pot lid is located on described pot body and in described pot lid and is provided with steam channel, is provided with the depression generator for produce local decompression region in described steam channel in described steam channel, and controller, described controller is connected with described depression generator with described heater respectively, wherein stop described depression generator and control described heater and heat with the first heating power at controller described in the heating period of described electric cooker, until the vapor (steam) temperature Tt >=the first preset temperature T1 at described pot lid place, and at the boiling stage of described electric cooker, described controller moves described depression generator and controls described heater and heat with the second heating power, until pot body bottom temp Tb >=the second preset temperature T2 of described pot body bottom, wherein T2>T1.
According to the electric cooker of the embodiment of the present invention, can improve the heat time of heating power or the prolongation heater of heater in heating period and boiling stage, thereby accelerate the cooking speed of electric cooker, shorten the cooking time of electric cooker, save electric energy, reduce use cost.
In addition, according to the electric cooker of the embodiment of the present invention, can also there is following additional technical feature:
In some embodiments of the invention, described controller is preset and is cooked rice over a slow fire the time with the 3rd heating power P3 and predetermined cycle of operation heating at heater described in the stage control of cooking rice over a slow fire of described electric cooker, wherein P3<P2.Thus, can improve the culinary art effect of electric cooker.
In some embodiments of the invention, described depression generator is fan.
In some embodiments of the invention, described controller also detects quantity of food in described pot body, and quantity of food based in described pot body is selected described the second heating power P2 from default heating power.Thus, can according to quantity of food number select the size of the second heating power, in guaranteeing the anti-overflow effect of foam, shorten the cooking time of electric cooker as far as possible, save energy consumption simultaneously, reduce use cost.
In some embodiments of the invention, described controller at described boiling stage the quantity of food based in described pot body from the default cycle of operation, select cycle of operation of described depression generator.Thus, can according to quantity of food number select cycle of operation of depression generator, in guaranteeing the anti-overflow effect of foam, shorten the cooking time of electric cooker as far as possible, save energy consumption simultaneously, reduce use cost.
In some embodiments of the invention, amplitude or the described vapor (steam) temperature Tt rising unit temperature value needed time of described controller based on described vapor (steam) temperature Tt rises in needed time of described vapor (steam) temperature Tt rising predetermined temperature or unit interval is determined quantity of food in described pot body.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the flow chart of the method for heating and controlling of electric cooker according to an embodiment of the invention;
Fig. 2 is the flow chart of the method for heating and controlling of electric cooker in accordance with another embodiment of the present invention; With
Fig. 3 is the schematic diagram of electric cooker according to an embodiment of the invention.
Description of reference numerals;
Electric cooker 100;
Pot body 1, heater 11;
Pot covers 2, steam channel 21, depression generator 22;
Controller 3.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
First describe in detail according to the method for heating and controlling of the electric cooker 100 of the embodiment of the present invention with reference to figure 1-Fig. 3 below.
As shown in Figure 3, electric cooker 100 comprises that pot body 1 and pot cover 2, pot covers in 2 and is provided with in steam channel 21 and steam channel 21 and is provided with depression generator 22, depression generator 22 is in the interior generation negative pressure of steam channel 21, for example, depression generator 22 in steam channel 21 around depression generator 22 generation negative pressure region.Here, be understandable that, term " negative pressure " refers to the pressure lower than the pressure in the foam entering in steam channel 21, and " negative pressure region " refers to that pressure in this region is lower than the pressure in the foam entering in steam channel 21, and the value of negative pressure can be 0.85-1.0 standard atmospheric pressure conventionally.In pot body 1, be provided with heater 11, for example be arranged on the bottom of pot body 1, the working method of heater 11 is generally batch (-type), within a work period, heater 11 within a period of time heating work and within remaining a period of time, stop heating, wherein the Power Regulation of heater 11 is than being the dutycycle of heater heating power, and the heat time accounts for heat time and the ratio of heat time summation not.
Shown in Fig. 1, method for heating and controlling comprises heating period (a) and boiling stage (b) according to an embodiment of the invention, the wherein heating period: control heater 11 is with the first heating power P1 heating and stop depression generator 22, until pot covers the vapor (steam) temperature Tt >=the first preset temperature T1 at 2 places.Boiling stage: control heater 11 is with the second heating power P2 heating and operation depression generator 22, until pot body bottom temp Tb >=the second preset temperature T2 of pot body 1 bottom, wherein T2>T1.
