CN215762325U - Fan module and outer rotor air supply assembly thereof - Google Patents

Abstract

The utility model discloses a fan module and an outer rotor air supply assembly thereof, wherein the outer rotor air supply assembly comprises an air supply structure for realizing air supply relative to the rotation of a stator, an installation cavity for installing a bearing is arranged at the center of the air supply structure, a magnet structure for generating a magnetic field is arranged between the installation cavity and the air supply structure, the magnet structure and the installation cavity are integrally formed. The outer rotor air supply assembly can avoid the noise problem caused by secondary assembly when rotating, and solve the problem of abrasion at the matching part of the split structure, thereby improving the reliability of the whole structure and further prolonging the service life of the whole machine; meanwhile, the integrated structure can simplify the production process, so that the production cost can be reduced.

Description

Fan module and outer rotor air supply assembly thereof

Technical Field

The utility model relates to the technical field of fan module equipment, in particular to an outer rotor air supply assembly. The utility model also relates to a fan module with the outer rotor air supply assembly.

Background

At present, a fan module in the market comprises an inner rotor structure and an outer rotor structure, a one-way output shaft of the inner rotor structure is connected with an air supply mechanism (impeller) through secondary assembly, the fan module and the impeller of the structure are designed in a split mode, and the integrity is not optimized enough; the rotor and the impeller of part external rotor fan adopt split type mounting structure, and this structure requires extremely high to the installation, and the accumulative total error that the independent installation of part brought is great, can lead to impeller and fan module concentricity to be difficult to ensure like this, and simultaneously, rotor and impeller installation department easily wear and tear to can produce the noise in the operation, can influence the life of fan module like this.

Therefore, how to avoid influencing the service life of the fan module due to the split installation of the rotor and the impeller is a technical problem to be solved by technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an outer rotor air supply assembly, which can solve the problems of noise and abrasion during operation through an integrally formed structure, so that the service life of a fan module can be prolonged. The utility model also provides a fan module comprising the outer rotor air supply assembly.

In order to achieve the above object, the present invention provides an external rotor air supply assembly, which includes an air supply structure for supplying air by rotating relative to a stator, wherein an installation cavity for installing a bearing is arranged at the center of the air supply structure, a magnet structure for generating a magnetic field is arranged between the installation cavity and the air supply structure, the magnet structure and the installation cavity are integrally formed.

Optionally, the air supply structure, the magnet structure and the mounting cavity are integrally formed by plastic molding through a thermoplastic insulating material.

Optionally, the air supply structure further comprises a connecting structure for connecting the installation cavity and the magnet structure, wherein a plurality of reinforcing ribs distributed radially are arranged on the connecting structure, and any reinforcing rib extends to the air supply structure.

Optionally, the magnet structure comprises a magnet ring and a plurality of permanent magnets arranged inside the magnet ring.

Optionally, the mounting cavity is a groove-type mounting cavity which is integrally plastic-sealed.

Optionally, the air supply structure specifically is single air inlet centrifugal impeller structure, single air inlet centrifugal impeller structure include first connecting ring, a plurality of rigid couplings in on the terminal surface of first connecting ring and follow the circumference evenly distributed's of first connecting ring air supply blade with locate wholly the outside at air supply blade top is connected and is whole air supply blade's second connecting ring, and arbitrary air supply blade orientation the inboard direction of second connecting ring is bent.

Optionally, the air supply structure specifically is two air inlet centrifugal impeller structure, two air inlet centrifugal impeller structure include first connecting ring and two sets of respectively the rigid coupling in air supply blade group on two upper and lower terminal surfaces of first connecting ring, arbitrary group air supply blade group keeps away from the tip outside of first connecting ring is equipped with the connection air supply blade group's second connecting ring, and arbitrary group air supply blade group includes a plurality of air supply blades along circumference evenly distributed, arbitrary air supply blade orientation the inboard direction of second connecting ring is bent.

Optionally, the air supply structure is specifically an axial fan structure, and the axial fan structure includes a circular ring located at the center and a plurality of fan blades fixedly connected to an outer side wall of the circular ring.

