Converter-motor and drive system series

The invention relates to a converter motor and a series of drives.

From DE 197 04 226 A1 describes a converter motor is known, in which an inverter via a Intermediate part is connected to the motor and thus forms a structural unit. It dominates the heat sink of the inverter, the <b>cuboid, motor side according to the Motor housing molded</b> Part between B-side, ie in the direction away from the rotor direction. The intermediate part has recesses suitable for the passage of electrical cables are. These recesses are not A-side or B-side but in the transverse Walls provided. The disadvantage here is that a mounting mechanical in those is difficult or impossible investments infrequently in the transverse direction, so do not A-side and B-side You have no or too little space for cables.

The invention is therefore based on the object, a converter motor high flexibility in cost-effective manner to further develop.

According to the invention, the object is in the converter motor according to claim 1 specified characteristics and in the series after the specified in claim 10 Features dissolved.

Essential features of the invention, in the converter motor are that the converter motor a motor, at least one intermediate portion and an inverter, wherein the inverter, Signal, power electronics and at least one heat sink, and wherein the Drive is mechanically connected at least over the intermediate part with the engine, and wherein the intermediate part is oriented at least in a first direction for passing recesses comprises electrical lines, and wherein the converter motor is designed such that the Intermediate part is mounted in at least two orientations.

This has the advantage that for different applications and installation conditions, the Cable management in the most appropriate direction is inexpensive can be laid and executed. At the same time the solution is very cost effective because one hand at least motor, inverter and intermediate part are reusable, and the other part of the converter motor is flexibly adaptable. also is particularly advantageous in that recesses at even only one side of the intermediate part for different directions of the cable guide are sufficient. In the manufacture of recesses must therefore only edit for making the recesses. This is executable vorteiligerweise in a single setup. Thus, the production is particularly simple and inexpensive. By multiple uses are the storage costs, Production costs and other costs significantly reduced.

In one advantageous embodiment, the first direction is a transverse direction, in particular transversely to the rotor axis, or a longitudinal direction, in particular in the rotor axis direction. It is advantageous while that of the converter motor is used in applications that only B-side enough space allow for cables, or in other applications that only in a transverse direction sufficient space allow for cables.

In one advantageous embodiment, the go prepared orientations in which the Intermediate part is mounted, by means of a discrete or continuous rotation into each other and / or are converted into each other. is of advantage that during assembly a simple Rotation, in particular for manual manufacturing a very simple hand grip, is required, the is economically feasible.

In one advantageous embodiment, the intermediate part is the motor side at least on its and converter side interface of square design. This has the advantage that errors are reduced with respect to misalignment during assembly, as attached only when correctly Intermediate part, the connection can be established.

In one advantageous embodiment, the intermediate part is the motor side and converter side circular educated. An advantage is that any direction of the recesses and thus for the cable feed are possible. Thus, the flexibility is particularly increased.

In one advantageous embodiment, the mechanical interface to the inverter Intermediate part and the intermediate part rectangular and to the motor via a at least one bottom plate to the terminal box approach of the motor connected. Advantageous is that even a converter, which has a rectangular mechanical interface has to a motor with square mechanical interface can be connected.

In one advantageous embodiment, the at least one surmounted heatsink comprehensive Body of the inverter, the intermediate portion of at least the A-side. here is advantageous that at Although many applications A-side space for superior inverter is present, but B-side not. Inverter motors, which drive the corresponding B-side, in particular with Heatsinks, considerably surpass, that would not be used.

In one advantageous embodiment of the motor has a terminal box approach to mechanical connection with the intermediate part, in particular a terminal box approach which is shaped corresponding to the intermediate part. here is an advantage that thus a mechanical interface is provided which is suitable even for a series.

In one advantageous embodiment, the inverter includes a first connector portion to Connection with a further connector part, in particular in the area of ​​the engine, Terminal box approach or intermediate portion, on which the electrically connected to the stator windings is connected motor. An advantage is that the motor and converter quickly and easily are mechanically and electrically separated and connected.

