WO1980000991A1 - Hydrodynamic machine - Google Patents

Hydrodynamic machine Download PDF

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Publication number
WO1980000991A1
WO1980000991A1 PCT/NL1979/000006 NL7900006W WO8000991A1 WO 1980000991 A1 WO1980000991 A1 WO 1980000991A1 NL 7900006 W NL7900006 W NL 7900006W WO 8000991 A1 WO8000991 A1 WO 8000991A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
steering
blades
rod
hydrodynamic machine
Prior art date
Application number
PCT/NL1979/000006
Other languages
French (fr)
Inventor
J Meulen
Original Assignee
Schelde Nv
J Meulen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schelde Nv, J Meulen filed Critical Schelde Nv
Publication of WO1980000991A1 publication Critical patent/WO1980000991A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/062—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction
    • F03B17/065—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having a cyclic movement relative to the rotor during its rotation
    • F03B17/067—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having a cyclic movement relative to the rotor during its rotation the cyclic relative movement being positively coupled to the movement of rotation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/50—Hydropower in dwellings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Definitions

  • the invention relates to a high flow capacity hydrodynamic machine.
  • Turbines and pumps have in common that the power thereof is directly related to the product of the height of fall or pressure head, respectively, and the flow capacity. At a predetermined power the height of fall or pressure head, respectively, will be small if the flow capacity is high.
  • the usual hydrodynamic machines destined for a high flow capacity have a rotor of the screw or propeller type which is accommondated in a flow channel having a circular cross section. In general the available profile for the passage of water is utilized therein not very efficiently.
  • the rotor is often directly coupled to a generator or a motor, respectively, mounted in an extension of the flow channel, i.e. in the. water.
  • the latter may be avoideti by providing a bent conduit leading round the generator or the motor, respectively, for diverting the water flow. Such a diversion necessitates much room, for the construction and causes an increase of the flow resistance.
  • the invention aims to avoid the above-mentioned drawbacks and to provide a high flow capacity hydrodynamic machine in which the area of the usually available cross sectional passage plane is utilized more efficiently and in which the machine coupled to the rotor may he kept outside the water flow without using bends.
  • the hydrodynamic machine is characterized by a flow channel or opening having a substantially rectangular cross section and accommodated therein a set of blades arranged along the curved surface of a cylinder and supported oscillatably on both ends in disc-like bearing houses said bearing houses being supported in a rotatable manner with respect to the axis of said curved cylinder surface, at least one of said.bearing houses being provided with a mechanism by means of which the steering point formed by the intersection of the corresponding perpendiculars on the different blades may be moved to and/or kept at a location spaced at some distance from the axis of said bearing house.
  • the intersection of the corresponding perpendiculars on the different blades e.g.
  • the axis of the bearing houses the blades will always occupy a tangential position. Upon displacement of this intersection along a diameter the blades will be able to take a non-tangential position.
  • the blades Upon rotation of the bearing houses the blades will perform an oscillating motion with respect to the tangential position. The adjustment of the steering point is determinative for the amplitude of the oscillating motion and for the position of the tangential positions from which the motion of the blades occurs.
  • a known mechanism for displacing the steering point is to be found in the so-called Voith-Schneider propellers.
  • Other steering mechanisms are however also possible .
  • the power used or given off may be controlled by a suitable selection of the position of the steering point.
  • each one of the blades is connected to a steering disc by means of a hinge rod system, which steering disc may be moved with respect to the center of the bearing house through a transmission by means of an actuating means running through the hollow bearing shaft of the bearing house.
  • the said steering disc will have to be solely movably along the diameter of the disc.
  • Each one of the hinge rod systems may comprise corresponding to the known Voith-Schneider construction a steering rod hingedly connected to said steering disc, said steering rod.being guided into a slide block rotatably fastened to a bos of the bearing house a coupling rod hingedly connected to said steering rod and a lever hingedly connected to said coupling rod and connected to a blade.
  • Fig. 1 shows a cross section of a flow channel including in elevation the hydrodynamic machine according to the invention.
  • Fig. 2 shows a cross section along the line II-II in fig. 1.
  • the device shown comprises a flow channel 1 having a rectangular cross section and accommodated therein a substantially cylindrical turbine or pump.
  • This turbine or pump includes a number of blades 2 arranged along the curved plane of a cylinder and supported at both ends thereof in a bearing houses 3,4 having a circular cross section. These houses on their turn are rotatably supported within bearing recesses of the side walls of the flow channel 1.
  • the bearing house 4 has been provided with an outgoing hollow shaft 6 which is driven by means of the construction including the blades 2 and the bearing houses 3,4 when used as a turbine and which is driven by means of a not shown motor when used as a pump.
  • the shaft 6 possesses a not shown sealing means in order to prevent water from running out of the channel 1 along said shaft to the outside.
  • the bearing house 4 has been provided with a mechanism for bringing the blades 2 into oscillating motion and adjusting this oscillating motion with respect to the bearing exes thereof when rotating the house.
  • This mechanism includes a steering disc 7 which has been connected by means of a not shown transmission to an actuating rod 8 running through the hollow shaft 6, which actuating rod 8 may be rotated and/or moved in longitudinal direction. By means of this actuating rod 8 the disc 7 may be brought into a position eccentric with respect to the center of the house 4.
  • Each one of the oscillatable blades 2 is connected to said steering disc 7 by means of a hinge rod system.
  • a hinge rod system comprises a steering rod 13 hingedly connected to the disc 7, said steering rod being guided into a rotatable slide block 12 of a central boss 11, a coupling rod 14 hingedly connected to said rod and a lever 15 rigidly connected to the blade and hingedly connected to said coupling rod 14.
  • the center M of the steering disc 7 coincides with the center of the boss 11 the blades 2 will assume a tangential position in which the intersection P of the corresponding perpen diculars on the blades coincides with the center of the boss 11.
  • the power (turbine) or the flow capacity (pump) may be controlled by positioning P either more or less eccentric by means of the steering disc 7.
  • the position of P may be adapted to the directions of the water flow.
  • the bearing house 3 may also be provided with a steering mechanism for positioning the blades: in this case both mechanisms have to be controlled synchronically from a common point .
  • the point P will usually be movable along only one diameter perpendicular to the water flow, i.e. in two directions with respect to the center.
  • the transmission between the actu ating rod 8 and the steering disc 7 may be of a simple construct
  • the same machine may be employed both as a pump and as a turbine. 4.
  • the water may flow through the cage in two directions and give off power (turbine) or be displaced (pump) while reversing the rotational direction or not. 5.
  • turbine turbine
  • pump pump
  • the axis of the cage may be positioned at any angle and may extend outside the water flow; when used as a turbine the generator may be coupled by means of a simple coupling (no square transmission and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Hydraulic Turbines (AREA)

