EP1984553A1 - Seche-linge domestique avec double ventilateur - Google Patents

Seche-linge domestique avec double ventilateur

Info

Publication number
EP1984553A1
EP1984553A1 EP07711398A EP07711398A EP1984553A1 EP 1984553 A1 EP1984553 A1 EP 1984553A1 EP 07711398 A EP07711398 A EP 07711398A EP 07711398 A EP07711398 A EP 07711398A EP 1984553 A1 EP1984553 A1 EP 1984553A1
Authority
EP
European Patent Office
Prior art keywords
vanes
fan
machine according
clothes
air
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
EP07711398A
Other languages
German (de)
English (en)
Other versions
EP1984553B1 (fr
Inventor
Ugo Favret
Flavio Noviello
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 Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Publication of EP1984553A1 publication Critical patent/EP1984553A1/fr
Application granted granted Critical
Publication of EP1984553B1 publication Critical patent/EP1984553B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 
    • D06F58/24—Condensing 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • 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
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis

Definitions

  • the present invention relates to an improved type of clothes drying machine, preferably of the domestic kind, which operates in a particularly efficient manner.
  • Clothes drying machines which operate using different methods are known, in particular those operating by means of condensation of a flow of hot air which is blown into the drum and which removes the moisture contained in the clothes or by discharging externally said flow of moist hot air.
  • these machines are made by installing a heating and ventilation system, normally a ventilator consisting of a fan and associated electric motor, which draws the air from the outside and by means of suitable ducts heats it and blows it into the drum containing the clothes to be dried.
  • a ventilator consisting of a fan and associated electric motor, which draws the air from the outside and by means of suitable ducts heats it and blows it into the drum containing the clothes to be dried.
  • a heating element is installed inside said duct and, suitably activated, heats the air which passes over it and is blown in by said ventilator, so that hot air is introduced into the drum so as to cause evaporation of the moisture contained in the clothes.
  • the hot air After being introduced into the drum, the hot air causes evaporation of the moisture contained in the clothes and therefore is practically saturated or completely saturated with it; said air is then propelled by said ventilator, creating a continuous flow which is directed into a suitable rnn(ifin.qatinn rip.vi np _. nana! Iy rnnsi sting of a heat exchanger which is passed through, along the so-called "hot” path, by said moist hot air flow and, along the so-called “cold” path, by a substantially continuous flow of air drawn from the environment and introduced back into the environment after passing through said exchanger.
  • said air flow along the "cold" path is also activated and maintained by a ventilator operated by a respective electric motor.
  • Said clothes drying machines are fairly simple, low-cost and operationally reliable machines, but, as is well-known, they have the common drawback that they are significantly noisy owing to the air flow which is blown in at a considerable rate inside the suction and discharge ducts.
  • Fig. 1 shows a general schematic diagram of a clothes drying machine provided with a condenser and two fans which are rigidly connected together, according to the prior art
  • FIG. 2 and 3 show two perspective views, i.e. a front view and side view, respectively, of a fan for circulating air in a machine according to the invention
  • - Fig. 4 shows a front view of the said fan
  • - Fig. 5 shows a cross-sectional view through the centre of the said fan
  • FIG. 6 shows a front view of a variant of embodiment of the fan according to the invention
  • FIG. 7 shows, in a same diagram, two separate graphs illustrating the progression of the pressure and electric power consumption of the motor in a clothes drying machine with a fan according to the prior art (graph A) and with a fan which is the same, but equipped with the present invention (graph B) , respectively.
  • a drum l for containing the clothes to be dried and has, associated with it, a duct 2 for circulation of the drying air; the latter also passes through a condenser 3 which is able to condense the moisture present in the air passing through it, said condenser being passed through by a "cold" air flow, namely one which is drawn from the environment and conveyed to the said condenser 3 via an associated duct 4.
  • Both the ducts 2 and 4 contain inside them two respective fans 5, 6 for actuating the respective drying and cooling air flows .
  • One of said fans, or both of them, consist of two sets of vanes which are arranged on the outer surface of a respective cylindrical form, said two cylindrical forms being understood in the non-material sense.
  • Said cylindrical forms are moreover coaxial and the radius of a first cylindrical form is smaller than the radius of the second cylindrical form.
  • vanes 10, 11, 12 ... of the first set, or outer set are rigidly supported by a wall "P" arranged along a geometric base of the respective cylindrical form, and the supporting structure of said fan is thus formed.
  • vanes of the set of inner vanes 20, 21, 22 5 ... of the second set are likewise supported on said wall "P" such that the vanes of both sets are joined together and can rotate in synchronism.
  • the latter in order to avoid LO damaging vortices on the inner vanes, advantageously the latter have a shape which is not flat but curved, i.e. with the associated concavities Cl, C2, C3 , etc., directed in the sense of rotation.
  • the fan according to the invention is thus formed.
  • Fig. 7 shows two graphs illustrating the flowrate of a fan with and without the invention, the graph A showing the pressure and the consumption of a fan without the invention and the graph B showing the corresponding parameters of the same fan to which the set of inner vanes according to the invention has been added.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un sèche-linge avec un tambour (1) où doivent être placés les vêtements, un ventilateur (5) qui souffle un courant d'air de séchage à travers un tel tambour, un condensateur (3) dans lequel entre ce courant d'air de séchage, une conduite d'air (4) de refroidissement qui souffle un second courant d'air frais à travers le condensateur, produit par un second ventilateur (6) raccordé à la conduite d'air; au moins un de ces ventilateurs est composé d'un jeu de pales (10, 11, 12) externes et un second jeu de pales (21, 22, 23) internes qui tournent sur un axe commun (X), et les pales du premier jeu sont disposées le long d'une structure cylindrique, tandis que le second jeu de pales est disposé le long d'une seconde structure cylindrique à l'intérieur de la première.
EP07711398.3A 2006-02-15 2007-01-29 Seche-linge domestique avec double ventilateur Not-in-force EP1984553B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000004U ITPN20060004U1 (it) 2006-02-15 2006-02-15 Asciugabiancheria domestica con doppia ventola.
PCT/EP2007/000723 WO2007093274A1 (fr) 2006-02-15 2007-01-29 Seche-linge domestique avec double ventilateur

