EP3071744B1 - A laundry dryer - Google Patents

A laundry dryer Download PDF

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Publication number
EP3071744B1
EP3071744B1 EP14789298.8A EP14789298A EP3071744B1 EP 3071744 B1 EP3071744 B1 EP 3071744B1 EP 14789298 A EP14789298 A EP 14789298A EP 3071744 B1 EP3071744 B1 EP 3071744B1
Authority
EP
European Patent Office
Prior art keywords
filter
evaporator
chamber
laundry dryer
particles
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.)
Not-in-force
Application number
EP14789298.8A
Other languages
German (de)
French (fr)
Other versions
EP3071744A1 (en
Inventor
Onur Hartoka
Mehmet MUTLUDOGAN
Emre AYAROGLU
Celal Vatansever
Can Sar
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3071744A1 publication Critical patent/EP3071744A1/en
Application granted granted Critical
Publication of EP3071744B1 publication Critical patent/EP3071744B1/en
Not-in-force 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 
    • 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

Definitions

  • the present invention relates to a laundry dryer comprising an evaporator and a filter.
  • the process air (PA) is heated by a heat exchanger and directed into the drum, dehumidifies the laundry by contacting the damp laundry and is transferred to an evaporator to be dehumidified.
  • the process air (PA) passed through the evaporator is heated at the condenser once more and then delivered to the drum.
  • Under the evaporator a chamber is provided wherein the water droplets generated due to the condensation of the process air (PA) accumulate.
  • particles accumulating on the filter disposed in front of the evaporator are enabled to be accumulated in the chamber.
  • the said particles pass through the chamber and accumulate on the evaporator, thus decreasing the effectiveness of the evaporator.
  • German Patent Application DE 10 2010 039 603 A1 discloses a laundry treating apparatus comprising a first filter that is disposed in front of an evaporator in a process air cycle.
  • a second lint filter that represents a lifetime lint-depot is disposed in a chamber located beneath the evaporator and the first filter.
  • European Patent Application EP 2 458 072 A1 discloses a laundry dryer in which a lint filter is disposed in front of an evaporator in a drying air cycle and a condensate draining path extends below both sides of the filter. The lower end of the filter is immersed into the condensate, thus providing a fluid barrier that prevents the accidental passage of drying air from the drying air cycle to a reservoir where condensed water is collected.
  • the aim of the present invention is the realization of a laundry dryer, the drying effectiveness of which is increased.
  • the process air (PA) at least partially contacts the water in the chamber while passing through the air circulation duct.
  • the said water is kept in the chamber at a level that prevents particles such as lint, fiber, etc. falling from the filter into the chamber from reaching the evaporator.
  • the water is kept at a level that prevents air passage between the filter and the evaporator in the chamber.
  • the laundry dryer of the present invention comprises a discharge pump that enables the water in the chamber to be partially discharged from the chamber at periods predetermined by the manufacturer and at an amount predetermined by the manufacturer.
  • the laundry dryer of an embodiment of the present invention comprises a separator that extends from the air circulation duct into the chamber and a chamber wherein air flow between the filter and the evaporator is prevented in the chamber by means of the water kept continuously in the chamber at a level that contacts the separator and particles falling from the filter are prevented from reaching the evaporator.
  • the separator extends between the evaporator and the filter on the air circulation duct.
  • the separator almost completely covers the upper side of the chamber between the evaporator and the filter.
