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GB2489268A - Cyclic to rotary motion converter - Google Patents

Cyclic to rotary motion converter Download PDF

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Publication number
GB2489268A
GB2489268A GB1104896.4A GB201104896A GB2489268A GB 2489268 A GB2489268 A GB 2489268A GB 201104896 A GB201104896 A GB 201104896A GB 2489268 A GB2489268 A GB 2489268A
Authority
GB
United Kingdom
Prior art keywords
turbine
unidirectional
energy
motion
source
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB1104896.4A
Other versions
GB201104896D0 (en
Inventor
Majid Khan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1104896.4A priority Critical patent/GB2489268A/en
Publication of GB201104896D0 publication Critical patent/GB201104896D0/en
Publication of GB2489268A publication Critical patent/GB2489268A/en
Withdrawn legal-status Critical Current

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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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • 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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
    • F03B13/1825—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation
    • F03B13/183—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation of a turbine-like wom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/14—Geometry two-dimensional elliptical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/14—Geometry two-dimensional elliptical
    • F05B2250/141—Geometry two-dimensional elliptical circular
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

An energy conversion apparatus to change the mechanical energy of a source of cyclical motion to unidirectional rotational kinetic energy comprises at least one unidirectional turbine 42 which is submerged in a fluid and is subject to cyclic motion under the influence of the source where the cyclic motion of the source is transferred to the turbine via a connector 40, experiencing the relative flow of fluid the unidirectional turbine turns in a single direction. Preferably source of cyclical motion is ocean surface waves and the turbine may be a Savonius, Darrieus, Banki or Wells turbine. The device may be connected to an energy storage arrangement such as raising a mass, compressing a spring, charging a battery or pressuring a gas filled tank. A rotational stabiliser such as a flywheel or governor may stabilize the rotation of the turbine and a weight or spring may stabilise the cyclic motion of the apparatus.

