Delivery device for at least delivering a fluid and a pump comprising such a delivery device

Abstract

The present invention relates to a conveying device for conveying at least a fluid, the conveying device comprising: at least one conveying chamber (18); at least one conveying chamber element (20), which at least partially delimits the conveying chamber (18) and is designed in a dimensionally stable manner; at least one elastically deformable and in particular annular conveying element (22), in particular a conveying membrane, which together with the conveying chamber element (20) delimits the conveying chamber (18) and is arranged on the conveying chamber element (20); and at least one pressing unit (96), which is used to generate a non-uniform pressing force, in particular at least in a sealing area (102) between the conveying element (22) and the conveying chamber element (20) along the maximum total range of the sealing area (102), in particular along the maximum circumferential range between the conveying element (22) and the conveying chamber element (20), in a non-conveying state of the conveying element (22). According to the present invention, the clamping unit (96) is designed so that the conveying element (22) has an uneven compression along the maximum total range of the sealing area (102), in particular along the maximum circumferential range of the annular conveying element (22), at least in the non-conveying state of the conveying element (22), wherein due to the geometric design of the clamping surface (104) of the clamping element (98, 100) of the clamping unit (96), the conveying element (22) is compressed by the clamping unit (96) to different degrees along the maximum total range of the sealing area (102), in particular along the maximum circumferential range of the annular conveying element (22).

Description

Technical Field

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

[0002] DE 10 2017 104 400 A1 discloses a delivery device for conveying at least a fluid, wherein the known delivery device comprises: at least one delivery chamber; at least one dimensionally stable delivery chamber element, which at least partially delimits the delivery chamber; and at least one elastically deformable and in particular annular delivery element, which together with the delivery chamber element delimits the delivery chamber and is arranged on the delivery chamber element. DE 10 2017 104 400 A1 also discloses a pump having such a delivery device.

[0003] Furthermore, from US 2 885 966 ​​and US 3 922 119 conveying devices are known at least for conveying fluids, wherein these conveying devices comprise: at least one conveying chamber; at least one dimensionally stable conveying chamber element, which at least partially delimits the conveying chamber; at least one elastically deformable conveying element, which together with the conveying chamber element delimits the conveying chamber and is arranged on the conveying chamber element; and at least one pressing unit, which is used to generate an uneven pressing force at least in the sealing area between the conveying element and the conveying chamber element along the maximum total area of ​​the sealing area.

[0004] The invention is based in particular on the object of making available a delivery device and / or a pump of the initially described type, the properties of which are improved with regard to an advantageous delivery function. According to the invention, this object is achieved with the features of claim 1, while advantageous embodiments and improvements of the invention can be derived from the dependent claims. Summary of the invention

[0005] The present invention is based on a conveying device for conveying at least a fluid, which comprises: at least one conveying chamber; at least one dimensionally stable conveying chamber element, which at least partially delimits the conveying chamber; at least one elastically deformable and in particular annular conveying element (in particular a conveying membrane), which together with the conveying chamber element delimits the conveying chamber and is arranged on the conveying chamber element; and at least one clamping unit, which is used to generate a non-uniform pressing force along the maximum total area of ​​the sealing area (in particular along the maximum circumferential area between the conveying element and the conveying chamber element), in particular at least in the non-conveying state of the conveying element, at least in the sealing area between the conveying element and the conveying chamber element.

[0006] The invention proposes that the pressing unit is designed so that the conveying element, in particular at least in the non-conveying state of the conveying element, has a non-uniform compression along the maximum total extent of the sealing area, in particular along the maximum circumferential extent of the annular conveying element, wherein the conveying element is compressed to different degrees by the pressing unit due to the geometric design of the pressing surface of the pressing element of the pressing unit. The pressing unit is preferably used to generate a non-uniform pressing force distribution along the sealing line of the conveying element, which extends in particular in the circumferential direction of the conveying element. The non-uniform pressing force is preferably generated due to a special geometric design of the pressing surface of the pressing element and / or a special geometric design of the sealing extension of the conveying element. The design or development / distribution of the non-uniform pressing force depends in particular on the maximum force peak or maximum load peak along the sealing line, which is generated by the conveying of the fluid, in particular by the compression of the conveying element by the interaction of the conveying element and the conveying chamber element under the action of the drive unit of the pump comprising the conveying device. The pressing unit is preferably designed so that the sealing extension of the conveying element is compressed to different degrees at different positions along the conveying element or the sealing line, in particular due to the interaction of at least the pressing unit (in particular at least one pressing element of the pressing unit) and the sealing extension. The conveying element can have an elongated design (in particular an oblong design) or an annular design. The basic function of the pressing unit related to the generation of uneven pressing forces or uneven compression along the sealing line preferably depends on the shape of the conveying element. The conveying element can be designed in the form of a flat conveying film, an annular conveying film or different conveying films that are suitable for the skilled person, such as a flat plate or a disc-shaped conveying film. The geometric design of the pressing surface and the geometric design of the sealing extension that interacts with the pressing surface are preferably responsible for the generation of uneven pressing forces or uneven compression along the sealing line. The sealing extension is preferably arranged on the conveying side of the substrate of the conveying element. The conveying side of the substrate is preferably arranged on the side of the substrate facing away from the actuation side of the substrate. The conveying side particularly forms the outer side of the substrate. The actuation side preferably forms the inner side of the substrate. At least one actuation extension of the conveying element is preferably arranged on the actuation side. The actuation extension is preferably used to interact with a transmission element of a drive unit of a pump comprising the delivery device, in particular with at least two transmission elements of the drive unit. One or more transmission elements are preferably arranged on a drive element of a drive unit of a pump comprising the delivery device. The base body preferably has an annular design. The base body in particular has a slotted annular design.The base body, viewed in a plane, in particular in a plane extending at least substantially perpendicular to the drive axis of the drive shaft, has a cross-sectional shape which is substantially composed of a circular arc or an open circular ring and two inlet and / or outlet extensions, the circular arc or the open circular ring extending along an angular range of less than 360°, in particular greater than 90°, the inlet and / or outlet extensions extending transversely to the circular arc or the open circular ring and in particular directly adjoining the circular arc or the open circular ring in the end region of the circular arc or the open circular ring. Within the circular arc range or the circular ring range of the base body, the actuating extension is preferably arranged on the base body, in particular on the inner side of the base body. The maximum longitudinal range of the actuating extension is in particular at least 5%, preferably 10%, in particular at least 20% smaller than the maximum longitudinal range of the base body. The actuating extension preferably extends at least substantially along the entire range of the circular arc or the open circular ring of the base body, in particular to the end regions of the circular arc or the open circular ring, on which the inlet and / or outlet extensions of the base body are respectively arranged. The actuation extension extends on the actuation side in particular along an angular range of less than 360°, preferably less than 350°, and in particular greater than 180°.

