Electromagnetic cooking utensil

Abstract

The utility model discloses an electromagnetic cooking utensil which comprises a base and an upper shell arranged on the base to bear a pot body, a plurality of connecting columns connected with the upper shell are arranged on the periphery of the base, and the electromagnetic cooking utensil is characterized in that a plurality of weighing units are further arranged on the periphery of the base; the weighing units are in one-to-one correspondence with the connecting columns and are arranged close to the connecting columns. The weighing unit and the connecting column are adjacently arranged, so that the weighing unit can sense gravity change in time to improve the response timeliness, the probability of deformation of a plastic part, between the weighing unit and the connecting column, of the base can be greatly reduced due to the shortening of the distance, the service life of the base is prolonged, and the service life of the base is prolonged. And the measurement accuracy is ensured, so that the measurement result can accurately reflect the gravity change, and a more accurate reference is provided for the control unit to regulate and control the heating power and / or the heating time.

Description

Technical Field

[0001] The present application belongs to the technical field of kitchen appliances, and in particular relates to an electromagnetic cooking appliance. Background Art

[0002] In actual use, induction cookers are often used to heat food for a long time, such as for cooking hot pot. During the cooking process, the weight of the food will change frequently due to evaporation of water, users taking food, adding new food or soup, so during this process, users need to constantly adjust the power of the induction cooker to adapt to the change in the amount of food, which greatly reduces the user experience.

[0003] In order to solve this technical problem, some induction cookers have appeared in the prior art that can adjust the power according to the weight of the ingredients. By setting a weighing sensor on the bottom plate of the induction cooker, the evaporation condition and / or the weight condition of the pot body are identified according to the output signal of the weighing sensor, and then the boiling condition of the hot pot and / or the remaining condition of the ingredients are known, so as to automatically adjust the heating power.

[0004] In a specific induction cooker product, it includes a panel and a bottom plate located below the panel. The panel and the bottom plate cooperate to form a cavity. A control unit, an electromagnetic heating unit and a weighing unit are arranged in the cavity. A support body is provided between the panel and the bottom plate. The support body supports the entire panel on the bottom plate. The upper surface of the panel is used to place heating dishes or pots. The weighing unit is arranged on the bottom plate and is located directly below the electromagnetic heating unit. When the weight of the heating dishes or pots placed on the panel changes, the panel will produce a slight displacement in the up and down directions. The slight displacement is transmitted from the support body to the bottom plate, thereby causing a corresponding change in the pressure of the weighing unit arranged on the bottom plate. The weighing unit transmits the generated pressure signal to the control unit to perform corresponding power adjustment. Because the weighing unit is arranged on the base plate and is located directly below the electromagnetic heating unit, and the support body is located at the outer periphery of the panel and the base plate, the distance between the weighing unit and the support body is relatively far. The base plate is injection-molded by plastic material. The long-distance arrangement between the weighing unit and the support body, on the one hand, prolongs the force transmission path, resulting in the slow response of the weighing unit and the measurement results cannot accurately reflect the actual gravity situation. On the other hand, the long-distance arrangement of the two causes the plastic parts between the base plate used to connect the support body and the installation position for installing the weighing unit to be easily deformed during the weighing process, thereby affecting the accuracy of the measurement. Utility Model Content

[0005] The present application provides an electromagnetic cooking appliance to solve the technical problem that the weighing unit is far away from the support body between the panel and the bottom plate, which causes the plastic parts between the weighing unit and the bottom plate to deform during the weighing process, thereby affecting the measurement accuracy and measurement response time.

[0006] The technical solution adopted in this application is:

[0007] An electromagnetic cooking appliance comprises a base and an upper shell arranged on the base to support a pot body, wherein the base is provided with a plurality of connecting posts connected to the upper shell around the base, and the base is also provided with a plurality of weighing units around the base, wherein the weighing units correspond to the connecting posts one by one and are arranged close to the connecting posts.

[0008] The electromagnetic cooking appliance in this application also includes the following additional technical features:

[0009] The base is provided with an installation groove for installing the weighing unit, the distance M between the installation groove and the connecting column is 5-20 mm, and the distance error between each installation groove and its corresponding connecting column does not exceed 2 mm.

