Patent ID: 8303384
Filing Date: 2012-11-06
Classification: B01F,B64D,F24F,Y02T,Y10T

Abstract:
1. A device for mixing fresh air and heating air in a ventilation system installed on board an aircraft, the device comprising: a fresh air source and a source of heating air; a fresh air inlet fluidly connected with the fresh air source to supply the fresh air, a heating air supply body supplying the heating air from the source of heating air, and a mixed air outlet for delivering mixed fresh air and heating air from the device, wherein the heating air supply body includes a first portion and a second portion which constitute a flow resistance to the fresh air, wherein the second portion is formed as a closed hollow body with a plurality of heating air supply openings and is connected to the first portion at a downstream end of the first portion, viewed in the flow direction of the heating air, wherein the number of heating air supply openings in a downstream area of the second portion is greater than in an upstream area of the second portion, and a surface density of the heating air supply openings at the second portion increases in the flow direction of the fresh air, and wherein the first portion is formed as a supply line extending into the device to the second portion, the supply line defining, as seen in the flow direction of the fresh air, a streamlined shape in the form of a teardrop cross-section.