JPS59186600A - Steam iron - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

Conventional configurations and their problems In recent years, most household irons are steam irons with a steam generation function, and more than 60% of them have a steam water tank that can be removed from the main body. This is a steam iron with a 7) type steam iron.

The steam generation method of current steam irons employs a so-called drip type, in which the vaporization chamber and the steam passage are directly connected, and the steam generated in the vaporization chamber is directly guided to the steam outlet on the base surface. However, some drawbacks are that if water is supplied to the vaporization chamber whose temperature has not risen sufficiently, the water may not all become steam and hot water may gush out from the steam outlet, or the water remaining in the vaporization chamber after use may vaporize. Corrosion sometimes occurred in the chamber and base. In order to solve these problems, a steam iron as shown in FIG. 1 has been proposed.

In Fig. 1, a base 1 in which a heater 1' is embedded has a
A vaporization chamber 3 and a steam ejection hole 4 are formed and communicated through a steam passage 2. The vaporization chamber 3 is provided in an annular shape around the protrusion 5. 6 is a base lid, 7 is a water tank, and 8 is a nozzle fixed below the water tank 7 facing the vaporizing chamber 3, communicating with the inside of the water tank 7, and having a tapered water supply hole in the lower floor. 9 is perforated. The nozzle 8 is made of a ferromagnetic material such as ferrite whose single point is set at a predetermined temperature, so that heat is transferred from the base 1. 10 is a tapered pulp that opens and closes the water supply hole 9, and is made of a permanent magnet. 11 is a shaft of the pulp 10, 12 is provided with a steam button 14 projecting from the handle portion 13 above, and a cylindrical portion 16 is provided below into which a large diameter portion 16 formed at the upper end of the shaft 11 fits vertically freely. The opening/closing shaft 17 is a spring that biases the pulp 1o in the listening direction. 18 is a rubber gasket that prevents water in the water tank 7 from leaking to the outside.

In the above configuration, in FIG. 1, the opening/closing shaft 12 is in the raised position, and the large-diameter portion 15 is engaged with the lower opening edge of the cylindrical portion 16, and the shaft 11 is also forcibly raised. 10 is closely attached. When the opening/closing shaft 12 is lowered from this via the steam button 14, the shaft 11 reaches the middle of the cylindrical portion 16.
Since the large-diameter portion 16 of the pulp 1o slides relative to each other, the pulp 1o becomes operable, and the spring 17 is also set to generate a certain repulsive force.

When the temperature of the vaporization chamber 3 is low, the magnetic attractive force between the nozzle 8 and the pulp 1o is stronger than the repulsive force of the spring 17, so the pulp 10 is attracted to the nozzle 8 and closes the water supply hole 9. . When the temperature of the base 1 rises and the nozzle 8 reaches a single point due to heat conduction, the nozzle 8 and the pulp 10
During this period, the magnetic attraction force no longer works, and the pulp 1o descends under the action of the spring 17, opening the water supply hole 9 and filling the water tank 7.
The water therein is supplied to a vaporization chamber 3, and the steam generated here is ejected from a steam outlet 4 via a steam passage 2. In addition, when the base temperature decreases due to water vaporization, the nozzle 8 also recovers its magnetism in response to this, and the pulp 1
o is adsorbed to the nozzle 8 and stops supplying water.

However, in the above configuration, the nozzle 8 needs to receive heat from the base 1, and it is impossible to separate it from the base 1 or the vaporization chamber 3. It was very difficult to make the seven parts of the water tank removable from the main body, and there were also problems in making each part of the valve device compact and unitized, making it unsuitable for practical use. Further, in the conventional example, the amount of water dripping into the vaporization chamber 3 when the nozzle 10 is opened is
Since the amount of water dripping is determined by the gap between the inner surface of the water supply hole 9 and the outer periphery of the nokurupu 10, the amount of water dripping is likely to change due to structural and manufacturing variations, making it difficult to ensure steam performance. There was also.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and makes it possible to control the temperature of water dripping from the water tank to the vaporizing chamber without changing the basic configuration of the current cassette steam iron. Furthermore, the temperature control section is made more compact and unitized to improve the ease of assembly, and the iron has superior steam performance.

