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 inductance 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 inductance structure is arranged on the electric heating piece. The wire is suitable for extending out of the microwave cooking cavity and is used for being electrically connected with a power line of the microwave cooking equipment, the choke inductance structure comprises an inductance coil, and the inductance coil is connected to the wire in series. Therefore, the choke inductance structure is arranged, the inductance coil of the choke inductance structure can play a role in shielding microwaves, the amount of the microwaves led out through the wire is reduced, the amount of the microwaves leaked by the microwave cooking equipment is reduced, 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] Microwave ovens are widely used in various social scenarios because they can quickly and conveniently heat food. However, the single microwave function is now difficult to meet various cooking needs, so multifunctional composite products have emerged, and steam and barbecue functions are added by setting up grilling tubes; generally, the grilling tubes of microwave ovens are arranged in the microwave cooking cavity, and microwave energy will act on the grilling tubes and be led out through wires.

[0003] In the related art, the anti-leakage device provided on the microwave oven has a poor effect of preventing leakage waves, resulting in a problem that a large amount of microwaves still leak from the microwave oven, affecting the use safety of the microwave oven. Summary of the Utility Model

[0004] The utility model aims to at least solve 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 amount of microwave leakage.

[0005] 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 be electrically connected to the power supply wire of the microwave cooking device; a choke inductance structure, which includes an inductance coil, and the inductance coil is connected in series to the wire.

[0006] According to the heating component of the embodiment of the utility model, by setting up the choke inductance structure, the inductance coil of the choke inductance structure can play a role in shielding microwaves, which is beneficial to reducing the amount of microwaves led out through the wire, and thus is beneficial to reducing the amount of microwaves leaked from the microwave cooking device and improving the use safety of the microwave cooking device.

[0007] According to some embodiments of the utility model, the heating component further comprises: a metal sleeve, which is sleeved outside the inductance coil at intervals, and relative to one end of the metal sleeve adjacent to the electric heating element, the center of the inductance coil in the axial direction is arranged adjacent to the end of the metal sleeve far from the electric heating element.

[0008] According to some embodiments of the utility model, one end of the inductance coil far from the electric heating element in the axial direction extends out of the metal sleeve.

[0009] According to some embodiments of the present utility model, the length of the end of the inductance coil extending out of the metal sleeve in the axial direction away from the electric heating element is B, the length of the inductance coil in the axial direction is C1, and B and C1 satisfy the relationship: 0 < B ≤ C1 / 3.

[0010] According to some embodiments of the present utility model, the heating assembly further includes a metal sleeve, the metal sleeve is sleeved outside the inductance coil at intervals and is suitable for being grounded, the heating assembly further includes an insulating and heat-insulating member, in the radial direction, the insulating and heat-insulating member is located between the metal sleeve and the inductance coil to separate the metal sleeve from the inductance coil; and / or, the heating assembly further includes a protective member, the protective member is fitted between the electric heating element and the metal sleeve and wraps the part of the wire located between the electric heating element and the metal sleeve.

[0011] According to some embodiments of the present utility model, the heating assembly includes an insulating and heat-insulating member and a protective member, and the insulating and heat-insulating member and the protective member are an integral part.

[0012] According to some embodiments of the present utility model, the heating assembly includes an insulating and heat-insulating member, and both the insulating and heat-insulating member and the inductance coil extend out of the metal sleeve at the end in the axial direction away from the electric heating element, and the length of the inductance coil extending out of the metal sleeve is less than or equal to the length of the insulating and heat-insulating member extending out of the metal sleeve.

[0013] According to some embodiments of the present utility model, the choke inductance structure further includes a magnetic core, and the inductance coil is wound around the outer peripheral side of the magnetic core.

[0014] According to some embodiments of the present utility model, the heating assembly further includes a metal sleeve, the metal sleeve is sleeved outside the inductance coil at intervals and is suitable for being grounded. The length of the end of the inductance coil extending out of the metal sleeve in the axial direction away from the electric heating element is B, 0 < B ≤ C / 3, C = max{C1, C2}, C1 is the length of the inductance coil in the axial direction, and C2 is the length of the magnetic core in the axial direction.

