CN107889286B - Electric cooker and control method and controller thereof - Google Patents
Electric cooker and control method and controller thereof Download PDFInfo
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- CN107889286B CN107889286B CN201711078308.8A CN201711078308A CN107889286B CN 107889286 B CN107889286 B CN 107889286B CN 201711078308 A CN201711078308 A CN 201711078308A CN 107889286 B CN107889286 B CN 107889286B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
- H05B1/0261—For cooking of food
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/004—Cooking-vessels with integral electrical heating means
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
- H05B1/0261—For cooking of food
- H05B1/0263—Ovens
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- Electric Stoves And Ranges (AREA)
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Abstract
The invention relates to the technical field of kitchen appliances, in particular to an electric cooker and a control method and a controller thereof. The invention provides a control method of an electric cooker, wherein at least two heating elements are respectively arranged on the upper part and the lower part of a cavity of the electric cooker, the cavity is divided into corresponding number of heating areas according to the number of the heating elements, and the control method comprises the following steps: detecting the temperature of each heating area, and calculating the average temperature in the cavity according to the detected temperature; calculating the difference value between the average temperature and the preset temperature, and judging whether the difference value is smaller than or equal to a preset deviation value; if yes, starting the heating element at the heating area with lower temperature; if not, starting a circulating working mode of the heating element; judging whether the running time reaches the preset heating time, if so, ending the heating operation; if not, returning to the detection step. The operation mode of each heating element is controlled according to the temperature distribution in the cavity, and more uniform food heating can be effectively realized.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to an electric cooker and a control method and a controller thereof.
Background
With the increasing importance of people on healthy life, the requirements on household appliances are also higher and higher. For the simplest and most cost-effective electric cooking devices, such as electric ovens, food is generally heated by means of heat radiation.
Among the commonly used heating elements, there are metal heating tubes, quartz heating tubes, halogen heating tubes, etc. Because the heat of the heating element is transferred around in a radiation mode, the closer to the heating tube, the higher the temperature. When the food is closer to the heating element, the heating speed is fast but the uniformity is poor, and the food is burnt in some positions and is not cooked in some positions; when the food is located a long distance from the heating element, the coloring uniformity of the food is better, but the cooking speed is slower. Therefore, the uniformity of the temperature in the cavity of the electric oven has great influence on the baking result, and the non-uniformity of the temperature can cause food to be uncooked and cooked unevenly and have obvious color difference.
In addition, there are times when the door is opened to move or to view the food during baking of the food in the electric oven. The door opening can cause a large amount of heat to be dissipated, so that the temperature of a space close to the door is lower than that in the cavity; in addition, the temperature of the cavity is uniform due to different structures, heat preservation, materials and the like of the cavity in all directions. In addition, because the food shape is irregular, the thickness is different, the temperature uniformity of the cavity can be influenced, the color difference is obvious, and the cooking effect of the food is further seriously influenced.
Disclosure of Invention
Technical problem to be solved
The first object of the present invention is: the control method of the electric cooker has the advantages of being rapid, directional in heating function and capable of achieving more uniform food heating, and solving the problem that the existing electric cooker is poor in food cooking effect due to nonuniform heating.
The second object of the present invention is: the utility model provides an electric cooking ware that has quick, directional heating function and can realize more even food heating to solve the inhomogeneous food cooking effect poor problem that causes of heating of current electric cooking ware.
The third object of the present invention is: the controller implanted with the control method of the electric cooker is provided to solve the problem of poor food cooking effect caused by uneven heating of the existing electric cooker.
(II) technical scheme
In order to solve the technical problem, the invention provides a control method of an electric cooker, wherein at least two heating elements are respectively arranged on the upper part and the lower part of a cavity of the electric cooker, the cavity is divided into corresponding number of heating areas according to the number of the heating elements, and the control method comprises the following steps:
a detection step of detecting the temperature of each of the heating regions;
a first calculation step of calculating an average temperature in a cavity of the electric cooker according to the temperature of each heating area;
a second calculation step of calculating a difference value between an average temperature in a cavity of the electric cooker and a preset temperature;
a first judgment step of judging whether the difference value is less than or equal to a preset deviation value; if so, starting the heating element at the heating area with lower temperature, and not operating the heating element at the heating area with higher temperature, so that directional heating is realized, food can be uniformly colored, and the uniformity of the cavity temperature of the electric cooker is favorably ensured; if not, starting a circulating working mode of the heating element, and adjusting the circulating period of the circulating working mode of the heating element according to the current temperature in the cavity to reach a preset temperature value, so as to be beneficial to realizing further uniform distribution of the cavity temperature;
a second judgment step of judging whether the running time of the heating element at the heating area with lower starting temperature or the running time of the heating element circulation working mode reaches the preset heating time, if so, ending the heating operation; if not, returning to the detection step.
