Patent ID: 6547530
Filing Date: 2003-04-15
Classification: A61M,F02K,F03B,F04D,F05B,F05D,F16C,Y02E,Y10S

Abstract:
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.