318results about "Single direction vortex" patented technology

A hand vacuum cleaner comprises a cyclone, a conical pre-motor filter that is positioned rearward of the cyclone and a suction motor. The pre-motor filter has a front end that faces that faces towards the cyclone air outlet. The conical pre-motor filter has an open interior volume, an outer surface, which is an upstream surface of the pre-motor filter, and an inner surface, which is a downstream surface of the pre-motor filter.

An exemplary active recirculation system and method for aerosol collection are disclosed that employ recirculation via one or more active pumps (e.g., peristaltic pumps) to continuously circulate a collection buffer within an aerosol collection frontend to improve the collection efficiency. In using less fluid volume, the exemplary active recirculation system and method increase the concentration of the target particle. A high concentration of particles may be advantageous when detecting pathogens downstream of collection. The aerosol collection frontend connects to a collection reservoir. During a collection cycle, a pump draws the fluid from the collection reservoir and pumps the collected fluid back into the collection front end at a set flow rate.

Certain embodiments of the present disclosure relate to a gas flow valve. The gas flow valve includes a housing configured to receive a flow of gas. The gas flow valve further includes a plunger configured to move between a closed position and one or more open positions within the housing. The gas flow valve further includes a position sensor configured to measure a distance associated with a difference in position of the plunger between the closed position and the one or more open position. The gas flow valve further includes a force sensor coupled to the plunger and configured to measure a force exerted by the plunger in the closed position on a sealing surface.

A cone or cylindrical tube stack with narrow in-between gap circumferential surface swirling cyclone separator according to the present invention, creating swirling flow by flowing along the convex outer surface of the inner-stacked cone or cylindrical tube. The inner wall of the outer-stacked cone or cylindrical tube, which is a concave surface, serves as the wall for collecting fluid with larger or higher density particles that is opposite to the surface for swirling, which is disposed in accordance with the separation movement of larger or higher density particles that centrifuged from swirling by their inertial force. The distance that the particles travel towards the wall for collecting fluid with larger or higher density particles is short due to the narrow swirling and separating gaps, combined with the flow on the convex curved surface of the cone or cylindrical tube walls which pressure drag is low, this results in higher swirling speeds than those on the concave inner surface of conventional cyclone, significantly increasing the inertial force of particles centrifuged away from the swirling. Consequently, the separation efficiency of the cone or tube stack circumferential surface swirling cyclone separator according to the present invention is much higher than that of conventional cyclone separators. Especially in cases where the cyclone fluid separator according to the present invention is equipped with multi-stage separation, where the final stage utilizes multiple small cyclones, and in configurations where multiple cones are stacked and equipped with device for swirling and counter-flow separation, which convex fluid drainage ridges are installed on the wall for collecting fluid with larger or higher density particles, the ridges curving towards the side that the swirling flow flows to, sloping from the downstream edges of the cones or cylindrical tubes towards the upstream edges of the cones or cylindrical tubes, which counter to the swirling flow along the convex curved surface of the outer circumferential surface of cone or cylindrical tube. When working with a reverse swirling system, enabling to recycle multiple separation within the system before the fluid exits the separator, enabling high separation efficiency for separating various types of fluids mixed into emulsion or separating micron-level dust such as PM 2.5 from the air.

Systems and methods involving filtration are disclosed. A filtration device includes a first opening, a second opening, and a vortical filter, the vortical filter comprising a rib. The rib may be configured to generate vortices to keep the filtered particles in suspension and to provide a flow path extending from the first opening to the second opening. The filtration device may filter particle from the fluid by cross-flow filtration along the flow path across a filter media surrounding at least a portion of the circumference of the vortical filter. The filtration device may be effective at filters greater than 90% of microplastics mass when post-filtered to 10 microns when measured using the method of either of Example 1 or Example 2. The filtration device may be effective at filtering particles from the fluid at high flow speeds, such as flow speeds greater than 50 cm / sec or greater than 100 cm / sec.

Systems and methods involving filtration are disclosed. A filtration device includes a first opening, a second opening, and a vortical filter, the vortical filter comprising a rib. The rib may be configured to generate vortices to keep the filtered particles in suspension and to provide a flow path extending from the first opening to the second opening. The filtration device may filter particle from the fluid by cross-flow filtration along the flow path across a filter media surrounding at least a portion of the circumference of the vortical filter. The filtration device may be effective at filters greater than 90% of microplastics by mass when post-filtered to 10 microns when measured using the method of either of Example 1 or Example 2. The filtration device may be effective at filtering particles from the fluid at high flow speeds, such as flow speeds greater than 50 cm / sec or greater than 100 cm / sec.

