Source: https://patents.google.com/patent/DE19704226B4/en
Timestamp: 2020-01-25 05:51:48
Document Index: 308940967

Matched Legal Cases: ['art.\n1', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 13', 'art 14', 'art 5']

DE19704226B4 - Klemmdeckelumrichter - Google Patents
Klemmdeckelumrichter
DE19704226B4
DE19704226B4 DE19704226A DE19704226A DE19704226B4 DE 19704226 B4 DE19704226 B4 DE 19704226B4 DE 19704226 A DE19704226 A DE 19704226A DE 19704226 A DE19704226 A DE 19704226A DE 19704226 B4 DE19704226 B4 DE 19704226B4
DE19704226A
DE19704226A1 (en
Jörg Dr. Roth Stielow
1997-02-05 Application filed by SEW-Eurodrive GmbH and Co KG filed Critical SEW-Eurodrive GmbH and Co KG
1997-02-05 Priority to DE19704226A priority Critical patent/DE19704226B4/en
1998-01-28 Priority claimed from DE1998511281 external-priority patent/DE59811281D1/en
1998-08-06 Publication of DE19704226A1 publication Critical patent/DE19704226A1/en
2004-09-30 Publication of DE19704226B4 publication Critical patent/DE19704226B4/en
2005-01-17 First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7819311&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE19704226(B4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Electric motor with an upstream frequency converter for speed control, a housing of the frequency converter being provided with a heat sink, characterized in that an intermediate part (5) which replaces a terminal box and contains connecting elements such as terminals and / or plugs for supply and signal lines, directly on the motor (1) is arranged, while on the side of the intermediate part (5) facing away from the motor (1) the housing (6) of a frequency converter (7) is arranged thermally insulated and the housing (6) of the frequency converter (7) the intermediate part (5) protrudes laterally, and that the heat sink (8, 8 ') on the side facing the motor (1) of the projecting part of the housing (6) is in turn thermally insulated from it, but is in direct thermal connection with the power output stage of the power electronics.
The invention relates to an electric motor the preamble of claim 1.
A converter is understood to mean a converter which is the mains voltage with constant frequency and voltage in transferred a three-phase voltage system with variable frequency and variable voltage. This Three-phase voltage system is the three-phase motor to be driven (asynchronous machine) supplied so the speed of the electric motor by appropriate choice of Specify the output frequency of the converter.
In contrast to the conventional one Arrangement in which the converter as a separate unit in a control cabinet is arranged and over a motor lead of up to 100 m in length feeds the electric motor, Electric motors are already known, in which the electric motor controlling signal and power electronics in the electric motor as mechanical unit is integrated. This should then be the one before required cabinet space requirements can be saved and also a Reduction of the EMC problems that occur with the conventional Arrangement by radiation due to the long motor cables of up to 100 m in length becomes. For integrating the frequency converter into the electric motor is provided on the one hand, the electronics in one of the terminal boxes of the Install the electric motor. The connection elements such as terminals and / or Connector for Supply and signal lines are still within the Terminal box arranged. Such an arrangement in the frequency converter and the electric motor are structurally connected to one another, in particular with regard to the manufacturing technology and the associated Manufacturing costs have numerous advantages. However, problems arise the cooling of the Frequency converter, in particular the power output stage of the power electronics high heat loss generated. To this heat loss of the frequency converter must be connected to the electric motor on the B side (the B-side is the one facing away from the motor shaft that is driving away Side) a separate special fan cover with fan be grown, this fan by the electric motor itself or by an additional one separate fan motor driven becomes.
Instead of integrating the frequency converter the housing can be in the terminal box of the frequency converter also mounted on the B-side of the electric motor become. Here too Dissipation of the heat loss A fan is attached to the electric motor of the frequency converter on the B side be, which also here by the electric motor itself or a separate fan motor is driven. In this variant, only the connection elements are then such as terminals and / or plugs for Supply and signal lines housed in one or more terminal boxes, so this keep their standard size. However, by installing the electronics on the B-side end the length of the electric motor of the electric motor enlarged. A further enlargement of the Overall length due to the necessary special fan cover.
Due to the special parts described When the converter is integrated in the electric motor, it cannot be easier Standard motor can be used. They are for attaching frequency converters as well as special fan cover and fan motor if necessary Special designs on the electric motor necessary. Moreover through the additional Fan The space required causes additional annoying fan noises and the energy consumption for the Fan as an active cooling element is extremely high. The one for the fan necessary separate engine also provides an expensive component.
