Abstract: A central lubricating station for lubricating one or more machine part(s), having a container base adapted for holding at least two replaceable containers. Each replaceable container holds at least one type of lubricant; and one or more pump(s) is configured for pumping at least one type of lubricant interchangeably from the at least two replaceable containers to the one or more machine part(s); and a motor is configured for driving the one or more pumps.

Abstract: Subject matter of the present invention is a device for the separation of flue gas particles and liquid droplets in the exhaustion of surgical gases during laparoscopic interventions.

Abstract: An inline vortex demister for removing moisture from an air stream is disclosed. In embodiments, the inline vortex demister includes one or more vortex-inducing structures disposed within a tube. In embodiments, the one or more vortex-inducing structures are configured to induce an air stream with a first moisture content into a vortex flow pattern in order to remove a first volume of moisture from the air stream by causing the first volume of moisture to adsorb to an inner tube surface of the tube. In additional embodiments, the inline vortex demister includes a demister element disposed within the tube, wherein the demister element is configured to remove a second volume of moisture from the air stream.

Abstract: An inertial vortex particle scrubber includes a housing having an inlet guide, twin vortex chambers and an outlet. A particle-laden air stream is accelerated as it passes through the inlet guide into the twin vortex chambers where particles are displaced by centrifugal forces toward a wall of the twin vortex chambers. A relatively particle-free air stream is then discharged from the outlet.

Abstract: A device for separating liquid from a gas stream within a liquid injected compressor, said device including a first vessel including a first bottom plate, a first lateral wall comprising an inlet fluidly connected with a compressed gas outlet and a lid including an outlet, the device further including: a first separation means; a second separation means; and a third separation means; whereby the device further includes an inlet channel being in fluid communication with said inlet, said inlet channel including a top panel and a bottom panel, whereby at least said top panel is creating a slope, having the highest point onto the first lateral wall and the lowest point at the opposite end.

Abstract: A surface cleaning apparatus comprises an air treatment member having an air treatment chamber. A moveable member is positioned in the air treatment chamber. A handle is drivingly connected to the moveable member by a driving linkage wherein part of the driving linkage extends through a slot in the sidewall of the air treatment member, whereby the moveable member is longitudinally translatable through at least a portion of the chamber.

Abstract: A surface cleaning apparatus comprises an air treatment member having an air treatment chamber. A moveable member is positioned in the air treatment chamber. A driving assembly is drivingly connected to the moveable member wherein the driving assembly is operable between a stored position is which the surface cleaning apparatus is operable to clean a surface and a cleaned position in which the moveable member has been translated through at least a portion of the chamber, wherein, in the stored position, a portion of the driving assembly is longitudinally spaced from the first and second axially spaced apart ends of the air treatment chamber.

Abstract: An improved air scrubber has an improved, more efficient, more robust impeller and impeller housing for mixing incoming air with water, scrubbing the air with increased efficiency and lower mean time between failures. Also water flow through the system is improved to prevent loss of scrubbing performance and to reduce user workload. In addition to these improvements, the water intake system has been redesigned to use less water, prevent using too much water, and to prevent previously common errors that require users to drain water from the impeller housing.

Abstract: A surface cleaning apparatus comprises an air treatment member having an air treatment chamber. A moveable member is positioned in the air treatment chamber. A driving assembly is drivingly connected to the moveable member wherein an end wall of the air treatment chamber is openable in response to the moveable member being longitudinally translated through at least the portion of the air treatment chamber.

Abstract: A surface cleaning apparatus comprises an air treatment member having an air treatment chamber. A moveable member is positioned in the air treatment chamber. A handle is drivingly connected to the moveable member by a driving linkage wherein part of the driving linkage extends through an opening in an end wall of the air treatment member, whereby the moveable member is longitudinally translatable through at least a portion of the chamber.

Abstract: A surface cleaning apparatus comprises a cyclone with a cyclone air inlet provided at a medial position along the axial length of the cyclone chamber.

Abstract: A surface cleaning apparatus comprises a cyclone with a cyclone air inlet provided at a medial position along the axial length of the cyclone chamber and a dirt collection chamber exterior to the cyclone chamber.

Abstract: A surface cleaning apparatus comprises a cyclone with an external dirt collection chamber and a vertically extending member is provided in the dirt collection chamber.

