EP0574296A1 - Trockner mit einer mechanischen Vorrichtung zum Steuern der Heizung - Google Patents

Trockner mit einer mechanischen Vorrichtung zum Steuern der Heizung Download PDF

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Publication number
EP0574296A1
EP0574296A1 EP93401448A EP93401448A EP0574296A1 EP 0574296 A1 EP0574296 A1 EP 0574296A1 EP 93401448 A EP93401448 A EP 93401448A EP 93401448 A EP93401448 A EP 93401448A EP 0574296 A1 EP0574296 A1 EP 0574296A1
Authority
EP
European Patent Office
Prior art keywords
turbine
heating
drum
lug
motor
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
EP93401448A
Other languages
English (en)
French (fr)
Other versions
EP0574296B1 (de
Inventor
Patrick D'ambrosio
Marc-Antoine Rabin
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.)
Compagnie Industrielle dAppareils Menagers SA CIAPEM
Original Assignee
Compagnie Industrielle dAppareils Menagers SA CIAPEM
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 Compagnie Industrielle dAppareils Menagers SA CIAPEM filed Critical Compagnie Industrielle dAppareils Menagers SA CIAPEM
Publication of EP0574296A1 publication Critical patent/EP0574296A1/de
Application granted granted Critical
Publication of EP0574296B1 publication Critical patent/EP0574296B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/08—Driving 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/36—Flow or velocity
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • 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
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers

Definitions

  • the present invention relates to a device for managing the heating in a dryer.
  • a dryer comprises a drum in which the laundry is placed, a heating element intended to raise the temperature of the air surrounding the laundry and a paddle turbine intended to ventilate the heated air towards the laundry.
  • the drum In order to brew the laundry, the drum is rotated. In order to prevent the laundry from becoming knotted, the direction of rotation of the drum is regularly reversed during the heating cycle.
  • a single motor drives both the drum and the turbine.
  • the blades of the turbine are chosen curved in order to improve the air flow, which has the advantageous consequence of reducing the drying time.
  • the heating must be switched off during the rotation of the drum in the opposite direction.
  • the heating is switched off either using the contacts of a programmer, either using relay contacts controlled by a control card. In the devices according to the prior art it is therefore necessary to provide specific electrical circuits making it possible to cut off the supply to the heating element during the heating cycle.
  • the invention does not have this drawback.
  • the subject of the present invention is a dryer comprising a drum in which the laundry is placed, said drum being driven in rotation using a drive motor, a heating element intended to raise the temperature of the surrounding air.
  • the laundry a paddle turbine intended to ventilate the heated air in the direction of the laundry, the said turbine being driven by a drive motor, and heating management means intended on the one hand to authorize the heating when the turbine turns in a first direction and on the other hand to interrupt said heating when the turbine turns in a second direction, characterized in that the heating management means consist of mechanical means and a micro-contact placed in series with the heating element, said mechanical means making it possible to control the opening and closing of said micro-contact.
  • An advantage of the invention is therefore to simplify the electrical circuits making it possible to manage the heating in a dryer.
  • FIG. 1 shows the block diagram of a dryer according to the prior art.
  • a motor 1 drives, via a belt 2, a drum 3.
  • the tension of the belt is adjusted both using the roller 4, integral with the motor 1, and using the spring 5 , also integral with the motor 1 via the lug 6.
  • the heating switch 8 closes under the action of the command C1. Management of the heating element supply is then carried out using the C2 command which acts on the reversing switch 9.
  • the reversing switch 9 When the drum is rotated in the direct direction, the reversing switch 9 is closed and the heating element 7 is supplied. When the drum is rotated in the opposite direction, the reversing switch 9 is open and the heating element 7 is no longer supplied.
  • the commands C1 and C2 come from a timer device not shown in the figure.
  • FIG. 2A shows the block diagram of a dryer according to the preferred embodiment of the invention, when the rotation of the drum is carried out in the direct direction.
  • the motor 1 is slidably mounted on its fixing rings 10.
  • the stator of the motor turns on itself in the opposite direction of rotation of the rotor (arrow A in the figure) until that a first lug 11, integral with the stator, comes into abutment in the lumen 15 of the mechanical part 16.
  • a second lug 12, also also integral with the stator, is then supported on a third lug 13 belonging to the micro-contact 14 so as to close said micro-contact. With switch 8 closed, heating is authorized.
  • FIG. 2B represents the block diagram of a dryer according to the preferred embodiment of the invention, when the rotation of the drum takes place in the opposite direction.
  • the stator of the motor 1, slidably mounted on its fixing rings 10, turns on itself in the opposite direction to the direction of rotation of the rotor at the time of the inversion.
  • the first lug 11 is then positioned in abutment in the lumen 15 of the mechanical part 16, but this time at the other end of said lumen.
  • the second lug 12 is then released from the position which allowed it to put pressure on the third lug 13.
  • the micro-contact 14 opens and heating is no longer authorized.
  • the dimensions of the light 15 are adjusted so as to ensure the proper functioning of the micro-contact 14.
  • the belt is of the "elastic" type and does not therefore require a tensioning system. It is the belt which, according to this embodiment, positions the lug 11 in abutment in the heir so that the principle of managing the heating can be achieved as described in FIGS. 2A and 2B.
  • the belt can also be tensioned using specific belt tensioning systems. These systems are known to those skilled in the art and it is therefore unnecessary to recall them here.
  • An advantage of the invention lies in that the microswitch 14 detects the direction of rotation of the turbine directly via the motor.
  • Figure 3 shows the block diagram of a dryer according to the invention in the case where the drum drive belt is broken.
  • a thermostat keeps the temperature of the drum constant when it reaches a given value.
  • the motor 1 abuts in the lumen 17 of the mechanical part 16 when the belt is broken.
  • the second lug 12 can no longer make contact with the third lug 13 and the heating is no longer authorized. It is under the action of its own weight that the motor 1 is placed in this position.
  • a spring 18 can possibly contribute to positioning the motor as described above. This spring is shown in Figure 3 but its presence is not essential.
  • the lumen 17 of the mechanical part 16 must have a clearance allowing the motor to collapse under the action of its own weight with or without the contribution of the spring 18.
  • Another advantage of the invention is therefore that there is no longer any need for a thermostat in order to prevent the drum from overheating when the belt breaks.
  • the spring 18 can also be used so that the microswitch 14 no longer authorizes heating when the engine is stopped, for example following a breakdown of the electric motor control circuit.
  • the spring 18 makes it possible in fact to pull the stator slidably mounted, so that the two pins 12 and 13 are no longer in contact.
  • the same motor drives the drum and the turbine. It is obvious that the invention can also be applied to tumble dryers whose motor which drives the drum is different from the motor which drives the turbine.
  • the turbine blades are curved in order to improve the air flow in the direct direction of rotation. It is obvious that the invention can also be applied to turbines with flat blades.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP93401448A 1992-06-12 1993-06-08 Trockner mit einer mechanischen Vorrichtung zum Steuern der Heizung Expired - Lifetime EP0574296B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9207106 1992-06-12
FR929207106A FR2692289B1 (fr) 1992-06-12 1992-06-12 Seche-linge comportant un dispositif mecanique de gestion du chauffage.

