Compressor

Abstract

A compressor for providing pressurized air at a predetermined pressure and at a predetermined volume. The compressor has a motor with a shaft to which an eccentric is attached which moves a crank rod upwardly and downwardly and to which is attached a flexible diaphragm. The reciprocal movement of the diaphragm draws air into a chamber while an inlet flapper valve opens and expels air from the chamber through an outlet flapper valve. The flapper valves are made from spring steel and act in a cantilever movement to open and close the inlet and outlet passageways. O-rings are provided to deaden the sound of the flappers. A counterweight is attached to the eccentric to provide an opposed force to the force generated by rotation of the eccentric. An air bleeder allowing air movement between the inlet and outlet passageways may be provided to adjust the air pressure emanating from the compressor.

1 . A compressor ( 120 ) used for supplying air to a nozzle ( 101 ), said compressor ( 120 ) comprising a motor ( 122 ) with an extending shaft ( 130 ) to power said compressor ( 120 ), an eccentric crank ( 172 ) connected to said shaft ( 130 ), a crank rod ( 132 ) connected to said eccentric crank ( 172 ), a counterbalance ( 170 ) connected to said eccentric crank ( 172 ) and used to offset the force generated by the rotation of said crank rod ( 132 ) and said eccentric crank ( 172 ), a body portion ( 123 ) within which said crank rod ( 132 ) moves and which includes a body head ( 160 ), a valve head portion ( 144 ) housing inlet and outlet openings ( 142 ,  143 ) with flapper valves ( 152 ,  153 ) allowing the opening and closing of said inlet and outlet openings ( 142 ,  143 ), a spacer portion ( 150 ) having inlet and outlet passageways allowing egress and ingress of air moving through said inlet and outlet openings ( 142 ,  143 ), a diaphragm ( 134 ) between said body head and spacer portions ( 160 ,  150 ) which diaphragm ( 134 ) is moved upwardly and downwardly by said crank rod ( 132 ), a seal ( 162 ) between said valve head and spacer portions ( 144 ,  150 ) and first and second generally flat flappers ( 152 ,  153 ) opening and closing said inlet and outlet passageways, one of said flappers ( 152 ,  153 ) being connected to said valve head portion ( 144 ) and the other of said flappers ( 152 ,  153 ) being connected to said spacer portion ( 150 ). 
     
     
         2 . A compressor as in  claim 1  and further including an air bleeder ( 174 ) to increase and/or decrease the air moving between the inlet and outlet chambers ( 181 ,  182 ) of said valve head portion ( 144 ). 
     
     
         3 . A compressor as in  claim 2  and further comprising at least one o-ring seal ( 154 ) between at least one of said flappers ( 152 ,  153 ) and one of said valve head or spacer portions ( 144 ,  150 ).