CN102501975A - Air distribution system for providing high air quality for civil aircraft cabins - Google Patents
Air distribution system for providing high air quality for civil aircraft cabins Download PDFInfo
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- CN102501975A CN102501975A CN201110374218XA CN201110374218A CN102501975A CN 102501975 A CN102501975 A CN 102501975A CN 201110374218X A CN201110374218X A CN 201110374218XA CN 201110374218 A CN201110374218 A CN 201110374218A CN 102501975 A CN102501975 A CN 102501975A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/50—On board measures aiming to increase energy efficiency
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Abstract
An air distribution system suitable for providing high air quality for aircraft cabins is characterized by comprising a fresh air supply pipe (603) used for feeding fresh air into an air supply outlet (606) at the back of a seat and a fresh air header pipe (602) connected with the fresh air supply pipe (603). The invention has the benefits that a favorable airflow organization can be formed in an aircraft cabin to further facilitate discharging pollutants without influencing adjacent passengers and improve the healthiness of the cabin; owing to the distribution mode of fresh air and recycling air, a more comfortable thermal environment can be formed, and the air quality is superior; and the utilization ratio of fresh air is higher, the fresh air volume of the air supply outlet at the back of the seat is reduced appropriately without influencing the air quality, so as to achieve the purpose of lowering the energy consumption of the cabin air distribution system.
Description
Technical field
The present invention relates to a kind of later-model main cabin air distribution system, be applicable to civil aircraft main cabin air distribution, better air quality is provided.
Background technology
Air distribution system is meant distributing to driving compartment, main cabin and equipment compartment to scale through the air of regulating to guarantee the suitable gas transmission system of all even wind speed of temperature in the cabin.In the intensive large aircraft cabin environment of personnel, the effect of air distribution system is to form good air current composition, and thing and guarantee the main cabin traveling comfort effectively decontaminates.But the expenditure of energy of this system is directly related with passengers quantity and resh air requirement, and receives the strict demand of airworthiness standard.Can disappear if hope to reduce large-scale civil aircraft environmental control system rear end air distribution system, a main approach is to improve the new wind degree of utilization of main cabin air distribution system, promptly utilizes the least possible resh air requirement to satisfy in the airworthiness standard about CO
2Concentration requirement Deng minimum gas.
The air feed quality of civil aircraft main cabin air distribution system receives multiple effects limit; Like position and form, cabin interior spatial geometric shape, personnel and the seat position etc. of air feed parameter (temperature, humidity, flow), air feed distribution openings and return air inlet, and relation is complicated between the various factors.
Representative type tradition civil aircraft main cabin air distribution system send downside to return mode on being; Promptly tiltedly blow by Sorte Nula top, main cabin, by return air under the two bottom sides of main cabin, a kind of representative type tradition civil aircraft main cabin air distribution system as shown in Figure 1; 101 is air outlet, and 102 is return air inlet.
Fig. 4 has provided the air distribution system scheme of a kind of downside of proposing in the present prior art and middle part air-supply last time; Location of air supply inlet 401 is arranged on grid place, central gangway, cabin; Location of air supply inlet 402 is arranged on last row's seat rear and the same eminence of people's face, and return air inlet 403 is located at the top ceiling middle part.Adopt this method can let new wind be full of passenger cabin from bottom to up, what the people sucked all is fresh air, and the pollutants of breathing out can be got rid of along with the air-flow that makes progress, and weakens interfering with each other between the passenger thereby reach.After new wind blew out from auxiliary air outlet, straight line was to intelligent face, and the approach distance is very short, has well played and has reduced the effect of polluting.
Summary of the invention
According to an aspect of the present invention, a kind of high air quality air distribution system that is applicable to the main cabin of aircraft is provided, has it is characterized in that comprising:
New wind air supply pipe is used for new wind delivered to and is arranged on air outlet after the seat back;
The new wind house steward who links to each other with new wind air supply pipe.
Description of drawings
Fig. 1 is a typical civil aircraft main cabin air distribution system scheme drawing.
Fig. 2 (a) and 2 (b) have shown that seat and personnel underfooting portion return air flow trace flow field show experimental result.
Fig. 3 (a) and 3 (b) have shown that personnel's mutual Interference Flow of thing of breathing out shows experimental result.
