CN218151514U

CN218151514U - Axial flow fan

Info

Publication number: CN218151514U
Application number: CN202221240763.XU
Authority: CN
Inventors: 王小荣; 周红; 满超; 侯海臣
Original assignee: Chongqing General Industry Group Co Ltd
Current assignee: Chongqing General Industry Group Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-12-27
Anticipated expiration: 2032-05-23

Abstract

The utility model belongs to the technical field of ventilators, and particularly discloses an axial flow fan, which comprises a flow guide cover, an impeller, an air inlet shell, an integrated shell and a motor core; the impeller and the flow guide cover are arranged in the air inlet shell, the flow guide cover guides the flow of the gas, the motor core is arranged in an inner shell of the integrated shell, and the motor core is connected with the impeller; a motor front bearing and a motor rear bearing are respectively arranged on two sides of a rotor shaft of the motor core, and a motor front end cover and a motor rear end cover are respectively arranged on the motor front bearing and the motor rear bearing; the motor front end cover and the motor rear end cover are both positioned in the inner shell of the integrated shell; the motor rear end cover is fixed with the end part of the inner shell of the integrated shell through a connecting piece. Above-mentioned axial fan can solve the problem that the setting up of end cover can influence the inside flow field of ventilation blower among the current ventilation blower.

Description

Axial flow fan

Technical Field

The utility model belongs to the technical field of the ventilation blower, especially, relate to an axial flow fan.

Background

The axial flow fan consists of a flow guide cover, an impeller, an air inlet shell, an integrated shell (a motor shell, a fan shell and a fan rear guide vane), a motor core and an end cover, and the structural schematic diagram is shown in figure 3. The axial flow fan is characterized in that: 1) The motor shell, the fan shell and the fan rear guide vane are of an integrated structure, a fan rear guide vane hub is overlapped with the motor shell to form an inner shell of the integrated shell, and blades of the rear guide vane play a role in guiding flow and supporting a motor core at the same time; 2) The integrated shell is of a hollow structure and is used for placing a motor core; 3) The end caps connect the inner and outer shells of the integrated shell and also act to support the internal structure, as shown in FIG. 4; 4) The two sides of a rotor shaft in the motor core are connected with a motor rear end cover and a motor front end cover through a motor rear bearing and a motor front bearing, and the rotor shaft in the motor core is connected with an impeller to drive the impeller to rotate to do work. The end cover is arranged at the outlet position of the axial flow fan and used for supporting an internal structure, but the arrangement of the end cover can influence the flow field inside the ventilator.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an axial flow fan to the setting of end cover can influence the problem in the inside flow field of ventilation blower in solving current ventilation blower.

In order to achieve the above purpose, the technical scheme of the utility model is that: an axial flow fan comprises a flow guide cover, an impeller, an air inlet shell, an integrated shell and a motor core; the impeller and the flow guide cover are arranged in the air inlet shell, the flow guide cover guides the flow of the gas, the motor core is arranged in an inner shell of the integrated shell, and a rotor shaft of the motor core is connected with the impeller; a motor front bearing and a motor rear bearing are respectively arranged on two sides of a rotor shaft of the motor core, and a motor front end cover and a motor rear end cover are respectively arranged on the motor front bearing and the motor rear bearing; the motor front end cover and the motor rear end cover are both positioned in an inner shell of the integrated shell; the motor rear end cover is fixed with the end part of the inner shell of the integrated shell through a connecting piece.

Furthermore, one side of the motor core close to the motor rear bearing extends out of the inner shell of the integrated shell.

Further, the connecting piece adopts a bolt, a screw or a screw rod.

Further, the diameter of the front end cover of the motor is smaller than that of the rear end cover of the motor.

Furthermore, the end faces of the motor rear end cover and the inner shell of the integrated shell are provided with a plurality of corresponding threaded holes.

The beneficial effects of this technical scheme lie in: (1) according to the scheme, the motor rear end cover is fixed with the inner shell of the integrated shell, and the end cover in the background technology is omitted, so that the flow field in the inner shell of the integrated shell cannot be influenced, and the air flow loss at the outlet position of the axial flow fan is reduced. (2) The end cover is omitted, so that the whole weight of the axial flow fan is reduced, and the heat dissipation of the motor core is facilitated. (3) Because one side of the motor core close to the motor rear bearing extends out of the inner shell of the integrated shell, the length of the inner shell of the integrated shell is shortened, and the overall weight of the axial flow fan is reduced.

