JP5944299B2 - Pressurized bubble-containing dry ice, and pressurized bubble-containing dry ice production device - Google Patents

Description

  The present invention relates to dry ice containing pressurized bubbles and an apparatus for manufacturing the same.

  Conventionally, dry ice is known as a cryogen that cools required products, and a production material that produces smoke by being immersed in water. In recent years, dry ice added with chemicals as described in JP-T-2009-525172 Blasting dry ice is also being tried.

  Such dry ice, as disclosed in JP-A-11-116225 and JP-A-7-61805, generates liquefied carbon dioxide into a snow case to generate snow-like dry ice and carbon dioxide gas, Carbon dioxide gas is released to the outside of the snow case, and the remaining snow-like dry ice is compressed with a piston to produce block-like dry ice inside the snow case or extruded from a through hole provided in a part of the snow case. Thus, a method for producing cylindrical dry ice has been carried out.

  However, the conventional dry ice gradually sublimated from the surface in the air, and the dry ice did not move when it sublimated. Thereby, it was a thing with low diffusibility and directivity.

Special table 2009-525172 JP 11-116225 A JP-A-7-61805

  SUMMARY OF THE INVENTION An object of the present invention is to provide dry ice that moves in a manner that does not exist in conventional dry ice, and an apparatus for manufacturing the dry ice.

  The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention contains pressurized bubbles exceeding the atmospheric pressure due to a gas having a boiling point of less than -78.5 ° C, and the dry ice between the dry ice surface and the pressurized bubbles is gradually formed by sublimation. The dry ice is characterized in that it sublimes and bursts when the pressurized bubbles cannot be maintained . This is because the dry ice between the surface of the dry ice and the pressurized bubbles gradually sublimates due to sublimation, and the dry ice bursts by bursting when the pressurized bubbles cannot be maintained. Further, dry ice containing pressurized bubbles is produced by mixing and compressing a gas having a boiling point of less than −78.5 ° C. with a dry ice production apparatus equipped with a gas supply passage for bubbles.

    According to the first aspect of the present invention, there is provided dry ice that moves by splashing with dry ice, characterized by containing pressurized bubbles exceeding the atmospheric pressure of a gas having a boiling point of less than -78.5 ° C. . Thereby, high diffusibility and performance can be provided.

    According to the second aspect of the present invention, the gas having a boiling point of less than −78.5 ° C. is any one of nitrogen, air, oxygen, hydrogen, or a mixture thereof, thereby providing dry ice that moves and jumps. In addition to providing high diffusibility and performance, the effect can be characterized by each gas.

  According to the invention according to claim 3, by providing an additive to a gas having a boiling point of less than -78.5 [deg.] C., it is possible to provide dry ice that moves and jumps, and to have high diffusibility and performance. In addition, the effect of the additive can be characterized.

  According to the invention which concerns on Claim 4, the liquefied carbon dioxide supply path which supplies liquefied carbon dioxide, the liquefied carbon dioxide supplied from the said liquefied carbon dioxide supply path is injected inside, and snow-like dry ice and carbon dioxide gas In a dry ice production apparatus comprising a snow case that generates carbon dioxide, a gas discharge path that discharges carbon dioxide gas from the snow case to the outside, and a piston that compresses and molds snow-like dry ice in the snow case, the boiling point in the snow case By providing a gas supply path for bubbles that supplies a gas of less than −78.5 ° C., pressurized bubble-containing dry ice can be produced.

  According to the invention which concerns on Claim 5, the pressure state of the pressurization bubble in pressurization bubble containing dry ice can be adjusted by providing the gas pressure adjustment discharge path which provided the pressure control valve. Thereby, the strength to fly can be adjusted.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing of the pressurization bubble containing dry ice by this invention. BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing of Example 1 of the dry bubble ice containing pressurized air by this invention. The schematic explanatory drawing of Example 2 of the pressurization bubble containing dry ice by this invention. Schematic explanatory diagram of a reference example of a conventional dry ice production device The schematic explanatory drawing of Example 3 of the pressurized bubble dry ice manufacturing apparatus by this invention. Schematic explanatory drawing of Example 4 of the pressurized bubble dry ice manufacturing apparatus by this invention. 2 of schematic explanatory drawing of Example 4 of the pressurized bubble dry ice manufacturing apparatus by this invention. Schematic explanatory drawing of Example 5 of the pressurized bubble dry ice manufacturing apparatus by this invention.