Fig. 4 has shown the air distribution system scheme of a kind of downside of proposing in the prior art and middle part air-supply last time.
Fig. 5 (a) and 5 (b) have shown in a kind of existing program the people thing head vortex delay figure that breathes out.
Fig. 6 has shown civil aircraft according to an embodiment of the invention main cabin air distribution system.
New wind flow track during Fig. 7 (a) and 7 (b) have shown according to one embodiment of present invention and the people flow track of breathing out.
Individuality exhalation flow track during Fig. 8 (a) has shown according to one embodiment of present invention to 8 (d).
The specific embodiment
The objective of the invention is to set up a kind of new main cabin air distribution system, improve the air quality and the health in main cabin, reduce system energy consumption.Adopt this scheme to help forming good air current composition, avoid above head of passenger, forming to pollute being detained whirlpool, be more conducive to pollutants and discharge and do not disturb adjacent passenger, raising main cabin air quality and health; Bottom, cabin air outlet only infeeds recirculated air simultaneously, has reduced the cold wind sense of low-temperature airflow to passenger foot, satisfies the traveling comfort requirement.The present invention can reduce resh air requirement and come conserve energy, reaches the purpose that reduces main cabin air distribution system energy consumption.
The inventor has mentioned the air distribution system that send down return air and downside and middle part air-supply to go up return air on the conventional airplane main cabin to prior art and has carried out emulation and flow field experimental study, and specifically experiment and result comprise:
(1) seat and personnel underfooting portion return air flow trace flow field carry out the flow visualization experimental study to technique of display in the air supply mode to sending on the existing aircraft passenger compartment next time first to utilize existing smog to flow, and Fig. 2 has provided this flow visualization experimental result.Experimental result shows; There is new wind " short circuit " phenomenon in this air distribution system; Shown in Fig. 2 (a); The new wind that to be top sent into by air supply opening is directly had underbalance effect from the seat bottom through the passageway return air inlet aspirates away, thus cause the new wind of part fail with the cabin in air inerchange and directly pressed adjusting system to discharge out of my cabin, cause energy dissipation.For the purpose of clear, Fig. 2 (b) has provided the flow trace scheme drawing.
(2) utilize the smog technique of display that flows, to sending next time in the air supply mode personnel's thing of breathing out to carry out experimental investigation on the existing aircraft passenger compartment, shown in Fig. 3 (a), for the purpose of clear, Fig. 3 (b) has provided the flow trace scheme drawing first.Show that by the flow of breathing out of the personnel shown in Fig. 3 (a) and Fig. 3 (b) experimental result can know; In this air distribution system between adjacent passenger personnel oral cavity exhalation thing have mutual interference phenomenon; Especially inboard passenger's exhalation thing can be flowed through under the air current composition effect and led outside passenger's face mutually, forms aerial contamination and also is beneficial to the virus diffusion.
(3) there is weak point in existing downside shown in Figure 4 and the middle part air-supply air distribution system scheme that goes up return air: air-flow is after remarkable face; Not at once do not siphoned away, be detained vortex, cause people's thing of breathing out in time to drain but form one at head part's upper area by the return air inlet at top; The control Pollutants Diffusion had negative effect; Like Fig. 5 (a), for the purpose of clear, Fig. 5 (b) has provided the flow trace scheme drawing.In addition, if air outlet 401 supplies new wind simultaneously with air outlet 402, can cause that people foot receives low-temperature airflow and stimulates and the generation sense of discomfort.
The invention provides a kind of high air quality air distribution system that is applicable to the civil aircraft main cabin.As shown in Figure 6.The high air quality air distribution system in civil aircraft main cabin that is applicable to according to an embodiment of the invention comprises (only illustrating to have demonstrated symmetrical half the structure among Fig. 6):
The refrigeration bag (601) of aircraft environmental control system is used for fresh air is carried out conditioning, and operated by rotary motion is in the middle part of aircraft passenger compartment bottom.According to a specific embodiment of the present invention, new wind air supply header road (602) and reduced air steam line (604) are set at base plate Lower Deck Cargo CompAtment top, main cabin, and return air duct (610 and 611) is set at Sorte Nula top, top, main cabin.
