Pump having at least a delivery device for delivering a fluid and such a delivery device

Abstract

The invention relates to a pump for conveying at least one fluid, comprising: at least one conveying device, the conveying device having at least one conveying chamber (18), at least one dimensionally stable conveying chamber element (20) and at least one elastically deformable conveying element (22), the conveying chamber element (20) at least partially defining the conveying chamber (18), the conveying element (22) together with the conveying chamber element (22) defining the conveying chamber (18), and the conveying element (22) being arranged on the conveying chamber element (22); at least one drive unit (16) for acting on the conveying device; and at least one housing (14) for receiving the conveying device, wherein the housing (14) is formed at least separately from the conveying chamber element (20) of the conveying device, in particular separately from the conveying device as a whole, in particular so that the conveying chamber element (20), in particular so that the conveying device as a whole, can be removed from the housing (14). According to the invention, the conveying chamber element (20) has an outer surface which, when the conveying device is arranged on the housing (14), is connected to the inner surface of the housing (14) in a force-fitting and / or form-fitting manner, in particular, when the conveying device is arranged on the housing (14), the outer surface abuts against the inner surface of the housing (14), wherein the conveying chamber element (20) at least largely surrounds the conveying element (22) along a circumferential direction extending in a plane, wherein the plane extends at least approximately perpendicularly to the drive axis (70) of the drive unit (16).

Description

Technical Field

[0001] The invention relates to a delivery device at least for delivering a fluid and a pump comprising such a delivery device. Background Art

[0002] DE10 2017 104 400 A1 discloses a pump for conveying at least a fluid, the pump comprising at least one conveying device, at least one drive unit for acting on the conveying device, and at least one housing for accommodating the conveying device, the conveying device having: at least one conveying chamber; at least one dimensionally stable conveying chamber element at least partially defining the conveying chamber; and at least one elastically deformable conveying element, which together with the conveying chamber element defines the conveying chamber and is arranged on the conveying chamber element.

[0003] Furthermore, DE 10 2012 023 900 A1 discloses a pump at least for conveying a fluid, wherein the pump comprises at least one conveying device formed as an elastically deformable pump hose, the conveying device having at least one conveying chamber, an elastically deformable conveying chamber element, and at least one elastically deformable conveying element, which together with the conveying chamber element defines the conveying chamber and is arranged integrally with the conveying chamber element, wherein the conveying chamber element is formed from a stronger material than the conveying element but is itself still elastic.

[0004] Furthermore, DE 297 14 484 U1 discloses a pump at least for conveying a fluid, wherein the pump comprises: at least one conveying device having: at least one conveying chamber, at least one dimensionally stable conveying chamber element at least partially defining the conveying chamber, and at least one elastically deformable conveying element, which together with the conveying chamber element defines the conveying chamber and is arranged on the conveying chamber element; at least one drive unit for acting on the conveying device; and at least one housing for accommodating the conveying device, which housing is formed at least separately from the conveying chamber element of the conveying device. Summary of the invention

[0005] In particular, the object of the present invention is to provide a universal pump and / or delivery device with improved performance in terms of advantageous maintainability and / or delivery function. According to the invention, this object is achieved by the features of claim 1, while advantageous configurations and improvements of the invention can be obtained from the dependent claims.

[0006] Advantages of the present invention

[0007] The invention is based on a pump for conveying at least one fluid, the pump comprising at least one conveying device, at least one drive unit and at least one housing. The conveying device has at least one conveying chamber, at least one dimensionally stable conveying chamber element and at least one elastically deformable conveying chamber element. The conveying chamber element at least partially defines the conveying chamber, the conveying element together with the conveying chamber element defines the conveying chamber and the conveying element is arranged on the conveying chamber element. The drive unit is used to act on the conveying device. The housing is used to receive the conveying device, wherein the housing is formed separately from at least the conveying chamber element of the conveying device, in particular separately from the conveying device as a whole, in particular in such a way that the conveying chamber element, in particular the conveying device, can be removed as a whole from the housing.

[0008] It is proposed that the conveyor chamber element has an outer surface which, in the state in which the conveying device is arranged on the housing, is connected to the inner surface of the housing in a force-fitting and / or form-fitting manner and in particular bears against the inner surface of the housing, wherein the conveyor chamber element at least largely surrounds the conveyor element along a circumferential direction extending in a plane, wherein the plane extends at least approximately perpendicular to the drive axis of the drive unit. In the state in which the conveying device, in particular the conveying device as a whole, is arranged in the housing, the outer surface of the conveyor chamber element preferably bears against the inner surface of the housing, in particular at least against the inner surface of the housing lower part of the housing. Preferably, more than 30%, preferably more than 40%, particularly preferably less than 95%, most preferably between 40% and 60% of the total outer surface of the outer surface of the conveyor chamber element bears against the inner surface of the housing, in particular against the inner surface of the housing lower part of the housing. The housing, in particular the housing lower part, preferably comprises a recess in which the conveying device can be arranged, in particular in the recess. The recess of the housing, in particular the recess of the housing lower part, is preferably defined by a collar-shaped extension of the housing interior, in particular the housing lower part interior. The collar-shaped extension extends over less than 360°, in particular allowing an inlet region and an outlet region of the conveying device to be arranged in the housing, in particular in the housing lower part. Preferably, at least in a direction extending at least approximately perpendicularly to the drive axis of the drive unit, the outer face of the conveying chamber element is arranged at a distance relative to the inner face of the housing upper part of the housing. However, it is also conceivable that the housing upper part has a collar-shaped extension, which has a recess for at least partially receiving the conveying chamber element, in particular the conveying device, wherein the outer face of the conveying chamber element abuts against the recess. Other configurations for arranging the conveying device inside the housing that appear meaningful to a person skilled in the art are also conceivable.

[0009] "The unit / device is formed separately from [...] or the element is formed separately from [...]" is to be understood here as meaning in particular that the unit / device or the element can be removed as a whole (in particular non-destructively or without disassembly of individual parts) from, in particular, other elements or other units (for example the housing, in particular at least from the housing lower part or the like of the housing), in particular after disassembly of the housing upper part of the housing or after separation of at least one fastening element for fastening the unit to the element or other units. In particular, the conveying device functions in the state removed from the housing. "Arranged" is to be understood as meaning in particular specially adapted, specially designed and / or specially equipped. By the fact that an element and / or a unit is arranged to perform a specific function, it is to be understood in particular that the element and / or the unit carries out and / or performs this specific function in at least one application and / or operating state. Preferably, the conveying device can be removed from the housing, in particular as a whole, without being disassembled into individual parts of the conveying device. Preferably, at least the conveying chamber element and the conveying element can be removed from the housing together. Preferably, the delivery device, in particular as a whole, can be exchanged for an interchangeable or replacement device after removal, which, with respect to at least one function of the interchangeable or replacement device, at least approximately corresponds to at least one function of the delivery device. Preferably, the pump is provided for use in the food sector, the chemical sector, the pharmaceutical sector, in particular in a batch-compatible manner, in the animal husbandry sector (aquariums, etc.), in the household appliance sector, in the dental hygiene sector, in the vehicle sector, in the medical sector, in the water treatment sector, etc.

[0010] Preferably, the conveying element comprises a base body. In particular, the base body comprises at least one conveying side and at least one actuating side. Preferably, the conveying side of the base body is arranged on a side of the base body facing away from the actuating side of the base body. In particular, the conveying side forms the outer side of the base body. Preferably, the actuating side forms the inner side of the base body. Preferably, at least one actuating extension of the conveying element is arranged on the actuating side. Preferably, the actuating extension is arranged to cooperate with a transmission element of the drive unit, in particular with at least two transmission elements of the drive unit. Preferably, the transmission element is arranged on a drive element of the drive unit. Preferably, the base body has an annular configuration. Preferably, the base body has a slotted annular configuration. In particular, the cross-sectional shape of the base body, viewed in a plane, in particular in a plane extending at least approximately perpendicular to the drive axis of the drive shaft, consists approximately of an arc or an open ring extending along an angular range of less than 360°, in particular greater than 90°, and two inlet extensions and / or outlet extensions extending transversely to the arc or the open ring and in particular directly adjacent to the arc or the open ring in the end region of the arc or the open ring. Preferably, the actuation extension is arranged in the region of an arc line or an annular line of the base body on the base body, in particular on the inner face of the base body. The expression "approximately perpendicular" is particularly intended to define an orientation of a direction relative to a reference direction, wherein the direction and the reference direction, in particular when viewed in a projection plane, enclose an angle of 90° and the angle has a maximum deviation of in particular less than 8°, advantageously less than 5° and particularly advantageously less than 2°. The maximum longitudinal length of the actuation extension is in particular at least 5%, preferably 10%, particularly preferably at least 20% smaller than the maximum longitudinal length of the base body. Preferably, the actuation extension extends at least approximately along the entire extent of the circular arc of the basic body or the open ring, in particular up to the end region of the circular arc or the open ring, wherein in each case the inlet extension and / or the outlet extension of the basic body is arranged at the end region. Preferably, the actuation extension extends on the actuation side along an angular range of in particular less than 360°, preferably less than 350°, particularly preferably greater than 180°.

