EP2669424B1 - Machine de traitement du linge - Google Patents

Machine de traitement du linge Download PDF

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Publication number
EP2669424B1
EP2669424B1 EP12169722.1A EP12169722A EP2669424B1 EP 2669424 B1 EP2669424 B1 EP 2669424B1 EP 12169722 A EP12169722 A EP 12169722A EP 2669424 B1 EP2669424 B1 EP 2669424B1
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EP
European Patent Office
Prior art keywords
air
machine
closing element
laundry
bottom closing
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
EP12169722.1A
Other languages
German (de)
English (en)
Other versions
EP2669424A1 (fr
Inventor
Diego Dal Ben
Marcin Lorenc
Marco Santarossa
Alessandro Vian
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 EP12169722.1A priority Critical patent/EP2669424B1/fr
Publication of EP2669424A1 publication Critical patent/EP2669424A1/fr
Application granted granted Critical
Publication of EP2669424B1 publication Critical patent/EP2669424B1/fr
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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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 

Definitions

  • the present invention concerns the technical field of laundry treating machines.
  • the present invention refers to laundry washing and/or drying machines..
  • Laundry treating machines capable of carrying out a drying process on laundry generally comprise a casing that houses a laundry container, like a rotating drum, where laundry to be treated is received, and an air circuit for carrying out drying operation by circulating hot air through the laundry container.
  • Air circulating means and heating means are provided in the air circuit for circulating and heating drying air, respectively.
  • condensing means are further provided in the air circuit for removing moisture from drying air passing through articles to be treated thereby allowing said air to be recirculated cyclically within the air circuit. Moisture removed from articles is either collected in a tank periodically emptied by a user or it is directly exhausted by a pipe connected to a waste water net.
  • a laundry drying machine as described above is disclosed in EP 2 423 376 , wherein air for cooling the laundry moisture condensing means is taken from an air opening placed on the bottom side of the machine cabinet.
  • Washing and drying machines i.e. machines provided for performing articles washing and drying operations in a single machine are also known and generally comprise a water circuit including pumping means for allowing washing water to be supplied to a laundry treating chamber and a drying arrangement as described before for drying laundry.
  • principles of the invention may be applied to a laundry treating appliance, such as a washing machine, for example in cases when an air flow is needed to cool machine operating devices or part thereof.
  • the invention may be equivalently applied to a vented dryer, i.e. a dryer wherein drying air is exhausted from the machine.
  • Typical examples comprise an air-air heat exchanger or an evaporator of a heat pump circuit incorporated within the dryer.
  • Such condensing means or components thereof require to be cooled in order to constantly provide a cold surface where moisture removed from laundry and contained in the drying air can be condensed or to remove heat produced by said components, like a compressor in a heat pump circuit.
  • air taken from dryer machine surroundings is used as cooling means of a condenser or components thereof.
  • a bottom closing panel is provided with a plurality of inlet openings.
  • the bottom closing panel may then be further provided with a plurality of outlet openings through which the air is expelled.
  • a first drawback of this known technique is constituted by the fact that objects resting around the machine may be sucked inside the machine thus damaging the components arranged therein, such as the fan and the moisture condensing unit.
  • Another drawback posed by this known technique is constituted by the high noise generated by air mass moved through the openings. This undesired noise is particularly disadvantageous because prevents the machine to be used during night hours and/or to be placed close to rooms where silent is needed, such as bedrooms.
  • Another drawback posed by this known technique is constituted by the reduced strength of the closing panel due to the openings formed therein.
  • the main object of the present invention is therefore to overcome said drawbacks.
  • Another object of the present invention is to provide a laundry treating machine with an increased reliability with respect to the machines of known type. Another object of the present invention is to provide a laundry treating machine with improved safety.
