TW201643071A - Horizontal shaft rotor - Google Patents

Abstract

The purpose of the present invention is to provide a horizontal shaft rotor that is for use in a propulsion machine, that makes it possible to change the position of a blade of the horizontal shaft rotor such that the pitch angle thereof with respect to a rotational direction changes from 0 degrees and a leading edge moves 45 degrees to the front or to the rear, and that, by switching the pitch angle, makes it possible to perform changes of course, as well as to make a ship reverse, by means of propulsive force. A horizontal shaft rotor 1 wherein a support rod 4, which protrudes from a blade root 3C of a lift-type blade 3 that has a leading edge 3A that has a thickness that is 20%-30% of the chord length of the blade, is rotatably fitted into a hub 2 so as to be perpendicular to a rotating shaft center line S and such that a flat surface that runs from the leading edge 3A to a trailing edge 3B is a rear surface. The horizontal shaft rotor rotates the support rod 4 by means of an arbitrary rotation means 7 and can change the position of the lift-type blade 3 such that the pitch angle thereof with respect to the rotational direction changes from 0 degrees and the leading edge 3A of the lift-type blade 3 moves forward/rearward within 45 degrees.

Description

Horizontal axis rotor Field of invention

The present invention relates to a horizontal axis rotor which is a propulsion machine for a ship and which can change the speed without changing the power torque and can easily achieve high performance of advancing or retreating.

Background technique

A propeller that bundles a water flow in the axial direction is disclosed, for example, in Patent Document 1.

Prior technical literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2007-125914

Summary of invention

As described above, the propeller disclosed in Patent Document 1 is formed by bending a tip end portion of a blade in a rear direction to form a circular arc portion, and the blade is fixed to the hub. Among them, the change of the blade inclination angle is not mentioned.

The present invention provides a horizontal-axis rotor which can change the inclination angle of a blade over a wide range and change the speed without changing the propulsive force, and is easy to reach the forward and backward movement of the hull.

The details of the present invention are as follows.

(1) In the horizontal-axis rotor, the support rod of the blade root protruding from the front edge having a thickness of 20% to 30% of the chord length is orthogonal to the rotation axis, and the leading edge to the trailing edge is The flat surface is rotatably mounted on the hub as a rear surface, and the support rod is rotated by any rotation means, so that the position of the lift type blade can be from the inclination angle of the rotation direction to 0 degrees, and the front edge of the lift type blade is respectively turned to the front and rear direction. The 45 degree range is changed to the horizontal axis rotor.

(2) The above-described lift type blade gradually increases the chord length from the wing root to the wing tip as seen from the rear, and forms an inclined portion that inclines the front end toward the rear direction from the maximum chord length portion, and from the flat state in the upright state It is to be noted that the straight line connecting the front end of the inclined portion and the axis of the support rod and the straight line connecting the leading edge and the trailing edge of the lift type blade are orthogonal to the horizontal axis rotor described in the above (1).

(3) The straight line rotor described in the above (1) is a straight line connecting the leading edge and the trailing edge of the lift type blade in the upright direction so that the leading edge can be changed in the range of 4 to 30 degrees in the front direction.

(4) The lift-type blade is formed by any one of the above (1) to (3) in which the blade root to the tip of the blade tip is orthogonal to the rotation axis line S when the inclination angle is 0 degree with respect to the rotation direction. The horizontal axis rotor.

(5) The horizontal-axis rotor according to any one of the above (1) to (4), wherein the direction of the lift-type blade is changed in conjunction with the speed adjustment.

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

The lift type blade described in the above (1) is rotatably mounted orthogonally to the hub, and the rotational force of the rotary means is transmitted by the transmission means, and the leading edge of the lift type blade is directed forward and rearward, respectively. In the range of 45 degrees, the direction of the lift type vane can be changed. Therefore, when the lift type vane is rotated at a fixed position at an inclination angle of 0 degrees with respect to the rotation direction, the ship having the lift type vane is borrowed. The flow of water occurring on the circumferential surface of the lift type blade according to the Coanda effect can be smoothly advanced.

