JP2003147872A - Metallic high-vacuum heat insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating panel which is light in weight, high in strength, and capable of minimizing heat conduction in the panel. SOLUTION: The high-vacuum heat insulating panel includes holding plates (4) each formed of a metallic plate, a pair of metallic main plates (2), slender metallic airtight plates (3), and an air vent means (6). The main plates (2) are opposed to each other in a manner abutting on edges of the holding plates (4). The metallic airtight plates (3) hermetically connect the main plates (2) together over the entire peripheral portions of the main plates. The air vent means (6) is arranged on the main plate (4) or the airtight plate (3) at an arbitrary location to suck air inside the heat insulating panel via the air bent means (6), which leads to a vacuum state of the interior of the heat insulating panel. According to the heat insulating panel, each of the holding plates (4) and the airtight plates (3) is formed of a rolled metallic thin sheet having a thickness of 0.3 mm or less.

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 used for various products, and more particularly, to a pair of metal main plates and an extremely thin metal plate interposed between the pair of main plates. The holding plate to be formed and the pair of main plates are provided with an airtight plate made of a metal ultra-thin plate that is airtightly connected at the peripheral edge portion thereof, which makes it possible to make the inside into a vacuum state and enhance the heat insulating effect. Metal high vacuum insulation panel.

[0002]

2. Description of the Related Art Conventionally, a heat insulating panel has been used in various fields, and for example, the heat insulating panel may be used for a wall of a container or a building. This makes it possible to keep the heat inside the container and inside the building.

The conventionally provided heat insulating panel will be described here. Generally, the conventionally provided heat insulating panel uses two panel materials, and urethane or the like is provided between the two panel materials. This is filled with a heat insulating material or the like, which prevents heat conduction from the front surface of the panel to the back surface or from the back surface of the panel to the front surface, that is, inside the panel. Therefore, an effective heat insulating effect can be expected by manufacturing a container using this heat insulating panel or by using this heat insulating panel on the outer wall of a building, as compared with the case where only one panel material is used.

[0004]

However, since the heat insulation panel provided conventionally has a structure in which the heat insulation material is filled between the two panel materials as described above,
A heat insulating effect can be expected when compared to a panel composed of one panel material, but heat is conducted through the heat insulating material, so this is used to manufacture containers or use this heat insulating panel. Even when used as an outer wall of a building, there was a limit to heat insulation inside the container or inside the building.

Further, as described above, in the conventionally provided heat insulating panel, since the heat insulating material is filled in the inside thereof, the weight is increased by this, while the weight of the panel material is reduced in order to reduce the weight. It has been pointed out that if the thickness is reduced, the strength of the entire panel is reduced.

Therefore, according to the present invention, it is possible to suppress the conduction of heat in the panel to a minimum, and at the same time, it is lightweight.
It is an object to provide a heat insulating panel having high strength.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a holding plate made of a metal plate and a pair of plate-shaped metal members arranged so as to oppose each other so that their surfaces come into contact with the ends of the holding plate. A main plate made of metal, an elongated metal airtight plate in which the pair of main plates are airtightly connected in the entire peripheral portion thereof, and an air venting means provided at the main plate or at an arbitrary position of the airtight plate. A high-vacuum heat insulation panel capable of bringing the inside into a vacuum state by sucking the inside air through the air venting means, wherein the holding plate and the airtight plate are manufactured by rolling meat. 0.3m thick
The metal high vacuum insulation panel is characterized by being formed of a metal thin plate of m or less.

In the present invention, the pair of main plates are airtightly connected to each other at their peripheral portions by using the airtight plate, which makes it possible to create a high vacuum inside the panel, thereby effectively conducting heat inside the panel. It is possible to suppress.

At this time, in the present invention, since the holding plate is used and the pair of main plates are arranged to face each other so that the respective surfaces of the holding plate come into contact with each other, the inside of the panel body is The pair of main plates can be prevented from fitting together even in a vacuum state, and since the pair of main plates are compressed with a strong pressure through the holding plate, the panel itself becomes rigid and strong. You can

Further, in the present invention, since the airtight plate and the holding plate are formed by an ultrathin plate having a wall thickness of 0.3 mm or less manufactured by rolling, heat is conducted through the airtight plate and the holding plate. Can be suppressed.

That is, in general, when a metal is rolled into an ultrathin plate having a wall thickness of about 0.3 to 0.1 mm, tissue dissociation occurs, whereby heat conduction resistance is generated and heat in the plane direction is generated. It is known that the conductivity becomes extremely low. This thermal conductivity resistivity is about 0.0027 w / mk, which is said to be 6 times or more that of the above-mentioned urethane.

Therefore, the wall thickness produced by rolling is 0.3.
In the present invention in which an ultra-thin plate of mm or less is used to connect a pair of main plates and is also used as a spacer between the pair of main plates, the heat of one main plate is passed through an airtight plate or a holding plate. Can be effectively suppressed from conducting to the other main plate.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the metallic high-vacuum heat insulation panel of the present invention, each surface is brought into contact with an end portion of a holding plate made of a metal ultrathin plate having a wall thickness of 0.3 mm or less. , A pair of plate-shaped metal main plates are arranged in opposition to each other, and a wall thickness of 0.
An elongated metal airtight plate of 3 mm or less connects the pair of main plates airtightly at their peripheral portions.

