EP1353069A2 - Pompe à membrane - Google Patents

Pompe à membrane Download PDF

Info

Publication number
EP1353069A2
EP1353069A2 EP03006884A EP03006884A EP1353069A2 EP 1353069 A2 EP1353069 A2 EP 1353069A2 EP 03006884 A EP03006884 A EP 03006884A EP 03006884 A EP03006884 A EP 03006884A EP 1353069 A2 EP1353069 A2 EP 1353069A2
Authority
EP
European Patent Office
Prior art keywords
pump
chambers
shut
chamber
plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03006884A
Other languages
German (de)
English (en)
Other versions
EP1353069A3 (fr
Inventor
Peter Jähn
Bernhard Krumbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JAEHN, PETER
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of EP1353069A2 publication Critical patent/EP1353069A2/fr
Publication of EP1353069A3 publication Critical patent/EP1353069A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0733—Pumps having fluid drive the actuating fluid being controlled by at least one valve with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series

Definitions

  • piston or diaphragm pumps are used for such tasks used.
  • These types of pumps are oscillating positive displacement pumps.
  • These pumps work on the displacement principle and are included
  • Check valves equipped on the pump suction and pressure side A change in dosage is done by varying the piston or diaphragm stroke so that a changed dead space volume depending on the stroke set in the pump head.
  • the check valves have a decisive influence on the pump function and the Dosing accuracy of the pumps.
  • the well-known piston and diaphragm pumps are driven by a gear with cam or eccentric shaft driven.
  • the direct coupling of these pumps with the Drive leads to large device dimensions, the design of which is miniaturized for many Test facilities is too large.
  • the mechanical drives must be manufactured precisely and increase the investment costs.
  • Pulsating displacement pumps are also equipped with magnetic drives. This makes the building dimensions of this Pump types slightly smaller and the pumps have a constant dead volume in the pump head.
  • Microsystem pumps are known with which very small amounts of liquid can be used can be promoted.
  • the micropumps are so-called precision pumps Function with the slightest contamination on the product side is no longer guaranteed.
  • the flow channels and displacement spaces within the micropump heads have Dimensions of a few ⁇ meters. Contaminated products clog flow channels immediately, or block the dynamically moving pump parts so that a dosing process can be interrupted quickly. Leave small product channels Pumping and dosing of viscous substances does not lead to pressure loss is too big.
  • micromembrane pumps which are based on piezoelectric or thermopneumatic drives very small structural dimensions and can dose small amounts of substance.
  • DE 4402119 C2 describes a micro diaphragm pump that is also thermal is driven.
  • These drive systems always work on the principle a thermally initiated volume expansion on a membrane side, so that the Delivery membrane of the pump generates a pumping effect by the deflection. With no greater differential pressures can be overcome in these drive systems at z.
  • B a liquid substance in a container under higher pressure to dose.
  • these pumps tend to become blocked, so that the operational Use in chemical laboratories is unsatisfactory and in preparative chemical laboratories such pumps are not used.
  • Microsystem pumps so-called gerotor pumps, work at high speeds and create pressure in the annular gap. During the pressure build-up in the discharge In the area of the pump, there is a backflow into the suction area, in particular due to the mechanical tolerances of the rotor and stator of the pump, so the pump efficiency is greatly reduced. Because of the low The driving power of the microsystem pumps is the reproducible dosing of Low-viscosity substances against high pressure are generally not guaranteed.
  • the invention has for its object to develop a pump that is strongly miniaturized, small volumes, e.g. from 5 ⁇ l to 1000 ⁇ l / stroke and per unit of time, promotes and has a high short-term dosing accuracy.
  • the pump should have a good suction behavior and promote against pressure, so that even in pumping against pressure is possible when the pump head is not flooded.
  • the dosing of substances with different densities is not intended to be essential Influence the delivery accuracy and the dosing behavior.
  • the susceptibility to failure against constipation due to product contamination should be significantly reduced so that there is no need for additional fine filters on the suction side of the pump can be.
  • required suction and pressure valves of the pump head should be independent of density, Open and close reproducibly, especially when closed Condition to be tight against gas pressure so that no back flow during pumping takes place, achieves a high degree of efficiency and therefore precise pumping against pressure is made possible.
  • the dosing capacity of the volume flows to be conveyed must be easily adjustable or variable and should be 5 to 100,000 ⁇ l / stroke, preferably 10 to 10,000 ⁇ l / stroke and particularly preferably 10 to 1,000 ⁇ l / stroke be.
  • the pump is designed in particular due to different corrosion requirements inexpensive in the chemical industry from various resistant materials be producible. Due to the occasional harsh operating conditions Repair and maintenance should be simple and inexpensive.
  • the design of the control or drive technology should not have any influence on the pump head size and the possibility of integration in a miniaturized Take the test facility.
  • the pump should be modular, so that through appropriate additions or replacement of module parts, the dosing pump can be easily modified.
  • the change in dosing performance should take place without the displacement path of the membrane or piston in the pump head the dead volume increases so that the aspirated liquid volume increases is completely pushed out of the pump head at any time.
  • a modular lamella-like structure pneumatically driven pump head that consists of at least three rigid Slats (plates) and in the area of the individual parting plane of the middle Plate and the adjacent adjacent plates at least one concave Well is present and each well is completely covered by an elastic membrane is covered and the membrane on one side part of the product space the pump and the other side is part of the control room.