The utility model also provides a fan module which comprises the external rotor air supply assembly.

Optionally, the air supply device further comprises an end cover and a stator rotatably connected with the outer rotor air supply assembly, wherein the stator comprises a mounting positioning shaft, a bearing, a core body, an excitation coil and an insulator arranged between the core body and the excitation coil; the two bearings are respectively arranged in the mounting cavity and the groove structures of the end covers, the core body is provided with a plurality of magnetic poles which radially extend and radiate, and the excitation coil is distributed on the peripheries of the magnetic poles.

Compared with the prior art, the outer rotor air supply assembly provided by the embodiment of the utility model comprises an air supply structure, an installation cavity and a magnet structure, wherein the air supply structure is used for rotating relative to a stator so as to realize air supply, the installation cavity is arranged at the center of the air supply structure and is used for installing a bearing on the stator, the magnet structure is arranged between the installation cavity and the air supply structure, and the magnet structure is used for generating a magnetic field; meanwhile, the air supply structure, the magnet structure and the mounting cavity are integrally formed. That is to say, whole outer rotor air supply assembly's air supply structure, magnet structure and installation cavity three adopt integrated into one piece structure, and wherein, the air supply structure is located the outside, and the inside of air supply structure is equipped with the installation cavity that is located the center and is located the magnet structure between installation cavity and the air supply structure. Therefore, when the outer rotor air supply assembly rotates relative to the stator, the air supply structure can supply air, and compared with the traditional split type mounting structure, the outer rotor air supply assembly provided by the embodiment of the utility model can avoid the noise problem caused by secondary assembly when rotating and solve the problem of abrasion of the matching part of the split type structure, so that the reliability of the whole structure can be improved, and the service life of the whole machine can be prolonged; meanwhile, the integrated structure can simplify the production process, so that the production cost can be reduced.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an outer rotor air supply assembly according to an embodiment of the present invention;

fig. 2 is a sectional structure diagram of the outer rotor air supply assembly provided in the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a ring-shaped permanent magnet;

FIG. 4 is a schematic view of a combination structure of a magnetic ring and a plurality of permanent magnets arranged inside the magnetic ring;

FIG. 5 is a schematic structural view of an integral plastic-encapsulated recessed mounting cavity;

FIG. 6 is a schematic structural view of a sheet metal stretch shell type installation chamber;

FIG. 7 is a schematic view of a single intake centrifugal impeller configuration;

FIG. 8 is a schematic view of a dual intake centrifugal impeller configuration;

FIG. 9 is a schematic view of an axial fan configuration;

fig. 10 is a sectional view of a fan module according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of the stator of FIG. 10;

FIG. 12 is a schematic view of the positioning shaft of FIG. 11;

FIG. 13 is a schematic view of a unitary core construction;

FIG. 14 is a schematic view of a split core construction;

fig. 15 is a schematic view of an end cap configuration.

Wherein:

100-an outer rotor air supply component, 101-an installation chamber, 1011-an integrally plastic-encapsulated groove type installation chamber, 1012-a metal plate stretching shell type installation chamber, 102-a magnet structure, 1021-an annular permanent magnet, 1022-a magnetic ring, 1023-the permanent magnet, 103-an air supply structure, 1031-a single air inlet centrifugal impeller structure, 1032-a double air inlet centrifugal impeller structure, 10300-an air supply blade, 10301-a first connecting ring, 10302-a second connecting ring, 1033-an axial fan structure, 10331-a circular ring, 10332-a fan blade, 104-a connecting structure and 105-a reinforcing rib;

200-stator, 201-mounting positioning shaft, 202-core, 2021-integral core structure, 2022-split core structure, 20221-outer core, 20222-inner core, 203-field coil, 204-insulator, 205-bearing;

300-end cap, 301-groove structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the utility model is to provide an outer rotor air supply assembly, which can solve the problems of noise and abrasion during operation through an integrally formed structure, thereby prolonging the service life of a fan module. The other core of the utility model is to provide a fan module comprising the outer rotor air supply assembly.

In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.