Abstract

A hydrodynamic machine for high flow capacity circumstances and to be used either as a power generating turbine or a pump includes a flow channel or opening (1) of substantially rectangular cross section and accommodated therein a set of blades (2) arranged according to an imaginary cylinder. The blades are supported at both ends in rotatably bearing (3, 4) houses so that they may oscillate or rock. At least one of the bearing houses (4) is provided with a mechanism by which the steering point (P) formed by the intersection of corresponding perpendiculars on the different blades may be moved to and/or kept at a location spaced at some distance form the axis of said bearing house (4).

Description

Hydrodynamic machine
The invention relates to a high flow capacity hydrodynamic machine.
Turbines and pumps have in common that the power thereof is directly related to the product of the height of fall or pressure head, respectively, and the flow capacity. At a predetermined power the height of fall or pressure head, respectively, will be small if the flow capacity is high. The usual hydrodynamic machines destined for a high flow capacity have a rotor of the screw or propeller type which is accommondated in a flow channel having a circular cross section. In general the available profile for the passage of water is utilized therein not very efficiently. The rotor is often directly coupled to a generator or a motor, respectively, mounted in an extension of the flow channel, i.e. in the. water. The latter may be avoideti by providing a bent conduit leading round the generator or the motor, respectively, for diverting the water flow. Such a diversion necessitates much room, for the construction and causes an increase of the flow resistance. The invention aims to avoid the above-mentioned drawbacks and to provide a high flow capacity hydrodynamic machine in which the area of the usually available cross sectional passage plane is utilized more efficiently and in which the machine coupled to the rotor may he kept outside the water flow without using bends.
To that effect the hydrodynamic machine according to the invention is characterized by a flow channel or opening having a substantially rectangular cross section and accommodated therein a set of blades arranged along the curved surface of a cylinder and supported oscillatably on both ends in disc-like bearing houses said bearing houses being supported in a rotatable manner with respect to the axis of said curved cylinder surface, at least one of said.bearing houses being provided with a mechanism by means of which the steering point formed by the intersection of the corresponding perpendiculars on the different blades may be moved to and/or kept at a location spaced at some distance from the axis of said bearing house. In case the intersection of the corresponding perpendiculars on the different blades (e.g. the .perpendiculars located at the oscillating axes thereof) coincides with, the axis of the bearing houses the blades will always occupy a tangential position. Upon displacement of this intersection along a diameter the blades will be able to take a non-tangential position. Upon rotation of the bearing houses the blades will perform an oscillating motion with respect to the tangential position. The adjustment of the steering point is determinative for the amplitude of the oscillating motion and for the position of the tangential positions from which the motion of the blades occurs.
A known mechanism for displacing the steering point is to be found in the so-called Voith-Schneider propellers. Other steering mechanisms are however also possible . The power used or given off may be controlled by a suitable selection of the position of the steering point.
When used as a turbine there exists a power control and when used as a pump there exists a flow capacity control. Preferably each one of the blades is connected to a steering disc by means of a hinge rod system, which steering disc may be moved with respect to the center of the bearing house through a transmission by means of an actuating means running through the hollow bearing shaft of the bearing house.
In general the said steering disc will have to be solely movably along the diameter of the disc.
Each one of the hinge rod systems may comprise corresponding to the known Voith-Schneider construction a steering rod hingedly connected to said steering disc, said steering rod.being guided into a slide block rotatably fastened to a bos of the bearing house a coupling rod hingedly connected to said steering rod and a lever hingedly connected to said coupling rod and connected to a blade.
