Microwave antenna structure and cooking electric appliance

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a microwave antenna structure and a cooking appliance, the microwave antenna structure is connected to an inner container assembly, the inner container assembly comprises an inner container forming a working cavity and a separator arranged in the working cavity, the microwave antenna structure comprises an antenna sheet and a support member, the antenna sheet is rotatably arranged in the working cavity, and the support member is arranged in the inner container. The antenna sheet and the separator are arranged at intervals in the height direction of the working cavity, the antenna sheet is provided with a first area and a second area with the mass smaller than that of the first area so as to form an eccentric structure, the antenna sheet is provided with a lightening hole, and the supporting piece is clamped in the lightening hole and located between the antenna sheet and the separator; the support member abuts against the separator to support the antenna sheet such that the antenna sheet is always parallel to the separator. According to the microwave antenna structure, the gravity distribution uniformity of the antenna sheet is improved through the supporting piece, the eccentricity is reduced, the bad states of inclination, deflection and the like in the rotation process of the antenna sheet are avoided, and the microwave energy efficiency and the microwave uniformity of the cooking electric appliance are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a microwave antenna structure and a cooking appliance. Background Art

[0002] Microwave ovens, integrated stoves, and other cooking appliances with microwave heating functions are equipped with magnetrons and waveguide systems. Microwaves are generated by the magnetrons and coupled into the cooking cavity through the waveguide system. The waveguide system requires an antenna to couple microwaves. Antenna structures can be categorized as non-eccentric antennas (symmetrical antennas) or eccentric antennas (asymmetric antennas). Non-eccentric antennas have poor microwave impedance matching, while eccentric antennas can adjust and change their structural shape. By increasing or decreasing local feature sizes, better microwave impedance can be achieved. Therefore, eccentric antennas are more widely used in microwave ovens and integrated stoves. Due to their asymmetric structure, the center of gravity of an eccentric antenna does not coincide with its geometric center. The geometric center is usually used as the rotation center of an eccentric antenna, which can easily cause an unstable center of gravity. During rotation, an eccentric antenna is prone to tilting and deflecting, resulting in an unstable motion trajectory, which in turn affects microwave energy efficiency and uniformity. Utility Model Content

[0003] The first object of the present utility model is to provide a microwave antenna structure, which can solve the problem that the existing eccentric antenna is prone to tilting and deflecting during rotation, thereby affecting microwave energy efficiency and microwave uniformity.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] First, a microwave antenna structure is provided, which is connected to an inner liner assembly. The inner liner assembly includes an inner liner forming a working cavity and a partition arranged in the working cavity. The microwave antenna structure includes an antenna plate and a support member. The antenna plate is rotatably arranged in the working cavity. The antenna plate and the partition are spaced apart along the height direction of the working cavity. The antenna plate has a first area and a second area with a mass smaller than the first area to form an eccentric structure, and the antenna plate is provided with a weight-reducing hole. The support member is clamped in the weight-reducing hole and is located between the antenna plate and the partition. The support member abuts the partition to support the antenna plate so that the antenna plate is always parallel to the partition.

[0006] As an optional structure of the present invention, the partition is connected to the top of the inner tank to separate part of the working chamber to form an installation chamber, the weight-reducing hole is opened in the first area, the antenna piece is rotatably arranged in the installation chamber, and the support member is located below the antenna piece to support the first area.

[0007] As an optional structure of the present invention, the partition is connected to the bottom of the inner tank to separate part of the working chamber to form an installation chamber, the weight-reducing hole is opened in the second area, the antenna piece is rotatably arranged in the installation chamber, and the support member is located above the antenna piece to support the second area.

[0008] As an optional structure of the present invention, the partition is connected to the inner wall of the inner tank to separate part of the working cavity to form an installation cavity, the antenna piece is rotatably arranged in the installation cavity, the first area and the second area are both provided with the weight-reducing holes, and at least two support members are provided, and at least two support members are respectively clamped in the weight-reducing holes in the first area and the weight-reducing holes in the second area.

