EP3039180B1 - Wärmepumpen-wäschetrockner mit drehtrommel - Google Patents

Wärmepumpen-wäschetrockner mit drehtrommel Download PDF

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Publication number
EP3039180B1
EP3039180B1 EP14744351.9A EP14744351A EP3039180B1 EP 3039180 B1 EP3039180 B1 EP 3039180B1 EP 14744351 A EP14744351 A EP 14744351A EP 3039180 B1 EP3039180 B1 EP 3039180B1
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EP
European Patent Office
Prior art keywords
supporting
drum
bulkhead
rotary
air
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
EP14744351.9A
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English (en)
French (fr)
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EP3039180A1 (de
Inventor
Andrea Giovannetti
Marco Santarossa
Alessandro Vian
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Electrolux Appliances AB
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Electrolux Appliances AB
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Priority to EP14744351.9A priority Critical patent/EP3039180B1/de
Publication of EP3039180A1 publication Critical patent/EP3039180A1/de
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Publication of EP3039180B1 publication Critical patent/EP3039180B1/de
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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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/06—Mountings for the rotating drums
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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 

Definitions

  • the present invention relates to a rotary-drum laundry dryer.
  • the present invention relates to a rotary-drum home laundry dryer to which the following description refers purely by way of example without implying any loss of generality.
  • rotary-drum home laundry dryers currently on the market generally comprise: a substantially parallelepiped-shaped, outer boxlike casing structured for resting on the floor; a substantially cylindrical rotatable drum which is structured for housing the laundry to be dried and is housed in axially rotating manner inside the casing in order to rotate about an horizontally-oriented longitudinal reference axis, directly facing a laundry loading/unloading opening formed in the front wall of the casing; a porthole door hinged to the front wall of the casing to rotate to and from a closing position in which the door rests completely against the front wall of the casing to close the laundry loading/unloading opening and airtight seal the rotatable drum; an electrically-powered motor assembly which is housed inside the casing and is structured for driving into rotation the rotatable drum about its longitudinal reference axis; an open-circuit or closed-circuit, hot-air generator which is housed inside the casing and is structured to circulate inside the rotatable drum a stream of hot air which has a
  • the rotatable drum furthermore consists in a substantially cylindrical rigid tubular body having open ends, while in a second kind of rotary-drum home laundry dryers said substantially cylindrical rigid tubular body has one end which is closed by a bottom wall rigidly fixed to the tubular body.
  • the rotatable drum extends substantially horizontally inside the boxlike casing, locally aligned to the laundry loading/unloading opening, and is structured for resting on a number of idle supporting rollers which are arranged at the two axial ends of the tubular body locally parallel to the drum longitudinal reference axis, and are attached to the appliance casing in free revolving manner so as to allow the tubular body to freely rotate about its horizontally-oriented longitudinal reference axis.
  • the front rim of the tubular body surrounds the laundry loading/unloading opening and is coupled in axially rotating manner to the front wall of the boxlike casing; whereas the rear rim of the tubular body abuts against the rear wall of the boxlike casing and is coupled in axially rotating manner directly to said rear wall.
  • the front wall comprises an annular frame and a covering panel; the covering panel belonging to the cabinet of the laundry dryer. In actual use the covering panel covers the annular frame.
  • the stream of hot air produced by the hot-air generator usually enters into the tubular body via an intake air-vent made in the rear wall of the boxlike casing, within the perimeter of the rear rim of the tubular body, flows inside the tubular body for the entire length of the latter, and finally comes out of the tubular body via an escape air-vent usually carried out on the annular frame that delimits the laundry loading/unloading opening on the front wall of the casing.
  • a first circular sealing gasket is generally interposed between the front rim of the tubular body and the front wall of the casing, whereas a second circular sealing gasket is generally interposed between the rear rim of the tubular body and the rear wall of the appliance casing.
  • the first and the second circular sealing gaskets are usually recessed into a circular groove carried out on the front and rear wall of the casing, respectively, and are firmly hold in the groove so as to remain stationary when the rotatable drum rotates about its longitudinal reference axis.
  • the back of the rotatable drum i.e. the rear wall of the boxlike casing or the bottom wall fixed to the tubular body of the drum, may be provided with an anti-entangling nose that protrudes from the rear wall closing the rear end of the drum tubular body, roughly at centre of the rear rim of the tubular body, and extends inside the tubular body locally substantially parallel to the drum longitudinal reference axis.