Publications (2)

Publication Number Publication Date
EP1984553A1 true EP1984553A1 (fr) 2008-10-29
EP1984553B1 EP1984553B1 (fr) 2013-11-20

Family

ID=38066433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07711398.3A Not-in-force EP1984553B1 (fr) 2006-02-15 2007-01-29 Seche-linge domestique avec double ventilateur

Country Status (7)

Country Link
US (1) US20090071029A1 (fr)
EP (1) EP1984553B1 (fr)
KR (1) KR20080094707A (fr)
CN (1) CN101384766B (fr)
BR (1) BRPI0707934A2 (fr)
IT (1) ITPN20060004U1 (fr)
WO (1) WO2007093274A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7627960B2 (en) * 2003-06-30 2009-12-08 General Electric Company Clothes dryer drum projections
DE102008014305A1 (de) * 2008-03-14 2009-09-17 BSH Bosch und Siemens Hausgeräte GmbH Ablufttrockner mit Umluftanteil sowie Verfahren zu seinem Betrieb
WO2014153748A1 (fr) * 2013-03-28 2014-10-02 无锡小天鹅股份有限公司 Ventilateur centrifuge et sèche-linge comprenant celui-ci
CN103225625A (zh) * 2013-03-28 2013-07-31 无锡小天鹅股份有限公司 离心风扇和具有其的干衣机
CN105570342A (zh) * 2016-02-18 2016-05-11 太仓钰丰机械工程有限公司 一种带有双螺旋叶片的硅油风扇离合器
CN106678968B (zh) * 2016-12-30 2022-04-19 广东美的制冷设备有限公司 离心风轮、组合离心风轮及空调器
CN106678967B (zh) * 2016-12-30 2022-04-12 广东美的制冷设备有限公司 离心风轮、组合离心风轮及空调器
CN113430798B (zh) * 2021-06-26 2023-06-30 嘉兴劲耀光电科技有限公司 一种具有新风净化空气的电动晾衣架
EP4435170A1 (fr) * 2023-03-20 2024-09-25 Arçelik Anonim Sirketi Appareil électroménager

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57153996A (en) * 1981-03-20 1982-09-22 Rokugou Seisakusho:Kk Impeller for single suction centrifugal type fan
JPH0798000A (ja) * 1993-09-28 1995-04-11 Takao Kobayashi 多翼遠心送風機の羽根車の構造、及びその製法。
US6653755B2 (en) * 2001-05-30 2003-11-25 Intel Corporation Radial air flow fan assembly having stator fins surrounding rotor blades
US6877954B2 (en) * 2003-04-08 2005-04-12 Shueei-Muh Lin Eccentric heat dispensing fans
ITPN20030015U1 (it) * 2003-05-09 2004-11-10 Electrolux Home Products Corporatio N N V Asciugabiancheria domestica con ventola perfezionata.
US20050186070A1 (en) * 2004-02-23 2005-08-25 Ling-Zhong Zeng Fan assembly and method
DE202004012015U1 (de) * 2004-07-31 2005-12-22 Ebm-Papst Landshut Gmbh Radialgebläserad
US7207779B2 (en) * 2004-08-18 2007-04-24 Sunonwealth Electric Machine Industry Co., Ltd. Impeller for radial-flow heat dissipating fan
US20060051203A1 (en) * 2004-09-09 2006-03-09 Sen-Yung Lee High volume fan device for removing heat from heat sources
EP1741934B1 (fr) * 2005-07-04 2015-06-10 MAHLE Behr GmbH & Co. KG Roue
TWI299074B (en) * 2005-11-11 2008-07-21 Delta Electronics Inc Centrifugal fan and impeller thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007093274A1 *

Also Published As

Publication number Publication date
CN101384766B (zh) 2013-02-27
US20090071029A1 (en) 2009-03-19
BRPI0707934A2 (pt) 2011-05-17
EP1984553B1 (fr) 2013-11-20
ITPN20060004U1 (it) 2007-08-16
WO2007093274A1 (fr) 2007-08-23
KR20080094707A (ko) 2008-10-23
CN101384766A (zh) 2009-03-11

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