JP2005239099A - Spiral barrel propeller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spiral barrel propeller saving energy and having high performance by an extremely simple means. <P>SOLUTION: Propulsive force in a fixed direction is induced by a spiral rotary motion effect based on a principle of a screw and a principle of pressure gradient (Bernoulli) acting the whole surface on an outer periphery of the spiral barrel by rotation, in the spiral barrels of shaft type and vane type spiral barrel propeller mounted on a rotary shaft. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a ship and aircraft propulsion device.

In the conventional helical rod screw, at the screw boss installation site, the screw shaft front head is mounted concentrically on the rotating shaft, and the spiral shaft front head is launched by a spiral spiral that converges on the screw boss. As a result of the spiral structure, the vortex generated by the centrifugal force at the converging spiral spiral part hinders smooth fluid movement, generating drag and significantly reducing the propulsion function. there were.
JP-A-6-247384

  An object of the present invention is to improve the propulsion function in the propulsion device, and the spiral outer periphery of the spiral drum rotating portion is formed at an equal spiral pitch angle, and the front portion of the spiral drum does not converge on the screw boss. In Japanese Patent Laid-Open No. 6-247384, the drag generated at the converging part of the spiral shaft is eliminated, the smooth fluid movement is promoted, and the shape of the spiral body is classified into a shaft shape and an airfoil shape. In order to achieve further high-speed performance, the wing-type structure of the multi-helical body is designed to reduce the size and increase the output of the device by increasing the thrust by adding the blade effect.

Means to solve the problem

According to the first aspect of the present invention, the rotary shaft 2 is driven to rotate by the transmission shaft 1, and the shaft body and the wing-shaped spiral body 3 having the same spiral pitch angle formed concentrically with the rotation shaft are mounted. This is a spiral cylinder thruster that induces a propulsive force by the effect of spiral rotation of the spiral cylinder. In the multi-helix airfoil spiral cylinder, the top of the spiral cylinder is shifted in the rotation direction. As a result, the streamline at the time of spiral rotation becomes a wing shape, and the blade surface effect acts.
Furthermore, by making the joint part of the above-mentioned spiral cylinder stretchable in the vertical direction, by making the spiral cylinder material stretchable and adjusting the cross-sectional area of the spiral cylinder, it has a variable pitch angle function and propulsion. The development of axial and airfoil multi-helical propulsion propellers with design options that coordinate functions and induce arbitrary propulsive forces.

The invention's effect

  The helical cylinder propulsion device according to the present invention is formed in the first half portion in which the cross-sectional area is gradually increased by rotating an axial or wing-shaped helical cylinder having a thin section at both ends and a large section at the center. In this case, the fluid velocity in contact with the outer periphery of the helical cylinder gradually increases as the cross section increases, and gradually decreases as the cross section decreases in the latter half of the cross sectional area.

  When the fluid velocity increases, the pressure decreases, and when the fluid velocity decreases, the pressure increases (Bernoulli's theorem). That is, the principle of the pressure gradient due to the difference in flow velocity on the outer surface of the spiral cylinder as a rotating body, and the spiral cylinder The driving force is based on the principle of screwing that acts on the entire contact surface with the fluid on the outer peripheral surface by flow resistance.

  By improving the converging part of the spiral screw, the propulsion function was improved by reducing the drag, and the introduction of the airfoil reduced the size of the device with high thrust.

  First Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 and FIG. 2 are schematic views showing an embodiment of an airfoil and shaft type helical cylinder and a multiple helical cylinder propulsion device according to the present invention.

  1 and FIG. 2, the helical trunk propulsion device shown in FIG. 1 is formed on the outer periphery of a rotary shaft 2 mounted on a transmission shaft 1, and FIG. A spiral cylinder with an equal spiral pitch angle of 2 is formed concentrically with the rotation axis, and the thrust is induced by rotation of a spiral cylinder with a shape that is gradually sharpened at both ends with the longitudinal center section being maximized. In a multi-spiral wing-shaped spiral cylinder, by shifting the apex of the spiral cylinder in the rotational direction, the streamline at the time of spiral rotation becomes a wing shape, and the blade surface effect is added. .

  FIG. 4 is a vertical cross-sectional view centering on the rotation axis of the multi-spiral-blade propeller, and FIG. 5 is a schematic configuration diagram of the spiral-blade propeller.

  6 is a cross-sectional view of FIG. 5, FIG. 7 is a cross-sectional view of FIG. 5, and FIG. 8 is a cross-sectional view of FIG.

  The application of the propulsion principle of the helical trunk propulsion device has great potential in the aircraft field. When compared with the helical rod-like screw, it enables small energy savings by improving performance.

  Furthermore, the pressure gradient based on the shape of the helical cylinder, as well as the wing principle, when compared with a conventional screw, which is based on the principle of the screw, and agitating the fluid with rotating blades to generate a huge amount of stirring turbulence Due to the difference in the system that induces the propulsive force by, particularly in a super-high-speed ship of 40 knots or more, it brings about a revolutionary performance improvement in a different dimension.

It is a schematic structure figure showing an embodiment of a shaft type spiral trunk propelling device. It is a schematic block diagram of a wing type | mold multi-helical trunk propellant. It is a schematic block diagram of a helical rod propeller. It is a vertical sectional view of a wing type multiple spiral trunk propulsion device. It is a schematic block diagram of a wing type spiral trunk propulsion device. It is sectional drawing of the code | symbol A of FIG. It is sectional drawing of the code | symbol B of FIG. It is sectional drawing of the code | symbol C of FIG.

Explanation of symbols

1 Boss 2 Support Case 3 Rear Support Case 4 Transmission Shaft 5 Rotating Shaft 6-Axis Helical Cylinder 7 Wing Spiral Cylinder 8 Wing Spiral Cylinder

Claims (1)

  A spiral mounted on the outer periphery of a rotating shaft, which induces a propulsive force by rotation of a shaft-type and airfoil-type multi-helical cylinder of equal spiral pitch angle with a large center and a small cross-sectional area at both ends. Torso propeller.

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