Hollow Filter Element, Filter, and Housing Section of a Filter

A fluid filter comprising:

• a filter housing comprising at least a first housing section and a second housing section, wherein the first and the second housing sections are at least partly separable from one another for opening the filter housing;
• at least one hollow filter element that is exchangeably arranged in the filter housing;
• a retention/carrier system for retaining and/or carrying the at least one hollow filter element in the first housing section of the filter housing at least during installation and/or removal of the hollow filter element in or from the second housing section of the filter housing, wherein the at least one hollow filter element is configured to be joined with or separated from the first housing section and/or the second housing section by a rotational and/or insertion movement relative to a virtual axis;
• wherein the retention/carrier system comprises at least one filter housing-associated retention/carrier device disposed on the first housing section and further comprises at least one filter element-associated retention/carrier device disposed on the at least one hollow filter element;
• wherein the at least one filter element-associated retention/carrier device comprises at least one filter element-associated retention/carrier part extending radially relative to the virtual axis and extending circumferentially over at least a portion of a radially inner circumference of the hollow filter element;
• wherein the at least one filter element-associated retention/carrier device comprises, circumferentially adjacent to the at least one filter element-associated retention/carrier part relative to the virtual axis, one or more through holes extending circumferentially relative to the virtual axis and configured to enable at least one filter housing-associated retention/carrier part of at least one filter housing-associated retention/carrier device of the retention/carrier system to pass through axially;
• wherein the at least one filter element-associated retention/carrier part comprises a tensile face extending circumferentially and radially, wherein the tensile face is located on a side of the at least one filter element-associated retention/carrier part that is facing axially away, relative to the virtual axis, from an end face of the hollow filter element to be facing the first housing section;
• wherein the at least one filter element-associated retention/carrier part, viewed in a defined circumferential direction of the hollow filter element, has a rear side and a front side;
• wherein the one or more through holes include a first through hole adjacent to the rear side of the at least one filter element-associated retention/carrier part;
• wherein a space axially adjacent to the tensile face is connected on the rear side of the at least one filter element-associated retention/carrier part to the first through hole in a way suitable for guiding through the at least one filter housing-associated retention/carrier part.

A first housing section of a filter housing of a filter, wherein the filter housing is configured to be joined to at least one second housing section for sealing off the filter housing and to be separated at least partially from the at least one second housing section for opening the filter housing, wherein the first housing section comprises:

• at least one filter housing-associated retention/carrier device of a retention/carrier system for retaining and/or carrying a hollow filter element in the first housing section at least during installation and/or removal of the hollow filter element in or from the second housing section, wherein the first housing section is configured to be joined with or separated from the hollow filter element and/or the second housing section by a rotational and/or insertion movement relative to a virtual axis;
• wherein the at least one filter housing-associated retention/carrier device comprises at least one filter housing-associated retention/carrier part extending radially relative to the virtual axis and circumferentially over at least a portion of a circumference of the at least one filter housing-associated retention/carrier device;
• wherein the at least one filter housing-associated retention/carrier device comprises, circumferentially adjacent to the at least one filter housing-associated retention carrier part relative to the virtual axis, at least one gap extending circumferentially relative to the virtual axis and configured to enable at least one corresponding filter element-associated retention/carrier part of at least one filter element-associated retention/carrier device of the retention/carrier system to axially pass through;
• wherein the first housing section comprises a bypass valve and wherein the at least one filter housing-associated retention/carrier device is disposed on the bypass valve.