A method for moving a lifting device includes: in a presetting phase, presetting at least one target position for the lifting device; in a measuring phase, detecting an instantaneous geometry of the arm system; in a selection phase, selecting a target position specified in the presetting phase; in a comparison phase, determining a geometrical deviation between the geometry of the target position selected in the selection phase and the instantaneous geometry detected in the measuring phase; in a generation phase, generating at least one control command on the basis of the geometrical deviation determined in the comparison phase; and in a control phase, performing at least partial movement of the lifting device into the selected target position by actuating the actuators of the arm system with the at least one control command generated in the generation phase.

A surface cleaning apparatus comprising a surface cleaning head, the surface cleaning head comprising a first liquid separation stage comprising a cyclone having a cyclone axis of rotation, a cyclone first end, an axially spaced apart second end, a cyclone air inlet, a cyclone air outlet and an axially extending sidewall wherein a portion of the sidewall comprises a screen and, when the surface cleaning apparatus is in use to clean a floor, the cyclone axis of rotation extends generally horizontally and, a first liquid collection region that is positioned at a lower elevation than the screen.

A vortex particle separator adapted for use with a gas turbine engine includes a vortex tube, a plurality of swirl vanes, and an outlet tube. The vortex tube receives atmospheric air laden with particles. The plurality of swirl vanes are arranged within the vortex tube and separate the atmospheric air into a first flow of air having the particles and a second flow of air that is relatively free of the particles. The outlet tube extends into the vortex tube to define a scavenge passageway between the outlet tube and the vortex tube that receives the first flow of air. The outlet tube defines an intake passageway that receives the second flow of air. The vortex particle separator further includes a layer of material having a low coefficient of restitution on at least one of an interior surface of the vortex tube and a surface of the swirl vanes.

The invention discloses a gas-liquid separator and a method for determining the taper angle of a rotational flow assembly of the gas-liquid separator. The gas-liquid separator comprises a shell and the rotational flow assembly located in the shell. The rotational flow assembly comprises a fixed shaft, blades and a separation cylinder; the separation barrel divides a shell cavity of the shell into an inner cavity and an outer cavity, the outer cavity surrounds the inner cavity, and a main body of the separation barrel is in a big-end-up conical shape; the fixed shaft is located in the middle of the separation cylinder, the blade spirally extends downwards along the inner wall of the separation cylinder, the inner edge of the blade is fixed to the fixed shaft, and the outer edge of the blade is fixed to the separation cylinder; a spiral channel is formed between the blade and the separation cylinder; a first liquid discharge hole is formed in the cylinder wall of the separation cylinder, an inlet of the gas-liquid separator is formed in the top of the shell and communicates with the spiral channel, and an outlet of the gas-liquid separator is connected with a lower port of the separation cylinder. According to the gas-liquid separator, through structural optimization, the rotational flow intensity of downstream gas-liquid two phases can be kept, the adverse effect on gas-liquid separation caused by attenuation of the rotational flow intensity is effectively overcome, and the gas-liquid separation efficiency is improved.

A water separator for use in an environmental control system of an aircraft includes an outer housing having an upstream end, a downstream end, and a longitudinal axis. A vane assembly is arranged within the outer housing and is spaced about the longitudinal axis. The vane assembly defines a plurality of flow channels. At least one flow channel of the plurality of flow channels is located radially outward of another flow channel of the plurality of flow channels. The plurality of flow channels have a spiral-like configuration about the longitudinal axis and a flow length of the plurality of flow channels is equal.

A motor assembly and a surface cleaning device are provided. The motor assembly includes: a housing, the housing including an air outlet and a water outlet; a motor body, arranged inside the housing and configured to provide working power; and a cyclone bracket, arranged between the motor body and the housing and configured to guide a working airflow. The cyclone bracket, the motor body and the housing are substantially coaxially arranged in such a manner that after being discharged from the motor body, the working airflow carrying water vapor is condensed into liquid on an inner side wall of the housing through the cyclone bracket and then the liquid is discharged from the water outlet, while the working airflow not condensed into the liquid is discharged from the air outlet.

A cyclonic particle separator (126) may include a housing (130) including a cylindrical sidewall (132) having a plurality of flow entry ports (134). A cover member (136) closes a first end (138) of the cylindrical sidewall (132), and a mounting member (140) having a flow exit opening (160) defined therethrough is at a second end (142) of the cylindrical sidewall (132). At least one particle exit passage (176) is defined in the housing (130). Each of the plurality of flow entry ports (134) includes a flow directing surface angled to direct a gas flow from upstream of the housing (130) to enter the housing (130) in a tangential direction relative to the cylindrical sidewall (132), causing a cyclone vortex. The cyclone vortex acts to separate particles from the gas flow.

