JPS6016395Y2 - steam iron - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for converting water into steam in a steam iron.

Among steam irons, recently there are steam irons with removable water tanks for the convenience of filling and draining the water tank, but the structure of the water tank is that the water inlet for filling and draining water is at the top, and the water tank is at the bottom. It has a small hole that adjusts the amount of water passing through the water tank and allows it to drip, and is equipped with a drip nozzle with a cylindrical tip so that water droplets can easily form into a spherical shape, and this small hole is closed. For this reason, there are many models in use that have a structure that prevents water from spilling even if the water tank is detached and carried around.

Generally, when attaching this water tank to the iron body,
The dripping nozzle is connected to the steam conversion structure by fitting a heat-resistant rubber gasket or the like, and from this gasket to the vaporization chamber that converts water into steam, the dripping nozzle is connected using a cylindrical member provided directly below the dripping nozzle. Water is dripped from this cylindrical member onto the back of the base of the vaporizing chamber, which is at a high temperature, to convert it into steam, and through the steam passage, the steam is ejected from the steam outlet to the ironing surface. It has become.

However, since the inner diameter of the cylindrical member is generally larger than the inner diameter of the dripping nozzle cylinder, the ice flowing out from the small hole of the dripping nozzle becomes spherical at the tip of the cylinder due to surface tension. However, it does not come into contact with the inner wall of the cylindrical member connected to the vaporization chamber, and falls into the forced vaporization chamber.

As a result, water droplets scatter due to the impact and adhere to the side walls and soil walls of the vaporization chamber, which have not yet reached the appropriate temperature for steam conversion, making it difficult to convert into steam.If a large number of water droplets adhere and collect, they fall to the bottom of the vaporization chamber and rapidly vaporize. In some cases, stable steam conversion is not achieved, and ironing becomes unstable, with the amount of steam ejected onto the surface becoming uneven, and there is a drawback that a stable amount of steam cannot be supplied to the fabric. Ta.

The present invention eliminates these drawbacks and provides a structure that can supply a stable amount of steam.

An embodiment of the present invention will be described with reference to the drawings.

1 is a water tank that can be attached and removed from the iron body, and upper tank 2
The water tank 1 is formed by fusing and fixing the lower tank 3 by vibration welding or the like, and a water inlet 4 for pouring and draining water is provided at the upper front side of the water tank 1.

In addition, a drip nozzle 8 has a small hole 6 that adjusts the amount of water 5 that passes through the water tank 1 and allows the water to drip, and has a cylinder 7 at the tip so that water droplets can easily form into a spherical shape. The drip nozzle fixing base 10 is fixed to the lower part of the water tank 1 with screws or the like.

Further, a valve rod 11 for opening and closing the small hole 6 of the dripping nozzle 8 is provided at the top of the drip nozzle 8, passing through the water tank 1, and a spring 12 for raising the valve rod 11 is provided. An operation button 13 is provided.

Reference numeral 14 denotes a base with a built-in heating element 15, and a vaporization chamber 17 and a steam passage 18 are formed at the upper front side through a base cover 16. A communicating steam outlet 20 is provided.

A cylindrical member 21 connecting the dripping nozzle 8 and the vaporization chamber 17 is provided on the upper part of the base cover 16 via a packing so that the center lines of the dripping nozzle 8 and the vaporizing chamber 17 are aligned with each other.
The inner diameter B of the dripping nozzle 8 is smaller than the inner diameter A of the cylinder 7 of the dripping nozzle 8 .

A heat-resistant rubber packing 24 having a fitting cylinder 23 into which the drip nozzle 8 is fitted when the water tank 1 is attached is fixed to the upper part of the cylindrical member 21.

Further, between the base 14 and the water tank 1, a fixing plate 25 for fixing the water tank 1 is fixed to a cover 26 fixed to the base 14 with screws or the like.

With the structure of this embodiment, water 5 for steaming is injected from the water inlet 4 into the water tank 1 separated from the iron body and stored in the water tank 1.

At this time, the small hole 6 of the dripping nozzle 8 is closed by the valve stem 11, and in this state it is attached to the iron body, the lower surface of the tank is in contact with the fixing plate 25, and the dripping nozzle 8 is inserted into the fitting cylinder of the heat-resistant rubber gasket 24. The water tank 1 is inserted into the water tank 23 and sealed with the outside by fitting, and the water tank 1 is fixed with a lock button 27 so that it cannot be easily removed.

By operating the small hole opening/closing operation button 13, the valve stem 11 is raised by the return force of the spring 12, and the small hole 6 is opened.

The water 5 in the water tank 1 passes through the small hole 6, travels through the cylinder 7, and at the tip becomes spherical due to surface tension, and when it grows large and its own weight becomes greater than the surface tension, as shown in Figure 2. It separates and becomes water droplets 28 and falls.

At this time, it is clear from experiments that the inner diameter A of the cylinder 7 and the outer diameter of the water droplet 28 are approximately the same.

The detached water droplet 28 falls to the upper entrance of the cylindrical member 21, but since the inner diameter B of the cylindrical member 21 is smaller than the outer diameter of the water droplet 28, it comes into contact with the water droplet 28, travels along the inner wall of the cylindrical member 21, and is similarly affected by surface tension at the tip. The base 1 in the vaporization chamber 17, which is heated to a high temperature by the heating element 15, detaches and falls due to its own weight as the water 5 gradually lengthens into a spherical shape and passes through it continuously.
4 It comes into contact with the back and is converted into steam.

In this way, the water droplets falling from the tip of the dripping nozzle 8 do not fall directly into the vaporization chamber 17, so there is less impact in the vaporization chamber 17, and the side walls and earthen walls of the vaporization chamber 17 do not reach the high temperature necessary for steam conversion. Steam is converted to steam on the back side of the base 14 of the vaporization chamber 17, which is always at a high temperature.

The converted steam passes through the steam passage 18 and is ejected from the steam outlet 20 onto the ironing surface 19, and the steam becomes stable.

Further, in forming the cylindrical member 21, it can be integrated with other parts such as being integrated with the base cover 16.

According to the present invention, there is no problem of water droplets falling into the vaporizing chamber and scattering onto other cars, and a steam iron that can supply stable steam to fabrics and iron fabrics evenly can be obtained.

Further, by providing the drip nozzle and the cylindrical member on the same center line, there is an advantage that assembly can be facilitated.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the main part of the steam generation mechanism of a steam iron according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the main part of the steam conversion structure of FIG. 1. 7...Cylinder, 21...Cylindrical member, A.
...Inner diameter of cylinder 7, B...Cylindrical member 21
inner diameter of

Claims (1)

[Scope of utility model registration request] In a steam iron having a mechanism in which a drip nozzle having a cylindrical tip and a small hole is provided at the bottom of the water tank, and the water tank and the steam conversion structure are communicated by a cylindrical member fixed to the iron base. , cylindrical member 21
A steam iron characterized in that an inner diameter B of the cylinder 7 is smaller than an inner diameter A of the cylinder 7.