WO2017077637A1

WO2017077637A1 - Special-purpose cooling suit

Info

Publication number: WO2017077637A1
Application number: PCT/JP2015/081306
Authority: WO
Inventors: 市ヶ谷　弘司; 松本　吉弘
Original assignee: 株式会社セフト研究所
Priority date: 2015-11-06
Filing date: 2015-11-06
Publication date: 2017-05-11
Also published as: WO2017077720A1; JPWO2017077720A1; JP6872491B2

Abstract

Provided is a special-purpose cooling suit capable of promoting the cooling of the body by using a simple configuration. The special-purpose cooling suit comprises: a garment body (10) comprising a prescribed sheet-shaped raw material having moisture permeability; and a stretchable close-fitting means (20) attached to a prescribed site on the garment body (10), from the outside, and which causes the prescribed site to be closely fitted to the body or underwear. Perspiration from the body is caused to penetrate to the outer surface side of the garment body (10) and is caused to evaporate from the outer surface of the garment body (10), as a result of a temperature gradient that occurs between the inner surface of the garment body (10) and the outer surface of the garment body (10).

Description

Cooling special clothing

The present invention relates to a special cooling clothing that releases heat from the body and promotes cooling of the body.

The material of the protective clothing for performing work while avoiding contact of harmful substances with the skin has a function of blocking liquid or gas. Therefore, when such protective clothing is worn, the inside of the protective clothing is stuffy due to sweat from the worker's body. In general, a moisture-permeable sheet-like material is used as a material for the protective clothing, but the protective clothing is hardly breathable, so that it is impossible to eliminate the stuffiness of the worker's body.

In particular, when the outside air temperature is high, the humidity inside the protective clothing further increases, making it difficult for the operator to work for a long time while wearing the protective clothing. There was a problem.

For this reason, a protective clothing cooling device that cools the worker's body by capturing outside air from the unequipped part of the protective clothing and distributing it in the vicinity of the worker's body to efficiently evaporate sweat from the worker's body. It is known that the body of an operator is effectively cooled by being worn on the inside of the clothes even when the protective clothing is worn (see, for example, Patent Document 1).

JP 2010-091163 A

However, since the cooling device for protective clothing described in Patent Document 1 is configured to introduce outside air into the protective clothing, it is suitable for protective clothing such as bulletproof clothing and blade-proof clothing, but harmful substances are In protective clothing to prevent intrusion inside, so-called chemical protective clothing, etc., even harmful substances are taken into the protective clothing together with air, and the original function as protective clothing is not performed at all. There has been a problem that such a cooling device for protective clothing cannot be used.

An object of the present invention is to provide a special cooling clothing capable of promoting the cooling of the body by efficiently releasing heat from the body while preventing the entry of outside air with a simple configuration.

In order to achieve the above object, the present invention provides:
A clothing body made of a predetermined sheet-like material having moisture permeability;
A contact means that is attached to a predetermined part of the clothing body from the outside and closely contacts the predetermined part to the body or underwear;
It is a special clothing for cooling characterized by comprising.

In the cooling special clothing according to the present invention, by providing a close contact means for bringing the clothing body into close contact with the body or underwear, there is no air layer in the clothing body, and there is no space between the body or the underwear and the clothing body (sheet-like material). The moisture gradient can be increased, and sweat from the body can be efficiently transmitted to the outside of the clothes through the sheet material having moisture permeability, thus promoting the cooling of the body by the heat of vaporization during the evaporation Can be made.

Also, by providing the close contact means on the outside of the clothing body, the original function of the clothing body is not affected. For this reason, as a clothing body, for example, one having a function to prevent harmful substances contained in liquid or gas from entering the clothing body, or dust from the body or underwear is on the outside of the clothing body If the thing which has the function which prevents flowing out is used, the clothes main body can exhibit the original function as protective clothing or dust-proof clothing.

According to the present invention, by providing the close contact means on the outside of the clothes body, it is possible to promote the cooling of the body by efficiently releasing the heat from the body while preventing the entry of outside air with a simple configuration. .

