Filter insert for insertion into a mounting structure of a filter unit

Abstract

The invention relates to a filter insert (10, 10a, 10b) for insertion into a receiving structure (50) of a filter unit (100), comprising a filter medium (12) through which a fluid to be filtered can flow, a seal (26) at least partially surrounding the filter medium (12), which can be brought into contact with a sealing surface (60) of the receiving structure (50) by inserting the filter insert (10, 10a, 10b) into the receiving structure (50), and at least one guide contour (18, 18a-18c) which defines an insertion path for at least one guide member (58, 58a-58c) of the receiving structure (50), along which the guide member (58, 58a-58c) can be guided when inserting the filter insert (10, 10a, 10b) into the receiving structure (50), wherein the guide contour (18, 18a-18c) comprises a longitudinal contour area (20, 20a-20c) which defines a longitudinal section of the insertion path along which the guide member (58, 58a-58c) is inserted when inserting the filter element (10, 10a,10b) can be guided into the receiving structure (50) in a main insertion direction (x).

Description

[0001] The invention relates to a filter insert for insertion into a receiving structure of a filter unit, comprising a filter medium through which a fluid to be filtered can flow, a seal at least partially circumferential around the filter medium which can be brought into contact with a sealing surface of the receiving structure by inserting the filter insert into the receiving structure, and at least one guide contour which defines an insertion path for at least one guide member of the receiving structure along which the guide member can be guided when inserting the filter insert into the receiving structure, wherein the guide contour comprises a longitudinal contour area which defines a longitudinal section of the insertion path along which the guide member can be guided in a main insertion direction when inserting the filter insert into the receiving structure.

[0002] The invention further relates to a receiving structure for receiving a filter insert, comprising an insertion area into which the filter insert can be inserted, a sealing surface at least partially circumferential around the insertion area, which can be brought into contact with a seal of the filter insert by inserting the filter insert into the insertion area, and at least one guide element which, when inserting the filter insert into the insertion area, can be guided along an insertion path of the filter insert defined by a guide contour of the filter insert, wherein the guide element is configured to be guided along a longitudinal section of the insertion path in a main insertion direction when inserting the filter insert into the receiving structure.

[0003] Furthermore, the invention relates to a filter unit with a filter insert and a receiving structure into which the filter insert can be inserted.

[0004] Flat insert filters are used in a variety of systems; these filters are inserted into a mounting structure of a filter unit. Complete filters consisting of a filter element and a housing are known, for example, from US 6808547 B2 and KR 101530186 B1, where the filter element is inserted into the housing and pressed against the sealing seat in the housing by means of wedge-shaped elements.

[0005] However, these and other solutions have a comparatively complex design and / or do not offer sufficient sealing compression, which can lead to unintentional leaks.

[0006] The object underlying the invention is therefore to improve the sealing of a slide-in filter.

[0007] The problem is solved by a filter insert of the type mentioned above, wherein the guide contour of the filter insert according to the invention comprises a compression contour area which defines a compression section of the insertion path, along which the guide member can be guided when inserting the filter insert into the receiving structure deviating from the main insertion direction, wherein the seal can be brought into contact with the sealing surface of the receiving structure to form a, preferably circumferential, seal by guiding the guide member along the compression section of the insertion path.

[0008] The longitudinal contour area of ​​the guide contour is preferably straight. The longitudinal section of the insertion path is also preferably straight. The compression section allows the seal of the filter element to be pressed onto the sealing surface of the receiving structure, resulting, for example, in a perpendicular compression of the seal. The compression section of the insertion path, defined by the compression contour area, can have a ramped profile, at least in some sections. The compression section can be designed such that the guide element does not engage within the compression section. Alternatively, the compression section can be designed such that the guide element does engage within the compression section. Depending on the orientation of the receiving structure, the main insertion direction can, for example, lie in a horizontal or a vertical plane.In alternative embodiments, the main insertion direction can also be inclined relative to a horizontal plane or inclined relative to a vertical plane.