A one-stage water separator device comprises a water separator housing comprising a water separation chamber and a water collection chamber, a water-laden volume flow inlet port defining a water-laden volume flow inlet channel for channeling a water-laden volume flow into the water separation chamber, a water volume flow outlet port defining a water volume flow outlet channel for channeling a water volume flow out of the water collection chamber, a water-unladen volume flow outlet port defining a water-unladen volume flow outlet channel for channeling a water-unladen volume flow out of the water separation chamber, and an immersion tube comprising an immersion tube portion immersed in the water separation chamber and for fluidically connecting the water-unladen volume flow outlet port with the water separation chamber, an axial extension of the immersion tube portion essentially corresponding to an axial transition area between the water separation chamber and the water collection chamber.

The present invention concerns a cyclone filter device for liquids comprising: a filtration chamber (5) extending longitudinally around a vertical axis X, and with respect to which a top (15) and a bottom (20) of said chamber (5) are defined, an inlet (25) to the filtration chamber (5) configured to feed a flow of liquid in swirling motion around the vertical axis X, and arranged at the top of the chamber (5), characterized by the fact that said device comprises : an outlet (30) from the filtration chamber (5), arranged at the top (15) of the chamber (5) and at the vertical axis X, a cone (40), with axis of symmetry coincident with the vertical axis X and arranged vertically below both the inlet (15) and the outlet (30), vertically spaced from both, with the vertex (41) pointing toward the outlet ( 30 ), a section of the chamber (53) vertically below the cone (40).

A cyclonic de-sander for a fluid stream. The cyclonic de-sander includes a pressure vessel, with a fluid inlet configured to deliver the fluid stream into the interior volume of the pressure vessel. The fluid inlet delivers the fluid stream in an eccentric manner, thereby forming a cyclone within the interior volume. The de-sander also includes a vortex tube residing vertically within the pressure vessel. The vortex tube comprises an upper end in fluid communication with the upper end of the pressure vessel, and a lower end in fluid communication with the interior volume. Additionally, the cyclonic de-sander includes a funnel. The funnel resides within the interior volume below the fluid inlet and below the lower end of the vortex tube. The funnel comprises a frusto-conical body configured to gravitationally receive solid particles from the fluid stream and inhibit the travel of solid particles back up the pressure vessel.

A dust container for a vacuum cleaner comprises a vessel, a reed valve, and a filter. The vessel has a longitudinal axis and an annular cross section transverse to the longitudinal axis. The vessel has a first end and a second end, a tangential inlet near the first end, and an axial outlet at the first end. The second end is closed, and the vessel is impervious except for the inlet and the outlet. A vacuum actuated valve biased toward a closed position is positioned to seal the inlet of the vessel, and a filter is positioned in covering relationship with the outlet of the vessel. Dust is trapped within the vessel which can be disposed of as a unit together with the valve and filter and can be replaced with a fresh unit.

A water separator for use in an environmental control system of an aircraft including an outer housing having an upstream end, a downstream end, and a central longitudinal axis. A plurality of vanes are arranged within the outer housing and are spaced about the central longitudinal axis. A plurality of flow channels are formed between the plurality of vanes and the outer housing. The plurality of flow channels have a spiral-like configuration about the central longitudinal axis. At least one ring vane is arranged within the outer housing and extends parallel to the longitudinal axis.

A hand vacuum cleaner comprises a cyclone, a conical pre-motor filter that is positioned rearward of the cyclone and a suction motor. The pre-motor filter has a front end that faces that faces towards the cyclone air outlet. The conical pre-motor filter has an open interior volume, an outer surface, which is an upstream surface of the pre-motor filter, and an inner surface, which is a downstream surface of the pre-motor filter.

The device for reintroducing steam into a volatile liquid comprises a tank (10) for the volatile liquid, a circulation pump (14) and connecting conduits (13, 113, 213) for pumping liquid from said tank (10) through a mixing zone or mixing device (12, 112, 212) for mixing the steam with the liquid, and a conduit (15, 115, 215) for conveying steam from the space above the level of the liquid to said mixing zone or mixing device (12, 112, 212), the mixing zone or mixing device (12, 112, 212) being arranged to ensure a pressure independent of the level of the liquid in the tank (10).

A two-stage water separator device (1; 1') includes a water separator housing (2) including a first-stage water separation chamber (3) and a second-stage water separation chamber (4). The first-stage water separation chamber (3) includes a water-laden volume flow inlet port (8) defining a water-laden volume flow inlet channel (15) for channeling a water-laden volume flow into the first-stage water separation chamber (3), and the second-stage water separation chamber (4) includes a water-unladen volume flow outlet port (9) defining a water-unladen volume flow outlet channel (19) for channeling a water-unladen volume flow out of the second-stage water separation chamber (4), a reversal of flow direction from horizontal to vertical occurring between the water-laden volume flow and the water-unladen volume flow.