  • the wells one or on both sides of the membrane form the max. Way around the elastic membrane can be deflected.
  • the invention relates to a diaphragm pump with a multi-part pump body, at least comprising three rigid plates and one between each of these plates arranged elastic membrane, the plates at least one pumping chamber and at least two shut-off chambers, in particular in a spatial form of a truncated spherical section of a spherical zone (spherical cap), cylinder or cone, with one inlet and one outlet opening for the material to be conveyed, and the Pump and shut-off chambers are connected to one another via connecting channels, and together with an inlet duct, the connecting ducts and an outlet duct form a passage channel, characterized in that the pump and Isolation chambers through the membranes into a product room and a control room are divided and the control rooms have control lines that are connected to a Control unit are connected.
  • control room is opened in particular via a channel, which is passed through the respective outer plate, e.g. an electro-pneumatic Control unit, e.g. has a vacuum generator connected, to alternate pressurization or vacuum application to the control room enable.
  • an electro-pneumatic Control unit e.g. has a vacuum generator connected
  • a hydraulic fluid for pressure and To use train control.
  • a tax program which has at least four successive control steps, each with an associated one Has time element, for example, the membranes in the pump and Shut-off chambers are deformed so that the control or product space alternates enlarged or reduced.
  • the membrane opens or closes at the same time the inlet and outlet opening of the chambers in the membrane area, so that at least the supply channels in contact with the product are tightly closed during the closing process are and for a given control at least one in the direction of flow lying membranes produces a reproducible volume displacement.
  • the control unit is particularly due to the degree of miniaturization required decentrally arranged and with pneumatic control e.g. with flexible Hoses connected to the pump head.
  • a combination of electronic control and Understood actuators e.g. electro-pneumatic switching valves on a compressed air / vacuum distributor are mounted, which is located in a secondary line pneumatic vacuum generator.
  • the electronic control and the Actuators can e.g. be assembled together in one housing.
  • the electropneumatic Valves are operated by means of a control program to ensure an exact sequence of work steps for the pumping process.
  • shut-off and pumping chambers are on the edge by the inserted and pressed membranes sealed.
  • each shut-off and pumping chamber is an individual one has assigned membrane and the membranes are inserted between the plates.
  • the membranes are clamped around in the Partition planes of the plates follow the pressurized control and product rooms tightly sealed on the outside.
  • a preferred embodiment of the pump has at least in the product space Pump chamber has a groove that is the apex of the pump chamber with the outlet opening connects the pump chamber.
  • the connecting groove from the apex to the pump chamber outlet increases the accuracy and reproducibility of the funding process by using a complete discharge of the dosing volume is guaranteed.
  • the groove forms one dissipating collecting channel for the dosing material and compensates for deformation differences the elastic membrane. There must be one between the inlet of the chamber and the groove Surface to be in place so that the membrane is the inlet opening of the chamber to the groove can seal.
  • the groove can be an elongated channel, the groove can also have a branched contour in the recess.
  • control pressure is on the membrane in all control rooms can be set at least 0.1 bar higher than the prevailing pressure at the outlet channel, the control pressure is preferably at least around 0.5 bar higher and particularly preferably the control pressure is 1 bar higher than that Outlet port pressure.
  • the higher differential pressure between the outlet duct and the control side pressure provides the tight sealing of the respective inlet openings in the chambers by the Membrane safe.
  • the membranes preferably consist of an elastic material, in particular an elastomer, silicone, Viton, Teflon or an EPDM rubber.
  • a preferred embodiment of the pump in which several Shut-off chambers have a common membrane.
  • a preferred embodiment of the diaphragm pump is characterized in that the pump consists of at least three plates and the pumping and isolating chambers are formed by depressions in the plates.
  • the pump consists of at least three Plates and the pumping and shut-off chambers are in one by depressions middle plate formed.
  • diaphragm pump is characterized in that that the pump consists of at least three plates and the pump and Isolation chambers are formed by recesses in the outer plates.
  • the membrane opposite Wall of the control room at least in the pumping chamber a compensation volume, in particular a flat recess, in which the membrane is under negative pressure nestles in the control room.
  • this is Compensation volume at most 100% of the respective associated product space volume, the compensation volume is preferably at most 20%, and the compensation volume is particularly preferably at most 10% of the product space volume.
  • the product spaces of the containment chambers are smaller than that Product chamber of the pump chamber executed.
  • the center-to-center distance of the adjacent inlet and outlet of each Pump or shut-off chamber is two to ten times the largest hydraulic diameter of the respective inlet or outlet opening, preferred the center distance is twice to five times and particularly preferably that two to three times.
  • the defined center distance is an important functional dimension of the chambers. He cares for tightly closing the supply and discharge channels or openings and increases the reproducible delivery of gaseous or liquid substances and influences the degree of miniaturization.
  • the connecting channels between the pumping chamber and the isolation chambers are straight in a preferred embodiment and have a ratio of Channel length to the respective hydraulic diameter of the channels of at most 20, preferably at most 10, particularly preferably at most 5.
  • the small dead space volume between the pump and shut-off chambers improves the Suction power of the pneumatic pump.