[0011] In particular for generating a negative pressure in the conveyor chamber, the conveyor chamber element, in particular the conveyor membrane, can advantageously be moved away from the opposing surface of the conveyor chamber element, in particular raised from the opposing surface, under the action of a driving force acting in a direction away from the actuation side. Preferably, due to the movement of the conveyor device, in particular the conveyor membrane, away from the opposing surface, a negative pressure can be generated, in particular with respect to the atmospheric pressure surrounding the conveyor device, which negative pressure is in particular less than -0.1 bar, preferably less than -0.2 bar, particularly preferably less than -0.3 bar. An advantageous conveying of the conveying medium into a conveyor chamber of the conveyor device, which is at least partially defined by the opposing surface of the conveyor chamber element and the conveying surface of the conveyor element, can be achieved.

[0012] Preferably, the conveying element (particularly the conveying film) can be driven by a driving unit in such a way that it is possible to convey the conveying medium (particularly the fluid) according to the migration wave principle (see, for example, the disclosure of EP1317626B1). The driving unit can be designed as a combination of a mechanical driving unit, a magnetic driving unit, a piezoelectric driving unit, a hydraulic driving unit, a pneumatic driving unit, an electric driving unit, a magnetorheological driving unit, a carbon tube driving unit, a driving unit of the above type, or any other driving unit that is considered meaningful by a person skilled in the art. Preferably, the driving unit comprises at least a driving element, which is configured to act on the conveying element, particularly the conveying film. However, it is also conceivable that the driving unit has a plurality of driving elements, rather than a driving element, which are configured to act on the conveying element. Preferably, the driving element is configured to realize the elastic deformation of the conveying element (particularly the conveying film) due to the driving force acting on the conveying element (particularly acting on the conveying film). The driving element can have any structure that is considered meaningful to a person skilled in the art, such as structures such as a plunger, an extension, an engagement ring, a hook, a gripping element. Preferably, the driving element is formed as an eccentric shaft. Preferably, the eccentric shaft can be driven in rotation by means of a motor unit of a pump (which includes a delivery device) in a manner known to a person skilled in the art. The motor unit can be designed as an electric motor unit, an internal combustion engine unit, a hybrid motor unit, etc. Preferably, the drive element has an axis of rotation. Preferably, the axis of rotation extends transversely, in particular at least approximately perpendicularly, to a main delivery direction of the delivery chamber, along which the fluid can be delivered through the delivery chamber.

[0013] Preferably, the conveying chamber of the conveying device is defined by a base body of the conveying element and a conveying chamber element. Preferably, the conveying chamber of the conveying device is defined by a conveying surface and an opposing surface opposite to the conveying surface. Preferably, the conveying chamber element is dimensionally stable. Preferably, the conveying chamber element is under preload, in particular in the direction of a drive unit and / or a clamping unit of the conveying device, exerting a force on the conveying element. Preferably, the conveying element, in particular the conveying membrane, is configured to be spring-elastic. In particular, "spring-elastic" is to be understood as a property of an element, in particular a property of a conveying element, which is particularly provided for generating a reaction force, which is dependent on a change in the shape of the element and is preferably proportional to the change and counteracts the change. Preferably, the conveying element, in particular the conveying membrane, is repeatedly deformable, in particular so that the conveying element, in particular the conveying membrane, is not mechanically damaged or destroyed. Preferably, the conveying element, in particular the conveying membrane, in particular after deformation, automatically strives to restore a basic shape, in particular a basic shape of a convex curvature relative to the opposing surface of the conveying element, in particular the zero position of the conveying element, in particular the conveying membrane. Preferably, the spring-elastic configuration of the conveying element (in particular the conveying membrane) can be influenced and / or generated at least in part by virtue of the configuration (in particular the geometric configuration) of the base body and / or by virtue of the arrangement of the conveying element (in particular the conveying membrane) on the conveying chamber element with the opposite surface. The conveying element (in particular the conveying membrane) is preferably arranged on the conveying chamber element with the opposite surface so that the fluid is conveyed into and / or through the conveying chamber due to the bulging of the conveying element (in particular the conveying membrane). After the action of the driving force for conveying the fluid on the conveying element (in particular the conveying membrane) is removed, the conveying surface of the conveying element (in particular the conveying membrane) returns (preferably at least approximately automatically) to an arrangement convexly curved relative to the opposite surface, in particular due to the spring-elastic configuration. The conveying element (in particular the conveying membrane) is preferably formed of a rubber-like and / or caoutchouc-like material. However, it is also conceivable that the conveying device (in particular the conveying membrane) is formed of other materials that are considered meaningful by the person skilled in the art, or of a combination of several materials, which allow the spring-elastic configuration of the conveying element (in particular the conveying membrane). Preferably, the conveying element (in particular the conveying membrane) uses a "bulging action" to convey the fluid into and / or through the conveying chamber. Preferably, the conveying element, in particular the conveying surface, can be at least temporarily bulged for conveying the fluid, wherein at least one bulge is displaceable along the conveying surface, in particular displaceable in a rolling manner, for conveying the fluid. "Provided" is to be understood as meaning in particular specially adapted, specially designed and / or specially assembled. By the fact that an element and / or unit is provided for a specific function, it is to be understood in particular that the element and / or unit realizes and / or performs this specific function in at least one application and / or operating state.

[0014] By means of the configuration according to the invention, it is possible in a particularly advantageous manner to facilitate the replacement or removal of the conveying device as a whole from the housing. Advantageously, a high level of maintainability can be achieved. Advantageously, maintenance and assembly costs can be kept low.

[0015] Furthermore, it is proposed that the housing surrounds the delivery chamber element (in particular the delivery device) at least to a large extent along a circumferential direction extending in a plane extending at least approximately perpendicular to the drive axis of the drive unit. Preferably, the pump comprises at least one, in particular as described above, drive unit having at least one, in particular as described above drive element, in particular at least one eccentric shaft, which, in particular as viewed along a circumferential direction extending around the drive axis of the drive unit, is surrounded to a large extent by the delivery chamber element, the delivery element and the pressing unit of the delivery device. Preferably, in particular as viewed along a circumferential direction extending around the drive axis of the drive unit, the drive unit (in particular at least the drive element) is completely surrounded by the delivery chamber element, the delivery element and the pressing unit. Preferably, the housing completely surrounds at least the delivery chamber element (in particular the delivery device) along a circumferential direction extending in a plane extending at least approximately perpendicular to the drive axis of the drive unit. Preferably, the delivery chamber element surrounds the delivery element at least to a large extent along a circumferential direction extending in a plane extending at least approximately perpendicular to the drive axis of the drive unit. Preferably, the delivery chamber element completely surrounds the delivery element along a circumferential direction extending in a plane extending at least approximately perpendicular to the drive axis of the drive unit. By means of the configuration according to the invention, the encapsulation of the delivery device can advantageously be achieved. It is particularly advantageous that the delivery device as a whole can be replaced or removed from the housing in a convenient manner. Advantageously, a high level of maintainability can be achieved. Advantageously, maintenance and assembly costs can be kept low.

[0016] Furthermore, it is proposed that, viewed in a direction extending transversely to the drive axis of the drive unit, the conveying chamber element is arranged at least between the housing of the conveying device and the conveying element, in particular directly adjacent to the housing and the conveying element or directly against the housing and the conveying element. It is conceivable that there is a gap, in particular a small gap, at least between the conveying chamber element and the housing, in particular with the housing lower part and / or the housing upper part, in particular a gap in order to allow the conveying device to be arranged in the housing. By means of the configuration according to the invention, an encapsulation of the conveying element in the housing can be advantageously achieved. It is particularly advantageous that a replacement or removal of the conveying device as a whole from the housing can be achieved in a suitable manner, in particular since at least the conveying element can be removed from the housing together with the conveying chamber element. Advantageously, a high level of maintainability can be achieved. Advantageously, maintenance and assembly costs can be kept low.

