JP2579213B2 - Air supply device for aircraft - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air supply device for an aircraft for supplying conditioned air to a parked aircraft.

[Conventional technology]

Conventionally, ducts have been used to supply conditioned air from air conditioners installed in the central power room and the capital of each spot to the parked aircraft. Therefore, measures have been taken to install an underground duct near the parking position.
For example, as shown in FIG.
The conditioned air was guided to the pit 103 in the spot via 02, and the flexible duct 104 was guided to the ground from the pit 103 to supply the air to the aircraft 105 parked.

Japanese Patent Publication No. 46-11737 discloses a specific example of this air supply system.

[Problems to be solved by the invention]

The conventional underground duct facility method has a problem that construction costs for burying are increased and maintenance after installation is not easy. Also, since the length of the buried duct is constant, the flexible duct must be lengthened if the distance from the pit to the air supply port of the parked aircraft becomes longer due to differences in aircraft models and parking locations, so air conditioning air There has also been a problem that heat retention and air permeability deteriorate when passing through a long flexible duct.

In addition, with the recent increase in the size of airports and aircraft and the increase in the number of takeoffs and landings, the rationalization of various operations on parked aircraft has been promoted, and air supply to aircraft can be performed in cooperation with other operations. Complete the air supply connection work in a short period of time, for example, while parked at the boarding bridge connection position for passenger movement, as well as being more required and not hindering other work. Came to be required. It is not advisable to install an underground duct for an aircraft parked at this boarding bridge location, because the parking location cannot fully accommodate the model change. In addition, drawing out the flexible duct from the air conditioner hinders other operations, is not suitable for supplying a large amount of air, and is difficult to mechanize.

An object of the present invention is to solve the above-described conventional problems and to further streamline the work of supplying conditioned air to a parked aircraft.

[Means to solve the problem]

The gist of the present invention to achieve the above object is to provide an air conditioner having a fixed installation position, one end connected to the air supply port of the air conditioner, and the other end connected to the air supply port of the aircraft. An air supply duct connected to the aircraft, and an air supply device for an aircraft parked in the air, wherein at least an outdoor portion of the total length of the air supply duct that reaches the aircraft parked, is installed in the air in a horizontal direction above the ground surface. A rigid duct section, which is formed by two or more duct pipes having different diameters.
These ducts have a structure in which the overlapping portions are connected in the axial direction with the overlapping portions. Sealing means is interposed at the overlapping portions of the duct pipes, and the overlapping portions are slidable via sliding members. A large-diameter duct and a small-diameter duct filled with a heat insulating material are attached to the outside of the large-diameter duct and the small-diameter duct so that the outer surface of the duct pipe is not exposed even when the duct pipe extends to the maximum. The sliding member may comprise a roller provided to protrude from the pipe end or a roller with a spring attached to a duct pipe near the pipe end.

In other words, the present invention replaces the conventional use of flexible ducts on the ground, and replaces the substantial length with a rigid duct, which is connected to a plurality of duct pipes via a sliding member (roller) so as to be able to expand and contract. It is designed to be able to be suspended in the air without the need for supporting columns in the middle, and it is particularly suitable for aircraft that can supply large air volumes and is suitable for being suspended in the air along a stretchable boarding bridge. An airtight air supply device is provided.

〔Example〕

Hereinafter, the present invention will be described based on the illustrated embodiment.

FIG. 1 is an overall view showing a state in which air is supplied to an aircraft 2 connected to a boarding bridge 1 by the apparatus of the present invention. As shown in the drawing, the apparatus of the present invention comprises an air conditioner 4 fixed to the airport building 3 side and an air supply duct connected from the air conditioner 4 to an air supply port 5 of the aircraft 2. Is a rigid duct portion A suspended in the air along the boarding bridge 1, a flexible duct portion B connected to both ends of the rigid duct portion A, and a flexible duct portion B on the air conditioner side and a flexible duct portion connected to the air supply port side in the machine. And a duct portion C.

