JP7449037B2 - air conditioner wear - Google Patents

Description

The present invention relates to air conditioning wear. Specifically, the present invention relates to a wearer having an air-conditioning effect for efficiently cooling the body of a wearer who wears protective clothing and works in a high-temperature environment.

For example, workers engaged in work such as transporting incineration ash or removing asbestos wear dust-proof protective clothing to protect their bodies from dust ash.
Incineration ash may maintain a high temperature, and transporting it requires work in a high-temperature environment. Asbestos removal work is carried out in a closed workplace to prevent the spread of asbestos dust, resulting in a high-temperature environment, especially in the summer.

Wearing protective clothing blocks or restricts air flow between the worker and the outside environment, making it difficult for body heat to dissipate through evaporation of sweat.
Therefore, when working in high-temperature environments while wearing protective clothing, workers are exposed to intense heat, so appropriate cooling measures must be taken to maintain workers' health and improve work efficiency. It is hoped that

Here, a high temperature environment generally means a case where the temperature is 28°C or higher, or the heat index (WBGT: Wet Bulb Globe Temperature) is 25°C (warning) or higher. do.

As a cooling means in the prior art, for example, Patent Document 1 discloses a parallel wind generating means that generates parallel wind that is approximately parallel to the body, a guide sheet that doubles as clothing for guiding the parallel wind parallel to the body, A cooling garment is described that is equipped with a power supply means for supplying power to a parallel wind generation means, etc., and is capable of blowing a predetermined amount of air between a guide sheet and underwear or the human body. As the parallel wind generating means in Patent Document 1, a side flow fan is described.
Patent Document 2 describes a clothing body that covers the body, an air guiding device that guides air in a predetermined direction along the body, and a device that takes in air from the outside to create an air flow in a space between the air guiding device and the clothing body. A special air-conditioning suit is described that is equipped with a fan, a power supply device, etc. that supplies power to the fan.

Patent Document 3 describes a low-temperature air supply device for sending cold air into protective clothing without requiring a solid type cooling medium. This low-temperature air supply device includes a so-called vortex tube that separates supplied compressed air into cold air and warm air and discharges them in two directions.

Japanese Patent Application Publication No. 2005-54299 International Publication No. 2016/071966 Japanese Patent Application Publication No. 2014-168527

Patent Documents 1 and 2 both relate to techniques for circulating air from a working environment into protective clothing. Therefore, when the temperature of the working environment is low, the techniques of Patent Documents 1 and 2 are successful and can cool the wearer. However, if the temperature of the work environment is high, hot air will be supplied into the protective clothing, and no cooling effect will be obtained.

Furthermore, there is a concern that by introducing air from the work environment into the protective clothing, the function of the protective clothing to protect the wearer by shielding him or her from the work environment may be impaired. Furthermore, there is a concern that protective clothing equipped with an air blowing fan and its power source may impair the work efficiency of the wearer.

By using the low-temperature air supply device described in Patent Document 3, it is possible to supply cold air into the protective clothing even when the temperature of the work environment is high by simply adding a simple and lightweight low-temperature air supply device to the protective clothing. It becomes possible. Further, if the source of compressed air is clean air outside the work environment, the protection of the protective clothing is prevented from being impaired. However, with the technology of Patent Document 3, although the vicinity of the cold air intake is locally cooled, the cold air does not reach areas far from the intake, resulting in insufficient cooling, or condensation occurs in locally cooled areas. In some cases, a sufficient cooling effect cannot be obtained.

Therefore, it is an object of the present invention to provide air conditioning wear that can uniformly and effectively cool the wearer's body even when the work environment is high temperature, without impairing the work efficiency or the protection of the protective clothing. With the goal.

As a result of intensive studies to achieve the above object, the inventors have arrived at the following invention.

