EP3449127A1 - Household appliance - Google Patents
Household applianceInfo
- Publication number
- EP3449127A1 EP3449127A1 EP17717684.9A EP17717684A EP3449127A1 EP 3449127 A1 EP3449127 A1 EP 3449127A1 EP 17717684 A EP17717684 A EP 17717684A EP 3449127 A1 EP3449127 A1 EP 3449127A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eccentric screw
- drive shaft
- screw pump
- appliance according
- drive
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
- A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids
Definitions
- the present invention relates to a household appliance, in particular a washing machine or a dishwasher.
- Metering pumps for fluids, in particular for liquid detergent, of interest to be used as a metering system in household appliances.
- Dosage systems are known in different variants, such as volume pumps (gear pumps, peristaltic pumps, or piston pumps). Also known are so-called progressing cavity pumps, which are commonly used for many purposes.
- so-called Archimedean screws are known which have only a single moving part in snail shape, but no
- Eccentric screw pump removes from a container and one or more commercial washing machines supplies, with a free-flowing
- Detergent concentrate used and the detergent concentrate with a stationarily arranged in the container sampling line and with a stationary as well
- a paste container with removal device consisting of a cylinder open to one side and a arranged on the open side of the cylinder movable, tight closing follower plate and a removal device for removal and transport of the paste
- a motor with gearbox is located at the center of the follower plate protruding axis a Laflugeliger stirring propeller is mounted such that it can rotate freely below the follower plate freely in the paste
- Removal device is connected to the follower plate outside the center and above the area swept by the stirring propeller and transported the paste to a metering device.
- a disadvantage of the known prior art is that the metering pumps must be made relatively complex and expensive, since they have a large number of individual components which must each be mounted and arranged to a functional state.
- the present invention has for its object to propose a simple and inexpensive metering pump, which - apart from a drive - has only a single moving part and is suitable for conveying liquid auxiliaries or fluids in a washing machine or dishwasher.
- the object is achieved by means of a household appliance with a
- the eccentric screw pump comprises a stator and a movable rotor which is associated with the stator, wherein the rotor has an eccentric screw and a drive shaft for driving the eccentric screw, wherein the drive shaft is flexible and integral with the eccentric screw.
- the drive shaft has at least two pairs of bending hinges.
- At least two pairs of bending hinges of the drive shaft are each arranged orthogonal to each other.
- the orthogonal arrangement of the bending hinges provides a good force balance between the hinges and a minimization of the bending force, while also the friction between the bending hinges can be reduced.
- a 120 ° or 60 ° angular offset can be used when using 3 pairs of bending hinges.
- the drive shaft is arranged in an enveloping tube which is designed as a riser pipe for a fluid to be conveyed.
- the drive shaft is completely surrounded by the fluid rising through the cladding tube, whereby no additional
- Delivery channels or flow paths for the ascending fluid must be provided.
- the rotor is arranged inside the cladding tube.
- the Drive shaft integrally formed, wherein both the drive shaft and the eccentric screw can be arranged within the same. This additionally reduces the manufacturing costs, the assembly or the
- the cladding tube has a bearing to support the drive shaft in the eccentric screw pump.
- the bearing is as a gap or
- Labyrinth seal formed This has the technical advantage that the seal can also be formed as part of the bearing.
- the design as a gap or labyrinth seal is presently quite sufficient for the purpose, since the seal is not exposed to any appreciable pressure of the fluid to be delivered in the cladding tube.
- the cladding tube is integrally formed.
- the eccentric screw pump has a drive for driving the rotor.
- the drive engages directly to the drive shaft or is connected to this and via the operation of the drive, the drive shaft and on the
- the eccentric screw pump Connecting element which is adapted to connect the drive shaft to the drive.
- connecting element This allows, for example, the replacement of the drive without having to solve other components or elements of the eccentric screw pump, as a simple arrangement and power transmission can be realized via the connecting element.
- the connecting element is designed as a conically tapered worm drive.
- the technical advantage can be realized that an offset or an existing imprecision in the orientation of the drive shaft relative to the drive can be compensated via the conically tapered design of the connecting element during insertion or withdrawal of the eccentric screw pump.
