EP3914872A1 - Wärmetauschermodul, wärmetauschersystem und verfahren zum herstellen des wärmetauschersystems - Google Patents
Wärmetauschermodul, wärmetauschersystem und verfahren zum herstellen des wärmetauschersystemsInfo
- Publication number
- EP3914872A1 EP3914872A1 EP20720767.1A EP20720767A EP3914872A1 EP 3914872 A1 EP3914872 A1 EP 3914872A1 EP 20720767 A EP20720767 A EP 20720767A EP 3914872 A1 EP3914872 A1 EP 3914872A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- feed line
- line
- flow
- feed
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000012530 fluid Substances 0.000 claims abstract description 53
- 239000002351 wastewater Substances 0.000 description 11
- 239000010865 sewage Substances 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000011109 contamination Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
Definitions
- Heat exchanger module heat exchanger system and method for producing the heat exchanger system
- the invention relates to a heat exchanger module, a heat exchanger system and a method for producing a heat exchanger system for, in particular, subsequent installation in a sewer pipe.
- heat exchanger fluid pipelines for the inlet into and outlet from the heat exchanger are attached below drainage surfaces and are thus protected from contamination by the waste water. This has no negative impact on the heat recovery, since in the known heat exchanger only the top side comes into contact with the waste water.
- One aspect relates to a heat exchanger module, having a flow line section and a return line section, which are fluidically connected to a heat exchanger chamber of the heat exchanger module, the respective flow line sections of several heat exchanger modules being fluidically connectable to one another to form a flow line and the respective return line sections of several heat exchanger modules being fluidically connectable to one another to form a return line wherein a feed line can be arranged or arranged within the feed line section, by means of which the feed line section can be fed or fed with a heat exchanger fluid.
- One advantage of the present invention is that a space-saving heat exchanger module is made available which is particularly suitable for use in cramped and / or restricted space conditions, such as a sewer, for example.
- the available space can be better utilized so that more space can be taken up by the heat exchanger chamber compared to a conventional heat exchanger module in which a feed line is provided outside the preliminary line section.
- a heat exchanger module with increased heat exchange capacity can therefore be used with the same space conditions.
- Another advantage of the present invention is that the heat exchanger module has a smaller cross-sectional area, which, especially when used in a sewer, ensures a better waste water flow and a lower tendency for the heat exchanger module to become soiled.
- a further advantage of the present invention is that the feed line, in particular any connection points of a multipart feed line, is better protected against contamination and / or damage.
- the heat exchanger module can contain at least one heat exchanger element with a heat exchanger chamber and can be used, for example, to recover heat from cooling water from power plants, to store solar energy in hot water buffers, or to recover heat from waste heat - especially from waste water - from buildings, machines or other systems.
- air or a gas or gas mixture can flow around the heat exchanger element, at least in sections.
- a sewage pipeline can be a pipeline for collecting and conducting sewage, a sewage flow direction running parallel to the longitudinal direction of the sewage pipeline or coinciding with it.
- the sewage flow direction is usually determined by a gradient in the sewage pipeline and basically runs parallel to the longitudinal direction described above or coincides with it.
- a sewer pipe can also be an open sewer channel.
- the feed line section can be a section of a feed line, wherein the feed line section and / or the feed line can be designed as a closed line or as an open channel.
- the feed line can be designed as a closed line or as an open channel from which the flow line section and / or the flow line or the return line section and / or the return line can be fed or fed with the heat exchanger fluid. It is basically described that the feed line can be or is arranged in the feed line section and / or in the feed line. The associated advantages can also be achieved if, as an alternative to this, the feed line can be or is arranged accordingly in the return line section and / or the return line.
- the heat exchanger fluid can be water, in particular waste water, air or a gas or gas mixture.
- upstream downstream
- downstream downstream
- outside or “inside” and the like used mean in the context of the present invention that an, in particular idealized or imagined, center point is an innermost point.
- An outer area in relation to this is a, in particular idealized or imaginary, circumferential area which at least partially surrounds the center point.
- a point or area, which is referred to as being further out than another point or area, is therefore further away in the radial direction from the center point in the direction of the circumferential area than the other, further inward point or area.
