EP0444031A1 - Hochdruckreinigungsgerät. - Google Patents
Hochdruckreinigungsgerät.Info
- Publication number
- EP0444031A1 EP0444031A1 EP89906084A EP89906084A EP0444031A1 EP 0444031 A1 EP0444031 A1 EP 0444031A1 EP 89906084 A EP89906084 A EP 89906084A EP 89906084 A EP89906084 A EP 89906084A EP 0444031 A1 EP0444031 A1 EP 0444031A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- cleaning liquid
- supply
- electric motor
- pressure
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/002—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour incorporating means for heating or cooling, e.g. the material to be sprayed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0423—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/007—Heating the liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0205—Bypass pressure relief valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0223—Electric motor pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0235—Cooling the motor pump
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/027—Pump details
Definitions
- the invention relates to a high-pressure cleaning device with a high-pressure pump for a cleaning liquid, which is connected on the suction side to a flow bale provided with a supply line for cleaning fluid and which has a bypass line in the pressure line which branches from it to the flow tank, and with one which drives the high-pressure pump Electric motor that has a cleaning fluid flowing through a cooling fluid line.
- This fill level limitation can be an overflow line, but it can also be provided that the fill level limitation comprises a fill level indicator in the supply tank, a closing valve actuated by it in the coolant line and a switch for switching off the electric motor. In this way, during normal operation with the release of cleaning liquid, the small part of the cleaning liquid which reaches the flow container through the cooling liquid line becomes ⁇ er together with the main part
- Cleaning liquid which is fed directly into the flow tank, is removed.
- the cleaning liquid line is always supplied with fresh cleaning liquid, i.e. not preheated cooling liquid, which is then fed into the flow tank and gradually fills it up until it is full.
- the filling height limitation prevents excessive filling of the flow tank. Since the proportion of the total cleaning liquid that flows through the plastic liquid line is small in relation to the main part, effective engine cooling in bypass operation can be obtained in this way over a longer period of time, where the cooling liquid is not lost. can be collected in the preliminary container.
- a closing element is provided in the flow container. as well as an upper and a lower level indicator for actuating the closing element.
- the feed tank is filled essentially automatically via the feed line, namely fully automatically by the two fill level indicators, which ensure that the fill level is always between the upper and the lower fill level.
- the upper level indicator is arranged below the level of the filling height limitation. This way, even with full filling remains of the flow tank always receive a certain volume of the flow tank through the supply line, which can be filled up by the cleaning liquid flowing through the cooling liquid line. Since the proportion of the cleaning liquid that flows through the cooling liquid line is relatively small, cooling of the electric motor is made possible in this way in bypass operation over a longer period of time without the cleaning liquid used thereby being lost.
- the supply line with the closing elements actuated by the two level indicators ensures that the supply tank is not completely emptied and can always supply cleaning fluid in normal dispensing operation.
- the direct supply line to the flow tank is connected to a supply of heated cleaning liquid
- the cooling liquid line to the electric motor is connected to a supply of cold cleaning liquid.
- the delivery of preheated cleaning liquid is possible in the delivery operation. without having to supply preheated cleaning fluid to the electric motor for cooling purposes.
- the electric motor can still be cooled with cold cleaning liquid, nevertheless, when this cold cleaning liquid, heated in the electric motor, is introduced into the supply tank, the temperature of the cleaning liquid collected in the supply tank is only slightly reduced, since the proportion of the cooling liquid in the vehicle to the part supplied by the supply line Cleaning liquid is low and because the cleaning liquid is warmed up by the cooling of the electric motor itself.
- the drawing shows schematically the structure of a high-pressure cleaning device with a flow tank and a separate coolant line for the electric motor.
- An electric motor 1 drives a high-pressure pump 2.
- a high-pressure pump 2 For example, a conventional swash plate piston pump. This sucks cleaning liquid from a flow tank 4 via a suction line 3 and releases this cleaning liquid via a pressure line 5.
- the cleaning liquid required by the high-pressure pump 2 is fed to a spray head, not shown in the drawing, for example a spray lance or the like.
- a check valve 9 and a pressure measuring device 10 or a flow meter can be switched on.
- a coolant line 11 is assigned to the electric motor 1 and can be routed helically in the stator, for example.
- a closing valve 12 is switched on in this coolant line. Like the Bvpass line 7, it leads into the flow holder 4.
- These level indicators can be designed, for example, as float switches or can be electronic level indicators. Together they ensure that the fill level in the supply tank through the supply line 13 always remains between an upper fill level and a lower fill level.
- an overflow line 17 branches off from the feed tank 4.
- the supply line 13 to the supply tank 4 and the coolant line 11 are dimensioned so that the output of the supply line 13 is significantly greater than that of the coolant line 11, that is, with the supply line open, a much larger amount of liquid flows through the supply line per unit time than the coolant line.
- the liquid fraction through the cooling liquid line can be 10% of the liquid fraction through the supply line 13.
