EP1317626B1 - Method and device for conveying media - Google Patents

Abstract

Disclosed is a method and a machine (displacement machine or similar) used to convey transportable media (gaseous, liquid, pasty or trickling). The drive produces a migrating wave.

Description

State of the art

The invention relates to a method or a machine (displacement engine odgl.) For the promotion of recoverable media (gaseous, liquid, pasty or trickle-like) according to the preamble of the main claim or the secondary claim 2. conveyors with an elastically deformable wall part of the working space usually known as a diaphragm pump, for example with Pendelpleuelantrieb (DE 637 586C or DE-OS 2212322 or DE-OS 19919908 and DE-PS 2211096) or with swash plate drive (DE-OS 4244619) or the like. also as a peristaltic pump, wherein at least the drive of the working space in sections limiting elastically deformable wall parts (membrane, hose wall or the like.) By transversely to the flow direction of the medium to be displaced on these wall parts acting forces. According to the function of a working machine, this drive is supplied with energy and transferred accordingly to the medium, whereby it is always an intermittent, that is not a linear promotion. In accordance with the function of these known displacement working machines, for example, a standing wave with fixed points of intersection on the imaginary axis arises in the case of a pendulum pump, as a result of which a substantial vibration compensation of the antinode and oscillation valley is achieved. Even with diaphragm pumps driven by slides (see above US Pat. No. 4,854,836), in which a plurality of slides arranged behind one another produce a delivery shaft in the medium to be delivered (in the case of a peristaltic pump), these are standing waves. Thus, in hose pumps or the like. Pumping, as in a rolling movement of a tire, the hose pressed together to then radially expand again to produce the suction movement. It is either either a uniform reciprocating, a standing wave generating drive or a continued wave-like motion.

The disadvantage of this known drive method is, above all, a relatively high degree of wear, since the lateral limitation of the shaft is always in the same place, i. also always in the same places a maximum load takes place, apart from the fact that in each case dead points are generated, which requires an analogous to the drive frequency alternating load of the driving forces in slow-moving machines, for example, for tough medium to be conveyed. If necessary, additional facilities must be provided for overcoming these dead centers.

In another known method for conveying in particular pasty or trickle-like media, for example, via a screw, the medium in an upwardly open space, For example, a groove, transported, with the disadvantage that due to the friction between the screw and medium or gutter considerable losses.

Membrane pumps are also known in which the drive is effected via piezoelectric elements (DE-OS 198934536 and DE-OS 3618106) with basically the same disadvantages and, in particular, also suitable only for small delivery rates.

Last but not least, methods for propulsion of ships are known (DE-GM 7712359), in which the medium, in this case water, are transported in a direction of travel of the ship extending space with a front entrance and a rear exit. Due to the thrust of the pumped water and the corresponding arrangement of input and output, which are largely below the water level, the ship is moved. Again, the drive losses of the water are relatively high.

The invention and its advantages

The inventive method with the characterizing features of the main claim and the carrier of the invention and the characterizing features of the independent claim 2 has the advantage that in the promotion of the medium due to the drive resulting intersections resulting from the nature of the drive waves in the flow direction wander the medium, ie do not remain in one place or mitwandern the intersections with a fictitious flow axis with the medium in the flow direction.

Such traveling waves are known in nature in the movement of snakes, eels and the like. Accordingly, the wear is distributed in such a machine much more uniformly on the driving and driven parts and there is also a much more uniform promotion of the medium. Due to an additional, superimposed on the basic movement, differently directed movement, a pulsation is achieved by the drive system, which according to the invention is designed such that it generates the traveling wave in the medium. As a result, a friction between the movable wall parts and the rigid wall is avoided or an output avoided, which u.a leads to less wear in the machine according to the invention and also to a lower noise and the possibility of using rigid materials flexible wall. Since the materials in particular of the elastically deformable wall parts are less stressed, as in known machines, these materials may be both different and thinner, but it may also be novel materials are used, which would not meet the demands of the known machines. Such materials which can be used now include, inter alia, and among other things fiber-reinforced plastics which can be rendered gas-tight by incorporation of thin metal layers, so that the displacement working machine according to the invention could also be supplied to new fields of application, for example in the refrigeration and air conditioning sector. Thus, according to the invention, the return of the elastically deformable wall parts can be carried out automatically in the pressure and / or suction direction - in contrast to known generic displacement working machines.