- a cross-sectional area of the feed line section minus a cross-sectional area of the feed line can be approximately the same size as the cross-sectional area of the feed line.
- a flow resistance in the feed line section can thus be kept approximately the same size as a flow resistance in the feed line.
- the feed line can be designed in one piece. In this way, a connection point, which is otherwise susceptible to leakage, of an otherwise multi-piece feed line within the feed line section can be avoided.
- a fluid flow of the heat exchanger fluid in the feed line can be directed in the opposite direction to a fluid flow of the heat exchanger fluid in the feed line section.
- the feed line section can be fed with the heat exchanger fluid at a downstream end of the feed line.
- the heat exchange fluid runs through the entire feed line before it enters the flow line section from which the heat exchange fluid reaches the individual heat exchanger modules.
- the feed line can be arranged or arranged concentrically in the feed line section, in particular by means of guide rings and / or spacers.
- an outer circumference of the feed line can touch an inner circumference of the feed line section, at least in sections.
- a concentric or eccentric position of the feed line with respect to the lead-in section can be achieved by means of guide rings and / or spacers which can be formed in one piece on the feed line.
- guide rings and / or spacers which can be formed in one piece on the feed line.
- the feed line can be made of plastic. An increased durability and / or easier handling of the feed line, in particular when the feed line is introduced into the flow line section, can thus be ensured.
- a further aspect relates to a heat exchanger system with a modular structure, comprising several heat exchanger modules arranged one behind the other, each heat exchanger module having a flow line section and a return line section, which are fluidically connected to a heat exchanger chamber of the heat exchanger module, the respective flow line sections of the individual heat exchanger modules being fluidically connected to one another to form a flow line and the respective return line sections of the individual heat exchanger modules are fluidically connected to one another to form a return line and a feed line is arranged within the flow line, by means of which the flow line can be fed or fed with a heat exchanger fluid.
- an advantage of the heat exchanger system according to the invention is that laying the heat exchanger system is simplified, in particular because of the simplified introduction of the feed line into the flow line of heat exchanger modules that have already been laid. In particular, it is therefore possible to dispense with a separate connection of feed line sections otherwise present for each heat exchanger module.
- the multiple heat exchanger modules arranged one behind the other can be fluidically connected in parallel to one another. The heat exchanger modules arranged one behind the other can follow a course of the sewage pipeline in which they are laid, for example.
- a fluid flow of the heat exchanger fluid in the feed line can be directed in the opposite direction to a fluid flow of the heat exchanger fluid in the feed line.
- the feed line can be fed with the heat exchanger fluid at a downstream end of the feed line.
- the heat exchange fluid runs through the entire feed line before it enters the feed line from which the heat exchange fluid reaches the individual heat exchanger modules.
- a sum of the lengths of the feed line, flow line and return line for each heat exchanger module can be approximately the same.
- a so-called Tichelmann system Tichelmann pipe guide
- the pipes in a heating system are routed from the heat generator (e.g. boiler, solar system) to the heat consumer (e.g. radiator, hot water storage tank) and back in a loop so that the sum of the lengths of the flow and return flow at each radiator is about the same size.
- a connection according to "Tichelmann” also means that the zeta values (pressure loss coefficients) of the pipe fittings for connecting several identical components (usually hot water storage tanks or solar collectors) are the same in total for each individual component, so that an even flow is guaranteed (source : Wikipedia https://de.wikipedia.org/wiki/Tichelmann-System).
- a cross-sectional area of the feed line minus a cross-sectional area of the feed line can be approximately the same size as the cross-sectional area of the feed line.
- a flow resistance in the feed line can thus be kept approximately the same size as a flow resistance in the feed line.
- the feed line can advantageously be formed in one piece. In this way, a connection point susceptible to leakage of an otherwise multi-piece feed line within the feed line can be avoided. Furthermore, laying the heat exchanger system can be further simplified with this configuration, since the introduction of the one-piece feed line into the feed line of the heat exchanger modules that have already been laid means a considerable simplification, in particular if the feed line is virtually endless, i.e. for example in the form of a 100 m roll. In particular, it is therefore possible to dispense with a separate connection of feed line sections otherwise present for each heat exchange module.
- the feed line can be arranged concentrically in the feed line, in particular by means of guide rings and / or spacers.
