JP6975921B1 - Fuel economy reduction ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel-efficient ship in which a hydroelectric power generation device is arranged on the rear surface of a ship's screen and power is generated by a water flow flowing by the water flow. SOLUTION: The front surface of a blade 1 of a horizontal axis rotor 2 in a hydroelectric power generation device 5 is made to face the rear surface of a screw 8 of a ship 7, and the hydroelectric power generation device 5 is arranged at the rear part of the ship 7. A ship 7 for generating electricity by rotating the horizontal axis rotor 2 with running water flowed by 8. [Selection diagram] Fig. 1

Description

The present invention relates to a ship, and more particularly to a fuel-efficient ship that generates electricity by using the fluid water generated by the screen.

As the horizontal axis rotor in the power generation device, for example, there is a horizontal axis rotor as described in Patent Document 1.
The blade of this horizontal axis rotor collects the fluid in the middle of the length of the blade and collectively passes the fluid in the rearward direction.

Japanese Unexamined Patent Publication No. 2018-40304

As the rotor blade of the horizontal axis rotor, for example, the blade of a ship's screen or a wind turbine is generally used. If the number of blades is small, the rotation torque is small, and if the number of blades is large, water flow interference occurs as the blades rotate.
In addition, the ship is moving forward by flowing a water flow backward in the screu, and there is no case where a hydroelectric generator is installed on the rear surface of the scryu.
In the present invention, a hydroelectric power generator equipped with a horizontal axis rotor that does not cause water flow interference and increases the rotation speed even if eight or more blades are arranged on one hub is mounted on the rear surface of a ship's screw. It is an object of the present invention to provide a fuel-reducing vessel capable of reducing fuel consumption by driving a generator of a hydroelectric power generator to generate electricity by the fluid water flowing by the screen.

The present invention has taken the following technical measures to solve the above problems.

(1) Between the screen and the direction at the rear end of the ship, the axis of the horizontal axis rotor in the hydroelectric power generation device and the axis of the screen are concentric, and the front surface of the blade in the horizontal axis rotor. was allowed to face the rear surface of the Sukuriyu made by arranging the generator housing, it causes generated by the hydraulic power unit by rotating the horizontal axis rotor by flowing water was allowed to flow by the rotation of the Sukuriyu, the horizontal axis A fuel-reducing ship in which a rotor blade is rotated and running water passing along the blade is used as a propulsive force for the ship.

(2) the hydraulic power unit, the hub of the horizontal axis rotor is fixed to the forward rotation shaft of the generator which is disposed inside the power generating body which is supported by the support post at the stern, the hub circumferential surface the number of the blades, Yes and fixed parallel to the longitudinal direction of the rotor shaft of the base rotating front surface rises vertically in the front view of the blade in which the blade tip upward is greater from an intermediate height bent to rotate rear direction, the trailing edge of the rotating rear rises obliquely to the post-rotation direction from the base portion, bent to suddenly rotate rear direction at the tip vicinity, wherein the front of the blade tip surface and the rotation rear surface of the horizontal is arranged to be visible from the post-rotation surface in the flat担状in cross-section, fuel economy watercraft according gradually said trailing edge over to the blade tip to the is inclined in the front direction (1).

(3) The fuel-efficient ship according to (2) above, wherein the maximum chord length portion of the blade is near the tip surface of the wing.

(4) The blade tip surface of the blade is inclined so that the leading edge end is located in front of the front surface of the hub and the trailing edge edge is located on the rotation locus T of the blade center line S in a plan view. The fuel-efficient ship according to ( 2) or (3) above.

According to the present invention, the following effects can be achieved.

In the invention described in (1) above, since the front surface of the horizontal axis rotor of the hydroelectric power generation device is arranged to face the rear surface of the screen of the ship, the horizontal axis rotor is rotated by the water flow flowing by the screen to generate electricity. Therefore, the amount of power generation that can be deducted from the fuel consumption leads to the reduction of the fuel consumption.

