KR101013754B1 - Construction vacuum panel insulation and manufacturing method - Google Patents

Abstract

The present invention relates to a vacuum panel heat insulating material and a manufacturing method for building a vacuum panel heat insulating material to improve the heat insulation performance by forming a large number of pores therein by pulverizing the powder and liquefied by high pressure to atomize the powder, more specifically silicon dioxide per unit weight (SiO2) 70%, aluminum oxide (Al2O3) 13%, calcium oxide (CaO) 17% mixed silica powder is melted by heating to a temperature ranging from 1000 ~ 1500 ℃ in the melting mold to drop the oxygen at high pressure Insulate the rod-shaped particles sprayed into the molten liquid into the forming mold by collecting suction and collecting the fine particles in the form of a plate by the rotating pressure roller, cut the core material and laminate the wide surface into two sets of steps Except for one side of the upper, lower, left, and right sides, all sides are wrapped in a sealed bag formed of aluminum foil, and the air is opened through an open portion in which the sealed bag is not wrapped. To seal the mouth and then opened to remove characterized in that it adapted to produce a vacuum thermal insulation panel; In the molten state, oxygen is injected into the melt at a high pressure to collect and shape the melt while the melt is atomized, thereby producing a large number of voids therein.

Description

Vacuum panel insulation and manufacturing method for building {Method for manufacturing vacuum insulation panel}

The present invention relates to a vacuum panel insulating material and a manufacturing method for building, in particular, to a vacuum liquefied powder and then atomized at high pressure to form a large number of pores in the interior by press forming through the collection to improve the insulation performance and architectural vacuum panel insulation and manufacturing method. It is about.

In recent years, from the importance of preventing the warming which is a global environmental problem, energy saving is desired, and the promotion of energy saving is performed also for the consumer equipment.

In particular, for a refrigerator refrigerator, a heat insulating material having excellent heat insulating properties is demanded from the viewpoint of efficiently utilizing cold heat.

As a high performance heat insulating material, there are a core made of a porous body and a vacuum heat insulating material formed by covering the core material with an outer cover material and sealing the inside under reduced pressure.

As a core material of such a vacuum heat insulating material, generally a powder material, a fiber material, or the foamed material which communicated is used, The vacuum heat insulating material which is more excellent in heat insulation performance is calculated | required.

In general, the vacuum insulator has a reduced pressure inside the outer cover material, and therefore, the influence of heat conduction and convection of the gas component to the heat transfer mechanism is small.

In addition, in use in the temperature range below room temperature, there is little contribution of radiation. Therefore, in the vacuum heat insulating material applied to the refrigeration refrigerator below normal temperature, it becomes important to suppress the heat conduction of a solid component.

Therefore, various fiber materials are reported as a core material for vacuum insulation materials which is excellent in heat insulation performance.

For example, Japanese Patent Application Laid-open No. Hei 11-506708 discloses a vacuum insulator using a core material in which a low melting glass composition or a thermoplastic inorganic binder material such as boric acid is dispersed throughout a fibrous material.

In this conventional vacuum insulator, two adjacent glass fibers and glass fibers form a joint at an intersection by an inorganic binder material. Thereby, the fiber of each fiber aggregate is integrated.

Examples of such products are blankets of insulating material, mats and insulation. In addition, the inorganic binder material has almost no gas component generated from the binder under vacuum conditions in the outer cover material like the general-purpose resin binder, and the deterioration of heat insulation performance over time is small.

In the above configuration, the binder bound at the intersection of the inorganic fibers acts as a binder. For this reason, the thermal conductivity in the adiabatic direction increases because the binder solidified at the bonding portion is thermally crosslinked. That is, compared with the core material which consists of a fiber body which does not have a binding site by a binder or an eluting component, the thermal conductivity of a vacuum heat insulating material is increasing.