- an outer circumference of the feed line can touch an inner circumference of the feed line, at least in sections.
- a concentric or eccentric position of the feed line with respect to the feed line can be achieved by means of guide rings and / or spacers which can be formed in one piece on the feed line. This makes it easier to introduce the feed line into the feed line and / or to maintain the desired position of the feed line in the feed line. It goes without saying that an external geometry of the guide rings and / or spacers is adapted to an internal geometry of the feed line and that an internal geometry of the guide rings and / or spacers is adapted to an external geometry of the feed line.
- the feed line can be made of plastic. An increased durability and / or easier handling of the feed line, in particular when the feed line is introduced into the feed line, can thus be ensured.
- Another aspect relates to a method for producing a heat exchanger system with a modular structure, comprising the steps:
- Fig. 1 is a three-dimensional view of an inventive
- FIG. 2 is a schematic representation of the principle of the known Tichelmann
- Heat exchanger modules according to FIG. 1.
- the heat exchanger module 1 has a heat exchanger element with a heat exchanger chamber 2, on which a flow line section 4 and a return line section 6 are fluidically connected to a respective connection port 8 with the heat exchanger chamber 2 .
- the heat exchanger module 1 can have a plurality of heat exchanger elements that are fluidically connected to one another.
- the flow line section 4 and the return line section 6 can additionally be mechanically connected to the heat exchanger chamber 2 at a respective stiffening point 10.
- a feed line 12 is arranged, into which a heat exchanger fluid can be introduced in an introduction direction ER.
- the feed line 12 is shown protruding from the feed line section 4 against the introduction direction ER, as is the case, for example, when the feed line 12 is introduced into the feed line section 4.
- the flow line section 4, like the feed line 12, is designed to be open at its downstream end as seen in the introduction direction ER, in particular for the connection of a further heat exchanger module 1.
- the flow line section 4 can be connected to the in Entry direction ER can be designed to be closed, viewed downstream end.
- the feed line 12, on the other hand, also remains open in this case at its downstream end as seen in the direction of introduction ER.
- the downstream end of the feed line 12, seen in the feed direction ER is spaced from the downstream end of the feed line section 4, as seen in the feed direction ER, against the feed direction ER, in order to allow the heat exchanger fluid to pass better from the feed line 12 into the feed line section 4.
- the heat exchanger fluid flows in an inflow direction ZR, which is directed against the inlet direction ER, and reaches the heat exchanger chamber 2 via the connection port 8
- Return line section 6 arrives.
- the heated heat exchanger fluid can, for example, be conducted into a (not shown) radiator or the like, after which it is conveyed back into the feed line 12, for example by a (not shown) pump, in order to close the circuit.
- FIG. 2 shows a schematic representation of the principle of a known Tichelmann system using the example of solar collectors 18 connected in parallel.
- the pipes are usually routed from the heat generator (e.g. boiler, solar system with solar collectors 18) to the heat consumer (e.g. radiator, hot water storage tank) and back in a ring laying so that the total the lengths of the flow 14 and return 16 is approximately the same for each solar collector 18.
- a connection according to "Tichelmann” also means that the zeta values (pressure loss coefficients) of the fittings of the pipeline for connecting several identical components (usually hot water storage tanks or solar collectors 18) are the same in total for each individual component, so that an even flow is guaranteed (source: Wikipedia https: / /de.wikipedia.org/wiki/Tichelmann-System).
- the colder flow 14 is shown with solid lines and the warmer return 16 is shown with dash-two-dotted lines.
- a heat exchanger fluid pump and a heat consumer for utilizing the heat in the return line 16 are omitted.
- Cold heat exchanger fluid is introduced into the flow 14 in the introduction direction ER.
- the flow 14, viewed in the direction of introduction ER, has a so-called Tichelmann line 20 upstream of the flow line 24 with the connection connections 8 to the solar collectors 18.
- the Tichelmann line 20 is designed as an extension of the flow line 24 and is designed parallel thereto.
- the heat exchanger fluid flows in the flow line 24 in an inflow direction ZR, which is directed against the inlet direction ER, although a fluid flow in the flow 14 is not reversed, ie always flows in the same direction.
- the heat exchanger fluid reaches the respective heat exchanger module 1 and its heat exchanger chamber 2 via the respective connection port 8.
