A heating device and a control method for a heating device

Abstract

The present invention provides a heating device and a control method for the heating device. The heating device includes a box body defining a heating chamber, a carrier rack disposed in the heating chamber, and an electromagnetic wave generating system for generating electromagnetic waves to heat an object to be processed in the heating chamber. Wherein, the control method includes: obtaining a heating instruction for heating by using electromagnetic waves, controlling the electromagnetic wave generating system to generate electromagnetic waves, and then determining an optimal position of the carrier rack at least according to the electromagnetic wave absorption rate of the object to be processed. Based on the solution proposed by the present invention, the optimal position of the carrier rack is determined at least according to the electromagnetic wave absorption rate of the object to be processed, so that the object to be processed is heated at the optimal position, which not only improves the heating efficiency of the object to be processed, but also makes the object to be processed heated evenly, has a good taste, reduces or even avoids the occurrence of local overheating and burning phenomena, and there is no need for the user to manually adjust the position of the carrier rack, thus improving the user experience.

Description

Technical Field

[0001] The present invention relates to the field of household appliance design, and particularly to a heating device and a control method for the heating device. Background Art

[0002] In the prior art, the heaters (or radiation elements of the electromagnetic wave generation system) of heating devices such as ovens and microwave ovens and the carrier are usually fixed. That is, the food is usually heated at a fixed position in the heating device. However, due to the limitation of the fixed heater, the heating of each part of the food often fails to meet the heating requirements expected by users. Summary of the Invention

[0003] An object of the first aspect of the present invention is to overcome at least one technical defect in the prior art and provide a control method for a heating device.

[0004] A further object of the first aspect of the present invention is to improve the temperature uniformity of the object to be processed.

[0005] Another further object of the first aspect of the present invention is to improve the heating efficiency.

[0006] An object of the second aspect of the present invention is to provide a heating device.

[0007] In particular, the present invention provides a control method for a heating device, the heating device including a box body defining a heating chamber, a carrier provided in the heating chamber, and an electromagnetic wave generation system for generating electromagnetic waves for heating an object to be processed in the heating chamber, wherein the method includes:

[0008] Obtaining a heating instruction for heating using electromagnetic waves;

[0009] Controlling the electromagnetic wave generation system to generate electromagnetic waves;

[0010] Determining an optimal position of the carrier at least according to the electromagnetic wave absorption rate of the object to be processed.

[0011] Optionally, the step of determining an optimal position of the carrier at least according to the electromagnetic wave absorption rate of the object to be processed includes:

[0012] Controlling the carrier to stop at a plurality of preset alternative positions in sequence, and respectively monitoring the incident wave signal and the reflected wave signal in the heating chamber when the object to be processed is at each of the alternative positions;

[0013] Comparing the positions corresponding to the incident wave signal and the reflected wave signal at each of the alternative positions, and taking the position with the highest electromagnetic wave absorption rate as the optimal position.

[0014] Optionally, the heating device further includes a hot air circulator, and an air outlet of the hot air circulator is communicated with the heating chamber. If the heating instruction further includes heating by using the hot air circulator, the step of determining the optimal position of the object carrier according to at least the electromagnetic wave absorption rate of the object to be processed includes:

[0015] Obtain characteristic parameters of the object to be processed;

[0016] Determine the optimal position according to the characteristic parameters, the operating parameters of the hot air circulator, and the electromagnetic wave absorption rate of the object to be processed.

[0017] Optionally, the step of determining the optimal position according to the characteristic parameters, the operating parameters of the hot air circulator, and the electromagnetic wave absorption rate of the object to be processed includes:

[0018] Determine a reference position of the object carrier according to the characteristic parameters and the operating parameters of the hot air circulator;

[0019] Control the object carrier to stop at a plurality of preset alternative positions in sequence, and respectively monitor the incident wave signal and the reflected wave signal in the heating chamber when the object to be processed is at each of the alternative positions;

[0020] Determine at least one optional position corresponding to the electromagnetic wave absorption rate satisfying a preset screening condition according to the incident wave signal and the reflected wave signal corresponding to each of the alternative positions;

[0021] Take the position closest to the reference position among the at least one optional position as the optimal position.

