CN110677939A - Nonlinear zone constant-temperature heating plate control system and method - Google Patents
Nonlinear zone constant-temperature heating plate control system and method Download PDFInfo
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- CN110677939A CN110677939A CN201910971686.1A CN201910971686A CN110677939A CN 110677939 A CN110677939 A CN 110677939A CN 201910971686 A CN201910971686 A CN 201910971686A CN 110677939 A CN110677939 A CN 110677939A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 287
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 description 8
- 235000012771 pancakes Nutrition 0.000 description 8
- 238000012958 reprocessing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 235000019692 hotdogs Nutrition 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
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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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
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- Baking, Grill, Roasting (AREA)
Abstract
The invention provides a nonlinear zone constant-temperature heating plate control system and method, wherein the system comprises a heating plate, a temperature control device and a temperature acquisition module; the temperature acquisition module is respectively connected with the heating plate and the temperature control device; the heating plate is connected with the temperature control device; wherein: the heating plate consists of a plurality of heating areas; the temperature acquisition modules are distributed in the plurality of heating areas, and transmit the acquired temperature values of the plurality of heating areas to the temperature control device; and the temperature control device is used for controlling the temperature of each area of the heating plate. The invention can realize the zone nonlinear heating of the heating plate in a rotating state. The temperature of each area of the heating plate in a rotating state is reasonably controlled through accurate temperature control. On the one hand, the article can be ensured not to be heated excessively, and on the other hand, the heating performance is prevented from being reduced.
Description
Technical Field
The invention relates to the field of automatic control, in particular to a nonlinear zone constant-temperature heating plate control system and method.
Background
The traditional heating plate heating wires mostly adopt linear heating, and the upper limit of the temperature is a fixed value. This approach has drawbacks:
1. the heat energy utilization rate is low.
2. After a long time use, the efficiency of the heating wire in the heating plate is reduced.
3. When the traditional heating plate is in a rotating state, the accurate temperature control of the heating wire cannot be realized.
4. The traditional heating plate can not keep constant temperature after reaching the set temperature, but continuously heats at the highest temperature. The material on the heating plate can be burnt after being heated for a long time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a nonlinear zone constant-temperature heating plate control system and method. The technical scheme of the invention is as follows:
a nonlinear zone constant-temperature heating plate control method comprises the following steps:
s1: the method comprises the following steps of setting a nonlinear zone constant-temperature heating plate control system, wherein the nonlinear zone constant-temperature heating plate control system comprises a temperature acquisition module, a heating plate and a temperature control device; the temperature acquisition module is respectively connected with the heating plate and the temperature control device; the heating plate is connected with the temperature control device; wherein: the heating plate consists of a plurality of heating areas;
the temperature acquisition modules are distributed in the plurality of heating areas, and transmit the acquired temperature values of the plurality of heating areas to the temperature control device;
the temperature control device is used for controlling the temperature of each area of the heating plate;
s2: the temperature acquisition module acquires the temperature of each heating area of the heating plate;
s3: the temperature acquisition module uploads the acquired data to the temperature control device;
s4: the temperature control device judges whether the temperature of each heating area is within a preset temperature range or not; if not, the temperature control device adjusts the temperature value of the heating area with abnormal temperature, and then the next step is carried out; if yes, directly carrying out the next step;
s5: the temperature control device controls the temperature of each heating area to be kept within a preset temperature range;
s6: the temperature control device judges whether the heating plate needs to be switched to the working state or not, and different working states correspond to different preset temperatures; if yes, return to step S2; if not, the process returns to step S5.
Optionally, in step S1, the heating plate includes a griddle, and a plurality of sets of heating wires movably connected to the griddle; each group of heating wires corresponds to one heating area; the griddle may be rotatable relative to the heating wire.
Optionally, the temperature collection module is disposed on the heating wire and/or the griddle and/or an article on the griddle.
Optionally, the temperature control device is connected to the heating wires, and controls the heating time and the heating power of each group of heating wires to control the temperature of the heating area corresponding to the group of heating wires.
Optionally, the temperature control device controls the temperature of the heating area corresponding to the group of heating wires based on the heating efficiency of the heating wires and the heat conduction loss of the griddle.
