JP3352576B2 - Method of manufacturing heat insulating structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a heat insulating structure used for a structure having heat resistance in the construction industry of a structure.

[0002]

2. Description of the Related Art Conventionally, high and low temperature cycles, for example, -40
Walls and doors such as thermostatic chambers and drying chambers used at a temperature of from + 150 ° C. to + 150 ° C. are formed of a heat-resistant or durable member capable of coping with the high or low temperature for a long time. I have.

For example, a rectangular frame is formed from a metal frame and a surface material in which a urethane foam resin and an inorganic material such as rock wool, glass wool, and calcium silicate board are installed.

[0006] As shown in FIG. 10, this is framed by a pair of left and right frame members 40, 41 and surface members 44, 45 fitted over joints 42, 43 of the frame members 40, 41. After accommodating the inorganic material 46 in the frame, the urethane resin 47 is foam-filled to form a heat insulating panel 48.
Is formed.

[0005] In general, the heat insulating panel is provided such that the inorganic material side is installed in a storage such as a constant temperature room or a drying room, and the urethane resin side is attached to the outside of the storage.

However, it is difficult to uniformly fill the above-mentioned inorganic material, which is a built-in heat insulating material, around one side of the frame without any gaps. The heat inside the storage gradually moves to the outside of the storage, so-called heat flow is caused to act on the urethane resin.

[0007] However, this urethane resin is excellent in low-temperature characteristics, but in high-temperature use, unless the temperature is lower than + 80 ° C, the urethane itself undergoes secondary foaming, and the foaming pressure causes the urethane to expand in the height direction. It was warped and became a defective product, or a carbonization phenomenon occurred in urethane, resulting in a large decrease in the heat insulation effect, and it could not be used sufficiently as a heat insulation panel used at this high temperature .

[0008] In particular, when a gap is formed in a corner portion during the filling of the inorganic material, the filled urethane resin enters the portion, and a high temperature in the refrigerator acts on the portion to cause secondary foaming. Is generated. And other various problems.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an outer frame having a cavity formed therein so as to surround the periphery thereof, and an outer frame of the outer frame. In a heat insulating structure composed of a heat insulator which is filled and molded in the entire cavity, the heat insulator is filled with granular pearlite to which an adhesive is adhered, and the bonding between the pearlite and the perlite. By being integrally formed by joining to the exterior frame, a heat insulating material made of pearlite is provided on the high temperature side of the refrigerator to shut off the temperature inside the refrigerator. It is an object of the present invention to provide a method for manufacturing a heat insulating structure capable of obtaining the following.

[0010]

Means of the present invention for achieving the above object are to provide an exterior frame having a cavity formed therein so as to surround the periphery thereof, Insulation body consisting of a heat insulator filled and molded in, the heat insulator is filled with granular pearlite to which an adhesive is adhered, the perlite is bonded to each other and the exterior frame of the pearlite And a method of manufacturing a heat insulating component integrally formed by joining the components.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a method for manufacturing a heat insulating structure according to the present invention will be described with reference to the drawings. 1 to 6, A denotes a heat insulating structure formed by the method for manufacturing a heat insulating structure according to the embodiment of the present invention.
C. to + 150.degree. C.), for example, in prefabricated refrigerators / refrigerators,
Wall material of prefabricated drying room, or ceiling material, etc.
It is used for these structures themselves, and is basically constituted by a heat insulator 1 and an outer frame 2.

The above-mentioned heat insulator 1 is formed as a single layer inside the outer frame 2, and has a hollow portion 20 (see FIG. 6) formed around the periphery thereof. When,
The heat insulating body 1 is formed by filling and molding the entire hollow portion 20 of the exterior frame 2.

The heat insulator 1 is a layer having a predetermined thickness in which a large number of pearlites p formed to a predetermined particle size are bonded to each other by an adhesive b.
It is intended to exhibit sufficient heat resistance to the specification of about to + 150 ° C. (the temperature may be higher than this range), and the pearlites p are joined together and the pearlite p is joined to the outer frame 2 integrally. It was formed.

