CN108698678A

CN108698678A - Horizontal axis rotor and the boat for having horizontal axis rotor

Info

Publication number: CN108698678A
Application number: CN201780014048.XA
Authority: CN
Inventors: 铃木政彦
Original assignee: Global Energy Co Ltd
Current assignee: NTN Corp
Priority date: 2016-03-01
Filing date: 2017-02-22
Publication date: 2018-10-23
Also published as: JP2017154576A; WO2017150299A1; EP3424811A1; US20190009873A1; KR20180120709A; EP3424811A4

Abstract

The present invention provides low-power and the horizontal axis rotor of high rotation efficiency, is not released fluid by blade, so that with the Coanda effect for rotating generation using blade, high velocity stream is flowed to back side direction, propulsive force is obtained by reaction.On lift-type blade (1), the bulging face of big arcuation will be set as in chord line by the front (3D) in stream direction, and the back side (3E) for making to release direction is less than the bulging of positive (3D), becomes propulsive force along positive chord line, from the rear portion (3G) by the high velocity stream in the direction the back side (3E) when rotation.

Description

Horizontal axis rotor and the boat for having horizontal axis rotor

Technical field

The present invention relates to horizontal axis rotor and has the boat of the rotor, more particularly to making being flowed for lift-type blade Face substantially bloats and makes wing tip to by the inclined horizontal axis rotor in stream interface direction and having the boat of the rotor.

Background technology

Such as being described in patent document 1 makes wing tip to by the stream inclined blade in direction.

Existing technical literature

Patent document

Patent document 1:Japanese Laid-Open Patent Publication 2007-125914

Rotor blade described in patent document 1, if being applied on the pusher of such as ship, due to being to use blade Water outlet is pushed, so to surpass the torque that the resistance of water needs big power.

Invention content

The object of the present invention is to provide a kind of rotors, do not release fluid with blade, are rotated, made along leaf by blade The fluid of the circumferential surface movement of piece, using caused by the spontaneous Coanda effect of the shape of blade, the hydraulic pressure that high velocity stream is brought Difference, generate promote stream.

The particular content of the present invention is as described below.

(1) a kind of horizontal axis rotor, on lift-type blade, by positive the bloating for big arcuation in chord line in stream direction Face, and the back side for releasing direction is less than positive bulging, passes through from trailing edge potion along positive chord line when horizontal axis rotor wing rotation Back side direction, using Coanda effect obtain high velocity stream become propulsive force.

(2) on the basis of the horizontal axis rotor of (1), the lift-type blade, the wing root portion back side for releasing direction, Be linear and parallel rotating direction in chord line, from wing root portion to maximum chord length portion, release the back side in direction from trailing edge potion to Leading edge potion is gradually substantially tilted to positive direction.

(3) on the basis of the horizontal axis rotor of (1) or (2), the lift-type blade from the side, from wing root portion to the wing End, thickness are gradually reduced, and front is from wing root portion to tip extension, rearwardly direction gradually tilts.

(4) a kind of boat having horizontal axis rotor, by the horizontal axis rotor described in above-mentioned (1)~(3), with the inclination of blade The front end in portion towards fore direction mode, mounted on being configured in boat, rotor babinet rotor shaft.

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

According to the invention described in above-mentioned (1), since the back side is flat, bloats to front wing section shape, so accompanying rotation, place In the high velocity stream for generating Coanda effect acquisition on the front of rotor axis direction, and rearwardly direction passes through from the rear of chord line, Thrust is generated as reaction, to rotor axis direction.

Accompanying rotation is converged along positive fluid to rake direction, using being produced on the positive bulging face on rake Raw Coanda effect becomes higher speed, and rearwardly direction passes through, and as reaction, becomes the thrust to rotor axis direction.

According to the invention described in above-mentioned (2), the back side in the wing root portion of lift-type blade, due to chord line be it is linear and Gradually increase from the wing root portion of zero angle of attack to maximum chord length portion, the angle of attack, so push fluid as thrust open in wing tip part, but It is to be more than the Fluid Volume pushed open therefore the power of needs is small along the amount of the swiftly flowing fluid in front.

According to the invention described in above-mentioned (3), from the side due to lift-type blade, from wing root portion to tip extension, thickness by It is decrescence small, and front is from wing root portion to tip extension, rearwardly direction gradually tilts, so resistance when rotation is smaller, along front Fluid be easy the movement of guide vane extreme direction, converge to the fluid of the rake of wing tip, become high speed using Coanda effect, from rear Rearwardly direction is flowed, and as reaction, generates propulsive force.

According to the invention described in above-mentioned (4), since in the rotor shaft for the rotor babinet being arranged in boat, installation is vaned The front end of rake towards fore direction rotor, therefore when rotor wing rotation, blade by it is on stream interface that is, front, in string Direction utilizes the high velocity stream of Coanda effect movement, and the back side for releasing direction is led to from rear, as reaction, becomes propulsive force.