From the DE 94 15 935 U1 is a heating circulation pump known with a motor, the electrical connection is designed as a socket. A terminal box with built-in electronics, a power output stage and a plug is provided, the plug being plugged directly onto the socket in the motor without an intermediate part. The supply cable is led directly into the terminal box with the electronics and the power amplifier built into it. The power output stage emits its heat loss to the metal terminal box with the electronics built into it. In this way, the electronics are exposed to high temperatures.
From the essay by M. Henze using ABB technology 4/1996, pp. 4-8 is an electric motor according to the preamble of claim 1 known as the integral motor from a combination of standard asynchronous motor and attached frequency converter. The frequency converter is Arranged on the B side of the engine, so that the engine itself for this B-side mounting of the frequency converter specially designed and must be made. In the engine described there is the electronics in the motor housing and must for high temperatures and vibrations. It can therefore not be usual Engines for direct network operation is already being produced in large quantities and not specifically for the converter operation are designed.
The invention is based on the object Basically, an electric motor of the type mentioned above to train that he simple and inexpensive can be manufactured and the frequency converter without complex special parts on the conventional electric motor can be integrated.
This task is done by an electromo Tor solved according to claim 1.
In the electric motor according to the invention with integrated frequency converter, the frequency converter is now also connected via the terminal box, however, the housing of the frequency converter and the housing of the intermediate part itself separated from each other. Such a frequency converter can be used accordingly also mounted on a conventional electric motor by means of the intermediate part because now the additional Components, such as fans and separate fan motor, omitted. The cooling and thus the dissipation of the lost heat is now carried out by means of a on the housing of the frequency converter provided heat sink. So it is no longer the entire motor assembly for the purpose of cooling the frequency converter, especially the heat loss the power stage, to adapt through special designs, but there are only appropriate measures on the housing of the Frequency converter itself, for example, the adjustment the effective cooling surface of the Heat sink the power electronics.
usual B-side attachments of motors such as Fan, encoder, brakes and / or Combinations of these can with no restrictions be grown. The frequency converter is due to the configuration according to the invention not on an additional one Fan or a special embodiment of the fan or the fan cover reliant. The connection elements such as terminals and / or plugs for Supply and signal lines are now housed in the intermediate part and can simply after disassembling the frequency converter housing can be achieved. To the space requirements for the electric motor with integrated frequency converter not unnecessary is to enlarge in training provided that the casing of the frequency converter extends beyond the intermediate part in the longitudinal direction and the heat sink below of the housing is arranged laterally of the intermediate part. Preferably there are the signal electronics of the frequency converter above the intermediate part and the power electronics are arranged above the heat sink in the housing. In this way, the power electronics, in particular their output stage, heat loss directly from heat conduction passed on to the heat sink become. Because of the possible temperature conditions in the housing The frequency converter can do this in the field of signal electronics, which is extremely sensitive is, if possible kept cool become. In the electric motors known from the prior art with integrated frequency converter, all parts are equally warm, because them by screwing and using aluminum alloys for the casing of the frequency converter are thermally well coupled.
To the heat sink with the power stage of the frequency converter to couple well thermally and thus the heat loss of To derive power output stage, the heat sink preferably consists of a High thermal conductivity material. Can accordingly then the power semiconductors of the power output stage are used very highly be without the Signal electronics are damaged. The heat sink can also have a volume and its effective cooling surface very much compact design become. In a further development it is provided that the housing of the Frequency converter made of a material with high thermal conductivity consists. The heat loss of the is then correspondingly derived integrated frequency converter on the one hand over the surface of the housing of the frequency converter, on the other hand via the heat sink and finally by means of natural convection and radiation. In particular, this can cause that heat loss Frequency converter, which cannot be removed via the heat sink, efficiently via the casing of the frequency converter to the ambient air.
The heat sink itself can be used to enlarge its surface through a variety of cooling fins or formed cooling rods his.
So that the electric motor is fast and simply with the frequency converter that is adapted to the operating conditions can be provided, it is appropriate to have a detachable connection between the frequency converter and to provide the electric motor, so that each to be assigned Units in a simple manner, for example by means of a plug connection, can be connected to the line, without this special expertise is required. The frequency converter just have to go through Solving the Disassemble the connection from the motor or mount it on the motor.
In training are in the intermediate part Interference suppression equipment built-in. This way there are no additional external facilities necessary for this purpose.
