CN214404043U

CN214404043U - Fan subassembly and cleaning device

Info

Publication number: CN214404043U
Application number: CN202023318627.1U
Authority: CN
Inventors: 许雷
Original assignee: Shenzhen Silver Star Intelligent Technology Co Ltd
Current assignee: Shenzhen Silver Star Intelligent Group Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-15
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a fan assembly and cleaning equipment, wherein, the fan assembly comprises a stator assembly, a rotor assembly, a fan cover impeller and a metal shell cover, the metal shell cover is provided with an inner shell, an outer shell and a connecting part connected between the inner shell and the outer shell, and the inner shell and the outer shell are in cylindrical structures with different sizes; the fan cover covers the upper end of the shell; the stator set is in contact with the inner surface of the inner shell and is positioned in the inner shell, and the rotor set is positioned in the stator set; the impeller is positioned between the upper end of the inner shell and the fan cover and is fixed on the rotating shaft of the rotor set. The utility model discloses fan subassembly has promoted heat dispersion, has reduced the noise in effective radiating, and then has improved comprehensive properties.

Description

Fan subassembly and cleaning device

Technical Field

The utility model relates to a cleaning device field especially relates to a fan subassembly and cleaning device.

Background

With the ever-increasing standard of living, people are eagerly to free hands from busy cleaning work, and more people select efficient and intelligent cleaning equipment to replace the traditional sweeping tool. The fan assembly is an important component of the cleaning device.

At present, an impeller is usually arranged at the upper ends of a stator set and a rotor set of a fan assembly and is arranged on a rotating shaft of the rotor set, a fan cover is arranged at the upper end of the stator set and covers the impeller, the impeller rotates along with the rotor set, and generated airflow directly passes through the stator set and the rotor set.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, embodiments of the present invention provide a fan assembly and a cleaning device, aiming to improve the heat dissipation effect of the fan assembly.

According to an aspect of an embodiment of the present invention, there is provided a fan assembly for a cleaning device, the fan assembly includes a stator assembly, a rotor assembly, a fan housing, an impeller, and a metal casing, the metal casing has an inner casing, an outer casing, and a connecting portion connected between the inner casing and the outer casing, and the inner casing and the outer casing are cylindrical structures with different sizes; the fan cover covers the upper end of the shell; the stator set is in contact with the inner surface of the inner shell and is positioned in the inner shell, and the rotor set is positioned in the stator set; the impeller is positioned between the upper end of the inner shell and the fan cover and is fixed on the rotating shaft of the rotor set.

In an alternative form, the blower assembly further comprises a guide vane mounted between an outer surface of the upper end of the inner casing and an inner surface of the upper end of the outer casing for guiding the gas to the gas flow passage formed between the inner casing and the outer casing.

In an optional mode, the guide vane includes an inner ring, an outer ring, and a plurality of vanes connected between the inner ring and the outer ring, the plurality of vanes are uniformly distributed in a radial direction, and each of the vanes is arranged in an inclined manner in an axial direction.

In an alternative form, the upper end to the lower end of each vane is tapered in thickness.

In an alternative form, the lower end of at least one of the plurality of vanes is located above the connection portion.

In an alternative mode, an inner surface of the inner ring is provided with a first positioning portion, an outer surface of the inner casing is provided with a second positioning portion, and the first positioning portion cooperates with the second positioning portion to position the guide vane in the circumferential direction.

In an alternative mode, the outer surface of the outer ring of the guide vane is tightly matched with the inner surface of the shell; and/or the inner surface of the inner ring of the guide vane is tightly matched with the outer surface of the inner shell.

In an alternative form, the stator pack is fixed in the inner casing by a tight fit.

In an optional mode, the fan assembly further comprises a base, the lower end of the inner shell is covered by the base, and a rotating shaft of the rotor set is fixed on the base through a bearing.