In one advantageous embodiment, the other connector part is on an adapter plate mounted, for executing at least the intermediate part housing function and / or the inside the intermediate part is arranged. This is advantageous in that the adapter plate quickly and easily is replaced easily or can be selected during installation. Thus, inverter motors with various options easy to implement. For example, the adapter plate is providable with an electronic circuit or the function brake rectifier, motor switch Soft start realized.

In an advantageous embodiment, the recesses of the intermediate part are formed in such a way that at least one connector part in such a recess of the intermediate part mountable and thus the electrical lines to the other devices via this Connector part on the intermediate part can be brought together and separated. This is advantageous, that an electrical disconnection of the supply lines and the optional signal lines is easy, fast and cost-effective manner.

In one advantageous embodiment, the Wärmeableiten of the signal or done Power electronics generated heat to the environment via one or more components, in particular relating to materials with a low specific thermal resistance, wherein at least one component is an electrical insulator. In particular, from the Power electronics for signal electronics, a higher heat resistance than the Power electronics to the ambient present and / or that the power electronics of the Signal Electronics, a higher heat resistance than the signal electronics Area is available. An advantage is that two functions, thus isolating and heat conducting, with are a material executable and thus the converter motor extremely cost executable is.

In one advantageous embodiment, the heat conduction takes place via one or more Components, wherein at least one component is a gas such as air or the like, and / or that the heat conduction via this gas can be improved by operating a fan. is of advantage that a gas, which is an insulator, and even a low specific Thermal conductivity has, usable for heat conduction and isolation by essentially means the flow of heat is transported.

In an advantageous embodiment, at least one cooling body cooling fins and / or Cold fingers. is of advantage that depending on the application, both powerful cooling fins as are also substantially in all directions uniformly operating cooling finger usable.

In an advantageous embodiment of the converter motor is designed such that from the stator the engine a lower thermal resistance to the environment is available as from the stator Motor for power and signal electronics. here is an advantage that the performance and is not charged signal electronics of the thermal output of the engine.

In one advantageous embodiment, the terminal box approach and / or in the intermediate part of a Thermal barrier mountable, the radiant heat conduction and / or convection heat conduction reduced. An advantage is that the intermediate part is made compact and thus the Inverter can be used in a relatively short distance from the engine. Thus, the entire Converter motor made compact coming despite the high from the stator and the inverter Heat output.

In one advantageous embodiment, the adapter plate is designed as a thermal barrier. From Advantage is that no special additional component to be used as a thermal barrier, but the choice of materials and / or design of the adapter plate, the function of the thermal barrier fulfilled.

In one advantageous embodiment is viewed from the adapter plate of the motor side and / or the converter is provided at least one thermal barrier, in particular within the Intermediate part and / or terminal box approach. here is an advantage that further Thermal barrier surprisingly a more compact version of the converter motor make it executable, since it has been found that for the converter with powerful is thermal barrier a lesser distance from the motor is required.

In one advantageous embodiment indicates the interface from the intermediate part to the inverter another discrete rotational symmetry than the at least one bottom plate full Interface from the intermediate portion toward the motor. This has the advantage that inverters with motors Not only are connected, although they have different housing and housing symmetries but also the lines on different sides of the intermediate part by means of twisted Assembly are guided out.

In one advantageous embodiment, the intermediate part with the converter is a Adapter plate connectable and / or the intermediate part is connected to the engine via an adapter plate as acting base plate connectable. The advantage here is that these plates are such formable, that they with connectors and / or electrical and / or electronic components be equipped. Moreover, by either the bottom plate or the adapter plate two Interfaces executable in one of these sheets executable, which then different rotationally symmetrical housing of the inverter and motor or intermediate part connectable.

In one advantageous embodiment, the adapter plate comprises electronic assemblies and / or a plug connector for electrical connection with the converter and / or the base plate is different for receiving electrical and / or electronic run options or within one size of a series of inverter motors selectable. This has the advantage that the drive quickly, simply and easily releasably connectable is and within a size within the range of inverter motors by exchanging the adapter plates different configurations and / or options are achievable. Thus, a large number of variations by a small number of parts reached.

