EP3072219A1

EP3072219A1 - Electrical machine having a frame and sleeve

Info

Publication number: EP3072219A1
Application number: EP14705143.7A
Authority: EP
Inventors: Konrad Brandl; Christian Deeg; Gerhard Dorr; Benjamin Eichinger; Wolfgang Johann Greul; Jürgen Hofmann; Eric Joseph; Ekkehard Ressel; Uwe Scharf; Matthias Scherer; Sebastian Weiss; Ulrich Werner; Michael Stegherr
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2014-02-17
Filing date: 2014-02-17
Publication date: 2016-09-28
Also published as: WO2015120914A1; RU2644418C1; US11018548B2; CN106030996A; CN106030996B; US20170012487A1

Abstract

The invention relates to an electrical machine (1) comprising a rotor (4) which is rotatably mounted around a rotation axis (5) extending in the axial direction (3) in bearing devices (16, 17), a stator (7) having two axial ends, an air gap between rotor and stator, an interior chamber (10) encompassing the stator (7) and rotor (4), a sleeve (11) encompassing a first part (111) which encloses the interior chamber (10), a frame (12) having a first (123) and a second (121) longitudinal support (123), a first (122) and a second (124) cross-support, and a dividing device (2) on the frame (12). The stator (7) comprises a fastening device (15) for connection to the frame (12) and the dividing device (2) can make the interior chamber accessible from the outside in a plane parallel to the frame (12). The invention further relates to a collection, to a frame (12), to a sleeve (11), or to a service or production method of such an electrical machine (1).

Description

description

ELECTRIC MACHINE WITH FRAME AND CASING The invention relates to an electrical machine,

- Which has a rotor which is rotatably mounted about an axis of rotation, wherein the axis of rotation extends in an axial direction,

a stator which extends along a rotation axis from a first axial end to a second axial end of the stator and, in an operation of the electric machine, interacts with the rotor via an air gap,

having an interior, wherein the stator and the rotor are in the interior,

- And comprises a shell having a first device which surrounds the interior at least partially.

Furthermore, the invention relates to a series of electric machines comprising corresponding electric machines, a frame for the electric machine, a casing for the electric machine and a method for servicing the electric machine and a method for manufacturing the electric machine. Such electrical machine are from the

DE 10 2010 064 010 AI known. In addition to the known electrical machines with gaseous cooling media, in particular air, there is described an electric machine in which a shaft of the rotor is formed as a hollow shaft through which a liquid cooling medium can flow. There, an embodiment of an electrical machine is described which has a base body comprising at least one stand. Optionally, the base body in addition to the stator include further elements, such as a housing in which the shaft of the rotor is mounted in bearings. The design of the shaft of the rotor as a hollow shaft can be done as needed. In principle it is possible, the liquid cooling medium at one axial end of the shaft of Ro feed in and deliver at the other axial end. It is also possible for the liquid coolant initially to flow axially in an inner tube and to flow back in the opposite direction at an intermediate space between the shaft and the inner tube. The supply of the liquid cooling medium to the shaft of the rotor can be axial or radial.

Another such electrical machine is from the

DE 10 2010 001 488 AI known. There is described an electric machine with a stator having a cooling circuit with a liquid coolant, and a rotor comprising a thermosiphon with an evaporator and at least one capacitor. The condenser is connected to the cooling circuit for heat dissipation of the rotor heat. In the embodiment described therein, the stator of the electric machine is cooled by a liquid refrigerant, e.g. Water, cooled.

Furthermore, such an electric machine is also known from the publication JP 2011-030304 A. The electrical machine described there has a base frame, which has a bearing for supporting the rotor, a

Stator mounting plate for installing the stator and a bearing mounting plate for installing the bearing has. The stator is installed on the stator mounting plate and the bearing is installed on the bearing mounting plate. In the electric machine, the vertical distance from the center of the stator to the stator mounting plate of the base frame is smaller than the outer radius of the stator. This reduces the distance between the base frame and the center of the stator as well as the distance between the base frame and the bearings and thus improves the load-bearing rigidity. In the electric machine so a displacement and vibration of the stator center and the rotor center is reduced. Because connecting parts between the

Stator mounting plate, a bottom plate, a vertical one

Plate, a reinforcing plate, the bearing mounting plate, a cover, side plates and partitions

Are secured, the rigidity of the basic mens increases and so the stator center and the shaft hardly moved. The cover is ship-shaped and secured with the connecting parts of the base frame by welding. This further improves the rigidity of the base frame. The cover prevents distribution of a

Air flow in a free space that is unpredictable due to different locations of the electric machine. The air flow serves to cool the electric machine, wherein a laminated core of the stator has channels for cooling at appropriate intervals. A fan sends air as coolant through the rotating rotor. The air then flows in a radial direction from an inner side to an outer side of the stator through the channels. Japanese Unexamined Patent Publication No. 2011-030304 A refers to another type of electric machines, but will not be discussed further because of the lack of reference to the subject matter of the Japanese publication. This type of electrical machine has a box-like or cylindrical housing in which the stator is located and in which the bearing for the rotor is installed. This is possible because in this type of electric machine the housing has sufficient strength to support the weight of the stator and the rotor.

Based on this knowledge, the invention has the object to provide an electrical machine cost in a high quality available. This object is achieved by an electric machine with the features of claim 1.

An electrical machine according to the invention comprises

a rotor which is rotatably mounted about a rotation axis, wherein the rotation axis is in an axial direction,

a stator extending along the axis of rotation from a first axial end to a second axial end, and in an operation of the electric machine via an air gap with the rotor cooperates,

an interior, wherein the stator and the rotor are located in the interior,

a shell having a first device at least partially surrounding the interior,

a frame which defines an extension of the interior in a radial plane with a first axial frame part, a first radial frame part, a second axial frame part and a second radial frame part, wherein the radial plane through the axial direction and one perpendicular to the axial Direction extending first radial direction is spanned, and

a separating device on the frame,

- wherein the stator has a fixing device with which the stator is fixed to the frame,

- Wherein the rotor is rotatably mounted at its first axial end in a first bearing device on the frame about the axis of rotation,

- Wherein the rotor is rotatably mounted at its second axial end in a second bearing device on the frame about the axis of rotation,

- Wherein the interior is outside the radial plane and outside of parallel planes accessible by the separating device, the parallel planes intersect the frame and parallel to the radial plane.

The object is also achieved by a series with the features of claim 32. A series of electrical machines according to the invention comprises at least one first electric machine according to a first embodiment of an electric machine according to the invention and a second electric machine, in particular according to a second embodiment of an electric machine according to the invention.

The object is also achieved by a frame with the features of claim 33. An inventive frame for an electric machine according to the invention comprises the first and the second axial frame part, the first and the second radial frame part.

The object is also achieved by a casing with the features of claim 34. A casing according to the invention for an electrical machine according to the invention has the first device.

The object is also achieved by a method for a service according to claim 35. In a method according to the invention for a service on an electric machine according to the invention, the interior is made accessible outside the radial plane and outside the parallel planes by the separating device.

The object is also achieved by a method for producing the features according to claim 36. In a method according to the invention for producing an electrical machine according to the invention, the electric machine is produced with an interior that is accessible outside the radial plane and the parallel plane through the separating device.

An electrical machine according to the invention solves the problem advantageously by the frame and the separating device at least outside the radial plane and parallel planes provide low structural conditions to units of the electric machine. An electrical machine according to the invention can advantageously comprise the units in their specific functions and their interaction with one another cost-effectively in high quality. Furthermore, the frame can advantageously enhance the specific functions of the units and their interaction with each other. Advantageously for an increase in productivity along the product life cycle of an electric machine according to the invention, the separating device is provided on the frame for accessing the interior space outside the radial plane and outside of parallel planes, so that the interior space is outside the plane. Dialen level and outside the parallel planes accessible by the separation device is feasible.

The air gap is limited in radial directions perpendicular to the axial direction by stator and rotor. The rotor may have a device in order to be able to cooperate magnetically with the stator via the air gap, in particular with a winding fixed to the stator. The

Stator winding heads are disposed at the first axial end and the second axial end of the stator and are part of the winding - preferably several - windings, which is or are attached to the stator.

The radial plane divides a room into two parts, a first part of the room and a second part of the room. In the interior of an electric machine according to the invention, the radial plane divides the interior into two parts, a first part of the interior and a second part of the interior. A tangential direction is perpendicular to the axial direction and perpendicular to one of the radial directions. The radial directions extend from the axis of rotation in cross-sectional planes on which the axial direction is perpendicular. When operating an electric machine according to the invention as a generator, the rotor is offset by mechanical energy in a rotation about the axis of rotation. Due to the magnetic interaction between the rotor and the stator, the mechanical energy can be converted into electrical energy. The electrical energy can be taken from the winding, which is attached to the stator, for an electrical consumer.

During operation of an electric machine according to the invention as a motor, electrical energy is supplied via the winding and electrical energy is converted into mechanical energy by the magnetic interaction between stator and rotor. In this case, the rotor is set in rotation about the axis of rotation and it can be on a shaft mechanical energy a mechanical load in the form of a rotary motion are delivered.

The rotor may comprise the shaft for rotatable mounting in the first and second bearing devices.

The stator may include a laminated core comprising laminated sheets in the axial direction from the first to the second axial end of the stator. The laminated in the axial direction sheets can be used to guide the magnetic

Serve flow in an operation of an electric machine according to the invention.

The rotor may include a laminated core comprising laminated sheets in the axial direction from the first to the second axial end. The sheets stacked in the axial direction can also serve to guide the magnetic flux during operation of an electric machine according to the invention in the rotor in order to minimize losses due to the alternating magnetic field during operation of an electrical machine according to the invention.

Advantageously, the stator fixed to the frame has the fixing device for supporting the stator on the frame during operation of the electric machine.

For this purpose, the fixing device may advantageously have fixing units, wherein the stator is fixed with the fixing units against movement about the axis of rotation.

The fixing device may advantageously have fixing units, wherein the stator is attached to the fixing units on the frame. By means of the fixing units, the stator, in particular by means of a spatial distribution of the fixing units, can be inexpensively fixed or fastened to the frame with high quality. A series of electric machines according to the invention has the further advantage that the first electric machine and the second electric machine can advantageously be made available simply by advantageously adding, removing or exchanging units or devices of an electrical machine according to the invention. Among other things, this can be advantageously achieved in that the interior is accessible through the separator outside the radial plane and outside the parallel planes accessible.

A frame according to the invention also has the further advantage that the frame can be used for different electrical machines. Further advantageously, the frame can fix the stator and store the rotor in the first and second bearing device on the frame about the axis of rotation. A composite unit of the electric machine according to the invention can also advantageously comprise the frame with stator and rotor.

A casing according to the invention for an electric machine according to the invention also has the further advantage that it can have a low-cost construction. Among other things, the first device can advantageously be produced inexpensively for an electrical machine according to the invention, since advantageously no great demands are placed on centering units of the first device.

The sheath can fulfill other functions on the electric machine according to the invention in a cost-effective design.

