Cooking equipment with steaming function

Abstract

The utility model relates to a cooking device with a steaming function, which comprises an inner container, a steaming device, a steaming device and a steaming device, wherein an annular mounting groove is formed in the inner bottom wall of the inner container; a heating plate; the threaded pieces are fixedly arranged on the outer bottom wall of the heating disc and penetrate through the bottom wall of the annular mounting groove; the nuts are arranged corresponding to the threaded pieces; the elastic sealing ring comprises an annular sleeving part and an annular abutting part, and the annular sleeving part is arranged on the edge of the plate opening of the heating plate in an interference sleeving mode; the annular abutting part comprises a connecting part connected to the annular sleeving part, a first ring, a second ring and a third ring, the first ring, the second ring and the third ring are all arranged on the bottom side of the connecting part in a protruding mode, the second ring surrounds the first ring at intervals, and the third ring surrounds the second ring at intervals; a buffer groove is formed in each part, close to the threaded piece, of the third ring; and in the state that all the nuts are tightened, the first ring, the second ring and the third ring abut against the bottom wall of the annular mounting groove. The cooking equipment is beneficial for preventing the part, sleeving the edge of the heating disc opening and close to the threaded piece, of the elastic sealing ring from tilting upwards.

Description

Technical Field

[0001] This application relates to the field of kitchenware technology, and in particular to cooking equipment with steaming function. Background Technology

[0002] Steam ovens, steam ovens, microwave-steam-grill combos, and stove-steam-grill combos all have steaming functions. One way these appliances achieve this is by installing a heating plate on the bottom wall of the inner pot, with a heating element below it. Water is added to the heating plate, and the heating element is activated, causing the water to evaporate into high-temperature steam, which then cooks the food. These appliances also feature a flexible sealing ring. An annular mounting groove is located on the inner bottom wall of the inner pot. Part of the flexible sealing ring fits around the edge of the heating plate, while the other part resides within the annular mounting groove. Multiple threaded components are fixed to the bottom wall of the heating plate, each passing through the bottom wall of the annular mounting groove. Below the bottom wall of the annular mounting groove are multiple nuts that match the threaded components. These threaded components can be bolts or studs. Tightening these nuts presses the flexible sealing ring against the bottom wall of the annular mounting groove, sealing the gap between the heating plate and the bottom wall of the inner pot. This prevents water and air leaks, ensuring the appliance functions properly and protecting the electrical components beneath the inner pot. However, the elastic sealing ring is subjected to uneven force. The part of the elastic sealing ring closer to the threaded part is subjected to greater force, and the compression deformation along the axial direction of the threaded part is greater. More is squeezed out in other directions. Due to the obstruction of the side wall of the annular mounting groove, the squeezed part of the elastic sealing ring will eventually be squeezed upward. This causes the part of the elastic sealing ring that is fitted on the edge of the heating plate and close to the threaded part to curl upward, resulting in more oil and dirt entering between the elastic sealing ring and the inner liner, which is not convenient for users to clean. Utility Model Content

[0003] Therefore, it is necessary to provide a cooking device with a steaming function to address the above problems.

[0004] To address the above problems, this application provides the following technical solution:

[0005] A cooking appliance with a steaming function, the cooking appliance with a steaming function includes:

[0006] The inner liner has an annular mounting groove on its inner bottom wall;

[0007] A heating plate, the opening of which is located inside the inner liner;

[0008] Multiple threaded components are fixed to the outer bottom wall of the heating plate and pass through the bottom wall of the annular mounting groove;

[0009] Multiple nuts, each corresponding to a threaded component, are provided. Each nut is located below the bottom wall of the annular mounting groove and is threadedly connected to the corresponding threaded component.

[0010] The elastic sealing ring includes an annular sleeve portion and an annular abutment portion. The annular sleeve portion is interference-fitted onto the edge of the heating plate. The annular abutment portion includes a connecting portion connected to the annular sleeve portion and a first ring, a second ring, and a third ring, all protruding from the bottom side of the connecting portion. The second ring is arranged around the first ring at intervals, and the third ring is arranged around the second ring at intervals. Each portion of the third ring near the threaded component is provided with a buffer groove. When all the nuts are tightened, the first ring, the second ring, and the third ring abut against the bottom wall of the annular mounting groove to seal the gap between the heating plate and the bottom wall of the inner liner.

