EP3527712B1 - Appareil de séchage de linge et procédé de fonctionnement d'un tel appareil - Google Patents

Appareil de séchage de linge et procédé de fonctionnement d'un tel appareil Download PDF

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Publication number
EP3527712B1
EP3527712B1 EP19156018.4A EP19156018A EP3527712B1 EP 3527712 B1 EP3527712 B1 EP 3527712B1 EP 19156018 A EP19156018 A EP 19156018A EP 3527712 B1 EP3527712 B1 EP 3527712B1
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EP
European Patent Office
Prior art keywords
rinsing
condenser
drying
heat pump
cycle
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.)
Active
Application number
EP19156018.4A
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German (de)
English (en)
Other versions
EP3527712A1 (fr
Inventor
Ralf BÖMMELS
Oliver Despang
Marcus Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL19156018T priority Critical patent/PL3527712T3/pl
Publication of EP3527712A1 publication Critical patent/EP3527712A1/fr
Application granted granted Critical
Publication of EP3527712B1 publication Critical patent/EP3527712B1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the invention relates to a device for drying laundry, having at least one process air system, at least one heat pump thermally coupled to the process air system, at least one rinsing device for rinsing an evaporator of the heat pump and at least one rinsing unit for rinsing a condenser of the heat pump and at least one control electronics for controlling the Rinsing device and the rinsing unit.
  • the invention relates to a method for operating a device for drying laundry, the device having at least one process air system, at least one heat pump thermally coupled to the process air system, at least one rinsing device for rinsing an evaporator of the heat pump and at least one rinsing unit for rinsing a condenser of the Has heat pump.
  • Devices for drying laundry are known in a variety of configurations.
  • devices for drying laundry which enable an open or closed process air system with a drying chamber receiving laundry to be dried and a recovery of heat from the process air flowing in the process air system.
  • the unit for heat recovery can be a single heat exchanger thermally coupled to the process air system or a compressor heat pump thermally coupled to the process air system. In the latter case, heat is extracted from the exhaust air exiting the drying chamber by means of an evaporator of the heat pump, which is returned to the process air that has entered the process air system in a refrigerant circuit of the heat pump by means of a condenser of the heat pump.
  • WO 2017/125172 A1 discloses a method for operating a dryer with a heat pump and internal flushing of at least one heat exchanger, the dryer having a drum for receiving moist items of laundry, a heat pump having as a heat exchanger a heat sink and a heat source, a condensate pan, a condensate container, a condensate pump for conveying an aqueous one Liquid from the condensate pan to the condensate container, a flushing device connected to the condensate container for at least one of the heat exchangers, a fan for conveying process air in a process air duct, a control device and a counting device for registering a number of drying programs carried out, wherein the counting device can contain at least one Can detect counter reading n i with i> 1.
  • a drying program is started.
  • the amount M of aqueous liquid that is conveyed from the condensate pan into the condensate container during the drying program is determined, and the determined amount M is determined with an amount M set intended for flushing the heat exchanger compared, the heat exchanger with the flushing device is flushed with the fan switched on, if M> M set , and the counter reading n i is reset to zero.
  • the drying program is carried out and ended without rinsing the heat exchanger.
  • KR 101 192 047 B1 discloses a tumble dryer with a laundry drum, a heat pump, a condensate collecting pan for collecting the condensate produced by the heat pump, a pump connected to the condensate collecting pan and an injector connected to the pump, which sprays the condensate to the heat exchanger of the heat pump.
  • High-performance heat pumps have heat exchangers (evaporators, condensers) that have an outer lamellar structure with lamellae arranged closely adjacent to one another.
  • the efficiency of such a high-performance heat pump can be significantly impaired by a build-up of lint on the respective lamellar structure.
  • An object of the invention is to improve a drying performance of an apparatus for drying laundry.
  • a device for drying laundry has at least one process air system, at least one heat pump thermally coupled to the process air system, at least one rinsing device for rinsing an evaporator of the heat pump, at least one rinsing unit for rinsing a condenser of the heat pump and at least one control electronics for controlling the rinsing device and the Rinsing unit, the control electronics being set up to control the rinsing device and the rinsing unit in such a way that, during non-consecutive drying processes, a rinsing process for rinsing the evaporator is replaced by a rinsing process for rinsing the condenser, and the control electronics are set up to rinse the rinsing process for rinsing the Condenser to be carried out once the laundry has reached a specified degree of dryness.
  • the condenser of the heat pump is also flushed during certain drying processes, namely instead of the evaporator, so that a sufficient amount of liquid is used to flush the condenser, which would not be the case if the evaporator and condenser were flushed at the same time. Since the condenser is cooled down during the rinsing process by the liquid flowing through the condenser, which has a negative effect on the effectiveness of the respective drying process, the time and period for rinsing the condenser must be carefully selected.
