JPS608053Y2 - Low temperature fireproof storage - Google Patents

Description

[Detailed description of the invention] The present invention relates to a low-temperature fireproof storage for storing items that are sensitive to heat or moisture, such as magnetic tape, microfilm, jewelry, etc. In particular, the low-temperature fireproof storage has improved heat insulation and moisture-proofing properties with its inner door. It is related to storage.

FIG. 1 is a cross-sectional view of the fireproof warehouse of the present invention, and particularly shows the cross-sectional structure of the inner door in detail.

In the figure, 1 indicates the main body of the fireproof warehouse, and 2 indicates the outer door of the fireproof warehouse.
Since these are not the main points of the present invention, it is merely a summary thereof.

A feature of the low temperature fireproof warehouse of the present invention is its inner door, which is separated from the outer layer made of a steel plate outer shell 11 filled with a heat insulating material 12 and the inner layer of a non-metallic moisture-proof heat shield plate 13.

By having the above-mentioned layered structure, the steel plate outer shell 11 does not extend into the inside of the refrigerator, and therefore, it is possible to prevent heat from entering due to heat conduction of the steel plate.

As the heat insulating material 12 in the outer layer, an inorganic fiber heat insulating material such as glass wool, urethane foam or other plastic foam may be used, and the steel plate outer shell 11 may cover the entire heat insulating material 12. It is also possible to have a configuration like this.

As the non-metallic moisture-proof heat shield plate 13 of the inner layer, a plastic plate such as a vinyl chloride plate is mainly used, but it is also possible to use a wooden plate or slate plate whose moisture permeability is reduced by resin processing such as melamine resin veneer. It is.

In the fireproof storage of the present invention, the inner door is attached to the inside of the outer door 2 by a hinge 15.

In addition, the inner surface of the main body 1 is formed with a surface that contacts the inner layer peripheral part of the inner door and receives the inner door, and a gasket rubber 1 is formed on this part.
4 are provided.

The non-metallic moisture-proof and heat-shielding plate 13 of the inner door is pressed against the gasket rubber 14, so that the interior of the refrigerator is closely sealed.

According to the low-temperature fireproof warehouse of the present invention having the above-mentioned structure, even if placed under severe high-temperature conditions due to a fire, the space 3 between the outer door 2 and the inner door can be maintained at a certain low temperature by the outer door 2. Furthermore, the inner door maintains the temperature of the interior space within a predetermined range and prevents moisture from entering.

As detailed above, the low-temperature fireproof storage of the present invention has two outer doors.
By making the inner door double, the heat insulation effect is doubled, and by adopting the above-mentioned two-layer structure for the inner door, the heat insulation effect is increased. Furthermore, by making the door double, the heat insulation effect is doubled. A gasket rubber 14 can be used between the refrigerator and the main body 1, and a non-metal moisture-proof heat shield plate 13 is used on the inner layer of the inner door to provide a moisture-proof effect inside the refrigerator.

In the event of a fire, fireproof cabinets are often flooded with water during fire extinguishing efforts, so when storing items that are sensitive to moisture, moisture-proofing is required in addition to insulation. The proposed low-temperature fireproof warehouse can fully meet these demands.

Note that if a plastic plate is used as the non-metallic moisture-proof heat shield plate 13, it has the advantage that it has a low thermal conductivity and does not allow moisture to pass through, and that there is no need to paint the surface.

The following is an example of the low temperature fireproof warehouse of the present invention.

Example A steel plate outer shell 11 made of a steel plate with a thickness of 1 mm is filled with glass wool as a heat insulating material 12 to form the inner door outer layer (the thickness of the heat insulating material layer 12 is 251 Mt). A low-temperature fireproof warehouse was manufactured using a 10 mm thick vinyl chloride board bonded as an inner layer as an inner door.

The above fireproof storage was subjected to a 2-hour fireproof test according to the JIS fireproof storage test method, and the results are shown in a graph in FIG.

In the figure, the horizontal axis indicates elapsed time, and the vertical axis indicates temperature.

Further, the solid line graph is a temperature increase curve on the back surface of the inner door (inner layer surface on the inside of the refrigerator), and the broken line graph is a temperature increase curve on the inner door surface (surface of the outer steel plate shell).

The heat insulation effect of the inner door is clear from the figure, but the temperature inside the refrigerator hardly rose at this time, and the moisture-proofing effect was also observed.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the low-temperature fireproof warehouse of the present invention, and FIG. 2 is a graph showing the results of a fire resistance test of the low-temperature fireproof warehouse of the present invention. 1...Main body, 2...Outer door, 3...
... Space between the outer door and the inner door, 11... Outer shell made of steel plate,
12...Insulating material, 13...Non-metal moisture-proof heat shield plate, 14...Gasket rubber, 15...
...Hinge.

Claims (1)

[Scope of Claim for Utility Model Registration] A low-temperature fireproof warehouse consisting of a main body 1, an outer door 2, and an inner door, the inner door comprising an outer layer made of a steel plate outer shell 11 filled with a heat insulating material 12; A gasket rubber 14 is provided between the main body 1 and the non-metal moisture-proof heat shield plate 13, and when the inner door is closed, the non-metal moisture-proof heat shield plate The hot plate 13 is connected to the main body 1 via the gasket rubber 14.
A low-temperature fireproof warehouse characterized by being in close contact with the