CN103783997A - Electric rice cooker and control method thereof - Google Patents
Electric rice cooker and control method thereof Download PDFInfo
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- CN103783997A CN103783997A CN201210435201.5A CN201210435201A CN103783997A CN 103783997 A CN103783997 A CN 103783997A CN 201210435201 A CN201210435201 A CN 201210435201A CN 103783997 A CN103783997 A CN 103783997A
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Abstract
The invention discloses a 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. The cooker is provided with a heater inside. The control method includes the steps of a, detecting a running state of the negative pressure generator; b, if the negative pressure generator is in the normal running state, controlling the heater to heat in a first heating mode; if the negative pressure generator is in the abnormal running state, controlling the heater to heat in a second heating mode. Heating power of the heater in the second heating mode is smaller than that of the heater in the first mode. Through the use of the control method, the bubble overflow prevention function of the electric rice cooker can be improved. The invention further discloses the electric rice cooker.
Description
Technical field
The present invention relates to the control method of a kind of electric cooker and this electric cooker, relate in particular to and a kind ofly there is the electric cooker of foam Anti-spill and for preventing the control method of electric cooker of foam overflow.
Background technology
In order to prevent the foam overflow in electric cooker, in the steam channel of traditional electrical rice cooker in pot lid, depression generator is set, bleed fast by this depression generator, near this depression generator, produce localized low-pressure zone, pressure in this localized low-pressure zone is the pressure in body lower than pot, thereby can in process is cooked and cooked congee to electric cooker, prevent soup foam overflow.But the foam Anti-spill of traditional electrical rice cooker still haves much room for improvement.
Summary of the invention
The application is the understanding to the following fact and problem and discovery based on inventor: in the time that depression generator breaks down or move undesired (abnormality), heating control procedure electric cooker still can normally move (normal condition) during with depression generator and parameter control electric cooker, thereby cause foam overflow can occur, reduced the reliability that prevents foam overflow of electric cooker.In other words, regardless of the running status of depression generator, the heating control procedure of electric cooker is identical with parameter, thereby causes breaking down or moving when undesired at depression generator, produces foam overflow phenomenon.
For this reason, one object of the present invention is to propose a kind of control method of electric cooker, and this control method can be improved the foam Anti-spill of electric cooker.
Another object of the present invention is to propose a kind of electric cooker with improved foam Anti-spill.
According to the control method 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 control method comprises the following steps: the running status that (a) detects described depression generator; (b) if described depression generator in normal operating condition, controlling described heater heats with the first heating mode, if described depression generator is in abnormal operating condition, control described heater and heat with the second heating mode, wherein under described the second heating mode, the heating power of described heater is less than the heating power of described heater under described first mode.
According to the control method of the electric cooker of the embodiment of the present invention, before heater starts heating, first detect the duty of depression generator, in the time that depression generator is working properly, heater is cooked food with powerful the first heating mode, improves cooking speed; In the time detecting that depression generator is abnormal, heater heats food with low power the second heating mode, thereby avoid because depression generator is abnormal, still cause foam too much to overflow electric cooker with high-power heating, greatly improve the anti-spilled effect of foam of electric cooker.
In other words, at depression generator during in normal condition, heater is with first mode heating work, can effectively shorten cooking time, improve cooking efficiency, and at depression generator during in abnormality, heater is with the second pattern heating work, in guaranteeing cooking efficiency, prevent as far as possible foam overflow, improve the anti-overflow effect of foam of depression generator electric cooker in the time of abnormality.
In addition, according to the control method 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, stop described depression generator during in abnormal operating condition at described depression generator.
