Method and shear-driven micro-fluidic pump
AssigneeAAR Aerospace Consulting, LLC
InventorNihad E. Daidzic
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Abstract
An example includes an apparatus to pump a fluid. The apparatus includes a housing extending along a length defining an elongate interior, an actuator in the housing, conforming to the elongate interior, the actuator including a plurality of lumens, each having a length extending substantially parallel to the elongate interior, each from around 10 to 200 micrometers across and an actuator configured to oscillate the actuator in the actuator housing along the length of the elongate interior with a rate differential between movement in a first direction versus movement in a second direction opposite the first direction to pump the fluid.
Claims21
A method comprising:
- providing a pump housing defining an elongate interior that extends along a length of the pump housing, wherein the pump housing includes a piston in the pump housing, wherein the piston includes a first plurality of lumens, and wherein each lumen of the first plurality of lumens has a length extending substantially parallel to the elongate interior;
- pumping a fluid by oscillating the piston in the elongate interior in the pump housing, wherein, in a first mode, each cycle of the oscillating has a rate differential between piston movement in a first direction versus piston movement in a second direction opposite the first direction to cause more of the fluid to move in the first direction than in the second direction.
An apparatus to pump a fluid, the apparatus comprising:
- a pump housing;
- a piston in the pump housing, wherein the piston includes a first plurality of lumens, and wherein each lumen of the first plurality of lumens has a length extending substantially parallel to the length of the piston,
- wherein, in a first mode, the piston repeatedly moves relative to the pump housing with a rate differential between movement in a first direction and movement in a second direction opposite the first direction in order to generate piston oscillation, wherein the piston oscillation causes more of the fluid to move in the first direction than in the second direction.
An apparatus comprising:
- a pump housing defining an elongate interior that extends along a length of the pump housing;
- and
- a unitary piston located in the elongate interior of the pump housing, wherein the piston is the only moving part, and wherein the piston moves relative to the pump housing in an oscillatory pumping motion, and wherein, in a first mode, each cycle of the oscillatory pumping motion has a rate differential between movement in a first direction versus movement in a second direction opposite the first direction to cause more fluid to move in the first direction than in the second direction.
Dependencies are inferred from the claim text.