CN216518819U

CN216518819U - Double-suction fan impeller sucking from same side

Info

Publication number: CN216518819U
Application number: CN202122810972.5U
Authority: CN
Inventors: 曾玲; 王恒; 乔君正; 石亚君; 王新
Original assignee: Weihai Creditfan Ventilator Co Ltd
Current assignee: Weihai Creditfan Ventilator Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-13
Anticipated expiration: 2031-11-16

Abstract

The utility model relates to the technical field of fans, in particular to a double-suction fan impeller sucked at the same side, which comprises at least two groups of blades arranged at the same side and in the same direction, wherein a middle disc is arranged between every two adjacent groups of blades, the two ends of each blade comprise an air inlet end provided with a front disc, an air outlet end provided with a rear disc, and the inner diameter and the outer diameter of each front disc are larger than those of the middle disc and the rear disc. The utility model meets the corresponding high-flow and high-pressure operation requirements; two adjacent groups of blades are mutually promoted to mutually relay to work on the gas, so that the effect that one is added and one is larger than two is achieved, the gas flow is larger, and the pressure is stronger; simple structure, low processing cost, convenient installation and maintenance and easy popularization.

Description

Double-suction fan impeller sucking from same side

Technical Field

The utility model relates to the technical field of fans, in particular to a double-suction fan impeller sucking at the same side.

Background

At present, in some engineering projects, a large flow rate and a high pressure are required, an axial flow impeller is selected to have enough flow rate but insufficient pressure, a centrifugal impeller is selected to have enough pressure but insufficient flow rate, or the flow rate and the pressure are both satisfied but low efficiency. The common solutions for the above items are: the double-suction impeller with two-side suction is adopted, or two single-stage single-suction impellers are driven by the shaft extension of two ends of a motor. Above two schemes all are both sides and admit air, if the pipeline that admits air only has a pipeline, then the fan structure of above-mentioned two schemes is complicated, and occupation space is big, has improved product cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-suction fan impeller sucking at the same side aiming at the defects in the prior art.

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

the utility model provides a two suction fan impeller of homonymy inspiratory, includes that at least two sets of blade homonymy syntropy set up, and is adjacent two sets of be provided with well dish between the blade, both ends are provided with the front disc including the air inlet end, and the air-out end is provided with the back dish, the internal diameter and the external diameter of front disc all are greater than well dish and back dish.

Further, the blades are connected with the corresponding middle disc, the front disc and the rear disc into a whole.

Further, the inlet and outlet pressures of each set of vanes are equal.

Further, the blade comprises a first blade and a second blade, wherein the first blade and the second blade are flat blades, arc blades, ternary twisted blades or wing-shaped blades, and the first blade and the second blade are combined randomly.

Furthermore, the number of the middle discs is 1-3.

Has the advantages that: the utility model can meet the corresponding operation requirements of high flow and high pressure in a limited pipeline; two adjacent groups of blades are mutually promoted to mutually relay to work on the gas, so that the effect that one is added and one is larger than two is achieved, the gas flow is larger, and the pressure is stronger; simple structure, low processing cost, convenient installation and maintenance and easy popularization.

Drawings

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

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural view of the present invention;

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

in the figure, a is a front disc, b is a middle disc, c is a rear disc, m is a first blade, and n is a second blade.

Detailed Description

The utility model is further illustrated by the following examples and figures.

Fig. 1 to 4 show a double suction fan impeller that homonymy inhales (unilateral inhales), including at least two sets of blade homonymy settings, adjacent two sets of be provided with well dish b between the blade, both ends are provided with preceding dish an including the air inlet end, and the air-out end is provided with back dish c, the internal diameter and the external diameter of preceding dish an all are greater than well dish b and back dish c, the blade is connected as an organic wholely with well dish b, preceding dish an and back dish c that correspond.

The blade comprises a first blade m and a second blade n, wherein the first blade m and the second blade n are flat blades, arc blades, ternary twisted blades or wing-shaped blades, and the first blade m and the second blade n can be combined randomly.

