Heating assembly and microwave cooking equipment

Abstract

The utility model discloses a heating assembly and microwave cooking equipment, the heating assembly is used for the microwave cooking equipment, the heating assembly comprises an electric heating piece and a choke structure, the electric heating piece is suitable for being arranged in a microwave cooking cavity of the microwave cooking equipment and is provided with a wire, and the choke structure is arranged on the electric heating piece. The wire is suitable for extending out of the microwave cooking cavity and used for being electrically connected with a power line of the microwave cooking equipment, the choke structure comprises an outer sleeve and an inner sleeve, the outer sleeve is arranged on the outer side of the inner sleeve in a sleeving mode at intervals, a wire passing channel extending in the axial direction is formed in the inner sleeve, and the wire passing channel is used for allowing the wire to penetrate through. Therefore, the choking structure is arranged, the choking structure is equivalent to a coaxial line short-circuiting device and has a coaxial shielding characteristic, so that the choking structure plays a role in shielding microwaves, the amount of microwaves led out from the microwave cooking cavity through the electric heating piece and the wire is reduced, the microwave leakage amount of the microwave cooking equipment is reduced, and the service life of the microwave cooking equipment is prolonged. And the use safety of the microwave cooking equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking equipment, in particular to a heating component and a microwave cooking device. Background Art

[0002] The heating tube of a microwave oven is arranged in the microwave cooking cavity, and microwave energy acts on the heating tube and is led out through a wire. In the related art, the anti-leakage device arranged on the microwave oven has a poor anti-leakage effect, resulting in a problem of a large amount of microwave leakage still existing in the microwave oven, which affects the use safety of the microwave oven. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a heating component and a microwave cooking device, and the heating component has the function of shielding microwaves, effectively reducing the leakage amount of microwaves.

[0004] A heating component for a microwave cooking device, comprising: an electric heating element, which is adapted to be arranged in the microwave cooking cavity of the microwave cooking device and is provided with a wire, and the wire is adapted to extend out of the microwave cooking cavity and is used for electrically connecting with the power supply wire of the microwave cooking device; a choke structure, the choke structure includes an outer sleeve and an inner sleeve, both the outer sleeve and the inner sleeve are conductors, and the outer sleeve is spacedly sleeved outside the inner sleeve, and an axially extending wire passing channel is formed in the inner sleeve, and the wire passing channel is used for the wire to pass through.

[0005] According to the heating component of the utility model, by arranging the choke structure, the choke structure includes an outer sleeve and an inner sleeve which are sleeved and matched in the radial direction and are spaced apart, and the choke structure is equivalent to a coaxial short-circuit breaker, and has coaxial shielding characteristics, so that the choke structure plays a role in shielding microwaves, reducing the amount of microwaves led out from the microwave cooking cavity through the electric heating element and the wire, thereby reducing the microwave leakage amount of the microwave cooking device and improving the use safety of the microwave cooking device.

[0006] According to some embodiments of the utility model, the length L1 of the inner sleeve in the axial direction is one quarter of the microwave wavelength generated by the microwave cooking device.

[0007] According to some embodiments of the utility model, in the axial direction, the length L1 of the inner sleeve and the length L2 of the outer sleeve satisfy the relational expression: 7 / 10 ≤ L1 / L2 ≤ 5 / 6; and / or, the radius Ri of the inner sleeve and the radius Ro of the outer sleeve satisfy the relational expression: 1.5*Ri ≤ Ro ≤ 3*Ri.

[0008] According to some embodiments of the utility model, a mounting flange is formed on the outer peripheral wall of the outer sleeve, a connecting piece is connected between the outer sleeve and the inner sleeve, and the connecting piece and the mounting flange are arranged opposite to each other in the radial direction, or the connecting piece and the mounting flange are arranged offset in the axial direction.

[0009] According to some embodiments of the utility model, the connecting piece is located at one axial end of the inner sleeve, the mounting flange is located at one axial end of the outer sleeve, and is axially offset from the connecting piece, and the mounting flange, the connecting piece, the outer sleeve and the inner sleeve are an integral piece; or, the mounting flange is located at one axial end of the outer sleeve, and is radially opposite to the connecting piece, and the mounting flange, the connecting piece and the inner sleeve are an integral piece; or, the mounting flange is spaced between the two axial ends of the outer sleeve, and is radially opposite to the connecting piece, and a portion of the outer sleeve located on a side of the mounting flange away from the inner sleeve, the mounting flange, the connecting piece and the inner sleeve are an integral piece.

