JP2018201550A - Refrigerant pack and cooling method - Google Patents

Abstract

To provide a refrigerant pack and a cooling method which can directly cool a predefined location by a refrigerant, can maintain a cooling effect of the refrigerant for a long period, and can cool a whole body of a wearer.SOLUTION: A refrigerant pack 1 and a cooling method are provided for cooling a worker who works in a protective suit 2. The refrigerant pack 1 is fitted inside the protective suit 2, the refrigerant pack including a dry ice stored in a container provided with a plurality of holes thereon and a refrigerant provided between the dry ice and a human body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cryogen pack and a cooling method.

  When working in a high-temperature environment, measures against heat stroke may be taken by wearing a cryogen packed with water and a superabsorbent resin. It is known that if the lymphatic part of the body is intensively cooled by a cryogen, it is effective as a countermeasure against heat stroke. It should be noted that, in a general high-temperature environment where the temperature is around 30 ° C., it is desirable to perform the work in a cycle of 1 to 1.5 hours in a state in which a cooling agent is worn.

  When working with radioactive materials, contaminated water, waste, etc., wear protective clothing, protective clothing, dust-proof clothing, etc. (hereinafter simply referred to as “protective clothing, etc.”) that are not breathable. The temperature may be around 40 ° C. For this reason, when wearing protective clothing or the like, the cooling effect of the cryogen was expected only for about 30 minutes. In addition, dry ice may be used for the purpose of maintaining the cooling effect for a relatively long time. For example, Patent Literature 1 discloses a cooling pack that includes dry ice accommodated in a container made of a plastic plastic member and a package that wraps the container.

Utility Model Registration No. 3202282

In the conventional cooling method using dry ice, from the viewpoint of preventing frostbite, the body cannot be directly cooled by dry ice (coolant), and the dry air generated by the sublimation of dry ice It was common to cool the surroundings.
The present invention makes it possible to directly cool a predetermined position with a cooling agent, and to maintain the cooling effect of the cooling agent for a longer time, and to cool the wearer's whole body. It is an object of the present invention to propose a cooling agent pack and a cooling method that are made possible.

In order to solve the above-mentioned problem, a cold pack of the present invention includes dry ice stored in a container provided with a plurality of holes, and a cold pack interposed between the container and the human body. It is characterized by being. The container is preferably a bag formed of a resin film.
According to such a cryogen pack, a predetermined position (for example, a lymph portion) can be effectively cooled by the cryogen. In addition, since the cooling agent is cooled by dry ice, the cooling effect of the cooling agent lasts for a long time. Furthermore, since a plurality of holes are formed in the container containing the dry ice, a cooling effect by the cold air discharged from the holes can be expected.

Moreover, the cooling method of the worker who works while wearing the protective clothing (including protective clothing and dust-proof clothing) according to the present invention includes a container having a plurality of holes containing dry ice inside the protective clothing. While being worn, a cooling agent is provided on the human body side of the container.
According to such a cooling method, the wearer's whole body is cooled in the protective clothing by the cold air (carbon dioxide gas) accompanying the sublimation of dry ice. Moreover, while a predetermined | prescribed position can be cooled with a cold insulating agent, the cooling effect of a cold insulating agent continues with dry ice for a long time. In addition, since the wearer does not come into direct contact with dry ice, there is no fear of frostbite due to dry ice.
In addition, if the exhaust port is formed in the lower part (foot etc.) of the said protective clothing, the carbon dioxide gas generated by the sublimation of dry ice can be exhausted.

  According to the cryogen pack and the cooling method of the present invention, it is possible to directly cool a predetermined position by the cryogen, and to maintain the cooling effect of the cryogen for a longer time, and The wearer's whole body can be cooled.

It is a figure which shows an example of the usage condition of the cooler pack of this embodiment. It is a perspective view which shows the cooler pack of this embodiment.

In the present embodiment, as shown in FIG. 1, a cold pack 1 worn by a worker who wears protective clothing (including protective clothing and dust-proof clothing) 2 and a dust-proof mask 21 and the like, and this cold insulation. A cooling method using the agent pack 1 will be described.
The protective clothing 2 is formed of a non-woven fabric of polyethylene fiber and covers the whole body except for the hands, feet, and face of the worker. The material constituting the protective clothing 2 and the shape of the protective clothing are not limited. The face portion of the worker is covered with a dust mask 21 or the like. The fastener portion of the protective clothing 2, the boundary portion between the sleeve and the glove 22, the boundary portion between the hem and the shoe 23, and the like are sealed with a chemical tape 24 or the like. Moreover, in this embodiment, a feather (not shown) shall be worn outside the protective clothing 2. That is, in this embodiment, the entire body of the worker is covered with the protective clothing 2 and the like so that the worker does not come into contact with radiation, dust, sewage, or the like. The sealing method is not limited to chemical tape sticking.

  As shown in FIG. 2, the cold pack 1 according to the present embodiment includes dry ice 3 and a cold pack 4. The body temperature that has risen in the protective clothing 2 is cooled by mounting the cold pack 1 inside the protective clothing 2. The dry ice 3 and the cooling agent 4 may be used in a state of being inserted together in a case (bag or the like) formed of rubber, cloth or the like, or may be used by overlapping individual items.

