WO2014126397A1

WO2014126397A1 - Method for manufacturing heat insulation box with improved heat insulation capacity and heat insulation box manufactured thereby

Info

Publication number: WO2014126397A1
Application number: PCT/KR2014/001183
Authority: WO
Inventors: 김해덕; 윤진호; 박경호
Original assignee: 오씨아이 주식회사
Priority date: 2013-02-13
Filing date: 2014-02-13
Publication date: 2014-08-21
Also published as: KR101560125B1; KR20150099504A; KR20140102150A

Abstract

The present invention relates to a method for manufacturing a heat insulation box with an excellent heat insulation capacity by preventing a heat-exchanging phenomenon, and provides a method for manufacturing a heat insulation box having side panels, a bottom panel, and a door panel, including the steps of: producing a vacuum heat insulation material by using a synthetic silica and an organic fiber; producing a plurality of side panels, a bottom panel, and a door panel by means of the vacuum heat insulation material attached to a basic heat insulation material; assembling the side panels and bottom panel to produce a heat insulation box with an isolation space formed between adjacent ones of the vacuum insulation materials of the side panels and between the vacuum heat insulation materials of the side panels and that of the bottom panel; and sealing the isolation spaces of the heat insulation box with a supplementary heat insulation material.

Description

Method for manufacturing insulation box with improved insulation performance and insulation box manufactured by the same

The present invention relates to a method for manufacturing a thermal insulation box with improved thermal insulation performance and to a thermal insulation box manufactured through the same, and more particularly using a vacuum insulation material, but to improve the thermal insulation effect by preventing heat bridge phenomenon It relates to a manufacturing method and a thermal insulation box manufactured through the same.

Recently, the need for energy saving due to the depletion of fossil fuel, etc. has spread to the global recognition of the urgent need, and the need for environmental protection is spreading to the global movement.

In accordance with the global trend of energy saving and environmental protection, various researches for energy saving and environmental protection are being conducted by using insulation materials where energy is used, such as buildings and warmers.

Significant research has been conducted to utilize vacuum insulators in the field of insulation boxes that minimize heat exchange with the outside, in order to keep the goods within a certain temperature range. In particular, ice that is widely used in the public and stores cold beverages in summer BACKGROUND ART In order to improve insulation performance by installing a heat insulating material inside a box or the like, it has been widely used.

Korean Laid-Open Patent Publication No. 2006-0128936 discloses an invention in which a frozen product requiring cold storage is housed in a cold storage container made of a vacuum insulator. The cold storage container is characterized by bending a vacuum insulation material consisting of a bent portion of the circumferential wall portion of the four sides that are bently connected and bent along the preformed fold line.

US Patent No. 6192703 describes an invention for mounting a vacuum insulated panel in a sealed structure.

Conventional heat insulation technology applied to the above-mentioned heat insulation and heat insulation case has been pointed out that the performance of heat insulation and heat insulation case is inevitable due to poor performance of heat insulation or poor workability of heat insulation.

In addition, although the vacuum insulation material has 8 times more excellent thermal insulation performance than the general insulation material, the outer surface of the vacuum insulation material is adopted as a metallic vacuum bag, so that the connecting contact portion of the vacuum insulation material has a simple shape such as a right angle shape or an inclined surface shape. Manufactured and supplied. Accordingly, when the vacuum insulator is constructed as a building material, a problem has been pointed out that the heat insulation performance is drastically lowered by transferring heat through a contact surface that is a connection portion of the vacuum insulator, and the same problem is pointed out in the above-described prior art.

On the other hand, Japanese Patent Laid-Open No. 4944567 is a shape in which a hexahedron is deployed in a plane to solve the problem of heat leakage from an edge part due to a heat bridge phenomenon occurring at an end portion of a flat vacuum insulating material applied to a box shape. Disclosed is a vacuum insulator capable of assembling a hexahedron by applying a gas barrier film having a film. However, this vacuum insulation material is not easy to produce a problem that productivity is low.

In addition, Japanese Patent No. 4778856 is an invention for a transport insulation container in which a vacuum insulation material is installed, wherein the insulation container in which the vacuum insulation material is disposed between the inner box and the exterior material includes a bottom surface, and the inside of the insulation container has a bottom surface. It is provided with a vacuum insulating material and a protective member bent over the surface, the inner box uses a foamed polystyrene formed on the container, and provides a heat insulating container detachably provided with the components of the heat insulating container structure. However, such a thermal insulation container has a problem that its volume is large and heavy so that portability is poor.

1. Korean Unexamined Patent Publication No. 2006-0128936 (2006.12.24)

2. United States Patent Publication No. 6192703 (2001.02.27)

3. Japanese Patent No. 4944567 (2008.05.08)

4. Japanese Patent Publication No. 4778856 (2008.02.14)

Accordingly, an object of the present invention is to solve such a conventional problem, while reducing the volume and weight of the thermal insulation box, and a method of manufacturing a thermal insulation box with improved thermal insulation performance that can improve the thermal insulation effect of the thermal insulation box and manufacturing through it To provide a thermal insulation box.

The above object, according to the present invention, in the heat insulation box manufacturing method for manufacturing a heat insulation box having a side panel, a bottom panel and a door panel, a vacuum insulation material manufacturing step of manufacturing a vacuum insulation material using synthetic silica and organic fibers; A panel manufacturing step of attaching the vacuum insulation material to the basic insulation material to manufacture a side panel, a bottom panel and a door panel; A box manufacturing step of manufacturing a heat insulation box by assembling the side panel and the bottom panel such that a space is formed between the vacuum insulation of each of the side panels adjacent to each other or between the vacuum insulation of the side panel and the vacuum insulation of the bottom panel; It is achieved by the method of manufacturing a thermal insulation box comprising; an airtight step of hermetically sealing the spaced space of the thermal insulation box with a heat insulating auxiliary material.

