EP2129915A2 - Vacuum diaphragm pump unit - Google Patents

Vacuum diaphragm pump unit

Info

Publication number
EP2129915A2
EP2129915A2 EP08706385A EP08706385A EP2129915A2 EP 2129915 A2 EP2129915 A2 EP 2129915A2 EP 08706385 A EP08706385 A EP 08706385A EP 08706385 A EP08706385 A EP 08706385A EP 2129915 A2 EP2129915 A2 EP 2129915A2
Authority
EP
European Patent Office
Prior art keywords
diaphragm
membrane
connecting elements
saugpumpenaggregat
pump
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Withdrawn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
EP08706385A
Other languages
German (de)
French (fr)
Inventor
Christoph Rebsamen
Marcel Felber
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.)
Medela Holding AG
Original Assignee
Medela Holding 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
Priority to CH4052007 priority Critical
Application filed by Medela Holding AG filed Critical Medela Holding AG
Priority to PCT/CH2008/000086 priority patent/WO2008110022A2/en
Publication of EP2129915A2 publication Critical patent/EP2129915A2/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/0066Suction pumps
    • A61M1/0072Membrane pumps, e.g. bulbs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/06Milking pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02Stopping, starting, unloading or idling control
    • F04B49/03Stopping, starting, unloading or idling control by means of valves

Abstract

A vacuum diaphragm pump unit comprises a dimensionally stable diaphragm base (1), a dimensionally stable one-piece diaphragm cover (3) having a bottom area and a side wall (36) that extends around the bottom area and widens towards the exterior, and a one-piece pump diaphragm (2) which has a diaphragm plate (20), a flexible diaphragm piston (21), at least one inlet valve flap (23) and at least one outlet valve flap (24). The diaphragm plate (20) is interposed between the diaphragm base (1) and the diaphragm cover (3). The pump diaphragm (2) and the diaphragm cover (3) are interconnected in a predetermined position with respect to each other via connecting elements (15, 15', 15''). The diaphragm piston (21) extends through the diaphragm base (1) and the diaphragm piston (21) covers a pump chamber (31) of the diaphragm cover (3). The invention is characterized in that more than three connecting elements (15, 15', 15'') are present and are integrally bonded and/or form-locked.

Description

Membransaugpumpenaggregat

technical field

The invention relates to a Membransaugpumpenaggregat according to the preamble of claim 1.

State of the art

A generic diaphragm pump unit as part of a breast pump is known for example from US 4,964,851. The breast pump comprises an electric motor, a driven means of the motor connecting rod and an associated pump diaphragm. The pump membrane is held in a frame and the membrane, together with a membrane lid having a pumping chamber. When available on the market pump membrane frame, pump diaphragm and the diaphragm cover are interconnected by means of a press connection, for which purpose three pins of the diaphragm frame are held in a frictional engagement in corresponding openings in the membrane lid.

Also US 7070400 discloses such a membrane pump unit of a suction pump, in which case the diaphragm has a diaphragm piston with the rear recesses. The diaphragm cover defining a space having a flat bottom portion and a conically flared circumferential side wall. This space is covered by the diaphragm piston and forms the pump chamber. EP 0744180 also describes a Membransaugpumpe, which is now, however, suitable for the simultaneous use of two suction ports.

2006/032156 further shows where a diaphragm pump with three housing parts which are connected to each other with snap elements.

Summary of the Invention

It is an object of the invention to provide a Membransaugpumpenaggregat having an increased process stability.

This object is achieved by a Membransaugpumpenaggregat having the features of claim 1.

The inventive Membransaugpumpenaggregat has a dimensionally stable membrane frame, a dimensionally rigid integral membrane lid which a pump chamber with a bottom portion and a ground area orbiting and having the ground area away outwardly flared side wall, and is integral with a pump diaphragm which a diaphragm plate, a flexible diaphragm piston, at least having an inlet valve flap and at least one discharge valve, and a one-piece pump diaphragm with a diaphragm plate, a flexible diaphragm piston and having at least one inlet valve flap and at least one discharge valve, where the membrane disk between the membrane frame and the diaphragm cover is arranged and membrane frame, pump diaphragm and the diaphragm cover means connecting elements are connected in a predetermined position to each other together. The diaphragm piston passes through the membrane frame and the diaphragm piston is integral with the diaphragm cover, a pump chamber and covers the pumping chamber. Erfrndungsgemäss more than three connecting elements are present, forming a material and / or form fit.

