Impellor used for centrifugal pump and centrifugal type fan

The technology of a centrifugal fan and a centrifugal pump is applied to the impeller. In the field, it can solve the problems of low operating efficiency, increased friction surface, and consumption of useless work, so as to achieve the effects of improving operating efficiency, increasing vacuum degree, and accelerating flow velocity.

Inactive Publication Date: 2006-04-12
陈瑜
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Problems solved by technology

[0006] 4. The axial width at the outlet of the outer diameter of the traditional impeller becomes smaller, and the center of the outlet is not at the center of the volute, which will cause the following disadvantages. The former cannot make full use of the kinetic energy of the water leaving the outer diameter of the impeller, because the narrow water spray How can we impel the water in the large pipe to advance, so we can only convert the kinetic energy into static pressure, and then press the water to the outlet pipe by the static pressure
And because the axial width of the impeller outlet is not in the center of the volute, the fluid will be spirally rotated horizontally along the flow channel of the volute to the one-sided water inlet. For those pumps with small flow and high lift, this phenomenon will It is particularly serious, so it consumes a lot

Method used

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  • Impellor used for centrifugal pump and centrifugal type fan
  • Impellor used for centrifugal pump and centrifugal type fan
  • Impellor used for centrifugal pump and centrifugal type fan

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[0025] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings.

[0026] Such as figure 2 with image 3 As shown, the impeller for centrifugal pumps and centrifugal fans of the present invention includes a wheel shell 1, a web 2 and two or more blades 3 mounted on the web 2, and one of the adjacent blades 3 The flow channel 4 is formed in between. The blade 3 is composed of the main blade 31 and the auxiliary blade 32. The main blade 31 and the auxiliary blade 32 overlap at the small radius end of the impeller. As the radius of the impeller increases, the main blade 31 and the auxiliary blade The distance between 32 becomes wider, and the main blade 31 and the auxiliary blade 32 are connected by a sealing plate 5 at the maximum radius of the impeller. In a preferred embodiment, the overlapping thickness of the main blade 31 and the auxiliary blade 32 at the small radius end of the impeller is equal to the thickness of a ma...

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Abstract

A blade wheel for centrifugal pump (or blower) is composed of hub, webs and two or more blades consisting of the primary and secondary blades, which are overlapped at the small radium position and connected by a sealing plate at the maximal radium position. Its advantages are high efficiency and low energy consumption.

Description

technical field [0001] The invention mainly relates to the field of centrifugal pumps and centrifugal fans, in particular to an impeller for centrifugal pumps and centrifugal fans. Background technique [0002] Since the advent of centrifugal pumps and centrifugal fans, the structure of the impeller, the core component of its work, has been based on a hypothetical theoretical basis, which is to make the number of impeller blades infinitely large, and the thickness of the blades is infinitely small, thereby eliminating water in the impeller. The inner vortex can improve the working efficiency of the whole centrifugal pump to achieve the effect of energy saving. But in the actual structure, the number of blades of the impeller is very few, that is, under the effective volume of the overall design of the centrifugal pump, the number of blades is limited, and the blades also have a certain thickness. Because of the discrepancy between theory and reality, people have generally b...

Claims

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Application Information

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IPC IPC(8): F04D29/24F04D29/30
Inventor 陈永生陈瑜
Owner 陈瑜
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