Abstract: A surface cleaning apparatus comprises a cyclone with a cleaning member axially moveable in the cyclone chamber and a drive handle exterior to the cyclone chamber.

Abstract: A surface cleaning apparatus comprises a cyclone with a cyclone air inlet provided at a medial position along the axial length of the cyclone chamber and at least one vertically extending member is positioned in the cyclone chamber between the cyclone air outlet and the a dirt accumulation end of the cyclone chamber.

Abstract: A water extractor includes an outer duct with an inlet and an outlet, and an inner duct with an inlet and an outlet. The inner duct is positioned in the outer duct. The water extractor further includes a gap between the inner duct and the outer duct. The gap is tapered between a first position and a second position.

Abstract: A gas turbine engine comprising a cyclonic separator provides fluid communication between the compressor section and the turbine section. The cyclonic separator comprises an annular volume receiving a flow of cooling fluid from an inlet and dividing the airflow into a cleaner air outlet and a scavenge outlet. The flow of cooling fluid is provided to the cyclonic separator in a direction tangential to the annular volume such that a cyclonic flow of cooling fluid moves within the annular volume centrifugally separating particles entrained within the airflow to the radial outer area of the annular volume for removal through the scavenge outlet and providing a cleaner airflow to the cleaner air outlet.

Abstract: A combined multi-phase pump and compressor unit and a gas compression system are provided. The combined multi-phase pump and compressor unit functions on a centrifugal principle for transporting liquid and gas from a flow conditioner to a remote multi-phase receiving plant, wherein a rotating separator separates liquid and gas upstream of a compressor part of the combined multi-phase pump and compressor unit, wherein the separated liquid is collected in a rotating annulus in such a way that the liquid is given kinetic energy which is converted to pressure energy in a static system, and wherein the pressurized liquid bypasses the compressor part of the combined multi-phase pump and compressor unit, and then is re-mixed with the gas downstream of the combined multi-phase pump and compressor unit.

Abstract: A vacuum cleaner having a vac-motor and a dust separator for separating out dust particles entrained in an airflow drawn through the separator by the vac-motor. The separator is a multi-stage separator incorporating a cyclonic primary separation stage, a non-cyclonic secondary separation stage which is downstream of the primary separation stage and a cyclonic tertiary stage which is downstream of the secondary stage. In accordance with the invention, the secondary stage includes a flow bend for changing the direction of the airflow thereby to separate out dust particles entrained in the airflow. The vacuum cleaner also includes a primary dust collector for collecting dust particles separated out by the primary separation stage, a secondary dust collector for collecting the dust particles separated out by the flow bend and a tertiary dust collector for collecting dust separated out by the tertiary separation stage.

Abstract: Some embodiments provide a centripetal air or gas cleaning apparatus for removing particulates from air or gas. The apparatus comprises an inlet, housing, impeller, a clean air outlet, and a particulate outlet. The housing has an inner conical surface. The impeller's rotation creates negative pressure towards the inlet that intakes particulate-pervaded air or gas into the housing. The rotation also induces an accelerating force that throws the particulate-pervaded air or gas against the outer walls of the housing. Here, the particulates separate from the air or gas, penetrate a high-pressure zone, and are ejected through the particulate outlet located in the high-pressure zone. The air or gas, having less inertia, deflects away from the high-pressure zone where it is then subjected to a centripetal force that drives the air or gas towards the center of the housing behind the impeller where it is ejected through the clean air outlet.

Abstract: A microreactor device (100) comprises a microcircuit (110) defining a reaction microchamber (112) containing a liquid and reaction medium (114), in which a chemical reaction takes place generating the gas (116), and is characterized in that the device (100) is disposed substantially vertically or inclined, defining an upper part (120) and a lower part (130) of the microchamber, and in that means (150) are provided in the upper part (120) of the said microcircuit for the in situ collection and removal of the gas formed during the reaction.

Abstract: A cyclone separator for separating a fluid into a gas phase and a liquid phase. The cyclone separator includes a vertically oriented vessel with a gas phase outlet at an upper end of the vessel and a liquid phase outlet at a lower end of the vessel; at least one tangentially oriented fluid inlet at the upper end below the gas phase outlet of the vessel; a liquid extractor extracting liquid through the liquid phase outlet at a rate which forms a bulk liquid phase at the lower end of the vessel; and a gas extractor extracting gas through the gas phase outlet. The cyclone separator has at least one flow velocity deflector located at a level in proximity to the bulk liquid-gas interphase which changes the vertical velocity component of a liquid film travelling down the internal wall of the vessel to a horizontally oriented velocity component.

