Heating method and refrigeration and freezing device

Abstract

The present invention provides a heating method for a refrigeration and freezing device and a refrigeration and freezing device. A storage compartment of the refrigeration and freezing device includes at least one storage area and a heating area. The heating method includes: obtaining a change parameter of at least one storage area; if the heating condition is met, determining the heating parameter of the heating area according to the change parameter; heating the object to be processed in the heating area according to the heating parameter. The present invention obtains the change parameter of the storage area and uses the change parameter of the storage area to determine the heating parameter of the heating area, thereby making full use of the characteristics that different foods are stored in different storage areas, simplifying user operations, and compared with setting a sensing unit in the heating area to sense the parameters of the object to be processed, it will not be affected by factors such as high temperature and electromagnetic waves, and has higher accuracy.

Description

Technical Field

[0001] The invention relates to the field of food processing, and in particular to a heating method and a refrigeration and freezing device with heating function. Background Art

[0002] During the freezing process of food, the quality of the food is maintained, but the frozen food needs to be thawed before processing or eating. In order to facilitate users to thaw the food, the food is usually thawed by an electromagnetic wave heating unit.

[0003] Thawing food by electromagnetic wave heating unit is not only fast and efficient, but also reduces the loss of food nutrients. However, the prior art generally requires users to input heating parameters and heating instructions for thawing, which not only places too high requirements on users, but also makes the operation complicated. Taking all factors into consideration, a heating method that can simplify user operation and a refrigeration and freezing device with heating function are needed in design. Summary of the invention

[0004] 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 heating method.

[0005] A further object of the first aspect of the present invention is to simplify user operation.

[0006] Another further object of the first aspect of the present invention is to enable more precise heating of the object to be treated.

[0007] An object of the second aspect of the present invention is to provide a refrigerator-freezer with a heating function.

[0008] According to a first aspect of the present invention, there is provided a heating method for a refrigerator-freezer, wherein a storage compartment of the refrigerator-freezer comprises at least one storage area and a heating area, and the heating method comprises:

[0009] obtaining a change parameter of the at least one storage area;

[0010] If the heating condition is met, determining the heating parameter of the heating zone according to the change parameter;

[0011] The object to be processed in the heating zone is heated according to the heating parameters.

[0012] Optionally, the change parameter includes at least one of weight loss and food category; and / or

[0013] The heating condition comprises at least one of receiving a heating instruction, the heating zone being turned on, and the heating zone being turned off; and / or

[0014] The heating parameters include at least one of heating time and heating power.

[0015] Optionally, if the heating zone is opened and closed only once before the step of heating the object to be processed in the heating zone according to the heating parameters, in the step of determining the heating parameters of the heating zone according to the changing parameters, the heating parameters of the heating zone are determined based on the changing parameters of the storage zone that last changed before the heating conditions were met.

[0016] Optionally, the change parameter includes a weight reduction, wherein the heating method further comprises:

[0017] If, before the step of heating the object to be processed in the heating zone according to the heating parameters, the heating zone is opened and closed only once, the time interval between the single opening action and the single closing action of the heating zone is calculated; and

[0018] If the time interval is less than the preset time threshold, in the step of determining the heating parameter of the heating zone according to the change parameter, the heating parameter of the heating zone is determined according to the weight reduction of the storage zone that last changed before the heating zone is opened;

[0019] If the time interval is greater than or equal to the time threshold, in the step of determining the heating parameters of the heating zone based on the changing parameters, the heating parameters of the heating zone are determined based on the weight reduction of the storage zone that last changed before the heating zone was opened and the weight reduction of the storage zone that changed between the opening action and the closing action of the heating zone.

[0020] Optionally, the change parameter includes a weight reduction, wherein the heating method further comprises:

[0021] If the heating zone is opened and closed multiple times before the step of heating the object to be processed in the heating zone according to the heating parameters, in the step of determining the heating parameters of the heating zone according to the changing parameters, the heating parameters of the heating zone are determined according to the weight reduction of at least one storage area before the step of heating the object to be processed in the heating zone according to the heating parameters.

[0022] Optionally, the change parameter includes a weight reduction, wherein the heating method further comprises:

[0023] If the weight reduction of the at least one heating zone is greater than or equal to a preset weight threshold, the step of determining the heating parameters of the heating zone according to the change parameters is performed.