Here, the foaming step of foaming the foam material in the heat insulation box; preferably further comprises.

In addition, the foaming step is an external jig mounting step of fixing the heat insulation box inside the external jig; An internal jig mounting step of fixing the internal jig to the inside of the insulation box; It is preferable to include a; injection step of injecting a foam material between the outer jig and the inner jig.

The method may further include attaching a first heat insulating member to the first heat insulating member to attach the first heat insulating member to the vacuum heat insulating material of the side panel to the vacuum insulating material non-formed region of the base heat insulating material of the side panel. desirable.

In addition, the first heat insulating member is formed of a material made of polyurethane (PU) or polyethylene (polyethylene: PE) material, but preferably provided in the form of a sponge.

In addition, the separation space is preferably provided with a spacing between 1 mm to 10 mm between the adjacent vacuum insulation.

In addition, in the box manufacturing step, it is preferable to assemble the respective side panels or the bottom panel and the side panel using a urethane-based adhesive.

The side panel may include a plurality of side panels, and a through part forming step of forming a through part in at least one of the side panels.

In addition, the second heat insulating member mounting step of interposing the second heat insulating member to the inside of the through part so as to maintain the airtight or heat insulation of the heat insulating box.

In addition, the second heat insulating member is formed of a material of polyurethane (PU) or polyethylene (polyethylene: PE) material is preferably provided in the form of a sponge.

In addition, the heat insulating auxiliary material in the airtight step is preferably formed of foamed polyurethane.

In addition, in the panel manufacturing step, the door panel is preferably manufactured by attaching the basic insulating material on two opposite surfaces of the vacuum insulating material.

Moreover, the said object is achieved by the heat insulation box manufactured through the manufacturing method of the heat insulation box in any one of Claims 1-12 according to this invention.

In addition, the above object is, according to the present invention, a floor panel; A side panel connected along an edge of the bottom panel; And a door panel disposed to face the bottom panel so as to interpose the side panel, wherein each of the side panel, the bottom panel, and the door panel comprises: (a) a basic insulation; And (b) a vacuum insulating material attached to the basic insulating material and having a smaller area than the basic insulating material, the vacuum insulating material including synthetic silica and organic fibers, between the vacuum insulating material of each of the adjacent side panels and the vacuum of the side panel. It is achieved by an insulating box in which a heat insulating auxiliary material is interposed in at least one space formed between at least one of the heat insulating material and the vacuum insulating material of the floor panel.

Here, it is preferable that the basic insulation of each of the side panels adjacent to each other come into contact.

In addition, it is preferable that the base insulation of the side panel and the base insulation of the bottom panel contact.

According to the present invention, there is provided a method for manufacturing a thermally improved thermal insulation box and a thermal insulation box manufactured through the same, by attaching a vacuum insulator on six surfaces of the thermal insulation box to minimize heat loss due to radiation.

In addition, by attaching a plurality of vacuum insulating material on the inner six surfaces of the heat insulating box it is possible to minimize the heat loss even when the vacuum failure of the vacuum insulating material.

In addition, it is possible to improve the adhesion and airtightness between the heat insulating material by foaming the foam material in a portion between the heat insulating box and the vacuum insulating material.

In addition, the insulation member is also installed in the space between the door panel and the side panel to maximize the insulation effect, so that a high-performance insulation box that can be used as a protective device to accommodate expensive measuring devices for a long time in cryogenic or cryogenic regions Can provide.

In addition, compared to the conventional heat insulation box, the volume is reduced compared to the performance, and the weight is light, thereby improving portability.

1 is a flow chart schematically showing a method of manufacturing a thermal insulation box according to an embodiment of the present invention,

2 is a perspective view schematically showing a panel manufactured through a panel manufacturing step in the method of manufacturing a thermal insulation box according to FIG.

FIG. 3 is a front view schematically illustrating a through part formed in a front panel manufactured through the through part forming step in the method of manufacturing a heat insulation box according to FIG. 1,

Figure 4 is a perspective view schematically showing the assembly of the rear panel and the right side panel through the box assembly step in the manufacturing method of the insulating box according to Figure 1,

5 is a perspective view schematically showing a state in which a side panel assembly is formed through a box assembling step in the method of manufacturing an insulating box according to FIG. 1,

FIG. 6 is a plan view schematically illustrating a separation space formed in the side panel assembly through a box assembly step in the method of manufacturing an insulating box according to FIG. 1,

7 is a perspective view schematically showing a state of assembling the side panel and the bottom panel through the box assembly step in the manufacturing method of the insulating box according to FIG.

8 is a perspective view schematically illustrating a state in which a side panel and a bottom panel are assembled through a box assembling step in a method of manufacturing a heat insulation box according to FIG. 1,

FIG. 9 is a perspective view schematically showing a state in which a second heat insulating member is interposed through a through part through a second heat insulating member mounting step in the method of manufacturing a heat insulating box according to FIG. 1;

FIG. 10 is a perspective view schematically illustrating a state in which a space between spaces is separated by a heat insulating auxiliary material through an airtight step in the method of manufacturing a heat insulation box according to FIG. 1.

FIG. 11 is a plan view schematically illustrating a state in which an exterior jig is mounted on an outer side of an insulation box through an exterior jig mounting step in the method of manufacturing an insulation box according to FIG. 1;

12 is a perspective view schematically illustrating a state in which the interior jig is mounted inside the insulation box through the interior jig mounting step in the manufacturing method of the insulation box according to FIG. 1;

FIG. 13 is a plan view schematically illustrating a state in which a foam material is injected into an insulation box through an injection step in the method of manufacturing an insulation box according to FIG. 1;

FIG. 14 is an exploded perspective view schematically illustrating a door panel in which a cut part is formed in the insulating box manufacturing method according to FIG. 1;

FIG. 15 is a front sectional view schematically illustrating a state in which a first insulation member is mounted between a side panel and a door panel through a first insulation member mounting step in the insulation box manufacturing method according to FIG. 1;

16 and 17 are photographs of the insulation box manufactured by the insulation box manufacturing method according to FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the manufacturing method of the insulating box according to an embodiment of the present invention.

