Heating structure and cooking utensil

Abstract

The utility model relates to a heating structure and a cooking utensil, and the heating structure comprises a supporting assembly which is internally provided with a heating space, and the heating space is provided with a first end and a second end which are oppositely arranged in a first direction; the first heating piece is bonded to the outside of the supporting assembly, the limiting piece is arranged on the supporting assembly and provided with a limiting part, and at least part of the projection of the first heating piece in the first direction is located on the limiting piece. When the viscosity between the first heating piece and the supporting assembly is reduced, the first heating piece slides down in the gravity direction under the action of gravity, and the first heating piece is prevented from continuously sliding down through the limiting part. Meanwhile, the limiting part is also located between the first end and the second end, so that after the first heating piece abuts against the limiting part, the first heating piece is still located at the position close to the middle of the heating space, and at the moment, the first heating piece can continue to heat food to be heated in the middle or on the upper portion of the heating space; and the cooking effect on the food in the heating space cannot be influenced.

Description

Technical Field

[0001] The present application relates to the technical field of cooking appliances, and particularly to a heating structure and a cooking appliance. Background Art

[0002] An electric rice cooker, also known as an electric pot, is a cooking utensil that converts electrical energy into heat energy. It has multiple operating functions such as steaming, boiling, stewing, simmering, and braising food. Compared with other cooking appliances, the electric rice cooker is more energy-saving, convenient, safe, and reliable. Moreover, the electric rice cooker can not only cook food thoroughly but also keep it warm. It is clean, hygienic, pollution-free, time-saving, and labor-saving, and is one of the indispensable utensils for modern household chores.

[0003] Currently, when cooking rice in an electric rice cooker, in order to ensure a consistent taste of the rice inside the electric rice cooker, in addition to having a heating plate at the bottom of the electric rice cooker, a side heating wire assembly is also provided on the inner wall of the electric rice cooker. However, currently, the side heating assembly is usually installed by bonding. After long-term use of the electric rice cooker, the side heating wire may slide down or fall off, thus affecting the heating effect on the rice and resulting in the rice cooked by the electric rice cooker being too hard or too soft in taste. Summary of the Invention

[0004] Based on this, in view of the problem that the side heating wire may slide down or fall off after long-term use of the electric rice cooker, it is necessary to provide a heating structure and a cooking appliance.

[0005] A heating structure includes:

[0006] A support assembly having a heating space inside, and the heating space has a first end and a second end oppositely arranged in a first direction;

[0007] A first heating element bonded to the outside of the support assembly and located between the first end and the second end;

[0008] A limiting member provided on the support assembly and having a limiting portion, the limiting portion being located between the first end and the second end, and at least a part of the projection of the first heating element in the first direction is located on the limiting member;

[0009] Wherein, when the heating structure is working, the first direction is parallel to the gravity direction, and the limiting portion is located below the first heating element in the gravity direction.

[0010] In one embodiment, in the first direction, the first heating element and the limiting portion are spaced apart.

[0011] In one embodiment, the heating structure further includes a contact sensor, and the contact sensor is provided on a side of the limiting portion facing the first heating element;

[0012] The contact sensor and the first heating element are arranged at intervals along the first direction, and a part of the projection of the first heating element in the first direction is located on the contact sensor.

[0013] In one embodiment, the limiting portion abuts against the outside of the support assembly.

[0014] In one embodiment, the first heating element is arranged around the circumference of the heating space;

[0015] There are multiple limiting members, and the limiting portions of all the limiting members are arranged at intervals around the circumference of the heating space.

[0016] In one embodiment, in the circumferential direction of the heating space, the limiting portions of all the limiting members are arranged non-uniformly.

[0017] In one embodiment, in the circumferential direction of the heating space, for two adjacent limiting portions, a connection line between one of the limiting portions and the axis of the heating space is defined as a first line segment, the first line segment is perpendicular to the axis of the heating space, a connection line between the other limiting portion and the axis of the heating space is defined as a second line segment, the second line segment is perpendicular to the axis of the heating space, and the axial direction of the heating space is parallel to the first direction;

[0018] The angle a formed by the first line segment and the second line segment satisfies: (360° / n) - 30° < a < (360° / n) + 30°, where n is the number of the limiting portions.