By adopting the control method of the electric cooker, the operation modes of the heating elements can be flexibly adjusted according to the temperature values of the heating areas obtained by current detection, so that the cavity temperature in the electric cooker is more uniform, the food heating effect is further improved, and the problems of inconsistent food color difference and inconsistent cooking degree are effectively solved.
According to an embodiment of the present invention, between the detecting step and the first calculating step, further comprising: and a comparison step, wherein the temperature of each heating area is detected and arranged from low to high. Therefore, the running sequence of each heating element can be conveniently judged subsequently and directional heating can be realized according to the arranged result.
According to an embodiment of the present invention, the heating element at the heating region with the lower opening temperature includes: according to the arrangement result in the comparison step, starting the heating element at the heating area with the lowest temperature to realize directional heating, so as to be beneficial to uniformly coloring food; the operation of one or more heating elements can be flexibly adjusted according to the local heating requirement of the food.
According to one embodiment of the invention, the heating element cycling mode of operation comprises:
a third calculation step of calculating the operation time of each heating element according to the cavity structure of the electric cooker and the current temperature of each heating area;
a sequence arrangement step, wherein each heating element is started according to a preset execution sequence or the heating elements of the corresponding heating area are started according to the sequence from low temperature to high temperature according to the arrangement result in the comparison step;
executing, wherein each heating element alternately works according to corresponding running time and execution sequence;
wherein the order of the third calculating step and the ordering step is interchangeable. The execution sequence of each heating element can be reasonably selected according to actual requirements, and each heating element alternately operates according to the calculated operation time, so that all parts of the cavity of the electric cooker can be effectively heated, the uniform distribution of the cavity temperature is realized, and the food heating effect is improved; and each heating element runs alternately, so that the problem of overlarge working efficiency is avoided.
According to an embodiment of the present invention, the cavity structure according to the electric cooker comprises: and distributing the cavity structures of the electric cooking device according to the number of the heating elements. And calculating the starting and stopping interval time of each heating element based on the cycle period of the heating element cycle working mode and the running time of each heating element and the number of the distributed cavity structures of the electric cooking device.
According to an embodiment of the present invention, before the detecting step, the control method further includes an electric cooker starting step of: when the electric cooker is started and starts to cook, each heating element runs at the maximum power, so that the temperature in the cavity of the electric cooker quickly approaches the preset temperature, the heating time is saved, and the user experience is improved.
According to one embodiment of the present invention, the heat generating elements include a first heat generating element, a second heat generating element, a third heat generating element, a fourth heat generating element, a fifth heat generating element, and a sixth heat generating element, the six heat generating elements dividing a cavity of the electric cooker into six heating areas; wherein, first heating element, second heating element, third heating element set up at even interval in proper order the cavity top of electric cooking ware, fourth heating element, fifth heating element and sixth heating element set up at even interval in proper order the cavity bottom of electric cooking ware for every heating region size in the cavity is approximately equal, and is even with the distribution temperature that does benefit to in realizing the cavity.
According to an embodiment of the invention, the heating device further comprises six temperature detection devices, one temperature detection device is correspondingly arranged in one heating area, the temperature of the corresponding heating area is detected by the temperature detection devices, and the temperature detection devices and the heating areas are arranged in one-to-one correspondence, so that the temperature measurement accuracy is improved, and data support is provided for subsequently controlling the operation mode of each heating element.
The invention also provides a controller, and the controller is implanted with the control method of the electric cooker, and the controller is used for realizing the operation control of each heating element, so that the temperature in the cavity of the electric cooker is uniform, and further, the better food heating effect is realized.
