ES2621905T3 - Ring propeller with forward tilt - Google Patents
Ring propeller with forward tilt Download PDFInfo
- Publication number
- ES2621905T3 ES2621905T3 ES13753301.4T ES13753301T ES2621905T3 ES 2621905 T3 ES2621905 T3 ES 2621905T3 ES 13753301 T ES13753301 T ES 13753301T ES 2621905 T3 ES2621905 T3 ES 2621905T3
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- ring
- propeller
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- blade
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- 238000004804 winding Methods 0.000 claims description 3
- 239000003380 propellant Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/16—Propellers having a shrouding ring attached to blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/26—Blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2241/00—Design characteristics
- B63B2241/02—Design characterised by particular shapes
- B63B2241/10—Design characterised by particular shapes by particular three dimensional shapes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
- B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
- B63H2005/1258—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis with electric power transmission to propellers, i.e. with integrated electric propeller motors
Abstract
Una hélice de anillo (12) para un propulsor (10), donde la hélice de anillo (12) comprende un anillo (15), un elemento central (16) y al menos una paleta de la hélice (18) que se extiende entre y unida al elemento central (16) y al anillo (15), respectivamente, donde al menos una paleta de la hélice (18) tiene un perfil del borde delantero (19) y un perfil del borde trasero (20) en una sección transversal perpendicular al eje de rotación A de la hélice de anillo (12), la al menos una paleta de la hélice (18) se proporciona con inclinación hacia delante, caracterizada porque la parte más exterior de la paleta (18) alcanza primero las zonas con cambio de velocidad y en que el perfil del borde delantero (19) de la al menos una paleta de la hélice (18) tiene una forma de S con una forma cóncava en una porción en un punto de unión (37) al anillo (15) de manera que una tangente al perfil del borde delantero en el punto de unión al anillo que rodea la hélice de anillo y la tangente al anillo que la rodea en el mismo punto de unión forman un ángulo que es mayor que 0° y menor que 90°.A ring propeller (12) for a propeller (10), wherein the ring propeller (12) comprises a ring (15), a center member (16) and at least one blade of the propeller (18) extending between and attached to the central element (16) and to the ring (15), respectively, where at least one propeller blade (18) has a leading edge profile (19) and a trailing edge profile (20) in a cross section Perpendicular to the axis of rotation A of the ring propeller (12), the at least one blade of the propeller (18) is provided with a forward inclination, characterized in that the outermost part of the blade (18) first reaches the areas with speed change and in that the profile of the front edge (19) of the at least one propeller blade (18) has an S shape with a concave shape in a portion at a point of attachment (37) to the ring (15 ) so that a tangent to the leading edge profile at the point of attachment to the ring surrounding the ring helix and tangent to the ring surrounding it at the same junction point they form an angle that is greater than 0 ° and less than 90 °.
Description
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DESCRIPCIONDESCRIPTION
Helice de anillo con inclinacion hacia delanteRing propeller with forward tilt
La presente invencion se refiere a una helice de anillo y a un propulsor que comprende una helice de anillo que se acciona por un motor de iman permanente.The present invention relates to a ring helix and a propellant comprising a ring helix that is driven by a permanent magnet motor.
Este tipo de propulsor con una helice de anillo accionado por medio de un motor de iman permanente se emplea en diferentes tipos de embarcaciones. Sin embargo, las helices de anillo conocidas, accionadas por imanes permanentes, se han disenado sin mucha inclinacion.This type of propeller with a ring propeller driven by means of a permanent magnet motor is used in different types of boats. However, known ring helices, activated by permanent magnets, have been designed without much inclination.
