CN210423143U

CN210423143U - Centrifugal fan impeller

Info

Publication number: CN210423143U
Application number: CN201920980390.1U
Authority: CN
Inventors: 王书勤; 杨坚; 张巍强; 何天华
Original assignee: Changzhou Xiangming Intelligent Power Co ltd
Current assignee: Changzhou Xiangming Intelligent Power Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-28
Anticipated expiration: 2029-06-27

Abstract

The utility model relates to a centrifugal fan impeller, which is provided with an upper impeller disc and a lower impeller disc, wherein a plurality of blades are distributed between the upper impeller disc and the lower impeller disc along the circumference of a rotating axis, and an air outlet is formed between two adjacent blades; the method is characterized in that: the impeller lower disc is provided with a press-fitting flange for press-fitting of a power supply motor and formed by injection molding with the impeller lower disc integrally, and the press-fitting flange is coaxial with the impeller lower disc and extends downwards along the axis of the impeller lower disc. The utility model discloses middling pressure dress flange downwardly extending, the effectual not enough problem of mounted position of fan in the installation has better suitability.

Description

Centrifugal fan impeller

Technical Field

The utility model relates to a centrifugal fan impeller.

Background

The centrifugal fan is a driven fluid machine which can increase the gas pressure and discharge the gas by means of the input mechanical energy. The centrifugal fan is mainly used for changing axial airflow into circumferential airflow, and an impeller of the centrifugal fan is a key component for changing the airflow direction. With the change of the use environment and the continuous improvement of the user's demand, the centrifugal fan needs higher efficiency, lower noise and better safety. However, in the existing centrifugal fan, the press-fitting flange of the lower disk of the impeller extends towards the upper disk of the impeller, but when some motors with short sizes are installed, the installation positions of the motors are limited, the installation and the use of the fan are affected, and the centrifugal fan is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a structure is exquisite, and practical convenient centrifugal fan impeller.

Realize the utility model discloses the technical scheme of purpose is: the utility model is provided with an upper impeller disc and a lower impeller disc, a plurality of blades are distributed along the circumference of a rotating axis between the upper impeller disc and the lower impeller disc, and an air outlet is formed between two adjacent blades; the impeller lower disc is provided with a press-fitting flange for press-fitting of a power supply motor and formed by injection molding with the impeller lower disc integrally, and the press-fitting flange is coaxial with the impeller lower disc and extends downwards along the axis of the impeller lower disc.

And a flanging is arranged at one end of the press-fitting flange, which is connected with the lower impeller disc in an injection molding manner, and a plurality of connecting holes for injection molding connection with the lower impeller disc are arranged on the flanging along the axis of the press-fitting flange.

The upper impeller disc and/or the lower impeller disc are/is provided with a plurality of filling grooves which are distributed along the circumference of a rotating axis and can be used for filling a balance, and the filling grooves are arranged on the outer ring of the upper impeller disc and/or the lower impeller disc.

The upper impeller disc and/or the lower impeller disc are/is provided with an annular groove, a plurality of blocking pieces are distributed on the annular groove along the circumference of the rotating axis, and each blocking piece is arranged in the annular groove and divides the annular groove into a plurality of filling grooves.

The upper end surface of the impeller upper disc is provided with a pointer used for indicating the rotating direction.

The utility model discloses has positive effect: (1) the utility model discloses a downwardly extending's pressure equipment flange can add the external rotor electric machine of different length in the pressure equipment to solve among the prior art because the inconvenient problem of pressure equipment that leads to of external rotor electric machine's different in size, simultaneously, also can reduce when using and cause the problem that the impeller interfered because of the external rotor electric machine is short.

(2) The utility model discloses an one end of being connected of moulding plastics at pressure equipment flange and impeller lower wall sets up the turn-ups to be equipped with a plurality ofly on the turn-ups and can be when moulding plastics, supply the material of moulding plastics to pass back and impeller lower wall fixed connection's connecting hole, thereby strengthened being connected of pressure equipment flange and impeller lower wall, the effectual stability of being connected that has improved prevents that the motor from taking place to rock in pressure equipment and use.

(3) The utility model discloses a to fill the groove and separate the formation through the cooperation of ring channel and baffle, can guarantee on the one hand that the shape and the volume in each packing groove are the same, prevent to appear packing when adjusting balance uneven and produce the regulation deviation, on the other hand also is greatly increased the quantity in packing groove, is favorable to dynamic balance's regulation.

(4) The utility model discloses a set up the direction indicator of rotation direction on the impeller hanging wall, prevent that operating personnel from appearing the installation mistake in the installation.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

Fig. 1 is a sectional view of a centrifugal fan impeller of the present invention;

fig. 2 is a schematic structural view of a centrifugal fan impeller of the present invention;

fig. 3 is a top view of the centrifugal fan impeller of the present invention;

FIG. 4 is an enlarged view at B in FIG. 3;

fig. 5 is a schematic structural view of the middle press-fit flange of the present invention;

fig. 6 is a schematic diagram of the relative position of the centrifugal fan impeller and the outer rotor motor in the press-fitting of the present invention;

FIG. 7 is a schematic diagram of the relative positions of an impeller and an outer rotor motor of a conventional centrifugal fan during press mounting;

fig. 8 is a schematic structural diagram of a press-mounting flange in an impeller of a conventional centrifugal fan.

