KR102305563B1 - A Case for Dry Ice Pellet With Enhanced Thermal Insulation - Google Patents

Abstract

A dry ice pellet case with an enhanced heat shielding property according to the present invention comprises: a wall having an accommodation space; a dry ice pellet accommodated in the accommodation space; a heat shielding paint that is applied to an inner wall of the wall, and includes wollastonite; and a cover for opening and closing the accommodation space of the wall. The dry ice pellet case with an enhanced heat shielding property of the present invention applies a heat shielding paint to either the inner wall or the outer wall of the wall to improve the heat shielding performance so that the long-term storage performance of dry ice pellets can be increased. An object of the present invention is to improve the structure of the case in order to further increase the thermal insulation properties.

Description

A Case for Dry Ice Pellet With Enhanced Thermal Insulation

The present invention relates to a dry ice pellet case with enhanced heat shielding properties. More specifically, a tea that can store dry ice pellets in a solid state for a long period of time by increasing the thermal insulation and heat shielding performance to extend the storage period for the dry ice pellets. It relates to a dry ice pellet case with enhanced thermal properties.

In general, since foreign substances are attached to various mechanical devices, parts, press molds, injection molds, etc., a cleaning operation is performed to remove them. The cleaning operation is usually performed using a laser washer or sand blast cleaning device, but a laser cleaner cannot completely remove foreign substances bound to the curved part of the object to be cleaned, and the sand blast cleaning device is This not only causes abrasion of the object to be cleaned, but also increases contamination as the spray material is inserted into the curved crevice and remains, so there is a limit that cannot be applied to cleaning mechanical devices or parts that require precision.

In order to compensate for these disadvantages, a dry ice washing apparatus for performing a washing operation using dry ice has been recently proposed. Such a dry ice washing device has a device body having an accommodation space for dry ice pellets formed therein and provided with various operation buttons and instruments, a connection hose connected to the device body to feed dry ice by pressure, and a terminal connected to the connection hose. It consists of a spray nozzle.

In the dry ice washing apparatus described above, when high-pressure compressed air is supplied from the compressed air supply line connected to the apparatus body, the dry ice pellets accommodated in the receiving space of the apparatus body are pressurized through a connection hose and then sprayed with a spray nozzle while the object to be cleaned is intended to be cleaned.

In this way, when dry ice pellets are sprayed on the object to be washed, the dry ice in the ultra-low temperature state rapidly cools the adhering foreign substances, which causes shrinkage and cracks. peeled and cleaned.

The dry ice cleaning device as described above has excellent cleaning efficiency and cleans using dry ice, so unlike the sandblasting method, there is an advantage that no foreign matter remains, but dry ice pellets in a cryogenic state of -78.5℃ Silver meets moisture and immediately freezes, so it cannot be used continuously, and the size of the receiving space of the device body is limited, so cleaning work cannot be performed for a long time.

In addition, in order to store a large amount of replenishment dry ice pellets for a long time, a separate storage space capable of maintaining a low-temperature environment is required, resulting in an increase in facility investment cost and unnecessarily occupying a large area of the production plant.

In order to solve this problem, Korean Patent Publication No. 10-2013-0064932 discloses a 'large-capacity dry ice pellet supply device'.

The present invention relates to a large-capacity dry ice pellet supply apparatus, and more particularly, to a large-capacity dry ice pellet supply apparatus capable of continuously performing washing operations by stably supplying dry ice pellets to the dry ice cleaning apparatus for a long period of time. will be.

The large-capacity dry ice pellet supply apparatus according to the present invention is a large-capacity dry ice pellet supply apparatus for supplying dry ice pellets to a dry ice washing apparatus. ; a conveying means installed inside the receiving body for discharging the dry ice pellets accommodated in the receiving space to the outside; and a driving means connected to generate and apply a driving force to the transfer means.

However, in the case of the above-described dry ice pellet supply device, there is a limitation in that the long-term storage of the dry ice pellets is difficult due to the insufficient insulation and heat shielding configuration of the device.

