EP2895651B1 - Appareil ménager avec un dispositif de guidage de liquide - Google Patents

Appareil ménager avec un dispositif de guidage de liquide Download PDF

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Publication number
EP2895651B1
EP2895651B1 EP13759798.5A EP13759798A EP2895651B1 EP 2895651 B1 EP2895651 B1 EP 2895651B1 EP 13759798 A EP13759798 A EP 13759798A EP 2895651 B1 EP2895651 B1 EP 2895651B1
Authority
EP
European Patent Office
Prior art keywords
liquid
guiding device
process air
home appliance
outlet
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
EP13759798.5A
Other languages
German (de)
English (en)
Other versions
EP2895651A1 (fr
Inventor
Alberto Bison
Giuseppe Rossi
Nicola Reid
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP13759798.5A priority Critical patent/EP2895651B1/fr
Priority to EP20172502.5A priority patent/EP3730690A1/fr
Priority to EP20172507.4A priority patent/EP3725939B1/fr
Priority to PL13759798T priority patent/PL2895651T3/pl
Publication of EP2895651A1 publication Critical patent/EP2895651A1/fr
Application granted granted Critical
Publication of EP2895651B1 publication Critical patent/EP2895651B1/fr
Active legal-status Critical Current
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Classifications

    • 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 
    • D06F58/22—Lint collecting 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
    • 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
    • D06F2105/02—Water supply
    • 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
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/45—Cleaning or disinfection of machine parts, e.g. of heat exchangers or filters

Definitions

  • the invention relates to a home appliance, in particular to a laundry treatment apparatus, a dish washer, a dryer or a washing machine, comprising a liquid guiding device.
  • WO 2009/077291 A1 discloses a laundry treatment apparatus comprising a cleaning device for cleaning a component (e.g. a heat exchanger) of the laundry treatment apparatus from fluff or lint.
  • the cleaning unit has a rinsing unit by means of which rinsing fluid can be conducted to the component for removing fluff wherein the rinsing unit has a flow element which is disposed above the component and is configured for building up of dynamic pressure of the rinsing fluid in the flow element.
  • EP 1 055 767 A1 discloses a section of a drying air conduit which is flooded during a cleaning phase when a fan generating an air current is switched off. The section is flooded with a liquid which is removed at the end of the cleaning phase.
  • WO 2005/090670 A2 and WO 2012/085839 disclose a laundry washing and drying machine wherein a conduit for driving drying air is attached to an outer side of a movable tub of washing group. A fluid path is provided within the drying air conduit.
  • a home appliance in particular a laundry treatment apparatus, a dish washer, a dryer or a washing machine, comprises an articles treatment chamber and a process air channel for guiding process air to and/or from the articles treatment chamber for treating the articles (e.g.
  • a liquid guiding device having an inlet and an outlet, wherein the liquid guiding device is adapted to guide liquid from the inlet to the outlet, wherein the outlet is adapted to direct the liquid to a component and/or to a predefined location of the appliance and wherein the liquid guiding device is formed by and is a portion of the process air channel characterised in that the liquid guiding device comprises at least one guiding shell formed in a process air channel section and the process air channel section is one or more of the following:
  • This geometric construction offers a space-saving reduced dimensional extension (e.g. height) of the liquid guiding device as it serves also as a common wall element of other portions within the home appliance.
  • the liquid guiding device and the process air channel can be arranged in a space-saving manner within the home appliance cabinet.
  • one side of the liquid guiding device is in contact with the liquid and the other side is at least partially in contact with the process air.
  • the process air usually is circulated process air or process air sucked in as ambient or external air and exhausted from/to outside the home appliance or home appliance cabinet.
  • Liquid guiding device's additional function as part of the process air channel or inversely regarded process air channel's additional function as part of the liquid guiding device supports a simple arrangement and mounting of these parts within the home appliance cabinet. It also may save material and/or assembling time.
  • the design of the liquid guiding device can be configured very simple there is no flow restriction for the liquid thus allowing a very fast speed of the liquid and a higher/greater liquid flow is possible and consequently an efficient cleaning of the predefined component surface or location.
  • the liquid guiding device comprises a shell-like construction.
  • at least one guiding shell is simultaneously part of the process air channel and the other shell(s) are separate parts or elements before assembling the home appliance.
  • said guiding shells can be manufactured or formed in separate molding tools and molding processes.
  • the liquid guiding device is formed or is essentially formed of two or more guiding shells. This construction enhances a simple production of the complete liquid guiding device. If the liquid guiding device comprises two or essentially two shells then the shells can constitute an upper part and a lower part or a left and a right part of the liquid guiding device.
  • the laundry treatment apparatus is a heat pump tumble dryer or a washing machine with a drying function.
  • Said tumble dryer or washing machine comprises a heat pump system, including at least one heat exchanger acting as evaporator for evaporating a refrigerant and/or cooling process air.
  • the process air flow within the heat pump dryer is guided through a compartment of the dryer, i.e. through a compartment for receiving articles to be treated, e.g. a drum.
  • the process air flow is usually driven by a process air blower.
  • a process air channel guides the process air flow outside the drum and includes different sections, including a section forming a battery channel in which the at least one heat exchanger is arranged.
  • the air exiting the drum through the drum outlet (which is the loading opening of the drum) is filtered preferably by a fluff filter arranged close to the drum outlet in or at the process air channel.
  • the home appliance is a laundry treatment apparatus, particularly a dryer or a washing machine, wherein the articles treatment chamber is a laundry treatment chamber or a drum, and wherein the process air channel is formed as a process air circuit for circulating the process air through the laundry treatment chamber or drum or the process air channel is formed to guide the process air to and/or from the treatment chamber.
  • this laundry treatment apparatus comprises a heat exchanger unit arranged within the process air channel.
  • said heat exchanger unit comprises a first heat exchanger adapted to cool the process air and a second heat exchanger adapted to heat the process air.