- the heated heat exchanger fluid returns to the circuit via the return line 26.
- the Tichelmann line 20 ensures that the path of the heat exchanger fluid in the flow 14 is lengthened and thus the sum of the lengths of the flow 14 and return 16 is approximately the same for each solar collector 18.
- Heat exchanger modules 1 according to FIG. 1 connected in parallel with the so-called "Tichelmann line" 20, whereby a feed pressure of the heat exchanger fluid in the heat exchanger modules 1 can be kept approximately the same without providing control valves, as already mentioned above. How also already mentioned, a uniform flow and thus a uniform heat transfer from the wastewater to the heat exchanger fluid in the individual heat exchanger modules 1 is guaranteed.
- the feed line 12 shown in dashed lines, is designed as a Tichelmann line 20 and is arranged within the feed line 24.
- the heat exchanger fluid must completely pass through the feed line 12 before it emerges from the feed line 12 at a downstream end of the feed line 12 as seen in the inlet direction ER of the heat exchanger fluid and thus feeds the feed line 24.
- the heat exchanger fluid flows in the inflow direction ZR and reaches the respective heat exchanger module 1 of the heat exchanger system 22 via the respective connection port 8 and then back again via the return line 26, for example to a heat exchanger fluid pump (not shown), at whose outlet the flow line 24 connected.
- the direction of flow ZR of the heat exchanger fluid in the feed line 24 is directed against the direction of introduction ER of the heat exchanger fluid into the feed line 12, i.e. Within the flow line 14, the direction of flow of the heat exchanger fluid is reversed.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019002738.8A DE102019002738A1 (de) | 2019-04-15 | 2019-04-15 | Wärmetauschermodul, Wärmetauschersystem und Verfahren zum Herstellen des Wärmetauschersystems |
PCT/EP2020/060527 WO2020212383A1 (de) | 2019-04-15 | 2020-04-15 | Wärmetauschermodul, wärmetauschersystem und verfahren zum herstellen des wärmetauschersystems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3914872A1 true EP3914872A1 (de) | 2021-12-01 |
EP3914872B1 EP3914872B1 (de) | 2022-06-29 |
Family
ID=70391091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20720767.1A Active EP3914872B1 (de) | 2019-04-15 | 2020-04-15 | Wärmetauschermodul, wärmetauschersystem und verfahren zum herstellen des wärmetauschersystems |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220196342A1 (de) |
EP (1) | EP3914872B1 (de) |
CN (1) | CN113994164A (de) |
DE (1) | DE102019002738A1 (de) |
WO (1) | WO2020212383A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020003467A1 (de) | 2020-06-09 | 2021-12-09 | Uhrig Energie Gmbh | Abwasser-Wärmetauschermodul, Anschlusselement, Abwasser-Wärmetauschersystem und Verfahren zu seiner Herstellung |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1883057A (en) * | 1928-10-19 | 1932-10-18 | Vilter Mfg Co | Refrigeration unit |
DE3413931A1 (de) * | 1984-04-13 | 1985-10-24 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG, 7000 Stuttgart | Verdampfer, insbesondere fuer klimaanlagen in kraftfahrzeugen |
JPS60251392A (ja) * | 1984-05-25 | 1985-12-12 | Matsushita Electric Works Ltd | 排熱回収装置 |
CH690108C1 (de) * | 1996-05-31 | 2004-01-30 | Rabtherm Ag I G | Installation zum Entzug von Waerme aus Abwasser. |
WO2005088207A1 (de) * | 2004-03-15 | 2005-09-22 | Uestuen Orhan | Wärmetauscher mit vakuumröhre |