The pearlite p is a granular material obtained by pulverizing an ore, pearlite, pine stone, or the like, and heating it at a high temperature to foam it, and has a particle size of 1.0 to 8.0 mm. Appropriate ones are selected, or each size is mixed and used.

The adhesive b is a conventional synthetic resin having a heat resistance and a cold resistance and having a relatively low viscosity, and is used for filling the exterior frame 2 with pearlite p. And mixed well with the pearlite p.

The above-mentioned exterior frame body 2 is formed into a predetermined shape with a rigid metal or the like and assembled, and as shown in FIGS. 2 and 3, the frame members 30, 31 and the exterior surface material 6, and the interior surface The members 30, 31, 6, and 7 are formed to have a hollow interior and a substantially rectangular cross section.

These frame members 30 and 31 are in contact with both ends of the heat insulating material 1 and correspond to the inside (inside of the structure) and the outside (outside of the structure) of the heat insulating structure A, respectively. When molded into a heat-insulating structure A as shown in FIG. 1 by extrusion or pull-out molding by a neume, the widthwise end portion thereof is, as shown in FIG. 7 and FIG. A concave portion e and a convex portion f into which A is fitted are formed.

Then, when having the concave portion e shown in FIG.
The cross-sectional shapes of the frame members 30 and 31 are formed symmetrically with respect to the inside and outside directions, and engaging pieces 32 and 33 with the exterior surface material 6 and the interior surface material 7 are inserted into both ends. Receiving grooves 34 and 35 are formed in a direction perpendicular to the exterior surface material 6.

The above-mentioned exterior surface material 6 and interior surface material 7 cover both surfaces of the heat insulator 1 and are formed of a plate material such as metal.

In this heat insulating structure A, the outer frame 2 is
The structure shown in FIGS. 2 and 3 and the like can be adopted as well as the structures shown in FIGS.

Further, in the cases shown in FIGS.
a, 3b, outer frame members 4a, 4b, a heat shield 5, an exterior surface material 6, and an interior surface material 7, and these members 3a, 3b, 4a, 4b, 5, 6, 7, The inside of the frame is hollow and the cross-sectional shape is formed in a substantially square shape by the framework.

Of these, the inner frame members 3a and 3b and the outer frame members 4a and 4b are in contact with both ends of the heat insulating material 1 and have a heat insulating structure A
, Corresponding to the inside (inside of the structure) and the outside (outside of the structure), which are extruded or drawn out of aluminum and formed into a heat insulating structure A as shown in FIG. In such a case, the widthwise end portion is formed with a concave portion e and a convex portion f into which the adjacent heat insulating structure A fits.

Although not shown in the figure, the heat insulating structure A may have a straight shape without the concave portion e and the convex portion f.

Then, when a concave portion e shown in FIG. 7 is provided,
The cross-sectional shapes of the inner frame member 3a and the outer frame member 4a are formed symmetrically with respect to the inner and outer directions.
On the outer side of “a”, first receiving grooves 10 a and 11 a into which first locking pieces of the exterior surface material 6 described later are inserted are formed in a direction perpendicular to the exterior surface material 6.

A second receiving groove 12 into which a second locking piece of the interior facing material 7 described later is inserted into an intermediate portion between the main bodies 8a and 9a.
a, 13 a are formed in a direction parallel to the exterior facing material 6 and the interior facing material 7.

Further, inside the main bodies 8a, 9a, mounting grooves 14a, 15a with which a heat shield 5 described later is engaged are formed in a direction perpendicular to the heat insulating structure A.

In the case of having the convex portion f shown in FIG. 8, the inner frame member 3b and the outer frame member 4b are formed symmetrically with respect to the inward and outward directions, and are provided outside the main bodies 8b and 9b.
First receiving grooves 10b and 11b into which first locking pieces of the exterior surface material 6 described later are inserted are formed in a direction perpendicular to the exterior surface material 6.