The invention also provides an electric cooker which comprises a cavity, a door body, an outer cover, at least four heating elements, four temperature detection devices and the controller; the at least two heating elements are arranged at the top in the cavity, the at least two heating elements are arranged at the bottom in the cavity, and the temperature detection devices and the heating elements are arranged in a one-to-one correspondence manner; the surface of cavity is equipped with control panel, control panel with the controller is connected. The application provides an electric cooking ware, simple structure, reasonable in design surveys the temperature of the heating region that corresponds through the temperature-detecting device accuracy to through the controller according to the temperature that records, combine to predetermine the temperature, carry out reasonable regulation to each heating element's operating duration and operational mode, in order to realize an electric cooking ware of even heating.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
the invention provides a control method of an electric cooker, wherein at least two heating elements are respectively arranged on the upper part and the lower part of a cavity of the electric cooker, the cavity is divided into corresponding heating areas according to the number of the heating elements, and the control method comprises the following steps: a detection step, detecting the temperature of each heating area; a first calculation step of calculating an average temperature in a cavity of the electric cooker according to the temperature of each heating area; a second calculation step of calculating a difference value between the average temperature in the cavity of the electric cooker and a preset temperature; a first judgment step of judging whether the difference value is less than or equal to a preset deviation value; if so, starting the heating element at the heating area with lower temperature, and not operating the heating element at the heating area with higher temperature, so that the directional heating is realized, the food can be uniformly colored, and the uniformity of the cavity temperature of the electric cooker is favorably ensured; if not, starting a circulating working mode of the heating element, and adjusting the circulating period of the circulating working mode of the heating element according to the current temperature in the cavity to reach a preset temperature value, so as to be beneficial to realizing further uniform distribution of the cavity temperature; a second judgment step of judging whether the running time of the heating element at the heating area with lower starting temperature or the running time of the heating element circulation working mode reaches the preset heating time or not, if so, ending the heating operation; if not, returning to the detection step. By adopting the control method of the electric cooking device, the operation modes of the heating elements can be controlled according to the temperature distribution in the cavity, so that the electric cooking device is suitable for cavities with different structural types, more uniform food heating can be effectively realized, the problems of obvious food color difference and inconsistent cooking caused by nonuniform heating are solved, and the user experience is improved.
Drawings
Fig. 1 is a block flow diagram of a control method of an electric cooker according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an electric cooking device according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an electric cooking device including six heating elements according to a second embodiment of the present invention;
fig. 4 is a schematic structural view of an electric cooking device including seven heating elements according to a third embodiment of the present invention.
In the figure: 1: an electric oven; 2: a housing; 3: a control panel; 4: a door body; 5: a cavity; 101: a first heat generating element; 102: a second heating element; 103: a third heating element; 104: a fourth heating element; 105: a fifth heating element; 106: a sixth heating element; a: a first heating zone; b: a second heating zone; c: a third heating zone; d: a fourth heating zone; e: fifth hot zone; f: a sixth heating zone; 201: a first heating element; 202: a second heating element; 203: a third heating element; 204: a fourth heating element; 205: a fifth heating element; 206: a sixth heating element; 207: a seventh heating element.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example one
As shown in fig. 1, an embodiment of the present invention provides a control method for an electric cooking device, where at least two heating elements are respectively disposed above and below a cavity 5 of the electric cooking device, the cavity 5 is divided into corresponding number of heating regions according to the number of the heating elements, and the control method includes the following steps: a detection step, detecting the temperature of each heating area; a first calculation step of calculating an average temperature in the cavity 5 of the electric cooker according to the temperature of each heating area; a second calculation step of calculating a difference between the average temperature in the cavity 5 of the electric cooker and a preset temperature; a first judgment step of judging whether the difference value is less than or equal to a preset deviation value; if yes, starting the heating element at the heating area with lower temperature; if not, starting a circulating working mode of the heating element; a second judgment step of judging whether the running time of the heating element at the heating area with lower starting temperature or the running time of the heating element circulation working mode reaches the preset heating time or not, if so, ending the heating operation; if not, returning to the detection step. Wherein, predetermine the temperature and predetermine the heating time, can carry out reasonable setting according to the kind and the size of the food of actual culinary art.