  • a further object of the invention is to provide a laundry treating machine producing a low noise during working operation compared to laundry treating machines of known type.
  • Still another object of the present invention is to provide a laundry treating machine having components with higher strength compared to laundry treating machines of known type.
  • a laundry treating machine comprising a casing accommodating a laundry chamber suitable for receiving the laundry to be treated, a bottom part, a bottom closing element having an air passage and applicable to said bottom part in a side thereof facing the floor where said machine rests and by providing a protective element closing the air passage is possible to obtain a laundry treating machine having an increased reliability with respect to the machines of known type.
  • the present invention relates, therefore, a laundry treating machine comprising a casing accommodating a laundry chamber suitable for receiving the laundry to be treated, a bottom part comprising a basement and a bottom closing element applicable to said basement in a side thereof facing the floor where said machine rests, said bottom closing element comprising an air passage allowing an air flow to pass therethrough; wherein said bottom closing element comprises a grid-like structure closing said air passage.
  • the grid-like structure comprises a grid removably or fixedly connected to the bottom closing element.
  • the grid-like structure is integrally made with said bottom closing element.
  • the basement is suitable for receiving at least one operational device for carrying out a treatment on said laundry and comprises at least one air flow path for conveying air to and/or from said at least one operational device.
  • the operational device comprises an air-air heat exchanger and the at least one air flow path comprises a cooling air flow for cooling such heat exchanger.
  • the at least one air flow path comprises an air path provided for conveying moist air coming from the laundry chamber to the heat exchanger. Further opportunely, the air flow path is in fluid communication with the air passage provided on the bottom closing element.
  • At least one operational device comprises a heat pump system and the at least one air flow path comprises an air path provided for conveying moist air coming from the laundry chamber to the heat pump system
  • the at least one air flow path is formed in a lower side of the basement and the bottom closing element closes in a substantially air-tight manner the air flow path.
  • the bottom closing element is obtained from a plastic sheet subjected to a thermoforming process.
  • the bottom closing element and the grid-like structure are obtained from a plastic sheet subjected to a thermoforming process.
  • the present invention has proved to be particularly successful when applied to a laundry drying machine of condenser type provided with an air-air heat exchanger; however it is clear that the present invention can be applied to any type of laundry treating machine, such as laundry washing machines, laundry washing and drying machines, or laundry dryers having a heat pump system for condensing moisture removed from laundry by an air flow circulating from/to the drum and for heating such drying air.
  • reference number 1 indicates as a whole a laundry drying machine 1, hereinafter referred to as dryer.
  • the dryer 1 preferably comprises, though not necessarily, a substantially parallelepiped-shaped outer boxlike casing 2 which is preferably structured for resting on the floor and a preferably, though not necessarily, substantially cylindrical rotatable drum (not shown) which is structured for housing the laundry to be dried.
  • the drum preferably has its front opening directly facing a laundry loading/unloading pass-through opening provided in the front upright side wall 2a of the boxlike casing 2.
  • a front door 8 pivotally coupled to the front upright side wall 2a, is provided for allowing access to the drum interior region to place laundry to be dried therein.
  • An extractable moisture tank in the form of a drawer 9 is slidably arranged on the top of the casing 2, for being periodically emptied by a user in case the dryer cannot be connected to a waste water net through a pipe.
  • a user control interface 10 is arranged on the top of the casing 1 near the drawer 9 for input of laundry treatment programs and displaying machine working conditions.
  • the dryer 1 also comprises a hot-air-generating device (not shown) for generating a drying air stream passing through the laundry drum to dry the laundry.
  • a hot-air-generating device (not shown) for generating a drying air stream passing through the laundry drum to dry the laundry.