[0007] In particular, in order to generate a vacuum in the conveyor chamber, the conveyor 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 the direction away from the actuating side. A vacuum, in particular referring to the atmospheric pressure around the conveyor device, of less than -0.1 bar, preferably less than -0.2 bar, in particular less than -0.3 bar, can preferably be generated by the movement of the conveyor element, in particular the conveyor membrane, away from the opposing surface. This makes it possible to advantageously convey the medium to be conveyed into the conveyor chamber of the conveyor device, which is at least partially delimited by the opposing surface and the conveying surface.

[0008] The conveying element (especially the conveying film) can preferably be driven by a drive unit, so that the conveying of the medium to be conveyed (especially the fluid) can be achieved according to the traveling wave principle (see, for example, the disclosure of EP 1 317 626 B1). The drive unit can be designed in the form of a mechanical drive unit, a magnetic drive unit, a piezoelectric drive unit, a hydraulic drive unit, a pneumatic drive unit, an electric drive unit, a magnetorheological drive unit, a carbon nanotube drive unit or a combination of drive units of the above types or in the form of different drive units that are suitable for those skilled in the art. The drive unit preferably has at least a drive element for acting on the conveying element (especially the conveying film). However, it is also conceivable that the drive unit has more than one drive element for acting on the conveying element. The drive element is preferably used to elastically deform the conveying element (especially the conveying film) when a driving force acts on the conveying element (especially the conveying film). The drive element can have any design that is suitable for those skilled in the art, such as a plunger, an extension, an engagement ring, a hook, a clamping element, etc. The drive element is preferably designed in the form of an eccentric shaft. Preferably, the eccentric shaft can be driven in rotation by a motor unit of a pump comprising the delivery device in a manner familiar to those skilled in the art. The motor unit can be designed in the form of an electric motor unit, an internal combustion engine unit, a hybrid motor unit, etc. The drive element preferably has an axis of rotation. The axis of rotation preferably extends transversely (in particular at least substantially perpendicularly) to a main delivery direction of the delivery chamber, along which the fluid can be delivered through the delivery chamber. The term "substantially perpendicular" in particular defines an alignment of a direction relative to a reference direction, wherein, in particular viewed in a projection plane, the direction and the reference direction include an angle of 90°, and the angle has a maximum deviation that is in particular less than 8°, preferably less than 5°, in particular less than 2°.

[0009] The conveying chamber of the conveying device is preferably defined by a base body of the conveying element and a conveying chamber element. The conveying chamber of the conveying device is defined in particular by a conveying surface and an opposing surface opposite to the conveying surface. The conveying chamber element is preferably designed in a dimensionally stable manner. The conveying chamber element preferably has a prestressed force, in particular for exerting a force on the conveying element in the direction of the clamping unit. The conveying element (in particular the conveying film) is preferably designed in an elastic manner. The term "elastic" refers in particular to the properties of an element (in particular the conveying element), which is in particular used to generate a reaction force, which depends on a shape change of the element (preferably proportional to the change) and offsets the change. The conveying element (in particular the conveying film) can preferably be deformed repeatedly, and in particular, the conveying element (in particular the conveying film) will not be mechanically damaged or destroyed thereby. The conveying element (in particular the conveying film) preferably tries to automatically restore the basic shape, in particular the basic shape of the convex curvature relative to the opposing surface, in particular the zero position of the conveying element (in particular the conveying film), in particular after deformation. The elastic design of the conveying element (particularly the conveying film) can preferably be influenced and / or formed at least in part by a specific geometric design of the substrate and / or by arranging the conveying element (particularly the conveying film) on the conveying chamber element with the opposite surface. The conveying element (particularly the conveying film) is preferably arranged on the conveying chamber element with the opposite surface so that the fluid is conveyed in and / or through the conveying chamber due to the groove of the conveying element (particularly the conveying film). After the driving force stops acting on the conveying element (particularly the conveying film) for conveying the fluid, the conveying surface of the conveying element (particularly the conveying film) preferably attempts to restore the convex curvature relative to the opposite surface in an at least substantially automatic manner, especially due to the elastic design. The conveying element (particularly the conveying film) is preferably made of a rubber-like and / or natural rubber-like material. However, it is also conceivable that the conveying device (particularly the conveying film) is composed of a combination of different materials or multiple materials that are considered suitable by a person skilled in the art, which realizes the elastic design of the conveying element (particularly the conveying film). The conveying element (particularly the conveying film) preferably utilizes the "groove effect" to convey the fluid into and / or through the conveying chamber. The conveying element, in particular the conveying surface, can preferably be at least temporarily recessed in order to convey the fluid, wherein at least one recess can be displaced along the conveying surface, in particular in a rolling manner, in order to convey the fluid. The term "for" in particular means a special construction, a special design and / or a special equipment. The term element and / or unit for a certain function in particular means that the element and / or unit realizes and / or implements the certain function at least in the application state and / or operating state.

[0010] The term "non-conveying state" refers in particular to a state of the conveying surface, in particular when viewed from at least a portion of the conveying surface, in which the conveying surface is not deformed, in particular is spaced apart from the opposite surface by a maximum distance, and in particular in at least a portion of the conveying surface, the action of the driving force for conveying the medium to be conveyed by the conveying surface is not influenced. Due to the design of the pressing unit, in particular due to the geometric design of the pressing surface, the conveying element preferably has a non-uniform compression at different positions of the sealing area along the maximum total range of the sealing area (in particular along the maximum circumferential range of the annular conveying element). Due to the geometric design of the pressing surface, the conveying element is compressed to different degrees by the pressing unit, in particular along the maximum total range of the sealing area (in particular along the maximum circumferential range of the annular conveying element). The design of the present invention can achieve a pressing force distribution that is adapted to the load caused by the fluid conveying in a particularly advantageous manner along the sealing line between the conveying chamber element and the conveying element. A sealing function adapted to the load can be advantageously achieved. Reliable conveying of the fluid can be achieved in a particularly advantageous manner. Reliable sealing can be advantageously achieved. Leakage can be advantageously prevented. Efficient conveying of the fluid can be advantageously achieved.

[0011] Furthermore, the invention proposes that the clamping unit has at least one clamping element, in particular at least one clamping ring, wherein the conveying element is designed in an annular manner and, in particular, the sealing extension of the conveying element is pressed against the inner circumference of the annular conveying chamber element with different strengths by the clamping element, in particular along the maximum total extent of the sealing area. The clamping element acts on the conveying element with a clamping force, which acts at least substantially parallel to the axis of rotation of the drive element of the drive unit. In this context, the term "substantially parallel" refers in particular to an alignment of a direction 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°, preferably less than 5°, in particular less than 2°. The clamping element preferably acts on the conveying element with an additional clamping force, which acts transversely to (in particular at least substantially perpendicular to) the axis of rotation of the drive element. The clamping element in particular comprises a circumferential collar for generating a clamping force, which acts on the conveying element substantially parallel to the axis of rotation of the drive element. The clamping unit preferably comprises at least two clamping elements (in particular at least two clamping rings), by means of which the conveying element (in particular the sealing extension of the conveying element) is pressed against the inner circumference of the annular conveying chamber element with different strengths, in particular along the maximum total extent of the sealing area. The conveying element is preferably arranged in the conveying chamber element between the at least two clamping elements. The design of the present invention can advantageously achieve a multi-dimensional clamping effect on the conveying element. A reliable seal can advantageously be achieved. Leakage can advantageously be prevented. An efficient conveying of the fluid can advantageously be achieved. A reliable conveying of the fluid can be achieved in a particularly advantageous manner.

