EP2609310A1 - Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors - Google Patents
Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotorsInfo
- Publication number
- EP2609310A1 EP2609310A1 EP11749097.9A EP11749097A EP2609310A1 EP 2609310 A1 EP2609310 A1 EP 2609310A1 EP 11749097 A EP11749097 A EP 11749097A EP 2609310 A1 EP2609310 A1 EP 2609310A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alkaline liquid
- cavity
- pump
- probe
- liquid
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 97
- 239000000523 sample Substances 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims description 14
- 239000000470 constituent Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 5
- 239000000356 contaminant Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims 1
- 239000011796 hollow space material Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/17—Maintenance; Servicing
Definitions
- the present invention relates to a method and a device for cleaning coked cavities, in particular intake passages and valves of an internal combustion engine.
- impurities In internal combustion engines, such as gasoline and diesel engines impurities often occur in the intake ports and on the intake valves, which are caused in particular by lower-quality fuels and / or unfavorable operation of the engines.
- the impurities are mainly hard and soft as well as greasy carbon deposits, which interfere with engine growth more and more with increasing growth, because when opening the intake valves the required inlet cross sections are not reached anymore. If nothing is done against such deposits, massive faults in the inlet valves can occur, which means that the entire cylinder head of an engine has to be replaced.
- the object of the invention is to provide a method and a device for cleaning coked cavities, in particular intake passages of a combustion engine, which, with simple handling, enables effective removal of impurities and deposits even in hard-to-reach places.
- the method for cleaning cavities comprises the following steps: introducing an alkaline liquid into a cavity to be cleaned, heating the alkaline liquid, and Aspirating the alkaline liquid with the contaminants contained therein from the cavity, wherein the alkaline liquid in particular has a pH of 7 to 14.
- a liquor in solid form and a solvent are mixed together and introduced into the cavity to be cleaned, so that the alkaline liquid is formed in the cavity to be cleaned by dissolving the liquor in the solvent with evolution of heat.
- the cleaning effect of the alkaline liquid is significantly increased by the exothermic reaction, since the resulting heat can be used almost completely for heating the alkaline liquid and the impurities to be removed.
- the dissolved dirt particles are extracted by means of a pump.
- the alkaline liquid is heated prior to introduction, and the heated alkaline liquid is injected into the cavity, wherein the alkaline liquid is sucked with the dirt constituents contained therein from the cavity, while still alkaline liquid in the cavity is injected so that the cavity is continuously rinsed with alkaline liquid.
- the alkaline liquid with the dirt constituents contained therein is sucked out of the cavity and then filtered to remove the dirt constituents contained therein, and the filtered alkaline liquid is subsequently heated and injected back into the cavity , As a result, the consumption of cleaning fluid can be kept low without compromising the effectiveness of the cleaning process.
- the alkaline liquid is injected under pressure against the walls and the bottom of the cavity.
- the alkaline liquid can be effectively brought into hard to reach areas of cavities, where they can then fully develop their cleaning effect.
- the second probe is connected to the suction side of the pump via a filter for removing contaminants from the alkaline liquid.
- the two probes thus form, with the pump and the filter, an open system which is closed via the cavity to be cleaned to a circuit for the alkaline liquid.
- the outlet side of the filter is connected to the suction side of the pump via a connecting line to which a heater for heating a liquid flowing through is arranged.
- a heating of the alkaline liquid in the pressure side is possible.
- the first probe is a closed at its front end thin tube, in the peripheral wall a plurality of radially directed nozzles are provided. The nozzles can be arranged on a line parallel to the axis of the tube.
- the first probe have at least two nozzles for injecting the alkaline liquid into the cavity to be cleaned, which inject the alkaline liquid in different directions.
- the nozzles can be arranged on one or more helix (s) or on one or more circumferential circle (s).
- at least one nozzle is provided in the region of the closed front end through which the alkaline liquid can be sprayed essentially in the axial direction of the tube of the probe.
- FIG. 1 is a simplified schematic sectional view of an intake passage of an internal combustion engine, for example a diesel engine;
- FIG. 2 shows a simplified schematic block diagram of a device according to the invention for cleaning cavities, in particular for intake passage and valve cleaning in internal combustion engines;
- FIG. 3 shows simplified schematic representations of various embodiments of a first probe for injecting an alkaline liquid into a cavity to be cleaned;
- FIG. 4 shows a simplified schematic block diagram of a device according to the invention according to an advantageous development
- FIG. 5 shows a simplified schematic block diagram of the device according to the invention according to FIG. 4 with a circuit which is short-circuited for preheating
- Figure 6 is a simplified schematic representation of a covering device for the opening of a cavity to be cleaned.