On the other hand, the fiber body of the structure which does not have the binding site by a binder and an eluting component is small in heat conduction of a solid component, but the state is a bulky aggregation shape, and it is very difficult to handle. In addition, when using it as a core material of a vacuum heat insulating material, an external appearance surface property is impaired by atmospheric compression.

However, in the case of the conventional vacuum insulation material, the porous filler uses urethane foam or glass fiber as the microporous inorganic fiber, and the barrier skin is made of a stainless steel ultra-thin plate (STS) metal material to be molded by vacuum reduction under a press. Although it has the advantage of better thermal insulation performance than general insulation, it is still heavy and not easy to handle, and there are many welding defects at the junction of stainless steel thin plate and the appearance can be formed only in a simple plate shape, so that the uneven part or the bent part Or it is not possible to form a variety of shapes, such as the stepped portion, there is a problem that often occurs when the stainless steel thin plate is bent easily vacuum breakage.

In addition, in the conventional vacuum insulation material vacuum forming apparatus, an airtight bag filled with a porous filler is inserted between the upper vacuum forming plate and the lower vacuum forming plate to reduce the volume by simply reducing the vacuum pressure, so that the vacuum degree inside the vacuum insulation material is low. In addition to the poor thermal insulation performance, it takes a lot of work time to remove the internal gas during vacuum decompression was a disadvantage that the productivity is lowered.

Accordingly, the present invention has been made in view of the above-described problems of the prior art, and the vacuum for building the silica powder is sprayed with oxygen at a high pressure in a molten state at high pressure to collect and shape the molten liquid to form a large number of voids therein. It is an object to provide a panel insulation and a manufacturing method.

In addition, another object of the present invention is to have a structure in which the fine particles are irregularly arranged so that heat is difficult to conduct by melting in a state where the melt is formed by a press action.

In addition, another object of the present invention is to make the silica powder is transformed into the fine particles in the molten state and is collected and press-molded so that the strength is excellent by combining with the strong adhesion between the fine particles.

In order to achieve the above object, the present invention provides a method for manufacturing a vacuum panel insulation for building, comprising: 70% silicon dioxide (SiO 2), 13% aluminum oxide (Al 2 O 3), 17% calcium oxide (CaO) powder per unit weight A silica powder is heated and melted in a melting mold at a temperature in the range of 1000 to 1500 ° C., and is pressed by a pressure roller that collects and rotates the rod-shaped particulates that are dispersed by spraying oxygen into the melt falling at high pressure. The insulation is molded in a plate shape, the core material is cut, and the two sides are stacked in a set so that a wide surface becomes a step shape, and all surfaces except one side of the top, bottom, left and right surfaces are covered with an airtight bag formed of aluminum foil, and the airtight bag The vacuum plate for building, characterized in that the vacuum panel insulation is configured to manufacture the vacuum panel insulation by removing the suction through the open portion is not wrapped around the opening It provides a method and a vacuum insulating material manufacturing insulation panels.

As described above, the present invention has an effect of generating a large number of voids therein by injecting and molding the silica powder in a molten state at high pressure to collect the molten liquid as it is atomized.

In addition, the molten liquid is molded by the pressing action in the atomized state, and thus the fine particles are irregularly arranged to have a structure in which heat is difficult to conduct.

In addition, the silica powder is collected while being changed to the fine particles in the molten state, and is press-molded to combine the fine particles with a strong adhesive force between the fine particles to have an excellent strength.

1 is a cross-sectional view showing the configuration of a device for manufacturing a vacuum panel insulation for building according to the present invention;
2 is a perspective view of a molding die according to the present invention;
3 is a perspective view showing a state in which the heat insulating material according to the present invention is overlapped;
4 is a perspective view of a state in which the heat insulating material of FIG. 3 is inserted into a sealing bag;
5 is a perspective view showing a state in which the vacuum compression while discharging air in the sealing bag of FIG.
6 is a perspective view of the completed vacuum panel insulation according to the present invention,
7 is a cross-sectional view taken along line AA of FIG. 6;
8 is a perspective view showing a state in which the vacuum panel insulation is continuously connected.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

As shown in Figures 1 to 8, the building vacuum panel insulation and the manufacturing method of the present invention is mixed with silicon dioxide (SiO2) 70%, aluminum oxide (Al2O3) 13%, calcium oxide (CaO) 17% powder per unit weight To prepare a silica powder (12).

