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US 6,745,767 B2Granted
Respiration system with an electrically driven rotary compressor
AssigneeDräger Medizintechnik GmbH
InventorsGötz Kullik, Hans-Ullrich Hansmann, Andreas Krause
Life of this patent
Estimating the term…
Abstract
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.
Claims21
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.
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.
5 more elements
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 delivery 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.
5 more elements
Dependencies are inferred from the claim text.