When the leading edge of the lift type blade is deflected toward the rear direction by 45 degrees, when the rotor is rotated, since the water flow is pushed out in the left front direction with respect to the traveling direction, the rear tail of the ship necessarily moves in the backward direction, and the hull is easily retracted.

Further, by adjusting the tilt angle of the lift type vane, even if the rotational speed of the rotor shaft is the same, the propulsive force can be changed.

In the lift type blade described in the above (2), since the chord length is gradually increased from the wing root to the wing tip as seen from the rear, and the inclined portion which is inclined toward the rear direction from the maximum chord length portion, the lift type is used. The rotation of the blade allows a large amount of water in the centrifugal portion to be sent out without scattering by the inclined portion, thereby improving the propulsive force.

Further, in the upright state of the lift type blade, since the straight line connecting the front end of the inclined portion and the axial center of the support rod is orthogonal to the straight line connecting the leading edge and the trailing edge of the lift type blade, the inclined portion is used. The introduced water flow raises the propulsive force at a high speed toward the direction of the axis of the rotating shaft.

In the lift type blade according to the above (3), since the straight line connecting the leading edge and the trailing edge in the upright state inclines the front edge in the range of 4 to 10 degrees in the front direction, the water flow is accompanied by the rotation of the rotor. The trailing edge of the lift type blade is pushed out in the backward direction to become a propulsive force.

Further, when the water flow hits the rear of the lift type blade, since the rotor is rotated in the reverse direction, the rotor can be used for the water wheel.

In the lift type blade described in the above (4), since there is no twist in the rotation direction or the radial direction, the vortex hole phenomenon does not occur during the rotation, and the loss of the rotational force does not occur, so that it can be fully utilized.

Since the lift type blade described in the above (5) is automatically controlled to be redirected in conjunction with the speed adjustment, even if the power torque is the same, the speed can be automatically adjusted by adjusting the tilt angle of the lift type blade.

1‧‧‧ transverse axis rotor

2‧‧·wheels

3A‧‧‧ leading edge

3B‧‧‧ trailing edge

3C‧‧‧Wingen

3D‧‧‧ wingtip

3E‧‧‧Maximum chord length

3F‧‧‧Back

3G‧‧‧ front

3H‧‧‧ tilting section

4‧‧‧Support rod

5‧‧‧Transmission means (worm gear)

6‧‧‧Transmission means (worm)

7‧‧‧Rotary means (servo motor)

Rotating shaft line of S‧‧· hub

T‧‧‧Rotation direction line

U‧‧‧Center line of the blade

V‧‧‧ front line of the inclined section

Fig. 1 is a rear view showing an embodiment of the present invention.

Figure 2 is a plan view of the upward blade of Figure 1.

Fig. 3 is a side elevational view showing the blade of the pitch changing means of Fig. 2.

Fig. 4 is a plan view showing a state in which the leading edge of the blade of Fig. 2 is reversed by 45 degrees in the rear direction.

Fig. 5 is a plan view showing a state in which the leading edge of the blade is changed toward the front direction by 45 degrees in Fig. 2;

Fig. 6 is a side view similar to Fig. 3 showing a second embodiment of the present invention.

Figure 7 is a plan view showing the blade of Figure 6.

Form for implementing the invention

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

Example 1

In Fig. 1, a plurality of support rods 4 projecting from the wing roots 3C of the lift type blades 3 (hereinafter simply referred to as blades) in the direction of the center of the ball are oriented in the direction of the center of the ball, and are rotatably fitted in a ship propulsion (not shown). The circumferential surface of the hub 2 at the rear end of the shaft.

The blade 3 is seen from the back, as shown in Figure 1, from the wing root 3C to the wing The direction of the tip 3D gradually increases the chord length, and the front end becomes a tapered arc shape from the maximum chord length portion 3E.