In the embodiment, one heating element corresponds to one heating area, so that the temperature of the corresponding heating area can be adjusted by adjusting the operation mode of the heating element, the temperature adjusting effect is good, the precision is better, and the uniform heating of food is favorably improved; when the difference value between the average temperature in the cavity 5 of the electric cooker and the preset temperature is less than or equal to the preset deviation value, the heating elements at the heating areas with lower temperature are started, namely when the average temperature of the cavity 5 is stabilized near the preset temperature, only the heating tube corresponding to the minimum temperature area is started to work, so that the directional heating is realized, the temperature consistency of each heating area can be ensured, the uniformity of the temperature of the cavity 5 is ensured, and the food is uniformly cooked and colored; when the difference value between the average temperature in the cavity 5 of the electric cooker and the preset temperature is larger than the preset deviation value, the heating element circulating work mode is started, so that the average temperature in the cavity 5 of the electric cooker can be stabilized near the preset temperature while uniform heating is realized.
Therefore, by adopting the control method of the electric cooking device, the operation modes of the heating elements can be controlled according to the temperature distribution in the cavity 5, so that the electric cooking device is suitable for the cavities 5 with different structural types, more uniform food heating can be effectively realized, the problems of obvious food color difference and inconsistent cooking caused by nonuniform heating are solved, and the user experience is improved.
In addition, due to the difference of the shape and the size of the food, the heat quantity required by each part of the food is different, for example, more heat quantity needs to be absorbed in certain thick places, and through the directional heating function, the food can be adaptively adjusted according to the actual shape and the size of the food, so that the cooking effect of the food is ensured.
Preferably, between the detecting step and the first calculating step, the method further comprises: and a comparison step, wherein the temperature of each heating area is detected and arranged from low to high.
In this embodiment, the heating elements corresponding to the heating regions are sequentially arranged according to the temperatures of the heating regions, so that the operation of the heating elements with lower temperature and the operation of each heating element in the heating element circulation working mode can be flexibly adjusted subsequently, the response time is saved, the working efficiency is improved, and the improvement of the user experience is facilitated.
Preferably, the heating element at the heating region with the lower opening temperature includes: and according to the arrangement result in the comparison step, starting the heating element at the heating area with the lowest temperature.
In this embodiment, in order to realize the uniform coloring and the degree of cooking of food, the heating element at the heating region with the lowest temperature is turned on, so as to realize the directional heating and improve the cooking effect of food. It should be noted that, in addition to the heating element at the heating region with the lowest starting temperature, heating elements at a plurality of heating regions with lower average temperatures may be started, such as the heating element with the lowest starting temperature and the heating element with the next lowest starting temperature or the heating element with the lowest starting temperature, the heating element with the next lowest starting temperature and the heating element with the next lowest starting temperature; so as to be beneficial to realizing uniform temperature distribution in the cavity 5 of the electric cooker. The running time of the heating elements at each heating area and the number of the started heating elements can be reasonably set according to the temperature of each corresponding heating area.
Preferably, the heating element cycle operation mode comprises: a third calculation step, calculating the operation time of each heating element according to the cavity structure of the electric cooker and the current temperature of each heating area; a sequence arrangement step, wherein each heating element is started according to a preset execution sequence or the heating elements of the corresponding heating area are started according to the sequence from low temperature to high temperature according to the arrangement result in the comparison step; executing, wherein each heating element alternately works according to the corresponding running time and the execution sequence; the sequence of the third calculation step and the sequence arrangement step can be interchanged, and flexible setting and adjustment can be performed according to actual needs.
In this embodiment, when the difference between the average temperature in the cavity 5 of the electric cooker and the preset temperature is greater than the preset deviation value, that is, the average temperature of the cavity 5 in the electric cooker is relatively low, the heating element cycle operation mode is started, that is, each heating element performs the alternate operation, wherein the operation time of each heating element is calculated according to the cavity structure of the electric cooker and the temperature distribution in the cavity 5.
Particularly, each heating element can alternately operate according to a preset execution sequence, the preset execution sequence can continuously and alternately circulate according to the sequence of 'heating element one-heating element two-heating element three-heating element four', or can continuously and alternately circulate according to the sequence of 'heating element one-heating element three-heating element two-heating element four', and the preset execution sequence of each heating element can be reasonably set according to needs.
Besides, each heating element can be sequentially started according to the temperature of the heating area from low to high, so that the temperature uniformity in the cavity of the electric cooker can be quickly realized, and the cooking effect of food is improved. In particular, a reasonable alternating cycle sequence can be selected according to actual implementation conditions.
The mode that a plurality of heating elements are used for alternately operating can avoid the problem that the heating elements have overlarge working power at the same time, so as to ensure the long-term, effective and reliable operation of the electric cooker.