The connecting members connect the membrane frame and the diaphragm cover each other and the pump diaphragm is held between the membrane base and the membrane lid. The pump membrane may be penetrated by the connecting elements or be held between them.

The material and / or form-fitting ensure that the connection can not solve by yourself or by vibrations. In the case of the frictional connection used so far, it is possible that the connection between the individual parts, that is, frame and cover membrane, dissolves, particularly if the pump triggers vibrations in the area of ​​the natural vibration of the device.

Furthermore, the assembly is simplified. Typically, the assembly is done manually. This turns out in practice to be easier when several connectors and position points are present than if three corresponding points have to be brought by hand to cover. The risk of tilting is reduced.

Although the use of more than three fasteners should actually lead to a static indeterminacy, it has been found that improved overall dimensional stability is obtained. The use of more than three, in particular six to twelve, connecting elements thus results in a larger size stability and overall stiffness of the device. Characterized diaphragm cover and the diaphragm frame can be less bent and the aggregate has an increased tightness and on the risk that the unit will leak due to temperature fluctuations, vibration or metal fatigue is minimized. Preferably nine Verbindungselemen- te be used which are distributed over the edge region.

Thanks to the use of a plurality of connecting elements, the natural frequency of the system is increased. The acoustic characteristics are improved. The tendency for noise during the pumping operations is reduced.

Preferably, the connection means pins which are fixed in the receptacles. They can be bonded, for example, welded or riveted. but leave in place the pins be used such as snap hooks, Tannenbaum snapper and similar substances also form-fitting elements.

It is also possible to use a shape and material circuit, for example by welded-Tannenbaum snapper.

In a preferred embodiment of the membrane lid over its entire surface has an approximately uniform thickness. This can also be encryption train and prevent deformation and increase the tightness.

The inventive Saugpumpenaggregat can be produced economically, in particular because it consists only of three parts, with the two dimensionally stable parts, membrane structure and membrane lid, can be produced by injection molding of a plastic, and the pump diaphragm is preferably made of liquid silicone injection molding.

This Saugpumpenaggregat is preferably used in breast pumps for pumping breast milk. However, it is also suitable for other suction pumps such examples play as drainage pumps.

Further advantageous embodiments emerge from the dependent claims.

Brief Description of Drawings

In the following, the subject invention is explained with reference of a preferred embodiment which is illustrated in the accompanying drawings. Show it:

1 shows a perspective exploded view of the erfϊndungsgernässen

Membransaugpumpenaggregats from above; Figure 2 is an exploded perspective view of Membransaugpum- penaggregats according to Figure 1 from below;

Figure 3 is a perspective view of the diaphragm frame;

Figure 4 is a perspective view of the membrane lid in a second embodiment;

5 shows a perspective view of a fastening pin;

6 shows a membrane frame with an electric motor in an exploded view, and

7 shows a perspective exploded view of the Membransaugpum- penaggregats in a further embodiment.

Ways of carrying out the invention

In the following directions are used as the top and bottom. These relate only to the arrangement of individual parts in the figures and do not refer to the installation position of the inventive Membransaugpumpenaggregats in a suction pump.

The erfϊndungsgemässe Membransaugpumpenaggregat according to FIG 1 has a membrane frame 1, a pump diaphragm 2 and a diaphragm cover. 3 All these parts are preferably formed in one piece each. Membrane frame 1 and Membrande- ekel 3 are dimensionally stable, and preferably, produced by injection molding of a plastic material, for example of thermoplastic material such as polyester. Also, the pump diaphragm 2 is formed in one piece and in Spritzgussver- drive from liquid silicone.

The membrane frame 1 has a plane-parallel base plate 10 with a circular transit gangsöffhung 11. At one end of the base plate 10 is perpendicular to a limit stop plate 16 integrally formed. This stopper plate 16 has a pump unit recess 19 in which a non-illustrated valve unit, for example as described in US 4,964,851 disclosed is maintained. Within the receptacle 19, a suction opening 18 in the stop plate 16 is provided, which on the turns of visible in Figure 2 back into a suction nozzle 18 '.