It is a schematic front view of the cooling special clothing of this embodiment. It is a schematic rear view of the cooling special clothing of this embodiment. It is a schematic front view of the clothing main body of the cooling special clothing of this embodiment. It is a schematic back view of the clothing main body of the cooling special clothing of this embodiment. It is a characteristic view which shows the relationship between the distance from a body to a clothing body, and a humidity gradient. It is explanatory drawing which shows an example of the measuring method. It is a characteristic view which shows an example of an experimental result. It is a characteristic view which shows the relationship between the distance from the body to the clothing body and the surface temperature of the body. It is a characteristic view which shows the relationship between the body surface temperature and a water vapor transmission coefficient. It is a schematic front view which shows other embodiment of a cooling special clothing. It is a schematic rear view which shows other embodiment of a cooling special clothing.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

(Embodiment)
First, the present embodiment will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

The cooling special clothing 1 of this embodiment is a special clothing used for a special application having a cooling promotion function, and includes a clothing body 10 and a close contact means 20 as shown in FIGS. 1A and 1B.

The clothing body 10 is clothing that covers the body and is made of a predetermined sheet material having moisture permeability. In the present embodiment, as the clothing body 10, a clothing having a function of protecting harmful substances contained in liquid or gas from entering the clothing body 10, that is, a chemical protective clothing is used.

Therefore, as the sheet-like material, a material having moisture permeability, such as a non-woven fabric, can be used as well as preventing entry of contaminated air or contaminated liquid. The harmful substances contained in the gas include harmful particles floating in the gas.

In the present embodiment, the clothing body 10 is continuously formed in the shape of clothing. That is, the clothing body 10 can cover the upper body and the lower body, and can cover the head with the hood. As shown in FIGS. 2A and 2B, a fastener (opening / closing means) 11 is provided at the front portion of the clothing body 10. The fastener 11 is for opening and closing the front part when the clothes body 10 is worn. As such protective clothing (clothing body 10), commercially available products can be used.

The contact means 20 is for pressing the predetermined part of the clothing body 10 from the outside to the inside so that the predetermined part of the clothing body 10 is in close contact with the body or underwear. In the present embodiment, the contact means 20 is made in a clothing shape that covers the entire clothing body 10 using a mesh material having elasticity. Accordingly, the contact means 20 itself is contracted, so that it is considerably smaller than the clothing body 10 but has the same shape as the clothing body 10.

Since the contact means 20 is formed in this way, the button 21 as the opening / closing means as shown in FIGS. 1A and 1B is removed and worn on the clothes body 10 in the same manner as when the clothes body 10 is worn. When the button 21 is worn and worn, the elastic mesh material presses the entire clothing body 10 from the outside to the inside, so that the entire clothing body 10 can be securely adhered to the body or underwear.

On the other hand, as shown in FIGS. 2A and 2B, when the close contact means 20 is not worn as in the prior art, the clothing main body 10 is made larger than the worker's body, so that the clothing body 10 is in a so-called cover-up state. Therefore, a space is likely to be generated between the worker's body (or underwear) and the clothing body 10.

On the other hand, as shown in FIG. 1A and FIG. 1B, by fitting the close contact means 20, it fits to the worker's body and between the worker's body (or underwear) and the clothing body 10. A space can be prevented from being generated.

Here, the role of the contact means 20 and the cooling effect will be described in detail.
Now, let us consider a case where the contact means 20 is not provided, and for example, a space having a width of 10 mm is generated between the body and the clothing body 10.

FIG. 3 is a diagram showing the relationship between the distance from the body and the humidity at the position of the distance. Here, the humidity of the body surface is 100%, and the humidity of the outside air is 72% (average humidity in Tokyo from July to September 2014 (summer)).

Even if the humidity of the air that is the outside air, that is, the humidity of the outer surface of the clothing body 10 is 72%, the humidity gradient MS31 between the body surface and the clothing body 10 is gentle as shown in FIG. .

This is because the air in the space existing in the gap between the body surface and the clothing body 10 cannot efficiently permeate the sweat from the body to the outer surface of the clothing body 10 having moisture permeability. That is, if the water vapor is vaporized and the water vapor is saturated in the space, the sweat is difficult to vaporize. For example, a large amount of air is flowing along the body on the outer surface of the clothing body 10. However, it is not possible to efficiently permeate sweat from the body through the outer surface of the clothing body 10 and evaporate it on the outer surface of the clothing body 10.

On the other hand, in this embodiment, the contact | adherence means 20 is provided in the outer side of the clothing main body 10, and since this contact | adherence means 20 has stuck the clothing main body 10 to the body or the underwear, it is between the body and the clothing main body 10. Space can be eliminated.

When the contact means 20 brings the clothes body 10 into close contact with the body, for example, if the distance between the body and the clothes body 10 is as close as possible to 0 mm, the humidity gradient MS32 becomes steep as shown in FIG. . For this reason, water vapor (sweat) can easily permeate out of the clothes body 10 having moisture permeability, so that the sweat generated from the body can be efficiently transmitted to the outer surface of the clothes body 10, and the sweat can be permeated. By evaporating on the outer surface of the clothes, the air on the outer surface of the clothing body 10 can be cooled by the heat of vaporization when evaporating.