[0011] This cooking appliance with steaming function has at least the following beneficial effects:

[0012] In this steaming cooking device, the elastic sealing ring abuts against the bottom wall of the annular mounting groove through three ring-shaped structures—the first ring, the second ring, and the third ring—rather than through a completely flat surface. This means that when the nuts are tightened, the portion of the elastic sealing ring near the threaded part experiences less compression deformation along the axial direction of the threaded part. This helps reduce the degree to which the elastic sealing ring is squeezed upwards, preventing the portion of the elastic sealing ring near the threaded part from warping upwards at the edge of the heating plate. Furthermore, among the first, second, and third rings, the third ring is the outermost ring structure. Each portion of the third ring near the threaded part has a buffer groove. Tightening the nuts results in less compression deformation of the third ring along the axial direction of the threaded part, which similarly helps reduce the degree to which the elastic sealing ring is squeezed upwards, again preventing the portion of the elastic sealing ring near the threaded part from warping upwards at the edge of the heating plate.

[0013] In summary, this cooking appliance with steaming function helps prevent the elastic sealing ring from lifting upwards at the edge of the heating plate and near the threaded part, which helps reduce the amount of oil entering between the elastic sealing ring and the inner pot, making it easier for users to clean.

[0014] In one embodiment, the buffer groove passes through the outer ring of the third ring in a horizontal direction.

[0015] With this configuration, after tightening each nut, the compression deformation of the third ring along the axial direction of the threaded part is relatively small. This helps to reduce the degree to which the elastic sealing ring is squeezed upward and prevents the part of the elastic sealing ring that is fitted on the edge of the heating plate and close to the threaded part from tilting upward.

[0016] In one embodiment, the buffer groove passes through the inner ring of the third ring in a horizontal direction.

[0017] With this configuration, after tightening each nut, the compression deformation of the third ring along the axial direction of the threaded part is relatively small. This helps to reduce the degree to which the elastic sealing ring is squeezed upward and prevents the part of the elastic sealing ring that is fitted on the edge of the heating plate and close to the threaded part from tilting upward.

[0018] In one embodiment, the inner bottom wall of the annular mounting groove, the bottom wall of the first ring, the bottom wall of the second ring, and the bottom wall of the third ring are all planar; when each nut is separated from the corresponding threaded part, the bottom wall of the first ring, the bottom wall of the second ring, and the bottom wall of the third ring are all completely in contact with the inner bottom wall of the annular mounting groove.

[0019] This design ensures that the first, second, and third rings fit tightly against the bottom wall of the annular mounting groove when all nuts are tightened, and that the first, second, and third rings effectively seal the gap between the heating plate and the bottom wall of the inner liner.

[0020] In one embodiment, a plurality of first isolation ribs are provided on the bottom side of the connecting part, each of the first isolation ribs extending linearly from the third ring to the second ring; the bottom wall of the first isolation rib is planar, and when each of the nuts is separated from the corresponding threaded part, the bottom wall of each first isolation rib is completely in contact with the inner bottom wall of the annular mounting groove; every two first isolation ribs correspond to one buffer groove, and the two first isolation ribs corresponding to the same buffer groove, the third ring and the second ring together enclose an isolation space, and each buffer groove is located within the corresponding isolation space.

[0021] With this design, even if the third ring loses its sealing function at the location of the buffer groove, the water and water vapor inside the inner liner can only reach the isolation space and cannot fill the gap between the third ring and the second ring. This prevents a large amount of water from reaching the second ring and helps to ensure the sealing function of the elastic sealing ring.

[0022] In one embodiment, as the second ring gradually approaches the third ring, the spacing between the two first isolation ribs corresponding to the same buffer groove gradually increases.

[0023] This design helps to reduce the degree to which the elastic sealing ring is squeezed upwards and prevents the part of the elastic sealing ring that is fitted around the edge of the heating plate and close to the threaded part from tilting upwards.

