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Low-noise volume flow rate throttling of fluid-carrying pipes

一种体积流率、流体的技术，应用在噪声的抑制、运输和包装、气流控制元件等方向

Inactive Publication Date: 2010-04-21
AIRBUS OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this known throttle plate is problematic because of the broadband noise level due to the pressure drop and the inflow turbulence, which is caused by strong eddies that often form behind the plate, e.g. figure 1 shown

Method used

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  • Low-noise volume flow rate throttling of fluid-carrying pipes
  • Low-noise volume flow rate throttling of fluid-carrying pipes
  • Low-noise volume flow rate throttling of fluid-carrying pipes

Examples

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Embodiment Construction

[0024] First, refer to figure 1 A brief description of known single-orifice plates used to date for reducing volumetric flow rates in climate control systems is briefly described. figure 1 A branch pipe 4 of a piping system (not further shown) of a climate control system is shown. The single-orifice plate 1 is installed in a branch pipe 4 with a fluid flow Q flowing against the single-orifice plate from the left. The single-hole plate 1 reduces the amount of the inflow fluid Q so that after the single-hole plate 1 a reduced volumetric flow rate q flows. The known single-hole restrictor plates of this type have very thin thicknesses of the order of 0.7 mm, which leads to a sudden slowing down of the volume flow rate due to a very sudden pressure drop, which leads to the formation of relatively strong vortex. These vortices often cause very loud noises, but this should be avoided as much as possible.

[0025] In order to prevent such noise generation due to a sudden pressure...

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Abstract

The present invention relates to a fluid throttle screen (2) for low-noise control of a fluid volume flow rate (Q) in a pipe and the use of such a throttle screen (2) in an aircraft climate control system. In addition, the present invention relates to a climate control system in an aircraft in whose pipe system at least one such throttle screen (2) is installed. The throttle screen (2) according to the present invention comprises multiple friction elements (3) extending longitudinally in the flow direction, which are situated at a distance to one another in such a way that a fluid is throttledcontinuously over the extension of the fluid throttle screen (2) as a result of friction on the individual friction elements (3).

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of the filing dates of German Patent Application No. 102005046728.8, filed September 29, 2005, and U.S. Provisional Patent Application No. 60 / 722,024, filed September 29, 2005, the disclosures of which are at This is incorporated herein by reference. technical field [0003] The present invention generally relates to the technical fields of fluid mechanics and acoustics. More specifically, the invention relates to a throttle plate by means of which the volumetric flow rate in a fluid conveying line can be reduced in a low-noise manner. Furthermore, the invention relates to the use of such a throttle plate in a climate control system of an aircraft, as well as to a climate control system for an aircraft in which at least one branch of a fluid delivery pipe is equipped with the above-mentioned means for controlling Throttle plate for volume flow. Background technique [0004] Climate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F13/24B64D13/00B64D13/08F24F13/08
CPCF24F13/24F24F13/08B64D13/00
Inventor 马丁·菲特尔克劳斯·博克
Owner AIRBUS OPERATIONS GMBH
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