[0019] In one embodiment, the support assembly includes a support ring and an outer pot, the heating space is formed inside the outer pot, the outer pot is arranged on the support ring, and the support ring is arranged around the circumference of the outer pot, the first heating element is bonded to the circumferential side wall of the outer pot, and each limiting member is installed on the support ring.

[0020] In one embodiment, the outer pot is detachably installed on the support ring.

[0021] In one embodiment, the limiting member further includes a connecting portion and a mounting portion, the limiting portion and the mounting portion are respectively arranged at two ends of the connecting portion in the first direction, and the limiting portion is installed on the support ring.

[0022] In one embodiment, a connecting hole is formed in the mounting portion, a threaded hole is formed in the support ring, and the heating structure further includes a connecting screw, and the connecting screw passes through the connecting hole and is in threaded connection with the threaded hole.

[0023] In one embodiment, the support ring includes a ring body and a screw post. One end of the screw post is mounted on the ring body, and the other end is provided with the threaded hole.

[0024] In one embodiment, the support ring further includes a platform. The platform is provided on the ring body, and the end of the screw post away from the threaded hole is provided on the platform.

[0025] A cooking appliance includes the heating structure as described in any one of the above.

[0026] In one embodiment, the cooking appliance further includes an inner pot. The heating structure further includes a second heating element. Both the inner pot and the second heating element are provided in the heating space. The inner pot has an opening communicating with the inside, and the opening is provided at the first end of the heating space. The second heating element is provided on a support assembly and is located at the second end of the heating space.

[0027] In the above cooking appliance, when the adhesion between the first heating element and the support assembly decreases, the first heating element will slide along the direction of gravity under the action of gravity. Due to the limiting part provided below the first heating element, the first heating element will contact the limiting part during the sliding process, and the limiting part is used to prevent the first heating element from continuing to slide. At the same time, since the limiting part is also located between the first end and the second end, after the first heating element abuts against the limiting part, the first heating element is still in a position close to the middle of the heating space. At this time, the first heating element can continue to heat the food to be heated in the middle or upper part of the heating space, and will not affect the cooking effect of the food in the heating space. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the heating structure in some embodiments of the present application.

[0029] Figure 2 It is Figure 1 A schematic cross-sectional view of the heating structure in the embodiment.

[0030] Figure 3 It is Figure 1 A schematic structural diagram of the limiting member in the embodiment.

[0031] Figure 4 It is Figure 1 A schematic structural diagram of the heating structure in another perspective in the embodiment.

[0032] Figure 5 It is Figure 1 A top view of the heating structure in the embodiment.

[0033] Figure 6 It is Figure 1Schematic structural diagram of the component installed in the outer pot in the embodiment.

[0034] Figure 7 For Figure 1 Schematic structural diagram of the first heating element in the embodiment.

[0035] Figure 8 For Figure 1 Schematic structural diagram of the support ring in the embodiment.

[0036] Figure 9 For Figure 1 Schematic structural diagram of the support ring from another perspective in the embodiment.

[0037] Explanation of the reference numerals:

[0038] Support assembly 10; heating space 11; first end 12; second end 13; support ring 14; outer pot 15; threaded hole 16; ring body 17; screw post 18; platform 19;

[0039] First heating element 20; heating wire 21; bonding part 22;

[0040] Limiting part 30; limiting portion 31; first line segment 32; second line segment 33; connecting part 34; mounting part 35; connecting hole 36;

[0041] Connecting screw 40; second heating element 41; inner pot 42;

[0042] First direction X; Detailed implementation manners

[0043] To make the above objects, features, and advantages of the present application more apparent and understandable, the following describes the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0044] In the description of the present application, it should be understood that if there appear such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present application.

[0045] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0046] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In this application, unless otherwise clearly defined and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0048] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0049] Current rice cookers generally include an inner pot, an outer pot and a heating plate. The heating plate is installed at the bottom of the outer pot, and the inner pot for cooking rice is placed in the inner cavity of the outer pot. When the rice cooker is cooking rice, the heating plate at the bottom of the outer pot generates heat, and the heat generated by the heating plate is transferred to the inner pot through the outer pot, and finally the heat is transferred to the rice-water mixture in the inner pot. After the rice-water mixture absorbs enough heat, it becomes rice.