Preferably, the cavity structure according to the electric cooker comprises: and distributing the cavity structures of the electric cooking device according to the number of the heating elements.
In this embodiment, the start-stop interval time of each heating element is calculated based on the cycle period of the heating element cycle operation mode and the operation time of each heating element, and by combining the number of the distributed cavity structures of the electric cooking device.
In particular, in addition to the above, the cavity structure of the electric cooker may further include the spatial size and the orientation of the divided heating area. When the electric cooker is an electric oven, the position of the heating area, for example, the position close to the door body, is more heat loss, and more appropriate heat compensation can be considered, for example, the running time of the heating element at the position is increased, so that more excellent cavity temperature distribution is achieved.
Preferably, before the detecting step, the control method further includes an electric cooker starting step of: when the electric cooker is started and starts to cook, each heating element operates at maximum power, so that the temperature in the cavity 5 of the electric cooker quickly approaches the preset temperature. When the temperature in the cavity 5 of the electric cooker is near the preset temperature, the directional heating mode or the heating element circulating working mode is selected by judging whether the difference value between the average temperature in the cavity 5 of the electric cooker and the preset temperature is less than or equal to the preset deviation value.
In the present embodiment, the operation is started after the cooking time and temperature are set to the electric cooker. In the initial heating stage, each heating element can be operated at the maximum power, so that the temperature in the cavity 5 of the electric cooker quickly approaches the preset temperature, the heating time is shortened as far as possible, the cooking efficiency is improved, and the user experience is good.
The invention also provides a controller, and the controller is implanted with the control method of the electric cooker, and the controller is used for realizing the operation control of each heating element, so that the temperature in the cavity of the electric cooker is uniform, and further, the better food heating effect is realized.
As shown in fig. 2, the invention further provides an electric cooking device, which comprises a cavity 5, a door 4, an outer cover 2, at least four heating elements, four temperature detection devices and a controller in the technical scheme; the at least two heating elements are arranged at the top in the cavity 5, the at least two heating elements are arranged at the bottom in the cavity 5, and the temperature detection devices and the heating elements are arranged in a one-to-one correspondence manner; the surface of cavity 5 is equipped with control panel 3, and control panel 3 is connected with the controller, simple structure, reasonable in design, low in production cost, and easily control.
Preferably, the temperature detection device is an infrared probe or a temperature sensor. In this embodiment, the temperature detection device may be an infrared probe, or may also be a temperature sensor, and is used to detect the temperature value of each heating area. The infrared probe and the temperature sensor have the characteristics of higher sensitivity, quick response and good temperature measurement effect, and can effectively ensure that the whole electric cooker can operate effectively and reliably for a long time. Meanwhile, the infrared probe and the temperature sensor have relatively low power consumption, low price and strong economical efficiency.
Preferably, the heating element is a heating tube. In the embodiment, the heating tube is selected as the heating element, and the heating tube can intensively generate a large amount of heat energy in a very small range, so that the electric cooker has a quick heating function and can quickly reach a preset temperature in the initial heating stage. The heating tube has high temperature control precision, is easy to realize automatic control and is convenient to flexibly adjust. Besides, the heating tube is low in price, beneficial to reducing the production cost of the whole electric cooker and high in economical efficiency.
In this embodiment, the electric cooking device is an electric oven 1, the electric oven 1 includes a cavity 5 having an opening, and a door 4 for covering the opening of the cavity 5, and the cavity 5 is provided with an outer cover 2, so as to improve the aesthetic property while avoiding heat loss. Be equipped with four at least heating element in the cavity 5 for heat cavity 5, wherein, the top of cavity 5 is located to two at least heating element, and cavity 5's bottom is located to two at least heating element, adopts the mode of a plurality of heating element at cavity 5 spatial distribution, makes each part homoenergetic of cavity 5 effectively heat, does benefit to and realizes cavity 5 temperature evenly distributed. Meanwhile, the controller implanted with the control method of the electric cooker realizes uniform coloring of food through the directional heating mode of the plurality of heating elements, and realizes uniform temperature distribution of the cavity 5 by combining the circulating working mode of the plurality of heating elements so as to improve the cooking effect of the food.
In addition to the above, the electric cooker may also be a microwave oven, in which a heating element is provided to achieve a more uniform food heating effect, similar to the electric oven 1, wherein the heating element should be understood as having heat radiation in operation.
