EP1130152B1 - Bügelmaschine mit einer beheizten Walze und einer Wärmeträgerflüssigkeit - Google Patents

Bügelmaschine mit einer beheizten Walze und einer Wärmeträgerflüssigkeit Download PDF

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Publication number
EP1130152B1
EP1130152B1 EP01400446A EP01400446A EP1130152B1 EP 1130152 B1 EP1130152 B1 EP 1130152B1 EP 01400446 A EP01400446 A EP 01400446A EP 01400446 A EP01400446 A EP 01400446A EP 1130152 B1 EP1130152 B1 EP 1130152B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
dryer
wall
annular chamber
cylindrical wall
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.)
Expired - Lifetime
Application number
EP01400446A
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English (en)
French (fr)
Other versions
EP1130152A1 (de
Inventor
Cyril Marc Michel Grandpierre
André Maziere
Claude Dermy
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.)
Electrolux Laundry Systems France SNC
Original Assignee
Electrolux Systemes de Blanchisserie SNC
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 Electrolux Systemes de Blanchisserie SNC filed Critical Electrolux Systemes de Blanchisserie SNC
Priority to SI200130118T priority Critical patent/SI1130152T1/xx
Publication of EP1130152A1 publication Critical patent/EP1130152A1/de
Application granted granted Critical
Publication of EP1130152B1 publication Critical patent/EP1130152B1/de
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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
    • D06F67/02—Rollers; Heating arrangements therefor

