A propeller system suitable for the kinetic interaction with a fluid flowing in one direction through a channel and a channel for one-directional fluid flow provided with such a propeller system

Abstract

A propeller system suitable for the kinematic interaction with a fluid flowing in one direction in a channel includes a support configured to be integrated at a fixed position within the channel, and a kinematic interaction system provided on the support. The kinematic interaction system extends into the internal region of the channel when the support is integrated at the fixed position. The kinematic interaction system includes at least a pair of rotors or a single rotor. Each rotor performs a combined rotation.

Description

【Technical Field】 【0001】 The present invention relates to a propeller system suitable for the kinetic interaction with a fluid flowing in one direction through a channel. Further, the present invention relates to a channel for one-way fluid flow, including such a propeller system. 【Background Art】 【0002】 The propeller system according to the present invention is suitable for transferring kinetic energy from the propeller system to a one-way fluid flow in the channel. The propeller system imparts thrust to the fluid flow by accelerating the fluid flow. Such applications are useful for marine transportation means, for example, ship propellers. 【0003】 Furthermore, the propeller system is also suitable for the transfer of kinetic energy in the reverse direction. The kinetic energy of the fluid flow guided in the channel drives the propeller system, and the propeller system can be used to receive the kinetic energy of the fluid flow and convert it into, for example, electromagnetic energy, hydraulic energy, pneumatic energy or mechanical energy. Such applications are useful for, for example, turbine systems for generating electromagnetic energy. 【0004】 The following description mainly focuses on the first application for imparting thrust to the fluid flow. However, it should be noted that the same advantages can also be applied to the reverse application of obtaining kinetic energy from the fluid flow by the propeller system. 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0005】 Propeller systems are well known for ship propulsion and are generally based on the design of ship propellers having a plurality of propeller blades (blades) that rotate underwater. High propulsion energy can be obtained with such ship propellers, but energy loss occurs due to the pure rotational motion of the blades, reducing the effectiveness and thus the efficiency of the kinetic interaction between the ship propeller and the water. 【0006】 In view of the prior art, the present invention aims to provide a design of a propeller system that fundamentally differs from the prior art and kinematically interacts with the flow of a fluid. This propeller system has excellent effects compared to the prior art propeller systems, and thus also has excellent efficiency in kinematic interaction. 【Means for Solving the Problem】 【0007】 To achieve the above object, a first aspect of the present invention provides the following. A propeller system suitable for kinematic interaction with a fluid flowing in one direction through a channel, wherein the propeller system comprises a support configured to be integrated at a fixed position within the channel, and a kinematic interaction system provided on the support, wherein when the support is integrated at the fixed position, the kinematic interaction system extends into the inner region of the channel, and the kinematic interaction system includes either (i) or (ii) below, (i) at least one pair of rotating blades, preferably at least two pairs of rotating blades, wherein each pair of rotating blades is provided as follows, - The rotating blades each have a planar shape including two opposing working surfaces designed for kinematic interaction with the fluid flow, - The rotating blades each have a blade axis that enables the rotating blade to rotate and a blade gear mechanism that is drivably engaged with the blade axis, - The two rotating blades are spaced apart from each other and are rotatably attached to one side of a common wheel by their respective blade axes. The common wheel has a wheel axis, and the common wheel rotates about the wheel axis. The two blade axes are respectively attached to the common wheel at two positions eccentric with respect to the wheel axis, - The common wheel is rotatably connected to the support by the wheel axis and is drivably connected to a wheel gear mechanism, - The two vane gear mechanisms are driven so that the rotation of the common wheel simultaneously rotates the two vane shafts. - The motion interaction system is configured such that the two vane shafts and the wheel shaft are in the same or parallel directions to each other. - During the operation of the propeller system, the rotation of the common wheel combined with the simultaneous rotation of each rotating vane about the vane shaft results in a combined rotation executed by each rotating vane. Each rotating vane follows a periodic trajectory for each rotation of the common wheel, and the two rotating vanes do not contact each other during simultaneous rotation, or (ii) A single rotating vane, provided as follows: - The rotating vane has a planar shape including two opposing working surfaces designed for motion interaction with the fluid flow. - The rotating vane has a vane shaft that enables the rotation of the rotating vane and a vane gear mechanism that is drivably engaged with the vane shaft. - The rotating vane is rotatably attached to one side of the common wheel by the vane shaft. The common wheel has a wheel shaft, and the common wheel rotates about the wheel shaft. The vane shaft is attached to the common wheel at a position eccentric with respect to the wheel shaft. - The common wheel is rotatably connected to the support by the wheel shaft and is drivably connected to the wheel gear mechanism. - The rotation of the common wheel drives the vane gear mechanism to rotate the vane shaft. - The motion interaction system is configured such that the vane shaft and the wheel shaft are in the same or parallel directions to each other. - During the operation of the propeller system, the rotation of the common wheel combined with the simultaneous rotation of the rotating vane about the vane shaft results in a combined rotation executed by the rotating vane. The rotating vane follows a periodic trajectory for each rotation of the common wheel. A propeller system characterized by this. 