JPH0882475A - Heat insulating box body - Google Patents

Abstract

PURPOSE: To support sufficiently rigidly a partition body which is so called a middle partition wall or a shell plate provided in an inner section of an inner box, in a box using a vacuum heat insulating panel as a heat insulating material between an outer box, and an inner box. CONSTITUTION: Between a bead section 8 supporting a shell plate (partition body) 7 of an inner box 4 and a vacuum heat insulating panel 6, a heat insulating space 10 is formed, in this heat insulating space 10, a foam generating and heat insulating material 12 impregnated and foamed at a state of an original liquid, is filled, and by curing that, a rigidity at a root section of the bead section 8 of the inner box 4 is increased, and, a degree of a connecting adhesion with a vacuum heat insulating panel 6 is also increased and with respect to supporting the shell plate 7, a sufficient supporting strength is made obtainable.

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 using a vacuum heat insulating panel.

[0002]

2. Description of the Related Art In a heat insulating box of this type, for example, a cabinet of a refrigerator, it has been considered in recent years to use a vacuum heat insulating panel excellent in heat insulating performance as a heat insulating material. In this product, a vacuum heat insulation panel is installed in the main part inside the outer shell consisting of an outer box and an inner box, and foam insulation is injected into the remaining space in the state of undiluted solution to foam. The structure of filling is adopted.

[0003]

A partition body such as a shelf plate or an intermediate partition wall is generally provided inside the heat-insulating box body such as the cabinet of the refrigerator, which is a bead formed in the inner box. Supported by the department. However, in the heat insulation box body using the above-mentioned vacuum heat insulation panel, this bead portion is a support whose root portion is only in contact with the vacuum heat insulation panel or is simply fixed to the vacuum heat insulation panel. Therefore, the supporting strength is not sufficient, and thus there is a risk that the partition body lacks in firmness to support it.

The present invention has been made in view of the above circumstances, and therefore an object thereof is to provide a heat insulating box body capable of supporting a partition body sufficiently firmly in a vacuum heat insulating panel. is there.

[0005]

In order to achieve the above object, in the heat insulating box body of the present invention, a vacuum heat insulating panel is arranged inside an outer shell body composed of an outer box and an inner box. In addition, it is constructed by injecting foamed heat insulating material in the state of undiluted solution and foaming it to fill the space other than the vacuum heat insulating panel, and having a partition inside, it supports the partition of the inner box. It is characterized in that a heat insulating material space is formed between the portion to be vacuum-insulated and the vacuum heat insulating panel, and the heat insulating material space is filled with the foamed heat insulating material.

In this case, the heat insulating material space may be formed by convexly bulging the base portion of the portion supporting the partition body of the inner box, and a vacuum facing the portion supporting the partition body of the inner box. It may be formed by denting the part of the heat insulation panel in a concave shape. The partition body may be a shelf plate or an intermediate partition wall. Further, the inner box has a plurality of portions for supporting the partition body, and the uneven strip portion is formed between the respective portions,
It is more preferable to fill a foamed heat insulating material between the uneven strip portion and the vacuum heat insulating panel.

[0007]

According to the above-mentioned means, the foamed heat insulating material filled in the heat insulating material space between the root portion of the portion supporting the partition body of the inner box and the vacuum heat insulating panel is cured, so that the partition body of the inner box is removed. The rigidity of the root portion of the supporting portion is increased, and the degree of bonding with the vacuum heat insulating panel is also increased, so that sufficient supporting strength can be obtained.

In this case, if the heat insulating material space is formed by bulging the root portion of the portion supporting the partition of the inner box in a convex shape, the heat insulating material space can be easily formed. Further, even if the heat insulating material space is formed by recessing the portion of the vacuum heat insulating panel facing the portion supporting the partition body of the inner box into a concave shape, the heat insulating material space can be easily formed.