Definitions

  • the invention relates to a dryer-ironer in which the laundry is ironed between a cylinder of heated ironing and one or more endless bands who are in contact with the cylinder on a part of its circumference.
  • the dryer-ironer according to the invention can to be used in all cases where quantities relatively large quantities of linen should be ironed frequently. So and only for example, such a machine can be particularly used in hospitals, retirement homes, hotels, guesthouses, restaurants, etc ..
  • ironing clothes are introduced one after the other between a cylinder rotating, generally horizontal axis, and one or several endless bands that are in contact with the cylinder over its entire length and over part of its circumference.
  • Heating means placed at inside the cylinder carry the metal wall of this one at a determined temperature, chosen so to ensure an efficient ironing of the linen.
  • Heating means that are placed at the inside of the ironing cylinder are different types, depending on the machines. Thus, these means of heating may include a gas ramp, heating resistors, heaters infrared, etc.
  • the ironing cylinder has a cylindrical wall relatively thick. This wall is usually made of steel. It has a thermal inertia relatively important, because of its thickness.
  • Ironers are also known to heated ironing cylinder, in which the cylinder heating is provided by a fluid coolant such as oil.
  • the fluid coolant is heated in a boiler located at the outside of the machine, before being transported to the cylinder by a pump, also placed out of the machine.
  • Such a machine does not have the disadvantages of ironing dryers whose ironing cylinder is heated by means of integrated heating to this cylinder. Indeed, the permanent circulation of the coolant allows to ensure an efficient distribution of heat on the entire length of the cylinder and, therefore, give it a substantially homogeneous temperature throughout its length even after the passage of a room of laundry in the machine.
  • the subject of the invention is precisely a ironing ironer, presenting both the advantages of simplicity machines with integrated heating in the cylinder and benefits of uniform heat distribution on the entire length of the cylinder of machines whose cylinder is heated by a coolant.
  • a dryer-ironer comprising a ironing cylinder provided with a cylindrical wall and adapted to rotate about an axis of said wall, and heating means placed inside the cylinder, so as to heat the cylindrical wall, the cylinder further comprising a wall outside, surrounding the cylindrical wall so as to define with it a closed annular chamber, filled with a coolant, according to US 4,677,773 representing the closest state of the art, the cylinder according to the invention further comprising means of brewing able to create a circulation of the fluid coolant inside said chamber, said brewing means comprising organs placed in the annular chamber.
  • the ironing cylinder is heated from the inside by heating means traditional methods, which may be existing machines whose cylinder is heated from inside.
  • heating means traditional methods which may be existing machines whose cylinder is heated from inside.
  • the use of a cylinder double-wall ironing, the filling of the closed annular chamber thus defined by a fluid coolant and the use of brewing means of this fluid integrated in the cylinder make it possible to ensure efficient distribution of heat throughout the length of the cylinder without substantially increasing the complexity and price of the machine.
  • the aforementioned organs are organs passive, placed in the annular chamber so as to create the circulation of the coolant when the cylinder revolves around its axis.
  • These passive organs include, for example, fins carried by the cylindrical wall, these fins being inclined with respect to the axis of the cylinder, so as to cause a displacement of the fluid coolant parallel to the axis of the cylinder, when the rotation of it.
  • the fins have a height substantially equal to the thickness of the chamber annular, so as to serve also as support for the outer wall of the cylinder.
  • the heat transfer fluid is a liquid which fills only part of the annular chamber. This liquid is surmounted by a neutral gas, so that the annular chamber also acts as a vase expansion.
  • stabilizing elements such as balls are then placed in the liquid to oppose a rotation of it with the cylinder when it rotates around its axis.
  • the aforementioned organs are partitions arranged in a baffle in the annular chamber, for delimit between the cylindrical wall and the wall outside the cylinder a trip back and forth substantially parallel to the axis of the cylinder.
  • Ways brewing machines then comprise, moreover, means such as a pump to circulate the heat transfer fluid according to this path.
  • the outer wall preferably has a thickness less than that of the cylindrical wall.
  • the outer wall of the cylinder is advantageously made of stainless steel and the cylindrical wall of ordinary steel.
  • At least one end of the outer wall is surrounded by a drain area delimited externally by a fixed casing.
  • a valve is then mounted in the aforementioned end of the wall outside to allow communication between the annular chamber with the emptying space, in case overpressure in said chamber.
  • a pipe connects the emptying space to a tank, to ensure a flow of heat transfer fluid by gravity.
  • the dryer-ironer comprises an ironing cylinder 10 as well as one or more endless bands 12 that are in contact with the cylinder 10 over its entire length and on most of its periphery.
  • This kind of machine is well known to those skilled in the art, so that only the characteristics necessary for a good understanding of the invention will be described.
  • the ironing cylinder 10 is supported by a fixed frame (not shown) so as to be able to rotate freely around an axis 14 substantially horizontal.
  • the endless belts 12 are supported and guided by rollers 16 carried by the chassis of the machine.
  • the axes of rotation of the rollers 16 are parallel to the axis 14 of the ironing cylinder 10.
  • One any of the rollers 16 is likely to be rotated by a gearmotor (no represented) so that it can move endless bands 12 in the direction of the arrows on the figure 1. This displacement results in a rotation of the ironing cylinder 10 in the same direction and at the same speed.
  • the ironing cylinder 10 is equipped internally heating means of any one known type, likely to bring the cylinder to a chosen temperature to ensure ironing effective laundry.
  • These heating means 18 can be any heating means such as electric heaters, a gas ramp, a device infrared heating, etc. without going outside the invention.
  • the pieces of linen are introduced, one after the other, between ironing cylinder 10 and the endless belts 12, in the upper part of the machine. They walk then between the cylinder and the endless belts, for stand out in the lower part of the machine.
  • the cylinder of ironing 10 presents an original structure that goes to present be described with reference to Figure 2.
  • the cylinder of ironing 10 comprises a cylindrical wall 20, centered on the axis 14 and made of a metal such as steel ordinary.
  • the thickness of the cylindrical wall 20 is chosen to ensure a good mechanical strength of the cylinder, practically without deformation, during ironing. This thickness varies for example between 4 mm and 6 mm depending on the size of the cylinder.
  • the heating means 18 are placed inside the cylindrical wall 20.
  • the cylindrical wall 20 is doubled externally, over practically all its length, by a cylindrical outer wall 22, also centered on the axis 14.
  • the outer wall 22 is made of stainless steel and it has a thickness substantially smaller than that of the cylindrical wall 20. More specifically, the thickness of the wall cylindrical 20 is at least twice that of the wall 22, which may for example vary between 1.5 mm and 2 mm depending on the size of the cylinder ironing.