[0024] Optionally, after the heating condition is met, the method further includes:

[0025] After the door corresponding to the storage compartment is closed, the step of heating the object to be processed in the heating zone according to the heating parameters is performed.

[0026] Optionally, the refrigerator-freezer further comprises at least one weight sensing unit for respectively sensing a weight reduction of the at least one heating zone, and an opening and closing sensing unit for sensing an opening action or a closing action of the heating zone, and the heating method further comprises:

[0027] After the door corresponding to the storage compartment is opened, power is supplied to the weight sensing unit and the opening and closing sensing unit;

[0028] After the door corresponding to the storage compartment is closed, power supply to the weight sensing unit and the opening and closing sensing unit is stopped.

[0029] According to a second aspect of the present invention, there is provided a refrigeration and freezing device, comprising:

[0030] a housing defining at least one storage compartment, wherein one of the storage compartments includes at least one storage area and a heating area;

[0031] at least one door for opening and closing the at least one storage compartment; and

[0032] A controller is configured to execute any of the heating methods described above.

[0033] Optionally, the refrigeration and freezing device further comprises a heating unit; wherein the heating unit comprises:

[0034] A cylinder body, arranged in the storage room, for accommodating objects to be processed;

[0035] a door body, used for opening and closing the cylinder body, the cylinder body and the door body forming the heating zone; and

[0036] The electromagnetic wave generating system is at least partially disposed in the cylinder or reaches the cylinder to emit electromagnetic waves into the cylinder to heat the object to be processed in the cylinder.

[0037] The present invention obtains the changing parameters of the storage area and uses the changing parameters of the storage area to determine the heating parameters of the heating area, thereby fully utilizing the characteristics of different foods being stored in different storage areas, simplifying user operations, and compared with setting a sensing unit in the heating area to sense the parameters of the object to be processed, it will not be affected by factors such as high temperature and electromagnetic waves, and has higher accuracy.

[0038] Furthermore, the present invention determines the weight reduction amount used to determine the heating parameters according to the order in which the storage areas change, the time interval between the opening and closing actions of the heating areas, the number of opening and closing actions, etc., thereby reducing the error in obtaining the weight reduction amount, thereby making the heating of the processed object more precise and ensuring the quality of the processed object after heating.

[0039] Furthermore, the present invention selects whether to supply power to the sensing unit according to the opening and closing of the door, and starts to heat the object to be processed after the door is closed. This not only reduces the energy consumption of the refrigeration and freezing device, but also effectively reduces or even avoids electromagnetic wave leakage, eliminates adverse effects on user health, and improves user experience.

[0040] 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

[0041] 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:

[0042] Figure 1 is a schematic cross-sectional view of a refrigeration and freezing device according to an embodiment of the present invention;

[0043] Figure 2 yes Figure 1 A schematic structural diagram of the circuit of the refrigeration and freezing device shown;

[0044] Figure 3 is a schematic flow chart of a heating method for a refrigeration and freezing device according to an embodiment of the present invention;

[0045] Figure 4 is a schematic detailed flow chart of a heating method for a refrigeration and freezing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] Figure 1 is a schematic cross-sectional view of a refrigerator-freezer 100 according to an embodiment of the present invention. Figure 1 The refrigerator-freezer 100 may include a housing 110 defining at least one storage compartment, at least one door for opening and closing the at least one storage compartment, a refrigeration system for providing cold to the storage compartment, and a controller 140. In the present invention, at least one may be one, two, or more than two.

[0047] A storage compartment of the box 110 includes at least one storage area 1121 and a heating area 1122. The storage area 1121 is used to store food, and the heating area 1122 is used to heat the object 170 to be processed.

[0048] In the illustrated embodiment, at least one storage compartment may include a refrigerating compartment 111 and a freezing compartment 112 disposed below the refrigerating compartment 111. At least one cabinet door may include a refrigerating door 121 for opening and closing the refrigerating compartment 111 and a freezing door 122 for opening and closing the freezing compartment 112. A heating area 1122 may be disposed in the freezing compartment 112 to facilitate users to take and place objects 170 to be processed.