1 is a flow chart schematically showing a method of manufacturing a thermal insulation box according to an embodiment of the present invention.

Referring to Figure 1, the manufacturing method of the thermal insulation box according to an embodiment of the present invention (S100) is to prevent the thermal insulation of the thermal insulation box is lowered by the occurrence of thermal bridges in the thermal insulation box, preparing a vacuum insulation material Step (S110) and the panel manufacturing step (S120) and the box manufacturing step (S130) and the airtight step (S140) and foaming step (S150) and the first heat insulating member attaching step (S160).

In addition, an embodiment of the present invention can maximize the internal space of the insulating box by attaching a thin thickness of the vacuum insulating material to the insulating box, even in the polar region by minimizing heat loss in some spaces adjacent to the vacuum insulating material facing each other It is possible to provide a thermal insulation box that can be used.

On the other hand, prior to explaining the manufacturing method (S100) of the insulating box according to an embodiment of the present invention, a thermal bridge phenomenon (thermal bridge) which is one of the problems to solve the present invention will be described.

“Thermal bridge” is substantially the same as cold bridge, in which a part of the wall becomes inherently or acquired thinner than other parts, or the material forming the adjacent walls is different When smaller parts occur, it means a phenomenon that is easy to condensate.

Here, in the case of the vacuum insulation material, in order to maintain the thermal insulation performance for a long time, it is packaged using an airtight foil made of a synthetic resin layer of metal laminating (laminating), and when the surfaces of the vacuum insulation material comes into contact with each other, the metal laminating (packing material) Laminating films may come into contact with each other, resulting in a lower thermal permeation resistance in the structure, which may result in thermal bridges.

Accordingly, in one embodiment of the present invention, when assembling the panel manufactured by using the vacuum insulator 10, the adjacent vacuum insulators 10 are assembled so that the adjacent vacuum insulators 10 do not come into contact with each other. ) And filling the separation space 115 with the heat insulating auxiliary material 116 (see FIG.) To prevent thermal bridges and maintain and improve the heat insulating performance of the heat insulating box 1.

The vacuum insulation material preparation step (S110) is a step of preparing a vacuum insulation material 10 prepared by mixing synthetic silica and organic fibers.

Here, the vacuum insulator 10 is preferably thin so as to expand the internal space of the heat insulating box 1, it is preferable to have an excellent heat insulating performance.

On the other hand, the characteristic technical features of the vacuum insulation material 10 is a powder mixture containing synthetic silica having an average particle size of 5 ~ 50nm and organic fibers cut to 6 ~ 40mm 0.5 to 100 parts by weight of the powder mixture ~ 10 parts by weight of the included fiber mixture, and then using the inner core (core) made by six-side wrapping (Wrapping) with a heat shrink film.

The characteristic of the vacuum insulation material 10 prepared in the above-described vacuum insulation material preparation step (S110) is that it uses organic fibers. Reinforcing fibers for vacuum insulation materials that have been used so far include inorganic fibers, glass fibers and ceramic fibers. The two inorganic fibers are mixed well as they are made of silica and similar components, which are the main materials of the inner core, but the two fibers have little reinforcing effect of mechanical strength when mixing, and the specific gravity is high as glass fiber 2.5 and ceramic fiber 3.0, and the thermal conductivity is high. There is a high degree of disadvantage.

Therefore, the vacuum insulating material 10 of the present embodiment introduced organic fibers as reinforcing fibers in order to improve the disadvantages of the vacuum insulating material using inorganic fibers as reinforcing fibers. The reinforcing fiber used as the inner core material of the existing vacuum insulation material was glass fiber and ceramic fiber among inorganic fibers.Inorganic fiber is mainly composed of silica and alumina powder such as synthetic silica, so it is well mixed with synthetic silica and weak in compression. It is known to exhibit a high reinforcing effect by exerting a bonding force. On the other hand, organic fibers were considered to be easily separated and had low reinforcement effects because they had no bonding force during compression, and organic fibers were also known to have a problem of increasing the internal pressure of the vacuum insulator by generating gas in a vacuum. However, the inventors of the present invention devised an organic fiber having a low specific gravity in order to improve the high specific gravity of the inorganic fiber, and in a range capable of mixing the fiber lengths of the organic fiber and the synthetic silica to prevent the organic fiber and the synthetic silica from easily separated. Increased, maximizing the friction between organic fibers and synthetic silica.

As a result, the frictional force with the synthetic silica in the bent portion of the bent organic fibers effectively acted to find the effect of improving the mechanical strength of the inner core material superior to the weak bonding effect of the inorganic fibers. Organic fiber has little bonding effect with synthetic silica in the inner core of vacuum insulation material, but the friction between fiber and synthetic silica generated at the bend of the fiber shows greater strength reinforcement effect than the existing fiber.

On the other hand, the length of the organic fiber is preferably cut to 6 ~ 40mm, it is more preferable to use a predetermined length of organic fibers than to use a variety of organic fibers. If the length of the organic fiber is shorter than 6mm, the fiber reinforcing effect is remarkably inferior, and if the length of the organic fiber is longer than 40mm, partial aggregation occurs and it is difficult to homogeneously mix with the powder.

Further, the diameter of the organic fiber is preferably 1 to 100 µm, more preferably 10 to 40 µm in diameter. Organic fibers are produced in bundles, so if they are smaller than 1 μm, it takes a lot of time to disperse them.

