CN102805551A - Anti-overflow moisture-preserving electric cooker and cooking control method thereof - Google Patents
Anti-overflow moisture-preserving electric cooker and cooking control method thereof Download PDFInfo
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- CN102805551A CN102805551A CN2012101593448A CN201210159344A CN102805551A CN 102805551 A CN102805551 A CN 102805551A CN 2012101593448 A CN2012101593448 A CN 2012101593448A CN 201210159344 A CN201210159344 A CN 201210159344A CN 102805551 A CN102805551 A CN 102805551A
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Abstract
The invention discloses an anti-overflow moisture-preserving electric cooker and a cooking control method thereof, and relates to the technical field of kitchen cooking equipment. By the anti-overflow moisture-preserving electric cooker, the technical problem that overflow is difficult to avoid in the prior art. The anti-overflow moisture-preserving electric cooker comprises a cooker body and a cooker cover, wherein a steam valve with vent holes is arranged on the cooker cover; accommodating space opposite to the vent holes is arranged in the steam valve; a valve body is accommodated in the accommodating space and encloses part of areas of the vent holes under the action of the gravity of the valve body and is away from the vent holes under the pushing of air flow which is exhausted from the vent holes; and a sensor which is connected to a control circuit is arranged on the cooker cover and sends a detection signal to the control circuit under the trigger action of the valve body. The anti-overflow moisture-preserving electric cooker is mainly used for various electric cookers such as ordinary electric cookers, electromagnetic heating electric cookers and the like.
Description
Technical field
The present invention relates to the kitchen cooking equipment technical field, relate in particular to anti-overflow in the kitchen cooking equipment preserve moisture electric cooker and cooking control method thereof.
Background technology
Electric cookers such as existing electric cooker, electric cooking pot generally can be installed exhaust steam valve on pot cover; So that the steam that produces in the heating process is discharged; Better simply exhaust steam valve scheme is for being provided with a through hole identical with the external world on pot cover, the steam in the pot is discharged through this through hole.Designed relevant exhaust steam valve structure in the prior art, as: the design fan structure at the exhaust steam valve place can make vapor bubbles can become liquid, so that be back in the pot with staving through the bubble in the steam of exhaust steam valve.
Realizing and using in the process of above-mentioned exhaust steam valve; The inventor finds to exist at least in the prior art following problem: after existing electric cooker is heated to and in the pot steam is arranged; Steam can be discharged from exhaust steam valve at once, can not be unfavorable for cooking food with keeping certain humidity in the pot; In addition, if the user forgets the installation exhaust steam valve, existing electric cooker still can heat, and causes the certain energy waste.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiency of prior art and a kind of anti-overflow preserve moisture electric cooker and cooking control method thereof is provided, and can prevent that soup overflows in the cooking process.
For achieving the above object, the present invention adopts following technical scheme:
A kind of anti-overflow electric cooker of preserving moisture comprises pot body and pot cover, and the steam valve with steam vent is installed on the said pot cover; Position corresponding to said steam vent in said steam valve is provided with accommodation space; Be equipped with valve body in the said accommodation space; Said valve body is sealed said steam vent subregion under the self gravitation effect, and under the air-flow of discharging from steam vent promotes away from said steam vent;
Said pot cover is provided with the sensor that is connected to control circuit, and said sensor sends to said control circuit with detection signal under the valve body trigger action.
Said sensor is mechanical actuating type sensor, and said valve body triggers said mechanical actuating type sensor under the gravity effect; Perhaps said valve body is the magnetic valve body, and said sensor is a magneto-dependent sensor.
Said magnetic valve body is column valve body with magnetic, or ellipsoid shape valve body, or ball valve with magnetic with magnetic.
Said steam valve comprises the bonnet, and the bottom flange of involutory assembling;
Said bottom flange inside is provided with groove, and said steam vent is opened in said groove; Said valve body is located in the accommodation space of said groove formation; Perhaps
Said bottom flange comprises cover plate and valve holder, and said cover plate bottom is provided with perforation, and said valve holder is located at said perforation place; Said valve holder is provided with said steam vent, and said valve body is located in the inner accommodation space of said valve holder.
Be respectively equipped with the guide frame that is complementary on said accommodation space diapire and the said valve body, said valve body moves along guide frame.
Said pot cover is provided with the Anti-stop cover with air-vent that covers said steam vent; Perhaps said pot cover is provided with the anti-blocking baffle plate that covers said steam vent part exhaust gas region.
A kind of cooking control method of claim electric cooker, said method comprises:
Detect steps A: control circuit if said sensor detects said valve body away from said steam vent, then stops heating in first scheduled time after starting the electric cooker cooking function.
Said steps A comprises: control circuit is carried out following steps in first scheduled time after starting the electric cooker cooking function:
A1) detect current kettle temperature;
A2) during temperature,, then stop heating less than protection at kettle temperature if said sensor detects said valve body away from said steam vent;
A3) when kettle temperature is not less than the protection temperature,, then stop heating if sensor detects said valve body away from said steam vent after stopping to heat the 3rd scheduled time.
A kind of cooking control method of electric cooker, said method comprises:
Anti-overflow control step B: if select to have the culinary art of anti-overflow function, after said first scheduled time after starting the electric cooker cooking function, if said sensor detects said valve body away from said steam vent, then control circuit carries out the culinary art of anti-overflow pattern.