[0009] As an optional structure of the present invention, the support member includes a supporting portion, a clamping portion and a protruding portion. The supporting portion abuts against the side of the antenna sheet facing the partition, the protruding portion is arranged at the end of the clamping portion, the clamping portion can be passed through the weight-reducing hole, and the protruding portion abuts against the side of the antenna sheet facing away from the partition to limit the support member from separating from the antenna sheet.

[0010] As an optional structure of the present invention, the protruding size of the protrusion is H1, wherein 0.1mm≤H1≤0.3mm, and / or the support portion extends along the protruding direction of the protrusion, and the protruding size of the protrusion is smaller than the extension length of the support portion.

[0011] As an optional structure of the present invention, the support member includes two clamping parts and two protruding parts, the two clamping parts are arranged at intervals on the support part, and the two protruding parts are symmetrically arranged on the outside of the two clamping parts. The two clamping parts can produce elastic deformation and approach each other to pass through the weight-reducing hole.

[0012] As an optional structure of the present invention, the antenna sheet has two weight-reducing holes that are spaced apart, and the two clamping parts are respectively clamped in the two weight-reducing holes.

[0013] As an optional structure of the present invention, the support member and the separator are in arc-surface contact.

[0014] A second object of the present invention is to provide a cooking appliance that can solve the problem that the existing eccentric antenna is prone to tilting and deflecting during rotation, thereby affecting microwave energy efficiency and microwave uniformity, through the above-mentioned microwave antenna structure.

[0015] To achieve this purpose, the present invention adopts the following technical solutions on the other hand:

[0016] Next, a cooking appliance is provided, comprising the microwave antenna structure as described above. The cooking appliance further comprises an inner pot assembly, and the microwave antenna structure is connected to the inner pot assembly.

[0017] Beneficial effects of the utility model:

[0018] The microwave antenna structure provided by the present invention is connected to an inner liner assembly, which includes an inner liner forming a working cavity and a partition disposed within the working cavity. The microwave antenna structure comprises an antenna plate and a support member rotatably disposed within the working cavity. The antenna plate has an eccentric structure, which can cause it to tilt, causing lighter areas to tilt upward and heavier areas to sag relative to the horizontal plane. The antenna plate and the partition member are spaced apart along the height of the working cavity. The antenna plate has a weight-reducing hole. The support member is snapped into the weight-reducing hole and positioned between the antenna plate and the partition member. The support member abuts the partition member to support the antenna plate, ensuring that the antenna plate remains parallel to the partition member. The support member supports the upward or downward tilting areas of the antenna plate. The support force provided by the support member and the antenna plate's rotation axis form a lever effect, partially offsetting the gravitational force generated by the heavier areas of the antenna plate. This reduces the mass difference between different areas of the eccentric structure, allowing the antenna plate to remain horizontal, avoiding undesirable conditions such as tilting or deflecting during rotation caused by the eccentricity, ensuring the stability of the motion trajectory, and preventing impacts on microwave energy efficiency and uniformity.

[0019] The cooking appliance provided by the present invention includes the above-mentioned microwave antenna structure, which has an antenna piece and a separator arranged at intervals along the height direction of the working cavity. The support piece that is clamped in the weight-reducing hole on the antenna piece and located between the antenna piece and the separator provides support for the antenna piece by abutting the separator, so that the antenna piece can always maintain a horizontal state, avoiding undesirable conditions such as tilting and deflection of the antenna piece during rotation due to eccentricity, thereby ensuring the microwave energy efficiency and microwave uniformity of the cooking appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the partial disassembly of the structure of the cooking appliance provided by an embodiment of the present utility model;

[0021] Figure 2 This is a partial structural cross-sectional view of a cooking appliance provided by an embodiment of the present utility model;

[0022] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0023] Figure 4 It is a partial structural diagram of a cooking appliance provided by an embodiment of the present utility model (removed);

[0024] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part B;

[0025] Figure 6 This is a structural front view of the microwave antenna structure provided by an embodiment of the utility model;

[0026] Figure 7 This is a cross-sectional view of the structure of the support member connected to the antenna sheet provided by an embodiment of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the support member provided by an embodiment of the utility model.