In some embodiments of the invention, described the first heating mode comprises that (b1) controls described heater and heat with the first heating power P1, until the vapor (steam) temperature Tt >=the first preset temperature T1 at described pot lid place; (b2) control described heater and heat with the second heating power P2, until pot body bottom temp Tb >=the second preset temperature T2 of described pot body bottom stops described heater and described depression generator, wherein T2>T1; Described the second heating mode comprises: (b3) control described heater and heat with the 3rd heating power P3, until the vapor (steam) temperature Tt >=three preset temperature T3 at described pot lid place; (b4) controlling described heater heats with the 4th heating power P4, until pot body bottom temp Tb >=four preset temperature T4 of described pot body bottom, stop described heater and described depression generator, wherein P3 < P1 and T4 > T3.
In some embodiments of the invention, described control method also comprises: detect quantity of food in described pot body, and described the second heating power P2 and described the 4th heating power P4 are that quantity of food based in described pot body is selected from default heating power.
In some embodiments of the invention, in step (b), the cycle of operation operation of described depression generator to be scheduled to, the described predetermined cycle of operation is that the quantity of food based in described pot body is selected from the default cycle of operation.
In some embodiments of the invention, described step (a) is carried out with predetermined time interval.
In some embodiments of the invention, described depression generator is fan, when the rotating speed of described fan within the scope of the first pre-set velocity or the revolution of described fan in Preset Time in the first default range of revolution time described in fan in normal operating condition, when the rotating speed of described fan within the scope of the second pre-set velocity or the revolution of described fan in Preset Time in the second default range of revolution time described in fan in abnormal operating condition.
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 localized low-pressure zone in described steam channel in described steam channel; Operation inductor, described operation inductor is located at the running status for detection of described depression generator in described pot lid; And controller, described controller is connected to control at described depression generator that described heater heats with the first heating mode during in normal operating condition with described heater, described operation inductor respectively and controls described heater at described depression generator during in abnormal operating condition and heat with the second heating mode with described depression generator, wherein under described the second heating mode, the heating power of described heater is less than the heating power of described heater under described first mode.
According to the electric cooker of the embodiment of the present invention, at depression generator during in normal condition, controller can control heater with the first heating mode work of relatively high power, thereby shortening cooking time, improves cooking efficiency, and in the time of depression generator abnormality, controller control heater is with the second pattern heating work of smaller power, guaranteeing in cooking efficiency, to prevent as far as possible foam overflow, improve the foam anti-overflow effect of depression generator when abnormal.
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, in described pot lid, be provided with the top vapor (steam) temperature sensor for detection of the vapor (steam) temperature at described pot lid place, in described pot body, be provided with the bottom temp sensor for detection of pot body bottom temp of described pot body bottom.
In some embodiments of the invention, under described the first heating mode, described in described controller control, heater heats until the vapor (steam) temperature Tt >=the first preset temperature T1 that described top vapor (steam) temperature sensor detects with the first heating power P1, and described in described controller control, heater heats with the second heating power P2, until pot body bottom temp Tb >=the second preset temperature T2 that described bottom temp sensor detects, stop described heater and described depression generator, wherein T2>T1.
In some embodiments of the invention, under described the second heating mode, described in described controller control, heater heats with the 3rd heating power P3, until the vapor (steam) temperature Tt >=three preset temperature T3 detecting at described pot lid place, and described in described controller control, heater heats with the 4th heating power P4, until pot body bottom temp Tb >=four preset temperature T4 arriving in described pot body floor detection, stop described heater and described depression generator, wherein P3<P1 and T4>T3.
In some embodiments of the invention, described controller is also for detection of the quantity of food in described pot body, described the second heating power and described the 4th heating power are to select from default heating power based on described quantity of food, the cycle of operation operation of described depression generator to be scheduled to, the described predetermined cycle of operation is that the quantity of food based in described pot body is selected from the default cycle of operation.
In some embodiments of the invention, described depression generator is fan, and described controller judges the running status of described depression generator according to the rotating speed of described fan or revolution in the given time.
In some embodiments of the invention, described operation inductor is integrated on described depression generator.
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 control method of electric cooker according to an embodiment of the invention;
Fig. 2 is the flow chart of the control method 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 control method 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.
