JPH109762A - Insulated box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure which is easy to seal and excellent in insulating performance in the case when a third storage compartment is formed on a site which is close to an intermediate partition area which partitions and forms a first storage compartment and a second storage compartment. SOLUTION: An upper partition area 24, which partitions and forms a cold storage compartment 22 and a freezer compartment 23, is formed in an inner box 21 while a housing area 28 having an opening 30 on the front, is formed at a site on the side of the freezer compartment 23 which is close to this upper partition area 24. A storage compartment formation box 31, which uses its internal area as a select compartment 32, is laid out and inserted into the recesses area 28 from the opening 30. A stock solution of expanded urethane is injected and expanded in a space between an outer box 40 and the inner box 21, thereby filling up a foam insulating material in the partition space 33 and the other space 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating box having a structure in which a third storage room is formed adjacent to an intermediate partition for forming a first storage room and a second storage room.

[0002]

SUMMARY OF THE INVENTION Insulated boxes for refrigerators
Generally, an outer shell is formed by an outer box made of a steel plate and an inner box made of plastic, and a space formed in the outer shell is filled with a foam insulating material made of urethane foam by a so-called in-situ foaming method. It is configured.

FIG. 8 shows an example of an inner box portion of such a heat insulating box. The inner box 1 is formed by vacuum forming via the upper partition 2a and the lower partition 2b, for example, so as to form the refrigerator compartment 3, the freezer compartment 4, and the vegetable compartment 5 from above. In such a configuration, for example, a relatively small room, for example, a switching room 6 in which a set temperature can be switched, is provided on the freezing room 4 side of the upper partition 2a.
Is conventionally formed as follows. That is, the bottom partition wall 7 is located below the upper partition 2a.
And a left partition wall 8, and these bottom partition walls 7 are provided.
A portion surrounded by the left partition wall 8, the upper partition portion 2 a, and the inner surface of the inner box 1 is configured as a switching chamber 6.

In this case, as shown in FIG. 9, the bottom partition wall 7 and the left partition wall 8 are formed by inserting a molded heat insulating material 10 made of preformed styrene foam into a preformed outer shell member 9. (FIG. 9 shows the structure of the bottom partition wall 7). In addition, in front of the upper partition part 2a and the lower partition part 2b, a preformed partition cover 11 is provided.
Is installed. In FIG. 9, the space between the inner box 1 and the outer box 12 and the space in the upper partition 2a and the lower partition 2b are filled with foam insulation 13 made of urethane foam by an in-situ foaming method. .

When the heat insulating box having such a structure is manufactured, not only the upper partition 2a and the lower partition 2b but also the bottom partition 7 and the left partition 8 of the switching chamber 6 are formed in the inner box 1. It is preferable that the portions are also integrally formed by vacuum forming, and the insides of the bottom partition wall 7 and the left partition wall 8 are also filled with a foam insulating material 13 made of urethane foam.

However, when the partition portion forming the switching chamber 6 is to be integrally formed by vacuum forming, the elongation of the portion is greatly different from that of the other portions. It may be thin or break, which is practically impossible.

For this reason, conventionally, as described above, the bottom partition wall 7 and the left partition wall 8 of the switching chamber 6 are formed separately from the inner box 1 in a preformed outer shell member 9. The molded heat insulating material 10 made of expanded styrene foam is inserted and configured, and these are arranged in the inner box 1.

However, in the above-described configuration,
There is a disadvantage that the sealing structure between the bottom partition wall 7 and the left partition wall 8 and the inner surface of the inner box 1 and the upper partition section 2a and between the bottom partition wall 7 and the left partition wall 8 becomes complicated. .
Further, in the bottom partition wall 7 and the left partition wall 8, the adhesion between the outer shell member 9 and the molded heat insulating material 10 is poor, and the upper partition portion 2a and the lower partition portion in which the foamed heat insulating material 13 is filled by in-situ foaming. Insulation performance is inferior to 2b part. For this reason, in order to secure the heat insulation performance, it is necessary to use those bottom partition walls 7.
In addition, it is necessary to increase the thickness of the left partition wall 8, but when the thickness is increased, there is a problem that the internal volume of the refrigerator becomes small.

The present invention has been made in view of the above circumstances, and has as its object to form a third storage room at a portion adjacent to an intermediate partition for forming the first and second storage rooms. Another object of the present invention is to provide a heat-insulating box having an easy sealing structure and excellent heat-insulating performance.

[0010]

In order to achieve the above object, the heat insulating box of the present invention has an outer box and a first and a second storage chamber disposed in the outer box. An inner box having a storage section having an opening formed in the front at a portion adjacent to the intermediate partition, and an opening formed in a box shape with the front opened, and a storage section from the opening. A storage space forming box having a third storage room formed therein, and a partition space formed between an outer surface of the storage space and the storage portion; And a foam insulating material filled by an in-situ foaming method in another space formed by the inner box and the storage room forming box.

