EP3642549A1 - Reinigungsverfahren für oberflächen im innenvolumen von durchströmten flugzeugkomponenten - Google Patents
Reinigungsverfahren für oberflächen im innenvolumen von durchströmten flugzeugkomponentenInfo
- Publication number
- EP3642549A1 EP3642549A1 EP18733550.0A EP18733550A EP3642549A1 EP 3642549 A1 EP3642549 A1 EP 3642549A1 EP 18733550 A EP18733550 A EP 18733550A EP 3642549 A1 EP3642549 A1 EP 3642549A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- steam
- internal volume
- aircraft component
- cleaned
- 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
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
-
- 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
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- 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
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0327—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid the fluid being in the form of a mist
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
- F28G13/005—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00 cleaning by increasing the temperature of heat exchange surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2230/00—Other cleaning aspects applicable to all B08B range
- B08B2230/01—Cleaning with steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G2015/006—Arrangements for processing a cleaning fluid after use, e.g. filtering and recycling
Definitions
- the present invention relates to a method for cleaning surfaces in the internal volume of a perfused aircraft component.
- Lubricants fuels or other carbonaceous substances.
- substances from the environment such as dust, sand, combustion products, oils, fuels or lubricants can be deposited.
- carbonaceous compounds in particular the coking and the partial oxidation, which occurs in certain temperature ranges, are problematic.
- through-flowed aircraft components such as heat exchangers, which, due to design, usually have pronounced undercuts and large, angled surfaces in their internal volume, it is often not possible to remove these contaminations by means of conventional methods for lack of accessibility.
- the surfaces in the inner volume are therefore accessible in large parts only for rinsing or through-flowing cleaning process.
- for cleaning in the flushing process must be strong reactive acids or other powerful chemical cleaners.
- the object of the invention is therefore to provide a cleaning method by which an effective and gentle removal of mechanically and chemically resistant contaminants on hard to reach surfaces in the interior volume of a traversed aircraft component is made possible.
- the invention solves this problem with a marketsverfahre according to the independent claim 1.
- the measures listed in the dependent claims are advantageousmannbil fertilize and improvements of angege in the independent claim enclosed method possible.
- a method for cleaning surfaces in the interior volume of a through-flown aircraft component comprising at least the following steps: connecting the internal volume to be cleaned with a steam generator, generating a cleaning steam having a predetermined vapor pressure and temperature through the steam generator, supplying the components to be cleaned Surfaces in the interior Lumen of the flowed through the plug component with the cleaning steam, maintaining the vapor pressure and the temperature within the internal volume for a predetermined condensation time, generating a pressure drop in the inner volume of the flown through aircraft component for evaporation of condensed during the condensation time part of the cleaning steam and removal of the cleaning steam from the internal volume of the perfused aircraft component through an outlet device.
- the cleaning medium used cleaning steam, or its condensate. By subjecting the surfaces to the cleaning steam, it condenses on suitably selected parameters such as vapor pressure, temperature, vapor content or condensation time on the surfaces and in particular on the contaminants.
- the vapor condensate can penetrate into cracks, cavities and porosity of the contaminants and deposit.
- the stored condensate is then evaporated again.
- the phase transformation of the cleaning medium from liquid back into a gaseous state is associated with a rapid volume increase of the cleaning medium.
- the inventive method is gentle on the surfaces to be cleaned, since no material removal occurs on the base material, also can the ecological and health effects by eliminating or minimizing chemical cleaning agents can be reduced.
- the internal volume of the flowed-through aircraft component is purged with water after the removal of the cleaning steam.
- the effect of the cleaning process can be increased and its successful completion can be achieved.
- the cleaning steps are repeated at a predetermined cycle time.
- an efficient cleaning can be achieved, whereby the degree of contamination decreases with each subsequent cleaning cycle.
- Particularly stubborn soiling can be removed layer by layer, since the steam condensate does not have to penetrate the entire contamination during a cleaning application, but instead removes the uppermost layers of the dirt during each cleaning cycle. The times of the individual cleaning passes can thus be reduced.
- a cleaning steam is preferably to be used with temperatures of at least 388 Kelvin, not more than 646 Kelvin, and ideally in the range of 433 Kelvin. Further, it is preferable that the vapor pressure of the purifying vapor is at least 0.17 MPa, at most 22 MPa, and particularly preferably 0.61 MPa.
