KR100518087B1 - Electromotive gondola or ship drive system with cooling device - Google Patents
Electromotive gondola or ship drive system with cooling device Download PDFInfo
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- KR100518087B1 KR100518087B1 KR10-2000-7000534A KR20007000534A KR100518087B1 KR 100518087 B1 KR100518087 B1 KR 100518087B1 KR 20007000534 A KR20007000534 A KR 20007000534A KR 100518087 B1 KR100518087 B1 KR 100518087B1
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- ring
- support member
- cooler
- shaped channel
- stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
- B63H21/383—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling cooling-water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
- B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H2005/075—Arrangements on vessels of propulsion elements directly acting on water of propellers using non-azimuthing podded propulsor units, i.e. podded units without means for rotation about a vertical axis, e.g. rigidly connected to the hull
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
본 발명은 프로펠러 모터 형태로 된, 선박용 전동 구동 장치에 관한 것이며, 상기 장치에서 모터 냉각은 간단한 방법으로 개선된다. 벽(12)의 샤프트형 지지부재(7) 내부에 배치된 링형 채널(11)은 회로로 공급된 냉작재를 재순환시키는데 사용된다. 프로펠러 모터(4)는 상기 지지부재(7)에 의해 곤돌라 형태로 선박(1)의 바닥에 배치된다. The present invention relates to a marine electric drive, in the form of a propeller motor, in which the motor cooling is improved in a simple manner. The ring-shaped channel 11 disposed inside the shaft-like support member 7 of the wall 12 is used to recycle the cold material supplied to the circuit. The propeller motor 4 is arranged at the bottom of the ship 1 in the form of a gondola by the support member 7.
Description
본 발명은 고정자 및 회전자로 구성되는 전동 모터가 적어도 하나의 프로펠러를 직접 구동시키기 위해 샤프트형 지지부재에 의해 선체 바닥에서 유체저항을 적게 받도록 형성된 하우징에 곤돌라 형태로 배치되고 전동 모터의 일부분이 인공 냉각되도록 구성된, 선박 구동 장치, 특히 전동 구동 장치의 구조적 설계에 관한 것이다. The present invention is an electric motor consisting of a stator and a rotor is disposed in the form of gondola in a housing formed so as to receive less fluid resistance at the bottom of the hull by the shaft support member to directly drive the at least one propeller, and a part of the electric motor is artificial A structural design of a marine drive, in particular an electric drive, configured to be cooled.
공지된 상기 방식의 선박 구동 장치는 중공 샤프트에 고정되어 있는 단락 회전자를 가진 3상의 교류 전류 모터를 사용하며, 이때 중공 샤프트의 측면이 중공 샤프트 내에서 뻗은 구동 샤프트와 커플링되어 있다. 구동 샤프트의 측면은 프로펠러와 직접 커플링되어 있다. 이러한 선박 구동 장치에서 모터 고정자는 관형 프레임에 끼워져 있으며, 상기 프레임의 측면은 샤프트와 같은 지지부재를 통해 선체 바닥에 곤돌라 형태로 고정된 하우징에서, 파이프 행거 형태로 된 하우징부에 끼워져 있다. 회전자의 베어링을 포함한 모터 냉각은 물이 선체에 배치된 탱크로부터 곤돌라 형태로 배치된 하우징 내로 펌프작용에 의해 순환계로 제공됨으로써 이루어진다(미국특허 제 2,714,866호).The known ship drive system uses a three-phase alternating current motor with a short circuit rotor fixed to the hollow shaft, wherein the side of the hollow shaft is coupled with a drive shaft extending within the hollow shaft. The side of the drive shaft is directly coupled with the propeller. The motor stator in such a ship driving device is fitted in a tubular frame, the side of which is fitted in a housing in the form of a pipe hanger in a housing fixed in a gondola shape to the bottom of the hull via a support member such as a shaft. Motor cooling, including the bearings of the rotor, is achieved by providing water to the circulation system by pumping water from a tank arranged in the hull into a housing arranged in a gondola form (US Pat. No. 2,714,866).
