CN102389254A - Temperature control method of electric heating kitchenware - Google Patents
Temperature control method of electric heating kitchenware Download PDFInfo
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- CN102389254A CN102389254A CN2011102608107A CN201110260810A CN102389254A CN 102389254 A CN102389254 A CN 102389254A CN 2011102608107 A CN2011102608107 A CN 2011102608107A CN 201110260810 A CN201110260810 A CN 201110260810A CN 102389254 A CN102389254 A CN 102389254A
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- 238000005485 electric heating Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000010411 cooking Methods 0.000 claims abstract description 40
- 235000013305 food Nutrition 0.000 claims abstract description 25
- 238000012937 correction Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 235000014347 soups Nutrition 0.000 abstract description 4
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 235000007164 Oryza sativa Nutrition 0.000 abstract 1
- 235000009566 rice Nutrition 0.000 abstract 1
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 16
- 238000001816 cooling Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 235000019628 coolness Nutrition 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 235000021168 barbecue Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The invention discloses a temperature control method of electric heating kitchenware, which comprises the following steps of: starting a heater and coming to a heating temperature rise period, when the temperature of an inner pot reaches first upper limit temperature value A1 of the inner pot or the temperature of the heater reaches first upper limit temperature value B1 of the heater, driving the heater by a controller to reduce heating power or stopping heating, and making the heater come to a constant temperature heating period; when the temperature of the inner pot is reduced to constant temperature target temperature T1 and the temperature of the heater is lower than second upper limit temperature value B2 of the heater, driving the heater by the controller to increase heating power; and when the temperature of the inner pot is increased to constant temperature target temperature T1 or the temperature of the heater reaches second upper limit temperature value B2, driving the heater by the controller to reduce heating power or stopping heating. In this way, the temperature control method not only realizes simple control structure and smaller consumed electric power, but also makes food cooking temperature T0 remain unchanged substantially. Due to the above characteristics, the temperature control method can be applied to the electric heating kitchenware such as general electric rice cooker, soup pot, oven and the like.
Description
Technical field
The present invention relates to cook the electric-heating cooking utensil of usefulness, particularly the temperature-controlled process of electric-heating cooking utensil constant temperature culinary art.
Background technology
In the prior art; In every case relate to electric-heating cooking utensil such as electric cooker, electric pressure cooking saucepan etc.; Usually use temperature sensing device directly to detect interior pot bottom temperature; When the pot bottom temperature is higher than setting value in detected, there is the temperature sensing device action directly to cut off the power supply of heater or cuts off the power supply of heater through the controller of electric-heating cooking utensil.The electric-heating cooking utensil of this structure; Obvious defective is only to control the temperature of inner pot body itself, but temperature that can not control heater, the range of temperature of inner pot body is bigger in cooking process; Usually at ± 10 ℃, thereby the range of temperature of food is also bigger in the pot.From concerning the protection of food nutrition, adopting the different temperature culinary art and keep the constant temperature culinary art for different food is the scheme of comparative optimization.
In the prior art; Also the someone has proposed on heater, to be provided with temperature control device, thereby through the temperature to the temperature of heater control control inner pot body, but often contact the very not good gap that generally exists between the interior pot of electric-heating cooking utensil and the heater; Electric oven particularly; In pot general unsettled be arranged on heater above, also have sizable gap between them, be the thing of comparison difficulty through the temperature of control heater and then the temperature of control inner pot body for this reason.
Summary of the invention
In the course of work of electric-heating cooking utensil, heater is a heater members and interior pot heat sink often.And the heat transmission between them mainly is to be abutted against that touch conduction secondly be to lean on radiation thermal conduction, wherein mainly is to lean on radiation thermal conduction for electric oven.Yet the conduction of heat all needs the time, and promptly in the temperature uphill process of heater, the temperature of inner pot body is not directly to rise synchronously, and vice versa, and the temperature rise between them has the time difference.We find through repetition test, if make the cooking temp of temperature or food of inner pot body more constant and ratio of precision is higher, not only will control the temperature of inner pot body, more want the limit of temperature rise of control heater.