Drawings

Fig. 1 is a schematic structural view of a motor core part in an axial flow fan of the present invention;

fig. 2 is an assembly schematic view of an integrated shell and a rear end cover in the axial flow fan of the present invention;

FIG. 3 is a schematic structural diagram of an axial flow fan in the prior art;

fig. 4 is a schematic view of the assembly of the integrated housing and end cap.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the air inlet structure comprises an air inlet shell 1, a flow guide cover 2, an impeller 3, an integrated shell 4, a motor core 5, an end cover 6, a rotor shaft 7, an inner shell 8, a motor rear end cover 11, a motor front end cover 12, a motor rear bearing 9, a motor front bearing 10 and a connecting piece 13.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The examples are substantially as shown in figures 1 to 3: an axial flow fan comprises a flow guide cover 2, an impeller 3, an air inlet shell 1, an integrated shell 4 and a motor core 5; the impeller 3 and the flow guide cover 2 are both arranged in the air inlet shell 1, the flow guide cover 2 guides air, the motor core 5 is arranged in an inner shell 8 of the integrated shell 4, and a rotor shaft 7 of the motor core 5 is connected with the impeller 3; a motor front bearing 10 and a motor rear bearing 9 are respectively arranged on two sides of a rotor shaft 7 of the motor core 5, and a motor front end cover 12 and a motor rear end cover 11 are respectively arranged on the motor front bearing 10 and the motor rear bearing 9; the motor front end cover 12 and the motor rear end cover 11 are both positioned in the inner shell 8 of the integrated shell 4; as shown in fig. 2, the motor rear end cover 11 is fixed to an end of the inner housing 8 of the integrated housing 4 through a connecting member 13, specifically, the end surfaces of the motor rear end cover 11 and the inner housing 8 of the integrated housing 4 are respectively provided with a plurality of corresponding threaded holes, and the connecting member 13 is a bolt, a screw, or a screw rod. One side of the motor core 5 close to the motor rear bearing 9 extends out of an inner shell 8 of the integrated shell 4. The diameter of the motor front end cover 12 is smaller than that of the motor rear end cover 11.

According to the scheme, the motor rear end cover 11 is fixed with the inner shell 8 of the integrated shell 4, and the end cover 6 in the background technology is omitted, so that the flow field in the inner shell 8 of the integrated shell 4 cannot be influenced, and the airflow loss of the outlet position of the axial flow fan is reduced. The end cover 6 is not arranged, so that the whole weight of the axial flow fan is reduced, and the heat dissipation of the motor core 5 is facilitated. Because one side of the motor core 5 close to the motor rear bearing 9 extends out of the inner shell 8 of the integrated shell 4, the length of the inner shell 8 of the integrated shell 4 is reduced, and the overall weight of the axial flow fan is reduced.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only for the embodiment of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, so that those skilled in the art can know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the capability of applying the conventional experimental means before this date, and those skilled in the art can complete and implement the schemes in combination with their own capability, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. An axial flow fan comprises a flow guide cover (2), an impeller (3), an air inlet shell (1), an integrated shell (4) and a motor core (5); the impeller (3) and the air guide sleeve (2) are arranged in the air inlet shell (1), the air guide sleeve (2) guides air, the motor core (5) is arranged in an inner shell (8) of the integrated shell (4), and a rotor shaft (7) of the motor core (5) is connected with the impeller (3); the method is characterized in that: a motor front bearing (10) and a motor rear bearing (9) are respectively arranged on two sides of a rotor shaft (7) of the motor core (5), and a motor front end cover (12) and a motor rear end cover (11) are respectively arranged on the motor front bearing (10) and the motor rear bearing (9); the motor front end cover (12) and the motor rear end cover (11) are both positioned in the inner shell (8) of the integrated shell (4); the motor rear end cover (11) and the end part of the inner shell (8) of the integrated shell (4) are fixed through a connecting piece (13).

2. The axial flow fan of claim 1, wherein: one side of the motor core (5) close to the motor rear bearing (9) extends out of the inner shell (8) of the integrated shell (4).

3. The axial flow fan of claim 1, wherein: the connecting piece (13) adopts a bolt, a screw or a screw rod.

4. The axial flow fan of claim 1, wherein: the diameter of the motor front end cover (12) is smaller than that of the motor rear end cover (11).

5. The axial flow fan of claim 3, wherein: the end faces of the motor rear end cover (11) and the inner shell (8) of the integrated shell (4) are provided with a plurality of corresponding threaded holes.