[0010] According to some embodiments of the utility model, the electric heating element and the choke structure are spaced apart, and the heating assembly further includes: a protective element, which is fitted between the electric heating element and the choke structure and wraps the portion of the wire located between the electric heating element and the choke structure.

[0011] According to some embodiments of the present invention, the protective element is a ceramic element.

[0012] According to some embodiments of the utility model, the axial ends of the outer sleeve are respectively a first end and a second end, and one axial end of the inner sleeve is spaced between the first end and the second end, so that an installation groove is defined between the one axial end of the inner sleeve and the first end, and the protective member is inserted into the installation groove.

[0013] Another object of the present invention is to provide a microwave cooking device.

[0014] A microwave cooking device comprises a shell and the above-mentioned heating assembly, wherein the shell defines a microwave cooking cavity, the electric heating element is arranged in the microwave cooking cavity, a mounting hole is formed on the cavity wall of the microwave cooking cavity, the choke structure is installed at the mounting hole, and the wire extends out of the microwave cooking cavity through the wire passage and is electrically connected to a power line.

[0015] The microwave cooking device has the same advantages as the above-mentioned heating assembly, which will not be described in detail here.

[0016] According to some embodiments of the present utility model, the heating component is the above-mentioned heating component, and the mounting flange is fixedly connected to the inner surface or the outer surface of the cavity wall of the microwave cooking cavity.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic structural diagram of the microwave cooking device according to the embodiment of the present utility model Figure 1 ;

[0020] Figure 2 is Figure 1 an enlarged view of part A in

[0021] Figure 3 is a schematic structural diagram of the microwave cooking device according to the embodiment of the present utility model Figure 2 ;

[0022] Figure 4 is a schematic structural diagram of the choke structure according to the embodiment of the present utility model Figure 1 ;

[0023] Figure 5 is Figure 4 a cross-sectional view of

[0024] Figure 6 is a simulation test diagram of the heating component according to the embodiment of the present utility model;

[0025] Figure 7 is a schematic structural diagram of the choke structure according to the embodiment of the present utility model Figure 2 ;

[0026] Figure 8 is Figure 7 a cross-sectional view of

[0027] Figure 9 is a schematic structural diagram of the choke structure according to the embodiment of the present utility model Figure 3 ;

[0028] Figure 10 is Figure 9 a cross-sectional view of

[0029] Figure 11 is a schematic structural diagram of the microwave cooking device according to the embodiment of the present utility model Figure 3 ;

[0030] Figure 12 Structural schematic of the microwave cooking device according to the embodiment of the present utility model Figure 4 .

[0031] Reference numerals:

[0032] Heating assembly 100,

[0033] Electric heating element 10, wire 11,

[0034] Choke structure 20, outer sleeve 21, first end 211, second end 212, inner sleeve 22, wire passing channel 221, mounting flange 23, connecting member 24, mounting groove 201,

[0035] Protective member 30, sealing member 40,

[0036] Microwave cooking device 1000, housing 200, microwave cooking cavity 210, cavity wall 220, mounting hole 2201. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "length", "inner", "outer", "axial", "radial", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model. In addition, the features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0039] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "mounting", "connecting", "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0040] Next, refer toFigures 1 - 12 Describe a heating component 100 and a microwave cooking device 1000 according to an embodiment of the present utility model.

[0041] Combined with Figures 1 to 3 , according to an embodiment of the present utility model, for a heating component 100 used in a microwave cooking device 1000, the heating component 100 includes: an electric heating element 10, which is adapted to be arranged in a microwave cooking cavity 210 of the microwave cooking device 1000 and is provided with a wire 11. The wire 11 is adapted to extend out of the microwave cooking cavity 210 and is used for electrically connecting with the power cord of the microwave cooking device 1000.

[0042] The electric heating element 10 is electrically connected to the power cord of the microwave cooking device 1000 through the wire 11. When the heating component 100 is powered on, the electric heating element 10 can generate heat and can bake the food in the microwave cooking cavity 210, so that the microwave cooking device 1000 has a baking function and improves the functionality of the microwave cooking device 1000.