For this reason; The present invention proposes a kind of temperature control method of electric-heating cooking utensil; The heater that said electric-heating cooking utensil comprises interior pot, heat pot in said, detect said in pot temperature interior pot temperature detector, detect the heter temperature detector and the controller of said heter temperature, said in the control circuit of pot temperature detector, heter temperature detector and heater be connected with the said controller signal of telecommunication respectively; It is characterized in that may further comprise the steps:
(1) starts said controller;
(2) selected food cooking temperature T on said electric-heating cooking utensil
0, and then through said controller confirm said in the pot body constant temperature target temperature T of pot
1, T
1=T
0± K; Wherein the K value be according to cooker structure and different culinary art object the correction temperature approach set in advance; Said controller is monitored the operating temperature of said interior pot and said heater simultaneously accordingly through pot temperature detector, heter temperature detector in said;
(3) start said heater and get into the heat temperature raising stage, in said the pot temperature detector detected said in pot temperature of boiler reach in pot first ceiling temperature value A
1The time, said controller drives said heater to be reduced heating power or stops heating, and said heater gets into the heated at constant temperature stage; The pot first ceiling temperature value A in if the temperature of boiler of the detected said interior pot of pot temperature detector does not reach in wherein said
1Before, the temperature of the detected said heater of said heter temperature detector reaches the heater first ceiling temperature value B
1, said controller drives said heater and gets into the compensation heating period, keeps said heater and is being no more than the heater first ceiling temperature value B
1Situation under continue heating;
(4) get into heated at constant temperature after the stage at said heater, in said the temperature of the detected said inner pot body of pot temperature detector be reduced to said in pot constant temperature target temperature T
1, and the temperature of the detected said heater of said heter temperature detector is lower than the heater second ceiling temperature value B
2The time, said controller drives said heater increases heating power; Otherwise said controller drives said heater to be continued to keep heating or stop heating with extremely low power;
Wherein, the said interior pot first ceiling temperature value A
1Pot body constant temperature target temperature T greater than pot in said
1, the said heater first ceiling temperature value B
1Greater than the said heater second ceiling temperature value B
2, also greater than the pot first ceiling temperature value A in said
1
According to technique scheme; The heater that said electric-heating cooking utensil comprises interior pot at least, heat pot in said, detect said in pot temperature interior pot temperature detector, detect the heter temperature detector and the controller of said heter temperature, said in the control circuit of pot temperature detector, heter temperature detector and heater be connected with the said controller signal of telecommunication respectively.So just can utilize said controller to control the unlatching of said heater and the size of cut-out or operating power.Wherein said heater can be through conventional relay switching circuit control, and best mode is to control through ghyristor circuit.Ghyristor circuit not only can make the variable power amplitude of heater sudden change evenly and not can occur, and energy-conservation.
According to technique scheme, internal pot heating process mainly is divided into two working stages, wherein first working stage is the temperature-rise period that cold state starts to hot state, secondly is the constant temperature working stage.