On the opposite side of the stopper plate 16 of the base plate a shown in Figure 6, motor 4 is provided, which is connected via an unillustrated connecting rod with the below-described Pleuelanschluss 26 of the pump diaphragm.

As can be seen in Figure 2, the stop plate is provided with a Emiassöffnung 13 16, which is directed to the pump membrane 2 toward. This inlet port 13 is connected via a connecting channel 13 'and a' is connected to this inlet channel 13 connected with the external environment. This can be seen in Figure 3.

Furthermore, the base plate 10, as is now well again seen in Figure 1, on its surface a channel 10 ', which "ends in the stop plate 16 opening in a transit 10th This is the assembly of a vacuum, not shown Regulierstiftes ,

On the underside of the base plate 10 which is visible in Figure 2, is a first circumferential sealing groove 12 is present. It encloses the passage opening 11, the inlet port 13 and a discharge duct 14 forming a groove. This outlet port is at the inlet opening 13 diametrically opposite side of the through holes disposed opening 11 and terminates at a side edge of the base plate 10. At this end, the base plate an upper channel conclusion 17 in the form of a protruding nose with a U-shaped longitudinal section. Connecting elements on the base plate 10 is integrally formed, which, after projecting the pump diaphragm towards the bottom. These connecting elements in this embodiment are substantially cylindrical pins 15, 15 ', 15 ". However, other fasteners such as snap elements existing be the. In this case, the snap elements are preferably formed on the outer edges of the base plate. This second embodiment is shown in Figure 7. am membrane frame 1 suitable engaging clips 152. the pump diaphragm 2 are at the peripheral end faces of hooks 151 and the diaphragm cover 3 to be formed. does not require any fasteners., but is simply held clamped between the diaphragm cover 3 and diaphragm frame 1.

The pins 15, 15 ', 15 "according to the first embodiment are preferably exclusively in the edge region of the base plate 10 and outside of the seal groove 12 distributed over the circumference. There are more than three pins 15, 15', 15" Exists , In the illustrated example, there are nine pins, preferably six to twelve pens are used.

In a simplest embodiment, all of the pins are equally formed long and the same thickness. However, it can also be used differently shaped pins, as is the case here. Some pins, preferably at least two mutually opposite pins 15 'are formed as positioning pins and have a cylindrical body and a tapered or tapered tip. Some pins, here first pins 15 have a larger diameter than second pins 15'. The pins 15, 15 ', 15 "can also be provided with vertical ribs 150, as shown in FIG. 5

The length of the pins 15, 15 ', 15 "is sized such that they pass through the subsequently arranged pump membrane 2 and at least partly project into the diaphragm cover 3, and this preferably also completely through and terminate at its overall genüberliegenden surface.

It is also possible that the pins are integrally formed on the diaphragm cover and that part of the pins on the membrane structure and a part arranged on the membrane lid. This is illustrated in Figure 4

Below the base plate 10 arranged pump diaphragm 2 comprises a likewise substantially plane-parallel plate formed membrane 20th This membrane plate

20 has an approximately equal base surface as the base plate 10. In the middle area of ​​the diaphragm plate 20 passes this on in a membrane piston 21, which the diaphragm plate 20 projecting upward to the base plate 10 down. The diaphragm piston 21 is formed kappenföπnig, wherein it preferably has annular circumferential depressions gene. In the center of the diaphragm piston 20, the connecting-rod is formed in a hollow cylindrical shape 26th The connecting rod is easy in this recording plug 26 and is interlocked friction held therein.

On one side of the diaphragm piston 21 is a horseshoe-shaped inlet valve flap 23 is present. On the opposite side of the diaphragm piston 21, the diaphragm plate 20 has two spaced apart from each other also substantially horseshoe-shaped outlet valve flaps 24. There may be more than one and less than two valve flaps 23, 24th

The diaphragm plate 20 has an upper sealing lip 22 which on the base plate 10 facing the upper surface surrounding the diaphragm piston 21 and the valve flaps 23, 24, is closed in itself and projects upwardly.