[0043] Combined with Figures 1 to 3 , the heating component 100 further includes a choke structure 20. The choke structure 20 includes an outer sleeve 21 and an inner sleeve 22. Both the outer sleeve 21 and the inner sleeve 22 are conductors. The outer sleeve 21 is spacedly sleeved on the outside of the inner sleeve 22. An axially extending wire passage 221 is formed in the inner sleeve 22 for the wire 11 to pass through.

[0044] For example, combined with Figures 1 to 3 , the choke structure 20 is configured as a conductor. For example, the choke structure 20 can be configured as a metal part. The outer sleeve 21 is sleeved on the radial outside of the inner sleeve 22 and is coaxially arranged. And the outer sleeve 21 and the inner sleeve 22 are spaced in the radial direction. Air is filled between the outer sleeve 21 and the inner sleeve 22. In the axial direction, the inner sleeve 22 is integrally arranged inside the outer sleeve 21, and the inner sleeve 22 forms a wire passage 221. The wire 11 of the electric heating element 10 can extend out of the microwave cooking cavity 210 through the wire passage 221 to the outside of the microwave cooking cavity 210, so as to facilitate the electrical connection between the wire 11 and the power cord of the microwave cooking device 1000.

[0045] It should be noted that the "axial direction" and "radial direction" are direction definitions described with reference to the direction of the choke structure 20.

[0046] The choke structure 20 is equivalent to a coaxial short-circuit breaker (which can also be understood as a coaxial shield). It has coaxial shielding characteristics, so that the choke structure 20 plays a role in shielding microwaves, reducing the amount of microwaves led out from the microwave cooking cavity 210 through the electric heating element 10 and the wire 11, thereby reducing the microwave leakage of the microwave cooking device 1000 and improving the use safety of the microwave cooking device 1000.

[0047] Among them, the inner sleeve 22 is equivalent to the inner conductor of a coaxial short-circuit breaker. The inner conductor can reduce the conduction of electric field interference. The outer sleeve 21 is equivalent to the outer conductor of a coaxial short-circuit breaker. The outer conductor can guide the external electric field to the ground to avoid interference of the external electric field on signal transmission. The air between the inner sleeve 22 and the outer sleeve 21 is equivalent to the dielectric layer of a coaxial short-circuit breaker. The dielectric layer can guide the external electromagnetic field to the ground. The choke structure 20 can choke the microwaves entering the choke structure 20 inside the choke structure 20 to prevent microwave leakage, that is, to realize the function of the choke structure 20 shielding microwaves.

[0048] Since the electric heating element 10 is arranged in the microwave cooking cavity 210, microwave energy will act on the electric heating element 10 and be led out through the wire 11. In the related art, the anti-leakage device provided on the microwave cooking device has a poor shielding effect on microwaves, resulting in a problem of a large amount of microwave leakage in the microwave cooking device, affecting the use safety of the microwave cooking device.

[0049] In this application, by providing the choke structure 20, the choke structure 20 includes an outer sleeve 21 and an inner sleeve 22 that are sleeved and spaced apart in the radial direction. The choke structure 20 is equivalent to a coaxial short-circuit breaker and has coaxial shielding characteristics, so that the choke structure 20 plays a role in shielding microwaves, reducing the amount of microwaves led out from the microwave cooking cavity 210 through the electric heating element 10 and the wire 11, thereby reducing the microwave leakage amount of the microwave cooking device 1000 and improving the use safety of the microwave cooking device 1000.

[0050] Combined with Figure 4 and Figure 5 , in some embodiments of the present utility model, the length L1 of the inner sleeve 22 in the axial direction is one-quarter of the microwave wavelength generated by the microwave cooking device 1000.

[0051] Since the choke structure 20 can be equivalent to a coaxial short-circuit breaker, based on the quarter-wavelength choke design principle of the coaxial short-circuit breaker, by setting the length L1 of the inner sleeve 22 in the axial direction to be one-quarter of the microwave wavelength generated by the microwave cooking device 1000, to be equivalent to a quarter-wavelength transmission line (the transmission line can be understood as the physical length of the coaxial line). When the length of the transmission line is one-quarter of the wavelength, there is a short-circuit or open-circuit situation at the end of the choke structure 20 far from the electric heating element 10, and it cannot transmit microwaves, thereby enhancing the function of the choke structure 20 in shielding microwaves and being beneficial to further reducing the amount of microwaves led out through the wire 11.

