JP6980429B2 - Insulation panel - Google Patents

Description

The present invention relates to a heat insulating panel.

Conventionally, a prefabricated storage that forms a box shape by assembling a plurality of heat insulating panels to each other is known. The heat insulating panel used in such a prefabricated storage is a hollow outer shell composed of a pair of surface plates arranged facing each other at intervals and a frame material made of synthetic resin arranged at the periphery thereof. It is formed by foaming and filling the portion with a heat insulating material. When injecting and filling the foamable heat insulating material into the hollow part of the outer shell, the heat insulating material may not be filled in the hollow part due to the air in the hollow part of the outer shell and the gas generated by the foaming of the heat insulating material. be. Therefore, in order to prevent the occurrence of such unfilled portions of the heat insulating material, there is known a configuration in which a hole for venting gas is provided (see Patent Document 1 below). In the configuration of Patent Document 1, a concave portion into which a convex portion of another heat insulating panel is fitted is formed on the outer surface of the frame material. The above-mentioned hole for venting gas is provided at the center of the bottom surface of the recess in the width direction.

Japanese Unexamined Patent Publication No. 2015-31447

In the configuration having a hole for venting gas as in Patent Document 1, the heat insulating material slightly leaks to the outside of the frame material through the hole and solidifies. Therefore, it is necessary to remove the leaked heat insulating material. In the configuration in which the hole is formed on the bottom surface of the recess as in Patent Document 1, the heat insulating material leaking from the hole is distributed from the recess to the bottom of the recess centering on the hole. The work of removing the heat insulating material becomes difficult.

The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a heat insulating panel capable of easily removing a heat insulating material leaking from a hole.

In order to solve the above problems, the heat insulating panel of the present invention includes a pair of surface plates arranged to face each other while maintaining a space between them, a frame material arranged on the peripheral edge of the pair of surface plates, and the pair of tables. The interior space surrounded by the face plate and the frame material is provided with a heat insulating material foam-filled, and a recess extending along the extending direction of the frame material is formed on the surface of the frame material, and the recess is formed. Each of the pair of side surfaces is composed of a pair of protrusions extending along the extending direction of the frame material, and the internal space and the recess are communicated to at least one of the pair of protrusions. The hole on the hole is formed, and the opening on the concave side in the hole is provided at the connection portion between the tip surface of the one protrusion and the side surface of the one protrusion on the other protrusion side. It is characterized by being. According to the above configuration, when the heat insulating material is filled, the heat insulating material leaking from the opening of the hole is arranged in the recess in the vicinity of the tip of the protrusion. Therefore, the heat insulating material can be easily removed as compared with the case where the leaked heat insulating material leaks from the bottom surface of the recess.

Further, the hole portion has an internal passage that communicates with the internal space and an external passage that communicates with the opening at one end and communicates with the internal passage at the other end. The connecting portion between the inner side passage and the outer side passage can be formed in a stepped shape. When the heat insulating material is filled, the heat insulating material flows from the internal space to the concave side through the inner side passage and the outer side passage. If the connecting portion between the inner side passage and the outer side passage has a stepped structure, the heat insulating material does not easily flow in the passage as compared with the linear structure, so that the heat insulating material leaks to the outside. Can be suppressed.

According to the present invention, it is possible to provide a heat insulating panel capable of easily removing the heat insulating material leaking from the hole.

A perspective view showing a prefabricated storage house configured by using the heat insulating panel according to the embodiment of the present invention. Front view of insulation panel Longitudinal section of insulation panel Perspective view of the corner frame material from the front side Perspective view of the corner frame material from the back side Top view of the corner frame material as viewed from the first wall 41 side Cross-sectional view showing the corner frame material and the foaming jig (corresponding to the view cut by the VII-VII line in FIG. 6)

An embodiment of the present invention will be described with reference to FIGS. 1 to 7. As shown in FIG. 1, the refrigerator main body 10 of the prefabricated refrigerator according to the present embodiment is formed in a box shape by assembling a plurality of heat insulating panels 20. An opening serving as an entrance / exit is formed on the front wall of the refrigerator body 10, and a slide door 12 for opening / closing the opening is provided in the opening. Examples of the heat insulating panel 20 include a roof panel 15, a base panel (forming the bottom surface, not shown), side panels 17 arranged on the side surfaces and front and rear surfaces, and corner panels 19 arranged at the four corners of the peripheral wall. Can be done.

