EP0342302B1 - A steam delivery plate for steam irons - Google Patents
A steam delivery plate for steam irons Download PDFInfo
- Publication number
- EP0342302B1 EP0342302B1 EP88830229A EP88830229A EP0342302B1 EP 0342302 B1 EP0342302 B1 EP 0342302B1 EP 88830229 A EP88830229 A EP 88830229A EP 88830229 A EP88830229 A EP 88830229A EP 0342302 B1 EP0342302 B1 EP 0342302B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- plate
- delivery
- chambers
- conduit
- 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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Images
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
- D06F75/20—Arrangements for discharging the steam to the article being ironed
-
- 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
- D06F75/38—Sole plates
Definitions
- This invention relates to a steam delivery plate for a steam iron comprising the features pointed out in the precharacterizing part of the claim.
- a steam iron is for example described in FR-A-2490255.
- the plates having their holes evenly distributed suit best the ironing of fabrics which are better served by a relatively slow penetration of the steam through their fibers, and no setting of the fibers at a high temperature.
- plates having their holes concentrated toward the tip are characterized by a relatively high steam outflow velocity and higher fiber setting capability by those plate areas which are not apertured and are, therefore, hotter.
- an iron in two different modes: a first mode of conventional ironing with the iron resting on and running across a fabric being ironed in order to flatten out any creases by the combined action of heat, steam, and the slight pressure exerted by the operator; a second mode in that of having the fabric fluffed by the sole action of steam.
- the iron is held in a substantially upright position and moved nearer the fabric so as to direct the steam jets from the steam delivery holes onto it.
- the plates which have their steam delivery holes gathered more toward the tip suit fabric flutting best because of the steam being delivered at a higher outflow velocity thereby.
- such irons may not be the preferred ones for primary ironing requirements.
- the problem underlying this invention is to provide a steam delivery plate for irons which affords an ability to select each time the steam delivery mode, either concentrated or distributed, which suit best the intended purpose.
- a steam delivery plate 1 for steam irons comprises essentially a base element 2 and a cover 3.
- the base element 2 has a substantially flat surface forming the ironing sole piece 4.
- the sole piece 4 has a substantially triangular shape with arcuate oblique sides 4a, 4b, and a straight base 4c.
- the element 2 is provided, on the opposite side from the sole piece 4, with a capping 6 standing proud of a base plane 7. From the plane 7, there extends a first upright rib 8 of continuous closed loop configuration having two sections 8a,b running at a short distance from the oblique sides 4a,b, and a third section 8c running parallel to the base 4c.
- a second rib 9 connects to the section 8c which has an inverted "U" configuration; a third rib 10 extends between the sections 8a and 8b.
- All the ribs 8, 9 and 10 rise from the base plane 7 to the same height level and are formed at their tops with a groove 11 for accommodating a sealing gasket 12 intervening to form a tight fit between the base element 2 and the cover 3.
- a steam intake and superheating chamber 15 Defined between the ribs 8, 9 and 10 on the base element 2, are a steam intake and superheating chamber 15 and two steam delivery chambers, respectively indicated at 16 and 17.
- the chamber 16 is located proximate the tip of the plate 1, whilst the chamber 17 extends around the steam intake chamber 15 horseshoe fashion. All of the above chambers, 15, 16 and 17, have their tops closed by the cover 3.
- a plurality of elevations 20 are provided which are substantially frustoconical in shape and through-penetrated axially by a steam delivery hole 21.
- the holes 21 extend through the base element 2 and open into the sole piece 4 with a flaring end.
- the cover 3 has a first, essentially flat surface 23 whose outline mates with the upper edge of the rib 8, and is through-penetrated by four holes 24 intended for fastening said cover to the base element 2 by means of screw fasteners, not shown, threadably engaged in seats 25.
- a steam intake conduit 28 is arranged to open through the cover 3.
- the cover 3 On the remote side from the surface 23, the cover 3 has an electric resistance heater 30 embedded therein for heating the plate 1.
- the resistance heater 30 By locating the resistance heater 30 on the cover 3 rather than the base element of the plate, a more uniform distribution of heat across the sole piece 4 can be obtained with no overheated spots on the latter.
- a captive screw 31 Secured between the legs of the resistance heater 30 are a captive screw 31 and an abutment peg 32 for mounting a thermostat. Also provided are tangs 33 for anchoring the plate 1 on a body, not shown, of the iron.
- a channel 35 which is closed at the top by a plate 36, with the interposition of a sealing gasket 37.
- the channel 35 communicates, via passageways 38, with the steam intake chamber 15, and via two respective passageways 39 and 40, with the two delivery chambers 17 and 16. Said channel 35 forms therefore a steam supply conduit to the two delivery chambers 16 and 17.
