CN213744135U

CN213744135U - Fan, combined fan and cooking utensil

Info

Publication number: CN213744135U
Application number: CN202021952501.7U
Authority: CN
Inventors: 赵涛; 林健
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-07-20
Anticipated expiration: 2030-09-08

Abstract

The utility model belongs to the technical field of kitchen appliance, concretely relates to fan, combination fan and cooking utensil, this fan include stator module, rotor subassembly and flabellum, and the rotor subassembly sets up in stator module, and the flabellum setting is in the rotor subassembly, and flabellum and rotor subassembly separable connection. According to the utility model discloses fan, outside-in is stator module, rotor subassembly and flabellum in proper order, through rotor subassembly and stator module's cooperation, realizes the rotation of flabellum, and prior art compares, has reduced the size of fan, the dismouting of being convenient for. The fan blade and the rotor assembly are detachably connected, the fan blade and the rotor assembly are separately processed and then assembled, and the processing difficulty is reduced. When the fan blades are damaged, only the defective fan blades need to be replaced, the whole fan does not need to be detached, the replacement difficulty is reduced, and the cost is also reduced.

Description

Fan, combined fan and cooking utensil

Technical Field

The utility model belongs to the technical field of kitchen appliance, concretely relates to fan, combination fan and cooking utensil.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

At present, microwave ovens are widely used in people's lives as food heating appliances. The axial fan assembly is mainly used for radiating the components such as the transformer, the magnetron and the like in the microwave oven. The axial flow fan assembly mainly comprises fan blades, a current collector, a fan bracket and a motor.

The axial flow fan in the microwave oven is in interference fit with a motor shaft through a shaft hole, and the alternating current motor drives the fan to rotate so as to radiate heat of all electric parts in the oven. Interference fit mainly adopts D style of calligraphy connected mode, along with time and fan periodic oscillation, the fan shaft hole can be more and more unstable with being connected of motor shaft, influences the radiating effect and the noise increase of fan. On the other hand, the assembly sequence of the fan assembly is that the motor is close to the outer plate, then the current collector is arranged, and finally the fan is arranged, the fan is very close to the magnetron, the fire rating of the fan needs to be increased under partial conditions, the cost is increased, the required disassembling force is large when the fan is disassembled and assembled, and the fan is scalded or scratched by the magnetron due to inertia.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the long-time used back fan and the not hard up radiating effect who leads to of motor junction is poor and the noise increases among the prior art at least. The purpose is realized by the following technical scheme:

a first aspect of the present invention provides a fan for a cooking appliance, comprising:

a stator assembly;

a rotor assembly disposed within the stator assembly;

a plurality of fan blades disposed within the rotor assembly, and the fan blades are detachably connected with the rotor assembly.

According to the utility model discloses fan, outside-in is stator module, rotor subassembly and flabellum in proper order, and through rotor subassembly and stator module's cooperation, realizes the rotation of flabellum, and prior art compares has reduced the size of fan, and the dismouting of being convenient for has cancelled the setting of interference connection, avoids appearing the not hard up problem that leads to of radiating effect is poor and the noise increases of long-time back fan and motor junction. The fan blade and the rotor assembly are detachably connected, the fan blade and the rotor assembly are separately processed and then assembled, and the processing difficulty is reduced. When the fan blades are damaged, only the defective fan blades need to be replaced, the whole fan does not need to be detached, the replacement difficulty is reduced, and the cost is also reduced.

In some embodiments of the present invention, the rotor assembly is provided with a fixing portion, the fan blade is provided with a fitting portion, and the fan blade passes through the fitting portion to be connected to the fixing portion.

In some embodiments of the present invention, the stator assembly comprises:

a stator having a circular ring shape;

and the coils are uniformly connected to the inner wall of the stator at intervals.

In some embodiments of the present invention, a groove is provided in the stator, and the coil is connected in the groove.

In some embodiments of the present invention, the rotor assembly comprises:

the rotor is annular, and the fixing part is arranged on the rotor;

and the magnetic poles are uniformly connected to the outer wall of the rotor at intervals.

In some embodiments of the invention, the width of the rotor is less than the width of the groove.

In some embodiments of the present invention, each of the fan blades includes a first end and a second end, the first end is connected to the inner wall of the rotor, and the second end forms the air outlet.