[0010] The base is provided with a mounting groove for mounting the weighing unit, and the base is provided with a first convex rib arranged around the mounting groove and extending upward.

[0011] The base is provided with a second convex rib which is arranged around the circumference of the base and extends upward, and the second convex rib is connected to the first convex rib.

[0012] The base is provided with an installation slot for installing the weighing unit, and the weighing unit is detachably installed in the installation slot.

[0013] An upper boss and a lower boss are convexly arranged in the installation groove, and the weighing unit comprises a positioning frame, and the positioning frame is clamped between the upper boss and the lower boss.

[0014] A reinforcing rib connected to the lower boss and extending upward is also provided in the installation groove, and a deformation space exists between the reinforcing rib and the inner wall of the installation groove.

[0015] The weighing unit includes a pressure sensor and a weighing bracket located below the pressure sensor, the pressure sensor includes a positioning frame and a strain beam connected to the positioning frame, the positioning frame is connected to the base, and the strain beam is fixedly connected to the weighing bracket.

[0016] The weighing unit further comprises a supporting foot pad made of elastic material, which is arranged at the lower part of the weighing bracket and can be deformed along with the base to push the weighing bracket upward.

[0017] The strain beam includes a main body connected to the positioning frame and a cantilever beam connected to the main body, the cantilever beam is provided with a first positioning hole, the weighing bracket is provided with a second positioning hole, and the cantilever beam is connected to the weighing bracket via a fastener passing through the first positioning hole and the second positioning hole.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. In the present application, a plurality of weighing units are arranged along the circumference of the base, which can avoid the inaccurate detection result caused by local force on the one hand, and the phenomenon of being unable to measure caused by the failure of some weighing units on the other hand. The upper shell and the base in the present application are connected by a plurality of connecting columns, which can disperse the stress and reduce the stress concentration phenomenon in the process of bearing the pot body. The weighing units correspond to the connecting columns one by one and are arranged close to the connecting columns, which can shorten the distance between the weighing units and the connecting columns, so that the weighing units can sense the gravity change in time to improve the timeliness of the response, and the shortened distance can greatly reduce the probability of deformation of the plastic parts of the base between the weighing units and the connecting columns, which not only prolongs the service life of the base, but also ensures the accuracy of the measurement, and optimizes the weighing process. After the weight of the pot body is transferred to the base through the connecting column connected to the upper shell, the base part between the weighing unit and the connecting column is deformed, resulting in the weighing unit being unable to detect the gravity change in time, so that the measurement result can accurately reflect the gravity change, so as to provide a more accurate reference for the control unit to regulate the heating power and / or heating time.

[0020] 2. As a preferred embodiment of the present application, the base is provided with an installation groove for installing a weighing unit, which can realize a sunken arrangement of the weighing unit, so that the thickness of the base itself can be used to increase the height difference between the weighing unit and the electromagnetic heating assembly, which is conducive to the overall lightweight design of the electromagnetic cooking appliance.

[0021] As a preferred embodiment of the present application, the distance M between the installation groove for installing the weighing unit on the base and the connecting column is 5-20mm, and the distance error between each installation groove and its corresponding connecting column does not exceed 2mm. Such an arrangement, on the one hand, facilitates the processing and forming of the connecting column and the installation groove, and on the other hand, can make the weighing unit as close to the connecting column as possible to shorten the distance between the two as much as possible, further reduce the probability of deformation of the plastic parts of the base between the weighing unit and the connecting column, and can further improve the timeliness of the weighing unit sensing gravity changes. Furthermore, by limiting the distance between the installation groove and the connecting column, the position accuracy between the two can be ensured, thereby ensuring the measurement accuracy of the weighing unit.

[0022] 3. As a preferred embodiment of the present application, the base is provided with a first convex rib arranged around the mounting groove and extending upward. The setting of the first convex rib can play a role in structural reinforcement of the mounting groove and the base part around the mounting groove, so that when the upper shell body produces a small displacement in the up and down directions under the weight of the pot body and is transmitted to the bottom plate through the connecting column, the first convex rib can pull the mounting groove and its surrounding structure to avoid excessive deformation under the action of force, thereby further ensuring the measurement accuracy.

