EP0887122A2 - Wasser-Hochdruckreinigungsgerät - Google Patents
Wasser-Hochdruckreinigungsgerät Download PDFInfo
- Publication number
- EP0887122A2 EP0887122A2 EP98102583A EP98102583A EP0887122A2 EP 0887122 A2 EP0887122 A2 EP 0887122A2 EP 98102583 A EP98102583 A EP 98102583A EP 98102583 A EP98102583 A EP 98102583A EP 0887122 A2 EP0887122 A2 EP 0887122A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pinion
- pump
- pressure
- toothed ring
- cleaning device
- 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- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
-
- 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
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
-
- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
-
- 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
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/92—Surface treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/04—Composite, e.g. fibre-reinforced
Definitions
- the invention relates to a water high-pressure cleaning device with the features of The preamble of claim 1.
- Water high-pressure cleaning devices so-called high-pressure cleaners, are for the Hobby area and professional area known in a variety of embodiments.
- water high-pressure cleaning devices water in the pressure range between 60 and 250 bar, occasionally even at higher pressures, promoted to cleaning tasks to fulfill.
- the goal is always a high level of performance, that is to say a considerable level Pump performance with the lowest possible weight and low purchase price to realize.
- the invention has for its object the known water high-pressure cleaning device compared to the previously described state of the art in design to further improve the high pressure pump.
- Internal gear pumps have the same principle of operation as external gear pumps.
- the arrangement of the gears allows internal gear pumps a particularly compact design and overall very favorable installation dimensions.
- the combination of internal gear and external gear leads to a longer one Gear mesh than with external gear pumps. This results in a better one Sealing effect as well as larger suction and pressure angles.
- Internal gear pumps have due to the more favorable engagement conditions and the compact arrangement a lower noise level than external gear pumps. Particularly low flow and filling losses lead to a particularly good suction behavior. Finally, internal gear pumps have a relatively low one Fluctuation of the volume flow.
- an internal gear pump is a gerotor pump according to claim 2 the internally toothed toothed ring regularly has one tooth more than the toothed outside Pinion.
- the pressure chamber of a gerotor pump is different from that of a normal internal gear pump not separated from the suction chamber by a sickle-shaped filler.
- a special design of the teeth based on trochoid teeth ensures the seal between the internal toothed ring and the externally toothed pinion. With an adapted design of the teeth touch Tooth heads exactly opposite the point of mesh. The teeth roll on each other from. By touching the teeth in the pitch points, the individual Displacement rooms sealed against each other.
- the rolling motion of the gerotor pump is particularly suitable for use in a water high-pressure cleaning device, since there is hardly any sliding movement of the teeth occur on each other. That makes the choice of materials for the toothed ring and pinion Taking into account the corrosive effects of water a little easier.
- gerotor pump that is suitable for A gerotor pump is particularly suitable for a high-pressure water cleaning device with pinion driven by the drive shaft and entrained by the pinion Gear ring. If the internal toothed ring has one tooth more than the outside toothed pinion, the speed of the toothed ring is correspondingly lower than the speed of the pinion. The eccentricity of the pinion is with the gerotor pump permanently set.
- the cleaning water is supplied and removed axially.
- the pump housing is subjected to one side by a pressure field that does not change its position.
- the high-pressure cleaning device shown initially has a housing 1, one of which High-pressure hose 2 leads to a high-pressure cleaning lance 3.
- Such high-pressure cleaning devices Colloquially mostly called high pressure cleaners, are extensively commercial and used privately.
- Such pressure washers are used for the Cleaning of motor vehicles, floor panels, cladding, even with appropriate Additional equipment for land blasting.
- On the housing 1 of that shown in Fig. 1 High-pressure cleaning device for high-pressure water cleaning is a handle 5 attached, with the help of which the high-pressure cleaning device can be carried.
- a 2 only indicated drive device 6 in the illustrated and preferred embodiment an electric drive motor, with a drive shaft 7. From the drive device 6 is driven by a high pressure pump 8 for cleaning water or a water / detergent mixture, subsequently always as cleaning water designated.
- this high pressure pump 8 as an internal gear pump with internally toothed toothed ring 9 and externally toothed pinion 10 is.
