JPH058039B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The invention relates to an iron that uses a heat storage material to suppress the temperature drop 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 extremely 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, another consideration must be given to its heat transfer 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, so the performance of the iron is greatly influenced by this heat transfer characteristic.

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 using aluminum casting, there are manufacturing limits to increasing the height of the protruding members molded integrally with the base or increasing the density by increasing the number of protruding members molded integrally with the base. It is difficult to obtain heat transfer properties, and the time required for heat to be stored in the heat storage material becomes longer, resulting in a longer waiting time before ironing can be done, or the amount of heat stored in the heat storage material is not sufficiently dissipated and ironing is delayed. There were some problems, such as a shortening of the available hanging time.

Moreover, even if a protruding member with a high height and high density could be manufactured, it was not easy to efficiently fill the protruding member with a heat storage material, and the productivity was not good.

Means for Solving the Problem In order to solve this problem, the present invention provides a flat heat storage element in which a heat storage material containing pentaerythritol as a heat storage substance is covered with a fluorine resin film.
The heat storage element is clamped between the inner bottom surface of the storage chamber provided in the base and the base upper member so that the inner bottom surface of the storage chamber and the flat plate surface of the heat storage element are in contact with each other.

Effect: With this configuration, the bottom surface of the storage chamber provided in the base and the base upper member each contact the flat plate surface of the flat heat storage element and conduct heat over a wide area, thereby improving heat transfer characteristics. In addition, even when a large amount of heat storage material is required, the thickness of the heat storage element can be reduced by stacking multiple flat heat storage elements and providing a heat transfer plate between each heat storage element that is thermally connected to the base or base member. does not become large and the heat transfer characteristics deteriorate.

Furthermore, since the heat storage element itself can be handled as a unit component, productivity is also excellent.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. In FIGS. 1 to 3, reference numeral 1 denotes a base having a storage chamber 2 on its upper surface, in which a heating element 3 is embedded. Reference numeral 4 denotes a base member on which a vaporization chamber 5 is integrally provided. Reference numeral 6 denotes a flat heat storage element constructed by covering a heat storage material 7 containing pentaerythritol as a heat storage substance with a fluorocarbon resin film 8. Two heat storage elements 6 are stacked one on top of the other, and are clamped in contact between the inner bottom surface 2a of the storage chamber 2 and the base upper member 4, which match the heat storage elements 6. Reference numeral 9 denotes a heat transfer plate made of a metal plate such as aluminum, which is provided in contact between the two heat storage elements 6, and whose entire circumference is clamped between the base 1 and the base upper member 4. thermally connected. 10 transfers water stored in a tank 11 to a vaporization chamber 5
It is a drip nozzle for supplying water to the vaporizing chamber 5, and is connected to the vaporizing chamber 5 through a packing 13 attached to a vaporizing chamber lid 12 covering the upper part of the vaporizing chamber 5. 14 is handle 1
An opening/closing rod interlocked with a steam button 16 provided on the top of the drip nozzle 5 moves up and down to supply and stop water from the dripping nozzle 10. Reference numeral 17 denotes a steam ejection hole provided on the bottom surface of the base 1, communicating with the vaporization chamber 5 via a steam passage 18, and ejecting steam generated in the vaporization chamber 5. Reference numeral 19 denotes a power supply terminal connected to the heating body 3 via a temperature controller (not shown), and connected to a power source to supply power. 20
is a temperature control lever connected to a temperature controller, and base 1
Used to set the temperature.

