JPS5933356Y2 - steam iron - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a steam iron that prevents water droplets from dripping on the folded surface of the iron.

Conventionally, as shown in Fig. 1, this type of steam iron has been equipped with a tank C attached to the upper part of a base a via a vaporizing chamber, and a drip hole d between the tank C and the vaporizing chamber. A valve rod f whose tip section has a gradually smaller cross-sectional area is inserted into the drip hole d of the nozzle e, and the valve rod f is moved back and forth by the displacement of the bimetal g to open the drip hole d. There is a known structure that opens and closes to adjust the amount of dripping depending on the temperature of the vaporization chamber.

However, according to this structure, the diameter of the drip hole d is generally φ0
．． Since it is about 6 to φ2, it takes a lot of effort to form the drip hole d, the shape of the valve rod f for the drip hole d, and the shape and position of the tip of the valve rod. There are also problems such as the risk of water droplets dripping onto the folded surfaces.

In addition, a vertically sliding rond is passed through the tank and the vaporization chamber, and a pair of on-off valves are installed on the tank side and the vaporization chamber side, and a bimetal or the like is installed at the lower end of the rond on the vaporization chamber side to adjust the vertical sliding of the rond. A structure in which a thermally responsive element is provided is known, but this structure has problems such as a narrow temperature range in which steam can be ejected.

The present invention was devised in view of these points, and consists of heating the water in the water reservoir chamber in a heating chamber to boil it and turning it into steam, and then squirting it out onto the folded surface of the iron through the vaporizing chamber. To provide a steam iron which can always eject steam without water droplets without being affected by the temperature of folding surfaces of the iron, and which does not require strict control of the diameter of a drip hole and a valve therefor.

Next, an embodiment of the present invention will be described with reference to FIGS. 2 to 7.

Reference numeral 1 denotes an iron base, and a heater 2 made of a sheathed wire is cast into the iron base 1.

Further, a water reservoir chamber 3 is formed in the vertical direction in this iron base 1, and an outlet 5 of a tank 4 is formed at the upper end opening of this water reservoir chamber 3.
is fixed and connected.

Further, a heating chamber 7 is formed in the lower part of one side of the water storage chamber 3 via a partition wall 6, and a vaporization chamber 9 is formed in the upper part of this heating chamber 7 via a partition wall 8. Steam outlet 1 communicating with the folded surface 10 of the iron base 1
1 is drilled.

Further, a mounting recess 12 is formed in the lower part of the iron base 1 and communicates with the water reservoir chamber 3 and the heating chamber 7. In the mounting recess 12, a lower end opening of the water reservoir chamber 3 and a lower end opening of the heating chamber γ are formed. A lid body 14 having a closing surface 13 for watertightly closing the iron base 1 is removably attached by a fixing means (not shown), and a continuous folding surface 15 flush with the folding surface 10 of the iron base 1 is provided on the lower surface of the lid body 14. is formed.

Next, a communication port 16 is formed in the lower part of the partition wall 6 between the water storage chamber 3 and the heating chamber 7 to communicate the water storage chamber 3 and the heating chamber γ, and a first valve body 17 is inserted into the communication port 16. installed.

This first valve body 17 has a main body frame 18 that is watertightly attached within the communication hole 16.
8 is formed with an inlet 19 that communicates with the water reservoir chamber 3, and an outlet 20 that communicates with the inlet 19 with the heating chamber 7, and a valve seat 21 of the inlet 19. A valve 22 for opening and closing the inlet 19 is installed in the main body frame 18 so as to be able to move forward and backward, and a coil spring 24 is interposed between the valve 22 and the opening edge 23 of the outlet 20. has been done.

The coil spring 24 causes the valve 22 to close the inlet 19 at all times.

Further, a communication port 25 is formed in the partition wall 8 between the heating chamber 7 and the vaporization chamber 9 to communicate the heating chamber 7 and the vaporization chamber 9, and a second valve body 26 is attached to the communication port 25. .

This second valve body 26 has a main body frame 27 that is watertightly attached within the communication port 25.
7 is formed with an outlet 28 that communicates with the heating chamber 7, an inlet 29 that communicates with the outlet 28 with the vaporization chamber 9, and a valve seat 30 of the outlet 28. A valve 31 for opening and closing the outflow port 28 is installed in the main body frame 27 so as to be able to move forward and backward, and a coil spring 33 is interposed between the valve 31 and the opening edge 32 of the inflow port 29. has been done.

The coil spring 33 causes the valve 31 to always close the outlet 28.

Therefore, the urging force of the coil spring 33 provided in the second valve body 26 against the valve 31, that is, the closing force of the outlet 28, is the same as that of the coil spring 24 provided in the first valve body 17. The force applied to the valve 22 is greater than the closing force of the inlet 19 .