El documento frances FR 68 426 E describe una helice de anillo para un propulsor que comprende un anillo, un elemento central y las paletas de la helice que se extienden entre el elemento central y el anillo. La Figura 1 de la publicacion indica que las paletas de la helice pueden proporcionarse con una inclinacion hacia delante aunque la descripcion no lo menciona. El borde delantero tiene una ligera protuberancia en el medio que es redonda, por ejemplo con una forma elfptica. De acuerdo con la descripcion, esta forma redonda de las paletas permite una entrada en el agua mejorada y aumenta el ancho de las paletas en la zona de la paleta de trabajo optimo. La forma redonda del borde delantero implica que una porcion medial de la paleta es la porcion de la paleta que primero alcanza el agua con cambio de velocidad, es decir la porcion del medio de la paleta alcanza las zonas en el agua con cambio de velocidad primero que la porcion exterior de la paleta.French document FR 68 426 E describes a ring propeller for a propeller comprising a ring, a central element and the propeller blades that extend between the central element and the ring. Figure 1 of the publication indicates that the propeller blades can be provided with an inclination forward although the description does not mention it. The leading edge has a slight protrusion in the middle that is round, for example with an elliptical shape. According to the description, this round shape of the pallets allows an improved entry into the water and increases the width of the pallets in the area of the optimum working pallet. The round shape of the leading edge implies that a medial portion of the paddle is the portion of the paddle that first reaches the water with change of speed, that is, the portion of the middle of the paddle reaches the areas in the water with change of speed first than the outer portion of the palette.
En el desarrollo de la presente helice de anillo y el propulsor que se acciona por un motor de iman permanente, un objetivo ha sido proporcionar un propulsor que se acciona por un iman permanente con mayor eficiencia que los propulsores conocidos.In the development of the present ring helix and the impeller that is driven by a permanent magnet motor, an objective has been to provide a propellant that is driven by a permanent magnet with greater efficiency than the known propellants.
Un objetivo adicional ha sido proporcionar un propulsor accionado por iman permanente con una helice de anillo que ofrece un mejor control de cuando se establece la cavitacion y de la extension de la cavitacion.An additional objective has been to provide a permanent magnet driven propeller with a ring helix that offers better control of when cavitation is established and the extent of cavitation.
Estos objetivos se consiguen con la presente helice de anillo tal como se define en la reivindicacion 1, un propulsor tal como se define en la reivindicacion 6 y una aplicacion de la helice de anillo tal como se define en la reivindicacion 7. Otras modalidades de la helice de anillo se definen en las reivindicaciones 2-5.These objectives are achieved with the present ring helix as defined in claim 1, a propeller as defined in claim 6 and an application of the ring helix as defined in claim 7. Other embodiments of the Ring helix are defined in claims 2-5.
Se proporciona una helice de anillo para un propulsor. La helice de anillo comprende un anillo, un elemento central y al menos una paleta de la helice que se extiende entre el elemento central y el anillo y se une al elemento central y al anillo. La paleta de la helice tiene un perfil del borde delantero y un perfil del borde trasero y se proporciona con inclinacion hacia delante. El perfil del borde delantero de la al menos una paleta de la helice, por otra parte, tiene una forma de S en seccion transversal perpendicular al eje de rotacion de la helice de anillo con una forma concava en una porcion en un punto de union al anillo de manera que una tangente al perfil del borde delantero en el punto de union al anillo que rodea la helice de anillo y la tangente al anillo que rodea en el mismo punto de union forman un angulo que es mayor que 0° y menor que 90°.A ring helix is provided for a propeller. The ring helix comprises a ring, a central element and at least one blade of the propeller that extends between the central element and the ring and joins the central element and the ring. The propeller blade has a front edge profile and a rear edge profile and is provided with forward inclination. The profile of the leading edge of the at least one blade of the propeller, on the other hand, has an S shape in cross section perpendicular to the axis of rotation of the ring propeller with a concave shape in a portion at a point of attachment to the ring so that a tangent to the profile of the leading edge at the point of attachment to the ring that surrounds the ring helix and the tangent to the ring that surrounds the same point of attachment form an angle that is greater than 0 ° and less than 90 °.
