Patent ID: 6767193
Filing Date: 2004-07-27
Classification: F04B,Y10T

Abstract:
A piston type compressor for compressing a fluid, comprising:a cylinder black having at least one piston bore formed therein; a piston slidably received in said piston bore; a drive unit for sucking the fluid into said piston bore and compressing the fluid in the piston bore by using said piston; a housing having an intake chamber for taking the fluid thereinto, said housing being attached to one end of said cylinder block so that one end of said piston bore faces said intake chamber; a valve base plate disposed between said end of said cylinder block and said housing, said valve base plate having mutual isolated first and second intake openings through which said intake chamber and said piston bore are fluidly communicated; and an intake valve plate disposed between said end of said cylinder block and said valve base plate and having a reed valve element defined thereby, said reed valve element being arranged to open said first and second intake openings thereby to introduce the fluid into said piston bore from said intake chamber therethrough when said piston is moved away from said reed valve element and close said first and second intake openings thereby to stop the fluid introduction into the piston bore from said intake chamber when said piston is moved toward said reed valve element, in which said drive unit is arranged to induce a reciprocating movement of said piston in said piston chamber, in which said reed valve element comprises: an elastic arm portion which extends from an inner base portion of said intake valve plate along an imaginary center line; a first valve element part integral with said elastic arm portion and shaped and sized to open and close said first intake opening, said first valve element part being placed on said imaginary center line; and a second valve element part integral with said elastic arm portion and shaped and sized to open and close said second intake opening, wherein said second valve element part is offset relative to said imaginary center line.