RU2796993C1 - Pumping device, at least, for pumping a fluid, and a pump containing such pumping device - Google Patents

Abstract

FIELD: pump devices.

SUBSTANCE: pumping device, at least for pumping a fluid medium, with at least one pumping chamber (18), at least one dimensionally stable pumping chamber element (20), at least partially delimits the pumping chamber (18), and at least one resiliently deformable and, in particular, annular pumping element (22), in particular a pumping membrane, which limits the pumping chamber (18) together with the pumping chamber element (20) and is placed on the pumping chamber element (20). The pumping element (22) has at least one sealing extension (90), which is integral with the main body (76) of the pumping element (22) and is at least partially located in the sealing groove (88) of the pumping chamber element (20) when the pumping element (22) is placed on the pumping chamber element (20). The pumping chamber element (20) has an opposite surface (74) for interaction with the pumping surface (78) of the main body (76) of the pumping element (22) to pump the fluid. The specified opposite surface extends over at least three circular arc-shaped sections, which are placed in series, in particular when viewed in cross section, and at the same time at least one edge area (92) of the pumping chamber element (20), limiting the sealing groove (88) is placed so that it borders directly on at least one of the three circular arc-shaped sections.

EFFECT: ensuring the availability of a pumping device and/or a pump that has(ve) improved properties with respect to the primary pumping function.

9 cl, 10 dwg

Description

Prior Art Documents

The invention relates to a pumping device, at least for pumping a fluid medium, and to a pump with such a pumping device.

A pumping device for at least pumping a fluid is already known from DE 10 2017 104 400 A1, wherein the already known pumping device comprises at least one pumping chamber, at least one dimensionally stable pumping chamber element, which , at least partially limits the pumping chamber, and at least one elastically deformable, partially annular pumping element, which limits the pumping chamber together with the pumping chamber element and is placed on the pumping chamber element. DE 10 2017 104 400 A1 also discloses a pump with such a pumping device.

In addition, a pumping device at least for pumping a fluid is already known from US 3 922 119, and this pumping device comprises at least one pumping chamber, at least one dimensionally stable pumping chamber element, which, at least partially limits the pumping chamber, and at least one elastically deformable pumping element, which limits the pumping chamber together with the pumping chamber element and is placed on the pumping chamber element, and the pumping element has at least one sealing an extension that is integrally constructed with the main body of the pumping element and is at least partially located in the sealing groove of the pumping chamber element when the pumping element is placed on the pumping chamber element.

The invention is particularly based on the aim of making available a pumping device and/or a pump of the type originally described, which has (are) improved properties with respect to the advantageous pumping function. According to the invention, this object is achieved by the characteristics of claim 1, while advantageous embodiments and improvements of the invention can be derived from the dependent claims.

Benefits of the Invention

The invention is based on a pumping device, at least for pumping a fluid medium, with at least one pumping chamber, with at least one dimensionally stable pumping chamber element, which at least partially delimits the pumping chamber, and, with at least one resiliently deformable and, in particular, annular pumping element, in particular, a pumping membrane, which limits the pumping chamber together with the pumping chamber element and is placed on the pumping chamber element, while the pumping element has at least one a sealing extension that is integrally constructed with the main body of the pumping element and is at least partially located in the sealing groove of the pumping chamber element when the pumping element is placed on the pumping chamber element.

It is proposed that the pumping chamber element has an opposite surface, in particular, the aforementioned opposite surface for interacting with the pumping surface of the main body of the pumping element, in particular with the above pumping surface of the main body of the pumping element, in order to pump the fluid, while said opposite surface is extended over at least three circular arcuate sections, which are placed in series, in particular when viewed in cross section, and at the same time, at least one edge area of the pumping chamber element, limiting the sealing groove, in particular, the above-mentioned edge area of the pumping chamber of the chamber element is placed in such a way that it adjoins, in particular directly, at least one of the three circular arcuate sections. The circular arcuate sections preferably form the opposite surface of the pumping chamber element. Two of the three circular arcuate sections preferably form the elevations of the opposite surface and are placed on the outside. One of the three circular arcuate sections preferably forms a recess and is placed on the interior, in particular between the elevations. It is possible that the three circular arcuate sections have different or identical radii. The term "as a whole" in particular means at least a tightly bonded joint that is formed, for example, by a welding process, an adhesion process, an injection molding process, and/or other process considered appropriate by those skilled in the art, and /or means preferably manufactured in the form of a single piece, for example by casting and/or in a one-component or multi-component injection molding process and preferably from a single workpiece. The term "substantially perpendicular", in particular, specifies the alignment of the direction with respect to the reference direction, while the direction and the reference direction include an angle of 90°, in particular when viewed in the plane of the projection, and the angle has a maximum deviation, in particular, less than 8°, preferably less than 5° and in particular less than 2°. The sealing extension preferably has a sealing lip that extends over the pumping surface along a direction extending at least substantially perpendicular to the pumping surface. When viewed in a plane extending at least substantially perpendicular to the main pumping direction of the transfer chamber along which fluid can be pumped through the transfer chamber, the sealing lip has a cross section that is designed to be semi-circular or elliptical. However, there is also the possibility that the sealing lip has a different cross section, as considered appropriate by those skilled in the art. The sealing protrusion or the entire sealing extension is placed on the outer edge of the main body in a bead shape. The sealing lip extends in a main direction which is at least substantially aligned perpendicular to the pumping surface, in particular in a direction extending away from the pumping side.

The pumping side of the main body is preferably placed on the side of the main body facing away from the activation side of the main body. The pump side specifically forms the outer side of the main body. The activation side preferably forms the inner side of the main body. At least one activation extension of the pumping element is preferably placed on the activation side. The activating extension is preferably designed to cooperate with the transmission element of the pump drive unit comprising the pumping device, in particular at least two transmission elements of the drive unit. The transfer element(s) is preferably placed on the drive element of the pump drive unit containing the pumping device. The main body preferably has an annular structure. The main body, in particular, has an annular structure with slots. Seen in a plane, in particular a plane extending at least substantially perpendicular to the drive axis of the drive shaft, the main body in particular has a cross-sectional shape which essentially consists of a circular arc or open ring which extends along an angular range of less than 360° and in particular greater than 90° and two inlet and/or outlet extensions which extend transversely to the circular arc or open ring and directly adjoin the circular arc or open ring, in particular in end regions round arc or open ring. The activating extension is preferably placed on the main body, in particular on the inside of the main body, in the area of the circular arc extension or the annular extension of the main body. The maximum longitudinal extent of the activation extension is in particular at least 5% less, preferably 10% less and in particular at least 20% less than the maximum longitudinal extent of the main body. The activating extension preferably extends at least substantially along the entire length of the circular arc or open ring of the main body, in particular up to the end regions of the circular arc or open ring, on which the inlet and/or outlet extension of the main body is respectively located. The activation extension extends in particular on the activation side along an angular range of less than 360°, preferably less than 350° and in particular greater than 180°.

The sealing groove and the sealing extension, in particular the sealing protrusion, preferably have a corresponding shape, in particular a corresponding cross section. The sealing groove preferably has a U-shaped cross section, in particular when viewed in a plane extending at least substantially perpendicular to the main pumping direction of the pumping chamber. The sealing groove is preferably located on the inner side of the pumping chamber element, which faces the pumping element. The sealing groove is in particular located in the outer edge region of the pumping chamber element. The sealing groove is preferably spaced from the outer edge of the pumping chamber element, which forms a transition between the inner side of the pumping chamber element, facing the pumping element, and the outer side of the pumping chamber element, facing away from the pumping element, by a maximum distance, which, in particular, is less than 15 mm, preferably less than 10 mm, in particular less than 8 mm, and in particular has a value between 12 mm and 6 mm. The sealing groove is preferably spaced from the outer edge of the pumping chamber element by a maximum distance which, in particular, corresponds to at least half, in particular 50% of the maximum transverse extent of the sealing groove, preferably at least the maximum transverse extent of the sealing groove and in particular a multiple of the maximum transverse extent of the sealing groove. The maximum transverse extension preferably extends at least substantially parallel to the drive axis of the drive unit and/or at least substantially perpendicular to the main pump direction of the pump chamber.