[0015] The second object of the present utility model is to propose a microwave cooking device.

[0016] A microwave cooking device includes a housing and the above-mentioned heating assembly, the housing defines a microwave cooking cavity, the electric heating element is arranged in the microwave cooking cavity, an installation hole is formed on the cavity wall of the microwave cooking cavity, the choke inductance structure is installed at the installation hole, and the wire extends out of the microwave cooking cavity through the installation hole and is suitable for being electrically connected to a power supply line.

[0017] The microwave cooking device has the same advantages as the above-mentioned heating component, which will not be elaborated here one by one.

[0018] According to some embodiments of the present invention, the inductance coil is arranged outside the microwave cooking cavity.

[0019] According to some embodiments of the present invention, the aperture diameter D of the mounting hole is < 20 mm.

[0020] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0022] Figure 1 is a cross-sectional view of the microwave cooking device according to an embodiment of the present invention;

[0023] Figure 2 is a partial cross-sectional view of the microwave cooking device according to an embodiment of the present invention;

[0024] Figure 3 is a structural schematic diagram of the heating component according to an embodiment of the present invention;

[0025] Figure 4 is an exploded view of the heating component according to an embodiment of the present invention;

[0026] Figure 5 is an exploded view of the choke inductance structure according to an embodiment of the present invention;

[0027] Figure 6 is a structural schematic of the microwave cooking device according to an embodiment of the present invention Figure 1 ;

[0028] Figure 7 is a structural schematic of the microwave cooking device according to an embodiment of the present invention Figure 2 .

[0029] Reference Signs:

[0030] Heating component 100, Electric heating element 10, Conducting wire 11,

[0031] Choke inductance structure 20, Inductance coil 21, Magnetic core 22,

[0032] Metal sleeve 30, Insulating and heat-insulating member 40, Protective member 50,

[0033] Microwave cooking device 1000, housing 200, microwave cooking cavity 210, cavity wall 2101, mounting hole 2102. Detailed implementation mode

[0034] 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 represent the same or similar elements or elements with the same or similar functions throughout. 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.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "inner", "outer", "axial direction", "radial direction", 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 therefore should not be construed as a limitation to the present utility model. In addition, the features defined with "first" and "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 "a plurality" is two or more.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" 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 directly connected, or indirectly connected 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.

[0037] Next, refer to Figures 1 - 7 Describe the heating component 100 and the microwave cooking device 1000 according to the embodiments of the present utility model.

[0038] As Figure 1 shown, for the heating component 100 according to the embodiment of the present utility model, the heating component 100 is used for the microwave cooking device 1000, and the heating component 100 includes: an electric heating element 10, the electric heating element 10 is adapted to be arranged in the microwave cooking cavity 210 of the microwave cooking device 1000 and is provided with a wire 11, and 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.

[0039] 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 bake the food in the microwave cooking cavity 210, enabling the microwave cooking device 1000 to have a baking function, improving the functionality of the microwave cooking device 1000, and facilitating the improvement of the efficiency of cooking food with the microwave cooking device 1000.

[0040] Combined with Figure 1 and Figure 2 , the heating component 100 further includes a choke inductance structure 20. The choke inductance structure 20 includes an inductance coil 21. The inductance coil 21 is connected in series to the wire 11. The inductance coil 21 can play a role in shielding microwaves, facilitating the reduction of the amount of microwaves led out from the microwave cooking cavity 210 through the wire 11, thereby facilitating the reduction of the amount of microwaves leaked from the microwave cooking device 1000 and improving the safety of using the microwave cooking device 1000.

[0041] Since the electric heating element 10 is arranged in the microwave cooking cavity 210, microwave energy acts on the electric heating element 10 and is 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 safety of using the microwave cooking device.