[0023] 4. As a preferred embodiment of the present application, the weighing unit is detachably mounted on the base, which facilitates the disassembly and replacement of the weighing unit to reduce repair and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 This is an exploded view of a partial structure of an electromagnetic cooking appliance in one embodiment of the present application;

[0026] Figure 2 A partial top view of a structure of an electromagnetic cooking device according to an embodiment of the present application;

[0027] Figure 3 This is an exploded view of a weighing unit in one embodiment of the present application;

[0028] Figure 4 A cross-sectional view of a partial structure of an electromagnetic cooking utensil in one embodiment of the present application;

[0029] Figure 5 for Figure 4 Enlarged view of part A.

[0030] in,

[0031] 1. Base; 11. Connecting column; 12. Mounting groove; 13. Upper boss; 14. Lower boss; 141. Lead-in slope; 15. First convex rib; 16. Second convex rib; 17. Reinforcing rib; 18. Deformation space;

[0032] 2. Electromagnetic heating assembly; 21. Wire drum rack; 22. Electromagnetic coil; 23. Magnetic conductive strip;

[0033] 3. Weighing unit; 31. Positioning frame; 32. Main body; 33. Cantilever beam; 331. First positioning hole; 34. Weighing bracket; 341. Second positioning hole; 35. Screw; 36. Support foot pad; 361. Support column; 362. Support foot; 37. Gap. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0036] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0039] like Figure 1 and Figure 2 As shown, an electromagnetic cooking appliance includes a base 1 and an upper shell arranged on the base 1 to support a pot body. A plurality of connecting columns 11 connected to the upper shell are arranged around the base 1. A plurality of weighing units 3 are also arranged around the base 1. The weighing units 3 correspond to the connecting columns 11 one by one and are arranged close to the connecting columns 11.

[0040] The electromagnetic cooking appliances in this application include but are not limited to ordinary induction cookers, IH electric hot pots, etc.

[0041] A control unit is also provided in the base 1 of the present application, and the weighing unit 3 is electrically connected to the control unit. The control unit can adjust the cooking power and / or heating time of the electromagnetic cooking appliance according to the detection signal transmitted by the weighing unit 3, so as to realize automatic adjustment of the cooking process, reduce or even eliminate the number of times of human participation in the adjustment of cooking power and heating time during the cooking process, and improve the user experience.

[0042] like Figure 1 and Figure 2 As shown, the base 1 of the present application is provided with an electromagnetic heating assembly 2, and the electromagnetic heating assembly 2 includes a wire drum frame 21 and an electromagnetic coil 22 wound on the wire drum frame 21. As a preferred embodiment of the present application, the electromagnetic heating assembly 2 also includes a plurality of magnetic conductive strips 23 radially distributed on the wire drum frame 21. Furthermore, the weighing unit 3 is arranged outside the projection area of ​​the electromagnetic heating assembly 2 on the base 1.

[0043] In the present application, a plurality of weighing units 3 are arranged along the circumference of the base 1, which can avoid the inaccurate detection result caused by local force on the one hand, and can avoid the phenomenon of being unable to measure caused by the failure of some weighing units 3 on the other hand. The upper shell in the present application is connected to the base 1 through a plurality of connecting columns 11, which can disperse the stress and reduce the stress concentration phenomenon in the process of bearing the pot body. The weighing units 3 correspond to the connecting columns 11 one by one and are arranged close to the connecting columns 11, which can shorten the distance between the weighing units 3 and the connecting columns 11, so that the weighing units 3 can sense the gravity change in time to improve the timeliness of the response, and the shortening of the distance can greatly reduce the probability of deformation of the plastic parts of the base 1 between the weighing units 3 and the connecting columns 11, which not only prolongs the service life of the base 1, but also ensures the accuracy of the measurement, so that the measurement result can accurately reflect the gravity change, and provide a more accurate reference for the control unit to adjust the heating power and / or heating time.

