CN214698431U

CN214698431U - Axial flow fan

Info

Publication number: CN214698431U
Application number: CN202121172516.6U
Authority: CN
Inventors: 郑江松; 颜士伟; 池晓峰
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-11-12
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses an axial fan, which comprises an air duct, a switched reluctance motor, an axial fan and an air guide cover, wherein the switched reluctance motor comprises a stator assembly, a rotor assembly and a front end cover; the front end cover and the air cylinder are respectively fixed at the two axial ends of the stator assembly. Axial fan, relative other traditional fan's the whole stand alone type mounting structure of motor, stator module directly assembles the dryer in, the motor only needs an end cover to accomplish with the mountable, has simplified motor mounting structure, the motor is with low costs, assembly process is simple.

Description

Axial flow fan

Technical Field

The utility model relates to an axial fan especially relates to an use switched reluctance motor's axial fan.

Background

The fan has wide application in national economy, according to blade action principle and air flow trend in the fan, mainly divide into centrifugal type, axial-flow type and mixed flow type three, the axial-flow type fan has the big, advantage that the noise is low of amount of wind, there is huge application potential in fields such as industrial production, air cycle, furniture are clean, the driving motor of the fan at present mainly regards induction motor, direct current has the brush, permanent magnet brushless motor as the main, induction motor is suitable for the high-power relatively low rotational speed application scene, direct current has brush motor to exert oneself great, the operation is steady, but its carbon brush life is short, can't meet the long-life design requirement of continuous operation, permanent magnet brushless motor has the advantage of high efficiency, long-life, have shown huge market growth trend.

However, the permanent magnet brushless motor needs to adopt a large amount of rare earth permanent magnet materials, and the cost performance is low. In terms of structure: in the prior art, a permanent magnet brushless motor is adopted, because the permanent magnet brushless motor generates large heat in the operation process, a plurality of air outlets are required to be reserved at the front end of an outflow fluid director, and a centrifugal fan is added at the position of a rotor corresponding to the air outlets, so that air can be conveniently supplied from the side of a motor end cover, flows through a stator and rotor air gap, and then is discharged from the reserved air outlets to dissipate heat of the motor; and owing to keep somewhere the existence of air outlet, lead to inside dust, iron fillings and the moisture entering fan, influence the motor performance.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems of complex structure and large axial size of the axial flow fan in the prior art, the utility model provides an axial flow fan solves the problems.

The utility model provides a technical scheme that its technical problem adopted is: an axial flow fan comprises an air duct, a switched reluctance motor, an axial flow fan and an air guide cover, wherein the switched reluctance motor comprises a stator assembly, a rotor assembly and a front end cover; the front end cover and the air cylinder are respectively fixed at the two axial ends of the stator assembly.

Furthermore, the air guide cover comprises a shell with two axial ends communicated, an inflow fluid director positioned in the shell and a plurality of inflow fluid director ribs connecting the inflow fluid director and the shell, and the inflow fluid director is arranged close to the front end of the shell.

Furthermore, the air duct comprises a casing with two axial ends communicated, an outflow fluid director positioned in the casing and a plurality of outflow fluid director ribs connecting the outflow fluid director and the casing; the outflow deflector is arranged near the front end of the housing.

Furthermore, the front end of the outflow fluid director is open, the rear end of the outflow fluid director is closed, and a bearing chamber suitable for mounting the rotating shaft is arranged in the outflow fluid director.

Furthermore, a plurality of axially through mounting holes are formed in the stator assembly, and threaded holes corresponding to the mounting holes are formed in the inner wall of the outflow fluid director.

Furthermore, the mounting holes are formed in a plurality of square columns protruding out of the surface of the stator assembly in the radial direction, a plurality of mounting guide ribs are arranged on the periphery of each threaded hole, and the mounting guide ribs on the periphery of each threaded hole form accommodating grooves for accommodating the square columns.

Furthermore, the caliber of the air duct is gradually reduced from the front end to the rear end.

Furthermore, the peripheries of the air duct and the air guide cover are respectively provided with a buckle and a clamping groove which are mutually clamped.

Furthermore, the outflow fluid director is manufactured by adopting an injection molding process.

Further, one end of the shell facing the air duct is provided with an opening suitable for accommodating an axial flow fan.

The utility model has the advantages that:

(1) the axial flow fan adopts the switched reluctance motor, has reliable structure, low cost, long service life and is competent for high-rotating-speed working condition; compared with the integral independent motor mounting structure of other traditional fans, the stator assembly is directly assembled in the air duct, the motor can be mounted and completed only by one end cover, the motor mounting structure is simplified, the motor cost is low, and the assembly process is simple.

(2) Axial fan place in the divertor that effuses in with the motor, reduce fan axial dimensions, compact structure.