Similarly, 20 has the diaphragm plate on its side facing the membrane lid 3 underside facing a peripheral lower sealing lip 28 which likewise diaphragm piston

21 and valve flaps 23, 24 surrounding and projecting downwards. Preferably, the two sealing lips 22, 28 are congruent.

However, it is also possible that only one of the two sealing lips is present or that they are not congruent. Instead of the sealing lips and sealing grooves may be present and the membrane lid and / or the membrane frame are provided with a respective sealing lip or edge. On one side edge of the diaphragm plate 20 a protruding nose 27 is formed which protrudes the edge, but otherwise aligned with the top and bottom of the plate twentieth

Outside of the sealing lips 22, 28, the diaphragm plate 20 of the first and second mounting holes 25, 25 'passes through whose diameter is preferably the associated pins 15, 15', 15 "of the base plate 10 correspond to or are slightly larger.

The diaphragm cover 3 has a cover plate 30, the pump diaphragm directed towards the upper side 2 is also formed substantially planar. Its base, however, is patterned as described below. In the center of the lid plate 30 a pump chamber 31 is formed. This has a bottom area at the same level as the surface of the remaining cover plate 30 and a circular circumferential raised side wall 36, the side wall is formed upwardly and outwardly inclined so that the opening on the bottom portion extends. The side wall 36 may be straight or obliquely, as shown here, be curved.

The side wall 36 is at least one inlet channel, here three mutually parallel inlet channels 33 'broken. These channels 33 come from an inlet tank 33, which is formed as a recess in the cover plate 30 and terminate in the base region spaced from the side wall 36. On the opposite side, the side wall 36 of at least one, here two radially open outwardly extending outlet ports 34 which spaced end in the cover plate 30 outside the side wall 36th

Pumping chamber 31, inlet tank 33 and the intake and exhaust ports 33 ', 34 are surrounded by a completely circumferential second seal groove 32nd

On one side edge of the cover plate 30 has a projecting lug is formed, forming a lower channel 37 with completion of upstanding side walls. This lower final channel 37 is the counterpart to the upper channel 17 and thus conclusion preferably has a U-shaped longitudinal section. The above-mentioned projecting lug 27 of the pump diaphragm 2 is dimensioned in their size so that they che Grundfiä- of the channel terminations 17, 37 corresponds to and is held in this.

Outside of the second seal groove 32 are Aumahmeöffnungen 35, 35 ', 35 "present, which the positioning and fixing pins 15, 15', 15" to record. These openings 35, 35 ', 35 "are aligned on top of the cover plate 30 with the latter. On the bottom of the same, however, they are formed as receiving sockets, and are preferably interconnected via reinforcing ribs 38. The sockets can provided on its inside with vertical ribs be or comprise positioning. preferably, the bushings have a non-circular inner cross-section, they are preferably polygonal. This in turn increases the stability of the fertil connects with the pins.

As can be seen in Figure 2, the underside of the lid plate 30 is structured as a negative to the integrally formed top of the cover plate members is formed. That is, the recesses of the upper side are elevated in the bottom down forms excluded and the elevations of the upper side are recessed accordingly in the bottom. 30 Thereby, the cover plate has a approximately over the whole or over a large range of the base uniform thickness. This is not true at all points. For example, this does not apply in the field of reinforcing webs between the bushings and between any possible other increases in the bottom. This type of structured cover plate can be used even at Saugpumpenaggregaten whose frictional fasteners each part or force-locking connection.

In the assembled state of the inventive assembly, the pump membrane 2 or its diaphragm plate 20 between the base plate 10 of the Memb- range stells 1 and the cover plate is now clamped diaphragm plate 30 of the third In this case, the diaphragm piston 21 passes through the through-opening 11 and can move in accordance with the motor up and down. The diaphragm piston 21 covers the pumping chamber 31 and, since the outer diameter of the diaphragm piston 21 is equal to or larger than the outer diameter of the side wall 36 of the pump chamber 31, the chamber 31 is sealed except for the inlet and outlet channels 33 ', 34 from.