At the same time, the close contact means 20 brings the clothing body 10 into close contact with the body, so that the temperature gradient between the body surface and the clothing body 10 also becomes steep, and the outer surface of the clothing body 10 is cooled and the temperature is lowered. On the other hand, since heat on the inner surface of the clothing body 10 is easily conducted, the air can efficiently remove a large amount of heat from the body and promote cooling of the body.

In addition, since the contact means 20 is only attached to the outer side of the clothes body 10 having permeability, the original function of the clothes body 10 is not affected. For this reason, even if it is a case where the thing which has a function which protects the harmful substance contained in the liquid or gas from entering the clothes main body 10 as the clothes main body 10 is used, the clothes main body 10 is used as protective clothing. Function can be demonstrated.

Here, the relationship between the distance between the body and the clothing body 10 and the amount of water vapor (sweat) that permeates through the clothing body 10 will be described. FIG. 5 shows the distance between the body and the clothing body 10 and the amount of water vapor (sweat) that permeates the clothing body 10, measured by the measurement method shown in FIG. 4.

As shown in FIG. 4, the lower end portion of the sealed container CN41 whose lower end is released is covered with a sample SM41 (corresponding to the clothing body), and the cloth CL41 (body's body) moistened with water in the sealed container CN41. (Corresponding to the surface) is arranged on the sample SM41 so as to form an air layer AR41 (distance between the body and the clothing body) at a predetermined interval. Then, an air flow AF41 (airflow) is generated so that the airflow AF41 (airflow) flows along the surface of the sample SM41.

As sample SM41,
Sample 1: Gore-Tex (registered trademark)
Sample 2: Tyvek (registered trademark)
Is used. Here, the water vapor transmission coefficient of sample 1 is 13500 g / m ² · 24 hours, and the water vapor transmission coefficient of sample 2 is 6000 g / m ² · 24 hours (estimated value).

As can be seen from FIG. 5, the amount of water vapor (sweat) that permeates the clothing body 10 is five times greater than the case where the distance between the body and the clothing body 10 is 30 mm. It can be seen that it increases to a certain extent.

For this reason, by reducing the distance between the body and the clothing body 10, a large amount of water vapor (sweat) vaporized from the skin can be transmitted outside the clothing, and the amount of sweat vaporization and cooling by the skin can be increased. It turns out that it is possible.

In Sample 1 and water vapor permeability coefficient of the sample 2 is a sample 1 13500g ^{/ m} 2 · 24 hours, and sample 2 6000 g ^{/ m} 2 · 24 hours, although the difference is large, the water vapor (sweat that penetrates clothing body 10 ) Is not so large.

In addition, although the sample 1 and the sample 2 are clothes with high water vapor permeability which are marketed, respectively, the high water vapor permeability of the cloth material is not impaired by reducing the distance between the body and the clothing body 10. It becomes possible to use with higher performance.

Here, the reason for the cooling effect obtained by bringing the clothing body 10 into close contact with the body will be described. In a sealed clothing body 10 such as a protective clothing, a method related to the basic heat release for efficiently releasing the heat of the body to the outside and lowering the temperature of the body surface is to apply the sensible heat of the body. There are a method of discharging the body 10 to the outside and a method of vaporizing sweat which is a cooling function provided in the body.

The former is sensible heat, and the latter focuses on latent heat. In the latter case, when the vaporized water vapor is saturated in the clothing main body 10, it becomes difficult for the sweat to vaporize, so it is necessary to efficiently pass the water vapor out of the clothing main body 10.

The heat inside the body is dissipated outside through the skin. If the vaporization by sweat does not occur on the surface of the body, all the fever of the body becomes heat transfer by sensible heat. As the sweat evaporates, the amount of water vapor in the air increases and the amount of latent heat in the air increases. The fever of the body converted into latent heat by vaporization is excluded from the sensible heat that causes the temperature of the body surface to rise,
(Heating amount of body surface) = (Body fever)-(Latent heat)
It becomes the relationship. In other words, all body heat does not become sensible heat associated with temperature rise. Thus, it is an object of the present invention to make the most effective use of not only sensible heat but also latent heat.

The sensible heat travels in the form of heat conduction toward the lower temperature side (outside air side), passes through the clothing cloth between the body and the clothing body 10, and is discharged to the outside air. On the other hand, the water vapor evaporated on the surface of the body travels toward the lower water vapor density (humidity), permeates the clothing material between the body and the clothing body 10, and is discharged to the outside air.