In the invention described in (2) above, since the blade of the horizontal axis rotor in the hydroelectric power generation device is arranged so that the front and rear of the base are parallel to the rotor axis of the hub, the water flow hitting the front surface of the base of the blade passes through. It's easy to do. Since the rear surface of the blade can be seen from the front, the water flow that hits the rear surface of the blade pushes the blade in the direction of rotation, and the water pressure increases by pressurizing it. Efficiently rotate the shaft rotor to increase power generation efficiency.
The fact that the blade tip surface can be seen from the front means that the blade is inclined in the front direction, and the water flow that hits the rear surface of the rotation is held and passed in the rear direction, so that the rotation efficiency is improved. The trailing edge of the rotating rear surface, which can be seen from the front of the blade, gradually inclines toward the front toward the tip of the blade, but since it is along the rotor axis, the water flow passes toward the rear at high speed. That is, the receiving surface of an ordinary propeller is close to parallel to the rotation direction, but since the blade has an inclination close to the rotor axial direction, the water flow easily passes from the front to the back of the blade. Due to the Coanda effect caused by the shape of the brate when rotated, the passing water flow passes at a higher speed than the flow velocity of the water flow pushed out from the scruille, so that it can also contribute to the propulsive force generated by the scruille.

In the invention described in (3) above, since the maximum chord length portion of the blade is near the tip surface of the blade, the receiving area at the rotational centrifuge portion is large and the rotational efficiency is improved.

In the invention described in (4) above, the blade tip surface of the blade has a leading edge end located in front of the front surface of the hub and a trailing edge edge located on the rotation locus T of the blade center line S in a plan view. Even if the tip surface of the wing can be seen from the front, it is tilted so that
Since the leading edge edge is inclined and protrudes forward in the front, when rotating, this protruding leading edge edge holds the water flow to prevent lateral dissipation and causes the water flow to flow toward the back at high speed. Let it pass.

It is a front view of Example 1 of the rotor blade of this invention. It is a top view of the rotor blade of FIG. It is a left side surface (rotation front surface) view of the rotor blade of FIG. FIG. 3 is a sectional view taken along line IV-IV in FIG. FIG. 5 is a sectional view taken along line VV in FIG. FIG. 3 is a sectional view taken along line VI-VI in FIG. It is a front view of the horizontal axis rotor using the rotor blade of FIG. It is a top view of the hydroelectric power generation apparatus using the horizontal axis rotor of FIG. 7. FIG. 8 is a side view of a ship in which the hydroelectric power generation device of FIG. 8 is arranged at the rear of the screen. It is a side view of Example 2 of the hydroelectric power generation apparatus.

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of the lift-type rotor blade 1 of the hydroelectric power generation device 5 used for the fuel-efficient ship 7 with the wing tip facing upward. A plurality of rotor blades 1 (hereinafter simply referred to as blades) are fixed to the peripheral surface of the hub 3 of the horizontal axis rotor 2 at regular intervals. Although the number of sheets is not specified, a large number of sheets, such as 8 to 14 sheets, which cannot be considered in the past, can be used.

As shown in the front in FIG. 1, the blade 1 has a leading edge 1B rising vertically from the base 1A and rapidly rotating from approximately the middle of the blade length along the blade center line S passing through the rotor axis U. The wing tip surface 1F is formed so as to be horizontally long from the front by being greatly bent rearward (in the direction opposite to the rotation direction).

The chord length of the blade tip surface 1F is 2.8 to 3 times the front-rear width of the base portion 1A, and the maximum chord length portion of the blade 1 is in the vicinity of the blade tip surface 1F. Further, the length from the blade center line S to the trailing edge end 1c of the blade tip surface 1F is located at a position approximately 5.8 times the thickness of the base portion 1A, and receives the water flow received by the leading edge 1B portion of the rotating rear surface 1E. It is designed to guide in the direction after rotation.

In the blade tip surface 1F, the trailing edge 1c is located on the outer side of the rotation locus R of the leading edge 1b away from the rotor shaft 4, and the trailing edge 1C is formed upward from the leading edge 1B. The leading edge 1B is thick, and the trailing edge 1C is thin and curved inward (toward the rotor shaft 4) like a bird's beak when viewed from the front.

As shown in FIG. 1, the rotating front surface 1D of the blade 1 rises vertically from the base 1 to almost the middle of the blade length, bends greatly backward in rotation toward the blade tip, and moves forward in the chord length direction on the blade tip surface 1F. It bulges greatly from the edge 1b to the middle, and the rotation rear surface 1E on the blade tip surface 1F has the leading edge 1B portion inside (rotor shaft 4 side) with respect to the rotation locus R of the front edge end 1b, and is rear. The edge 1C portion is curved so as to be outward.