  • This nose is shaped/dimensioned so to prevent, when the drum rotates, the laundry from entangling and block the hot-air intake vent located on said wall or unbalance the drum rotation.
  • DE 10 2005 013 053 A1 discloses a rotary-drum condenser dryer having a base module and a process air cover made of plastic material.
  • a rear wall comprises a heating duct with a bearing for supporting a rear end of the drum.
  • EP 2 103 732 A1 discloses a laundry dryer comprising a dryer cabinet with a plastic basement having formed therein passages for a drying air flow, a drum rotatably accommodated within the cabinet and a plurality of rollers provided within the cabinet for rotatably supporting the drum.
  • the rollers are rotatably supported by respective pins provided on the plastic basement.
  • a front and rear panel form respectively front and rear bulkheads against which the rim of the front and rear drum ends abuts.
  • Aim of the present invention is to simplify the structure of the rear wall of the boxlike casing so as to significantly reduce the appliance production costs and simplifying the drying machine assembling process.
  • a rotary-drum heat-pump laundry dryer as defined in claim 1.
  • This rotary-drum heat-pump laundry dryer comprises, inter alia, a rotatable drum structured for housing the laundry to be dried, a hot-air generator structured to supply a stream of hot air through said rotatable drum, and a lower supporting base which is structured for resting on the floor and for housing at least part of the hot-air generator; the hot-air generator in turn comprising:
  • the rotary-drum laundry dryer according to the invention is characterized in that at least one supporting boss of a drum supporting roller being also made of plastic material and carried out in one piece with the supporting bulkhead; and at least one supporting boss of a supporting roller being carried out in one piece with a lower supporting basement or socle.
  • the rotary-drum laundry dryer according to the invention is characterized in that a lower supporting basement or socle is also made in plastic material.
  • reference number 1 indicates as a whole a rotary-drum home laundry dryer.
  • the rotary-drum home laundry dryer comprises:
  • the laundry dryer 1 additionally comprises:
  • the hot-air generator 6 can be a heat-pump which is envisaged for gradually drawing air from the rotatable drum 3; rapidly cooling down the wet air arriving from the rotatable drum 3 so to extract and retain the surplus moisture in the air drawn from the rotatable drum 3; and then rapidly heating the dehumidified air to a predetermined temperature, normally higher than the temperature of the air coming from the rotatable drum 3; and finally feeding the heated, dehumidified air back into the rotatable drum 3, where the air flows over the laundry inside the drum to rapidly dry said laundry.
  • a heat-pump is particularly suitable in carrying out the invention because the dry air which is used for drying the laundry has a quite low temperature and therefore it doesn't damage the plastic components of the casing.
  • the heat-pump assembly (non shown in detail) comprises a first and a second air/refrigerant heat exchangers located inside the air recirculating conduit 21, preferably downstream of the centrifugal fan.
  • the first air/refrigerant heat exchanger traditionally referred to as the "evaporator" of the heat-pump circuit, is located inside the air recirculating conduit 21 preferably downstream of the centrifugal fan, and is structured to remove/absorb heat from the airflow arriving from rotatable drum 3, thus forming the air cooling means of the hot-air generator 6.
  • the second air/refrigerant heat exchanger traditionally referred to as the "condenser" of the heat-pump circuit, is instead located inside the air recirculating conduit 21 downstream of the first air/ refrigerant heat exchanger, and is structured to release heat to the airflow arriving from the first air/refrigerant heat exchanger, thus forming the air heating means of the hot-air generator 6.
  • the air heating means of hot-air generator 6 may comprise a resistor located inside the air recirculating conduit 21, preferably downstream of the centrifugal fan, whereas the air cooling means of hot-air generator 6 may comprise an air/air heat exchanger that uses the external air to cool down the airflow arriving from the rotatable drum 3.
  • the rotatable drum 3 preferably consists in a substantially cylindrical-shaped, rigid tubular body preferably made of metal material and which extends inside the boxlike casing 2 coaxial to a preferably substantially horizontally-oriented, longitudinal reference axis L while remaining locally substantially aligned to the laundry loading/unloading opening on the front wall 2a of the boxlike casing 2.