[0012] In addition, the present invention further proposes that the clamping unit has at least one clamping element (especially the above-mentioned clamping element, especially at least one clamping ring), wherein the conveying element has at least one sealing extension (especially the above-mentioned sealing extension), and wherein the clamping element, especially at least along the circumferential direction of the conveying chamber element, uses a non-uniform clamping force along the circumferential direction to press the sealing extension against the conveying chamber element. The main direction of action of the non-uniform clamping force is preferably transverse to (especially at least substantially perpendicular to) the rotation axis of the drive element. The design of the present invention can advantageously achieve reliable sealing. Leakage can be advantageously prevented. Efficient conveying of fluid can be advantageously achieved. Reliable conveying of fluid can be achieved in a particularly advantageous manner.

[0013] In addition, the present invention also proposes that the clamping unit has at least one clamping element (especially at least one clamping ring), wherein the clamping element has a clamping surface, which has a variable height along the maximum longitudinal range of the clamping surface, especially in the circumferential direction of the clamping element, and especially has a variable distance from the surface (especially the inner surface) of the clamping element away from the clamping surface. The variable height of the clamping surface is preferably formed by different curvatures along the entire range of the clamping surface (especially along the circumferential direction extending in a plane at least substantially perpendicular to the rotation axis of the drive element). However, it is also conceivable that the variable height of the clamping surface is formed by different maximum height protrusions in the clamping surface, especially along the circumferential direction extending in a plane at least substantially perpendicular to the rotation axis of the drive element. It is also conceivable that the variable height of the clamping surface is formed by different maximum thicknesses of the edge of the clamping element (especially the collar of the clamping element), on which the clamping surface is arranged on the side of the clamping element provided with (sic) the conveying element. It is also conceivable that other designs of the clamping surface for realizing the variable height of the clamping surface that are considered suitable by those skilled in the art. The design of the present invention can advantageously achieve a multi-dimensional compression effect on the conveying element. It can advantageously achieve a reliable seal. It can advantageously prevent leakage. It can advantageously achieve efficient conveying of fluids. It can achieve reliable conveying of fluids in a particularly advantageous manner.

[0014] Furthermore, in particular alternatively or additionally, the invention also proposes that the conveying element has at least one sealing extension (in particular the above-mentioned sealing extension), which is pressed against the inner circumference of the annular conveying chamber element by the clamping unit and has a variable maximum thickness along the maximum longitudinal extent of the sealing extension (in particular along the circumferential direction of the conveying element). In particular, the maximum thickness is preferably formed by the maximum extent (in particular the maximum height) of the sealing extension, as viewed in a direction extending at least substantially perpendicular to the conveying surface. However, it is also conceivable that, in particular, the maximum thickness of the sealing extension is formed by the maximum extent of the sealing extension starting from the conveying surface, as viewed in a direction extending at least substantially perpendicular to the conveying surface. In particular, as an alternative or additional solution to the effect of the clamping element, the design of the invention can advantageously achieve a stronger effect of the clamping unit. A multidimensional clamping effect on the conveying element can advantageously be achieved. A reliable seal can advantageously be achieved. Leakage can advantageously be prevented. An efficient conveying of the fluid can advantageously be achieved. A reliable conveying of the fluid can be achieved in a particularly advantageous manner.

[0015] In addition, the present invention proposes that the clamping unit has at least one clamping element (especially the above-mentioned clamping element, especially at least one clamping ring) and at least one additional clamping element (especially at least one additional clamping ring), wherein the conveying element is designed in an annular manner and is pressed against the inner circumference of the annular conveying chamber element by the clamping element and the additional clamping element, and wherein the clamping element and the additional clamping element are arranged on the conveying element on opposite sides of the conveying element. In particular, the conveying element is preferably arranged between the clamping element and the additional clamping element, especially in the conveying chamber element, as viewed along the rotation axis of the drive element. The design of the present invention can advantageously achieve a higher clamping force of the conveying element against the conveying chamber element. The advantageous effects of the clamping unit can be achieved. The multi-dimensional clamping effect on the conveying element can be advantageously achieved. A reliable seal can be advantageously achieved. Leakage can be advantageously prevented. An efficient conveying of the fluid can be advantageously achieved. The reliable conveying of the fluid can be achieved in a particularly advantageous manner.

[0016] In addition, the present invention also proposes that the conveying chamber element has at least one groove (especially a sealing groove), which extends especially along the inner circumference of the annular conveying chamber element, wherein at least one sealing extension of the annular conveying element is pressed into the groove by a pressing element of a pressing unit (especially a clamping ring of the pressing unit), and wherein the compression of the sealing extension along the maximum longitudinal extent of the sealing extension (especially along the circumferential direction of the conveying element) is uneven. As an alternative or additional solution to the varying height of the pressing surface and / or the varying thickness of the sealing extension, it is also conceivable that the sealing groove has a varying height, especially for achieving an uneven pressing force along the sealing line. The design of the present invention can achieve the advantageous effects of the pressing unit. A multi-dimensional pressing effect on the conveying element can be advantageously achieved. A reliable seal can be advantageously achieved. Leakage can be advantageously prevented. An efficient conveying of the fluid can be advantageously achieved. A reliable conveying of the fluid can be achieved in a particularly advantageous manner.

[0017] In addition, a pump having at least one conveying device according to the invention is proposed. The pump is preferably used in the food sector, the chemical sector, the pharmaceutical sector (especially for applications that conform to mass production), the animal husbandry sector (aquariums, etc.), the household appliance sector, the dental hygiene sector, the automotive sector, the medical sector, the water treatment sector, etc. The design of the invention can achieve reliable fluid conveying in a particularly advantageous manner. Reliable sealing can be advantageously achieved. Leakage can be advantageously prevented. Efficient fluid conveying can advantageously be achieved. A compression force distribution can advantageously be achieved along the sealing line between the conveying chamber element and the conveying element, which is adapted in a particularly advantageous manner to the load caused by the fluid conveying.

[0018] In addition, the present invention further proposes that the pump includes at least one drive unit (especially the above-mentioned drive unit), the drive unit has at least one drive element (especially the above-mentioned drive element, in particular at least one eccentric shaft), and in particular along the circumferential direction extending around the drive axis of the drive unit, most of the eccentric shaft is surrounded by the conveying chamber element, the conveying element and the clamping unit. In particular, along the circumferential direction extending around the drive axis of the drive unit, the drive unit (especially at least the drive element) is preferably completely surrounded by the conveying chamber element, the conveying element and the clamping unit. The design of the present invention can advantageously realize a compact high-power pump. Easy maintainability can be advantageously achieved, especially because the conveying device as a whole can be removed from the housing together with the drive unit. The delivery of the medium to be conveyed can be achieved.