[0024] In one embodiment, the annular abutment portion is provided with a plurality of channels, each channel corresponding to a threaded component, each threaded component passing through the corresponding channel in a vertical direction, and each channel passing through the inner ring of the annular abutment portion in a horizontal direction.

[0025] This design serves two purposes. First, the threaded component passing through the annular abutment part enhances the clamping force of the annular abutment part by both the heating plate and the bottom wall of the annular mounting groove. Second, each channel horizontally passes through the inner ring of the annular abutment part, which helps to relieve stress and prevents excessive deformation of the elastic sealing ring when all nuts are tightened. This also helps prevent the portion of the elastic sealing ring fitted around the edge of the heating plate near the threaded component from tilting upwards.

[0026] In one embodiment, with all the nuts tightened, at least one of the outer ring of the annular abutment portion and the outer ring of the annular sleeve portion abuts against the side wall of the annular mounting groove.

[0027] This design helps the elastic sealing ring seal the gap between the heating plate and the bottom wall of the inner liner, thus ensuring the sealing effect of the elastic sealing ring.

[0028] In one embodiment, the width of the annular mounting groove gradually increases along the direction from bottom to top.

[0029] With this design, the elastic sealing ring can easily enter the annular mounting groove, making it convenient to assemble the elastic sealing ring and the inner liner together.

[0030] In one embodiment, the threaded component is a bolt or stud, and the threaded component is welded to the outer bottom wall of the heating plate.

[0031] This design makes it easy to fix the threaded parts to the outer bottom wall of the heating plate. Attached Figure Description

[0032] Figure 1 This is a perspective view of a cooking device with a steaming function according to an embodiment of this application;

[0033] Figure 2 for Figure 1 An exploded view of the cooking equipment shown.

[0034] Figure 3 for Figure 1 A front view of the cooking equipment shown;

[0035] Figure 4 for Figure 3 A cross-sectional view of the cooking equipment shown at section AA;

[0036] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0037] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0038] Figure 7 This is a schematic diagram of the connection between the threaded component and the heating plate in one embodiment;

[0039] Figure 8 This is a three-dimensional schematic diagram of the elastic sealing ring as viewed from above in one embodiment;

[0040] Figure 9 for Figure 8 The diagram shows a three-dimensional view of the elastic sealing ring from bottom to top.

[0041] Figure 10 for Figure 9 Enlarged diagram of point D in the middle.

[0042] Figure label:

[0043] 1. Inner liner; 11. Annular mounting groove; 12. Through hole; 2. Heating plate; 3. Threaded part; 4. Elastic sealing ring; 41. Annular sleeve part; 411. Annular groove; 42. Annular abutment part; 421. Connecting part; 422. First ring; 423. Second ring; 424. Third ring; 4241. Buffer groove; 425. Channel; 43. First isolation rib; 44. Isolation space; 45. Second isolation rib. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] See Figures 1 to 10This application provides a cooking device with a steaming function, which includes an inner pot 1, a heating plate 2, multiple threaded parts 3, multiple nuts (not shown in the figure), and an elastic sealing ring 4. An annular mounting groove 11 is provided on the inner bottom wall of the inner pot 1. The opening of the heating plate 2 is located inside the inner pot 1. Each threaded part 3 is fixed to the outer bottom wall of the heating plate 2 and passes through the bottom wall of the annular mounting groove 11. Nuts are provided in a one-to-one correspondence with the threaded parts 3, with each nut located below the bottom wall of the annular mounting groove 11 and threadedly connected to the corresponding threaded part 3. The elastic sealing ring 4 includes an annular sleeve portion 41 and an annular abutment portion 42. The annular sleeve portion 41 is interference-fitted onto the edge of the heating plate 2. The annular abutment portion 42 includes a connecting portion 421 connected to the annular sleeve portion 41 and a first ring 422, a second ring 423, and a third ring 424, all protruding from the bottom side of the connecting portion 421. The second ring 423 is arranged around the first ring 422 at intervals, and the third ring 424 is arranged around the second ring 423 at intervals. Each portion of the third ring 424 near the threaded component 3 is provided with a buffer groove 4241. In other words, there are multiple buffer grooves 4241, and each buffer groove 4241 corresponds to a threaded component 3. When all nuts are tightened, the elastic sealing ring 4 is clamped by the heating plate 2 and the bottom wall of the annular mounting groove 11. The first ring 422, the second ring 423, and the third ring 424 all abut against the bottom wall of the annular mounting groove 11 to seal the gap between the heating plate 2 and the bottom wall of the inner liner 1.

