CN215805311U

CN215805311U - Axial flow fan

Info

Publication number: CN215805311U
Application number: CN202121966306.4U
Authority: CN
Inventors: 邵熙芳; 潘勇生; 袁峥; 田井呈; 黄厚佳
Original assignee: Guangdong Panhu Power Technology Co ltd
Current assignee: Guangdong Panhu Power Technology Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-02-11
Anticipated expiration: 2031-08-20

Abstract

The utility model provides an axial flow fan, belongs to the technical field of fans, and solves the problem that the fan in the prior art cannot accurately regulate speed. The utility model comprises a shell, wherein an impeller and an axial magnetic field motor capable of driving the impeller to rotate are arranged in the shell, and the axial magnetic field motor is also connected with a controller capable of regulating and controlling the rotating speed of the axial magnetic field motor. The utility model directly drives the impeller to rotate by adopting the axial magnetic field motor, reduces the loss in the transmission process, improves the efficiency, simplifies the whole structure, automatically controls the motor to regulate the speed or manually regulates the speed by integrating the frequency conversion speed regulation function in the controller and matching with various external sensor signals, and has simple, accurate and smooth speed regulation; by integrating the controller on the axial field motor, efficient use of space can be achieved.

Description

Axial flow fan

Technical Field

The utility model belongs to the technical field of fans, and particularly relates to an axial flow fan.

Background

Fans are an important component of environmental control systems. In many applications, a large number of fans are required to work continuously or for a long time, and the consumed electric quantity is very large. The efficiency of the fan is improved and researched, and the fan has great social and economic benefits. At present, the driving motor adopted by most fans is an alternating current asynchronous motor, and has the characteristics of good reliability, low cost, low efficiency and difficult speed regulation.

Asynchronous motors have low efficiency, low power density, and large size and weight. Therefore, the fan blades cannot be directly driven due to the limitation of volume and weight in case of high power, and need to be driven in a belt transmission mode, so that transmission efficiency loss exists and the structure is complex.

And the asynchronous motor is difficult to regulate the speed due to the characteristics of the asynchronous motor, so the speed is not regulated generally during direct driving, and a link of increasing belt wheel transmission is adopted for regulating the speed. Although the speed can be adjusted by changing the transmission ratio of the belt wheel, the speed cannot be adjusted accurately and smoothly to flexibly adapt to the changing application scene.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an axial flow fan convenient for accurate speed regulation, aiming at the problems in the prior art.

The purpose of the utility model can be realized by the following technical scheme: the axial flow fan comprises a shell, wherein an impeller and an axial magnetic field motor capable of driving the impeller to rotate are arranged in the shell, and the axial magnetic field motor is further connected with a controller capable of regulating and controlling the rotating speed of the axial magnetic field motor.

The axial magnetic field motor has high power density, and compared with the existing asynchronous motor, the axial magnetic field motor has obvious weight and volume advantages under the same power, can directly drive the impeller, does not need to drive the impeller to work through belt wheel transmission, reduces the loss in the transmission process, improves the efficiency, simplifies the whole structure, reduces the production cost, and matches with various external sensor signals to automatically control the motor to regulate the speed or manually regulate the speed through integrating the variable frequency speed regulation function in the controller, and the speed regulation is simple and accurate and smooth.

In the above axial flow fan, the controller is integrated on a side of the axial magnetic field motor away from the impeller.

Because the axial magnetic field motor is adopted, the axial size is greatly shortened, and therefore the controller is integrated on the axial magnetic field motor, and the efficient utilization of space can be realized.

In the above axial flow fan, as another aspect, the controller is disposed outside the casing and connected to the casing through a cable. The controller may be disposed outside the housing and connected to the housing by a cable.

In the above axial flow fan, the outer diameter of the axial magnetic field motor is not greater than the outer diameter of the impeller hub. The outer diameter of the axial magnetic field motor is not larger than the outer diameter of the impeller hub, so that the influence on the performance of the impeller is avoided.

In the above axial flow fan, a support structure for supporting and fixing the axial magnetic field motor is further provided in the housing. The axial magnetic field motor is fixed in the shell by arranging the supporting structure, so that the stability of the axial magnetic field motor is ensured.

In the above axial flow fan, the support structure includes a plurality of fixing members circumferentially disposed on the housing and a plurality of connecting members circumferentially disposed on the axial magnetic field motor, and the fixing members and the connecting members are fixedly connected. The connecting piece plays a role in connecting the fixing piece with the axial magnetic field motor.

In the above axial flow fan, a plurality of fixing holes for connecting with the connecting piece are circumferentially arranged on the outer side of the axial magnetic field motor. The fixing hole is formed in the outer side of the axial magnetic field motor, so that the connecting piece is conveniently connected with the axial magnetic field motor.

In the above axial flow fan, the outer side of the casing is provided with a plurality of fixing plates, a fastening piece is arranged between the fixing piece and the fixing plate, and the fastening piece penetrates through the casing to fixedly connect the fixing piece and the fixing plate. Through set up a plurality of fixed plates in the casing outside, strengthen the stability that mounting and casing are connected.

In the above axial flow fan, a protection net for protecting the impeller is further provided at one side of the casing. The impeller is protected by arranging the protection net, and the impeller is prevented from being damaged by accidental contact with the outside.

