JP3096604B2 - Thermal insulation panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating panel constituting a prefabricated structure such as a prefabricated refrigerator-freezer.

[0002]

2. Description of the Related Art A heat insulating panel of this type is described in, for example, Japanese Utility Model Publication No. Hei 6-17527 (B32B3 / 02). In this heat insulating panel, a pair of face materials are opposed to each other, and a frame material is arranged at each end along each side of the face materials. Then, the heat insulating material is injected and foamed into an internal space between the pair of face materials. It has been manufactured. By the way, the frame material is provided along each side of the face material in this way, but at the connection part of two sides adjacent to each other, that is, at the corner, the adjacent frame materials are connected so that the heat insulating material does not leak out. Need to connect.
And in order to prevent the heat insulating material from leaking out, it is also possible to cut and connect the end of the frame material in a complicated manner,
It takes time to cut. Therefore, the above-mentioned actual fairness 6-1752
In the heat insulating panel described in Japanese Patent Publication No. 7, the end of the frame material is cut straight, and a corner piece is arranged at a connection portion between the frame materials.

[0003]

By the way, this corner piece can prevent leakage of the heat insulating material. However, since the connection portion with the frame material has a U-shaped cross section, the corner piece can be injected. It is difficult to remove air during foaming. Therefore, an air vent hole is formed in this corner piece. In order to form this air vent hole, it is necessary to make a hole after the corner piece is manufactured, which increases the number of manufacturing steps and the cost. It is also conceivable to form a hole at the same time as producing the corner piece, but the mold for producing the corner piece becomes complicated and the cost for producing the mold increases. Also, the process of manufacturing the corner pieces may be complicated.

A heat insulating panel manufactured using this corner piece is connected to an adjacent heat insulating panel, but a connection portion between the corner piece and the adjacent heat insulating panel does not have a sealing structure. Therefore, cool air in a refrigerator such as a prefabricated refrigerator may leak from the connection between the corner piece and the heat insulating panel.

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 panel in which an air vent structure is easily formed when a heat insulating material is injected and foamed. It is a secondary object to provide a heat insulation panel that can reliably perform sealing between the heat insulation panel and an adjacent heat insulation panel.

[0006]

SUMMARY OF THE INVENTION A heat insulating panel (1, 3, 4) according to the present invention relates to a pair of face materials (10) arranged at a distance from each other and an end of the face material. A plurality of frame members (11) arranged together and closing a gap between the face members;
And a heat insulating material (12) filled in the space between the face materials.

[0007] In order to achieve the above object, at least one of the frame members is formed with an end surface portion (13) covering an end surface of the heat insulating panel, and the heat insulating panel is formed substantially at right angles to the end surface portion. An L-shaped frame member (L) having an L-shaped cross section, comprising a coupling portion (14) covering an end of one surface. Also, a corner piece (C, C2) disposed at an end of the L frame material
Includes a connecting portion (31) covering an end of the L frame material, and an engaging portion (33) formed on one surface of the connecting portion.
The engaging portion of the corner piece has a groove (33d) for air flow formed on the surface thereof, and is engaged with the inner surface of the end surface of the L frame member and the inner surface of the joint portion of the L frame member. An air circulation portion is formed between the engagement portion of the corner piece and the inner surface of the L frame member by the air circulation groove of the corner piece. Then, the adjacent heat insulating panel is connected to the connecting portion.

It is preferable that a seal portion (31c) is provided on the other surface of the joint portion of the corner piece.

[0009]

[Work] When filling a heat insulating material between a pair of face materials, L
Air is removed from the end of the frame material through the space of the engagement portion between the frame material and the face material. In addition, air is also vented from the air circulation portion formed by the air circulation groove of the corner piece.

[0010] Then, a seal portion is provided on the surface of the joint portion of the corner piece, and the heat insulating panel adjacent to this surface is joined. Therefore, the adjacent heat insulating panel and the corner piece are closely connected to each other, and the leakage of cool air from between the adjacent heat insulating panel and the corner piece is reduced.

