CN110311506A - Fluid distributor for fluid-cooled hollow shafts - Google Patents

Abstract

The invention relates to a fluid distributor (1) for fluid cooling of a hollow shaft (10) and a hollow shaft (10) equipped with such a fluid distributor, in particular for a rotor shaft ( 10) and an electric machine (100) equipped with such a hollow shaft (10). The fluid distributor (1) can be installed in a simple and thus easy-to-install manner in that the fluid distributor (1) has a tubular base body (2) with an open end region Section (3), closed end section (4) and intermediate section (5) formed in between, wherein the open end section (3) is designed to fix the fluid distributor (1) in the hollow for fluid inflow On the fluid inlet (12) of the shaft (10), and the closed end section (4) is designed to fix the fluid distributor (1) on the hollow shaft (10), and wherein, in the middle section (5) At least one fluid passage (6; 6a; 6b) is formed.

Description

Fluid distributor for fluid-cooled hollow shafts

technical field

The invention relates to a fluid distributor for fluid cooling a hollow shaft, a hollow shaft with such a fluid distributor, in particular for a rotor shaft of an electric machine, and a fluid distributor with such a hollow shaft, in particular for The motor of the vehicle.

Background technique

It is known to cool and/or lubricate hollow shafts, such as the rotor shaft of an electric machine, by flowing a fluid, for example oil, through the interior of the hollow shaft.

From DE 10 2014 107 845 A1 a fluid distributor for a hollow shaft of a rotor of an electric motor is known for fluid cooling. Here, the hollow shaft has a fluid inlet opening axially into the hollow shaft interior of the hollow shaft and a fluid outlet in the form of a radial through-hole in the hollow shaft, the fluid inlet serving to introduce fluid into the hollow shaft interior, and the fluid outlet For draining fluid from the hollow shaft interior. In this case, the fluid distributor is arranged in the hollow shaft interior and has a funnel-shaped base body with an open end section with a smaller diameter and an open end section with a larger diameter. Here, the open end section with a smaller diameter is attached to the fluid inlet. The open end section with the larger diameter is arranged in the hollow shaft interior and opens into the hollow shaft interior. In this case, the fluid can be introduced via the fluid inlet and via the open end section with a smaller diameter into the interior of the funnel-shaped base body and via the open end section with a larger diameter into the region of the hollow shaft interior surrounding the fluid distributor and Fluid outlets in the hollow shaft can be drained from this area.

An oil distributor for lubricating the bearings of a hollow shaft is known from EP 0 430 854 B1, which oil distributor has a tubular base body with two open end sections.

A journal bearing for a propeller shaft is known from patent document DE 2 407 415, the bearing shells of which are held in place by wedge strips. In this case, the wedge strips have radial through-holes for supplying oil to the propeller shaft.

However, the fluid dispensers known in the prior art have not been optimally constructed. Therefore, the fluid distributors known from the prior art can generally only be positioned and/or mounted with difficulty and often only with the aid of mounting aids. Furthermore, in the case of fluid distributors known from the prior art, position locking is technically demanding, especially at high rotational speeds of the hollow shaft. Furthermore, a targeted, locally controlled cooling of the fluid is generally hardly ensured by means of the fluid distributors known from the prior art.

Contents of the invention

The technical problem to be solved by the present invention is therefore to design and improve the aforementioned fluid distributor in such a way that it can be installed in a hollow shaft, for example the rotor shaft of an electric motor, in a simple and therefore easy-to-install manner and in particular also can Enables speed-stabilized positioning and/or targeted, locally controlled fluid cooling.

The technical problem is solved according to the invention by a fluid distributor for fluid cooling of a hollow shaft and/or at least one bearing for supporting the hollow shaft, in particular for the rotor shaft of an electric machine and/or at least one bearing for supporting the rotor shaft of the electric machine for fluid cooling, wherein it is provided that the fluid distributor has a tubular base body, wherein the tubular base body has an open end section, a closed end section and a configuration In the middle section between the open end section and the closed end section, wherein the open end section is designed to fix the fluid distributor on the fluid inlet for the fluid to enter the hollow shaft, wherein the The closed end section is designed for fastening the fluid distributor to the hollow shaft, and wherein at least one fluid through-opening is formed in the middle section.