A second aspect of the present invention provides a combination fan for a cooking appliance, comprising:

a first fan;

the second fan and the first fan are arranged along the direction of a rotating shaft, the first fan and the second fan are fans in any technical scheme, and the rotating directions of the first fan and the second fan are the same or opposite.

According to the utility model discloses cooking utensil has the same advantage with above-mentioned fan, no longer gives unnecessary details here. In addition, the stator assembly of the first fan and the stator assembly of the second fan are arranged along the rotating shaft direction of the first fan and the rotating shaft direction of the second fan, the first fan and the second fan are connected in series, the rotating speed and the rotating direction of the first fan and the second fan are controlled, the adjustment of the wind speed can be realized, and the heat dissipation of different grades is realized according to the temperature of the cooking utensil.

In some embodiments of the present invention, the combination fan further comprises:

a first controller electrically connected to the coil of the first fan, the first controller configured to control a rotational speed of the first fan;

a second controller electrically connected to the coil of the second fan, the second controller configured to control a rotational speed of the second fan.

A third aspect of the present invention provides a cooking appliance, comprising:

the heating device comprises a box body, a heating box and a heating device, wherein a heating cavity is formed in the box body;

the magnetron is connected to the box body and used for providing microwaves to the heating cavity;

the heat dissipation part is connected to the box body and used for dissipating heat of the magnetron and is a fan or a combined fan in any one of the technical schemes.

According to the utility model discloses cooking utensil has the same advantage with above-mentioned fan or combination fan, no longer explains here.

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 reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic perspective view of a fan according to an embodiment of the present invention;

FIG. 2 is an exploded view of the fan shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic perspective view of a combined fan according to an embodiment of the present invention.

The reference symbols in the drawings denote the following:

1. a stator assembly; 11. a stator; 12. a coil; 111. a groove;

2. a rotor assembly; 21. a rotor; 22. a magnetic pole; 23. a fixed part;

3. a fan blade; 31. a fitting portion; 32. a first end; 33. a second end; 34. an air outlet area;

4. a first fan;

5. a second fan.

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" 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.

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 cooking utensil is a microwave oven and comprises a box body, a transformer, a magnetron and a fan, wherein the transformer and the magnetron are connected to the box body, the fan, the transformer and the magnetron are located in the same cavity, and the fan rotates to dissipate heat of the magnetron and the transformer.

As shown in fig. 1, a fan according to an embodiment of the present invention is used for a cooking appliance, including:

a stator assembly 1;

the rotor assembly 2, the rotor assembly 2 is set up in the stator assembly 1;

a plurality of fan blades 3, the fan blades 3 are disposed in the rotor assembly 2, and the fan blades 3 are detachably connected with the rotor assembly 2.

According to the utility model discloses the fan, with motor and fan integration, reduced the spare part quantity of fan, simplified the structure. The fan outside-in is stator module 1, rotor subassembly 2 and flabellum 3 in proper order, and through rotor subassembly 2 and stator module 1's cooperation, realizes flabellum 3's rotation, and prior art compares has reduced the size of fan, and the dismouting of being convenient for has cancelled the setting of interference connection, avoids appearing the problem that the radiating effect that long-time back fan and motor junction become flexible and lead to is poor and the noise increases. Fan blade 3 and rotor subassembly 2 are separable to be connected, separately process fan blade 3 and rotor subassembly 2, assemble again, have reduced the processing degree of difficulty. When the fan blade 3 is damaged, only the defective fan blade 3 needs to be replaced, the whole fan does not need to be detached, the replacement difficulty is reduced, and the cost is also reduced.

In some embodiments of the present invention, as shown in fig. 1 to 3, the rotor assembly 2 is provided with a fixing portion 23, the fan blade 3 is provided with a matching portion 31, and the fan blade 3 is connected to the fixing portion 23 through the matching portion 31. The fixing portion 23 may be a through hole, a groove, or a protrusion. When the matching portion 31 is connected to the through hole, the matching portion 31 may be a connecting shaft or a connecting plate, and is connected by plugging or bolts. When the matching part 31 is connected with the groove, the matching part 31 can be a protrusion, interference connection is adopted, and a positioning pin or a positioning bolt can be additionally arranged, so that the fixing reliability is improved. When the matching part 31 is connected with the protrusion, the matching part 31 can be a groove, and a positioning pin or a positioning bolt can be additionally arranged, so that the fixing reliability is improved. In one embodiment, the fixing portion 23 is a groove, the matching portion 31 is a protrusion, and the fixing portion 23 is in interference connection with the matching portion 31.