Abstract: A fuel cell system includes a fuel cell stack that generates electricity by an electrochemical reaction using a fuel gas; an insulating first passage member through which produced water that is produced by the electrochemical reaction in the fuel cell stack and off-gas that is discharged from the fuel cell stack pass; a conductive second passage member that is connected to the first passage member; and a produced water flow disrupting portion that is provided on the first passage member and breaks up or stops the flow of the produced water that is introduced from an inside wall of the first passage member to the second passage member.

Abstract: A cyclone separator has individual cyclones each provided with a cell tube with a guide device that causes a gas stream passing through the cell tube to rotate. A particle discharge is positioned perpendicularly to a longitudinal axis of the cyclone separator and discharges particles separated from the gas stream. The discharge direction of the separated particle is perpendicular to the longitudinal axis of the cyclone separator and is oriented toward the particle discharge. The individual cyclones include at least four individual cyclones that are arranged such that a connecting line, connecting of these four individual cyclones those individual cyclones that are neighboring each other at a minimal spacing, respectively, forms a diamond, wherein the sides of the diamond are positioned at an angle of 30 to 60 degrees relative to discharge direction.

Abstract: An inertial separation air precleaner system includes a replaceable insert removably mounted to the precleaner and altering air flow velocity through the precleaner by changing flow area of the flowpath through the precleaner housing. The replaceable insert is replaceable with a different insert for the same precleaner housing, which different insert provides a different flow area through the precleaner housing, enabling a selectable precleaner efficiency vs. restriction trade-off as chosen by a user for a particular application, enabling tuning of precleaner performance by the user.

Abstract: Embodiments of the present invention provide an inlet particle separator for a gas turbine engine having an inlet flow path, a scavenge flow path, a core flow path, and a flow splitter disposed between the scavenge and core flow paths. A plurality of grooves may be disposed about an inner surface of a wall of the separator within the inlet flow path.

Abstract: A water separator reduces a water content of an air stream, which is used in an HVAC unit for a vehicle. The water separator includes a diverter wall and an adjacent wall spaced from the diverter wall to define an air passage. The diverter wall has a terminal end extending into the air passage for changing a direction of the air stream flowing through the air passage to separate water droplets from the air stream to reduce the water content of the air stream. A gutter is coupled to the terminal end of the diverter wall and extends into the air passage. The gutter defines a drainage channel configured to receive the water droplets that form on the diverter wall for preventing the water droplets from reentering the air stream flowing through the air stream passage.

Abstract: A versatile compact air precleaner, air cleaning method and disposable air filter cartridge for air precleaner for separating heavier-than-air particulate debris from debris laden air to provide a clean airflow, wherein a flow path for air passing through a separator chamber of the air precleaner is retroflexed en route to the outlet. A plurality of independently rotatably adjustable housing sections of a housing provide utility with multiple clean air outlet configurations, freedom of direction of ejection of particulate debris from the ejector ports, different inlet configurations, mounting of the precleaner from different sides, accommodation of different sizes of filters, and different clean airflow rate capabilities. A separator chamber end section including the ejector ports is connected to the filter as a removable, disposable air filter cartridge to obviate ejector port clogging with change of filters.

Abstract: A system and methods for separating liquids, aerosols, and solids from a flowing gas stream whereby gas flows through a helical path formed in a separator element. Partially separated gas exits the bottom of the separator element at a generally conical cavity. Clean gas exits through an inner tube that is axially aligned beneath the helical path. Separated materials exit through an annular space between the inner tube and an outer tube. Separation occurs in the helical channels which include radially diverging walls to provide an aerodynamically efficient flow, in a region of high swirl created in a generally conical cavity beneath the separator element, and in a toroidal vortex ring created in the annular space. The area and geometry of the helical path, the conical cavity, and the inner and outer tubes is optimized to provide efficient separation at varying gas flow rates and at varying liquid loads.