Optionally, the step S4 further includes: if the temperature value of the heating area is higher or lower than the preset temperature range, the temperature control device reduces or improves the heating efficiency of the corresponding heating area.
Optionally, the heating plate may correspond to a plurality of working states, and each working state corresponds to different working time and preset temperature range; and the temperature control device judges whether the heating plate is switched to the working state or not according to the working time of the working state.
A nonlinear zone constant-temperature heating plate control system comprises a heating plate, a temperature control device and a temperature acquisition module; the temperature acquisition module is respectively connected with the heating plate and the temperature control device; the heating plate is connected with the temperature control device; wherein:
the heating plate consists of a plurality of heating areas;
the temperature acquisition modules are distributed in the plurality of heating areas, and transmit the acquired temperature values of the plurality of heating areas to the temperature control device;
and the temperature control device is used for controlling the temperature of each area of the heating plate.
Optionally, the heating plate comprises a griddle, and a plurality of groups of heating wires movably connected with the griddle; each group of heating wires corresponds to one heating area; the griddle may be rotatable relative to the heating wire.
Optionally, the temperature collection module is disposed on the heating wire and/or the griddle and/or an article on the griddle.
Optionally, the temperature control device is connected to the heating wires, and controls the heating time and the heating power of each group of heating wires to control the temperature of the heating area corresponding to the group of heating wires.
Optionally, the temperature control device controls the temperature of the heating area corresponding to the group of heating wires based on the heating efficiency of the heating wires and the heat conduction loss of the griddle.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a nonlinear zone constant-temperature heating plate control method which can realize zone nonlinear heating of a heating plate in a rotating state. The temperature of each area of the heating plate in a rotating state is reasonably controlled through accurate temperature control. On the one hand, the article can be ensured not to be heated excessively, and on the other hand, the heating performance is prevented from being reduced.
2. The invention realizes the nonlinear temperature control by collecting the temperature data of different areas. The temperature of the heating wire is properly adjusted according to factors such as temperature change condition, griddle heat conduction loss, heating wire temperature rise and fall curves and the like, so that constant temperature control is realized.
3. Improve the utilization rate of heat energy
4. The uniform heating of the articles on the heating plate is ensured.
5. The power during heating can be adjusted as required.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of a non-linear zoned constant temperature hotplate control system according to an embodiment of the invention;
FIG. 2 is a schematic view of the zoning of a heating disk in accordance with an embodiment of the invention;
FIG. 3 is a heating profile showing the temperature change of a heating disk according to an embodiment of the present invention;
fig. 4 is a flow chart of a method for controlling a non-linear zoned constant temperature heating disk in accordance with an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention can be applied to equipment requiring accurate temperature control. Such as a heating plate that requires thermostatic control. The present embodiment will be described by taking a heating plate of a general pancake fruit machine as an example.
Referring to fig. 1, a nonlinear zone constant temperature heating plate control system includes a heating plate, a temperature control device, and a temperature acquisition module; the temperature acquisition module is respectively connected with the heating plate and the temperature control device; the heating plate is connected with the temperature control device; wherein:
the heating plate consists of a plurality of heating areas;
the temperature acquisition modules are distributed in the plurality of heating areas, and transmit the acquired temperature values of the plurality of heating areas to the temperature control device;
and the temperature control device is used for controlling the temperature of each area of the heating plate.
The heating plate is installed in a manner including, but not limited to, as shown in fig. 1, wherein the heating plate is integrally divided into two parts, i.e., a heating wire and a griddle. The griddle is movably connected with a plurality of groups of heating wires; each group of heating wires corresponds to one heating area; the griddle may be rotatable relative to the heating wire.
The temperature acquisition module is arranged on the heating wire and/or the griddle and/or the article on the griddle.
The temperature control device is connected with the heating wire.
The temperature control device achieves the effect of accurately controlling the temperature of the heating area corresponding to each group of heating wires by accurately controlling the heating time and the heating power of each group of heating wires based on the heating efficiency of the heating wires and the heat conduction loss of the griddle.
