Background technology
At present, electric heating pot has become one of kitchen tools that generally use in the people life, and it has health, advantage such as convenient, fast.
As shown in Figure 1, the common electrical heating kettle comprises heater 1, is positioned at the pot body 2 and the pot cover 3 on heater 1 top, and the side of pot body 2 is provided with control module 4, is used for 1 pair of pot body 2 of control heater and heats.In heating process, an important problem is after food seethes with excitement in pot body 2, needs anti-Spill stopping pan phenomenon to take place.
The applying date is on August 29th, 2005, and application number is 200510093419.7, and the Chinese invention patent application that name is called " anti-overflow pot cover of band passage " preferably resolves above-mentioned anti-overflow problem.As shown in Figure 1, in this patent, in order to solve the pot problem of overflowing, the technical scheme that it adopted is: be provided with a passage 5 on pot cover 3, be provided with anti-flow electrode 6 in the passage 5, anti-flow electrode 6 is connected with control module 4 by lead-in wire.Simultaneously, control module 4 also is connected with pot body 2 by another lead-in wire.After food boiling in the pot body 2, the foam that the pot that overflows produces is pressed close to the passage 5 on the pot cover 3 and is contacted with anti-flow electrode 6, and because the foam that produces can conduct electricity, so the anti-flow electrode 6 that is positioned at passage 5 is by a foam and 2 conductings of pot body, and then makes and form closed loop between anti-flow electrode 6, pot body 2 and the control module 4.Control module 4 detects the conducting state that is in this loop, learn that this electric heating pot has produced excessive pot, thereby control heater 1 stops heating, has avoided the generation of excessive pot phenomenon.After stopping to heat a period of time, the foam that the pot that overflows produces falls after rise, is electrically connected disconnections between anti-flow electrode 6 and the pot body 2, and control module 4 detects the loop and disconnects thus, learns excessive pot of phenomenon disappearance of electric heating pot, heats thereby can continue control heater 1.
Can produce " the false pot that overflows " phenomenon in the above-mentioned heating process: because electric heating pot is through food such as being usually used in cooking congee, can have thick substances in the foam that the pot that overflows produces, therefore foam is through passage 5 time, passage 5 is produced to be stopped up, and owing in heating process, can be covered with the conductive steam of one deck on pot cover 3 inner surfaces, and then make the loop be in conducting state always, control module 4 can think that electric heating pot is in the pot state that overflows by mistake, thereby stop heating, and because blocked state can not be eliminated automatically, electric heating pot can not continue heating, causes food not yet done.
The specific embodiment
The invention provides a kind of electric heating pot method for heating and controlling, it has solved and can occur the false pot phenomenon of overflowing in the prior art, causes the not yet done problem of food.Below in conjunction with accompanying drawing the present invention is described in detail.
As shown in Figure 2, the electric heating pot method for heating and controlling of the embodiment of the invention comprises:
Step 101: after electric heating pot overflows pot under the normal condition, stop heating, judge that whether electric heating pot is in the time of the pot state that overflows greater than setting-up time; Wherein, described setting-up time is at least under the normal condition electric heating pot and overflows behind the pot, stops heating, the time that described excessive pot state can continue;
Step 102: if, then described electric heating pot is become the false pot mode of heating that overflows, described electric heating pot is continued heating.
The present invention by time of judging electric heating pot and being in the pot state that overflows whether greater than setting-up time, determine whether electric heating pot is in the false pot state that overflows; If electric heating pot is in the false pot state that overflows, then electric heating pot is become the false pot mode of heating that overflows, electric heating pot is continued heating, the excessive pot of this a vacation mode of heating can define flexibly, as long as realize electric heating pot is continued heating, just can overcome in the prior art and false overflowing to occur and stop heating during pot, cause the not yet done problem of food.
Further, in order to eliminate the blocked state of passage 5, and then the false pot phenomenon of overflowing of elimination, the excessive pot of a described vacation mode of heating preferably makes the height of described electric heating pot inner foam be lower than the height of passage 5, because still heat electric heating pot this moment, so electric heating pot can constantly produce steam, the steam of generation can continue to impact passage 5, gradually the obstruction in the passage 5 is disposed, thereby eliminated the false pot phenomenon of overflowing.
For the false excessive pot phenomenon of more effective elimination, described vacation is overflow the pot mode of heating further for replacing mode of heating.Alternately mode of heating mainly contains following two kinds, and first kind is not heat and heating hockets, and second kind is that high power heating and low-power heat and hocket.On the basis of these two kinds of mode of heatings, alternately mode of heating can also adopt other deriving mode, mixes the mode of using as the high-low power heating with not heating, as long as can realize the continuation of pot is heated, and a pot inner foam height is lower than the passage height and gets final product.
