CN214366796U

CN214366796U - Axial flow fan

Info

Publication number: CN214366796U
Application number: CN202022871177.2U
Authority: CN
Inventors: 刘渊; 张嵩海
Original assignee: Rosenberg Ventilations & Energy Systems Shanghai Co ltd
Current assignee: Rosenberg Ventilations & Energy Systems Shanghai Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-10-08
Anticipated expiration: 2030-12-02

Abstract

The utility model provides an axial fan, including the panel, connect in support frame on the panel, be fixed in motor on the support frame with locate flabellum on the motor, it is just right to be equipped with on the panel the opening of motor and flabellum, the motor includes the end cover, locates motor shaft in the end cover, the cover is located stator on the motor shaft and the outer rotor shell that the motor shaft links to each other, the outer rotor shell can be relative the end cover is rotatory, its characterized in that: the water retaining ring can cover the gap between the outer rotor shell and the end cover, and is connected with the outer rotor shell. The water retaining ring can prevent water from permeating into the motor from a gap between the outer rotor shell and the end cover, and improves the use performance in a high-humidity and rainy environment.

Description

Axial flow fan

Technical Field

The utility model relates to a fan technical field especially relates to an axial fan.

Background

The axial flow fan without the volute has small energy loss because no barrier is arranged around the fan blades, and the output air quantity can be improved to a great extent. However, such a fan still has the following drawbacks: when the axial flow fan is used outdoors, rainwater easily flows into the motor along a gap between the outer rotor shell of the motor and the end cover, so that the motor is damaged by short circuit.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an axial fan that waterproof performance is high is provided.

The utility model discloses a this technical problem is solved to following mode:

the utility model provides an axial fan, include the panel, connect in support frame on the panel, be fixed in motor on the support frame with locate flabellum on the motor, be equipped with on the panel just right the opening of motor and flabellum, the motor includes the end cover, locates motor shaft in the end cover, the cover is located stator on the motor shaft and the outer rotor shell that the motor shaft links to each other, the outer rotor shell can be relative the end cover is rotatory, its characterized in that: the water retaining ring can cover the gap between the outer rotor shell and the end cover, and is connected with the outer rotor shell.

The water retaining ring can prevent water from permeating into the motor from a gap between the outer rotor shell and the end cover, and improves the use performance in a high-humidity and rainy environment.

As a preferred embodiment of the present invention, the edge of the water retaining ring extends to be substantially flush with the end cap to completely block the gap between the outer rotor shell and the end cap.

As a preferred embodiment of the present invention, the water retaining ring is fixed to the flange at the edge of the outer rotor casing mouth.

As a preferred embodiment of the present invention, a labyrinth gap is provided on the opposite surfaces of the outer rotor case and the end cover. This labyrinth clearance can play the effect that blocks water, reinforcing waterproof performance.

As a preferred embodiment of the present invention, the supporting frame is composed of a fixing ring and four supporting beams, one end of each supporting beam is fixed to four ends of the panel, the other end of each supporting beam is connected to the fixing ring in a converging manner, and the motor is fixed to the fixing ring.

As a preferred embodiment of the present invention, the opening of the panel is provided with an annular air guide sleeve, and the motor and the fan blades are located in the air guide sleeve. The wind power can be concentrated and the air quantity can be increased under the bypass effect of the air guide sleeve.

The axial flow fan has the main advantages that the waterproof structure is arranged between the outer rotor shell and the end cover of the motor, so that the waterproof performance of the motor is improved, and the axial flow fan can be better suitable for high-humidity and rainy environments.

Drawings

The invention will be further described with reference to the accompanying drawings:

fig. 1 is a perspective view of the present invention;

fig. 2 is a perspective view of the motor of the present invention;

fig. 3 is a cross-sectional view of the motor of the present invention;

100-panel, 110-opening, 200-dome, 300-support frame, 310-fixing ring, 320-support beam, 400-motor, 410-end cover, 420-motor shaft, 440-outer rotor shell, 450-fixing lug, 460-flange plate, 500-fan blade, 600-waterproof structure, 610-labyrinth gap, 620-water retaining ring.

Detailed Description

The invention is further illustrated below by means of specific examples:

as shown in fig. 1, an axial flow fan includes a panel 100, a nacelle 200, a support frame 300, a motor 400, and fan blades 500.

The faceplate 100 is square with a circular opening 110 at its center. The dome 200 is ring-shaped, is mounted at the edge of the opening 110 of the panel 100, and extends vertically rearward from the edge of the opening 110.

