EP2531641A1 - Ironing device with heat recovery - Google Patents
Ironing device with heat recoveryInfo
- Publication number
- EP2531641A1 EP2531641A1 EP10792837A EP10792837A EP2531641A1 EP 2531641 A1 EP2531641 A1 EP 2531641A1 EP 10792837 A EP10792837 A EP 10792837A EP 10792837 A EP10792837 A EP 10792837A EP 2531641 A1 EP2531641 A1 EP 2531641A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- textiles
- ironing
- rolls
- 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.)
- Granted
Links
- 238000010409 ironing Methods 0.000 title claims abstract description 123
- 238000011084 recovery Methods 0.000 title claims abstract description 33
- 239000004753 textile Substances 0.000 claims abstract description 90
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 5
- 230000000284 resting effect Effects 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- -1 diesel Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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.
- GB2102842A, DE468074 and DE 3128520A1 describe ironing devices in which heat from one or more ironing rolls is conducted to the ironing roll itself or to a pre- drying 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 fact that part of the recovered heat is lost in the form of moist air of ⁇ 130°C via the discharge duct (7) is a drawback in this case.
- 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 (20) which comprises an ironing unit for ironing textiles (23), in which unironed textiles are introduced at an input side (21) and ironed textiles leave the ironing unit at an output side (22), and one or more heat recovery means (25b, 24b, 30, 32) for at least partially absorbing and transporting heat emitted by one or more elements (25b, 24b, 24a) of the ironing device (20) during the ironing process, in which one or more heat recovery means (25a) are adapted in order to at least partly emit the absorbed heat to the unironed textiles at the input side (21), characterized in that said one or more heat recovery means (25a and 25b) comprise a heat exchange system (25b) on the output side (22), in which said heat exchange system (25b) is configured such that, during operation of the ironing device, it at least partly absorbs the heat which is emitted by the ironed textiles (23) and at least partly emits the absorbed heat back to the
- This object of the invention is furthermore achieved by providing that one or more heat recovery means comprise a heat exchange system (25a) on the input side (21), in which this heat exchange system (25a) is designed such that the absorbed heat is at least partly emitted to the unironed textiles on the input side (21).
- the input side (21) of the heat exchange system (25a) comprises one or more rotatably arranged rolls (26a) against which the textiles (23) 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 (23) on the input side (21).
- said rolls (26a) are provided, on the side opposite the side against which the textiles (23) rest, with one or more liquid-filled chambers (28a), 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 (23).
- 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 (22) of the heat exchange system comprises one or more rotatably arranged rolls (26b) against which the ironed textiles (23) rest and with which they are carried along, with these rolls (26b) being configured such that they at least partly absorb the heat which is emitted by the ironed textiles (23).
- said rolls (26b) are provided, on the side opposite the side against which the textiles (23) 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 (23).
- 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 (26b), the ironing rolls (24b and 24a) or any element of the ironing device which emits heat.
- the heat recovery system comprises a tube system for transporting liquids.
- the heat recovery system comprises a flue system of discharge ducts for transporting waste gases.
- the rolls (26b) on the output side are connected to the rolls (26a) on the input side by means of a tube system (29a and 29b) which comprises a pump system (30) for circulating the liquid between the rolls (26a and 26b) on the output side (22) and input side (21), so that the absorbed heat on the output side (22) is at least partly emitted to the heat exchange system (25a) on the input side (21).
- the tube system is preferably insulated.
- the heat exchange systems (25a and 25b) comprise pressing means (27a, 27b and 27c) which press the textiles (23) resting on these rolls against the latter during the rotary movement of the rolls (26a and 26b).
- the pressing means comprise one or more belts (27a, 27b and 27c) which are at least partly arranged around the surface of the rolls (26a and 26b), with these belts co- rotating with these rolls during the rotary movement of the rolls and pressing the textiles (23) against the rotating rolls.
- the heat exchange systems (25a and 25b) on the input and output side are of an identical design.
- the ironing device (20) comprises one or more ironing rolls (2, 24a and 24b) with a heated trough or heated roll (1) for ironing the textiles (23), and the heat recovery means (5, 25a and 25b) 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 (20) comprises one or more discharge ducts (29b, 32) for removing the heat which is produced during the ironing process, and the heat recovery means (25a, 25b, 24a, 24b) are designed to recover said heat.