The pumping element, in particular the pumping membrane, can advantageously move in the direction away from the opposite surface of the pumping chamber element, in particular to be pulled away from the opposite surface as a result of the effect of a driving force that acts in the direction away from the activation side, in particular to form a vacuum in the transfer chamber. A vacuum which is in particular below -0.1 bar, preferably below -0.2 bar and in particular below -0.3 bar, in particular referred to as "atmospheric pressure surrounding the pumping device", can preferably be formed in as a result of the movement of the pumping element, in particular the pumping membrane, in the direction away from the opposite surface. This makes it possible to achieve a preferential pumping of the medium to be pumped into the pumping chamber of the pumping device, which is at least partially limited by the opposite surface and the pumping surface.

The pumping element, in particular the pumping membrane, can preferably be actuated by means of a drive unit in such a way that the pumping of the medium to be pumped, in particular a fluid, can be carried out in accordance with the traveling wave principle (see, for example, the disclosure EP 1 317 626 B1). The drive unit can be configured 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 tube drive unit, a combination of the above types of drive units, or in the form of another unit. drive, as deemed appropriate by those skilled in the art. The drive unit preferably has at least a drive element which is designed to act on the pumping element, in particular the pumping membrane. However, it is also possible that the drive unit has more than one drive element designed to act on the pumping element. The drive element is preferably designed to cause an elastic deformation of the pumping element, in particular the pumping membrane, as a result of a driving force effect on the pumping element, in particular the pumping membrane. The actuating element may be of any design deemed appropriate by those skilled in the art, such as a plunger, extension, engagement ring, hook, gripper, and the like. The drive element is preferably designed in the form of an eccentric shaft. The eccentric shaft can preferably be driven in a rotating manner by a pump motor unit comprising a pumping device in a manner familiar to those skilled in the art. The motor unit may be configured in the form of an electric motor unit, an internal combustion engine unit, a hybrid electric motor unit, and the like. The drive element preferably has an axis of rotation. The axis of rotation preferably extends transversely, in particular at least substantially perpendicular to the main pumping direction of the pumping chamber, along which the fluid can be pumped through the pumping chamber.

The pumping chamber of the pumping device is preferably defined by the main body of the pumping element and the pumping chamber element. The pumping chamber of the pumping device is particularly defined by the pumping surface and the opposite surface opposite the pumping surface. The pumping chamber element is preferably designed in a dimensionally stable manner. The pumping chamber element is preferably prestressed, in particular for applying force to the pumping element in the direction of the drive unit and/or the pressing unit of the pumping device. The pumping element, in particular the pumping membrane, is preferably designed in a resilient manner. The term "resilient" means in particular the property of an element, in particular a pumping element, which in particular is designed to generate a reaction force which depends on the change in the shape of the element, preferably is proportional to the change and counteracts the change. The pumping element, in particular the pumping membrane, can preferably be repeatedly deformed, in particular without mechanical damage or destruction due to this pumping element, in particular the pumping membrane. The pumping element, in particular the pumping membrane, preferably tends to automatically assume, in particular after deformation, a basic shape, in particular a convex-curved basic shape referring to the opposite surface, in particular the zero position of the pumping element, in particular the pumping membrane . The elastic-elastic construction of the pumping element, in particular the pumping membrane, can preferably be at least partially influenced and/or caused by, in particular, the geometry of the main body and/or by the arrangement of the pumping element, in particular the pumping membrane , on the pumping chamber element having the opposite surface. The pumping element, in particular the pumping membrane, is preferably placed on a pumping chamber element having an opposite surface in such a way that the fluid is pumped into and/or through the pumping chamber by pressing the pumping element, in particular the pumping membrane. After the effect of the driving force for the pumping element, in particular the pumping membrane, ceases so as to pump the fluid, the pumping surface of the pumping element, in particular the pumping membrane, preferably tends to re-assume the convex-curved arrangement, refer to the opposite surface , at least in a substantially automatic manner, in particular as a result of the resilient construction. The pumping element, in particular the pumping membrane, is preferably made of a rubber-like and/or rubbery material. However, it is also possible that the pumping device, in particular the pumping membrane, consists of another material considered appropriate by those skilled in the art, or a combination of several materials that provide a resiliently elastic construction of the pumping element, in particular the pumping membrane. membranes. The pumping element, in particular the pumping membrane, preferably uses a "push-in effect" to pump fluid into and/or through the pumping chamber. The pumping element, in particular the pumping surface, can preferably be at least temporarily indented in order to pump fluid, wherein at least one indentation can be displaced, in particular by rolling, along the pumping surface in order to pump fluid Wednesday. The term "intended", in particular, means specially designed, specially designed and/or specially equipped. The phrase "an element and/or block is intended(s) for a specific function" specifically means that the element and/or block satisfies(s) and/or performs(s) that defined function, at least in the state of use and/or in working order.

The inventive design advantageously makes it possible to achieve a reliable sealing of the pumping chamber. An advantageous sealing function can be achieved. Reliable fluid transfer can be achieved in a highly advantageous manner. A reliable seal can advantageously be achieved. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized. A large sealing surface along the sealing line between the pumping chamber element and the pumping element can advantageously be achieved.

Furthermore, it is proposed that the sealing groove is designed in such a way that the sealing extension and the edge region of the pumping chamber element delimiting the sealing groove abut each other flat, in particular at least in the non-pumping state and in the pumping state of the pumping device. . In this context, the term "non-pumping state" in particular means the state of the pumping surface, in particular when viewed in at least a partial area of the pumping surface in which the pumping surface is not deformed, in particular spaced from the opposite surface by the maximum distance and decoupled from the effect of the driving force for pumping the medium to be pumped by means of the pumping surface, in particular in at least a partial region of the pumping surface. The edge region delimiting the sealing groove preferably forms a transition from the sealing groove, in particular from the bottom of the sealing groove groove, to the opposite surface against which the pumping surface can be placed. The edge region delimiting the sealing groove preferably abuts in particular directly on the sealing groove, in particular on the base of the sealing groove groove and on the opposite surface. The edge region delimiting the sealing groove preferably abuts in particular directly on the sealing groove, in particular on the base of the sealing groove groove and on the elevation of the opposite surface. At least more than 20%, preferably more than 30% and in particular more than 40% of the entire outer surface of the sealing protrusion, in particular, is adjacent to the marginal region delimiting the sealing groove. The inventive design advantageously makes it possible to achieve a multidimensional sealing function. Reliable fluid transfer can be achieved in a highly advantageous manner. A reliable seal can advantageously be achieved. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized.

Furthermore, it is proposed that the sealing groove and the edge region of the pumping chamber element delimiting the sealing groove, in particular the above-mentioned edge region of the pumping chamber element, which is located on the side of the sealing groove facing the above pumping surface of the main body of the pumping element, are constructed in such a way that the sealing extension flatly abuts the edge region of the pumping chamber element, which defines the sealing groove, and the bottom of the groove for the sealing groove. At least more than 50%, preferably more than 70% and in particular more than 80% of the entire outer surface of the sealing lip is adjacent to the inner surface of the sealing groove and to the marginal region defining the sealing groove. The inventive design advantageously allows realizing a multidimensional sealing function. A reliable seal can advantageously be achieved. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized. Reliable fluid transfer can be achieved in a highly advantageous manner.