[1] An air-conditioning garment composed of a first fabric and a second fabric,
A cold air intake port is opened in the first fabric,
The second fabric is disposed on at least a part of the first fabric on the wearer's side so as to cover the cold air intake,
The air permeability of the second fabric is greater than the air permeability of the first fabric,
Cool air is taken in from the cold air intake port of the first fabric, the taken-in cold air is stored in the gap between the first fabric and the second fabric, and the stored cold air is transferred to the second fabric. It has a configuration in which it is supplied to the wearer's body side through the
Air conditioning wear.
[2] When the air permeability of the first fabric and the air permeability of the second fabric are respectively measured according to the Frazier method of JIS L 1096:2010, the air permeability of the second fabric is The air conditioning wear according to [1], wherein the difference between the air permeability of the first fabric and the air permeability of the first fabric is 0.05 cc/cm ² ·sec or more and 400 cc/cm ² ·sec or less.
[3] The air permeability of the second fabric measured in accordance with the Frazier shape method of JIS L 1096:2010 is 0.5 cc/cm ² ·sec or more and 400 cc/cm ² ·sec or less, [1] Or the air-conditioning wear described in [2].
[4] The air conditioning wear according to [3], wherein the second fabric is made of a woven fabric, a nonwoven fabric, or a synthetic resin film having a plurality of small holes.
[5] Any one of [1] to [4], wherein the first fabric has an air permeability of less than 0.5 cc/cm ² sec as measured in accordance with the Frazier shape method of JIS L 1096:2010. The air conditioning wear set forth in paragraph 1.
[6] The air conditioning wear according to [5], wherein the first fabric is made of a woven fabric, a nonwoven fabric, a knitted fabric, or a synthetic resin film.
[7] The wearer has a back body and a front body,
The back body includes the first fabric and the second fabric,
The cold air intake port is opened in the first fabric of the back body,
The second fabric is disposed on at least a part of the first fabric constituting the back body on the wearer's side so as to cover the cold air intake,
The front body has the first fabric and does not have the second fabric,
The air conditioning wear according to any one of [1] to [6].
[8] The air conditioning wear according to any one of [1] to [7], which is to be worn over protective clothing or work clothes.
[9] The air conditioning wear according to any one of [1] to [8] above,
air compressor;
and a cold air supply device that generates cold air from a compressed air stream according to the principles of vortex theory.
[10] Using the air conditioning wear according to any one of [1] to [8] above,
Cool air is taken in from the cold air intake port of the first fabric, the taken-in cold air is stored in the gap between the first fabric and the second fabric, and the stored cold air is transferred to the second fabric. supplied to the wearer's body through
Air conditioning method.

Since the air conditioning wear of the present invention is simple and lightweight, the extent to which the wearer's work efficiency is impaired is extremely small. This air-conditioning wear can be worn over the protective clothing and can provide a cooling effect without providing an air outlet in the protective clothing, so it does not impair the protection of the protective clothing. Furthermore, this air-conditioning wear can effectively cool not only the vicinity of the cold air intake but also the wearer's body, allowing the wearer to work comfortably even in high-temperature environments.

FIG. 1 is an explanatory diagram showing the basic principle of the air conditioning wear of the present invention. FIG. 2 is an explanatory diagram showing an embodiment of the air conditioning wear device of the present invention. FIG. 3 is an explanatory diagram showing the position where the temperature sensor is mounted in the example. FIG. 4 is a photograph substituted for a drawing showing the state of the test in the example. FIG. 5 is a graph showing changes in temperature over time at each temperature sensor installation position obtained in Example 3. FIG. 6 is a graph showing changes in temperature over time at each temperature sensor installation position obtained in Comparative Example 1.

<Air conditioning equipment>
An explanatory view showing the basic principle of the air conditioning wear of the present invention is shown in FIG. 1 as a schematic cross-sectional view.
The air conditioning wear of the present invention includes:
A wearer composed of a first fabric 10 and a second fabric 20,
A cold air intake port 11 is opened in the first fabric 10,
The second fabric 20 is disposed on at least a portion of the first fabric 10 on the wearer's side so as to cover the cold air intake port 11,
The air permeability of the second fabric 20 is greater than that of the first fabric 10.

The air-conditioning wear of the present invention having such a configuration can take in the cold air 40 from the cold air intake port 11 of the first fabric 10. The taken-in cold air 40 is temporarily stored in the gap 30 between the first fabric 10 and the second fabric 20, and is supplied to the wearer's body side via the second fabric 20.
Here, when the taken-in cold air 40 is supplied to the worker's body side, it is not directly supplied, but is temporarily stored in the gap 30 between the first fabric 10 and the second fabric 20, and then It is important that it is distributed over a wide area and fed gradually through the second fabric 20.