  • the diaphragm pump plates are preferred for cleaning and repair purposes releasably connected.
  • a decentralized electro-pneumatic control unit preferably also enables one synchronous control of several pump heads, so that several Pumping only one control unit is necessary.
  • the control for the delivery with the diaphragm pump is preferably carried out in such a way that that a conveyor stroke consists of at least four individual consecutive ones Control steps exist and each individual control step with an intermediate constant or variable timing element for the subsequent control step is separated and the delivery or metering capacity of the pump by changing at least one timer can be changed.
  • the timers interwoven between the control steps ensure that the Pneumatically triggered sub-steps of the pump stroke carried out precisely and completely and the individual steps are reproducible.
  • the synchronous Changing all timers to regulate the delivery rate ensures an easy user-friendly handling of the pump.
  • the timing elements belonging to the control range from T 0.1 seconds to 100 Seconds, preferably T 0.3 seconds to 30 seconds and particularly preferred the timer T is 0.5 seconds to 10 seconds.
  • timers are synonymous with the presence of the control signal and ensure that the fast electronic control signals (signal runtime) not be stopped prematurely before the slower pneumatic Operations to deflect the membranes and the slower ones hydraulic displacement processes on the product-contacting side of the membrane Are completed. Especially when viscous substances are conveyed, the fluid dynamic processes take more time than the electronically triggered processes Control signals.
  • the dosing cycle preferably consists of at least four control steps and has at least two different time elements, of which only one time element can be changed and used to regulate the pump cycle.
  • the pneumatic opening and closing of the membranes in the shut-off chambers be provided with a non-adjustable smaller timer and a variable timer for opening / closing the middle larger pump chamber be used.
  • Two different timing elements are particularly advantageous if the volume the isolation chamber is smaller than the volume of the pump chamber.
  • each timing element is larger than the one required Switching time of the assigned electro-pneumatic multi-way valves.
  • An electro-pneumatic control unit can run several diaphragm pumps in parallel control so that the pumps may have different sized pumping chambers synchronously different substances in different amounts at the same time can dose.
  • the thickness of the elastic membrane is preferably greater than 0.1 mm and less than 5 mm and the height of the pumping and shut-off chamber in the area of the apex the chamber (greatest extent over the membrane) is in particular larger than that 2 times the membrane thickness and less than 10 times the membrane thickness.
  • the concave recesses in the plates can have different geometrical shapes Have shapes such as that of a cylinder, a spherical section or one Truncated cone.
  • the diaphragm pump preferably has a shut-off chamber on the suction and pressure side smaller recesses than for the pump chamber, and all recesses are completely on the product side of the membrane side in the middle plates arranged.
  • a variant of the diaphragm pump preferably consists of a pneumatically controlled one Pump chamber, combined with two solenoid-operated valves as shut-off chambers.
  • the diaphragms used in the pump are preferably around in diameter designed at least 20% larger than the diameter of the chambers formed in the parting plane of the plates.
  • metallic Membranes used as a pump membrane and inserted or insoluble with one of the Partial plates, in particular an outer plate connected by welding.
  • a pulsation damper is in the flow direction behind the pressure-side shut-off chamber, especially in the area the outlet channel of the diaphragm pump.
  • the diaphragm pump is equipped with a integrated spring-loaded overflow valve equipped to an internal product circuit to generate in the diaphragm pump. If the connected control pressure An integrated relaxation option is greater than the desired pump pressure created from the pump pressure side to the pump suction side.
  • the three rigid plates at least two pump units, consisting of two pumping chambers with associated four shut-off chambers to form a double diaphragm pump head arranged.
  • the invention also relates to a pump set consisting of two or more Diaphragm pumps, the diaphragm pumps according to the invention having a common one Have control unit.
  • a pump set is preferred in which the diaphragm pumps pass through continuously Have plates.
  • the diaphragm pump according to the invention with a controllable suction and pressure valve or suction-side and pressure-side shut-off chamber can, depending on the design size very small volume flows of ⁇ 5 ⁇ l / stroke up to the ml range per Minutes are reproducibly promoted.
  • the separate structure is particularly advantageous between the actual pump unit or pump head and the decentralized electrical or electro-pneumatic control unit, this is the required Space requirement for a continuously operating conveyor in a highly miniaturized Pilot plant for screening work very small.
  • This pump principle works without mechanical gear and the necessary components of the pump head have no dynamic function, except for the deflection of the membrane in the area the shut-off and pumping chamber, so that even for a miniaturized version the pump components do not require precision manufacturing. Mechanical interference influences are missing due to the lack of mechanical parts and the manufacturing costs are for this reproducible diaphragm pump head significantly minimized.
  • the pump only needs a power supply and a compressed air supply to be able to work; these are available in every laboratory.
  • the use of the diaphragm pump for dosing is particularly advantageous very small quantities of liquid substance, the volume of which per pump stroke is essential is below the specific drop size.
  • the extremely small hold-up of the pump head and the small dead space volume ensures good suction behavior and fast, reproducible dosing, in particular for applications involving new pharmaceutical substances that are in the early Developmental stages are only available in small quantities.
  • Setting small dosing flows is particularly easy because the setting the dosing quantity with constant displacer volume with an intermediate one Timing in the control takes place. This makes it very easy to do without cross-checking Volume flows can be changed.
