Filter device, in particular fuel filter or oil filter

A filter device for filtering a fluid, the filter device comprising:

• an annular particle filter elongated in the direction of a central axis and circumferentially enclosing the central axis;
• wherein axial is a direction parallel to the central axis;
• wherein radial is a direction transverse to the central axis;
• wherein the annular particle filter has a raw side face where fluid enters the annular particle filter and a radially separated clean side face where purified fluid exits the particle filter and axially opposing end faces;
• an annular water separating element arranged in a flow path downstream of the particle filter;
• wherein the water separating element circumferentially surrounds the particle filter at a radial spacing;
• wherein an open inner annular space is defined by and between the particle filter and the water separating element;
• wherein an outer annular space is defined by and between the water separating element and a filter housing;
• wherein a radially exterior side of the particle filter forms the raw side face;
• and
• a radially inner side of the particle filter forms the clean side face;
• wherein the fluid that has been purified in the particle filter flows out axially through the interior of the particle filter to exit axially from the particle filter.