EP1002152A1 - Ironing machine with heating cylinder and circulation of air - Google Patents
Ironing machine with heating cylinder and circulation of airInfo
- Publication number
- EP1002152A1 EP1002152A1 EP97931887A EP97931887A EP1002152A1 EP 1002152 A1 EP1002152 A1 EP 1002152A1 EP 97931887 A EP97931887 A EP 97931887A EP 97931887 A EP97931887 A EP 97931887A EP 1002152 A1 EP1002152 A1 EP 1002152A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- machine according
- space
- tube
- ironing
- 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
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
Definitions
- the invention relates to an ironing machine comprising a rotary ironing cylinder, a fixed tube arranged coaxially inside the cylinder, heating means interposed between the cylinder and the tube, as well as means ensuring air circulation, in a closed circuit, inside the cylinder.
- the ironing machine according to the invention can be used in all cases where relatively large quantities of flat linen such as sheets, tablecloths, towels, etc. must be ironed frequently.
- flat linen such as sheets, tablecloths, towels, etc.
- the ironing cloth is introduced between the cylinder and endless bands applied against the cylinder over most of its circumference.
- the endless bands are driven in a forward movement which has the effect of driving the ironing cylinder in rotation. Ironing is ensured by compressing the laundry between the cylinder and the endless belts and by heating the cylinder.
- the length of the ironing cylinder defines the width maximum of ironed laundry items.
- the widest parts which are ironed always have a width substantially less than this maximum width. This means that, for a given piece of laundry, only part of the cylinder is in contact with this piece when it is ironed. Since the ironing cylinder is usually heated uniformly over its entire length, the region of the cylinder not used when ironing a piece of laundry tends to heat up relative to the region which was used for ironing.
- the invention relates specifically to an ironing machine equipped, inside the ironing cylinder, with air circulation means whose cost is comparable to that of the air circulation means equipping the machine described in document FR-A-2 698 388, but whose design allows heat to be transferred to the place where it is used.
- an ironing machine comprising a rotary ironing cylinder, a fixed tube arranged coaxially inside the cylinder, heating means housed in an intermediate space between the cylinder. and the tube, and air circulation means, ensuring air circulation, in a closed circuit, inside the cylinder, characterized in that the air circulation means are arranged to suck in air air in two end regions of said space and for discharging it into a central region of said space.
- the air circulation means equipping the ironing machine according to the invention take the heat where it is in excess to restore it where it is lacking.
- the temperature of the ironing cylinder is thus made relatively uniform over its entire length, whatever the manner introduce the laundry items into the machine. Any risk of accidental burning due to the existence of a hot spot on the ironing cylinder is thus avoided, without the need to resort to an expensive technique.
- the air circulation means comprise two series of suction openings formed in the fixed tube, opposite the two end regions of said space, discharge openings formed in the fixed tube, opposite the central region of the space, and ventilation means placed inside the fixed tube, between each series of suction openings and the discharge openings.
- the fixed tube internally delimits two distinct zones separated by a central partition substantially perpendicular to the axis of the tube.
- Each of these zones then houses one of the ventilation means and opens into the intermediate space through one of the series of suction openings and through a series of discharge openings.
- the heating means are electrical resistors oriented substantially along the axis of the tube.
- the suction and discharge openings are then formed in the fixed tube substantially opposite these resistances.
- the suction and discharge openings may include tongues stamped into the sheet forming the fixed tube and folded inwardly of the latter. In this case, an adjustment can be made according to the conditions of use. of the machine, more or less folding the tabs according to the areas in which they are located.
- the openings can be constituted by sash windows partially delimited by ferrules capable of being displaced axially on the tube when an operator acts on pull tabs provided for this purpose.
- the machine according to the invention is advantageously equipped with temperature detection means placed outside the ironing cylinder, opposite the end regions of the aforementioned space.
- the ventilation means are then controlled by the temperature detection means which correspond to them.