  • the lamellar structure of the diaphragm pump with integrated controllable valves which generates a pulsating metering flow due to the pumping principle it is possible to multiply the dosing flow by multiplying the displacement unit and the valves to be comparable, the structural dimensions of the pump in the The pilot plant is not significantly enlarged.
  • Figure 1 is a diaphragm pump 200 in cross section with the associated control 100 and housing and pneumatic distributor 115 shown.
  • the housing has a display 101, an on / off switch 102 and several function buttons 103 to 109, with which needed Parameters entered for the pumping process or for the pumping process, optical can be tracked and saved.
  • the electronic controller 100 enables different operating variants, so that with the button 103 on continuous Operation and switched with button 104 to discontinuous operation of the pump can be.
  • the discontinuous operation of the pump can be done by a Preselectable number of pump strokes set and with button 105 in the control get saved.
  • button 106 you can reduce the set value Parameters, button 107 is for increasing the variable parameters provided, which is then also with the button 105 as a newly selected operating parameter the diaphragm pump can be saved in the control.
  • the button 108 allows you to choose between internal and external control, from, for example, an external process control system.
  • the pump 200 starts work when button 109 is pressed and when the button is pressed repeatedly 109 the operation is stopped again.
  • the electronics with the programmable The control unit sends electrical connection cables at the start of dosing 110 digital signals to the electro-pneumatic multi-way valves 111, 112, 113, 114, which are then in their defined open or closed position (Table 1) switch.
  • the electro-pneumatic multi-way valves 111 to 114 (Manufacturer, for example, SMC Penumatik GmbH, Düsseldorf), are on one pneumatic distributor block 115 mounted.
  • the distribution block has two Supply channels 116, 117.
  • the supply channel 116 is directly connected to the compressed air supply connected and the distribution channel 117 is connected to a vacuum line the vacuum supply connected.
  • the vacuum is created by the bypass installed vacuum generator 118, an injector, generated by the valve 114 Switching on the electrical control is constantly supplied with compressed air.
  • a compact construction is the distributor block 115 with the electro-pneumatic Multi-way valves and the vacuum generator 118 directly in the Housing of the controller 100, so that the compressed air supply to the supply channel 116 via a hose coupling 116 'and the pump head via the hose couplings 119 ', 120', 121 'can be connected.
  • the freely programmable electronic Components, diodes for the optical function display, electrical power supply and an electrical circuit board is not shown in Figure 1.
  • the freely programmable control of the pneumatically operated diaphragm pump 200 switches the electro-pneumatic multi-way valves 111 to 114 and directs the Pneumatic pressure present in distributor block 115 in channel 116 (pressure channel) or the vacuum in the distribution channel 117 (vacuum channel) through the control lines (Capillaries or tubing) 119, 120, 121 to the pneumatic control rooms (Pneumatic rooms) 220, 221, 222 in the pump 200.
  • the valve 111 (V1) is through the control line 119 with the intake valve (lower Shut-off chamber 210) of the diaphragm pump 200 connected. According to the same scheme are the other valve 112 (V2) (upper shut-off chamber 212) and valve 113 (V3) connected to the pump chamber 211 of the pump 200.
  • the valve 114 (V4) supplies the vacuum generator constantly with compressed air and is switched on as soon as the Electronics is supplied with electrical voltage.
  • the diaphragm pump head 200 consists of the three sub-plates 201, 203, 205 and has inserted elastic membranes 202, 204 in the area of the pump chamber 211 and shut-off chambers 210, 212 are pneumatically deformable.
  • the membranes 202, 204 have the same area as the panels 201, 203, 205 to provide a good seal to ensure the atmosphere.
  • the Shut-off chambers 210, 212 are here, for example, in the plate 201 and the Pump chamber 211 is in the plate with a small volume equalization volume 205 and incorporated into the middle plate 203 with the larger volume fraction.
  • shut-off chamber 210 e.g. the controllable suction valve of the pump head named.
  • the pump chamber 211 accordingly represents the delivery chamber and the shut-off chamber 212 represents the controllable pressure valve of the pump head.
  • the membranes 202, 204 divide the pump chamber 211 and shut-off chambers 210 and 212 in control rooms 220, 221, 222 and in product rooms 230, 231, 232.
  • the pump chamber 211 and shut-off chambers 210 and 212 have the shape of truncated cones.
  • the middle plate 203 has an intake duct 207 and an outlet duct 206. Both channels 206, 207 are each one welded capillary extended.
  • the channels 209, 208 connect the Product spaces 230, 231, 232 of the chambers 210, 211, 212 with each other.
  • the pump chamber 211 has a groove 213 as a connecting element from the deepest geometric point of the recess in the plate to the outlet opening or Connection channel 209. It is also clarified that between inlet channel 208 and Start of the outlet channel 209 with the connecting groove 213 is still sufficient there is a large gap to close the openings in the product space to enable the pumping chamber through the membrane 204.
  • the diaphragm pump 200 is shown here in control step 4 (see Table 1).
  • the area of the shut-off chamber 210 (controllable suction valve) is the membrane 202 the control chamber side 220 is pressurized so that the membrane 202 the Intake channel 207 at the inlet 240 (FIG. 2) and the connecting channel 208 at the outlet 241 (Fig. 2) blocked.
  • the associated control chamber 221 is subjected to a vacuum, see above that the membrane area stands out and the supply and discharge connection channel 208, 209 opens.
  • the shut-off chamber 212 is also on the control side Vacuum applied so that the connecting channel 209 and the outlet channel 206 are opened in the following control step 5 (see table 1) the pump stroke volume to displace from the pumping chamber.
  • control step 5 see table 1 the pump stroke volume to displace from the pumping chamber.