- a seat 41 Formed in the channel 35 at the passageway 39, is a seat 41 adapted to receive a small pillar 42 which extends at right angles from the plate 36.
- a right-angle bore 43 is formed in that pillar.
- the free edge of the bore 43 is flared to provide a detent for a ball shutter 44 which is freely movable in the channel 35 between the passageway 40 and the pillar 42.
- the pillar 42 and ball 44 form a valving means for shutting off the supply of steam to the chamber 17.
- the ironing appliance of this invention operates as follows.
- the ball 44 With the plate 1 in a substantially vertical orientation, the ball 44 will abut the pillar 32 and settle on the free edge of the bore 43.
- the ball 44 By returning the plate 1 to its horizontal orientation, the ball 44 will uncover the bore 43 if the supply of steam to the plate is interrupted. Otherwise, if the supply of steam is maintained, the steam pressure holds the ball 44 engaged with the free edge of the bore 43, and the steam, even with the plate horizontal, will be only supplied through the holes provided in the delivery chamber 16.
- the plate of this invention affords several advantages over conventional plates. Firstly, the possibility has been significantly enhanced of using an ironing appliance equipped with this plate for steaming operations. Secondly, the sole piece of the plate according to the invention is at a uniformly distributed temperature as achieved by mounting the resistance heater on the cover.
- this plate can deliver steam which is almost free of any suspended water droplets.
- the steam delivery plate disclosed hereinabove is equally effective when supplied with steam from a separate boiler, and with water for in situ generation of steam.
Abstract
Description
- This invention relates to a steam delivery plate for a steam iron comprising the features pointed out in the precharacterizing part of the claim. Such a steam iron is for example described in FR-A-2490255.
- Two designs of the steam delivery plate prevail in prior irons which are differentiated basically by a different layout of the steam delivery holes, being respectively distributed throught the plate or concentrated in an area proximate the plate tip.
- The plates having their holes evenly distributed suit best the ironing of fabrics which are better served by a relatively slow penetration of the steam through their fibers, and no setting of the fibers at a high temperature.
- On the other hand, plates having their holes concentrated toward the tip are characterized by a relatively high steam outflow velocity and higher fiber setting capability by those plate areas which are not apertured and are, therefore, hotter.
- It will be recognized, therefore, that before one buys an iron, one should decide on its primary intended use and select the most appropriate type of plate. The decision made purchase is substantially an irrevocable one.
- Further, the need arises occasionally to use an iron in two different modes: a first mode of conventional ironing with the iron resting on and running across a fabric being ironed in order to flatten out any creases by the combined action of heat, steam, and the slight pressure exerted by the operator;
a second mode in that of having the fabric fluffed by the sole action of steam. - In the latter case, the iron is held in a substantially upright position and moved nearer the fabric so as to direct the steam jets from the steam delivery holes onto it.
- The plates which have their steam delivery holes gathered more toward the tip suit fabric flutting best because of the steam being delivered at a higher outflow velocity thereby. However, such irons may not be the preferred ones for primary ironing requirements.
- The problem underlying this invention is to provide a steam delivery plate for irons which affords an ability to select each time the steam delivery mode, either concentrated or distributed, which suit best the intended purpose.
- This problem is solved by a steam delivery plate as indicated having the characterizing features pointed out in the claim.
- The features and advantages of this invention will be more clearly apparent from the following detailed description of a preferred, but not exclusive, embodiment thereof, to be read in conjunction with the accompanying illustrative drawings, where:
- Figure 1 is an exploded, longitudinal section view taken on the plane I-I in Figures 2 and 3, showing a steam delivery plate according to this invention;
- Figure 2 is a top plan view of a base element for the plate of Figure 1;
- Figure 3 is a top plan view of a cover for the plate shown in the preceding Figures;
- Figure 4 is a sectional view taken through the cover of Figure 3 along the line IV-IV;
- Figure 5 is a bottom plan view of the same cover as shown in the preceding Figures; and
- Figure 6 is a bottom plan view of a detail of the plate shown in the preceding Figures.