  • the first heat exchanger or the second heat exchanger or both (the first and second) heat exchangers are arranged in a channel section or a battery channel of the process air channel.
  • the liquid guiding device is partially formed in and by a section of the channel section or the battery channel thus supporting a compact construction of the laundry treatment apparatus.
  • the home appliance may have a cooling air / process air heat exchanger (e.g. condensate dryer without heat pump) where cooling air is for example ambient air.
  • the process air channel is provided such as to circulate the process air to and from the treatment chamber.
  • a vented dryer e.g. without heat pump system
  • the process air channel is used which does not provide a closed circuit and the process air channel guides the process air to and/or from the treatment chamber with an outlet or inlet of the treatment apparatus cabinet.
  • the component to be cleaned is a heat exchanger or a fluff filter and the outlet of the liquid guiding device is designed to clean at least a portion of the heat exchanger or at least a portion of the fluff filter by directing the liquid or liquid spray thereto during its cleaning operation.
  • the liquid or liquid spray is directed to the front side or process air entrance face of the heat exchanger or of a fluff filter to ensure an efficient cleaning of the component desired to be cleaned.
  • the liquid guiding device comprises at least one guiding shell formed in a process air channel section, wherein said process air channel section comprises at least one of the following features thus reducing the number of assembling parts and/or the assembling efforts:
  • the process air channel section is part of a stationary articles treatment chamber, the latter, for example, is provided when the articles treatment chamber is a container of a dishwasher.
  • the home appliance according to the invention may comprise a further guiding shell which is placed at the inside or the outside of the process air channel such as to provide the liquid guiding device at the interior or the exterior of the process air channel.
  • the process air channel preferably comprises a wall opening and the liquid guiding device is forming a closing or wall element such that when the liquid guiding device is inserted in the wall opening the process air channel is closed, sealed or covered at the wall opening.
  • This construction supports an automatic sealing of the process air channel in the region of the liquid guiding device by simply mounting the liquid guiding device itself. Mounting of the liquid guiding device at the wall opening can be configured removable or non-removable.
  • the liquid guiding device is a self-closed component (e.g. a blow-mold tube) or comprising two or more shells that are connected to each other in a liquid-sealing manner).
  • This self-closed component interacts with an opening of the process air channel.
  • the liquid guiding device is fixed at said opening in a sealing manner such that the opening of the process air channel is sealed against potential process air escape.
  • first and second guiding shells there is preferably foreseen one or more alignment elements which is or are arranged at the first guiding shell or at the second guiding shell or at both guiding shells.
  • the alignment elements may be of an inter-alignment type and/or an external-alignment type.
  • the external-alignment type provides an alignment of the liquid guiding device (before or after assembling the liquid guiding device) the alignment with respect to a component of the home appliance where the liquid guiding device is to be mounted to.
  • This alignment offers a mounting guidance for a simple mounting of the liquid guiding device.
  • Said alignment element(s) ensure(s) a precise alignment of the liquid guiding device towards a defined position within the home appliance, e.g.
  • the inter-alignment type of alignment elements is used to adjust the two or more shells relative to each other during the assembling step for assembling the liquid guiding device.
  • an alignment element can be configured as a slot, rim, latch, snap-fit and/or bracket or as a similar element for designing a removable or non-removable connection between the guiding shells.
  • a portion of a flow direction extension of the liquid guiding device is extending parallel to the process air channel of the home appliance or parallel to the process air channel portion or parallel to the flow direction within the process air channel.
  • the flow direction extension of the liquid guiding device is consistent with a longitudinal extension according to the mean or main (center) liquid flow direction.
  • at least X% of the longitudinal extension of the liquid guiding device is parallel to the process air channel, whereby X is one of the values 50, 60, 70, 80 or 90.
  • the liquid guiding device has an inlet and an outlet.
  • the liquid guiding device is adapted to guide liquid from the inlet to the outlet wherein the outlet is adapted to direct the liquid to a component (e.g. a heat exchanger) of the appliance and/or to a predefined location of the appliance.
  • the liquid guiding device defines a cross section area constituting a liquid passage area for guiding the liquid.
  • this cross section area has an increasing first cross section dimension and a decreasing second cross section dimension along the flow direction from the inlet to the outlet in a way such that the cross section area is not decreasing from the inlet to the outlet, i.e. along the flow path of the liquid. Avoiding a decreasing cross section area means that the cross section area can be configured constant or increasing or slightly increasing along the flow direction.
  • the aforementioned geometry of the cross section area along the flow direction is configured to avoid a build-up of dynamic pressure of the liquid within the liquid guiding device. Bottlenecks are also avoided between the inlet and outlet. Thus, manufacturing of a cost-saving simple geometric construction of the liquid guiding device is supported. Furthermore, such a geometry of the cross section area allows a reduced flow resistance of the liquid thus a lower pumping power is required. Since there is a reduced or no flow restriction, a higher/greater liquid flow rate is possible.
  • the change of the cross section area between the inlet and outlet is designed such that the liquid dynamic pressure and/or the liquid velocity does not change or at least does not increase along the flow path from the inlet to the outlet. Since the dynamic pressure and the liquid velocity are in a physical relationship, also the liquid velocity is controlled advantageously.
  • first and second cross section dimensions are mathematical perpendicular to the main or mean or main liquid flow, i.e. the first and second cross section dimensions are mathematical perpendicular to each other and to a mathematical main axis of the liquid flow path.
  • the cross section areas of the liquid channel can be defined as planes perpendicular to the main or mean liquid flow direction at each point along the course or line of the mean flow direction. These planes each is spanned by a first cross section dimension which is arranged orthogonal to the liquid flow direction and by a second cross section dimension which is arranged orthogonal to the liquid flow direction and simultaneously orthogonal to the first cross section dimension.
  • the cross section area is particularly increasing in the first cross section dimension and is decreasing in the second cross section dimension. This increasing and decreasing occurs in a manner such that the value of the cross section area or liquid passage area is not decreasing from the inlet to the outlet.