[0044] In a specific example, taking the cross-section of the base 1 as a substantially rectangular example, a weighing unit 3 is respectively arranged at the four corners or near the four corners inside the base 1, and the base 1 is connected to the upper shell through connecting columns 11 arranged at the four corners or adjacent to the four corners. Because the weighing unit 3 is close to the connecting column 11, the weighing unit 3 can timely sense the force transmitted from the upper shell to the base 11, thereby improving the response speed.

[0045] The specific configuration of the weighing unit 3 in the present application may adopt any one of the following embodiments:

[0046] Embodiment 1: The base 1 is provided with an installation position for installing the weighing unit 3, and the installation position extends and protrudes toward the inside of the base 1, so that the weighing unit 3 is arranged protrudingly. In order to rationalize the height distance between the weighing unit 3 and the electromagnetic heating component 2 and minimize the influence of the electromagnetic heating component 2 on the weighing unit 3 during operation, it is necessary to further raise the installation position of the electromagnetic heating component 2.

[0047] Implementation method 2: Figure 1 , Figure 4 and Figure 5 As shown, the base 1 is provided with a mounting groove 12 adapted to the weighing unit 3. The arrangement of the mounting groove 12 can realize the sinking arrangement of the weighing unit 3, so that the height difference between the weighing unit 3 and the electromagnetic heating component 2 can be increased by using the thickness of the base 1 itself, which is conducive to the overall light and thin design of the electromagnetic cooking appliance.

[0048] As a preferred embodiment of the second embodiment, Figure 2 As shown, the base 1 is provided with a mounting groove 12 for mounting the weighing unit 3, the distance M between the mounting groove 12 and the connecting column 11 is 5-20 mm, and the distance error between each mounting groove 12 and its corresponding connecting column 11 does not exceed 2 mm. Such an arrangement, on the one hand, facilitates the processing and forming of the connecting column 11 and the mounting groove 12, and on the other hand, allows the weighing unit 3 to be as close to the connecting column 11 as possible to shorten the distance between the two as much as possible, further reduces the probability of deformation of the plastic parts of the base 1 between the weighing unit 3 and the connecting column 11, and can further improve the timeliness of the weighing unit 3 sensing gravity changes. Furthermore, by limiting the distance between the mounting groove and the connecting column, the position accuracy between the two can be ensured, thereby ensuring the measurement accuracy of the weighing unit.

[0049] As a preferred embodiment of the second embodiment, Figure 1 As shown, the base 1 is provided with a first rib 15 arranged around the mounting groove 12 and extending upward. The provision of the first rib 15 can play a role in structural reinforcement of the mounting groove 12 and the portion of the base 1 around the mounting groove 12, so that when the upper shell body generates a small displacement in the up and down directions under the weight of the pot body and is transmitted to the bottom plate through the connecting column 11, the first rib 15 can pull the mounting groove 12 and its surrounding structure to prevent them from being excessively deformed under the action of the force, thereby further ensuring the measurement accuracy.

[0050] Furthermore, if Figure 1As shown, the base 1 is provided with a second convex rib 16 arranged around the circumference of the base 1 and extending upward, and the second convex rib 16 is connected to the first convex rib 15. In this arrangement, the second convex rib 16 extending along the circumference of the base 1 can be used to pull the first convex rib 15, further improving the ability of the first convex rib 15 to resist deformation, thereby improving the structural strength of the base 1 around the connecting column 11, greatly reducing the probability of the base 1 bearing deformation, thereby further ensuring the measurement accuracy.

[0051] As a preferred embodiment of the second embodiment, the weighing unit 3 is detachably mounted on the mounting groove 12. This facilitates the disassembly and replacement of the weighing unit 3, thereby reducing the repair and maintenance costs.

[0052] The connection between the weighing unit 3 and the base 1 can be any one of the following embodiments:

[0053] Embodiment 1: The weighing unit 3 includes a positioning frame 31, a positioning rib is protruding in the mounting groove 12, the positioning rib is provided with a first mounting hole, the positioning frame 31 is provided with a second mounting hole, and the positioning frame 31 is detachably connected to the positioning rib by fasteners passing through the first mounting hole and the second mounting hole.

