JPH09113120A - Heat insulating panel having duct part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower manufacturing costs with better appearance of a heat insulating panel by minimizing the total weight of the panel itself containing a duct part to achieve a lighter weight, higher workability while increasing productivity in the heat insulating panel containing the duct part in the heat insulating panel which has the duct part to be used for a prefabricated type heat reserving storage, a refrigerator, a clean room or the like. SOLUTION: A heat insulating panel 5 is provided with broad front and rear wall members 11 and 12, right and left frame members 15 and 16 and a lower frame member and right and left wall members 13 and 14 and a lower wall member. All the frame materials and the wall members are combined and heat insulating materials 36 and 36 made of a foam synthetic resin are injected and foamed to fill a left space part 34 between the left frame member 15 and the left wall member 13, a right space part 35 between the right frame member 16 and the right wall member 13 and a lower side space part between the lower frame member and the lower wall member thereby forming a dust part 10. Thus, the front wall member 11 is provided with an opening part to make the duct part 10 communicate with the inside of the storage.

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 having a duct portion used in, for example, a prefabricated heat insulation box, a refrigerator, a clean room and the like.

[0002]

2. Description of the Related Art Conventionally, for example, in a prefabricated heat-retaining cabinet, in the case where hot air or cold air is blown out from a predetermined wall position in the cabinet, a heat insulating panel is provided in order to simplify the assembly work of the heat-retaining cabinet and the duct installation work. The panel construction method that the duct is embedded inside is adopted.

Since this panel requires a heat insulating layer on the inside and the outside of the refrigerator, the panel has a structure in which the heat insulating layer surrounds the duct.

Conventionally, several methods have been proposed for manufacturing such a panel, in which a duct is directly buried inside the panel and a polyurethane foam (urethane foam) is injected and foamed around the duct. Method,
A method of embedding the duct directly inside the panel and attaching a heat insulating material (urethane slab) to three layers can be mentioned.

[0005]

However, since a duct having a large weight is buried by any of the above-mentioned methods, the total weight of the heat insulating panel itself becomes large, and there is a problem that it is difficult to assemble and construct it on site. It was Further, in particular, in the above method, there is a problem that the traces of the duct supporting member are transferred to the surface of the panel and the appearance is deteriorated because it is necessary to inject and foam the duct in a floating state inside the panel. Further, in the above method, the urethane slab in the vicinity of the frame material needs to be processed into a shape along the frame material, and there is a problem that the processing is complicated, the manufacturing is not easy, and the productivity is poor.

An object of the present invention is to solve the above-mentioned problems of the prior art, to minimize the total weight of the heat insulating panel itself having the duct portion built therein, to achieve weight reduction, and to improve workability. At the same time, the productivity can be increased, the manufacturing cost can be reduced, and there is no concern that the traces of the duct support member are transferred to the surface of the panel as in the conventional case, and the appearance is very beautiful. An object of the present invention is to provide a heat insulating panel having a duct part.

[0007]

In order to achieve the above object, the present invention provides a heat insulating panel having a duct portion according to the first aspect of the present invention, wherein a wide front and rear wall member and a front and rear wall member facing each other are provided. Of the left and right frame members, which are fixed to the left and right edge parts of the front and rear wall members, and the lower frame member, which is fixed to the lower edge parts of the front and rear wall members, of the left and right frame members. Front and rear wall members that are disposed and are interposed between the front and rear wall members, and lower wall members that are disposed inside the lower frame member at a predetermined interval and that are interposed between the front and rear wall members, The wall members each consist of a front surface metal plate, a heat insulating board joined to the inner surface thereof, and a back surface metal plate that covers the heat insulating material board from the inside. Surface U-shaped metal plate and its groove The lower wall member is composed of a metal plate having a substantially U-shaped cross section that opens downward, and a heat insulating board that is housed in a groove in the left frame. Member and left wall member, and in the left side space formed inside the left side edge portion of the front and rear wall members in the middle thereof, a heat insulating material made of foamed synthetic resin is filled by injection foaming, and a right frame member and The right wall member, and in the right space portion formed inside the right edge portion of the front and rear wall members in the middle thereof, a heat insulating material made of foamed synthetic resin is filled by injection foaming, a lower frame member and a lower wall member, And, in the lower space portion formed inside the lower end portion of the front and rear wall members in the middle thereof, a heat insulating material made of a foamed synthetic resin is filled by injection foaming, and the left and right wall members and the lower wall member and the inside The front and rear wall members and It is characterized in that the opening for communicating the interior of the heat insulation box, such as a duct unit to the required location of the opened and the duct section is formed, the front wall member is provided.