[0042] In this application, by providing the choke inductance structure 20, the inductance coil 21 of the choke inductance structure 20 can play a role in shielding microwaves, facilitating the reduction of the amount of microwaves led out through the wire 11, thereby facilitating the reduction of the amount of microwaves leaked from the microwave cooking device 1000 and improving the safety of using the microwave cooking device 1000.

[0043] Combined with Figure 1 and Figure 2 , in some embodiments of the present utility model, the heating component 100 further includes: a metal sleeve 30. The metal sleeve 30 is sleeved outside the inductance coil 21 at intervals. Relative to the end of the metal sleeve 30 adjacent to the electric heating element 10, the center of the inductance coil 21 in the axial direction is arranged adjacent to the end of the metal sleeve 30 away from the electric heating element 10. Then, in the axial direction, the distance between the end of the metal sleeve 30 away from the electric heating element 10 and the center of the inductance coil 21 in the axial direction is less than the distance between the end of the metal sleeve 30 adjacent to the electric heating element 10 and the center of the inductance coil 21 in the axial direction.

[0044] It should be noted that "axial direction" and "radial direction" refer to the direction definitions described with reference to the direction of the metal sleeve 30.

[0045] Combined with Figure 1 and Figure 2, a metal sleeve 30 is sleeved outside the inductor coil 21, so that the metal sleeve 30 can play a role in protecting the inductor coil 21, and by arranging the metal sleeve 30 at an interval from the inductor coil 21, it is beneficial to prevent electric leakage due to the electrical connection between the metal sleeve 30 and the inductor coil 21.

[0046] Combined with Figure 1 and Figure 2 , one axial end of the metal sleeve 30 is arranged close to the electric heating element 10, and the other axial end of the metal sleeve 30 is arranged far from the electric heating element 10. The inductor coil 21 is arranged inside the metal sleeve 30. By arranging the metal sleeve 30, the installation of the inductor coil 21 is facilitated. The inductor coil 21 can be wound by enameled wire. By arranging the inductor coil 21 relatively close to the end of the metal sleeve 30 far from the electric heating element 10, the inductor coil 21 can be arranged far from the electric heating element 10, which is beneficial to prevent the enameled wire from being melted by the high temperature generated by the electric heating element 10, and thus is beneficial to prevent electric leakage due to the contact between the metal sleeve 30 and the bare conductor.

[0047] It should be noted that the enameled wire is formed by a bare conductor and an insulating layer coated outside the bare conductor. The insulating layer is easily melted by high temperature, and the bare conductor is exposed after the insulating layer is melted.

[0048] Combined with Figure 1 and Figure 2 , in some embodiments of the present invention, one end of the inductor coil 21 far from the electric heating element 10 in the axial direction extends out of the metal sleeve 30.

[0049] Considering that there may be a problem of microwave leakage at the tail end of some metal sleeves 30 (i.e., the end of the metal sleeve 30 far from the electric heating element 10), and the microwave energy can extend a certain distance from the tail end of the metal sleeve 30 to the side far from the electric heating element 10. By making one end of the inductor coil 21 far from the electric heating element 10 in the axial direction extend out of the metal sleeve 30, the inductor coil 21 can shield the microwave energy leaked through the tail end of the metal sleeve 30, which is beneficial to further improve the effect of the choke inductor structure 20 in shielding microwaves, and thus is beneficial to further reduce the amount of microwaves leaked by the microwave cooking device 1000 and improve the use safety of the microwave cooking device 1000.

[0050] Combined with Figure 1 and Figure 2 , the length of the end of the inductor coil 21 far from the electric heating element 10 in the axial direction extending out of the metal sleeve 30 is B, the length of the inductor coil 21 in the axial direction is C1, and B and C1 satisfy the relational expression: 0 < B ≤ C1 / 3.