In one advantageous embodiment, the base plate to the intermediate part toward an interface , which has a different rotational symmetry than the likewise encompassed by the bottom plate Interface to the motor. here is an advantage that by means of a thin executable Base plate, a mechanical interface conversion is reached and in this way miscellaneous verdrehsymmetrische intermediate parts and engines are such releasably connectable that when assembling various types of converter motor can be reached at twisting.

Essential features of the invention in the series are that at least one series includes frame size, each having two or more, distinct variants of includes drives, each drive one at least one terminal box approach includes having the motor, and wherein a <b>first variant</b> as a motor with the Terminal box approach mounted motor terminal box is executed, and where one or more, more variants from the first variant each in one by an angle rotated mounting of the motor terminal box differ, and wherein a second variant is designed as a motor mountable on the terminal box approach intermediate part, with the a converter to form a converter motor is connectable, and wherein one or several other variants of the second variant, respectively in a by an angle rotated mounting at least the intermediate portion differ.

here is an advantage that the same motor with different devices such as intermediate part, Motor terminal box or other attachments to a drive for a variety of Applications be manufactured under extremely low cost. In particular, the storage and Production costs reduced by multiple use. is further increasing flexibility by variously possible orientations of the devices as intermediate part, Motor terminal box or more essays, achieved. This is due to the defined interface the motor and these devices, wherein the devices and the motor at their Interfaces have the same rotational symmetry. An important advantage is also that the System mounted motor with the motor terminal box by easily and cost-effective manner Replacing the motor terminal box is convertible into a converter motor. Thus, a Plant retrofit or the functional potency of the drive can be optimized.

In an advantageous embodiment, a <b>third variant</b> as a motor with the Terminal box approach mountable attachment executed, the only one electrical and / or includes electronic circuitry for performing at least one function. This is advantageous, for example, an engine switch, a rectifier for a DC brake, a Temperature monitoring or the like, is providable in the essay. So is the engine with a such a function be equipped with the engine to the terminal box approach from the series is selected and the articles can be selected according to the desired function. is therefore created a modular system in the field of electrical and electronic functions and a reduction of the parts costs and attainable.

In one advantageous embodiment, one or more, further variants of different the third variant in each case in a position rotated by an angle mounting of the attachment differ. An advantage is again that without depending on the requirements of the system More effort carried the penetrations in the required and appropriate orientation can.

In one advantageous embodiment, the function is an engine switch function, a Soft starting, a brake rectifier and / or at different supply voltages operable electronic circuit. An advantage is that the series a wide variety provides functions that can be adapted to the respective application. Furthermore, For example, an inventive system in the converter motor in a motor Motor terminal box or in a motor with attachment for performing the functions listed changeable. In particular, a converter motor is against an engine with less expensive Top with soft start replaceable if was, for example, recognized that the functional Potency or entire functional range of the inverter in the application is not necessary but only the soft start of the drive.

Further advantageous embodiments result from the dependent claims.

LIST OF REFERENCE NUMBERS

<dl tsize="5" compact="compact"><dt>1</dt><dd>motor</dd><dt>2</dt><dd>inverter</dd><dt>3</dt><dd>intermediate part</dd><dt>4, 31</dt><dd>heatsink</dd><dt>5</dt><dd>plug</dd><dt>6</dt><dd>socket</dd><dt>7</dt><dd>clipboard</dd><dt>8th</dt><dd>Electric lines</dd><dt>9</dt><dd>assemblies</dd><dt>10</dt><dd>adapter plate</dd><dt>11,41</dt><dd>recesses</dd><dt>12</dt><dd>Terminal box approach</dd><dt>13</dt><dd>rotor</dd></dl><dl tsize="2" compact="compact"><dt>42</dt><dd>Motor terminal box</dd></dl><dl tsize="14" compact="compact"><dt>51</dt><dd>gear</dd><dt>52</dt><dd>motor</dd><dt>53</dt><dd>heatsink</dd><dt>54</dt><dd>Cable gland</dd><dt>55</dt><dd>Bottom plate, square</dd><dt>56, 81, 82, 83</dt><dd>intermediate part</dd><dt>57</dt><dd>cover</dd></dl><dl tsize="2" compact="compact"><dt>61</dt><dd>Adapter plate, rectangular</dd><dt>62</dt><dd>poetry</dd></dl><dl tsize="2" compact="compact"><dt>71</dt><dd>Terminal panel connector</dd><dt>72</dt><dd>Electronic options</dd><dt>73</dt><dd>Terminal box approach, square</dd><dt>74</dt><dd>square recess</dd></dl><dl tsize="2" compact="compact"><dt>84</dt><dd>Connectors</dd><dt>85</dt><dd>threaded bore</dd><dt>86</dt><dd>heavier connectors (M12)</dd><dt>87</dt><dd>Rectangular connectors</dd></dl>