In some embodiments of the present invention, as shown in fig. 2 to 3, the stator assembly 1 includes a stator 11 and coils 12, the stator 11 is in a circular ring shape, and the coils 12 are uniformly connected to the inner wall of the stator 11 at intervals. Stator 11 defines the maximum dimension of the fan in the radial direction, and alternating current is supplied to coil 12 to generate a magnetic field, which drives rotor assembly 2 to rotate, thereby realizing the rotation of fan blades 3. The adjustment of the rotation speed of the fan blade 3 can be realized by adjusting the phase of the current, the voltage and the voltage which are led into the coil 12. After installing the fan in cooking utensil, can set up temperature sensor, through the temperature in the temperature sensor detection cooking utensil, the rotational speed of fan uses temperature sensor's feedback information as the reference, realizes the matching of heat-sinking capability and demand.

The utility model discloses an in some embodiments, in certain space, in order to improve the radiating effect, reduce stator module 1 and rotor subassembly 2's volume, increase flabellum 3's volume. Therefore, as shown in fig. 2 to 3, a groove 111 is provided in the stator 11, and the coil 12 is connected in the groove 111. The coil 12, which does not take up additional space, is arranged inside the stator 11.

In some embodiments of the present invention, as shown in fig. 2 to 3, the rotor assembly 2 includes a rotor 21 and magnetic poles 22, the rotor 21 is in a circular ring shape, the magnetic poles 22 are uniformly connected to the outer wall of the rotor 21 at intervals, and the fixing portion 23 is disposed on the rotor 21. Stator 11 and rotor 21 all are the ring form, and rotor 21 sets up in the inside of stator 11, and stator 11 has injectd the fan at the ascending maximum dimension of circumferential direction, compares in prior art 100 mm's axial dimensions, has shortened 35mm, and after cooking utensil was installed to the fan, with the increase of distance between the magnetron, can avoid taking place to interfere between the magnetron when carrying out the fan dismouting, and the fire rating of fan can reduce, and then the cost is reduced.

In some embodiments of the present invention, as shown in fig. 2 to 3, the width of the rotor 21 may be the same as the width of the stator 11, in order to avoid the rotor assembly 2 from being disengaged from the stator assembly 1 during the moving process of the cooking appliance, the movement of the rotor assembly 2 in the axial direction may be limited by providing a limiting member in the cooking appliance. In one embodiment, to increase the stability of fan blades 3 during rotation, rotor 21 is disposed in groove 111 to prevent rotor 21 from falling out, and therefore, the width of rotor 21 needs to be smaller than the width of groove 111.

In some embodiments of the present invention, as shown in fig. 2 to 3, each fan blade 3 includes a first end 32 and a second end 33, the first end 32 is one end of the fan blade 3 detachably connected to the rotor 21, the second end 33 is the end opposite to the first end 32, and the second end 33 is a free end. In the fan of the present application, there is no structure of the rotating shaft, and under the driving of stator assembly 1, fan blades 3 rotate together with rotor 21, and the airflow flows out from air outlet area 34 formed by the plurality of second ends 33, so as to dissipate heat of the components of the cooking appliance.

In some embodiments of the present invention, as shown in fig. 2-3, the cross-sectional area of fan blade 3 decreases in a direction from first end 32 to second end 33. That is, the cross-sectional area at the junction of fan blade 3 and rotor 21 is maximized, which can increase the strength of the connection between fan blade 3 and rotor 21.

As shown in fig. 4, a combination fan according to another embodiment of the present invention is used for a cooking appliance, including:

a first fan 4;

the second fan 5, the second fan 5 and the first fan 4 are arranged along the direction of the rotating shaft, the first fan 4 and the second fan 5 are provided with the fans according to any of the above embodiments, and the rotating directions of the first fan 4 and the second fan 5 are the same or opposite.