El al menos un perfil del borde trasero de la paleta de la helice tambien puede tener una forma de S en una seccion transversal perpendicular al eje de rotacion de la helice de anillo. La combinacion de la forma de S en el al menos un perfil del borde delantero de la paleta de la helice y posiblemente el perfil del borde trasero y la inclinacion hacia delante de la al menos una paleta de la helice proporcionan mejores condiciones de cavitacion, es decir cavitacion reducida.The at least one profile of the rear edge of the propeller blade can also have an S-shape in a cross section perpendicular to the axis of rotation of the ring propeller. The combination of the S-shape in the at least one profile of the front edge of the propeller blade and possibly the rear edge profile and the forward inclination of the at least one blade of the propeller provide better cavitation conditions, it is say reduced cavitation.
El borde delantero tiene un perfil del borde delantero visto en una seccion perpendicular al eje de rotacion de la helice de anillo. Correspondientemente, el borde trasero de las paletas de la helice, seran, naturalmente, el borde en el lado opuesto de la paleta de la helice con un perfil del borde trasero visto en una seccion perpendicular al eje de rotacion de la helice de anillo. El hecho de que las paletas de la helice de anillo tienen una inclinacion hacia delante significa que la punta de la helice, que se une al anillo, se inclina hacia delante hacia la direccion de rotacion normal de la helice, con el resultado de que la parte mas exterior de la paleta alcance primero las zonas con velocidad alterada. En relacion con la inclinacion hacia delante de las paletas de la helice, puede definirse un angulo de inclinacion. El angulo de inclinacion es el angulo mas grande posible, visto en una seccion transversal perpendicular al eje de rotacion de la helice de anillo, medido entre la lmea recta trazada desde el punto donde la cuerda central/lmea de inclinacion de la paleta de la helice alcanza el anillo que rodea la helice de anillo y el eje de rotacion y una lmea tangencial a un punto en la cuerda central de la paleta de la helice y el eje de rotacion. La cuerda central de la paleta de la helice y el angulo de inclinacion de una paleta de la helice en la presente helice de anillo se muestran en las figuras adjuntas.The leading edge has a profile of the leading edge seen in a section perpendicular to the axis of rotation of the ring helix. Correspondingly, the rear edge of the propeller blades will, of course, be the edge on the opposite side of the propeller blade with a profile of the rear edge seen in a section perpendicular to the axis of rotation of the ring propeller. The fact that the ring propeller blades have an inclination forward means that the tip of the propeller, which joins the ring, tilts forward towards the direction of normal rotation of the propeller, with the result that the outermost part of the pallet first reach areas with altered speed. In relation to the forward inclination of the propeller blades, an angle of inclination can be defined. The angle of inclination is the largest possible angle, seen in a cross section perpendicular to the axis of rotation of the ring propeller, measured between the straight line drawn from the point where the central rope / tilt line of the propeller blade it reaches the ring that surrounds the ring propeller and the axis of rotation and a tangential line to a point on the central rope of the propeller blade and the axis of rotation. The central rope of the propeller blade and the angle of inclination of a propeller blade in the present ring propeller are shown in the attached figures.
En una modalidad de la invencion el perfil en forma de S del borde trasero tambien puede tener una forma concava en una porcion en el punto de union al anillo. De la misma manera que anteriormente, esto significa que la tangente al perfil del borde trasero en el punto de union al anillo que rodea la helice de anillo y la tangente al anillo que lo rodea en el mismo punto de union forman un angulo que es mayor que 0° y menor que 90°.In one embodiment of the invention, the S-shaped profile of the rear edge may also have a concave shape in a portion at the point of attachment to the ring. In the same way as before, this means that the tangent to the profile of the rear edge at the point of union to the ring that surrounds the ring helix and the tangent to the ring that surrounds it at the same point of union form an angle that is greater than 0 ° and less than 90 °.
Con respecto a la resistencia de las paletas, se les ha dado una forma preferentemente engrosada (un filete) en la transicion hacia el anillo de la helice. Mediante el empleo de una forma concava en la parte mas exterior de las paletas,With respect to the resistance of the blades, they have been given a preferentially thickened shape (a fillet) in the transition to the helix ring. By using a concave shape on the outermost part of the pallets,
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se proporciona el espacio para un filete mas delgado y de esta manera mejores condiciones hidrodinamicas en la parte mas exterior de la helice.space is provided for a thinner steak and thus better hydrodynamic conditions in the outermost part of the propeller.