  • the flushing device for flushing the evaporator of the heat pump can be of conventional design.
  • the flushing device can have a flushing valve, via the opening of which a liquid contained in the condensate container can be drained from the condensate container and passed through the evaporator.
  • the flushing unit for flushing the condenser of the heat pump can, for example, have at least one valve unit connected to a fluid line, via which condensate can be pumped from a condensate pan by means of a condensate pump into the condensate container, and at least one flushing component connected to the valve unit for flushing the condenser, the Valve unit can be designed such that it connects the condensate pump to the condensate container in a first switching position and the condensate pump to the flushing component in a second switching position.
  • the condensate pump, the flushing valve and the valve unit can be controlled by means of the control electronics in such a way that before the valve unit is switched to the second switching position and the condensate pump is activated, the flushing valve is opened for a predetermined period of time when the condensate pump is deactivated the second switch position and the activation of the condensate pump ends.
  • the rinsing unit for rinsing the liquefier can have at least one nozzle for forming a cleaning spray jet.
  • the control electronics can be implemented by software implementation in existing device electronics or as a separate unit.
  • a rinsing process for rinsing the evaporator is replaced by a rinsing process for rinsing the liquefier during non-consecutive drying processes means that this rinsing process is not carried out in two immediately consecutive drying processes. Instead, there is at least one drying process in which no rinsing process for rinsing the liquefier is carried out between two drying processes, in each of which a rinsing process for rinsing the condenser is carried out.
  • the open or closed process air system is partially formed by a drying chamber that holds laundry to be dried and has at least one process air fan for moving process air through process air ducts of the process air system that are communicating with the drying chamber.
  • the process air system can also have at least one process air filter, which can be connected, for example, between the drying chamber and the evaporator of the heat pump.
  • the process air system can have at least one electrical auxiliary heating unit, which can be connected between the condenser of the heat pump and the drying chamber.
  • the heat pump is preferably directly thermally coupled to the process air system.
  • the evaporator and the condenser are thermally coupled to the process air system.
  • the heat pump can be designed as a compressor heat pump and accordingly have at least one compressor for compressing the refrigerant and an expansion unit for expanding the refrigerant.
  • the degree of dryness of the laundry to be dried can be determined, for example, by means of at least one moisture sensor on the process air system, which is connected to the control electronics.
  • rinsing is carried out in such a section of a drying process in which the condenser only has to provide less power for heating process air.
  • An impairment the performance of the condenser through its wetting with the liquid during its rinsing is less relevant in this section of the drying process, compared to the case if the rinsing of the liquefier were carried out earlier in the drying process, which has the disadvantage of lengthening the drying process and an increase in the energy consumption of the device.
  • the rinsing process for rinsing the liquefier can be carried out when 80% of the water present in the laundry to be dried has already condensed out during the drying process.
  • This condition of the laundry is also referred to as "iron dry".
  • Such a state of the laundry can be achieved, for example, in the middle of a drying process.
  • the condenser can be rinsed as a function of a process parameter specified or recorded in some other way, for example as a function of time or controlled by a time program.
  • the device for drying laundry can be designed, for example, as a tumble dryer, a washer-dryer or a drying cabinet.
  • control electronics are set up to determine whether a sufficient amount of liquid is available in the device for the flushing process for flushing the liquefier, and to carry out this flushing process when a sufficient amount of liquid is available in the device, and to start the flushing process to postpone the next drying process if there is insufficient liquid in the device.
  • the control electronics can be set up, for example, to detect or determine a liquid fill level in the condensate pan and / or the condensate container.
  • the control electronics can be set up to determine a fill level of a condensate container from a control of a condensate pump that has taken place.
  • control electronics are set up to carry out the rinsing process for rinsing the liquefier during drying processes, between which at least ten, in particular at least twenty, and a maximum of two hundred, in particular a maximum of one hundred, drying processes without a corresponding Flushing of the condenser. If there are too few drying processes in which the condenser is not rinsed between drying processes in which the condenser is rinsed, this has a negative effect on the performance data due to the cooling of the condenser during its rinsing. The deterioration in performance can be proportionately included in the performance information.
  • the performance specification must be increased by 1 minute if the drying process is extended by 20 minutes by rinsing the condenser every twentieth drying process.
  • a somewhat thicker coating that forms in a longer period between flushing processes of the condenser can usually be cleaned off on the condenser better than a thin coating that would form, for example, if the condenser is rinsed in each drying process, since it is already Let cross-linked lint as a whole be better detached from the condenser.
