RU2796976C1 - Pump with a pumping device at least for pumping a fluid medium, and such pumping device - Google Patents

Abstract

FIELD: pump devices.

SUBSTANCE: invention is related to a pumping device, at least for pumping a fluid medium, and to a pump containing such a pumping device. The pump designed at least for pumping a fluid medium contains at least one pumping device, which has at least one pumping chamber (18), at least one dimensionally stable pumping chamber element (20), which at least partially limits the pumping chamber (18), and at least one elastic pumping element (22), which together with the pumping chamber element (20) limits the pumping chamber (18) and is placed on the pumping chamber element (20); at least one drive unit (16) for acting on the pumping device; and at least one housing (14) for the pumping device. The housing (14) is formed separately from the pumping device as a whole, so that the pumping device can be taken out as a whole from the housing (14). The pumping chamber element (20) has an outer surface, which, in the state when the pumping device is placed in the housing (14), is connected with a power and/or positive lock to the inner surface of the housing (14), in particular, rests on the inner surface of the casing (14) . The pumping chamber element (20), at least over a large extent, surrounds the pumping element (22) along a peripheral direction passing in a plane at least substantially perpendicular to the drive axis (70) of the drive unit (16).

EFFECT: improvement of properties of the pump and/or pumping device with respect to the advantageous ease of maintenance and/or pumping function.

10 cl, 10 dwg

Description

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

A pump at least for pumping a fluid is already known from DE 10 2017 104 400 A1, the pump comprising at least one pumping device which has at least one pumping chamber, at least one stable pumping chamber element, which at least partially limits the pumping chamber, and at least one resiliently deformable pumping element, which, together with the pumping chamber element, limits the pumping chamber and is placed on the pumping chamber element, at least one drive unit for acting on the pumping device, and at least one casing for receiving the pumping device.

In addition, a pump for at least pumping a fluid is already known from DE 10 2012 023 900 A1, wherein the pump comprises at least one pumping device formed as an elastically deformable pump hose, which has at least , one pumping chamber, one resiliently deformable pumping chamber element, and at least one elastically deformable pumping element, which together with the pumping chamber element limits the pumping chamber and is placed as a whole with the pumping chamber element, while the pumping chamber element is formed from stronger material than the pumping element, but is essentially resilient.

In addition, a pump for at least pumping fluid is already known from DE 297 14 484 U1, wherein the pump comprises at least one pumping device, which has at least one pumping chamber, at least one dimensionally stable pumping chamber element, which at least partially delimits the pumping chamber, and at least one resiliently deformable pumping element, which together with the pumping chamber element delimits the pumping chamber and is placed on the pumping chamber element, and, according to at least one drive unit for acting on the pumping device, and at least one casing for receiving the pumping device, the casing being formed at least separately from the pumping chamber element of the pumping device.

The purpose of the invention is, in particular, to provide a common pump and/or pumping device with improved properties with regard to advantageous ease of use and/or pumping function. According to the invention, the object is achieved by the features of claim 1, while advantageous configurations and improvements of the invention can be derived from the dependent claims.

Benefits of the Invention

The invention is based on a pump, at least for pumping a fluid, containing at least one pumping device, which has at least one pumping chamber, at least one dimensionally stable pumping chamber element, which, according to at least partially limits the pumping chamber, and at least one elastically deformable pumping chamber element, which, together with the pumping chamber element, limits the pumping chamber and is placed on the pumping chamber element, at least one drive unit for acting on the pumping chamber device, and containing at least one casing for receiving the pumping device, while the casing is formed at least separately from the pumping chamber element of the pumping device, in particular, from the pumping device as a whole, in particular, so that the pumping chamber the element, in particular the pumping device, can be removed in one piece from the casing.

It is proposed that the pumping chamber element has an outer surface, which, in the state when the pumping device is placed on the casing, is connected with force and/or positive locking to the inner surface of the casing, and which, in particular, rests on the inner surface of the casing, while the pumping chamber element surrounds the pumping element for at least a large extent along a circumferential direction extending in a plane extending at least substantially perpendicular to the drive axis of the drive unit. In the state where the pumping device, in particular the pumping device as a whole, is placed in the casing, the outer surface of the pumping chamber element preferably rests at least partially on the inner surface of the casing, in particular at least on the inner surface of the lower part of the casing. for the casing. Preferably, more than 30%, preferably more than 40%, in particular preferably less than 95%, and most preferably between 40% and 60% of the total outer surface of the outer surface of the pumping chamber element rests on the inner surface of the casing, in particular on the inner surface of the bottom casing parts for casing. The casing, in particular the lower part of the casing, preferably has a recess in which the pumping device can be placed, in particular is placed. The recess of the casing, in particular the lower part of the casing, is preferably limited by a collar-like extension in the inner part of the casing, in particular in the lower part of the casing. The yoke-like extension extends through less than 360°, in particular in order to arrange the inlet and outlet region of the pumping device in the casing, in particular in the lower part of the casing. Preferably, the outer surface of the pumping chamber element is located at a distance relative to the inner surface of the upper part of the casing for the casing, at least along a direction extending at least substantially perpendicular to the drive axis of the drive unit. However, it is also possible that the upper part of the casing has a collar-like extension which has a recess at least partially for receiving the pumping chamber element, in particular the pumping device on which the outer surface of the pumping chamber element rests. Other configurations for the layout of the pumping device in the interior of the casing, which are considered appropriate for experts in this field of technology, are also possible.

It should be understood here that "a block/device formed separately from [...], or an element formed separately from [...]" means, in particular, a block/device or element that can be removed as a whole, in in particular without destroying or disassembling individual parts, in particular from an additional element or from an additional block, for example, from a casing, in particular at least from the lower part of the casing for a casing, etc., in particular after dismantling the upper part of the housing for the housing, or after detaching at least one fastener provided to secure the block to the element or to the additional block. In particular, the pumping device is functional in the state of being taken out from the case. It should be understood that "provided" means, in particular, specially adapted, specially designed and/or specially equipped. The fact that an element and/or block is(are) provided in order to perform a particular function is to be understood in particular that the element and/or block perform(s) and/or perform(s) that particular function, in at least one application and/or operational state. Preferably, the pumping device can be removed from the housing without dismantling into separate parts of the pumping device, in particular as a whole. Preferably, at least the pumping chamber element and the pumping element can be removed together from the housing. Preferably, the pumping device, in particular as a whole, can be replaced after removal with a replaceable or replaceable device, which, with respect to at least one function of the replaceable or replaceable device, corresponds to at least essentially at least one function pumping device. Preferably, the pump is provided 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 automotive sector, medical sector, water treatment sector, etc.