When servicing an electric machine, work is performed on the electric machine. The service includes work that is carried out after installation of the electrical machine at a place of installation, usually after the first operation of the electrical machine, at or near the installation site. A method according to the invention for a service on an electric machine according to the invention also has the further advantage that, by making the interior accessible to the service on an electric machine according to the invention, advantageously low demands must be placed on the installation location with regard to a space requirement for the service. Thus, the service can be carried out on an electrical machine according to the invention cost in a high quality.

An inventive method for producing an electrical machine according to the invention also has the further advantage that in the production of an electrical machine according to the invention advantageously low dependencies between the production steps of the individual units of an electric machine according to the invention are present. The inventive production of an electric machine according to the invention can be done so cost-effective in a high quality, since no or only small waiting times arise.

An assembly of a first unit of an electric machine according to the invention with a second unit of an electric machine according to the invention can also be carried out without great demands on centering devices between the first and the second unit.

Advantageous embodiments of the invention are specified in the dependent claims. Thus, an embodiment of an electrical machine according to the invention is advantageous in which the separating device has a first separating device between the first device of the casing and the frame with detachable contact points for removing the first device of the casing from the frame. It is thus advantageous for the first part of the interior to be separated by the separating device with the first separating device between the first device of the casing and the frame outside the radial plane and outside the parallel plane. NEN be made accessible by the detachable contact points are separated from each other. The detachable contact points are located in a separation unit of the first separation device, wherein the frame comprises a part of the separation unit. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

The first separation device can advantageously have a plurality of separation units with detachable contact points in order to fix the first device to the frame.

In a further advantageous embodiment of an electrical machine according to the invention, the first device of the casing surrounds the interior space at least from the first to the second axial end of the stator. It can be made so advantageous cost, a tangential surface of the stator and fixing units of a fixing device through the separator on the frame outside the radial plane and outside the parallel planes accessible.

In a further advantageous embodiment of an electrical machine according to the invention, the frame has a fastening device for fastening the frame to a flange for operation of the electric machine, wherein the axis of rotation extends in a vertical direction. It can be made so advantageous cost by removing the first device of the shell and optionally a second device of the shell of the interior outside the radial plane and outside of the parallel planes accessible without the electrical machine must be removed from the flange. A machine according to the invention can thus remain installed at an installation location on the flange of another machine which is driven by or drives such an electric machine according to the invention. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost. The electric machine may include a flange device attached to the stator and the frame. Thus, the flange device can advantageously support the stator against a force acting on the stator weight and advantageously be advantageously made accessible by removing the first device of the shell and optionally a second device of the shell of the interior. In a further advantageous embodiment of an electrical machine according to the invention, the first device surrounds the interior space on a first side of the frame at least from the first to the second radial frame part. It can be made so advantageous cost, the first part of the interior on the first side of the frame by the separator on the frame outside the radial plane and outside the parallel planes accessible.

In a further advantageous embodiment of an electrical machine according to the invention, the separating device has a second separating device with detachable contact points for lifting the frame from a second device. It can be so advantageous the second part of the interior through the separator with the second separator between see the second device of the shell and the frame outside the radial plane and outside of the parallel planes are made accessible by the contact points are detached from each other. The releasable contact points are located in a separation unit of the second separation device, wherein the frame comprises a part of the separation unit. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost. Furthermore, the frame can advantageously cost-effectively form part of the shell.

In a further advantageous embodiment of an electrical machine according to the invention, the second device is an existing at a location of the electrical machine foundation. Thus, an electrical machine according to the invention can advantageously be used inexpensively in a high quality conditions existing at the installation site, in particular advantageously the existing foundation.

In a further advantageous embodiment of an electrical machine according to the invention, the shell has the second device. Thus, an electrical machine according to the invention can advantageously be offered at low cost in a high quality for various conditions at an installation site. The second device can advantageously be produced inexpensively for an electrical machine according to the invention, since advantageously no great demands are placed on centering units of the second device.

Advantageously, the second device may be a portable device. Thus, an electrical machine according to the invention can advantageously be delivered to a place of installation in a cost-effective manner in a high quality.

Advantageously, an electric machine according to the invention can convert electrical energy into mechanical energy during operation or vice versa with a power greater than 160KW, since an electrical machine according to the invention can advantageously withstand the forces occurring and can fulfill various conditions at the installation site.

The second device of the shell can under the frame with a mass of the frame, the stator and the rotor at least at a parting surface of the second device of the shell

Applying the force of gravity to the mass, wherein a portion of the weight force acts perpendicular to the at least one separation surface on the separation surface. The weight force is a force on the frame caused by the Earth's gravity field. Thus, an electrical machine according to the invention having a high quality along the product life cycle can be made available at low cost if these are set up at a place of installation without a suitable foundation. the aim is that the axis of rotation runs in a horizontal direction.

In a further advantageous embodiment of an inventive electrical machine, the second device has concrete. The advantageous properties of concrete, such as polymer concrete, mineral or cement concrete, can be used advantageously in an electric machine according to the invention. This is advantageously possible since an electrical machine according to the invention outside the radial plane and the parallel planes places little design conditions on the second device. This is also possible in an advantageous manner, since in a production according to the invention of an electrical machine according to the invention, small dependencies are present between the production steps of the individual units. For example, a reworking of individual units when assembling the electrical machine occurs in an advantageously small extent. Accordingly advantageous one can use the very high molding accuracy of concrete and make post-processing of the concrete advantageously largely superfluous. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost. In a further advantageous embodiment of an electrical machine according to the invention, the separating device has a third separating device with detachable contact points for removing an outer part guiding device from the frame. Advantageously, the second part of the inner space can be made accessible by the separating device with the third separating device between the outer part guiding device and the frame outside the radial plane and outside the parallel planes, by disengaging the contact points from one another. The releasable contact points are located in a separation unit of the third separation device, wherein the frame comprises a part of the separation unit. Thus, an electrical machine according to the invention with a high quality along the Produktlebenszyk- lus be made available. The outer partial guide device can be advantageously formed in an electrical machine according to the invention in a for a particular inventive electric machine, certain inventive series and / or a specific location advantageous shape for guiding a coolant flow in the interior or in an inventive electric machine or a specific Installation site not be attached to the frame, if this is not necessary for cooling the electrical machines according to the invention. The outer part guide device can advantageously be inexpensively made of a thin material. Thus, advantageously, the thin material can be brought into the shape of the outer partial guide device that is desired for the guidance of the coolant flow by deformation with little force.

In a further advantageous embodiment of an electrical machine according to the invention a terminal box for laying a line from the stator via the frame to the terminal box is attached to the frame. Thus, an advantageously low impairment is achieved by the line during a service or the manufacture of an electrical machine according to the invention. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

In a further advantageous embodiment of an electric machine according to the invention, this has a decoupling unit between the casing and the frame. Thus, a reduction in the excitation of oscillations or undesired forces that occur during operation of an electrical machine can advantageously be achieved inexpensively at a site. Among other things, a support surface of the

Decoupling be present on the frame and the first device or a second device of the envelope. The first device or the second device may Partially have a recess adjacent to the frame, which can accommodate the decoupling unit. Thus, advantageously, the desired reduction of the excitation of vibrations and undesired forces can already be considered in the production of an electrical machine according to the invention by appropriate installation of the decoupling unit. On the other hand, at first an electrical machine according to the invention can be produced without installation of the decoupling unit, be put into operation at the installation site without decoupling unit and then advantageously in a service on the electric machine according to the invention the installation of the decoupling unit at the installation site and / or in cooperation with another Machine to be customized. In this case, a change in dimensions of an electrical machine according to the invention can advantageously be avoided. Advantageously, the decoupling unit can have an adjusting device for adjusting its damping behavior. The decoupling unit can be made passive or can be actively designed with a connection for a control system for controlling the decoupling unit.

An electrical machine according to the invention may comprise the decoupling unit between the first radial frame part and the shell for adjusting the rigidity of the bearing in a region of the first bearing device. Thus, advantageously, a specific vibration behavior of an electric machine according to the invention for a certain speed range can be achieved, which is desired at the installation site for operation of an electric machine according to the invention. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

An electrical machine according to the invention may comprise decoupling units between the first axial frame part and the casing. Thus, advantageously, a small load of the other machine can be achieved, which is driven by an electric machine according to the invention or such drives. The low load can be achieved advantageously when changing a torque on the shaft. An electrical machine according to the invention may have corresponding decoupling units between the second axial frame part and the casing. Advantageously, the first axial frame part may be mounted at a first bearing point via the decoupling units on the shell, in particular the first or second device, and the second axial frame part at a second bearing point via the decoupling also on the shell, in particular the first or second device be stored, wherein a connecting line between the first and the second bearing point passes through the axis of rotation. Thus, advantageously, a change of the torque on the shaft can ideally be done without the generation of transverse forces or with damped transverse forces. The lateral forces can be harmful to the other machine or the electrical machine as undesired forces, eg damaging the shaft. To reduce the unwanted forces, a minimization of the undesired forces can be performed by the fixing device allows adjustment of the first and second bearing point, which can change a relative position of the line connecting the first and second bearing to the axis of rotation. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

In a further advantageous embodiment of an electrical machine according to the invention, the first bearing device on the frame is removable from the first radial frame part in a second radial direction perpendicular to the radial plane, and the second bearing device on the frame is out of the second radial frame part in the second radial direction Removable perpendicular to the radial plane. Thus, in a service advantageous the stator with the rotor of the

Frame can be removed in the second radial direction. In a production of an electrical machine according to the invention, the stator can be advantageously connected to the rotor in the frame. men are used in the second radial direction. The first bearing device on the frame can be removed from the first radial frame part in a second radial direction perpendicular to the radial plane if the first radial frame part has a recess for the first bearing device with an opening which has an enveloping surface of the first bearing device can enclose first storage device. The same applies to the second bearing device and the second radial frame part.

In a further advantageous embodiment of an electrical machine according to the invention, the fixing device has an adjusting device for adjusting the air gap by changing a position of the stator fixed to the frame relative to the frame. Thus, advantageously with the fixing device advantageously made accessible in the interior, the setting of the air gap with a high quality cost can be carried out even after the installation of an electric machine according to the invention at the site.

The fixing device may include fixing units having adjusting means for adjusting the air gap by changing a position of the frame-fixed stator relative to the frame. Thus advantageously the adjustment of the air gap over a length of the air gap in the axial direction can take place inexpensively.

In a further advantageous embodiment of an electrical machine according to the invention, the fixing device comprises a stiffening element extending in the axial direction for stiffening the stator. Thus, a gap width of the air gap between the rotor and stator can be maintained cost-effectively over a length of the air gap in the axial direction in a high quality.

In a further advantageous embodiment of an electrical machine according to the invention, the stiffening element has a fixing unit of the fixing device. So can the fixing device can be manufactured inexpensively in high quality. This is the case, in particular, when a part of the fixing unit is connected to the stiffening element in a material-locking manner.