- a normal internal gear pump needs a sickle-shaped filler for your Function that is between the moving toothed ring 9 and the moving Pinion 10 is located.
- a special type of internally toothed pumps are the so-called "gerotor pumps".
- the illustrated embodiment shows the preferred teaching as High-pressure pump 8 gerotor pump with internally toothed gerotor 9 and externally toothed pinion 10, the pinion 10 one tooth less than that Has toothed ring 9.
- Fig. 3 shows a view in the direction of the drive shaft 7 of toothed ring 9 and pinion 10, from which this fact arises.
- gerotor pump implemented according to preferred teaching is also general Part of the description has been explained in detail with regard to their properties. To avoid repetition, reference may also be made to these explanations here will.
- the invention For use in a water high-pressure cleaning device, the invention requires realized internal gear pump, in particular gear ring pump, equipment, in which the parts coming into contact with the cleaning water consist of a corrosion-resistant material, in particular a corrosion-resistant material Metal connection. Also ceramics, possibly also glass fiber reinforced Plastic can be used. This is also part of the general description have already been addressed.
- the gerotor pump the gerotor should 9 and the pinion 10 from a good sliding properties in water Material with sufficient surface hardness.
- Sintered materials in question, in particular sintered metal materials. According to preferred Teaching is provided that a sintered metal material with a plasma nitrided surface is used.
- the exemplary embodiment shown shows a particularly preferred embodiment in FIG. 3 a gerotor pump, namely a so-called gerotor pump with from the drive shaft 7 driven pinion 10 and rotating pinion entrained Toothed ring 9.
- a gerotor pump namely a so-called gerotor pump with from the drive shaft 7 driven pinion 10 and rotating pinion entrained Toothed ring 9.
- a slide bearing is rotatably mounted in the rotor housing 12.
- Fig. 3 shows the eccentric 13 carrying the pinion 10 on the drive shaft 7 with a Eccentricity.
- Fig. 4 shows an alternative, which is characterized in that the high pressure pump 8 is designed as an orbit pump driven by the drive shaft 7 Pinion 10, fixed ring gear 9 and a planetary movement of the Pinion 10 around the central axis of the toothed ring 9 allowing coupling between the drive shaft 7 and pinion 10.
- the pinion 10 passes through the an arrow drawn in an anti-clockwise direction is indicated by a planet-like one Movement around the central axis of the toothed ring 9 on a circular path with the radius e of eccentricity.
- Fig. 5 shows a further alternative, which is characterized in that the high pressure pump 8 is designed as an eccentric pump with an eccentric connection driven by the drive shaft 7, rotatably mounted on the eccentric connection Pinion 10 and fixed toothed ring 9.
- the displacement volume of a tooth gap is obtained with this construction.
- the additional construction effort is necessary, in particular because of the with circumferential control sleeve, but very considerably, so that this variant probably least questionable.
- the embodiment shown and preferred in this respect is also distinguished characterized in that here the actual pump area of the high pressure pump 8 is stacked is composed of several plate-like functional parts 20, 12, 21, the functional parts 20, 12, 21 with each other and with the rest of the housing are tension-proof clamped, represented by the correspondingly long fastening screws 19.
- the drive device 6 opposite side of the pinion 10 and toothed ring 9 a connecting plate 20th (Functional part) in which the suction port 14 and the pressure port 15 are located.
- suction port 14 and the pressure port 15 are located on the drive device 6 opposite side of the pinion 10 and toothed ring 9 a connecting plate 20th (Functional part) in which the suction port 14 and the pressure port 15 are located.
- Fig. 2 shows well how these plate-like functional parts, namely the connection plate 20, the plate-like rotor housing 5 with the toothed ring 9 and pinion 10 and the bearing plate 21 with each other and with the long threaded screws 19 Rest of the housing are clamped pressure-tight.
- the rest of the housing is special Formed assembly, which may be provided, but need not be provided.
- Such a torsionally flexible coupling is known from the prior art. It transmits a positive torque and puncture-proof, but it compensates for axial displacements, shaft misalignment and angular displacement to a limited extent.
