JPS6358600B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a steam iron for general household use.

Conventional Structure and Problems Conventionally, as a method of sensing the heat of the base and controlling the supply of water to the vaporization chamber, a structure was considered in which the nozzle part was opened and closed by a bimetal provided in the vaporization chamber.

However, since the above-mentioned bimetal is a slow motion type, the nozzle part is not opened and closed accurately depending on the base temperature, and sometimes the nozzle part is opened even though the vaporization chamber has not yet reached a sufficient vaporization temperature. Water was being supplied to the area, causing water outflow. There is also a reversible bimetal type, but since it was installed in the vaporization chamber, it was affected by water or steam, causing problems such as corrosion. Moreover, since the water dripping from the nozzle is splashed onto the bimetal, there is a drawback that the response to the base temperature is poor.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and provides a steam iron in which the water passage opening/closing device operates appropriately by sensing the temperature of the base.

Structure of the Invention In order to achieve the above object, the present invention includes a base heated by a heater, a vaporization chamber provided on the base, a tank disposed above the base, and a water passage leading from the tank to the vaporization chamber. and a dripping nozzle provided in the water passage for supplying a prescribed amount of water to the vaporization chamber, and an opening/closing device provided in the water passage at a distance from the dripping nozzle in the horizontal direction, The opening/closing device is disposed outside the vaporization chamber of the base and is linked to a thermally responsive member made of reversible bimetal.

According to the above configuration, since the drip nozzle and the opening/closing device are installed with a distance between them, the bimetal can be located away from the vaporization chamber,
Can be isolated from water and steam.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In the figure, 1 is a base in which a heater 2 is embedded, and a vaporizing chamber 3 and a steam hole 4 are formed therein. 5 is a base lid that covers the vaporization chamber 3;
A cover 6 covers the entire base 1 from above.
Reference numeral 7 denotes a handle installed above the base 1, and a tank 8 is formed inside. Reference numeral 9 denotes a bottom plate which is fixed to the lower surface of the handle 7 and defines the tank 8, and has an opening 10 and a cylindrical projecting portion 11 projecting upwardly at intervals in the horizontal direction. A support hole 12 is formed in the upper surface of 11. 13
is a water passage forming member fixed to the back surface of the bottom plate 9, which covers the opening 10 and the lower surface of the protruding cylindrical portion 11, and forms a horizontal water passage 14 with the bottom plate 9. Reference numeral 15 denotes a recess formed independently behind the vaporization chamber 3 of the base 1, and a thermally responsive member 16 formed of a reversible bimetal that senses the base temperature and performs reversal operation is disposed within the recess 15.
17 is a lid that covers the recess 15, and in the center of this lid 17 is a guide hole 19 that slidably holds a pin 18 that moves up and down as the thermally responsive member 16 reverses.
is formed. Reference numeral 20 denotes a first opening/closing device having a valve shaft 20a integrally provided with an opening/closing valve 21 for opening/closing the opening 10 at the upper part thereof, and an opening 22 of the water passage forming member 13 disposed below the opening 10 and the opening 10. through the on-off valve 21 by the spring 23.
is urged downward to close the opening 10. 24 is flexible packing that covers the lower surface of the opening 22 of the water passage forming member 13. The first switching device 20 is connected to the thermally responsive member 16 via the pin 18.
The opening 10 is opened and closed by moving up and down in response to the up and down movement caused by the reversing operation. Reference numeral 25 denotes a drip nozzle provided on the water passage forming member 13 facing the lower surface of the protruding cylindrical portion 11 . An opening 26 is formed in the base lid 5 located below the dripping nozzle 25, and water dripped from the dripping nozzle 25 is supplied into the vaporization chamber 3 through this opening 26. Reference numeral 27 denotes a second opening/closing device having an opening/closing rod 27a that moves up and down inside the protruding cylinder 11 and opens and closes the opening of the dripping nozzle 25 at its lower end. Although it is open, when the operation button 28 at the upper end is manually pressed downward, the opening/closing rod 27a descends and closes the opening of the drip nozzle 25. 29 is the drip nozzle 25 and the opening 2 of the base lid 5
This is packing to connect 6.

In the above configuration, when ironing is performed using steam, the pressure on the operation button 28 is released, the opening/closing rod 27a is raised, and the dripping nozzle 25
Open the opening. When the temperature of the base 1 is lower than the appropriate steam temperature, such as when the heater 2 is initially energized, the thermally responsive member 16 is in the state shown in FIG. 1, and the on-off valve 21 closes the opening 10. Therefore, water does not flow into the water passage 14 and is not supplied into the vaporization chamber 3 even if the drip nozzle 25 is opened.

Then, the base 1 is heated by the heater 2,
When the temperature reaches an appropriate temperature for vaporizing water, the thermally responsive member 16 performs a reverse operation as shown in FIG. to open. In this state, the water in the tank 8 passes through the water passage 14 and is supplied from the drip nozzle 25 to the vaporization chamber 3.
The steam generated inside is discharged from the steam hole 4. Of course, even when in use, the operation button 2
8 and block the drip nozzle 25 with the second opening/closing device 27, it is possible to stop the supply of water to the vaporization chamber 3, and switching between steam and dry can be done manually. You can do it as you like.

Although the heat-responsive member 16 is shown as a circle in the embodiment, its shape is not limited, and it may be any shape that rapidly reverses itself when heated to a certain temperature.

Effects of the Invention As described above, the steam iron of the present invention employs a reversible bimetal as a heat-responsive member, and as a result, when the temperature reaches a temperature that can vaporize water, or when the temperature drops below that temperature, the steam iron quickly It operates to open and close the water passage, and its reverse stroke can be used to reliably open and close the water passage, and the water dripping from the dripping nozzle does not touch the bimetal, so the base temperature can be adjusted accurately. Because it responds to the pressure, a stable jet of steam can be obtained. In addition, since the bimetal can be placed in the most advantageous location in terms of coordination, such as directly below the switchgear,
The link structure can be simplified, and the mechanical operation loss of the link can be reduced to allow the switching device to operate smoothly.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a main part of a steam iron showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of the main part when steam is generated, and FIG. 3 is an exploded perspective view of the main part.
FIG. 4 is a top view of the base of the same steam iron with the base lid removed. 1...base, 2...heater, 3...vaporization chamber,
8...Tank, 14...Water passage, 16...Thermal response member, 20, 27...Switching device.

Claims (1)

[Claims] 1. A base heated by a heater, a vaporization chamber provided on this base, a tank placed above this base, and a water passage leading from this tank to the vaporization chamber,
A dripping nozzle provided in the water passageway for supplying a prescribed amount of water to the vaporization chamber, and an opening/closing device provided in the water passageway at an interval in the horizontal direction with respect to the dripping nozzle, the opening/closing device is a steam iron that is connected to a heat-responsive member made of reversible bimetal, located outside the vaporization chamber of the base.