Example two
As shown in fig. 3, the present invention further provides an electric cooking device, which includes a cavity 5, a door 4, an outer cover 2, and a controller implanted with the control method of the electric cooking device, wherein six heating elements are arranged in the cavity 5, and include a first heating element 101, a second heating element 102, a third heating element 103, a fourth heating element 104, a fifth heating element 105, and a sixth heating element 106, and the six heating elements divide the cavity 5 of the electric cooking device into six heating regions; the first heating element 101, the second heating element 102 and the third heating element 103 are sequentially and uniformly arranged at the top of the cavity 5 of the electric cooking device at intervals, and the fourth heating element 104, the fifth heating element 105 and the sixth heating element 106 are sequentially and uniformly arranged at the bottom of the cavity 5 of the electric cooking device at intervals.
In the present embodiment, six heating elements, that is, a first heating element 101, a second heating element 102, a third heating element 103, a fourth heating element 104, a fifth heating element 105 and a sixth heating element 106, are provided in the cavity 5 of the electric cooker, and the cavity 5 is divided into six heating areas, that is, a heating area a, a heating area B, a heating area C, a heating area D, a heating area E and a heating area F, according to the six heating elements; the first heating element 101, the second heating element 102 and the third heating element 103 are arranged at the top of the cavity 5 in parallel and at uniform intervals, and the fourth heating element 104, the fifth heating element 105 and the sixth heating element 106 are arranged at the bottom of the cavity 5 in parallel and at uniform intervals, so that the space size of each heating area is approximately the same as much as possible, and the temperature uniformity of the cavity 5 in the electric cooker is facilitated.
Preferably, the control method of the electric cooker provided by the present application further includes six temperature detection devices, one temperature detection device is correspondingly disposed in one heating area, and the temperature detection devices are used for detecting temperature values of the corresponding heating areas, and the specific control method includes:
the preset heating time and the preset cooking temperature t0 are set, and the electric cooker starts to work.
A detection step, namely acquiring temperature values of six heating areas through six temperature detection devices respectively;
in this example, the temperature of the heating zone a was t1, the temperature of the heating zone B was t2, the temperature of the heating zone C was t3, the temperature of the heating zone D was t4, the temperature of the heating zone E was t5, and the temperature of the heating zone F was t 6.
A first calculation step of calculating the average temperature in the cavity 5 of the electric cooker according to the temperature values of the six heating areas;
in the present embodiment, the average temperature inside the cavity 5 of the electric cooker
At the same time, the minimum temperature t of the six heating zones is determinedmin＝min{t1,t2,.....t6}。
In particular, when the number of heating elements is n, and correspondingly, the number of heating zones is n, the average temperature inside the cavity 5 of the electric cooking device
Obtaining a minimum temperature t of n heating zonesmin＝min{t1,t2,.....tn}。
A second calculation step of calculating the difference between the average temperature in the cavity 5 of the electric cooker and the preset temperature; a first judgment step of judging whether the difference value is less than or equal to a preset deviation value; if yes, starting the heating element at the heating area with lower temperature; if not, starting a circulating working mode of the heating element;
in this embodiment, theComparing the temperature average value t with a preset temperature t0, and if | t-t0| is less than or equal to e, turning on tminHeating elements in corresponding areas are used for realizing fixed-point heating and ensuring the uniformity of the temperature of the cavity 5 of the electric cooker; if the difference value of the two exceeds the deviation value e, the heating element circulating working mode is started, namely, each heating element alternately operates, and the effect of uniform heating is achieved while the preset temperature value is reached.
Calculating the operation time of each heating element according to the cavity structure of the electric cooker and the current temperature of each heating area, and calculating the cycle period of the heating element cycle working mode according to the operation time of each heating element;
if the average temperature value t is far lower than the preset temperature t0, the higher the temperature of the chamber 5 needs to be maintained, the higher the required power is, and thus the shorter the cycle period of the thermal device in the cyclic operation mode. The length of the cycle period is adjusted by controlling the length of the interval of starting and stopping each heating element.
