Fluid pump apparatus
AssigneesNtn Corporation, Terumo Kabushiki Kaisha
InventorsTakayoshi Ozaki, Minoru Suzuki
Life of this patent
Estimating the term…
Abstract
There is provided a fluid pump wherein in a casing at a pump unit there is provided an impeller coupled with a rotor contactless and also supported contactless by a controlled magnetic bearing unit, and rotated by a motor to output a fluid, with a position detection unit, an electromagnet or a motor stator cooled by a fluid flowing through a pump chamber.
Claims17
A fluid pump apparatus comprising:
- a casing having therein
- a pump unit chamber,
- a drive unit chamber and
- a controlled magnetic bearing unit chamber;
- a pump unit being accommodated in said pump unit chamber and having a rotative member rotated to output a fluid;
- a drive unit accommodated in said drive unit chamber and coupled with one side of said rotative member contactless through a magnetic force to levitate said one side of said rotative member while rotatably driving said one side of said rotative member;
- a position detection unit being accommodated in said controlled magnetic bearing unit chamber and detecting a position of said rotative member in levitation;
- and
- a controlled magnetic bearing unit being accommodated in said controlled magnetic bearing unit chamber and contactlessly supporting the other side of said rotative member in response to an output of said position detection unit,
- wherein
- said casing includes
- a first partition provided between said pump unit chamber and said drive unit chamber to have these chambers partitioned from each other, and
- a second partition provided between said pump unit chamber and said controlled magnetic bearing unit chamber to have these chambers partitioned from each other, and said drive unit is attached to said first partition.
A fluid pump apparatus having a casing, an impeller driven, levitated, a drive unit driving said impeller, a sensor sensing a position of said impeller in levitation, and a controlled magnetic bearing unit contactlessly supporting said impeller in response to an output of said sensor, wherein said casing has housed therein at least one of a position detection circuit operative in response to the output of said sensor to determine the position of said impeller in levitation, a drive circuit controlling said drive unit, and a magnetic bearing control circuit controlling said controlled magnetic bearing.
A fluid pump apparatus comprising:
- a casing having therein
- a pump unit chamber,
- a drive unit chamber and
- a controlled magnetic bearing unit chamber;
- a pump unit being accommodated in said pump unit chamber and having a rotative member rotated to output a fluid;
- a drive unit accommodated in said drive unit chamber and coupled with one side of said rotative member contactless through a magnetic force to levitate said one side of said rotative member while rotatably driving said one side of said rotative member;
- a position detection unit being accommodated in said controlled magnetic bearing unit chamber and detecting a position of said rotative member in levitation;
- and
- a controlled magnetic bearing unit being accommodated in said controlled magnetic bearing unit chamber and contactlessly supporting the other side of said rotative member in response to an output of said position detection unit,
- wherein
- said casing includes
- a first partition provided between said pump unit chamber and said drive unit chamber to have these chambers partitioned from each other, and
- a second partition provided between said pump unit chamber and said controlled magnetic bearing unit chamber to have these chambers partitioned from each other, and said drive unit is attached to said first partition without contacting any other wall of said drive unit chamber.
A fluid pump apparatus comprising:
- a casing having therein
- a pump unit chamber,
- a drive unit chamber and
- a controlled magnetic bearing unit chamber;
- a pump unit being accommodated in said pump unit chamber and having a rotative member rotated to output a fluid;
- a drive unit accommodated in said drive unit chamber and coupled with one side of said rotative member contactless through a magnetic force to levitate said one side of said rotative member while rotatably driving said one side of said rotative member;
- a position detection unit being accommodated in said controlled magnetic bearing unit chamber and detecting a position of said rotative member in levitation;
- a controlled magnetic bearing unit being accommodated in said controlled magnetic bearing unit chamber and contactlessly supporting the other side of said rotative member in response to an output of said position detection unit,
- wherein
- said casing includes
- a first partition provided between said pump unit chamber and said drive unit chamber to have these chambers partitioned from each other, and
- a second partition provided between said pump unit chamber and said controlled magnetic bearing unit chamber to have these chambers partitioned from each other, and
- said drive unit is attached to said first partition without contacting any other wall of said drive unit chamber;
- and
- said casing has housed therein at least one of
- a position detection circuit operative in response to the output of said position detection unit to determine the position of said impeller in levitation,
- a drive circuit controlling said drive unit, and
- a magnetic bearing control circuit controlling said controlled magnetic bearing unit.
Dependencies are inferred from the claim text.