CN211009266U

CN211009266U - High-efficiency fan impeller with arc-shaped front disc

Info

Publication number: CN211009266U
Application number: CN201921905434.0U
Authority: CN
Inventors: 高峰; 胡文招; 高平
Original assignee: Chongqing Woya Machinery Co ltd
Current assignee: Chongqing Woya Machinery Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-07-14
Anticipated expiration: 2029-11-06

Abstract

The utility model provides a high-efficient fan wheel with arc front bezel, include: the centrifugal fan comprises a front disc, a rear disc, a shaft disc and a plurality of blades, wherein the front disc and the rear disc are buckled to form a rotating cavity, the front disc is provided with an air inlet communicated with the rotating cavity, the rear disc is provided with an installation opening opposite to the air inlet, the shaft disc is installed in the installation opening and is in a cone shape, a rotating shaft of the centrifugal fan passes through the shaft disc, the rotating shaft extends into the rotating cavity, and the end part of the rotating shaft, which is positioned in the rotating cavity, is provided with the blades; the surface of the front disc close to the rear disc protrudes to form a first guide surface, the first guide surface is arc-shaped, and the first guide surface is used for guiding the wind direction blades entering the air inlet. The efficient fan impeller with the arc-shaped front disc solves the problem that the surface of the front disc close to the rear disc is an inclined plane for flat shaping in the prior art, so that the air inlet effect and the air outlet effect are reduced.

Description

High-efficiency fan impeller with arc-shaped front disc

Technical Field

The utility model relates to a fan, concretely relates to high-efficient fan wheel with arc front bezel.

Background

Chinese patent discloses a high-efficient energy-saving impeller of fan with application number CN201620731830.6, this impeller includes: the impeller comprises a front disc and a rear disc, wherein an air inlet is formed in the front disc, an air inlet chamber is connected to the air inlet, a conical disc is arranged in the impeller and is over against the air inlet chamber, the large end of the conical disc is fixedly connected to the rear disc, airflow enters the impeller from the air inlet chamber and then changes the flow direction of the airflow through the conical disc, so that the airflow enters a blade flow channel of the impeller, and the impeller still has the following defects that:

the face that the front disc is close to the back dish is an inclined plane, and the inclined plane is smooth plane, and after wind got into from the air intake, the effect of dispersing of inclined plane to wind was handed over the end for a lot of wind disappears and gets into the position at little impeller blade place under the effect on inclined plane, has reduced the air inlet effect, also leads to the air-out effect to reduce, has increased the power consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficient fan wheel with arc front bezel solves among the prior art front bezel and is close to the inclined plane of back dish and leads to the problem that air inlet effect and air-out effect reduce for the inclined plane of flat plastic.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high efficiency fan wheel with an arcuate front disk comprising: the centrifugal fan comprises a front disc, a rear disc, a shaft disc and a plurality of blades, wherein the front disc and the rear disc are buckled to form a rotating cavity, the front disc is provided with an air inlet communicated with the rotating cavity, the rear disc is provided with an installation opening opposite to the air inlet, the shaft disc is installed in the installation opening and is in a cone shape, a rotating shaft of the centrifugal fan passes through the shaft disc, the rotating shaft extends into the rotating cavity, and the end part of the rotating shaft, which is positioned in the rotating cavity, is provided with the blades; the surface of the front disc close to the rear disc protrudes to form a first guide surface, the first guide surface is arc-shaped, and the first guide surface is used for guiding the wind direction blades entering the air inlet.

Compared with the prior art, the utility model discloses following beneficial effect has:

through setting up first spigot surface, wind gets into the back from the air intake, wind blows to the second spigot surface, through the direction of second spigot surface, there is a partem to first spigot surface striking, first spigot surface is arc, make the loss reduce after the wind strikes, first spigot surface has the trend with the direction of wind direction blade direction, make air inlet efficiency improve 5%, make air-out pressure increase, improved the conversion rate that the electric energy truned into the wind energy into, the consumption of electric energy has been reduced, be favorable to the environmental protection, avoided leading to the amount of wind loss great because of first spigot surface is the planishing surface.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural view of a high-efficiency fan impeller with an arc-shaped front disc in a partially cut-away manner in embodiment 1;

FIG. 2 is a cross-sectional view of the high efficiency fan wheel of FIG. 1 having an arcuate front disk;

FIG. 3 is an enlarged view of the fairing barrel of FIG. 2;

fig. 4 is an enlarged view of the position of the rectifying cylinder in embodiment 2.

The reference numbers are that a front disk 1, a rear disk 2, a shaft disk 3, blades 4, an air inlet 10, a first guide surface 11, a second guide surface 31, a rectifying cylinder 5, a cylinder body 51, a closing ring 52, a triangular block 53, a connecting assembly 54, a bolt 541, a first wedge block 542, a first spring 543, a second wedge block 544, a second spring 545, a guide rod 546, a pulling-assisting block 547, a block 548L and a reverse thrust blade 6.

