The present invention relates to an air cleaner for removing air pollutants from an air stream, for instance such as the cleaning exhaust/intake gas of an amusement machine, said air cleaner comprising a filter device including at least one filter layer (4a, 4b) held by a filter holder (5) in said airflow substantially perpendicular to a main flow direction thereof and including a plurality of preferably stick-shaped filter elements (6) neighbouring each other. In accordance with the present invention, the filter device has no closed surrounding along the circumference of the filter layers, but provides for an open side along at least a portion of the periphery of the filter layer. At least one circumferential side section (7, 8) of the filter layer parallel to or tangential to the longitudinal axis of an outermost filter element is formed as an open side free of flow control elements surrounding the filter layer. Contrary to the prior art where the filter layer is usually enclosed in a tubular flow channel, the present invention avoids such flow-control-elements for guiding the air stream through the filter layer and/or preventing the airflow from diverging away from the filter layer, wherein in particular the filter layer, at its open side, is dispensed with flow-control-elements such as flow guiding surfaces, flow channel walls, fences or housing walls surrounding the filter layer.

In some examples of this technology, a vehicle is disclosed that includes a fuel cell exhaust system for routing of fuel cell byproducts of the vehicle. The vehicle includes at least two fuel cells. Each of the at least two fuel cells have an exhaust port through which byproducts of fuel cell operation flow. The vehicle includes at least two outlet couplers respectively coupled, at a first end, to the exhaust port of each of the fuel cells. The vehicle includes at least two water separators respectively coupled, at an inlet end, to a second end of each of the at least two outlet couplers. The vehicle includes at least two vertical exhaust pipes respectively coupled to a top side of each of the at least two water separators. The water separators separate water from steam produced by the fuel cells.

The invention relates to a separation device (10) for separating drops and particles from a gas stream (42) having a directional component facing upward in a substantially vertical direction, wherein the separation device (10) contains at least one separator stage (14) that comprises at least one separator layer (34) having a plurality of elongated separator elements (66) arranged parallel to each other, and wherein the separator elements (66) of the at least one separator stage (14) are arranged inclined in their longitudinal orientation relative to the horizontal direction in a first region in at least one direction of inclination, and wherein the separation device (10) has a rinsing apparatus by means of which a rinsing liquid can be applied to at least some of the inclined arranged separator elements (66), and wherein the bottom end regions in a vertical direction of the separator elements (66) of at least one separator stage (14) open into a collection basin (28) arranged in the gas stream (42), and wherein the collection basin (28) has a valve (52) in a bottom region (68) which controls an outlet opening (70) and can be brought into an open position releasing the outlet opening (70) and into a closed position at least partially closing the outlet opening (70).

The invention relates to a separation device (10) for separating drops and particles from a gas stream (42) having a directional component facing upward in a substantially vertical direction, wherein the separation device (10) contains at least one separator stage (14) that comprises at least one separator layer (34) having a plurality of elongated separator elements (66) arranged parallel to each other, and wherein the separator elements (66) of the at least one separator stage (14) are arranged inclined in their longitudinal orientation relative to the horizontal direction in a first region in at least one direction of inclination, and wherein the separation device (10) has a rinsing apparatus by means of which a rinsing liquid can be applied to at least some of the inclined arranged separator elements (66), and wherein the bottom end regions in a vertical direction of the separator elements (66) of at least one separator stage (14) open into a collection basin (28) arranged in the gas stream (42), and wherein the collection basin (28) has a valve (52) in a bottom region (68) which controls an outlet opening (70) and can be brought into an open position releasing the outlet opening (70) and into a closed position at least partially closing the outlet opening (70).

An installation in a gas flow channel includes a first layer of rod-shaped elements positioned at a distance from one another along a plane transverse to a direction of gas flow and a second layer of rod-shaped elements offset relative to the first layer. The second layer of rod-shaped elements is positioned at a distance from one another along the plane transverse to the direction of gas flow. The of rod-shaped elements extend across the gas flow channel. The second layer is structured to move relative to the first layer to define at least one of: (i) one or more additional operating positions; and (ii) an out-of-phase position.

An installation in a gas flow channel includes a first layer of rod-shaped elements positioned at a distance from one another along a plane transverse to a direction of gas flow and a second layer of rod-shaped elements offset relative to the first layer. The second layer of rod-shaped elements is positioned at a distance from one another along the plane transverse to the direction of gas flow. The of rod-shaped elements extend across the gas flow channel. The second layer is structured to move relative to the first layer to define at least one of: (i) one or more additional operating positions; and (ii) an out-of-phase position.