The structure of the heat insulating panel 20 will be described by taking the side panel 17 as an example. As shown in FIGS. 2 and 3, the heat insulating panels 20 are arranged on a pair of surface plates 23, 23 that are arranged facing each other while maintaining a distance from each other, and a pair of surface plates 23, 23 that are arranged on the peripheral edge of the surface plate 23. The frame material 30 constituting the outer shell body 21 and the heat insulating material 25 foam-filled in the internal space 27 surrounded by the pair of surface plates 23, 23 and the frame material 30 are provided. The surface plate 23 is made of, for example, a metal plate, the frame material 30 is made of a synthetic resin molded product such as hard vinyl chloride, and the heat insulating material 25 is made of a foamed resin. The shape of the heat insulating panel 20 is not limited to a rectangular shape and can be changed as appropriate.

As shown in FIG. 2, the frame member 30 includes a linear outer peripheral frame member 31 and a corner frame member 40 that connects the ends of two adjacent outer peripheral frame members 31 and 31 to each other. The outer peripheral frame member 31 is formed by, for example, extrusion molding, and has a cross-sectional shape (see FIG. 3) having irregularities over the entire length. As shown in FIG. 3, the peripheral end portion of the surface plate 23 is bent at a right angle to the main surface portion, and the difference formed in the insertion groove 33 formed in the outer peripheral frame member 31 and the corner frame member 40. It is inserted into the groove 40A (see FIG. 4). Further, as shown in FIG. 3, a concave portion formed by a pair of convex portions 37, 37 is provided on the surface of the outer peripheral frame member 31 (side surface of the heat insulating panel 20). By fitting the convex portion (not shown) of the adjacent heat insulating panel 20 into the concave portion, the heat insulating panels 20 are connected to each other. Further, the outer shell 21 of the heat insulating panel 20 is provided with an injection hole (not shown) for injecting the heat insulating material 25.

Next, the configuration of the corner frame material 40 will be described by way of exemplifying the corner frame material 40 on the left side of FIG. The corner frame member 40 is formed by, for example, injection molding, and includes, as shown in FIG. 4, a first wall portion 41 and a second wall portion 51 connected in a substantially L-shape in a plan view. Further, the side end portion of the first wall portion 41 and the side end portion of the second wall portion 51 are connected by an L-shaped connecting wall portion 40B. The surface of the first wall portion 41 constitutes the side surface of the heat insulating panel 20 together with the surface of the outer peripheral frame member 31, and the end portion on the outer peripheral frame member 31 side is a stepped portion 42 having a relatively low step portion 42. The end portion of the outer peripheral frame member 31 is fitted to the frame member 31. As a result, the surface of the first wall portion 41 and the surface of the outer peripheral frame member 31 are flush with each other. In FIG. 4, the outer peripheral frame member 31 is schematically shown by a two-dot chain line. The surface of the second wall portion 51 constitutes the side surface of the heat insulating panel 20, and the end portion on the outer peripheral frame member 31 side is a stepped portion 52 having a low stepped shape. The ends are fitted.

