CN207037500U - A kind of control device - Google Patents
A kind of control device Download PDFInfo
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- CN207037500U CN207037500U CN201621399223.0U CN201621399223U CN207037500U CN 207037500 U CN207037500 U CN 207037500U CN 201621399223 U CN201621399223 U CN 201621399223U CN 207037500 U CN207037500 U CN 207037500U
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- 238000010438 heat treatment Methods 0.000 claims abstract description 255
- 230000002159 abnormal effect Effects 0.000 claims description 102
- 238000012790 confirmation Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 23
- 230000005856 abnormality Effects 0.000 description 9
- 238000013329 compounding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010411 cooking Methods 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011017 operating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 239000011185 multilayer composite material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model discloses a kind of control device；Device is applied in Electromagnetic Heating product, and device includes：Temperature sensor, controller and heating coil；Wherein, the controller is connected with the heating coil and the temperature sensor；The temperature sensor is arranged on the middle part of the heating coil and the edge part of the heating coil.So as to improve the precision of temperature detection, and avoid heating uneven or heat transfer difference phenomenon.
Description
Technical Field
The utility model relates to a domestic appliance technique especially relates to a controlling means.
Background
In the present household electrical appliance product, the power of the electromagnetic heating product is greatly influenced by the distance between the heating coil panel and the inner pot, and in the present electromagnetic heating product, the pot bottom part is only provided with 1 temperature detection device, which can not solve the problem of the large difference of the distance between each point of the bottom part of the inner pot and the heating coil panel caused by the assembly inclination of the heating coil panel or the placement inclination of the inner pot, thereby causing the uneven heating of each part of the bottom of the pot in the heating process.
In addition, the inner pan of the electromagnetic heating product usually uses multilayer composite materials, and due to process problems, certain differences exist in the compounding of each part of the inner pan inevitably in the material compounding process, for example, gaps exist in partial areas in the compounding process, so that different heat transfer rates can be generated due to the compounding differences in the heating process, and the heat transfer of each point at the bottom of the pan is different.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, an embodiment of the present invention is expected to provide a control device, which can improve the accuracy of temperature detection and avoid the phenomenon of uneven heating or heat transfer difference.
The technical scheme of the utility model is realized like this:
in a first aspect, an embodiment of the present invention provides a control device, the device is applied to an electromagnetic heating product, the device includes: a temperature sensor, a controller and a heating coil; wherein the controller is connected with the heating coil and the temperature sensor;
the temperature sensors are disposed at a middle portion of the heating coil and at an edge portion of the heating coil.
In the above scheme, the number of the temperature sensors is at least two.
In the scheme, the number of the temperature sensors is 3; wherein, the first temperature sensor is arranged in the middle of the heating coil; the second temperature sensor and the third temperature sensor are provided at an edge portion of the heating coil.
In the above scheme, the second temperature sensor and the third temperature sensor are arranged on any diameter of the heating coil and are respectively arranged on two sides of the circle center of the heating coil.
In the scheme, the number of the temperature controllers is 4; wherein, the first temperature sensor is arranged at the middle part of the heating coil; the second temperature sensor, the third temperature sensor and the fourth temperature sensor are provided at an edge portion of the heating coil.
In the above scheme, the central angles formed by any two of the second temperature sensor, the third temperature sensor and the fourth temperature sensor and the center of the heating coil are all the same.
In the above scheme, the controller is arranged on a shell of the electromagnetic heating product, is connected with the heating coil through a control bus, and sends a control instruction to the heating coil through the control bus; wherein the control instruction is used for controlling the working state of the heating coil.
In the above scheme, the controller is configured to acquire temperature values of the middle portion and the edge portion of the heating coil through the temperature sensor according to a preset acquisition strategy;
determining that the heating coil is in an abnormal temperature state according to a difference value between the temperature values of the middle part and the edge part of the heating coil and a preset judgment strategy;
counting the occurrence frequency of the heating coil in the temperature abnormal state according to a preset statistical strategy;
and when the occurrence frequency of the temperature abnormal state meets a preset confirmation condition, confirming that the electromagnetic heating product is in the abnormal state, and controlling the working state of the heating coil according to the abnormal state of the heating coil.