- a cleaning steam with a vapor content of 80%, but at least 10%, is advantageous for optimum cleaning effect.
- a saturated steam provided thereby allows sufficient condensation during cleaning.
- a contact time of the condensate in the dirt in the range of a few minutes can increase the cleaning effect. Depending on the type of contamination, however, this cycle time may also be only a few seconds or up to one hour.
- the pressure gradient should preferably be at least 0.01 MPa / s and more preferably 0.1 MPa / s.
- the method is carried out with a steam generator, which is controllable with respect to vapor pressure and / or steam temperature.
- the cleaning effect depends essentially on the condensation capacity of the cleaning steam.
- dry steam ie superheated steam
- the ability to condense is severely limited and even further staining of the pollution is possible.
- a so-called saturated steam can always be assigned a temperature and a vapor pressure
- a suitable condensation capacity can be set via these parameters.
- the method is thus adjustable to different pressure and temperature strengths of the surfaces to be cleaned.
- a further method step is provided, in which the evacuated cleaning steam is recycled by being condensed and cleaned and is supplied to the steam generator for re-generating a cleaning steam in a subsequent cycle.
- Carrying out the cleaning method according to the invention with recycling and recycling of the cleaning medium reduces the costs of the cleaning process, since a new unused cleaning medium does not have to be provided for each cycle and reduces the amount of cleaning medium to be disposed of per cleaning operation.
- an additional method step is provided, in which the removed cleaning steam passes through an aircraft component through which energy has flowed through before it is fed again to the steam generator. Part of the thermal energy of the heated exhaust steam can thus be used for renewed steam generation in a subsequent cleaning cycle.
- the pressure drop in the internal volume of the aircraft component to be cleaned is realized by opening an outlet device. The vapor pressure is maintained during the condensation time by a nearly closed outlet device which separates the interior volume from a region of lesser pressure. A slight opening of the outlet device while maintaining the pressure allows the discharge of excess condensate and prevents the unwanted emergence of larger accumulations of water under pressure. A larger accumulation of water would reduce the achievable pressure gradient.
- the outlet device comprises a switching valve.
- the outlet device and the switching valve must have an adapted flow cross-section for this to produce a sufficiently large pressure gradient.
- the degree of contamination of the removed cleaning steam is measured.
- process parameters such as Condensation time and vapor pressure are adjusted. Further, it is preferable to repeat the cleaning cycle until the measured degree of soiling reaches a predetermined threshold, so that the cleaning can be completed.
- the pressure loss during a cleaning process of a standardized comparison component is measured and the cleaning cycle is repeated automatically until the measured pressure loss of the aircraft component to be cleaned substantially corresponds to the comparison value.
- a comparison component can ideally consist of a new or cleaned component that is identical in construction to the aircraft component to be cleaned. By integrating the comparison component into the cleaning structure, ideally in a parallel construction, both aircraft components are exposed to the same cleaning conditions. The analysis of the pressure loss during cleaning thus provides a control of the cleaning result without having to carry out preliminary tests in order to determine standard parameters of the different aircraft components. The exact achievement of the comparison value does not have to be achieved as a process endpoint.
- the comparison value can also be formed by a predetermined tolerance range, which can expect a sufficient for the functionality of the perfused aircraft component cleaning.
- a temporally limited end signal is advantageous, so that the automated repetition of the cleaning cycles is aborted if the comparison value is not reached within a previously defined maximum time. This prevents time-consuming cleaning of heavily soiled, no longer cleanable components that must be replaced in the final result.
- Figure 1 is a schematic representation of the structure for a method according to the invention for cleaning surfaces in the inner volume of a perfused aircraft component.
- FIG. 2 shows a schematic representation of the process sequence of a method according to the invention for cleaning surfaces in the interior volume of a through-flowed aircraft component
- Fig. 3a-3d a schematic representation of the principle of action of the cleaning method according to the invention.
- Fig. 4 is a schematic representation of another embodiment of a cleaning method according to the invention.
- Fig. 1 and Fig. 2 show schematically and by way of example the structure and the process flow of a cleaning process according to the invention.
- the through-flowed aircraft component 2 to be cleaned is a heat exchanger 2.
- the cleaning method according to the invention is applicable to a variety of flown aircraft components 2 with surfaces to be cleaned in their internal volume.
- the surfaces to be cleaned are integrated into the cleaning structure 1.
