EP0674037B1 - Dampfbügeleisen mit Tropfventil - Google Patents

Dampfbügeleisen mit Tropfventil Download PDF

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Publication number
EP0674037B1
EP0674037B1 EP95100380A EP95100380A EP0674037B1 EP 0674037 B1 EP0674037 B1 EP 0674037B1 EP 95100380 A EP95100380 A EP 95100380A EP 95100380 A EP95100380 A EP 95100380A EP 0674037 B1 EP0674037 B1 EP 0674037B1
Authority
EP
European Patent Office
Prior art keywords
steam
valve
setting
limiting
valve rod
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
EP95100380A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0674037A1 (de
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
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0674037A1 publication Critical patent/EP0674037A1/de
Application granted granted Critical
Publication of EP0674037B1 publication Critical patent/EP0674037B1/de
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 containing a water reservoir with an evaporator chamber connects, the drip valve a housing-fixed valve seat and cooperating with this, axially displaceable valve rod, and wherein the valve rod over a limiting effective area of a steam quantity limiting device and slidable over a control surface of a steam quantity control device is.
  • the drip valve Flow from the water reservoir to that formed on an iron soleplate Evaporator chamber controls.
  • the drip valve has a threaded device through whose rotation the drip valve is controllable.
  • the thread device consists of a first ramp on which there is a cam follower formed on the valve rod supports.
  • the first ramp is concentrically surrounded by a second ramp, the via control 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 is also engageable with the cam follower, the slope of the second Ramp is formed by a non-self-locking threaded section that at Position the temperature control knob on a cold to generate steam Temperatures are raised above the first ramp.
  • the cam follower is not like this more in operative connection with the first, but only with the second ramp, whereby the cam follower slides down on the second ramp such that the drip valve closes automatically.
  • the disadvantage here is that the drip valve via the temperature control knob and cannot be influenced by a temperature measured on the soleplate is that the movement of the valve stem does not differ from the movement of the adjusting knob for the amount of steam can be decoupled and therefore because of the low temperature Closed drip valve opened at least briefly by the operator using the control button and finally that the operator always has the amount of steam cumbersome to reset if due to a set too low Temperature of the soleplate of the cam follower slid down the second ramp is and not even in operative connection with the after the increase in temperature 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, however is rotatably held in an actuation button. It is between the button and the valve rod carrier is arranged a spring which the valve rods in Biases axially in the closed position against the valve seat.
  • the valve rod carrier has at its lower end a radially outwardly extending Cam follower on that with an end face of a surrounding the valve rod Cam ring interacts.
  • Whose front surface has the bearing surface a changing height over the circumference of the cam ring to the spring in Depending on the rotational position of the valve rod carrier to compress more or less and to determine the opening position of the valve rod.
  • the lower one End rests on bimetal elements depending on the temperature of the evaporation chamber the steam iron the cam ring and thus the valve rod carrier raise more or less in such a way that at a to evaporate the Water insufficient temperature of the evaporation chamber on the valve rod the valve seat rests and the drip valve closes.
  • the valve rod carrier raise more or less in such a way that at a to evaporate the Water insufficient temperature of the evaporation chamber on the valve rod the valve seat rests and the drip valve closes.
  • the valve rod from the valve seat lifted off and the drip valve opened.
  • the disadvantage here is that because of the overlay 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 possible are.
  • 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.
  • valve rod is not from the movement of the Steam volume control button can be decoupled, which results in increased wear Has.
  • Another problem is that the operator does not have a constant amount of steam can be specified. Because when the temperature of the soleplate changes, it changes the position of the valve stem support and thus the set position Amount of steam.
  • DE 41 33 256.A1 discloses a drip valve for steam irons, which consists of a Valve seat and a valve rod interacting with it, wherein the drip valve via a cam follower on a first and a second fixed to the housing Ramp supports, the first ramp via an actuator with a Temperature actuator (bimetallic spring) is connected and between a flow position and a closed position is controllable.
  • the two ramps point in opposite directions rising cam tracks that cross each other.
  • the second one Cam track on a slope formed by a non-self-locking thread becomes.
  • the second ramp and the non-self-locking thread make the Cam follower always moves against the first ramp so that when the first Ramp moved down due to cooling of the bimetal, the cam follower from the second ramp is supported and due to the non-self-locking thread engagement is rotated so automatically that the drip valve in its closed position reached.
  • the temperature-controlled cam track always controls the cam follower so that - according to the temperature of the soleplate - also accordingly the passage cross-section at the valve seat is large or correspondingly small, depending on the position of the second ramp. It does not matter which position the Adjustment knob has taken, since this, if it is also by turning the adjustment knob drives up the cam track, then goes back to its starting position, as soon as the control button is released. So the cam follower is always at the intersection of the cam tracks.
  • the disadvantage here is that the drip valve due to the lack of decoupling The valve stem and rotary knob can be opened briefly by the operator, although the The soleplate temperature is too low.
  • Another disadvantage is that the amount of steam or the degree of opening of the drip valve solely by the temperature of the soleplate is determined, and can not be further reduced by the operator.
  • the object of the present invention is therefore to provide a generic iron, that eliminates the above disadvantages.
  • valve rod in the opening direction is biased and that each movement of the valve rod in the opening direction limited by that of the two independently movable active surfaces whose position corresponds to a smaller amount of steam set with the valve rod.
  • This solution has the advantage that the movement of the valve rod is too low temperature decoupled from the movement of the steam quantity adjusting device is.