Detailed Description

In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:

as shown in fig. 1 to 3, the utility model provides a high-efficient fan wheel with arc front bezel 1, include: the centrifugal fan comprises a front disc 1, a rear disc 2, a shaft disc 3 and a plurality of blades 4, wherein the front disc 1 and the rear disc 2 are buckled to form a rotating cavity, an air inlet 10 communicated with the rotating cavity is formed in the front disc 1, an installation opening opposite to the air inlet 10 is formed in the rear disc 2, the shaft disc 3 is installed in the installation opening, the shaft disc 3 is in a cone shape, a rotating shaft of the centrifugal fan penetrates through the shaft disc 3, the rotating shaft extends into the rotating cavity, and the blades 4 are installed at the end part of the rotating shaft, which is located in the rotating cavity; the surface of the front disc 1 close to the rear disc 2 protrudes to form a first guide surface 11, the first guide surface 11 is arc-shaped, and the first guide surface 11 is used for guiding the wind direction blades 4 entering from the wind inlet 10.

In order to further improve the air intake efficiency, the side of the shaft disc 3 facing the front disc 1 is recessed to form a second guide surface 31, the second guide surface 31 is used for guiding the wind direction blades 4 entering from the wind inlet 10, and the second guide surface 31 is arc-shaped.

The surface of the front disc 1, which is far away from the rear disc 2, is an arc surface, the arc surface is bent in the direction far away from the rear disc 2, and a rectifying cylinder 5 is arranged on the arc surface; the rectifying cylinder 5 includes: the cylinder 51 surrounds the front disc 1, the center line of the cylinder 51 is parallel to the center line of the front disc 1, the inner wall of the cylinder 51 is fixed with the arc-shaped surface, and a gap between the outer wall of the cylinder 51 and the front surface is closed by the closing ring 52. The role of the rectifying cylinder 5 is as follows: if a cylindrical structure is added outside the air inlet part in the cambered surface, the backflow of air in the front disc 1 can be controlled when the swirling flow in the front disc 1 is weakened.

On the rear side of the rear disk 2 facing away from the front disk 1, a plurality of thrust reversal vanes 6 are mounted. The reverse thrust blade 6 is welded on the impeller rear disc 2 and has the following functions: when the impeller rotates, the reverse thrust blades 6 rotate on the surface of the impeller to apply work to form reverse pressure opposite to the gas pressure on the back surface of the impeller rear disc 2 so as to counteract the axial thrust acting on the back surface of the impeller, play a role in protecting the rotor bearing, prolong the service life of the rotor bearing, reduce the eddy current on the surface of the impeller and improve the work of the impeller.

Example 2:

this example differs from example 1 in that: in order to facilitate the installation of the cylinder 51 and ensure that the center line of the cylinder 51 is parallel to the wind direction at the wind inlet 10, the present embodiment only adds at least 3 triangular blocks 53 and a plurality of connecting assemblies 54 for assisting the installation of the cylinder 51 on the basis of embodiment 1.

The rectifying cylinder 5 further includes: at least 3 triangular blocks 53 and a plurality of connecting assemblies 54, the barrel 51 is clung to the arc surface through all the triangular blocks 53, and each triangular block 53 is detachably connected with the barrel through one connecting assembly 54.

To design a convenient-to-use coupling assembly 54, each coupling assembly 54 includes: a bolt 541, a first wedge 542, a first spring 543, a second wedge 544, a second spring 545 and a guide bar 546, wherein each triangular block 53 is provided with a mounting cavity, the bolt 541 is mounted in the mounting cavity, the bolt 541 can move in a direction parallel to the central line of the cylinder 51 relative to the cylinder 51, one end of the bolt 541 is used for extending into the cylinder 51, the other end of the bolt 541 is fixed to the first wedge 542 and acts with the first wedge 542, the large end of the second wedge 544 is fixed to one end of the guide bar 546, the other end of the guide bar 546 passes through the large end of the triangular block 53, the guide bar 546 can move in a direction perpendicular to the central line of the cylinder 51 under the guidance of the triangular block 53, the small end of the second wedge 544 extends away from the guide bar 546, the large end of the second wedge 544 is fixed to one end of the second spring 545, the other end of the second spring 545 is fixed to the inner wall of the mounting cavity, the first wedge 542 is connected to one end 543 of, the other end of the first spring 543 is fixed to the inner wall of the mounting cavity, and the first spring 543 is penetrated by the pin 541.

To facilitate the disengagement of the triangular block 53 from the barrel 51, the end of the guide bar 546 outside the triangular block 53 is fixed to one end of the pull-aid 547, the other end of the pull-aid 547 extends away from the front plate 1, a L-shaped block 548 is fixed beside the guide bar 546, a L-shaped block 548 surrounds the guide bar 546 and the pull-aid 547, and a L-shaped block 548 is connected to the triangular block 53 and extends away from the front plate 1.

