A passive phase separator includes an input conduit including an inlet through which multi-phase flow enters the input conduit and a gas conduit formed at an angle from the input conduit. A liquid removal chamber is formed in line with the input conduit. The gas conduit is closer to the inlet than the liquid removal chamber. The liquid removal chamber holds liquid from the multi-phase flow, and the gas conduit carries gas from the multi-phase flow.

A two-stage dust-air separation structure includes a cyclone separator and a spiral dust-air separation device. A first stage separation of dust from air is realized by a cyclone housing, and by arranging a second-stage cyclone barrel 5 inside the cyclone housing and arranging the spiral dust-air separation device at a barrel opening of the second-stage cyclone barrel, the dusty air, after going through the first stage separation, is guided by the spiral dust-air separation device to form, on an inner wall of the second-stage cyclone barrel, an airflow rotating towards the barrel bottom, and the dust in the airflow is driven by a centrifugal force to rotate downwardly to the barrel bottom and be collected in a second-stage dust collecting space, and the air in the rotating airflow is extracted by the negative pressure, thereby realizing a second stage separation of dust from air.

The compressor is inferiorly provided with a discharge nozzle and with shoes which are seated and affixed against a support plate, incorporated to the air-oil reservoir and provided with an admission hole aligned with the discharge nozzle, and with a tubular column, incorporated to the air-oil reservoir and open to the interior of the latter. The air-oil reservoir further presents: an inner housing receiving a thermostatic valve, connected to the interior of the air-oil reservoir and also to the compressor and to an oil radiator, as a separate device, through cold oil outlet and hot oil outlet nozzles of the air-oil reservoir; openings for the direct coupling of an oil filter and of an air-oil separating filter; and an end housing lodging a minimum pressure valve.

A particle separation device to remove particulate matter from an exterior air flow for use with an environmental control system includes a curved airflow path with an inner radius and an outer radius, the curved air flow path to receive the exterior air flow, a particle passage disposed along at least one of the inner radius and the outer radius to receive the particulate matter from the exterior air flow, a circumferential volute to receive the particulate matter from the particle passage, and a duct to transport the particulate matter from the circumferential volute to a downstream region.

A particle separation device to remove particulate matter from an exterior air flow for use with an environmental control system includes a curved airflow path with an inner radius and an outer radius, the curved air flow path to receive the exterior air flow, a particle passage disposed along at least one of the inner radius and the outer radius to receive the particulate matter from the exterior air flow, a circumferential volute to receive the particulate matter from the particle passage, and a duct to transport the particulate matter from the circumferential volute to a downstream region.

A gas-liquid separation device includes a gas-liquid separation chamber in a head cover that defines a valve gear chamber, a partition wall that changes a direction of blow-by gas that flows in the gas-liquid separation chamber, and a blow-by gas suction passage extending from the gas-liquid separation chamber to an intake-side valve gear chamber. The upstream end of the blow-by gas suction passage defines an opening in a vicinity of a bottom wall of the valve gear chamber (intake-side valve gear chamber). The gas-liquid separation device removes an oil mist in the blow-by gas while using a compact and simple gas-liquid separation structure.

A gas-liquid separation device includes a gas-liquid separation chamber in a head cover that defines a valve gear chamber, a partition wall that changes a direction of blow-by gas that flows in the gas-liquid separation chamber, and a blow-by gas suction passage extending from the gas-liquid separation chamber to an intake-side valve gear chamber. The upstream end of the blow-by gas suction passage defines an opening in a vicinity of a bottom wall of the valve gear chamber (intake-side valve gear chamber). The gas-liquid separation device removes an oil mist in the blow-by gas while using a compact and simple gas-liquid separation structure.

An exhaust unit includes a dirty air intake opening, a clean air output opening and an airflow path defined between the dirty air intake opening and the clean air output opening. The exhaust unit further includes an upstream quenching section and a downstream filtering section along the airflow path. The quenching section has a wetting chamber that includes a reservoir having a fill level for a quenching liquid, and a downtube connected over the dirty air intake opening and opening at its end above, and in opposition to, the plane of the fill level.

A separator comprising: a first and second chamber, wherein the chambers are generally vertically disposed and parallel to each other; and the chambers have an upper end and a lower end; and the separator comprises an upper body and a lower body, wherein the upper ends are disposed in communication with the upper body, and the lower ends are disposed in communication with the lower body. Further disclosed is a single-chamber separator including a cooler. The cooler surrounds a portion of the chamber, and includes a coolant inlet disposed on a bottom surface, and a coolant outlet disposed on a top surface, and further includes baffles for directing coolant flow in a back and forth manner inside of the cooler. Also disclosed is a dual-chamber separator including a plurality of filters. The filters are disposed in the chambers in surrounding relationship to the tubes.

A separator comprising: a first and second chamber, wherein the chambers are generally vertically disposed and parallel to each other; and the chambers have an upper end and a lower end; and the separator comprises an upper body and a lower body, wherein the upper ends are disposed in communication with the upper body, and the lower ends are disposed in communication with the lower body. Further disclosed is a single-chamber separator including a cooler. The cooler surrounds a portion of the chamber, and includes a coolant inlet disposed on a bottom surface, and a coolant outlet disposed on a top surface, and further includes baffles for directing coolant flow in a back and forth manner inside of the cooler. Also disclosed is a dual-chamber separator including a plurality of filters. The filters are disposed in the chambers in surrounding relationship to the tubes.