A pair of protrusions 43, 43 are provided on the surface of the first wall portion 41. The pair of protrusions 43, 43 extends along the extension direction (extension direction of the frame member) of the outer peripheral frame member 31 connected to the first wall portion 41, and the pair of protrusions 43, 43 are provided on the outer peripheral frame member 31. It is configured to be continuous with the protrusions 37 and 37 (see FIG. 3). A pair of protrusions 53, 53 are provided on the surface of the second wall portion 51. The pair of protrusions 53, 53 extends along the extension direction (extension direction of the frame member) of the outer peripheral frame member 31 connected to the second wall portion 51, and the pair of protrusions 53, 53 are provided on the outer peripheral frame member 31. It is configured to be continuous with the ridges (not shown). The protrusion 43 and the protrusion 53 are connected in an L-shape.

Further, on the surface of the first wall portion 41, a recess 45 (groove portion) extending along the extending direction of the outer peripheral frame member 31 connected to the first wall portion 41 is formed. The recess 45 is provided at a position sandwiched between the pair of protrusions 43, 43, and the pair of side surfaces 45A, 45A in the recess 45 are formed by the pair of protrusions 43, 43, respectively. As shown in FIGS. 4 and 7, the side surface 45A has a stepped shape in which the front side (upper side in FIG. 7) of the recess 45 is lower than the back side (side close to the bottom surface 45B). Further, on the surface of the second wall portion 51, a recess 55 extending along the extending direction of the outer peripheral frame member 31 connected to the second wall portion 51 is formed. The recess 55 is provided at a position sandwiched between the pair of protrusions 53 and 53, and the pair of side surfaces 55A and 55A in the recess 55 are formed by the pair of protrusions 53 and 53, respectively.

As shown in FIG. 4, a hole 46 is formed in the protrusion 43 of the first wall 41. The hole 46 is a degassing hole for discharging the gas generated when the heat insulating material 25 is foamed and filled in the internal space 27 to the outside. As shown in FIG. 7, the hole portion 46 is formed so as to penetrate the first wall portion 41 in the thickness direction, and is configured to communicate the internal space 27 and the recess 45. The hole 46 has an inner passage 47 and an outer passage 49. The internal passage 47 is a passage that communicates with the internal space 27 (see also FIG. 5). The external passage 49 is a passage that communicates with the opening 48 opened on the recess 45 side on one end side (upper side of FIG. 7). The outer side passage 49 is connected to the inner side passage 47 on the other end side, and the connecting portion 50 between the outer side passage 49 and the inner side passage 47 has a stepped shape.

As shown in FIG. 4, the opening 48 on the recess 45 side of the hole 46 is formed in the connection portion 43D between the tip surface 43A of the protrusion 43 and the side surface 45A (the side surface of the other protrusion 43 side) of the protrusion 43. It is provided. That is, the opening 48 is provided over both the front end surface 43A and the side surface 45A. Further, as shown in FIG. 6, the hole portion 46 has a rectangular shape in a plan view, and the pair of hole portions 46, 46 are in the width direction of the corner frame member 40 (horizontal direction in FIG. 6, the heat insulating panel 20). They are arranged side by side in the thickness direction). Further, the hole portion 46 is formed in the protrusion portion 43 at a position closer to the step portion 42.

Next, the effect of this embodiment will be described. In the present embodiment, after the outer shell 21 is assembled, the outer shell 21 is held by a foaming jig, and the raw material liquid of the heat insulating material 25 is injected into the internal space 27 of the outer shell 21. FIG. 7 illustrates a presser jig 60 for holding the corner frame member 40. In FIG. 7, the surface plate 23 is not shown. The presser jig 60 is formed with a holding recess 61 for holding the corner frame member 40. In the state of being set in the presser jig 60, the opening of the recess 45 of the corner frame member 40 is covered by the bottom surface of the holding recess 61, but a space is secured in the recess 45. When the raw material liquid of the heat insulating material 25 is foamed and filled, the air in the internal space 27 (or the gas if the gas is filled before foaming) and the gas generated by the foaming are formed in the pores. It is discharged from the 46 to the recess 45. Further, a part 25A of the foamed heat insulating material 25 may leak to the outside from the hole 46.

