CN215860863U

CN215860863U - High-efficient low noise multisection axial fan

Info

Publication number: CN215860863U
Application number: CN202121517201.0U
Authority: CN
Inventors: 李有怀; 陈俊; 孔飞
Original assignee: Jiangsu Boji Spraying Systems Holding Co ltd
Current assignee: Jiangsu Boji Spraying Systems Holding Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2022-02-18
Anticipated expiration: 2031-07-06

Abstract

The utility model discloses a high-efficiency low-noise multi-section axial flow fan, which comprises an air inlet protection plate, wherein the right side of the air inlet protection plate is fixedly connected with a first section shaft, the end part of the first section shaft, far away from the air inlet protection plate, is fixedly arranged with a second section shaft, and meanwhile, the bottom of the first section shaft is provided with a fixed seat; the left side of the third joint shaft is fixedly arranged with the second joint shaft, and one end of the third joint shaft, which is far away from the second joint shaft, is fixed with the air outlet device through a bolt; and the end part of the air outlet device is a fixed plate, and the right side of the fixed plate is welded and fixed with the air outlet box. According to the efficient low-noise axial flow fan, three groups of fan devices are combined together, and compared with the axial flow fan with a single fan, the sectional area of a motor of the fan in an air duct is greatly reduced; the air flowing at high speed is gradually pressurized in the three joint shafts of the fan, so that the wind speed is improved, the ejected airflow range is improved compared with the fan with the same motor power, and the noise is reduced.

Description

High-efficient low noise multisection axial fan

Technical Field

The utility model relates to the field of axial flow fans, in particular to a high-efficiency low-noise multi-section axial flow fan.

Background

The axial flow fan has very wide application, namely airflow in the same direction as the shaft of the fan blade, such as an electric fan, and an air conditioner external unit fan is an axial flow type running fan; the "axial flow" is so called because the gas flows parallel to the fan axis; axial flow fans are typically used in applications where flow requirements are high and pressure requirements are low; an axial fan fixes position and moves air; the axial flow fan mainly comprises a fan impeller and a casing, and is widely applied.

At present, the axial flow fan is basically combined by a single-section motor and fan blades; in the application occasions with high requirement on air supply range, the motor power with certain capacity is increased; this results in high project investment and high running cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficiency low-noise multi-section axial flow fan to solve the defects in the background technology.

In order to achieve the above object, there is provided a high-efficiency low-noise multi-section axial flow fan, comprising:

the right side of the air inlet protection plate is fixedly connected with the first joint shaft, the end part, far away from the air inlet protection plate, of the first joint shaft is fixedly arranged with the second joint shaft, and meanwhile, a fixing seat is installed at the bottom of the first joint shaft;

the left side of the third joint shaft is fixedly arranged with the second joint shaft, and one end of the third joint shaft, which is far away from the second joint shaft, is fixed with the air outlet device through a bolt;

the end part of the air outlet device is a fixed plate, the right side of the fixed plate is welded and fixed with the air outlet box, and the air outlet box is arranged in a hollow mode.

Preferably, the protection plate that entries includes collar, rib and fixed strip, and the inside of collar evenly is provided with six groups of ribs, and the distance between two sets of adjacent ribs equals that six groups of ribs are the concentric circles structure simultaneously.

Preferably, four groups of fixing strips are fixedly arranged on the inner wall of the mounting ring, the fixing strips and the ribs are fixed through welding, and meanwhile, the fixing strips are of a V-shaped structure made of stainless steel.

Preferably, the first section of axle includes left splice plate, first barrel, fixing base, first fan unit, right splice plate, location strip, mounting panel and fixed column, and the left side of first barrel sets up with left splice plate is fixed, and one side that left splice plate was kept away from to first barrel sets up with right splice plate is fixed, and the inner wall of first barrel sets up with the fixed column is fixed simultaneously, and the tip and the fixed setting of mounting panel of fixed column, the surface mounting of mounting panel has first fan unit.

Preferably, the second festival axle includes constant head tank, second barrel and second fan unit, and the constant head tank has been seted up in the left side of second barrel, and the right side fixed surface of right splice plate is provided with the location strip, and the location strip is pegged graft inside the constant head tank with the size looks adaptation of constant head tank, location strip, and the location strip is the arc setting, and second barrel internally mounted has second fan unit.

Preferably, the third joint shaft comprises a third cylinder and a third fan device, the third cylinder is internally provided with the third fan device, the third cylinder and the second cylinder are fixed through bolts, and the third fan device, the second fan device and the first fan device are horizontally arranged oppositely.

Preferably, the air outlet device comprises a fixed plate and an air outlet box, and the air outlet device and the third joint shaft are positioned and installed through a positioning strip and a positioning groove.