[0051] By making B > 0, it is beneficial to enable the inductance coil 21 to shield the microwave energy leaking through the end of the metal sleeve 30, thereby facilitating the improvement of the microwave shielding effect of the choke inductance structure 20. By making B ≤ C / 3, while enabling the inductance coil 21 to shield the microwave energy leaking through the end of the metal sleeve 30, it is beneficial to prevent the inductance coil 21 from deflecting relative to the metal sleeve 30 due to the excessive extension of the inductance coil 21 from the metal sleeve 30, thereby facilitating the maintenance of the state where the metal sleeve 30 and the inductance coil 21 are spaced apart.

[0052] Combined with Figures 1 to 3 , the heating assembly 100 further includes a metal sleeve 30 and an insulating and heat-insulating member 40. The metal sleeve 30 is sleeved outside the inductance coil 21 at intervals and is adapted to be grounded. In the radial direction, the insulating and heat-insulating member 40 is located between the metal sleeve 30 and the inductance coil 21 to separate the metal sleeve 30 from the inductance coil 21.

[0053] Combined with Figure 1 and Figure 2 , the metal sleeve 30 is sleeved on the radial outside of the inductance coil 21, and the metal sleeve 30 and the inductance coil 21 are spaced apart in the radial direction. When the metal sleeve 30 is not grounded, the metal sleeve 30 can be equivalent to a conductor, and the metal sleeve 30 can conduct the microwave energy out, resulting in microwave energy leakage. By grounding the metal sleeve 30 so that the metal sleeve 30 can direct the microwave energy to the ground, it is beneficial to reduce the amount of microwave leakage from the microwave cooking device 1000.

[0054] The insulating and heat-insulating member 40 is disposed inside the metal sleeve 30, and the insulating and heat-insulating member 40 is sleeved on the radial outside of the inductance coil 21. The insulating and heat-insulating member 40 can play the role of blocking the heat transferred by the electric heating element 10, which is beneficial to preventing the inductance coil 21 from melting. At the same time, the insulating and heat-insulating member 40 can separate the metal sleeve 30 from the inductance coil 21, and the insulating and heat-insulating member 40 has insulation properties to prevent the inductance coil 21 from being electrically connected to the metal sleeve 30 after melting, thereby preventing the heating assembly 100 from leaking electricity.

[0055] Combined with Figures 1 to 3 , the heating assembly 100 further includes a metal sleeve 30 and a protective member 50. The metal sleeve 30 is sleeved outside the inductance coil 21 at intervals and is adapted to be grounded. The protective member 50 is fitted between the electric heating element 10 and the metal sleeve 30 and wraps the part of the wire 11 located between the electric heating element 10 and the metal sleeve 30.

[0056] The protective member 50 can be installed at the tail end of the electric heating member 10 (i.e., the end of the electric heating member 10 where the wire 11 extends out). The wire 11 can pass through the protective member 50 and extend into the metal sleeve 30. The protective member 50 can play a role in protecting the wire 11, which is beneficial to improving the stability of the electrical connection of the electric heating member 10. And the protective member 50 can play a role in blocking the heat generated by the electric heating member 10, reducing the influence of the heat generated by the electric heating member 10 on other components in the middle guard.

[0057] Optionally, the heating assembly 100 can include both the heat insulation member 40 and the protective member 50 at the same time. The protective member 50 can be connected to the heat insulation member 40. After the wire 11 passes through the protective member 50, it can extend into the heat insulation member 40 and be connected to the inductor coil 21; or the heating assembly 100 can be provided with only one of the heat insulation member 40 or the protective member 50 separately.

[0058] It can be understood that the specific arrangement of the heat insulation member 40 and the protective member 50 can be determined according to actual production requirements and will not be specifically limited here.

[0059] Combined with Figures 1 to 4 , the heating assembly 100 includes the heat insulation member 40 and the protective member 50, and the heat insulation member 40 and the protective member 50 are integral parts.