  • the dryer 1 of the invention is of the condenser type, i.e. of the type in which drying air is re-circulated through the drum in a closed loop, and comprises a condensing device, not illustrated, arranged along the drying air path downstream the laundry drum considering the direction of the drying air flow.
  • the hot air produced by the hot-air-generating device removes moisture from laundry in the drum and the moist air then passes through the condensing device.
  • the condensing device is in the form of an air-air cross-flow type heat exchanger.
  • the moist air passing through the condensing device is cooled by a cooling air flow passing through the condensing device itself.
  • the cooled and also dehumidified air is then conveyed again to the hot-air-generating device.
  • the moisture condensing device may be a refrigerant fluid evaporator of a heat pump system.
  • the bottom part 16 of the dryer 1 preferably comprises a basement 14 arranged inside the casing 2. Such basement 14 is better illustrated in Figures 3 and 4 separated from the rest of the machine 1.
  • the basement 14 is preferably made by two portions, an upper shell 14a and a lower shell 14b, which are properly connected one to the other, preferably by means of screws or snap-in connections.
  • a bottom closing element 7 is removably mounted onto a lower side 36 of the bottom part 16 of the dryer 1, as illustrated in Figure 1 .
  • the lower side 36 of the bottom part 16 of the dryer 1 is the side of the bottom part 16 which faces the floor on which the dryer 1 is installed.
  • the bottom closing element 7 is removably mounted directly onto the casing 2.
  • the bottom closing element 7 is removably mounted onto a lower side 17 of the basement 14.
  • the lower side 17 of the basement 14 is the side of the basement 14 which faces the floor on which the dryer 1 is installed.
  • the bottom closing element 7 preferably closes, in a substantially air-tight manner, the lower part of air paths 31, 32 formed in the basement 14.
  • the air paths 31, 32 allow circulation of a cooling air flow from the external environment to the inner region of the casing 2, i.e. inside the machine body, and the exhaustion of such air flow outside the machine.
  • the air paths 31, 32 being in fluid communication with the air passage 12.
  • the basement 14 is preferably made of polymeric material and further preferably it is made by an injection moulding process.
  • the basement 14 advantageously comprises a seat, not visible, where the air-air heat exchanger is arranged.
  • the basement 14 is opportunely shaped so as to create air paths for conveying moist air coming from the laundry chamber, i.e. the drum inner region, to the air-air heat exchanger and also the air 31, 32 paths for the cooling air flow, as said before.
  • air passage 11 On the bottom part 16 of the dryer 1, and preferably in its front upright side wall 2a an air passage 11 is provided for draining air from/to the dryer 1.
  • air passage 11 is divided into two portions 11A, 11B for allowing cooling air to enter and exit the casing 2, as indicated by arrows "I” and "O" in Figure 1 , in order to cool the condensing device arranged in the basement 14.
  • portions 11A and 11B of air passage 11 may be arranged on different upright side walls 2 other than the dryer front wall.
  • an air passage 12 is also formed as an opening 37 in the bottom closing element 7.
  • Such air passage 12 is always accessible to air because the bottom closing element 7 extends in a position that is spaced apart and substantially parallel to a floor on which the dryer 1 is placed.
  • the air passage 12 allows a supplemental cooling air to enter the casing 2, as indicated by arrow "Is" in Figures 1 and 3 .
  • the distance between bottom closing element 7 and a floor is determined in an adjustable manner through vertically adjustable supports (not illustrated) placed under the casing 2, preferably at the four vertices.
  • basement 14 On the basement 14, and preferably on an upper side 18 of the basement 14, seats are also formed for receiving therein operational devices 5 other than the condensing means, like air pumping means, motor means for powering air pumping means.
  • basement 14 comprises a lower side forming at least a portion of a first air path wherein the air is drawn in from outside the machine and/or the air is exhausted outside the machine and further comprises an upper side forming at least a portion of a second air path that passes through one or more of said operational devices 5.
  • the first air path is in fluid communication with the passage 12 and it may pass through one or more of said operational devices 5.