As a result, the water flow passing along the rotating rear surface 1E in the vicinity of the rotating rear surface 1E passes outward at a high speed in the back direction. However, as shown in the plan view in FIG. 2, the trailing edge end 1c on the blade tip surface 1F is on the rotation locus T of the blade center line S passing through the center of the base 1A of the blade 1, but the blade tip surface 1F. Since the leading edge edge 1b projects diagonally forward from the front surface 3A of the hub 3, the leading edge edge 1b embraces the water flow during rotation to prevent lateral dissipation, and the water flow is suppressed to the trailing edge. It passes toward the back surface toward the end 1c.

FIG. 3 is a left side surface (rotation front surface) view of the blade 1. The leading edge 1B portion visible at the right end of the figure gradually inclines toward the front (to the right of the figure) from the base 1A toward the wing tip, and suddenly moves toward the front at the nearest portion of the wing tip surface 1F. The wing tip surface 1F is protruding and the center of the thickness looks like a hemispherical shape because the shape of the leading edge 1B end of the base 1A continues to the wing tip as it is. Since the blade tip surface 1F is a substantially flat surface and has an inclination of about 60 ° ± 5 ° with respect to the rotor axis core line U, the water flow hitting from the front easily passes in the back direction.

The trailing edge 1C, which can be seen at the left end of FIG. 3, rises vertically from the base 1A, but suddenly greatly tilts in the front direction (to the right in the figure) from the middle of the blade length to the blade tip. Therefore, the tip of the wing is thin, the resistance of water at the tip of the wing becomes small during rotation, and the water flow from the front easily passes toward the trailing edge 1C on the back surface. Further, the water flow that hits the front surface during rotation is surrounded by the leading edge end 1b that protrudes in the front direction to suppress the dissipation to the lateral side.

FIG. 4 is a sectional view taken along line IV-IV in FIG. The rotation rear surface 1E of the blade 1 with respect to the rotor axis core line U is inclined at 18 ° to 20 °, and the water flow passing from the front is easier to pass than the conventional propeller, but the trailing edge 1C portion is in the rotation direction. Will be pressed. By pushing it, the water pressure increases in that part.

FIG. 5 is a sectional view taken along line VV in FIG. The rotation rear surface 1E of the blade 1 with respect to the rotor axis core line U is inclined at 33 ° to 35 °, and the water flow passing from the front is easier to pass than the conventional propeller, but the trailing edge 1C portion is rotated. It will be pushed strongly in the direction, increasing the rotation efficiency and increasing the water pressure at that part.

FIG. 6 is a sectional view taken along line VI-VI in FIG. The rotation rear surface 1E of the blade 1 with respect to the rotor axis core line U is inclined at 48 ° to 50 °, and the water flow passing from the front is easier to pass than the conventional propeller, but rotates the trailing edge 1C portion. It will be pushed strongly in the direction, increasing the rotation efficiency and increasing the water pressure at that part.

As can be seen from FIGS. 4 to 6, the rotating rear surface 1E of the blade 1 is substantially linear in a plan view, and as can be seen in FIG. 1, the rotating rear surface 1E is set so that the entire surface can be seen from the front. What you can see from the front can receive a lot of water flow from the upstream.

It is the same as a general propeller to receive a water flow in the front, but in the general propeller, the front is aligned with the rotation direction, whereas in the blade 1 of the present invention, the rotation rear surface 1E is the rotor axis. By inclining along the line U, even if the number of blades 1 is extremely large, the water flow can easily pass between the adjacent blades 1 from the front direction to the back direction. However, since the trailing edge 1C portion is inclined in the rearward rotation direction, the blade 1 is pushed in the rotation direction by the water flow hitting the trailing edge 1C portion, and the water pressure in that portion is increased.

FIG. 3 is a view seen from the rotation front surface 1D of the blade 1, and the front-rear width of the rotation front surface 1D is longer than the front-rear length of the base portion 1A. This indicates that the rotational resistance is large, but since it becomes thinner toward the wing tip, the rotational resistance gradually decreases in the centrifugal part during rotation.

Further, while the rotating rear surface 1E is a flat surface, the rotating front surface 1D has a large bulge as a feature of the lift type, so that the water flow hitting this surface passes at high speed and under negative pressure due to the Coanda effect.