  • the air circulation duct comprises an opening that is arranged in front of the filter so as to be close to the filter base and that enables the particles such as lint, fiber, etc. accumulating on the filter to be transferred to the chamber.
  • the laundry dryer (1) comprises a body (2), a drum (3) wherein laundry to be dried is placed, an air circulation duct (4) enabling the process air (PA) to be sent onto the laundry in the drum (3), one filter (5) situated in the air circulation duct (4) and that holds the particles like fiber, lint etc. in the process air (PA) blown onto the laundry, an evaporator (6) disposed in the air circulation duct (4) and enabling the process air (PA) passing thereover to be condensed, and a chamber (7) that is disposed under the evaporator (6) and wherein the water droplets forming on the evaporator (6) surface accumulate ( Figure 1 ).
  • the laundry dryer (1) of the present invention comprises the filter (5) that is disposed in front of the evaporator (6) so that a distance remains between the evaporator (6) and the filter (5) and that enables particles such as lint, fiber, etc. in the process air (PA) to be retained before the process air (PA) reaches the evaporator (6), and the chamber (7) that extends from under the evaporator (6) to under the filter (5), wherein particles such as lint, fiber, etc. falling off from the filter (5) accumulate and wherein water is kept at a level that prevents particles such as lint, fiber, etc. falling off from the filter (5) from reaching the evaporator (6) ( Figure 2 ).
  • the laundry dryer (1) of the present invention comprises a discharge pump (8) that discharges the water in the chamber (7) up to a level predetermined by the manufacturer.
  • the discharge pump (8) is operated at periods predetermined by the manufacturer and enables some of the water in the chamber (7) to be discharged from the chamber (7).
  • water is continuously kept in the chamber (7) during all drying cycles at a level that enables the particles falling off from the filter (5) into the chamber (7) to be retained by the water before reaching the evaporator (6).
  • the laundry dryer (1) comprises a separator (9) that is disposed on the air circulation duct (4) and that at least partially extends from the air circulation duct (4) into the chamber (7) so that a distance remains between the chamber (7) base and the separator (9).
  • the separator (9) that separates the chamber (7) into two so as to allow water transfer between the said two partitions, the water level in the chamber (7) is not required to be kept full up to top of the chamber (7). Keeping the water at levels to contact the separator (9) surface is sufficient to prevent the particles falling off from the filter (5) from reaching the evaporator (6). Thus, the water is prevented from overflowing from the chamber (7) into the air circulation duct (4) ( Figure 3 ).
  • the separator (9) extends between the evaporator (6) and the filter (5) on the air circulation duct (4).
  • the separator (9) almost completely covers the upper side of the chamber (7) between the evaporator (6) and the filter (5).
  • the water in the chamber (7) does not go into the air circulation duct (4) through between the evaporator (6) and the filter (5).
  • drying effectiveness is improved.
  • the air circulation duct (4) comprises an opening (10) that is arranged in front of the filter (5) so as to be close to the filter (5) base and that enables the particles such as lint, fiber, etc. accumulating on the front side of the filter (5) to be transferred to the chamber (7).
  • the said opening (10) enables the particles such as lint, fiber, etc. accumulating on the front side of the filter (5) to be transferred into the chamber (7) that is partially filled with water.
  • a hygienic laundry dryer (1) with improved evaporator (6) effectiveness and energy efficiency is realized wherein the particles falling off from the filter (5) are prevented from reaching the evaporator (6) through the chamber (7) by means of the water kept in the chamber (7).