According to an advantageous embodiment of the carrier according to the invention is with the elastically deformable wall parts in Cooperation with the opposite them, the working space delimiting wall parts, which are usually rigid, a transverse to the flow direction seal achieved, similar to a single-walled peristaltic pump, in which the opposite walls are usually compressed in a cross-line. By such an interaction of mostly elastic and rigid wall parts, namely, depending on the remaining distance between the opposing wall parts, and the flow rate of the medium can be controlled up to the actual even a higher pressure permitting seal.

According to a related advantageous embodiment of the invention, a corresponding valve function is taken over by the interaction of the elastic deformable wall parts with the inlet and / or outlet opening of the working space. As soon as the elastic wall parts close off the inflow opening, the medium can also be conveyed under higher pressure to the outflow opening with appropriate drive of the wall parts and, conversely, when closing the outflow opening and enlarging the working space while simultaneously opening the inflow opening, an aspiration of the medium takes place.

The relevant embodiment of the invention, the given transversely to the flow direction sealing or this approach between elastic wall part and rigid wall part as migrating in the flow direction, whereby the migratory wave of the medium is influenced accordingly.

According to a basic embodiment of the invention, the elastically deformable wall portion of the working space is designed as a membrane, which is transverse to the flow direction for the corresponding desired drive can be acted upon. Preferably, such a membrane has an elongated, for example, oval extension, wherein the inflow opening is arranged at one of the longitudinal ends and the outflow opening at the other. Advantageously, a very favorable clamping and sealing by such a membrane can be achieved for the function of the machine, both in fast-running and slow-running machines. Due to the type of clamping, a natural reset effect can be achieved for certain designs, depending on the design.

According to a specific embodiment of the invention, the drive consists of a crank mechanism and a lifting movement on the elastic wall parts transmitting connecting rod, being guided to generate the traveling wave of the connecting rod in its pendulum stroke in the stroke direction along a predetermined path, so that the connecting rod except that by the crank mechanism related pendulum movement additionally transversely to the flow direction moving force (tilting movement) learns. This tilting movement, generated by the pendulum motion and superimposed by the cam track guide, can be a cam track guide in the section of the connecting rod between crank drive and elastic wall part, but it can also be arranged on the side of the crank drive facing away from the elastic wall part. All that is decisive is that the pendulum motion caused by the crank mechanism is superimposed on a quasi disturbing variable, which makes a traveling wave out of the standing wave given by a pendulum motion.

According to a related advantageous embodiment of the invention is used to transmit the traveling wave generating Pendelkippbewegung on the elastic wall parts a laterally compliant form-fitting support serves. As a result, a corresponding degree of freedom is achieved between the output end of the connecting rod and the point of attack of the elastic wall parts in the transverse direction.

According to a related embodiment of the invention serves as a form-fitting support a sliding block, which is arranged between the connecting rod end and elastically deformable wall part.

According to a related advantageous embodiment of the invention, the form-fitting support on a rectangular bar-like extension, wherein the tilting movement of the form-fitting support is transmitted directly to the movable wall part. As a result, this pendulum tilting movement is transmitted directly to the medium to be conveyed, which on the one hand causes a pulsating effect, on the other hand, the migratory wave.

According to an additional advantageous embodiment of the invention, an elastically yielding rigid plate is arranged between the connecting rod and elastic wall parts, via which the pendulum tilting movement performed during the stroke is transferred over a large area to the elastic wall parts. In this case, this plate may interact in a floating manner with the elastic wall parts, or be connected to these and be stored according to floating towards the end of the connecting rod. It is crucial that this plate can exert a corresponding support effect on the elastic wall parts, so that it may consist of other reasons for the sake of a soft membrane.

According to a related advantageous embodiment of the invention, the plate consists of resilient material, such as steel or harder plastic.

According to the invention mentioned in the claims 9 to 12 features can also be transferred to other drive means, at least whenever a drive is transverse to the elastic wall or membrane and similar problems exist.

According to an additional advantageous embodiment of the invention, the pulsating work is achieved by means of several transverse to the flow direction and successively arranged and controlled on the elastically deformable wall parts acting drive elements (see above US 4854836 or US 5961298).

