EP1874992A1 - A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use. - Google Patents

A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.

Info

Publication number
EP1874992A1
EP1874992A1 EP06745294A EP06745294A EP1874992A1 EP 1874992 A1 EP1874992 A1 EP 1874992A1 EP 06745294 A EP06745294 A EP 06745294A EP 06745294 A EP06745294 A EP 06745294A EP 1874992 A1 EP1874992 A1 EP 1874992A1
Authority
EP
European Patent Office
Prior art keywords
circulation system
impeller
hub
drying machines
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.)
Withdrawn
Application number
EP06745294A
Other languages
German (de)
English (en)
French (fr)
Inventor
Riccardo Massili
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.)
LN2 Srl
Original Assignee
LN2 Srl
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 LN2 Srl filed Critical LN2 Srl
Publication of EP1874992A1 publication Critical patent/EP1874992A1/en
Withdrawn legal-status Critical Current

Links

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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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 

Definitions

  • the subject of the present invention is a forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.
  • washing/drying machines for domestic use that have a forced hot-air circulation system associated with the washing drum for at least partially drying the garments contained therein upon completion of the washing cycle.
  • the air circulation system usually comprises a feeder duct incorporating an electric fan, generally a centrifugal fan with a cylindrical drum impeller and axially extending blading, which promotes the circulation of the air between the washing drum and a condenser in which the moisture collected is condensed.
  • An electrical resistor is also fitted in the feeder duct in order to heat the air before it is blown amongst the garments being dried in the washing drum.
  • the technical problem underlying the present invention is that of providing a forced air circulation system which is intended particularly for incorporation in washing/drying machines for domestic use and which is designed structurally and functionally to overcome all of the disadvantages discussed with reference to the prior art mentioned.
  • a principle object of the invention is to provide a forced circulation system which enables the filters that are conventionally provided to be omitted without compromising the good operation of the machine.
  • Figure 1 is a schematic, perspective view of the main components of a washing/drying machine according to the invention
  • Figure 2 is a perspective view of a detail of the machine of Figure 1,
  • FIGs 3 to 7 are perspective, front, side, rear and partially- sectioned elevational views, respectively, of a further detail of Figure 2.
  • a washing/drying machine formed in accordance with the present invention comprises, in known manner, a drum 1 rotatable inside a tank 2, as well as a forced air circulation system generally indicated 3.
  • the system 3 in turn is composed of a feeder duct 4 extending between a condenser 5 and an opening 6 for the delivery of the air to the drum.
  • the feeder duct 4 comprises a shell 7 which is closed by an opposing shell portion, not shown, and which houses an impeller 8 of an electric fan 9 and an electrical resistor 10 for heating the air to be introduced into the tank and drum assembly.
  • the shell 7 defines a diffuser with a cyclone configuration housing the impeller 8 and a section which connects the diffuser to the opening 6.
  • the circulation of the air in the system 3 is shown schematically by the arrows F.
  • the impeller 8 is moulded from plastics material and comprises a conical hub 11 having an ogival-shaped front portion.
  • the terms front and rear in the following context relate to the direction of the air flow.
  • the blading of the impeller 8 comprises a plurality of blades 15 which extend substantially radially from the hub 11, from a smaller-diameter, front portion 12 thereof as far as a larger-diameter, rear portion 13 thereof.
  • the blades 15 have a curved shape the curvature of which is reversed with respect to the direction of rotation of the impeller 8.
  • the blades 15 are characterized by curved leading edges 16 which, starting from a front, base portion 17 on the hub in the vicinity of the smaller-diameter, front portion thereof, have a first portion 16a which diverges progressively from the surface of the hub to reach a substantially radial arrangement and which is connected by a large-radius curve to a second portion 16b having a substantially axial arrangement, as the leading edge extends towards the rear portion of the hub.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cyclones (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP06745294A 2005-04-27 2006-04-20 A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use. Withdrawn EP1874992A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000116A ITPD20050116A1 (it) 2005-04-27 2005-04-27 Sistema di circolazione forzata dell'aria per macchine asciugatrici e lavatrici-asciugatrici, particolarmente per uso domestico.
PCT/IT2006/000269 WO2006114802A1 (en) 2005-04-27 2006-04-20 A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.

Publications (1)

Publication Number Publication Date
EP1874992A1 true EP1874992A1 (en) 2008-01-09

Family

ID=36717182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06745294A Withdrawn EP1874992A1 (en) 2005-04-27 2006-04-20 A forced air circulation system for drying machines and washing/drying machines, particularly for domestic use.

Country Status (4)

Country Link
EP (1) EP1874992A1 (it)
IT (1) ITPD20050116A1 (it)
RU (1) RU2007143968A (it)
WO (1) WO2006114802A1 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100034077A (ko) * 2008-09-23 2010-04-01 삼성전자주식회사 의류건조기
CN103726279A (zh) * 2012-10-12 2014-04-16 苏州三星电子有限公司 一种冷凝式烘干装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2432239C3 (de) * 1974-07-05 1980-07-10 Temafa, Textilmaschinenfabrik Meissner, Morgner & Co Gmbh, 5070 Bergisch Gladbach Fördergebläse für textiles Fasergut
GB2214623B (en) * 1988-01-13 1991-09-11 Creda Ltd Tumble driers
FR2689939B1 (fr) * 1992-04-14 1995-10-20 Esswein Sa Dispositif de nettoyage de turbine pour machine lavante-sechante.
DE4403224A1 (de) * 1994-02-03 1995-08-10 Vorwerk Co Interholding Radialgebläserad
JP4426776B2 (ja) * 2003-04-25 2010-03-03 株式会社やまびこ 送風用遠心羽根車
JP3625820B1 (ja) * 2003-08-20 2005-03-02 株式会社東芝 洗濯機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006114802A1 *

Also Published As

Publication number Publication date
ITPD20050116A1 (it) 2006-10-28
RU2007143968A (ru) 2009-06-10
WO2006114802A1 (en) 2006-11-02
WO2006114802A8 (en) 2007-04-26

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