CN220452316U - Bracket assembly for fixing axial flow fan motor - Google Patents

Abstract

The present utility model relates to a bracket assembly for fixing an axial flow fan motor. The bracket component comprises a plurality of brackets which are arranged around the circumference of the motor shell at intervals in sequence, wherein the brackets comprise bracket main bodies and bending parts, the bracket main bodies are connected to the motor shell, the extending directions of the bracket main bodies are tangential to the circumference of the motor shell, one ends of the bending parts are connected to the bracket main bodies, and the other ends of the bending parts are bent towards the direction close to the air duct and are connected to the air duct. The support assembly is simple in structure, tangential force output by the motor is parallel to the extending direction of the support body by arranging the support body tangentially to the motor shell, so that vibration of the fan can be effectively reduced, the running stability of the fan is improved, the service life of the fan is prolonged, the support body can be directly connected to the motor shell, intermediate connecting accessories such as a connecting frame or a mounting ring are not required to be used for connecting the support, and the number of parts is reduced.

Description

Bracket assembly for fixing axial flow fan motor

Technical Field

The present utility model relates to a bracket assembly for fixing an axial flow fan motor.

Background

The axial flow fan is used for running the fan in an axial flow mode and generating air flow in the same direction as the axis of the fan blade. The axial flow fan has very wide application, such as an electric fan, and an air conditioner outdoor fan is an axial flow running fan.

The axial flow fan generally comprises a motor, a wind guide ring, an impeller which is arranged on the motor and can be rotationally arranged in the wind guide ring around the axial lead of a motor shaft, a net cover which is covered at the wind outlet end of the wind guide ring, and a plurality of motor supports which are arranged at intervals in sequence around the circumference of the motor, wherein one end of each motor support is connected to the motor, the other end of each motor support is connected to the wind guide cylinder and is used for fixing the motor, and the strength and rigidity of each motor support have important influence on the vibration level of the axial flow fan.

To enhance blower strength and reduce blower vibration, prior art axial flow fans typically use a connecting bracket to connect two adjacent motor brackets, such as the axial flow fan in CN 217713047U; or by providing a mounting ring on the outer peripheral side of the motor, one end of the motor bracket is connected by the mounting ring, such as the axial flow fan in patent CN104100545 a. However, the problem of high vibration value of the fan still exists in the mode, especially under the condition that the fan rotates at a high speed. Furthermore, the use of a connecting frame or mounting ring undoubtedly increases the number of parts.

Disclosure of Invention

The utility model aims to provide a bracket assembly for fixing an axial flow fan motor, which is simple in structure, and meanwhile, can reduce fan vibration and improve the stability of the fan.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a support subassembly for fixing axial fan motor, axial fan includes the motor, installs on the motor and can wind the axial lead pivoted impeller of motor shaft and enclose the air duct of establishing at impeller periphery side, support subassembly includes a plurality of supports that set up around motor housing's circumference interval in proper order, the support includes support main part and kink, support main part connects on motor housing and its extending direction is tangent with motor housing's periphery circle, the one end of kink is connected in the support main part, the other end is towards being close to the air duct direction is crooked and is connected on the air duct.

The prior art holders have been found to have the following problems, since the holder bodies extend substantially radially outwardly of the motor, such as the holders disclosed in CN217713047U, CN104100545A, etc.: the excitation force generated by the fan rotor system between two adjacent brackets cannot offset part of components, so that the fan vibration value is large, and the stability of the fan is ensured by connecting the brackets through the middle connecting fittings. The inventor designs the support, especially through tangent design of support main part and motor housing, make the tangential force of motor output parallel with the extending direction of support main part, thereby the power that produces after making the fan rotor system motion can offset partial component each other on every support, effectively reduced fan vibration, stability and the life of fan operation have been improved, and the support can be directly installed on motor housing, need not to use intermediate connection accessory such as link or collar, reduced spare part quantity, the cost is reduced.