En una modalidad de la presente invencion el anillo de la helice de anillo preferentemente se proporciona con imanes permanentes, donde los imanes permanentes forman una parte de un motor de iman permanente cuando la helice de anillo se monta en el propulsor.In one embodiment of the present invention the ring helix ring is preferably provided with permanent magnets, where the permanent magnets form a part of a permanent magnet motor when the ring helix is mounted on the propeller.
Tambien se proporciona un propulsor que comprende una helice de anillo y un motor de iman permanente. El propulsor comprende una helice de anillo como se describio anteriormente y una carcasa del propulsor que encierra el anillo de la helice de anillo y comprende los embobinados del estator del motor de iman permanente. De esta manera se proporciona un motor de iman permanente para accionar la helice de anillo. La helice de anillo del propulsor de cualquier otra manera se disena preferentemente como se describio anteriormente y puede usarse en un embarcacion ventajosamente.A propeller is also provided comprising a ring propeller and a permanent magnet motor. The propeller comprises a ring helix as described above and a propeller housing that encloses the ring of the ring helix and comprises the windings of the permanent magnet motor stator. In this way a permanent magnet motor is provided to drive the ring propeller. The propeller ring propeller in any other way is preferably designed as described above and can be used advantageously in a vessel.
Una modalidad no limitante de la invencion se describira ahora con referencia a las figuras, en las que:A non-limiting embodiment of the invention will now be described with reference to the figures, in which:
La Figura 1 es una seccion transversal de un propulsor con una helice de anillo de acuerdo con la presente invencion perpendicular al eje de rotacion de la helice de anillo A.Figure 1 is a cross section of a propeller with a ring helix in accordance with the present invention perpendicular to the axis of rotation of the ring helix A.
La Figura 2 ilustra la misma figura que anteriormente, pero donde se indican los angulos entre el anillo y el perfil del borde delantero y el perfil del borde trasero, respectivamente.Figure 2 illustrates the same figure as above, but where the angles between the ring and the profile of the leading edge and the profile of the leading edge are indicated, respectively.
La Figura 1 ilustra un propulsor 10 de acuerdo con la presente invencion. El propulsor 10 comprende una carcasa del propulsor 13 y una helice de anillo 12 que puede montarse de forma giratoria en la carcasa del propulsor 13 alrededor del eje de rotacion A. La helice de anillo 12 comprende un anillo 15 y un elemento central 16.Entre el anillo 15 y el elemento central 16 preferentemente se montan una serie de paletas de la helice 18, que se unen al elemento central 16 y al anillo 15.Por lo tanto, la helice de anillo 12 es un monobloque, donde las paletas de la helice 18 tienen inclinacion fija. El propulsor 10 se dispone para unirse a un embarcacion (no mostrada en las figuras).Para ello, el propulsor 10 puede proporcionarse con un elemento de union 17, lo que permite de esta manera que el propulsor 10, por ejemplo, se atornille, enrosque o suelde a la embarcacion.Figure 1 illustrates a propellant 10 in accordance with the present invention. The propeller 10 comprises a propeller housing 13 and a ring propeller 12 that can be rotatably mounted on the propeller housing 13 about the rotation axis A. The ring propeller 12 comprises a ring 15 and a central element 16. Between the ring 15 and the central element 16 preferably are mounted a series of blades of the propeller 18, which are attached to the central element 16 and the ring 15. Therefore, the ring helix 12 is a monobloc, where the vanes of the helix 18 have fixed inclination. The propeller 10 is arranged to be attached to a vessel (not shown in the figures) .To do this, the propeller 10 can be provided with a connecting element 17, thereby allowing the propeller 10, for example, to be screwed, screw or weld to the boat.