- With reference to the drawing figures, a steam delivery plate 1 for steam irons comprises essentially a
base element 2 and acover 3. - The
base element 2 has a substantially flat surface forming the ironing sole piece 4. The sole piece 4 has a substantially triangular shape with arcuateoblique sides - The
element 2 is provided, on the opposite side from the sole piece 4, with a capping 6 standing proud of a base plane 7. From the plane 7, there extends a firstupright rib 8 of continuous closed loop configuration having twosections 8a,b running at a short distance from theoblique sides 4a,b, and athird section 8c running parallel to the base 4c. - A
second rib 9 connects to thesection 8c which has an inverted "U" configuration; athird rib 10 extends between thesections - All the
ribs groove 11 for accommodating a sealinggasket 12 intervening to form a tight fit between thebase element 2 and thecover 3. - Defined between the
ribs base element 2, are a steam intake andsuperheating chamber 15 and two steam delivery chambers, respectively indicated at 16 and 17. - The
chamber 16 is located proximate the tip of the plate 1, whilst thechamber 17 extends around thesteam intake chamber 15 horseshoe fashion. All of the above chambers, 15, 16 and 17, have their tops closed by thecover 3. - Inside each of the
steam delivery chambers elevations 20 are provided which are substantially frustoconical in shape and through-penetrated axially by asteam delivery hole 21. Theholes 21 extend through thebase element 2 and open into the sole piece 4 with a flaring end. - The
cover 3 has a first, essentiallyflat surface 23 whose outline mates with the upper edge of therib 8, and is through-penetrated by fourholes 24 intended for fastening said cover to thebase element 2 by means of screw fasteners, not shown, threadably engaged inseats 25. - From the
surface 23 there extend, at the steam intake andsuperheating chamber 15, a plurality of projections in the form offrustoconical nipples 26 which, with the plate 1 in its assembled state, are enclosed within theaforesaid chamber 15. - Also at the
chamber 15, asteam intake conduit 28 is arranged to open through thecover 3. - On the remote side from the
surface 23, thecover 3 has anelectric resistance heater 30 embedded therein for heating the plate 1. By locating theresistance heater 30 on thecover 3 rather than the base element of the plate, a more uniform distribution of heat across the sole piece 4 can be obtained with no overheated spots on the latter. - In addition, this results in the
nipples 26 becoming superheated and acting as heat accumulators to vaporize any water droplets formed within thechamber 15 and avoid their being ejected out of thedelivery holes 21. This effect can be made most effective by arranging the nipples at short short distances and offset from one another. - Secured between the legs of the
resistance heater 30 are acaptive screw 31 and anabutment peg 32 for mounting a thermostat. Also provided aretangs 33 for anchoring the plate 1 on a body, not shown, of the iron. - In the vicinity of the tip of the
cover 3, there is formed achannel 35 which is closed at the top by aplate 36, with the interposition of a sealinggasket 37. Thechannel 35 communicates, viapassageways 38, with thesteam intake chamber 15, and via tworespective passageways delivery chambers channel 35 forms therefore a steam supply conduit to the twodelivery chambers - Formed in the
channel 35 at thepassageway 39, is aseat 41 adapted to receive asmall pillar 42 which extends at right angles from theplate 36. A right-angle bore 43 is formed in that pillar. - The free edge of the
bore 43 is flared to provide a detent for a ball shutter 44 which is freely movable in thechannel 35 between thepassageway 40 and thepillar 42. Thus, thepillar 42 and ball 44 form a valving means for shutting off the supply of steam to thechamber 17. - The ironing appliance of this invention operates as follows.
- Steam, as generated for example in a separate boiler, is supplied through the
intake conduit 28 to the intake andsuperheating chamber 15. Inside this chamber, any suspended water droplets are further vaporized by the heat stored in thenipples 26. - Through the
passageway 38, the steam is led into the delivery conduit formed by thechannel 35 and hence, as the plate is held in a horizontal condition, to both delivery chambers, 16 and 17. In fact, under this condition, the ball 44 will be floating inside thechannel 35 and leave thebore 43 uncovered and thepassage 39 open. - With the plate 1 in a substantially vertical orientation, the ball 44 will abut the
pillar 32 and settle on the free edge of thebore 43. - The
passageway 39 of the steam delivery conduit is now blocked to shut off the supply of steam to thedelivery chamber 17. - Accordingly, steam can only be supplied through the
delivery chamber 16 and its respective delivery holes. - By returning the plate 1 to its horizontal orientation, the ball 44 will uncover the
bore 43 if the supply of steam to the plate is interrupted. Otherwise, if the supply of steam is maintained, the steam pressure holds the ball 44 engaged with the free edge of thebore 43, and the steam, even with the plate horizontal, will be only supplied through the holes provided in thedelivery chamber 16. - It has been found preferable to provide said
chamber 16 with a smaller number of steam delivery holes than the number of the corresponding holes provided in thedelivery chamber 17. This expedient has been adopted to both increase the steam outflow velocity through the delivery holes during the steaming operation and to permit ironing with the delivery of steam concentrated around the plate tip. - The plate of this invention affords several advantages over conventional plates. Firstly, the possibility has been significantly enhanced of using an ironing appliance equipped with this plate for steaming operations. Secondly, the sole piece of the plate according to the invention is at a uniformly distributed temperature as achieved by mounting the resistance heater on the cover.