[0009] The filter element can be adapted for filtering air. The filter element can have a cuboid shape. The filter medium can be a multiply folded or pleated flat material.

[0010] The filter insert can have a magnetic area, for example a magnetic strip, by which the filter insert can be held magnetically on or in the recording structure.

[0011] In a preferred embodiment of the filter insert according to the invention, at least one guide contour is part of a contour support element that is connected to or supports the filter medium. The contour support element can be fixed laterally to the filter medium; for example, it can be bonded laterally to the filter medium. The filter medium can be pleated, i.e., have a plurality of folds. The lateral edges of the folds can be closed and sealed with an adhesive. The contour support element can also be a support frame that carries the filter medium.

[0012] In another preferred embodiment, the filter insert according to the invention has at least one contour arrangement with several guide contours, which define spaced-apart and / or at least partially parallel insertion paths for spaced-apart guide elements of the receiving structure, along which the guide elements can be guided when the filter insert is inserted into the receiving structure. The guide contours each comprise a longitudinal contour region that defines a longitudinal section of the respective insertion path, along which the respective guide element can be guided in the main insertion direction when the filter insert is inserted into the receiving structure. The longitudinal sections of the insertion paths preferably run parallel to each other.The guide contours each further comprise a crimping contour area, which defines a crimping section of the respective insertion path along which the respective guide element can be guided when the filter insert is inserted into the receiving structure, deviating from the main insertion direction. The crimping sections of the insertion paths preferably run parallel to each other. The filter insert can, for example, have a contour arrangement on only one side, by which the filter insert is guided on one side when inserted into the receiving structure. The filter insert can, for example, have a contour arrangement on each of two sides, by which the filter insert is guided on both sides when inserted into the receiving structure. The filter insert can have one or more contour support parts, wherein the one or more contour support parts can each comprise one or more contour arrangements.

[0013] In a further preferred embodiment of the filter insert according to the invention, the seal is inclined at least partially relative to the main insertion direction. Because the seal is inclined at least partially relative to the main insertion direction, it approaches the receiving structure along the longitudinal section of the sealing surface as the filter insert is inserted. The sealing surface of the receiving structure preferably has the same inclination relative to the main insertion direction as the seal of the filter insert. Alternatively, the seal can run parallel to the main insertion direction, at least partially, on the side of the filter insert on which the at least one guide contour is also located.

[0014] The filter insert according to the invention is further advantageously developed in that the pressing section of the insertion path, defined by the pressing contour area, is designed such that, when an insertion force acting in the main insertion direction is applied, the filter insert is moved in a pressing direction inclined relative to the main insertion direction due to the guidance of the guide member along the pressing section. The guide member is preferably guided along an inclined or curved plane in the pressing section.

[0015] In a further development of the filter insert according to the invention, the compression section of the insertion path, defined by the compression contour area, has an arc-shaped or curved profile at least in some sections. The compression section of the insertion path, defined by the compression contour area, can also have a straight profile. When the filter insert is inserted into the receiving structure, the guide element is first guided along the longitudinal section of the insertion path and then along the compression section of the insertion path. If the compression section of the insertion path has a straight profile, the seal preferably runs at an inclination, at least in some sections, relative to the compression direction. The main insertion direction and the compression direction are also inclined relative to each other.

[0016] In an advantageous embodiment of the filter insert according to the invention, the longitudinal section of the insertion path defined by the longitudinal contour area is longer than the compression section of the insertion path defined by the compression contour area. The longitudinal section of the insertion path defined by the longitudinal contour area has at least two, four, or six times the length of the compression section of the insertion path defined by the compression contour area.