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

Description

  • The present invention relates to a laundry dryer comprising an evaporator and a filter.
  • In the closed cycle laundry dryers widely used nowadays, the process air (PA) is heated by a heat exchanger and directed into the drum, dehumidifies the laundry by contacting the damp laundry and is transferred to an evaporator to be dehumidified. The process air (PA) passed through the evaporator is heated at the condenser once more and then delivered to the drum. Under the evaporator a chamber is provided wherein the water droplets generated due to the condensation of the process air (PA) accumulate. Moreover, particles accumulating on the filter disposed in front of the evaporator are enabled to be accumulated in the chamber. However, the said particles pass through the chamber and accumulate on the evaporator, thus decreasing the effectiveness of the evaporator.
  • In the state of the art European Patent Application No. EP2072660 , a spraying device is described, providing the cleaning of the filter situated in the laundry dryer.
  • German Patent Application DE 10 2010 039 603 A1 discloses a laundry treating apparatus comprising a first filter that is disposed in front of an evaporator in a process air cycle. A second lint filter that represents a lifetime lint-depot is disposed in a chamber located beneath the evaporator and the first filter.
  • European Patent Application EP 2 458 072 A1 discloses a laundry dryer in which a lint filter is disposed in front of an evaporator in a drying air cycle and a condensate draining path extends below both sides of the filter. The lower end of the filter is immersed into the condensate, thus providing a fluid barrier that prevents the accidental passage of drying air from the drying air cycle to a reservoir where condensed water is collected.
  • The aim of the present invention is the realization of a laundry dryer, the drying effectiveness of which is increased.
  • In the laundry dryer realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, the process air (PA) at least partially contacts the water in the chamber while passing through the air circulation duct. During all the steps of the drying process, the said water is kept in the chamber at a level that prevents particles such as lint, fiber, etc. falling from the filter into the chamber from reaching the evaporator. The water is kept at a level that prevents air passage between the filter and the evaporator in the chamber. The laundry dryer of the present invention comprises a discharge pump that enables the water in the chamber to be partially discharged from the chamber at periods predetermined by the manufacturer and at an amount predetermined by the manufacturer.
  • The laundry dryer of an embodiment of the present invention comprises a separator that extends from the air circulation duct into the chamber and a chamber wherein air flow between the filter and the evaporator is prevented in the chamber by means of the water kept continuously in the chamber at a level that contacts the separator and particles falling from the filter are prevented from reaching the evaporator.
  • The separator extends between the evaporator and the filter on the air circulation duct. The separator almost completely covers the upper side of the chamber between the evaporator and the filter.
  • In an embodiment of the present invention, the air circulation duct comprises an opening that is arranged in front of the filter so as to be close to the filter base and that enables the particles such as lint, fiber, etc. accumulating on the filter to be transferred to the chamber.
  • In the laundry dryer of the present invention, hygienic utilization conditions and energy efficiency are improved by using the evaporator efficiently.
  • The laundry dryer realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
    • Figure 1 - is the schematic view of a laundry dryer.
    • Figure 2 - is the schematic view of the chamber, the evaporator and the filter in an embodiment of the present invention.
    • Figure 3 - is the schematic view of the chamber, the evaporator, the filter and the separator in an embodiment of the present invention.
  • The elements illustrated in the figures are numbered as follows:
    1. 1. Laundry dryer
    2. 2. Body
    3. 3. Drum
    4. 4. Air circulation duct
    5. 5. Filter
    6. 6. Evaporator
    7. 7. Chamber
    8. 8. Discharge pump
    9. 9. Separator
    10. 10. Opening