The invention will now be explained in more detail with reference to figures:

In the Figure 1 is a schematic exploded view of an inventive Embodiment of the converter motor shown. It comprises a motor 1, which in its Inside comprises a stator and for deriving the mechanical torque to a powered mechanical device, such as a gear, an A-side rotor 13. A-side and a flange is provided for the mechanical connection with a mechanical device. B-side comprises the engine 1 in another inventive Embodiments, a brake and / or a fan.

The housing of the engine 1 has a, in Figure 1 is only indicated square Terminal box approach 12. This terminal box approach provides an opening of Motor housing for connection of the electric wires 8. The electrical lines 8 comprise the electrical lines to the stator windings and in further invention embodiments further lines as lines to a Temperature sensor and / or a brake. At least the electrical lines of the Stator windings are on a in the area of ​​the motor housing and / or in the region of the Terminal box attachment 12 mounted clipboard 7 out.

the corresponding square-shaped intermediate part on the terminal box approach 12 3 mounted, which is oriented in a first direction to the recesses 11 on a side wall including passage of electrical cables. These include electrical cables Supply lines, in particular power cables and signal cables.

In further embodiments of the invention 3, the intermediate part of not only the Recesses 11 on a single side wall, but also on other side walls. These further recesses are so oriented in different directions. However, increases the Production of further recesses the costs.

On the engine side 1abgewandten the intermediate part 3, a converter 2 is connected, the housing also the intermediate part 3 according to the connection point, so the mechanical interface between the inverter 2 and intermediate part 3 is square shaped.

The intermediate part 3 surrounds an adapter plate 10 with the electronic assemblies. The Intermediate part 3 sits on the edge of the adapter plate and thus leads at least partially a Housing function of the adapter plate 10th wearing The adapter plate 10 electrical and / or electronic modules and a connector 6 as the second connector member for electrical and mechanical connection to a plug designed as a plug connector part of the first 5 Inverter 2. The adapter plate 10 also has electrical lines to the clipboard 7 and electrical lines that run through the recesses 11 to other devices. Respective elements, the adapter plate 10 to also.

In further embodiments, the invention is in the recesses 11 a Connector part einmontierbar whose insertable from the outside and accordingly exported (counter-) connector part with the lines to the other devices connected is. Thus, a very quick separation and closing of the converter motor executable.

The square version of the mechanical interface from the intermediate portion to the engine Terminal box approach and also square version of the mechanical interface allowing the intermediate part to the inverter, that the intermediate part in a 90 °, 180 ° or is 270 ° rotated orientation mountable.

2 shows an inventive embodiment is shown rotated by 90 ° having orientation of the intermediate part.

In Figure 1 and Figure 2, the inverter dominated A-side, the intermediate part 3 and the Terminal box approach 12. In particular, a heat sink 4 of the inverter 2 is in this area available. An important advantage is that the converter motor used in applications is where, although the A-side, is freely especially above the rotor space, but the B side no capacity is or has very little space available. Since the space requirement of the inverter, in particular over due to the necessary removal of the heat of the power electronics of the converter Heatsink 4, is significant, the embodiment according to the invention enables many new Purpose.

