EP0517673B1 - A steam ironing machine - Google Patents
A steam ironing machine Download PDFInfo
- Publication number
- EP0517673B1 EP0517673B1 EP92830249A EP92830249A EP0517673B1 EP 0517673 B1 EP0517673 B1 EP 0517673B1 EP 92830249 A EP92830249 A EP 92830249A EP 92830249 A EP92830249 A EP 92830249A EP 0517673 B1 EP0517673 B1 EP 0517673B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boiler
- iron
- resistor
- steam
- resistors
- 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
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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
- D06F75/00—Hand irons
- D06F75/08—Hand irons internally heated by electricity
- D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
- D06F75/12—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water supplied to the iron from an external source
Definitions
- the invention relates to a steam ironing machine, in particular for domestic use.
- the prior art teaches steam ironing machines, also for domestic use, which comprises a boiler, for the production of the steam, from which the steam produced is sent, on command, to the iron; in this type of machine the boiler and the iron are two separate elements.
- Both the boiler and the iron use resistors respectively for the hating of the water and the production of the steam as well as for the heating of the ironing plate of the iron.
- ironing machines of the type in question in which the iron requires electrical power which is usually comprised between 0.7 and 0.9 KW, have available a rather limited amount of electrical power for the production of steam. This brings about quite long waiting times while the steam pressure is building up to the desired level, as well as a considerable reduction in steam pressure during use, in particular during lengthy use.
- patent EP 423540 a machine is described which is provided with a boiler for the production of steam and an external user, an iron, provided with an electronic card acting on the electric power supply such as automatically to reduce the supply to the boiler in relation to the absorption of electrical energy on the part of the external user.
- One aim of the present invention is that of eliminating the above-mentioned drawback by providing a steam ironing machine wherein the waiting time for the reaching of a desired steam pressure is reduced and in which there are no notable reductions in the steam pressure during use.
- the ironing machine object of the present invention comprises a boiler for the production of steam in which there are two resistors which are separately supplied with electric power, as well a an iron having one resistor which absorbs the same electric power as one of the resistors in the boiler; an electric commutator is also envisaged, which on command connects either the resistor of the iron or the equally absorbent resistor of the boiler to the electricity supply.
- the ironing machine comprises a boiler 1 for the production of steam, and an iron 2; the boiler 1 and the iron 2 are two separate elements which are connected, like in all machines of this type, by means of two cords, not indicated in the figures, one of which carries the electrical connections while the other conducts the steam from the boiler 1 to the iron 2.
- two resistors R1 and R2 are envisaged which are physically separated one from the other.
- the ends of the two resistors R1 and R2 are connected to a flange 4.
- the two resistors R1 and R2 are long and conformed in such a way as to be insertable into the boiler through a hole 3 made in the wall of the boiler 1 itself.
- insulating elements 5 are envisaged, constituted by, for example, gaskets made of teflon, which electrically insulate the flange 4, and thus the two resistors R1 and R2 from the boiler 1. This considerably reduces the damaging effects due to parasitic currents which can cause deterioration and even perforation of the boiler 1.
- the iron 2, or more specifically its hotplate, is heated electrically by means of a resistor R3; resistor R3 absorbs the same power absorbed by one of the resistors (for example, resistor R2) of the boiler 1.
- the machine comprises further an electric commutator C1, which on command connects to the electricity supply either the resistor R3 of the iron 2 or the resistor R2 of the boiler 1; in other words the two resistors R2 and R3 are never both connected to the electricity supply. This means that, under any operative conditions, the power absorbed by the machine in question is always the same.
- the boiler 1 can be equipped with two resistors which together absorb 2 KW and that individually 1,2 Kw and 0.8 KW.
- the machine When the machine is turned on, for example by means of the switch I1, the water begins to be heated for the production of steam; during this phase, the iron 2 is not functioning and all of the power absorbed by the machine can be used for the heating of the water in the boiler 1.
- the iron 2 is connected to the electricity supply, for example by means of a switch not indicated in the figure; simultaneously the commutator C1 is activated, which cuts off the connection with the resistor R2 and effects the connection of the resistor R3.
- the iron 2 can function normally while the boiler 1 continues to be heated by means of the resistor R1 alone.
- a thermostat with which the iron 2 is usually equipped, cuts off the current to the resistor R3 of the iron 2; the said thermostat can activate the commutator C1 so as again to supply the resistor R2 and to use the maximum power absorbed by the machine for the heating of the water.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Irons (AREA)
- Treatment Of Fiber Materials (AREA)
- Beans For Foods Or Fodder (AREA)
Abstract
Description
- The invention relates to a steam ironing machine, in particular for domestic use.
- The prior art teaches steam ironing machines, also for domestic use, which comprises a boiler, for the production of the steam, from which the steam produced is sent, on command, to the iron; in this type of machine the boiler and the iron are two separate elements.
- Both the boiler and the iron use resistors respectively for the hating of the water and the production of the steam as well as for the heating of the ironing plate of the iron.
- In particular, in ironing machines for domestic use, it is important to maintain the total electric power below a certain value inasmuch as the domestic power supply is not sufficient to bear request for electrical power above a predetermined level (in Italy in general this level is 3 KW). The total power requested by domestic irons is therefore in general kept below 2 KW.