In the above scheme, when the electromagnetic heating product is in an abnormal state; and ending the working state of the electromagnetic heating product or informing the abnormal state of the electromagnetic heating product.
In a second aspect, an embodiment of the present invention provides an electromagnetic heating product, which includes the control device described in any one of the first aspect.
The embodiment of the utility model provides a controlling means sets up a plurality of temperature sensor through the different positions at heating coil, confirms the unusual phenomenon of temperature according to a plurality of temperature sensor's detected value afterwards. The temperature detection precision can be improved, and the phenomenon of uneven heating or heat transfer difference is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a control device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a temperature sensor according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another temperature sensor according to an embodiment of the present invention
Fig. 4 is a schematic structural diagram of another control device according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an electromagnetic heating product according to an embodiment of the present invention;
fig. 6 is a schematic view of a work flow of a control device according to an embodiment of the present invention.
Detailed Description
In order to illustrate embodiments of the present invention or technical solutions in the prior art more clearly, the following description will be made in conjunction with the accompanying drawings in embodiments of the present invention to describe the technical solutions in the embodiments of the present invention clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
Referring to fig. 1, a control device 10 according to an embodiment of the present invention is shown, where the device 10 may be applied to an electromagnetic heating product, and the device 10 may include: a temperature sensor 101, a controller 102, and a heating coil 103; wherein,
the controller 102 is connected to the heating coil 103 and the temperature sensor 101;
the temperature sensor 101 is disposed at the center of the heating coil 103 and at the edge of the heating coil 103.
Preferably, the number of the temperature sensors 101 is at least two.
In a preferred implementation, as shown in fig. 2, the number of temperature sensors 101 is 3; wherein, the first temperature sensor 1011A is arranged at the middle part of the heating coil 103; the second temperature sensor 1012A and the third temperature sensor 1013A are provided at an edge portion of the heating coil 103.
Further, in order to be able to collect temperature values at different positions of the heating coil, a second temperature sensor 1012A and a third temperature sensor 1013A are disposed on any diameter of the heating coil 103 and on both sides of the center of the heating coil 103.
In another preferred implementation, as shown in fig. 3, the number of the temperature sensors 101 is 4;
wherein the first temperature sensor 1011B is disposed at the middle of the heating coil 103; a second temperature sensor 1012B, a third temperature sensor 1013B, and a fourth temperature sensor 1014 are provided at an edge portion of the heating coil 103.
Furthermore, in order to acquire temperature values at different positions of the heating coil, central angles formed by any two temperature sensors of the second temperature sensor 1012B, the third temperature sensor 1013B and the fourth temperature sensor 1014 and the center of the heating coil 103 are the same.
Illustratively, the controller 102 is disposed at the housing of the electromagnetic heating product, is connected to the heating coil 103 through a control bus, and sends a control command to the heating coil 103 through the control bus; wherein the control instruction is used for controlling the working state of the heating coil.
For the foregoing technical solution in the embodiment, it should be noted that the controller 102 is configured to acquire temperature values of the middle portion and the edge portion of the heating coil 103 through the temperature sensor 101 according to a preset acquisition strategy;
determining that the heating coil 103 is in an abnormal temperature state according to a difference value between the temperature values of the middle part and the edge part of the heating coil 103 and a preset judgment strategy;
counting the occurrence frequency of the heating coil 103 in the temperature abnormal state according to a preset statistical strategy;
and when the occurrence frequency of the temperature abnormal state meets a preset confirmation condition, confirming that the electromagnetic heating product is in the abnormal state, and controlling the working state of the heating coil 103 according to the abnormal state of the heating coil 103.
Illustratively, the controller 102 is specifically configured to:
the temperature values of the temperature sensor 101 are collected at the same point in time.