Compared with the prior art, the utility model has the beneficial effects that: the axial flow fan adopts three groups of fan devices to be combined together, and compared with the axial flow fan with a single fan, the sectional area of a motor of the fan in an air duct is greatly reduced; the air flowing at high speed is gradually pressurized in the three joint shafts of the fan, so that the wind speed is improved, the ejected airflow range is improved compared with the fan with the same motor power, and the noise is reduced.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic view of the assembled installation of FIG. 1 according to the present invention;

FIG. 3 is a schematic cross-sectional view taken along line B-B in FIG. 1;

FIG. 4 is a side view of the structural mounting of the present invention;

FIG. 5 is a schematic view of a mounting plate and a fixing post of the structure of the present invention;

FIG. 6 is a side view of the right splice bar of the present invention construction;

FIG. 7 is a schematic sectional view taken along line A-A in FIG. 1.

Reference numbers in the figures: 1. an air inlet protection plate; 11. a mounting ring; 12. ribs; 13. a fixing strip; 2. a first pitch shaft; 21. a left splice plate; 22. a first cylinder; 23. a fixed seat; 24. a first fan unit; 25. a right splice plate; 26. a positioning bar; 27. mounting a plate; 28. fixing a column; 3. a second joint shaft; 31. positioning a groove; 32. a second cylinder; 33. a second fan unit; 4. a third joint shaft; 41. a third cylinder; 42. a third fan unit; 5. an air outlet device; 51. a fixing plate; 52. and (4) discharging from a wind box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a high-efficiency low-noise multi-stage axial flow fan, comprising: the air inlet protection plate 1, the third spindle 4 and the air outlet device 5;

the right side of the air inlet protection plate 1 is fixedly connected with the first joint shaft 2, the end part, far away from the air inlet protection plate 1, of the first joint shaft 2 is fixedly arranged with the second joint shaft 3, and meanwhile, the bottom of the first joint shaft 2 is provided with a fixed seat 23;

the left side of the third joint shaft 4 is fixedly arranged with the second joint shaft 3, and one end of the third joint shaft 4 far away from the second joint shaft 3 is fixed with the air outlet device 5 through a bolt;

the end of the air outlet device 5 is a fixed plate 51, the right side of the fixed plate 51 is welded and fixed with the air outlet box 52, and the air outlet box 52 is hollow.

The axial flow fan adopts three groups of fan devices to be combined together, and compared with the axial flow fan with a single fan, the sectional area of a motor of the fan in an air duct is greatly reduced; the air flowing at high speed is gradually pressurized in the three joint shafts of the fan, so that the wind speed is improved, the ejected airflow range is improved compared with the fan with the same motor power, and the noise is reduced.

As a preferred embodiment, the wind protection plate 1 includes a mounting ring 11, ribs 12 and fixing strips 13, and six groups of ribs 12 are uniformly arranged inside the mounting ring 11, the distances between two adjacent groups of ribs 12 are equal, and the six groups of ribs 12 are of a concentric structure.

As a preferred embodiment, four sets of fixing strips 13 are fixedly arranged on the inner wall of the mounting ring 11, and the fixing strips 13 are fixed with the ribs 12 by welding, and the fixing strips 13 are made of stainless steel and have a "V" shape.

Six groups of annular ribs 12 are arranged inside the air inlet protection plate 1, the six groups of annular ribs 12 are uniformly reinforced through four groups of V-shaped fixing strips 13, and the air inlet protection plate 1 can isolate large sizes such as plastic bags and prevent hands from extending into the axial flow fan and being damaged.

As a better implementation mode, the first joint shaft 2 includes a left splice plate 21, a first cylinder 22, a fixing seat 23, a first fan device 24, a right splice plate 25, a positioning strip 26, a mounting plate 27 and a fixing column 28, the left side of the first cylinder 22 is fixedly disposed with the left splice plate 21, one side of the first cylinder 22, which is far away from the left splice plate 21, is fixedly disposed with the right splice plate 25, meanwhile, the inner wall of the first cylinder 22 is fixedly disposed with the fixing column 28, the end of the fixing column 28 is fixedly disposed with the mounting plate 27, and the surface of the mounting plate 27 is provided with the first fan device 24.

Install first fan unit 24, second fan unit 33 and third fan unit 42 in first festival axle 2, second festival axle 3 and the third festival axle 4 respectively, the inside air current of axial fan can be accelerated in the setting of three fan unit of group, has the characteristics that wind pressure is high, the range is far away, adopts multisection fan unit to carry out the mode of pressure boost, and the wind pressure that the fan export was jetted is high, and the air current range obtains great improvement than the fan of same motor power.