Preferably, the pumping element comprises a main body. In particular, the main body comprises at least one pumping side and at least one activation side. Preferably, the pumping side of the main body is placed on the side of the main body facing away from the activation side of the main body. In particular, the pumping side forms the outer surface of the main body. Preferably, the activation side forms the inner surface of the main body. Preferably, at least one activation extension of the pumping element is placed on the activation side. Preferably, the activating extension is provided with the ability to interact with the transmission element of the drive unit, in particular at least two transmission elements of the drive unit. Preferably, the transmission element(s) is placed on the drive element of the drive unit. Preferably, the main body has an annular configuration. Preferably, the main body has an annular slotted configuration. In particular, the main body, when viewed in a plane, in particular in a plane extending at least substantially perpendicular to the drive axle of the drive axle, has a cross-sectional shape that essentially consists of a circular arc or an open ring extending along an angular range 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 which are directly adjacent to the circular arc or open ring, in particular at the end areas of a circular arc or an open ring. The activating extension is preferably located in a circular arc or annular extension of the main body on the main body, in particular on the inner surface of the main body. The expression "substantially perpendicular" is intended, in particular, to define the orientation of the direction with respect to the reference direction, whereby the direction and the reference direction, in particular when viewed in the plane of the projection, cover an angle of 90°, and the angle has a maximum deviation, in particular less than 8°, preferably less than 5°, and in particular preferably less than 2°. The maximum longitudinal extent of the activation extension is in particular at least 5%, preferably 10%, and in particular preferably at least 20% less than the maximum longitudinal extent of the main body. Preferably, the activating extension 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 in which the inlet and/or outlet extension of the main body is located in each case. . Preferably, the activation extension extends along an angular range, in particular less than 360°, preferably less than 350°, and in particular preferably greater than 180° on the activation side.

Advantageously, the pumping chamber element, in particular the pumping membrane, can 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 a driving force acting in the direction away from the activation side, in particular to generate a negative pressure in the transfer chamber. Preferably, as a result of moving the pumping device, in particular the pumping membrane, in the direction away from the opposite surface, a negative pressure can be generated, which, in particular, is less than -0.1 bar, preferably less than -0.2 bar, and in particular , preferably less than -0.3 bar, in particular relative to the atmospheric pressure surrounding the pumping device. Preferential pumping of the pumped medium into the pumping chamber of the pumping device, which is at least partially limited by the opposite surface of the pumping chamber element and the pumping surface of the pumping element, can be achieved.

Preferably, the pumping element, in particular the pumping diaphragm, can be actuated by means of a drive unit, so that it becomes possible to pump the pumped medium, in particular fluid, according to the migrating wave principle (see, for example, the disclosure of EP 1 317 626 B1 ). The drive unit can be configured as a mechanical drive unit, as a magnetic drive unit, as a piezoelectric drive unit, as a hydraulic drive unit, as a pneumatic drive unit, as an electric drive unit, as a magnetorheological drive unit, as a drive unit on carbon tubes, as a combination of one of the above types of drive units, or as any other drive unit as deemed appropriate by those skilled in the art. Preferably, the drive unit comprises at least a drive element which is provided to act on the pumping element, in particular the pumping membrane. However, it is also possible that the drive unit has a number of drive elements other than one that are provided to act on the pumping element. Preferably, the drive element is provided with the ability to elastically deform the pumping element, in particular the pumping membrane, as a result of the action of a driving force on the pumping element, in particular the pumping membrane. The actuating member may have any configuration deemed appropriate by those skilled in the art, such as a plunger, extension, engagement ring, hook, gripper, and the like. Preferably, the drive element is formed as an eccentric shaft. Preferably, the eccentric shaft can be rotatably driven by a pump motor unit that includes a pumping device in a manner already known to those skilled in the art. The motor unit can be configured as 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 preferably defined by a pumping surface and an opposite surface opposite the pumping surface. The pumping chamber element is preferably dimensionally stable. Preferably, the pumping chamber element is preloaded, in particular in order to apply a force to the pumping element in the direction of the drive unit and/or the pressing unit of the pumping device. Preferably, the pumping element, in particular the pumping membrane, is configured to be springy. "Springy" is to be understood in particular as a property of an element, in particular a pumping element, which is provided in particular to generate a reaction force which depends on the change in the shape of the element and is preferably proportional to the change and which counteracts the change. The pumping element, in particular the pumping membrane, is preferably deformable repeatedly, in particular without mechanical damage or destruction as a result of this pumping element, in particular the pumping membrane. Preferably, the pumping element, in particular the pumping membrane, in particular, after deformation automatically tends again to the basic shape, in particular to the main shape, convex-curved relative to the opposite surface, in particular the zero position of the pumping element, in particular the pumping membrane . Preferably, the spring configuration of the pumping element, in particular the pumping membrane, can be at least partially affected and/or created by the configuration, in particular the geometrical configuration of the main body and/or by arranging the pumping element, in particular the pumping membrane, on 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 driving force for the pumping element, in particular the pumping membrane, to pump the fluid is eliminated, the pumping surface of the pumping element, in particular the pumping membrane, returns to an arrangement that is convex-curved with respect to the opposite surface. , preferably at least substantially automatically, in particular as a result of the springy configuration. The pumping element, in particular the pumping membrane, is preferably formed from a rubber-like and/or rubbery material. However, it is also possible that the pumping device, in particular the pumping membrane, is formed from another material that is considered appropriate by those skilled in the art, or from a combination of several materials, which provides a springy configuration of the pumping element, in particular, transfer membrane. Preferably, the pumping element, in particular the pumping membrane, 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 depressed to pump the fluid, wherein at least one depression is displaceable, in particular displaceable by rolling along the pumping surface to pump the fluid. It should be understood that "provided" means specially adapted, specially designed and/or specially equipped. The fact that an element and/or block is(are) provided for a particular function is to be understood, in particular, that the element and/or block perform(s) and/or perform(s) that particular function, at least in one state of use and/or operating state.

By means of the configuration according to the invention, the convenient exchange or removal of the pumping device as a whole from the casing can be realized in a highly advantageous manner. Advantageously, a high level of serviceability can be achieved. Advantageously, maintenance and assembly costs can be kept low.

In addition, it is proposed that the casing, at least over a large extent, surrounds the pumping chamber element, in particular the pumping device, along a peripheral direction extending in a plane extending at least substantially perpendicular to the drive axis of the drive unit. Preferably, the pump comprises at least one, in particular, the aforementioned drive unit, having at least one, in particular, the aforementioned drive element, in particular, at least one eccentric shaft, which is surrounded, for a large extent , by means of the pumping chamber element, the pumping element and the pressure block of the pumping device, in particular when viewed along a peripheral direction extending around the drive axis of the drive block. Preferably, the drive unit, in particular at least the drive element, is completely surrounded by the pumping chamber element, the pumping element and the pressure block, in particular when viewed along a peripheral direction extending along the drive axis of the drive unit. Preferably, the casing completely surrounds at least the pumping chamber element, in particular the pumping device, along a circumferential direction extending in a plane extending at least substantially perpendicular to the drive axis of the drive unit. Preferably, the pumping chamber element surrounds the pumping element at least over a large extent along a circumferential direction extending in a plane extending at least substantially perpendicular to the drive axis of the drive unit. Preferably, the pumping chamber element completely surrounds the pumping element along a circumferential direction extending in a plane extending at least substantially perpendicular to the drive axis of the drive unit. By means of the configuration according to the invention, encapsulation of the pumping device can advantageously be achieved. There is a significant advantage if the pumping device can be replaced or removed integrally from the housing in a convenient manner. Advantageously, a high level of serviceability can be achieved. Advantageously, maintenance and assembly costs can be kept low.