- Figure 1 is an example of a cavity to be cleaned, namely an intake passage 10 in a cylinder head 11 of an internal combustion engine, such as a diesel engine 12, which is mounted on a corresponding cylinder block 13 in a conventional manner.
- a in an unspecified cylinder opening in the cylinder block 13 outlet opening 14 of the intake passage 10 is conventionally closed by an intake valve 15 which is guided by a corresponding valve guide 16 in the cylinder head 11 to release and close the opening 14 of the intake passage in accordance with engine control.
- the intake ports 10 and the intake valves 15 of diesel engines coke very much.
- swirl channels (not shown in detail), which are used in modern diesel engines with four valves per cylinder to impart a twist to the gas mixture to be supplied to the cylinder, which should lead to improved mixing of air and injected fuel.
- the deposits in the inlet channels 10 and at the inlet valves 15 are in particular soft, greasy carbon deposits.
- the cleaning of the inlet channels 10 and the inlet valves 15 is carried out by exposing the inlet-side openings 17 of the inlet channels 10 in the cylinder head 11 in the inlet channel 10, an alkaline liquid is either previously heated or the heated substantially after insertion.
- an alkaline liquid is either previously heated or the heated substantially after insertion.
- the heat of solution is utilized when dissolving a lye in a corresponding solvent.
- the liquor for example potassium hydroxide solution or sodium lye
- a solvent such as indicated by the arrow F
- the solvent used may be any suitable solvent, such as water or alcohol.
- particularly good cleaning results are achieved when hydrogen peroxide is used as the solvent.
- the mixing ratio of lye (in solid form) and solvent is chosen so that the resulting alkaline liquid has a pH of 7 to 14, in particular more than 12.
- a device according to the invention for cleaning cavities, in particular intake passages 10 of an internal combustion engine, for example a diesel engine 12, comprises a first probe 21 and a second probe 22.
- the first probe 21 is provided with one or more at its front end Nozzle (s) 23 for injecting an alkaline liquid into a cavity to be cleaned and connected at its other end to the pressure side 24 of a pump 25, the suction side 26 of a filter 27 via a connecting line 28, which is associated with a heater 29, heated alkaline liquid can be supplied.
- the second probe 22 is connected to an inlet side of the filter 27 so as to be connected to the suction side 26 of the pump 25 via the filter 27 serving to remove debris from the alkaline liquid and the connection pipe 28.
- the sucked by the pump 25 via the connecting line 28 from the filter 27 liquid is heated by the connecting line 28 associated heater 29 to a desired temperature.
- the heater may also be arranged in a manner not shown on the pressure side of the pump 25.
- the first probe 21 is formed as a closed at its front end thin tube, in the peripheral wall a plurality of radially directed nozzles 23 are provided, as shown in particular in Figure 3.
- the number and the diameter of the nozzles 23 are designed so that the individual jets emerging from the nozzles 23 are so strong that they can cause a mechanical detachment of the carbon deposits to be removed.
- one or more additional nozzles 23 ' may be provided through which the alkaline liquid is drawn, as indicated in the drawing is, can be sprayed in the axial direction or at least with a substantial proportion in the axial direction.
- the nozzles 23 may also be arranged on one or more helix (s) (SL in FIG. 3 (d)) or on one or more peripheral circle (s) (FIG. 3 (c)).
- the individual nozzles 23 may be circumferentially distributed uniformly or unevenly.
- the second probe 22 is removed from the reservoir 30 and also inserted into the inlet channel 10, in order to remove the alkaline liquid contained therein together with the dirt components contained therein, ie mechanically and / or chemically detached dirt constituents from it.
- the cleaning liquid is then cleaned in the filter 27 and, when it is fed through the Binding line 28 of the heater 29 is heated again to the desired temperature and then sprayed or sprayed by the pump 25 again under pressure into the inlet channel 10, wherein the individual liquid jets impinge on the walls of the inlet channel 10 itself and the surface of the inlet valve 15.
- the inlet valves 15 of the inlet channels 10 to be cleaned are reliably closed.
- a rinsing circuit is constructed in which the continuously aspirated cleaner (alkaline cleaning liquid) after treatment in the filter 27 and a renewed heating by the heater 29 is continuously fed back to the inlet channel 10.