In a further advantageous embodiment of an electric machine according to the invention, the stiffening element extends within an envelope surface of the stator which is viewed in the axial direction. Thus, the stiffening element influences a flow of a coolant at a tangential surface of the stator in the axial direction and in a tangential direction only to a small extent. The slight influence of the axial or tangential coolant flow through the stiffening element causes a lower energy requirement for the generation of the axial or tangential flow and allows the location of the site adapted cooling of the electric machine. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

In a further advantageous embodiment of an electrical machine according to the invention, the stiffening element can guide a coolant in a direction perpendicular to the axial direction extending radial direction of the stator. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

The stiffening element can advantageously additionally guide the coolant in the axial direction. Thus, the stiffening element can reduce mixing of coolant streams flowing in the tangential direction to cool the stator at the tangential surface. It can thus be achieved an advantageous better cooling with a low energy consumption for the generation of the coolant flows. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost. In a further advantageous embodiment of an electrical machine according to the invention an outer guide device is attached to the first device. Thus, a guide of a coolant flow can advantageously be carried out inexpensively and the interior outside the radial plane and outside of the parallel planes are advantageously made accessible by the separation device, since by removing the first device of the shell from the frame already the outer guide device is removed. Thus, an electric machine according to the invention can be provided at low cost in a high quality along the product life cycle. The outer guide device can also be advantageously made inexpensively from a thin material. Thus, advantageously, the thin material can be brought into the shape of the outer guiding device that is desired for the guidance of the coolant flow by deformation with little force. Advantageously, various first devices can be designed for different cooling principles, and one of the various first devices can advantageously be selected for a specific electrical machine according to the invention and placed on the frame. The various first devices may comprise outer guide devices which effect a guidance or separation of one or more coolant flows in the axial, radial or tangential direction and / or a separation of a coolant flow from another coolant flow in the axial, radial or tangential direction cause. The leadership or separation can be done in cooperation with a stator. The stator may be, for example, a stator in which the air flows in a radial direction from an inner side to an outer side of the stator through channels of the stator.

Advantageously, the first device may also have a heat exchanger in which a waste heat of an inventive electric machine is discharged from the coolant flow to a separate from the coolant flow in the outer coolant flow in the heat exchanger, which transports the waste heat from the electric machine according to the invention.

In a further advantageous embodiment of an electrical machine according to the invention, the stator has a flow device for cooling the electric machine. Thus, the flow device can be advantageously made available for a service and a manufacture of an electric machine according to the invention by the separator outside the radial plane and the parallel plane and the cooling of the electric machine advantageously also on the stator with high quality cost.

Due to the advantageous accessibility of the stator to the flow device, work during the service or during production on an electrical machine according to the invention on the flow device, in particular in the region of a tangential surface, can be carried out cost-effectively in a high quality along the product life cycle.

The flow device may have recesses on an outer surface of the stator. Thus, advantageously, the recesses can easily be cleaned to guide a flow of coolant by cleaning the outer surface of the stator, wherein the outer surface of the stator can be advantageously made accessible by the separating device between the shell and the frame. Thus, an electric machine according to the invention can be provided at low cost in a high quality along the product life cycle. The flow device may comprise pipe sections for cooling the stator. It may be beneficial to access the interior of the stator with the stator not only for flow devices with a gaseous coolant, such as air, but also be provided with a liquid coolant cost in a high quality. In the service or the manufacture of an electric machine according to the invention can advantageously be subjected to the pipe sections and the connections between the pipe sections of a visual inspection for leakage of the pipe sections or connections. Advantageously, due to the advantageous access of the interior outside the radial plane and outside of parallel planes in a shaft of the rotor, which is designed as a hollow shaft and is flowed through by a liquid cooling medium, a visual check for leakage of a connection between rotating parts and fixed parts made become. In a further advantageous embodiment of an electrical machine according to the invention, the flow device has recesses, with longitudinal extensions of the recesses extending in a plane perpendicular to the axial direction. In the case of an electrical machine according to the invention, the recesses can advantageously be made available at low cost in a high quality. Since an electric machine generally has a greater extent in the axial direction relative to the radial direction, a person performing work on the service on an electric machine according to the invention or in its manufacture can check a comparatively larger proportion of a recess in a radial direction , clean and / or repair, as with a portion of a recess, if it would extend in an axial direction. This can be done in particular advantageous if the longitudinal extents of the recesses extend in tangential directions.

In a further advantageous embodiment of an electrical machine according to the invention, the casing has on one side of the electric machine with the first axial frame part a first opening for cooling the electric machine, wherein the first opening is connected to one on a tandem. gentialen surface of the stator adjacent first space is connected. It is thus advantageous for a coolant stream to flow through the first opening into the electric machine according to the invention, to be guided in a tangential direction over the tangential surface of the stator and to flow out of an electrical machine according to the invention at an outlet opening. For this purpose, the outlet opening is connected to the first free space adjoining the tangential surface of the stator. In an electrical machine, since an extension of the stator in a direction perpendicular to the axial direction is in many cases shorter than an extension of the stator in the axial direction, the stator can advantageously be cooled at a lower cost in a high quality, because the coolant flow must be in one Electric machine according to the invention only an advantageous short

Flow path along the tangential surface of the stator, which heats the coolant flow by a waste heat of the stator. Advantageously, the flow path of the coolant flow in the first free space can be additionally shortened by the opening between the side with the first axial frame part and a side with the second axial frame part in the tangential direction sequentially more openings are present, the inflow or

Outflow opening for the coolant flow are.

The shell can have a second opening on the side of the electric machine with the second axial frame part, the second opening being connected to the first free space adjoining the tangential surface. Advantageously, a coolant can advantageously flow at a high quality for an electrical machine according to the invention through the first opening into the first free space, receive the waste heat from the stator there on the tangential surface of the stator and an electrical machine according to the invention over an advantageously short distance leave via the second opening. A boundary of the first or second opening can be advantageously formed by a recess in the shell and the first and second axial frame part. So can one Electrical machine according to the invention can be provided cost-effective in a high quality along the product life cycle. The first clearance may include guide means at the first and second axial ends of the stator. The guide devices advantageously direct the flow of coolant in tangential directions across the tangential surface of the stator. In a further advantageous embodiment of an electrical machine according to the invention, the shell on the side of the electric machine with the first axial frame part on a further first opening for cooling the electric machine, wherein the first axial frame part between see the first opening and the other first opening is available. Thus, advantageously, a coolant flow can be advantageously divided into a first tangential coolant flow, which can flow through the first opening into the first clearance, and into a second tangential coolant flow, which can flow into the first clearance through the second opening. The further first opening is advantageously connected via an adjacent second free space with a further second opening, wherein the second axial frame part between the second opening and the further second opening is present. The second tangential coolant flow can advantageously flow through the further first opening into the second free space. The tangential surface of the stator has a first part, which is present in the first part of the interior, and a second part, which is present in the second part of the interior. The stator can thus be advantageously cooled over the first part of the tangential surface by the first tangential coolant flow and over the second part of the tangential surface by the second tangential coolant flow.

In a further advantageous embodiment of an electric machine according to the invention, the casing has on one side of the electric machine with the second radial frame Menteil a first axially directed opening for cooling the electric machine, wherein the opening is connected to an axially permeable space. Thus, a fan can advantageously be arranged to save space on the side of the electric machine with the second radial frame part, which can promote a coolant flow through the entire axially directed opening.

In a further advantageous embodiment of an inventive electric machine, a guide device between the axially permeable space and the first space in the interior of the electric machine is arranged. It can be advantageously achieved a low mixing between the colder coolant in the axially permeable free space and the warmer coolant in the first space. Thus, a low energy requirement is necessary for cooling the electric machine advantageous. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be provided at low cost. Furthermore, this can advantageously be attached to the stator with releasable connecting elements on the stator. It can be so advantageous simply cleaned at a service on an electric machine according to the invention recesses for guiding a flow of coolant on an outer surface of the stator after a release of the connecting elements and removing the guide device by cleaning the outer surface of the stator.

The guide device may include a passageway for a coolant in the axial direction along the tangential surface. Thus, advantageously, a colder coolant can be guided more uniformly along the stator in the axial direction into the first free space to the tangential surface of the stator from the axially permeable free space. Thus, a more uniform temperature distribution of the coolant in the axially permeable free space and in the first free space in the axial direction can advantageously be achieved. This leads to an advantageous better cooling with a Low energy consumption in an electrical machine according to the invention.

In a further advantageous embodiment of an inventive electric machine, a guide device is arranged in the interior at the first axial end of the stator. It can be so advantageous space-saving an axial flow of coolant into two tangential streams with a large width, which may correspond to the length of the tangential surface of the stator in the axial direction, and the two tangential streams in a short flow over the tangential surface of the stator to the Cooling to be steered. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

The guide device may be a first axial boundary of the axially permeable free space at the first axial end of the tangential surface. Thus, the guide can cost-effectively consist of a high quality mainly of a plate.

The guide device can be arranged at the first axial end of the stator and an opening as a passage from the first axially permeable space for cooling of

Have stator winding heads. It can thus be advantageously removed for the stator winding heads a sufficient amount of a coolant flow from the axially permeable space.

The guide device may delimit a first portion of the interior space from a remaining interior space, wherein in the remaining interior space a part of the tangential surface of the stator situated between the stator winding heads is located and the enclosure has an opening for cooling the first part of the interior space the stator winding heads extend into the first portion of the interior. Thus, advantageously, the stator winding heads can be replaced by a coolant cooled, which leaves in another way an electrical machine according to the invention through the shell or flows through them as the coolant flowing along the located between the Statorwicklungsköpfen part of the tangential surface of the stator. This leads to an advantageously better cooling with a low energy consumption in an electrical machine according to the invention.

In a further advantageous embodiment of an inventive electrical machine, the guide device extends in the axial direction at least from a first axial end of a winding of the stator extends to a second axial end of the winding of the stator, wherein the guide device between the axial

permeable free space and the first free space in the interior of the electrical machine is arranged. Thus, advantageously, a more uniform temperature distribution of the coolant from the first axial end of the winding of the stator to the second axial end of the winding of the stator in the axial

permeable free space and can be achieved in the first free space and advantageously from the axially permeable space a colder coolant uniformly along the stator, i. from the first axial end of the winding of the stator to the second axial end of the winding of the stator, are guided in the axial direction in the first clearance to the tangential surface of the stator. Thus, a low energy requirement is necessary for cooling the electric machine advantageous. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be provided at low cost.

In a further advantageous embodiment of an electrical machine according to the invention, the stator has a first and a second protective tube, wherein the first protective tube between the first radial frame part and the first axial end of the stator is fixed and the second protective tube between the second axial end of Stators and the second radial frame part is attached. It can be so Partly a composite unit that includes frame, stator, rotor, first and second thermowell are provided inexpensively in high quality. The first and second protective tube can advantageously be fastened to the stator for a service or the production of an electrical machine according to the invention in order to advantageously assemble the assembled unit cost-effectively.

The first protective tube may have at its axial end, which faces the first radial frame part, an axial projection which extends in radial directions to the shaft. Thus, advantageously, penetration of dirt particles-in the axial direction into the air gap can not be reduced or virtually eliminated. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost. Advantageously, the second protective tube can have a corresponding axial boundary.

