WO1999010654A1 - Electric compressor - Google Patents

Electric compressor Download PDF

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Publication number
WO1999010654A1
WO1999010654A1 PCT/EP1998/004710 EP9804710W WO9910654A1 WO 1999010654 A1 WO1999010654 A1 WO 1999010654A1 EP 9804710 W EP9804710 W EP 9804710W WO 9910654 A1 WO9910654 A1 WO 9910654A1
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WO
WIPO (PCT)
Prior art keywords
compressor
motor
drive motor
spiral
rotor
Prior art date
Application number
PCT/EP1998/004710
Other languages
German (de)
French (fr)
Inventor
Ullrich Masberg
Andreas GRÜNDL
Bernhard Hoffmann
Original Assignee
Isad Electronic Systems Gmbh & Co. Kg
Gründl Und Hoffmann Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Isad Electronic Systems Gmbh & Co. Kg, Gründl Und Hoffmann Gmbh filed Critical Isad Electronic Systems Gmbh & Co. Kg
Publication of WO1999010654A1 publication Critical patent/WO1999010654A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving

Definitions

  • the invention relates to an electrically driven compressor of the type mentioned in the preamble of claim 1.
  • Such compressors in particular of the spiral type, which are mainly used in refrigeration and air conditioning systems, are known from numerous publications.
  • All of the above-mentioned electrically driven compressors each consist of a spiral compass and an electric motor, which are operatively connected to one another via a common shaft.
  • Spiral compressor and electric motor are in a common housing. Since the compressor and the hotor are arranged one behind the other (one above the other), the overall height is relatively large. For this reason, the units mentioned are hardly suitable for installation in motor vehicles.
  • the object of the invention which is essentially solved with claim 1, is to provide an electrically driven compressor that is as small as possible, especially for use in cooling and air conditioning systems of motor vehicles.
  • a compressor for an air conditioner in a motor vehicle requires - regardless of the compressor principle - approx. 2 - 5 kW drive power with a maximum cooling capacity of approx. 4 - 7 kW.
  • This cooling capacity range is easily covered by the constructions according to the invention. Since the compressor is accommodated in the rotor or stator of the electric motor, the entire unit is particularly small. Therefore, the compressor provided with the drive motor configured according to the invention can advantageously be integrated in hybrid drives of motor vehicles. Because of the comparatively low overall height, there is also a weight saving.
  • a control can be assigned directly to the electric drive motor of the compressor. Since no start / stop operation is required, there are no switching surges. This results in overall noise reduction and - since there are no downtime losses - better efficiency.
  • the compressor according to the invention Since the compressor according to the invention has such small dimensions, it can be installed directly wherever it is needed. Long and thus complex cooling lines can therefore be omitted. This saves onage time.
  • a compressor of the spiral type has proven to be particularly suitable, since it has a high degree of efficiency at all speeds that are driven through.
  • the reluctance motor proposed as the drive motor is particularly inexpensive: no separate winding is required for the rotor.
  • the motor operated with permanent magnet (s) (synchronous
  • H ⁇ tor is designed as an external rotor. It has a high tightening torque and overall an above-average efficiency.
  • the compressor according to the invention is suitable for practically every application.
  • Fig. 1 shows in longitudinal section a scroll compressor driven by a reluctance motor.
  • Fig. 2 also shows a longitudinal section through an electrical. powered spiral denser; the electric motor is here. permanently excited.
  • a spiral compressor 4 and a reluctance motor 6 are located in a common cylindrical housing 8.
  • the motor 6 is arranged in a ring around the compressor 4.
  • This motor 6 has a shaft 10 which is rotatably mounted with a bearing plate 12 relative to the housing 8.
  • the shaft 10 of the motor 6 drives a circulating element 16 of the scroll compressor 4.
  • the rotating element 16 executes an eccentric movement. This eccentric movement of the circulating element 16 takes place compared to a stationary element 18 of the
  • the stationary element 18 has an end plate 20 which represents the outer end of the electrically driven compressor 4.
  • Spiral walls 24 protrude laterally from a base plate 22 of the stationary spiral element 18, all of which are surrounded by an approximately cylindrical housing 26.
  • the circulating element 16 arranged on the eccentric 14 likewise has an end plate 28 with (circumferential) spiral walls 30 projecting therefrom.