Detailed Description

Referring to fig. 1 to 4, the utility model has an upper impeller plate 1 and a lower impeller plate 2, a plurality of blades 3 are distributed along the circumference of the rotation axis between the upper impeller plate 1 and the lower impeller plate 2, and an air outlet is formed between two adjacent blades 3; the impeller upper disc 1 and/or the impeller lower disc 2 are provided with a plurality of filling grooves 12 which are distributed along the circumference of a rotating axis and can be used for filling a balance, the filling grooves 12 are arranged on the outer ring of the impeller upper disc 1 and/or the impeller lower disc 2, the impeller upper disc 1 and/or the impeller lower disc 2 are provided with annular grooves 13, a plurality of blocking pieces 14 are distributed on the annular grooves 13 along the circumference of the rotating axis, each blocking piece 14 is arranged in the annular groove 13 and equally divides the annular groove 13 into a plurality of filling grooves 12, the upper end surface of the upper impeller disc 1 is provided with a pointer 11 for indicating the rotating direction.

The utility model discloses a theory of operation: the utility model discloses a set up downwardly extending's pressure equipment flange 4 on impeller lower wall 2, adapt to not unidimensional, the pressure equipment of the motor of equidimensional not,

pressure equipment flange

4 and 2 integrative injection moulding of impeller lower wall, and the one end of moulding plastics with impeller lower wall 2 on the pressure equipment flange 4 and being connected has turn-ups 41, have connecting hole 411 on the turn-ups 41, can pass after connecting hole 411 through the material of moulding plastics when moulding plastics with pressure equipment flange 4 and the firm connection of impeller lower wall 2 together, then through filling balanced material in filling groove 12, for example, balanced mud comes to carry out balanced regulation to fan wheel.

The utility model discloses an installation state contrasts with prior art and explains as follows:

fig. 7 is a schematic diagram of press fitting of a flange and an outer rotor motor in an existing centrifugal fan impeller, fig. 8 is a schematic diagram of a press fitting flange in an existing centrifugal fan impeller, where centrifugal fan impellers need to be installed in some places, if an outer rotor motor with a short axial dimension is selected, because the existing press fitting flange 4a extends upwards, a mounting plane 5b of the outer rotor motor can be sunk into a bottom surface 2b of a lower disc of an impeller in the existing centrifugal fan impeller, the lower disc 2a of the impeller can interfere due to insufficient axial dimension, and therefore installation and use are affected.

Fig. 6 is the utility model discloses the schematic diagram of pressure equipment flange and external rotor electric machine pressure equipment, fig. 5 is the utility model discloses well centrifugal fan impeller middling pressure equipment flange's schematic diagram, it is visible when selecting the external rotor electric machine that uses the axial dimension short, because pressure equipment flange 4 downwardly extending, external rotor electric machine's mounting plane 5a can be followed the utility model discloses well impeller lower wall 2's lower wall plane 2a stretches out to make impeller lower wall 2 can not take place to interfere, from not influencing the installation and use.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A centrifugal fan impeller is provided with an upper impeller disc (1) and a lower impeller disc (2), wherein a plurality of blades (3) are distributed between the upper impeller disc (1) and the lower impeller disc (2) along the circumference of a rotating axis, and an air outlet is formed between two adjacent blades (3); the method is characterized in that: the impeller lower disc (2) is provided with a press fitting flange (4) for press fitting of a power supply machine and integrated injection molding with the impeller lower disc (2), the press fitting flange (4) is coaxial with the impeller lower disc (2), and extends downwards along the axis of the impeller lower disc (2).

2. A centrifugal fan impeller according to claim 1, wherein: one end of the press fitting flange (4) connected with the lower impeller disc (2) in an injection molding mode is provided with a flanging (41), and a plurality of connecting holes (411) used for injection molding connection with the lower impeller disc (2) are formed in the flanging (41) along the axis of the press fitting flange (4).

3. A centrifugal fan impeller according to claim 1, wherein: the impeller upper disc (1) and/or the impeller lower disc (2) are/is provided with a plurality of filling grooves (12) which are distributed along the circumference of a rotating axis and can be used for filling a balance, and the filling grooves (12) are arranged on the outer ring of the impeller upper disc (1) and/or the impeller lower disc (2).

4. A centrifugal fan impeller according to claim 3, wherein: the impeller upper disc (1) and/or the impeller lower disc (2) are/is provided with an annular groove (13), a plurality of blocking pieces (14) are distributed on the annular groove (13) along the circumference of a rotating axis, and each blocking piece (14) is arranged in the annular groove (13) and equally divides the annular groove (13) into a plurality of filling grooves (12).

5. A centrifugal fan impeller according to claim 1, wherein: the upper end face of the impeller upper disc (1) is provided with a pointer (11) used for indicating the rotating direction.