Heating device and control method for heating device

Abstract

The present invention proposes a heating device and a control method for the heating device, wherein the heating device includes a box body defining a heating chamber, a rack disposed in the heating chamber, and at least one heater for heating an object to be processed in the heating chamber by heat transfer, wherein the control method for the heating device includes: obtaining a heating instruction including heating by the heater, obtaining characteristic parameters of the object to be processed and determining the optimal position of the rack at least based on the characteristic parameters. Based on the method proposed in the present invention, the optimal position of the rack 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 better 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 rack, thereby improving the user experience.

Description

Technical Field

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

[0002] In the prior art, the heaters (or the radiation elements of the electromagnetic wave generating system) and the racks of heating devices such as ovens and microwave ovens are usually fixed, that is, the food is usually placed in a fixed position in the heating device for heating. However, due to the limitation of the fixed heater, the heating of various parts of the food often cannot meet the heating requirements expected by the user. Summary of the invention

[0003] An object of the first aspect of the present invention is to overcome at least one technical drawback 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 treated.

[0005] Another further object of the first aspect of the present invention is to improve 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 comprising a box defining a heating chamber, a support frame arranged in the heating chamber, and at least one heater for heating an object to be processed in the heating chamber by heat transfer, wherein the method comprises:

[0008] obtaining a heating instruction including heating by using the heater;

[0009] Acquiring characteristic parameters of the object to be processed;

[0010] The optimal position of the object rack is determined at least according to the characteristic parameter.

[0011] Optionally, the at least one heater includes an electric heater that heats by thermal radiation, and if the heating instruction includes heating by the electric heater, the optimal position is determined in the thermal radiation direction of the electric heater at least based on the characteristic parameter and the operating parameter of the electric heater; and / or

[0012] The at least one heater includes a hot air circulator that blows hot air for heating by thermal convection. If the heating instruction includes heating using the hot air circulator, the optimal position is determined in an air supply direction perpendicular to the hot air circulator at least based on the characteristic parameters and the working parameters of the hot air circulator.

[0013] Optionally, the heating device further comprises an electromagnetic wave generating system for generating electromagnetic waves for heating the object to be processed in the heating chamber, wherein:

[0014] If the heating instruction also includes heating using electromagnetic waves, the step of determining the optimal position of the object holder at least based on the characteristic parameters is to determine the optimal position based on the characteristic parameters, the working parameters of the at least one heater and the electromagnetic wave absorption rate of the object to be processed.

[0015] Optionally, the step of determining the optimal position according to the characteristic parameter, the operating parameter of the heater and the electromagnetic wave absorptivity of the object to be processed includes:

[0016] Determining a reference position of the rack according to the characteristic parameter and an operating parameter of the at least one heater;

[0017] Controlling the object-carrying rack to stop at a plurality of preset candidate 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 candidate positions;

[0018] Determine, according to the incident wave signals and reflected wave signals corresponding to the candidate positions, at least one optional position whose corresponding electromagnetic wave absorption rate meets a preset screening condition;

[0019] The position of the at least one optional position that is closest to the reference position is used as the optimal position.

[0020] Optionally, the preset screening condition is a preset percentage of the electromagnetic wave absorption rate corresponding to the multiple candidate positions.

[0021] Optionally, the step of controlling the object rack to stay at a plurality of preset alternative positions in turn is performed once at a preset time interval, 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, and re-determining the optimal position of the object rack.

[0022] Optionally, each time the optimal position of the rack is determined, the optimal position of the rack is re-determined among the candidate positions except the most recently determined optimal position.

[0023] Optionally, the at least one optional position is determined in the vertical direction according to the electromagnetic wave absorptivity of the object to be processed.

[0024] Optionally, the characteristic parameter includes at least one of height, weight, and food type; and / or

[0025] The operating parameters of the at least one heater include at least temperature.

[0026] According to another aspect of the present invention, a heating device is also provided, the heating device comprising:

[0027] A box body defines a heating chamber for accommodating food;

[0028] A material support rack, arranged in the heating chamber and used for supporting materials to be processed;

[0029] at least one heater for heating the object to be processed in the heating chamber by heat transfer; and

[0030] The controller comprises 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 any of the above-mentioned control methods for the heater.

