JP2831216B2 - Insulated container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-temperature or low-temperature insulated container.

[0002]

2. Description of the Related Art Conventionally, this kind of insulated container is shown in FIG.
As shown in the vertical cross-sectional view of FIG.
It comprises a main body 3 and a lid 4 provided in a state of being inserted into the opening 3a of the main body. As a constituent material of such a heat insulating container 1, a space surrounded by inner and outer covers 21 and 22 made of a stainless steel plate or the like is filled with a heat insulating material made of an inorganic fiber such as glass wool or rock wool. A vacuum-evacuated heat insulating layer 23 is used.

[0003]

However, even if the inside of the heat insulating container 1 is well insulated, the fluid inside has the property that the temperature is higher at the upper part and lower at the lower part.
There is a slight temperature difference inside the container 1. This temperature difference cannot be eliminated because convection is actively generated, and the temperature distribution inside the heat insulating container 1 must be uniform by forcibly stirring the internal fluid with a stirring device 2 such as a fan or a blower. There is a problem that it does not.

In the heat insulating container 1, a gap 5 is provided between the main body 3 and the lid 4 in order to facilitate attachment and detachment of the lid 4 to and from the main body 3. Insulation performance is impaired due to large heat flow in and
Not only for the high temperature container,
Temperature, and the temperature near the lid of low-temperature containers
Rises, and in any case, the temperature distribution inside the container becomes uneven
There is a problem that becomes.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a heat insulating container which has good heat insulating performance and does not require uniform temperature distribution inside the container by forced stirring.

[0006]

The present invention in order to solve the above problems SUMMARY OF THE INVENTION are filled with a heat insulating material in the insulated container forming a heat insulating layer in the surrounded inside and outside of the cover space, the adiabatic
Layers should be placed where there is a greater temperature difference inside and outside the vessel.
By filling the insulation with higher thermal conductivity than the part
Heat conductivity according to the temperature distribution inside the container
It was done.

Further, according to the present invention, in the above-mentioned heat-insulating container, there is provided a main body partly having an opening, and a lid part for closing the opening. It is formed by thickening or filling a heat insulating material having a lower thermal conductivity than other portions.

[0008]

SUMMARY OF] According to the heat insulating container as described above, because occur heat out of the through insulation layer of a portion filled with large insulation thermal conductivity easy Kunar, the temperature of the fluid high temperature portion of the vessel in a container of high-temperature applications And the temperature of the fluid low-temperature portion in the container rises in the container for low-temperature use, so that the temperature difference between the high-temperature portion and the low-temperature portion in the container decreases, and the temperature becomes uniform.

Further, by forming the lid and the heat insulating layer in the vicinity thereof to be thicker than other parts or by using a heat insulating material having a small thermal conductivity, heat can be prevented from entering and exiting the lid, and the heat insulating performance can be reduced. As well as the temperature near the lid
Temperature distribution inside the container due to temperature drop or temperature rise
Is eliminated.

[0010]

1 shows a heat insulating container for high temperature according to an embodiment of the present invention. FIG. 1 (a) is a longitudinal sectional view and FIG. 1 (b) is a transverse sectional view. Here, the high temperature means a temperature equal to or higher than a normal temperature.

As described above, the temperature of the fluid is higher in the upper part and lower in the lower part. Therefore, in the case of the heat insulating container 6 used for high temperature applications, as shown in the figure, the ceiling part 9 and the vicinity thereof The heat insulating layer 7 is formed of a heat insulating material having a high thermal conductivity, and the bottom portion 10 and the heat insulating layer 7 in the vicinity thereof are formed of a heat insulating material having a low heat conductivity. Make the rate small. A lid 11 inserted into the opening 8a of the container body 8;
Is formed thickly. This increases the thermal conductivity
Some heat is dissipated from the ceiling 9 and its vicinity
As a result, the temperature in the upper part of the container 6 decreases slightly,
The temperature difference of the body is reduced and the temperature becomes uniform. Also lid
Dissipation of heat from the part 11 is prevented, which also
6 The temperature difference of the fluid inside is reduced, and the temperature becomes uniform.
You. Here, the heat insulating material having a large heat conductivity and the heat insulating material having a small heat conductivity mean the magnitude of the heat conductivity obtained by adjusting the packing density. When reducing the thermal conductivity, reduce the packing density when using a homogeneous material, and when using a heterogeneous material, reduce the fiber diameter for a fiber type, and reduce the powder type for a powder type. I do. When increasing the thermal conductivity, these are reversed .