  • there exist mathematical cross section areas and the value of these mathematical areas does not decrease from the inlet to the outlet. Particularly, said value increases or is constant along the liquid flow direction.
  • the aforementioned dimensions are lying on a plane that is perpendicular to the main or mean or central liquid flow, and their variation is measured in the sense of the main or mean or central liquid flow. If one dimension decreases, this variation has to be compensated by the increasing of a second dimension, in such a way that the area of the cross section of the channel stream inside the channel will surely not decrease.
  • the cross section area of the liquid guiding device is constant along the flow direction from the inlet to the outlet.
  • a first dimension of the cross section area is defined as a height and a second dimension of the cross section area is defined as a width. Then the product of said height and width is constant.
  • the liquid guiding device has an outlet forming a nozzle or at least comprising a nozzle.
  • a nozzle-like outlet region supports an even distribution of the liquid spray.
  • the nozzle can be provided as a separate part connectable to the rest of the liquid guiding device.
  • the nozzle is a monolithic or unitary part of the liquid guiding device at its outlet region.
  • the outlet of the liquid guiding device comprises a slit-like shape which facilitates a good spatial or two-dimensional adaptation to the component surface or predefined location to be cleaned.
  • the outlet may be formed of 2, 3, 4, 5 or more discontiguous separated areas - while at the same time the requirement of constant, slightly increasing or increasing cross-section area is maintained in flow direction (from inlet to outlet).
  • a hopper of funnel shaped branch of the liquid guiding device is provided which opens towards the partial area.
  • the outlet region of the liquid guiding device is forming a nozzle and/or is bent to deflect the liquid in the outlet region.
  • this nozzle region and/or bent outlet region is particularly formed at a first side by a first one of the guiding shells being separate of the process air channel and at a second or opposing side by a second one of the guiding shells being formed by the process air channel.
  • the desired nozzle region and/or bent region at the outlet region can be assembled simply block-like.
  • the end outlet region of the liquid guiding device is bent in such a manner that the liquid flow is changed in the end region of its outlet according to a predefined direction.
  • directing the liquid or liquid spray to the component surface or location to be cleaned is realized by a simple construction.
  • an outer end section of the outlet or outlet region of the liquid guiding device is formed as or at least comprises a deflecting element which is adapted to deflect the liquid at the outlet. This deflecting element even enhances an efficient directing or alignment of the liquid to the component or location to be cleaned by the liquid.
  • the aforementioned deflecting element and expanding element are foreseen simultaneously at the outlet.
  • the liquid guiding device comprises at least one deflector wall inside its housing extending towards the outlet region of the liquid guiding device.
  • the at least one deflector wall supports an even flow of the liquid towards the outlet region of the liquid guiding device.
  • the at least one deflector wall is arranged perpendicular to a plane section of the liquid guiding device spanned by the liquid flow direction and the first cross section dimension.
  • the at least one deflector wall is advantageously formed integrally, particularly monolithic, at one or more of the inner sides of the liquid guiding device's housing thus offering a stable arrangement of the deflector walls.
  • the liquid guiding device carries means for generating a whirl flow and turbulences within the liquid flowing towards the surface, component or location to be cleaned.
  • These whirl flow means are arranged at the outlet region outside the outlet itself. Liquid flowing out of the outlet passes these whirl flow means thus causing turbulences and whirling within the liquid for an enhanced removing of fluff from the surface, component or location to be cleaned.
  • the whirl flow means comprise a row of outlet ribs extending essentially along the flow direction of the liquid after passing the outlet.
  • at least some of the outlet ribs are arranged equidistant to each other.
  • the liquid guiding device is planar from the inlet to the outlet regarded in one or two cross-section planes along the main flow direction. In case of two cross-section planes these planes are regarded as perpendicular to each other. This planar geometry of the liquid guiding device facilitates its space-saving arrangement within the home appliance.
  • the inlet and outlet of the liquid guiding device are arranged in alignment in such a manner that the design of the liquid guiding device is made symmetrically with regard to a symmetry axis lying in a cross section plane along the mean or main liquid flow direction.
  • the design of the liquid guiding device is configured asymmetrically with regard to said cross section plane along the mean or main liquid flow direction.
  • the center of the inlet and outlet of the liquid guiding device are not in alignment along the mean or main liquid flow direction.
  • the home appliance comprises more than one liquid guiding device each having an inlet and outlet.
  • Arranging at least two liquid guiding devices it is possible to switch and partial split the liquid flow pressure and/or flow rate towards several partial surfaces of a whole or full surface to be cleaned thus increasing the liquid flow pressure and/or flow rate towards the partial surfaces as compared to a full surface cleaning.
  • a smart usage of cleaning liquid can be provided by increasing the local cleaning efficiency.
  • the arrangement of several liquid guiding devices can be supplemented by installing one or more control valves upstream the inlets of the liquid guiding devices. Controlling the at least one control valve allows a cleaning of a partial portion of a component or predefined location by only one liquid guiding device if desired or necessary.
  • liquid guiding devices In case at least two liquid guiding devices are used within the home appliance it is possible to use only a symmetric design or only an asymmetric design of liquid guiding devices. Preferably, the geometry of all used liquid guiding devices is identical. Using at least one asymmetric liquid guiding device supports a space-saving arrangement of the whole group of liquid guiding devices.
  • a space-saving arrangement of the liquid guiding device is even enhanced by its preferred extension across one dimension of the process air channel section which is housing at least one heat exchanger (e.g. a sole heat exchanger of the home appliance or a first and second heat exchanger).
  • the process air channel section which is housing at least one heat exchanger (e.g. a sole heat exchanger of the home appliance or a first and second heat exchanger).
  • the liquid guiding device is designed such that its longitudinal extension is extending parallel to a flow direction through at least one heat exchanger (e.g. a sole heat exchanger of the home appliance or a first and second heat exchanger).