Particularly, in the heating period, heater 11 is not worked with the first heating power P1 heating and depression generator 22, wherein in this process, compared with there is no the electric cooker of depression generator in traditional steam channel, can increase by the first heating power P1 or extend heat time (being that Power Regulation is than increasing) of heater 11.More particularly, there is depression generator and just start working in the time entering boiling stage according to the electric cooker 100 of the embodiment of the present invention, thereby can avoid at the boiling stage initial stage, due to heater heating power is before excessive or Power Regulation than the too high foam overflow that occurs, and then realize the object that can improve heater heating power and extend the heat time in the heating period.
In some embodiments of the invention, preferably, P2≤P1.But the present invention is not limited to this, for example P2 also can be greater than P1.
To extend the heat time as example, the one-period of for example heater is 32 seconds, the heat time of traditional electric cooker heater under this cycle is approximately 20 seconds, Comparatively speaking, according to embodiments of the invention, heat time that can control heater be within 30 seconds, be even within 32 seconds, be whole cycle heater all in heating, rise to rapidly the first preset temperature T1 thereby assemble heat fast so that pot covers the vapor (steam) temperature Tt at 2 places, then enter boiling stage.
Enter after boiling stage at electric cooker 100, specifically, heater 11 is not preferably to exceed the second heating power P2 work of the first heating power P1, and depression generator 22 starts in this process, because depression generator 22 is at the interior generation negative pressure region of steam channel 21, therefore enter after this negative pressure region at boiling stage foam, because the pressure in foam is greater than the pressure outside foam, foam breaks after expanding rapidly under pressure differential effect, thereby prevent that foam from overflowing electric cooker with steam by steam channel 21, can greatly improve thus the second heating power P2 of boiling stage or extend the heat time.
To improve heating power as example, at boiling stage, the second heating power P2 of heater can be 1.5-2 times at the heater heating power of boiling stage of traditional electrical rice cooker, thereby assemble heat fast so that pot body bottom temp Tb of pot body bottom rises to the second preset temperature T2 fast, complete cooking process.
In brief, at heating period and boiling stage, the heating power of the heater 11 in two stages can increase or extending heating time, thereby shortens cooking time.
According to the method for heating and controlling of the embodiment of the present invention, can fully improve the heating power of heater 11 or extend the heat time of heater with the time of shortening heating period in the heating period, improve cooking speed, and at boiling stage, can improve equally the heat time of heating power or the prolongation heater of heater 11, shorten the time of boiling stage, further improve cooking speed, thereby entirety shortens cooking rice over a slow fire the time of electric cooker, can effectively save energy consumption, reduce use cost.
As shown in Figure 2, in preferred embodiments more of the present invention, method for heating and controlling also comprises the stage of cooking rice over a slow fire (c), the stage of cooking rice over a slow fire is after boiling stage, in the stage of cooking rice over a slow fire, control heater 11 is with the 3rd heating power P3 and predetermined default the cooking rice over a slow fire the time of cycle of operation heating, wherein P3<P2.Specifically, in the stage of cooking rice over a slow fire, the power work of heater when lower than boiling stage, its predetermined cycle of operation can be a predefined time cycle, and ending up being start time with boiling stage, for example predetermined cycle of operation is 5 minutes, so in 5 minutes after boiling stage finishes, heater 11 will, with the 3rd heating power P3 work, be the stage of cooking rice over a slow fire.Certainly, be understandable that, the cycle of operation of the stage heater of cooking rice over a slow fire 11 can also be step, for example, with the 3rd heating power P3 work very first time, then stopped for the second time, finally working for the 3rd time with the 3rd heating power P3, this is all that appearance is intelligible for those skilled in the art.In addition, the stage of cooking rice over a slow fire is compared boiling stage, and the heating power of heater 11 is lower, i.e. P3<P2 can suitably reduce energy consumption thus in improving culinary art effect.