Here, as the type of organic fibers used, 1.4 or less organic fibers of true specific gravity, such as PE, PP, Nylon, PVA, PAN, PET, can be used. In order to reinforce the fiber of the inner core, it is preferable to use only organic fibers, but it is also possible to mix organic fibers with high specific carbon fibers and glass fibers. Even in this case, the main reinforcing function is the organic fiber.

On the other hand, the vacuum insulator 10 in one embodiment of the present invention is made of a mixture of powder and organic fibers containing synthetic silica. Here, the average primary particle size of the synthetic silica is preferably used 5 ~ 50nm. If the primary particle size is smaller than 5 nm, the volume becomes large and handling is difficult. If the primary particle size is larger than 50 nm, sufficient adiabatic effect cannot be obtained during compression. In addition, it is preferable to use 40-400 m <2> / g of BET specific surface areas of synthetic silica. When the specific surface area is 40 m 2 / g or less, the thermal insulation is inferior, and when it exceeds 400 m 2 / g, it is too fine to make the internal core material is difficult.

Here, the synthetic silica can be used as fumed silica produced by the gas phase reaction, precipitated silica produced by the liquid phase reaction, colloidal silica, aerogel, silica sol and the like. Among them, the use of fumed silica with low manufacturing cost and high specific surface area is preferable. The inner core material of the vacuum insulator can be manufactured only with pure synthetic silica powder, and in addition to the synthetic silica, powders such as alumina, titanium oxide, silicon carbide, and graphite can be mixed to increase thermal insulation. Preferably, the content of synthetic silica in the preferred inner core powder mixture is 70% or more.

In addition, the vacuum insulation material 10 according to an embodiment of the present invention is preferably mixed with an infrared opaque fire material for blocking radiant heat and synthetic silica. Infrared opaque fires used for the inner core material include titanium oxide, carbon black, talc, silicon carbide, iron oxide, zirconium oxide, and graphite. These opaque fires have a function of blocking rapid heat transfer by radiation by reflecting or absorbing more than half of the far infrared rays emitted from an object at 15 to 40 ° C. The opaque fire material may occupy 5 to 30 parts by weight per 100 parts by weight of the inner core material. The average particle size of the components constituting the opaque fire is 1 ~ 90㎛ or less the particles are better effect.

Further, the content of the mixture of organic fibers is preferably 0.5 to 10 parts by weight based on 100 parts by weight of the synthetic silica-containing powder mixture. If the organic fiber content is too high, it accelerates the change over time of the vacuum insulation material 130 to lower the thermal insulation performance.

On the other hand, for the blending of the synthetic silica-containing powder mixture and the organic fiber-containing fiber mixture, it is preferable to mix the powder mixture and the fiber mixture homogeneously in a mixer at a predetermined compounding ratio. Alternatively, the synthetic silica-containing powder mixture and the organic fiber-containing fiber mixture may be laminated in separate layers, but the mechanical strength improvement effect may not be as good as that of the homogeneous compounding.

The manufacturing process for making the inner core of the vacuum insulator from the synthetic silica-containing powder mixture and the organic fiber-containing fiber mixture takes several steps. Here, various manufacturing processes are possible according to the arrangement order of each step. But the result has similar properties.

Here, the easiest process for manufacturing the vacuum insulating material 10 comprises the steps of separately drying the synthetic silica-containing powder mixture and the organic fiber-containing fiber mixture; Blending the dried powder mixture and the fiber mixture in a ratio; Compacting the blend.

The drying of the synthetic silica-containing powder mixture is preferably 100 to 150 ° C. drying at atmospheric pressure for the purpose of evaporating moisture. The drying method of the fiber mixture including organic fibers varies depending on the heat resistance temperature of the fibers. Nylon fiber has a heat resistance temperature of more than 1120 ℃, it is preferable to dry the pressure of 100 ~ 140 ℃, but PP fiber drying having a low heat temperature is preferably low pressure drying at a lower 70 ~ 80 ℃. The organic fiber is preferably dried at a temperature of 10 ~ 20 ℃ lower than the softening temperature of the fiber. The blending of the synthetic silica-containing powder mixture and the organic fiber-containing fiber mixture can be used with powder mixers such as ribbon mixers, Nida-groups, Nauta-mixers, and blade mixers. The evenly blended mixture is compressed by a press, controlling the density of the inner core. The density of the inner core is an important factor that greatly affects the mechanical strength and thermal insulation of the finished product, and it is preferable to compress at a density of 0.12 to 0.35 g / cm 3. Presses can be manufactured with both single-acting presses and roller presses.

The vacuum insulation material 10 of the present invention may use a heat shrinkable film or a film having moisture permeability to wrap six sides after blending the powder mixture and the fiber mixture, which are core materials. The heat-shrink film is selected from PE, LLDPE, PP, PVC, PET and the like, and the moisture-permeable film has a water vapor transmission rate of 30 g / m 2 or less per 24 hours or a water vapor transmission coefficient of 0.28 g / m 2 · h · mmHg or less. It is done.

The compression molded vacuum insulation material 10 is wrapped by six-side wrapping with a heat-shrink film selected from PE, LLDPE, PP, PVC, PET, etc., and finally vacuum-packed with a final finishing material such as nylon, PET, PP, or aluminum multilayer film. Can be used as

The six-side wrapping used in the present invention (Wrapping) packaging uses a heat-shrink film selected from PE, LLDPE, PP, PVC, PET, in the heat-insulating material is required moisture resistance of 30 g / ㎡ or less per 24 hours or A film having a moisture permeability of 0.28 g / m 2 · h · mmHg or less is used, and wrapping is carried out once or twice. PE film packaging wraps the silica insulation molded body with PE film and seals it with heat adhesion. Shrink film packaging such as LLDPE wraps the silica insulation molded body with the shrink film such as LLDPE and shrink wraps using a shrink wrap machine.

