EP1096053A1 - Trocknungs- und Bügelmaschine mit einer Temperatur- und feuchtigkeitsabhängigen Regelungsvorrichtung - Google Patents

Trocknungs- und Bügelmaschine mit einer Temperatur- und feuchtigkeitsabhängigen Regelungsvorrichtung Download PDF

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Publication number
EP1096053A1
EP1096053A1 EP00402748A EP00402748A EP1096053A1 EP 1096053 A1 EP1096053 A1 EP 1096053A1 EP 00402748 A EP00402748 A EP 00402748A EP 00402748 A EP00402748 A EP 00402748A EP 1096053 A1 EP1096053 A1 EP 1096053A1
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EP
European Patent Office
Prior art keywords
laundry
value
relative humidity
humidity
temperature
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
EP00402748A
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English (en)
French (fr)
Other versions
EP1096053B1 (de
Inventor
Bernard Jomard
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.)
Danube Intenational SAS
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Danube Intenational SAS
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Publication date
Application filed by Danube Intenational SAS filed Critical Danube Intenational SAS
Publication of EP1096053A1 publication Critical patent/EP1096053A1/de
Application granted granted Critical
Publication of EP1096053B1 publication Critical patent/EP1096053B1/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
    • D06F67/00—Details of ironing machines provided for in groups D06F61/00, D06F63/00, or D06F65/00