Setting a cycle period T, firstly setting the cycle period T to be equal to the initial cycle period T0, and then reasonably adjusting according to the actual temperature in the cavity; in each cycle, the operation time of the first heating element 101 is T1, the operation time of the second heating element 102 is T2, the operation time of the third heating element 103 is T3, the operation time of the fourth heating element 104 is T4, the operation time of the fifth heating element 105 is T5, the operation time of the sixth heating element 106 is T6, and the interval time of each heating element is T, then:
specifically, when the number of heating elements is n, the interval time t of each heating element is calculated by:
the heating power is increased as the cycle period T is smaller, and the heating power is decreased as the cycle period T is larger. The heating power is changed by adjusting the size of the cycle period T, thereby controlling the temperature of the chamber 5.
Wherein, each heating element carries out alternate operation work according to the interval time t calculated by the formula; in this embodiment, the start-stop interval of each heating element is controlled according to the interval time t of each heating element calculated by the above formula, so as to control the temperature in the cavity 5 of the electric cooker.
A second judgment step, namely judging whether the actual operation time of the circulating working mode of the heating element reaches the preset heating time or not, and if so, ending the heating operation; if not, returning to the detection step.
In this embodiment, if the actual operation time T of the heating element cyclic operation mode reaches the preset heating time, the heating operation of the heating element is ended; and if the actual operation time T of the heating element in the circulating operation mode does not reach the preset heating time, returning to the step I and heating again.
Other technical solutions are the same as those in the first embodiment, and are not described again to avoid repetition.
EXAMPLE III
As shown in fig. 4, the present invention further provides an electric cooking device, which includes a cavity 5, a door 4, an outer cover 2, and a controller implanted with the control method of the electric cooking device, wherein seven heating elements and seven temperature detection devices are arranged in the cavity 5, the cavity 5 is divided into seven heating regions by the seven heating elements, and one temperature detection device is arranged corresponding to one heating element and is used for detecting the temperature of the heating region corresponding to the heating element. The seven heating elements are respectively a first heating element 201, a second heating element 202, a third heating element 203, a fourth heating element 204, a fifth heating element 205, a sixth heating element 206 and a seventh heating element 207, wherein the first heating element 201 to the fourth heating element 204 are arranged at the bottom of the cavity 5 in parallel, the fifth heating element 205 to the seventh heating element 207 are arranged at the top of the cavity 5 in parallel, and all parts of the cavity 5 can be effectively heated by the spatial distribution of the plurality of heating elements in the cavity 5.
It should be noted that the number of the heating elements may be 5, 8 or more than 8 in addition to 6 or 7, and it is only necessary to satisfy that at least two heating elements are disposed on the upper and lower portions of the cavity 5, and the number and the arrangement mode of the specific heating elements may be reasonably selected and set according to actual implementation conditions.
Other technical solutions are the same as those in the second embodiment, and are not described again to avoid repetition.
In summary, the present invention provides a control method of an electric cooking device, in which at least two heating elements are respectively disposed above and below a cavity of the electric cooking device, the cavity is divided into a corresponding number of heating regions according to the number of the heating elements, and the control method includes the following steps: a detection step, detecting the temperature of each heating area; a first calculation step of calculating an average temperature in a cavity of the electric cooker according to the temperature of each heating area; a second calculation step of calculating a difference value between the average temperature in the cavity of the electric cooker and a preset temperature; a first judgment step of judging whether the difference value is less than or equal to a preset deviation value; if so, starting the heating element at the heating area with lower temperature, and not operating the heating element at the heating area with higher temperature, so that the directional heating is realized, the food can be uniformly colored, and the uniformity of the cavity temperature of the electric cooker is favorably ensured; if not, starting a circulating working mode of the heating element, and adjusting the circulating period of the circulating working mode of the heating element according to the current temperature in the cavity to reach a preset temperature value, so as to be beneficial to realizing further uniform distribution of the cavity temperature; a second judgment step of judging whether the running time of the heating element at the heating area with lower starting temperature or the running time of the heating element circulation working mode reaches the preset heating time or not, if so, ending the heating operation; if not, returning to the detection step. By adopting the control method of the electric cooking device, the operation modes of the heating elements can be controlled according to the temperature distribution in the cavity, so that the electric cooking device is suitable for cavities with different structural types, more uniform food heating can be effectively realized, the problems of obvious food color difference and inconsistent cooking caused by nonuniform heating are solved, and the user experience is improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A control method of an electric cooker is characterized in that at least two heating elements are respectively arranged on the upper part and the lower part of a cavity of the electric cooker, the cavity is divided into heating areas with corresponding number according to the number of the heating elements, and the control method comprises the following steps:
a detection step of detecting the temperature of each of the heating regions;
a first calculation step of calculating an average temperature in a cavity of the electric cooker according to the temperature of each heating area;
a second calculation step of calculating a difference value between an average temperature in a cavity of the electric cooker and a preset temperature;
a first judgment step of judging whether the difference value is less than or equal to a preset deviation value; if so, starting the heating element at the heating area with lower temperature; if not, starting a circulating working mode of the heating element;
a second judgment step of judging whether the running time of the heating element at the heating area with lower starting temperature or the running time of the heating element circulation working mode reaches the preset heating time, if so, ending the heating operation; if not, returning to the detection step.