Wherein, the heating efficiency of the heating wire is a parameter which is taken when a heating wire product is purchased and is a known value. Because the heating wire is heated faster than the griddle, the griddle is required to reach the same temperature as the heating wire and an additional part of the heat is provided by the heating wire, and the additional part of the heat is the heat conduction loss of the griddle. The temperature control device controls the heating wire to heat the griddle based on the two data, so that the griddle reaches the target preset temperature.
In this embodiment, as shown in figure 2, the heating plate is divided into three zones, which are divided by the surface of the griddle. Zone 1 is the central part of the griddle and zones 2 and 3 are symmetrically arranged and can rotate around zone 1.
The temperature acquisition module can be a temperature sensor, an infrared camera or other devices capable of detecting temperature. An appropriate number of temperature acquisition modules may be installed according to the three zones in the zone schematic of fig. 2. This example exemplifies the installation of three temperature detection devices. The temperature of a heating wire in the heating plate, the temperature of a griddle or the surface temperature of a pancake fruit in a rotating state are collected through three temperature collecting modules. Taking the surface temperature of the griddle as an example, once the surface temperature of a certain area of the griddle is detected to reach 100-106 ℃, the heating efficiency of the heating wire corresponding to the area is reduced to achieve the constant temperature effect, otherwise, when the surface temperature is detected to be lower than 100 ℃, the heating efficiency of the heating wire of the area is improved to achieve 100 ℃.
Referring to fig. 4, a nonlinear zone constant temperature heating plate control method includes the following steps:
s1: the nonlinear zone constant-temperature heating disc control system is arranged and comprises a temperature acquisition module, a heating disc and a temperature control device; the temperature acquisition module is respectively connected with the heating plate and the temperature control device; the heating plate is connected with the temperature control device; wherein: the heating plate consists of a plurality of heating areas;
the temperature acquisition modules are distributed in the plurality of heating areas, and transmit the acquired temperature values of the plurality of heating areas to the temperature control device;
and the temperature control device is used for controlling the temperature of each area of the heating plate.
S2: the temperature acquisition module acquires the temperature of each heating area of the heating plate;
s3: the temperature acquisition module uploads the acquired data to the temperature control device;
s4: the temperature control device judges whether the temperature of each heating area is within a preset temperature range or not; if not, the temperature control device adjusts the temperature value of the heating area with abnormal temperature, and then the next step is carried out; if yes, directly carrying out the next step;
s5: the temperature control device controls the temperature of each heating area to be kept within a preset temperature range;
s6: the temperature control device judges whether the heating plate needs to be switched to the working state or not, and different working states correspond to different preset temperatures; if yes, return to step S2; if not, the process returns to step S5.
In step S1, the heating plate includes a griddle and a plurality of sets of heating wires movably connected to the griddle; each group of heating wires corresponds to one heating area; the griddle may be rotatable relative to the heating wire. The temperature acquisition module is arranged on the heating wire and/or the griddle and/or the article on the griddle.
The temperature control device is connected with the heating wire.
The temperature control device achieves the effect of accurately controlling the temperature of the heating area corresponding to each group of heating wires by accurately controlling the heating time and the heating power of each group of heating wires based on the heating efficiency of the heating wires and the heat conduction loss of the griddle.
Wherein, the heating efficiency of the heating wire is a parameter which is taken when a heating wire product is purchased and is a known value. Because the heating wire is heated faster than the griddle, the griddle is required to reach the same temperature as the heating wire and an additional part of the heat is provided by the heating wire, and the additional part of the heat is the heat conduction loss of the griddle. The temperature control device controls the heating wire to heat the griddle based on the two data, so that the griddle reaches the target preset temperature.
The step S4 further includes: if the temperature value of the heating area is higher or lower than the preset temperature range, the temperature control device reduces or improves the heating efficiency of the corresponding heating area.
The heating plate can correspond to a plurality of working states, and each working state corresponds to different working time and preset temperature range; and the temperature control device judges whether the heating plate is switched to the working state or not according to the time of the working state. The working time of the different working states is determined according to the time for heating the articles on the heating plate, and the invention does not limit the specific time value.
