EP2586357A1 - Drying device for a dishwasher - Google Patents

Drying device for a dishwasher Download PDF

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Publication number
EP2586357A1
EP2586357A1 EP12190120.1A EP12190120A EP2586357A1 EP 2586357 A1 EP2586357 A1 EP 2586357A1 EP 12190120 A EP12190120 A EP 12190120A EP 2586357 A1 EP2586357 A1 EP 2586357A1
Authority
EP
European Patent Office
Prior art keywords
casing
dishwasher
tube
water supply
water
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.)
Withdrawn
Application number
EP12190120.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Enzo Brignone
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.)
Bitron SpA
Original Assignee
Bitron 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
Application filed by Bitron SpA filed Critical Bitron SpA
Publication of EP2586357A1 publication Critical patent/EP2586357A1/en
Withdrawn legal-status Critical Current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
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops

Definitions

  • the present invention relates to a drying device for dishwashers.
  • a known device of this type comprises a receptacle made of plastic material, typically polypropylene, within which cold water is made to flow so as to cause the vapour formed in the washing chamber to condense on the outer surface of the receptacle.
  • the object of the present invention is to provide a drying device which has an increased heat exchange surface while also having a low production cost.
  • a drying device for dishwashers comprising a vapour condensation chamber formed within a casing and containing a corrugated tube within which there flows water for causing the condensation of vapour on its outer surface, wherein the aforesaid corrugated tube has a serpentine-shaped portion.
  • the corrugated tube which is economical to be produced and which has a high surface area per unit of length, enabling the heat exchange to be increased.
  • the tube contains a relatively small quantity of water, which, in the preferred case in which the tube forms a portion of the conduit for supplying water to the dishwasher, can easily be renewed by opening the main filling valve.
  • the bends of the serpentine-shaped corrugated tube enable the heat exchange surface per unit of volume of the condensation chamber to be increased considerably, thereby significantly increasing the extent of the change from the vapour state to the liquid state.
  • the device according to the invention can be produced in the form of an independent module, which can be mounted on a water supply device of the dishwasher, commonly called an air break, or in the form of an integral part of the air break.
  • a further object of the present invention is a dishwasher comprising a drying device of the aforementioned type.
  • a drying device for a dishwasher comprising a vapour condensation chamber 10, which is formed within a casing of flattened shape 12 and which contains a corrugated tube 14, is integrated into a water supply device commonly called an "air break" 16.
  • the casing of flattened shape 12 forms a prolongation of the casing of the casing of the air break 16, while the corrugated tube 14 forms a portion of a water supply conduit.
  • the ends of the tube 14 are fitted on to sleeves 18 which protrude into the casing of the air break 16, in such a way that the tube 14, which includes a serpentine-shaped portion 20 having a plurality of bends and held up by a support 22 within the chamber 10, acts as a connecting link between a first and a second section 24, 26 of the supply conduit, which form part of the air break 16.
  • the air break itself has an entirely conventional structure and has an opening 28 which, when mounted at the side of a side wall of the washing chamber of the dishwasher, acts as a passage for the discharge of vapours which are formed during operation; the air break also has further sleeves 30, 32 for conveying water to be softened to a softener (not shown in the figures) and for sending the water required for the formation of a regeneration brine to the softener.
  • the vapour entering the chamber 10 comes into contact with the outer surface of the tube 14, which is cold because of the presence of water within it, and the vapour is therefore able to condense.
  • the corrugation of the surface of the tube 14 and its serpentine shape provide a large heat exchange surface, thus increasing the amount of condensation.
  • FIG. 3 to 7 Another embodiment of the device according to the invention is shown in Figures 3 to 7 , in which numbers identical to those used in the preceding figures denote identical or equivalent parts.
  • the drying device forms an independent module, which can be associated with a water supply device 16.
  • the casing 12 is flat and is substantially rectangular in plan view, with a protuberance 34 at one end of one of the short sides.
  • the casing 12 also has a plurality of resilient teeth 36 which are spaced apart, for fastening to the water supply device 16.
  • the corrugated tube 14 forms a portion of a water supply conduit, located upstream of an air gap portion 27 formed in the device 16.
  • the support 22 of the serpentine portion 20 of the tube 14 is formed by a series of strips offset from each other in two orthogonal directions, with recesses into which corresponding sections of the tube 14 can be fitted.
  • the casing 12 ( Figure 6 ) can be made by blow moulding in one piece, into which the tube 14 with its support 22 is subsequently inserted.
  • the casing 12 can be made by injection moulding in two pieces which are welded together subsequently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
EP12190120.1A 2011-10-28 2012-10-26 Drying device for a dishwasher Withdrawn EP2586357A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000985A ITTO20110985A1 (it) 2011-10-28 2011-10-28 Dispositivo di asciugatura per lavastoviglie

