JP2017221661A - Cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold insulation tool capable of reliably cooling a human body or a dead body without using a large scale tool or device in particular.SOLUTION: A cold insulation tool 1 for cooling a human body or a dead body comprises a first sheet 2 made of a metal thin film having high thermal conductivity and a second sheet 3 having thermal conductivity lower than that of the first sheet 2. The first sheet 2 and the second sheet 3 are placed on each other, one side of it being made to be an opening 4 and the other three sides being sealed to have the shape of a bag.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cold insulator used for cooling the whole or part of a human body or an object, and more specifically, relates to a cold insulator capable of cooling a human body or an object without using a particularly large-scale instrument or device. .

  In general medical settings, for patients with infections such as high fever, cool down places with thick blood vessels such as arteries of the human body, such as the armpits and the bases of the feet, with ice bags or cold storage materials to promote lower heat. I am doing so.

  In addition, the treatment of the corpse in the case of death in the hospital is handed over from the hospital to the funeral officials and other relevant parties, but in order to prevent the decay of the corpse, it is required to cool quickly after death.

  In order to keep the body cool and prevent corruption, store the body in a refrigerator that can be finely digitally controlled, for example, depending on the age, physique, gender, etc. of the body, keep the internal temperature at 4-7 ℃, It is important to keep the body cold without freezing it.

  However, since it takes time to cool down the deep body temperature in the refrigerator (about 6 hours), the body is expected to have central fever and fulminant changes for which direct cooling is most effective. Even if it is applied, it is less effective.

  Also, many general hospitals do not have refrigeration facilities for storing bodies. For this reason, cold insulation using a cold storage material has become common. Specifically, by applying a bag containing a cold storage material to the body, neck, abdomen, etc., the rise in the temperature of the whole body is suppressed and corruption is prevented.

  In particular, corpse cold storage using a cold storage material can reduce the deep body temperature in about 15 minutes. Therefore, the rapid decrease in the deep body temperature can be achieved even for the above-mentioned corpses where central fever and fulminant changes are predicted. It can be done and is effective in preventing corruption.

  On the other hand, dry ice is used to preserve the body in the event of a large natural disaster and unfortunately many lives have been lost.

  When recovering bodies from disaster areas, the most important thing is that the bodies remain intact and stored until the inspection and identification of the bodies are completed at the hospital or inspection organization. Generally, the bodies are recovered from the disaster areas. In this case, dry ice is packed around the corpse as a means for preventing the decay of the corpse stored in the corpse bag.

  Thus, dry ice has traditionally been used as a way to cool bodies, but since dry ice must be stored at -40 ° C or lower, it cannot be stocked in large quantities at hospitals or funeral companies. Instead, they are purchased from manufacturing companies as needed.

  In this case, there is no problem when there is no particularly large natural disaster and the distribution of dry ice is stable. However, if a large natural disaster that cannot be predicted as described above occurs, many bodies should be stored quickly. Despite this, there are many cases that have hindered the acquisition of dry ice.

  The closest example is the case of the Great East Japan Earthquake, but the problem of excess and shortage of dry ice, such as disaster areas where dry ice is available and areas not available due to the power of the affected areas, and purchase of some funeral companies There was also a problem of dry ice shortages and soaring.

  Therefore, conventionally, as disclosed in Patent Document 1 below, there is provided a cold insulation means that can keep a body bag cold while the body is being transported to a hospital or an inspection organization without using dry ice.

  In recent years, the release of carbon dioxide (carbon dioxide) into the atmosphere has been seen as a problem from the viewpoint of environmental issues, especially global warming, so the use of dry ice that sublimates to carbon dioxide has been reduced. Therefore, it has been studied to avoid the use of dry ice and to switch to other cooling means (Patent Document 2 below).

  However, in each of the above conventional examples, the structure of the cold insulation means is complicated, and the cold insulation means of Patent Document 1 can keep the cold for a long time, but cannot quickly keep the cold, and the central fever and the fulminant type change. However, it cannot cope with the anti-corruption of the body.

  In Patent Document 2 below, when the body is kept cold, the gel made of the water-absorbent resin frozen in the freezer is frozen. If the frozen gel returns to the normal state, the cold insulation sheet can be replaced. It is necessary and the body cannot be continuously cooled over a long period of time.