10 MW이상의 동력으로 설비될 수 있는, 상기 방식과 다르게 공지된 선박 구동 장치에서 고정자를 가진 다이나모일렉트릭 모터(dynamoelectric motor)는 방사형으로 배치된 리브판(rib plate)에 의해 주변 하우징에 지지된다. 여기에 사용된 리브판은 동시에 선체로부터 공급되어 열교환기에 의해 재냉각된 기체 냉매(coolant)를 위한 냉각채널을 형성하는데 사용된다. 고가의 냉각기가 여기서는 샤프트형 지지부재에 배치된다. 통상적으로 분리 여기된 회전자를 가지며 교류 변환기가 제공된 동조 모터(synchronous motor)가 모터로 사용되며, 상기 회전자가 중공으로 형성된, 물이 관류하는 구동 샤프트에 배치됨으로써 다시 냉각될 수 있다(미국 특허 제 5,403,216호).In the known ship drive system, which can be equipped with power of 10 MW or more, a dynamoelectric motor with stators is supported in the peripheral housing by means of rib plates arranged radially. The rib plates used here are used to form cooling channels for gaseous coolant which are fed from the hull at the same time and recooled by a heat exchanger. Expensive coolers are disposed here on the shaft-like support members. A synchronous motor, typically having a discretely excited rotor and provided with an alternator, is used as the motor, which can be cooled again by being placed in a hollow, water-driven drive shaft (US patent) 5,403,216).
수력 전동 모터를 냉각시키기 위해 냉매로 사용되는 절연 오일이 펌프작용에 의해 순환계로 보내어져서 하우징벽 영역에서 축방향으로 이어지는 냉각채널에서 주변 물에 열을 내뿜는다는 사실이 미국 특허 제 2,862,122호에 공지되어 있다. It is known in US Pat. No. 2,862,122 that insulating oil, which is used as a refrigerant to cool a hydroelectric motor, is pumped into the circulation system to radiate heat to the surrounding water in a cooling channel running axially in the housing wall region. have.
프로펠러의 표면링과 결합되어 있는 열교환기가 선체에 배치된 구동모터의 냉각회로로 사용된다는 것이 영국 특허 제 2 260 805호에 추가로 공지되어 있다.It is further known in British Patent No. 2 260 805 that a heat exchanger combined with a surface ring of a propeller is used as a cooling circuit of a drive motor arranged on the hull.
도 1은 구동장치에 속한 냉각기에 대한 개략도이고,1 is a schematic diagram of a cooler belonging to a driving device,
도 2와 도 3은 각각 링형 채널의 평면도 및 단면도이며, 2 and 3 are plan and cross-sectional views of the ring-shaped channel, respectively,
도 4는 권선 오버행에 관련된 냉각관이고,4 is a cooling tube associated with the winding overhang,
도 5는 고정자의 성층 철심에 배치된 냉각채널이다. 5 is a cooling channel disposed in the stratified core of the stator.
본 발명의 목적은 냉각기의 설계와 배치를 간소화하는데 있다.It is an object of the present invention to simplify the design and layout of the chiller.
상기 목적은 본 발명에 따라 냉각기가, 선체 아래 및 샤프트형 지지부재의 벽 내부면에 배치되며 냉매의 유입구 및 배출구를 갖춘 링형 채널로 구성됨으로써 달성된다.This object is achieved according to the invention by the chiller being arranged in a ring-shaped channel, which is arranged under the hull and on the inner wall of the wall of the shaft-like support member and has an inlet and an outlet of the refrigerant.
본 발명에 따라 샤프트형 지지부재의 벽 자체가 냉각기 일부, 즉 주변 해수에 의해 냉매를 재냉각시키기 위한 열전달 요소로 사용된다. 냉각력의 최적화를 위해서는 링형 채널내에 삽입되어 지지부재의 벽과 연결되어 있는 추가 냉각 핀(cooling fin)이 제공되어야만 한다.According to the invention the wall of the shaft-like support member itself is used as a heat transfer element for recooling the refrigerant by part of the cooler, ie by the surrounding sea water. For the optimization of the cooling power an additional cooling fin must be provided which is inserted into the ring channel and connected to the wall of the support member.