  • the rinsing process for rinsing the liquefier is therefore carried out during drying processes, between which there are at least ten, preferably at least fifteen, in particular at least twenty drying processes without a corresponding rinsing of the liquefier. If there are too many drying processes between drying processes in which the condenser is rinsed in each case, in which the condenser is not rinsed, the deposits on the condenser can reach a thickness at which a negative influence on the device drying performance can be measured, for example by extending the Drying time or the length of a drying process.
  • the amount of deposits on the condenser can be so high that problems arise with the discharge of liquid into a floor pan or condensate pan through a drainage system of a separating floor on which the condenser and the evaporator are set up.
  • the rinsing process for rinsing the liquefier is therefore carried out during drying processes, between which there are a maximum of two hundred, preferably a maximum of one hundred and fifty, in particular a maximum of one hundred, drying processes without a corresponding rinsing of the liquefier.
  • a method for operating a device for drying laundry having at least one process air system, at least one heat pump thermally coupled to the process air system and at least one rinsing device for rinsing an evaporator of the heat pump, a rinsing process for rinsing is performed during non-consecutive drying processes of The evaporator is replaced by a rinsing process for rinsing the liquefier, and the rinsing process for rinsing the liquefier is carried out once the laundry has reached a predetermined degree of dryness.
  • the method can be carried out with the device according to one of the above-mentioned configurations or a combination of at least two of these configurations with one another.
  • the rinsing process for rinsing the liquefier is carried out during drying processes, between which there are at least ten, in particular at least twenty, and a maximum of two hundred, in particular a maximum of one hundred, drying processes without a corresponding rinsing of the liquefier.
  • Fig. 1 shows a schematic representation of an embodiment of a device 1 according to the invention for drying laundry.
  • the device 1 has a device housing 2 in which a closed process air system 3 with a drying chamber 4 that receives laundry to be dried is arranged.
  • the process air system 3 has a process air blower 5, which can be activated by means of control electronics 6 of the device 1 to carry out a drying process.
  • the device 1 has a heat pump 7 which is thermally coupled to the process air system 3 and is designed as a compressor heat pump.
  • the heat pump 7 has a condenser 8 that heats the process air flowing in the process air system 3, an evaporator 9 that cools and dehumidifies the process air emerging from the drying chamber 4, a compressor 10, an expansion unit 11 and refrigerant lines 12 that connect these components of the heat pump 7 to one another, whereby a refrigerant circuit of the heat pump 7 is formed.
  • the device 1 has a flushing device 13 for flushing the evaporator 9.
  • the flushing device 13 has a condensate container 14, a flushing component 15, a flushing line 16 connecting the condensate container 14 to the flushing component 15, and a flushing valve 17 arranged on the flushing line 16 and controllable by the control electronics 6.
  • the condensate container 14 is connected via a fluid line 18 to a condensate pan 19 arranged below the condenser 8 and the evaporator 9.
  • a condensate pump 24 Arranged on the fluid line 18 is a condensate pump 24, which can be controlled by the control electronics 6, for pumping a liquid contained in the condensate pan 19 into the condensate container 14.
  • the device 1 has a rinsing unit 20 for rinsing the condenser 8.
  • the flushing unit 20 has a flushing component 21, a valve unit 22 connected between the condensate pump 24 and the condensate container 14 and controllable by the control electronics 6, and a flushing line 23 connecting the flushing component 21 to the valve unit 22.
  • the valve unit 22 is designed in such a way that it connects the condensate pump 24 to the condensate container 14 in a first switching position and connects the condensate pump 24 to the flushing component 21 in a second switching position.
  • the control electronics 6 are set up to control the flushing device 13 and the flushing unit 20.
  • the control electronics 6 are set up to control the flushing device 13 and the flushing unit 20 in such a way that during non-consecutive Drying processes, a rinsing process for rinsing the evaporator 9 is replaced by a rinsing process for rinsing the condenser 8.
  • the control electronics 6 can be set up to determine whether a sufficient amount of liquid is available in the device 1, in particular in the condensate container 14 and / or the condensate pan 19, for the rinsing process for rinsing the condenser 8, and to carry out this rinsing process if sufficient The amount of liquid in the device 1 is available, and to postpone the rinsing process to the next drying process if there is insufficient amount of liquid in the device 1.
  • the control electronics 6 can be set up to carry out the rinsing process for rinsing the condenser 8 once the laundry has reached a predetermined degree of dryness.
  • control electronics 6 can be set up to carry out the rinsing process for rinsing the liquefier 8 during drying processes, between which there are at least ten, in particular at least twenty, and a maximum of two hundred, in particular a maximum of one hundred, drying processes without a corresponding rinsing of the liquefier 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Drying Of Solid Materials (AREA)