[0022] Optionally, the preset screening condition is the top preset percentage of the electromagnetic wave absorption rates corresponding to the plurality of alternative positions.

[0023] Optionally, execute the step of controlling the object carrier to stop at a plurality of preset alternative positions in sequence, and respectively monitor the incident wave signal and the reflected wave signal in the heating chamber when the object to be processed is at each of the alternative positions at preset time intervals, and re-determine the optimal position of the object carrier.

[0024] Optionally, each time the optimal position of the object carrier is determined, re-determine the optimal position of the object carrier among the alternative positions except for the optimal position determined most recently.

[0025] Optionally, the hot air circulator is set to blow hot air forward, wherein,

[0026] Determine the reference position of the object carrier in the vertical direction according to the characteristic parameters and the operating parameters of the hot air circulator; and / or

[0027] Determine the at least one optional position according to the electromagnetic wave absorption rate of the object to be processed in the vertical direction.

[0028] Optionally, the characteristic parameter includes at least one of height, weight, and food type; and / or

[0029] The operating parameters of the hot air circulator include at least one of temperature and wind speed.

[0030] According to another aspect of the present invention, there is also provided a heating device, which includes:

[0031] A box body defining a heating chamber for accommodating food;

[0032] A carrier rack disposed in the heating chamber for carrying the object to be processed;

[0033] An electromagnetic wave generating system for generating electromagnetic waves for heating the object to be processed in the heating chamber; and

[0034] A controller including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, it is used to implement the control method for the heating device described in any one of the above.

[0035] When the present invention uses electromagnetic waves to heat the object to be processed, at least determine the optimal position of the carrier rack according to the electromagnetic wave absorption rate of the object to be processed, so that the object to be processed is heated at the optimal position, which not only improves the heating efficiency of the object to be processed, but also makes the object to be processed heated evenly, has a good taste and texture, reduces or even avoids the occurrence of local overheating and burning, and does not require the user to manually adjust the position of the carrier rack, thus improving the user experience. Before the present invention, those skilled in the art did not recognize that the placement of the object to be processed would affect the electromagnetic wave distribution in the heating chamber, causing the position where the electromagnetic waves are concentrated to change.

[0036] Furthermore, when the present invention uses electromagnetic waves and hot air circulation to mix-heat the object to be processed, first determine the reference position of the carrier rack according to the characteristic parameters of the object to be processed and the operating parameters of the hot air circulator, and then determine the optimal position with this reference position as a reference according to the electromagnetic wave absorption frequency of the object to be processed, so that the object to be processed is heated at the optimal position, improving the temperature uniformity of each part of the object to be processed (especially the temperature uniformity inside and outside the object to be processed), and the time for determining the optimal position is short, further improving the heating efficiency and further enhancing the user experience.

[0037] Furthermore, the present invention re-determines the optimal position of the carrier rack for the current time among the other alternative positions except the previously determined optimal position, which further shortens the time for determining the optimal position while ensuring the heating effect, and thus further improves the heating efficiency.

[0038] Those skilled in the art will better understand the above and other objects, advantages and features of the present invention from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. Description of the Drawings

[0039] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an illustrative rather than restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0040] Figure 1 shows a schematic structural diagram of a heating device according to an embodiment of the present invention;

[0041] Figure 2 shows a schematic structural diagram of a box body of a heating device according to an embodiment of the present invention;

[0042] Figure 3 shows a schematic flow diagram of a control method for a heating device according to an embodiment of the present invention;

[0043] Figure 4 shows a schematic flow diagram of a control method for a heating device according to an alternative embodiment of the present invention;

[0044] Figure 5 shows a schematic flow diagram of a control method for a heating device according to an alternative embodiment of the present invention;

[0045] Figure 6 shows a schematic flow diagram of a control method for a heating device according to an alternative embodiment of the present invention;

[0046] Figure 7 shows a schematic flow diagram of a control method for a heating device according to an alternative embodiment of the present invention. Detailed Embodiments

[0047] Exemplary embodiments of the present disclosure will be described in more detail hereinafter with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0048] It should be noted that the technical features in the embodiments and alternative embodiments of the present invention can be combined with each other on the premise of no conflict.