Method for heating and controlling also comprises and detects pot body 1 interior quantity of food, and this process was carried out before entering boiling stage, and wherein the second heating power P2 is that quantity of food based in pot body 1 is selected from default heating power.The detection method of pot body 1 interior quantity of food can have multiple, and three kinds of different detection methods are described below, and certainly, is understandable that, the detection method of pot body 1 interior quantity of food is not limited to three kinds of following modes.
Specifically, first method for: pot body in 1 quantity of food be the time of experiencing based on vapor (steam) temperature Tt rising predetermined temperature, that is to say, the needed time of vapor (steam) temperature Tt rising uniform temperature that pot body 1 interior quantity of food can be covered 2 places according to pot is determined, be understandable that, quantity of food is larger, the time that its vapor (steam) temperature Tt rising predetermined temperature experiences is longer, quantity of food is fewer, the time that its vapor (steam) temperature Tt rising predetermined temperature experiences is shorter, can determine that quantity of food grade is the number of quantity of food according to the length of this time thus.
Second method is: in pot body, quantity of food is the amplitude rising based on vapor (steam) temperature Tt in the unit interval, for example vapor (steam) temperature Tt how many degree that risen within a certain period of time, can determine the number of quantity of food according to the size of ascensional range, in other words, quantity of food is larger, the amplitude that vapor (steam) temperature Tt rises is within a certain period of time relatively less, quantity of food is less, the amplitude that vapor (steam) temperature Tt rises is within a certain period of time relatively larger, can determine according to vapor (steam) temperature Tt ascensional range in the unit interval thus the number of quantity of food.
The third method for: in pot body, quantity of food is to determine time of experiencing based on vapor (steam) temperature Tt rising unit temperature value, the uniform temperature that for example rises is as 10 ° of needed times, can determine the number of quantity of food according to the length of this time, in other words, quantity of food is larger, this time is longer, and quantity of food is less, and this time is shorter.
Determine the quantity of food grade of pot in body be quantity of food number after, can from default heating power, select the second heating power P2, for example, in the time that quantity of food is more, can select larger heating power, in the time that quantity of food is less, can select less heating power, thereby effectively shorten cooking time, save energy consumption simultaneously.
That the quantity of food in body 1 is selected from the default cycle of operation based on pot in the cycle of operation of boiling stage depression generator 22, in other words, for the effect that guarantees that depression generator 22 defoams, save electric energy, depression generator 22 is selected the default cycle of operation according to the number of quantity of food simultaneously.Specifically, quantity of food is more, under identical heating power, the foam of its generation is also relatively more, and quantity of food is fewer, under identical heating power, the foam of its generation is also relatively fewer, therefore can select the cycle of operation that depression generator 22 is suitable according to the number of quantity of food.
Below take depression generator 22 periodic runnings as example, in the time that quantity of food is larger, can select short pattern of intermittent time to guarantee the removal effect of foam, in quantity of food hour, can select pattern that the intermittent time grows to save as much as possible energy consumption.Be understandable that, the depression generator 22 of electric cooker can have multiple discontinuous operation pattern, its difference can only be the length of intermittent time, for example its intermittent time of high-frequency work pattern can very shortly be even zero to be that depression generator 22 is worked always, its intermittent time of low frequency operation pattern can be relatively long, and between High-frequency and low-frequency mode of operation, intermediate frequency can be set, medium-high frequency, multiple patterns such as medium and low frequency are with the different intermittent time of correspondence, thus in the time of the different quantity of food of culinary art, can select suitable mode of operation, in preventing foam overflow, reduce to greatest extent the energy consumption of depression generator 22, and then the energy consumption of reduction electric cooker.
It should be noted that, above-mentioned is only schematic as an example of depression generator 22 periodic runnings example, can not be interpreted as limitation of the present invention, be understandable that, depression generator 22 can be also that the power after the adjustable and corresponding adjusting of power is worked always, for example, when quantity of food is larger, can select depression generator 22 to work with larger power always, and in the time that quantity of food is less, can select depression generator 22 to work with less power always, this is all that appearance is intelligible for those skilled in the art.
According to the method for heating and controlling of the electric cooker of the embodiment of the present invention, can improve the power of heater in the heating period, shorten the time of heating period, improve cooking efficiency, can how much regulate the operational mode of depression generator, the heating power of heater according to the quantity of food grade obtaining at boiling stage, thereby in guaranteeing foam removal effect, maximum reduction energy consumption, and shorten cooking time.