With such a supply mode, not only the vicinity of the cold air intake port 11 but also the wearer's body can be effectively cooled all over. For example, when the cold air intake port 11 is placed on the back waist of the air conditioner, it is possible to efficiently cool not only the back waist of the wearer and its vicinity, but also the front of the body, such as the abdomen and chest. This is verified in the Examples described later by the fact that the difference in temperature measured by a plurality of temperature sensors attached to the center, front, and back of the wearer's body is small.

Here, cold air refers to a flow of air having a temperature below the environmental temperature.

To take in cold air from a cold air intake and store it in a gap between a first fabric and a second fabric, and distribute and supply the stored cold air to the wearer's body side via the second fabric. requires that the air permeability of the second fabric be greater than the air permeability of the first fabric.
Furthermore, in order to achieve a good balance between the storage effect of storing the cold air taken in and the distribution and supply effect of distributing the stored cold air to the wearer's body, it is necessary to adjust the air permeability of the second fabric. It is preferable that the difference from the air permeability of the first fabric is 0.05 cc/cm ² ·sec or more and 400 cc/cm ² ·sec or less. If the difference between the air permeability of the second fabric and the air permeability of the first fabric is excessively small, the proportion of cold air that is stored and then supplied without going through the second fabric becomes excessively large, resulting in a distribution supply. This is not preferable because the effect may be impaired. On the other hand, if the difference between the air permeability of the second fabric and the air permeability of the first fabric is too large, the supply of cold air through the second fabric becomes excessively fast, which may impair the storage effect. , undesirable.

The difference between the air permeability of the second fabric and the air permeability of the first fabric should be 0.1 cc/cm ² · sec or more, 0.3 cc/cm ² · sec or more in order to effectively express the distribution supply effect. , 0.6 cc/cm ² ·sec or more, or 0.9 cc/cm ² ·sec or more, and in order to effectively express the storage effect, 200 cc/cm ² ·sec or less, 100 cc/cm ² · sec or less, 50 cc/cm ² ·sec or less, 20 cc/cm ² ·sec or less, 10 cc/cm ² ·sec or less, or 5 cc/cm ² ·sec or less.

The air permeability of the fabric in this specification means a value measured in accordance with the Frazier method of JIS L 1096:2010.

[First fabric]
The first fabric has an air permeability of less than 0.5 cc/cm ² sec, as measured in accordance with the Frazier method of JIS L 1096:2010, in order to effectively exhibit the storage effect of the air conditioning wear equipment. It is preferable that there be. The air permeability of the first fabric is 0.4 cc/cm ²・sec or less, 0.3 cc/cm ²・sec or less, 0.2 cc/cm ²・sec or less, or 0.1 cc/cm ²・sec or less It may be made of a fabric that is not breathable at all.

The first fabric may be made of any material as long as it satisfies the above air permeability requirements and is suitable for wear, such as woven fabric, non-woven fabric, knitted fabric, synthetic resin film, etc. It may be composed of, etc.

The fibers in the woven fabric and knitted fabric constituting the first fabric may be any of vegetable fibers, animal fibers, and synthetic fibers. Examples of plant fibers include flax, hemp, kudzu, cotton, and cabbage; examples of animal fibers include wool, silk thread, etc.; examples of synthetic fibers include polyolefins (polyethylene (PE), polypropylene (PP), etc.). etc.), polyester (polyethylene terephthalate (PET), etc.), nylon, and the like.

The nonwoven fabric may be, for example, a nonwoven fabric of fibers such as polyolefin, polyester, polyamide, cellulose, and the like. Examples of polyolefin include PE, PP, etc.; examples of polyester include PET, etc.; and examples of polyamide include nylon, aramid, etc.
The synthetic resin film is preferably a thermoplastic resin film, such as polyolefin (PE, PP, etc.), polyester (PET, etc.), polyvinyl chloride, polystyrene, polyvinyl acetate, olefin-vinyl acetate copolymer ( It may be a film of ethylene-vinyl acetate copolymer (EVA), propylene-vinyl acetate copolymer (PVA), etc.), polyurethane, acrylic resin (polymethyl methacrylate, polyethyl methacrylate, etc.), or the like.

The first fabric may have no pores or may have pores as long as it satisfies the air permeability requirements described above.

The basis weight of the first fabric may be set as appropriate within a range that satisfies the above air permeability requirements and is suitable for wear, for example, in the range of 10 g/m ² or more and 1,000 g/m ² or less, preferably may be in the range of 100 g/m ² or more and 600 g/m ² or less.

