Patent ID: 7931718

Claim:
An oil mist separator comprises, a body; an air intake unit; a filtering unit; a container being formed in the body; a first spacer and a second spacer being formed and piled in an inner layer of the container to form an exhaust chamber; a filtering chamber; an oil collection chamber being formed from top to bottom in the container; a plurality of first thru holes being formed and passing through the first spacer; a plurality of second thru holes, in a same amount of the plurality of the first thru holes, being symmetrically positioned and passing through the second spacer; at least one first via communicating with the exhaust chamber and passing through outside of the body; the air intake unit being an air blower and being provided with at least one air inlet and at least one air outlet communicating with the filtering chamber; the filtering unit lying in the filtering chamber of the body and comprising a plurality of centrifugal dust collectors; the amount of the plurality of centrifugal dust collectors being equivalent to the amount of the first thru holes of the first spacer; each of the plurality of the centrifugal dust collectors being provided with a hollow duct; one end of each of the hollow duct being forward convergent to form a convergent portion and the end of the convergent portion is formed with a mouth; another end of the hollow duct being covered with a lid; a hollow nozzle being positioned axially along the hollow duct and passing through the lid; the two ends of the hollow nozzle being respectively formed into a guidance inlet and a guidance outlet; the guidance inlet lying in the convergent portion; one side of the body being formed with a prolonged portion in parallel with a central axis of the body; a flowing passage communicating with the hollow duct and being formed in the prolonged portion; a flowing port being formed at a free end of the prolonged portion; the end of the convergent portion of the centrifugal dust collector being connected to a first thru hole of the first spacer; a bitter end of the nozzle being connected to a second thru hole of the second spacer; the body comprising a housing; the housing covering a top side of the exhaust chamber to form a container chamber where the air intake unit is contained; one first thru hole of the plurality of the first thru holes being formed and passing through a surface of the housing and communicating with the air inlet of the air intake unit; one second thru hole of the plurality of second thru holes communicating with the exhaust chamber and passing through outside of the body and being connected to the air outlet of the air intake unit; a third thru hole being formed and passing through the second spacer of the body; and a hollow first air duct connecting the one second thru hole and the third thru hole.