According to a related advantageous embodiment of the invention, as well as in the above-described embodiments, the elastically deformable wall parts formed as a membrane having a drive corresponding to a plurality of elements longitudinal extent. This membrane may be oval or almost rectangular, which essentially depends on which additional functions, such as valve functions, the membrane has to take over or how many drive elements are provided in succession and the like. More.
According to an additional advantageous embodiment of the invention serves as a drive camshaft associated with the cam slide links, which act at least indirectly (see also claim 9 to 12) on the membrane to the drive. This may also be crank-operated connecting rod or acting on the elastic wall parts cross slides, vibrating anchors or the like. Thus, it is also conceivable that the drive is a kind of screw conveyor, whose axis of rotation runs in the flow direction and their effective external edge drive helically engages the membrane. According to the radius of the screw conveyor, the membrane of the opposite fixed boundary wall of the working space is then concave toward the room, with at the beginning and end of this tunnel-shaped working space existing inflow and outflow openings.

Thus, according to an additional advantageous embodiment of the invention, the machine housing is tubular, wherein the tube wall serves as a rigid wall part.

After an additional embodiment of the invention in a special case, two diaphragms are arranged parallel to one another in the machine housing, wherein the drive is arranged double-acting between the diaphragms. In this way, a drive similar to a boxer can take place, with a particular advantage is that the promotion effected in each case by a drive takes place offset to the other, whereby, apart from the increased delivery rate, a more uniform promotion is achieved.
After an advantageous general but also related embodiment of the invention, the tubular housing has a circular working space cross-section. In contrast to the likewise possible flattened housing in which the membrane repeatedly comes into contact with the fixed Wan.d, whereby a certain valve effect is generated, such, having a circular housing having machine, can be optimized as a turbomachine, in the there is no contact between the membrane and the opposite stationary wall.

According to an additional advantageous embodiment of the invention, the drive is effected by at least indirectly transmitted magnetic forces. Especially with smaller pumps in the medical or micropump sector, this type of drive can be advantageous.

According to a related advantageous embodiment of the invention, the magnetic forces or piezoelectric forces are generated electrically and also controlled. In this way, for example, traveling electromagnetic fields can be generated and moved in a simple manner on magnetic coils as in a linear synchronous motor, thereby driving a membrane. Especially with micropumps with low pressure or with small compressors up to about five bar, this can also be done by linear or in curves migratory electromagnetic fields So close by own spring force wavy wandering again. The entire system can also be designed analogously to chips through individual layers, up to near hygroscopic limits. The drive can be carried out via magnetic coils in use similar to loudspeakers or also by oscillating armature with appropriate implementation of the movement.

A carrier of the type according to the invention, namely in which the drive acts pulsating on the medium, so that a traveling wave is generated in the medium, can not only be implemented by machine in many ways, but also the scope of this invention is correspondingly versatile. Thus, in pumps in the large and medium power range, the invention can be used as well as in the micro range, in which wavy pumping films can be used as elastic wall parts use. Especially in the medical microtechnology sector, the invention can be used, namely where an axle drive is no longer could be accommodated. Another area of application for compressors is also from large machines to micro-versions.

According to an additional advantageous, the application of the invention embodiment, it is used to drive ships or the like .. The "traveling wave" according to the invention is a schlingelnde Fortbewegungsart as of fish and snakes or the pumping locomotion of jellyfish, the basic drive similar in a propeller by suction on the one hand and ejection on the other hand is effected. Here, the invention is used as a turbomachine. Just as it is conceivable to propel elephant seals on marshy or muddy ground, it is also conceivable to use them as quasi-amphibious vehicles in swamp areas, but possibly also on sand. The reverse application of the invention would be the bottom of a channel, in which the bulk material would be transported by the waving wavy drive of the soil - similar Rütteltransport on treadmills.
After an advantageous use of the invention relates to the ship propulsion is provided in a hull below the water level an inflow opening in the bow and corresponding output opening in the rear and an intermediate drive space, the drive of the deck facing membrane can be done in different ways. Thus, two such drive systems can be arranged side by side, so as to maneuver the ship depending on the different flow rate or it can be a pipe pump with pas- sage order as outboard boat drive ..

