JP2003042388A - Heat-insulating panel and container using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-insulating panel capable of restraining conduction of a temperature of a panel surface to an underside to the minimum, light weighted, and capable of having rigidity on the panel itself, and to provide a container using it. SOLUTION: This heat-insulating panel is provided with a spacer 3 constituted by connecting a plurality of pins 301 by a supporting material 302, a pair of plate-shaped panel materials 2 arranged to confront to each other with the spacer 3 between them, a narrow and long airtight plate 4 constituted by a metallic thin plate airtightly connecting a pair of the plate shaped panel materials 2 at a whole periphery part thereof, and an air extraction means 6 provided on an optional position of the panel material 2 or the airtight plate 4.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a heat insulating panel used for various products and a container using the same,
More specifically, the present invention relates to a heat insulating panel that makes it possible to create a vacuum inside the panel and a container using the heat insulating panel.

[0002]

2. Description of the Related Art Conventionally, in the transportation of cargo, in order to prevent the cargo to be transported from falling, and to efficiently stack the cargo, a cargo carrier such as a truck or a container or the like is used. Equipment (hereinafter referred to as "container") is being equipped.

[0003] In addition, also in the case of carrying and storing luggage and the like by aircraft and ships, containers are used that can store the luggage efficiently and are convenient to carry.

By the way, these containers are generally
It is configured by assembling a panel material made of metal such as aluminum into a square shape by a frame, but as is well known, the metal has high thermal conductivity, and in the case of aluminum, for example,
Since a 1-cm square panel has a high thermal conductivity of 5000 calories per second, a container using this has a problem that the temperature inside the container rises. Therefore, transporting items that require freezing or refrigeration,
In the case of storage, it is necessary to fully operate the cooler or the like in order to suppress the temperature rise in the container, and as a result, there is a drawback that power consumption increases.

In this respect, by using two panel materials,
A method of preventing the temperature on the front surface of the panel from being conducted to the back surface by constructing a panel by interposing a heat insulating material between the panel materials is actually considered. In the heat insulation panel used for the outer frame of
A heat insulating panel with a heat insulating material inside is used. Then, in these heat insulating panels, an effective heat insulating effect can be expected as compared with a panel using only a panel material made of metal such as aluminum.

[0006]

However, when the inside of the panel is filled with the heat insulating material, as described above, the thermal conductivity is lower than that of the conventional panel composed of only the metal panel material. , Even in such a case, it is not possible to completely prevent the temperature of the panel surface from being conducted to the back surface of the panel through the heat insulating material or the like, which means that the panel material used for the outer wall of the building or the like described above. Is also a problem that can be said. Therefore, conventionally, it has been desired to provide a heat insulating panel that can suppress the temperature of the panel surface from being conducted to the back surface of the panel, as compared with the conventional heat insulating panel.

Further, in a panel using aluminum or the like as a panel material, there is a tendency to reduce the thickness of the panel in order to reduce the cost and the total weight.
This results in a panel that does not have rigidity, and when this is used in a container, for example, there is a problem in that it is necessary to firmly fix the panel by a frame in order to give the panel rigidity.

Therefore, the present invention is capable of minimizing the temperature of the front surface of the panel conducted to the rear surface, is lightweight, and is capable of providing rigidity to the panel itself, and the heat insulating panel. The problem is to provide a container using.

[0009]

The heat insulating panel of the present invention comprises:
A spacer formed by connecting a plurality of pins with a support material, a pair of plate-shaped panel materials arranged so as to face each other with the spacer interposed therebetween, and the pair of panel materials over the entire peripheral portion thereof. A heat-insulating panel comprising an elongated airtight plate made of thin metal plates airtightly connected to each other, and an air venting means provided at any position of the panel material or the airtight plate, wherein the air venting means is It is characterized in that it is possible to bring the inside into a vacuum state by sucking the air inside through it.

Further, in the container of the present invention, the front panel, the pair of side panels, and the upper panel are assembled into a substantially rectangular shape by using the connecting frame, and the door panel is opened and closed on the side facing the front panel. In a freely attachable container, at least the front panel,
It is characterized in that either the pair of side panels or the upper panel is the above-mentioned heat insulating panel.

Further, according to another container of the present invention, a front panel, a pair of side panels, an upper panel and a floor panel are assembled in a substantially rectangular shape by using a connecting frame and face the front panel. In the container in which a door panel is openably and closably attached to the side, at least one of the front panel, the pair of side panels, and the upper panel is the heat insulating panel.