La helice de anillo 12 comprende ademas imanes permanentes (no mostrados en las figuras) que preferentemente se montan en el anillo 15.En la carcasa del propulsor 13 los embobinados del estator (no mostrados en la figura) se proporcionan de manera similar, con el resultado de que la helice de anillo se acciona por un motor de iman permanente. La energfa electrica para el motor de iman permanente puede, por ejemplo, suministrarse a traves del elemento de union 17.The ring helix 12 also comprises permanent magnets (not shown in the figures) that are preferably mounted on the ring 15. In the propeller housing 13 the stator windings (not shown in the figure) are similarly provided, with the The result is that the ring helix is driven by a permanent magnet motor. The electric energy for the permanent magnet motor can, for example, be supplied through the joint element 17.
Las paletas de la helice 18 tienen un perfil del borde delantero 19 y un perfil del borde trasero 20 en una seccion perpendicular al eje de rotacion A de la helice de anillo 12, como se indica en la figura 1.El perfil del borde delantero 19 y el perfil del borde trasero 20 se definen en relacion con la direccion de rotacion R de la helice de anillo 12, como se ilustra en la figura 1.The blades of the propeller 18 have a profile of the leading edge 19 and a profile of the trailing edge 20 in a section perpendicular to the axis of rotation A of the ring propeller 12, as indicated in Figure 1. The profile of the leading edge 19 and the profile of the rear edge 20 is defined in relation to the direction of rotation R of the ring helix 12, as illustrated in Figure 1.
Las paletas de la helice 18 tienen una cuerda central imaginaria 24 que se extiende desde el elemento central 16 a un punto 27, donde la lmea central intersecta al anillo 15.La cuerda central 24 es la lmea imaginaria situada a la misma distancia desde el perfil del borde delantero 19 como desde el perfil del borde trasero 20 en la paleta de la helice 18.The blades of the propeller 18 have an imaginary central rope 24 extending from the central element 16 to a point 27, where the central line intersects the ring 15. The central rope 24 is the imaginary line located at the same distance from the profile of the leading edge 19 as from the profile of the trailing edge 20 in the propeller blade 18.
Como se indica en las figuras, la helice se disena con inclinacion hacia delante, es decir las paletas de la helice 18 se inclinan hacia delante en la direccion de rotacion normal R de la helice, con el resultado de que la parte mas exterior de la paleta alcanza primero las zonas con cambio de velocidad. El grado de inclinacion hacia delante puede indicarse por medio del angulo de inclinacion V. El angulo de inclinacion V es el mayor angulo formado entre una primera lmea 25 a traves del eje de rotacion A y un punto 27 donde la lmea central 24 atraviesa el diametro interno del anillo 15 y una segunda lmea 26 a traves del eje de rotacion A y un punto 28 en la lmea central 24.Dependiendo del grado de inclinacion hacia delante de la paleta de la helice, el punto 28 en la lmea central puede variar. En la figura 1 el punto 28 en la lmea central 24 que le dara al angulo mas grande, es decir el angulo de inclinacion V, esta justo en el elemento central 16.En otros disenos el punto 28 puede situarse en algun lugar en la lmea central entre el elemento central 16 y el anillo 15.Al proporcionar la helice de anillo 12 con inclinacion hacia delante de esta manera, la helice de anillo 12 adquirira mejores propiedades de cavitacion ya que la punta de las paletas de la helice 18 toma una parte mas pequena del total del propulsor.As indicated in the figures, the propeller is designed with an inclination forward, that is to say the propeller blades 18 lean forward in the normal direction of rotation R of the propeller, with the result that the outermost part of the palette first reaches the zones with change of speed. The degree of inclination forward can be indicated by the angle of inclination V. The angle of inclination V is the greatest angle formed between a first line 25 through the axis of rotation A and a point 27 where the central line 24 crosses the diameter internal of the ring 15 and a second line 26 through the axis of rotation A and a point 28 in the central line 24. Depending on the degree of forward inclination of the blade of the propeller, the point 28 in the central line may vary. In figure 1, point 28 in the central line 24 that will give the largest angle, that is, the angle of inclination V, is right in the central element 16. In other designs, point 28 may be located somewhere in the line. center between the central element 16 and the ring 15. By providing the ring helix 12 with forward inclination in this manner, the ring helix 12 will acquire better cavitation properties since the tip of the propeller blades 18 takes a part smaller than the total of the propeller.
