WO2015066989A1

WO2015066989A1 - Fan structure

Info

Publication number: WO2015066989A1
Application number: PCT/CN2014/072708
Authority: WO
Inventors: 付桂文; 王雄程
Original assignee: 中山大洋电机制造有限公司
Priority date: 2013-11-06
Filing date: 2014-02-28
Publication date: 2015-05-14
Also published as: CN203604223U

Abstract

Disclosed is a fan structure comprising a fan housing (1), a mounting support (2), an outer rotor electric motor (3), a sleeve (4) and several vanes (5), wherein a cavity (11) opens out in the middle of the fan housing (1) and an air inlet (111) and an air outlet (112) are formed at two ends of the cavity (11), the outer rotor electric motor (3) is mounted inside the cavity (11) of the fan housing (1) by means of the mounting support (2), the sleeve (4) is nested and mounted on the outside of the outer rotor electric motor (3), the several vanes (5) are mounted on an outer surface of the sleeve (4), and the sleeve (4) is a frusto-conical sleeve narrow at the front and wide at the back. The structure is simple, a great quantity of air is blown, static pressure is great, efficiency is high and noise is low.

Description

Fan structure

Technical field:

The utility model relates to a fan structure.

Background technique:

The existing fans mainly include axial flow fans and centrifugal fans, but the overall efficiency of axial flow fans and centrifugal fans is relatively low, which cannot meet the development requirements of customers. The axial flow fan is characterized by a large air volume, but the static pressure is small; and the centrifugal fan is characterized by a small air volume and a large static pressure. Due to the increasing requirements of customers, higher requirements are placed on the performance of the wind turbine.

Summary of the invention:

The purpose of the utility model is to provide a fan structure, which has a single cylinder, a large air volume, a large static pressure, high efficiency and low noise.

The object of the present invention is achieved by the following technical solutions.

The utility model relates to a fan structure, which comprises a fan shell, a mounting bracket, an outer rotor motor, a sleeve and a plurality of blades, a cavity is formed in the middle of the fan shell, and an air inlet and an air outlet are formed at both ends of the cavity, and are installed by The bracket mounts the outer rotor motor inside the cavity of the fan casing, and the sleeve is nested outside the outer rotor motor, and a plurality of blades are mounted on the outer surface of the sleeve, the sleeve being a front narrow rear width Round table sleeve.

The outer side of the blade described above is provided with a ring.

The outer rotor motor described above is provided with a mounting flange on the outside, a cavity is opened in the middle of the sleeve, the inner wall of the cavity protrudes from the mounting disc, and the outer rotor motor extends into the cavity, through the mounting disc and the mounting flange Fit the sleeves nested outside the outer rotor motor.

The above-mentioned mounting bracket is provided with a plurality of flow guiding blocks.

The air inlet and the fan casing of the cavity described above are provided with a flow guiding flange.

The blades described above are inclined to the axial flow direction and the centrifugal direction of the sleeve.

The outer rotor motor described above includes a motor body portion and a controller portion, wherein the motor body portion includes a stator assembly, an outer rotor assembly, a rotating shaft and a base, and the controller portion includes a control box and a control circuit board integrated with the electronic device. Compared with the prior art, the utility model has the following effects: 1) The outer rotor motor is installed in the cavity of the fan casing through the mounting bracket, and the sleeve is nested and installed outside the outer rotor motor on the outer surface of the sleeve A plurality of blades are mounted on the sleeve, the sleeve is a front narrow and wide wide truncated cone sleeve, and the front narrow and wide wide truncated cone sleeve is a combination of the axial flow fan structure and the centrifugal fan structure, and the structure is single and air volume. Large, static pressure, high efficiency, low noise, to meet the increasing requirements of customers; 2) The outer side of the fan blade is equipped with a ring, the ring can increase the pulling force between the blades, avoiding the blade being loosened due to high-speed rotation 3) The outer rotor motor extends into the cavity, and the sleeve is nested outside the outer rotor motor through the installation disc and the mounting flange. The structure is simple, easy to install, and reliable; 4) setting on the mounting bracket There are a number of diversion blocks, and a diversion flange is arranged on the air inlet of the cavity and the fan casing, which can improve the flow of the wind flow in the fan casing, increase the air volume and reduce the noise; 5) the blade tilt In the axial flow direction and the centrifugal direction of the sleeve, when the wind flow in the fan casing flows through the wind vane, the wind vane can cause the wind flow to form a wind flow in the direction of the inclined axial flow and the centrifugal direction, compared to the conventional simple axial flow direction. Or a simple centrifugal flow of wind, which will be larger and the static pressure will be greater.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a perspective view of an angle of the present invention;

Figure 2 is a perspective view of another angle of the present invention;

Figure 3 is an exploded view of the utility model;

Figure 4 is a left side view of the utility model;

Figure 5 is a cross-sectional view taken along line A-A of Figure 4;

Figure 6 is an exploded view of the outer rotor motor of the present invention;

Figure 7 is a cross-sectional view showing the structure of the outer rotor motor of the present invention.

detailed description:

The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.