The design method briefly describes: the front disc a and the rear disc c are designed according to a design method of a conventional single-stage single suction wheel; the middle disc b is determined between the front disc a and the rear disc c by a runner method, and the middle disc b is a rear wheel disc of the first blade m and a front wheel disc of the second blade n; the first blade m and the second blade n are separately designed according to a design method of a conventional blade, numerical simulation is carried out on the whole to optimize, the inlet pressure and the outlet pressure of the two blades are kept equal (an impeller shown in figure 3), and the two blades are separated to optimize respectively when the numerical simulation of the whole of the middle disc b is added to optimize (the impeller shown in figure 1).

The first blade m and the second blade n can be flat blades, arc blades, ternary twisted blades and wing-shaped blades, and the first blade m and the second blade n can be combined at will. As shown in fig. 1, the first blade m and the second blade n are both ternary twisted blades; as shown in fig. 3, the first blade m is a ternary twisted blade, and the second blade n is an airfoil-shaped blade; as shown in fig. 4, the first blade m and the second blade n are both arc-shaped blades.

The first blade m and the second blade n can be forward, radial and backward blades, and the first blade m and the second blade n can be combined at will. As shown in fig. 1, the first blade m and the second blade n are both backward-facing blades.

The number of the first blade m and the second blade n may be equal or different. As shown in fig. 1, the first blades m and the second blades n have the same number of blades and are aligned, or the first blades m and the second blades n may be staggered. As shown in fig. 3, the number of the first blade m and the second blade n is not equal.

As shown in fig. 2, (D2 a) front disc outer diameter; (D1 a) front disc inner diameter; (D2 b) a mid-disc outer diameter; (D1 b) a mid-disc inner diameter; (D2 c) a rear disc outer diameter; (D1 c) rear disc inner diameter.

The outer diameter D2a of the front disc is the largest, the outer diameter of the front disc is more than or equal to the outer diameter of the middle disc and the outer diameter of the rear disc, namely D2a is more than or equal to D2b, and D2a is more than or equal to D2 c; the inner diameter D1a of the front disc is the largest, the inner diameter of the front disc is more than or equal to the inner diameter of the middle disc and the inner diameter of the rear disc, D1a is more than or equal to D1b, and D1a is more than or equal to D1 c. For example, when the first blade m and the second blade n are both forward multi-wing arc blades, D2a = D2b = D2c, and D1a = D1b = D1c are more provided.

The number of the middle disks b is not limited to one, and may be 1 to 3. As shown in fig. 4, there are two middle disks b.

The utility model can meet the corresponding operation requirements of high flow and high pressure in a limited pipeline; two adjacent groups of blades are mutually promoted to mutually relay to work on the gas, so that the effect that one is added and one is larger than two is achieved, the gas flow is larger, and the pressure is stronger; simple structure, low processing cost, convenient installation and maintenance and easy popularization.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a two suction fan impeller of homonymy inspiratory, its characterized in that, includes at least two sets of blade homonymy settings, and is adjacent two sets of be provided with well dish between the blade, both ends are provided with the front bezel including the air inlet end, and the air-out end is provided with the back dish, the internal diameter and the external diameter of front bezel all are greater than well dish and back dish.

2. The double suction fan impeller with the same side suction as the claim 1, wherein the blades are integrally connected with the corresponding middle disk, the front disk and the rear disk.

3. A side-bled double suction fan impeller as claimed in claim 1, wherein the inlet and outlet pressures of each said set of blades are equal.

4. The double-suction fan impeller sucking on the same side as the claim 1, characterized by comprising a first blade and a second blade, wherein the first blade and the second blade are any combination of flat blades, arc-shaped blades, ternary twisted blades or wing-shaped blades.

5. The double suction fan impeller sucking at the same side as the claim 1, wherein the number of the middle discs is 1-3.