[0011]

[Embodiment] Next, an embodiment of a heat insulating panel according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a prefabricated refrigerator-freezer assembled with heat insulating panels. FIG. 2 is an enlarged perspective view of a main part of the heat insulation panel, in which a part of a face material is cut away. FIG. 3 is a plan view of FIG. FIG. 4 is a sectional view taken along line IV-IV of FIG. FIG. 5 is an exploded perspective view of the frame member and the corner piece. FIG. 6 is a left side view of the corner piece. FIG. 7 is an enlarged perspective view of a main part of a heat insulating panel using a concave frame material. FIG. 8 shows FIG.
FIG.

First, a prefabricated refrigerator-freezer assembled using heat insulating panels will be described. In FIG. 1, a prefabricated refrigerator having a prefabricated structure is constituted by connecting a plurality of heat insulating panels 1 which are assembled panels. There are a ceiling panel 3 constituting a ceiling panel of the refrigerator and a floor panel 4 constituting a floor panel. Further, a heat insulating door 5 is attached to the front of the prefabricated refrigerator to be freely opened and closed.

In FIG. 2, a heat insulating panel 1 includes a pair of upper and lower substantially rectangular face members 10 and a frame member 11 disposed at an end.
And Then, the heat insulating material 12 is injected and foamed and filled in the internal space between the pair of face materials 10. The frame member 11 made of polyvinyl chloride or the like is disposed elongated along one side of the face member 10, and the frame member 11 has a convex frame member T and a concave frame member O having different cross-sectional shapes. And L
There are three types of frame materials L. The heat insulation panel 1 shown in FIG. 2 is a floor panel 4, in which an L frame material L is used for the right frame material 11 and a convex frame material T is used for the left frame material 11.

2 to 6, the L frame member L has an L-shaped cross section, and is formed at an end surface portion 13 covering the end surface of the floor panel 4 and at a substantially right angle to the end surface portion 13. And a connecting portion 14 for covering one end of the floor panel 4. A corrugation is formed on the outer surface of the end face portion 13,
An engagement portion 13a having an L-shaped cross section protrudes from the inner surface of the lower end. The engaging portion 13a extends in the longitudinal direction of the L frame material L, and the lower end, that is, the end of the face material 10 on the outside of the warehouse engages as shown in FIG. On the other hand, a pair of concave grooves 14a for connecting adjacent heat insulating panels 1 are formed in the connecting portion 14 of the L frame member L so as to extend in the longitudinal direction. At the end of the connecting portion 14, an engaging portion 14b with which the end of the upper surface material 10, that is, the end of the face material 10 on the inner side of the warehouse, extends in the longitudinal direction of the L frame material L.

The protruding frame member T covers the end surface of the floor panel 4, and engaging portions 21 each having a U-shaped cross section are formed at both ends in the width direction. The engaging portion 21 is elongated in the longitudinal direction of the convex frame material T, and the end of the face material 10 is engaged. A cylindrical seal 22 having a circular cross section is integrally formed outside the engaging portion 21. In addition, each engaging portion 2
A pair of outwardly protruding protrusions 24 are formed between the first and second protrusions T in the longitudinal direction of the convex frame member T. The concave frame material O of the adjacent heat insulating panel 1 is joined to the convex frame material T.

The L frame member L and the convex frame member T are cut perpendicularly to the longitudinal direction, and their ends are connected to the corner pieces C. This corner piece C is a substantially rectangular connecting portion 31 that covers the longitudinal end of the L frame material L.
An L frame material engaging portion 33 that engages with the inner surface of the L frame material L;
A face material engaging portion 35 formed at a lower end portion of the connecting portion 31;
The contact plate 37 is in contact with the convex frame material T.

A pair of protrusions 31a similar to the protrusions 24 of the convex frame material T are formed on the outer surface of the connecting portion 31, and adjacent heat insulating panels are connected. The connecting portion 31 is substantially rectangular as described above, but a pair of cuts 31b corresponding to the concave groove 14a are formed on the upper side thereof in accordance with the shape of the connecting portion 14 of the L frame material L. Further, along the lower side, right side, and upper side of the coupling portion 31, a fin-shaped seal portion 31c having a tip curved inward is formed. The gap between the heat insulating panel and the adjacent heat insulating panel is sealed by the seal portion 31c. In addition, the length of the seal portion 31c on the upper side is formed short.