  • the steam quantity limiting device gives the at the respective temperature maximum possible amount of steam, which is given by the operator via the steam amount setting device until ironing can be reduced without steam.
  • An attitude one too large a quantity of steam for the temperature via the steam quantity adjusting device is ineffective because this amount of steam through the steam amount limiting device is limited to the maximum permissible amount of steam.
  • the steam quantity limiting device includes a depending on the temperature of the Soleplate deflected bimetal spring and its temperature-dependent movement limiting actuator transmitting to the limiting effective area. Consequently the steam quantity limitation is directly dependent on the measured variable of interest, namely the temperature of the soleplate, and not of an indirectly interesting one Manipulated variable, namely the setting of the temperature control knob.
  • the limiting actuator is on the Bimetal spring on.
  • the limit actuator is preferably over an auxiliary spring is biased in the closing direction and is therefore always on the bimetal spring on. A form-fitting, possibly impairing the measuring properties of the bimetal spring Attachment of the limit actuator to the bimetal spring is therefore unnecessary.
  • the steam quantity limiting device comprises one on the housing attached slide valve and a sliding movement on the effective surface transmitting actuator.
  • the change in the amount of steam is so user-friendly possible only with the operator's thumb, while the operator is using the Hand and the rest of the fingers using the handle on the iron emotional.
  • the actuator has one End section a self-locking control surface oblique to its sliding movement on that the horizontal movement of the slide in a vertical movement of the Relocates valve rod.
  • the amount of steam is advantageously infinitely variable, possibly over some Locking positions, adjustable with the adjusting slide.
  • a cleaning surface for cleaning the valve opening molded in the actuator Connection to the control surface is a cleaning surface for cleaning the valve opening molded.
  • the limit actuating member is at the upper end section a hook-shaped approach with the limiting effective area molded. This has the advantage that no specially dimensioned ramps are used for example, non-self-locking threaded sections is required.
  • 1 denotes a steam iron.
  • This has a housing 2 and an iron soleplate 3. To move the steam iron 1, this is with a Provide handle 4.
  • a steam chamber 5 is attached, which with a steam chamber cover 5 'is closed.
  • a bimetallic spring 7 measures indirectly via the thermal coupling through the screw 6 to the steam chamber 6 the temperature of the soleplate 3. Depending on this temperature, the bimetal spring 7 deflected.
  • the bimetal spring 7 is a steam quantity limiting device 8 assigned such that this the movement of the bimetallic spring 7 or their Top follows.
  • the steam quantity limiting device 8 comprises a limiting actuator 9, which is guided in a guide 10 during the vertical movement.
  • the Limit actuator 9 rests on the bimetallic spring 7 and is opposed the movement of the bimetallic spring with increasing temperature (dashed curve) biased.
  • an auxiliary spring is supported on an auxiliary spring seat 11 fixed to the housing 12 and presses against a molded on the limit actuator 9 Auxiliary spring holder 13.
  • the bimetal spring 7 is much stiffer than the auxiliary spring 12.
  • At the upper end portion of the limit actuator 9 is a hook-shaped projection 140 formed with a planar effective surface 14.
  • a drip valve 15 comprises a valve seat 16 which is fixed to the housing and has 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.
  • At the upper end portion of the guide of the valve rod 19 is supported on it molded bias spring seat 20 from a bias spring 21 against a bias spring bracket 22 of the valve rod 19 presses.
  • This bias spring bracket 22 is on a valve rod head 23 integrally formed on the upper end of the valve rod molded.
  • the auxiliary spring 12 is stiffer than the bias spring 21, so that the limit actuator 9 at a decreasing temperature of movement of the Bimetal spring 7 can follow, or always rests on it.
  • valve rod follows 19 or the valve rod head 23 with increasing temperatures of the vertical movement the limiting actuator 9 or the limiting effective surface 14.
  • 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 about the vertical movement of the valve rod 19 or the valve needle just described 18 before.
  • the housing 2 of the steam iron 1 is a steam quantity adjusting device 25 assigned.
  • This includes an adjusting slide 26, an actuator 27 and an actuating surface 28.
  • the adjusting slide 26 is more than three Rest positions, each corresponding to a certain amount of steam, continuously on Housing 2 slidable handle attached to the housing 2.
  • the setting slide 26 is connected to the hook-shaped actuator 27, which at its front End portion is wedge-shaped and forms the actuating surface 28. So is the horizontal movement of the adjusting slide 26 (see arrow) into the vertical movement the valve rod 19 can be implemented.
  • the pitch of the effective surface 28 is dimensioned such that the force of the bias spring 21 is insufficient when touching the Actuating surface 28 with the valve rod head 23 to the slide valve 26 horizontally move.
  • a partial section of the valve rod head 23, which may be the actuating surface 28 is to reduce the friction occurring at its upper end portion rounded.
  • the hook-shaped extension 140 of the steam quantity limiting device 8 is with respect to the valve rod head 23 or its vertical movement in addition to the end section of the actuating element equipped with the actuating active surface 28 27 arranged.
  • the two active surfaces 14, 28 are therefore independent to bring each other into any possible vertical position. Thereby the movement the valve rod 19 in the opening direction due to the spring force of the biasing spring 21 that of the two independently movable active surfaces 14, 28 limited, the position of a smaller set with the valve rod 19 Amount of steam corresponds.
  • FIG 2 a second embodiment of the actuator 27 is shown.
  • To the A cleaning active surface closes in accordance with an inclined plane 29, the slope of which increases rapidly. So is a short way the slide 26 a long vertical path of the valve needle 18 possible. The piercing the valve opening 17 through the valve needle 18 over a long length causes a Cleaning the drip valve 15 or the valve opening 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Lift Valve (AREA)
EP95100380A 1994-03-25 1995-01-12 Dampfbügeleisen mit Tropfventil Expired - Lifetime EP0674037B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6513855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100380A Expired - Lifetime EP0674037B1 (de) 1994-03-25 1995-01-12 Dampfbügeleisen mit Tropfventil