- the feed tank 4 is filled up to the level defined by the upper level indicator 16 through the supply line 13.
- the supply line is connected to a supply for heated cleaning liquid, not shown in the drawing, so that the supply tank with heated cleaning liquid speed is filled, for example at a temperature of 80 ° C. This temperature can be determined with a sensor 18 who the.
- the cooling liquid line 11 is connected to a supply of cold cleaning liquid, so that the cold cleaning liquid provides very effective cooling of the electric motor.
- the coolant is warmed up in the passage through the electric motor and then reaches the flow container. Even if the temperature of the coolant does not reach the temperature of the liquid supplied through the supply line 13, the temperature in the flow tank is not reduced very much because the proportion of the flow of liquid entering the coolant line is small compared to that of the supply line.
- the cleaning liquid is always fed in simultaneously from the feeder 13 and from the coolant line 11, the supply line 13 being interrupted intermittently, depending on the respective fill level.
- the closing valve 8 in the bypass line 7 opens, so that the cleaning fluid required by the high-pressure pump 2 is then returned to the flow container 4.
- cleaning fluid continues to flow through the electric motor and effectively cools it.
- the cleaning fluid finally gets into the flow tank and fills it up until the full height of the overflow line 17 is limited. If this is desired, the electric motor can still continue to work, in which case coolant can no longer fill up the flow tank, but instead flows through the overflow line after flowing through it.
- the closing valve 12 in the cooling liquid line 11 can also close it, so that the inflow of cleaning liquid through the cooling liquid line 11 is interrupted.
- the fill level in the feed tank is limited by the overflow line 17, it would also be possible to provide a fill level indicator in the feed tank instead of this overflow line 17, which is above the upper fill level indicator 16 is arranged and switches off the electric motor 1 when a corresponding fill level in the inlet tank is reached and at the same time interrupts the supply of further cleaning liquid through the cooling liquid line 11 by closing the closing valve 12.
- the period of the cycle operation without dispensing cleaning fluid would be limited by the time it takes to fill the supply tank 4 from the current fill level to the maximum fill level, which is determined by the additional, upper fill level indicator.
- Further pumps can be connected to the flow tank 4, which are driven in the same way by a motor cooled with cleaning liquid, whereby coolant as well as the liquid flowing via the bypass line are conveyed back into the flow tank.
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89906084T ATE99571T1 (de) | 1988-05-25 | 1989-05-23 | Hochdruckreinigungsgeraet. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3817641A DE3817641A1 (de) | 1988-05-25 | 1988-05-25 | Hochdruckreinigungsgeraet |
DE3817641 | 1988-05-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0444031A1 true EP0444031A1 (de) | 1991-09-04 |
EP0444031B1 EP0444031B1 (de) | 1994-01-05 |
Family
ID=6355034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89906084A Expired - Lifetime EP0444031B1 (de) | 1988-05-25 | 1989-05-23 | Hochdruckreinigungsgerät |
Country Status (5)
Country | Link |
---|---|
US (1) | US5174730A (de) |
EP (1) | EP0444031B1 (de) |
DE (1) | DE3817641A1 (de) |
DK (1) | DK279190D0 (de) |
WO (1) | WO1989011345A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8823487B2 (en) | 2009-07-14 | 2014-09-02 | Alfred Kaercher Gmbh & Co. Kg | Cleaning apparatus and method for controlling access to a cleaning apparatus |
US9016291B2 (en) | 2008-02-06 | 2015-04-28 | Alfred Kaercher Gmbh & Co. Kg | System for storing and dispensing liquid cleaning additive for a high-pressure cleaning appliance |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5966775A (en) | 1996-07-12 | 1999-10-19 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
US5918344A (en) | 1996-07-12 | 1999-07-06 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
US5920955A (en) | 1996-07-12 | 1999-07-13 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
US5850668A (en) * | 1996-07-12 | 1998-12-22 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
US6009596A (en) | 1996-07-12 | 2000-01-04 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
