CN212867974U - Fan assembly and cooking device - Google Patents
Fan assembly and cooking device Download PDFInfo
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- CN212867974U CN212867974U CN202021342973.0U CN202021342973U CN212867974U CN 212867974 U CN212867974 U CN 212867974U CN 202021342973 U CN202021342973 U CN 202021342973U CN 212867974 U CN212867974 U CN 212867974U
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Abstract
The utility model belongs to the technical field of kitchen equipment, concretely relates to fan assembly and culinary art device. The utility model discloses a fan assembly includes flabellum support, motor support, flabellum and electrical unit, and motor support links to each other or is the partly of flabellum support with the flabellum support, and the flabellum includes wheel hub, and wheel hub locates motor support's tip with rotatable mode, and electrical unit includes stator, rotor and circuit board, and the circuit board is connected with the stator electricity, and the stator links to each other with motor support, and the rotor links to each other with wheel hub and locates the outside of stator with rotatable mode cover. According to the fan assembly in this application, can dispel the heat to cooking device's inside effectively, the rotor is stable at the driven action speed down of stator simultaneously, is difficult for undulant, reduces or avoids the production of noise to improve user experience and feel.
Description
Technical Field
The utility model belongs to the technical field of kitchen equipment, concretely relates to fan assembly and culinary art device.
Background
The fan assembly is a core component of a microwave oven and is used for radiating heat of a magnetron, a transformer (frequency converter) or other electronic components. The fan assembly is composed of a motor, a support and fan blades, the motor is fixed on the support through screws, the fan blades are fixedly connected with a motor shaft through a shaft hole in the center of the hub, and the whole fan assembly is assembled on a back plate of the microwave oven through the support.
The motor of the existing microwave oven radiating fan is generally a shaded pole motor, although the basic radiating requirement can be met, the rotating speed stability of the shaded pole motor is poor, and the rotating speed of a single motor after fan blades are assembled can fluctuate between the rated rotating speed +/-200 RPM. In addition, different microwave oven platforms and different heat dissipation flow channel resistances are adopted, the microwave oven is in different use environments, the backpressure at the air inlet mesh is different, the actual load of the shaded pole motor can be influenced, and the fluctuation of the motor rotating speed is further increased. Therefore, in order to meet the heat dissipation requirement of the microwave oven even when the motor is at the minimum rotating speed, a margin is required to be left for the rated rotating speed of the motor. But simultaneously, the higher the rotating speed of the motor, the higher the noise is, thereby seriously influencing the use experience of consumers.
Disclosure of Invention
The utility model aims at solving the problem that the motor speed is large in fluctuation in the fan assembly at least. This object is achieved by:
a first aspect of the present invention provides a fan assembly, the fan assembly includes:
a fan blade support;
the motor bracket is connected with the fan blade bracket or is part of the fan blade bracket;
the fan blade comprises a hub, and the hub is rotatably arranged at the end part of the motor bracket;
the motor unit comprises a stator, a rotor and a circuit board, wherein the circuit board is electrically connected with the stator, the stator is connected with the motor support, and the rotor is connected with the hub and is sleeved outside the stator in a rotatable mode.
According to the fan assembly in this application, stator through with electrical unit connects on motor support, connect electrical unit's rotor on the wheel hub of flabellum and locate the outside of stator with rotatable mode cover, the circuit board is connected with the stator electricity and is used for controlling the direction change in the magnetic field that the stator produced, the rotor takes place to rotate under the effect of magnetic field, and drive the flabellum and rotate jointly, produce the cooling air in the flabellum pivoted, thereby dispel the heat to cooking device's inside, the rotor is fast stable under the drive action of stator simultaneously, be difficult for undulant, reduce or avoid the production of noise, thereby improve user experience and feel.
In addition, according to the utility model discloses a fan assembly still can have following additional technical characterstic:
in some embodiments of the present invention, the motor bracket includes:
the bracket body is detachably connected with the fan blade bracket;
and the extension end is arranged on the end face, facing the fan blades, of the support body, and the stator is sleeved on the extension end.
In some embodiments of the invention, the circuit board is disposed between the stator and the bracket body.
In some embodiments of the present invention, the motor bracket includes:
the fan blade support comprises a protruding end, wherein the protruding end is a part of the fan blade support, and the part of the fan blade support extends towards the direction of the fan blade.
In some embodiments of the present invention, the rotor is a magnetic ring, the magnetic ring is inserted into the hub, and the outer wall surface of the magnetic ring is tightly attached to the inner wall surface of the hub.
In some embodiments of the present invention, the stator is an iron core sleeved with a plurality of coils, and the plurality of coils are electrically connected to the circuit board.
In some embodiments of the present invention, the fan assembly further comprises:
the motor support is provided with a mounting hole in the axial direction, and the rotating shaft is rotatably arranged in the mounting hole and connected with the hub.
