EP0674037A1 - Fer à repasser avec soupape goutte à goutte - Google Patents

Fer à repasser avec soupape goutte à goutte Download PDF

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Publication number
EP0674037A1
EP0674037A1 EP95100380A EP95100380A EP0674037A1 EP 0674037 A1 EP0674037 A1 EP 0674037A1 EP 95100380 A EP95100380 A EP 95100380A EP 95100380 A EP95100380 A EP 95100380A EP 0674037 A1 EP0674037 A1 EP 0674037A1
Authority
EP
European Patent Office
Prior art keywords
steam
valve
limiting
valve rod
movement
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
Application number
EP95100380A
Other languages
German (de)
English (en)
Other versions
EP0674037B1 (fr
Inventor
Albert Ostermaier
Mauro Biancalani
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.)
BSH Hausgeraete GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0674037A1 publication Critical patent/EP0674037A1/fr
Application granted granted Critical
Publication of EP0674037B1 publication Critical patent/EP0674037B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
    • D06F75/18—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the water being fed slowly, e.g. drop by drop, from the reservoir to a steam generator

Definitions

  • the present invention relates to a steam iron with a housing, an iron soleplate and a drip valve, which connects a water reservoir to an evaporator chamber, the drip valve comprising a valve seat which is fixed to the housing and an axially displaceable valve rod which cooperates therewith, and the valve rod via a limiting active surface of a quantity of steam -Limiting device and is displaceable over an actuating surface of a steam amount adjusting device.
  • Such an iron is disclosed in DE 41 33 255.A1, the drip valve controlling the flow from the water reservoir to the evaporator chamber formed on an iron soleplate.
  • the drip valve has a threaded device, by means of which the drip valve can be controlled.
  • the thread device consists of a first ramp, on which a cam follower formed on the valve rod is supported.
  • the first ramp is surrounded concentrically by a second ramp, which is controlled by adjusting elements with a temperature control button that controls the temperature of the soleplate is adjustable in height compared to the first ramp.
  • the second ramp can also be brought into engagement with the cam follower, the slope of the second ramp being formed by a non-self-locking threaded section which is raised via the first ramp when the temperature control knob is set on a temperature which is too cold to generate steam.
  • the cam follower is no longer in operative connection with the first, but only with the second ramp, as a result of which the cam follower slides down the second ramp in such a way that the drip valve closes automatically.
  • the disadvantage here is that the drip valve can be influenced via the temperature control knob and not via a temperature measured on the soleplate, that the movement of the valve rod cannot be decoupled from the movement of the control knob for the amount of steam and thus the drip valve closed due to the low temperature Adjustment button can be opened at least for a short time by the operator, and finally that the operator always has to laboriously readjust the amount of steam each time, if the temperature of the soleplate is set too low, the cam follower has slid down the second ramp and even after the temperature has not increased There is an active connection with the first ramp.
  • DE 36 03 229.A1 discloses a drip valve for steam irons, in which the valve rod is fastened in a valve rod carrier which is axially displaceable but is non-rotatably held in an actuation button.
  • a spring is arranged between the actuation button and the valve rod carrier, which biases the valve rods in the axial direction into the closed position against the valve seat.
  • the valve rod support has at its lower end a cam follower which extends outwards in the radial direction, which cooperates with an end face of a cam ring surrounding the valve rod.
  • the cam ring is attached to the upper end of an actuating part, the lower end of which rests on bimetallic elements which, depending on the temperature of the vaporization chamber of the steam iron, lift the cam ring and thus the valve rod carrier more or less in such a way that at an insufficient temperature for the evaporation of the water Evaporation chamber the valve rod rests on the valve seat and the drip valve closes.
  • a sufficient working temperature of the soleplate is reached, the valve rod is lifted off the valve seat and the drip valve is opened.
  • the disadvantage here is that because of the superposition of the valve rod movement as a result of the actual valve rod movement and that of the valve rod carrier, relatively long valve rod paths are possible.
  • the guidance of the valve rod and the design of the valve rod tip and the valve rod opening therefore require many individual parts and are complex and expensive.
  • the movement of the valve rod cannot be decoupled from the movement of the steam volume control knob, which results in increased wear.
