Inverter motor

Abstract

Inverter motor, which comprises a motor housing, a connection device and a converter housing, wherein the connection device is attached to the motor housing, whereby the converter housing can be plugged onto the connection device, wherein a memory element with parameterization data for the converter is plugged into a suitable connector on the converter housing, characterized in that the storage element has lateral tongue elements which create a clip connection with the converter housing, wherein, when the storage element is plugged in, freely movable ends of the tongue elements lie outside the converter housing for releasing the clip connection.

Description

[0001] The invention relates to an inverter motor.

[0002] A converter motor with a terminal cover converter is known from DE 197 04 226 B4.

[0003] From DE 100 36 234 A1, the closest prior art is a frequency converter with a housing consisting of an upper part and a lower part.

[0004] A series of electric motors is known from DE 10 2004 063 920 A1.

[0005] The invention is therefore based on the object of developing an inverter motor.

[0006] According to the invention, the object is achieved according to the features specified in claim 1.

[0007] Important features of the invention for the converter motor are that the converter motor comprises a motor housing, a connection device, and a converter housing. The connection device is attached to the motor housing, and the converter housing can be plugged onto the connection device. This has the advantage that the converter can be easily attached to the motor and a motor can be easily retrofitted.

[0008] In an advantageous embodiment, the converter motor has a first and a corresponding second electrical connector device, wherein the first electrical connector device is arranged in the connection device, and the second electrical connector device is arranged on and / or in the converter housing. The advantage here is that the converter can be easily and securely electrically connected to the motor.

[0009] In a further advantageous embodiment, electronic components of a converter are arranged in the converter housing, which serve to control the motor. The advantage here is that the motor is controllable and compact.

[0010] In a further advantageous embodiment, a brake is arranged in the motor housing, which serves to hold or brake a motor shaft of the motor arranged in the motor housing, and a brake control for controlling the brake is arranged in the connecting device. The advantage here is that the motor can be braked and has a compact design.

[0011] In a further advantageous embodiment, a braking resistor, preferably a PTC resistor, is arranged in the connection device. In particular, the braking resistor is arranged between a wall of the connection device and the brake control. The advantage here is that the braking resistor is reliable and allows for good dissipation of braking heat, while at the same time the converter motor is compact.

[0012] According to the invention, a memory element containing parameterization data for the converter is plugged into a suitable connector on the converter housing. This has the advantage of making the converter motor easy to parameterize and the converter easy to replace.

[0013] According to the invention, the storage element has lateral tongue elements that create a clip connection with the converter housing. When the storage element is plugged in, freely movable ends of the tongue elements are located outside the converter housing for releasing the clip connection. This is advantageous in that the storage element is easily replaceable and securely held.

[0014] In a further advantageous embodiment, the converter housing projects beyond the connection device in the axial direction of the motor shaft, and a cooling element is arranged on the projecting portion of the converter housing, which is directed toward the motor housing. This is advantageous in that the converter motor is compact and the cooling element is protected.

[0015] In a further advantageous embodiment, the cooling element is thermally connected to a power module of the converter for cooling purposes. This has the advantage of effectively dissipating heat from the power module.

[0016] In a further advantageous embodiment, a cover of the converter housing is arranged on the side of the converter housing facing away from the motor housing, in particular wherein the cover is made of a thermally conductive material, preferably plastic or metal, preferably with a thermal conductivity coefficient of greater than 2 W / km. This is advantageous because the heat from the electronic components can be dissipated.

[0017] In a further advantageous embodiment, the cover is sealed from the rest of the converter and / or the connection device by means of a circumferential seal. This has the advantage of protecting the converter.

[0018] In a further advantageous embodiment, the cover has a recess into which a type identification plate can be inserted. The recess has two protrusions on its sides, so that only one corresponding type identification plate with indentations corresponding to the protrusions can be inserted. This is advantageous because the type identification plate can be mounted in a fail-safe manner during assembly.