With reference to Fig. 1, control method comprises the following steps according to an embodiment of the invention: the running status that (a) detects depression generator 22; (b) if depression generator 22 in normal operating condition, control heater 11 heats with the first heating mode, if depression generator 22 is in abnormal operating condition, control heater 11 heats with the second heating mode, and wherein under the second heating mode, the heating power of heater 11 is less than the heating power of heater 11 under first mode.
Specifically, in the time cooking, first detect the running status of depression generator 22, if depression generator 22 is in normal condition, heater 11 heats with the first heating mode, and the first heating mode can be understood as normal heating pattern, if the depression generator 22 detecting is in the time of abnormality, heater 11 heats with the second heating mode, and wherein, under the second heating mode, the heating power of heater 11 is less than the heating power under normal mode.Thus, during in abnormality, by reducing the heating power of heater 11, can correspondingly reduce the generation of foam at depression generator 22, thereby effectively avoid foam overflow, improve the anti-spilled effect of foam at depression generator 22 electric cooker under abnormality.
According to the control method of the embodiment of the present invention, before culinary art, first detect the duty of depression generator 22,, can powerful the first heating mode be cooked by food during in normal condition at depression generator 22, improve cooking speed; In the time detecting depression generator 22 in abnormality, can low power the second heating mode be cooked by food, thereby avoid because depression generator 22 is in abnormality, still cause foam too much to overflow electric cooker with high-power heating, greatly improve the anti-spilled effect of foam of depression generator 22 electric cooker in the time of abnormality.
In some embodiments of the invention, step (a) is carried out with predetermined time interval, for example, detect the running status of depression generator 22 and carry out at interval at regular intervals.Particularly, in the whole process of culinary art, after certain hour, for example, every 2 minutes, the running status of depression generator 22 can be detected once, is abnormality once the state that depression generator 22 detected, and heater 11 will be with the second heating mode heating.
More specifically, in the time detecting for the first time, if depression generator 22 is in normal condition, heater 11 heats with the first heating mode, while detection for the second time after certain hour, if depression generator 22 is in abnormality, heater 11 heats the power that reduces heater 11 with the second heating mode.Be understandable that, the time interval of twice detection can be a predefined concrete numerical value, for example, within every 1 minute or every 2 minutes, can detect once.
Thus, by being arranged to, detecting pattern carries out every predetermined time interval, can avoid in cooking process, depression generator 22 damages and still the first heating mode heating corresponding to the normal operating condition of one-time detection in the past of heater 11, thereby has further improved depression generator 22 anti-spilled effect of the foam of electric cooker under abnormality.
Preferably, during in abnormal operating condition, can stop depression generator 22 at depression generator 22.In other words,, can directly control depression generator 22 and quit work during in abnormal operating condition at depression generator 22.Depression generator 22 can be fan, below simple description judge the two kind modes of fan in abnormality.
The first judgment mode: in the time that the rotating speed of fan is within the scope of the first pre-set velocity, judge that fan is in normal operating condition.The first pre-set velocity scope can be a scope upper and lower in the rated speed of fan, in the time detecting that the current running speed of fan is within the scope of the first pre-set velocity, can judge that fan is in normal condition.In the time that the rotating speed of fan is within the scope of the second pre-set velocity, judge that fan is in abnormality, wherein the second pre-set velocity scope can be to remove the extraneous range of speeds of the first pre-set velocity, in the time detecting that the current running speed of fan is within the scope of the second pre-set velocity, can judge that fan is in abnormality.
For example, the rated speed of fan can be 500r/ minute, the first pre-set velocity scope can be 500r/ minute ± 50r/ minute, the second pre-set velocity scope can be greater than 550r/ minute or be less than 450r/ minute, detect that as worked as the rotating speed of fan is 430r/ minute, can judge that fan is in abnormality, when detecting that the rotating speed of fan is 480r/ minute, can judge that fan is in normal condition.Here, it should be noted that, above-mentioned numerical value is only exemplary, is only in order to understand better the present invention.