According to a fundamentally advantageous embodiment of the invention, the elastically movable wall part is formed as a membrane and clamped in the edge region, wherein in cross-section of the membrane seen always a wavy contour remains, similar to the diaphragm of speakers. This will avoid that a jam arises when passing through the membrane of the clamping plane, since of course the cross section in the clamping region is smaller than in the extended region of the membrane, this clamping region must be detected by the same membrane as well as the extended region of the membrane in which they for example, rests against the fixed wall. The wavy contour allows, similar to the speaker, high frequencies without Walk disadvantage.

According to an additional advantageous embodiment of the invention hydraulically or pneumatically operable profiles are incorporated into the membrane surfaces, whereby the membrane itself is able to continue to move wavy.
According to an additional advantageous embodiment of the invention elongate-flat and / or fibrous piezoelectric elements are incorporated as flexible profiles in the membrane to deform them, for example, for an inventive drive the same. The deformation of surface parts by piezo elements is known in aircraft wings and helicopter rotors.

Further advantages and advantageous embodiments of the invention are the following description of the drawing and the claims removable.

drawing

Fig. 1

einen Querschnitt durch eine Pumpe gemäß der Linie I-I in Figur 2;

Fig. 2

einen Querschnitt gemäß der Linie 11-11 in Figur 1;;

Fig. 3

einen Teillängsschnitt gemäß der Linie III-III in Figur 2;

Fig . 4

sechs verschiedene Arbeitsstellungen in verkleinertem Maßstab;

Fig. 5

stark vereinfacht ein zweites Ausführungsbeispiel im Querund Längsschnitt und in verschiedenen Arbeitsstellungen

Fig. 6

eine Variante des zweiten Ausführungsbeispiels;

Fig. 7

eine optimierte Membrankontur und

Fig. 8

eine Anwendung als Schiffsantrieb.

Two embodiments of the subject matter of the invention are illustrated in the drawing and described in more detail below. Show it:

Fig. 1

a cross section through a pump according to the line II in Figure 2;

Fig. 2

a cross section along the line 11-11 in Figure 1;

Fig. 3

a partial longitudinal section along the line III-III in Figure 2;

Fig. 4

six different working positions on a smaller scale;

Fig. 5

greatly simplified a second embodiment in transverse and longitudinal section and in different working positions

Fig. 6

a variant of the second embodiment;

Fig. 7

an optimized membrane contour and

Fig. 8

an application as a ship propulsion.

Description of the embodiments

In the first embodiment shown in Figures 1 to 4, the invention will be explained with reference to a pump. In a pump housing 1, a crank mechanism 2 is arranged with an eccentric 4 arranged on a drive shaft 3 and a connecting rod 5 actuated by the latter. The connecting rod has in its upper region a cam 6 which is guided in a path 7 of the pump housing 1 that the connecting rod 5 executes a caused by the web 7 and the cam 6 tilting movement when caused by the crank mechanism lifting and pendulum action.

At the upper end of the connecting rod 5 acts on a sliding block 8, which transmits the Hubpendelkippbewegung a form fit support 9 on a resilient plate 10. The spring plate 10 follows in the region of the form-fitting support not only the stroke of the connecting rod, but also its Kipppendelbewegung. This movement is transmitted from the spring plate 10 to a diaphragm 11, which is clamped in its edge region by beads 12 between the housing 1 and a housing cover 13. Between the membrane 11 and the housing cover 13, the pump working chamber 14 is enclosed, which is supplied via an inflow opening 15 with a medium to be conveyed, which is then displaced via a discharge opening 16 from the pump working chamber 14. Sections 17 and 18 of the membrane 11, which are opposite to the mouths of the inflow opening 15 and the outflow opening 16, act with these mouths as a valve. As soon as the membrane 11 is moved downwards with these sections 17 or 18, this valve opens and, as soon as they assume the position shown in FIG. 1, these sections 17, 18 close the openings 15 or 16.

