CN120201603A - Heating element, heating component and microwave cooking appliance - Google Patents
Heating element, heating component and microwave cooking appliance Download PDFInfo
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- CN120201603A CN120201603A CN202311794859.XA CN202311794859A CN120201603A CN 120201603 A CN120201603 A CN 120201603A CN 202311794859 A CN202311794859 A CN 202311794859A CN 120201603 A CN120201603 A CN 120201603A
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- Prior art keywords
- heating
- microwave
- heating element
- tube
- heating tube
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/36—Protective guards, e.g. for preventing access to heated parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/02—Stoves or ranges heated by electric energy using microwaves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Resistance Heating (AREA)
Abstract
本申请公开了一种加热件、加热组件及微波烹饪器具，该加热件包括发热管、安装座和微波屏蔽罩，发热管包括发热部，发热部内设有发热体，发热体为碳纤维发热体或石墨发热体，安装座与发热管相连，微波屏蔽罩罩设在发热管的外侧，并与安装座配合。当本申请中的加热件用于微波烹饪器时，在利用微波和发热管同时对烹饪腔内的食物进行加热的过程中，发热管的热量通过微波屏蔽罩辐射至烹饪腔内，以实现对烹饪腔内的食物进行加热，烹饪腔内的微波在微波屏蔽罩的屏蔽下无法到达发热管的位置，从而减少了发热管在微波环境中使用时出现的打火的问题，从而提高了使用过程中的安全性。
The present application discloses a heating element, a heating assembly and a microwave cooking utensil. The heating element includes a heating tube, a mounting seat and a microwave shielding cover. The heating tube includes a heating portion, a heating element is arranged inside the heating portion, and the heating element is a carbon fiber heating element or a graphite heating element. The mounting seat is connected to the heating tube, and the microwave shielding cover is arranged on the outside of the heating tube and cooperates with the mounting seat. When the heating element in the present application is used in a microwave cooker, in the process of heating food in a cooking cavity by using microwaves and the heating tube at the same time, the heat of the heating tube is radiated into the cooking cavity through the microwave shielding cover to heat the food in the cooking cavity. The microwave in the cooking cavity cannot reach the position of the heating tube under the shielding of the microwave shielding cover, thereby reducing the problem of ignition when the heating tube is used in a microwave environment, thereby improving the safety during use.
Description
Technical Field
The application belongs to the technical field of household appliances, and particularly relates to a heating element, a heating assembly and a microwave cooking appliance.
Background
This section provides merely background information related to the present disclosure and is not necessarily prior art.
In a cooking appliance with a microwave cooking function, a heating tube is generally further included, and the heating tube and microwaves are utilized to heat food together, so that the cooking effect of the food can be improved.
In the existing heating tube, the heating element generally comprises carbon fiber or graphite, and when the heating element is used in a microwave environment, the carbon fiber or graphite is easy to strike fire, so that the safety in the use process is reduced.
Disclosure of Invention
The application aims to at least solve the problem of ignition when the traditional heating tube is used in a microwave environment. The aim is achieved by the following technical scheme:
A first aspect of the present application proposes a heating element for a microwave cooking appliance, the heating element comprising:
the heating tube comprises a heating part, a heating body is arranged in the heating part, and the heating body is a carbon fiber heating body or a graphite heating body;
the mounting seat is connected with the heating tube;
the microwave shielding cover is arranged on the outer side of the heating tube and matched with the mounting seat.
When the heating element is used for the microwave cooker, in the process of heating food in the cooking cavity by utilizing microwaves and the heating tube, the heat of the heating tube is radiated into the cooking cavity through the microwave shielding cover so as to heat the food in the cooking cavity, and microwaves in the cooking cavity cannot reach the position of the heating tube under the shielding of the microwave shielding cover, so that the problem of ignition of the heating tube when the heating tube is used in a microwave environment is reduced, and the safety in the use process is improved.
In addition, the heating element according to the application may have the following additional technical features:
In some embodiments of the present application, the number of the mounting seats is two, the two mounting seats are spaced along the length direction of the heating tube, and the microwave shielding cover is respectively matched with the two mounting seats.
In some embodiments of the present application, the heating tube further includes a heating portion and two connection portions, the two connection portions are respectively connected to opposite ends of the heating portion along a length direction of the heating tube, each connection portion is connected to one of the mounting seats, and the heating body is disposed inside the heating portion.
In some embodiments of the present application, the microwave shield includes two oppositely disposed mounting portions along the length of the heat generating tube, the mounting portions being in mating engagement with the mounting base.
In some embodiments of the present application, the mounting seat includes a receiving groove with an opening, the connecting portion is inserted and fixed in the receiving groove, and the mounting portion is inserted in the receiving groove and located between the connecting portion and an inner side wall of the receiving groove.
In some embodiments of the present application, a first limiting structure is disposed on an inner sidewall of the accommodating groove, and a second limiting structure is disposed on the mounting portion, where the first limiting structure and the second limiting structure cooperate to limit displacement of the microwave shielding case in a circumferential direction of the heating tube.
In some embodiments of the present application, one of the first limit structure and the second limit structure is a protrusion structure, and the other of the first limit structure and the second limit structure is a groove structure or a notch structure.
In some embodiments of the present application, the receiving groove includes a first abutment surface intersecting a longitudinal direction of the heating tube, and the mounting portion abuts against the first abutment surface.
In some embodiments of the present application, the receiving groove includes a second abutment surface along a length direction of the heat generating tube, the second abutment surface intersects the length direction of the heat generating tube, the first abutment surface is located between the second abutment surface and the opening along the length direction of the heat generating tube, and a portion of the body of the connection portion abuts against the second abutment surface.
In some embodiments of the present application, the mounting base further includes a through hole, the through hole is connected to the accommodating groove along the length direction of the heating tube, the heating tube further includes a wiring portion electrically connected to the heating element, and the wiring portion is penetrated out through the through hole and protrudes out of the mounting base.
In some embodiments of the present application, the microwave shielding case includes a transmission region disposed opposite to the heat generating part, the transmission region covering at least a portion of the heat generating part in a length direction or a circumferential direction of the heat generating pipe, the transmission region including at least one through hole, a maximum opening size of any one of the through holes being smaller than a quarter wavelength of microwaves emitted from the microwave cooking appliance.
A second aspect of the application proposes a heating assembly comprising a heating element as described above.