In a further advantageous embodiment of an electric machine according to the invention, an opening of the first protective tube is connected via an overflow channel to an opening of the second protective tube. Thus, a coolant flow which flows from the first protective tube through the rotor and / or stator into the second protective tube can advantageously be conducted in a high quality back into the first protective tube via the overflow channel. In order to effect the flow of the coolant flow, the rotor may have corresponding delivery devices. Among other things, the overflow during work during service on an electric machine according to the invention or in the manufacture of an electric machine according to the invention by the

Separator on the frame advantageously accessible feasible. Among other things, advantageously the overflow can be removed or installed. In an electrical machine according to the invention, in which the overflow _{2 Q}

is not yet installed or removed, the opening of the first and second thermowell advantageously allow visual inspection or advantageously allow access to parts of an electrical machine according to the invention within the first and second thermowell. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

In a further advantageous embodiment of an electric machine according to the invention, the rotor has a shaft for rotatably supporting the rotor in the first and second bearing device, wherein the shaft in the axial direction has a bore for transporting a waste heat of the electric machine to a heat dissipation device, wherein the heat dissipation device is located at the first or second axial end of the rotor in the axial direction within the frame. Thus, advantageously, a compact unit of stator, rotor and frame may comprise a cooling device, wherein the cooling device may comprise the bore and the heat dissipation device. Further advantageously, a coolant flow, which absorbs waste heat from the heat dissipation device, impeded by the frame outside the radial plane and the parallel planes only to a small extent. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost.

In a further advantageous embodiment of an inventive electrical machine, the rotor has a shaft for rotatably supporting the rotor in the first and second bearing device, wherein the shaft in the axial direction has a bore for transporting a waste heat of the electric machine to a heat dissipation device the heat-dissipating device is outside the frame in the axial direction. Since the frame enables cooling of the first and second bearing devices also with a coolant flow which is outside the radial plane and the parallel len plane over the first and second bearing device, in particular in an axial direction, flows, the first or second bearing device, is transported by the waste heat in the axial direction outside the frame, be better cooled and thus protected from harmful heating. Thus, an electrical machine according to the invention with a high quality along the product life cycle can be made available at low cost. In one embodiment of an inventive electrical machine according to the invention, the rotor is positioned in a step in a bore of the stator, in a further process step, the stator is conveyed to the frame with the rotor, wherein the rotor is supported on the stator. In a subsequent method step, the stator is then inserted with the rotor in the frame. In a further subsequent method step, the stator is fixed with the fixing units on the frame and fixed the first and the second bearing device. It can be made so advantageous after fixing the stator and the first and second bearing device on the frame a visual inspection along the stator for possible damage in the axial direction. Thus, an electrical machine according to the invention can be provided in a cost-effective manner in a high quality.

It can be advantageously adjusted in a further subsequent process step with the adjustment of the air gap, the see in the radial directions in the bore between the rotor and stator is present. An assembling of the stator, rotor, frame, first and second bearing device of an electric machine according to the invention can advantageously be carried out without great demands on centering devices, since the air gap with the adjusting device can advantageously take place after a fixation of the stator and the first and second bearing device on the frame , In one embodiment of a method according to the invention for a service on an electric machine according to the invention, the first device of the casing of the electric machine according to the invention is removed from the latter. If the service requires accessibility of the second part of the interior electrical machine according to the invention, the frame with the stator and the rotor is lifted off a second device of the casing. Advantageous embodiments of electrical machines according to the invention, inventive series of electric machines, frames according to the invention, casings according to the invention, as well as methods according to the invention for a service on an electrical machine and method according to the invention for producing an electric machine advantageously result by combining some or more of the described features. In the series of electrical machines according to the invention, a series according to the invention comprises electrical machines according to the invention which differ from one another in some or more of the features described.

The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the exemplary embodiments, which are explained in more detail with reference to the figures.

1 shows a first embodiment of an electrical

Machine,

2 shows a detail of a second embodiment of an electrical machine,

3 shows a section perpendicular to the axial direction

by a second device of the shell of the first

Embodiment of an electric machine,

4 shows a view of an upper side of a third embodiment of an electrical machine, wherein is looked through by a first device of a shell,

5 shows a section through the third embodiment of an electrical machine,

6 shows two sections separated by an axis of rotation through a fourth exemplary embodiment of an electrical machine,

7 shows a fifth embodiment of an electrical

Machine,

8 shows a detail of a sixth embodiment of an electrical machine,

9 shows a view of an upper side of a seventh embodiment of an electrical machine, looking through a first device of an envelope,

10 shows a three-dimensional section of an eighth embodiment of an electrical machine,

11 shows a ninth embodiment of an electrical

Machine,

12 shows an embodiment of a series of electrical machines,

13 shows an embodiment of a first device of a casing for an electric machine, FIG. 14 shows an embodiment of a frame for a motor vehicle

electric machine,

15 shows the first embodiment of an electrical

Machine at a place of installation,

16 is a view seen in the axial direction of the eighth

17 is a top view of a tenth embodiment of an electric machine looking through a first device of a shell;

18 shows a section through an eleventh embodiment of an electrical machine.

1 shows a first embodiment of an electric machine 1, which comprises a rotor 4, which is about an axis of rotation 5 is rotatably mounted, wherein the rotation axis 5 extends in an axial direction 3. Furthermore, the electric machine 1 comprises a stator 7, which extends along the axis of rotation 5 from a first axial end 701 to a second axial end 702 of the stator 7 and cooperates with the rotor 4 in an operation of the electric machine 1 via an air gap 6, an inner space 10, wherein the stator 7 and the rotor 4 are located in the inner space 10, and a shell 11, which has a first device 111 which surrounds the inner space 10 at least partially. In addition, the electric machine 1 has a frame 12, which defines an extension of the interior 10 in a radial plane 13 with a first axial frame part 123, a first radial frame part 122, a second axial frame part 121 and a second radial frame part 124, wherein the radial plane 13 is spanned by the axial direction 3 and a first radial direction 14 extending perpendicular to the axial direction. In addition, the electric machine 1 comprises a separating device 2 on the frame 12. The stator 7 has a fixing device 15 with which the stator 7 is fixed to the frame 12. The rotor 4 is rotatably mounted at its first axial end in a first bearing device 16 and at its second axial end in a second bearing device 17 on the frame about the axis of rotation 5. The interior space 10 can be accessed outside of the radial plane 13 and outside of parallel planes 131 by the separating device 2. The parallel planes 131 intersect the frame 12 and extend parallel to the radial plane 13. In FIG. 1, the parallel plane 131 is shown as representative of the parallel planes. If one plots all the parallel planes intersecting the frame 12 in FIG. 1, the stator 7 extends in a direction perpendicular to the parallel planes and an opposite direction beyond the parallel planes. In the electric machine 1, the separating device 2 has a first separating device 211, 212 between the first device 111 of the casing 11 and the frame 12 with detachable contact points for the removal of The first separating device 211, 212 in this case comprises a separating unit, which has a separating surface 212 of the frame 12 and a separating edge 211 on the first device 111. Thus, the first device 111 can be lifted off the frame 12 for removal. The releasable contact points between the parting surface 212 and the separating edge 211 are no longer in contact after removal of the first device 111 from the frame 12. Thus, the stator 7 is made accessible in a first part of the inner space 10 above the radial plane 13 and above parallel planes 131. The frame 12 in this case comprises the separating surface 212 as part of the separating unit of the first separating device 211, 212. Thus, the fixing device 15 of the stator 7 is accessible, and the air gap 6 can be adjusted with an adjusting device 152 having the fixing device 15 by changing a position of the stator 7 fixed to the frame 12 with respect to the frame 12. The fixing device 15 has four fixing units 151, wherein the stator 7 is fixed with the fixing units 151 against movement about the rotation axis 5. In the electric machine 1, the stator 7 is fixed to the frame 12 with the fixing units 151. The fixing device 15 has a plate at the first axial end 701 and at the second axial end 702 of the stator 7, wherein components of the fixing units 151 are connected in a material-locking manner to the plates. The fixing units 151 fix the stator 7 on the first and second axial frame parts 123, 121 against movement about the rotation axis. For this purpose, the fixing device 15 has two fixing units 151 on one side of the electric machine 1 with the first axial frame part 121, and also two fixing units 151 on one side of the electric machine 1 with the second axial frame part 123. The four fixing units 151 each have an adjustment device 152. Thus, advantageously, the stator 7 can be fixed inexpensively and the setting of the air gap 6 over a length in the axial direction 3 done. The fixing units 151 are advantageously fixators for this purpose. The stator 7 has a laminated core, which in the axial direction 3 from the first to to the second axial end 701, 702 of the stator 7 has laminated sheets 710. The plates 710 are sandwiched between the two plates of the fixing device 15 in the axial direction 3. The fixing device 15 comprises a stiffening element 153 extending in the axial direction 3 for stiffening the stator 7. The stiffening element 153 is connected to the fixing device 15, in particular the plates, at the first and second axial ends 701 and 702 of the stator 7. The stiffening element is in the first embodiment of the electric machine 1, a tie rod, which cooperates advantageously with the fixing device 15 to stiffen the stator. It can be achieved so advantageous cost, a uniform air gap 6 over its length in the axial direction 3. The stiffening element 153 extends in an axial recess, which form the plates 710 of the laminated core. Thus, the stiffening element 153 extends within the seen in the axial direction 3 curve of the stator 7, in particular an envelope surface of a plate 710. It is a coolant flowing in a flow direction 19 in or against the axial direction 3 via the stator 7, only in slightly influenced. The same applies to a flow of coolant in a tangential direction that is perpendicular to the axial direction 3 and perpendicular to one of the radial directions. The fixing device 15 may have further stiffening elements 153 extending in the axial direction 3 for stiffening the stator 7, which are not shown in FIG. These can be arranged uniformly distributed on a surface of the stator 7.