Further, in particular, the inner box has a plurality of portions for supporting the partition body, and the uneven strip portions are formed between the respective portions, and the foam insulating material is filled between the uneven strip portions and the vacuum heat insulating panel. In such a case, the rigidity of the whole of the plurality of supporting portions can be increased by the foamed heat insulating material, and thus more sufficient supporting strength can be obtained.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention applied to a refrigerator cabinet will be described below with reference to FIGS. First, FIG. 2 shows the entire structure of a refrigerator cabinet. An outer box 2 made of, for example, a metal plate having a back plate 1 as a separate body and an intermediate partition wall 3 for partitioning the inside into, for example, a refrigerating room and a freezing room are integrated. The outer shell body 5 is configured with the plastic inner box 4 of FIG.

In the outer box 2 of the outer shell 5, individual vacuum heat insulation panels 6 are fixed to the inner surfaces of the upper surface and the left and right side surfaces using an adhesive agent. This vacuum insulation panel 6
Although not shown in detail, for example, a filler made of fine powder having a heat insulating property such as pearlite or silica is put in an air-permeable inner bag to be sealed, and then the inside of an air-impermeable outer body is sealed. In this state, the air in the exterior body is evacuated from the mouth portion to be discharged, and then the mouth portion of the exterior body is sealed by means such as thermocompression bonding to form an airtight structure.

On the other hand, the inner box 4 is provided with a bead portion 8 for supporting the shelf plate 7 as the partition body shown in FIG.
As shown in, a plurality of pieces are formed by horizontally extending from the back to the front. A convex bulge 9 is formed at the root of each bead 8 to extend in the same manner as the bead 8, so that a heat insulating material is provided between each bead 8 and the vacuum heat insulating panel 6. The space 10 is formed.

With this structure, the outer box 2 is assembled with the inner box 4 and the back plate 2 is attached, and then the foamed heat insulating material 12 is put into a state of undiluted solution from the injection port 11 formed in the bottom of the outer box 2 in advance. I am injecting. As a result, in the outer shell 5,
The foamed heat insulating material 12 foams, and the space portion other than the vacuum heat insulating panel 6 in the outer shell 5, for example, the entire bottom and back, the peripheral portion of each vacuum heat insulating panel 6, and the intermediate partition wall 3 are formed. Of the heat insulation material 10 in the inner box 4 at the same time.
Each bead portion 8 is also filled from (inside the bulging portion 9).

According to the above structure, the foam heat insulating material 12 filled in each heat insulating material space 10 is hardened, so that the rigidity of the root portion of the bead portion 8 of the inner box 4 is increased and the vacuum heat insulating is performed. The degree of binding with the panel 6 is also increased, and sufficient support strength can be obtained for supporting the shelf plate 7. Further, the foamed heat insulating material 12 filled in each of the heat insulating material spaces 10 and hardened supports the inner box 4 from the inside,
It becomes possible to prevent so-called sticking of the inner box 4.

Further, particularly in the above-mentioned structure, since the heat insulating material space 10 is formed by bulging the base portion of the bead portion 8 of the inner box 4 in a convex shape, the heat insulating material space 10 can be easily formed. You can

In contrast to the above, FIG. 5 shows a second embodiment of the present invention, in which a concave recess 13 is formed in the portion of the vacuum heat insulating panel 6 facing the bead portion 8 of the inner box 4. Thus, a heat insulating material space 14 that replaces the heat insulating material space 10 is formed between each bead portion 8 and the vacuum heat insulating panel 6, and the heat insulating material space 14 is filled with the foamed heat insulating material 12. Even in this case, the rigidity of the root portion of the bead portion 8 of the inner box 4 is increased and the degree of bonding with the vacuum heat insulating panel 6 is also increased by curing the filled foam heat insulating material 12. Therefore, it is possible to obtain a sufficient supporting strength for supporting the shelf board 7 and to easily form the heat insulating material space 14.

