PUMP DEVICE FOR DELIVERY OF AT LEAST ONE DELIVERY MEANS

Abstract

A pump device for delivery of at least one delivery means, particularly at least one fluid, with at least one drive unit and with at least one delivery device, particularly a delivery membrane comprising at least one, particularly at least substantially annular base body which is elastically deformable and comprises at least one delivery surface arranged on a delivery side of the base body and comprising at least one activation element for connection to at least one drive element of the drive unit, which is arranged on an activation side of the base body, the activation element being designed as a positive or non-positive element that cooperates with the drive element at least for the transfer of a driving force acting in a direction facing away from the activation side, by means of a positive and/or non-positive connection, particularly by means of a positive and/or non-positive connection without adhesive force.

Claims

1. A pump device for delivering at least one delivery medium, having at least one drive unit and having at least one delivery device wherein the at least one delivery device comprises at least one ring-shaped main body which is elastically deformable and which has at least one delivery surface arranged at a delivery side of the main body, and which delivery device comprises at least one activation element for a connection to at least one drive element of the drive unit, which at least one activation element is arranged at an activation side of the main body, wherein the activation element is designed as a positively locking and/or non-positively locking element which, at least for a transmission of a drive force acting in a direction pointing away from the activation side, interacts by means of a positively locking and/or non-positively locking connection with the drive element, wherein the direction pointing away from the activation side runs at least perpendicularly with respect to a movement axis of the drive element of the drive unit, wherein the activation element has a maximum longitudinal extent smaller than a maximum longitudinal extent of the main body, as viewed along a circumferential direction running around a drive axis of the drive unit.

2. The pump device according to claim 1, wherein the drive element interacts with play with the activation element.

3. The pump device according to claim 2, wherein the drive element at least partially engages with play around the activation element, or in that the drive element at least partially engages with play into a positive-locking recess, which is delimited by the activation element, of the activation element.

4. The pump device according to claim 1, wherein the activation element is formed as a projection which engages into a corresponding recess of the drive element or which at least partially delimits a positive-locking recess, into which the drive element at least partially engages, of the activation element.

5. The pump device according to claim 1, wherein the activation element is arranged on the main body in the region of a circular arc profile or of a ring profile of the main body.

6. The pump device according to claim 1, wherein the activation element is arranged in a connection region of the activation side of the main body, which connection region is arranged between at least two activation regions, which are domed in the direction of the drive element, of the activation side.

7. The pump according to claim 1, wherein the activation side, as viewed in a cross section of the delivery device running in a plane extending parallel to the drive axis of the drive unit, has a surface profile which differs from a rectilinear profile and which at least substantially corresponds to a surface profile of the delivery surface in a delivery-free state of the delivery surface.

8. The pump device according to claim 1, wherein the activation side, as viewed in a cross section of the delivery device running in a plane extending parallel to the drive axis of the drive unit, has, other than in a connection region of the activation side at which the activation element is arranged on the activation side, a domed surface which runs parallel to the delivery surface at least in a delivery-free state of the delivery surface.

9. The pump device according to claim 1, wherein the drive element has a drive surface which faces toward the main body and which, as viewed in a cross section of the drive element running in a plane extending parallel to the drive axis of the drive unit, has a surface profile which differs from a rectilinear profile and which, at least in certain regions, at least substantially corresponds to a surface profile of the delivery surface in a delivery-free state of the delivery surface.

10. A delivery device for a pump device, having at least one ring-shaped main body which is elastically deformable and which has at least one delivery surface arranged at a delivery side of the main body, and having at least one activation element which is provided for a connection to at least one drive element of the pump device and which is arranged at an activation side of the main body, wherein the activation element is designed as a positively locking and/or non-positively locking element which, at least for a transmission of a drive force acting in a direction pointing away from the delivery side, is connectable by means of a positively locking and/or non-positively locking connection to the drive element, wherein the direction pointing away from the activation side runs at least perpendicularly with respect to a movement axis of the drive element of the drive unit, wherein the activation element has a maximum longitudinal extent smaller than a maximum longitudinal extent of the main body, as viewed along a circumferential direction running around a drive axis of the drive unit, wherein the activation element is arranged on an inner side of the main body in the region of a circular arc profile or of a ring profile of the main body.

Description

DRAWINGS

[0026] Further advantages will emerge from the following description of the drawings. The drawings illustrate an exemplary embodiment of the invention. The drawings, the description and the claims contain numerous features in combination. A person skilled in the art will expediently also consider the features individually and combine them to form further meaningful combinations.