According to another aspect of the embodiment of the present invention, there is provided a cleaning device, comprising a housing and a fan assembly mounted on the housing, wherein the fan assembly comprises a stator set, a rotor set, a fan housing, an impeller and a metal casing, the metal casing has an inner casing, an outer casing and a connecting portion connected between the inner casing and the outer casing, and the inner casing and the outer casing are cylindrical structures with different sizes; the fan cover covers the upper end of the shell; the stator set is in contact with the inner surface of the inner shell and is positioned in the inner shell, and the rotor set is positioned in the stator set; the impeller is positioned between the upper end of the inner shell and the fan cover and is fixed on the rotating shaft of the rotor set.

In an alternative form, the cleaning apparatus is a cleaning robot or a vacuum cleaner.

The embodiment of the utility model provides an in, through setting up the metal clamshell, this metal clamshell has the inner shell, the shell and the connecting portion of connecting inner shell and shell, the impeller is located between the upper end and the fan housing of inner shell, and fix in the pivot of rotor group, the inside of inner shell is located to stator group and rotor group, stator group and inner shell internal surface contact, in operation, the heat that the motor that comprises stator group and rotor group produced passes to the surface of inner shell by the internal surface of inner shell, the impeller rotates along with the rotor group, the high velocity air who produces passes through the passageway between inner shell and the shell, form strong convection with the surface of inner shell, can effectively dissipate and take away the heat, and, flow through from smooth passageway between inner shell and the shell because of the air current, and not flow through from stator group surface, the air current is more steady, can the noise reduction, comprehensive properties obtains promoting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Figure 1 is an exploded view of one embodiment of a fan assembly of the present invention;

FIG. 2 is a cross-sectional view of the blower assembly of FIG. 1;

FIG. 3 is a schematic illustration of the construction of the metal can of the blower assembly of FIG. 1;

FIG. 4 is a schematic view of the metal can of the blower assembly of FIG. 1 and a base thereon;

fig. 5 is a schematic structural view of a guide vane of the fan assembly of fig. 1.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like, referred to or may be referred to in this specification, are defined relative to their configuration, and are relative concepts. Therefore, it may be changed according to different positions and different use states. Therefore, these and other directional terms should not be construed as limiting terms.

The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The utility model provides an embodiment of fan subassembly please refer to fig. 1 to 3, and this fan subassembly is used for cleaning equipment, include: the fan comprises a fan cover 1, an impeller 2, guide vanes 3, a metal shell cover 4, a stator group 5, a rotor group 6, a base 7 and a PCB assembly 8.

The metal shell cover 4 has an inner shell 42, an outer shell 44, and a connecting portion 43 connecting the inner shell 42 and the outer shell 44. The inner shell 42 and the outer shell 44 are cylindrical structures of different sizes. The outer surface of the inner case 42 and the inner surface 44 of the outer case form an air flow passage after being connected by the connection portion 43. The wind shield 1 covers the upper end of the outer shell 44, the impeller 2 is located between the upper end of the inner shell 42 and the wind shield 1, the stator assembly 5 is located in the inner shell 42 in contact with the inner surface of the inner shell 42, and the rotor assembly 6 is located in the stator assembly 5. The impeller 2 is fixedly installed on the rotating shaft of the rotor set 6 and is located between the upper end of the inner casing 42 and the fan housing 1.

When the fan assembly works, because the inner surfaces of the stator set 5 and the inner shell 42 are in contact and the inner shell 42 is made of metal materials, heat generated by rotation of the rotor set 6 is transmitted to the inner shell 42 through the stator set 5, the heat conducting performance is excellent, meanwhile, the inner shell 42 also plays a role of a protective shell of the stator set 5, a motor outer shell does not need to be arranged, and materials are saved. The impeller 2 enters the airflow channel along with the airflow generated by the rotation of the rotor set 6, and high-speed convection is formed on the outer surface of the inner shell 42, so that heat generated by the rotation of the rotor set 6 when the fan works can be effectively taken away, and the heat dissipation effect of the fan is improved. Moreover, the inner shell 42 and the outer shell 44 have flat surfaces, and airflow flows between the inner shell 42 and the outer shell 44 instead of flowing through the surfaces of the stator groups, so that the airflow is more stable, the working efficiency of the fan can be improved, and noise can be effectively reduced.

