JPS5939158B2 - steam iron - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steam iron that can be used by ejecting steam onto the lower surface of the base.

This type of iron has a vaporizing chamber formed on the top surface of a base equipped with a heater, water from a water storage tank is dripped into this vaporizing chamber, and this dripping water is evaporated by the conductive heat of the heater and turned into steam. The steam is guided to the lower surface of the base and ejected.

However, in the past, the water storage tank was either in direct contact with the base or opposed to it very closely, and as a result, a large amount of heat from the base was transferred through conduction or radiation, resulting in overheating of the water storage tank and damage to its internal contents. There was a risk that the water would boil and spray out from the tank's water inlet, or that the boiling pressure would cause the valve mechanism between the tank and the vaporization chamber to malfunction, causing the water to inadvertently spray out from the bottom of the base. .

In particular, when the iron body is placed in a free-standing state and the water in the water tank accumulates near one end, when the iron body is turned horizontally for use, water suddenly flows into the overheated part of the water tank. This caused the above-mentioned phenomenon to occur more significantly, posing a problem in terms of safety.

In view of the above, this invention integrally forms a guide passage on the upper surface of the vaporization chamber, guides the steam in the vaporization chamber to the lower surface of the base via this guide passage, and also provides a water storage tank on the upper surface of the guide passage. This is intended to prevent overheating of the water storage tank by isolating the base and the water storage tank via the guide passage and by covering the upper surface of the base with a heat shielding cover.

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

In the figure, 1 is a base, and a heater 2 is cast into this base 1.

A recess 3 is formed in the lower surface facing the heater 2, and a distribution plate 4 is attached to this recess 3 via screws 5.
A gap between the distribution plate 4 and the recess 3 forms a distribution groove 6.

A recess forming a vaporization chamber 7 is carved in the upper surface of the base 1, and a dispersion hole 8 and a concentration hole 9 are respectively bored adjacent to the recess.

The dispersion hole 8 communicates with the dispersion groove 6, and the concentration hole 9 opens to the lower surface side of the base 1 through the through hole 10 of the dispersion plate 4.

The upper surface of the base 1 includes the vaporization chamber 7, a dispersion hole 8, and a concentration hole 9.
A cover plate 11 is attached to the top of the cover plate 11, and a wall 12 and a closing plate 13 covering the top of the wall 12 are provided on the top surface of the cover plate 11, thereby creating an airtight guide passage 14. It is configured.

The guide passage 14 communicates with the vaporization chamber 7, the dispersion hole 8, and the concentration hole 9 through the through holes 15, 16, and 17, respectively.

Reference numeral 18 denotes a heat shielding cover made of metal, which covers the entire upper surface of the base 1 and positions the guide passage 14 in its interior space.

A main body cover 20 having a handle 19 is attached to the upper surface of this cover 18.

The main body cover 20 has an open lower surface, and the periphery of the opening faces the periphery of the upper surface of the heat shield cover 18 with a gap 21 in between.

The main body cover 20 is fixedly supported on the heat shield cover 18 by screws or the like at appropriate locations.

Reference numeral 22 denotes a water storage tank that is housed in the main body cover 20 without contacting the heat shielding cover 18. A water inlet 23 that opens to the front surface of the main body cover 20 is provided at the top of one end of the tank 22. water can be injected or drained.

A part of the lower surface of this water storage tank 22 passes through the heat shield cover 18 in a loosely inserted state and is attached to the closing plate 13 with a heat insulating packing 24.2.
They are in contact via 4.

A dripping tube 25 extends from this contacting portion through the guide passage 14 and reaching into the vaporization chamber γ.The extending end surface of the dripping tube 25 has a tapered shape, and a dripping hole 26 is drilled.

One end of a first opening/closing rod 27 is interposed within this dripping cylinder 25, and the other end thereof penetrates the wall surface of the water storage tank 22 and projects upward.

The protruding end connects to a U-shaped plate spring 2 that connects to a first operation button 28 that is provided on the top surface of the main body cover 20 so as to be able to be operated up and down.
They are connected via 9.

This opening/closing rod 21 is always urged upward by a spring 30, and this urging force causes the operation button 28 to be pressed against the main body cover 2.
It protrudes elastically from the top surface of 0.

By pressing the operating button 28 against the spring 30, the lower end of the opening/closing rod 27 closes the drip hole 26, and this state can be maintained until the operating button 28 is operated again. It has become.