As shown in fig. 1 and 2, an outer rotor air supply assembly 100 provided by the embodiment of the present invention includes an air supply structure 103, a mounting chamber 101, and a magnet structure 102, wherein the air supply structure 103 is configured to rotate relative to a stator 200 to achieve air supply, the mounting chamber 101 is disposed at the center of the air supply structure 103, the mounting chamber 101 is configured to mount a bearing 205 on the stator 200, the magnet structure 102 is disposed between the mounting chamber 101 and the air supply structure 103, and the magnet structure 102 is configured to generate a magnetic field; meanwhile, the air supply structure 103, the magnet structure 102 and the installation chamber 101 are integrally formed.

That is, the air supply structure 103, the magnet structure 102 and the mounting chamber 101 of the whole outer rotor air supply assembly 100 are integrally formed, wherein the air supply structure 103 is arranged outside, and the mounting chamber 101 at the center and the magnet structure 102 between the mounting chamber 101 and the air supply structure 103 are arranged inside the air supply structure 103.

Therefore, when the outer rotor air supply assembly 100 rotates relative to the stator 200, the air supply structure 103 can supply air, and compared with the traditional split type mounting structure, the outer rotor air supply assembly 100 provided by the embodiment of the utility model can avoid the noise problem caused by secondary assembly during rotation and solve the problem of abrasion of the matching part of the split type structure, so that the reliability of the whole structure can be improved, and the service life of the whole machine can be prolonged; meanwhile, the integrated structure can simplify the production process, and a connecting part between the impeller and the rotor is omitted, so that the productivity of the product can be improved, and the manufacturing and maintenance cost is reduced.

Preferably, the air supply structure 103, the magnet structure 102 and the installation cavity 101 are integrally molded by plastic through a thermoplastic insulating material. For example, PP (polypropylene) material or PE (polyethylene) material may be used for integral plastic molding.

In order to further improve the structural stability of the outer rotor air supply assembly 100, the outer rotor air supply assembly 100 further includes a connecting structure 104 connecting the mounting chamber 101 and the magnet structure 102, the connecting structure 104 is provided with a plurality of reinforcing ribs 105 distributed radially, and any reinforcing rib 105 extends to the air supply structure 103. Specifically, the ribs 105 may be injection molded outside the installation chamber 101 in a radial distribution.

Of course, the connection structure 104 may be specifically configured as a circular ring cover structure according to actual needs, and the inner wall of the connection structure 104 should match with the core 202 of the stator 200 and the excitation coil 203 disposed on the core 202.

Specifically, the magnet structure 102 is fixed to the inner wall of the air blowing structure 103, and the magnet structure 102 may be specifically configured as a ring-shaped permanent magnet 1021, as shown in fig. 3; alternatively, magnet structure 102 may include a combination of a magnetic ring 1022 and a plurality of permanent magnets 1023 disposed inside magnetic ring 1022, as shown in fig. 4.

In addition, the mounting cavity 101 is embodied as an integrally molded groove-type mounting cavity 1011, that is, when the outer rotor air supply assembly 100 is integrally molded by plastic molding through a thermoplastic insulating material, a groove for accommodating the bearing 205 on the stator 200 is formed at a central position in the air supply structure 103, as shown in fig. 5; alternatively, a metal plate stretching shell may be preset, the metal plate stretching shell has a groove for accommodating the bearing 205 on the stator 200, and the metal plate stretching shell, the air blowing structure 103 and the magnet structure 102 are integrally molded by plastic sealing during molding, so as to form a metal plate stretching shell type mounting cavity 1012, as shown in fig. 6.

As a specific embodiment, the air supply structure 103 is a single air inlet centrifugal impeller structure 1031, and specifically, the single air inlet centrifugal impeller structure 1031 includes a first connection ring 10301, a second connection ring 10302, and a plurality of air supply blades 10300. The plurality of blowing blades 10300 are fixedly connected to the end surface of the first connecting ring 10301 and uniformly distributed along the circumferential direction of the first connecting ring 10301, and the second connecting ring 10302 is disposed outside the top of all the blowing blades 10300 and is used for connecting all the blowing blades 10300, as shown in fig. 7.