Description of the drawings

Fig. 1 is the front view of an embodiment of horizontal axis rotor of the present invention.

Fig. 2 is 1 blade in Fig. 1, side view from rear side.

Fig. 3 is the vertical view of 1 blade in Fig. 1.

Fig. 4 is the E-E line section plan views in Fig. 1.

Fig. 5 is the line D-D section plan view in Fig. 1.

Fig. 6 is the line C-C section plan view in Fig. 1.

Fig. 7 is the line B-B section plan view in Fig. 1.

Fig. 8 is the line A-A section plan view in Fig. 1.

Fig. 9 is the side view for the boat for having horizontal axis rotor of the present invention.

Figure 10 is the side view for the part section for indicating the horizontal axis rotor in Fig. 9.

Specific implementation mode

Illustrate an embodiment of the invention referring to the drawings.

Fig. 1 is the front view of the upstream side (by stream side) of horizontal axis rotor (hereinafter referred to as rotor) of the present invention, 3D, front The stern for such as facing ship, be then on aircraft bear air-flow by stream interface.

The periphery of the propeller hub 2 of rotor 1 is equipped with multiple (being 5 in figure) lift-type blades (hereinafter referred to as blade) 3,3.

From wing root portion 3A to tip extension, chord length is gradually increased blade 3, and 3B expansions in maximum chord length portion are set as radius of turn 45~50%.

As shown in Fig. 2, the side view of blade 3 from wing root portion 3A to the gradual thickness of tip extension thinning, the front of upstream side 3D, from wing root portion 3A to tip extension, roam all around the would is tilted to (releasing side) gradually downward.

As shown in Fig. 2, the front end of maximum chord length portion 3B is set as rake 3C, the rake 3C to the upstream side (by stream side) With 30~45 degree of angle tilt.

In addition as shown in figure 3, back side 3E with maximum chord length portion 3B as basic point, to vertical direction (X arrows) tilt.

As shown in Fig. 3~Fig. 8, the back side 3E for becoming the downstream side of blade 3 is set as flat surface, the relative rotation sides 3A of wing root portion The angle of attack is gradually appeared to for zero angle of attack, and to tip extension.

As shown in Fig. 4~Fig. 8, become the positive 3D of upstream side, the center portion of string (the rotor shaft side of figure to the upstream side To) bulging.The degree of the bulging, such as near front end can be 15% of chord length or so, it is maximum can be thick to chord length 30%.

Wing root portion 3A in Fig. 4 considers that the thickness of opposite chord length is about 66% on the diagram from the intensity of blade 3, but It can be thicker than above-mentioned.

It is gradually thinning to tip extension, thickness.In the part of maximum chord length portion 3B in the figure 7, thickness is as thin as the pact of chord length 17%, until rake 3C becomes thinner.

When blade 3 rotates, to chord line by the fluid of the larger positive 3D of bulging, because Coanda effect high speed passes through. Faster than the back side 3E by not bloating, fluid speed, faster fluid around velocity ratio, density becomes above-mentioned fluid It dredges, and is reduced around pressure ratio.

The fluid of normal pressure is from the fluid that surrounding converges to pressure reduction, and result Fluid pressure increases, to tip extension side The positive 3D for movement and converging on rake 3C, and being bloated towards the directions rear 3G of string, by the presence of rake 3C, To as reaction, become propulsive force.

In Figure 5, it is detached from the fluid of front 3D to the directions trailing edge potion 3G, is flowed into D arrow directions, but because back side 3E Relative rotation direction is almost without the angle of attack, so the fluid along back side 3E flowings is pushed in the part close to maximum chord length And become thrust.

In figure 6, along the chord line of positive 3D, flow to the fluid in the directions rear 3G, flowed into C arrow directions.By the back side The fluid that 3E is pushed, is pushed out, but its amount cannot be compared with the water along positive 3D to C arrow directions.

In the figure 7, along the fluid of the positive 3D of maximum chord length portion 3B, to B arrow direction flow at high speed.The arrow sides B To the C arrow directions compared to Fig. 6, it is offset to the direction of the axial line S far from rotor 1.This is as above-mentioned reaction, makes leaf The effect that piece 3 is rotated to direction of rotation.

Fig. 8 shows the cross sections of rake 3C.Rake 3C inclines to the front (rotor axis direction) of positive 3D in fig. 8 Tiltedly.Since the front 3D carries substantially bulging as shown in the figure, so accompanying rotation, along string in the positive 3D of rake 3C Direction from rear 3G towards the back side directions 3E, using Coanda effect and high speed by fluid, pass through to A arrow directions, and make For reaction, become propulsive force.

Due to the amount of fluid being converged on the maximum chord length portion 3B, in certain time, it is accompanying rotation, passes through centrifugation The variation of power and Fluid pressure, the fluid that aggregation comes from the wing root portion directions 3A, therefore bring sizable reaction, that is, it carries The rotary speed of high rotor 1, and bring the substantially thrust to 4 direction of rotor shaft.