Further, stator group 5 is fixed in inner shell 42 through the tight fit, and need not supplementary mounting structure, fixes in inner shell 42 through pressing direct socket joint promptly, and both in close contact with are favorable to improving the heat dissipation.

Further, the guide vane 3 is installed between the outer surface of the upper end of the inner casing 42 and the inner surface of the upper end of the outer casing 44, and is used for guiding the air to flow to the air flow channel formed between the inner casing 42 and the outer casing 44, so that the efficient flow of the air flow is realized, the speed of the air flow passing through the air flow channel is increased, and the heat dissipation effect is further improved.

Further, referring to fig. 4, the guide vane 3 includes an inner ring 32, an outer ring 34, and a plurality of vanes 33 connected between the outer ring and the inner ring, the plurality of vanes 33 are uniformly distributed in a radial direction, each vane 33 is inclined in an axial direction, and further, the plurality of vanes 33 guide the airflow entering between the inner ring 32 and the outer ring 34, so as to achieve a preset flow direction of the airflow.

The thickness of the upper end of each blade 33 to the lower end of the blade 33 is gradually reduced, so that the resistance of the airflow on the blade 33 is reduced, and the flow velocity of the airflow is improved.

The lower end of at least one of the blades 33 is located above the connecting portion 43, and the air flow guided by the blades 33 is prevented from directly blowing onto the connecting portion 43 to cause air flow turbulence. Since three connecting portions 43 are provided between the inner casing 42 and the outer casing 44 in this embodiment, the lower ends of the three blades 33 are located above the corresponding connecting portions 43, respectively.

Further, referring to fig. 4 again, the inner surface of the inner ring 32 is provided with a first positioning portion 322, the outer surface of the inner shell 42 is provided with a second positioning portion 423, and the first positioning portion 322 and the second positioning portion 423 are matched with each other to limit the guide vane 3 in the circumferential direction, so as to prevent the guide vane 3 from rotating along the airflow direction under the influence of wind force, and meanwhile, the installation and pre-positioning function can be achieved.

In this embodiment, the first positioning portion 322 is a protruding rib, the second positioning portion 423 is a groove matched with the protruding rib, and the protruding rib is clamped in the groove to complete the fixing. Preferably, the number of the raised ribs is three, evenly distributed on the inner surface of the inner ring 32. The number of grooves is three, and they are uniformly distributed on the outer surface of the inner case 42.

In order to enhance the fixed installation effect of the guide vane 3, the outer surface of the outer ring of the guide vane 3 is tightly matched with the inner surface of the shell; and/or the inner surface of the inner ring of the guide vane 3 is tightly matched with the outer surface of the inner shell.

Wherein, the inner surface of the outer shell or the outer surface of the inner shell is provided with a step for bearing the guide vane 3 to prevent the guide vane 3 from moving downwards.

Further, a base 7 covers the lower end of the inner casing 42, and a rotating shaft of the rotor assembly 6 penetrates the stator assembly 5 and is fixed on the base 7 through a bearing. The base 7 acts to seal the motor against the ingress of dust.

Further, the PCB assembly 8 is disposed below the base 7 and communicates the control stator assembly 5 and the rotor assembly 6.

Furthermore, in order to facilitate the wind shield 1 to cover the upper end of the housing 44, the edge of the upper end of the housing 44 is provided with a combining portion 442 which is thinner than the lower edge, and correspondingly, the lower end of the inner wall of the wind shield 1 is provided with a covering portion (not labeled in the figure) which is slightly larger than the upper end, and the covering portion covers the combining portion 442, so that the wind shield 1 can better cover the upper end of the housing 44 and is not easy to fall off. The outer surface of the joint of the wind shield 1 and the housing 44 is fixed by using disposable adhesive tape. After the fixing, the fan cover 1 can be more firmly covered at the upper end of the shell, is not easy to be opened by air flow, is fixed by using a disposable adhesive tape, has low cost and is convenient to maintain.