  • Figure 1 are required Screws for pulling the panels together and pressing them together inserted membranes not shown.
  • step V1 (111) suction valve V3 (113) displacer V2 (112) pressure valve V4 (114) vacuum initial position 1 1 1 1 1 Step 1 0 1 1 1 2nd step 0 0 1 1 3rd step 1 0 1 1 4th step 1 0 0 1 5th step 1 1 0 1 Back to step 1
  • control sequence there is a changeable timer after each control step 1 - 5 programmed (not shown in Table 1), so that the individual one after the other The control steps taking place do not influence each other and are complete be carried out.
  • the switching times of the electro-pneumatic valves are larger and therefore much slower than the time required to send the digital Signals.
  • the pump function is activated by the intermediate timing elements reproducible and complete according to the control cycle 1-5 (see table 1) carried out.
  • FIG. 2 shows a diaphragm pump similar to the pump described in FIG. 1, however, the chambers or the depressions 210 ', 211', 212 'are in the middle plate 203 '.
  • the chambers 210 'to 212' here have the shape of a spherical section. It can be seen that the height at the apex of the depression Pump chamber is larger than the thickness of the membrane.
  • the Center distance of the supply and discharge channels 207, 208 on the intake side of the Pump (chamber 210 ') larger than the center distance of the supply and discharge Channels 209, 206 of the pressure valve (chamber 212 ').
  • the bigger one Center distance on the suction valve increases the tightness of the suction valve and one Backflow of the product prevented during the pumping process.
  • FIG. 3 shows a variant of the pump 200 from FIG. 2 with three separately inserted ones Membranes 300, 301, 302.
  • the membranes 300, 301, 302 are in operation via the control room side via a hole according to the control program pressurized with compressed air or vacuum to close the pump function guarantee.
  • FIG. 4 shows, for example, the parallel operation of three diaphragm pumps 200a, 200b, 200c of the type shown in FIG. 3 again in the uncontrolled state. These are parallel to the lines of the pressure distributor 115, as in FIG. 1 connected.
  • the pneumatic multi-way valves of the pressure distributor 115 are actuated and effect by means of the electrical control, not shown here via the control lines 119 to 121, which branches here to the three pump heads are connected, the actuation of the membranes.
  • FIGS. 5 and 5a show an embodiment of the diaphragm pump 200d in which two Pump units or two pump heads have common sub-plates.
  • the partial plates are clamped with the screws 500.
  • the main contours like Pump chambers and connecting channels inside the pump head are shown in the figure 5 a shown with broken lines.
  • the double pump head can be used with one Control unit operated so that with a control stroke (accordingly Step 1-5; Table1, Fig.1) double the delivery rate per stroke can be metered.
  • Another use is when the size is the same or different Pump chambers are introduced into the partial plates, so that with a control unit two different substances can be pumped in sync, or they can be Pump head two control units for the generation of different material flows connected.
  • FIG. 5a clearly shows that the outer contours (501, 502, 503) of the chambers in the different levels of the plates overlap one another low dead space volume and therefore good output behavior of the pump guarantee. Furthermore, a particularly compact pump head design possible.
  • FIG. 6 shows in cross section two sections of the plates 203, 205 in the region of the Pump chamber 211 of a diaphragm pump similar to Figure 1.
  • the volume of the pump chamber is distributed in the same proportion on both plates, so that the inserted Membrane 301 is clamped over a concentric sealing surface 214 and the Seals product space 231 and the control space 221 to the outside
  • FIG. 7a shows the top view of the recess in a diaphragm pump in the form of a Spherical section geometry of the pump chamber 211.
  • the intended one can be seen Groove 213, which runs from the apex of the pump chamber to the connecting channel 209 runs and as a collecting channel for a complete emptying of the product space serves.
  • FIG. 7a shows a further special embodiment of a branched groove 213 ' or the collecting channel 213 shown.
  • FIG. 8 shows the diaphragm pump head 200 according to the invention with a Pump chamber 211 "and two shut-off chambers 210", 212 “and the one between the Plates 201 “, 203", 205 “, inserted elastic membrane 202" and 204 ".
  • the diaphragm pump has recesses in the outer Plates 201 “, 205" and the collecting channel 213 "are in plate 203".
  • Figure 9 shows a combined arrangement of the connecting channels of the pump head.
  • the middle plate is shown in a sectional view and the outer Plates 201 ', 205' can be reduced in size due to the arrangement of the passage channel become.
  • the inlet channel 207 'and connecting channel 208' between the pump chamber and the shut-off chamber on the suction side are at right angles to the outer plate contour introduced so that the connecting channel 208 'is straight and short.
  • the dead space volume of the connecting channel 208 ' is thereby minimized.
  • the connecting channel to the pressure side shut-off chamber has a greater length and a larger Dead space. This design requires a third reduced plate 205 'for the structure of the pump.
  • FIG. 9a shows an optimized pump with a small dead space volume. wherein the central plate 203 'is shown in a sectional view.
  • the geometric areas of the recesses of the shut-off chambers are partially or completely in the shadow of the geometrical surface of the pump chamber recess, see above that the connection channels from the pump chamber to the shut-off chambers are extremely short are and an optimized suction behavior of the pump is made possible.
  • the shut-off chamber 212 'from the pump chamber 211' to the pressure side is the Connection channel 209 'positioned at the apex of the pump chamber recess, see above that the collecting channel (see FIG. 7) is omitted.
  • the dead space volume of the pump forms from the volume of the two connecting channels 208 ', 209'.
  • the channel length ratio 208 'to diameter is 3.5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP03006884A 2002-04-12 2003-03-31 Pompe à membrane Withdrawn EP1353069A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10216146 2002-04-12
DE10216146A DE10216146A1 (de) 2002-04-12 2002-04-12 Membranpumpe