[0017] In a further development of the filter insert according to the invention, the one or more guide contours each comprise an upper guide rib extending above the insertion path and / or a lower guide rib extending below the insertion path. The upper and / or lower guide ribs form a guide path for the guide element, bounded on both sides. The guide ribs act like stiffening ribs and provide increased stability. In particular, if the filter insert has a contour arrangement on only one side, by which the filter insert is guided unilaterally when inserted into the receiving structure, the upper and lower guide ribs can form a T-slot in which a T-shaped guide element is guided.

[0018] The filter element according to the invention is further formed by a support rib that is at least partially circumferential and projects outwards, wherein the seal is arranged on the support rib and / or runs along the support rib. The seal can, for example, be a foam rubber seal. The seal can be bonded to the support rib. The seal can be made of an elastomeric material and / or injection-molded onto the support rib.

[0019] The problem underlying the invention is further solved by a receiving structure of the type mentioned above, wherein the guide member of the receiving structure according to the invention is configured to be guided along a compression section of the insertion path, deviating from the main insertion direction, when the filter element is inserted into the receiving structure, and wherein the sealing surface can be brought into contact with the seal of the filter element to form a, preferably circumferential, seal by guiding the guide member along the compression section of the insertion path. The receiving structure according to the invention is preferably designed to receive a filter element according to one of the embodiments described above. With regard to the advantages and modifications of the receiving structure according to the invention, reference is therefore first made to the advantages and modifications of the filter element according to the invention.

[0020] The sealing surface can be inclined, at least in sections, relative to the main insertion direction. Alternatively, the sealing surface can be parallel to the main insertion direction, at least in sections.

[0021] In a further development of the receiving structure according to the invention, at least one guide element is designed as an inwardly projecting guide pin. The guide pin can have a circular cross-section. Alternatively, the guide element can also have a cross-section in which the cross-sectional width differs from the cross-sectional length. The guide element can, for example, also have an oval cross-section or a cross-section resembling a stadium. The guide element can alternatively be designed as a guide web or as a guide roller. By designing the guide element as a guide web with an elongated cross-section, unintentional tilting of the filter element can be avoided. For this purpose, the longitudinal contour area has a contour height that essentially corresponds to the height of the guide element. When the guide element is guided along the guide contour, tilting of the filter element is thus effectively prevented.

[0022] Furthermore, a receiving structure according to the invention is preferred, which comprises at least one link arrangement with several guide elements. When the filter element is inserted into the insertion area, the several guide elements can be guided along insertion paths of the filter element, which are defined by guide contours of the filter element and spaced apart from one another. The receiving structure can, for example, have a link arrangement on only one side, by which the filter element is guided on one side when inserted into the receiving structure. Alternatively, the receiving structure can, for example, have a link arrangement on each of two sides, by which the filter element is guided on both sides when inserted into the receiving structure.

[0023] In a further development of the receiving structure according to the invention, the guide elements are arranged at intervals from one another in the insertion direction and / or perpendicular to the insertion direction. The guide elements have, for example, a longitudinal distance and / or a vertical distance from one another.

[0024] In another preferred embodiment, the receiving structure according to the invention includes a locking element configured to hold the filter element in an operating position in which the filter element is inserted into the receiving structure and the seal of the filter element is in contact with the sealing surface of the receiving structure, and / or to exert a clamping force on the filter element when the filter element is in the operating position. The locking element can be movable and lockable in a locking position in which it holds the filter element in the operating position and exerts a clamping force on the filter element. Sufficient sealing compression is ensured by the clamping force. The locking element can be a pivotable locking flap. Alternatively, the locking element can be a fixable housing cover.

[0025] The problem underlying the invention is further solved by a filter unit of the type mentioned above, wherein the filter element of the filter unit according to the invention is designed according to one of the embodiments described above. Alternatively or additionally, the receiving structure of the filter unit according to the invention is designed according to one of the embodiments described above. With regard to the advantages and modifications of the filter unit according to the invention, reference is therefore made to the advantages and modifications of the filter element according to the invention and the advantages and modifications of the receiving structure according to the invention.