[0051] In this cooking device with steaming function, the elastic sealing ring 4 abuts against the bottom wall of the annular mounting groove 11 through three annular structures: the first ring 422, the second ring 423, and the third ring 424, rather than through a complete flat surface. In this way, after tightening each nut, the portion of the elastic sealing ring 4 near the threaded part 3 experiences less compression deformation along the axial direction of the threaded part 3. This helps to reduce the degree to which the elastic sealing ring 4 is squeezed upward and helps to prevent the portion of the elastic sealing ring 4 that is fitted on the edge of the heating plate 2 and near the threaded part 3 from tilting upward. Moreover, among the first ring 422, the second ring 423 and the third ring 424, the third ring 424 is the outermost ring structure. Each part of the third ring 424 near the threaded part 3 is provided with a buffer groove 4241. After tightening each nut, the compression deformation of the third ring 424 along the axial direction of the threaded part 3 is small. This is also beneficial to reduce the degree to which the elastic sealing ring 4 is squeezed upward, and also beneficial to prevent the part of the elastic sealing ring 4 that is fitted on the edge of the heating plate 2 and near the threaded part 3 from tilting upward.

[0052] In summary, this cooking appliance with steaming function helps prevent the elastic sealing ring 4 from lifting upwards on the edge of the heating plate 2 and near the threaded part 3, which helps reduce the amount of oil entering between the elastic sealing ring 4 and the inner pot 1, making it easier for users to clean.

[0053] For example, cooking appliances with steaming function are steam ovens / steam ovens / microwave-steam-grill combos / stove-steam-grill combos.

[0054] Understandably, a portion of the heating plate 2 needs to pass through the bottom wall of the inner liner 1. Therefore, the bottom wall of the inner liner 1 is provided with a through hole 12 for the heating plate 2 to pass through.

[0055] See Figure 8 The annular sleeve part 41 is provided with an annular groove 411, and the edge of the heating plate 2 is located inside the annular groove 411.

[0056] See Figure 10 The buffer groove 4241 passes through the outer ring of the third ring 424 in the horizontal direction. In this way, after tightening each nut, the compression deformation of the third ring 424 along the axial direction of the threaded part 3 is small. This helps to reduce the degree to which the elastic sealing ring 4 is squeezed upward and helps to prevent the part of the elastic sealing ring 4 that is fitted on the edge of the heating plate 2 and close to the threaded part 3 from lifting upward.

[0057] See Figure 10 The buffer groove 4241 passes through the inner ring of the third ring 424 in the horizontal direction. In this way, after tightening each nut, the compression deformation of the third ring 424 along the axial direction of the threaded part 3 is small. This helps to reduce the degree to which the elastic sealing ring 4 is squeezed upward and helps to prevent the part of the elastic sealing ring 4 that is fitted on the edge of the heating plate 2 and close to the threaded part 3 from lifting upward.

[0058] See Figure 10 The buffer groove 4241 extends horizontally through the outer ring, inner ring, and bottom side of the third ring 424. With all nuts tightened, the wall of the buffer groove 4241 abuts against the bottom wall of the annular mounting groove 11, thereby ensuring that the third ring 424 seals the gap between the heating plate 2 and the bottom wall of the inner liner 1.

