JPH0515200Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a ship propulsion device using wind power.

[Conventional technology]

Conventionally, as a wind-powered ship propulsion system, for example, as shown in the perspective view of FIG. There is a Flettonner ship 021 that obtains.

As shown in the partially enlarged plan view of Figure 6, this type of Fletner ship 021 receives wind 06 at a relative wind speed V, which is the vector sum of the ship speed and the absolute wind speed, in a direction at an angle θ with respect to the propulsion direction x. When rotor 01 is rotated clockwise in this state, lift force L,
A drag force D is generated, and as a result, the following propulsive force Fx is obtained in the propulsion direction.

Fx=Lsinθ−Dcosθ However, in such a device, the rotor 01
Since the rotor 01 is rotated by an electric motor, power loss is generally equivalent to about 30% of the propulsive power obtained by the rotor 01.

Therefore, as shown in the perspective view of FIG.
Above, parallel vertical wings 03, 03 are pivoted via wing axes 08, 09 equidistantly and symmetrically in parallel with respect to the vertical center axis Z, and a horizontal arm 04 that pivots their upper ends. Darius-type wind turbine consisting of 0
We proposed a device that rotates the rotor 01 by using the force of the wind by attaching the rotor 01.

However, in a Flettonner ship in which the Darius-type wind turbine 05 is installed protruding from the top of the rotor 01, the height of the structure on the upper deck is restricted when passing under bridges, etc., so the height of the rotor 01 is limited. It cannot be made very large, which not only limits its output, but also makes the rotor top-heavy, which poses problems in terms of strength and stability.

[Problem that the invention attempts to solve]

The present invention was proposed in view of these circumstances, and aims to eliminate the loss of horsepower consumed by the rotation of the vertical cylinder, maximize the thrust obtained by the vertical cylinder, and lower the overall height. The purpose of the present invention is to provide an energy-saving wind-powered ship propulsion device that can facilitate passage under bridges and stabilize the ship.

[Means for solving problems]

To this end, the present invention provides a wind-powered ship propulsion system that obtains propulsive force by rotating a vertical cylindrical body installed on a ship around its vertical center line. It is characterized by comprising Darrieus-type wind turbine blades arranged symmetrically with respect to each other and rotating the vertical cylindrical body.

[Effect]

With the above configuration, the torque necessary for the rotation of the vertical cylindrical body can be obtained by the Darius type wind turbine installed symmetrically to the vertical center line on the side of the vertical cylindrical body, and the overall height can be reduced. This makes it possible to stabilize the ship and facilitate passage under bridges.

〔Example〕

To explain the embodiment of the present invention with reference to the drawings, Fig. 1 is a perspective view thereof, Fig. 2 is a horizontal cross-sectional view showing the operating state when the device of Fig. 1 receives wind from the port side, and Fig. 3 is a perspective view thereof. A horizontal sectional view showing the operating state of the device shown in Figure 1 when it receives wind from the starboard side.
It is the same perspective view which shows the modification of a figure.

In the above figure, the same symbols as in Figs. 5 to 7 indicate the same members as in the same figure. First, in Fig. 1, 1 is a vertical shaft established on the upper deck so as to be rotatable around the vertical axis Z. The rotors 2 and 2a are horizontal circular top plates and bottom plates that close the upper and lower ends of the vertical rotor 1, respectively, and the rotors 3 and 3 are arranged symmetrically at equal intervals on the sides of the vertical rotor 1, and
Parallel vertical blades 5 whose upper and lower ends are pivoted by horizontal arms 4, 4 extending horizontally from the top plate 2 and the bottom plate 2a to the sides, respectively, are Darrieus type wind turbines constituted by 3 and 4 working together. Here, 6 and 7 are wind, respectively.
8 and 9 are wing axes, respectively.

In such a device, as shown in FIG. 2, when the vertical rotor 1 receives wind 6 from the port direction at a wind speed V, the vertical blade 3 passes on the port side of the vertical axis Z relative to the wind 6. When passing on the starboard side, the leading edge points toward the bow, and when passing on the starboard side, the leading edge points toward the stern, and if r is the radius of rotation of the vertical wing 3, the clockwise rotation will be as shown in the following formula. torque is generated respectively.