  • said operational devices 5 may comprise other functional devices to carry out a drying treatment on laundry as, for example, heat pump circuit components like fluid compressing means, heat exchanging means, fluid condensing and/or evaporating means.
  • the heat pump circuit is provided to heat the drying air and remove moisture therefrom.
  • the opening 37 of the air passage 12 in the bottom closing element 37 preferably comprises a protective element 40.
  • the protective element 40 preferably comprises a grid-like element 41. More preferably, the protective element 40 comprises a grid 41. Such a grid 41 may be realized with any suitable material. Preferably the grid 41 is a metallic or a plastic grid.
  • the grid 41 constitutes a separate element which is removably connected to the bottom closing element 7.
  • the protective element 40 may be easily removed for its replacement or for allowing inspection of the inner region of the basement 14.
  • the grid 41 may be fixedly connected to the bottom closing element 7.
  • the grid 40 may be advantageously and quickly connected to the bottom closing element 7 while it is produced.
  • the bottom closing element 7 and the grid 41 may be co-moulded when the bottom closing element 7 is realized by injection of a plastic material. In this way two different materials may be used for making the bottom closing element 7 and the grid 41.
  • the bottom closing element 7 may be alternatively obtained with a thermoforming process.
  • a plastic sheet is heated to a pliable forming temperature and then formed to the specific desired shape in a mould.
  • the plastic sheet used in the process preferably comprises a polypropylene panel.
  • the provision of the protective element 40 for the air passage 12 on the bottom closing element 7 of the present invention prevents any object resting around the machine 1 to be sucked inside the basement 14. This avoids damaging of the components arranged inside the basement 14, like the condensing device, the operational devices 5, etc..
  • the grid-like structure of the protective element 40 may also contribute to reduce the noise generated by the air mass moved through the opening 37.
  • the machine may therefore to be placed and operated close to rooms where low noise or silent is required or even during night hours.
  • the grid-like structure of the protective element 40 increases strength of the bottom closing element 7, thus increasing reliability of the dryer 1.
  • the bottom closing element 7 preferably closes almost the entire surface of the lower side 17 of the basement 14, and in general the lower side 16 of the dryer 1. In further embodiments, nevertheless, the bottom closing element could have a different extent, for example partially closing of the lower side 16 of the dryer 1. With reference to Figures from 5 to 7, a construction variant of the bottom closing element 57 is described.
  • Said embodiment differs from the first embodiment previously described in that the bottom closing element 57 is obtained in a single piece construction with the protective element 60.
  • the protective element 60 comprises, advantageously, a grid-like structure 61.
  • the bottom closing element 57 and the protective element 60 therefore define a completed, integral, unitary member.
  • the bottom closing element 57 is preferably obtained with a thermoforming process.
  • a plastic sheet is heated to a pliable forming temperature and then formed to the specific desired shape and with the specific desired grid-like structure.
  • the plastic sheet used in the process preferably comprises a polypropylene panel.
  • the realization of the bottom closing element 57 with a thermoforming process is cost saving.
  • Such embodiment differs from the embodiments previously described in that the bottom closing element 77 is provided with two air passages 82, 83 formed as openings, each comprising a protective element 85, 86.
  • the first opening 82 preferably allows cooling air to enter the casing 2 and the second opening 83 preferably allows cooling air to exit the casing 2, as indicated by arrows "I" and "O" in Figure 8 .
  • the protective elements 85, 86 preferably comprise a grid-like structure.
  • the bottom closing element 77 is obtained in a single piece construction with the protective elements 82, 82.
  • the bottom closing element 77 and the protective elements 82, 83 therefore define a completed, integral, unitary member.
  • the bottom closing element 77 is preferably obtained with a thermoforming process.
  • each of the protective elements may be obtained in a different way, for example it may comprise a metallic or a plastic grid.
  • the present invention allows all the set objects to be achieved.
  • it makes it possible to obtain a laundry treating machine with an increased reliability with respect to the machines of known type.