Six-side wrapping wrapped with heat-shrink film selected from PE, LLDPE, PP, PVC, PET to improve the physical properties such as bending strength, hygroscopicity, light weight. In addition, when using a film with moisture-permeable resistance, it satisfies the moisture-proof floor standard in the energy-saving design standard of the building and omits the process of installing the moisture-proof film when installing the insulation material on the inner wall of the building, thereby reducing the construction period and labor cost when applying the construction site. Can be imported.

Another internal core manufacturing process includes the steps of blending a synthetic silica-containing powder mixture and an organic fiber-containing fiber mixture; Drying the moisture of the blend; Compressing the dried formulation is possible.

Another internal core manufacturing process includes the steps of blending a powder mixture containing synthetic silica and a fiber mixture containing organic fibers; Compacting the blend; It is possible to dry the compressed formulation.

Vacuum insulating material 10 of the present invention is finally subjected to the final packaging process as an aluminum packaging material. The final packaging of the vacuum insulation material 10 according to an embodiment of the present invention is wrapped by wrapping the two corners of the four corners of the vacuum insulation material 10 with n1 aluminum packaging material, finally wrapped by the aluminum packaging material. The other two corners may maintain the most stable vacuum packaging state in which the vacuum is not terminated even if the bend is formed in the vacuum insulation material 10 by wrapping the aluminum packaging material in, for example, three-stage folding.

FIG. 2 is a perspective view schematically showing a panel manufactured through a panel manufacturing step in the method of manufacturing an insulating box according to FIG. 1.

Referring to FIG. 2, the panel manufacturing step (S120) may include attaching the above-described vacuum insulation material 10 to the basic insulation material 20 to manufacture the side panel 110, the bottom panel 120, and the door panel 130. Step.

In an embodiment of the present invention, the heat insulation box 1 is provided in a rectangular shape, so that the side panel 110 includes the front panel 111, the rear panel 112, the left side panel 113, and the right side panel 114. It may include.

On the other hand, each panel is manufactured by attaching the vacuum insulating material 10 on one surface of the basic insulating material (20). Here, the vacuum insulation material 10 may be attached to one layer of the basic insulation material 20, but two or more layers are attached to reduce the thermal insulation performance due to poor vacuum of the vacuum insulation material 10 during the manufacturing process of the thermal insulation box (1). You can prevent it.

In addition, the vacuum insulation material 10 during the production of each panel to have a smaller size than the basic insulation material 20 so that when the vacuum insulation material 10 and the foundation insulation material 20 is attached, the vacuum insulation material in the corner portion of the foundation insulation material 20 The remaining space to which the 10 is not attached can be formed.

The base insulation 20 and the vacuum insulation 10 may be attached in a state where the center of the base insulation 20 and the center of the vacuum insulation 10 coincide with each other so that the remaining space is formed, or the foundation insulation 20 The remaining space can be secured by indicating the area to which the vacuum insulator 10 is attached on the outer surface of the substrate.

Here, the remaining space may be used as a space for assembling each panel in a later box manufacturing step (S130), the size of the remaining space in advance so that the vacuum insulation materials 10 attached to the panels adjacent to each other do not touch each other. Can be set.

On the other hand, when attaching two or more layers of vacuum insulation material 10 on the basic insulation material 20, each of the vacuum insulation material 10 may be attached via a double-sided tape. In this case, the double-sided tape may be attached in a state spaced 1 to 2 mm from each corner of the vacuum insulator 10.

Here, an additional pressure may be applied to the vacuum insulators 10 attached to each other through the double-sided tape, and the separation distance between the vacuum insulators 10 attached to each other is preferably 0.5 mm.

Meanwhile, the penetrating part forming step S121 may be additionally performed after the panel manufacturing step S120 according to the exemplary embodiment of the present invention.

FIG. 3 is a front view schematically showing that the through part is formed in the front panel manufactured through the through part forming step in the method of manufacturing the thermal insulation box according to FIG. 1.

Referring to FIG. 3, the penetrating part forming step S121 is a step of forming a penetrating part on at least one of the side panels 110. A penetrating part 111a is formed on the front panel 111 for convenience of description. Assume that

On the other hand, the penetrating portion (111a) is a part of the front panel 111, preferably cutting the basic insulating material constituting the front panel 111 so as to effectively maintain the thermal insulation performance while connecting the inside and outside of the heat insulating box (1) do. In particular, the components such as cables can be connected to the outside and the insulation performance can be maintained, so that the electrical equipment can be easily used even in areas where the temperature difference between the inside and outside, such as polar regions, is large.

Here, the through part 111a may be formed in a semi-circular shape, but is not limited thereto, and may be formed in various shapes according to a target to be penetrated.

On the other hand, the door panel 130 may be manufactured by attaching the basic insulating material 20 on opposite sides of the vacuum insulating material 10. Here, the basic heat insulating material 20 attached to the upper surface of the vacuum insulating material 10 is disposed outside the heat insulating box 1, the basic heat insulating material 20 attached to the lower surface of the vacuum heat insulating material 10 is a heat insulating box (1) It is disposed inside of.

FIG. 14 is an exploded perspective view schematically illustrating a door panel in which a cut part is formed in the insulating box manufacturing method according to FIG. 1.

Referring to FIG. 14, the base insulating material of the door panel 130 may form a cut portion 131 which cuts a part of a region facing the through portion 111a. Therefore, a part of the second heat insulating member 111 b may contact the cut portion 131 side in the basic heat insulating material of the door panel 130, and as a result, the second heat insulating member 111 b may pass through the through portion 111 a and the cut portion ( It may be installed between the 131.

