JPH10314359A - Composite exhaust device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it economical by using a blower combinedly used for a wind tunnel device and a building exhauster by providing a vertical wind tunnel for free-falling simulation, which discharges air outside, a building exhaust duct connected to a blower inlet, an outlet exhaust passage connected to the outlet, and damper, which opens and closes an air inlet. SOLUTION: In the case of exhausting only from building, a damper 22 of an air inlet 21, and an outside air damper 25 is closed, an axial blower 11 discharges exhaust from the building from an exhaust vent 27. When floating is carried out in a floating chamber 7, the damper 22 and the outside air damper 25 are opened, and output of the axial blower 11 is increased. At this time, flow velocity of the blower 11 should be sufficient to float a person to be floated in the floating chamber 7. The opening of the damper 22 at full-opening is set so that the flow rate of an exhaust passage 26 is equal to independent discharging for reducing influence by opening the damper 22 on the building exhaust system. When suspension is carried out, the actual falling state is simulated by fluctuating diagonal wind and flow velocity by operating a mixed flow/fluctuated wind generating airfoil 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined type in which a free-fall simulated vertical wind tunnel in which a descender is blown up and floated in the air at a wind speed simulating a descending speed for training in parachute descent and an exhaust system of a building are combined. It relates to an exhaust device.

[0002]

2. Description of the Related Art In a descent with a parachute, there is a case where a descent is performed by pulling an open umbrella string from the beginning. However, as in sky diving, the descent attitude is first controlled in a free descent state to reach the vicinity of a descent target point. In some cases, the umbrella may open, descend, and land. In order to train such a free descent state, a free descent simulated vertical wind tunnel is used.

FIG. 2 shows an example of a conventional free-falling simulated vertical wind tunnel. The applicant's Japanese Patent Application No. Hei 7-13
No. 2144 discloses a similar wind tunnel. In the figure, the wind tunnel comprises a circular or polygonal outer cylinder 1 and an inner cylinder 2. The outer cylinder 1 is covered with a bottom 3 and a top plate 4, and the outer cylinder 1 and the inner cylinder 2
The space between them forms an air supply passage 5. The air supply passage 5 is at the bottom 3
, And is connected to the air passage 6 provided on the central axis of the outer cylinder 1 and the inner cylinder 2. A floating chamber 7 for simulating a free descent is provided at an upper portion of the air blowing passage 6, and an air discharging passage 8 is connected to the upper portion of the floating chamber 7.

An air supply port 9 is provided at an upper portion of the air supply passage 5, and sucks air, passes through a silencer 10, and flows into a blower passage 6. An axial blower 11 is provided in the blower passage 6 to accelerate the sucked air to a speed necessary for floating the floating person in the floating chamber 7. On the outlet side of the blower 11, a rectifying honeycomb 12 is provided, on which a diagonal flow / fluctuating wind generating blade 13 for generating a diagonal flow or a fluctuating wind in the floating chamber 7 to simulate an actual situation.
Is provided. A fall prevention net 14 is doubly stretched at the outlet of the air passage 6. A suction prevention net 15 is provided at the top of the floating chamber 7 to protect the floating person. In the exhaust passage 8, one vertical passage exiting from the floating chamber 7 is divided into a plurality of upper passages, for example, 6 to 8, and the total cross-sectional area is 6 to 8 times the vertical passage, and the flow velocity is 1/6 to 1 / 8 so that the silencer 10 provided at the exit works effectively.

[0005]

In some cases, such a wind tunnel device is provided in an entertainment facility as an entertainment device. The recreational facilities include an indoor stadium, a game center, and the like in a large building, and a large-scale ventilation system. This ventilator has an exhaust device and is provided with a large exhaust duct and an exhaust blower. Although a large capacity blower is used for the wind tunnel device, its use frequency is small. For this reason, providing separate blowers for the wind tunnel device and the exhaust device increases equipment costs and maintenance costs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an economical combined exhaust device that uses both a wind tunnel device and a blower of a building exhaust device.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, air is blown up from a lower part of a floating space by a blower to float the floating person in the air, and air is discharged to the outside from an upper exhaust passage. A vertical wind tunnel for simulating a free descent to be discharged, a building exhaust duct connected to the inlet of the blower, and an outlet exhaust passage connected to the outlet of the blower,
A damper provided at an air inlet below the floating space to open and close the air inlet.

[0008] An exhaust duct of the building is connected to the inlet side of the wind tunnel blower so as to suck the exhaust of the building. Further, an outlet exhaust path is provided on the outlet side of the blower, branching off from the flow path flowing into the floating space. A damper for opening and closing the air inlet is provided at the air inlet below the floating space. Thereby, when the damper is closed, the blower functions as an exhaust blower of the building, and when the damper is opened, the air from the blower flows to both the outlet exhaust path and the floating space, and functions as an exhaust and wind tunnel blower.