  • the outer wall 22 is mounted concentrically and away from the cylindrical wall 20, for example by means of two rings 24 welded to near the ends of the cylindrical wall 20 and on which are welded the ends of the wall outside 22.
  • annular chamber closed 26 of uniform thickness, which is filled less in part of a heat transfer fluid.
  • the ironing cylinder 10 is also equipped with means integrated brewing systems, designed to ensure circulation of the coolant contained in the closed annular chamber 26, when the cylinder of Ironing 10 rotates about its axis 14. More precisely, the brewing means have the function of to circulate the heat transfer fluid at a time parallel to the axis 14 of the cylinder, so to homogenize the temperature, and between the walls 20 and 22, in order to transmit to the outer wall 22 the heat released by the heating means 18.
  • At least one of ends of the outer wall 22 of the cylinder of ironing 10 is surrounded by a drainage space 28, delimited inwardly by said outer wall 22 and, outwards and on the sides, by a crankcase fixed 30.
  • Sealing members such as seals turners 31 carried by the fixed housing 30 ensure the watertightness of the emptying space 28.
  • a valve 32 mounted on the end of the outer wall 22 surrounded by the emptying space 28, allows to put in communication the room ring 26 with said emptying space, in particular when the pressure in the chamber 26 exceeds a threshold predetermined.
  • the bottom of the emptying space 28 communicates with a reservoir 34 by a pipe 36.
  • This duct 36 is arranged to ensure a gravity flow of the heat transfer fluid collected in the emptying space 28 to the tank 34.
  • the means for mixing the coolant with inside the annular chamber 26 can especially be passive type.
  • the brewing means include passive members such as fins 38 placed in the annular chamber 26, so as to create the desired heat transfer fluid circulation when the cylinder 10 rotates about its axis 14. More specifically, the fins 38 are arranged way to bring back the heat transfer fluid from the ends of the annular chamber 26, towards a central region of it.
  • the fins 38 may in particular take the form of propellers wound in one direction on a first of these sections and rolled in the opposite direction on the other section, the direction of the windings being such that the coolant is brought back from the ends towards the center when the ironing cylinder 10 turns around its axis 14.
  • the fins 38 are fixed on the cylindrical wall 20, for example by welding, and they have a height substantially equal to the thickness of the annular chamber 26, this thickness being, for example, about 5 mm.
  • the fins 38 thus also serve as support for the outer wall 22, which we have seen was usually relatively small thickness compared to that of the cylindrical wall 20 of the cylinder 10.
  • This arrangement makes it possible to preserve a shape geometrically satisfactory for the outer wall 22, which is used directly for ironing clothes when the machine is in operation.
  • helical fins 38 can be replaced by sections of fins substantially planar so as to reduce the cost of manufacturing the machine.
  • the heat transfer fluid contained in the chamber ring 26 is usually constituted by a liquid such as an oil capable of providing a transfer effective heat between the cylindrical wall 20 and the outer wall 22, under the conditions of ironing temperature.
  • a liquid such as an oil capable of providing a transfer effective heat between the cylindrical wall 20 and the outer wall 22, under the conditions of ironing temperature.
  • the heat transfer liquid 40 only fills part of the annular chamber 26.
  • the part upper part of the annular chamber 26 is filled with a neutral gas.
  • Room 26 acts as a vase expansion.
  • liquid coolant 40 is rotated by the fins 38 and the walls 20 and 22 of the cylinder 10 when of the rotation of it. Indeed, it would decrease the mixing of the liquid and, consequently, obtaining a substantially homogeneous temperature over the entire length of the outer wall 22 of the cylinder. In this Indeed, it is advantageous to place stabilizing elements such as balls 42 in the liquid 40.
  • Active brewing means for moving the fluid coolant in the annular chamber 26 formed between the cylindrical wall 20 and the outer wall 22 of the cylinder.
  • These active stirring means make it possible to move the coolant independently of the rotation of the cylinder.
  • Active brewing means include then partitions 44a, 44b, 44c disposed in a baffle at inside the annular chamber 26, so as to delimit between the cylindrical wall 20 and the wall outer 22 of the cylinder 10 a back and forth, oriented substantially parallel to the axis 14 of the cylinder. Active brewing means include also means of training, such as a pump 46, mounted on the cylinder so as to circulate the coolant according to the path delimited by the partitions 44a, 44b, 44c.
  • the partitions 44a, 44b, 44c delimiting the aforesaid route are fixed on the cylindrical wall 20 and extend over a height substantially equal to the thickness of the chamber ring 26, so that they also serve for supporting the outer wall 22, such as the fins 38 in the first embodiment of the invention.
  • the aforementioned partitions comprise a partition circumference 44a, placed near one of the rings 24, so as to delimit with it a channel Annular 48.
  • a number of straight partitions 44d, also parallel to the axis 14, are regularly distributed over the entire circumference of the cylinder, between the circumferential partition 44a and the ring 24 furthest from this partition, from other straight partitions 44b and 44c. The straight partitions 44b, 44c and 44d thus delimiting, between them, axial channels 50.
  • circumferential partition 44a is interrupted, between the two straight partitions 44d closest to the straight partition 44c, for communicate the axial channels 50 adjacent to this one with the annular channel 48.
  • one in two of the partitions rectilinear lines 44d is interrupted, in turn, at near the ring 24 furthest from the partition circumferential 44a and in the vicinity of said partition circumferentially.
  • the straight partition 44b is also interrupted near the ring 24 the further away from the circumferential partition 44a. More precisely, the arrangement is such that the two partitions rectilinear 44d closest to the partition rectilinear 44b are interrupted near the circumferential partition 44a and that the two partitions rectilinear 44d closest to the partition rectilinear 44c are interrupted near the ring 24 furthest from the wall circumferential 44a.
  • the axial channels 50 adjacent thus communicate with each other alternately end and to the other of the cylinder. We delimit this way a trip back and forth, for the fluid coolant, parallel to the axis of the cylinder 10.
  • the pump 46 is carried by the cylinder 10 and connected to the annular channel 48, on both sides of the straight partition 44b, by suction lines 51 and discharge 52.
  • the dryer-ironer has a relatively simple and inexpensive.
  • the cylindrical wall 20, which is not in contact with ironing linen can be made of steel ordinary. The amount of stainless steel can therefore be reduced, compared to an existing machine, from that the outer wall 22 has a thickness less.
  • the presence of the coolant between the two walls of the cylinder and the circulation of this fluid coolant by passive mixing means or assets that equip the cylinder allow to equalize the temperature of the outer wall 22, in contact with the linen, during the entire ironing.
  • the ironing quality is thus very significantly improved compared to ironers heated ironing cylinder from the inside which exist to date.
  • the machine can undergo numerous modifications, without departing from the invention.
  • the brewing means allowing to put in motion the heat transfer fluid between the two walls of the cylinder can take different from those described.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Fertilizers (AREA)