Figure 4 is a perspective view schematically showing the assembly of the rear panel and the right side panel through the box assembly step in the manufacturing method of the insulating box according to Figure 1, Figure 5 is a box assembly in the manufacturing method of the insulating box according to Figure 1 6 is a perspective view schematically illustrating a side panel assembly formed through the step, and FIG. 6 schematically illustrates a separation space formed in the side panel assembly through the box assembly step in the method of manufacturing the insulation box according to FIG. 1. 7 is a perspective view schematically illustrating a state in which the side panel and the bottom panel are assembled through the box assembly step in the method of manufacturing the insulating box according to FIG. 1, and FIG. 8 is a manufacturing method of the insulating box according to FIG. 1. In Figure 3 is a perspective view schematically showing the assembled state of the side panel and the bottom panel through the box assembly step.

4 to 8, the box manufacturing step (S130) is a step of manufacturing the insulation box 1 by assembling each side panel 110 and the bottom panel 120, and each side panel 110. ) To form a space between the vacuum insulator of the () or between the vacuum insulator of the side panel 110 and the vacuum insulator of the bottom panel 120 to manufacture a thermal insulation box (1).

This box manufacturing step (S130) may be performed by a variety of methods, referring to Figures 4 and 5 in one embodiment of the present invention after assembling the side panel 110 in the insulating box 1, Figure 7 and 8, it will be described as manufacturing by assembling the bottom panel 120 under the assembled side panel 110.

First, the front panel 111, the rear panel 112, the left side panel 113 and the right side panel 114 are assembled to assemble the side panel 110 in a quadrangular shape in which the upper and lower sides are opened as a whole.

Here, referring to FIG. 6, the vacuum insulator in the front panel 111 is adjacent to the vacuum insulator in the left side panel 113 and the vacuum insulator in the right side panel 114, and the vacuum insulator in the back panel 112 is Since the vacuum insulator of the left side panel 113 and the vacuum insulator of the right side panel 114 are adjacent to each other, the vacuum insulator in the front panel 111 is between the vacuum insulator of the left side panel 113 and the right side panel 114. A space 115 is formed between the vacuum insulator. Similarly, the vacuum insulator in the rear panel 112 forms a space (not shown) between the vacuum insulator of the left side panel 113 and the vacuum insulator of the right side panel 114.

That is, a total of four separation spaces are formed by assembling the side panel 110.

Here, each of the space is preferably a distance between the vacuum insulation material adjacent to each other in the range of 1 to 10 mm.

On the other hand, an adhesive may be used to assemble the respective side panels 110, and the adhesive may be preferably a urethane-based adhesive, more preferably a cryogenic urethane-based adhesive.

After assembling the side panels 110 as described above, the bottom panel 120 is assembled to the lower side of the side panel 110 assembly. Here, the side panel 110 and the bottom panel 120 may be assembled by applying an adhesive to the remaining space of the bottom panel 120.

In addition, the remaining space of the bottom panel 120 may be provided to correspond to the lower end of the side panel 110 assembly so that the side surface of the vacuum insulation of the bottom panel 120 may be in surface contact with the remaining space of the side panel 110. The outer side of the side panel 110 assembly and the side of the bottom panel 120 may be disposed on the same plane.

Meanwhile, a space is formed between the vacuum insulators of the side panel 110 and the vacuum insulator of the bottom panel 120, and the spaces between the vacuum insulators adjacent to each other are spaced apart in a range of 1 to 10 mm. It is preferable.

On the other hand, an adhesive may be used to assemble the side panel 110 and the bottom panel 120, preferably an urethane-based adhesive, more preferably a cryogenic urethane-based adhesive.

Meanwhile, in one embodiment of the present invention, the second heat insulating member mounting step S131 may be additionally performed to hermetically seal the through part 111a formed in the panel manufacturing step S120.

FIG. 9 is a perspective view schematically illustrating a state in which a second heat insulating member is interposed through a through part through a second heat insulating member mounting step in the method of manufacturing a heat insulating box according to FIG. 1.

Referring to FIG. 9, the second heat insulating member mounting step S131 includes a second heat insulating member 111b corresponding to a shape of the through portion 111a for airtightness and heat insulation of the through portion 111a. 111a) This step is installed through the inside.

For example, when a cable or harness flows into the heat insulation box 1 through the through part 111a, the second heat insulating member 111b is interposed between the through part 111a and the through part 111a. Through the inside and outside of the insulation box (1) to prevent the connection.

Here, the second heat insulating member 111b may be provided in a donut shape. In addition, the second heat insulating member 111b may be manufactured to be about 150% larger than the diameter of the penetrating portion 111a and mounted to the penetrating portion 111a by interference fit to minimize the gap caused by the penetrating portion 111a.

In addition, the second heat insulating member 111b may easily pass through the penetrating portion 111a to have the object to pass through the penetrating portion 111a, and may have a suitable elastic force to maintain insulation performance, but may be worn by friction. It is preferable that it is made of a material having few. For example, the material of the second heat insulating member 111b may be selected from polyurethane (PU) or polyethylene (PE) material, and preferably, polyurethane (PU) material. In addition, the second heat insulating member 111b may be provided in the form of a sponge.

FIG. 10 is a perspective view schematically illustrating a state in which a space between spaced spaces is sealed with a heat insulating auxiliary material through an airtight step in the method of manufacturing a heat insulation box according to FIG. 1.

Referring to FIG. 10, the airtight step S140 may include a space between the vacuum insulation of each side panel 110 and a space between the vacuum insulation of the side panel 110 and the vacuum insulation of the bottom panel 120. The step of airtight with the heat insulating auxiliary material (116).