A cold air intake port is opened in the first fabric. This cold air intake port is planned to be connected to some type of cold air supply means by a connecting means such as a pipe or tube when used as an air conditioning wearer.
Although the size of the cold air intake port is arbitrary, it is preferable to set the size within a range that allows for effective intake of cold air and does not interfere with work, for example, 10 cm ² or more and 500 cm ² or less, Preferably, the size is 20 cm ² or more and 200 cm ^{2 or} less.
The shape of the cold air intake port may be any shape, such as a polygon (particularly a rectangle), a circle, or an irregular shape.

The location of the cold air intake should preferably be such that it does not interfere with work and provides an effective cooling effect to the wearer when worn as an air conditioner and connected to a cold air supply means. It can be done. For example, it may be at any position on the back of the wearer, specifically, on the back shoulder, back, back waist, or the like.

[Second fabric]
The second fabric is sometimes used as air conditioning wear, in order to achieve a good balance between the storage effect of the cold air taken in and the distribution and supply effect of the stored cold air, the second fabric is a JIS L 1096:2010 flagyl type. It is preferable that the air permeability measured in accordance with the law is 0.5 cc/cm ² ·sec or more and 400 cc/cm ² ·sec or less.

The air permeability of the second fabric is 0.6 cc/cm ² sec or more, 0.8 cc/cm ² sec or more, 1.0 cc/cm ² sec or more, 2.0 cc/cm ² sec or more, 5 .0cc/cm ²・sec or more, 10cc/cm ²・sec or more, 20cc/cm ²・sec or more, 50cc/cm ²・sec or more, or 100cc/cm ²・sec or more, and 350cc/cm ²・sec or less, 300cc/cm ²・sec or less, 250cc/cm ²・sec or less, 200cc/cm ²・sec or less, 150cc/cm ²・sec or less, 100cc/cm ²・sec or less, 50cc/cm ²・sec or less, 30 cc/cm ² ·sec or less, 10 cc/cm ² ·sec or less, 5.0 cc/cm ² ·sec or less, or 3.0 cc/cm ² ·sec or less.

The second fabric may be made of any material that satisfies the above air permeability requirements and is suitable for wear, such as a woven fabric, a non-woven fabric, or a multi-perforated fabric. It may be composed of a synthetic resin film or the like.
The types of fibers in the woven fabric and non-woven fabric that make up the second fabric and the synthetic resin that make up the synthetic resin film are as explained above for the woven fabric, non-woven fabric, and synthetic resin film that make up the first fabric, respectively. You may choose from among them as appropriate.

When the second fabric is a synthetic resin film, in order to satisfy the above air permeability requirements, a large number of small holes may be formed in the synthetic resin film before use as the second fabric. The shape of the hole may be any shape, such as circular, polygonal, irregular, etc., for example.

To form small holes in the synthetic resin film, for example, a commercially available perforator, perforation machine, etc. can be used.
The size and distribution of the small pores may be set appropriately depending on the desired air permeability. For example, small holes with a circular equivalent diameter of 0.05 mm or more and 2.50 mm or less are formed in a square lattice shape, hexagonal lattice shape, etc., with an average pitch exceeding the circular equivalent diameter of the small holes and 50 mm or less. There are cases.

Since there are gaps between the fibers of a woven or non-woven fabric, if the second fabric is made of a woven or non-woven fabric, it has a certain degree of air permeability even if it does not have small pores. Sometimes.
Therefore, a woven or nonwoven fabric that satisfies the air permeability requirements for the second fabric may be selected and used as the second fabric. Further, as long as the second fabric satisfies the air permeability requirements, a woven fabric or a nonwoven fabric having a large number of small holes may be used as the second fabric. To form small holes in a woven or nonwoven fabric, for example, a commercially available perforator, perforation machine, etc. can be used.

The basis weight of the second fabric may be set as appropriate within a range that satisfies the above air permeability requirements and is suitable for wear, for example, in the range of 10 g/m ² or more and 1,000 g/m ² or less, preferably may be in the range of 100 g/m ² or more and 600 g/m ² or less.

