JPH05213271A - Lift generating device - Google Patents

Abstract

PURPOSE:To make the effective utilization of energy possible and to obtain a safer lift generating device by controlling the blowout speed and/or suction speed of fluid getting in and out through the hole of a cylindrical structure having multiple holes provided on its outside to change the magnitude of lift generating around the cylindrical structure. CONSTITUTION:Many blowout ports 2, 2' are provided on the outside of a cylinder 1 in its axial and circumferential directions. Air getting in and out ports are directly connected to pieces 3, 3', which are severally connected to pumps 4, 4'. The direction of the generation of lift, namely the clockwise or counterclockwise direction of air flow depends upon the strength and direction depend upon the magnitude of required lift to operate a lift generating device. Thus, the speed of air getting out through the holes 2, 2' is controlled to change the direction and magnitude of the generated lift.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift generating device capable of changing the magnitude of lift generated by controlling the flow of air or water around a columnar structure.

[0002]

2. Description of the Related Art In recent years, energy saving has been emphasized even in the case of marine transportation, and those utilizing wind, that is, sailing ships, have been revived and are useful for marine transportation. There are various methods using such wind power, but there is a method in which a columnar structure is erected vertically on a ship and rotated, and lift is generated by the Magnus effect to obtain propulsive force. Although a propulsion device utilizing the Magnus effect is well known, it is carried out as follows, for example, as disclosed in "Wind-powered propulsion device" (published in Showa 63-195998) filed by Mitsubishi Heavy Industries, Ltd. .. FIG. 5 (a) shows a cross section of a cylinder. Here, 11 is a cylinder, and a is a state of air flow around this cylinder. Suppose that it is flowing in the direction. In such a case, the air flow around the cylinder becomes symmetrical with respect to the center line of the cylinder. At this time, the force b due to the flow acts on the cylinder in the same direction as the direction of the air flow. The center of this force passes through the center of the cylinder. However, when the cylinder 1 is rotated in the direction of the arrow as indicated by c in FIG. 5B, the air flow around the cylinder 1 changes like d. That is, the flow velocity of air at this time is U0, and the peripheral velocity of the cylinder is V
Then, the velocity of the fluid near the surface of the cylinder is
In A) of (b), U1 = U0 + V, and in the lower part (B of FIG. 5 (b)), U2 = U0-V. The pressure of the lower part is higher than that of the upper part, and the force f from the lower part to the upper part acts. . 6 and 7 are explanatory views when the principle of FIGS. 5A and 5B is mounted on a ship as a specific example, and FIG. 7 is a cross-sectional view taken along the line AA ′ of FIG. 6. .

In FIG. 6, 11 is a rotating cylinder, and 12 is a cylinder 11.
Is a vertical axis, and the cylinder 11 is the axis 1
Sleeves for rotating around 2, 14a, 14b
Is connected so as to move integrally with the cylinder 11. Reference numerals 14a and 14b are frames for connecting the sleeve 13 and the cylinder 11, and 15 is a gear attached to the sleeve 13b, which meshes with a gear 16 directly connected to a drive motor 17. Therefore, when the drive motor 17 rotates, the gear 16 drives the gear 15, and the cylinder 11 integrally coupled with the gear 15 can rotate. In FIG. 6, as a method for imparting rotational motion to the cylinder 11, gears 15,
Although the motor drive system via 16 is illustrated, another method may be used. Reference numeral 18 in FIG. 6 is a simplified diagram showing the cross section of the ship, and is an example in which a series of devices from the rotary cylinder 11 to the drive motor 17 are installed. In this figure, when the cylinder 11 is rotated at the peripheral speed V when the wind with the wind velocity U0 blows from the left side of the figure, as shown in FIG. 5B, the thrust T acts in the direction perpendicular to the wind blowing direction. However, the hull 18 can be moved.

[0004]

However, on the contrary, in such a device, the device for rotating the cylindrical structure becomes large, and the expected energy saving effect may not be obtained. Since the thrust T generated by the above-mentioned device is generated by the relative speed between the wind speed U0 and the peripheral speed V of the cylinder, the cylinder must be given a rotational motion. In the example of FIG. Are dependent on. Therefore, considerable power is required to impart rotational movement to the cylinder. Further, when the wind direction and the wind speed suddenly change, it is necessary to control the drive motor such as stopping or reversing the rotation, which not only puts an extremely large load on the drive motor, but is also dangerous.

The present invention is intended to solve the above-mentioned drawbacks, and provides a lift generating device which controls lift by a change in wind direction and wind speed by a simple method with relatively small power and improves safety. The purpose is to do.

