WO2007093274A1 - Domestic clothes drier with twin fan - Google Patents
Domestic clothes drier with twin fan Download PDFInfo
- Publication number
- WO2007093274A1 WO2007093274A1 PCT/EP2007/000723 EP2007000723W WO2007093274A1 WO 2007093274 A1 WO2007093274 A1 WO 2007093274A1 EP 2007000723 W EP2007000723 W EP 2007000723W WO 2007093274 A1 WO2007093274 A1 WO 2007093274A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vanes
- fan
- machine according
- clothes
- air
- Prior art date
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
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800056611A CN101384766B (en) | 2006-02-15 | 2007-01-29 | Domestic clothes drier with twin fan |
US12/279,503 US20090071029A1 (en) | 2006-02-15 | 2007-01-29 | Domestic clothes drier with twin fan |
BRPI0707934-6A BRPI0707934A2 (en) | 2006-02-15 | 2007-01-29 | dual fan household clothes dryers |
EP07711398.3A EP1984553B1 (en) | 2006-02-15 | 2007-01-29 | Domestic clothes drier with twin fan |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000004U ITPN20060004U1 (en) | 2006-02-15 | 2006-02-15 | DOMESTIC TOWEL DRYER WITH DOUBLE FAN. |
ITPN2006U000004 | 2006-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007093274A1 true WO2007093274A1 (en) | 2007-08-23 |
Family
ID=38066433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/000723 WO2007093274A1 (en) | 2006-02-15 | 2007-01-29 | Domestic clothes drier with twin fan |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090071029A1 (en) |
EP (1) | EP1984553B1 (en) |
KR (1) | KR20080094707A (en) |
CN (1) | CN101384766B (en) |
BR (1) | BRPI0707934A2 (en) |
IT (1) | ITPN20060004U1 (en) |
WO (1) | WO2007093274A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2103730A1 (en) * | 2008-03-14 | 2009-09-23 | BSH Bosch und Siemens Hausgeräte GmbH | Exhaust air dryer with recirculation component and method for its operation |
EP2980304A4 (en) * | 2013-03-28 | 2016-09-14 | Wuxi Little Swan Co Ltd | Centrifugal fan and clothes dryer having same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7627960B2 (en) * | 2003-06-30 | 2009-12-08 | General Electric Company | Clothes dryer drum projections |
CN103225625A (en) * | 2013-03-28 | 2013-07-31 | 无锡小天鹅股份有限公司 | Centrifugal fan and clothes dryer with same |
CN105570342A (en) * | 2016-02-18 | 2016-05-11 | 太仓钰丰机械工程有限公司 | Silicone oil fan clutch with double spiral blades |
CN106678967B (en) * | 2016-12-30 | 2022-04-12 | 广东美的制冷设备有限公司 | Centrifugal wind wheel, combined centrifugal wind wheel and air conditioner |
CN106678968B (en) * | 2016-12-30 | 2022-04-19 | 广东美的制冷设备有限公司 | Centrifugal wind wheel, combined centrifugal wind wheel and air conditioner |
CN113430798B (en) * | 2021-06-26 | 2023-06-30 | 嘉兴劲耀光电科技有限公司 | Electric clothes hanger with fresh air purifying air |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5476365A (en) * | 1993-09-28 | 1995-12-19 | Kobayashi; Takao | Centrifugal blower wheel with forward curved multi-blades |
EP1475474A1 (en) * | 2003-05-09 | 2004-11-10 | Electrolux Home Products Corporation N.V. | Household clothes drying machine with improved fan arrangement |
EP1741934A1 (en) * | 2005-07-04 | 2007-01-10 | Behr GmbH & Co. KG | Rotor |
Family Cites Families (8)
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 |
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 |
US20050186070A1 (en) * | 2004-02-23 | 2005-08-25 | Ling-Zhong Zeng | Fan assembly and method |
DE202004012015U1 (en) * | 2004-07-31 | 2005-12-22 | Ebm-Papst Landshut Gmbh | radial impeller |
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 |
TWI299074B (en) * | 2005-11-11 | 2008-07-21 | Delta Electronics Inc | Centrifugal fan and impeller thereof |
-
2006
- 2006-02-15 IT IT000004U patent/ITPN20060004U1/en unknown
-
2007
- 2007-01-29 EP EP07711398.3A patent/EP1984553B1/en not_active Not-in-force
- 2007-01-29 CN CN2007800056611A patent/CN101384766B/en not_active Expired - Fee Related
- 2007-01-29 BR BRPI0707934-6A patent/BRPI0707934A2/en not_active IP Right Cessation
- 2007-01-29 WO PCT/EP2007/000723 patent/WO2007093274A1/en active Application Filing
- 2007-01-29 KR KR1020087021007A patent/KR20080094707A/en not_active Application Discontinuation
- 2007-01-29 US US12/279,503 patent/US20090071029A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5476365A (en) * | 1993-09-28 | 1995-12-19 | Kobayashi; Takao | Centrifugal blower wheel with forward curved multi-blades |
EP1475474A1 (en) * | 2003-05-09 | 2004-11-10 | Electrolux Home Products Corporation N.V. | Household clothes drying machine with improved fan arrangement |
EP1741934A1 (en) * | 2005-07-04 | 2007-01-10 | Behr GmbH & Co. KG | Rotor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2103730A1 (en) * | 2008-03-14 | 2009-09-23 | BSH Bosch und Siemens Hausgeräte GmbH | Exhaust air dryer with recirculation component and method for its operation |
EP2980304A4 (en) * | 2013-03-28 | 2016-09-14 | Wuxi Little Swan Co Ltd | Centrifugal fan and clothes dryer having same |
Also Published As
Publication number | Publication date |
---|---|
ITPN20060004U1 (en) | 2007-08-16 |
US20090071029A1 (en) | 2009-03-19 |
CN101384766B (en) | 2013-02-27 |
KR20080094707A (en) | 2008-10-23 |
EP1984553B1 (en) | 2013-11-20 |
BRPI0707934A2 (en) | 2011-05-17 |
EP1984553A1 (en) | 2008-10-29 |
CN101384766A (en) | 2009-03-11 |
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