  • Another problem is that the operator cannot specify a constant amount of steam. Because if the temperature of the soleplate changes, the position of the valve rod carrier changes and thus the amount of steam set.
  • DE 41 33 256.A1 discloses a drip valve for steam irons, which consists of a valve seat and one that interacts with it Valve rod consists, wherein the drip valve is supported by a cam follower on a first and a second housing-fixed ramp, the first ramp being connected via an actuating element to a temperature actuator (bimetal spring) and being controllable between a flow position and a closed position.
  • the two ramps have oppositely rising cam tracks that cross each other.
  • the second cam track has a slope which is formed by a non-self-locking thread.
  • the cam follower is always moved against the first ramp, so that when the first ramp moves down due to the cooling of the bimetal, the cam follower is now supported by the second ramp and, because of the non-self-locking thread engagement, is automatically activated is rotated so that the drip valve comes into its closed position.
  • the temperature-controlled cam track always controls the cam follower in such a way that - depending on the temperature of the soleplate - the passage cross section at the valve seat is also correspondingly large or small, depending on the position of the second ramp. It is irrelevant which position the control knob has assumed, since if it also moves upwards by turning the control knob on the cam track, it will return to its starting position as soon as the control knob is released.
  • the cam follower is therefore always at the intersection of the cam tracks.
  • the disadvantage here is that the drip valve can be opened briefly by the operator due to the lack of decoupling of the valve rod and rotary knob, even though the temperature of the soleplate is too low.
  • Another disadvantage is that the amount of steam or the degree of opening of the drip valve alone is determined by the temperature of the soleplate and cannot be further reduced by the operator.
  • the object of the present invention is therefore to provide a generic iron which eliminates the above disadvantages.
  • valve rod is prestressed in the opening direction and in that the active surfaces of the steam quantity limiting device and the steam quantity adjusting device are arranged in such a way that the active surface set in each case corresponding to a smaller opening of the drip valve limits the opening movement of the valve rod.
  • This solution has the advantage that the movement of the valve rod is decoupled from the movement of the steam quantity adjusting device when the temperature is too low.
  • the steam quantity limiting device specifies the maximum possible steam quantity at the respective temperature, which can be reduced by the operator via the steam quantity adjusting device to ironing without steam. Setting a quantity of steam that is too high for the temperature via the steam quantity adjusting device is ineffective, since this steam quantity is limited to the maximum permissible steam quantity by the steam quantity limiting device.
  • the steam quantity limiting device comprises a bimetallic spring deflected as a function of the temperature of the soleplate and a limiting actuating element which transfers its temperature-dependent movement to the limiting active surface.
  • the steam quantity limit is therefore directly dependent on the measured variable of interest, namely the temperature of the soleplate, and not on an indirectly relevant control variable, namely the setting of the temperature control knob.
  • the limiting actuating member advantageously lies on the bimetal spring.
  • the limiting actuator is biased by an auxiliary spring in the closing direction and is therefore always on the bimetal spring. A form-fitting, possibly impairing the measuring properties of the bimetal spring fastening of the limiting actuating member on the bimetal spring is therefore unnecessary.
  • the steam quantity limiting device comprises an adjusting slide attached to the housing and an adjusting actuator which transmits the sliding movement to the adjusting active surface.
  • the amount of steam can be changed in a user-friendly manner only with the operator's thumb, while the operator moves the iron with the hand and the rest of the fingers using the handle on the item being ironed.
  • the actuating element has, at one end section, a self-locking actuating surface which is oblique to its sliding movement and which converts the horizontal movement of the slide into a vertical movement of the valve rod.
  • the amount of steam is advantageously infinitely adjustable, possibly via a few rest positions, with the adjusting slide. Due to the design of the actuating surface as self-locking, the positioning of the slide determines the quantity of steam below the limit position of the limiting active surface, which is predetermined by the temperature. The bias of the valve rod in the opening direction, however, can not cause a horizontal movement of the control slide.
  • Actuator formed a cleaning active surface for cleaning the valve opening in connection with the control active surface.