The technical problem is also solved according to the invention by a hollow shaft, in particular a rotor shaft for an electric machine, which has a fluid cooling device, wherein the hollow shaft comprises a hollow shaft for introducing a fluid into the hollow shaft A fluid inlet of the interior and at least one fluid outlet for discharging fluid from the hollow shaft interior, it being provided that a fluid distributor of the aforementioned type is arranged in the hollow shaft interior.

The technical problem is also solved according to the invention by an electric machine, in particular for a vehicle, which has a rotor and a stator, wherein the rotor is mounted rotatably on a rotor shaft in the form of a hollow shaft, it being provided that the The rotor shaft is a hollow shaft of the aforementioned type.

In this case, the fluid distributor is designed in particular for fluid cooling of the hollow shaft and/or at least one bearing for supporting the hollow shaft. For example, a fluid distributor can be used for fluid cooling the rotor shaft of the electric machine and/or at least one bearing for supporting the rotor shaft of the electric machine.

In particular, the fluid distributor has a tubular base body. In this case, the tubular main body has an open end section, a closed end section and a middle section formed between the open end section and the closed end section. In this case, the open end section is designed in particular to fasten the fluid distributor to the fluid inlet for the fluid to enter the hollow shaft. In this case, the closed end section is designed in particular for fastening the fluid distributor to the hollow shaft. In this case, in particular at least one fluid passage opening is formed in the central section, in particular in the form of a radial passage opening.

A fluid distributor designed in this way can be installed in a simple and therefore easy-to-install manner, for example without the aid of installation aids, in a hollow shaft equipped with a hollow shaft interior for introducing fluid into the hollow shaft There is a fluid inlet and at least one fluid outlet for discharging fluid from the inner space of the hollow shaft.

The invention therefore also relates to a hollow shaft, in particular a rotor shaft for an electric machine, which has a fluid cooling device, wherein the hollow shaft comprises a fluid inlet for introducing a fluid into the hollow shaft interior of the hollow shaft and at least one fluid outlet for discharging fluid from the hollow shaft interior, and such a fluid distributor is arranged in the hollow shaft interior of the hollow shaft. In this case, the fluid inlet can open into the hollow shaft interior, in particular axially, in particular along the axis of rotation of the hollow shaft. In this case, the at least one fluid outlet can in particular be designed with an approximately radial, for example radially extending, passage opening in the hollow shaft. In this case, an approximately radial extension is also to be understood as an oblique extension which extends substantially radially relative to the axis of rotation of the hollow shaft. In this case, the open end section of the tubular main body of the fluid distributor can be fixed or fastened, in particular at the fluid inlet. In this case, the closed end section of the tubular main body of the fluid distributor can be fixed, in particular on or in the hollow shaft, preferably in the hollow shaft. In this case, the fluid can be introduced into the interior of the tubular base body of the fluid distributor via the fluid inlet and can be discharged into the surrounding fluid of the hollow shaft interior via at least one fluid passage opening in the middle section of the tubular base body of the fluid distributor. In the region of the distributor and from the region of the hollow shaft interior surrounding the fluid distributor through at least one fluid outlet of the hollow shaft. The fluid may in particular be a coolant such as oil. Thus, the fluid distributor may in particular be a coolant distributor, for example an oil distributor, or the fluid cooling may be oil cooling.

Furthermore, the invention relates to an electric machine, in particular for a vehicle, such as a hybrid or electric vehicle, having a rotor and a stator, wherein the rotor is rotatably mounted on a rotor shaft in the form of a hollow shaft, Therein, the rotor shaft is such a hollow shaft.

A targeted, locally controlled fluid cooling can be achieved by means of such a fluid distributor or such a hollow shaft. For example, a targeted local control of the fluid flow is possible via the position, design and number of the at least one fluid passage opening. Cooling can thus be optimized. This is particularly advantageous in rotor shafts of electric machines with a high power density and/or a compact and/or robust construction, since during operation of the electric machine heat is generated not only by the shaft bearing but also by the operation of the electric machine itself, which The heat should be dissipated in order to ensure loss-free operation of the electric machine.