  • the substantially cylindrical-shaped, rigid tubular rotatable drum 3 is furthermore preferably structured for resting on a number of idle supporting rollers 8 which are arranged approximately at the two axial ends of the rotatable drum 3 with their rotation axis locally substantially parallel to the longitudinal reference axis L of the rotatable drum 3; and are fitted in free revolving manner so as to allow the rotatable drum 3 to freely rotate about its longitudinal reference axis L inside the boxlike casing 2.
  • a circular front rim 3f ( Figure 2 ) of the rotatable drum 3 surrounds the laundry loading/unloading opening carried out on the front wall 2a of boxlike casing 2 and is coupled in substantially airtight and axially rotating manner to the front wall 2a, preferably with the interposition of a first circular sealing gasket 9.
  • a circular rear rim 3r of rotatable drum 3 instead abuts against the preferably substantially vertically-oriented, rear wall 2b of boxlike casing 2 and is coupled in substantially airtight and axially rotating manner directly to said rear wall 2b with the interposition of a second circular sealing gasket 10.
  • Both front and rear circular sealing gaskets 9 and 10 are obviously substantially coaxial with the longitudinal reference axis L of the rotatable drum 3.
  • the stream of hot air produced by the hot-air generator 6 preferably enters into the rotatable drum 3 through the rear end of the rotatable drum 3, i.e. the end of the rotatable drum 3 delimited by the rear rim 3r, flows inside the rotatable drum 3 for the entire length of the latter, and finally comes out of rotatable drum 3 through the front end of the rotatable drum 3, i.e. the end of the rotatable drum 3 delimited by the front rim 3f, or vice versa.
  • the stream of hot air produced by the hot-air generator 6 preferably enters the rotatable drum 3 via an intake air-vent located in the rear wall 2b of the boxlike casing 2 and locally aligned to the rear end of the rotatable drum 3, i.e. within the perimeter of the rear rim 3r of the rotatable drum 3, and comes out of rotatable drum 3 via an escape air-vent which is preferably located either on the porthole door 4 that selectively closes the laundry loading/unloading opening of front wall 2a, or directly on the front wall 2a of the boxlike casing 2, preferably very close to the laundry loading/unloading opening.
  • an intake air-vent located in the rear wall 2b of the boxlike casing 2 and locally aligned to the rear end of the rotatable drum 3, i.e. within the perimeter of the rear rim 3r of the rotatable drum 3, and comes out of rotatable drum 3 via an escape air-vent which is preferably located either on the porthole door 4 that selectively closes
  • the outer boxlike casing 2 preferably comprises a substantially parallelepiped-shaped lower supporting basement or socle 11 which is structured for resting on the floor and preferably also for housing at least part of the hot-air generator 6; and a substantially parallelepiped-shaped upper boxlike cabinet 12 which is rigidly fixed to the top of the lower supporting basement or socle 11 and it is structured so as to house the rotatable drum 3.
  • the circular sealing gasket 9 is preferably, though not necessarily, stationary recessed into a circular groove or seat made on a front frame or bulkhead 13 which is preferably associated to a front panel of the upper boxlike cabinet 12, thereby forming the front wall 2a of casing 2.
  • the circular sealing gasket 9 is arranged into the circular groove or seat so as to completely surround the laundry loading/unloading opening on the front wall 2a of the casing 2, and the front rim 3f of the rotatable drum 3 abuts directly against said front circular sealing gasket 9.
  • the circular sealing gasket 10 is firmly fixed to the rear wall of the upper boxlike cabinet 12, i.e. to the rear wall 2b of the boxlike casing 2, and the intake air-vent of hot-air generator 6 is incorporated into the same rear wall of the upper boxlike cabinet 12, i.e. into the rear wall 2b of the boxlike casing 2.
  • the rear wall 2b of casing 2 preferably comprises a substantially flat, vertically-oriented supporting panel or bulkhead 14a and a cover 14b.
  • At least the bulkhead 14a (preferably both elements 14a, 14b) is made in a plastic, i.e. polymeric, material by means for instance of an injection molding process.
  • the bulkhead 14a can be ideally divided into:
  • FIG. 9 there are two possible embodiments of the present invention. Indeed, in the embodiment of Figure 9 a portion of a first cup-shaped face 142 of a scroll 150 is integrated into the substantially rectangular main body 141; whereas in the alternative embodiment of Figure 10 no portion of the first cup-shaped face 142 has been integrated into the main body 141.
