US 11,655,865 B2
Separating device and use of the device for separating and collecting brake dust
Nicolas Arnault, Vélizy-Villacoublay (FR); Lucie Riviere, Coulvain (FR); Stephan Pignol, Clinchamps sur Orne (FR); and Florent Collicard, Rennes (FR)
Assigned to Sogefi Filtration, Guyancourt (FR); and TALLANO TECHNOLOGIE, Boulogne Billancourt (FR)
Appl. No. 17/438,071
Filed by Sogefi Filtration, Guyancourt (FR); and TALLANO TECHNOLOGIE, Boulogne Billancourt (FR)
PCT Filed Mar. 4, 2020, PCT No. PCT/HR2020/050428
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2020/183092, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 19 02459 (FR), filed on Mar. 11, 2019.
Prior Publication US 2022/0252117 A1, Aug. 11, 2022
Int. Cl. F16D 65/00 (2006.01); B60T 17/00 (2006.01); B04C 5/08 (2006.01); B04C 5/06 (2006.01)
CPC F16D 65/0031 (2013.01) [B04C 5/08 (2013.01); B60T 17/002 (2013.01); B04C 5/06 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air separation unit provided with a separation device for separating and collecting dust and particles produced by one or more pads of a brake assembly, the separation device comprising:
a casing having an inlet for admitting a flow of air laden with brake dust and particles, and an outlet for discharging purified air, the casing comprising a tubular lateral wall extending around a longitudinal axis and an end wall;
separation means, spaced axially away from the end wall to retain at least some of the brake dust and particles admitted via the inlet;
a trapping zone for trapping the dust and particles separated by the separation means; and
a downstream zone delimited by the separation means in the casing, the downstream zone being situated, at least in part, axially at an opposite end from the inlet and/or from the trapping zone,
wherein the separation means comprise a group of cyclones, housed in the casing and configured to separate dust and particles, as well as water droplets present in the flow of air admitted via the inlet,
wherein in the group of cyclones, each of the cyclones comprises a body that tapers in downward direction, having a lower end opening via a gravity discharge orifice into the trapping zone, the body delimiting a separation chamber,
wherein the group of cyclones comprises:
an axial supply inlet common to the cyclones of the group of cyclones, and provided with a connector for an axial duct allowing the flow of air admitted via the inlet to circulate as far as the group of cyclones from beneath;
a plurality of exhaust stacks each discharging air from a separation chamber and opening into the downstream zone inside the casing; and
an intake manifold having a plurality of tubular branches to distribute the flow of air laden with dust and particles, extending between the axial supply inlet and each respective separation chamber of said cyclones, each of the tubular branches opening radially into a corresponding separation chamber, all the bodies of the cyclones being placed radially distant from the longitudinal axis, between the longitudinal axis and the lateral wall,
and wherein the group of cyclones forms a transverse barrier connected in a fluidtight manner to the axial duct, the transverse barrier and the axial duct preventing a heterogeneous liquid-solid mixture from traveling back up toward the downstream zone during operation of the separation device,
wherein the air separation unit comprises:
at least one filtering element provided with a filter media which extends in the downstream zone inside the casing, delimiting:
an intermediate zone for the circulation of purified air leaving the cyclones, in communication with the exhaust stacks; and
a clean zone in communication with the outlet;
and wherein the air separation unit further comprises deflector means formed between the exhaust stacks and a transverse inlet face for access to the filter media, the deflector means comprising:
passage holes which are offset radially with respect to the exhaust stacks,
and/or concave deflection portions having a concave surface for causing flow of air leaving an exhaust stack to rotate, the concave deflection portions bordering or facing each exhaust stack of the cyclones.