In addition, it is proposed that the pumping chamber element, when viewed along a direction passing transversely to the drive axis of the drive unit, is located at least between the casing and the pumping element of the pumping device, in particular immediately next to the casing and the pumping element, or with direct support on the casing and pumping element. It is possible that a gap, in particular a small gap, is present at least between the pumping chamber element and the housing, in particular the lower part of the housing and/or the upper part of the housing, in particular to allow clearance for arranging the pumping device in casing. By means of the configuration according to the invention, encapsulation of the pumping element in the casing can advantageously be achieved. There is a significant advantage if the replacement or removal of the pumping device as a whole from the casing can be carried out in a convenient way, in particular since at least the pumping element together with the pumping chamber element can be removed from the casing. Advantageously, a high level of serviceability can be achieved. Advantageously, maintenance and assembly costs can be kept low.

In addition, the invention is based on a pumping device, in particular on the above pumping device for a pump, in particular for a pump according to the invention, while the pumping device comprises at least one pumping chamber element, in particular the above pumping chamber, and , at least one pumping chamber element, in particular, is formed separately from the casing, in particular, from the above casing and at least partially limits the pumping chamber, which is formed in a dimensionally stable way, and at least one resiliently a deformable pumping element, in particular, the above pumping chamber element, in particular, the above pumping element, in particular, a pumping membrane, which together with the pumping chamber element defines the pumping chamber and is placed on the pumping chamber element, while the pumping chamber element surrounds the pumping element, at least over a large extent along a circumferential direction extending in a plane extending at least substantially perpendicular to the drive axis of the drive unit, in particular of said drive unit. It is proposed that the pumping chamber element is formed at least over a large extent, in particular entirely, from a plastic material, in particular from an injection molded plastic material. However, it is also possible that the pumping chamber element is formed from another material that is considered appropriate by those skilled in the art, such as biodegradable material, metal, etc., and/or that the pumping the chamber element is formed by another manufacturing method that is considered appropriate by those skilled in the art, for example, by a 3D printing method, by a tension method, by a milling process, by an injection molding process, and the like. Preferably, the pumping chamber element completely surrounds the pumping element along a circumferential direction, in particular in a plane extending at least substantially perpendicular to the drive axis of the drive unit. Preferably, the pumping element is located at least over a large extent, in particular completely, in particular in the annular pumping chamber element. By means of the configuration according to the invention, a weight-optimized configuration can advantageously be realized. Cost-effective manufacturing can become possible. Advantageously, encapsulation of the pumping element in the pumping chamber element can be achieved.

In addition, it is proposed that the pumping chamber element is annular in shape. Preferably, the pumping chamber element has an annular slotted configuration. In particular, the pumping chamber element, when viewed in a plane, in particular in a plane extending at least substantially perpendicular to the drive axis of the drive unit, has a cross-sectional shape that essentially consists of a circular arc or open ring extending along of an angular range less than 360° and in particular greater than 90°, and two transverse extensions extending transversely to the circular arc or to the open ring, which directly adjoin the circular arc or open ring, in particular in the end regions of the circular arc or open ring. By means of the configuration according to the invention, the reception of the pumping element in the pumping chamber element can be implemented in a structurally simple manner.

Furthermore, it is proposed that the pumping chamber element has an opposite surface, in particular the aforementioned opposite surface, which interacts with the pumping surface of the pumping element, in particular the aforementioned pumping surface for pumping fluid, this opposite surface facing the pumping element and having , at least one elevation directed in the direction of the pumping element. Preferably, the opposite surface contains at least two elevations facing the pumping element. Preferably, the opposite surface includes at least one recess facing away from the pumping element. Preferably, the opposite surface extends over at least three successive circular arcuate sections, in particular when viewed in cross section. Circular arcuate sections preferably form the opposite surface. Two of the three circular arcuate sections preferably form two elevations of the opposite surface and are placed on the outside. One of the three arcuate sections preferably forms a recess and is placed on the inner side, in particular, is placed spatially between two elevations. It is possible that the three circular arcuate sections have different or identical radii. By means of the configuration according to the invention, efficient pumping of the fluid can advantageously be realized. In particular, advantageously, reliable pumping of the fluid can be achieved.

It is additionally proposed that, when viewed along a circumferential direction, the elevation extends at least substantially along the entire inner surface of the pumping chamber element, which extends in particular in the form of a circular arc. The inner surface of the pumping chamber element preferably faces the pumping element, in particular the pumping surface of the pumping element. By means of the configuration according to the invention, efficient pumping of the fluid can advantageously be realized. In particular, advantageously, reliable pumping of the fluid can be achieved.

It is also proposed that the pumping chamber element has at least one connection area located, in particular, on the inner surface of the pumping chamber element, in particular at least one connection groove, preferably a sealing groove, with which at least at least one edge region of the pumping element, in particular an extension, preferably a sealing extension of the pumping element, placed on the edge of the pumping element, engages, in particular engages with the seal in the state of placement on the pumping chamber element. Preferably, the pumping element comprises a sealing extension which is integrally formed with the main body of the pumping element and, in the state where the pumping element is placed on the pumping chamber element, is located at least partially in the sealing groove of the pumping chamber element. In particular, it should be understood that "as a whole" means at least tightly bonded, for example, through a welding process, an adhesive process, an injection molding process, and/or other process that is considered appropriate by those skilled in the art, and /or predominantly formed in one part, for example, by manufacturing using casting and/or by manufacturing using a one-component or multi-component injection molding process and predominantly using a single workpiece. Preferably, the sealing extension is placed on the pumping side of the main body of the pumping element. In particular, the sealing extension on the pumping side extends over the pumping surface of the pumping element, in particular when viewed along a direction extending at least substantially perpendicular to the pumping surface. Preferably, the sealing extension has a sealing lip that extends over the pumping surface along a direction that is at least substantially perpendicular to the pumping surface. When viewed in a plane that is 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 semi-circular or elliptical in shape. However, there is also the possibility that the sealing lip has a different cross section, which is considered appropriate by those skilled in the art. The sealing protrusion or the entire sealing extension is placed in a bead shape on the outer edge of the main body. The sealing lip has a main direction of extension which is aligned at least substantially perpendicular to the pumping surface, in particular aligned in a direction away from the pumping side.

Preferably, the sealing groove has a shape corresponding to the sealing extension, in particular at least the sealing lip, in particular the corresponding cross section. Preferably, the sealing groove 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. Preferably, the sealing groove is placed on the inner surface of the pumping chamber element facing the pumping element. Preferably, the sealing groove is located in the outer edge region of the pumping chamber element. Preferably, the sealing groove has a maximum distance from the outer edge of the pumping chamber element, this outer edge forming a transition between the inner surface facing the pumping element and the outer surface of the pumping chamber element facing away from the pumping element, and this distance, in particular, is less than 15 mm, preferably less than 10 mm, particularly preferably less than 8 mm, and most preferably between 12 mm and 6 mm. Preferably, the sealing groove has a maximum distance from the outer edge of the pumping chamber element, which corresponds in particular to at least one half, in particular 50% of the maximum transverse extent of the sealing groove, preferably corresponds to at least the maximum transverse extent of the sealing groove and, in particular, preferably corresponds to a multiple of the maximum transverse extent of the sealing groove. The maximum transverse extent preferably runs 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. Here it is to be understood that "essentially parallel" means in particular an orientation of the direction relative to the reference direction, in particular in a plane, the direction having a deviation relative to the reference direction, which is in particular less than 8°, preferably less than 5°, and in particular preferably less than 2°. By means of the configuration according to the invention, an advantageous sealing effect can be achieved. Advantageously, reliable sealing can be achieved. Advantageously, leakage can be counteracted. Advantageously, efficient pumping of the fluid can be realized. In particular, advantageously, reliable pumping of the fluid can be achieved.

