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EP0004145A1
Expired / Lapsed
EP
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Fluid/particle separator unit
Assignee: Mellor Fred
•
Filing: 1979-02-21
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Granted: —
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Expires: 1999-02-21
Abstract
Abstract A fluid/particle separator unit (8) comprises a cylindrical chamber (9) having an inlet end (19) substantially closed by an apertured rotor (18) and an outlet (5), opposite the inlet, surrounded by a baffle wall (12) extending coaxially within the chamber. The rotor has vanes (25) projecting into the chamber at an acute angle (β) to the circumferential direction of motion in use and the chamber wall (10) has elongate bleed slits (17). In use in a partide-containing fluid flow, the rotor is rotated so as to oppose the flow through the inlet and separates particles from the fluid, cleansed fluid leaving the chamber through the outlet. In a suction cleaner, the unit is mounted in the cleaner container so as to separate dust particles from air drawn through the cleaner, the dust collecting in the container; the rotor may be driven by a drive shaft (20) coupled to the shaft of the impeller/motor assembly which causes the air flow through the cleaner.
Inventors
- 👤 Fred Mellor
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:33
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/102; B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
92 words
A fluid/particle separator unit for mounting in a flow of particle-containing fluid, characterised in that it comprises a chamber (9) having a fluid inlet (19) and a fluid outlet (5), an impeller rotor (18) cooperating with the inlet and a drive (20) for rotating the rotor, in use of the unit, in a sense to oppose a flow of fluid into the chamber through the inlet (19) ., such that the action of the rotor separates particles from the fluid, fluid having a substantially-reduced particle-concentration leaving the chamber through the outlet (12).
Claim 2
Dependent Claim
92 words
A fluid/particle separator unit for mounting in a flow of particle-containing fluid, characterised in that it comprises a chamber (9) having a fluid inlet (19) and a fluid outlet (5), an impeller rotor (18) cooperating with the inlet and a drive (20) for rotating the rotor, in use of the unit, in a sense to oppose a flow of fluid into the chamber through the inlet (19) ., such that the action of the rotor separates particles from the fluid, fluid having a substantially-reduced particle-concentration leaving the chamber through the outlet (12).
Claim 3
Dependent Claim
26 words
A fluid/particle separator unit according to Claim 1, characterised in that peripheral bleed means (17) are provided for bleeding fluid out from or into the chamber.
Claim 4
Dependent Claim
40 words
A fluid/particle separator unit according to Claim 2, characterised in that the peripheral bleed means include or comprise at least one bleed vent (17) in a wall (10) of the chamber (9) intermediate the rotor (18) and the outlet (5).
Claim 5
Dependent Claim
37 words
A fluid/particle separator unit according to Claim 3, characterised in that each bleed vent (17) is arranged to direct fluid peripherally into the chamber (9) in counterflow to the peripheral velocity of the rotor (18), in use.
Claim 6
Dependent Claim
57 words
A fluid/particle separator unit according to any preceding claim, characterised in that the inlet (19) comprises substantially the whole of a circular end of the chamber opposite a wall (11) containing the outlet (5) and in which the impeller rotor (18) comprises an apertured disc, coaxial with and substantially closing the inlet and rotatable about its axis.
Claim 7
Dependent Claim
32 words
A fluid/particle separator unit according to Claim 5, characterised in that a peripheral portion of theidisc has an axial clearance from the edge of a chamber wall (10) defining the inlet (19).
Claim 8
Dependent Claim
68 words
A fluid/particle separator unit according to Claim 6 , characterised in that the disc has elongate apertures (26) and an elongate vane (25) extending along or adjacent a trailing edge (27) of each aperture (26) with respect to the circumferential direction of motion (A) of the disc in use, each vane (25) projecting into the chamber (9) at an acute angle to the said direction of motion (A).
Claim 9
Dependent Claim
36 words
A fluid/particle separator unit according to Claim 7, characterised in that each vane (25) is substantially planar and inclined at an angle (β) of from 10° to 75 D inclusive to the plane of the disc.