  • the whole scroll 150 is composed by the aforesaid first cup-shaped face 142 (which belongs to the bulkhead 14a) and a second cup-shaped face 143 which in turn is a portion of the cover 14b (see further on).
  • first cup-shaped face 142 is provided with a through circular opening 142a for housing the relevant shaft (not shown) of a relevant fan (not shown) of a centrifugal impeller (not shown).
  • the fan of the impeller is housed in the scroll 150.
  • a continuous circular groove 144 has been provided outside the circular outline of the substantially circular central bulge 141a.
  • the circular groove 144 is able to house the aforementioned circular sealing gasket 10 (see above). It is obvious for the man skilled in the art that the circular groove 144 could be replaced by a substantially cylindrical gasket-supporting collar which protrudes from the inner face of the bulkhead 14a.
  • the substantially cylindrical gasket-supporting collar protrudes from the inner face of the supporting bulkhead 14a towards the rotatable drum 3 while remaining locally substantially coaxial to the longitudinal axis L of the rotatable drum 3, i.e. coaxial to the rear rim 3r of the rotatable drum 3, so as to completely surround the circular central bulge 141a, and finally has a nominal diameter greater than that of the rear rim 3r of rotatable drum 3 so as to completely surround the rear rim 3r.
  • the circular sealing gasket 10 is encircled and fitted/recessed into the gasket-supporting collar (or into the circular groove 144) preferably in substantially airtight manner, and is suitably shaped/dimensioned so as to permanently come in abutment against the rear rim 3r of the rotatable drum 3 without interruption all around the perimeter of the latter, so as to avoid any air leakage between the rear rim 3r of rotatable drum 3 and the supporting bulkhead 14a.
  • the circular sealing gasket 10 is preferably rigidly fixed, force-fitted into the gasket-supporting collar (or into the circular groove 144).
  • the circular sealing gasket 10 is furthermore suitably shaped/dimensioned so as to also abut directly against the beneath-located first cup-shaped face 142 without interruption all around the perimeter of the gasket.
  • the sealing gasket 10 is constructed in a material that continuously takes up the slack between the rim 3a and the outer surface of the sealing gasket 10.
  • At least a central circular portion 145 of the circular central bulge 141a is occupied by a number of through holes 146 which permit the flow of the treating air produced by hot-air generator 6 toward the laundry that has to by dried within the rotatable drum 3.
  • a laundry anti-entangling nose 17 is provided too.
  • the laundry anti-entangling nose 17 protrudes from the central circular portion 145 of the circular central bulge 141a and extends in use inside the rotatable drum 3 preferably while remaining locally substantially coaxial to the longitudinal reference axis L of the rotatable drum 3, and is properly shaped/dimensioned so as to prevent, when the rotatable drum 3 rotates, the entangling of the damp laundry located into the rotatable drum 3.
  • the anti-entangling nose 17 is furthermore preferably substantially frustoconical in shape.
  • the supporting panel or bulkhead 14a of rear wall 2b is made of plastic, i.e. polymeric, material, further preferably via an injection molding process.
  • the gasket-supporting collar (or the circular groove 144) is made in one piece with the same supporting bulkhead 14a during the same forming process.
  • the circular central bulge 141a may be formed with a simplified shape so as to be (removably) coupled with a separate bulge portion piece which is provided for closing the rear end of the rotatable drum 3.
  • the circular central bulge 141a may be formed in a further simplified shape if the rotatable drum 3 is provided with a bottom wall fixedly attached to the rotatable drum 3.
  • Such simplified shapes include planar shapes where a plurality of through holes 146 are formed for allowing the flow of drying air to enter the rotatable drum 3 via the separate bulge portion or the tubular body bottom wall which, in turn need to be pierced.
  • the anti-entangling nose 17, alike the gasket-supporting collar (or into the circular groove 144), is preferably made in one piece with the supporting panel or bulkhead 14a, and preferably, though not necessarily, consists in a preferably substantially ogival-shaped bulge or recess which is built approximately at center of the portion of the supporting bulkhead 14a delimited/encircled by the gasket-supporting collar (or the circular groove 144), and which protrudes inside the rotatable drum 3 preferably while remaining locally substantially coaxial to the longitudinal reference axis L of rotatable drum 3.