[0017] Furthermore, the invention is based on a delivery device for a pump, in particular for a pump according to the invention, in particular the above-mentioned delivery device, wherein the delivery device comprises: at least one delivery chamber element, in particular the above-mentioned delivery chamber, which is in particular formed separately from a housing, in particular the above-mentioned housing, and at least partially defines the delivery chamber; and at least one elastically deformable delivery element, in particular the above-mentioned delivery chamber element, in particular the above-mentioned delivery element (in particular delivery membrane), which together with the delivery chamber element defines the delivery chamber and is arranged on the delivery chamber element, wherein the delivery chamber element at least largely surrounds the delivery element along a circumferential direction extending in a plane extending at least approximately perpendicularly to a drive axis of a drive unit, in particular the above-mentioned drive unit. It is proposed that the delivery chamber element is formed at least largely (in particular completely) from a plastic material, in particular from an injection-molded plastic material. However, it is also conceivable that the delivery chamber element is formed from different materials that appear to be meaningful to a person skilled in the art, for example, from a biodegradable material, a metal, etc., and / or that the delivery chamber element is manufactured by different production methods that appear to be meaningful to a person skilled in the art, for example, by a 3D printing method, by a tensioning method, by a milling process, by a die-casting process, etc. Preferably, the conveyor chamber element completely surrounds the conveyor element along the circumferential direction, which extends in particular in a plane extending at least approximately perpendicularly to the drive axis of the drive unit. Preferably, the conveyor element is at least largely, in particular completely, arranged in the in particular annular conveyor chamber element. By means of the configuration according to the invention, a weight-optimized configuration can advantageously be achieved. Cost-effective production can be achieved. Advantageously, encapsulation of the conveyor element in the conveyor chamber element can be achieved.

[0018] Furthermore, it is proposed that the conveying chamber element is annular. Preferably, the conveying chamber element has a slotted annular configuration. In particular, when viewed in a plane, in particular in a plane extending at least approximately perpendicularly to the drive axis of the drive unit, the cross-sectional shape of the conveying chamber element consists approximately of a circular arc or an open ring extending along an angular range of less than 360°, and in particular greater than 90°, and two transverse extensions extending transversely to the circular arc or the open ring, the transverse extensions directly adjoining the circular arc or the open ring, in particular in the end region of the circular arc or the open ring. According to the configuration according to the invention, the receiving of the conveying element in the conveying chamber element can be achieved in a structurally simple manner.

[0019] In addition, it is proposed that the conveying chamber element has a relative surface, in particular the aforementioned relative surface, which cooperates with the conveying surface of the conveying element (in particular the aforementioned conveying surface) for conveying fluid, and the relative surface faces the conveying element and has at least one protrusion facing the conveying element. Preferably, the relative surface includes at least two protrusions facing the conveying element. Preferably, the relative surface includes at least one recess away from the conveying element. Preferably, the relative surface extends over at least three continuous arc portions, in particular when observed in cross section. Preferably, the arc portion forms the relative surface. Preferably, two of the three arc portions form two protrusions of the relative surface and are arranged on the outside. Preferably, one of the three arc portions forms a recess and is arranged on the inside, in particular spatially arranged between the two protrusions. It is conceivable that the three arc portions have different or identical radii. By the construction according to the present invention, effective conveying of the fluid can be advantageously achieved. It is particularly advantageous that reliable conveying of the fluid can be achieved.

[0020] It is further proposed that, when viewed in the circumferential direction, the projection extends at least approximately along the entire inner surface of the conveying chamber element, the inner surface extending in particular in the form of a circular arc. Preferably, the inner surface of the conveying chamber element faces the conveying element, in particular the conveying surface of the conveying element. By means of the configuration according to the invention, an effective conveying of the fluid can be advantageously achieved. Particularly advantageously, a reliable conveying of the fluid can be achieved.

[0021] It is also proposed that the conveying chamber element has at least one connection region, in particular at least one connection groove, preferably a sealing groove, which is arranged in particular on the inner face of the conveying chamber element, wherein in the state in which the conveying element is arranged on the conveying chamber element, at least one edge region of the conveying element, in particular an extension of the conveying element arranged on the edge of the conveying element, preferably a sealing extension, engages in this connection region, in particular sealingly engages in said connection region. Preferably, the conveying element comprises a sealing extension which is formed in one piece with the base body of the conveying element, and in the state in which the conveying element is arranged on the conveying chamber element, the sealing extension is at least partially arranged in the sealing groove of the conveying chamber element. In particular, "in one piece" is to be understood as meaning at least firmly bonded, for example by a welding process, an adhesive bonding process, an injection molding process and / or other processes which appear to be meaningful to the person skilled in the art, and / or, for example, advantageously formed as one component by production using a casting and / or by production using a single-component or multi-component injection molding process and advantageously using a single blank. Preferably, the sealing extension is arranged on the conveying side of the base body of the conveying element. In particular, the sealing extension on the conveying side extends across the conveying surface of the conveying element, in particular, viewed in a direction extending at least approximately perpendicular to the conveying surface. Preferably, the sealing extension has a sealing projection, which extends across the conveying surface in a direction at least approximately perpendicular to the conveying surface. Viewed in a plane at least approximately perpendicular to the main conveying direction of the conveying chamber, along which the fluid can be conveyed through the conveying chamber, the sealing projection has a semicircular or elliptical cross-section. However, it is also conceivable that the sealing projection has different cross-sections that are considered meaningful by a person skilled in the art. The sealing projection or the entire sealing extension is arranged in a bead-like manner on the outer edge of the base body. The sealing projection has a main extension direction, which is at least substantially perpendicular to the conveying surface, in particular aligned in a direction away from the conveying side.

[0022] Preferably, the sealing groove has a shape corresponding to the sealing extension, in particular a shape corresponding to at least the sealing projection, in particular a shape corresponding to the corresponding cross section. Preferably, the sealing groove has a U-shaped cross section, in particular when viewed in a plane extending at least approximately perpendicularly to the main conveying direction of the conveying chamber. Preferably, the sealing groove is arranged on the inner face of the conveying chamber element facing the conveying element. Preferably, the sealing groove is arranged in the outer edge region of the conveying chamber element. Preferably, the sealing groove has a maximum distance from the outer edge of the conveying chamber element, which outer edge forms the transition between the inner face facing the conveying element and the outer face of the conveying chamber element facing away from the conveying element, which distance is in particular less than 15 mm, preferably less than 10 mm, particularly preferably less than 8 mm, and most preferably has a value between 12 mm and 6 mm. Preferably, the sealing groove has a maximum distance from the outer edge of the conveying chamber element, which distance in particular corresponds to at least half (in particular 50%) of the maximum lateral extent of the sealing groove, preferably at least corresponds to the maximum lateral extent of the sealing groove, and particularly preferably corresponds to a multiple of the maximum lateral extent of the sealing groove. Preferably, the maximum lateral extent is at least approximately parallel to the drive axis of the drive unit and / or at least approximately perpendicular to the main conveying direction of the conveying chamber. Here, "approximately parallel" is to be understood as meaning in particular an orientation relative to a reference direction, in particular in a plane, wherein the deviation of the direction relative to the reference direction is in particular less than 8°, advantageously less than 5°, particularly advantageously less than 2°. By means of the construction according to the invention, an advantageous sealing effect can be achieved. Advantageously, a reliable sealing can be achieved. Advantageously, leakages can be counteracted. Advantageously, an effective conveying of a fluid can be achieved. Particularly advantageously, a reliable conveying of a fluid can be achieved.