  • the spiral walls 24 of the stationary spiral element 18 and the spiral walls 30 of the circumferential spiral element 16 interlock so that they form working chambers 32 of variable size between them.
  • the circumferential spiral element 16 is provided on its outside (end plate 28) with an axial bearing (ball bearing) 38.
  • This axial bearing 38 which is supported on the housing 26 of the scroll compressor 4, is connected via the end plate 28 of the rotating element 16 to a pin located on the crankshaft 10.
  • the crank part (eccentric) 14 has an eccentricity with respect to the axis 42.
  • the crankshaft 10 of the reluctance motor 6 encompassing the spiral compressor 4 is supported in a stationary bearing (A) 44.
  • a bearing (B) 46 supports the rotor of the reluctance motor 6.
  • the scroll compressor 4 is completely accommodated in the reluctance motor 6, which drives the crankshaft 10.
  • the bearing plate 12 On the side opposite the spiral compressor 4 is the bearing plate 12, which is also the end plate of the rotor 50 of the electric drive motor 6. This end plate 12 is on the cylindrical Fixed rotor carrier 52 which coaxially surrounds the compressor 4.
  • the R ⁇ t ⁇ ritati 52 carries at least one R ⁇ t ⁇ rvers 54 made of laminated soft iron.
  • At least one stator laminated core 56 which is fastened to the inside of the housing 8, stands coaxially opposite this rotor core 54.
  • the stator laminated core 56 is surrounded by windings 58, against which it is protected by a stator cover 60.
  • the windings 58 are supplied with electrical energy via a cable connection 62.
  • Fig. 1 on a scale of 1: 1 with reluctance motor 6 generates a cooling capacity of 5.5 kW at a maximum speed of 4,000 rpm.
  • the maximum torque is between 8.5 and 12 Nm.
  • the volume of the working chamber 32 of the scroll compressor 4 is a maximum of 70 cm 3 .
  • the maximum pressure is 20 bar.
  • the compressor 2 shown in FIG. 2 has a permanently magnetically excited motor (synchronous motor) 64 as the drive motor instead of the reluctance motor 6.
  • the unit 2 shown in FIG. 2 has a comparable structure: here too, the compressor 4 and drive motor 64 are located in a common, approximately cylindrical housing 8. And here, too, is the motor 64 arranged in a ring around the compressor 4, the motor 64 driving the Umlau element 16 of the compressor 4.
  • Compressors 4 are largely identical to the structure and mode of operation of the compressor 4 described with reference to FIG. 1. However, this compressor 4 is not accommodated in a reluctance ⁇ tor 6 but in a permanent magnet motor 64 (synchronous motor).
  • the Rot ⁇ rglocke 70 carries a laminated rotor core 72 made of laminated soft iron. Attached to it again is at least one permanent magnet 74, which consists of a rare earth chemical element or a mixture thereof.
  • the rotor 68 consisting of end plate 66, rotor bell 70, rotor plate assembly 72 and permanent magnet 74 is designed as an external rotor.
  • the stator 76 of the drive motor 64 is located between this rotor 68, which is designed as an external rotor, and the compressor 4. Inside, the permanent magnet 74 is coaxially opposed to a stator laminated core 78. This stator laminated core 78 is attached to the housing 8 of the compressor 2.
  • the stator laminated core 78 is surrounded by windings 80, against which it is laterally covered by a stator cover 82 is protected.
  • the windings 80 are supplied with electrical energy via the cable connection 62.
  • the embodiment of the electrically driven compressor 2 shown in FIG. 2 is shown on a scale of 1: 1.
  • the spiral compressor 4 generates a maximum cooling capacity of 7 kW at a maximum speed of 6,000 rpm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The compressor (4) and the drive motor (6) of an electric compressor (2) are coaxially installed on the same shaft and fit in the same housing (8). The new embodiment must be designed particularly compact. To reach that aim, the drive motor (6) is ring-shaped and mounted around the compressor (6), as a result of which the construction is not very long in the axial direction, the length of the electric compressor being determined by that of the drive motor (6). The compressor (6) is designed preferably according to the principle of the helical or rotary piston. The invention suggests as drive motor a reluctance motor (6), a full-time energized synchronous motor (64) and an asynchonous motor. This type of compressor is intended for use particularly in refrigerating or air conditioning facilities.