[0049] The following describes in detail the refrigeration and freezing device 100 of the present invention by taking the heating area 1122 disposed in the freezing compartment 112 as an example.

[0050] Figure 2 yes Figure 1 The schematic structural diagram of the circuit of the refrigerator-freezer 100 is shown in FIG. Figure 1 and Figure 2 In some embodiments, the refrigerator-freezer 100 may further include a heating unit for heating the object to be processed 170 .

[0051] The heating unit may include a cylinder 131 and a door 132 disposed in the freezing compartment 112, and an electromagnetic wave generating system.

[0052] The cylinder 131 can be used to accommodate the object to be processed 170. The door 132 can be used to open and close the access opening of the cylinder 131. The cylinder 131 and the door 132 can form a heating zone 1122 together.

[0053] The electromagnetic wave generating system may be at least partially disposed in the cylinder 131 or reach the cylinder 131 to emit electromagnetic waves into the cylinder 131 to heat the object 170 to be processed in the cylinder 131 .

[0054] Specifically, the electromagnetic wave generating system may include an electromagnetic wave generating module 1331 , a radiation plate 1332 , and a matching module 1333 .

[0055] The radiation plate 1332 may be disposed in the cylinder 131. In some embodiments, a receiving plate may be disposed in the cylinder 131 to form a capacitor with the radiation plate 1332. In other embodiments, the cavity may be made of metal to serve as a receiving plate to form a capacitor with the radiation plate 1332.

[0056] The electromagnetic wave generating module 1331 can be configured to generate electromagnetic wave signals and be electrically connected to the radiation plate 1332 to generate electromagnetic waves in the barrel 131 , thereby heating the object to be processed 170 in the barrel 131 .

[0057] The matching module 1333 can be connected in series between the electromagnetic wave generating module 1331 and the radiation plate 1332, and is configured to adjust the load impedance of the electromagnetic wave generating module 1331 by adjusting its own impedance to achieve load matching and improve heating efficiency.

[0058] The controller 140 may include a processing unit and a storage unit, wherein the storage unit stores a computer program, and when the computer program is executed by the processing unit, it is used to implement the heating method of the embodiment of the present invention.

[0059] In some embodiments, the processing unit can be configured to obtain change parameters of at least one storage area 1121, and when the heating conditions are met, determine the heating parameters of the heating area 1122 according to the change parameters of at least one storage area 1121, and control the electromagnetic wave generating system to heat the object 170 to be processed in the heating area 1122 according to the heating parameters.

[0060] In some exemplary embodiments, the change parameter may include at least one of a weight reduction (the difference between the weight after the change and the weight before the change), and a food category. The heating condition may include at least one of receiving a heating instruction, turning on the heating zone 1122, and closing the heating zone 1122. The heating parameter may include at least one of a heating time, and a heating power.

[0061] For example, there are multiple storage areas 1121. The processing unit can be configured to obtain the weight reduction of the multiple storage areas 1121 and the food categories corresponding to the weight reduction, and determine the heating power and heating time of the heating area 1122 according to the weight reduction and the corresponding food categories when the heating area 1122 is turned off or receives a heating instruction.

[0062] The refrigeration and freezing device 100 of the present invention obtains the changing parameters of the storage area 1121 and uses the changing parameters of the storage area 1121 to determine the heating parameters of the heating area 1122. It fully utilizes the characteristics of different foods being stored in different storage areas 1121, simplifies user operation, and compared with setting a sensing unit in the heating area 1122 to sense the parameters of the object to be processed 170, it will not be affected by factors such as high temperature and electromagnetic waves, and has higher accuracy.

[0063] In some embodiments where the heating zone 1122 is opened and closed only once before heating, if multiple storage areas 1121 change, or a single storage area 1121 changes multiple times, the processing unit can be configured to determine the heating parameters of the heating zone 1122 based on the change parameters of the storage area 1121 that changed last time before the heating conditions were determined to be met, so as to reduce the acquisition error of the change parameters and ensure the quality of the object 170 to be processed after heating.

