EP1013217B1 - Waschmachine mit einer Trocknungsvorrichtung - Google Patents

Waschmachine mit einer Trocknungsvorrichtung Download PDF

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Publication number
EP1013217B1
EP1013217B1 EP99118971A EP99118971A EP1013217B1 EP 1013217 B1 EP1013217 B1 EP 1013217B1 EP 99118971 A EP99118971 A EP 99118971A EP 99118971 A EP99118971 A EP 99118971A EP 1013217 B1 EP1013217 B1 EP 1013217B1
Authority
EP
European Patent Office
Prior art keywords
vessel
water vapour
washing machine
washing
chamber
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.)
Revoked
Application number
EP99118971A
Other languages
English (en)
French (fr)
Other versions
EP1013217A1 (de
Inventor
Daniele Favaro
Piero Babuin
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 Zanussi Elettrodomestici SpA
Electrolux Zanussi SpA
Original Assignee
Electrolux Zanussi Elettrodomestici SpA
Electrolux Zanussi SpA
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11395451&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1013217(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electrolux Zanussi Elettrodomestici SpA, Electrolux Zanussi SpA filed Critical Electrolux Zanussi Elettrodomestici SpA
Publication of EP1013217A1 publication Critical patent/EP1013217A1/de
Application granted granted Critical
Publication of EP1013217B1 publication Critical patent/EP1013217B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/48—Drying arrangements
    • A47L15/483—Drying arrangements by using condensers

Definitions

  • the present invention refers to a washing machine, in particular of the household type, which is also adapted to carry out a cycle for drying the washload contained therein.
  • washing machine is used here to mean a clothes drier, a clothes washer-drier or any other similar household appliance, such as in particular a dishwasher.
  • Washing machines provided with a drying function for the washload contained in their drum or vessel are well-known in the art.
  • a condenser is arranged in the washing vessel of a dishwasher and a forced draught of cooling ambient air is caused to flow therethrough.
  • the water vapour that is present in the washing vessel at the end of a rinsing phase performed with hot water condenses on the outer walls of said condenser, thereby promoting drying of the washload items.
  • Document GB-A- 982 830 which represents the closest state of the art, describes a dish washing machine where the steam, collected in the uppermost part of the washing chamber is removed though a suction opening by a suction fan. This steam condenses on the wall of the pipes connecting the fan to the washing chamber and the condensate returns into the lower portion of the washing chamber through an opening.
  • the washing machine is preferably an automatic dishwasher that mainly comprises a washing vessel 1 provided on its lower portion with a sump 2 for collecting the water.
  • the vessel 1 accomodates at least a rack 1 for supporting the items (not shown) to be washed by means of water jets adapted to be ejected by appropriate spraying means 4.
  • the dishwasher is of the type adapted to automatically perform selectable operation cycles, of which at least one comprises a final washload rinsing phase carried out with hot water (eg. water heated up to a temperature of approx. 70°C).
  • hot water eg. water heated up to a temperature of approx. 70°C.
  • water vapour is usually present in the washing vessel so that, for the washload to be dried, such a water vapour must be eliminated or removed therefrom.
  • the machine further comprises compressor means 5 having at least an inlet 6 and at least an outlet 7.
  • the inlet 6 is connected to an upper aperture 8 of the washing vessel via a conduit 10.
  • the outlet 7 is preferably connected to a lower aperture 9 of the washing vessel via a conduit 11.
  • the compressor 5 and the conduits 10, 11 are preferably arranged on the outside of the washing vessel 1.
  • the compressor 5 can be of any type adapted to suit the purpose. For instance, it can be of a type which is readily available on the market with an appropriately and advantageously limited power rating, low space requirements, and at reduced costs, such as for example a Model 006LCD/30-5 (Trademark) compressor of ASF Thomas Industries GmbH, traditionally used in a fully different area of application such as the one of inhalators.
  • the compressor 5 is of the type comprising a chamber 12 in which a piston 13 is adapted to be actuated with a reciprocating motion by an electric motor, or the like, controlled by the programme sequence control unit of the machine.
  • the motor and the programme sequence control unit are not shown in the drawing. It shall anyway be appreciated that the compressor 5 can also be of a different type, such as for instance of the electromagnetic type with the moving member oscillating with a reciprocating motion.
  • the inlet 6 and the outlet 7 of the compressor are associated to respective non-return valves 14, 15. Furthermore, the inlet 6 has preferably a cross-section area that is larger than the one of the outlet 7.
  • the vessel 1, the compressor 5 and the conduits 10, 11 practically form a drying system, preferably, but not necessarily or exclusively in a closed-loop configuration, along which the water vapour that develops in the washing vessel is therefore capable of being circulated in a single direction, as this is shown by the arrows in the drawing.
  • the compressor 5 Upon conclusion of the above mentioned final rinsing phase, the compressor 5 is adapted to be driven in view of performing a drying phase in the manner described below.
  • the compressor 5 takes in water vapour from the washing vessel 1 via the conduit 10 and the valve 14 which opens in order to enable the water vapour to enter the chamber 12.
  • the performance of the drying system can be further enhanced by arranging at least a portion of the chamber 12 of the compressor in a heat-exchange relation with the ambient on the outside of the washing vessel 1, wherein said ambient is at a temperature T0 (eg. 25°C) that is substantially lower than the temperature T (approx.70°C) prevailing inside the vessel at the beginning of the drying phase.
  • T0 eg. 25°C
  • T approximately lower than the temperature T (approx.70°C) prevailing inside the vessel at the beginning of the drying phase.
  • the compression of the water vapour inside the chamber 12 of the compressor causes also the temperature thereof to correspondingly increase up to a value T1 > T > T0, wherein such a temperature T1 may for instance have a value of approx. 80°C.
  • the greater temperature difference T1 - T0 between the compressed water vapour and the ambient outside the compressor enables the water vapour to be more effectively cooled down, thereby promoting its condensation.

