Washing unit, planar washing machine and method

A planar washing machine (1) for washing separate planar textile products (23),

• wherein the washing machine (1) comprises:
• a standing body (3) configured to be mounted on a floor;
• a feed opening (4) for feeding the textile product (23) into the washing machine (1);
• transfer means (8) for transferring (B) the textile product (23) in the washing machine (1) in a feed direction (y);
• at least one washing unit (WU) for washing the textile product (23) inside the washing machine (1);
• and wherein the at least one washing unit (WU) is configured to be driven in a reciprocating manner in a transverse direction (x) relative to the feed direction (y), whereby the at least one washing unit (WU) is moved (A) between longitudinal edges (22) of the textile product (23);
• wherein
• the washing unit (WU) comprises a frame (12), at least two rotating suction heads (13, 13a-13d) and at least one washing nozzle (14) for feeding washing liquid and being located between the at least two rotating suction heads (13);
• and the at least one washing nozzle (14, 14a, 14b) is immovable relative to the frame (12) of the washing unit (WU);
• the washing unit (WU) comprises two rows (21a, 21b) of rotating suction heads (13) transverse to the feed direction (y), each row (21) comprising two rotating suction heads (13) that are adjacent to one another, whereby a total number of rotating suction heads is four;
• between the two rotating suction heads (13) of each row (21) that are adjacent to one another is a gap provided with at least one washing nozzle (14);
• and
• the rotating suction heads (13) of each row (21) that are adjacent to one another are rotated (R) into opposite directions relative to each other so that their direction of rotation is towards the gap.