Said method also comprises:
Rice cooking step C: if select the rice culinary art, control circuit does not detect under the situation of said valve body away from said steam vent at said sensor, cooks according to the cooking rice pattern.
Said step B comprises: if select to have the culinary art of anti-overflow function, control circuit is carried out following steps after said first scheduled time after starting the electric cooker cooking function:
B1) detect current kettle temperature;
B2) in detected temperature when overflowing temperature, if said sensor detects said valve body away from said steam vent, then carry out the culinary art of anti-overflow pattern;
B3) be not more than when overflowing temperature in detected temperature,, then stop heating if said sensor detects said valve body away from said steam vent.
The culinary art that said control circuit carries out the anti-overflow pattern comprises:
1) when sensor detects said valve body away from said steam vent, stops heating;
2) when sensor detects said valve body near said steam vent, start heating after second scheduled time of delaying time.
State the corresponding relation that prestores at least two boiling temperatures in the electric cooker control circuit and add ratio of specific heat;
The culinary art of said anti-overflow pattern also comprises: when sensor detects said valve body away from said steam vent, add ratio of specific heat with heating than searching target in the corresponding relation at said boiling temperature according to detected temperature;
Startup in the culinary art of said anti-overflow pattern is heated to be and adds ratio of specific heat according to said target and heat.
Said method also comprises:
Uncap and remind step D: after accomplishing culinary art, if said sensor detects said valve body and reaches scheduled duration continuously near said steam vent, control circuit then sends and allows the prompting of uncapping; Otherwise control circuit sends and does not allow the prompting of uncapping.
Anti-overflow provided by the invention preserve moisture electric cooker and cooking control method thereof; Owing to be provided with valve body at the steam vent place, can hinder a part of steam through this valve body and discharge electric cooker, make electric cooker can keep certain humidity; Play the effect of preserving moisture, help cooking food; And after the employing embodiment of the invention,, can promote valve body, make steam vent steam discharge normally, can not influence the operate as normal of electric cooker if the quantity of steam in the pot is bigger.
In addition; The electric cooker that adopts the embodiment of the invention to provide with valve body is set in the steam valve, detects this valve body through sensor; Can judge that drawing this electric cooker possibly be in following state: fluidized state in neglected loading steam valve state or uncap state or the pot; So that carry out the control of electric cooker, as stop heating, make electric cooker can be better, more safely work.
Adopt the cooking control method of electric cooker in the embodiment of the invention; Can carry out state through the state that detects steam valve judges; Can judge at the initial stage that just begins to cook and whether to be in normal occlusion lid state and whether steam valve correctly is installed; After culinary art a period of time, can carry out the anti-overflow culinary art, make that the anti-overflow function of electric cooker is more reliable.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is equipped with the electric cooker partial schematic diagram of steam valve for the embodiment of the invention;
Fig. 2 is a steam valve lower cover direction schematic perspective view in the embodiment of the invention one;
Fig. 3 is a steam valve loam cake direction schematic perspective view in the embodiment of the invention one;
Fig. 4 is the cover plate one side sketch map of the bottom flange of steam valve in the embodiment of the invention one;
Fig. 5 is the cover plate opposite side sketch map of the bottom flange of steam valve in the embodiment of the invention one;
Fig. 6 is the valve holder structure sketch map of steam valve in the embodiment of the invention one;
The pot cover cutaway view of Fig. 7 for not setting up defences and stop up plate in the embodiment of the invention;
Fig. 8 is an electronic type control loop sketch map in the embodiment of the invention one;
Fig. 9 is a mechanical type control loop sketch map in the embodiment of the invention one;
Figure 10 is the steam valve control flow chart of the cooking control method of electric cooker in the embodiment of the invention two;
Figure 11 is the control flow chart of culinary art incipient stage in the embodiment of the invention two;
Figure 12 is the control flow chart in cooking process stage in the embodiment of the invention two;
Figure 13 is the flow chart of anti-overflow culinary art in the embodiment of the invention two;
Figure 14 is the control flow chart of culinary art ending phase in the embodiment of the invention two.
Reference numeral.
| 10 | Bonnet, | 20 | |
40 | |
| 21 | |
22 | |
50 | |
| 23 | |
24 | |
60 | Magneto-dependent sensor |
| 25 | The |
26 | |
70 | Single-chip microcomputer |
| 27 | Guide- |
30 | Valve body | 28 | Anti-blocking baffle plate |
The specific embodiment
The embodiment of the invention provides a kind of anti-overflow electric cooker of preserving moisture, and is as shown in Figure 1, and this electric cooker comprises a pot cover 1 and a pot body 2, and steam valve 3 is installed on the pot cover, so that can in electric cooker, keep certain humidity; In the embodiment of the invention steam valve be provided with pot cover on the corresponding steam vent 21 of pore; Position corresponding to said steam vent 21 in said steam valve is provided with accommodation space 22, and is provided with valve body 30 in the accommodation space 22, and this valve body 30 is sealed the valve body 30 of said steam vent 21 subregions under the self gravitation effect; When the steam in pot was discharged through this steam vent 21, if the steam flowing velocity is bigger, then this valve body 30 can be promoted by the air-flow that passes through from said steam vent 21, makes valve body 30 away from exhaust hole 21.In order to utilize the State Control electric cooker of steam valve; The embodiment of the invention is provided with the sensor that is connected to control circuit on pot cover 1; Said sensor sends to said control circuit with detection signal under the valve body trigger action, magneto-dependent sensor 60 is exactly a kind of implementation of sensor among Fig. 7.