  • a hook-shaped extension with the limiting active surface is formed on the upper end section of the limiting actuator. This has the advantage that no specially dimensioned ramps with, for example, non-self-locking threaded sections are required.
  • 1 denotes a steam iron.
  • This has a housing 2 and an iron soleplate 3. To move the steam iron 1, this is provided with a handle 4.
  • a steam chamber 5 is attached to the soleplate 3, which is closed with a steam chamber cover 5 '.
  • a bimetallic spring 7 is fastened to the steam chamber 5 by means of a fastening screw 6.
  • the bimetal spring 7 indirectly measures the temperature of the soleplate 3 via the thermal coupling by the screw 6 to the steam chamber 6.
  • the bimetal spring 7 is deflected depending on this temperature.
  • the bimetal spring 7 is assigned a steam quantity limiting device 8 such that it follows the movement of the bimetal spring 7 or its tip.
  • the steam quantity limiting device 8 comprises a limiting actuator 9, which is guided in a guide 10 during the vertical movement.
  • the limiting actuator 9 rests on the bimetallic spring 7 and is biased against the movement of the bimetallic spring with increasing temperature (dashed line).
  • an auxiliary spring 12 is supported on an auxiliary spring seat 11 fixed to the housing and presses against an auxiliary spring holder 13 formed on the limit actuating element 9.
  • the bimetallic spring 7 is substantially stiffer than the auxiliary spring 12.
  • a hook-shaped extension is on the upper end portion of the limit actuating element 9 140 formed with planes a limiting effective surface 14.
  • a drip valve 15 comprises a valve seat 16 fixed to the housing with a valve opening 17 and a valve rod 19 provided with a valve needle 18.
  • the valve rod 19 is guided over a housing-fixed guide, the valve needle 18 closes the valve opening 17. This connects a water reservoir 24 to the steam chamber 5.
  • a prestressing spring seat 21 is supported via a prestressing spring seat 20 formed thereon and presses against a prestressing spring holder 22 of the valve stem 19.
  • This bias spring bracket 22 is on a molded upper end of the valve rod valve rod head 23.
  • the auxiliary spring 12 is stiffer than the biasing spring 21, so that the limiting actuator 9 can follow the movement of the bimetallic spring 7 at a decreasing temperature, or always rests on it.
  • valve rod 19 or the valve rod head 23 follows the vertical movement of the limiting actuating element 9 or the limiting active surface 14 as the temperatures rise.
  • the soleplate temperature measured via the bimetal spring 7 and converted into a vertical path accordingly gives the maximum opening of the drip valve 15 above the level described vertical movement of the valve rod 19 or the valve needle 18 before.
  • a steam quantity adjusting device 25 is assigned to the housing 2 of the steam iron 1.
  • This comprises an adjusting slide 26, an actuating element 27 and an adjusting active surface 28.
  • the adjusting slide 26 is attached to the housing 2 as a handle which can be shifted continuously over three latching positions, each corresponding to a certain amount of steam.
  • the adjusting slide 26 is connected to the hook-shaped actuating element 27, which is wedge-shaped at its front end section and forms the actuating surface 28.
  • the horizontal movement of the slide valve 26 (see arrow) can be converted into the vertical movement of the valve rod 19.
  • the slope of the actuating surface 28 is dimensioned such that the force of the biasing spring 21 is not sufficient to horizontally shift the actuating slide 26 when the actuating surface 28 touches the valve rod head 23.
  • a portion of the valve rod head 23, which may contact the actuating surface 28, is rounded off at its upper end portion to reduce the friction that occurs.
  • the hook-shaped Approach 140 of the steam quantity limiting device 8 is arranged with respect to the valve rod head 23 or its vertical movement next to the end section of the actuating element 27 equipped with the actuating active surface 28.
  • the two active surfaces 14, 28 must therefore be brought into any possible vertical position independently of one another.
  • the active surface 14, 28 which is set in each case corresponding to a smaller opening of the drip valve 15 limits the opening movement of the valve rod 19 as a result of the spring force of the biasing spring 21.
  • FIG 2 a second embodiment of the actuator 27 is shown.
  • a cleaning active surface 29 adjoins the active active surface 28, which runs on an inclined plane, the gradient of which increases rapidly.
  • a long vertical path of the valve needle 18 is possible over a short path of the slide valve 26.
  • the puncturing of the valve opening 17 through the valve needle 18 over a large length causes the drip valve 15 or the valve opening 17 to be cleaned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Lift Valve (AREA)
EP95100380A 1994-03-25 1995-01-12 Fer à repasser avec soupape goutte à goutte Expired - Lifetime EP0674037B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4410408A DE4410408C2 (de) 1994-03-25 1994-03-25 Dampfbügeleisen mit Tropfventil
DE4410408 1994-03-25

