Device for trapping particles, in particular incandescent particles, in a gas flow comprising: - an outer casing comprising at least one inlet opening through which the gas flow is intended to be introduced and at least one outlet opening arranged downstream of the inlet opening with respect to the flow of the gas flow and by which the gas flow is intended to be evacuated, - a first impact surface, substantially cone-shaped, the cone having a top directed facing the inlet opening, the cone extending at least partially inside the outer casing along a longitudinal direction, - an outlet pipe configured to make it possible for the evacuation of the gas flow outside of the outer casing, the outlet pipe having an inlet end situated in the outer casing downstream of the top of the cone, positioned facing an inner face of the cone, the inlet end having, according to a transversal cross-section, perpendicular to said longitudinal direction, a section lower to that of the largest cross-section of the first impact surface, the inlet end being positioned at a distance from the inner face of the cone such that the gas flow can circulate between the inner face of the first impact surface and the outlet pipe, the outlet pipe being assembled in a sealed manner to the outer casing: - an impact zone arranged inside the outer casing and having a covering portion extending all around the first impact surface and from the first impact surface, so as to form between the first impact surface and said portion for covering a zone for trapping particles, characterised in that the device further comprises a second impact surface, having a transversal cross-section greater than that of the impact zone, extending radially between the outlet pipe and the outer casing and axially between the impact zone and the outlet opening of the outer casing, in that the outer casing and the second impact surface are shaped so as to define between them a passage for the gas flow, such that the gas flow can pass between a longitudinal wall of the outer casing and the second impact surface until reaching a bottom wall of the outer casing, and in that the outlet pipe and an inner face of the second impact surface are shaped so as to define between them an additional passage for the gas flow, such that the gas flow can pass through said additional passage to rise from the bottom wall upstream until reaching the inlet end of the outlet pipe. - an outer casing comprising at least one inlet opening through which the gas flow is intended to be introduced and at least one outlet opening arranged downstream of the inlet opening with respect to the flow of the gas flow and by which the gas flow is intended to be evacuated, - a first impact surface, substantially cone-shaped, the cone having a top directed facing the inlet opening, the cone extending at least partially inside the outer casing along a longitudinal direction, - an outlet pipe configured to make it possible for the evacuation of the gas flow outside of the outer casing, the outlet pipe having an inlet end situated in the outer casing downstream of the top of the cone, positioned facing an inner face of the cone, the inlet end having, according to a transversal cross-section, perpendicular to said longitudinal direction, a section lower to that of the largest cross-section of the first impact surface, the inlet end being positioned at a distance from the inner face of the cone such that the gas flow can circulate between the inner face of the first impact surface and the outlet pipe, the outlet pipe being assembled in a sealed manner to the outer casing: - an impact zone arranged inside the outer casing and having a covering portion extending all around the first impact surface and from the first impact surface, so as to form between the first impact surface and said portion for covering a zone for trapping particles,