In the heat insulating panel of the present invention, the entire peripheral portions of the pair of panel materials arranged so as to oppose each other via the spacer are airtightly connected by the airtight plate, whereby air inside the panel is evacuated. It is possible to make the inside of the panel a vacuum state.

As described above, when a hollow panel body is formed by using two panel materials and a heat insulating material is interposed in the panel body, heat of the panel surface is generated through the heat insulating material. There is a problem that it conducts to the back surface of the panel, and when the inside of the panel body is made hollow, air inside the panel body causes convection, which causes the temperature of the panel surface to be conducted to the back surface of the panel. However, in the present invention, since it is possible to make the inside of the panel a vacuum state, by making the inside of the panel body a vacuum state during use, heat conduction inside the panel is suppressed, and the temperature of the panel surface is reduced. It is possible to effectively prevent conduction to the back surface of the panel.

Further, in the present invention, since the spacer is arranged in the panel body, it is possible to prevent the pair of panel materials from being combined even when the panel body is evacuated, and the spacer is Since a pair of panel materials are compressed by a strong pressure through the panel, the panel itself becomes rigid and becomes a structure. Therefore, when this is used as a panel of a container, for example, even if a thin panel material is used, it is not necessary to fix the panel material with a strong frame.

Further, in the heat insulating panel of the present invention, since the pair of panel materials are airtightly connected to each other by using the airtight plate made of a thin metal plate, the inside of the panel can be more effectively brought into a vacuum state. In addition to being possible, it is possible to minimize the heat transfer through this airtight plate.

In the container of the present invention, since the heat insulating panel thus constructed is used, the temperature inside the container can be kept constant.

[0017]

EXAMPLE An example of the heat insulating panel of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing the structure of the heat insulating panel of this example from the side, and FIG. It is the figure which showed the state which decomposed | disassembled the heat insulation panel of an example, Furthermore, FIG. 3 is a perspective view of the heat insulation panel of a present Example, 1 is a heat insulation panel of a present Example in a figure.

The heat insulating panel 1 of the present embodiment is a hermetically-sealed structure in which a pair of panel materials, a spacer interposed between the pair of panel materials 2 and the pair of panel materials are hermetically connected to each other in the entire peripheral portion. And a plate.

That is, in the figure, 2 is a pair of panel materials, and in the present embodiment, each of the pair of panel materials 2 is made of a stainless steel plate, and its wall thickness is about 1.6 mm. I am trying. And in this embodiment,
The pair of panel materials 2 are arranged so as to face each other with the spacer 3 interposed therebetween, and further, the airtight plates 4 are fixed to the entire peripheral portions of the pair of panel materials 2 arranged so as to face each other. The panel material 2 is airtightly connected at its peripheral portion.

The airtight plate 4 will be described below. The airtight plate 4 in this embodiment is an elongated shape made of a thin metal plate, and its cross-sectional shape is substantially U-shaped as shown in the drawing. I am trying. Then, the panel material 2 is fixed to the entire peripheral portion of the panel material 2 opposed to each other via the spacer 3, thereby connecting the pair of panel materials 2 and keeping the inside of the panel airtight.

In this embodiment, the airtight plate 4 is made of stainless steel having a thickness of 0.05 to 0.1 mm and is fixed to the panel material 2 by welding. However, the thickness of the airtight plate 4 is always 0.05 to 0.1 m.
The thickness is not limited to m and may be any thin plate.

As a method of fixing, it is preferable to adopt pressure bonding to a panel, welding, or the like, but the method of fixing is not particularly limited, and any method can be used as long as the inside of the panel can be made airtight. You may fix by the method of.

Further, the shape of the airtight plate 4 does not necessarily have to be a substantially U-shaped cross section, and for example, as shown in FIG. 4, the airtight plate 4 shown in FIG. You may form a recessed part and mount the molding material 5 in this recessed part. In such a case, the molding material 5 may be formed into a rod shape that can be fitted in the recess, and the inside may be hollow to reduce the weight, and further, the entire urethane urethane may be used.

Next, in FIG. 1, reference numeral 3 is a spacer. As described above, in this embodiment, the spacer 4 is interposed between the pair of panel materials 2.