【0008】 With the propeller system having the kinematic interaction system according to option (i) or (ii) above, the rotor blades can impart thrust to a unidirectional fluid flow at the thrust phase of their periodic orbits. The working surface of the rotor blades assumes an active orientation when moving in the direction along the unidirectional fluid flow, while assuming an idle orientation when moving in the direction opposite to the unidirectional fluid flow at the complementary phase of the periodic orbit. Therefore, the propeller system can transfer kinetic energy to the fluid flow in the channel with high efficiency. 【0009】 Furthermore, when the propeller system has the kinematic system according to option (ii) above, a pair of rotor blades provided for each common wheel enables the two rotor blades to alternately impart thrust to the fluid flow during one rotation of the common wheel. As a result, the thrust of the propeller system is maintained relatively constant for each rotation of the common wheel. This further improves the efficiency of the propeller system. 【0010】 In the propeller system according to the present invention, the periodic orbit followed by the rotor blades preferably coincides with the shape of a cardioidal curve, particularly based on the periodic orbit of the lateral ends of the rotor blades. 【0011】 Such a periodic orbit has been found to be very suitable for improving the efficiency and effectiveness of the propeller system, particularly with regard to improving the kinematic interaction with the fluid flow. 【0012】 For the sake of clarity, it is noted that as a result of the combined rotation of the rotor blades, all parts of the rotor blades that do not coincide with the blade axis follow a periodic orbit having the shape of a cardioidal curve. Furthermore, such a periodic locus appears most prominently when following the lateral ends of the rotor blades. The periodic locus of the lateral ends limits the area in which the rotor blades move during operation. 【0013】 Even more preferably, in the propeller system according to the present invention, the periodic orbits of the two rotor blades of a pair of rotor blades are similar or identical. 【0014】 This ensures that the kinematic interaction between the two rotor blades of the pair of rotor blades and the fluid flow is similar or identical during operation. This contributes to the effectiveness of the propeller system. 【0015】 In a preferred embodiment of the propeller system according to the present invention, the blade gear mechanism of each rotor blade has a gear ratio of 1 / 2, and when the common wheel makes one revolution, the rotor blade rotates half a turn about the blade axis. 【0016】 With such a gear ratio, when the common wheel makes the next revolution, the orientation of the rotor blade rotates 180 degrees. This contributes to improving the efficiency of the propeller system. The opposing working surfaces are both designed for the kinematic interaction with the fluid flow and thus have similar shapes. Therefore, the effective orientation of the rotor blade is repeated for each rotation, but different sides (i.e., the working surfaces of the blade) will face the fluid flow. In this way, the rotor blades will be in the same orientation even after consecutive complete revolutions of the common wheel. 【0017】 In a preferred embodiment of the propeller system according to the present invention, the blade axes of the two rotor blades of each pair of rotor blades are attached to the common wheel at positions preferably facing each other radially about the wheel axis. 【0018】 By arranging the rotor blades with such respective blade axes, consecutive rotor blades will perform kinematic interactions at equal time intervals, and as a result, a constant thrust will be obtained for each revolution of the common wheel. 【0019】 In the propeller system according to the present invention, during operation of the propeller system, the two rotor blades of the pair of rotor blades preferably perform the combined rotations simultaneously with a predetermined phase difference, preferably a phase difference of 160 degrees to 200 degrees, most preferably a phase difference of 180 degrees. 【0020】 Due to the phase difference between the two combined rotations, the orientations of the rotor blades are complementary to each other and occur continuously at equal intervals. 【0021】 In the propeller system according to the present invention, during one rotation of the common wheel, the rotor blades are in the direction of an idle state (inactive or drag) for minimum motion interaction during the first half-rotation of one rotation of the common wheel, and the rotor blades are preferably in the direction of an active state (thrust) for maximum motion interaction during the second half-rotation of one rotation of the common wheel. 【0022】 During the first half-rotation of rotation, in the direction of the idle state of the rotor blades, the working surface of the rotor blades is oriented substantially parallel to the unidirectional fluid flow. During the second half-rotation of rotation, in the direction of the active state of the rotor blades, the working surface of the rotor blades is oriented substantially perpendicular to the unidirectional fluid flow. 