CN111365295B

CN111365295B - Axial flow fan impeller

Info

Publication number: CN111365295B
Application number: CN202010334411.XA
Authority: CN
Inventors: 皮芝青; 吴大胜
Original assignee: Changzhou Changhao Machinery Co ltd
Current assignee: CHANGZHOU CHANGHAO MACHINERY Co.,Ltd.
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-04-02
Anticipated expiration: 2040-04-24
Also published as: CN111365295A

Abstract

The invention belongs to the technical field of axial flow fans, and particularly relates to an axial flow fan impeller which comprises blades and a sleeve; the sleeve is in a regular hexagon shape, each outer side wall of the sleeve is hinged with a blade, the end part of each blade penetrates through the side wall of the sleeve and extends into the sleeve, the end part of each blade extending into the sleeve is fixedly connected with a first conical gear, and the first conical gear is meshed with a second conical gear arranged in the sleeve; the second conical gear is hinged in the sleeve, and the sleeve is connected with the upper end face of the second conical gear through a buckle; the angle of each blade is synchronously changed by matching the first conical gear with the second conical gear; the angle of blade can be according to operational environment's demand, the different angle of adjustment for blade application range is wider, and then an impeller that can adjust the blade angle can replace the impeller work of a plurality of different angles, saves the input of the cost of impeller equipment, improves the working efficiency.

Description

Axial flow fan impeller

Technical Field

The invention belongs to the technical field of axial flow fans, and particularly relates to an axial flow fan impeller.

Background

The axial flow fan has a wide application range, such as an electric fan, and an air conditioner external unit fan is a fan operated in an axial flow mode. 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. The axial fan fixes the position and moves the air. The axial flow fan mainly comprises a fan impeller and a casing, and is simple in structure but high in data requirement.

Impeller in the current fan, its blade or with wheel hub integrated into one piece, or fixed mounting to wheel hub on, no matter which kind of mode all is once processed the completion, the blade angle just can not change, consequently a finished product impeller can only satisfy the operation requirement of a operating mode. In the actual use process, due to the fact that the working environment is complex, the required ventilation volume and the required air pressure are different, the ventilator is in the best working state, the ventilator needs to be matched with the impeller with the appropriate parameters, equipment is troublesome to replace, cost burden is increased, and the effective utilization rate of the ventilator is reduced.

The axial flow fan impeller with the adjustable blade angle, which is provided in the application number 2016107860648, needs to adjust each blade in sequence in the process of adjusting the angle, increases the adjusting labor force of the blades, and is not easy to adjust the angle of the blades.

Disclosure of Invention

In order to remedy the deficiencies of the prior art and to solve the problems described in the background, the invention proposes an axial fan impeller.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an axial flow fan impeller which comprises blades and a sleeve, wherein the sleeve is in a regular hexagon shape, each outer side wall of the sleeve is hinged with one blade, the end part of each blade penetrates through the side wall of the sleeve and extends into the sleeve, the end part of each blade extending into the sleeve is fixedly connected with a first conical gear, and the first conical gear is meshed with a second conical gear arranged in the sleeve; the second-order bevel gear is hinged in the sleeve, and the sleeve is connected with the upper end face of the second-order bevel gear through a buckle; the angle of each blade is synchronously changed by matching the first conical gear with the second conical gear; when the angle adjusting mechanism works, in the process of adjusting the angle of each blade, firstly, the buckle on the second conical gear is removed, then the second conical gear is rotated, meanwhile, the second conical gear drives the first conical gear to rotate, then the first conical gear drives the moving blade to rotate, when the blade is adjusted to a proper angle, the second conical gear stops rotating, and then the buckle is buckled on the second conical gear; the angle of blade can be according to operational environment's demand, the different angle of adjustment for blade application range is wider, and then an impeller that can adjust the blade angle can replace the impeller work of a plurality of different angles, saves the input of the cost of impeller equipment, improves the working efficiency.