On the other hand, on the inner surface of the connecting portion 31, the above-mentioned L frame material engaging portion 33, face material engaging portion 35 and contact plate 3 are provided.
7 are formed to protrude. This L frame material engaging portion 33
Has a shape substantially corresponding to the inner surface shape of the L frame material L, and is composed of a horizontal portion 33a disposed substantially horizontally and a vertical portion 33b disposed substantially vertically. This horizontal part 33
“a” is a portion that engages with the inner surface of the coupling portion 14 of the L frame member L, and has a pair of concave grooves 33c having the same shape as the concave groove 14a of the L frame member L. On the upper surface of the horizontal portion 33a, a thin groove 33d for air circulation is formed in a substantially vertical direction from the inner surface of the coupling portion 31. This groove 33d
When the corner piece C engages with the L frame material L, L
The joining portion 1 of the L frame member L extends in the longitudinal direction of the frame member L.
An elongate space is formed between the flat inner surface and the flat inner surface of the air passage 4, and the space serves as an air flow passage.

The vertical portion 33b of the L frame material engaging portion 33 of the corner piece C is a portion that engages with the end surface portion 13 of the L frame material L and has a flat plate shape. Then, on the lower end portion, so as to cover the engaging portion 13a of the end surface portion 13,
The cover part 33e is bent in an L shape.

Further, the surface material engaging portion 35 has substantially the same cross-sectional shape as the engaging portion 21 of the convex frame material T, and is formed with a U-shaped cross-section engaging groove. The end of the lower face material 10 is engaged with the face material engaging portion 35. The left side surface of the connecting portion 31 is covered with a contact plate 37.

When the floor panel 4 is manufactured, the L frame material L
L-frame material engaging portion 3 of corner piece C
3 is engaged. Then, the contact plate 3 of the corner piece C
The sealing material 51 shown in FIG. 4 is attached to the surface 7, and the end of the convex frame material T is brought into contact with the contact plate 37. Then, the end of the upper face material 10 is engaged with the engaging portion 14b of the connecting portion 14 of the L frame material L and the upper engaging portion 21 of the convex frame material T.
On the other hand, the end of the lower face material 10 is engaged with the lower engaging portion 21 of the convex frame material T, the face material engaging portion 35 of the corner piece C, and the end face portion 13 of the L frame material L. Engage with the part 13a. The other end of the face material 10 is also closed by a predetermined frame material. Then, the heat insulating material 12 is injected into the internal space formed by the pair of face materials 10 and foamed. At this time, the frame material 1 is passed through a space surrounded by the end of the face material 10 and the engagement portion 13a of the frame material 11.
Air is evacuated from the end in the longitudinal direction, and air is evacuated from the engaging portion between the face material 10 and the corner piece C. Further, as described above, L of the corner piece C
A groove 33d is formed in the frame material engaging portion 33 so that the L frame material L
An air flow path is formed with the inner surface of the air flow path, and air is also vented from this air flow path.

The floor panel 4 is formed of a combination of a concave frame material O and an L frame material L separately from the above-described structure formed of the combination of the convex frame material T and the L frame material L. There are things that are. This will be described with reference to FIGS. The same components as those of the combination of the convex frame material T and the L frame material L are denoted by the same reference numerals, and description thereof will be omitted.

The concave frame member O differs from the convex frame member T in that a pair of concave grooves 41 are formed instead of the projecting portions 24 of the convex frame member T.
Further, the engaging portion 21 is formed on the concave frame material O, but the seal 22 is not provided. The corner piece C2 used in combination with the concave frame material O is a corner piece C
A concave groove 43 is formed instead of the protruding portion 31a.
Further, the seal portion 31c is not provided. Then, using the concave frame material O in place of the convex frame material T and the corner piece C2 in place of the corner piece C, the aforementioned convex frame materials T and L are used.
Similarly to the floor panel 4 in combination with the frame L, the floor panel 4 in combination with the concave frame O and the L frame L is assembled and manufactured. When constructing a prefabricated refrigerator-freezer using the heat insulating panel 1 such as the floor panel 4, the connecting portion 3 of the corner piece C2 of the floor panel 4 shown in FIG.
1 is a corner piece C of the heat insulating panel shown in FIG.
Are joined.