- Connecting element can be exerted a pulling force on the eccentric screw pump to arrange them within the household appliance in the right space provided.
- the eccentric screw pump to a container for storing a fluid, wherein the eccentric screw pump is designed as a submersible pump introduced into the container.
- the container can be made removable from the household appliance.
- a user or an operator of the household appliance it is thus feasible for a user or an operator of the household appliance to be able to remove the container, including the eccentric screw pump, from the domestic appliance in order to fill it with fresh fluid or with fresh liquid detergent.
- the drive it would be conceivable, for example, for the drive to remain in the domestic appliance and only for the eccentric screw pump, including the drive shaft of the screw and that inside the cladding tube arranged eccentric screw together with the container can be removed.
- the container, including the eccentric screw pump is reinserted into the container
- the conically tapered connecting element is in this case realized that the drive and the drive shaft precisely engage with each other, the conical taper allows increased tolerance with respect to the arrangement of the eccentric screw pump together with the surrounding the progressing cavity pump container in the household appliance.
- the eccentric screw pump has an outlet, which is arranged above a maximum fill level of the container. This makes it possible, for example, that during operation of the
- Fig. 1 is a schematic representation of a movement of a
- 2a is a schematic representation of a drive shaft with joint arrangement
- Fig. 2b shows a further schematic representation of a drive shaft
- 3 is a schematic representation of a drive shaft with eccentric screw
- 4 is a schematic representation of a cladding tube with outlet
- Fig. 6 is a schematic representation of an extracted
- Fig. 7 shows a further schematic representation of an eccentric screw
- FIG. 8 is a schematic representation of a conically tapered worm drive
- Fig. 9a is a perspective view of a rotor with a spring bar shaft
- 9a is a further perspective view of the rotor of FIG.
- FIG. 1 shows a schematic representation of a movement of an eccentric screw 105.
- the eccentric worm 105 executes a further movement superimposed on this rotation on a cylinder jacket.
- the isolated rotational movement is shown in Fig. 1 by the circular path in the x-y plane.
- the rolling movement superimposed on the rotational movement causes a resulting movement of the eccentric screw 105, which is characterized in FIG. 1 by the plurality of individual arrows on the circular path.
- Preferred here is a construction based on a 2: 1 hypocycloids, in which the rotational frequencies are opposite and give the same amount. Other cycloid constructions may give different ratios, but typically integer ones
- Offset to be compensated for the rotor can be determined by constructive measures about 5% of the length of the torque transmitted part of the shaft or the drive shaft. For example, in the present case a parallel axial offset of 1 mm to a length of the drive shaft of 20 mm would be conceivable.
- FIG. 2a shows a schematic representation of a drive shaft 109
- the drive shaft 109 is shown in Figure 2a in a first view, wherein a first pair of bending hinges 1 1 1 each by a
- Constriction of the diameter of the drive shaft 109 is realized.
- the narrowing of the diameter results in a reduced area moment of inertia of the drive shaft 109 at these correspondingly narrowed points, which is realized by the formation of the drive shaft 109 of an elastic material.
- the drive shaft 109 is shown under a rotated by 90 ° angle, with another pair of bending hinges 1 1 1 by a local constriction of the
- the joint arrangements can be arranged to accommodate the axial offset as elastic plastic joints directly to the preferably made of plastic eccentric screw 105.
- the two pairs of bending hinges 1 1 1 are each arranged orthogonal to each other, each pair of two mutually parallel bending hinges 1 1 1 allows to realize a misalignment in a plane.
- Biegescharnieren 1 1 which is arranged orthogonally to the first pair, allows compensation of an axial offset in a plane perpendicular to the first plane.
- the respective orthogonal bending hinge pair can also be arranged one behind the other. The proposed sequential arrangement, instead of the
- FIG. 2b shows a further schematic representation of a drive shaft 109 with a joint arrangement.
- the illustration of Figure 2b shows the drive shaft 109 in an operating condition in which both an upper bending hinge 1 1 1 and a lower bending hinge 1 1 1 are slightly bent to compensate for the axial offset, starting from a drive 103 with respect to the eccentric screw 105 ,
- FIG. 3 shows a schematic representation of a drive shaft 109 with an eccentric screw 105.