US6079076A (en) * | 1997-07-31 | 2000-06-27 | Shop-Vac Corporation | Vacuum cleaner collection bag |
US6206980B1 (en) | 1997-11-13 | 2001-03-27 | Kaivac, Inc. | Multi-functional cleaning machine |
US6112366A (en) | 1999-01-20 | 2000-09-05 | Shop Vac Corporation | Outlet priming self-evacuation vacuum cleaner |
DE10297561T5 (de) * | 2001-12-19 | 2005-01-13 | Vistvaen Tankahreinsun Ehf | Vorrichtung und Verfahren zum Reinigen von geschlossenen Räumen |
US7384183B2 (en) * | 2002-09-06 | 2008-06-10 | Global Ground Support, Llc | Mobile decontamination unit |
US20040226584A1 (en) * | 2003-05-14 | 2004-11-18 | Michael Guest | Multifunctional surface cleaning machine and method of using the same |
US20120096671A1 (en) | 2010-10-26 | 2012-04-26 | Karcher North America, Inc. | Floor cleaning apparatus employing a combined sweeper and vaccum assembly |
US20040226578A1 (en) * | 2003-05-14 | 2004-11-18 | Michael Guest | Priming pump for multi-functional cleaning machine |
US7533435B2 (en) | 2003-05-14 | 2009-05-19 | Karcher North America, Inc. | Floor treatment apparatus |
US8302240B2 (en) | 2009-07-29 | 2012-11-06 | Karcher North America, Inc. | Selectively adjustable steering mechanism for use on a floor cleaning machine |
US20060064844A1 (en) * | 2003-05-14 | 2006-03-30 | Venard Daniel C | Floating deck for use with a floor cleaning apparatus |
US20050081898A1 (en) * | 2003-10-15 | 2005-04-21 | Steve Williams | All purpose cleaning machine |
DE102004063201A1 (de) * | 2004-12-23 | 2006-07-06 | Alfred Kärcher Gmbh & Co. Kg | Flächenreinigungsgerät |
DE102007009394A1 (de) | 2007-02-21 | 2008-08-28 | Alfred Kärcher Gmbh & Co. Kg | Motorpumpeneinheit |
DK2620228T3 (en) | 2008-11-14 | 2017-08-21 | Kaercher Gmbh & Co Kg Alfred | Pressure Washer |
AU2009339812B2 (en) | 2009-02-13 | 2014-01-23 | Alfred Karcher Gmbh & Co. Kg | Motor pump unit |
PL2396550T3 (pl) | 2009-02-13 | 2014-09-30 | Kaercher Gmbh & Co Kg Alfred | Zespół motopompy |
DE102009010461A1 (de) | 2009-02-13 | 2010-08-19 | Alfred Kärcher Gmbh & Co. Kg | Motorpumpeneinheit |
USD654234S1 (en) | 2010-12-08 | 2012-02-14 | Karcher North America, Inc. | Vacuum bag |
US8978190B2 (en) | 2011-06-28 | 2015-03-17 | Karcher North America, Inc. | Removable pad for interconnection to a high-speed driver system |
USD693529S1 (en) | 2012-09-10 | 2013-11-12 | Karcher North America, Inc. | Floor cleaning device |
JP7130388B2 (ja) * | 2018-02-28 | 2022-09-05 | 株式会社Kelk | 液体加熱装置及び洗浄システム |
IT201800011009A1 (it) * | 2018-12-12 | 2020-06-12 | Comet Spa | Dispositivo alimentatore per una pistola erogatrice |
USD907868S1 (en) | 2019-01-24 | 2021-01-12 | Karcher North America, Inc. | Floor cleaner |
DE102022119592A1 (de) | 2022-08-04 | 2024-02-15 | Alfred Kärcher SE & Co. KG | Motorpumpeneinheit für ein hochdruckreinigungsgerät |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2037245A (en) * | 1934-11-07 | 1936-04-14 | Frank J Leifheit | Fluid separator |
US2914253A (en) * | 1956-05-25 | 1959-11-24 | Continental Can Co | Means for maintaining constant delivery from a fluid circuit |
US3744935A (en) * | 1971-10-07 | 1973-07-10 | Crane Co | Cooling systems for motor driven pumps and the like |
DE3001571C2 (de) * | 1980-01-17 | 1982-10-28 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Hochdruckreinigungsgerät |
DE3115698C1 (de) * | 1981-04-18 | 1982-12-16 | Alfred Kärcher GmbH & Co, 7057 Winnenden | Motorpumpeneinheit fuer ein Hochdruckreinigungsgeraet |
-
1988
- 1988-05-25 DE DE3817641A patent/DE3817641A1/de active Granted
-
1989
- 1989-05-23 EP EP89906084A patent/EP0444031B1/de not_active Expired - Lifetime
- 1989-05-23 US US07/613,525 patent/US5174730A/en not_active Expired - Lifetime
- 1989-05-23 WO PCT/EP1989/000564 patent/WO1989011345A1/de active IP Right Grant
-
1990
- 1990-11-23 DK DK279190A patent/DK279190D0/da unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8911345A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9016291B2 (en) | 2008-02-06 | 2015-04-28 | Alfred Kaercher Gmbh & Co. Kg | System for storing and dispensing liquid cleaning additive for a high-pressure cleaning appliance |
US8823487B2 (en) | 2009-07-14 | 2014-09-02 | Alfred Kaercher Gmbh & Co. Kg | Cleaning apparatus and method for controlling access to a cleaning apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP0444031B1 (de) | 1994-01-05 |
WO1989011345A1 (en) | 1989-11-30 |
DK279190A (da) | 1990-11-23 |
DE3817641A1 (de) | 1989-11-30 |
DE3817641C2 (de) | 1991-02-07 |
DK279190D0 (da) | 1990-11-23 |
US5174730A (en) | 1992-12-29 |
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