  The dry ice 3 is block-like, plate-like, or granular solid carbon dioxide. In this embodiment, about 250 g of dry ice 3 is used in one cold-reserving agent pack 1 assuming that it is used for about 2 to 3 hours. In addition, the magnitude | size (amount) of the dry ice 3 is not limited, What is necessary is just to determine suitably according to use time.

  The dry ice 3 is accommodated in a bag (container) 5 formed of a resin film. The bag 5 is formed with a plurality of small holes 6 (for example, a diameter of 0.2 mm and a pitch of 3 to 5 cm) at each corner and the like, so that cold air generated by sublimation of the dry ice 3 can be discharged to the outside. Has been. In this embodiment, the bag 5 is formed of a polyethylene film. The position, number, size, shape, and the like of the holes 6 formed in the bag 5 are not limited, and may be appropriately formed. The material constituting the bag 5 is not limited to polyethylene as long as it can be deformed following the deformation of the dry ice 3 and has a material with excellent heat conductivity. Other resin films may be used. Moreover, the bag 5 does not necessarily need to be formed with the resin film, for example, may be formed with paper, a woven fabric, and a nonwoven fabric. Furthermore, the container 5 for storing the dry ice 3 does not necessarily have a bag shape.

  The cold insulator 4 is made of water, a highly water-absorbent resin, etc., sealed in a cold insulator container, and is interposed between the dry ice 3 and the human body. The cryogen 4 used in the present embodiment is sealed in a bag-shaped cryogen container, but the cryogen container is limited to a bag as long as the contents can be sealed and the heat conductivity is excellent. Is not to be done.

The cold pack 1 is worn inside the protective clothing 2. In this embodiment, it mounts | wears so that it may laminate | stack in order from the human body side on the cold-retaining agent 4 and the dry ice 3 in the position corresponding to lymph parts, such as a wearer's neck, armpit, chest, abdomen, and back. At this time, the cold insulating agent 4 is brought into contact with the wearer's skin through the underwear. The cold pack 1 may be affixed to the underwear or may be affixed to the inner surface of the protective clothing 2. In addition, the cold pack 1 may be inserted into the inner pocket or the like of the protective clothing 2 or may be inserted into the pocket portion of the body cooling clothing formed of a mesh material worn inside the protective clothing 2. Also good. In addition, in a portion where there is no underwear such as a neck, a gauze, a towel, or the like is interposed between the cooling agent 4 and the skin.
In the protective garment 2 of the present embodiment, an exhaust port (not shown) is formed in the lower part such as a leg or a foot. Note that the arrangement, shape, number, and the like of the exhaust ports are not limited and may be appropriately formed. Moreover, what is necessary is just to form an exhaust port as needed.

  As described above, according to the cooling method using the cryogen pack 1 of the present embodiment, the lymph portion is directly cooled by the cryogen 4 to effectively cool the worker who performs the work in a high temperature environment. be able to. In addition, since the cooling agent 4 is cooled by the dry ice 3, the cooling effect is maintained for a long time (2 to 3 hours) compared to the cooling time (about 30 minutes) when the cooling agent 4 is used alone. Is done. In addition, since the cooling agent 4 is cooled by the dry ice 3, it can be used without being frozen in advance, and the time and labor required for preparation can be omitted.

  Further, since the cold air generated by the sublimation of the dry ice 3 is discharged from the hole 6 of the bag 5 and reaches the inside of the protective clothing 2, the whole body of the worker is cooled by the cold air. Further, since the cold air discharged from the bag 5 is exhausted from the exhaust port formed in the protective clothing 2, an air flow is formed in the protective clothing 2, and the cold air spreads throughout the protective clothing 2. The protective clothing 2 is not filled with carbon dioxide. Moreover, since the cold insulating agent 4 is interposed between the dry ice 3 and the skin of the worker, frostbite due to the dry ice 3 can be prevented. Even if the dry ice 3 is reduced by sublimation, the cooling effect is maintained, so that the dry ice 3 can be used for a long time. As long as the dry ice 3 is about 250 g, the work is not hindered by wearing (size, weight, etc.) of the cold pack 1.

The embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and the above-described components can be appropriately changed without departing from the spirit of the present invention.
In the above embodiment, the case where the cold pack 1 is used when working in a high temperature environment has been described. However, the use of the cold pack 1 is not limited, for example, leisure or sports It may be used for measures against heat stroke.
If the bag 5 containing the dry ice 3 is further housed in a special case made of rubber or cloth, frostbite can be prevented more reliably. In addition, use a case with excellent breathability so that the cool case can be exhausted.

1 Coolant Pack 2 Protective Clothing 3 Dry Ice 4 Coolant 5 Bag (Container)
6 holes

Claims (4)

Dry ice stored in a container with a plurality of holes;
And a cold insulation agent interposed between the dry ice and the human body.   The cryogen pack according to claim 1, wherein the container is a bag formed of a resin film. A cooling method for workers who perform work while wearing protective clothing,
A cooling method, wherein a container having a plurality of holes containing dry ice is worn inside the protective clothing, and a cooling agent is attached to the human body side of the container.   The cooling method according to claim 3, wherein an exhaust port is formed in a lower part of the protective clothing.

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