The working principle of the embodiment is that in operation, firstly, an impeller is placed, the air inlet direction of an air inlet 10 is kept in a horizontal direction, then, all the triangular blocks 53 are installed on the end face, close to the front disc 1, of the cylinder body 51, the central line of the cylinder body 51 is kept in the horizontal direction, the large end of the second wedge block 544 is kept in close contact with the first wedge block 542 under the elastic force of the second spring 545, the first spring 543 is compressed (the elastic force of the first spring 543 is smaller than that of the second spring 545), the plug 541 is forcibly pressed into the cylinder body 51, then, the cylinder body 51 and the triangular blocks 53 are moved, the end, far away from the rear disc 2, of the front disc 1 penetrates through the cylinder body 51, due to the blocking effect of the front disc 1 and the effect of the plug 541, the triangular blocks 53 are not easily separated from the cylinder body 51, finally, all the triangular blocks 53 are pressed on the arc-shaped face through the cylinder body 51, the triangular blocks 53 are in close contact with the arc-shaped face, the triangular blocks 53 are moved to be in place when the cylinder body 51 is closely contacted with the arc-shaped face, the central line of the cylinder body 51 is parallel to the air inlet direction of the air inlet 10, the triangular blocks 53 are arranged, the arc-shaped face matched, the arc-shaped face is kept in the state, the rear face, the upper face is in contact with the cylinder body 51, the plug 548 is welded with the cylinder body 51, the.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A high efficiency fan wheel with an arcuate front disk comprising: the centrifugal fan comprises a front disc, a rear disc, a shaft disc and a plurality of blades, wherein the front disc and the rear disc are buckled to form a rotating cavity, the front disc is provided with an air inlet communicated with the rotating cavity, the rear disc is provided with an installation opening opposite to the air inlet, the shaft disc is installed in the installation opening and is in a cone shape, a rotating shaft of the centrifugal fan passes through the shaft disc, the rotating shaft extends into the rotating cavity, and the end part of the rotating shaft, which is positioned in the rotating cavity, is provided with the blades; the method is characterized in that:

the surface of the front disc close to the rear disc protrudes to form a first guide surface, the first guide surface is arc-shaped, and the first guide surface is used for guiding the wind direction blades entering the air inlet.

2. The high-efficiency fan impeller with the arc-shaped front disc as claimed in claim 1, wherein the side surface of the shaft disc facing the front disc is recessed to form a second guide surface, the second guide surface is used for guiding the wind direction blades entering from the wind inlet, and the second guide surface is arc-shaped.

3. The efficient fan impeller with the arc-shaped front disc is characterized in that the surface of the front disc, which is far away from the rear disc, is an arc-shaped surface, the arc-shaped surface is bent in the direction far away from the rear disc, and a rectifying cylinder is mounted on the arc-shaped surface;

the rectifying cylinder includes: the barrel surrounds the front disc, the center line of the barrel is parallel to that of the front disc, the inner wall of the barrel is fixed with the arc-shaped surface, and a gap between the outer wall of the barrel and the front face is sealed by the sealing ring.

4. A high efficiency fan wheel having an arcuate front disk as set forth in claim 3 wherein said fairing cylinder further comprises: at least three piece 3 triangle blocks and a plurality of coupling assembling, the barrel is hugged closely with the arcwall face through all three triangle blocks, and each three triangle blocks all can be dismantled with the barrel through a coupling assembling and be connected.

5. A high efficiency fan wheel having an arcuate front disk as claimed in claim 4 wherein each connection assembly comprises: a bolt, a first wedge block, a first spring, a second wedge block, a second spring and a guide rod, wherein each triangular block is internally provided with an installation cavity, a bolt is arranged in the mounting cavity and can move in the direction parallel to the central line of the cylinder body relative to the cylinder body, one end of the bolt is used for extending into the cylinder body, the other end of the bolt is fixed to the first wedge block, a second wedge block is acted with the first wedge block, the big end of the second wedge block is fixed at one end of a guide rod, the other end of the guide rod passes through the big end of the triangular block, the guide rod can move in the direction perpendicular to the central line of the cylinder under the guide of the triangular block, the small end of the second wedge block extends in the direction away from the guide rod, the large end of the second wedge block is fixed to one end of a second spring, the other end of the second spring is fixed to the inner wall of the installation cavity, the first wedge block is connected to one end of a first spring, the other end of the first spring is fixed to the inner wall of the installation cavity, and the first spring is penetrated by a bolt.

6. The high efficiency fan impeller with the arc shaped front disk as claimed in claim 5, wherein the end of the guide bar outside the triangular block is fixed to one end of the pulling aid block, the other end of the pulling aid block extends in a direction away from the front disk, L-shaped block is fixed beside the guide bar, L-shaped block surrounds the guide bar and the pulling aid block, L-shaped block is connected with the triangular block and then extends in a direction away from the front disk.

7. A high efficiency fan wheel with an arcuate front disk as claimed in claim 5 wherein a plurality of thrust reversers are mounted on the back of the rear disk facing away from the front disk.