Reference numeral 31 denotes a second opening/closing rod that is provided parallel to the first opening/closing rod 27, and the upper end of this lever is connected to a second operation button 33 via a leaf spring 32 in the same manner as the first opening/closing rod 27. In addition, the lower end penetrates the water storage tank 22 to reach the inside of the guide passage 14, and at the tip thereof, there is an on-off valve 34 facing the through hole 16 so as to be able to come into contact with and separate from it.
have.

This second opening/closing rod 31 is always urged upward by a spring 35, and this urging force causes the operation button 33 to elastically protrude from the upper surface of the main body cover 20.

By pressing the operating button 33 against the spring 35, the opening/closing valve 34 closes the through hole 16, and this state can be maintained until the operating button 33 is operated again. ing.

The iron having the above structure can be used in the following three ways.

That is, the first case is when both the drip hole 26 and the through hole 16 are kept open.

In this case, the water in the water storage tank 22 drips sequentially from the drip hole 26, and is vaporized in the vaporization chamber γ by the heat of the heater 2 to become steam.

This steam flows into the guide passage 14 through the through hole 15, and also flows through the passage 14 to the dispersion hole 8.
The water is divided into the concentration hole 9 and ejected from the dispersion groove 6 and the through hole 10, respectively.

Therefore, in this case, the steam can be diffused over a wide range of clothing and the like.

The second case is when the drip hole 26 is held in an open state and the through hole 16 is held in a closed state.

In this case, steam is ejected only from the through holes 10, so that the steam can be concentrated on localized areas such as clothes.

The third case is when the drip hole 26 is kept in a closed state. In this case, water does not drip from the drip hole 26, so no steam is generated, and therefore no steam is generated from either the through hole 10 or the dispersion groove 6. There is no steam gushing out.

That is, it is a dry usage mode. In this case, the through hole 16 may be in either an open state or a closed state.

A cover plate 11 and a guide passage 14 are located between the base 1 and the water storage tank 22.
4 separates the base 1 from the water storage tank 22, so that the heat of the base 1 is not directly conducted to the water storage tank 22.

A part of the heat of the base 1 is conducted to the heat shield cover 18, but this heat is sequentially dissipated from the outer surface of the heat shield cover 18 and flows out to the outer periphery directly or through the gap 21.

Radiant heat from the base 1 is blocked by the heat shield cover and does not reach the water storage tank 22, and only causes convection within the heat shield cover 18.

In this way, the water storage tank 22 is hardly affected by the heat of the base 1, and therefore it is possible to reliably prevent it from overheating.

The steam generated in the vaporization chamber 7 is ejected to the lower surface of the base 1 through the guide passage 14, but since the guide passage 14 is in direct contact with the upper surface of the base 1, this passage 14
The steam flowing through the base 1 absorbs the heat of the base 1 well, and therefore does not inadvertently condense into water droplets, and is always completely vaporized and ejected onto the lower surface of the base 1.

Normally, in devices that guide steam from the vaporizing chamber to the bottom side of the base through a passage, the steam is cooled while flowing through the passage, and a portion of it condenses, causing water droplets to form water scale, etc. At the same time, the steam may flow out to the lower surface of the base and contaminate clothing, etc. However, in the present invention, as described above, there is no condensation of steam, so the above-mentioned problems can be reliably prevented.

As explained above, in this invention, a lid plate is provided at the opening on the upper surface of the vaporizing chamber, a guide passage is formed on the upper surface of this lid plate, and the steam generated in the vaporizing chamber is transferred to the bottom surface of the base through this passage. At the same time, the water storage tank is isolated from the upper surface of the guide passage via the guide passage, and a heat shielding cover is attached to the upper surface of the base to prevent the water storage tank from overheating and prevent accidental damage. This has the excellent effect of being able to reliably prevent boiling water spouting accidents, greatly improving safety, and simultaneously preventing the outflow of water droplets, water scale, etc.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway sectional view showing an embodiment of the present invention, and FIG. 2 is a bottom view thereof. 1... Base, 2... Heater, γ...
...Vaporization chamber, 14...Guidance passage, 18...
...Heat shield cover, 2.2...Water storage tank.

Claims (1)

[Claims] 1 A base equipped with a heater, a vaporizing chamber formed on the upper surface of this base, a lid plate attached to an opening on the upper surface of this vaporizing chamber, and a hole formed on the upper surface of this lid plate and a hole in the lid plate. A guide passage that guides the steam in the vaporization chamber to the bottom side of the base through a provided through hole, and a guide passage that is provided on the top side of this guide passage to be separated from the base via this passage and that is used to direct the steam to the vaporization chamber. A steam iron comprising: a water storage tank that drips water; and a heat shielding cover that is placed between the base and the water tank and covers the upper surface of the base.