EP0566476A1 - Laufradreinigung für eine Wasch/Trockenmaschine - Google Patents

Laufradreinigung für eine Wasch/Trockenmaschine Download PDF

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Publication number
EP0566476A1
EP0566476A1 EP93400958A EP93400958A EP0566476A1 EP 0566476 A1 EP0566476 A1 EP 0566476A1 EP 93400958 A EP93400958 A EP 93400958A EP 93400958 A EP93400958 A EP 93400958A EP 0566476 A1 EP0566476 A1 EP 0566476A1
Authority
EP
European Patent Office
Prior art keywords
turbine
blades
water
cleaning
washing
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
EP93400958A
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English (en)
French (fr)
Other versions
EP0566476B1 (de
Inventor
Marie-Gérard Merlet
Daniel Barritaud
Philippe Breger
Jacky Brillanceau
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.)
Esswein SA
Original Assignee
Esswein SA
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 Esswein SA filed Critical Esswein SA
Publication of EP0566476A1 publication Critical patent/EP0566476A1/de
Application granted granted Critical
Publication of EP0566476B1 publication Critical patent/EP0566476B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/705—Adding liquids
    • 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

Definitions

  • the present invention relates to a device for cleaning the ventilation circuit of a household appliance dryer and in particular of a washer-dryer machine.
  • Such machines include a ventilated air circulation device, this ventilation being carried out by a turbine.
  • the air flow in which the laundry is brewed will inevitably transport fibers extracted from this load of laundry during the spin phase and / or during the drying phase. These fibers transported by the air flow will deposit or accumulate in different places in the drying circuit. Obstacles or changes of sections of this ventilation circuit favor this phenomenon of fiber deposition which can go as far as the complete obstruction of sections.
  • the rotating turbine and the exhaust duct (called condenser) to the air tank are unavoidable major obstacles since they create air circulation.
  • This phenomenon of deposit of fibers on the turbine can cause important dysfunctions.
  • the turbine is loaded with fibers and loses its aerodynamics.
  • the first consists of incorporating a filter into the air circuit, but this requires regular maintenance at the expense of the user.
  • a second solution is to use water splashes during a spin phase, but this only cleans the areas very close to the tank, in particular it is not possible to reach all areas of the drying circuit.
  • the present invention makes it possible to carry out an effective cleaning of the turbine while avoiding the drawbacks of the existing solutions thanks to a system of solenoid valves making it possible to direct a jet of water tangentially on the blades of the turbine which is simultaneously rotated .
  • the dried fibers accumulated on the turbine blades and in the circuit absorb water, and their mass rises significantly.
  • the rotation of the turbine driven by the motor allows, thanks to the centrifugal force due to the rotation of the turbine, the separation of the fibers and their evacuation with the mixed flow of water and air.
  • the present invention therefore relates to a device for cleaning a ventilation circuit comprising a turbine chamber, a turbine provided with blades and driven by a motor and which is characterized in that it comprises at least one opening opening into the interior of the turbine chamber and diffusing at least one jet of liquid on the turbine while the latter is rotating.
  • the main advantage of this device is that it does not require any additional bulky parts since it integrates perfectly with the already existing device.
  • FIG. 1 represents a sectional view of part of the ventilation circuit provided with the device according to one embodiment of the invention. 'invention.
  • a ventilation circuit can comprise, as in FIG. 1, a turbine chamber 1, a turbine 2 provided with blades 3, and a condenser 4.
  • a communication in order to create a closed ventilation circuit, a communication, not shown in the figure, opens out of the tank preferably in the central part of the turbine chamber.
  • a conduit 7 called "purge channel” connects the bottom of the turbine chamber to a lower part of the condenser 4 (for example) in order to evacuate the water present in the bottom of the turbine chamber due to the spinning or the operation of the invention explained below.
  • the turbine shown in the drawing consists of a disc 2, one face of which is provided with blades 3 perpendicular thereto, but all types of turbines and blades can be used without departing from the scope of the invention,
  • This type of centrifugal impeller is preferably offset from the center of the turbine chamber in order to create an increasingly large volume along the walls (ultimately leading to the condenser) allowing the volume of increasing air centrifuged by the blades on the walls.
  • the turbine 2 is driven in rotation by a motor (not shown in the figure) which can be a synchronous, asynchronous, universal or any other type motor.
  • the blades 3 of the rotating turbine create an air flow which is evacuated by the condenser 4 towards the enclosure containing the load of laundry to be dried (not shown in the figure) according to the dotted lines. This is the operation of the ventilated air circulation device. This air flow is directed into the tank on the heating elements for which it takes care of the calorific power in order to dry the mass of laundry contained in the tank.
  • the invention consists in causing one or more openings 6 diffusing in the turbine chamber one diffusing one or more jets J of liquid (as water for example), and simultaneously rotating the turbine 2 so that the centrifugal force drives the fibers 5 loaded with water in the condenser 4.
  • Fibers that have settled in the ventilation will also take care of the water evacuated from the turbine chamber and be carried away by the air flow.
  • openings diffusing water jets can be fitted at various sensitive points of the circuit.
  • the water jets are directed tangentially to the turbine, that is to say in a plane perpendicular to the planes of the blades, which allows all of the surfaces of the blades to be swept by the water jets at the same time as they are driven by them at first and by the engine at a second time.
  • the water circuit supplying the water jets through the openings can be a circuit parallel to the washing water circuit or an independent circuit. In the latter case, a detergent additive can be added to the water for greater cleaning efficiency of the turbine.
  • This operation of rotating the turbine simultaneously with watering can be controlled manually by the user or automatically for a determined period at the end (or at the beginning) of each drying cycle (or of a certain number of drying cycles) or during each wash filling.
  • a system of valves can prevent the air-water mixture from entering the tank where the laundry is dry.
  • the openings can be controlled by solenoid valves.
  • the present invention applies to laundry drying machines or to washing and drying machines and, more generally to all devices provided with an air ventilation system and of which automatic cleaning is essential.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP93400958A 1992-04-14 1993-04-13 Laufradreinigung für eine Wasch/Trockenmaschine Expired - Lifetime EP0566476B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9204549A FR2689939B1 (fr) 1992-04-14 1992-04-14 Dispositif de nettoyage de turbine pour machine lavante-sechante.
FR9204549 1992-04-14