- the drive shaft 109 includes in the present side view of a pair of bending hinges 1 1 1 and the eccentric screw 105 is located at a lower end of the drive shaft 109.
- FIG. 4 shows a schematic representation of a cladding tube 1 13 with an outlet 121st
- the cladding tube 1 13 of the drive shaft 109 also serves as a riser for a fluid to be conveyed and also serves as a connection device between the drive 103 and pump cell.
- the cladding tube 1 13 may also be referred to here as a stator 108 for the eccentric screw 105 and may preferably be formed in one piece. For manufacturing and assembly reasons, however, a multi-part design of the stator can be useful.
- the stator 108 and the cladding tube 1 13 united in the consequence of the functions
- FIG. 5 shows a schematic representation of an eccentric screw pump 101 with a container 1 19.
- the progressing cavity pump 101 is used as a submersible pump, ie it dips from above into the container 1 19 with the fluid to be metered.
- the outlet 121 of the eccentric screw pump 101 is higher than a highest
- Eccentric screw pump 101 is also provided above the highest fluid level. Thus, there are no below the level or the fluid level within the container 1 19 lying and passing through a container wall to the outside elements or components of the eccentric screw pump. Consequently, no components or elements must undergo a corresponding static or dynamic sealing and the entire system of the eccentric screw pump 101 is completely sealed by its technical training. This contributes in addition to a lower
- the eccentric screw pump 101 Reliability of the eccentric screw pump 101 can be significantly increased. Characterized in that the eccentric screw pump 101 is formed as a submersible pump, the eccentric screw 105 is at the lowest point of the container 1 19 and the entire
- Eccentric screw pump 101 does not need to be self-priming as a consequence.
- the eccentric screw pump 101 Due to the design of the eccentric screw pump 101 as a submersible pump as potential leaks can be taken, for example, at joints of the stator 108 or at joints between the drive shaft 109 and eccentric screw 105, since any leaking fluid can drip back into the sump or in the container 1 19. This would have, apart from small dosing errors, no serious impact on the functionality of the eccentric screw pump 101.
- a bearing must 1 15 for storing the drive shaft 109 may be tightly formed, however, this bearing 1 15 must exist only against the back pressure, which arises within the outlet 121.
- a simple gap or labyrinth seal is sufficient here.
- the eccentric screw pump 101 emerges from above in the container 1 19, as already mentioned, wherein the horizontal outlet 121 projects beyond an upper edge of the container 1 19 into a metering region of the domestic appliance 100. Consequently, there are no breakthroughs through the container wall below the maximum fluid level and the container 1 19 is thus sealed and can not leak even in case of failure or failure of individual components of the pump.
- the drive shaft 109 opens into a horizontally lying transmission element 106 in the form of a
- the horizontally located transmission element 106 in the form of a drive wheel has the overall advantage that it does not protrude very far up, whereby the entire removable eccentric screw pump 101 including the container 1 19 has a very good ratio of height to maximum filling level of the fluid.
- FIG. 6 shows a schematic representation of an extracted one
- Eccentric screw pump 101 with container 1 19 in a plan view in a plan view.
- the transmission element 106 is in the form of a
- the eccentric screw pump 101 is located with the entire container 1 19 in a pulled out of the household appliance 100 state.
- Embodiment is the household appliance 100 with the drive 103 and the
- Connecting element 104 in the form of a conically tapered screw educated. This allows a simple connection between the connecting element 104 and the transmission element 106, which is arranged at an upper end of the drive shaft 109. The occurring during the insertion or withdrawal of the container 1 19 rotation of the transmission element 106 above the drive shaft 109 and the thus direct connection to the drive shaft 109 can be used to generate a possibly necessary breakaway of the eccentric screw pump 101. This may be necessary, for example, when the eccentric screw pump 101 is solidified by dried residues of a fluid. Consequently, the length of the connecting element 104 is correspondingly greater than an engagement distance necessary for docking with the transmission element 106.