[0031] When the present invention uses a heater to heat the object to be processed, the optimal position of the object holding rack is determined at least according to 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 and has a better taste, reduces or even avoids the occurrence of local overheating and burning, and does not require the user to manually adjust the position of the object holding rack, thereby improving the user experience.

[0032] Furthermore, when the present invention adopts electromagnetic waves and heaters to perform mixed heating on the object to be processed, the reference position of the object support rack is first determined according to the characteristic parameters of the object to be processed and the operating parameters of the heater, and then the optimal position is determined based on the electromagnetic wave absorption frequency of the object to be processed with the reference position as a reference, so that the object to be processed is heated at the optimal position, which improves the temperature uniformity of various parts of the object to be processed (especially the temperature uniformity inside and outside the object to be processed), and the time to determine the optimal position is shorter, which further improves the heating efficiency and further enhances the user experience.

[0033] Furthermore, the present invention redetermines the optimal position of the current storage rack among other candidate positions except the optimal position determined last time, thereby further shortening the time for determining the optimal position while ensuring the heating effect, thereby further improving the heating efficiency.

[0034] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0036] Figure 1 shows a schematic structural diagram of a heating device according to an embodiment of the present invention;

[0037] Figure 2 A schematic structural diagram of a box of a heating device according to an embodiment of the present invention is shown;

[0038] Figure 3 A schematic flow chart of a control method for a heating device according to an embodiment of the present invention is shown;

[0039] Figure 4 A schematic flow chart of a control method for a heating device according to an optional embodiment of the present invention is shown;

[0040] Figure 5 A schematic flow chart of a control method for a heating device according to an optional embodiment of the present invention is shown;

[0041] Figure 6 A schematic flow chart of a control method for a heating device according to an optional embodiment of the present invention is shown;

[0042] Figure 7 A schematic flow chart of a control method for a heating device according to an optional embodiment of the present invention is shown. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying 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 to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] It should be noted that the technical features in the embodiment and optional embodiments of the present invention can be combined with each other under the premise of no conflict.

[0045] Figure 1 shows a schematic structural diagram of a heating device according to an embodiment of the present invention; Figure 2 FIG. 2 shows a schematic structural diagram of a box of a heating device according to an embodiment of the present invention, which shows the layout of components in the heating chamber. Figure 1-2As shown, the heating device 100 may include a box body 110 defining a heating chamber 160 , a rack 120 disposed in the heating chamber 160 , at least one heater 130 and an electromagnetic wave generating system 150 for heating the object to be processed in the heating chamber 160 , and a controller 140 .

[0046] The at least one heater 130 heats the object to be processed in the heating chamber 160 mainly by heat transfer. As can be understood by those skilled in the art, heat transfer refers to the transfer of heat energy caused by temperature difference.

[0047] In some embodiments, the at least one heater 130 may include at least one electric heater 131 that heats primarily by thermal radiation.

[0048] If there is one electric heater 131, the electric heater 131 can be set at the top or bottom of the heating chamber 160; if there are two electric heaters 131, the two electric heaters 131 can be respectively set at the top and bottom of the heating chamber 160 to improve the temperature uniformity of the object to be processed.

[0049] In some embodiments, at least one heater 130 may include a hot air circulator 132 that can blow hot air to perform heating by thermal convection, and an air outlet of the hot air circulator 132 may be connected to the heating chamber 160 to heat the object to be processed in the heating chamber 160 .

[0050] The hot air circulator 132 may be disposed at the back of the heating chamber 160 , that is, its air outlet may be connected to the rear wall of the heating chamber 160 to blow hot air forward to improve the temperature uniformity of the heating chamber 160 .

[0051] The electromagnetic wave generating system 150 may be partially disposed in the heating chamber 160 or may be connected to 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 waves may be microwaves or radio frequency waves.

[0052] In some embodiments, the heating device 100 may further include a driving device for adjusting the position of the rack 120 in the heating chamber 160 .

[0053] The controller 140 may include a memory 142 and a processor 141 . The memory 142 stores a computer program 1421 . 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.

[0054] In particular, the processor 141 can be configured to control the electromagnetic wave generating system 150 to generate electromagnetic waves when a heating instruction including heating using electromagnetic waves is obtained, and determine the optimal position of the object rack 120 based on at least the electromagnetic wave absorption rate of the object to be processed, and control the driving device to adjust the object rack 120 to the optimal position.