[0026] Preferred embodiments of the invention are explained and described in more detail below with reference to the accompanying drawings. These show: Fig. 1 a filter insert according to the invention in a perspective view; Fig. 2 the in the Fig. 1 filter insert shown in a side view; Fig. 3 a filter unit according to the invention during the insertion of a filter insert into a receiving structure in a perspective view; Fig. 4 those in the Fig. 3 filter unit shown in the Fig. 3. Insertion state shown in a side sectional view; Fig. 5 that are in the Fig. 3 filter units shown in one compared to the Fig. 3 more advanced insertion state in a perspective representation; Fig. 6 who are in the Fig. 5 filter unit shown in the Fig. 5. Insertion state shown in a side sectional view; Fig. 7 who are in the Fig. 5. Filter unit shown with fully inserted filter insert in a perspective view; Fig. 8 who are in the Fig. 7 filter unit shown in the Fig. 7. Insertion state shown in a side sectional view; Fig. 9 another filter unit according to the invention during the insertion of a filter insert into a receiving structure in a perspective view; Fig. 10 that are in the Fig. 9. Filter unit shown with fully inserted filter insert in a perspective view; Fig. 11 a further filter unit according to the invention during the insertion of a filter insert into a receiving structure in a lateral sectional view; Fig. 12 who are in the Fig. 11. Filter unit shown with fully inserted filter element in a side sectional view; Fig. 13 a filter unit according to the invention comprising two filter inserts in a perspective view; Fig. 14 the recording structure of the in the Fig. 13 filter units shown in a perspective view; Fig. 15 a filter insert that is in the Fig. 13 filter units shown in a perspective view; Fig. 16 who are in the Fig. 13. Filter unit shown during the insertion of a filter insert into the recording structure in a side sectional view; Fig. 17 who are in the Fig. 16 filter units shown in a comparison to the Fig. 16 more advanced insertion state in a lateral sectional view; and Fig. 18 who are in the Fig. 16. Filter unit shown with fully inserted filter insert in a side sectional view.

[0027] The Fig. 1 and Fig. Figure 2 shows a filter insert 10 for insertion into a receiving structure 50 of a filter unit 100.

[0028] The filter element 10 comprises a filter medium 12 through which a fluid to be filtered can flow. The fluid to be filtered can be, for example, a gas or gas mixture, in particular air. The filter medium 12 is pleated and therefore has a plurality of folds.

[0029] The filter medium 12 is supported by a contour support part 14 designed as a support frame. The contour support part 14 has a contour arrangement 16a on a first long side and a second contour arrangement 16b on a second opposite long side.

[0030] Contour arrangements 16a and 16b each comprise three guide contours 18a-18c. The guide contours 18a-18c of the respective contour arrangements 16a and 16b are spaced apart from one another and define insertion paths for spaced-apart guide elements 58a-58c of the receiving structure 50, along which the guide elements 58a-58c can be guided when the filter insert 10 is inserted into the receiving structure 50. The insertion paths defined by the guide contours 18a-18c run parallel to each other in sections.

[0031] The guide contours 18a-18c each comprise a longitudinal contour area 20a-20c along which the respective guide element 58a-58c can be guided in a main insertion direction x when the filter insert 10 is inserted into the receiving structure 50. The longitudinal sections of the insertion paths defined by the guide contours 18a-18c run parallel to each other.

[0032] The guide contours 18a-18c each further include a crimping contour area 22a-22c, which defines a crimping section of the respective insertion path, along which the respective guide member 58a-58c can be guided when inserting the filter insert 10 into the receiving structure 50, deviating from the main insertion direction x.