[0019] The pump of the present invention and / or the delivery device of the present invention are not limited to the above-mentioned applications and embodiments. The number of individual elements, components and units of the pump of the present invention and / or the delivery device of the present invention for realizing the functions described herein may in particular be different from the numbers mentioned herein. With regard to the numerical ranges specified in the present disclosure, the numerical values ​​within the described limit values ​​should also be considered to be disclosed and applicable arbitrarily. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other advantages appear in the following description of the drawings. The drawings show exemplary embodiments of the present invention. The drawings, the specification and the claims contain many features that are combined together. Those skilled in the art will also be able to easily consider these features individually and combine them to form other suitable combinations.

[0021] In the attached picture:

[0022] Figure 1 A schematic diagram of a pump according to the invention having a delivery device according to the invention is shown;

[0023] Figure 2 A schematic diagram of a pump of the present invention is shown with an open housing;

[0024] Figure 3 shows a schematic cross-sectional view of a pump of the present invention;

[0025] Figure 4 Another schematic cross-sectional view of a pump of the present invention is shown;

[0026] Figure 5 A schematic diagram showing the delivery device of the present invention in a state removed from the housing of the pump;

[0027] Figure 6 A schematic diagram showing a conveying element of a conveying device of the present invention;

[0028] Figure 7 A schematic diagram showing a conveying chamber element of a conveying device of the present invention;

[0029] Figure 8 A schematic partial cross-sectional view of a conveying element and a conveying chamber element is shown;

[0030] Fig. 9 A schematic diagram showing a pressing element of a pressing unit of a conveying device according to the present invention; and

[0031] Fig.10 A schematic diagram showing a fluid supply pipe joint or a fluid discharge pipe joint of a conveying device of the present invention. DETAILED DESCRIPTION

[0032] Figure 1A pump 10 is shown with a delivery device 12 for delivering at least a fluid (not shown). The delivery device 12 is designed for delivering at least a fluid, in particular when a drive unit 16 of the pump 10 acts on the delivery device 12, in particular 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 dimensionally stable delivery chamber element 20, which at least partially delimits the delivery chamber 18; and at least an elastically deformable, in particular annular, delivery element 22, which together with the delivery chamber element 20 delimits the delivery chamber 18 and is arranged on the delivery chamber element 20 (see Figure 4 ). The conveying element 22 is preferably designed in the form of a conveying film. The conveying chamber element 20 is at least largely (especially completely) made of plastic (especially injection-molded plastic). However, it is also conceivable that the conveying chamber element 20 is made of a different material that is considered suitable by a person skilled in the art. The conveying element 22 is preferably at least largely (especially completely) made of rubber (especially synthetic rubber, such as EPDM, FC or NBR, etc.). However, it is also conceivable that the conveying element 22 is made of a different material that is considered suitable by a person skilled in the art.

[0033] The pump 10 comprises at least a drive unit 16 for acting on the delivery device 12 and at least one housing 14 for accommodating the delivery device 12. The drive unit 16 preferably comprises at least one drive element 24 for acting on the delivery device 12 (see Figure 4 ). The drive element 24 is preferably designed in the form of an eccentric shaft. However, it is also conceivable that the drive element 24 has a different design that appears suitable to the person skilled in the art, for example in the form of a rotationally symmetrical shaft, on which at least one cam for acting on the conveying device 12 is arranged, etc. The drive element 24 can be connected directly (in particular in a rotationally fixed manner) or indirectly (for example via a gear unit or an arrangement consisting of at least one gear element) to a drive shaft of a motor unit (not shown), such as an electric motor, an internal combustion engine, a pneumatic engine, etc. The drive element 24 has an axis of rotation 26, which extends transversely (in particular at least substantially perpendicularly) to a main conveying direction, along which the fluid can be conveyed through the conveying chamber 18.

[0034] The delivery device 12 is preferably at least mostly (especially completely) arranged in the housing 14. The delivery device 12 is at least mostly (especially completely) surrounded by the housing 14. It is known to those skilled in the art that the housing 14 is particularly used to at least partially (especially completely) enclose and / or support the delivery device 12 and / or the drive unit 16 of the pump 10. The housing 14 can be made of plastic, metal, a combination of plastic and metal or different materials that are suitable for those skilled in the art. The housing 14 can have a shell-like design, a can-like design, a combination of a shell-like design and a can-like design or different designs that are suitable for those skilled in the art.

[0035] 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, i.e., such that the conveyor chamber element 20 (in particular the conveyor device 12 as a whole) can be removed from the housing 14. The conveyor chamber element 20 (in particular the conveyor device 12 as a whole) can preferably be removed from the housing 14 after removing the upper housing part 36, in particular together with the conveyor element 22 arranged on the conveyor chamber element 20. The conveyor device 12 can preferably be removed from the housing 14 as a whole (in particular after removing the upper housing part 36 of the housing 14), so that the housing does not affect the removal of individual components of the conveyor device 12. In particular, when the conveyor device 12 (in particular the conveyor device 12 as a whole) is arranged in the housing 14, the housing 14 at least mainly surrounds at least the conveyor chamber element 20 (in particular the conveyor device 12) along a circumferential direction extending in a plane substantially perpendicular to the drive axis 70 of the drive unit 16.

[0036] 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 adjoining the housing 14 (see Figure 2). When the conveying device 12 is arranged in the housing 14, the conveying device 12 at least substantially completely surrounds the drive unit 16, in particular along a circumferential direction extending in a plane at least substantially perpendicular to the drive axis 70 of the drive unit 16. When the conveying device 12 is arranged in the housing 14, the outer side of the conveying chamber element 20 is connected to the inner side of the housing 14 in a frictional and / or form-fitting manner, and particularly preferably directly adjoins the inner side of the housing 14. When the conveying device 12 (in particular the conveying device 12 as a whole) is arranged in the housing 14, the outer side of the conveying chamber element 20 preferably at least partially adjoins the inner side of the housing 14, in particular at least the inner side of the lower housing part 72 of the housing 14. The conveying chamber element 20 preferably adjoins the inner side of the housing 14, in particular the inner side of the lower housing part 72 of the housing 14, with more than 30% (preferably more than 40% and less than 95%, in particular 40% to 60%) of the entire outer surface of its outer side. The housing 14 preferably has a recess, in which the conveying device 12 can be arranged or is particularly arranged. The recess of the housing 14, in particular the recess of the lower housing part 72, is preferably defined by an annular extension in the interior of the housing 14, in particular the lower housing part 72. In particular, the annular extension extends over less than 360°, so as to allow the inlet and outlet regions of the conveying device 12 to be arranged in the housing 14, in particular in the lower housing part 72.

