JPS6342866Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heating and heat-insulating container whose heat source is a heating element that contains a heat-generating composition that generates heat in the presence of air.

In order to prevent the temperature of heated food and drinks from dropping, it has been widely used to store them in thermos containers such as thermos bottles. It is essentially difficult to prevent a drop in the temperature of the object to be kept warm, and increasing the heat retention of a heat-insulating container to a level that is practically satisfactory would result in a considerable increase in volume and weight, and it would become relatively expensive. It had the disadvantage of being stored away.

For this reason, there was a desire for a heat-insulating container with a heat source that could actively heat the contents, but it was highly praised for being relatively inexpensive, lightweight, highly safe, and portable. For the past one to two years, there has been a movement to market heating and heat-insulating containers whose heat source is a heating element made of a heat-generating composition that generates heat in the presence of air.

However, in heating thermal containers whose heat source is a heating element made of a heat generating composition that generates heat in the presence of air, some or all of the ventilation holes of the heating thermal insulation containers may be blocked on the inner or outer surface during stacked storage or portable transportation. This has the disadvantage that the air permeability of the heating and heat-insulating container is greatly reduced, and the heating element no longer generates enough heat to keep the object warm.

An object of the present invention is to provide a heating and heat-insulating container that does not have the risk of its ventilation holes being blocked and causing a significant decrease in air permeability during normal use.

As a result of extensive research, the inventors of the present invention have found that the above object can be achieved by providing protrusions on the inner and/or outer surface of the surface of the heating and heat-insulating container that has ventilation holes.

That is, the present invention provides a heating and heat-insulating container whose heat source is a heating element that contains a heat-generating composition that generates heat in the presence of air. A heating and heat-insulating container, characterized in that a ventilation hole for supplying external air is provided, and a plurality of protrusions of equal height are provided on the inner and/or outer surface of the surface. be.

The shape of the heating and heat-insulating container of the present invention is a rectangular parallelepiped in consideration of the storage efficiency of the container.

In the heating and heat-insulating container of the present invention, the object to be kept warm and the heating element may be housed in the same chamber, or they may be housed in different chambers. In the latter case, a partition plate may be provided within the container to separate the heating element from the object to be kept warm.

The protrusions provided in the heating and heat-insulating container of the present invention are located on the inner and/or outer surface of the surface having ventilation holes, and the number of protrusions is plural on each surface, and the heights of the protrusions are all the same. It is said that

The area of the ventilation hole punched in the heat-insulating container of the present invention varies depending on the performance of the heating element serving as the heat source, as well as the heat retention, breathability, and strength required of the heat-insulating container, and cannot be absolutely limited. As a heat insulating container whose heat source is a heating element that generates heat in the presence of air, it is undesirable to have too little ventilation or low heat generation performance, and the ventilation holes are too large or have too many holes. It is also undesirable that the strength of the heat insulating container decreases and it becomes easily damaged during use, so the area of the ventilation holes to be punched is naturally limited. The area of the vent holes to be bored is usually 1% to 20%, preferably 2% to 10%, of the inner surface area of the heat-insulating container.

There is no particular restriction on the position of the ventilation hole formed in the heating and heat-insulating container of the present invention as long as it is located at a position where air can be supplied to the heating element when air flows into the container through the ventilation hole.

Closed-cell resin foam is used as the material for the lid and main body of the heating and heat-insulating container of the present invention because of its ease of processing, high heat insulation properties, stiffness, and low cost.

Examples of closed cell resin foams include closed cell resin foams such as polyvinyl chloride, polyethylene, polypropylene, polystyrene and polyurethane.

The material of the partition plate used in this invention is preferably one with higher heat conductivity, such as a metal plate, a synthetic resin plate, and a silicon plate. This does not apply if the same material or similar material is used.

There are no particular restrictions on the exothermic composition as long as it generates heat in the presence of air.

The heat-generating composition is filled into a container having a certain shape, such as a bag or a box, to form a heat-generating element, and then put into practical use. The container filled with the exothermic composition must have ventilation so that air can be supplied to the extent that the exothermic composition can generate sufficient heat.

The present invention will be explained in more detail with reference to the drawings. Note that the present invention is not limited to the embodiments shown in the drawings.

In FIGS. 1 and 2, the shape of the heating and heat-insulating container is a rectangular parallelepiped, with a heating element 6 as a heat source and a heat-insulating object 7.
2 is a longitudinal sectional view of a heating and heat-insulating container which is housed in the same room, has a ventilation hole provided on the upper surface of the lid 1 of the container, and has protrusions 4, 4 similarly provided on the upper surface outside the lid 1. FIG. FIGS. 2 and 3 show the heating and heat-insulating containers of FIG. 1 in a stacked state. Tazushi, 3rd
The illustrated heating and heat-insulating container is provided with holes 5, 5 on the outer surface of its bottom, which are fitted with protrusions 4, 4 provided on the top surface of the lid.

In Figure 4, the shape of the heating and insulation container is a rectangular parallelepiped.
The room is divided into two rooms by a partition plate 8, with the heating element 6 being housed in the lower chamber and the heat-retaining object 7 being housed in the upper chamber. FIG. 3 is a longitudinal sectional view of a heating and heat-insulating container in which vent holes 3, .

In the heating and heat-insulating container of the present invention, there is almost no possibility that the ventilation holes on the outer or inner surface of the container are blocked, resulting in a significant decrease in air permeability. Therefore, the heating and heat-insulating containers of the present invention can be stacked and used, and a large number of heat-insulating containers can be used in a small space.

In addition, by providing protrusions on the inner surface of the heating and insulation container of the present invention that has air vents, there is no risk of the heating element, the object to be kept warm, etc. shifting from their original positions during transport and blocking the air vents, making the container ideal for portability.

By providing the heating and heat-insulating container of the present invention with projections on the outer surface of the container, it is possible to reduce the loss of heat from the surface of the container and improve the heat-retaining property of the container.

By providing projections or protrusions on the upper and lower surfaces of the heating and heat-insulating containers of the present invention, it becomes possible to stack them in a stable state.

The heating and heat-insulating container of the present invention has various advantages as described above, and is relatively inexpensive, convenient, highly safe, portable, and has excellent heat-retaining ability.

[Brief explanation of the drawing]

The drawings illustrate the heating and heat-insulating container of the present invention. FIG. 1 is a longitudinal cross-sectional view of a heating and heat-insulating container provided with projections on the outside, and FIG. 2 is a diagram showing one mode of use of the heat-insulating container shown in FIG. 1. Figure 3 is the first
This figure shows how the heating and heat-insulating container is used, which is a modified version of the heating and heat-insulating container shown in the figure. FIG. 4 is a longitudinal cross-sectional view of a heating and heat-insulating container having projections on its inner and outer surfaces and partitioned into two chambers. In the drawings, 1...lid, 2...main body, 3...
Ventilation hole, 4... protrusion, 5... hole, 6... heating element,
7... Heat retention object, 8... Partition plate.

Claims (1)

[Scope of utility model registration request] In a heating and heat-insulating container whose heat source is a heating element that houses a heat-generating composition that generates heat in the presence of air,
A rectangular parallelepiped container having a main body and a lid made of closed cell resin foam is provided with ventilation holes for supplying external air to the surface of the container, and a plurality of ventilation holes are provided on the inner and/or outer surface of the surface, and the height of the container is What is claimed is: 1. A heating and heat-insulating container characterized by being provided with protrusions having the same number of protrusions.