【0023】 Such a configuration is particularly effective when the propeller system is fixed in the channel such that the axis of the rotor blade moves against the direction of the fluid flow during the first half-rotation of rotation and the axis of the rotor blade moves along the direction of the fluid flow during the second half-rotation of rotation. 【0024】 In a more preferred embodiment of the propeller system according to the present invention, during one complete rotation of the common wheel, the rotational speed of the rotor blades gradually increases from the minimum rotational speed to the maximum rotational speed and then gradually decreases from the maximum rotational speed to the minimum rotational speed. Preferably, the ratio of the maximum rotational speed to the minimum rotational speed is about 2:1. 【0025】 In the propeller system according to the present invention, it is particularly preferred that the maximum rotational speed is achieved during the first half-rotation of one complete rotation of the common wheel in which the direction of the idle state of the rotor blades is assumed, and the minimum rotational speed is achieved during the second half-rotation of one complete rotation of the common wheel in which the direction of the active state of the rotor blades is assumed. 【0026】 In a propeller system, the maximum dynamic interaction is achieved when the orientation of the active state of the rotor blades (i.e., the orientation substantially orthogonal to the one-way fluid flow) is taken. When this orientation is established at a lower rotational phase of the rotational speed, a longer effective time for the dynamic interaction with the fluid flow is ensured. As a result, the effect of the dynamic interaction of the propeller system is improved. 【0027】 In this phase of thrust generation, the rotor blades move by an axial translational motion aligned with the one-way fluid flow, and the rotational motion of the rotor blades is minimized when the thrust is applied. 【0028】 Particularly preferably, in the propeller system according to the present invention, the blade gear mechanism of the rotor blades includes an elliptical gear or an elliptical gear that cooperates with a circular gear. Preferably, the circular gear is a circular gear that rotates eccentrically. 【0029】 With such a blade gear mechanism, the rotational speed of the rotor blades varies stepwise between the maximum rotational speed and the minimum rotational speed. 【0030】 As an alternative, the stepwise variation between the maximum rotational speed and the minimum rotational speed can also be realized by other means. For example, it can be achieved by using a microprocessor-controlled stepping motor programmed to execute such a varying rotational speed. 【0031】 Particularly preferably, in the propeller system according to the present invention, the blade gear mechanism of the rotor blades is attached to respective common wheels, and the blade gear mechanism is arranged to include a connecting gear that meshes with a non-rotating gear fixed to a support at a position concentric with the wheel axis. 【0032】 Such a combination of interacting gears is very suitable for performing the combined rotation of the rotor blades while being driven by the rotation of the common wheel. 【0033】 In the propeller system according to the present invention, more preferably, the rotary wing has a height and a width, the wing axis extends parallel to the height direction of the rotary wing, and preferably, the height of the rotary wing is greater than the width of the rotary wing. 【0034】 Such dimensions of the rotary wing are very suitable for performing a specific combined rotation while realizing an effective and efficient movement interaction with the fluid flow. 【0035】 It is particularly desirable that the height and width of the rotary wing are substantially constant over the entire rotary wing. As an alternative, the width of the rotary wing may be gradually narrowed towards the middle height compared to the widths at the upper and lower ends of the rotary wing. 【0036】 Preferably, in the propeller system according to the present invention, the opposing working surfaces of the rotary wing are similar or identical and are substantially formed as a plane having preferably curved lateral ends when viewed in a cross-section perpendicular to the height direction of the rotary wing. 【0037】 In a particularly preferred propeller system according to the present invention, the movement interaction system comprises a first pair of rotary wings and a second pair of rotary wings, The first pair of rotary wings is rotatably connected to a first common wheel, and the second pair of rotary wings is rotatably connected to a second common wheel, The first common wheel and the second common wheel are rotatably connected to a support so as to be arranged adjacent to each other on the same plane, The first common wheel and the second common wheel are respectively drivably connected to a first wheel gear mechanism and a second wheel gear mechanism, Preferably, the first common wheel and the second common wheel rotate in opposite directions to each other during operation. 【0038】 The rotation in opposite directions can be conveniently achieved by providing toothed gears that directly mesh with each other on the outer peripheries of the first common wheel and the second common wheel, respectively. 【0039】 This preferred dual structure of two pairs of rotating blades offers the potential to enhance the kinetic interaction with a unidirectional fluid flow. This is because the first pair of rotating blades and the second pair of rotating blades contribute synergistically by combining their respective thrusts to substantially impart thrust to the main part of the fluid flow (i.e., the central part of the fluid flow). 