  • a heat exchanger e.g. a sole heat exchanger of the home appliance or a first and second heat exchanger.
  • the process air channel has preferably at least one opening at the outlet end of the guiding shell formed in the process air channel.
  • This construction design ensures passing of flown liquid through the liquid guiding device to the interior of the process air channel, particularly to a heat exchanger or evaporator arranged inside of the process air channel.
  • the process air channel has preferably a supply opening or supply connector. This preferred design ensures a supply of liquid from the outside to the inside of the process air channel at the inlet region of the liquid guiding device.
  • the liquid guiding device and the process air channel are designed in such a manner that the main direction of the liquid flow in the liquid guiding device and the main flow direction of the process air in the process air channel are parallel or anti-parallel to each other.
  • the inlet of the liquid guiding device is located at a condensate pump or a condensate container as a liquid supply for the inlet thus offering a liquid supply which is existing anyway in a conventional home appliance.
  • the outlet of the liquid guiding device is located to a front side or process entrance side of a heat exchanger arranged in the process air channel.
  • This arrangement of the outlet in relationship with said front side or process entrance side permits an efficient cleaning of said front side or process entrance side thus ensuring a high heat exchange performance.
  • the inlet of the liquid guiding device is connectable or is connected to one or more of the following liquid supplies: an intermediate liquid tank, a condensate collection reservoir arranged in the basement of the home appliance, a removable condensate collection tank.
  • the removable condensate collection tank is arranged in an upper region of the home appliance. In case of using said condensate collection tank it is possible in certain application cases to avoid installing a separate pump for supplying the liquid to the inlet due to the gravitation force of supplied liquid.
  • a pump for pumping the liquid to the liquid guiding device is arranged between said liquid supply (e.g. intermediate liquid tank and/or condensate collection reservoir and/or removable condensate collection tank) and the liquid guiding device.
  • said liquid supply e.g. intermediate liquid tank and/or condensate collection reservoir and/or removable condensate collection tank
  • the aforementioned liquid supplies already exist within the home appliance performing conventional tasks (e.g. condensate collecting and transporting).
  • a liquid supply exclusively storing liquid for cleaning or liquid to be supplied to the liquid guiding device (e.g. said intermediate liquid tank).
  • said pump or said removable condensate collection tank is arranged at an upper section of the home appliance and the liquid guiding device is arranged in a basement thereof.
  • a liquid conduit is preferably used to achieve a simple liquid connection between said pump or tank and the liquid guiding device.
  • Fig. 1 shows a schematically depicted laundry treatment apparatus 2 which in this embodiment is a heat pump tumble dryer.
  • the tumble dryer or treatment apparatus 2 comprises a heat pump system 4, including a closed refrigerant loop 6 which comprises in the following order of refrigerant flow B: a first heat exchanger 10 acting as evaporator for evaporating the refrigerant and cooling process air, a compressor 14, a second heat exchanger 12 acting as condenser for cooling the refrigerant and heating the process air, and an expansion device 16 from where the refrigerant is returned to the first heat exchanger 10.
  • the heat pump system forms the refrigerant loop 6 through which the refrigerant is circulated by the compressor 14 as indicated by arrow B.
  • the process air flow within the treatment apparatus 2 is guided through a compartment 18 of the home appliance 2, i.e. through a compartment for receiving articles to be treated, e.g. a drum 18.
  • the articles to be treated are textiles, laundry 19, clothes, shoes or the like.
  • the process air flow is indicated by arrows A in Fig. 1 and is driven by a process air blower 8.
  • the process air channel 20 guides the process air flow A outside the drum 18 and includes different sections, including the section forming the battery channel 20a in which the first and second heat exchangers 10, 12 are arranged.
  • the process air exiting the second heat exchanger 12 flows into a rear channel 20b in which the process air blower 8 is arranged.
  • the air conveyed by blower 8 is guided upward in a rising channel 20c to the backside of the drum 18.
  • the air exiting the drum 18 through the drum outlet (which is the loading opening of the drum) is filtered by a fluff filter 22 arranged close to the drum outlet in or at the channel 20.
  • the optional fluff filter 22 is arranged in a front channel 20d forming another section of channel 20 which is arranged behind and adjacent the front cover of the treatment apparatus 2.
  • the condensate formed at the first heat exchanger 10 is collected and guided to the condensate collector 30.
  • the condensate collector 30 is connected via a drain pipe 46, a filter element 24, a drain pump 36, a valve 38 and a drawer pipe 50 to an extractable condensate drawer 40.
  • the collected condensate can be pumped from the collector 30 to the drawer 40 (serving as a removable tank) which is arranged at an upper portion of the treatment apparatus 2 from where it can be comfortably withdrawn and emptied by a user.
  • a liquid guiding device 41 is provided close to the heat exchanger 10.
  • the condensate collector 30 is connected via the drain pipe 46, the drain pump 36, the valve 38 and a feed pipe 48 to the cleaning device 41, wherein the drain pump 36 and the valve 38 are controlled by a control unit of the apparatus 2.
  • a circulation pump (not explicitly shown in the figures) is provided to pump condensate from the collector 30 to the liquid guiding device 41 - i.e. the circulation pump is provided additionally to the drain pump 36.
  • Fig. 2 shows a perspective view of the liquid guiding device 41 according to a first embodiment.
  • the liquid guiding device 41 comprises an inlet 52 (inlet region) and an outlet 54 (outlet region).
  • the liquid guiding device 41 guides liquid through a liquid channel 57 from the inlet 52 to the outlet 54.
  • a mean or main flow of liquid along the device 41 is indicated.
  • the liquid guiding device 41 can be denoted or considered as liquid channel.
  • the liquid guiding device has an inner hollow space which - in operation - is filled by the flowing liquid from the inlet 52 to the outlet 54. The inner space is restricted by the inner surfaces of the walls formed by the device 41.