- each ventilation means can be actuated when the temperature detected by the temperature detection means closest to this ventilation means exceeds a given high threshold, and stopped when the temperature drops below a given low threshold.
- each ventilation means can in particular be constituted by a fan or an axial circulator.
- the flow rate provided by each of the fans can be modulated as a function of the temperature, in the nearest end region, either by modifying the speed of rotation of the fan, either by changing the angle of inclination of its fins.
- FIG. 1 is a schematic cross-sectional view of an ironing machine according to the invention.
- FIG. 1 is a longitudinal sectional view along the line II-II of Figure 1.
- FIG. 1 the faired frame of an ironing machine according to the invention is generally designated by the reference 10.
- the frame 10 designed to rest on the ground by feet 12, supports a rotary ironing cylinder 14 about a horizontal axis. More specifically, the ironing cylinder 14 rests on two rollers 16 mounted on horizontal and parallel axes carried by the chassis 10, so as to be able to rotate freely around these axes.
- the ironing cylinder 14 is a hollow metal cylinder, constituted for example by a sheet closed on itself.
- the ironing cylinder 14 is in contact with one or more endless bands 18 mounted on the chassis 10, outside the cylinder 14. More specifically, the endless belts 18 are supported and guided by a series of rollers 20 whose horizontal and parallel axes are carried by the frame 10. More precisely, the axes of the rollers 20 are parallel to the axes of the rollers 16.
- one of the rollers 20 is provided with means making it possible to tension the endless belts 18 and another of the rollers 20 is a drive roller, capable of being driven in rotation by a geared motor (not shown). When the drive roller is rotated, it drives with it the endless bands 18 in the direction of the arrows FI in FIG. 1.
- the ironing of the laundry parts is carried out by introducing these parts between the ironing cylinder 14 and the endless belts 18, in the upper part of the machine.
- the operator has a carpet 22 for introducing the linen, the slightly inclined upper face of which is oriented in a direction substantially tangential to the upper part of the cylinder 14, in the zone of contact of this cylinder with the strips. endless 18.
- a pressure roller 24 is generally placed between the insertion belt 22 and the start of the contact zone between the endless belts 18 and the ironing cylinder 14, so as to facilitate the insertion of the laundry items by pressing them against the cylinder.
- a laundry bin 26 can also be placed at the entrance to the introduction mat 22, to receive the laundry to be ironed.
- the frame 10 of the machine supports another laundry bin 28 in which the items of ironed laundry automatically fall.
- the frame 10 of the ironing machine according to the invention supports two fixed discs 30 and 32 which close each end of the ironing cylinder 14.
- a fixed tube 34 is mounted coaxially inside the ironing cylinder 14. More specifically, a first end of the fixed tube 34 is fixed on the fixed disc 30 and its opposite end is supported by the fixed disc 32. For this purpose, the end of the fixed tube 34 adjacent to the disc 32 is fixed on a flange 36 capable of sliding on a ferrule 38 fixed on the disc 32. This arrangement allows differential expansion between the fixed tube 34 and the chassis 10 of the machine.
- the fixed tube 34 is a metal tube which has in section the shape of a regular polygon. In the embodiment shown, this polygon has ten sides.
- the ironing cylinder 14 and the fixed tube 34 define between them an intermediate space 40, of annular shape.
- This intermediate space 40 receives heating means constituted by electrical resistors 42.
- These electrical resistors 42 are resistors of great length, oriented parallel to the axis common to the ironing cylinder 14 and to the fixed tube 34 and the ends of which are fixed respectively to the fixed disc 30 and to the flange 36.
- the heating resistors 42 are placed opposite each of the sides of the polygon formed in section by the fixed tube 34, with the exception of the lower side of this polygon.
- Supports 44 regularly distributed, connect each electrical resistance 42 to the fixed tube 34 between the disc 30 and the flange 36.