Publications (2)

Publication Number Publication Date
EP0566476A1 true EP0566476A1 (de) 1993-10-20
EP0566476B1 EP0566476B1 (de) 1997-01-15

Family

ID=9428834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400958A Expired - Lifetime EP0566476B1 (de) 1992-04-14 1993-04-13 Laufradreinigung für eine Wasch/Trockenmaschine

Country Status (3)

Country Link
EP (1) EP0566476B1 (de)
DE (1) DE69307380T2 (de)
FR (1) FR2689939B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1353004A1 (de) * 2002-04-09 2003-10-15 Bonferraro S.p.A. Waschmachine mit selbstreinigendem Trocknungskreislauf
KR100401222B1 (ko) * 1994-08-02 2003-12-11 보쉬-지멘스 하우스게레테 게엠바하 건조가능한세탁기
WO2005028876A1 (de) 2003-09-25 2005-03-31 Abb Research Ltd. Verdichterreinigung
WO2006114802A1 (en) * 2005-04-27 2006-11-02 Ln2 S.R.L. A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.
EP2103730A1 (de) * 2008-03-14 2009-09-23 BSH Bosch und Siemens Hausgeräte GmbH Ablufttrockner mit Umluftanteil sowie Verfahren zu seinem Betrieb
DE102023200521A1 (de) 2023-01-24 2024-07-25 BSH Hausgeräte GmbH Verfahren zur Reinigung eines Luftheizungssystems in einem wasserführenden Haushaltsgerät und hierfür geeignetes wasserführendes Haushaltsgerät

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113897760B (zh) * 2021-11-11 2024-05-10 海信冰箱有限公司 洗衣机及其控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB801758A (en) * 1955-09-26 1958-09-17 Davidson & Co Ltd Improvements in or relating to centrifugal fans
US3116984A (en) * 1961-04-19 1964-01-07 Maytag Co Lint extractor for washer-drier
US3796509A (en) * 1972-05-10 1974-03-12 Westinghouse Electric Corp Scroll washer for centrifugal fans
DE3306243A1 (de) * 1983-02-23 1984-08-23 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum reinigen mit textilstaub beladener luft
GB2171457A (en) * 1985-02-25 1986-08-28 Chaw Chonq Chiang Cleaning fume exhausting fans

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB801758A (en) * 1955-09-26 1958-09-17 Davidson & Co Ltd Improvements in or relating to centrifugal fans
US3116984A (en) * 1961-04-19 1964-01-07 Maytag Co Lint extractor for washer-drier
US3796509A (en) * 1972-05-10 1974-03-12 Westinghouse Electric Corp Scroll washer for centrifugal fans
DE3306243A1 (de) * 1983-02-23 1984-08-23 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum reinigen mit textilstaub beladener luft
GB2171457A (en) * 1985-02-25 1986-08-28 Chaw Chonq Chiang Cleaning fume exhausting fans

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100401222B1 (ko) * 1994-08-02 2003-12-11 보쉬-지멘스 하우스게레테 게엠바하 건조가능한세탁기
EP1353004A1 (de) * 2002-04-09 2003-10-15 Bonferraro S.p.A. Waschmachine mit selbstreinigendem Trocknungskreislauf
WO2005028876A1 (de) 2003-09-25 2005-03-31 Abb Research Ltd. Verdichterreinigung
US7524166B2 (en) 2003-09-25 2009-04-28 Abb Research Ltd Compressor cleaning system
WO2006114802A1 (en) * 2005-04-27 2006-11-02 Ln2 S.R.L. A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.
EP2103730A1 (de) * 2008-03-14 2009-09-23 BSH Bosch und Siemens Hausgeräte GmbH Ablufttrockner mit Umluftanteil sowie Verfahren zu seinem Betrieb
DE102023200521A1 (de) 2023-01-24 2024-07-25 BSH Hausgeräte GmbH Verfahren zur Reinigung eines Luftheizungssystems in einem wasserführenden Haushaltsgerät und hierfür geeignetes wasserführendes Haushaltsgerät

Also Published As

Publication number Publication date
FR2689939A1 (fr) 1993-10-15
FR2689939B1 (fr) 1995-10-20
DE69307380D1 (de) 1997-02-27
EP0566476B1 (de) 1997-01-15
DE69307380T2 (de) 1997-05-15

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