[0059] See Figure 2 , Figure 6 and Figure 10 The inner bottom wall of the annular mounting groove 11, the bottom wall of the first ring 422, the bottom wall of the second ring 423, and the bottom wall of the third ring 424 are all planar. With each nut separated from its corresponding threaded component 3, the bottom walls of the first ring 422, the second ring 423, and the third ring 424 are completely flush with the inner bottom wall of the annular mounting groove 11. This facilitates a tight fit between the first ring 422, the second ring 423, and the third ring 424 and the bottom wall of the annular mounting groove 11 when all nuts are tightened, and helps the first ring 422, the second ring 423, and the third ring 424 to seal the gap between the heating plate 2 and the bottom wall of the inner liner 1.

[0060] See Figure 10Multiple first isolation ribs 43 are provided on the bottom side of the connecting part 421, each first isolation rib 43 extending linearly from the third ring 424 to the second ring 423. The bottom wall of the first isolation rib 43 is planar, and when each nut is separated from the corresponding threaded part 3, the bottom wall of each first isolation rib 43 is completely in contact with the inner bottom wall of the annular mounting groove 11. Every two first isolation ribs 43 correspond to one buffer groove 4241. The two first isolation ribs 43 corresponding to the same buffer groove 4241, the third ring 424 and the second ring 423 together enclose the isolation space 44, and each buffer groove 4241 is located within the corresponding isolation space 44. In this way, even if the third ring 424 loses its sealing function at the location of the buffer groove 4241, the water and water vapor in the inner liner 1 can only reach the isolation space 44 and cannot fill the gap between the third ring 424 and the second ring 423, which can prevent a large amount of water from reaching the second ring 423 and help ensure the sealing function of the elastic sealing ring 4.

[0061] See Figure 10 As the second ring 423 gradually approaches the third ring 424, the spacing between the two first isolation ribs 43 corresponding to the same buffer groove 4241 gradually increases. This helps to reduce the degree to which the elastic sealing ring 4 is squeezed upward, and helps to prevent the portion of the elastic sealing ring 4 that is fitted onto the edge of the heating plate 2 and near the threaded part 3 from warping upward. For example, the two first isolation ribs 43 corresponding to the same buffer groove 4241 are distributed in a figure-eight shape.

[0062] See Figures 8 to 10 The annular abutment portion 42 is provided with multiple channels 425, each corresponding to a threaded component 3. Each threaded component 3 passes through the corresponding channel 425 vertically, and each channel 425 passes through the inner ring of the annular abutment portion 42 horizontally. On the one hand, the threaded component 3 passing through the annular abutment portion 42 helps to increase the degree to which the annular abutment portion 42 is clamped by the heating plate 2 and the bottom wall of the annular mounting groove 11. On the other hand, the passage of each channel 425 through the inner ring of the annular abutment portion 42 horizontally can relieve stress, which helps to prevent the elastic sealing ring 4 from undergoing excessive deformation when all nuts are tightened, and helps to prevent the part of the elastic sealing ring 4 fitted on the edge of the heating plate 2 near the threaded component 3 from tilting upwards.

[0063] See Figure 10 The bottom side of the connecting part 421 is provided with a plurality of second isolation ribs 45, which isolate the gap between the second ring 423 and the first ring 422 from the channel 425.

[0064] In some embodiments, the threaded part 3 passes only through the bottom wall of the annular mounting groove 11 and does not pass through the elastic sealing ring 4. Therefore, in these embodiments, the annular abutment part 42 may not have a hole 425.

[0065] See Figure 6 With all nuts tightened, at least one of the outer rings of the annular abutment portion 42 and the annular sleeve portion 41 abuts against the side wall of the annular mounting groove 11. This helps the elastic sealing ring 4 seal the gap between the heating plate 2 and the bottom wall of the inner liner 1, thus ensuring the sealing effect of the elastic sealing ring 4.

[0066] See Figure 2 and Figure 6 The width of the annular mounting groove 11 gradually increases from bottom to top. This allows the elastic sealing ring 4 to easily enter the annular mounting groove 11, facilitating the assembly of the elastic sealing ring 4 and the inner liner 1 together.