Describe in detail according to the electric cooker 100 of the embodiment of the present invention below with reference to Fig. 3.
Comprise that according to the electric cooker 100 of the embodiment of the present invention pot body 1, pot cover 2, controller 3.
Pot is provided with heater 11 in body 1 and innerly has a pot chamber for cooking food, heater 11 can be located at the bottom of pot body 1, pot cover 2 and is located on pot body 1 and stews to cover and in 2, be provided with steam channel 21, steam channel 21 has the outlet communicating with pot import of communicating of chamber with pot external body for exhaust steam, is provided with the depression generator 22 for the interior generation local decompression of steam channel 21 region in steam channel 21.Thus in the time of the cooking food of pot chamber, the foam producing enters in steam channel 21 from import, depression generator 22 work produce negative pressuren zone, pressure in this negative pressure region is less than the pressure in foam, when foam enters after negative pressure region, pressure in foam is greater than the pressure of foam outside, and foam breaks after expanding rapidly under pressure differential effect, thereby prevents that foam from overflowing electric cooker with steam by steam channel 21.
Preferably, depression generator 22 can be fan, and fan is preferably arranged on the entrance of steam channel 21, thus contiguous this entrance of the negative pressure region producing when fan work, can make thus the foam entering in steam channel 21 break as early as possible, improve the effect that prevents foam overflow electric cooker.
Controller 3 is connected with depression generator 22 with heater 11 for controlling, regulate the duty of heater 11 and depression generator 22 respectively, wherein in heating period of electric cooker 100, controller 3 stops depression generator 22 and control heater 11 heats with the first heating power P1, that is to say, controller 3 is controlled depression generator 22 and is stopped, control heater 11 heats pot body 1 bottom with the first heating power simultaneously, until pot covers the vapor (steam) temperature Tt >=the first preset temperature T1 at 2 places.
Wherein at the boiling stage of electric cooker 100, controller 3 moves depression generator 22 and control heater 11 heats with the second heating power P2, that is to say, controller 3 is controlled depression generator 22 and is worked, make it at the interior generation negative pressure region of steam channel 21, control heater 11 heats pot body 1 bottom with the second heating power simultaneously, until pot body bottom temp Tb >=the second preset temperature T2 of pot body bottom, wherein T2>T1.Preferably, in some embodiments of the invention, P2≤P1.Certainly, the present invention is not limited to this, and for example the second heating power P2 also can be greater than the first heating power P1.At heating period and boiling stage, owing to being provided with depression generator 22 in steam channel 21, therefore can improving the heating power of heater 11 or extend the heat time in these two stages, thereby shortening cooking time, the energy consumption of saving electric cooker 100.
According to the electric cooker 100 of the embodiment of the present invention, can improve the heat time of heating power or the prolongation heater 11 of heater 11 in heating period and boiling stage, thereby accelerate the cooking speed of electric cooker 100, shorten the cooking time of electric cooker 100, save electric energy, reduce use cost.
Preferably, controller 3 is cooked rice over a slow fire stage control heater 11 with the 3rd heating power P3 and predetermined default the cooking rice over a slow fire the time of cycle of operation heating, wherein P3<P2 at electric cooker 100.Specifically, in the stage of cooking rice over a slow fire, the power work of controller 3 control heaters 11 when lower than boiling stage, its predetermined cycle of operation can be a predefined time cycle, and ending up being start time with boiling stage, for example predetermined cycle of operation is 5 minutes, so in 5 minutes after boiling stage finishes, controller 3 control heaters 11 are worked with the 3rd heating power P3, are the stage of cooking rice over a slow fire.
Certainly, be understandable that, the cycle of operation of the stage heater of cooking rice over a slow fire 11 can also be step, for example controller 3 can be worked the very first time with the 3rd heating power P3 by control heater 11, then controller 3 control heaters 11 quit work for the second time, finally worked for the 3rd time with the 3rd heating power P3 at control heater 11, this is all that appearance is intelligible for those skilled in the art.In addition, the stage of cooking rice over a slow fire is compared boiling stage, and the heating power of controller 3 control heaters 11 is lower, i.e. P3<P2 can suitably reduce energy consumption thus in improving culinary art effect.
