The invention describes a vortex finder for a cyclonic separator. The vortex finder includes a plurality of stationary vanes around which incoming air is guided into the vortex finder, in which a side of the vanes facing the incoming air is provided with a protrusion at a stagnation point. The protrusion is shaped so as to guide the incoming air into the vortex finder, and have a concave side following a shape of a neighboring vane, and a rounded top. Further, the protrusion has a height in a range between 70% and 130%, and in a range between 85% and 115% of a gap width between the vanes. The gap width between adjacent vanes increases from an outside to an inside of the vortex finder. A vacuum cleaner that includes a cyclonic separator has such a vortex finder.

The invention describes a vortex finder for a cyclonic separator. The vortex finder includes a plurality of stationary vanes around which incoming air is guided into the vortex finder, in which a side of the vanes facing the incoming air is provided with a protrusion at a stagnation point. The protrusion is shaped so as to guide the incoming air into the vortex finder, and have a concave side following a shape of a neighboring vane, and a rounded top. Further, the protrusion has a height in a range between 70% and 130%, and in a range between 85% and 115% of a gap width between the vanes. The gap width between adjacent vanes increases from an outside to an inside of the vortex finder. A vacuum cleaner that includes a cyclonic separator has such a vortex finder.

One illustrative cyclone separator disclosed herein includes an outer body, an inner body positioned at least partially within the outer body, an internal flow path within the inner body, the internal flow path having a fluid entrance and a fluid outlet, a first fluid flow channel between the inner body and the outer body, and a re-entrant fluid opening that extends through the outer body and is in fluid communication with the fluid flow channel, wherein the re-entrant fluid opening is positioned at a location upstream of the fluid entrance of the internal flow path in the inner body.

The present invention refers to an accelerating cyclone that separates solid particles, comprising in its general structure a lower conical body (1) (17A and 17B), comprising a lower opening (18), a central cylindrical body (2) immediately above the conical body (1) whose diameter is smaller than the largest diameter of the conical body cone (1), and a third upper, also cylindrical, body (3) of smaller diameter than the diameter of the central cylindrical body (2), comprising a side opening for the acceleration air output (5); where the cylindrical central body (2) allows to accelerate the speed of the solid material particles and is the cyclone pressure chamber; and where said cylindrical central body (2) comprises a side opening for the acceleration air input (8) and at least one duct (9).

The invention relates to a vortex degassing device (1) for a fluid transfer circuit (F1, F2), in particular of a motor vehicle, this device (1) comprising: a first internal chamber (10) connected to a first inlet (11) for a fluid (F1) as well as to a first outlet (12) for a liquid fraction and to a second outlet (13) for a gaseous fraction, a second internal chamber (20) connected to a second inlet (21) for a fluid (F2) as well as to a third outlet (22) for a liquid fraction and to a fourth outlet (23) for a gaseous fraction,
the second chamber (20) being located above the first chamber (10) and the second outlet (13) extending through the second chamber (20) to the level of the fourth outlet (23). The invention also relates to a fluid transfer circuit comprising at least one such device (1) as well as a method for using such a device (1).

A cyclone separation device includes a cyclone chamber for separating dirt from incoming air, a dirt collecting chamber arranged adjacent to the cyclone chamber for collecting dirt particles separated from air, and a dirt duct between the cyclone chamber and the dirt collecting chamber for allowing dirt particles to exit the cyclone chamber into the dirt collecting chamber. To reduce the generation of noise-generating air vortices, the dirt duct has an edge protruding into a direction at an angle to the dirt duct at an exit ridge of the cyclone chamber that is first encountered by the air rotating in the cyclone chamber. Preferably, the edge is formed by a tangential extension of a wall of the cyclone chamber. A vacuum cleaner advantageously includes such a cyclone separation device.

A cyclone separation device includes a cyclone chamber for separating dirt from incoming air, a dirt collecting chamber arranged adjacent to the cyclone chamber for collecting dirt particles separated from air, and a dirt duct between the cyclone chamber and the dirt collecting chamber for allowing dirt particles to exit the cyclone chamber into the dirt collecting chamber. To reduce the generation of noise-generating air vortices, the dirt duct has an edge protruding into a direction at an angle to the dirt duct at an exit ridge of the cyclone chamber that is first encountered by the air rotating in the cyclone chamber. Preferably, the edge is formed by a tangential extension of a wall of the cyclone chamber. A vacuum cleaner advantageously includes such a cyclone separation device.

A particle separator for removing particles from a gaseous stream, the particle separator having a separator body having a centerline axis and a peripheral wall defining a separation chamber, a fluid inlet in fluid communication with the separation chamber, a particle outlet in fluid communication with the separation chamber, a fluid outlet in fluid communication with the separation chamber, and a plurality of angled inlet apertures fluidly coupled between the fluid inlet and the separation chamber. A particulate separation system for removing particles from a gaseous stream, the particulate filtration system having an inlet, an outlet, and a plurality of particle separators located between and in fluid communication with, the inlet and the outlet, wherein each of the plurality of particle separators receives less than about 5 percent by volume of the flow of the gaseous stream entering the inlet.

A component assembly for a space environment includes a main body, and a plurality of main body openings in the main body. Each main body opening has an identical cross-sectional shape. A plurality of inserts are installed to the main body at respective main body openings of the plurality of main body openings. Each insert of the plurality of inserts defines a fluid port for a fluid flow to flow into the main body or out of the main body via the respective main body openings. At least two fluid ports have a different cross-sectional configuration.

A component assembly for a space environment includes a main body, and a plurality of main body openings in the main body. Each main body opening has an identical cross-sectional shape. A plurality of inserts are installed to the main body at respective main body openings of the plurality of main body openings. Each insert of the plurality of inserts defines a fluid port for a fluid flow to flow into the main body or out of the main body via the respective main body openings. At least two fluid ports have a different cross-sectional configuration.