KR20110097910A - Ship propulsion system having a pump jet - Google Patents

Abstract

The invention relates to a ship propulsion system (S) with a pump jet (P), comprising a pump housing (G) and a drive motor, wherein the rotor (2) of the impeller of the pump jet (P) is a pump jet (P). It has a rotation axis (B) that is not aligned with the control axis (A) of.

Description

Ship propulsion system with a pump jet {SHIP PROPULSION SYSTEM HAVING A PUMP JET}

The present invention relates to a marine propulsion system with a pump jet according to EP 0 612 657.

Ship propulsion systems of this kind are known in the art and include pump jets as primary and / or secondary drive. For example, energy is supplied by a gear system comprising a preferred diesel, electric or hydraulic motor connected directly to or in front of the impeller shaft by a motor arranged outside of the drive. The electric motor used is a conventional electric motor.

Although such marine propulsion systems have a particularly preferred shape, the present invention implements and has further improvements, in particular to simplify the structure and efficiency of the drive arrangement and to widen the range of possible applications.

For this purpose, the present invention manufactures a ship propulsion system with a pump jet, comprising a pump housing and a drive motor, wherein the rotor of the impeller of the pump jet comprises an axis of rotation which is not aligned with the control axis of the pump jet.

The invention is preferably further refined, in which the axis of rotation of the rotor is offset with respect to the control axis of the pump jet, and moreover preferably the control axis of the pump jet and the axis of rotation of the rotor are parallel. Alternatively or in addition, preferably the control axis of the pump jet and the axis of rotation of the rotor are inclined mutually, and in addition the axis of rotation of the rotor and the control axis of the pump jet intersect at one point in particular.

In addition, it is possible to provide a drive motor which is an electric motor arranged on or partially integrated within the pump housing.

This design is preferably further refined, wherein the electric motor is an asynchronous motor, a synchronous motor or a permanent magnet motor and / or is provided between the electric motor and components that transmit force to the impeller, such as teeth, roller bearings and / or shafts. do.

A further preferred embodiment is where the drive motor is a magnet motor integrated in the pump housing.

Alternatively, the present invention manufactures a ship propulsion system with a pump jet, including a pump housing and a drive motor, wherein the drive motor is a high temperature superconductor motor integrally formed within the pump housing.

Preferably, the pump jet is entirely controllable.

In addition, it is preferred to provide a high temperature superconductor motor or a magnet motor comprising a rotor which is part of the impeller of the pump jet.

According to a further preferred embodiment, the magnet motor or the high temperature superconductor motor comprises a stator which is part of the diffuser inner ring of the pump jet.

According to another preferred embodiment, the conveying medium is in particular also used per se as a lubricant and / or a coolant.

According to a further preferred embodiment, the drive of the pump jet is free of force transmission components such as teeth, roller bearings and / or shafts.

According to a further preferred embodiment, the deflection device is provided to be arranged in and / or designed in the interior space of the diffuser housing.

Preferably, the deflecting device is arranged and / or designed to remove turbulence from the water flow in the interior space of the diffuser housing and / or to flow as much water through the nozzle of the pump jet as possible without internal turbulence. And to discharge through the individual nozzles the preferred amount of water per unit time, particularly as much as possible without internal turbulence and / or the same amount of water per unit time, to guide the pump jet or to achieve an optimum thrust effect of the pump jet. And / or designed. Additionally or alternatively, the deflection device preferably comprises at least one shape of the inner space of the diffuser housing. As a further preferred design, the deflection device thus has an area comprising a constant cross-sectional profile of the inner space of the diffuser housing and / or the deflection device has an area comprising a reduced cross-sectional profile of the inner space of the diffuser housing and / or Or the deflection device has an area comprising an extended cross-sectional profile of the diffuser housing. In addition, the deflection device may alternatively or additionally comprise one or more guide vanes in the interior space of the diffuser.

Further preferred and / or preferred embodiments of the invention are apparent from both the claims and combinations thereof as well as from the permissible patent literature.

The invention is explained in more detail below using only the examples according to the drawings as examples.