- air circulation means are placed inside the ironing cylinder 14, so as to take the air from the end regions of the space 40 to return it to the central region of the same space.
- air circulation makes it possible to cool the ends of the cylinder and to bring the heat drawn into the central part of the cylinder. This helps to homogenize the temperature over the entire length of the cylinder, because its ends are necessarily in contact with a smaller number of pieces of laundry than the central part, when using the machine. The creation of hot spots liable to burn the linen is thus avoided.
- the air circulation means comprise two series of suction openings 46 and 48 formed in the fixed tube 34 opposite the two end regions of the intermediate space 40, from which they wish to withdraw air.
- some of the suction openings 48 can also be formed on the flange 36 fixed to the end of the tube 34.
- the air circulation means further comprise two series of discharge openings 50 and 52 formed in the fixed tube 34, opposite the central part of the intermediate space 40 which it is desired to heat. More specifically, the two series of delivery openings 50 and 52 are formed in the fixed tube 34 on either side of a central partition 54, which divides the space defined inside the fixed tube 34 in two substantially equal volumes.
- the central partition 54 is oriented in a direction substantially perpendicular to the axis of the tube 34 and located equidistant from the disc 30 and the flange 36.
- Each of the two volumes thus delimited by the central partition 54 inside the fixed tube 34 is itself divided into two chambers by partitions 56 and 58 parallel to this central partition, interposed respectively between the suction openings 46 and the discharge openings 50 and between the suction openings 48 and the discharge openings 52.
- the chambers located opposite the suction openings 46 and 48 are designated respectively by the references 47 and 49 and the chambers situated opposite the discharge openings 50 and 52 are designated respectively by the references 51 and 53.
- the partition 56 has a circular opening extended towards the fixed disc 30 by a cylindrical tunnel 60, the part closest to the disc 30 is used to house an axial fan or circulator 62 forming a first ventilation means.
- This fan 62 whose axis is merged with that of the tube 34, is rotated by an electric motor 64 mounted on the disc 30, outside the space delimited by the ironing cylinder 14.
- the partition 58 has in its central part a circular opening extended towards the flange 36 by a cylindrical tunnel 66, the part closest to the flange 36 serves to accommodate an axial fan or circulator 68 forming a second means of ventilation.
- the axis of this fan 68 coincident with that of the tube 34, is rotated by an electric motor 70 mounted on the disc 32, outside the space delimited by the ironing cylinder 14. Thanks to the arrangement which has just been described, the air contained in the ironing cylinder 14 is circulated in the direction of the arrows F2 in FIG. 2 when the fans 62 and 68 are actuated. Thus, the air contained in the two end regions of the intermediate space 40, located opposite the two series of suction openings 46 and 48, is transferred by the two fans 62 and 68 into the chambers 47 and 49, through the aforementioned suction openings. The fans 62 and 68 then discharge this air into the chambers 51 and 53, from which it emerges in the central region of the space 40 through the two series of discharge orifices 50 and 52.
- the circulation of air by the fans 62 and 68 ensures a relatively large air flow which avoids any risk of formation of hot spots on the ironing cylinder, whatever the mode of introduction of the laundry items adopted. by the user. If necessary, the air flow can be adjusted. This can be obtained either by varying the angle of inclination of the fins of the fans 62 and 68, or by varying the speed of rotation of the fans, by acting on the electric motors 64 and 70.
- the location of the partitions 56 and 58 is determined so that, when the introduction of relatively large pieces of linen such as sheets is carried out alternately on one side and the other of the ironing cylinder, approximately one third of the width of the laundry items considered is located opposite the suction openings 46 or 48 as appropriate.
- the suction openings 46 and 48 and the delivery openings 50 and 52 are formed in the fixed tube 34 substantially opposite the electrical resistances 42, c that is to say in the central part of each of the sides of the regular polygon formed in section by the tube, with the exception of the lower side which carries no resistance.