In addition, it is proposed that the pumping chamber element comprises at least one connection piece for a fluid supply adapter and at least one additional connection piece for a fluid outlet adapter, which are placed on the side, in particular, on the outer surface of the pumping chamber element facing away from the pumping element. The connecting part and/or the additional connecting part is preferably (are) located on at least one transverse extension of the pumping chamber element, in particular, is (are) formed in one piece with the corresponding transverse extension. The connecting piece and/or the additional connecting piece has(s) in particular in each case a main extension axis which runs transversely, in particular at least substantially perpendicular to the main extension plane of at least one transverse extension, in in particular, the corresponding transverse elongation. Preferably, the main axis(s) of extension of the connecting piece and/or the additional connecting piece(s) extend(s) transversely, in particular at least substantially perpendicular to the main pumping direction of the pumping chamber. Preferably, the main axis(s) of pulling the connecting piece and/or the additional connecting piece extend(s) at least substantially parallel to a plane extending at least substantially perpendicular to the drive axis of the drive unit. The connecting piece and the additional connecting piece are preferably arranged in different, in particular opposite, orientations on the side facing away from the pumping element, in particular on the outer surface of the pumping chamber element. Preferably, the connection piece and the additional connection piece extend from the outer surface of the pumping chamber element in different, in particular in opposite directions. In the state where the pumping device is placed in the casing, the connecting piece and/or the additional connecting piece is(are) placed at a distance relative to the inner wall of the casing, in particular at least the upper part of the casing and/or the bottom part of the casing, in particular if look along the main axis(s) of extent of the connecting piece and/or the additional connecting piece. Preferably, in the state where the pumping device is placed in the casing, the connecting part and/or the additional connecting part are placed at a distance relative to the inner wall of the casing, in particular relative to the inner surface of the upper part of the casing and/or the inner surface of the lower part of the casing along the entire periphery of the connecting part and/or additional connecting piece. However, it is also possible that, in an alternative configuration of the pump and/or pumping device, the connecting piece and/or the additional connecting piece rest(s) on the inner wall of the casing, in particular on the inner surface of the upper part of the casing and/or on the inner surface of the lower part of the casing, in particular, are supported on the inner wall of the casing, in particular, on the inner surface of the upper part of the casing and/or on the inner surface of the lower part of the casing, in a state where the pumping device is placed in the casing. By means of the configuration according to the invention, efficient pumping of the fluid can be realized. In particular, advantageously, reliable pumping of the fluid can be achieved. The interchangeability of the fluid supply adapter and/or the fluid outlet adapter can be achieved in a structurally simple manner.

In addition, it is proposed that the pumping element is formed, at least over a large extent, in particular entirely, from rubber, in particular from synthetic rubber. The pumping element may be formed, for example, from ethylene propylene diene (monomer) rubber (EPDM), fluorocarbon rubber or fluororubber (FKM), acrylonitrile butadiene rubber (NBR) and the like. Other materials that are considered appropriate by those skilled in the art are also possible. By means of the configuration according to the invention, the elastic configuration of the pumping element can be realized in a simple manner. Advantageously, efficient pumping of the fluid can be achieved in particular by automatically resetting the pumping element as a result of the springy configuration of the pumping element.

The pump according to the invention and/or the pumping device according to the invention is not intended to be limited to the application and embodiment described above. In particular, the pump according to the invention and/or the pumping device according to the invention may have a number of individual elements, components and assemblies that deviate from the number mentioned in this document in order to satisfy the operating mode described in this document. In addition, for the ranges of values disclosed in this disclosure, values falling within the above ranges should also be considered disclosed and applicable as required.

Brief description of the drawings

Additional advantages should become apparent from the following description of the drawings. In the drawings, an exemplary embodiment of the invention is shown. The drawings, description and claims contain many features in combination. Those of skill in the art would, as appropriate, also consider the features separately and combine them to form useful additional combinations.

On the drawings:

Fig. 1 shows a schematic illustration of a pump according to the invention with a pumping device according to the invention,

Fig. 2 shows a schematic illustration of a pump according to the invention with an open casing,

Fig. 3 shows a sectional view through a pump according to the invention in a schematic illustration,

Fig. 4 shows another sectional view through a pump according to the invention in a schematic illustration,

Fig. 5 shows a schematic illustration of a pumping device according to the invention in a state of removal from the pump casing,

Fig. 6 shows a schematic illustration of a pumping element of a pumping device according to the invention,

Fig. 7 shows a schematic illustration of the pumping chamber element of the pumping device according to the invention,

Fig. 8 shows a partial sectional view through the pumping element and the pumping chamber element in a schematic illustration,

Fig. 9 shows a schematic illustration of the pressure element of the pressure block of the pumping device according to the invention; And

Fig. 10 shows a schematic illustration of a fluid adapter or fluid outlet adapter of a pumping device according to the invention.

Description of an Exemplary Embodiment

Fig. 1 shows a pump 10 with at least one pumping device 12 for pumping at least one fluid (not shown in more detail here). The pumping device 12 is provided at least for pumping a fluid, in particular as a result of the action of the pump 10 drive unit 16 on the pumping device 12, in particular on the elastically deformable pumping element 22 of the pumping device 12. The pumping device 12 comprises at least at least one pumping chamber 18, at least one pumping chamber element 20, which at least partially defines the pumping chamber 18 and is formed in such a way that it is dimensionally stable, and at least elastically deformable, in in particular, an annular pumping element 22, which, together with the pumping chamber element 20, defines the pumping chamber 18 and is placed on the pumping chamber element 20 (see Fig. 4). The pumping element 22 is preferably formed as a pumping membrane. The pumping chamber element 20 is formed at least over a large extent, in particular entirely, from a plastic material, in particular from an injection molded plastic material. However, there is also the possibility that the pumping chamber element 20 is formed from another material that is considered appropriate by those skilled in the art. The pumping element 22 is preferably formed at least over a large extent, in particular entirely, from rubber, in particular from synthetic rubber such as EPDM, FKM, NBR and the like. However, there is also the possibility that the pumping element 22 is formed from another material that is 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 housing 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 member 24 is preferably formed as an eccentric shaft. However, it is also possible that the drive element 24 has a different configuration, which is considered reasonable by those skilled in the art, such as, for example, a rotationally symmetrical shaft on which at least one eccentric is placed to act on the pumping device 12 and the like. The drive element 24 can be connected directly, in particular by means of a rotatable fastening, or indirectly, for example, by means of a gear unit or at least one gear element, to the drive shaft of the motor unit (not shown in more detail here), such as an electric motor, internal combustion engine, pneumatic electric motor, and the like. 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.