- the continuous supply of the alkaline cleaning fluid under pressure by means of the first probe 21 provides, as already mentioned above, the additional mechanical washing action.
- the cleaning can be completed by rinsing with water or alcohol and then drying with compressed air.
- the invention thus provides a simple and reliable cleaning method for cleaning cavities, in particular coked cavities, such as the intake ports of an internal combustion engine, for example a diesel engine, with which its If used in a timely manner, it can be significantly extended in a cost-effective manner.
- the device according to the invention shown in FIG. 4 for cleaning cavities, in particular intake passages 10 of an internal combustion engine, for example a diesel engine 12, comprises, like the device explained above with reference to FIG. 2, a first probe 21 and a second probe 22 Probe 21, which has one or more nozzles 23 as described above at its front end, is connected at its other end via a heater 29 to the pressure side 24 of a first pump 25, the suction side 26 via a corresponding intake 31 with a reservoir 30th is connected.
- the second probe 22, so the suction probe is connected via a filter 27 to the suction side 36 of a second pump 35, the pressure side 34 is connected via a return line 32 to the reservoir 30 in combination.
- the cleaning device shown in FIG. 4 has two pumps, namely the first pump 25 serving as a pressure pump for injecting the alkaline liquid into the cavity to be cleaned, and the suction pump for sucking off alkaline fluid and contaminants
- the second discharge pump or the second pump 35 delivers the liquid pumped out of the cavity and filtered via the return line 32 into the storage container 30, from which then via the suction line 31 alkaline liquid of the feed or Suction side 26 of the first pump is supplied.
- the liquid circuit is thus open in the region of the cavity to be cleaned and in the region of the reservoir 30.
- the suction line 31 and the return line 32 are tightly inserted into the latter via a corresponding adapter cover (not shown), which can be screwed onto the inlet and outlet connection of the reservoir 30.
- an adapter plate 40 trained cover provided, which can be screwed in a manner not shown, for example by means of screws on the cylinder head 11.
- the adapter plate 40 has two openings 41, through which the two probes 21, 22 can be passed substantially tight.
- the through holes 41 may be provided with either the alkaline liquid resistant seals made of artificial or natural rubber or the like.
- an overflow 42 is expediently provided, the outlet side of which can be connected to a collecting vessel (not shown).
- the adapter plate 40 which is shown in Figure 6 only to cover the opening of a single inlet channel 10, but can also be designed so that all lying in a line or in a plane valve inlet channels are covered so that when cleaning the inlet channels in the Workshop can reduce the assembly costs significantly.
- the liquid circuit is initially short-circuited by the first probe 21, ie the probe for injecting liquid into the cavity, instead of the first probe 21
- Return line 32 is introduced into the reservoir 30. Now sucked from the reservoir 30 alkaline liquid through the heater 29, which is arranged downstream of the first pump 25, heated and conveyed back into the reservoir 30. This process can be repeated until the alkaline cleaning liquid in the storage container 30 has reached a desired temperature.
- the first pump 25 is turned on, so that alkaline cleaning liquid is injected into the inlet channel 11.
- the second pump 35 is turned on to suck off liquid and dirt.
- the delivery rate of the two pumps should be substantially the same in order to maintain a constant liquid level in the inlet channel 10 during cleaning.
- the cleaning of the inlet channel 10 and the inlet valve 15 is carried out in the same manner as described above, only with the difference that the filtered through the filter 27 cleaning liquid is returned to the reservoir 30, before being returned from the pressure pump 25 via the heater 29 in the inlet channel is injected.