[0006]

For this reason, the lift generating device of the present invention is provided with a large number of holes around the cylindrical structure to allow air to be taken in and out, and air can be taken in and out from the holes, that is, air can be taken in and out. By controlling the blowing speed and the sucking speed of, the air flow around the cylindrical structure was changed, and the lift force generated in this was controlled.

[0007]

In the above structure, the direction and magnitude of the lift force generated are changed by controlling the velocity of the air flowing in and out of the hole in the outer wall of the columnar structure which is the lift force generator.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lift generating device as an embodiment of the present invention will be described below with reference to the drawings. 1, 2, 3, and 4 are views for explaining the device of the present invention. In the present invention, as shown in FIG. 1, along the outside of the cylinder 1, the outlets 2 and 2'as shown in the figure are provided.
Are provided in the axial direction and the circumferential direction of the cylinder. The air inlet / outlet is directly connected to the pipes 3 and 3 ′, and the pipes 3 and 3 ′ are connected to the pumps 4 and 4 ′, respectively. Reference numeral 6 is a column that supports all of these components. However, in FIG. 1, the air inlets and outlets are partially connected by the pipes 3 and 3 ′ in order to avoid complexity of the drawing, but actually all the inlets and outlets 2 and 2 ′ and the pipes 3 and 3 ′ are directly connected to each other. ..

FIG. 3 is a sectional view taken along the line AA 'in FIG. Here again, only the cylinder and the air inlet / outlet are shown by simplifying the drawing. When air is blown from the outlet 2 in FIG. 3 like g, the flow of air around the cylinder becomes like h, and the same effect as described in FIGS. 5A and 5B is obtained. can get. That is, the force generated at this time is the resistance force i against the wind.
And the lift force j acting in a direction perpendicular to this. Conversely, the same is true when air is blown from the mouth of 2'as shown by g '. At this time, the lift acts in the direction of j', contrary to the former case. In addition, without blowing out air, as shown in FIG.
It is the same even if you inhale air from 2 or 2 '. However, at this time, the direction in which the lift force is generated is opposite to that in the case of blowing out. Further, in some cases, air blowing and suction may be combined. And when such air is blown out or sucked in, the device therefor becomes relatively simple.

To explain with reference to FIG. 1, which direction the lift is to be generated depends on the strength and the direction of the current wind.
That is, to make the air flow clockwise (clockwise),
Whether to operate the pump 4 or the pump 4'depending on the counterclockwise rotation (counterclockwise rotation) and how strong the lift is, and how much load Decide and drive.

According to the experiments conducted by the inventor in the room, the energy saving effect of the present invention is up to about 5% as compared with the conventional method (that is, the same lift force is obtained by 95% of the power as compared with the conventional method. Can be generated). FIG. 2 is a configuration diagram when the device of the present invention is applied to a general ship. The device 1 of the present invention is connected to the boat 5 via a support column 6. In this case, the pumps are operated so that the lift is generated on the right side with respect to the wind blowing in the direction perpendicular to the paper surface.

[0012]

Therefore, when using the device of the present invention,
It requires less moving parts like the conventional one, and its energy saving effect is greater than that of rotating a cylinder. Further, even if the wind speed and the wind direction change suddenly, the lift force can be easily controlled by controlling the load of the pump, and the safety is high. Furthermore, this can be applied not only to a columnar structure but also to a columnar structure having a cross-sectional shape close to a circle, and the fluid can function not only in the air but also in the water. Therefore, the device of the present invention enables effective use of energy and can provide a safer lift generating device, which is industrially useful.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of the present invention.

FIG. 2 is an explanatory diagram when the device of the present invention is applied to a ship.

FIG. 3 is a sectional view taken along the line A-A ′ in FIG.

FIG. 4 is an explanatory diagram of the flow of air near the air inlet and outlet.

FIG. 5 is an explanatory diagram of the Magnus effect.

FIG. 6 A concrete example of a conventional device

FIG. 7 is a sectional view taken along the line A-A ′ of the rotating cylinder 11.

[Explanation of symbols]

 1 Cylinder 2, 2'Air inlet / outlet 3,3 'Pipe 4,4' Pump 5 Ship 6 Strut 11 Rotating cylinder 12 Rotating shaft 13a, 13b Sleeve 14a, 14b Frame 15, 16 Gear 17 Drive motor 18 Ship a Air flow b resistance force c rotation direction d air flow e resistance force f lift force g, g'air blowing h air flow i resistance force j, j 'lift force

Claims (1)

[Claims] 1. A blow-out speed and / or a suction speed of a fluid such as air or water flowing in or out of the hole of a columnar structure having a large number of holes on the outer side thereof or a columnar structure having a cross section of a nearly circular shape. The lift generating device is characterized in that the magnitude of the lift generated around the structure is changed by controlling the lift.