EP0612096B1 - Antriebsvorrichtung für eine Drehanode - Google Patents
Antriebsvorrichtung für eine Drehanode Download PDFInfo
- Publication number
- EP0612096B1 EP0612096B1 EP94200323A EP94200323A EP0612096B1 EP 0612096 B1 EP0612096 B1 EP 0612096B1 EP 94200323 A EP94200323 A EP 94200323A EP 94200323 A EP94200323 A EP 94200323A EP 0612096 B1 EP0612096 B1 EP 0612096B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- stator
- driving device
- potential
- cylinder
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910000669 Chrome steel Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 238000003475 lamination Methods 0.000 claims 2
- 239000012809 cooling fluid Substances 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 238000002955 isolation Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/66—Circuit arrangements for X-ray tubes with target movable relatively to the anode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
- H01J35/101—Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving
- H01J35/1017—Bearings for rotating anodes
- H01J35/1024—Rolling bearings
Definitions
- the invention relates to a drive device for the rotating anode X-ray tube with a drive motor with stator and rotor on it Anode potential are operated and are separated by a gap, whereby the rotor shaft drives the rotating anode and the motor is powered by a potential-isolating transmission device.
- the rotor of the Drive motor is designed as an external rotor and that the rotor a first, the Gap facing concentric cylinder made of copper or aluminum, and that the rotor encloses a second cylinder enclosing the first cylinder concentric cylinder made of iron.
- a significant reduction in the volume of the engine can be achieved be that the rotor is realized as an external rotor. Because the torque of the Motor is essentially determined by the bore area, that is Total volume of the engine at the desired torque specified by the Engine parts located outside the bore area determined. An outside of the The stator bore area is now much larger than an outside one the rotor surface.
- the outer rotor also has the advantage of a higher one Mass moment of inertia compared to an inner rotor, so that at Malfunctions in the electronics that feed the motor, e.g. by high electromagnetic fields, as are typical in X-ray tubes, smaller Speed fluctuations will occur. So you can then on a Speed control can be dispensed with or these can be carried out more simply.
- the electromagnetic field of the Motors better shielded from the electron and x-ray than at an external stator. This is especially the case if
- the rotor length is greater than that The laminated core length of the stator is, but less than the total length of the stator.
- the Stator interior is pierced to introduce coolant, for example Oil, to allow.
- coolant for example Oil
- a rotating anode drive can be implemented, which has a power factor of 0.4 to 0.5 and an efficiency of 40% to Owns 60%. This leads to significant cost reductions in the power supply of the Motors and in the cooling device of the X-ray tube.
- the supply of the drive motor via a Isolating transformer arrangement or via a isolated DC / DC converter is the drive of the drive motor guaranteed.
- Isolation using a Isolating transformer arrangement or a potential isolating DC / DC converter is the drive of the drive motor guaranteed.
- isolating transformer and DC / DC converter volumes are provided. Due to the spatial separation of engine and Isolation becomes a lower total volume achieved and can this total volume more skillfully in the entire device.
- the rotor from the stator by means of a non-magnetic separation layer is vacuum-separated, which at the same time supports the stator laminated core, the Separating layer, for example made of nickel-chrome steel, Ceramic or glass is made.
- Fig. 1 shows part of an X-ray tube with one Tube part 1, an insulator 2 and a vacuum chamber 3.
- the rotor 5b of the drive motor 5 Die Separation from the vacuum chamber 3 is in the gap of the motor 5 realized by the separating layer 4, which e.g. out CrNi steel, ceramic or glass can exist.
- This Separating layer 4 also serves to accommodate the stationary stator core 5d.
- the stator winding 5c is inserted.
- Stator winding 5c and stator core 5d form the Stator 5a of the drive motor 5.
- the rotor 5b consists of two different materials, a copper cylinder 5e and an iron cylinder 5f surrounding this.
- the Drive motor 5 drives the rotating anode 7 via a shaft 6 on.
- the bearing 7a of the shaft 6 is a ball bearing trained, but can also be a sliding or a Spiral groove bearing.