[0050] During the process of cooking rice with a rice cooker adopting the above heating mode, since the heat generated by the heating plate is first transferred to the bottom of the inner pot and then gradually radiates upward from the bottom of the inner pot, the rice at the bottom of the inner pot is overheated, resulting in a hard texture and being prone to burning, while the rice in the middle or upper part of the inner pot is underheated, resulting in excessive water content and a soft texture.

[0051] In order to ensure that the rice in the inner pot is evenly heated in the upper, middle, and lower parts, some rice cookers are provided with a side heating wire assembly on the outer side wall of the outer pot. The side heating wire assembly is arranged near the upper-middle part of the inner pot, so as to perform heat radiation on the rice in the upper-middle part of the inner pot, ensuring that the rice in the upper-middle part can also absorb sufficient heat, so that the overall texture of the rice cooked by the rice cooker remains consistent.

[0052] Among them, the side heating wire assembly usually consists of a side heating wire and tin foil. The side heating wire is arranged on the inner side surface of the tin foil, and the inner side surface of the tin foil has adhesiveness, and the side heating wire can be adhered to the outer side wall of the outer pot through the tin foil. That is, the side heating wire assembly is installed on the outer pot by an adhesive method. Compared with the installation method of bolts, the adhesive method does not have fasteners such as screws, ensuring the flatness of the inner surface of the outer pot and facilitating the installation of the inner pot.

[0053] However, after the rice cooker is used for a long time, the adhesiveness of the inner side surface of the tin foil will gradually decrease, resulting in the separation of the side heating wire assembly from the outer pot, and then the side heating wire assembly gradually slides down, or even directly falls to the bottom of the outer pot.

[0054] If the side heating wire assembly slides down or falls off, it will cause the side heating wire assembly to be unable to continue heating the rice in the upper-middle part of the inner pot, affecting the texture of the rice in the upper-middle part of the inner pot. At the same time, it will also cause the rice at the bottom of the inner pot to receive more heat, making the rice at the bottom of the inner pot more prone to burning.

[0055] Based on this, referring to Figure 1 、 Figure 2 and Figure 3 A heating structure provided in an embodiment of the present application includes a support assembly 10, a first heating element 20, and a limiting member 30. The support assembly 10 has a heating space 11 inside. The heating space 11 can be directly used to accommodate the food to be heated, or the heating space 11 can be used to accommodate a heating appliance, and the heating appliance located inside the heating space 11 contains the food to be heated.

[0056] The heating space 11 has a relatively arranged first end 12 and a second end 13 in the first direction X. The first heating element 20 is bonded to the outside of the support assembly 10 and is located between the first end 12 and the second end 13, that is, the first heating element 20 corresponds to the side of the heating space 11. When food to be heated is stored inside the heating space 11, the heat generated by the first heating element 20 acts on the side of the heating space 11, so as to be able to heat the middle or upper part of the heating space 11, so that the food to be heated in the heating space 11 can be fully heated.

[0057] The limiting member 30 is arranged on the support assembly 10 and has a limiting portion 31. The limiting portion 31 is located between the first end 12 and the second end 13. At least part of the projection of the first heating element 20 in the first direction X is located on the limiting member 30. Wherein, when the heating structure is working, the first direction X is parallel to the gravity direction, and the limiting portion 31 is located below the first heating element 20 in the gravity direction, so as to limit the position of the first heating element 20 through the limiting portion 31, so as to ensure that the first heating element 20 is always in the position on the side of the heating space 11, so that the heat dissipated by the first heating element 20 can always act on the middle or upper part of the heating space 11, so as to ensure the heating effect of the food to be heated in the heating space 11.