However, as shown in FIGS. 4 to 6 showing the cross section of the blade 1, the trailing edge 1C gradually increases its inclination toward the trailing edge 1C from the base 1A to the blade tip. Even if this appears to be wide in FIG. 3, since the trailing edge 1C is greatly inclined, the water flow hitting the rotation front surface 1D passes through the rotation rear direction with a small resistance.

Further, as shown in FIGS. 4 to 6, the rotating front surface 1D greatly bulges from the leading edge 1B to the trailing edge 1C, so that the water flow passing along the rotating front surface 1D during rotation has the Coanda effect. As a result, the water flows at a speed higher than the speed of the water flow received from the front and becomes negative pressure.

Therefore, the blade 1 is pulled by the difference in water pressure in the direction of the rotation front surface 1D where the negative pressure is obtained, and the rotation efficiency is improved. At the same time, as shown in FIGS. 1 and 3, since the intermediate portion of the blade length is inclined toward the rear surface with respect to the portion of the blade tip surface 1F, the water flow passes in the rear surface 3B direction of the hub 3.

On the other hand, as shown in FIGS. 4 to 6, the rotating rear surface 1E is substantially linear from the leading edge 1B to the trailing edge 1C, so that the water flow hitting the rotating rear surface 1E rotates the blade 1. It will be pushed in the direction, and the water pressure will increase by pushing it. Here, between the blades 1, 1 arranged in large numbers on the hub 3, as can be seen in FIGS. 7 and 8, the gap is large in the portion near the blade tip.

Therefore, the water flow having a high water pressure that passes in the back direction along the rotation rear surface 1E of the blade 1 is sucked by the water flow that passes at high speed and negative pressure along the rotation front surface 1D due to the difference in water pressure, and is at high speed. Will pass in the direction of the back surface of the horizontal axis rotor 2.

In FIG. 7, the entire rotation rear surface 1E of the blade 1 can be seen from the front, but since the trailing edge 1C is inclined inward near the trailing edge end 1c of the blade tip surface 1F, it is embraced by the blade tip surface 1F. Since the water flow passing toward the back surface passes in a focused manner in the direction of the rotor axis U on the back surface, the water flow does not diffuse and becomes a strong water flow and passes at high speed.

Here, the major difference from a normal propeller is that the water flow passes from the front to the back between two adjacent blades, and moreover, the water pressure is applied to the rotating rear surface of the blade located in front during rotation. In other words, this means that the rotation speed of the blade 1 also increases, and the rotation efficiency of the horizontal axis rotor 2 increases.

FIG. 9 is a side view of a main part of the fuel consumption reducing ship 7 of the present invention. Since the hydroelectric power generation device 5 is the same as that shown in FIG. 8, the description thereof will be omitted. At the rear end of the hull 7A, the hydroelectric power generation device 5 makes the front surface (rotating rear surface 1E) of the blade 1 of the horizontal axis rotor 2 face the rear surface of the screen 8 via the support pillar 9 at the rear surface position of the screen 8. , The screen shaft 8A and the rotor shaft core wire U in the hydroelectric power generation device 5 are arranged so as to be concentric, and the rudder 10 is arranged at the rear portion.

A generator (not shown) is arranged inside the power generation housing 6 of the hydroelectric power generation device 5, and a cord for recovering the generated electricity is connected to a storage battery (not shown) in the hull 7A through the inside of the support pillar 9. ing. The hub 3 is fixed to a rotating shaft (not shown) protruding in front of the generator. Sign 6A is a cap.

In the hull 7A having the above configuration, when the screw 8 is normally rotated in water, the horizontal axis rotor 2 of the hydroelectric power generation device 5 is rotated by the water flow flowing backward, and a generator (not shown) in the power generation housing 6 is generated. The hull 7A can move forward like a normal ship by the water flow that generates electricity and rotates the blade 1 of the horizontal axis rotor 2 and passes linearly backward.

Generally, the water flow extruded by the screen 8 has a high rate of diffusing laterally, so that there is a loss. It was confirmed that when the water flow extruded by the screen 8 hits the front surface of the blade 1 of the horizontal axis rotor 2, it passes linearly and at high speed backward without resistance and greatly contributes to propulsion.

It was also confirmed that the water flow passing between the many blades 1 of the horizontal axis rotor 2 was faster than the flow velocity of the water flow extruded by the screen 8.
It is a natural phenomenon due to the Coanda effect that is inevitably caused by the shape of the blade 1 as described in "0030 to 0035".
That is, it is the same natural phenomenon that a strong tornado is generated when a partial low pressure is generated in a constant atmospheric pressure, and it is due to the kinetic force of the mass of water.

