JP2002048293A - Thermally insulated panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steady reinforcement structure for a thermally insulated panel, having a reinforced structure, and to maintain heat insulating effect for a long time. SOLUTION: The heat insulating panel according to the present invention has a built-in vacuum heat insulating material 50 and sandwiches a heat insulating member, whose cavity is filled with heat insulating parts 15, 17, such as a styrene slab material, an urethane foam slab material, an injection urethane foam material, by surface materials 11, 13. In addition, a reinforcement member 30 is arranged between one of the surface materials 13 and the vacuum heat- insulating material 50 so as to form a sandwiched panel structure, in which the heat-insulating part 17 is pinched between the reinforcement member 30 and the surface material 13, on one side (load side) of the vacuum heat insulating material 50.

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 using a vacuum heat insulating material for a refrigerator, a refrigerator car, and the like, and more particularly, to a heat insulating panel whose rigidity is improved by a reinforcing material.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. Hei 10 (1999) discloses a heat insulating panel used for a heat insulating wall of a mobile storage such as a freezer, a refrigerator, a refrigerator car and the like which requires temperature control in the refrigerator. -114245. Here, the disclosed configuration will be described with reference to FIG. The heat insulating panel 1 is formed by embedding a vacuum heat insulating material 6 in a heat insulating material 5 composed of a hard urethane foam or the like to form a core material 7, and disposing an outer plate 8 and an inner plate 9 on both surfaces of the core material 7. It is a sandwich insulation panel material.

[0003]

However, the sandwich heat insulating panel 1 having the above structure is used for a ceiling or a side wall of a refrigerator car, and an apparatus such as an evaporator is hung on the ceiling, or a load is fixed to a side wall surface. When a lashing rail is installed, a reinforcing plate is attached to the side wall surface of the fixture to improve the durability of the local load caused by the fixture.

With reference to FIG. 7, a description will be given of a reinforcing structure when a lashing rail is attached to a side wall surface made of, for example, a sandwich panel. Thermal insulation material 5 sandwiched between outer plate 8 and inner plate 9
The lashing rail 2 is attached to the wall member 1 composed of a heat insulating portion composed of the vacuum heat insulating material 6 and the fixing member 35 via the reinforcing plate 3.

However, such a configuration has the following problems. 1. If the vacuum insulation material 6 is damaged for some reason and breaks, the sandwich insulation panel 1
Since the bending rigidity and strength of the material itself are significantly reduced, the strength of the reinforcing material 3 alone cannot withstand long-time use. 2. Since a relatively large-sized mechanical fastening part 35 (a fastener such as a bolt and a nut or a rivet) is used for the reinforcing member 3, the vacuum heat insulating material 6 is often damaged when an operation such as drilling a pilot hole is performed. .

Accordingly, the present invention is to provide a heat insulating panel which prevents breakage of a vacuum heat insulating material, maintains high heat insulating efficiency for a long time, and has rigidity.

[0007]

The heat insulation panel of the present invention comprises:
A heat insulating member filled with a heat insulating part such as a styrene slab material, a urethane foam slab material, and a poured urethane foam material is sandwiched between surface materials, and a vacuum heat insulating material is provided therein. Then, a reinforcing member is provided between one of the surface materials (for example, the side on which a load is applied) and the vacuum heat insulating material, and a sandwich panel structure is formed on one surface of the vacuum heat insulating material by the reinforcing member, the surface plate, and the heat insulating portion. It has a configuration.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a sectional view of a heat insulating panel according to the present invention. The heat insulating panel 10 forming a wall structure such as a freezer has a configuration in which a heat insulating member including a vacuum heat insulating material 50 is sandwiched between an outer plate 11 and an inner plate 13 which are surface materials. The outer plate 11 and the inner plate 13 are made of a thin plate made of an aluminum alloy, a plastic composite material, or the like, and the heat insulating member is a vacuum heat insulating material 50 disposed at the center of the inner and outer plates. A first heat insulating portion 15 disposed between the first heat insulating portion 15 and the inner plate 1
2 and a second heat insulating part 1 disposed between the vacuum heat insulating material 50
7 is provided.

The vacuum heat insulating material 50 includes a heat insulating core material 51 made of a plastic communication foam material such as a urethane communication foam material or a styrene communication foam material, and a plastic film 53 covering the heat insulation core material 51. And a gas adsorbent 55 that adsorbs and fixes the gas entering the decompressed vacuum heat insulating material 50. First heat insulating part 15
The second heat insulating portion 17 is formed of a styrene slab material, a urethane foam slab material, an injected urethane foam material, or the like.

When a wall surface of a refrigerator car or the like is formed, the inner plate 13 and the vacuum heat insulating material 5 located on the side on which a load is applied, for example, the inside of the refrigerator, are provided with respect to the vacuum heat insulating material 50 at the center.
The reinforcing plate member 30 is arranged between the two.

The reinforcing plate 30 is a member having high bending rigidity such as a metal plate (aluminum, steel, SUS, etc.), a glass fiber reinforced plastic (synthetic resin) plate, or a plastic plate. The reinforcing plate 30 is a heat insulating panel 10
, Or strip reinforcing plate members 31 are disposed at appropriate intervals in the vertical direction of the panel (see FIG. 2), or strip reinforcing plate members 33 are disposed at appropriate intervals in the longitudinal direction of the panel. (See FIG. 3).