[0027] In the drawings:

[0028] FIG. 1 shows a pump device according to the invention having at least one delivery device according to the invention in a schematic illustration,

[0029] FIG. 2 shows a sectional view of the pump device according to the invention and of the delivery device according to the invention, wherein, in a left-hand half of the sectional view, the delivery device has been lifted off from a counterpart surface and, in a right-hand half of the sectional view, the delivery device has been pressed against the counterpart surface in the region of an inlet and/or outlet, in a schematic illustration,

[0030] FIG. 3 shows a detailed view of the delivery device according to the invention in a state in which it has been dismounted from the pump device according to the invention, in a schematic illustration,

[0031] FIG. 4 shows a sectional view of the delivery device according to the invention in a schematic illustration, and

[0032] FIG. 5 shows a further sectional view of the delivery device according to the invention in a schematic illustration.

DESCRIPTION OF THE EXEMPLARY EMBODIMENT

[0033] FIG. 1 shows a pump device 10 for delivering at least one delivery medium, in particular at least one fluid. The pump device 10 comprises at least one drive unit 12 and at least one delivery device 14, in particular a delivery diaphragm. The pump device 10 has at least one casing 42. The casing 42 may have any form that appears expedient to a person skilled in the art. In particular, the casing 42 is, in a manner known to a person skilled in the art, provided for at least partially encasing and/or supporting components of the pump device 10, in particular at least the delivery device 14 and/or the drive unit 12.

[0034] For open-loop and/or closed-loop control of the drive unit 12, the pump device 10 preferably comprises at least one open-loop and/or closed-loop control unit (not illustrated in any more detail here) which has a configuration already known to a person skilled in the art. The drive unit 12 preferably comprises at least one electric motor unit 44. It is however also conceivable for the drive unit 12 to have some other motor unit that appears expedient to a person skilled in the art, such as for example a combustion motor unit, a hybrid motor unit or the like. A drive element 24 of the drive element 12 for acting on the delivery device 14 may be connected directly, in particular rotationally conjointly, or indirectly, for example via a transmission unit of the pump device 10 or by means of at least one toothed gear element of the pump device 10, to a rotor shaft 48 of the electric motor unit 44. The rotor shaft 48 has an axis of rotation 50 which runs at least substantially parallel, in particular coaxially, with respect to the drive axis 32 of the drive unit 12. Other designs and/or arrangements of the connection between the drive element 24 and the electric motor unit 44 are likewise conceivable, for example a connection by means of an angle transmission unit, by means of a switchable coupling or the like. The pump device 10 furthermore comprises at least one delivery medium storage unit (not illustrated in any more detail here) for storing a delivery medium for delivery, wherein the delivery medium storage unit is connected at least to a delivery line 46 of the pump device 10 for delivery of the delivery medium by means of a delivery space of the pump device 10.

[0035] The delivery device 14 comprises at least one, in particular at least substantially ring-shaped, main body 16 (see FIGS. 3 to 5) which is elastically deformable and has at least one delivery surface 18 arranged at a delivery side 20 of the main body 16, and at least one activation element 22 for a connection to the at least one drive element 24 of the drive unit 12, which at least one activation element is arranged at an activation side 26 of the main body 16. The delivery side 20 of the main body 16 is preferably arranged on a side of the main body 16 which faces away from the activation side 26 of the main body 16. In particular, the delivery side 20 forms an outer side of the main body 16, in particular as the in a state of the delivery device 14 in which the latter has been dismounted or removed from the pump device 10. The activation side 26 preferably forms an inner side of the main body 16, in particular as viewed in a state of the delivery device 14 in which the latter has been dismounted or removed from the pump device 10. The activation side 26 in particular at least partially forms an inner surface of the main body 16. The activation element 22 is in particular formed integrally with the main body 16. It is however also conceivable for the activation element 22 to be formed separately from the main body 16 and to be fixed to the main body 16 by means of a positively locking and/or non-positively locking connection that appears expedient to a person skilled in the art.

[0036] The activation element 22 is formed as a positively locking and/or non-positively locking element which, at least for a transmission of a drive force acting in a direction pointing away from the activation side 26, interacts by means of a positively locking and/or non-positively locking connection, in particular by means of a cohesion-free positively locking and/or non-positively locking connection, with the drive element 24. The drive element 24 preferably interacts with play with the activation element 22. The drive element 24 at least partially engages with play around the activation element 22 (see FIG. 2). The activation element 22 is formed as a projection which engages into a corresponding recess 30, in particular into a corresponding positive-locking recess, of the drive element 24 (see FIG. 2). Alternatively or additionally, it is also conceivable for the drive element 24 to at least partially engage with play into a positive-locking recess 28 (illustrated by dashed lines in FIG. 5), which is delimited by the activation element 22, of the activation element 22. In an alternative or additional design, it is conceivable for the activation element 22 to be formed as a projection which at least partially delimits the positive-locking recess 28, into which the drive element 24 at least partially engages, of the activation element 22. In an alternative or additional design, it is conceivable for the drive element 24 to comprise a projection, such as for example a hook, a spherical projection or the like, which is provided for engaging into the positive-locking recess 28 (not illustrated in any more detail here).