The second judgment mode: the revolution of fan in Preset Time judges that fan is in normal operating condition in the time that first presets in range of revolution, the revolution of fan in Preset Time judges that fan is in abnormal operating condition in the time that second presets in range of revolution.For example, take the scheduled time as 1 minute as example, the rated revolution of fan in 1 minute can be 500, the first default range of revolution can be arranged to 450-550 so, and the second default range of revolution can be to be greater than 550 or be less than 450, like this in 1 minute, in the time detecting that the revolution of fan is 430, can judge that fan is in abnormality, in the time detecting that the revolution of fan is 480, can judge that fan is in normal condition.
As shown in Figure 2, in preferred embodiments more of the present invention, the first heating mode comprises step (b1) and step (b2), and wherein step (b1) control heater 11 heats with the first heating power P1, until pot covers the vapor (steam) temperature Tt >=the first preset temperature T1 at 2 places; With step (b2) control heater 11 heats with the second heating power P2, until pot body bottom temp Tb >=the second preset temperature T2 of pot body 1 bottom stops heater 11 and depression generator 22, wherein T2>T1.Preferably, P2≤P1.Certainly, the present invention is not limited to this, and in other embodiment of the present invention, P2 also can be greater than P1.
Particularly, step (b1) and step (b2) are the duty of depression generator 22 electric cooker in the time of normal condition, now electric cooker can roughly be divided into heating period and boiling stage, corresponding step of heating period (b1), the corresponding step of boiling stage (b2), wherein 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 the heat time (being that Power Regulation is than increasing) of the first heating power P1 or prolongation 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.
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 is 30 seconds, is even within 32 seconds, to be that whole cycle heater is 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 preferably by the second heating power P2 work not exceed 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 depression generator 22, during in normal condition, the first heating mode comprises heating period and boiling stage, and the heating power of the heater 11 in two stages can increase or extending heating time, thereby shortens cooking time.
As shown in Figure 2, the second heating mode comprises step (b3) and step (b4), and wherein (b3) control heater 11 heats with the 3rd heating power P3, until cover at pot the vapor (steam) temperature Tt >=three preset temperature T3 that 2 places detect; (b4) control heater 11 heats with the 4th heating power P4, until pot body bottom temp Tb >=four preset temperature T4 arriving in pot body floor detection, stop heater 11 and depression generator 22, wherein P3 < P1, and T4>T3.Preferably, P4 < P2≤P1, P3 < P2≤P1, P4≤P3.Specifically, above-mentioned steps (b3) is equivalent to the heating period at depression generator 22 electric cooker during in abnormality, above-mentioned steps (b4) is equivalent to the boiling stage at depression generator 22 electric cooker during in abnormality, wherein step (b3) and step (b4) and above-mentioned depression generator 22 in the time of normal condition step (b1) and step (b2) operation principle roughly the same.
More particularly, in the heating period of depression generator 22 electric cooker during in abnormality, controller 11 heats with the 3rd heating power P3, until cover at pot the vapor (steam) temperature Tt >=three preset temperature T3 that 2 places detect, wherein P3<P1, be preferably P3<P2≤P1, that is to say, compare step (b1), the power of heater 11 reduces, can reduce thus the generation of foam, thereby effectively avoid the foam overflow phenomenon causing in abnormality due to depression generator 22, improve anti-overflow effect.
At the boiling stage of depression generator 22 electric cooker during in abnormality, control heater 11 heats with the 4th heating power P4, until pot body bottom temp Tb >=four preset temperature T4 arriving in pot body floor detection, wherein P3 < P1, and T4>T3.Be preferably P4 < P2≤P1, P3 < P2≤P1, P4≤P3 and T4>T3, that is to say, compares step (b2), the power of heater 11 reduces, can further reduce thus the generation of foam, thereby effectively avoid the foam overflow phenomenon causing in abnormality due to depression generator 22, improve anti-overflow effect, after this step finishes, stop heater 11 and depression generator 22, complete culinary art.