According to the above-mentioned means, the third storage room separate from the first and second storage rooms formed in the inner box is formed by the storage room forming box, and the periphery of the storage room forming box is formed. Since the partition wall is composed of a storage room forming box, a storage section of the inner box, and a foam insulating material filled in the in-situ foaming method in the partition space between them,
Compared to the case where the partition wall is formed using a preformed heat insulating material, the sealing structure is easier and the heat insulating performance is excellent.

In this case, the inner box may be formed by integrally forming a closed portion on the front surface of the storage portion by vacuum forming of plastic, and an opening portion for inserting a storage room forming box may be formed in the closed portion. preferable. Further, a partition member for partitioning between the storage room forming box and another storage room adjacent thereto can be integrally formed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to a refrigerator will be described below with reference to FIGS. First, in FIG. 2, the inner box 21 is formed by vacuum molding of plastic, and has the following configuration. That is, the inner box 21 has a space between the uppermost refrigerator compartment 22 (corresponding to the first storage compartment of the present invention) and the middle freezer compartment 23 (corresponding to the second storage compartment of the present invention). An upper partition part 24 (corresponding to an intermediate partition part of the present invention) for partitioning and a lower partition part 26 for partitioning between the freezing compartment 23 and the lowest vegetable compartment 25 are integrally formed. Also, upper partition 2
In the right part on the freezer compartment 23 side adjacent to No. 4, a closed part 2
The storage part 28 in which 7 is formed is integrally formed. The freezer compartment 23 is formed in an L-shape as a whole because the storage portion 28 projects downward at the right portion.

In the inner box 21, the refrigerator compartment 22, the freezer compartment 2
3, and the vegetable compartment 25 are each closed at the rear surface, but the rear surface and the right side surface of the storage unit 28 are open. The front part of the upper partition part 24 and the lower partition part 26, and the closing part 2
7 is set so as to be slightly behind the front peripheral portion 21 a of the inner box 21.

Here, when the inner box 21 having such a configuration is formed by vacuum forming, the closing portion 27 corresponds to the rear opening portion of the inner box 21, and the left side surface 28 a of the storage portion 28 corresponds to the right side of the inner box 21. Since the bottom surface 28c of the storage unit 28 corresponds to the bottom surface opening of the upper partition 24,
While the storage portion 28 is formed, the elongation percentage of the storage portion 28 does not become extremely larger than other portions. Therefore, the inner box 21 can be formed by vacuum forming as in the case of forming the refrigerator compartment, freezer compartment, and vegetable compartment as in the related art.

In the case of manufacturing a heat insulating box using the inner box 21 having such a structure, first, the closed portion 27 is cut along a cutting line 29 shown by a two-dot chain line in FIG. By doing so, a rectangular opening 30 (see FIG. 1) is formed. Then, a storage room forming box 31 made of plastic, which is formed in advance by, for example, injection molding, is inserted through the opening 30 and placed in the storage section 28. The storage room forming box 31 has a box shape with an open front surface and a closed rear surface. The flange portion 31 a formed at the peripheral edge of the front opening is applied to the peripheral edge of the opening 30. The inside of the storage room forming box 31 is, for example, a select room 32 (corresponding to a third storage room of the present invention) in which a set temperature can be switched. In a state where the storage room forming box 31 is disposed in the storage unit 28, the partition space 3 is provided between the outer surface of the storage room formation box 31 and the storage unit 28.
3 (see FIG. 1).

A plastic upper partition cover 34 is attached to the front of the upper partition 24 including the front upper edge of the storage room forming box 31, and the front lower edge of the storage room forming box 31 is provided. , A plastic intermediate partition cover 35 is attached.
The lower partition cover 36 made of plastic is attached. The intermediate part partition cover 35 is integrally formed with an extension 35a extending leftward from the storage room forming box 31.
With this extension 35a, the L-shaped freezer compartment 23 is apparently partitioned into two compartments. The room on the left side of the storage room forming box 31 (select room 32) is the ice making room 3
7 (see FIG. 3), the ice making chamber 37 and the lower freezing chamber 23 are in communication. In addition, ice making room 3
7, an automatic ice maker (not shown) is provided.

At the front of each of the upper, middle and lower partition covers 34, 35, 36, a dew-proof pipe (not shown) is provided.
A groove 38 for arranging the parts is formed. The groove portion 38 is finally closed by a steel plate closing plate (not shown).
Is closed by. In addition, a plastic vertical partition cover 39 is attached to the left front edge of the storage room forming box 31.

As described above, the inner box 2 having the storage room forming box 31 and the partition covers 34, 35, 36, 39 mounted thereon.
1 is disposed in an outer box 40 made of a steel plate as shown in FIG. Thereby, a space 41 (corresponding to another space of the present invention) is formed between the outer box 40, the inner box 21, and the storage room forming box 31. In such a state, a stock solution of urethane foam is injected into the space 41,
This is foamed by in-situ foaming, so that the space 4
A foam insulating material 42 is filled in the partition space 1 around the storage chamber forming box 1 and the storage room forming box 31. This allows
The refrigerator insulation box 43 is manufactured. Insulation box 4
3 is provided with a cooler and a cool air passage for supplying cool air to each room, but these are omitted in FIG.

