Filter and filter cartridge

A filter cartridge for a filter for filtration of a fluid, the filter cartridge comprising:

• a prismatic basic shape comprising a base face and a top face arranged parallel to each other and each having a polygonal basic shape;
• the prismatic basic shape further comprising
• a first lateral face and
• a second lateral face neighboring the first lateral face,
• wherein the first lateral face is an inflow surface and is substantially positioned perpendicular to the neighboring second lateral face;
• the prismatic basic shape further comprising
• a third lateral face that is an outflow surface and is positioned at an angle relative to the first lateral face,
• wherein the angle is greater than 10° and smaller than 80°;
• wherein the polygonal basic shape is a quadrangle and comprises
• a fourth lateral face positioned parallel to and opposite the second lateral face:
• the filter cartridge further comprising:
• a filter cartridge frame;
• a seal arranged in the area of the outflow surface and configured to separate a filter interior into a clean side and a raw side, the seal having a sealing surface extending parallel to the outflow surface;
• wherein the filter cartridge frame has a contact surface configured and adapted to support a support surface of a blade projecting from a housing cover, the contact surface being parallel to the sealing surface;
• wherein the filter cartridge further comprises:
• a filter body;
• a filter cartridge frame supporting the filter body;
• an edge protection disposed on the filter cartridge frame in the area of the inflow surface and circumferentially surrounding externally the filter body,
• wherein the edge protection connects the filter body and the filter cartridge frame detachably or non-detachably to each other.

A filter comprising:

• a filter housing comprising a raw-side area and a clean-side area;
• a main filter cartridge for a filter for filtration of a fluid, the main filter cartridge comprising:
• a prismatic basic shape comprising a base face and a top face arranged parallel to each other and each having a polygonal basic shape;
• the prismatic basic shape further comprising
• a first lateral face and
• a second lateral face neighboring the first lateral face,
• wherein the first lateral face is a main filter cartridge inflow surface and is substantially positioned perpendicular to the neighboring second lateral face;
• the prismatic basic shape further comprising
• a third lateral face that is a main filter cartridge outflow surface and is positioned at an angle relative to the first lateral face,
• wherein the angle is greater than 10° and smaller than 80°;
• wherein the polygonal basic shape is a quadrangle and comprises
• a fourth lateral face positioned parallel to and opposite the second lateral face;
• the main filter cartridge further comprising:
• a filter cartridge frame;
• a seal arranged in the area of the main filter cartridge outflow surface and configured to separate a filter interior into a clean side and a raw side, the seal having a sealing surface extending parallel to the outflow surface;
• wherein the filter cartridge frame has a contact surface configured and adapted to support a support surface of a blade projecting from a housing cover, the contact surface being parallel to the sealing surface;
• wherein the main filter cartridge is configured to be disposed in the filter housing,
• wherein the main filter cartridge comprises
• a main filter cartridge flow direction from the main filter cartridge inflow surface to the main filter cartridge outflow surface, and
• a seal arranged on a sealing surface of the main filter cartridge and configured to fluid-tightly separate the raw-side area and the clean-side area of the filter housing from each other when the main filter cartridge is arranged in the filter housing;
• a secondary filter cartridge arranged downstream of the main filter cartridge in the main filter cartridge flow direction, wherein
• the secondary filter cartridge comprises
• a secondary filter cartridge inflow surface,
• a secondary filter cartridge outflow surface, and
• a secondary filter cartridge flow direction from the secondary filter cartridge inflow surface to the secondary filter cartridge outflow surface;
• wherein the sealing surface is arranged at a slant relative to the main filter cartridge flow direction of the main filter cartridge.