DE502004005077D1 (de) * | 2004-04-30 | 2007-11-08 | Ligrufa Ag | Wärmetauscher und Installation zur Entnahme von Wärme aus Abwasser |
DE102004032180A1 (de) * | 2004-07-02 | 2005-12-08 | Robert Bosch Gmbh | Wärmeübertrager |
US7967060B2 (en) * | 2005-08-18 | 2011-06-28 | Parker-Hannifin Corporation | Evaporating heat exchanger |
DE102005048689B3 (de) * | 2005-10-11 | 2007-05-03 | Uhrig Kanaltechnik Gmbh | Wärmetauscher zur Abwasserwärmenutzung |
CN101568792B (zh) * | 2006-11-13 | 2011-08-03 | 开利公司 | 用于分配的小通道换热器集管插入件 |
DE102007031084B4 (de) * | 2007-07-04 | 2010-09-23 | Fischer, Christel | Abwasserrohr mit Wärmetauscherelement |
US20110127023A1 (en) * | 2008-07-10 | 2011-06-02 | Taras Michael F | Design characteristics for heat exchangers distribution insert |
WO2010031193A1 (de) * | 2008-09-16 | 2010-03-25 | Rabtherm Ag | Installation zur entnahme von wärme aus fliessendem wasser |
DE102009035271B9 (de) * | 2009-07-30 | 2010-12-02 | Uhrig Kanaltechnik Gmbh | Wärmetauschervorrichtung und Verwendung |
US20110139422A1 (en) * | 2009-12-15 | 2011-06-16 | Delphi Technologies, Inc. | Fluid distribution device |
FR2954819B1 (fr) * | 2009-12-30 | 2013-08-16 | Lyonnaise Eaux France | Dispositif pour extraire de la chaleur dans un collecteur d'eaux usees, et installation mettant en oeuvre de tels dispositifs. |
EP2556320B1 (de) * | 2010-04-09 | 2016-12-21 | Ingersoll-Rand Company | Wärmetauscher |
DE102010019728B4 (de) * | 2010-05-07 | 2013-06-27 | Uhrig Kanaltechnik Gmbh | Wärmetauschervorrichtung, Verwendung, Wärmetauscheranordnung |
CN101922883B (zh) * | 2010-09-13 | 2012-09-26 | 三花控股集团有限公司 | 制冷剂导管和具有该制冷剂导管的换热器 |
US9581397B2 (en) * | 2011-12-29 | 2017-02-28 | Mahle International Gmbh | Heat exchanger assembly having a distributor tube retainer tab |
DE102014223394A1 (de) * | 2014-09-12 | 2016-03-17 | Terra Calidus Gmbh | Verlegbares Kanalrohrsegment |
WO2017150993A1 (en) * | 2016-03-03 | 2017-09-08 | Normax-Invest Sp. Z.O.O. | Tube freeze exchanger, particularly for feeding a chili accumulator |
DE102016204175A1 (de) * | 2016-03-14 | 2017-09-14 | Thomas-Krenn.AG | System, vorzugsweise für eine Temperaturregulierung eines Volumens |
CA2947772C (en) * | 2016-11-07 | 2021-06-15 | Winston R. Mackelvie | Waste heat exchanger with thermal storage |
DE102018003689A1 (de) * | 2018-04-19 | 2019-10-24 | Uhrig Energie Gmbh | Wärmetauscherelement, Wärmetauschermodul und Wärmetauschersystem |
US10816272B2 (en) * | 2018-06-27 | 2020-10-27 | Winston MacKelvie | Heat exchangers that save energy by heat exchange between a fresh liquid and waste fluids |
US11713931B2 (en) * | 2019-05-02 | 2023-08-01 | Carrier Corporation | Multichannel evaporator distributor |
DE102020003467A1 (de) * | 2020-06-09 | 2021-12-09 | Uhrig Energie Gmbh | Abwasser-Wärmetauschermodul, Anschlusselement, Abwasser-Wärmetauschersystem und Verfahren zu seiner Herstellung |
-
2019
- 2019-04-15 DE DE102019002738.8A patent/DE102019002738A1/de not_active Withdrawn
-
2020
- 2020-04-15 WO PCT/EP2020/060527 patent/WO2020212383A1/de unknown
- 2020-04-15 CN CN202080029034.7A patent/CN113994164A/zh active Pending
- 2020-04-15 US US17/603,734 patent/US20220196342A1/en active Pending
- 2020-04-15 EP EP20720767.1A patent/EP3914872B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2020212383A1 (de) | 2020-10-22 |
US20220196342A1 (en) | 2022-06-23 |
DE102019002738A1 (de) | 2020-10-15 |
EP3914872B1 (de) | 2022-06-29 |
CN113994164A (zh) | 2022-01-28 |
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