상기 방식으로 냉각기의 장치 및 설계가 제공될 경우, 공간과 중량을 줄일 수 있고 한편으로는 구동장치의 회전가능한 부분에 다른 한편으로는 선체에 배치되어 있는 냉각장치의 서로 다른 부분들간의 가요성 커플링을 피할 수 있다.If the arrangement and design of the cooler is provided in this way, it is possible to save space and weight, and flexible coupling between the different parts of the cooling device arranged on the rotatable part of the drive on the one hand and on the hull on the other hand. The ring can be avoided.
본 발명에 따라 제공된 냉각기의 설계 및 장치는 특히 선박 구동 장치에 적합하며, 이러한 사실이 독일 특허출원 DE 196 27 323.4에 근거한 PCT/DE 97/01292(1997.06.24)에 기술되어 있다. 또한 상기 장치는 전동 모터가 영구 자석으로 여기된 저손실 회전자를 가지고, 고정자가 유체저항을 적게 받도록 형성된 하우징에 단단히 연결되어 있으며 상기 전동 모터에 배치된 하우징 내부가 유동 냉매를 가지고 있지 않는 것을 특징으로 한다. 상기 전동 모터는 사용 용도에 따라 주변 해수에 의해서만 직접 냉각이 가능하도록 설계되어 있다. 전동 모터 설비에 의해 많이 이용할 때 폐열이 권선 오버행(winding overhang), 고정자 철심(stator core) 및/또는 고정자의 성층철심(laminated core) 영역에 있는 구리코일에서 생겨날 수 있으며, 이는 하우징에 의해 바닷물에 직접 송출되지 않기 때문에 추가 냉각관에 의해 방출되어야만 한다. 상기 폐열의 방출은 본 발명에 따라 형성된 냉각기에 의해 바람직하게 이루어지는데, 이때 냉각관이 링형 냉각채널에서 고정자의 권선 오버행 및 경우에 따라 원주방향으로 동일한 분포로 배치된, 고정자의 축방향 냉각채널로 이어진다. The design and arrangement of the chiller provided according to the invention is particularly suitable for ship drive devices, the fact of which is described in PCT / DE 97/01292 (1997.06.24) based on German patent application DE 196 27 323.4. In addition, the device is characterized in that the electric motor has a low loss rotor in which the permanent magnet is excited, is firmly connected to a housing in which the stator is configured to receive less fluid resistance, and the inside of the housing disposed in the electric motor has no moving refrigerant. do. The electric motor is designed to be directly cooled only by the surrounding sea water according to the intended use. In many applications by electric motor installations, waste heat can be generated from copper coils in the areas of winding overhang, stator cores and / or laminated cores of the stator, which are introduced into the seawater by the housing. Since it is not sent directly, it must be discharged by an additional cooling tube. The release of the waste heat is preferably achieved by a cooler formed in accordance with the invention, wherein the cooling conduits are arranged in the ring-shaped cooling channel in the axial cooling channel of the stator, arranged in the same distribution in the circumferential direction overhanging the windings of the stator. It leads.
본 발명에 따라 형성된 냉각기를 갖는 전동 구동 장치에 대한 실시예가 도 1 내지 도 5에 도시되어 있다. An embodiment of an electric drive with a cooler formed in accordance with the invention is shown in FIGS. 1 to 5.
도 1은 선체(1) 일부분의 선미영역에 배치되어 있는 전동 구동장치에 대한 개략도이다. 이를 위해 고정자(5)와 영구 자석으로 여기된 회전자(6)로 구성되는 전동 모터(4)는 유체저항을 적게 받도록 형성된 하우징(2)에 위치하며, 이때 상기 고정자(5)는 관형 하우징부(3)에 끼워져 있다. 전동 모터(4)를 가진 하우징(2)은 샤프트와 같은 지지부재(7)에 의해 선체 위 또는 안에 고정된다.1 is a schematic diagram of an electric drive device disposed in the stern area of a portion of the hull 1. To this end, an electric motor 4 composed of a stator 5 and a rotor 6 excited by a permanent magnet is located in a housing 2 formed to receive less fluid resistance, wherein the stator 5 is a tubular housing part. It is fitted in (3). The housing 2 with the electric motor 4 is fixed on or in the hull by a supporting member 7, such as a shaft.
