CN213331673U

CN213331673U - Energy-saving centrifugal impeller

Info

Publication number: CN213331673U
Application number: CN202020813188.2U
Authority: CN
Inventors: 张清源
Original assignee: Seize Compressor Shanghai Co ltd
Current assignee: Seize Compressor Shanghai Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-06-01
Anticipated expiration: 2030-05-15

Abstract

The utility model provides an energy-conserving centrifugal impeller, include: the wheel disc comprises a wheel disc body, a first guide vane and a second guide vane; the wheel disc body is provided with a central column body and a chassis; the first guide vane and the second guide vane are uniformly distributed on the wheel disc body in the circumferential direction; the second guide vanes are arranged between two adjacent first guide vanes; the height of the first guide vane is greater than that of the second guide vane; the first guide vane consists of a first inlet section, a first flow dividing section and a first outlet section; the second guide vane is composed of a second flow dividing section and a second outlet section. The impeller has the advantages that the front section of the first blade guides airflow into the impeller, so that the impact loss of the airflow is reduced; the second blade is added at the middle section position to play the roles of contracting the flow channel, enhancing the supercharging effect and reducing the air inlet resistance; the two blade outlet structures are the same, so that high-speed airflow is uniformly diffused, the impeller rotates stably, the rotation inertia of the impeller is increased, and the total supercharging efficiency is improved.

Description

Energy-saving centrifugal impeller

Technical Field

The utility model discloses an energy-conserving centrifugal impeller.

Background

The centrifugal compressor is a component which utilizes a centrifugal impeller rotating at a high speed to drive blades on the impeller to rotate at a high speed to apply work to air so as to improve the air pressure. In the prior art, the loss is large when air enters an inlet of the impeller, the rotational inertia of the impeller is large, and the defects of long starting acceleration time, large torsional vibration and the like can be caused, so that the increase effect is poor. The required supercharging effect can generally be achieved by increasing the rotational speed, i.e. by a more powerful energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of providing an energy-saving centrifugal impeller, wherein the front section of a first guide vane guides airflow into the impeller, so that the impact loss of the airflow is reduced; the second blade is added at the middle section position to play the roles of contracting the flow channel, enhancing the supercharging effect and reducing the air inlet resistance; the two blade outlets have the same structure, so that high-speed airflow is uniformly diffused, the impeller rotates stably, the rotation inertia of the impeller is increased, the total supercharging efficiency is improved, the energy utilization rate is improved, and the energy consumption is reduced; to overcome the disadvantages of the prior art.

The utility model provides an energy-conserving centrifugal impeller, include: the turbine disc comprises a wheel disc body 100, a first guide vane 200 and a second guide vane 300; the wheel disc body 100 has a center cylinder 110 and a bottom disc 120; the first guide vanes 200 are uniformly distributed on the wheel disc body 100 on the circumference, the inner sides of the first guide vanes 200 are attached to the central column 110, and the bottoms of the first guide vanes 200 are attached to the chassis 120; the second guide vanes 300 are uniformly distributed on the disk body 100 on the circumference, the inner sides of the second guide vanes 300 are attached to the central column 110, and the bottoms of the second guide vanes 300 are attached to the base plate 120; the second guide vanes 300 are disposed between two adjacent first guide vanes 200; the height of the first guide vane 200 is greater than that of the second guide vane 300; the first guide vane 200 is composed of a first inlet guide section 210, a first flow dividing section 220, and a first outlet section 230; the second guide vane 300 is composed of a second flow dividing section 320 and a second outlet section 330; the first outlet section 230 and the second outlet section 330 are uniform in height, shape and size.

The utility model provides an energy-conserving centrifugal impeller has such characteristic: the outer side of the first inlet guide section 210 of the first guide vane 200 has a greater inclination than the inner side.

The utility model provides an energy-conserving centrifugal impeller can also have such characteristic: the inclination of the outer side of the first flow subsection 220 is greater than the inclination of the outer side of the second flow subsection 320.