The assembly process of the fan assembly of the embodiment is as follows:

firstly, the stator group 5 is fixed in the inner shell 42 of the metal shell cover 4 in an embedded manner, the rotor group 6 is arranged in the stator group 5, one end of a rotating shaft of the stator group 5 penetrates through and extends out of the upper end of the inner shell 42, the other end of the rotating shaft is fixed on a bearing of the base 7, and the base 7 is arranged at the lower end of the inner shell 42;

then, fixing the impeller 2 on the rotating shaft of the stator assembly 5, installing the guide vanes 3 between the outer surface of the upper end of the inner shell 42 and the inner surface of the upper end of the outer shell 44, and covering the fan cover 1 on the upper end of the outer shell 44;

finally, the PCB assembly 8 is mounted on the bottom surface of the base 7, thereby completing the assembly.

The utility model discloses still provide an embodiment of cleaning device, this cleaning device includes the casing and installs the fan subassembly in the casing, and above-mentioned embodiment is referred to the concrete structure of fan subassembly, because this embodiment cleaning device has adopted the whole technical scheme of above-mentioned embodiment fan subassembly, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought equally, and the repeated description is no longer given here. Wherein, cleaning device is cleaning robot, and it is intelligent cleaning device that can be from moving. However, in other embodiments, the cleaning device may be a vacuum cleaner, which is a manually operated non-intelligent cleaning device.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A fan subassembly for cleaning device, the fan subassembly includes stator group, rotor group, fan housing and impeller, its characterized in that:

the fan assembly further comprises a metal shell cover, the metal shell cover is provided with an inner shell, an outer shell and a connecting part connected between the inner shell and the outer shell, and the inner shell and the outer shell are of cylindrical structures with different sizes;

the fan cover covers the upper end of the shell;

the stator set is in contact with the inner surface of the inner shell and is positioned in the inner shell, and the rotor set is positioned in the stator set;

the impeller is positioned between the upper end of the inner shell and the fan cover and is fixed on the rotating shaft of the rotor set.

2. The fan assembly of claim 1 further comprising a guide vane mounted between an outer surface of the upper end of the inner housing and an inner surface of the upper end of the outer housing for guiding the flow of air to an air flow passage formed between the inner housing and the outer housing.

3. The fan assembly of claim 2, wherein the guide vanes comprise an inner ring, an outer ring, and a plurality of vanes connected between the inner ring and the outer ring, the plurality of vanes being uniformly distributed in a radial direction, each of the vanes being disposed in an inclined manner in an axial direction.

4. The fan assembly of claim 3 wherein each of the blades tapers in thickness from an upper end to a lower end.

5. The fan assembly of claim 3, wherein a lower end of at least one of the plurality of blades is positioned above the connection.

6. The fan assembly of claim 3, 4 or 5, wherein the inner surface of the inner ring is provided with a first positioning portion, the outer surface of the inner casing is provided with a second positioning portion, and the first positioning portion cooperates with the second positioning portion to circumferentially position the guide vane.

7. The fan assembly of claim 3, 4 or 5,

the outer surface of the outer circular ring of the guide vane is tightly matched with the inner surface of the shell; and/or

The inner surface of the inner ring of the guide vane is tightly matched with the outer surface of the inner shell.

8. The fan assembly according to any of claims 1-5, wherein the stator pack is secured in the inner housing by a tight fit.

9. The fan assembly according to any one of claims 1 to 5, further comprising a base, wherein the base covers a lower end of the inner casing, and a rotating shaft of the rotor set is fixed to the base through a bearing.

10. A cleaning appliance comprising a housing and a fan assembly mounted to the housing, wherein the fan assembly is as claimed in any one of claims 1 to 9.

11. The cleaning apparatus of claim 10, wherein the cleaning apparatus is a cleaning robot or a vacuum cleaner.