Abstract: This invention relates in general to a fixed guard(s)/cap(s) and/or screen(s) apparatus (single and/or double formation) shall effect multiple aspects for example the nacelle and inlet for numerous craft, jets, turbojet, turboprop and turboshaft engines—(Helicopters and other VTOL aircraft) such as power plants or the like. This apparatus contains the rotational system(s) which may be applied to the engine shaft attached apparatus and/or pole that allows the mechanism to function by self-induced movement, without limiting engine thrust. Additional security measures have been introduced to the guard(s), cap(s) and/or screen(s) apparatus, which includes a gaseous intake cavity, centrifuge, chamber, manifold and processes—static free and or purification chamber, and a particle collector without limiting engine thrust.

Abstract: An inline water trap including a filter component and a panel connector configured to interface with a patient gas monitor. In one embodiment the inline water trap indicates to the patient gas monitor that it is in place and that the patient gas monitor may begin intaking and analyzing the filtered patient sample. The inline water trap receives a patient sample and filters water and contaminants from the sample before allowing the remaining gas portion of the sample to pass through to the patient gas monitor, thereby protecting the patient gas monitor from damage. One embodiment of the inline water trap additionally contains an RFID tag to indicate to the patient gas monitor that the correct type of inline water trap is engaged.

Abstract: A system for separating contaminants from an airstream, including a centrifugal fan and housing; a contaminant containment vessel mounted to an outer surface of the housing; and a diverter in the airstream downstream of the fan and within the housing, the diverter being configured to separate a portion of the airstream from a remainder of the airstream, accelerate the portion of the airstream towards the containment vessel, and thereafter guide the portion of the airstream towards the remainder of the airstream. The diverter preferably does not negatively impact the rated performance of the fan, such that a performance of the system is not measurably different than the rated performance of the fan and housing combination. The diverter may accelerate contaminants entrained in the airstream toward the containment vessel, thereby separating the contaminants from the airstream.

Abstract: An oil flow management system reduces the amount of oil directed from an aircraft engine to the environment outside of the aircraft, even when the aircraft is in inverted flight. This decreases the amount of oil that becomes attached to exterior surfaces of the aircraft fuselage. A gaseous mixture including air and oil is directed from the aircraft engine to a separator, which separate the mixture into a gaseous component and an oil component. The oil component is directed from the separator to a reservoir via a unidirectional valve. When in a first orientation, the unidirectional valve allows oil to flow from the separator to the reservoir. However, when in a second orientation, the unidirectional valve blocks oil from flowing from the reservoir to the separator.

Abstract: This filter is used to purify air by removing foreign matters such as liquid droplets contained in the air. A separation unit (23) is formed with a port block (13) and a separation cylinder (20), and the port block is formed with a primary port (11) and a secondary port (12). From the secondary port (12), the air purified by removing the foreign matters in a separation chamber (25) of the separation unit (23) is flowed out. A discharge pipe (37) for guiding the purified air to the secondary port (12) is disposed in a center portion of a swirl flow generating chamber (24). The foreign matters discharged from the discharging port (31) are collected in a collection container (27). In the collection container (27), a baffle plate 51 having a liquid guiding surface (50) is provided. A fin (52) is provided in an outer peripheral portion of the baffle plate (51), and the liquid guiding surface (50) positioned at a center portion of the baffle plate (51) is flat.

Abstract: A device in a pipe has an annular partition spaced radially inwardly from an inner face of the pipe and defining therewith an upstream annular space opening axially upstream of the direction into the pipe such that a secondary gas stream is separated from the primary gas stream along with a liquid film on the inner surface, a downstream annular space larger than the upstream annular space, and a droplet separator opening into the downstream annular space. The separator has a plurality of lamellas, a condensate sump, and a drain, so that the edge film intercepted by the partition into the upstream space passes therefrom into the downstream space and therefrom through the separator such that the liquid of the film flows into the sump and out the drain and the secondary gas stream passes out of the separator.

Abstract: In a multi-stage steam-water separation device and a steam-water separator, a first swirl vane (6) which causes a gas-liquid two-phase flow to rise while swirling is provided in a first riser (5) of a first steam-water separator (2), and a second swirl vane (12) which causes the gas-liquid two-phase flow which has passed through the first swirl vane (6) to rise while swirling at a speed higher than that provided by the first swirl vane (6), is provided in a second riser (11).