The second fabric is disposed on at least a portion of the first fabric on the wearer's side so as to cover the cold air intake opening opened in the first fabric.
The second fabric is arranged so as to completely cover the cold air intake opening opened in the first fabric in order to effectively exhibit the effect of storing the taken-in cold air and the effect of distributing and supplying the stored cold air. The area where the second fabric is placed may be the entire inner surface of the air conditioning garment. However, in the air-conditioning wear of the present invention, even if the second fabric is not arranged over such a large area, the cold air storage effect and distribution supply effect can be effectively achieved.

The area ratio of the second fabric placed on the first fabric is large enough to completely cover the cold air intake, and is 10% or more and 20% or more of the area of the first fabric to be obtained. % or more, 30% or more, or 40% or more, and may be 90% or less, 80% or less, 70% or less, or 60% or less.
If the cold air intake port is open in a part of the rear body of the air conditioner of the first fabric, the second fabric may be arranged, for example, on the entire surface of the rear body of the air conditioner. .

[Sewing the first fabric and the second fabric]
In order to effectively exhibit the cold air storage effect and distribution supply effect, it is desirable that the second fabric be arranged so that a gap can be created between the second fabric and the first fabric. For example, there is a case where the first fabric and the second fabric are sewn together at their peripheral edges, but are not fixed to each other at other parts. In this case, the cold air taken in from the cold air intake can be temporarily stored between the first fabric and the second fabric, and then distributed and supplied via the second fabric.
As long as the cold air storage effect and distribution supply effect are effectively expressed, it is permissible to stitch and fix the first fabric and the second fabric in a partial area other than the peripheral edge.

[Shape of air conditioning wear]
The shape of the air conditioning wear of the present invention is not particularly limited as long as it has the first fabric and second fabric specified by the present invention.
Depending on the body part you want to cool, for example, vest shape, jacket shape, belly band shape, pants shape, overall shape, glove shape, shoe shape, mask shape, hat shape, goggle shape, helmet shape, shoulder bag shape, rucksack shape. It is possible to take any shape such as.

However, at work sites in high-temperature environments, cooling the worker's upper body over a wide area is considered effective in lowering the worker's perceived temperature, so clothing that covers at least a portion of the upper body An air-conditioning garment having the shape of is suitable.

This air conditioning wear has, for example, a back body and a front body,
The back body has a first fabric and a second fabric,
A cold air intake port is opened in the first fabric of the back body,
The second fabric is disposed on at least a part of the first fabric constituting the back body on the wearer's side so as to cover the cold air intake,
The front body has a first fabric and does not have a second fabric,
It may be an air conditioning garment.

Furthermore, in such air conditioning wear, the front body is divided into a left front body and a right front body, and the left front body and right front body are removably joined by a zipper, which facilitates the attachment and detachment of the air conditioning wear. It is preferable from the viewpoint of Such an embodiment is advantageous when the air conditioning wear of the present invention is worn over protective clothing.

Examples of particularly preferable air conditioning wear equipment in the present invention include vest type, jacket type, overall type, etc. From the viewpoint of balance between work efficiency and cooling efficiency when worn, Mention may be made of air conditioning wear in the form of a vest without sleeves and a hood, or in the form of a jacket with at least one, preferably both, of sleeves and a hood.

Cooling parts of the worker's body through which large blood vessels pass is effective in lowering the worker's perceived temperature. Therefore, in the air conditioning wear of the present invention, it is preferable to provide a sleeve that covers the axillary artery, a hood that covers the carotid artery, etc. from the viewpoint of obtaining an efficient cooling effect.

In a preferred embodiment of the present invention, the cuffs, the opening of the hood, the hem of the body, etc. are restricted to prevent the cold air from leaking out unnecessarily, thereby improving the effect of storing and distributing the cold air. be.

FIG. 2 shows an example of a jacket-shaped air-conditioning garment having sleeves and a hood. FIG. 2(a) is a front view, and FIG. 2(b) is a left side view.
The air conditioning wear 100 shown in FIGS. 2(a) and 2(b) has a back body 50 and a front body 60.
FIG. 2(c) is an enlarged sectional view of a portion of the back body 50 shown in the left side view of FIG. 2(b).