  • The laundry dryer (1) comprises a body (2), a drum (3) wherein laundry to be dried is placed, an air circulation duct (4) enabling the process air (PA) to be sent onto the laundry in the drum (3), one filter (5) situated in the air circulation duct (4) and that holds the particles like fiber, lint etc. in the process air (PA) blown onto the laundry, an evaporator (6) disposed in the air circulation duct (4) and enabling the process air (PA) passing thereover to be condensed, and a chamber (7) that is disposed under the evaporator (6) and wherein the water droplets forming on the evaporator (6) surface accumulate (Figure 1).
  • The laundry dryer (1) of the present invention comprises the filter (5) that is disposed in front of the evaporator (6) so that a distance remains between the evaporator (6) and the filter (5) and that enables particles such as lint, fiber, etc. in the process air (PA) to be retained before the process air (PA) reaches the evaporator (6), and the chamber (7) that extends from under the evaporator (6) to under the filter (5), wherein particles such as lint, fiber, etc. falling off from the filter (5) accumulate and wherein water is kept at a level that prevents particles such as lint, fiber, etc. falling off from the filter (5) from reaching the evaporator (6) (Figure 2).
  • During the operation of the laundry dryer (1), fiber, lint and hair coming off the laundry and carried in the process air (PA) that circulates in the air circulation duct (4) disposed in the body (2) accumulate on the filter (5) disposed in front of the evaporator (6). The process air (PA) reaches the filter (5) before the evaporator (6). The water condensing in the process air (PA) condensed by the evaporator (6) accumulates in the chamber (7) disposed under the evaporator (6). The said chamber (7) is situated under the filter (5) and the evaporator (6). Particles such as lint, fiber, etc. falling off from the filter (5) fall into the chamber (7). In order to prevent the said particles from reaching the evaporator (6) through the chamber (7) and from decreasing the effectiveness of the evaporator (6), water is continuously kept in the chamber (7) at a level that prevents the particles from reaching the evaporator (6). The particles falling off from the filter (5) float on the water. Thus, the particles are prevented from reaching the evaporator (6) through the chamber (7).
  • The laundry dryer (1) of the present invention comprises a discharge pump (8) that discharges the water in the chamber (7) up to a level predetermined by the manufacturer. The discharge pump (8) is operated at periods predetermined by the manufacturer and enables some of the water in the chamber (7) to be discharged from the chamber (7). By operating the said discharge pump (8) at intervals, water is continuously kept in the chamber (7) during all drying cycles at a level that enables the particles falling off from the filter (5) into the chamber (7) to be retained by the water before reaching the evaporator (6).
  • The laundry dryer (1) according to an embodiment of the present invention comprises a separator (9) that is disposed on the air circulation duct (4) and that at least partially extends from the air circulation duct (4) into the chamber (7) so that a distance remains between the chamber (7) base and the separator (9). By means of the separator (9) that separates the chamber (7) into two so as to allow water transfer between the said two partitions, the water level in the chamber (7) is not required to be kept full up to top of the chamber (7). Keeping the water at levels to contact the separator (9) surface is sufficient to prevent the particles falling off from the filter (5) from reaching the evaporator (6). Thus, the water is prevented from overflowing from the chamber (7) into the air circulation duct (4) (Figure 3).
  • The separator (9) extends between the evaporator (6) and the filter (5) on the air circulation duct (4). The separator (9) almost completely covers the upper side of the chamber (7) between the evaporator (6) and the filter (5). Thus, the water in the chamber (7) does not go into the air circulation duct (4) through between the evaporator (6) and the filter (5). Thus, drying effectiveness is improved.
  • In an embodiment of the present invention, the air circulation duct (4) comprises an opening (10) that is arranged in front of the filter (5) so as to be close to the filter (5) base and that enables the particles such as lint, fiber, etc. accumulating on the front side of the filter (5) to be transferred to the chamber (7). The said opening (10) enables the particles such as lint, fiber, etc. accumulating on the front side of the filter (5) to be transferred into the chamber (7) that is partially filled with water.
  • In the laundry dryer (1) of the present invention, a hygienic laundry dryer (1) with improved evaporator (6) effectiveness and energy efficiency is realized wherein the particles falling off from the filter (5) are prevented from reaching the evaporator (6) through the chamber (7) by means of the water kept in the chamber (7).