The rigid duct portion A is suspended from the ground GL in the horizontal direction at a height high enough to allow various work vehicles to travel freely under the erection, and the length of the rigid duct portion A is equal to the total air supply. Most of the journey. As can be seen from the example shown in the figure, the rigid duct portion A is suspended in the air with two supports at both ends without providing a fulcrum in the middle. The fulcrum on the side of the air conditioner 4 is a column 6 whose position is fixed, and the fulcrum on the side of the air supply port 5 is a movable column 7. The movable support 7 is used commonly as a support support for the boarding bridge 1. The support of the rigid duct portion A with respect to the fixed column 6 on the side of the air conditioner 4 is performed via a universal support device 8 which rotates up, down, left and right as shown in FIG. In accordance with the movement of the column 7, a slight inclination (swinging) can be performed while maintaining its rigidity (while maintaining a straight line) in the up-down direction, the front-rear direction, and the left-right direction. A flexible duct portion B is provided to absorb the deformation of the duct on the air conditioner 4 side when the rigid duct portion A swings up, down, left and right. On the other hand, the movable column 7 is mounted on a traveling vehicle 9 so as to be movable in accordance with the parking position of the aircraft 2.
Incidentally, the movable column 7 can be used separately for the rigid duct portion A, and can be installed separately from the moving column of the boarding bridge 1.

The rigid duct portion A thus installed in the air is
It must be able to expand and contract in response to changes in the parking position and maintain sufficient strength without an intermediate support to ensure the freedom of travel of the work vehicle, etc., under its span. It must be done safely and reliably.
For this purpose, in the present invention, the rigid duct portion A is configured so that a plurality of duct pipes having different diameters are slidably joined in the axial direction at the overlapped portion (in FIG. 1, three ducts having different diameters). An example in which the duct pipes 10a, 10b, and 10c are joined in the axial direction is shown), and a special sealing structure and a sliding structure as described below are employed in the overlapping portion.

3 and 4 are enlarged cross-sectional views of the junction of the duct pipes in FIG. 1. FIG. 3 shows a state at the time of maximum extension, and FIG. 4 shows a state at the time of contraction. These figures show the joint of the duct pipes 10a and 10b in FIG. 1 as an example, but the same applies to other duct pipe joints. Therefore, in the following, the small-diameter duct pipe 10a is referred to as a small-diameter duct S, and the large-diameter duct pipe 10b is referred to as a large-diameter duct L. As shown, the open end 12 of the small-diameter duct S is coaxially inserted into the open end 11 of the large-diameter duct L, and the distance between the two open ends 11 and 12 in this inserted state constitutes an overlapping portion. I do. The stopper members 13 and 14 are provided so that the overlapping distance can be secured by a predetermined distance even when the duct is fully extended.
It is fixed to the inner surface of the large-diameter duct L and the outer surface of the small-diameter duct S in the overlapping portion. These stopper members 13 and 14
At the center of the duct (the body opposite to the open ends 11 and 12) from the position of the duct, the heat insulation outer cylinder 15 is installed coaxially with the duct while maintaining a predetermined gap with the duct. The gap between the heat insulating outer cylinder 15 and the duct is filled with a heat insulating material 15 'to prevent heat radiation from the duct surface.

One characteristic structure of the rigid duct portion according to the present invention is that the overlapping portion is slidable and the distance of the overlapping portion at the time of maximum extension is extended by a sliding member. The point is that the strength of the joint is ensured. That is, an arm having one end fixed to the open end 12 of the small-diameter duct S and protruding outward from the open end 12.
A roller 17 is attached to the end of the large-diameter duct L so that it can slide on the inner peripheral surface thereof. Further, one end is fixed to the open end 11 of the large-diameter duct L and is located outside the open end 11. Roller 19 is attached to the tip of arm 18 that projects
So that it can slide on the outer peripheral surface of. With roller 17
A plurality (e.g., three to six) 19 are arranged side by side at positions substantially equal in distance from the respective opening ends. This allows the load to be supported by the roller 17 at the overlap of the two ducts.
3 and 19, and the distance between the rollers 17 and 19 is longer than the open ends 11 and 12 by the parts of the arms 16 and 18, as shown in FIG. Even at the maximum extension when the stoppers 13 and 14 are engaged, the bending resistance at the joint is enhanced. Also,
Due to the elastic force of the arms 16 and 18 protruding out of the open ends 11 and 12, the rollers 17 and 19 are adjusted so that they are always firmly pressed against the duct. I can make up for it. In addition, the folding operation of the rigid duct portion A (operation for storing most of the length of the small-diameter duct S in the large-diameter duct L) and the extending operation in accordance with the parking time of the aircraft and the rollers 17 and 19 are performed. Can smoothly be performed with extremely small power.