Structure of the Invention In order to achieve this object, the steam iron of the present invention includes a base, a vaporizing chamber provided in the base, a nozzle having pulp that can be opened and closed by external operation, and vaporizing water through the nozzle. It is equipped with a water tank that is removable from the vaporization chamber and that is supplied to the vaporization chamber, and a pulp device that controls water supply from the water tank to the vaporization chamber. A valve seat made of a magnetic material and fixed in thermal association with a vaporization chamber, a permanent magnet having a valve function, a spring disposed around the permanent magnet, a casing housing the permanent magnet and spring, and a spring. Equipped with a stopper that regulates the position of the permanent magnet when the magnet is expanded or contracted. By providing a pulping device independent of the nozzle in this way, the nozzle can be fixed to a removable water tank, and by placing a spring around the permanent magnet to make it more compact, the current cassette-type steam iron This makes it possible to control the temperature of water dripping from the water tank to the vaporization chamber without changing the basic configuration of the system. However, the valve device is easy to unitize and is easy to assemble, and the amount of water dripping into the vaporizing chamber when the pulp is opened can be determined by the shape of the nozzle, similar to current steam irons, making it easy to ensure steam performance. It's easy.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a partially cutaway sectional view of a steam iron in an embodiment of the present invention.

In FIG. 2, a base 21 in which a heater 21' is embedded has a vaporizing chamber 23 and a steam ejection hole 24 which are communicated through a steam passage 22. A rubber bush 26 is fixed on the base lid 26, connects the nozzle 28 fixed to the water tank 27 and the base 26, and prevents the water in the water tank 27 from flowing out. Reference numeral 29 denotes a water supply hole provided in the nozzle 28, through which a needle-type pulp 3o is opened and closed by an external operation via an opening/closing shaft 31. 'It can be opened and closed by moving up and down in conjunction with the steam button 32. Reference numeral 33 denotes a valve device, which controls the supply/stop of water dripping from the water supply hole 29 provided in the nozzle 28 to the vaporization chamber 23 based on the temperature. Also, the nozzle 28. Needle pulp 30. Opening/closing shaft 31. The water tank 27 having the steam button 32 can be separated from the rubber bushing 25 and can be attached and detached from the vaporization chamber 23 side.

In addition, in FIG. 2, the structure is exactly the same as the current cassette type steam iron except for the pulp device 33.

3 and 4 illustrate the vicinity of the second pulp device 33. Reference numeral 34 denotes a valve seat made of a ferromagnetic material such as ferrite whose single point is set at a predetermined temperature, and heat is transferred from the base 21 through the base lid 26. A permanent magnet 36 has a sliding shaft 36 and functions as a moving valve. The spring 37 is arranged around the permanent magnet 36 and
6 in the direction toward opening the valve (that is, it is a compression spring). Reference numeral 38 denotes a stopper that regulates the position of the permanent magnet 36 when the valve is opened, and is provided with a protrusion 38' at the part that comes into contact with the permanent magnet 36, and a through hole 38'' in the center.3
9 is a casing that houses the permanent magnet 35 and the spring 37.

The operation of the above configuration will be explained with reference to FIGS. 3 and 4. FIG. 3 shows a state in which the valve device 33 is closed, that is, water dripping from the water supply hole 29 is not supplied to the vaporization chamber 23, and FIG. 4 shows a state in which the valve is opened.

When the temperature of the vaporizing chamber 23 is low enough to generate steam, that is, when the base 21 is not sufficiently heated, the temperature of the valve seat 34 is below one point of Cu IJ.
A magnetic attraction force acts between the valve seat 34 and the permanent magnet 35, and the permanent magnet 36 compresses the spring 37, attracts the valve seat 34, and closes the central hole 34' of the valve seat 34 (FIG. 3). In this state, water is not supplied to the vaporization chamber 23 even if the steam button 32 is operated to raise the needle pulp 3° to a steam state. Next, when the temperature of the vaporization chamber 23 rises sufficiently to enable steam generation, the valve seat 34 is moved to the base 2.
Due to heat conduction from 1, the temperature rises to more than one Curie point and loses its magnetism, and no magnetic attraction force is exerted between it and the permanent magnet 36, and the permanent magnet 36 is pushed upward by the spring 37, and the stopper 38 It comes into contact and stops, and the valve seat 34
Open the central hole 34' (Figure 4). In this state, if you operate the steam button 32 to create a steam state, the water supply hole 2
The water dripping from 9 is supplied to the vaporization chamber 23 as indicated by arrow a'.