- Further, this plate can deliver steam which is almost free of any suspended water droplets.
- Understandably, the steam delivery plate disclosed hereinabove is equally effective when supplied with steam from a separate boiler, and with water for in situ generation of steam.
Claims (1)
- A steam delivery plate for a steam iron comprising an electric resistance heater (30), a sole piece (4) apertured with a number of steam delivery holes (21), a plurality of ribs (8,9,10) standing on the opposite side from said sole piece (4), and a cover (3) in tight relationship with said ribs (8,9,10) bounding steam chambers and circulation conduits in cooperation therewith, at least two separate steam delivery chambers (16,17), defined by the said ribs (8,9,10), each of said chambers being apertured with a set of said delivery holes (21), said steam delivery chambers (16,17) being arranged to communicate with each other through a delivery conduit (35), characterized in that said delivery conduit is provided with an on/off valving means (44) comprising a ball shutter (44) movable in said conduit (35) between a first or open position corresponding to a substantially horizontal lay of said plate, whereby said chambers (16,17) are communicated with each other, and a second or closed position corresponding to a substantially vertical lay of said plate, whereby said conduit (35) is shut off.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8888830229T DE3872384T2 (en) | 1988-05-20 | 1988-05-20 | A SOLE FOR THE SUPPLY OF STEAM FOR STEAM IRON. |
EP88830229A EP0342302B1 (en) | 1988-05-20 | 1988-05-20 | A steam delivery plate for steam irons |
AT88830229T ATE77665T1 (en) | 1988-05-20 | 1988-05-20 | A STEAM SUPPLY INSOLE FOR STEAM IRONS. |
ES198888830229T ES2033003T3 (en) | 1988-05-20 | 1988-05-20 | STEAM OUTLET PLATE FOR STEAM IRONS. |
GR920401738T GR3005411T3 (en) | 1988-05-20 | 1992-08-11 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP88830229A EP0342302B1 (en) | 1988-05-20 | 1988-05-20 | A steam delivery plate for steam irons |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0342302A1 EP0342302A1 (en) | 1989-11-23 |
EP0342302B1 true EP0342302B1 (en) | 1992-06-24 |
Family
ID=8200638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88830229A Expired - Lifetime EP0342302B1 (en) | 1988-05-20 | 1988-05-20 | A steam delivery plate for steam irons |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0342302B1 (en) |
AT (1) | ATE77665T1 (en) |
DE (1) | DE3872384T2 (en) |
ES (1) | ES2033003T3 (en) |
GR (1) | GR3005411T3 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK0999303T3 (en) * | 1998-11-04 | 2003-09-15 | Esse 85 S R L | Professional steam iron |
DE20013529U1 (en) * | 2000-08-05 | 2000-10-19 | Eugster Frismag Ag Romanshorn | Steam ironing system with a stationary steam generator |
FR2815649B1 (en) | 2000-10-24 | 2003-01-03 | Rowenta Werke Gmbh | IRON WITH STEAM SURPLUS FUNCTION |
ITMO20040021A1 (en) * | 2004-01-30 | 2004-04-30 | Duemme S P A | PERFECTED STEAM IRON |
CN213061454U (en) * | 2020-06-23 | 2021-04-27 | 漳州灿坤实业有限公司 | Electric heating disc structure of iron and iron |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2425598A (en) * | 1944-05-30 | 1947-08-12 | Philco Corp | Steam electric iron |
DE3034456A1 (en) * | 1980-09-12 | 1982-05-06 | Robert Krups Stiftung & Co KG, 5650 Solingen | STEAM IRON |
-
1988
- 1988-05-20 AT AT88830229T patent/ATE77665T1/en not_active IP Right Cessation
- 1988-05-20 DE DE8888830229T patent/DE3872384T2/en not_active Expired - Lifetime
- 1988-05-20 EP EP88830229A patent/EP0342302B1/en not_active Expired - Lifetime
- 1988-05-20 ES ES198888830229T patent/ES2033003T3/en not_active Expired - Lifetime
-
1992
- 1992-08-11 GR GR920401738T patent/GR3005411T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
DE3872384T2 (en) | 1992-12-10 |
GR3005411T3 (en) | 1993-05-24 |
ES2033003T3 (en) | 1993-03-01 |
DE3872384D1 (en) | 1992-07-30 |
EP0342302A1 (en) | 1989-11-23 |
ATE77665T1 (en) | 1992-07-15 |
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