Another characteristic structure of the rigid duct portion according to the present invention is a seal structure of a duct overlapping portion in which a seal works at the time of air supply and is released and slidable at the time of expansion and contraction operation.

FIG. 5 is an enlarged view of the seal portion used in the example of FIGS. The seal of the present embodiment comprises a band-shaped ring 20 made of a soft material and having a predetermined width and a spring member 21.
One edge 20a of the band-shaped ring is fixed to the peripheral surface of one duct pipe (the outer peripheral surface of the small-diameter duct S in the illustrated example) of the overlapping portion, and the other edge 20b is the peripheral surface of the other duct pipe ( In the illustrated example, the spring member 21 is disposed on the inner peripheral surface of the large-diameter duct L).
Is in a play state biased by. A slip ring 22 is attached to the surface of the other edge portion 20b constituting the play portion so as to improve the slip with the inner surface of the duct. The spring member 21 is urged in a direction for applying pressure to the free contact portion.
One end of 21 is fixed to the outer surface of the small-diameter duct S. The spring member 21 does not necessarily have to be a ring shape that goes around the entire peripheral surface of the duct. In the illustrated example, the spring member 21 is composed of a plurality of springs that are attached to the belt-shaped ring 20 at certain intervals. In the illustrated example, one edge 20a of the belt-shaped ring 20 is fixed to the small-diameter duct S, and the other edge 20b is fixed.
In this example, the free duct is in contact with the large-diameter duct L.
Conversely, it is possible to play with the former and fix it to the latter. In any case, the edge on the free contact side is arranged closer to the open end 12 of the small diameter duct S than on the fixed side. Thus, when the internal pressure of the duct increases, the free contact side of the belt-shaped ring 20 receives the pressure and is pressed against the inner surface of the duct, so that airtightness at the free contact portion is ensured. The air supply operation to the aircraft is to supply conditioned air to the air conditioning duct inside the aircraft,
Generally, air-conditioning ducts in aircraft are installed in a limited space, so the cross-section of the duct is smaller than the amount of air supply, so the ventilation resistance increases. Therefore, it is necessary to increase the internal pressure in the air supply duct. As the internal pressure increases, the airtightness of the free contact portion is maintained, so that the amount of leakage at the overlapping portion can be minimized. On the other hand, since the expansion and contraction operation of the duct is performed when the air supply is stopped, the back pressure at the free contact portion is eliminated, and the belt-like ring 20 slides on the duct surface without resistance via the slip ring 22. In this example, the belt-like ring 20
Is formed of an elastic material, the above-mentioned action can be achieved without using the spring member 21.

FIG. 6 shows another example of the seal structure according to the present invention in the same relationship as FIG. In this example, a ring-shaped hollow tube made of an elastic material is used as the seal material.
24, which is housed in a pedestal 25 fixed to the overlapping portion (fixed to the outer peripheral surface of the small-diameter duct S in the illustrated example). Compressed air is piped into this hollow tube 24
It is introduced as appropriate through. That is, when air is supplied to the aircraft, compressed air is pressed into the hollow tube 24 from the hose 26 to expand the tube 24, thereby closing the gap between the overlapping portions. On the other hand, at the time of expansion and contraction operation, the tube 24 is contracted by reducing the pressure inside the hose 26 to normal pressure or reduced pressure, thereby eliminating the resistance of the expansion and contraction operation. In the illustrated example, the hose 26 is arranged inside the duct. However, the hose 26 can be arranged outside the duct. In any case, it is preferable that the hose 26 performs a winding and rewinding operation in accordance with the expansion and contraction operation of the duct. Note that a liquid may be introduced into the hollow tube 24 instead of the compressed air. Although not shown, a roller and a seal are formed at the open end opposite to the open end 11 of the duct pipe 10b with the same structure as the open end 12 of the duct pipe 10a, and the open end of the duct pipe 10c is formed. Is inserted coaxially.