The utility model provides an energy-conserving centrifugal impeller can also have such characteristic: the outline of the outer side of the first guide vane 200 is formed by two tangent arcs; the outer side of the second guide vane 300 has a contour corresponding to the contour of the corresponding position of the first guide vane 200.

The utility model provides an energy-conserving centrifugal impeller can also have such characteristic: the outer diameter of the initial end of the first inlet guide section is 2 to 2.5 times of the outer diameter of the central cylinder 110; the outer diameter of the tail end of the first outlet section is 1.2 times to 1.5 times of the outer diameter of the initial end of the first inlet guide section.

The utility model provides an energy-conserving centrifugal impeller can also have such characteristic: the outer diameter of the initial end of the first inlet guide section is 2.25 times of the outer diameter of the wheel disc body 100; the outer diameter of the tail end of the first outlet section is 4/3 times of the outer diameter of the initial end of the first inlet guide section.

The utility model provides an energy-conserving centrifugal impeller can also have such characteristic: the height of the second guide vane 300 is between 1/2 and 2/3 of the height of the first guide vane 200.

The utility model provides an energy-conserving centrifugal impeller can also have such characteristic: the second guide vane 300 has a height 0.6 times the height of the first guide vane 200.

The utility model provides an energy-conserving centrifugal impeller can also have such characteristic: the first outlet section 230 has a height 1/5 to 1/4 of the height of the first guide vane 200.

The utility model provides an energy-saving centrifugal impeller, wherein the front section of a first guide vane guides the air flow into the impeller, so that the impact loss of the air flow is reduced; the second blade is added at the middle section position to play the roles of contracting the flow channel, enhancing the supercharging effect and reducing the air inlet resistance; the two blade outlet structures are the same, so that high-speed airflow is uniformly diffused, the impeller rotates stably, the rotation inertia of the impeller is increased, the total efficiency of pressurization is improved, the utilization rate of energy is improved, and the energy consumption is reduced.

Drawings

Fig. 1 is a perspective view of an energy-saving centrifugal impeller according to the present invention.

Fig. 2 is a front view of the energy-saving centrifugal impeller of the present invention.

Fig. 3 is a top view of the energy-saving centrifugal impeller of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings and specific embodiments.

In this embodiment, an energy-saving centrifugal impeller includes: the turbine disk comprises a wheel disk body 100, a first guide vane 200 and a second guide vane 300. In this embodiment, the disk body 100, the first guide vane 200, and the second guide vane 300 are integrally formed.

The wheel body 100 has a center post 110 and a bottom plate 120. The first guide vanes 200 are uniformly distributed on the disk body 100 along the circumference, the inner side of the first guide vanes 200 is attached to the central column 110, and the bottom of the first guide vanes 200 is attached to the base plate 120. As shown in fig. 1, a first guide cavity is formed between two adjacent first guide vanes 200. The outer profile 200a of the first guide vane 200 is formed by two tangent arcs and is in an "S" shape. As shown in fig. 2, the first guide vane 200 is composed of a first inlet guide section 210, a first flow-dividing section 220, and a first outlet section 230. The outer side of the first inlet guide section 210 of the first guide vane 200 has a greater inclination than the inner side; that is, the first guide vane 200 is turned over from the inside to the outside, has a narrow top and a wide bottom, and guides the gas into the working impeller without impact, thereby reducing the gas flow impact loss.

The height of the first guide vane 200 is greater than the height of the second guide vane 300. The outer side of the second guide vane 300 has a contour corresponding to the contour of the corresponding position of the first guide vane 200. The second guide vanes 300 are uniformly distributed on the disk body 100 along the circumference, the inner side of the second guide vanes 300 is attached to the central column 110, and the bottom of the second guide vanes 300 is attached to the base plate 120. The second guide vane 300 is disposed between two adjacent first guide vanes 200, and divides the lower half of the guide groove between the first guide vanes 100 again. The second guide vane 300 is composed of a second flow dividing section 320 and a second outlet section 330. The inclination of the outer side of the first flow dividing section 220 is greater than that of the outer side of the second flow dividing section 230, and functions to constrict the flow path, enhance the pressurization effect, and reduce the intake resistance.