The connection between the axial fluid inlet and the fluid distributor fastened thereto via the open end section of the tubular base body can be based on the tubular design of the tubular base body of the fluid distributor and the fluid flow in the axial direction. Axial positioning on the inlet provides high rotational speed stability. This can be particularly advantageous in hollow shafts with high rotational speeds, such as the rotor shaft of an electric machine.

In one configuration, the open end section is designed to fasten the fluid distributor to the fluid inlet by means of a snap-in device, or the open-end section can be fastened or fastened to the fluid inlet by means of a snap-in device. For example, the open end section can be designed for fastening the fluid distributor to the fluid inlet by means of a snap ring or hook connection, or the open end section can be fastened or fixed by means of a snap ring or hook connection. Fixed on fluid inlet. Thus, the fluid distributor can be fastened to the fluid inlet in a simple and easy-to-install manner.

In a further embodiment, the closed end section is designed to fix the fluid distributor in the hollow shaft by means of a mating connection, or the closed end section can be fastened or fastened in the hollow shaft by means of a mating connection. Thus, the fluid distributor can be fastened in the hollow shaft in a simple and easy-to-install manner.

In a further embodiment, the closed end section is designed to close and seal the axial hollow shaft opening of the hollow shaft, or the closed end section closes the axial hollow shaft opening of the hollow shaft. In this case, the closed end section can in particular have a closed section which closes off an axial side of the tubular main body. Thus, the fluid dispenser can additionally also have a filling function. Additional components for closing and sealing the axial hollow shaft opening, such as an additional web and their arrangement, are no longer required. The manufacture and installation of the hollow shaft can thus be further improved.

In a further embodiment, the closed end section is equipped with at least one sealing device for sealing between the closed end section and the hollow shaft, in particular the inner side of the hollow shaft. A tight mating connection can thus be achieved, in particular between the closed end section and the hollow shaft.

The tubular base body or the fluid distributor can be embodied in particular rotationally symmetrically and/or can be arranged in the hollow shaft interior in particular rotationally symmetrically with respect to the axis of rotation of the hollow shaft. A particularly high rotational speed stability can thus be achieved.

In a further embodiment, the tubular base body is approximately conical. In this case, the tubular base body can in particular taper from the closed end section towards the open end section. Improved fluid transport can thus be achieved.

In particular, the at least one fluid passage can have a substantially radial, in particular radially extending, passage.

In particular, at least one fluid passage can be formed adjacent to the closed end section. As a result, the longest fluid path possible and thus an improved cooling effect can be achieved.

The at least one fluid passage can, for example, be designed with a circular cross section and/or with an elliptical cross section, for example as an elongated hole, and/or with another cross-sectional shape. The fluid cooling can be controlled locally in a targeted manner through the design of the at least one fluid passage.

In particular, a plurality of fluid passage holes can be formed in the central section. The fluid cooling can thus be controlled better and locally in a targeted manner.

In a further embodiment, at least one sequence of two or more circumferentially distributed fluid passage holes is formed in the middle section. For example, at least two sets of sequences of two or more circumferentially distributed fluid passage holes can be formed in the middle section. An improved targeted local control of the fluid cooling can thus be achieved. At least one series of fluid openings, for example at least two series of fluid openings, can in particular be formed adjacent to the closed end section. The fluid passages of different fluid passage sequences can be designed both, for example, identically or differently from one another.

A large geometrical diversity can be achieved in the design of the fluid passage openings. The fluid guidance and/or fluid delivery can be tailored to the respective field of use and type of hollow shaft via the number, arrangement, configuration, eg cross-sectional shape and/or dimensions of the fluid passage holes.

In a further embodiment, wing elements are formed on the outer surface of the central section for guiding the fluid, in particular through the interior of the hollow shaft, and/or for conveying the fluid, in particular through the interior of the hollow shaft, and/or Or the positioning, in particular centering, of the fluid distributor in the hollow shaft. A better targeted local control of the fluid cooling and/or a further improvement of the fluid delivery and/or a further simplification of the installation of the fluid distributor in the hollow shaft, reduction of installation errors and greater positional reliability can thus be achieved.