Referring to fig. 3, in this embodiment, the heating plate corresponds to four working states, which are respectively: standby state, heating state, medium temperature heating state and reprocessing state. The working time and the preset temperature range of the four states are different. In this embodiment, the preset temperature ranges of the respective working states are all examples, and the invention does not limit the preset temperature ranges. Wherein:
the standby state refers to that before making battercake fruits, the temperature control device respectively preheats the temperature of each griddle area to 100-106 ℃. The operating time of the standby state is assumed to be T0. The area position and surface temperature information of the griddle simulation at this time are shown in the standby state of FIG. 3. The temperature reaching the surface of the griddle is affected by the heating efficiency of the heating wire and the heat conduction loss of the griddle itself, so that the time required for the griddle to reach 100 ℃ is longer than the time required for the heating wire to reach 100 ℃. As shown in the griddle and location information in figure 3, different areas of the griddle are heated separately for each area when the temperature is in the standby state. After the time T0, the temperature control device determines that the heating pan is to be switched to the next operating state, i.e., the heating state.
The preset temperature of the heating state is 100 ℃, the preset temperature range is up and down floated at 100 ℃, the floating amount is determined according to the actual situation, and the invention does not limit the preset temperature. The operation time of the heating state is assumed to be T1. While in the heated state, the pancake fruit is placed on the surface of the griddle. The position and the surface temperature of the area of the griddle at this time are shown in the heating state of fig. 3, and the positions of the area 2 and the area 3 of the griddle at this time are changed because the whole heating plate is in the rotating state. Zone 1 temperature 104 ℃ means that the temperature of the griddle was less than 100 ℃ in the previous state, so the temperature control device alone re-heats the zone 1 temperature. After the time reaches T1, the temperature control device determines that the heating plate is to be switched to the next operating state, i.e., the medium-temperature heating state.
The preset temperature of the medium-temperature heating state is 60 ℃, the preset temperature range is up and down floated at 60 ℃, the floating amount is determined according to the actual situation, and the invention does not limit the preset temperature. The operating time in the medium-temperature heating state is assumed to be T2. After the heating of the pancake fruits is finished, the whole heating plate enters a heat preservation state, and the temperature of the pancake fruits is reduced to 60 ℃. The position and surface temperature of the area of the griddle at this time are shown in the incubation state of FIG. 3. At this time, the positions of the area 2 and the area 3 of the griddle are changed because the heating plate is integrally in a rotating state. Because the raw material is poured into the area 1 when making the pancake fruits, and then the area 1 uniformly covers all the areas, the heating time of the area 1 is slightly longer than that of other areas. The region 1 first reduces the heating efficiency of the heating wire to lower the temperature. So that zone 1 is at a lower temperature than zones 2 and 3 in the keep warm state of figure 3. When the surface temperature of a certain area of the griddle is higher than 60 ℃, the heating efficiency of the heating wire corresponding to the area is reduced to achieve the constant temperature effect, otherwise, when the surface temperature is detected to be lower than 60 ℃, the heating efficiency of the heating wire of the area is improved to achieve 60 ℃. After the time T2, the temperature control device determines that the heating pan is to be switched to the next operating state, i.e., the rework state.
The preset temperature of the reprocessing state is 80 ℃, the preset temperature range is up and down 80 ℃, the floating amount is determined according to the actual situation, and the invention does not limit the reprocessing state. The operating time in the reworked state is assumed to be T3. Being in a reworked state means: the temperature of other foods, such as eggs and hot dogs which are frequently found in pancake fruits, needs to be heated to a preset temperature, and after the foods are heated, the griddle is set to be in a heat preservation state. In the reprocessing state, the area position and the surface temperature of the griddle are shown as the reprocessing state in figure 3, and the positions of the area 2 and the area 3 of the griddle are changed because the heating plate is integrally in a rotating state. After the time T3, the temperature control device determines that the heating pan is to be switched to the next operating state. The next operating state can be started again from the standby state.
The heating time curve and the positions of the regions after rotation are shown in fig. 3, the enabling time of the heating wire in the method of the embodiment: resulting from the heating efficiency of the heating wire, the heat conduction losses of the griddle.
