JPS61196999A - 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 Industrial Application The present invention relates to an iron that uses a heat storage material to suppress a drop in the temperature of the base.

Conventional technology In recent years, a heat storage material has been stored in a storage chamber provided in the base of an iron to suppress the drop in temperature of the vaporization chamber when applying water droplets to the vaporization chamber and to prevent water droplets from ejecting from the base surface. It is desired to develop an iron that improves operability by disconnecting the power supply during ironing work.

As a result of our study as a heat storage material for use in irons,
Pentaerythri in terms of heat storage amount and heat storage temperature) -A/ (
Pentaerythritol) is the most suitable.

This is because pentaerythritol undergoes a crystal transition at 188°C, and the latent heat of transition at this time is extremely large, approximately 3ooJ/g. This is because it is suitable for products with a large amount of heat.

Problems to be Solved by the Invention In an iron that uses a heat storage material to suppress the temperature drop in the base, in order for the heat storage material to be effective, the heat storage material and the base must have excellent thermal conductivity. I'm worried. If this thermal conductivity is poor, even if the iron is energized and the base is heated, sufficient thermal energy will not be stored in the heat storage material, which will increase the waiting time to disconnect the iron from the power source and use it, or vice versa. When using the iron disconnected from the power source, even though the heat storage material is high enough to iron, the temperature of the base drops drastically, shortening the usable time of the iron, or Similarly, the temperature of the vaporizing chamber that has been heated is drastically reduced, resulting in problems such as a shortening of the available time for steam use.

Therefore, in order to improve the thermal conductivity between the heat storage material and the base, methods of providing a large number of heat transfer fins between the heat storage material and the base have been studied. However, pentaerythritol, which we have been considering as a heat storage material for irons,
As mentioned above, pentaerythritol is very suitable for ironing in terms of heat storage amount and heat storage temperature, but if it comes into long-term contact with metals such as aluminum and copper at high temperatures (over 200'C), pentaerythritol will degrade. Because of this, a configuration in which a large number of heat transfer fins are provided on an aluminum die-cast base to house the heat storage material has a problem in that the heat storage material deteriorates over a long period of use, resulting in a decrease in performance.

In view of the above-mentioned problems, the present invention improves the heat conduction between the heat storage material and the base, and suppresses the deterioration of the heat storage material using pentaerythritol as the heat storage material, thereby enabling long-term use.
Moreover, the present invention provides an iron that is suitable for mass production and suppresses a drop in the temperature of the base.

Means to solve problems The iron of the present invention achieves this objective.

A plurality of groove-shaped storage chambers are formed in the base, a heat storage material containing pentaerythritol as a heat storage material is molded into a shape that fits into the storage chambers, and the heat storage material is covered with a fluororesin and stored in the storage chamber. ing.

Effect: This configuration increases the surface area per unit weight of the heat storage material, improving heat conduction between the heat storage material and the base.Also, since the heat storage material is covered with a fluororesin that has good coexistence with pentaerythritol, Direct contact between the heat storage material and the metal storage chamber, which has poor coexistence, suppresses deterioration of the heat storage material and enables long-term use of the iron. Therefore, the heat storage material can be treated as a component, making it highly suitable for mass production.

EXAMPLE An example of the present invention will be described below with reference to two drawings.

FIG. 1 is a front sectional view of a base of an iron according to an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line A--A of the same. In Figures 1, 2, and 3, 1 is a base made of aluminum die-casting;
A plurality of groove-shaped storage chambers 2 and a vaporization chamber 3 for generating steam are formed in the upper part of the chamber. The storage chambers 2 have a tapered wrapper shape, and are provided in the base 1 as many as possible. Reference numeral 4 denotes a heat storage material using pentaerythritol as a heat storage substance, which is formed in advance into a shape that fits into the storage chamber 2, and the surface of the heat storage material 4 is covered with a fluororesin 6, and the fluororesin 5 is thermally welded to store heat. The material 4 is sealed and press-fitted into the storage chamber 2 as pellets 10. A heater 6 is embedded in the base 1 and is used to heat the heat storage material 4 housed in the base 1 and the storage chamber 2. Reference numeral 7 denotes a vaporization chamber passage, which communicates the vaporization chamber 3 with the steam outlet 8. In addition, vaporization chamber 3. The vaporization chamber passage 7 is covered by a vaporization chamber lid, which is not shown. 9 is the storage compartment cover groove,
A storage chamber lid (not shown) is press-fitted into this groove to seal the storage chamber 2.

The operation of the iron configured as above will be explained below.

When the heater 6 is energized from a power supply section (not shown), the base 1 is heated δ by the heater 6 . At this time, base 1
Since the heat storage material 4 is press-fitted and housed in the elongated groove-shaped storage chamber 2 in the upper part of the storage chamber 2, the side wall of the storage chamber 2 acts on the heat storage material 4 like a heat transfer fin. That is, this configuration dramatically increases the surface area per unit weight of the heat storage material 4. Therefore, the heat storage material 4 receives more thermal energy per unit time than the heated base 1.

Heat can be stored in the heat storage material 41' in a short time. next.