【0040】 The enhanced kinetic interaction due to the dual structure having two pairs of rotating blades described above is particularly effective when the rotating blades are configured to assume an idle state (non-operating or drag) orientation for minimum kinetic interaction during the first half-rotation and an active state (thrust) orientation for maximum kinetic interaction during the second half-rotation during each rotation of each common wheel. At this time, the rotating blades of both pairs of rotating blades assume the active state orientation at a relatively short distance from each other and the idle state orientation at a relatively long distance from each other. 【0041】 In the propeller system according to the present invention, the first pair of rotating blades and the second pair of rotating blades rotate in opposite directions and are mirror-symmetric, and it is more preferable that the phase of rotation of the rotating blades of the first common wheel and the phase of rotation of the rotating blades of the second common wheel have a phase difference of 60 to 120 degrees, preferably 80 to 100 degrees, more preferably 90 degrees. 【0042】 Thus, the four consecutive active state orientations of the two pairs of rotating blades have a smaller phase difference shift than that achieved by one pair of rotating blades. This further contributes to making the thrust of the propeller system more constant. 【0043】 In the propeller system according to the present invention, it is particularly desirable that the periodic orbits of the first pair of rotating blades partially overlap the periodic orbits of the second pair of rotating blades, especially with respect to the periodic orbits of the lateral ends of each rotating blade. 【0044】 This further contributes to the achievement of the synergistic thrust generated by the combination of the two pairs of rotating blades. 【0045】 When the propeller system according to the present invention has the motion interaction system according to option (ii), it is particularly preferable that the propeller system includes a first motion interaction system according to option (ii) and a second motion interaction system according to option (ii). The first motion interaction system has a single rotor blade rotatably connected to a first common wheel, and the second motion interaction system has a single rotor blade rotatably connected to a second common wheel. The first common wheel and the second common wheel are rotatably connected to a support so as to be arranged adjacent to each other on the same plane. The first common wheel and the second common wheel are respectively drivably connected to a first wheel gear mechanism and a second wheel gear mechanism. Preferably, the first common wheel and the second common wheel rotate in opposite directions to each other during operation. 【0046】 (ii) In the preferred embodiment of the propeller system having the motion interaction system according to option (ii), the single rotor blade of the first motion interaction system and the single rotor blade of the second motion interaction system rotate in opposite directions and are mirror-symmetrical. It is particularly preferable that the phases of rotation of the first common wheel and the second common wheel differ by a predetermined phase difference, preferably a phase difference of 160 degrees to 200 degrees, and most preferably a phase difference of 180 degrees. 【0047】 Furthermore, in the preferred embodiment of the propeller system having the motion interaction system according to option (ii), the periodic orbit of the single rotor blade of the first motion interaction system preferably overlaps with the periodic orbit of the single rotor blade of the second motion interaction system, particularly with respect to the periodic orbits of the lateral ends of each rotor blade. 【0048】 In a second aspect, the present invention relates to a channel for guiding a unidirectional fluid flow. The channel comprises side walls, an inlet side and an outlet side, and guides the fluid flow in one direction from the inlet side to the outlet side. The channel comprises a propeller system according to the first aspect. The support of the propeller system is fixedly integrated within the channel, and the motion interaction system of the propeller system has at least one common wheel. The common wheel is provided as follows. - During one rotation of the common wheel, the rotor blades are in an idle state (inactive or resistant) orientation for minimal motion interaction during the first half rotation of one rotation of the common wheel, and the rotor blades are in an active state (thrust) orientation for maximum motion interaction during the second half rotation of one rotation of the common wheel. - The common wheel rotates against the unidirectional fluid flow within the channel during the first half rotation of one rotation, and the common wheel rotates with the unidirectional fluid flow within the channel during the second half rotation of one rotation. The first half rotation of one rotation is performed at a position separated from the closest side wall of the channel by a short distance, and the second half rotation of one rotation is performed at a position separated from the closest side wall of the channel by a long distance. 【0049】 In such a channel, the motion interaction with the unidirectional fluid flow mainly occurs during the second half rotation of the rotation, and it is hydrodynamically advantageous that the second half rotation is performed at a position away from the closest side wall. On the other hand, it is also hydrodynamically preferable that the first half rotation, which takes the idle state orientation, is performed at a position near the closest side wall of the channel. 