• In Arbeitsstellung 4.6 hat der Kurbeltrieb 2 die Membran 11 vollständig an den Gehäusedeckel 13 gedrückt, wodurch sowohl Zuströmöffnung 15 als Abströmöffnung 16 verschlossen sind.
• Bei 4.1 ist zu erkennen, dass trotz einer Rechtsdrehung gemäß Pfeil IV der Antriebswelle 3 die Formschlussplatte 9 nach links gekippt wird, wodurch von der Federplatte 10 übertragen die Membran 11 die Zuströmöffnung 15 zum Pumpenarbeitsraum 14. hin öffnet, so dass jenes zu fördernde Medium einströmen kann.
• Bei 4.2 erfolgt eine weitere Verdrehung der Antriebswelle 3 mit der Folge einer Vergrößerung des Pumpenarbeitsraums 14.
• Bei 4.3 hat der Pleuel 5 seinen Tiefstpunkt erreicht, wobei die Zuströmöffnung 15 des Pumpenarbeitsraumes 14 durch die Membran 14 wieder geschlossen ist, jedoch die Abströmöffnung 16 noch nicht geöffnet hat.
• Dies findet dann bei 4.4 statt, bei dem die Formschlussauflage 9 nach rechts gekippt ist, wodurch die Zuströmöffnung 15 gesperrt bleibt; aber die Abströmöffnung 16 geöffnet wird, so dass bei dem nunmehr verkleinerten Arbeitsraum 14 das Medium durch die Membran 11 verdrängt abströmen kann.
• Bei 4.5 ist gezeigt, dass sich bei Fortsetzung der Verdrehung der Pumpenarbeitsraum 14 weiter verkleinert, um dann endgültig die bei 4.6 gezeigte Stellung einzunehmen.

FIG. 4 shows the pumping action on the basis of six working positions:

• In working position 4.6, the crank mechanism 2 has pressed the membrane 11 completely against the housing cover 13, whereby both the inflow opening 15 and the outflow opening 16 are closed.
• At 4.1 it can be seen that, despite a clockwise rotation according to arrow IV of the drive shaft 3, the form-fitting plate 9 is tilted to the left, whereby transferred from the spring plate 10, the membrane 11 opens the inflow opening 15 to the pump working chamber 14, so that that medium to be conveyed flow can.
• At 4.2, a further rotation of the drive shaft 3, with the result of an increase in the pump working space 14th
• At 4.3, the connecting rod 5 has reached its lowest point, wherein the inflow opening 15 of the pump working chamber 14 is closed again by the membrane 14, but the discharge opening 16 has not yet opened.
• This then takes place at 4.4, in which the form-fitting support 9 is tilted to the right, whereby the inflow opening 15 remains locked; but the discharge opening 16 is opened, so that in the now reduced working space 14, the medium can flow through the membrane 11 displaced.
• At 4.5, it is shown that as the rotation continues, the pump working space 14 further decreases to finally assume the position shown at 4.6.

This cycle shown in Figure 4 is repeated at each revolution of the drive shaft 3, wherein due to the cam guide 6,7 of the connecting rod 5 this except its stroke movement performs a pendulum tilting movement with its upper end side, on the one hand exerts a pulsating effect on the medium to be pumped and the other causes a wandering wave in the pumped medium.

In the greatly simplified illustrated in Figure 5 second embodiment, two opposing conveyor membranes 19 are arranged in a nearly raw-shaped extending pump housing 20 and are characterized by a between the Conveying membranes 19 arranged camshaft 21 driven to generate a traveling wave. The promotion of the medium, which is indicated by arrows IV, takes place here in the longitudinal direction of the camshaft 21. The eccentric 22 of the camshaft 21 engage here in each case via a link 23, in whose central opening 24 of the eccentric 22 runs, and via a respective spring plate 25th on the conveyor membranes 19. The link 23 is guided here on tracks 26 of the housing 20. The traveling wave is not achieved here by this slotted guide, but rather to the assignment of the four cams in their successive effect on the membrane. The function is accordingly not linear. In any case, however, a quasi double-acting promotion is achieved by the use of two membranes, the two pumping rooms due to the development of the cam temporally slightly offset from each other promote.

In Figure 5, 5.1 to 5.6 various delivery phases are shown in the individual representations, which are described in more detail below. In each case, at 27 and 28 each have an inflow opening and at 29 and 30 each have a discharge opening. The pump work spaces are labeled 31 and 32.