  • the cross section areas C (C1..5) - which constitute a liquid passage area respectively - of the liquid channel 57 can be defined as planes perpendicular to the main or mean liquid flow direction 56 at each point along the course or line of the mean flow direction. These planes each is spanned by a first cross section dimension D1 which is arranged orthogonal to the liquid flow direction 56 and by a second cross section dimension D2 which is arranged orthogonal to the liquid flow direction 56 and simultaneously orthogonal to the first cross section dimension D1.
  • the cross section area C is increasing in the first cross section dimension D1 and is decreasing in the second cross section dimension D2 ( Fig. 4 ).
  • a longitudinal section plane can be represented by the main liquid flow direction 56 and the first cross section dimension D1.
  • Another longitudinal section plane can be represented by the main liquid flow direction 56 and the second cross section dimension D2.
  • At least in partial sections along the liquid path between the inlet 52 and the outlet 54 of the liquid channel 57 the inner wall surface and preferably also the outer wall surface of the liquid guiding device 41 is substantially planar with regard to the said one or two longitudinal cross section plane(s).
  • the outlet region 54 comprises a slit 58 with preferably or substantially rectangular cross section ( Fig. 2 , Fig. 5 ).
  • the slit 58 conforms to a nozzle outlet 60 of a nozzle 62.
  • the nozzle 62 comprises a nozzle inlet 64.
  • the nozzle 62 is part of the whole liquid guiding device 41. It can be constituted monolithic or unitary with the liquid guiding device 41. Alternatively, nozzle 62 is connectable as an originally separate part to the rest of the liquid guiding device 41 during the assembly of the apparatus 2.
  • the nozzle 62 its nozzle outlet 60 defines a nozzle cross section which - according to the described principle - is not smaller than a cross section area of the liquid guiding device 41 positioned upstream to said nozzle cross section with respect to the liquid flow direction 56. Rather, the nozzle cross section has a value equal with the cross section area C5 or larger than this cross section area C5 ( Fig. 3 ).
  • the liquid guiding device 41 is bent in its outlet region 54 by the specific geometric design of the nozzle 62 ( Fig. 5 ).
  • the nozzle 62 allows a change of the liquid flow direction 56 in the outlet region 54.
  • Fig. 6 shows the nozzle 62 according to Fig. 5 .
  • the bent design corresponds to a circular angle of 90°. Accordingly, the liquid flow direction 56 changes approximately 90° at the nozzle outlet 60. By means of a different nozzle designs the liquid flow direction 56 changes less than 90° ( Fig. 7 ) or more than 90° ( Fig. 8 ).
  • Fig. 9 shows an embodiment of a nozzle 62 comprising a nozzle outlet 60 which is trumpet-like expanded as compared to the nozzle inlet 64.
  • the nozzle outlet 60 has a bent course in direction to the original liquid flow direction 56.
  • the liquid flow direction 56 has changed at the nozzle outlet 60 about 90° whereby the bent course of the nozzle 62 between its nozzle inlet 64 and nozzle outlet 60 is configured meander-like.
  • Fig. 12 shows a liquid guiding device 41 comprising a wall-like deflecting element 66 which causes a deflection of the liquid at the outlet 54.
  • the deflecting element 66 is directed in a plane approximately perpendicular to the origin liquid flow direction 56 and extends beyond the nozzle outlet 60. Thereby spraying the liquid towards the rear side (opposite to the forward flow of the liquid in most part of the device 41) is preferred and there is no loss of liquid away from the heat exchanger 10 front side (compare Fig. 26 ).
  • Fig. 13 shows a wall-like or roof-like deflecting element 66 according to a further embodiment.
  • the deflecting element 66 is again directed in a plane approximately perpendicular to the origin liquid flow direction 56. It extends downwards beyond the outlet region 54 of the liquid guiding device 41 and is arranged at the end of an outlet bar 68 extending along the original liquid flow direction 56.
  • this nozzle 62 forms an outlet 54 with liquid flow expanding and deflecting function.
  • the embodiment of the liquid guiding device 41 according to Fig. 14 comprises several deflector walls 67.
  • the deflector walls 67 are arranged inside the housing 69 of the liquid guiding device 41. Therefore, the all in all four deflector walls 67 are indicated by dashed lines as hidden parts.
  • the deflector walls 67 extend along the mean or main liquid flow direction 56 towards the outlet region 54 of the liquid guiding device 41, thus dividing the slit 58 into five slit sections 59 having different extensions along the first cross section dimension D1.
  • the deflector walls 67 are arranged perpendicular to a plane section of the liquid guiding device 41 spanned by the liquid flow direction 56 and the first cross section dimension D1 ( Fig. 15 ).
  • the deflector walls 67 are integrally, particularly monolithic, formed at the inner sides of the housing 69 of the liquid guiding device 41.
  • the deflector walls 67 support an even flow of the liquid towards the outlet region 54.
  • the liquid guiding device 41 carries means for generating a whirl flow and turbulences within the liquid flowing towards the surface or location to be cleaned.
  • These means are arranged at the outlet region 54 outside the nozzle 62 and comprise a row of outlet ribs 65 ( Fig. 16 ).
  • the outlet ribs 65 extend essentially along the second cross section dimension D2 and are arranged equidistant to each other along the first cross section dimension D1 ( Fig. 17 ). Liquid flowing out of the outlet 54 passes the outlet ribs 65 thus causing turbulences and whirling within the liquid for an enhanced removing of fluff from the surface or location to be cleaned.
  • Fig. 18 shows a sectional perspective view of a base section 5 or basement of the treatment apparatus comprising an upper shell 70 and a corresponding lower shell 72.
  • the lower shell 72 and the upper shell 70 at least partially form the process air channel 20.
  • shells 70, 72 together form the battery channel 20a indicated in Fig. 1 , wherein the first and second heat exchangers 10, 12 are arranged within the battery channel 20a.
  • the upper shell 70 and the liquid guiding device 41 at least partially serve as a cover or casing for the battery channel 20a and consequently for the process air channel 20.
  • the liquid guiding device 41 is part or portion of the process air channel 20.