Further, the controller 102 is specifically configured to:
when the difference value between the temperature value of each edge portion of the heating coil 103 and the temperature value of the middle portion of the heating coil 103 is smaller than a preset first temperature threshold value, determining that the heating coil 103 is in a normal temperature state;
when the difference between the temperature value of at least one edge portion of the heating coil 103 and the temperature value of the central portion of the heating coil 103 is greater than the first temperature threshold value, it is determined that the heating coil 103 is in a temperature abnormal state.
In the specific implementation process, taking the example that one temperature sensor is arranged in the middle of the heating coil 103 and N temperature sensors are arranged at the edge parts of the heating coil 103, the difference between the temperature value of each edge part of the heating coil 103 and the temperature value of the middle part of the heating coil 103 is △ T1＝|T0-T1|，△T2＝|T0-T2|，……，△TN＝|T0-TNThen, when △ T0，△T1，……，△TNNone of which exceeds the preset first temperature threshold Tth1The controller 102 determines that the heating coil 103 is in a temperature normal state, wherein a first temperature threshold Tth1The value range of (A) is preferably 1. ltoreq. Tth1≦ 20, and the controller 102 takes the average value of the temperature values of all the edge portions of the heating coil 103 and the temperature value of the central portion of the heating coil 103 as the actually detected temperature value T, that is:
for example, referring to fig. 4, the controller 102 further includes an abnormal number counter 1021, and the controller 102 is specifically configured to:
when the heating coil 103 is in an abnormal temperature state, closing the heating coil 103, adding one to an abnormal frequency counter, after a preset first time period, opening the heating coil 103, collecting temperature values of the middle part and the edge part of the heating coil 103 according to a preset collection strategy, and determining that the heating coil 103 is in the abnormal temperature state according to a difference value between the temperature values of the middle part and the edge part of the heating coil 103 and the preset judgment strategy;
when the heating coil 103 is in a normal temperature state, the abnormal number counter is cleared.
In a specific implementation process, the controller 102 may preset an abnormal number counter with a default initial value of zero for the number of times that the heating coil 103 is in the abnormal temperature state, when the heating coil 103 is in the abnormal temperature state, the controller 102 turns off the heating coil 103, records the abnormal number m of times of temperature as 1 through the abnormal number counter, and waits for a preset first period △ t1Then reheating, wherein, the time is less than or equal to 5 seconds and is less than or equal to △ t1The temperature values of the middle part and the edge part of the heating coil 103 are collected by the controller 102 according to the preset collection strategy, the process that the heating coil 103 is in the abnormal temperature state is determined according to the difference value between the temperature values of the middle part and the edge part of the heating coil 103 and the preset judgment strategy, and if the heating coil 103 is in the abnormal temperature state again, the controller 102 records the abnormal temperature number m to be 2 through an abnormal number counter; if the heating coil 103 is in the temperature normal state, the controller 102 clears the temperature abnormality test record m of the abnormality number counter to 0, and so on.
Further, the controller 102 is configured to:
when the abnormal time counter exceeds a preset abnormal time threshold value, determining that the electromagnetic heating product is in an abnormal state;
and ending the working state of the electromagnetic heating product or informing the abnormal state of the electromagnetic heating product.
In the specific implementation process, when the temperature abnormal times m recorded by the abnormal time counter is more than or equal to k, wherein k is more than or equal to 1, the controller 102 confirms that the heating/heat transfer of the electromagnetic heating product is abnormal, the cooking process of the electromagnetic heating product can be finished, and the heating/heat transfer abnormality of the product can also be prompted through a display device or a sound prompting device or a wireless signal.
Illustratively, the controller 102 is specifically configured to:
and collecting temperature values of the middle part and the edge part of the heating coil 103 every a preset second time period.