Claims (4)

  1. A laundry dryer (1) comprising
    - a body (2),
    - a drum (3) wherein laundry to be dried is placed,
    - an air circulation duct (4) enabling the process air (PA) to be sent onto the laundry in the drum (3),
    - one filter (5) situated in the air circulation duct (4) and that holds the particles like fiber, lint etc. in the process air (PA) blown onto the laundry,
    - an evaporator (6) disposed in the air circulation duct (4) and enabling the process air (PA) passing there over to be condensed, wherein the filter (5) is disposed in front of the evaporator (6) so that a distance remains between the evaporator (6) and the filter (5) and wherein the filter (5) enables particles, such as lint or fiber, in the process air (PA) to be retained before the process air (PA) reaches the evaporator (6), and
    - a chamber (7) that is disposed under the evaporator (6) and wherein the water droplets forming on the evaporator (6) surface accumulate, wherein the chamber (7) extends from under the evaporator (6) to under the filter (5), wherein
    - particles, such as lint or fiber, falling off from the filter (5) can accumulate in the chamber (7),
    - the laundry dryer is adapted to keep water in the chamber (7) at a level that prevents air passage between the filter and the evaporator in the chamber, thus preventing particles, such as lint or fiber, falling off from the filter (5) from reaching the evaporator (6),
    - characterized in that the laundry dryer (1) further comprises a discharge pump (8) that is adapted to discharge the water in the chamber (7) until a level predetermined by the manufacturer.
  2. A laundry dryer (1) as in Claim 1, characterized by a separator (9) that is disposed on the air circulation duct (4) and that at least partially extends from the air circulation duct (4) into the chamber (7) so that a distance remains between the chamber (7) base and the separator (9).
  3. A laundry dryer (1) as in Claim 2, characterized in that the separator (9) extends between the evaporator (6) and the filter (5).
  4. A laundry dryer (1) as in any one of the above claims, characterized in that an opening (10) is arranged on the air circulation duct (4), in front of the filter (5) so as to be close to the filter (5) base and enables the particles, such as lint or fiber, accumulating on the front side of the filter (5) to be transferred to the chamber (7).
EP14789298.8A 2013-11-22 2014-10-27 A laundry dryer Not-in-force EP3071744B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201313641 2013-11-22
PCT/EP2014/072989 WO2015074836A1 (en) 2013-11-22 2014-10-27 A laundry dryer

Publications (2)

Publication Number Publication Date
EP3071744A1 EP3071744A1 (en) 2016-09-28
EP3071744B1 true EP3071744B1 (en) 2017-09-20

Family

ID=51794887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14789298.8A Not-in-force EP3071744B1 (en) 2013-11-22 2014-10-27 A laundry dryer

Country Status (2)

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EP (1) EP3071744B1 (en)
WO (1) WO2015074836A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020100759A1 (en) * 2020-01-15 2021-07-15 Miele & Cie. Kg Method and control device for operating a cleaning device and cleaning device
US11542654B2 (en) 2018-12-28 2023-01-03 Whirlpool Corporation Supplemental condensate delivery system having a snap-in drain member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3138953A1 (en) * 2015-09-07 2017-03-08 Arçelik Anonim Sirketi A laundry dryer comprising a filter

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE102007060851A1 (en) 2007-12-18 2009-06-25 BSH Bosch und Siemens Hausgeräte GmbH Household appliance for the care of laundry items and method for removing lint
DE102009001610A1 (en) * 2009-03-17 2010-09-23 BSH Bosch und Siemens Hausgeräte GmbH Method for producing information about fibrous material condition of component e.g. heat exchanger, in condensation dryer, involves producing information depending on evaluation of physical parameter of synchronous motor
EP3109358B1 (en) * 2009-06-29 2018-08-22 Electrolux Home Products Corporation N.V. Appliance for drying laundry
EP2386679B1 (en) * 2010-05-13 2020-07-01 Samsung Electronics Co., Ltd. Clothes dryer
DE102010039603A1 (en) * 2010-08-20 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Laundry treatment device with lint filter
EP2458072A1 (en) * 2010-11-29 2012-05-30 Electrolux Home Products Corporation N.V. Laundry dryer
SE537671C2 (en) * 2011-08-15 2015-09-29 Asko Cylinda Ab Cloth dryer with lint filter cleaning mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11542654B2 (en) 2018-12-28 2023-01-03 Whirlpool Corporation Supplemental condensate delivery system having a snap-in drain member
DE102020100759A1 (en) * 2020-01-15 2021-07-15 Miele & Cie. Kg Method and control device for operating a cleaning device and cleaning device

Also Published As

Publication number Publication date
WO2015074836A1 (en) 2015-05-28
EP3071744A1 (en) 2016-09-28

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