The invention will now be described in further detail with reference to the diagramative figures. Fig. 1 shows a cross section of a flow channel including in elevation the hydrodynamic machine according to the invention. Fig. 2 shows a cross section along the line II-II in fig. 1. The device shown comprises a flow channel 1 having a rectangular cross section and accommodated therein a substantially cylindrical turbine or pump. This turbine or pump includes a number of blades 2 arranged along the curved plane of a cylinder and supported at both ends thereof in a bearing houses 3,4 having a circular cross section. These houses on their turn are rotatably supported within bearing recesses of the side walls of the flow channel 1. The bearing house 4 has been provided with an outgoing hollow shaft 6 which is driven by means of the construction including the blades 2 and the bearing houses 3,4 when used as a turbine and which is driven by means of a not shown motor when used as a pump. The shaft 6 possesses a not shown sealing means in order to prevent water from running out of the channel 1 along said shaft to the outside.
The bearing house 4 has been provided with a mechanism for bringing the blades 2 into oscillating motion and adjusting this oscillating motion with respect to the bearing exes thereof when rotating the house.
This mechanism includes a steering disc 7 which has been connected by means of a not shown transmission to an actuating rod 8 running through the hollow shaft 6, which actuating rod 8 may be rotated and/or moved in longitudinal direction. By means of this actuating rod 8 the disc 7 may be brought into a position eccentric with respect to the center of the house 4.
Each one of the oscillatable blades 2 is connected to said steering disc 7 by means of a hinge rod system. Such a hinge rod system comprises a steering rod 13 hingedly connected to the disc 7, said steering rod being guided into a rotatable slide block 12 of a central boss 11, a coupling rod 14 hingedly connected to said rod and a lever 15 rigidly connected to the blade and hingedly connected to said coupling rod 14. In case the center M of the steering disc 7 coincides with the center of the boss 11 the blades 2 will assume a tangential position in which the intersection P of the corresponding perpen diculars on the blades coincides with the center of the boss 11.
It will be apparent from fig. 2 that upon displacement of the steering disc 7 this point P assumes an eccentric position. Upon rotation of the cage 2,3,4 the blades will perform an oscil lating motion in this case. The blades passing the line through P and the center of the boss 11 will have a tangential position. The blades passing the line perpendicular to the one through P the center of the boss 11 show the largest deviation with respect to the tangential position. The larger the deviation from the tangential position the larger the driving action of the cage will be when used as a turbine and the larger the thrust of the cage will be when used as a pump, respectively. In the figure there has been indicated the direction in which the water will flow upon rotation in the indicated direction. The flow of water runs in a direction substantially perpendicular to the line through P and the center of the boss 11.
The power (turbine) or the flow capacity (pump) may be controlled by positioning P either more or less eccentric by means of the steering disc 7. The position of P may be adapted to the directions of the water flow. For controlling the position of the blades there are also other possibilities which have been described as such in the literature concerning horizontal propelling means for
In case of blades 2 of great length the bearing house 3 may also be provided with a steering mechanism for positioning the blades: in this case both mechanisms have to be controlled synchronically from a common point .
The point P will usually be movable along only one diameter perpendicular to the water flow, i.e. in two directions with respect to the center. Thereby the transmission between the actu ating rod 8 and the steering disc 7 may be of a simple construct
As the most important advantages of the present machine the following may be mentioned: 1. The efficiency in case of large amounts of water and a small pressure head on a small height of fall, respectively, is high when used as a pump or as a turbine, respectively. 2. The. available cross section of the water passage is utilized as fully as possible.
3. The same machine may be employed both as a pump and as a turbine. 4. The water may flow through the cage in two directions and give off power (turbine) or be displaced (pump) while reversing the rotational direction or not. 5. When used as a pump it is possible to start the driving motor without load followed by gradually increasing the flow capacity to the desired value.
6. The axis of the cage may be positioned at any angle and may extend outside the water flow; when used as a turbine the generator may be coupled by means of a simple coupling (no square transmission and the like.
Within the scope of the main claim many modifications and alterations are possible.