Behind the electric cooker that the employing embodiment of the invention provides; Detect valve body through sensor; Can judge that drawing this electric cooker possibly be in following state: fluidized state in neglected loading steam valve state or uncap state or the pot; So that carry out the control of electric cooker, as stop heating, make electric cooker can be better, more safely work.
Electric cooker provided by the invention and cooking control method thereof; Owing to sexual valve body is set at the steam vent place, can hinder a part of steam through this valve body and discharge electric cooker, make electric cooker can keep certain humidity; Play the effect of preserving moisture, help cooking food; And after the employing embodiment of the invention,, can promote valve body, make steam vent steam discharge normally, can not influence the operate as normal of electric cooker if the quantity of steam in the pot is bigger.
The concrete implementation of steam valve, valve body, sensor can adopt multiple different schemes in the embodiment of the invention; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one:
The embodiment of the invention provides a kind of electric cooker; This electric cooker comprises pot cover 1 and pot body 2; And pot cover 1 is provided with steam valve 3, so that can in electric cooker, keep certain humidity, as shown in Figures 2 and 3; The steam valve 3 that the embodiment of the invention provides comprises the bonnet, 10 and bottom flange 20 of involutory assembling, and on bottom flange 20, is provided with steam vent 21; In order in pot, to keep certain humidity; As shown in Figure 2; Embodiment of the invention exhaust steam valve position corresponding to said steam vent 21 in said bottom flange 20 is provided with accommodation space (not shown among Fig. 2); This accommodation space in Fig. 2 by the plate 23 among the figure around forming, and in accommodation space, be equipped with the valve body 30 (referring to shown in Figure 1) of the said steam vent of obstruction 21 subregions, on steam vent 21 subregions are blocked after; Steam in the pot will reduce the velocity of discharge, thereby keep having certain humidity in the pot.In addition, the air-flow that the valve body 30 in the embodiment of the invention can be passed through from said steam vent 21 promotes, so that in pot, can valve body 30 be pushed open after the boiling, carries out very fast steam discharge.
Involutory structure in the embodiment of the invention between bonnet, 10 and the bottom flange 20 can adopt but be not limited to buckle structure 40 and hook structure 50 as shown in Figure 2.
Adopt after the steam valve that the embodiment of the invention provides, make and to keep certain humidity in the electric cooker, play the effect of preserving moisture, help cooking food; And after the employing embodiment of the invention,, can promote valve body 30, make steam vent steam discharge normally, can not influence the operate as normal of electric cooker if the quantity of steam in the pot is bigger.
The embodiment of the invention also on pot cover the position of corresponding said valve body be provided with the sensor that is connected to control circuit; Valve body can trigger sensor; And after valve body triggers said sensor; Sensor sends to said control circuit with detection signal, so that control circuit is cooked control.Carry out steam valve is detected in order to cooperate, valve body in the embodiment of the invention and sensor can adopt but be not limited to following scheme:
The first, sensor is mechanical actuating type sensor; Said valve body touches said mechanical actuating type sensor under the gravity effect; After valve body touches, can trigger said mechanical actuating type sensor detection signal is sent to said control circuit; The concrete mounting means of mechanical actuating type sensor and valve body is not shown in the accompanying drawing of the embodiment of the invention, but those skilled in the art can design as required.
The second, as shown in Figure 1; Valve body 30 in the present embodiment can adopt the valve body with magnetic; Perhaps said valve body is the magnetic valve body, and said sensor is a magneto-dependent sensor 60, and said magneto-dependent sensor 60 sends to said control circuit with the detection signal of detected said magnetic valve body; During concrete the utilization, magneto-dependent sensor can adopt but be not limited to magnetoresistive transducer, Hall element, tongue tube, door status switch or microswitch etc.
Promote said valve body for the ease of steam; Need valve body 30 be designed to the shape that is easy to move, particularly the embodiment of the invention can be designed to valve body but be not limited to following scheme: the column valve body, or ellipsoid shape valve body, or the ball valve with magnetic with magnetic that valve body are designed to have magnetic.
Steam vent can adopt but is not limited to following scheme in the embodiment of the invention: like Fig. 4, Fig. 5 and shown in Figure 6; Said bottom flange comprises cover plate 24 and valve holder 25; Wherein Fig. 4 and Fig. 5 represent cover plate 24 structures; Fig. 6 representes valve holder structure 25, and said cover plate 24 bottoms are provided with perforation 26, and said valve holder 25 is located at said perforation 26 places; Said valve holder 25 is provided with said steam vent 21, and said valve body 30 is placed in the accommodation space 22 of said valve holder 25 inside.When reality was used, above-mentioned cover plate 24 can adopt but be not limited to the ultrasonic bonding mode with valve holder 25 and be fixed together.