Controller 3 also can be used for detecting pot body 1 interior quantity of food, and quantity of food based in pot body 1 is selected the concrete size of the second heating power P2 from default working power.Particularly, the method for the quantity of food in controller 3 detection pot bodies 1 can have multiple, and three kinds of different detection modes are described below.Certainly, be understandable that, the method that controller 3 detects pot body 1 interior quantity of food is not limited to three kinds of following modes.
First kind of way is: controller 3 is based on the vapor (steam) temperature Tt rising needed time of predetermined temperature, that is to say, controller 3 can according to pot cover 2 places definite quantity of food of needed time of vapor (steam) temperature Tt rising uniform temperature number, be understandable that, quantity of food is more, the time that its vapor (steam) temperature Tt rising predetermined temperature experiences is longer, quantity of food is fewer, the time that its vapor (steam) temperature Tt rising predetermined temperature experiences is shorter, can determine according to the length of this time thus the size of quantity of food.
The second way is: the amplitude that controller 3 rises based on vapor (steam) temperature Tt in the unit interval, for example vapor (steam) temperature Tt how many degree that risen within a certain period of time, controller 3 can be determined according to the size of temperature rise amplitude the number of quantity of food, in other words, quantity of food is more, the amplitude that vapor (steam) temperature Tt rises is within a certain period of time relatively less, quantity of food is less, the amplitude that vapor (steam) temperature Tt rises is within a certain period of time relatively larger, and controller 3 can be determined according to vapor (steam) temperature Tt ascensional range in the unit interval number of quantity of food thus.
The third mode: controller 3 is determined quantity of food in described pot body based on the vapor (steam) temperature Tt rising unit temperature needed time of value, the uniform temperature that for example rises is as 10 ° of needed times, controller 3 can be determined according to the length of this time the number of quantity of food, in other words, quantity of food is larger, this time is longer, and quantity of food is less, and this time is shorter.
After definite quantity of food is how many, controller 3 can add the food in hot pot chamber with corresponding the second heating power P2 by control heater 11, for example, in the time that quantity of food is more, can select larger heating power, in the time that quantity of food is less, can select less heating power, thereby effectively shorten cooking time, save energy consumption simultaneously.
Preferably, controller 3 boiling stage based on pot the quantity of food in body 1 from the default cycle of operation, select cycle of operation of depression generator 22.In other words, for the effect that guarantees that depression generator 22 defoams, save electric energy simultaneously, controller 3 can according to current foodstuff amount number, control depression generator 22 with the work of suitable cycle of operation.
Specifically, quantity of food is more, under identical heating power, the foam of its generation is also relatively more, and quantity of food is fewer, under identical heating power, the foam of its generation is also relatively less, therefore can select according to the number of quantity of food the cycle of operation of depression generator 22.
Below take depression generator 22 periodic runnings as example, in the time that quantity of food is more, can select short pattern of intermittent time to guarantee the removal effect of foam, in quantity of food hour, can select pattern that the intermittent time grows to save as much as possible energy consumption.Be understandable that, the depression generator 22 of electric cooker can have multiple discontinuous operation pattern, and its difference can only be the intermittent time.
For example its intermittent time of high-frequency work pattern can very shortly be even zero to be that depression generator 22 is worked always, its intermittent time of low frequency operation pattern can be relatively long, it can arrange intermediate frequency between High-frequency and low-frequency mode of operation, medium-high frequency, multiple patterns such as medium and low frequency are with the different intermittent time of correspondence, thus in the time of the different quantity of food of culinary art, controller 3 can be controlled depression generator 22 with suitable work pattern according to the difference of quantity of food, in preventing foam overflow, reduce to greatest extent the energy consumption of depression generator 22, and then the energy consumption of reduction electric cooker.
It should be noted that, above-mentioned depression generator 22 is only schematic for the formula of having a rest operates to example, can not be interpreted as limitation of the present invention, be understandable that, depression generator 22 can be also that the power after the adjustable and corresponding adjusting of power is worked always, specifically, for example, when quantity of food is more, controller 3 can be controlled depression generator 22 and work with larger power always, and in quantity of food hour, controller 3 can be controlled depression generator 22 and work with less power always, and this is all that appearance is intelligible for those skilled in the art.