In one embodiment for producing an electrical machine according to the invention, for example the first embodiment of the electric machine 1, the rotor 4 is positioned in a process step in a bore of the stator 7, in a further process step, the stator 7 with the rotor 4 to the frame 12 transported, wherein the rotor 4 is supported on the stator 7. In a subsequent method step then the stator 7 with the rotor 4 in the Frame 12 used. In a further subsequent method step, the stator 7 is fixed to the frame 12 with the fixing units 151, and the first and second bearing devices 16, 17 are fixed to the frame with the fastening elements 161. In a further subsequent method step, the air gap 6, which is present in the radial direction in the bore between the rotor 4 and the stator 7, is adjusted with the adjusting device 152. The stator 7 has a flow device 20 for cooling the electric machine 1. The flow device 20 has recesses on the metal sheets 710 which form channels 1531 for cooling the electrical machine 1 with the coolant flowing in the flow direction 19 and extending in the axial direction 3. For cooling the electrical machine 1, the shell 11 on one side of the electric machine 1 with the second radial frame part 124, a first axially directed opening 470 for cooling the electric machine 1, wherein the axially directed opening 470 connected to an axially permeable space 10 is. At the first axially directed opening 470, a fan 52 is arranged on the side of the electric machine 1 with the second radial frame part 124, the coolant from outside the electric machine 1 through the axially directed opening of a fan shroud 53 through the entire axially directed opening 470 for the fan 52 in the flow direction 19 in the electric machine 1 can promote. The axially directed opening of the fan shroud 53 is located on a side of the fan 52 facing away from the radial frame part 124. The coolant flows in the interior 10 via stator winding heads 704, via the flow device 20 and stator winding heads 703 and can guide the electric machine 1 through second axially directed openings 1111 leave the first device 111 of the shell 11 and second axially directed openings 1121 a second device 112 of the shell 11. The

Statorwicklungsköpfe 703, 704 are disposed at the first axial end 701 and the second axial end 702 of the stator 7 and are part of one - preferably several - windings, which is attached to the stator or are. The separating device 2 has a second separating device 18 with detachable contact points for lifting the frame 12 from a second device 112. The second separating device 18 has a first separating unit 181 and a further first separating unit 182. The first separation unit 181 and the further first separation units 182 comprise bores 1811, 1812 (see FIG. 14) on a surface of the frame 12 and detachable connections from the second device 112 through the first axial frame part 123 and the second axial frame part, respectively 121 run. The releasable connections are made by a screw-nut connection with the screw or a threaded rod at one or both ends passing through the bore 1811 (see FIG. 14) on the surface of the frame 12. Each releasable connection points between thread and

Nut detachable contact points on, with the releasable contact points after loosening and removing the nuts from the thread are no longer in contact. In FIG. 1, the nuts can be seen on the separating surface 212 of the second axial frame part 121. The detachable contact points are located in the first separation unit 181 and the further first separation units 182 of the second separation device 18, the frame 12 comprising the bores 1811, 1812 as part of the first separation unit 181 and the further first separation units 182. The first bearing device 16 is attached to the first radial frame part 122 by fasteners 161. Two of the fasteners 161 and the shaft of the rotor 4 lie on a line through the connecting portions of the first radial frame part 122 with the first axial frame part 123 and the first radial frame part 122 with the second axial

Frame part 121 runs. Thus, an electrical machine is advantageously provided inexpensively in a high quality, since the interior 10 is advantageously accessible outside the radial plane 13 and outside of parallel planes 131 accessible by the separating device 2. The second

Device 112 of the shell 11 is a transportable device made of a metal construction and has fastening devices 1122 for the electric machine 1 in order to to fix these at a place of installation. The transportable device may also advantageously consist predominantly of a metal casting. In the text mentioned features of exemplary embodiments, which are not provided with reference numerals in the FIG 2 to FIG 17 to the exemplary embodiments, are advantageous low cost as in the embodiment of FIG 1 executed.

3 shows a section perpendicular to the axial direction 3 through the second device 112 of the shell 11 of the first embodiment of the electric machine 1. The second device 112 has a separating surface 1820 in which a bore 1810 of the first separation unit 181 for a screw is located. The second device 112 of the shell 11 carries the frame with a mass of the frame 12, the stator 7 and the rotor 4 at least at a parting surface 1820 of the second device 112 of the shell 11 under the action of gravity on the mass, with a proportion of the weight perpendicular to the at least one separating surface 1820 acts on the separating surface 1820.

2 shows a detail of a second exemplary embodiment of an electrical machine 102, wherein the stator of the electric machine 102 has a stiffening element 1503 with a fixing unit 1504 of a fixing device 1500. The stiffening element 1503 may guide a coolant in a direction perpendicular to the axial direction 3 extending radial direction 14 from the stator. The stator has plates 711 other than the stator 7 of the first embodiment of the electric machine 1, the stator of the electric machine 102 of the second embodiment

Laminated core comprising laminations 711 layered in the axial direction 3 from the first to the second axial end of the stator, wherein recesses 201 of a flow device 21 of the stator have longitudinal extensions which are in a plane perpendicular to the axial direction 3 in tangential directions run. A tangential direction is perpendicular to the axial direction 3 and one of the radii All directions, wherein the first radial direction 14 is one of the radial directions. The stator in the FIG 2 has a tangential surface, wherein between the

Statorwicklungsköpfen 703, 704 part of the tangential surface 433 of the stator is mainly formed by the plates 711 of the laminated core. The electric machine 102 includes a rotor having a shaft 403.

4 shows a view of an upper side of a third exemplary embodiment of an electrical machine 103, wherein a first device of a shell of the electric machine 103 is viewed. The electric machine 103 comprises a stator 740 which has a flow device 22 (see FIG. 5) for cooling the electrical machine 103 with recesses 201, wherein longitudinal extensions of the recesses 201 extend in a plane perpendicular to the axial direction 3 in tangential directions. The recesses 201 are formed by sheets stacked in the axial direction 3. For this purpose, the sheets 711 of the second embodiment of the electric machine 102 shown in FIG 2 can be used. A coolant, in particular air, is conveyed from an environment of the electric machine 103 through a heat dissipation device 51 into an interior of the electric machine 103 as an axial coolant flow, thereby flowing along a flow direction 191 above and below the second radial frame part 124 into first and second Part of the interior of the electric machine 103 in an axially permeable space, which extends from a first axially directed opening 47 (see FIG 5) for cooling the electric machine 103 to a guide 43. The guide 43 is a first axial boundary of the axially permeable space. The guide device 43 is arranged at the first axial end 741 of the stator 740. The tangential surface 433 between the stator winding heads 703, 704 is a lateral surface of the stator 740. The guide device 43 is a plate which has openings 431 as a passage to the axially permeable space for cooling stator winding heads 703, 704. has. The stator winding heads 703, 704 to be cooled are located within a first protective tube 44. The guide device 43 delimits a first portion of the interior space from a remaining interior space, wherein in the remaining interior space the portion of the tangential surface 433 located between the stator winding heads 703, 704 Stators 740 is located, and a sheath 1311 (see FIG. 13) of the electric machine 103 has an opening 1112 for cooling the first part of the inner space, wherein the Statorwicklungsköpfe located within the protective tube 44, extend into the first portion of the interior. Thus, a sufficient amount of coolant flows in the flow direction 192 via the protective tube 44 and leaves the electric machine 103 through the sheath 1311 in a different way than the coolant, along the part of the tangential surface 433 of the stator 740 located between the stator winding heads 703, 704 flows and the electric machine 103 through a first opening 1110 of the sheath 1311 leaves (flow directions 191, 193). The electric machine 103 has a guide device 42, which is arranged between the axially permeable free space 41 and a first free space 50 (see FIG. 5) in the interior of the electrical machine 103. The guide device 42 is attached to the stator 740 of the electric machine 103 with releasable connection elements. For this purpose, the stator 740 may have holes with threads that allow a detachable connection with screws. The guide device 42 has, in the axial direction 3, along the part of the tangential surface 433 of the stator 740 between the stator winding heads 703, 704, a passage means 421 for the coolant. Thus, a colder coolant can be more uniform from the axial

permeable space 41 along the stator 740 in the axial direction 3 in the first free space 50 to the tangential surface of the stator 740 to flow, as shown with the flow directions 191.193 in FIG 4.

In the electric machine 103 according to FIG. 4, a second device 1123 (see FIG. _4Q

ner side of the electric machine 103 with the first axial frame part 123, a further first opening 1120 for cooling the electric machine 103, wherein the first axial frame part 123 between the first opening 1110 and another first opening 1120 is present. This can also be seen from FIG. 7, which shows a fifth exemplary embodiment of an electrical machine 105 with a first device 72 and the second device 1123, which are identical to the first and second devices 72, 112 of FIG. One side of the electric machine 103 with the second axial frame part 121 has a further second opening corresponding to the further first opening.

The axial coolant flow in the flow direction 191 is formed by the guide device 42 into two partial streams with a large width, the length of the between the

Statorwicklungsheads 703,704 located portion of the tangential surface 433 of the stator in the axial direction 3 corresponds, converted and the partial flows are in a short flow path in the flow direction 193 over a first part of the tangential surface of the stator, which is present in a first part of the interior to its cooling is directed and guided out of the electric machine 103 through the first opening 1110 and the second opening 1109. The same applies to a second part of the tangential surface of the stator which is located in a second part of the interior, i. in the second device 1123. The second part of the tangential surface is accordingly cooled with a second tangential coolant flow, which comprises two partial flows, which are guided out of the electrical machine 103 through the further first opening 1120 and the further second opening.

5 shows a section through the third embodiment of the electric machine 103, wherein this machine 103 comprises a rotor 54. The rotor 54 has a shaft 405 for rotatably supporting the rotor 54 in the first and second bearing device 16,17, wherein the shaft 405 in the axial direction 3, a bore 4051 for transporting a waste heat of ₁

electric machine 103 to the heat dissipation device 51, wherein the heat dissipation device 51 is in the axial direction 3 outside of the frame 12. The first and the second bearing device 16, 17 have roller bearings or plain bearings. The first and the second protective tube 44, 46 has at their axial end, which faces the first radial frame part 122 or the second radial frame part 124, an axial boundary 443, 463, which extends in radial directions to the shaft 405. The axial projection 443, 463 has a seal around the shaft 405, which advantageously advantageously virtually excludes the penetration of dirt particles in the axial direction 3 into the air gap 6. The rotor 54 has a laminated core, which has 3 layered sheets in the axial direction. The rotor 54 has a device in order to be able to interact magnetically with the stator 7, in particular with the winding fastened to the stator 7, above the air gap 6. In the third embodiment of the electric machine 103, the rotor in the axial direction 3 extending through the laminated core rods, which are shorted at the two axial ends by a ring. The rotor 54 is thus a squirrel cage. During operation of the electric machine 103, the rotor heats up, in particular the short-circuit winding. The laminated core of the rotor 54 is fixed to a portion of a shaft 405 in which the bore 4051 extends. The bore 4051 also extends in the axial direction 3 into an area outside the frame 12. Thus, a coolant present in the bore 4051 can transport the waste heat of the rotor 54 to the heat dissipation device 51. In the third embodiment of the electric machine 103, the bore 4051 has a thermosyphone which transports the heat from the region of the shaft 405 with the laminated core to an end of the shaft 405 with the heat dissipation device 51. At the end of the shaft 405 with the heat dissipation device 51, the heat is removed by the heat dissipation device 51 via the axial coolant flow. ₂

6 shows two sections separated by an axis of rotation 5 through a fourth embodiment of an electrical machine 104, wherein a stator of the electric machine 104 has pipe sections for cooling the stator. The stator has the laminations 710 layered in an axial direction. The plates 710 have recesses in an axial direction 3, in which tube sections 61 are guided from a first axial end of the stator to a second axial end of the stator. The pipe sections 61 are connected to a pipe system which is secured in a meandering manner on a tangential surface 63 of the stator guided by the recesses. The ends of the piping system are guided out of a shell at one axial end of the electrical machine 104, with ports 611 of the piping system on the shell for supplying and discharging a liquid coolant. The electric machine 104 includes a rotor 460 having a shaft 406 for rotatably supporting the rotor 460 in the first and second bearing devices 16, 17, the shaft 406 having a bore 4061 for transporting waste heat of the electric machine 104 in the axial direction 3 to a heat dissipation device 60, wherein the heat dissipation device 60 is located at the first or second axial end 461, 462 of the rotor 460 in the axial direction 3 within the frame 12. For this purpose, the electric machine 104 according to FIG. 6 has a thermosyphone 4062 in the bore 4061. The heat dissipation device 60 may advantageously draw in a gaseous refrigerant cooled by flowing or flowing around the piping system in an area in the axial direction 3 between the second axial end 462 of the rotor 460 and the second radial frame part 124, and the heated gaseous refrigerant to the area lead the pipe system for cooling with the liquid coolant. For this purpose, the heat dissipation device 60 is rotatably connected to the shaft 406. The pipe system of the fourth embodiment leads in the region of the heat dissipation device 60 a liquid coolant, which in the operation of the electric machine 104 usually has a lower temperature than the gaseous coolant, which flows past the pipe system or flow around the pipe system to be cooled. If this is not the case, the ports 611 are used to supply cooled coolant to the electric machine 104, and the heated coolant at other ports of the piping system located closer to the first bearing device in the axial direction 3 than the heat output device 60.