[0028] In the picture:

[0029] 1. Antenna sheet; 11. Weight reduction hole;

[0030] 2. Support member; 21. Support portion; 22. Clamping portion; 23. Raised portion;

[0031] 3. Rotating shaft; 31. Rotating shaft stop ring;

[0032] 41. Waveguide; 42. Stirring motor;

[0033] 100. Inner liner assembly; 101. Working chamber; 1011. Installation chamber; 102. Glass baffle; 103. Inner liner; 104. Mica sheet; 1041. Installation hole; 105. Installation retaining ring. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0035] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0038] like Figures 1 to 3 As shown, an embodiment of the present invention first provides a microwave antenna structure connected to an inner liner assembly 100. The inner liner assembly 100 has a working chamber 101, an inner liner 103, and a partition disposed within the inner liner 103. The microwave antenna structure includes an antenna plate 1 and a support member 2. The antenna plate 1 is rotatably disposed within the working chamber 101. The antenna plate 1 has an eccentric structure, having a first region and a second region. The mass of the first region is greater than the mass of the second region. That is, due to the asymmetric structure of the antenna plate 1, relative to its geometric center, the antenna plate 1 has a first region with a larger mass and a second region with a smaller mass. Along the height direction of the working chamber 101, the antenna plate 1 and the partition are spaced apart. The antenna plate 1 has a weight-reducing hole 11. The support member 2 is mounted within the weight-reducing hole 11 and is located between the antenna plate 1 and the partition. The support member 2 abuts the partition to support the antenna plate 1, ensuring that the antenna plate 1 is always parallel to the partition. Due to the eccentric structure of the antenna piece 1, there is a risk of tilting, causing the lighter area to warp up and the heavier area to droop relative to the horizontal plane. The support member 2 can support the warped or drooped area of the antenna piece 1. The supporting force provided by the support member 2 and the rotating shaft of the antenna piece 1 form a lever effect, partially offsetting the gravity formed by the larger area of the antenna piece 1, thereby reducing the mass difference between the first area and the second area. The antenna piece 1 can always maintain a horizontal state, avoiding undesirable conditions such as tilting and deflection during the rotation process of the antenna piece 1 due to eccentricity, ensuring the stability of the motion trajectory, and avoiding affecting the microwave energy efficiency and microwave uniformity.

[0039] Specifically, the mass of the first region is greater than that of the second region, and weight-reducing holes 11 are provided in the first region and / or the second region. In other words, weight-reducing holes 11 can be provided only in the first region (where the mass is greater), thereby reducing the mass of the first region and minimizing the mass difference between the first and second regions. This improves the uniformity of the gravity distribution of antenna sheet 1 and further reduces the eccentricity of antenna sheet 1. Weight-reducing holes 11 can also be provided only in the second region, or both the first and second regions can be provided with weight-reducing holes 11, thereby reducing the overall weight of antenna sheet 1.

[0040] It should be noted that in this embodiment, the antenna sheet 1 has a uniform density and a planar asymmetric structure. Therefore, the first and second regions can be distinguished by the shape of the antenna sheet 1. The average distance between the edge contour and the rotation center of the first region is greater than the average distance between the edge contour and the rotation center of the second region. This embodiment does not limit the specific area and shape of the first and second regions; the weight-reducing holes 11 can be located anywhere in the first and / or second regions.