Except the above-mentioned mode that accommodation space and steam vent be set, the embodiment of the invention can also be made of one valve holder and cover plate, and concrete implementation can be provided with groove in bottom flange inside, and steam vent is opened in said groove; Above-mentioned valve body is placed in the accommodation space of said groove formation; During concrete the utilization two baffle plates can also be set in said groove; To limit the space of valve body; Guarantee that valve body moves on the direction of design in advance, a cover plate can also be set on said baffle plate, to guarantee that the valve body in the groove can not drop when overturning pot cover.When valve body is positioned at a side at steam vent place, with the obstruction that forms steam in the pot, thereby play the effect of preserving moisture,, valve body will accelerate velocity of exhaust after being pushed open by steam.
No matter adopt which kind of mode that accommodation space and steam vent are set; Motion for the ease of valve body; The embodiment of the invention all can be respectively equipped with the guide frame that is complementary on the diapire of accommodation space with on the said valve body; The air-flow that passes through from steam vent will promote said valve body, make valve body move along said guide frame.Concrete guide frame can adopt but be not limited to following structure: as shown in Figure 6; On accommodation space 22 diapires, rail groove 27 is set; On valve body 30, be provided with and the convex tendon that is complementary with rail groove 27; When steam promotes valve body, the convex tendon on the valve body 30 will be that moving of valve body provides guiding along rail groove; In order to guarantee that valve body can continue to stop up steam vent 21 under the situation of steam power deficiency; The end that the embodiment of the invention is positioned at said guide-track groove 27 in said steam vent 21 is designed to be lower than the other end of guide-track groove 27; Make after steam is discharged; Valve body 30 can rely on self gravitation to get back to the position of steam vent, continues the performance moisture-keeping function.
Adopt after the embodiment of the invention, can detect valve body, specifically can distinguish the following two states of valve body through the difference of sensor signal through sensor: valve body away from steam vent state or valve body near the steam vent state; The embodiment of the invention specifically detect control procedure can for: when the detected detection signal of said sensor is indicated said valve body away from said steam vent; Possibly occur then that neglected loading steam valve or pot cover are opened or pot in boiling; So control circuit can confirm that said electric cooker is a fluidized state in neglected loading steam valve state or uncap state or the pot according to the duty before the electric cooker, so that further control said electric cooker.Generally speaking, the embodiment of the invention can be controlled heater circuit and stop heating after detecting above-mentioned state appearance, perhaps controls electric cooker and carries out other actions, does not give unnecessary details one by one here.
When the electric food warmer culinary art of using the embodiment of the invention to provide is cooked congee, because congee is comparatively sticky, can not blocked by sticky thing in order to guarantee valve body, the embodiment of the invention can be provided with the Anti-stop cover with air-vent that covers said steam vent on pot cover; Also can the anti-blocking baffle plate 28 that cover said steam vent part exhaust gas region be set on pot cover according to scheme shown in Figure 1.Certainly, those skilled in the art can remove this anti-blocking baffle plate or Anti-stop cover as required, and adopt scheme shown in Figure 7.
After the electric food warmer that the employing embodiment of the invention provides; Have only steam valve to be installed and to be covered pot cover to make door status switch or microswitch closed, so that begin culinary art, in cooking process; Along with pot inner pressure increases; Steam has the motion of magnetic valve body with promotion, and when reaching the certain displacement amount, door status switch or microswitch will be switched to off-state by closure state.The steam valve checkout gear that adopts the embodiment of the invention to provide can utilize its detected signal to carry out the power adjusting of heat-generating system, thereby realize insulation, anti-overflow function.
Concrete magneto-dependent sensor 60 can use the electronic type control loop, also can use the mechanical type control loop, introduces magneto-dependent sensor below respectively in detail and detects the principle of controlling behind the signal:
The first, under the situation that adopts the electronic type control loop, the schematic diagram of control loop is as shown in Figure 8.
Steam valve detects and the detection of uncapping: in Fig. 8; If steam valve is not installed or pot cover is in open mode; Valve body 30 in the steam valve will move along the OFF direction shown in the arrow among Fig. 8; Door status switch K1 is in the OFF state, and single-chip microcomputer 70 detects high level signal, and machine is not worked under this state; When steam valve being installed and covering pot cover, door status switch K1 is in the ON state, and single-chip microcomputer detects low level signal, machine operate as normal under this state.
Boiling detects: when the scheme of employing Fig. 8 is cooked, be in place like steam valve, single-chip microcomputer detects low level signal at the beginning; When single-chip microcomputer detects high level signal first, explain that pot interior steam is more, should be in fluidized state, can suspend heating, so can stop heating through detected signal controlling.
The second, under the situation that adopts the mechanical type control loop, the schematic diagram of control loop is as shown in Figure 9.
Steam valve detects and detections of uncapping: in Fig. 9, if steam valve is not installed or pot cover is in open mode, the valve body 30 in the steam valve will move along the OFF direction shown in the arrow among Fig. 9, microswitch K2 disconnection, and machine is not worked under this state; When steam valve being installed and covering pot cover, microswitch K2 is closed, machine operate as normal under this state.
Boiling detects: when adopting the scheme of Fig. 9 to cook, be in place like steam valve, microswitch K2 is closed, can carry out normal heating, and steam is more in the pot, and the valve body in the steam valve is promoted, and will make microswitch K2 break off, and explains and seethes with excitement.