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

Claims (11)

  1. Machine de traitement du linge (1) comprenant une carrosserie (2) accueillant une chambre de linge appropriée pour recevoir le linge devant être traité, une partie fond (16) comprenant une base (14) et un élément de fermeture de fond (7 ; 57 ; 77) applicable à ladite base (14) dans un côté de celle-ci (17) tourné vers le sol sur lequel repose ladite machine (1), ledit élément de fermeture de fond (7 ; 57 ; 77) comprenant un passage d'air (12 ; 82, 83) permettant à un écoulement d'air de passer à travers celui-ci ; caractérisée par le fait que ledit élément de fermeture de fond (7 ; 57 ; 77) comprend une structure de type grille (40 ; 60 ; 85, 86) fermant ledit passage d'air (12 ; 82, 83).
  2. Machine (1) selon la revendication 1, caractérisée par le fait que ladite structure de type grille (40) comprend une grille (41) reliée de façon amovible ou de façon fixe audit élément de fermeture de fond (7).
  3. Machine (1) selon la revendication 1, caractérisée par le fait que ladite structure de type grille (60 ; 85, 86) est réalisée d'un seul tenant avec ledit élément de fermeture de fond (7).
  4. Machine (1) selon l'une quelconque des revendications précédentes, caractérisée par le fait que ladite base (14) est appropriée pour recevoir au moins un dispositif fonctionnel (5) pour réaliser un traitement sur ledit linge et comprend au moins un trajet d'écoulement d'air (31, 32) pour transporter de l'air vers et/ou à partir dudit au moins un dispositif fonctionnel (5).
  5. Machine (1) selon la revendication 4, caractérisée par le fait que ledit au moins un dispositif fonctionnel (5) comprend un échangeur de chaleur air-air et ledit au moins un trajet d'écoulement d'air comprend un écoulement d'air de refroidissement (31, 32) pour refroidir ledit échangeur de chaleur.
  6. Machine (1) selon l'une quelconque des revendications 4 ou 5, caractérisée par le fait que ledit au moins un trajet d'écoulement d'air est en communication fluidique avec le passage d'air (12, 82, 83).
  7. Machine (1) selon la revendication 5, caractérisée par le fait que ledit au moins un trajet d'écoulement d'air comprend un trajet d'air disposé pour transporter de l'air humide de ladite chambre de linge audit échangeur de chaleur.
  8. Machine (1) selon la revendication 4, caractérisée par le fait que ledit au moins un dispositif fonctionnel (5) comprend un système de pompe à chaleur et ledit au moins un trajet d'écoulement d'air comprend un trajet d'air disposé pour transporter de l'air humide de ladite chambre de linge audit système de pompe à chaleur.
  9. Machine (1) selon l'une quelconque des revendications 4 à 8, caractérisée par le fait que ledit au moins un trajet d'écoulement d'air est formé dans un côté inférieur de ladite base (14) et ledit élément de fermeture de fond (7 ; 57 ; 77) ferme d'une manière sensiblement étanche à l'air ledit au moins un trajet d'écoulement d'air.
  10. Machine (1) selon l'une quelconque des revendications précédentes, caractérisée par le fait que ledit élément de fermeture de fond (7 ; 57 ; 77) est obtenu à partir d'une feuille de matière plastique qui a été soumise à un traitement de thermoformage.
  11. Machine (1) selon l'une quelconque des revendications précédentes, caractérisée par le fait que ledit élément de fermeture de fond (7 ; 57 ; 77) et ladite structure de type grille (40 ; 60 ; 85, 86) sont obtenus à partir d'une feuille de matière plastique qui a été soumise à un traitement de thermoformage.
EP12169722.1A 2012-05-29 2012-05-29 Machine de traitement du linge Active EP2669424B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12169722.1A EP2669424B1 (fr) 2012-05-29 2012-05-29 Machine de traitement du linge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12169722.1A EP2669424B1 (fr) 2012-05-29 2012-05-29 Machine de traitement du linge

Publications (2)

Publication Number Publication Date
EP2669424A1 EP2669424A1 (fr) 2013-12-04
EP2669424B1 true EP2669424B1 (fr) 2015-03-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11891749B2 (en) 2020-11-23 2024-02-06 Whirlpool Corporation Under-cabinet seal to prevent exhaust recirculation for a condensing appliance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487759B1 (ko) * 2003-08-13 2005-05-06 엘지전자 주식회사 의류건조기의 냉각공기 흡입구조
KR20100034077A (ko) * 2008-09-23 2010-04-01 삼성전자주식회사 의류건조기
EP2423376B1 (fr) * 2010-08-25 2013-04-24 Electrolux Home Products Corporation N.V. Machine de traitement du linge

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