According to the invention of claim 2, an outside air intake duct is connected to the building exhaust duct, and a damper is provided in the outside air intake duct, and is opened and closed in conjunction with the damper at the air inlet.

[0010] When the exhaust and the air supply to the floating space are performed in parallel, the air flow is insufficient with only the amount of exhaust supplied from the building. Therefore, a duct for taking in outside air is provided. The outside air intake duct is provided with a damper, and is opened and closed in conjunction with the damper at the air inlet. Accordingly, when air is blown into the floating space, the air flow does not run short.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described with reference to the drawings. 2 denote members and devices having the same function. FIG. 1 shows a combined exhaust device according to an embodiment. In the figure, the wind tunnel comprises a circular or polygonal outer cylinder 1 and an inner cylinder 2. The outer cylinder 1 has a bottom 3 and a top plate 4
And a part of the space between the outer cylinder 1 and the inner cylinder 2
6 is formed. The exhaust passage 26 bends at the lower part in the direction of the central axis of the outer cylinder 1 and the inner cylinder 2 and connects to the air passage 6 provided on the central axis. The ventilation passage 6 extends radially outward at the lower part and connects to the building exhaust duct 20. An axial blower 11 is provided on the center axis of the blower passage. Building exhaust duct 20
Is provided with an outside air intake duct 23,
The outside air is taken in from the outside air intake 24. An outside air damper 25 is provided inside the duct.

An air inlet 21 is provided directly above the air passage 6, and introduces air into the floating chamber 7 in which a free descending simulation state is performed. A damper 22 is provided at the air inlet 21 to introduce and shut off air into the floating chamber 7. This damper 2
Numeral 2 operates in conjunction with the outside air damper 25 to simultaneously open or close. A rectifying honeycomb 12 is provided at the air inlet 21, and a diagonal flow / fluctuating wind generation blade 13 for generating a diagonal flow or a fluctuating wind in the floating chamber 7 to simulate an actual situation is provided thereon. Above this, a fall prevention net 14 is doubly stretched.

Above the floating chamber 7, a suction preventing net 15 is provided.
Is provided, and an exhaust passage 8 is connected to the upper part. The exhaust passage 8 has a single vertical passage exiting from the floating chamber 7 divided into a plurality of upper passages, for example, 6 to 8 passages. Flow velocity of 1
/ 6 to 1/8 so that the silencer 10 provided at the outlet works effectively. The muffler 10 is also provided inside the exhaust port 27 to muffle exhaust gas.

Next, the operation will be described. When only exhausting from the building is performed, the damper 22 of the air inlet 21 and the damper 25 for outside air are closed, and the axial blower 11 exhausts the exhaust from the building through the exhaust port 27. When floating in the floating chamber 7, the damper 22 and the outside air damper 25 are opened to increase the output of the axial blower 11. At this time, blower 1
The flow velocity 1 is set to a velocity required for floating the floating person in the floating chamber 7, for example, about 70 m / sec. The degree of opening of the damper 22 when fully opened is such that the flow rate to the exhaust passage 26 is substantially the same as when exhaust is performed alone.
The effect of opening 2 on the exhaust system of the building is reduced. That is, the amount of air sent to the floating chamber 7 is almost taken from the outside air intake duct 23. When floating in the floating chamber 7, the oblique wind is generated by operating the mixed flow / fluctuating wind generating blades 13 or the flow velocity is changed.
Simulates an actual descent situation.

[0015]

As described above, according to the present invention, equipment costs and maintenance costs can be reduced by combining a wind tunnel device that simulates free descent with an exhaust device of a building, and economic efficiency is improved. Combined exhaust device can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing a combined configuration of a free fall simulation wind tunnel and a building exhaust system according to the present invention.

FIG. 2 is a configuration diagram of a conventional free fall simulation wind tunnel alone.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Inner cylinder 3 Bottom part 4 Roof 6 Air blow passage 7 Floating room 8 Exhaust passage 10 Silencer 11 Blower 12 Rectifying honeycomb 13 Mixed flow / variable wind generation blade 14 Fall prevention net 15 Suction prevention net 16 Exhaust port 20 Building exhaust duct 21 Air inlet 22 Damper 23 External air intake duct 24 External air intake 25 External air damper 26 Exhaust passage 27 Exhaust port

Claims (2)

[Claims] 1. A vertical air tunnel for simulating free descent for blowing air from a lower part of a floating space by a blower to float a floating person in the air and discharging air to the outside from an upper exhaust passage, and connected to an inlet of the blower. Building exhaust duct, an outlet exhaust passage connected to the outlet of the blower, and a damper provided at an air inlet below the floating space to open and close the air inlet. Characteristic combined exhaust system. 2. The outside air intake duct is connected to the building exhaust duct, and the outside air intake duct is provided with a damper, and is opened and closed in conjunction with the air inlet damper. Item 7. The combined exhaust device according to Item 1.