EP2719817A1 - Appareil de traitement de linge amélioré - Google Patents

Appareil de traitement de linge amélioré Download PDF

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Publication number
EP2719817A1
EP2719817A1 EP12187788.0A EP12187788A EP2719817A1 EP 2719817 A1 EP2719817 A1 EP 2719817A1 EP 12187788 A EP12187788 A EP 12187788A EP 2719817 A1 EP2719817 A1 EP 2719817A1
Authority
EP
European Patent Office
Prior art keywords
air
appliance
auxiliary
laundry
laundry treating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12187788.0A
Other languages
German (de)
English (en)
Other versions
EP2719817B1 (fr
Inventor
Sergio Pillot
Luciano Sartor
Marcin Lorenc
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 EP12187788.0A priority Critical patent/EP2719817B1/fr
Publication of EP2719817A1 publication Critical patent/EP2719817A1/fr
Application granted granted Critical
Publication of EP2719817B1 publication Critical patent/EP2719817B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • 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
    • D06F58/30—Drying processes 

Definitions

  • the present invention generally relates to household and/or professional laundry treating appliances configured for performing drying operations. More particularly, the present invention relates to laundry drying appliances and/or laundry washing/drying appliances provided with a moisture condensing unit for condensing moisture-laden process air resulting from such drying operations.
  • Each household and/or professional laundry treating appliance conceived for performing laundry drying operations such as laundry drying appliances (concisely, laundry dryer, to which reference will be made hereinafter by way of example only) and/or laundry washing/drying appliances, generally comprises a drying chamber configured for housing a laundry load (including articles such as clothes and other textiles) and for causing process air circulating therethrough to remove moisture from the laundry load, e.g. shortly after cleaning/washing thereof.
  • laundry drying appliances generally, laundry dryer, to which reference will be made hereinafter by way of example only
  • laundry washing/drying appliances generally comprises a drying chamber configured for housing a laundry load (including articles such as clothes and other textiles) and for causing process air circulating therethrough to remove moisture from the laundry load, e.g. shortly after cleaning/washing thereof.
  • a first class of laundry dryers comprises so-called “venting dryers”, which are generally configured for continuously drawing in cool, dry, ambient air around them, heating it up (thereby obtaining the corresponding process air), and feeding the process air into the drying chamber (where laundry load moisture absorption by the process air occurs).
  • the resulting moisture-laden process air from the drying chamber is finally vented outside the laundry dryer to make room for more process air to continue the drying process.
  • a second class of laundry dryers comprises so-called “condensation dryers", which are generally configured for condensing the process air moisture (by means of a moisture condensing unit - or simply, condensing unit), and draining the condensed (hence, liquid) moisture into a proper collection tank ( e.g. , for manual extraction and emptying thereof by a user).
  • the condensing unit may comprise either an evaporator member of a heat pump device, or an air-air heat exchanger, both configured for de-moisturizing the process air by using a proper de-moisturizing fluid (typically, a refrigerant or the ambient air, respectively).
  • a proper de-moisturizing fluid typically, a refrigerant or the ambient air, respectively.
  • the laundry dryer is provided with air inlets and air outlets for causing the ambient air to enter the laundry dryer (and be channeled or piped towards the condensing unit), and corresponding discard air (i.e., the ambient air affected by cooling and/or de-moisturizing process) to be expelled from it, respectively.
  • air inlets and air outlets provided on suitable portions of the laundry dryer cabinet (usually, near the condensing unit), form, as a whole, an air grid putting into fluid communication the outside of the laundry dryer with the condensing unit (and/or the operative components to be cooled).
  • the Applicant believes that the air grid as presently implemented is not satisfactory in terms of amount of ambient air able to enter the laundry dryer and discard air able to exit therefrom. Such amount has been found to be limited by air grid area issues, which is not susceptible to be discretionally increased in order to not impair aesthetical requirements of the laundry dryer, and hence attractiveness thereof.
  • the amount of air entering and/or exiting the laundry dryer is not enough. This may lead to slower cooling and/or de-moisturizing processes, which in turn may involve performance issues of the overall laundry dryer - as the drying operation times of the laundry dryer become not effective, thus longer and power wasting - as well as reliability issues - as the operative components may dangerously operate in overheating conditions for relatively long period of use.