[0049] Figure 1Shows a schematic structural diagram of a heating device according to an embodiment of the present invention; Figure 2 Shows a schematic structural diagram of a cabinet of a heating device according to an embodiment of the present invention, which shows the device layout in the heating chamber. As Figure 1-2 shown, the heating device 100 may include a cabinet 110 defining a heating chamber 160, a carrier 120 disposed in the heating chamber 160, at least one heater 130 for heating an object to be processed in the heating chamber 160, an electromagnetic wave generating system 150, and a controller 140.

[0050] At least one heater 130 mainly heats the object to be processed in the heating chamber 160 through heat transfer. As can be understood by those skilled in the art, heat transfer refers to the transfer of thermal energy caused by a temperature difference.

[0051] In some embodiments, at least one heater 130 may include at least one electric heater 131 that mainly heats through thermal radiation.

[0052] If the number of electric heaters 131 is one, the electric heater 131 may be disposed at the top or bottom of the heating chamber 160; if the number of electric heaters 131 is two, the two electric heaters 131 may be respectively disposed at the top and bottom of the heating chamber 160 to improve the temperature uniformity of the object to be processed.

[0053] In some embodiments, at least one heater 130 may include a hot air circulator 132 that blows hot air and heats through heat convection, and its air outlet may communicate with the heating chamber 160 to heat the object to be processed in the heating chamber 160.

[0054] The hot air circulator 132 may be disposed at the back of the heating chamber 160, that is, its air outlet may communicate with the rear wall of the heating chamber 160 to blow hot air forward to improve the temperature uniformity of the heating chamber 160.

[0055] The electromagnetic wave generating system 150 may be disposed such that part of it is disposed in the heating chamber 160 or reaches into the heating chamber 160 to generate electromagnetic waves in the heating chamber 160 to heat the object to be processed. In the present invention, the electromagnetic wave may be a microwave or a radio frequency wave.

[0056] In some embodiments, the heating device 100 may further include a driving device for adjusting the position of the carrier 120 in the heating chamber 160.

[0057] The controller 140 may include a memory 142 and a processor 141. A computer program 1421 is stored in the memory 142, and when the computer program 1421 is executed by the processor 141, it is used to implement the method of the embodiment of the present invention.

[0058] In particular, the processor 141 can be configured to, when receiving a heating instruction that includes heating using electromagnetic waves, control the electromagnetic wave generating system 150 to generate electromagnetic waves, and determine at least the optimal position of the object carrier 120 based on the electromagnetic wave absorption rate of the object to be processed, and control the driving device to adjust the object carrier 120 to the optimal position.

[0059] A bidirectional coupler may be connected in series between the electromagnetic wave generating module of the electromagnetic wave generating system 150 and the radiation element, for monitoring the incident wave signal and the reflected wave signal in the heating chamber. The electromagnetic wave absorption rate of the object to be processed can be obtained by calculating based on the power of the incident wave signal and the reflected wave signal. When the incident wave signal is the same, the magnitude of the electromagnetic wave absorption rate of the object to be processed can be directly determined by comparing the power of the reflected wave signal.

[0060] The processor 141 can also be configured to, when receiving a heating instruction that includes heating using the heater 130, obtain the characteristic parameters of the object to be processed, and determine at least the optimal position of the object carrier 120 based on the characteristic parameters of the object to be processed, and control the driving device to adjust the object carrier 120 to the optimal position. In the present invention, the characteristic parameters may include at least one of height, weight, and food type.