【0050】 The advantage regarding the above distance becomes even more prominent when the propeller system has a dual structure with two adjacent common wheels as described above. 【0051】 In a particularly preferred embodiment of the channel according to the invention, the propeller system is fixedly integrated into the longitudinal section of the channel through which the fluid flow passes, the longitudinal section having a width between the opposing side walls of the channel, the width being greater than the width required to execute the respective periodic trajectories during operation without the rotor blades contacting the opposing side walls, and having a size not exceeding 20%, preferably not exceeding 10%. 【0052】 Such dimensions of the channel ensure the most effective and efficient movement interaction between the unidirectional fluid flow passing through the channel and the propeller system. 【0053】 Regarding propeller systems suitable for various purposes, there are several specific variants that are very effective. 【0054】 When the propeller system is applied to impart thrust to a fluid flow, such as in a marine propulsion engine, it has been confirmed that it is particularly effective to arrange the propeller system vertically within the ship. In this context, the vertical arrangement of the propeller system is achieved by the axis of each rotor blade facing parallel or nearly parallel to the vertical axis of the ship on which the propeller system is fixedly installed. 【0055】 Furthermore, when the propeller system is applied to recover kinetic energy from a fluid flow, it has been found that it is preferable to fixedly arrange the propeller system horizontally with respect to the environment. The horizontal arrangement is achieved by the axis of each rotor blade facing parallel or nearly parallel to the horizontal plane of the environment in which the propeller system is installed. 【0056】 The present invention will be further clarified by the accompanying drawings showing preferred embodiments of the present invention. 【Brief Description of the Drawings】 【0057】 【Figure 1】 FIG. 1 shows a dual-structured propeller system according to the present invention. 【Figure 2】Figure 2 shows a single rotor blade. 【Figure 3】 Figure 3 shows a cross-section of the channel with the propeller system according to FIG. 1. 【Figure 4】 Figure 4 is a top view showing a cross-section of the propeller system shown in FIG. 3. 【Figure 5】 Figure 5 is a bottom view of the common wheel of the propeller system shown in FIG. 4. 【Figure 6】 Figure 6 is a top view of a pair of rotor blades according to FIG. 4 at the next stage of rotation of the common wheel. 【Figure 7】 Figure 7 shows the thrust imparted to the unidirectional fluid flow by the propeller system according to FIG. 1 during operation of the propeller system over a certain period of time. 【DETAILED DESCRIPTION OF THE INVENTION】 【0058】 Figure 1 shows a dual-structured propeller system 1. The propeller system 1 includes a lower support 3a and an upper support 3b. These supports are flat structures configured to be incorporated into the channel at a fixed position. Above the upper support 3b, a motion interaction system 5 is connected by two upper wheel shafts 7, 7'. Two upper common wheels (not shown) are rotatably provided on the two upper wheel shafts 7, 7'. In the lower support 3a, symmetric to the upper support 3b with respect to a mirror plane, the motion interaction system 5 is connected to lower common wheels 9, 9'. The lower common wheels 9, 9' are rotatable about a lower wheel shaft (not shown, located on the straight line of the upper wheel shafts 7, 7'). 【0059】 To each of the common wheels 9, 9', a pair of rotor blades 11, 11' (only one is visible) are rotatably attached by respective blade shafts 12, 12'. The pair of rotor blades 11 connected to the common wheel 9 is an embodiment of a motion interaction system that conforms to option (i) as defined above for the present invention. 【0060】 In the embodiment shown in FIG. 1, when only one rotor blade 11 (not two rotor blades as shown) is provided on the common wheel 9, such an embodiment conforms to a motion interaction system having the option (ii) defined above for the present invention. 【0061】 FIG. 2 shows one rotor blade 11 separated from the propeller system shown in FIG. 1. The rotor blade 11 has a constant height H and a constant width W. At the upper and lower portions of the rotor blade 11, blade shafts 12 for rotatably connecting to the common wheel 9 shown in FIG. 1 are provided. 【0062】 The rotor blade 11 has two opposing working surfaces 14, 14' that interact kinematically with the fluid flow. These surfaces 14, 14' are similar or identical surfaces, are substantially formed as planes, and have curved lateral ends 16, 16' when viewed in a cross-section perpendicular to the height direction H of the rotor blade 11. 【0063】 FIG. 3 shows a longitudinal cross-section of a channel 30 for guiding a fluid flow in one direction. The channel 30 has side walls 32, an inlet side 33, and an outlet side 34. The inlet side 33 and the outlet side 34 guide the flow of the fluid F in one direction from the inlet side to the outlet side. The channel has a longitudinal section 35. The longitudinal section 35 has a cross-sectional portion similar to the propeller system 1 shown in FIG. 1 that is fixedly connected to the channel 1 by a support 3a. 【0064】 FIG. 4 is a top view of a cross-sectional portion of the propeller system as shown in FIG. 3, and the lower common wheels 9', 9 and the lower support 3a are shown as in FIG. 1. In FIG. 4, further features corresponding to those described above with respect to FIGS. 1 to 3 are shown using the same reference numerals. The longitudinal section 35 of the channel includes two opposing side walls 40, 40'. 