In this manner, on one surface of the substantially rectangular connecting portion 31 of the corner pieces C and C2, the L frame material engaging portion 33 is formed along two sides, and the face material is formed along the other side. An engagement portion 35 is formed, and an end surface of another side is in contact with another frame material other than the L frame material L, such as a convex frame material T or a concave frame material O.

As described above, in the embodiment, since the seal portion 31c of the corner piece C is formed in a fin shape whose tip is curved inward, it can be easily formed integrally with the main body of the corner piece C. . This seal part 3
When 1c is formed in a cylindrical shape like the seal 22 of the convex frame material T, the shape of the corner piece C becomes complicated, and the cost increases.

The seal portion 31c is also formed in a direction substantially perpendicular to the surface of the face material 10, so that the longitudinal end of the convex frame material T can be more reliably sealed. Seal part 3
If 1c is provided only in the longitudinal direction of the convex frame material T, that is, in the direction parallel to the surface of the face material 10, cool air may leak from the right end in FIG. Thus, the seal portion 31c is formed along the three sides on the outer surface of the joint portion 31 of the corner piece C.

Since the corner pieces C and C2 are formed with the face material engaging portions 35 with which the ends of the outer face materials 10 are engaged, the face materials 10 and the face material engaging portions 35 are formed. Air is vented from between.

Further, a contact plate 37 is formed at the end of the corner piece C, C2 on the side where the convex frame material T or the concave frame material O comes into contact, so that the end face of the frame material T, O and the corner. The generation of a gap between the end faces of the pieces C and C2 can be prevented. If the abutment plate 37 is not provided, when a displacement corresponding to the thickness of the frame materials T, O or the corner pieces C, C2 occurs when positioning the frame materials T, O and the corner pieces C, C2. In addition, a gap is generated between the frame members T and O and the corner pieces C and C2, and leakage of the heat insulating material occurs.

Further, the connecting portion 31 of the corner pieces C and C2 has a substantially rectangular shape, and two adjacent sides thereof substantially match the sectional shape of the L frame material. Therefore, the size of the corner pieces C and C2 can be reduced,
The cost and material cost of the mold for producing the corner pieces C and C2 are reduced. Further, the storage space for the corner pieces C and C2 can be reduced. Further, since the corner pieces C and C2 are small, air is less stagnant on the inner surface of the corner piece when the heat insulating material is filled.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the present invention described in the appended claims. It is possible to make changes. Modified embodiments of the present invention will be exemplified below.

(1) In the embodiment, the heat-insulating panel 1 is a 100-mm heat-insulating panel, and the protrusion and the groove are formed in a pair on the frame material and the corner piece, respectively, but the number of the protrusion and the groove is one. However, three or more are also possible.

(2) In the embodiment, the frame material is made of PVC, but it can be made of another material such as aluminum. (3) In the embodiment, the floor panel 4 is used. However, the ceiling panel 3 has the same configuration and is used upside down. Further, it can be used as the side panel 2.

(4) In the embodiment, the side where the connecting portion 14 of the L frame member L is provided is described as an upper side.
The direction can be changed appropriately. Note that, in the heat insulating panel 1, the surface on the side where the connecting portion 14 of the L frame material L is provided is the inner surface of the heat insulating panel 1. Therefore, the surface on the side where the lower surface material 10 is arranged in the embodiment is the outer surface of the refrigerator.

(5) In the embodiment, one elongated groove 33d for air circulation is formed, but the number thereof can be changed as appropriate, and a plurality of grooves 33d can be formed. Also,
If the air flow passage can be formed, the shape of the groove 33d can be appropriately changed. Further, the groove 33d is formed in the horizontal portion 33a, but can be formed in the vertical portion 33b.