In particular, through the various mountable orientations of the intermediate part 3 is the Converter motor depending on the application adaptable. For example, B-side is not a place for the superior part of the drive, but it's still enough space for a lead-out of electrical wires, especially thick power cables. In this case, the usable converter motor according to FIG. 2 If only in the transverse direction for this lead-out of these electrical lines is present, the converter motor is used according to FIG. 1 Under cross-direction is perpendicular to the rotor axis or perpendicular to a mathematical to understand a line linking the A-side to B-side.

In further embodiments, the invention is described instead of square Execution of the mechanical interfaces of the intermediate part 3 to the inverter 2 and the motor 1 a round version implemented. In embodiments of the invention is generally An embodiment can be used, in which the interfaces each have the same discrete or continuous have rotational symmetry at the same rotational axis. So there are also uniform or three- polygonal versions executable. The axis of rotation is preferably a mathematical fictitious axis of certain elements or components of the inverter by certain Elements or components of the motor leads.

In further embodiments of the invention, the adapter plate 10 and the Terminal board 7 designed as a structural unit.

In further embodiments of the invention, the bushing 6 and the connector 5 is as first and second connector member configured such that the inverter also such is inserted that he B side instead of the A-side, as shown in the figures, surmounted. For further Embodiments of the invention is first and second connector member such stated that the inverter in other orientations can be inserted. First and second connector part in this case have at their mechanical and / or electrical Interfaces at the corresponding discrete or continuous rotational symmetries. In particular, reverse polarity is possible. In this way, according to the invention use inverter motors in a variety of new applications.

In the figure 3 the inverter has an additional heat sink 31 that faces away from the engine 1 oriented. In further embodiments of the invention, other than the shown orientations executable and / or other heat sink. In particular heatsink instead of cooling fins wholly or at least partly equipped with cooling fingers. In this way is a convective cooling improved and the convective cooling is in all spatial Mounting orientations total approximately equal.

In further embodiments of the invention, the adapter plate 10 is a thermal barrier performed, the penetration of the stator or from the motor inside the motor 1 in the region of the Intermediate part or even reduced in the inverter. The thermal barrier is also available as alone component one or more times, the motor side and / or the converter side of the Adapter plate of view be provided.

In further embodiments, the invention is between electronics and signal Power electronics of the converter a Wärmsperre provided. For further Embodiments of the invention is the signal electronics thermally conductive at least a special heatsink member for dissipating heat associated to the environment, this special heat sink part to the power electronics connected thermally conductive Heatsink parts a thermal barrier, including a high thermal resistance which.

Thermal barriers are either materials having a high thermal resistance executable or by appropriately guided suitable flow fields of air. The steering is Registered by fans or the like brought about or even using convective Currents, ie caused by suitable and distributed temperature differences on and in Converter motor.

In further embodiments of the invention are in accordance with general Safety necessary electrical insulation designed as thermal barriers. For example, in this case, the insulation between signal and power electronics are used or the adapter plate 10th

In further embodiments, the invention provides the first and second Connector part the only electrical interface of the inverter 2 is. This does not is a ground connection, also at dismantling and lifting of the inverter 2, so Pulling the plug 5 from the socket 6, is electrically provided.

In further embodiments of the invention heat sinks into the housing of the Inverter 2 integrated, wherein the housing comprises a material with low specific Heat resistance, is thus used a high specific thermal conductivity.

4 shows a part of the inventive series is shown. The invention Series comprises at least one size, each comprising two or more, each other contains different variants of drives. The drives each include a minimum a terminal box approach comprising engine, by way of example according to Figure 1, 2 or. 3

Within a given size are depending on the variant different attachments to the terminal box attachment executable. Thus, for the series of underlying engine 1 at various Variants, ie repeatedly used. Because such reuses are storage costs and further reducing cost and the series offers at great variance and flexibility a cost solution for many different applications.