  • Liquid is supplied to the inlet 52 of the liquid guiding device 41 and then to the outlet 54 via the liquid channel 57. At the outlet region 54 the liquid is directed to the wall-like deflecting element 66 and is deflected there towards the front surface 74 of the first heat exchanger 10. The liquid or liquid spray sweeps along the front surface 74 thus cleaning the heat exchanger 10 from fluff.
  • the deflecting element 66 is part of the upper shell 70 of the base section 5 and not an integral portion of the conduit outlet 54 according to Fig. 12 and Fig. 13 .
  • Fig. 19 shows additionally a conduit corresponding to the feed pipe 48.
  • Fig. 20 shows the upper shell 70 of the basement 5 with a liquid guiding device 41 according to a first embodiment of assembling the liquid guiding device 41. It is formed essentially of two guiding shells, a first guiding shell 78 and a second guiding shell 76.
  • the second guiding shell 76 is formed integrally at the upper shell 70 and consequently in a section of the process air channel 20.
  • the separate first guiding shell 78 is placed and mounted at the inside of the upper shell 70 and consequently at the inside of the process air channel 20 (specifically the battery channel 20a) in order to provide the completed liquid guiding device 41at the interior of the process air channel 20.
  • Fig. 21 shows the aforementioned inside mounting of the lower and separate first guiding shell 78 by directing it along a mounting direction M to the upper second guiding shell 76 integrally arranged at the upper shell 70 in order to fix the shell 78 to the shell 76.
  • the liquid guiding device 41 After assembling both shells 76, 78 to each other the liquid guiding device 41 is in a post-assembling position or state ( Fig. 22 ).
  • This inside ceiling attachment has the advantage that in case of liquid leaks along the joining line between shells 76, 78 the leaking liquid is collected within the battery channel 20a which forms at its bottom part (bottom shell 72) the condensate collector 30 shown in Fig. 1 and Fig. 18 . Thus no liquid can come in contact with electrical parts or the interior of dryer 2 outside the process air channel 20.
  • the upper shell 70 carries integrally the second guiding shell 76 which is configured to be covered by the first guiding shell 78 at the outer side or exterior of the battery channel 20a.
  • a liquid guiding device 41 forms a closing or wall element when inserting the assembled (complete) liquid guiding device 41 ( Fig. 25 ) in a further assembling step in a wall opening 82 of the battery channel 20a.
  • the process air channel 20 is automatically closed, covered and particularly sealed at the wall opening 82 during assembling the liquid guiding device 41.
  • the opening 82 is closed by the device 41.
  • the process air flow B through the battery channel 20a is parallel but opposite to the main flow 56 of the liquid through the extended or most part of the liquid guiding device 41.
  • Fig. 27 shows a section of a liquid conduit 34 (as an alternative to the feed pipe 48) to supply the liquid guiding device 41 with liquid.
  • the section of the liquid conduit 34 which is immediately upstream the inlet 52 is vertical and coming from above.
  • Fig. 28 a symmetric arrangement of two liquid guiding devices 41 is foreseen at the upper shell 70 of the basement 5.
  • Fig. 29 shows an asymmetric arrangement of two liquid guiding devices 41 which have a different design.
  • the aforementioned arrangements of two liquid guiding devices 41 can be supplemented by installing a control valve 84 between the devices 41 and the condensate container ( Fig. 30, Fig. 31 ).
  • Controlling the control valve 84 allows a cleaning of a partial portion of the heat exchanger 10 (or another desired component/location) by only one device 41 if desired or necessary.
  • cleaning of a component requires at least two actions, namely to supply the liquid to the left/right front surface 74 of the heat exchanger 10.
  • this switching and partial splitting the liquid flow pressure and/or flow rate towards the partial surfaces is increased as compared to a full surface cleaning in the embodiments above.
  • a smart usage of cleaning liquid can be provided by increasing the local cleaning efficiency.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (23)

  1. Appareil ménager, en particulier appareil de traitement du linge, lave-vaisselle, sèche-linge (2) ou machine à laver, l'appareil ménager comprenant :
    une chambre de traitement d'articles (18),
    un canal d'air de traitement (20) pour guider l'air de traitement (A) vers ou depuis la chambre de traitement d'articles (18) afin de traiter les articles (19) à l'aide de l'air de traitement (A),
    dispositif de guidage de liquide (41) ayant une entrée (52) et une sortie (54),
    le dispositif de guidage de liquide (41) étant conçu pour guider le liquide de l'entrée (52) vers la sortie (54),
    la sortie (54) étant conçue pour diriger le liquide vers un composant (10) de l'appareil (2) et/ou vers un emplacement prédéfini de l'appareil (2), et
    le dispositif de guidage de liquide (41) étant formé par et étant une partie du canal d'air de traitement (20)
    caractérisé en ce que
    le dispositif de guidage de liquide (41) comprend au moins une enveloppe de guidage (76) formée dans une section de canal d'air de traitement (20a) et la section de canal d'air de traitement (20a) étant :
    une partie de l'enveloppe de socle d'appareil ménager (5, 70, 72),
    l'enveloppe de couverture (70) du socle d'appareil ménager (5) accueillant, au moins partiellement, au moins un échangeur de chaleur (10, 12) échangeant de la chaleur entre deux écoulements d'air,
    une partie d'un canal de batterie de pompe à chaleur (20a),
    une partie d'une enveloppe inférieure d'appareil ménager (72), et/ou
    une partie d'une chambre de traitement d'articles (18) fixe.
  2. Appareil ménager selon la revendication 1, le dispositif de guidage de liquide (41) étant formé ou étant essentiellement formé d'au moins deux enveloppes de guidage (76, 78, 80) .