[0058] Specifically, when the viscosity between the first heating element 20 and the support assembly 10 decreases, the first heating element 20 will slide down along the gravity direction under the action of gravity. Due to the limiting portion 31 arranged below the first heating element 20, the first heating element 20 will contact the limiting portion 31 during the sliding process, and the limiting portion 31 is used to prevent the first heating element 20 from continuing to slide. At the same time, since the limiting portion 31 is also located between the first end 12 and the second end 13, after the first heating element 20 abuts against the limiting portion 31, the first heating element 20 is still in a position close to the middle of the heating space 11. At this time, the first heating element 20 can continue to heat the food to be heated in the middle or upper part of the heating space 11, and will not affect the cooking effect of the food in the heating space 11.

[0059] In some embodiments of the present application, refer to Figure 4 and Figure 5 , the first heating element 20 includes a heating wire 21 and an adhesive member 22. One side of the adhesive member 22 has viscosity to be bonded to the outside of the support assembly 10, and the heating wire 21 is arranged on the side of the adhesive member 22 with viscosity. When the adhesive member 22 is bonded to the outside of the support assembly 10, the heating wire 21 is located between the adhesive member 22 and the outer surface of the support assembly 10, so as to fix the heating wire 21 to the outside of the support assembly 10 through the adhesive member 22.

[0060] Among them, since the heating wire 21 is relatively soft and easily broken, in order to prevent the heating wire 21 from being pressed due to the pressure on it, in the first direction X, the first heating element 20 and the limiting part 31 are arranged at intervals. When the heating structure is in normal use, the first heating element 20 and the limiting part 31 are in a separated state from each other, so as to prevent the limiting part 31 from pressing on the first heating element 20 for a long time and causing damage to the heating wire 21 inside the first heating element 20.

[0061] It can be understood that in some other embodiments, the first heating element 20 can also be a structure such as a thermocouple that is not easily deformed. At this time, the limiting part 31 can be in direct contact with the first heating element 20 to prevent the first heating element 20 from slipping.

[0062] In some embodiments of the present application, the heating structure further includes a contact sensor. The contact sensor is arranged on the side of the limiting part 31 facing the first heating element 20, and the contact sensor and the first heating element 20 are arranged at intervals in the first direction X. The projection of the first heating element 20 in the first direction X is partially located on the contact sensor. The contact sensor is used to timely send out an alarm signal when the first heating element 20 slips, so as to prompt the user to perform maintenance.

[0063] Specifically, during the normal use process of the heating structure, the first heating element 20 and the limiting part 31 are arranged at intervals from each other. At this time, the contact sensor is also separated from the first heating element 20. Therefore, when the heating structure is in normal use, the contact sensor is in an untriggered state.

[0064] When the first heating element 20 slips off the support assembly 10, the first heating element 20 will contact the limiting part 31 and also contact the contact sensor at the same time. The contact sensor is triggered, and then an alarm signal is sent out. The alarm signal can be an indicator light, etc., to prompt the user that the first heating element 20 needs to be repaired. After the user re-fixes the first heating element 20, the first heating element 20 is separated from the contact sensor and the limiting part 31, and the contact sensor stops sending signals, and the heating structure can continue to be used normally.

[0065] In some embodiments of the present application, the support assembly 10 includes a support ring 14 and an outer pot 15. The outer pot 15 is arranged on the support ring 14. A heating space 11 is formed inside the outer pot 15. The first heating element 20 is bonded to the circumferential side wall of the outer pot 15. The limiting member 30 is installed on the support ring 14. The support ring 14 can not only play a role in fixing the outer pot 15 and the limiting member 30, but also can play a role in installing wire harnesses or other components.

[0066] Among them, the outer pot 15 is detachably mounted on the support ring 14, so that the user can detach the outer pot 15 and the first heating element 20 on the outer pot 15 from the support ring 14 together for maintenance. Specifically, when the first heating element 20 slides down and causes the first heating element 20 to come into contact with the contact sensor, the contact sensor emits an alarm signal to prompt the user, and the user can then remove the outer pot 15, thereby refixing the position of the first heating element 20 to ensure the normal operation of the first heating element 20.

[0067] In some embodiments of the present application, the first heating element 20 is composed of a heating wire 21 and an adhesive member 22. The adhesive member 22 is usually a relatively thin and light component such as tinfoil. Therefore, during the sliding process of the first heating element 20, if there is a gap between the limiting portion 31 and the support assembly 10, the first heating element 20 will continue to slide through the gap between the limiting portion 31 and the support assembly 10, and thus slide to the bottom of the support assembly 10. At this time, the limiting member 30 cannot play a role in limiting the first heating element 20.