- the use of two pumps, that is, a suction pump and a pressure pump for supplying cleaning fluid to the cavity to be cleaned has the advantage that the injection and suction of alkaline cleaning fluid can be controlled independently. Furthermore, not only the cleaning efficiency can be increased in this way, since the cleaning fluid is not consumed so quickly, but it can also improve the reliability in the workshop significantly although an open fluid circuit is used, since both the probes can be inserted tightly into the cavity to be cleaned by means of the adapter plate 40, and the suction and return lines are tightly inserted into the reservoir.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010039696A DE102010039696A1 (de) | 2010-08-24 | 2010-08-24 | Verfahren und Vorrichtung zur Reinigung von verkokten Hohlräumen insbesondere von Einlasskanälen und Ventilen eines Verbrennungsmotors |
PCT/EP2011/004251 WO2012025227A1 (de) | 2010-08-24 | 2011-08-24 | Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2609310A1 true EP2609310A1 (de) | 2013-07-03 |
EP2609310B1 EP2609310B1 (de) | 2015-03-18 |
Family
ID=44514633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11749097.9A Active EP2609310B1 (de) | 2010-08-24 | 2011-08-24 | Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130220379A1 (de) |
EP (1) | EP2609310B1 (de) |
CN (1) | CN103339357A (de) |
DE (1) | DE102010039696A1 (de) |
WO (1) | WO2012025227A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020178023A1 (en) | 2019-03-04 | 2020-09-10 | Tunap Gmbh & Co. Kg | Cleaning device with cleaning medium reception chamber for receiving cleaning medium after passing a device to be cleaned |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5106695B1 (ja) * | 2012-04-02 | 2012-12-26 | 修 小川 | ディーゼルエンジン用内部洗浄剤及びこれを用いた洗浄システム |
PL3250671T3 (pl) | 2015-01-30 | 2023-09-11 | The Lubrizol Corporation | Kompozycja do oczyszczania układów dostarczania paliwa do silnika benzynowego, układów wlotu powietrza i komór spalania |
CZ306082B6 (cs) * | 2015-05-28 | 2016-07-27 | Ladislav Šťastný | Zařízení pro provádění způsobu a způsob čištění spalovacích motorů |
DE202017100159U1 (de) | 2017-01-13 | 2017-01-27 | Tunap Industrie Chemie Gmbh & Co. Produktions Kg | Strahlsonde zum Einbringen eines körnigen Strahlguts in einen Hohlraum |
AT519615A1 (de) * | 2017-01-31 | 2018-08-15 | MAN TRUCK & BUS OESTERREICH GesmbH | Gussteilkanal-Reinigungsvorrichtung und Verfahren zur Reinigung eines Gussteilkanals |
CN107214152A (zh) * | 2017-07-11 | 2017-09-29 | 徐州东方热电有限公司 | 一种燃气炉燃烧喷嘴清洗浸泡装置 |
CN108856079B (zh) * | 2018-06-15 | 2021-09-24 | 中国电建集团山东电力建设第一工程有限公司 | 一种快速清理烟冷器结垢的装置 |
CN112196711B (zh) * | 2020-09-11 | 2022-03-25 | 上海中船三井造船柴油机有限公司 | 用于lgip主机燃气模块清洗的投油工具和方法 |
CN114151192A (zh) * | 2021-12-16 | 2022-03-08 | 中国船舶重工集团公司第七一一研究所 | 清理装置 |
CN114951174B (zh) * | 2022-04-18 | 2023-06-13 | 瑞力杰(北京)智能科技有限公司 | 火焰筒内积碳在线清洗方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3095380A (en) * | 1958-07-14 | 1963-06-25 | Purex Corp Ltd | Composition for removal of heat scale and carbon deposits |
US5415190A (en) * | 1994-03-02 | 1995-05-16 | Ionescu; John | Carbon monoxide cleaning apparatus |
US6564814B2 (en) * | 1997-05-23 | 2003-05-20 | Shelba F. Bowsman | Engine decarbonizing system |
JP4881222B2 (ja) * | 2007-05-17 | 2012-02-22 | シェブロンジャパン株式会社 | ガソリンエンジンの内面部品の洗浄方法 |
EP2138557A1 (de) * | 2008-06-18 | 2009-12-30 | Paul Hughett | Reinigungszusammensetzung für die Oberfläche eines Verbrennungsmotors |
-
2010
- 2010-08-24 DE DE102010039696A patent/DE102010039696A1/de not_active Withdrawn
-
2011
- 2011-08-24 WO PCT/EP2011/004251 patent/WO2012025227A1/de active Application Filing
- 2011-08-24 CN CN201180051099.2A patent/CN103339357A/zh active Pending
- 2011-08-24 US US13/818,585 patent/US20130220379A1/en not_active Abandoned
- 2011-08-24 EP EP11749097.9A patent/EP2609310B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012025227A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020178023A1 (en) | 2019-03-04 | 2020-09-10 | Tunap Gmbh & Co. Kg | Cleaning device with cleaning medium reception chamber for receiving cleaning medium after passing a device to be cleaned |
Also Published As
Publication number | Publication date |
---|---|
WO2012025227A1 (de) | 2012-03-01 |
US20130220379A1 (en) | 2013-08-29 |
EP2609310B1 (de) | 2015-03-18 |
CN103339357A (zh) | 2013-10-02 |
DE102010039696A1 (de) | 2012-03-01 |
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