Description

Description solid bar, a truss structure, an enclosed
fluid or a magnetic field.
Cyclic to rotary motion converter Figure 8
Field of invention
The cyclic to rotary converter adapted The present invention is related to the for conversion of ocean waves is field of conversion of cyclic motion to schematically represented.
rotation in a single direction.
Figure 9
Description of the drawings
Example of rotational stabilizer: a Figure 1 flywheel connected to a unidirectional turbine Shows a few examples of cyclic motion Figure 10 Figure 2 Example of rotational stabilizer: a Schematic representation of slider crank governor attached to the unidirectional
mechanism (Prior art) turbine.
Figure 3 Figure 11 Example of source of cyclic motion: an Examples of cyclic motion stabilizer -A object floating on ocean surface weight attached to the apparatus exhibiting a cyclic motion under the influence of ocean waves Figure 12 Figure 4 Examples of cyclic motion stabilizer -A spring attached to the apparatus Example of source of cyclic motion: A bridge in cyclic motion under the influence of forces of traffic load or wind Figure 13 Figure 5 Examples of Path constraint -An arrangement to constrain the cyclic Example of a unidirectional turbine: motion of the apparatus to a straight line
Savonius turbine (Prior art)
Figure 14 Figure 6 Show an arrangement to convert the rotational kinetic energy of the device to Example of a unidirectional turbine: electrical energy by using an electrical Darrieus turbine (Prior art) generator and also storing it as electric charge in a battery. The stored electrical energy can then be delivered as and Figure 7 when required.
Numerous possible configurations of connecting means are diagrammatically represented such as a flexible rope, a
Background many types and designs of turbines
there are some that do not need to The problem of converling a self change the direction as the direction of repealing or cyclic motion to a smooth flow changes. These types of turbine rotation in a single direction is ages old. are termed here as unidirectional For example numerous inventions have turbines and would be referred to with been made to convert the repetitive the same terminology in this text. A motion of human limbs to rotation in a couple of well known examples in this single direction. One of the most notable regard are Savonius type of turbine as of these inventions is crank shaft which in Figure 5 and Darrieus type of turbine was in historic terms more recently used as in Figure 6.
to convert the repetitive linear kinetic energy of a piston in an internal A turbine is normally mounted on a fixed combustion or steam engine to base positioned so that the turbine unidirectional rotational kinetic energy. would receive the flow of the incoming There is a general short coming in these fluid. In principal however turbines need energy conversion devices however, a relative flow of a fluid to work. A turbine would perform equally well if it is The available solutions for the moved in a static fluid. This implies that conversion are limited in use. For turbines can also be used to convert the example the slider crank mechanism 10 linear motion of a moving object. The shown in Figure 2 and mentioned above moving object can also change converts a self repeating motion that directions and its linear kinetic energy follows a path along a straight line of a would still be converted to unidirectional fixed length. The same mechanism is rotational kinetic energy if a not suitable to use if the involved unidirectional turbine is used.
geometry of path or even the frequency of repetition of the linear motion of the As in the example of a floating object piston is highly variable. An example of moving cyclically under the influence of such a repetitive motion is a mass ocean waves, the moving object would floating on the surface of an ocean and change directions and tend to come moving under the influence of surface back to its starting position. As in Figure waves as shown in Figure 3. The motion 8 the resulting rotational direction of the of the float would tend to repeat it self unidirectional turbine 42 would remain but the precise path and frequency of the same as the turbine is moved in the cycles of its motion would vary over varying directions. Unidirectional each repeating cycle of the motion. A turbines can thus be used to solve the need thus arises for a solution to ages old problem of converting the convert any cyclic motion in general to mechanical energy of cyclic motion to rotational motion in a single direction. unidirectional rotational kinetic energy.
Turbines are amongst the oldest of The present invention revolves around methods used for converting linear the idea of subjecting a unidirectional kinetic energy of a fluid to unidirectional turbine to cyclic motion by connecting it rotational energy. Turbines can work in to a source of cyclic motion with an a range of speeds of the fluid. Many intention to convert the energy of cyclic turbines however work best when they motion of the source to unidirectional maintain a certain angle with respect to rotational kinetic energy.
the direction of flow of working fluid.
They need to change direction when the direction of the fluid changes. Of the The apparatus turbine etc. AU such turbines are unidirectional turbines and could be The main component of the invention is used in the construction of the present a unidirectional turbine which receives cyclic to rotary converter.
the mechanical energy of cyclic motion from a source via a connecting means. A range of other construction schemes Experiencing a relative flow the turbine are possible to build a turbine with these turns in a single direction. The main properties.
involved features of the invention are further explained b&ow, 5 -Working fluid I -Cyclic motion The fluid in which the turbine works can be either liquid, gas or any form of lt is a type of motion that tends to repeat matter that exhibits the properties of a it self. As shown in figure 1 The path of fluid for example water, air or a mixture the motion can take a number of linear, of two or more substances.
planar or spatial forms for example, straight line, square, rectangle, circular 6 -Connecting means arc, circle, eHipse, shape of figure 8' or helix etc. It is the means to connect the source of cyclic motion to the unidirectional The path of the motion can even be turbine. It transfers the cyclic motion of completely random around a mean as in the source to the turbine thus random physical oscillations, transferring the mechanical energy of the source to the turbine. Figure 7 2 -Source of Cyclic motion shows a few possible configurations of the connecting means. It can be a It is the source that generates the cyclic flexible rope 24 or solid bar 26. It can be motion. lt can be a physical object such composed of several structural as an oscillating bridge 18 as in Figure 4 members as in truss structure 28. U can or a non-physical entity such as a be hydraulic or pneumatic as magnetic field. Ocean Waves are represented by 30 and 32 in Figure 7. It brought into particular focus here as can even be a non-physical entity such they are one of the most abundant as a magnetic field. A combination of sources of energy in the form of cyclic magnets such as 34 can be used to motion. Figure 3 shows a float 12 create such as field. A number of other floating on ocean surface. The float arrangements are possible to connect to exhibits cyclic motion following path 16 connect the source to the unidirectional under the influence of ocean wave 14. turbine.
The float can thus act as a source of cyclic motion.
The cyclic to rotary converter for Ocean 3 -Unidirectional Turbine Waves As mentioned earlier numerous types of Although the apparatus has a variety of turbine can operate with varying potential applications, a major directions of flow of a working fluid. A application will be brought in particular few examples in this regard are focus here.
Savonius turbine 20 as shown in Figure 5, Darrieus turbine 22 as shown in Ocean waves have long been Figure 6, Banlci turbine and Well's recognized as a vast source of energy.
Efforts for taping this energy have A number of devices could be used to however been facing difficulties owing store the energy harnessed by the mainly to the harsh ocean environment apparatus. For example as shown in and the unpredictable cyclic nature of Figure 14 the electric energy produce by the waves. The present invention can be a generator run by the turbine could be used to tap this cyclic mechanical stored as electric charge in a battery 56 energy by converting it to unidirectional and then delivered as and when rotational energy which can then be required. The rotational kinetic energy of conveniently converted to other useful the turbine could also be stored as forms of energy such as electricity. The pressure in a gas filled tank or as simplicity of the present invention makes gravitational potential energy of a mass it particularly suitable for economic and etc. convenient usage on a mass scale.
3 -Rotational stabilizer Figure 8 shows an embodiment of the apparatus adapted for conversion of Addition of this component would ocean waves. Float 38 floats on ocean stabilize the rotation of the apparatus.
surface and experiences a cyclic motion Examples of such stabilizers are a as a surface wave 36 passes. This flywheel 44 as in Figure 9 or a governor motion is transferred to unidirectional 46 as in Figure 10.
turbine 42 submerged at a suitable depth, via the connecting means 40. As 4 -Cyclic motion stabilizer the turbine moves, it experiences a relative flow of water and starts rotating Addition of this component stabilizes the in a single direction. This rotational cyclic motion of the apparatus. In the energy can then be converted to other particular application of the apparatus in forms of energy. A number of additions conversion of energy of ocean waves, a are possible to make the apparatus heavy weight 48 as in Figure 11 hanging more useful. beneath the apparatus would provide stability to the overall cyclic motion of the apparatus around a mean position.
Further improvements Similarly an anchored spring 50 as shown in Figure 12 can also be attached A few additional feature are mentioned to the apparatus to stabilize the cyclic below motion of the apparatus.
I -Energy recovery device 5 -Path constraint This additional component would Depending on the particular application convert the rotational kinetic energy of a need may arise to restrain the overall the unidirectional turbine to other useful path of cyclic motion of the apparatus.
forms of energy. For example as shown The constraint would make the in figure 14 an electric generator 54 apparatus follow a predefined path.
could be used to convert the rotational Figure 13 shows a linear path constraint kinetic energy of the turbine to electrical 52. The path constraint could however energy. Similarly a pump could be used have numerous geometric forms such a to produce pressure in a piped fluid. circular arc, shape of Figure 8' or an ellipse etc. 2 -Energy storage device