The radial dimension of the second connecting ring 10302 is smaller than the radial dimension of the first connecting ring 10301, and the radial dimension of the first connecting ring 10301 is larger than the dimension of any one of the blower blades 10300 in the bending direction.

Further, any one of the blower blades 10300 is bent toward the inner side of the second connection ring 10302. Thus, the blowing blades 10300 uniformly distributed along the circumferential direction are arranged above the first connecting ring 10301, a preset gap is formed between any two adjacent blowing blades 10300, and when the blowing structure 103 with the structure is in operation, external air enters the blowing structure 103 along the axial direction of the blowing structure 103 and is discharged out of the blowing structure 103 along the gap between the blowing blades 10300.

As another specific embodiment, the air supply structure 103 is specifically a double intake centrifugal impeller structure 1032, and the double intake centrifugal impeller structure 1032 can be regarded as a structure formed by combining two single intake centrifugal impeller structures 1031. Specifically, the double inlet centrifugal impeller structure 1032 includes a first connecting ring 10301 and two sets of blower blade sets respectively fixed to the upper and lower end surfaces of the first connecting ring 10301, and a second connecting ring 10302 for connecting the blower blade sets is provided on the outer side of the end portion of any one set of blower blade sets far from the first connecting ring 10301, as shown in fig. 8.

The radial dimension of the second connecting ring 10302 is smaller than the radial dimension of the first connecting ring 10301, and the radial dimension of the first connecting ring 10301 is larger than the dimension of any one of the blower blades 10300 in the bending direction.

Further, each of the blower blade groups includes a plurality of blower blades 10300 uniformly distributed in the circumferential direction, and each of the blower blades 10300 is bent toward the inside of the second connection ring 10302.

Thus, the blowing blades 10300 uniformly distributed along the circumferential direction are arranged above and below the first connecting ring 10301, and a predetermined gap is provided between any two adjacent blowing blades 10300 in any group of blowing blade groups, when the blowing structure 103 with the structure operates, external air enters the blowing structure 103 along both axial sides of the blowing structure 103, and is discharged from the blowing structure 103 along the gap between the blowing blades 10300 in the corresponding blowing blade group.

Of course, in addition to the above two structures, the air supply structure 103 may also be configured as an axial fan structure 1033, as shown in fig. 9, the axial fan structure 1033 includes a circular ring 10331 located at the center and a plurality of fan blades 10332 fixed to the outer side wall of the circular ring 10331. The ring 10331, the magnet structure 102 and the mounting cavity 101 are molded in an integral plastic manner, and the fan blades 10332 are used for supplying air.

The fan module provided by the utility model comprises an outer rotor air supply assembly 100 described in the specific embodiment; the air conditioner further comprises an end cover 300 and a stator 200 which is rotationally connected with the outer rotor air supply assembly 100, as shown in fig. 10. Other parts of the fan module can be referred to the prior art and are not expanded herein.

Specifically, as shown in fig. 11, the stator 200 includes a mounting positioning shaft 201, a bearing 205, a core 202, an exciting coil 203, and an insulator 204 provided between the core 202 and the exciting coil 203; at least one end of the mounting positioning shaft 201 is provided with a hole or a groove, as shown in fig. 12; the two bearings 205 are respectively installed in the installation cavity 101 and the groove structure 301 of the end cover 300, the core 202 is fixedly connected to the installation positioning shaft 201, the inner rings of the two bearings 205 are respectively fixedly connected to the installation positioning shaft 201, and the core 202 and the excitation coil 203 are located between the two bearings 205; the core 202 has a plurality of radially extending radiating magnetic poles, and the field coil 203 is arranged around the magnetic poles.

According to actual needs, the core 202 is made of a magnetic conductive material, and the core 202 may be configured as an integrated core structure 2021, as shown in fig. 13; alternatively, the core 202 may be provided as a split core structure 2022, in which the split core 202 structure includes an outer core 20221 and an inner core 20222, and the outer core 20221 and the inner core 20222 are integrally molded by plastic molding through an insulating material, as shown in fig. 14.