Referring to the enlarged sectional view of the back body 50 shown in FIG. 2(c), it will be understood that the back body 50 includes a first fabric 10 and a second fabric 20. A cold air intake port 11 is opened at a position corresponding to the rear waist of the first fabric 10 of the rear body 50. The second fabric 20 is disposed on the wearer's side of the first fabric 10 constituting the back body 50 so as to cover the cold air intake port 11. This second fabric 20 is arranged, for example, on the entire surface of the back body 50, and is sewn and fixed to the first fabric at the peripheral edge, and is not fixed at other parts than the peripheral edge. With such a configuration, a gap 30 can be formed between the first fabric 10 and the second fabric 20.
On the other hand, the front body 60 of the air conditioning wear 100 has the first fabric 10 but does not have the second fabric. The front body 60 is divided into a left front body 61 and a right front body 62, and these left and right front bodies are removably joined by a fastener.

The air conditioning wear 100 of FIG. 2 further includes sleeves (short sleeves) 70 and a hood 80, which enable cooling of the axillary artery and carotid artery, respectively, thereby enhancing the cooling effect. In addition, the hem of the back body 50 and the front body 60, the cuffs of the sleeves 70, and the opening of the hood 80 (where the face is exposed) are squeezed, for example, with rubber apertures, so that cold air does not leak out unnecessarily. is suppressed, and the cold air storage effect and distribution supply effect are improved.

[Cold air supply]
Cold air generated by an appropriate cold air supply means is supplied from the cold air intake port opened in the first fabric.
As the cold air supply means used here, an appropriate means can be selected from those applicable to the work environment of the worker. For example, an air conditioner, a heat pump, etc. can be used, and it is advantageous to use a cold air supply device that generates cold air from a compressed air flow based on the principle of vortex theory. This device is described, for example, in Patent Document 3.

In this cold air supply device, compressed air supplied from a compressed air supply port is first turned into a vortex within a tube-shaped device, and the pressure, density, and temperature of the outer vortex are increased by the centrifugal force of the vortex. Move to. At the hot air outlet, a part of the hot air is discharged to the outside of the device by a flow rate regulating valve, while the remaining part passes through the low-pressure vortex center and moves toward the cold air outlet. The air moving in the center of the vortex decelerates while expanding and performs work on the outer vortex through a braking action. Therefore, the air moving in the center of the vortex is discharged to the outside of the device from the cold air outlet in a state where the temperature is lowered due to the removal of heat.

This cold air supply device can supply cold air using this principle, and since it does not require any electricity other than to operate the air compressor to generate compressed air, it is inexpensive and compact, which reduces costs and costs. Even if maximum work efficiency is considered, it is easy to allocate one unit to one or a small number of workers.

This cold air supply means is commercially available from various companies under trade names such as vortex tube, vortex cooler, air cooler, and jet cooler.

Such a cold air supply device that generates cold air from a compressed air flow based on the principle of vortex theory connects the compressed air supply port to an air compressor, and then connects the cold air outlet to the cold air intake of the air conditioning wear of the present invention. Used in conjunction. These connections may be made, for example, by suitable connection means such as pipes, tubes, etc.

[How to apply air conditioning wear]
The air-conditioning wear of the present invention is suitable for being worn by a worker while working in a high-temperature environment.
The air conditioning suit of the present invention can be worn over protective clothing, work clothes, etc. worn by workers for work. Therefore, it is particularly effective for cooling the bodies of workers who work in high-temperature environments while wearing protective clothing.

When using the air conditioning wear of the present invention by wearing it on protective clothing, innerwear may be worn between the air conditioning wear and the protective clothing. By wearing inner wear made of woven fabric, non-woven fabric, knitted fabric, etc. made of appropriate materials, a layer of air can be provided between the air conditioning wear of the present invention and the protective clothing, further improving the cooling effect. can do.
This innerwear may be, for example, vest-type, jacket-type, or the like. By wearing a jacket-type inner wear with sleeves (short sleeves) between the air conditioning wear equipment of the present invention and the protective clothing, the cooling effect of the worker's axillary artery is improved and the perceived temperature becomes lower. ,preferable.

<Air conditioning equipment system>
In another aspect of the present invention, the above-described air conditioning wear of the present invention,
air compressor;
An air-conditioning garment system is provided that includes a cold air supply device that generates cold air from a compressed air stream according to the principles of vortex theory.

<Air conditioning method>
In yet another aspect of the present invention, using the above-described air conditioning wear of the present invention,
Cold air is taken in from the cold air intake port of the first fabric, the taken in cold air is stored in the gap between the first fabric and the second fabric, and the stored cold air is delivered to the wearer's body via the second fabric. An air conditioning method is provided.

