Textiles: ironing or smoothing – Smoothing implements – Flatirons
Reexamination Certificate
1999-07-22
2001-05-22
Izaguirre, Ismael (Department: 3741)
Textiles: ironing or smoothing
Smoothing implements
Flatirons
C219S255000
Reexamination Certificate
active
06233853
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application claims the priority of German Utility Model Application No. 298 13 063.7 filed Jul. 22, 1998 which is incorporated herein by reference.
BACKGROUND OF THE INVENTION
This invention relates to an electrically heated steam ironing station composed of a steam iron and a steam generator which is heatable in at least two power stages and which is separate from the steam iron and is coupled thereto by a steam hose.
Steam ironing stations of the above type are widely known in many markets of the world. In some regions, however, such steam ironing stations which require substantial electric power since their steam output is at least twice that of manual steam irons which have a self-contained steam generator, are unknown for household use. The reason therefor resides in the low line voltage in countries of such regions. The available electric power at the line outlet is the product of the line voltage and the maximum current intensity. The maximum household current intensity is worldwide limited to approximately I=12A while the line voltage is in some countries only 100V. In such a network the maximum rated power at an outlet is thus limited to P
max
=V×I=1200 W. Considering that the heater for the electric iron needs a power of, for example P
BE
=800 W, then for the steam generator only P
DE
=400 W remains. With such a low power, however, no more vapor may be generated than in a manual steam iron having an integral steam generator. Consequently, under such circumstances installing conventional steam ironing stations capable of producing substantially more vapor power than a manual steam iron has no practical justification in regions providing only an about 100 V line voltage.
A high-power steam ironing station has a power rating of approximately P=2000 W. Thus, in accordance with the above calculation, for the steam generator about P
DE
=1200 W power may be allocated which suffices for a steam supply of almost 30 g/sec. In case a higher steam output is desired, even regions with 220/230V line voltage experience the above-explained problem.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an improved steam ironing station in which the power supplied for steam generation is increased without increasing the rated power supply of the network.
This object and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, the steam ironing station includes a steam iron; a steam generator supplying steam to the steam iron; an iron heater disposed in the iron and having an iron heater circuit connectable to a line voltage; a temperature responsive device for opening the iron heater circuit when a predetermined ironing temperature is reached; and a steam generator heater disposed in the steam generator and having first and second steam heater circuits connectable to the line voltage. The electric power, supplied simultaneously by the iron heater circuit and by the first steam heater circuit to the steam ironing station has a maximum value of the rated power of the line voltage, and the electric power supplied solely by the second steam heater circuit to the steam ironing station has a maximum value of the rated power and a greater value than the power supplied by the first steam heater circuit. Further, a switching arrangement is provided for placing the second steam heater circuit in a closed state solely when the iron heater circuit is in an open state.
REFERENCES:
patent: 3508354 (1970-04-01), Stansbury et al.
patent: 5042179 (1991-08-01), Van Der Meer
patent: 5191191 (1993-03-01), St. Aubyn
patent: 5780812 (1998-07-01), Klinkenberg
Izaguirre Ismael
Kelemen Gabor J.
Venable
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