EP2531641B1 - Ironing device with heat recovery - Google Patents

Ironing device with heat recovery Download PDF

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Publication number
EP2531641B1
EP2531641B1 EP10792837.6A EP10792837A EP2531641B1 EP 2531641 B1 EP2531641 B1 EP 2531641B1 EP 10792837 A EP10792837 A EP 10792837A EP 2531641 B1 EP2531641 B1 EP 2531641B1
Authority
EP
European Patent Office
Prior art keywords
heat
textiles
rolls
ironing
ironing device
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.)
Active
Application number
EP10792837.6A
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German (de)
English (en)
French (fr)
Other versions
EP2531641A1 (en
Inventor
Dominique Lapauw
Yves Lapauw
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.)
Lapauw International NV
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Lapauw International NV
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Publication date
Application filed by Lapauw International NV filed Critical Lapauw International NV
Publication of EP2531641A1 publication Critical patent/EP2531641A1/en
Application granted granted Critical
Publication of EP2531641B1 publication Critical patent/EP2531641B1/en
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    • 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
    • D06F67/02—Rollers; Heating arrangements therefor
    • 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
    • D06F65/00—Ironing machines with rollers rotating against curved surfaces
    • D06F65/10—Ironing machines with rollers rotating against curved surfaces with two or more rollers co-operating with two or more curved surfaces
    • 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 invention relates to an ironing device with heat recovery means for absorbing heat emitted by one or more elements of the ironing device during the ironing process, in which at least part of the absorbed heat is emitted back to the unironed textiles upon entering the ironing device.
  • the invention furthermore relates to an ironing device with heat recovery means for at least partly absorbing heat emitted by the ironed textiles upon leaving the ironing device.
  • FIG. 1 Another example relates to the "Aircup" by the applicant, as illustrated in Fig. 1 .
  • the trough (1) of the ironing roll (2) is heated to ⁇ 180°C by means of an oil-fired gas burner (3).
  • the waste gases (4) of the gas burner are carried away to a heat exchanger (5).
  • the steam (6) which is produced by ironing moist textiles on the ironing roll is sucked from the ironing roll centrally and also carried away to the heat exchanger (5).
  • Moist air ( ⁇ 130°C) is discharged via a separate duct (7).
  • the heat exchanger (5) recovers the residual heat of the waste gases (4) ( ⁇ 240°C) and the steam (6) ( ⁇ 110°C) in order to heat the supplied fresh air (8) from ⁇ 25°C to ⁇ 80°C.
  • This heated air (9) is introduced into the ironing roll (2) as additional heat in order to further heat the textiles to be ironed.
  • the textiles to be ironed are washed, leaving a residual moisture of approximately 50%. This residual moisture has to be removed during ironing, to which end the textiles have to be heated to at least ⁇ 160°C.
  • the textiles are dry and have a temperature, when completely dry, of ⁇ 140°C to 150°C.
  • an ironing device which comprises an ironing unit for ironing textiles, in which unironed textiles are introduced at an input side and ironed textiles leave the ironing unit at an output side, and heat recovery means for at least partially absorbing and transporting heat emitted by one or more elements of the ironing device during the ironing process, in which said heat recovery means comprise a heat exchange system on the input side, adapted in order to at least partly emit the absorbed heat to the unironed textiles at the input side, characterized in that said heat recovery means comprise a heat exchange system on the output side, in which said heat exchange system on the output side is configured such that, during operation of the ironing device, it at least partly absorbs the heat which is emitted by the ironed textiles and at least partly emits the absorbed heat back to the heat exchange system on the input side.
  • the input side of the heat exchange system comprises one or more rotatably arranged rolls against which the textiles to be ironed rest and with which they are carried along, with these rolls being configured such that they at least partly emit the absorbed heat to the unironed textiles on the input side.
  • said rolls on the input side are provided, on the side opposite the side against which the textiles rest, with one or more liquid-filled chambers, with the liquid, during operation of the ironing device, at least partly absorbing the heat which is produced during the ironing process and at least partly emitting the absorbed heat back to the textiles.
  • the contact between the textiles and the rolls is optimized for maximum heat emission. This is achieved by forcing a heated liquid, steam or waste gases to travel a maximum path while being in contact with the textiles. This may be achieved, for example, by means of liquid chambers or partitions.
  • the output side of the heat exchange system comprises one or more rotatably arranged rolls against which the ironed textiles rest and with which they are carried along, with these rolls being configured such that they at least partly absorb the heat which is emitted by the ironed textiles.
  • said rolls on the output side are provided, on the side opposite the side against which the textiles rest, with one or more liquid-filled chambers, with the liquid, during operation of the ironing device, at least partly absorbing the heat which is emitted by the ironed textiles.
  • the heat recovery system comprises a removal/supply system for transporting the heat recovered during the ironing process to the input side of the ironing device.
  • Heat can be recovered in the form of liquids (e.g. water, oil) or waste gases (e.g. flue gases, steam). Heat can be recovered from the cooling roll, the ironing rolls or any element of the ironing device which emits heat.
  • the heat recovery system comprises a tube system for transporting liquids. In another embodiment, the heat recovery system comprises a flue system of discharge ducts for transporting waste gases.
  • the rolls on the output side are connected to the rolls on the input side by means of a tube system which comprises a pump system for circulating the liquid between the rolls on the output side and input side, so that the absorbed heat on the output side is at least partly emitted to the heat exchange system on the input side.
  • the tube system is preferably insulated.
  • the heat exchange systems comprise pressing means which press the textiles resting on these rolls against the latter during the rotary movement of the rolls.
  • the pressing means comprise one or more belts which are at least partly arranged around the surface of the rolls, with these belts co-rotating with these rolls during the rotary movement of the rolls and pressing the textiles against the rotating rolls.
