CN212250574U - High-efficiency fan impeller with arc-shaped blades - Google Patents

Abstract

The utility model provides a high-efficient fan wheel with arc blade, include: the fan comprises a front disc, a rear disc, a mounting ring, a plurality of frameworks and a plurality of blades, wherein the front disc and the rear disc are buckled to form a rotating cavity, air inlets communicated with the rotating cavity are formed in the front disc and the rear disc respectively, the air inlets in the rear disc are opposite to the air inlets in the front disc, the mounting ring is mounted in the rotating cavity and is used for being connected with a motor rotating shaft of the fan, the motor rotating shaft extends into the motor rotating shaft from one air inlet, a gap is formed between the motor rotating shaft and the inner wall of the air inlet, the plurality of frameworks are fixed outside the mounting ring, each framework is provided with one blade, and an air outlet is formed in the connecting position of the; each blade is arc-shaped, and all the blades are bent towards one direction. High-efficient fan wheel with arc blade solves among the prior art because of the blade is the straight block shape and leads to the problem that intake efficiency is low and air-out pressure is low.

Description

High-efficiency fan impeller with arc-shaped blades

Technical Field

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

Background

Chinese patent discloses a high-efficient energy-saving impeller of fan with application number CN201620731830.6, this impeller includes: the blades are all straight-block-shaped, wind impacts the straight-block-shaped blades after the wind enters a rotating cavity formed by the front disc and the rear disc, and the straight-block-shaped blades cannot disperse the wind to the direction of the output of the blades because part of the wind is lost due to the fact that the straight-block-shaped blades do not disperse, so that the air inlet efficiency is greatly reduced, the pressure of the output wind is also greatly reduced, and the energy consumption of the fan is more during work.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficient fan wheel with arc blade solves among the prior art because of the blade leads to the problem that intake efficiency is low and air-out pressure is low for straight block shape.

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

a high efficiency fan wheel having arcuate blades, comprising: the fan comprises a front disc, a rear disc, a mounting ring, a plurality of frameworks and a plurality of blades, wherein the front disc and the rear disc are buckled to form a rotating cavity, air inlets communicated with the rotating cavity are formed in the front disc and the rear disc respectively, the air inlets in the rear disc are opposite to the air inlets in the front disc, the mounting ring is mounted in the rotating cavity and is used for being connected with a motor rotating shaft of the fan, the motor rotating shaft extends into the motor rotating shaft from one air inlet, a gap is formed between the motor rotating shaft and the inner wall of the air inlet, the plurality of frameworks are fixed outside the mounting ring, each framework is provided with one blade, and an air outlet is formed in the connecting position of the; each blade is arc-shaped, and all the blades are bent towards one direction.

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

set up the blade into the arc for the area wind efficiency of blade is higher, and the efficiency that electric energy turned into wind energy is higher, and the power consumption is lower in the unit interval when guaranteeing same air outlet flow and pressure, has not only reduced use cost, is favorable to the environmental protection more.

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 arc-shaped blades in embodiment 1 after being partially cut away;

FIG. 2 is a cross-sectional view of the high efficiency fan wheel of FIG. 1 having curved blades;

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.

Reference numerals: the air conditioner comprises a front disc 1, an air inlet 11, a rear disc 2, a mounting ring 3, a framework 4, blades 6, a rectifying cylinder 5, a cylinder body 51, a sealing ring 52, a triangular block 53, a connecting assembly 54, a plug 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 and an L-shaped block 548.

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 blade 6, include: the fan comprises a front disc 1, a rear disc 2, a mounting ring 3, a plurality of frameworks 4 and a plurality of blades 6, wherein the front disc 1 and the rear disc 2 are buckled to form a rotating cavity, air inlets 11 communicated with the rotating cavity are formed in the front disc 1 and the rear disc 2, the air inlets 11 in the rear disc 2 are opposite to the air inlets 11 in the front disc 1, the mounting ring 3 is mounted in the rotating cavity, the mounting ring 3 is used for being connected with a motor rotating shaft of a fan, the motor rotating shaft extends into the air inlets 11, a gap is formed between the motor rotating shaft and the inner wall of the air inlets 11, the plurality of frameworks 4 are fixed outside the mounting ring 3, each framework 4 is provided with one blade 6, and an air outlet is formed in the connecting part of the front disc 1 and the rear;

each of the blades 6 is arc-shaped, and all the blades 6 are curved in one direction.

In order to ensure the efficiency of converting electric energy into wind energy, the side wall of the rotating cavity close to the tip end of the blade 6 is a circular annular side wall, and the size of an included angle a between the tip end of the blade 6 and the tangent line of the annular side wall is 45-56 degrees.