  • the ogival-shaped bulge or recess made at center of the gasket-supporting collar (or the circular groove 144) is preferably, though not necessarily, substantially in the shape of a cone.
  • the anti-entangling nose 17 is preferably built in one piece with the supporting bulkhead 14a and the gasket-supporting collar (or the circular groove 144) preferably via an injection molding process.
  • a supporting pin 17a of the anti-entangling nose 17 is carried out in a plastic piece with the rectangular main body 141.
  • the nose 17 is mounted on the supporting pin 17a by means of well known fastening devices, for instance screws.
  • At least a portion of the first cup-shaped face 142 of the scroll 150 is built in one piece with the substantially rectangular main body 141 preferably via an injection molding process.
  • a supporting boss 155 of a corresponding idle supporting roller 8 is built also in one piece (preferably via an injection molding process) with the bulkhead 14a.
  • Each supporting boss 155 protrudes inwardly from the bulkhead 14a, i.e. protrudes towards the rotatable drum 3 when the bulkhead 14a is mounted on the casing 2.
  • the bulkhead 14a could be provided in one piece either with at least a portion of the first cup-shaped face 142, or with at least a supporting boss 155, or both.
  • Figure 11 it is shown a bulkhead 14a provided in one piece with at least a portion of the first cup-shaped face 142 but without any roller supporting boss 155.
  • FIG 7 is visible in greater detail the mounting of an idle supporting roller 8 on the corresponding supporting boss 155 which protrudes from the bulkhead 14a.
  • the conical-shaped supporting boss 155 is tapered outwardly and is provided with a central bore 155a.
  • the idle supporting roller 8 in turn comprises a bearing 8a which is mounted on the supporting boss 155 by means of a self-tapping screw 156.
  • a reinforced wheel 8b is supported by a supporting annular structure 8c which is interposed between, and anchored to the radially outer surface of the bearing 8a and the wheel 8b.
  • the rotatable drum 3 leans against the outer cylindrical surface of the wheel 8b.
  • a fairlead element 147 can be provided on the upper ridge of the bulkhead 14a.
  • the fairlead element 147 is used for supporting a power cable (not shown) which enters the cabinet to electrically power at least an electronic card (not shown).
  • the fairlead element 147 ( Figure 5 ) consists of a tile-shaped canal 147a and of a closure plug 147b hinged to an end of the tile-shaped canal 147a. Both the tile-shaped canal 147a and the closure plug 147b can be built in one piece with the rest of the bulkhead 14a, during the same process forming the bulkhead 14a.
  • the power cable is inserted into the tile-shaped canal 147a which is then closed by the closure plug 147b manually bent by an operator.
  • the closure plug 147b is shaped for fitting with the corresponding tile-shaped canal 147a in order to firmly maintain the power cable.
  • a hook 148 is shown that protrudes from a lateral edge of the bulkhead 14a.
  • a hook 148 is used to support a tube (not shown) for feeding the condensate from a collecting sump (non shown) arranged below a drying air moisture condensing unit on the bottom of the cabinet towards a removable reservoir (non shown) on the upper part of the cabinet that has to be periodically emptied by a user.
  • the hook 148 can be built in one piece with the rest of the bulkhead 14a and eventually with the fairlead element 147 too.
  • the cover 14b which couples with the rear surface of the bulkhead 14a, i.e. on the surface which is opposite to that on which the rotatable drum 3 rotates, is provided with the aforesaid second cup-shaped face 143 and with a lid 157 which tightly fits with the outward surface of the central circular portion 145 of the circular central bulge 141a.
  • the lid 157 is properly shaped/dimensioned to completely cover and close the outward surface of the central circular portion 145 so as to form/delimit, together with the supporting bulkhead 14a, an inner cavity 19 ( Figure 2 ) which is locally aligned/faced to the rear end of the rotatable drum 3 delimited by rear rim 3r, and communicates with, i.e. is fluidly connected to, the inside of the rotatable drum 3 so that the stream of hot air circulating inside the rotatable drum 3 is guided to flow into, or flow out of, the rear end of rotatable drum 3 only via said inner cavity 19.