FIG. 6 shows a third embodiment of the present invention.
When the partition body is a separate intermediate partition wall 15 that replaces the intermediate partition wall 3 described above, a convex bulge portion 17 is formed at the root of the bead portion 16 that supports this intermediate partition wall 15. By this, a heat insulating material space 18 is formed between the bead portion 16 and the vacuum heat insulating panel 6, and the heat insulating material space 18 is formed.
In this figure, the foamed heat insulating material 12 is filled, and even in this case, the same operational effect as described above can be obtained.

FIG. 7 shows a fourth embodiment of the present invention.
A concave recess 19 is formed in a portion of the vacuum heat insulating panel 6 facing the bead portion 16 supporting the intermediate partition wall box 15 described above, whereby a heat insulating material space is provided between the bead portion 16 and the vacuum heat insulating panel 6. 20 shows that the heat insulating material space 20 is formed so that the heat insulating material space 20 is filled with the foamed heat insulating material 12. Even in this case, the same operational effect as described above can be obtained.

FIG. 8 shows a fifth embodiment of the present invention.
The portion of the vacuum heat insulating panel 6 facing the bead portion 8 supporting the shelf plate 7 is referred to as a vacuum heat insulating panel 6 and another vacuum heat insulating panel 6.
As a portion adjacent to, a concave recess 21 is formed by these end portions, thereby forming a heat insulating material space 22 between the bead portion 8 and the vacuum heat insulating panel 6,
The heat insulating material space 22 filled with the foamed heat insulating material 12 is shown. Even in this case, the same effect as the above can be obtained.

FIG. 9 shows a sixth embodiment of the present invention.
The portion of the vacuum heat insulating panel 6 facing the bead portion 16 supporting the intermediate partition wall box 15 has the same vacuum heat insulating panel 6 as described above.
And the other vacuum insulation panel 6 are adjacent to each other, a concave depression 23 is formed by the end portions thereof, thereby forming a heat insulation material space 24 between the bead portion 16 and the vacuum insulation panel 6. In this case, the heat insulating material space 24 is filled with the foamed heat insulating material 12, and even in this case, the same operational effect as described above can be obtained.

FIGS. 10 and 11 show a seventh embodiment of the present invention, in which the inner box 4 has a plurality of bead portions 8 (also bulging portions 9), and an uneven strip portion 25 is formed between the respective portions. Then, the foam heat insulating material 12 is filled between the concave-convex strip portion 25 and the vacuum heat insulating panel 6, and in this case, the rigidity of the whole bead portion 8 is determined by the foam heat insulating material 12. Therefore, it is possible to obtain more sufficient supporting strength.

FIGS. 12 and 13 show an eighth embodiment of the present invention, in which a groove 26 is formed in the inner box 4 as a partition body supporting portion in place of the bead portion 8, and the groove / ridge portion 2 is provided between the groove portions 26.
7 is formed, and a concave depression 28 is formed in the portion of the vacuum heat insulating panel 6 facing each groove 26, whereby a heat insulating material space 29 formed between each groove 26 and the vacuum heat insulating panel 6, It is shown that the foam heat insulating material 12 is filled between the uneven strip portion 27 and the vacuum heat insulating panel 6,
Even in this case, the rigidity of the whole of the plurality of groove portions 26 can be increased by the foamed heat insulating material 12, and accordingly, more sufficient supporting strength can be obtained.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings. In particular, the entire heat insulating box is not limited to a refrigerator cabinet, and can be used in a warm storage or other constant temperature storage. It may be implemented by appropriately changing it within a range not departing from the gist such as a cabinet or the like.