The spacer 3 will be described in detail. In FIG. 2, reference numeral 301 is a pin, and the spacer 3 in this embodiment is provided with a plurality of cylindrical pins 301. The vicinity of an intermediate portion along the direction is connected to each other by a rod-shaped support member 302 so as to form a lattice shape as a whole. Further, both ends of the pin 301 are in contact with the pair of panel materials 2.

As described above, the heat insulating panel 1 of this embodiment has a structure in which the pair of flannel materials 2 are supported by both ends of the pin 301, and the contact area between the panel material 2 and the spacer 3 is minimized. As compared with the case where the hollow panel body is filled with the heat insulating material, the conduction of heat from the front surface of the panel to the back surface of the panel can be minimized.

In this embodiment, the pin 30 is used.
1 and the support member 302 are also formed of hard urethane, and more specifically, the entire spacer 3 is integrally formed of hard urethane. However, it is not always necessary to integrally form the entire spacer.

The support member 302 does not necessarily have to have a lattice shape, and may have any shape as long as a plurality of pins 301 can be connected.

Further, regarding the shape of the pin 301,
It does not necessarily have to be cylindrical, and may be cylindrical or another shape. For example, in FIG.
FIG. 6 is a perspective view showing another form of the spacer 3, and in the spacer shown in FIG. 5, a pair of pins 301 formed in a substantially conical shape is used to form a surface including a surface of a support member 302 formed in a lattice shape. The substantially conical pin 3 is provided on both sides orthogonal
The apexes of 01 are connected to form the spacer 3.

Next, in FIG. 1, reference numeral 6 is a pipe for bleeding air, and in this embodiment, an air bleeding hole (not shown) is provided at an arbitrary position on one of the pair of panel members 2.
The air vent pipe 6 is attached to this hole and a vacuum pump or the like is connected to the air vent pipe 6 to operate the air vent pipe 6 so that the inside of the panel 1 can be evacuated. Specifically, in this embodiment, a copper pipe is used as the air vent pipe 6. After connecting a vacuum pump or the like to the pipe 6, first, heat is applied to the heat insulating panel to expand the air inside the panel. After that, the inside of the heat insulating pipe is evacuated by a vacuum pump or the like, the root portion of the pipe is squeezed and crushed, and then the heat insulating panel is cooled, whereby the inside of the heat insulating panel is brought to a high vacuum state.

Although not shown, a vacuum meter may be provided at any position of the panel material 2 and used to check the vacuum state in the heat insulating panel when the air inside the panel is evacuated.

As described above, in the heat insulating panel 1 of the present embodiment having such a structure, since the inside of the panel is hermetically sealed, a vacuum pump or the like is connected to the air vent pipe 6 so that the air inside the panel 1 is closed. The inside of the panel can be made to be in a vacuum state by sucking.

At this time, the heat insulating panel 1 of this embodiment is used.
Since the panel material 2 is hermetically connected by the airtight plate 4, the inside of the heat insulating panel 1 can be more effectively evacuated, and the airtight plate 4 has a thin plate shape. It is possible to minimize heat transfer through the plate.

Further, when the inside is evacuated, the pair of panel materials 2 are compressed toward the pins 301, respectively, whereby the heat insulating panel 1 becomes rigid and the panel itself becomes a structure. When it is used as a panel of a container or the like, it is not necessary to firmly fix it to the frame, so that the container can be assembled with a lightweight resin frame or the like.

As described above, in the heat insulating panel of this embodiment,
It is possible to effectively create a vacuum state inside the hollow panel with a built-in spacer. By using a vacuum inside the panel body during use, heat conduction inside the panel is suppressed, and the heat on the panel front surface is reduced. Since it can be effectively prevented from being conducted to, the temperature inside the container can be kept constant by using it as a panel material for a container or the like.

Further, since the entire panel can be rigidified into a structure by evacuating the inside of the panel body,
The thickness of the panel material can be reduced, the weight of the panel can be reduced, and the manufacturing cost can be kept low. Further, even when this is used as a panel of a container or the like, it is not necessary to firmly fix it to the frame, and therefore, a frame made of resin or the like can be easily assembled.

Next, an embodiment of the container of the present invention using the above-described heat insulating panel 1 will be described with reference to the drawings. FIG. 6 is a perspective view showing the container of this embodiment,
In the figure, 11 is a container of this embodiment. 2 is a cross-sectional view showing the structure of the container 1 of this embodiment from the plane side, and FIG. 3 is a container 11 of this embodiment.
It is sectional drawing which showed the structure of from the back side.