Therefore, in order to solve the above-mentioned problems, as a case for storing and supplying dry ice pellets, it is possible to maintain dry ice for a long time in a low temperature state by improving insulation and heat shielding performance, and with enhanced heat shielding properties. The need to develop a case is emerging.

The main object of the present invention is to provide a dry ice pellet case with improved storage performance for dry ice.

Another object of the present invention is to improve the structure of the case in order to further increase the thermal insulation properties.

Another object of the present invention is to contain air in the structure of the case so that the air contained therein can further enhance thermal insulation and heat shielding performance.

It is a further object of the present invention to provide an interlocking configuration between the air layer and the filler filled inside the container, thereby improving heat shielding and thermal insulation properties as well as providing a function of absorbing external impact.

In order to achieve the above object, a dry ice pellet case with enhanced heat shielding properties according to the present invention includes: a wall having an accommodation space; dry ice pellets accommodated in the receiving space; As being applied to the inner wall of the wall, a heat-shielding paint containing wollastonite (wollastonite); and a cover for opening and closing the receiving space of the wall.

Furthermore, the wall includes an outer wall and an inner wall having a predetermined thickness, and a space spaced apart from the outer wall and the inner wall, and at least one of the surface and the back surface of the outer wall is coated with an insulating paint containing an acrylic resin, , At least one of the surface and the back surface of the inner wall, a heat insulating paint containing wollastonite (wollastonite) and a thermal insulating paint containing an acrylic resin is applied, in the separation space, a heat insulating filler containing foamed urea; It is characterized in that the filling process.

In addition, the inner wall includes a plurality of micro-holes formed through the surface along the circumference, and the case is formed between the heat shielding filler and the inner wall, and contains air introduced from the accommodation space through the micro-holes. It is characterized in that it further comprises one heat shielding cold air layer.

Dry ice pellet case according to the present invention,

1) The long-term storage performance of dry ice pellets was improved by applying a heat-shielding paint to either the inner or outer wall of the wall to improve the heat-shielding performance,

2) The wall of the case is composed of a double structure and the insulation and heat shielding performance is maximized by filling the insulating filler between the walls of the double structure,

3) By forming micro-holes in the inner wall and forming a heat-shielding cold air layer between the filler and the inner wall, the cooled air is filled between the inner wall and the filler to further improve the insulation performance,

4) The filler forms an air layer, but by forming a bridge between the air layers to connect the air layers, there is an effect of increasing insulation and heat shielding properties and providing a cushioning effect against external impact.

1 is a conceptual diagram showing a schematic configuration of the dry ice pellet case of the present invention.
Figure 2 is a cross-sectional view of the case of the single structure of the present invention.
Figure 3 is a cross-sectional view of the case of the dual structure of the present invention.
Figure 4 is a conceptual diagram showing the configuration of the transport means of the present invention.
5 is a cross-sectional view showing a case including a heat shielding cold air layer of the present invention.
6 is a cross-sectional view showing the micro-holes included in the heat shielding cold air layer of the present invention.
7 is a conceptual diagram illustrating an enlarged heat shielding filler of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each drawing refer to like elements.

Figure 1 is a conceptual diagram showing a schematic configuration of the dry ice pellet case of the present invention, Figure 2 is a cross-sectional view of the case of the present invention.

Referring to FIGS. 1 and 2 , the dry ice pellet case 1 of the present invention is characterized in that it comprises a wall 100 , a heat-shielding paint, and a cover 200 .

The wall 100 forms the outer shape of the dry ice pellet case 1 of the present invention, and preferably has a rectangular parallelepiped shape and includes a receiving space 110 for accommodating the dry ice pellets therein. do.

The material of the wall 100 is not limited, but preferably made of a material such as high-strength engineering plastic to prevent excessive weight of the outer wall 120 itself while exhibiting a sufficient level of durability with thermal insulation properties. can

Examples of engineering plastics may include polycarbonate (PC), polyacetal (POM), modified polyphenylene oxide (mPPO), polybutylene terephthalate (PBT), etc., A material of the outer wall 120 may be used or a mixture of the above-mentioned materials may be used, and various engineering plastics in addition to the above-mentioned materials may be used as the material of the outer wall 120 .

