US 6,551,070 B2 · Devices and methods for noise suppression in pumps

Abstract

Gear pumps are disclosed having a gear-assembly section, a drive-assembly section, and at least one passage fluidly connecting the gear-assembly and drive-assembly sections, wherein the passage includes substantially non-movable walls defining a non-linear fluid-flow path. A particular example is a magnetic gear pump having a gear-assembly section; a section that includes a magnet assembly received in a cup cavity; and a third section located between the gear-assembly and magnet-assembly sections, wherein the third section includes a fluid-input port, a fluid-output port, and at least one conduit for fluidly interconnecting the gear-assembly and magnet-assembly sections; and a member defining at least one non-linear passage in fluid connection with the third section conduit and the cup cavity.

Claims45

Dependent claims

A gear pump, comprising:

a first section comprising a gear assembly;
a second section comprising a drive assembly;
and
at least one connecting passage fluidly connecting the first section and the second section together, wherein the connecting passage includes substantially non-movable walls defining a non-linear fluid-flow path.

1 more element

A magnetic pump, comprising:

a first section comprising at least one fluid-input port and at least one fluid-output port for directing a fluid flow such that bubbles are formed in the fluid whenever the fluid flows through the first section;
a second section comprising a magnet assembly received in a cup cavity;
a conduit fluidly connecting the first section and the second section;
and
bubble-reducing means for reducing the amount of the bubbles flowing from the first section to the second section.

2 more elements

Dependencies are inferred from the claim text.

Devices and methods for noise suppression in pumps

Life of this patent

Devices and methods for noise suppression in pumps

Life of this patent

Abstract

Claims45