Publications (2)

Publication Number Publication Date
EP1353069A2 true EP1353069A2 (fr) 2003-10-15
EP1353069A3 EP1353069A3 (fr) 2004-08-25

Family

ID=28051271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03006884A Withdrawn EP1353069A3 (fr) 2002-04-12 2003-03-31 Pompe à membrane

Country Status (5)

Country Link
US (1) US20030194332A1 (fr)
EP (1) EP1353069A3 (fr)
JP (1) JP2003307178A (fr)
CA (1) CA2424872A1 (fr)
DE (1) DE10216146A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011023420A1 (fr) * 2009-08-25 2011-03-03 Hach Lange Gmbh Appareil d'analyse d'eau doté d'une pompe péristaltique multichambre à actionnement pneumatique
WO2018114862A1 (fr) * 2016-12-21 2018-06-28 Fresenius Medical Care Deutschland Gmbh Dispositif d'actionnement et procédé pour faire fonctionner un dispositif d'actionnement ainsi que pompe à membrane pourvue d'un dispositif d'actionnement et d'un dispositif de pompe à membrane, et système de traitement du sang pourvu d'une pompe à membrane
US10578098B2 (en) 2005-07-13 2020-03-03 Baxter International Inc. Medical fluid delivery device actuated via motive fluid
US11478578B2 (en) 2012-06-08 2022-10-25 Fresenius Medical Care Holdings, Inc. Medical fluid cassettes and related systems and methods