Within a given size is a <b>first variant</b> as a motor with the terminal box approach mounted motor terminal box running. Instead of the designation motor terminal box the designation terminal box used. The motor terminal box 42 exerts Housing function for the mounted in its interior connecting elements for supply and Signal lines from. These wires or cables through the recesses 41 in the Housing wall of the motor terminal box 42 passes, said lead-throughs tight executable with glands or other seals. A version with a built-in the recesses 41 connector part is executable. Of the Motor terminal box can be executed with closed casing and is therefore not used to Setting up a converter because it a corresponding mechanical and electrical Interface for missing.

In the figure 4 is for this first variant of drives shown that the motor terminal box 42 can be mounted in different rotational orientations. Thus, depending on the application that Orientation be manufactured, in which the wires or cables have enough space.

At a <b>second variant</b> within one size of the series is the drive as a motor with running on the terminal box approach mountable intermediate part with which a Inverter to form a converter motor is connected. Thus, belonging to the second variant Inverter motors according to the figures 1, 2 and 3. Depending on the application, not only the Intermediate part 3 suitable orientable but also the type of the inverter, for example, by means of the performance class, the memory size of the electronic circuit, microcontroller type or different software, in particular permanently implemented as EEPROM software or . like Thus, the drive is extremely flexibly adapted for the particular application.

In further embodiments, the invention is as an asynchronous motor, a A synchronous motor or a reluctance motor used. However, all have a Terminal box approach 12, the mechanical interface to the intermediate part 3 or Motor terminal box 41 is the same design that always the same intermediate part 3 or same motor terminal box 41 is mounted. In particular, according to Figure 1, 2 or 3 a Inverter via the intermediate part connected, which thus to control the corresponding motor, for controlling the induction motor, for controlling the synchronous motor or to control the is reluctance motor running. In further embodiments, the invention is a Converter 2 used, of no structural change for an induction motor, and alternatively, is suitable for a synchronous motor for control applications. Thus, the storage costs greatly reduced since only one type of inverter must be maintained for both motors.

In further embodiments, the invention is a <b>third variant</b> as motor on the terminal box approach mountable tower running, the electrical and / or includes electronic circuitry for performing at least one function. This feature is an engine switch function, a soft-start, a brake rectifier and / or to different mains voltages operated electronic circuit. Exemplary is therefore a Softstarter used, in turn, the right to the terminal box approach has mechanical interface, so for example, a square, even triangular, has uniformly polygonal or circular running interface.

Other variants are executable by turn fitting, the cap, which turn the applicability for various applications is made possible.

A motor switch function is characterized by one or more electromechanical switches, such as relays or the like, and / or by electronic power switches, such as IGBT, thyristor or like realized. In particular, the neutral point is one operated in star connection Motor separable from such an electronic circuit breakers and closable. A soft start controls or regulates the supply of the motor such that at start-up is not the full Torque generated by the motor. A brake rectifier is used to supply a DC motor brake, in particular a B-side installation or attached brake. Such a brake rectifier includes a suitable running for rectifying circuit of one or more phases of the supply voltage unipolar direct voltage, so a constant, overlaid with ripple voltage generated. Through a suitable Implementation of the electronic circuit is such a brake rectifier also on a wide Range of supply voltages operable and thus provides an at various Mains voltages operated electronic circuit. In particular, is such a Brake rectifier operable at a German and US networks.

Inventive series include series that only first and second, first and third comprise or second and third and / or further variants

The invention also relates to inverter motors and series of drives that stand out suitable combination of these features result.

In the figures 5-7 a further embodiment of this invention is shown.

In the figures 5a, 5b, 5c and 5d, the transmission 51 is connected to a motor 52nd On the Motor 52 is connected via a bottom plate 55, an intermediate part 56 and an adapter plate 61, which in is enlarged to see the Figure 6 detail shown clearly, a converter having Heatsink 53 is placed. The intermediate part has on a side wall of cable glands 54 , which are provided in bores as omissions. The heat sink 53 protrudes laterally. The cable glands are 54 A-side, ie from the front, are accessible.