7 shows a fifth exemplary embodiment of an electric machine 105. The electric machine 105 has a decoupling unit 70 between the casing, which has the first device 72 and the second device 1123, and the frame 12. The electric machine 105 has the decoupling units 70 between the first axial frame part 123 and the second device 1123 of the sheath. On the side with the second axial frame part 121, the electric machine 105 has decoupling units 70 between the second axial frame part 121 and the second device 1123 of the sheath. The electric machine 105 has a cover 71 on the second device 1123, which conceals a passage in the second device 1123, wherein the electrical machine 105 in the passage no decoupling unit 80 for adjusting the rigidity of the storage in a region of the first storage device has direction. The electric machine 105 has a separating device with a first separating device, between the first device 72 and the frame 12 for lifting the first device 72 from the frame 12. In the FIG 7 are

Screw heads of screws 200 can be seen. The first separating device of the electric machine 105 comprises, as disconnecting units, screw-nut connections comprising the screws 200 and angles 141 on the frame 12 (see FIG. 14).

For this purpose, the angle can include 141 threaded holes. The frame 12 includes the angles 141 as a part of

Separation unit of the first separation device.

FIG. 8 shows a detail of a sixth exemplary embodiment of an electrical machine 106. The electrical machine 106 has a decoupling unit 80 between the first radial frame part 122 and a second device 1124 of a shell 11 of the electric machine 106 for adjusting the rigidity of the bearing in a region of the first bearing device 16. The second device 1124 has concrete in this embodiment.

FIG. 9 shows a view of an upper side of the seventh exemplary embodiment of an electric machine 107, it being possible to see through a first device of an envelope. The electric machine 107 comprises a stator 760 having a first protection tube 449 and a second protection tube 469, the first protection tube 449 being fastened between the first radial frame part 122 and the first axial end 761 of the stator 760, and the second protection tube 469 is fixed between the second axial end 762 of the stator 760 and the second radial frame part 124. An opening 4491 of the first protective tube 449 is connected via an overflow channel 91 to an opening 4691 of the second protective tube 469. The electric machine 107 has, in addition to the overflow channel 91, a further overflow channel 90, which is likewise connected to openings of the first and second protective tube 449, 469. As a conveying device for a coolant flow through the first and second protective tube 469, 499 and the transfer channels 90, 91, a wave ventilator is fastened to a shaft of a rotor of the electric machine 107. The overflow channels 90,91 extend in a part of the interior of the electric machine 107, which advantageously results in low cost by an angular cross-sectional shape of a first device of a shell of the electric machine 107 and a circular cross-sectional shape of the stator 760, wherein the

Cross-sectional shapes seen in the axial direction 3 can be seen. Due to the proximity of the overflow channel 90 to the first axial frame part 121 and the overflow channel 91 to the second axial frame part 123, the overflow channels 90, 91 are advantageously accessible to the frame 12 by the separating device. Advantageously, in the electric machine 107, by removing or not installing the overlay 4.5 _r

Flow channels 90,91 through the openings 4491,4691 of the first and second protective tube 449,469 a visual inspection or access to parts within the first and second protective tube 449,469 are made possible.

10 shows a three-dimensional section of an eighth embodiment of an electric machine 108. The electric machine 108 has a fastening device 160 (shown in FIG. 16) for fastening the frame 12 to a flange for operation of the electric machine 108, wherein the axis of rotation 5 runs in a vertical direction. The fastening device 160 has screws 1600 as part of the fastening device 160 for this purpose. The electric machine 108 has a flange device 1020 which is fixed to the stator 750 and the frame 12. The flange device 1020 supports the stator 750 at a first axial end 751 of the stator 750 on a pressure plate 1080. The flanging device 1020 and the pressure plate 1080 have openings that may serve as passages to a first protective tube 44 for cooling stator winding heads. The axially permeable free space is located in a remaining interior, in which the stator 750 is located. The flange device 1020 surrounds a first portion of the interior in radial directions in which the

Protective tube is located with the Statorwicklungsköpfen at the first axial end 751 of the stator. The pressure plate 1080 and the flange device 1020 thus form a guide device which delimits the first portion of the interior from the rest of the interior space. The flange device 1020 may have an opening for cooling the first part of the interior. Thus, advantageously, the stator winding heads may be cooled at the first axial end 751 by a flow of coolant leaving the electric machine 108 through or through a shell other than the coolant flowing along a tangential surface of the stator 750. In the case of the electric machine 108, the casing has a first device 73 and a second device, which advantageously have the same construction as the first device 73 is. By removing the first and the second device 73, the interior can be advantageously made accessible. To the frame 12, a terminal box 101 for laying a wire 100 from the stator 750 is fixed to the terminal box 101 via the frame. The line 100 is at the

Statorwicklungsköpfen with the windings, which are fixed to the stator 750, electrically connected to supply via the windings electrical energy for operation of the electric machine 108 as a motor or in an operation as a generator for a connected to the electric machine 108 on the terminal box 101 electrical loads to remove electrical energy. The line 100 comprises a plurality of conductors, e.g. to transport the electrical energy by means of a three-phase system. The lead 100 is routed from the stator winding head at the second axial end 752 of the stator 750 to the second axial frame portion 121 of the electric machine 108 via an axial boundary of a protective tube attached to the second axial end 752 of the stator 750. From the second axial frame part 121, the line is guided into the terminal box 101. Advantageously, the line can also be laid on the side of the axial boundary facing the stator winding head at the second axial end 752, or laid directly from the stator winding head on a short path to the second axial frame part 121. The latter can take place in an electric machine without a protective tube at the second axial end 752 of the stator 750. Advantageously, a slight impairment by a plurality of lines in a service or the manufacture of an electrical machine according to the invention can be achieved if instead of the line 100 several lines with one or more conductors such as the previously described line 100 are laid.

11 shows a ninth embodiment of an electrical machine see machine 109, in which a second device is at a location 1502 of the electric machine 109 existing foundation 1100, 1101. The shell of the electric machine 109 thus has at the installation location 1502 next to the first Device 72, the second device. The foundation 1100, 1101 has two parts. The first part of the foundation 1100 extends along the second axial frame part 121 and at the place of installation 1502 into the ground underneath. The second part of the foundation 1101 extends along the first axial frame part 121 and further into the ground below the installation site 1502. Thus, the foundation 1100, 1101 can support the electric machine 109 and provide sufficient support during operation. The electric machine 109 has a fan 1103 for conveying a coolant flow through the first opening 1110 of the first device 72 of the shell and through a further first opening of the foundation 1101. The second axial frame part lies between the first opening and the further first opening , Thus, advantageously, a coolant flow into a first tangential coolant flow, which flows through the first opening into a first free space of the electric machine 109 and are divided into a second coolant flow, which can flow through the second opening into the first free space. The fan 1103 is fixed to the first axial frame part. Thus, the interior outside the radial plane and outside of the parallel planes can be made advantageously accessible by the separating device. It is not necessary to remove the fan from the electric machine 109 to remove the first device of the case and to lift the frame away from the second device of the case. A tangential surface of a stator of the electric machine 109 has a first part provided in a first part of an inner space and a second part provided in a second part of the inner space. The first tangential coolant flow is thus conveyed by the fan 1103 through the opening 1110 (see FIG. 7) into the first clearance with the first part of the tangential surface of the stator, where it can absorb waste heat from the stator and leaves the interior of the electric machine 109 via the second opening 1109. The second tangential coolant flow is from the fan 1103 through the further first opening in the foundation 1101 in a second space in the second part of the "_

Promotes interior space, there absorbs a waste heat of the second part of the tangential surface of the stator and leaves the electric machine 109 through another second opening, which is located in the foundation 1100. Thus, the stator of the electric machine 109 can advantageously be cooled by the first tangential coolant flow over the first part of the tangential surface via the second part of the tangential surface through the second tangential coolant flow.

FIG. 12 shows an exemplary embodiment of a series 1200 of electrical machines. The series 1200 comprises the electric machine 1 according to the first exemplary embodiment of FIG. 1, the electric machine 102 according to the second exemplary embodiment of FIG. 2, the electric machine 103 according to the third exemplary embodiment of FIG. 4 and FIG. 5, the electric machine 104 according to FIG 6, the electric machine 105 according to the fifth exemplary embodiment of FIG. 7, the electric machine 106 according to the sixth exemplary embodiment of FIG. 8, the electric machine 107 according to the seventh exemplary embodiment of FIG. 9, the electric machine 108 according to FIG Embodiment of FIG 10, the electric machine 109 according to the ninth embodiment of FIG 11 and an electric machine 110 according to a tenth embodiment of FIG 17.

A further exemplary embodiment of a series of electrical machines comprises a first electric machine which comprises a stator 7 whose flow device 20 has recesses 710 on the metal sheets which form channels 1531 for cooling the first electric machine which extend in the axial direction 3. Furthermore, the series comprises a second electric electric machine which comprises a stator 740 whose flow device 22 has recesses 201, wherein longitudinal extensions of the recesses 201 extend in a plane perpendicular to the axial direction 3. The recesses 201 are thereby moved in the axial direction 3. _{4 g}

layered sheets 711 formed. In making the series or servicing the series, the stators can be advantageously added, removed or replaced in both electrical machines because the interior is advantageously accessible through the separator outside the radial plane and outside the parallel planes. Advantageously cost-effective, the respective composite unit comprising the frame with the stator and the rotor can be connected to the shell of the first or second electrical machine with identical sheaths for the first and second electric machines. The same applies to the separation of the assembled unit from the shell.