Owing to adding depression generator 22 when the abnormality, reduce the heating power of heater 11, therefore reduce the generation of foam, avoided the foam overflow phenomenon that causes in abnormality due to depression generator 22, and then improved the anti-overflow effect of foam of electric cooker.
Further, at depression generator during in normal condition, control method also comprises and detects the interior quantity of food of pot body 1, and the second heating power P2 and the 4th heating power P4 are 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.
Particularly, 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 suitable heating power P2 or the 4th heating power P4, to select the size of the second heating power P2 as example, for example, in the time that quantity of food is more, larger heating power can be selected, in the time that quantity of food is less, less heating power can be selected, thereby effectively shorten cooking time, save energy consumption simultaneously.
Preferably, at depression generator during in normal condition, in step (b), the cycle of operation operation of depression generator 22 to be scheduled to, the predetermined cycle of operation is that the quantity of food based in pot body 1 is selected from the default cycle of operation.In other words, for the effect that guarantees that depression generator 22 defoams, save electric energy, depression generator 22 can be 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.
Describe as an example of depression generator 22 periodic runnings example below, 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 intermittent duties 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.
In some embodiments of the invention, at depression generator 22 during in abnormality, also can comprise according to the control method of the embodiment of the present invention: detect pot body 1 interior quantity of food, wherein the 4th heating power P4 is that quantity of food based in pot body 1 is selected from default heating power.
At depression generator 22 during in abnormality, detect in pot body the method for quantity of food have multiple, for example: in pot body, quantity of food is to determine the time that amplitude that in time of experiencing based on vapor (steam) temperature Tt rising predetermined temperature or unit interval, vapor (steam) temperature Tt rises or vapor (steam) temperature Tt rising unit temperature value experience.About the detection method of quantity of food, the method that detects pot body 1 interior quantity of food can be normal with depression generator 22 time is identical, repeats no more here.
According to the control method of the electric cooker of the embodiment of the present invention, in the time that depression generator is normal, heater is with first mode heating work, can effectively shorten cooking time, improve cooking efficiency, and in the time that depression generator is abnormal, heater is with the second pattern heating work, guaranteeing in cooking efficiency, to prevent as far as possible foam overflow, improve the foam anti-overflow effect of depression generator when abnormal.
Describe according to the electric cooker 100 of the embodiment of the present invention below with reference to Fig. 3.
As shown in Figure 3, according to the electric cooker 100 of the embodiment of the present invention comprise that pot body 1, pot covers 2, controller 3 and move inductor (scheming not shown).
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, in steam channel 21, be provided with the depression generator 22 for the interior generation localized low-pressure zone of 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, foam breaks after expanding rapidly under pressure differential effect, thereby prevent 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.
Operation inductor is located at pot and covers the running status for detection of depression generator 22 in 2.Preferably, operation inductor is integrated on depression generator 22, can detect better like this running status of depression generator 22, improves accuracy of detection.Certainly, be understandable that, operation inductor also processing and manufacturing separately, and be located to stew and cover in 2, for detection of the running status of depression generator 22.
Controller 3 is connected with depression generator 22 with heater 11, operation inductor respectively, for according to the running status of moving the depression generator 22 that detects of inductor, controls, regulates the duty of heater 11 and depression generator 22.Wherein, at depression generator 22 during in normal operating condition, controller 3 control heaters 11 heat with the first heating mode and depression generator 22 during in abnormal operating condition control heater 22 heat with the second heating mode, wherein under the second heating mode, the heating power of heater 11 is less than the heating power of heater 11 under first mode.
According to the electric cooker of the embodiment of the present invention, at depression generator 22 during in normal condition, controller 3 can control heater 11 with the first heating mode work of relatively high power, thereby shortening cooking time, improves cooking efficiency, and in the time of depression generator abnormality, controller 3 control heaters 1 are with the second pattern heating work of smaller power, guaranteeing in cooking efficiency, to prevent as far as possible foam overflow, improve the foam anti-overflow effect of depression generator when abnormal.