2 is a plan view showing the upright blade 3 of FIG. 1, with the front side being the front 3G, the left side being the rear 3F, and the rear 3F being formed as a straight line from the leading edge 3A to the trailing edge 3B. Further, the center line U of the leading edge 3A and the trailing edge 3B of the blade 3 makes the inclination angle of the blade 3 with respect to the rotational direction T 0 degrees.

The maximum wing thickness of the leading edge 3A portion of the blade 3 is formed to a thickness ranging from 20% to 30% of the chord length, and is gradually thinner toward the trailing edge 3B. The axial center S of the hub 2 is orthogonal, and the blade 3 in a state in which the support rod 4 is fitted is formed into a fish shape in plan view.

Further, the rear face 3F (the left side view in Fig. 2) of the blade 3 is flat from the leading edge 3A to the trailing edge 3B, but the front face 3G (the right side view of Fig. 2) is drawn in a gentle arc shape, so the front edge 3A is drawn. The length to the trailing edge 3B is formed such that the front 3G is larger than the rear 3F.

For this reason, in the water flow passing through the leading edge 3A to the trailing edge 3B of the blade 3 at the time of rotation, the water flow velocity passing along the front 3G is larger than the water flow velocity passing along the rear 3F, by the Coanda effect The flow of water in the direction of arrow A in Figure 2 is produced.

Therefore, as shown in FIG. 2, even if the blade 3 having an inclination angle of 0 degrees with respect to the rotation direction is rotated, the water flow in the direction of the arrow A along the front 3G is generated by the Coanda effect, and therefore the ship having the blade 3 is provided. You can move forward slowly.

Further, when the inclination angle becomes large, even if the torque of the power is the same speed, the speed changes. The control of the tilt angle is formed to automatically control the adjustment of the speed.

Further, when the speed is adjusted, it is set to automatically interlock the inclination angle of the adjustment blade 3.

3 is a side elevational view of FIG. 2, with the front face 3G and the rear face 3F of the blade 3 being approximately orthogonal without twisting about the axis of rotation S of the hub 2. The support rod 4 projecting downward from the end of the blade root 3C of the blade 3 is fitted to the circumferential surface of the hub 2 in the direction of the center of the ball, and is configured to be freely rotatable.

For example, a worm gear is fixed in the support rod 4 as a transmission means 5, and a worm engaged therewith is provided as a transmission means 6.

As the rotation means 7 of the transmission means 6, for example, a servo motor is used. The servo motor is adjusted by computer control or manual control (not shown).

As other means of rotation, fluid pressure cylinders or other known means are used. The adjustment of the speed is set to automatically control by interlocking by adjusting the inclination angle of the blade 3.

In Fig. 3, by the rotation of the transmission means 5, 6 according to the rotation means 7, the blade 3, as shown in Fig. 4, can change the leading edge 3A toward the rear 3F (lower side of Fig. 4) direction to 45 degrees. The scope. Further, on the contrary, as shown in FIG. 5, the leading edge 3A can be made to face the range of 45 degrees toward the front surface 3G (upper side in FIG. 5).

In the ship provided with the blade 3, since the water flow in Fig. 4 is pushed out in the direction of the arrow B which is 45 degrees toward the right oblique direction, the hull is retracted by the propulsion force, and the rudder is used, or even if there is no vigorous revolving, the vehicle is retracted. After that, the route such as the forward direction can be changed.

Further, when the blade 3 is rotated in the direction of rotation to the state shown in Fig. 5, for the ship, the water flow is pushed in the direction of the arrow C which is 45 degrees to the right obliquely rearward. With this propulsion, it can be advanced. In this case, although it is slightly advanced in FIG. 2, in the state of FIG. 5, even if the power is the same, the flow of water is increased, and high-speed advancement can be achieved.

Example 2

Fig. 6 is a side view corresponding to Fig. 3 of the second embodiment of the horizontal axis rotor. The same members are denoted by the same reference numerals as in the previous examples, and the description is omitted.