[0023] Furthermore, it is proposed that the conveying chamber element comprises at least one connection piece for a fluid supply connection and at least one further connection piece for a fluid discharge connection, which are arranged on a side of the conveying chamber element facing away from the conveying element, in particular on the outside of the conveying chamber element. Preferably, the connection piece and / or the further connection piece is arranged on at least one transverse extension of the conveying chamber element, in particular is formed integrally with the corresponding transverse extension. In particular, in each case, the connection piece and / or the further connection piece has a main extension axis which is transverse (in particular at least approximately perpendicular) to a main extension plane of at least one transverse extension, in particular to a main extension plane of the corresponding transverse extension. Preferably, the main extension axis of the connection piece and / or the further connection piece is transverse (in particular at least approximately perpendicular) to a main conveying direction of the conveying chamber. Preferably, the main extension axis of the connection piece and / or the further connection piece extends at least approximately parallel to a plane which extends at least approximately perpendicular to a drive axis of the drive unit. Preferably, the connection piece and the further connection piece are arranged on the side facing away from the conveying element, in particular on the outside of the conveying chamber element, in different (in particular opposite) orientations. Preferably, the connecting piece and the further connecting piece extend from the outside of the conveying chamber element in different, in particular opposite, directions. In the state in which the conveying device is arranged in the housing, in particular as viewed along the main extension axis of the connecting piece and / or the further connecting piece, the connecting piece and / or the further connecting piece are arranged at a distance relative to the inner wall of the housing, in particular at least the inner wall of the upper housing part and / or the lower housing part. Preferably, in the state in which the conveying device is arranged in the housing, the connecting piece and / or the further connecting piece are arranged at a distance relative to the inner wall of the housing, in particular relative to the inner face of the upper housing part and / or the inner face of the lower housing part, along the entire circumference of the connecting piece and / or the further connecting piece. However, it is also conceivable that in an alternative configuration of the pump and / or the conveying device, in the state in which the conveying device is arranged in the housing, the connecting piece and / or the further connecting piece abuts against the inner wall of the housing, in particular against the inner face of the upper housing part and / or the inner face of the lower housing part, in particular is supported on the inner wall of the housing, in particular is supported on the inner face of the upper housing part and / or on the inner face of the lower housing part. By means of the configuration according to the invention, effective conveying of the fluid can be achieved. Particularly advantageously, reliable conveying of the fluid can be achieved. Interchangeability of the fluid supply connector and / or the fluid discharge connector can be achieved in a structurally simple manner.

[0024] In addition, it is proposed that the conveying element is formed at least to a large extent (especially completely) from rubber, especially synthetic rubber. The conveying element can be formed, for example, from ethylene-propylene-diene (monomer) rubber (EPDM), fluorocarbon rubber or fluororubber (FKM), acrylonitrile-butadiene rubber (NBR) or the like. Other materials that are considered meaningful by the person skilled in the art are also conceivable. By means of the construction according to the invention, an elastic construction of the conveying element can be achieved in a simple manner. Advantageously, an effective conveying of the fluid can be achieved, in particular, due to the spring-elastic construction of the conveying element, an automatic resetting of the conveying element is achieved.

[0025] The pump according to the invention and / or the delivery device according to the invention are not intended to be limited to the above-mentioned applications and embodiments. In particular, the pump according to the invention and / or the delivery device according to the invention may have a plurality of independent elements, components and units, which are different from the quantities mentioned herein in order to realize the operating modes described herein. In addition, for the range of values ​​disclosed in the present disclosure, the values ​​within the limits are also considered to be disclosed and can be used as required. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Further advantages will be clear from the following description of the drawings. In the drawings, exemplary embodiments of the invention are shown. The drawings, the description and the claims contain many combined features. A person skilled in the art may also appropriately consider these features individually, and combine them to form useful further combinations.

[0027] In the figure:

[0028] Figure 1 A schematic diagram of a pump according to the invention with a delivery device according to the invention is shown;

[0029] Figure 2 shows a schematic diagram of a pump according to the invention with an open housing;

[0030] Figure 3 A cross-sectional view through a pump according to the invention is shown in a schematic diagram;

[0031] Figure 4 A further sectional view through the pump according to the invention is shown in a schematic diagram;

[0032] Figure 5 A schematic diagram showing a delivery device according to the invention in a certain state when removed from the housing of a pump;

[0033] Figure 6 A schematic diagram showing a conveying element of a conveying device according to the present invention;

[0034] Figure 7A schematic diagram showing a conveying chamber element of a conveying device according to the present invention is shown;

[0035] Figure 8 A partial cross-sectional view through the conveying element and the conveying chamber element in the schematic diagram is shown;

[0036] Fig. 9 is a schematic diagram of a pressing element of a pressing unit of a conveying device according to the present invention; and

[0037] Fig.10 A schematic diagram of a fluid supply connection or a fluid discharge connection of a delivery device according to the present invention is shown. DETAILED DESCRIPTION

[0038] Figure 1 A pump 10 is shown with at least one delivery device 12 for delivering at least one fluid (not shown in greater detail here). The delivery device 12 is used at least for delivering a fluid, in particular a fluid generated by the action of a drive unit 16 of the pump 10 on the delivery device 12, in particular a fluid generated by the action of the drive unit 16 on an elastically deformable delivery element 22 of the delivery device 12. The delivery device 12 comprises: at least one delivery chamber 18; at least one delivery chamber element 20, which at least partially defines the delivery chamber 18 and is formed to be dimensionally stable; and at least one elastically deformable, in particular annular, delivery element 22, which together with the delivery chamber element 20 defines the delivery chamber 18 and which is arranged on the delivery chamber element 20 (see Figure 4 ). Preferably, the conveying element 22 is formed as a conveying film. The conveying chamber element 20 is formed at least to a large extent, in particular completely, from a plastic material, in particular from an injection-molded plastic material. However, it is also conceivable that the conveying chamber element 20 is formed from other materials that appear to be meaningful to a person skilled in the art. Preferably, the conveying element 22 is formed at least to a large extent, in particular completely, from rubber, in particular synthetic rubber (for example EPDM, FKM, NBR, etc.). However, it is also conceivable that the conveying element 22 is formed from other materials that appear to be meaningful to a person skilled in the art.

[0039] The pump 10 comprises at least a drive unit 16 for acting on the delivery device 12 and at least one housing 14 for receiving the delivery device 12. Preferably, the drive unit 16 comprises at least one drive element 24 for acting on the delivery device 12 (see Figure 4). Preferably, the drive element 24 is designed as an eccentric shaft. However, it is also conceivable that the drive element 24 has a different configuration that appears meaningful to a person skilled in the art, for example, a rotationally symmetrical axis for acting on the conveying device 12, etc., wherein at least one eccentric is arranged on the rotationally symmetrical axis. The drive element 24 can be connected directly (in particular in a rotationally fixed manner) or indirectly (for example via a gear unit or via at least one gear element) to a drive shaft (not shown in more detail here) of a motor unit, such as an electric motor, an internal combustion engine, a pneumatic motor or the like. The drive element 24 has an axis of rotation 26, which extends transversely, in particular at least approximately perpendicularly to a main conveying direction, wherein the fluid can be conveyed through the conveying chamber 18 along said main conveying direction.

[0040] Preferably, the delivery device 12 is at least largely, in particular completely arranged in the housing 14. The housing 14 surrounds the delivery device 12 at least largely, in particular completely. In particular, the housing 14 is provided in a manner known to those skilled in the art for at least partially, in particular completely surrounding and / or supporting the delivery device 12 and / or the drive unit 16 of the pump 10. The housing 14 can be formed of a plastic material, a metal, a combination of a plastic material and a metal, or any other material that is considered meaningful by those skilled in the art. The housing 14 can have a shell-type construction, a can-type construction, a combination of a shell-type construction and a can-type construction, or any other construction that is considered meaningful by those skilled in the art.

[0041] The housing 14 is formed at least separately from the conveyor chamber element 20 of the conveyor device 12, in particular separately from the conveyor device 12 as a whole, in particular in such a way that the conveyor chamber element 20, in particular the conveyor device 12, as a whole can be removed from the housing 14. Preferably, after disassembly of the housing upper part 36, in particular together with the conveyor element 22 arranged on the conveyor chamber element 20, the conveyor chamber element 20, in particular the conveyor device 12, as a whole can be removed from the housing 14. When separated from the disassembly of the individual components of the conveyor device 12, the conveyor device 12 can preferably be removed as a whole from the housing 14, in particular after disassembly of the housing upper part 36 of the housing 14. The housing 14 at least largely surrounds the conveyor chamber element 20, in particular the conveyor device 12, in particular in a state in which the conveyor device 12, in particular the conveyor device 12, as a whole is arranged in the housing 14.

