EP3408535A1 - Membranverdichter - Google Patents
MembranverdichterInfo
- Publication number
- EP3408535A1 EP3408535A1 EP16805854.3A EP16805854A EP3408535A1 EP 3408535 A1 EP3408535 A1 EP 3408535A1 EP 16805854 A EP16805854 A EP 16805854A EP 3408535 A1 EP3408535 A1 EP 3408535A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- compressor
- drive shaft
- crank
- piston rod
- 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.)
- Granted
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000012528 membrane Substances 0.000 claims description 65
- 239000007789 gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
-
- 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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
Definitions
- the invention relates to a membrane compressor with an electric motor having a drive shaft, motion transmission means, which are displaceable by the drive shaft in motion, and via which a rotational movement of the drive shaft is convertible, a piston rod which is coupled to an output member of the motion transmission means and with a membrane and a compressor space, which is bounded by the membrane and a compressor head and whose volume is variable by the movement of the membrane.
- Such membrane compressors or diaphragm pumps are used for gas or liquid conveying, in particular in areas where the fluid has harmful influences on the compressor or the pump or its components, in particular bearings, motors and the like and a leakage to the environment are completely prevented should.
- both sewage sludge and fuels or exhaust gases from internal combustion engines and oil-mist-laden air can be promoted with such membrane compressors.
- one-stage and multi-stage membrane compressors are known.
- diaphragm pumps which operate essentially on the principle of a piston compressor whose piston rod is moved up and down, wherein the pump space is limited instead of by a piston through the membrane, which is moved by the piston rod.
- the problem is the conversion of the purely rotary movement into a desired movement of the piston rod.
- the piston rod is then guided in a tumbling motion, which, however, leads to a reduced durability of the membranes by the resulting additional flexing work.
- Additional flexing work is understood to mean the rolling and tensioning of the membrane, which does not contribute to the actual pumping effect, but rather arises due to the asymmetrical deformation of the membrane towards the central axis of the piston rod.
- GB 2 282 419 A describes a diaphragm pump which is driven by an electric motor and a downstream worm gear.
- the membrane is secured to the end of a clip whose opposite end is attached to an eccentrically guided bearing so that the membrane wobbles.
- At the compressor head there are an inlet channel and an outlet channel, in each of which sheet-shaped check valves are arranged.
- EP 1 477 676 B1 discloses a diaphragm pump which is driven by an electric motor which is connected via a planetary gear with an eccentric, which drives the membrane, so that here also creates a detrimental additional flexing work by the tumbling motion.
- the known diaphragm pumps have the disadvantages that an undesirable increased wear due to the uneven loading of the membrane is unavoidable, since this is repeatedly driven due to the tumbling motion occurring.
- the structure and construction of the known diaphragm pumps or membrane compressors are very expensive, so that increased assembly and manufacturing costs. It is therefore the object to provide a membrane compressor, with which an increased life of the membrane is achieved by the occurring load on the membrane is reduced or avoided by the additional harmful flexing. This should also save energy by converting as much energy as possible into pumping work.
- the design of the membrane compressor should be as simple as possible in order to reduce manufacturing and assembly costs.
- the space of the compressor housing should be able to be used as completely as possible for the pumping work.
- the movement transmission means are formed by a planetary gear
- the output member is designed as a crank whose input shaft is guided eccentrically to the axis of rotation of the drive shaft and the output shaft to the input shaft has an axial offset corresponding to the eccentricity of the input shaft to the axis of rotation of the drive shaft, it becomes possible To convert the rotational movement of the drive shaft in a purely translational movement of the piston rod to drive the membrane.
- the additional harmful flexing of the membrane can be significantly reduced or prevented, since no wobbling movement of the piston rod occurs by which the membrane is rolled on the one hand and on the other hand stretched. Accordingly, the life of such a compressor is significantly increased.
- the epicyclic gear has a fixed ring gear meshing with a gear formed on the input shaft of the crank formed at the opposite end to the output shaft of the crank. Accordingly, the input shaft of the crank rolls in the ring gear, thereby reliably the movement of the drive shaft is transmitted to the input shaft of the crank.
- the output shaft of the crank performs an exclusively translational movement and thus no harmful flexing of the membranes is performed, corresponds to the center distance of the axis of rotation of the drive shaft to the central axis of the output shaft of the crank the pitch circle diameter of the ring gear, whereby the drive correct for Lever of the crank is designed and so on the one hand prevents jamming and on the other hand, a steady engagement of the gear of the input shaft is secured to the ring gear.
- a rotor is formed, which has an eccentric to the axis of rotation of the drive shaft formed receiving opening in which the input shaft of the crank is mounted. In this way, a reliable and durable and central bearing of the crank is generated, which can be rotated accordingly with little effort on their circular path.
- the rotor is mounted in a compressor housing, on which the compressor head is formed, in which the membrane is mounted over its outer periphery. Additional housing parts for the storage of the rotor are therefore not required. A swinging of the rotor due to transverse forces can be prevented, whereby the life of the diaphragm compressor increases. In addition, the assembly costs and the manufacturing costs are reduced.