  3. Appareil ménager selon la revendication 1 ou 2,
    l'appareil ménager étant un appareil de traitement du linge, en particulier un sèche-linge (2) ou une machine à laver,
    la chambre de traitement d'articles étant une chambre de traitement du linge ou un tambour (18),
    le canal d'air de traitement (20) étant formé comme un circuit d'air de traitement pour faire circuler l'air de traitement (A) à travers la chambre de traitement du linge ou le tambour (18) ou étant formé pour guider l'air de traitement vers ou depuis la chambre de traitement du linge,
    une unité d'échangeur de chaleur étant disposée dans le canal d'air de traitement comprenant un premier échangeur de chaleur (10) conçu pour refroidir l'air de traitement (A) et un second échangeur de chaleur (12) conçu pour chauffer l'air de traitement (A), et
    le premier échangeur de chaleur (10), le second échangeur de chaleur (12), ou les premier et second échangeurs de chaleur (10, 12) étant disposés dans une section de canal (20) ou un canal de batterie (20a) du canal d'air de traitement et le dispositif de guidage de liquide (41) étant partiellement formé dans et par une section de la section de canal (20) ou du canal de batterie (20a).
  4. Appareil ménager selon l'une quelconque des revendications précédentes,
    le composant étant un échangeur de chaleur (10) et la sortie (54) du dispositif de guidage d'écoulement (41) étant conçue pour nettoyer au moins une partie (74) de l'échangeur de chaleur (10) en dirigeant le liquide vers celui-ci lors de l'utilisation, ou
    le composant étant un filtre à peluches et la sortie du dispositif de guidage d'écoulement (41) étant conçue pour nettoyer au moins une partie du filtre à peluches en dirigeant le liquide vers celui-ci lors de l'utilisation.
  5. Appareil ménager selon l'une quelconque des revendications précédentes, comprenant une autre enveloppe de guidage (76, 78, 80) qui est placée à l'intérieur ou à l'extérieur du canal d'air de traitement (20) de sorte à fournir le dispositif de guidage de liquide (41) à l'intérieur ou à l'extérieur du canal d'air de traitement (20), ou
    le canal d'air de traitement (20) ayant une ouverture de paroi (82) et le dispositif de guidage de liquide (41) formant un élément de fermeture ou de paroi de sorte que lorsque le dispositif de guidage de liquide (41) est inséré dans l'ouverture de paroi (82), le canal d'air de traitement (20) soit fermé, scellé ou recouvert au niveau de l'ouverture de paroi (82).
  6. Appareil ménager selon la revendication 2 ou 5, au moins un élément d'alignement étant disposé sur une première (76, 80), ou sur une seconde (78, 80), ou sur une première et une seconde enveloppe de guidage (76, 78, 80), l'au moins un élément d'alignement étant conçu pour aligner les première et seconde enveloppes de guidage (76, 78, 80) .
  7. Appareil ménager selon l'une quelconque des revendications précédentes, une partie d'une extension de direction d'écoulement (56) du dispositif de guidage de liquide (41) s'étendant parallèlement au canal d'air de traitement (20) ou à la partie de canal d'air de traitement ou parallèlement à la direction d'écoulement dans le canal d'air de traitement (20).
  8. Appareil ménager selon l'une quelconque des revendications précédentes, une zone de passage de liquide (C, C1, C2, C3, C4, C5) du dispositif de guidage de liquide (41) augmentant dans une première dimension de section transversale (D1) et diminuant dans une seconde dimension de section transversale (D2) le long de la direction d'écoulement (56) de l'entrée (52) vers la sortie (54) de sorte que la zone de passage de liquide (C, C1, C2, C3, C4, C5) ne diminue pas de l'entrée (52) vers la sortie (54).
  9. Appareil ménager selon l'une quelconque des revendications précédentes, une zone de passage de liquide (C, C1, C2, C3, C4, C5) étant constante le long de la direction d'écoulement (56) de l'entrée (52) vers la sortie (54).
  10. Appareil ménager selon l'une quelconque des revendications précédentes, la sortie (54) formant une buse (62), ou la sortie (54) ayant une forme de fente (58) .
  11. Appareil ménager selon l'une quelconque des revendications précédentes, la zone de sortie (54) du dispositif de guidage de liquide (41) formant une buse (62) ou étant pliée pour dévier le liquide dans la zone de sortie (54), la buse (62) ou la zone d'extrémité pliée étant formée au niveau d'un premier côté par une première (78) des enveloppes de guidage qui est séparée du canal d'air de traitement (20) et au niveau d'un second côté ou d'un côté opposé par une seconde (76) des enveloppes de guidage qui est formée par le canal d'air de traitement (20) .
  12. Appareil ménager selon l'une quelconque des revendications précédentes, le dispositif de guidage de liquide (41) étant plié dans la zone de sortie d'extrémité (54) du dispositif de guidage de liquide (41) de sorte que la direction d'écoulement de liquide (56) soit modifiée au niveau de la zone d'extrémité (54).
  13. Appareil ménager selon l'une quelconque des revendications précédentes, dans l'extrémité extérieure de la sortie (54) du dispositif de guidage de liquide (41),
    le dispositif de guidage de liquide (41) étant formé comme ou comprenant un élément de déviation (66) conçu pour dévier le liquide au niveau de la sortie (54), ou
    le dispositif de guidage de liquide (41) étant formé comme ou comprenant un élément d'expansion pour permettre une distribution spatiale d'écoulement de liquide au niveau de la sortie.
  14. Appareil ménager selon l'une quelconque des revendications précédentes, dans un ou deux plans de coupe transversale le long de la direction principale d'écoulement (56), le dispositif de guidage de liquide (41) étant plan de l'entrée (52) à la sortie (54).
  15. Appareil ménager selon l'une quelconque des revendications précédentes, le dispositif de guidage de liquide (41) s'étendant sur une dimension de la section de canal d'air de traitement (20) qui accueille le ou un échangeur de chaleur (10, 12) ou qui accueille un premier (10) et second (12) échangeur de chaleur.
