FR2523605A1 - ELECTRICALLY HEATED STEAM IRON WITH WATER INJECTION OF PROJECTION WATER - Google Patents

Abstract

THE INVENTION RELATES TO A STEAM IRON WHICH CAN BE ELECTRICALLY HEATED BY THE HELP OF TUBULAR HEATING BODIES, WITH INJECTION OF SPRAY WATER PRODUCED BY A PUMP INTO THE DRAIN WATER VAPORIZATION SYSTEM TO PRODUCE A PULSE STEAM AND TO EVACUATE THE ADDITIONAL STEAM THROUGH CHANNELS 2 TO THE IRONING SURFACE OF THE BASE 3 OF THE IRON. THE IRON IS CHARACTERIZED IN THAT THE SPRAYING WATER IS INTRODUCED INTO THE VAPORIZATION SYSTEM IN AT LEAST TWO DIFFERENT INJECTION ZONES 4, 5 SPATIALLY SEPARATED FROM ONE ANOTHER AND IN THAT EACH ZONE OF ' INJECTION 4, 5 IS AS CLOSED AS POSSIBLE TO THE HEATING BODY 6.

Description

The present invention relates to a steam iron which can be

  electrically heated by means of tubular heating bodies or tubular radiators, with injection of splash water produced by a panpe into the drip water vaporization system to produce a pulse or shock of vapor and to evacuate the additional steam via channels to the ironing surface of the

footbed of the iron.

  According to the German patent application DE-AS 20 46 656, there is known an electric steam iron having a plate-shaped sole plate, an electric heating element of

  the sole and a water tank placed above the sole.

  The sole is, in this steam iron, a first

  vaporization chamber which is in fluid connection with a labyrinth

  steam rinth that extends to a large n Orb of orifices

  steam outlet provided in the lower surface of the sole.

  From a drip valve, water flows from the feed tank to the first booster and it passes therein, by vaporization, from the liquid state to the state

  In the soleplate, a second steam chamber is provided.

  in which water from the feed tank

  tation can be introduced under pressure using a panpe.

  In the first vaporization chamber of this disc

  known positive, steam is produced continuously, using the drip valve, so as to reach the steam outlet openings that are provided on the lower side of the sole, while water can be sprayed sharply into

  the second spray chamber, if necessary, by injection

  A disadvantage with this known iron is that, due to the injection of additional water into the second steam chamber, heat is extracted in point form in the area of the sole of the iron.

  and the heat distribution on the sole is no longer uniform.

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  This causes an alteration of the ironing result.

  In addition, with this known iron, it is no longer possible to inject into the spray chamber, at intervals of

  quite short times, a little more water for steam generation.

  During the first introduction of water into the zone of the second vaporization chamber, an excessive amount of heat is extracted from the soleplate of the iron, so that the amount of heat necessary for the vaporization of the iron is no longer available. second injection of water and that a heating of ccmplément can not also be assured sufficiently quickly by the body

  This results in drops of water reaching the

  of the steam channel system to the steam outlet openings in the lower surface of the

the soleplate of the iron.

  The object of the invention is therefore to create an electrically heated steam iron in which it is possible to inject spray water several times into the

  soleplate of the iron without the uniform distribution of temn-

  in the soleplate is substantially altered by the injection of water, wherein in addition it is possible to perform several times an injection of water to produce several additional pulses of steam in short successive intervals of time, without the water then comes in the form of drops out of the steam channel system on the lower surface of the iron soleplate.

board.

  This problem is solved in that the water of projection is introduced into the vaporization system in at least two

  different areas of separate spatial injection Ment one of the other

  and that each injection zone is as close together as

possible heating body.

  Due to the distribution of the injection of spray water at different points of the water vaporization system disposed in the soleplate of the iron, only weak

  quantities of heat are extracted from the iron soleplate

  In the vicinity of the injection zones, the uniformity of the temperature distribution is thus obtained throughout the soleplate of the iron, which again results in an improvement of the smoothing effect during the meal-wise process. Thanks to the separation of the injection zones, it is possible to inject spray water at intervals

  about one second, without any water coming out of the steam system.

  on the iron of the iron.

