JPH058040B2 - - Google Patents

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 Previously, so-called cordless irons have been developed, which contain a heat storage material in the base of the iron to suppress the temperature drop of the base, and improve operability by allowing the iron to be disconnected from the power source for ironing work. It is.

Pentaerythritol is the most suitable heat storage material for use in such irons in terms of heat storage amount, heat storage temperature, etc. Pentaerythritol has a crystal transition point at 188℃,
Because its latent heat of transition is very large, approximately 300 J/g,
By utilizing the heat dissipation of this latent heat of transition, it is possible to create a cordless iron that is compact and capable of ironing for long periods of time, and it also becomes easy to make a steam iron with a steam generation function that requires a large amount of heat cordless.

When this pentaerythritol is to be put to practical use as a heat storage material for irons, further consideration must be given to its heat transfer means and attachment means.

That is, the thermal conductivity of pentaerythritol itself is very low compared to metals and the like, and is comparable to that of general resins. Therefore, when pentaerythritol is housed in a base and used as a heat storage material, it becomes necessary to provide a heat transfer protruding member on the inner surface of a storage chamber formed in the base that accommodates the heat storage material. In particular, when a vaporization chamber is provided to generate steam, the amount of heat dissipated is large, and the performance of the iron is greatly influenced by this heat transfer characteristic. Furthermore, a means for attaching pentaerythritol to the base is required that can be easily attached while ensuring sufficient heat conductivity.

Problems to be Solved by the Invention However, when providing a protruding member on the inner surface of the storage chamber formed in the base in order to improve heat transfer characteristics, in the conventional method of molding the base by aluminum casting, it is necessary to There are manufacturing limitations to increasing the height of the protruding members molded in the mold, or increasing the density by increasing the number of protruding members, and it is difficult to obtain sufficient heat transfer characteristics. There were problems such as the waiting time until ironing became possible due to the longer time, and the amount of heat stored in the heat storage material not being sufficiently dissipated, resulting in a shorter ironing time.

Furthermore, even if a high-density protruding member with a high height could be manufactured, the conventional filling method was to heat and melt pentaerythritol, pour it into a storage chamber, and cool and solidify it. It was not easy to fill well, and productivity was not good in terms of loss due to evaporation during heating and production man-hours.

Means for Solving the Problem In order to solve this problem, the present invention fills and seals a heat storage material containing pentaerythritol as a heat storage substance between the upper and lower fluororesin film cases having uneven surfaces. a base and a base member each formed with an uneven surface that fits into an uneven surface of the heat storage element, and the heat storage element is thermally sandwiched between the base and the base upper member. The structure is as follows.

Effect With this configuration, the uneven portions of the base and base upper member that fit into the uneven shape of the heat storage element come into contact with the lower and upper surfaces of the heat storage element, respectively, improving heat transfer characteristics, and it is necessary to make these unevenness extremely large. disappears. In addition, a heat storage element in which a heat storage material is filled and sealed between fluorine-based resin films has excellent productivity because it can be handled as a single unit component.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. In FIGS. 1 to 3, 1 is a base in which a heating element 2 is embedded, and 3 is a base upper member in which a vaporizing chamber 4 is integrally provided, and each is made of aluminum die-casting. Reference numeral 5 denotes a heat storage material containing pentaerythritol as a heat storage substance, which is filled and sealed between two fluororesin film cases 6 formed into uneven shapes to form a heat storage element 7. The upper surface of the base 1 and the lower surface of the base upper member 3 are provided with uneven parts that fit with the uneven shape of the heat storage element 7, and the base 1 and the base upper member 3 clamp the heat storage element 7 in a contact state. Fixed. A drip nozzle 8 supplies water stored in a tank 9 to the vaporization chamber 4, and is connected to the vaporization chamber 4 via a packing 11 attached to a vaporization chamber lid 10 that covers the upper part of the vaporization chamber 4. Reference numeral 12 denotes an opening/closing rod which is interlocked with a steam button 14 provided at the top of the handle 13, and is moved up and down to supply and stop water from the drip nozzle 8. 15 is a steam ejection hole provided on the bottom surface of the base 1, which is interlocked with the vaporization chamber 4 via a steam passage 16;
The steam generated in the vaporization chamber 4 is spouted out. Reference numeral 17 denotes a power supply terminal connected to the heating body 2 via a temperature controller (not shown), and connected to a power source to supply power. Reference numeral 18 denotes a temperature control lever connected to a temperature controller, which is used to set the temperature of the base 1.