For fluid transport, the geometry of the airfoil can be designed in a flow-effect manner. Here, for example, at least one part of the airfoil can be designed in the form of a turbine or propeller.

In order to position, in particular center, the fluid distributor in the hollow shaft, the wings of the fluid distributor can in particular bear against the inner side of the hollow shaft and position, in particular center, the fluid distributor in the hollow shaft.

In particular, the wings can be designed to be spreadable or spreadable or openable or openable in order to position, in particular center, the fluid distributor in the hollow shaft. This can be achieved, for example, by designing the airfoil in such a way that it is deformable, in particular elastic, and has an outer diameter in the unmounted state that is greater than the inner diameter of the hollow shaft. During assembly, the wing is then pressed against the inner side of the hollow shaft, wherein the wing is deformed and can position and in particular center the tubular base body or the fluid distributor in the hollow shaft. In this case, for example, the wings can be designed in such a way that they are inclined starting from the outer surface of the middle section of the tubular base body relative to the inner side of the hollow shaft and/or relative to the outer surface of the middle section of the tubular base body. extend. In this case, the wings run obliquely outwards from the open end section towards the closed end section. When the open end section is pushed into the hollow shaft, the airfoil designed in this way can press against the inner side of the hollow shaft and bend against the tubular base body, in particular without counteracting the pushing force.

The airfoil may, for example, have a substantially consistent material strength. However, it is also possible, for example, for the airfoil to narrow radially outward and/or to be designed with a radially outwardly decreasing material strength.

The wing can, for example, be designed straight. However, it is also possible, for example, for the airfoil to be curved, for example turbine-shaped or propeller-shaped.

Greater geometric diversity can be achieved in the design of the airfoil. In this case, the number, arrangement, length, geometry and/or stand angle of the wing elements can be directed and/or conveyed and/or positioned, in particular centered, in a targeted manner in accordance with the various fields of use of the hollow shaft and type.

In another configuration, at least one set of two or more circumferentially distributed airfoils and/or at least one set of two or more shafts are formed on the outer surface of the middle section. Rows and rows of airfoils distributed in different directions. In particular, two or more, for example three or four or five sequences of two or more circumferentially distributed wings and/or two or more groups can be formed on the outer surface of the middle section. More than two sets of ranks formed by two or more axially distributed airfoils. Fluid guidance and/or fluid delivery and/or positioning, in particular centering, can thus be optimized by means of the airfoil.

In a further embodiment, the fluid distributor is formed from plastic. The fluid dispenser can thus be manufactured in a simple and cost-effective manner.

In a further embodiment, the open end section and/or the middle section and/or the closed end section are provided with stabilizing ribs. The mechanical stability of the fluid distributor can thus be optimized. The embodiment of the fluid distributor with stabilizing ribs can be realized advantageously and simply, especially if the fluid distributor is made of plastic.

For example, stabilizing ribs can be formed on the outer surface of the open end section and/or the middle section, which are distributed around the circumference and extend in the axial direction of the tubular basic body.

For example, the outer surface of the closure section may be provided with stabilizing ribs, for example in the form of a cross.

As a result, the aforementioned disadvantages are avoided and corresponding advantages are obtained.

Description of drawings

There are many possibilities for designing and improving the fluid distributor according to the invention, the hollow shaft according to the invention and the electric motor according to the invention in an advantageous manner. Some preferred embodiments of the fluid distributor according to the invention, the hollow shaft according to the invention and the electric motor according to the invention are explained in greater detail below with reference to the drawings and the associated description. In the attached picture:

1 shows a schematic partial cross-sectional view of an embodiment of an electric machine according to the invention with an embodiment of a hollow shaft according to the invention as rotor shaft and a fluid distributor according to the invention with a tubular base body In an embodiment, the tubular base body has an open end section, a closed end section and an intermediate section located therebetween, the intermediate section having a sequence of fluid passage holes distributed around it;

FIG. 2 shows the embodiment shown in FIG. 1 of the hollow shaft according to the invention and the fluid distributor according to the invention in an enlarged, schematic partial cross-section;

FIG. 3 shows in a further enlarged, schematic partial cross-sectional view the open end section of the embodiment shown in FIG. 1 of the fluid distributor according to the invention;