If the heat storage material 4 stores enough heat, even if the power to the heater 6 is stopped, the base 1 will still be able to supply thermal energy more efficiently than the heat storage material 4 due to the above-mentioned configuration, so there is no need to energize the iron with a power cord or the like. S<.

Ironing can be done without a power cord, greatly improving operability. When it is desired to generate steam during ironing, water is dripped into the vaporizing chamber 3 from a water tank or the like, and steam is ejected from the spout 8 through the vaporizing chamber passage 7. At this time, the vaporization chamber 3 is also efficiently supplied with thermal energy δ from the heat storage material 4, so that stable steam can be obtained for a long time.

The results of testing the groove width of the storage chamber 2 are shown in FIG.

The horizontal axis of this figure is the groove width of the storage chamber 2, and the vertical axis is the heating time required for the entire heat storage material 4 to completely store heat. Here, heat storage material 4
We will explain the complete heat storage of The heat storage effect of the heat storage material 4 used in the embodiment of the present invention utilizes the latent heat of crystal transition of pentaerythritol, as described above. Therefore, complete heat storage indicates that all of the pentaerythritol in the heat storage material 4 has undergone crystal transition. Further, the set temperature shown in FIG. 4 is the temperature of the base 1 desired by the user, and the time to reach the set temperature is the time required to heat the base 1 to the set temperature. The set temperature used in this test was 1j200'C. As shown in the graph of FIG. 4, if the groove width is about 7 (words) or less, the heat storage material atri has completely stored heat when the center of the lower surface of the base 1 reaches the set temperature.

Since the user does not have to wait extra time to heat the heat storage material 4, it is preferable that the groove width is designed to be approximately 7 mm or less. If the groove is designed as the average value of the upper width and lower width of the groove, then the result will match the result shown in FIG. 4.

In addition, as shown in FIG.
By molding with a smaller value than the taber of the storage chamber 2, it is possible to prevent the fluororesin 6 from being damaged by rubbing against the inner walls and corners of the storage chamber 2 when the pellet foot 10 is press-fitted and stored in the storage chamber 2. <I'm here. Note that the shapes of the storage chamber 2 and the floor space 1o are not limited to those shown in this embodiment.
Any structure may be used as long as the pellet 1o fits into the storage chamber 2 and the intended purpose is achieved. Furthermore, the groove direction of the storage chamber 2 is changed to the second direction.
As shown in the figure, by making the base 1 as parallel as possible to the rear direction from the tip, the structure facilitates the supply of heat from the heat storage material 4 to the vaporization chamber 3 during steam generation, which requires the most thermal energy. It is said that

In this embodiment, since the heat storage material 4 is sealed with the fluororesin 6,
Since the storage chamber 2 made of aluminum die-casting and the heat storage material 4 do not come into direct contact, the pentaerythritol of the heat storage material 4 will not be accelerated by metals such as aluminum, and the heat storage material 4 (can be used for one period) Furthermore, by mixing an olefin polymer mel, a fluorine polymer, or a petroleum wax alone or in a mixture with the pentaerythritol of the heat storage material 4, deterioration of pentaerythritol due to oxygen at high temperatures can be prevented. In addition, by adding these contaminants to the heat storage material 4, the moldability of the heat storage material 4 and the releasability from a mold etc. can be improved1. It also improves mass productivity.

Furthermore, as a result of our investigation, the total amount of contaminants is as follows.

If the total amount with pentaerythritol is 1oO, then 1
It is preferable that the carbon number is 70 or less by weight, and it is more effective to use a carbon number of 16 or more for petroleum-based waxes and fuchs.

Effects of the Invention As described above, the present invention forms a plurality of groove-shaped storage chambers in the base of an iron, and molds a heat storage material containing pentaerythritol as a heat storage material into a shape that fits into the storage chambers.
By covering the heat storage material with fluororesin and storing it in the storage chamber, the heat storage material does not come into direct contact with the storage chamber made of metals with poor coexistence, making it possible to use the heat storage material for a long period of time. Since the heat conduction between the base and the heat storage material is dramatically improved, it is possible to provide an iron that suppresses the temperature drop of the base, which has a short heat storage time, and is easy to operate and can be used for a long time even when the power is disconnected. send Furthermore, in manufacturing this iron, the heat storage material can be treated as a unit component, which improves mass productivity, which has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a front cross-sectional view of the base of an iron according to an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG.
4 is a diagram showing the relationship between the groove width of the storage chamber and the heating time required for complete heat storage of the heat storage material, and FIG. 6 is a sectional view of the main part. 1...pace, 2...storage room, 4...
...Heat storage material, 6...Fluororesin. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--Heath Figure 1/-Heath 1°7. -1-9E8□Figure 4 Groove width [Bare air] Figure 5/---Base

Claims (2)

[Claims] (1) A plurality of groove-shaped storage chambers are formed in the base, and a heat storage material made of pentaerythritol, which is molded into a shape that fits into the storage chambers and covered with fluororesin, is housed in the storage chamber. iron. (2) The iron according to claim 1, wherein the heat storage material is pentaerythritol mixed with an olefin polymer, a fluorine polymer, or a petroleum wax alone or as a mixture.