Families Citing this family (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003230862A1 (en) 2002-04-11 2003-10-27 Deka Products Limited Partnership System and method for delivering a target volume of fluid
US7008193B2 (en) * 2002-05-13 2006-03-07 The Regents Of The University Of Michigan Micropump assembly for a microgas chromatograph and the like
DE10224750A1 (de) 2002-06-04 2003-12-24 Fresenius Medical Care De Gmbh Vorrichtung zur Behandlung einer medizinischen Flüssigkeit
DE10316395B4 (de) * 2003-04-10 2008-04-17 Jähn, Peter Membranpumpe
US7011523B2 (en) * 2003-10-22 2006-03-14 Ultradent Products, Inc. Bleaching compositions and devices having a solid adhesive layer and bleaching gel adjacent thereto
DE602005003106T2 (de) * 2004-01-21 2008-08-21 Imi Vision Ltd., Alcester Getränkespender
US8454324B2 (en) * 2004-03-18 2013-06-04 Precision Dispensing Systems Limited Pump
NZ531822A (en) * 2004-03-18 2007-08-31 Prec Dispensing Systems Ltd A membrane pump
US7717682B2 (en) * 2005-07-13 2010-05-18 Purity Solutions Llc Double diaphragm pump and related methods
US7767754B2 (en) 2005-11-08 2010-08-03 Momentive Performance Materials Inc. Silicone composition and process of making same
US7479522B2 (en) * 2005-11-09 2009-01-20 Momentive Performance Materials Inc. Silicone elastomer composition
US9415992B2 (en) 2006-03-06 2016-08-16 The Coca-Cola Company Dispenser for beverages having a rotary micro-ingredient combination chamber
US10280060B2 (en) 2006-03-06 2019-05-07 The Coca-Cola Company Dispenser for beverages having an ingredient mixing module
US8960500B2 (en) * 2006-03-06 2015-02-24 The Coca-Cola Company Dispenser for beverages including juices
US10537671B2 (en) 2006-04-14 2020-01-21 Deka Products Limited Partnership Automated control mechanisms in a hemodialysis apparatus
US12421952B2 (en) 2013-03-15 2025-09-23 Deka Products Limited Partnership Reciprocating diaphragm pumps for blood treatment systems and methods
US7794141B2 (en) 2006-04-14 2010-09-14 Deka Products Limited Partnership Thermal and coductivity sensing systems, devices and methods
US20140199193A1 (en) 2007-02-27 2014-07-17 Deka Products Limited Partnership Blood treatment systems and methods
US8562834B2 (en) 2007-02-27 2013-10-22 Deka Products Limited Partnership Modular assembly for a portable hemodialysis system
US9028691B2 (en) 2007-02-27 2015-05-12 Deka Products Limited Partnership Blood circuit assembly for a hemodialysis system
US8491184B2 (en) 2007-02-27 2013-07-23 Deka Products Limited Partnership Sensor apparatus systems, devices and methods
US20090107335A1 (en) * 2007-02-27 2009-04-30 Deka Products Limited Partnership Air trap for a medical infusion device
US8393690B2 (en) * 2007-02-27 2013-03-12 Deka Products Limited Partnership Enclosure for a portable hemodialysis system
US8366655B2 (en) 2007-02-27 2013-02-05 Deka Products Limited Partnership Peritoneal dialysis sensor apparatus systems, devices and methods
CA2681912C (fr) 2007-02-27 2015-09-29 Deka Products Limited Partnership Systemes et procedes d'hemodialyse
US8425471B2 (en) 2007-02-27 2013-04-23 Deka Products Limited Partnership Reagent supply for a hemodialysis system
US8357298B2 (en) 2007-02-27 2013-01-22 Deka Products Limited Partnership Hemodialysis systems and methods
US8042563B2 (en) 2007-02-27 2011-10-25 Deka Products Limited Partnership Cassette system integrated apparatus
US8409441B2 (en) 2007-02-27 2013-04-02 Deka Products Limited Partnership Blood treatment systems and methods
US8038640B2 (en) * 2007-11-26 2011-10-18 Purity Solutions Llc Diaphragm pump and related systems and methods
US11833281B2 (en) 2008-01-23 2023-12-05 Deka Products Limited Partnership Pump cassette and methods for use in medical treatment system using a plurality of fluid lines
EP3620191B1 (fr) 2008-01-23 2023-12-13 DEKA Products Limited Partnership Appareil d'auto-connexion de conduit de fluides et procédés pour système de traitement médical
US11975128B2 (en) 2008-01-23 2024-05-07 Deka Products Limited Partnership Medical treatment system and methods using a plurality of fluid lines
US11738130B2 (en) 2008-01-23 2023-08-29 Deka Products Limited Partnership Fluid line autoconnect apparatus and methods for medical treatment system
US8192401B2 (en) 2009-03-20 2012-06-05 Fresenius Medical Care Holdings, Inc. Medical fluid pump systems and related components and methods
EP2453946B1 (fr) 2009-07-15 2013-02-13 Fresenius Medical Care Holdings, Inc. Cassettes pour fluide médical et systèmes afférents
GB0915327D0 (en) * 2009-09-03 2009-10-07 Quanta Fluid Solution Ltd Pump
EP3072545B1 (fr) 2009-10-30 2019-05-08 DEKA Products Limited Partnership Appareil de détection de déconnexion de dispositif d'accès intravasculaire
EP4249964B1 (fr) 2010-07-07 2025-10-15 DEKA Products Limited Partnership Système de traitement médical et procédés utilisant une pluralité de conduites de fluides
US9624915B2 (en) 2011-03-09 2017-04-18 Fresenius Medical Care Holdings, Inc. Medical fluid delivery sets and related systems and methods
JP5185475B2 (ja) * 2011-04-11 2013-04-17 株式会社村田製作所 バルブ、流体制御装置
EP3006059B1 (fr) 2011-04-21 2017-09-27 Fresenius Medical Care Holdings, Inc. Systèmes de pompage de fluide médical et dispositifs et procédés associés
AU2012258687C1 (en) 2011-05-24 2018-03-08 Deka Products Limited Partnership Hemodial ysis system
SG195155A1 (en) 2011-05-24 2013-12-30 Deka Products Lp Blood treatment systems and methods
EP3219342B1 (fr) 2011-11-04 2019-01-09 DEKA Products Limited Partnership Système de traitement médical et procédés utilisant une pluralité de conduites de fluide
US9500188B2 (en) 2012-06-11 2016-11-22 Fresenius Medical Care Holdings, Inc. Medical fluid cassettes and related systems and methods
DE102013102397B4 (de) * 2013-03-11 2020-01-02 Bürkert Werke GmbH Dosiersystem, Gehäuseteil für eine Dosiereinheit und Dosiereinheit
US9561323B2 (en) 2013-03-14 2017-02-07 Fresenius Medical Care Holdings, Inc. Medical fluid cassette leak detection methods and devices
GB201305758D0 (en) * 2013-03-28 2013-05-15 Quanta Fluid Solutions Ltd Blood Pump
DE102013013414B3 (de) * 2013-08-09 2015-01-29 Fresenius Medical Care Deutschland Gmbh Kassettenmodul
US10117985B2 (en) 2013-08-21 2018-11-06 Fresenius Medical Care Holdings, Inc. Determining a volume of medical fluid pumped into or out of a medical fluid cassette
US10047738B2 (en) * 2013-11-25 2018-08-14 General Electric Company Downhole radially actuated longitudinal diaphragm pump
EP3151877B1 (fr) 2014-06-05 2020-04-15 DEKA Products Limited Partnership Système pour calculer une modification de la volume d'un fluide dans une chambre de pompage
US10697447B2 (en) * 2014-08-21 2020-06-30 Fenwal, Inc. Magnet-based systems and methods for transferring fluid
SG11201807797RA (en) * 2016-03-18 2018-10-30 Deka Products Lp Pressure control gaskets for operating pump cassette membranes
US10792408B2 (en) * 2016-10-27 2020-10-06 Baxter International Inc. Medical fluid therapy machine including readily accessible pneumatic manifold and valves therefore
US10471427B2 (en) * 2017-04-24 2019-11-12 Biorep Technologies, Inc. Fluidic manifold cartridge system
US11371498B2 (en) 2018-03-30 2022-06-28 Deka Products Limited Partnership Liquid pumping cassettes and associated pressure distribution manifold and related methods
CN110608157B (zh) * 2018-06-15 2024-05-24 上海城投污水处理有限公司 气动隔膜泵的控制装置
DE102018126116A1 (de) * 2018-10-19 2020-04-23 Robert Bosch Gmbh Hydraulischer Verteilerblock, hydraulisches Aggregat und Verfahren
DE102020200355A1 (de) * 2020-01-14 2021-07-15 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Betreiben einer pneumatischen Membranpumpe zum Antreiben eines fließfähigen Mediums
US12350625B2 (en) * 2021-05-10 2025-07-08 Innovative Engineering Systems, Inc. Scalable tangential flow filtration method and retrofit kit
US20240050945A1 (en) * 2022-08-09 2024-02-15 Massachusetts Institute Of Technology Smooth flow control systems for embedded micropumps on microfluidic cell culture devices
CN120367783A (zh) * 2024-01-25 2025-07-25 梅特勒-托利多仪器（上海）有限公司 隔膜泵