[0037] In addition, the housing 14 further comprises at least one receptacle 32 (in particular at least two receptacles 32, 34) for accommodating at least one fluid supply pipe connection 28 and / or at least one fluid discharge pipe connection 30 of the conveying device 12. The fluid supply pipe connection 28 is preferably used to connect to a fluid pipe, in particular to supply fluid to the conveying chamber 18. The fluid discharge pipe connection 30 is preferably used to connect to a fluid pipe, in particular to discharge fluid from the conveying chamber 18. The receptacle 32 and / or the receptacle 34 are preferably arranged in an upper housing portion 36 of the housing 14 (see Figure 1 and Figure 3 ). However, it is also conceivable that the socket 32 ​​and / or the socket 34 are arranged in another component of the housing 14, for example, in the lower housing part 72 or the like. The fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 are preferably connected to the socket 32 ​​and / or the socket 34 by a form fit and / or a friction connection, in particular fixed to the socket 32 ​​and / or the socket 34. For example, the socket 32 ​​and / or the socket 34 include an internal thread on the inside for fixing the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 to the housing 14, in particular to the upper housing part 36 (see Figure 3). However, it is also conceivable that the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 are arranged (especially fixed) on the socket 32 ​​and / or the socket 34 by different connection methods (especially a non-threaded form-fit connection method formed by, for example, insertion 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 (especially the upper housing part 36) to the inside of the housing 14 (especially the upper housing part 36). The socket 32 ​​and / or the socket 34 are preferably designed in the form of a through hole from the outside to the inside of the housing 14. When the conveying device 12 is arranged in the housing 14, the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 extend from the conveying chamber element 20 at least to the outside of the housing 14 (especially extend beyond), especially when the connecting piece 38 of the conveying chamber element 20 is connected to the fluid supply pipe connector 28 and / or especially when the additional connecting piece 40 of the conveying chamber element 20 is connected to the fluid discharge pipe connector 30 (see Figure 3 ).

[0038] The connecting element 38 and / or in particular the additional connecting element 40 are respectively arranged on at least one transverse extension 60, 62 of the conveying chamber element 20, in particular are designed integrally with the corresponding transverse extension 60, 62 (see Figure 2 , Figure 3 , Figure 5 and Figure 7). Viewed in a plane, in particular a plane extending at least substantially perpendicularly to the rotation axis 26 of the drive element 24, in particular the drive axis 70 of the drive unit 16, the conveying chamber element 20 has in particular a cross-sectional shape which is substantially composed of a circular arc or an open circular ring, which extends along an angular range of less than 360°, in particular greater than 90°, and two transverse extensions 60, 62 which extend transversely to the circular arc or the open circular ring and in particular directly adjoin the circular arc or the open circular ring in the end region of the circular arc or the open circular ring. The connecting element 38 and / or in particular the additional connecting element 40 respectively have a main axis 64, 66 which extends transversely (in particular at least substantially perpendicularly) to a main plane of at least one transverse extension 60, 62, in particular the respective transverse extension 60, 62. The main axis 64 and / or the main axis 66 of the connecting element 38 and / or in particular the additional connecting element 40 preferably extend transversely (in particular at least substantially perpendicularly) to a main conveying direction of the conveying chamber 18, along which the fluid can be conveyed through the conveying chamber 18. The main axis 64 and / or the main axis 66 of the connecting element 38 and / or in particular the additional connecting element 40 preferably extend at least substantially parallel to a plane which is at least substantially perpendicular to the axis of rotation 26 of the drive element 24. The connecting element 38 and in particular the additional connecting element 40 are arranged on a side of the conveying chamber element 20 facing away from the conveying element 22 (in particular the outer side) so that they are aligned in different ways, in particular in an opposite way. The connecting element 38 and in particular the additional connecting element 40 preferably extend from the outer side of the conveying chamber element 20 in different directions, in particular in opposite directions. The connecting element 38 and in particular the additional connecting element 40 preferably extend in a direction facing away from the conveying chamber element 20 and are aligned in an opposite way from the outer side of the conveying chamber element 20.

[0039] When viewed along the main axis 64 and / or the main axis 66 of the connecting element 38 and / or in particular the additional connecting element 40, the connecting element 38 and / or in particular the additional connecting element 40 are spaced apart from the inner wall of the housing 14 (in particular at least the upper housing part 36 and / or the lower housing part 72) when the conveying device 12 is arranged in the housing 14 (see Figure 2 and Figure 3). When the conveying device 12 is arranged in the housing 14, the connecting piece 38 and / or in particular the additional connecting piece 40 are preferably spaced apart from the inner wall of the housing 14 along the entire circumference of the connecting piece 38 and / or in particular the additional connecting piece 40, in particular from the inner side of the upper housing part 36 and / or from the inner side of the lower housing part 72. The minimum distance of the connecting piece 38 and / or in particular the additional connecting piece 40 from the inner wall of the housing 14 (in particular from the inner side of the upper housing part 36 and / or from the inner side of the lower housing part 72) is preferably greater than 0.001 mm, in particular greater than 0.01 mm, in particular greater than 0.1 mm and less than 10 mm. The minimum distance of the connecting piece 38 and / or in particular the additional connecting piece 40 from the inner wall of the housing 14 (in particular from the inner side of the upper housing part 36 and / or from the inner side of the lower housing part 72) preferably has a value in the range between 0.1 mm and 5 mm. However, in an alternative design of the pump 10, it is also conceivable that, when the delivery device 12 is arranged in the housing 14, the connecting member 38 and / or in particular the additional connecting member 40 is adjacent to the inner wall of the housing 14 (in particular adjacent to the inner side of the upper housing part 36 and / or the inner side of the lower housing part 72), and is supported on the inner wall of the housing 14, in particular on the inner side of the upper housing part 36 and / or the inner side of the lower housing part 72.

[0040] The conveying chamber element 20 comprises at least a connection piece 38 for the fluid supply line connection 28, which is in particular designed to be different from a hose and / or at least an additional connection piece 40 for the fluid discharge line connection 30, which is in particular designed to be different from a hose, wherein the connection piece and / or the additional connection piece are respectively arranged on a side of the conveying chamber element 20 facing away from the conveying element 22 (in particular on the outside) (see Figure 2 , Figure 3 , Figure 5 and Figure 7 The fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 are preferably designed in a tubular manner. The fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 preferably have a conically extending insertion end 44, 46 (see Figure 3 and Fig.10). When the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 are arranged on the conveying chamber element 20, the insertion ends 44, 46 of the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 are respectively arranged in the connecting piece 38 or in particular in the additional connecting piece 40. The fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 preferably include a coupling end 48, 50 for connecting to a supply pipe or a discharge pipe for supplying fluid from the conveying chamber 18 or discharging fluid to the conveying chamber 18, respectively. It is also conceivable that the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 are used to produce a connection with different components (e.g., fluid couplings, hose connectors, etc.) that are considered suitable by a person skilled in the art. The coupling ends 48, 50 are arranged on the side of the fluid supply pipe connector 28 or the fluid discharge pipe connector 30 that faces away from the insertion ends 44, 46. The fluid supply pipe connector 28 and the fluid discharge pipe connector 30 preferably have at least essentially the same design. However, it is also conceivable that the fluid supply line connection 28 and the fluid discharge line connection 30 are designed at least partially in a different manner, for example in the form of a functional unit 58 or the like.