  • An aspect of the solution according to one or more embodiments of the present invention relates to a laundry treating appliance comprising a cabinet formed by panels, an air passage provided on a front face of a cabinet panel for allowing ambient air to enter or exit the appliance, a bottom face of said cabinet panel further comprises at least one auxiliary air passage for allowing auxiliary ambient air to enter or exit the appliance from below.
  • the bottom face comprises a coupling side configured for being coupled with a lower end of the appliance upon assembling of the cabinet panel, the coupling side comprising at least one recess defining said auxiliary passage, upon said coupling.
  • the lower end of the appliance is formed by a basement portion on which the cabinet is mounted.
  • the laundry treating appliance further comprises floor-resting feet for lifting the appliance from the floor, the auxiliary ambient air being allowed to flow to the auxiliary air passage through the gap formed between the bottom face of the cabinet panel and the floor.
  • the air passage comprises a plurality of through-holes.
  • the laundry treating appliance implements laundry drying functions, the appliance further comprising a drying chamber for housing a laundry load to be dried, the appliance being configured for causing process air to flow through the drying chamber thereby allowing moisture absorption from the laundry load housed therein; the appliance comprises a moisture condensing unit for condensing the moisture absorbed by the process air from said laundry load, and a collection tank for collecting the moisture condensed by the moisture condensing unit.
  • the front panel of the cabinet comprises, at a lower portion thereof, a manually-removable access member for allowing the condensing unit to be accessed for maintenance operations thereof, said air passage being provided on the access member thereby defining an air grid thereof.
  • the moisture condensing unit comprises an air-air heat exchanger, the air passage and the auxiliary air passage being in fluid communication with a flow path that passes ambient air through the air-air heat exchanger.
  • the moisture condensing unit comprises an evaporator member of a heat pump device, at least part of the ambient air and the auxiliary ambient air acting as cooling air for cooling down components of the heat pump device.
  • the laundry treating appliance comprises a first air passage allowing ambient air to enter the appliance and a second air passage allowing ambient air to exit the appliance, the first and second air passages being provided on a front face of one of the cabinet panels, said appliance being further provided with first and second auxiliary air passages formed on a bottom face of the same cabinet panel for respectively allowing auxiliary ambient air to enter and exit the appliance from below.
  • the present invention the amount of air able to enter the laundry dryer and exit therefrom is significantly increased without impairing the air grid area, and hence the aesthetical requirements of the laundry dryer. This also leads to faster cooling and/or de-moisturizing processes, which in turn improves performance of the laundry dryer - as the drying operation times become effective, thus shorter and power saving - as well as reliability thereof - as the operative components may be prevented from operating in overheating conditions for long period of use. Moreover, the present invention may also be applied to modern and high performance laundry dryers featuring large and capacious drying chambers, which need increased air flows.
  • Figure 1 shows a partly exploded perspective view of a laundry treating appliance 100, for example for domestic use, according to an embodiment of the present invention.
  • the laundry treating appliance 100 is a laundry dryer (as generically illustrated in the figure, and to which reference will be made in the following by way of non-limiting example only), but the principle of the present invention may also be applied to any other laundry treating appliance generally configured for performing laundry drying operations - such as a washer-dryer, or the like.
  • the laundry dryer 100 e.g. a condensation laundry dryer, comprises a substantially parallepiped-shaped cabinet 105 having a front panel 105 F , a rear panel (not visible in the figures), two side panels 105 S (only one visible in the figures), a top panel 105 T , and a bottom panel (the latter, not shown, for bottom closing the laundry dryer 100).
  • the cabinet 105 encloses an inner compartment that accommodates a drying chamber (e.g. a rotating drum), not visible, for housing a laundry load to be dried, and accessible through an access door 110 (shown in a closed configuration) provided on the front panel 105 F of the cabinet 105 for loading/unloading the laundry load.
  • a drying chamber e.g. a rotating drum
  • the inner compartment also accommodates mechanical, electro-mechanical, electric and electro-hydraulic components, generally configured for allowing operation of the laundry dryer 100 (thus, referred to hereinafter as operative components) - e.g. , for causing process air to flow through the drying chamber thereby allowing moisture absorption from the laundry load housed therein, condensing the moisture absorbed by the process air, cooling down the components and/or the like.
