IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0823794
(2001-03-30)
|
우선권정보 |
DE-0032913 (2000-07-06) |
발명자
/ 주소 |
- Kullik, Gö
- tz
- Hansmann, Hans-Ullrich
- Krause, Andreas
|
출원인 / 주소 |
- Drä
- ger Medizintechnik GmbH
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
5 |
초록
▼
A respiration system is provided with an electrically driven rotary compressor as a gas delivery unit. The system makes a low-noise mounting of the gas delivery wheel possible. The gas delivery wheel can also be washed and sterilized and ensures a reliable separation of the breathing gas from the el
A respiration system is provided with an electrically driven rotary compressor as a gas delivery unit. The system makes a low-noise mounting of the gas delivery wheel possible. The gas delivery wheel can also be washed and sterilized and ensures a reliable separation of the breathing gas from the electric components. The respiration system rotary compressor is mounted magnetically axially and radially during operation.
대표청구항
▼
1. A respiration system, comprising: an electrically driven rotary compressor gas delivery unit with a housing, a compressor wheel with an axial magnetic bearing element, a radial magnetic bearing element and a rotary drive element, a rotary drive associated with said housing and cooperating with
1. A respiration system, comprising: an electrically driven rotary compressor gas delivery unit with a housing, a compressor wheel with an axial magnetic bearing element, a radial magnetic bearing element and a rotary drive element, a rotary drive associated with said housing and cooperating with said rotary drive element, an axial magnetic bearing associated with said housing and cooperating with said axial magnetic bearing element, and a radial magnetic bearing associated with said housing and cooperating with said radial magnetic beating element, said axial magnetic bearing and said radial magnetic bearing supporting said compressor wheel axially and radially during rotation of said compressor for operation, wherein said axial magnetic bearing and said radial magnetic bearing are each active magnetic bearings with electrically energized coils; and a control and evaluating unit receiving signals corresponding to speed of rotation of said compressor wheel and power consumption of the individual active magnetic bearings and calculating the state of imbalance of said compressor wheel from the measured speeds of rotation of said compressor wheel and the necessary power consumption of the individual active magnetic bearings and compensating by controlling compressor mounting support such that said compressor wheel will no longer rotate around its geometric axis of rotation but around a principal axis of inertia of said compressor wheel. 2. A respiration system in accordance with claim 1, wherein said rotary compressor gas delivery unit is a radial compressor, a side-channel compressor or a peripheral compressor.3. A respiration system in accordance with claim 1, wherein said rotary compressor gas delivery unit is part of an anesthesia apparatus with an anesthetic dispensing device.4. A respiration system in accordance with claim 1, further comprising a smooth-walled cylindrical can seal arranged between said compressor wheel and stationary components of the magnetic bearings, said axial magnetic bearing element, said radial magnetic bearing element and said rotary drive element being provided in a shaft portion of said compressor wheel enclosed in a jacket tube to seal said axial magnetic bearing element, said radial magnetic bearing element and said rotary drive element with respect to an exterior of said shaft portion.5. A respiration system in accordance with claim 1, wherein said control and evaluating unit varies coil current to said radial magnetic bearing element until the compressor wheel rotates around a compressor wheel principal axis of inertia by superimposing to the coil currents a component of measured current values during position-controlled operation, the component of the measured current values being a superimposed in antiphase to the coil currents.6. A respiration system comprising: a gas flow line; a gas delivery housing with a chamber with an intake opening and with a discharge opening, said gas flow line being to said housing in flow connection with said discharge opening; a gas delivery wheel with a shaft portion extending in an axial direction and a wheel portion extending in a radial direction, the shaft portion having, a gas delivery wheel radial magnetic bearing part, a gas delivery wheel motor part and a gas delivery wheel axial magnetic bearing part at a shaft portion lower end, said axial direction being substantially vertical and said radial direction being substantially horizontal; an axial magnetic bearing element supported by said housing at a location adjacent to said chanter, said axial magnetic bearing element being positioned below said shaft portion to interact with said gas delivery wheel axial magnetic bearing part; a radial magnetic bearing element supported by said housing at a location adjacent to said cavity, said radial magnetic bearing element being positioned to interact with said gas delivery wheel radial magnetic bearing part; magnetic motor coils supported by said housing at a location adjacent to said cavity, positioned to interact with said gas delivery wheel motor part; and a drive electronic unit connected to said magnetic motor coils for energizing said magnetic motor cods for rotation of said gas delivery wheel for operation and for providing power to said axial magnetic bearing element and said radial magnetic bearing element such that said gas delivery wheel is positioned in a vertical position and in a horizontal position in said cavity. 7. A respiration system in accordance with claim 6, further comprising: a control unit for providing power to said axial magnetic bearing element and said radial magnetic bearing element such that said gas delivery wheel is in a floating position in said chamber. 