[0054] Embodiment 2: The weighing unit 3 comprises a positioning frame 31, one of the positioning frame 31 and the inner wall of the mounting slot 12 is provided with a latch tongue, and the other is provided with a buckle position adapted to the latch tongue, and the positioning frame 31 is detachably connected to the base 1 via the latch tongue and the buckle position.

[0055] Example 3: Figure 4 and Figure 5 As shown, an upper boss 13 and a lower boss 14 are provided in the mounting groove 12, and the weighing unit 3 includes a positioning frame 31, which is clamped between the upper boss 13 and the lower boss 14. When the weight of the pot body carried by the upper shell changes, the upper shell will produce a small displacement in the up and down direction, and the small displacement is transmitted to the base 1 through the connecting column 11, and then transmitted to the upper boss 13 and the lower boss 14, so that the positioning frame 31 clamped between the upper boss 13 and the lower boss 14 moves downward relative to other structures of the weighing unit 3 under the action of gravity, so that the pressure of the weighing unit 3 changes accordingly, and the weighing unit 3 transmits the generated detection signal to the control unit, so that the control unit adjusts the corresponding heating power and / or heating time.

[0056] As a preferred example of this embodiment 3, Figure 5 As shown, the installation groove 12 is provided with an introduction slope 141 adjacent to the lower boss 14, and the positioning frame 31 is installed into the installation groove 12 from bottom to top along the introduction slope 141. The existence of the introduction slope 141 can guide the installation process of the positioning frame 31, facilitate the installation of the positioning frame 31, and improve the assembly efficiency.

[0057] As a preferred example of this embodiment 3, Figure 5 As shown, a reinforcing rib 17 connected to the lower boss 14 and extending upward is further provided in the mounting groove 12, and a deformation space 18 exists between the reinforcing rib 17 and the inner wall of the mounting groove 12. The existence of the deformation space 18, on the one hand, facilitates the installation of the positioning frame 31 from bottom to top between the lower boss 14 and the upper boss 13, and on the other hand, can enhance the deformation capacity of the reinforcing rib 17, thereby enhancing the anti-deformation capacity of the lower boss 14 connected to the reinforcing rib 17, avoiding the lower boss 14 and the reinforcing rib 17 from breaking under the action of force, thereby providing a guarantee for the measurement of the weighing unit 3.

[0058] like Figures 3 to 5 As shown, the weighing unit 3 includes a pressure sensor and a weighing bracket 34 located below the pressure sensor, the pressure sensor includes a positioning frame 31 and a strain beam connected to the positioning frame 31, the positioning frame 31 is connected to the base 1, and the strain beam is fixedly connected to the weighing bracket 34. Furthermore, the weighing unit 3 also includes a supporting foot pad 36 made of elastic material, which is arranged at the bottom of the weighing bracket 34 and can be deformed with the base 1 to push the weighing bracket 34 upward.

[0059] In a specific example, Figures 3 to 5 As shown, the strain beam is located inside the positioning frame 31, the weighing bracket 34 is located below the pressure sensor, the weighing sensor is provided with a mounting hole for installing a supporting foot pad 36, the supporting foot pad 36 has a supporting column 361 which is interference fit with the mounting hole and a supporting foot 362 connected to the supporting column 361. Such an arrangement can make the structure of the weighing unit 3 compact and make the installation space occupied by the weighing unit 3 smaller, so that the weighing unit 3 and the electromagnetic heating component 2 can be reasonably arranged within the limited space of the base 1.

[0060] As a preference, Figure 5 As shown, the mounting groove 12 is a through groove, that is, the mounting groove 12 passes through the base 1, so that the support leg 362 of the support pad 36 can contact the tabletop for supporting the electromagnetic cooking device. The support pad 36 is a structure made of elastic materials such as silicone or rubber. When the weight of the pot body supported by the upper shell changes, the upper shell will produce a small displacement in the up and down directions. The small displacement is transmitted to the base 1 through the connecting column 11, and is transmitted to the positioning frame 31 and the support pad 36 through the base 1. The positioning frame 31 moves downward relative to the strain beam, and the support pad 36 is subjected to the reaction force of the tabletop to push the weighing bracket 34 upward, so that the weighing bracket 34 moves upward relative to the strain beam. Under the two-way clamping, the strain beam is deformed, so that its resistance value changes. By measuring the change in resistance value, it can be converted into a corresponding strain value and transmitted to the control unit.