Preferably, a third conical gear is arranged in the sleeve; the third conical gear is positioned below the first conical gear, a first rod with a key pin is arranged at the center of the third conical gear, the first rod penetrates through a through hole formed in the center of the second conical gear, the shape of the through hole corresponds to that of the outer ring of the first rod, the first rod is in clearance fit with the through hole, and the end part of the first rod is connected with the upper end face of the second conical gear through a first spring; through the cooperation between the third conical gear, the second conical gear and the first spring, the blades are further prevented from rotating automatically; during operation, before rotating No. two bevel gears, through pressing a pole for No. one the pole outer lane does not contact with the through-hole, No. one the pole promotes No. three bevel gears and keeps away from a bevel gear simultaneously, and a bevel gear does not mesh with No. three bevel gears, then rotate No. two bevel gears again, adjust the angle of blade, after blade angle modulation, No. one the pole is no longer pressed, under the elastic force effect of a spring, initial position is resumeed to a pole, No. three bevel gears mesh with a bevel gear promptly, No. one the pole embedding through-hole, thereby improve the stability between a bevel gear and No. two bevel gears and No. three bevel gears, prevent the emergence of blade self-rotation phenomenon.

Preferably, a plurality of stop blocks are arranged on the inner side wall of the sleeve; each stop block is positioned in the middle of each inner side wall of the sleeve, and each stop block is positioned below each first conical gear; in an initial state, the third conical gear is meshed with the first conical gear, and the third conical gear is clamped on the stop block; the third conical gear is prevented from rotating through the matching between the stop block and the third conical gear; during operation, when No. three conical tooth wheel and conical tooth wheel meshing, No. three conical tooth wheel joint are on the dog, and the dog makes No. three conical tooth wheel firmly stable and do not take place to rotate, and a pole also firmly imbeds in the through-hole simultaneously to improve the stability between conical tooth wheel and No. two conical tooth wheel and No. three conical tooth wheel, prevent the emergence of blade rotation phenomenon by oneself.

Preferably, a second spring is arranged between each first conical gear and the inner side wall of the sleeve; each outer side wall of the sleeve is attached to the blade connecting part through a concave part and a convex part; through the matching among the second spring, the concave part and the convex part, the blade is further prevented from rotating automatically, and the stability between the blade and the outer side wall of the sleeve is enhanced; during operation, after the angle of the blade is adjusted, the blade and the outer side wall of the sleeve are attached together through the concave part and the convex part, the effect of the elastic force of the second spring is matched, the second spring increases the friction force between the convex part and the concave part, and therefore, after the angle of the blade is adjusted, during operation, the blade can be closely and firmly attached together with the sleeve, and the phenomenon that the blade deflects automatically due to the influence of wind power is avoided after the impeller rotates.

Preferably, two screws are uniformly arranged on the outer side wall of the sleeve, each screw penetrates through the side wall of the sleeve and extends into the sleeve, and the screws are used for fastening the sleeve on an external motor output shaft, so that the connection firmness between the screws is improved, and meanwhile, the end part of the motor output shaft stably abuts against the third conical gear, so that the third conical gear is further prevented from rotating; during operation, after the angular adjustment of blade, insert the sleeve with the output shaft of motor in for the tip of motor output shaft supports on No. three conical gear's terminal surface, then the rotation screw, and fix the output shaft of motor in the sleeve, the output shaft tip of motor supports firmly on No. three conical gear's terminal surface simultaneously, thereby strengthens the stability between a conical gear and No. two conical gear and No. three conical gear, prevents the emergence of blade self-rotation phenomenon.

Preferably, an elliptical protective shell is arranged at the end part of the sleeve, and the protective shell is arranged close to the second bevel gear; the protective shell prevents external dust from being sucked into the sleeve and guides airflow to flow upwards; during operation, during the impeller rotates, with external wind suction axial fan in, wind simultaneously also takes the dust into axial fan in, and the dust if when being arranged into the sleeve, the dust can influence the meshing effect between conical gear, No. two conical gear and No. three conical gear, settles the protective housing for this reason on the sleeve, and the protective housing not only prevents in external dust gets into the sleeve, and oval-shaped protective housing guide air current flows on to the blade simultaneously, and increase axial fan airs exhaust effect.

The invention has the technical effects and advantages that:

1. according to the axial flow fan impeller, the angles of the blades can be adjusted to different angles according to the requirements of the working environment, so that the application range of the blades is wider, and then one impeller capable of adjusting the blade angles can replace a plurality of impellers with different angles to work, so that the investment of the cost of impeller equipment is saved, and the working benefit is improved.

2. According to the axial flow fan impeller, the blades are attached to the outer side wall of the sleeve through the concave parts and the convex parts, and the second spring is matched with the action of the elastic force of the second spring, so that the friction force between the concave parts and the convex parts is increased, and the blades can be tightly and firmly attached to the sleeve when the blades work after the angle is adjusted, so that the phenomenon that the blades automatically deflect due to the influence of wind power after the impeller rotates is avoided.