  • the hot-air generator 6 (in particular a heat-pump), in turn, is structured so as to communicate with, i.e. to be fluidly connected to, the inner cavity 19 made inside the rear wall of the upper boxlike cabinet 12, i.e. inside the rear wall 2b of casing 2, so as to circulate the stream of hot air to and from said inner cavity 19.
  • the complementary cover 14b is coupled in substantially airtight manner to the supporting bulkhead 14a, preferably without the interposition of a sealing gasket which completely surrounds the perimeter of the cover 14b, so as to form/delimit, together with the supporting bulkhead 14a, the aforesaid inner cavity 19.
  • Alike vertically-oriented supporting panel or bulkhead 14a, also the cover 14b is preferably made of plastic, i.e. polymeric, material and it is preferably, though not necessarily, made via an injection molding process.
  • the opposite side of bulkhead 14a is illustrated in Figures 5 , 8 .
  • the first cup-shaped face 142 is provided with an outline collar 180a which surrounds also the opposite side of the central circular portion 145 containing the through holes 146.
  • the outline of the cover 14b is surrounded by an outline collar 180b.
  • the collars 180a, 180b in cooperation form the aforesaid inner chamber 19 wherein the hot and dry air flows.
  • the collars 180a, 180b are attached each other by means of screws for instance and/or by means of similar devices well known in the art, such as snap-in fastening devices.
  • the hot-air generator 6 provides for continually dehumidifying and heating the air circulating inside rotatable drum 3 to rapidly dry the laundry located inside the drum 3, and preferably comprises:
  • the second end of the air recirculating conduit 21 communicates with, i.e. is fluidly connected to, the front end of the rotatable drum 3 via a pass-through opening made in a substantially funnel-shaped coupling element of front bulkhead 13 that delimits/surrounds the laundry loading/unloading opening on the front panel of the upper boxlike cabinet 12, i.e. on the front wall 2a of casing 2.
  • a central/intermediate section of the air recirculating conduit 21 preferably extends in pass-through manner across the lower supporting basement or socle 11 of casing 2, and the air cooling means and air heating means are preferably completely housed inside said central/ intermediate section of the air recirculating conduit 21.
  • the lower supporting basement or socle 11 is formed by two shells coupled one onto the other, forming at least a portion of the air recirculating conduit 21 and further cavities adapted to receive therein further operational components of the dryer for operating a drying process on a laundry mass.
  • the lower supporting basement 11 is made of plastic through an injection moulding process.
  • an area 185 (substantially in the shape of a circular crown) is delimitated by the aforesaid collar 180a and by a substantially circular edge 187 which corresponds (on the opposite side) to the outline of the circular central bulge 141a.
  • a number of substantially radial reinforcing ribs 188 are provided on the area 185 .
  • the external surface if the cover 14b is preferably reinforced by means of transversal 189, circular 190 and longitudinal 191 reinforcing elements.
  • the supporting bulkhead 14a is made of plastic material and the supporting bosses 155b of two supporting rollers 8 are carried out in one piece with the lower supporting basement or socle 11.
  • the supporting bulkhead 14a is made of plastic material and the lower supporting basement or socle 11 is also made in plastic material.
  • the supporting bulkhead 14a has the same features previously described with reference to Figures 3 to 5 and 8 , but no roller supporting boss 155 is provided on it.
  • Four supporting bosses 155b of four drum supporting rollers 8 are carried out in one piece with the lower supporting basement or socle 11.
  • the first cup-shaped face 142 is directed outwardly, i.e. the concavity of the first cup-shaped face 142 of the scroll 150 is on the side opposite to the sleeve-shaped rotatable drum 3, opposite to the supporting rollers 8 and opposite to the laundry anti-entangling nose 17.
  • the integration of at least a portion of a centrifugal impeller scroll made also of plastic material in one piece with the supporting bulkhead; and/or at least one supporting boss of a drum supporting roller allows to significantly reduce the number of component parts while improving their coupling.