The first outlet section 230 and the second outlet section 330 have the same height, shape and size and are both in the shape of volute with gradually expanding circumference, so that the high-speed airflow is uniformly diffused, and the total efficiency of pressurization is improved.

As shown in FIG. 3, the initial end outer diameter L210 of the first inlet guide section 210 is 2 to 2.5 times, preferably 2.25 times, the outer diameter 110 of the central cylindrical body 110. The outer diameter L230 of the trailing end of the first outlet section 230 is between 1.2 times and 1.5 times, preferably 4/3 times, the outer diameter L210 of the initial end of the first inlet guide section 210. It should be noted that the outer diameter L230 at the tail end of the first outlet section 230 is also the outer diameter of the second outlet section, which is also the outer diameter of the bottom plate 120.

The height of the second guide vane 300 is between 1/2 and 2/3 times the height of the first guide vane 200, preferably 0.6 times. The first outlet section 230 has a height 1/5 to 1/4 of the height of the first guide vane 200.

While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Any creation of the utility model, insubstantial replacement, deformation or modification without exceeding the scope of the spirit of the utility model all fall into the protection scope of the utility model.

Claims

1. An energy-saving centrifugal impeller is characterized in that: the turbine disc comprises a disc body (100), a first guide vane (200) and a second guide vane (300);

wherein the wheel disc body (100) has a center cylinder (110) and a bottom disc (120);

the first guide vanes (200) are uniformly distributed on the wheel disc body (100) in the circumferential direction, the inner sides of the first guide vanes (200) are attached to the central column (110), and the bottoms of the first guide vanes (200) are attached to the chassis (120);

the second guide vanes (300) are uniformly distributed on the wheel disc body (100) in the circumferential direction, the inner sides of the second guide vanes (300) are attached to the central column body (110), and the bottoms of the second guide vanes (300) are attached to the chassis (120);

the second guide vane (300) is arranged between two adjacent first guide vanes (200); the height of the first guide vane (200) is greater than that of the second guide vane (300);

the first guide vane (200) is composed of a first inlet guide section (210), a first flow dividing section (220) and a first outlet section (230);

the second guide vane (300) is formed by a second flow dividing section (320) and a second outlet section (330);

the first outlet section (230) and the second outlet section (330) are uniform in height, shape and size.

2. The energy efficient centrifugal impeller of claim 1, wherein:

wherein the inclination of the outer side of the first inlet guide section (210) of the first guide vane (200) is greater than the inclination of the inner side.

3. The energy efficient centrifugal impeller of claim 1, wherein:

wherein the inclination of the outer side of the first flow-dividing section (220) is greater than the inclination of the outer side of the second flow-dividing section (320).

4. The energy efficient centrifugal impeller of claim 1, wherein:

the outer profile of the first guide vane (200) is formed by two tangent circular arcs;

the outline of the outer side of the second guide vane (300) is consistent with the outline of the position corresponding to the first guide vane (200).

5. The energy efficient centrifugal impeller of claim 1, wherein:

wherein the first inlet guide section initial end outer diameter is 2 to 2.5 times the outer diameter of the central cylinder (110);

the outer diameter of the tail end of the first outlet section is 1.2 times to 1.5 times of the outer diameter of the initial end of the first inlet guide section.

6. The energy efficient centrifugal impeller of claim 5, wherein:

wherein the outer diameter of the initial end of the first inlet guide section is 2.25 times of the outer diameter of the wheel disc body (100);

the outer diameter of the tail end of the first outlet section is 4/3 times of the outer diameter of the initial end of the first inlet guide section.

7. The energy efficient centrifugal impeller of claim 1, wherein:

wherein the height of the second guide vane (300) is between 1/2 and 2/3 of the height of the first guide vane (200).

8. The energy efficient centrifugal impeller of claim 1, wherein:

the height of the second guide vane (300) is 0.6 times of the height of the first guide vane (200).

9. The energy efficient centrifugal impeller of claim 1, wherein:

wherein the first outlet section (230) has a height 1/5 to 1/4 of the first guide vane (200) height.