As shown in fig. 15, the end cap 300 is a metal plate stretching shell with a thickness of 1-3mm, and the center of the metal plate surface is provided with a groove structure 301 for matching with the bearing 205.

It should be noted that the fan module with the outer rotor air supply assembly 100 can be applied to the fields of fans, range hoods, air purifiers, ceiling fans and the like.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The fan module and the outer rotor air supply assembly thereof provided by the utility model are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are provided only to help understand the concepts of the present invention and the core concepts thereof. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. An outer rotor air supply assembly (100) is characterized by comprising an air supply structure (103) which is used for realizing air supply relative to a stator (200) in a rotating mode, an installation cavity (101) which is used for installing a bearing (205) is arranged in the center of the air supply structure (103), a magnet structure (102) which is used for generating a magnetic field is arranged between the installation cavity (101) and the air supply structure (103), the magnet structure (102) and the installation cavity (101) are integrally formed.

2. The external rotor air supply assembly (100) of claim 1, wherein the air supply structure (103), the magnet structure (102) and the mounting cavity (101) are integrally formed in an injection molding mode through thermoplastic insulating materials.

3. The external rotor air supply assembly (100) of claim 1, further comprising a connecting structure (104) connecting the mounting chamber (101) and the magnet structure (102), wherein a plurality of reinforcing ribs (105) are radially distributed on the connecting structure (104), and any reinforcing rib (105) extends to the air supply structure (103).

4. The external rotor air supply assembly (100) of claim 1, wherein the magnet structure (102) includes a magnet ring (1022) and a plurality of permanent magnets (1023) disposed inside the magnet ring (1022).

5. The external rotor air supply assembly (100) of claim 1, wherein the mounting cavity (101) is embodied as an integrally molded recessed mounting cavity (1011).

6. The external rotor air supply assembly (100) of any one of claims 1 to 5, wherein the air supply structure (103) is a single air inlet centrifugal impeller structure (1031), the single air inlet centrifugal impeller structure (1031) comprises a first connection ring (10301), a plurality of air supply blades (10300) fixedly connected to an end surface of the first connection ring (10301) and uniformly distributed along a circumferential direction of the first connection ring (10301), and a second connection ring (10302) arranged at an outer side of tops of all the air supply blades (10300) and connected to all the air supply blades (10300), and any one of the air supply blades (10300) is bent towards an inner side direction of the second connection ring (10302).

7. The external rotor air supply assembly (100) of any one of claims 1-5, wherein the air supply structure (103) is a double-air-inlet centrifugal impeller structure (1032), the double-air-inlet centrifugal impeller structure (1032) includes a first connection ring (10301) and two sets of air supply blade sets respectively fixed on the upper and lower end faces of the first connection ring (10301), a second connection ring (10302) connected with the air supply blade sets is disposed on the outer side of the end portion of any one set of air supply blade sets far away from the first connection ring (10301), and any one set of air supply blade sets includes a plurality of air supply blades (10300) uniformly distributed along the circumferential direction, and any one of the air supply blades (10300) is bent towards the inner side direction of the second connection ring (10302).

8. The external rotor air supply assembly (100) of any one of claims 1-5, wherein the air supply structure (103) is an axial fan structure (1033), and the axial fan structure (1033) comprises a central circular ring (10331) and a plurality of fan blades (10332) fixedly connected to an outer side wall of the circular ring (10331).

9. A fan module comprising an outer rotor blower assembly (100) according to any one of claims 1-8.

10. The fan module as recited in claim 9, further comprising an end cap (300), and a stator (200) rotatably coupled to the outer rotor blower assembly (100), the stator (200) comprising a mounting positioning shaft (201), a bearing (205), a core (202), a field coil (203), and an insulator (204) disposed between the core (202) and the field coil (203); the two bearings (205) are respectively installed in the groove structures (301) of the installation chamber (101) and the end cover (300), the core body (202) is provided with a plurality of magnetic poles which extend and radiate along the radial direction, and the excitation coil (203) is arranged on the periphery of the magnetic poles.

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