JPH0351639B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a paint hanger used for painting aircraft.

(Prior art) Painting of aircraft is carried out inside a paint hanger by storing the aircraft inside the hanger.In order to maintain a good working environment, contaminated air mixed with paint particles and solvent vapor is constantly pumped out. Ventilation equipment will be required to exhaust the air and supply fresh air. There are two types of ventilation devices conventionally used for this purpose: a down blow type and a side flow type. The down blow method is
An air supply nozzle that blows air downward is provided over the entire ceiling surface of the hanger, and the air is exhausted from the lower sides or floor of the hanger. In addition, in the side flow system, air supply nozzles are arranged on the entire surface of an aircraft entrance/exit door, and the air flow from the nozzles is passed in a lateral direction.

(Problems to be Solved by the Invention) In the conventional ventilation system for aircraft paint hangers, the down-blow method requires an air supply device to be installed over the entire ceiling surface of the hanger. In addition to being expensive, the amount of air to be supplied must be increased, resulting in huge operating costs. In addition, the side flow method also requires a large amount of air supply, which increases operating costs.
In addition to this disadvantage, since the air supply nozzle is provided on the entrance/exit door, the door becomes large and has a complicated structure.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an aircraft paint hanger equipped with a ventilation system that requires a small amount of air supply and reduces both equipment and operating costs.

(Means for Solving the Problems) In order to solve the above problems, in the present invention, the paint hanger has a high ceiling part suitable for accommodating the vertical tail part of an aircraft, and a housing part for accommodating the fuselage part and the main wing part. An aircraft accommodating section is formed that includes a low ceiling section suitable for the above-mentioned construction, and a sloping ceiling section between the high ceiling section and the low ceiling section. As a ventilation system, an exhaust device is installed at the end of the low ceiling, an air supply device consisting of multiple air supply nozzles is installed on the ceiling of the high ceiling, and an air flow system consisting of high-speed air blowing nozzles is installed on the low ceiling. Each of the induction devices is provided so that the air flow blown downward from the air supply device is induced to a low ceiling part by a high-speed air flow from the induction device, and is caused to flow toward the exhaust device.

(Function) Air from the air supply device is blown downward at the high ceiling, reaching almost the floor of the high ceiling,
Forms a flow that covers high ceilings and sloping ceilings. Since a high-speed air blowing nozzle is provided in the low ceiling section and blows out high-speed air, the air within the high-speed ceiling section and the sloping ceiling section is attracted to the low ceiling section by this high-speed air flow and is guided to the exhaust device. It is preferable that the high-speed airflow from the inducing device be blown obliquely downward from the ceiling of the low ceiling portion toward the exhaust device. Further, it is preferable that the air supply nozzles in the high ceiling section be configured such that the closer they are to the slanted ceiling section, the greater the inclination towards the slanted ceiling section so that air is blown out diagonally downward.

(Effects) According to the present invention, since the hanger has an aircraft accommodation section formed by a high ceiling part, a low ceiling part, and a sloped ceiling part between them, the hanger has a uniform height in its entire volume. It becomes smaller than . Additionally, the ventilation system is configured to blow air downwardly from supply air nozzles in the ceiling of the high ceiling section and exhaust air from the ends of the low ceiling section, such that the air flows from one end of the aircraft compartment to the other. Therefore, it becomes possible to lower the amount of air supply. In addition, the low ceiling section is equipped with an induction device that directs the airflow toward the exhaust system, so it is possible to sufficiently ventilate every corner of the entire hanger by only supplying air from the ceiling of the high ceiling section. .

(Description of an embodiment) In the figure, a hanger 1 includes a high ceiling part 2 having a ceiling 2a at a high position, and a ceiling 3a at a nearby position.
An aircraft accommodating section 5 is formed of a low ceiling section 3 having a slanted ceiling 4a connecting the ceilings 2a and 3a. An entrance/exit door 6 is provided at the end of the high ceiling section 2. The ceiling 2a of the high ceiling section 2 is arranged at a height sufficient to accommodate the tail section of the aircraft, and the ceiling 3a of the low ceiling section 3 is arranged at a height sufficient to accommodate the fuselage and main wings. Ru. A screen 7 is arranged at the end of the low ceiling part 3, and an exhaust duct 8 is provided continuously to the screen 7. A heat exchanger 9 for waste heat recovery is provided within the exhaust duct 8, and an exhaust fan 10 is further provided to constitute an exhaust system.