Claims

C L A I M S
1. A high flow capacity hydrodynamic machine characterized by a flow channel or opening (l) having a substantially rectangular cross section and accommodated therein a set of blades (2) arranged along the curved surface, of an imaginary cylinder and supported oscillatably on both ends in. disc-like bearing houses (3,4), said bearing houses being supported in a rotatable manner with respect to the axis of said cylinder, at least one of said bearing houses (4) being provided with a mechanism by means of which the steering point (P) formed by the intersection of the corresponding perpendiculars on the different blades may be move to and/or kept at a location spaced at some distance from the axis of said bearing house (4).
2. Hydrodynamic machine of claim 1 , characterized in that said steering point (P) may be moved along a diameter to and/or with respect to the axis of the bearing house (4) so that the degree of eccentricity may be adjusted.
3. Hydrodynamic machine of claim 2, characterized in that each of said blades (2) is connected to a steering disc (7) by means of a hinge rod system, which steering disc may be moved with respect to the center of the bearing house (4) through a transmission by means of an actuating means (8) running through the hollow bearing shaft (6) of the bearing house (4).
4. Hydrodynamic machine of claim 3, characterized in that each of said hinge rod systems comprises a steering rod being guided into a slide block (12) rotatably fastened to a boss (11) of the bearing house (4), a coupling rod (14) hingedly connected to said steering rod and a lever (15) hingedly connected to said coupling rod and connected to a blade (2).
PCT/NL1979/000006 1978-11-14 1979-11-14 Hydrodynamic machine WO1980000991A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7811248A NL7811248A (en) 1978-11-14 1978-11-14 FLOW MACHINE.
NL7811248 1978-11-14

Publications (1)

Publication Number Publication Date
WO1980000991A1 true WO1980000991A1 (en) 1980-05-15

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ID=19831893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1979/000006 WO1980000991A1 (en) 1978-11-14 1979-11-14 Hydrodynamic machine

Country Status (2)

Country Link
NL (1) NL7811248A (en)
WO (1) WO1980000991A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068559A2 (en) * 1981-06-19 1983-01-05 Carl Bruno Strandgren Wheel assembly for actuation by fluids
GB2244099A (en) * 1990-05-16 1991-11-20 Printer Marketing Company Limi Turbine assembly
US5131805A (en) * 1991-04-19 1992-07-21 Stevenson Lester A Dual axis fluid current motor
WO1995008708A1 (en) * 1993-09-21 1995-03-30 Franz Schweighofer Device for converting water or wind power
GB2360551A (en) * 2000-03-21 2001-09-26 Alan John Rogan Turbine
WO2004061299A1 (en) * 2003-01-03 2004-07-22 Gerd-Stephan Bartkowiak Wind turbine with horizontal shaft
GB2454523A (en) * 2007-11-10 2009-05-13 Neil Andrew Blackett Caldwell Orbiting vane fluid pump
ITBZ20110058A1 (en) * 2011-11-21 2013-05-22 Baroni Carlo FLUID DYNAMIC MACHINE WITH ONE OR MORE IMPELLERS WITH LOADABLE LOADERS WITH BOUND COMMAND.
US9562434B2 (en) 2010-11-03 2017-02-07 National Research Council Of Canada Oscillating foil turbine
ITUA20163710A1 (en) * 2016-05-04 2017-11-04 Flaminio Fracaroli WIND TURBINE WITH VERTICAL AXIS WITH MOBILE BLADES
WO2019168533A1 (en) 2018-03-01 2019-09-06 Ocean Renewable Power Company, Inc. Autonomous underwater vehicles