In one embodiment of the invention, pot covers in 2 and is provided with the top vapor (steam) temperature sensor that covers the vapor (steam) temperature at place for detection of pot, is provided with the bottom temp sensor for detection of pot body bottom temp of pot body bottom in pot body 1.
Under the first heating mode, controller 3 control heaters 11 heat until the vapor (steam) temperature Tt >=the first preset temperature T1 detecting at top vapor (steam) temperature sensor with the first heating power P1, and controller 3 control heaters 11 heat with the second heating power P2, until pot body bottom temp Tb >=the second preset temperature T2 arriving in pot body floor detection, for example bottom steam temperature sensor detects pot body bottom temp Tb >=the second preset temperature T2, stop heater 11 and depression generator 22, wherein T2>T1.Preferably, P2≤P1.Certainly,, in other embodiment of the present invention, P2 also can be greater than P1.
Under the second heating mode, controller 3 control heaters 11 heat with the 3rd heating power P3, until cover at pot the vapor (steam) temperature Tt >=three preset temperature T3 that 2 places detect, vapor (steam) temperature Tt >=three preset temperature the T3 that for example vapor (steam) temperature sensor in top detects, and controller 3 control heaters 11 heat with the 4th heating power P4, until pot body bottom temp Tb >=four preset temperature T4 arriving in pot body floor detection, for example bottom steam temperature sensor detects pot body bottom temp Tb >=four preset temperature T4, stop heater 11 and depression generator 22, wherein P3 < P1 and T4 > T3.Optimal way is P4 < P2≤P1, P3 < P2≤P1, P4≤P3, and T4 > T3.
Preferably, controller 3 is also for detection of the quantity of food in pot body 1, and the second heating power and the 4th heating power are to select from default heating power based on quantity of food.
Wherein, the method for the quantity of food in controller 3 detection pot bodies 1 can have multiple, describes below with three kinds of different detection modes, certainly, is 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, the needed time of vapor (steam) temperature Tt rising uniform temperature that controller 3 can cover 2 places according to pot judge quantity of food 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.
Determine after the number of quantity of food, controller 3 is based on current foodstuff amount grade, control heater 11 is at the heating power of different phase accordingly, that is to say, after the second heating power and the 4th heating power number based on current foodstuff amount by the concrete heating power of controller 3 controllers, thereby shortening cooking time, improves the anti-spilled effect of foam.For example, control the second heating power P2 as example take controller 3, determine after current foodstuff amount grade at 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, the second larger heating power P2 heating can be selected, in the time that quantity of food is less, the second less heating power P2 heating can be selected.
The wherein cycle of operation operation of depression generator to be scheduled to, the predetermined cycle of operation is also that the quantity of food based in pot body is selected from the default cycle of operation.In other words, for the effect that guarantees that depression generator 22 defoams, save electric energy, depression generator 22 can be selected the default cycle of operation according to the number of quantity of food under the first heating mode or the second heating mode simultaneously.Specifically, quantity of food is more, under identical heating power, the foam of its generation is also relatively more, quantity of food is fewer, and under identical heating power, the foam of its generation is also relatively fewer, therefore can according to quantity of food number select the cycle of operation that depression generator 22 is suitable, thereby in the effect that guarantees to defoam, save to greatest extent electric energy.
Describe as an example of depression generator 22 periodic runnings example below, 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 intermittent duties 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.
Preferably, depression generator 22 can be fan, and controller 3 can judge according to the rotating speed of fan or revolution in the given time the running status of depression generator 22.
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 (14)
1. the control method 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 control method comprises the following steps:
(a) detect the running status of described depression generator;
(b) if described depression generator in normal operating condition, controlling described heater heats with the first heating mode, if described depression generator is in abnormal operating condition, control described heater and heat with the second heating mode, wherein under described the second heating mode, the heating power of described heater is less than the heating power of described heater under described first mode.
2. control method according to claim 1, is characterized in that, stops described depression generator at described depression generator during in abnormal operating condition.
