The invention relates to a device for cleaning of enclosed spaces (1) by means of a sprayed liquid. The device comprises an outer unit (2) situated outside the enclosed space (1) and an inner unit (3) situated within the enclosed space (1). The outer unit (2) comprises a drive device (4). Said inner unit (3) comprises at least one flushing pipe (5a) and at least one spray head (6), to which spray head (6) at least one spray nozzle (7a-b) is fitted. The spray head (6) is connected rotatably to the flushing pipe (5a). The flushing pipe (5a) comprises at least one rotatable element (8a) which communicates with, and is caused to rotate by, said drive device (4) and therefore causes the spray head (6) with spray nozzle (7a-b) to rotate so that liquid sprayed out from at least one nozzle (7a-b) during rotation sweeps over the inside of the enclosed space (1). Said liquid flows both within said flushing pipes (5a-b) and in at least two flow directions to a free end (10) of a flushing pipe (5a-b), at which free end (10) a spray head (6) is connected.