According to the electric cooker 100 of the embodiment of the present invention, can improve the power of heater 11 in the heating period, shorten the time of heating period, improve cooking efficiency, can how much regulate the operational mode of depression generator 22 and the heating power of heater 11 according to the quantity of food grade obtaining at boiling stage, thereby in guaranteeing foam removal effect, maximum reduction energy consumption, and shorten cooking time.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.

Claims (10)

1. the method for heating and controlling of an electric cooker, described electric cooker comprises pot body and pot lid, is provided with in steam channel and described steam channel and is provided with depression generator in described pot lid, in described pot body, is provided with heater, it is characterized in that, described method for heating and controlling comprises the following steps:
(a) heating period: control described heater with the first heating power P1 heating and stop described depression generator, until the vapor (steam) temperature Tt >=the first preset temperature T1 at described pot lid place; With
(b) boiling stage: control described heater with the second heating power P2 heating and move described depression generator, until pot body bottom temp Tb >=the second preset temperature T2 of described pot body bottom, wherein T2>T1.
2. method for heating and controlling according to claim 1, is characterized in that, described method for heating and controlling also comprises:
(c) cook rice over a slow fire the stage: control described heater with the 3rd heating power P3 and predetermined default the cooking rice over a slow fire the time of cycle of operation heating, wherein P3<P2.
3. method for heating and controlling according to claim 1, is characterized in that, also comprises: detect quantity of food in described pot body, and described the second heating power P2 is that quantity of food based in described pot body is selected from default heating power.
4. method for heating and controlling according to claim 3, is characterized in that, is that quantity of food based in described pot body is selected from the default cycle of operation in the cycle of operation of depression generator described in described boiling stage.
5. method for heating and controlling according to claim 3, it is characterized in that, quantity of food is to determine the time that amplitude that in time of experiencing based on described vapor (steam) temperature Tt rising predetermined temperature or unit interval, described vapor (steam) temperature Tt rises or described vapor (steam) temperature Tt rising unit temperature value experience in described pot body.
6. an electric cooker, is characterized in that, comprising:
Pot body, is provided with heater in described pot body;
Pot lid, described pot lid is located on described pot body and in described pot lid and is provided with steam channel, is provided with the depression generator for produce local decompression region in described steam channel in described steam channel; With
Controller, described controller is connected with described depression generator with described heater respectively, wherein stop described depression generator and control described heater and heat with the first heating power at controller described in the heating period of described electric cooker, until the vapor (steam) temperature Tt >=the first preset temperature T1 at described pot lid place, and at the boiling stage of described electric cooker, described controller moves described depression generator and controls described heater and heat with the second heating power, until pot body bottom temp Tb >=the second preset temperature T2 of described pot body bottom, wherein T2>T1.
7. electric cooker according to claim 6, is characterized in that, described controller is preset and cooked rice over a slow fire the time with the 3rd heating power P3 and predetermined cycle of operation heating at heater described in the stage control of cooking rice over a slow fire of described electric cooker, wherein P3<P2.
8. electric cooker according to claim 6, is characterized in that, described depression generator is fan.
9. electric cooker according to claim 6, is characterized in that, described controller also detects quantity of food in described pot body, and quantity of food based in described pot body is selected described the second heating power P2 from default heating power.
10. electric cooker according to claim 6, is characterized in that, described controller at described boiling stage the quantity of food based in described pot body from the default cycle of operation, select cycle of operation of described depression generator.
CN201210435997.4A 2012-11-02 2012-11-02 Electric rice cooker and heating control method thereof Pending CN103783998A (en)

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CN105078233A (en) * 2014-05-20 2015-11-25 佛山市顺德区美的电热电器制造有限公司 Electric cooker and control method thereof
CN105455663A (en) * 2015-11-17 2016-04-06 珠海格力电器股份有限公司 Heating control method and device, electric pressure cooker and electric cooker
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CN102342737A (en) * 2011-08-31 2012-02-08 佛山市顺德区美的电热电器制造有限公司 Cooking control method of electric rice cooker
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