[0052] Exemplarily, the electric heating element 10 can be configured as a graphene baking tube. Since the conductivity of the graphene baking tube is higher than that of a common metal tube, the wave guiding performance of the graphene baking tube is relatively strong. In the related art, the leak-proof wave device cannot meet the scenario where a graphene baking tube is applied to a microwave cooking device. For a microwave cooking device using a conventional leak-proof wave device, the microwave leakage value at the tail end of its graphene baking tube is as high as 9.99 mW / cm 2 。

[0053] Referring to Figure 6 , through simulation analysis, it can be seen that during the use of the heating assembly 100 of the present application, the microwave electric field is restrained between the inner sleeve 22 and the outer sleeve 21, that is, the choke structure 20 of the present application has a good function of shielding microwaves.

[0054] When the electric heating element 10 is configured as a graphene baking tube, the microwave leakage value at the tail end of the graphene baking tube (i.e., the end where the wire 11 extends out) is 0.36 mW / cm 2 , which is much smaller than the national microwave leakage safety value requirement, effectively improving the use safety of the microwave cooking device 1000.

[0055] Combining Figure 4 and Figure 5 , in some embodiments of the present invention, in the axial direction, the length L1 of the inner sleeve 22 and the length L2 of the outer sleeve 21 satisfy the relational expression: 7 / 10 ≤ L1 / L2 ≤ 5 / 6.

[0056] The microwave wavelength generated by the microwave cooking device 1000 is usually 122 mm to 126 mm. Exemplarily, the length L1 of the inner sleeve 22 can be 25 mm to 35 mm, so that the length of the inner sleeve 22 can be one quarter of the microwave wavelength generated by the microwave cooking device 1000, which is beneficial to ensuring the microwave shielding effect of the choke structure 20.

[0057] The length L2 of the outer sleeve 21 can be 30 mm to 50 mm, so as to facilitate placing the inner sleeve 22 entirely in the outer sleeve 21 and ensure that the choke structure 20 can be equivalent to a coaxial short-circuit breaker.

[0058] It can be understood that the length L1 of the inner sleeve 22 and the length L2 of the outer sleeve 21 can be adjusted according to the microwave wavelengths generated by different microwave cooking devices 1000, and no specific limitation is made here, as long as the microwave shielding effect of the choke structure 20 is ensured.

[0059] Combining Figure 4 and Figure 5, the radius Ri of the inner sleeve 22 and the radius Ro of the outer sleeve 21 satisfy the relationship: 1.5*Ri ≤ Ro ≤ 3*Ri. By making the radius Ro of the outer sleeve 21 ≥ 1.5*Ri, it is convenient to arrange the inner sleeve 22 inside the outer sleeve 21. At the same time, it can ensure that the dielectric layer (i.e., the air filled between the inner sleeve 22 and the outer sleeve 21) has an appropriate thickness. By making the radius Ro of the outer sleeve 21 ≤ 3*Ri, it is beneficial to prevent a large amount of microwave leakage due to the too large aperture of the outer sleeve 21.

[0060] Optionally, the inner sleeve 22 and the outer sleeve 21 can separately satisfy the relationship 7 / 10 ≤ L1 / L2 ≤ 5 / 6, or the inner sleeve 22 and the outer sleeve 21 can separately satisfy the relationship 1.5Ri ≤ Ro ≤ 3Ri, or the inner sleeve 22 and the outer sleeve 21 can simultaneously satisfy the relationships 7 / 10 ≤ L1 / L2 ≤ 5 / 6 and 1.5Ri ≤ Ro ≤ 3Ri. The specific arrangement of the inner sleeve 22 and the outer sleeve 21 can be determined according to actual production requirements and will not be specifically limited here.

[0061] Combined with Figure 1 and Figure 2 , an installation flange 23 is formed on the outer peripheral wall of the outer sleeve 21. A connecting member 24 is connected between the outer sleeve 21 and the inner sleeve 22. The connecting member 24 and the installation flange 23 are arranged opposite to each other in the radial direction, or the connecting member 24 and the installation flange 23 are arranged offset in the axial direction.