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1311901A (en) * 1970-04-15 1973-03-28 Bertil Nystroem Ernst Holger Membrane pump
US5158210A (en) * 1990-06-13 1992-10-27 Du Benjamin R Condiment dispensing device
DE4402119C2 (de) * 1994-01-25 1998-07-23 Karlsruhe Forschzent Verfahren zur Herstellung von Mikromembranpumpen
EP1072868A1 (fr) * 1999-07-09 2001-01-31 Sawatec Ag Dispositif de dosage de liquides
US6190136B1 (en) * 1999-08-30 2001-02-20 Ingersoll-Rand Company Diaphragm failure sensing apparatus and diaphragm pumps incorporating same
US6752599B2 (en) * 2000-06-09 2004-06-22 Alink M, Inc. Apparatus for photoresist delivery

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10578098B2 (en) 2005-07-13 2020-03-03 Baxter International Inc. Medical fluid delivery device actuated via motive fluid
US10590924B2 (en) 2005-07-13 2020-03-17 Baxter International Inc. Medical fluid pumping system including pump and machine chassis mounting regime
US10670005B2 (en) 2005-07-13 2020-06-02 Baxter International Inc. Diaphragm pumps and pumping systems
US11384748B2 (en) 2005-07-13 2022-07-12 Baxter International Inc. Blood treatment system having pulsatile blood intake
US12392335B2 (en) 2005-07-13 2025-08-19 Baxter International Inc. Medical fluid pumping system having backflow prevention
WO2011023420A1 (fr) * 2009-08-25 2011-03-03 Hach Lange Gmbh Appareil d'analyse d'eau doté d'une pompe péristaltique multichambre à actionnement pneumatique
US8881580B2 (en) 2009-08-25 2014-11-11 Hach Lange Gmbh Process analysis unit
US11478578B2 (en) 2012-06-08 2022-10-25 Fresenius Medical Care Holdings, Inc. Medical fluid cassettes and related systems and methods
WO2018114862A1 (fr) * 2016-12-21 2018-06-28 Fresenius Medical Care Deutschland Gmbh Dispositif d'actionnement et procédé pour faire fonctionner un dispositif d'actionnement ainsi que pompe à membrane pourvue d'un dispositif d'actionnement et d'un dispositif de pompe à membrane, et système de traitement du sang pourvu d'une pompe à membrane
CN110088474A (zh) * 2016-12-21 2019-08-02 费森尤斯医疗护理德国有限责任公司 操作装置和用于运行操作装置的方法以及具有操作装置和隔膜泵装置的隔膜泵和具有隔膜泵的血液处理设备
US11441554B2 (en) 2016-12-21 2022-09-13 Fresenius Medical Care Deutschland Gmbh Operating device, method for operating an operating device, diaphragm pump having an operating device and a diaphragm pump device, and a blood treatment apparatus having a diaphragm pump

Also Published As

Publication number Publication date
JP2003307178A (ja) 2003-10-31
US20030194332A1 (en) 2003-10-16
DE10216146A1 (de) 2003-10-30
EP1353069A3 (fr) 2004-08-25
CA2424872A1 (fr) 2003-10-12

Similar Documents

Publication Publication Date Title
DE10216146A1 (de) Membranpumpe
EP1834659B1 (fr) Compresseur d'appareils d'inhalation thérapeutique
EP3559464B1 (fr) Dispositif de pompe à membrane et pompe à membrane comprenant un dispositif de pompe à membrane et un dispositif d'actionnement
DE3718967A1 (de) Pumpe
EP1131562A1 (fr) Pompe a ejecteur a etages multiples
EP3559465B1 (fr) Dispositif d'actionnement et procédé pour faire fonctionner un dispositif d'actionnement ainsi que pompe à membrane pourvue d'un dispositif d'actionnement et d'un dispositif de pompe à membrane, et système de traitement du sang pourvu d'une pompe à membrane
DE68907576T2 (de) Verdrängerpumpe.
EP2396632A1 (fr) Procédé, commande, agencement de vannes et dispositif de formation de portions pour le portionnement d'une pâte fluide, éventuellement mise sous pression
DE10316395B4 (de) Membranpumpe
DE3909800C2 (fr)
DE102013108948B4 (de) Vorrichtung zur Beförderung von Flüssigkeiten mit Hilfe einer Piezo-Antriebsvorrichtung
DE19844518A1 (de) Hydraulischer Wegverstärker für Mikrosysteme
DE20311304U1 (de) Membranpumpe
DE19523370C2 (de) Verfahren und Vorrichtung zur verschleiß- und leckage-kontrollierten volumetrischen Dosierung einer fließfähigen Komponente
CN104948410B (zh) 一种增压泵及其增压方法
DE69830775T2 (de) Hydraulisch angetriebene Doppelmembranpumpe
EP1348487B1 (fr) Installation de revêtement avec un pulvérisateur et un pompe de dosage
WO2001004584A1 (fr) Dispositif de dosage pour liquides
DE102005044904B4 (de) Elektromagnetisch betreibbare Dosierpumpe
CN212418506U (zh) 用于透析器生产的注胶阀
DE10313158A1 (de) Mikropumpe mit einem membranartigen Aktor
EP3441612A1 (fr) Unité de pompe, dispositif de stockage équipé d'une telle unité de pompe et procédé de fonctionnement dudit dispositif de stockage
DE19536491A1 (de) Vorrichtung zur Förderung gasförmiger oder flüssiger Medien
DE102010038225B4 (de) Schlauchmembran-Prozeßpumpe
DE102007030043A1 (de) Piezoelektrisch angetriebene Dosierpumpe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BAYER INDUSTRY SERVICES GMBH & CO. OHG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: JAEHN, PETER

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050226