Description

Elektrisch angetriebener VerdichterElectrically driven compressor
Die Erfindung betrifft einen elektrisch angetriebenen Verdichter der im Oberbegriff des Anspruchs 1 genannten Art.The invention relates to an electrically driven compressor of the type mentioned in the preamble of claim 1.
Solche Verdichter, insbesondere vom Spiraltyp, die vorwiegend in Kälte- und Klimaanlagen zum Einsatz gelangen, sind aus zahlreichen Druckschriften bekannt.Such compressors, in particular of the spiral type, which are mainly used in refrigeration and air conditioning systems, are known from numerous publications.
Als Beispiel seien hier die PatentschriftenThe patent specifications are an example here
DE-PS 32 34.386, DE-PS 32 38 327, DE-PS 33 19 776, DE-PS 33 45 073, DE-PS 33 45 074 und DE-PS 33 45 684 genann .DE-PS 32 34.386, DE-PS 32 38 327, DE-PS 33 19 776, DE-PS 33 45 073, DE-PS 33 45 074 and DE-PS 33 45 684 called.
Alle genannten elektrisch angetriebenen Verdichter bestehen jeweils aus einem Spiral erdichter und einem Elektromotor, die über eine gemeinsame Welle miteinander in Wirkverbindung stehen. SpiralVerdichter und Elektromotor befinden sich in einem gemeinsamen Gehäuse. Da Verdichter und Hotor jeweils hintereinander (übereinander) angeordnet sind, ergibt sich eine relativ große Bauhöhe. Aus diesem Grunde sind die genannten Aggregate kaum für den Einbau in Kraftfahrzeugen geeignet.All of the above-mentioned electrically driven compressors each consist of a spiral compass and an electric motor, which are operatively connected to one another via a common shaft. Spiral compressor and electric motor are in a common housing. Since the compressor and the hotor are arranged one behind the other (one above the other), the overall height is relatively large. For this reason, the units mentioned are hardly suitable for installation in motor vehicles.
Der Erfindung, die im wesentlichen mit dem Anspruch 1 gelöst ist, liegt die Aufgabe zugrunde, einen möglichst kleinbauenden, elektrisch angetriebenen Verdichter, insbesondere für die Verwendung in Kühl- bzw. Klimaanlagen von Kraftfahrzeugen, zu schaffen.The object of the invention, which is essentially solved with claim 1, is to provide an electrically driven compressor that is as small as possible, especially for use in cooling and air conditioning systems of motor vehicles.
Ein Verdichter für ein Klimagerät in einem Kraftfahrzeug erfordert - unabhängig vom Verdichterprinzip - ca 2 - 5 kW Antriebsleistung bei einer maximalen Kühlleistung von ca 4 - 7 kW. Dieser Kühlleistungsbereich wird von den erfindungsgemäßen Konstruktionen problemlos abgedeckt. Da der Verdichter im Rotor bzw. im Stator des Elektromotors aufgenommen wird, ist das gesamte Aggregat besonders kleinbauend. Deshalb läßt sich der mit dem erfindungsgemäß ausgestalteten Antriebsmotor versehene Verdichter vorteilhaft in Hybridantrieben von Kraftfahrzeugen integrieren. Wegen der vergleichbar geringen Bauhöhe ist zudem auch eine Gewichtseinsparung gegeben. Eine Regelung kann direkt dem elektrischen Antriebsmotor des Verdichters zugeordnet werden. Da kein Start/Stop-Betrieb erforderlich ist, ergeben sich keine Schaltstöße. Somit ist insgesamt eine Geräuschreduzierung und - da keine Stillstandsverluste - ein besserer Wirkungsgrad gegeben.A compressor for an air conditioner in a motor vehicle requires - regardless of the compressor principle - approx. 2 - 5 kW drive power with a maximum cooling capacity of approx. 4 - 7 kW. This cooling capacity range is easily covered by the constructions according to the invention. Since the compressor is accommodated in the rotor or stator of the electric motor, the entire unit is particularly small. Therefore, the compressor provided with the drive motor configured according to the invention can advantageously be integrated in hybrid drives of motor vehicles. Because of the comparatively low overall height, there is also a weight saving. A control can be assigned directly to the electric drive motor of the compressor. Since no start / stop operation is required, there are no switching surges. This results in overall noise reduction and - since there are no downtime losses - better efficiency.
