CN220505432U - Axial fan motor fixing mechanism and axial fan - Google Patents

Abstract

The utility model relates to a fixing mechanism of an axial flow fan motor and an axial flow fan. The fixing mechanism comprises a wind guide ring and a plurality of supports, each support comprises a support body, a first connecting part and a second connecting part, the first connecting parts and the second connecting parts are connected to two ends of the support body, the first connecting parts are bent towards the direction away from or close to the wind guide ring and are connected to the motor shell, the second connecting parts are bent towards the direction close to the wind guide ring and are connected to the wind guide ring, the extending direction of the support body is tangential to the peripheral circle of the motor shell, the outer side face and the inner side face of the first connecting parts are coplanar with the outer side face and the inner side face of the support body respectively, and the ratio of the width of the support body to the length of the motor shell along the axial direction of the support body is less than or equal to 1/3. The fixing mechanism has the advantages of simple structure, convenient processing, good stability and low material cost.

Description

Axial fan motor fixing mechanism and axial fan

Technical Field

The utility model relates to a fixing mechanism of an axial flow fan motor and an axial flow fan.

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 generally comprises a motor, an air guide ring, an impeller which is arranged on the motor and can be rotationally arranged in the air guide ring around the axial lead of a motor shaft, a net cover which is covered at the air outlet end of the air 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, and the other end of each motor support is connected to the air guide cylinder and is used for fixing the motor.

Because the fan during operation, the motor can vibrate to can lead to the fan to swing, influence the fan steadiness. In order to ensure the stability of the axial flow fan, the support in the prior art is often wider, the support is larger in size, the cost of materials required for preparing the support is more, for example, the support disclosed in CN206346958U is wider, and an additional component base is required to be used for dispersing the vibration force of the motor, so that the cost of the device is further increased due to the use of the base.

Disclosure of Invention

The utility model aims to provide a fixing mechanism of an axial flow fan motor, which has the advantages of simple structure, low preparation cost and good stability.

Another object of the present utility model is to provide an axial flow fan.

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

the fixing mechanism of the axial flow fan motor comprises a wind guide ring arranged on the outer peripheral side of the motor and a plurality of brackets which are sequentially arranged at intervals around the circumference of the motor shell, wherein the brackets comprise bracket bodies, a first connecting part and a second connecting part which are connected with two ends of the bracket bodies,

the first connecting part is bent towards the direction away from or close to the wind guide ring and is connected to the motor shell,

the second connecting part is bent towards the direction close to the wind guiding ring and is connected with the wind guiding ring,

the extending direction of the support main body is tangential to the peripheral circle of the motor housing, the outer side face and the inner side face of the first connecting part are respectively coplanar with the outer side face and the inner side face of the support main body, and the ratio of the width of the support main body to the length of the motor housing along the axial direction of the support main body is smaller than or equal to 1/3.

By tangential the bracket main body and the motor shell, partial components of the force generated after the fan rotor system moves can be mutually offset on the bracket, so that the fan vibration is reduced; through the design of first connecting portion, guaranteed the steadiness that support and motor housing are connected, reduced the width of support main part to material cost has been reduced.

Preferably, the ratio of the width of the bracket main body to the length of the motor shell along the axial direction is k, and k is more than or equal to 1/6 and less than or equal to 1/4.

Preferably, the first connecting portion includes a first mounting portion and an arc-shaped first transition portion, the first transition portion is located between the first mounting portion and the bracket main body, an extending direction of the first mounting portion is substantially parallel to an axis of the motor shaft and substantially perpendicular to an extending direction of the bracket main body, and the first mounting portion is connected to the motor housing through a mounting member.

Preferably, the motor housing comprises a circular shell, a plurality of fins and a plurality of groups of clamping arm assemblies, wherein the fins are arranged on the outer peripheral side of the shell in a surrounding mode and extend outwards in the radial direction of the shell, the groups of clamping arm assemblies are arranged on the outer peripheral side of the shell at intervals, the lengths of the fins and the groups of clamping arms in the radial direction of the shell are equal, and the fins are far away from the end portions of the shell to form the outer periphery.

Further preferably, each group of clamping arm assemblies comprises two clamping arms, one ends of the two clamping arms far away from the shell are bent towards each other and enclose a T-shaped groove, and the first connecting part is mounted on the T-shaped groove through a mounting member.

Still further preferably, the extending direction of the T-shaped groove is parallel to the axial direction of the motor shaft.