<<Test at temperature 34°C, relative humidity 50%RH, heat index 29°C>>
Examples 1 to 8 and Comparative Example 1 were conducted in a constant temperature and humidity room with an air temperature of 34°C, a relative humidity of 50% RH, and a heat index (WBGT: Wet Bulb Globe Temperature) of 29°C (strict alert). The test was conducted.

<Examples 1 to 8>
In a constant temperature and humidity room adjusted to the above environment, a life-sized mannequin in an upright position was made to wear dust-resistant protective clothing (Tyvek (registered trademark) software type III, manufactured by Asahi-DuPont Flashspan Products Co., Ltd.). On top of the protective clothing, an inner vest (AC Vest R inner vest manufactured by Takashina Life Support Co., Ltd.) was further worn.

A total of 11 temperature sensors were attached to a mannequin wearing protective clothing and an inner vest: 3 in the center, 4 in the front, and 4 in the back. As shown in the front view of FIG. 3(a) and the rear view of FIG. 3(b), the temperature sensor is installed at the following 11 locations.
Central region: mid-abdomen (C1), mid-posterior neck (C2), and mid-posterior back (C3)
Front part: left front chest (F1), right front chest (F2), left front waist (F3), and right front waist (F4)
Back: Left side of the back shoulder (R1), right side of the back shoulder (R2), left side of the back hip (R3), and right side of the back hip (R4)
At this time, the temperature sensor at the center of the rear neck (C2) was attached to the protective suit, and the temperature centers at other positions were attached to the inner vest.

After attaching the temperature sensor as described above, the mannequin was made to wear the air conditioning wear of each example. The tested air conditioning wear was a jacket type with a hood and short sleeves, having the shape shown in FIG.

This jacket has a front body, a back body, a hood, and short sleeves made of the first fabric, and these constitute the main shape of the jacket. The first fabric of the back body has a rectangular cold air intake opening at the center of the waist, about 10 cm long and about 5 cm wide.

A second fabric is disposed over the entire surface of the first fabric of the back body on the side facing the wearer's body, so that the second fabric covers the cold air intake opening in the first fabric. The peripheral edge of the second fabric is sewn to the first fabric of the back body. In the back body, the first fabric and the second fabric are not sewn and fixed except for the peripheral edges, and the cold air taken in from the cold air intake is stored in the gap between the two fabrics, and then the second fabric is sewn together. It can be distributed and supplied to the wearer through the fabric.

The jacket does not have the second fabric in any part other than the back body.
The front body of the jacket is divided into a left front body and a right front body, and these left and right front bodies are removably joined by a fastener.
The jacket's hood is sewn to the vest body all around the neck, and the edges are rubberized, so when the left and right front zippers are fully tightened, only part of the face is exposed. It is configured as follows.
The hem of the front and back body and the ends of the short sleeves are each rubber-finished.

As the first fabric, a nonwoven fabric made of polypropylene was used in Examples 1 to 7, and a film made of polypropylene was used in Example 8. The air permeability of each of these first fabrics was measured according to the Frazier method of JIS L 1096:2010, as shown in Table 1.
As the second fabric, a large number of small holes were formed in a polypropylene nonwoven fabric, and the air permeability was adjusted to the values listed in Table 1, respectively, as measured in accordance with the Frazier method of JIS L 1096:2010. I used the one I made.
The small holes in the second fabric were formed using a commercially available perforator, and the air permeability was adjusted by changing the diameter and pitch of the small holes to be formed.

A vortex tube (Man Cooling System, manufactured by Vortex) was used as the cold air supply device.
The cold air intake port opened in the first fabric of the back body of the air conditioning wear obtained in each example was connected to the cold air outlet of the vortex tube, and the compressed air supply port of the vortex tube was connected to an air compressor (Co., Ltd. ) connected to Nikken's MAX series).

Then, the air compressor is operated to continuously supply compressed air at a pressure of 0.5 MPa from the compressed air supply port of the vortex tube, and the 11 temperature sensors attached to the mannequin measure the temperature at each temperature sensor installation position. was measured over time.
The measurement results are shown in Table 1 as the average temperature from 15 minutes to 180 minutes after the start of cold air supply.