- a respective compressor head is formed on the compressor housing on opposite sides, in each of which a membrane over their Outer circumference is fixed and the membranes are attached to opposite ends of the piston rod via its inner circumference.
- a compressor is provided with two compressor compartments work in opposite directions, so that a constant pressure is provided.
- the axis of movement of the piston rod is arranged perpendicular to the axis of rotation of the electric motor, whereby only a small space is required, since a small-sized transmission can be used.
- the output shaft of the crank is rotatably mounted on the piston rod.
- the relative movement of the output shaft to the piston rod is carried out correspondingly with very little friction, whereby the force required to transmit motion is reduced.
- the piston rod has a transverse bore in which the output shaft of the crank is mounted via a bearing. An additional guidance of the piston rod can be completely dispensed with. In this way, a particularly small-sized and easily assembled unit with reduced manufacturing costs is created.
- crank is mounted via roller bearings, in particular via needle bearings, in the recess of the rotor and the transverse bore of the piston rod, since frictional forces are largely avoided.
- an inlet with a non-return valve opening in the direction of the compressor chamber and an outlet with a non-return valve closing in the direction of the compressor chamber are formed on the compressor head.
- These valves can be pre-attached to the pump heads assemble and secure in a simple manner a closing of the outlet during the suction movement and a closing of the inlet during the ejection movement of the membrane.
- a membrane compressor which can be manufactured inexpensively because the number of components is reduced and the assembly is significantly simplified. Above all, however, the harmful flexing work on the membranes is prevented by preventing a wobbling movement of the piston rod, which is moved purely translationally, so that the drive energy can be completely converted into pumping work. Thus, the energy is saved and increases the life of the membrane compressor compared to known designs.
- Figure 1 shows a side view of a membrane compressor according to the invention in a sectional view.
- Figure 2 shows a section of the membrane compressor of Figure 1 along the line C-C.
- FIG. 3 shows a section of the membrane compressor from FIG. 1 along a section along the line H-H.
- Figure 4 shows a perspective view of the crank and the rotor of the membrane compressor shown in Figure 1.
- the membrane compressor according to the invention has an electric motor 10 with an internal rotor 12 and a radially outer stator 14.
- the stator 14 is fixed to an inner side of a motor housing 16 and acts in a known manner with that on a drive shaft 18 of the electric motor 10 fixed rotor 12 together.
- the drive shaft 18 and with this the rotor 12 are rotatably mounted in the motor housing via two ball bearings 20, 22.
- the electric motor 10 is controlled via a control unit 24, which is formed in a housing space 26 at one axial end of the motor housing 16 and is closed by a cover 28.
- a compressor housing 30 is fixed to the axial end, from which the drive shaft 18 projects, in which the drive shaft 18 or a fixed to the drive shaft 18 or integrally manufactured with this runner 32, via a needle bearing 34 in the compressor housing 30 is stored.
- This rotor 32 has an eccentric to the axis of rotation of the drive shaft 18 formed receiving opening 36 in which an input shaft 48 serving as an output member 40 crank 42 of a planetary gear 44 is mounted via a needle bearing 46, wherein the crank 42 from the input shaft 48 and an eccentric thereto arranged output shaft 38 is composed.
- a gear 50 is fixed on the input shaft 48 of the crank 42.
- This gear 50 meshes with a ring gear 52, which in the compressor housing 30, the drive shaft 18 surrounding, is arranged and forms the epicyclic gear 44 with the gear 50.
- the receiving opening 36 of the rotor 32 extends correspondingly also in an end portion of the drive shaft 18 so that it is open on one side radially. Through this opening 54, the teeth of the gear 50 of the crank 42 engage in the teeth of the ring gear 52.
- the crank 42, the gears 50, 52 and the rotor 32 are used accordingly as motion transmission means.
- the axial offset A of the crank 42 corresponds to the eccentricity E of the axis of rotation of the drive shaft 18 to the axis of rotation of the input shaft 48 of the crank 42 Pitch 42 of the ring gear 52 the maximum center distance of the axis of rotation of the drive shaft 18 to the central axis of the output shaft 38.
- the crank 42 is then introduced in a position in which on the one hand the input shaft 48 and on the other hand, the output shaft 38 has a maximum distance from the axis of rotation of the drive shaft 18.
- the translational movement of the center axis of the output shaft 38 is then along a distance vector from the axis of rotation of the drive shaft 18 to the central axis of the output shaft 38 in this state.
- a needle bearing 55 is again arranged, which is arranged in a centrally disposed transverse bore 56 of a piston rod 58 which reciprocates upon rotation of the electric motor 10 according to the straight line described by the translational movement of the output shaft 38.
- the compressor housing 30 has two opposite through holes 60, 62, through which the piston rod 58 extends and from which the compressor housing 30 widens outwardly in a substantially annular manner, wherein both extensions 64, 66 are closed by a cover 68, 70 and with the covers 68, 70 each form a compressor head 76, 78.