As a preferred embodiment, the second joint shaft 3 includes a positioning groove 31, a second cylinder 32 and a second fan device 33, the positioning groove 31 is opened on the left side of the second cylinder 32, a positioning strip 26 is fixedly disposed on the right surface of the right splice plate 25, the positioning strip 26 is adapted to the positioning groove 31 in size, the positioning strip 26 is inserted into the positioning groove 31, the positioning strip 26 is arc-shaped, and the second fan device 33 is installed inside the second cylinder 32.

Be detachable construction between second festival axle 3, first festival axle 2 and the third festival axle 4, be convenient for carry out maintenance work to the fan unit of festival axle inside, fix a position the installation through two sets of location strips 26, constant head tank 31 between the adjacent two sets of festival axles simultaneously, guarantee the degree of accuracy of second festival axle 3, first festival axle 2 and third festival axle 4 when the installation wait.

In a preferred embodiment, the third joint 4 includes a third cylinder 41 and a third fan device 42, the third cylinder 41 has the third fan device 42 mounted therein, the third cylinder 41 and the second cylinder 32 are fixed by bolts, and the third fan device 42, the second fan device 33 and the first fan device 24 are horizontally disposed opposite to each other.

As a preferred embodiment, the air outlet device 5 includes a fixed plate 51 and an air outlet box 52, and the air outlet device 5 and the third spindle 4 are positioned and installed through the positioning bar 26 and the positioning groove 31.

The air outlet of the air outlet device 5 is inclined downwards, so that the air outlet is prevented from directly blowing air to a person.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-efficiency low-noise multi-section axial flow fan is characterized by comprising:

the air inlet protection plate (1), the right side of the air inlet protection plate (1) is fixedly connected with the first joint shaft (2), the end part, far away from the air inlet protection plate (1), of the first joint shaft (2) is fixedly arranged with the second joint shaft (3), and meanwhile, the bottom of the first joint shaft (2) is provided with a fixing seat (23);

the left side of the third joint shaft (4) is fixedly arranged with the second joint shaft (3), and one end, far away from the second joint shaft (3), of the third joint shaft (4) is fixed with the air outlet device (5) through a bolt;

the air outlet device (5), the end of the air outlet device (5) is a fixing plate (51), the right side of the fixing plate (51) is welded and fixed with the air outlet box (52), and the air outlet box (52) is arranged in a hollow mode.

2. The efficient low-noise multi-section axial flow fan according to claim 1, wherein: the air inlet protection plate (1) comprises a mounting ring (11), ribs (12) and fixing strips (13), six groups of ribs (12) are evenly arranged inside the mounting ring (11), the distance between every two adjacent groups of ribs (12) is equal, and the six groups of ribs (12) are of concentric circle structures.

3. The efficient low-noise multi-section axial flow fan according to claim 2, wherein: four groups of fixing strips (13) are fixedly arranged on the inner wall of the mounting ring (11), the fixing strips (13) and the ribs (12) are fixed through welding, and meanwhile, the fixing strips (13) are of a V-shaped structure made of stainless steel materials.

4. The efficient low-noise multi-section axial flow fan according to claim 1, wherein: the first section shaft (2) comprises a left splicing plate (21), a first barrel (22), a fixed seat (23), a first fan device (24), a right splicing plate (25), a positioning strip (26), a mounting plate (27) and a fixed column (28), the left side of the first barrel (22) is fixedly arranged with the left splicing plate (21), one side of the first barrel (22), far away from the left splicing plate (21), is fixedly arranged with the right splicing plate (25), meanwhile, the inner wall of the first barrel (22) is fixedly arranged with the fixed column (28), the end part of the fixed column (28) is fixedly arranged with the mounting plate (27), and the surface of the mounting plate (27) is provided with the first fan device (24).

5. The efficient low-noise multi-section axial flow fan according to claim 1, wherein: second festival axle (3) include constant head tank (31), second barrel (32) and second fan unit (33), and constant head tank (31) have been seted up on the left side of second barrel (32), the right side fixed surface of right splice plate (25) is provided with location strip (26), location strip (26) and the size looks adaptation of constant head tank (31), location strip (26) are pegged graft inside constant head tank (31), location strip (26) are the arc setting, second barrel (32) internally mounted has second fan unit (33).

6. The efficient low-noise multi-section axial flow fan according to claim 1, wherein: the third joint shaft (4) comprises a third barrel (41) and a third fan device (42), the third fan device (42) is installed inside the third barrel (41), meanwhile, the third barrel (41) and the second barrel (32) are fixed through bolts, and the third fan device (42), the second fan device (33) and the first fan device (24) are horizontally arranged oppositely.

7. The efficient low-noise multi-section axial flow fan according to claim 1, wherein: the air outlet device (5) comprises a fixing plate (51) and an air outlet box (52), and the air outlet device (5) and the third section shaft (4) are positioned and installed through a positioning strip (26) and a positioning groove (31).