Drawings

The invention is further described with reference to the following figures and embodiments.

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

FIG. 2 is a top view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a cross-sectional view of the present invention;

in the figure: blade 1, conical gear 11, No. two spring 111, sleeve 2, No. two conical gear 21, buckle 22, No. three conical gear 23, No. one pole 231, No. one spring 232, dog 24, screw 25, protective housing 26.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the axial flow fan impeller according to the present invention includes a blade 1 and a sleeve 2, the sleeve 2 is a regular hexagon, one blade 1 is hinged on each outer side wall of the sleeve 2, an end of the blade 1 penetrates through a side wall of the sleeve 2 and extends into the sleeve 2, an end of the blade 1 extending into the sleeve 2 is fixedly connected with a first bevel gear 11, and the first bevel gear 11 is engaged with a second bevel gear 21 arranged in the sleeve 2; the second-number conical gear 21 is hinged in the sleeve 2, and the sleeve 2 is connected with the upper end face of the second-number conical gear 21 through a buckle 22; the synchronous change of the angle of each blade 1 is realized through the matching between the first conical gear 11 and the second conical gear 21; during working, in the process of adjusting the angle of each blade 1, firstly, the buckle 22 on the second conical gear 21 is removed, then the second conical gear 21 is rotated, meanwhile, the second conical gear 21 drives the first conical gear 11 to rotate, then the first conical gear 11 drives the blade 1 to rotate, when the blade 1 is adjusted to a proper angle, the second conical gear 21 stops rotating, and then the buckle 22 is buckled on the second conical gear 21; the angle of blade 1 can be according to operational environment's demand, the different angle of adjustment for 1 application range of blade is wider, then the impeller work that a plurality of different angles can be replaced to the impeller that can adjust 1 angle of blade, saves the input of the cost of impeller equipment, improves the working efficiency.

As a specific embodiment of the present invention, a third bevel gear 23 is provided in the sleeve 2; the third conical gear 23 is positioned below the first conical gear 11, a first rod 231 with a key pin is arranged at the center of the third conical gear 23, the first rod 231 penetrates through a through hole formed in the center of the second conical gear 21, the shape of the through hole corresponds to that of the outer ring of the first rod 231, the first rod 231 is in clearance fit with the through hole, and the end part of the first rod 231 is connected with the upper end face of the second conical gear 21 through a first spring 232; through the cooperation among the third conical gear 23, the second conical gear 21 and the first spring 232, the blade 1 is further prevented from rotating by itself; during operation, before rotating second conical gear 21, through pressing a pole 231, make No. one pole 231 outer lane not contact with the through-hole, No. one pole 231 promotes No. three conical gear 23 and keeps away from No. one conical gear 11 simultaneously, and No. one conical gear 11 does not mesh with No. three conical gear 23, then rotates second conical gear 21 again, adjusts the angle of blade 1, after blade 1 angle modulation, No. one pole 231 is no longer pressed, under the elastic force effect of a spring 232, No. one pole 231 resumes initial position, No. three conical gear 23 meshes with No. one conical gear 11, No. one pole 231 imbeds in the through-hole, thereby improve the stability between No. one conical gear 11 and No. two conical gear 21 and No. three conical gear 23, prevent the emergence of blade 1 self-rotation phenomenon.

As a specific embodiment of the present invention, a plurality of stoppers 24 are disposed on the inner sidewall of the sleeve 2; each stop block 24 is positioned at the middle position of each inner side wall of the sleeve 2, and each stop block 24 is positioned below each first conical gear 11; in an initial state, the third conical gear 23 is meshed with the first conical gear 11, and the third conical gear 23 is clamped on the stop block 24; the third conical gear 23 is prevented from rotating through the matching between the stop block 24 and the third conical gear 23; during operation, when No. three conical gear 23 and conical gear 11 meshing, No. three conical gear 23 joint is on dog 24, and dog 24 makes No. three conical gear 23 firmly stable and do not take place to rotate, and a pole 231 also firmly imbeds in the through-hole simultaneously to improve the stability between conical gear 11 and No. two conical gear 21 and No. three conical gear 23, prevent the emergence of blade 1 self-rotation phenomenon.