1 is an exemplary cross sectional view of a first embodiment of a ship propulsion system including a pump jet;
2 is an exemplary perspective view of a marine propulsion system including a pump jet in a first embodiment;
3 is a view of a ship propulsion system comprising the pump jet of the first embodiment, in the case of a pump jet attached to the hull of the ship when viewed towards the hull;
4 is an exemplary view of a ship propulsion system comprising the pump jet of the first embodiment from the inside to the outside, in the case of a pump jet attached to the hull of the ship, viewed in a direction away from the hull;
5 is an exemplary view of a second embodiment of a ship propulsion system including a pump jet.
6 is an exemplary view of a third embodiment of a ship propulsion system including a pump jet.

According to the embodiments and application embodiments described below and shown in the drawings, the present invention is described in more detail by way of example only, that is, the present invention provides the above embodiments and application embodiments, or It is not limited to the feature combinations presented in the embodiments. The features of the method and apparatus are similarly presented from the description of the apparatus and method, respectively.

The individual features specified and / or shown in connection with specific embodiments are not limited to the above embodiments or combinations of the remaining features of the embodiments, but within the scope of the technical possibilities, although each further variant may be used herein. Although not separately mentioned, they may be combined with the variants.

The same reference numerals as those shown in the individual figures and illustrations in the figures represent the same or similar parts, or the same or similarly acting parts. According to the schematics shown in the drawings, the above-mentioned features without reference numerals may be clearly applied to the present specification regardless of whether or not described below. In addition, other features that are included in the present specification but not identified or shown in the drawings are immediately understood by those skilled in the art.

1 is a longitudinal cross-sectional view of a ship propulsion system S including a pump jet P. FIG. The pump jet P is a drive motor comprising a stator 1 and a rotor 2 and includes a magnet motor M integrally formed in the flow housing or the pump housing G. The rotor 2 is formed like an impeller outer ring I and the stator 1 is integrated in the diffuser inner ring D of the pump housing G which receives the diffuser housing 3. It is constructed or so integrally designed. The pump jet P is also provided with a control transmitter 4, a control drive 5, for example a spur wheel R, as well as a receiver transmitter 6 and a wall plate. plate, 7).

2 is an exemplary perspective view of a ship propulsion system S comprising a pump jet P of the first embodiment. FIG. 3 is an exemplary view from below showing a ship propulsion system S comprising a pump jet P of the first embodiment, ie the pump jet is viewed in a direction towards the hull of the ship. Is attached to. 4 is an exemplary view of the ship propulsion system S including the pump jet P of the first embodiment from the inside toward the outside, ie in this case the pump jet is viewed in a direction away from the hull of the ship Is attached on the hull of the.

In particular, the ship propulsion system S is comprehensively controllable and its pump jet P is mounted to rotate 360 °.

In addition to the pump jet P being driven by a magnet motor M integrally configured in the pump housing G, a high temperature superconducting or HTSL motor (not shown separately) may be provided for driving, in each case The rotor 2 is a part of the impeller I, and the stator 1 is an integral part of the diffuser inner ring D. As shown in FIG. Thus, there is no need to use the conventional type of force transmission by the drive motor, gear system and articulated shaft. Thus, a fairly compact drive unit is manufactured that can be mounted in most floating devices.

Since the pump jet P is driven using the magnet motor M or the HTSL motor, no drive gear parts such as teeth, shafts or roller bearings are required. In conclusion, this can be classified as a motor in which the pump jet P exhibits high efficiency as well as very low noise and vibration. In addition, no oil filling is required for lubrication and cooling of the rotating part, which makes the pump jet P an oil-free and low maintenance unit.

The specific consequent advantage is

Compact design,

-High efficiency,

Extremely low noise,

Low vibration,

Oil-free,

Includes low maintenance costs.

The pump housing G comprising or integrally designed with the diffuser housing 2 is preferably 360 ° around the control axis A in the bearing 8 with respect to the wall plate 7 by the control motor 4. Can be rotated, so that the nozzles 9 can be controlled in the preferred direction, and only one central nozzle (shown in FIGS. 2, 3 and 4) of the three nozzles 9a, 9b, 9c (shown in FIGS. Only 9b) may be shown in cross section in FIG. 1.