Preferably, the air guide ring comprises a cylinder body and a supporting seat connected to the air inlet end of the cylinder body, a through groove is formed in the middle of the supporting seat, the motor is located in the through groove, and the second connecting portion is connected to the end faces of the supporting seat and the cylinder body, which are opposite to each other, in a separated mode.

Preferably, the second connecting portion comprises a second mounting portion and a second transition portion, the second transition portion is located between the second mounting portion and the support main body, the second transition portion comprises a first transition area which is arc-shaped and connected to the support main body and a second transition area which is connected to the second mounting portion, the second mounting portion comprises a bending area connected to the second transition area and a mounting area which is attached to an end face, away from the support seat, of the support seat, and the mounting area is connected to the support seat through a mounting member.

Further preferably, the outer side surface of the second transition portion and the outer side surface of the holder body are coplanar, and the inner side surface of the second transition portion and the inner side surface of the holder body are coplanar.

In some embodiments, the mounting members are screws and nuts.

Preferably, the bracket body, the first connection portion and the second connection portion are integrally formed.

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

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

Another object of the present utility model is to provide an axial flow fan, which includes a motor, an impeller mounted on the motor and rotatable around an axis of a motor shaft, a fixing mechanism and a mesh enclosure, wherein the fixing mechanism is the fixing mechanism as described above, and the mesh enclosure is disposed at an air outlet end of an air guide ring of the fixing mechanism.

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

according to the utility model, the bracket main body is tangent to the motor shell, so that partial components of the force generated after the fan rotor system moves can be mutually offset on the bracket, and the fan vibration is reduced; through the design of the first connecting part, the connection stability of the bracket and the motor shell is ensured, and the width of the bracket main body is reduced, so that the material cost is reduced;

the fixing mechanism is simple in structure and convenient to process.

Drawings

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

fig. 2 is a rear view of the axial flow fan in embodiment 1;

fig. 3 is a schematic structural view of the bracket and the motor in embodiment 1;

fig. 4 is a top view of the bracket and the motor in embodiment 1;

fig. 5 is a rear view of the bracket and the motor in embodiment 1;

fig. 6 is a schematic structural view of the bracket in embodiment 1;

fig. 7 is a schematic structural view of the bracket and the motor in comparative example 1;

fig. 8 is a front view of the bracket and the motor in comparative example 1;

FIG. 9 is a schematic structural view of the stent of comparative example 1;

fig. 10 is a comparative diagram of fan vibrations of example 1 and comparative example 1, in which solid line portions and dotted line portions in the diagram correspond to the axial flow fans of example 1 and comparative example 1, respectively;

wherein: 1. a bracket; 11. a holder main body; 12. a first mounting portion; 13. a first transition portion; 14. an installation area; 15. a bending region; 16. a first transition zone; 17. a second transition zone;

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

3. a screw;

4. a nut;

5. an impeller;

6. an air guide ring; 61. a cylinder; 62. a support base;

7. a mesh enclosure;

8. a mounting ring;

1', B brackets.

Description of the embodiments

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.

Examples

An axial flow fan comprises a motor 2, an impeller 5, a fixing mechanism and a net cover 7.

Referring to fig. 5, the motor 2 has a motor housing including a housing 21, a plurality of fins 22, and a plurality of sets of clamp arm assemblies, the housing 21 being in the shape of a ring, the plurality of fins 22 being enclosed on the outer peripheral side of the housing 21 and extending radially outwardly of the housing 21, the plurality of sets of clamp arm assemblies being disposed at intervals on the outer peripheral side of the housing 21, each set of clamp arm assemblies including two clamp arms 23, one ends of the two clamp arms 23 remote from the housing 21 being bent toward each other and enclosing a T-shaped groove 25. Wherein, the lengths of the plurality of fins 22 and the plurality of groups of clamping arms 23 along the radial direction of the shell 21 are equal, and the ends of the plurality of fins 22 far away from the shell 21 enclose an outer circumference 24.

The impeller 5 is mounted on the motor 2 and is rotatable about the axis of the motor shaft by the motor 2, and the structure of the impeller 5 is not particularly limited with reference to the prior art.