[0055] A bidirectional coupler may be connected in series between the electromagnetic wave generating module and the radiation element of the electromagnetic wave generating system 150 to monitor 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 calculated based on the power of the incident wave signal and the reflected wave signal. When the incident wave signals are 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.

[0056] The processor 141 may also be configured to obtain characteristic parameters of the object to be processed when a heating instruction including heating by the heater 130 is obtained, and determine the optimal position of the object support rack 120 at least according to the characteristic parameters of the object to be processed, and control the driving device to adjust the object support rack 120 to the optimal position. In the present invention, the characteristic parameters may include at least one of height, weight, and food type.

[0057] When the present invention uses electromagnetic waves to heat the object to be processed, the optimal position of the object holding rack 120 is determined at least according to the electromagnetic wave absorption rate of the object to be processed. When the present invention uses a heater to heat the object to be processed, the optimal position of the object holding rack 120 is determined at least according to the characteristic parameters of the object to be processed. 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 better 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 object holding rack 120, thereby improving the user experience.

[0058] Specifically, if the heating instruction is to use only electromagnetic waves for heating, the processor 141 can be configured to control the object rack 120 to stay in a plurality of preset alternative positions in turn, 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, and compare the position with the highest electromagnetic wave absorption rate as the optimal position based on the incident wave signal and reflected wave signal corresponding to each alternative position.

[0059] 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, and the optimal positions corresponding to the objects to be processed of different types, weights or shapes in the heating chamber 160 may be different. Therefore, the processor 141 controls the object holder 120 to stay in the preset multiple candidate positions in turn to monitor the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is in each candidate position. Among them, the preset multiple candidate positions can be multiple positions in the vertical direction determined in advance based on a large number of objects to be processed of different types, weights or shapes. It can be determined that the multiple candidate positions are positions where the electromagnetic wave energy in the heating chamber 160 is relatively concentrated.

[0060] 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, which 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, and the present invention is not limited to this. After obtaining the height of the object to be processed, the processor 141 can control the support rack 120 to stay at an appropriate alternative position according to the height of the object to be processed, so as to avoid the object to be processed from touching the top wall of the heating chamber 160 when it is too high.

[0061] If the heating instruction is to use only the heater 130 for heating, and only the electric heater is used for heating, the processor 141 can be configured to determine the optimal position in the heat radiation direction of the electric heater based on the characteristic parameters and the working parameters of the electric heater, and the working parameters of the electric heater include at least the temperature; when only the hot air circulator is used for heating, the processor 141 can be configured to determine the optimal position in the air supply direction perpendicular to the hot air circulator based on the characteristic parameters and the working parameters of the hot air circulator, and the working parameters of the hot air circulator include at least temperature and wind speed; when the electric heater and the hot air circulator are used for heating at the same time, the new optimal position can be determined by combining the optimal position under the electric heater and the optimal position under the hot air circulator.

[0062] If the heating instruction is to use electromagnetic waves and heater 130 for heating at the same time, the processor 141 can be configured to determine the reference position of the object rack 120 based on the characteristic parameters and the working parameters of at least one heater; control the object rack 120 to stay in a plurality of preset alternative positions in turn, 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; determine at least one optional position whose corresponding electromagnetic wave absorption rate meets the preset screening conditions based on the incident wave signal and the reflected wave signal corresponding to each alternative position; and take the position of the at least one optional position that is closest to the reference position as the optimal position.

[0063] The preset screening condition mentioned above may be a preset percentage of the electromagnetic wave absorption rate corresponding to the plurality of candidate positions. Alternatively, the preset percentage may be 30% or 40%, and the present invention does not specifically limit the value of the preset percentage. The candidate position where the electromagnetic wave absorption rate is at the preset percentage is relatively a position with a higher electromagnetic wave absorption rate. Heating the object to be processed at the optional position can ensure that the object to be processed is heated more evenly.

[0064] In addition, the preset screening condition may also be that the electromagnetic wave absorption rate at the candidate position is higher than a set percentage. The set percentage may be 70% or 80%, and the present invention does not specifically limit the value of the set percentage. The optional position determined in this way is also a position with a higher electromagnetic wave absorption rate.

