| 摘要 |
<p>The present invention refers to an arrangement for cleaning of an intake air filter (1) in a ventilation unit (2) comprising e.g. a heat exchanger, which ventilates a space (3) with indoor air, e.g. a hotel room, said air is sucked in through said intake air filter (1), on which dust/particles (4) from said space (3) after a period of time are gathered on an intake side (5) of the intake air filter (1), said intake side (5) is turned directly towards the space (3) and sometimes indirectly towards a screen (6), provided in connection to said intake air filter (1) in a predetermined distance (7) from the intake side (5). Within said distance (7) at least one blow-off nozzle (8) is provided, which is connected to a separate intake air fan (15), which sucks in air (9) being outside said space (3) and outside the ventilation unit (2) through a hose or tube (16) for blowing the sucked- in air (9) through the blow-off nozzle (8) out over the intake side (5) of the intake air filter (1) in order to remove the dust /particles (4) from the intake side (5) and/or the screen (6) and allowing said dust/particles (4) to fall out from the ventilation unit (2) and into said space (3).</p> |