In some embodiments of the present invention, the fan assembly further comprises:
the filtering plate support is fixedly connected with the fan blade support and is arranged opposite to the air outlet direction of the fan blades.
In some embodiments of the present invention, the fan blade includes a plurality of blades, and the projection of the area enclosed by the plurality of blades is larger than the projection of the area enclosed by the motor bracket.
Another aspect of the present invention also provides a cooking apparatus having any one of the above fan assemblies.
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 invention. Also, like parts are designated by like reference numerals throughout the drawings. Wherein:
fig. 1 is a schematic partial structural view of a fan assembly according to an embodiment of the present invention.
The reference numerals in the drawings denote the following:
100: a fan assembly;
10: a fan blade support;
20: motor support, 21: support body, 22: protruding end, 221: mounting hole, 23: a fixed end;
30: fan blade, 31: hub, 32: a blade;
40: motor unit, 41: iron core, 42: a magnetic ring;
50: rotating shaft, 51: a bearing;
60: filter plate support, 61: supporting seat, 62: and (5) buckling.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention 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 invention 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" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "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 specifically identified as an order of performance. It should also be understood 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 convenience 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 … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The utility model provides a cooking device for food heating, including but not limited to microwave oven or oven. The cooking apparatus includes various electrical components and a fan assembly 100 for dissipating heat, and the electrical components can generate a certain amount of heat during operation, so that the fan assembly 100 is required to dissipate heat from the inside of the cooking apparatus. As shown in fig. 1, the fan assembly 100 of the present embodiment includes a fan blade support 10, a motor support 20, a fan blade 30, and a motor unit 40, wherein the motor support 20 is detachably connected to the fan blade support 10, the fan blade 30 includes a hub 31, the hub 31 is rotatably disposed at an end of the motor support 20, the motor unit 40 includes a stator, a rotor, and a circuit board (not shown in the figure), the circuit board is electrically connected to the stator, the stator is connected to the motor support 20, and the rotor is connected to the hub 31 and rotatably sleeved outside the stator. The stator in this embodiment is an iron core 41 sleeved with a plurality of coils, the plurality of coils are respectively connected with a circuit board in an electrified manner, the rotor is a magnetic ring 42, and the circuit board is a single chip microcomputer.
According to fan assembly 100 in this application, connect on motor support 20 through the iron core 41 with motor unit 40, connect motor unit 40's magnetic ring 42 on flabellum 30 and locate the outside of iron core 41 with rotatable mode cover, the circuit board is connected with the coil electricity and is used for the change in the magnetic field that the control coil produced, magnetic ring 42 takes place to rotate under the effect of magnetic field power, and drive flabellum 30 and rotate jointly, flabellum 30 pivoted while produces the cooling air, thereby dispel the heat to cooking device's inside, magnetic ring 42 is fast stable under iron core 41's drive effect simultaneously, be difficult for undulant, reduce or avoid the production of noise, thereby improve user experience and feel. In the present embodiment, the energization of each coil is controlled by the single chip microcomputer according to the position of the magnetic ring 42, so that the coil generates a changing magnetic field, and the energized coil is subjected to the lorentz force and moves relatively under the action of the magnetic field of the magnetic ring 42. Because the iron core 41 where the coil is located is fixed on the motor bracket 20 and the fan blade 30 where the magnetic ring 42 is located can rotate, the magnetic ring 42 drives the fan blade 30 to rotate around the axial direction thereof under the action of the magnetic field force, and cooling air flow is formed. To produce the same heat dissipation effect, 2600RPM and 58dB sound power level are required for the shaded pole motor, while 2300RPM and 55dB sound power level are required for the fan assembly in this embodiment.
The motor bracket 20 in the present embodiment includes a bracket body 21, a protruding end 22, and a fixed end 23. Support body 21 is disc structure, and its periphery encircles and is equipped with a plurality of bulges and sets up stiff end 23, is equipped with a plurality of bolt holes that correspond the setting on stiff end 23 and the flabellum support 10 respectively, passes the bolt hole on stiff end 23 and the flabellum support 10 in proper order through the bolt and accomplishes the connection of motor support 20 and flabellum support 10 and fix. The center of the disc-shaped structure of the bracket body 21 is provided with an extending end 22 extending towards the fan blade 30, and the iron core 41 is sleeved on the outer peripheral surface of the extending end 22 and is fixed on the motor bracket 20. Specifically, the iron core 41 is connected to the protruding end 22 by clamping or gluing. In this embodiment, in order to facilitate the overall detachment of the motor unit 40 for maintenance and replacement, the motor bracket 20 and the blade bracket 10 are detachably connected, in other embodiments of the present disclosure, in order to reduce the vibration at the connection between the motor bracket 20 and the blade bracket 10, the motor bracket 20 may be a part of the blade bracket 10, and the protruding end 22 may be formed by extending the end surface of a part of the blade bracket 10 toward the direction of the blade 30, and may also be used to fix the iron core 41 of the motor unit 40.