[0037] The activation element 22 has a maximum longitudinal extent which is smaller than a maximum longitudinal extent of the main body 16, in particular as viewed along a circumferential direction 34 running around the drive axis 34 of the drive unit 12.

[0038] The main body 16 of the delivery device 14 preferably has a ring-shaped design. The main body 16 preferably has a slotted ring-shaped design. In particular, as viewed in a plane, in particular in a plane running at least substantially perpendicular to the drive axis 32, the main body 16 has a cross-sectional shape which is substantially made up of a circular arc or an open ring and two inlet and/or outlet projections which run transversely with respect to the circular arc or with respect to the open ring. The circular arc or the open ring of the cross-sectional shape of the main body 16 preferably extends along an angle range of less than 360 and in particular of more than 90. The inlet and/or outlet projections, which run transversely with respect to the circular arc or with respect to the open ring, of the cross-sectional shape of the main body 16 are preferably arranged directly on the circular arc or the open ring, in particular in end regions of the circular arc or of the open ring. The activation element 22 is preferably arranged on the main body 16, in particular on an inner side of the main body 16, in the region of a circular arc profile or of a ring profile of the main body 16. A maximum longitudinal extent of the activation element 22 is in particular at least 5%, preferably 10% and very particularly preferably at least 20% smaller than a maximum longitudinal extent of the main body 16. The activation element 22 preferably extends at least substantially along an entire extent of the circular arc or of the open ring of the main body 16, in particular as far as end regions of the circular arc or of the open ring, at each of which there is arranged an inlet and/or outlet projection of the main body 16. The activation element 22 preferably extends along an angle range in particular of less than 360, preferably of less than 340 and particularly preferably of more than 180 at the activation side 26.

[0039] The activation element 22 is arranged in a connection region of the activation side 26 of the main body 16, which connection region is arranged between at least two activation regions 36, 38, which are domed in the direction of the drive element 24, of the activation side 26. The activation side 26, in particular as viewed in a cross section of the delivery device 14, in particular in a cross section of the delivery device 14 running in a plane extending at least substantially parallel to the drive axis 32 of the drive unit 12, has a surface profile which differs from a rectilinear profile and which at least substantially corresponds to, in particular is congruent with, a surface profile of the delivery surface 18 in a substantially delivery-free state of the delivery surface 18. The activation side 26, in particular as viewed in a cross section of the delivery device 14, in particular in a cross section of the delivery device 14 running in a plane extending at least substantially parallel to a drive axis 32 of the drive unit 12, has, other than in a connection region of the activation side 26 at which the activation element 22 is arranged on the activation side 26, a domed surface which runs at least substantially parallel to the delivery surface 18 at least in an at least substantially delivery-free state of the delivery surface 18. The drive element 24 has a drive surface 40 which faces toward the main body 16 and which, in particular as viewed in a cross section of the drive element 24, in particular in a cross section of the drive element 24 running in a plane extending at least substantially parallel to a drive axis 32 of the drive unit 12, has a surface profile which differs from a rectilinear profile and which, at least in certain regions, at least substantially corresponds to, in particular is congruent with, a surface profile of the delivery surface 18 in an at least substantially delivery-free state of the delivery surface 18.

[0040] The delivery device 14 comprises at least one inlet and/or outlet 54, 56 which is formed integrally with the main body 16 and which serves for a connection to at least the delivery line 46 of the pump device 10 which is arranged adjacent to the delivery surface 18 (see FIGS. 3 to 5). The inlet and/or outlet 54, 56 is preferably arranged on, or forms, one of the inlet and/or outlet projections of the main body 16. The delivery device 14 preferably comprises at least one inlet 54, which is formed integrally with the main body 16, and one outlet 56, which is formed integrally with the main body 16. The at least one outlet 56 formed integrally with the main body 16 preferably forms one inlet and/or outlet projection of the inlet and/or outlet projections of the main body 16, or is arranged integrally on one of the inlet and/or outlet projections of the main body 16. The at least one inlet 54 formed integrally with the main body 16 preferably forms a further inlet and/or outlet projection of the inlet and/or outlet projections of the main body 16, or is arranged integrally on one of the inlet and/or outlet projections of the main body 16.