- the discharge ducts (32) 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 (20) for preheating textiles (23), the method comprising the following steps: at least partly recovering heat from the ironed textiles on the output side (26b) of the ironing device via first heat recovery means (25b),
- the first heat recovery means (25b) comprises one or more rolls (26b) via which the ironed textiles leave the ironing device
- the second heat recovery means (25a) comprises one or more rolls (26a) via which the unironed textiles are introduced into the ironing device.
- the method furthermore comprises the following steps: at least partly recovering negative heat (cooling) from the unironed textiles on the input side (21) via said second heat recovery means (25a),
- the heat recovery means of the invention in an alternative embodiment, could therefore not only be used for heating the unironed textiles on the input side, but also for cooling the ironed textiles on the output side.
- Fig. 1 shows an existing heat recovery process of an ironing device.
- Fig. 2 shows an embodiment of an ironing device according to the invention.
- Fig. 3 shows another embodiment of an ironing device according to the invention.
- Fig. 4 shows an embodiment of a discharge duct (flue) with helical distribution of the waste gases. Mode(s) for carrying out the invention
- 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).
- 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.
- 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.
- 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2009/0788A BE1019109A5 (en) | 2009-12-14 | 2009-12-14 | IRONING SYSTEM WITH HEAT RECUPERATION. |
PCT/EP2010/007528 WO2011072825A1 (en) | 2009-12-14 | 2010-12-10 | Ironing device with heat recovery |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2531641A1 true EP2531641A1 (en) | 2012-12-12 |
EP2531641B1 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 (en) |
BE (1) | BE1019109A5 (en) |
DK (1) | DK2531641T3 (en) |
ES (1) | ES2533347T3 (en) |
WO (1) | WO2011072825A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2980490B1 (en) * | 2011-09-26 | 2013-09-27 | Elis | SYSTEM COMPRISING A LINER IRONING CALANDER AND ASSOCIATED METHOD |
CN103911839A (en) * | 2014-03-26 | 2014-07-09 | 上海金星拉链有限公司 | Three-bridge tape ironing machine |
CN105506942A (en) * | 2015-11-30 | 2016-04-20 | 李家海 | Energy-saving industrial ironing machine |
DE102016004403A1 (en) * | 2016-04-14 | 2017-10-19 | Herbert Kannegiesser Gmbh | Method for mangling laundry items and shortage line |
BE1028588B1 (en) * | 2021-03-03 | 2022-03-29 | Laco Machinery N V | IRONING DEVICE WITH ENERGY RECOVERY |
BE1028589B1 (en) * | 2021-04-01 | 2022-03-29 | Laco Machinery N V | IRONING DEVICE WITH GAS-FIRED HEAT SOURCE AND ELECTRIC HEAT SOURCE |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE468074C (en) * | 1928-11-06 | Heinz Andrich | Lack of laundry trays | |
DE3128520A1 (en) * | 1980-02-19 | 1983-02-03 | Herbert Kannegiesser Gmbh + Co, 4973 Vlotho | Mangle for the smoothing of damp laundry articles |
DD206310A3 (en) * | 1981-07-20 | 1984-01-18 | Guenther Thurner | HOT BODY SHORTAGE |
WO2002002858A1 (en) * | 2000-06-30 | 2002-01-10 | Tokyo Sensen Kikai Seisakusho Co., Ltd. | Roll finishing method and roll finishing machine |
-
2009
- 2009-12-14 BE BE2009/0788A patent/BE1019109A5/en not_active IP Right Cessation
-
2010
- 2010-12-10 ES ES10792837.6T patent/ES2533347T3/en active Active
- 2010-12-10 EP EP10792837.6A patent/EP2531641B1/en active Active
- 2010-12-10 WO PCT/EP2010/007528 patent/WO2011072825A1/en active Application Filing
- 2010-12-10 DK DK10792837T patent/DK2531641T3/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2011072825A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2533347T3 (en) | 2015-04-09 |
BE1019109A5 (en) | 2012-03-06 |
WO2011072825A1 (en) | 2011-06-23 |
DK2531641T3 (en) | 2015-03-23 |
EP2531641B1 (en) | 2015-02-11 |
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