Aircraft air-conditioning system with a reduced risk of icing
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64D-013/00
B64D-013/08
출원번호
US-0646224
(2009-12-23)
등록번호
US-8708786
(2014-04-29)
우선권정보
DE-10 2009 003 937 (2009-01-05)
발명자
/ 주소
Schmid, Martin
Krakowski, Dariusz
Markwart, Michael
Baumann, Joerg
출원인 / 주소
Airbus Operations GmbH
대리인 / 주소
Wood, Herron & Evans, LLP
인용정보
피인용 횟수 :
1인용 특허 :
3
초록▼
An aircraft air-conditioning system includes an air-conditioning unit that is connected by a main fresh-air line to a mixer in order to supply the mixer with fresh air at a desired low temperature. A fresh-air branch line that is connected upstream of the mixer to the main fresh-air line has a flow
An aircraft air-conditioning system includes an air-conditioning unit that is connected by a main fresh-air line to a mixer in order to supply the mixer with fresh air at a desired low temperature. A fresh-air branch line that is connected upstream of the mixer to the main fresh-air line has a flow cross section that is smaller than a flow cross section of the main fresh-air line. In a region of connection of the main fresh-air line to the fresh-air branch line the main fresh-air line and the fresh-air branch line are so formed that a main fresh air flow flowing through the main fresh-air line is deflected, while a fresh air branch flow flowing through the fresh-air branch line experiences substantially no deflection.
대표청구항▼
1. An aircraft air-conditioning system, comprising: an air-conditioning unit that is connected by a main fresh-air line to a mixer in order to supply the mixer with fresh air at a desired low temperature, the mixer supplying a mixture of the fresh air flowing through the main fresh-air line and reci
1. An aircraft air-conditioning system, comprising: an air-conditioning unit that is connected by a main fresh-air line to a mixer in order to supply the mixer with fresh air at a desired low temperature, the mixer supplying a mixture of the fresh air flowing through the main fresh-air line and recirculation air extracted from a passenger cabin to a first zone of the aircraft, anda fresh-air branch line that is connected upstream of the mixer to the main fresh-air line, wherein the fresh-air branch line has a flow cross section that is smaller than a flow cross section of the main fresh-air line,wherein the main fresh-air line and the fresh-air branch line proximate the connection of the main fresh-air line to the fresh-air branch line are so formed that a main fresh air flow flowing through the main fresh-air line to the mixer is deflected, while a fresh air branch flow flowing through the main fresh-air line and the fresh-air branch line experiences substantially no deflection. 2. The aircraft air-conditioning system according to claim 1, wherein the main fresh-air line proximate the connection of the main fresh-air line to the fresh-air branch line branches into a first main fresh-air line branch and a second main fresh-air line branch, wherein the first main fresh-air line branch and the second main fresh-air line branch each have a flow cross section that is larger than the flow cross section of the fresh-air branch line. 3. The aircraft air-conditioning system according to claim 1, wherein the fresh-air branch line is uninsulated in the region of connection of the main fresh-air line to the fresh-air branch line. 4. The aircraft air-conditioning system according to claim 1, wherein the fresh air branch flow that flows through the fresh-air branch line is supplied to a second zone of the aircraft different than the first zone without being mixed with the recirculation air and without deflection while flowing from the main fresh-air line into the fresh-air branch line. 5. The aircraft air-conditioning system according to claim 1, further comprising: a control unit, which controls the operation of the air-conditioning unit and/or a supply of warm air into the main fresh-air line downstream of the air-conditioning unit and upstream of the region of connection of the main fresh-air line to the fresh-air branch line in such a way that the temperature of an air flowing through the region of connection of the main fresh-air line to the fresh-air branch line does not fall below a first predetermined temperature value. 6. The aircraft air-conditioning system according to claim 5, wherein the first predetermined temperature value is in a range between 0° C. and 5° C. 7. The aircraft air-conditioning system according to claim 1, further comprising: a control unit, which is adapted to control the operation of the air-conditioning unit and/or a supply of warm air into the main fresh-air line downstream of the air-conditioning unit and upstream of the region of connection of the main fresh-air line to the fresh-air branch line in such a way that the temperature of an air flowing through the region of connection of the main fresh-air line to the fresh-air branch line does not exceed a second predetermined temperature value. 