IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0276626
(2008-11-24)
|
등록번호 |
US-8099973
(2012-01-24)
|
우선권정보 |
EP-07022904 (2007-11-26) |
발명자
/ 주소 |
- Sampson, Bernard Francis
- Harvey, Robert John
|
출원인 / 주소 |
- Honeywell Normalair-Garrett (Holdings) Limited
|
대리인 / 주소 |
MacMillan, Sobanski & Todd, LLC
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
5 |
초록
▼
An environmental control system for conditioning air in a vehicle compartment, such as an aircraft cabin. Cool expanded higher-pressure air from a turbine is mixed with recirculated warmer, lower pressure air from the compartment. The air is mixed and recirculated by a jet pump which includes an inl
An environmental control system for conditioning air in a vehicle compartment, such as an aircraft cabin. Cool expanded higher-pressure air from a turbine is mixed with recirculated warmer, lower pressure air from the compartment. The air is mixed and recirculated by a jet pump which includes an inlet section, an outlet section, a diffuser section and a mixing section. The mixing section includes a plurality of separate mixing chambers. The diffuser section includes diffusers for receiving mixed gases from each of the mixing chambers. The outlet section receives the mixed gases which are then conveyed to the compartment. The inlet section includes for each of the mixing chambers, a primary nozzle for introducing the higher-pressure air into a respective mixing chamber, and a secondary nozzle for introducing the lower pressure air to a respective mixing chamber.
대표청구항
▼
1. An environmental control system for conditioning a compartment of a vehicle containing warm air, the system including a turbine over which hot pressurized air is expanded and cooled to provide air which is cooler and at higher-pressure than warmer lower pressure air from the compartment, and a mi
1. An environmental control system for conditioning a compartment of a vehicle containing warm air, the system including a turbine over which hot pressurized air is expanded and cooled to provide air which is cooler and at higher-pressure than warmer lower pressure air from the compartment, and a mixing device to which the higher-pressure cooler air from the turbine and lower pressure warmer air from the compartment are mixed, wherein the mixing device comprises a jet pump which includes an inlet section, an outlet section, a diffuser section and a mixing section, said inlet section including a primary air inlet connected for receiving the higher-pressure cooler air from the turbine and a secondary air inlet adapted to be connected for receiving lower pressure warmer air from the compartment, said mixing section including a plurality of separated mixing chambers, and said diffuser section including diffusers which receive mixed air from each of said mixing chambers, and said outlet section receiving mixed air from said diffuser section and conveying the mixed air to a mixed air outlet which is adapted to be connected in use to the compartment, said inlet section including for each of the plurality of mixing chambers a primary nozzle for introducing primarily the higher-pressure air from said primary air inlet to a respective mixing chamber, and a secondary nozzle for introducing primarily the lower pressure air from said secondary air inlet to a respective mixing chamber. 2. A system according to claim 1, wherein said plurality of mixing chambers are arranged generally parallel to each other. 3. A system according to claim 1, wherein said mixing chambers are generally cylindrical, and wherein each mixing chamber having a mixing chamber length to mixing chamber diameter ratio in the order of about 8. 4. A system according to claim 1, wherein each primary nozzle has a larger cross section nozzle inlet to receive primarily higher-pressure air and a smaller cross section nozzle outlet to deliver the higher-pressure air to a mixing chamber. 5. A system according to claim 4, wherein said primary nozzles each extend along generally parallel axes in line with a higher-pressure air flow direction as the higher-pressure air enters said primary air inlet of said inlet section. 6. A system according to claim 4, wherein said inlet section includes a high pressure air inlet duct which communicates directly with all of said larger cross section primary nozzle inlets. 7. A system according to claim 1, wherein each of said secondary nozzles generally surrounds a respective primary nozzle. 8. A system according to claim 7, wherein said secondary nozzles each receive lower pressure air directly from a lower pressure air inlet duct of said inlet section. 9. A system according to claim 8, wherein said secondary nozzles each extend along generally parallel axes transverse to the air flow direction as the lower pressure air enters said secondary air inlet of said inlet section. 10. A system according to claim 1, wherein each of said diffusers of said diffuser sections has a cross section which increases towards said outlet section. 11. A system according to claim 10, wherein said mixing chambers are each of circular cross section, and said mixing chambers are closely nested so that there is an axially extending spacing between said nested mixing chambers. 12. A system according to claim 11 characterized in that diffuser exterior walls are in contact with the exterior walls of all of the other diffusers. 13. A system according to claim 11, wherein the cross section of said outlet section where it receives the mixed air substantially equals the combined cross sections of each of said diffusers at their largest cross section ends plus the cross section of said axially extending spacing. 14. An environmental control system for conditioning a compartment containing warm air, the system including a source of cooler air at higher-pressure than warmer lower pressure air from the compartment, and a mixing device to which the higher-pressure cooler air and lower pressure warmer air from the compartment are mixed, wherein the mixing device comprises a jet pump which includes an inlet section, an outlet section, a diffuser section and a mixing section, said inlet section including a primary air inlet connected for receiving the higher-pressure cooler air from the turbine and a secondary air inlet adapted to be connected for receiving lower pressure warmer air from the compartment, said mixing section including a plurality of separated mixing chambers, and said diffuser section including diffusers which receive mixed air from each of said mixing chambers, and said outlet section receiving mixed air from said diffuser section and conveying the mixed air to a mixed air outlet which is adapted to be connected in use to the compartment, said inlet section including for each of the plurality of mixing chambers a primary nozzle for introducing primarily the higher-pressure air from said primary air inlet to a respective mixing chamber, and a secondary nozzle for introducing primarily the lower pressure air from said secondary air inlet to a respective mixing chamber. 15. An aircraft including a compartment and an environmental control system for conditioning a compartment of the aircraft, the system including a turbine over which hot pressurized air is expanded and cooled to provide air which is cooler and at higher-pressure than warmer lower pressure air from the compartment, and a mixing device to which the higher-pressure cooler air from the turbine and lower pressure warmer air from the compartment are mixed, wherein the mixing device comprises a jet pump which includes an inlet section, an outlet section, a diffuser section and a mixing section, said inlet section including a primary air inlet connected for receiving the higher-pressure cooler air from the turbine and a secondary air inlet adapted to be connected for receiving lower pressure warmer air from the compartment, said mixing section including a plurality of separated mixing chambers, and said diffuser section including diffusers which receive mixed air from each of said mixing chambers, and said outlet section receiving mixed air from said diffuser section and conveying the mixed air to a mixed air outlet which is adapted to be connected in use to the compartment, said inlet section including for each of the plurality of mixing chambers a primary nozzle for introducing primarily the higher-pressure air from said primary air inlet to a respective mixing chamber, and a secondary nozzle for introducing primarily the lower pressure air from said secondary air inlet to a respective mixing chamber.
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