Device and method for distributing air in a cargo aircraft
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64D-013/00
B64D-013/06
출원번호
US-0294635
(2007-03-29)
등록번호
US-9242734
(2016-01-26)
우선권정보
DE-10 2006 014 572 (2006-03-29)
국제출원번호
PCT/EP2007/002847
(2007-03-29)
§371/§102 date
20100621
(20100621)
국제공개번호
WO2007/110248
(2007-10-04)
발명자
/ 주소
Gumm, Stefan
Horl, Manuela
Krakowski, Dariusz
Kalsow, Steffen
출원인 / 주소
Airbus Deutschland GmbH
대리인 / 주소
Wood, Herron & Evans, LLP
인용정보
피인용 횟수 :
0인용 특허 :
35
초록▼
A device for distributing air in a cargo aircraft includes using an air distribution system which is connected to a cargo deck. The air distribution system includes a source for bleed air, at least one air conditioning unit for treating the bleed air, a mixing unit which receives an air supply of re
A device for distributing air in a cargo aircraft includes using an air distribution system which is connected to a cargo deck. The air distribution system includes a source for bleed air, at least one air conditioning unit for treating the bleed air, a mixing unit which receives an air supply of recirculation air exiting the cargo deck and treated bleed air from the air conditioning unit, and at least one shut-off valve between the mixing unit and the cargo deck in order to interrupt or completely release the air supply to the cargo deck. A control unit establishes a desired air volume balance for the current operating state of the air distribution system and adjusts the flow volume through the at least one air conditioning unit such that the pressure prevailing in the mixing unit remains at a constant, predetermined value for all operating states.
대표청구항▼
1. An air distribution system of a cargo aircraft which includes at least one cargo deck which is connected to the air distribution system, the at least one cargo deck including a plurality of different cargo compartment areas, the system comprising: a source for bleed air,at least one air condition
1. An air distribution system of a cargo aircraft which includes at least one cargo deck which is connected to the air distribution system, the at least one cargo deck including a plurality of different cargo compartment areas, the system comprising: a source for bleed air,at least one air conditioning unit that treats the bleed air,a mixing unit which receives recirculation air exiting the at least one cargo deck and treated bleed air from the air conditioning unit and delivers an air supply of the recirculation air and the treated bleed air to the at least one cargo deck,a plurality of lines, each extending between the mixing unit and one of the different cargo compartment areas, such that the air supply from the mixing unit is routed out of the mixing unit through the plurality of lines to the different cargo compartment areas,at least one shut-off valve in the form of a motor-operated control valve located in each of the plurality of lines extending between the mixing unit and the at least one cargo deck in order to interrupt or completely release the air supply to each of the corresponding different cargo compartment areas of the at least one cargo deck,a cockpit switch located in a cockpit of the cargo aircraft and co-operating with the at least one shutoff valve to cause the at least one shutoff valve to take up an intermediate position between a position interrupting the air supply to the at least one cargo deck and a position completely releasing the air supply to the at least one cargo deck, anda control unit that determines a desired air volume balance for a plurality of operating states of the air distribution system and that adjusts flow volume through the at least one air conditioning unit in a current operating state of the air distribution system in accordance with the desired air volume balance determined for the respective current operating state such that air flow into and out of the mixing unit is equalized to cause a pressure prevailing in the mixing unit to remain at a constant, predetermined value for all of the plurality of operating states,wherein the mixing unit receives the recirculation air from a recirculation fan, and the control unit adjusts the throughput of the recirculation fan and the flow volume through the at least one shut-off valve in accordance with the desired air volume balance established for the respective current operating state. 2. The air distribution system according to claim 1, further comprising: a bypass line extending between the mixing unit and a bilge of the cargo aircraft, the bypass line being independent from the plurality of lines extending between the mixing unit and the at least one cargo deck, anda bypass valve located in the bypass line and which is actuated separately from the at least one shut-off valve to optionally discharge pressure from the mixing unit. 3. The air distribution system according to claim 2, wherein the control unit adjusts the flow volume through the at least one air conditioning unit to a minimum throughput before commanding the bypass valve to open. 4. The air distribution system according to claim 3, wherein the control unit adjusts the flow volume through the at least one air conditioning unit and also through the bypass valve in accordance with the desired air volume balance established for the respective current operating state such that the pressure prevailing in the mixing unit remains at the constant, predetermined value. 5. The air distribution system according to claim 1, wherein the cockpit and a courier area of the cargo aircraft are supplied with treated bleed air directly from one air conditioning unit. 6. The air distribution system according to claim 1, wherein the at least one shutoff valve includes two shutoff valves located between the mixing unit and the at least one cargo deck for each cargo deck. 7. The air distribution system according to claim 6, wherein each of the shutoff valves are position-monitored. 8. A method for distributing air in a cargo aircraft which includes at least one cargo deck connected to an air distribution system, the at least one cargo deck including a plurality of different cargo compartment areas, the method comprising: treating bleed air from a source of bleed air with an air conditioning unit on board the cargo aircraft, mixing the treated bleed air with recirculation air exiting the at least one cargo deck in a mixing unit to produce a fresh air supply to be delivered to the at least one cargo deck,delivering the fresh air supply via a plurality of lines, each extending between the mixing unit and one of the different cargo compartment areas, from the mixing unit to the different cargo compartment areas,selecting a reduced or non-reduced fresh air supply rate to be supplied to a selected one of the different cargo compartment areas chosen from the at least one cargo deck,activating at least one shutoff valve in the form of a motor-operated control valve, with the at least one shutoff valve located in each of the plurality of lines extending between the mixing unit and the selected cargo compartment area, thereby interrupting or releasing the fresh air supply to the selected cargo compartment area according to the selected fresh air supply rate, the at least one shutoff valve defining at least one intermediate position at which a cockpit switch may set the shutoff valve between positions interrupting and completely releasing the fresh air supply to the selected cargo compartment area,establishing a desired air volume balance for a plurality of operating states including a current operating state of the air distribution system,adjusting flow volume through the air conditioning unit in accordance with the desired air volume balance established for the current operating state such that air flow into and out of the mixing unit is equalized to cause a pressure prevailing in the mixing unit to remain at a constant, predetermined value for all of the plurality of operating states, andcontrolling a fan speed of a recirculation fan that causes the recirculation air to flow into the mixing unit, and controlling flow through the at least one shutoff valve, in accordance with the desired air volume balance established for the current operating state. 9. The method according to claim 8, further comprising: discharging pressure from the mixing unit with a bypass valve located in a bypass line in the event of an abnormal occurrence, the bypass line being independent from the plurality of lines extending between the mixing unit and the at least one cargo deck, and the bypass valve being actuated separately from the at least one shutoff valve, anddelivering a bypass flow from the mixing unit to a bilge of the cargo aircraft via the bypass line when the bypass valve discharges pressure from the mixing unit. 10. The method according to claim 9, further comprising: adjusting the flow volume through the air conditioning unit to be a minimum throughput before discharging pressure from the mixing unit. 11. The method according to claim 8, further comprising: controlling a supply of bleed air to the air conditioning unit in order to maintain the pressure in the mixing unit of the air distribution system.
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