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Magnetic Driven Compression Cascade and Packaging

IP.com Disclosure Number: IPCOM000114608D
Original Publication Date: 1995-Jan-01
Included in the Prior Art Database: 2005-Mar-29
Document File: 4 page(s) / 100K

Publishing Venue

IBM

Related People

Blum, A: AUTHOR [+2]

Abstract

Disclosed is an alternative method of operating and a packaging of a compressor cascade described in (*). The compressor cascade in (*) consists of a plurality of micromechanical membrane pumps which are tandem-connected and their arrangement and design allows compression to be effected at a low operating pressure. The membranes are synchronously energized to resonance oscillations by electrostatic forces.

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Magnetic Driven Compression Cascade and Packaging

      Disclosed is an alternative method of operating and a packaging
of a compressor cascade described in (*).  The compressor cascade in
(*) consists of a plurality of micromechanical membrane pumps which
are tandem-connected and their arrangement and design allows
compression to be effected at a low operating pressure.  The
membranes are synchronously energized to resonance oscillations by
electrostatic forces.

      Magnetic forces are much stronger than electrostatic forces and
the magnetic field may be provided by coils laying outside the
compression cascade.  The use of magnetic forces allows the
construction of compression cascades showing larger dimensions.

      Fig. 1 shows some of the membrane pumps 1 of the compression
cascade of (*) with the membrane 2 consisting of a foil 3 coated
with magnetic material.  A suitable magnetic coating material is
cobalt-samarium which provides a strong magnetic field strenght.
Oscillation of the membranes 3 may now be stimulated by an outside
magnetic field as shown in Fig. 2.  The cylindrical core 4 of the
compression unit 5 in this example stimulates three parallel
compression cascades 6a, 6b, 6c with the magnetic field lines
surrounding the core 4 and lying perpendicular to the surface of the
membranes 2.  The pumping frequency is about 1 kHz.

      In Fig. 3 an example for a complete packaging may be seen.  The
compression cascade units 5 are arrang...