The surface of the front disc 1, which deviates from the rear disc 2, and the surface of the rear disc 2, which deviates from the front disc 1, are arc-shaped surfaces, each arc-shaped surface is bent in a direction deviating from the mounting ring 3, and a rectifying cylinder 5 is mounted on each arc-shaped 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.

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 11, 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 51 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.

In order to facilitate the detachment of the triangular block 53 from the cylinder body 51, the end part of the guide rod 546 outside the triangular block 53 is fixed to one end of the pulling-assisting block 547, the other end of the pulling-assisting block 547 extends in a direction away from the front disk 1, an L-shaped block 548 is fixed beside the guide rod 546, the L-shaped block 548 surrounds the guide rod 546 and the pulling-assisting block 547, and the L-shaped block 548 is connected with the triangular block 53 and extends in a direction away from the front disk 1.

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.

The working principle of the embodiment is as follows: when the air conditioner works, firstly, the impeller is placed, and the air inlet direction of the air inlet 11 is kept in the horizontal direction; then, all the triangular blocks 53 are attached to the end surface of the cylinder 51 near the front panel 1, the center line of the cylinder 51 is kept in the horizontal direction, the large end of the second wedge 544 is kept in close contact with the first wedge 542 by 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 the elastic force of the second spring 545), and the plug 541 is forcibly pressed into the cylinder 51; then, the barrel 51 and the triangular blocks 53 are moved, so that the end part, far away from the rear disk 2, of the front disk 1 penetrates through the barrel 51, due to the blocking effect of the front disk 1 and the effect of the bolts 541, the triangular blocks 53 are not easy to be separated from the barrel 51, all the triangular blocks 53 are pressed on the arc-shaped surface through the barrel 51 finally, the triangular blocks 53 are tightly attached to the arc-shaped surface, when the triangular blocks 53 are tightly attached to the arc-shaped surface, the barrel 51 is marked to move in place, the central line of the barrel 51 is parallel to the wind direction of the air inlet 11, and the triangular blocks 53 are provided with surfaces matched with the arc-shaped surface; then, welding the inner wall of the cylinder body 51 on the arc-shaped surface; finally, the pulling-aid block 547 is tightly attached to the L-shaped block 548, which means that the small end of the second wedge 544 is already in contact with the first wedge 542, the pin 541 is separated from the barrel 51 under the elastic force of the first spring 543, so that the triangular block 53 can be separated from the barrel 51, the barrel 51 is mounted to the front, and then the seal ring 52 is welded to the barrel 51 to the front.

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 (6)

1. A high efficiency fan wheel with arcuate blades comprising: the fan comprises a front disc, a rear disc, a mounting ring, a plurality of frameworks and a plurality of blades, wherein the front disc and the rear disc are buckled to form a rotating cavity, air inlets communicated with the rotating cavity are formed in the front disc and the rear disc respectively, the air inlets in the rear disc are opposite to the air inlets in the front disc, the mounting ring is mounted in the rotating cavity and is used for being connected with a motor rotating shaft of the fan, the motor rotating shaft extends into the motor rotating shaft from one air inlet, a gap is formed between the motor rotating shaft and the inner wall of the air inlet, the plurality of frameworks are fixed outside the mounting ring, each framework is provided with one blade, and an air outlet is formed in the connecting position of the; each blade is arc-shaped, and all the blades are bent towards one direction.

2. A high efficiency fan wheel with curved blades as claimed in claim 1 wherein the side wall of the rotating chamber near the blade tip is a circular annular side wall, and the angle between the blade tip and the tangent of the annular side wall is 45 ° to 56 °.

3. The high-efficiency fan impeller with the arc-shaped blades as claimed in claim 2, wherein the surface of the front disk, which is far away from the rear disk, and the surface of the rear disk, which is far away from the front disk, are both arc-shaped surfaces, each arc-shaped surface is bent in a direction far away from the mounting ring, and each arc-shaped surface is provided with a rectifying cylinder;

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 arcuate blades as defined in claim 3 wherein the fairing barrel 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 arcuate blades as defined in claim 4 wherein each connecting assembly includes: 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 blades as claimed in claim 5, wherein the end part of the guide rod, which is positioned outside the triangular block, is fixed to one end of the pulling-assisting block, the other end of the pulling-assisting block extends in the direction away from the front disk, an L-shaped block is fixed beside the guide rod, the L-shaped block surrounds outside the guide rod and the pulling-assisting block, and the L-shaped block is connected with the triangular block and then extends in the direction away from the front disk.

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