In a preferred embodiment, the thermal decoupling between frequency converter and electric motor is obtained in that at least one heat barrier is provided between the housing of the frequency converter and the heat sink and / or the intermediate part. A heat barrier between the housing and the heat sink reduces on the one hand the direct heat transfer from the heat sink to the housing of the frequency converter and on the other hand also the indirect heat transport by reducing the air circulation inside between the heat sink and the housing of the frequency converter. If the heat barrier is provided between the housing of the frequency converter and the intermediate part, it reduces on the one hand the direct heat transfer from the stator of the motor via the intermediate part to the housing of the frequency converter and on the other hand also the indirect heat transport by reducing the air circulation inside between the intermediate part and the housing of the drive. In preferred Embodiment separate heat barriers are provided between the housing of the frequency converter and the heat sink on the one hand and the intermediate part on the other. Accordingly, the heat barriers can then also be made of a different material with low thermal conductivity. It is also advantageous if the heat barriers cover the entire contact area between the housing of the frequency converter and the intermediate part or heat sink.
In another preferred embodiment is between the case of the frequency converter and the heat sink and / or the intermediate part is provided with at least one moisture barrier. This will allow the exchange of moisture between the intermediate part and the frequency converter and the frequency converter and the heat sink is reduced. Preferably form the heat barriers and Moisture barriers a functional unit. Accordingly, so through the heat barriers the exchange of moisture between one side of the heat barrier and the other side can be reliably reduced in the entire range.
Instead of separate heat barriers or in addition to the heat barriers Is it possible, the intermediate part made of a material with low thermal conductivity to manufacture. In this way, the function of the thermal barrier taken from the intermediate part or else the heat transport will continue reduced. It is also possible, the housing of the Train frequency converter as a moisture barrier, so that this the exchange of moisture between the intermediate part and the frequency converter is reduced.
To the housing of the frequency converter too outward to complete so that the Use largely independent from local Conditions such as dusty atmosphere etc., is surround the heat and / or moisture barriers the housing of the frequency converter preferably sealing. Thanks to this multifunctional design particularly inexpensive a high degree of protection penetrating from the outside liquids and / or dust can be reached.
A particularly inexpensive and easy to disassemble or assemble reach when the housing the frequency converter is designed in the form of a cover part, which can be placed on the intermediate part as a lower part to close it is. This is a simple replacement of the frequency inverters possible, and on the other hand, the intermediate part can be used as a simple terminal box Removal and placement of another lid can be used.
Other advantages and features of Invention result from the claims and from the following Description, in the exemplary embodiments are explained in detail with reference to the drawing. It shows:
1 a side view of an electric motor according to the invention with an integrated frequency converter in a first embodiment;
2 a cross section through the frequency converter 1 ;
3 an electric motor according to the invention with an integrated frequency converter in a second embodiment; and
4 a perspective view of a frequency converter detached from the intermediate part and the intermediate part.
1 shows a closed, surface-cooled electric motor in a first embodiment 1 , which is provided in a known manner with a stator and a rotor in its interior. The housing 2 has on the outside several cooling fins increasing its surface area in order to achieve better heat dissipation. B side is inside a fan cover 3 A fan is arranged to ventilate the electric motor. The aborting motor shaft end is on the A side 4 arranged.
On the outside of the case 2 is between the A side and the B side of the electric motor 1 an intermediate part 5 arranged, which replaces the terminal box otherwise provided there and therefore has connection elements such as terminals and / or plugs for supply and signal lines. The intermediate part 5 can consist of a material with low thermal conductivity. On the housing 2 of the electric motor 1 facing away from the top of the stator of the electric motor 1 attached intermediate part 5 is a housing 6 of a frequency converter 7 provided, which is in the form of a cover part on the top of the intermediate part 5 this is mounted in a closing manner. The housing 6 dominates the intermediate part 5 laterally towards the B-side end of the electric motor 1 and has a heat sink on its free underside 8th on, which is formed by cooling fins in the illustrated embodiment. Between the intermediate part 5 and the housing 6 of the frequency converter 7 is a flat heat barrier 9 , Casing 6 and intermediate part 5 sealing against each other, provided. Likewise, between the case 6 and the heat sink 8th another separate heat barrier 10 intended. These heat barriers 9 and 10 can also be designed as moisture barriers at the same time. It is also possible to provide additional moisture barriers. The two heat barriers 9 and 10 are preferably made of a material with low thermal conductivity and are flat.
How 2 can be seen is above the heat sink 8th the power stage 11 the power electronics of the frequency converter 7 within the heat barrier 10 arranged. The signal electronics of the frequency converter 7 is accordingly above the intermediate part 5 arranged.