[0024]

The heat insulating box of the present invention is as described above, and has the following effects. Firstly, a vacuum heat insulating panel is provided inside the outer shell composed of an outer box and an inner box, and a foam heat insulating material is injected in a state of undiluted solution and foamed to form a space other than the vacuum heat insulating panel. In the case of having a partition inside, the space is formed between the part supporting the partition of the inner box and the vacuum heat insulating panel, and the foam is formed in this space. By filling the heat insulating material, it is possible to increase the rigidity of the root part of the part that supports the partition of the inner box, and also increase the degree of bonding with the vacuum heat insulation panel, and to support the partition sufficiently firmly. You can

Second, since the heat insulating material space is formed by bulging the root portion of the portion supporting the partition of the inner box in a convex shape, the heat insulating material space can be easily formed. Thirdly, since the heat insulating material space is formed by recessing the portion of the vacuum heat insulating panel facing the portion supporting the partition body of the inner box in a concave shape, it is easy to form the heat insulating material space as described above. it can.

Fourthly, the inner box has a plurality of portions for supporting the partition body, and the uneven strip portions are formed between the respective portions, and the foam insulating material is provided between the uneven strip portions and the vacuum heat insulating panel. By filling the above, it is possible to increase the rigidity of the plurality of supporting portions as a whole, and to further firmly support the partition body.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a main portion showing a first embodiment of the present invention.

FIG. 2 is an overall exploded perspective view

FIG. 3 is a partially cutaway perspective view of the inner box.

FIG. 4 is a partial vertical sectional view.

FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 7 is a diagram corresponding to FIG. 1 showing a fourth embodiment of the present invention.

FIG. 8 is a view corresponding to FIG. 1 showing a fifth embodiment of the present invention.

FIG. 9 is a view corresponding to FIG. 1 showing a sixth embodiment of the present invention.

FIG. 10 is a perspective view of a main portion showing a seventh embodiment of the present invention.

11 is a diagram corresponding to FIG.

FIG. 12 is a view corresponding to FIG. 10 showing an eighth embodiment of the present invention.

FIG. 13 is a view corresponding to FIG. 11.

[Explanation of symbols]

2 is an outer box, 4 is an inner box, 5 is an outer shell, 6 is a vacuum heat insulating panel, 7 is a shelf (partition), 8 is a bead part (a part that supports the partition), 9 is a bulge part, 10 is a heat insulating material space, 12
Is a foam insulation material, 13 is a depression, 14 is an insulation material space,
Reference numeral 15 is an intermediate partition wall (partition body), 16 is a bead portion (a portion that supports the partition body), 17 is a bulge portion, 18 is a heat insulating material space, 19 is a depressed portion, 20 is a heat insulating material space, and 21 is a depressed portion. , 22 is a heat insulating material space, 23 is a depressed portion, 24 is a heat insulating material space, 25 is a concave-convex strip portion, 26 is a groove portion (portion that supports the partition body), 27 is a concave-convex strip portion, 28 is a depressed portion, and 29 is heat insulating. Indicates the timber space.

Claims (6)

[Claims] 1. A vacuum heat insulating panel is provided inside an outer shell body composed of an outer box and an inner box, and a foam heat insulating material is injected in a state of undiluted solution to foam and the other parts than the vacuum heat insulating panel. In the one having a partition body formed by filling the space portion, a heat insulating material space is formed between a portion supporting the partition material of the inner box and the vacuum heat insulating panel, and the heat insulating material space is provided with the above A heat-insulating box body, which is filled with a foam heat-insulating material. 2. The heat insulating box body according to claim 1, wherein the heat insulating material space is formed by bulging a root portion of a portion of the inner box that supports the partition body in a convex shape. 3. The heat insulating material space is formed by recessing a portion of the vacuum heat insulating panel facing the portion of the inner box supporting the partition body into a concave shape.
Insulated box body described. 4. The heat insulating box body according to claim 1, wherein the partition body is a shelf board. 5. The heat insulating box body according to claim 1, wherein the partition body is an intermediate partition wall. 6. The inner box has a plurality of portions for supporting the partition body, and a ridge-and-ridge portion is formed between the respective portions, and a foam heat insulating material is filled between the ridge-and-ridge portion and the vacuum heat insulating panel. The heat-insulating box body according to claim 1, wherein