When the heating component is used for the microwave cooker, in the process of heating food in the cooking cavity by utilizing microwaves and the heating pipe of the heating piece, the heat of the heating pipe is radiated into the cooking cavity through the microwave shielding cover so as to heat the food in the cooking cavity, and the microwaves in the cooking cavity cannot reach the position of the heating pipe under the shielding of the microwave shielding cover, so that the problem of ignition of the heating pipe when the heating pipe is used in a microwave environment is reduced, and the safety in the use process is improved.
A third aspect of the present application proposes a microwave cooking appliance comprising a heating assembly according to the above.
According to the microwave cooking utensil provided by the application, in the process of simultaneously heating food in the cooking cavity by utilizing microwaves and the heating pipes in the heating assembly, the heat of the heating pipes is radiated into the cooking cavity through the microwave shielding cover so as to heat the food in the cooking cavity, and the microwaves in the cooking cavity cannot reach the position of the heating pipes under the shielding of the microwave shielding cover, so that the problem of ignition of the heating pipes in the use process of the heating pipes in a microwave environment is reduced, and the safety in the use process is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 schematically illustrates a structural schematic view of a microwave cooking appliance according to an embodiment of the present application;
Fig. 2 schematically shows a schematic structural view of a heating member according to an embodiment of the present application;
FIG. 3 is an exploded view of the heating element shown in FIG. 2;
Fig. 4 is a schematic structural view of the microwave shield shown in fig. 3;
FIG. 5 is a schematic view of the microwave shield shown in FIG. 4 from another perspective;
fig. 6 is a schematic cross-sectional structure of the microwave shield shown in fig. 4;
FIG. 7 is a schematic view of the mounting block shown in FIG. 3;
FIG. 8 is a schematic view of the mount shown in FIG. 7 from another perspective;
fig. 9 is a schematic structural view of the heating tube shown in fig. 3;
fig. 10 is a graph of center temperature versus heating duration for a microwave cooking appliance at different porosities.
The reference numerals are as follows:
100. A microwave cooking appliance;
10. a case;
20. A door body;
30. A heating assembly;
31. A heat shield;
32. A heating member;
321. a heating tube;
3211. the heating part, 3212, the connecting part, 32121, the first limiting part, 3213, the wiring part;
322. A mounting base;
3221. the accommodating groove 3222, the opening 3223, the first abutting surface 3224, the second abutting surface 3225, the second limiting part 3226, the first limiting structure 3227, the penetrating hole 3228 and the communication hole;
323. A microwave shield;
3231. Transmission area 32311, through hole 3232, reflection area 3233, second limit structure 3234, mounting part;
x, length direction of the heating tube.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.
As shown in fig. 1 to 10, according to an embodiment of the present application, a heating member 32 is provided, and the heating member 32 includes a mounting base 322, a microwave shield 323, and a heating tube 321.
The heating tube 321 comprises a heating tube 321 with a heating body, the heating body is a graphite heating body or a carbon fiber heating body, the heating tube 321 is connected with the mounting seat 322, and the microwave shielding cover 323 is matched with the mounting seat 322 and covers the outer side of the heating tube 321.
It is to be understood that the heating element in the heating tube 321 is set to be a graphite heating element or a carbon fiber heating element, so that the heating tube 321 has the advantages of high heating speed, high light intensity, good dominant effect, strong thermal stability and the like. However, the heating tube 321 is in a microwave environment emitted by the microwave cooking device (the frequency of the microwave emitted by the microwave cooking device is generally 2000mhz to 300 mhz), and since the graphite heating element or the carbon fiber heating element contains carbon element, the heating tube 321 can be ignited during operation.
In the present application, the microwave shield 323 refers to a member having a shielding effect on microwaves, that is, when the microwaves arrive on the microwave shield 323, the microwave shield 323 may reflect the microwaves to prevent the microwaves from propagating through the microwave shield 323.
When the heating tube 321 is covered by the microwave shielding cover 323, the heating tube 321 is located inside the microwave shielding cover 323, and when the heating element 32 is located in the microwave environment, the microwave shielding cover 323 separates the heating tube 321 from microwaves, so that the microwaves cannot reach the position of the heating tube 321.
When the heating element 32 is used for the microwave cooking appliance 100, in the process of heating food in a cooking cavity by utilizing microwaves and the heating tube 321, heat of the heating tube 321 is radiated into the cooking cavity through the microwave shielding cover 323 so as to heat the food in the cooking cavity, and the microwaves in the cooking cavity cannot reach the position of the heating tube 321 under the shielding of the microwave shielding cover 323, so that the problem of ignition of the heating tube 321 when the heating tube 321 is used in a microwave environment is reduced, and the safety in the use process is improved.
It is to be noted that, in the present application, the microwave shield 323 may be a metal member or a non-metal member, and when the microwave shield 323 is a metal member, the metal member may be a stainless steel member or the like, and when the microwave shield 323 is a non-metal member, the non-metal member may be a ceramic or the like.
In addition, the shape of the microwave shielding cover 323 can be consistent with the shape of the heating tube 321 or inconsistent with the shape of the heating tube 321, in the application, the shape of the microwave shielding cover 323 is approximately consistent with the shape of the heating tube 321, so that the whole volume of the heating element 32 can be effectively reduced on the basis of covering the heating tube 321 by the microwave shielding cover 323, and the layout and the installation of the heating element 32 in the use process are convenient.
In the present application, the heat generating tube 321 has a columnar structure, and the extending direction of the columnar structure is the longitudinal direction x of the heat generating tube 321, and the heat generating tube 321 has a central axis which is disposed along the longitudinal direction x of the heat generating tube 321, and the direction around the central axis is the circumferential direction of the heat generating tube 321.
In some embodiments of the present application, as shown in fig. 2 and 3, two mounting seats 322 are provided on the heating tube 321, wherein the two mounting seats 322 are spaced apart in the length direction x of the heating tube 321, and the two mounting seats 322 are respectively matched with the microwave shielding cover 323.
In the present application, the heating tube 321 and the mounting base 322 are connected to each other, and when the heating member 32 is used for the microwave cooking appliance 100, the mounting base 322 is fixedly connected to the structural member of the microwave cooking appliance 100, so as to fix the heating member 32.
Specifically, the two mounting seats 322 are respectively mounted on the heating pipe 321 and respectively cooperate with the microwave shielding cover 323, and the two mounting seats 322 are provided, so that on one hand, when the heating element 32 is used on the microwave cooking appliance 100, the connection position of the heating element 32 and the structural member of the microwave cooking appliance 100 can be increased, the connection strength and stability of the heating element 32 can be improved, and on the other hand, the cooperation position of the microwave shielding cover 323 can be increased, so that the strength and stability of the microwave shielding cover 323 can be improved.