Landscapes

  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Drying Of Solid Materials (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (5)

  1. Waschmaschine, umfassend ein Waschbehälter, in dem Wasserdampf zu Beginn einer Trocknungsphase der im selben Behälter beherbergten Waschladungsgegenstände vorhanden ist, dadurch gekennzeichnet, daß sie ferner Kompressormittel (5) umfaßt, die eine Kammer (12) mit wenigstens einem Einlaß (6) und wenigstens einem Auslaß (7) aufweisen, welche mit einer Öffnung (8) des Waschbehälters (1) beziehungsweise mit einer Auslaßleitung (11) verbunden sind, wobei die Kompressormittel angepaßt ist, um Wasserdampf vom Behälter durch den Einlaß (6) anzusaugen, um den so angesaugten Wasserdampf zu komprimieren, um ihn zu veranlassen, in ausreichendem Maße zu kondensieren und in Richtung der Auslaßleitung (11) zu befördern.
  2. Waschmaschine nach Ansprüchen 1, dadurch gekennzeichnet, daß die Auslaßleitung (11) mit einer weiteren Öffnung (9) des Behälters verbunden ist, so daß der Behälter (1), die Kompressormittel (5) und die Leitungen (10, 11) ein Trocknungssystem mit geschlossenem Kreislauf bilden, längs dessen der Wasserdampf zirkuliert werden kann, wobei sich das resultierende Kondensat in dem Behälter ansammelt.
  3. Waschmaschine nach Anspruch 2, dadurch gekennzeichnet, daß der Einlaß (6) und der Auslaß (7) der Kompressormittel (5) mit entsprechenden Rückschlagventilen (14, 15) versehen sind, so daß der Wasserdampf in dem geschlossenen Kreislauf nur in einer einzigen Richtung zirkuliert wird.
  4. Waschmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Einlaß (6) der Kammer (12) der Kompressormittel (5) eine größere Querschnittsfläche hat als der Auslaß (7) derselben Kammer.
  5. Waschmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Kammer (12) der Kompressormittel (5) sich wenigstens teilweise in einer Wärmeaustauschbeziehung mit der Umgebung außerhalb des Waschbehälters befindet, um die Kondensation des Wasserdampfes, der innerhalb derselben Kammer komprimiert wird, zu fördern.
EP99118971A 1998-12-21 1999-09-27 Waschmachine mit einer Trocknungsvorrichtung Revoked EP1013217B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN980093 1998-12-21
IT1998PN000093A IT1305559B1 (it) 1998-12-21 1998-12-21 Macchina lavatrice con sistema di asciugatura perfezionato

Publications (2)

Publication Number Publication Date
EP1013217A1 EP1013217A1 (de) 2000-06-28
EP1013217B1 true EP1013217B1 (de) 2001-12-19

Family

ID=11395451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118971A Revoked EP1013217B1 (de) 1998-12-21 1999-09-27 Waschmachine mit einer Trocknungsvorrichtung

Country Status (4)

Country Link
EP (1) EP1013217B1 (de)
DE (1) DE69900630T2 (de)
ES (1) ES2169937T3 (de)
IT (1) IT1305559B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8875721B2 (en) 2011-12-15 2014-11-04 Whirlpool Corporation Dishwasher with closed loop condenser
US10595706B2 (en) 2014-07-23 2020-03-24 Whirlpool Corporation Dishwasher with air system
CN109567710A (zh) * 2018-12-06 2019-04-05 苏维阵 一种旋流清洗高温真空消毒烘干的智能洗碗机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1380262A (fr) * 1963-01-31 1964-11-27 Siemens Elektrogeraete Gmbh Machine automatique à laver la vaisselle
SE468580B (sv) * 1989-02-03 1993-02-15 Electrolux Ab Diskmaskin med kondensationskammare
IT225669Y1 (it) * 1991-11-26 1997-01-13 Zanussi Elettrodomestici Lavastoviglie con sistema di asciugatura a condensazione
IT1289372B1 (it) * 1996-04-10 1998-10-02 Electrolux Zanussi Elettrodome Lavastoviglie con sistema di asciugatura perfezionato

Also Published As

Publication number Publication date
ES2169937T3 (es) 2002-07-16
ITPN980093A1 (it) 2000-06-21
IT1305559B1 (it) 2001-05-09
DE69900630D1 (de) 2002-01-31
EP1013217A1 (de) 2000-06-28
ITPN980093A0 (it) 1998-12-21
DE69900630T2 (de) 2002-06-13

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