CN111361744A - A kind of ventilation system for projecting wind along the aisle of aircraft cockpit - Google Patents

Abstract

The invention discloses a ventilation system for projecting and supplying air along an aircraft cabin aisle, comprising an air supply port and an air exhaust port. The air outlet is arranged on the roof of the cockpit aisle and the lower part of the seat on both sides of the aisle, and the top air outlet is an orifice or louver tuyere connected at the end of the top air duct arranged longitudinally along the fuselage; the air outlet at the lower part of the seat is in the shape of a long strip It is connected with the air supply branch pipe under the seat, and is arranged on the seat structure next to the aisle along the direction of the fuselage, and the air supply opening is embedded with louvers; the air exhaust opening is arranged on the ceiling near the bulkheads on both sides and the cabin symmetry axis on the top panel (applicable to dual-aisle cockpit); the ventilation system includes three independent air supply modes that can be used in combination, including high-speed downward air supply from the top panel, low-speed ceiling air supply, and air supply under the seat, which can be used in combination with the aircraft. , in different stages of disembarkation and flight, to provide a comfortable thermal environment for passengers and flight attendants, reduce the discomfort caused by the existing replacement ventilation design on the feet of passengers, and improve the cabin air quality.

Description

A kind of ventilation system for projecting wind along the aisle of aircraft cockpit

technical field

The invention belongs to the technical field of ventilation of passenger aircraft, and relates to a ventilation system for projecting air along a cockpit aisle of an aircraft.

Background technique

With the process of globalization, airplanes are gradually becoming the mainstream means of transportation. Aircraft rely on airflow patterns created by the Cabin Environmental Control System (ECS) to provide a comfortable and healthy cabin environment. Reasonable airflow organization can enable the pollutants in the cabin to be discharged out of the cabin in the shortest path and the fastest time, reduce the cross-mixing of the air in the cabin, and ensure that the passengers inhale relatively clean air.

According to the mixing situation of supply air and cabin air, the current air flow organization modes designed for the cabin can be divided into two categories: one is the mixed ventilation based on the dilution principle, which mixes the supply air with the air in the cabin evenly, The pollutant concentration is diluted below the specified limit; the other type is the displacement ventilation in which the air supply port is set at the floor attachment and the exhaust port is placed in the upper part of the passenger cabin. Delivers fresh air more efficiently to the human breathing zone, minimizing cross-mixing of cabin air. The air outlet for the current designed cabin displacement ventilation is located at the bottom of the two side walls of the cabin. When cooling the cabin, the cold air sent from the bulkhead directly blows on the passenger's ankle, causing a strong blowing discomfort to the passenger. In addition, the passengers next to the bulkhead are also affected by the cold radiation from the bulkhead, which together with the cold air at the ankles, further aggravates the discomfort. Therefore, it is very necessary to improve the displacement air supply system in the cockpit of large passenger aircraft.

SUMMARY OF THE INVENTION

In order to solve the problems in the prior art, the present invention provides a ventilation system for projecting wind along an aircraft cabin aisle. The ventilation system can not only provide a comfortable thermal environment for passengers and flight attendants at different stages of boarding, disembarking, flight, and in-flight service, but also solves the problem of inconsistency in the ventilation of passengers' feet caused by the replacement ventilation design in the prior art. Comfort and improve cabin air quality.

The technical scheme of the present invention is:

A ventilation system for supplying air along an aircraft cockpit aisle, comprising an air supply port and an air exhaust port, the air supply ports are arranged on the roof panel of the cockpit aisle and the lower parts of the seats on both sides of the aisle, and the top panel air supply port is a roof arranged along the longitudinal direction of the fuselage. The end of the air supply pipe is connected to the orifice plate or the louver air outlet, which can form two independent air supply forms of high speed and low speed; the air supply port under the seat is in the shape of a long strip, which is connected with the air supply branch pipe under the seat, and is arranged in the direction of the fuselage. On the seat structure next to the aisle, the air outlet is embedded with louvers, and the air is blown to the aisle floor; the single-channel cabin air outlet is arranged on both sides of the cabin roof close to the bulkhead, and the double-channel cabin air outlet is arranged on the roof. Near the sides of the bulkhead and the center of the cabin. The cabin air supply includes three independent modes and various combinations between them. The three independent air supply modes are: high-speed downward air flow from the roof, low-speed downward air flow from the roof, and under-seat air flow.