In a specific implementation, the preset second time period is △ t2Wherein, 1 second is less than or equal to △ t210 minutes or less, the temperature sensor 1011 arranged at the middle part of the heating coil 103 is arranged at intervals of △ t2The temperatures collected were: t is01，T02，……，T0iWherein i represents the number of second time periods; accordingly, the temperatures acquired by the N temperature sensors 1012 provided at the edge portion of the heating coil 103 are: t is11，T12，……，T1i；T21，T12，……，T2i；……；TN1，TN2，……，TNi。
Further, the controller 102 is specifically configured to:
acquiring temperature change values of the middle part and the edge part of the heating coil 103 in each second time period;
when the difference value between the temperature change value of each edge portion of the heating coil 103 and the temperature change value of the middle portion of the heating coil 103 is smaller than a preset second temperature threshold value, determining that the heating coil 103 is in a normal temperature state;
when the difference between the temperature change value of at least one edge portion of the heating coil 103 and the temperature change value of the central portion of the heating coil 103 is greater than the second temperature threshold value, it is determined that the heating coil 103 is in a temperature abnormal state.
On toolIn the implementation process, △ t is the first one2For example, the temperature change value of the central portion of the heating coil 103 is △ T0(1)＝T01-T02The temperature change value of each edge portion of the heating coil 103 is △ T1(1)＝T11-T12，△T2(1)＝T21-T22，……，△TN(1)＝TN1-TN2(ii) a Then, the difference between the temperature change value of each edge portion of the heating coil 103 and the temperature change value of the central portion of the heating coil 103 is: t is01(1)＝△T0(1)-△T1(1)，T02(1)＝△T0(1)-△T2(1)，……，T0N(1)＝△T0(1)-△TN(1) (ii) a Then when T01(1)，T02(1)，……，T0N(1) None of which exceeds the preset second temperature threshold Tth2The controller 102 determines that the heating coil 103 is in a temperature normal state, wherein a first temperature threshold Tth1The value range of (A) is preferably 1. ltoreq. Tth220 or less, and taking the average value of the temperature values of all the edge portions of the heating coil 103 and the temperature value of the middle portion of the heating coil 103 as the actually detected temperature value T, namely:when T is01(1)，T02(1)，……，T0N(1) None of which exceeds the preset second temperature threshold Tth2The controller 102 determines that the heating coil 103 is in a temperature abnormal state.
The present embodiment provides a control apparatus 10 by providing a plurality of temperature sensors at different positions of a heating coil and then determining a temperature abnormality in accordance with the detected values of the plurality of temperature sensors. The temperature detection precision can be improved, and the phenomenon of uneven heating or heat transfer difference is avoided.
Example two
Based on the same technical concept as that of the foregoing embodiment, referring to fig. 5, an electromagnetic heating product 50 provided by an embodiment of the present invention is shown, where the electromagnetic heating product 50 includes the control device 10 according to any of the foregoing embodiments.
EXAMPLE III
Based on the same technical concept of the foregoing embodiment, referring to fig. 6, it shows an operating method of a control device provided by an embodiment of the present invention, and the method may include:
s601: acquiring temperature values of the middle part and the edge part of the heating coil according to a preset acquisition strategy;
s602: determining that the heating coil is in an abnormal temperature state according to a difference value between the temperature values of the middle part and the edge part of the heating coil and a preset judgment strategy;
s603: counting the occurrence frequency of the heating coil in the temperature abnormal state according to a preset statistical strategy;
s604: and when the occurrence frequency of the temperature abnormal state meets a preset confirmation condition, confirming that the electromagnetic heating product is in the abnormal state, and controlling the working state of the heating coil according to the abnormal state of the heating coil.
According to the technical scheme shown in fig. 6, the temperature values of different parts of the heating coil are acquired, so that the temperatures of different areas of the heating coil can be measured, the temperature detection precision can be improved, and the abnormal working state of the heating coil can be found through the technical scheme shown in fig. 6 when the temperature difference is large.
It should be noted that, in the embodiment of the present invention, one temperature sensor may be disposed in the middle of the heating coil, and a plurality of temperature sensors may be disposed at the edge of the heating coil, where the number of the temperature sensors disposed at the edge of the heating coil is N.
To the technical solution shown in fig. 6, the embodiment of the present invention provides the following two specific implementation schemes.