In phase 5.1 or 5.2, the inflow opening 27 of the pump working chamber 31 is closed, while the inflow opening 28 of the pump working chamber 32 is largely open due to the displacement of the camshaft 21. On the other hand, the outflow opening 29 and the outflow opening 30 are open, so that the medium to be delivered can exit.
At phase 5.3, the camshaft is further rotated by 90 °, whereby the membrane 19 pushes out the medium to be pumped from the pump working chamber 31 through the discharge opening 29 and on the other hand sucks via the inflow opening 27. In the pump working chamber 32, however, is sucked in the middle area by enlarging the space still on the inflow opening 28, while the delivery process in the Abströmöffnung 30 is completed, since the diaphragm 19 abuts the pump housing 20 in this area.
In phase 5.4, 5.5, 4.4 corresponds to a section corresponding to the line VII-7, is located at this interface, the lower conveyor diaphragm 19 on the pump housing 20, so that the inflow opening 20 is quasi closed. In this phase, the camshaft 21 is further rotated by 90 °. The upper pump working space 31 has increased correspondingly on the left side, while it has conveyed on the right side via the discharge opening 29.
In phase 5.6, in which the camshaft 21 had in turn rotated by 90 °, the discharge opening 29 is closed and the inlet opening 27 is still open, so that the medium according to the arrow V can flow into the pump working chamber 31. By contrast, the pump working space 32 conveys the medium to the outflow opening 30, while medium flows into the space via the inflow opening 28.

Of course, such a conveyor can work with only one membrane with correspondingly limited capacity. Thus, it is also possible according to the invention to achieve a cascade-like promotion, in which instead of a camshaft electromechanical drive systems are used. Thus, a cascade of multiple electromechanical transducers may be excited by a frequency generator, with the generator having as many outputs as converters in the cascade. The outputs of the frequency generator are then out of phase with each other at a cascade of 4 by 90 °. Here, the cascade is operated in ascending order with also ascending phase. According to the invention, a propagating wave is generated with such an arrangement and the cascade of lifting systems supplied therewith by means of an elongated membrane connected thereto. Propagation speed, lift height and rise time are controlled by the frequency of the generator.

FIG. 6 shows a variant of this second exemplary embodiment, in which only the pump housing 33 has a circular cross section, although the drive with camshaft 21 and the diaphragms 19 are formed as in the exemplary embodiment illustrated in FIG. As a result, the membrane 19 no longer reaches the wall of the pump housing 33 during rotation of the camshaft, so that instead of a transfer with corresponding delivery interruptions continuous promotion takes place, as is typical in turbomachines.

FIG. 7 illustrates, with reference to functional lines, in which design of membranes or rigid wall parts interacting with the membrane results in a minimum of flexing losses. This makes it possible to firmly clamp the edge regions of the membrane immovably.

At 7.1 in Figure 7, the classic example of a working space is shown with a slightly upwardly corrugated inner wall 34 and a corresponding outwardly arched membrane 35, which together define the working space 36 and at its edge regions 37, in which the membrane is clamped, asymptotic approach. When provided by the arrow VIII working path of the membrane towards the solid wall 34 is a kind of compression of the membrane in its plane, which reaches its peak approximately on the line XII. The compression is related to the fact that the housing with the fixed wall 34 and the clamping points 37 are rigid, while the membrane 35 in its extended position requires a substantially larger clamping surface than in the position according to line IX.

In Figure 7.2 of Figure 7, the inventive design is shown, in which the solid wall 38 has a lip-shaped design, whereas, on the other hand, the membrane 39 assumes a slightly curved shape in its extended, that is the lower position. When pushed upwards, it passes through the center line X, whereby, as can be clearly seen, the wavy design no longer presents a forest problem.

At 7.3 of FIG. 7, a constructive example is shown with a pump housing 40 and the diaphragm 39 enclosing the pump working space 36.

In contrast, it is only shown at 7.4 that the membrane 41 can be firmly clamped in by means of beads 2, without, therefore, a higher flexing work being expected or a separate load being created at the clamping points of the membrane 41.

In Figure 8, an additional application of the invention is shown, namely as a drive means for a ship. Again, the presentation is greatly simplified. 43, the keel bottom of a ship is indicated, above which a through a membrane 44 limited drive space 45 is arranged. This drive space has an inflow opening 46 and an output opening 47. By operating the membrane in the manner described above ambient water of the vessel is sucked in via the inlet opening and repelled through the output opening after flowing through the drive space. Marine propulsion due to the displacement principle are of course known. Advantageous here is the seal effect, so that a propulsion would also be conceivable in morass or mud, possibly also on non-adhesive trickling sand. Such a ship would certainly be amphibious under certain conditions, which would be advantageous in marshy areas. The drive of the membrane 44 can of course be done in a variety of ways to wind turbines above the ship, which could drive the membrane via a corresponding transmission.