The mounting pins 15, 15 ', 15 "extend through the mounting holes 25, 25' of the pump membrane 2 and in the Aufhahmebuchsen 35, 35 ', 35" form-fit inserted the membrane lid. 3 Moreover, they are adhesively bonded therein by an adhesive or they are otherwise joined material or material fit. For example, they can ultrasonically welded, vibrationsverschweisst, welded comparable with high-frequency or ultraschallgenietet.

Thanks to this specific positioning of the three individual parts is now the inlet port 13 via the inlet valve flap 23 and those above the inlet tank 33. The outlet channel 14 of the diaphragm frame 1 is located above the outlet valve flaps 24 and this through the exhaust ports 34 of the membrane lid.

The upper and lower sealing lip 22, 28 are in the first and the second seal groove 12, 32 and thus seal the enclosed characterized each areas to the outside.

The side walls of the lower channel 37 statements enclose resiliently, the side walls of the upper channel statements 17 and thus form a tight form and force closure. The nose 27 of the pump diaphragm 2 rests on the lower channel final 37th

The diaphragm piston 21 by sets in the assembled state of the assembly, the through hole 11 of the base plate 10. List of Reference Numerals

1 membrane frame

10 base plate

10 'channel

10 "through opening

11 through opening

12 first seal groove

13 Einlassöfϊhung

13 'inlet duct

13 "connection channel

14 outlet channel

15 first fixing pin

15 'second fixing pin

15 "positioning

150 vertical ribs

151 hooks

152 engaging clips

16 stop plate

17 upper channel final

18 suction opening

18 'suction

19 pump assembly holder

2 pump diaphragm

20 diaphragm plate

21 diaphragm piston

22 upper sealing lip

23 inlet valve flap

24 outlet valve flap

25 first fastening hole

25 'second fastening hole 26 Pleuelanschluss

27 nose

28 lower sealing lip

3 diaphragm cover

30 cover plate

31 pumping chamber

32 second seal groove

33 inlet basin

33 'inlet duct

34 outlet channel

35 first Aufhahmeöffhung

35 'second Autnahmeöfrnung

35 "positioning

36 sidewall

37 lower channel final

38 rib

4 electric motor

Claims

claims
1. Membransaugpumpenaggregat with a rigid membrane frame (1), a rigid one-piece diaphragm cover (3) having a pump chamber
(31) having a bottom portion and a ground area encircling and extending from the bottom portion outwardly flared side wall (36), and with an integral pump diaphragm (2) including a diaphragm plate (20), a flexible diaphragm piston (21), at least one inlet valve flap (23) and at least one discharge valve (24), wherein the diaphragm plate (20) between the membrane frame (1) and the membrane lid (3) and membrane frame (1), the pump diaphragm (2) and the membrane lid (3) by means of connecting elements (15, 15 ', 15 ") are connected in a predetermined position to each other together, the diaphragm piston (21) passes through the membrane frame (1) and said covers the diaphragm piston (21) a pumping chamber (31) of the membrane lid (3), characterized in that that more than three connecting elements (15, 15 ', 15 ") are present and that they form a material and / or form fit.
2. Saugpumpenaggregat according to claim 1, wherein the connecting elements (15 ', 15', 15 ") in receiving openings (35, 35 ', 35") of the membrane frame (1) and / or of the membrane plate (3) inserted, and (with the membrane frame are 1) or membrane plate (3) is welded, riveted or glued.
3. Saugpumpenaggregat according to any one of claims 1 or 2, wherein six to twelve, preferably nine connecting elements (15, 15 ', 15 ") are present.
4. Saugpumpenaggregat enforce according to any one of claims 1 to 3, wherein the connecting elements (15, 15 ', 15 "), the pump diaphragm (2) exclusively in its outer edge region.
5. according to any one of claims 1 to 4, wherein the diaphragm cover (3) has a Saugpumpenaggregat approximately completely over the entire surface of uniform thickness.
6. Saugpumpenaggregat according to any one of claims 1 to 5, wherein the connecting elements (15, 15 ', 15 ") pins or snap elements
7. Saugpumpenaggregat according to any one of claims 1 to 6 wherein at least some of the connecting elements (15, 15 ', 15 ") on the membrane frame (1) are arranged.
8. Saugpumpenaggregat according to one of claims 1 to 7, wherein at least some of the connecting elements (15, 15 ', 15 ") are arranged on the membrane lid (3).
9. Saugpumpenaggregat according to any one of claims 1 to 8, wherein the diaphragm cover (3) and membrane frame (1) are made of a plastic material and the connecting elements (15, 15 ', 15 ") integral with the diaphragm cover (3) or the membrane frame (1) are connected.
10. Saugpumpenaggregat according to any one of claims 1 to 9, wherein at least part of the connecting elements (15, 15 ', 15 ") are provided with longitudinal ribs.