Referring to fig. 1 and 2, the fixing mechanism includes a wind guide ring 6 provided at the outer peripheral side of the motor 2 and a plurality of brackets 1. The air guide ring 6 comprises a cylinder 61 coaxial with a motor shaft (not shown in the figure) and a supporting seat 62 connected to the air inlet end of the cylinder 61, wherein a through groove is formed in the middle part of the supporting seat 62, and the motor 2 is positioned in the through groove. The plurality of brackets 1 are arranged at intervals in turn around the circumference of the motor housing, and preferably, the number of the brackets 1 is 3-6 and the brackets are arranged at equal intervals. In this embodiment, the number of the brackets 1 is 4.

Referring to fig. 3 to 5, each bracket 1 includes a bracket body 11, and a first connecting portion and a second connecting portion at both ends of the bracket body 11, wherein the first connecting portion is bent in a direction away from or near the wind guiding ring 6 and is connected to the motor housing, in this embodiment, the first connecting portion is bent in a direction near the wind guiding ring 6, and an outer side surface and an inner side surface of the first connecting portion are coplanar with the outer side surface and the inner side surface of the bracket body 11, respectively. The second connecting portion is bent in a direction approaching the wind guide ring 6 and is connected to the supporting base 62. The extending direction of the holder main body 11 is tangential to the outer circumference 24 of the motor housing, and the ratio of the width thereof to the length of the motor housing in the axial direction thereof is less than or equal to 1/3. Further, the ratio of the width of the bracket main body 11 to the length of the motor housing in the axial direction thereof is k, and k is 1/6.ltoreq.k.ltoreq.1/4.

Since the tangential force output from the motor 2 is parallel to the extending direction of the bracket body 11, the forces generated after the movement of the fan rotor system can cancel out some components on the bracket 1, so that the fan vibration is reduced. The stability of the connection of the bracket 1 and the motor housing is ensured by the design of the first connecting part, and the width of the bracket main body 11 is reduced, thereby reducing the material cost of the bracket.

Referring to fig. 4 and 6, the first connection portion and the bracket body 11 are integrally formed, the first connection portion includes a first transition portion 13 and a first mounting portion 12, which are arc-shaped, the first transition portion 13 is located between the first mounting portion 12 and the bracket body 11, an extending direction of the first mounting portion 12 is substantially parallel to an axial line of the motor shaft and substantially perpendicular to an extending direction of the bracket body 11, and the first mounting portion 12 is connected to the motor housing through one or more mounting members.

Specifically, the mounting members are a screw 3 and a nut 4, one end of the screw 3 is a nut end, which is located in the T-shaped groove 25, the other end passes through the first mounting portion 12, and the nut 4 which abuts against the first mounting portion 12 is screwed on the outer wall. The first installation part 12 is fixedly connected to the T-shaped groove 25 through the screw 3 and the nut 4, the extending direction of the T-shaped groove 25 is parallel to the axial direction of the motor shaft, and the position of the axial flow fan impeller 5 can be adjusted on the premise of not changing the size of the bracket 1 by adjusting the relative position of the first installation part 12 and the T-shaped groove 25, so that the fan performance is optimal and very convenient.

Referring to fig. 3 and 6, the second connection part and the bracket body 11 are integrally formed, the second connection part includes a second mounting portion and a second transition portion, the second transition portion is located between the second mounting portion and the bracket body 11, an outer side surface and an inner side surface of the second transition portion are coplanar with the outer side surface and the inner side surface of the bracket body 11, respectively, and the second transition portion includes a first transition region 16 which is arc-shaped and is connected to the bracket body 11, and a second transition region 17 which is connected to the second mounting portion; the second mounting portion comprises a bending region 15 connected to the second transition region 17 and a mounting region 14 attached to the end face of the support base 62 facing away from the cylinder 61, the mounting region 14 is fixedly connected to the support base 62 by a mounting member, preferably a screw 3 and a nut 4, one end of the screw 3 passes through the mounting region 14 and the support base 62, and the outer wall is in threaded connection with the nut 4.

The mesh enclosure 7 is disposed at the air outlet end of the cylinder 61, and the structure thereof is also referred to the prior art, and the present utility model is not particularly limited.

Comparative example 1

The axial flow fan in this comparative example is substantially the same as that of embodiment 1, except that: the bracket and the axial flow fan further comprise a mounting ring 8, see in particular fig. 7 to 9. For convenience of distinction, the bracket in this comparative example will be referred to as a B bracket 1' having one end mounted on the mounting ring 8 and the other end mounted on the support base 62, the mounting ring 8 being mounted on the motor housing.