Abstract: A versatile compact air precleaner, air cleaning method and disposable air filter cartridge for air precleaner for separating heaver-than-air particulate debris from debris laden air to provide a clean airflow, wherein a flow path for air passing through a separator chamber of the air precleaner is retroflexed en route to the outlet. A plurality of independently rotatably adjustable housing sections of a housing provide utility with multiple clean air outlet configurations, freedom of direction of ejection of particulate debris from the ejector ports, different inlet configurations, mounting of the precleaner from different sides, accommodation of different sizes of filters, and different clean airflow rate capabilities. A separator chamber end section including the ejector ports is connected to the filter as a removable, disposable air filter cartridge to obviate ejector port clogging with change of filters.

Abstract: A versatile compact air precleaner, air cleaning method and disposable air filter cartridge for air precleaner for separating heavier-than-air particulate debris from debris laden air to provide a clean airflow, wherein a flow path for air passing through a separator chamber of the air precleaner is retroflexed en route to the outlet. A plurality of independently rotatably adjustable housing sections of a housing provide utility with multiple clean air outlet configurations, freedom of direction of ejection of particulate debris from the ejector ports, different inlet configurations, mounting of the precleaner from different sides, accommodation of different sizes of filters, and different clean airflow rate capabilities. A separator chamber end section including the ejector ports is connected to the filter as a removable, disposable air filter cartridge to obviate ejector port clogging with change of filters.

Abstract: The invention relates to a separation system comprising a flow inlet (16). The separation system comprises a swirl valve (100), arranged to receive and control the flux of a fluid flow via the flow inlet (16) and to generate a swirling flow, swirling about a central axis (11). The separation system further comprises a separation chamber (40) positioned downstream with respect of the swirl valve (100) to receive the swirling flow from the swirl valve (100), wherein the separation chamber (40) comprises a first and second flow outlet (41, 42). The first flow outlet (41) is positioned to receive an inner portion of the swirling flow and the second outlet (42) is positioned to receive an outer portion of the swirling flow.

Abstract: An inline water trap including a filter component and a panel connector configured to interface with a patient gas monitor. In one embodiment the inline water trap indicates to the patient gas monitor that it is in place and that the patient gas monitor may begin intaking and analyzing the filtered patient sample. The inline water trap receives a patient sample and filters water and contaminants from the sample before allowing the remaining gas portion of the sample to pass through to the patient gas monitor, thereby protecting the patient gas monitor from damage. One embodiment of the inline water trap additionally contains an RFID tag to indicate to the patient gas monitor that the correct type of inline water trap is engaged.

Abstract: A system for separating contaminants from an airstream, including a centrifugal fan and housing; a contaminant containment vessel mounted to an outer surface of the housing; and a diverter in the airstream downstream of the fan and within the housing, the diverter being configured to separate a portion of the airstream from a remainder of the airstream, accelerate the portion of the airstream towards the containment vessel, and thereafter guide the portion of the airstream towards the remainder of the airstream. The diverter preferably does not negatively impact the rated performance of the fan, such that a performance of the system is not measurably different than the rated performance of the fan and housing combination. The diverter may accelerate contaminants entrained in the airstream toward the containment vessel, thereby separating the contaminants from the airstream.

Abstract: Multiple designs and methods for aerodynamic separation nozzles and systems for integrating multiple aerodynamic separation nozzles into a single system are disclosed herein. These aerodynamic separation nozzles utilize a combination of aerodynamic forces and separation nozzle structure to induce large centrifugal forces on the gases that in combination with the structure of the nozzle are used to separate heavier constituents of the process gas from lighter constituents. In some embodiments a number of separation nozzles are combined into a single system suitable for dynamic processing of a process gas. In other embodiments the separation nozzles are temperature controlled to condition the incoming gas to a temperature in order to encourage a phase change in certain constituents of the gas to occur within the nozzle to further enhance separation.

Abstract: A particle separating structure for use with a turbine engine. The particle separating structure includes a main housing, first swirling structure, and second swirling structure. The first swirling structure is provided for swirling cooling fluid passing through a first cooling fluid flowpath defined in the main housing. The second swirling structure is provided for swirling cooling fluid passing through a second cooling fluid flowpath defined in the main housing. The first swirling structure is positionable in at least two positions, a first position allowing cooling fluid to pass through the first cooling fluid flowpath and a second position allowing cooling fluid to pass through the first and second cooling fluid flowpaths. The swirling of the cooling fluid causes particles in the cooling fluid to pass to a particle discharge zone while the cooling fluid passes out of the main housing through a cooling fluid outlet.