[0060] The protective member 50 is arranged at one end of the heat insulation member 40 close to the electric heating member 10, and the heat insulation member 40 and the protective member 50 can be formed as an integral part, which is beneficial to simplifying the production and assembly steps of the heating assembly 100 and is beneficial to improving the production efficiency of the heating assembly 100.

[0061] Among them, the heat insulation member 40 and the protective member 50 can be formed as a ceramic integral part. The ceramic material has a small coefficient of thermal expansion and is not prone to deformation under high-temperature working conditions, which is beneficial to improving the cooperation stability between the heat insulation member 40 and the protective member 50 and the electric heating member 10. And the ceramic material has a low thermal conductivity. Constructing the protective member 50 and the heat insulation member 40 as a ceramic integral part can make the protective member 50 and the heat insulation member 40 have good heat insulation performance, thus being beneficial to improving the effect of the protective member 50 and the heat insulation member 40 in blocking the heat generated by the electric heating member 10.

[0062] Combined with Figure 1 and Figure 2 , in some embodiments of the present invention, the heating assembly 100 includes the heat insulation member 40. Both the heat insulation member 40 and the inductor coil 21 extend out of the metal sleeve 30 at one end in the axial direction away from the electric heating member 10, and the length of the inductor coil 21 extending out of the metal sleeve 30 is less than or equal to the length of the heat insulation member 40 extending out of the metal sleeve 30.

[0063] One end of the inductance coil 21 that is axially away from the electric heating element 10 extends out of the metal sleeve 30, so that the inductance coil 21 can shield the microwave energy leaked through the end of the metal sleeve 30. One end of the insulation and heat insulation member 40 that is away from the electric heating element 10 can be flush with one end of the inductance coil 21 that is axially away from the electric heating element 10, that is, the length of the inductance coil 21 extending out of the metal sleeve 30 can be equal to the length of the insulation and heat insulation member 40 extending out of the metal sleeve 30, so as to ensure the effect that the insulation and heat insulation member 40 separates the inductance coil 21 and the metal sleeve 30 and prevent the inductance coil 21 from contacting the metal sleeve 30.

[0064] Combined with Figure 1 and Figure 2 , in the axial direction, one end of the insulation and heat insulation member 40 that is away from the electric heating element 10 extends out of one end of the inductance coil 21 that is axially away from the electric heating element 10, that is, the length of the inductance coil 21 extending out of the metal sleeve 30 is less than the length of the insulation and heat insulation member 40 extending out of the metal sleeve 30, so as to ensure the effect that the insulation and heat insulation member 40 separates the inductance coil 21 and the metal sleeve 30 and prevent the inductance coil 21 from contacting the metal sleeve 30.

[0065] In addition, by making the length of the inductance coil 21 extending out of the metal sleeve 30 less than or equal to the length of the insulation and heat insulation member 40 extending out of the metal sleeve 30, the insulation and heat insulation member 40 can support the inductance coil 21, which is beneficial to preventing the inductance coil 21 from deforming in the axial extension direction.

[0066] In some other embodiments, one end of the inductance coil 21 that is axially away from the electric heating element 10 can extend out of the metal sleeve 30, and one end of the insulation and heat insulation member 40 that is axially away from the electric heating element 10 can be flush with one end of the metal sleeve 30 that is axially away from the electric heating element 10. While the insulation and heat insulation member 40 functions to separate the inductance coil 21 and the metal sleeve 30, it is beneficial to reduce the material consumption of the insulation and heat insulation member 40 and lower the material cost of the heating assembly 100.

[0067] It can be understood that the specific length of the inductance coil 21 extending out of the metal sleeve 30 and the length of the insulation and heat insulation member 40 extending out of the metal sleeve 30 can be determined according to actual production requirements and are not specifically limited herein.

[0068] Combined with Figure 1 and Figure 2 and Figure 4 and Figure 5 , the choke inductance structure 20 further includes a magnetic core 22, and the inductance coil 21 is wound around the outer peripheral side of the magnetic core 22.

