Air-conditioner employing the evaporation of water for a cab of a machine or vehicle

An air-conditioner employing the evaporation of water for cabs of machines, vehicles or the like, comprising a case, means defining a lateral inlet for the air to be treated at one lateral end of the case, and means defining an outlet for the treated air at an opposite end of the case, watertight partition wall means defining an evaporation chamber inside the case and extending up from the bottom of the case for sealing off said inlet from any water which might accumulate in the bottom of the evaporation chamber, means for blowing the air in the case and connected to said inlet, the watertight partition wall means defining at least one blown air inlet orifice which is spaced upwardly away from the bottom of the evaporation chamber and communicates with said inlet, means for connection to a water supply for forming a water mist, which mist-forming means are disposed in the vicinity of and below said orifice and on a side of said partition wall means remote from said inlet so that the mist is encountered by a stream of air issuing from said orifice, said orifice being calibrated at such size relative to the rate of flow of air from the air blown by the blowing means through said inlet that the air stream which issues from the orifice has sufficient speed to constitute an anti-return barrier which opposes the passage of the mist of water back through said orifice toward said air blowing means, and draining means for ensuring that water does not accumulate and stay in the bottom of the evaporation chamber.