- Such a coupling dampens vibrations and noise generation (e.g. torsionally flexible couplings from Mönninghoff, Brochure).
- the torsionally flexible coupling 23 in a hollow Housing part 24 is arranged.
- This housing part 24 represents the rest of the housing represents on which the plate-like functional parts 20, 12, 21 via the fastening screw 19 attached or braced.
- Fig. 6 shows another example of the connection plate seen in the direction of the drive shaft 20 with the suction port 14 and the pressure port 15.
- Fig. 7 shows accordingly the bearing plate 21.
- Fig. 6 shows that the connection plate 20 in addition to the suction port 14 and the pressure port 15 the typical crescent-shaped suction and pressure openings for a gerotor pump has, which represent the suction chamber on the one hand and the pressure chamber on the other.
- the normally stressed components can, for example be made of a bronze material, while the in terms of Surface hardness of particularly high stressed rolling elements - toothed ring 9 and Pinion 10 - consist of a coated, in particular plasma nitrided sintered metal can.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
- Fig. 1
- in einer Übersichtsdarstellung ein Wasser-Hochdruckreinigungsgerät,
- Fig. 2
- in einem Längsschnitt ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäß ausgestalteten Hochdruckpumpe für ein erfindungsgemäßes Wasser-Hochdruckreinigungsgerät,
- Fig. 3
- eine Ansicht des eigentlichen Pumpenbereiches in Blickrichtung auf die Motorwelle des Ausführungsbeispiels aus Fig. 2, Pumpe nach dem Gerotorprinzip,
- Fig. 4
- in einer Fig. 3 entsprechenden Darstellung eine Ansicht einer Zahnringpumpe nach dem Orbitprinzip,
- Fig. 5
- in einer Fig. 3 entsprechenden Darstellung eine Ansicht einer Zahnringpumpe nach dem Exzenterprinzip,
- Fig. 6
- in Blickrichtung auf die Motorwelle eine Ansicht der Anschlußplatte,
- Fig. 7
- in Blickrichtung auf die Motorwelle eine Ansicht der Lagerplatte.
Claims (10)
- Wasser-Hochdruckreinigungsgerätmit einem Gehäuse (1),mit einer vorzugsweise elektromotorischen Antriebseinrichtung (6) mit Antriebswelle (7) undmit einer von der Antriebseinrichtung (6) angetriebenen Hochdruckpumpe (8) für Reinigungswasser bzw. eine Wasser/Reinigungsmittel-Mischung,
dadurch gekennzeichnet,daß die Hochdruckpumpe (8) als Innenzahnradpumpe mit innen verzahntem Zahnring (9) und außen verzahntem Ritzel (10) mit unterschiedlicher Anzahl von Zähnen zwischen Zahnring (9) und Ritzel (10) ausgeführt ist. - Hochdruckreinigungsgerät nach Anspruch 1, dadurch gekennzeichnet, daß die Hochdruckpumpe (8) als Zahnringpumpe mit innen verzahntem Zahnring (9) und außen verzahntem Ritzel (10), insbesondere mit genau einem Zahn weniger als der Zahnring (9), ausgeführt ist.
- Hochdruckreinigungsgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die mit dem Reinigungswasser in Berührung kommenden Teile aus einem korrosionsfesten Werkstoff, insbesondere einer korrosionsbeständigen Metallverbindung bestehen, und, vorzugsweise, daß der Zahnring (9) und das Ritzel (10) aus einem in Wasser eine ausreichende Oberflächenhärte, und, vorzugsweise, gute Gleiteigenschaften aufweisenden Werkstoff, vorzugsweise aus einem Sinterwerkstoff, insbesondere aus einem Sintermetallwerkstoff bestehen, und, vorzugsweise, daß der Sintermetallwerkstoff eine plasmanitrierte Oberfläche aufweist.
- Hochdruckreinigungsgerät nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Hochdruckpumpe (8) als Gerotorpumpe ausgebildet ist mit von der Antriebswelle (7) angetriebenem Ritzel (10) und vom Ritzel (10) mitgenommenem drehbaren Zahnring (9), und, vorzugsweise, daß der Zahnring (10) in einem Außenlager (11), vorzugsweise ausgeführt als Gleitlager, im Rotorgehäuse (12) drehbar gelagert ist.