[0042] When viewed in a direction extending transversely to the drive axis 70 of the drive unit 16, the conveying chamber element 20 is arranged at least between the housing 14 and the conveying element 22 of the conveying device 12, in particular directly adjacent to the housing 14 or directly against the housing 14 (see Figure 2 ). The conveying device 12 at least substantially completely surrounds the drive unit 16, at least in the state in which the conveying device 12 is arranged in the housing 14, in particular in a circumferential direction (which extends in a plane extending at least substantially perpendicularly to the drive axis 70 of the drive unit 16). The conveying chamber element 20 has an outer surface, wherein in the state in which the conveying device 12 is arranged on the housing 14, the outer surface is connected to the inner surface of the housing 14 in a force-fitting and / or form-fitting manner, in particular (preferably directly) abuts against the inner surface of the housing 14. In the state in which the conveying device 12, in particular the conveying device 12 as a whole, is arranged in the housing 14, preferably, the outer surface of the conveying chamber element 20 at least partially abuts against the inner surface of the housing 14, in particular at least against the inner surface of the housing lower part 72 of the housing 14. Preferably, more than 30%, preferably more than 40%, particularly preferably less than 95%, most preferably between 40% and 60% of the outer overall outer surface of the outer side of the conveying chamber element 20 abuts against the inner side of the housing 14, in particular against the inner side of the housing lower part 72 of the housing 14. Preferably, the housing 14 comprises a recess, wherein the conveying device 12 can be arranged in the recess, in particular the conveying device 12 is arranged in the recess. The recess of the housing 14, in particular the recess of the housing lower part 72, is preferably defined by a collar-like extension of the interior of the housing 14, in particular the interior of the housing lower part 72. The collar-like extension extends over a range of less than 360° (degrees), in particular allowing an inlet region and an outlet region of the conveying device 12 to be arranged in the housing 14, in particular in the housing lower part 72.

[0043] Furthermore, the housing 14 comprises at least one receptacle 32, in particular at least two receptacles 32, 34, for receiving at least one fluid supply connection 28 and / or at least one fluid discharge connection 30 of the delivery device 12. Preferably, the fluid supply connection 28 is provided for connection to a fluid line, in particular for supplying fluid to the delivery chamber 18. Preferably, the fluid discharge connection 30 is provided for connection to a fluid line, in particular for discharging fluid from the delivery chamber 18. Preferably, the receptacle 32 and / or the receptacle 34 are arranged in a housing upper part 36 of the housing 14 (see Figure 1 and Figure 3 ). However, it is also conceivable that the receptacle 32 and / or the receptacle 34 are arranged in other components of the housing 14, for example, in the housing lower part 72, etc. Preferably, the fluid supply connector 28 and / or the fluid discharge connector 30 are connected to the receptacle 32 and / or the receptacle 34 by form fit and / or force fit, in particular fixed to the receptacle 32 and / or the receptacle 34. For example, the receptacle 32 and / or the receptacle 34 include an internal thread on the inner surface for fixing the fluid supply connector 28 and / or the fluid discharge connector 30 to the housing 14, in particular to the housing upper part 36 (see Figure 3). However, it is also conceivable that the fluid supply connector 28 and / or the fluid discharge connector 30 are arranged (particularly fixed) on the socket 32 ​​and / or the socket 34 by a form-fitting connection (particularly a threadless connection), for example, by being inserted into the socket 32 ​​and / or the socket 34. The socket 32 ​​and / or the socket 34 extend continuously from the outside of the housing 14 (particularly the outside of the housing upper part 36) to the inner surface of the housing 14 (particularly the inner surface of the housing upper part 36). Preferably, the socket 32 ​​and / or the socket 34 are formed as through holes from the outside to the inner surface of the housing 14. In a state in which the conveying device 12 is arranged in the housing 14, the fluid supply connector 28 and / or the fluid discharge connector 30 extend from the conveying chamber element 20 at least to the outside of the housing 14, in particular beyond the outside of the housing 14, preferably in a state in which the connecting piece 38 of the conveying chamber element 20 is connected to the fluid supply connector 28 and / or in particular, in a state in which another connecting piece 40 of the conveying chamber element 20 is connected to the fluid discharge connector 30 (see Figure 3 ).

[0044] The connecting element 38 and / or in particular the further connecting element 40 is arranged, in particular in each case on at least one transverse extension 60, 62 of the conveying chamber element 20, in particular is formed integrally with the respective transverse extension 60, 62 (see Figure 2 , Figure 3 , Figure 5 and Figure 7). In particular, viewed in a plane, in particular in a plane extending at least approximately perpendicularly to the rotation axis 26 of the drive unit 24, in particular in a plane extending at least approximately perpendicularly to the drive axis 70 of the drive unit 16, the conveying chamber element 20 has a cross-sectional shape consisting approximately of a circular arc or an open ring and two transverse extensions 60, 62. The circular arc or open ring extends along an angular range of less than 360°, in particular greater than 90°, and the two transverse extensions 60, 62 extend transversely to the circular arc or the open ring, in particular in the end region of the circular arc or the open ring and directly adjoin the circular arc or the open ring. The connecting piece 38 and / or in particular the further connecting piece 40 have (in particular in each case) a main extension axis 64, 66, which extends transversely to (in particular at least approximately perpendicularly to) a main extension plane of at least one transverse extension 60, 62, in particular the respective transverse extension 60, 62. Preferably, the main extension axes 64, 66 of the connecting element 38 and / or in particular the further connecting element 40 extend transversely (in particular at least approximately perpendicularly) to a main conveying direction of the conveying chamber 18, along which the fluid can be conveyed through the conveying chamber 18. Preferably, the main extension axes 64, 66 of the connecting element 38 and / or in particular the further connecting element 40 extend at least approximately parallel to a plane, which is at least approximately perpendicular to the axis of rotation 26 of the drive element 24. The connecting element 38 and in particular the further connecting element 40 are arranged on a side facing away from the conveying element 22 (in particular outside the conveying chamber element 20) in different (in particular opposite) orientations. Preferably, the connecting element 38 and in particular the further connecting element 40 extend from the outside of the conveying chamber element 20 in different (in particular opposite) directions. Preferably, the connecting element 38 and in particular the further connecting element 40 extend from the outside of the conveying chamber element 20 in a direction facing away from the conveying chamber element 20, which directions face in opposite directions.

[0045] When the conveying device 12 is arranged in the housing 14, in particular, when viewed along the main extension axes 64, 66 of the connecting element 38 and / or in particular the further connecting element 40, the connecting element 38 and / or in particular the further connecting element 40 are arranged at a certain distance relative to the inner wall of the housing 14 (in particular, at least the inner wall of the housing upper part 36 and / or the housing lower part 72) (see Figure 2 and Figure 3). Preferably, in the state where the conveying device 12 is arranged in the housing 14, the connecting piece 38 and / or in particular the further connecting piece 40 are arranged at a certain distance along the entire circumference of the connecting piece 38 and / or in particular the further connecting piece 40 relative to the inner wall of the housing 14, in particular relative to the inner surface of the housing upper part 36 and / or relative to the inner surface of the housing lower part 72. In particular, the minimum distance of the connecting piece 38 and / or in particular the further connecting piece 40 relative to the inner wall of the housing 14, relative to the inner surface of the housing upper part 36 and / or relative to the inner surface of the housing lower part 72 is greater than 0.001 mm, preferably greater than 0.01 mm, particularly preferably greater than 0.1 mm, and most preferably less than 10 mm. Preferably, the minimum distance of the connecting piece 38 and / or in particular the further connecting piece 40 relative to the inner wall of the housing 14, in particular relative to the inner surface of the housing upper part 36 and / or relative to the inner surface of the housing lower part 72 has a value in the value range from 0.1 mm to 5 mm. However, it is also conceivable that in an alternative construction of the pump 10, the connecting piece 38 and / or in particular the further connecting piece 40 abuts against an inner wall of the housing 14, in particular against an inner surface of the upper housing part 36 and / or an inner surface of the lower housing part 72, in particular is supported on an inner wall of the housing 14, in particular is supported on an inner surface of the upper housing part 36 and / or an inner surface of the lower housing part 72, in particular when the conveying device 12 is arranged in the housing 14.