[0068] Therefore, the limiting portion 31 abuts against the outside of the support assembly 10, thereby avoiding the generation of a gap between the limiting portion 31 and the support assembly 10. Specifically, the support assembly 10 includes an outer pot 15 and a support ring 14. The first heating element 20 is adhered to the outer side surface of the outer pot 15, and at the same time, the limiting portion 31 also abuts against the outer side surface of the outer pot 15, thereby preventing the first heating element 20 from sliding through the gap between the limiting portion 31 and the outer pot 15.

[0069] In some embodiments of the present application, in order to enable all parts in the heating space 11 to be evenly heated, the first heating element 20 is arranged around the circumference of the heating space 11, so that the heat generated by the first heating element 20 can be transferred to all parts of the heating space 11. Specifically, the first heating element 20 is annular, and the annular first heating element 20 is adhered to the outer side surface of the outer pot 15.

[0070] And in order to ensure the limiting effect on the first heating element 20, there are also multiple limiting members 30. The limiting portions 31 of all the limiting members 30 are arranged at intervals around the circumference of the heating space 11, so as to simultaneously limit and support the first heating element 20 through the multiple limiting portions 31 of the multiple limiting members 30. Even if the first heating element 20 shows a sliding phenomenon, the multiple limiting portions 31 can still provide a stable support for the first heating element 20 to ensure the heating effect of the first heating element 20.

[0071] In some embodiments, each limiting member 30 is mounted on the support ring 14. Since there are often other components on the support ring 14, in order not to occupy the heating space 11 of other components on the support ring 14, in the circumferential direction of the heating space 11, the limiting portions 31 of all the limiting members 30 are unevenly arranged to avoid other components on the support ring 14.

[0072] Among them, the non-uniform layout means that the angle formed between two adjacent limiting parts 31 in one group is different from the angle formed between at least two adjacent limiting parts 31 in at least one other group. Specifically, in the circumferential direction of the heating space 11, among two adjacent limiting parts 31, the connection line between one limiting part 31 and the axis of the heating space 11 is defined as the first line segment 32, the first line segment 32 is perpendicular to the axis of the heating space 11, the axis direction of the heating space 11 is parallel to the first direction X, the connection line between the other limiting part 31 and the axis of the heating space 11 is defined as the second line segment 33, the second line segment 33 is perpendicular to the axis of the heating space 11, and the angle α formed by the first line segment 32 and the second line segment 33, this angle α is the angle between the two adjacent limiting parts 31.

[0073] All the limiting parts 31 are non-uniformly arranged in the circumferential direction of the heating space 11, that is, the angle α formed between one group of limiting parts 31 is different from the angle α formed between at least one other group of two adjacent limiting parts 31.

[0074] Among them, in order to avoid other components while ensuring the supporting and limiting effects of the limiting part 31 on the first heating element 20, the angle α satisfies: 360° / n - 30° < α < 360° / n + 30°, where n is the number of the limiting parts 31.

[0075] Specifically, in one embodiment, as Figure 7 shown, the heating structure is provided with 3 limiting pieces, that is, n = 3, and the angle requirement between the first line segment 32 and the second line segment 33 is: 90° < α < 150°. The angle between the first line segment 32 and the second line segment 33 represents the angle between two adjacent limiting parts 31. By restricting the angle between two adjacent limiting parts 31, multiple limiting parts 31 can be evenly distributed under the first heating element 20. When the first heating element 20 slides off, a good supporting effect can be achieved through multiple limiting parts 31.

[0076] In some other embodiments, as Figure 6 shown, the heating element can also be provided with 4 limiting pieces, and the number of the limiting pieces can be selected according to actual needs and is not limited herein.

[0077] In some embodiments of the present application, refer to Figure 8 and Figure 9, in order to enable the limiting portion 31 to extend below the first heating element 20, the limiting member 30 includes a connecting portion 34 and a mounting portion 35. The limiting portion 31 and the mounting portion 35 are respectively arranged at both ends of the connecting portion 34 in the first direction X. The connecting portion 34 is mounted on the support ring 14. By increasing the length of the entire limiting member 30 through the connecting portion 34, the limiting portion 31 can extend below the first heating element 20.