  According to another arrangement of the invention, the projection water outlet orifices are disposed above the electric heating body and each jet of projection water arrives, upon actuation of the pcape, on the surface of

  tubular body of electric heating It ensures a vapor

  more rapid injection of the injected water.

  On the wall of the tubular heating body, the heat necessary for the vaporization of the water is not extracted from the sole of the iron itself, but it is removed from the tubular heating body which can compensate for new

  the extracted heat. Moreover, because of the spraying of

  tion of the water on the heating body, no

  extraction of heat from the zone of the vapor chamber

  drainage, which results in uniformity of

  the amount of base steam produced by the water system

drip.

  According to another arrangement of the invention, there is provided at least one injection point in the zone of connection of the regulator with the soleplate of the iron It thus obtains that the regulator reacts immediately during the production of additional steam and during the injection of spray water into the vaporization system of the soleplate of the iron, in the case where it should, to avoid overheating of the soleplate of the iron, cut the power supply of the heating body Thus, the electric current needed for the generation of the additional heat is provided again again

more quickly to the heating body.

  According to the invention, the vaporization chamber of the system

  Drainage zone and the injection zones are spatially separated from one another by being distributed on the sole of the iron. This results in an even better distribution of the heat throughout the entire soleplate of the iron. to iron, which results in a significant improvement in the efficiency of the iron to

board.

  Other features and advantages of the invention

  will be highlighted, in the rest of the description, given to

  By way of nonlimiting example, and with reference to the accompanying drawings in which: FIG. 1 is a plan view of a soleplate of

  iron with the spray chamber open.

  FIG. 2 is a section of the soleplate of the steam iron according to the cutting line referenced A B on the

figure 1.

  With the aid of the pump 1 represented only schematically

  Only when the water is drawn from the reservoir, not shown, is steamed iron, and is channeled via two separate pipes to the injection zones 4. The water discharge outlets 7, 8 are arranged in the vapor channel 2 in the soleplate 3 of the iron and are placed directly above the

  tubular electric heating body 6 which is incorporated in ::

  In each case, each jet of water of projection joins, in the zone of the steam channel 2, the steam produced continuously in the vaporization chamber, so as to be able to compensate in the manner of faster with the aid of the heating body 6 the heat extracted by the vaporization of the jet of projection water In a quite surprising way,

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  as a result of the injection of spray water into the steam channel 2, the pie deposits existing in the steam channel 2 may detach under the effect of the sudden cooling and, thanks to the sudden increase of volume, they are discharged from the vaporization channel 2 on the lower side of the sole 3 of the iron The injection zone 4 has been shown by way of example in the vicinity innediat of the regulator 9, which allows a feeding fast in the case of an injection of water of projection when this one

  product, while the upper control temperature of the

  9 is exceeded and that the power supply of the body

  heating 6 is temporarily interrupted by the regulator 9.

Claims (4)

IREVENDICATIONS   1 Steam iron that can be heated electrically by means of tubular heating bodies, with injection of projection water produced by a pump (1) into the   drip water vaporization system to produce an impulse   steam and to evacuate the additional steam through channels (2) to the ironing surface of the   sole (3) of the iron, characterized in that the water of pro-   injection is introduced into the vaporization system in at least two different injection zones (4, 5) separated spatially from one another and in that each injection zone (4, 5) is   as close as possible to the heating body (6).   Steam iron according to claim 1,   characterized in that the orifices (7, 8) for producing water outlets   jection are arranged above the electric heating body (6) and in that each projection water jet arrives, upon actuation of the pump (1), on the surface of the tubular body electric heater (6).   Steam iron according to claim 1 or 2, characterized in that at least one injection zone (4) is provided in the connection region of the regulator (9) with the soleplate. (3) iron.   4 Steam iron according to one of the claims   1 to 3, characterized in that the vaporization chamber (10)   drip system and the injection zones (4, 5) are separated   from each other by being spatially distributed in the saemlle (3) iron.