Stabilizing means for free piston-type linear resonant reciprocating machines

  • US 4,750,871 A
  • Filed: 03/10/1987
  • Issued: 06/14/1988
  • Est. Priority Date: 03/10/1987
  • Status: Expired due to Fees
First Claim
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1. A resonant reciprocating compressor, comprising:

  • a compressor housing having fluid intake and discharge passage means;

    an electric reciprocating motor having a movable armature, said motor disposed within said compressor housing and adapted to be driven cyclically when said motor is energized from an A-C power source and substantially in accordance with the frequency of the A-C power source;

    cylinder means disposed within said housing;

    intake and discharge valve means operatively associated with said cylinder means and with respective intake and discharge passage means, said discharge passage means being arranged such that the average pressure in each discharge passage means is substantially the same;

    piston means disposed within said cylinder means, said piston means coupled to and forming a reciprocating assembly with said motor armature and being operative to compress a working fluid therein;

    said cylinder means and said piston means being arranged and constructed in a two opposed single-acting cylinder configuration; and

    means operatively associated with said reciprocating assembly for producing a stabilizing force gradient in a direction to restore the reciprocating assembly assembly to the centered position including port means separate from said discharge passage means for communicating the compressor discharge pressure to the compressor cylinders during some portion of the stroke of the reciprocating assembly.

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