[0069] The magnetic core 22 is used to increase the inductance of the choke inductance structure 20. It can be understood that the longer the length of the inductor coil 21, the larger the inductance. By setting the magnetic core 22, the inductance of the choke inductance structure 20 can be increased, the effect of shielding microwaves by the choke inductance structure 20 can be improved, and it is beneficial to shorten the axial length of the inductor coil 21, improve the convenience of arranging the choke inductance structure 20, and reduce the layout space occupied by the choke inductance structure 20, thereby facilitating the miniaturized design of the heating component 100.

[0070] Combined with Figure 1 and Figure 2 In some embodiments of the present invention, the heating component 100 further includes a metal sleeve 30. The metal sleeve 30 is sleeved outside the inductor coil 21 at intervals and is suitable for being grounded. The length of the end of the inductor coil 21 extending out of the metal sleeve 30 in the axial direction is B, where 0 < B ≤ C / 3, C = max{C1, C2}, C1 is the length of the inductor coil 21 in the axial direction, and C2 is the length of the magnetic core 22 in the axial direction.

[0071] The length C1 of the inductor coil 21 in the axial direction can be greater than the length C2 of the magnetic core 22 in the axial direction, or the length C2 of the magnetic core 22 in the axial direction can be greater than the length C of the inductor coil 21 in the axial direction 1， Or the length C1 of the inductor coil 21 in the axial direction can be equal to the length C2 of the magnetic core 22 in the axial direction. Here, no specific limitations are imposed on the length C1 of the inductor coil 21 in the axial direction and the length C2 of the magnetic core 22 in the axial direction, as long as the inductance of the choke inductance structure 20 can meet the usage requirements.

[0072] It can be understood that the shape, size, and inductance value of the choke inductance structure 20 can be adjusted according to actual production requirements, and no specific limitations are made here.

[0073] By making B > 0, it is beneficial to shield the microwave energy leaking through the end of the metal sleeve 30 by the choke inductance structure 20, thereby facilitating the improvement of the effect of shielding microwaves by the choke inductance structure 20. By making B ≤ C / 3, while enabling the choke inductance structure 20 to shield the microwave energy leaking through the end of the metal sleeve 30, it is beneficial to prevent the choke inductance structure 20 from tilting relative to the metal sleeve 30 due to the excessive extension of the choke inductance structure 20 from the metal sleeve 30, thereby facilitating the maintenance of the state where the metal sleeve 30 and the inductor coil 21 are arranged at intervals.

[0074] Combined with Figure 1 and Figure 2, the heating component 100 further includes a metal sleeve 30. The metal sleeve 30 is sleeved outside the inductance coil 21 at intervals and is adapted to be grounded. Relative to one end of the metal sleeve 30 adjacent to the electric heating element 10, the center of the inductance coil 21 in the axial direction is arranged adjacent to the end of the metal sleeve 30 far from the electric heating element 10.

[0075] The metal sleeve 30 can lead out microwave energy and cause microwave energy leakage. By grounding the metal sleeve 30 so that the metal sleeve 30 can direct microwave energy to the ground, it is beneficial to reduce the amount of microwave leakage from the microwave cooking device 1000.

[0076] At the same time, by providing the metal sleeve 30, it is convenient for the installation of the inductance coil 21. The inductance coil 21 can be wound by enameled wire. By arranging the inductance coil 21 relatively close to the end of the metal sleeve 30 far from the electric heating element 10, the inductance coil 21 can be arranged away from the electric heating element 10, which is beneficial to prevent the enameled wire from melting due to the high temperature generated by the electric heating element 10, and thus is beneficial to prevent the metal sleeve 30 from contacting the bare conductor and causing electric leakage.

[0077] In some embodiments of the present invention, 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 an ordinary 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 the graphene baking tube is applied to the microwave cooking device 1000. For the microwave cooking device 1000 adopting a conventional leak-proof wave device, the microwave leakage value at the tail end of the graphene baking tube is as high as 9.99 mW / cm 2 .