Just as the membrane can serve to propel a ship, according to the invention in reversal of the function of the membrane for conveying liquids, but also sludge, debris such as sand or the like, take place, the membrane can form the bottom of an open channel and driven accordingly is.

All in the description, the following claims and the drawings illustrated features may be essential to the invention both individually and in any combination.

LIST OF REFERENCE NUMBERS

1

pump housing

2

crankshaft

3

drive shaft

4

eccentric

5

pleuel

6

cam

7

train

8th

slide

9

Form-locking support

10

spring plate

11

rigid membrane

12

bead

13

housing cover

14

Pump working space

15th

inflow

16th

outflow

17th

Section of 11

18th

Section of 11

19th

conveyor diaphragm

20th

pump housing

21st

camshaft

22nd

eccentric

23rd

scenery

24th

Central opening

25th

spring plate

26th

train

27th

inflow

28th

inflow

29th

outflow

30th

outflow

31st

Pump working space

32nd

Pump working space

33rd

pump housing

34

Solid wall

35th

membrane

36th

working space

37th

border area

38th

Solid wall

39th

rigid membrane

40th

pump housing

41st

rigid membrane

42nd

Schamierwulst

43rd

Kiel ground

44th

membrane

45th

drive space

46th

inflow

47th

output opening

I

cut

II

cut

III

cut

IV

direction of rotation

V

flow direction

VI

cut

VII

cut

VIII

path

IX

line

X

intermediates

Claims (26)