  • the heat exchange systems on the input and output side are of an identical design.
  • the ironing device comprises one or more ironing rolls with a heated trough or heated roll for ironing the textiles, and the heat recovery means are provided in order to recover the heat which is released by this heated trough or heated roll during the ironing process.
  • the heat, at least the residual heat, of one or more heat sources in the ironing device is at least partly recovered in order to preheat the textiles by means of the heat exchanger on the input side.
  • the ironing device comprises one or more channels for transporting the heat which is produced during the ironing process, and the heat recovery means are designed to recover said heat.
  • the discharge ducts may be provided with partitions so that the waste gases are forced to travel along an optimum path enabling the maximum amount of heat to be transferred from the waste gases to the roll, as is illustrated, for example in Fig. 4 .
  • the ironing device is heated by means of gas, diesel, kerosene, electricity, oil, liquid or steam.
  • the invention furthermore provides a method for recovering heat from an ironing device for preheating textiles, the method comprising the following steps:
  • the first heat recovery means comprises one or more rolls via which the ironed textiles leave the ironing device
  • the second heat recovery means comprises one or more rolls via which the unironed textiles are introduced into the ironing device.
  • a preferred embodiment of an ironing device (20) according to the invention consists of an input side (21) for introducing the unironed textiles and an output side (22) where the ironed textiles leave the ironing unit.
  • the grey line represents the textiles (23) travelling through the ironing device (20) which, in this embodiment, comprises two ironing rolls (24a and 24b).
  • the heat exchanger On the input side (21) of the ironing device (20), there is a heat exchanger (25a) in the form of a rotatable roll (26a) against which the textiles (23) to be ironed rest and with which they are carried along, and a belt system (27a) which presses the textiles (23) against the roll (26a) along a maximum surface of the roll.
  • the heat exchange system may contain two or more rotatably arranged rolls (26a). The one or more rolls (26a) are also referred to as preheating rolls.
  • a preferably identical heat exchanger (25b) is arranged in the form of a rotatable roll (26b) against which the textiles (23) to be ironed rest and with which they are carried along, and a belt system (27b) which presses the textiles (23) against the roll (26b) along a maximum surface of the roll.
  • the one or more rolls (26b) are also referred to as cooling rolls.
  • the belt system (27b) is connected (27c) to the belt system (27a) and to the ironing rolls (24a and 24b), so that the rolls (26a and 26b) are driven by the ironing rolls (24a and 24b).
  • the belt system presses the textiles (23) against the rolls (26a and 26b) and ensures optimum transfer of heat to/from the textiles (23).
  • the belts prevent the presence of air between the textiles and the rolls (26a and 26b) and thus prevent cooling occurring during the transfer of heat.
  • the belts are preferably made from polyester/nomex.
  • the double-wall rolls (26a and 26b) are provided with several liquid-filled chambers (28a and 28b) distributed across the surface of the rolls.
  • a tube system (29a and 29b) and a pump system (30) ensure the circulation of liquid between the rolls (26a and 26b).
  • the liquid absorbs heat from the ironed textiles on the output side via the liquid-filled chambers (28b) of the roll (26b), following which the heated liquid is pumped through the tube system (29b) to the roll (26a) on the input side. There, the liquid at least partly emits its heat to the unironed textiles via the liquid-filled chambers (28a) of the roll (26a).
  • the slightly cooled liquid is then pumped back via the tube system (29a) to the roll (26b) on the output side. In this way, only a minimum amount of heat is lost in the tube system (29a and 29b).
  • the textiles (23) enter the ironing device (20) at a temperature of ⁇ 20°C.
  • the textiles are heated to ⁇ 50°C by oil which has a temperature of ⁇ 70°C on the output side and is pumped to the input side. Cooled oil of ⁇ 50°C is pumped back to the output side and can be used there to cool down the ironed textiles.
  • the textiles After leaving the ironing rolls, the textiles have a temperature of ⁇ 140°C.
  • heat exchanger (25b) on the output side heat is extracted from the textiles, which subsequently leave the roll (26b) at a temperature of ⁇ 70°C.
  • the amount of heat which can be emitted to the textiles (23) in this way on the input side (21) of the ironing device (20) is 5% of the total heat required at the input.
  • Suitable liquids preferably have good heat-conducting properties, such as for example water and thermal oil.
  • the double-wall rolls (26a and 26b) are preferably made from materials having good heat-conducting properties, such as, inter alia, copper, iron and steel. A layer of paraffin leads to good heat-conducting properties.
  • the double wall is preferably a laser-welded plate comprising a flat (thicker) outer plate and a (thinner) inner plate. In a specific embodiment, the liquid chambers are approximately 200mm wide and the roll is divided into 4 chambers.
  • Fig. 3 shows a most advantageous embodiment of an ironing device (20) according to the invention, in which the waste gasses, resulting from heating one or more ironing rolls (24b and/or 24a - not shown in the figures) and having a temperature of ⁇ 240°C, are removed via a discharge duct or flue (32) to the roll on the input side (21) in order to emit heat there for preheating the textiles.
  • the cooled waste gases are then discharged via a flue system (31). There, the temperature of the waste gases is ⁇ 100 to 120°C.
  • Fig. 4 shows an embodiment of a discharge duct for waste gases (also referred to as flue), in which the interior of the discharge duct is provided with helical partitions (41) which force the waste gases to travel an optimum path so that the heat of the waste gases is emitted to the ironing roll in an optimum manner.
  • waste gases also referred to as flue
  • the ironing device according to the invention can be used on all types of ironing machines.
  • the ironing unit may be designed as having one or more ironing rolls (24a and 24b), irrespective of the size of the ironing roll, and one or more rolls (26a and 26b).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP10792837.6A 2009-12-14 2010-12-10 Ironing device with heat recovery Active EP2531641B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2009/0788A BE1019109A5 (nl) 2009-12-14 2009-12-14 Strijkinrichting met warmterecuperatie.
PCT/EP2010/007528 WO2011072825A1 (en) 2009-12-14 2010-12-10 Ironing device with heat recovery