An air bleeding device is provided at an arbitrary position on the main plate, and the inside of the panel can be evacuated through the air bleeding device.

Here, the main plate, the airtight plate and the holding plate are preferably made of stainless steel, whereby the thermal conductivity can be suppressed more effectively.

Further, the holding plate may be deformed so that a plurality of circles or polygons are formed by the end portions with which the main plate abuts, so that the holding plate is crushed when the inside of the panel is evacuated. It is possible to make a stronger heat insulating panel.

Further, it is preferable to form air holes at any position of the holding plate, so that the main plate 1
It is possible to remove all the air inside the panel by forming the air bleeding means only at the location.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a metal high vacuum heat insulation panel (hereinafter simply referred to as "heat insulation panel") of the present invention will be described with reference to the drawings. FIG. 1 shows the structure of the heat insulation panel of this embodiment from the side. 2 is a partially omitted exploded view showing a state in which the heat insulating panel of the present embodiment is disassembled.

In the figure, reference numeral 1 is a heat insulating panel of this embodiment, and this heat insulating panel 1 is provided with a pair of main plates 2 made of stainless steel thin plates. Specifically, in this embodiment, a stainless steel plate having a thickness of about 0.4 mm is used as the main plate 2.

A holding plate 4 is interposed between the pair of main plates 2. That is, reference numeral 4 in FIG. 2 is a holding plate, and in this embodiment, the holding plate 4 is made of a stainless steel ultrathin plate having a thickness of 0.3 mm or less manufactured by rolling into an endless ring-shaped product 4.
It is configured by arranging a number of 01 (see FIG. 3) adjacent to each other.

Then, as shown in FIG. 1, each ring 40
The pair of main plates 2 are arranged opposite to each other so that the respective surfaces of the pair of main plates 2 are in contact with both ends along the circumferential direction of 1. In addition, in this embodiment, the thickness of the ultrathin plate constituting the ring 401 is about 0.1 mm, and the ring 401 has a diameter of about 100 mm and a height of about 30 mm.

Next, in the figure, 3 is an airtight plate, and in the present embodiment, this airtight plate 3 has a wall thickness of 0.3 mm manufactured by rolling, like the holding plate.
It is composed of the following slender stainless steel thin plates.

Further, in this embodiment, the elongated stainless ultra-thin plate is formed into a substantially concave shape in the visual field in the longitudinal direction, and the pair of main plates are arranged in such a manner that the concave opening faces outward. The main plate 2 is fitted into the peripheral edge of the main plate 2 and is fixed to the peripheral edge of the main plate 2, whereby the pair of main plates 2 are hermetically connected at the peripheral edge. In the present embodiment, the airtight plate 3 is welded, specifically, by TIG welding or DC shim welding, to the main plate 2.
Is stuck to. The thickness of the ultrathin plate that constitutes the airtight plate 4 is about 0.2 mm. As described above, the airtight plate 4 in this embodiment connects the main plate 2 in the entire peripheral portion, but is arranged above and below the holding plate 4 in the exploded view of FIG. Only the airtight plate 3 is shown, and other holding plates are omitted.

Next, in the figure, 6 is a pipe stopper for bleeding air, that is, in this embodiment, a copper stopper 6 is attached to any one of the pair of main plates 2 and the copper stopper 6 is used. The inside of the heat insulating panel 1 can be evacuated by evacuating the air inside the heat insulating panel 1.

In FIG. 1, reference numeral 5 is a getter alloy. In this embodiment, a getter alloy 5 is provided inside the heat insulation panel 1 so that the gas generated by the main plate 2, the holding plate 4 and the like is generated by this getter alloy. It is made to absorb, and thereby the vacuum degree inside the panel is increased.

In FIGS. 1 and 3, reference numeral 402 denotes a punch hole. In this embodiment, by forming the punch hole 402 in each of the rings 401, the air inside is sucked from one place of the heat insulating panel 1. Only by doing so, the inside of the heat insulating panel 1 can be evacuated.

Next, a method of evacuating the heat insulating panel 1 of the present embodiment configured as described above will be described. First, the heat insulating panel 1 of the present embodiment is put into a heating furnace and the copper wire 6 is vacuumed. After connecting the pump, the heat insulating panel 1 of the present embodiment is heated at about 350 degrees for about 1 hour to burn and evaporate oil contained in stainless steel or the like constituting the main plate.

After that, the inside of the heat insulating panel 1 is evacuated by using a vacuum pump to bring the inside into a vacuum state, and then the tip portion of the copper stopper 6 is crushed, whereby the high vacuum heat insulating panel of this embodiment is completed. To do.

Then, since the hollow portion inside the heat insulating panel is evacuated, heat conduction inside the heat insulating panel 1 is suppressed, and the heat insulating panel 1 is used to manufacture a container or to construct the heat insulating panel 1 in a building. When used as an outer wall or the like, it is possible to more effectively keep the heat inside the container or the building.