Means rotation of the elements base plate 55, the intermediate part 56 and the adapter plate 61 by 90 ° or multiples thereof are further embodiments without additional expenditure be manufactured. is therefore an adjustment to the spatial conditions of the respective system, in which the Gearmotor with inventive converter is installed, yet.

In the figure 5b extends the heatsink B-side, ie back on. Here, the intermediate part 56 mounted rotated by 90 ° compared to Figure 5a, the cable glands 54 now laterally are accessible. In addition, besides, also the bottom plate is rotated 90 ° as well as the Intermediate part 56. In the figure 5b extends the heatsink B-side, ie back on.

In the Figure 5c extends the heatsink B-side, ie back on. Here, the intermediate part 56 mounted rotated by 180 ° compared to Figure 5b, the cable glands 54 on the other side are accessible now. The bottom plate 55 and the adapter plate 61 are not present turned. In FIG 5c, the heat sink protrudes B-side, ie towards the rear, as in the figure 5b about.

In the figure 5d of the heat sink against the figure 5a extends over on the other side. It is the intermediate part 56 to 180 ° 5a also mounted rotated opposite figure, the Cable glands 54 are no longer A-side but B-side accessible. The bottom plate 55 is rotated 180 ° 5a compared to FIG. The adapter plate 61 is relative to Intermediate portion 56 and the inverter is not rotated.

6 shows an enlarged detail of the gear motor is shown with inverter. It is the seal 62 is shown between the cover 57 and the inverter heatsink 53rd The seal 62 also covers the connection of the cover 57 and of the intermediate part 56th However, this is in the Figure 6 can not be seen, because the adapter plate 61 outside surmounted such that the seal in this field is obscured.

In further embodiments of the invention, the seal 62 is also available as run thermal barrier, in particular, not only as a barrier to convective heat transported but also as insulation against infrared radiation.

In Figure 7, the seal 62 below the cover 57 in the area is adjacent to the Heatsink 53 shown. So that the inverter is mounted on the adapter plate 61 that a having rectangular cross-section and the connection board 71 comprises with connectors. The Intermediate part 56 has a likewise rectangular cross section corresponding to the adapter plate 61 toward and also to the base plate 55 back. The bottom plate 55 has a rectangular cross section to Intermediate part 56 on back and is designed so that different depending on the customer electronic options can be installed. The bottom plate 55 includes the engine 52 toward a square omission 74 and is thus tightly and releasably connected to the square Terminal box approach 73 of the motor 52nd

By means of the square connection between bottom plate 55 and motor 52 is a 90 ° or multiples thereof rotated mounting of the base plate 55 relative to the motor 52 executable. By means of the rectangular design of the intermediate part 56 and the connection to the Drive toward comprising the adapter plate 61, is a relatively rotated mounting of Intermediate part 56 allows the inverter through 180 °. Thus can be diverse achieve combinations.

8a shows the intermediate part 56, having the cable glands 54 and Threaded holes 85 includes the detachable connection with the inverter.

8b shows another also advantageously usable intermediate part 81, the serious one includes connectors.

8c shows another also advantageously usable intermediate part 83, the Cable glands 54 and M12 - Connector 84 includes.

Figure 8d shows another also advantageously usable intermediate part 82, the two rectangular connectors 87 covers.

Within a given size of the series of inverter motors are therefore depending on the customer various intermediate parts with different connectors and / or other cable entries usable. Thus, energy and / or information lines can be connected and the converter motor is easily electrically separable or connected.

Instead of the rectangular connections are in further embodiments of the invention either square or other geometries can be used advantageously. Depending on the geometry are even more or for example in circular formation endless Verdrehorientierungen realizable.

A simple and inexpensive further inventive embodiment, for instance by using a square intermediate part together with a square interface to the inverter through executable. Thus, the bottom plate and / or Adapter plate to save on, or at most for the installation of electrical or electronic parts, such as connectors, necessary.

In further embodiments of the invention are in this present document said rectangular formations designed as quadratic forms. In such are embodiments further advantages in terms of increased flexibility effective because other components and / or parts not only 180 ° rotational symmetry but even 90 ° have rotational symmetry.