FIG. 7 shows another embodiment in which the overlapping portion of the rigid duct is slidable. In the case of this embodiment, the open ends 11 and 12 of the large-diameter duct L (10b) and the small-diameter duct S (10a) are relatively longer than the end of the heat-insulating outer cylinder 15 as compared with the example of FIG. distance l ₁ and l ₂ is protruded by extending the tip portion of the exposed tube portions 28 and 29 without this heat insulating outer cylinder, the rollers 17 and 19 is attached, which is urged by a spring. The roller 17 attached to the small-diameter duct S is slid on the inner surface of the large-diameter duct L, and the roller 19 attached to the large-diameter duct L is attached to the outer surface of the small-diameter duct S (the outer surface of the heat-insulating outer cylinder). It is made to slide.

FIG. 8 is an enlarged view showing the details of the roller 17 attached to the small-diameter duct S (the roller 19 on the large-diameter duct L also has the same structure, although the direction is reversed). A hole 30 is opened near the open end 12 of the duct 10a as shown in FIG. The roller holding device 31 includes a cylindrical cylinder 33 mounted in the hole 30 and a rod 34 contained therein.
It consists of a spring 35 and a spacer 36. rod
At one end of 34, a spindle portion 37 that is in sliding contact with the inner surface of the cylinder 33 is attached, and the roller 17 is attached to the spindle portion 37. The other end of the rod 34 penetrates an opening 39 provided in the abutting surface 38 of the cylinder 33. The opening 39 has a square shape, and the cross section of the rod 34 passing through the opening 39 is also square. This prevents the rod 34 from rotating around the axis. Then, a roller is provided by a coil spring 35 interposed between the abutting surface 38 of the cylinder and the spindle portion 37 in the cylinder 33.
17 is elastically pressed in the direction of its sliding surface. In addition, a spacer 36 having a predetermined length and having a tube having both ends open is coaxially loosely fitted to the outside of the rod 34. This spacer 36
The length of the spring is designed not to be compressed more than necessary, so that the roller 17 is pressed more than necessary to the roller holding device 31 side and the outer cylinder of the small diameter duct S is kept warm.
15 is prevented from contacting the inner diameter side of the large-diameter duct L. Roller 17 with spring configured as above
(Three in the example of FIG. 7) are installed at equal intervals on the same circumference of the duct pipe 10a, and on the other hand,
The direction is reversed, but by installing a plurality of rollers 19 in the same manner, the duct tubes 10a and 10b are always slidably held concentrically with these rollers as supporting points. Although the sealing means is not shown in FIG. 7, for example, those described above with reference to FIGS. 5 and 6 are used, and a stopper member is appropriately provided. However, in the example of FIG. 7, the holding device itself of the roller 19 provided to protrude from the small-diameter duct S (10a) can also serve as one stopper.

(Effects)

As described above, the air supply device for an aircraft according to the present invention uses a conventional underground duct as an aerial rigid duct, thus reducing installation costs and using a heat insulating outer tube filled with a heat insulating material. Because it is provided outside the, the heat retention was improved, the ventilation resistance was reduced, and the handling was significantly improved. Since the rigid duct portion is installed in the air, a work vehicle and workers can freely enter and exit under the rigid duct portion, so that other operations are not hindered even during the air supply operation to the aircraft. The rigid duct is constructed by joining multiple duct pipes and adopts a special seal structure and support structure at the overlapping part, so that even if it is installed in the air with a long span, it can sufficiently withstand its own weight and wind force without intermediate supports It has high strength and complete hermeticity, and can be easily expanded and contracted without any resistance.