In according to one embodiment of present invention; The return air air gets into cargo hold by return air duct (610 and 611) under return air fan (not indicating among the figure) effect; Recirculated air gets into reduced air steam line (604) through filter (not indicating among the figure) under recirculation blower (not indicating among the figure) effect, fresh air gets into new wind air supply header road (602) under the effect of refrigeration bag pressure.
In according to one embodiment of present invention, refrigeration bag (601) is connecting new wind house steward (602), by new wind air supply pipe (603) new wind is delivered to and is arranged on air outlet (606) after each seat back.
In according to one embodiment of present invention; Recirculated air is delivered to the reduced air air supply opening (605) of main cabin two bottom sides by reduced air steam line (604); Get into the main cabin by the below, be used to form total air current flow, and reduce the cold wind sense of low-temperature airflow passenger foot.
In according to one embodiment of present invention, the main cabin fresh air becomes return air after the heat extraction dehumidifying, carries dusty gas and is discharged by the return air inlet (607 and 609) and top, the main cabin return air inlet (608) of baggage container bottom, gets into return air duct (610 and 611) respectively.
Be arranged on the air outlet (606) at seat rear, it links to each other with new wind air supply pipe (603), is used to provide dew bright air, in system, can save the hybrid chamber part like this; The return air inlet (608) that is arranged on the return air inlet (607 and 609) of baggage container bottom and is arranged on the top ceiling middle part is more conducive to pollutants and discharges and do not disturb adjacent passenger in order to form good air current composition, raising main cabin health; The air outlet (605) that is arranged on the main cabin two bottom sides is used to provide recirculated air, is more conducive to main cabin flowing power formation and guarantees that foot's temperature is suitable.
With send downside to return the formula air distribution system on traditional civil aircraft main cabin to compare, the present invention has reduced that the exhalation thing disturbs between the passenger, has suppressed dispersion of pollutants and diffusion, the air current composition health is good; New in addition wind degree of utilization is higher relatively, new wind can not take place be not utilized the situation of just directly discharging out of my cabin.
Go up the air distribution system scheme of return air compares with downside and middle part air-supply; The present invention can not form pollutants at head part's upper area and be detained vortex; And air outlet is blown into circulated air bottom the main cabin, has alleviated people foot and has received the low-temperature airflow stimulation and the sense of discomfort of generation.
Proved system performance preceence of the present invention through following experiment:
1) adopt the flow visualization technology to the evaluation that experimentizes of improved novel civil aircraft main cabin air distribution system, the result shows:
(1) the air current flow track of improvement project is discharged more swimmingly, does not form obvious whirlpool in face the place ahead and is detained, and helps the control of pollutants, and shown in Fig. 7 (a), for the purpose of clear, Fig. 7 (b) has provided the flow trace scheme drawing.
(2) the exhalation thing interference phenomenon between the passenger is eliminated basically, thereby has improved the health of air current composition, and shown in Fig. 8 (a) and Fig. 8 (c), for the purpose of clear, Fig. 8 (b) and Fig. 8 (d) have provided the flow trace scheme drawing.
2) adopt existing PIV velocity measuring technique, near the flowing velocity the human body face in the improvement project is analyzed, when the area of each passenger the place ahead air outlet 2 is 0.024m
2, when exit velocity is 0.6m/s, near the wind speed people's face is about 0.2～0.4m/s, satisfies the traveling comfort requirement, wind sense traveling comfort is better.
3) in order to test the air quality of this improvement project, carried out the people's performance that has of portion's subdivision section and tested, shown in figure 10.Use French Odum MX2100 type compound gas detector.The oxygen mean concentration of test is 20.8%, and gas concentration lwevel is about 0.01%, and comparatively stable, and it is very little to fluctuate.The traveling comfort and the hygienic requirements that propose before satisfying, and gas concentration lwevel is more much lower than what require far away, and the preceence of this kind air supply mode has been described, can reduce resh air requirement and come conserve energy.