Preferably, the pumping device 12 is located at least over a large extent, in particular completely in the casing 14. The casing 14 surrounds the pumping device 12, at least over a large extent, in particular completely. In particular, the casing 14 is provided in a manner known to those skilled in the art to at least partially, in particular completely enclose and/or support the pumping device 12 and/or the drive unit 16 of the pump 10. The casing 14 may be formed from a plastic material, metal, a combination of plastic material and metal, or any 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 any 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 as a whole, in particular so that the pumping chamber element 20, in particular the pumping device 12, can be taken out as one whole from casing 14. Preferably, the pumping chamber element 20, in particular the pumping device 12, can be removed in one piece from the casing 14 after disassembly of the upper part 36 of the casing, in particular, together with the pumping element 22 placed on the pumping chamber element 20. The pumping device 12, when disconnected during dismantling of the individual parts of the pumping device 12, can preferably be taken out as a whole from the casing 14, in particular after dismantling the upper part 36 of the casing for the casing 14. The casing 14 surrounds at least the pumping chamber element 20, in particular, the pumping device 12, at least over a large extent, along a circumferential direction extending in a plane extending at least substantially perpendicular to the drive axis 70 of the drive unit 16, in particular in a state where the pumping device 12, in in particular, the pumping device 12 as a whole is placed in the casing 14.

The pumping chamber element 20, when viewed along a direction extending transverse to the drive axis 70 of the drive unit 16, is located at least between the casing 14 and the pumping element 22 of the pumping device 12, in particular, directly next to the casing 14 or directly supported on the casing 14 (see Fig. 2). The pumping device 12 at least substantially completely surrounds the drive unit 16, at least in the state where the pumping device 12 is housed in the casing 14, in particular along a circumferential direction extending in a plane extending at least along essentially perpendicular to the drive axis 70 of the drive unit 16 . The pumping chamber element 20 has an outer surface which, in the state where the pumping device 12 is placed on the casing 14, is forcefully and/or positively connected to the inner surface of the casing 14, in particular rests on the inner surface of the casing 14, preferably directly. In the state where the pumping device 12, in particular the pumping device 12 is housed in one piece in the casing 14, the outer surface of the pumping chamber element 20 preferably rests at least partially on the inner surface of the casing 14, in particular at least on the inner surface of the lower part 72 of the casing for the casing 14. Preferably, more than 30%, preferably more than 40%, in particular, preferably less than 95%, and most preferably between 40% and 60% of the total outer surface of the outer surface of the pumping chamber element 20 is supported by the inner surface of the housing 14, in particular on the inner surface of the lower part 72 of the housing for the housing 14. The housing 14 preferably includes a recess in which the pumping device 12 can be placed, 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 contains at least one receiver 32, in particular at least two receivers 32, 34 for receiving at least one adapter 28 for supplying fluid and/or one adapter 30 for discharging fluid. fluid supply adapter 28 is preferably provided for connection to a liquid line, in particular to allow fluid to be supplied to the transfer chamber 18. A fluid outlet adapter 30 is preferably provided for connection to a liquid line, in particular to to realize the release of fluid from the pumping chamber 18. Preferably, the receiver(s) 32, 34 is(are) 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 of the housing 72 or the like. Preferably, the fluid adapter 28 and/or the fluid outlet adapter 30 is(are) connected to the receptacle(s) 32, 34 by means of a positive and/or positive connection, in particular attachment to the receptacle(s) 32, 34. For example, the receptacle(s) 32, 34 comprise(s) an internal thread on the inner surface for attaching the fluid adapter 28 and/or the fluid outlet adapter 30 to the housing 14, in particular to the upper part 36 of the housing ( see Fig. 3). However, it is also possible that the fluid adapter 28 and/or the fluid outlet adapter 30 are positioned, in particular attached to the receptacle(s) 32, 34 by means of a forming connection, in particular a threadless connection, for example , by insertion into the receptacle(s) 32, 34. The receptacle(s) 32, 34 extends continuously from the outer surface of the casing 14, in particular the upper part of the casing 36, up to the inner surface of the casing 14, in particular the upper part 36 casing. The receiver(s) 32, 34 are preferably formed as a through hole(s) from the outer surface to the inner surface of the housing 14. In a state where the pumping device 12 is housed in the housing 14, the fluid adapter 28 and/or the 30 for the release of fluid extend(s) from the pumping chamber element 20 at least into the outer surface of the casing 14, in particular beyond it, preferably in the connected state of the connecting part 38 of the pumping chamber element 20 with the adapter 28 for supplying fluid and/or in the connected state, in particular, an additional connecting part 40 of the pumping chamber element 20 with an adapter 30 for the release of fluid (see Fig. 3).

The connecting piece 38 and/or, in particular, the additional connecting piece 40 is(are) located, in particular in each case, at least one transverse extension 60, 62 of the pumping chamber element 20, in particular, is (are) formed as integral with the corresponding transverse extension 60, 62 (see Fig. 2, 3, 5 and 7). In particular, the pumping chamber element 20, when viewed in a plane, in particular in a plane extending at least essentially perpendicular to the axis 26 of rotation of the drive unit 24, in particular the drive axis 70 of the drive unit 16, has a cross-sectional shape, which consists essentially 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 which directly adjacent to the circular arc or open ring, in particular in the end regions of the circular arc or open ring. The connecting piece 38 and/or in particular the additional connecting piece 40 has(are) in particular in each case a main extension axis 64, 66 which extends transversely, in particular at least substantially perpendicular to the main extension plane, at least one transverse extension 60, 62, in particular a corresponding transverse extension 60, 62. Preferably, the main axis(s) of extension 64, 66 of the fitting 38 and/or, in particular, of the additional connecting part 40, pass(s) transversely, in particular at least substantially perpendicular to the main pumping direction of the pumping chamber 18, along which the fluid can be pumped through the pumping chamber 18. , the additional connecting piece 40 extends(are) at least substantially parallel to a plane extending at least substantially perpendicular to the rotational axis 26 of the drive element 24. The connecting piece 38 and, in particular, the additional connecting piece 40 are placed in different , in particular in opposite orientations on the side facing away from the pumping element 22, in particular on the outer surface of the pumping chamber element 20. Preferably, the connecting piece 38 and in particular the additional connecting piece 40 extend from the outer surface of the pumping chamber element 20 in different, in particular opposite directions. Preferably, the connecting piece 38, and in particular the additional connecting piece 40, extends from the outer surface of the pumping chamber element 20 in directions facing away from the pumping chamber element 20, the directions being oriented in opposite directions.

In the state where the pumping device 12 is placed in the casing 14, the connecting piece 38 and/or in particular the additional connecting piece 40 is (are) located at a distance relative to the inner wall of the casing 14, in particular at least relative to the upper part 36 of the casing and/or the lower part 72 of the casing, in particular when viewed along the main axis(s) of extent 64, 66 of the connecting piece 38 and/or in particular the additional connecting piece 40 (see FIGS. 2 and 3). Preferably, in the state where the pumping device 12 is placed in the casing 14, the connecting piece 38 and/or in particular the additional connecting piece 40 is (are) located at a distance relative to the inner wall of the casing 14, in particular, relative to the inner surface of the upper part 36 of the casing and/or the inner surface of the lower part 72 of the casing along the entire periphery of the connecting part 38 and/or in particular the additional connecting part 40. In particular, the minimum distance of the connecting part 38 and/or in particular the additional connecting part 40 relative to the inner wall of the casing 14, with respect to the inner surface of the upper housing part 36 and/or the inner surface of the lower housing part 72 is greater than 0.001 mm, preferably greater than 0.01 mm, particularly preferably greater than 0.1 mm, and most preferably less than 10 mm. Preferably, the minimum distance of the fitting 38 and/or in particular the additional fitting 40 relative to the inner wall of the housing 14, in particular relative to the inner surface of the upper housing part 36 and/or the inner surface of the lower housing part 72 has a value in the range of 0 .1 mm to 5 mm. However, it is also possible that, in an alternative configuration of the pump 10, the connecting piece 38 and/or in particular the additional connecting piece 40 rests on the inner wall of the casing 14, in particular on the inner surface of the upper part 36 of the casing and/or on the inner surface of the lower case part 72, in particular, is supported on the inner wall of the case 14, in particular, on the inner surface of the upper case part 36 and/or on the inner surface of the lower case part 72, in the state that the pumping device 12 is placed in the case 14 .