As shown in fig. 10, the fan speed change vibration comparison results of example 1 and comparative example 1 show that the vibration speeds of both of them are in an ascending trend with the increase of the fan rotation speed, but the axial flow fan of example 1 is smaller in vibration speed at a high rotation speed (850 rpm or more) and better in stability.

In conclusion, the fixing mechanism of the application, especially the support 1, is simpler in structure, better in stability and lower in material cost, can be finished through cold forming, and is convenient to process. In addition, the support 1 of this application is more convenient for install, can be under the prerequisite of not changing support 1 size, the position of adjustment motor 2 and impeller 5 is in order to make fan performance reach the best state.

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 (12)

1. The utility model provides a fixed establishment of axial fan motor, includes the wind-guiding circle and a plurality of support that set up around motor housing's circumference interval in proper order of locating motor periphery side, its characterized in that: the bracket comprises a bracket main body, a first connecting part and a second connecting part which are connected with two ends of the bracket main body,

the first connecting part is bent towards the direction away from or close to the wind guide ring and is connected to the motor shell,

the second connecting part is bent towards the direction close to the wind guiding ring and is connected with the wind guiding ring,

the extending direction of the support main body is tangential to the peripheral circle of the motor housing, the outer side face and the inner side face of the first connecting part are respectively coplanar with the outer side face and the inner side face of the support main body, and the ratio of the width of the support main body to the length of the motor housing along the axial direction of the support main body is smaller than or equal to 1/3.

2. The securing mechanism as claimed in claim 1, wherein: the ratio of the width of the bracket main body to the length of the motor shell along the axial direction is k, and k is more than or equal to 1/6 and less than or equal to 1/4.

3. The securing mechanism as claimed in claim 1, wherein: the first connecting portion comprises a first mounting portion and a first arc-shaped transition portion, the first transition portion is located between the first mounting portion and the support main body, the extending direction of the first mounting portion is parallel to the axis of the motor shaft and perpendicular to the extending direction of the support main body, and the first mounting portion is connected to the motor housing through a mounting member.

4. The securing mechanism as claimed in claim 1, wherein: the motor shell comprises a circular shell, a plurality of fins and a plurality of groups of clamping arm assemblies, wherein the fins are arranged on the outer peripheral side of the shell in a surrounding mode and extend outwards along the radial direction of the shell, the groups of clamping arm assemblies are arranged on the outer peripheral side of the shell at intervals, the lengths of the fins and the groups of clamping arm assemblies along the radial direction of the shell are equal, and the fins are far away from the end portions of the shell to form the outer peripheral.

5. The securing mechanism as claimed in claim 4, wherein: each group of clamping arm assembly comprises two clamping arms, one ends of the two clamping arms, which are far away from the shell, are bent in opposite directions and enclose a T-shaped groove, and the first connecting part is installed on the T-shaped groove through an installation component.

6. The securing mechanism as claimed in claim 5, wherein: the extending direction of the T-shaped groove is parallel to the axial direction of the motor shaft.

7. The securing mechanism as claimed in claim 1, wherein: the air guide ring comprises a cylinder body and a supporting seat connected to the air inlet end of the cylinder body, a through groove is formed in the middle of the supporting seat, the motor is located in the through groove, and the second connecting portion is connected to the end face, away from the cylinder body, of the supporting seat.

8. The securing mechanism as claimed in claim 7, wherein: the second connecting portion comprises a second mounting portion and a second transition portion, the second transition portion is located between the second mounting portion and the support body, the second transition portion comprises a first transition area which is arc-shaped and connected to the support body and a second transition area which is connected to the second mounting portion, the second mounting portion comprises a bending area connected to the second transition area and a mounting area which is attached to the end face, away from the support seat, of the support seat, and the mounting area is connected to the support seat through a mounting member.

9. The securing mechanism according to any one of claims 3, 5, 8, wherein: the mounting members are screws and nuts.

10. The securing mechanism as claimed in claim 1, wherein: the bracket main body, the first connecting part and the second connecting part are integrally formed.

11. The securing mechanism as claimed in claim 1, wherein: the number of the brackets is 3-6.

12. The utility model provides an axial fan, includes the motor, installs on the motor and can rotate around the axial lead of motor shaft impeller, fixed establishment and screen panel, its characterized in that: the fixing mechanism is the fixing mechanism according to any one of claims 1 to 11, and the mesh enclosure is arranged at the air outlet end of the air guide ring of the fixing mechanism.