FIG. 4 shows in a further enlarged partial schematic view the closed end section of the embodiment shown in FIG. 1 of the fluid distributor according to the invention;

5 shows a schematic partial cross-sectional view of an embodiment of an electric machine according to the invention with an embodiment of a hollow shaft according to the invention as rotor shaft and a fluid distributor according to the invention with a tubular base body In one embodiment, the tubular base body has an open end section, a closed end section and an intermediate section located therebetween, the intermediate section having two sequences of fluid passage holes distributed around the circumference and an airfoil;

6-9 show schematic, partial perspective views of the embodiment shown in FIG. 5 of the fluid dispenser according to the present invention;

10 to 14 show schematic cross-sectional views of further embodiments of the fluid distributor according to the invention with different wings and/or fluid through-holes;

15 to 17 show schematic partial perspective views of further embodiments of the fluid distributor according to the invention with an open end section equipped with stabilizing ribs and a middle section;

18 to 23 show schematic representations of further embodiments of the fluid distributor according to the invention with differently designed closed end sections without/with sealing means and/or without/with stabilizing ribs Sexual partial stereogram.

Detailed ways

1 to 23 show different embodiments of a fluid distributor 1 according to the invention, for example an oil distributor, for fluid cooling.

FIGS. 1 and 5 illustrate that a fluid distributor 1 designed in this way can be used in particular for fluid cooling of the hollow shaft 10 and/or of the hollow shaft bearings 11 , 11 ′ and in particular for the fluid cooling of the rotor shaft 10 and/or of the rotor shaft of the electric machine 100 Bearings 11, 11'.

Figures 1 and 5 show different embodiments of an electric machine 100, in particular for a vehicle, comprising a rotor 101 and a stator 102 with a lamination pack 101'. Here, the laminated core 101' of the rotor 101 is fastened, for example by shrink fit, on a rotor shaft in the form of a hollow shaft 10, which is rotatably supported on both sides by two rotor shaft bearings 11, 11'. Here, the hollow shaft 10 is equipped with a fluid cooling device. Here, the hollow shaft 10 is equipped with a fluid inlet 12 , for example an oil delivery element, for introducing a fluid F into the hollow shaft interior H of the hollow shaft 10 , the fluid inlet 12 being axially in the direction of the axis of rotation R of the hollow shaft 10 It leads into the inner space H of the hollow shaft. In this case, a plurality of fluid outlets 13 are formed in the hollow shaft 10 for discharging the fluid F from the hollow shaft interior H, the fluid outlets 13 being formed with through-bores extending approximately radially in the hollow shaft 10 . FIGS. 1 and 5 show that the through-holes serving as fluid outlets 13 have an oblique extension, which extend substantially radially relative to the axis of rotation R of the hollow shaft 10 .

Within the scope of FIGS. 1 and 5 , different embodiments of the fluid distributor 1 according to the invention are arranged in the hollow shaft interior H. FIG. 2 to 4 show schematic views of the embodiment of the fluid dispenser 1 according to the invention shown in FIG. 1, and FIGS. Schematic representation of the embodiment shown in 5.

FIGS. 1 to 4 and FIGS. 5 to 9 show that the fluid distributor 1 has a tubular base body 2, for example made of plastic, with an open end section 3, a closed end section 4 and a configuration in the open Intermediate section 5 between end section 3 and closed end section 4 . In this case, the tubular base body 2 is substantially conical and narrows from the closed end section 4 towards the open end section 3 . Here, the open end section 3 is designed to fix the fluid distributor 1 on the fluid inlet 12, and the open end section 3 is fixed on the fluid inlet 12 by means of the snap-fit device 3'. The closed end section 4 is designed here to fasten the fluid distributor 1 on the hollow shaft 10 and to close and seal the axial hollow shaft opening of the hollow shaft 10 . Here, the closed end section 4 has a closed section 4' closing the axial side of the tubular base body 2 and is equipped with a seal 7, for example in the form of two sealing rings accommodated in a seal receptacle 7'. The closed end section 4 of the tubular base body 2 is fixed in the hollow shaft 10 by means of a mating connection.