The container 11 of this embodiment is a so-called "rear panel" which is mounted on the cargo bed of a freight vehicle. As shown in the figure, the front panel 12 and a pair of side walls are provided. The panel 13 and the upper panel 14 are assembled in a substantially rectangular shape by the corner frame 16, and on the side facing the front panel 12,
The door panel 15 is openably and closably mounted via the end frame 17.

That is, in the figure, 12 is a front panel and 13 is a pair of side panels. In this embodiment,
By using the corner frame 16, the front panel 12 and the pair of side panels 13 are connected to each other in a substantially U-shape in a plan view with the front panel 12 on the right side (see FIG. 7). Further, end frames 7 are attached to the ends of the pair of side panels 13 facing the side connected to the front panel 12 and the lower ends of the pair of side panels 3.

An upper panel 14 is connected above the front panel 2 and the pair of side panels 3 by a corner frame 16 as shown in FIG.

6 and 7, reference numeral 15 is a door panel mounted on the side facing the front panel 2 so as to be openable and closable. In this embodiment, the door panel 15 is shown.
Is connected to an end frame 17 attached to one end of the pair of side panels 13 via a hinge 18 such as a hinge.

In the container of this embodiment, the front panel 12, the pair of side panels 13, and the upper panel 14 are all formed by the heat insulating panel 1 described above.

As described above, since the container of the present embodiment uses the above-mentioned heat insulating panel as a panel constituting the container, the heat insulating panel is evacuated during use to conduct heat to the inside of the container. The temperature inside the container can be maintained constant.

Here, FIG. 11 is a cross-sectional view for explaining the structure of the corner frame 16, and the corner frame 16 in this embodiment is made of polycarbonate, as shown in the figure. In addition, the side surface is an elongated object having a substantially L shape, and long grooves 1601 and 1602 into which the ends of the panel can be inserted and fixed are formed at both ends in the longitudinal direction, and the outer periphery thereof is made of metal. Thin plates 1603 and 1604 are provided. The end frame 17 is also an elongated member made of polycarbonate, and has a structure having a panel insertion groove along the longitudinal direction (not shown) (see FIGS. 7 and 8).

As described above, the container 11 in this embodiment is a container that is mounted on the cargo bed of a freight vehicle, and therefore does not have a floor panel and the floor surface of the freight vehicle's cargo floor is used as a floor panel. This is a dual-purpose form.

In the above description, the end frame 17 is attached to the bottom end of the pair of side panels 13, but the pair of side panels 1 is not always necessary.
It is not necessary to attach the end frame 17 to the lower end of 3.

Next, FIG. 9 is a sectional view showing the structure of another embodiment 21 of the container of the present invention from the rear side in the same direction as FIG. 8. The container 21 of this embodiment is also shown in the drawing. As described above, the container 11 of the above-described embodiment is further provided with the floor panel 22. As a result, unlike the container that is mounted on the bed of a freight car as described above, the container itself can be moved while maintaining its form, and not only transportation by car, but also ships, aircraft, etc. It can also be used for freight transportation in.

That is, in the container 21 of this embodiment, the front panel (not shown), the pair of side panels 13, the upper panel 14, and the floor panel 22 are formed into a substantially rectangular shape by the corner frame 16. While assembling, on the side facing the front panel, through the end frame,
The front panel, the pair of side panels 13, the upper panel, and optionally the floor panel 13 and the door panel are formed by the heat insulating panel of the present invention.

Therefore, in the same manner as the above-mentioned container embodiment, the heat conduction to the inside of the container can be suppressed by making the inside of the heat insulation panel a vacuum state during use.
It is possible to keep the temperature inside the container constant.

The container 21 in this embodiment is
This is a mode in which the bottom panel 22 is further added to the container 11 of the above-mentioned embodiment, and other configurations and effects are the same as those of the above-mentioned embodiment, so duplicated description will be omitted and the same reference numerals will be given to the same parts. Attached.

In the above-mentioned embodiment and this embodiment, the case where the pair of side panels and the upper panel are both one has been described, but the present invention is not necessarily limited to such a form. In the case of a large-sized container, as shown in FIG. 10, a plurality of pairs of side panels and upper panels are used, and the connecting means 2 is used.
3, and a door or the like that can be opened and closed as appropriate may be provided on both or one of the pair of side panels. As the connecting means 23 in such a case, for example, as shown in FIG. 12, an elongated frame having panel insertion grooves 2301 at both ends in the longitudinal direction and a metal thin plate 2302 on the surface thereof is used. In this case, the frame 23 may be made of polycarbonate.