At the in 3 illustrated embodiment, the same components are provided with the same reference numerals. In contrast to the previous embodiment, the thermal barrier 12 between the housing 6 and the intermediate part 5 as well as the heat sink 8th at the in 3 illustrated embodiment formed in one piece. This summary enables a particularly cost-effective set-up to be achieved.
At the in 3 The illustrated embodiment is the cover or the housing 6 of the frequency converter from the intermediate part 5 dismantled. The heat sink 8th' is formed in this embodiment to enlarge its surface by a plurality of cooling rods.
To make an electrical connection between the frequency converter 7 and the intermediate part 5 to create is a connector 13 . 14 intended. One part 13 the connector is fixed to the frequency converter 7 connected and the other part 14 firmly with the intermediate part 5 ,
Electric motor with an upstream frequency converter for speed control, a housing of the frequency converter being provided with a heat sink, characterized in that an intermediate part which replaces a terminal box and contains connecting elements such as terminals and / or plugs for supply and signal lines ( 5 ) directly on the engine ( 1 ) is arranged while on the the engine ( 1 ) opposite side of the intermediate part ( 5 ) thermally insulated from the housing ( 6 ) of a frequency converter ( 7 ) is arranged and the housing ( 6 ) of the frequency converter ( 7 ) the intermediate part ( 5 ) protrudes laterally, and that the heat sink ( 8th . 8th' ) on the engine ( 1 ) facing side of the protruding part of the housing ( 6 ) is in turn arranged thermally insulated from it, but is in direct thermal connection with the power output stage of the power electronics.
Electric motor according to claim 1, characterized in that the heat sink ( 8th . 8th' ) below the housing ( 6 ) to the side of the intermediate part ( 5 ) is arranged.
Electric motor according to claim 2, characterized in that the signal electronics of the frequency converter ( 7 ) above the intermediate part ( 5 ) and the power electronics ( 11 ) above the heat sink ( 8th . 8th' ) in the housing ( 6 ) are arranged.
Electric motor according to one of claims 1-3, characterized in that the heat sink ( 8th . 8th' ) is made of a material with high thermal conductivity.
Electric motor according to claim 4, characterized in that the heat sink ( 8th ) is formed by a large number of cooling fins.
Electric motor according to claim 4, characterized in that the heat sink ( 8th' ) is formed by a large number of cooling rods.
Electric motor according to one of claims 1-6, characterized in that the housing ( 6 ) of the frequency converter ( 7 ) is made of a material with high thermal conductivity.
Electric motor according to one of claims 1-7, characterized in that the frequency converter ( 7 ) using a connector ( 13 . 14 ) electrically with the intermediate part ( 5 ) is connectable.
Electric motor according to claim 8, characterized in that a connector part ( 13 ) with the frequency converter ( 7 ) and the other ( 14 ) firmly with the intermediate part ( 5 ) connected is.
Electric motor according to one of claims 1-9, characterized by in the intermediate part ( 5 ) provided facilities for radio interference suppression.
Electric motor according to one of claims 1-10, characterized by at least one between the housing ( 6 ) of the frequency converter ( 7 ) and the heat sink ( 8th ) and / or the intermediate part ( 5 ) provided heat barrier ( 9 . 10 . 12 ).
Electric motor according to claim 11, characterized by separate heat barriers ( 9 . 10 ) between the housing ( 6 ) of the frequency converter ( 7 ) and the heat sink ( 8th ) on the one hand and the intermediate part ( 5 ) on the other hand.
Electric motor according to one of claims 1-12, characterized by at least one between the housing ( 6 ) of the frequency converter ( 7 ) and the heat sink ( 8th ) and / or the intermediate part ( 5 ) provided moisture barrier.
Electric motor according to claim 13, characterized in that the heat barriers ( 9 . 10 . 12 ) and moisture barriers form a functional unit.
Electric motor according to one of claims 1-11 or 13, characterized in that the intermediate part ( 5 ) is made of a material with low conductivity.
Electric motor according to one of claims 1-12 or 15, characterized in that the housing ( 6 ) of the frequency converter ( 7 ) as moist Keitssperre is formed.
Electric motor according to one of the preceding claims, characterized characterized that the Warmth- and / or moisture barriers the housing of the frequency converter surrounded by sealing.
Electric motor according to one of the preceding claims, characterized in that the housing ( 6 ) of the frequency converter ( 7 ) is designed in the form of a cover part, which on the intermediate part ( 5 ) as a lower part, closing it, can be put on.