In addition, it is proposed that the sealing groove extends completely around the opposite surface of the pumping chamber element, in particular, the aforementioned opposite surface of the pumping chamber element, which cooperates with the above pumping surface of the main body of the pumping element to pump the fluid, and that the sealing groove bounds the opposite surface. The sealing groove is preferably located on the edge region of the pumping chamber element. The opposite surface is preferably completely surrounded by the sealing groove. The sealing groove extends completely around the opposite surface. When viewed along a direction that extends at least substantially perpendicular to the main pumping direction and/or at least substantially parallel to the drive axis of the drive unit, the sealing groove and the opposite surface are positioned such that, in the cross section of the pumping chamber element, the sealing groove, in particular the sealing groove section, is placed first, the opposite surface is placed next to it, and the sealing groove, in particular the other sealing groove section, is again placed adjacent to the opposite surface. The inventive design advantageously allows a large sealing surface to be realized. The transfer chamber can be reliably sealed in an advantageous manner. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized. Reliable fluid transfer can be achieved in a highly advantageous manner.

Furthermore, it is proposed that the sealing extension extends completely around the pumping surface of the main body of the pumping element, in particular the above pumping surface of the main body of the pumping element, and delimits the pumping surface. The sealing lug or entire sealing extension preferably extends completely around the main body along the outer edge of the pumping element. The inventive design advantageously allows a large sealing surface to be realized. The transfer chamber can be reliably sealed in an advantageous manner. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized. Reliable fluid transfer can be achieved in a highly advantageous manner.

In addition, it is proposed that the sealing extension has a transitional area to the edge area of the main body of the pumping element, while the cross section of the said transitional area differs from the cross section of the additional transitional area of the sealing extension to the pumping surface of the main body. The transition area of the seal extension is located on the side of the seal extension facing away from the pumping surface. The transition region of the sealing extension is preferably placed on the outer contour of the sealing protrusion in a tangentially transitional manner. An additional seal extension transition area is located on the side of the seal extension facing the pumping surface. The additional transition region of the sealing extension preferably borders the outer contour of the sealing protrusion at the geometric point of reversal. The inventive design advantageously makes it possible to achieve a large contact surface between the edge region delimiting the sealing groove and the sealing extension. A multidimensional sealing function can advantageously be realized. A reliable seal can advantageously be achieved. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized. Reliable fluid transfer can be achieved in a highly advantageous manner.

In addition, it is proposed that the pumping device comprises at least one pressure block, with at least one pressure element, in particular at least one clamping ring, which is designed to act on the sealing elongation with the help of a pressure force in the direction of the pumping chamber element and to compress the sealing extension, at least in the region of the sealing groove. The pressing block is preferably designed to form a non-uniform distribution of pressing forces along the sealing line of the pumping element, which in particular extends along the circumferential direction of the pumping element. The non-uniform pressing force is preferably formed as a result of the special geometric design of the pressing surface of the pressing element and/or the special geometric design of the sealing extension of the pumping element. The design or development/distribution of non-uniform pressing forces depends in particular on the maximum force peaks or maximum load peaks along the seal line that result from the pumping of the fluid, in particular its compression through the interaction of the pumping element and the pumping chamber element due to the effect of the drive unit a pump containing a pumping device. The pressure block is preferably designed in such a way that the sealing extension of the pumping element is compressed to varying degrees at various positions along the pumping element or the sealing line, in particular as a result of the interaction of at least the pressure block, in particular at least one pressure element. clamping block and sealing extension. The pumping element may have an elongated design, in particular an elongated design or an annular design. The basic functionality of the pressure block with respect to generating a non-uniform pressing force or non-uniform compression along the sealing line preferably depends on the shape of the pumping element as such. The pumping element may be designed in the form of a flat pumping membrane, an annular pumping membrane, or other pumping membrane deemed appropriate by those skilled in the art, such as a lamellar or disc-shaped pumping membrane, and the like. The geometric design of the pressing surface and the geometric design of the sealing extension interacting with the pressing surface are preferably responsible for generating a non-uniform pressing force or non-uniform compression along the sealing line.

The pumping element preferably has a non-uniform compression at different positions of the sealing area along the maximum total extent of the sealing area, in particular along the maximum circumferential extent of the annular pumping element, as a result of the design of the pressure block, in particular as a result of the geometry of the pressure surface. The pumping element is compressed to varying degrees by the pressure block, in particular as a result of the geometry of the pressure surface, along the maximum total extent of the sealing region, in particular along the maximum circumferential extent of the annular pumping element. The pressure block has at least one pressure element, in particular at least one clamping ring, wherein the pumping element is designed in an annular manner, and in particular the sealing extension of the pumping element is pressed against the inner periphery of the annular pumping chamber element, in in particular, along the maximum total extent of the sealing area, with different intensities by means of the pressing element. The pressing element acts on the pumping element by means of a pressing force which acts at least substantially parallel to the axis of rotation of the drive element of the drive unit. The pressing element preferably acts on the pumping element with an additional pressing force which acts transversely, in particular at least substantially perpendicular to the axis of rotation of the drive element. The pressing element in particular comprises a peripheral collar for generating a pressing force which acts on the pumping element substantially parallel to the axis of rotation of the drive element. The pressure block preferably comprises at least two pressure elements, in particular at least two clamping rings, by means of which the pumping element, in particular the sealing extension of the pumping element, is pressed against the inner periphery of the annular pumping chamber element with different intensities, in particular , along the maximum total extent of the sealing region. The pumping element is preferably placed in the pumping chamber element between at least two pressing elements.

The pressing element preferably presses the sealing extension against the pumping chamber element, in particular at least along the circumferential direction of the pumping chamber element, by means of a non-uniform pressing force along the circumferential direction. The main direction of action of the inhomogeneous pressing force preferably coincides transversely, in particular at least substantially perpendicular to the axis of rotation of the drive element. The pressing element preferably has a pressing surface which has a varying level, in particular a varying distance from the surface, in particular the inner surface of the pressing element, facing away from the pressing surface along the maximum longitudinal extent of the pressing surface, in particular in the peripheral direction of the pressing element. The varying level of the pressing surface is preferably formed by varying curvature along the full extent of the pressing surface, in particular along a circumferential direction extending in a plane which is at least substantially perpendicular to the axis of rotation of the drive element. However, there is also the possibility that the varying pressure surface level is formed by different maximum heights of elevations in the pressure surface, in particular along a circumferential direction extending in a plane which is at least substantially perpendicular to the axis of rotation of the drive element. It is also possible that a varying level of the pressure surface is formed by different maximum thicknesses of the edge of the pressure element, in particular the clamp of the pressure element on which the pressure surface is placed, on the pressure element on the side where the pumping element is placed. Other pressure surface designs deemed useful by those skilled in the art for implementing varying pressure surface levels are likewise possible.

Alternatively or additionally, it is possible that the sealing extension, which is pressed against the inner periphery of the annular pumping chamber element by the pressure block, has a varying maximum thickness along the maximum longitudinal extent, in particular in the peripheral direction of the pumping element. The maximum thickness is preferably formed by the maximum extension, in particular the maximum height of the sealing extension, in particular as viewed along a direction extending at least substantially perpendicular to the pumping surface. However, it is also possible that the maximum thickness of the sealing extension is formed by the maximum extension of the sealing protrusion starting from the pumping surface, in particular when viewed along a direction extending at least substantially perpendicular to the pumping surface. The sealing extension is preferably pressed against at least one sealing groove by means of at least one pressing element, in particular a clamping ring, wherein the compression of the sealing extension is non-uniform along the maximum longitudinal extent of the sealing extension, in particular along the circumferential direction of the pumping element. Alternatively, or in addition to the varying pressure surface level and/or the varying thickness of the sealing extension, there is also the possibility that the sealing groove has a varying level, in particular to realize a non-uniform pressing force along the sealing line. The inventive design allows to achieve the predominant effect of the pressure block. A multi-dimensional pressure effect for the pumping element can advantageously be realized. A reliable seal can advantageously be achieved. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized. Reliable fluid transfer can be achieved in a highly advantageous manner.