The pumping chamber element 20 comprises at least a connection piece 38 for an adapter 28 for supplying fluid, which in particular is formed differently from the hose, and/or at least in particular an additional connection piece 40 for an adapter 30 for the outlet of the fluid, which, in particular, is formed differently from the hose, which(s) are placed on the side facing away from the pumping element 22, in particular on the outer surface of the pumping chamber element 20 (see Fig. 2, 3, 5 and 7). The fluid supply adapter 28 and/or the fluid outlet adapter 30 are (are) preferably tubular in shape. The fluid adapter 28 and/or the fluid outlet adapter 30 preferably has(s) a conically extendable plug end 44, 46 (see FIGS. 3 and 10). The plug end 44, 46 of the fluid adapter 28 and/or the fluid outlet adapter 30 is received in the fitting 38 or in particular in the additional fitting 40 in a state where the fluid adapter 28 and/or the adapter 30 for the fluid outlet is(are) located on the pumping chamber element 20. Preferably, the fluid adapter 28 and/or the fluid outlet adapter 30 comprises a coupling end 48, 50 for connection to the supply line or to the outlet line, with a fluid inlet or outlet line from/to the transfer chamber 18. It is also possible that a fluid inlet adapter 28 and/or a fluid outlet adapter 30 is(are) provided for connection with other components deemed appropriate for those skilled in the art such as fluid coupling fittings, hose nozzles, and the like. The coupling end 48, 50 is positioned on the side of the fluid supply adapter 28 or the fluid outlet adapter 30 facing away from the plug end 44, 46. Preferably, the fluid adapter 28 and the fluid outlet adapter 30 have, at least substantially identical configuration. However, it is also possible that the fluid adapter 28 and the fluid outlet adapter 30 are at least partially formed differently relative to each other, such as in the configuration of the function block 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 and a fluid supply adapter 28 and/or a fluid outlet adapter 30, the functional unit 58 being located at least at least partially, in particular, completely in the adapter 28 for the supply of fluid and/or in the adapter 30 for the release of the fluid (see Fig. 2, 3 and 10). Preferably, the functional unit 58 is at least partially, in particular completely tightly integrated in the fluid supply adapter 28 and/or in the fluid outlet adapter 30, or at least partially, in particular, completely interchangeably placed in adapter 28 for supplying fluid and/or adapter 30 for discharging fluid. The functional block 58, for example, may have one, in particular two filter and/or valve cartridges, which are placed in the fluid adapter 28 and/or in the fluid outlet adapter 30. Other configurations or arrangements of the functional block 58 that are considered appropriate by those skilled in the art are also possible, such as, for example, between the fitting 38 and the fluid adapter 28, or between, in particular, the additional fitting 40 and the adapter. 30 for discharging fluid and the like.

The fluid supply adapter 28 and/or the fluid outlet adapter 30 is(are) removably placed on the housing 14, in particular on the upper part 36 of the housing and/or on the pumping chamber element 20. The pump 10 comprises at least one a fixing block 42 for fixing the fluid supply adapter 28 and/or the fluid outlet adapter 30 on the housing 14, in particular on the upper part 36 of the housing, by means of a positive and/or positive connection. Preferably, the fixing block 42 comprises one, in particular two external threads, which are placed, in particular, on the outer surface of the receptacle(s) 32, 34 (see Fig. 1). It is possible that the fixing block 42 comprises at least one, in particular two screw caps (not shown in more detail here), which cooperate with the external thread(s) to secure the fluid adapter 28 and/or the adapter. 30 to release the fluid on the housing 14, in particular, to clamp the collar of the adapter 28 for fluid supply and/or adapter 30 for the release of fluid. Alternatively or additionally, anchoring block 42 preferably includes at least internal thread(s) to be received on receptacle(s) 32, 34. It is also possible that anchoring block 42, alternatively or additionally, comprises additional components, which are considered useful to those skilled in the art for attaching the fluid adapter 28 and/or the fluid outlet adapter 30 to the housing 14, in particular the upper part 36 of the housing, by means of a positive and/or positive connection, such as such as retaining ring, locking pin, etc.

The pumping device 12 includes at least one movement compensation unit 52, which is provided at least for the purpose of at least partially compensating and/or damping the relative movements between the fluid adapter 28 and the coupling piece 38 in the state when the connecting piece 38 is connected to the fluid adapter 28, and/or at least partially to compensate and/or dampen the relative movements between the fluid adapter 30 and, in particular, the additional connector 40 in the state, when, in particular, the additional connecting piece 40 is connected to the adapter 30 to release the fluid (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. Preferably, the damping element(s) 54, 56 is(are) formed as an O-ring. However, it is also possible that the damping element(s) 54, 56 has(are) other configurations that are considered appropriate by those skilled in the art, such as an elastomeric disk, a hollow elastomeric cylinder, and the like. Preferably, the damping element(s) 54, 56 is(are) located between the fitting 38 and the fluid adapter 28, or between, in particular, the additional fitting 40 and the fluid outlet adapter 30. In particular, the damping element(s) 54, 56 rest(s) on the inner surface of the connecting piece 38 and on the outer surface of the inlet end 44 of the adapter 28 for fluid supply, or on the inner surface, in particular, of the additional connecting piece 40 and on the outer surface the inlet end 46 of the fluid outlet adapter 30. Preferably, the damping element(s) 54, 56 are provided, in particular in addition to the movement damping, with the possibility of liquid sealing between the connecting piece 38 and the adapter 28 for fluid supply or with the possibility of liquid sealing between, in particular, an additional connecting piece 40 and adapter 30 for the release of the fluid.

The pumping element 22 comprises at least one main body, in particular at least one essentially annular main body 76 (see Fig. 3 and 6), which is elastically deformable and has at least one pumping surface 78, which is placed on the pumping side of the main body 76. In addition, the pumping element 22 preferably includes at least one activation extension 80, in particular, a plurality of activation extensions 80 for connection with at least one transmission element 82 of the block 16 of the drive, this transmission element cooperating with the activation extension 80, in particular, with a plurality of activation extensions 80 on the activation side of the main body 76. Preferably, the pumping side of the main body 76 is located on the main body 76 on the side of the main body 76 facing away from the activation side of the main body 76. In particular, the pumping side forms the outer surface of the main body 76. Preferably, the activation side forms the inner surface of the main body 76. In particular, the activation side forms at least partially the inner surface of the main body 76. The activation extension 80 , in particular, the activation extensions 80, in particular, are (are) formed integrally with the main body 76. However, it is also possible that the activation extension 80, in particular, the activation extensions 80 are (are) formed separately from the main body. body 76 and is(are) attached to the main body 76 by means of a positive and/or force-locking connection as deemed appropriate by those skilled in the art.