A second receiving groove 12 into which a second locking piece of the interior facing material 7 described later is inserted into an intermediate portion between the main bodies 8b and 9b.
b, 13b are formed in a direction parallel to the exterior surface material 6. Further, a heat shield 5 described later is provided inside the main bodies 8b and 9b.
The mounting grooves 14b and 15b with which are engaged are formed in a direction perpendicular to the heat insulating structure A.

The above-mentioned heat shield 5 is provided with mounting grooves 14a, 1 at the inner edges of the inner frame members 3a, 3b and the outer frame members 4a, 4b.
4b and 15a, 15b to be engaged with each other.
3b and 4a, 4b are joined together, and the inner frame members 3a, 3b
a heat insulating synthetic resin such as polyvinyl chloride, polycarbonate, or the like, and mounting grooves on both sides of the intermediate base 16. Fitting portions 17, 17 to be inserted into 14a, 14b and 15a, 15b are extended.

By changing the length of the heat shield 5, the thickness of the heat insulating structure A is changed, for example, by 40 m.
Arbitrary sizes such as m, 50 mm, 75 mm, 100 mm, and 125 mm are provided in advance, and are formed as shown in FIG.

As shown in FIG. 9 (d), the heat shield 5 may have the base 16 and the fitting portions 17, 17 formed in a straight shape. Needless to say, any shape and any material may be selected as long as they exhibit a heat insulating effect and have a predetermined strength.

The exterior facing material 6 and the interior facing material 7 are:
First and second receiving grooves 10a, 10b and 11a, 11b and 12a, 12b and 13a, 13b provided on the inner frame members 3a, 3b and the outer frame members 4a, 4b. The two locking pieces 18 and 19 are engaged to cover the surface of the heat insulating material 1 and are formed of a plate material such as a metal. 7 corresponds to a room or the inside of a refrigerator.

The first locking piece 18 is formed by bending both ends of the exterior face material 6 inward at substantially right angles, and the second locking piece 19 is provided at both ends of the interior face material 7. Is formed of a vertical piece 19a which is bent inward and a parallel piece 19b which is extended from the vertical piece 19a and is bent inward.

Therefore, the operation of the method of manufacturing the heat insulating structure A according to the embodiment of the present invention will be described. As shown in FIGS. 2 and 3, the frame members 30, 31 and the exterior surface material 6, and the interior surface material 7 are used. When the frame is formed by the above, the exterior frame 2 in which the hollow portion 20 (see FIG. 6) is formed is formed.
It has an opening at the top.

From the opening of the exterior frame 2 to the cavity 20,
If the pearlite p and the low-viscosity adhesive b are mixed and flowed, the pearlite p spreads to every corner, and becomes solid after the adhesive b is solidified.

If the pearlite p does not reach the details of the exterior frame 2 during filling, the pearlite p alone is filled first, and vibration is applied to the exterior frame 2 or the pearlite p filling portion, or later. Then, a low-viscosity adhesive b is flown to be fixed.

Further, although not shown in the figure, the pearlite p can be forcibly fed by means of a pump such as air by a pump, and is filled evenly to every corner of the outer frame 2. It is.

As a result, the pearlite itself does not undergo any chemical change with the adhesive, and cures naturally without applying foaming pressure, and is automatically bonded to the outer frame 2 as well. In addition to obtaining the heat-insulating structure A with high strength, a sufficient heat-insulating effect is exhibited when using a portion at + 80 ° C. or higher.

In the heat insulating structure A shown in FIGS. 4 and 5, the exterior frame 2 is a predetermined structure, for example, an integrally formed one that forms a constant temperature chamber. Are provided with an exterior surface material 6 and an interior surface material 7, respectively, and the heat insulator 1 is formed by filling the cavity inside thereof with the pearlite p by any one of the methods described above.

This eliminates the need for attaching and detaching various jigs to the outer frame to cope with the foaming pressure, as compared with the case where only urethane or silicon is used as the conventional heat insulating material. The time and the jig can be omitted, so that the cost can be significantly reduced, and the strength of the integrally constructed component A is improved.