In particular, in the device of the present invention, the rigid duct can be extended and retracted in accordance with the extension and contraction movement of the boarding bridge (length of about 40 to 50 m when extended, about 20 m when shortened). Since the flexible duct can be connected to the air supply port at the same time as the connection of the inking bridge, the use thereof is further facilitated. Moreover, at this time, the rigid bridge can be installed along the boarding bridge of the conventional design without entrusting the load of the rigid duct to the boarding bridge. Side by side is possible. In addition, the sealing means and the sliding member of the duct pipe according to the present invention can sufficiently cope with the expansion and contraction operation of the boarding bridge even when the boarding bridge is installed side by side or integrated by applying rigidity and act load to the boarding bridge. be able to. For this reason, the apparatus of the present invention can greatly contribute to rationalization of large airport facilities.

[Brief description of the drawings]

FIG. 1 is an overall view showing a use state of an example of an apparatus according to the present invention,
FIG. 2 is an enlarged view of the universal support device, FIG. 3 and FIG.
FIG. 5 is a cross-sectional view showing the superposed portion of the rigid duct according to the present invention at the time of maximum extension and at the time of slightly shortening, and FIG.
FIG. 6 is an enlarged sectional view of the seal structure shown in FIG. 6, and FIG. 6 is an enlarged sectional view similar to FIG. 5, showing another seal structure according to the present invention.
The figure is a sectional view showing another embodiment in which the overlapping portion of the rigid duct is slidable, FIG. 8 is an enlarged sectional view of the roller supporting device portion of FIG. 7, and FIG. 9 is a conventional air supply to an aircraft. FIG. 3 is a layout diagram illustrating an example of a device. 1… Boarding bridge, 2… Aircraft, 4… Air conditioner, 5… In-flight air vent, 6… Fixed prop, 7… Movable prop, 8…
… Universal support device, 13,14 …… Stopper member, 15
…… Insulated outer cylinder, 16,18 …… Roller support arm, 17,19 ……
Roller, 20 ... Band-shaped ring, 21 ... Spring member, 22
… Slip ring, 24… Hollow tube, 26… Compressed air supply hose, 31… Roller support device, 35… Spring, 36… Spacer. A: Rigid duct part, B, C ... Flexible duct part, L ... Large diameter duct, S ... Small diameter duct.

Claims (3)

(57) [Claims] An air conditioner having a fixed installation position and an air supply duct having one end connected to an air supply port of the air conditioner and the other end connected to an air supply port in the aircraft. An air supply device for an in-flight aircraft, comprising: a rigid duct portion that is installed in the air horizontally above the ground surface at least in an outdoor portion of the entire length of the air supply duct and that extends to a parked aircraft; Has a structure in which two or more duct pipes having different diameters are connected in the axial direction with an overlapped portion at their joint, and a sealing means is interposed at the overlapped portion of the duct pipes, The overlapping portion is slidable via a sliding member, and is provided outside the large-diameter duct and the small-diameter duct so that the outer surface of the duct tube is not exposed even when the duct tube extends to its maximum. Heat insulation outer tube filled with heat insulation material The air supply device for a parked aircraft, wherein the sliding member comprises a roller provided protruding from a pipe end or a roller with a spring mounted on a duct pipe near the pipe end. . 2. The sealing means comprises a band-like ring having a predetermined width, and one edge of the band-like ring is fixed to the peripheral surface of one of the duct pipes of the overlapping portion. 2. The air supply device according to claim 1, wherein the other edge is loosely connected to the peripheral surface of the other duct pipe via a biasing means or by the elasticity of the band-shaped ring itself. 3. The overlapping portion of the duct is provided with a sufficient overlapping amount so that one duct tube can support the other duct tube by itself, and the overlapping amount is secured by a stopper member by extending the duct tube. The air supply device according to claim 1, wherein the air supply is performed by restricting.