As shown in FIG. 1 to FIG. 7 , the utility model relates to a fan structure, which comprises a fan casing 1 , a mounting bracket 2 , an outer rotor motor 3 , a sleeve 4 and a plurality of blades 5 , and the fan casing 1 is opened in the middle. There is a cavity 1 1 and an air inlet 1 11 and an air outlet 112 are formed at both ends of the cavity 11 through the mounting bracket 2; the outer rotor motor 3 Installed in the cavity 1 1 of the fan casing 1, the sleeve 4 is nested outside the outer rotor motor 3, and a plurality of blades 5 are mounted on the outer surface of the sleeve 4, and the sleeve 4 is a front narrow rear width Round table sleeve.

A ring 6 is placed on the outer side of the blade 5.

A mounting flange 7 is disposed outside the outer rotor motor 3, and a cavity 41 is opened in the middle of the sleeve 4. The inner wall of the cavity 41 protrudes from the mounting disk 42, and the outer rotor motor 3 extends into the cavity 41 through the mounting disk. 42 cooperates with the mounting flange 7 to nest the sleeve 4 outside the outer rotor motor 3.

The guide bracket 2 is provided with a plurality of flow guiding blocks 21.

A flow guiding flange 12 is provided on the air inlet 1 1 1 of the cavity 1 1 and on the fan casing 1.

The blade 5 is inclined to the axial flow direction A1 of the sleeve 4 and the centrifugal direction A2.

The outer rotor motor 3 includes a motor body portion and a controller portion, wherein the motor body portion includes a stator assembly 31, an outer rotor assembly 32, a rotating shaft 33, and a base 34, and the controller portion includes a control box 35 and a control circuit board 36 integrated with electronic components. .

The principle of the utility model is: the outer rotor motor 3 is mounted in the cavity 1 1 of the fan casing 1 through the mounting bracket 2, and the sleeve 4 is nested outside the outer rotor motor 3 on the outer surface of the sleeve 4 A plurality of blades 5 are mounted, and the sleeve 4 is a truncated cone having a front narrow and a wide width. When the wind flow in the fan casing 1 flows from the blades 5, the blades 5 can cause the wind flow to form a slant axial flow direction. The air flow in A1 and centrifugal direction A2, the structure is simple, the air volume is large, the static pressure is large, the efficiency is high, and the noise is small.

Claims

Rights request

1. A fan structure comprising a fan casing (1), a mounting bracket (2), an outer rotor motor (3), a sleeve (4) and a plurality of blades (5), in the middle of the fan casing (1) A cavity (11) is opened and an air inlet (111) and an air outlet (112) are formed at both ends of the cavity (11), and the outer rotor motor (3) is mounted on the fan casing through the mounting bracket (2) ( Inside the cavity (11), the sleeve ( ⁴ ) is nested outside the outer rotor motor (3), and a plurality of blades (5) are mounted on the outer surface of the sleeve (4), characterized in that: The sleeve (4) is a truncated cone that is narrow and wide at the front.

2. A fan structure according to claim 1, characterized in that a ring (6) is fitted on the outer side of the blade (5).

3. A fan structure according to claim 1 or 2, characterized in that: a mounting flange ( ⁷ ) is arranged outside the outer rotor motor (3), and a cavity (41) is opened in the middle of the sleeve ( ⁴ ). The inner wall of the cavity (41) protrudes from the mounting disc (42), and the outer rotor motor (3) projects into the cavity (41), and the sleeve is fitted through the mounting disc ( ⁴² ) and the mounting flange (7). (4) Nested outside the outer rotor motor (3).

4. A fan structure according to claim 3, characterized in that: the mounting bracket (2) is provided with a plurality of flow guiding blocks (21).

5. A fan structure according to claim 1 or 2, characterized in that: a flow guiding flange (U) is arranged on the air inlet (111) of the cavity (11) and the fan casing (1). .

6, on a fan structure according to claim 1 or claim 2, wherein: said fan (5) inclined with respect to the sleeve ⁽⁴⁾ in the axial direction (A1) and the centrifugal direction (A ^2).

7. A fan structure according to claim 1 or 2, wherein: said outer rotor motor (3) comprises a motor body portion and a controller portion, wherein the motor body portion comprises a stator assembly

(31), an outer rotor assembly (32), a rotating shaft (33) and a base (34), the controller portion includes a control box (35) and a control circuit board (36) integrated with electronic components.