Publications (2)

Publication Number Publication Date
EP0674037A1 true EP0674037A1 (fr) 1995-09-27
EP0674037B1 EP0674037B1 (fr) 1999-03-24

Family

ID=6513855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100380A Expired - Lifetime EP0674037B1 (fr) 1994-03-25 1995-01-12 Fer à repasser avec soupape goutte à goutte

Country Status (3)

Country Link
EP (1) EP0674037B1 (fr)
DE (2) DE4410408C2 (fr)
ES (1) ES2132436T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018992A1 (fr) * 1996-10-31 1998-05-07 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Commutateur mecanique a regulation thermique
US5829175A (en) * 1996-09-20 1998-11-03 Black & Decker Inc. Steam iron with all temperature steam production
WO2007072145A1 (fr) * 2005-12-22 2007-06-28 Rowenta Werke Gmbh Fer a repasser comprenant une vanne commandee par un element thermiquement deformable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705015B4 (de) * 1997-02-10 2005-01-13 BSH Bosch und Siemens Hausgeräte GmbH Elektrisches Dampfbügeleisen
DE19705181B4 (de) * 1997-02-11 2004-12-23 BSH Bosch und Siemens Hausgeräte GmbH Bügeleisen mit Wassertank
DE29705092U1 (de) * 1997-03-20 1997-06-05 Rowenta-Werke GmbH, 63071 Offenbach Dampfbügeleisen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853814A (en) * 1956-12-27 1958-09-30 Morris D Brandler Steam iron
US2981017A (en) * 1959-08-20 1961-04-25 Merrill M Kistner Automatic water metering for steam iron
DE3603229A1 (de) * 1985-02-04 1986-08-07 Oficina de Investigacion Agrupada S.A., Eibar, Guipuzcoa Tropfventil fuer dampfbuegeleisen
DE4133256A1 (de) * 1991-10-08 1993-04-15 Braun Ag Tropfventil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL63487C (fr) * 1941-03-08 1900-01-01
US2908092A (en) * 1955-10-10 1959-10-13 Proctor Mfg Corp Steam iron
US3986282A (en) * 1975-04-28 1976-10-19 General Electric Company Steam iron
DE4133255A1 (de) * 1991-10-08 1993-04-15 Braun Ag Tropfventil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853814A (en) * 1956-12-27 1958-09-30 Morris D Brandler Steam iron
US2981017A (en) * 1959-08-20 1961-04-25 Merrill M Kistner Automatic water metering for steam iron
DE3603229A1 (de) * 1985-02-04 1986-08-07 Oficina de Investigacion Agrupada S.A., Eibar, Guipuzcoa Tropfventil fuer dampfbuegeleisen
DE4133256A1 (de) * 1991-10-08 1993-04-15 Braun Ag Tropfventil

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5829175A (en) * 1996-09-20 1998-11-03 Black & Decker Inc. Steam iron with all temperature steam production
WO1998018992A1 (fr) * 1996-10-31 1998-05-07 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Commutateur mecanique a regulation thermique
WO2007072145A1 (fr) * 2005-12-22 2007-06-28 Rowenta Werke Gmbh Fer a repasser comprenant une vanne commandee par un element thermiquement deformable
FR2895421A1 (fr) * 2005-12-22 2007-06-29 Rowenta Werke Gmbh Fer a repasser comprenant une vanne commandee par un element thermiquement deformable
US7644525B2 (en) 2005-12-22 2010-01-12 Rowenta Werke Gmbh Iron comprising a valve controlled by a thermally deformable element

Also Published As

Publication number Publication date
ES2132436T3 (es) 1999-08-16
DE4410408C2 (de) 1996-10-24
DE4410408A1 (de) 1995-09-28
EP0674037B1 (fr) 1999-03-24
DE59505402D1 (de) 1999-04-29

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