[0062] The connecting member 24 can completely space the outer sleeve 21 and the inner sleeve 22 apart in the radial direction, and the inner sleeve 22 and the outer sleeve 21 can be connected in the radial direction through the connecting member 24. Since the installation flange 23 is formed on the outer peripheral wall of the outer sleeve 21, by connecting the inner sleeve 22 and the outer sleeve 21, it is convenient for the inner sleeve 22 and the outer sleeve 21 to be installed on the microwave cooking device 1000 through the installation flange 23 at the same time, which is beneficial to improving the assembly convenience of the choke structure 20.

[0063] Among them, combined with Figures 7 to 10 , the connecting member 24 can be arranged opposite to the installation flange 23 in the radial direction, which is convenient for the positioning and installation of the connecting member 24 and is beneficial to improving the assembly convenience of the choke structure 20; combined with Figure 4 and Figure 5 , in the axial direction, the connecting member 24 can be arranged offset from the installation flange 23, which is beneficial to reducing the assembly precision requirements of the choke structure 20 and thus beneficial to improving the assembly efficiency of the choke structure 20.

[0064] It can be understood that the relative arrangement position between the connecting member 24 and the installation flange 23 can be determined according to actual production requirements and will not be specifically limited here.

[0065] Combined with Figure 4 andFigure 5 The connecting member 24 is located at one axial end of the inner sleeve 22, and the mounting flange 23 is located at one axial end of the outer sleeve 21, and the mounting flange 23 and the connecting member 24 are arranged axially offset.

[0066] The mounting flange 23 is arranged at one end of the outer sleeve 21 relatively close to the cavity wall 220 of the microwave cooking cavity 210, so as to facilitate the connection between the mounting flange 23 and the microwave cooking cavity 210. The connecting member 24 is arranged inside the outer sleeve 21, and the connecting member 24 is axially spaced from the mounting flange 23. The connecting member 24 extends radially towards the central axis of the outer sleeve 21. The inner sleeve 22 is connected to the side of the connecting member 24 away from the outer sleeve 21, and the inner sleeve 22 is coaxially arranged with the outer sleeve 21. Air can be filled between the inner sleeve 22 and the outer sleeve 21. The choke structure 20 can be equivalent to a coaxial short-circuit breaker, so that the choke structure 20 can function as a microwave shield.

[0067] Wherein, the mounting flange 23, the connecting member 24, the outer sleeve 21 and the inner sleeve 22 are integral parts, which is beneficial to simplifying the assembly process of the heating component 100, improving the assembly convenience and assembly efficiency of the heating component 100.

[0068] Combined with Figure 7 and Figure 8 The mounting flange 23 is located at one axial end of the outer sleeve 21, and the mounting flange 23 and the connecting member 24 are arranged opposite to each other in the radial direction.

[0069] The mounting flange 23 is arranged at one end of the outer sleeve 21 relatively close to the cavity wall 220 of the microwave cooking cavity 210 in the axial direction, so as to facilitate the connection between the mounting flange 23 and the cavity wall 220 of the microwave cooking cavity 210. The connecting member 24 is arranged on the radial inner side of the outer sleeve 21 and is arranged opposite to the mounting flange 23 in the radial direction for the positioning and installation of the connecting member 24. The connecting member 24 extends radially towards the central axis of the outer sleeve 21. The inner sleeve 22 is connected to the side of the connecting member 24 away from the outer sleeve 21, and the inner sleeve 22 is coaxially arranged with the outer sleeve 21. Air can be filled between the inner sleeve 22 and the outer sleeve 21. The choke structure 20 can be equivalent to a coaxial short-circuit breaker, so that the choke structure 20 can function as a microwave shield, and this structure is applicable to the structure where the heating component 100 does not have the following protective member 30.

[0070] Combined with Figure 9 and Figure 10 The mounting flange 23 is spaced between the two axial ends of the outer sleeve 21, and the mounting flange 23 and the connecting member 24 are arranged directly opposite to each other in the radial direction.