Preferably, the inner side surface and the outer side surface of the bracket main body are parallel to each other, and the inner side surface and the outer circumference of the bracket main body are cut.

Preferably, the width of the bracket main body part connected with the motor shell is Wmm, and the total mass of the motor and the impeller is Mkg, wherein W/M is more than or equal to 3.4 and less than or equal to 4.2.

In some embodiments, the width of the stent body gradually decreases from inside to outside along the extending direction thereof.

Further, a ratio of the maximum width of the stent body to the minimum width of the stent body is greater than or equal to 4/5.

Preferably, the thickness of the bracket main body is Hmm, and the total mass of the motor and the impeller is Mkg, wherein H/M is more than or equal to 0.145 and less than or equal to 0.23.

Preferably, a bracket main body portion connected to the motor housing is connected to the motor housing by a fastening member.

Preferably, the bending part is connected with the air duct through a fastening part.

In some embodiments, the fastening component includes a screw and a nut, a plurality of first through holes arranged along a width direction of the bracket body are formed in a bracket body portion connected with the motor housing, one end of the screw, which is far away from a nut end of the screw, passes through the first through holes to be connected with the nut, and the nut end of the nut is propped in a groove of the motor housing.

Further, the number of the first through holes is 2-4.

In some embodiments, the fastening component includes a screw and a nut, the bending portion is provided with one or more second through holes, the air duct is provided with a third through hole corresponding to the second through holes, one end of the screw, far away from the nut end, passes through the second through hole and the third through hole respectively and is connected with the nut, and the nut end of the nut is propped against the bending portion or the air duct.

Further, the number of the second through holes is 2.

Preferably, the bending part comprises a bending area connected to the bracket main body and bending towards the direction close to the air duct and a folding area connected to the bending area, and one or more second through holes for being matched with the fastening part to enable the bending part to be connected with the air duct are formed in the folding area.

Preferably, the number of the brackets is 3 to 6.

In some embodiments, the number of the brackets is 4.

Preferably, the bracket body and the bending portion are integrally formed.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the support assembly is simple in structure, tangential force output by the motor is parallel to the extending direction of the support body by arranging the support body tangentially to the motor shell, so that vibration of the fan can be effectively reduced, the running stability of the fan is improved, the service life of the fan is prolonged, the support body can be directly connected to the motor shell, intermediate connecting accessories such as a connecting frame or a mounting ring are not required to be used for connecting the support, and the number of parts is reduced.

Drawings

FIG. 1 is a schematic structural view of a bracket assembly in embodiment 1;

FIG. 2 is a front view of the bracket assembly of embodiment 1;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

fig. 4 is a schematic structural view of the bracket in embodiment 1;

fig. 5 is a schematic structural view of an axial flow fan in embodiment 1;

wherein: 1. a bracket; 11. a holder main body; 111. an inner side surface; 112. an outer side surface; 113. a first through hole; 12. a bending part; 121. a bending region; 122. a folding zone; 123. a second through hole;

2. a motor; 21. a housing; 22. a fin; 23. a clamping arm; 24. a peripheral circle; 25. a T-shaped groove;

3. an impeller;

4. a mounting base;

5. a fastening member; 51. a screw; 511. a nut end; 52. a nut;

x, extension direction, Y, width direction.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings.

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In describing embodiments of the present utility model, it should be understood that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In embodiments of the utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

Example 1

As shown in fig. 5, an axial flow fan includes a motor 2, an impeller 3, an air duct, a bracket assembly, and a mesh enclosure (not shown). Wherein, impeller 3 is installed on motor 2 and can rotate around the axial lead of motor 2 axle under the drive of motor 2, and the specific structure of impeller 3 references prior art, and this application does not make specific limitation. The air duct comprises a cylinder (not shown in the figure) coaxial with the motor 2 shaft and a mounting seat 4 connected to the air inlet end of the cylinder and extending outwards along the radial direction of the cylinder, the cylinder is arranged on the outer peripheral side of the impeller 3, a through groove is formed in the middle part of the mounting seat 4, and the motor 2 is positioned in the through groove. The net cover is covered at the air outlet end of the cylinder body, the structure of the net cover can also refer to the prior art, and the net cover is not particularly limited.