Next, a heat insulating panel having a duct portion according to a second aspect of the present invention is a lower wall member and a lower frame member at the bottom of the duct portion of the heat insulating panel according to the first aspect of the invention, and a lower portion in the middle therebetween. With the foam insulation is omitted,
It has a duct part that is open at both ends. Such a heat-insulating panel is used as an intermediate panel that constitutes a side wall panel or a ceiling panel having a large area in, for example, a heat-retaining cabinet.

That is, in the heat insulation panel having the duct portion according to the second aspect of the present invention, the wide front and rear wall members facing each other, and the left and right frames fixed to the left and right edge portions of the front and rear wall members are secured to each other. A member and left and right wall members that are arranged inside the left and right frame members at a predetermined interval and are interposed between the front and rear wall members; The same as the case of the heat insulation panel according to the invention described in 1, the left frame member and the left wall member,
And, in the left space portion formed inside the left side edge portion of the front and rear wall members in the middle thereof, a heat insulating material made of foamed synthetic resin is filled by injection foaming, and the right frame member and the right wall member, and these In the right space portion formed inside the right side edge portion of the middle front and rear wall members, a heat insulating material made of foamed synthetic resin is filled by injection foaming, and left and right wall members,
It is characterized in that a duct portion whose both ends are opened is formed by the front and rear wall member portions inside of these.

In the above heat insulating panel, the front and rear wall members, the left and right wall members and the lower wall member are made of aluminum plates (metal plates having a front surface metal plate, a back surface metal plate and a substantially U-shaped cross section). A metal plate such as an aluminum alloy plate), a stainless steel plate, or a synthetic resin-coated steel plate is used. It should be noted that it is desirable to use a metal plate having corrosion resistance especially for the back side metal plate and the metal plate having a substantially U-shaped cross section for forming the duct portion inside the heat insulation panel. A metal foil may be used as the shaped metal plate.

The heat insulating board which is a constituent member of the front and rear wall members, the left and right wall members, and the lower wall member is made of foamed polyurethane resin or foamed phenol resin.
These are manufactured in advance in a factory or the like, and have a predetermined size and thickness.

Further, as the left and right frame members and the lower frame member,
Molded articles made of synthetic resin such as polyvinyl chloride, polycarbonate, calcium carbonate-containing polypropylene, fluororesin and polyamide are used.

Further, a foamable polyurethane resin, a foamable phenolic resin, or the like is used as the heat insulating material made of foamed synthetic resin filled in the left and right spaces and the lower space by injection foaming.

[0014]

Embodiments of the present invention will now be described with reference to the drawings.

In this specification, front and rear, left and right are based on FIG. 1, the front is the lower side of FIG. 1, the rear is the upper side thereof, the left is the left side of the figure, and the right is the same right side. Shall be said.

1 to 3, the first aspect of the present invention is described.
Insulation panel (5) with duct part (10) according to the described invention
Is a wide front and rear wall members (11) and (12) facing each other, and a synthetic resin such as polyvinyl chloride resin that is held between the left and right edges of the front and rear wall members (11) and (12). Left and right frame members (15) and (16) made of synthetic resin, the lower frame member (17) made of the same synthetic resin that is fixed to the lower edges of the front and rear wall members (11) and (12), and the left and right frame members ( 15) Left and right wall members that are arranged at a predetermined distance from the inside of (16) and are interposed between the front and rear wall members (11) and (12)
(13) (14) and a lower wall member (18) disposed at a predetermined interval inside the lower frame member (17) and interposed between the front and rear wall members (11) and (12) ing.