Further, the airtight plate 3 and the holding plate are formed by using an ultrathin plate made of stainless steel in which the thickness is 0.3 mm or less by rolling to cause the dissociation of the tissue, and thereby the heat conduction in the plane direction is extremely deteriorated. Because of the configuration of 4, the heat conduction through the airtight plate 3 or the holding plate 4 can be effectively prevented.

The holding plate 4 in the above-mentioned embodiment is a case in which a large number of elongated thin stainless steel plates having an arbitrary width are made endless to form a ring 401, which are arranged next to each other. However, in the present invention, it suffices that each surface of the main plate 2 is in contact with the end portion of the holding plate, and the form of the holding plate is not particularly limited, and other forms may be used. For example, FIG. 4 is a view showing a holding plate 7 of another form. In the holding plate 7 shown in the drawing, an elongated stainless ultrathin plate having a wall thickness of 0.3 mm or less manufactured by rolling is used in the longitudinal direction. The holding plate is formed by bending it so that a polygonal shape is formed at the end portion along with, and a plurality of the bent stainless ultra-thin plates are arranged next to each other to form a holding plate. You may comprise the heat insulation panel of this invention.

Further, in the above-described embodiment, the case where the main plate 2, the airtight plate 3 and the holding plate 4 are made of stainless steel has been described, but the present invention is not necessarily limited to stainless steel, and any material can be used as long as it is a metal. May be used.

[0033]

The metal high-vacuum heat insulation panel of the present invention is embodied in the form as described above, and has the following effects.

The metal high-vacuum heat insulation panel of the present invention comprises a holding plate made of a metal plate, and a pair of plate-like members arranged so as to face each other so that their surfaces come into contact with the ends of the holding plate. A metal main plate, an elongated metal airtight plate in which the pair of main plates are airtightly connected over the entire peripheral portion thereof, and an air venting means provided at the main plate or at any position of the airtight plate. A metal high-vacuum insulation panel, which is capable of bringing the inside into a vacuum state by sucking the air inside through the air venting means, wherein the holding plate and the airtight plate are formed by rolling. It is characterized by being formed of a thin metal plate having a wall thickness of 0.3 mm or less.

As described above, according to the present invention, the pair of main plates are airtightly connected to each other at their peripheral portions by using the airtight plate, so that the inside of the panel can be made to have a high vacuum. Therefore, it is possible to effectively suppress heat conduction through the inside of the panel.

At this time, in the present invention, since the holding plate is used and the pair of main plates are arranged to face each other so that the respective surfaces of the holding plate come into contact with each other, the inside of the panel body is It is possible to prevent the pair of main plates from fitting together even in a vacuum state, and since the pair of main plates compresses with a strong pressure through the holding plate, the panel itself becomes rigid and strong. You can

Further, in the present invention, it is possible to obtain a value of 0.
Since the airtight plate and the holding plate are formed by using an ultrathin plate made of stainless steel in which the tissue dissociation occurs and the thermal conductivity is extremely deteriorated when the thickness is 3 mm or less, the heat generated through the airtight plate and the holding plate is It can suppress conduction.

[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 a partially omitted exploded view for explaining the structure of the embodiment of the heat insulating panel of the present invention.

FIG. 3 is a view for explaining a ring that constitutes a holding plate used in an embodiment of the heat insulation panel of the present invention.

FIG. 4 is a view for explaining another form of the holding plate used in the embodiment of the heat insulating panel of the present invention.

[Explanation of symbols]

1 Insulation panel 2 Main plate 3 Airtight plate 4, 7 holding plate 401 ring 402 punch hole 5 getter alloy 6 Air venting means

Claims (5)

[Claims] 1. A holding plate (4) made of a metal plate, and a pair of plate-shaped metal main members arranged so as to face each other so that respective surfaces of the holding plate (4) come into contact with the ends of the holding plate (4). An elongated metal airtight plate (3) in which the plate (2) and the pair of main plates (2) are airtightly connected to each other over the entire peripheral portion thereof.
And an air venting means (6) provided at any location of the main plate (2) or the airtight plate (4), and by sucking the internal air through the air venting means (6) A high-vacuum heat insulation panel capable of forming a vacuum inside, the holding plate (4) and the airtight plate (3)
Is formed by a thin metal plate having a wall thickness of 0.3 mm or less manufactured by rolling. 2. The holding plate (4) according to claim 1, wherein the holding plate (4) is deformed so that a plurality of circles are formed by an end portion with which the main plate (2) abuts. High vacuum insulation panel made of metal. 3. The holding plate (4) is deformed so that a plurality of polygons are formed by the end portions with which the main plate (2) abuts.
High vacuum insulation panel made of metal according to. 4. The metal high vacuum heat insulation panel according to claim 1, wherein an air hole (402) is formed at an arbitrary position of the holding plate (4). 5. The metal according to claim 1, wherein each of the main plate (2), the airtight plate (3) and the holding plate (4) is made of stainless steel. High vacuum insulation panel.