Definitions

  • the present invention relates to a device for improving significantly the performance of laundry drying and ironing machines known as dryer-ironers.
  • the invention relates to also ironer-dryers equipped with the devices according to the invention.
  • the invention will also find applications in the field dryer-ironers with a laundry folding function; in to a certain extent, the invention may apply to washing machines with a laundry drying function.
  • Ironing dryers are widely used in laundries, especially in communities (hotels, hospitals, homes stop ).
  • dryer-ironers operate through a main roller or a plurality of main rollers, on which the laundry rolls up.
  • These machines also include a roller or back pressure pad, arranged so that the laundry is compressed between a roller main and the roller or back pressure pad.
  • the roller (s) main ones are provided with a heater, which can be either electric, either by combustion of gas or by circulation of vapor.
  • Tapes conveyors are used to drag the laundry to the active part of the machine. Drying and ironing are achieved by the combined action of temperature and pressure to which the laundry items are subjected.
  • the object of the present invention is therefore to overcome the drawbacks of the prior art by proposing dryer-ironers making it possible to confer constant and homogeneous residual humidity on all parts of treated linen, and having better energy efficiency.
  • Another object of the invention is to propose a device for regulating temperature and humidity function to provide humidity constant and homogeneous residual on all the pieces of linen treated, and having better energy efficiency.
  • the main difficulty in drying and ironing laundry items stems from the fact that the pieces of laundry introduced into the ironer-dryers have a texture, thickness and degree of humidity which may vary widely. Furthermore, the premises in which are placed the ironers can also be present various temperature and humidity conditions. In consequence, to obtain a linen in a satisfactory state after leaving dryer-ironers, the invention proposes to regulate automatically the different operating parameters during processing. This action regulation must occur not only at the stage of each change of part, but still during the processing of a given part. Indeed, a sheet may have a wetter part than another.
  • the operating parameters used for optimize drying and ironing are as follows: the temperature of the main cylinders, the value of the back pressure applied to the part the speed of the laundry parts in the dryer-ironer according to the invention.
  • the description of the dryer-ironer according to the invention goes to now be described with reference to Figure 1.
  • the dryer-ironer according to the invention comprises in known manner, at least one cylinder (10 to 12), said main, heating and rotary.
  • the cylinder (10) located further downstream, hereinafter called the last main cylinder, is driven in rotation, for example by a belt (21) meshing, on the one hand on the axis of rotation of the last main cylinder (10), via, for example a pulley, and the other on the output axis of a motor (20).
  • the motor (20) therefore allows the conveying of laundry items (1).
  • the dryer-ironer also comprises in known manner back pressure means (30).
  • These back pressure means (30) comprise, for example, a cylinder (30) which presses the piece of laundry (1) against the last main cylinder (10).
  • the path for conveying the laundry pieces (1) is formed, by example, endless bands which wind successively each of the main cylinders (10 to 12) over at least a portion of the circumference and a guide means (13) for the pieces (1) of linen.
  • Each endless strip is driven by friction by the last main cylinder (10) at a speed corresponding to the speed of rotation of the motor (20).
  • Each endless strip is held taut on the main cylinders (10 to 12) by the cylinders (14, 15) of return at least one of which is mounted on elastic means. It is possible to provide other means to guide the laundry items so that these follow the conveying path.
  • the dryer-ironer comprises means (60) for measuring the temperature and relative humidity of the atmosphere prevailing in the vicinity and downstream of the last main cylinder (10). These means (60) of measurement are connected to means (50) of control. These means (50) control, on the one hand process the information provided by the measuring means (60) for determining the absolute humidity rate (Ha) at from the humid air diagram shown in Figure 2, and secondly possibly modify according to this determination, the setting of the minus two of the following operating parameters, the temperature of the or main cylinders, the value of the back pressure applied to the part of laundry, and the speed of the laundry items in the dryer-ironer, to get the desired relative humidity. Information representative of the humidity and the measured temperature is treated with so that the couple relative humidity, measured temperature can be analyzed as representative of the absolute humidity characterizing the atmosphere cleared by the passage of damp linen over the heated cylinders.
  • the control means (50) are connected, via appropriate control links (53 to 55), at least two of the three following elements to be able to control them: namely the device (100) for heating of the last cylinder (10), the back pressure means, and the engine (20) for rotating the last cylinder (10).
  • the regulation of back pressure value will be achieved by action on a mechanical device or hydraulic.
  • the regulation of the speed of movement of the pieces of laundry in the machine will result from the action on the drive motor (20) and / or the control electronics of this motor (20).
  • control means (50) modify the setting of the parameters cited below by modifying the operation of the device (100) heating the last cylinder (10), and / or the back-pressure means, and / or the motor (20) for rotating the last cylinder (10), to that the value of the absolute humidity is close to 100% and chosen between 95 and 99%.
  • This modification is made according to the humidity level absolute determined from relative humidity and measured temperature.