A vapor-liquid separator includes a first flow path extending between a fluid inlet and a fluid outlet and including a helical portion, a second flow path extending between and fluidly transferring vapor from the first flow path to the vapor outlet and defining a helical portion, and one or more bridges fluidly coupling the first flow path to the second flow. The helical portion of the first flow path causes a reduction in static pressure and an increase in velocity of a fluid flowing through the first flow path and generates a vapor that flows into the second flow path via the one or more bridges. The vapor received within the second flow path is discharged from the vapor outlet and the fluid flowing through the first flow path is discharged from the fluid outlet.

The vacuum cleaner and fluid separator of the present invention include a vortex generator that generates forced vortices based on the Coanda effect. The generated vortex is a laminar, swirling flow that separates fluid particles into distinct layers. Fluids with large particles or high density swirl in the outer layer, while fluids with small particles or low density swirl in the inner layer, facilitating separation. The separator also includes stacked cones with narrow spaces between them to serve as surface settling zones to promote separation. Multiple cones can be stacked within a limited area, creating multiple surface settling zones. The fluid separator also includes reverse swirl-promoting cones that separate fluids containing larger or denser particles and store them in a fluid storage chamber containing larger particles, and a portion of the fluid swirling in the inner layer is returned to the separation system via a connecting channel. When the portion of the fluid containing the larger or denser particles is drawn from the fluid collection channel, the fluid swirls down through any spaces between the stacked cones to the collection channel for the fluid containing the larger or denser particles, resulting in efficient separation at the surface settling region, i.e., the shroud surface of the stacked cones. The vacuum cleaner according to the present invention is less likely to clog because it has a preliminary separation function that separates large and fibrous impurities before the separation process of the small particle fluid. The highly efficient separation process allows the vacuum cleaner to separate contaminants without the need for additional filter layers and discharge clean air. This means that the suction power of the vacuum cleaner will not decrease due to a clogged filter.

The separator includes an inlet manifold, a throat, and an outlet manifold. The inlet manifold is configured to receive a flow of the mixed gas. The throat is attached to the inlet manifold. The throat separates heavier gas species of the mixed gas from lighter gas species of the mixed gas. The outlet manifold is attached to the throat. The outlet manifold includes an outlet valve and a throttle shaft. The outlet valve includes a conical inlet and a bowl-shaped outlet. The throttle shaft includes a shaft and a conical head. The conical head is disposed within the conical inlet and the shaft extends through the bowl-shaped outlet. The bowl-shaped outlet, the conical inlet, and the conical head are sized and shaped to control the flow of the heavier species through the outlet valve and the flow of the mixed gas through the separator.

A single stage water separator apparatus (1) comprises: a water separator housing (2) comprising a water separation chamber (3) and a water collection chamber (4); a water-carrying volume inflow port (8) defining a water-carrying volume inflow channel (11) for directing a water-carrying volume flow into the water separation chamber (3); a water volumetric flow outlet port (10) defining a water volumetric flow outlet channel (12) for directing a water volumetric flow out of the water collection chamber (4); an unloaded water volume flow outlet port (9) defining an unloaded water volume flow outlet channel (13) for directing an unloaded water volume flow out of the separation chamber (3); and an immersion tube (5) comprising an immersion tube portion (7) immersed in the water separation chamber (3) and for fluidly connecting the unloaded water volume outflow port (9) with the water separation chamber (3).

To provide an improved filter for fluids.SOLUTION: A filter device for removing particles from a fluid according to the present invention comprises: a fluid chamber; and an inlet for fluid, an outlet for filtered fluid and an outlet for particles, each coupled to the fluid chamber. The filter device further comprises a flow directing mechanism for inducing a vortex flow around a vortex axis in the fluid chamber. The filter device further comprises an inlet chamber coupled to the inlet. Therein: the inlet chamber is delimited from the fluid chamber by a wall member; and the inlet chamber comprises an inlet chamber sieve for sieving the fluid upstream from the wall member.SELECTED DRAWING: Figure 9

A wet / dry surface cleaner has a surface cleaning head and an upright section moveably mounted to the surface cleaning head between an upright storage position and a reclined surface cleaning position. A solid and liquid separation stage is removably positionable on the upright section. The solid and liquid separation stage has a solid and liquid collection chamber that has a liquid porous divider provided therein. A liquid collection region is located below the divider and solid material collects on the liquid porous divider. An inlet conduit extends upwardly through a lower wall of the solid and liquid collection chamber and an internal wall partially surrounds an outlet end of the inlet conduit.

A housing for a handheld vacuum cleaner includes a suction opening, a cyclone chamber, and a helical passage. The suction opening is defined in the housing. The cyclone chamber is in fluid communication with the suction opening. The helical passage includes a first end, a second end, and at least one sidewall. The first end is in fluid communication with the suction opening. The second end is in fluid communication with the cyclone chamber. The at least one sidewall extends between the first end and the second end. The at least one sidewall separates the helical passage from the cyclone chamber.