According to technique scheme, before starting heater, can be through selected food cooking temperature T on said controller such as button
0But food cooking temperature T
0And be not equal to said in the pot body constant temperature target temperature T of pot
1(operating temperature of inner pot body); For this reason can be according to the equal characteristics of the specific heat of the concrete structure of electric-heating cooking utensil and cooking food itself such as soup clay pot, electric cooker or electric oven Different products characteristics; In said controller, set different electric-heating cooking utensil correction temperature value K, make T
1=T
0± K; Be T
0Maybe be greater than T
1Also maybe be less than T
1For example when mainly being adopted the water boiling by cooking food, because specific heat of water is greater than the specific heat of pot body, the temperature T of food in the pot
0The temperature T that possibly be higher than inner pot body
1, and when adopting the method for barbecue, the specific heat of air is less than the specific heat of pot body, the temperature T of air in the pot
0Maybe be less than the temperature T of inner pot body
1Secondly, for selected food cooking temperature T
0Method; Can also be that direct cooking methods with various foods directly is printed on said controller in appearance with the mode of scheming to indicate; Use the icon that only only need push correspondence can realize setting, and said controller can be according to these different icon automatic setting food cooking temperature T to temperature
0Or pot body constant temperature target temperature T
1
According to technique scheme, in selected food cooking temperature T
0After, start said controller and drive said heater and start working, make said heater get into the intensification workspace.Because whole electric-heating cooking utensil all is that the heat that said for this reason heater expends is bigger from cold state starting, pot first ceiling temperature value A in the temperature of pot reaches in said
1The time; Said controller just drives said heater to be reduced heating power or stops heating; The waste heat that prevents said heater is too fast and cause the follow-up temperature of said inner pot body soaring too high to the thermal shock of pot in said, and then prevents that the temperature of food from surpassing the food cooking temperature T
0Certain permission amplitude guarantees that said heater and said interior pot relax the entering heated at constant temperature stage.The pot first ceiling temperature value A in if the temperature of boiler of the detected said interior pot of pot temperature detector does not reach in wherein said
1Before, the temperature of the detected said heater of said heter temperature detector reaches the heater first ceiling temperature value B
1, said controller drives said heater and gets into the compensation heating period, keeps said heater and is being no more than the heater first ceiling temperature value B
1Situation under continue heating; The wherein said heater first ceiling temperature value B
1Greater than the pot first ceiling temperature value A in said
1Set the said heater first ceiling temperature value B like this
1Not only can the start-up temperature value of said heater be controlled at and can not damage other parts or the automatically controlled device in the cooker in the safe range, and can let said heater have enough store heat keep guarantee to interior pot additional heat in pot temperature rise to the first ceiling temperature value A
1
The pot first ceiling temperature value A in wherein said
1Constant temperature target temperature T greater than pot in said
1, A
1With T
1Difference can be about 10 ℃; Secondly, though the said interior pot first ceiling temperature value A
1Numerical value be higher than said in the pot body constant temperature target temperature T of pot
1, but since in said heat conduction between pot and the food need the time, and the heat of said inner pot body itself only diffusion also be diffused into other parts for food, for this reason in the cold start-up stage as long as control rational said in pot first ceiling temperature value A
1Numerical value, just can prevent that the temperature of food from surpassing the food cooking temperature T
0Certain permission amplitude is as 1 ℃～3 ℃.
According to technique scheme, after the cold start-up heating process of said heater completion phase I, change the constant temperature working stage over to.Because said heater stops heating or reduced heating power, thereby the temperature of said heater or said inner pot body also progressively reduces.In said the temperature of pot be reduced to said in pot body constant temperature target temperature T of pot
1, and the temperature of said heater is lower than the heater second ceiling temperature value B
2The time, said controller drives said heater increases heating power.When above-mentioned two conditions satisfy simultaneously, drive said heater heat temperature raising for this reason, otherwise still stop heating or keep heating with utmost point low-power.The wherein said heater first ceiling temperature value B
1Greater than the said heater second ceiling temperature value B
2, B
1With B
2Difference can be about 100 ℃; Next said heater first ceiling temperature value B
1The setting of numerical value and choosing, mainly consider said heater and said in hot conductive equilibrium or conductivity between the pot.
According to technique scheme; Get into heated at constant temperature after the stage at said heater; Because when adopting said interior pot temperature detector to detect the temperature of said interior pot; Utilize said heter temperature detector to detect the temperature of said heater again; And then utilize said controller to the heating power of said heater and said in the operating temperature of pot regulates, make said heater carrying out the duty transformation, and make the operating temperature of said heater maintain the said heater second ceiling temperature value B than mode faster
2Near, also make the operating temperature of said interior pot maintain said interior pot constant temperature target temperature T
1Near.So not only control structure is simple, and the electrical power of consumption is smaller and make the cooking temp T of food
0Basically remain unchanged or fluctuation in very little amplitude (± 1 ℃).Methods such as precision that certainly can also be through improving thermometric device itself or improvement thermometric mode further improve the precision of thermostat temperature.
