Refrigeration – Intermediate fluid container transferring heat to heat...
Reexamination Certificate
2001-06-21
2002-08-06
Esquivel, Denise L. (Department: 3744)
Refrigeration
Intermediate fluid container transferring heat to heat...
C062S434000, C062S440000
Reexamination Certificate
active
06427473
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a cold-insulation container that is loaded on a vehicle such as a truck and transported. The present invention relates more particularly to an external-wall structure for such a cold-insulation container.
BACKGROUND ART
A typical type of cold-insulation container which is loaded on a vehicle such as a truck and transported includes a cold-keeping means comprising a refrigerating apparatus and a cold-storage device which is cooled by the refrigerating apparatus and stores cold. The refrigerating apparatus is operated only at the storage warehouse of a delivery terminal. During transportation, the refrigerating apparatus is not operated and the cold-keeping of products to be kept cold which are contained in the cold-insulation container is performed using cold which has been stored in the cold-storage device.
In such a type of cold-insulation container, its cold-insulation container main body and door employ a heat-insulation structure of steel sheet.
PROBLEMS TO BE SOLVED
In order to cut transportation costs, it is necessary to reduce the weight of a cold-insulation container of the above type. However, as stated above, such a cold-insulation container employs a heat-insulation structure of steel sheets which is heavy. This gives rise to the inconvenience that the weight of a cold-insulation container becomes approximately the same as that of products to be cooled which are stored in the cold-insulation container. For example, the weight of a cold-insulation container with a load capacity of 300 kg is 300 kg.
Bearing in mind the above-described problem, the present invention was made. Accordingly, an object of the present invention is to improve transportation efficiency by forming an external wall of a cold-insulation container main body and a door with a synthetic resin for weight reduction.
DISCLOSURE OF THE INVENTION
A first invention is disclosed which comprises a cold-insulation container main body
1
which is a heat-insulation structure, a door
2
for opening and closing an opening portion
4
of the cold-insulation container main body
1
, and a cold-keeping means
3
which is disposed in the cold-insulation container main body
1
. And, the cold-keeping means
3
includes a refrigerating apparatus
19
which is positioned in the cold-insulation container main body
1
and a cold-storage device
20
which is cooled by the refrigerating apparatus
19
and stores cold. In addition, an external wall of the cold-insulation container main body
1
and the door
2
are formed from a synthetic resin material.
In the first invention, the cold-insulation container main body
1
and the door
2
are reduced considerably in their weight, thereby resulting in the increase in loadable weight. Accordingly, there is achieved a considerable improvement in transportation efficiency.
A second invention according to the first invention is disclosed in which outwardly projecting portions
25
and
26
for reinforcement are formed on the external wall of the cold-insulation container main body
1
and on the door
2
, respectively.
In the second invention, the section modulus of the cold-insulation container main body
1
and the door
2
increases, whereby the external wall structural strength of the cold-insulation container is improved. Further, at the time of handling a cold-insulation container, even when it collides with another cold-insulation container, such collision contact will occur between the reinforcement projecting portions
25
and
26
of one of the cold-insulation containers and the reinforcement projecting portions
25
and
26
of the other cold-insulation container. Consequently, the structural strength against collision load is enhanced.
A third invention is disclosed which comprises a cold-insulation container main body
1
which is a heat-insulation structure, a door
2
for opening and closing an opening portion
4
of the cold-insulation container main body
1
, and a cold-keeping means
3
which is disposed in the cold-insulation container main body
1
. And, an external wall of the cold-insulation container main body
1
and the door
2
are formed from a synthetic resin material. In addition, outwardly projecting portions
25
and
26
for reinforcement are formed on the external wall of the cold-insulation container main body
1
and on the door
2
, respectively.
In the third invention, the cold-insulation container main body
1
and the door
2
are reduced considerably in their weight, thereby resulting in the increase in loadable weight. Accordingly, there is achieved a considerable improvement in transportation efficiency. Further, at the time of handling a cold-insulation container, even when it collides with another cold-insulation container, such collision contact will occur between the reinforcement projecting portions
25
and
26
of one of the cold-insulation containers and the reinforcement projecting portions
25
and
26
of the other cold-insulation container. Consequently, the structural strength against collision load is enhanced.
A fourth invention according to the second or third invention is disclosed in which the external wall of the cold-insulation container main body
1
and the door
2
are constructed by filling a heat-insulation material
13
between a synthetic-resin internal plate
11
and a synthetic-resin external plate
12
, and by filling a heat-insulation material
16
between a synthetic-resin internal plate
14
and a synthetic-resin external plate
15
. Further, the reinforcement projecting portions
25
and
26
are formed by causing the external plates
12
and
15
to project outwardly.
In the fourth invention, the reinforcement projecting portions
12
and
15
are formed by only causing the external plates
12
and
15
to project outwardly. Furthermore, the thickness of the heat-insulation materials
13
and
16
in the reinforcement projecting portions
25
and
26
increases, thereby providing an improvement in heat-insulation efficiency.
A seventh invention according to the second or third invention is disclosed in which the external wall of the cold-insulation container main body
1
and the door
2
are constructed by filling a heat-insulation material
13
between a synthetic-resin internal plate
11
and a synthetic-resin external plate
12
, and by filling a heat-insulation material
16
between a synthetic-resin internal plate
14
and a synthetic-resin external plate
15
. Further, the reinforcement projecting portions
25
and
26
are formed outwardly from and integrally with the external plates
12
and
15
, having therein space portions
27
and
28
.
In the seventh invention, it is sufficient that the reinforcement projecting portions
25
and
26
are formed outwardly from and integrally with the external plates
12
and
15
. Further, by virtue of the provision of the space portions
27
and
28
formed in the reinforcement projection portions
25
and
26
, the heat-insulation efficiency at these portions is improved.
A tenth invention according to the second or third invention is disclosed in which the external wall of the cold-insulation container main body
1
and the door
2
are constructed by filling a heat-insulation material
13
between a synthetic-resin internal plate
11
and a synthetic-resin external plate
12
, and by filling a heat-insulation material
16
between a synthetic-resin internal plate
14
and a synthetic-resin external plate
15
. Further, the reinforcement projecting portions
25
and
26
are formed by increasing the thickness of the external plates
12
and
15
.
In the tenth invention, it is possible to form the reinforcement projecting portions
25
and
26
by only increasing the thickness of the external plates
12
and
15
.
Further, such increase in the thickness of the external plates
12
and
15
provides an improvement in the strength of the reinforcement projecting portions
25
and
26
.
A fifth, an eighth, and an eleventh invention according to the fourth, the seventh, and the tenth invention, respectivel
Fujimoto Yuji
Ikemiya Makoto
Kurokawa Sadanao
Ueno Akitoshi
Daikin Industries Ltd.
Esquivel Denise L.
Jones Melvin
Nixon & Peabody LLP
Studebaker Donald R.
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