하우징(2) 위쪽, 지지부재(7) 내부에 냉각기(10)가 배치되어 있고, 상기 냉각기는 도 2 및 3에 따라 지지부재(7)의 벽(12) 내부면에 배치되어 있는 링형 채널(11)을 포함한다. 횡단면으로 볼 때 직사각형의 냉각채널은 지지부재(7)의 벽(12), 상하 횡단벽(14 및 15) 그리고 내벽(13)으로 구성된다. 링형 채널내로 벽(12)에서부터 뻗어나온 냉각 핀(16)이 튀어나와 있다. 지지부재(7)의 원주방향으로 뻗은 냉각채널(11)은 한 지점에서 분리벽(19)에 의해 중단되고, 상기 분리벽의 양측면에 유동 냉매를 위한 유입구(17) 및 배출구(18)가 배치된다.A cooler 10 is arranged inside the support member 7, above the housing 2, which cooler 10 is arranged on the inner surface of the wall 12 of the support member 7 according to FIGS. 2 and 3. 11). In the cross section, the rectangular cooling channel consists of the wall 12, the upper and lower transverse walls 14 and 15 and the inner wall 13 of the support member 7. Cooling fins 16 protruding from the wall 12 protrude into the ring channel. The cooling channel 11 extending in the circumferential direction of the supporting member 7 is interrupted by the separating wall 19 at one point, and the inlet 17 and the outlet 18 for the flowing refrigerant are disposed on both sides of the separating wall. do.
도 1에 따라 유입구(17) 및 배출구(18)에서부터 냉각관(20)이 고정자(5)의 권선 오버행(51)으로, 냉각관(21)은 고정자(5)의 성층 철심(52)으로 이어진다. 도 4에 따라 냉각관(20)은 권선 오버행(51)의 외부면 및 내부면에 배치된다. 도 5에 따라 고정자 성층 철심(52)에 원주방향으로 균일한 분포로 배치되어 있는 냉각채널(53)이 제공되며, 상기 냉각채널에 냉각관(21)이 연결될 수 있다.From the inlet 17 and the outlet 18 according to FIG. 1 the cooling tube 20 leads to the winding overhang 51 of the stator 5, and the cooling tube 21 leads to the stratified iron core 52 of the stator 5. . According to FIG. 4 the cooling tube 20 is arranged on the outer and inner surfaces of the winding overhang 51. According to FIG. 5, a cooling channel 53 is provided in the stator stratified iron core 52 in a uniform distribution in the circumferential direction, and a cooling tube 21 may be connected to the cooling channel.
냉매를 순환시키기 위해 각각 펌프(22 및 23)가 제공된다.Pumps 22 and 23 are provided respectively to circulate the refrigerant.
Claims (4)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19731816 | 1997-07-21 | ||
| DE19731816.9 | 1998-01-16 | ||
| DE19826229.9 | 1998-06-05 | ||
| DE1998126229 DE19826229C2 (en) | 1997-07-21 | 1998-06-05 | Electromotive drive device for a ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010021969A KR20010021969A (en) | 2001-03-15 |
| KR100518087B1 true KR100518087B1 (en) | 2005-10-04 |
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ID=7836745
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2000-7000534A KR100518087B1 (en) | 1997-07-21 | 1998-07-20 | Electromotive gondola or ship drive system with cooling device |
| KR10-2000-7000620A KR100430321B1 (en) | 1997-07-21 | 1998-07-21 | Electric motor pod drive system for a vessel with a cooling device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2000-7000620A KR100430321B1 (en) | 1997-07-21 | 1998-07-21 | Electric motor pod drive system for a vessel with a cooling device |
Country Status (2)
| Country | Link |
|---|---|
| KR (2) | KR100518087B1 (en) |
| DE (3) | DE19826229C2 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI115042B (en) | 2000-01-28 | 2005-02-28 | Abb Oy | Engine unit for ships |
| US7061147B2 (en) | 2001-08-30 | 2006-06-13 | Siemens Aktiengesellschaft | Superconducting electrical machines for use in navy ships |
| DE10143713B4 (en) * | 2001-08-30 | 2005-11-03 | Siemens Ag | Electric drive device for a ship |
| DE10158757A1 (en) * | 2001-11-29 | 2003-06-18 | Siemens Ag | marine propulsion |