The top air supply pipe is arranged in the center of the roof above the cockpit aisle, and is arranged longitudinally along the fuselage, and is connected to the end orifice tuyere or louver tuyere through three rows of side-by-side branch pipes to adjust the wind speed of the end jet; The small one is the high-speed air supply port, and the two sides of the middle air supply port are the low-speed air supply ports with larger cross-section, and are symmetrically distributed along the two sides of the high-speed air supply port; Wind; the low-speed air outlet is used to deliver cold air.

The top air supply pipe and the branch pipe for supplying air to the lower part of the seat are both connected with the air supply riser pipe, and the connecting pipe sections are respectively provided with separate valves, so as to realize the high-speed downward air supply from the roof, the low-speed downward air supply from the roof and the downward air supply from the seat. The switching of three independent air supply modes and their combined use. The cockpit bottom air supply pipe is arranged at the lower part of the cockpit floor along the direction of the fuselage, and is connected with the air supply riser pipe.

Relying on the opening and closing of the valve in front of the end air outlet to realize the switching of the air supply mode, closing the air supply under the seat and the air supply of the narrow air outlet in the middle of the roof, and opening the air supply of the wide air outlet on both sides to realize the low-speed air supply of the roof, which can reduce the air supply. The jet wind speed of the small cold air reduces the blowing feeling of the human body; while the air supply under the seat and the air supply from the wide air vents on both sides of the top panel are closed, only the air supply from the narrow air vents in the middle is used to realize the high-speed air supply of the top panel, so that the treated air is High speed into the cockpit.

Depending on the air supply ratio of the top air duct and the air duct under the seat, it can be combined into various ventilation modes for use in different stages of flight. For example, before boarding, the high-speed air supply from the roof is mainly used to quickly adjust the cabin temperature to a comfortable range; while during the boarding and disembarkation stages and the flight attendant service stage, the low-speed air supply from the roof is used to meet the temperature of the people in the aisle. Conditioning and air quality requirements; while in other stages of flight, under-seat air supply is mainly used to facilitate the formation of a displacement ventilation mode, so that the treated air is more effectively delivered to the breathing area of the passengers.

The air ducts under the seat on both sides of the aisle in the cabin have different designs for different cabins:

For the economy class of a single-aisle passenger aircraft, the treated air passes through the air ducts arranged vertically along the bulkhead to the lower part of the seat, and bends to the horizontal direction at the lower surface of the seat, and finally connects to the end louvers at the bottom of the seat; for In the economy class of a dual-aisle passenger aircraft, the air ducts at the bulkheads on both sides are the same as those in the single-aisle cabin, while in the middle seat, a branch pipe for supplying air to the middle seat is arranged in the middle of the horizontal pipes connecting the bottom air pipes on both sides. , the branch pipe is installed with a valve. After the valve, the branch pipe is divided into two parts, and then connected to two vertical air supply pipes that penetrate the floor symmetrically installed along the inner side of the seat legs, and are bent in the horizontal direction at the lower surface of the seat. The aisles on both sides of the seat are finally connected to the end louvers at the bottom of the seat; for first class and business class, the treated air is introduced from the lower air duct of the cockpit along the seat legs or partitions, and the air-conditioning wind is similarly delivered to the aisle.

The cabin air outlets are all arranged on the cabin roof, the single-channel cabin air outlets are arranged on both sides of the cabin roof near the bulkhead and are connected to the return air duct, and the dual-channel cabin air outlets are also arranged on both sides of the roof near the bulkhead and The middle gap of the central luggage rack in the cabin is connected with the return air duct.

