JPS6324399B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a steam iron used for finishing clothes, etc.

Conventional structure and problems Conventionally, in this type of steam iron,
As shown in Figure 1, the vaporizing chamber 1 is connected to the iron base 2.
It communicates with a water tank 6 which is provided on the top and is detachable from the vaporization chamber side via a water supply nozzle 4 having a water supply hole 3 and a rubber pusher 5 for preventing water leakage.
In addition, the water supply hole 3 was opened and closed by moving an operating shaft 8 up and down by operating an open/close button 7, so that water dripped into the vaporization chamber 1. However, when the iron is stored horizontally with the operating shaft 8 raised while water remains in the water tank 6, water drips into the vaporizing chamber 1 and corrodes the inside of the vaporizing chamber 1 and the bottom of the base 2. When used next time, corrosion products are ejected together with steam, staining the fabric and clogging the steam ejection hole 9'. Also, base 2
When the temperature of the base 2 has not risen sufficiently or when ironing is done with the temperature setting of the base 2 lower than the steam scale, if you operate the open/close button 7 and raise the operating shaft 8, the steam will flow into the vaporizing chamber 1. Not all of the dropped water turned into steam, and some of it spouted out from the spout hole 9' as hot water, sometimes causing stains on the fabric.

Purpose of the Invention The present invention solves these conventional disadvantages, and has an extremely simple structure that controls the temperature of the water supply in the water tank to prevent unnecessary water dripping, thereby preventing corrosion or fabric damage. To provide an excellent steam iron that does not cause stains or the like.

Structure of the Invention The steam iron of the present invention includes a base, a vaporizing chamber provided in the base, and a water supply hole provided in a nozzle having a valve that can be opened and closed by external operation to supply water to the vaporizing chamber. It has a tank and a rubber bushing that connects the nozzle and the vaporization chamber,
By combining a permanent magnet and a ferromagnetic material whose Curie point is set at a predetermined temperature, a magnet that attracts the ferromagnetic material when the temperature of the ferromagnetic material is lower than the Curie point but does not lose its magnetism when it is higher than the Curie point. Taking advantage of its non-adsorption property, this ferromagnetic material is equipped with a valve device that senses the temperature of the base or vaporization chamber, and controls the supply of water from the water tank to the vaporization chamber based on the temperature. This is a unique feature that suppresses the unnecessary supply of water to the vaporization chamber and eliminates the problems that occurred at that time.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 2 shows a sectional view of the vicinity of the vaporizing chamber of an embodiment of the present invention, and the other structure is the same as that of a conventional steam iron, and the same parts are given the same reference numerals. In the figure, 9 is a donut ring-shaped valve seat made of a ferromagnetic material such as ferrite whose Curie point is set at around 100°C.
It is located in a rubber bush 5 which is fixed to the upper part of the vaporization chamber inlet 10 made of aluminum for heat transfer purposes. Inside the vaporization chamber inlet 10 is a movable valve 11 made of a ball made of a permanent magnet whose diameter is larger than the diameter of the hole 9a of the valve seat 9, and can move freely inside the vaporization chamber inlet 10. That is, the valve seat 9 and the moving valve 1
1 constitutes a valve device that controls water supply to the vaporization chamber 1. Further, reference numeral 12 denotes a receiving claw that prevents the moving valve 11 from going to the vaporization chamber 1.

To explain the operation in the above configuration, base 2
Approximately 160℃~, which is the appropriate temperature for steam generation.
When the temperature rises to 180° C., the temperature of the valve seat 9 is also approximately equal to that of the base 2 due to heat conduction. At this time, the valve seat 9 has lost its magnetism because the temperature is higher than the Curie point temperature, and the movable valve 11 made of a permanent magnet is held by the receiving claw 1 at the position 11' due to gravity.
It's close to 2. When the operating shaft 8 is raised in this state, the water that has entered the water tank 6 will flow through the water supply hole 3 of the nozzle 4.
, and drips into the vaporization chamber 1 from the vaporization chamber entrance 10 to generate steam. When water begins to drip, the valve seat 9 is splashed with water and cooled, but if the temperature of the base 2 is sufficient, the temperature will not drop below the Curie point.
Now, if the temperature of the base 2 is insufficient, that is, if the heater is not turned on or the temperature is set lower than the steam scale, the temperature of the valve seat 9 will drop below the Curie point and the magnetism will be restored. ,
The movable valve 11 is attracted to the valve seat 9 by magnetic force, and the hole 9
Block a. In this state, even if the operating shaft 8 is raised and water comes out from the water supply hole 3, it will not drip into the vaporization chamber 1.