Furthermore, for example, even if the power is turned off while water is being supplied to the vaporization chamber 23 and the temperature of the vaporization chamber 23 drops,
As mentioned above, the permanent magnet 36 is attracted to the valve seat 34 and blocks the central hole 34', stopping the water supply. The vaporization chamber 23 will not be corroded due to accumulation.

FIG. 6 is an exploded sectional view of a main part of another embodiment of the present invention,
An example is shown in which the valve seat 34 and the stopper 38 are connected by a casing 39' to form a unit. The operation is exactly the same as in the above embodiment. By unitizing in this way, ease of assembly can be improved.

Note that in each of the above embodiments, the permanent magnet 36 is placed above the valve seat 34, but even if the positional relationship is reversed and the permanent magnet 35 is placed below the valve seat 34 as shown in FIG. 6, the same function will be obtained. Needless to say, this will be accomplished.

Incidentally, in each of the above embodiments, the material of the casings 39, 39', and 39'' that house the permanent magnets and springs was not described, but the material can be made of a ferromagnetic material such as iron, stainless steel, or ferrite. By this, the permanent magnet 36
A magnetic circuit is formed between the permanent magnet 36 and the valve seat 34, reducing magnetic resistance and increasing the magnetic attraction between the permanent magnet 36 and the valve seat 34. Therefore, even if a permanent magnet with inferior performance or a small size is used, a sufficient magnetic attraction force can be obtained. Still, such magnetic.

In order to configure the circuit, as shown in FIG. 7, a member 40 made of a ferromagnetic material, which integrates the valve seat and the casing and is set at a predetermined temperature at one point, may be used. This reduces the number of parts and improves ease of assembly.

Effects of the Invention As described above, according to the present invention, a valve device 71 is provided independent of the nozzle, and this valve device is made of a ferromagnetic material with a permanent magnet and a single point set at a predetermined temperature. By combining the valve seat, stopper, and spring, and arranging the spring around the permanent magnet, the water tank can be attached and removed from the vaporization chamber side, making it possible to make the valve device more compact and unitized. The temperature of water dripping from the water tamp to the vaporization chamber can be controlled without changing the basic configuration of the steam iron, making it easy to assemble.

It is possible to provide a steam iron with excellent portability.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a conventional steam iron, FIG. 2 is a partially cutaway sectional view of a steam iron showing an embodiment of the present invention, FIGS. 3 and 4 are sectional views of the same main part, and FIG. Figure 6,
FIGS. 6 and 7 are sectional views of main parts showing other embodiments of the present invention. 21... Base, 23... Vaporization chamber, 2
7...Water tank, 28...Nozzle, 3
Q... Needle valve, 34... Valve seat, 36... Permanent magnet, 37... Spring, 38... Stopper, 39. 39'. 39″・・・Casing. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 4 Figure 2 Figure 4'I2 Figure 3 Figure 4 N Figure 5 Figure 6 Figure 7 sttox

Claims (3)

[Claims] (1) A base, a vaporization chamber provided in the base, and a nozzle having a valve that can be opened and closed by external operation. It is equipped with a water tank that is detachable from the vaporization chamber side that supplies water to the vaporization chamber through this nozzle, and a pulp device that controls water supply from the water tank to one vaporization chamber. A valve seat made of a ferromagnetic material with one point set at a predetermined temperature and fixed in thermal association with the vaporization chamber, a permanent magnet having a valve function, a spring disposed around the permanent magnet, and the permanent magnet and the spring. A stopper is provided for regulating the position of the permanent magnet when the casing containing the ferromagnetic material expands and contracts, and the opening/closing operation of the pulp device is performed by the force relationship between the magnetic force acting between the ferromagnetic material and the permanent magnet and the spring. Steam iron. (2) The steam iron according to claim 1, wherein the casing of the pulping device is made of a ferromagnetic material. (3) The steam iron according to claim 1, wherein the valve seat of the pulping device and the casing are integrally formed of the same material.