Detailed description of the preferred embodiment
In the specific scheme, the temperature collected by the temperature sensor arranged in the middle of the heating coil is set to be T0The temperatures collected by the N temperature sensors arranged at the edge part of the heating coil are respectively as follows: t is1，T2，……，TN. The basic idea of the specific scheme is that sampling temperature points of the temperature sensors are detected at the same time point, and then heating/heat transfer abnormity of the electromagnetic heating product is determined by a temperature difference method.
Under the above setting conditions, for step S602, determining that the heating coil is in the abnormal temperature state according to the difference between the temperature values of the central portion and the edge portion of the heating coil and a preset determination strategy, specifically includes:
when the difference value between the temperature value of each edge part of the heating coil and the temperature value of the middle part of the heating coil is smaller than a preset first temperature threshold value, determining that the heating coil is in a normal temperature state;
and when the difference value between the temperature value of at least one edge part of the heating coil and the temperature value of the middle part of the heating coil is larger than the first temperature threshold value, determining that the heating coil is in a temperature abnormal state.
In the specific implementation process, the difference value between the temperature value of each edge part of the heating coil and the temperature value of the middle part of the heating coil is △ T1＝|T0-T1|，△T2＝|T0-T2|，……，△TN＝|T0-TNThen, when △ T0，△T1，……，△TNNone of which exceeds the preset first temperature threshold Tth1Then, it is determined that the heating coil is in a temperature normal state, wherein a first temperature threshold value Tth1The value range of (A) is preferably 1. ltoreq. Tth1≤20，And taking the average value of the temperature values of all the edge portions of the heating coil and the temperature value of the central portion of the heating coil as an actually detected temperature value T, namely:
correspondingly, for step S603, counting the number of occurrences of the heating coil being in the abnormal temperature state according to a preset statistical strategy may include:
when the heating coil is in the abnormal temperature state, closing the heating coil, adding one to an abnormal frequency counter, starting the heating coil after a preset first time period, acquiring temperature values of the middle part and the edge part of the heating coil according to a preset acquisition strategy, and determining that the heating coil is in the abnormal temperature state according to a difference value between the temperature values of the middle part and the edge part of the heating coil and a preset judgment strategy;
and when the heating coil is in a normal temperature state, resetting the abnormal frequency counter.
In a specific implementation, an abnormal number counter may be preset for the number of times the heating coil is in a temperature abnormal state, the default initial value of the counter is zero, when the heating coil is in a temperature abnormal state, the heating coil is turned off, the abnormal number m of times of temperature is recorded to be 1 by the abnormal number counter, and the preset first time period △ t is waited for1Then reheating, wherein, the time is less than or equal to 5 seconds and is less than or equal to △ t1Repeatedly executing the processes of the step S601 and the step S602 for no more than 5 minutes, and if the heating coil is in the temperature abnormal state again, recording the temperature abnormal time m to be 2 by an abnormal time counter; if the heating coil is in the normal temperature state, the temperature abnormal test record m of the abnormal number clearing counter is equal to 0, and the process is repeated.
Correspondingly, for step S604, when the number of occurrences of the abnormal temperature state satisfies a preset confirmation condition, confirming that the electromagnetic heating product is in the abnormal state, and controlling the operating state of the heating coil according to the abnormal state of the heating coil includes:
when the abnormal time counter exceeds a preset abnormal time threshold value, determining that the electromagnetic heating product is in an abnormal state; and ending the working state of the electromagnetic heating product or informing the abnormal state of the electromagnetic heating product.
In the specific implementation process, when the temperature abnormal times m recorded by the abnormal time counter is more than or equal to k, wherein k is more than or equal to 1, the heating/heat transfer abnormality of the electromagnetic heating product is confirmed, the cooking process of the electromagnetic heating product can be finished, and the heating/heat transfer abnormality of the product can also be prompted through a display device or a sound prompting device or a wireless signal.
Detailed description of the invention
The basic idea of the specific scheme is to detect the temperature slope of each temperature sensor and determine the heating/heat transfer abnormity of the electromagnetic heating product by a temperature slope difference method.