Claims (1)

  1. CI&ms combination of different forms of matter that exhibits the properties of a fluid.
    I -An energy conversion apparatus intended to convert the mechanical 7 -Apparatus as in claim 1 where the energy of a single or plurality of source rotational kinetic energy of the of cycUc motion to unidirectional unidirectional turbine is converted into rotational kinetic energy comprising; other useful forms by a single or plurality of energy conversion device such as an a -means to connect the source to a electric generator or a pump for further single or plurality of unidirectional use.turbine 8 -Apparatus as in claim 7 where the b -a single or plurality of unidirectional energy converted by the said energy turbine submerged in a fluid that turns in conversion device is stored in a single a single direction after experiencing a or plurality of energy storage relative flow of fluid upon receiving the arrangement such as by raising a mass cycUc motion of the source via the against gravity, stretching or connecting means, thus converting the compressing a spring, charging an mechanical energy of cyclic motion of electric battery or by pressurising a gas the source into unidirectional rotational filled tank.kinetic energy.
    9 -Apparatus as in claim 1 where the 2 Apparatus as in claim 1 where the rotation of the unidirectional turbine is cyclic motion is a type of motion that stabilized by using a single or plurality of tends to repeat itself in one two or three rotational stabilizer such as a fly wheel dimensions in space. or a governor.
    3 -Apparatus as in claim I where the 10 -Apparatus as in claim I where the source is ocean surface waves, or any cyclic motion of the apparatus is physical or non physical entity that could stabilized by a single or plurality of generate cyclic motion. stabilizing agent such as a heavy weight or an anchored spring attached to the 4 -Apparatus as in claim 1 where the apparatus.connecting means is a rope, beam, truss, combination of structural 11 -Apparatus as in claim I where a members, enclosed fluid, electric field, single or plurality of path constraint is magnetic field or any physical or non used to constrain the cyclic motion of physical entity that could transfer the the apparatus to a linear, circular, mechanical energy of cyclic motion of elliptical, helica or any other predefined the source to the unidirectional turbine, one, two or three dimensional path.
    -Apparatus as in claim 1 where the unidirectional turbine is Savonius, Darrieus, Banki, Well's or any other type of turbine that maintains its sense of rotation regardless of changes in the direction of relative flow of fluid.
    6 -Apparatus as in claim 1 where the fluid is a liquid, a gas or any
GB1104896.4A 2011-03-23 2011-03-23 Cyclic to rotary motion converter Withdrawn GB2489268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1104896.4A GB2489268A (en) 2011-03-23 2011-03-23 Cyclic to rotary motion converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1104896.4A GB2489268A (en) 2011-03-23 2011-03-23 Cyclic to rotary motion converter

Publications (2)

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GB201104896D0 GB201104896D0 (en) 2011-05-04
GB2489268A true GB2489268A (en) 2012-09-26

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449740A (en) * 1974-03-27 1976-09-15 Babintsev I A Apparatus for converting sea wave energy into electrical energy
US4359868A (en) * 1981-06-10 1982-11-23 Slonim David Meir Ocean wave energy converter
US4406586A (en) * 1980-11-13 1983-09-27 Roche Kerandraon Oliver Device to convert the energy of a fluid in motion
US4447740A (en) * 1979-11-08 1984-05-08 Heck Louis J Wave responsive generator
US4462211A (en) * 1983-07-08 1984-07-31 Linderfelt Hal R Apparatus for harvesting wave energy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449740A (en) * 1974-03-27 1976-09-15 Babintsev I A Apparatus for converting sea wave energy into electrical energy
US4447740A (en) * 1979-11-08 1984-05-08 Heck Louis J Wave responsive generator
US4406586A (en) * 1980-11-13 1983-09-27 Roche Kerandraon Oliver Device to convert the energy of a fluid in motion
US4359868A (en) * 1981-06-10 1982-11-23 Slonim David Meir Ocean wave energy converter
US4462211A (en) * 1983-07-08 1984-07-31 Linderfelt Hal R Apparatus for harvesting wave energy

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