Embodiment two:
The embodiment of the invention provides a kind of cooking control method of electric cooker; This electric cooker adopts the structure that provides among the embodiment one; Can describe in the reference implementation example one, repeat no more here, the cooking control method of electric cooker comprises the detection steps A: in first scheduled time after starting the electric cooker cooking function; If said sensor detects said valve body away from said steam vent, then stop heating; Because detecting after starting, general valve body can be because of the promotion of steam away from steam vents, do not cover and put in place so can confirm as neglected loading steam valve or pot cover, so need stop heating; Certainly can also otherwise point out the user this moment, as carry out alarm or demonstration stops state heated etc.
Certainly; In order to prevent to occur the pot phenomenon of overflowing in the cooking process; Comprise anti-overflow control step B in the embodiment of the invention electric cooker cooking process: if select to have the culinary art of anti-overflow function, for example: the cooking function of cooking congee, Baoshang cooking function or the like, after said first scheduled time after starting the electric cooker cooking function; If said sensor detects said valve body away from said steam vent, then carry out the culinary art of anti-overflow pattern; Owing to after heating a period of time, detect valve body again away from said steam vent; Expression magnetic valve body is the promotion that has received steam; The pot that overflows possibly take place so can confirm this moment; For anti-Spill stopping pan need get into the culinary art of anti-overflow pattern, the culinary art of concrete anti-overflow pattern can be adopted but be not limited to the scheme of subsequent descriptions.
Above-mentioned detection steps A and anti-overflow control step B are the control modes of two time periods, can only adopt one of them of above-mentioned two steps when specifically using.For the electric cooker that makes the embodiment of the invention provide can be applicable to more function, the cooking control method of the embodiment of the invention can also comprise the steps:
Rice cooking step C: if select the rice cooking function; The pot phenomenon because overflowing can not appear in the rice culinary art; So need adjustment culinary art pattern; No longer carry out above-mentioned anti-overflow control step B, but in detecting steps A, do not detect under the situation of said valve body away from said steam vent, can cook according to the cooking rice pattern.Any scheme during the culinary art of concrete rice pattern can be adopted, this belongs to program comparatively commonly used, repeats no more here.
Regardless of the concrete culinary art pattern of electric cooker in the embodiment of the invention, after accomplishing culinary art, the electric cooker cooking control method can also increase following steps in the embodiment of the invention:
Uncap and remind step D: after accomplishing culinary art; If said sensor detects said valve body and reaches scheduled duration continuously near said steam vent; It is less relatively that a quantity of steam continues scheduled duration in the expression pot, and it is comparatively safe that open pot cover this moment, allows the prompting of uncapping so send; Otherwise quantity of steam is also many in the expression pot, sends not allow the prompting of uncapping, and the scheduled duration in the embodiment of the invention can adopt 0.5min to 10min not wait in general, specifically confirms according to product demand.
Allow in the embodiment of the invention to uncap prompting and the prompting that do not allow to uncap all can be adopted sound prompting mode or display alarm mode, or the combination of two kinds of alerting patterns.
Can sensor be arranged on said steam vent position in the embodiment of the invention; Thus, as long as detect valve body, just can show that said sensor detects said valve body away from said steam vent away from said sensor.Magneto-dependent sensor in the embodiment of the invention can be selected door status switch for use; Specifically can be with reference to the implementation among figure 8 and Fig. 9; In such cases, the signal that detects the door status switch disconnection just can be represented the magnetic valve body away from magneto-dependent sensor, and just valve body is away from steam vent.
The concrete implementation of above-mentioned anti-overflow control step B can adopt following scheme: if select to have the culinary art of anti-overflow function, carry out following steps after said first scheduled time after starting the electric cooker cooking function:
B1) detect current kettle temperature;
B2) in detected temperature when overflowing temperature, if said sensor detects said valve body away from said steam vent, then carry out the culinary art of anti-overflow pattern;
B3) be not more than when overflowing temperature in detected temperature,, then stop heating if said sensor detects said valve body away from said steam vent.
Generally speaking, kettle temperature is difficult in to reach within 5 minutes and overflows temperature, and in order to prevent erroneous detection, the embodiment of the invention generally is set at 0 to 5 minute with said first scheduled time, and comparatively preferred time is like 5s, 10s, 20s, 30s etc.
In order to judge more accurately; Need guarantee in first scheduled time that begins to cook, can not occur the phenomenon that steam promotes the magnetic valve body; So need detected temperatures in the detection steps A of the embodiment of the invention; When temperature is higher, need cool off a period of time, promote the appearance of valve body situation to get rid of steam, so the detection steps A in the embodiment of the invention specifically can adopt following scheme: carry out following steps in first scheduled time after starting the electric cooker cooking function:
A1) detect current kettle temperature;
A2) during temperature,, then stop heating less than protection at kettle temperature if said sensor detects said valve body away from said steam vent;
A3) when kettle temperature is not less than the protection temperature,, then stop heating if sensor detects said valve body away from said steam vent after stopping to heat the 3rd scheduled time.
Protection temperature in the embodiment of the invention is general selects 70 ℃ to 85 ℃, and wherein 80 ℃ is preferred version, and the protection temperature generally requires to overflow preferred 85 ℃ of temperature in the embodiment of the invention less than overflowing temperature.