In addition, it is proposed that the sealing extension extends over the pumping surface along a transverse direction extending in particular at least substantially perpendicular to said pumping surface of the main body of the pumping element. Preferably, at least the sealing protrusion of the sealing extension extends over the pumping surface, starting from the pumping surface, in particular along a transverse direction, extending in particular at least substantially perpendicular to the pumping surface. The inventive design makes it possible to achieve an advantageous sealing effect of sealing elongation. A reliable seal can advantageously be achieved. Leakage can be advantageously counteracted. Efficient pumping of the fluid can advantageously be realized. Reliable fluid transfer can be achieved in a highly advantageous manner.

In addition, a pump is provided with at least one inventive pumping device. The pump is preferably intended for use in the food sector, in the chemical sector, in the pharmaceutical sector, in particular for serial use, in the vivarium sector (for aquariums, etc.), in the household appliance sector, in the dental hygiene sector, in the automotive sector , in the medical sector, in the water treatment sector, etc. The pump preferably comprises at least one drive unit, in particular the aforementioned drive unit, which has at least one drive element, in particular the aforementioned drive element, in particular at least one eccentric shaft, which for the most part is surrounded by the pumping chamber element, the pumping element and the pressure block, in particular when viewed along a peripheral direction extending around the drive axis of the drive unit. The drive unit, in particular at least the drive element, is preferably completely surrounded by the pumping chamber element, the pumping element and the pressing unit, in particular when viewed along a peripheral direction extending around the drive axis of the drive unit. The inventive design makes it possible to advantageously realize a compact and powerful pump. A high serviceability can be advantageously achieved, in particular, since the pumping device as a whole can be removed from the housing together with the drive unit. Pumping of the medium to be pumped can be implemented.

The inventive pump and/or the inventive pumping device are not limited to the above-described application and embodiment. The number of individual elements, components and blocks of the inventive pump and/or inventive pumping device for performing the function described herein, in particular, may differ from the number mentioned in this document. With respect to the ranges of values specified in this disclosure, values falling within said ranges should also be considered disclosed and arbitrarily applicable.

Brief description of the drawings

Other advantages arise from the following description of the drawings. The drawings show an exemplary embodiment of the invention. The drawings, description and claims contain many characteristics in combination. Those skilled in the art should also appropriately consider these characteristics separately and combine them into other appropriate combinations.

On the drawings:

Fig. 1 shows a schematic representation of the inventive pump with the inventive pumping device,

Fig. 2 shows a schematic representation of the inventive pump with an open casing,

Fig. 3 shows a schematic cross-section through the inventive pump,

Fig. 4 shows another schematic section through the inventive pump,

Fig. 5 shows a schematic representation of the inventive pumping device in the state in which it is removed from the pump casing,

Fig. 6 shows a schematic representation of the pumping element of the inventive pumping device,

Fig. 7 shows a schematic representation of the pumping chamber element of the inventive pumping device,

Fig. 8 shows a schematic partial section through the pumping element and the pumping chamber element,

Fig. 9 shows a schematic representation of the pressure element of the pressure block of the inventive pumping device, and

Fig. 10 shows a schematic representation of a fluid line adapter or a fluid outlet adapter of the inventive pumping device.

Description of an Exemplary Embodiment

Fig. 1 shows a pump 10 with a pumping device 12 at least for pumping a (not shown) fluid. The pumping device 12 is designed to at least be able to pump a fluid, in particular as a result of the effect of the pump drive unit 16 for the pumping device 12, in particular for the elastically deformable pumping element 22 of the pumping device 12. The pumping device 12 comprises, at least one pumping chamber 18, at least one dimensionally stable pumping chamber element 20, which at least partially delimits the pumping chamber 18, and at least elastically deformable, in particular annular pumping element 22, which limits the pumping chamber 18 together with the pumping chamber element 20 and is placed on the pumping chamber element 20 (see Fig. 4). The pumping element 22 is preferably designed in the form of a pumping membrane. The pumping chamber element 20 is at least mostly, in particular, entirely made of plastic, in particular injection molded plastic. However, there is also the possibility that the pumping chamber element 20 is made of another material considered appropriate by those skilled in the art. The pumping element 22 is preferably at least mostly, in particular entirely made of rubber, in particular synthetic rubber such as EPDM, FC, NBR and the like. However, there is also the possibility that the pumping element 22 is made of another material considered appropriate by those skilled in the art.

The pump 10 includes at least a drive unit 16 for acting on the pumping device 12 and at least one casing 14 for receiving the pumping device 12. The drive unit 16 preferably includes at least one drive element 24 for acting on the pumping device. device 12 (see Fig. 4). The drive element 24 is preferably designed in the form of an eccentric shaft. However, it is also possible that the drive unit 24 has a different design, considered reasonable by those skilled in the art, for example, in the form of a rotationally symmetrical shaft on which at least one cam is placed to act on the pumping device 12 and etc. The drive element 24 can be connected to the drive shaft of a (not shown) motor unit, such as an electric motor, an internal combustion engine, a pneumatic motor, etc., directly, in particular by means of a rotatably fastening, or indirectly, for example, by means of a gear unit. or means of at least one gear element. The drive element 24 has an axis of rotation 26 which extends transversely, in particular at least substantially perpendicular to the main pumping direction, along which the fluid can be pumped through the pumping chamber 18.

The pumping device is preferably at least for the most part, in particular completely located in the casing 14. The pumping device 12 is at least for the most part, in particular, completely surrounded by the casing 14. Those skilled in the art know that the casing 14, in particular, is designed to wrap around and/or support the pumping device 12 and/or the drive unit 16 of the pump 10, at least partially, in particular completely. The housing 14 may be made of plastic, metal, a combination of plastic and metal, or other material deemed appropriate by those skilled in the art. The housing 14 may be of a shell design, a canister design, a combination of a shell and canister design, or other design deemed appropriate by those skilled in the art.

The casing 14 is formed at least separately from the pumping chamber element 20 of the pumping device 12, in particular from the pumping device 12 in one piece, namely so that the pumping chamber element 20, in particular the pumping device 12 as a whole, can can be removed from the casing 14. The pumping chamber element 20, in particular the pumping device 12 as a whole, can preferably be removed from the casing 14 after removing the upper part 36 of the casing, in particular together with the pumping element 22 placed on the pumping chamber element 20. the device 12 can preferably be removed from the casing 14 as a whole, in particular after the removal of the upper part 36 of the casing for the casing 14, so that it is separated from the removal of the individual components of the pumping device 12. When the pumping device 12, in particular the pumping device 12 as one the whole is housed in the casing 14, in particular the casing 14 surrounds at least the pumping chamber element 20, in particular the pumping device 12, at least for the most part along a peripheral direction extending in a plane that is essentially perpendicular to the drive axis 70 block 16 of the drive.