Claims (12)

  1. Trocken- und Bügelmaschine, umfassend einen Bügelzylinder (10), der mit einer Zylinderwand (20) versehen und dazu ausgelegt ist, sich um eine Achse (14) der Wand zu drehen, sowie Heizmittel (18), die im Inneren des Zylinders (10) derart angeordnet sind, daß sie die Zylinderwand (20) heizen, wobei der Zylinder (10) ferner eine Außenwand (22) umfaßt, welche die Zylinderwand (20) derart umgibt, daß sie mit dieser eine geschlossene Ringkammer (26) begrenzt, die mit einem Wärmeübertragungsfluid gefüllt ist, dadurch gekennzeichnet, daß der Zylinder (10) ferner Umwälzmittel (38; 44a, 44b, 44c, 44d, 46) umfaßt, die dazu ausgelegt sind, eine Zirkulation des Wärmeübertragungsfluids im Inneren der Kammer (26) zu bewirken, wobei die Umwälzmittel Organe (38; 44a, 44b, 44c, 44d) umfassen, die in der Ringkammer (26) angeordnet sind.
  2. Trocken- und Bügelmaschine nach Anspruch 1, bei der die Organe passive Organe (38) sind, welche derart in der Ringkammer (26) angeordnet sind, daß sie die Zirkulation des Wärmeübertragungsfluids bewirken, wenn sich der Zylinder (10) um seine Achse (14) dreht.
  3. Trocken- und Bügelmaschine nach Anspruch 2, bei der die passiven Organe Schaufeln (38) umfassen, die von der Zylinderwand (20) getragen werden, wobei die Schaufeln (38) bezüglich der Achse (14) des Zylinders (10) geneigt sind.
  4. Trocken- und Bügelmaschine nach Anspruch 3, bei der die Schaufeln (38) eine Höhe aufweisen, die im wesentlichen gleich der Dicke der Ringkammer (26) ist, derart, daß sie als Anlage für die Außenwand (22) dienen.
  5. Trocken- und Bügelmaschine nach einem der Ansprüche 2 bis 4, bei der das Wärmeübertragungsfluid eine Flüssigkeit ist, die nur einen Teil der Ringkammer (26) ausfüllt, wobei sich über der Flüssigkeit ein neutrales Gas befindet.
  6. Trocken- und Bügelmaschine nach Anspruch 5, bei der Stabilisatorelemente (42) in der Flüssigkeit angeordnet sind, um einer Drehung derselben entgegen zu wirken, wenn sich der Zylinder (10) um seine Achse (14) dreht.
  7. Trocken- und Bügelmaschine nach Anspruch 1, bei der die Organe Wände (44a, 44b, 44c, 44d) sind, die schikanenförmig in der Ringkammer (26) angeordnet sind, um zwischen der Zylinderwand (20) und der Außenwand (22) einen Hin- und Her-Weg zu begrenzen, der im Wesentlichen parallel zur Achse (14) des Zylinders (10) verläuft, wobei die Umwälzmittel ferner Antriebsmittel (46) umfassen, um das Wärmeübertragungsfluid entlang des Wegs zirkulieren zu lassen.
  8. Trocken- und Bügelmaschine nach Anspruch 7, bei der die Wände (44a, 44b, 44c, 44d) eine Höhe aufweisen, die im Wesentlichen gleich der Dicke der Ringkammer (26) ist, derart, daß sie als Anlage für die Außenwand (22) dienen.
  9. Trocken- und Bügelmaschine nach einem der vorhergehenden Ansprüche, bei der die Außenwand (22) eine kleinere Dicke als die Zylinderwand (20) aufweist.
  10. Trocken- und Bügelmaschine nach einem der vorhergehenden Ansprüche, bei der die Außenwand (22) aus rostfreiem Stahl und die Zylinderwand (20) aus gewöhnlichem Stahl hergestellt ist.
  11. Trocken- und Bügelmaschine nach einem der vorhergehenden Ansprüche, bei der wenigstens ein Ende der Außenwand (22) von einem Entleerungsraum (28) umgeben ist, welcher außen von einem festen Gehäuse (30) begrenzt ist, wobei ein Ventil (32) in dem Ende der Außenwand (22) montiert ist, um ein Inverbindungbringen der Ringkammer (26) mit dem Entleerungsraums (28) im Fall eines Überdrucks in der Kammer zu ermöglichen.
  12. Trocken- und Bügelmaschine nach Anspruch 11, bei der eine Gravitations-Abflußleitung (36) den Entleerungsraum (28) mit einem Reservoir (34) verbindet.
EP01400446A 2000-02-23 2001-02-20 Bügelmaschine mit einer beheizten Walze und einer Wärmeträgerflüssigkeit Expired - Lifetime EP1130152B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130118T SI1130152T1 (en) 2000-02-23 2001-02-20 Ironing machine with a heated roller and a heat transfer fluid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0002231 2000-02-23
FR0002231A FR2805287B1 (fr) 2000-02-23 2000-02-23 Secheuse-repasseuse a cylindre de repassage chauffant et fluide caloporteur