Da der erfindungsgemäße Verdichter so geringe Abmessungen aufweist, läßt er sich überall direkt dort einbauen, wo er benötigt wird. Lange und damit aufwendige Kühlleitungen können deshalb entfallen. Das spart Mαntagezeit.Since the compressor according to the invention has such small dimensions, it can be installed directly wherever it is needed. Long and thus complex cooling lines can therefore be omitted. This saves onage time.
Die in den Unteransprüchen beschriebenen bevorzugten Ausführungsformen betreffen einerseits den Verdichter und andererseits den elektrischen Antriebsmotor.The preferred embodiments described in the subclaims relate on the one hand to the compressor and on the other hand to the electric drive motor.
Neben einem nach dem Krei kolbenprinzip arbeitenden Verdichter hat sich ein Verdichter vom Spiraltyp als besonders geeignet erwiesen, da er bei allen durchfahrenen Drehzahlen einen hohen Wirkungsgrad aufweist. Der als Antriebsmotor vorgeschlagene Reluktanz otor ist besonders preiswert: Für den Läufer (Rotor) ist keine separate Wicklung erforderlich.In addition to a compressor operating according to the circular piston principle, a compressor of the spiral type has proven to be particularly suitable, since it has a high degree of efficiency at all speeds that are driven through. The reluctance motor proposed as the drive motor is particularly inexpensive: no separate winding is required for the rotor.
Der mit Permanentmagnet <en) betriebene Motor (Synchron-The motor operated with permanent magnet (s) (synchronous
Hαtor) ist als Außenläufer ausgebildet. Er weist ein hohes Anzugsmoment und insgesamt einen überdurchschnittlichen Wirkungsgrad auf.Hαtor) is designed as an external rotor. It has a high tightening torque and overall an above-average efficiency.
Wegen der Vielzahl der verschiedenen Antriebsmotoren ist der erfindungsgemäße Verdichter für praktisch jeden Anwendungsfall geeignet.Because of the large number of different drive motors, the compressor according to the invention is suitable for practically every application.
Die Erfindung wird anhand zweier Ausführungsbeispiele näher erläutert.The invention is explained in more detail using two exemplary embodiments.
Fig. 1 zeigt im Längsschnitt einen von einem Reluktanzmotor angetriebenen SpiralVerdichter.Fig. 1 shows in longitudinal section a scroll compressor driven by a reluctance motor.
Fig. 2 zeigt ebenfalls einen Längsschnitt durch einen elektrisch. angetriebenen Spiral erdichter; der Elektromotor ist hierbei. permanenterregt .Fig. 2 also shows a longitudinal section through an electrical. powered spiral denser; the electric motor is here. permanently excited.
Bei dem in Fig. 1 im Längsschnitt dargestellten elektrisch angetriebenen Verdichter 2 befinden sich ein Spiral erdichter 4 und ein Reluktanzmotor 6 in einem gemeinsamen zylindrischen Gehäuse 8. Dabei ist der Motor 6 ringförmig um den Verdichter 4 herum angeordnet. Dieser Motor 6 hat eine Welle 10, die mit einer Lagerplatte 12 drehbar gegenüber dem Gehäuse 8 gelagert ist.In the electrically driven compressor 2 shown in longitudinal section in FIG. 1, a spiral compressor 4 and a reluctance motor 6 are located in a common cylindrical housing 8. The motor 6 is arranged in a ring around the compressor 4. This motor 6 has a shaft 10 which is rotatably mounted with a bearing plate 12 relative to the housing 8.
Mit Hilfe eines Exzenters 14 treibt die Welle 10 des Motors 6 ein Umlaufelement 16 des Spiral Verdichters 4 an. Hierbei führt das Umlaufelement 16 eine exzentrische Bewegung aus. Diese exzentrische Bewegung des Umlaufelements 16 erfolgt gegenüber einem stationären Element 18 desWith the help of an eccentric 14, the shaft 10 of the motor 6 drives a circulating element 16 of the scroll compressor 4. Here, the rotating element 16 executes an eccentric movement. This eccentric movement of the circulating element 16 takes place compared to a stationary element 18 of the
Spiral erdichters 4. Das stationäre Element 18 weist eine Stirnplatte 20 auf, die den äußeren stirnseitigen Abschluß des elektrisch angetriebenen Verdichters 4 darstellt. Von einer Grundplatte 22 des stationären Spiralelements 18 stehen seitlich Spiralwände 24 ab, die insgesamt von einem in etwa zylindrischen Gehäuse 26 umgeben sind. Das an dem Exzenter 14 angeordnete Umlaufelement 16 weist ebenfalls eine Stirnplatte 28 mit davon abstehenden (umlaufenden) Spiralwänden 30 auf. Die Spiral wände 24 des stationären Spiralelements 18 und die Spiralwände 30 des umlaufenden Spiralelements 16 greifen so ineinander, daß sie zwischen sich Arbeitskammern 32 veränderlicher Größe bilden.Spiral erdichters 4. The stationary element 18 has an end plate 20 which represents the outer end of the electrically driven compressor 4. Spiral walls 24 protrude laterally from a base plate 22 of the stationary spiral element 18, all of which are surrounded by an approximately cylindrical housing 26. The circulating element 16 arranged on the eccentric 14 likewise has an end plate 28 with (circumferential) spiral walls 30 projecting therefrom. The spiral walls 24 of the stationary spiral element 18 and the spiral walls 30 of the circumferential spiral element 16 interlock so that they form working chambers 32 of variable size between them.