<Comparative example 1>
Air conditioning wear was manufactured and evaluated in the same manner as in Example 1, except that a three-dimensional knitted fabric with an air permeability of 450 cc/cm ² ·sec was used as the second fabric.
The evaluation results are shown in Table 1.

The state of the test in the example is shown in FIG. 4 as a photograph substituted for a drawing. FIG. 4(a) is a front view, and FIG. 4(b) is an enlarged left side view.
In addition, Fig. 5 shows the temperature change over time at each temperature sensor installation position obtained in Example 3, and Fig. 6 shows the temperature change over time at each temperature sensor installation position obtained in Comparative Example 1.
shown respectively. Figures 5(a) and 6(a) are for the central part of the body, Figures 5(b) and 6(b) are for the front part, and Figures 5(c) and 6(c) are for the back part of the body. This is a graph of

<<Test at temperature 36°C, relative humidity 50%RH, heat index 31°C>>
<Examples 9 and 10>
In Example 9, the air conditioning wear manufactured in Example 1 above was
In Example 10, the air-conditioning equipment manufactured in Example 3 above was used, except that the environment of the constant temperature and humidity room was changed to 36 degrees Celsius, relative humidity 50% RH, and heat index 31 degrees Celsius (dangerous). , Evaluation was performed in the same manner as in Example 1.
The evaluation results are shown in Table 2.

1 Protective clothing 2 Inner vest 10 First fabric 11 Cold air intake 20 Second fabric 30 Gap 40 Cold air 50 Back body 60 Front body 61 Left front body 62 Right front body 70 Sleeves 80 Hood 100 Air conditioning wear C1, C2, C3, F1, F2, F3, F4, R1, R2, R3, R4 Temperature sensor mounting position

Claims (7)

An air-conditioning garment having a back body and a front body, and comprising a first fabric and a second fabric,
A cold air intake port is opened in the first fabric,
The second fabric has an area on at least a part of the first fabric on the wearer's side so as to completely cover the cold air intake , and has an area of 40% or more of the area of the first fabric. It is arranged in proportion ,
The air permeability of the second fabric is greater than the air permeability of the first fabric,
When the air permeability of the first fabric and the air permeability of the second fabric are respectively measured according to the Frazier shape method of JIS L 1096:2010,
The second fabric has an air permeability of 20 cc/cm ² ·sec or more and 400 cc/cm ² ·sec or less,
The difference between the air permeability of the second fabric and the air permeability of the first fabric is 0.05 cc/cm ² ·sec or more and 400 cc/cm ² ·sec or less,
The second fabric is sewn to the first fabric at a peripheral edge thereof, and is not fixed at a portion other than the peripheral edge,
The back body includes the first fabric and the second fabric,
The cold air intake port is opened in the first fabric of the back body,
The second fabric is disposed on at least a part of the first fabric constituting the back body on the wearer's side so as to cover the cold air intake,
The front body has the first fabric and does not have the second fabric,
Cool air is taken in from the cold air intake port of the first fabric, the taken-in cold air is stored in the gap between the first fabric and the second fabric, and the stored cold air is transferred to the second fabric. It has a configuration in which it is supplied to the wearer's body side through the
Air-conditioning equipment to be worn over dust-proof protective clothing . The air conditioning wear according to claim 1, wherein the second fabric is made of a woven fabric, a nonwoven fabric, or a synthetic resin film having a plurality of small holes. The air conditioning wear according to claim 1 or 2, wherein the first fabric has an air permeability of less than 0.5 cc/cm ² ·sec measured in accordance with the Frazier shape method of JIS L 1096:2010. The air conditioning wear according to claim 3, wherein the first fabric is made of a woven fabric, a nonwoven fabric, a knitted fabric, or a synthetic resin film. The air conditioning wear according to any one of claims 1 to 4, which is intended to be worn over protective clothing or work clothes. The air conditioning wear according to any one of claims 1 to 5,
air compressor;
and a cold air supply device that generates cold air from a compressed air stream according to the principles of vortex theory. Using the air conditioning wear according to any one of claims 1 to 5,
Cool air is taken in from the cold air intake port of the first fabric, the taken-in cold air is stored in the gap between the first fabric and the second fabric, and the stored cold air is transferred to the second fabric. supplied to the wearer's body through
Air conditioning method.

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