According to the first embodiment described above, the select room 32 different from the refrigerator room 22, freezer room 23 and vegetable room 24 formed in the inner box 21 is formed by the storage room forming box 31. The partition wall around the storage room forming box 31 includes the storage room forming box 31 and the storage portion 2 of the inner box 21.
8 and a partition space 33 and a space 41 between them
And the foam heat insulating material 42 filled in place by the foaming method in-situ, so that the sealing structure is easier and the heat insulating performance is improved as compared with the case where the partition wall is formed by using a preformed heat insulating material. It will be excellent, and the cost can be reduced accordingly. In addition, since it is not necessary to particularly increase the thickness of the partition wall around the storage room forming box 31, it is possible to prevent the internal volume from being reduced. Moreover, according to the present embodiment, the inner box 21 can be formed by vacuum forming as in the conventional case.

FIG. 4 shows a second embodiment of the present invention. The second embodiment differs from the first embodiment in the following points. That is, a storage chamber forming box 44 having the inside as the select chamber 32 and an upper partition cover 45.
(A partition member according to the third aspect of the invention) and an intermediate partition bar 46 (also a partition member according to the third aspect of the invention) are integrally formed by injection molding. Intermediate partition bar 4
6 is integrally formed with an extension 46a.

According to the second embodiment, in addition to the operation and effect obtained in the first embodiment, there is an advantage that the number of parts can be reduced.

FIG. 5 shows a third embodiment of the present invention. The third embodiment differs from the first embodiment in the following points. That is, the storage room forming box 3
Two guide rails 47 protruding inward are integrally formed on both left and right sides of 1. This guide rail 47
It is for guiding a slide of a drawer container (not shown) which is housed in the select chamber 32 so as to be able to freely enter and exit.

FIG. 6 shows a fourth embodiment of the present invention. The fourth embodiment differs from the first embodiment in the following points. That is, the storage room forming box 3
A cold air outlet 48 is integrally formed at the rear of the device 1.
In this case, although not shown, a cool air flow path and a damper device are provided behind the cool air outlet 48 so that the supply amount of cool air to the select chamber 32 can be adjusted by the damper device. .

The present invention is not limited to the above embodiments, but can be modified or expanded as follows. The storage section 28 for storing the storage chamber forming boxes 31 and 44 is provided on the freezer compartment 23 side (lower side) of the upper partition section 24.
In place of the above, it may be provided on the refrigerating room 22 side (upper side). Further, the storage room inside the storage room forming boxes 31 and 44 may be, for example, a chilled room instead of the select room 32.

[0026]

According to the first aspect of the present invention, the first and the second are provided.
When the third storage room is formed at a portion adjacent to the intermediate partition portion that forms the storage room, the seal structure is easier than when the partition wall is formed using a preformed heat insulating material. In addition, a structure having excellent heat insulation performance can be obtained.

According to the second aspect of the present invention, the inner box can be formed by vacuum forming. According to the third aspect of the invention, the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of an inner box, a storage room forming box, and the like.

FIG. 3 is a front view of the heat insulating box.

FIG. 4 is a view corresponding to FIG. 2, showing a second embodiment of the present invention;

FIG. 5 is a perspective view of a storage room forming box according to a third embodiment of the present invention.

FIG. 6 is a front view of a storage room forming box according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 shows a conventional configuration, and is an exploded perspective view of an inner box, a partition, and the like.

FIG. 9 is a diagram corresponding to FIG. 1;

[Explanation of symbols]

21 is an inner box, 22 is a refrigerator compartment (first storage compartment), 23 is a freezer compartment (second storage compartment), 24 is an upper partition (intermediate partition), 27 is a closed portion, 28 is a storage portion, 30 is an opening, 3
1 is a storage room forming box, 32 is a select room (third storage room), 33 is a partition space, 40 is an outer box, 41 is a space (other space), 42 is a foam insulation material, 43 Is a heat insulating box, 44 is a storage room forming box, 45 is an upper partition cover (partition member), and 46 is a lower partition cover (partition member).

Claims (3)

[Claims] 1. An outer box and an intermediate partition disposed in the outer box to partition and form the first and second storage chambers, and an opening at the front surface at a portion adjacent to the intermediate partition. And an inner box having a storage part formed with a box, and a box-shaped front face opened and inserted into the storage part from the opening part to form a partition space between the outer surface thereof and the storage part. In-situ foaming in a storage room forming box having an inside as a third storage room, in the partition space, and in another space formed by the outer box, the inner box, and the storage room forming box A heat insulating box comprising: a foam insulating material filled by a method. 2. The inner box is formed by vacuum forming of plastic so as to integrally have a closed portion on the front surface of the storage portion.
2. The heat insulating box according to claim 1, wherein an opening for inserting the storage room forming box is formed in the closed portion. 3. The heat insulating box according to claim 1, wherein a partition member for partitioning the storage room forming box from another storage room adjacent thereto is formed integrally with the storage room forming box.