The front and rear wall members (11) and (12) are respectively joined to a surface metal plate (21) made of an aluminum plate or the like and an inner surface of the surface metal plate (21) via an appropriate adhesive such as an epoxy resin adhesive. Insulation board (23) made of expanded polyurethane resin, etc.,
A back metal plate (2) made of a stainless steel plate or the like, which is joined so as to cover the heat insulation board (23) from the inside and through the adhesive.
2), the left and right wall members (13) and (14) are each a metal plate (31) having a substantially U-shaped cross section and made of a stainless steel plate and the like, and a groove (32) for this. The lower wall member (18) is made of a stainless steel plate or the like having a substantially U-shaped cross section and is opened downward. It is composed of a plate (41) and a heat insulating material board (43) housed in the concave groove (42) of the plate (41) and joined together by the adhesive.

As shown in the exploded view of FIG. 2, when manufacturing the heat insulating panel (5) having the duct portion (10) according to the present invention, the front and rear wall members (11) and (12) and the left and right wall members ( The wall members (11), (12), (13), (14), (18), and the left and right frame members (15)
(16) and the lower frame member (17) are combined.

At this time, first, the left and right frame members (15), (16) and the lower side edges of the front surface metal plates (21, 21) of the front and rear wall members (11, 12), respectively. The lower frame member (17) is stopped, and then the front and rear wall members (11) and (12) are placed between the left and right wall members.
(13) (14) are arranged inside the left and right frame members (15) and (16) at a predetermined interval, and the rear metal plates (2) of the front and rear wall members (11) and (12) are
2) The outer surface of the metal plates (31) and (31) of the left and right wall members (13) and (14) having a substantially U-shaped cross section is joined to the inner surface of (22) through an epoxy resin adhesive or the like, and The wall members (18) are arranged inside the lower frame member (17) at a predetermined interval, and the front and rear wall members (11) (12)
The outer surface of the metal plate (41) having a substantially U-shaped cross section of the lower wall member (18) is joined to the inner surfaces of the rear surface metal plates (22) and (22) through the same adhesive.

Then, the left frame member (15) and the left wall member (13),
And inside of the left and right wall members (11) and (12) inside the left space portion (34) formed inside the left edge portion, and the right frame member (16) and the right wall member (13), and these. Insulation materials (36) made of polyurethane foam resin, etc. are filled by injection foaming in the right side space (35) formed inside the right side edges of the front and rear wall members (11) (12) in the middle. In addition, the lower frame member (17) and the lower wall member (18), and the intermediate space between the front and rear wall members (11) and (12) inside the lower space portion (44) formed near the lower ends of the members. Similarly, a heat insulating material (46) made of foamed polyurethane resin or the like is filled by injection foaming, and the left and right wall members (13) (1
4) and lower wall member (18) and front and rear wall members inside of these
The duct portion (10) opening upward is formed by the portions (11) and (12).

By the injection and foaming, the heat insulating material made of foam such as polyurethane resin is firmly bonded to the frame member and the wall member by so-called self-adhesion, so that no peeling occurs. The strength is also sufficiently high.

Finally, a heat insulating panel having a duct part (10)
An opening (24) for communicating the duct (10) with a room such as a heat-retaining compartment is provided at a portion near the lower end of the front wall member (11) of (5).

The upper wall portion (41b) of the metal plate (41) having a substantially U-shaped cross section of the lower wall member (18) constituting the bottom surface of the opening (24).
Is inclined downward toward the inside of the refrigerator so that the air can easily be blown into it.

[0024]

Next, an embodiment of the present invention will be described with reference to the drawings.

In the embodiment, the heat insulating panel having the duct portion according to the present invention is used as the side wall panel of the prefabricated heat insulation box.
It shows the case applied to (2).

First, referring to FIG. 4, the prefabricated heat storage box (1)
The side wall panels (2), ceiling panels (3) and floor panels
It is combined with (4) and installed on the site (G) of a factory or the like. Then, in order to blow out warm air or cold air into the refrigerator from the ventilation opening provided in the lower end portion of the side wall panel (2), the heat insulating panel (5) having the duct portion (10) according to the present invention is provided with the side wall panel ( It is used for the part where the ventilation port of 2) should be provided.

1 and 2, a heat insulating panel (5) having a duct portion (10) according to the present invention has wide front and rear wall members (11) and (12) facing each other and front and rear wall members (11) (11). Left and right frame members (15) (16) made of polyvinyl chloride resin that are held between the left side edges and the right side edges of 12) and the lower edges of the front and rear wall members (11) (12) And the left and right frame members (1), which are made of the same polyvinyl chloride resin and are secured to each other.
5) Left and right wall members (13) (14) that are arranged at a predetermined distance from the inside of (16) and are interposed between the front and rear wall members (11) (12)
And a lower wall member disposed inside the lower frame member (17) at a predetermined interval and interposed between the front and rear wall members (11) and (12).
(18) and are provided.