  The pressurized bubble-containing dry ice 1 shown in FIG. 1 contains a pressurized bubble 2 that exceeds the atmospheric pressure of a gas having a boiling point of less than −78.5 ° C. inside. The dry ice between the surface of the dry ice and the pressurized bubbles gradually sublimates due to sublimation, and the dry ice bounces off by bursting when the pressurized bubbles cannot be maintained.

  Example 1 of dry ice containing pressurized air bubbles shown in FIG. 2 is an example of use when cooling the cold-requiring product 4 loaded in the cold insulation container 3, and when normal dry ice is installed, the dry ice is installed at the installation part. However, it is difficult to cool a cold product that is far from dry ice and does not diffuse into the cold storage container, resulting in uneven cooling. However, when the pressurized bubble-containing dry ice 1 is installed, the pressurized bubble-containing dry ice bounces off and diffuses widely into the cold insulation container 3, and the product 4 requiring cooling is cooled evenly.

  In the said Example 1, if the bubble of the pressurization bubble containing dry ice 1 is air, it can manufacture cheaply. Further, if the air bubble is nitrogen, if the cooling required product 4 is a cooling required product causing deterioration due to oxygen, the oxygen in the container is expelled together with the carbon dioxide generated from the dry bubble-containing dry ice 1 to deteriorate the cooling required product. Can be prevented. The above-mentioned refrigerated products that cause deterioration due to oxygen include foods, chemical substances, metal powders, and the like, and causes of deterioration include oxidation and propagation of germs due to oxygen. Furthermore, when additives such as preservatives, insecticides, and fragrances are mixed in the bubbles, the additives diffuse together with the pressurized bubble-containing dry ice 1, and the effect can be obtained without unevenness.

  Example 2 of dry air containing pressurized air bubbles shown in FIG. 3 is an example of use in production, which attracts attention at events due to the appearance of dry ice 1 containing air bubbles, and effects such as shooting movies and television Can be used. In this case, it is desirable to ensure safety by placing a transparent resin plate 6 between the viewer / photographer 5 and the pressurized bubble-containing dry ice 1.

  In Example 2, it can be observed that the bubbles of the pressure-containing dry ice 1 bounce off with air or nitrogen. In addition, when the bubbles are hydrogen, they can be burned by providing an ignition source, and the performance can be further improved. Furthermore, by mixing this with dry ice containing pressurized air bubbles containing oxygen, the combustion can be intensified and the effect of production can be improved.

  FIG. 4 shows a reference example of a conventional dry ice production apparatus. The dry ice manufacturing apparatus 10 supplies liquefied carbon dioxide into the snow case 20 from the liquefied carbon dioxide supply path 30 by opening the liquefied carbon dioxide supply valve 31. At that time, the liquefied carbon dioxide is cooled by adiabatic expansion, part of it becomes snow-like dry ice, remains inside the snow case, and the rest becomes gas and is discharged from the gas discharge path 50. Thereafter, the liquefied carbon dioxide supply valve 31 is closed and the piston 23 is pushed into the snow case by the hydraulic device 22 to compress the snow-like dry ice. The compressed snow-like dry ice is pushed out from a through hole 21 provided in a part of the snow case, and becomes pellet-like dry ice. Although not shown, when the opening and closing part is provided in the snow case without providing a through hole, it can be manufactured as block-shaped dry ice. Since the carbon dioxide gas remaining in the snow dry ice during compression is pressurized at a low temperature, it changes from gas to solid and becomes part of the dry ice and does not remain as bubbles. The piston can be retracted after stopping the pushing operation, and the production can be continued by repeating from the supply of liquefied carbon dioxide.

  Example 3 shown in FIG. 5 is a pressurized bubble-containing dry ice production apparatus A for carrying out the present invention. The difference from the reference example of the conventional dry ice production apparatus is that the boiling point − The bubble gas supply valve 31 is opened at the point of providing the bubble gas supply path 40 for supplying a gas of less than 78.5 ° C., and the compression of snow dry ice is started from the start of supply of liquefied carbon dioxide. Bubbles are generated in the snow dry ice by supplying the bubble gas into the snow case in a part or all of the steps up to. Thereafter, when the snow-like dry ice is compressed, the bubbles are also compressed to become pressurized bubbles, and the pellet-shaped pressurized bubble-containing dry ice is pushed out from the through holes 21.