[0078] However, the heating component 100 of the present application has a good microwave shielding function. Through simulation analysis, it is measured that 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 less than or equal to 0.5 mW / cm 2 , which is much smaller than the national required microwave leakage safety value, effectively improving the use safety of the microwave cooking device 1000.

[0079] Combined Figure 1 and Figure 2 as well as Figure 6 and Figure 7 , according to the microwave cooking device 1000 described in the embodiments of the present invention, including the above-mentioned heating component 100, the housing 200 defines a microwave cooking cavity 210. The electric heating element 10 is arranged in the microwave cooking cavity 210. An installation hole 2102 is formed on the cavity wall 2101 of the microwave cooking cavity 210. The choke inductance structure 20 is installed at the installation hole 2102. The wire 11 extends out of the microwave cooking cavity 210 through the installation hole 2102 and is adapted to be electrically connected to the power supply line.

[0080] The housing 200 defines a microwave cooking cavity 210. The electric heating element 10 is installed on the cavity wall 2101 of the microwave cooking cavity 210, and an installation hole 2102 penetrating through it is formed on the cavity wall 2101 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 2102 and be electrically connected to the power supply line.

[0081] The choke inductance structure 20 is installed at the installation hole 2102. The wire 11 is connected to the choke inductance structure 20. The choke inductance structure 20 can play a role in shielding microwaves, which is beneficial to reducing the amount of microwaves led out through the wire 11, thereby being beneficial to reducing the amount of microwaves leaked by the microwave cooking device 1000 and improving the use safety of the microwave cooking device 1000.

[0082] It can be understood that the entire choke inductance structure 20 is arranged inside the microwave cooking cavity 210, or the entire choke inductance structure 20 is arranged outside the microwave cooking cavity 210, or a part of the choke inductance structure 20 is arranged inside the microwave cooking cavity 210 and a part is arranged outside the microwave cooking cavity 210. For example, the choke inductance 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 2102.

[0083] According to the microwave cooking device 1000 described in the embodiment of the present invention, by arranging the choke inductance structure 20, the inductance coil 21 of the choke inductance structure 20 can play a role in shielding microwaves, which is beneficial to reducing the amount of microwaves led out through the wire 11, thereby being beneficial to reducing the amount of microwaves leaked by the microwave cooking device 1000 and improving the use safety of the microwave cooking device 1000.

[0084] Combined with Figure 1 and Figure 2 , in some embodiments of the present invention, the inductance coil 21 is arranged outside the microwave cooking cavity 210 to facilitate the arrangement of the inductance coil 21, and the inductance coil 21 does not need to occupy the space of the microwave cooking cavity 210, which is beneficial to increasing the available space inside the microwave cooking cavity 210.

[0085] Combined with Figure 1 and Figure 2 , in some embodiments of the present invention, the aperture D of the installation hole 2102 < 20 mm, so as to facilitate the wire 11 to pass through the installation hole 2102 and is beneficial to preventing part of the microwaves from leaking through the installation hole 2102 due to the too large aperture of the installation hole 2102, thereby being beneficial to further reducing the microwave leakage amount of the microwave cooking device 1000.

[0086] In some embodiments of the present utility model, the metal sleeve 30 may be integrally formed with the cavity wall 2101 of the microwave cooking cavity 210, and the mounting hole 2102 allows the wire 11 to pass through; or the metal sleeve 30 may be separately provided from the cavity wall 2101 of the microwave cooking cavity 210, and the metal sleeve 30 may be installed on the cavity wall 2101 of the microwave cooking cavity 210 by means of welding, riveting or screw fixation, etc., to ensure good contact between the metal sleeve 30 and the cavity wall 2101 of the microwave cooking cavity 210. And a ground wire is provided on the cavity wall 2101 of the microwave cooking cavity 210 (which can also be understood as the housing 200), and the metal sleeve 30 is connected to the cavity wall 2101 of the microwave cooking cavity 210 to achieve grounding. At this time, the metal sleeve 30 may be located outside the cavity wall 2101, or the metal sleeve 30 may be located inside the cavity wall 2101, or a part of the metal sleeve 30 is located outside the cavity wall 2101 and a part is located inside the cavity wall 2101. At this time, the metal sleeve 30 passes through the mounting hole 2102.