Here, the front and rear wall members (11) and (12) are respectively made of an aluminum surface plate (21) having a thickness of 1.0 mm and a thickness of 1 which is bonded to the inner surface of the aluminum surface plate (21) through an epoxy resin adhesive.
Insulation board (urethane slab) (23) made of expanded polyurethane resin of 0.0 mm, and 0.8 mm thick stainless steel joined so as to cover the insulation board (23) from the inside and through the adhesive. It is made up of a back plate (22) made of material.

The heat insulating board (23) and the stainless steel back plate (22) are made smaller than the aluminum surface plate (21), and the left and right side edges of the aluminum surface plate (21) are formed. The parts (21a) (21b) and the lower edge part (21c) are joined to the aluminum surface plate (21) part inside these, leaving a frame member attachment part of a required width.

The left and right wall members (13) and (14) respectively have outwardly open stainless steel plates (31) and (31) with a thickness of 0.8 mm and a substantially U-shaped cross section, and the groove ( 32) The heat insulation board (urethane slab) (33) (33) made of polyurethane foam having a thickness of 88.0 mm, which is housed in the inside and joined via the adhesive, has a cross section of approximately U Both side walls (31a) (31a) of the shaped stainless steel plate (31) have a width larger than that of the heat insulating material board (33).

Further, the lower wall member (18) is housed in the concave groove (42) of the stainless steel plate (41) having a substantially 0.8-mm cross section and having a thickness of 0.8 mm, which is opened downward. It is composed of a heat insulation board (urethane slab) (43) made of expanded polyurethane resin having a thickness of 88.0 mm, which is joined via an adhesive. Similarly, a stainless steel plate having a substantially U-shaped cross section.
Both side walls (41a) (41a) of the (41) are made wider than the width of the heat insulating material board (43).

2 and 3, the front and rear wall members (11) (1) of the heat insulation panel (5) constituting the side wall panel (2) of the heat insulation cabinet (1).
2), the left and right wall members (13) (14), and the lower wall member (18) are prefabricated, and these wall members (11) (1)
2), (13), (14) and (18) are combined with the concavo-convex left and right frame members (15) and (16) and the downward convex convex lower frame member (17).

At this time, the left and right side edge portions (21a) (21b) of the aluminum front surface plates (21) (21) of the front and rear wall members (11) (12) are folded back to form the uneven left and right frame members (15). ) (16) is fastened to both the front and rear edges, and the lower edges (21c) of the surface plates (21) and (21) are folded back, so that the front and rear edges of the convex lower frame member (17) are It is held by the department.

Then, between the front and rear wall members (11) and (12),
The left and right wall members (13) and (14) are arranged at predetermined intervals inside the left and right frame members (15) and (16) having irregularities, and the front and rear wall members (11) (1
The inner surface of the stainless steel back plate (22) (22) of 2) is the epoxy resin adhesive on the outer surface of the left and right wall members (13) (14) with a substantially U-shaped cross section. And the lower wall member (18) is disposed inside the convex lower frame member (17) at a predetermined interval, and the front and rear wall members (11) and (12) are made of stainless steel. The outer surface of the stainless steel plate (41) having a substantially U-shaped cross section of the lower wall member (18) is joined to the inner surfaces of the face plates (22) and (22) through the same adhesive.

Whichever of the mounting work of the frame members (15) (16) (17) and the mounting work of the wall members (11) (12) (13) (14) (18) is carried out first. You can do it, or you can do it in parallel.

Then, the convex left frame member (15) and the left wall member
(13), and the inside of the left side space (34) formed inside the left side edge portion of the front and rear wall members (11) and (12) in between, and the concave right frame member (16) and right wall member (13), and the intermediate space between the front and rear wall members (11) and (12), inside the right space portion (35) formed inside the right edge portion, a heat insulating material (36) made of foamed polyurethane resin, respectively. Filled by injection foaming,
Also, inside the lower space portion (44) formed inside the convex lower frame member (17) and the lower wall member (18), and the lower end portion of the front and rear wall members (11) and (12) intermediate between these Similarly, a heat insulating material (46) made of foamed polyurethane resin is filled by injection foaming,
A heat insulation panel (5) is formed, and the left and right wall members (13) and (14) and the lower wall member (18) and front and rear wall members (11) and (12) inside thereof are formed on the heat insulation panel (5). To form a duct portion (10) that opens upward.