JP 2008-029780 A Japanese Utility Model Publication No. 05-076427

  Therefore, the present inventor noticed that heat exchange occurs only in a material having high thermal conductivity when a material having high thermal conductivity and a material having low thermal conductivity are combined. A cooler that can cool a human body or an object efficiently and continuously without using a large-scale instrument or device, etc., by utilizing the cooling effect in combination with a substance having low thermal conductivity. is there.

  The present invention relates to a cold insulation device that keeps a human body or an object cold, a first sheet having a high thermal conductivity used to come into contact with the human body or an object, and a second sheet having a lower thermal conductivity than the first sheet. The first sheet and the second sheet are overlapped, one side of which is an opening, and the other three sides are sealed to form a bag shape.

  The first sheet is preferably made of a metal thin film, and the second sheet is preferably a nonwoven fabric. Moreover, it is good to store a cool storage material inside.

  According to the present invention, by superimposing the first sheet made of a heat conductive sheet and the second sheet having a lower thermal conductivity than the first sheet, for example, on the forehead of a patient with heat, By bringing the first sheet into contact, the first sheet having high thermal conductivity can be conducted, and the patient's fever can be promoted.

  In this case, a first sheet made of a heat conductive sheet and a second sheet having a lower thermal conductivity than the first sheet are overlapped, and one side is used as an opening, and the other three sides are sealed to form a bag shape. Thus, for example, ice, a general cold storage material, or the like can be introduced into the opening through the opening, and the lower heat of the patient can be more efficiently promoted.

  Similarly, by putting a cool storage material made of ultra-low temperature material such as dry ice into the bag of the cooler and bringing it into contact with local parts such as the neck and abdomen of the corpse, especially central fever and fulminant changes are observed. It is possible to quickly reduce the predicted body temperature of the corpse, which is effective in preventing rot of the corpse.

  In these cases, if the first sheet is a heat conductive sheet made of a metal thin film such as aluminum and the second sheet is a non-woven fabric having a low heat conductivity, it is easy to process and inexpensive. it can.

Explanatory drawing which shows the structure of the cold insulator of this invention. Explanatory drawing which shows the usage example of the cold insulator of this invention. Explanatory drawing which shows the cold insulator of this invention. Graph explanatory drawing which shows the example of a temperature change of the cold insulator of this invention.

  Hereinafter, although an embodiment of the present invention is described with reference to drawings, the present invention is not limited to this embodiment.

  First, referring to FIG. 1, a cold insulator 1 according to the first embodiment has a first sheet 2 made of a metal thin film such as aluminum having a high thermal conductivity, and a thermal conductivity lower than that of the first sheet. For example, it is comprised from the 2nd sheet | seat 3 which consists of a nonwoven fabric.

  In the present embodiment, the cold insulator 1 may be, for example, a size that allows the human body to lie down (see FIG. 2), or a size that can contact a local part of the human body such as the neck and feet of the human body, and is adapted to the location to be cooled. It may be the size.

  FIG. 2 shows an example in which the human body is cooled using the cold insulator 1. In this example, the cold insulator 1 is used to cool a patient with high fever such as an infectious disease, but is used by being placed on a bed such as a bed in the same manner as a general sheet.

  In this case, the cold insulator 1 is such that the first sheet 2 comes into contact with the patient and causes the patient to lie down on the first sheet so as to promote lower heat of the high-temperature patient.

  Here, it is known that if a material with high thermal conductivity is combined with a material with low thermal conductivity, heat exchange occurs only with the material with high thermal conductivity. When touching with, it feels cold because heat moves from the hand to the touched surface.

  Therefore, as shown in FIG. 2, the patient's heat can be transferred to the first sheet 2 while giving the patient a cold feeling by lying on the first sheet 2 having a high thermal conductivity. The human body can be continuously cooled without using particularly large-scale instruments and devices.

  In the first embodiment, the cold insulator 1 is described as a cold insulator that urges a patient with high heat on the first sheet 2 to promote the patient's lower heat, but is not limited thereto. For example, if a body that has not yet died is laid on the first sheet 2, the heat of the body can be conducted to the first sheet 2 and can also be used as a cooler for the body.