[0061] The strain beam includes a main body 32 connected to the positioning frame 31, and a cantilever beam 33 fixedly connected to the main body 32. The cantilever beam 33 is fixedly connected to the weighing bracket 34, and there is a gap 37 between the cantilever beam 33 and the positioning frame 31. Preferably, the cantilever beam 33 is provided with a first positioning hole 331, and the weighing bracket 34 is provided with a second positioning hole 341. The cantilever beam 33 is detachably connected to the weighing bracket 34 by fasteners (such as screws 35) penetrating the first positioning hole 331 and the second positioning hole 341.

[0062] like Figure 3 As shown, in a preferred embodiment, there are two cantilever beams 33, which are respectively located on both sides of the main body 32. By providing two cantilever beams 33, the overall force can be more uniform, avoiding damage due to stress concentration.

[0063] Furthermore, if Figure 3 As shown, the main body 32 includes a transverse extension section and a longitudinal extension section, two cantilever beams 33 are respectively connected to the transverse extension section, and the two cantilever beams 33 are arranged in parallel, and the longitudinal extension section is connected to the positioning frame 31, so that the strain beam is in a mountain shape as a whole. Of course, the structural shape of the strain beam in the present application is not limited to this, and can also be V-shaped, U-shaped, etc.

[0064] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0065] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0066] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An electromagnetic cooking appliance, comprising a base and an upper shell provided on the base to carry a pot body, wherein a plurality of connecting columns connected to the upper shell are provided around the base, characterized in that: A plurality of weighing units are also arranged around the base, and the weighing units correspond to the connecting columns one by one and are arranged close to the connecting columns.

2. The electromagnetic cooking device according to claim 1, characterized in that: The base is provided with an installation groove for installing the weighing unit, the distance M between the installation groove and the connecting column is 5-20 mm, and the distance error between each installation groove and its corresponding connecting column does not exceed 2 mm.

3. The electromagnetic cooking device according to claim 1, characterized in that: The base is provided with a mounting groove for mounting the weighing unit, and the base is provided with a first convex rib arranged around the mounting groove and extending upward.

4. The electromagnetic cooking device according to claim 3, characterized in that: The base is provided with a second convex rib which is arranged around the circumference of the base and extends upward, and the second convex rib is connected to the first convex rib.

5. The electromagnetic cooking device according to claim 1, characterized in that: The base is provided with an installation slot for installing the weighing unit, and the weighing unit is detachably installed in the installation slot.

6. The electromagnetic cooking device according to claim 5, characterized in that: An upper boss and a lower boss are convexly arranged in the installation groove, and the weighing unit comprises a positioning frame, and the positioning frame is clamped between the upper boss and the lower boss.

7. The electromagnetic cooking device according to claim 6, characterized in that: A reinforcing rib connected to the lower boss and extending upward is also provided in the installation groove, and a deformation space exists between the reinforcing rib and the inner wall of the installation groove.

8. An electromagnetic cooking device according to any one of claims 1 to 7, characterized in that: The weighing unit includes a pressure sensor and a weighing bracket located below the pressure sensor, the pressure sensor includes a positioning frame and a strain beam connected to the positioning frame, the positioning frame is connected to the base, and the strain beam is fixedly connected to the weighing bracket.

9. The electromagnetic cooking device according to claim 8, characterized in that: The weighing unit further comprises a supporting foot pad made of elastic material, which is arranged at the lower part of the weighing bracket and can be deformed along with the base to push the weighing bracket upward.

10. The electromagnetic cooking device according to claim 8, characterized in that: The strain beam includes a main body connected to the positioning frame and a cantilever beam connected to the main body, the cantilever beam is provided with a first positioning hole, the weighing bracket is provided with a second positioning hole, and the cantilever beam is connected to the weighing bracket via a fastener passing through the first positioning hole and the second positioning hole.

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