It should be noted that, the two mounting seats 322 are disposed at intervals in the length direction x of the heating tube 321, where the connection position of the mounting seats 322 on the heating tube 321 may be an end portion of the heating tube 321 or a body between two end portions.
In some embodiments of the present application, as shown in fig. 2,3 and 9, the heat generating tube 321 includes a connection portion 3212 and a heat generating portion 3211, wherein the heat generating body is disposed inside the heat generating portion 3211, the number of the connection portions 3212 is two, one connection portion 3212 is respectively mounted on each of opposite ends of the heat generating tube 321 along a length direction x of the heat generating tube 321, and one mounting seat 322 is respectively connected to each connection portion 3212.
Specifically, the two connection portions 3212 are respectively connected to two opposite ends of the heating portion 3211 along the length direction x of the heating tube 321, and each connection portion 3212 is fixedly provided with a mounting seat 322, the microwave shielding cover 323 is covered on the outer side of the heating tube 321 and is respectively matched with the two mounting seats 322, at this time, the microwave shielding cover 323 can effectively cover the heating portion 3211 with a heating element, the condition that microwaves are transmitted to the heating element position can be further reduced, and accordingly the ignition problem of the heating element 32 in the microwave environment can be further reduced.
It should be understood that, when the heating element 32 heats, the heating element located inside the heating portion 3211 is energized, and the heating element is a graphite heating element or a carbon fiber heating element, which has a high resistance, and the energized heating element emits light and releases heat, so that heat generated by the heating element can radiate through the microwave shielding cover 323, so as to heat and cook food. Along the length direction x of the heating tube 321, the two connecting portions 3212 are connected to two opposite ends of the heating portion 3211 and are connected to the microwave shield 323 through the mounting base 322, so that shielding between the heating portion 3211 and the microwave shield 323 can be reduced, and the thermal efficiency of the heating element 32 can be improved.
In the application, the heating part 3211 comprises a glass tube, the heating body is arranged in the glass tube, and two ends of the glass tube are respectively connected and fixed with a connecting part 3212, wherein the glass tube is required to be vacuumized so that the heating body can be in an environment similar to vacuum or inert gas is filled in a vacuum tube, thereby reducing oxidation and other reactions of the heating body in the heating process.
The connection portion 3212 may be a metal member (e.g., a stainless steel member) or a non-metal member (e.g., a ceramic member) and may be connected to the glass tube by adhesion, engagement, or the like.
It should be noted that, in the present application, the fitting manner between the microwave shield 323 and the mount 322 includes a plug fitting, a snap fitting, a welding fitting, a fastener connection fitting, an adhesive fitting, or the like.
In some embodiments of the present application, as shown in fig. 2, the mating between the microwave shield 323 and the mount 322 comprises a plug-in mating.
Specifically, the heating tube 321 includes a connection portion 3212 and a heating portion 3211, wherein the heating body is disposed inside the heating portion 3211, the number of the connection portions 3212 is two, one connection portion 3212 is respectively mounted on two ends of the heating tube 321 disposed opposite to each other along a length direction x of the heating tube 321, and one mounting seat 322 is respectively connected to each connection portion 3212.
The microwave shield 323 includes two mounting portions 3234, and the two mounting portions 3234 are provided at opposite ends of the microwave shield 323 along the longitudinal direction x of the heat generating tube 321. When the microwave shield 323 is mated with the mounting base 322, the mating between the mounting base 322 and the mounting portion 3234 of the microwave shield 323 is plug-in.
The mode of the plugging fit between the microwave shielding cover 323 and the mounting seat 322 is simple in structure and convenient to assemble, in addition, the structure of the plugging fit can be overlapped at the plugging position, so that the structural strength of the connecting position can be increased, and the overall structural stability of the heating element 32 is improved.
It should be noted that, in the implementation process, the mounting portion 3234 of the microwave shielding cover 323 may be inserted into the mounting base 322, or a part of the structure of the mounting base 322 may be inserted into the mounting portion 3234.
In some embodiments of the present application, as shown in fig. 7, a receiving groove 3221 is provided in the mounting portion 3234, and the receiving groove 3221 has an opening 3222. When the heating element 32 is assembled, the connection portion 3212 of the heating tube 321 is inserted into the accommodating groove 3221 through the opening 3222 of the accommodating groove 3221, the microwave shielding cover 323 is covered on the outer side of the heating tube 321, and the mounting portion 3234 of the microwave shielding cover 323 is also inserted into the accommodating groove 3221 through the opening 3222 of the accommodating groove 3221, and at this time, the mounting portion 3234 is disposed between the inner side wall of the accommodating groove 3221 and the connection portion 3212.
The connection portion 3212 of the heating tube 321 and the mounting portion 3234 of the microwave shield 323 are inserted into the receiving groove 3221 of the mounting base 322, respectively, and the end of the heating tube 321 and the end of the microwave shield 323 can be protected by the mounting base 322, so that damage to the heating tube 321 and the microwave shield 323 due to external impact can be reduced.
In addition, the heating tube 321 is completely wrapped by the mounting seat 322 and the microwave shielding cover 323, so that the heating tube 321 can be effectively protected, the impact of external factors on the heating tube 321 is reduced, and the possibility that the heating tube 321 is damaged can be reduced.
In the present application, the mount 322 is a heat insulating material, which is a poor conductor of heat, such as ceramic. The mounting seat 322 is set to be a heat insulating material piece, so that heat of the heating piece 32 in the use process can be reduced to be transmitted through the mounting seat 322, and then when the heating piece 32 is applied to the microwave cooking appliance 100, the possibility that the heat of the heating piece 32 is transmitted to other structural components can be reduced, and the condition that the heating piece 32 heats and damages the other structural components of the microwave cooking appliance 100 is reduced.
It should be understood that there are two mounting seats 322, two connecting portions 3212 of the heating tube 321 along the longitudinal direction x of the heating tube 321, and two mounting portions 3234 of the microwave shield 323. When the heating element 32 is assembled, one connecting portion 3212 of the heating tube 321 is inserted into the accommodating groove 3221 of one mounting seat 322, then the microwave shielding cover 323 with a cylindrical structure is sleeved on the outer side of the heating tube 321 (the inner side wall of the microwave shielding cover 323 is arranged at intervals with the outer surface of the heating tube 321), the mounting portion 3234 of the microwave shielding cover 323 is inserted into the accommodating groove 3221 of one mounting seat 322, and then the other mounting seat 322 is sleeved on the other mounting portion 3234 of the heating tube 321 and the other mounting portion 3234 of the microwave shielding cover 323. The connection portion 3212 is fixedly connected to the mounting base 322, and the connection manner includes, but is not limited to, fastening or bonding, the microwave shielding cover 323 is sandwiched between the two mounting bases 322, and the microwave shielding cover 323 and the two mounting bases 322 may be connected (high-temperature glue is filled between them) or may not be connected.