Das umlaufende Spiralelement 16 ist an seiner Außenseite (Stirnplatte 28) mit einem Axiallager (Kugellager) 38 versehen. Dieses Axial lager 38, das sich am Gehäuse 26 des SpiralVerdichters 4 abstützt, steht über die Stirnplatte 28 des Umlaufelements 16 mit einem an der Kurbelwelle 10 befindlichen Zapfen in Verbindung. Der Kurbelteil (Exzenter) 14 weist gegenüber der Achse 42 eine Exzentrizität auf. Die Kurbelwelle 10 des den SpiralVerdichter 4 umgreifenden Reluktanzmotors 6 ist in einem ortsfest angebrachten Lager (A) 44 abgestützt. Ein Lager (B) 46 stützt den Rotor des Reluktanzmotors 6 ab.The circumferential spiral element 16 is provided on its outside (end plate 28) with an axial bearing (ball bearing) 38. This axial bearing 38, which is supported on the housing 26 of the scroll compressor 4, is connected via the end plate 28 of the rotating element 16 to a pin located on the crankshaft 10. The crank part (eccentric) 14 has an eccentricity with respect to the axis 42. The crankshaft 10 of the reluctance motor 6 encompassing the spiral compressor 4 is supported in a stationary bearing (A) 44. A bearing (B) 46 supports the rotor of the reluctance motor 6.
Der Spiral Verdichter 4 ist vollständig in dem Reluktanzmotor 6, der die Kurbelwelle 10 antreibt, aufgenommen.The scroll compressor 4 is completely accommodated in the reluctance motor 6, which drives the crankshaft 10.
Auf der dem SpiralVerdichter 4 gegenüberliegenden Seite befindet sich die Lagerplatte 12, die gleichzeitig Stirnplatte des Rotors 50 des elektrischen Antriebsmotors 6 ist. Diese Stirnplatte 12 ist an dem zylinderförmigen Rotorträger 52 befestigt, der den Verdichter 4 koaxial umgibt. Der Rαtαrträger 52 trägt mindestens ein Rαtσrpaket 54 aus lamelliertem Weicheisen. Diesem Rotorpaket 54 koaxial gegenüber steht mindestens ein Statorblechpaket 56, welches an der Innenseite des Gehäuses 8 befestigt ist. Das Statorblechpaket 56 ist von Wicklungen 58 umgeben, gegen die es durch eine Statorabdeckung 60 geschützt ist. Die Wicklungen 58 werden über einen Kabelanschluß 62 mit elektrischer Energie versorgt.On the side opposite the spiral compressor 4 is the bearing plate 12, which is also the end plate of the rotor 50 of the electric drive motor 6. This end plate 12 is on the cylindrical Fixed rotor carrier 52 which coaxially surrounds the compressor 4. The Rαtαrträger 52 carries at least one Rαtσrpaket 54 made of laminated soft iron. At least one stator laminated core 56, which is fastened to the inside of the housing 8, stands coaxially opposite this rotor core 54. The stator laminated core 56 is surrounded by windings 58, against which it is protected by a stator cover 60. The windings 58 are supplied with electrical energy via a cable connection 62.