In such a model, the amount of water vapor (sweat) that passes through the air layer formed by the clothing body 10 and the body (water vapor transmission amount), the sensible heat passage amount, and the “distance between the body and the clothing body 10”, etc. The relationship is approximately expressed by the following equation. The coefficients included in the formula are excluded.

From the above formula, the “distance between the body and the clothing body 10” is included in the respective equations for the water vapor transmission amount and the sensible heat passage amount, and reducing the “distance between the body and the clothing body 10” is water vapor transmission. This leads to a double effect of increasing the amount and increasing the amount of sensible heat passage.

FIG. 6 is a diagram showing the relationship between the velocity of the external air flow, the distance between the body and the clothing body 10, and the surface temperature of the body by the calculation based on the above two formulas. As the calculation conditions, the above-described sample 1 is used, and the environmental conditions and the like are an air temperature of 30 ° CDB, a humidity of 50%, and an internal heat generation of 100 W / m ² . Even under the above conditions, if the speed of the external air flow is 1 m / s or more, the surface temperature of the body can be set to a proper value around 33 ° C. by reducing the distance between the body and the clothing body 10. However, since there is an influence of the speed of the external airflow, it is effective to forcibly generate an airflow outside the clothing body 10 depending on external conditions.

FIG. 7 is a graph showing the relationship between the “distance between the body and the clothing body 10” obtained by calculation, the water vapor transmission coefficient of the clothing body 10, and the surface temperature. The environmental conditions are an air velocity of 3 m / s, an air temperature of 30 ° CDB, a humidity of 50%, and an internal heat generation of 100 W / m ² . According to FIG. 7, if the water vapor transmission coefficient of the clothing body 10 is 10000 g / m ² · 24 hours or more, the surface temperature does not change much even if it is further increased. In other words, it is sufficient that about 10,000 g / m ² · 24 hours is sufficient, and the effect of improving the distance between the body and the clothing body 10 is greater than the improvement of the water vapor transmission coefficient. This tendency is the same even under different external air velocity and temperature / humidity conditions.
It can also be seen that even when the water vapor transmission coefficient is 10,000 g / m ² · 24 hours or less, the surface temperature is remarkably lowered (cooling performance is increased) by reducing the distance between the body and the clothing body 10.

As described above, in the cooling special clothing 1 of the present embodiment, the contact means 20 attached to the outside of the permeable clothing body 10 brings the clothing body 10 into close contact with the body or underwear. The humidity gradient between the body 10 and the body 10 becomes steep, and the sweat (water vapor) from the body is efficiently transmitted to the outer surface of the clothing body 10, and the air on the outer surface of the clothing body 10 cooled by the heat of vaporization when evaporated Since the air can be cooled, the air can take a large amount of heat from the body and promote cooling of the body.

In addition, this invention is not limited to said embodiment, A various deformation | transformation is possible within the range of the summary.

For example, when the outside air temperature is lower than the temperature of the body surface, the inside of the clothing body 10 is merely a steep temperature gradient due to the temperature difference between the outside air temperature (low temperature side) and the body surface temperature (high temperature side). Therefore, air (outside air) can take a large amount of heat from the body and promote cooling of the body.

In the above embodiment, the case where the contact means 20 is attached to the clothing body 10 so as to cover the entire clothing body 10 to promote the cooling of the entire body excluding the face or the like has been described. It is also possible to promote the cooling of only the relevant part by attaching to the desired part of the clothing body 10.

Further, even when most of the clothing body 10 is brought into close contact with the body by the contact means 20, it is not always necessary to form it in a clothing shape, and a plurality of contact means separated from the trunk may be used for the arms and legs. it can.

For example, as shown in FIGS. 8A and 8B, the contact means 20 may be separated so as to become a body contact means 30, an arm contact means 31, and a leg contact means 32. In this case, it is desirable to form the body portion contact means 30 in a substantially vest shape. Furthermore, since it is not always necessary to provide the opening / closing means in the contact means by making the shape easy to wear, the structure can be further simplified.

Further, not all of the contact means separated into a plurality of parts may be used, but may be appropriately selected as necessary. For example, the contact means may be used only on the thigh portion, not the entire foot, and the contact means may not be used below the knee.

Further, in the above embodiment, the case where the clothing body 10 and the contact means 20 are separate components has been described, but of course, the contact means 20 is formed outside the clothes body 10 and integrated. May be.