Beneficial effect of the present invention comprises:
Can form good air current composition at aircraft passenger compartment, be more conducive to pollutants and discharge and do not disturb adjacent passenger, raising main cabin health;
New wind and reduced air forms of distribution can form comparatively comfortable thermal environment, and air quality is more excellent;
New wind degree of utilization is higher, can suitably reduce the resh air requirement of seat rear air supply opening, and can air quality not influenced to some extent, reaches the purpose that reduces main cabin air distribution system energy consumption.
Claims (7)
1. high air quality air distribution system that is applicable to aircraft passenger compartment is characterized in that comprising:
New wind air supply pipe (603) is used for new wind delivered to and is arranged on air outlet (606) after the seat back;
The new wind house steward (602) who links to each other with new wind air supply pipe (603).
2. the high air quality air distribution system that is applicable to the civil aircraft main cabin according to claim 1 is characterized in that further comprising:
The refrigeration bag (601) of aircraft environmental control system is used for fresh air is carried out conditioning,
Wherein said refrigeration bag (601) links to each other with said new wind house steward (602).
3. the high air quality air distribution system that is applicable to the civil aircraft main cabin according to claim 2 is characterized in that:
Said refrigeration bag (601) is arranged on the middle part of the bottom in said civil aircraft main cabin.
4. the high air quality air distribution system that is applicable to the civil aircraft main cabin according to claim 2 is characterized in that further comprising:
First and second return air ducts (610), its first return air inlet (607 and 609) with the baggage container bottom links to each other;
Second return air duct (611), it links to each other with second return air inlet (608) at top, main cabin,
Thereby the gas that carries pollutants is discharged by said first and second return air inlets (607,609,608), get into return air duct (610 and 611) respectively.
5. the high air quality air distribution system that is applicable to the civil aircraft main cabin according to claim 4 is characterized in that further comprising:
First and second return air ducts (610 and 611),
Return air fan, the gas that carries pollutants is got into the cargo hold of said aircraft respectively by said first and second return air ducts (610 and 611) under the effect of said return air fan by said first and second return air inlets (607,609,608).
6. the high air quality air distribution system that is applicable to the civil aircraft main cabin according to claim 5 is characterized in that further comprising:
Reduced air steam line (604),
Recirculation blower,
Be arranged on the reduced air air supply pipe (605) of the two bottom sides in said main cabin,
Recirculated air gets into said reduced air steam line (604) through a filter under the effect of recirculation blower; Deliver to said reduced air air supply pipe (605) by reduced air steam line (604); Below by the main cabin gets into the main cabin; Be used to form total air current flow, and reduce the cold wind sense of low-temperature airflow passenger foot.
7. the high air quality air distribution system that is applicable to the civil aircraft main cabin according to claim 6 is characterized in that:
New wind air supply header road (602) and reduced air steam line (604) are set at the cargo hold top under the base plate of said main cabin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374218XA CN102501975A (en) | 2011-11-22 | 2011-11-22 | Air distribution system for providing high air quality for civil aircraft cabins |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110374218XA CN102501975A (en) | 2011-11-22 | 2011-11-22 | Air distribution system for providing high air quality for civil aircraft cabins |
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| CN102501975A true CN102501975A (en) | 2012-06-20 |
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| CN201110374218XA Pending CN102501975A (en) | 2011-11-22 | 2011-11-22 | Air distribution system for providing high air quality for civil aircraft cabins |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359291A (en) * | 2013-07-12 | 2013-10-23 | 天津大学 | Lower-supplying upper-returning efficient airflow organization suitable for civil single-passage passenger plane cabin |