When the air supply mode is mainly based on the air supply under the seat, the air-conditioning air that is slightly lower than the cabin temperature is sent into the cabin through the louver vents under the seat. Under the action of buoyancy and the suction of the exhaust port, it rises and is discharged from the top exhaust port to replace the polluted air.

Compared with the prior art, the novel ventilation system for projecting wind along the aisle of the aircraft provided by the present invention has the following advantages:

The ventilation system is designed with a variety of air supply modes, which can provide fresh air and improve thermal comfort for different stages of the flight and different people in the cabin. For example, before passengers board the plane, high-speed air supply from the ceiling can be used to quickly heat up or cool down the cabin; while in the boarding and disembarking stages when the aisles are full of people, as well as during the flight attendant service stage, the low-speed ceiling air supply can be used to cool the cabin. The air supply is concentrated in the aisle area; at other times, the air supply under the seat is mainly used to send air slightly lower than the cabin temperature into the cockpit to form a displacement ventilation mode and reduce the cross-mixing of the air in the cabin. And the cool air sent under the seat is delivered to the aisle, so that the passengers' ankles are not directly exposed to the low-temperature air. In addition, since the middle area of the passenger cabin is less affected by the cold radiation of the bulkhead, it is also beneficial to send cool wind to the aisle to cool down the central area of the passenger cabin.

A separate valve is designed before each air supply end, which is convenient for switching between various air supply modes and adjusting the air supply volume in proportion. The branch pipes for the air supply under the seat are arranged close to the bulkheads on both sides, the seat structure or the partition board, and the overall space for the passenger's legs is not occupied.

Description of drawings

Fig. 1 is the schematic diagram of the airflow pattern of the single-aisle aircraft cabin of the present invention;

Fig. 2 is the schematic diagram of the airflow pattern of the dual-aisle aircraft cockpit of the present invention;

Figure 3-1 is a schematic front view of the single-aisle aircraft cabin air duct of the present invention;

Figure 3-2 is a three-dimensional schematic diagram of the single-aisle aircraft cabin air duct shown in Figure 3-1;

Fig. 4-1 is the front schematic view of the air duct of the double-aisle aircraft cabin of the present invention;

Figure 4-2 is a three-dimensional schematic diagram of the air duct of the dual-aisle aircraft cabin shown in Figure 4-1;

Figure 5-1 is a schematic sectional view of the cabin top air supply pipe of the present invention;

Figure 5-2 is a three-dimensional schematic diagram of the top air duct shown in Figure 5-1;

Figure 6-1 is a three-dimensional schematic diagram of the air supply branch pipe under the seat close to the bulkhead in the present invention;

6-2 is a three-dimensional schematic diagram of the air supply branch pipe under the seat in the middle of the double-aisle cabin in the present invention;

Figures 7-1 and 7-2 are three-dimensional schematic diagrams of the three-row cabins of the single-aisle and double-aisle passenger aircraft of the present invention;

In the figure: 1-1 branch pipe of the first top air supply pipe; 1-2 branch pipe of the second top air supply pipe; 1-3 branch pipe of the third top air supply pipe; 2 branch pipe of air supply under the seat; 3 exhaust air port; 4 air supply risers; 5 bilge air supply pipes; 6 exhaust pipes; 7-1 first regulating valve, 7-2 second regulating valve, 7-3 third regulating valve; 8 horizontal branch pipes.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1 and 2, the present invention is a ventilation system for delivering air along the aisle of the aircraft. The air supply pipe in the cabin is arranged in two parts, wherein a part of the air supply pipe is arranged on the roof of the passenger aircraft cabin aisle. , is the top air supply pipe, its structure is shown in Figure 5-1 and Figure 5-2, and the rest are arranged at the lower part of the seat on both sides of the aisle, which is the air supply branch pipe under the seat, as shown in Figure 6-1 and 6- 2; the top air supply pipe of the cockpit is arranged in the center of the roof above the passenger cabin aisle, and is arranged longitudinally along the fuselage, and is connected to the air supply branch pipes 1-1, 1-2 and 1-3 respectively; the air supply branch pipes Road 1-2 is narrower and is a high-speed jet passage for air flow, while the air supply branch pipes 1-1 and 1-3 symmetrically distributed on both sides are low-speed jet passages with a wider area; the end of the air supply branch pipe is embedded with an orifice plate Air outlet or louver air outlet; the air outlet 3 of the single-channel passenger cabin is arranged on both sides of the cabin roof close to the bulkhead and is connected with the exhaust duct, and the double-channel passenger cabin air outlet is simultaneously arranged on both sides of the bulkhead and the roof of the cabin symmetry axis. Connected to the exhaust duct.