[0078] Specifically, the limiting portion 31 and the mounting portion 35 are also respectively located on opposite sides of the connecting portion 34 in the second direction. The second direction intersects the first direction X, so that the entire limiting member 30 is in a "Z" shape. The mounting portion 35 is arranged on the support ring 14, and the first heating element 20 is located below the support ring 14. Through the "Z"-shaped limiting member 30, the limiting portion 31 can extend below the first heating element 20 to limit and support the first heating element 20.

[0079] In some embodiments, a connection hole 36 is formed in the mounting portion 35, a threaded hole 16 is formed in the support ring 14, and the heating structure further includes a connection screw 40. The connection screw 40 passes through the connection hole 36 and is threadedly connected to the threaded hole 16, so that the limiting member 30 is fixed to the support ring 14 through the connection screw 40. Optionally, the limiting member 30 is made of a metal material, and the limiting member 30 made of a metal material can better cooperate with the installation of the connection screw 40 and is not easily damaged.

[0080] Specifically, the support ring 14 includes a ring body 17 and a screw post 18. One end of the screw post 18 is mounted on the ring body 17, and the other end is provided with a threaded hole 16. By means of the screw post 18, the distance between the mounting portion 35 and the ring body 17 can be increased, so that the limiting portion 31 of the limiting member 30 can more easily extend below the first heating element 20.

[0081] If the length of the screw post 18 is too long, the screw post 18 is likely to break. For this reason, in a specific embodiment, the support ring 14 further includes a platform 19. The platform 19 is arranged on the ring body 17, and the end of the screw post 18 away from the threaded hole 16 is arranged on the platform 19 to ensure the installation position of the limiting member 30 through the platform 19, and at the same time, the screw post 18 will not be too long and break.

[0082] This application also provides a cooking appliance, including the heating structure in any of the above embodiments. Optionally, the cooking appliance is a rice cooker, and in some other embodiments, the cooking appliance can also be an air fryer or other devices for heating food.

[0083] In some embodiments of the present application, the cooking appliance further includes an inner pot 42, and the heating structure further includes a second heating element 41. Both the inner pot 42 and the second heating element 41 are disposed in the heating space 11. The inner pot 42 has an opening communicating with the interior, and the opening is disposed at the first end 12 of the heating space 11. The second heating element 41 is disposed on the support assembly and is located at the second end 13 of the heating space 11.

[0084] Specifically, the inner pot 42 is disposed in the outer pot 15, and the second heating element 41 is disposed in the outer pot 15 and is located at the bottom of the inner pot 42. The food to be heated is placed into the inner pot 42 through the opening at the top of the inner pot 42. The first heating element 20 and the second heating element 41 are used together. The bottom of the inner pot 42 is heated by the second heating element 41, and the side wall of the inner pot 42 is heated by the first heating element 20, so that all parts of the food in the inner pot 42 can be fully heated, ensuring the taste of the food.

[0085] The above heating structure has at least the following advantages:

[0086] When the adhesion between the first heating element 20 and the support assembly 10 decreases, the first heating element 20 will slide along the direction of gravity under the action of gravity. Due to the limiting portion 31 disposed below the first heating element 20, the first heating element 20 will contact the limiting portion 31 during the sliding process, and the limiting portion 31 is used to prevent the first heating element 20 from continuing to slide. At the same time, since the limiting portion 31 is also located between the first end 12 and the second end 13, after the first heating element 20 abuts against the limiting portion 31, the first heating element 20 is still in a position close to the middle of the heating space 11. At this time, the first heating element 20 can continue to heat the food to be heated in the middle or upper part of the heating space 11, without affecting the cooking effect of the food in the heating space 11.