FIGS. 1 to 4 and FIGS. 5 to 9 show that a fluid passage 6 is formed in the middle section 4 adjacent to the closed end section 4 .

In the embodiments shown in FIGS. 1 to 4 , the fluid passage openings 6 are designed in the form of a series 6 a of four circumferentially distributed fluid passage openings 6 with a circular cross section.

However, in the designs shown in FIGS. 5 to 9 , the fluid passage holes 6 are designed in the form of two sets of sequences 6 a , 6 b each consisting of four surrounding fluid passage holes 6 . In this case, the plurality of fluid openings 6 of different fluid opening sequences 6a, 6b have different cross sections. Accordingly, the fluid passage openings 6 of the fluid passage opening sequence 6 a closest to the closed end section 4 are each designed in the form of elongated holes, while the fluid passage openings 6 of the other fluid passage opening sequence 6 b have a circular cross section.

Fluid paths, for example oil paths, are illustrated by arrows in FIGS. 1 and 5 . Here, FIGS. 1 and 5 show that a fluid F can be introduced into the interior space I of the tubular base body 2 of the fluid distributor 1 via the fluid inlet 12 and that the fluid F passes through the middle section 5 of the tubular base body 2 of the fluid distributor 1. The through-hole 6 can discharge into the area of the hollow shaft interior H surrounding the fluid distributor 1 and can exit from the area of the hollow shaft interior H surrounding the fluid distributor 1 via the fluid outlet 13 in the hollow shaft 10 .

In the configurations shown in FIGS. 5 to 9 , wings 8 are additionally formed on the outer surface of the middle section 5 of the tubular base body 2 of the fluid distributor 1 for guiding and conveying the fluid through. Through the hollow shaft interior H and for the positioning, in particular centering, of the fluid distributor 1 in the hollow shaft 10 . In this case, the wing 8 is designed to be spreadable or spreadable or openable or openable, and the wing 8 of the fluid distributor is supported against the inner side of the hollow shaft 10 . In this way, the wing 8 can be used not only as a guide or a fluid-guiding contour but also in particular for the positioning and centering of the fluid distributor 1 in the hollow shaft 10 . In this case, the wing 8 is designed in such a way that, starting from the outer surface of the middle section 5 of the tubular base body 2 , it faces the inner side of the hollow shaft 10 and faces the outer surface of the middle section 5 of the tubular base body 2 . Inclined extension. In this case, the wing 8 runs obliquely, in particular from the open end section 3 towards the closed end section 4 . When the open end section 3 is pushed into the hollow shaft 10 , the wing 8 can be pressed against the inner side of the hollow shaft 10 and bent in the direction of the tubular base body 1 , wherein the fluid distributor 1 is in the hollow shaft 10 is positioned and centered.

In the designs shown in FIGS. 5 to 9 , five sets of airfoils 8 each composed of four circumferentially distributed sequences or four groups respectively composed of five axially distributed airfoils 8 are configured on the outer surface of the middle section 5 The airfoils 8 form ranks. In this case, the wing 8 protrudes at an upright angle from the outer surface of the central section 5 of the tubular base body 2 and has a substantially constant material strength.

FIGS. 10 to 14 show that in the design of the fluid passages 6 and/or of the airfoils 8 a greater geometric diversity can be achieved, due to which it is possible, for example, by the number, the arrangement of the fluid passages 6 , design and size and/or targeted fluid guidance and/or fluid delivery and/or positioning, in particular centering, to the hollow shaft by means of the number, arrangement, length, geometry and/or vertical angle of the wings 8 various fields and types of use.

In the design shown in FIG. 10, five sets of sequences 8a, 8b, 8c, 8d, 8e consisting of four circumferentially distributed airfoils 8 are formed on the outer surface of the middle section 5, or four sets of A row 8A, 8B, 8C, 8D of five axially distributed airfoils 8 . Here, the fluid through-holes 6 (similar to the embodiment shown in FIGS. 5 to 9 ) are designed as two groups of four surrounding fluid through-holes with different (long-hole/circular) cross-sections. Sequence 6a, 6b of 6.