Looking along a direction extending transversely to the drive axis 70 of the drive unit 16, the pumping chamber element 20 is located at least between the casing 14 and the pumping element 22 of the pumping device 12, in particular directly adjacent to the casing 14 or directly adjacent to the casing 14 (see Fig. 2). When the pumping device 12 is placed in the housing 14, the pumping device 12 at least substantially surrounds the drive unit 16 completely, in particular along a peripheral direction extending in a plane that is at least substantially perpendicular to the drive axis 70 of the unit. 16 drives. When the pumping device 12 is housed in the housing 14, the outer side of the pumping chamber element 20 is connected to the inner side of the housing by means of frictional engagement or form-fitting connection and, in particular, preferably adjoins directly to the inner side of the housing 14. When the pumping device 12, in particular, the pumping device 12 as a whole is housed in the housing 14, the outer side of the pumping chamber element 20 preferably adjoins at least partially the inner side of the housing 14, in particular at least the inner side of the lower part 72 of the housing for the housing 14. The pumping chamber element 20 preferably adjoins the inside of the casing 14, in particular the inside of the bottom part 72 of the casing for the casing 14, with more than 30%, preferably with more than 40% and less than 95%, in particular between 40 % and 60% of the entire outer surface from its outer side. The casing 14 preferably has a recess in which the pumping device 12 can be placed or, in particular, is placed. The recess of the casing 14, in particular the lower casing part 72, is preferably limited by a collar-shaped extension in the inner part of the casing 14, in particular in the lower casing part 72. The yoke-like extension extends through less than 360°, in particular to allow the arrangement of the inlet and outlet region of the pumping device 12 in the casing 14, in particular in the lower part 72 of the casing.

In addition, the casing 14 includes at least one receiver 32, in particular at least two receivers 32, 34 for accommodating at least one fluid line adapter 28 and/or one fluid line adapter 30 fluid line adapter 28. The fluid line adapter 28 is preferably designed to be connected to a liquid line, in particular to supply fluid to the pump chamber 18. The fluid outlet line adapter 30 is preferably designed to be connected to a liquid line, in particular to implementation of the release of fluid from the pumping chamber 18. The receiver(s) 32, 34 is preferably located in the upper part 36 of the casing for the casing 14 (see Fig. 1 and 3). However, it is also possible that the receptacle(s) 32, 34 are(are) located in another component of the housing 14, such as the lower part 72 of the housing or the like. The fluid line adapter 28 and/or the fluid outlet adapter 30 are preferably connected to the receptacle(s) 32, 34, in particular attached to the receptacle(s) 32, 34 by a positive and/or friction connection. For example, the receptacle(s) 32, 34 includes (at) on the inside of an internal thread for attaching the adapter 28 of the fluid supply line and/or the adapter 30 of the fluid outlet line to the casing 14, in particular, to the upper part 36 of the casing (see. Fig. 3). However, it is also possible that the fluid line adapter 28 and/or the fluid outlet adapter 30 are placed, in particular fixed on the receptacle(s) 32, 34 by another connection, in particular a threadless connection with a geometric by a closure, which is formed, for example, by being inserted into the receptacle(s) 32, 34. The receptacle(s) 32, 34 are extended continuously from the outside of the casing 14, in particular from the upper part 36 of the casing, to the inside of the casing 14 , in particular, in the upper part 36 of the casing. The receiver(s) 32, 34 are preferably (are) constructed in the form of a through hole(s) from the outside to the inside of the casing 14. When the pumping device 12 is placed in the casing 14, the fluid line adapter 28 and/or the outlet line adapter 30 fluid is drawn(s) out of the pumping chamber element 20 at least up to, in particular, outside the outer side of the casing 14, in particular when the connecting part 38 of the pumping chamber element 20 is connected to the adapter 28 of the fluid supply line, and /or, in particular, when the additional connecting part 40 of the pumping chamber element 20 is connected to the adapter 30 of the fluid line (see Fig. 3).

The connecting piece 38 and/or, in particular, the additional connecting piece 40, respectively, is placed on at least one transverse extension 60, 62 of the pumping chamber element 20, in particular designed in one piece with the corresponding transverse extension 60, 62 ( see Fig. 2, 3, 5 and 7). Seen in a plane, in particular in a plane extending at least substantially perpendicular to the axis of rotation 26 of the drive element 24, in particular the drive axis 70 of the drive unit 16, the pumping chamber element 20 in particular has a cross-sectional shape, which essentially consists of a circular arc or open ring which extends along an angular range less than 360° and in particular greater than 90° and two transverse extensions 60, 62 which extend transversely to the circular arc or open ring and directly border a circular arc or an open ring, in particular in the end regions of the circular arc or an open ring. The connecting part 38 and/or in particular the additional connecting part 40, respectively, has a main axis 64, 66, which extends transversely, in particular at least substantially perpendicular to the main plane of at least one transverse extension 60, 62, in particular the corresponding transverse extension 60, 62. The main axis/axes 64, 66 of the connecting piece 38 and/or in particular of the additional connecting piece 40 are preferably drawn transversely, in particular at least substantially perpendicular to the main pumping direction. the pumping chamber 18, along which the fluid can be pumped through the pumping chamber 18. The main axis/axes 64, 66 of the fitting 38 and/or in particular of the additional fitting 40 preferably extends 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 piece 38 and in particular the additional connecting piece 40 are placed on the side, in particular on the outside, of the pumping chamber element 20 facing away from the pumping element 22 in such a way that they are combined in different ways, in particular, opposite each other. The connecting piece 38 and in particular the additional connecting piece 40 is preferably drawn in different directions, in particular in opposite directions, starting from the outside of the pumping chamber element 20. The connecting piece 38 and in particular the additional connecting piece 40 is preferably drawn in the directions , which face in the direction away from the pumping chamber element 20 and are aligned opposite each other, starting from the outside of the pumping chamber element 20.

Seen along the major axis(s) 64, 66 of the connecting piece 38 and/or in particular the additional connecting piece 40, the connecting piece 38 and/or in particular the additional connecting piece 40 is spaced apart(s) from the inner wall of the housing 14, in particular, at least the upper part 36 of the casing and/or the lower part 72 of the casing, when the pumping device 12 is placed in the casing 14 (see Fig. 2 and 3). The connecting part 38 and/or in particular the additional connecting part 40 is preferably spaced apart from the inner wall of the casing 14, in particular from the inside of the upper part of the casing 36 and/or the inside of the lower part of the casing 72, along the entire periphery of the connecting part 38 and/ or, in particular, an additional fitting 40, when the pumping device 12 is placed in the casing 14. of the housing and/or from the inside of the lower housing part 72 is preferably greater than 0.001 mm, in particular greater than 0.01 mm, and in particular greater than 0.1 mm and less than 10 mm. The minimum distance of the connecting piece 38 and/or in particular of the additional connecting piece 40 from the inner wall of the casing 14, in particular from the inside of the upper casing part 36 and/or from the inside of the lower casing part 72 preferably has a value which is in the range between 0.1 mm and 5 mm. However, in an alternative construction of the pump 10, it is also possible that the connecting piece 38 and/or in particular the additional connecting piece 40 is adjacent to the inner wall of the casing 14, in particular to the inner side of the upper part of the casing 36 and/or to the inside of the bottom part 72 of the casing and is supported on the inside wall of the casing 14, in particular on the inside of the top part 36 of the casing and/or on the inside of the bottom part 72 of the casing, when the pumping device 12 is placed in the casing 14.

