Energy-saving centrifugal impeller

Abstract

This invention provides an energy-saving centrifugal impeller, comprising: a disc body, a first guide vane, and a second guide vane; the disc body has a central column and a base; the first and second guide vanes are evenly distributed circumferentially on the disc body; the second guide vane is disposed between two adjacent first guide vanes; the height of the first guide vane is greater than the height of the second guide vane; the first guide vane consists of a first inlet section, a first diversion section, and a first outlet section; the second guide vane consists of a second diversion section and a second outlet section. Its advantages are that the front section of the first vane guides the airflow into the impeller, reducing airflow impact loss; the addition of the second vane in the middle section narrows the flow channel, enhancing the pressurization effect and reducing inlet resistance; the two vanes have identical outlet structures, allowing for uniform diffusion of high-speed airflow, resulting in smooth impeller rotation, increased impeller rotational inertia, and improved overall pressurization efficiency.

Description

Technical Field

[0001] The invention discloses an energy-saving centrifugal impeller. Background Art

[0002] A centrifugal compressor is a component that uses a high-speed rotating centrifugal impeller to drive the blades on the impeller to rotate at high speed, and works on the air to increase the air pressure. In the existing technology, the air loss is large when entering the impeller entrance, and the impeller has a large moment of inertia, which will lead to disadvantages such as long startup acceleration time and large torsional vibration, resulting in poor increase effect. Generally, the required boosting effect can be obtained by increasing the rotation speed, that is, consuming more power. Summary of the invention

[0003] The problem to be solved by the present invention is to provide an energy-saving centrifugal impeller, in which the front section of the first guide vane guides the airflow into the impeller to reduce the airflow impact loss; the second blade is added at the middle section to shrink the flow channel, enhance the supercharging effect, and reduce the intake resistance; the two blade outlet structures are the same, so that the high-speed airflow is evenly diffused, the impeller rotates smoothly, the impeller's rotational inertia is increased, and the overall supercharging efficiency is improved, thereby improving the energy utilization rate and reducing energy consumption; so as to overcome the defects of the prior art.

[0004] The present invention provides an energy-saving centrifugal impeller, comprising: a wheel disc body 100, a first guide blade 200, and a second guide blade 300; the wheel disc body 100 has a central column 110 and a bottom plate 120; the first guide blade 200 is evenly distributed on the wheel disc body 100, the inner side of the first guide blade 200 is attached to the central column 110, and the bottom of the first guide blade 200 is attached to the bottom plate 120; the second guide blade 300 is evenly distributed on the wheel disc body 100, the inner side of the second guide blade 300 is attached to the central column 110, the bottom of the second guide vane 300 is 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 the height of the second guide vane 300; the first guide vane 200 is composed of a first inlet section 210, a first diverter section 220 and a first outlet section 230; the second guide vane 300 is composed of a second diverter section 320 and a second outlet section 330; the first outlet section 230 and the second outlet section 330 are consistent in height, shape and size.

[0005] The present invention provides an energy-saving centrifugal impeller having the following characteristics: the inclination of the outer side of the first inlet section 210 of the first guide vane 200 is greater than the inclination of the inner side.

[0006] The present invention provides an energy-saving centrifugal impeller, which may also have the following characteristics: the inclination of the outer side of the first diversion section 220 is greater than the inclination of the outer side of the second diversion section 230 .

[0007] The present invention provides an energy-saving centrifugal impeller, which may also have the following characteristics: the outer contour of the first guide vane 200 is composed of two tangent arcs; the outer contour of the second guide vane 300 is consistent with the contour of the position corresponding to the first guide vane 200.

[0008] The present invention provides an energy-saving centrifugal impeller, which may also have the following characteristics: the outer diameter of the initial end of the first inlet section 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 between 1.2 and 1.5 times the outer diameter of the initial end of the first inlet section.

[0009] The present invention provides an energy-saving centrifugal impeller, which may also have the following characteristics: the outer diameter of the initial end of the first inlet section is 2.25 times the outer diameter of the wheel body 100; the outer diameter of the tail end of the first outlet section is 4 / 3 times the outer diameter of the initial end of the first inlet section.

[0010] The present invention provides an energy-saving centrifugal impeller, which may also have the following characteristics: the height of the second guide vane 300 is between 1 / 2 and 2 / 3 of the height of the first guide vane 200 .

[0011] The present invention provides an energy-saving centrifugal impeller, which may also have the following feature: the height of the second guide vane 300 is 0.6 times the height of the first guide vane 200 .

[0012] The present invention provides an energy-saving centrifugal impeller, which may also have the following characteristics: the height of the first outlet section 230 is 1 / 5 to 1 / 4 of the height of the first guide vane 200 .

[0013] The present invention provides an energy-saving centrifugal impeller. The front section of a first guide blade guides airflow into the impeller to reduce airflow impact loss; a second blade is added at the middle section to shrink the flow channel, enhance the supercharging effect, and reduce the air intake resistance; the two blades have the same outlet structure, so that the high-speed airflow is evenly diffused, the impeller rotates smoothly, the impeller rotation inertia is increased, and the total supercharging efficiency is improved, thereby improving the energy utilization rate and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a stereoscopic diagram of the energy-saving centrifugal impeller in the present invention.

[0015] Figure 2 It is a front view of the energy-saving centrifugal impeller in the present invention.

[0016] Figure 3 It is a top view of the energy-saving centrifugal impeller in the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] In this embodiment, an energy-saving centrifugal impeller includes: a wheel body 100, a first guide blade 200, and a second guide blade 300. In this embodiment, the wheel body 100, the first guide blade 200, and the second guide blade 300 are integrally formed.