The total thickness of the heat insulation panel (5) is about 11
It was 0 mm.

By the above-mentioned injection foaming, the heat insulating material (36) (46) made of a polyurethane resin foam is formed into the frame member (15) (1
6) (17) and the wall members (11) (12) (13) (14) (18), because they are strongly bonded by so-called self-adhesion, respectively,
It does not cause peeling of the adhesive and has a sufficiently high strength. In particular, in this embodiment, the front and rear wall members (1
1) Insulation board (23) of (12) and stainless steel back plate
Since the (22) is made smaller than the aluminum face plate (21), the polyurethane foam made by injection foam is not only the back plate (22) but also the left and right side edges of the face plate (21).
(21a) (21b) and the inner surface of the lower edge (21c) are also joined, and both side walls (31a) of the left and right wall members (13) and (14) of the U-shaped stainless steel plate (31). ) (31a) is the insulation board (3
Since it is made wider than the width of 3), the polyurethane resin foam made by injection foaming is used for the insulation board (33) (33).
Not only the side walls (31a) (31a) of the stainless steel plate (31)
Of the stainless steel plate (41) with a substantially U-shaped cross section of the lower wall member (18).
Since the widths of 1a) and (41a) are larger than the width of the heat insulating board (43), the polyurethane resin foam produced by injection foaming is not limited to the heat insulating board (43) (43) but also the stainless steel plate (43). The heat insulating panel (5) is also joined to the extended portions of both side walls (41a) (41a) of 41), so that the heat insulating panel (5) has a sufficient joint strength.

Finally, at a portion near the lower end of the front wall member (11), an opening (24) having a substantially rectangular shape as seen from the front which communicates the duct part (10) with the room such as the heat-retaining room is cut appropriately. Machine (saw)
It is provided by cutting out the required wall portion using.

As shown in FIG. 3, this opening (24)
It is equipped with a gallery (25), and the gallery (25) is attached to the frame (26) along the inner peripheral surface of the substantially rectangular opening (24) and the left and right vertical walls of the frame (26). And a required number of blades (27) inclined inward and downward.

Further, as shown in FIG. 4, the ceiling panel (3) of the prefabricated heat-retaining cabinet (1) is composed of upper and lower double walls (51) (52), and an air passage (53) in the middle thereof. Is provided.

An air inlet (for introducing warm air or cold air from an air conditioner (not shown) into the air passage (53) is provided at the side wall edge portions of the upper wall (51) of the ceiling panel (3). 54) and (54) are provided, and hot air or cold air in the ventilation passage (53) is applied to the duct part (10) of the heat insulation panel (5) on both side edges of the lower wall (52) of the ceiling panel (3). A wind outlet (55) (55) for introduction is provided,
At the center of the upper and lower walls (51) (52) of the ceiling panel (3), exhaust ports (56) (56) for discharging the air in the refrigerator and sending it to the air conditioner are commonly provided. Partition plates (57) (5) that partition the inside of the ventilation passage (53) at both sides or the peripheral edge of the exhaust ports (56) (56)
7) is provided over the upper and lower walls (51) (52).

On the other hand, the floor panel of the prefabricated thermal insulation box (1)
As shown in FIG. 3, (4) is a product in which a heat insulating material (63) made of foamed polyurethane resin is filled between the upper and lower surface plates (61) and (62), and the peripheral edge portion of the upper surface thereof is treated with chloride. A heat insulating panel that is provided with a vinyl resin concave frame member (64) and constitutes a side wall panel (2) at the peripheral portion of the prefabricated heat insulation box (1).
The convex lower frame member (17) of (5) is fitted to the concave frame member (64) of the upper surface peripheral portion of the floor panel (4) to form a side wall panel.
(2) and floor panel (4) are combined, and both frame members (17)
The sealing material (65) (65) is filled in the gap between the (64).