As shown in FIG. 7, in the present embodiment, the opening 48 of the hole 46 is provided from the tip surface 43A to the side surface 45A of the protrusion 43. With such a configuration, when the heat insulating material 25 is filled, a part 25A of the heat insulating material 25 leaking from the opening 48 of the hole 46 extends from the opening 48 toward the bottom surface side of the holding recess 61. Solidify. That is, a part 25A of the heat insulating material 25 tends to move away from the bottom surface 45B of the recess 45. As a result, a part 25A of the heat insulating material 25 is arranged near the tip of the protrusion 43 in the recess 45. Therefore, the heat insulating material 25 can be easily removed as compared with the case where the leaked heat insulating material 25 leaks from the bottom surface 45B of the recess 45. Since a part 25A of the solidified heat insulating material 25 has a shape extending from the opening 48 as shown in FIG. 7, it can be broken from its root by a relatively small external force and can be easily removed. ..

Further, the hole portion 46 has an inner side passage 47 and an outer side passage 49, and the inner side passage 47 and the outer side passage 49 are connected in a stepped shape. By doing so, when the heat insulating material 25 is filled, the heat insulating material 25 flows from the internal space 27 to the recess 45 side through the internal side passage 47 and the external side passage 49. If the inner passage 47 and the outer passage 49 have a stepped structure, the heat insulating material 25 is less likely to flow in the passage than the linear structure, so that the heat insulating material 25 leaks to the outside. Can be suppressed.

<Other embodiments>
The present invention is not limited to the embodiments described above and the drawings, and for example, the following embodiments are also included in the technical scope of the present invention.

(1) In the above embodiment, the heat insulating panel used for the prefabricated refrigerator is exemplified, but the present invention is not limited to this. The heat insulating panel can be used, for example, in a prefabricated storage (freezer, constant temperature and high humidity storage, clean room, etc.) other than the prefabricated refrigerator.
(2) In the above embodiment, the configuration in which the hole portion 46 for venting gas is formed in the corner frame member 40 is exemplified, but the present invention is not limited to this. For example, the hole 46 may be formed in the outer peripheral frame member 31.
(3) In the above embodiment, the configuration in which the hole 46 is formed in each of the pair of protrusions 43, 43 is illustrated, but the hole 46 may be provided only in one of the protrusions 43.
(4) In the above embodiment, the connecting portion 50 of the inner side passage 47 and the outer side passage 49 may not have a stepped shape, and may have a linear shape, for example.

20 ... heat insulating panel, 23 ... surface plate, 25 ... heat insulating material, 27 ... internal space, 30 ... frame material, 43 ... protrusion, 43A ... tip surface in protrusion, 43D ... connection part, 45 ... recess, 45A ... side surface (Side surface in recess), 46 ... hole, 47 ... internal passage, 48 ... recess side opening in hole, 49 ... external passage, 50 ... connection portion (connection portion between internal passage and external passage)

Claims (2)

A pair of face plates that are placed facing each other while keeping a distance from each other,
The frame material arranged on the peripheral edge of the pair of surface plates and
The pair of surface plates and the heat insulating material foam-filled in the internal space surrounded by the frame material are provided.
On the surface of the frame material, a pair of protrusions extending along the extending direction of the frame material and a recess provided at a position sandwiched between the pair of protrusions are formed.
A pair of side surfaces of the recess is constituted respectively by the protruding portions of the front Symbol a pair,
Of the pair of protrusions, at least one of the protrusions is formed with a hole that penetrates the protrusion in the depth direction of the recess and communicates between the internal space and the outside.
The outer opening in the hole is
It is provided over the side surface toward the concave portion from the distal end surface of the one projecting portion, the insulating panel. The hole is
An internal passage that communicates with the internal space,
It has an external passage that communicates with the opening on one end side and also communicates with the internal passage on the other end side.
The heat insulating panel according to claim 1, wherein the connecting portion between the inner side passage and the outer side passage has a stepped shape.

Images