Como se ilustra en las figuras el perfil del borde delantero 19 de las paletas de la helice 18 se disena con una ligera forma de S. Esto significa que en la transicion hacia el anillo 15, sera posible disenar las paletas de la helice 18 con una delgada seccion, dando un buen efecto hidrodinamico, mientras que al mismotiempo proporciona suficiente resistencia. El perfil del borde trasero tambien puede disenarse con una ligera forma de S, como se indica en las figuras.As illustrated in the figures, the profile of the leading edge 19 of the blades of the propeller 18 is designed with a slight S-shape. This means that in the transition to the ring 15, it will be possible to design the blades of the propeller 18 with a thin section, giving a good hydrodynamic effect, while at the same time providing enough resistance. The rear edge profile can also be designed with a slight S-shape, as indicated in the figures.
En la transicion entre perfil del borde delantero 19 de las paletas de la helice y el anillo 15, las paletas de la helice 18 preferentemente tienen una forma concava. Esto se ilustra en mayor detalle en la figura 2 donde se indican la tangenteIn the transition between profile of the leading edge 19 of the propeller blades and the ring 15, the propeller blades 18 preferably have a concave shape. This is illustrated in greater detail in Figure 2 where the tangent is indicated.
30 al perfil del borde delantero 19 de la paleta de la helice en el punto de union 37 y la tangente 31 al anillo 15 en el punto de union 37 al anillo. Debido al hecho de que las paletas de la helice 18 tienen una forma concava, el angulo 35 de abertura en el anillo es menor que 90° y mayor que 0°.30 to the profile of the leading edge 19 of the propeller blade at the junction point 37 and the tangent 31 to the ring 15 at the junction point 37 to the ring. Due to the fact that the propeller blades 18 have a concave shape, the opening angle 35 in the ring is less than 90 ° and greater than 0 °.
5 De una manera similar, en la transicion entre el borde trasero 19 de las paletas de la helice y el anillo 15, las paletas de la helice 18 preferentemente tienen una forma concava. Esto tambien se ilustra en la figura 2 donde se indican la tangente 32 al perfil del borde trasero 20 a la paleta de la helice en el punto de union 38 y la tangente 33 al punto de union 38 al anillo 15.Debido al hecho de que las paletas de la helice 18 tienen una forma concava, el angulo 36 de abertura en el anillo es tambien menor que 90° y mayor que 0°.5 Similarly, in the transition between the rear edge 19 of the propeller blades and the ring 15, the propeller blades 18 preferably have a concave shape. This is also illustrated in Figure 2 where the tangent 32 is indicated to the profile of the rear edge 20 to the propeller blade at the junction point 38 and the tangent 33 to the attachment point 38 to the ring 15. Due to the fact that The propeller blades 18 have a concave shape, the opening angle 36 in the ring is also less than 90 ° and greater than 0 °.