In some embodiments of the present application, as shown in fig. 2, 3, 5 and 7, two mounting seats 322 are provided, each mounting seat 322 is provided with a receiving groove 3221 having an opening 3222, a first limiting structure 3226 is provided on an inner side wall of the receiving groove 3221, two connecting portions 3212 of the heating tube 321 are provided along a length direction x of the heating tube 321, two mounting portions 3234 of the microwave shielding cover 323 are provided, and a second limiting structure 3233 is provided on each mounting portion 3234.
When the heating element 32 is assembled, one connecting portion 3212 of the heating tube 321 is inserted into the accommodating groove 3221 of one mounting seat 322, then the microwave shielding cover 323 with a cylindrical structure is sleeved outside the heating tube 321, so that the mounting portion 3234 of the microwave shielding cover 323 is inserted into the accommodating groove 3221 of one mounting seat 322, the second limiting structure 3233 and the first limiting structure 3226 are matched with each other, then the other mounting seat 322 is sleeved on the other mounting portion 3234 of the heating tube 321 and the other mounting portion 3234 of the microwave shielding cover 323 (the second limiting structure 3233 of the mounting portion 3234 of the microwave shielding cover 323 is matched with the first limiting structure 3226 of the accommodating groove 3221 of the mounting seat 322), finally the connecting portion 3212 and the mounting seat 322 are fixedly connected, and the microwave shielding cover 323 is clamped between the two mounting seats 322.
The first limit structure 3226 and the second limit structure 3233 in the matched state can limit the displacement of the microwave shielding cover 323 along the circumferential direction of the heating tube 321, that is, can limit the rotation of the microwave shielding cover 323 relative to the heating tube 321, so that the installation position of the microwave shielding cover 323 can be effectively maintained, and the condition that the heating efficiency of the heating element 32 is affected due to the rotation of the microwave shielding cover 323 relative to the heating tube 321 is reduced.
It should be noted that, in the present application, the first limiting structure 3226 and the second limiting structure 3233 are concave-convex structures, that is, are embedded with each other, and the limiting function is realized by using the embedded manner.
In some embodiments of the present application, as shown in fig. 2, the microwave shield 323 and the mounting base 322 are mated with each other, wherein the mounting portion 3234 of the microwave shield 323 is plugged into the receiving groove 3221 of the mounting base 322, and the first limiting structure 3226 located on the inner sidewall of the receiving groove 3221 and the second limiting structure 3233 located on the mounting portion 3234 are mated with each other to limit the rotation of the microwave shield 323 relative to the heating tube 321. One of the first limiting structure 3226 and the second limiting structure 3233 is a protruding structure, and the other is a groove structure or a notch structure.
Specifically, when the groove structure or the notch structure is formed on the inner side wall of the mounting groove, the groove structure or the notch structure is provided to communicate with the opening 3222 of the accommodating groove 3221, and when the groove structure or the notch structure is formed on the mounting portion 3234 of the microwave shield 323, the groove structure or the notch structure is provided to communicate with the end portion of the mounting portion 3234. When the projection structure is formed on the inner side wall of the receiving groove 3221, the projection structure is provided to project from the inner side wall of the receiving groove 3221, and when the projection structure is formed on the mounting portion 3234, the projection structure is provided to project from the outer peripheral surface of the projection structure.
Taking the first limiting structure 3226 as a protruding structure and the second limiting structure 3233 as a notch structure as an example, the notch structure is formed on the outer peripheral surface of the mounting portion 3234 of the microwave shielding cover 323 and is communicated with the end portion of the mounting portion 3234, the notch structure extends along the length direction x of the heating tube 321, and the protruding structure is formed on the inner side wall of the accommodating groove 3221 of the mounting seat 322. During assembly, the notch structure and the protrusion structure are aligned, the mounting portion 3234 is inserted into the accommodating groove 3221 from the opening 3222 of the accommodating groove 3221, the protrusion structure slides into the notch structure of the mounting portion 3234 in the inserting process, so that the fitting mounting between the notch structure and the protrusion structure is realized, and when the protrusion structure abuts against the closed end (one end deviating from the through end of the notch structure) of the notch structure, the microwave shielding cover 323 is mounted in place.
In some embodiments of the present application, as shown in fig. 7 and 9, the mounting base 322 is provided with a receiving groove 3221, the receiving groove 3221 has an opening 3222, and the mounting portion 3234 of the microwave shielding cover 323 is inserted into the receiving groove 3221 through the opening 3222. Wherein, a first abutting surface 3223 intersecting with the length direction x of the heating tube 321 is provided in the accommodating groove 3221, after the mounting portion 3234 of the microwave shielding cover 323 is mounted in place in the accommodating groove 3221, the mounting portion 3234 abuts against the first abutting surface 3223, and the mounting portion 3234 is limited by the first abutting surface 3223, so that the displacement of the microwave shielding cover 323 in the length direction x of the heating tube 321 is reduced, and the condition that the heating efficiency of the heating element 32 is affected due to the movement of the microwave shielding cover 323 relative to the heating tube 321 is reduced.
It should be noted that, the accommodating groove 3221 is provided therein with a first protrusion portion, and the first abutting surface 3223 is formed on the first protrusion portion. The first abutting surface 3223 may be parallel to or disposed at an angle with respect to a plane of the opening 3222 of the receiving groove 3221. The side surface of the mounting portion 3234 abutting against the first abutting surface 3223 is adapted to the first abutting surface 3223.
In some embodiments of the present application, as shown in fig. 7 and 9, the mounting base 322 is provided with a receiving groove 3221, the receiving groove 3221 has an opening 3222, and the mounting portion 3234 of the microwave shielding cover 323 is inserted into the receiving groove 3221 through the opening 3222. A first abutting surface 3223 and a second abutting surface 3224 are provided in the accommodating groove 3221 so as to intersect the longitudinal direction x of the heat generating tube 321, and the first abutting surface 3223 is located between the second abutting surface 3224 and the opening 3222 of the accommodating groove 3221.