The water flow extruded and flowed by the screen 8 disappears as it is, but when power is generated using that water flow, the amount obtained by subtracting that power from the fuel consumption is equivalent to the reduction of fuel consumption, and the energy is reduced. The great effect of reuse can be obtained.

FIG. 10 is a side view showing the second embodiment of the hydroelectric power generation device 5. In the second embodiment, the generator 11 is arranged inside the hull 7A, and the transmission cap gear 11B fixed to the tip of the rotating shaft 11A and the transmission shaft 12 arranged vertically inside the support pillar 9. It is meshed with the transmission cap gear 12A on the upper part of the.

The transmission cap gear 12B fixed to the lower end of the transmission shaft 12 and the transmission cap gear 4A fixed to the rear end of the rotor shaft 4 are meshed with each other. As a result, when the horizontal axis rotor 2 of the hydroelectric power generation device 5 rotates, the rotational force is transmitted to the generator 11 via the transmission shaft 12 to generate electric power, and the electric power is stored in a storage battery (not shown).

The water flow extruded by the screw 8 in this way disappears as it is after becoming the propulsive force of the ship 7, but the water flow immediately before the disappearance is used as the power of the generator and is abandoned. Energy can be reliably reused.
Moreover, it is recognized that the water flow that comes out of the screen 8 and passes between the blades 1 of the horizontal axis rotor 2 of the hydroelectric power generation device 5 at high speed increases the flow velocity and contributes to the propulsive force.

In the present invention, the hydroelectric power generation device 5 provided with the blades 1 in which the interference of the water flow does not occur even if eight or more blades 1 are arranged on one hub and the rotation speed increases, is used in the screen 8 of the ship 7. It is widely used for ships that can generate electricity by arranging it on the rear surface.

1. 1. Rotor blade 1A. Base 1B. Leading edge 1b. Leading edge edge 1C. Trailing edge 1c. Trailing edge 1D. Rotating front 1E. Rotating rear surface 1F. Wing tip surface 2. Horizontal axis rotor 3. Hub 3A. Front 3B. Back 4. Rotor shaft 4A. Transmission cap gear 5. Hydroelectric power generator 6. Power generation housing 7. Ship 7A. Hull 8. Scriyu 9 Support pillar 10. Direction 11. Generator 11A. Rotating shaft 11B. Transmission cap gear 12. Transmission shafts 12A, 12B. Transmission cap gear R. Rotational locus of the leading edge of the wing tip surface S. Blade center line T. Rotational locus of blade center line S U.S.A. Rotor axis core wire

Claims (4)

Between the screen and the direction at the rear end of the ship, the axis of the horizontal axis rotor in the hydroelectric power generation device and the axis of the screen are concentric, and the front surface of the blade in the horizontal axis rotor is the screen. The power generation housing is arranged so as to face the rear surface, and the horizontal axis rotor is rotated by the flowing water flowed by the rotation of the screw to generate power by the hydroelectric power generation device , and the blade of the horizontal axis rotor is generated. A fuel-reducing vessel, characterized in that running water passing along the blade is used as a propulsive force for the vessel. The hydraulic power unit, the hub of the horizontal axis rotor is fixed to the forward rotation shaft of the generator which is disposed inside the power generating body which is supported by the support post at the stern, a large number of the hub circumferential surface The blade has its base fixed in the front-rear direction parallel to the rotor axis, and the vertically rising front surface of the blade with the wing tip facing upward in the front view is largely from the middle of the height to the rear direction of rotation. bent to rear edge of the rotating rear rises obliquely to the post-rotation direction from the base portion, sharply bent in the post-rotation direction at the blade tip vicinity, so that the rotating rear and laterally long blade tip surface is visible from the front disposed, the post-rotation surface in the flat担状in cross-section, fuel economy watercraft according to claim 1, characterized in that over the said tip is made to gradually tilting the trailing edge in the front direction .. The fuel-efficient ship according to claim 2 , wherein the maximum chord length portion of the blade is in the vicinity of the tip surface of the blade. The blade tip surface of the blade is inclined so that the leading edge end is located in front of the front surface of the hub and the trailing edge edge is located on the rotation locus T of the blade center line S in a plan view. The fuel consumption reduction vessel according to claim 2 or 3, wherein the vessel is characterized by the above.

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