[0087] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0088] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A heating structure, characterized in that: The heating structure includes: A support assembly (10) having a heating space (11) therein, the heating space (11) having a first end (12) and a second end (13) oppositely arranged in a first direction (X); A first heating element (20) bonded to the outside of the support assembly (10) and located between the first end (12) and the second end (13); A limiting member (30) provided on the support assembly (10) and having a limiting portion (31), the limiting portion (31) being located between the first end (12) and the second end (13), and at least a part of the projection of the first heating element (20) in the first direction (X) being located on the limiting member (30); Wherein, when the heating structure is working, the first direction (X) is parallel to the gravity direction, and the limiting portion (31) is located below the first heating element (20) in the gravity direction; 2. The heating structure according to claim 1, characterized in that: In the first direction (X), the first heating element (20) and the limiting portion (31) are arranged at intervals; 3. The heating structure according to claim 2, characterized in that: The heating structure further includes a contact sensor provided on the side of the limiting portion (31) facing the first heating element (20); The contact sensor and the first heating element (20) are arranged at intervals along the first direction (X), and a part of the projection of the first heating element (20) in the first direction (X) is located on the contact sensor; 4. The heating structure according to claim 1, characterized in that: The limiting portion (31) is in abutment with the outside of the support assembly (10); 5. The heating structure according to claim 1, characterized in that: The first heating element (20) is arranged around the circumference of the heating space (11); There are a plurality of the limiting members (30), and the limiting portions (31) of all the limiting members (30) are arranged at intervals around the circumference of the heating space (11); 6. The heating structure according to claim 5, characterized in that: In the circumferential direction of the heating space (11), the limiting portions (31) of all the limiting members (30) are arranged unevenly; 7. The heating structure according to claim 5, characterized in that: In the circumferential direction of the heating space (11), for two adjacent limiting portions (31), a connecting line between one of the limiting portions (31) and the axis of the heating space (11) is defined as a first line segment (32), the first line segment (32) being perpendicular to the axis of the heating space (11), and a connecting line between the other limiting portion (31) and the axis of the heating space (11) is defined as a second line segment (33), the second line segment (33) being perpendicular to the axis of the heating space (11), and the axis direction of the heating space (11) is parallel to the first direction (X); An angle a formed by the first line segment (32) and the second line segment (33) satisfies: (360° / n)-30° < a < (360° / n)+30°, where n is the number of the limiting portions (31).

8. The heating structure according to claim 5, characterized in that: The support assembly (10) comprises a support ring (14) and an outer pot (15); the heating space (11) is formed inside the outer pot (15); the outer pot (15) is arranged on the support ring (14), and the support ring (14) is arranged around the circumference of the outer pot (15); the first heating element (20) is bonded to the circumferential side wall of the outer pot (15); and each of the limiting elements (30) is installed on the support ring (14).

9. The heating structure according to claim 8, characterized in that: The outer pot (15) is detachably mounted on the support ring (14).

10. The heating structure according to claim 8, characterized in that: The limiting member (30) further comprises a connecting portion (34) and a mounting portion (35); the limiting portion (31) and the mounting portion (35) are respectively arranged at two ends of the connecting portion (34) in the first direction (X); and the limiting portion (31) is mounted on the supporting ring (14).

11. The heating structure according to claim 10, characterized in that: The mounting portion (35) is provided with a connecting hole (36), the support ring (14) is provided with a threaded hole (16), and the heating structure further comprises a connecting screw (40), the connecting screw (40) being passed through the connecting hole (36) and being threadedly connected to the threaded hole (16).

12. The heating structure according to claim 11, characterized in that: The support ring (14) comprises a ring body (17) and a screw column (18); one end of the screw column (18) is mounted on the ring body (17), and the other end is provided with the threaded hole (16).

13. The heating structure according to claim 12, characterized in that: The support ring (14) further comprises a platform (19), wherein the platform (19) is arranged on the ring body (17), and an end of the screw column (18) away from the threaded hole (16) is arranged on the platform (19).

14. A cooking utensil, characterized in that: Comprising the heating structure according to any one of claims 1-13.

15. The cooking appliance according to claim 14, characterized in that The cooking device further comprises an inner pot (42), and the heating structure further comprises a second heating element (41). The inner pot (42) and the second heating element (41) are both arranged in the heating space (11), and the inner pot (42) has an opening connected to the interior, and the opening is arranged at a first end (12) of the heating space (11). The second heating element (41) is arranged on the supporting assembly (10) and is located at a second end (13) of the heating space (11).

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