[0061] In the present invention, when heating the object to be processed using electromagnetic waves, the optimal position of the object carrier 120 is determined at least based on the electromagnetic wave absorption rate of the object to be processed, and when heating the object to be processed using the heater, the optimal position of the object carrier 120 is determined at least based on the characteristic parameters of the object to be processed, so that the object to be processed is heated at the optimal position, which not only improves the heating efficiency of the object to be processed, but also makes the object to be processed heated evenly, has a good taste, reduces or even avoids the occurrence of local overheating and burning phenomena, and there is no need for the user to manually adjust the position of the object carrier 120, improving the user experience.

[0062] Specifically, if the heating instruction is to heat only using electromagnetic waves, the processor 141 can be configured to control the object carrier 120 to stay at a plurality of preset alternative positions in sequence, and respectively monitor the incident wave signal and the reflected wave signal in the heating chamber when the object to be processed is at each alternative position, and compare the position with the highest electromagnetic wave absorption rate as the optimal position based on the incident wave signal and the reflected wave signal corresponding to each alternative position.

[0063] In the electromagnetic wave heating mode, the type, size, and shape of the object to be processed will affect the magnetic field distribution in the heating chamber 160. For objects of different types, weights, or shapes, the optimal positions corresponding to the heating chamber 160 may be different. Therefore, the processor 141 will control the carrier 120 to stop at a plurality of preset alternative positions in sequence to monitor the incident wave signal and reflected wave signal in the heating chamber 160 when the object to be processed is at each alternative position. Among them, the plurality of preset alternative positions can be a plurality of positions in the vertical direction determined in advance according to a large number of objects to be processed of different types, weights, or shapes. It is certain that the plurality of alternative positions are positions where the electromagnetic wave energy in the heating chamber 160 is relatively concentrated.

[0064] In addition, after the object to be processed is placed in the heating chamber 160, the processor 141 can also obtain the height of the object to be processed. Specifically, it can be input by the user through the control panel of the heating device 100, or obtained by scanning the object to be processed by an infrared scanner provided in the heating chamber 160. The present invention does not limit this. After obtaining the height of the object to be processed, the processor 141 can control the carrier 120 to stop at an appropriate alternative position according to the height of the object to be processed to avoid touching the top wall of the heating chamber 160 when the object to be processed is too high.

[0065] If the heating instruction is to use only the heater 130 for heating, when using only the electric heater for heating, the processor 141 can be configured to determine the optimal position in the thermal radiation direction of the electric heater according to the characteristic parameters and the operating parameters of the electric heater. The operating parameters of the electric heater at least include temperature; when using only the hot air circulator for heating, the processor 141 can be configured to determine the optimal position perpendicular to the air supply direction of the hot air circulator according to the characteristic parameters and the operating parameters of the hot air circulator. The operating parameters of the hot air circulator at least include temperature and wind speed; when using both the electric heater and the hot air circulator for heating, a new optimal position can be determined by combining the optimal position under the electric heater and the optimal position under the hot air circulator.

[0066] If the heating instruction is to use both electromagnetic waves and the heater 130 for heating, the processor 141 can be configured to determine a reference position of the carrier 120 according to the characteristic parameters and the operating parameters of at least one heater; control the carrier 120 to stop at a plurality of preset alternative positions in sequence, and respectively monitor the incident wave signal and reflected wave signal in the heating chamber when the object to be processed is at each alternative position; determine at least one optional position corresponding to the electromagnetic wave absorption rate that meets the preset screening conditions according to the incident wave signal and reflected wave signal corresponding to each alternative position; and use the position closest to the reference position among the at least one optional position as the optimal position.