  • operative components mechanical, electro-mechanical, electric and electro-hydraulic components
  • the exemplary laundry dryer 100 herein considered comprises a moisture condensing unit, or condensing unit, 115 for condensing the process air moisture, and a manually-extractable collection tank 120 for collecting the condensed moisture thereinto (thereby allowing periodic emptying thereof by a user).
  • the condensing unit 115 is not visible in the figures, however, in order to at least conceptually illustrate arrangement thereof within the laundry dryer 100, the condensing unit 115 is shown in Figure 3B through dashed lines. Moreover, as visible in such figure, the condensing unit 115 is illustrated as a generic functional block, as the implementation thereof is not limiting for the present invention. In this respect, as known, the condensing unit 115 may comprise either an evaporator member of a heat pump device or, as will be exemplarily assumed hereinafter by way of example only, an air-air heat exchanger, which makes use of ambient air as de-moisturizing air.
  • the condensing unit 115 is housed within a base 125 (whose lower portion only is visible in Figure 1 ), typically together with some or all the operative components.
  • the base 125 and hence the condensing unit 115 and the operative components housed therein, are accessible ( e.g. , for maintenance operations, such as fluff cleaning) by means of a manually-removable (e.g. , openable) access member 105 AM provided at a lower portion of the front panel 105 F .
  • a manually-removable (e.g. , openable) access member 105 AM provided at a lower portion of the front panel 105 F .
  • the access member 105 AM is provided with air inlets 130 IN and air outlets 130 OUT for allowing ambient air to enter the laundry dryer 100, and corresponding discard air to exit it, respectively.
  • air inlets 130 IN and air outlets 130 OUT identify inlet and outlet sections, respectively, of a lowest strip-like part of the access member 105 AM or air grid.
  • such air inlets 130 IN and air outlets 130 OUT are in fluid communication with corresponding inner compartment regions where action of the ambient air requested.
  • the air inlets 130 IN and the air outlets 130 OUT are in fluid communication ( e.g. , through corresponding ducts of the base 125, not shown) with an input and an output, respectively, of the condensing unit 115, i.e. with a flow path passing ambient air through the condensing unit 115.
  • the ambient air after being passed through the air inlets 130 IN , is channeled or piped (at least partly) to the input of the condensing unit 115 for promoting the de-moisturizing process of the moisture-laden process air (from the drying chamber), whereas the discard air - in the case at issue, the ambient air affected by ( i.e., heated-up as a consequence of) such de-moisturizing process - from the output of the condensing unit 115 is channeled or piped (at least partly) for being vented outside the laundry dryer 100 through the air outlets 130 OUT .
  • the air inlets 130 IN , the input of the condensing unit 115, the output of the condensing unit 115, and the air outlets 130 OUT define, as a whole, a de-moisturizing/discard air circuit of the laundry dryer 100.
  • the air grid as described above is not satisfactory in terms of amount of ambient air able to enter the laundry dryer 100 and discard air able to exit therefrom.
  • the air grid area is not susceptible to be discretionally increased in size in order to not impair aesthetical requirements of the laundry dryer 100.
  • Such an insufficient amount of air entering and/or exiting the laundry dryer may lead to a slower de-moisturizing process, which in turn may pose performance issues of the overall laundry dryer 100 (as the drying operation times of the laundry dryer 100 become less effective, thus longer and electric power wasting) as well as reliability issues.
  • the access member 105 AM is also configured such as to allow auxiliary ambient air (see incoming arrows A F,INaux in Figures 1 and 3A ) and auxiliary discard air (see outcoming arrows A F,OUTaux in Figures 1 and 3B ) to flow from below the laundry dryer 100, i.e . from a surface of the appliance facing the floor.
  • a bottom face 135 of the front panel 105 F (also corresponding to the bottom face of the access member 105 AM facing the floor upon installation of the laundry dryer 100) comprises one or more auxiliary air inlets, such as the exemplarily illustrated auxiliary air inlet 130 INaux and one or more auxiliary air outlets, such as the exemplarily illustrated auxiliary air outlet 130 OUTaux for allowing the auxiliary ambient air A F,INaux and the auxiliary discard air A F,OUTaux to enter and exit, respectively, the appliance from below.
  • this is obtained by properly shaping a coupling side of the bottom face 135 intended to be coupled with a corresponding lower end of the laundry dryer 100 upon assembling of the front panel 105 F .
  • Said lower end may be formed by a basement portion on which the cabinet 105 is mounted.
  • such coupling side comprises one or more, e.g. two recesses, each one defining a corresponding air passage upon front panel 105 F assembling.