FIG. 2 shows a heat insulating container 13 for high temperature according to another embodiment of the present invention. As in the case of the high-temperature insulating container 6 shown in FIG. 1, the ceiling portion 14 and the heat insulating layer in the vicinity thereof are formed of a heat insulating material having a high thermal conductivity, and the bottom portion 15 and the heat insulating layer in the vicinity thereof are formed of a low heat conductivity. It is formed of a heat insulating material so that the thermal conductivity gradually decreases from the ceiling 14 toward the bottom 15. Further, the thermal conductivity near the opening 16a of the container body 16 is small, and the heat insulating layer of the lid 17 inserted into the container 16a is formed thick. The back part 18 side is the back part 12 of FIG.
Same as As a result, as in the case of FIG. 1, a certain amount of heat is dissipated from the ceiling portion 14 having a large thermal conductivity and the vicinity thereof, and the temperature of the upper portion inside the container 13 is slightly reduced,
The temperature difference of the fluid inside the container 13 is reduced, and the temperature becomes uniform. Further, as described above, since the thermal conductivity near the opening 16a is further reduced and the lid is formed thick, the dissipation of heat from the lid 17 is further prevented .
Also, the temperature difference of the fluid inside the container 13 is reduced, and the temperature is equalized.
Be one.

FIG. 3 shows a heat insulating container 13 'for high temperature according to still another embodiment of the present invention. In addition to the structure of the heat insulating container 6 for high temperature of FIG.
A heat insulating layer is formed gradually thicker toward 7 '. Back part 1
The 8 'side is the same as the rear part 12 of FIG. As a result, similarly to the case of FIG.
A certain amount of heat is dissipated from 4 'and its vicinity, and the temperature in the upper part of the container 13' is somewhat reduced, and the temperature difference between the fluids in the container 13 'is reduced and the temperature becomes uniform. Further, as described above, the vicinity of the opening 16a 'and the lid 17'
Since the heat insulating layer is thickly formed, the heat dissipation from these portions is further prevented, which also allows the inside of the container 13 '
The temperature difference between the fluids decreases, and the temperature becomes uniform.

When the present invention is applied to a low-temperature insulated container, conversely, the thermal conductivity of the ceiling and its vicinity is reduced, and the thermal conductivity of the bottom and its vicinity is increased.
Here, the low temperature means a temperature equal to or lower than a normal temperature. The thickness of the lid may be the same as that of the high-temperature insulating container. With this configuration, the absorption of heat from the outside at the bottom and in the vicinity thereof increases, and the lower temperature in the lower part of the container is reduced,
The temperature inside the container becomes uniform.

[0015]

As described above, according to the present invention, the heat insulating layer having different thermal conductivity is formed in the high temperature part and the low temperature part of the heat insulating container. In the heat-insulating container for heat radiation and low temperature, the heat absorption in the low-temperature part becomes larger than in other parts, and the fluid temperature in the heat-insulating container becomes uniform. Further, since a stirrer such as a fan or a blower is not required, the apparatus is simplified and energy is saved in terms of power.

According to the present invention, the lid portion of the heat insulating container and the heat insulating layer in the vicinity thereof are formed thicker than other portions.
Or because it formed small heat insulating material having thermal conductivity, it is possible to reduce the out of heat in the lid, is to improve the insulation performance Rutotomoni, it can homogenize the temperature inside the container
You.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vacuum insulated container according to one embodiment of the present invention.

FIG. 2 is a sectional view of a vacuum insulated container according to another embodiment of the present invention.

FIG. 3 is a sectional view of a vacuum insulated container according to still another embodiment of the present invention.

FIG. 4 is a cross-sectional view of a conventional vacuum insulated container.

[Explanation of symbols]

 Reference Signs List 6 heat insulating container 7 heat insulating layer 8 main body 8a opening 11 lid

Continuation of the front page (56) References JP-A-49-72075 (JP, A) JP-A-63-32128 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65D 81 / 38

Claims (2)

(57) [Claims] 1. A heat-insulating container to form a heat insulating layer by filling an insulating material in enclosed in and out of the cover space, the cross-sectional
The thermal layer is located in areas where a large temperature difference occurs inside and outside the container.
To fill the insulation with higher thermal conductivity than the part
The thermal conductivity according to the temperature distribution inside the container.
An insulated container characterized by being formed . 2. A body having an opening in a part thereof, and a lid closing the opening, wherein the lid and a heat insulating layer in the vicinity thereof are formed thicker than other portions, or The heat insulating container according to claim 1, wherein the heat insulating material is formed by filling a heat insulating material having a lower thermal conductivity than the portion.