Patent ID: 6755630
Filing Date: 2004-06-29
Classification: F04B

Abstract:
An apparatus for compressing a fluid comprising:a cylinder block including a cylinder bore with a predetermined diameter penetrating the cylinder block in a lengthwise direction, at least one fluid suction port penetrating in a direction intersecting with the cylinder bore, and at least a pair of fluid discharge ports, each fluid discharge port having a slot shape with one opening formed at an end portion of the cylinder bore; a piston for reciprocally moving in the cylinder bore of the cylinder block; a discharge valve assembly movably disposed at the cylinder bore in order to selectively open and close the fluid discharge ports of the cylinder block, the discharge valve assembly including a valve piston having a flange for limiting movement of the discharge valve assembly; and a cylinder head defining a discharge chamber communicating with the fluid discharge ports of the cylinder block by being connected with the cylinder block, wherein the fluid is drawn into the cylinder bore as the fluid suction port is selectively opened by the piston reciprocally moving in the cylinder bore and is discharged through the fluid discharge ports, the fluid discharge ports being opened by the movement of the valve piston as the pressure of the fluid in the cylinder bore reaches a predetermined amount.