The pumping chamber element 20 comprises at least a connection piece 38 for a fluid supply line adapter 28, which, in particular, is designed to be different from a hose, and/or at least an additional connection piece for a fluid line adapter 30 medium, which, in particular, is designed to be different from the hose, while said connection piece(s), respectively, is(are) placed on the side, in particular on the outside, of the pumping chamber element 20, facing away from the pumping element 22 (see FIGS. 2, 3, 5 and 7). The fluid line adapter 28 and/or the fluid outlet adapter 30 are preferably constructed in a tubular manner. The fluid line adapter 28 and/or the fluid outlet adapter 30 preferably has(are) a conically extendable plug end 44, 46 (see FIGS. 3 and 10). The insert end 44, 46 of the fluid line adapter 28 and/or the fluid outlet adapter 30, respectively, is received in the fitting 38 or in particular in the additional fitting 40 when the fluid line adapter 28 and/or the adapter the fluid outlet line is(are) located on the pumping chamber element 20. The fluid line adapter 28 and/or the fluid outlet line adapter 30 preferably comprises a coupling end 48, 50 for appropriate connection to the supply line or the outlet line, for supplying or discharging fluid from or to the transfer chamber 18, respectively. It is also possible that the fluid line adapter 28 and/or the fluid outlet adapter 30 is(are) intended to form a connection with various components deemed appropriate by those skilled in the art. in the art, such as fluid couplers, hose connectors, and the like. The coupling end 48, 50 is positioned on the side of the fluid line adapter 28 or the fluid outlet adapter 30 that faces away from the plug end 44, 46. The fluid line adapter 28 and the fluid outlet adapter 30 preferably have, at least substantially identical design. However, it is also possible that the fluid line adapter 28 and the fluid outlet adapter 30 are at least partially constructed differently, for example, in the form of a functional unit 58 and the like.

The pumping device 12 comprises at least one functional unit 58, in particular a filter unit and/or a valve unit, as well as a fluid supply line adapter 28 and/or a fluid outlet line adapter 30, wherein the functional unit 58, according to at least partially, in particular, completely located in the adapter 28 of the fluid supply line and/or in the adapter 30 of the fluid outlet line (see Fig. 2, 3 and 10). The functional unit 58 is preferably at least partially, in particular completely integrated in the fluid line adapter 28 and/or in the fluid outlet adapter 30 in a permanent manner, or at least partially, in particular, completely housed in the adapter. 28 fluid supply lines and/or in a replaceable fluid outlet adapter 30. For example, the functional block 58 may have one or in particular two filter and/or valve cartridges, which are respectively placed in the fluid line adapter 28 or in the fluid line adapter 30. Various designs or arrangements of the functional block 58 considered reasonable by those skilled in the art are likewise possible, such as arrangement between the fitting 38 and the fluid line adapter 28 or, in particular, between the additional fitting 40 and the fluid outlet adapter 30 environment, etc.

The fluid line adapter 28 and/or the fluid outlet adapter 30 is(are) placed on the housing 14, in particular on the upper part 36 of the housing and/or on the pumping chamber element 20, in a removable manner. The pump 10 comprises at least one fixing block 42 for fixing the fluid line adapter 28 and/or the fluid outlet adapter 30 on the casing 14, in particular on the top part 36 of the casing, by means of a positive connection and/or friction connection. The fastening block 42 preferably comprises an external thread, in particular two external threads, which are in particular located on the outside of the receptacle(s) 32, 34 (see FIG. 1). It is possible that the fixing block comprises at least one (not shown) screw cap, in particular two screw caps which engage with the male thread(s) and in particular tightly clamp the yoke of the fluid line adapter 28 and /or a fluid line adapter 30 to secure the fluid line adapter 28 and/or the fluid line adapter 30 to the housing 14. Preferably, the fixing block 42 alternatively or additionally comprises at least internal thread(s) placed on the receptacle(s) 32, 34. In addition, it is possible that the anchoring block 42 alternatively or additionally contains various components considered appropriate by those skilled in the art for securing the fluid line adapter 28 and/or the adapter 30 fluid outlet lines on the housing 14, in particular on the upper part 36 of the housing, by means of a form-fitting and/or frictional connection, for example, a fastening ring, a fastening pin, etc.

The pumping device 12 includes at least one movement compensating unit 52 which is at least designed to at least partially compensate and/or damp relative movements between the fluid line adapter 28 and the coupling piece 38 when the coupling piece 38 connects to fluid line adapter 28, and/or to at least partially compensate and/or damp relative movements between fluid line adapter 30 and, in particular, additional fitting 40 when additional connecting part 40 connects to the fluid outlet adapter 30 (see FIG. 3). The displacement compensating unit 52 preferably comprises at least one damping element 54, in particular at least two damping elements 54, 56. The damping element(s) are preferably (are) constructed in the form of an O-ring. However, it is also possible that the damping element(s) 54, 56 is(are) of another design deemed appropriate by those skilled in the art, such as in the form of an elastomeric disk, a hollow elastomeric cylinder, or the like. Preferably, the damping element(s) 54, 56, respectively, is(are) placed between the fitting 38 and the fluid line adapter 28, or in particular between the additional fitting 40 and the fluid outlet adapter 30. The damping element(s) 54, 56, in particular, adjoin(s) to the inner side of the connecting piece 38 and to the outer side of the plug-in end 44 of the adapter 28 of the fluid supply line and/or to the inner side, in particular, of the additional connecting piece 40 and to the outer side of the plug-in end 46 of the adapter 30 of the fluid outlet line. In addition to dampening the movement, the damping element(s) 54, 56 are preferably also(s) for appropriately forming a fluid seal between the fitting 38 and the fluid line adapter 28 and/or for forming a fluid seal, in particular between an additional connection part 40 and adapter 30 of the fluid outlet line.

The pumping element 22 comprises at least one main body 76, which, in particular, is at least substantially annularly constructed (see FIGS. 3 and 6), wherein said main body can be elastically deformed and has, according to at least one pumping surface 78, which is located on the pumping side of the main body 76. In addition, the pumping element 22 preferably includes at least one activating extension 80, in particular, a plurality of activating extensions 80 for connection with at least one transmission element 82 of the drive unit 16, which cooperates with the activation extension 80, in particular, with a plurality of activation extensions 80 on the activation side of the main body 76. The pump side of the main body 76 is preferably located on the main body 76 on the side of the main body 76 that faces into direction away from the activation side of the main body 76. The pumping side specifically forms the outer side of the main body 76. The activation side preferably forms the inner side of the main body 76. The inner side of the main body 76 is particularly at least partially formed by the activation side. The activation extension 80, in particular the activation extensions 80, in particular, is(are) designed integrally with the main body 76. However, it is also possible that the activation extension 80, in particular the activation extensions 80, is(are) formed separate from the main body 76 and is(are) attached to the main body 76 by a form-fitting and/or frictional connection as deemed appropriate by those skilled in the art.

The activating extension 80, in particular the activating extensions 80, is(are) designed in the form of a positive-locking and/or frictional engagement element(s) that interact(s) with the transmission element 82 via a positive-locking and/or frictional connection, in in particular, a form-fitting connection and/or a friction connection that is not tightly engaged in order to at least transmit a driving force acting in a direction away from the activation side. The activating extension 80, in particular the activating extensions 80, is preferably clamped(s) between two transmission elements 82, in particular transmission rings, which are placed on the drive element 24 (see FIG. 4). Seen along the circumferential direction extending around the drive axis 70 of the drive unit 16, in particular the activation extension 80, in particular the activation extensions 80, has(are) a maximum longitudinal extent that is less than the maximum longitudinal extent of the main body 76.