[0067] The above-mentioned preset screening conditions may be the first preset percentage of the electromagnetic wave absorption rates corresponding to multiple alternative positions. The first preset percentage may also be thirty percent or forty percent, and the present invention does not specifically limit the value of the first preset percentage. The alternative positions where the electromagnetic wave absorption rate is within the first preset percentage are relatively positions with higher electromagnetic wave absorption rates. Heating the object to be processed at the optional positions can ensure that the object to be processed is heated more evenly.

[0068] In addition, the preset screening conditions may also be that the electromagnetic wave absorption rate at the alternative position is higher than the set percentage. The set percentage may be seventy percent or eighty percent, and the present invention does not specifically limit the value of the set percentage. The optional positions determined in this way are also positions with higher electromagnetic wave absorption rates.

[0069] The processor 141 takes the position closest to the reference position among at least one optional position as the optimal position, which can ensure that the object to be processed is heated evenly and with high heating efficiency in the mixed heating mode of electromagnetic waves and the heater.

[0070] In addition, as the object to be processed is heated, parameters such as the moisture and protein of the object to be processed will change, which will in turn cause the electromagnetic wave absorption rate of the object to be processed to change, and the optimal position corresponding to the object to be processed in the heating chamber 160 will also change. To avoid this situation affecting the electromagnetic wave absorption rate of the object to be processed. The processor 141 will execute the step of controlling the carrier 120 to stay at a plurality of preset alternative positions in sequence at preset intervals, and respectively monitor the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is at each alternative position, and re-determine the optimal position of the carrier 120. Adjusting the optimal position of the object to be processed at preset intervals can ensure that the object to be processed is always in a state of being heated evenly during the heating process, so that the food heated in this way is heated evenly and has a better taste.

[0071] It should be noted that when determining the optimal position of the carrier 120 each time, the processor 141 will re-determine the optimal position of the carrier 120 among the alternative positions except for the optimal position determined most recently. This can not only save resources but also improve efficiency.

[0072] Figure 3 The flowchart shows a control method for a heating device according to an embodiment of the present invention. As Figure 3 shown, the control method for a heating device executed by the controller 140 according to any of the above embodiments of the present invention may include the following steps:

[0073] S102: Obtain a heating instruction including heating by the heater 130;

[0074] S104: Obtain the characteristic parameters of the object to be processed;

[0075] S106: Determine the optimal position of the carrier 120 based on at least the characteristic parameters.

[0076] In an embodiment of the present invention, in the heating mode of the heater 130, the optimal position of the carrier 120 is determined according to the characteristic parameters of the object to be processed, and then the object to be processed is heated at the optimal position, which can make the object to be processed heated evenly and taste better, improving the user experience.

[0077] In an alternative embodiment of the present invention, if the heating instruction in step S102 is to use the electric heater 131 for heating, then the optimal position of the carrier 120 is determined in the heat radiation direction of the electric heater 131 based on at least the characteristic parameters and the operating parameters of the electric heater 131. Among them, the characteristic parameters include at least one of height, weight, and food type. The operating parameters of the electric heater 131 include temperature. After determining the height of the object to be processed, the position closest to the electric heater 131 of the object to be processed can be used as the optimal position, and then the object to be processed is heated at this optimal position to ensure that the object to be processed is heated evenly.

[0078] In another alternative embodiment of the present invention, if the heating instruction in step S102 is to use the hot air circulator 132 for heating, then the optimal position is determined in the direction perpendicular to the air supply direction of the hot air circulator 132 based on at least the characteristic parameters and the operating parameters of the hot air circulator 132. Among them, the operating parameters of the hot air circulator 132 include at least one of temperature and wind speed. The optimal position determined in the heating mode of the hot air circulator 132 can be the position corresponding to the largest heating area of the object to be processed. Heating the object to be processed at this position can ensure that the object to be processed is heated evenly.

[0079] In yet another alternative embodiment of the present invention, if the heating instruction in step S102 is to use a hybrid heating of the hot air circulator 132 and the electric heater 131, then any position between the optimal position in the heating mode of the electric heater 131 and the optimal position in the heating mode of the hot air circulator 132 can be used as the optimal position in the hybrid heating mode of the electric heater 131 and the hot air circulator 132, such as the midpoint, which not only ensures that the object to be processed is heated evenly.