In order to eliminate the false pot phenomenon of overflowing preferably, above-mentioned two kinds alternately mode of heating be specially:
One: do not heat and heating when hocketing when adopting, to suppose that its heating power is P1, be T1 heat time heating time, and be not T2 heat time heating time, then,
Described not heat time heating time, T2 was greater than making electric heating pot become the time of plateau from the pot state that overflows;
Described heat time heating time, T1 was when heating with 1 pair of electric heating pot of power P, made electric heating pot become the time of the pot state that overflows once more from plateau;
Described plateau is: the state the when height of foam descends no longer fast in the electric heating pot, the state when just the height of foam slowly changes.
Two: when adopting high power heating and low-power heating to hocket, suppose that its high power is P1, be T1 corresponding heat time heating time, and low-power is P2, and be T2 corresponding heat time heating time, then,
Described heat time heating time, T2 was when heating with 2 pairs of electric heating pots of power P, made electric heating pot become the time of plateau from the pot state that overflows;
Described heat time heating time, T1 was when heating with 1 pair of electric heating pot of power P, made electric heating pot become the time of the pot state that overflows once more from plateau;
Described plateau is: the state the when height of foam descends no longer fast in the electric heating pot, the state when just the height of foam slowly changes.
At this, residing state when describing electric heating pot heating earlier.After the pot boiling, can produce foam in the pot, continue heating, then the height of foam can constantly rise, and when rising to certain altitude, electric heating pot will be in the pot state that overflows, and can be detected this moment by control module 4; After stopping heating or being reduced to certain power heating, foam in the pot can descend gradually, because foam has certain viscosity, so it can complete obiteration, the height of last pot inner foam can descend no longer fast, remain unchanged substantially, thereby electric heating pot is in the defined plateau of the present invention.
By above-mentioned two kinds of concrete alternately mode of heatings as can be known, electric heating pot is alternately to change between the state of the pot that be about to overflow and the plateau: do not heat or during the low-power heating when being in, electric heating pot has time enough and becomes plateau from the overflow state of pot of the pot state or be about to of overflowing; And in At All Other Times, promptly be in heating or high power when heating accordingly, can guarantee that electric heating pot can not overflow pot once more.Therefore, adopt alternately mode of heating after, electric heating pot can constantly produce steam, the steam of generation can continue to impact passage 5, gradually the obstructions in the passage 5 is disposed, thereby is eliminated the false pot phenomenon of overflowing.After the disappearance of pot phenomenon was overflow in vacation, electric heating pot can change normal mode of heating over to and work on.
In the present embodiment, the definition plateau is because this state is easy to observation, thereby selects heating power and time easily, realizes the thermal control that adds to electric heating pot.Above-mentioned two kinds of power (P1 perhaps is P1 and P2) sizes that concrete alternately mode of heating adopts can be selected according to the heating needs.Behind the selected power, the size of time T 1 and T2 can draw according to experimental measurement accordingly.
Present embodiment is to guarantee under the non-overflow pan prerequisite, electric heating pot is heated, eliminate obstruction in the passage 5 by the steam that produces, therefore, as long as satisfy this requirement, above-mentioned vacation is overflow the pot mode of heating except employing replaces mode of heating, can also adopt other mode of heating, continues mode of heating as a certain certain power.And Comparatively speaking, alternately mode of heating has following advantage: it can be transferred to by plateau in the process that is about to pot state that overflows at electric heating pot, make steam produce the impulsive force of relatively concentrating to passage 5, more effective elimination is stopped up, and then eliminates the false pot phenomenon of overflowing.
In the present embodiment, be in the false pot state that overflows in order to detect electric heating pot, described setting-up time is at least under the normal condition electric heating pot and overflows behind the pot, stops heating, the time that described excessive pot state can continue.Because electric heating pot overflows behind the pot, stop heating, an excessive pot state meeting certain time, afterwards, the foam that the pot that overflows produces falls after rise, and anti-flow electrode 6 no longer is communicated with a pot body 2, and control module 4 can detect circuit and is in off-state thus, and then the excessive pot state of learning electric heating pot disappears, and electric heating pot just can revert to the normal heating mode and worked on this moment.For the excessive pot of a vacation state that accurately detects electric heating pot, described setting-up time should be the maximum time that described excessive pot state can continue; In order comparatively fast to detect the false pot state that overflows, then described setting-up time should be the average time that described excessive pot state can continue.
In sum, the present invention adopts the false pot mode of heating that overflows that electric heating pot is continued heating, and ingenious, the rational degree of heat of having controlled, and utilizes the steam that produces in the pot, smoothly the obstruction in the passage is disposed, fundamentally solved false excessive pot phenomenon.Adopted the electric heating pot of technical solution of the present invention, can be safely, stable, the automatic heating when realizing unmanned reliably, ease of use strengthens greatly.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.