The blade 3 in the second embodiment is formed by forming the inclined portion 3H which inclines the front end in the downward flow direction from the maximum chord length portion 3E.

The inclination angle of the blade 3 is 30 degrees to 45 degrees. As shown in Fig. 7, in the plan view of the upright blade 3, the straight line V connecting the wing tip 3D of the inclined portion 3H and the axis of the support rod 4 is set to A straight line U connecting the leading edge 3A and the trailing edge 3B of the blade 3 is orthogonal. In Fig. 7, with respect to the rotational axis S of the hub 2, the straight line V is inclined toward the leading edge 3A by about 10 degrees.

Therefore, with the rotation of the blade 3, the water flow is moved toward the blade tip direction according to the centrifugal force of the rotation of the blade 3 in Fig. 7, and is suppressed by the inclined portion 3H, and is ejected in the direction of the arrow C in Fig. 7, and in Fig. 6, The arrow C is retracted in the direction of the arrow C of the rotation axis line S of the hub 2, and the rotation effect of the blade 3 is improved by the reaction force.

Although the blade for a marine propulsion machine has been described above, the present invention can also be applied to a water turbine of a hydroelectric generator.

In other words, in Figs. 6 and 7, the rear face 3F is made to be the flow front face.

The inclination angle of the blade 3 can be changed in the range of 4 to 30 degrees with respect to the rotation direction. Since the inclination angle is made small at a low flow rate and the inclination angle is large at a high flow rate, the torque can be increased, so that the rotor can be applied to the rotation speed of the water passage to achieve efficient power generation.

Industrial availability

According to the present invention, since the inclination angle of the blade for the rotation direction is set to 0 degree in advance, and the front edge portion can be changed in the range of 45 degrees in the front-rear direction, respectively, the rotation speed can be changed without changing the rotation shaft speed. The propulsive force can be retracted without changing the direction of rotation of the rotor shaft, and a suitable propeller can be obtained.

2‧‧·wheels

3‧‧‧ leaves

3A‧‧‧ leading edge

3B‧‧‧ trailing edge

3F‧‧‧Back

3G‧‧‧ front

4‧‧‧Support rod

5‧‧‧Transmission means (worm gear)

6‧‧‧Transmission means (worm)

7‧‧‧Rotary means (servo motor)

Claims (5)

A horizontal-axis rotor characterized in that, in a horizontal-axis rotor, a support rod and a rotation axis line of a blade root protruding from a maximum thickness of a front edge portion to a chord length of 20% to 30% are positive Crossing, and the flat surface of the leading edge to the trailing edge is used as a rear and can be rotatably mounted on the hub, and the support rod is rotated by any rotation means, so that the position of the lift type blade can be inclined from the direction of rotation by 0 degrees. The leading edge of the lift type blade is redirected in the range of 45 degrees in the front-rear direction. The transverse-axis rotor of claim 1, wherein the lift-type blade gradually increases the chord length from the wing root to the wing tip as viewed from the rear, and forms an inclined portion that inclines the front end toward the rear direction from the maximum chord length portion, In the erect state, the straight line connecting the front end of the inclined portion and the axial center of the support rod is orthogonal to the straight line connecting the leading edge and the trailing edge of the lift type blade. The horizontal-axis rotor of claim 1, wherein the straight line connecting the leading edge and the trailing edge of the lift-type blade in the upright state is rotatable in a range of 4 to 30 degrees toward the front direction with respect to the rotational direction. The horizontal-axis rotor according to any one of the items 1 to 3, wherein the lift-type blade has a tilt angle of 0 degrees to the rotation direction, and the rotation axis line S is from the root of the wing to the tip of the wing tip. Orthogonal. The horizontal-axis rotor according to any one of claims 1 to 4, wherein the direction of the lift-type blade is automatically controlled in conjunction with the speed adjustment.