In the design shown in Fig. 11 and Fig. 12, three groups of sequences 8a, 8b, 8c composed of four circumferentially distributed airfoils are constructed on the outer surface of the middle section 5, or in other words four groups are composed of three shafts. The rows 8A, 8B, 8C, 8D formed by the distributed airfoils 8 . Here, the configurations shown in FIGS. 11 and 12 are distinguished from one another by the vertical angle of the wings 8 . In the design shown in Fig. 11 and Fig. 12, the fluid through hole 6 (similar to the design shown in Fig. 1 to Fig. 4) is designed as a group of fluid holes with a circular cross-section distributed around four A sequence 6a of through holes 6 is formed.

In the design shown in FIG. 13 , the airfoil 8 (similar to the design shown in FIGS. 5 to 12 ) has a substantially consistent material strength.

In contrast, in the embodiment shown in FIG. 14 , the airfoil 8 narrows radially outward, wherein the material strength of the airfoil 8 decreases radially outward.

FIGS. 15 to 17 show that, in a further embodiment, the open end section 3 and the middle section 5 are equipped with stabilizing ribs 9 . In this case, the stabilizing ribs 9 are arranged distributed around the outer surface of the open end section 3 and the middle section 5 and are designed to extend in the axial direction of the tubular basic body 2 .

In the embodiment shown in FIG. 18 , the closed end section 3 is designed without a seal. Optionally, depending on the material used for the construction of the tubular base body 2 , no seals may be required.

In the embodiment shown in FIG. 19 , however, the closed end section 4 is equipped with a sealing device 7 .

In the embodiment shown in FIGS. 20 and 21 , the closed end section 3 is equipped with a seal 7, wherein stabilizing ribs 9', in particular in the form of a cross, are formed on the outer surface of the closed section 4'.

In the embodiment shown in FIGS. 22 and 23 , the closed end section 3 is equipped with a sealing device 7 , wherein the outer surface of the closed section 4' is configured without stabilizing ribs.

List of reference signs

1 fluid dispenser

2 tubular base

3 Open end section of tubular base

Snap-in device for 3’ open end section

4 Closed end section of tubular base body

4’ Closed section of closed end section

5 Middle section of tubular base

6 Fluid through holes

6a, 6b Sequence of surrounding fluid passage holes

7 Sealing device

7’ sealed housing

8 wing

8a-8e Sequence of surrounding airfoils

8A-8D Rows of axially distributed airfoils

9 Stabilizing ribs for open end sections and intermediate sections

9' Stabilizing ribs for closed section of closed end section

10 Hollow shaft/rotor shaft

11, 11' rotor shaft bearing

12 Fluid inlet

13 Fluid outlet

100 motor

101 rotor

101’ stack

102 Stator

H Hollow shaft inner space

I Internal space of the tubular base body of the fluid distributor

F fluid

R Axis of rotation of the hollow shaft

Claims (15)

1. a kind of fluid distributor (1), for hollow shaft (10) and/or at least one for supporting the hollow shaft (10) Bearing (11,11 ') carries out that fluid is cooling, particularly for motor (100) armature spindle (10) and/or at least one for supporting It is cooling that the bearing (11,11 ') of the armature spindle (10) of motor (100) carries out fluid, which is characterized in that the fluid distributor (1) With tubular matrix (2), wherein there is the tubular matrix (2) open end section (3), closing end section (4) and construction to open It puts end section (3) and closes the centre portion (5) between end section (4), wherein the open end section (3) is designed for will Fluid distributor (1) is fixed on the fluid inlet (12) for making fluid enter hollow shaft (10), wherein the closing petiolarea Section (4) is designed for for fluid distributor (1) being fixed on hollow shaft (10), and wherein, the structure in the centre portion (5) At least one fluid through-hole (6 is made；6a；6b).

2. fluid distributor (1) described in accordance with the claim 1, which is characterized in that the open end section (3) is designed for borrowing Help clamping apparatus (3 ') that fluid distributor (1) is fixed on fluid inlet (12).

3. fluid distributor (1) according to claim 1 or 2, which is characterized in that closing end section (4) design is used In fluid distributor (1) is fixed in hollow shaft (10) by mating connection device.