- Hochdruckreinigungsgerät nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Hochdruckpumpe (8) als Orbitpumpe ausgeführt ist mit von der Antriebswelle (7) angetriebenem Ritzel (10), feststehendem Zahnring (9) und einer eine planetenartige Bewegung des Ritzels (10) um die Mittelachse des Zahnrings (9) erlaubenden Kupplung zwischen Antriebswelle (7) und Ritzel (10).
- Hochdruckreinigungsgerät nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Hochdruckpumpe (8) als Exzenterpumpe ausgebildet ist mit über eine Exzenterverbindung von der Antriebswelle (7) angetriebenem, auf der Exzenterverbindung drehbar gelagertem Ritzel (10) und feststehendem Zahnring (9).
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß zumindest der eigentliche Pumpenbereich der Hochdruckpumpe (8) stapelartig aus mehreren plattenartigen Funktionsteilen (20, 12, 21) zusammengesetzt ist und daß die Funktionsteile (20, 12, 21) miteinander und mit dem Rest (24) des Gehäuses druckfest verspannt sind, und, vorzugsweise, daß auf der von der Antriebseinrichtung (6) abgewandten Seite des Ritzels (10) und Zahnrings (9) eine Anschlußplatte (20) angeordnet ist.
- Hochdruckreinigungsgerät nach Anspruch 7, dadurch gekennzeichnet, daß auf der der Antriebseinrichtung (6) zugewandten Seite des Ritzels (10) und Zahnrings (9) eine Lagerplatte (21) für die Antriebswelle (7) angeordnet ist.
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß zwischen der Antriebswelle (7) und dem Ritzel (10) eine drehelastische Kupplung (23) eingebaut ist, und, vorzugsweise, daß die drehelastische Kupplung (23) in einem hohlen Gehäuseteil (24) geschützt angeordnet ist.
- Hochdruckreinigungsgerät nach Anspruch 2 und ggf. einem der Ansprüche 3 bis 9, dadurch gekennzeichnet, daß der hohe Druck von der Druckseite, Druckanschluß (15), auf die Außenseite des Zahnrings (9) geführt wird und daß, vorzugsweise, die druckseitige Halbschale gegen die saugseitige Halbschale abgedichtet ist, und, vorzugsweise, daß die Lagerplatte (21) oder die Anschlußplatte (20) eine Umwegleitung (25) zum Druckausgleich aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19726794 | 1997-06-24 | ||
DE1997126794 DE19726794A1 (de) | 1997-06-24 | 1997-06-24 | Wasser-Hochdruckreinigungsgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0887122A2 true EP0887122A2 (de) | 1998-12-30 |
EP0887122A3 EP0887122A3 (de) | 2000-01-12 |
Family
ID=7833502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98102583A Withdrawn EP0887122A3 (de) | 1997-06-24 | 1998-02-14 | Wasser-Hochdruckreinigungsgerät |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0887122A3 (de) |
DE (1) | DE19726794A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1400660A1 (de) * | 2002-09-20 | 2004-03-24 | Mitsubishi Materials Corporation | Gesintertes integriertes Zahnrad und Gehäuse mit Nitridbeschichtigung und dessen Herstellungsverfahren |
EP1767662A2 (de) * | 2005-09-10 | 2007-03-28 | Schaeffler KG | Verschleißfeste Beschichtung und Verfahren zur Herstellung derselben |
WO2010057838A2 (de) * | 2008-11-21 | 2010-05-27 | Thielert Aircraft Engines Gmbh Vertr. D. D. Insolvenzverwalter Dr. Bruno M. Kübler | Kraftstoffpumpe für verbrennungsmotoren |
US9404069B1 (en) | 2015-06-12 | 2016-08-02 | Crossford International, Llc | Systems and methods for cooling tower fill cleaning with a chemical gel |
US9731330B1 (en) | 2015-06-12 | 2017-08-15 | Crossford International, Llc | Portable cooling tower cleaning system |