In addition, in the receiving space 110 of the wall 100, dry ice pellets cut and pulverized to a predetermined size are stored, and the stored dry ice pellets are taken out and used, or as will be described later, they are transported to the outside through a transport means. It can also be used in conjunction with a blast device and the like.

In addition, at least one of the inner wall 130 and the outer wall 120 of the wall 100 may be coated with a heat-insulating paint containing wollastonite so that the surface thereof is coated. Preferably, the heat-shielding paint may be applied to the entire inner wall 130 and outer wall 120 of the wall 100, or may be applied to any one of the inner wall 130 and the outer wall 120 in consideration of economic aspects. have. When only heat-insulating properties are considered, most preferably, the heat-insulating paint is applied to the entire outer wall 120 and inner wall 130, and considering economic feasibility, the inner wall 130 of the wall 100, then the wall 100 A heat-shielding paint may be applied to the outer wall 120 of the

In addition, here, the inner wall 130 is, in other words, the inner circumferential surface, that is, the same side as the back surface, and may be referred to as the side surface of the receiving space 110, and the outer wall 120 is the outer circumferential surface, that is, the surface, in other words, the case (1). It can be said that the surface exposed to the outside of

The heat-shielding paint is characterized by containing wollastonite, which is a cyclosilicate of calcium, iron, and manganese, also called wollastonite, and includes both α-wollastonite and β-wollastonite. Such wollastonite has excellent heat insulation and heat shielding properties, and thus provides an effect of increasing heat shielding properties when included in heat shielding paints.

In addition, a cover 200 for opening and closing the accommodating space 110 is provided on one side of the wall 100 to open and close the accommodating space 110 through the cover 200, such a cover 200 is preferably It has a shape similar to the shape of the longitudinal section of the receiving space 110, and in the present invention, preferably, the shape of the case 1 may be close to a rectangular parallelepiped, so the cover 200 may also be provided in a rectangular shape.

In addition, a separate sealing member is further seated on the surface of the cover 200 on the side of the receiving space 110 and the surface of the cover 200 corresponding to the receiving space 110 in which the dry ice pellets are accommodated, so that the cover 200 is closed. It is also possible to maintain the airtightness of the receiving space 110 in the. Alternatively, a fitting member protruding from one side of the cover 200 in the shape of a longitudinal section of the receiving space 110 is further provided, so that when the cover 200 is closed, the fitting member is fitted and coupled to the longitudinal section of the receiving space 110 to accommodate the space Sealability to (110) can be further improved.

Furthermore, a hinge for fixing the cover 200 and one side of the wall 100 may be provided on one side of the cover 200 so that the cover 200 is connected to the wall 100 so that the cover 200 can be opened and closed based on the hinge. Also, a separate locking device 300 may be provided on one side of the cover 200 .

This locking device 300 can be applied in a variety of ways without limitation as long as the locking and unlocking between the cover 200 and the wall 100 can be smoothly performed. The device 300 may be provided in the cover 200 .

In addition, the cover 200 may be made of the same material as the wall 100, or the cover 200 has a double structure so that the surface exposed to the outside is made of the same material as the wall 100, and is in contact with the receiving space 110. Of course, it is also possible to increase the storage capacity of dry ice pellets as cotton is composed of insulating materials such as urea foam or styrofoam.

3 is a cross-sectional view of a dual structure case of the present invention.

Referring to FIG. 3 , the wall 100 may be formed of a wall 100 having a double structure rather than a wall 100 having a single structure. In this case, the wall 100 may include an outer wall 120 and an inner wall 130 having a predetermined thickness, and a space separating the outer wall 120 and the inner wall.

In this case, the wall 100 may be configured such that the outer wall 120 and the inner wall 130 having a predetermined thickness are spaced apart from each other with a space therebetween, or the outer wall 120 and the inner wall 130 are separated from each other. Of course, it is also possible to configure the case in the form of inserting the inner wall 130 into the outer wall 120 constituting the outer wall 120 is also possible.

