JPS602079B2 - steam iron - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an improvement of a steam iron, particularly a so-called drip-type steam iron, in which a vaporizing chamber and a steam passage are directly connected, and the steam generated in the vaporizing chamber is directly guided to a steam outlet on a base surface. Regarding.

Specifically, in the nozzle part that connects the tank and the vaporization chamber,
A normally open valve is installed separately from the manual opening/closing device, and the normally closed valve is automatically controlled by a bimetal that senses the temperature of the base and moves to improve quality. The device 2 that closes the nozzle part by displacement of bimetal is, for example, published in 1973.
It is disclosed in Japanese Patent No.-15590.

However, since the bimetal is installed inside the vaporization chamber and constantly comes into contact with hot water or water, it is susceptible to corrosion and cannot withstand long-term use. Further, the above-mentioned known example shows a slow-shift type bimetal, and the opening/closing operation of the nozzle portion is slow and cannot be put to practical use. The present invention is intended to eliminate such conventional drawbacks, and embodiments thereof will be described below with reference to the drawings.

1 has a base, a heater 2 is buried therein, and a vaporizing chamber 3 and a steam hole 4.

5 is a base diamond provided to cover the vaporization chamber 3, and the tank 6
A cylindrical protrusion 8 is provided at a position facing the nozzle part 7 provided at the bottom, and the protrusion 8 is provided with a plurality of guide grooves 8'.

A bimetal 9 detects the temperature of the base lid 5 and operates in reverse, and is covered with a cover 10.

11 is a packing made of silicone rubber or the like whose upper part is squeezed by a metal fitting 12 so as to be held on the protrusion 8 of the base lozenge 5, and whose lower part is airtightly attached to the protrusion 8; 13 is so as to be guided into the guide groove 8'. It has a leg part 13a in the center part, and a protrusion 13b in the center part.
This is a valve body with a small hole 13c provided around the base of the protrusion 13b.

The nozzle part 7 has a first hole 7 that is opened and closed by an opening and closing hole 14.
a, and a second hole 7b provided at a distance from and below the first hole 7a, and a ball 16 urged by a spring 15 is pressed against the second hole 7b, It constitutes a normally closed valve. The opening/closing punch 14 is manually operated, and the nozzle part 7
The first hole 7a is closed and used as a so-called dry iron, and the first hole 7a is opened and used as a steam iron.

The bimetal 9 is of a so-called disc spring type having a circular hole in the center, and is provided outside the packing 11 to drive the valve body 13 through the packing 11. Third
The figure shows the state before the bimetal 9 is displaced, so the ball 16 closes the second hole 7b of the nozzle part 7, and even if the first hole 78 is open, water in the tank is not supplied to the vaporization chamber 3. . When the base 1 is heated and the vaporization capacity of the vaporization chamber 3 is ready, the base lid 5 also rises to a certain temperature due to the conduction heat from the base 1. Sensing this heat, the bimetal 9 Flip as shown.

The displacement at this time pushes the valve body 13, and the projection 13b pushes the ball 16, opening the normally open valve. As described above, according to the present invention, since the bimetal senses the temperature rise of the base and controls the normally closed valve of the nozzle part, water will not come out from the steam hole due to ironing operations. In addition, since the bimetal is located outside the packing and does not come into contact with water or steam, it can withstand long-term use without fear of corrosion, improving the quality of the steam iron.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side sectional view, Fig. 2 is a partially blind perspective view, Figs. Figure 4 shows the nozzle in its open state. 1...base, 3...vaporization chamber, 5...base lid, 6...
Tank, 7... Nozzle part, 9... Bimetal, 11...
Packing, 16...balls. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. A base forming a vaporizing chamber, a tank installed on the base, a nozzle section provided at the bottom of the tank, communicating with the vaporizing chamber, and equipped with a normally closed valve, and this nozzle. The packing includes a packing that connects the vaporizing chamber and the vaporizing chamber to form a waterway, and a bimetal that faces the nozzle and is located outside of the packing. A steam iron in which a normally closed valve in a nozzle section is driven to open the nozzle section. 2. The steam iron according to claim 1, wherein the bimetal has a circular disk spring shape with a through hole in the center.