[0033] The contour support part 14 further comprises a circumferential support web 24, which extends inclined along the side surfaces with respect to the main insertion direction x. The support web 24 extends at an angle of inclination α to the main insertion direction x. In the illustrated embodiment, the angle of inclination α is approximately 10°. In other embodiments, the angle of inclination α can be in a range between 5° and 45°. A circumferential seal 26 extends along the underside of the support web 24. The seal 26 can be brought into contact with a sealing surface 60 of the receiving structure 50 by inserting the filter element 10 into the receiving structure 50. Specifically, the seal 26 can be brought into contact with the sealing surface 60 of the receiving structure 50 to form a circumferential seal by guiding the guide elements 58a-58c along the compression sections of the insertion path defined by the compression contour areas 22a-22c.

[0034] The Fig. Figures 3 to 8 show the insertion of a filter insert 10 into a receiving structure 50 of a filter unit 100.

[0035] The receiving structure 50, connected to a connecting pipe 52, has an insertion area 54 into which the filter element 10 can be inserted. Link assemblies 56a, 56b are located on the walls of the receiving structure 50 that laterally define the insertion area 54. Each link assembly 56a, 56b comprises three guide elements 58a-58c. The guide elements 58a-58c are inwardly projecting guide pins. The guide elements 58a-58c of the respective link assemblies 56a, 56b are spaced apart from one another in the insertion direction x and perpendicular to the insertion direction x.

[0036] The guide elements 58a-58c of the link arrangement 56a are guided by the guide contours 18a-18c of the contour arrangement 16a. The guide elements 58a-58c of the link arrangement 56b are guided by the guide contours 18a-18c of the contour arrangement 16b.

[0037] The Fig. 3 and Fig. Figure 4 shows that when the filter insert 10 is inserted in the main insertion direction x, which in this case is a horizontal direction, the guide members 58a of the member arrangements 56a, 56b are first inserted into the guide contours 18a of the contour arrangements 16a, 16b.

[0038] When the filter insert 10 is inserted further in the main insertion direction x, the guide members 58a are moved along the longitudinal section of the insertion path defined by the longitudinal contour areas 20a.

[0039] During the further insertion, the guide elements 58b are first inserted into the guide contours 18b and then the guide elements 58c are inserted into the guide contours 18c.

[0040] The Fig. 5 and Fig. Figure 6 shows an insertion state in which the guide elements 58a-58c have already passed the longitudinal contour areas 20a-20c of the respective guide contours 18a-18c and are located in the transition area between the longitudinal contour areas 20a-20c and the compression contour areas 22a-22c. In this state, the circumferential seal 26 of the filter element 10 is already in close proximity to the sealing surface 60 of the receiving structure 50. To bring the seal 26 of the filter element 10 into contact with the sealing surface 60 of the receiving structure 50, the filter element 10 is now moved in a direction other than the main insertion direction x.

[0041] The Fig. 7 and Fig. Figure 8 shows that the compression contour areas 22a-22c of the guide contours 18a-18c, which are inclined relative to the longitudinal contour areas 20a-20c, enable the filter insert 10 to be lowered and thus bring the seal 26 and the sealing surface 60 into contact.

[0042] The receiving structure 50 has a lockable locking element 62 designed as a flap, by means of which the filter element 10 is held in the operating position in which the filter element 10 is fully inserted into the receiving structure 50 and the seal 26 of the filter element 10 is in contact with the sealing surface 60 of the receiving structure 50. The locking element 62 also exerts a contact force on the filter element 10, which presses the seal 26 onto the sealing surface 60. The contact force exerted by the locking element 62 on the filter element 10 acts in the main insertion direction x. The locking element 62, designed as a locking flap, can be locked in the locking position shown, in which the locking element 62 holds the filter element 10 in the operating position and exerts a contact force on the filter element 10.

[0043] The Fig. 9 and Fig. Figure 10 shows the insertion process of another filter element 10 into another recording structure 50. Unlike the ones in the Fig. In the filter inserts shown in Figures 1 to 8, the seal 26 no longer runs along the outer long sides of the filter insert 10 on the outside of the guide contours 18a-18c, but rather on the inside of the guide contours 18a-18c. The seal 26 of the filter inserts is located in the Fig. 9 and Fig. 10 concealed. The arrangement is chosen such that the seal 26 is in contact with the circumferential sealing surface 60 of the receiving structure 50 when the filter insert 10 is fully inserted.