- a respective membrane 72, 74 is fixed with its inner circumference, while the outer periphery of the membranes 72, 74 between the axial ends of the respective axial end of the extensions 64, 66 of the compressor housing 30 and the associated lid 68, 70th is trapped.
- a compressor chamber 80, 82 is formed, which is reduced in size and enlarged upon movement of the piston rod 58 and thus the membranes 72, 74.
- an inlet 84, 86 and an outlet 88, 90 are formed, in each of which a check valve 92, 94, 96, 98 is arranged.
- the check valves 92, 96 in the inlets 84, 86 open corresponding to the compressor chamber 80, 82 and block outflow from the inlets 84, 86 while the check valves 94, 98 in the outlets 88, 90 prevent flow into the compressor chamber 80, 82 by closing the outlet 88, 90 and instead exiting allow the compressor chamber 80, 82 by opening the outlet 88, 90 in this direction.
- the membranes Due to the fact that the rotary drive of the drive shaft is completely converted into a purely translational movement of the piston rod by the inventively designed epicyclic gear with the rotor and the crank, which serve as motion transmission means, the membranes are fully symmetrical loaded to the central axis of the piston rod. This means that the movement work of the membranes is completely converted into compressor work. An unnecessary flexing work on the membranes, which has an energetic negative effect, is completely prevented, whereby they have a much longer life.
- the membrane compressor is easy to assemble and manufacture, so that costs can be reduced over known membrane compressors. It also results in a very low dead volume of the compressor, which is very compact to produce.
- the unit of drive shaft and rotor can be made in any part and assembled.
- other bearings may be used or the compressor may be designed with only one compressor head.
- membrane compressors are also designed as a multi-stage compressor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016101479.6A DE102016101479A1 (de) | 2016-01-28 | 2016-01-28 | Membranverdichter |
| PCT/EP2016/079819 WO2017129295A1 (de) | 2016-01-28 | 2016-12-06 | Membranverdichter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3408535A1 true EP3408535A1 (de) | 2018-12-05 |
| EP3408535B1 EP3408535B1 (de) | 2020-01-29 |
Family
ID=57482446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16805854.3A Active EP3408535B1 (de) | 2016-01-28 | 2016-12-06 | Membranverdichter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3408535B1 (de) |
| DE (1) | DE102016101479A1 (de) |
| WO (1) | WO2017129295A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11434902B2 (en) * | 2019-03-11 | 2022-09-06 | Ingersoll-Rand Industrial U.S., Inc. | Electric diaphragm pump with offset slider crank |
| CN113530800B (zh) * | 2021-08-30 | 2023-08-01 | 佛山市卓展电器科技有限公司 | 冲牙器用泵水结构 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT8221152U1 (it) * | 1982-03-16 | 1983-09-16 | Gaspardo Spa | Biellismo in particolare per falciatrici. |
| DE4008459A1 (de) * | 1990-03-16 | 1991-09-19 | Bosch Gmbh Robert | Doppelmembranpumpe |
| GB9320342D0 (en) | 1993-10-02 | 1993-11-24 | Munster Simms Engineering Limi | Diaphragm pump |
| DE4443778A1 (de) * | 1994-12-08 | 1996-06-20 | Abel Gmbh & Co | Doppelmembranpumpe |
| DE50301675D1 (de) | 2003-05-15 | 2005-12-22 | Grundfos As | Dosierpumpe |
| CN101285461A (zh) * | 2007-04-10 | 2008-10-15 | 张纪永 | 小流量泵 |
| DE102009054941A1 (de) * | 2009-12-18 | 2011-06-22 | Continental Teves AG & Co. OHG, 60488 | Motor-Pumpenaggregat |
| DE202012000781U1 (de) * | 2012-01-26 | 2012-03-15 | Peter Helwig | Mechanische Baueinheit für die Umwandlung von einer translatorischen in eine rotatorische, als auch umgekehrt von einer rotatorischen in eine translatorische Bewegung mit der Innovation, dass nur die Linearachsen eine translatorische, oszillierende Bewegung ausführen und die Wandlung in eine Drehbewegung nur über rotatorisch, mit konstanter Winkelgeschwindigkeit laufender Maschinenelemente realisiert wird. Gewählte Benennung der mechanischen Baueinheit: "Hohlradtrieb" |
| DE102015006964B4 (de) * | 2014-07-09 | 2017-08-17 | Arnold Schulze | Vorrichtung nach dem Prinzip einer Hypozykloiden-Geradführung |
-
2016
- 2016-01-28 DE DE102016101479.6A patent/DE102016101479A1/de not_active Ceased
- 2016-12-06 EP EP16805854.3A patent/EP3408535B1/de active Active
- 2016-12-06 WO PCT/EP2016/079819 patent/WO2017129295A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016101479A1 (de) | 2017-08-03 |
| WO2017129295A1 (de) | 2017-08-03 |
| EP3408535B1 (de) | 2020-01-29 |
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