The heating tube 321 and the microwave shielding cover 323 are inserted into the accommodating groove 3221 through the opening 3222, the mounting portion 3234 of the microwave shielding cover 323 is abutted against the first abutting surface 3223, the connecting portion 3212 of the heating tube 321 is abutted against the second abutting surface 3224, and the mounting portion 3234 and the connecting portion 3212 are limited by the first abutting surface 3223 and the second abutting surface 3224, so that the situation that the microwave shielding cover 323 and the heating tube 321 are displaced in the length direction x of the heating tube 321 is reduced, and the situation that the heating efficiency of the heating element 32 is affected due to the movement of the microwave shielding cover 323 or the heating tube 321 is further reduced.
It should be noted that, the accommodating groove 3221 is provided therein with a second protrusion, and the second abutting surface 3224 is formed on the second protrusion. The second abutting surface 3224 may be parallel to or disposed at an angle with respect to a plane of the opening 3222 of the receiving groove 3221. The side surface of the connecting portion 3212 abutting against the second abutting surface 3224 is matched with the first abutting surface 3223.
In addition, a first limiting portion 32121 is provided on the connection portion 3212 of the heating tube 321, and a second limiting portion 3225 is provided on the second protrusion, wherein the first limiting portion 32121 is a first plane formed on the outer peripheral surface of the connection portion 3212, the first plane is through with an end portion of the connection portion 3212, the second limiting portion 3225 is a second plane formed on the second protrusion, and the second plane is intersected with the second abutting surface 3224. When the connecting portion 3212 is inserted into the accommodating groove 3221, the first plane of the connecting portion 3212 is aligned with the second plane in the accommodating groove 3221, then the connecting portion 3212 is inserted into the accommodating groove 3221 from the opening 3222, after the connecting portion 3212 is inserted into place, a part of the body of the connecting portion 3212 abuts against the second abutting surface 3224, another part of the body of the connecting portion 3212 is accommodated in an accommodating space defined by the second protrusion and the inner wall of the accommodating groove 3221, and the first plane and the second plane are attached to each other. The first plane and the second plane are used for being attached, so that the heating tube 321 can be limited to rotate relative to the mounting seat 322, and the heating efficiency is reduced due to the fact that the heating tube 321 rotates.
In some embodiments of the present application, as shown in fig. 2 and 7 to 9, the heating tube 321 further includes a connection portion 3213, the connection portion 3213 is electrically connected to the heating element, and the connection portion 3213 is disposed through the connection portion 3212 of the heating tube 321. The mount 322 is provided with a through hole 3227, and the through hole 3227 communicates with the inside of the accommodating groove 3221 in the longitudinal direction x of the heating tube 321.
When the heating tube 321 is assembled, the connection portion 3212 of the heating tube 321 is inserted into the accommodating groove 3221 through the opening 3222, the connection portion 3213 protruding from the connection portion 3212 is penetrated out through the accommodating groove 3221 and the penetrating hole 3227, and after the mounting seat 322 and the heating tube 321 are mounted in place, part of the connection portion 3213 protrudes outside the mounting seat 322. By providing the wiring portion 3213, electrical extraction of the heating element is achieved, thereby improving the wiring operation in the use of the heating element 32.
It is to be noted that, in the present application, the wire connecting portion 3213 is a flat metal member, and the shape of the penetrating hole 3227 is adapted to the shape of the wire connecting portion 3213 so as to facilitate the penetration of the wire connecting portion 3213.
In addition, the mounting base 322 is provided with a communication hole 3228, the communication hole 3228 is communicated with the penetrating hole 3227, and the communication hole 3228 and the penetrating hole 3227 are relatively arranged, when the heating tube 321 and the mounting base 322 are installed in place, a fastener such as a screw penetrates through the connecting hole and then is matched with the wiring portion 3213 located in the penetrating hole, so that the wiring portion 3213 and the mounting base 322 are fixed.
In some embodiments of the present application, as shown in fig. 3 to 6, a transmission region 3231 is provided on the microwave shield 323, the transmission region 3231 being provided corresponding to the heat generating portion 3211 of the heat generating tube 321, the transmission region 3231 covering at least part of the heat generating portion 3211 along the longitudinal direction x of the heat generating tube 321, and the transmission region 3231 covering at least part of the heat generating portion 3211 along the circumferential direction of the heat generating tube 321. Wherein, through holes 32311 are formed in the transmission region 3231, the number of through holes 32311 is at least one, and the maximum opening size of the through holes 32311 is smaller than a quarter of Yu Weibo wavelength.
Specifically, the microwave shielding cover 323 is provided outside the heating tube 321, and the heating tube 321 can be microwave shielded by the microwave shielding cover 323, so that the problem of ignition of the heating element can be reduced when the heating element 32 operates in a microwave environment. Wherein, set up the transmission region 3231 that has the through-hole 32311 on microwave shield 323, and set up the trompil size to through-hole 32311 to can reduce the shielding of microwave shield 323 to heating tube 321, so that the heat when heating tube 321 operates releases fast, makes the heating efficiency of heating element 32 obtain effectively promoting.
It should be understood that the maximum opening size of the through hole 32311 is set to be smaller than one quarter wavelength of the microwave, when the microwave reaches the position of the through hole 32311, the microwave cannot pass through the through hole 32311 and reach the position of the heating tube 321, so as to reduce the problem of igniting the heating body of the heating tube 321, and meanwhile, the heat generated during the operation of the heating tube 321 can be directly radiated to the outer side of the microwave shielding cover 323 through the through hole 32311, so that the blocking of the heat released by the heating tube 321 by the microwave shielding cover 323 is reduced.
Note that, in the present application, the transmissive area 3231 may cover all or part of the length of the heat generating tube 321 in the length direction x of the heat generating tube 321, while the transmissive area 3231 may cover all or part of the circumferential surface of the heat generating tube 321 in the circumferential direction of the heat generating tube 321. The larger the transmission area 3231 covers the heating tube 321 in the length direction x of the heating tube 321 or in the circumferential direction of the heating tube 321, the worse the shielding of the heating tube 321 is, so that more heat of the heating tube 321 can be radiated to the outside of the microwave shield 323 through the through hole 32311, so that the heating efficiency of the heating element 32 can be improved.
In the present application, the number of the through holes 32311 may be 1,2, 10, 50, 100, 300, 400, 500, 600, 800, 1000, etc. When the number of through holes 32311 is larger, the shielding of heat of the heating pipe 321 by the microwave shield 323 is smaller, and as the number of through holes 32311 is larger, the heating efficiency of the heating member 32 can be improved.