  Furthermore, in the case where many bodies are stored unfortunately due to a large natural disaster, the body is covered by the first sheet 2 by covering the body with the first sheet side so as to contact the body or wrapping the body. Since the outside air temperature can be insulated by the second sheet 3, the body can be kept cold.

  FIG. 3 shows the second embodiment, and the cold insulator 1 includes a first sheet made of a metal thin film having a high thermal conductivity, such as aluminum, as in the first embodiment. The second sheet 3 is made of a non-woven fabric having a lower thermal conductivity than the first sheet.

  In this example, the cold insulator 1 has a bag shape in which one side is an opening 4 and the other three sides are sealed. For example, a cryogenic material (not shown) such as a cold storage material or dry ice is used. It can be accommodated from the opening 4.

  Therefore, when cooling the local part of the human body or body, the first sheet 2 is stored by storing an ultra-low temperature material such as a cold storage material or dry ice in the cold insulator 1 and bringing the first sheet 2 side into contact with the human body or body. In this way, the temperature of the ultra-low temperature material can be conducted to the human body and the dead body to rapidly cool it. Therefore, it is particularly effective in preventing rot of the body where central fever and fulminant changes are predicted.

  Further, in this case, the second sheet 3 having a low thermal conductivity absorbs the dew condensation caused by the temperature change of the cold insulator 1 due to the introduction of the cryogenic material such as the cold storage material and dry ice, and also makes the temperature of the ultralow temperature material external. It can serve as a non-conductive insulation.

  In addition, in the said embodiment, although the 2nd sheet | seat 3 is comprised with the nonwoven fabric with low heat conductivity, a nonwoven fabric can be used with most substances which can be processed into a fiber, and can also combine several raw materials. Therefore, it can be appropriately determined according to the specification. In this case, the thickness of the cloth may be increased to reduce the thermal conductivity regardless of the raw material of the nonwoven fabric.

  In the said embodiment, although demonstrated in the example which puts ultra-low-temperature materials, such as a cool storage material and dry ice, in the inside of the cold insulator 1 and cools a human body and a dead body, the cold insulator 1 of this invention is demonstrated in the said 1st Embodiment. As described above, the cooling effect can be improved without introducing an ultra-low temperature material such as a cold storage material or dry ice into the interior.

  In addition, in the cold insulator 1 in the second embodiment, since there is a gap for air to enter between the first sheet 2 and the second sheet 3, convection due to the flow of air is the thermal conductivity of the first sheet 2. Therefore, the heat of the human body and the corpse can be effectively taken into the cold insulator 1.

  Moreover, in this 2nd Embodiment, although the cold insulator 1 is made into the bag shape which made the one side the opening part 4 and sealed the other three sides, the magnitude | size and shape are determined according to the local part to cool. What is necessary is just to be made, and it is good also as a bag shape which provided the gusset between the 1st sheet | seat 2 and the 2nd sheet | seat 3. FIG.

  In addition, in this 1st Embodiment and this 2nd Embodiment, although it demonstrated in the example which cools a human body and a dead body as an example which cools with the cold insulator 1 of this invention, this invention is not limited to this, For example, In the cold insulator 1, by placing the cold fresh food so as to contact the first sheet 2, it can be continuously cooled.

  In this case, it is possible to keep the cold more effectively by storing the cold storage material 1 and an ultra-low temperature material such as dry ice in contact with the cold fresh food. In addition, as a cold storage material, if it is flexible by adding an antifreeze such as a gelling agent or polyhydric alcohol to water, it can improve the fit to a human body or an object, and can be more effectively kept cool. .

  In the first embodiment and the second embodiment, the first sheet 2 is a metal thin film sheet such as aluminum in consideration of ease of processing and cost, but diamond, silver, copper, It may be a high thermal conductivity material such as, and is not limited to the first and second embodiments.

  In addition, it is preferable not to make the first sheet 2 the metal color of the metal material itself such as aluminum, for example, color printing such as white, and in particular, when the cold insulator is addressed to the body, The discomfort of the bereaved's metal color can be resolved.