Publications (2)

Publication Number Publication Date
EP1130152A1 EP1130152A1 (de) 2001-09-05
EP1130152B1 true EP1130152B1 (de) 2004-04-21

Family

ID=8847286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400446A Expired - Lifetime EP1130152B1 (de) 2000-02-23 2001-02-20 Bügelmaschine mit einer beheizten Walze und einer Wärmeträgerflüssigkeit

Country Status (9)

Country Link
US (1) US6341436B2 (de)
EP (1) EP1130152B1 (de)
AT (1) ATE264935T1 (de)
CZ (1) CZ302606B6 (de)
DE (1) DE60102848T2 (de)
DK (1) DK1130152T3 (de)
ES (1) ES2218345T3 (de)
FR (1) FR2805287B1 (de)
SI (1) SI1130152T1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005068705A1 (es) 2004-01-19 2005-07-28 Girbau, Sa Maquina planchadora de rodillos para artículos de ropa
ES2211364A1 (es) * 2004-02-27 2004-07-01 Girbau, S.A. Rodillo calentable para maquina planchadora-secadora de articulos de ropa.
ES2288413B1 (es) * 2006-06-16 2008-11-01 Girbau, S.A. Rodillo de planchado.
IT201700013598A1 (it) * 2017-02-08 2018-08-08 Barnini S R L Rullo caldo per macchine rotative

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE186629C (de) *
US2225166A (en) * 1938-10-06 1940-12-17 Christopher Statter Web drying apparatus
US2362947A (en) * 1942-12-12 1944-11-14 Red & White Laundry & Cleaning Direct fired revolving ironer and drier
FR1269278A (fr) * 1960-06-30 1961-08-11 Blanchisseries Et Teintureries Perfectionnements aux sécheuses-repasseuses
US4418486A (en) * 1981-10-27 1983-12-06 Chicago Dryer Company Heated smoothing roll
US4677773A (en) * 1985-12-20 1987-07-07 New Super Laundry Machinery Co. Inc. Heated rotary flatwork ironer
FR2750710B1 (fr) * 1996-07-08 1998-11-27 Dubix De Souza Snc Machine a repasser a cylindre chauffant et a circulation d'air

Also Published As

Publication number Publication date
US6341436B2 (en) 2002-01-29
ATE264935T1 (de) 2004-05-15
ES2218345T3 (es) 2004-11-16
US20010015025A1 (en) 2001-08-23
CZ2001639A3 (cs) 2001-10-17
FR2805287A1 (fr) 2001-08-24
SI1130152T1 (en) 2004-12-31
DE60102848D1 (de) 2004-05-27
DE60102848T2 (de) 2005-05-12
FR2805287B1 (fr) 2002-06-14
EP1130152A1 (de) 2001-09-05
CZ302606B6 (cs) 2011-08-03
DK1130152T3 (da) 2004-07-26

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