An ejector device comprises a housing (110) having a motive fluid inlet (111) to receive motive fluid, a suction fluid inlet (112) to receive suction fluid and a fluid outlet (113) to output the motive fluid and the suction fluid. The ejector device comprises a nozzle and diffuser assembly (150) configured to fit within the housing (110). The nozzle and diffuser assembly (150) comprises a nozzle (160), a diffuser (170) and a connecting structure (180) connecting the nozzle (160) to the diffuser 170. The connecting structure (180) is configured to permit fluid flow between the nozzle (160) and the diffuser (170). The connecting structure (180) has apertures (182) configured to allow fluid to be drawn into the fluid flow between the nozzle 160 and the diffuser (170).
F04F 5/10 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
F04F 5/14 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
An apparatus (100) comprises an inlet (102) configured to receive a gas from outside the apparatus and a fluid ejector device (110). The fluid ejector device (110) comprises a suction inlet (112) configured to receive the gas, a motive fluid inlet (111) configured to receive a motive fluid and an outlet (113) configured to output an output fluid. An output flow path (115) is connected to the outlet of the ejector (110). The output flow path (115) has an outlet (119) configured to output fluid from the apparatus. A return flow path (116) is connected between the output flow path (115) and the motive fluid inlet (111) of the ejector. The return flow path (116) is configured to tap a portion of the output flow as a source of the motive fluid. The fluid ejector (110) is configured to condense the gas received via the suction inlet (111) to a liquid or a supercritical fluid.
F04F 5/04 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing elastic fluids
F04F 5/54 - Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type
An ejector device comprises a housing (110) having a motive fluid inlet (111) to receive motive fluid, a suction fluid inlet (112) to receive suction fluid and a fluid outlet (113) to output the motive fluid and the suction fluid. The ejector device comprises a nozzle and diffuser assembly (150) configured to fit within the housing (110). The nozzle and diffuser assembly (150) comprises a nozzle (160), a diffuser (170) and a connecting structure (180) connecting the nozzle (160) to the diffuser 170. The connecting structure (180) is configured to permit fluid flow between the nozzle (160) and the diffuser (170). The connecting structure (180) has apertures (182) configured to allow fluid to be drawn into the fluid flow between the nozzle 160 and the diffuser (170).
F04F 5/02 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
F04F 5/04 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing elastic fluids
F04F 5/10 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
F04F 5/14 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
F04F 5/16 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
F04F 5/24 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
An ejector device (1), e.g., for pumping a gas using a liquid motive fluid, has an injector portion (100), and a diffuser portion (50), the injector portion (100) being arranged for injecting a flow of motive fluid from a motive fluid inlet (10) into an inlet section (52) of the diffuser portion (50) thereby to draw a suction fluid from a suction fluid inlet (20) into the inlet section (52) of the diffuser portion (50). The injector portion (100) includes a flow-modifying arrangement with at least one rotational deflector element (104), e.g., three vanes (104V1, 104V2, 104V3) each at a desired twist angle, constructed and arranged to deflect motive fluid into a helical path as it moves over or through the rotational deflector element (104), and at least one baffle element (103), e.g., a baffle plate (103), downstream of the rotational deflector element (104).
F04F 5/42 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow characterised by the input flow of inducing fluid medium being radial or tangential to output flow
F04F 5/04 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing elastic fluids
An ejector device (1), e.g. for pumping a gas using a liquid motive fluid, comprising: an injector portion (100), and a diffuser portion (50), the injector portion (100) being arranged for injecting a flow of motive fluid from a motive fluid inlet (10) into an inlet section (52) of the diffuser portion (50) thereby to draw a suction fluid from a suction fluid inlet (20) into the inlet section (52) of the diffuser portion (50); wherein the injector portion (100) comprises a flow-modifying arrangement comprising: at least one rotational deflector element (104), e.g. comprising three vanes (104V1, 104V2, 104V3) each at a desired twist angle, constructed and arranged to deflect motive fluid into a helical path as it moves over or through the rotational deflector element (104), and at least one baffle element (103), e.g. a baffle plate (103), located downstream of the rotational deflector element (104).
F04F 5/42 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow characterised by the input flow of inducing fluid medium being radial or tangential to output flow
An ejector device (100) for compressing and pumping a fluid, especially a gas, comprises: an injector portion (110), and a diffuser portion (150), the injector portion (110) being arranged for injecting a motive fluid from a motive fluid inlet into the diffuser portion (150) thereby to draw a suction fluid into the diffuser portion (150) from a suction fluid inlet (120), and the diffuser portion (150) including a Venturi portion comprising a converging inlet section (152), a throat section (154) and a diverging outlet section (156), wherein the throat section (154), which is preferably smooth-walled with a uniform diameter along its length, has a length Lt defined by the following equation (I): Lt > x Dt (I), where Dt is the diameter of the said throat section (154) and x is a number (especially an integer) greater than 6, preferably greater than 7, especially a number in the range of from about 10 up to about 50. In embodiments the injector portion (110) of the ejector device (100) additionally comprises a rotational deflector element (180), constructed and arranged to rotate motive fluid as its passes from the motive fluid inlet into the diffuser portion (150), comprising a plurality of helical deflector vanes (182a, 182b, 182c) arranged for imparting helical rotation to the motive fluid as its passes the said vanes (182a, 182b, 182c), each said deflector vane (182a, 182b, 182c) having: a longitudinal length being approximately equal to or less than a diameter of the injector portion (110); and a radial twist angle of greater than approximately 30°, preferably a twist angle in the range of from about 35 or 40 ° up to about 80 or 90 °.
F04F 5/42 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow characterised by the input flow of inducing fluid medium being radial or tangential to output flow
In an aspect of the invention there is provided fluid pump apparatus comprising a plurality of ejectors, the apparatus having at least one motive fluid inlet arranged to supply motive fluid to the apparatus, at least one suction fluid inlet arranged to supply suction fluid to the apparatus and a common discharge outlet from which motive fluid and suction fluid that have passed through the ejectors may be expelled from the apparatus, each ejector having a respective injector portion and a respective diffuser portion, the injector portion being arranged to inject motive fluid from at least one said at least one motive fluid inlet into the diffuser portion thereby to draw suction fluid into the diffuser portion from at least one said at least one suction fluid inlet, the diffuser portion having a Venturi portion, each ejector having a respective flow stabilisation portion downstream of the Venturi portion thereof, the flow stabilisation portion being arranged to stabilise a flow of motive fluid and suction fluid therethrough before the respective flows of fluid through each ejector meet downstream of the ejectors, wherein the flow stabilisation portion comprises a flow stabilisation conduit of substantially constant diameter and a length substantially equal to at least the diameter thereof.
F04F 5/10 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
The matrix arrangement (20) for use in heat transfer and/or cleaning assemblies comprises a sheet (22), the sheet (22) defining a plurality of apertures (68) for the flow of a first fluid therethrough. The arrangement (20) is arranged for the flow of a second fluid over the sheet (22), so that the first and second fluids cross one another for heat transfer and/or cleaning.
F28C 1/04 - Direct-contact trickle coolers, e.g. cooling towers with cross-current only
F28F 25/08 - Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
F28C 3/06 - Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
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