[0041] In this embodiment, the inner liner assembly 100 includes an inner liner 103 and a glass baffle 102 disposed within the working chamber 101. The glass baffle 102 serves as a partition to separate a portion of the working chamber 101 and form an installation cavity 1011. The installation cavity 1011 accommodates the antenna 1, and the glass baffle 102 shields and protects the antenna 1 from user contact. When the partition is attached to the top of the inner liner 103, the antenna 1 is rotatably disposed within the installation cavity 1011, forming a top-mounted microwave structure. In this configuration, a weight-reducing hole 11 is provided in the first region, and a support member 2 is positioned below the antenna 1 to support the first region. The heavier first region sags relative to the horizontal plane, and the support member 2 provides support from below. The support member 2 rotates with the antenna 1, providing constant support for the antenna 1 and maintaining a horizontal position.

[0042] In another embodiment, the divider is connected to the bottom of the inner container 103. Accordingly, the antenna sheet 1 is rotatably mounted within the mounting cavity 1011, forming a bottom-mounted microwave structure. In this embodiment, the weight-reducing holes 11 are located in the second region, and the antenna sheet 1 is rotatably mounted within the mounting cavity 1011. The support member 2 is positioned above the antenna sheet 1 to support the second region. The lighter second region tilts upward relative to the horizontal plane, and the support member 2 rotates with the antenna sheet 1, pressing down on the second region from above to maintain the antenna sheet 1 in a horizontal position.

[0043] In other embodiments, both the first and second regions are provided with weight-reducing holes 11, and at least two support members 2 are provided, with the at least two support members 2 being respectively mounted in the weight-reducing holes 11 in the first region and the weight-reducing holes 11 in the second region. In this case, the support members 2 can support the first region with a drooping tendency from below the first region, or support the second region with an upward warping tendency from above the second region.

[0044] To ensure reliable installation and stable support of support member 2, support member 2 includes a supporting portion 21, a clamping portion 22, and a raised portion 23. Support member 21 abuts the side of antenna sheet 1 facing the separator to support antenna sheet 1 and increase the support area. Raised portion 23 is located at the end of clamping portion 22, which can be inserted into lightening hole 11. Raised portion 23 abuts the side of antenna sheet 1 facing away from the separator to prevent support member 2 from separating from antenna sheet 1, improving the reliability of the clamping connection and preventing support member 2 from separating from antenna sheet 1.

[0045] Optionally, the protrusion size of the protrusion 23 is H1, 0.1mm≤H1≤0.3mm. For example, H1 can be 0.1mm, 0.2mm, or 0.3mm. The protrusion 23 with a protrusion size within this range can pass through the weight-reducing hole 11 without being easily loosened.

[0046] The support portion 21 extends along the protruding direction of the protruding portion 23. The extended length of the support portion 21 is greater than H1. On the one hand, it increases the supporting area and improves the supporting stability. On the other hand, it prevents the support portion 21 from passing through the weight-reducing hole 11 and causing the support member 2 to loosen.

[0047] The size of the clamping portion 22 is H2, and the diameter of the lightening hole 11 is D, D>H2, and the difference between the two is 0.1mm-0.3mm. The size difference between the clamping portion 22 and the lightening hole 11 is conducive to the protrusion 23 passing through.

[0048] In order to increase the convenience of clamping the support member 2, the support member 2 includes two clamping parts 22 and two protrusions 23. The two clamping parts 22 are arranged at intervals on the support member 21, and the two protrusions 23 are symmetrically arranged on the outside of the two clamping parts 22. The two clamping parts 22 can produce elastic deformation and approach each other to pass through the weight-reducing hole 11. When installing the support member 2, the two clamping parts 22 can be squeezed to cause them to undergo elastic deformation and approach each other to the middle, which is conducive to the two protrusions 23 passing through the weight-reducing hole 11. Then, the two clamping parts 22 can be loosened to restore them to their original state. The protrusions 23 on the outside of the two clamping parts 22 are pressed onto the antenna sheet 1 along the radial direction of the weight-reducing hole 11 to prevent the support member 2 from loosening. Therefore, the material of the support member 2 is preferably a flexible plastic that does not absorb microwaves, which is convenient for deformation clamping.