[0046] The conveying chamber element 20 comprises at least a connection piece 38 for a fluid supply connection 28 (which is in particular designed differently from a hose) and / or at least a further connection piece 40 for a fluid discharge connection 30 (which is in particular designed differently from a hose), the connection piece and / or the further connection piece being arranged on a side facing away from the conveying element 22, in particular on an outer surface of the conveying chamber element 20 (see Figure 2 , Figure 3 , Figure 5 and Figure 7 ). The fluid supply connector 28 and / or the fluid discharge connector 30 are preferably tubular. The fluid supply connector 28 and / or the fluid discharge connector 30 preferably have a tapered extending insertion end 44, 46 (see Figure 3 and Fig.10). In the state where the fluid supply connector 28 and / or the fluid discharge connector 30 are arranged on the conveying chamber element 20, the insertion ends 44, 46 of the fluid supply connector 28 and / or the fluid discharge connector 30 are arranged in the connecting piece 38 or in particular in the other connecting piece 40. Preferably, the fluid supply connector 28 and / or the fluid discharge connector 30 include a coupling end 48, 50, which is used to connect to a supply line or a discharge line to a supply line or a discharge line of the fluid from or into the conveying chamber 18. It is also conceivable that the fluid supply connector 28 and / or the fluid discharge connector 30 are provided for connection to other components that are considered meaningful by a person skilled in the art, such as a fluid coupling, a hose nozzle, etc. The coupling ends 48, 50 are arranged on the side of the fluid supply connector 28 or the fluid discharge connector 30 facing away from the insertion ends 44, 46. Preferably, the fluid supply connector 28 and the fluid discharge connector 30 have at least approximately the same structure. However, it is also conceivable, for example in the configuration of a functional unit 58 or the like, for the fluid supply connection 28 and the fluid discharge connection 30 to be formed at least partially differently from one another.

[0047] The conveying device 12 comprises at least one functional unit 58, in particular a filter unit and / or a valve unit, and a fluid supply connection 28 and / or a fluid discharge connection 30, wherein the functional unit 58 is at least partially, in particular completely, arranged in the fluid supply connection 28 and / or the fluid discharge connection 30 (see Figure 2 , Figure 3 and Fig.10 ). Preferably, the functional unit 58 is at least partially, in particular completely, firmly integrated in the fluid supply connector 28 and / or the fluid discharge connector 30, or is at least partially, in particular completely, interchangeably arranged in the fluid supply connector 28 and / or the fluid discharge connector 30. The functional unit 58 can, for example, have a filter cartridge and / or a valve cartridge, in particular two filter cartridges and / or valve cartridges, which are arranged in the fluid supply connector 28 and / or the fluid discharge connector 30. Other configurations or arrangements of the functional unit 58 that are considered meaningful by a person skilled in the art are also conceivable, such as an arrangement between the connector 38 and the fluid supply connector 28, or in particular an arrangement between another connector 40 and the fluid discharge connector 30, etc.

[0048] The fluid supply connector 28 and / or the fluid discharge connector 30 are removably arranged on the housing 14, in particular on the housing upper part 36, and / or on the delivery chamber element 20. The pump 10 comprises at least one fixing unit 42 for fixing the fluid supply connector 28 and / or the fluid discharge connector 30 to the housing 14, in particular to the housing upper part 36, by a form-fitting and / or force-fitting connection. Preferably, the fixing unit 42 comprises an external thread, in particular two external threads, which are in particular arranged on the outer surface of the insertion holes 32, 34 (see Figure 1 ). It is conceivable that the fixing unit 42 comprises at least one nut, in particular two nuts (not shown in greater detail here), wherein the nuts cooperate with an external thread to fix the fluid supply connector 28 and / or the fluid discharge connector 30 to the housing 14, in particular a collar that clamps the fluid supply connector 28 and / or the fluid discharge connector 30. Alternatively or additionally, preferably, the fixing unit 42 comprises at least an internal thread arranged on the receptacle 32, 34. Furthermore, it is conceivable that, alternatively or additionally, the fixing unit 42 comprises further components that appear useful to a person skilled in the art for fixing the fluid supply connector 28 and / or the fluid discharge connector 30 to the housing 14, in particular to the housing upper part 36, by a form-fitting and / or force-fitting connection (e.g., a locking ring, a locking pin, etc.).

[0049] The conveying device 12 comprises at least one movement compensation unit 52, which is provided at least for the purpose of at least partially compensating and / or suppressing a relative movement between the fluid supply connection 28 and the connecting piece 38 when the connecting piece 38 is connected to the fluid supply connection 28, and / or for the purpose of at least partially compensating and / or suppressing a relative movement between the fluid supply connection 30 and, in particular, the further connecting piece 40 when the further connecting piece 40 is connected to the fluid discharge connection 30 (see Figure 3). Preferably, the motion compensation unit 52 comprises at least one damping element 54, in particular at least two damping elements 54, 56. Preferably, the damping element 54 and / or the damping element 56 are formed as an O-ring. However, it is also conceivable that the damping element 54 and / or the damping element 56 have different configurations that appear meaningful to a person skilled in the art, such as, for example, an elastomeric disk, an elastomeric hollow cylinder, etc. Preferably, the damping element 54 and / or the damping element 56 are arranged between the connecting piece 38 and the fluid supply connector 28, or in particular between the further connecting piece 40 and the fluid discharge connector 30. In particular, the damping element 54 and / or the damping element 56 abuts against the inner face of the connecting piece 38 and the outer face of the inlet end 44 of the fluid supply connector 28, or in particular against the inner face of the further connecting piece 40 and the outer face of the inlet end 46 of the fluid discharge connector 30. Preferably, damping element 54 and / or damping element 56 are provided, in particular for fluid sealing between connection piece 38 and fluid supply connection 28 or in particular between further connection piece 40 and fluid discharge connection 30 in addition to damping the movement.

[0050] The conveying element 22 comprises at least one base body, in particular at least one substantially annular base body 76 (see Figure 3 and Figure 6 ), which is elastically deformable and has at least one conveying surface 78, which is arranged on the conveying side of the base body 76. Furthermore, preferably, the conveying element 22 comprises at least one actuating extension 80, in particular a plurality of actuating extensions 80, for connection with at least one transmission element 82 of the drive unit 16, wherein the transmission element cooperates with the actuating extension 80, in particular a plurality of actuating extensions 80, on the actuating side of the base body 76. Preferably, the conveying side of the base body 76 is arranged on a side of the base body 76 facing away from the actuating side of the base body 76. In particular, the conveying side forms the outer side of the base body 76. Preferably, the actuating side forms the inner face of the base body 76. In particular, the actuating side at least partially forms the inner face of the base body 76. The actuating extension 80, in particular a plurality of actuating extensions 80, is in particular formed integrally with the base body 76. However, it is also conceivable that the actuation extension 80 , in particular a plurality of actuation extensions 80 , is formed separately from the base body 76 and is fixed to the base body 76 by a form-fitting and / or force-fitting connection which appears sensible to a person skilled in the art.

[0051] The actuation extension 80, in particular a plurality of actuation extensions 80, is formed as a form-fitting and / or force-fitting element cooperating with a transmission element 82, at least for transmitting a drive force acting in a direction away from the actuation side by a form-fitting and / or force-fitting connection, in particular by an adhesive-free form-fitting and / or force-fitting connection. Preferably, the actuation extension 80, in particular a plurality of actuation extensions 80, is clamped between two transmission elements 82, in particular transmission rings, which are arranged on the drive element 24 (see Figure 4 The actuation extension 80 , in particular the plurality of actuation extensions 80 , in particular when viewed along a circumferential direction extending around the drive axis 70 of the drive unit 16 , has a maximum longitudinal extent that is smaller than a maximum longitudinal extent of the base body 76 .

[0052] Preferably, viewed in a plane, in particular in a plane extending at least approximately perpendicular to the drive axis 70, the base body 76 has a cross-sectional shape consisting approximately of a circular arc or an open ring and two inlet and / or outlet extensions extending transversely to the circular arc or the open ring. Preferably, the circular arc or the open ring of the cross-sectional shape of the base body 76 extends along an angular range of less than 360°, in particular greater than 90°. Preferably, the inlet and / or outlet extensions extending transversely to the circular arc or the open ring of the cross-sectional shape of the base body 76 are arranged directly adjacent to the circular arc or the open ring, in particular in the end region of the circular arc or the open ring. Preferably, the actuating extension 80, in particular a plurality of actuating extensions 80, extend along a closed circular ring, wherein the actuating extension 80, in particular a plurality of actuating extensions 80, can itself form a circular ring. The maximum extent of the actuation extension 80 along the central axis of the base body 76 or the total extent of a plurality of consecutive actuation extensions 80 along the central axis of the base body 76 is in particular at least 5%, preferably at least 10%, most preferably at least 20% smaller than the maximum longitudinal extent of the base body 76. Preferably, the actuation extension 80 or a plurality of consecutive actuation extensions 80 together extend on the actuation side along an angular extent of in particular greater than 270°, preferably less than 360° or 360°.