[0071] In the axial direction, the mounting flange 23 is arranged between the two ends of the outer sleeve 21, and the mounting flange 23 is arranged relatively close to one end of the outer sleeve 21 close to the cavity wall 220 of the microwave cooking cavity 210, so as to facilitate the mounting flange 23 to be installed on the cavity wall 220 of the microwave cooking cavity 210. The connecting member 24 is arranged in the outer sleeve 21, and the connecting member 24 is arranged opposite to the mounting flange 23 in the radial direction, and the connecting member 24 extends in the radial direction toward the center axis of the outer sleeve 21. The inner sleeve 22 is connected to the side of the connecting member 24 away from the outer sleeve 21, and the inner sleeve 22 is coaxially arranged with the outer sleeve 21. Air can be filled between the inner sleeve 22 and the outer sleeve 21. The choke structure 20 can be equivalent to a coaxial line short circuiter, so that the choke structure 20 can play the function of shielding microwaves.

[0072] Among them, the part of the outer sleeve 21 located on the side of the mounting flange 23 away from the inner sleeve 22, the mounting flange 23, the connecting piece 24 and the inner sleeve 22 are an integrated part, and the part of the outer sleeve 21 located on the side of the mounting flange 23 close to the inner sleeve 22 is separately molded and installed on the mounting flange 23, which is beneficial to improving the assembly convenience of the choke structure 20 and facilitating improving the processing efficiency of the choke structure 20.

[0073] Optionally, the outer sleeve 21 as a whole, the mounting flange 23, the connector 24 and the inner sleeve 22 can be formed as an integral part, which is helpful to simplify the assembly process of the heating component 100 and improve the assembly convenience and efficiency of the heating component 100.

[0074] Combination Figures 1 to 3 The electric heating element 10 and the choke structure 20 are spaced apart, and the heating assembly 100 further includes: a protective element 30, which is fitted between the electric heating element 10 and the choke structure 20 and wraps the portion of the wire 11 located between the electric heating element 10 and the choke structure 20.

[0075] The protective member 30 can be installed at the tail end of the electric heating element 10 (i.e., the end of the wire 11 extending from the electric heating element 10), and the wire 11 can pass through the protective member 30 and extend into the choke structure 20. The protective member 30 protects the wire 11, which is beneficial to improving the stability of the electrical connection of the electric heating element 10, and the protective member 30 can block the heat generated by the electric heating element 10, thereby reducing the impact of the heat generated by the electric heating element 10 on other components around it.

[0076] The end of the protective member 30 away from the electric heating member 10 can cooperate with the choke structure 20 (for example: the end of the protective member 30 away from the electric heating member 10 can be plugged into the choke structure 20), so that the wire 11 can extend from the protective member 30 into the choke structure 20, which is beneficial to improving the assembly convenience of the wire 11 and the choke structure 20.

[0077] In some embodiments of the present utility model, the protective member 30 is a ceramic member. The ceramic member has a small coefficient of thermal expansion and is not prone to deformation under high-temperature working conditions, which is conducive to ensuring the cooperation stability between the protective member 30, the choke structure 20, and the electric heating member 10. Moreover, the ceramic member has a low thermal conductivity. Constructing the protective member 30 as a ceramic member can endow the protective member 30 with good heat insulation performance, thereby being conducive to improving the effect of the protective member 30 in blocking the heat generated by the electric heating member 10 and further reducing the influence of the heat generated by the electric heating member 10 on its surrounding components.

[0078] Combined with Figures 1 to 5 and Figure 9 and Figure 10 , the two axial ends of the outer sleeve 21 are respectively a first end 211 and a second end 212. One axial end of the inner sleeve 22 is disposed at an interval between the first end 211 and the second end 212, so that an installation groove 201 is defined between one axial end of the inner sleeve 22 and the first end 211, and the protective member 30 is inserted into the installation groove 201.

[0079] Combined with Figure 4 and Figure 5 and Figure 9 and Figure 10 , one end of the outer sleeve 21 arranged close to the electric heating member 10 in the axial direction is defined as the first end 211 of the outer sleeve 21, and one end of the outer sleeve 21 arranged far from the electric heating member 10 in the axial direction is defined as the second end 212 of the outer sleeve 21. One end of the inner sleeve 22 close to the electric heating member 10 in the axial direction is spaced from the first end 211, so that an installation groove 201 is defined between one end of the inner sleeve 22 close to the electric heating member 10 in the axial direction and the first end 211. Combined with Figures 1 to 3 , the protective member 30 can be inserted into the installation groove 201, so as to facilitate the positioning and cooperation between the protective member 30 and the installation groove 201, thereby facilitating the wire 11 to extend into the wire passing channel 221 and pass out of the wire passing channel 221.