Here, since there is no limitation on the thickness of the outer wall 120 and the inner wall 130, the thickness of the outer wall 120 and the inner wall 130 can be adjusted within a thickness range that can have sufficient thermal insulation properties. .

In addition, the outer wall 120 and the inner wall 130 may be made of engineering plastics like the material of the above-described wall 100 , but the materials of the outer wall 120 and the inner wall 130 may be configured differently. At this time, preferably, the outer wall 120 may be made of the same material as the engineering plastic as described above, and the inner wall 130 is made of Styrofoam or other heat insulating material, which is a conventional heat insulator. Of course, it is also possible to configure the ) with other materials.

In this case, the spaced space between the outer wall 120 and the inner wall 130 may be filled with a heat shielding filler 140 including foamed urea. Foamed urea (urea foam) is known as a material with excellent thermal insulation and waterproof properties, and when the heat shielding filler 140 is filled between the outer wall 120 and the inner wall 130, the receiving space 110 for accommodating the dry ice pellets. It is possible to prevent the cold air from escaping from the outside through the heat-insulating filler 140, which is an insulator, once more, so that the insulation can be further strengthened.

Here, the foamed urea constituting the heat-shielding filler 140 is foamed by using a curing agent and air to foam a urea resin made of urea (urea) and formalin, and is based on a low-cost and high-heat-resisting spray-type insulator.

In addition, it is characterized in that at least one of the front and back surfaces of the outer wall 120 constituting the wall 100 is coated with an insulating paint. can increase Here, the heat-insulating paint is preferably an acrylic resin-based water-based heat-insulating paint, and in order to increase the heat insulating properties, an acrylic resin as a base, but at least one of titanium dioxide powder, boron nitride, diatomaceous earth, and alumina powder may be added as a filler. .

In addition, the insulating paint may be most preferably applied to the entire surface and the back surface of the outer wall 120, but may be applied only to the back surface in consideration of economical efficiency. However, it is also possible that the insulating paint is applied only to the surface, and in order to increase the thermal insulation efficiency, the insulating paint is first applied to the entire surface and the back surface of the outer wall 120, and then to the back surface of the outer wall 120 Application is the next priority, and lastly, an insulating paint can be applied to the surface of the outer surface.

Furthermore, as described above, the inner wall 130 may be coated with a heat-shielding paint containing wollastonite, which is also preferably applied to at least one of the surface and the back surface of the inner wall 130 . may be coated. Furthermore, as described above, the outer wall 120 may be coated with a heat-insulating paint containing an acrylic resin, so the heat-insulating paint is mixed with the heat-insulating paint applied to the inner wall 130 and the heat-insulating paint is mixed with the heat-insulating paint. A coating may be applied and treated.

Alternatively, it is also possible to apply the heat-insulating paint first and then apply the heat-insulating paint to the upper surface, and conversely, it is also possible to apply the heat-insulating paint and then apply the heat-insulating paint to the upper surface.

At this time, it can be said that the application of the heat-shielding paint and the heat-insulating paint is also most preferable to be applied to both the surface and the back of the inner wall 130. Of course, it may be applied, or the heat-shielding paint and the heat-insulating paint may be applied only to the back surface of the inner wall 130 .

Figure 4 is a conceptual diagram showing the configuration of the transport means of the present invention.

4, since the dry ice pellet case 1 of the present invention can be used for supplying dry ice pellets to the dry ice washing apparatus as in the above description, for this purpose, the case 1 of the present invention ) may further include a transfer means 150 for discharging the dry ice pellets accommodated in the accommodation space 110 to the outside, and a motor for providing driving force to the transfer means 150 .

The conveying means 150 may preferably include a gutter device 160 serving as a passage for moving the dry ice pellets, and a screw 170 for discharging the dry ice pellets to the outside. In this case, the gutter device 160 and the screw 170 may be manufactured using a pipe and a round bar molded using a resin having excellent rigidity and excellent thermal insulation properties at very low temperatures.