[0065] The processor 141 uses 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 efficiently in the mixed heating mode of electromagnetic waves and heaters.

[0066] In addition, as the object to be processed is heated, parameters such as moisture and protein of the object to be processed will change, which will cause the electromagnetic wave absorption rate of the object to be processed to change, and the corresponding optimal position of the object to be processed in the heating chamber 160 will also change. In order to avoid this situation affecting the electromagnetic wave absorption rate of the object to be processed. The processor 141 will execute the steps of controlling the object holder 120 to stay in a plurality of preset alternative positions in turn at a preset time interval, 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 object holder 120. Adjusting the optimal position of the object to be processed at preset time intervals can ensure that the object to be processed is always in a uniformly heated state during the heating process, so that the heated food is evenly heated and tastes better.

[0067] It should be noted that each time the optimal position of the rack 120 is determined, the processor 141 will re-determine the optimal position of the rack 120 from the candidate positions except the most recently determined optimal position. This can not only save resources but also improve efficiency.

[0068] Figure 3 FIG. 2 is a flow chart of a control method for a heating device according to an embodiment of the present invention. Figure 3 As shown, the control method for a heating device executed by the controller 140 of any of the above embodiments of the present invention may include the following steps:

[0069] S102: Acquiring a heating instruction including heating by using the heater 130;

[0070] S104: Acquiring characteristic parameters of the object to be processed;

[0071] S106: Determine the optimal position of the rack 120 at least based on the characteristic parameters.

[0072] In an embodiment of the present invention, in the heating mode of the heater 130, the optimal position of the object holder 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, so that the object to be processed is heated evenly and tastes better, thereby improving the user experience.

[0073] In an optional embodiment of the present invention, if the heating instruction in step S102 is to use the electric heater 131 for heating, the optimal position of the object holder 120 is determined in the heat radiation direction of the electric heater 131 at least based on the characteristic parameters and the working parameters of the electric heater 131. The characteristic parameters include at least one of the height, weight, and type of food. The working parameters of the electric heater 131 include temperature. After determining the height of the food to be processed, the position of the object to be processed closest to the electric heater 131 can be used as the optimal position, and then the object to be processed can be heated at this optimal position to ensure that the object to be processed is heated evenly.

[0074] In another optional 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 air supply direction perpendicular to the hot air circulator 132 at least based on the characteristic parameters and the working parameters of the hot air circulator 132. Among them, the working 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.

[0075] In another optional embodiment of the present invention, if the heating instruction in step S102 is to use mixed heating of the hot air circulator 132 and the electric heater 131, 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 mixed heating mode of the electric heater 131 and the hot air circulator 132, for example, one-half. This not only ensures that the object to be processed is heated evenly.

[0076] Figure 4 FIG. 2 is a flow chart of a control method for a heating device according to an optional embodiment of the present invention. Figure 4 As shown, the control method includes:

[0077] S202: Acquiring a heating instruction including heating by using electromagnetic waves;

[0078] S204: Control the electromagnetic wave generating system 130 to generate electromagnetic waves;

[0079] S206: Determine the optimal position of the object rack 120 at least based on the electromagnetic wave absorption rate of the object to be processed.

[0080] In this embodiment, the optimal position of the object rack 120 is determined at least based 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 better taste, reduces or even avoids local overheating and burning, and does not require the user to manually adjust the position of the object rack 120, thereby improving the user experience.

[0081] Figure 5 FIG. 2 is a flow chart of a control method for a heating device according to an optional embodiment of the present invention. Figure 5 As shown, the above step S206 may specifically include the following sub-steps:

[0082] S1: Controlling the object holder 120 to stop at a plurality of preset candidate positions in sequence, and respectively monitoring the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is at each candidate position;

[0083] S2: According to the incident wave signal and the reflected wave signal corresponding to each candidate position, the position with the highest electromagnetic wave absorption rate is compared and taken as the optimal position.

[0084] 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, and the optimal positions corresponding to the objects to be processed of different types, weights or shapes in the heating chamber 160 may 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 object holder 120 to stay in a plurality of preset alternative positions in turn to monitor the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is in each alternative position. Among them, the preset multiple alternative positions can be multiple positions in the vertical direction determined in advance based on a large number of objects to be processed of different types, weights or shapes. It can be determined that the multiple alternative positions are positions where the electromagnetic wave energy in the heating chamber 160 is relatively concentrated.