[0041] 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 line connection 28 and / or a fluid discharge line connection 30, wherein the functional unit 58 is at least partially, in particular completely, arranged in the fluid supply line connection 28 and / or the fluid discharge line connection 30 (see Figure 2 , Figure 3 and Fig.10 ). The functional unit 58 is preferably at least partially (especially completely) permanently integrated into the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30, or at least partially (especially completely) replaceably arranged in the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30. For example, the functional unit 58 can have one or especially two filters and / or valve cores, which are respectively arranged in the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30. Similarly, different designs or arrangements of the functional unit 58 that are considered suitable by those skilled in the art can also be envisaged, such as being arranged between the connector 38 and the fluid supply pipe connector 28 or especially between the additional connector 40 and the fluid discharge pipe connector 30, etc.

[0042] The fluid supply pipe connection 28 and / or the fluid discharge pipe connection 30 are arranged on the housing 14, in particular on the upper housing part 36 and / or on the conveying chamber element 20 in a removable manner. The pump 10 comprises at least one fixing unit 42 for fixing the fluid supply pipe connection 28 and / or the fluid discharge pipe connection 30 on the housing 14, in particular on the upper housing part 36, by a form fit and / or a friction connection. The fixing unit 42 preferably comprises an external thread (in particular two external threads), which is in particular arranged on the outer side of the insertion hole 32 and / or the insertion hole 34 (see Figure 1 ). It is conceivable that the fixing unit 42 includes at least one nut (not shown) (in particular two nuts) which interact with the external thread and in particular firmly clamp the collar of the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 so as to fix the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 on the housing 14. Preferably, the fixing unit 42 may alternatively or additionally include at least an internal thread provided on the sockets 32, 34. Furthermore, it is also conceivable that the fixing unit 42 may alternatively or additionally include different components which are deemed suitable by a person skilled in the art for fixing the fluid supply pipe connector 28 and / or the fluid discharge pipe connector 30 on the housing 14, in particular on the upper housing part 36, by form fit and / or friction connection (e.g. fixing ring, fixing pin, etc.).

[0043] The conveying device 12 comprises at least one motion compensation unit 52, which is used at least partially to compensate and / or suppress the relative movement between the fluid supply pipe connection 28 and the connecting piece 38 when the connecting piece 38 is connected to the fluid supply pipe connection 28, and / or to compensate and / or suppress the relative movement between the fluid discharge pipe connection 30 and in particular the additional connecting piece 40 when the additional connecting piece 40 is connected to the fluid discharge pipe connection 30 (see Figure 3). The motion compensation unit 52 preferably comprises at least one damping element 54 (in particular at least two damping elements 54, 56). The damping element 54 and / or the damping element 56 are preferably designed in the form of an O-ring. However, it is also conceivable that the damping element 54 and / or the damping element 56 have different designs that a person skilled in the art considers suitable, such as in the form of an elastomeric disc, a hollow elastomeric cylinder, etc. Preferably, the damping elements 54, 56 are respectively arranged between the connecting piece 38 and the fluid supply pipe connector 28 or in particular between the additional connecting piece 40 and the fluid discharge pipe connector 30. The damping element 54 and / or the damping element 56 are in particular adjacent to the inner side of the connecting piece 38 and the outer side of the insertion end 44 of the fluid supply pipe connector 28, and / or in particular adjacent to the inner side of the additional connecting piece 40 and the outer side of the insertion end 46 of the fluid discharge pipe connector 30. In addition to damping the movement, the damping element 54 and / or the damping element 56 preferably also serves to produce a fluid seal between the connection piece 38 and the fluid supply pipe connection 28 and / or for producing a fluid seal between the additional connection piece 40 and the fluid discharge pipe connection 30 , respectively.

[0044] The conveying element 22 comprises at least one base body 76 which is designed in particular at least substantially in an annular manner (see Figure 3 and Figure 6 ), wherein the base body 76 is elastically deformable and has at least one conveying surface 78 arranged on the conveying side of the base body 76. In addition, the conveying element 22 preferably comprises at least one actuating extension 80 (in particular a plurality of actuating extensions 80) for connection to at least one transmission element 82 of the drive unit 16, which interacts with the actuating extension 80 (in particular a plurality of actuating extensions 80) on the actuating side of the base body 76. The conveying side of the base body 76 is preferably arranged on the base body 76 on the side of the base body 76 facing away from the actuating side of the base body 76. The conveying side forms in particular the outer side of the base body 76. The actuating side preferably forms the inner side of the base body 76. The inner side of the base body 76 is in particular at least partially formed by the actuating side. The actuating extension 80 (in particular a plurality of actuating extensions 80) is in particular designed 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 fit and / or friction connection as deemed suitable by a person skilled in the art.

[0045] The actuation extension 80 (in particular a plurality of actuation extensions 80) is designed in the form of a form-fitting and / or frictional engagement element, which interacts with the transmission element 82 via a form-fitting and / or frictional connection (in particular a loosely coupled form-fitting and / or frictional connection) in order to at least transmit a drive force acting in a direction away from the actuation side. The actuation extension 80 (in particular a plurality of actuation extensions 80) is preferably clamped between two transmission elements 82 (in particular transmission rings), which are arranged on the drive element 24 (see Figure 4 In particular, a maximum longitudinal extent of the actuation extension 80 (in particular a plurality of actuation extensions 80 ), viewed along a circumferential direction extending around the drive axis 70 of the drive unit 16 , is smaller than a maximum longitudinal extent of the base body 76 .

[0046] The base body 76 preferably has a cross-sectional shape, viewed in a plane (in particular in a plane extending at least substantially perpendicular to the drive axis 70), which is substantially composed of a circular arc or an open circular ring and two inlet and / or outlet extensions extending transversely to the circular arc or the open circular ring. The circular arc or the open circular ring of the cross-sectional shape of the base body 76 preferably extends along an angular range of less than 360° (in particular greater than 90°). The inlet and / or outlet extensions of the cross-sectional shape of the base body 76 extending transversely to the circular arc or the open circular ring are preferably arranged so that these inlet and / or outlet extensions directly adjoin the circular arc or the open circular ring, in particular in the end region of the circular arc or the open circular ring. The actuation extension 80 (in particular a plurality of actuation extensions 80) preferably extends along a closed circular ring, wherein the actuation extension 80 (in particular a plurality of actuation extensions 80) can form the circular ring itself. In particular, 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 at least 5%, preferably at least 10%, in particular 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, in particular together, extend on the actuation side along an angular extent of more than 270°, preferably less than 360° or 360°.