【0065】 FIG. 5 is a bottom view of the common wheel 9 of the propeller system shown in FIG. 4. A toothed gear 58 is provided on the entire circumference thereof so as to mesh with an appropriate wheel gear (not shown) for rotating the common wheel 9. 【0066】 A wheel shaft 7 is provided at the center of the wheel 9. The wheel shaft 7 is rotatably connected to a support 3a (only a part of the support is shown). A non-rotating gear 60 (partially shown by a dotted line and partially visible) is fixed to the support 3a at a position concentric with the wheel shaft 7. 【0067】 The non-rotating gear 60 is arranged to mesh between two wing gear mechanisms 62. The wing gear mechanism 62 includes gears 54, 52, 50 attached to the wheel 9 and arranged at different positions. The non-rotating gear 60 meshes directly with the gear 54 of the wing gear mechanism 62. The gear 54 is a circular gear that rotates about a concentric gear shaft 56 rotatably connected to the wheel 9. Further, an eccentric circular gear 52 is disposed on the gear 54. The eccentric circular gear 52 is fixed to the gear 54 at a position eccentric with respect to the gear shaft 56. The eccentric circular gear 52 meshes with an elliptical gear or an elliptical gear 50. The gear 50 has a center point on the wing shaft 12. A rotating wing is connected to the wing shaft 12 (as shown in FIG. 4). 【0068】 In the illustrated configuration, when the wheel 9 rotates, the gear 54 moves while rotating around the non-rotating gear 60. As a result, the gear 54 drives the gears 52, 50 and rotates the wing shaft 12. In the wing gear mechanism 62 including the gears 54, 52, 50, in this way, the gear 54 functions as a connecting gear connected to the non-rotating gear 60 in order to transmit the rotational motion of the wheel 9 to the wing shaft 12. 【0069】 Figure 6 shows seven consecutive figures. Each figure shows a top view of a pair of rotor blades 11A, 11B corresponding to the pair of right rotor blades 11 shown in Figure 4, in subsequent phases of the rotation of the common wheel 9 when the propeller system is operating. In the consecutive figures shown, at each phase of rotation, the common wheel 9 rotates counterclockwise by 30 degrees about its central axis (not shown but in accordance with Figure 4). The rotation of the common wheel is driven by a wheel gear mechanism (not shown). The phase of rotation of the common wheel is indicated by a three-digit number (i.e., 000 - 180). 【0070】 Due to the rotation of the common wheel 9 about its central axis, two respective blade gear mechanisms of the blades 11A, 11B are driven via circular gears 52A, 52B that mesh with elliptical gears 50A, 50B respectively, causing the blade shafts 12A, 12B to rotate, and as a result, the rotor blades 11A, 11B rotate. Tooth gears are provided on the outer circumferences of the elliptical gears and the circular gears such that the gear ratio of the circular gear to the elliptical gear is 1:2. 【0071】 To make Figure 6 easier to view, only the most relevant parts 50, 52 of the blade gear mechanism of each rotor blade are shown, but the blade gear mechanism includes additional parts corresponding to the components shown in Figure 5. 【0072】 Starting from the upper left figure (000 degrees), the direction of the rotor blade 11B is perpendicular to the one-way fluid flow F shown, while the direction of the rotor blade 11A is aligned with the one-way fluid flow F shown. In this embodiment, the direction of this blade 11A is the idle state direction, which means that the kinetic interaction with the fluid flow F shows a minimum value. At the same time, in this embodiment, the direction of the blade 11B is the active state direction, which means that the kinetic interaction with the fluid flow F shows a maximum value. 【0073】 In the subsequent phases (from 030 to 150 degrees), the orientations and positions of the blades 11A and 11B change. At 180 degrees (the lower left figure), the orientations of the two blades are swapped such that the blade 11A is in the active orientation and the blade 11B is in the idle orientation. Since the two blades are identical, each blade has the same side surface, and each blade has the same blade gear mechanism, the rotation phase of the common wheel from 180 degrees to 360 degrees is the same as the phase from 000 degrees to 180 degrees, except that the blades 11A and 11B are shown in reverse. 【0074】 It should be noted that from the 090-degree rotation of the common wheel, the blade shaft 12A of the blade 11A moves along with the unidirectional fluid flow in the channel and continues until half a rotation of the common wheel, i.e., a rotation up to 270 degrees (corresponding to the position shown for the 090-degree blade 11B). The trajectory from this 090-degree to 270-degree rotation corresponds to the second half-rotation where the active orientation (at 180 degrees) is assumed. The complementary trajectory from 270 degrees to 090 degrees corresponds to the first half-rotation where the idle orientation (at 000 degrees) is assumed. The same sequence applies to the blade 11B, but there is a 180-degree phase difference. 【0075】 Figure 7 shows the result of the thrust exerted on the unidirectional fluid flow by the propeller system according to FIG. 1 over an operating period during which continuous rotation of the common wheels 9, 9' is executed. 【0076】 The X-axis shows the rotation angle of the common wheels 9, 9', and the Y-axis shows the thrust amount of the individual common wheels during continuous rotation by the curves 69, 69'. The total thrust generated by the propeller system is shown as [69 + 69']. From this figure, it can be directly derived that the propeller system according to the present invention can achieve a substantially constant thrust during operation at a constant rotation speed of the common wheel, and as a result, excellent efficiency and effectiveness can be realized.