Wenn die Kurbelwelle 10 rotiert, läuft das über den Exzenter 14 angetriebene Spiralelement 16 um. Dabei wird das durch einen Ansaugstutzen 34 angesaugte Fluid in dem Raum (Arbeitskamer 32) zwischen dem umlaufenden 16 und dem feststehenden Spiralelement 18 verdichtet und über einen Ausgangsstutzen 36 und ein sich daran anschließendes Auslaßrohr dem Kühlkreislauf zugeführt. Die durch die Verdichtung erzeugte Belastung wird von den Lagern 38, 44, 46 aufgefangen.When the crankshaft 10 rotates, the spiral element 16 driven by the eccentric 14 rotates. The fluid sucked in through an intake port 34 is compressed in the space (working chamber 32) between the rotating 16 and the fixed spiral element 18 and supplied to the cooling circuit via an outlet port 36 and a connecting outlet pipe. The load generated by the compression is absorbed by the bearings 38, 44, 46.
Die in Fig. 1 im Maßstab 1 : 1 abgebildete Ausführungsform mit Reluktanzmotor 6 erzeugt eine Kälteleistung von 5,5 kW bei einer maximalen Drehzahl von 4.000 U/min. Das maximale Drehmoment liegt zwischen 8,5 und 12 Nm. Das Volumen der Arbeitskammer 32 des SpiralVerdichters 4 beträgt maximal 70 cm3. Der maximale Druck beträgt 20 bar.The embodiment shown in Fig. 1 on a scale of 1: 1 with reluctance motor 6 generates a cooling capacity of 5.5 kW at a maximum speed of 4,000 rpm. The maximum torque is between 8.5 and 12 Nm. The volume of the working chamber 32 of the scroll compressor 4 is a maximum of 70 cm 3 . The maximum pressure is 20 bar.
Der in Fig. 2 dargestellte Verdichter 2 weist als Antriebsmotor anstelle des Reluktanzmotors 6 einen permanentmagnetisch erregten Motor (Synchron-Motor) 64 auf. Darüberhinaus hat das in Fig. 2 dargestellte Aggregat 2 einen vergleichbaren Aufbau: Auch hier befinden sich Verdichter 4 und Antriebsmotαr 64 in einem gemeinsamen, in etwa zylindrischen Gehäuse 8. Und auch hier ist der Motor 64 ringförmig um den Verdichter 4 herum angeordnet, wobei der Motor 64 das Umlau element 16 des Verdichters 4 antreibt.The compressor 2 shown in FIG. 2 has a permanently magnetically excited motor (synchronous motor) 64 as the drive motor instead of the reluctance motor 6. In addition, the unit 2 shown in FIG. 2 has a comparable structure: here too, the compressor 4 and drive motor 64 are located in a common, approximately cylindrical housing 8. And here, too, is the motor 64 arranged in a ring around the compressor 4, the motor 64 driving the Umlau element 16 of the compressor 4.
Aufbau und Wirkungsweise des in Fig. 2 dargestelltenStructure and operation of the shown in Fig. 2
Verdichters 4 sind weitgehend identisch mit Aufbau und Wirkungsweise des anhand der Fig. 1 beschriebenen Verdichters 4. Dieser Verdichter 4 ist aber nicht in einem Reluktanz σtor 6 sondern in einem permanentmagnetisch betriebenen Motor (Synchron-Motor) 64 aufgenommen.Compressors 4 are largely identical to the structure and mode of operation of the compressor 4 described with reference to FIG. 1. However, this compressor 4 is not accommodated in a reluctance σtor 6 but in a permanent magnet motor 64 (synchronous motor).
Auf der dem SpiralVerdichter 4 gegenüberliegenden Seite befindet sich auch hier eine Stirnplatte 66 des Rotors 68 des permanentmagnetischen Antriebsmotors 64. Diese Stirnplatte 66 ist an einer Rotorglocke 70 befestigt, die in dieser Ausführungsform den Verdichter 4 koaxial umgibt. Die Rotσrglocke 70 trägt ein Rotorblechpaket 72 aus lamelliertem Weicheisen. Wiederum daran befestigt ist mindestens ein Permanentmagnet 74, der aus einem chemischen Element der seltenen Erden oder einer Mischung daraus besteht. Der aus Stirnplatte 66, Rotorglocke 70, Rotαrblechpaket 72 und Permane tmagnet 74 bestehende Rotor 68 ist als Außenläufer ausgebildet.On the side opposite the spiral compressor 4 there is also an end plate 66 of the rotor 68 of the permanent magnetic drive motor 64. This end plate 66 is fastened to a rotor bell 70 which in this embodiment coaxially surrounds the compressor 4. The Rotσrglocke 70 carries a laminated rotor core 72 made of laminated soft iron. Attached to it again is at least one permanent magnet 74, which consists of a rare earth chemical element or a mixture thereof. The rotor 68 consisting of end plate 66, rotor bell 70, rotor plate assembly 72 and permanent magnet 74 is designed as an external rotor.