- the motor is powered via potential-isolating Transmission devices according to Fig. 2 or 3.
- Die potential-isolating transmission device according to FIG. 2 consists of a on network terminals 10a and 10b connected rectifier 11, one yourself subsequent inverter 12 and one Isolating transformer device 13 with the Isolation transformer coils 13a and 13b.
- Die potential-isolating transmission device according to FIG. 2 consists of a on network terminals 10a and 10b connected rectifier 11, one yourself subsequent inverter 12 and one Isolating transformer device 13 with the Isolation transformer coils 13a and 13b.
- Through a frame 14 indicates that the coil 13b and the motor 5 located in the high voltage area of the X-ray tube.
- the AC part of the inverter and the Coils 13a and 13b and the motor 5 are three-phase educated.
- Fig. 3 shows another variant of the Transmission device.
- Terminals 10a and 10b apply an AC voltage to the Rectifier 11 given the supplied Converts AC to DC and one DC / DC converter 15 feeds.
- the DC / DC converter 15 has one Inverter part 15a, a rectifier part 15b and an isolating transformer part 15c. Of the Isolation transformer part 15c has two coils 15d and 15e.
- the rectifier part 15b supplies a DC voltage to an inverter 12, which is fed to it DC voltage in a three-phase AC voltage system converts and delivers to the engine 5.
- the high voltage range, outlined by the Line 14, the coil 15e and the rectifier part 15b of the DC / DC converter 15, inverter 12 and motor 5 includes.
Landscapes
- X-Ray Techniques (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
Claims (7)
- Antriebsvorrichtung für eine Drehanode einer Röntgenröhre, mit einem Antriebsmotor (5) mit Stator (5a) und Rotor (5b), die auf Anodenpotential betrieben werden und durch einen Spalt getrennt sind, wobei die Rotorwelle (6) die Drehanode (7) antreibt und wobei die Speisung des Motors (5) mittels einer potentialtrennenden Übertragungsvorrichtung erfolgt, dadurch gekennzeichnet, daß der Rotor (5b) des Antriebsmotors (5) als Außenläufer ausgebildet ist und daß der Rotor einen ersten (5e), dem Spalt zugewandten konzentrischen Zylinder aus Kupfer oder Aluminium aufweist, und daß der Rotor (5b) einen zweiten (5f), den ersten Zylinder (5e) umschließenden konzentrischen Zylinder aus Eisen aufweist.
- Antriebsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Rotorlänge gleich oder größer als die Blechpaketlänge des Stators, aber kleiner als die Gesamtlänge des Stators ist.
- Antriebsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Statorinnenraum durchbohrt ist, um das Einleiten von Kühlflüssigkeit zu ermöglichen.
- Antriebsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Rotor als Käfigläufer ausgebildet ist.
- Antriebsvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Rotor vom Stator mittels einer unmagnetischen Trennschicht vakuummäßig getrennt ist, die zugleich das Statorblechpaket abstützt.
- Antriebsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Trennschicht aus Nickel-Chrom-Stahl, Keramik oder Glas besteht.
- Antriebsvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die potentialtrennende Übertragungseinrichtung aus dem Einphasen-Netz, aus dem Dreiphasen-Netz oder aus der in einer Röntgenröhre vorhandenen Gleichspannung gespeist wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4304760A DE4304760A1 (de) | 1993-02-17 | 1993-02-17 | Antriebsvorrichtung für eine Drehanode |
| DE4304760 | 1993-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0612096A1 EP0612096A1 (de) | 1994-08-24 |
| EP0612096B1 true EP0612096B1 (de) | 1999-05-06 |
Family
ID=6480653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94200323A Expired - Lifetime EP0612096B1 (de) | 1993-02-17 | 1994-02-10 | Antriebsvorrichtung für eine Drehanode |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5490198A (de) |
| EP (1) | EP0612096B1 (de) |
| JP (1) | JP3696263B2 (de) |
| DE (2) | DE4304760A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19752114A1 (de) * | 1997-11-25 | 1999-05-27 | Philips Patentverwaltung | Antriebsvorrichtung für eine Röntgen-Drehanode sowie Verfahren zur Steuerung der Antriebsvorrichtung |
| US6212753B1 (en) * | 1997-11-25 | 2001-04-10 | General Electric Company | Complaint joint for interfacing dissimilar metals in X-ray tubes |
| US6281610B1 (en) * | 1999-06-29 | 2001-08-28 | General Electric Company | Slip ring brush assembly and method |
| US6198803B1 (en) | 1999-08-20 | 2001-03-06 | General Electric Company | Bearing assembly including rotating element and magnetic bearings |
| DE19945414C2 (de) * | 1999-09-22 | 2001-07-19 | Siemens Ag | Rotor für eine Drehanode einer Röntgenröhre |
| US6542577B1 (en) | 2000-08-18 | 2003-04-01 | Koninklijke Philips Electronics, N.V. | Hermetically sealed stator cord for x-ray tube applications |
| DE102009022916B4 (de) * | 2009-05-27 | 2011-05-19 | Dst Dauermagnet-System Technik Gmbh | Magnetkupplung sowie Spalttopf für eine Magnetkupplung |
| KR101105967B1 (ko) * | 2009-12-21 | 2012-01-17 | 엘지전자 주식회사 | 컴팩트형 압축기 |
| DE102012212133B3 (de) * | 2012-07-11 | 2013-07-25 | Siemens Aktiengesellschaft | Drehanodenanordnung und Röntgenröhre |
| CN107546089B (zh) * | 2016-08-04 | 2024-05-28 | 上海钧安医疗科技有限公司 | 一种大功率x射线球管 |
| DE102022117847A1 (de) * | 2022-07-18 | 2024-01-18 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Vorrichtung zum Kühlen einer elektrischen Antriebsmaschine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812997B2 (ja) * | 1975-06-20 | 1983-03-11 | 株式会社日立製作所 | X センソウチ |
| FR2399124A1 (fr) * | 1977-07-29 | 1979-02-23 | Radiologie Cie Gle | Tube a rayons x a anode tournante |
| DE2815893A1 (de) * | 1978-04-12 | 1979-10-18 | Siemens Ag | Roentgendiagnostikgenerator mit einem den hochspannungstransformator speisenden wechselrichter |
| DE3022618A1 (de) * | 1980-06-16 | 1982-01-21 | Siemens AG, 1000 Berlin und 8000 München | Drehanoden-roentgenroehre |
| US4504895A (en) * | 1982-11-03 | 1985-03-12 | General Electric Company | Regulated dc-dc converter using a resonating transformer |
| JPH0622106B2 (ja) * | 1985-03-29 | 1994-03-23 | 株式会社島津製作所 | 回転陽極x線管 |
| DE3918164A1 (de) * | 1989-06-03 | 1990-12-06 | Philips Patentverwaltung | Generator zum betreiben einer drehanoden-roentgenroehre |
| US5090048A (en) * | 1991-05-22 | 1992-02-18 | General Electric Company | Shielded enclosure with an isolation transformer |
-
1993
- 1993-02-17 DE DE4304760A patent/DE4304760A1/de not_active Withdrawn
-
1994
- 1994-02-10 DE DE59408190T patent/DE59408190D1/de not_active Expired - Fee Related
- 1994-02-10 EP EP94200323A patent/EP0612096B1/de not_active Expired - Lifetime
- 1994-02-14 JP JP01730894A patent/JP3696263B2/ja not_active Expired - Fee Related
-
1995
- 1995-04-17 US US08/425,305 patent/US5490198A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3696263B2 (ja) | 2005-09-14 |
| US5490198A (en) | 1996-02-06 |
| DE4304760A1 (de) | 1994-08-18 |
| DE59408190D1 (de) | 1999-06-10 |
| EP0612096A1 (de) | 1994-08-24 |
| JPH06251734A (ja) | 1994-09-09 |
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