[0085] 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, which 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, and the present invention is not limited to this. After the height of the object to be processed is obtained, the object support rack 120 can be controlled to stay at an appropriate alternative position according to the height of the object to be processed, so as to avoid the object to be processed from touching the top wall of the heating chamber 160 when it is too high.

[0086] Afterwards, in step S2, the position with the highest electromagnetic wave absorption rate is used as the optimal position of the object holder 120, and the object to be processed is heated at this position, which can ensure that the object to be processed is heated evenly.

[0087] Figure 6 FIG. 2 is a flow chart of a control method for a heating device according to an optional embodiment of the present invention. Figure 6 As shown, the control method may include the following steps:

[0088] S302: Acquiring a heating instruction including heating using electromagnetic waves and at least one heater;

[0089] S304: Control the electromagnetic wave generating system 130 to generate electromagnetic waves and at least one heater to start working;

[0090] S306: Acquire characteristic parameters of the object to be processed;

[0091] 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.

[0092] Figure 7 FIG. 2 is a flow chart of a control method for a heating device according to an optional embodiment of the present invention. Figure 7 As shown, step S308 may specifically include the following sub-steps:

[0093] S31: determining a reference position of the object holder 120 according to the characteristic parameter and the working parameter of at least one heater;

[0094] S32: Controlling the object holder 120 to stop at a plurality of preset candidate positions in sequence, and respectively monitoring the incident wave signal and the reflected wave signal in the heating chamber 160 when the object to be processed is at each candidate position;

[0095] S33: determining at least one optional position whose corresponding electromagnetic wave absorption rate meets a preset screening condition according to the incident wave signal and the reflected wave signal corresponding to each candidate position;

[0096] S34: Taking the position closest to the reference position among at least one optional position as the optimal position.

[0097] Among them, the reference position of the object holder 120 determined in step S31 is the optimal position of the object holder 120 in the heater heating mode. Specifically, it can be seen from the above that when the heating instruction includes heating with the electric heater 131, the reference position can be the position of the object to be processed closest to the electric heater 131; when the heating instruction includes heating with the hot air circulator 132, the reference position can be the position of the object to be processed with the largest heated area under the hot air circulator 132; when the heating instruction includes heating with the electric heater 131 and the hot air circulator 132, the reference position can be the position between the reference position of the object to be processed in the heating mode of the electric heater 131 and the reference position of the object to be processed in the heating mode of the hot air circulator 132, for example, halfway.

[0098] The preset screening conditions mentioned in step 33 and step S34 can preferably be the preset percentages of the electromagnetic wave absorption rates corresponding to the multiple candidate positions. The preset percentage can be 30% or 40%, and the present invention does not specifically limit the value of the preset percentage. The candidate position where the electromagnetic wave absorption rate is at the preset percentage is relatively a position with a higher electromagnetic wave absorption rate. Heating the object to be processed at the optional position can ensure that the object to be processed is heated more evenly.

[0099] In addition, the preset screening condition may also be that the electromagnetic wave absorption rate at the candidate position is higher than a set percentage. The set percentage may be 70% or 80%, and the present invention does not specifically limit the value of the set percentage. The optional position determined in this way is also a position with a higher electromagnetic wave absorption rate.

[0100] In this embodiment, the position closest to the reference position among at least one optional position is taken as the optimal position, so that the object to be processed is heated at the optimal position, thereby improving the temperature uniformity of various parts 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 shorter, which further improves the heating efficiency and further enhances the user experience.

[0101] In the above embodiment, as the object to be processed is heated, parameters such as 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 corresponding optimal position of the object to be processed in the heating chamber 160 will also change. In order to avoid this situation affecting the electromagnetic wave absorption rate of the object to be processed. In an optional embodiment of the present invention, the controller 140 can control the object holder 120 to stay in a plurality of preset alternative positions in turn 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 according to the incident wave signal and the reflected wave signal corresponding to each alternative position as the new optimal position of the object holder 120.

[0102] In this way, by adjusting the optimal position of the object to be processed at preset time intervals, it can be ensured that the object to be processed is always in a state of uniform heating during the heating process, so that the heated food tastes better.