Country Status (3)

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

Families Citing this family (6)

* 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
DE19645102C1 (de) * 1996-10-31 1998-03-05 Inter Control Koehler Hermann Thermisch gesteuerter mechanischer Schalter zur Betätigung eines Ventils
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
FR2895421B1 (fr) 2005-12-22 2008-06-06 Rowenta Werke Gmbh Fer a repasser comprenant une vanne commandee par un element thermiquement deformable

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL63487C (es) * 1941-03-08 1900-01-01
US2908092A (en) * 1955-10-10 1959-10-13 Proctor Mfg Corp Steam iron
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
US3986282A (en) * 1975-04-28 1976-10-19 General Electric Company Steam iron
ES284354Y (es) * 1985-02-04 1986-04-16 Oficina De Investigacion Agrupada,S.A. Disposicion perfeccionada en valvulas accionadas por bimetalpara planchas de vapor
DE4133255A1 (de) * 1991-10-08 1993-04-15 Braun Ag Tropfventil
DE4133256A1 (de) * 1991-10-08 1993-04-15 Braun Ag Tropfventil

Also Published As

Publication number Publication date
DE59505402D1 (de) 1999-04-29
ES2132436T3 (es) 1999-08-16
DE4410408A1 (de) 1995-09-28
EP0674037A1 (de) 1995-09-27
DE4410408C2 (de) 1996-10-24

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