The gutter device 160 is disposed across the receiving space 110 of the inner wall 130 , and an inlet for introducing dry ice pellets is formed thereon. In addition, the gutter device 160 may be formed in a cylindrical shape having a hollow, and both ends may be inserted into the inner wall 130 to face each other with the receiving space 110 therebetween. The gutter device 160 may be hermetically fixed to one side of the inner circumferential surface of the inner wall 130 , and through this, it may be hermetically maintained with the outside.

In addition, in the case of the screw 170, the dry ice pellets can be discharged to the outside by being inserted into the gutter device 160 and rotating, and the screw 170 can be rotated by applying a driving force by a motor. In the case of a motor, it is preferable that an output shaft is connected to one end of the screw 170, and the dry ice pellets are discharged to the outside by rotating the screw 170 to form a dry ice washing device as described above. It is possible to use the dry ice pellet case (1) of the present invention.

In addition, a transfer plate 180 may be mounted on one side of the gutter device 160 , so that the dry ice pellets can be guided to the transfer means 150 via the transfer plate 180 .

In addition, the case 1 of the present invention may further include handles 400 mounted on both sidewalls of the outer wall 120 to hold the handle 400 and enable movement of the case 1 . In the case of such a handle 400, it may be preferably provided with a hinge at the end to be fixed through the hinge, or it may have a simple structure in which the end of the handle 400 is fitted to the side wall of the outer wall 120. . Alternatively, the handle 400 itself is formed to protrude from one side of the outer wall 120 , and of course, it is also possible that the handle 400-outer wall 120 has an integrated structure.

Therefore, it goes without saying that the handle 400 can be gripped and the case 1 can be easily moved even in a state in which the dry ice pellets are accommodated through the case 1 further including the handle 400 .

5 is a cross-sectional view illustrating a case including a heat shielding cold air layer according to the present invention.

Referring to FIG. 5 , the inner wall 130 of the present invention may include a plurality of fine through-holes 131 formed through the surface along the circumference. The fine through-holes 131 may be formed through the heat shielding filler 140 along the circumferential surface of the inner wall 130 .

When such a fine through hole 131 is formed, the cold air of the receiving space 110 is introduced into the heat shielding filler 140 through the fine through hole 131 , and the introduced cold air is trapped in the heat shielding filler 140 and easily outside. Since it cannot escape, it is possible to increase the cooling effect on the heat shielding filler 140 and further enhance the storage of the dry ice pellets accommodated in the accommodating space 110 through this.

In addition, at this time, in addition to the method of filling the entire space between the outer wall 120 and the inner wall 130 with the heat shielding filler 140, the heat shielding cold layer 500 is further included between the heat shielding filler 140 and the inner wall 130. By doing so, the cold air discharged through the above-described fine through-holes 131 may be configured to cool the air in the heat shielding cold air layer 500 to increase the heat insulation and heat shielding effect using the cold air.

The heat shielding cold air layer 500 is formed in the space between the heat shielding filler 140 and the inner wall 130, and as can be seen from the cross-sectional view, the outer wall 120 - the heat shielding filler 140 - the heat shielding cold air layer 500 - It is configured in the order of the inner wall 130 .

Therefore, the air including the cold air introduced from the receiving space 110 through the fine through-hole 131 is introduced into the heat shield cold air layer 500 so that the heat shield cold air layer 500 is maintained in a cooled state, and this cold air is foamed urea. It is shielded from being leaked to the outside by the included heat shielding filler 140 , so that one more insulating layer is formed through the cooled air.

In addition, the term "air introduced from the accommodation space 110" refers to the gas introduced from the accommodation space 110. In this case, "air" refers to air having a higher concentration of carbon dioxide generated due to the cooling of dry ice than outside. can be said

Accordingly, the cooled air having a high concentration of carbon dioxide as described above constitutes the heat shielding cold air layer 500 , and at the same time adding a thermal insulation configuration through the air, and at the same time, through the cold air generated inside the accommodation space 110 , the entire case 1 is heated. It can be cooled once again, which can further increase the storage efficiency of the dry ice pellets.