| CA2611392C (en) * | 2005-06-09 | 2012-09-11 | Schottel Gmbh & Co. Kg | Ship propulsion unit and ship propulsion method |
| DE102008042598A1 (en) * | 2008-10-02 | 2010-04-08 | Zf Friedrichshafen Ag | Propeller drive assembly for controlling and propelling a ship |
| KR101271614B1 (en) * | 2011-02-25 | 2013-06-11 | 삼성중공업 주식회사 | Thruster for ship |
| EP2824027B1 (en) * | 2013-07-09 | 2016-04-20 | ABB Oy | Ship's propulsion unit |
| EP2824806B1 (en) * | 2013-07-09 | 2020-03-04 | ABB Schweiz AG | Ship's propulsion unit |
| EP2824028B2 (en) | 2013-07-09 | 2021-10-27 | ABB Oy | Ship's propulsion unit |
| DE102013214082A1 (en) | 2013-07-18 | 2015-01-22 | Siemens Aktiengesellschaft | Electric nacelle drive for a ship |
| DE102013214087A1 (en) | 2013-07-18 | 2015-01-22 | Siemens Aktiengesellschaft | Electric nacelle drive for a ship |
| WO2015185302A1 (en) * | 2014-06-03 | 2015-12-10 | Rolls-Royce Ab | Pod propulsion device and a method for cooling such |
| DE102015218896B4 (en) | 2015-09-30 | 2017-05-04 | Siemens Aktiengesellschaft | Drive for a waterborne means of transport |
| DE102015218889B3 (en) | 2015-09-30 | 2017-03-30 | Siemens Aktiengesellschaft | Drive for a waterborne means of transport |
| DE102018201206A1 (en) | 2018-01-26 | 2019-08-01 | Siemens Aktiengesellschaft | Modular arrangement of an inverter and aircraft with such an arrangement |
| DE102021206772A1 (en) | 2021-06-29 | 2022-12-29 | Scanlab Gmbh | Galvanometer drive with improved stator geometry |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997009771A1 (en) * | 1995-09-05 | 1997-03-13 | Abb Kraft A/S | Arrangement in a bulb generator |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2714866A (en) * | 1951-02-19 | 1955-08-09 | Friedrich W Pleuger | Device for propelling a ship |
| US2862122A (en) * | 1955-03-14 | 1958-11-25 | Westinghouse Electric Corp | Submersible dynamoelectric machine |
| JPS61205597A (en) * | 1985-03-08 | 1986-09-11 | Kojiro Yamaoka | Cooling device for outboard/inner and outerboard motor |
| GB9122719D0 (en) * | 1991-10-25 | 1991-12-11 | Thos Storey Eng Ltd | Improvements in and relating to heat exchangers |
| FI96590B (en) * | 1992-09-28 | 1996-04-15 | Kvaerner Masa Yards Oy | Ship's propulsion device |
| US5568781A (en) * | 1995-02-17 | 1996-10-29 | The United States Of America As Represented By The Secretary Of The Navy | Induced flow undersea vehicle motor cooling jacket |
| DE19627323A1 (en) * | 1996-06-26 | 1998-01-02 | Siemens Ag | Ship drive with synchronous motor to be arranged in a gondola |
-
1998
- 1998-06-05 DE DE1998126229 patent/DE19826229C2/en not_active Expired - Fee Related
- 1998-07-20 KR KR10-2000-7000534A patent/KR100518087B1/en not_active IP Right Cessation
- 1998-07-20 DE DE59802157T patent/DE59802157D1/en not_active Expired - Lifetime
- 1998-07-21 KR KR10-2000-7000620A patent/KR100430321B1/en not_active IP Right Cessation
- 1998-07-21 DE DE59805831T patent/DE59805831D1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997009771A1 (en) * | 1995-09-05 | 1997-03-13 | Abb Kraft A/S | Arrangement in a bulb generator |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010022051A (en) | 2001-03-15 |
| DE19826229C2 (en) | 2000-09-21 |
| KR20010021969A (en) | 2001-03-15 |
| DE59802157D1 (en) | 2001-12-20 |
| DE59805831D1 (en) | 2002-11-07 |
| DE19826229A1 (en) | 1999-02-25 |
| KR100430321B1 (en) | 2004-05-03 |
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