  • an inlet recess is provided along the coupling side of the bottom face 135 belonging to the inlet section of the air grid, and an outlet recess is provided along the coupling side of the bottom face 135 belonging to the outlet section of the air grid, with such inlet recess and outlet recess that define the auxiliary air inlet 130 INaux and the auxiliary air outlet 130 OUTaux , respectively, upon said assembling.
  • the auxiliary air inlet 130 INaux and the auxiliary air outlet 130 OUTaux are in fluid communication with the air inlets 130 IN and the air outlets 130 OUT , respectively, and hence with the input and output of the condensing unit 115.
  • the laundry dryer 100 is configured such that the front panel 105 F (and hence the bottom face 135 thereof) is slightly lifted with respect to the floor.
  • the laundry dryer 100 comprises floor-resting feet 140 (only one illustrated in the figures for the sake of representation ease), which slightly lift the laundry dryer 100 from the floor.
  • the auxiliary ambient air A F,INaux and the auxiliary discard air A F,OUTaux is allowed to flow to the auxiliary air inlet 130 INaux and from the auxiliary air outlet 130 OUTaux , respectively, through the gap between the bottom face 135 of the front panel 105 F and the floor.
  • the present invention the total incoming ambient air is given by the sum of the ambient air A F,IN with the auxiliary ambient air A F,INaux , whereas the total outcoming discard air is given by sum of the discard air A F,OUT with the auxiliary discard air A F,OUTaux .
  • the amount of air able to enter the laundry dryer and exit the laundry dryer 100 is significantly increased, which leads to faster de-moisturizing process, and hence to drying operation time more effective, shorter and power saving. It should be noted that such result has been achieved simply and without impairing aesthetical requirements of the laundry dryer 100, as the air grid area can be the same as that of the presently marketed laundry dryers.
  • the present invention may also be applied to modern and high performance laundry dryers featured by large and capacious drying chambers, which need increased air flow.
  • such air inlets 130 IN and air outlets 130 OUT comprise, as shown in Figures 1 and 2 , a plurality of through-holes provided on a lower portion of the access member 105 AM .
  • the illustrated arrangement and size of the through-holes should not be construed limitatively, as they may be chosen according to specific design parameters to be met.
  • the through-holes may be in staggered configuration, and arranged by increasing size from the top of the air grid ( i.e., the most visible portion of the access member 105 AM ) to the bottom thereof ( i.e., the less visible one).
  • such solution may also permit air grid area reduction.
  • any component thereof may be separated into several elements, or two or more components may be combined into a single element; in addition, each component may be replicated for supporting the execution of the corresponding operations in parallel.
  • any interaction between different components generally does not need to be continuous (unless otherwise indicated), and it may be both direct and indirect through one or more intermediaries.
  • the air inlets, the air outlets, the auxiliary air inlet and the auxiliary air outlet have been described as provided on the front face of the cabinet front panel, this should not be construed limitatively; by way of example only, it is possible to provide implementations wherein the air inlets and/or the air outlets, the auxiliary air inlet and/or the auxiliary air outlet are arranged on the cabinet side panels, including the top and the rear cabinet panels.
  • auxiliary air inlets and the auxiliary air outlets may be in any number and shape without affecting the principles of the present invention. In this respect, nothing prevents from forming the auxiliary air inlets and the auxiliary air outlets as holes (instead of recesses) already provided on the bottom face of the front panel (hence, not defined upon assembling only), or with any other implementations, e.g. , also taking into account different front panel assembling ways.
  • the floor-resting feet may also be not provided, or they have very small size.
  • the bottom face of the front panel and/or the bottom panel may be shaped such as to define the gap with the floor.
  • the principles of the present invention apply to any other moisture condensing unit suitable for the purpose (e.g. , the moisture condensing unit may be an evaporator member of a heat pump device).
  • the ambient air may be used mainly as cooling air for cooling down operative components responsible for operation of the appliance (thereby ensuring a correct and reliable operation thereof).
  • an embodiment of the invention may provide that part of the total incoming ambient air is channelled towards the air-air heat exchanger for being used as de-moisturizing air, whereas another part thereof is channelled towards the operative components for being used as cooling air.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP12187788.0A 2012-10-09 2012-10-09 Appareil de traitement de linge amélioré Active EP2719817B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12187788.0A EP2719817B1 (fr) 2012-10-09 2012-10-09 Appareil de traitement de linge amélioré