6 is a cross-sectional view illustrating micro-holes included in the heat shielding cold air layer of the present invention.

Furthermore, as can be seen with reference to FIG. 6 , in the case of the micro-holes 131 penetrating through the surface of the inner wall 130 , the diameter decreases as it progresses toward the heat shielding filler 140 . That is, cold air may escape from the receiving space 110 through the fine through-hole 131 , but the air, which is close to the heat-shielding filler 140 and maintained for a long time in the heat-shielding cold air layer 500 , is relatively warm again. Backflow into the accommodation space 110 through the through hole 131 can be prevented.

Therefore, through such a configuration, the air with a relatively high temperature staying for a long time on the side of the heat shielding filler 140, that is, in a state close to the outer wall 120, is prevented from flowing back into the receiving space 110 through the micro through hole 131. While it is possible to prevent the temperature of the receiving space 110 from rising relatively, the improvement in thermal insulation performance and the cooling effect through the heat shielding cold air layer 500 can be expected as it is.

7 is a conceptual diagram illustrating an enlarged heat shielding filler of the present invention.

Referring to FIG. 7 , the heat shielding filler 140 also includes a plurality of vents 141 , so that the air of the heat shielding cold air layer 500 is introduced into the vents 141 so that the vents 141 cause air. can contain. In addition, each of the ventilation holes 141 may be connected to each other one by one, or through a bridge 142 (bridge) in a multi-connection type to enable internal communication.

The vents 141 and the bridge 142 included in the heat shielding filler 140 can serve as both a role of forming an air layer in order to increase thermal insulation performance, and at the same time, the case 1 is subjected to an external impact. It is provided to provide a cushioning function against the impact applied to the case.

Therefore, the air introduced into the heat shielding cold air layer 500 from the receiving space 110 through the fine through-hole 131 is introduced into the heat-shielding filler 140 through the ventilation hole 141 and the bridge 142, and the heat-shielding filler ( 140) By containing air inside, it is possible to expect improvement in thermal insulation performance by containing air, as well as when an impact is applied from the outside of the case 1, that is, when an impact is transmitted to the outer wall 120. Dry ice accommodated in the accommodating space 110 by the impact applied from the outside by absorbing the impact by dispersing the impact to the air layer including the vent 141 and the bridge 142 included in the heat shielding filler 140 It is possible to prevent the pellets from breaking.

In addition, as described above, the heat-shielding paint of the present invention is characterized in that it contains wollastonite, most preferably 45 to 60 parts by weight of acrylic resin, 10 to 20 parts by weight of titania powder, 10 to 20 parts by weight of airgel. parts, it may consist of a composition comprising 5 to 10 parts by weight of calcium carbonate, and 1 to 10 parts by weight of wollastonite.

Acrylic resin can also be referred to as an acrylic emulsion, and is a resin with excellent adhesion. Basically, it may be composed of an acrylic acid ester or a methacrylic acid ester, further comprising an unsaturated carboxylic acid, an acrylic monomer, and the like. At least one of acrylic acid, methacrylic acid, crotonic acid, itaconic acid, and maleic acid may be used as the unsaturated carboxylic acid. As the acrylic monomer, at least one of acrylonitrile, acrylamide, N-hydroxyacrylamide, N-butoxy methylacrylamide, styrene, and vinyl acetate may be used.

As described above, wollastonite has a low thermal conductivity and excellent thermal insulation and heat shielding properties.

Because titania powder has excellent hiding power, it is generally used as a water-based paint. Titania powder has low thermal conductivity and excellent thermal insulation properties. In addition, the mixed use of titania powder can bring a greater advantage in terms of economy than the use of wollastonite alone.

Airgel is a compound word of 'aero' meaning air and 'gel' meaning three-dimensional network structure. It is a highly porous nanostructure obtained by replacing the liquid in the gel structure with air while maintaining the gel structure formed during the synthesis. is known as It has high insulation and eco-friendliness, so it has a high application range, and it has the effect of preventing the deterioration of insulation because it can compensate for the disadvantage that the insulation performance may be weakened by moisture through moisture absorption of airgel.