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Claims (7)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20120899A NO335877B1 (en) | 2012-08-14 | 2012-08-14 | Ring propeller with forward twist |
| NO20120899 | 2012-08-14 | ||
| PCT/EP2013/066925 WO2014026993A1 (en) | 2012-08-14 | 2013-08-13 | Ring propeller with forward screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2621905T3 true ES2621905T3 (en) | 2017-07-05 |
Family
ID=49036571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES13753301.4T Active ES2621905T3 (en) | 2012-08-14 | 2013-08-13 | Ring propeller with forward tilt |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US20150210370A1 (en) |
| EP (1) | EP2885203B1 (en) |
| JP (1) | JP6158331B2 (en) |
| KR (1) | KR102112493B1 (en) |
| BR (1) | BR112015003246A2 (en) |
| DK (1) | DK2885203T3 (en) |
| ES (1) | ES2621905T3 (en) |
| HK (1) | HK1209708A1 (en) |
| HR (1) | HRP20170565T1 (en) |
| NO (1) | NO335877B1 (en) |
| PL (1) | PL2885203T3 (en) |
| PT (1) | PT2885203T (en) |
| RU (1) | RU2628625C2 (en) |
| WO (1) | WO2014026993A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9849968B2 (en) | 2014-12-04 | 2017-12-26 | Northrop Grumman Systems Corporation | Propeller |
| JP1562438S (en) * | 2016-02-19 | 2016-11-07 | ||
| US10773817B1 (en) | 2018-03-08 | 2020-09-15 | Northrop Grumman Systems Corporation | Bi-directional flow ram air system for an aircraft |
| SE544385C2 (en) * | 2019-09-23 | 2022-05-03 | Volvo Penta Corp | Propeller combination for a marine vessel |
| AU2021246540A1 (en) * | 2020-04-02 | 2022-12-08 | Open Inductions Pty Ltd | Fluid drawing induction motor |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB210841A (en) * | 1922-11-03 | 1924-02-04 | James Herbert Wainwright Gill | Improvements in or relating to screw propellers or the like |
| US1518501A (en) * | 1923-07-24 | 1924-12-09 | Gill Propeller Company Ltd | Screw propeller or the like |
| US1808032A (en) * | 1924-01-22 | 1931-06-02 | Gebers Friedrich | Out of water propeller |
| US1895252A (en) * | 1931-01-23 | 1933-01-24 | Emmanuel G Kontos | Propeller |
| US2270615A (en) * | 1940-10-11 | 1942-01-20 | Edward E Baldwin | Propeller |
| FR68426E (en) * | 1955-01-25 | 1958-04-30 | Marine propeller | |
| US3826591A (en) * | 1971-06-02 | 1974-07-30 | E Wilson | Centrifugal marine propeller |
| FR2315001A1 (en) * | 1975-06-18 | 1977-01-14 | Entat Marcel | PROCESS FOR REALIZING PROPELLER BLADES AND IMPROVED PROPELLER BLADES OBTAINED BY IMPLEMENTING THIS PROCESS |
| US4358245A (en) * | 1980-09-18 | 1982-11-09 | Bolt Beranek And Newman Inc. | Low noise fan |
| JPS5996091A (en) * | 1982-11-22 | 1984-06-02 | Mitsubishi Heavy Ind Ltd | Skewed propeller |
| DE3246730A1 (en) * | 1982-12-17 | 1984-06-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | ELECTRICALLY DRIVEN SCREW |
| JPS59179293U (en) * | 1983-05-18 | 1984-11-30 | 石川島播磨重工業株式会社 | propeller device |
| FR2603953B1 (en) * | 1986-09-12 | 1991-02-22 | Peugeot Aciers Et Outillage | PROPELLER BLADE AND ITS APPLICATION TO MOTOR FANS |
| US5064345A (en) * | 1989-11-16 | 1991-11-12 | Airflow Research And Manufacturing Corporation | Multi-sweep blade with abrupt sweep transition |
| IT1241368B (en) * | 1990-12-21 | 1994-01-10 | Fiatgeotech | AXIAL FAN, PARTICULARLY FOR AGRICULTURAL VEHICLES. |
| US5273400A (en) * | 1992-02-18 | 1993-12-28 | Carrier Corporation | Axial flow fan and fan orifice |