8. The aircraft air-conditioning system according to claim 7, wherein the second predetermined temperature value is in a range between −15° C. and −10° C. 9. The aircraft air-conditioning system according to claim 1, further comprising: a heating device, which selectively heats at least one of the main fresh-air line and the fresh-air branch line in the region of connection of the main fresh-air line to the fresh-air branch line. 10. The aircraft air-conditioning system according to claim 9, further comprising: a control unit, which controls the heating device in dependence on at least one measured parameter that indicates icing of the region of connection of the main fresh-air line to the fresh-air branch line, wherein the measured parameter is characteristic of at least one of a static pressure in the main fresh-air line, a static pressure in the fresh-air branch line, and a temperature in a region of the aircraft that is connected to the main fresh-air line or the fresh-air branch line downstream of the region of connection of the main fresh-air line to the fresh-air branch line. 11. The aircraft air-conditioning system according to claim 9, wherein the heating device selectively heats the region of connection of the main fresh-air line to the fresh-air branch line in a purposeful and locally selective manner. 12. The aircraft air-conditioning system according to claim 9, wherein the heating device comprises a line, through which a heat transfer fluid flows, and that the fresh-air branch line in the region of connection of the main fresh-air line to the fresh-air branch line extends through the line, through which the heat transfer fluid flows. 13. The aircraft air-conditioning system according to claim 12, wherein the line, through which the heat transfer fluid flows, is a recirculated-air line for recirculating filtered air from a passenger cabin of the aircraft. 14. An aircraft air-conditioning system, comprising: an air-conditioning unit that is connected by a main fresh-air line to a mixer in order to supply the mixer with fresh air at a desired low temperature, anda fresh-air branch line that is connected upstream of the mixer to the main fresh-air line, wherein the fresh-air branch line has a flow cross section that is smaller than a flow cross section of the main fresh-air line, anda heating device, which is adapted to heat at least one of the main fresh-air line and the fresh-air branch line in a region of connection of the main fresh-air line to the fresh-air branch line, wherein the heating device comprises a line, through which a heat transfer fluid flows, and that the fresh-air branch line in the region of connection of the main fresh-air line to the fresh-air branch line extends through the line, through which the heat transfer fluid flows,wherein the main fresh-air line and the fresh-air branch line in the region of connection of the main fresh-air line to the fresh-air branch line are so formed that a main fresh air flow flowing through the main fresh-air line is deflected, while a fresh air branch flow flowing through the fresh-air branch line experiences substantially no deflection, andwherein the line, through which the heat transfer fluid flows, opens out into the main fresh-air line in the region of connection of the main fresh-air line to the fresh-air branch line. 15. An aircraft air-conditioning system, comprising: an air-conditioning unit that is connected by a main fresh-air line to a mixer in order to supply the mixer with fresh air at a desired low temperature, the mixer supplying a mixture of the fresh air flowing through the main fresh-air line and recirculation air extracted from a passenger cabin to a first zone of the aircraft, the main fresh-air line including a bent portion in the form of a T-shaped junction or L-shaped junction, anda fresh-air branch line that is connected upstream of the mixer to the main fresh-air line, wherein the fresh-air branch line has a flow cross section that is smaller than a flow cross section of the main fresh-air line, and wherein the fresh-air branch line extends across the bent portion and the fresh-air branch line defines an inlet located upstream from the bent portion such that the fresh-air branch line communicates with the main fresh-air line upstream from the bent portion, thereby causing a main fresh air flow flowing through the main fresh-air line to be deflected when flowing through the bent portion, while a fresh air branch flow flowing through the fresh-air branch line experiences substantially no deflection.
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이 특허에 인용된 특허 (3)
Atkinson Michael J. (East Sussex GB3) Birch Peter H. (East Sussex GB3), Air cycle air conditioner for heating and cooling.
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