[0053] The conveyor chamber element 20 at least largely surrounds the conveyor element 22 in the circumferential direction, in particular in a plane extending at least approximately perpendicularly to the drive axis 70 of the drive unit 16 (see Figure 3 and Figure 5). The conveying chamber element 20 is annular. Preferably, the conveying chamber element 20 and the conveying element 22 have at least approximately similar shapes, especially when viewed in a plane extending at least approximately perpendicularly to the drive axis 70 of the drive unit 16. In particular, the conveying chamber element 20 and the conveying element 22, in particular the base body 76 of the conveying element 22, have a basic shape similar to the Greek capital letter Omega, wherein preferably, the extension of the conveying chamber element 20 and the conveying element 22 is at an angle of 90° to the extension of the Greek capital letter Omega.

[0054] The conveying chamber element 20 has an opposing surface 74 cooperating with the conveying surface 78 of the conveying element 22 for conveying the fluid, which opposing surface faces the conveying element 22 and has at least one protrusion 84, 86 pointing toward the conveying element 22 (see Figure 4 , Figure 7 and Figure 8 ). Preferably, the opposing surface 74 comprises at least two projections 84, 86 pointing toward the conveying element 22. Viewed in the circumferential direction, the projections 84 and / or the projections 86 extend along at least substantially the entire inner surface (in particular the arc-shaped inner surface) of the conveying chamber element 20. Preferably, the projections 84 and / or the projections 86 extend along the inner surface of the conveying chamber element 20, starting from one of the transverse extensions 60, 62, along an arc or an open ring to the other of the transverse extensions 60, 62.

[0055] The conveying element 22, in particular the base body 76, comprises a conveying surface 78 which, viewed in a cross section of the conveying element 22, in particular in a cross section of the conveying chamber element 18, has a maximum lateral extent which at least approximately, in particular completely, corresponds to the maximum lateral extent of the opposing surface 74 of the conveying chamber element 20 (see Figure 4 and Figure 8 ). In order to convey the fluid into the conveying chamber 18 and / or through the conveying chamber 18, due to the effect of the driving force that can be generated by the drive unit 16, the conveying surface 78 can be placed, in particular completely placed against the opposite surface 74 of the conveying chamber element 20. Observed on the cross section of the conveying chamber element 20, the opposite surface 74 of the conveying chamber element 20 has at least three continuous arc sections. The arc sections form the opposite surface 74. Two of the three arc sections form protrusions 84, 86 of the opposite surface 74 and are arranged on the outside. One of the three arc sections forms a depression and is arranged on the inside, in particular between the protrusions 84, 86. It is conceivable that these three arc sections have different or identical radii.

[0056] The conveyor chamber element 20 has at least one connecting region, in particular at least one connecting groove, preferably a sealing groove 88, in particular arranged on the inner face of the conveyor chamber element 20, to which at least one edge region of the conveyor element 22, in particular an extension of the conveyor element 22 (preferably a sealing extension 90) arranged at the edge of the conveyor element 22, engages (in particular seals) when the conveyor element 22 is arranged on the conveyor chamber element 20 (see Figure 4 and Figure 8). The conveying element 22 comprises at least a sealing extension 90 which is formed integrally with the base body 76 of the conveying element 22 and which is at least partially arranged in the sealing groove 88 of the conveying chamber element 20 in a state where the conveying element 22 is arranged on the conveying chamber element 20. The sealing groove 88 is formed in such a way that a flat contact area is established between the sealing extension 90 and an edge region 92 of the conveying chamber element 20 which defines the sealing groove 88. The sealing groove 88 and the edge region 92 of the conveying chamber element 20 which defines the sealing groove 88 (which edge region is arranged on the side of the sealing groove 88 which faces the conveying surface 78 of the base body 76 of the conveying element 22) are formed in such a way that a flat contact area of ​​the sealing extension 90 is established on the edge region 92 of the conveying chamber element 20 which defines the sealing groove 88 and on the groove base 94 of the sealing groove 88. The sealing groove 88 extends completely around the opposing surface 74 of the conveying chamber element 20, which cooperates with the conveying surface 78 of the base body 76 of the conveying element 22 to convey the fluid and defines the opposing surface 74. Preferably, the sealing groove 88 on the transverse extension 60, 62 of the conveying chamber element 20 extends around the inlet or outlet opening in the corresponding transverse extension 60, 62 and transitions, in particular seamlessly, to the annular inner face of the conveying chamber element 20, in particular defining the opposing surface 74. Preferably, the sealing groove 88 extends along the entire inner circumferential area of ​​the conveying chamber element 20. In order to cooperate with the conveying surface 78 of the base body 76 of the conveying chamber element 22 to convey the fluid, the conveying chamber element 20 has a opposing surface 74, in particular, viewed in cross section, which extends over at least three consecutive arc portions, wherein at least the edge region 92 of the conveying chamber element 20 defining the sealing groove 88 is in particular arranged directly adjacent to at least one of the three arc portions, in particular the outer one. The sealing extension 90 extends completely around the conveying surface 78 of the base body 76 of the conveying element 22 and defines the conveying surface 78. Preferably, the sealing extension 90 extends along the entire outer circumference of the base body 76. Preferably, the sealing extension 90 extends around the inlet extension and / or the outlet extension of the base body 76 and transitions, in particular seamlessly, to the annular base shape of the base body 76, in particular defining the conveying surface 78. Preferably, the sealing extension 90 has a transition region to an edge region of the base body 76 of the conveying element 22, which transition region has a cross section that is different from the cross section of another transition region of the sealing extension 90 to the conveying surface 78 of the base body 76 (see Figure 8 ).

[0057] Furthermore, the conveying device 12 comprises at least one pressing unit 96 having at least one pressing element 98, 100, in particular at least one clamping ring, which is provided for exerting a contact pressure force on the sealing extension 90 in the direction of the conveying chamber element 20 and for compressing the sealing extension 90 at least in the region of the sealing groove 88 (see Figure 4 , Figure 5 and Fig. 9 ). The sealing extension 90 extends across the conveying surface 78 of the base body 76 of the conveying element 22 in a direction transverse to (in particular at least approximately perpendicular to) the conveying surface 78. In particular, at least in the non-conveying state of the conveying element 22, at least in a sealing area 102 between the conveying element 22 and the conveying chamber element 20, the pressing unit 96 is configured to generate an uneven contact pressure force along the maximum overall extent of the sealing area 102, in particular along the maximum circumferential extent between the conveying element 22 and the conveying chamber element 20. Preferably, the sealing area 102 is formed by the cooperation of the sealing groove 88 and the sealing extension 90. Preferably, the sealing area 102 is formed by the contact surface between the sealing extension 90 and the sealing groove 88. Preferably, the pressing unit 96 is configured to generate an uneven contact pressure force distribution along the sealing line of the conveying element 22, in particular along the circumferential direction of the conveying element 22. Preferably, the sealing line is formed by the sealing extension 90.