DE19704226A 1997-02-05 1997-02-05 Klemmdeckelumrichter Expired - Fee Related DE19704226B4 (en)
DE19704226A DE19704226B4 (en) 1997-02-05 1997-02-05 Klemmdeckelumrichter
JP53371198A JP4063888B2 (en) 1997-02-05 1998-01-28 Electric motor with upstream frequency converter
EP04002173A EP1422811A3 (en) 1997-02-05 1998-01-28 Electric motor with inverter
AT98905360T AT265753T (en) 1997-02-05 1998-01-28 ELECTRIC MOTOR WITH UPstream FREQUENCY INVERTER
EP20100012846 EP2270961A3 (en) 1997-02-05 1998-01-28 Electric motor with frequency converter
PCT/EP1998/000445 WO1998035424A1 (en) 1997-02-05 1998-01-28 Electric motor with an upstream frequency converter
CA002279412A CA2279412C (en) 1997-02-05 1998-01-28 Electric motor with an upstream frequency converter
DE29880014U DE29880014U1 (en) 1997-02-05 1998-01-28 Electric motor with a frequency converter
EP20100012845 EP2270960A3 (en) 1997-02-05 1998-01-28 Electric motor with frequency converter
US09/355,615 US6229232B1 (en) 1997-02-05 1998-01-28 Electric motor with an upstream frequency converter
BR9807662-0A BR9807662A (en) 1997-02-05 1998-01-28 Electric motor with frequency converter amounting side
DE1998511281 DE59811281D1 (en) 1997-02-05 1998-01-28 ELECTRIC MOTOR WITH UPstream FREQUENCY INVERTER
EP98905360A EP0958646B2 (en) 1997-02-05 1998-01-28 Electric motor with an upstream frequency converter
IT1998MI000051U IT243750Y1 (en) 1997-02-05 1998-02-02 Electric motor with frequency converter inserted upstream
FR9801299A FR2761212B3 (en) 1997-02-05 1998-02-04 Electric motor with upstream frequency converter
DE19704226A1 DE19704226A1 (en) 1998-08-06
DE19704226B4 true DE19704226B4 (en) 2004-09-30
ID=7819311
DE19704226A Expired - Fee Related DE19704226B4 (en) 1997-02-05 1997-02-05 Klemmdeckelumrichter
DE29880014U Expired - Lifetime DE29880014U1 (en) 1997-02-05 1998-01-28 Electric motor with a frequency converter
US (1) US6229232B1 (en)
EP (4) EP0958646B2 (en)
JP (1) JP4063888B2 (en)
AT (1) AT265753T (en)
BR (1) BR9807662A (en)
CA (1) CA2279412C (en)
DE (2) DE19704226B4 (en)
FR (1) FR2761212B3 (en)
IT (1) IT243750Y1 (en)
WO (1) WO1998035424A1 (en)
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1997-02-05 DE DE19704226A patent/DE19704226B4/en not_active Expired - Fee Related
1998-01-28 JP JP53371198A patent/JP4063888B2/en not_active Expired - Fee Related
1998-01-28 DE DE29880014U patent/DE29880014U1/en not_active Expired - Lifetime
1998-01-28 AT AT98905360T patent/AT265753T/en unknown
1998-01-28 EP EP98905360A patent/EP0958646B2/en not_active Expired - Lifetime
1998-01-28 CA CA002279412A patent/CA2279412C/en not_active Expired - Fee Related
1998-01-28 US US09/355,615 patent/US6229232B1/en not_active Expired - Lifetime
1998-01-28 EP EP20100012845 patent/EP2270960A3/en not_active Withdrawn
1998-01-28 WO PCT/EP1998/000445 patent/WO1998035424A1/en active IP Right Grant
1998-01-28 BR BR9807662-0A patent/BR9807662A/en not_active Application Discontinuation
1998-01-28 EP EP04002173A patent/EP1422811A3/en not_active Withdrawn
1998-01-28 EP EP20100012846 patent/EP2270961A3/en not_active Withdrawn
1998-02-02 IT IT1998MI000051U patent/IT243750Y1/en active
1998-02-04 FR FR9801299A patent/FR2761212B3/en not_active Expired - Lifetime
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Owner name: PAPST LICENSING GMBH & CO. KG, DE
Free format text: FORMER OWNER: SEW-EURODRIVE GMBH & CO. KG, 76646 BRUCHSAL, DE
Free format text: FORMER OWNER: SEW-EURODRIVE GMBH & CO KG, 76646 BRUCHSAL, DE
2016-11-09 R079 Amendment of ipc main class