Based on the above basic idea, for step S601, acquiring temperature values of the central portion and the edge portion of the heating coil according to a preset acquisition strategy may include:
and acquiring temperature values of the middle part and the edge part of the heating coil every a preset second time period.
In a specific implementation, the preset second time period is △ t2Wherein, 1 second is less than or equal to △ t2Less than or equal to 10 minutes, then the temperature sensor 1 arranged in the middle of the heating coil is arranged at intervals of △ t2The temperatures collected were: t is01，T02，……，T0iWherein i represents the number of second time periods; correspondingly, the temperatures collected by the N temperature sensors 2 arranged at the edge of the heating coil are respectively: t is11，T12，……，T1i；T21，T12，……，T2i；……；TN1，TN2，……，TNi。
In the above setting conditions, for step S602, determining that the heating coil is in the abnormal temperature state according to the difference between the temperature values of the central portion and the edge portion of the heating coil and a preset determination strategy specifically includes:
acquiring temperature change values of the middle part and the edge part of the heating coil in each second time period;
when the difference value between the temperature change value of each edge part of the heating coil and the temperature change value of the middle part of the heating coil is smaller than a preset second temperature threshold value, determining that the heating coil is in a normal temperature state;
and determining that the heating coil is in a temperature abnormal state when a difference value between a temperature change value of at least one edge portion of the heating coil and a temperature change value of a central portion of the heating coil is greater than the second temperature threshold value.
In the specific implementation process, △ t is used as the first one2For example, the temperature change value of the middle part of the heating coil is △ T0(1)＝T01-T02The temperature change value of each edge portion of the heating coil was △ T1(1)＝T11-T12，△T2(1)＝T21-T22，……，△TN(1)＝TN1-TN2(ii) a Then, the difference between the temperature change value of each edge portion of the heating coil and the temperature change value of the central portion of the heating coil is: t is01(1)＝△T0(1)-△T1(1)，T02(1)＝△T0(1)-△T2(1)，……，T0N(1)＝△T0(1)-△TN(1) (ii) a Then when T01(1)，T02(1)，……，T0N(1) None of which exceeds the preset second temperature threshold Tth2Then, it is determined that the heating coil is in a temperature normal state, wherein a first temperature threshold value Tth1The value range of (A) is preferably 1. ltoreq. Tth2≦ 20, and taking the average value of the temperature values of all the edge portions of the heating coil and the temperature value of the central portion of the heating coil as the actually detected temperature value T, that is:when T is01(1)，T02(1)，……，T0N(1) None of which exceeds the preset second temperature threshold Tth2And determining that the heating coil is in a temperature abnormal state.
Correspondingly, for step S603, counting the number of occurrences of the heating coil being in the abnormal temperature state according to a preset statistical strategy may include:
when the heating coil is in the abnormal temperature state, closing the heating coil, adding one to an abnormal frequency counter, starting the heating coil after a preset third time period, acquiring temperature values of the middle part and the edge part of the heating coil according to a preset acquisition strategy, and determining that the heating coil is in the abnormal temperature state according to a difference value between the temperature values of the middle part and the edge part of the heating coil and a preset judgment strategy;
and when the heating coil is in a normal temperature state, resetting the abnormal frequency counter.
In a specific implementation, an abnormal number counter may be preset for the number of times the heating coil is in a temperature abnormal state, the default initial value of the counter is zero, when the heating coil is in a temperature abnormal state, the heating coil is turned off, the abnormal number m of times of temperature is recorded as 1 by the abnormal number counter, and the preset third time period △ t is waited for3Then reheating, wherein, the time is less than or equal to 5 seconds and is less than or equal to △ t3Repeatedly executing the processes of the step S601 and the step S602 for no more than 5 minutes, and if the heating coil is in the temperature abnormal state again, recording the temperature abnormal time m to be 2 by an abnormal time counter; if the heating coil is in the normal temperature state, the temperature abnormal test record m of the abnormal number clearing counter is equal to 0, and the process is repeated.