[0049] In order to prevent the two clamping parts 22 from being loosened from the weight-reducing holes 11, the antenna sheet 1 has two weight-reducing holes 11 spaced apart from each other. The two clamping parts 22 on the same supporting part 21 are respectively clamped in the two weight-reducing holes 11. Figure 7 The provision of the two lightening holes 11 can reduce the probability of the respective clamping parts 22 being disengaged, making the clamping parts 22 easy to install and not easy to loosen.

[0050] like Figure 7 As shown, the support portion 21 has a supporting arc surface, which creates arc-shaped contact between the support member 2 and the separator. This arc-shaped contact reduces rotational friction compared to flat surface friction and provides stable support. The support member 2 is made of a non-metallic material that does not absorb microwaves, such as a flexible plastic like polytetrafluoroethylene, or a hard material like ceramic, without specific limitations in this embodiment.

[0051] In order to achieve the installation of the glass baffle 102, the inner tank assembly 100 also includes an installation ring 105, which is connected to the inner top wall of the inner tank 103 through fasteners such as screws. An installation ring groove is formed between the installation ring 105 and the inner top wall, and the glass baffle 102 is embedded in the installation ring groove.

[0052] The inner liner assembly 100 is provided with a microwave feed hole. The microwave antenna structure also includes a waveguide 41 and a stirring motor 42 disposed outside the inner liner 103. One end of the rotating shaft 3 is connected to the antenna sheet 1, and the other end passes through the microwave feed hole to connect to the input shaft of the stirring motor 42. To secure the rotating shaft 3, the inner liner assembly 100 is also provided with a mica sheet 104 with a mounting hole 1041. The rotating shaft 3 is provided with a rotating shaft retaining ring 31. The mica sheet 104 is fixedly connected to the inner liner 103, and the rotating shaft 3 is disposed in the mounting hole 1041. The rotating shaft retaining ring 31 is embedded between the mica sheet 104 and the inner liner 103 to facilitate the installation of the rotating shaft 3.

[0053] When the antenna sheet 1 is provided with a plurality of weight-reducing holes 11, and the microwave antenna structure has a plurality of supporting members 2, the plurality of supporting members 2 are respectively mounted in the plurality of weight-reducing holes 11, and the supporting portions 21 of at least two of the plurality of supporting members 2 are arranged at an angle. Figures 4 to 6 As shown in the figure, two support members 2 are provided on the antenna sheet 1, and the support portions 21 of the two support members 2 are arranged perpendicular to each other. Of course, multiple support members 2 can also be arranged parallel to each other, and are not limited to the drawings of this embodiment.

[0054] The present invention further provides a cooking appliance comprising the microwave antenna structure described above, and an inner pot assembly 100, to which the microwave antenna structure is connected. The microwave antenna structure comprises an eccentric antenna plate 1 having a first region of greater mass and a second region of lesser mass. The antenna plate 1 and a separator are spaced apart along the height of the working chamber 101. The antenna plate 1 is provided with a weight-reducing hole 11. A support member 2 is mounted within the weight-reducing hole 11 and positioned between the antenna plate 1 and the separator. The support member 2 abuts the separator to support the antenna plate 1, ensuring that the antenna plate 1 remains parallel to the separator. Due to the eccentric structure of the antenna piece 1, there is a risk of tilting, causing the lighter area to warp up and the heavier area to droop relative to the horizontal plane. The support member 2 can support the warped or drooped area of the antenna piece 1. The supporting force provided by the support member 2 and the rotation axis of the antenna piece 1 form a lever effect, partially offsetting the gravity formed by the larger area of the antenna piece 1, thereby reducing the mass difference between the first area and the second area. The antenna piece 1 can always maintain a horizontal state, avoiding undesirable conditions such as tilting and deflection during rotation caused by the eccentricity of the antenna piece 1, and ensuring the microwave energy efficiency and microwave uniformity of the cooking appliance.