- the openings 46, 48, 50 and 52 are obtained by stamping in the sheet metal which constitutes the fixed tube 34. More precisely, these openings include tongues stamped in the sheet and folded towards the inside of the fixed tube 34, in the direction facilitating the circulation of air. This arrangement allows, if necessary, to adjust the dimensions of the openings by deviating more or less the tabs of the tube, depending on the location where they are located. Adaptation to demand can thus be ensured in a particularly simple and inexpensive manner.
- the dimensions of the suction and discharge openings 46 and 48, 50, 52 can be adjusted using accessible adjustment means, for example from the face of the disc 30 facing outwards. of the ironing cylinder 14.
- the openings can then comprise a fixed part, cut directly in the tube 34 and a mobile part parallel to the axis of this tube, so that it can be more or less opened by a movement axial of this movable part, like sash windows.
- the movable parts grouped for example on common ferrules for each of the series of openings, can then be moved by means of pullers passing through the disc 30 and terminated by operating handles.
- the ironing machine advantageously comprises temperature detection means making it possible to control the temperature over the entire length of the cylinder. ironing 14.
- these temperature detection means comprise three temperature sensors 72, 74 and 76, mounted on the chassis 10 outside of the ironing cylinder 14 and in the immediate vicinity thereof.
- the sensor 72 is placed opposite the central part of the cylinder while sensors 74 and 76 are placed opposite each of its ends.
- the central sensor 72 is used to control the starting and stopping of the heating means that constitute the electrical resistors 42. More specifically, this sensor 72 controls the stopping of the heating when the detected temperature exceeds a given high threshold and it controls the start of heating when the temperature falls below a given low threshold.
- the temperature sensor 74 is used for the implementation and stopping of the fan 62 in front of which it is located. More specifically, the temperature sensor 74 controls the starting of the electric motor 64 when the detected temperature exceeds a given high threshold and it controls the stopping of this motor when the detected temperature becomes below a given low threshold. In a comparable manner, the temperature sensor 76 controls the starting and stopping of the fan 68 opposite which it is located. More specifically, the temperature sensor 76 controls the starting of the electric motor 70 when the detected temperature exceeds a given high threshold and it controls the stopping of this motor 70 when the detected temperature becomes below a given low threshold.
- the high temperature thresholds and the low temperature thresholds detected by the temperature sensors 74 and 76 are the same.
- the temperature sensors 72, 74 and 76 may in particular be two-contact thermostats. Alternatively, they can also consist of sensors associated with an electronic circuit.
- machine according to the invention has been described in its preferred application for ironing clothes, it can also be used to ensure the dimensioning of a piece of laundry by heat setting or in the context of the fixing of dyes on textile parts by heat setting.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Irons (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9608471A FR2750710B1 (en) | 1996-07-08 | 1996-07-08 | AIR CIRCULATING HEATING IRON MACHINE |
FR9608471 | 1996-07-08 | ||
PCT/FR1997/001221 WO1998001612A1 (en) | 1996-07-08 | 1997-07-07 | Ironing machine with heating cylinder and circulation of air |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1002152A1 true EP1002152A1 (en) | 2000-05-24 |