Here, when the space between the space is sealed with the heat insulating auxiliary material 116, each of the vacuum heat insulating materials may be in contact with each other can exhibit a heat insulating effect 50% or more than when the heat insulating effect is reduced by the thermal bridge phenomenon. In one embodiment of the present invention, the insulating auxiliary material 116 may use a foamed polyurethane.

FIG. 11 is a plan view schematically illustrating a state in which an exterior jig is mounted on an outer side of an insulation box through an exterior jig mounting step in the method of manufacturing an insulation box according to FIG. 1, and FIG. 12 is a method of manufacturing an insulation box according to FIG. 1. Fig. 13 is a perspective view schematically showing the mounting of the built-in jig to the inside of the insulating box through the mounting jig for mounting the interior, Figure 13 is a foam material in the insulating box through the injection step in the manufacturing method of the insulating box according to FIG. It is a top view which shows schematically the injected state.

11 to 13, the foaming step (S150) is a step of foaming the foam material 250 inside the insulation box 1 using the jig 210 for airtightness in the insulation box 1. The external jig mounting step (S151) and the internal jig mounting step (S152) and the injection step (S153).

The external jig mounting step (S151) is a step of fixing the insulating box 1 to the inside of the external jig 220.

The internal jig mounting step (S152) is to fix the internal jig 230 to the inside of the insulating box (1). Here, when the inner jig 230 is in contact with the inside of the heat insulating box 1, the inside of the heat insulating box 1 may be damaged by friction, and the inside jig 230 is wrapped with a packaging material to prevent the inside. Can be.

That is, the external jig 220 and the internal jig 230 are mounted to the inside and the outside of the heat insulation box 1, respectively, to effectively fix the position of the heat insulation box 1.

The injection step (S153) is a foam material 250 in the space between the outer jig 220 and the inner jig 230, more precisely between the base insulation and the inner jig 230 of the side panel 110 assembly. Injecting. In one embodiment of the present invention performs the injection step (S153) through the foam material injection port 240, the injected foam material 250 is finally foamed to improve the airtightness of the thermal insulation box (1).

On the other hand, after the injection step (S153) may additionally remove the external jig 220 or the internal jig 230 from the heat insulating box (1).

FIG. 15 is a front sectional view schematically illustrating a state in which a first insulation member is mounted between a side panel and a door panel through a first insulation member mounting step in the insulation box manufacturing method according to FIG. 1.

Referring to FIG. 15, in the embodiment of the present invention, the first heat insulating member attaching step of attaching the first heat insulating member 132 to the space between the vacuum heat insulating material of the door panel 130 and the basic heat insulating material of the side panel 110 is performed. It may further include (S160).

When the door panel 130 is finally mounted on the heat insulation box 1, the space between the basic insulation material of the side panel 110 and the vacuum insulation material of the door panel 130 does not have a vacuum insulation material among the side panels 110. A space is formed between the formed region and the vacuum insulating material of the door panel 130, so that the airtightness and heat insulating performance of the heat insulating box 1 may be degraded.

To prevent this, the first insulation member 132 may be additionally installed in the space between the basic insulation of the side panel 110 and the vacuum insulation of the door panel 130. Here, the first heat insulating member 132 is provided in a sponge form, it may be selected from a polyurethane (PU) or polyethylene (PE) material.

Hereinafter, the manufacturing method (S100) of the insulating box manufactured by the example applying the manufacturing method (S100) of the insulating box according to an embodiment of the present invention and disclosed in FIGS. 16 and 17 will be described.

In the vacuum insulation material preparing step (S110), the vacuum insulation material of 200 mm × 200 mm × 15 mm to be used for the bottom panel 120 and the door panel 130 is the same as the vacuum insulation material of 159 mm × 159 mm × 18 mm to be used for the side panel 110. It manufactures by a process.

Looking at the manufacturing process of each vacuum insulation material, after drying the PP fiber prepared in a diameter of 40㎛, 19mm length for about 2 hours under a temperature condition of 70 ° C, 97wt% fumed silica powder mixture 97wt%, PP fiber After adjusting to have a magnification of 3wt%, put into a blade mixer and mix for about 10 minutes. After the mixing process, the evenly mixed mixture is placed in a square frame and compressed by a single-acting press to produce a core material having a specific gravity of 0.16. After wrapping the core material on a six-sided (wrapping), it is packed in an aluminum packaging material and injected into a vacuum chamber to evacuate and seal under a pressure condition of 40 bar or less.

In the panel manufacturing step (S120), a 200 mm × 200 mm × 15 mm vacuum insulating material is used for the bottom panel 120 and the door panel 130, respectively, and a 59 mm × 159 mm × 18 mm vacuum insulating material is used for each side panel 110. ) To make panels.

In the box manufacturing step (S130), the separation distance between the space between the vacuum insulation of the side panel 110 and the space between the vacuum insulation of the side panel 110 and the vacuum insulation of the bottom panel 120 is 5mm Side panel 110 and bottom panel 120 were assembled as possible.

In the airtight step (S140), by injecting and foaming the polyurethane between the separation space to achieve a heat insulating airtight without the vacuum insulation materials adjacent to each other.

In the first heat insulating member attaching step (S160), polystyrene, having a thickness of 23 mm X 159 mm X 18 mm, was attached between the vacuum insulating material of the door panel 130 and the basic insulating material of the side panel 110 to form a heat insulating gas.

As a result, the insulation box 1 manufactured by the method of manufacturing the insulation box according to an embodiment of the present invention (S100) has a plurality of side panels 110 connected along the edge of the bottom panel 120 and the bottom panel 120. ) And a door panel 130 facing the bottom panel 120 such that the side panels 110 are interposed between the bottom panel 120 and the bottom panel 120.