In some embodiments of the present application, as shown in fig. 3 to 6, at least two through holes 32311 are opened in the transmissive area 3231. Among them, all the through holes 32311 are arranged in a dispersed manner in the transmissive area 3231, and among all the through holes 32311, any two adjacently arranged through holes 32311 have a spacing distance therebetween, which is greater than 0.5mm.
Specifically, the number of the through holes 32311 is set to be at least two, so that the number of the through holes 32311 can be increased, the open area on the microwave shielding cover 323 is increased, the permeability of the microwave shielding cover 323 is improved, shielding to the heating tube 321 can be further reduced on the basis of realizing microwave shielding, and the heating efficiency of the heating element 32 can be further improved.
It is to be understood that the distance between two through holes 32311 disposed adjacently may be 0.5mm, 0.7mm, 0.9mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, etc. Wherein the smaller the spacing distance between two through holes 32311 adjacently disposed, the higher the permeability of the shield can, and the greater the distance between adjacent through holes 32311, the higher the structural strength of the shield can.
In the present application, the microwave shielding cover 323 is a metal piece (for example, a stainless steel piece), the through holes 32311 are formed on the shielding cover by punching, and at this time, the distance between two adjacent through holes 32311 is at least 1mm, so as to meet the requirement of punching processing, and meanwhile, the microwave shielding cover 323 can have a certain structural strength, so that the protection performance of the microwave shielding cover 323 on the heating tube 321 can be improved.
In some embodiments of the present application, as shown in fig. 3 to 6, a plurality of through holes 32311 are opened in the projection area of the microwave shield 323, and a plurality of through holes 32311 are dispersedly disposed in the transmission area 3231. Wherein, the porosity of the transmission area 3231 is m, which is more than or equal to 0.5 and less than or equal to 0.8.
It is to be understood that when the porosity in the transmission region 3231 is less than 0.5, the open area in the transmission region 3231 is small at this time, the heating efficiency for the elevating heater 32 is limited, and when the porosity in the transmission region 3231 is greater than 0.8, the open area in the transmission region 3231 is large at this time, but the structural strength of the microwave shield 323 is deteriorated.
In the application, by setting the porosity of the transmission region 3231, the microwave shielding cover 323 can effectively shield microwaves, and the microwave shielding cover 323 has good structural strength, so that the protection performance of the microwave shielding cover 323 on the heating tube 321 can be improved, and the damage condition of the heating tube 321 caused by impact can be reduced.
In the present application, the area of the transmissive region 3231 is a all, the open area of the single through hole 32311 is a hole, the number of through holes 32311 is n, the porosity of the transmissive region 3231 is B, where b=n×a hole/Aall, taking the transmissive region 3231 as a rectangle and the through hole 32311 as a circular hole as an example, a all =l×m, where L is one side length of the rectangular transmissive region 3231, M is the other side length of the rectangular transmissive region 3231, a hole＝πr2, where r is the radius of the circular through hole 32311.
It should be noted that in the present application, the porosity m may have a value of 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8.
As shown in fig. 10, the horizontal axis represents the time axis, the vertical axis represents the temperature axis, m1 represents 0.8, m2 represents 0.6, m3 represents 0.55, and m4 represents 0.5, and by comparison, the time period for use is shorter as the porosity increases under the condition of heating to the same temperature.
In some embodiments of the present application, as shown in fig. 3 to 6, a plurality of through holes 32311 are formed in the transmission area 3231 of the microwave shielding cover 323, wherein the plurality of through holes 32311 form a plurality of rows of hole groups, each through hole 32311 in each row of hole groups is arranged in a straight line shape, each hole group is arranged along the length direction x of the heating tube, wherein the plurality of rows of hole groups are arranged at intervals along the circumferential direction of the heating tube 321, and two through holes 32311 in two adjacent rows of hole groups are arranged in a staggered manner. Specifically, the plurality of through holes 32311 are arranged into a plurality of rows of hole groups, so that the processing and manufacturing are facilitated, and the processing efficiency can be improved. Meanwhile, two through holes 32311 which are adjacently arranged in two adjacent hole groups are staggered, so that the porosity of the transmission area 3231 can be further improved, and the heating efficiency of the heating element 32 can be further improved.
In some embodiments of the present application, a plurality of through holes 32311 are formed in the transmission area 3231 of the microwave shielding cover 323, where the plurality of through holes 32311 form a plurality of rows of hole groups, each through hole 32311 in each row of hole groups is arranged in a line shape, each hole group is arranged along the circumferential direction of the heating tube, where the plurality of rows of hole groups are arranged at intervals along the length direction x of the heating tube 321, and two through holes 32311 in two adjacent rows of hole groups that are arranged adjacently are arranged in a staggered manner. Specifically, the plurality of through holes 32311 are arranged into a plurality of rows of hole groups, so that the processing and manufacturing are facilitated, and the processing efficiency can be improved. Meanwhile, through holes 32311 in two adjacent hole groups are staggered, so that the porosity of the transmission area 3231 can be further improved, and the heating efficiency of the heating element 32 can be further improved.
In some embodiments of the present application, a transmissive region 3231 and a reflective region 3232 are provided on the microwave shield 323, wherein the transmissive region 3231 is disposed opposite to the reflective region 3232, and opposite sides of the reflective region 3232 are respectively connected to the transmissive region 3231 in a circumferential direction of the heat generating tube 321.
It should be understood that, the side of the reflective area 3232 facing the heating tube 321 is a reflective surface, and the reflective surface has a reflective function, so that when the heat radiation light generated by the heating element irradiates the reflective surface, the reflective surface reflects the radiation light to change the propagation direction of the radiation light. Since the reflective area 3232 is disposed opposite to the transmissive area 3231, the radiation reflected by the reflective surface can radiate out of the microwave shield 323 through the through hole 32311 of the transmissive area 3231.
Specifically, when the heating member 32 is applied to the microwave cooking appliance 100, the side of the microwave shield 323 having the transmission area 3231 communicates with the cooking cavity and is disposed opposite to the heated food. When the heating member 32 is operated, the heating body in the heating tube 321 is energized, the energized heating body emits light and emits heat, and the heat generated by the heating body is rapidly radiated into the cooking cavity through the through hole 32311 of the transmission area 3231 to heat and cook food. By providing the reflection area 3232, the heat released from the heating body at one side of the reflection area 3232 is reflected via one side of the transmission area 3231 of the reflection area 3232, so as to be radiated to the cooking cavity through the through hole 32311 of the transmission area 3231, so that more heat generated by the heating tube 321 is rapidly radiated into the cooking cavity, and the heating efficiency of the heating member 32 is further improved.