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

Claims (13)

  1. Wärmepumpen-Wäschetrockner (1) mit drehbarer Trommel, der Folgendes umfasst:
    ein äußeres kastenartiges Gehäuse (2), das zum Stehen auf dem Boden ausgebildet ist und mit einander gegenüberliegenden vorderen und hinteren Wänden (2a, 2b) ausgebildet ist,
    eine drehbare Trommel (3), die so aufgebaut ist, dass sie die zu trocknende Wäsche aufnimmt, und die axial drehbar in dem äußeren Gehäuse (2) befestigt ist, wobei sie einer Durchgangsöffnung zum Beladen bzw. Entladen von Wäsche, die an der vorderen Wand (2a) des Gehäuses (2) ausgebildet ist, direkt gegenüberliegt;
    einen Heißluftgenerator (6), der eine Wärmepumpe umfasst und so aufgebaut ist, dass er eine Strömung von heißer Luft durch die drehbare Trommel (3) zuführt;
    wobei das äußere kastenartige Gehäuse (2) Folgendes umfasst:
    eine untere Tragbasis (11), die so aufgebaut ist, dass sie auf dem Boden steht und wenigstens einen Teil des Heißluftgenerators (6) aufnimmt,
    wobei der Heißluftgenerator (6) Folgendes umfasst:
    - eine Luftleitung; und
    - Luftzirkulationsmittel, die entlang der Luftleitung angeordnet sind und aufgebaut sind, in der Luftleitung eine Luftströmung (f) zu erzeugen, die durch die drehbare Trommel (3) und über die Wäsche im Inneren der drehbaren Trommel (3) strömt;
    dadurch gekennzeichnet, dass
    die hintere Wand (2b) des Trockners (1) eine tragende Trennwand (14a), die aus Kunststoff hergestellt ist, umfasst; wobei die tragende Trennwand (14a) eine kreisförmige Rille (144) zum Aufnehmen einer Dichtung umfasst oder wobei die tragende Trennwand (14a) einen zylinderförmigen Kragen, der eine Dichtung hält, der von der Innenfläche der Trennwand (14a) vorsteht, umfasst; und
    wenigstens ein Abschnitt (142) einer Schnecke (150) für ein Zentrifugalgebläse, die ebenfalls aus Kunststoff hergestellt ist, mit der tragenden Trennwand (14a) einteilig ausgeführt ist;
    und/oder wenigstens eine Tragnabe (155) einer Trommeltragrolle (8) ebenfalls aus Kunststoff hergestellt ist und mit der tragenden Trennwand (14a) einteilig ausgeführt ist.
  2. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens ein Abschnitt (142) einer Schnecke (150) für ein Zentrifugalgebläse einer ersten becherförmigen Fläche (142) der Schnecke (150) für ein Zentrifugalgebläse entspricht.
  3. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwei Tragnaben (155) von zwei Trommeltragrollen (8) aus Kunststoff hergestellt sind und mit der tragenden Trennwand (14a) einteilig ausgeführt sind.
  4. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die tragende Trennwand (14a) Folgendes umfasst:
    einen Hauptkörper (141), der mit einer zentralen Wölbung (141a) versehen ist, die wiederum nach außen vorsteht; und
    eine erste becherförmige Fläche (142), die von dem Hauptkörper (141) nach unten vorsteht;
    wobei die Konkavität der ersten becherförmigen Fläche (142) an der gegenüberliegenden Seite bei der drehbaren Trommel (3) im Einsatz ist.
  5. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede Tragrolle (8) mit einem Lager (8a) versehen ist, das an der Tragnabe (155) angebracht ist; wobei ein Verstärkungsrad (8b) durch eine ringförmige Tragstruktur (8c), die zwischen der äußeren Oberfläche des Lagers (8a) und dem Verstärkungsrad (8b) angeordnet ist, gestützt wird.
  6. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Vorsprung (17) zum Entwirren von Wäsche vorgesehen ist, der von der tragenden Trennwand (14a) nach Innen vorsteht; wobei der Vorsprung (17) einteilig mit der tragenden Trennwand (14a) ausgeführt ist.
  7. Wäschetrockner mit drehbarer Trommel nach einem der Ansprüche 1-5, dadurch gekennzeichnet, dass ein Tragstift (17a) eines Vorsprungs (17) zum Entwirren einteilig mit der tragenden Trennwand (14a) ausgeführt ist.
  8. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Durchführungselement (147) zum Halten eines Stromkabels vorgesehen ist; wobei das Durchführungselement (147) einteilig mit der tragenden Trennwand (14a) ausgebildet ist.