  16. Appareil ménager selon l'une quelconque des revendications précédentes, l'extension longitudinale du dispositif de guidage de liquide (41) s'étendant parallèlement à une direction d'écoulement à travers un ou l'échangeur de chaleur (10, 12) ou un ou le premier (10) et second (12) échangeur de chaleur.
  17. Appareil ménager selon l'une quelconque des revendications précédentes, le canal d'air de traitement (20) ayant au moins une ouverture à l'extrémité de sortie de l'enveloppe de guidage (76) formée dans le canal d'air de traitement (20) pour faire passer le liquide qui s'écoule à travers le dispositif de guidage de liquide (41) vers l'intérieur du canal d'air de traitement (20).
  18. Appareil ménager selon l'une quelconque des revendications précédentes, le canal d'air de traitement (20) ayant une ouverture d'alimentation ou un connecteur d'alimentation conçu pour amener du liquide de l'extérieur vers l'intérieur du canal d'air de traitement (20) au niveau de l'entrée (52) du dispositif de guidage de liquide (41).
  19. Appareil ménager selon l'une quelconque des revendications précédentes, la direction principale (56) de l'écoulement de liquide dans le dispositif de guidage de liquide (41) et la direction d'écoulement principale de l'air de traitement (A) dans le canal d'air de traitement (20) étant parallèles ou antiparallèles l'une par rapport à l'autre.
  20. Appareil ménager selon l'une quelconque des revendications précédentes, dans l'appareil ménager (2),
    l'entrée (52) du dispositif de guidage du liquide (41) étant située au niveau d'une pompe à condensat ou d'un récipient de condensat (40), ou
    la sortie (54) du dispositif de guidage du liquide (41) étant située sur le côté avant (74) ou le côté entrée de traitement d'un échangeur de chaleur (10) disposé dans le canal d'air du processus (20).
  21. Appareil ménager selon l'une quelconque des revendications précédentes, l'entrée (52) du dispositif de guidage de liquide (41) pouvant être reliée de manière sélective ou étant reliée à
    un réservoir de liquide intermédiaire,
    un réservoir de collecte de condensat amovible (40), et/ou
    un réservoir de collecte de condensat (30) qui est disposé dans le socle (5) de l'appareil ménager (2).
  22. Appareil ménager selon la revendication 21, une pompe (36, 42) pour pomper le liquide vers le dispositif de guidage de liquide (41) étant disposée entre le réservoir de liquide intermédiaire, ou un réservoir de collecte de condensat amovible (40), ou un réservoir de collecte de condensat (30) et le dispositif de guidage de liquide (41).
  23. Appareil ménager selon la revendication 22, la pompe (42) ou le réservoir de collecte de condensat amovible (40) étant disposé au niveau d'une section supérieure de l'appareil ménager (2) et un conduit de liquide (34) étant guidé vers le bas à l'intérieur du corps de l'appareil ménager (2) vers le dispositif de guidage de liquide (41) disposé dans un socle (5) de celui-ci.
EP13759798.5A 2012-09-14 2013-09-12 Appareil ménager avec un dispositif de guidage de liquide Active EP2895651B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13759798.5A EP2895651B1 (fr) 2012-09-14 2013-09-12 Appareil ménager avec un dispositif de guidage de liquide
EP20172502.5A EP3730690A1 (fr) 2012-09-14 2013-09-12 Appareil ménager doté d'un dispositif de guidage de liquide
EP20172507.4A EP3725939B1 (fr) 2012-09-14 2013-09-12 Appareil ménager comportant un dispositif de guidage de liquide
PL13759798T PL2895651T3 (pl) 2012-09-14 2013-09-12 Artykuły gospodarstwa domowego z urządzeniem prowadzącym ciecz

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EP12184375.9A EP2708639A1 (fr) 2012-09-14 2012-09-14 Appareil ménager avec un dispositif de guidage de liquide
EP13759798.5A EP2895651B1 (fr) 2012-09-14 2013-09-12 Appareil ménager avec un dispositif de guidage de liquide
PCT/EP2013/068954 WO2014041097A1 (fr) 2012-09-14 2013-09-12 Appareil électroménager doté d'un dispositif de guidage de liquide

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EP20172502.5A Division EP3730690A1 (fr) 2012-09-14 2013-09-12 Appareil ménager doté d'un dispositif de guidage de liquide
EP20172502.5A Division-Into EP3730690A1 (fr) 2012-09-14 2013-09-12 Appareil ménager doté d'un dispositif de guidage de liquide
EP20172507.4A Division EP3725939B1 (fr) 2012-09-14 2013-09-12 Appareil ménager comportant un dispositif de guidage de liquide
EP20172507.4A Division-Into EP3725939B1 (fr) 2012-09-14 2013-09-12 Appareil ménager comportant un dispositif de guidage de liquide

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EP2895651A1 EP2895651A1 (fr) 2015-07-22
EP2895651B1 true EP2895651B1 (fr) 2020-06-24

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EP20172507.4A Active EP3725939B1 (fr) 2012-09-14 2013-09-12 Appareil ménager comportant un dispositif de guidage de liquide
EP13759798.5A Active EP2895651B1 (fr) 2012-09-14 2013-09-12 Appareil ménager avec un dispositif de guidage de liquide
EP20172502.5A Pending EP3730690A1 (fr) 2012-09-14 2013-09-12 Appareil ménager doté d'un dispositif de guidage de liquide

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CN (1) CN104619905B (fr)
AU (1) AU2013314329A1 (fr)
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CN104619905B (zh) 2017-12-15
EP3725939B1 (fr) 2024-04-10
EP2895651A1 (fr) 2015-07-22
CN104619905A (zh) 2015-05-13
EP2708639A1 (fr) 2014-03-19
WO2014041097A1 (fr) 2014-03-20
EP3730690A1 (fr) 2020-10-28
PL2895651T3 (pl) 2021-01-11
EP3725939A1 (fr) 2020-10-21
PL3725939T3 (pl) 2024-08-05
AU2013314329A1 (en) 2015-03-12

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