The air supply system consists of an air supply duct 12 having an air supply fan 11, and this air supply duct 12 passes through a heat exchanger 9 and connects from the back side of the ceiling 3a of the low ceiling section 3 to the ceiling 2a of the high ceiling section 2. It reaches the air conditioner 13 through the back side. Due to the arrangement of the air supply duct 12, the air from the air supply fan 11 is sent to the air conditioner 13 after absorbing the heat of the exhaust gas in the heat exchanger 9. The air conditioned in the air conditioner 13 is transferred to the air supply duct 14
passed through. The air supply duct 14 is piped to the back side of the ceiling 2a of the high ceiling section 2. On the ceiling 2a,
A plurality of angle-adjustable air supply nozzles 15 are arranged, and the air supply nozzles 15 are connected to the air supply duct 14. Therefore, the conditioned air from the air supply duct 14 is ejected to the high ceiling part 2 via the air supply nozzle 15.

The low ceiling part 3 is provided with an airflow inducing device.
This air flow induction device is composed of a plurality of high-speed induction nozzles 16 arranged on the ceiling 3a, and the high-speed induction nozzles 16 are connected to an air supply duct 12 passing behind the ceiling 3a. Therefore, a portion of the air passing through the air supply duct 12 is ejected from the high-speed induction nozzle 16 at high speed. High speed induction nozzle 16
are arranged diagonally downward, inclining toward the front, that is, in the direction of the screen 7, and the high-speed air flow ejected diagonally downward, as shown by the dotted line in the figure, flows through the high ceiling section 2 and the inclined ceiling section 4. Air to low ceiling part 3
, and a horizontal laminar flow toward the screen 7 is formed within the low ceiling portion 3 . Since the high-speed airflow from the high-speed induction nozzle 16 has a downward velocity component, it can reach the floor surface of the low ceiling part 3, and an even horizontal laminar flow is formed in the low ceiling part 3. Ru.

In order to form an even laminar flow in the high ceiling part 2 and the sloping ceiling part 4, the blowing direction of the air supply nozzle 15 should be gradually adjusted from the rear, that is, from the entrance/exit door 6 side to the front. It is preferable to increase the amount. In order to allow the supply air to reach near the floor near the entrance/exit door 6, it is preferable that the rearmost air supply nozzle is tilted slightly rearward as shown in the illustrated example. In the illustrated example, the rearmost air supply nozzle 15 is inclined rearward by 3 degrees. The frontmost air supply nozzle 15 is connected to the ceiling 4 of the inclined ceiling part 4.
It is preferable to incline forward by an angle that is approximately the same as or slightly smaller than the inclination of a. In the illustrated example, the frontmost air supply nozzle 15 is inclined forward at 44°. It is preferable that the inclination angle of the intermediate air supply nozzle 15 is gradually changed between the inclination angle of the frontmost air supply nozzle 15 and the inclination angle of the rearmost air supply nozzle 15. By setting such an angle, it is possible to prevent a large vortex from occurring near the ceiling 4a of the inclined ceiling portion 4. In the illustrated example, another high-speed induction nozzle 17 is formed on the ceiling at the boundary between the low ceiling section 3 and the inclined ceiling section 4, and jets out a high-speed air flow horizontally forward.

By setting the ratio of the flow rate of air supply sent from the air supply nozzle 15 and the flow rate of high-speed air from the high-speed induction nozzle 16 to 95 to 98%, a sufficient number of ventilations can be achieved. . That is,
By blowing out the supply air almost downward from the ceiling 2a of the high ceiling part 2 and blowing out a small amount of airflow at high speed in the low ceiling part 3, the sloped ceiling part 4 and the low ceiling part 3 are connected from the high ceiling part 2. A steady flow can be formed that reaches the exhaust duct 8, and this steady flow can maintain a substantially laminar flow state. Therefore, ventilation of almost the entire aircraft housing section 5 can be achieved without any problem with a relatively small amount of air supply.

[Brief explanation of drawings]

The drawing is a sectional view of an aircraft painting hanger showing one embodiment of the present invention. 2...High ceiling part, 3...Low ceiling part, 4...Slanted ceiling part, 5...Aircraft housing part, 7...Screen, 8...Exhaust duct, 9...Heat exchanger, 10...
...Exhaust fan, 11...Air supply fan, 13...Air conditioner, 15...Air supply nozzle, 16...High speed induction nozzle.

Claims (1)

[Claims] 1. An aircraft consisting of a high ceiling section suitable for accommodating the vertical tail of the aircraft, a low ceiling section suitable for accommodating the fuselage and main wings, and a sloping ceiling section between the high ceiling section and the low ceiling section. An accommodation section is provided, an exhaust device is provided at the end of the low ceiling section of the aircraft accommodation section, an air supply device consisting of a plurality of air blowing nozzles is provided at the ceiling of the high ceiling section, and an air supply device consisting of a plurality of air blowing nozzles is provided at the ceiling of the high ceiling section. An air flow induction device consisting of a blow-off nozzle is provided, and the air flow blown downward from the air supply device is
An aircraft paint hanger, characterized in that the high-speed airflow from the attracting device is drawn to the low ceiling portion and guided to the exhaust device.