  9. Wäschetrockner mit drehbarer Trommel nach Anspruch 8, dadurch gekennzeichnet, dass das Durchführungselement (147) einen plattenförmigen Kanal (147a) und einen Verschlussstecker (147b) umfasst, der mit einem Ende des plattenförmigen Kanals (147a) über ein Gelenk verbunden ist.
  10. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Haken (148) vorgesehen ist, der einteilig mit der tragenden Trennwand (14a) ausgebildet ist.
  11. Wäschetrockner (1) mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens eine Tragnabe (155) einer Trommeltragrolle (8) ebenfalls aus Kunststoff hergestellt ist und mit der tragenden Trennwand (14a) einteilig ausgeführt ist; und wobei wenigstens eine Tragnabe (155a) einer Tragrolle (8) mit einem unteren tragenden Bodenteil oder Sockel (11) einteilig ausgeführt ist.
  12. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das untere tragende Bodenteil (11) ebenfalls aus Kunststoff hergestellt ist.
  13. Wäschetrockner mit drehbarer Trommel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die hintere Wand (2b) eine Abdeckung (14b) umfasst, die mit der hinteren Oberfläche der tragenden Trennwand (14a) koppelt.
EP14744351.9A 2013-08-27 2014-07-29 Wärmepumpen-wäschetrockner mit drehtrommel Active EP3039180B1 (de)

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EP14744351.9A EP3039180B1 (de) 2013-08-27 2014-07-29 Wärmepumpen-wäschetrockner mit drehtrommel

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EP13181850.2A EP2843116A1 (de) 2013-08-27 2013-08-27 Wäschetrockner mit Drehtrommel
EP14744351.9A EP3039180B1 (de) 2013-08-27 2014-07-29 Wärmepumpen-wäschetrockner mit drehtrommel
PCT/EP2014/066231 WO2015028227A1 (en) 2013-08-27 2014-07-29 Rotary-drum laundry dryer

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EP3039180B1 true EP3039180B1 (de) 2018-02-28

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EP2843115B1 (de) * 2013-08-27 2018-05-16 Electrolux Appliances Aktiebolag Wäschetrockner mit drehtrommel
CN106137755B (zh) * 2016-07-25 2022-09-23 哈尔滨纳诺机械设备有限公司 一种可换滚筒式包衣机
CN110359249A (zh) * 2018-03-26 2019-10-22 青岛海尔滚筒洗衣机有限公司 一种支撑组件及具有该支撑组件的衣物处理设备
CN108589210A (zh) * 2018-06-29 2018-09-28 海信（山东）冰箱有限公司 一种干衣机的内桶及干衣机
KR20220114167A (ko) * 2021-02-08 2022-08-17 엘지전자 주식회사 의류처리장치

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IT211132Z2 (it) * 1986-05-08 1989-02-13 Zanussi Elettromecc Dispositivo per il fissaggio del motore di una macchine asciugabiancheria.
US4754556A (en) * 1986-08-18 1988-07-05 Whirlpool Corporation Front bulkhead mounting for a dryer
DE102005013053A1 (de) * 2005-05-23 2006-11-30 BSH Bosch und Siemens Hausgeräte GmbH Kondensations-Wäschetrockner
EP2476795B1 (de) * 2008-03-19 2019-10-30 Electrolux Home Products Corporation N.V. Wäschetrockner
CN101446032B (zh) * 2008-08-05 2010-09-29 南京乐金熊猫电器有限公司 衣物烘干机
ES2398028T3 (es) * 2008-12-30 2013-03-13 Arçelik Anonim Sirketi Rodillo de soporte para tambor de secadora
EP2527523B1 (de) * 2011-05-27 2014-02-26 Electrolux Home Products Corporation N.V. Wäschetrockner mit Drehtrommel
EP2592184A1 (de) * 2011-11-08 2013-05-15 Electrolux Home Products Corporation N.V. Waschmaschine mit Drehtrommel
EP2631353B1 (de) * 2012-02-27 2015-01-28 Electrolux Home Products Corporation N.V. Waschmaschine mit Drehtrommel

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EP2843116A1 (de) 2015-03-04
EP3039180A1 (de) 2016-07-06
AU2014314499A1 (en) 2016-03-10
CN105492683A (zh) 2016-04-13
CN105492683B (zh) 2018-08-10
WO2015028227A1 (en) 2015-03-05

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