Water is sucked by the rotor 2 into the inner space 11 of the diffuser housing 3 through the inlet 10. The jet of water flowing into the inner space 11 of the diffuser housing 3 is thus diverted due to the shape of the inner space 11 of the diffuser housing 3, whereby the jet of water is transferred by the control motor 4. According to the adjusted rotational position, it is discharged from the pump housing G through the nozzle 9 in the preferred direction.

Due to the shape of the inner space 11 of the diffuser housing 3, a deflection of the flow of water flowing through the inlet 10 into the inner space 11 of the diffuser housing 3 is realized, and accordingly the diffuser housing 3 Or pump housing G is a deflection housing at the same time. The shape of the first embodiment shown in FIG. 1 is a drive motor including a runner or rotor 2, such as an impeller outer ring I, and a stator 1 in the diffuser inner ring D of the pump housing G. It is the surrounding bead type. Thus, the inner space 11 of the diffuser or deflection housing 3 having this particular shape represents a deflection device 12.

As a guide vane 13 is provided as a component of the deflection device 12, it further affects the flow of water sucked by the nozzle 9 through the inlet 10 as shown in FIG. 4. . Depending on the rest of the shape of the deflection device 12, several and / or differently arranged and designed guide vanes may be provided.

The guide vanes, like the guide vanes 13, are discharged through the individual nozzles 9a, 9b, 9c in each case to the extent that, for example, the required amount of water per unit time or usually equal amounts are free of internal turbulence. To provide a function of "turbulence removal" and to direct the flow of water according to the deflector 12, so that the optimum thrust effect of the pump jet P is achieved, and to the rapidly rotating rotor 2 This is to direct the water which is formed by the turbulence and which flows in or is sucked through the inner space 11 of the diffuser housing or the deflection housing 3.

According to the invention, although not shown in the drawing selected for FIG. 1, the rotor 2 is provided with a rotation axis B which is offset with respect to the control axis A of the pump jet P, specifically the rotation axis ( B) is offset towards the rear with respect to the plane of the figure in which the control axis A is located, further spaced from the viewer. However, this type of offset is clearly visible and perceivable in the second embodiment according to FIG. 5.

FIG. 5 shows a second embodiment of a ship propulsion system S comprising a pump jet P which is a view similar to FIG. 1. In order to avoid repetition of all parts, arrangements and effects, reference is made to the description of the first embodiment according to FIGS. 1 to 4.

Unlike the first embodiment, in the second embodiment the rotor 2 is provided with a rotation axis B which is offset with respect to the control axis A of the pump jet P. However, the rotation axis B of the rotor 2 and the control axis A of the pump jet P are oriented parallel to each other.

Furthermore, in the second embodiment according to FIG. 5, the deflection device 12 formed in the form of a pump housing G or a diffuser or deflection housing 3 inner space 11 is in contrast to the first embodiment according to FIG. 1. As such, they are not formed in the same shape around the rotor 2. The deflection device 12 has a region 12b comprising a relatively wide cross-sectional profile and a region 12a comprising a relatively narrow cross-sectional profile, but in the first embodiment according to FIG. 1 the cross-sectional profile of the entire region 12c is constant. Is formed. The cross section in which the size is increased towards the nozzle 9 according to the region 12b in the second embodiment according to FIG. 5 with respect to the cross section in the region 12a has, for example, a dispersion effect or a diffuser effect.

In particular, as the control axis A of the pump jet P and the rotational axis B of the rotor 2 or impeller I are offset, the shape of the deflecting device 12 is relatively large in cross-sectional area 12b. And a relatively narrow cross-sectional area 12a. However, the two features, the offset of the axes, the irregular shape of the deflection device 12 in the pump housing G or the inner space 11 of the diffuser or deflection housing 3 need not be combined.

In FIG. 6, which is a view similar to FIGS. 1 and 5, a third embodiment of a ship propulsion system S comprising a pump jet P is shown. In order to avoid repetition of all parts, arrangements and effects, reference is made to the description of the first embodiment according to FIGS. 1 to 4. Unlike the first embodiment, in the third embodiment the rotor 2 has a rotation axis B inclined with respect to the control axis A of the pump jet P. However, the axis of rotation B of the rotor 2 and the control axis A of the pump jet P intersect at the point Z.