EP1002152B1 EP1002152B1 (en) | 2002-11-20 |
Family
ID=9493803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97931887A Expired - Lifetime EP1002152B1 (en) | 1996-07-08 | 1997-07-07 | Ironing machine with heating cylinder and circulation of air |
Country Status (8)
Country | Link |
---|---|
US (1) | US5933988A (en) |
EP (1) | EP1002152B1 (en) |
CZ (1) | CZ290378B6 (en) |
DE (1) | DE69717318T2 (en) |
ES (1) | ES2185955T3 (en) |
FR (1) | FR2750710B1 (en) |
TR (1) | TR199800416T1 (en) |
WO (1) | WO1998001612A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19814597C1 (en) * | 1998-04-01 | 1999-10-14 | Voith Sulzer Papiertech Patent | roller |
FR2805287B1 (en) * | 2000-02-23 | 2002-06-14 | Electrolux Syst Blanchisserie | IRONING DRYER WITH HEATING IRON AND HEAT FLUID |
WO2005068705A1 (en) * | 2004-01-19 | 2005-07-28 | Girbau, Sa | Roller ironing machine for articles of clothing |
SE531300C2 (en) * | 2006-01-31 | 2009-02-17 | Tetra Laval Holdings & Finance | A system and method for regulating and smoothing the temperature of two cooperating cylinders forming a nip through which a web is conducted |
ES2288413B1 (en) * | 2006-06-16 | 2008-11-01 | Girbau, S.A. | IRONING ROLLER. |
US8011598B2 (en) * | 2007-04-18 | 2011-09-06 | Delphi Technologies, Inc. | SOFC power system with A/C system and heat pump for stationary and transportation applications |
DE102015012404A1 (en) * | 2015-01-27 | 2016-07-28 | Herbert Kannegiesser Gmbh | Method and device for mangling laundry items |
WO2017212081A1 (en) * | 2016-06-08 | 2017-12-14 | Girbau, S.A. | Flatwork ironer |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1819534A (en) * | 1930-08-16 | 1931-08-18 | Kellman Sycamore Company | Heating system for ironing machines |
US1950669A (en) * | 1931-08-20 | 1934-03-13 | Gleason James | Fluid heated roll |
US1992368A (en) * | 1932-06-04 | 1935-02-26 | Easy Washing Machine Corp | Ironing machine |
US2950540A (en) * | 1955-09-28 | 1960-08-30 | Fleissner & Sohn Maschf | Willow driers |
DE2932398C2 (en) * | 1979-08-09 | 1981-10-15 | Siemens AG, 1000 Berlin und 8000 München | Device for cooling printed circuit boards after electrical components have been soldered in by machine |
US4781795A (en) * | 1986-04-08 | 1988-11-01 | Ray R. Miller | Heated drum having high thermal flux and belt press using same |
FR2652832B1 (en) * | 1989-10-06 | 1992-05-07 | Dubix De Souza Ets | IRONING MACHINE WITH ADJUSTABLE HEATING AREAS. |
FR2698388A1 (en) * | 1992-11-20 | 1994-05-27 | Meca 3 Sarl | Device for drying and ironing flat linen. |
US5551175A (en) * | 1994-10-17 | 1996-09-03 | Neyman; Joseph H. | Removing lint from flatwork ironer temperature sensors |
-
1996
- 1996-07-08 FR FR9608471A patent/FR2750710B1/en not_active Expired - Lifetime
-
1997
- 1997-07-07 CZ CZ1998697A patent/CZ290378B6/en not_active IP Right Cessation
- 1997-07-07 TR TR1998/00416T patent/TR199800416T1/en unknown
- 1997-07-07 EP EP97931887A patent/EP1002152B1/en not_active Expired - Lifetime
- 1997-07-07 WO PCT/FR1997/001221 patent/WO1998001612A1/en active IP Right Grant
- 1997-07-07 US US09/029,656 patent/US5933988A/en not_active Expired - Lifetime
- 1997-07-07 DE DE69717318T patent/DE69717318T2/en not_active Expired - Lifetime
- 1997-07-07 ES ES97931887T patent/ES2185955T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9801612A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998001612A1 (en) | 1998-01-15 |
CZ69798A3 (en) | 1998-07-15 |
TR199800416T1 (en) | 1999-02-22 |
FR2750710B1 (en) | 1998-11-27 |
ES2185955T3 (en) | 2003-05-01 |
US5933988A (en) | 1999-08-10 |
FR2750710A1 (en) | 1998-01-09 |
DE69717318D1 (en) | 2003-01-02 |
EP1002152B1 (en) | 2002-11-20 |
CZ290378B6 (en) | 2002-07-17 |
DE69717318T2 (en) | 2003-08-28 |
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