Calcium carbonate is a carbonate of calcium, which is the main component of rocks and is also the main raw material for cement. It is used as various neutralizing agents in steel making and building materials, and is known as a material with excellent economical efficiency. It can be used to increase the strength of the film when added to heat-shielding paint.

The heat-shielding paint comprising the above-described composition is characterized in that it has excellent film-forming ability and high waterproofness, excellent heat-shielding and heat-insulating properties, and has both heat-shielding and heat-insulating properties, and has an advantage of high film strength.

Therefore, in order to explain the physical properties of such a heat-shielding paint, the evaluation results of Examples and Comparative Examples will be compared and described. Examples consist of Examples 1 to 3, which are preferred examples including the component composition of the heat-shielding coating composition of the present invention, Comparative Example 1 is a coating composition without wollastonite, and Comparative Example 2 is a known It is a paint composition.

<Example 1>

50 g of acrylic resin, 15 g of titania powder, 15 g of airgel, 10 g of calcium carbonate, and 10 g of wollastonite were mixed to prepare the heat-shielding paint of the present invention.

The paint of Example 1 is applied to the surface of the structure having a width of 1 meter and a thickness of 1 cm, dried and exposed to a cryogenic environment (-78.5 ° C.) Confirmed.

<Example 2>

50 g of acrylic resin, 20 g of titania powder, 10 g of airgel, 10 g of calcium carbonate, and 10 g of wollastonite were mixed to prepare the heat-shielding paint of the present invention.

The paint of Example 2 is applied to the surface of the structure having a width of 1 meter and a thickness of 1 cm, dried and exposed to a cryogenic environment (-78.5 ° C.) Confirmed.

<Example 3>

50 g of acrylic resin, 10 g of titania powder, 20 g of airgel, 10 g of calcium carbonate, and 10 g of wollastonite were mixed to prepare the heat-shielding paint of the present invention.

The paint of Example 3 is applied to the surface of the structure having a width of 1 meter and a thickness of 1 cm, dried and exposed to a cryogenic environment (-78.5 ° C.) Confirmed.

<Comparative Example 1>

50 g of acrylic resin, 15 g of titania powder, 15 g of airgel, and 20 g of calcium carbonate were mixed to prepare the heat-shielding paint of the present invention.

Comparative Example 1 can be said to replace wollastonite with calcium carbonate performing a simple filler function.

The paint of Comparative Example 1 was applied to the surface of the structure having a width of 1 meter and a thickness of 1 cm, dried and exposed to a cryogenic environment (-78.5 ° C.) Confirmed.

<Comparative Example 2>

25 g of acrylic resin, 25 g of talc, 10 g of calcium carbonate powder, and 40 g of purified water were mixed and stirred at high speed to prepare a paint composition.

In other words, Comparative Example 2 may be a known paint composition, and does not include titania powder, airgel, and wollastonite, which are materials exhibiting heat-shielding properties.

The paint of Comparative Example 2 was applied to the surface of the structure having a width of 1 meter and a thickness of 1 cm, dried and exposed to a cryogenic environment (-78.5 ° C.) Confirmed.

6 is a table showing the evaluation results of the present invention.

Referring to FIG. 6 , it can be seen that the coating layer made of the heat-shielding paint prepared in Examples 1 to 3 of the present invention has superior heat-insulating properties compared to Comparative Examples 1 to 2.

When Examples 1 to 3 and Comparative Example 1 are compared, it can be understood that the temperature difference of the back surface is large depending on whether or not wollastonite is added, thereby confirming the difference in heat shielding properties according to the addition of wollastonite.

In the case of comparison of Examples 1 to 3, there was a difference in the weight ratio of titania powder and airgel, and in a dry environment, it was confirmed that there was no significant difference in heat shielding properties depending on the difference in addition amount of titania powder and airgel.

Comparing Comparative Examples 1 to 2, Comparative Example 1 is an example including a heat insulating material such as titania powder and airgel, and Comparative Example 2 can be said to include only a simple inorganic filler, titania powder and airgel It can be seen that there is a difference in heat shielding properties according to the addition.

