JPH09238747A - Container for heat insulation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and inexpensively produce a container for heat insulation with high heat insulation efficiency. SOLUTION: This container is provided with a synthetic resin outer cylinder 3, a stainless steal inner cylinder 2, a heat insulating member 10 charged between the inner cylinder 2 and the outer cylinder 3, a synthetic resin lid body 5 for attachably and detachably closing an opening part 4 of the inner cylinder 2, and a heat insulating member 14 provided at the part of the lid body 5 for closing the opening part 4 of the inner cylinder 2 at least.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-retaining container which is mainly used when carrying drinking water outdoors such as at a picnic while keeping it warm.

[0002]

2. Description of the Related Art As a main heat-retaining container, for example, a vacuum heat-retaining layer is formed inside an outer cylinder, and a glass inner cylinder, which is mirror-finished by aluminum deposition, is provided on the inner surface of the heat-retaining layer. A so-called "thermo-flask" is generally known in which low-temperature or high-temperature drinking water is stored in a drinking-water storage container.

In such a thermos, since the inner cylinder is made of glass, it is weak against impact and has a problem in durability. Further, since the glass inner cylinder having the heat retaining layer is integrally fixed to the outer cylinder, when cleaning the inner cylinder, a relatively large outer cylinder must be used for cleaning, which is troublesome. There was also the problem that it took time and effort.

In order to solve the above problems, there is a stainless steel heat insulating container which is made of stainless steel into an inner and outer double cylinder having a heat insulating space, and the outer cylinder and the inner cylinder are integrated at the opening.

[0005]

In the above-mentioned stainless-made heat insulation container, the radiant heat radiated from the inner cylinder and the heat conduction from the opening are large, and the heat insulation efficiency is lowered due to the radiant heat and heat conduction. There was a problem.

Further, the outer cylinder and the inner cylinder must be formed by deep-drawing stainless steel, and the openings must be welded to be integrated, which requires a great deal of time and labor for the production and lowers the productivity. Not only that, but there was also the problem that the manufacturing cost would increase. The present invention has been proposed in view of the above-mentioned problems, and an object thereof is to make it possible to easily and inexpensively manufacture a heat retaining container having high heat retaining efficiency.

[0007]

In order to achieve the above object, a heat insulating container according to the present invention comprises an outer cylinder made of synthetic resin,
An inner cylinder made of stainless steel, a heat insulating member filled between the inner cylinder and the outer cylinder, a synthetic resin lid for detachably closing the opening of the inner cylinder, and at least the inner cylinder of the lid. A heat insulating member provided in a portion that closes the opening is provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A heat insulating container according to the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of a heat retaining container, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a vertical sectional front view of the heat retaining container. In the figure, reference numeral 1 generally indicates this heat retaining container. This heat-retaining container 1 includes an inner cylinder 2 that stores a low-temperature material such as ice or a high-temperature material such as hot water, an outer cylinder 3 made of synthetic resin that houses the inner cylinder 2, and an inner cylinder 2 or an outer cylinder 3. And a lid body 5 for opening and closing the upper end opening portion 4.
The outer periphery of is covered with a cup 6 which also serves as a cover.

The inner cylinder 2 is formed by deep-drawing stainless steel into a cylindrical shape with a bottom, and an upper end opening 4 is provided with an annular member 8 made of a heat-resistant synthetic resin with a lid mounting screw 7 engraved therein. It is fixed. The outer cylinder 3 is made of synthetic resin in the shape of a bottomed cylinder having a handle 9 formed on one side wall, and the styrofoam is provided between the outer cylinder 3 and the inner cylinder 2 arranged inside the outer cylinder 3. The heat insulation member 10 made of is filled.

The upper end opening 4 of the inner cylinder 2 or the outer cylinder 3
The lid body 5 that opens and closes the inner ring member 8 includes an outer case 12 having an inner peripheral surface provided with a female screw portion 11 that fits into the lid body mounting screw 7 engraved on the annular member 8. A heat insulating member 14 made of expanded polystyrene is provided between the outer case 12 and the inner case 13, and the inner case 13 is inscribed in the peripheral surface.

The cup 6 which also serves as a cup for covering the outer periphery of the lid 5 has a handle 15 integrally formed on one side surface, and the inner peripheral edge of the cup 15 is carved at a portion near the upper end of the outer cylinder 3. An engaging piece (not shown) that fits in the provided engaging recess 16 is formed, and the cup 6 which also serves as a cover is formed by the engagement of this engaging piece and the engaging recess 16 as shown in FIG. Is fixed to the outer cylinder 3.

In the case of using the heat-retaining container 1 configured as described above, a predetermined amount of hot water such as hot tea stored therein is poured into the inner cylinder 2 from the upper end opening 4, and then the upper end opening 4 is opened. The lid 5 closes. The heat of the drinking water such as the hot tea thus sealed is radiated from the inner cylinder 2 to the outside (outer cylinder side) by the heat insulating member 10 so that the heat is not radiated and is made of stainless steel. The heat conducted through the inner cylinder 2 is surrounded by the heat insulating member 10 around the inner cylinder 2, and the upper end opening 4
Since the heat conduction is blocked by the lid 5 that closes the heat insulation, the heat retention efficiency is extremely high, and the heat retention can be maintained high even when carried outdoors.

Next, in the case in which the inner cylinder 2 is supported by the outer cylinder via the heat insulating member 10 made of styrofoam as in this example, when carrying it outdoors or cleaning the inside of the inner cylinder 2. Even when an impact is applied, the heat insulating member 10 made of expanded polystyrene relaxes the impact and prevents the inner cylinder 2 from being deformed or damaged.

Further, as in this example, the upper end opening 4 of the inner cylinder 2
With a wide opening, instead of hot tea, cans such as beer, juice, and sake in a cup can be stored as they are in the inner cylinder 2, and these beverages can be carried while they are kept warm. Of.

[0015]

As described above, the present invention fills the heat insulating member between the outer cylinder made of synthetic resin and the inner cylinder made of stainless steel, and detachably closes the opening of the inner cylinder. Since the heat insulating member is provided inside the synthetic resin lid, the radiant heat radiated from the inner cylinder made of stainless steel and the heat conduction from the opening are kept between the heat insulating member and the synthetic resin between the outer cylinder and the inner cylinder. The heat retaining member inside the lid-making body blocks heat radiation. This has the advantage that the heat retention efficiency of the heat retention container can be significantly improved.

Further, a heat insulating member is filled between the outer cylinder made of synthetic resin and the inner cylinder made of stainless steel, and the heat insulating member is simply provided in the lid of the synthetic resin to be fitted in the opening of the inner cylinder. It has a simple structure and can be produced easily and with less effort compared to the conventional one in which the outer cylinder and the inner cylinder are formed by deep drawing and the openings are welded and integrated. However, there is an advantage that the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a heat retaining container.

FIG. 2 is a vertical sectional side view of a heat retaining container.

FIG. 3 is an exploded perspective view of a heat insulating container.

[Explanation of symbols]

 1 ... Heat-retaining container 2 ... Stainless steel inner cylinder 3 ... Outer cylinder 4 ... Upper end opening 5 ... Lid 10, 14 ... Heat insulating material

Claims (1)

[Claims] 1. A synthetic resin outer cylinder, a stainless steel inner cylinder, a heat insulating member filled between the inner cylinder and the outer cylinder, and a synthetic material for detachably closing an opening of the inner cylinder. A heat-retaining container comprising a resin lid and a heat-retaining member provided in a portion that closes at least the opening of the inner cylinder of the lid.