Further technical scheme can also be; Further comprising the steps of; Said controller is given timing to the said heater entering time of heated at constant temperature after the stage, when the constant temperature working time adds up to reach preset value, drives said heater and stops heating entering stopped status fully or get into the heat insulation work state.Certainly can also before and after quitting work, accomplish culinary art work through auditory tone cues.
Because the present invention has These characteristics and advantage, can be applied in the electric-heating cooking utensils such as common electric cooker, soup clay pot, baking oven.
Description of drawings
Fig. 1 uses product structure sketch map of the present invention;
Fig. 2 uses control step sketch map of the present invention.
The specific embodiment
Make further explanation below in conjunction with accompanying drawing to using technical scheme of the present invention.
As shown in Figure 1; A kind of electric-heating cooking utensil; It is a kind of soup clay pot that Baoshang is used that is used for; Pot 1 in comprising, the heater 2 that pot 1 in said is heated, detect said in pot 1 temperature interior pot temperature detector 10, detect the heter temperature detector 20 and the controller 3 of said heater 2 temperature, said in pot temperature detector 10, heter temperature detector 20 be connected with said controller 3 signals of telecommunication respectively with heater 2.Pot 1 is placed on the upper surface of said heater 2 in wherein said, and 2 heats that distribute of said heater mainly pass to said interior pot 1 through direct conduction pattern.Said controller 3 is controlled the unlatching of said heater 2 and the size of cut-out or heating power through ghyristor circuit.
In order to realize that the food in the pot 1 in said is implemented constant temperature culinary art control, adopt the control procedure that may further comprise the steps:
S0: beginning starts power supply and said controller 3;
S1: said controller 3 starts operation, through pressing key assignments food cooking temperature T
0=75 ℃, and then through said controller 3 definite said interior pot 1 constant temperature target temperature T
1=T
0-K; Wherein the K value is that the K value is at 2 ℃～4 ℃ in the present embodiment according to cooker structure and the culinary art object institute correction temperature approach of setting in advance, and wherein measured value is 3 ℃;
S2: whether said controller 3 is lower than the constant temperature target temperature T of said interior pot 1 through the temperature value of the said interior pot 1 of 10 monitorings of pot temperature detector in said
1And whether the temperature of monitoring said heater 2 through said heter temperature detector 20 simultaneously is lower than the heater first ceiling temperature value B
1If when two conditions satisfy simultaneously, then get into next step S3, otherwise the said heater 2 of said controller 3 controls keeps open-circuit condition to wait for said heater 3 coolings; The wherein said heater first ceiling temperature value B
1Value is 220 ℃;
S3: said controller 3 drives said heater 2 and gets into the heat temperature raising stage; The pot first ceiling temperature value A in whether the temperature that pot temperature detector 10 detects said interior pot 1 in said reaches
1If, reaching, the said heater 2 of said controller 3 drivings stops heating or adds said interior pot 1 cooling of hot standby and change next step S4 over to utmost point low-power; Otherwise said controller 3 drives said heater 2 continues heating; The pot first ceiling temperature value A in wherein said
1Value is 95 ℃; The pot first ceiling temperature value A in if the temperature of boiler of pot temperature detector 10 detected said interior pots 1 does not reach in wherein said
1Before, the temperature of said heter temperature detector 20 detected said heaters 2 reaches the heater first ceiling temperature value B
1, said controller drives said heater and gets into the compensation heating period, keeps said heater and is being no more than the heater first ceiling temperature value B
1Situation under continue heating;
S4: said heater 3 gets into the heated at constant temperature stage, and said heater 2 continues to keep open-circuit condition to wait for said heater 2 coolings or adds said interior pot 1 cooling of hot standby with utmost point low-power, and said controller 3 begins the accumulative total constant temperature working time; Whether the temperature that pot temperature detector 10 detects said interior pot 1 in said is reduced to the pot body constant temperature target temperature T of said interior pot
1, and whether the temperature that said heter temperature detector 20 detects said heater 2 is lower than the heater second ceiling temperature value B
2, the wherein said heater second ceiling temperature value B
2Value is 92 ℃; When two conditions satisfy simultaneously, then get into next step S5, otherwise the said heater 2 of said controller 3 controls continues to keep open-circuit condition to wait for said heater 2 coolings or adds said interior pot 1 cooling of hot standby with utmost point low-power;
S5: said controller 3 drives said heater 2 and restarts heating; Whether the temperature that pot temperature detector 10 detects said interior pot 1 in said reaches the constant temperature target temperature T of said interior pot
1, whether the temperature that perhaps said heter temperature detector 20 detects said heater 2 reaches the said heater second ceiling temperature value B
2, when wherein any one condition satisfied, said controller 3 drives said heater 2 to be stopped heating and changes step S4 over to; Otherwise said controller 3 drives said heater 2 continues heating; When the constant temperature cumulative time arrives setting value, change next step S6 over to;
S6: stop culinary art work, the power supply that cuts off said heater automatically gets into stopped status, or gets into the heat insulation work state.