When viewed in a plane, in particular a plane extending at least substantially perpendicular to the drive axle 70, the main body 76 preferably has a cross-sectional shape that essentially consists of a circular arc or open ring and two inlet and/or outlet extensions that extend transversely to a circular arc or open ring. The circular arc or open ring of the cross-sectional shape of the main body 76 preferably extends along an angular range of less than 360° and in particular greater than 90°. Inlet and/or outlet extensions of the cross-sectional shape of the main body 76, which extend transversely to the circular arc or open ring, are preferably located in such a way that they directly adjoin the circular arc or open ring, in particular in the end regions of the circular arc or open ring. . The activating extension 80, in particular the activating extensions 80, preferably extend(s) along a closed circular ring, whereby the activating extension 80, in particular the activating extensions 80, can form the circular ring itself. The maximum extent of the activation extension 80 along the central axis of the main body 76, or the total extent of several successive activation extensions 80 along the central axis of the main body 76, in particular at least 5% less, preferably at least 10% and, in in particular, at least 20% less than the maximum longitudinal extent of the main body 76. Preferably, if the activating extension 80 or several successive activating extensions 80 together, in particular, extend(s) along an angular range greater than 270°, preferably less than 360° or 360°, on the activation side.

The pumping chamber element 20 at least for the most part surrounds the pumping element 22 along a circumferential direction extending in particular in a plane which is at least substantially perpendicular to the drive axis 70 of the drive unit 16 (see FIG. 3 and 5). The pumping chamber element 20 is designed in an annular manner. The pumping chamber element 20 and the pumping element 22 preferably have at least a substantially similar shape, in particular when viewed in a plane extending at least substantially perpendicular to the drive axis 70 of the drive unit 16. The pumping chamber element 20 and the pumping element 22, in particular, the main body 76 of the pumping element 22, in particular, have a main shape that resembles the capital Greek letter "Omega", while the extensions of the pumping chamber element 20 and the pumping element 22 are preferably located at an angle with respect to extensions in the form of a capital Greek letter "Omega" by 90°.

The pumping chamber element 20 has an opposite surface 74 which cooperates with the pumping surface 78 of the pumping element 22 so as to pump fluid, said opposite surface facing the pumping element 22 and having at least one elevation 84, 86, which oriented in the direction of the pumping element 22 (see Fig. 4, 7 and 8). The opposing surface 74 preferably includes at least two elevations 84, 86 that are oriented in the direction of the pumping element 22. Seen along the circumferential direction, the elevation(s) 84, 86 extend(s) along at least substantially the entire the inner side of the pumping chamber element 20, which, in particular, extends in the form of a circular arc. The rise(s) 84, 86 preferably extend(s) along the inside of the pumping chamber element 20 from one of the transverse extensions 60, 62 to the other transverse extension 60, 62 along a circular arc or open ring.

The pumping element 22, in particular the main body 76, has a pumping surface 78 which, when viewed in cross section of the pumping element 22, in particular in the cross section of the pumping chamber 18, has a maximum transverse extent which is at least substantially in particular, fully corresponds to the maximum transverse extent of the opposite surface 74 of the pumping chamber element 20 (see Fig. 4 and 8). In order to pump fluid into and/or through the pumping chamber 18, the pumping surface 78, in particular, can be completely placed against the opposite surface 74 of the pumping chamber element 20 as a result of the effect of a driving force that can be generated by the drive unit 16. When viewed in cross section of the pumping chamber element 20, the opposite surface 74 of the pumping chamber element 20 has at least three successive circular arcuate sections. The circular arcuate sections form the opposite surface 74. Two of the three circular arcuate sections form the elevations 84, 86 of the opposite surface 74 and are placed on the outside. One of the three circular arcuate sections forms a recess and is placed on the interior, in particular between the elevations 84, 86. It is possible that the three circular arcuate sections have different or identical radii.

The pumping chamber element 20 has at least one connection area, in particular at least one connection groove, preferably a sealing groove 88, which is located in particular on the inside of the pumping chamber element 20, wherein at least , the edge area of the pumping element 22, in particular the extension, preferably the sealing extension 90 of the pumping element 22, placed on the edge of the pumping element 22, engages with said sealing groove, in particular in a sealing manner, when it is placed on the pumping chamber element 20 (see Fig. Fig. 4 and 8). The pumping element 22 has at least a sealing extension 90 which is integrally constructed with the main body 76 of the pumping element 22 and is at least partially located in the sealing groove 88 of the pumping chamber element 20 when the pumping element 22 is placed on the pumping chamber element 20. The sealing groove 88 is designed in such a way that the sealing extension 90 and the edge region 92 of the pumping chamber element 20, which defines the sealing groove 88, flatly adjoin each other. The sealing groove 88 and the edge area 92 of the pumping chamber element 20, which defines the sealing groove 88, which is located on the side of the sealing groove 88 facing the pumping surface 78 of the main body 76 of the pumping element 22, are designed in such a way that the sealing extension 90 is flat against the edge area. 92 of the pumping chamber 20 defining the sealing groove 88 and to the bottom 94 of the groove for the sealing groove 88. The sealing groove 88 extends completely around the opposite surface 74 of the pumping chamber 20 which cooperates with the pumping surface 78 of the main body 76 of the pumping element 22 to pump fluid, and defines the opposite surface 74. The sealing groove 88 preferably extends on the transverse extensions 60, 62 of the pumping chamber element 20 around the corresponding inlet or outlet in the corresponding transverse extension 60, 62 and is converted, in particular, seamlessly into the annular inner side of the pumping chamber element 20 to define the opposite surface 74. The sealing groove 88 preferably extends along the entire inner edge region of the pumping chamber element 20. The pumping chamber element 20 has an opposite surface 74 for interacting with the pumping surface 78 of the main body 76 of the pumping element 22 to pump fluid, wherein said opposite surface extends over at least three circular arcuate sections, which are placed in series, in particular, when viewed in cross section, while at least the edge region 92 of the pumping chamber element 20, limiting the sealing groove 88, is placed in such a way that it borders, in particular directly, on at least one of the three circular arcuate sections, in particular on the outer circular arcuate section.

The seal extension 90 extends completely around the pumping surface 78 of the main body 76 of the pump element 22 and defines the pumping surface 78. The seal extension 90 preferably extends along the entire outer periphery of the main body 76. The seal extension 90 preferably extends around the inlet and/or outlet extensions of the main body 76 and is converted, in particular, seamlessly into an annular main body shape 76 to delimit the pumping surface 78. The sealing extension 90 preferably has a transitional area to the edge area of the main body 76 of the pumping element 22, the cross section of said transitional area differs from the cross section of the additional transitional area of the sealing extension 90 to the pumping surface 78 of the main body 76 (see Fig. 8).

In addition, the pumping device 12 includes at least one pressure block 96, which has at least one pressure element 98, 100, in particular at least one clamping ring, which is designed to act on the sealing extension 90 by means of a pressing force in the direction of the pumping chamber element 20 and with the possibility of compressing the sealing extension 90 at least in the area of the sealing groove 88 (see FIGS. 4, 5 and 9). The sealing extension 90 extends over the pumping surface 78 along a transverse direction extending in particular at least substantially perpendicular to the pumping surface 78 of the main body 76 of the pumping element 22. At least in the non-pumping state of the pumping element 22, in particular the pressing block 96 is designed to generate a non-uniform pressing force, at least in the sealing region 102 between the pumping element 22 and the pumping chamber element 20 along the maximum total extent of the sealing region 102, in particular, along the maximum peripheral extent between the pumping element 22 and the pumping chamber element 20 The sealing region 102 is preferably formed due to the interaction of the sealing groove 88 and the sealing extension 90. The pressing block 96 is preferably designed to form a non-uniform distribution of pressing forces along the sealing line of the pumping element 22, which in particular extends along the circumferential direction of the pumping element 22. The sealing line is preferably formed by sealing extension 90.