In addition, in the second embodiment according to FIG. 5 as well as in the second embodiment according to FIG. 5, a deflection device formed by the pump housing G or in the form of the inner space 11 of the diffuser housing or the deflection housing 3. Reference numeral 12 does not show the same shape around the rotor 2 in contrast to the first embodiment according to Fig. 1 due to the inclined position of the rotor. As in the second embodiment according to FIG. 5, the deflection device 12 has an area 12b comprising a relatively wide cross-sectional profile and an area 12a comprising a relatively narrow cross-sectional profile, but as described above in FIG. 1. In the first embodiment according to the cross-sectional profile in the whole area 12c is formed constant. With respect to the cross section in the region 12a, in the second embodiment according to FIG. 6 the cross section in which the size is increased towards the nozzle 9 according to the region 12b has, for example, a dispersion effect or a diffuser effect.

In particular, as the axis of rotation B of the rotor 2 or the impeller I is inclined with respect to the control axis A of the pump jet P, the shape of the deflection device 12 has a relatively wide cross-sectional profile. Region 12b and region 12a having a relatively narrow cross-sectional profile. However, in the shape according to the third embodiment shown in FIG. 6, the regions 12a, 12b are the beads of the pump housing G or the diffuser or deflection housing 3 as in the case of the second embodiment according to FIG. 5. Or in the peripheral region of the inner space 11 in the form of a ring.

In addition, in the third embodiment shown in FIG. 6, essentially, the irregular shape of the deflection device in the inner space of the pump housing P or in the inner space 11 of the diffuser housing or the deflection housing 3 and There is no need to combine the tilts of the axes towards each other.

In addition, a feature in which the control axis A of the pump jet P and the rotation axis B of the rotor 2 or impeller I are not aligned or in other words superimposed or not overlapping can be considered as a standalone invention and Independently of the shape of the ship propulsion system S with a pump jet P comprising a drive engine and a pump housing G, it is of value for patent protection on its own, where the drive engine is in the pump housing G. It is an integrated high temperature superconductor motor or magnet motor (M). The unaligned arrangement of the control axis A of the pump jet P and the rotation axis B of the rotor 2 or the impeller I is typically applicable to the technical content including the embodiment according to FIGS. 5 and 6. In the second embodiment, the rotor 2 is provided with an axis of rotation B inclined with respect to the control axis A of the pump jet P or in the third embodiment the rotor 2 is a pump jet P. Has a rotation axis B inclined with respect to the control axis A of, and is not particularly essential, but here the rotation axis B of the rotor 2 and the control axis A of the pump jet P are at one point Z. To cross.

In contrast to the above-described embodiment, instead of the magnet motor M or the HTSC motor, for example, in particular an asynchronous motor, a synchronous motor or a permanent magnet motor, which are arranged on or partially integrated in the pump housing G, The same electric motor E can be used as an alternative. This electric motor E is shown only in dashed lines in FIGS. 5 and 6 according to the second and third embodiments for clarity.

If such an electric motor E is provided, the magnet motor M or the HTSL motor provided in the first embodiment according to FIG. 1 can be replaced only with a variant of the drive motor, more specifically in the second and third embodiments. In each case it may only be provided as a drive motor. As described above, the arrangement on the pump housing G, if considered separately, of the non-aligned axis, ie the control axis A of the pump jet P and the rotation axis B of the rotor 2 or the impeller An alternative is a variant of the drive motor which is in the form of an electric motor E or a partially integrated therein and a magnet motor M or an HTSC motor integrally formed in the pump housing G. When using the electric motor E as a drive motor disposed on or integral with the pump housing G, the teeth are provided to ensure a rotatory connection between the impeller of the pump jet P and this drive motor. There is a need for force transmission parts such as roller bearings and / or shafts. However, this is not part of the features of the present invention in which the control axis A of the pump jet P and the rotation axis B of the rotor 2 or impeller are not aligned, are not components of the invention and are standard of those skilled in the art. Belongs to technology.

The present invention is illustrated by way of example only in the description and the drawings in accordance with the embodiments, not limited to the description and the drawings, and those skilled in the art, in particular the claims, the general schematics presented from this specification, as well as the embodiment description In the scope of the present invention includes all modifications, modifications, substitutions and combinations that may be cited from the present specification and combined with one's own expertise and prior art. In particular, all individual features and implementations of the present invention and embodiments thereof may be combined with each other.