Claims (6)

  1. Appareil (1) de séchage du linge, présentant au moins un système d'air de processus (3), au moins une pompe à chaleur (7) couplée thermiquement au système d'air de processus (3), au moins un dispositif de lavage (13) pour le lavage d'un évaporateur (9) de la pompe à chaleur (7) et au moins une unité de lavage (20) pour le lavage d'un condenseur (8) de la pompe à chaleur (7) et au moins une électronique de commande (6) pour la commande du dispositif de lavage (13) et de l'unité de lavage (20), dans lequel l'électronique de commande (6) est aménagée afin de commander le dispositif de lavage (13) et l'unité de lavage (20) de telle sorte que durant des processus de séchage non consécutifs respectivement un processus de lavage pour le lavage de l'évaporateur (9) est remplacé par un processus de lavage pour le lavage du condenseur (8), et caractérisé en ce que l'électronique de commande (6) est aménagée afin d'exécuter le processus de lavage pour le lavage du condenseur (8) à partir de l'atteinte d'un degré de séchage du linge prédéfini.
  2. Appareil (1) selon la revendication 1, caractérisé en ce que l'électronique de commande (6) est aménagée afin de déterminer si une quantité de fluide suffisante est disponible dans l'appareil (1) pour le processus de lavage pour le lavage du condenseur (8) et d'exécuter ce processus de lavage lorsqu'une quantité de fluide suffisante est disponible dans l'appareil (1) et de reporter le processus de lavage au prochain processus de séchage en l'absence d'une quantité de fluide suffisante disponible dans l'appareil (1).
  3. Appareil (1) selon la revendication 1 ou 2, caractérisé en ce que l'électronique de commande (6) est aménagée afin d'exécuter le processus de lavage pour le lavage du condenseur (8) durant des processus de séchage entre lesquels au moins dix, en particulier au moins vingt et au maximum deux cents, en particulier au maximum cent processus de séchage sans lavage correspondant du condenseur (8) se trouvent.
  4. Procédé d'exploitation d'un appareil (1) de séchage du linge, dans lequel l'appareil (1) présente au moins un système d'air de processus (3), au moins une pompe à chaleur (7) couplée thermiquement au système d'air de processus (3) et au moins un dispositif de lavage (13) pour le lavage d'un évaporateur (9) de la pompe à chaleur (7), au moins une unité de lavage (20) pour le lavage d'un condenseur (8) de la pompe à chaleur (7), dans lequel durant des processus de séchage non consécutifs respectivement un processus de lavage pour le lavage de l'évaporateur (9) est remplacé par un processus de lavage pour le lavage du condenseur (8), caractérisé en ce que le processus de lavage pour le lavage du condenseur (8) est exécuté à partir de l'atteinte d'un degré de séchage du linge prédéfini.
  5. Procédé selon la revendication 4, caractérisé en ce qu'il est déterminé si une quantité de fluide suffisante est disponible dans l'appareil (1) pour le processus de lavage pour le lavage du condenseur (8) et ce processus de lavage est exécuté lorsqu'une quantité de fluide suffisante est disponible dans l'appareil (1) et le processus de lavage est reporté au prochain processus de séchage en l'absence d'une quantité de fluide suffisante disponible dans l'appareil (1).
  6. Procédé selon la revendication 4 ou 5, caractérisé en ce que le processus de lavage pour le lavage du condenseur (8) est exécuté durant des processus de séchage entre lesquels au moins dix, en particulier au moins vingt et au maximum deux cents, en particulier au maximum cent processus de séchage sans lavage correspondant du condenseur (8) se trouvent.
EP19156018.4A 2018-02-16 2019-02-07 Appareil de séchage de linge et procédé de fonctionnement d'un tel appareil Active EP3527712B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19156018T PL3527712T3 (pl) 2018-02-16 2019-02-07 Urządzenie do suszenia prania i sposób eksploatacji takiego urządzenia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018202379.4A DE102018202379A1 (de) 2018-02-16 2018-02-16 Gerät zum Trocknen von Wäsche und Verfahren zum Betreiben eines solchen Geräts