The pressure block 96 is preferably designed such that the pumping element 22 has non-uniform compression, in particular at least in the non-pumping state of the pumping element 22, along the maximum total extent of the sealing region 102 or sealing line, in particular along the maximum peripheral extent of the annular pumping element 22. The pressure block 96 has at least one pressure element 98, 100, in particular at least one clamping ring, while the pumping element 22 is designed in an annular manner and is pressed against the inner periphery of the annular pumping chamber element 20 by means of pressure element 98, 100. The pressure block 96 preferably comprises at least two pressure elements 98, 100, in particular two clamping rings, between which the pumping element 22 is placed in the pumping chamber element 20. The pumping element 22 can preferably be pressed against the inner the periphery of the annular pumping chamber element 20 by means of the pressing elements 98, 100. The sealing extension 90, in particular, is pressed against the sealing groove 88 due to the effect of the pressing element 98, 100 for the pumping element 22. The pressing block 96 has at least a pressing element 98, 100, in particular at least a clamping ring, wherein the pumping element 22 has at least a sealing extension 90, while the pressing element 98, 100 presses the sealing extension 90 against the pumping chamber element 20, in particular at least least along the circumferential direction of the pumping chamber element 20, in particular by means of a non-uniform pressing force along the circumferential direction. The pressing block 96 has at least a pressing element 98, 100, in particular at least a clamping ring which has a pressing surface 104, said pressing surface having a varying level, in particular a varying distance from the surface, in particular , the inner surface of the pressing element 98, 100 facing the pressing surface 104, along the maximum longitudinal extension of the drawing of the pressing surface 104, in particular along the peripheral direction of the pressing elements 98, 100. The varying level of the pressing surface 104 is preferably formed by different maximum heights of the pressing surface 104 along the peripheral direction. As an example, FIG. 9 shows, by means of dotted lines, three different positions 106, 108, 110 on the pressing element 98, the pressing surface 104 being intended to form different degrees of compression of the sealing extension 90. The pressing surface 104, in particular, has in three different positions 106, 108, 110 different maximum heights, which can be formed in various ways, for example, by varying the maximum thickness of the pressing element 98 at three positions 106, 108, 110 compared to other positions of the pressing element 98, by varying the geometric extent of the pressing surface 104 on the side of the pressing element 98 facing to the pumping element 22, or in any other manner deemed appropriate by those skilled in the art. For example, the sealing extension 90 is compressed to varying degrees at positions 106, 108, 110 as a result of the varying level. At position 106, for example, the sealing extension 90 is compressed, in particular by more than 10%, preferably by more than 15%, in particular by more than 20% and in particular by more than 22% relative to the maximum thickness 68 of the sealing extension 90. At position 108, for example, the sealing extension 90 is compressed, in particular by more than 5%, preferably by more than 10%, in particular by more than 15% and in particular by more than 19% relative to the maximum thickness 68 of the sealing extension 90. At position 110, for example, the sealing extension 90 is compressed, in particular by more than 4%, preferably by more than 8%, in particular by more than 14% and in particular by more than 16% % relative to the maximum thickness 68 of the seal extension 90.

The pressure block 96 has at least one pressure element 98, in particular at least one clamping ring and at least one additional clamping element 100, in particular at least one additional clamping ring, wherein the pumping element 22 is designed in an annular manner and is pressed against the inner periphery of the annular pumping chamber element 22 by means of the clamping element 98 and the additional clamping element 100, while the clamping element 98 and the additional clamping element 100 are placed on the pumping element 22 on opposite sides of the pumping element 22. The clamping element 98 and additional pressure element 100 of the pressure block 96 preferably have at least essentially the same design. The clamping element 98 and the additional clamping element 100 are placed on the pumping chamber element 20 mirror-symmetrically, in particular, in order to press the pumping element 22 against the pumping chamber element 20 and to press the sealing extension 90 against the sealing groove 88. The pumping chamber element 20 has, according to at least a groove, preferably a sealing groove 88, which in particular extends along the inner periphery of the annular pumping chamber element 20, and against which at least the sealing extension 90, in particular of the annular pumping element 22, is pressed by means of the pressing element 98, in particular by a clamping ring and/or by means of an additional pressing element 100 of the pressing block 96, wherein the compression of the sealing extension 90 is non-uniform along the maximum longitudinal extent of the sealing extension 90, in particular along the circumferential direction of the pumping element 22. Alternatively or in addition to the varying level of the pressing surface 104 of the pressure element 98 and/or additional pressure element 100, it is possible that the pumping element 22 has at least a sealing extension 90 which is pressed against the inner periphery of the annular pumping chamber element 20 by the pressure block 96 and has a varying maximum thickness 68 along the maximum longitudinal extent of the seal extension 90, in particular along the circumferential direction of the pumping element 22. Various designs of the pressure block 96, considered appropriate by those skilled in the art, to form a non-uniform compression of the seal extension 90 along the circumferential direction in the seal region 102 are similarly possible .

Claims (9)

1. A pumping device, at least for pumping a fluid, with at least one pumping chamber (18), with at least one dimensionally stable pumping chamber element (20), which at least partially limits the pumping chamber (18) , and with at least one resiliently deformable and, in particular, annular pumping element (22), in particular a pumping membrane, which limits the pumping chamber (18) together with the pumping chamber element (20) and is placed on the pumping chamber element (20), at the same time, the pumping element (22) has at least one sealing extension (90), which is integral with the main body (76) of the pumping element (22) and is at least partially located in the sealing groove (88) of the pumping chamber element ( 20), when the pumping element (22) is placed on the pumping chamber element (20), characterized in that the pumping chamber element (20) has an opposite surface (74) for interaction with the pumping surface (78) of the main body (76) of the pumping element ( 22) to pump a fluid, wherein said opposite surface extends over at least three circular arcuate sections which are arranged in series, in particular when viewed in cross section, and wherein at least one edge region (92) of the pumping chamber element (20), limiting the sealing groove (88), is placed in such a way that it borders directly on at least one of the three circular arcuate sections. 2. The pumping device according to claim 1, characterized in that the sealing groove (88) is made in such a way that the sealing extension (90) and the edge area (92) of the pumping chamber element (20), limiting the sealing groove (88), flatly adjoin to each other. 3. The pumping device according to claim 1 or 2, characterized in that the sealing groove (88) and the edge area (92) of the pumping chamber element (20), which limits the sealing groove (88) and is located on the side of the sealing groove (88), facing the pumping surface (78) of the main body (76) of the pumping element (22), are made in such a way that the sealing extension (90) flatly adjoins the edge region (92) of the pumping chamber element (20), limiting the sealing groove (88), and to the base (94) of the sealing groove (88). 4. Pumping device according to one of the preceding claims, characterized in that the sealing groove (88) completely passes around the opposite surface (74) of the pumping chamber element (20), which interacts with the pumping surface (78) of the main body (76) of the pumping element ( 22) to pump the fluid, while the sealing groove defines the opposite surface (74). 5. A pumping device according to one of the preceding claims, characterized in that the sealing extension (90) extends completely around the pumping surface (78) of the main body (76) of the pumping element (22) and defines the pumping surface (78). 6. Pumping device according to one of the preceding claims, characterized in that the sealing extension (90) has a transitional area to the edge area of the main body (76) of the pumping element (22), while said transitional area has a cross section that differs from the cross section additional transition area of the sealing extension (90) to the pumping surface (78) of the main body. 7. Pumping device according to one of the preceding claims, characterized by at least one pressure block (96), which has at least one pressure element (98, 100), in particular at least one clamping ring, which is intended to act on the sealing extension (90) with the help of a pressing force in the direction of the pumping chamber element (20) and to compress the sealing extension (90), at least in the area of the sealing groove (88). 8. A pumping device according to one of the preceding claims, characterized in that the sealing extension (90) extends over the pumping surface (78) along a direction extending across, in particular at least substantially perpendicular to, the pumping surface (78) of the main body (76) pumping element (22). 9. A pump with at least one pumping device according to one of the preceding claims.

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