[0080] Figure 4 Shows a schematic flow chart of a control method for a heating device according to an alternative embodiment of the present invention. As Figure 4 shown, the control method includes:

[0081] S202: Obtain a heating instruction including heating by electromagnetic waves;

[0082] S204: Control the electromagnetic wave generating system 130 to generate electromagnetic waves;

[0083] S206: Determine the optimal position of the carrier 120 based at least on the electromagnetic wave absorption rate of the object to be processed.

[0084] In this embodiment, the optimal position of the carrier 120 is determined based at least on the electromagnetic wave absorption rate of the object to be processed, so that the object to be processed is heated at the optimal position, which not only improves the heating efficiency of the object to be processed, but also makes the object to be processed heated evenly, has a good taste, reduces or even avoids the occurrence of local overheating and burning, and there is no need for the user to manually adjust the position of the carrier 120, thus enhancing the user experience.

[0085] Figure 5 The flowchart shows a control method for a heating device according to an alternative embodiment of the present invention. As Figure 5 shown, the above step S206 may specifically include the following sub-steps:

[0086] S1: Control the carrier 120 to stop at a plurality of preset alternative positions in sequence, and respectively monitor the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is at each alternative position;

[0087] S2: Based on the incident wave signal and the reflected wave signal corresponding to each alternative position, compare to find the position with the highest electromagnetic wave absorption rate as the optimal position.

[0088] In the electromagnetic wave heating mode, the type, size and shape of the object to be processed will affect the magnetic field distribution in the heating chamber 160. The optimal positions corresponding to different types, different weights or different shapes of the objects to be processed in the heating chamber 160 may all be different. Therefore, in step S1, after the object to be processed is placed in the heating chamber 160, the controller 140 will control the carrier 120 to stop at a plurality of preset alternative positions in sequence to monitor the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is at each alternative position. Among them, the plurality of preset alternative positions may be a plurality of positions in the vertical direction determined in advance according to a large number of objects to be processed of different types, different weights or different shapes. It can be determined that the plurality of alternative positions are positions where the electromagnetic wave energy in the heating chamber 160 is relatively concentrated.

[0089] In addition, after the object to be processed is placed in the heating chamber 160, the height of the object to be processed can also be obtained. Specifically, it can be input by the user through the control panel of the heating device 100, or obtained by scanning the object to be processed with an infrared scanner provided in the heating chamber 160. The present invention does not limit this. After obtaining the height of the object to be processed, the carrier 120 can be controlled to stop at an appropriate alternative position according to the height of the object to be processed to avoid the object to be processed touching the top wall of the heating chamber 160 when it is too high.

[0090] After that, in step S2, the position with the highest electromagnetic wave absorption rate is taken as the optimal position of the carrier 120, and the object to be processed is heated at this position, which can ensure uniform heating of the object to be processed.

[0091] Figure 6 FIG. shows a schematic flow chart of a control method for a heating device according to an alternative embodiment of the present invention. As Figure 6 shown, the control method may include the following steps:

[0092] S302: Obtain a heating instruction including heating using electromagnetic waves and at least one heater;

[0093] S304: Control the electromagnetic wave generating system 130 to generate electromagnetic waves and at least one heater to start working;

[0094] S306: Obtain the characteristic parameters of the object to be processed;

[0095] S308: Determine the optimal position according to the characteristic parameters, the working parameters of at least one heater, and the electromagnetic wave absorption rate of the object to be processed.