FIG. 3 shows another embodiment of the present invention, in which a plate-shaped moving valve 13 made of a permanent magnet and a spring 14 are used instead of the moving valve made of balls in the valve device of the previous embodiment, and the valve seat is When the temperature at valve seat 9 is higher than the Curie point, the movable valve 13 is moved to position 13' by the elastic force of spring 14, and the water coming out from water supply hole 3 drips into vaporization chamber 1, but the water at valve seat 9 When the temperature is lower than the Curie point, the movable valve 13 is magnetically attracted to the valve seat 9, closes the hole 9a, and the water flows into the vaporization chamber 1.
Do not drip.

In addition, in each of the above embodiments, a ferromagnetic material whose Curie point is set at a predetermined temperature is used for the valve seat, and a permanent magnet is used for the ball or plate-shaped moving valve, but heat is transferred to the ferromagnetic material. It goes without saying that the combination of materials can be reversed if devised in this way and the same effect will be achieved.

Effects of the Invention As is clear from the above embodiments, the steam iron of the present invention combines a permanent magnet and a ferromagnetic material whose Curie point is set at a predetermined temperature between the water supply hole and the vaporization chamber entrance. Equipped with a valve device, the temperature of the water supply from the water tank to the vaporization chamber is automatically controlled, and there is no risk of water dripping even if water remains in the water tank. It does not cause corrosion of the chamber.
In addition, since water is not dripped into the vaporization chamber unless the base and vaporization chamber reach the appropriate temperature for steam generation, hot water will not mix with the steam and will not spray out from the spout, and will not stain the fabric.

In addition, even if you do not conduct electricity drying after using the iron, if the temperature of the base and vaporization chamber becomes low, the water supply will stop, and any water remaining in the vaporization chamber will be dried by preheating the base, making it easy to clean up after use. becomes easier.

Furthermore, since the valve device is installed on the inlet side of the vaporizing chamber and is separate from the valve for opening and closing the nozzle, it can be applied to steam irons with a removable water tank, a so-called cassette tank type. Also, there is little water scale adhesion to this valve device, and reliable operation can be maintained.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway sectional view showing a conventional steam iron, Fig. 2 is a sectional view of essential parts of a steam iron showing an embodiment of the present invention, and Fig. 3 is a steam iron showing another embodiment of the present invention. It is a sectional view of the main part of the iron. 1... vaporization chamber, 2... base, 3... water supply hole,
6...Water tank, 9...Valve seat, 11, 13...Moveable valve.

Claims (1)

[Scope of Claims] 1. A base, a vaporization chamber provided on the base, a water tank that supplies water to the vaporization chamber through a water supply hole provided in a nozzle, and the water supply hole opened and closed by an external operation. It is composed of a valve, a rubber bush that connects the nozzle and the vaporization chamber, and a permanent magnet and a ferromagnetic material whose Curie point is set at a predetermined temperature. A steam iron equipped with a valve device installed on the inlet side of the vaporizing chamber. 2. A valve seat made of a ferromagnetic material is thermally connected and fixed to the vaporization chamber, and a moving valve made of a permanent magnet is used to remove water from the water tank when the temperature of the ferromagnetic material is higher than the set temperature. Supply water to the vaporization chamber,
The steam iron according to claim 1, wherein the valve device is configured to stop when the temperature is low. 3 A valve seat made of a permanent magnet is fixed in a fixed position, and a moving valve made of a ferromagnetic material allows water to be pumped from the water tank to the vaporization chamber when the temperature of the ferromagnetic material is higher than the set temperature. Claim 1, in which the valve device is configured to supply water and stop when the temperature is low.
Steam iron as described in section.