Zwischen diesem als Außenläufer ausgebildeten Rotor 68 und dem Verdichter 4 befindet sich der Stator 76 des Antriebsmotors 64. Innen steht dem Permanentmagneten 74 ein Statorblechpaket 78 koaxial gegenüber. Dieses Statorblechpaket 78 ist am Gehäuse 8 des Verdichters 2 befestigt.The stator 76 of the drive motor 64 is located between this rotor 68, which is designed as an external rotor, and the compressor 4. Inside, the permanent magnet 74 is coaxially opposed to a stator laminated core 78. This stator laminated core 78 is attached to the housing 8 of the compressor 2.
Das Statorblechpaket 78 ist von Wicklungen 80 umgeben, gegen die es seitlich durch eine Statorabdeckung 82 geschützt ist. Die Wicklungen 80 werden über den Kabelanschluß 62 mit elektrischer Energie versorgt.The stator laminated core 78 is surrounded by windings 80, against which it is laterally covered by a stator cover 82 is protected. The windings 80 are supplied with electrical energy via the cable connection 62.
Die in Fig. 2 dargestellte Ausführungsform des elektrisch angetriebenen Verdichters 2 ist im Maßstab 1 : 1 abgebildet. Der SpiralVerdichter 4 erzeugt eine maximale Kälteleistung von 7 kW bei einer maximalen Drehzahl von 6.000 U/min. The embodiment of the electrically driven compressor 2 shown in FIG. 2 is shown on a scale of 1: 1. The spiral compressor 4 generates a maximum cooling capacity of 7 kW at a maximum speed of 6,000 rpm.
Elektrisch, angetriebener Verdichter BezugszeichenlisteElectric, driven compressor list of reference symbols
Flg. 1 und 2:Flg. 1 and 2:
2 elektrisch. angetriebener Verdichter2 electric. driven compressor
4 Spiralverdichter, Verdichter4 scroll compressors, compressors
6 (Reluktanz- ) Motor , Antriebsmotor6 (reluctance) motor, drive motor
8 Gehäuse (des elektrisch angetriebenen Verdichters) 8 housing (of the electrically driven compressor )
10 Welle10 wave
12 Lagerplatte, Stirnplatte des Rotors12 bearing plate, end plate of the rotor
14 Exzenter14 eccentrics
16 Umlaufelement des Spiralverdichters16 circulation element of the scroll compressor
18 stationäres Element des Spiral erdichters18 stationary element of the spiral sealer
20 Grundplatte des stationären Elements20 base plate of the stationary element
22 Stirnplatte des stationären Elements22 end plate of the stationary element
24 Spiralwände des stationären Elements24 spiral walls of the stationary element
26 Gehäuse des Spiral erdichters26 casing of the spiral sealer
.28 Stirnplatte des Umlau elements.28 Front plate of the Umlau element
30 Spiralwände . (des Umlaufelements)30 spiral walls. (of the circulation element)
32 Arbeitskammer32 Chamber of Labor
34 Ansaugstutzen34 intake manifold
36 Ausgangsstutzen36 outlet connection
38 Axiallager (Kugellager)38 thrust bearings (ball bearings)
42 Achse der Kurbelwelle42 axis of the crankshaft
44 Lager (A)44 bearings (A)
46 Lager (B)46 bearings (B)
50 Rotor50 rotor
52 Rotαrträger52 red carriers
54 Rαtorpaket54 Rαtorpaket
56 Statαrblechpaket56 stator sheet package
58 Wicklungen58 windings
60 Statorabdeckung60 stator cover
62 Kabelanschluß Fig, 2:62 Cable connection Fig. 2:
64 Permanentmagnet-Motor (Synchron-Motor)64 permanent magnet motor (synchronous motor)
66 Stirnplatte66 end plate
68 Rotor68 rotor
70 Rotorglocke70 rotor bell
72 Rotorblechpaket72 rotor laminated core
74 Permanentmagnet74 permanent magnet
76 Stator76 stator
78 Statorblechpaket78 stator laminated core
80 Wicklungen80 windings
82 Statorabdeckung 82 stator cover

Claims

Paten nsprüche Godparent claims
