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US-12618442-B2 - Filtration system with collector tray

US12618442B2US 12618442 B2US12618442 B2US 12618442B2US-12618442-B2

Abstract

Disclosed is a system for capturing braking particles from a friction braking system, which includes a vacuum source, a pneumatic circuit which connects the friction braking system to the vacuum source, and a particle filtration system located on the pneumatic circuit and including a support and a filter which is mounted on the support and which, during operation, becomes clogged with particles, preferentially on the surface. The capture system further includes a storage container which is able to receive particles that become detached from the filter.

Inventors

  • Loïc Adamczak
  • ADRIEN MAISTRE

Assignees

  • TALLANO TECHNOLOGIE

Dates

Publication Date
20260505
Application Date
20211029
Priority Date
20201112

Claims (20)

  1. 1 . A capture system for capturing braking particles from a friction braking system, the capture system comprising: a pneumatic circuit which connects said friction braking system to the atmosphere; a vacuum source disposed on said pneumatic circuit; a filtration system for said braking particles which is disposed on said pneumatic circuit, the filtration system comprising a support, and exactly one filter mounted on said support, the filter being configured to become clogged by said particles during operation; and a storage container configured to receive said particles which become detached from said filter, the storage container having an emptying port which is closed during operation by a plug, the emptying port being configured to be opened in order to empty the particles from the storage container.
  2. 2 . The capture system according to claim 1 , further comprising an unclogging device for said filter that is able to cause said particles to fall into said storage container.
  3. 3 . The capture system according to claim 2 , wherein said unclogging device is a vibrator configured to cause said filter to vibrate.
  4. 4 . The capture system according to claim 3 , wherein said unclogging device comprises a generator of an air flow that passes through said filter.
  5. 5 . The capture system according to claim 4 , wherein said generator is the vacuum source.
  6. 6 . The capture system according to claim 5 , wherein said storage container and said support form a closed space.
  7. 7 . The capture system according to claim 4 , wherein said storage container and said support form a closed space.
  8. 8 . The capture system according to claim 3 , wherein said storage container and said support form a closed space.
  9. 9 . The capture system according to claim 2 , wherein said unclogging device comprises a generator of an air flow that passes through said filter.
  10. 10 . The capture system according to claim 9 , wherein said generator is the vacuum source.
  11. 11 . The capture system according to claim 10 , wherein said storage container and said support form a closed space.
  12. 12 . The capture system according to claim 9 , wherein said storage container and said support form a closed space.
  13. 13 . The capture system according to claim 2 , wherein said storage container and said support form a closed space.
  14. 14 . The capture system according to claim 2 , wherein said storage container is removable from said support, a face of the storage container which is open to an outside when the storage container is detached from the support, is capable of being closed by a cover, the cover being hinged to a sidewall of the storage container.
  15. 15 . The capture system according to claim 1 , wherein said storage container and said support form a closed space.
  16. 16 . The capture system according to claim 1 , wherein said storage container is removable from said support, a face of the storage container which is open to an outside when the storage container is detached from the support is configured to being closed by a cover.
  17. 17 . The capture system according to claim 1 , wherein said filter extends mainly within a plane which is horizontal.
  18. 18 . The capture system according to claim 1 , wherein said filter extends mainly within a plane which forms, with a horizontal plane, a non-zero angle β which is less than or equal to 90°.
  19. 19 . The capture system according to claim 1 , wherein said storage container comprises a closure mechanism which prevents the particles from coming into contact with an external operator.
  20. 20 . The capture system according to claim 1 , wherein said vacuum source is disposed on the part of said circuit which connects said braking system to said filtration system.

Description

This application is the U.S. national phase of International Application No. PCT/EP2021/080210 filed Oct. 29, 2021, which designated the U.S. and claims priority to FR Patent Application No. 2011583 filed Nov. 12, 2020, the entire contents of each of which are hereby incorporated by reference. The present invention relates to a system for capturing braking particles from a friction braking system, which comprises a vacuum source, a pneumatic circuit which connects said friction braking system to the atmosphere, the vacuum source being located on the pneumatic circuit, and a particle filtration system which is located on the pneumatic circuit and which comprises a filter which becomes clogged with particles during operation, preferentially on the surface. Such friction braking systems can be fitted to road or rail vehicles. Such friction braking systems can also be fitted to stationary rotor machines such as wind turbines or industrial machines. In such systems, a vacuum source is provided (for example a suction turbine driven by a motor) which is connected by a pneumatic circuit to the friction braking system, as well as a filter for collecting particles which are emitted by the braking system. The pneumatic circuit continues downstream from the vacuum source and leads to the atmosphere. The filter is placed upstream of the vacuum source, and prevents particles from passing through the vacuum source and being released into the atmosphere. This filter can also be placed downstream of the vacuum source, in which case it also prevents the release of particles into the atmosphere. Such a filter collects particles through its entire volume (i.e. through its entire thickness). However, the pressure drop from these filters increases as particles and dust are deposited inside the filter and on the surface. Eventually the pressure drop across the filter becomes too great for air to flow through. This is called filter clogging. Replacement of the filter is then necessary. This replacement requires a maintenance operation, and additional costs. Such a filter is described in document US 2002/112458. One solution to overcome this problem is to remove dust from the filter regularly, before it clogs, in order to extend its service life. With this in view, it is advantageous to use a surface filter, i.e. a filter which clogs preferentially or even solely on its outermost layer (outermost layer upstream relative to the direction of the air flow). These are filters comprising, for example, a layer of PTFE (Polytetrafluoroethylene) or of cellulose nanofibers on the surface. In effect, dust on the surface of the filter comes off more easily than dust stored inside the filter. The operation of dust removal (referred to as unclogging) from the filter is facilitated. However, during periods of operation of the system of equal duration, the amount of particles that can be retained by such filters is less than the storage capacity of filters which collect particles throughout their entire volume. The problem therefore arises of removing these particles so that the filter continues to operate optimally and has a longer service life. DESCRIPTION OF THE INVENTION The present invention aims to remedy these disadvantages. The invention aims to provide a system for capturing braking particles from a friction braking system, in which the filter provides optimized efficiency and service life. This object is achieved due to the fact that the capture system further comprises a storage container which is capable of receiving the particles which become detached from the filter. By means of these arrangements, the particles stopped by the filter are regularly stored in a separate area of the filter. The filter is thus regularly unclogged and retains its filtration capacity. Maintenance of the filter is also facilitated since the particles are removed by regularly emptying the storage container. Advantageously, the capture system further contains an unclogging device for the filter that is able to cause the particles to fall into the storage container. The particles are thus regularly detached from the filter, which extends the service life of the filter and therefore of the capture system. For example, this unclogging device is a vibrator which is able to cause the filter to vibrate. For example, this unclogging device comprises a generator of an airflow that passes through the filter. For example, this generator is the vacuum source. Advantageously, the storage container and the support form a closed space. The particles accumulated in the filter and the particles contained in the storage container thus cannot escape into the atmosphere. Advantageously, the storage container is removable from the support. The storage container can thus be emptied of the particles that have accumulated in it, and then reassembled with the support. For example, the filter extends mainly within a plane P which is horizontal. For example, the filter extends mainly