EP1996757A2 - Waschtrockner - Google Patents

Waschtrockner

Info

Publication number
EP1996757A2
EP1996757A2 EP07726981A EP07726981A EP1996757A2 EP 1996757 A2 EP1996757 A2 EP 1996757A2 EP 07726981 A EP07726981 A EP 07726981A EP 07726981 A EP07726981 A EP 07726981A EP 1996757 A2 EP1996757 A2 EP 1996757A2
Authority
EP
European Patent Office
Prior art keywords
motor
belt
idler pulley
washer
dryer
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
EP07726981A
Other languages
English (en)
French (fr)
Other versions
EP1996757B1 (de
Inventor
Ümit CAGLIN
Murat Goktas
Gokce Kayalar
Resul Kanlikuyu
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP1996757A2 publication Critical patent/EP1996757A2/de
Application granted granted Critical
Publication of EP1996757B1 publication Critical patent/EP1996757B1/de
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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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 
    • D06F58/08—Driving arrangements

Definitions

  • the present invention relates to a washer/dryer wherein the electric motor that drives the drum is prevented from excessive heating.
  • the motors that provide the actuation of the drums can go above the temperature values designated in standards as a result of high voltage or overload.
  • the thermal protector that is used to protect the motor from overheating is energized when the predetermined temperature value is reached and stops the motor by cutting off the current delivered to the motor. Even though the motor is protected by the thermal protector from overheating, it operates under strain for a long while and the motor windings are damaged.
  • the increase in the motor temperature reduces the start up torque and increases the possibility of rotor locking and the frequent repeating of this condition results in the decrease of the motor service life.
  • the aim of the present invention is the realization of a washer/dryer wherein the electric motor that drives the drum is prevented from overheating by means of a simple device without the requirement for consuming extra energy.
  • the tightness of the belt that rotates the drum driven by an electric motor and wherein laundry is loaded is adjusted by an idler pulley so that it can function with the required tension and blades are arranged on the idler pulley that move together with the idler pulley preventing overheating of the motor by blowing air thereupon during its operation.
  • the blades that are situated on the idler pulley extend in between the frame contacting the belt and the hub, while in another embodiment they are situated on a blade support ring adjacent to the pulley and with a larger diameter such that they can sweep an area larger than the diameter of the frame that the belt contacts.
  • the overheating of the motor is prevented in a cost effective manner without consuming extra energy or materials.
  • Figure 1 - is the schematic view of the drum, the motor and the belt situated in the washer/dryer.
  • Figure 2 - is the schematic view of an idler pulley.
  • Figure 3 - is the schematic view of the drum, motor and the belt situated in the washer/dryer in another embodiment of the present invention.
  • Figure 4 - is the schematic view of an idler pulley in another embodiment of the present invention.
  • the washer/dryer (1) comprises a drum (2) wherein the laundry is loaded, a motor (3) that activates the drum (2) providing its rotation , a motor pulley (4) attached to the motor (3) shaft, a belt (5) that transmits the motor (3) drive from the motor pulley (4) to the drum (2) and an idler pulley (6) that provides to increase the tightness of the belt (5) and the friction surface of the belt (5) on the motor pulley (4) and the drum (2) by exerting pressure on the belt (5) so that the belt (5) operates with the required tightness, and when the belt (5) is moved by the motor (3), making a rotational movement by means of the friction effect between the belt (5) and itself.
  • the idler pulley (6) comprises a hub (7) that provides it to be rotatably housed on a shaft preferably situated on the motor (3) casing and a frame (8) that is in contact with the belt (5).
  • the idler pulley (6) rotates around the shaft it is housed, actuated by the belt (5) to which the frame (8) contacts and presses on, as long as the motor (3) operates.
  • the washer/dryer (1) comprises more than one blade (9) situated on the idler pulley (6), rotating together with the idler pulley (6) and preventing the overheating of the motor (3) by blowing air over the motor (3) during its rotation.
  • the blades (9) extend between the hub (7) and the frame (8) ( Figures 1-2).
  • the blades (9) also serve as a support between the hub (7) of the idler pulley (6) and its frame (8) and provide the body of the idler pulley (6) to get lighter and thus savings in materials.
  • the idler pulley (6) comprises a blade support ring (10) that surrounds the blades (9), around the same hub (7) axis and having a greater diameter than the frame (8) ( Figures 3-4).
  • the blade support ring (10) is preferably produced in a single piece with the frame (8), rotates together with the frame (8) thus increasing the area swept and the amount of air blown by the blades (9) providing a more effective cooling of the motor (3).
  • the idler pulley (6) is furthermore driven via the blade support ring (10) by means of an additional transmission element, e.g. a second belt, and serves as a reduction gear providing to decrease the speed of the motor (3) being transmitted to the drum (2).
  • the idler pulley (6) and the tightness of the belt (5) are pre-adjusted so that the belt (5) presses on the maximum amount of friction area on the motor pulley (4) and the drum (2) surface and increases the efficiency of the motion transmission.
  • the idler pulley (6) is rotatably housed from its hub (7) on a shaft.
  • the idler pulley (6) makes a rotational movement by means of the belt (5) rotated via the motor pulley (4) or another transmission element.
  • the blades (9) situated on the idler pulley (6) rotate together with the idler pulley (6) and cooling of the motor (3) is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Centrifugal Separators (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP07726981A 2006-03-17 2007-03-16 Waschtrockner Not-in-force EP1996757B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200601257 2006-03-17
PCT/EP2007/052501 WO2007107512A2 (en) 2006-03-17 2007-03-16 A washer/dryer

Publications (2)

Publication Number Publication Date
EP1996757A2 true EP1996757A2 (de) 2008-12-03
EP1996757B1 EP1996757B1 (de) 2010-01-20

Family

ID=38292656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07726981A Not-in-force EP1996757B1 (de) 2006-03-17 2007-03-16 Waschtrockner

Country Status (4)

Country Link
EP (1) EP1996757B1 (de)
AT (1) ATE455895T1 (de)
DE (1) DE602007004455D1 (de)
WO (1) WO2007107512A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2177658A1 (de) * 2008-10-14 2010-04-21 BSH Electrodomésticos España, S.A. Trommel und Waschmaschine mit einer Trommel
DE102008044285A1 (de) * 2008-12-02 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrockner mit einem Lüfter
EP3492646A1 (de) 2017-11-29 2019-06-05 Vestel Elektronik Sanayi ve Ticaret A.S. Motorkühlsystem für eine waschmaschine
KR20220114151A (ko) 2021-02-08 2022-08-17 엘지전자 주식회사 의류처리장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT215681Z2 (it) * 1988-02-04 1990-10-22 Zanussi A Spa Industrie Dispositivo di supporto e di fissaggio del motore di azionamento di una lavabiancheria a cesto.
KR920010403B1 (ko) * 1990-11-15 1992-11-27 삼성전자 주식회사 전자동 세탁기의 변속기 냉각장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007107512A2 *

Also Published As

Publication number Publication date
EP1996757B1 (de) 2010-01-20
WO2007107512A3 (en) 2007-11-15
WO2007107512A2 (en) 2007-09-27
DE602007004455D1 (de) 2010-03-11
ATE455895T1 (de) 2010-02-15

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