FIG. 13 shows an exemplary embodiment of a sleeve 1311 for an electrical machine. The sheath 1311 has the first device 72. The device 72 has a separating edge 2111 which, together with a separating surface 212, 2112 of a frame 12, can form the first separating device of an electrical machine according to the invention. Furthermore, the first device 72 has bores 203 which, as an alternative to the separating edge 2111 or in combination with the separating edge 2111, can form part of a first separating device of an electrical machine according to the invention. The first device 72 has two opposite side walls, one of which has the first opening 1110, which is the separating edge

2111 interrupts. The opposite side wall has the second opening 1109 congruent to the first opening 1110. On the first device 72, the outer guide device 1113 is attached. The outer guide device 1113 adjoins the first opening 1110 and the opposite second opening 1109. The side walls of the first device 72 each have between a first axial end of the device 72 and the first opening 1110 and the second opening 1109 openings 1112 for cooling the first part of the interior, in particular of Statorwicklungsköpfen on. At the first axial end of the first device 72, the two side walls are connected by a transverse wall. At a second axial end of the first device 72 is located an opening 47. The first device 72 has at a first axial end of the outer guide device, the guide device 43 which is attached to the first device 72. The guide device 43 has openings 431 which form a passage between a first portion of an interior of the first device 72 between the first axial end of the first device 72 and the first axial end of the outer guide device 1113 and a remaining portion of the interior of the first device 72 form. The first portion of the interior is bounded by a portion of the sidewalls having the openings 1112. Since the first device has to absorb a small proportion of a weight of an electric machine according to the invention and also has to absorb a small proportion of the forces during operation of an electrical machine according to the invention, the first device 72 can be manufactured from sheet metal at a relatively low cost. Advantageously inexpensive surfaces of the interior of the first device 72 and / or the separating edge 2111 for high quality of an electric machine according to the invention can be provided with materials that advantageously dampen the airborne sound or decouple the first device 72 from a structure-borne noise. One cause of structure-borne noise may be the stator of an electrical machine according to the invention.

FIG. 14 shows an exemplary embodiment of a frame 12 for an electrical machine. The frame 12 comprises the first axial frame part 123, the first radial frame part 122, the second axial frame part 121 and the second radial frame part 124, which are connected to a frame, which predefines an extension of the inner space in the radial plane 13. (FIG 1 shows this also with reference to the drawn radial plane 13). The radial plane 13 divides a space into two parts, a first part of the room and a second part of the room. The first axial frame part 123, the first radial frame part 122, the second axial frame part 121 and the second radial frame part 124 form in the first part of the space spaced from the radial plane a separating surface 2112, wherein each frame part 121, 122, 123, 124 has a portion of the parting surface 2112. At the parting surface 2112 of the frame 12, an angle 141 is provided with a bore, with which the first device 72 of a shell 1311 of an electrical machine according to the invention can be releasably connected to a fastening element 200 with the frame. Furthermore, the first and the second axial frame part 123, 121 have bores 1811 and 1812, which are components of the second separation device 18, with which the frame 12 is fastened to a second device 112, 112, 112 or a foundation 1100, 1101 as a second device can. The first radial frame part 122 has a recess 1611 for a first bearing device 16 of an electrical machine according to the invention with an opening 1612, which can enclose an enveloping surface of the first bearing device 16 that is seen in a radial direction. Since a part of the first bearing device 16 received in the recess 1611 after insertion of the bearing device 16 has a circular cross section, this part of the first bearing device 16 has an enveloping surface in a radial direction, one length of which is the diameter from this part of the first bearing device 16 corresponds. Accordingly, the opening 1612 has a length in the first radial direction 14 which corresponds at least to the length of the diameter of this part of the first bearing device 16. The same applies to a recess 1711 for a second bearing device 17 of an electric machine according to the invention having an opening 1712. Furthermore, a separating device of an electric machine according to the invention may have a third separating device 204 with detachable contact points for removing an outer part guiding device 1201 from the frame 12. For this purpose, the frame 12 has the third separating device 204 with detachable contact points for removing an outer part-guiding device 1201 from the frame 12. For this purpose, the frame can have surfaces with bores as parts of separating units of the third separating device 204 with detachable contact points on the first axial frame part 123 and the second axial frame part 121 in the second part of the space. sen. In the exemplary embodiment of the frame 12 according to FIG. 14, the outer partial guide device 1201 is fastened to the frame 12 by the third separating device 204 with detachable contact points on the frame. For this purpose, the third separating device 204 comprises separating units which comprise screws 202 and the bores on the first axial frame part 123 and the second axial frame part 121 in the second part of the space. The screws 202 and the bores that include threads have the releasable contact points. In a further exemplary embodiment of a frame, separation units with snap connections are present instead of the separation units with screws and nuts. An outer partial guide device of the further embodiment has for this purpose projections which snap into the holes. In this case, the bores can also be recesses with a rectangular shape.

FIG. 15 shows the first exemplary embodiment of the electric machine 1 at an installation site 1520. The installation site 1520 is a hall in which a crane 1510 is usually installed, which can approach virtually any location in the hall. In order to use the space of the hall inexpensively, the electric machines 1 and driven by them engines 150 are placed in close proximity to each other. In one embodiment of a method for a service on an electrical machine according to the invention, for example the electric machines 1, the first device of the casing of the electric machine 1 can be removed therefrom. For making available the second part of the interior of the electric machine, the frame 12 with the stator and the rotor can be lifted off a second device of the casing. For this purpose, advantageously, the crane 1510 can be used to remove the first device of the shell of the electric machine 1 from the electric machine 1 and it can be carried out inexpensively in high quality due to the advantageous accessibility of the interior of the electric machine 1, a service. For making available the second part of the interior of the electric machine can be raised with the crane 1510 of the frame 12 with the stator and the rotor.

16 shows a view of the eighth embodiment of the electric machine 108 in the axial direction. It has already been described in connection with FIG.

17 shows a view of the top of a tenth embodiment of an electric machine 110, being peered through a first device of a shell. The tenth embodiment of the electric machine 110 has a structure largely corresponding to the structure of the third embodiment of the electric machine 103 shown in FIG. 4 and FIG.

The tenth embodiment has, instead of the heat dissipation device 51, a forced cooling fan 217 in a forced cooling fan housing 218 disposed on one side of the electric machine 110 with the first radial frame part. The first device of the shell and the second device of the shell are identical to the third embodiment of the electric machine 103 executed. A casing of the electric machine 110 has on the side of the electric machine with the first radial frame part 124 a first axially directed opening for cooling the electric machine 110, wherein the opening is connected to an axially flow-through free space of the electric machine 110. The first axially directed opening is made possible in the first device 72 (see FIG. 5) advantageously through the opening 47 next to the frame 12 in a cost-effective manner for a high-quality electrical machine. In the second device 1121 (see FIG. 5) of the casing, in addition to the frame 12 on the side of the electric machine 110 with the second radial frame part 124, a second axially directed opening for cooling the electrical machine 110 is advantageously cost-effective for an electric machine with a high one Quality available. Thus, the forced cooling fan 217 can cost almost over the entire cross section of the electric machine 110 advantageously. favorably promote a gaseous coolant, for example air, in the flow direction 191 in the electric machine 110. A rotor 517 of the electric machine 110 may advantageously have a shaft which does not protrude beyond the frame 12 on the side of the second radial frame part or only slightly beyond the second radial frame part. In the electric machine 110, the stator has the first and the second protective tube 449, 469, wherein the opening 4491 of the first protective tube 449 is connected via the overflow channel 91 to the opening 4691 of the second protective tube 469.

FIG. 18 shows a section through an eleventh exemplary embodiment of an electric machine 111. The electric machine 111 comprises a stator 770, which has a flow device 24 for cooling the electric machine 111. The electric machine 111 has a guide device 422, which is arranged between an axially permeable free space 411 and a first free space 501 in an inner space of the electric machine 111. The

Stator winding heads 703, 704 are at the first axial end

781 and the second axial end 782 of the stator 770 and are part of a plurality of windings, which are fastened to the stator 770. The windings extend in the axial direction 3 from a first axial end 771 of the winding 705 to the first axial end 781 of the stator 770, then through grooves on a rotor 7 at the air gap 6 facing surface of the stator 770 to the second axial end

The stator winding heads 703, 704 are located between the first axial end 771 of the winding 705 and the first axial end 781 of the stator 770 and between the second axial end 782, respectively The stator 422 extends in the axial direction 3 at least from a first axial end 771 of a winding 705 of the stator 770 to a second axial end 772 of the winding 705 of the stator 770. The guide device 422 is detachable on the stator 770 of the electric machine 111 Fasteners are attached to mounting units 423 at the first and second axial ends 781, 782 of the stator 770. For this purpose, the stator 770 on the fastening units 423 have holes with threads that allow a detachable connection with screws. The guide device 422 has a passage for the coolant in the axial direction 3 along a tangential surface 432, 433, 434 of the stator 770. Thus, advantageously, a more uniform temperature distribution of the coolant from the first axial end 771 of the winding 705 of the stator 770 to the second axial end 772 of the winding 705 of the stator 770 in the axially permeable space 411 and in the first free space 501 can be achieved and advantageously from the axial permeable space 411 a colder coolant uniformly along the stator 770, ie from the first axial end 771 of the winding 705 of the stator 770 to the second axial end 772 of the winding 705 of the stator 770, in the axial direction 3 in the first space 501 to the tangential Surface 432, 433, 434 of the stator 770 are performed. The stator 770 of the electric machine 111 has a first protection tube 448 and a second protection tube 468, with the first protection tube 448 secured between the first radial frame part 122 and the first axial end 781 of the stator 770, and the second protection tube 468 between the second axial end 782 of the stator 770 and the second radial frame part 124 is attached. The guide device 422 is attached to the first and second protection tubes 448, 488 with releasable fasteners to attachment units 447 at the first and second axial ends 781, 782 of the stator 770. A view of an upper side of the eleventh exemplary embodiment is obtainable from FIG. 4, in which the guide device 422 is drawn over the first protective tube 44 and the second protective tube 46, and the guide device 422 continues over the first protective tube 44 and the second protective tube 46 Through device 421 to the first and the second axial end 771, 772 of the winding 705 (see FIG 18). In the area of the first and second protection tube

448,468 (see FIG. 18), flow currents are also obtained. directions of the coolant, which correspond in principle to the drawn in Figure 4 flow directions 191.193. While the guide device 43 has openings 431 in FIG. 4, the attachment units 423 at the first and second axial ends 781, 782 of the stator 770 of the eleventh embodiment have a small extent in the tangential direction. In an electrical machine according to the invention having a first and a second protective tube, a higher cooling capacity at the first and second protective tube can advantageously lead cost-effectively to a high quality of an electrical machine according to the invention. In an electric machine according to the invention without a first and second protective tube, a guide device, for example guide 43 with openings 431 according to FIG. 4, can advantageously lead to a high quality of an electrical machine according to the invention, since a lower cooling power at the stator winding heads compared to a cooling capacity the tangential surface of the stator between the Statorwicklungsköpfen can give better efficiency of the electrical machine according to the invention without a first and second protective tube. Thus, in a further embodiment of a series of electric machines in the embodiment of the 1200 series of electric machines, the third embodiment of the electric machine 103 according to FIG 4 and FIG advantageous 5 by an electric machine according to FIG 4 and FIG. 5 without the first and second Protective tube 44, 46 are advantageously replaced and the further embodiment of a series of electrical machines to the eleventh embodiment of the electric machine 111 are advantageously extended. The electric machine 111 of FIG. 18 includes a shell having a first device 730 and the second device 1123. Attached to the first device 730 is an outer guide 1114 extending axially from a first axial end of the first device 730 to a second axial end of the device 730. At least the outer guide device 1114 extends from the first axial end 771 of the coil 5 to the second axial end 772 of the coil 5. Thus, FIG a guidance of a coolant flow advantageously takes place inexpensively and the interior is advantageously made accessible outside the radial plane 13 and outside the parallel planes 131 by the separating device, since the outer guiding device 1114 is already removed by removing the first device 730 of the envelope from the frame 12 becomes. On the frame 12, the outer part guide device 1202 is fastened to the frame 12 on the third separating device 204 with detachable contact points for removing an outer partial guide device 1202. The outer sub-guide device 1202 extends from the first radial frame part 122 in the axial direction 3 to the second radial frame part 124. At least the outer sub-guide device 1202 extends from the first axial end 771 of the winding 5 to the second axial end 772 of the winding 5. The outer sub-guide device 1202 can thus advantageously in an electric machine according to the invention in an electrical machine according to the invention and / or a certain location advantageous shape for guiding a flow of coolant in the interior are formed.