[0064] For example, in the illustrated embodiment, before the heating area 1122 is opened, the storage area 1121 located at the upper layer loses 500 g of weight for the first time, the storage area 1121 located at the lower layer loses 300 g of weight for the second time, and the storage area 1121 located at the upper layer loses 400 g of weight for the last time. The processing unit determines the heating parameters according to the last weight loss of 400 g in the storage area 1121 located at the upper layer.

[0065] In other embodiments where the heating zone 1122 only opens and closes once before heating, if multiple storage areas 1121 change, or a single storage area 1121 changes multiple times, the processing unit can be configured to calculate the time interval between the opening action and the closing action of the heating zone 1122, and when the time interval is less than a preset time threshold, determine the heating parameters of the heating zone 1122 according to the weight reduction of the storage area 1121 that last changed before the heating zone 1122 opened; when the time interval is greater than or equal to the time threshold, determine the heating parameters of the heating zone 1122 according to the weight reduction of the storage area 1121 that last changed before the heating zone 1122 opened and the weight reduction of the storage area 1121 that changed between the opening action and the closing action of the heating zone 1122, so as to reduce the error in obtaining the weight reduction and improve the accuracy of heating the object 170 to be processed.

[0066] For example, in the illustrated embodiment, before the heating zone 1122 is opened, the storage area 1121 on the upper layer and the storage area 1121 on the lower layer lose weight by 500g and 300g respectively, and after the door body 132 is opened, the storage area 1121 on the upper layer loses weight by 400g. If the time interval between the opening action and the closing action of the heating zone 1122 is less than the time threshold, the processing unit determines the heating parameters according to the 300g weight loss in the storage area 1121 on the lower layer; if the time interval between the opening action and the closing action of the heating zone 1122 is greater than or equal to the time threshold, the processing unit determines the heating parameters according to the sum of the 300g weight loss in the storage area 1121 on the lower layer and the 400g weight loss in the storage area 1121 on the upper layer.

[0067] If the plurality of storage areas 1121 changes, the processing unit may be configured to determine the heating time according to the weight reduction, and control the electromagnetic wave generating system to heat the object to be processed 170 according to a preset heating power value and the determined heating time.

[0068] In some embodiments where the heating zone 1122 is opened and closed multiple times before heating, the processing unit can be configured to determine the heating parameters of the heating zone 1122 based on the weight reduction of all storage areas 1121 before heating, so as to reduce the error in obtaining the weight reduction and improve the accuracy of heating the object 170 to be processed.

[0069] For example, in the illustrated embodiment, before the heating area 1122 is turned off, the storage area 1121 located on the upper layer loses weight by 400g, 500g and -400g respectively, and the processing unit determines the heating parameters according to the weight loss of 500g (the sum of 400g, 500g and -400g) occurring in the storage area 1121 located on the upper layer.

[0070] In some embodiments, the processing unit is configured to use the weight reduction amount to determine the heating parameters of the heating zone 1122 when the weight reduction amount of the heating zone 1122 is greater than or equal to the preset weight threshold, so as to reduce errors. For example, if the single weight reduction amount of the heating zone 1122 is less than the preset weight threshold, no record is made.

[0071] In some embodiments, the processing unit is configured to heat the object to be processed 170 in the heating zone 1122 after the freezing door 122 is closed to improve safety performance.

[0072] In some embodiments, the refrigerator-freezer 100 further includes at least one weight sensing unit 150 and an opening and closing sensing unit 160. The at least one weight sensing unit 150 is used to sense the weight reduction of at least one heating zone 1122. The opening and closing sensing unit 160 is used to sense whether the heating zone 1122 is opened or closed.

[0073] The processing unit may be configured to supply power to the weight sensing unit 150 and the opening and closing sensing unit 160 after the freezer door 122 is opened, and to stop supplying power to the weight sensing unit 150 and the opening and closing sensing unit 160 after the freezer door 122 is closed to reduce energy consumption.

[0074] Figure 3 is a schematic flow chart of a heating method for a refrigeration and freezing device 100 according to an embodiment of the present invention. Figure 3 The heating method for the refrigeration and freezing device 100 of the present invention may include the following steps:

[0075] Step S302: Obtain a change parameter of at least one storage area 1121. The change parameter may include at least one of a weight reduction (a difference between the weight after the change and the weight before the change) and a food category.