Publications (2)

Publication Number Publication Date
EP0574296A1 true EP0574296A1 (de) 1993-12-15
EP0574296B1 EP0574296B1 (de) 1997-03-05

Family

ID=9430670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401448A Expired - Lifetime EP0574296B1 (de) 1992-06-12 1993-06-08 Trockner mit einer mechanischen Vorrichtung zum Steuern der Heizung

Country Status (5)

Country Link
EP (1) EP0574296B1 (de)
AT (1) ATE149590T1 (de)
DE (1) DE69308389T2 (de)
ES (1) ES2100484T3 (de)
FR (1) FR2692289B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111218794A (zh) * 2018-11-26 2020-06-02 无锡飞翎电子有限公司 电器及负载称重方法、装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046068B4 (de) 2006-10-02 2018-06-28 Lg Electronics Inc. Vorrichtung zum Erkennen einer Riementrennung bei einem Trockner sowie Verfahren zum Erkennen dieses Vorgangs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585962A1 (de) * 1963-09-02 1969-09-25 Siemens Elektrogeraete Gmbh Nach dem Trommelprinzip arbeitende Waeschebehandlungsmaschine,insbesondere Waeschetrockner
US3623378A (en) * 1970-04-06 1971-11-30 Fedders Corp Clutching apparatus
GB2051330A (en) * 1979-06-15 1981-01-14 Philips Electronic Associated Clothes dryer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585962A1 (de) * 1963-09-02 1969-09-25 Siemens Elektrogeraete Gmbh Nach dem Trommelprinzip arbeitende Waeschebehandlungsmaschine,insbesondere Waeschetrockner
US3623378A (en) * 1970-04-06 1971-11-30 Fedders Corp Clutching apparatus
GB2051330A (en) * 1979-06-15 1981-01-14 Philips Electronic Associated Clothes dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111218794A (zh) * 2018-11-26 2020-06-02 无锡飞翎电子有限公司 电器及负载称重方法、装置
CN111218794B (zh) * 2018-11-26 2022-08-02 无锡飞翎电子有限公司 电器及负载称重方法、装置

Also Published As

Publication number Publication date
DE69308389D1 (de) 1997-04-10
ES2100484T3 (es) 1997-06-16
EP0574296B1 (de) 1997-03-05
ATE149590T1 (de) 1997-03-15
DE69308389T2 (de) 1997-06-19
FR2692289B1 (fr) 1994-07-29
FR2692289A1 (fr) 1993-12-17

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