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

When a power supply is connected to the power supply terminal 19 and electricity is applied, the heating body 3 generates heat, and the storage chamber 2 of the base 1, the base upper member 4, and the heat transfer plate 9 clamped thereto are heated. At this time, the heat storage elements 6 are clamped in contact between the inner bottom surface 2a of the storage chamber 2 and the base upper member 4, and are also in contact with the heat transfer plate 9, so that each heat storage element 6 is wide from both the upper and lower sides. The area is heated, and heat is efficiently stored in the internal heat storage material 7 in a short time. The heat storage plate 7 that has stored heat starts dissipating heat when the power source is disconnected from the power supply terminal 19, and the heat is efficiently transmitted to the base 1 and the base upper member 4 for the same reason as described above, and the temperature drop is suppressed for a long time. Therefore,
In this state, ironing can be performed, and the power cord does not get caught on clothes or limit the range of operation due to the power cord, improving usability. Also, when generating steam,
When the steam button 16 is operated to open the opening/closing rod 14, water is supplied from the dripping nozzle 10 to the vaporizing chamber 5 through the packing 13, and the steam generated here is passed through the steam passage 18 to the steam outlet 17.
It is ejected from. At this time, a large amount of heat is taken away from the vaporization chamber 5, but since the vaporization chamber 5 is provided integrally with the base upper member 4 over a large area, stable steam can be maintained for a long time without a sudden temperature drop. Obtainable. Furthermore, by providing the vaporization chamber 5 on the base upper member 4, the temperature of the bottom surface of the base 1 is not affected by the temperature of the vaporization chamber 5, 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 6 will be explained.

As shown in FIG. 4, for example, the heat storage element 6 can be manufactured by sandwiching a heat storage material 7 press-molded into a flat plate shape between two fluorocarbon resin films 8, and then forming a fluorocarbon resin film. 8 all around 8a
There is a method of bonding them together using heat welding or the like. Alternatively, a method may be used in which the heat storage material 7 is filled and sealed into a bag-shaped fluorine-based resin film 8 and then molded into a flat plate. It's fine as long as it's there. The thickness of the flat heat storage element 6 is desirably 7 mm or less in view of the heat conduction of the heat storage material 7 and the time required for heat storage.

Such a heat storage material 7 is formed into a fluorocarbon resin film 8.
By covering the heat storage element 6, it is possible to prevent pentaerythritol, which is a heat storage substance, from deteriorating due to contact with air or metals and causing a decrease in heat storage capacity.
Productivity is also excellent because it can be handled as a unit part.

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 7, the deterioration of the pentaerythritol can be further suppressed and its life as a heat storage material can be extended. In both cases, the moldability and mold releasability when press molding the heat storage material 7 are also improved.

Effects of the Invention As described above, the present invention provides a flat heat storage element in which a heat storage material containing pentaerythritol as a heat storage material is covered with a fluorine-based resin film, between the inner bottom surface of a storage chamber provided in a base and the base upper member. By clamping the heat storage element so that the inner bottom surface of the storage chamber and the flat plate surface of the heat storage element are in contact with each other, there is no need to provide protrusions inside the storage chamber, and even when using a large amount of heat storage material. Because it is only necessary to install a heat transfer plate, sufficient heat transfer between the heat storage material and the base can be ensured even with the conventional aluminum casting method.This means that the waiting time before ironing can be started is shortened, and the power cord To provide an iron that can be ironed for a long time without ironing and has excellent productivity.

[Brief explanation of drawings]

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 the main part, and Fig. 4 is a heat storage element of the same. FIG. 2 is a sectional view showing a manufacturing method. DESCRIPTION OF SYMBOLS 1... Base, 2... Storage chamber, 4... Base upper member, 5... Vaporization chamber, 6... Heat storage element, 7... Heat storage material, 8... Fluorine resin film, 9... Heat transfer Board.

Claims (1)

[Scope of Claims] 1. A flat heat storage element in which a heat storage material containing pentaerythritol as a heat storage substance is covered with a fluorine-based resin film, a base provided with a storage chamber that matches the heat storage element, and an inner bottom surface of the storage chamber. An iron comprising a base-like member that clamps the heat storage element between the base and the flat plate surface of the heat storage element in contact with the flat plate surface of the heat storage element. 2. The iron according to claim 1, wherein a plurality of heat storage elements are laminated, and a heat transfer plate thermally connected to the base or the base upper member is provided between each heat storage element. 3. The iron according to claim 1 or 2, wherein the base upper member has a vaporization chamber. 4. The iron according to claim 1, 2, or 3, wherein the heat storage material is pentaerythritol mixed with an olefin polymer, a fluorine polymer, or a petroleum wax alone or in a mixture.