[0058] Preferably, the pressing unit 96 is designed such that, in particular at least in the non-conveying state of the conveying element 22, the conveying element has a non-uniform compression along the maximum overall extent of the sealing area 102 or the sealing line, in particular along the maximum circumferential extent of the annular conveying element 22. The pressing unit 96 has at least one pressing element 98, 100, in particular at least one clamping ring, wherein the conveying element 22 is annular and is pressed against the inner circumference of the annular conveying chamber element 20 by the pressing element 98, 100. Preferably, the pressing unit 96 comprises at least two pressing elements 98, 100, in particular two clamping rings, between which the conveying element 22 is arranged in the conveying chamber element 20. Preferably, the conveying element 22 can be pressed against the inner circumference of the annular conveying chamber element 20 by the pressing elements 98, 100. In particular, the sealing extension 90 is pressed into the sealing groove 88 by the pressing elements 98, 100 acting on the conveying element 22. The pressing unit 96 comprises at least pressing elements 98, 100, in particular at least a clamping ring, wherein the conveying chamber element 22 comprises at least the sealing extension 90, and wherein the pressing elements 98, 100, in particular at least in the circumferential direction of the conveying chamber element 20, press the sealing extension 90, in particular with a contact pressing force that is non-uniform in the circumferential direction, against the conveying chamber element 20. The pressing unit 96 comprises at least pressing elements 98, 100, in particular at least a clamping ring, which has a pressing surface 104, which has a varying height along the maximum longitudinal extent of the pressing surface 104, in particular along the circumferential direction of the pressing elements 98, 100, in particular with a varying distance relative to a surface facing away from the pressing surface 104, in particular an inner surface of the pressing elements 98, 100. Preferably, the varying height of the pressing surface 104 is formed by different maximum heights of the pressing surface 104 in the circumferential direction. For example, three different positions 106, 108, 110 on the pressing element 98 are Fig. 9106, 108, 110, which can be formed in various ways, for example by changing the maximum thickness of the pressing element 98 at the three positions 106, 108, 110 compared to the other positions of the pressing element 98, by changing the geometric profile of the pressing surface 104 on the side of the pressing element 98 facing the conveying element 22, or in any other way that is meaningful to a person skilled in the art. For example, due to the varying height, the sealing extension 90 is compressed to different degrees at the positions 106, 108, 110. At the position 106, for example, the sealing extension 90 is compressed, in particular, by more than 10%, preferably more than 15%, preferably more than 20%, and most preferably more than 22% of the maximum thickness 68 of the sealing extension 90. At position 108, for example, the seal extension 90 is compressed by more than 5%, preferably more than 10%, preferably more than 15%, and most preferably more than 19% of the maximum thickness 68 of the seal extension 90. At position 110, for example, the seal extension 90 is compressed, in particular, by more than 4%, preferably more than 8%, preferably more than 14%, and most preferably more than 16% of the maximum thickness 68 of the seal extension 90.

[0059] The pressing unit 96 comprises at least a pressing element 98 (in particular at least a clamping ring) and at least one further pressing element 100 (in particular at least one clamping ring), wherein the conveying element 22 is annular and is pressed against the inner circumference of the annular conveying chamber element 20 by means of the pressing element 98 and the further pressing element 100, wherein the pressing element 98 and the further pressing element 100 are arranged on the conveying element 22, on the sides of the conveying element 22 facing away from each other. Preferably, the pressing element 98 and the further pressing element 100 of the pressing unit 96 have at least approximately similar constructions. The pressing element 98 and the further pressing element 100 are arranged on the conveying chamber element 20 in a mirror-symmetrical manner, in particular in order to press the conveying element 22 against the conveying chamber element 20 and press the sealing extension 90 into the sealing groove 88. The conveying chamber element 20 comprises at least a recess, preferably a sealing groove 88, which extends in particular along the inner circumference of the annular conveying chamber element 20, into which recess at least a sealing extension 90 of the annular conveying element 22 is pressed by means of a pressing element 98, in particular a clamping ring, of a pressing unit 96 and / or a further pressing element 100, wherein the compression of the sealing extension 90 is non-uniform along the maximum longitudinal extent of the sealing extension 90, which extends in particular along the circumferential direction of the conveying element 22. Alternatively or in addition to a pressing surface 104 of varying height of the pressing element 98 and / or the further pressing element 100, it is conceivable that the conveying element 22 comprises at least a sealing extension 90, which is pressed against the inner circumference of the annular conveying chamber element 20 by means of the pressing unit 96 and has a maximum thickness 68 which varies along the maximum longitudinal extent of the sealing extension 90, in particular along the circumferential direction of the conveying element 22. Other configurations of the pressing unit 96 that appear appropriate to a person skilled in the art are also conceivable in order to produce a non-uniform compression of the sealing extension 90 in the circumferential direction in the sealing region 102 .

Claims

1. A pump for at least conveying a fluid, comprising: At least one conveying device, comprising at least one conveying chamber (18), at least one dimensionally stable conveying chamber element (20) and at least one elastically deformable conveying element (22), wherein the conveying chamber element (20) at least partially defines the conveying chamber (18), the conveying element (22) defines the conveying chamber (18) together with the conveying chamber element (20) and the conveying element (22) is arranged on the conveying chamber element (20); at least one drive unit (16) for acting on the conveying device; and at least one housing (14) for receiving the conveying device, wherein the housing (14) is provided with a plurality of movable members. In the embodiment of the present invention, the housing (14) is formed separately from the conveying device as a whole, so that the conveying device as a whole can be removed from the housing (14), wherein the conveying chamber element (20) has an outer surface, which is connected to the inner surface of the housing (14) in a force-fitting and / or form-fitting manner when the conveying device is arranged on the housing (14), wherein the conveying chamber element (20) at least largely surrounds the conveying element (22) along a circumferential direction extending in a plane, wherein the plane extends at least approximately perpendicular to the drive axis (70) of the drive unit (16).

2. The pump according to claim 1, characterized in that The housing (14) at least largely surrounds the conveyor chamber element (20) along a circumferential direction extending in a plane, wherein the plane extends at least approximately perpendicularly to a drive axis (70) of the drive unit (16).

3. The pump according to claim 1, characterized in that The housing (14) at least largely surrounds the conveying device along a circumferential direction extending in a plane, wherein the plane extends at least approximately perpendicularly to a drive axis (70) of the drive unit (16).

4. A pump according to any one of claims 1 to 3, characterized in that The conveyor chamber element (20) is arranged at least between the housing (14) of the conveying device and the conveying element (22), viewed in a direction extending transversely to a drive axis (70) of the drive unit (16).

5. The pump according to claim 4, characterized in that Viewed in a direction extending transversely to a drive axis (70) of the drive unit (16), the conveyor chamber element (20) is directly adjacent to the housing (14) and the conveyor element (22).

6. The pump according to claim 4, characterized in that Viewed in a direction extending transversely to a drive axis (70) of the drive unit (16), the conveyor chamber element (20) lies directly against the housing (14) and the conveyor element (22).

7. A delivery device for a pump according to any one of claims 1 to 6, wherein: The conveyor chamber element (20) at least largely surrounds the conveyor element (22) along a circumferential direction extending in a plane, wherein the plane extends at least approximately perpendicularly to a drive axis (70) of a drive unit (16), wherein the conveyor chamber element (20) is at least largely formed from a plastic material.

8. The conveying device according to claim 7, characterized in that The conveying chamber element (20) is formed completely from a plastic material.

9. The conveying device according to claim 7, characterized in that: The conveying chamber element (20) is annular.

10. The conveying device according to claim 7, characterized in that: The conveying chamber element (20) has a counter surface (74) which cooperates with a conveying surface (78) of the conveying element (22) for conveying fluid, the counter surface (74) facing the conveying element (22) and having at least one protrusion (84, 86) facing the conveying element (22).

11. The conveying device according to claim 10, characterized in that Viewed in the circumferential direction, the projections (84, 86) extend along at least substantially the entire inner surface of the conveying chamber element (20).

12. The conveying device according to claim 11, characterized in that The inner surface extends in an arc shape.

13. The conveying device according to any one of claims 7 to 12, characterized in that The conveying chamber element (20) has at least one connecting area arranged on the inner surface of the conveying chamber element (20); wherein when the conveying element (22) is arranged on the conveying chamber element (20), at least one edge area of ​​the conveying element (22) engages in the connecting area.

14. The conveying device according to claim 13, characterized in that The at least one connecting area arranged on the inner surface of the conveying chamber element (20) is at least one connecting groove, and the at least one edge area of ​​the conveying element (22) is an extension of the conveying element (22) arranged on the edge of the conveying element, and when the conveying element (22) is arranged on the conveying chamber element (20), the extension is engaged in the at least one connecting groove.

15. The conveying device according to claim 14, characterized in that When the conveying element (22) is arranged on the conveying chamber element (20), the extension is sealingly engaged in the at least one connecting groove.

16. The conveying device according to claim 15, characterized in that The at least one connecting groove is a sealing groove (88).

17. The conveying device according to claim 15, characterized in that The extension is a sealing extension (90).

18. The conveying device according to any one of claims 7 to 12, characterized in that The conveyor chamber element (20) comprises at least one connection piece (38) for a fluid supply connection (28) and at least one further connection piece (40) for a fluid discharge connection (30), wherein the connection piece (38) and the further connection piece (40) are arranged on a side of the conveyor chamber element (20) facing away from the conveyor element (22).

19. The conveying device according to any one of claims 7 to 12, characterized in that The conveying element (22) is formed at least largely from rubber.

20. The conveying device according to any one of claims 7 to 12, characterized in that The conveying element (22) is formed completely from rubber.

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