In the above-described embodiment, the case where a stretchable mesh material is used as the contact means 20 has been described. It is also possible to use a cylindrical net-like material having a large elasticity in the lateral direction using a material having a very large elasticity (5 times or more).
Moreover, the contact | adherence means 20 does not need to expand-contract, if the predetermined site | part of the clothing main body 10 can contact | adhere to a body or underwear. For example, it may be a plastic net, a supporter or the like.

Further, when a cylindrical net-like material is used as the contact means 20, a net-like material having a large diameter constituting the body part, a net-like material having a small diameter constituting the collar part, and a net-like material constituting the leg part, May be provided separately. In this case, each net-like material may be separated or integrally formed.
Further, the clothing main body 10 and the contact means 20 may be integrated. For example, the contact means 20 may be integrally formed on the front surface or back surface (inner surface) of the clothing body 10. In this case, since it is not necessary to wear the close contact means 20, it is easy to attach and detach.

Furthermore, it is desirable to use, for example, cotton fibers for warp and a stretchy mesh material (adhesion means 20) having a large water absorption property for cooling special clothing for protection purposes used in a very hot environment. . By including water in a mesh-like material having a large water absorption property by showering or spraying, the mesh-like material is cooled by the heat of vaporization of the water, and the body can be cooled through clothing that is in close contact with the body.

Furthermore, in the above-described embodiment, the case where the protective clothing having a function of protecting harmful substances contained in the liquid or gas from entering the clothing main body 10 is used as the clothing main body 10 has been described. As the main body 10, you may use the dust-proof clothing which has a function which prevents the dust which came out of the body or the underwear from flowing out of the clothing main body. In this case, the cooling special clothing of the present invention has a sufficient cooling promotion function while completely retaining the function as a dust-proof clothing. Therefore, such cooling special clothing can be used in, for example, a clean room used in the manufacturing process of precision equipment, a food processing factory where quality assurance is required, and the like.

Also, as the elastic mesh material used for the contact means 20 used in the dust proof clothing, it is necessary to prevent dust from coming out from the mesh material itself. For this reason, it is desirable to use a monofilament as a yarn constituting the mesh material.

Also, as the clothing body 10, rainwear or the like that protects it from getting wet may be used.

Moreover, in said embodiment, although the vapor | steam evaporated from the inside of the body or the clothes main body 10 is permeate | transmitted actively, the amount of body cooling is increased by the heat of vaporization when evaporating, but the clothes main body 10 and contact | adherence means 20 is a so-called air-conditioning garment comprising an outer garment worn from above 20 and air blowing means for taking in air from the outside and forcing a flow of air in the space between the clothing body 10 and the contact means 20 and the outer garment. By wearing, the cooling effect can be further enhanced.

As described above, the cooling special clothing 1 according to the present invention is suitable for enhancing the cooling efficiency with a simple configuration without impairing the function of the clothing body 10 such as protective clothing.

1 Cooling special clothing 10 Clothing body 11 Fastener (opening and closing means)
20, 30, 31, 32 Contacting means 21 Button (opening / closing means)

Claims

A clothing body made of a predetermined sheet-like material having moisture permeability;
Close contact means for bringing a predetermined part of the clothes body into close contact with the body or underwear;
Cooling special clothing characterized by comprising.
The clothes body has a function of preventing harmful substances contained in a liquid or gas from entering the clothes body, and dust from the body or underwear flows out of the clothes body. The cooling special clothing according to claim 1, wherein the clothing is a dust-proof clothing or rainwear having a function of preventing water.
The cooling special clothing according to claim 1 or 2, wherein the contact means is a cylindrical net-like material and has elasticity in the cylindrical outer peripheral direction.
The cooling special clothing according to any one of claims 1 to 3, wherein the contact means has water absorption.
The cooling special clothing according to any one of claims 1 to 4, wherein a monofilament is used as a thread constituting the mesh material of the close contact means.
The contact means is formed in a dress shape covering the clothing body, a portion corresponding to the trunk is formed in a substantially vest shape, and portions corresponding to other portions are separated. The cooling special clothing according to any one of 5.
The cooling special clothing according to any one of claims 1 to 6, wherein the contact means is detachably provided on the clothing body.
The cooling special clothing according to any one of claims 1 to 6, wherein the contact means is integrated with the clothing body.
An outer garment worn from above the clothing body and the contact means;
Air blowing means that takes in air from the outside and forcibly generates a flow of air in the space between the clothing body and the contact means and the outer garment;
The cooling special clothing according to any one of claims 1 to 8, wherein the special clothing for cooling is provided.