[0080] Combined with Figures 1 to 3 and Figure 11 and Figure 12 , the cooking device according to the embodiment of the present utility model includes a housing 200 and the above-mentioned heating assembly 100. The housing 200 defines a microwave cooking cavity 210. The electric heating member 10 is disposed in the microwave cooking cavity 210. An installation hole 2201 is formed on the cavity wall 220 of the microwave cooking cavity 210. The choke structure 20 is installed at the installation hole 2201. The wire 11 extends out of the microwave cooking cavity 210 through the wire passing channel 221 and is electrically connected to the power supply line.

[0081] The housing 200 defines a microwave cooking cavity 210. The electric heating element 10 is installed on the cavity wall 220 of the microwave cooking cavity 210, and an installation hole 2201 penetrating through it is formed on the cavity wall 220 of the microwave cooking cavity 210. The wire 11 of the electric heating element 10 can extend out of the microwave cooking cavity 210 through the installation hole 2201 and be electrically connected to the power supply line.

[0082] It can be understood that the entire choke structure 20 is disposed inside the microwave cooking cavity 210, or the entire choke structure 20 is disposed outside the microwave cooking cavity 210, or a part of the choke structure 20 is disposed inside the microwave cooking cavity 210 and a part is disposed outside the microwave cooking cavity 210. For example, the choke structure 20 penetrates through the installation hole 2201 from inside the microwave cooking cavity 210 and extends out of the microwave cooking cavity 210 through the installation hole 2201.

[0083] For example, the outer sleeve 21 can be disposed opposite to the installation hole 2201. Among them, the outer sleeve 21 and the inner sleeve 22 can extend out of the microwave cooking cavity 210 through the installation hole 2201 to reduce the space of the microwave cooking cavity 210 occupied by the choke structure 20. The wire 11 passes through the wire passing channel 221 and is electrically connected to the power supply line. The choke structure 20 can play a role in shielding microwaves to reduce the possibility of the wire 11 leading out microwaves and improve the use safety of the microwave cooking device 1000.

[0084] Or, when the space of the microwave cooking cavity 210 is large enough, the choke structure 20 can be disposed inside the microwave cooking cavity 210, that is, both the outer sleeve 21 and the inner sleeve 22 are arranged inside the microwave cooking cavity 210. The specific arrangement position of the choke structure 20 relative to the microwave cooking cavity 210 can be determined according to actual production requirements and is not specifically limited here as long as the effect of the choke structure 20 in shielding microwaves is ensured.

[0085] According to the microwave cooking device 1000 of the present utility model, by providing the choke structure 20, the choke structure 20 includes an outer sleeve 21 and an inner sleeve 22 that are sleeved and spaced apart in the radial direction. The choke structure 20 is equivalent to a coaxial short - circuit breaker and has coaxial shielding characteristics, so that the choke structure 20 plays a role in shielding microwaves, reducing the amount of microwaves led out of the microwave cooking cavity 210 through the electric heating element 10 and the wire 11, thereby reducing the microwave leakage of the microwave cooking device 1000 and improving the use safety of the microwave cooking device 1000.

[0086] In some embodiments of the present utility model, an installation flange 23 is formed on the outer peripheral wall of the outer sleeve 21. A connecting member 24 is connected between the outer sleeve 21 and the inner sleeve 22. The connecting member 24 and the installation flange 23 are arranged opposite to each other in the radial direction, or the connecting member 24 and the installation flange 23 are arranged offset in the axial direction. The installation flange 23 is fixedly connected to the cavity wall 220 of the microwave cooking cavity 210, and the installation flange 23 is in fitting cooperation with the cavity wall 220 of the microwave cooking cavity 210, so that the choke structure 20 can be grounded through the cavity wall 220 of the microwave cooking cavity 210, which is beneficial to improving the anti-leakage effect of the choke structure 20.

[0087] Optionally, the installation flange 23 can be fixedly connected to the inner surface or the outer surface of the microwave cooking cavity 210. The specific installation position of the installation flange 23 can be determined according to actual production requirements and is not specifically limited herein, as long as it is ensured that the installation flange 23 can be in fitting cooperation with the cavity wall 220 of the microwave cooking cavity 210.