As shown in Figure 3-1 and Figure 3-2, it is a schematic diagram of the air duct layout of a single-aisle aircraft cockpit. The environmental control system sends 50% of the fresh air and 50% of the filtered circulating gas to the bottom air supply duct 5 Then, the air-conditioning air is sent to the top air supply pipe and the air supply branch pipe 2 under the seat through the air supply riser 4 and valves 7-1, 7-2, 7-3 according to the required air volume ratio, and finally reaches the various air supply pipes in the cockpit. Outlet.

As shown in Figures 4-1 and 4-2, it is a schematic diagram of the air duct layout of the double-aisle aircraft cockpit. Unlike the air duct layout of the single-aisle aircraft cockpit, the top air ducts are symmetrically distributed along the central axis of the fuselage on the two sides of the cockpit. The center of the roof above the side aisle is then connected to the air supply riser 4 of the cabin through a connecting pipe section. The connecting pipe section is equipped with a first regulating valve 7-1 and a second regulating valve 7-2. In addition, as shown in Figure 6-2 As shown in the figure, the lower part of the middle seat of the passenger cabin also needs to introduce air-conditioning air, so it is necessary to install the horizontal branch pipe 8 connecting the air supply pipes 5 of the bilge on both sides, and install the upward air supply branch pipe vertically in the middle position of the horizontal branch pipe 8. The branch pipe A third regulating valve 7-3 is installed on the road. After the valve, the branch pipe is divided into two parts, which are respectively connected to the vertical air pipes on the inner side of the seat legs that penetrate the floor, so as to supply air to the air supply branch pipe under the seat.

As shown in Figures 6-1 and 6-2, in the present invention, the air supply duct and the end air outlet under the seat are arranged close to the side wall of the passenger cabin, the partition board or the seat legs, and do not occupy the leg space of passengers. For the seat close to the bulkhead, as shown in Figures 3-1 and 6-1, the air supply pipe under the seat is led out from the inlet end of the air supply riser 4 and penetrates the cabin floor and is vertically arranged along the bulkhead. And the lower surface of the seat is bent to the horizontal direction, and the louvers are installed at the end; for the middle seat of the dual-aisle cockpit, as shown in Figure 4-1 and 6-2, two penetrating the floor and back along the inner side of the seat legs Symmetrically installed vertical air ducts are bent horizontally to the aisles on both sides of the seat at the lower surface of the seat, and louvers are also installed at the ends; After it is drawn out, it is sent to the end louvers on the left and right sides of the lower seat.

The ventilation system has three independent air supply modes that can be used in combination with the top plate high-speed downward air supply, the top plate low-speed downward air supply, and the under-seat air supply, which not only takes into account the needs of passengers and crew, but also can be used for different flights. As shown in Figure 1 and Figure 2, before passengers board the plane, the top delivery branch pipes 1-2 are used to provide high-speed air supply to the roof to meet the rapid heating or cooling needs of the cabin; During the disembarkation stage and the flight attendant service stage, the air supply branch pipes 1-1 and 1-3 are used to supply air at a low speed on the roof to meet the temperature regulation and air quality requirements of the people in the aisle; while in other flight stages, the main use of seats The lower air supply branch pipe 2 supplies air to form a displacement air supply mode, which reduces the cross-mixing of the air in the cabin, so that the treated air is more effectively delivered to the passenger's breathing area.