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL25453C (en) *
GB191004269A (en) * 1909-02-23 1910-11-10 Samuel Stewart Harper Wind Mill.
FR604390A (en) * 1925-10-09 1926-05-03 Leblanc Vickers Maurice Sa Turbine with axis of rotation transverse to the direction of the current
GB262393A (en) * 1925-12-07 1927-07-21 Ernst Schneider Improvements in blade-wheels for turbines, turbine pumps or the like apparatus
GB305226A (en) * 1928-02-02 1930-05-01 Walter Voith Improvements in and relating to bladed wheels
FR724995A (en) * 1931-10-23 1932-05-06 Retroversible turbo-generator-propellant for all devices using the motive power of gases or liquids under pressure
US2015514A (en) * 1934-03-26 1935-09-24 Voith Schneider Propeller Comp Device for the control of motion of movable blades on blade wheels
CH204957A (en) * 1936-10-22 1939-05-31 Amsler Angelo Water turbine with vibrating impeller blades.
FR1396515A (en) * 1964-03-12 1965-04-23 Motor with vertical axis and adjustable wings driven by a streamline flow

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL25453C (en) *
GB191004269A (en) * 1909-02-23 1910-11-10 Samuel Stewart Harper Wind Mill.
FR604390A (en) * 1925-10-09 1926-05-03 Leblanc Vickers Maurice Sa Turbine with axis of rotation transverse to the direction of the current
GB262393A (en) * 1925-12-07 1927-07-21 Ernst Schneider Improvements in blade-wheels for turbines, turbine pumps or the like apparatus
GB305226A (en) * 1928-02-02 1930-05-01 Walter Voith Improvements in and relating to bladed wheels
FR724995A (en) * 1931-10-23 1932-05-06 Retroversible turbo-generator-propellant for all devices using the motive power of gases or liquids under pressure
US2015514A (en) * 1934-03-26 1935-09-24 Voith Schneider Propeller Comp Device for the control of motion of movable blades on blade wheels
CH204957A (en) * 1936-10-22 1939-05-31 Amsler Angelo Water turbine with vibrating impeller blades.
FR1396515A (en) * 1964-03-12 1965-04-23 Motor with vertical axis and adjustable wings driven by a streamline flow

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068559A2 (en) * 1981-06-19 1983-01-05 Carl Bruno Strandgren Wheel assembly for actuation by fluids
EP0068559A3 (en) * 1981-06-19 1984-08-15 Carl Bruno Strandgren Wheel assembly for actuation by fluids
GB2244099A (en) * 1990-05-16 1991-11-20 Printer Marketing Company Limi Turbine assembly
GB2244099B (en) * 1990-05-16 1995-01-11 Printer Marketing Company Limi Turbine assembly
US5131805A (en) * 1991-04-19 1992-07-21 Stevenson Lester A Dual axis fluid current motor
WO1995008708A1 (en) * 1993-09-21 1995-03-30 Franz Schweighofer Device for converting water or wind power
GB2360551A (en) * 2000-03-21 2001-09-26 Alan John Rogan Turbine
GB2360551B (en) * 2000-03-21 2003-01-22 Alan John Rogan Turbines
WO2004061299A1 (en) * 2003-01-03 2004-07-22 Gerd-Stephan Bartkowiak Wind turbine with horizontal shaft
GB2454523B (en) * 2007-11-10 2011-12-14 Neil Andrew Blackett Caldwell Pump for fluids
GB2454523A (en) * 2007-11-10 2009-05-13 Neil Andrew Blackett Caldwell Orbiting vane fluid pump
US9562434B2 (en) 2010-11-03 2017-02-07 National Research Council Of Canada Oscillating foil turbine
ITBZ20110058A1 (en) * 2011-11-21 2013-05-22 Baroni Carlo FLUID DYNAMIC MACHINE WITH ONE OR MORE IMPELLERS WITH LOADABLE LOADERS WITH BOUND COMMAND.
WO2013076094A3 (en) * 2011-11-21 2013-07-18 BARONI, Carlo Turbomachine having one or more blade wheels with positively driven moving blades.
US9970306B2 (en) 2011-11-21 2018-05-15 Piergiorgio Pasetto Fluid dynamic machine with one or more impellers with restrained control mobile blades
ITUA20163710A1 (en) * 2016-05-04 2017-11-04 Flaminio Fracaroli WIND TURBINE WITH VERTICAL AXIS WITH MOBILE BLADES
WO2017191666A1 (en) * 2016-05-04 2017-11-09 Fracaroli Flaminio Vertical axis wind turbine with moving blades
WO2019168533A1 (en) 2018-03-01 2019-09-06 Ocean Renewable Power Company, Inc. Autonomous underwater vehicles
EP3759339A4 (en) * 2018-03-01 2021-11-03 Ocean Renewable Power Company, Inc. Autonomous underwater vehicles
US11946442B2 (en) 2018-03-01 2024-04-02 Ocean Renewable Power Company, Inc. Autonomous underwater vehicles

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