As a specific embodiment of the present invention, a second spring 111 is disposed between each first bevel gear 11 and the inner side wall of the sleeve 2; each outer side wall of the sleeve 2 is attached to the connecting part of the blade 1 through a concave part and a convex part; through the matching among the second spring 111, the concave part and the convex part, the blade 1 is further prevented from rotating by itself, and the stability between the blade 1 and the outer side wall of the sleeve 2 is enhanced; during operation, behind the 1 angle of adjustment of blade, because between 1 blade and the 2 lateral walls of sleeve through the concave part with the convex part is attached together, the effect of No. two spring 111 elastic forces of deuterogamy, No. two spring 111 will increase frictional force between the concave part convex part, therefore during operation behind the 1 angle of adjustment of blade, blade 1 can with sleeve 2 between closely and firmly attached together to avoided the impeller to rotate the back, the emergence of the angle phenomenon of deflecting takes place for blade 1 by oneself because of the influence of wind-force.

As a specific embodiment of the present invention, two screws 25 are uniformly arranged on the outer side wall of the sleeve 2, each screw 25 penetrates through the side wall of the sleeve 2 and extends into the sleeve 2, and the screws 25 are used for fastening the sleeve 2 on the outer motor output shaft, so as to improve the firmness of connection between the screws, and simultaneously, the end of the motor output shaft stably abuts against the third bevel gear 23, thereby further preventing the third bevel gear 23 from rotating; during operation, after the angle adjustment of blade 1, insert the output shaft of motor in sleeve 2 for the tip of motor output shaft supports on No. three conical gear 23's terminal surface, then rotatory screw 25, and fix the output shaft of motor in sleeve 2, the output shaft tip of motor supports firmly on No. three conical gear 23's terminal surface simultaneously, thereby strengthens the stability between No. one conical gear 11 and No. two conical gear 21 and No. three conical gear 23, prevents the emergence of blade 1 self-rotation phenomenon.

As a specific embodiment of the present invention, an elliptical protective casing 26 is disposed at an end of the sleeve 2, and the protective casing 26 is disposed near the second-order bevel gear 21; by the protective shell 26, external dust is prevented from being sucked into the sleeve 2, and the airflow is guided to flow towards the blade 1; during operation, when the impeller rotates, external wind is sucked into the axial flow fan, meanwhile, the wind brings dust into the axial flow fan, and if the dust is discharged into the sleeve 2, the dust can influence the meshing effect among the first conical gear 11, the second conical gear 21 and the third conical gear 23, therefore, the protective shell 26 is arranged on the sleeve 2, the protective shell 26 not only prevents external dust from entering the sleeve 2, but also the oval protective shell 26 guides airflow to flow onto the blades 1, and the exhaust effect of the axial flow fan is improved.