In the case of using the exterior frame 2 shown in FIG. 7 in the heat insulating structure A of the above-described embodiment, the interior facing material 7 is placed on a lower mold (not shown) for molding. Then, the pair of left and right outer frame members 4a, 4b is engaged with the second receiving grooves 13a, 13b of the pair of left and right outer frame members 4a, 4b into the parallel pieces 19b, 19b of the second locking piece 19, and the outer frame members 4a, 4b are moved outward. By pulling, the interval is determined in the width direction of the heat insulating structure.

Next, the heat shields 5, 5 for setting the thickness of the component body
The desired size is selected, and the fitting portions 17 of the heat shields 5, 5 are inserted into the mounting grooves 15a, 15b of the outer frame members 4a, 4b.
Fit into And the other heat shields 5, 5 which are protruding
Mounting grooves 14 of the inner frame members 3a, 3b
When a and 14b are inserted and fitted, a frame body surrounded on all sides is formed.

In FIG. 3, reference numeral 37 denotes a reinforcing member made of a rigid material such as metal embedded in the heat insulator 1, and has a cross-sectional shape such as a zigzag shape (adopted in the present embodiment), an H-shape or an L-shape. It is formed and provided over substantially the entire length in the height direction of the heat insulating structure A.

The reinforcing members 37 are provided at a plurality of locations at intervals so as to prevent a bending caused by a bimetal phenomenon due to thermal deformation of the structure A from the high temperature side to the low temperature side.

[0045]

According to the present invention constructed as described above, the exterior frame body surrounding the periphery and having a cavity formed therein, and the entire exterior space of the exterior frame body is filled and molded. In a heat insulating structure comprising a heat insulator, the heat insulator is filled with granular pearlite to which an adhesive is adhered, and is integrally formed by bonding of the pearlite and joining of the pearlite to an outer frame. By doing so, the pearlite itself does not undergo chemical changes with the adhesive, and also cures naturally without applying foaming pressure, and is automatically bonded to the exterior frame, and it is integrated and high In addition to providing a heat insulating structure with strength, it has a unique effect of exhibiting a sufficient heat insulating effect.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view showing a heat-insulating component formed by a method for manufacturing a heat-insulating component according to an embodiment of the present invention.

FIG. 2 is a transverse cross-sectional view of the heat insulating structure shown in FIG. 1 with a part thereof omitted.

FIG. 3 is a partially omitted cross-sectional view showing an example in which a reinforcing body is embedded in the heat insulating structure in FIG.

FIG. 4 is a perspective view of a main part showing another example in FIG. 1;

FIG. 5 is an enlarged cross-sectional view showing a part of the heat insulating structure in FIG. 4;

FIG. 6 is a partially omitted transverse cross-sectional view showing a state where a part of a heat insulating material is filled in an exterior frame of the heat insulating structure in FIG. 1;

FIG. 7 is an exploded perspective view of another part of the exterior frame body on the concave side, showing another example of the heat insulating structure in FIG. 1;

FIG. 8 is an exploded perspective view of a part of the exterior frame body on the convex side showing another example of the heat insulating structure in FIG. 1;

FIG. 9 is an explanatory diagram showing each example of a heat shield of the heat insulating structure in FIG. 1;

FIG. 10 is a cross-sectional view schematically showing a conventional heat insulating structure, with a part thereof omitted.

[Explanation of symbols]

 Reference Signs List A heat insulating component 1 heat insulating material 2 exterior frame 1a first heat insulating material 1b second heat insulating material 1c third heat insulating material p perlite b adhesive 36 shielding member 37 reinforcing member

Claims (1)

(57) [Claims] 1. A heat insulating structure comprising an exterior frame body surrounding the periphery and having a cavity formed therein, and a heat insulator filled and molded entirely in the cavity of the exterior frame body. Wherein the heat insulating body is filled with granular pearlite to which an adhesive is adhered, and is integrally formed by bonding the pearlite and joining the pearlite to an exterior frame. Production method.