[0052]

The heat insulating panel of the present invention and the container using the same are embodied in the form described above, and have the following effects.

In the heat insulating panel of the present invention, the entire peripheral portions of the pair of panel materials arranged so as to oppose each other via the spacer are airtightly connected by the airtight plate, whereby the air inside the panel is evacuated. Since the inside of the panel can be evacuated, the inside of the panel can be evacuated during use to suppress heat conduction inside the panel and effectively transfer the temperature of the panel surface to the back surface of the panel. It is possible to prevent.

Further, since the spacer is arranged in the panel body, even if the panel body is evacuated,
It is possible to prevent the pair of panel materials from being combined with each other, and since the pair of panel materials are compressed by the spacer with a strong pressure, the panel itself becomes a rigid body and becomes a structure. When it is used as a panel of a container, even if a thin panel material is used, it is not necessary to fix the panel material with a strong frame.

Further, since the pair of panel materials are airtightly connected to each other by using the thin airtight plate, it is possible to more effectively bring the inside of the panel into a vacuum state, and the airtight plate is interposed. It is possible to minimize the conducted heat transfer.

In the container of the present invention, since the heat insulating panel thus constructed is used, the temperature inside the container can be kept constant.

[Brief description of drawings]

FIG. 1 is a diagram for explaining the structure of an embodiment of a heat insulating panel of the present invention.

FIG. 2 is an exploded view for explaining the structure of the embodiment of the heat insulation panel of the present invention.

FIG. 3 is a perspective view of an embodiment of the heat insulation panel of the present invention.

FIG. 4 is a view for explaining the structure of another embodiment of the heat insulating panel of the present invention.

FIG. 5 is a view for explaining another embodiment of the spacer in the heat insulation panel of the present invention.

FIG. 6 is a perspective view showing a first embodiment of the container of the present invention.

FIG. 7 is a view showing the structure of the first embodiment of the container of the present invention from the plane side.

FIG. 8 is a view showing the structure of the first embodiment of the container of the present invention from the rear side.

FIG. 9 is a view showing the structure of the second embodiment of the container of the present invention from the rear side.

FIG. 10 is a perspective view showing another form of the container of the present invention.

FIG. 11 is a diagram for explaining a corner frame.

FIG. 12 is a diagram for explaining a connecting unit.

[Explanation of symbols]

1 Insulation panel 2 panel materials 3 spacers 301 pin 302 Support material 4 Airtight plate 5 Mall material 6 Air venting means 11, 21 containers 12 front panel 13 side panels 14 Upper panel 15 door panel 16 corner frame 1601, 1602 Panel insertion groove 1603, 1604 Metal thin plate 17 Edge frame 18 hinge 22 floor panels 23 Connection means 2301 Panel insertion groove 2302 Metal thin plate

Claims (3)

[Claims] 1. A support member (30) having a plurality of pins (301).
2), a spacer (3) configured by connecting with each other, a pair of plate-shaped panel materials (2) arranged so as to face each other with the spacer (3) interposed therebetween, and the pair of panel materials ( An elongated airtight plate (4) made of a thin metal plate in which 2) is airtightly connected to the entire periphery thereof.
A heat insulating panel comprising an air venting means (6) provided at an arbitrary position of the panel material (2) or the airtight plate (4), wherein internal air is blown through the air venting means (6). A heat-insulating panel characterized by making it possible to create a vacuum inside by suctioning. 2. A front panel (12), a pair of side panels (13), and an upper panel (14) are assembled in a substantially rectangular shape using a connecting frame (16), and the front panel (12) is also assembled. ) Door panel (1
In a container in which 5) is openably and closably attached, at least one of the front panel (12), a pair of side panels (13) and an upper panel (14) is the heat insulation panel according to claim 1. Characterized container. 3. A front panel (12), a pair of side panels (13), an upper panel (14) and a floor panel (22).
And a door frame (15) attached to the side opposite to the front panel (12) so as to be openable and closable, and at least the front panel (12). A container characterized in that any one of a pair of side panels (13) and an upper panel (14) is the heat insulation panel according to claim 1.