  • the rate humidity measured by the measuring means (60) may be below 100% since the sheet is loaded with moisture and this, taking into account unsuitable previous settings, will not be completely extracted. Through Therefore, the operating parameters must be changed to obtain a relative humidity close to 100%.
  • the means (50) values determine the value of the absolute humidity level using the values measured relative humidity and temperature, and change automatically the operating parameters, for example, in the case of the sheet, by increasing the temperature of the last main cylinder (10), and / or decreasing the speed of the drive motor (20), and / or is increasing the pressure exerted by the back pressure means (30).
  • the relative humidity rate will decrease since there is less water to evaporate.
  • the absolute humidity is again determined by the control means as a function of the temperature and relative humidity measured, for example, to decrease the temperature of the last main cylinder (10) and / or increase the speed of the motor (20) and / or reduce the pressure exerted by the counter means (30) pressure.
  • control means (50) comprise means comparison, consisting for example of a comparator circuit, for compare the operating parameters with limit values, set by example, by the user. If, when calculating the new parameters of one of the parameters is greater than the determined limit value for this parameter, then the set of parameters is recalculated by the control means by setting the value of this parameter to its value maximum allowed.
  • the means (60) for measuring relative humidity and temperature include, for example, means (61, 62) for capturing the atmosphere in the immediate vicinity of the piece of laundry treated downstream of the last cylinder (10) main.
  • the measurement means (60) carry out either the integration or the average of the values relative humidity and temperature over the entire useful length main roller (s).
  • a plurality of means (61, 62) can be arranged along a straight line parallel to the axis longitudinal of the last main cylinder (10). Contrary to what has been proposed in previously known embodiments, it is not desirable place sensors near the main cylinder (s) or even level of the extraction circuit.
  • the cylinder being brought to high temperature (of the order of 60 to 80 ° c) its radiation will disturb inevitably the sensors.
  • the scrolling of the laundry can be cause of the deterioration of these sensitive elements, especially since it is frequent to observe phenomena of accumulation of textile flocks in cylinder outlet.
  • the collection means can consist of at least one tube (61), for example of small diameter, one end of which is placed at immediate proximity to the outlet of the last of the main rollers and above of the laundry.
  • the other end of each tube communicates with an enclosure (62).
  • This enclosure (62) includes a fan (63) extraction, so as to aspirate the atmosphere present at the outlet of the last main cylinder (10) through the tube (s).
  • the interior of this enclosure (62) comprises at least one humidity sensor (64) and at least one sensor (65) of temperature.
  • the values of the couple ⁇ humidity, temperature ⁇ , characteristics of the atmosphere at the outlet of the last main cylinder are transmitted by through appropriate links (51), to the control means (50) which analyze, for example by means of an appropriate electronic circuit. This information is used to regulate in real time at least two of the three parameters mentioned above and as described above.
  • the outer surface of this cylinder is coated with a layer thermally insulating.
  • This insulating layer is itself covered by a heating film or fabric controlled by the control means (50), by through an appropriate link. So the disadvantages of inertia thermal mechanical cylinders are avoided and a simplification of maintenance operations.
  • the dryer-ironer comprising at least one cylinder main (10 to 12) rotary for heating the laundry to be dried, means (30) to exert a back pressure, and means (20) for driving means of conveying the linen in the dryer-ironer
  • the dryer-ironer also includes means (60) for measurement of the absolute rate of water vapor at the outlet of the last main cylinder (10), the means (60) of determination being connected to means (50) of control allowing to vary, at least two among the three parameters of following operation, the temperature of the last main cylinder (10), the force exerted by the back pressure means (30), the speed of the means (20) drive means for conveying the laundry, depending on the value of relative humidity and temperature measured by means (60) of measurement.
  • the measuring means (60) comprise means (61, 62) for capturing the atmosphere in the vicinity of the last main cylinder (10) for bringing the atmosphere to an enclosure (62) provided at least one extractor fan (63), the enclosure (62) comprising at least a humidity sensor (64) and at least one temperature sensor (65).
  • the capture means (61, 62) are constituted by at least one tube (61) of small diameter, one of the ends is placed in the immediate vicinity of the outlet of the last cylinder (10) main, and the other end of which is placed in the enclosure (62).
  • the outer surface of the cylinders (10) is coated with an insulating layer, which insulating layer is itself covered with a heating film or cloth.
  • the two operating parameters modified are chosen from the following three operating parameters; the temperature of the last main cylinder, the running speed of the workpiece laundry, the pressure exerted by back pressure means on the workpiece laundry.
  • the modification is carried out according to of the absolute humidity value determined from the measured values of the relative humidity and temperature.
  • the modification step is implemented when the relative humidity value is not between 95 and 99%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)
EP00402748A 1999-10-05 2000-10-05 Trocknungs- und Bügelmaschine mit einer Temperatur- und feuchtigkeitsabhängigen Regelungsvorrichtung Expired - Lifetime EP1096053B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9912395 1999-10-05
FR9912395A FR2800398B1 (fr) 1999-10-05 1999-10-05 Secheuse-repasseuse equipee d'un dispositif de regulation en fonction de la temperature et de l'humidite