In this embodiment, the surface temperatures of three places (a heating wire, a griddle, and a pancake) are obtained to determine which areas need different operations (heating, cooling, and heat preservation), so that the objects on the heating plate are not burnt.
This embodiment reaches the effect of accurate accuse temperature through the heating efficiency of control heater strip. The heating efficiency of the heating wire and the rotation speed of the griddle can be automatically controlled by a machine, and can also be manually operated.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (12)
1. A nonlinear zone constant-temperature heating plate control method is characterized by comprising the following steps:
s1: the method comprises the following steps of setting a nonlinear zone constant-temperature heating plate control system, wherein the nonlinear zone constant-temperature heating plate control system comprises a temperature acquisition module, a heating plate and a temperature control device; the temperature acquisition module is respectively connected with the heating plate and the temperature control device; the heating plate is connected with the temperature control device; wherein: the heating plate consists of a plurality of heating areas;
the temperature acquisition modules are distributed in the plurality of heating areas, and transmit the acquired temperature values of the plurality of heating areas to the temperature control device;
the temperature control device is used for controlling the temperature of each area of the heating plate;
s2: the temperature acquisition module acquires the temperature of each heating area of the heating plate;
s3: the temperature acquisition module uploads the acquired data to the temperature control device;
s4: the temperature control device judges whether the temperature of each heating area is within a preset temperature range or not; if not, the temperature control device adjusts the temperature value of the heating area with abnormal temperature, and then the next step is carried out; if yes, directly carrying out the next step;
s5: the temperature control device controls the temperature of each heating area to be kept within a preset temperature range;
s6: the temperature control device judges whether the heating plate needs to be switched to the working state or not, and different working states correspond to different preset temperatures; if yes, return to step S2; if not, the process returns to step S5.
2. The method of claim 1, wherein in step S1, the heating plate comprises a griddle, a plurality of sets of heating wires movably connected to the griddle; each group of heating wires corresponds to one heating area; the griddle may be rotatable relative to the heating wire.
3. The method of claim 2, wherein the temperature acquisition module is disposed on a heating wire and/or a griddle and/or an item on a griddle.
4. The method of claim 2, wherein the temperature control device is connected to the heating wires, and the heating time and the heating power of each group of heating wires are controlled to control the temperature of the heating area corresponding to the group of heating wires.
5. The method of claim 4, wherein the temperature control device controls the temperature of the heating zones corresponding to the set of heating wires based on the heating efficiency of the heating wires and the heat conduction loss of the griddle itself.
6. The method of claim 1, wherein the step S4 further comprises: if the temperature value of the heating area is higher or lower than the preset temperature range, the temperature control device reduces or improves the heating efficiency of the corresponding heating area.
7. The method of claim 1, wherein the heater plate is capable of corresponding to a plurality of operating conditions, each operating condition corresponding to a different operating time and preset temperature range; and the temperature control device judges whether the heating plate is switched to the working state or not according to the working time of the working state.
8. A nonlinear zone constant-temperature heating plate control system is characterized by comprising a heating plate, a temperature control device and a temperature acquisition module; the temperature acquisition module is respectively connected with the heating plate and the temperature control device; the heating plate is connected with the temperature control device; wherein:
the heating plate consists of a plurality of heating areas;
the temperature acquisition modules are distributed in the plurality of heating areas, and transmit the acquired temperature values of the plurality of heating areas to the temperature control device;
and the temperature control device is used for controlling the temperature of each area of the heating plate.
9. The system of claim 8, wherein the heating plate comprises a griddle, a plurality of sets of heating wires movably connected to the griddle; each group of heating wires corresponds to one heating area; the griddle may be rotatable relative to the heating wire.
10. The system of claim 9, wherein the temperature acquisition module is disposed on a heating wire and/or a griddle and/or an item on a griddle.
11. The system of claim 9, wherein the temperature control device is connected to the heating wires, and controls the temperature of the heating zones corresponding to each group of heating wires by controlling the heating time and heating power of the group of heating wires.
12. The system of claim 11, wherein the temperature control means controls the temperature of the heating zones corresponding to the set of heater strips based on the heating efficiency of the heater strips and the heat conduction losses of the griddle itself.
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