Publications (2)

Publication Number Publication Date
EP3527712A1 EP3527712A1 (fr) 2019-08-21
EP3527712B1 true EP3527712B1 (fr) 2021-12-01

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EP19156018.4A Active EP3527712B1 (fr) 2018-02-16 2019-02-07 Appareil de séchage de linge et procédé de fonctionnement d'un tel appareil

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EP (1) EP3527712B1 (fr)
CN (1) CN110158292B (fr)
DE (1) DE102018202379A1 (fr)
PL (1) PL3527712T3 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101192047B1 (ko) * 2009-11-30 2012-10-17 위니아만도 주식회사 의류건조기
JP6191013B2 (ja) * 2014-02-07 2017-09-06 パナソニックＩｐマネジメント株式会社 洗濯乾燥機
DE102016200845A1 (de) 2016-01-21 2017-07-27 BSH Hausgeräte GmbH Verfahren zum Betrieb eines Trockners mit einer Wärmepumpe und Spülung eines Wärmetauschers und hierfür geeigneter Trockner
CN107641947A (zh) * 2016-07-20 2018-01-30 青岛海尔洗衣机有限公司 热泵换热系统、热泵洗干一体机或干衣机、自动清洗方法
CN106480676B (zh) * 2016-10-28 2019-07-19 无锡小天鹅股份有限公司 干衣机和用于干衣机的蒸发器组件
CN106868825B (zh) * 2017-02-06 2019-10-25 无锡小天鹅电器有限公司 干衣机及其清洗控制方法

Also Published As

Publication number Publication date
PL3527712T3 (pl) 2022-04-04
EP3527712A1 (fr) 2019-08-21
CN110158292B (zh) 2023-03-14
CN110158292A (zh) 2019-08-23
DE102018202379A1 (de) 2019-08-22

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