As described above, the heat insulating panel 10 is a sandwich panel in which the heat insulating portion 17 is sandwiched between the inner plate 13 and the reinforcing plate 30 on the load side with respect to the vacuum heat insulating material 50 located at the center in the thickness direction. Forming the structure. With this configuration, at the time of piercing the stopper hole when attaching a member to the surface of the inner plate 13, the reinforcing plate member 30 prevents the piercing tool such as a drill from advancing and prevents the vacuum heat insulating material 50 from being damaged. Further, even if the vacuum heat insulating material 50 is damaged for some reason, the rigidity of the heat insulating panel is maintained by the reinforcing plate 30.

Next, a case where the above-mentioned heat insulating panel is used as a wall surface of a freezer or the like will be described. (1) In the case where the heat insulating panel is used as a ceiling plate and an evaporator is attached, see FIG. 4 A vacuum heat insulating material 50 is arranged on the outer plate 11 via the first heat insulating portion 15. Then, along with the vacuum heat insulating material 50, the reinforcing plate 3
0, and the second heat insulating portion 17 is provided between the inner plate 13 and the reinforcing plate 30. The auxiliary plate 40 is arranged on the inner plate 13 where the evaporator 100 is to be mounted, and a stopper hole is made.
The evaporator 100 is attached to the heat insulating panel 10 as a ceiling plate by the stopper 45. At this time, when drilling the stopper hole, the drilling device such as a drill is prevented from further proceeding in the panel thickness direction by the reinforcing plate member 30 and the vacuum heat insulating material 50 is not damaged. Moreover, the rigidity of the heat insulating panel 10 used as a ceiling plate is maintained for a long period of time against the load in the vertical direction of the panel 10 by the inner and outer plates 11 and 13 and the reinforcing plate 30. Further, the vacuum heat insulating material 50 is protected from breakage, and an efficient heat insulating effect is maintained.

(2) When using a heat insulating panel as a side wall plate and attaching a lashing rail: see FIG. 5 A vacuum heat insulating material 50 is arranged via the first heat insulating portion 15 of the outer plate 11, and the vacuum heat insulating material 50 Plate material 3 arranged along
The lashing rail 150 is attached to the inner plate 13 where the second heat insulating portion 17 is disposed between the inner plate 13 and the inner plate 13. The lashing rail 150 is disposed in parallel with the front and rear direction of the storage wall surface. Inner plate 1 where lashing rail 150 is installed
3, an auxiliary plate 60 having a lashing rail width is disposed in parallel in the front-rear direction, a stopper hole is formed, and the stopper plate 65 is attached to the heat insulating panel 10 having the lashing rail 150 as a side wall surface. At this time, when drilling the stopper hole, the drilling instrument such as a drill is prevented from further proceeding in the panel thickness direction by the reinforcing plate member 30, and the vacuum heat insulating material 50 is not damaged.

Further, an auxiliary member 66 may be used in place of the auxiliary plate. The auxiliary member 66 is disposed inside the second heat insulating portion 17 on the inner surface where the lashing rail 150 is mounted with the stopper 65. Since the auxiliary member 66 also has the reinforcing plate member 30 interposed between it and the vacuum heat insulating material 50, the auxiliary member 66 does not directly contact the vacuum heat insulating material 50, and the heat insulating effect of the vacuum heat insulating material 50 can be maintained for a long time. Achieved.

In this embodiment, the example in which the reinforcing plate is disposed along the vacuum heat insulating material has been described. However, the reinforcing plate is directly adhered to the vacuum heat insulating material or disposed between the vacuum heat insulating material. A reinforcing plate may be provided via a slab.

[0017]

As described above, the heat insulation panel of the present invention can maintain the heat insulation effect of the thin heat insulation panel in which the vacuum heat insulating material is installed for a long period of time, and can reduce the vibration and the static load due to the member attachment. It is possible to maintain the rigidity and strength of the panel against a load for a long time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a heat insulating panel according to the present invention.

FIG. 2 is a cross-sectional view showing an arrangement form of a reinforcing plate.

FIG. 3 is a sectional view showing another arrangement of a reinforcing plate.

FIG. 4 is an explanatory view of an evaporator mounting portion on a ceiling panel of a freezer.

FIG. 5 is an explanatory view of a lashing rail attachment point on a side wall panel of a freezer.

FIG. 6 is a sectional view of a heat insulating panel using a conventional vacuum heat insulating material.

FIG. 7 is an explanatory diagram of a configuration of a lashing rail disposing portion in a conventional heat insulating panel.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 heat insulating panel 11 outer plate 13 inner plate 15 first heat insulating portion 17 second heat insulating portion 30 reinforcing plate 50 vacuum heat insulating material 51 core material 53 synthetic resin film 55 gas adsorbent 60 auxiliary plate 65 stopper 66 auxiliary member 100 evaporator 150 lashing rail

Claims (3)

[Claims] 1. A heat insulating member comprising a vacuum heat insulating material and a heat insulating portion filled around the vacuum heat insulating material; a surface plate disposed on both surfaces of the heat insulating member; A heat insulating panel comprising: a reinforcing plate disposed between the heat insulating material; and a sandwich structure formed between the vacuum heat insulating material and the surface plate by the reinforcing plate, the surface plate, and the heat insulating portion. 2. The heat insulating panel according to claim 1, wherein the reinforcing plate is a resin plate. 3. The heat insulating panel according to claim 1, wherein the reinforcing plate is a metal plate.