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Cylindrical flap with structured rough surfaces

An air flow control device, air technology, used in transportation and packaging, air handling equipment, heating/cooling equipment, etc., can solve problems such as insufficient noise reduction effect

Inactive Publication Date: 2008-08-13
VALEO KLIMASYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above measures can achieve good noise reduction effects in individual cases, in many cases the above measures are not enough to achieve the expected noise reduction effect

Method used

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  • Cylindrical flap with structured rough surfaces
  • Cylindrical flap with structured rough surfaces
  • Cylindrical flap with structured rough surfaces

Examples

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Effect test

Embodiment Construction

[0021] 1 shows a sectional view of an air inlet housing with a fresh air / circulating air control device for a heating, ventilation and / or air conditioning system of a vehicle, which is an airflow control device according to the invention A preferred application of .

[0022] The air flow control device comprises a cylindrical or shell-type valve 20 and an air channel which is delimited by the air inlet housing 10 , in the embodiment shown the fresh air supply channel opening is shown. The device shown conveys fresh or recirculated air into the vehicle interior by means of a blower, indicated only by fan wheel 5 in the figure. For closing / cutting off the fresh air supply, a cylinder valve or shell valve 20 is provided in a known manner, which has a first surface which can sealingly engage with the first surface sections 11 , 12 , 13 , 14 of the air channel Sections 21, 22, 23, 24. Furthermore, in the embodiment shown, the air channel also includes a second surface section 17 ...

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Abstract

The invention relates to an airflow control means, in particular for a motor vehicle heating, ventilation and / or air-conditioning system with an air flap (20) arranged in an air duct with first surface sections (11, 12, 13, 14, 21, 22, 23, 24) for mutual engagement and second surface sections (17, 26, 27), which do not engage with each other, whereby surface structure elements (28) are embodied on at least one second surface section (27).

Description

technical field [0001] The invention relates primarily to an air flow control device, in particular for a heating, ventilation and / or air conditioning system of a vehicle. Such an air flow control device usually includes an air valve arranged in the air passage, and the air valve is used to increase or decrease the net cross section of the air passage. Background technique [0002] In recent years, in the field of automobile heating equipment, ventilation equipment and / or air conditioning equipment, various efforts have been made to avoid noise generation, and it has been suggested that various noise reduction equipment should be provided, such as Helm Holtz resonator (Helmholz-Resonator) or other similar equipment. In addition, in order to avoid noise generation on the air valve, the edge area is specially designed to provide an irregular structure that avoids the whistling noise immediately before the opening moment, because the gap formed initially has an irregular shape...

Claims

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Application Information

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IPC IPC(8): B60H1/00B60H
CPCB60H1/00685B60H2001/006B60H2001/007
Inventor 安德列亚斯·菲纳
Owner VALEO KLIMASYST
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