| US5393199A (en) * | 1992-07-22 | 1995-02-28 | Valeo Thermique Moteur | Fan having a blade structure for reducing noise |
| US5306183A (en) * | 1993-02-25 | 1994-04-26 | Harbor Branch Oceanographic Institute Inc. | Propulsion systems for submarine vessels |
| US5513951A (en) * | 1993-03-29 | 1996-05-07 | Nippondenso Co., Ltd. | Blower device |
| US5996685A (en) * | 1995-08-03 | 1999-12-07 | Valeo Thermique Moteur | Axial flow fan |
| US5906179A (en) * | 1997-06-27 | 1999-05-25 | Siemens Canada Limited | High efficiency, low solidity, low weight, axial flow fan |
| US5967749A (en) * | 1998-01-08 | 1999-10-19 | Electric Boat Corporation | Controllable pitch propeller arrangement |
| ITTO980276A1 (en) * | 1998-03-30 | 1999-09-30 | Gate Spa | AXIAL FAN, PARTICULARLY FOR MOTOR VEHICLES. |
| KR100332539B1 (en) * | 1998-12-31 | 2002-04-13 | 신영주 | Axial flow fan |
| KR100820857B1 (en) * | 2003-03-05 | 2008-04-10 | 한라공조주식회사 | Axial Flow Fan |
| KR101018925B1 (en) * | 2004-03-19 | 2011-03-02 | 한라공조주식회사 | Axial flow fan |
| EP1773653A1 (en) * | 2004-07-01 | 2007-04-18 | Ringprop Trading Limited | Shroud or ring propeller blade interface |
| ES2444512T3 (en) * | 2005-11-01 | 2014-02-25 | Kabushiki Kaisha Bellsion | Silent propeller |
| GB2482689A (en) * | 2010-08-10 | 2012-02-15 | Rolls Royce Plc | Rotor structure of dynamo-electric machine |
| US8299669B2 (en) * | 2010-10-18 | 2012-10-30 | Hamilton Sundstrand Corporation | Rim driven thruster having transverse flux motor |
| RU118939U1 (en) * | 2012-03-22 | 2012-08-10 | Андрей Александрович Тарасенко | REVERSIBLE EQUIPPED ROWING SCREW |
-
2012
- 2012-08-14 NO NO20120899A patent/NO335877B1/en unknown
-
2013
- 2013-08-13 US US14/420,398 patent/US20150210370A1/en not_active Abandoned
- 2013-08-13 BR BR112015003246A patent/BR112015003246A2/en not_active Application Discontinuation
- 2013-08-13 RU RU2015106853A patent/RU2628625C2/en active
- 2013-08-13 PL PL13753301T patent/PL2885203T3/en unknown
- 2013-08-13 ES ES13753301.4T patent/ES2621905T3/en active Active
- 2013-08-13 JP JP2015526969A patent/JP6158331B2/en active Active
- 2013-08-13 EP EP13753301.4A patent/EP2885203B1/en active Active
- 2013-08-13 DK DK13753301.4T patent/DK2885203T3/en active
- 2013-08-13 KR KR1020157006541A patent/KR102112493B1/en active IP Right Grant
- 2013-08-13 WO PCT/EP2013/066925 patent/WO2014026993A1/en active Application Filing
- 2013-08-13 PT PT137533014T patent/PT2885203T/en unknown
-
2015
- 2015-10-22 HK HK15110357.9A patent/HK1209708A1/en unknown
-
2017
- 2017-04-10 HR HRP20170565TT patent/HRP20170565T1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US20150210370A1 (en) | 2015-07-30 |
| EP2885203B1 (en) | 2017-02-15 |
| EP2885203A1 (en) | 2015-06-24 |
| BR112015003246A2 (en) | 2017-07-04 |
| NO335877B1 (en) | 2015-03-16 |
| RU2628625C2 (en) | 2017-08-21 |
| RU2015106853A (en) | 2016-10-10 |
| DK2885203T3 (en) | 2017-05-01 |
| KR102112493B1 (en) | 2020-05-19 |
| WO2014026993A1 (en) | 2014-02-20 |
| JP2015524771A (en) | 2015-08-27 |
| PL2885203T3 (en) | 2017-07-31 |
| HK1209708A1 (en) | 2016-04-08 |
| KR20150043467A (en) | 2015-04-22 |
| NO20120899A1 (en) | 2014-02-17 |
| HRP20170565T1 (en) | 2017-06-30 |
| PT2885203T (en) | 2017-04-24 |
| JP6158331B2 (en) | 2017-07-05 |
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