4. according to fluid distributor described in one of preceding claims (1), which is characterized in that the closing end section (4) sets Count the axial hollow shaft opening for closing and sealing the hollow shaft (10).

5. according to fluid distributor described in one of preceding claims (1), which is characterized in that the closing end section (4) is matched Have at least one sealing device (7) for sealing between closing end section (4) and hollow shaft (10).

6. according to fluid distributor described in one of preceding claims (1), which is characterized in that the tubular matrix (2) is from envelope Closed end section (4) is gradually narrowed towards open end section (3).

7. according to fluid distributor described in one of preceding claims (1), which is characterized in that in the centre portion (5) It is configured at least one set of sequence (6a, 6b) being made of two or more around the fluid through-hole (6) of distribution.

8. according to fluid distributor described in one of preceding claims (1), which is characterized in that in the centre portion (5) Thumbpiece (8) are configured on outer surface, for fluid guiding and/or fluid conveying and/or fluid distributor (1) in hollow shaft (10) positioning in especially centers.

9. according to fluid distributor described in one of preceding claims (1), which is characterized in that in the centre portion (5) Be configured on outer surface it is at least one set of be made of two or more around thumbpieces (8) of distribution sequence (8a, 8b, 8c, 8d, 8e) and/or at least one set of thumbpiece (8) being axially distributed by two or more constitute ranks (8A, 8B, 8C, 8D)。

10. according to fluid distributor described in one of preceding claims (1), which is characterized in that the fluid distributor (1) by Constructed in plastic material.

11. according to fluid distributor described in one of preceding claims (1), which is characterized in that the open end section (3) And/or centre portion (5) and/or closing end section (4) are equipped with stablizing floor (9；9 '), especially wherein, in the open end Stable floor (9) is configured on the outer surface of section (3) and/or centre portion (5), the stable floor is around distribution ground arrangement And along the axially extending of tubular matrix (2), and/or wherein, closing end section (4) has closing tubular matrix (2) The closed section (4 ') of axial side, the outer surface of the closed section (4 ') is equipped with stablizing floor (9 ').

12. a kind of hollow shaft (10), the armature spindle (10) in particular for motor (100), the hollow shaft (10) has fluid Cooling device, wherein the hollow shaft (10) includes the hollow shaft inner space for fluid (F) to be introduced to hollow shaft (10) (H) fluid inlet (12) and at least one fluid outlet for being used to for fluid (F) being discharged from hollow shaft inner space (H) (13), which is characterized in that be disposed in the hollow shaft inner space (H) according to stream described in one of claim 1 to 11 Body distributor (1).

13. hollow shaft (10) according to claim 12, which is characterized in that the fluid inlet (12) is axially passed through hollow Axis inner space (H), wherein at least one fluid outlet (13) is configured with generally radially extending in hollow shaft (10) Through-hole, wherein the opening end section (3) of the tubular matrix (2) of the fluid distributor (1) is capable of fixing or is fixed on fluid inlet (12) on, wherein the closing end section (4) of the tubular matrix (2) of the fluid distributor (1) is capable of fixing or is fixed on hollow shaft (10) on, especially hollow shaft (10) is interior, wherein fluid (F) can be introduced into fluid distributor (1) by fluid inlet (12) The inner space (I) of tubular matrix (2) and by the centre portion (5) of the tubular matrix (2) of fluid distributor (1) at least One fluid through-hole (6；6a；Can 6b) be discharged into hollow shaft inner space (H) in the region of fluid distributor (1), and And gone out from the region around fluid distributor (1) of hollow shaft inner space (H) by least one fluid of hollow shaft (10) Mouth (13) can be discharged.

14. according to hollow shaft described in claim 12 or 13 (10), which is characterized in that the fluid distributor (1) it is wing The medial surface that part (8) abuts against hollow shaft (10) supports and fluid distributor (1) is especially made to center in hollow shaft (10).

15. a kind of motor (100) particularly for vehicle has rotor (101) and stator (102), wherein the rotor (101) it is rotatably supported on the armature spindle (10) of hollow shaft form, which is characterized in that the armature spindle (10) is according to power Benefit require one of 12 to 14 described in hollow shaft.