- the heat exchanger 2 via a suitable adaptation 3 to the Cleaning structure 1 connected.
- a steam generator 4 is provided in the cleaning structure 1.
- a liquid cleaning medium which usually consists largely of water, is prepared in a pre-cleaning step 6 for the requirements of the surfaces to be cleaned.
- the upstream treatment 6 may consist, for example, in a demineralization of the liquid cleaning medium.
- the treated water is supplied to the steam generator 4, which causes a vapor formation of the water.
- a cleaning steam 7 can be generated under overpressure.
- the generation of the cleaning steam 7 is preferably adjustable.
- a cleaning steam 7 with temperatures of at least 388 Kelvin, a vapor pressure of at least 0.17 MPa and a vapor content of at least 10% should be used.
- the temperature should be about 433 Kelvin, the vapor pressure about 0.8 MPa, and the vapor content about 80%.
- Such saturated steam is advantageous to ensure sufficient condensation during cleaning.
- dry steam ie superheated steam
- the cleaning performance is much lower and the soils burn 9 and can solidify further.
- steam pressure and temperature are always clearly arranged, which means that a control system can be adjusted by regulating pressure and temperature.
- the surfaces to be cleaned in the interior volume of the heat exchanger 2 are subjected to the following.
- the condensation also takes place at the contaminants 9.
- a large pressure drop 10 is generated. This can be realized, for example, by opening a switching valve 11 in an outlet device.
- the pressure gradient determines the cleaning effect substantially because the pressure gradient determines the rapid evaporation and thus the rate of volume expansion of the deposited condensate 8 during the phase transformation from liquid to solid.
- the pressure gradient should be at least a rate of about 0.01 MPa / s, ideally about 0.1 MPa / s.
- the cleaning steps are repeated at a predetermined cycle time. This can take between about 20 seconds and up to an hour, depending on the type of dirt 9 and ideally lies within a few minutes.
- the exhaust steam 13 so the ejected cleaning steam, condensed and analyzed. As a result, the cleaning effect and the successful completion of the cleaning process can be determined.
- further rinsing operations 14, for example with water may be provided to remove dissolved soils 9, which were indeed dissolved by the cleaning steam 7 but still remain in the internal volume of the heat exchanger 2.
- the pressure loss via the heat exchanger 2 as a further indicator for the degree of cleaning, can also be measured in an analysis step 15.
- the heat exchanger 2 is dried with steam 33, 34 cooled open and after-dried 35 and is then available as a purified heat exchanger 2 ⁇ available.
- energy recovery is provided as an optional step 16, which can be realized by the use of a heat exchanger which is arranged between the outlet device and the water inlet 18 of the heat exchanger 2 and provides the heat gained from the exhaust steam 13 for the steam generation 4 available.
- the polluted exhaust steam 13, or the polluted wastewater 13, can then be disposed of 36.
- the exhaust steam 13 can be recycled by a steam cleaning cycle downstream of a water recovery 19, for example, by separation 20 of the contaminants 9 from the wastewater 13, filtration the water and provision of the thus treated water at the inlet 18 of the steam generator 4 is realized.
- the mode of action of the detachment of the surface contaminants 9 is shown schematically in FIGS. 3a to 3d.
- the cleaning method according to the invention makes the natural texture of the contaminants 9 of the surfaces to be cleaned into a nut.
- the contaminants 9 deposit on the base material 21 of the surfaces to be cleaned and are generally porous and have cavities 22 and cracks 23.
- the surfaces and the contaminants 9 are subjected to the overpressure and the cleaning steam 7 (FIG. 3b).
- the cleaning steam 7 begins to condense on all surfaces and thus also on the contaminants 9.
- the cleaning steam condensate 8 occupies the surfaces and, due to the porosity of the contaminants 9, begins to penetrate into cracks 23 and cavities 22 and deposit there (FIG. 3 c).
- a pressure drop 10 is generated, which causes a sudden evaporation and thus an increase in volume of the stored in the contaminants 9 cleaning steam condensate 8.
- the pressure forces locally generated in the contaminants 9 then lead to a flaking and detachment 24 of the contaminants 9.
- the increased volume flow 25 of the cleaning steam 7 additionally assists the removal 26 of the dissolved contamination 9 (FIG. 3d).
- the cleaning according to the invention can not only be applied to porous or solid soiling, but it can also be removed, for example, liquid or viscous films.