According to the above prefabricated heat-retaining box (1), the warm air or cold air sent from the air conditioner (not shown in the figure) can be discharged from the upper panel (3) of the ceiling panel (3) on both side edges. Wind entrance (5
4) Ventilation passage introduced from (54) into the ventilation passage (53).
The warm air or cold air inside (53) is further passed through the side wall panels (2) from the air outlets (55) (55) at both edges of the lower wall (52) of the ceiling panel (3).
After passing through the duct section (10) of the heat insulation panel (5) constituting the above, the heat insulation panel (5) is introduced into the room of the heat insulation box (1) through the opening section (24) near the lower end thereof. Then, the introduced hot air or cold air adjusts the room temperature, humidity, or air components such as dust, so that the air in the cabinet is cooled by the upper and lower walls (5) of the ceiling panel (3).
1) (52) It is discharged from the exhaust ports (56) (56) formed in the central part and sent to the air conditioner again.

Then, the side wall panel (2) of the heat insulation box (1)
According to the heat insulation panel (5) of the present invention which constitutes the heat insulation panel (5), since the duct part (10) is integrally incorporated.
Since the total weight of itself can be suppressed as much as possible and the weight can be reduced, the workability is improved when the heat insulation box (1) is assembled. Also, since the duct as a separate member is not embedded inside the heat insulation panel as in the past, the heat insulation panel
It is possible to improve the productivity of (5).

When the heat insulating panel (5) is used as an intermediate panel between the side wall panel (2) and the ceiling panel (3) having a large area in, for example, the heat insulation box (1),
By omitting the lower wall member (18) and the lower frame member (17) corresponding to the bottom wall of the duct part (10) of the heat insulating panel (5) and the lower foamed heat insulating material (46) in the middle between them, It may be used as a heat insulation panel (5) having a duct part (10) having an open lower end.

[0047]

As described above, according to the present invention, a heat insulating panel having a duct portion according to the first aspect of the present invention is provided with wide front and rear wall members facing each other, and left and right edge portions of the front and rear wall members. Left and right frame members that are stopped between the parts,
A lower frame member that is fixed to the lower edges of the front and rear wall members, a left and right wall member that is disposed inside the left and right frame members at a predetermined interval, and is interposed between the front and rear wall members, and a lower frame A left wall member and a left wall member in which all the frame members and the wall members are combined, and the lower wall member is disposed inside the member at a predetermined interval and is interposed between the front and rear wall members. In the middle left space part, the right space part in the middle of the right frame member and the right wall member, and the lower space part in the middle of the lower frame member and the lower wall member, respectively, a heat insulating material made of synthetic resin is injected by foaming. Since it is filled and the duct part is formed, the total weight of the heat insulation panel itself including the duct part can be suppressed as much as possible, the weight can be reduced, and the workability can be improved, Productivity can be increased and manufacturing cost can be reduced.

Further, since the duct portion is integrally formed inside the panel by the combination of the frame member and the wall member, there is no concern that the trace of the duct supporting member is transferred to the surface of the panel as in the conventional case. The effect is that the appearance is very beautiful.

A heat insulating panel having a duct portion according to the invention of claim 2 is a lower wall member corresponding to the bottom wall of the duct portion of the heat insulating panel according to the invention of claim 1 and a lower frame member, and an intermediate between these members. The lower foam insulating material is omitted, and both ends of the duct part are opened, and a heat insulating panel having such open end duct parts is used, for example, in a heat-retaining cabinet or the like to provide a side wall panel or a side wall panel having a large area. It can be used as an intermediate panel that makes up the ceiling panel,
Similarly, the total weight of the heat insulation panel itself with the built-in duct part can be suppressed as much as possible, weight reduction can be achieved, workability can be improved, productivity can be increased, and manufacturing cost can be reduced. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a product of the present invention.

FIG. 2 is a horizontal exploded sectional view showing a state before assembling the product of the present invention.

FIG. 3 is an enlarged vertical sectional view of an essential part showing a connecting portion between a side wall panel and a floor panel of a heat-retaining cabinet assembled using the heat insulation panel of the present invention.

FIG. 4 is a schematic side view with partial cutouts of the same heat-retaining cabinet.