The supporting frame 300 is composed of a fixing ring 310 and four curved supporting beams 320, one end of each supporting beam 320 is fixed to four ends of the rear surface of the panel 100, and the other end is connected to the fixing ring 310 in a gathering manner, so that the fixing ring 310 is arranged in a suspended manner behind the panel 100, and the fixing ring 310 and the opening 110 are kept concentrically arranged.

Referring to fig. 2 and 3, the motor 400 includes an end cover 410, a motor shaft 420 integrally provided on the end cover 410, a stator sleeved on the motor shaft 420, and an outer rotor case 440 connected to the motor shaft 420.

The outer rotor case 440 has a cup shape, which can enclose the stator and the motor shaft 420 therein, with a gap between a mouth of the outer rotor case 440 and an inner side surface of the end cap 410, so that the outer rotor case 440 can rotate relative to the end cap 410 by a magnetic field force of the stator. The outer rotor case 440 is provided with a plurality of fixing lugs 450 along a circumferential direction, and the fan blades 500 are coupled to the fixing lugs 450.

Referring to fig. 1 and 2, the fixing ring 310 is coupled to the outer side surface of the end cap 410 by bolts. Thereby fixing the motor 400 to the support frame 300.

The motor 400 and the fan blade 500 are both positioned in the air guide sleeve 200, and can play a role in concentrating wind power and increasing air volume under the bypass effect of the air guide sleeve 200.

Referring to fig. 2 and 3, a waterproof structure 600 is provided at a gap between the outer rotor case 440 and the end cap 410.

The waterproof structure 600 includes a labyrinth gap 610 disposed on the opposite surfaces of the outer rotor case 440 and the end cap 410, and the labyrinth gap 610 can block water, so as to prevent water from infiltrating into the motor from the gap between the outer rotor case 440 and the end cap 410, which may cause short circuit damage of the motor.

The waterproof structure 600 further includes a water-retaining ring 620. The water retaining ring 620 is fixed to a flange 460 extending outward from the edge of the mouth of the outer rotor case 440 by bolts. The edge of the water retaining ring 620 is substantially flush with the end cover 410, and can cover the gap between the end cover 410 and the outer rotor case 440 to further improve the waterproof performance.

The axial flow fan has the advantages that the waterproof structure is arranged between the outer rotor shell 440 and the end cover 410 of the motor 400, so that the waterproof performance of the motor 400 is improved, and the axial flow fan can be better suitable for high-humidity and rainy environments.

However, those skilled in the art should realize that the above embodiments are only for illustrative purposes and are not to be used as limitations of the present invention, and that changes and modifications to the above embodiments are intended to fall within the scope of the appended claims, as long as they fall within the true spirit of the present invention.

Claims

1. The utility model provides an axial fan, include panel (100), connect in support frame (300) on panel (100), be fixed in motor (400) on support frame (300) with locate fan blade (500) on motor (400), it is just right to be equipped with on panel (100) the opening of motor (400) and fan blade (500), motor (400) include end cover (410), locate motor shaft (420) in end cover (410), the cover is located stator on motor shaft (420) and outer rotor shell (440) that motor shaft (420) link to each other, outer rotor shell (440) can be relative end cover (410) are rotatory, its characterized in that: the rotor cover further comprises a water retaining ring (620) capable of shielding a gap between the outer rotor shell (440) and the end cover (410), wherein the water retaining ring (620) is connected with the outer rotor shell (440).

2. The axial flow fan according to claim 1, wherein: the edge of the water retaining ring (620) extends to be substantially flush with the end cap (410).

3. The axial flow fan according to claim 2, wherein: the water retaining ring (620) is fixed on a flange (460) at the edge of the opening of the outer rotor shell (440).

4. The axial flow fan according to claim 1, wherein: labyrinth gaps (610) are provided on opposing surfaces of the outer rotor shell (440) and end cap (410).

5. The axial flow fan according to any one of claims 1 to 4, wherein: the support frame (300) comprises a fixed ring (310) and four supporting beams (320), one end of each supporting beam (320) is fixed with four end portions of the panel (100), the other ends of the supporting beams are connected to the fixed ring (310) in a gathering mode, and the motor (400) is fixed to the fixed ring (310).

6. The axial flow fan according to claim 5, wherein: an annular air guide sleeve (200) is arranged at the opening of the panel (100), and the motor (400) and the fan blades (500) are located in the air guide sleeve (200).