It should be noted that a reflective coating (e.g., a silver coating or the like) may be further provided on the reflective surface, and the reflective coating may be used to further enhance the reflective capability of the reflective surface, so as to further enhance the heating efficiency of the heating element 32.
In some embodiments of the present application, as shown in fig. 6, a transmissive region 3231 and a reflective region 3232 are provided on a microwave shield 323, wherein opposite sides of the reflective region 3232 are respectively connected to the transmissive region 3231 in a circumferential direction of a heat generating tube 321, and a central angle formed by the transmissive region 3231 has a value in a range of 100 ° to 300 ° in the circumferential direction of the heat generating tube 321.
Specifically, when the heating member 32 is operated, the heating element in the heating tube 321 is energized, the energized heating element emits light and emits heat, and the heat generated by the heating element is rapidly radiated into the cooking cavity through the through hole 32311 of the transmission area 3231 to heat and cook food. The larger the coverage of the transmission region 3231 in the circumferential direction of the heating tube 321, the worse the heat blocking of the heating tube 321 by the microwave shield 323, i.e., the more heat the heating tube 321 directly radiates to the outside of the microwave shield 323.
When the heating member 32 is used for the microwave cooking appliance 100, the cooking cavity is disposed at one side of the heating member 32, and the transmission area 3231 is disposed in communication with the cooking cavity, so that directional radiation of heat of the heating tube 321 is achieved by controlling the coverage area of the transmission area 3231 in the circumferential direction of the heating tube 321, and further heat loss can be reduced, and heating efficiency of the heating member 32 can be effectively improved.
In the present application, the transmission region 3231 forms a central angle a in the circumferential direction of the heat generating tube 321 (the reflection region 3232 forms a central angle b in the circumferential direction of the heat generating tube 321, b=360° -a), wherein 100+≤a≤300 °. When the heating member 32 is used for the microwave cooking appliance 100, a heat radiation area of the heating member 32 can be increased, and energy consumption can be effectively reduced on the basis of satisfying the increase of heating efficiency.
It should be noted that the value of a may be specifically 100°、110°、120°、130°、140°、150°、160°、170°、180°、181°、182°、183°、184°、185°、187°、190°、200°、210°、230°、240°、250°、260°、270°、280°、290°、300°.
In some embodiments of the present application, the shape of the through-hole 32311 includes, but is not limited to, circular, triangular, elliptical, quadrilateral, pentagonal, or the like. Through the arrangement of the shapes of the through holes 32311, the through holes 32311 can be arranged according to specific application scenes, so that the actual use requirements are met.
It is to be understood that, in the present application, when the number of the through holes 32311 of the transmissive area 3231 is plural, the shapes of the through holes 32311 may be identical, partially identical, or completely different. When the shapes of the through holes 32311 are identical, the processing can be facilitated, so that the processing efficiency can be improved. When the shapes of the through holes 32311 are partially the same or completely different, the porosity of the transmissive region 3231 may be increased by changing the shape of the through hole 32311, thereby improving the permeability of the transmissive region 3231.
In some embodiments of the present application, as shown in fig. 3 to 6, a through hole 32311 is included in the transmission region 3231 of the microwave shield 323, the through hole 32311 is shaped as a circle, and the diameter of the through hole 32311 is d, wherein 3 mm≤d≤8 mm.
Specifically, the through holes 32311 are arranged in a circular shape, which is convenient for processing and manufacturing. In addition, the diameter of the through hole 32311 which is circular is set between 3mm and 8mm, so that the area of an opening can be effectively increased on the basis of meeting the requirement of shielding microwaves, and the porosity of the transmission area 3231 is further improved, and the heating efficiency of the heating piece 32 is further improved.
It should be noted that the value of d may be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm.
In addition, when the number of through holes 32311 is plural, the diameters of the through holes 32311 may be all the same, partially the same, or all different. When the diameters of the through holes 32311 are identical, the processing can be facilitated, so that the processing efficiency can be improved. When the diameter of the through holes 32311 is partially the same or completely different, the porosity of the transmissive region 3231 may be increased by changing the diameter of the through holes 32311, thereby improving the permeability of the transmissive region 3231.
In some embodiments of the present application, the cross section of the microwave shield 323 along the axial direction perpendicular to the heating tube 321 is a ring-shaped structure including, but not limited to, triangle, quadrangle, pentagon, circle, or ellipse.
Specifically, by setting the annular structure, the microwave shielding cover 323 can be set according to specific application scenarios, so as to meet the requirements of actual use.
It is to be understood that the shape of the ring-shaped structure coincides with the sectional shape of the heat generating tube 321 (the section along the axial direction perpendicular to the heat generating tube 321), so that the microwave shield 323 can be better adapted to the heat generating tube 321. For example, the cross-sectional shape of the heat generating tube 321 (cross-section along the direction perpendicular to the axial direction of the heat generating tube 321) is circular, and the annular structure is circular.
In some embodiments of the present application, the heating tube 321 is disposed coaxially with the microwave shield 323. By coaxially arranging the two, the heating tubes 321 and the microwave shielding cover 323 are arranged at equal distances in the direction perpendicular to the longitudinal direction x of the heating tubes 321, and therefore, the situation that the microwave shielding cover 323 is deformed locally to damage the heating tubes 321 can be reduced.
In some embodiments of the application, the wall thickness of the microwave shield 323 is greater than or equal to 1mm. By providing the microwave shield 323, the entire weight can be effectively controlled on the basis that the microwave shield 323 satisfies the shielding of microwaves, and thus the entire weight of the heating element 32 can be effectively controlled.
It should be noted that, as shown in fig. 6, in the present application, the thickness of the microwave shielding cover 323 is d, where d may have a value of 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, or 4mm.
As shown in fig. 1, a second aspect of the present application proposes a heating assembly 30, the heating assembly 30 comprising a heating element 32 as above.
When the heating assembly 30 is used for the microwave cooking appliance 100, in the process of simultaneously heating food in a cooking cavity by utilizing microwaves and the heating pipes 321 of the heating element 32, heat of the heating pipes 321 is radiated into the cooking cavity through the microwave shielding cover 323 so as to heat the food in the cooking cavity, and microwaves in the cooking cavity cannot reach the position of the heating pipes 321 under the shielding of the microwave shielding cover 323, so that the problem of ignition of the heating pipes 321 when the heating pipes are used in a microwave environment is reduced, and the safety in the use process is improved.