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

When a power source is connected to the power supply terminal 17 and electricity is applied, the heating body 2 generates heat and the base 1 and the base upper member 3 are heated. At this time, since the heat storage element 7 is fitted into the uneven shape and is clamped in contact between the base 1 and the base upper member 3, it is heated over a wide area from both the upper and lower surfaces, and Heat is efficiently stored in the internal heat storage material 5 in a short amount of time. The stored heat storage material 5 starts dissipating heat when the power source is disconnected from the power supply terminal 17, and the heat is efficiently transmitted to the base 1 and the base upper member 3 for the same reason as described above, thereby suppressing the temperature drop for a long time. Therefore, ironing can be carried out in this state, and the power cord does not get caught on clothing, and the operating range is not limited by the power cord, improving usability. In addition, when generating steam, when the steam button 14 is operated to open the opening/closing rod 12, water is supplied from the dripping nozzle 8 through the packing 11 to the vaporization chamber 4, and the steam generated here flows through the steam passage 16. The steam is ejected from the steam outlet 15 through the steam outlet. At this time, a large amount of heat is taken away from the vaporization chamber 4, but since the vaporization chamber 4 is provided integrally with the base upper member 3 over a large area, stable steam can be maintained for a long time without a sudden temperature drop. Obtainable. In addition, by providing the vaporization chamber 4 on the base upper member 3, the temperature of the bottom surface of the base 1 is not affected by the temperature of the vaporization chamber 4, and the temperature of the bottom surface of the base 1 partially decreases when steam is generated. There's nothing to do.

Next, the heat storage element 7 will be explained.

As shown in FIG. 4, for example, the heat storage element 7 can be manufactured by using two fluorine-based resin film cases 6 formed into uneven shapes by compression molding or vacuum molding, and using a heat storage element 7 that has been press-molded in advance. The material 5 is sandwiched and filled, and the fluorine-based resin film 6 is filled.
There is a method of bonding and sealing the entire circumference of the ear portion 6a by heat welding or the like. Further, as shown in FIG. 5, there is a method in which heat storage material 5 is press-filled into the recesses of a fluorine-based resin film case 6 molded into an uneven shape, and the tabs 6a are glued and sealed. It's okay.

In any case, the heat storage material 5 is filled between the fluorine resin film case 6 and sealed, and the heat storage element 7 is
By configuring this structure, pentaerythritol, which is a heat storage substance, is prevented from deteriorating when it comes into contact with air or metals, causing a decrease in heat storage capacity.At the same time, the heat storage element 7 can be treated as one unit component, which improves productivity quickly. It will be done.

In addition, by mixing an olefin polymer, a fluorine polymer, or a petroleum wax alone or in a mixture with the pentaerythritol of the heat storage material 5, the deterioration of the pentaerythritol can be further suppressed and its life as a heat storage material can be extended. The moldability and mold releasability when press molding the heat storage material 5 are also improved.

In this embodiment, a case has been described in which only one heat storage element 7 is used, but it goes without saying that the heat storage element 7 may be divided into two and used, for example, and the same effect can be obtained.

Effects of the Invention As described above, the present invention provides a heat storage element formed by filling and sealing a heat storage material containing pentaerythritol as a heat storage substance between upper and lower fluorine-based resin film cases each having an uneven surface, and It consists of a base and a base upper member each having an uneven surface that fits into the uneven surface of the element, and the heat storage element is thermally conductively clamped between the base and the base upper member to incorporate the heat storage element into the iron. By doing so, the heat storage material can be formed into a unit-shaped heat storage element having unevenness on the top and bottom surfaces, and the heat storage element can be easily ironed while ensuring sufficient heat conductivity to the base and the upper base member. can be incorporated into the system, resulting in excellent productivity. Furthermore, by clamping the heat storage element between the base and the base upper member, even if there is an uneven fitting part between the two, the heat storage element adapts to the uneven surfaces formed on the base and the base upper member, allowing the heat storage between them to be absorbed. It is possible to have sufficient contact with others.

In this way, sufficient heat conductivity between the heat storage material and the base is obtained, so the time required for ironing is shortened, and the ironing can be done for a long time without the need for a power cord, resulting in convenience and productivity. We can provide you with excellent irons.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of an iron according to an embodiment of the present invention, FIG. 2 is a partially cutaway sectional view of the same iron, FIG. 3 is an exploded perspective view of a main part of the same iron, and FIG.
FIG. 5 is a sectional view showing an example of a method for manufacturing a heat storage element. DESCRIPTION OF SYMBOLS 1... Base, 3... Base upper member, 4... Vaporization chamber, 5... Heat storage material, 6... Fluorine resin film, 7... Heat storage element.

Claims (1)

[Scope of Claims] 1. A heat storage element formed by filling and sealing a heat storage material containing pentaerythritol as a heat storage substance between upper and lower fluorine-based resin film cases each having an uneven surface, and an uneven surface of the heat storage element. 1. An iron comprising a base and a base upper member each formed with an uneven surface that fits into the iron, and the heat storage element is thermally sandwiched between the base and the base upper member. 2. The iron according to claim 1, wherein the base upper member is provided with a vaporization chamber. 3. The iron according to claim 1 or 2, wherein the heat storage material is pentaerythritol mixed with an olefin polymer, a fluorine polymer, or a petroleum wax alone or in a mixture.