[0076] Step S304: If the heating condition is met, determine the heating parameters of the heating zone 1122 according to the change parameter. The heating condition may include at least one of receiving a heating instruction, the heating zone 1122 turning on, and the heating zone 1122 closing. The heating parameters may include at least one of heating time and heating power.

[0077] Step S306: heating the object 170 to be processed in the heating zone 1122 according to the heating parameters.

[0078] The heating method of the present invention obtains the change parameters of the storage area 1121 and uses the change parameters of the storage area 1121 to determine the heating parameters of the heating area 1122. It fully utilizes the characteristics of different foods being stored in different storage areas 1121, simplifies user operation, and compared with setting a sensing unit in the heating area 1122 to sense the parameters of the object to be processed 170, it will not be affected by factors such as high temperature and electromagnetic waves, and has higher accuracy.

[0079] In some embodiments where the heating zone 1122 is opened and closed only once before heating, if multiple storage areas 1121 change, or a single storage area 1121 changes multiple times, in step S304, the heating parameters of the heating zone 1122 can be determined based on the change parameters of the storage area 1121 that changed for the last time before the heating conditions were met, so as to reduce the acquisition error of the change parameters and ensure the quality of the object 170 to be processed after heating.

[0080] In other embodiments where the heating zone 1122 only undergoes one opening and closing action before heating, if multiple storage areas 1121 change or a single storage area 1121 changes multiple times, in step S304, the time interval between a single opening action and a closing action of the heating zone 1122 can be calculated. If the time interval is less than a preset time threshold, in the step of determining the heating parameters of the heating zone 1122 according to the change parameters, the weight reduction of the storage area 1121 that last changed before the opening action of the heating zone 1122 is used to determine the heating parameters of the heating zone 1122; if the time interval is greater than or equal to the time threshold, in the step of determining the heating parameters of the heating zone 1122 according to the change parameters, the weight reduction of the storage area 1121 that last changed before the opening action of the heating zone 1122 and the weight reduction of the storage area 1121 that changed between the opening action and the closing action of the heating zone 1122 are used to determine the heating parameters of the heating zone 1122, so as to reduce the error in obtaining the weight reduction and improve the accuracy of heating the object 170 to be processed.

[0081] In some embodiments where the heating zone 1122 is opened and closed multiple times before heating, in step S304, the heating parameters of the heating zone 1122 can be determined based on the weight reduction of at least one storage area 1121 before the last closing action of the heating zone 1122, so as to reduce the error in obtaining the weight reduction and improve the accuracy of heating the object 170 to be processed.

[0082] In some embodiments, in step S302 or step S304, if the weight reduction of the heating zone 1122 is greater than or equal to a preset weight threshold, the heating parameters of the heating zone 1122 are determined according to the change parameters to reduce errors.

[0083] In some embodiments, after the freezer door 122 is closed, step S306 is performed to improve safety performance.

[0084] In some embodiments, before step S302, after the freezer door 122 is opened, power is supplied to the weight sensing unit 150 and the opening and closing sensing unit 160; after step S306, after the freezer door 122 is closed, power is stopped from being supplied to the weight sensing unit 150 and the opening and closing sensing unit 160 to reduce energy consumption.

[0085] Figure 4 is a schematic detailed flow chart of a heating method for a refrigerator-freezer 100 according to an embodiment of the present invention (in the present invention, "Y" means "yes"; "N" means "no"). Figure 4 The heating method for the refrigeration and freezing device 100 of the present invention may include the following detailed steps:

[0086] Step S402: Determine whether the freezing door 122 is open. If yes, execute step S404; if no, repeat step S402.

[0087] Step S404: Power is supplied to the weight sensing unit 150 and the heating unit (ie, power is supplied to the opening and closing detection unit and the electromagnetic wave generating system at the same time), and the weight reduction of the storage area 1121 and the corresponding food type are obtained and recorded.

[0088] Step S406: Determine whether the freezing door 122 is closed. If so, execute steps S408 and S410; if not, return to step S404.

[0089] Step S408 : stopping supplying power to the weight sensing unit 150 .

[0090] Step S410: Determine whether the door body 132 is opened or closed during the opening and closing process of the freezing door 122. If yes, execute step S412; if no, return to step S402.