US10030216B2 (en) | 2015-06-12 | 2018-07-24 | Crossford International, Llc | Systems and methods for cooling tower fill cleaning with a chemical gel |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19858483A1 (de) * | 1998-12-18 | 2000-08-31 | Mannesmann Rexroth Ag | Hydraulische Verdrängermaschine, insbesondere Verdrängerpumpe |
DE19948860A1 (de) | 1999-10-08 | 2001-04-12 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgerät |
DE10006864B4 (de) * | 2000-02-16 | 2006-02-09 | Spraying Systems Deutschland Gmbh | Reinigungsdüse |
DE10224784A1 (de) * | 2002-06-04 | 2003-12-18 | Siemens Ag | G-Rotorpumpe |
DE102005021597A1 (de) * | 2005-05-10 | 2006-11-16 | Siemens Ag | Kraftstoffpumpe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5040950A (en) * | 1989-08-07 | 1991-08-20 | Northland Aluminum Products, Inc. | Power washing apparatus |
US5219277A (en) * | 1990-05-29 | 1993-06-15 | Walbro Corporation | Electric-motor fuel pump |
WO1998025029A1 (en) * | 1996-12-03 | 1998-06-11 | Danfoss A/S | Motor pump unit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2333659A1 (de) * | 1973-07-02 | 1975-01-16 | Ludwig Mokesch | Wasserpumpe |
DE3312868C2 (de) * | 1983-04-09 | 1986-03-20 | Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden | Hydropumpe |
DE4021500C3 (de) * | 1990-07-05 | 1998-10-22 | Mannesmann Vdo Ag | Förderaggregat, insbesondere zum Fördern von Kraftstoff |
DE4441259A1 (de) * | 1994-11-19 | 1996-05-23 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgerät |
-
1997
- 1997-06-24 DE DE1997126794 patent/DE19726794A1/de not_active Ceased
-
1998
- 1998-02-14 EP EP98102583A patent/EP0887122A3/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5040950A (en) * | 1989-08-07 | 1991-08-20 | Northland Aluminum Products, Inc. | Power washing apparatus |
US5219277A (en) * | 1990-05-29 | 1993-06-15 | Walbro Corporation | Electric-motor fuel pump |
WO1998025029A1 (en) * | 1996-12-03 | 1998-06-11 | Danfoss A/S | Motor pump unit |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1400660A1 (de) * | 2002-09-20 | 2004-03-24 | Mitsubishi Materials Corporation | Gesintertes integriertes Zahnrad und Gehäuse mit Nitridbeschichtigung und dessen Herstellungsverfahren |
US7179341B2 (en) | 2002-09-20 | 2007-02-20 | Mitsubishi Materials Corporation | Integrated sprocket and housing and manufacturing method therefor |
EP1767662A2 (de) * | 2005-09-10 | 2007-03-28 | Schaeffler KG | Verschleißfeste Beschichtung und Verfahren zur Herstellung derselben |
EP1767662A3 (de) * | 2005-09-10 | 2007-06-20 | Schaeffler KG | Verschleißfeste Beschichtung und Verfahren zur Herstellung derselben |
WO2010057838A2 (de) * | 2008-11-21 | 2010-05-27 | Thielert Aircraft Engines Gmbh Vertr. D. D. Insolvenzverwalter Dr. Bruno M. Kübler | Kraftstoffpumpe für verbrennungsmotoren |
WO2010057838A3 (de) * | 2008-11-21 | 2010-09-10 | Thielert Aircraft Engines Gmbh Vertr. D. D. Insolvenzverwalter Dr. Bruno M. Kübler | Kraftstoffpumpe für verbrennungsmotoren |
US9404069B1 (en) | 2015-06-12 | 2016-08-02 | Crossford International, Llc | Systems and methods for cooling tower fill cleaning with a chemical gel |
US9731330B1 (en) | 2015-06-12 | 2017-08-15 | Crossford International, Llc | Portable cooling tower cleaning system |
US10030216B2 (en) | 2015-06-12 | 2018-07-24 | Crossford International, Llc | Systems and methods for cooling tower fill cleaning with a chemical gel |
Also Published As
Publication number | Publication date |
---|---|
EP0887122A3 (de) | 2000-01-12 |
DE19726794A1 (de) | 1999-01-07 |
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