Claims

[Claim 1] A propeller system suitable for kinetic interaction with a fluid flowing in one direction through a channel, The aforementioned propeller system is A support structure configured to be integrated into a fixed position within the channel, A motion interaction system provided on the support, wherein when the support is integrated at the fixed position, the motion interaction system extends into the internal region of the channel. Equipped with, The aforementioned motion interaction system includes (i) or (ii) below: (i) at least one pair of rotor blades, preferably at least two pairs of rotor blades, each pair of rotor blades being provided as follows: - The rotor blades each have a planar shape including two opposing working surfaces designed for kinetic interaction with the fluid flow, - The rotor blade comprises a blade shaft that allows the rotor blade to rotate, and a blade gear mechanism that engages with the blade shaft in a drivable manner. - The two rotor blades are spaced apart from each other and rotatably mounted on one side of a common wheel by their respective blade shafts, the common wheel having a wheel axis, the common wheel rotating around the wheel axis, and the two blade shafts are respectively mounted on the common wheel at two positions eccentric with respect to the wheel axis. - The common wheel is rotatably connected to the support by the wheel shaft and drivably connected to the wheel gear mechanism. - The rotation of the common wheel drives the two blade gear mechanisms to rotate the two blade shafts simultaneously. - The motion interaction system is configured such that the two blade axes and the wheel axis are in the same direction or parallel to each other. - During operation of the propeller system, the rotation of the common wheel, combined with the simultaneous rotation of each of the rotor blades around the blade axis, results in a combined rotation performed by each of the rotor blades, each rotor blade follows a periodic trajectory with each rotation of the common wheel, and the two rotor blades do not come into contact with each other during the simultaneous rotation, or (ii) A single rotor blade, provided as follows: - The rotor blade has a planar shape including two opposing working surfaces designed for kinetic interaction with the fluid flow, - The rotor blade has a blade shaft that makes the rotor blade rotatable, and a blade gear mechanism that engages with the blade shaft in a drivable manner. - The rotor blade is rotatably mounted to one side of the common wheel by the blade shaft, the common wheel has a wheel shaft, the common wheel rotates around the wheel shaft, and the blade shaft is mounted to the common wheel at an eccentric position with respect to the wheel shaft. - The common wheel is rotatably connected to the support by the wheel shaft and drivably connected to the wheel gear mechanism. - The rotation of the common wheel drives the blade gear mechanism to rotate the blade shaft, - The motion interaction system is configured such that the blade axis and the wheel axis are in the same direction or parallel to each other. - A propeller system characterized in that, during operation of the propeller system, the rotation of the common wheel, combined with the simultaneous rotation of the rotor blades around the blade axis, results in a combined rotation performed by the rotor blades, and the rotor blades follow a periodic orbit with each rotation of the common wheel. [Claim 2] The propeller system according to claim 1, characterized in that the periodic trajectory followed by the rotor blades corresponds to the shape of a cardioid curve, particularly based on the periodic trajectory of the lateral edges of the rotor blades. [Claim 3] The propeller system according to claim 1, characterized in that the periodic trajectories of the two rotor blades of the pair of rotor blades are similar or identical. [Claim 4] The propeller system according to claim 1, characterized in that the blade gear mechanism of each of the rotor blades has a gear ratio of 1 / 2, and when the common wheel rotates once, the rotor blade rotates half a turn around the blade axis. [Claim 5] The propeller system according to claim 1, characterized in that the blade axes of the two rotor blades of each pair of rotor blades are attached to the common wheel at positions preferably radially opposite to each other with respect to the wheel axis. [Claim 6] The propeller system according to claim 1, characterized in that, during operation of the propeller system, the two rotors of the pair of rotors each perform their combined rotations simultaneously with a predetermined phase difference, preferably a phase difference of 160 to 200 degrees, and most preferably a phase difference of 180 degrees. [Claim 7] The propeller system according to claim 1, characterized in that during one rotation of the common wheel, the rotor blades are oriented in an idle state for minimum kinetic interaction for a first half rotation during one rotation of the common wheel, and the rotor blades are oriented in an active state for maximum kinetic interaction for a second half rotation during one rotation of the common wheel. [Claim 8] During one complete rotation of the common wheel, the rotational speed of the rotor blades gradually increases from the minimum rotational speed to the maximum rotational speed, and then gradually decreases from the maximum rotational speed back to the minimum rotational speed. Preferably, the propeller system according to any one of claims 1 to 7 is characterized in that the ratio of the maximum rotational speed to the minimum rotational speed is about 2:

1. [Claim 9] During one complete rotation of the common wheel, the rotational speed of the rotor blades gradually increases from a minimum rotational speed to a maximum rotational speed, and then gradually decreases from the maximum rotational speed to the minimum rotational speed. Preferably, the ratio of the maximum rotational speed to the minimum rotational speed is approximately 2:

1. The maximum rotational speed is achieved during the first half-rotation of a full rotation of the common wheel, which is the orientation of the rotor blades in the idle state. The propeller system according to claim 7, characterized in that the minimum rotational speed is achieved during the second half-rotation of the common wheel during a full rotation of the rotor blades in the active orientation. [Claim 10] The blade gear mechanism of the rotor blade includes an elliptical gear or elliptical gear that works in cooperation with a circular gear, Preferably, the propeller system according to claim 8 is characterized in that the circular gear is an eccentrically rotating circular gear. [Claim 11] The blade gear mechanism of the rotor blade is attached to each of the common wheels, The propeller system according to any one of claims 1 to 7, characterized in that the blade gear mechanism is arranged to include a coupling gear that meshes with a non-rotating gear fixed to the support at a position concentric with the wheel axis. [Claim 12] The rotor blade has height and width, The propeller system according to any one of claims 1 to 7, characterized in that the blade axis extends parallel to the height direction of the rotor blade, and preferably the height of the rotor blade is greater than the width of the rotor blade. [Claim 13] The propeller system according to any one of claims 1 to 7, characterized in that the opposing working surfaces of the rotor blades are similar or identical, and when viewed in cross-section perpendicular to the height direction of the rotor blades, they are substantially formed as planes having preferably curved lateral edges. [Claim 14] The aforementioned motion interaction system comprises a first pair of rotor blades and a second pair of rotor blades. The first pair of rotor blades are rotatably connected to a first common wheel, and the second pair of rotor blades are rotatably connected to a second common wheel. The first common wheel and the second common wheel are rotatably connected to the support so as to be positioned adjacent to each other on the same plane. The first common wheel and the second common wheel are drivably connected to the first wheel gear mechanism and the second wheel gear mechanism, respectively. Preferably, the first common wheel and the second common wheel rotate in opposite directions to each other during operation, characterized in the propeller system according to any one of claims 1 to 7. [Claim 15] The first pair of rotor blades and the second pair of rotor blades rotate in opposite directions and are mirror symmetric. The propeller system according to claim 14, characterized in that the rotational phase of the rotor blade of the first common wheel and the rotational phase of the rotor blade of the second common wheel have a phase difference of 60 to 120 degrees, preferably 80 to 100 degrees, and more preferably 90 degrees. [Claim 16] The propeller system according to claim 14, characterized in that the periodic trajectories of the first pair of rotor blades partially overlap with the periodic trajectories of the second pair of rotor blades, particularly with respect to the periodic trajectories of the lateral edges of each of the rotor blades. [Claim 17] The first motion interaction system according to option (ii) above, A second motion interaction system according to option (ii) above, Equipped with, The first motion interaction system has a single rotor rotatably connected to a first common wheel, The second motion interaction system has a single rotor rotatably connected to a second common wheel, The first common wheel and the second common wheel are rotatably connected to the support so as to be positioned adjacent to each other on the same plane. The first common wheel and the second common wheel are drivably connected to the first wheel gear mechanism and the second wheel gear mechanism, respectively. The propeller system according to any one of claims 1 to 7, wherein the first common wheel and the second common wheel preferably rotate in opposite directions to each other during operation. [Claim 18] The single rotor of the first motion interaction system and the single rotor of the second motion interaction system rotate in opposite directions and are mirror symmetric. The propeller system according to claim 17, characterized in that the rotational phases of the first common wheel and the second common wheel differ by a predetermined phase difference, preferably 160 to 200 degrees, and most preferably 180 degrees. [Claim 19] The propeller system according to claim 17, characterized in that the periodic trajectory of the single rotor of the first motion interaction system overlaps with the periodic trajectory of the single rotor of the second motion interaction system, particularly with respect to the periodic trajectory of the lateral end of each of the rotors. [Claim 20] A channel for guiding a fluid flow in one direction, The channel comprises a side wall, an inlet side and an outlet side, and guides the fluid flow in one direction from the inlet side to the outlet side. The channel comprises the propeller system according to any one of claims 1 to 7. The support for the propeller system is fixedly integrated within the channel, and the kinetic interaction system of the propeller system has at least one common wheel. The aforementioned common wheel is provided as follows: - During a full rotation of the common wheel, the rotor blades are oriented in an idle state (inactive or drag) for the first half rotation of the full rotation of the common wheel, and during a second half rotation of the full rotation of the common wheel, the rotor blades are oriented in an active state (thrust) for the maximum kinetic interaction. - The common wheel rotates opposite to the unidirectional fluid flow in the channel during the first half-turn of the complete rotation, and the common wheel rotates with the unidirectional fluid flow in the channel during the second half-turn of the complete rotation. A channel characterized in that the first half-rotation during one full rotation is performed at a position a short distance from the nearest side wall of the channel, and the second half-rotation during one full rotation is performed at a position a long distance from the nearest side wall of the channel. [Claim 21] The propeller system is fixedly integrated into the longitudinal section of the channel through which the fluid flow passes. The channel according to claim 20, wherein the longitudinal section has a width between the opposing side walls of the channel, and the width is greater than the width required for the rotor blade to perform its respective periodic trajectory during operation without contacting the opposing side walls, and is not greater than 20%, preferably not greater than 10%.

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