[0044] The contour arrangements 16a, 16b of the contour carrier part 14 each have three guide contours 18a-18c in which the guide members 58a-58c of the member arrangements 56a, 56b of the receiving structure 50 can be guided.

[0045] The Fig. 11 and Fig. Figure 12 shows a filter unit 100 in which the contour carrier part 14, designed as a support frame for the filter medium 12, has on each of its outer long sides only a guide contour 18 with a longitudinal contour area 20 and a compression contour area 22.

[0046] The receiving structure 50 therefore has only one guide member 58 on each of the walls laterally delimiting the insertion area 54, which is guided by the respective guide contour 18. Unintentional tilting of the filter element 10 is prevented by the fact that the guide members 58 are designed as guide webs with an elongated cross-section. Since the contour height 28a of the longitudinal contour areas 20 essentially corresponds to the height of the guide members 58, tilting of the filter element 10 when the guide members 58 are guided along the guide contours 18 is effectively prevented.

[0047] In order to allow the filter insert 10 to be moved in a direction different from the main insertion direction x to bring the seal 26 of the filter insert 10 into contact with the sealing surface 60 of the receiving structure 50, the crimping contour areas 22 have a different contour height 28b, which essentially corresponds to the width of the guide members 58.

[0048] The Fig. Figure 13 shows a filter unit 100, which is designed as a so-called V-rack. The filter unit 100 has two filter inserts 10a, 10b, which are inserted into the mounting structure 50. The locking element 62 is, in this case, a screwed-on plate that acts as a housing cover and presses the filter inserts 10a, 10b into the mounting structure 50.

[0049] The Fig. Figure 14 shows that the receiving structure 50 has two insertion areas 54a, 54b. The insertion areas 54a, 54b are laterally bounded by wall segments of the receiving structure 50, these wall segments having opposing link arrangements 56a, 56b, each with two guide elements 58a, 58b. The guide elements 58a, 58b are inwardly projecting guide pins.

[0050] The Fig. Figure 15 shows the filter insert 10a. The filter insert 10a comprises two contour support parts 14a and 14b. Contour support part 14a is located on a first outer long side of the filter medium 12. Contour support part 14b is located on a second outer long side of the filter medium 12. The contour support parts 14a and 14b can, for example, be glued to the side of the filter medium 12.

[0051] The contour carrier part 14a has a contour arrangement 16a with two guide contours 18a, 18b. The contour carrier part 14b, arranged on the opposite side of the filter medium 12, comprises a contour arrangement 16b with two guide contours 18a, 18b.

[0052] The guide contours 18a, 18b each have a longitudinal contour area 20a, 20b and a compression contour area 22a, 22b.

[0053] The filter insert 10b also has a front surface 30 on the end face.

[0054] The Fig. Figures 16 to 18 show the insertion of the filter insert 10b into the insertion area 54b of the receiving structure 50. When the filter insert 10 is inserted in the main insertion direction x, the guide elements 58a are first inserted into the guide contours 18a. Subsequently, the guide elements 58b are inserted into the guide contours 18b. Fig. Figure 16 shows that the orthogonal of the front surface 30 is inclined relative to the main insertion direction x.

[0055] The Fig. Figure 17 shows an insertion state in which the guide elements 58a, 58b have reached the transition area between the longitudinal contour areas 20a, 20b and the compression contour areas 22a, 22b of the guide contours 18a, 18b. By further pressing down the filter insert 10b in the main insertion direction x, the circumferential seal 26 of the filter insert 10b is brought into contact with the sealing surface 60 of the receiving structure 50.