Here, each of the side panels 110, the bottom panel 120 and the door panel 130 is attached to the base insulation 20 and the base insulation 20 and has a smaller area than the base insulation 20, synthetic silica And a vacuum insulator 10 including glass fibers.

In addition, the insulating auxiliary material 116 is interposed between the vacuum insulating material of each of the side panels 110 adjacent to each other and between the vacuum insulating material of the side panel 110 and the vacuum insulating material of the bottom panel 130. Done.

Here, the base insulation of each of the side panels 110 adjacent to each other may be provided to contact each other.

In addition, the base insulation of the side panel 110 and the base insulation of the bottom panel 130 may also be provided to contact each other.

Measure the temperature change inside the insulation box by experimenting with the insulation box manufactured by the above-described method and the insulation box manufactured by the above-described method, but designed to be in contact with the vacuum insulation material without installing the basic insulation material between the vacuum insulation material under the same conditions. It was.

Table 1

Hours (h)	0	12	24	36	48	60	72
Internal temperature (° C) of the insulation box according to an embodiment of the present invention	15	15	14	15	11	10	5
Internal temperature (° C) of the insulation box according to a comparative example of the present invention	15	8	2	-10	-15	-20	-20

The above table is a table showing the results of measuring the internal temperature of the thermal insulation box and the thermal insulation box of the comparative example manufactured according to an embodiment of the present invention in a large refrigerator at minus 25 ° C. Looking at it, it can be seen that the internal temperature of the thermal insulation box of the comparative example has a sharp temperature drop after 24 hours, while the internal temperature of the thermal insulation box of the present invention hardly changes in temperature.

That is, the heat insulation box 1 manufactured by the above-described method can be maximized the internal use space by applying a vacuum insulation material 10 having a thin and very excellent heat insulation performance, has a superior heat insulation performance than the conventional heat insulation box In addition, it is possible to provide a compact, lightweight and insulated box.

The scope of the present invention is not limited to the above-described embodiment, but may be embodied in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention claimed in the claims, it is intended that any person skilled in the art to which the present invention pertains falls within the scope of the claims described in the present invention to various extents which can be modified.

Provided is a method of manufacturing a thermally improved thermal insulation box that can improve the thermal insulation effect by using a vacuum insulation material, but prevents thermal bridges, and provides a thermal insulation box manufactured through the same.

Claims

In the heat insulation box manufacturing method for manufacturing a heat insulation box having a side panel, a bottom panel and a door panel,

A vacuum insulating material manufacturing step of manufacturing a vacuum insulating material using synthetic silica and organic fibers;

A panel manufacturing step of attaching the vacuum insulation material to the basic insulation material to manufacture a side panel, a bottom panel and a door panel;

A box manufacturing step of manufacturing a heat insulation box by assembling the side panel and the bottom panel such that a space is formed between the vacuum insulation of each of the side panels adjacent to each other or between the vacuum insulation of the side panel and the vacuum insulation of the bottom panel;

Method of manufacturing a thermal insulation box comprising a; airtight step of hermetically sealing the spaced space of the thermal insulation box with an insulating auxiliary material.
The method of claim 1,

Foaming step of foaming the foam material in the insulation box; manufacturing method of the insulation box further comprising.
The method of claim 2,

The foaming step is an external jig mounting step of fixing the heat insulation box inside the external jig; An internal jig mounting step of fixing the internal jig to the inside of the insulation box; And an injection step of injecting a foam material between the external jig and the internal jig.
The method of claim 1,

And a first heat insulating member attaching step of attaching a first heat insulating member to the vacuum heat insulating material of the side panel so as not to contact the vacuum heat insulating material of the side panel among the basic heat insulating materials of the side panel.
The method of claim 4, wherein

The first heat insulating member is made of a polyurethane (PU) or polyethylene (polyethylene: PE) material of the material manufacturing method of the insulating box provided in the form of a sponge.
The method of claim 1,

The separation space is a method of manufacturing a thermal insulation box is provided with a gap between the adjacent vacuum insulation material 1 mm to 10 mm.
The method of claim 1,

The box manufacturing step is a method of manufacturing a thermal insulation box to assemble the respective side panels or the bottom panel and the side panel using a urethane-based adhesive.
The method of claim 1,

The side panel is provided in plurality,

And a through part forming step of forming a through part in at least one of the side panels.
The method of claim 8,

And a second heat insulating member mounting step of interposing a second heat insulating member to the inside of the through part to maintain the airtightness or heat insulation of the heat insulating box.
The method of claim 9,

The second heat insulating member is made of a polyurethane (PU) or polyethylene (polyethylene: PE) material of the material manufacturing method of the insulating box provided in the form of a sponge.
The method of claim 1,

In the hermetic step, the insulating auxiliary material is a method of manufacturing a thermal insulation box is formed of polyurethane foam.
The method of claim 1,

In the panel manufacturing step, the door panel is manufactured by attaching the basic insulating material on two surfaces of the vacuum insulating material facing each other.
The heat insulation box manufactured by the manufacturing method of the heat insulation box in any one of Claims 1-12.
Floor panels;

A side panel connected along an edge of the bottom panel; And

A door panel disposed to face the bottom panel and to interpose the side panel;

Each of the side panel, the bottom panel and the door panel

(a) basic insulation; And

(b) a vacuum insulation material attached to the foundation insulation material, having a narrower area than the foundation insulation material, and comprising synthetic silica and organic fibers;

An insulating box having a heat insulating auxiliary material interposed between the vacuum insulating material of each of the adjacent side panels and at least one of the vacuum insulating material of the side panel and the vacuum insulating material of the bottom panel.
The method of claim 14,

Insulation box, characterized in that the basic insulation of each side panel adjacent to each other in contact.
The method of claim 14,

Insulation box, characterized in that the base insulation of the side panel and the base insulation of the bottom panel contact.