2. The method of controlling an electric cooker according to claim 1, further comprising, between the detecting step and the first calculating step:
and a comparison step, wherein the temperature of each heating area is detected and arranged from low to high.
3. The control method of the electric cooker as claimed in claim 2, wherein the heating element at the heating area having the lower turn-on temperature comprises: and starting the heating element at the heating area with the lowest temperature according to the arrangement result in the comparison step.
4. The control method of the electric cooker as claimed in claim 2, wherein the heating element cycle operation mode includes:
a third calculation step of calculating the operation time of each heating element according to the cavity structure of the electric cooker and the current temperature of each heating area;
a sequence arrangement step, wherein each heating element is started according to a preset execution sequence or the heating elements of the corresponding heating area are started according to the sequence from low temperature to high temperature according to the arrangement result in the comparison step;
executing, wherein each heating element alternately works according to corresponding running time and execution sequence;
wherein the order of the third calculating step and the ordering step is interchangeable.
5. The method of controlling an electric cooker as claimed in claim 4, wherein the cavity structure according to the electric cooker comprises: and distributing the cavity structures of the electric cooking device according to the number of the heating elements.
6. The control method of the electric cooker as claimed in claim 1, wherein before the detecting step, the control method further comprises an electric cooker starting step of:
when the electric cooker is started and starts to cook, each heating element operates at the maximum power, so that the temperature in the cavity of the electric cooker quickly approaches the preset temperature.
7. The method of controlling an electric cooker as claimed in claim 1, wherein the heat generating elements include a first heat generating element, a second heat generating element, a third heat generating element, a fourth heat generating element, a fifth heat generating element and a sixth heat generating element, the six heat generating elements dividing the cavity of the electric cooker into six heating areas; the first heating element, the second heating element and the third heating element are sequentially and uniformly arranged at the top of the cavity of the electric cooker at intervals, and the fourth heating element, the fifth heating element and the sixth heating element are sequentially and uniformly arranged at the bottom of the cavity of the electric cooker at intervals.
8. The control method of the electric cooker as claimed in claim 7, further comprising six temperature detecting means, one temperature detecting means being provided for one heating region.
9. A controller embedded with a control method of the electric cooker according to any one of claims 1 to 8.
10. An electric cooker, which is characterized by comprising a cavity, a door body, an outer cover, at least four heating elements, four temperature detection devices and a controller according to claim 9; the at least two heating elements are arranged at the top in the cavity, the at least two heating elements are arranged at the bottom in the cavity, and the temperature detection devices and the heating elements are arranged in a one-to-one correspondence manner; the surface of cavity is equipped with control panel, control panel with the controller is connected.
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| CN108664445B (en) * | 2018-04-16 | 2022-11-25 | 深圳和而泰小家电智能科技有限公司 | Temperature calculation method and electronic equipment |
| CN108420322B (en) * | 2018-05-22 | 2021-06-18 | 广东美的厨房电器制造有限公司 | Control method of cooking equipment and cooking equipment |
| CN109363528B (en) * | 2018-11-22 | 2021-05-04 | 厦门芯阳科技股份有限公司 | Control method of baking tray of smokeless machine and baking tray |
| CN110025228B (en) * | 2019-03-29 | 2021-06-15 | 广东万和电气有限公司 | Electric oven and temperature control method thereof |
| CN111513583A (en) * | 2020-04-30 | 2020-08-11 | 广东美的厨房电器制造有限公司 | Control method of cooking device, server and storage medium |
| CN113760023B (en) * | 2021-11-09 | 2022-03-15 | 伟龙食品有限公司 | Food processing data processing method and system and electronic equipment |
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