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Centrifugal rotor

Inactive Publication Date: 2016-05-26
LINDE AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention aims to minimize pressure drop and improve the performance of a compression stage by using a centrifugal rotor and axial diffuser. The design of the outlet channels allows for a smooth transition of flow direction and reduces losses during the pressure change. The rotor is simple to produce with circular flanges and vanes oriented to guide the fluid flow. The edges of the flanges have a greater diameter to accelerate the fluid exiting the rotor. This design promotes a more uniform distribution of velocity and requires less mechanical power to achieve a given compression ratio.

Problems solved by technology

One technical problem encountered with such a structure is that it is the source of pressure loss in the compressed fluid.

Method used

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Examples

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Embodiment Construction

[0027]Those skilled in the art will recognize a centrifugal rotor 2 in FIG. 1 mounted inside a housing 4, for example a compressor housing, and a shaft 6 having a longitudinal axis 8. The following description will be made with reference to a working air compressor (or more generally a gaseous fluid compressor), but this invention may also be applied to pumps for liquids.

[0028]When the centrifugal rotor 2 is rotated by the shaft 6, the air (or other gaseous fluid) is drawn into the centrifugal rotor 2 in a longitudinal direction relative to the longitudinal axis 8, and is driven in a mixed flow motion in the centrifugal rotor 2 while rotating and appear radially with respect to the longitudinal axis 8.

[0029]The centrifugal rotor 2 is built in one piece and comprises a hub 10, a first flange or upstream flange 12, a second flange or downstream flange 14 and vanes 16.

[0030]The hub 10 enables a connection between the shaft 6 and the centrifugal rotor 2. It has an overall circular, cyli...

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Abstract

A centrifugal rotor includes a hub (10) having a longitudinal axis (8), a fluid inlet (20), a first flange referred to as upstream flange (12) and having an opening (22) around the hub (10), a second flange referred to as downstream flange (14) separated from the first flange by blades (16) thus forming ducts each delimited by the first flange (12), the second flange (14) and two blades (16) and extending from the fluid inlet (20) to a peripheral outlet (26), near the peripheral outlet (26) the first flange (12) having a concave zone (32) facing towards the ducts whereas the second flange (14) has a convex zone (34) facing towards the ducts.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a centrifugal rotor.[0002]The technical field of this invention is that of the fluid, liquid or gaseous compression. The invention therefore relates to both pumps as well as compressors which make a supply of liquid or gas respectively possible, from a given pressure to a higher pressure.[0003]There are many techniques to increase the pressure of a fluid. A common technique consists in centrifuging the fluid upon which stress is exerted which in turn causes an increase in its pressure. For the implementation of this technique, there are many different structures of pumps and compressors depending upon many parameters including the related fluid, the environment (size, etc.) and desired performance (compression rate, etc.). Subsequently, we will focus on pumps and compressors comprising at least one centrifugal rotor associated with an axial diffuser.[0004]A centrifugal rotor is a rotor having an axis of rotation. It i...

Claims

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Application Information

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IPC IPC(8): F04D29/24F04D29/30F04D29/22F04D29/28F04D17/08F04D1/00
CPCF04D29/24F04D17/08F04D29/30F04D29/2205F04D29/284F04D1/00F04D29/2261F04D29/2272
Inventor SGAMBATI, STEPHANE
Owner LINDE AG
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