Compared with the prior art, the impeller is directly driven to rotate by adopting the axial magnetic field motor, so that the loss in the transmission process is reduced, the efficiency is improved, the overall structure is simplified, the variable-frequency speed regulation function is integrated in the controller, the motor is automatically controlled to regulate the speed or manually regulated by matching with various external sensor signals, and the speed regulation is simple, accurate and smooth; by integrating the controller on the axial field motor, efficient use of space can be achieved.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is an exploded view of a portion of the structure of the present invention;

in the figure, 1, a housing; 2. an impeller; 3. an axial field motor; 31. a fixing hole; 4. a controller; 5. a support structure; 51. a fixing member; 52. a connecting member; 6. a fixing plate; 7. a fastener; 8. and (4) a protection net.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the present invention comprises a housing 1, wherein an impeller 2 and an axial magnetic field motor 3 capable of driving the impeller 2 to rotate are arranged in the housing 1, and the axial magnetic field motor 3 is further connected with a controller 4 capable of regulating and controlling the rotation speed thereof.

The axial magnetic field motor 3 has high power density, has obvious weight and volume advantages under the same power compared with the existing asynchronous motor, can directly drive the impeller 2, does not need to drive the impeller 2 to work through belt wheel transmission, reduces the loss in the transmission process, improves the efficiency and simplifies the whole structure. The controller 4 is internally integrated with a frequency conversion speed regulation function, the motor can be automatically controlled to regulate the speed through various external sensor signals, the speed can also be manually regulated, and the speed regulation is simple, accurate and smooth.

The controller 4 is integrated on one side of the axial magnetic field motor 3 far away from the impeller 2. Because the axial magnetic field motor 3 is adopted, the axial size is greatly shortened, and therefore the controller 4 is integrated on the axial magnetic field motor 3, and the efficient utilization of space can be realized.

The outer diameter of the axial magnetic field motor 3 is not more than the outer diameter of the hub of the impeller 2. The outer diameter of the axial magnetic field motor 3 is not larger than the outer diameter of the hub of the impeller 2, so that the influence on the performance of the impeller 2 is avoided.

And a supporting structure 5 for supporting and fixing the axial magnetic field motor 3 is also arranged in the shell 1. The axial magnetic field motor 3 is fixed in the shell 1 by arranging the supporting structure 5, so that the stability of the axial magnetic field motor is ensured.

The supporting structure 5 comprises a plurality of fixing pieces 51 circumferentially arranged on the casing 1 and a plurality of connecting pieces 52 circumferentially arranged on the axial magnetic field motor 3, wherein the fixing pieces 51 and the connecting pieces 52 are fixedly connected. The connecting member 52 functions to connect the fixing member 51 and the axial field motor 3.

A plurality of fixing holes 31 used for being connected with the connecting piece 52 are formed in the outer circumferential direction of the axial magnetic field motor 3. The connection of the connecting piece 52 to the axial field motor 3 is facilitated by providing the fixing hole 31 at the outer side of the axial field motor 3.

The outer side of the shell 1 is provided with a plurality of fixing plates 6, a fastening piece 7 is arranged between the fixing piece 51 and the fixing plates 6, and the fastening piece 7 penetrates through the shell 1 to fixedly connect the fixing piece 51 and the fixing plates 6. By providing a plurality of fixing plates 6 outside the housing 1, the stability of the connection of the fixing member 51 to the housing 1 is enhanced.

And a protection net 8 for protecting the impeller 2 is also arranged on one side of the shell 1. The impeller 2 is protected by the protection net 8, and the impeller is prevented from being damaged by accidental contact with the outside.

The working principle of the utility model is as follows: the axial magnetic field motor 3 drives the impeller 2 to rotate, and the controller 4 controls the axial magnetic field motor 3 to regulate the speed.

The utility model directly drives the impeller 2 to rotate by adopting the axial magnetic field motor 3, reduces the loss in the transmission process, improves the efficiency, simplifies the whole structure, automatically controls the motor to regulate the speed or manually regulate the speed by integrating the frequency conversion speed regulation function in the controller 4 and matching with various external sensor signals, and has simple speed regulation, precision and smoothness; by integrating the controller 4 on the axial field motor 3, an efficient use of space can be achieved.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides an axial fan which characterized in that: the device comprises a shell (1), wherein an impeller (2) and an axial magnetic field motor (3) capable of driving the impeller (2) to rotate are arranged in the shell (1), and the axial magnetic field motor (3) is further connected with a controller (4) capable of regulating and controlling the rotating speed of the axial magnetic field motor.

2. The axial flow fan of claim 1, wherein: the controller (4) is integrated on one side of the axial magnetic field motor (3) far away from the impeller (2).

3. The axial flow fan of claim 1, wherein: the controller (4) is arranged on the outer side of the shell (1) and is connected through a cable.

4. The axial fan of claim 1, 2 or 3, wherein: the outer diameter of the axial magnetic field motor (3) is not more than the outer diameter of the hub of the impeller (2).

5. The axial fan of claim 1, 2 or 3, wherein: and a supporting structure (5) for supporting and fixing the axial magnetic field motor (3) is also arranged in the shell (1).

6. The axial flow fan of claim 5, wherein: the supporting structure (5) comprises a plurality of fixing pieces (51) arranged on the shell (1) in the circumferential direction and a plurality of connecting pieces (52) arranged on the axial magnetic field motor (3) in the circumferential direction, wherein the fixing pieces (51) are fixedly connected with the connecting pieces (52).

7. The axial flow fan of claim 6, wherein: and a plurality of fixing holes (31) used for being connected with the connecting piece (52) are formed in the circumferential direction of the outer side of the axial magnetic field motor (3).

8. The axial flow fan of claim 6, wherein: the casing (1) outside be equipped with a plurality of fixed plates (6), mounting (51) and fixed plate (6) between be equipped with fastener (7), fastener (7) run through casing (1) with mounting (51) and fixed plate (6) fixed connection.

9. The axial fan of claim 1, 2 or 3, wherein: and a protection net (8) for protecting the impeller (2) is also arranged on one side of the shell (1).