1. Elektrisch angetriebener Verdichter (Kompressor) (2), wobei ein Verdichter (4) und ein elektrischer Antriebsmotor (6) koaxial zueinander auf einer gemeinsamen Welle (10) angeordnet und in einem gemeinsamen Gehäuse (8) untergebracht sind, d a d u r c h g e k e n n z e i c h n e t, daß der elektrische Antriebsmotor (6) ringförmig ausgebildet und um den Verdichter (4) herum angeordnet ist, wobei der Verdichter (4) im Antriebsmotor (6) aufgenommen ist, so daß sich insgesamt eine axial kurze Baulänge ergibt, und wobei die Breite des elektrisch angetriebenen Verdichters (2) von der Breite des Antriebsmotors (6) bestimmt wird.1. Electrically driven compressor (compressor) (2), a compressor (4) and an electric drive motor (6 ) arranged coaxially to one another on a common shaft (10) and housed in a common housing (8), characterized in that electric drive motor (6) is ring-shaped and is arranged around the compressor (4), the compressor (4) being accommodated in the drive motor (6), so that overall there is an axially short overall length, and the width of the electrically driven compressor (2) is determined by the width of the drive motor (6).
2. Verdichter nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß der Verdichter (4) vom Spiraltyp ist.2. Compressor according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the compressor (4) is of the spiral type.
3. Verdichter nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß der Verdichter (4) nach dem Kreiskolbenprinzip funktioniert.3. A compressor according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the compressor (4) works on the rotary piston principle.
4. Verdichter nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß der Antriebsmotor (6) mindestens einen Permanentmagneten (74) aufweist. 4. Compressor according to one of the preceding claims, characterized in that the drive motor (6) has at least one permanent magnet (74).
5. Verdichter nach einem der Ansprüche 1 - 3, d a d u r c h g e k e n n z e i c h n e t, daß der Antriebsmotor (6) ein Reluktanzmαtor ist.5. Compressor according to one of claims 1-3, d a d u r c h g e k e n n z e i c h n e t that the drive motor (6) is a reluctance motor.
6. Verdichter nach einem der Ansprüche 1 - 3, d a d u r c h g e k e n n z e i c h n e t, daß der Antriebsmotor (6) ein Asynchronmotor ist. 6. Compressor according to one of claims 1-3, d a d u r c h g e k e n n z e i c h n e t that the drive motor (6) is an asynchronous motor.
PCT/EP1998/004710 1997-08-25 1998-07-28 Electric compressor WO1999010654A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19736907.3 1997-08-25
DE1997136907 DE19736907A1 (en) 1997-08-25 1997-08-25 Electrically driven compressor

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DE102015214789A1 (en) 2015-08-03 2016-07-28 Magna Powertrain Bad Homburg GmbH Electric compressor and method of making an electric compressor
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DE102015214787B3 (en) * 2015-08-03 2016-08-11 Magna Powertrain Bad Homburg GmbH Electric compressor
DE102015214788A1 (en) 2015-08-03 2017-02-09 Magna Powertrain Bad Homburg GmbH Electric compressor and method of making an electric compressor
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DE102015214789A1 (en) 2015-08-03 2016-07-28 Magna Powertrain Bad Homburg GmbH Electric compressor and method of making an electric compressor
DE102015214785B3 (en) * 2015-08-03 2016-08-04 Magna powertrain gmbh & co kg Electric compressor
DE102015214787B3 (en) * 2015-08-03 2016-08-11 Magna Powertrain Bad Homburg GmbH Electric compressor
DE102015214788A1 (en) 2015-08-03 2017-02-09 Magna Powertrain Bad Homburg GmbH Electric compressor and method of making an electric compressor
DE102016209304A1 (en) 2015-08-03 2017-02-09 Magna Powertrain Bad Homburg GmbH Electric compressor and method of making an electric compressor
WO2017021053A1 (en) 2015-08-03 2017-02-09 Magna Powertrain Bad Homburg GmbH Electric compressor
US10378555B2 (en) 2015-08-03 2019-08-13 Magna Powertrain Bad Homburg GmbH Electric compressor for use in a motor vehicle having a housing with an inner circumferential recess closed by a control unit to form a cooling duct
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