[0087] In some embodiments of the present utility model, a steam generating device (not shown) may be provided in the microwave cooking device 1000 to enable the microwave cooking device 1000 to have a steam function. At this time, a seal (not shown) may be provided at one end of the choke inductance structure 20 away from the electric heating element 10. The wire 11 may pass through the seal and be electrically connected to the power cord of the microwave cooking device 1000. The seal may seal the gap between the choke inductance structure 20 and the wire 11 to prevent steam leakage, which is beneficial to improving the effect of steaming food materials in the microwave cooking device 1000.

[0088] Among them, the seal may be configured as a silicone plug.

[0089] 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0090] 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 inductor structure, wherein the choke inductor structure comprises an inductor coil, and the inductor coil is connected in series with the conducting wire.

2. The heating assembly according to claim 1, characterized in that Also includes: A metal sleeve is sleeved outside the inductor coil at intervals, and relative to an end of the metal sleeve adjacent to the electric heating element, the center of the inductor coil in the axial direction is arranged adjacent to an end of the metal sleeve away from the electric heating element.

3. The heating assembly according to claim 2, characterized in that One end of the inductor coil away from the electric heating element in the axial direction extends out of the metal sleeve.

4. The heating assembly according to claim 3, characterized in that The length of the end of the inductor coil extending from the metal sleeve in the axial direction away from the electric heating element is B, and the length of the inductor coil in the axial direction is C1. B and C1 satisfy the relationship: 0<B≤C1 / 3.

5. The heating assembly according to claim 1, characterized in that It also includes a metal sleeve, which is sleeved outside the inductor coil at intervals and is suitable for grounding. The heating assembly further comprises an insulating heat-insulating member, wherein in a radial direction, the insulating heat-insulating member is located between the metal sleeve and the inductor coil to separate the metal sleeve from the inductor coil; and / or, The heating assembly further comprises a protective member, which is fitted between the electric heating member and the metal sleeve and wraps a portion of the wire located between the electric heating member and the metal sleeve.

6. The heating assembly according to claim 5, characterized in that The heating assembly comprises an insulating heat-insulating component and a protective component, and the insulating heat-insulating component and the protective component are integrated.

7. The heating assembly according to claim 5, characterized in that The heating assembly includes an insulating heat-insulating member, and both the insulating heat-insulating member and the inductor coil extend out of the metal sleeve at one end away from the electric heating member in the axial direction, and the length of the inductor coil extending out of the metal sleeve is less than or equal to the length of the insulating heat-insulating member extending out of the metal sleeve.

8. The heating assembly according to any one of claims 1 to 7, characterized in that: The choke inductor structure further includes a magnetic core, and the inductor coil is wound around the outer periphery of the magnetic core.

9. The heating assembly according to claim 8, characterized in that It also includes a metal sleeve, which is sleeved outside the inductor coil at intervals and is suitable for grounding. The length of the end of the inductor coil extending from the metal sleeve in the axial direction away from the electric heating element is B, 0<B≤C / 3, C=max{C1, C2}, C1 is the length of the inductor coil in the axial direction, and C2 is the length of the magnetic core in the axial direction.

10. A microwave cooking device, characterized in that: It comprises a shell and a heating component according to any one of claims 1 to 9, 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 inductor structure is installed at the mounting hole, the wire extends out of the microwave cooking cavity through the mounting hole and is suitable for being electrically connected to a power cord.

11. The microwave cooking device according to claim 10, characterized in that: The inductor coil is arranged outside the microwave cooking cavity.

12. The microwave cooking device according to claim 10 or 11, characterized in that: The hole diameter D of the mounting hole is less than 20 mm.

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