In order to be illustrated more clearly in the control method in the embodiment of the invention; Below in conjunction with control flow chart; And be 10s and adopt magneto-dependent sensor and the magnetic valve body is that example describes with first scheduled time; Of Figure 10, the cooking control method that the embodiment of the invention provides can be divided into three kinds of working stages behind the control flow that gets into steam valve: culinary art incipient stage, cooking process stage, culinary art ending phase; And all corresponding a kind of processing mode of corresponding each working stage can be jumped out this flow process after accomplishing the processing in this stage.
Wherein cooking the incipient stage is meant that in first scheduled time of culinary art beginning, just in the preceding 10s of culinary art beginning, its handling process is specifically shown in figure 11, and said method comprises as follows:
1101, the user powers on to electric cooker, and the startup cooking function also picks up counting, and electric cooker can start the measuring ability of steam valve automatically simultaneously, also can be manually booted the measuring ability of steam valve by the user through button.
1102, judge whether magneto-dependent sensor detects the magnetic valve body away from this magneto-dependent sensor; Adopting under the situation of door status switch as magneto-dependent sensor open in usual; Be in closure state if detect door status switch; Represent that then the magnetic valve body is in the state near this door status switch, carry out 1103; Be in off-state if detect door status switch, expression magnetic valve body is in the state away from this door status switch, carries out 1105.
1103, judge whether timing reaches first scheduled time 10s,, then return and carry out 1102 if timing does not reach 10s; If timing reaches 10s, then carry out 1105.
1104, carry out in the 10s after startup owing to above-mentioned detection; General magnetic valve body can be because of the promotion of steam away from magneto-dependent sensor; Do not cover and put in place so can confirm as neglected loading steam valve or pot cover, so need stop heating, and finish the culinary art flow process.Certainly can also otherwise point out the user in this process, as carry out alarm or demonstration stops state heated etc., the embodiment of the invention can also carry out 1105 after carrying out 1104.
1105, jump out the handling process of culinary art incipient stage.
In order to prevent the appearance of erroneous judgement, be in state if detect the magnetic valve body away from this door status switch, can not carry out 1104 earlier, and carry out following 1104-1 process:
1104-1, detect the temperature in the pot, generally the thermal detector through the top carries out temperature detection, and during less than the protection temperature, expression is heated soon for just beginning this moment, then can carry out 1104 in detected temperature; If detect temperature greater than the protection temperature, the food that adds that then expresses possibility at the beginning is high temperature food, heats etc. like the heating boiling water, occurs in order to prevent abnormal conditions, needs to carry out 1104-2.
Protection temperature in the embodiment of the invention can be selected but be not limited to 75 ℃ to 85 ℃.
1104-2, stop to heat 1104 processes of carrying out after the 3rd scheduled time, and need to start heating, the 3rd scheduled time need be shorter than first scheduled time in the present embodiment, can stop according to the selection of first scheduled time heating 5s to 1 minute.In first scheduled time is under the situation of 10s, can select to stop to heat 6s; Be to select to stop to heat 40s or 45s etc. under 1 minute the situation in first scheduled time.
The cooking process stage is meant after culinary art first scheduled time of beginning and accomplishes this process to culinary art in the embodiment of the invention; The processing of this process is primarily aimed at and the possible cooking function of pot that overflows can occur; Only just need carry out this flow process in user's selected to overflow culinary art pattern of pot, for example: the user has selected the pattern of cooking congee, Baoshang pattern etc., just carries out the processing in cooking process stage; If the user has selected the rice pattern, then need cook according to the rice cooking process.Shown in figure 12, the control method in concrete cooking process stage comprises:
1201, judged whether to select the pattern of cooking congee, Baoshang pattern etc. possibly overflow the pot pattern, if then carry out 1202; If selected rice pattern or other non-overflow pan patterns, then carried out 1206.
1202, judge the current time whether be in the 10s that starts cooking function in, if in 10s, then carry out 1206; If beyond 10s, then carry out 1203.
1203, detect a temperature in the pot, generally the thermal detector through the top carries out temperature detection, when overflowing temperature, representes that steam power is bigger under this temperature in detected temperature, possibly overflow, and then carries out 1204; Overflow temperature if detected temperature is not more than, represent that the possibility of overflowing under this temperature is descended very much,, then return and carry out 1203 so need carry out the judgement of steam valve neglected loading.
Overflowing temperature and can select 85 ℃ to 90 ℃ in the embodiment of the invention, for example 85 ℃, 86 ℃, 87 ℃, 88 ℃, 89 ℃, 90 ℃ or the like, generally select 85 ℃ comparatively reasonable.
1204, judge whether magneto-dependent sensor detects the magnetic valve body away from this magneto-dependent sensor; Adopting under the situation of door status switch as magneto-dependent sensor open in usual; Be in closure state if detect door status switch; Represent that then the magnetic valve body is in the state near this door status switch, then continue to carry out 1204; Be in off-state if detect door status switch, expression magnetic valve body is in the state away from this door status switch, carries out 1205.
1205, carry out in the 10s after startup owing to above-mentioned detection; Within 10s, do not detect magnetic valve body principle magneto-dependent sensor; So can confirm not occur steam valve neglected loading or pot cover is the situation about putting in place that covers, and detects the magnetic valve body in this case once more away from magneto-dependent sensor, then can represent the magnetic valve body be steam promotion and away from magneto-dependent sensor; The possibility that excessive pot takes place in the case is bigger; For anti-Spill stopping pan, the present invention need get into the culinary art of anti-overflow pattern in the case, and concrete culinary art flow process sees subsequent descriptions for details.