[0041] The at least one inlet and/or outlet 54, 56 is formed in particular as a connection interface which is provided for a positively locking and/or non-positively locking connection to at least one partial region of the delivery line 46 of the pump device 10, in particular for receiving, in positively locking and/or non-positively locking fashion, at least one coupling element (not illustrated in any more detail here), such as for example a hose connector or the like, of the delivery line 46 of the pump device 10. The coupling element is preferably designed such that it can be pushed or plugged into the inlet and/or outlet 54, 56. The at least one inlet and/or outlet 54, 56 is formed as a projection of tubular or hose-like form.

[0042] The at least one inlet and/or outlet 54, 56 is arranged on at least one fixing projection 58, 60 of the main body 16. The fixing projection 58, 60 is preferably formed integrally with the inlet and/or outlet projection of the main body 16. The fixing projection 58, 60 extends, proceeding from the circular arc or the open ring of the main body 16, transversely with respect to the outer side with respect to the delivery surface 18 of the main body 16. By means of the fixing projection 58, 60, the main body 16, in particular the delivery diaphragm, can be fixed, in particular clamped, on the casing 42 of the pump device 10. The delivery device 14 comprises at least one securing element 62, 64 which is arranged on the at least one inlet and/or outlet 54, 56 and which is provided for securing the at least one inlet and/or outlet 54, 56 on the casing 42 of the pump device 10 in positively locking and/or non-positively locking fashion. The securing element 62, 64 is preferably formed as a securing collar. It is however also conceivable for the securing element 62, 64 to have some other form that appears expedient to a person skilled in the art. The securing element 62, 64 is formed integrally with the at least one inlet and/or outlet 54, 56, in particular formed as a vulcanized projection or collar integrally with the at least one inlet and/or outlet 54, 56. A securing element 62 is preferably arranged at the inlet 54, in particular formed integrally with the inlet 54. A securing element 64 is preferably arranged at the outlet 56, in particular formed integrally with the outlet 56.

[0043] The delivery surface 18 of the main body 16 tapers, preferably at least in a region adjacent to the at least one inlet and/or outlet 54, 56, in the direction of the inlet and/or outlet 54, 56 (see FIG. 3). The delivery surface 18 has, in particular in a vicinity of the inlet and/or outlet 54, 56, a spacing, which decreases in the direction of the inlet and/or outlet 54, 56, of two boundary lines that delimit the delivery surface 18 of the main body 16. The delivery space runs in funnel-shaped fashion in a vicinity of the inlet and/or outlet 54, 56. The delivery space preferably transitions in funnel-shaped form into the inlet and/or outlet 54, 56.

[0044] The pump device 10 comprises in particular at least the delivery device 14, which is formed as a delivery diaphragm, at least the drive unit 12 for acting on the delivery diaphragm, and at least the casing 42, which has at least one clamping interface 66 for receiving the at least one inlet and/or outlet 54, 56, formed integrally with the main body 16, of the delivery device 14, in particular of the delivery diaphragm. The at least one clamping interface 66 comprises at least one positive-locking element 52, in particular a securing recess, which is connected in positively locking and/or non-positively locking fashion at least to the securing element 62, 64, arranged at the at least one inlet and/or outlet 54, 56, of the delivery device 14, in particular of the delivery diaphragm. The positive-locking element 52 is preferably formed as a groove in the casing 42 of the pump device 10, which groove interacts with the securing element 62, 64 arranged at the at least one inlet and/or outlet 54, 56. It is however also conceivable for the securing element 62, 64 to be formed as a groove and for the positive-locking element 52 of the clamping interface 66 to be formed as a projection or web that engages into the securing element 62, 64 formed as a groove.

REFERENCE DESIGNATIONS

[0045] 10 Pump device

[0046] 12 Drive unit

[0047] 14 Delivery device

[0048] 16 Main body

[0049] 18 Delivery surface

[0050] 20 Delivery side

[0051] 22 Activation element

[0052] 24 Drive element

[0053] 26 Activation side

[0054] 28 Positive-locking recess

[0055] 30 Recess

[0056] 32 Drive axis

[0057] 34 Circumferential direction

[0058] 36 Activation region

[0059] 38 Activation region

[0060] 40 Drive surface

[0061] 42 Casing

[0062] 44 Electric motor unit

[0063] 46 Delivery line

[0064] 48 Rotor shaft

[0065] 50 Axis of rotation

[0066] 52 Positive-locking element

[0067] 54 Inlet and/or outlet

[0068] 56 Inlet and/or outlet

[0069] 58 Fixing projection

[0070] 60 Fixing projection

[0071] 62 Securing element

[0072] 64 Securing element

[0073] 66 Clamping interface