In this embodiment, the protruding end 22 includes a front section and a rear section having different radial dimensions, the radial dimension of the front section is smaller than that of the rear section, and the iron core 41 is sleeved on the front section of the protruding end 22 and positions the insertion depth of the iron core 41 through the rear section. The circuit board is sleeved on the rear section of the protruding end 22 so as to be arranged between the iron core 42 and the bracket body 21.
The fan blade 30 in this embodiment includes a hub 31 and a plurality of fan blades 32 annularly disposed on the outer peripheral surface of the hub 31, the magnetic ring 42 is inserted into the hub 31, and the outer wall surface of the magnetic ring 42 is closely attached to the inner wall surface of the hub 31. The specific connection mode can be clamping connection or adhesive connection. When the circuit board is powered on, the magnetic ring 42 rotates under the action of the magnetic field of the power-on coil, so as to drive the hub 31 to rotate, and the fan blades 32 on the hub 31 rotate together with the hub 31 and generate cooling air flow for dissipating heat inside the cooking device. Because the magnetic ring 42 and the iron core 41 of the motor unit 40 are inserted into the space formed by the hub 31 in the embodiment, the shielding of the motor unit 40 on the cooling airflow formed when the fan blades 30 rotate is reduced, the effective diffusion of the cooling airflow is ensured, and further the heat dissipation is performed on the internal components of the cooking device. Further, in the present embodiment, a projection of an area enclosed by the plurality of blades 32 is larger than a projection of an area enclosed by the motor bracket 20, so as to reduce or avoid the motor bracket 20 blocking the airflow when the fan blades 30 rotate.
In the present embodiment, a rotating shaft 50 is further provided along the axial direction of the hub 31. The motor bracket 20 is provided with a mounting hole 221 arranged along the axial direction inside, and the rotating shaft 50 is inserted into the mounting hole 221 and fixed by a bearing 51, so that the rotating shaft 50 can rotate around the axis direction thereof. The end of the rotating shaft 50 is connected to the hub 31 to drive the hub 31 to rotate together. The rotating shaft 50 may be detachably connected to the hub 31, or may be a part of the hub 31, and extends from an inner end surface of the hub 31 toward the motor bracket 20.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A fan assembly, comprising:
a fan blade support;
the motor bracket is connected with the fan blade bracket or is part of the fan blade bracket;
the fan blade comprises a hub, and the hub is rotatably arranged at the end part of the motor bracket;
the motor unit comprises a stator, a rotor and a circuit board, wherein the circuit board is electrically connected with the stator, the stator is connected with the motor support, and the rotor is connected with the hub and is sleeved outside the stator in a rotatable mode.
2. The fan assembly of claim 1, wherein the motor bracket comprises:
the bracket body is detachably connected with the fan blade bracket;
and the extension end is arranged on the end face, facing the fan blades, of the support body, and the stator is sleeved on the extension end.
3. The fan assembly of claim 2 wherein said circuit board is disposed between said stator and said bracket body.
4. The fan assembly of claim 1, wherein the motor bracket comprises:
the fan blade support comprises a protruding end, wherein the protruding end is a part of the fan blade support, and the part of the fan blade support extends towards the direction of the fan blade.
5. The fan assembly as claimed in claim 1, wherein the rotor is a magnetic ring, the magnetic ring is inserted into the hub, and an outer wall surface of the magnetic ring is tightly attached to an inner wall surface of the hub.
6. The fan assembly of claim 1, wherein the stator is a core sleeved with a plurality of coils, and the plurality of coils are respectively electrically connected to the circuit board.
7. The fan assembly of claim 1, further comprising:
the motor support is provided with a mounting hole in the axial direction, and the rotating shaft is rotatably arranged in the mounting hole and connected with the hub.
8. The fan assembly of claim 1, further comprising:
the filtering plate support is fixedly connected with the fan blade support and is arranged opposite to the air outlet direction of the fan blades.
9. The fan assembly of claim 1 wherein said fan blade comprises a plurality of blades, said plurality of blades defining a larger projection of area than said motor mount.
10. A cooking device, characterized by a fan assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021342973.0U CN212867974U (en) | 2020-07-09 | 2020-07-09 | Fan assembly and cooking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021342973.0U CN212867974U (en) | 2020-07-09 | 2020-07-09 | Fan assembly and cooking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212867974U true CN212867974U (en) | 2021-04-02 |
Family
ID=75213972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021342973.0U Active CN212867974U (en) | 2020-07-09 | 2020-07-09 | Fan assembly and cooking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212867974U (en) |
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2020
- 2020-07-09 CN CN202021342973.0U patent/CN212867974U/en active Active
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