Claim 10
Dependent Claim
56 words
A fluid/particle separator unit according to Claim 8, characterised in that each aperture (26) is substantially rectangular and the said trailing edge (27) thereof is inclined to the radius through its end closer to the disc centre by an angle (oC) of from 0 0 to 7 5 ° inclusive on either side of the radius.
Claim 11
Dependent Claim
72 words
A fluid/particle separator unit according to any of Claims 4 to 9, characterised in that the chamber (9) is substantially cylindrical, the inlet (19) and the outlet (5) being located in opposite circular end walls of the chamber (9), and the or each bleed vent comprises a slot (17) which is elongate in a direction parallel to the axis of the chamber and has a width which extends radially of the chamber.
Claim 12
Dependent Claim
32 words
A fluid/particle separator unit according to Claim 10, characterised in that a cylindrical baffle wall (12) is sealed to the edge of the outlet (5) and extends coaxially within the chamber (9).
Claim 13
Dependent Claim
47 words
A fluid/particle separator unit according to Claim 10, characterised in that a cylindrical gap is defined between a free edge of the baffle wall (12) and the rotor disc, the gap being of substantially the same total area as the cross-sectional area enclosed by the baffle wall.
Claim 14
Dependent Claim
74 words
A fluid/particle separator unit according to any preceding claim, characterised in that the unit (8) is adapted to be mounted in a container (2) having an inlet opening (6) for a fluid to be cleansed of particles, such that the outlet (5) of the chamber (9) communicates with an outlet opening (5) from the container, particles being trapped in the container in use of the unit and cleansed fluid passing through the outlet opening.
Claim 15
Dependent Claim
86 words
A fluid/particle separator unit according to Claim 13, characterised in that it is adapted for mounting in the container (2) of a suction cleaner (1) and the drive for the rotor impeller (18) comprises an extension drive shaft (20) adapted to be coupled . to a drive shaft (20a) of a motor/impeller assembly (3) of the suction cleaner to be driven thereby, the motor/impeller assembly cooperating with the outlet opening (5) of the container (2) to withdraw air from the container through the separator unit (8).
Claim 16
Dependent Claim
73 words
A suction cleaner comprising a container having an inlet opening, an outlet opening, and a motor/impeller assembly arranged to withdraw air from the container through the outlet opening, characterised in that it includes a fluid/particle separator unit (8) according to Claim 13 or Claim 14, mounted within the container (2) such that the outlet ( 5) of the chamber (9) of the separator unit communicates with the outlet opening (5) of the container.
Claim 17
Dependent Claim
120 words
A fluid/particle separator unit for separating particles from a flow of particle-containing fluid, characterised in that it comprises a chamber (9) having an inlet (19) and an outlet (5), a motor/impeller assembly (3) connected to the outlet (5) and arranged to exhaust fluid from the chamber (9) therethrough to create a fluid flow into the chamber through the inlet (19) in use, an impeller rotor (18) cooperating with the inlet (19) and a drive (20, 20a) for rotating the rotor (18) in use of the unit, in a sense to oppose the said fluid flow such that the action of the rotor separates particles from the fluid, fluid having a substantially reduced particle concentration leaving the chamber through the outlet.
Claim 18
Dependent Claim
120 words
A fluid/particle separator unit for separating particles from a flow of particle-containing fluid, characterised in that it comprises a chamber (9) having an inlet (19) and an outlet (5), a motor/impeller assembly (3) connected to the outlet (5) and arranged to exhaust fluid from the chamber (9) therethrough to create a fluid flow into the chamber through the inlet (19) in use, an impeller rotor (18) cooperating with the inlet (19) and a drive (20, 20a) for rotating the rotor (18) in use of the unit, in a sense to oppose the said fluid flow such that the action of the rotor separates particles from the fluid, fluid having a substantially reduced particle concentration leaving the chamber through the outlet.
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