Resonator pumping system

• US 6,425,740 B1
• Filed: 07/28/2000
• Issued: 07/30/2002
• Est. Priority Date: 07/28/2000
• Status: Expired due to Fees

• Current Assignee: Sterling Investments LC
• Original Assignee: SARCOS LC (Sarcos Technology & Robotics Corp.)
• Inventors: Jacobsen, Stephen C., Davis, Clark C.
• Primary Examiner(s): Freay, Charles G.
• Assistant Examiner(s): Rodriguez, William H.
• Application Number:
  US09/627,852
• Time in Patent Office: 732 Days
• Field of Search: 417/415, 417/416, 417/501, 417/490, 417/244, 417/413.3
• US Class Current: 417/2
• CPC Class Codes: F04B 17/003 driven by piezoelectric means F04B43/046 and F04B43/095 take precedence
• CPC Class Codes: F04B 17/042 the solenoid motor being separated from the fluid flow
• CPC Class Codes: F04B 19/006 Micropumps F04B43/043 and F04B43/095 take precedence
• CPC Class Codes: F04B 7/0076 the members being actuated by electro-magnetic means

Abstract

A resonator pump system includes a resonating structure configured for resonating, and a fluid pump coupled to and driven by the resonating structure. An energy source is operatively coupled to the resonating structure for maintaining resonance.

Claims

1. A resonator pump system comprising:

a resonating structure configured for resonating movement;

an energy source operatively coupled to the resonating structure for maintaining resonance; and

a fluid pump coupled to and driven by the resonating structure.

2. The resonator pump system of claim 1, wherein the resonating structure resonates between approximately 200 Hz to 2 KHz.

3. The resonator pump system of claim 1 wherein the fluid pump has a diameter between approximately 100 to 1000 microns.

4. The resonator pump system of claim 1, wherein the resonating structure has a mass substantially greater than a mass of fluid in the fluid pump.

5. The resonator pump system of claim 1, wherein the resonating structure has kinetic energy substantially greater than an amount of energy used to drive the fluid pump.

6. The resonator pump system of claim 1, wherein the resonating structure resonates at a constant amplitude.

7. The resonator pump system of claim 1, wherein the resonating structure resonates at a constant frequency.

8. The resonator pump system of claim 1, further comprising:

a sensor configured for sensing the resonation of the resonating structure and producing a sensor signal; and

wherein the energy source includes a driver responsive to the sensor signal for applying a force to the resonating structure to maintain the resonance.

9. The resonator pump system of claim 8, further comprising:

a controller coupled to the driver and the sensor for controlling the amplitude or frequency of the resonating structure.

10. The resonator pump system of claim 1, wherein the energy source is a magnet.

11. The resonator pump system of claim 1, wherein the fluid pump is mechanically coupled to a moving portion of the resonating structure by a transmission arm coupled to and between the resonating structure and the fluid pump.

12. The resonator pump system of claim 1, wherein the fluid pump is coupled to the resonating structure by a flexible arm rigidly coupled to both the pump and the structure.

13. The resonator pump system of claim 1, wherein the fluid pump is coupled to the resonating structure by a rigid arm pivotally coupled to both the pump and the structure.

14. The resonator pump system of claim 1, wherein the resonating structure includes:

a base;

a spring element coupled at one end to the base; and

a mass, coupled to another end of the spring element, and configured for linear motion with respect to the base.

15. The resonator pump system of claim 1, wherein the resonating structure includes:

a base;

an elongated and flexible spring element with one end coupled to the base; and

a mass, coupled to another end of the flexible spring element, and configured for arcuate motion with respect to the base.

16. The resonator pump system of claim 1, wherein the resonating structure includes:

a base; and

a piezoelectric element, coupled to the base, and configured for bending under an applied electric field.

17. The resonator pump system of claim 1, wherein the fluid pump includes:

a cavity having a fluid inlet and a fluid outlet; and

a piston, movably disposed within the cavity and operatively coupled to the resonating structure.