[0056] Through the in the Fig.Figure 18 shows that the securing element 62, designed as a cover plate, holds the filter elements 10a, 10b in the operating position in which the filter elements 10a, 10b are fully inserted into the receiving structure 50 and the seals 26 of the filter elements 10a, 10b are in contact with the sealing surfaces 60 of the receiving structure. Furthermore, the securing element 62 exerts a contact force on the filter elements 10a, 10b when the filter elements 10a, 10b are in the operating position. Reference sign 10, 10a, 10b filter inserts 12 Filter medium 14, 14a, 14b Contour carrier parts 16a, 16b Contour arrangements 18, 18a-18c Guide contours 20, 20a-20c Longitudinal contour areas 22, 22a-22c Grouting contour areas 24 support bridge 26 Seal 28a, 28b Contour heights 30 front surface 50 Recording structure 52 Connection piping 54, 54a, 54b Insertion areas 56a, 56b Arrangement of links 58, 58a-58c Leaders 60 sealing surface 62 Safety element 100 filter units x Main insertion direction α Angle of inclination QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 6808547 B2

[0004] KR 101530186 B1

[0004]

Claims

[1] Filter insert (10, 10a, 10b) for insertion into a receiving structure (50) of a filter unit (100), with - a filter medium (12) through which a fluid to be filtered can flow; - a seal (26) which extends at least partially around the filter medium (12) and which can be brought into contact with a sealing surface (60) of the receiving structure (50) by inserting the filter insert (10, 10a, 10b) into the receiving structure (50); and - at least one guide contour (18, 18a-18c) which defines an insertion path for at least one guide member (58, 58a-58c) of the receiving structure (50), along which the guide member (58, 58a-58c) can be guided when the filter insert (10, 10a, 10b) is inserted into the receiving structure (50), wherein the guide contour (18, 18a-18c) comprises a longitudinal contour region (20, 20a-20c) which defines a longitudinal section of the insertion path, along which the guide member (58, 58a-58c) can be guided in a main insertion direction (x) when the filter insert (10, 10a, 10b) is inserted into the receiving structure (50), characterized byin that the guide contour (18, 18a-18c) comprises a pressing contour region (22, 22a-22c) which defines a pressing section of the insertion path, along which the guide member (58, 58a-58c) can be guided deviating from the main insertion direction (x) when the filter insert (10, 10a, 10b) is inserted into the receiving structure (50), wherein the seal (26) can be brought into contact with the sealing surface (60) of the receiving structure (50) to form a, preferably circumferential, seal by guiding the guide member (58, 58a-58c) along the pressing section of the insertion path. [2] Filter insert (10, 10a, 10b) according to claim 1, characterized by , the at least one guide contour (18, 18a-18c) is a component of a contour carrier part (14, 14a, 14b) connected to the filter medium (12) or carrying the filter medium (12). [3] Filter insert (10, 10a, 10b) according to claim 1 or 2, characterized byat least one contour arrangement (16a, 16b) with a plurality of guide contours (18, 18a-18c) which define insertion paths for spaced-apart guide members (58, 58a-58c) of the receiving structure (50) that are spaced apart from one another and / or at least partially parallel, along which insertion paths the guide members (58, 58a-58c) can be guided when the filter insert (10, 10a, 10b) is inserted into the receiving structure (50). [4] Filter insert (10, 10a, 10b) according to one of the preceding claims, characterized by that the seal (26) is inclined at least in sections relative to the main insertion direction (x). [5] Filter insert (10, 10a, 10b) according to one of the preceding claims, characterized bythat the pressing section of the insertion path defined by the pressing contour area (22, 22a-22c) is designed such that the filter insert (10, 10a, 10b) is moved in a pressing direction inclined relative to the main insertion direction (x) when an insertion force acting in the main insertion direction (x) is applied due to the guidance of the guide member (58, 58a-58c) along the pressing section. [6] Filter insert (10, 10a, 10b) according to one of the preceding claims, characterized by that the pressing