  Next, although evaluation of the product of the present invention was performed by the following examples and comparative examples, the present invention is not limited to these examples and comparative examples.

(Example)
Cold storage material A (Mie Chemicals Co., Ltd.) filled with nylon polyethylene bags containing ultra-low temperature material, antifreezing solution such as gelling agent or polyhydric alcohol added to water, and a small amount of cross-linking agent, preservative, colorant, etc. Company name; “Snow Pack Cool”) and a cold storage material B in which the regenerator material A is housed in an exclusive cover made of an aluminum sheet and a non-woven fabric (product of the present invention), a domestic freezer (about −20 ° C.) FIG. 4 shows the change in the surface temperature when the sample is allowed to stand in an environment of 26 ° C. to 27 ° C. after being sufficiently cooled in the furnace.

  According to this, although the cooling rate in the freezer A is sufficiently cooled faster than the cooler B, the temperature rise is faster than the cooler B in the above environment. On the other hand, although the cooling material B has a slow cooling rate in the freezer, the temperature rise in the environment is moderate.

  From this measurement result, it was found that the regenerator material A stored in the special cover according to the present invention is less affected by the environmental temperature and has a greater cold insulation effect.

  In this measurement, the aluminum sheet of the cold insulation material B is left as the upper surface, and the surface temperature of the aluminum sheet is measured. If the aluminum sheet side is the lower surface and the nonwoven fabric side is the upper surface, the heat insulating effect of the nonwoven fabric is measured. Thus, it goes without saying that the increase in the surface temperature of the aluminum sheet has a more gradual result.

(Evaluation of the product of the present invention)
In order to obtain the evaluation of the product of the present invention, 33 patients were tried on the following cold insulation materials at Onomichi Municipal Hospital, and their impressions and evaluations were obtained. Evaluations were made at wards and emergency clinics where many people died.
Comparative Example 1: Cold storage material in which a cold storage material C used in a hospital is housed in a cover made of an aluminum sheet (thin; aluminum 90 μm) and a non-woven fabric (rayon non-woven fabric 30 g) Comparative example 2: an aluminum sheet is provided on one side Cold storage material (manufactured by Taketora Corporation; trade name “Sofura Cool (r) quick prototype)”; without cover Comparative Example 3: Used in a hospital in a cover made of aluminum sheet (thick; aluminum 90 μm) and nonwoven fabric (spunbond nonwoven fabric 40 g) Cold storage material containing stored cold storage material C

(Impressions about each comparative example)
Comparative Example 1:
・ There was a lot of condensation and I was worried about the nightclothes getting wet.
-Better than putting it in a plastic bag. As a person, I was able to feel that I was working to the end.
・ There was a sense of quality.
・ When I was not using it, I was troubled to store it completely.
Comparative Example 2:
・ There was resistance to put directly on the body, put it in a plastic bag.
・ The light blue color of the regenerator is too bright. It is better not to see the color.
Comparative Example 3:
-Condensation is not a concern.
・ It was better than a thin non-woven fabric.

And the result of having selected the best thing among Comparative Examples 1-3 is as follows.
Comparative Example 1: 2 Comparative Example 2: 1 Comparative Example 3: 25 No entry: 5

  From this evaluation result, there is a sense of luxury compared to using the cold storage material itself in direct contact with the human body or storing it in a plastic bag, and for example, when used for those who died, the color of the cold storage material It turns out that it can remove disgust.

DESCRIPTION OF SYMBOLS 1 Cold insulator 2 1st sheet 3 2nd sheet 4 Opening part

Claims (4)

A cold insulator that cools a human body or an object,
A first sheet having a high thermal conductivity used to contact a human body or an object, and a second sheet having a lower thermal conductivity than the first sheet,
A cold insulator characterized in that the first sheet and the second sheet are overlapped, one side thereof is used as an opening, and the other three sides are sealed to form a bag shape. The cold insulator according to claim 1, wherein the first sheet is made of a metal thin film. The cold insulator according to claim 1, wherein the second sheet is made of a nonwoven fabric. The cold storage device according to any one of claims 1 to 3, wherein a cold storage material is accommodated therein.

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