11. Saugpumpenaggregat according to any one of claims 1 to 10, wherein at least part of the connecting elements (15, 15 ', 15 ") are provided with a positioning aid.
12. Saugpumpenaggregat according to any one of claims 1 to 11, wherein the diaphragm cover (3) and / or the membrane frame (1) büchsenformige receptacles (35, 35% 35 ") for receiving the connecting elements (15, 15 ', 15") have. D
13. Saugpumpenaggregat according to claim 12, wherein the sleeve-shaped Aumah- men (35, 35 ', 35 ") by ribs (38) are connected together.
14. Saugpumpenaggregat according to any one of claims 12 or 13, wherein the up measures (35, 35 ', 35 ") has a non-circular, particularly a polygonal
have cross-section.
15. Saugpumpenaggregat according to any one of claims 1 to 14, wherein said diaphragm plate (20) inlet and discharge valve flaps (23, 24) and on one side of a first sealing lip (22), wherein the sealing lip (22) the diaphragm piston
(21) rotates completely and the intake and discharge valve flaps (23, 24) within one of the sealing lip (22) enclosed area are located and wherein the connecting elements (15, 15 ', 15 ") the diaphragm plate (20) outside this peripheral sealing lip (22) prevail.
16. Saugpumpenaggregat according to claim 15, wherein said diaphragm plate (20) on the opposite side of the first sealing lip (22) cooperating second sealing lip (28) which also has the diaphragm piston (21) and the intake and discharge valve flaps (23, 24 ) surrounds.
17. Saugpumpenaggregat according to claim 16, wherein the first and second sealing lip (22, 28) are congruent.
18. Saugpumpenaggregat according to any one of claims 1 to 17, wherein the pump diaphragm (2) is integrally formed of a flexible material.
19. Membransaugpumpenaggregat with a rigid membrane frame (1), a rigid one-piece diaphragm cover (3) having a pumping chamber (31) having a bottom portion and a ground area encircling and extending from the bottom portion outwardly flared side wall (36), and with a integral pump diaphragm (2) which has a diaphragm plate (20), a flexible diaphragm piston (21), at least one inlet valve (23) and at least one discharge valve (24), said diaphragm plate (20) between the membrane frame (1) and the diaphragm cover (3) and membrane frame (1), the pump diaphragm (2) and the membrane lid (3) by means of connecting elements (15, 15 ', 15 ") are connected in a predetermined position to each other together, the diaphragm piston (21) the
Membrane frame (1) penetrates, and wherein the diaphragm piston (21) overlying a pump chamber (31) of the membrane lid (3), characterized in that more than three connecting elements (15, 15 ', 15 ") are present.
20. Membransaugpumpenaggregat with a rigid membrane frame (1), a rigid one-piece diaphragm cover (3) having a pumping chamber (31) having a bottom portion and a ground area encircling and extending from the bottom portion outwardly flared side wall (36), and with a integral pump diaphragm (2) including a diaphragm plate
(20), a flexible diaphragm piston (21), at least one inlet valve (23) and at least one discharge valve (24), wherein the diaphragm plate (20) is arranged between the membrane frame (1) and the membrane lid (3) and membrane frame (1 ), the pump diaphragm (2) and Membrande- ekel (3) by means of connecting elements (15, 15 ', 15 ") are connected in a predetermined position to each other together, the diaphragm piston (21) passes through the membrane frame (1) and said diaphragm piston (21 ) overlying a pump chamber (31) of the membrane lid (3), characterized in that the connecting elements (15, 15 ', 15 ") form a material and / or form fit.
21. Membransaugpumpenaggregat with a rigid membrane frame (I) 5 a rigid integral diaphragm cover (3) having a pumping chamber (31) having a bottom portion and a ground area encircling and extending from the bottom portion outwardly flared side wall (36), and with a integral pump diaphragm (2) which has a diaphragm plate (20), a flexible diaphragm piston (21), at least one inlet valve (23) and at least one discharge valve (24), said diaphragm plate (20) between the membrane frame (1) and the diaphragm cover (3) and membrane frame (1), the pump diaphragm (2) and Membrande- ekel (3) by means of connecting elements (15, 15 ', 15 ") are connected in a predetermined position to each other together, the diaphragm piston (21), the membrane frame ( 1) penetrates, and wherein the diaphragm piston (21) overlying a pump chamber (31) of the membrane lid (3), characterized in that the membrane lid (3) approximately vol lständig having over its entire surface uniform thickness.
22 Saugpumpenaggregat according to claim 21, wherein the diaphragm cover (3) facing away from the pump diaphragm (2) having bottom which is formed patterned off.
EP08706385A 2007-03-13 2008-03-04 Vacuum diaphragm pump unit Withdrawn EP2129915A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH4052007 2007-03-13
PCT/CH2008/000086 WO2008110022A2 (en) 2007-03-13 2008-03-04 Vacuum diaphragm pump unit