section of the insertion path defined by the pressing contour area (22, 22a-22c) has an arcuate or curved course at least in sections. [7] Filter insert (10, 10a, 10b) according to one of the preceding claims, characterized bythat the longitudinal section of the insertion path defined by the longitudinal contour area (20, 20a-20c) is longer than the pressing section of the insertion path defined by the pressing contour area (22, 22a-22c). [8] Filter insert (10, 10a, 10b) according to one of the preceding claims, characterized by that the one or more guide contours (18, 18a-18c) each comprise an upper-side guide web running above the insertion path and / or a lower-side guide web running below the insertion path. [9] Filter insert (10, 10a, 10b) according to one of the preceding claims, characterized by an at least partially circumferential and outwardly projecting support web (24), wherein the seal (26) is arranged on the support web (24) and / or runs along the support web (24). [10] Receiving structure (50) for receiving a filter insert (10, 10a, 10b), in particular a filter insert (10, 10a, 10b) according to one of the preceding claims, with - an insertion area (54, 54a-54c) into which the filter insert (10, 10a, 10b) can be inserted; - a sealing surface (60) which extends at least partially around the insertion area (54, 54a-54c) and which can be brought into contact with a seal (26) of the filter insert (10, 10a, 10b) by inserting the filter insert (10, 10a, 10b) into the insertion area (54, 54a-54c); and - at least one guide member which, when the filter insert (10, 10a, 10b) is inserted into the insertion area (54, 54a-54c), can be guided along an insertion path of the filter insert (10, 10a, 10b) defined by a guide contour (18, 18a-18c) of the filter insert (10, 10a, 10b), wherein the guide member (58, 58a-58c) is designed to be guided along a longitudinal section of the insertion path in a main insertion direction (x) when the filter insert (10, 10a, 10b) is inserted into the receiving structure (50), characterized byin that the guide member (58, 58a-58c) is designed to be guided along a pressing section of the insertion path deviating from the main insertion direction (x) when the filter insert (10, 10a, 10b) is inserted into the receiving structure (50), wherein the sealing surface (60) can be brought into contact with the seal (26) of the filter insert (10, 10a, 10b) to form a, preferably circumferential, seal by guiding the guide member (58, 58a-58c) along the pressing section of the insertion path. [11] Receiving structure (50) according to claim 10, characterized by that the at least one guide member (58, 58a-58c) is designed as an inwardly projecting guide pin. [12] Receiving structure (50) according to claim 10 or 11, characterized byat least one link arrangement (56a, 56b) with a plurality of guide links (58, 58a-58c) which, when the filter insert (10, 10a, 10b) is inserted into the insertion area (54, 54a-54c), can be guided along insertion paths of the filter insert (10, 10a, 10b) which are predetermined by guide contours (18, 18a-18c) of the filter insert (10, 10a, 10b) and spaced apart from one another. [13] Receiving structure (50) according to claim 12, characterized by that the guide members (58, 58a-58c) are arranged spaced apart from one another in the main insertion direction (x) and / or perpendicular to the main insertion direction (x). [14] Receiving structure (50) according to one of claims 10 to 13, characterized bya securing element (62) which is designed to hold the filter insert (10, 10a, 10b) in an operating position in which the filter insert (10, 10a, 10b) is inserted into the receiving structure (50) and the seal (26) of the filter insert (10, 10a, 10b) is in contact with the sealing surface (60) of the receiving structure (50) and / or to exert a contact force on the filter insert (10, 10a, 10b) when the filter insert (10, 10a, 10b) is in the operating position. [15] Filter unit (100), with - a filter insert (10, 10a, 10b); and - a receiving structure (50) into which the filter insert (10, 10a, 10b) can be inserted; characterized by that the filter insert (10, 10a, 10b) is designed according to one of claims 1 to 9 and / or the receiving structure (50) is designed according to one of claims 10 to 14.

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