Particle-collecting device and vehicle equipped with such a device

A mass transit vehicle comprising a source of suction and a collection device, said collection device comprising a collection channel, a tank, and a protection channel, the tank being configured to contain a liquid, the collection channel being configured to direct an airflow containing particles from the outside of the collection device to the interior of the tank, the airflow successively passing through the collection channel, the tank, and the protection channel, the collection channel, the tank, and the protection channel being configured so that the airflow passes through the liquid, the protection channel being connected to an outlet of the tank, the outlet being disposed above the level of the liquid in the tank, the tank further comprising a first barrier configured to prevent liquid spatters from reaching the outlet of the tank, the first barrier being configured to allow the airflow to pass through the tank from the collection channel to the outlet,

• wherein the protection channel is configured to be connected to a source of suction capable of generating the airflow, the protection channel being configured to direct the flow from the outlet of the tank to the source of suction, the protection channel comprising a condenser configured to condense a vapor of the liquid present within the airflow and to direct the generated condensate from the condenser to the tank,
• wherein the mass transit vehicle further comprises a brake disc and a pad of a brake, and the collection device is connected to the brake disc through the collection channel such that the collection device collects the airflow containing the particles resulting from wear to the brake disc and/or the pad of the brake when the vehicle brakes and the pad of the brake rubs against the brake disc,
• wherein the outlet of the tank is a conduit that connects the tank to the condenser, and the first barrier is disposed between the outlet and the liquid contained in the tank.