[0091] Step S412: Determine whether the weight reduction is greater than or equal to a preset weight threshold. If so, execute step S414; if not, execute step S424.

[0092] Step S414: Determine the heating power and heating time according to the weight reduction and the corresponding food type.

[0093] Step S416: Control the electromagnetic wave generating system to heat the object 170 according to the heating power and heating time.

[0094] Step S418: Determine whether the remaining time is zero. If so, execute step S420; if not, repeat step S418.

[0095] Step S420: Stop heating the object to be processed 170 (ie, control the electromagnetic wave generating system to stop working).

[0096] Step S422: Determine whether the door 132 is opened or closed. If so, determine that the object to be processed 170 is taken out, and execute step S424; if not, repeat step S422.

[0097] Step S424: stop supplying power to the heating unit and return to step S402.

[0098] 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 heating method for a refrigerator, wherein a storage compartment of the refrigerator comprises a plurality of storage areas and a heating area, the heating method comprising: Acquire change parameters of the plurality of storage areas, the change parameters including weight reduction and food categories corresponding to the weight reduction; If the heating condition is met, determining the heating parameter of the heating zone according to the change parameter; The object to be processed in the heating zone is heated according to the heating parameters; wherein, If, before the step of heating the object to be processed in the heating zone according to the heating parameters, the heating zone is opened and closed only once, the time interval between the single opening action and the single closing action of the heating zone is calculated; and If the time interval is less than the preset time threshold, in the step of determining the heating parameter of the heating zone according to the change parameter, the heating parameter of the heating zone is determined according to the weight reduction of the storage zone that last changed before the heating zone is opened; If the time interval is greater than or equal to the time threshold, in the step of determining the heating parameters of the heating zone based on the changing parameters, the heating parameters of the heating zone are determined based on the weight reduction of the storage zone that last changed before the heating zone was opened and the weight reduction of the storage zone that changed between the opening action and the closing action of the heating zone.

2. The heating method according to claim 1, wherein: The heating condition comprises at least one of receiving a heating instruction, the heating zone being turned on, and the heating zone being turned off; and / or The heating parameters include at least one of heating time and heating power.

3. The heating method according to claim 1, wherein: The heating method further comprises: If the heating zone is opened and closed multiple times before the step of heating the object to be processed in the heating zone according to the heating parameters, in the step of determining the heating parameters of the heating zone according to the changing parameters, the heating parameters of the heating zone are determined according to the weight reduction of the multiple storage areas before the step of heating the object to be processed in the heating zone according to the heating parameters.

4. The heating method according to claim 1, wherein: The heating method further comprises: If the weight reduction of the plurality of storage areas is greater than or equal to a preset weight threshold, the step of determining the heating parameters of the heating area according to the change parameters is performed.

5. The heating method according to claim 1, further comprising: after the heating condition is met: After the door corresponding to the storage compartment is closed, the step of heating the object to be processed in the heating zone according to the heating parameters is performed.

6. The heating method according to claim 1, wherein the refrigerator-freezer further comprises at least one weight sensing unit for respectively sensing a weight reduction of the plurality of storage areas, and an opening and closing sensing unit for sensing an opening action or a closing action of the heating area, and the heating method further comprises: After the door corresponding to the storage compartment is opened, power is supplied to the weight sensing unit and the opening and closing sensing unit; After the door corresponding to the storage compartment is closed, power supply to the weight sensing unit and the opening and closing sensing unit is stopped.

7. A refrigeration and freezing device, comprising: a housing defining at least one storage compartment, wherein one of the storage compartments includes a plurality of storage areas and a heating area; At least one door, used to open and close the at least one storage compartment; as well as A controller configured to execute the heating method described in any one of claims 1-6.

8. The refrigerator-freezer according to claim 7, further comprising a heating unit; wherein: The heating unit comprises: A cylinder body, arranged in the storage room, for accommodating objects to be processed; a door body, used for opening and closing the cylinder body, the cylinder body and the door body forming the heating zone; and The electromagnetic wave generating system is at least partially disposed in the cylinder or reaches the cylinder to emit electromagnetic waves into the cylinder to heat the object to be processed in the cylinder.

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