Referring to fig. 1 and 2, the stand assembly includes a plurality of stands 1 sequentially spaced around the circumference of the housing of the motor 2, and preferably, the stand assembly includes 3 to 6 stands 1 equally spaced, and in this embodiment, the stand assembly includes 4 stands 1. Each of the holders 1 is preferably identical in shape and size, and one of the holders 1 is exemplified as described in detail below.

Referring to fig. 1, 2 and 4, the bracket 1 includes a bracket body 11 and a bent portion 12. The holder body 11 is connected to the housing of the motor 2 and its extension X is tangential to the outer circumference 24 of the housing of the motor 2, and further the inner side 111 and the outer side 112 of the holder body 11 are parallel to each other, the inner side 111 of the holder body 11 being tangential or substantially tangential to the outer circumference. By the design, partial components can be offset on the bracket 1 by the force generated after the fan rotor system moves, so that the vibration of the fan can be reduced, the running stability of the fan can be improved, and the service life of the fan can be prolonged.

In order to further secure the stability of the stent 1, the stent body 11 needs to have a certain width and thickness. Specifically, the width of the part of the bracket main body 11 connected with the shell of the motor 2 is Wmm, the thickness of the bracket main body 11 is Hmm, and the total mass of the motor 2 and the impeller 3 is Mkg, wherein W/M is more than or equal to 3.4 and less than or equal to 4.2,0.145 and H/M is more than or equal to 0.23.

Further, in order to save materials and reduce material costs, the width of the stand body 11 gradually decreases from inside to outside along the extending direction X thereof, but the ratio of the maximum width of the stand body 11 to the minimum width of the stand body 11 needs to be greater than or equal to 4/5 to ensure the stability of the stand 1.

The bracket body 11 is connected with the housing of the motor 2 through the fastening part 5. Specifically, the fastening member 5 includes a screw 51 and a nut 52, and a bracket body portion connected to the housing of the motor 2 is provided with a plurality of first through holes 113 arranged along the width direction Y of the bracket body 11, preferably 2 to 4 first through holes 113, in this embodiment 3 first through holes 113. Taking one of the first through holes 113 as an example, one end of the screw 51 away from the nut end 511 passes through the first through hole 113 to be connected with the nut 52, and the nut end 511 of the nut 52 is abutted in a groove of the housing of the motor 2. Further, the motor 2 housing includes a casing 21, a plurality of fins 22 and a plurality of groups of clamping arm assemblies, the casing 21 is annular, the plurality of fins 22 are enclosed on the outer peripheral side of the casing 21 and extend outwards along the radial direction of the casing 21, the plurality of groups of clamping arm assemblies are arranged on the outer peripheral side of the casing 21 at intervals, each group of clamping arm assemblies includes two clamping arms 23, one ends of the two clamping arms 23 far away from the casing 21 are bent in opposite directions and enclose a T-shaped groove 25, and a nut end 511 of a nut 52 is propped in the T-shaped groove 25. The lengths of the plurality of fins 22 and the plurality of groups of clamping arms 23 along the radial direction of the housing 21 are equal, and the end portions of the plurality of fins 22, which are far away from the housing 21, enclose the outer circumference 24.

One end of the bending portion 12 is connected to the bracket main body 11, and the other end is bent in a direction approaching the mount 4 and connected to the mount 4.

Specifically, the bending portion 12 includes a bending region 121 connected to the bracket main body 11 and bending toward a direction approaching the mounting seat 4, and a folding region 122 connected to the bending region 121, and one or more second through holes 123 for matching with the fastening member 5 to connect the bending portion 12 to the air duct are formed in the folding region 122, and in this embodiment, the number of the second through holes 123 is 2. The mounting seat 4 is provided with a third through hole (not shown) corresponding to the second through hole 123, and one end of the screw 51 away from the nut end 511 of the screw is respectively connected with the nut 52 through the second through hole 123 and the third through hole, and the nut end 511 of the nut 52 is abutted against the bending part 12 or the mounting seat 4.