- the direction of rotation of the drive 103 and the eccentric screw pump 101 can be selected such that the connecting element 104 or the conically tapered worm exerts a pulling force on the container 1 19.
- the container 1 19 remains without additional safeguards such as
- Eccentric screw pump 101 including the fluid-carrying container 1 19 is ensured in the household appliance 100.
- FIG. 7 shows a further schematic representation of an eccentric screw pump 101 with container 1 19 in a plan view.
- the eccentric screw pump 101 and the container 1 19 are completely introduced into the domestic appliance 100.
- the rotor 102 or the eccentric screw 105 should be driven at a frequency that is significantly below typical engine speeds.
- an engine speed of at least a few 10 U / s and a pump speed or an eccentric screw pump speed of about 1 U / s would be regarded as typical values. For this reason it is suggested here, at the
- Drive shaft 109 to arrange a transmission element 106 which is driven by a drive 103 in communication with the connecting element 104. This can be done, for example, with a translation of 1: 10. This allows for the overall system of the eccentric screw pump 101 a favorable position of the individual components within the household appliance 100th Furthermore, it would be conceivable to provide the one-piece plastic joint or the drive shaft 109 with more than just two pairs of joints, which also in
- the drive shaft 109 could be formed in the form of a cylindrical coil spring, which preferably has a rectangular cross-section.
- FIG. 8 shows a schematic representation of a connecting element 104, which is designed as a conically tapered worm drive.
- FIGS. 9a and 9b each show a perspective view of a rotor 202 with a drive shaft 209 configured as a spring bar shaft, which is integral with the drive shaft 209
- Eccentric screw 205 is formed and an inventive alternative to the drive shaft 109 described above with the bending hinges 1 1 1 represents.
- the rotor 202 comprises a drive wheel 206 in addition to the essentially hollow-cylindrical spring bar shaft 209, a cylindrical seal member 206a and the eccentric screw 205 formed integrally with the spring bar shaft 209.
- the drive wheel 206 which as described above serves to couple the rotor 202 to a drive motor, is formed as a gear 206 having a plurality of teeth.
- an exemplary tooth of the drive wheel 206 is identified as tooth 206-1.
- Sealing element 206a connects the drive wheel 206 with the spring bar shaft 209 and serves to rotatably support the rotor 202 in the corresponding bearing 15 (see FIGS. 4 and 5) of the eccentric screw pump 101.
- the eccentric screw 205 is adapted to be received in the correspondingly shaped stator 108 of the eccentric screw pump 101 so as to be able to rotate relative to the stator 108 and thereby, for example, convey fluid out of the container 11.
- Spring bar shaft elements which are formed substantially identical to each other and along the longitudinal axis of the spring bar shaft 209 are arranged.
- FIG. 9a In a perspective view of FIG. 9a, three spring bar shaft elements 209a, 209b and 209c of the spring bar shaft 209 are exemplarily identified, which are, so to speak, the
- the spring bar shaft member 209a includes a first upper annular spring bar and a second lower annular spring bar, each extending in a plane perpendicular to the longitudinal axis of the spring bar shaft 209 in the circumferential direction about its longitudinal axis.
- the upper annular spring bar along the
- first annular spring bar and the second annular spring bar comprise
- Federstegwellenelements 209a each have a first lower semi-annular
- first semi-annular spring land portion is axially offset relative to the longitudinal axis of the spring land shaft 209 from the second semi-annular spring land portion with an axial offset that is less than the parallel offset between the first annular spring land and the second annular spring land.
- first half-ring-shaped spring bar section and the second half-ring-shaped spring bar section each define different planes which lie offset parallel to one another along the longitudinal axis of the spring bar shaft 209.
- annular spring bar of the spring bar shaft member 209a cohesively connected.
- the second upper semi-annular spring land portion of the first upper annular spring bar of the spring bar shaft member 209a is materially connected via a second axial connecting member 210a to the second upper semi-annular spring bar portion of the second lower annular spring bar of the spring bar shaft member 209a.
- the second axial connection element 210a may be relative to the longitudinal axis of the
- Federstegwelle 209 each be formed opposite the first axial connecting element 214a.