[0067] See Figure 7 The threaded component 3 is a bolt or stud, and it is welded to the outer bottom wall of the heating plate 2. This makes it easy to fix the threaded component 3 to the outer bottom wall of the heating plate 2.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A cooking apparatus having a steaming function, characterized by, The utility model relates to a heating disc and inner container sealing structure, including: Inner container (1), the inner bottom wall of inner container (1) is equipped with annular installation groove (11); Heating disc (2), the disc mouth of heating disc (2) is located in inner container (1) inside; Multiple threaded parts (3) are all solid to the outer bottom wall of heating disc (2) and all are threaded in the bottom wall of annular installation groove (11); Multiple nuts, the nut is set with threaded part (3) one to one, every the nut is located the bottom wall below of annular installation groove (11) and is connected with corresponding threaded part (3) with screw thread; Elastic sealing ring (4), including annular sleeve part (41) and annular abutment part (42), the annular sleeve part (41) is set in heating disc (2) disc mouth edge with interference, the annular abutment part (42) includes the connecting portion (421) connected to the annular sleeve part (41) and the first ring (422), the second ring (423) and the third ring (424) all are convex in the bottom side of connecting portion (421), the second ring (423) is spaced around the first ring (422) setting, the third ring (424) is spaced around the second ring (423) setting, every the part of third ring (424) near threaded part (3) is equipped with buffer groove (4241), in every the state that nut is tightened, the first ring (422), the second ring (423) and the third ring (424) all with annular installation groove (11) bottom wall abut, to seal the gap between heating disc (2) and inner container (1) bottom wall.

2. The cooking apparatus having a steaming function according to claim 1, wherein, The buffer groove (4241) penetrates the outer ring of the third ring (424) along the horizontal direction.

3. The cooking apparatus having a steaming function according to claim 2, wherein, The buffer groove (4241) penetrates the inner ring of the third ring (424) along the horizontal direction.

4. The cooking apparatus having a steaming function according to claim 3, wherein, The inner bottom wall of the annular installation groove (11), the bottom wall of the first ring (422), the bottom wall of the second ring (423), and the bottom wall of the third ring (424) are all planar; in the state that every nut is separated from the corresponding threaded part (3), the bottom wall of the first ring (422), the bottom wall of the second ring (423), and the bottom wall of the third ring (424) are all completely fitted with the inner bottom wall of the annular installation groove (11).

5. The cooking apparatus having a steaming function according to claim 4, wherein, A plurality of first isolation ribs (43) are provided on the bottom side of the connecting portion (421), each first isolation rib (43) extends linearly from the third ring (424) to the second ring (423); the bottom wall of the first isolation rib (43) is planar, in the state that every nut is separated from the corresponding threaded part (3), the bottom wall of each first isolation rib (43) is completely fitted with the inner bottom wall of the annular installation groove (11); every two first isolation ribs (43) correspond to a buffer groove (4241), two first isolation ribs (43), the third ring (424), and the second ring (423) collectively enclose an isolation space (44) corresponding to the same buffer groove (4241), and each buffer groove (4241) is located in the corresponding isolation space (44).

6. The cooking apparatus having a steaming function according to claim 5, wherein, The interval between the two first isolation ribs (43) corresponding to the same buffer groove (4241) gradually increases as the second ring (423) gradually approaches the third ring (424).

7. The cooking apparatus having a steaming function according to claim 3, wherein, A plurality of holes (425) are arranged on the annular abutting portion (42), and the holes (425) are arranged one by one corresponding to the threaded members (3). Each threaded member (3) passes through the corresponding hole (425) along the vertical direction, and each hole (425) penetrates the inner ring of the annular abutting portion (42) along the horizontal direction.

8. The cooking apparatus having a steaming function according to claim 1, wherein, In the state that each nut is tightened, at least one of the outer ring of the annular abutting portion (42) and the outer ring of the annular sleeve portion (41) abuts against the side wall of the annular mounting groove (11).

9. The cooking apparatus having a steaming function according to claim 8, wherein, The width of the annular mounting groove (11) gradually increases in the direction from bottom to top.

10. The cooking apparatus having a steaming function according to claim 1, wherein, The threaded member (3) is a bolt or a stud, and the threaded member (3) is welded to the outer bottom wall of the heat disc (2).

Images