Next, the operation of the above structure will be explained.

Place the steam iron horizontally as shown in Figure 3.

Next, as shown in Fig. 4, a heater 2 consisting of a sheathed wire is
When water H is poured into the tank 4 without energizing it,
This water H is temporarily stored in the water reservoir chamber 3, and its water pressure gradually pushes back the valve 22 of the first valve body 17 against the coil spring 24, opening the inlet 19 and opening the heating chamber. 7 and is stored in a predetermined amount in the heating chamber 7. As shown in FIGS. 2 and 5, the water level H1 is determined by the pressure of the air in the tank 4 and the air in the heating chamber 7. It becomes stable at a position where it is in equilibrium with the pressure of

Then, as shown in FIG. 5, the valve 22 of the first valve body 1T returns to its original position due to the restoring force of the coil spring 24, and its inlet port 19
occlude.

Next, when the heater 2 made of a sheathed wire is energized, the water H in the heating chamber 7 is heated and begins to boil.
The steam pressure inside the valve 22 of the first valve body 17, together with the restoring force of the coil spring 24, more strongly closes the inlet port 19 to prevent the inflow of water H, as shown in FIG. Then, due to the steam pressure, the valve 3 of the second valve body 26
1 is pushed back against the coil spring 33, and the outlet 28 is pushed back against the coil spring 33.
The steam flows into the vaporization chamber 9 through the inlet 29 and the steam outlet 1 of the vaporization chamber 9.
1 to the folding surfaces 10 and 15.

Next, when the steam pressure in the heating chamber 7 decreases, the valve 31 of the second valve body 26 gradually returns to its original position due to the restoring force of its coil spring 33, as shown in FIG. 7, and closes its outlet port 28. The valve 22 of the first valve body 17 is gradually pushed back against the coil spring 24 by the water pressure in the water reservoir chamber 3, opening its inlet 19, and the water flows into the heating chamber 17. As mentioned above, the water rises to a certain water level H1.

The water H in the heating chamber 7 is turned into steam as described above, and the pressure of the steam is applied to the valve 2 of the first valve body 17.
2 is closed, while the valve 31 of the second valve body 26 is opened, and the steam is ejected from the vaporization chamber 9 through the steam ejection hole 11 onto the folding surface 10°15.

In this way, the interaction between the first valve body 17 and the second valve body 26 automatically supplies the water H for steam to the heating chamber 7 at a constant water level H1, which is turned into steam and steam is ejected. It can be ejected from the hole 11.

In this case, the valve 31 of the second valve body 26 is opened and closed by the steam pressure in the heating chamber 7, and this valve 31 itself controls the function as an obstruction member for removing water droplets, and the steam is further removed in the vaporization chamber 9. Since the steam is heated and vaporized, no water droplets are ejected from the steam ejection holes 11.

Furthermore, since most of the water H in the heating chamber 7 is turned into steam within the heating chamber 7, limescale will accumulate in the heating chamber T. In such a case, by removing the lid 14, , the inside of the heating chamber 7 can be easily cleaned.

According to the present invention, it is possible to supply a predetermined amount of water in the water reservoir chamber into the heating chamber, steam it, supply it into the vaporization chamber, further vaporize it in the vaporization chamber, and spray it onto the folded surface of the iron base. In this case, the supply of water to the heating chamber and the supply of steam to the vaporization chamber are automatically performed by the mutual control action of the first and second valve bodies. Therefore, the water supplied to the heating chamber is The steam that is reliably vaporized and ejected onto the folded surface of the iron base will not be ejected with water droplets mixed in with it.

In addition, as in the conventional structure, a nozzle with a drip hole is installed between the tank and the vaporization chamber, and a valve lever that requires molding precision is provided for this drip hole, which is complicated to manufacture and install. It does not require extensive labor or strict management, has a simple structure, and is easy to manufacture.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of a conventional steam iron, Fig. 2 is a sectional view showing an embodiment of the steam iron of the present invention, and Figs. 3 to 7 are explanatory sectional views showing the same operation. It is. 3...Water storage chamber, 7...Heating chamber, 9...
... Vaporization chamber, 11 ... Steam outlet, 1
7...First valve body, 26... Second valve body.

Claims (2)

[Scope of utility model registration request] (1) A heating chamber is communicated between a water reservoir chamber and a vaporization chamber having a steam ejection hole, and a first valve body is interposed between the heating chamber and the water reservoir chamber, and the heating chamber and the vaporization chamber are interposed between the heating chamber and the vaporization chamber. A steam iron characterized in that a second valve body is interposed between the chamber and the chamber. (2) The steam iron according to claim 1, which is a registered utility model, characterized in that the closing force of the second valve body is made greater than the closing force of the first valve body.