WO2007107512A2 - A washer/dryer - Google Patents

A washer/dryer Download PDF

Info

Publication number
WO2007107512A2
WO2007107512A2 PCT/EP2007/052501 EP2007052501W WO2007107512A2 WO 2007107512 A2 WO2007107512 A2 WO 2007107512A2 EP 2007052501 W EP2007052501 W EP 2007052501W WO 2007107512 A2 WO2007107512 A2 WO 2007107512A2
Authority
WO
WIPO (PCT)
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.)
Ceased
Application number
PCT/EP2007/052501
Other languages
French (fr)
Other versions
WO2007107512A3 (en
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
Priority to EP07726981A priority Critical patent/EP1996757B1/en
Priority to AT07726981T priority patent/ATE455895T1/en
Priority to DE602007004455T priority patent/DE602007004455D1/en
Publication of WO2007107512A2 publication Critical patent/WO2007107512A2/en
Publication of WO2007107512A3 publication Critical patent/WO2007107512A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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)

Abstract

The present invention relates to a washer/dryer (1) wherein its drum (2) is rotated by means of a belt (5) driven via the electric motor (3) and overheating is prevented by blowing air over the electric motor (3) by making use of the movement of the idler pulley (6) pressing on the belt (5).

Description

Description A WASHER/DRYER
[0001] The present invention relates to a washer/dryer wherein the electric motor that drives the drum is prevented from excessive heating.
[0002] In washer/dryers, 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.
[0003] In the United States of America patent document no. US5187954, in a washing machine the motor movement is transmitted to the tub by means of a motor pulley and a belt, and blades are provided on the pulley connected to the motor shaft for cooling the motor.
[0004] In the Japanese patent document no. US 5187954, the explanation is given for a cooling fan attached to the motor shaft and coupled by a one-way clutch.
[0005] In the Japanese patent document no. JP3215295, the motor cooling fan is directly mounted on the motor axle.
[0006] In the European patent document no. EP 1209277, in a heat-pump clothes drying machine, the motor that drives the drum is also connected to a first fan which circulates the drying air that cools the compressor.
[0007] 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.
[0008] The washer/dryer realized in order to attain the aim of the present invention is explicated in the attached claims.
[0009] In the washer/dryer, 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. [0010] In an embodiment of the present invention, 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.
[0011] By means of the embodiment of the present invention, the overheating of the motor is prevented in a cost effective manner without consuming extra energy or materials.
[0012] The washer/dryer realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
[0013] Figure 1 - is the schematic view of the drum, the motor and the belt situated in the washer/dryer.
[0014] Figure 2 - is the schematic view of an idler pulley.
[0015] 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.
[0016] Figure 4 - is the schematic view of an idler pulley in another embodiment of the present invention.
[0017] The elements illustrated in the figures are numbered as follows:
[0018] 1. Washer/dryer
[0019] 2. Drum
[0020] 3. Motor
[0021] 4. Motor pulley
[0022] 5. Belt
[0023] 6. Idler pulley
[0024] 7. Hub
[0025] 8. Frame
[0026] 9. Blade
[0027] 10. Blade support ring
[0028] 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. [0029] 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.
[0030] 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.
[0031] In an embodiment of the present invention, the blades (9) extend between the hub (7) and the frame (8) (Figures 1-2).
[0032] In this embodiment, 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.
[0033] In another embodiment of the present invention, 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).
[0034] In this embodiment, 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). In this embodiment, 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).
[0035] In the washer/dryer (1), before the motor (3) starts operating, 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. When the motor (3) operates, 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.
[0036] By means of the embodiment of the present invention, air is blown on the motor (3) and overheating is prevented by forming blades (9) on the existing idler pulley (6) that serves to tighten the belt (5) without constructing an additional mechanism and requiring (extra) energy consumption.

Claims

Claims
[0001] A washer/dryer (1) comprising 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) by exerting pressure on the belt (5) and characterized by 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.
[0002] A washer/dryer (1) as in Claim 1, characterized by an idler pulley (6) comprising a hub (7) for housing it and a frame (8) that contacts the belt (5) and blades (9) that extend between the hub (7) and the frame (8).
[0003] A washer/dryer (1) as in Claim 1, characterized by an idler pulley (6) comprising hub (7) for housing it, a frame (8) that contacts the belt (5) and a blade support ring (10) that surrounds the blades (9), on the same hub (7) axis and with a greater diameter than the frame (8).
PCT/EP2007/052501 2006-03-17 2007-03-16 A washer/dryer Ceased WO2007107512A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07726981A EP1996757B1 (en) 2006-03-17 2007-03-16 A washer/dryer
AT07726981T ATE455895T1 (en) 2006-03-17 2007-03-16 WASHER DRYER
DE602007004455T DE602007004455D1 (en) 2006-03-17 2007-03-16 WASHER DRYER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200601257 2006-03-17
TRTR2006/01257 2006-03-17

Publications (2)

Publication Number Publication Date
WO2007107512A2 true WO2007107512A2 (en) 2007-09-27
WO2007107512A3 WO2007107512A3 (en) 2007-11-15

Family

ID=38292656

Family Applications (1)

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

Country Status (4)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2177658A1 (en) * 2008-10-14 2010-04-21 BSH Electrodomésticos España, S.A. Pulley and washing machine with a pulley
DE102008044285A1 (en) * 2008-12-02 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Clothes dryer has clothes drum, which is rotated at drive belt by motor, where process air circuit has blower for supplying process air in process air circuit
EP4039871A1 (en) * 2021-02-08 2022-08-10 LG Electronics Inc. Laundry treating apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3492646A1 (en) 2017-11-29 2019-06-05 Vestel Elektronik Sanayi ve Ticaret A.S. Motor cooling system for a washing machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT215681Z2 (en) * 1988-02-04 1990-10-22 Zanussi A Spa Industrie SUPPORT AND FIXING DEVICE FOR THE DRIVE MOTOR OF A BASKET WASHING MACHINE.
KR920010403B1 (en) * 1990-11-15 1992-11-27 삼성전자 주식회사 Gearbox Chiller of Fully Automatic Washing Machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2177658A1 (en) * 2008-10-14 2010-04-21 BSH Electrodomésticos España, S.A. Pulley and washing machine with a pulley
DE102008044285A1 (en) * 2008-12-02 2010-06-10 BSH Bosch und Siemens Hausgeräte GmbH Clothes dryer has clothes drum, which is rotated at drive belt by motor, where process air circuit has blower for supplying process air in process air circuit
EP4039871A1 (en) * 2021-02-08 2022-08-10 LG Electronics Inc. Laundry treating apparatus
US11866872B2 (en) 2021-02-08 2024-01-09 Lg Electronics Inc. Laundry treating apparatus

Also Published As

Publication number Publication date
ATE455895T1 (en) 2010-02-15
WO2007107512A3 (en) 2007-11-15
EP1996757B1 (en) 2010-01-20
DE602007004455D1 (en) 2010-03-11
EP1996757A2 (en) 2008-12-03

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