Structure of Variable Oil Pump

Abstract

A variable oil pump includes an inlet connected to supply oil into the housing of the variable oil pump an arc-shaped intake space formed in the housing to be connected to a pumping space between veins mounted on a rotor in the variable oil pump; and a buffer space having a large cross-sectional area than inlet and connected with inlet and intake space, such that it is possible to reduce pulse noise generated in the variable oil pump by reducing intake resistance and vortex which are generated in sucking oil at the intake side of the variable oil pump.

1 . A structure of a variable oil pump, comprising:
 an inlet for supplying oil into a housing of the variable oil pump;   an intake space formed in the housing for connection to a pumping space between veins mounted on a rotor in the variable oil pump; and   a buffer space having a cross-sectional area larger than a cross-sectional area of the inlet and fluidly connected with the inlet and the intake space.   
     
     
         2 . The structure of a variable oil pump as defined in  claim 1 , wherein the intake space has an arc shape, and
 the buffer space houses a spring elastically supporting an outer ring that varies the pumping space together with the veins while changing a eccentric position with respect to the rotor.   
     
     
         3 . The structure of a variable oil pump as defined in  claim 2 , wherein the inlet is fluidly connected to an inside of the housing by a cylindrical passageway,
 the intake space has an arc shape in the longitudinal direction of the cylindrical passageway of the inlet, and   the inlet is connected to the intake space at an outside portion of the arc shape formed by the intake space.   
     
     
         4 . The structure of a variable oil pump as defined in  claim 3 , wherein the arc-shape intake space is disposed both above and under the rotor, and
 the buffer space is connected to both of the upper and lower intake spaces.   
     
     
         5 . The structure of a variable oil pump as defined in  claim 1 , wherein the housing of the variable oil pump is composed of a body disposed above the rotor and a cover disposed under the rotor,
 the a depth of the body allows the vertical height of the rotor can be covered,   the cover is combined with the body such that the inner side of the variable oil pump is made flat,   the lower intake space and the inlet are formed at the cover, and   the cover has an enlarged depression to make a portion of the buffer space by being connected with the lower intake space and the inlet.   
     
     
         6 . The structure of a variable oil pump as defined in  claim 5 , wherein the enlarged depression includes the entire cylindrical cross-section of the inlet and has a shape corresponding to the space formed in the body to dispose the spring.