| 20090139694 | Regenerative Heat Exchanger - A regenerative heat exchanger for gas streams in heat exchange with one another, the heat exchange occurring via a buffer continuously immersed in all participating gas streams, which is cleanable by a pivotable blowing arm carrying spray nozzles on its free end, a bearing axis of the blowing arm being situated axially parallel to the flow direction of the gas streams in the area of the buffer and its imaginary extension penetrating the buffer, the buffer forming an axis of symmetry for two blowing arms, lying in a mirror image opposite to one another, each having at least one nozzle each for compressed air and for pressurized water. | 06-04-2009 |