Thus, the silica powder 12 is melted by heating to a temperature in the range of 1000 ~ 1500 ℃ using the heater 13 in the melting mold 10.

In addition, the silica powder 12 has microporosity, low density to minimize thermal conductivity, billions of nano-pockets to prevent heat transfer, heat energy reflection to reflect heat like a mirror, and a lightweight solid structure. As the powder, it is made to improve the thermal insulation by increasing the degree of vacuum of the vacuum insulation material and to give a deformation of the shape of the uneven part, the bent part or the stepped part in the appearance during panel molding.

In addition, since the silica powder 12 is harmless to humans and is nonflammable, it is very advantageous to be used as a building insulation material or a refrigerator insulation material, and has excellent moldability and low cost compared to glass fiber, urethane foam, and styrofoam used as a conventional insulation core material. It is very advantageous to be used as insulation core material

At this time, the melting mold 10 is formed in the form of a funnel as a whole, the melt is dropped to a small capacity to form a stream of water through the funnel (11).

Here, when the molten liquid falls through the funnel (11), oxygen is injected into the molten liquid falling at high pressure.

As a result, the molten liquid is formed in the form of a plate in the form of a plate by a pressure roller 30 which sucks and collects rod-shaped fine particles scattered by oxygen injected at a high pressure into the mold 20.

At this time, the fine particles are in the form of a cylindrical rod, the diameter is 3μ or less, the length is produced to 200u or less.

Here, the mold 20 has a large area of the inlet 21 through which the fine particles flow, and the narrower the area is formed as the square portion is formed in the shape of a rectangular cylinder 22 as it proceeds backward.

In addition, a plurality of blower holes 21a penetrate the inlet portion 21 along the width direction so as to induce the inflow of fine particles when the suction force of the blower is applied.

In addition, the pressure roller 30 is configured to pressurize the particulates collected through the open space 23 formed in the upper and lower left and right sides of the molding die 20 while rotating the upper and lower left and right sides.

In this case, the open space 23 is generated at a position capable of partitioning the inlet portion 21 and the molding portion 22, and the inlet portion 21 and the molding portion 22 are as much as the open space 23. It is installed spaced apart.

On the other hand, the completed core material 40 is moved to the conveyor belt (22a) located in the lower portion while being exposed through the molding unit 22 of the molding die 20, to the rear of the conveyor belt 22 The cutter 22b which cuts the core material 40 to a fixed size is provided.

That is, by cutting the core material 40 with the cutter 22b and stacking a wide surface in a pair of two to form a staircase, all the surfaces except for one side of the upper, lower, left, and right surfaces formed of aluminum foil 50 Wrapped with

In order to manufacture the sealed bag 50, the aluminum sheet has a thickness of 0.05 to 0.5 mm and overlaps two sheets of aluminum sheets coated with a thermoplastic adhesive resin along the four sides, and then surrounds the three sides of the aluminum sheet. It is manufactured to have an opening on one side by heat bonding production.

In addition, the sealed bag 50 is sequentially so that Ny15μ for antistatic, PE15μ for preventing oxygen penetration, Al15μ for preventing outside air penetration, PE15μ for preventing oxygen penetration, LPP30μ for adhesion from the outer side It is laminated | stacked and formed.

In this way, the core material 40 wrapped in the sealed bag 50 is inserted into a separate vacuum decompression device (not shown in the drawing) and the air in the sealed bag 50 into which the heat insulating material 41 is inserted through the opening. Discharge it.

In other words, the vacuum encapsulation material 60 is manufactured by a method of suction-removing air through an open portion in which the sealed bag 50 is not wrapped and then sealing the open portion.