Correspondingly, for step S604, when the number of occurrences of the abnormal temperature state satisfies a preset confirmation condition, confirming that the electromagnetic heating product is in the abnormal state, and controlling the operating state of the heating coil according to the abnormal state of the heating coil includes:
when the abnormal time counter exceeds a preset abnormal time threshold value, determining that the electromagnetic heating product is in an abnormal state; and ending the working state of the electromagnetic heating product or informing the abnormal state of the electromagnetic heating product.
In the specific implementation process, when the temperature abnormal times m recorded by the abnormal time counter is more than or equal to k, wherein k is more than or equal to 1, the heating/heat transfer abnormality of the electromagnetic heating product is confirmed, the cooking process of the electromagnetic heating product can be finished, and the heating/heat transfer abnormality of the product can also be prompted through a display device or a sound prompting device or a wireless signal.
The present embodiment provides an operating method of a control device through two specific implementations, by disposing a plurality of temperature sensors at different positions of a heating coil, and then determining a temperature abnormality according to detection values of the plurality of temperature sensors. The temperature detection precision can be improved, and the phenomenon of uneven heating or heat transfer difference is avoided.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A control device for use in an electromagnetically heated product, the device comprising: a temperature sensor, a controller and a heating coil;
wherein the controller is connected with the heating coil and the temperature sensor;
the temperature sensors are disposed at a middle portion of the heating coil and at an edge portion of the heating coil.
2. The control apparatus according to claim 1, wherein the number of the temperature sensors is at least two.
3. The control device according to claim 1, wherein the number of the temperature sensors is 3; wherein, the first temperature sensor is arranged in the middle of the heating coil; the second temperature sensor and the third temperature sensor are provided at an edge portion of the heating coil.
4. The control device according to claim 3, wherein the second temperature sensor and the third temperature sensor are provided on either diameter of the heating coil and are respectively provided on both sides of a center of the heating coil.
5. The control device according to claim 1, wherein the number of the temperature controllers is 4; wherein, the first temperature sensor is arranged at the middle part of the heating coil; the second temperature sensor, the third temperature sensor and the fourth temperature sensor are provided at an edge portion of the heating coil.
6. The control device according to claim 5, wherein the central angles of any two of the second temperature sensor, the third temperature sensor and the fourth temperature sensor with the center of the heating coil are the same.
7. The control device of claim 1, wherein the controller is disposed in a housing of the electromagnetic heating product, connected to the heating coil through a control bus, and sends control commands to the heating coil through the control bus; wherein the control instruction is used for controlling the working state of the heating coil.
8. The control device according to any one of claims 1 to 7, wherein the controller is configured to acquire temperature values of the central portion and the edge portion of the heating coil through the temperature sensors according to a preset acquisition strategy;
determining that the heating coil is in an abnormal temperature state according to a difference value between the temperature values of the middle part and the edge part of the heating coil and a preset judgment strategy;
counting the occurrence frequency of the heating coil in the temperature abnormal state according to a preset statistical strategy;
and when the occurrence frequency of the temperature abnormal state meets a preset confirmation condition, confirming that the electromagnetic heating product is in the abnormal state, and controlling the working state of the heating coil according to the abnormal state of the heating coil.
9. The apparatus of claim 8, wherein the controller is configured to:
when the electromagnetic heating product is in an abnormal state; and ending the working state of the electromagnetic heating product or informing the abnormal state of the electromagnetic heating product.
10. An electromagnetic heating product, characterized in that it comprises a control device according to any one of claims 1 to 9.
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| CN201621399223.0U CN207037500U (en) | 2016-12-19 | 2016-12-19 | A kind of control device |
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| CN201621399223.0U CN207037500U (en) | 2016-12-19 | 2016-12-19 | A kind of control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108207047A (en) * | 2016-12-19 | 2018-06-26 | 佛山市顺德区美的电热电器制造有限公司 | A kind of control method and device |
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2016
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108207047A (en) * | 2016-12-19 | 2018-06-26 | 佛山市顺德区美的电热电器制造有限公司 | A kind of control method and device |
| CN108207047B (en) * | 2016-12-19 | 2024-09-03 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device |
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