During working, in the process of adjusting the angle of each blade 1, firstly, the buckle 22 on the second conical gear 21 is removed, then the second conical gear 21 is rotated, meanwhile, the second conical gear 21 drives the first conical gear 11 to rotate, then the first conical gear 11 drives the blade 1 to rotate, when the blade 1 is adjusted to a proper angle, the second conical gear 21 stops rotating, and then the buckle 22 is buckled on the second conical gear 21; the angle of the blade 1 can be adjusted to different angles according to the requirements of the working environment, so that the application range of the blade 1 is wider, and then one impeller capable of adjusting the angle of the blade 1 can replace a plurality of impellers with different angles to work, thereby saving the investment of the cost of impeller equipment and improving the working benefit; before the second conical gear 21 is rotated, the first rod 231 is pressed, so that the outer ring of the first rod 231 is not contacted with the through hole, meanwhile, the first rod 231 pushes the third conical gear 23 to be away from the first conical gear 11, the first conical gear 11 is not meshed with the third conical gear 23, then the second conical gear 21 is rotated, the angle of the blade 1 is adjusted, after the angle of the blade 1 is adjusted, the first rod 231 is not pressed, under the action of the elastic force of the first spring 232, the first rod 231 restores to the initial position, namely, the third conical gear 23 is meshed with the first conical gear 11, and the first rod 231 is embedded into the through hole, so that the stability between the first conical gear 11 and the second conical gear 21 as well as the third conical gear 23 is improved, and the self-rotation phenomenon of the blade 1 is prevented; when the third conical gear 23 is meshed with the first conical gear 11, the third conical gear 23 is clamped on the stop block 24, the stop block 24 enables the third conical gear 23 to be firmly and stably fixed and not to rotate, and the first rod 231 is also firmly embedded in the through hole, so that the stability between the first conical gear 11 and the second conical gear 21 and the third conical gear 23 is improved, and the phenomenon that the blade 1 rotates automatically is prevented; after the angle of the blade 1 is adjusted, because the blade 1 and the outer side wall of the sleeve 2 are attached together through the concave part and the convex part, and the second spring 111 is matched with the elastic force of the second spring 111, the friction force between the concave part and the convex part is increased, so that when the blade 1 works after the angle is adjusted, the blade 1 and the sleeve 2 can be closely and firmly attached together, and the phenomenon that the blade 1 automatically deflects due to the influence of wind power after the impeller rotates is avoided; after the angle of the blade 1 is adjusted, the output shaft of the motor is inserted into the sleeve 2, so that the end part of the output shaft of the motor is abutted against the end surface of the third conical gear 23, then the screw 25 is rotated, the output shaft of the motor is fixed in the sleeve 2, and meanwhile, the end part of the output shaft of the motor is firmly abutted against the end surface of the third conical gear 23, so that the stability between the first conical gear 11 and the second conical gear 21 and the third conical gear 23 is enhanced, and the self-rotation phenomenon of the blade 1 is prevented; when the impeller rotates, external wind is sucked into the axial flow fan, meanwhile, the dust is also brought into the axial flow fan, and if the dust is discharged into the sleeve 2, the dust can influence the meshing effect among the first conical gear 11, the second conical gear 21 and the third conical gear 23, so that the protective shell 26 is arranged on the sleeve 2, the protective shell 26 not only prevents the external dust from entering the sleeve 2, but also the oval protective shell 26 flows to the blades 1 by the air flow, and the air exhaust effect of the axial flow fan is improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An axial fan impeller, comprising a blade (1) and a sleeve (2), characterized in that: the sleeve (2) is in a regular hexagon shape, each outer side wall of the sleeve (2) is hinged with one blade (1), the end part of each blade (1) penetrates through the side wall of the sleeve (2) and extends into the sleeve (2), the end part of each blade (1) extending into the sleeve (2) is fixedly connected with a first conical gear (11), and the first conical gear (11) is meshed with a second conical gear (21) arranged in the sleeve (2); the second-order bevel gear (21) is hinged in the sleeve (2), and the sleeve (2) is connected with the upper end face of the second-order bevel gear (21) through a buckle (22); the synchronous change of the angle of each blade (1) is realized through the matching between the first conical gear (11) and the second conical gear (21);

a third conical gear (23) is arranged in the sleeve (2); the third conical gear (23) is positioned below the first conical gear (11), a first rod (231) with a key pin is arranged at the center of the third conical gear (23), the first rod (231) penetrates through a through hole formed in the center of the second conical gear (21), the shape of the through hole corresponds to that of the outer ring of the first rod (231), the first rod (231) is in clearance fit with the through hole, and the end part of the first rod (231) is connected with the upper end face of the second conical gear (21) through a first spring (232); through the cooperation among the third conical gear (23), the second conical gear (21) and the first spring (232), the blade (1) is further prevented from rotating automatically;

a plurality of stop blocks (24) are arranged on the inner side wall of the sleeve (2); each stop block (24) is positioned at the middle position of each inner side wall of the sleeve (2), and each stop block (24) is positioned below each first conical gear (11); in an initial state, the third conical gear (23) is meshed with the first conical gear (11), and the third conical gear (23) is clamped on the stop block (24); the third conical gear (23) is prevented from rotating through the matching between the stop block (24) and the third conical gear (23);

a second spring (111) is arranged between each first conical gear (11) and the inner side wall of the sleeve (2); each outer side wall of the sleeve (2) is attached to the connecting part of the blade (1) through a concave part and a convex part; through the matching among the second spring (111), the concave part and the convex part, the blade (1) is further prevented from rotating automatically, and the stability between the blade (1) and the outer side wall of the sleeve (2) is enhanced;

the outer side wall of the sleeve (2) is uniformly provided with two screws (25), each screw (25) penetrates through the side wall of the sleeve (2) and extends into the sleeve (2), the screws (25) are used for fastening the sleeve (2) on an external motor output shaft, so that the connection firmness between the screws is improved, meanwhile, the end part of the motor output shaft stably supports against the third conical gear (23), and the third conical gear (23) is further prevented from rotating;

an oval protective shell (26) is arranged at the end part of the sleeve (2), and the protective shell (26) is arranged close to the second-order bevel gear (21); the protective shell (26) prevents external dust from being sucked into the sleeve (2) and guides the airflow to flow onto the blade (1).