| CN103365216A (en) * | 2013-07-12 | 2013-10-23 | 天津大学 | Semi-transparent simulation experiment platform of large passenger plane cabin environment |
| CN104002976A (en) * | 2014-05-12 | 2014-08-27 | 中国商用飞机有限责任公司 | Air supply system of aircraft cabin |
| CN105292493A (en) * | 2015-10-30 | 2016-02-03 | 天津大学 | Air conditioning system with downward-feeding and upward-returning airflow channel suitable for passenger plane cabin |
| CN105877264A (en) * | 2016-05-27 | 2016-08-24 | 南京嘉涛科技有限公司 | Double-tube personalized air supply seat |
| CN115042976A (en) * | 2022-03-16 | 2022-09-13 | 南京航空航天大学 | Human body microenvironment control air conditioning system of civil passenger plane |
| EP4182227A4 (en) * | 2020-07-15 | 2024-07-31 | Thales Avionics Inc | Virus filtered/sterilized airflows directed to passengers in vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4742760A (en) * | 1987-07-06 | 1988-05-10 | The Boeing Company | Aircraft cabin ventilation system |
| US5695396A (en) * | 1995-03-17 | 1997-12-09 | Daimler-Benz Aerospace Airbus Gmbh | Ventilating system for reducing contaminations in the air of an aircraft |
| US20080053126A1 (en) * | 2006-09-01 | 2008-03-06 | Airbus Deutschland Gmbh | Aircraft Air-Conditioning System For The Individual Air Conditioning Of Regions Of An Aircraft Cabin With A Liquid Coolant |
| CN101590912A (en) * | 2009-07-02 | 2009-12-02 | 北京航空航天大学 | A kind of passenger plane main cabin supplies, exhaust system |
| CN101827751A (en) * | 2007-10-18 | 2010-09-08 | 空中客车作业有限公司 | System and method for air conditioning at least one partial region of an airplane |
-
2011
- 2011-11-22 CN CN201110374218XA patent/CN102501975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4742760A (en) * | 1987-07-06 | 1988-05-10 | The Boeing Company | Aircraft cabin ventilation system |
| US5695396A (en) * | 1995-03-17 | 1997-12-09 | Daimler-Benz Aerospace Airbus Gmbh | Ventilating system for reducing contaminations in the air of an aircraft |
| US20080053126A1 (en) * | 2006-09-01 | 2008-03-06 | Airbus Deutschland Gmbh | Aircraft Air-Conditioning System For The Individual Air Conditioning Of Regions Of An Aircraft Cabin With A Liquid Coolant |
| CN101827751A (en) * | 2007-10-18 | 2010-09-08 | 空中客车作业有限公司 | System and method for air conditioning at least one partial region of an airplane |
| CN101590912A (en) * | 2009-07-02 | 2009-12-02 | 北京航空航天大学 | A kind of passenger plane main cabin supplies, exhaust system |
Non-Patent Citations (1)
| Title |
|---|
| 袁领双等: "大型客机座舱舒适性发展分析", 《航空制造技术》, no. 13, 31 July 2011 (2011-07-31), pages 64 - 67 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359291A (en) * | 2013-07-12 | 2013-10-23 | 天津大学 | Lower-supplying upper-returning efficient airflow organization suitable for civil single-passage passenger plane cabin |
| CN103365216A (en) * | 2013-07-12 | 2013-10-23 | 天津大学 | Semi-transparent simulation experiment platform of large passenger plane cabin environment |
| CN103365216B (en) * | 2013-07-12 | 2015-11-25 | 天津大学 | A kind of translucent airliner cabin ambient Simulation Experimental Platform |
| CN104002976A (en) * | 2014-05-12 | 2014-08-27 | 中国商用飞机有限责任公司 | Air supply system of aircraft cabin |
| CN104002976B (en) * | 2014-05-12 | 2016-07-06 | 中国商用飞机有限责任公司 | Air supply system of aircraft cabin |
| CN105292493A (en) * | 2015-10-30 | 2016-02-03 | 天津大学 | Air conditioning system with downward-feeding and upward-returning airflow channel suitable for passenger plane cabin |
| CN105292493B (en) * | 2015-10-30 | 2018-04-03 | 天津大学 | Air conditioning system with downward-feeding and upward-returning airflow channel suitable for passenger plane cabin |
| CN105877264A (en) * | 2016-05-27 | 2016-08-24 | 南京嘉涛科技有限公司 | Double-tube personalized air supply seat |
| EP4182227A4 (en) * | 2020-07-15 | 2024-07-31 | Thales Avionics Inc | Virus filtered/sterilized airflows directed to passengers in vehicle |
| CN115042976A (en) * | 2022-03-16 | 2022-09-13 | 南京航空航天大学 | Human body microenvironment control air conditioning system of civil passenger plane |
| CN115042976B (en) * | 2022-03-16 | 2024-03-29 | 南京航空航天大学 | Human body microenvironment control air conditioning system of civil passenger plane |
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Application publication date: 20120620 |