- the mechanism of action described above with reference to FIG. 3 may be different in the case of other than the illustrated porous or solid contaminants.
- a heat exchanger 2 via a first adaptation 3 connected to a pressure and temperature or temperature controllable steam generator 4. This is supplied at its water inlet 18 via a demineralization device 6 with useful water and treated water from a water cycle 28.
- An output of the heat exchanger 2 to be cleaned is connected via a second adaptation 3 'to a switching valve 11.
- pressure is built up in the heat exchanger 2.
- condensate 8 initially accumulates on the surfaces, which have a lower temperature than the generated cleaning steam 7. If a predetermined vapor pressure and / or temperature level is reached, this state is maintained for the duration of a defined condensation time.
- the condensation time can vary as needed, ranging from about half a minute to about one hour in the standard range.
- the condensate 8 is stored in the contaminants 9.
- the switching valve 11 provided in the outlet device is completely opened so that a large pressure drop 10 occurs in the internal volume of the heat exchanger 2. Due to the strong pressure drop 10, the accumulations of steam condensate 8 evaporate under high volume seizures.
- the outlet device, the switching valve 11 and downstream piping are provided with a sufficiently large flow cross-section.
- DN12 flow tube cross-sections have proven to be sufficient for an internal volume of a heat exchanger 2 of about 3 liters applied with steam pressure to be cleaned. For larger pressurized volumes, correspondingly larger flow tube cross sections must be selected.
- the pressure loss across the heat exchanger 2 can be analyzed 15 become.
- the outlet device is fluidically connected to a condenser 30.
- the vapor-condensate mixture 7, 8 is transported away 26 and fed to the condenser 30, in which a complete condensation of the removed exhaust steam 13 is to take place. At this point, it is advantageous to take samples of the condensed mixture and to investigate 31 pollution fractions and their composition in order to conclude on the cleaning effect can.
- the process parameters of the following cleaning cycles can be adapted effectively.
- the waste water 13 from a cleaning passage is collected in a separation vessel 20, whereby the contaminants 9 can be separated depending on the type, so that the purified water is fed via a water cycle 28 and a water treatment 32 with filtration to the steam generator 4 and thus returned to the process ,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017210554.2A DE102017210554B4 (de) | 2017-06-22 | 2017-06-22 | Reinigungsverfahren für Oberflächen im Innenvolumen von durchströmten Flugzeugkomponenten |
| PCT/EP2018/066071 WO2018234218A1 (de) | 2017-06-22 | 2018-06-18 | Reinigungsverfahren für oberflächen im innenvolumen von durchströmten flugzeugkomponenten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3642549A1 true EP3642549A1 (de) | 2020-04-29 |
| EP3642549B1 EP3642549B1 (de) | 2023-08-02 |
Family
ID=62712972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18733550.0A Active EP3642549B1 (de) | 2017-06-22 | 2018-06-18 | Reinigungsverfahren für oberflächen im innenvolumen von durchströmten flugzeugkomponenten |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11311919B2 (de) |
| EP (1) | EP3642549B1 (de) |
| CN (1) | CN110770528B (de) |
| DE (1) | DE102017210554B4 (de) |
| DK (1) | DK3642549T3 (de) |
| ES (1) | ES2959313T3 (de) |
| WO (1) | WO2018234218A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018208611A1 (de) | 2018-05-30 | 2019-12-05 | Airbus Operations Gmbh | Verfahren zur Desinfektion eines Wassersystems eines Luftfahrzeugs |