Claims (21)

A ship propulsion system S equipped with a pump jet P, comprising a pump housing G and a drive motor,
Ship propulsion system (S), characterized in that the rotor (2) of the impeller of the pump jet (P) has a rotation axis (B) which is not aligned with the control axis (A) of the pump jet (P). Ship propulsion system (S) according to claim 1, characterized in that the axis of rotation (B) of the rotor (2) is offset relative to the control axis (A) of the pump jet (P). Ship propulsion system (S) according to claim 2, characterized in that the axis of rotation (B) of the rotor (2) and the control axis (A) of the pump jet (P) are parallel. 4. The ship propulsion system according to claim 1, wherein the axis of rotation B of the rotor and the control axis of the pump jet P are inclined with each other. 5. 5. Ship propulsion system (S) according to claim 4, characterized in that the axis of rotation (B) of the rotor (2) and the control axis (A) of the pump jet (P) intersect at one point. Ship propulsion system according to any one of the preceding claims, characterized in that the drive motor is an electric motor (E) arranged on or partially integrated within the pump housing (G). Ship propulsion system (S) according to claim 6, characterized in that the electric motor (E) is an asynchronous motor, a synchronous motor or a permanent magnet motor. Ship propulsion system (S) according to claim 6 or 7, characterized in that a force transmission component such as a tooth, roller bearing and / or shaft is provided between the electric motor (E) and the impeller. Ship propulsion system (S) according to any of the preceding claims, characterized in that the drive motor is a high temperature superconductor motor or a magnet motor (M) integrally incorporated in the pump housing (G). 10. Ship propulsion system (S) according to claim 9, characterized in that the pump jet (P) is entirely controllable. Ship propulsion system according to claim 9 or 10, characterized in that the magnet motor (M) or the high-temperature superconductor motor comprises a rotor (2) which is part of the impeller (I) of the pump jet (P). S). The magnet motor (M) or the high-temperature superconductor motor according to any one of claims 9 to 11, characterized in that it comprises a stator (1) which is part of the diffuser inner ring (D) of the pump jet (P). Ship propulsion system (S). Ship propulsion system (S) according to claim 9, characterized in that the conveying medium is also used per se, in particular as lubricant and / or coolant. Ship propulsion system (S) according to any one of claims 9 to 13, characterized in that the drive of the pump jet (P) is free of force transmission components such as teeth, roller bearings and / or shafts. A deflection arrangement (12, 12a, 12b, 12c, 13) arranged and / or designed in the inner space (11) of the diffuser housing (3) is provided. Ship propulsion system (S). The deflector device 12, 12a, 12b, 12c, 13, wherein the amount of water is passed through the respective nozzles 9a, 9b, 9c through the same amount of water per unit time, in particular per unit time, and / or the like. Or to direct the flow of water such that as much water as possible without internal turbulence is discharged through the nozzle 9 of the pump jet P, in order to achieve the optimum thrust effect of the pump jet P or as much as possible without internal turbulence. And / or are designed and / or arranged to remove turbulence from the flow of water in the inner space (11) of the diffuser housing (3). 17. The marine propulsion system according to claim 15 or 16, characterized in that the deflecting device (12, 12a, 12b, 12c, 13) comprises one or more shapes of the inner space (11) of the diffuser housing (3). S). 18. The propulsion of claim 17, wherein the deflection device 12, 12a, 12b, 12c, 13 comprises an area 12c having a constant cross-sectional profile of the inner space 11 of the diffuser housing 3. System (S). 19. The deflector device 12, 12a, 12b, 12c, 13 according to claim 17 or 18 comprises an area 12a having a reduced cross-sectional profile of the inner space 11 of the diffuser housing 3. Ship propulsion system (S). 20. The area 12a according to claim 17, wherein the deflection devices 12, 12a, 12b, 12c, 13 have an expanded cross-sectional profile of the inner space 11 of the diffuser housing 3. Ship propulsion system, characterized in that it comprises a. 21. The deflector device 12, 12a, 12b, 12c, 13 comprises one or more guide vanes 13 in the inner space 11 of the diffuser housing 3. Ship propulsion system, characterized in that (S).

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