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12187788.0A EP2719817B1 (fr) 2012-10-09 2012-10-09 Appareil de traitement de linge amélioré

Publications (2)

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EP2719817A1 true EP2719817A1 (fr) 2014-04-16
EP2719817B1 EP2719817B1 (fr) 2018-08-08

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Cited By (1)

* 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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742708A (en) * 1952-07-12 1956-04-24 Gen Motors Corp Domestic appliance
GB2145206A (en) * 1983-08-16 1985-03-20 Ti Domestic Appliances Ltd Laundry drying equipment
JP2001070697A (ja) * 1999-09-06 2001-03-21 Sanyo Electric Co Ltd 衣類乾燥機
EP1103648A2 (fr) * 1999-11-29 2001-05-30 Electrolux Zanussi S.p.A. Procédé et sèche-linge à condensation pour séchage de vêtements
EP1508636A2 (fr) * 2003-08-13 2005-02-23 Lg Electronics Inc. Dispositif pour aspirer l'air extérieur dans un sèche-linge
EP2423376A1 (fr) * 2010-08-25 2012-02-29 Electrolux Home Products Corporation N.V. Machine de traitement du linge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742708A (en) * 1952-07-12 1956-04-24 Gen Motors Corp Domestic appliance
GB2145206A (en) * 1983-08-16 1985-03-20 Ti Domestic Appliances Ltd Laundry drying equipment
JP2001070697A (ja) * 1999-09-06 2001-03-21 Sanyo Electric Co Ltd 衣類乾燥機
EP1103648A2 (fr) * 1999-11-29 2001-05-30 Electrolux Zanussi S.p.A. Procédé et sèche-linge à condensation pour séchage de vêtements
EP1508636A2 (fr) * 2003-08-13 2005-02-23 Lg Electronics Inc. Dispositif pour aspirer l'air extérieur dans un sèche-linge
EP2423376A1 (fr) * 2010-08-25 2012-02-29 Electrolux Home Products Corporation N.V. Machine de traitement du linge

Cited By (1)

* 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

Also Published As

Publication number Publication date
EP2719817B1 (fr) 2018-08-08

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