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Ultra High Efficiency and Reliability in New Generation Pump
Technical Paper
2007-01-3129
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Piezoelectric pumps offer great potential as an alternative electro-mechanical actuator and as a hydraulic power source. As an actuator, this pump may provide solutions to control system problems in robotics, process control, bioengineering, advanced remote control (telepresence), and automation. As a hydraulic power source they may be useful for active thermal cooling, fluid management, and metering pumps in life support applications. The benefits of piezoelectric based pumps and actuators include increased efficiency, self-cooling, lightweight, compact size, high mechanical reliability, positive displacement, self-priming, no lubrication, no vibration, and rotational inertia.
Oceaneering Space Systems (OSS) has produced two successful piezoelectric pump prototypes. The first one is a double-acting diaphragm pump driven by piezoelectric PolyVinylidine DiFluoride (PVDF) polymer. The second prototype is a Lead Zirconate Titanate (PZT) thermoplastic laminated pump. The thermoplastic material acts as a dielectric material between the layers of PZT; and adds durability to the final PZT-thermoplastic composite.
Based on the mathematical characterization and fabrication technology developed during the course of past work, it is now possible to envision improved design concepts. This paper provides an overview of the past work, describes improved design concepts for new generation of piezoelectric based “capacitive motors” and pumps, and outlines the benefits of the proposed technology in several applications relevant to the Constellation Program, including predicted system efficiencies near 90%.
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Topic
Citation
Sager, F. and Hargrave, B., "Ultra High Efficiency and Reliability in New Generation Pump," SAE Technical Paper 2007-01-3129, 2007, https://doi.org/10.4271/2007-01-3129.Also In
References
- Piezoelectric Water Pump for Use in Extra Vehicular Activities Phase I Final Report NAS 9-18850.
- Excerpt from Piezoelectric Water Pump for use in Extravehicular Activities phase II final report (NAS 9-19104) The original analysis was performed by Christopher J. Matice Ph.D., PE with Stress Engineering Services, Inc.
- U.S. Patent # 5,761,782 for Method of Fabrication of Benders 06 09 98
- U.S. Patent #5,889,354 for Unit Cell Geometry 03 30 99
- U.S. Patent #5,798,600 for Application of Piezoelectric Unit Cells to Pump Design 08 25 98
- U.S. Patent # 5,892,314 for Electrical Drive Circuit 04 06 99