[0096] Figure 7 FIG. shows a schematic flow chart of a control method for a heating device according to an alternative embodiment of the present invention. As Figure 7 shown, step S308 may specifically include the following sub-steps:

[0097] S31: Determine the reference position of the carrier 120 according to the characteristic parameters and the working parameters of at least one heater;

[0098] S32: Control the carrier 120 to stop at a plurality of preset alternative positions in sequence, and respectively monitor the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is at each alternative position;

[0099] S33: Determine at least one optional position corresponding to the electromagnetic wave absorption rate satisfying a preset screening condition according to the incident wave signal and the reflected wave signal corresponding to each alternative position;

[0100] S34: Take the position closest to the reference position among at least one optional position as the optimal position.

[0101] Among them, the reference position of the carrier 120 determined in step S31 is the optimal position of the carrier 120 in the heater heating mode. Specifically, as can be seen from the above, when the heating instruction includes heating by the electric heater 131, the reference position can be the position where the object to be processed is closest to the electric heater 131; when the heating instruction includes heating by the hot air circulator 132, the reference position can be the position where the object to be processed has the largest heating area under the hot air circulator 132; when the heating instruction includes heating by the electric heater 131 and the hot air circulator 132, the reference position can be the position between the reference position in the heating mode of the electric heater 131 and the reference position in the heating mode of the hot air circulator 132 for the object to be processed, such as the midpoint.

[0102] The preset screening conditions mentioned in step 33 and step S34 can preferably be the top preset percentage of the electromagnetic wave absorption rates corresponding to multiple alternative positions. The top preset percentage can be thirty percent or forty percent, and the present invention does not specifically limit the value of the top preset percentage. The alternative positions with electromagnetic wave absorption rates in the top preset percentage are relatively positions with higher electromagnetic wave absorption rates. Heating the object to be processed at the alternative positions can ensure that the object to be processed is heated more evenly.

[0103] In addition, the preset screening condition can also be that the electromagnetic wave absorption rate at the alternative position is higher than the set percentage. The set percentage can be seventy percent or eighty percent, and the present invention does not specifically limit the value of the set percentage. The alternative positions determined in this way are also positions with higher electromagnetic wave absorption rates.

[0104] In this embodiment, the position closest to the reference position among at least one alternative position is used as the optimal position, and the object to be processed is heated at the optimal position, which improves the temperature uniformity of each part of the object to be processed (especially the temperature uniformity inside and outside the object to be processed), and the time for determining the optimal position is short, further improving the heating efficiency and further enhancing the user experience.

[0105] In the above embodiment, as the object to be processed is heated, parameters such as the moisture and protein of the object to be processed will change, which will in turn cause the electromagnetic wave absorption rate of the object to be processed to change, and the optimal position corresponding to the object to be processed in the heating chamber 160 will also change. To avoid this situation affecting the electromagnetic wave absorption rate of the object to be processed. In an alternative embodiment of the present invention, the controller 140 can control the carrier 120 to stay at a plurality of preset alternative positions in sequence at preset time intervals, and respectively monitor the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is at each alternative position, and compare the position with the highest electromagnetic wave absorption rate as the new optimal position of the carrier 120 according to the incident wave signal and the reflected wave signal corresponding to each alternative position.

[0106] Adjusting the optimal position of the object to be processed at preset time intervals like this can ensure that the object to be processed is always in a state of uniform heating during the heating process, and the food heated in this way has a better taste.

[0107] It should be noted that when determining the optimal position of the object carrier 120 each time, the optimal position of the object carrier 120 is re-determined among the alternative positions except for the most recently determined optimal position.

[0108] The preset time mentioned above, like the alternative positions, is also obtained through multiple experiments. It can be determined that the electromagnetic wave absorption rate of the most recently determined optimal position is relatively low among the alternative positions. Therefore, when re-determining the optimal position, the most recently determined optimal position can be excluded and determined among other alternative positions, which not only ensures the heating effect but also further shortens the time for determining the optimal position, thereby further improving the heating efficiency.