- the first axial connecting element 214a in each case via a radially extending central web material fit with the second axial
- This middle web serves, for example, to prevent an undercut during production of the spring bar shaft 209 by means of an injection molding process.
- the spring bar shaft element 209a is in each case connected via two third axial connecting elements 212a (on the basis of the perspective view)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016207249.8A DE102016207249B3 (en) | 2016-04-28 | 2016-04-28 | household appliance |
PCT/EP2017/058801 WO2017186495A1 (en) | 2016-04-28 | 2017-04-12 | Household appliance |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3449127A1 true EP3449127A1 (en) | 2019-03-06 |
EP3449127B1 EP3449127B1 (en) | 2020-02-12 |
Family
ID=58548693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17717684.9A Active EP3449127B1 (en) | 2016-04-28 | 2017-04-12 | Household appliance |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3449127B1 (en) |
CN (1) | CN109072905B (en) |
DE (1) | DE102016207249B3 (en) |
WO (1) | WO2017186495A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017215258A1 (en) * | 2017-08-31 | 2019-02-28 | BSH Hausgeräte GmbH | Laundry care device with a dosing module |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3324801A (en) * | 1965-08-17 | 1967-06-13 | Fernholtz Mfg Company | Combined flexible seal and agitator for pumps |
DE2139013C2 (en) * | 1971-08-04 | 1981-11-19 | Netzsch-Mohnopumpen Gmbh, 8672 Selb | Eccentric screw pump |
DE2458839A1 (en) * | 1974-12-12 | 1976-06-16 | Flux Geraete Gmbh | Spiral transport pump with eccentric rotor - has drive shaft with flexible plastics coated section to accommodate sideways movement of rotor |
DE4332850A1 (en) * | 1993-09-27 | 1995-03-30 | Henkel Ecolab Gmbh & Co Ohg | Paste container with removal device |
US5759019A (en) * | 1994-02-14 | 1998-06-02 | Steven M. Wood | Progressive cavity pumps using composite materials |
DE19813999C1 (en) * | 1998-03-28 | 1999-11-25 | Seepex Seeberger Gmbh & Co | Eccentric screw pump |
JP2000145660A (en) * | 1998-11-04 | 2000-05-26 | Shin Nippon Machinery Co Ltd | Uniaxial eccentric screw pump |
DE10212184A1 (en) * | 2002-03-20 | 2003-10-09 | Ecolab Gmbh & Co Ohg | Dosing solids-containing free-flowing detergent paste concentrates to industrial washing machines uses an eccentric screw pump |
DE102004060222A1 (en) * | 2004-12-15 | 2006-06-29 | Netzsch-Mohnopumpen Gmbh | Progressive cavity pump in compact design |
DE502006002188D1 (en) * | 2006-01-26 | 2009-01-08 | Grundfos Management As | Cavity Pump |
DE102010055018A1 (en) * | 2010-12-17 | 2012-06-21 | Hackforth Gmbh | Method for producing a coupling segment of an elastic coupling |
CN202228353U (en) * | 2011-09-23 | 2012-05-23 | 东营锐旭石油技术有限公司 | Double-journal flexible universal shaft |
ITTO20130690A1 (en) * | 2013-08-12 | 2013-11-11 | Stan Engineering Corp S R L | VOLUMETRIC DOSING PUMP WITH REMOTE OPERATION AND DOSER / DISPENSER SYSTEM INCLUDING AT LEAST ONE OF THE PUMPS. |
-
2016
- 2016-04-28 DE DE102016207249.8A patent/DE102016207249B3/en not_active Expired - Fee Related
-
2017
- 2017-04-12 WO PCT/EP2017/058801 patent/WO2017186495A1/en active Application Filing
- 2017-04-12 EP EP17717684.9A patent/EP3449127B1/en active Active
- 2017-04-12 CN CN201780025726.2A patent/CN109072905B/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3449127B1 (en) | 2020-02-12 |
CN109072905B (en) | 2020-08-04 |
CN109072905A (en) | 2018-12-21 |
WO2017186495A1 (en) | 2017-11-02 |
DE102016207249B3 (en) | 2017-08-24 |
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