Publications (2)

Publication Number Publication Date
EP2531641A1 EP2531641A1 (en) 2012-12-12
EP2531641B1 true EP2531641B1 (en) 2015-02-11

Family

ID=42235643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10792837.6A Active EP2531641B1 (en) 2009-12-14 2010-12-10 Ironing device with heat recovery

Country Status (5)

Country Link
EP (1) EP2531641B1 (es)
BE (1) BE1019109A5 (es)
DK (1) DK2531641T3 (es)
ES (1) ES2533347T3 (es)
WO (1) WO2011072825A1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1028588B1 (nl) * 2021-03-03 2022-03-29 Laco Machinery N V Strijkinrichting met energie recuperatie
BE1028589B1 (nl) * 2021-04-01 2022-03-29 Laco Machinery N V Strijkinrichting met gasgestookte warmtebron en elektrische warmtebron

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2980490B1 (fr) * 2011-09-26 2013-09-27 Elis Systeme comportant une calandre de repassage d'un linge et procede associe
CN103911839A (zh) * 2014-03-26 2014-07-09 上海金星拉链有限公司 三桥熨平烫带机
CN105506942A (zh) * 2015-11-30 2016-04-20 李家海 节能工业烫平机
DE102016004403A1 (de) * 2016-04-14 2017-10-19 Herbert Kannegiesser Gmbh Verfahren zum Mangeln von Wäschestücken und Mangelstraße

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE468074C (de) * 1928-11-06 Heinz Andrich Waeschemuldenmangel
DE3128520A1 (de) * 1980-02-19 1983-02-03 Herbert Kannegiesser Gmbh + Co, 4973 Vlotho Mangel zum glaetten feuchter waeschestuecke
DD206310A3 (de) * 1981-07-20 1984-01-18 Guenther Thurner Heissmuldenmangel
US6760984B1 (en) * 2000-06-30 2004-07-13 Tokyo Sensen Kikai Seinsaskusho, Co., Ltd. Roll finishing method and roll finishing machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1028588B1 (nl) * 2021-03-03 2022-03-29 Laco Machinery N V Strijkinrichting met energie recuperatie
EP4053327A3 (en) * 2021-03-03 2022-10-05 Laco Machinery NV Ironing device with energy recuperation
BE1028589B1 (nl) * 2021-04-01 2022-03-29 Laco Machinery N V Strijkinrichting met gasgestookte warmtebron en elektrische warmtebron
EP4067561A1 (en) * 2021-04-01 2022-10-05 Laco Machinery NV Ironing equipment with gas-fired heat source and electric heat source

Also Published As

Publication number Publication date
BE1019109A5 (nl) 2012-03-06
ES2533347T3 (es) 2015-04-09
WO2011072825A1 (en) 2011-06-23
DK2531641T3 (en) 2015-03-23
EP2531641A1 (en) 2012-12-12

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