8. A respiration system in accordance with claim 7, wherein said axial magnetic bearing element and said radial magnetic bearing element are each active magnetic bearings with electrically energized coils.9. A respiration system in accordance with claim 6, wherein one of said axial magnetic bearing element and said radial magnetic bearing element is an active magnetic bearing with electrically energized bearing coils and at least one of said axial magnetic bearing element and said radial magnetic bearing element is a passive magnetic bearing with permanent magnets.10. A respiration system in accordance with claim 6, wherein said radial magnetic bearing element is an active radial magnetic bearing with electrically energized bearing coils and further comprising a passive radial magnetic bearing with permanent magnets only and at least one passive axial magnetic bearing with permanent magnets only.11. A respiration system in accordance with claim 6, further comprising a control and evaluating unit receiving signals corresponding to a speed of rotation of the gas delivery wheel and power consumption of the individual magnetic elements and calculating the state of imbalance of the gas delivery wheel from the measured speeds of rotation of the gas delivery wheel and the necessary power consumption of the individual active magnetic bearings and compensating by controlling gas delivery wheel mounting support such that the gas delivery wheel will no longer rotate around its geometric axis of rotation but around its principal axis of inertia.12. A respiration system in accordance with claim 11, wherein said control and evaluating unit varies coil current to said radial magnetic bearing element until the gas delivery wheel rotates around a gas delivery wheel principal axis of inertia by superimposing to the coil currents a component of measured current values during position-controlled operation, the component of the measured current values being superimposed in antiphase to the coil currents.13. A respiration system in accordance with claim 6, wherein the gas delivery wheel is a radial compressor, a side-channel compressor or a peripheral compressor.14. A respiration system in accordance with claim 6, wherein the gas delivery wheel is part of an anesthesia apparatus with an anesthetic dispensing device.15. A respiration system in accordance with claim 6, further comprising a smooth-walled cylindrical can seal arranged between said gas delivery wheel and said housing, covering said axial magnetic bearing element, said radial magnetic bearing element and said magnetic motor coils, said axial magnetic bearing element, said radial magnetic bearing element and said rotary drive element being provided in said shaft portion of said gas delivery wheel enclosed in a jacket tube to seal said axial magnetic bearing element, said radial magnetic bearing element and said rotary drive element with respect to an exterior of said shaft portion.16. A respiration system, comprising: a gas flow line; a gas delivery housing with a cavity with an intake opening and a discharge opening, said gas flow line being connected to said housing in flow connection with said discharge opening; a gas deli very wheel with an shaft portion extending in an axial direction and a wheel portion extending in a radial direction, the shaft portion having a gas delivery wheel axial magnetic bearing part at a lower end of said shaft portion, a gas delivery wheel radial magnetic bearing part and a gas delivery wheel motor part, said axial direction being substantially vertical and said radial direction being substantially horizontal; a vertical magnetic bearing element supported by said housing at a location adjacent to said cavity and below said shaft portion, said vertical magnetic bearing element being positioned to interact with said gas delivery wheel axial magnetic bearing part to provide a magnetic force acting on said gas delivery wheel in a vertical direction relative to said housing; a horizontal magnetic bearing element supported by said housing at a location adjacent to said cavity, said horizontal magnetic, bearing element being positioned to interact with said gas delivery wheel radial magnetic bearing part to provide a magnetic force acting on said gas delivery wheel in a horizontal direction relative to said housing; magnetic motor coils supported by said housing at a location adjacent to said cavity, positioned to interact with said gas delivery wheel motor pan; and a drive electronic unit connected to said magnetic motor coils for energizing said magnetic motor coils for rotation of said gas delivery wheel for operation and for providing power to said vertical magnetic bearing element and said horizontal magnetic bearing element such that said gas delivery wheel is positioned in a vertical position and a horizontal position in said cavity, said vertical magnetic bearing and said horizontal magnetic bearing each being active magnetic bearings with electrically energized coils with feedback signals sent to said drive electronic unit to control the horizontal and vertical disposition of said gas delivery wheel in said cavity. 17. A respiration system in accordance with claim 16, wherein said drive electronic unit is a control and evaluating unit receiving signals corresponding to speed of rotation of the gas delivery wheel and power consumption of the individual magnetic bearing elements and calculating the state of imbalance of the gas delivery wheel from the measured speeds of rotation of the gas delivery wheel and the necessary power consumption of the individual active magnetic bearings and compensating a power signal to said horizontal magnetic bearing element until the gas delivery wheel rotates around a gas delivery wheel principal axis of inertia.18. A respiration system in accordance with claim 17, wherein said control and evaluating unit varies coil current to said horizontal magnetic bearing element until the gas delivery wheel rotates around a gas delivery wheel principal axis of inertia by superimposing to the coil currents a component of measured current values during position-controlled operation, the component of the measured current values being superimposed in antiphase to the coil currents.19. A respiration system in accordance with claim 16, wherein the gas delivery wheel is a radial compressor, a side-channel compressor or a peripheral compressor.20. A respiration system in accordance with claim 16, wherein the gas delivery wheel is part of an anesthesia apparatus with an anesthetic dispensing device.21. A respiration system in accordance with claim 16, further comprising a smooth-walled cylindrical can seal arranged between said gas delivery wheel and said housing, covering said vertical magnetic bearing element, said horizontal magnetic bearing element and said magnetic motor coils, said axial magnetic bearing element, said radial magnetic bearing element and said rotary drive element being provided in said shaft portion of said gas delivery wheel enclosed in a jacket rube to seal said axial in magnetic bearing element, said radial magnetic bearing element and said rotary drive element wit h respect to an exterior of said shaft portion.
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