(3) Axial fan, the divertor that effluents be plastics injection molding, the working of plastics can effectively reduce motor vibration, the vibration travelling comfort of whole machine improves, the noise reduces.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is an assembly view of an embodiment of an axial flow fan according to the present invention;

fig. 2 is an exploded view of an axial flow fan according to the present invention;

fig. 3 is an axial sectional view of the axial flow fan according to the present invention;

FIG. 4 is a view of FIG. 3_aAn enlarged view of;

fig. 5 is a front view of the wind scooper of the present invention;

FIG. 6 is a sectional view taken along line B-B of FIG. 5;

fig. 7 is a schematic view of a square column in the stator assembly of the present invention;

fig. 8 is a front view of the air duct in the present invention;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8;

fig. 10 is a perspective view of the air duct in the present invention.

In the figure, 1, an air duct, 101, a housing, 102, an outflow flow guide rib, 1021, a threaded hole, 1022, a bearing chamber, 1023, an installation guide rib, 1024, a receiving groove, 103, an outflow flow guide rib, 104, a clamping groove, 2, a switched reluctance motor, 201, a stator assembly, 2011, a mounting hole, 2012, a square column, 202, a rotor assembly, 203, a front end cover, 3, an axial flow fan, 4, an air guide cover, 401, a housing, 402, an inflow flow guide rib, 403, an inflow flow guide rib, 404, a buckle, 5, a rotating shaft, 6, a nut, 7 and a screw.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The utility model discloses with the one end of air inflow mouth is the front end among the axial fan, with axial fan air outlet's one end is the rear end.

As shown in fig. 1-10, an axial flow fan includes an air duct 1, a switched reluctance motor 2, an axial flow fan 3 and an air guide cover 4, the switched reluctance motor 2 is composed of a stator assembly 201, a rotor assembly 202 and a front end cover 203, the axial flow fan 3 is connected to a rotating shaft 5 of the rotor assembly 202, and the axial flow fan is disposed near the air guide cover 4; the front end cover 203 and the air duct 1 are respectively fixed at two axial ends of the stator assembly 201.

The switched reluctance motor 2 is started, the axial flow fan 3 is driven by the rotating shaft 5 to rotate together, the axial flow fan 3 rotates to generate wind pressure on one side of the switched reluctance motor 2, and then airflow is blown out of the air duct 1. The switched reluctance motor 2 only needs one front end cover 203, and the air duct 1 can be used as a rear end cover of the switched reluctance motor 2, so that an end cover component is omitted, and the structure of the switched reluctance motor 2 is simplified.

Stator module 201 includes stator core and stator coil, rotor module 202 includes pivot 5 and the rotor core of cover in pivot 5, stator core and rotor core fold and press the preparation in the switched reluctance motor 2, the stator salient pole has excitation winding, the rotor salient pole does not have the winding, have the characteristics that the structure is reliable, low cost, longe-lived and be competent in high rotational speed operating mode, the high-power of the axial-flow fan of very agreeing with, high rotational speed, long-life technical demand, have huge application potential. For permanent magnet brushless motor, switched reluctance motor 2 does not have the permanent magnet, and temperature resistance is high, and its stator core and rotor core are salient pole structure in addition, and there is the air current disturbance in the motor during rotation, can play the convection heat dissipation effect to a certain extent, need not heat dissipation mechanism, has simplified initiative heat radiation structure, and no air current passes through the motor, and then this product can use in adverse circumstances, need not worry the inside dust that inhales of motor, improves the motor life-span.

As shown in fig. 5 and 6, the wind scooper 4 includes an outer shell 401 with two axial ends penetrating, an inflow deflector 402 located inside the outer shell 401, and a plurality of inflow deflector ribs 403 connecting the inflow deflector 402 and the outer shell 401, wherein the inflow deflector 402 is arranged near the front end of the outer shell 401. As shown in fig. 6, the inflow deflector 402 is located inside the housing 401, and has a tubular structure with an inner diameter gradually increasing from front to back, the inflow deflector 402 is connected to the housing 401 through an inflow deflector rib 403, and the arrangement of the inflow deflector 402 and the inflow deflector rib 403 ensures that the airflow uniformly enters the axial fan 3.

As shown in fig. 8-10, the air duct 1 includes a casing 101 with two axial ends penetrating, an outflow deflector 102 located inside the casing 101, and a plurality of outflow deflector ribs 103 connecting the outflow deflector 102 and the casing 101; an outflow deflector 102 is arranged near the front end of the housing 101. The arrangement of the outflow guide ribs 103 and the outflow deflector 102 ensures that the air flow flows out of the air cylinder 1 uniformly.

In order to reduce the utility model discloses an overall axial dimensions, the utility model discloses place wind scooper 4 in axial fan 3 in, place dryer 1 in the whole divertor 102 that effuses in switched reluctance motor 2, wind scooper 4 and dryer 1 reciprocal anchorage. As shown in fig. 4 and 6, an end of the housing 401 facing the air duct 1 has an opening adapted to receive the axial fan 3, and the axial length of the outflow deflector 102 is greater than that of the switched reluctance motor 2, so that the outflow deflector 102 can cover the switched reluctance motor 2.

Preferably, the front end of the outflow deflector 102 is open, the rear end of the outflow deflector 102 is closed, and the inside of the outflow deflector 102 is provided with a bearing chamber 1022 suitable for mounting the rotating shaft 5, in which case the outflow deflector 102 is mainly used for mounting the switched reluctance motor 2. The outflow deflector 102 with a closed rear end can keep the stator assembly 201 in a closed environment to prevent external dust from entering.

