Patent ID: 6702557
Filing Date: 2004-03-09
Classification: F04B

Abstract:
A fluid compressing apparatus for drawing, compressing and discharging a fluid, comprising:a cylinder block having: a cylinder bore of a predetermined diameter penetrating through the cylinder block in a lengthwise direction, a discharge chamber having a diameter larger than the diameter of the cylinder bore, and at least one fluid suction port penetrating in the cylinder block in a substantially perpendicular relation with respect to the cylinder bore, the cylinder block using a certain space thereof that is interconnected with the discharge chamber of the cylinder bore as a fluid discharge port; a piston movably disposed in the cylinder bore of the cylinder block to be linearly reciprocated; a discharge valve assembly having a valve plate disposed to be resiliently biased from the discharge chamber toward the fluid discharge port so as to selectively open or close the fluid discharge port of the cylinder block, wherein the valve plate is able to separate from and float free of the fluid discharge port of the cylinder block, and a supporting plate is disposed in the discharge chamber of the cylinder block at a predetermined distance from the valve plate, the supporting plate having a plurality of fluid passages, and a resilient member disposed between the valve plate and the supporting plate, for resiliently biasing the valve plate toward the fluid discharge port; and a cylinder head disposed at an end of the discharge chamber of the cylinder block, and having a fluid discharge channel interconnected with the discharge chamber, wherein the cylinder bore receives the fluid that is drawn in, as the fluid suction port is selectively opened, by the piston linearly reciprocating within the cylinder bore, and the fluid is discharged through the open fluid discharge port when the valve plate floats from the fluid discharge port due to high pressure of the fluid in the cylinder bore caused by the reciprocating piston.