The activating extension 80, in particular the activating extensions 80, is(are) formed as positively and/or positively lockable element(s) that interact(s) with the transmission element 82 at least to transmit a driving force acting in the direction facing away from the activation side, by means of a positive and/or positive connection, in particular by means of a non-adhesive positive and/or positive connection. Preferably, the activation extension 80, in particular the activation extensions 80, are clamped between two transmission elements 82, in particular transmission rings, which are placed on the drive element 24 (see FIG. 4). The activating extension 80, in particular the activating extensions 80, together have(s) a maximum longitudinal extent that is less than the maximum longitudinal extent of the main body 76, in particular when viewed along a circumferential direction along the drive axis 70 of the drive unit 16.

Preferably, when viewed in a plane, in particular in a plane extending at least substantially perpendicular to the drive axle 70, the main body 76 has a cross-sectional shape that essentially consists of a circular arc or open ring and two inlet and/or exhaust extensions extending 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 extending transversely to the circular arc or open ring are preferably located immediately adjacent to 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 a plurality of successive activation extensions 80 along the central axis of the main body 76, in particular at least 5%, preferably at least 10%, and most preferably , at least 20% less than the maximum longitudinal extent of the main body 76. Preferably, the activation extension 80 or a plurality of successive activation extensions 80 extend together along an angular range, in particular greater than 270°, preferably less than 360° or 360° on the side activation.

The pumping chamber element 20 surrounds the pumping element 22 along a circumferential direction, in particular in a plane extending at least substantially perpendicular to the drive axis 70 of the drive unit 16, at least over a large extent (see FIGS. 3 and 5) . The pumping chamber element 20 is annular in shape. Preferably, the pumping chamber element 20 and the pumping element 22 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. In particular, the pumping chamber element 20 and the pumping element 22, in particular, the main body 76 of the pumping element 22 have a main shape that resembles the Greek letter "omega" as a capital letter, while, preferably, the extension of the pumping chamber element 20 and the pumping element 22 are at a 90° angle compared to the extensions of the Greek capital letter "Omega".

The pumping chamber element 20 has an opposite surface 74 cooperating with the pumping surface 78 of the pumping element 22 for pumping fluid, and this opposite surface faces the pumping element 22 and has at least one elevation 84, 86 directed towards the pumping element 22 ( see Fig. 4, 7 and 8). Preferably, the opposite surface 74 includes at least two elevations 84, 86 directed toward the pumping element 22. The elevation(s) 84, 86, as seen along the circumferential direction, extend(s) along at least substantially the entire inner surface, in particular the circular arcuate inner surface of the pumping chamber element 20. Preferably, the elevation(s) 84, 86 extend(s) along the inner surface of the pumping chamber element 20, starting from one of the transverse extensions 60, 62, along a circular arc or open ring up to the other of the transverse extensions 60, 62.

The pumping element 22, in particular the main body 76, includes 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 element 18, has a maximum transverse extent that corresponds to at least , essentially, in particular, completely the maximum transverse extent of the opposite surface 74 of the pumping chamber element 20 (see Fig. 4 and 8). For pumping fluid into and/or through the pumping chamber 18, the pumping surface 78 can be placed, in particular, completely placed against the opposite surface 74 of the pumping chamber element 20 as a result of the action of a driving force that can be generated by the drive unit 16. The opposite surface 74 of the pumping chamber element 20, when viewed in cross section 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 arcuate sections forms a recess and is placed on the inside, 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 connecting region, in particular at least one connecting groove, preferably a sealing groove 88, placed in particular on the inner surface of the pumping chamber element 20, and with this groove, at least at least one edge region 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, in particular, engages with the seal in the state of being placed on the pumping chamber element 20 (see Fig. 4 and 8). The pumping element 22 includes at least a sealing extension 90 which is integrally formed with the main body 76 of the pumping element 22, and in the state that the pumping element 22 is placed on the pumping chamber element 20, is placed at least partially in the sealing groove 88 of the pumping chamber element 20. The sealing groove 88 is formed in such a way that a flat contact zone is created between the sealing extension 90 and the edge region 92 of the pumping chamber element 20, which defines the sealing groove 88. The sealing groove 88 and the edge region 92 of the pumping chamber element 20 , limiting the sealing groove 88, and this edge region 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 formed in such a way that a flat contact zone of the sealing extension 90 is created on the edge region 92 of the pumping chamber element 20, defining the sealing groove 88, and on the base 94 of the groove for the sealing groove 88. The sealing groove 88 extends completely around the opposite surface 74 of the pumping chamber element 20, and this opposite surface interacts with the pumping surface 78 of the main body 76 of the pumping element 22 to pump the fluid, and defines the opposite surface 74. Preferably, the sealing groove 88 on the transverse extensions 60, 62 of the pumping chamber element 20 extends around the inlet or outlet in the respective transverse extension 60, 62 and passes, in particular, seamlessly into the annular inner surface of the pumping chamber element 20, in particular, in order to define the opposite surface 74. Preferably, the sealing groove 88 extends along the entire inner peripheral region of the pumping chamber element 20. For the purpose of interacting with the pumping surface 78 of the main body 76 of the pumping chamber element 22 for pumping fluid, the pumping chamber element 20 has an opposite surface 74, which, in particular, when viewed in cross section, extends over at least three successive circular arcuate sections, while at least the edge region 92 of the pumping chamber element 20, limiting the sealing groove 88, is placed in particular immediately adjacent to at least one of the three arcuate sections, in particular the outer 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. Preferably, the seal extension 90 extends along the entire outer periphery of the main body 76. Preferably, the seal extension 90 extends around the inlet and/or outlet extensions of the main body 76 and merges, in particular, seamlessly into the annular main body shape of the main body 76, in particular in order to delimit the pumping surface 78. a cross section that is different from the cross section of the additional transition region of the sealing extension 90 into the pumping surface 78 of the main body 76 (see FIG. 8).

In addition, the pumping 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, this pressing element being provided for the application of a contact pressing force on the sealing extension 90 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 (see Fig. 4, 5 and 9). The sealing extension 90 extends along a direction transverse to, in particular at least substantially perpendicular to, the pumping surface 78 of the main body 76 of the pumping element 22 over the pumping surface 78. The pressure block 96, in particular, at least in the non-pumping state of the pumping element 22 is provided to generate a non-uniform contact 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. Preferably, the sealing region 102 is formed by the interaction of the sealing groove 88 and the sealing extension 90. Preferably, the sealing region 102 is formed by the contact surface between the sealing extension 90 and the sealing groove 88. The pressing block 96 is preferably provided with the ability to form a non-uniform contact pressing force distribution along the sealing line of the pumping element 22, in particular along the circumferential direction of the pumping element 22. The sealing line is preferably formed by the sealing extension 90.