[0103] It should be noted that each time the optimal position of the object rack 120 is determined, the optimal position of the object rack 120 is re-determined among the candidate positions except the most recently determined optimal position.

[0104] The preset time mentioned above is obtained through multiple tests like the candidate positions. It can be determined that the electromagnetic wave absorption rate of the most recently determined optimal position is relatively low among the candidate positions. Therefore, when re-determining the optimal position, the most recently determined optimal position can be removed and determined in other candidate positions. While ensuring the heating effect, the time for determining the optimal position is further shortened, thereby further improving the heating efficiency.

[0105] The present invention proposes a heating device and a control method for the heating device. In the method proposed in the present invention, when the object to be processed is in a heater heating and / or electromagnetic wave heating mode, the optimal position of the object holding rack 120 is determined 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, which not only improves the heating efficiency of the object to be processed, but also makes the object to be processed heated evenly and has a better taste, reduces or even avoids local overheating and burning, and does not require the user to manually adjust the position of the object holding rack 120, thereby improving the user experience; further, the present invention re-determines the optimal position of the object holding rack 120 at other alternative positions except the optimal position determined last time, while ensuring the heating effect, further shortens the time for determining the optimal position, thereby further improving the heating efficiency.

[0106] 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 based on 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 recognized as covering all these other variations or modifications.

Claims

1. A control method for a heating device, the heating device comprising a box body defining a heating chamber, a support frame arranged in the heating chamber, and at least one heater for heating an object to be processed in the heating chamber by heat transfer, wherein: The method comprises: obtaining a heating instruction including heating by using the heater; Acquiring characteristic parameters of the object to be processed; Determining the optimal position of the object rack at least according to the characteristic parameter; Wherein, the heating device further comprises an electromagnetic wave generating system for generating electromagnetic waves for heating the object to be processed in the heating chamber, and if the heating instruction further comprises heating by electromagnetic waves, determining the optimal position of the object holder at least according to the characteristic parameters is determining the optimal position according to the characteristic parameters, the working parameters of the at least one heater and the electromagnetic wave absorption rate of the object to be processed; Wherein, determining the optimal position according to the characteristic parameter, the operating parameter of the heater and the electromagnetic wave absorptivity of the object to be processed comprises: Determining a reference position of the rack according to the characteristic parameter and an operating parameter of the at least one heater; Controlling the object-carrying rack to stop at a plurality of preset candidate 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 candidate positions; Determine, according to the incident wave signals and reflected wave signals corresponding to the candidate positions, at least one optional position whose corresponding electromagnetic wave absorption rate meets a preset screening condition; The position of the at least one optional position that is closest to the reference position is used as the optimal position.

2. The method according to claim 1, wherein: The at least one heater includes an electric heater that heats by thermal radiation, and if the heating instruction includes heating by the electric heater, the optimal position is determined in the thermal radiation direction of the electric heater at least based on the characteristic parameter and the operating parameter of the electric heater; and / or The at least one heater includes a hot air circulator that blows hot air for heating by thermal convection. If the heating instruction includes heating using the hot air circulator, the optimal position is determined in an air supply direction perpendicular to the hot air circulator at least based on the characteristic parameters and the working parameters of the hot air circulator.

3. The method according to claim 1, wherein: The preset screening condition is a preset percentage of the electromagnetic wave absorption rate corresponding to the multiple candidate positions.

4. The method according to claim 1, wherein: The steps of controlling the object rack to stay at a plurality of preset alternative positions in turn are performed once at a preset time interval, 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, and re-determining the optimal position of the object rack.

5. The method according to claim 4, wherein: Each time the optimal position of the object rack is determined, the optimal position of the object rack is re-determined among the candidate positions except the most recently determined optimal position.

6. The method according to claim 4, wherein: The at least one optional position is determined in the vertical direction according to the electromagnetic wave absorption rate of the object to be processed.

7. The method according to claim 1, wherein: The characteristic parameter includes at least one of height, weight, and food type; and / or The operating parameters of the at least one heater include at least temperature.

8. A heating device, comprising: A box body defines a heating chamber for accommodating food; A material support rack, arranged in the heating chamber and used for supporting materials to be processed; at least one heater for heating the object to be processed in the heating chamber by heat transfer; as well as A controller comprises 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 7.

Images