Abstract: An inline water trap including a filter component and a panel connector configured to interface with a patient gas monitor. In one embodiment the inline water trap indicates to the patient gas monitor that it is in place and that the patient gas monitor may begin intaking and analyzing the filtered patient sample. The inline water trap receives a patient sample and filters water and contaminants from the sample before allowing the remaining gas portion of the sample to pass through to the patient gas monitor, thereby protecting the patient gas monitor from damage. One embodiment of the inline water trap additionally contains an RFID tag to indicate to the patient gas monitor that the correct type of inline water trap is engaged.

Abstract: A versatile compact air precleaner for separating heaver-than-air particulate debris from debris laden air has a retroflexed flow path through a separator chamber. A motor of a motor-driven fan is located in the flow path downstream from the separator chamber. A plurality of independently rotatably adjustable housing sections of a housing are formed with respective ones of the air precleaner debris laden air inlet, particulate debris ejector ports, clean air outlet, and mounts for mounting the air precleaner to a support to provide utility with multiple clean air outlet configurations, directions of ejection of particulate debris from the ejector ports, inlet configurations, precleaner sides for mounting, and filter sizes. A separator chamber end section including the ejector ports and the filter are connected forming a removable, disposable air filter cartridge which obviates ejector port clogging with change of filters.

Abstract: The present invention is a device that rapidly and effectively separates and collects debris from airflow between a debris source and a vacuum source. The device comprises a first chamber situated above and adjoining a second chamber. The first chamber functions to separate and remove the debris and the second chamber functions to collect the debris. The first chamber is circular in cross-section and comprises an upper portion and a downward and outward sloping sidewall. The upper portion has an output port connected by a first conduit to the vacuum source and the sidewall has an input port connected by a second conduit to the debris source. Air and debris are drawn into the first chamber through the input port by suction created at the output port. The debris is centrifugally forced to the sidewall whereby it is then centripetally forced downward into the second chamber through a peripheral opening between the sidewall and a barrier, while cleaned air is evacuated through the output port.

Abstract: A cyclone for a surface cleaning apparatus has spaced apart and opposed first and second cyclone chamber end walls and a cyclone chamber sidewall extending therebetween. At least one of the first cyclone chamber end wall and the second cyclone chamber end wall is openable so as to provide access to the cyclone chamber. An opening extends along only a portion of the perimeter of the cyclone chamber sidewall and is positioned adjacent the second cyclone chamber end wall, the opening defining the dirt outlet whereby dirt exiting the cyclone chamber via the dirt outlet travels in a generally outwardly direction to an exterior dirt collection chamber.

Abstract: Multiple designs and methods for aerodynamic separation nozzles and systems for integrating multiple aerodynamic separation nozzles into a single system are disclosed herein. These aerodynamic separation nozzles utilize a combination of aerodynamic forces and separation nozzle structure to induce large centrifugal forces on the gases that in combination with the structure of the nozzle are used to separate heavier constituents of the process gas from lighter constituents. In some embodiments a number of separation nozzles are combined into a single system suitable for dynamic processing of a process gas. In other embodiments the separation nozzles are temperature controlled to condition the incoming gas to a temperature in order to encourage a phase change in certain constituents of the gas to occur within the nozzle to further enhance separation.

Abstract: Gas-solids separator comprises a tubular housing, an inlet for introducing a gas-solids mixture at one end of said housing, which inlet is executed such that it imparts a swirl to the gas-solids mixture, a solids outlet opening at the opposite end of said housing, and a co-axially positioned tubular gas outlet conduit placed at an end of said housing, which separator further comprises a vortex stabilizer, comprising a pin placed on a stabilizing plate, in which separator the pin runs along the axis of the tubular housing and in which a passageway is provided through the stabilizer plate and the pin.

Abstract: A compressor incorporated with an oil separator having a separation chamber and communication holes. The separation chamber is placed adjacent to a discharge chamber, has a space formed in the entire inside of the separation chamber, separates oil-containing gas, which is introduced into the separation chamber, into gas and oil by centrifugal separation, allows the separated oil to drop downward, and upwardly extracts the separated gas. The communication holes interconnect the discharge chamber and the separation chamber and introduce the oil-containing gas, coming from the discharge chamber, into the separation chamber. The communication holes are arranged in the separation chamber, in a direction extending from a gas release side to an oil drop side. The structure of an oil separation section is simplified to improve productivity and reduce cost, and a high degree of design freedom of the position of a discharge port is obtained.