Patent ID: 9067678
Filing Date: 2015-06-30
Classification: B64D,F24F

Abstract:
1. An air guiding element for an aircraft air-conditioning system, comprising: a distributing pipe having an air inlet opening arranged in the region of an end face of the distributing pipe and an air discharge opening arranged in the region of a generated surface of the distributing pipe, a flow diverting element having a first section connected to the air discharge opening of the distributing pipe and a second section arranged downstream of the first section relative to the direction of the air flow through the air guiding element, the second section being configured to deflect the air as it flows through the second section at an angle of approximately 45 to 135° relative to the direction of the air flow through the first section, and a diffuser which is arranged downstream of the second section of the flow diverting element relative to the direction of the air flow through the air guiding element and is connected to an air outlet opening, wherein the diffuser has a flow cross-section widening in the direction of the air flow from the air discharge opening to the air outlet opening, wherein at least one of the flow diverting element and the diffuser includes a side wall that is composed at least in sections of a sound-absorbing foam material, the side wall of sound-absorbing foam material defining a surface facing at least one of an interior space of the flow diverting element and an interior space of the diffuser, the sound-absorbing foam material being provided with a perforated cover in the form of a perforated laminate applied only to the surface of the sound-absorbing foam material facing at least one of an interior space of the flow diverting element and an interior space of the diffuser so as to protect the surface of the sound-absorbing foam material from damaging effects caused by air flow through the flow diverting element and diffuser, wherein there are arranged in the flow diverting element a plurality of webs which extend parallel to the flow direction of the air through the flow diverting element, and wherein the webs are defined by elongated L-shaped plate elements extending across the interior space of the flow diverting element to subdivide the interior space into a plurality of parallel guiding channels extending throughout the second section to deflect the air flow through the angle of approximately 45 to 135°, the webs being oriented to block cross flow between the guiding channels to minimize momentum of air flow in the direction of the air flow through the distributing pipe, and the guiding channels delivering deflected air flow directly into the diffuser.