[0055] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A microwave antenna structure connected to an inner liner assembly (100), wherein the inner liner assembly (100) includes an inner liner (103) forming a working cavity (101) and a partition arranged in the working cavity (101), characterized in that: The microwave antenna structure comprises an antenna piece (1) and a support member (2); the antenna piece (1) is rotatably arranged in the working cavity (101); along the height direction of the working cavity (101), the antenna piece (1) and the partition are spaced apart; the antenna piece (1) has a first region and a second region with a mass smaller than that of the first region to form an eccentric structure; and the antenna piece (1) is provided with a weight-reducing hole (11); the support member (2) is clamped in the weight-reducing hole (11) and is located between the antenna piece (1) and the partition; the support member (2) abuts against the partition to support the antenna piece (1) so that the antenna piece (1) is always parallel to the partition.

2. The microwave antenna structure according to claim 1, characterized in that: The partition is connected to the top of the inner liner (103) to separate part of the working chamber (101) to form an installation chamber (1011); the weight-reducing hole (11) is opened in the first area; the antenna sheet (1) is rotatably arranged in the installation chamber (1011); and the support member (2) is located below the antenna sheet (1) to support the first area.

3. The microwave antenna structure according to claim 1, characterized in that: The partition is connected to the bottom of the inner liner (103) to separate part of the working chamber (101) to form an installation chamber (1011); the weight-reducing hole (11) is opened in the second area; the antenna sheet (1) is rotatably arranged in the installation chamber (1011); and the support member (2) is located above the antenna sheet (1) to support the second area.

4. The microwave antenna structure according to claim 1, characterized in that: The partition is connected to the inner wall of the inner liner (103) to separate part of the working chamber (101) to form an installation chamber (1011); the antenna sheet (1) is rotatably arranged in the installation chamber (1011); the first area and the second area are both provided with the weight-reducing holes (11); at least two support members (2) are provided, and at least two support members (2) are respectively clamped in the weight-reducing holes (11) in the first area and the weight-reducing holes (11) in the second area.

5. The microwave antenna structure according to claim 1, characterized in that: The support member (2) comprises a support portion (21), a clamping portion (22) and a protruding portion (23), wherein the support portion (21) abuts against the side of the antenna sheet (1) facing the partition, and the protruding portion (23) is arranged at the end of the clamping portion (22), and the clamping portion (22) can be inserted into the weight-reducing hole (11), and the protruding portion (23) abuts against the side of the antenna sheet (1) facing away from the partition to limit the support member (2) from separating from the antenna sheet (1).

6. The microwave antenna structure according to claim 5, characterized in that: The protruding dimension of the protruding portion (23) is H1, wherein 0.1 mm ≤ H1 ≤ 0.3 mm, and / or the supporting portion (21) extends along the protruding direction of the protruding portion (23), and the protruding dimension of the protruding portion (23) is smaller than the extension length of the supporting portion (21).

7. The microwave antenna structure according to claim 5, characterized in that: The support member (2) comprises two clamping portions (22) and two protruding portions (23), wherein the two clamping portions (22) are spaced apart from each other on the support portion (21), and the two protruding portions (23) are symmetrically arranged on the outsides of the two clamping portions (22). The two clamping portions (22) can generate elastic deformation and approach each other to pass through the weight-reducing hole (11).

8. The microwave antenna structure according to claim 7, characterized in that: The antenna sheet (1) has two weight-reducing holes (11) arranged at intervals, and the two clamping portions (22) are respectively clamped in the two weight-reducing holes (11).

9. The microwave antenna structure according to any one of claims 1 to 8, characterized in that: There is arc surface contact between the support member (2) and the separator.

10. A cooking appliance, characterized in that The cooking appliance comprises the microwave antenna structure according to any one of claims 1 to 9, the cooking appliance further comprising an inner pot assembly (100), and the microwave antenna structure is connected to the inner pot assembly (100).

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