System and method for air conditioning an aircraft cabin with improved cooling capacity

  • US 9,085,368 B2
  • Filed: 10/13/2009
  • Issued: 07/21/2015
  • Est. Priority Date: 10/29/2008
  • Status: Active Grant
First Claim
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1. A system for air conditioning an aircraft cabin in an aircraft, the system comprising:

  • a central mixer and first and second local mixers, the first and second local mixers being formed separate from each other and being positioned at different locations in the aircraft,an air conditioning unit connected to the central mixer in order to supply the central mixer with air at a desired low temperature,a first recirculation system which is designed to remove recirculation air from a first aircraft cabin region and which is connected to the central mixer in order to lead the recirculation air from the first aircraft cabin region into the central mixer, anda second recirculation system which is designed to remove recirculation air from a second aircraft cabin region and which is connected to the first local mixer and the second local mixer in order to lead the recirculation air from the second aircraft cabin region into the first local mixer and the second local mixer, the first and second local mixers each being connected to the central mixer in order to supply mixed air from the central mixer into the first and second local mixers, the second recirculation system further comprising;

    a central recirculation air removal duct connected to the second aircraft cabin region,a first recirculation air distribution duct which connects the central recirculation air removal duct to the first local mixer,a second recirculation air distribution duct which connects the central recirculation air removal duct to the second local mixer, andat least one cooling unit which is formed separate from the air conditioning unit and which is designed to cool the recirculation air removed from the second aircraft cabin region to a desired temperature, wherein the at least one cooling unit is arranged in at least one of;

    the first recirculation air distribution duct, in relation to the flow direction of the recirculation air removed from the second aircraft cabin region in the second recirculation system, upstream of the first local mixer, andthe second recirculation air distribution duct, in relation to the flow direction of the recirculation air removed from the second aircraft cabin region in the second recirculation system, upstream of the second local mixer.

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