[0088] Combined with Figure 1 and Figure 2 , in some embodiments of the present utility model, a steam generating device (not shown) can be provided in the microwave cooking device 1000 to enable the microwave cooking device 1000 to have a steam function. At this time, a sealing member 40 can be provided in the installation groove 201. The protective member 30 can be in plug-in cooperation with the sealing member 40, and the wire 11 can pass through the sealing member 40 and extend into the wire passing channel 221. The wire 11 passes through the wire passing channel 221 and is electrically connected to the power cord. The sealing member 40 can seal the gap between the wire passing channel 221 and the wire 11 at the end of the wire passing channel 221 to prevent steam from leaking through the wire passing channel 221, which is beneficial to improving the effect of steaming food materials in the microwave cooking device 1000.

[0089] Among them, the sealing member 40 can be configured as a silica gel plug.

[0090] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0091] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A heating component, characterized in that: For use in microwave cooking appliances and comprising: an electric heating element, the electric heating element being suitable for being arranged in the microwave cooking cavity of the microwave cooking device and being provided with a wire, the wire being suitable for extending out of the microwave cooking cavity and being used for being electrically connected to a power line of the microwave cooking device; A choke structure, the choke structure includes an outer sleeve and an inner sleeve, both of which are conductors, and the outer sleeve is sleeved on the outside of the inner sleeve at intervals, and a wire passing channel extending in an axial direction is formed in the inner sleeve, and the wire passing channel is used for the wire to pass through.

2. The heating assembly according to claim 1, characterized in that The length L1 of the inner sleeve in the axial direction is one quarter of the wavelength of the microwaves generated by the microwave cooking device.

3. The heating assembly according to claim 1, characterized in that In the axial direction, the length L1 of the inner sleeve and the length L2 of the outer sleeve satisfy the relationship: 7 / 10≤L1 / L2≤5 / 6; and / or, The radius Ri of the inner sleeve and the radius Ro of the outer sleeve satisfy the relationship: 1.5*Ri≤Ro≤3*Ri.

4. The heating assembly according to claim 1, characterized in that The outer peripheral wall of the outer sleeve is formed with a mounting flange, and a connecting piece is connected between the outer sleeve and the inner sleeve. The connecting piece and the mounting flange are arranged opposite to each other in the radial direction, or the connecting piece and the mounting flange are arranged offset in the axial direction.

5. The heating assembly according to claim 4, characterized in that The connecting piece is located at one axial end of the inner sleeve. The mounting flange is located at one axial end of the outer sleeve and is axially offset from the connecting member, and the mounting flange, the connecting member, the outer sleeve and the inner sleeve are an integral part; or, The mounting flange is located at one axial end of the outer sleeve and is arranged opposite to the connecting member in the radial direction, and the mounting flange, the connecting member and the inner sleeve are an integral part; or, The mounting flange is spaced between the axial ends of the outer sleeve and is arranged radially opposite to the connecting piece. The portion of the outer sleeve located on the side of the mounting flange away from the inner sleeve, the mounting flange, the connecting piece and the inner sleeve are an integral part.

6. The heating assembly according to any one of claims 1 to 5, characterized in that: The electric heating element is spaced apart from the choke structure, and the heating assembly further comprises: A protective member is fitted between the electric heater and the choke structure and wraps a portion of the wire located between the electric heater and the choke structure.

7. The heating assembly according to claim 6, characterized in that The protective element is a ceramic element.

8. The heating assembly according to claim 6, characterized in that The axial ends of the outer sleeve are respectively a first end and a second end, and one axial end of the inner sleeve is spaced between the first end and the second end, so that a mounting groove is defined between the one axial end of the inner sleeve and the first end, and the protective member is inserted into the mounting groove.

9. A microwave cooking device, characterized in that: It comprises a shell and a heating component according to any one of claims 1 to 8, the shell defines a microwave cooking cavity, the electric heating element is arranged in the microwave cooking cavity, a mounting hole is formed on the cavity wall of the microwave cooking cavity, the choke structure is installed at the mounting hole, and the wire extends out of the microwave cooking cavity through the wire passage and is electrically connected to a power line.

10. The microwave cooking device according to claim 9, characterized in that: The heating assembly is the heating assembly according to claim 4 or 5, and the mounting flange is fixedly connected to the inner surface or the outer surface of the cavity wall of the microwave cooking cavity.

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