From described Fig. 4~Fig. 8 it is found that working as the rotor 1 on the pusher in the water of ship in use, due to unlike existing Some propellers like that, with blade 3 release water, and work is pushed open caused by for the power of the resistance of water so not will produce With.

That is, as shown in Fig. 2, since the thickness of the tip extension of blade 3 root 3A of flying wing to wing is thin, so rotational resistance will not be too Greatly.When blade 3 rotates, because wing root portion 3A revolving circumferential velocities are small, so the thickness of leading edge 3F is difficult to become larger Resistance.

The faster wing tip part of revolving circumferential velocity, due to the half of body as fish, leading edge potion 3F and trailing edge potion 3G The gradual thickness increase in centre sharp, to front 3D, so clockwise rotation passes through positive 3D to the opposite stream of leading edge 3F to chord line In maximum caliper portion when, using Coanda effect high speed pass through, resistance will not be become.

In this way, the rotor 1 is not pushed water open with blade 3 downstream, the rotation using blade 3 makes in string The opposite stream generated on direction on positive 3D, as with the high-velocity flow of Coanda effect, and from trailing edge potion 3G rearwardly 3E Direction passes through, and as its reaction, obtains thrust.

As a result, due to not being firmly to release water, so not needing larger power.Due to being utilized because of blade 3 Spontaneous Coanda effect is rotated, as long as so blade 3 rotates, Coanda effect will generate naturally, along the fluid of positive 3D As long as flow velocity it is faster than the fluid along back side 3E, high velocity stream will rearwardly the directions 3E pass through naturally.

Fig. 9 is that the rotor 1 of the present invention is loaded on the pusher waterborne of boat 5, and Figure 10 indicates rotor babinet 7 The side view of part section.It is horizontally mounted on the quarter deck of boat 5 by supporter 6, rotor babinet 7.In rotor babinet 7 It is supported by the rotor shaft 4 of connection prime mover 8 and clutch 9, rotor 1 is configured in the front end of rotor shaft 4.

By clutch 9, the fore-end of rotor shaft 4 connects prime mover 8, so that rotor 1 is rotated using prime mover 8, still If releasing the connection of clutch 9, rotor 1 utilizes Wind-driven rotating.The number of blade 3 is arbitrarily set in 2~6 ranges It is fixed.

The rotating speed of rotor shaft 4 is measured by the speed counter 10 being arranged in rotor babinet 7, and the measured value is inputted automatically Controller 11.

When accessing prime mover 8 and connecting clutch 9, rotor 1 is rotated using prime mover 8.

With the rotation of rotor 1, when air-flow is released using F, F arrow direction of the blade 3 into Fig. 9, boat 5 is promoted Power and advance.

That is, due to the axis direction concentration towards the back side directions 3E, propulsive force becomes larger.

The rotor 1 that rotary speed improves, propulsive force further increases.In this way, by applying fraction of auxiliary power, so that it may To obtain powerful propulsive force.The rotor 1 can also serve as the propeller in water.

Industrial applicibility

By being rotated with low-power, generated on the chord line by stream interface because of blade, Coanda effect can be made to obtain High velocity stream, from rear, rearwardly direction passes through, and obtains propulsive force by its reaction, so can be as small-sized boat etc. Pusher uses.

Reference sign

1 horizontal axis rotor

2 propeller hubs

3 lift-type blades

3A wing roots portion

3B maximum chord lengths portion

3C rakes

The fronts 3D (upstream side)

The back sides 3E (downstream side)

3F leading edge potions

3G trailing edge potions

4 rotor shafts

5 boats

6 supporters

7 rotor babinets

8 prime mover

9 clutches

10 testers

11 automatic controllers

The flow direction of A~F fluids

S shaft center lines

Claims

1. a kind of horizontal axis rotor, which is characterized in that on lift-type blade, by stream direction front chord line be big arcuation Bulging face, and the back side for releasing direction is less than positive bulging, when horizontal axis rotor wing rotation along positive chord line from rear Portion by back side direction, using Coanda effect obtain high velocity stream become propulsive force.

2. horizontal axis rotor according to claim 1, which is characterized in that the lift-type blade, the wing root portion side of releasing To the back side, be linear and parallel rotating direction in chord line, from wing root portion to maximum chord length portion, release the back side in direction from Trailing edge potion is gradually substantially tilted to leading edge potion, to positive direction.

3. horizontal axis rotor according to claim 1 or 2, which is characterized in that the lift-type blade from the side, from wing root Portion to tip extension, thickness is gradually reduced, and front is from wing root portion to tip extension, rearwardly direction gradually tilts.

4. a kind of boat having horizontal axis rotor, which is characterized in that the horizontal axis rotation as described in any one of claims 1 to 3 The wing, in such a way that the front end of the rake of blade is towards fore direction, mounted on the rotor for being configured at rotor babinet in boat On axis.