Publications (1)

Publication Number Publication Date
EP2586357A1 true EP2586357A1 (en) 2013-05-01

Family

ID=45757126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12190120.1A Withdrawn EP2586357A1 (en) 2011-10-28 2012-10-26 Drying device for a dishwasher

Country Status (2)

Country Link
EP (1) EP2586357A1 (it)
IT (1) ITTO20110985A1 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10750925B2 (en) 2018-01-12 2020-08-25 Whirlpool Corporation Method of operating a dishwasher

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1926049A1 (de) * 1969-05-22 1970-11-26 Kronwitter Geb Staiber Verfahren zur Reinigung von Geschirr,insbesondere in Haushaltsgeschirrspuelmaschinen
US4995454A (en) * 1989-11-17 1991-02-26 Thompson Donovan S Heat exchanger with corrugated tubes
EP0753282A1 (en) * 1995-07-14 1997-01-15 TECNOPLASTICA PREALPINA S.p.A. A device for cooling and condensing the steam released from the washing drum of a dishwasher machine and the like
EP0978250A2 (en) * 1998-08-06 2000-02-09 Bitron S.p.A. A device for drying the dishes at the end of the washing process of a dishwasher
US20050113698A1 (en) * 2003-11-21 2005-05-26 Kjell Kristoffersen Ultrasound probe transceiver circuitry
EP1825800A2 (de) * 2006-02-22 2007-08-29 V-Zug AG Geschirrspüler mit Mitteln zum Abziehen von Feuchte aus dem Bottich
DE102007007133A1 (de) * 2007-02-13 2008-08-14 Meiko Maschinenbau Gmbh & Co. Kg Frontlader-Geschirrspülmaschine mit Wärmerückgewinnung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1926049A1 (de) * 1969-05-22 1970-11-26 Kronwitter Geb Staiber Verfahren zur Reinigung von Geschirr,insbesondere in Haushaltsgeschirrspuelmaschinen
US4995454A (en) * 1989-11-17 1991-02-26 Thompson Donovan S Heat exchanger with corrugated tubes
EP0753282A1 (en) * 1995-07-14 1997-01-15 TECNOPLASTICA PREALPINA S.p.A. A device for cooling and condensing the steam released from the washing drum of a dishwasher machine and the like
EP0978250A2 (en) * 1998-08-06 2000-02-09 Bitron S.p.A. A device for drying the dishes at the end of the washing process of a dishwasher
US20050113698A1 (en) * 2003-11-21 2005-05-26 Kjell Kristoffersen Ultrasound probe transceiver circuitry
EP1825800A2 (de) * 2006-02-22 2007-08-29 V-Zug AG Geschirrspüler mit Mitteln zum Abziehen von Feuchte aus dem Bottich
DE102007007133A1 (de) * 2007-02-13 2008-08-14 Meiko Maschinenbau Gmbh & Co. Kg Frontlader-Geschirrspülmaschine mit Wärmerückgewinnung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10750925B2 (en) 2018-01-12 2020-08-25 Whirlpool Corporation Method of operating a dishwasher
US10986977B2 (en) 2018-01-12 2021-04-27 Whirlpool Corporation Method of operating a dishwasher

Also Published As

Publication number Publication date
ITTO20110985A1 (it) 2013-04-29

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