There is disclosed a separator having a first separator and a matrix separator. The first separator caters to an air-oil mixture having a first oil concentration and the matrix separator caters to an air-oil mixture having a second oil concentration being less than the first oil concentration. The matrix separator is disposed at least partially concentrically within the first separator. A wall is disposed radially between the first and second separators. A radial passage extends through the wall. An air-oil mixture outlet of the first separator is fluidly connected to an air-oil mixture inlet of the matrix separator via the radial passage. At least one passage extends radially outwardly from the matrix separator across the first separator. The at least one passage fluidly connects the matrix separator to an environment outside the air-oil separator. A method of removing oil from an air-oil mixture is also disclosed.

A substrate processing apparatus according to an aspect of the present disclosure includes a substrate rotating unit, a gas-liquid separator, and an exhaust route. The substrate rotating unit is configured to hold and rotate a substrate. The gas-liquid separator is provided so as to surround an outer circumference of the substrate rotating unit to separate gas and liquid droplets. The exhaust route is provided so as to surround an outer circumference of the gas-liquid separator and discharges the gas separated by the gas-liquid separator.

A substrate processing apparatus according to an aspect of the present disclosure includes a substrate rotating unit, a gas-liquid separator, and an exhaust route. The substrate rotating unit is configured to hold and rotate a substrate. The gas-liquid separator is provided so as to surround an outer circumference of the substrate rotating unit to separate gas and liquid droplets. The exhaust route is provided so as to surround an outer circumference of the gas-liquid separator and discharges the gas separated by the gas-liquid separator.

A dust separator including a top member having a top member having an inlet port arranged to supply dust-laden air and an outlet port arranged to remove clean air, the top member having a lower portion configured as a lip and having a radius which equals diameter of the inlet port, and a dust separator plate, housed within the lip, having a passage with at least one opening arranged to remove the dust from within the top member.

A cyclone assembly for a surface cleaning apparatus has a first cyclonic cleaning stage having a first end moveable between a closed position in which a first stage cyclone chamber and a first stage dirt collection chamber are closed and an open position in which the first stage cyclone chamber and the first stage dirt collection chamber are open, and a second cyclonic cleaning stage having a second end moveable between a closed position in which a plurality of second stage cyclone chambers and at least one second stage dirt collection chamber are closed and an open position in which the second stage cyclone chambers and the second stage dirt collection chamber are open.

A particle collection device for an engine is provided. The particle collection device having: an inlet for directing air towards a first member having a first orifice located therein; and a second member having a second orifice located therein, the second orifice being aligned with the first orifice and wherein the second member and the second orifice are spaced from the first member and the first orifice by a first distance, and wherein the particle collection device is located in the engine.

A particle separator is provided with a passage with a plurality of baffles arranged extending from a top plate through a bottom surface; the baffles spaced to define a sinuous flow path therebetween from an inlet side to an outlet side. Each of the baffles provided with a cavity area open to the inlet side, the cavity area extending longitudinally along the baffles and through the bottom surface; the baffles provided in rows, successive rows offset horizontally to align an interval between the baffles in each of the rows with the cavity of the baffles of the next row. The baffles retractable out of the passage, through the top plate.

A gas-liquid separator includes an inlet pipe and an inner pipe. The inlet pipe receives a swirling flow generating ribbon, and includes an exhaust port through which a separated gas flows out and a drain port through which a separated liquid flows out. The outer diameter of the inner pipe is smaller than the inner diameter of the inlet pipe. An end of the inner pipe is inserted into the exhaust port and is open at a location downstream of the swirling flow generating ribbon. A terminal end of the swirling flow generating ribbon includes a first terminal edge and a second terminal edge. The first and second terminal edges connect a first terminal end point, a second terminal end point, and a middle terminal end point.

The invention relates to a gas liquid separator, for separating liquid droplets from a gas flowing generally in a main gas flow direction through the gas liquid separator. The gas liquid separator comprises a plurality of plates, mutually parallel and spaced apart to form a flow channel there between. Each plate having a plurality of corrugations wherein at least one of the corrugations has an extrados wing profile shaped camber.

A surface cleaning apparatus has an upstream air treatment member and a downstream cyclonic cleaning stage that includes a plurality of cyclones in parallel. Each cyclone has a cyclone axis of rotation, a first end, an axially spaced apart second end, a sidewall extending between the first and second ends, an air inlet, an air outlet, and a sideways dirt outlet. The surface cleaning apparatus also includes a dirt collection chamber and a dirt collection plenum.