JP2010029409A - Heat suppliable heat insulation container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating device having a structure such that an object to be heated does not easily get cold even when heating is stopped, while the object to be heated radiates heat and gets cold normally when heating is stopped, when heating the object to be heated. <P>SOLUTION: By providing a heat conductor of a bimetal structure having such a function that a contactor for transmitting heat is brought into contact with the object to be heated only while heating is performed and the contactor is separated from the object to be heated when heating is stopped in the two-layer structure of a vacuum bottle, heat conduction is blocked when heating is stopped and heat radiation from the object to be heated is prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a device that combines the function of opening and closing heat conduction and the heat retaining function of a thermos bottle by utilizing the property of thermal expansion of a solid that expands as the temperature rises.

  As a technique using thermal expansion of solid, there is a technique called bimetal having a switch function of opening and closing at a constant temperature by bonding two kinds of metals having different linear expansion coefficients. In addition, as a heat retaining function, there is a thermos technology. The structure of the thermos has a double structure of an inner layer and an outer layer, and a space is provided between the inner layer and the outer layer, and this space is evacuated.

  When a part of an object is heated, the heat diffuses from the high temperature side to the low temperature side, and finally reaches a uniform temperature. This phenomenon can be hindered if there is some special need.

  As an example of cooking, there are cases where it takes a long time to boil, or there is a case where it is desired to maintain a constant temperature so that the boiled food does not cool. In this case, if the heating reaches a certain temperature and then the heating is stopped, it starts to cool down, so the heating must be continued.

  In view of these circumstances, the present invention is configured so that the heat is transmitted only when heating is performed and the heat conduction from the heated object to the outside is interrupted if the heating is stopped. It is intended to provide a heat retaining container capable of supplying heat having a function of preventing heat dissipation.

  In addition, the heat transfer container is configured so that the cold temperature is transmitted only when cooling, contrary to the above example, and the heat conduction from the object to be cooled to the outside is interrupted if the cooling is stopped. It is also possible to provide a function of preventing the object to be cooled from receiving heat.

  By attaching a heat conductor with a bimetallic structure in which dissimilar metals are bonded to the outer space side of the double-structure space of the thermos, the heat conductor contacts the inner layer only when the outer layer side is at a certain temperature or above. Thus, there is provided a heat insulating container capable of supplying heat that allows heat to be conducted between the outer layer and the inner layer.

  The heat insulating container has a double structure of an inner layer and an outer layer, and a space is provided between the inner layer and the outer layer, and this space is evacuated.

  A heat conductor is installed in the space between the inner layer and the outer layer.

  The heat conductor has a bimetallic structure in which two types of metals having different linear expansion coefficients are bonded together.

  The heat conductor is attached to the outer layer side.

  The heat conductor is shaped so as to come into contact with the inner layer when the temperature of the outer layer exceeds a certain temperature and above, and away from the inner layer when it exceeds the opposite side.

  This takes advantage of the thermal expansion properties of the metal.

  When the shape of the heat conductor is linear at normal temperature, the shape is such that an arc is drawn with the metal side having a large linear expansion coefficient facing outward as the temperature rises. The radius of the arc decreases with increasing temperature.

  When the shape of the heat conductor is an arc shape at room temperature and the linear expansion coefficient of the inner metal is larger than the linear expansion coefficient of the outer metal, the radius of the arc increases and the central angle decreases as the temperature rises.

  Using this change in shape due to the difference in the coefficient of linear expansion between the two types of metal in the heat conductor, the shape of the heat conductor at room temperature is determined so that it contacts the inner layer when the temperature rises above a certain level. Keep it.

  When using a heat conductor that is shaped to contact the inner layer when the outer layer is heated, the heat conductor contacts both the outer layer and the inner layer while heating the outer layer, and heat from the outer layer. Is transmitted to the inner layer.

  When the heating is stopped, the temperature of the outer layer decreases, so that the heat conductor that has been in contact with both the outer layer and the inner layer is separated from the inner layer.

  By configuring the heat conductor in this way, heat can be transmitted from the outer layer to the inner layer only when heating.

  The outer layer and inner layer of the thermos are thermally connected only when heat is supplied (heated or cooled) to the outer layer, and when the heat supply to the outer layer is stopped, both are thermally separated. When the supply of heat to is stopped, heat can be prevented from being diffused from the inner layer to the outer layer.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  1-4 is a figure explaining the example which applied the heat retention container which can supply the heat by this invention to the pan.

  FIG. 1 shows a heat conductor by a triangular projection, and has a structure in which a material 1 having a high coefficient of linear expansion and a material 2 having a coefficient of linear expansion lower than that of the material 1 are bonded together.

  FIG. 2 shows a pan having a heat retaining function. The pan has a double structure and the inside is evacuated. The heat conductor 3 is installed in this vacuum part.

  The heat conductor 3 is attached to the outer layer 5 and installed in a space between the outer layer 5 and the inner layer 6 of the pan.

  The contact 4 attached to the heat conductor 3 is for transferring the heat transferred from the outer layer 5 to the heat conductor 3 to the inner layer 6.

  FIG. 3 is a plan view with the inner layer 6 of the pan removed, and a plurality of heat conductors 3 and contacts 4 are installed along the circumference of the pan.

  As shown in FIG. 2, when the outer layer 5 is not heated, there is a gap between the contact 4 and the inner layer 6.

  FIG. 4 is a diagram in the case where the outer layer 5 of the pan is heated, and the heat conductor 3 is extended to the side of the material 1 larger than the side of the material 2 by heating, so that the tip portion is lifted and attached to the heat conductor 3. The contact 4 comes into contact with the inner layer 6.

  In this way, when the outer layer 5 is heated, the outer layer 5 and the inner layer 6 are thermally connected via the thermal conductor 3, and heat applied to the outer layer 5 is supplied to the inner layer 6.

  When the heating to the outer layer 5 is stopped, the temperature of the heat conductor 3 decreases and the shape returns to the original shape, so that the contact 4 is separated from the inner layer 6.

    In this way, the outer layer 5 and the inner layer 6 are thermally blocked when the outer layer 5 is not heated. For this reason, even if heating is stopped, the effect that the temperature in a pan cannot fall easily can be taken out.

  The surface of the outer layer 5 with respect to the inner layer 6 can be subjected to bright plating to suppress heat radiation due to radiant heat.

The figure which represented the heat conductor which comprises a part of this invention by the triangulation method Illustration when the present invention is applied to a pan ... When the pan is not exposed to fire Explanatory drawing when the present invention is applied to a pan: a plan view with the inner layer 6 removed Illustration when the present invention is applied to a pan ... When the pan is set on fire

Explanation of symbols

1 Material with high linear expansion 1
2 Material 2 with a lower linear expansion coefficient than Material 1
3 Thermal Conductor 4 Contact 5 Outer Layer 6 Inner Layer

Claims (1)

Attach a bimetallic heat conductor with a dissimilar metal bonded to the outer layer side between the two layers of the thermos structure, and when heat is supplied to the outer layer, the heat conductor contacts the inner layer and transfers heat from the outer layer to the inner layer. If there is no heat supply, a heat-retaining container configured to block heat radiation from the inner layer by separating the heat conductor from the inner layer.

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