  In Example 3, the gas for bubbles is supplied from a reservoir or a container. However, in the case of air, it can also be supplied from the air, and in the case of nitrogen, it can be supplied from the air via a nitrogen production apparatus. it can. Further, a pump or a compressor may be used for applying pressure for supply, but this may be used when the self-pressure of the reservoir or container storing the gas for bubbles is sufficient.

  A fourth embodiment shown in FIG. 6 is a pressurized bubble-containing dry ice manufacturing apparatus B for carrying out the present invention, and is different from the third embodiment in that a pressure regulating gas discharge path 60 having a pressure regulating valve 61 interposed therebetween. The pressure state of the pressurized bubbles can be adjusted by adjusting the pressure in the snow case when supplying the gas for bubbles. In this case, when the pressure regulating valve is set so that the pressure in the snow case is increased, the pressure of the pressurized bubbles in the produced pressurized bubble-containing dry ice is also increased, and the pressurized bubble-containing dry ice is more strongly It will start to fly.

  In the fourth embodiment, when branching from the gas discharge path 50 and connecting the pressure adjusting gas discharge path 60, an on-off valve 51 is installed in the gas discharge path 50, and the on-off valve is closed when supplying the gas for bubbles. The pressure inside the snow case can be maintained. Further, when the pressure adjusting gas discharge path 60 is directly connected to the snow case 20, a shut-off valve 51 can be similarly installed in the gas discharging path 50. However, as shown in FIG. By connecting the gas supply path 40 to the snow case in front of the gas discharge path 50 in the direction of travel of the piston 23, the piston 23 is connected between the gas discharge path, the pressure adjusting gas discharge path, and the bubble gas supply path. The gas discharge path can also be closed by moving to.

  A fifth embodiment shown in FIG. 8 is a pressurized bubble-containing dry ice manufacturing apparatus C for carrying out the present invention. The difference from the third and fourth embodiments is that the snow case 20 is opened and closed without providing a through hole. By providing the plate 24, the snow case can be opened and closed, and after the snow dry ice is compressed by the piston 21, the open / close plate is lowered and taken out to produce block-shaped pressurized bubble-containing dry ice. Can do.

DESCRIPTION OF SYMBOLS 1 Pressurized bubble containing dry ice 2 Pressurized bubble 3 Cold storage container 4 Cooling goods 5 Visitor 6 Transparent resin board 10 Dry ice production apparatus 11 Pressurized bubble dry ice production apparatus A
12 Pressurized bubble dry ice production equipment B
13 Pressurized bubble dry ice production equipment C
DESCRIPTION OF SYMBOLS 20 Snow case 21 Through-hole 22 Hydraulic device 23 Piston 24 Opening / closing plate 30 Liquefied carbon dioxide supply path 31 Liquefied carbon dioxide supply valve 40 Gas supply path for bubbles 41 Gas supply valve for bubbles 50 Gas discharge path 51 Open / close valve 60 Pressure adjustment gas discharge Path 61 Pressure regulating valve

Claims (5)

Contains pressurized bubbles exceeding the atmospheric pressure due to a gas having a boiling point of less than 78.5 ° C, and the dry ice between the dry ice surface and the pressurized bubbles gradually sublimated by sublimation, and the pressurized bubbles cannot be maintained. Dry ice, which sometimes bursts . 2. The dry ice according to claim 1, wherein the gas having a boiling point of less than −78.5 ° C. is nitrogen, air, oxygen, hydrogen, or a mixture thereof. The dry ice according to claim 1, wherein an additive is mixed in the gas having a boiling point of less than -78.5 ° C. A liquefied carbon dioxide supply path for supplying liquefied carbon dioxide, a snow case for injecting liquefied carbon dioxide supplied from the liquefied carbon dioxide supply path into the interior to generate snow-like dry ice and carbon dioxide gas, and carbon dioxide gas In a dry ice manufacturing apparatus comprising a gas discharge path for discharging the snow from the snow case to the outside and a piston for compressing and molding snow-like dry ice in the snow case, gas having a boiling point of less than -78.5 ° C. is supplied to the snow case An apparatus for producing dry ice containing pressurized air, comprising: a gas supply passage for air bubbles, wherein the compressed dry ice contains air bubbles having a boiling point lower than −78.5 ° C. and exceeding atmospheric pressure . The dry ice manufacturing apparatus according to claim 4, further comprising a gas pressure adjusting discharge path connected to a snow case or a gas discharging path through a pressure adjusting valve.

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