[0047] The conveying chamber element 20 surrounds the conveying element 22 at least for the most part along a circumferential direction, in particular extending in a plane at least substantially perpendicular to the drive axis 70 of the drive unit 16 (see Figure 3 and Figure 5). The conveying chamber element 20 is designed in an annular manner. In particular, when viewed in a plane extending at least substantially perpendicularly to the drive axis 70 of the drive unit 16, the conveying chamber element 20 and the conveying element 22 preferably have at least substantially similar shapes. The conveying chamber element 20 and the conveying element 22 (in particular the base body 76 of the conveying element 22) in particular have a basic shape similar to the Greek capital letter Omega, wherein the extension of the conveying chamber element 20 and the conveying element 22 preferably forms an angle of 90° relative to the extension of the Greek capital letter Omega.

[0048] The conveying chamber element 20 has a counter surface 74 which interacts with the conveying surface 78 of the conveying element 22 for conveying the fluid, wherein the counter surface faces the conveying element 22 and has at least one protrusion 84, 86 pointing in the direction of the conveying element 22 (see Figure 4 , Figure 7 and Figure 8 ). The opposing surface 74 preferably comprises at least two projections 84, 86 pointing in the direction of the conveyor element 22. Viewed in the circumferential direction, the projections 84 and / or the projections 86 extend along at least substantially the entire inner side of the conveyor chamber element 20, which extends in particular in the shape of an arc of a circle. The projections 84 and / or the projections 86 preferably extend along an arc of a circle or an open circle from one of the transverse extensions 60, 62 to the other transverse extension 60, 62 over the inner side of the conveyor chamber element 20.

[0049] The conveying element 22, in particular the base body 76, has a conveying surface 78 which, viewed in a cross section of the conveying element 22, in particular the cross section of the conveying chamber 18, has a maximum lateral extent which at least substantially, 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, the conveying surface 78 can be placed completely against the opposite surface 74 of the conveying chamber element 20, in particular under the effect of the driving force that can be generated by the drive unit 16. Observed in 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 segments. The arc segments form the opposite surface 74. Two of the three arc segments form projections 84, 86 of the opposite surface 74 and are arranged on the outside. One of the three arc segments forms a depression and is arranged on the inside, in particular between the projections 84, 86. It is conceivable that the three arc segments have different or identical radii.

[0050] The conveyor chamber element 20 has at least one connecting region, in particular at least one connecting groove, preferably a sealing groove 88, which is arranged in particular on the inner side of the conveyor chamber element 20, wherein when the conveyor element 22 is arranged on the conveyor chamber element 20, at least one edge region of the conveyor element 22, in particular an extension of the conveyor element 22 arranged on the edge of the conveyor element 22 (preferably a sealing extension 90), engages in the sealing groove in a sealing manner (see Figure 4 and Figure 8 ). The conveying element 22 has at least a sealing extension 90, which is designed integrally with the base body 76 of the conveying element 22 and, when the conveying element 22 is arranged on the conveying chamber element 20, is at least partially arranged in the sealing groove 88 of the conveying chamber element 20. The sealing groove 88 is designed so that the sealing extension 90 and an edge region 92 of the conveying chamber element 20 that defines the sealing groove 88 adjoin each other flatly. The sealing groove 88 and the edge region 92 of the conveying chamber element 20 that defines the sealing groove 88 are designed so that the sealing extension 90 adjoins flatly the edge region 92 of the conveying chamber element 20 that defines the sealing groove 88 and the groove bottom 94 of the sealing groove 88, which is arranged on the side of the sealing groove 88 facing the conveying surface 78 of the base body 76 of the conveying element 22. The sealing groove 88 extends completely around the opposite surface 74 of the conveying chamber element 20 and defines the opposite surface 74, which interacts with the conveying surface 78 of the base body 76 of the conveying element 22 to convey the fluid. The sealing groove 88 preferably extends on the transverse extension 60, 62 of the conveying chamber element 20 around the respective inlet or outlet in the respective transverse extension 60, 62 and in particular transitions in a seamless manner into the annular inner side of the conveying chamber element 20 in order to define the opposing surface 74. The sealing groove 88 preferably extends along the entire inner edge region of the conveying chamber element 20. The conveying chamber element 20 has an opposing surface 74 for interacting with the conveying surface 78 of the base body 76 of the conveying element 22 in order to convey the fluid, wherein in particular when viewed in cross section, the opposing surface 74 extends over at least three circular arc segments arranged in succession, wherein at least the edge region 92 of the conveying chamber element 20 that defines the sealing groove 88 is arranged such that it in particular directly adjoins at least one circular arc segment (in particular the outer circular arc segment) of the three circular arc segments.

[0051] The sealing extension 90 extends completely around the conveying surface 78 of the base body 76 of the conveying element 22 and delimits the conveying surface 78. The sealing extension 90 preferably extends along the entire circumference of the base body 76. The sealing extension 90 preferably extends around the inlet and / or outlet extension of the base body 76 and in particular transforms into the annular basic shape of the base body 76 in a seamless manner in order to delimit the conveying surface 78. The sealing extension 90 preferably has a transition region towards an edge region of the base body 76 of the conveying element 22, wherein the cross section of the transition region differs from the cross section of an additional transition region of the sealing extension 90 towards the conveying surface 78 of the base body 76 (see Figure 8 ).

[0052] Furthermore, the conveying device 12 comprises at least one pressing unit 96, which has at least one pressing element 98, 100 (in particular at least one clamping ring), which is designed to act with a pressing force on the sealing extension 90 in the direction of the conveying chamber element 20 and to compress 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 above the conveying surface 78 in a direction extending transversely (in particular at least substantially perpendicularly) to the conveying surface 78 of the base body 76 of the conveying element 22. In particular, at least in the non-conveying state of the conveying element 22, the pressing unit 96 serves to generate an uneven pressing force at least in a sealing area 102 between the conveying element 22 and the conveying chamber element 20 along the maximum total extent of the sealing area 102 (in particular along the maximum circumferential extent between the conveying element 22 and the conveying chamber element 20). The sealing area 102 is preferably formed by the interaction of the sealing groove 88 and the sealing extension 90. The pressing unit 96 is preferably used to generate an uneven pressing force distribution along a sealing line of the conveying element 22, which extends in particular in the circumferential direction of the conveying element 22. The sealing line is preferably formed by the sealing extension 90.