1. Method for conveying conveyable, in particular gaseous, liquid, paste-like or freeflowing, media within a conveying chamber having at least one inlet and an outlet and by means of at least one resiliently compliant wall element (11, 19, 39, 41, 44), which is driven transversely or longitudinally to the conveyance direction of the medium, of the conveying chamber, characterised in that the drive is exerted as a pulsating wave motion, in that the resiliently compliant wall element (11, 19, 39, 41, 44) is resistant to bending, in that the force is introduced into the resiliently compliant wall element (l l, 19, 39, 41, 44) via articulated, discrete force introduction points, in that, owing to the bending-resistant configuration of the resilient wall element (11, 19, 39, 41, 44), the wave motion generated by deflection at the discrete force introduction points continues beyond the force introduction points, and in that, as a result, a migrating wave oriented in a defined direction is generated in the medium for the conveyance thereof.
2. Machine, in particular for carrying out the method according to claim 1, comprising a working chamber (14, 31, 32, 35, 45), through which media flow from an inflow opening to an outflow opening (15, 16, 25, 27 to 30, 46, 47), in the direction of flow of the medium to be conveyed, and having at least one elastically deformable wall element (11, 19, 39, 41, 44), and comprising at least one drive means (2 to 10, 21 to 26) acting on the elastically deformable wall element (11, 19, 39, 41, 44) for actuating the conveyance thereof at a force introduction point, characterised in that the drive means (1 to 10, 21 to 26) exerts a pulsating action on the deformable wall element (11, 19, 39, 41, 44) and therefore on the medium, so a "migrating wave" is generated in the medium from the inflow opening to the outflow opening (15, 16, 25, 27 to 30, 46, 47), in that the elastically deformable wall element is resistant to bending and in that the force is introduced by the drive means into the elastically deformable wall element via an articulated connection between the drive means and force introduction point, so the wave motion generated by deflection at the force introduction points continues beyond the force introduction points.
3. Machine according to claim 2, characterised in that the elastically deformable wall elements (10, 11, 19), in cooperation with the mostly rigid wall elements (13, 24) opposing said deformable wall elements and delimiting the working chamber (14, 26, 3 X, 32), allow a seal migrating transversely to the direction of flow (V) (when the wall elements approach one another) to be achieved.
4. Machine according to claim 3, characterised in that portions (17, 18) of the elastically deformable wall elements (11, 19) cooperate with the inflow and/or outflow opening (15, 16, 25) in the manner of a valve.
5. Machine according to either claim 3 or claim 4, characterised in that the seal, in particular the conveying collar, provided between the elastically deformable wall elements (11, 19) and the rigid wall elements (13, 20), by the drive means (2 to 10, 21 to 26) thereof, continues to migrate in the direction of flow (V) of the medium.
6. Machine according to any one of claims 2 to 5, characterised in that at least a portion of the elastically deformable wall elements (11, 19) is in the form of a membrane which is driven via the drive means (2 to 10, 21 to 26) in a pulsating manner and generating a migrating wave in the medium.
7. Machine according to any one of claims 2 to 6, characterised in that a connecting rod (5) transmitts a reciprocating movement to the elastically deformable wall elements (10, 11, 19), in that, for generating the migrating wave, the connecting rod (5) is guided along a predetermined path (7) during its reciprocating/lifting movement in the lifting direction, so the connecting rod (5), or the end thereof acting on the elastically deformable wall elements (10, 11, 19), undergoes, as well as the reciprocating movement caused by the crankshaft device (2), an additional force of movement (tilting movement) extending transversely to the direction of flow.
8. Machine according to claim 7, characterised in that a form-locking support (8), which yields transversely to the lifting direction, is provided for transmitting the reciprocating/tilting movement generating the migrating wave to the elastically deformable wall elements (11).
9. Machine according to claim 8, characterised in that a sliding member, between the end of the connecting rod and the elastically deformable wall element (10, 11), is used as the form-locking support.
10. Machine according to claim 7, claim 8 or claim 9, characterised in that the form-locking support (8, 9) extends in a rectangular beam-like manner transversely to the direction of flow.
11. Machine according to any one of claims 7 to 10, characterised in that a resilient plate (10), which determines the movement of the elastically deformable wall elements (11), is arranged between the form-locking support (9) and elastically defonnable wall elements (11).
12. Machine according to claim 11, characterised in that the plate (10) consists of resilient material, in particular metal, reinforced plastics material or the like.
13. Machine according to any one of claims 2 to 6, characterised in that the pulsating action (drive) may be achieved using a plurality of drive elements (21 to 26) arranged in succession transversely to the direction of flow (V) and acting in a controlled manner on the elastically deformable wall elements (19).
14. Machine according to claim 13, characterised in that the elastically deformable wall elements are in the form of a membrane (19), with a longitudinal extension corresponding to the drive means, which consists of a plurality of elements (21, 22).
15. Machine according to claim 14, characterised in that the drive means used is a cam shaft (21) having sliding blacks (23 to 26) which are associated with the cams (22) and act, at least indirectly, on the membrane (19) for driving thereof.
16. Machine according to claim 14, characterised in that the machine housing (20) is tubular and in that the tubular wall (20, 33) is used as the rigid wall element.
17. Machine according to any one of the preceding claims, characterised in that two membranes (19) are arranged parallel to each other in the machine housing (20) and the drive means (21 to 26) is arranged in a double-acting manner between the membranes (19).
18. Machine according to any one of the preceding claims, characterised in that the tubular housing (33) has a circular working chamber cross-section.
19. Machine according to any one of claims 2 to 17, characterised in that at least indirectly transmitted magnetic forces or piezo forces are used as the drive means.
20. Machine according to claim 19, characterised in that the magnetic forces or piezo forces are electrically generated and/or controlled.
21. Machine according to either claim 19 or claim 20, characterised in that the elastically deformable wall elements comprise magnetisable material.
22. Machine according to any one of the preceding claims, characterised in that it is used for driving boats or the like.
23. Machine according to claim 22, characterised by the use in or below a hull comprising an inflow opening (46) located below the water level and a corresponding output opening (47) in the stem region of the boat and an output chamber (45) located therebetween.
24. Machine according to any one of the preceding claims, characterised in that the elastically deformable wall element (39, 41) is in the form of a membrane, is clamped in the edge region (42) and always has in section, irrespective of the adjustment position, an undulating contour displaying almost neutral compression/expansion behaviour.
25. Machine according to claim 24, characterised in that profile members, which may be actuated hydraulically or pneumatically, are incorporated into the membrane surfaces (along the contours 7.1 to 7.4), thus enabling the membrane itself to continue to move in a wave-like manner.
26. Machine according to any one of claims 19 to 25, characterised in that the flexible profiles are elongate/planar and/or fibre-shaped piezo elements incorporated into the membrane.

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