Fig. 7-1 and Fig. 7-2 are three-dimensional schematic diagrams of the present invention applied to single-aisle and two-aisle passenger aircraft. Taking a three-row cockpit as an example, the present invention is based on the existing passenger aircraft cabin environment control system. It can be realized by simple modification of the cabin air supply duct and exhaust duct.

Although the present invention has been described above with reference to the drawings, the present invention is not limited to the specific embodiments described above. Changes or equivalent substitutions made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention.

Claims (6)

1. a ventilation system for supplying air along the aircraft cabin aisle, it is characterized in that, comprise air supply port and air outlet, and described air supply port is arranged on the seat lower part of the cockpit aisle roof and both sides of the aisle, and the roof air supply port is along the cockpit aisle. The end of the top air supply pipe arranged in the longitudinal direction of the fuselage is connected to the orifice plate or the louver air outlet; the air supply port under the seat is elongated, connected with the air supply branch pipe under the seat, and arranged in the direction of the fuselage on the seat structure next to the aisle The air outlet is embedded with louvers; the single-channel cabin air outlet is arranged on both sides of the cabin roof near the bulkhead, and the double-channel passenger cabin air outlet is arranged on both sides of the roof near the bulkhead and in the center of the cabin. 2. The ventilation system for projecting air along an aircraft cabin aisle according to claim 1, wherein the cabin air supply comprises three independent modes and various combinations between them, and the three independent air supply modes They are: high-speed downward air supply from the top plate, low-speed downward air supply from the top plate, and air supply under the seat. 3. The ventilation system of claim 1, wherein the top air duct is arranged at the central position of the top plate above the cockpit aisle, and is arranged longitudinally along the fuselage, passing through three columns. The side-by-side branch pipes are connected to the end orifice tuyere or louver tuyere; the middle air supply port is a high-speed air supply port with a smaller cross-section, and the two sides of the middle air supply port are low-speed air supply ports with a larger cross-section, and are symmetrically distributed along both sides of the high-speed air supply port. 4. The ventilation system of claim 1, wherein the top air supply pipe and the air supply branch pipe for the lower part of the seat are both connected with the air supply riser, and the connecting pipe sections are respectively arranged There is a valve; the air supply riser is connected with the cockpit bottom air supply pipe, and the cockpit bottom air supply pipe is arranged at the lower part of the cockpit floor in the direction of the fuselage adjacent to the bulkheads on both sides. 5. The ventilation system for projecting air along the aircraft cabin aisle according to claim 1, is characterized in that, the air supply pipes under the seat on both sides of the aisle in the cabin have different designs for different cabins: For the economy class of a single-aisle passenger aircraft, the air passages on both sides of the aisle are arranged such that the treated air passes through the vertically arranged air ducts to the lower part of the seat, and the vertical air ducts are adjacent to the bulkhead and bend to the horizontal at the lower surface of the seat. direction, and finally connect to the end louvers at the bottom of the seat; For economy class of twin-aisle passenger aircraft, the arrangement of air ducts at the bulkheads on both sides is the same as that of single-aisle cabins; however, the branch pipes for supplying air to the middle seats are arranged in the middle of the horizontal pipes connecting the bottom air pipes on both sides, and the branch pipes are installed The valve, after the valve, the branch pipe is divided into two parts, and then connected to two vertical air supply pipes that penetrate the floor symmetrically installed along the inner side of the seat legs, and are bent horizontally to both sides of the seat at the lower surface of the seat the aisle, and finally connect to the end louver vent at the bottom of the seat; For First Class and Business Class, the treated air is introduced from the lower cabin air duct along the seat legs or partitions, similarly delivering air conditioning air to the aisle. 6. The ventilation system of claim 1, wherein the air vents are arranged on the cockpit roof, and the single-channel passenger cabin air vents are arranged on two sides of the cabin roof close to the bulkhead. The side is connected with the exhaust duct, and the dual-channel cockpit air outlet is simultaneously arranged on both sides of the top plate close to the bulkhead and the middle gap of the central luggage rack in the cabin, and is connected with the exhaust duct.

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