[0019] Further advantages emerge from the dependent claims. The invention is not limited to the combination of features in the claims. Further possible combinations of claims and / or individual claim features and / or features of the description and / or the figures will become apparent to those skilled in the art, particularly from the problem and / or the problem posed by comparison with the prior art.

[0020] The invention will now be explained in more detail using an exemplary embodiment with reference to the drawing. The drawings show, purely schematically: Fig. 1: a converter motor in perspective view; Fig. 2: the converter and a connection device of the Fig. 1 shown inverter motor in exploded view; and Fig. 3: a section of the Fig. 2 shown converter and the connection device in the assembled state.

[0021] Fig. 1 shows an inverter motor 10 according to the invention. The inverter motor 10 has a motor housing 12, a connection device 14 arranged on the motor housing 12, and an inverter housing 16. The inverter housing 16 is arranged at the end of the connection device 14 facing away from the motor housing 12.

[0022] An asynchronous motor is preferably arranged in the motor housing 12. A flange 40 is preferably formed on the output end of the motor housing 12. In a further embodiment, feet are attached or formed on the motor housing 12 instead of or in addition to the flange 40. A shaft stub 42 of the rotor shaft of the asynchronous motor protrudes from the output side of the motor housing 12. A key is preferably provided on the shaft stub 42.

[0023] A fan cover 46 is mounted on the end of the motor housing 12 opposite the output end. The fan cover 46 encloses a fan wheel driven by the rotor shaft, forming a housing.

[0024] Cooling fins 46 are formed on the motor housing 12, extending from the output end to the fan shroud. In the area of the cooling fins 46, the motor housing 12 has a connector base that is shaped to fit the connector 14.

[0025] The connection device 14 comprises a basically rectangular frame. The frame is covered by the connection device base on the motor side and by the converter housing 16 on the opposite side. A suitable seal 38 is advantageously clamped between the connection device base and the connection device 14.

[0026] An outer wall of the connection device 14 has square, particularly rectangular, recesses 62 toward the connection device base. The recesses 62 extend to the edge of the outer wall, which faces the motor housing 12. In the corner areas, the recesses 62 extend around the corners of the outer wall. The recesses serve to better identify the converter motor 10 and to help users identify the manufacturer of the converter motor 10.

[0027] The connecting device 14 is attached, in particular screwed, to the connecting device base. Advantageously, the connecting device base has a square basic shape, so that the connecting device can be attached to the connecting device base in a manner that allows it to be rotated by 90 degrees.

[0028] Furthermore, in the illustrated embodiment, a brake controller 24 and a braking resistor 26 are arranged in the connecting device 14. The braking resistor 26 is thermally conductively connected to a connecting device wall. The brake controller 24 is arranged on the side of the braking resistor 26 opposite the connecting device wall.

[0029] The braking resistor 26 is preferably designed as a PTC resistor. In a particularly preferred embodiment, an insulating film 50 is arranged between the braking resistor 26 and the brake control 24.

[0030] Connecting cables for the stator windings of the asynchronous motor are routed into the connecting device 14. The connecting cables are electrically connected in the connecting device 14 to a first connector device 18. For this purpose, the cables connected to the stator winding are preferably connected to a terminal block. Further connecting cables then lead from the terminal block to the first connector device 18. For this purpose, the further connecting cables are attached to the terminal block by means of cable lugs and thus connected to the corresponding cables of the stator winding. The other end of the further connecting cables is electrically connected to corresponding contacts of the first connector device 18 by means of terminals of the first connector device.

[0031] The first connector device is advantageously firmly connected to the connection device 14, in particular screwed or clipped. Contact elements of the first connector device 18 are directed toward the converter housing 16.

[0032] The converter housing 16 can be plugged onto the connection device 14. For this purpose, corresponding contact elements of a second connector part 20 are plugged together with the contact elements of the first connector part. In the embodiment shown in the drawing, the converter housing 16 is placed directly onto the connection device 14 and screwed to it. For this purpose, the corners of the frame are reinforced and have a basically triangular cross-section. Threaded holes are provided in the reinforced corners. Matching screws are guided through recesses in the converter housing 16 and press the converter housing 16 onto the connection device 14 when the matching screws are screwed into the threaded holes.