Although the invention has been described in detail by the preferred embodiments, it is not limited to the disclosed examples. Other variations can be deduced therefrom by those skilled in the art without departing from the scope of the invention.

Claims

claims

1. Electric machine (1,102,103,104,105,106,107,108,109,

110,111)

- A rotor (4,403,405,406) which is rotatably mounted about an axis of rotation (5), wherein the axis of rotation (5) in an axial direction (3),

a stator (7,740,750,760,770) extending along the

Pivot axis (5) extends from a first axial end (701, 741, 751, 761, 781) to a second axial end (702, 752, 722, 782) of the stator (7, 740, 750, 760, 770), and in an operation of the electric machine (1, 102-111) via an air gap (6) with the rotor (4,403,405,406) cooperates,

- An interior (10), wherein the stator (7,740,750,760, 770) and the rotor (4,403,405,406) are in the interior space (10),

a shell (11, 1311) having a first device (72, 73, 730, 1111) at least partially surrounding the interior space (10),

- A frame (12) having an extension of the interior (10) in a radial plane (13) with a first axial frame part (123), a first radial frame part (122), a second axial frame part (121) and a second radial Frame part (124) pretensions, wherein the radial plane (13) through the axial direction (3) and a perpendicular to the axial direction (3) extending first radial direction (14) is clamped, and

a separating device (2) on the frame (12),

- wherein the stator (7,740,750,760,770) has a fixing device (15,1500) with which the stator (7,740,750,760,770) is fixed to the frame (12),

- wherein the rotor (4,403,405,406) at its first axial end (451,461) in a first bearing device (16) on the frame (12) is rotatably mounted about the axis of rotation (5), - wherein the rotor (4,403,405,406) at its second axial end ( 452, 462) is rotatably mounted on the frame (12) about the axis of rotation (5) in a second bearing device (17), - wherein the interior space (10) outside of the radial plane (13) and outside of parallel planes (131) through the separating device (2) is accessible, wherein the parallel planes (131) intersect the frame (12) and parallel to the radial Level (13) run.

2. Electrical machine (1,102-111) according to claim 1, wherein the separating device (2) comprises a first separating device

(141,200,211,212,2111,2112) between the first device (72,73,730,111) of the sheath (11,1311) and the frame (12) with releasable contact points for removing the first device (72,73,730,111) of the sheath (11,1311) from Frame (12).

3. Electrical machine (1,102-111) according to claim 1 or 2, wherein the first device (72,73,730,111) of the shell

(11,1311) surrounds the interior (10) at least from the first axial end (701,741,751,761,781) of the stator (7,740,750,760,770) to the second axial end (702,752,762,782) of the stator (7,740,750,760,770).

4. Electrical machine (108) according to one of the preceding claims, wherein the electric machine (108) has a fastening device (160) for fastening the frame (12) to a flange for operation of the electric machine (108), wherein the axis of rotation ( 5) in a vertical direction.

5. Electrical machine (1,102,103,104,105,106,107,109,110, 111) according to one of claims 1 to 3, wherein the first device (72,730,111) the interior space (10) on a first

Side of the frame (12) at least from the first radial frame part (122) to the second radial frame part (124) surrounds.

6. Electrical machine (1,102,103,104,105,106,107,109,110, 111) according to one of claims 1 to 3, wherein the separating device (2) has a second separating device (18) with releasable contact points to a lifting of the frame (12) from a second device (112,1100,110 , 1123, 1124).

7. The electrical machine (109) of claim 6, wherein the second device (1100, 1101) is at a location

(1502) the electric machine (109) existing foundation (1100, 1101).

8. The electrical machine (1,103,104,105,106,107,108,110,111) according to claim 6, wherein the sheath (11,1311), the second device (112,1100,1101,1123,1124).

An electric machine (106, 109) according to any one of claims 6 to 8, wherein the second device (1100, 110, 11, 124) comprises concrete.

An electric machine (1,102-111) according to any one of the preceding claims, wherein the separator (2) comprises a third separator (204) having releasable contact points for removing an outer sub-guide (1201,1202) from the frame (12).

11. Electrical machine (1,102-111) according to one of the preceding claims, wherein to the frame (12) has a terminal box (101) for laying a line (100) from the stator (750) via the frame (12) to the terminal box (101). is attached.

12. Electrical machine (105,106) according to any one of the preceding claims, wherein the electrical machine (105,106) between the shell (11,1311) and the frame has a decoupling unit (70,80).

13. Electrical machine (1,102-111) according to any one of the preceding claims, wherein the first bearing device (16) on the frame (12) from the first radial frame part (122) in a second radial direction (23) perpendicular to the radial plane (13) is removable and the second bearing device (17) on the frame (12) from the second radial frame part (124) in the second radial direction (23) perpendicular to the radial plane (13) can be removed.

14. An electric machine (1,102-111) according to any one of the preceding claims, wherein the fixing device (15,1500) comprises an adjusting device (152) for adjusting the air gap (6) by changing a position of the fixed to the frame (12) stator (7,740,750,760,770 ) relative to the frame (12).

15. Electrical machine (1,102-111) according to one of the preceding claims, wherein the fixing device (15,1500) in the axial direction (3) extending stiffening element (153) to stiffen the stator (7,740,750,760,770) summarizes.

16. Electrical machine (102) according to claim 15,

wherein the stiffening element (1503) is a fixing unit

(1504) of the fixing device (1500).

17. Electrical machine (1,102-111) according to claim 15, wherein the stiffening element (153) within one in the axial

Direction (3) seen envelope surface of the stator (7,740,750,760, 770) extends.

18. Electrical machine (102,103,104,105,106,107,108,109, 110,111) according to any one of claims 15 to 17, wherein the stiffening element (1503) can guide a coolant in a direction perpendicular to the axial direction (3) extending radial direction from the stator (740,750,760,770).

19. Electrical machine (1,102-111) according to any one of the preceding claims, wherein an outer guide device

(1113) is attached to the first device (72,73,730,111).

An electric machine (1,102-111) according to any one of the preceding claims, wherein the stator (7,740,750,760,770) is accessible from outside the radial plane (131) and outside parallel planes (131) through the separator (2) feasible flow device (20,21,22,24) for cooling the electric machine (1,102-111).

An electric machine (1,102-111) according to claim 20, wherein the flow device (21,22,24) has recesses (201), wherein longitudinal extensions of the recesses (201) extend in a plane perpendicular to the axial direction (3).

22. Electrical machine (102,103,104,105,106,107,108,109, 110,111) according to any one of the preceding claims, wherein the

Casing (11, 1311) has on a side of the electric machine (102-111) with the first axial frame part (123) a first opening (1110) for cooling the electric machine (102-111), the first opening (1110) with one at a tangential surface (432,433,434) of the stator

(740,750,760,770) adjacent first free space (50, 501).

23. Electrical machine (102-111) according to claim 22, wherein the sheath (11, 1311) on the side of the electric machine with the first axial frame part (123) has a further first opening (1120) for cooling the electric machine (102). 111), wherein the first axial frame part (123) between the first opening (1110) and the further first opening (1120) is present.

24. Electrical machine (1,102-111) according to any one of the preceding claims, wherein the sheath (11,1311) on one side of the electric machine (1,102-111) with the second radial frame part (124) has a first axially directed opening ( 47) for cooling the electric machine (1,102-111), wherein the first axially directed opening (47,470) is connected to an axially flow-through free space (10,41,411).

25. Electric machine (102,103,104,105,106,107,108,110,

111) according to claim 24 and one of claims 22 to 24, wherein a guide device (42, 422) between the axially permeable free space (41, 411) and the first free space (50, 501) is arranged in the interior of the electrical machine.

26. Electrical machine (103,104,105,106,107,108,109,110) according to any one of claims 18 to 25, wherein in the interior (10) at the first axial end (741,751,761) of the stator

(740,750,760) a guide device (43,1080) is arranged.

27. The electric machine according to claim 25, wherein the guide device in the axial direction extends at least from a first axial end of a winding of the stator up to a second axial end (772) of the winding (705) of the stator (770) extends.

An electric machine (1,102-111) according to any one of the preceding claims, wherein the stator (740,760,770) comprises a first protection tube (44,448,449) and a second protection tube

(46,468,469), wherein the first protective tube

(44,448,449) between the first radial frame part (122) and the first axial end (741,761,781) of the stator

(740,760,770), and the second protective tube

(46,468,469) is secured between the second axial end (762,782) of the stator (740,760,770) and the second radial frame member (124).

29. Electrical machine (107) according to claim 28, wherein an opening (4491) of the first protective tube (449) via an overflow channel (90,91) having an opening (4691) of the second

Protective tube (469) is connected.

The electrical machine (104) of any one of the preceding claims, wherein the rotor (460) includes a shaft (406) for rotatably supporting the rotor (460) in the first and second bearing devices (16, 17), the shaft (406 ) in the axial direction (3) has a bore (4061) for transporting waste heat of the electric machine (104) to a heat dissipation device (60), the heat dissipation device (60) being located at the first or second axial end (461, 462). of the rotor (460) in the axial direction (3) within the frame (12).

31. The electric machine according to claim 1, wherein the rotor has a shaft for rotatably mounting the rotor in the first and second bearing device, wherein the shaft is in the form of a shaft ) in the axial direction (3) has a bore (4051) for transporting a waste heat of the electric machine (103) to a heat-emitting device (51) in the axial direction (3) outside the frame (12).

32. The series (1200) of electrical machines (1,102-111) comprising at least a first electrical machine (1,102-111) according to a first claim of the preceding claims and a second electric machine (1,102-111), in particular according to a second claim of the preceding Claims.

33. frame (12) for an electrical machine (1,102-111) according to one of claims 1 to 32, wherein the frame (12) the first axial frame part (123), the first radial frame part (122), the second axial frame part ( 121) and the second radial frame part (124).

A casing (11, 1311) for an electric machine (1, 102-111) according to any one of claims 1 to 32, wherein the casing (11, 1311) comprises the first device (72, 73, 11, 730).

35. A method for servicing an electrical machine (1,102-111) according to any one of claims 1 to 32, wherein the interior space (10) outside the radial plane (13) and outside the parallel planes (131) through the separation device ( 2) is made accessible.

36. Method for producing an electrical machine

(1,102-111) according to one of claims 1 to 32, wherein the inner space (10) outside the radial plane (13) and the parallel Lelen levels (131) by the separating device (2) is made accessible feasible.