Publications (1)

Publication Number Publication Date
EP2129915A2 true EP2129915A2 (en) 2009-12-09

Family

ID=38910890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08706385A Withdrawn EP2129915A2 (en) 2007-03-13 2008-03-04 Vacuum diaphragm pump unit

Country Status (12)

Country Link
US (1) US20100086419A1 (en)
EP (1) EP2129915A2 (en)
JP (1) JP2010520962A (en)
KR (1) KR20090118065A (en)
CN (1) CN101636585B (en)
AU (1) AU2008226308A1 (en)
BR (1) BRPI0808211A2 (en)
CA (1) CA2679865A1 (en)
MX (1) MX2009009807A (en)
RU (1) RU2472967C2 (en)
TW (1) TW200900586A (en)
WO (1) WO2008110022A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9084845B2 (en) 2011-11-02 2015-07-21 Smith & Nephew Plc Reduced pressure therapy apparatuses and methods of using same
US9227000B2 (en) 2006-09-28 2016-01-05 Smith & Nephew, Inc. Portable wound therapy system
US9427505B2 (en) 2012-05-15 2016-08-30 Smith & Nephew Plc Negative pressure wound therapy apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2930396A1 (en) * 2013-11-15 2015-05-21 Ivenix, Inc. Pump chamber including internal surface modifications
CN104712535B (en) * 2014-11-05 2016-11-16 东莞市天昶机电制造有限公司 A kind of noise reduction compressor for medical vaporizer
JP2016200014A (en) * 2015-04-07 2016-12-01 住友ゴム工業株式会社 Diaphragm Pump
CH711436A1 (en) * 2015-08-20 2017-02-28 Medmix Systems Ag Diaphragm pump with medium separation.