18. The resonator pump system of claim 1, wherein the fluid pump comprises first and second fluid pumps including:

a first cavity disposed on one side of the resonating structure; and

a first piston, movably disposed within the first cavity and operatively coupled to the resonating structure; and

a second cavity disposed on another side of the resonating structure; and

a second piston, movably disposed within the second cavity and operatively coupled to the resonating structure, such that the first and second fluid pumps alternately pump to achieve a substantially constant fluid flow.

19. The resonator pump system of claim 1, wherein the resonating structure includes:

an elongated and flexible spring element with one end coupled to a base; and

a mass, coupled to another end of the flexible spring element, and configured for arcuate motion; and

wherein the fluid pump includes;

a cavity disposed proximate the spring element; and

a piston directly connected to the spring element.

20. The resonator pump system of claim 1, wherein the fluid pump further includes a fluid inlet and a fluid outlet, each having a valve selected from the group consisting of duckbill check valves, ball check valves, and spool valves.

21. The resonator pump system of claim 1, further comprising:

a spool valve fluidly coupled to the fluid pump; and

a second resonating structure, coupled to the spool valve, and configured for resonating 90 degrees out of phase from the first resonating structure.

22. The resonator pump system of claim 1, further comprising:

a plurality of resonating structures coupled to a plurality of fluid pumps, the fluid pumps being coupled in series to increase pressure.

23. The resonator pump system of claim 1, further comprising:

a plurality of resonating structures coupled to a plurality of fluid pumps, the fluid pumps being coupled in parallel to increase flow.

24. The resonator pump system of claim 1, further comprising:

a first plurality of resonating structures coupled to a first plurality of fluid pumps, the first plurality of fluid pumps being coupled in series to increase pressure; and

a second plurality of resonating structures coupled to a second plurality of fluid pumps, the second plurality of fluid pumps being coupled in parallel to increase flow.

25. The resonator pump system of claim 24, wherein the plurality of resonating structures and fluid pumps are individually operable to control the pressure and flow.

26. The resonator pump system of claim 1, wherein both the resonating structure and fluid pump comprise:

first and second flat layers; and

a third layer, sandwiched between the first and second layers, and being patterned with openings to form both the resonating structure and the fluid pump.

27. The resonator pump system of claim 1, wherein the fluid pump and resonating structure are inserted into an IV line.

28. A resonator pump system comprising:

a resonating structure including a resonating mass configured for oscillating motion, and an energy storing and releasing system coupled-to the resonating mass;

an energy source, coupled to the resonating structure, for maintaining the oscillating motion of the mass;

a transmission arm, coupled to a moving portion of the resonating structure, for coupling the oscillating motion of the resonating mass;

a fluid pump, driven by the resonating structure, and including a cavity and a piston movably disposed in the cavity and operatively coupled to the transmission arm.

29. A resonator pump system comprising:

a resonating structure configured for oscillating motion;

a driver, operatively engaging the resonating structure, for applying a force to the resonating structure to maintain the oscillating motion;

a transmission arm operatively coupled to a moving portion of the reciprocating structure;

a cavity having a fluid inlet and a fluid outlet; and

a piston, movably disposed within the cavity and operatively coupled to the transmission arm.

30. A resonator pump system comprising:

first and second layers;

a third layer, sandwiched between the first and second layers, and patterned with openings to form;

a resonating structure, attached to the third layer, and configured for resonating;

a fluid pump including a cavity and a piston movably disposed in the cavity; and

a transmission arm coupled to and extending between the resonating structure and the piston.

31. A resonator pump system comprising:

a first resonating structure configured for resonating;

a fluid pump coupled to and driven by the first resonating structure;

a second resonating structure configured for resonating 90 degrees out of phase from the first resonating structure;

a spool valve, fluidly coupled to the fluid pump, and operatively coupled to and driven by the second resonating structure; and

at least one an energy source operatively coupled to the resonating structures for maintaining resonance.