[0033] A sealing element is squeezed in between the connection device 14 and the converter housing 16 by their connection.

[0034] In the embodiment shown in the drawing, the converter housing 16 is constructed in two parts, with a cover part 52 and a tray part 54. The cover part 52 forms the part of the converter housing 16 facing away from the connection device 14. The tray part 54 encloses the converter, forming a housing, toward the connection device 14 and the motor housing 12. The converter includes a circuit board 58 on which the necessary electronic components 22 are arranged.

[0035] The tray part 54 has recesses for the passage of components such as the second connector device. The second connector device 20 is electrically connected to the circuit board 58.

[0036] For example, the electronic components include a power module 56 with corresponding power semiconductors as switching elements for the rectifier and / or inverter of the converter. The power module 56 is thermally connected to the cooling element 34. For this purpose, the tray part 54 has a further corresponding recess.

[0037] A control electronics of the converter is preferably arranged in the area of the circuit board 58, which is provided in the area of the converter housing 16 arranged above the connection device 14.

[0038] Larger components advantageously protrude into the connection device 14, wherein the tray part 54 follows the contour of the electronic components 22.

[0039] The cooling element 34 is arranged on the side of the cover part facing the motor housing 12. Cooling fingers 60 of the cooling element are preferably arranged on a part of the converter housing 16 that projects beyond the connection device. The cooling fingers extend toward the motor housing 12. The ends of the cooling fingers 60 are enveloped in a contour that follows the outer surface of the motor housing 12.

[0040] In other embodiments not shown, further shapes of the cooling element 34 are also possible.

[0041] Further recesses in the tray part 54 serve to pass through operating elements for setting the converter or a plug-in device 32 for inserting a memory element 32. The memory element 32 is preferably used to store parameterization data of the converter.

[0042] The contact elements provided at one end of the storage element 32 naturally fit tightly against the corresponding contact elements of the plug-in device, forming a frictional connection. To facilitate insertion and removal of the storage element 32, cylindrical projections are arranged in the corner areas of this end of the storage element 32. These projections protrude beyond this end and the contact elements in the insertion direction. The cylindrical projections can also be designed as additional contact elements.

[0043] For a simple and secure, detachable connection of the storage element 32 to the plug-in device, the storage element is held in the plug-in device with a clip connection, preferably in a form-fitting and / or force-fitting manner. To create a simple and securely detachable clip connection, the storage element 32 has elastic tongue elements.

[0044] The tongue elements are formed on the lateral end regions of the end with the contact elements on the storage element 32 and run parallel and spaced apart from two opposite side surfaces of the storage element 32. When the storage element 32 is plugged in, the tongue elements protrude with their free end into the connection device.

[0045] To form the positive connection, the tongue elements have triangular projections in a central section. The triangular projections face away from the storage element. Toward the end with the contact elements, the triangular projections preferably have a surface that is slanted toward the respective tongue element, and toward the other end of the storage element 32, they have a surface that is perpendicular to the tongue element.

[0046] The projections interact with the plug-in device in such a way that, upon insertion, the triangular projections slide past an inwardly projecting projection of the plug-in device, thereby pressing the elastic tongue elements further and further toward the storage element 32 until the triangular projections are overcome. The elastic tongue elements then snap back into their rest position, and a portion of the triangular projections engage behind the inwardly projecting projections of the plug-in device. Instead of the projection, the opening in the tray part 54 has suitable dimensions for the storage element 32, so that, when inserted, the triangular projection engages behind the tray part 54.

[0047] The free ends preferably have outwardly directed, mutually opposite retaining sections. The retaining sections preferably have a grooved surface facing away from the storage element 32. The retaining sections are bent away from the storage element 32 and are thickened. If the retaining sections are pressed toward each other, the clip connection is released, since the partial areas of the triangular projections no longer engage behind the inwardly projecting projections or the tray part 54. The storage element 32 can thus be easily and safely removed from and inserted into the plug-in device when the converter housing 16 is detached from the connection device.