Publications (2)

Publication Number Publication Date
EP1096053A1 true EP1096053A1 (de) 2001-05-02
EP1096053B1 EP1096053B1 (de) 2004-12-29

Family

ID=9550578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00402748A Expired - Lifetime EP1096053B1 (de) 1999-10-05 2000-10-05 Trocknungs- und Bügelmaschine mit einer Temperatur- und feuchtigkeitsabhängigen Regelungsvorrichtung

Country Status (4)

Country Link
EP (1) EP1096053B1 (de)
AT (1) ATE286166T1 (de)
DE (1) DE60017057D1 (de)
FR (1) FR2800398B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1306481A1 (de) * 2001-10-25 2003-05-02 Electrolux Systèmes de Blanchisserie Verfahren zum Regulieren der Feuchtigkeit von Wäsche , beim Verlassen einer Trocknungs- und Bügelmaschine und Maschine zur Verwendung dieses Verfahrens
EP1403417A1 (de) * 2002-09-26 2004-03-31 Primus N.V. Bügelmaschine und Verfahren
EP2871281B1 (de) * 2013-11-07 2017-01-25 Danube International Vorrichtung zum Trocknen und Bügeln von Textilien

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2219895A1 (de) * 1972-04-19 1973-10-31 Grosswaescherei Robert Raatz I Ueberwachungs-und steuervorrichtung fuer waeschemangelmaschinen
DE8029177U1 (de) * 1980-11-03 1983-03-31 Herbert Kannegiesser Gmbh + Co, 4973 Vlotho Vorrichtung zum glaetten feuchter waeschestuecke
DE3436553A1 (de) * 1984-10-05 1986-04-10 Elasto-Press Schmitz GmbH, 3250 Hameln Waeschemangel
DE3826525A1 (de) * 1988-08-04 1990-02-08 Transferon Waeschereimasch Waeschemangel
EP0528745A2 (de) * 1991-07-23 1993-02-24 Girbau, S.A. Bügelmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2219895A1 (de) * 1972-04-19 1973-10-31 Grosswaescherei Robert Raatz I Ueberwachungs-und steuervorrichtung fuer waeschemangelmaschinen
DE8029177U1 (de) * 1980-11-03 1983-03-31 Herbert Kannegiesser Gmbh + Co, 4973 Vlotho Vorrichtung zum glaetten feuchter waeschestuecke
DE3436553A1 (de) * 1984-10-05 1986-04-10 Elasto-Press Schmitz GmbH, 3250 Hameln Waeschemangel
DE3826525A1 (de) * 1988-08-04 1990-02-08 Transferon Waeschereimasch Waeschemangel
EP0528745A2 (de) * 1991-07-23 1993-02-24 Girbau, S.A. Bügelmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1306481A1 (de) * 2001-10-25 2003-05-02 Electrolux Systèmes de Blanchisserie Verfahren zum Regulieren der Feuchtigkeit von Wäsche , beim Verlassen einer Trocknungs- und Bügelmaschine und Maschine zur Verwendung dieses Verfahrens
FR2831562A1 (fr) * 2001-10-25 2003-05-02 Electrolux Syst Blanchisserie Procede de controle du taux d'humidite du linge sortant d'une secheuse repasseuse et secheuse repasseuse mettant en oeuvre ce procede
US6889453B2 (en) 2001-10-25 2005-05-10 Electrolux Systems De Blanchinsserie Method for controlling the moisture content of linen leaving a drying ironer and drying-ironer implementing this method
EP1403417A1 (de) * 2002-09-26 2004-03-31 Primus N.V. Bügelmaschine und Verfahren
WO2004029352A1 (en) * 2002-09-26 2004-04-08 Primus N.V. Ironing machines and methods
EP2871281B1 (de) * 2013-11-07 2017-01-25 Danube International Vorrichtung zum Trocknen und Bügeln von Textilien

Also Published As

Publication number Publication date
EP1096053B1 (de) 2004-12-29
FR2800398B1 (fr) 2002-03-08
FR2800398A1 (fr) 2001-05-04
DE60017057D1 (de) 2005-02-03
ATE286166T1 (de) 2005-01-15

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