1206, jump out program.
Below in conjunction with the culinary art of description of drawings anti-overflow, specifically shown in figure 13, the anti-overflow culinary art comprises following process:
1301, after detecting the pot phenomenon that to occur overflowing, just get into the anti-overflow culinary art, so need stop heating earlier.
1302, in order to distinguish the height above sea level that belongs to when this electric cooker uses; The embodiment of the invention can also detect kettle temperature, and this detected temperature generally can embody the boiling point of local water preferably, thereby infers current height above sea level; So that in the subsequent control process, distinguish control to Different Altitude Regions; Certainly, if, then can omit this step in fixedly height above sea level use.
1303, judge whether magneto-dependent sensor detects the magnetic valve body away from this magneto-dependent sensor; Concrete detection mode can adopt above-mentioned scheme employed in figure 11; If detect the magnetic valve body away from this magneto-dependent sensor; Then continue to keep stopping state heated, and carry out 1303 processes again; If detect the magnetic valve body near this magneto-dependent sensor, expression steam reduces, and kettle temperature decreases, and the pot phenomenon that can not occur overflowing then can carry out 1304.
1304, one second scheduled time of time-delay, restart heating then, second scheduled time can be selected but be not limited to 0 to arrive 45s in the embodiment of the invention, generally selected 20s, 30s comparatively reasonable.
When restarting to heat; Can the different ratios of specific heat (heat time heating time and the ratio that stops heat time heating time) that adds heat according to the different choice of height above sea level, can prestore at least two boiling temperatures and the corresponding relation that adds ratio of specific heat at electric cooker in the embodiment of the invention; Add ratio of specific heat with heating than searching target in the corresponding relation at said boiling temperature according to detected temperature then, and in this process, adopt target to add ratio of specific heat and heat.
Generally speaking; The local corresponding boiling point that height above sea level is high more is low more; Its pairing ratio of specific heat that adds also can be higher relatively; In the embodiment of the invention general with height above sea level according to 90 ℃, 95 ℃ and 100 ℃ of differentiations detecting boiling temperature, 90 ℃ of corresponding boiling temperatures add the ratio of specific heat maximum, 100 ℃ of corresponding boiling temperatures to add ratio of specific heat then minimum.
1305, judge whether culinary art is accomplished; Generally can whether arrive total time and judge whether to accomplish culinary art through culinary art; If culinary art is accomplished then got into the insulation pattern, concrete holding temperature can be selected but be not limited to 75 ℃, if culinary art is not accomplished then returned and carry out 1303.
In the embodiment of the invention being applied to electromagnetism heating electric cooker, more than all methods that stop to heat or begin to heat can adopt the mode of turn-offing IGBT or starting IGBT to realize.
After adopting the cooking control method of the electric cooker that the embodiment of the invention provides, can whether cover at the culinary art initial stage steam valve of having judged whether neglected loading exactly or pot cover and put in place, play the effect of safeguard protection; In cooking process, then can carry out the anti-overflow culinary art, reduce the possibility of excessive pot, guarantee the hygiene of electric cooker itself.
After accomplishing culinary art, shown in figure 14 in order to guarantee user's the safety of uncapping, the embodiment of the invention adopts the prompting step of uncapping in the culinary art ending phase, specifically adopts following handling process:
1401, judge whether magneto-dependent sensor detects the magnetic valve body away from this magneto-dependent sensor; And this state reaches scheduled duration continuously; Present embodiment can be set at 1min to 5min with scheduled duration and not wait; Concrete detection mode can adopt above-mentioned scheme employed in figure 11, reaches scheduled duration if detect the magnetic valve body away from this magneto-dependent sensor, then carries out 1402 processes; Otherwise can carry out 1403.
1402, send and allow the prompting of uncapping, specifically can adopt buzzer or display unit to send this prompting.
1403, send and do not allow the prompting of uncapping, specifically can adopt buzzer or display unit to send prompting.
The embodiment of the invention mainly applies to electric cooker, especially need guarantee to have certain humidity in the pot, and the electric cooker that carries out the air bleeding valve installation and measuring.
The above; Be merely the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement 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 claim.
Claims (14)
1. anti-overflow electric cooker of preserving moisture comprises pot body and pot cover, and the steam valve with steam vent is installed on the said pot cover; It is characterized in that; Position corresponding to said steam vent in said steam valve is provided with accommodation space; Be equipped with valve body in the said accommodation space, said valve body is sealed said steam vent subregion under the self gravitation effect, and under the air-flow of discharging from steam vent promotes away from said steam vent;
Said pot cover is provided with the sensor that is connected to control circuit, and said sensor sends to said control circuit with detection signal under the valve body trigger action.
2. the anti-overflow according to claim 1 electric cooker of preserving moisture is characterized in that said sensor is mechanical actuating type sensor, and said valve body triggers said mechanical actuating type sensor under the gravity effect; Perhaps said valve body is the magnetic valve body, and said sensor is a magneto-dependent sensor.
3. electric cooker according to claim 2 is characterized in that, said magnetic valve body is column valve body with magnetic, or ellipsoid shape valve body, or ball valve with magnetic with magnetic.