The torque generated by the port side vertical blade 3 is T _p = (L ₁ sinα ₁ − D ₁ cosα ₁ ) × r The torque generated by the starboard side vertical blade 3 is T _s = (L ₂ sin α ₂ − D ₂ cos α ₂ ) × r Here, W ₁ is the inflow speed of the wind into the port side vertical wing 3,
W ₂ is the speed of wind inflow into the starboard side vertical blade 3, α ₁ is the inflow angle of the wind into the port side vertical blade 3, and α ₂ is the inflow angle of the wind into the starboard side vertical blade 3.

Since the vertical rotor 1 rotates clockwise due to the torques T _p and T _s , a thrust is generated in the propulsion direction x for the same reason as shown in FIG.

Further, as shown in FIG. 3, when the vertical rotor 1 receives wind 7 from the starboard direction at a wind speed V, the vertical blades 3, 3 are moved 180 degrees from the case of FIG.
9 to obtain counterclockwise torque, the vertical rotor 1 is rotated counterclockwise, and as a result, a thrust is generated in the propulsion direction x for the same reason.

Note that the vertical blades do not necessarily need to extend over the entire height of the rotor 1, and may be arranged side by side only in a portion thereof.

That is, in FIG. 4, 3a and 3a are arranged symmetrically at equal intervals on both sides of the upper half of the vertical rotor 1, and their upper and lower ends are horizontally connected to the top plate 2 and the side wall of the vertical rotor, respectively. Parallel vertical wings 5 pivoted on extending horizontal arms 4, 4a;
3a, 4, and 4a cooperate to form a Darium-type wind turbine. Even with this structure, in addition to achieving the same effect as the Darius-type wind turbine 5, Since there are no rotating parts, the general arrangement of the upper deck is easy.

According to such a device, the following effects can be achieved.

(1) Since the torque necessary to rotate the vertical rotor can be obtained by the Darrieus-type wind turbine attached to the side thereof, it is possible to save energy in the wind-powered ship propulsion system.

(2) Since the Darius-type wind turbine is attached to the side of the vertical rotor, the overall height of the device is lowered, making it easier to pass under bridges and stabilizing the hull, and the rotation radius of the Darius-type wind turbine from the vertical stop line of the vertical rotor. can be large, and therefore large torque can be obtained.

[Effect of idea]

In short, according to the present invention, in a wind-powered ship propulsion device that obtains propulsive force by rotating a vertical cylindrical body installed on a ship around its vertical center line, the vertical center line is located on both sides of the vertical cylindrical body. By providing Darrieus-type wind turbine blades that are arranged symmetrically with respect to the cylinder body and rotate the vertical cylinder body, the loss of horsepower consumed in the rotation of the vertical cylinder body is eliminated, and the thrust obtained by the vertical cylinder body is maximized. In addition, the present invention is industrially extremely useful because it provides an energy-saving wind-powered ship propulsion device that can reduce the overall height to facilitate passage under bridges and stabilize the ship.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the present invention, Figure 2 is a horizontal sectional view showing the operating state of the device in Figure 1 when it is exposed to wind from the port side, and Figure 3 is a perspective view of the device in Figure 1 from the starboard side. FIG. 4 is a horizontal sectional view showing the operating state when exposed to wind, and FIG. 4 is a perspective view showing a modification of FIG. 1. Figure 5 is a perspective view of a known Flettner ship;
The figure is a partial horizontal sectional view taken along the - line in Figure 5.
FIG. 7 is a perspective view of a vertical rotor according to the applicant's earlier patent application No. 61-314096. 1...Vertical rotor, 2...Top plate, 2a...Bottom plate, 3...Vertical blade, 4...Horizontal arm, 5...Darrius type windmill, 6, 7...Wind, 8, 9...Blade axis, D
...Drag force, L...Lift force, V...Wind speed, W ₁ , W ₂ ...
...Inflow speed of wind into the vertical blade, x... Propulsion direction, Z...
...Vertical central axis, α... angle, α ₁ , α ₂ ... angle of inflow of wind into the vertical blade, θ... angle.

Claims (1)

[Scope of utility model registration request] In a wind-powered ship propulsion device that obtains propulsion force by rotating a vertical cylindrical body installed on a ship around its vertical center line, the wind-powered ship propulsion system is arranged symmetrically with respect to the vertical center line on both sides of the vertical cylindrical body. A wind power vessel propulsion device comprising a Darrieus-type wind turbine blade that rotates the vertical cylindrical body.