According to the utility model discloses cooking utensil has the same advantage with above-mentioned fan, no longer gives unnecessary details here. In addition, the stator assembly 1 of the first fan 4 and the stator assembly 1 of the second fan 5 are arranged along the rotating shaft direction of the first fan 4 and the rotating shaft direction of the second fan 5, the first fan 4 and the second fan 5 are connected in series, the rotating speed and the rotating direction of the first fan 4 and the second fan 5 are controlled, the adjustment of the wind speed can be realized, and the heat dissipation of different grades can be realized according to the temperature of the cooking appliance.

In some embodiments of the present invention, the combination fan further includes a first temperature sensor and a second temperature sensor, the first temperature sensor is disposed on the first fan 4, and the second temperature sensor is disposed on the second fan 5. The first temperature sensor and the second temperature sensor respectively detect different and rest temperatures in the cooking appliance, and the speed and the direction of the rotation of the first fan 4 and the second fan 5 are determined according to the temperature.

In some embodiments of the present invention, the combined fan further includes a first controller and a second controller, the coil 12 and the first temperature sensor of the first fan 4 are electrically connected to the first controller, the first controller receives the first temperature signal of the first temperature sensor, and sends the first control signal to change the property of the current according to the first temperature signal, thereby realizing the change of the rotating speed and direction of the first fan 4. The coil 12 of the second fan 5 and the second temperature sensor are both electrically connected to a second controller, the second controller receives a second temperature signal of the second temperature sensor, and sends a second control signal according to the second temperature signal to change the property of the current, thereby changing the speed and direction of rotation of the second fan 5. When the temperature in the cooking appliance is low, the first fan 4 can be controlled to rotate only by the first controller, and the second fan 5 is in a non-operating state, or the second fan 5 can be controlled to rotate only by the second controller, and the first fan 4 is in a non-operating state; when the temperature in the cooking appliance is moderate, the first controller controls the first fan 4 to rotate clockwise, the second controller controls the second fan 5 to rotate anticlockwise, and the first fan 4 and the second fan 5 rotate in a positive direction and a negative direction, so that the airflow is discrete; when the temperature in the cooking appliance is high, the first controller controls the first fan 4 to rotate clockwise, the second controller controls the second fan 5 to rotate clockwise, and the air flows of the first fan 4 and the second fan 5 are overlapped and aggregated to achieve the optimal heat dissipation state. According to different heat dissipation requirements of the cooking appliance, whether the first fan 4 and the second fan 5 rotate or not, and the speed and the direction of the rotation are determined through the first temperature sensor and the second temperature sensor.

Another embodiment of the utility model provides a cooking utensil, include:

the heat dissipation part is connected to the box body and used for dissipating heat of the magnetron, and the heat dissipation part is a fan or a combined fan in any one of the embodiments.

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

1. A fan for a cooking appliance, comprising:

a stator assembly;

a rotor assembly disposed within the stator assembly;

2. The fan of claim 1 wherein said rotor assembly has a fixed portion and said fan blade has an engagement portion, said fan blade being connected to said fixed portion by said engagement portion.

3. The fan of claim 2, wherein the stator assembly comprises:

a stator having a circular ring shape;

and the coils are wound on the inner wall of the stator at intervals.

4. The fan as claimed in claim 3, wherein a groove is provided in the stator, and the coil is wound in the groove.

5. The fan of claim 4 wherein the rotor assembly comprises:

the rotor is annular, and the fixing part is arranged on the rotor;

6. The fan as claimed in claim 5, wherein the width of the rotor is smaller than the width of the groove.

7. The fan as claimed in claim 1, wherein each of the fan blades includes a first end and a second end, the first end is connected to an inner wall of the rotor, and a plurality of the second ends form an air outlet region.

8. A combination fan for a cooking appliance, comprising:

a first fan;

a second fan, the second fan and the first fan being arranged along a rotation axis direction, the first fan and the second fan being the fans of any one of claims 1 to 7, the rotation directions of the first fan and the second fan being the same or opposite.

9. The combination fan as claimed in claim 8, further comprising:

10. A cooking appliance, characterized in that it comprises:

the heat dissipation part is connected to the box body and used for dissipating heat of the magnetron, and the heat dissipation part is the fan according to claim 1 or the combined fan according to claim 8.