- For this reason ironing machines of the type in question, in which the iron requires electrical power which is usually comprised between 0.7 and 0.9 KW, have available a rather limited amount of electrical power for the production of steam. This brings about quite long waiting times while the steam pressure is building up to the desired level, as well as a considerable reduction in steam pressure during use, in particular during lengthy use.
- In patent EP 423540 a machine is described which is provided with a boiler for the production of steam and an external user, an iron, provided with an electronic card acting on the electric power supply such as automatically to reduce the supply to the boiler in relation to the absorption of electrical energy on the part of the external user.
- One aim of the present invention is that of eliminating the above-mentioned drawback by providing a steam ironing machine wherein the waiting time for the reaching of a desired steam pressure is reduced and in which there are no notable reductions in the steam pressure during use.
- One advantage of the steam ironing machine object of the invention, which derives from its constructional particulars, is represented by its simplicity of assembly as well as by the reduction of the problems connected with the presence of parasitic currents internally to the boiler.
- These aims and others besides are all attained by the the ironing machine object of the present invention, as it is characterised in the claims which follow, which comprises a boiler for the production of steam in which there are two resistors which are separately supplied with electric power, as well a an iron having one resistor which absorbs the same electric power as one of the resistors in the boiler; an electric commutator is also envisaged, which on command connects either the resistor of the iron or the equally absorbent resistor of the boiler to the electricity supply. Further characteristics and advantages of the invention will better appears in the detailed description that follows, of a preferred but non-exclusive embodiment of the invention illustrated in the accompanying figures purely in the form of a non-limiting example, in which:
- Figure 1 shows an electrical diagram indicative of the connections among the various resistors of the ironing machine; in this figure the broken line indicates
blocks - Figure 2 shows a view from above of a particular relative to the assembly of the resistors of the boiler on the boiler itself;
- Figure 3 shows a lateral view of the particular of figure 2.
- The ironing machine comprises a
boiler 1 for the production of steam, and aniron 2; theboiler 1 and theiron 2 are two separate elements which are connected, like in all machines of this type, by means of two cords, not indicated in the figures, one of which carries the electrical connections while the other conducts the steam from theboiler 1 to theiron 2. - For the heating of the water in the boiler and the production of steam, two resistors R1 and R2 are envisaged which are physically separated one from the other. The ends of the two resistors R1 and R2 are connected to a flange 4. The two resistors R1 and R2 are long and conformed in such a way as to be insertable into the boiler through a hole 3 made in the wall of the
boiler 1 itself. - By the side of the hole 3, on the
boiler 1, two threatedbushes 6 are envisaged. The flange 4, once the resistors are introduced through the hole 3 is fixed to the threatedbushes 6 by means ofbolts 7 ; this permits an always correct positioning of the resistors internally to theboiler 1, which is not the case in several prior art machines in which the resistor heating the water in the boiler is connected to a screw that is tightened on to a threaded hole in the boiler itself. - Between the flange 4 and the
boiler 1 insulatingelements 5 are envisaged, constituted by, for example, gaskets made of teflon, which electrically insulate the flange 4, and thus the two resistors R1 and R2 from theboiler 1. This considerably reduces the damaging effects due to parasitic currents which can cause deterioration and even perforation of theboiler 1. - The
iron 2, or more specifically its hotplate, is heated electrically by means of a resistor R3; resistor R3 absorbs the same power absorbed by one of the resistors (for example, resistor R2) of theboiler 1. - The machine comprises further an electric commutator C1, which on command connects to the electricity supply either the resistor R3 of the
iron 2 or the resistor R2 of theboiler 1; in other words the two resistors R2 and R3 are never both connected to the electricity supply. This means that, under any operative conditions, the power absorbed by the machine in question is always the same. - Supposing that the resistor R3 absorb 0.8 KW power, the
boiler 1 can be equipped with two resistors which together absorb 2 KW and that individually 1,2 Kw and 0.8 KW. - When the machine is turned on, for example by means of the switch I1, the water begins to be heated for the production of steam; during this phase, the
iron 2 is not functioning and all of the power absorbed by the machine can be used for the heating of the water in theboiler 1. - Once the steam pressure reaches the desired level, the
iron 2 is connected to the electricity supply, for example by means of a switch not indicated in the figure; simultaneously the commutator C1 is activated, which cuts off the connection with the resistor R2 and effects the connection of the resistor R3. During this phase theiron 2 can function normally while theboiler 1 continues to be heated by means of the resistor R1 alone. When theiron 2 reaches the desired temperature, a thermostat, with which theiron 2 is usually equipped, cuts off the current to the resistor R3 of theiron 2; the said thermostat can activate the commutator C1 so as again to supply the resistor R2 and to use the maximum power absorbed by the machine for the heating of the water. - Substantially, differently from that happens in prior art machines, in the present machines it is possible to use, when the resistor R3 of the
iron 2 is not heating the hotplate of theiron 2, the entire power absorbed by the machine for the heating of the water. This permits a much quicker initial heating of the water, in that when the machine is switched on theiron 2 is not likewise switched on; this further permits of maintaining high steam pressure internally to theboiler 1 during functioning of the machine in that, since the suspension of power to theiron 2 are very frequent due to its reaching the required temperature, the times when all of the power can be dedicated to the production of steam can be equally frequent.