Therefore, as the heat shielding property is increased when the heat shielding paint of the present invention is added, the dry ice pellet case 1 of the present invention coated with the heat shielding paint on the surface of the outer wall 120 is applied to the conventional dry ice pellet case 1 Compared to that, it can be expected that the storage performance for dry ice pellets can be improved. In other words, if the conventional dry ice pellet case 1 can store the dry ice pellets in a solid state for about 3 to 7 days, the dry ice pellet case 1 of the present invention can provide dry ice for 5 to 14 days. The pellet can be stored in a solid state.

Furthermore, the heat-shielding paint of the present invention may further include 1 to 10 parts by weight of a heat-shielding enhancer including aluminosilicate nanoparticles, and the heat-shielding paint is 45 to 60 parts by weight of an acrylic resin, 10 to 20 parts by weight of titania powder , 10 to 20 parts by weight of airgel, 5 to 10 parts by weight of calcium carbonate, 1 to 10 parts by weight of wollastonite, it may be a composition comprising 1 to 10 parts by weight of the heat shielding enhancer.

Aluminosilicate nanoparticles, which are the active ingredients of the heat-shielding enhancer, are a substance obtained by substituting a part of silicon constituting the silicate with aluminum, and are abundantly present in nature in the form of minerals. It has a moisture absorption function for moisture, and at the same time, the nano-sized aluminosilicate forms a fine insulating film on the surface of the coating layer of the heat-shielding material, providing excellent thermal insulation effect and prevention of condensation that may occur on the surface of the inner case at the same time. can perform
As described so far, the configuration and action of the dry ice pellet case with enhanced heat shielding properties according to the present invention have been expressed in the above description and drawings, but this is merely an example and the spirit of the present invention is not limited to the above description and drawings. It goes without saying that various changes and modifications are possible within the scope of the present invention without departing from the technical spirit of the present invention.

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1: case 100: wall
110: accommodation space 120: outer wall
130: inner wall 131: fine hole
140: heat shielding filler 141: ventilation holes
142: bridge 150: transport means
160: gutter device 170: screw
180: transfer plate 200: cover
300: lock 400: handle
500: heat insulation cold air layer

Claims (9)

As a dry ice pellet case with enhanced thermal insulation,
a wall having an accommodation space for accommodating dry ice pellets;
a heat-shielding paint applied to at least one of an inner wall and an outer wall of the wall;
Including; a cover for opening and closing the receiving space of the wall;
The heat-insulating paint is
45 to 60 parts by weight of acrylic resin, 10 to 20 parts by weight of titania powder, 10 to 20 parts by weight of airgel, 5 to 10 parts by weight of calcium carbonate, 1 to 10 parts by weight of wollastonite, including aluminosilicate nanoparticles Dry ice pellet case, characterized in that it comprises 1 to 10 parts by weight of a heat shielding strengthening agent. The method of claim 1,
The wall is
An outer wall and an inner wall having a predetermined thickness, and a spaced space apart from the outer wall and the inner wall,
At least one of the surface and the back surface of the outer wall,
An insulating paint containing an acrylic resin is applied,
At least one of the surface and the back surface of the inner wall,
The heat-insulating paint and the heat-insulating paint comprising an acrylic resin are applied,
In the separation space,
Dry ice pellet case, characterized in that the filling treatment; 3. The method of claim 2,
The inner wall is
A plurality of micro-holes formed through the surface along the perimeter,
The case is
The dry ice pellet case, which is formed between the heat shielding filler and the inner wall, further comprising a heat shielding cold layer containing air introduced from the receiving space through the fine through hole. 4. The method of claim 3,
The micro-pores are
Dry ice pellet case, characterized in that the diameter decreases as it progresses toward the heat shielding filler. 4. The method of claim 3,
The heat shielding filler,
Dry, characterized in that it includes a plurality of vents, and includes a bridge connecting each of the vents in a state in which the air introduced from the accommodation space through the fine vias is contained in the vents. Ice pellet case. delete delete delete delete

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