3. control method according to claim 1 and 2, is characterized in that:
Described the first heating mode comprises that (b1) controls described heater and heat with the first heating power P1, until the vapor (steam) temperature Tt >=the first preset temperature T1 at described pot lid place; With
(b2) control described heater and heat with the second heating power P2, until pot body bottom temp Tb >=the second preset temperature T2 of described pot body bottom stops described heater and described depression generator, wherein T2>T1;
Described the second heating mode comprises:
(b3) control described heater and heat with the 3rd heating power P3, until the vapor (steam) temperature Tt >=three preset temperature T3 at described pot lid place; With
(b4) controlling described heater heats with the 4th heating power P4, until pot body bottom temp Tb >=four preset temperature T4 of described pot body bottom, stop described heater and described depression generator, wherein P3<P1, and T4>T3.
4. control method according to claim 3, it is characterized in that, also comprise: detect quantity of food in described pot body, and described the second heating power P2 and described the 4th heating power P4 are that quantity of food based in described pot body is selected from default heating power.
5. control method according to claim 1, it is characterized in that, in step (b), the cycle of operation operation of described depression generator to be scheduled to, the described predetermined cycle of operation is that the quantity of food based in described pot body is selected from the default cycle of operation.
6. control method according to claim 1, is characterized in that, described step (a) is carried out with predetermined time interval.
7. control method according to claim 1, it is characterized in that, described depression generator is fan, when the rotating speed of described fan within the scope of the first pre-set velocity or the revolution of described fan in Preset Time in the first default range of revolution time described in fan in normal operating condition, when the rotating speed of described fan within the scope of the second pre-set velocity or the revolution of described fan in Preset Time in the second default range of revolution time described in fan in abnormal operating condition.
8. 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 localized low-pressure zone in described steam channel in described steam channel;
Operation inductor, described operation inductor is located at the running status for detection of described depression generator in described pot lid; With
Controller, described controller is connected to control at described depression generator that described heater heats with the first heating mode during in normal operating condition with described heater, described operation inductor respectively and controls described heater at described depression generator during in abnormal operating condition and heat with the second heating mode with described depression generator, wherein under described the second heating mode, the heating power of described heater is less than the heating power of described heater under described first mode.
9. electric cooker according to claim 8, it is characterized in that, in described pot lid, be provided with the top vapor (steam) temperature sensor for detection of the vapor (steam) temperature at described pot lid place, in described pot body, be provided with the bottom temp sensor for detection of pot body bottom temp of described pot body bottom.
10. electric cooker according to claim 9, it is characterized in that, under described the first heating mode, described in described controller control, heater heats until the vapor (steam) temperature Tt >=the first preset temperature T1 that described top vapor (steam) temperature sensor detects with the first heating power P1, and described in described controller control, heater heats with the second heating power P2, until pot body bottom temp Tb >=the second preset temperature T2 that described bottom temp sensor detects, stop described heater and described depression generator, wherein T2>T1.
11. electric cookers according to claim 10, it is characterized in that, under described the second heating mode, described in described controller control, heater heats with the 3rd heating power P3, until the vapor (steam) temperature Tt >=three preset temperature T3 detecting at described pot lid place, and described in described controller control, heater heats with the 4th heating power P4, until pot body bottom temp Tb >=four preset temperature T4 arriving in described pot body floor detection, stop described heater and described depression generator, wherein P3<P1, and T4>T3.
12. electric cookers according to claim 11, it is characterized in that, described controller is also for detection of the quantity of food in described pot body, described the second heating power and the 4th heating power are to select from default heating power based on described quantity of food, the cycle of operation operation of described depression generator to be scheduled to, the described predetermined cycle of operation is that the quantity of food based in described pot body is selected from the default cycle of operation.
13. electric cookers according to claim 8, is characterized in that, described depression generator is fan, and described controller judges the running status of described depression generator according to the rotating speed of described fan or revolution in the given time.
14. electric cookers according to claim 8, is characterized in that, described operation inductor is integrated on described depression generator.
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