According to technique scheme, can the operating temperature of pot 1 in said be maintained constant temperature target temperature T
1± 1 ℃.Reach 10 ℃ even 20 ℃ of contrasts with the prior art products temperature difference, have tangible progress.
Claims (3)
1. the temperature control method of electric-heating cooking utensil; The heater that said electric-heating cooking utensil comprises interior pot, heat pot in said, detect said in pot temperature interior pot temperature detector, detect the heter temperature detector and the controller of said heter temperature, said in the control circuit of pot temperature detector, heter temperature detector and heater be connected with the said controller signal of telecommunication respectively; It is characterized in that may further comprise the steps:
(1) starts said controller;
(2) selected food cooking temperature T on said electric-heating cooking utensil
0, and then through said controller confirm said in the pot body constant temperature target temperature T of pot
1, T
1=T
0± K; Wherein the K value be according to cooker structure and different culinary art object the correction temperature approach set in advance; Said controller is monitored the operating temperature of said interior pot and said heater simultaneously accordingly through pot temperature detector, heter temperature detector in said;
(3) start said heater and get into the heat temperature raising stage, in said the pot temperature detector detected said in pot temperature of boiler reach in pot first ceiling temperature value A
1The time, said controller drives said heater to be reduced heating power or stops heating, and said heater gets into the heated at constant temperature stage; The pot first ceiling temperature value A in if the temperature of boiler of the detected said interior pot of pot temperature detector does not reach in wherein said
1Before, the temperature of the detected said heater of said heter temperature detector reaches the heater first ceiling temperature value B
1, said controller drives said heater and gets into the compensation heating period, keeps said heater and is being no more than the heater first ceiling temperature value B
1Situation under continue heating;
(4) get into heated at constant temperature after the stage at said heater, in said the temperature of the detected said inner pot body of pot temperature detector be reduced to said in pot constant temperature target temperature T
1, and the temperature of the detected said heater of said heter temperature detector is lower than the heater second ceiling temperature value B
2The time, said controller drives said heater increases heating power; Otherwise said controller drives said heater to be continued to keep heating or stop heating with extremely low power;
Wherein, the said interior pot first ceiling temperature value A
1Pot body constant temperature target temperature T greater than pot in said
1, the said heater first ceiling temperature value B
1Greater than the said heater second ceiling temperature value B
2, also greater than the pot first ceiling temperature value A in said
1
2. the temperature control method of electric-heating cooking utensil according to claim 1 is characterized in that, said controller is through relay circuit or the said heater of SCR control drives.
3. the temperature control method of electric-heating cooking utensil according to claim 1; It is characterized in that; Further comprising the steps of; Said controller is given timing to the said heater entering time of heated at constant temperature after the stage, when the constant temperature working time adds up to reach preset value, drives said heater and stops heating entering stopped status fully.
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|---|---|---|---|
| CN 201110260810 CN102389254B (en) | 2011-09-02 | 2011-09-02 | Temperature control method of electric heating kitchenware |
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|---|---|---|---|
| CN 201110260810 CN102389254B (en) | 2011-09-02 | 2011-09-02 | Temperature control method of electric heating kitchenware |
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| CN102389254A true CN102389254A (en) | 2012-03-28 |
| CN102389254B CN102389254B (en) | 2013-12-25 |
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