Filter device for fluids

A device for fluids, comprising:

• a filter housing having an inlet connected in fluid communication with a unfiltrate chamber in said filter housing for supplying fluid to be cleaned into said unfiltrate chamber in said filter housing, and having a filtrate outlet;
• a filter element accommodated in said filter housing and having a filter medium separating said unfiltrate chamber from a filtrate chamber by said filter medium, said filtrate chamber being connected in fluid communication with said filtrate outlet for filtrate;
• a first magnetic field generator being disposed within said unfiltrate chamber;
• and
• a first casing having a first adhering surface for ferromagnetic particles deposited thereon by a magnetic force of said first magnetic field generator surrounding said first magnet field generator and extending from a first opening in a housing wall of said filter housing and into said unfiltrate chamber, said first magnetic field generator being removeably accommodated in said first casing allowing said first magnetic field generator to be inserted and at least partially retracted from said first casing, said first casing extending outside said filter element and inside said unfiltrate chamber and extending parallel to said inlet and transverse to said filtrate outlet, said unfiltrate chamber enclosing at least partially said filtrate outlet at a transition point to said filtrate chamber.