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3424091A (en) * 1966-10-03 1969-01-28 Tillotson Mfg Co Fuel pump for charge forming apparatus
US3556687A (en) * 1969-05-21 1971-01-19 Walbro Corp Fuel pump for small engines
US4168288A (en) * 1978-06-29 1979-09-18 Briggs & Stratton Corporation Combined carburetor and impulse fuel pump
US4303376A (en) * 1979-07-09 1981-12-01 Baxter Travenol Laboratories, Inc. Flow metering cassette and controller
US4411603A (en) * 1981-06-24 1983-10-25 Cordis Dow Corp. Diaphragm type blood pump for medical use
JPS6194295U (en) * 1984-11-28 1986-06-18
US4886494A (en) * 1987-04-09 1989-12-12 Yasuo Morifuji Milking apparatus
US4929229A (en) * 1988-11-30 1990-05-29 Isg/Ag Breastpump having improved valve mechanism
US5190527A (en) * 1989-09-25 1993-03-02 Baxter International Inc. Intravenous metering device
US5098262A (en) * 1990-12-28 1992-03-24 Abbott Laboratories Solution pumping system with compressible pump cassette
US5476367A (en) * 1994-07-07 1995-12-19 Shurflo Pump Manufacturing Co. Booster pump with sealing gasket including inlet and outlet check valves
CH688811A5 (en) * 1995-05-26 1998-04-15 Trimed Ag Breast pump.
US6699213B1 (en) * 1995-08-03 2004-03-02 Medela Holding Ag Diaphragm pump protection device for a breastpump
US6139521A (en) * 1996-06-03 2000-10-31 Medela Holding Ag Breastpump having particular application as a small motorized pump capable of double-breast pumping
EP1527791B1 (en) * 1997-02-26 2007-09-26 Medela Holding AG Fluid suction device
US6090065A (en) * 1998-07-06 2000-07-18 Evenflo Company, Inc. Self-cycling breast pump
US6045529A (en) * 1998-10-02 2000-04-04 Nuesch Logistik Drive unit for a breastpump
JP3834745B2 (en) * 1999-05-11 2006-10-18 応研精工株式会社 Small pump
US6706012B2 (en) * 2000-06-12 2004-03-16 L. Jason Clute Apparatus for expressing milk
US6443713B1 (en) 2000-10-18 2002-09-03 Thomas Industries Inc. Diaphragm pump with support ring
DE50112760D1 (en) * 2001-01-02 2007-09-06 Medela Holding Ag Diaphragm pump
US7322801B2 (en) * 2003-08-26 2008-01-29 Thomas Industries Inc. Compact linear air pump and valve package
CN2675900Y (en) 2004-01-12 2005-02-02 泓记精密股份有限公司 Combined structure improved inflating pump
JP4465227B2 (en) * 2004-06-03 2010-05-19 日本電産サンキョー株式会社 Pump device
US20050287007A1 (en) * 2004-06-28 2005-12-29 Leonhard Todd W Foam encased pump
ES2358083T3 (en) * 2004-09-20 2011-05-05 Medela Holding Ag Suction pump with a ventilation valve.
US8449267B2 (en) * 2004-09-29 2013-05-28 Shurflo, Llc Pump assembly and fluid metering unit
CN100406731C (en) 2005-03-10 2008-07-30 张坤林 Vacuum pump capable of block
US8197231B2 (en) * 2005-07-13 2012-06-12 Purity Solutions Llc Diaphragm pump and related methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008110022A2 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9227000B2 (en) 2006-09-28 2016-01-05 Smith & Nephew, Inc. Portable wound therapy system
US9642955B2 (en) 2006-09-28 2017-05-09 Smith & Nephew, Inc. Portable wound therapy system
US10130526B2 (en) 2006-09-28 2018-11-20 Smith & Nephew, Inc. Portable wound therapy system
US9084845B2 (en) 2011-11-02 2015-07-21 Smith & Nephew Plc Reduced pressure therapy apparatuses and methods of using same
US10143783B2 (en) 2011-11-02 2018-12-04 Smith & Nephew Plc Reduced pressure therapy apparatuses and methods of using same
US9427505B2 (en) 2012-05-15 2016-08-30 Smith & Nephew Plc Negative pressure wound therapy apparatus
US9545465B2 (en) 2012-05-15 2017-01-17 Smith & Newphew Plc Negative pressure wound therapy apparatus
US10299964B2 (en) 2012-05-15 2019-05-28 Smith & Nephew Plc Negative pressure wound therapy apparatus

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WO2008110022A2 (en) 2008-09-18
US20100086419A1 (en) 2010-04-08
AU2008226308A1 (en) 2008-09-18
BRPI0808211A2 (en) 2014-07-01
CN101636585A (en) 2010-01-27
TW200900586A (en) 2009-01-01
MX2009009807A (en) 2009-09-24
JP2010520962A (en) 2010-06-17
CA2679865A1 (en) 2008-09-18
CN101636585B (en) 2012-02-22
KR20090118065A (en) 2009-11-17
RU2009136224A (en) 2011-04-20
WO2008110022A3 (en) 2008-11-06
RU2472967C2 (en) 2013-01-20

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