[0035]

The frame material of the present invention is constituted by an L-shaped L frame material. By the way, when a heat insulating material is filled between a pair of face materials, air is vented from an end of the frame material through a space of a joint between the frame material and the face material. Therefore, if the frame material is not a bag-like shape such as a U-shape but an L-shape, air is smoothly vented. And the corner piece of the present invention is engaged with the inner surface of the L frame material in which this air bleeding is performed smoothly, and the air is less likely to stay inside the corner piece.

Moreover, a groove for air circulation is formed in the corner piece, an air circulation part is formed with the inner surface of the L frame material, and air is vented from this air flow passage. Therefore, it is possible to reduce the occurrence of air stagnation inside the heat insulation panel and the generation of cavities. As a result, the heat insulating efficiency of the heat insulating panel is improved.

The air flow passage is formed by a groove for air circulation formed in the corner piece, and unlike the hole, the groove can be easily formed integrally with the corner piece. Therefore, the air flow passage can be formed without increasing the manufacturing cost and man-hour of the mold.

When a seal portion is provided on the surface of the joint portion of the corner piece, the adjacent heat-insulating panel and the corner piece are closely connected. The close contact reduces the leakage of cool air from between the adjacent heat insulating panel and the corner piece. Therefore,
There is no need to perform a sealing process after connecting the heat insulating panels. As a result, the post-processing sealing process is eliminated, and the number of manufacturing steps and manufacturing cost of the cooling storage manufactured by connecting the heat insulating panels can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a prefabricated refrigerator-freezer assembled with heat insulating panels.

FIG. 2 is an enlarged perspective view of a main part in which a part of a face material of the heat insulating panel is cut away.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is an exploded perspective view of a frame member and a corner piece.

FIG. 6 is a left side view of the corner piece.

FIG. 7 is an enlarged perspective view of a main part of a heat insulating panel using a concave frame material.

FIG. 8 is a plan view of FIG. 7;

[Explanation of symbols]

 C, C2 corner piece LL frame material 10 face material 11 frame material 12 heat insulating material 13 end face portion 14 connecting portion 31 connecting portion 31c seal portion 33 L frame material engaging portion (engaging portion) 33d groove

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 F25D 23/00-23/08 F16L 59/00-59/16 E04C 2 / 00-2/56

Claims (2)

(57) [Claims] 1. A pair of face members arranged at intervals from each other, and a plurality of frame members arranged to be engaged with ends of the face members and to close a gap between the face members. And a heat insulating material filled in a space between the face materials, wherein at least one of the frame materials is formed at an end face portion covering an end face of the heat insulating panel, and at a substantially right angle to the end face portion. A L-shaped member having an L-shaped cross section, the corner piece being arranged at the end of the L-frame material.
A coupling portion covering an end portion of the frame material, and an engagement portion formed on one surface of the coupling portion, wherein the engagement portion of the corner piece has a groove for air circulation formed on a surface thereof. And an inner surface of an end surface of the L frame member and an inner surface of a joint portion of the L frame member, and the engagement portion of the corner piece and the inner surface of the L frame member are formed by the air circulation groove. And an adjacent air-insulating panel is coupled to the other surface of the coupling portion of the corner piece. 2. A pair of face members arranged at an interval from each other, and a plurality of frame members arranged to engage with ends of the face members and to close a gap between the face members. And a heat insulating material filled in a space between the face materials, wherein at least one of the frame materials is formed at an end face portion covering an end face of the heat insulating panel, and at a substantially right angle to the end face portion. A L-shaped member having an L-shaped cross section, the corner piece being arranged at the end of the L-frame material.
A coupling portion that covers an end portion of the frame material, and an engagement portion formed on one surface of the coupling portion. The engagement portion of the corner piece includes an inner surface of an end surface portion of the L frame material and the engagement portion. The inner face of the joint of the L frame material is engaged, a seal portion is provided on the other surface of the joint of the corner piece, and an adjacent heat insulating panel is formed of a seal of the joint of the corner piece. A heat insulating panel, which is bonded to another surface.