[0048] The motor housing 12, the converter housing 16 and the cooling element 34 form a sealed overall housing, which can be designed with a high degree of protection, such as protection against jet water and dust.

[0049] To increase the surface area and improve heat dissipation, the cover part advantageously has grooves on its surface facing away from the motor housing 12. These grooves are convex in the axial direction of the motor shaft and concave perpendicular to it. The specific arrangement and size of the grooves also serve as an identification feature and assignment to a specific manufacturer.

[0050] The cover also has a preferably cuboid-shaped recess 64. The recess 64 serves to accommodate a type identification plate that identifies the converter in the converter housing 16. Since different converter electronics can be installed in the converter housing 16, it is necessary to label them externally.

[0051] For pre-identification, the recess 64 has a protrusion on at least two sides. The protrusions vary in size relative to the dimensions of the recess 64 depending on the converter model. The type identification plates have indentations corresponding to the protrusions. This means that only a predefined type of type identification plate can be inserted into the recess 64 of the corresponding cover. List of reference symbols 10 Inverter motor 12 engine housing 14 Connection device 16 inverter housings 18 first connector device 20 second connector device 22 electronic components 24 Brake control 26 Braking resistor 28 Connection device wall 30 storage element 32 plug-in device 34 Cooling element 36 concave recess 38 Seal 40 flange 42 stub shaft 44 key 46 Fan cover 48 cooling fins 50 insulating foil 52 cover part 54 tub part 56 Power module 58 circuit board 60 cold fingers 62 Deepening 64 trough

Claims

[1] Inverter motor, which comprises a motor housing, a connection device and a converter housing, wherein the connection device is attached to the motor housing, whereby the converter housing can be plugged onto the connection device, wherein a memory element with parameterization data for the converter is plugged into a suitable connector on the converter housing, characterized by , that the storage element has lateral tongue elements which create a clip connection with the converter housing, wherein, when the storage element is plugged in, freely movable ends of the tongue elements lie outside the converter housing for releasing the clip connection. [2] Inverter motor according to claim 1, characterized by , that the inverter motor has a first and a corresponding second electrical connector device, wherein the first electrical connector device is arranged in the connection device, and the second connector device is arranged on and / or in the converter housing. [3] Inverter motor according to claim 1 or 2, characterized by that electronic components of a converter are arranged in the converter housing, which are used to control the motor. [4] Inverter motor according to one of the preceding claims, characterized by that a brake is arranged in the motor housing, which serves to hold or brake a motor shaft of the motor arranged in the motor housing, and a brake control for controlling the brake is arranged in the connecting device. [5] Inverter motor according to one of the preceding claims, characterized bythat a braking resistor, preferably as a PTC resistor, is arranged in the connecting device, in particular the braking resistor is arranged between a connecting device wall and the brake control. [6] Inverter motor according to one of the preceding claims, characterized by that the converter housing projects beyond the connection device in the axial direction of the motor shaft and a cooling element is arranged on the projecting section of the converter housing, which cooling element is directed towards the motor housing. [7] Inverter motor according to one of the preceding claims, characterized by that the cooling element is thermally connected to a power module of the converter for its cooling. [8] Inverter motor according to one of the preceding claims, characterized bythat a cover of the converter housing is arranged on the side of the converter housing facing away from the motor housing, in particular wherein the cover is made of a thermally conductive material, preferably plastic or metal, preferably with a thermal conductivity coefficient of greater than 2 W / Km. [9] Inverter motor according to one of the preceding claims, characterized by that the cover is sealed from the rest of the converter and / or the connection device by means of a circumferential seal. [10] Inverter motor according to one of the preceding claims, characterized by that the lid has a recess into which a type identification plate can be inserted, wherein the recess has two protrusions on its sides so that only one associated type identification plate with indentations corresponding to the protrusions can be inserted.

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