4. the anti-overflow according to claim 1 electric cooker of preserving moisture is characterized in that said steam valve comprises the bonnet, and the bottom flange of involutory assembling;
Said bottom flange inside is provided with groove, and said steam vent is opened in said groove; Said valve body is located in the accommodation space of said groove formation; Perhaps
Said bottom flange comprises cover plate and valve holder, and said cover plate bottom is provided with perforation, and said valve holder is located at said perforation place; Said valve holder is provided with said steam vent, and said valve body is located in the inner accommodation space of said valve holder.
5. according to claim 1 or the 4 described anti-overflows electric cooker of preserving moisture, it is characterized in that be respectively equipped with the guide frame that is complementary on said accommodation space diapire and the said valve body, said valve body moves along guide frame.
6. the anti-overflow according to claim 1 electric cooker of preserving moisture is characterized in that said pot cover is provided with the Anti-stop cover with air-vent that covers said steam vent; Perhaps said pot cover is provided with the anti-blocking baffle plate that covers said steam vent part exhaust gas region.
7. the cooking control method of any said electric cooker in the claim 1 to 6 is characterized in that said method comprises:
Detect steps A: control circuit if said sensor detects said valve body away from said steam vent, then stops heating in first scheduled time after starting the electric cooker cooking function.
8. the cooking control method of electric cooker according to claim 7 is characterized in that, said steps A comprises: control circuit is carried out following steps in first scheduled time after starting the electric cooker cooking function:
A1) detect current kettle temperature;
A2) during temperature,, then stop heating less than protection at kettle temperature if said sensor detects said valve body away from said steam vent;
A3) when kettle temperature is not less than the protection temperature,, then stop heating if sensor detects said valve body away from said steam vent after stopping to heat the 3rd scheduled time.
9. the cooking control method of any said electric cooker in the claim 1 to 6 is characterized in that said method comprises:
Anti-overflow control step B: if select to have the culinary art of anti-overflow function, after said first scheduled time after starting the electric cooker cooking function, if said sensor detects said valve body away from said steam vent, then control circuit carries out the culinary art of anti-overflow pattern.
10. the cooking control method of electric cooker according to claim 9 is characterized in that, said method also comprises:
Rice cooking step C: if select the rice culinary art, control circuit does not detect under the situation of said valve body away from said steam vent at said sensor, cooks according to the cooking rice pattern.
11. the cooking control method of electric cooker according to claim 9; It is characterized in that; Said step B comprises: if select to have the culinary art of anti-overflow function, control circuit is carried out following steps after said first scheduled time after starting the electric cooker cooking function:
B1) detect current kettle temperature;
B2) in detected temperature when overflowing temperature, if said sensor detects said valve body away from said steam vent, then carry out the culinary art of anti-overflow pattern;
B3) be not more than when overflowing temperature in detected temperature,, then stop heating if said sensor detects said valve body away from said steam vent.
12. the cooking control method according to any described electric cooker in the claim 9 to 11 is characterized in that, the culinary art that said control circuit carries out the anti-overflow pattern comprises:
1) when sensor detects said valve body away from said steam vent, stops heating;
2) when sensor detects said valve body near said steam vent, start heating after second scheduled time of delaying time.
13. the cooking control method according to the said electric cooker of claim 12 is characterized in that, prestores at least two boiling temperatures and the corresponding relation that adds ratio of specific heat in the said electric cooker control circuit;
The culinary art of said anti-overflow pattern also comprises: when sensor detects said valve body away from said steam vent, add ratio of specific heat with heating than searching target in the corresponding relation at said boiling temperature according to detected temperature;
Startup in the culinary art of said anti-overflow pattern is heated to be and adds ratio of specific heat according to said target and heat.
14. the cooking control method according to any described electric cooker in the claim 9 to 11 is characterized in that, said method also comprises:
Uncap and remind step D: after accomplishing culinary art, if said sensor detects said valve body and reaches scheduled duration continuously near said steam vent, control circuit then sends and allows the prompting of uncapping; Otherwise control circuit sends and does not allow the prompting of uncapping.
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| CN201210159344.8A CN102805551B (en) | 2011-11-11 | 2012-05-22 | Anti-overflow moisture-preserving electric cooker and cooking control method thereof |
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| CN201210159344.8A CN102805551B (en) | 2011-11-11 | 2012-05-22 | Anti-overflow moisture-preserving electric cooker and cooking control method thereof |
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| WO2015010535A1 (en) * | 2013-07-25 | 2015-01-29 | 上海新概念电器有限公司 | Novel overflow prevention cooker, overflow prevention and temperature control solution, and implementation method thereof |
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| US11800952B2 (en) | 2017-10-13 | 2023-10-31 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Steam valve for cooking utensil and cooking utensil |
| CN110558838A (en) * | 2018-06-06 | 2019-12-13 | 佛山市顺德区美的电热电器制造有限公司 | anti-overflow device and cooking assembly |
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| CN110572892A (en) * | 2018-06-06 | 2019-12-13 | 佛山市顺德区美的电热电器制造有限公司 | anti-overflow device, heating furnace, and control method and system of heating furnace |
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Address after: Huaiyin District of Ji'nan City, Shandong Province, 250117 US 999 miles Patentee after: Joyoung Company Limited Address before: Xinsha Road, Huaiyin District of Ji'nan city of Shandong Province, No. 12 250118 Patentee before: Joyoung Company Limited |