Preferably, the pressure block 96 is designed in such a way that, in particular, at least in the non-pumping state of the pumping element 22, the pumping element 22 has non-uniform compression along the maximum full extent of the sealing region 102 or sealing line, in particular along the maximum peripheral extent 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 annular in shape and is pressed against the inner periphery of the annular pumping chamber element 20 by means of a pressing element 98, 100. Preferably, the pressing block 96 comprises at least two pressing elements 98, 100, in particular two clamping rings, between which the pumping element 22 is placed in the pumping chamber element 20. Preferably, the pumping element 22 can be pressed against the inner periphery of the annular pumping chamber element 20 by means of the pressing elements 98, 100. , a clamping element 98, 100, in particular at least a clamping ring, wherein the pumping chamber element 22 includes at least a sealing extension 90, while the clamping element 98, 100 presses the sealing extension 90, in particular , at least along the circumferential direction of the pumping chamber element 20, to the pumping chamber element 20, in particular by means of a contact pressing force which is non-uniform along the circumferential direction. The pressing block 96 includes at least a pressing element 98, 100, in particular at least a pressing ring, which has a pressing surface 104 which, along the maximum longitudinal extent of the pressing surface 104, in particular along the circumferential direction of the pressing element 98, 100 has a varying height, in particular a varying distance relative to a surface facing away from the pressing surface 104, in particular the inner surface of the pressing element 98, 100. The varying height of the pressing surface 104 is preferably formed by different maximum heights of the pressing surface 104 along the peripheral direction. By way of example, three different positions 106, 108, 110 on the pressing member 98, in which the pressing surface 104 is provided to form different degrees of compression of the sealing extension 90, are indicated by dashed lines in FIG. 9. In particular, pressing surface 104 has different maximum heights at three different positions 106, 108, 110, which can be formed in a variety of ways, for example, by changing the maximum thickness of pressing element 98 at three positions 106, 108, 110 compared to others. positions of the pressing element 98, by changing the geometric profile of the pressing surface 104 on the side of the pressing element 98 facing the pumping element 22, or in any other way that is considered appropriate by those skilled in the art. For example, as a result of varying height, sealing extension 90 is compressed to varying degrees at positions 106, 108, 110. At position 106, for example, sealing extension 90 is compressed, in particular by more than 10%, preferably by more than 15%, preferably more than 20%, and most preferably more than 22% of the maximum thickness 68 of the seal extension 90. 15%, and most preferably more than 19% of the maximum thickness 68 of the sealing extension 90. At position 110, for example, the sealing extension 90 is compressed by more than 4%, preferably by more than 8%, preferably by 14%, and most preferably more than 16% of the maximum thickness 68 of sealing extension 90.

The clamping block 96 includes at least a clamping element 98, in particular at least a clamping ring and at least one additional clamping element 100, in particular at least one additional clamping ring, wherein the pumping element 22 is annular in shape and is pressed against the inner periphery of the annular pumping chamber element 20 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 the sides of the pumping element 22 facing in direction from each other. Preferably, the pressure element 98 and the additional pressure element 100 of the pressure block 96 have at least substantially the same configuration. The pressing element 98 and the additional pressing element 100 are placed mirror-symmetrically on the pumping chamber element 20, in particular 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 includes, at least a groove, preferably a sealing groove 88, extending in particular along the inner periphery of the annular pumping chamber element 20, against which at least the sealing extension 90, in particular the annular pumping element 22, is pressed by means of the pressing element 98, in particular , the clamping ring and/or the additional pressure element 100 of the pressure block 96, wherein the compression of the sealing extension 90 is non-uniform along the maximum longitudinal extent of the sealing extension 90 extending in particular along the circumferential direction of the pumping element 22. In addition to or in addition to the varying height of the pressing surface 104 of the pressing element 98 and/or additional pressing element 100, it is possible that the pumping element 22 includes at least a sealing extension 90 which is pressed against the inner periphery of the annular pumping chamber element 20 by means of the pressing block 96 and has a maximum thickness 68 that varies along the maximum longitudinal extent of the sealing extension 90, in particular along the circumferential direction of the pumping element 22. Additional configurations of the pressure block 96 to form a non-uniform compression of the sealing extension 90 along the circumferential direction in the sealing region 102, which are considered useful by those skilled in the art in the art are also possible.

Claims (10)

1. A pump for at least pumping a fluid, comprising at least one pumping device that has at least one pumping chamber (18), at least one dimensionally stable pumping chamber element (20), which is at least partially limits the pumping chamber (18), and at least one resiliently deformable pumping element (22), which together with the pumping chamber element (20) limits the pumping chamber (18) and is placed on the pumping chamber element (20); at least one drive unit (16) for acting on the pumping device; and at least one casing (14) for receiving a pumping device, characterized in that the casing (14) is formed separately from the pumping device as a whole so that the pumping device can be removed as a whole from the casing (14), and the pumping chamber the element (20) has an outer surface, which, in the state when the pumping device is placed on the casing (14), is connected with force and/or positive locking to the inner surface of the casing (14), in particular, rests on the inner surface of the casing (14), when in this case, the pumping chamber element (20), at least for a long distance, surrounds the pumping element (22) along a peripheral direction passing in a plane passing at least essentially perpendicular to the drive axis (70) of the drive unit (16). 2. The pump according to claim. 1, characterized in that the casing (14), at least over a large extent, surrounds the pumping chamber element (20), in particular the pumping device, along a peripheral direction passing in a plane passing at least along essentially perpendicular to the drive axis (70) of the drive unit (16). 3. The pump according to claim 1 or 2, characterized in that the pumping chamber element (20), when viewed along the direction passing transversely to the drive axis (70) of the drive unit (16), is located at least between the casing (14) and the pumping element (22) of the pumping device, in particular directly next to the casing (14) and the pumping element (22), or directly supported by the casing (14) and the pumping element (22). 4. A pumping device for a pump according to any one of the preceding claims, characterized in that the pumping chamber element (20) surrounds the pumping element (22) for at least a large extent along a circumferential direction, in particular extending in a plane extending at least at least substantially perpendicular to the drive axis (70) of the drive unit (16), wherein the pumping chamber element (20) is formed, at least over a large extent, in particular entirely, from a plastic material, in particular from an injection molded plastic material. 5. A pumping device according to claim 4, characterized in that the pumping chamber element (20) is annular in shape. 6. The pumping device according to claim 4 or 5, characterized in that the pumping chamber element (20) has an opposite surface (74), which interacts with the pumping surface (78) of the pumping element (22) for pumping fluid and which faces the pumping element (22) and has at least one elevation (84, 86) directed in the direction of the pumping element (22). 7. Pumping device according to claim. 6, characterized in that the elevation (84, 86), when viewed along the peripheral direction, runs along at least essentially the entire inner surface of the pumping chamber element (20), and this inner surface extends, in in particular, in the form of a circular arc. 8. Pumping device according to any one of paragraphs. 4-7, characterized in that the pumping chamber element (20) has at least one connecting area located, in particular, on the inner surface of the pumping chamber element (20), in particular at least one connecting groove, preferably a sealing groove ( 88) with which at least one edge region of the pumping element (22), in particular an extension, preferably a sealing extension (90), of the pumping element (22) located on the edge of the pumping element engages, in particular engages with the seal, in the state placement on the pumping chamber element (20). 9. Pumping device according to any one of paragraphs. 4-8, characterized in that the pumping chamber element (20) contains at least one connecting part (38) for an adapter (28) for supplying fluid and at least one additional connecting part (40) for an adapter (30) for outlet of the fluid, which are placed on the side of the pumping chamber element (20), facing in the direction from the pumping element (22), in particular on the outer surface. 10. Pumping device according to any one of paragraphs. 4-9, characterized in that the pumping element (22) is formed, at least over a large extent, in particular completely, from rubber, in particular from synthetic rubber.

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