| DE102018208602A1 (de) | 2018-05-30 | 2019-12-05 | Airbus Operations Gmbh | Verfahren zur Desinfektion eines Wassersystems eines Luftfahrzeugs |
| DE102019121555B4 (de) * | 2019-08-09 | 2022-02-24 | Lufthansa Technik Aktiengesellschaft | Vorrichtung zur Bauteilreinigung mit einem Reinigungsfluid |
| CN111996770B (zh) * | 2020-08-25 | 2023-06-13 | 广州视源电子科技股份有限公司 | 衣物护理机及衣物护理机的自清洁控制方法 |
| DE102022118068A1 (de) | 2022-07-19 | 2024-01-25 | Syntegon Technology Gmbh | Verfahren zum Reinigen von Wandabschnitten flüssigkeitsführender Bereiche einer Anlage sowie eine Anlage |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5287606A (en) * | 1992-03-10 | 1994-02-22 | Soft Blast, Inc. | Apparatus for treating traveling textile material in a pressurized fluid |
| US5246633A (en) * | 1992-08-25 | 1993-09-21 | Teng Chin Lin | Device for collecting used steam |
| DE4410550C1 (de) * | 1994-03-26 | 1996-06-27 | Werner Meisner | Verfahren zum Trocknen industrieller Teile in einer Trockenkammer sowie Anlage zur Durchführung des Verfahrens |
| US6019819A (en) * | 1998-03-17 | 2000-02-01 | Alpha Engineers, Inc. | Apparatus and method for extracting heat from contaminated waste steam |
| US6290778B1 (en) * | 1998-08-12 | 2001-09-18 | Hudson Technologies, Inc. | Method and apparatus for sonic cleaning of heat exchangers |
| CN100486720C (zh) * | 2002-03-05 | 2009-05-13 | 周政明 | 具多用途密闭式洗净、真空干燥的方法及其装置 |
| CN1227475C (zh) * | 2002-11-18 | 2005-11-16 | 乐金电子(天津)电器有限公司 | 瞬间加热式蒸气清洁器 |
| US6936112B2 (en) | 2002-11-26 | 2005-08-30 | Refined Technologies, Inc. | Heat exchanger cleaning process |
| US20040231702A1 (en) | 2003-05-22 | 2004-11-25 | Honeywell International Inc. | Flushing for refrigeration system components |
| WO2005001337A1 (de) * | 2003-06-27 | 2005-01-06 | Wella Aktiengesellschaft | Vorrichtung mit einem kessel zum erzeugen von wasserdampf |
| BRPI0820845A2 (pt) * | 2007-12-18 | 2015-06-16 | Heat Allied Heat Exchange Technology Ag A | Sistema de troca de calor |
| EP2108464A1 (de) * | 2008-04-09 | 2009-10-14 | Dow Global Technologies Inc. | Verfahren zur Reinigung von Gegenstände |
| DE102009009938B4 (de) | 2009-02-20 | 2013-10-17 | Hammann Gmbh | Vorrichtung und Verfahren zur Reinigung von Trinkwasserleitungen oder Abwasserleitungen in Fahrzeugen, insbesondere Flugzeugen, Schienenfahrzeugen oder Wasserfahrzeugen |
| RU2012104027A (ru) * | 2009-07-07 | 2013-08-20 | Эй-ХИТ ЭЛЛАЙД ХИТ ИКСЧЕНДЖ ТЕКНОЛОДЖИ АГ | Теплообменная система, а также способ эксплуатации теплообменной системы |
| US20140096794A1 (en) * | 2012-10-04 | 2014-04-10 | The Boeing Company | Methods for Cleaning a Contaminated Surface |
| CN103267444B (zh) | 2013-05-21 | 2015-01-28 | 侯立国 | 机载热交换器自清洗系统 |
| CN204359200U (zh) | 2014-03-27 | 2015-05-27 | 西安艾威科技有限公司 | 一种飞机热交换器清洗机 |
| CN206235237U (zh) * | 2016-11-24 | 2017-06-09 | 河钢股份有限公司承德分公司 | 一种自清洗换热装置 |
-
2017
- 2017-06-22 DE DE102017210554.2A patent/DE102017210554B4/de active Active
-
2018
- 2018-06-18 CN CN201880041807.6A patent/CN110770528B/zh active Active
- 2018-06-18 WO PCT/EP2018/066071 patent/WO2018234218A1/de not_active Ceased
- 2018-06-18 EP EP18733550.0A patent/EP3642549B1/de active Active
- 2018-06-18 DK DK18733550.0T patent/DK3642549T3/da active
- 2018-06-18 US US16/624,308 patent/US11311919B2/en active Active
- 2018-06-18 ES ES18733550T patent/ES2959313T3/es active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018234218A1 (de) | 2018-12-27 |
| CN110770528B (zh) | 2021-11-26 |
| US11311919B2 (en) | 2022-04-26 |
| DE102017210554A1 (de) | 2018-12-27 |
| DE102017210554B4 (de) | 2020-06-04 |
| CN110770528A (zh) | 2020-02-07 |
| DK3642549T3 (da) | 2023-10-09 |
| ES2959313T3 (es) | 2024-02-23 |
| US20200171553A1 (en) | 2020-06-04 |
| EP3642549B1 (de) | 2023-08-02 |
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