Claims (2)
- A steam ironing machine of the type comprising: a boiler (1) for the production of steam, wherein water is electrically heated; an iron (2) having a hotplate which is electrically heated by means of a resistor (R3); two cords connecting the boiler (1) and the iron (2), the first of which carries the electrical connections while the second of which conducts the steam from the boiler (1) to the iron (2), characterised by the fact of comprising: two resistors (R1) and (R2) for the heating of the water in the boiler (1), which resistors are separately supplied, the second of which resistors (R2) absorbs the same power as the resistor (R3) used for the iron (2) hotplate; an electric commutator (C1) to connect to the electricity supply either the second resistor (R2) of the boiler (1) or the resistor (R3) of the iron (2).
- A machine as in claim 1, characterised by the fact that the boiler (1) exhibits a hole (3) by the side of which two threaded bushes (6) are envisaged; the resistors of the boiler (1) are conformed in such a way as to be insertable into the said hole (3) and are both connected to a flange (4) connectable to the boiler (1) by means of bolts (7) which are screwed in to the said threaded bushes (6); electrically insulating elements (5) are also envisaged, interpositioned between the said flange (4) and the said boiler (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMO910082A IT1246562B (en) | 1991-05-24 | 1991-05-24 | STEAM IRONING MACHINE. |
ITMO910082 | 1991-05-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0517673A1 EP0517673A1 (en) | 1992-12-09 |
EP0517673B1 true EP0517673B1 (en) | 1995-05-10 |
Family
ID=11384994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92830249A Expired - Lifetime EP0517673B1 (en) | 1991-05-24 | 1992-05-22 | A steam ironing machine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0517673B1 (en) |
AT (1) | ATE122417T1 (en) |
DE (1) | DE69202398T2 (en) |
ES (1) | ES2072129T3 (en) |
IT (1) | IT1246562B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9408167U1 (en) * | 1994-05-18 | 1995-06-14 | Planeta Hausgeräte GmbH & Co Elektrotechnik KG, 87719 Mindelheim | Possibility of switching the various heating types of a steam ironing and cleaning device in accordance with the usual household security |
DE19505342C1 (en) * | 1995-02-17 | 1996-04-18 | Kaercher Gmbh & Co Alfred | Combined steam cleaning and steam ironing device |
ITUD20020149A1 (en) * | 2002-07-04 | 2004-01-05 | Commital Sami Spa | ELECTRIC DEVICE FOR HOUSEHOLD APPLIANCES SUCH AS A VACUUM CLEANER, A LIQUID VACUUM CLEANER, AN IRON AND SIMILAR, FOR DOMESTIC AND / OR PROF USE |
CN101072911B (en) * | 2004-11-11 | 2011-06-08 | 皇家飞利浦电子股份有限公司 | Steam iron having two flat resistive heating elements for heating the soleplate |
ITUD20110202A1 (en) * | 2011-12-16 | 2013-06-17 | Longhi Appliances S R L Con Un Ico Socio De | DEVICE FOR THE OPTIMIZATION OF ENERGY ABSORBED BY A STRETCHING AND RELATIVE PROCEDURE |
ES2456841B1 (en) * | 2012-10-19 | 2015-03-04 | Bsh Electrodomesticos Espana | Ironing station with a regulator and / or control unit |
FR3067724B1 (en) * | 2017-06-14 | 2019-07-05 | Seb S.A. | IRONING APPARATUS EQUIPPED WITH A TANK HEATED BY FIRST AND SECOND ELECTRICAL RESISTORS |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8515745U1 (en) * | 1985-05-29 | 1987-08-27 | Dipl.-Ing. Riba Gmbh & Co Kg, 5450 Neuwied | Steam boiler for a steam ironing device |
EP0423540B2 (en) * | 1989-10-20 | 1996-07-10 | S.T.E.M. S.R.L. | Steam generator for domestic and industrial use |
-
1991
- 1991-05-24 IT ITMO910082A patent/IT1246562B/en active IP Right Grant
-
1992
- 1992-05-22 ES ES92830249T patent/ES2072129T3/en not_active Expired - Lifetime
- 1992-05-22 EP EP92830249A patent/EP0517673B1/en not_active Expired - Lifetime
- 1992-05-22 DE DE69202398T patent/DE69202398T2/en not_active Expired - Fee Related
- 1992-05-22 AT AT92830249T patent/ATE122417T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ITMO910082A0 (en) | 1991-05-24 |
EP0517673A1 (en) | 1992-12-09 |
ATE122417T1 (en) | 1995-05-15 |
ITMO910082A1 (en) | 1992-11-24 |
DE69202398T2 (en) | 1995-09-14 |
DE69202398D1 (en) | 1995-06-14 |
ES2072129T3 (en) | 1995-07-01 |
IT1246562B (en) | 1994-11-24 |
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