[0019] The wheel body 100 has a central column 110 and a bottom plate 120. The first guide vanes 200 are evenly distributed on the wheel body 100, 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 bottom plate 120. Figure 1 As shown, a first guide cavity is formed between two adjacent first guide vanes 200. The outer contour 200a of the first guide vane 200 is composed of two tangent arcs, forming an "S" shape. Figure 2 The first guide vane 200 shown is composed of a first inlet section 210, a first splitter section 220 and a first outlet section 230. The inclination of the outer side of the first inlet section 210 of the first guide vane 200 is greater than the inclination of the inner side; that is, the first guide vane 200 is folded from the inner side to the outer side, and is narrow at the top and wide at the bottom, so that the gas is introduced into the working impeller without impact, thereby reducing the impact loss of the airflow.

[0020] The height of the first guide blade 200 is greater than the height of the second guide blade 300. The contour of the outer side of the second guide blade 300 is consistent with the contour of the corresponding position of the first guide blade 200. The second guide blades 300 are evenly distributed on the circumference of the wheel disc body 100, the inner side of the second guide blade 300 is attached to the central column 110, and the bottom of the second guide blade 300 is attached to the chassis 120. The second guide blade 300 is arranged between two adjacent first guide blades 200, and the lower half of the guide groove between the first guide blades 100 is divided again. The second guide blade 300 is composed of a second diverter section 320 and a second outlet section 330. The inclination of the outer side of the first diverter section 220 is greater than the inclination of the outer side of the second diverter section 230, and it plays the role of contracting the flow channel, enhancing the supercharging effect, and reducing the intake resistance.

[0021] 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 a volute with a gradually expanding circumference, so that the high-speed airflow is evenly expanded and the overall efficiency of supercharging is improved.

[0022] like Figure 3As shown, the outer diameter L210 of the initial end of the first inlet section 210 is 2 to 2.5 times the outer diameter 110 of the central column 110, and preferably 2.25 times. The outer diameter L230 of the tail end of the first outlet section 230 is between 1.2 and 1.5 times the outer diameter L210 of the initial end of the first inlet section 210, and preferably 4 / 3 times. It should be noted that the outer diameter L230 of the tail end of the first outlet section 230 is also the outer diameter of the second outlet section, and is also the outer diameter of the chassis 120.

[0023] The height of the second guide vane 300 is between 1 / 2 and 2 / 3 of the height of the first guide vane 200 , and preferably 0.6 times. The height of the first outlet section 230 is between 1 / 5 and 1 / 4 of the height of the first guide vane 200 .

[0024] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as limiting the present invention. After reading the above content, it will be obvious to those skilled in the art for various modifications and substitutions of the present invention. Any inventions and creations that do not exceed the spirit and scope of the present invention, non-substantial substitutions, deformations or modifications, all fall within the protection scope of the present invention.

Claims

1. An energy-saving centrifugal impeller, characterized in that: include, A wheel body (100), a first guide blade (200), and a second guide blade (300); The roulette body (100) comprises a central column (110) and a bottom plate (120); The first guide blades (200) are evenly distributed on the wheel disc body (100) around the circumference, the inner sides of the first guide blades (200) are attached to the central column (110), and the bottoms of the first guide blades (200) are attached to the bottom plate (120); The second guide blades (300) are evenly distributed on the wheel disc body (100) around the circumference, the inner sides of the second guide blades (300) are attached to the central column (110), and the bottoms of the second guide blades (300) are attached to the bottom plate (120); The second guide blade (300) is arranged between two adjacent first guide blades (200); the height of the first guide blade (200) is greater than the height of the second guide blade (300); The first guide vane (200) is composed of a first inlet section (210), a first flow splitting section (220) and a first outlet section (230); The second guide vane (300) is composed of a second flow splitting section (320) and a second outlet section (330); The first outlet section (230) and the second outlet section (330) have the same height, shape and size; The inclination of the outer side of the first inlet section (210) of the first guide vane (200) is greater than the inclination of the inner side; The inclination of the outer side of the first diversion section (220) is greater than the inclination of the outer side of the second diversion section (320).

2. The energy-saving centrifugal impeller according to claim 1, characterized in that: in, The outer contour of the first guide blade (200) is composed of two tangent circular arcs; The contour of the outer side of the second guide vane (300) is consistent with the contour of the corresponding position of the first guide vane (200).

3. The energy-saving centrifugal impeller according to claim 1, characterized in that: in, The outer diameter of the initial end of the first inlet section 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 between 1.2 and 1.5 times the outer diameter of the initial end of the first inlet section.

4. The energy-saving centrifugal impeller according to claim 3, characterized in that: in, The outer diameter of the initial end of the first inlet section is 2.25 times the outer diameter of the wheel body (100); The outer diameter of the tail end of the first outlet section is 4 / 3 times the outer diameter of the initial end of the first inlet section.

5. The energy-saving centrifugal impeller according to claim 1, characterized in that: in, The height of the second guide blade (300) is between 1 / 2 and 2 / 3 of the height of the first guide blade (200).

6. The energy-saving centrifugal impeller according to claim 1, characterized in that: The height of the second guide blade (300) is 0.6 times the height of the first guide blade (200).

7. The energy-saving centrifugal impeller according to claim 1, characterized in that: in, The height of the first outlet section (230) is 1 / 5 to 1 / 4 of the height of the first guide vane (200).

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