Preferably, the bracket body 11 and the bent portion 12 are integrally formed.

The bracket assembly in the application has at least the following advantages:

1. the tangential design of this application through with support main part 11 and motor 2 shell, make the tangential force of motor 2 output parallel with the extending direction X of support main part 11 to the power that produces after making fan rotor system motion can offset partial component each other on every support 1, can effectively reduce fan vibration (through comparing, under the same test condition, compare with the axial fan in patent CN217713047U, can reduce 32.1%) with the fan vibration value that uses this application support subassembly, improves fan operation's stability and life.

2. The bracket 1 of the application can be directly arranged on the motor 2 without using middle connecting accessories such as a connecting frame or a mounting ring, so that the number of parts is reduced, the air inlet area can be increased after the middle connecting accessories are omitted, and the performance of the fan is further improved.

3. The support 1 of this application simple structure, the installation of being convenient for.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (10)

1. A support subassembly for fixing axial fan motor, axial fan includes the motor, installs on the motor and can wind the axial lead pivoted impeller of motor shaft and enclose the air duct of establishing at impeller periphery side, its characterized in that: the support assembly comprises a plurality of supports which are arranged around the circumference of the motor shell at intervals in sequence, the supports comprise support bodies and bending parts, the support bodies are connected to the motor shell, the extending direction of the support bodies is tangential to the circumference of the motor shell, one ends of the bending parts are connected to the support bodies, and the other ends of the bending parts are bent towards the direction close to the air duct and are connected to the air duct.

2. The bracket assembly of claim 1, wherein: the inner side surface and the outer side surface of the bracket main body are mutually parallel, and the inner side surface and the outer circumference of the bracket main body are cut.

3. The bracket assembly of claim 1, wherein: the width of the bracket main body part connected with the motor shell is Wmm, and the total mass of the motor and the impeller is Mkg, wherein W/M is more than or equal to 3.4 and less than or equal to 4.2.

4. A bracket assembly according to claim 1 or 3, wherein: the width of the bracket main body gradually decreases from inside to outside along the extending direction.

5. The bracket assembly of claim 4, wherein: the ratio of the maximum width of the stent body to the minimum width of the stent body is greater than or equal to 4/5.

6. A bracket assembly according to claim 1 or 3, wherein: the thickness of the bracket main body is Hmm, and the total mass of the motor and the impeller is Mkg, wherein H/M is more than or equal to 0.145 and less than or equal to 0.23.

7. The bracket assembly of claim 1, wherein: the bracket main body part connected with the motor shell is connected with the motor shell through a fastening part; and/or the number of the groups of groups,

the bending part is connected with the air duct through a fastening part.

8. The bracket assembly of claim 7, wherein: the fastening component comprises a screw and a nut, a plurality of first through holes are formed in a bracket main body part connected with the motor shell and are arranged along the width direction of the bracket main body, one end of the screw, which is far away from the nut end of the screw, penetrates through the first through holes to be connected with the nut, and the nut end of the nut is propped against the inside of a groove of the motor shell;

one or more second through holes are formed in the bending part, a third through hole corresponding to the second through hole is formed in the air duct, one end, away from the nut end, of the screw penetrates through the second through hole and the third through hole respectively to be connected with the nut, and the nut end of the nut is propped against the bending part or the air duct.

9. The bracket assembly of claim 1, wherein: the bending part comprises a bending area connected to the bracket main body and bending towards the direction close to the air duct and a folding area connected to the bending area, and one or more second through holes for being matched with the fastening part to enable the bending part to be connected with the air duct are formed in the folding area.

10. The bracket assembly of claim 1, wherein: 3-6 brackets; and/or the number of the groups of groups,

the bracket main body and the bending part are integrally formed.