[Explanation of symbols]

1 Heat Storage 2 Side Wall Panel 3 Ceiling Panel 4 Floor Panel 5 Heat Insulation Panel 10 Duct 11 Front Wall Member 12 Rear Wall Member 13 Left Wall Member 14 Right Wall Member 15 Left Frame Member 16 Right Frame Member 17 Lower Frame Member 18 Lower Wall Member 21 Aluminum front plate (front metal plate) 22 Stainless steel back plate (back metal plate) 23 Insulation board 24 Opening 31 Stainless steel plate with a substantially U-shaped cross section 32 Recessed groove 33 Insulation board 34 Left space 35 Right space Part 36 Foamed synthetic resin heat insulating material filled by injection foaming 41 Metal plate having a substantially U-shaped cross section 42 Groove 43 Heat insulating material board 44 Lower space part 46 Foamed synthetic resin heat insulating material filled by injection foaming

Claims (2)

[Claims] 1. Wide front and rear wall members (11) (1) facing each other
2), the left and right frame members (15) and (16) that are passed between the left and right edges of the front and rear wall members (11) and (12), and the bottom of the front and rear wall members (11) and (12). Lower frame member that is held between the side edges
(17) and the left and right wall members (13) and (14) which are arranged at a predetermined distance inside the left and right frame members (15) and (16) and are interposed between the front and rear wall members (11) and (12). And a lower wall member (18) disposed inside the lower frame member (17) at a predetermined interval and interposed between the front and rear wall members (11) and (12), the front and rear wall members (11 ) (1
2) consists of a front metal plate (21), a heat insulating board (23) joined to the inner surface of the front metal plate, and a back metal plate (22) covering the heat insulating board (23) from the inside. Material (13) (14)
Is composed of a metal plate (31) having a substantially U-shaped cross section open toward the outside and a heat insulating board (33) housed in a groove (32) of the metal plate (31). ) Consists of a metal plate (41) with a substantially U-shaped cross section that opens downward, and a heat insulating board (43) housed in the groove (42) of the metal plate (41).
5) and the left wall member (13), and the front and rear wall members (1
1) Left side space formed inside the left side edge of (12)
A heat insulating material (36) made of a foamed synthetic resin is filled in the inside of (34) by injection foaming, and the right frame member (16) and the right wall member (13), and the front and rear wall members (11) (12) intermediate between them. In the right side space (35) formed on the inner side of the right side edge of (), a heat insulating material (36) made of foamed synthetic resin is filled by injection foaming, and the lower frame member (17) and the lower wall member (18) ), And the front and rear wall members (11) (12) between these
The lower space portion (44) formed inside the lower end portion is filled with a foam synthetic resin heat insulating material (46) by injection foaming, and the left and right wall members (13) (14) and the lower wall The member (18) and the front and rear wall members (11) and (12) inside thereof form a duct portion (10) that opens upward, and the front wall member (1
A heat insulating panel having a duct portion, which is provided with an opening portion (24) for communicating the duct portion (10) with a room such as a heat-retaining box at a required position of 1). 2. Wide front and rear wall members (11) (1) facing each other
2), the left and right frame members (15) and (16) that are passed between the left and right edges of the front and rear wall members (11) and (12), and the inside of the left and right frame members (15) and (16) The left and right wall members (1) that are arranged at a predetermined interval in the
3) and (14), the front and rear wall members (11) and (12) respectively include the surface metal plate (21) and the heat insulation board (2) joined to the inner surface thereof.
3) and the back metal plate (22) that covers the insulation board (23) from the inside
The left and right wall members (13) and (14) each have an outwardly-opening metal plate (31) having a substantially U-shaped cross section, and a heat insulating material housed in the groove (32) of the metal plate (31). A left space portion formed of the board (33) and formed inside the left frame member (15) and the left wall member (13) and the left and right edge portions of the front and rear wall members (11) and (12) in between. A heat insulating material (36) (36) made of a foamed synthetic resin is filled in the (34) by injection foaming, and the right frame member (16) and the right wall member (13), and the front and rear wall members in the middle thereof. (11) (12)
In the right side space portion (35) formed inside the right side edge portion of the, a heat insulating material (36) (36) made of foam synthetic resin is filled by injection foaming, and left and right wall members (13) (14) and A heat insulating panel having a duct portion, in which a duct portion (10) having both ends opened is formed by the front and rear wall members (11) and (12) portions inside thereof.