It is to be noted that the heating assembly 30 further includes a heat shield 31, the heat shield 31 having an installation space, and the heating member 32 is fitted with the heat shield 31 such that at least a portion of the heating tube 321 having a heating element is disposed in the installation space. When the heating assembly 30 is used for the microwave cooking appliance 100, the heat shield 31 is mounted and fixed on the cabinet 10 of the microwave cooking appliance 100, and the open end of the heat shield 31 communicates with the cooking cavity in the cabinet 10 to heat and cook food in the cooking cavity by energizing the heating tube 321.
As shown in fig. 1, a third aspect of the present application proposes a microwave cooking appliance 100, the microwave cooking appliance 100 comprising a heating assembly 30 according to the above.
According to the microwave cooking appliance 100 of the present application, in the process of simultaneously heating food in a cooking cavity by using microwaves and the heating pipes 321 in the heating assembly 30, heat of the heating pipes 321 is radiated into the cooking cavity through the microwave shielding cover 323 to heat the food in the cooking cavity, and microwaves in the cooking cavity cannot reach the position of the heating pipes 321 under the shielding of the microwave shielding cover 323, so that the problem of ignition of the heating pipes 321 when in use in a microwave environment is reduced, and safety in use is improved.
It should be noted that, as shown in fig. 1, the microwave cooking apparatus 100 further includes a case 10 and a door 20, wherein a cooking cavity is provided on the case 10, the cooking cavity has a taking and placing opening, the door 20 is pivotally connected to the case 10, and the door 20 is pivoted relative to the case 10 to realize opening or closing of the taking and placing opening.
In the present application, the microwave cooking device may be a microwave oven or a micro-steaming and baking integrated machine, and for convenience of description, the present application is exemplified by only taking the microwave cooking device as a microwave oven, and the structure of other parts of the microwave oven is referred to the prior art, and the description of the present application is omitted herein.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (13)
1. A heating element for a microwave cooking appliance, the heating element comprising:
the heating tube comprises a heating body, and the heating body is a carbon fiber heating body or a graphite heating body;
the mounting seat is connected with the heating tube;
the microwave shielding cover is arranged on the outer side of the heating tube and matched with the mounting seat.
2. The heating element of claim 1, wherein the number of said mounting seats is two, said two mounting seats are spaced apart along the length of said heat generating tube, and said microwave shield is respectively engaged with said two mounting seats.
3. The heating element according to claim 2, wherein the heating tube further comprises a heating portion and two connecting portions, the two connecting portions are respectively connected to opposite ends of the heating portion along a length direction of the heating tube, each connecting portion is connected to one of the mounting seats, and the heating element is disposed inside the heating portion.
4. A heating element according to claim 3, wherein the microwave shield includes two oppositely disposed mounting portions along the length of the heat generating tube, the mounting portions being in mating engagement with the mounting base.
5. The heating element of claim 4, wherein the mounting base includes a receiving slot having an opening, the connecting portion is inserted and fixed in the receiving slot, and the mounting portion is inserted in the receiving slot and located between the connecting portion and an inner side wall of the receiving slot.
6. The heating element according to claim 5, wherein a first limit structure is provided on an inner side wall of the accommodating groove, a second limit structure is provided on the mounting portion, and the first limit structure cooperates with the second limit structure to limit displacement of the microwave shield in a circumferential direction of the heating tube.
7. The heating element of claim 6, wherein one of the first and second spacing structures is a raised structure and the other of the first and second spacing structures is a recessed or notched structure.
8. The heating element of claim 5, wherein the receiving groove includes a first abutment surface intersecting a longitudinal direction of the heating tube, and the mounting portion abuts the first abutment surface.
9. The heating element of claim 8, wherein the receiving groove includes a second abutment surface along a length of the heat generating tube, the second abutment surface intersecting the length of the heat generating tube, the first abutment surface being located between the second abutment surface and the opening along the length of the heat generating tube, a portion of the body of the connecting portion abutting the second abutment surface.
10. The heating element of claim 9, wherein the mounting base further comprises a through hole, the through hole is communicated with the accommodating groove along the length direction of the heating tube, the heating tube further comprises a wiring part electrically connected with the heating element, and the wiring part is penetrated out through the through hole and protrudes out of the mounting base.
11. A heating element according to any one of claims 1 to 10, wherein the microwave shield comprises a transmissive region disposed opposite the heat generating portion, the transmissive region covering at least part of the heat generating portion in a longitudinal or circumferential direction of the heat generating tube, the transmissive region comprising at least one through hole, the largest opening size of any one of the through holes being smaller than a quarter wavelength of microwaves emitted by the microwave cooking appliance.
12. A heating assembly, characterized in that it comprises a heating element according to any one of claims 1 to 11.
13. A microwave cooking appliance characterized in that it comprises a heating assembly according to claim 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311794859.XA CN120201603A (en) | 2023-12-22 | 2023-12-22 | Heating element, heating component and microwave cooking appliance |
| PCT/CN2024/086837 WO2025129857A1 (en) | 2023-12-22 | 2024-04-09 | Heating element, heating assembly and microwave cooking appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311794859.XA CN120201603A (en) | 2023-12-22 | 2023-12-22 | Heating element, heating component and microwave cooking appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120201603A true CN120201603A (en) | 2025-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311794859.XA Pending CN120201603A (en) | 2023-12-22 | 2023-12-22 | Heating element, heating component and microwave cooking appliance |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN120201603A (en) |
| WO (1) | WO2025129857A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100288933B1 (en) * | 1998-11-23 | 2001-05-02 | 구자홍 | Heater cover of microwave oven using conventional heater |
| CN102487554A (en) * | 2010-12-01 | 2012-06-06 | 乐金电子(天津)电器有限公司 | Grilling pipe and microwave oven utilizing same |
| KR102084043B1 (en) * | 2013-09-27 | 2020-03-04 | 엘지전자 주식회사 | Cooking appliance |
| KR20240171098A (en) * | 2022-03-08 | 2024-12-06 | 레볼루션 쿠킹, 엘엘씨 | Microwave oven with radiant energy heating element |
| CN118042662A (en) * | 2022-11-07 | 2024-05-14 | 广东美的厨房电器制造有限公司 | Cooking device |
| CN117715260A (en) * | 2023-12-22 | 2024-03-15 | 广东美的厨房电器制造有限公司 | Heating elements, heating components and microwave cooking appliances |
-
2023
- 2023-12-22 CN CN202311794859.XA patent/CN120201603A/en active Pending
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- 2024-04-09 WO PCT/CN2024/086837 patent/WO2025129857A1/en active Pending
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| WO2025129857A1 (en) | 2025-06-26 |
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