[0053] The pressing unit 96 is preferably designed such that the conveying element 22 is compressed unevenly, in particular along the maximum total extent of the sealing area 102 or the sealing line, in particular along the maximum circumferential extent of the annular conveying element 22, at least in the non-conveying state of the 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 designed in an annular manner and is pressed against the inner circumference of the annular conveying chamber element 20 by the pressing element 98, 100. The pressing unit 96 preferably 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. The conveying element 22 can preferably be pressed against the inner circumference of the annular conveying chamber element 20 by the pressing elements 98, 100. When the pressing elements 98, 100 act on the conveying element 22, the sealing extension 90 is pressed in particular into the sealing groove 88. The pressing unit 96 has at least a pressing element 98, 100 (in particular at least a clamping ring), wherein the conveying element 22 has at least a sealing extension 90, and wherein the pressing elements 98, 100 press the sealing extension 90 against the conveying chamber element 20, in particular at least along the circumferential direction of the conveying chamber element 20, in particular with a non-uniform pressing force along the circumferential direction. The pressing unit 96 has at least a pressing element 98, 100 (in particular at least a clamping ring), which has a pressing surface 104, wherein the pressing surface has a varying height along the maximum longitudinal extent of the pressing surface 104, in particular extending along the circumferential direction of the pressing elements 98, 100, in particular a varying distance from a surface (in particular an inner surface) of the pressing elements 98, 100 facing away from the pressing surface 104. The varying height of the pressing surface 104 is preferably formed by different maximum heights of the pressing surface 104 along the circumferential direction. As an example, Fig. 9Three different positions 106, 108, 110 on the pressing element 98 are shown with dashed lines, where the pressing surface 104 is used to produce different degrees of compression of the sealing extension 90. The pressing surface 104 has different maximum heights, in particular at the three different positions 106, 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 other positions of the pressing element 98, by changing the geometric extent of the pressing surface 104 on the side of the pressing element 98 facing the conveying element 22 or in different ways that are considered suitable by a person skilled in the art. For example, due to the varying heights, the sealing extension 90 is compressed to different degrees at the positions 106, 108, 110. For example, at the position 106, the sealing extension 90 is compressed in particular by more than 10%, preferably more than 15%, in particular more than 20%, in particular more than 22% of the maximum thickness 68 of the sealing extension 90. For example, at position 108, the sealing extension 90 is particularly compressed by more than 5%, preferably more than 10%, especially more than 15%, and in particular more than 19% of the maximum thickness 68 of the sealing extension 90. For example, at position 110, the sealing extension 90 is particularly compressed by more than 4%, preferably more than 8%, especially more than 14%, and in particular more than 16% of the maximum thickness 68 of the sealing extension 90.

[0054] The pressing unit 96 has at least a pressing element 98, in particular at least a clamping ring, and at least one additional pressing element 100, in particular at least one additional clamping ring, wherein the conveying element 22 is designed in an annular manner and is pressed against the inner circumference of the annular conveying chamber element 22 by the pressing element 98 and the additional pressing element 100, and wherein the pressing element 98 and the additional pressing element 100 are arranged on the conveying element 22 on opposite sides of the conveying element 22. The pressing element 98 and the additional pressing element 100 of the pressing unit 96 preferably have an at least substantially similar design. The pressing element 98 and the additional pressing element 100 are arranged mirror-symmetrically on the conveying chamber element 20, 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 has at least one such groove, preferably a sealing groove 88, which extends in particular along the inner circumference of the annular conveying chamber element 20 and into which in particular at least the sealing extension 90 of the annular conveying chamber element 22 is pressed by a pressing element 98, in particular a clamping ring, and / or by an additional pressing element 100 of a pressing unit 96, wherein the sealing extension 90 is compressed unevenly along the maximum longitudinal extent of the sealing extension 90, in particular along the circumferential direction of the conveying element 22. As an alternative or in addition to the varying height of the pressing surface 104 of the pressing element 98 and / or the additional pressing element 100, it is conceivable that the conveying element 22 has at least the sealing extension 90, which is pressed against the inner circumference of the annular conveying chamber element 20 by the pressing unit 96 and has a varying maximum thickness 68 along the maximum longitudinal extent of the sealing extension 90, in particular along the circumferential direction of the conveying element 22. Likewise, different designs of the pressing unit 96 for producing an uneven compression of the sealing extension 90 in the circumferential direction in the sealing region 102 are conceivable which appear suitable to the person skilled in the art.

Claims

1. A conveying device for conveying at least a fluid, comprising: At least one conveying chamber (18); at least one dimensionally stable conveying chamber element (20), the conveying chamber element (20) at least partially delimiting the conveying chamber (18); at least one elastically deformable conveying element (22), the conveying element (22) delimiting the conveying chamber (18) together with the conveying chamber element (20) and the conveying element (22) being arranged on the conveying chamber element (20); and at least one pressing unit (96), the at least one pressing unit (96) being used to hold the conveying element (22) and the conveying chamber element in a non-conveying state. The at least one pressing unit (96) is designed to provide a non-uniform pressing force in a sealing area (102) between the conveying element (20) and along the maximum total range of the sealing area (102), wherein the at least one pressing unit (96) is designed so that the conveying element (22) has a non-uniform compression along the maximum total range of the sealing area (102) at least in a non-conveying state of the conveying element (22), wherein due to the geometric design of the pressing surface (104) of the pressing element of the at least one pressing unit (96), the conveying element (22) is compressed to different degrees by the pressing unit (96) along the maximum total range of the sealing area (102), in, The at least one pressing unit (96) has at least one pressing element, wherein the at least one pressing element has a pressing surface (104), and the pressing surface (104) has a varying distance from a surface of the at least one pressing element facing away from the pressing surface (104) along the maximum longitudinal extent of the pressing surface (104).

2. The conveying device according to claim 1, characterized in that The conveying element (22) is designed in an annular manner and is pressed against the inner circumference of the conveying chamber element (20) by the at least one pressing element.

3. The conveying device according to claim 1 or 2, characterized in that: The conveying element (22) has at least one sealing extension (90), and wherein the at least one pressing element presses the at least one sealing extension (90) against the conveying chamber element (20) at least along the circumferential direction of the conveying chamber element (20) using an uneven pressing force along the circumferential direction.

4. The conveying device according to claim 1, characterized in that The conveying element (22) has at least one sealing extension (90), which is pressed against the inner circumference of the conveying chamber element (20) by the at least one clamping unit (96), and along the maximum longitudinal extent of the at least one sealing extension (90), the at least one sealing extension (90) has a varying maximum thickness (68).

5. The conveying device according to claim 1, characterized in that: The at least one clamping unit (96) comprises: at least one clamping element (98); and at least one additional clamping element (100); wherein the conveying element (22) is designed in an annular manner and is pressed against the inner circumference of the conveying chamber element (20) by the at least one clamping element (98) and the at least one additional clamping element (100), and wherein the at least one clamping element (98) and the at least one additional clamping element (100) are arranged on the conveying element (22) on opposite sides of the conveying element (22).

6. The conveying device according to claim 1, characterized in that: The conveying chamber element (20) has at least one groove, which extends along the inner circumference of the conveying chamber element (20), wherein at least one sealing extension (90) of the conveying element (22) is pressed into the at least one groove by the pressing element of the at least one pressing unit (96), and wherein the compression of the at least one sealing extension (90) is uneven along the maximum longitudinal extent of the at least one sealing extension (90).

7. A pump having at least one delivery device according to any one of the preceding claims 1 to 6.

8. The pump according to claim 7, characterized in that The invention comprises at least one drive unit (16), wherein the at least one drive unit (16) has at least one drive element (24), wherein the at least one drive element (24) is at least one eccentric shaft, and when viewed along a circumferential direction extending around a drive axis (70) of the at least one drive unit (16), a majority of the at least one eccentric shaft is surrounded by the conveying chamber element (20), the conveying element (22) and the at least one clamping unit (96).

Images