The stator assembly 201 and the outflow deflector 102 are preferably mounted as follows: as shown in fig. 4, 7 and 10, the stator assembly 201 is provided with a plurality of axially penetrating mounting holes 2011, and the inner wall of the outflow fluid director 102 is provided with threaded holes 1021 corresponding to the mounting holes 2011. The screw 7 is screwed into the screw hole 1021 through the mounting hole 2011.

The periphery of the air duct 1 and the air guide cover 4 is respectively provided with a buckle 404 and a clamping groove 104 which are mutually clamped, as shown in fig. 2, fig. 6 and fig. 10, the periphery of the air guide cover 4 is symmetrically provided with two buckles 404, the periphery of the air duct 1 is symmetrically provided with two clamping plates, the clamping grooves 104 are located on the clamping plates, and the clamping plates are provided with installation direction marks.

The utility model discloses an installation order does: firstly, the stator assembly 201 is arranged in the outflow fluid director 102 of the air duct 1, then the rotor assembly 202 is arranged, the rear end of the rotor assembly 202 is rotatably connected in the bearing chamber 1022, then the front end cover 203 and the stator assembly 201 are fixed through screws, then the fan is arranged at the front end of the rotating shaft 5, the front end is fixed through the nut 6, and finally the air guide cover 4 is arranged through the buckle 404.

Because the threaded hole 1021 is located inside the outflow fluid director 102, after the stator assembly 201 is placed into the outflow fluid director 102, the threaded hole 1021 can be covered, and it is difficult to make the mounting hole 2011 directly face the threaded hole 1021, in order to further improve the installation efficiency, as shown in fig. 7 and 10, the mounting hole 2011 is located on a plurality of square columns 2012 radially protruding the surface of the stator assembly 201, the periphery of each threaded hole 1021 has a plurality of installation guide ribs 1023, and the installation guide ribs 1023 on the periphery of each threaded hole 1021 form an accommodating groove 1024 for accommodating the square columns 2012. During installation, the square column 2012 is only clamped in the corresponding accommodating groove 1024, which means that the threaded hole 1021 and the installation hole 2011 are aligned.

Preferably, the aperture of the air duct 1 is gradually reduced from the front end to the rear end, so as to improve the air outlet speed.

Preferably, the outflow deflector 102 is made by an injection molding process. The working of plastics can effectively reduce motor vibration, and the vibration travelling comfort of whole machine improves, and the noise reduces.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an axial fan which characterized in that: the air duct type switched reluctance motor comprises an air duct (1), a switched reluctance motor (2), an axial flow fan (3) and an air guide cover (4), wherein the switched reluctance motor (2) consists of a stator assembly (201), a rotor assembly (202) and a front end cover (203), the axial flow fan (3) is connected with a rotating shaft (5) of the rotor assembly (202), and the axial flow fan is arranged close to the air guide cover (4);

the front end cover (203) and the air duct (1) are respectively fixed at two axial ends of the stator assembly (201).

2. The axial flow fan according to claim 1, wherein: the wind scooper (4) comprises a shell (401) with two axial ends communicated, an inflow guide device (402) located inside the shell (401) and a plurality of inflow guide ribs (403) connecting the inflow guide device (402) and the shell (401), and the inflow guide device (402) is arranged close to the front end of the shell (401).

3. The axial flow fan according to claim 1, wherein: the air duct (1) comprises a casing (101) with two through axial force ends, an outflow fluid director (102) positioned in the casing (101) and a plurality of outflow fluid director ribs (103) connecting the outflow fluid director (102) and the casing (101); the outflow deflector (102) is arranged near the front end of the housing (101).

4. The axial flow fan according to claim 3, wherein: the front end of the outflow fluid director (102) is open, the rear end of the outflow fluid director (102) is closed, and a bearing chamber (1022) suitable for mounting the rotating shaft (5) is arranged inside the outflow fluid director (102).

5. The axial flow fan according to claim 3, wherein: the stator assembly (201) is provided with a plurality of axially-through mounting holes (2011), and the inner wall of the outflow fluid director (102) is provided with threaded holes (1021) corresponding to the mounting holes (2011).

6. The axial flow fan according to claim 5, wherein: the mounting hole (2011) is located on a plurality of square columns (2012) radially protruding the surface of stator module (201), every the periphery of screw hole (1021) has a plurality of installation direction muscle (1023), and installation direction muscle (1023) of every screw hole (1021) periphery forms and holds holding tank (1024) of square column (2012).

7. The axial flow fan according to claim 1, wherein: the caliber of the air duct (1) is gradually reduced from the front end to the rear end.

8. The axial flow fan according to claim 1, wherein: the peripheries of the air duct (1) and the air guide cover (4) are respectively provided with a buckle (404) and a clamping groove (104) which are mutually clamped.

9. The axial flow fan according to claim 3, wherein: the outflow deflector (102) is made by an injection molding process.

10. The axial flow fan according to claim 2, wherein: the casing (401) has an opening adapted to receive an axial fan (3) at one end facing the air duct (1).