At this time, the vacuum insulation coefficient of the sealed bag 50 is less than 0.003 W / mok or less, the core material 40 at the time of pressure reduction is reduced to half the initial volume when the vacuum pressure is completed, the opening portion of 150 ~ 160 ℃ It is completed by sealing by heat bonding in the range.

Since the vacuum panel insulation 60 is an outer cover material of an aluminum thin plate and is sealed by reducing the pressure inside the silica powder 12 into the core material, the vacuum panel insulation material 60 may have excellent thermal insulation since the gas thermal conductivity coefficient is almost zero. Therefore, when the vacuum panel insulation 60 is used for building insulation and refrigerator insulation, etc., the insulation performance can be improved and the thickness of the insulation can be greatly reduced, so that the internal space can be expanded.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

10: melting mold 11: funnel
12 silica powder 20 mold
21 inlet 21a: blower hole
22: forming part 22a: conveyor belt
22b: cutter 23: open space
30: pressure roller 40: core material
50: sealing bag 60: vacuum panel insulation

Claims (8)

In the method of manufacturing a building vacuum panel insulation,
A silica powder (12) mixed with 70% of silicon dioxide (SiO2), 13% of aluminum oxide (Al2O3), and 17% of calcium oxide (CaO) per unit weight was prepared at a temperature ranging from 1000 to 1500 ° C in the melting mold 10. By melting by heating
The core material 40 is formed in a plate shape by a pressure roller 30 which suction-collects and rotates the rod-shaped fine particles which are sprayed on the molten liquid falling at high pressure into the forming mold 20 and rotated,
The core material 40 is cut and stacked in a pair of two wide surfaces to form a staircase, and then all surfaces except one side of the top, bottom, left and right surfaces are covered with an airtight bag 50 formed of aluminum foil,
The method of manufacturing a vacuum panel insulation material for building, characterized in that configured to manufacture a vacuum panel insulation material 60 by suctioning and removing the air through the opening that is not enclosed by the sealed bag 50. According to claim 1, wherein the forming mold 20 is characterized in that the area of the inlet portion 21, the fine particles are introduced into a wider and narrower area as it proceeds to the rear, and is composed of a rectangular cylindrical shaped portion 22 Method for manufacturing vacuum panel insulation for construction. The construction of the vacuum panel insulation material for building according to claim 2, wherein the inlet part 21 has a plurality of blower holes 21a penetrating along the width direction to induce the inflow of fine particles when the suction force of the blower is applied. Way. The method of claim 1, wherein the pressure roller 30 is configured to pressurize while rotating the particulates collected through the open space 23 formed in the top, bottom, left and right of the molding die 20 is rotated. Method of manufacturing vacuum panel insulation for construction. In construction vacuum panel insulation,
A silica powder (12) mixed with 70% of silicon dioxide (SiO2), 13% of aluminum oxide (Al2O3), and 17% of calcium oxide (CaO) per unit weight was prepared at a temperature ranging from 1000 to 1500 ° C in the melting mold 10. The blower hole 21a passes through the blower hole 21a along the width direction to induce the inflow of the fine particles through the suction force of the blower while heating and melting and dropping the fine particles sprayed and dispersed in the molten liquid falling at a high pressure. The area is wider and the area becomes narrower as it proceeds backward, and is collected and suctioned into the forming mold 20 composed of the square-shaped forming portion 22 and through open spaces 23 formed on the upper, lower, left, and right sides of the forming mold 20. The collected fine particles are installed on the top, bottom, left and right side to pressurize while rotating The core material 40 is configured in the form of a plate by the pressure roller 30,
The core material 40 is cut and stacked in a pair of two wide surfaces to form a staircase, and then all surfaces except one side of the top, bottom, left and right surfaces are covered with an airtight bag 50 formed of aluminum foil,
Building vacuum panel insulation material, characterized in that configured to complete the vacuum panel insulation material 60 by suctioning and removing the air through the opening that is not enclosed by the sealed bag (50). delete delete delete

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