Suspension and vibration isolation system for a linear reciprocating machine
AssigneeMechanical Technology Incorporated
InventorPeter Curwen
Life of this patent
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Abstract
A suspension system for a linear reciprocating machine incorporates dynamic vibration isolation means into a mass flow system of the machine. An antiphase mass movement results in an essentially zero transmissibility of machine vibration to an outer casing enclosing the machine.
Claims16
A vibration isolation system for a machine reciprocating in a "lateral" direction comprising:
- a frame for supporting the machine relative to ground;
- a suspension system, suspending said machine from said frame and including functionally operating components of said machine providing a resilient lateral support means coupled between said frame and the reciprocating machine;
- a counterbalance mass positioned at a predetermined point on one or more selected components of said resilient lateral support means, wherein, in response to forces thereupon resulting from reciprocating movement of the machine, an antiphase movement of the counterbalance mass results in a substantially reduced resultant force exerted upon said frame.
A vibration isolation means for isolating vibratory displacement and vibratory forces of a reciprocating machine, said isolation means comprising:
- resilient conduit means operatively coupled between said machine and a base, said resilient means providing mass flow with respect to said machine and exerting a restoring force on said machine whenever the machine is displaced from an equilibrium position;
- a counterbalance mass positioned at a predetermined point on at least one of said resilient conduit means where, in response to the vibratory displacement of said machine, an anti-phase movement of the counterbalance mass results in a substantially reduced resultant force exerted upon said frame.
A compressor system of the reciprocating type including vibration isolation means, said system comprising:
- a linear reciprocating compressor;
- means for providing mass flow to said compressor including at least one resilient helical discharge conduit;
- suspension means for non-rigidly supporting said compressor, said means including said conduit spiraled about an end region of said conduit, one end region of each said conduit being rigidly affixed to said compressor, another end region of each said conduit being rigidly affixed to an outer casing, said helical conduit providing mass flow from said compressor and further providing resilient support in a direction substantially coaxial with the compressors' linear reciprocating movement;
- a counterbalance mass positioned at a predetermined point on at least one conduit, where, in response to forces thereupon resulting from reciprocating movement of the compressor, an anti-phase movement of the counterbalance mass results in a substantially reduced resultant force exerted upon said casing.
A mass-elastic vibration isolation system for reducing the resultant dynamic force transmitted to a supporting frame by a reciprocating body, comprising:
- a second body having a mass M.sub.m ;
- a spring element connected between said bodies and having a spring constant K.sub.1 in a direction of reciprocation of said reciprocating body;
- a second spring element connected between said second mass and said frame and having a spring constant K.sub.2 in the direction of reciprocation of said reciprocating body;
- a third spring connected between said reciprocating body and said frame and having a spring constant K.sub.3 in the direction of reciprocation of said reciprocating body;
- ##EQU4## where w is the operating frequency of said reciprocating body and is greater than the natural frequency of the assembly consisting of said first and second spring elements and the interconnected second body.
A vibration isolation and suspension system incorporated into a mass flow system of a linear reciprocating machine comprising:
- a frame for supporting the machine relative to ground;
- support means for simultaneously suspending said machine from said frame and providing mass flow to and from said suspended machine, said support means comprising at least one resilient inlet and discharge conduit, each conduit having a first end engaging said machine and a second end engaging said frame;
- a counterbalance mass positioned at a predetermined point along at least one of said conduits wherein vibratory motion resulting from forces generated by said reciprocating machine is isolated from said frame.
Dependencies are inferred from the claim text.