[0109] The present invention provides a heating device and a control method for the heating device. In the method provided by the present invention, when the object to be processed is in the heater heating and / or electromagnetic wave heating mode, the optimal position of the object carrier 120 is determined respectively according to the characteristic parameters of the object to be processed and / or the electromagnetic wave absorption rate of the object to be processed, and then the object to be processed is heated at the optimal position. This not only improves the heating efficiency of the object to be processed, but also makes the object to be processed heated evenly, has a good taste, reduces or even avoids the occurrence of local overheating and burning, and there is no need for the user to manually adjust the position of the object carrier 120, improving the user experience; further, the present invention re-determines the optimal position of the object carrier 120 for the current time among the other alternative positions except for the previously determined optimal position, which not only ensures the heating effect but also further shortens the time for determining the optimal position, thereby further improving the heating efficiency.

[0110] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A control method for a heating device, the heating device including a box body defining a heating chamber, a carrier disposed in the heating chamber, and an electromagnetic wave generating system for generating electromagnetic waves to heat an object to be processed in the heating chamber, wherein, The method includes: Obtaining a heating instruction including heating by using electromagnetic waves; Controlling the electromagnetic wave generating system to generate electromagnetic waves; Determining an optimal position of the object holder at least according to the electromagnetic wave absorption rate of the object to be processed; Wherein, the heating device further includes a hot air circulator, and an air outlet of the hot air circulator is communicated with the heating chamber. Wherein, the heating instruction further includes heating by using the hot air circulator. The step of determining the optimal position of the object holder at least according to the electromagnetic wave absorption rate of the object to be processed includes: Obtaining characteristic parameters of the object to be processed; Determining the optimal position according to the characteristic parameters, operating parameters of the hot air circulator, and the electromagnetic wave absorption rate of the object to be processed; Wherein, the step of determining the optimal position according to the characteristic parameters, operating parameters of the hot air circulator, and the electromagnetic wave absorption rate of the object to be processed includes: Determining a reference position of the object holder according to the characteristic parameters and the operating parameters of the hot air circulator, and the reference position is the position where the object to be processed has the largest heat-receiving area under the hot air circulator; Controlling the object holder to stay at a plurality of preset alternative positions in sequence, and respectively monitoring the incident wave signal and the reflected wave signal in the heating chamber when the object to be processed is at each of the alternative positions; Determining at least one optional position corresponding to an electromagnetic wave absorption rate that meets a preset screening condition according to the incident wave signal and the reflected wave signal corresponding to each of the alternative positions; Taking the position closest to the reference position among the at least one optional position as the optimal position.

2. The method according to claim 1, wherein, The preset screening condition is the top preset percentage of the electromagnetic wave absorption rates corresponding to the plurality of alternative positions.

3. The method according to claim 1, wherein, Executing the step of controlling the object holder to stay at a plurality of preset alternative positions in sequence, and respectively monitoring the incident wave signal and the reflected wave signal in the heating chamber when the object to be processed is at each of the alternative positions at intervals of a preset time, and re-determining the optimal position of the object holder.

4. The method according to claim 3, wherein, When determining the optimal position of the object holder each time, re-determining the optimal position of the object holder among the alternative positions except for the optimal position determined most recently.

5. The method according to claim 1, wherein the hot air circulator is arranged to blow hot air forward, wherein, Determining the reference position of the object holder in the vertical direction according to the characteristic parameters and the operating parameters of the hot air circulator; and / or Determining the at least one optional position in the vertical direction according to the electromagnetic wave absorption rate of the object to be processed.

6. The method according to claim 1, wherein, The characteristic parameters include at least one of height, weight, and food type; and / or The operating parameters of the hot air circulator include at least one of temperature and wind speed.

7. A heating device, comprising: A box body defining a heating chamber for accommodating food; An object holder disposed in the heating chamber for carrying an object to be processed; An electromagnetic wave generating system for generating electromagnetic waves to heat the object to be processed in the heating chamber; And A controller including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, it is used to implement the control method for a heating device according to any one of claims 1 to 6.

Images