KR101175776B1 - Underwear air jacket which has low noise air diffuser - Google Patents

Abstract

Disclosed are a belt-type air jacket and a belt-jacket-type cold air supply device using the same, which are manufactured to be worn as underwear in various industrial work clothes. Belt-type air jacket 100, the core configuration of the present invention is characterized in that the diffusion nozzle is provided in the air discharge port to prevent the waste of compressed air and to reduce the noise and light weight and wear comfort. At least two shoulder bands 20 of which air hose B 32 is arranged in a slight length on the waist belt 10 in which the air hose A 31 is arranged, and the external air hose connector 34 Configured to deliver externally supplied compressed air through the The material of the shoulder band 20 is to prevent the outer band 22 through the air, part of the inner band 21 is formed of a breathable material through the air and the shoulder band side air hose B (32) is the waist belt side air The hose A (31) extending in the length range of about 4 ~ 10cm is arranged up along the shoulder band (20). At this time, the air hose B 32, the length arranged on the back of the wearer is made longer than the length arranged on the back of the wearer at the same time taking into account the work activity and air distribution performance and the venturi tube-shaped diffusion nozzle ( 40) is further coupled, but the anti-vibration plate 45 is further formed in the diffusion nozzle to prevent the shaking of the outer band as much as possible.
The present invention has a low noise generation and compressed air consumption, wear and activity is improved, the production cost is low. In addition, since the pressure decrease is small during the noise reduction process, it is possible to connect the intermediate cooling device, which was difficult to attempt by reducing the discharge pressure in the conventional air jacket.

Description

Underwear air jacket which has low noise air diffuser}

The present invention relates to a belt-type air jacket made to be worn as underwear in various industrial work clothes, and more particularly, to a high-efficiency cold wind supply structure that prevents waste of compressed air and achieves low noise, light weight, and improved fit. will be.

Air jackets, which supply cold or warm air to individual workers by connecting hoses to compressed air tanks, which are widely provided in various industrial sites, have been used in various working environments for a long time.

The following document (1) relates to a typical jacketed air belt published in 1980, and introduces a structure that blows air to the wearer's body by appropriately sealing and passing air through the fabric belt. have.

The air belt of the document (1) has the advantage of good fit because there is no foreign matter such as a hose in the belt portion. However, in order to lower the pressure and increase the flow rate of the compressed air supplied to the belt, a compressed air distribution plate having a plurality of flat air passages is mounted on the back. Thus, the compressed air distribution plate for properly distributing high-pressure compressed air is a metal plate in design strength. It has to be made so heavy and cumbersome that it is a major cause of poor work efficiency.

In the cooling jacket of document (2), instead of connecting to the belt by using the heavy compressed air distribution plate as described above, the air hose for directly discharging the compressed air is properly disposed in the jacket so that a plurality of air outlets are provided along the air hose. will be. This is a proper design at first glance, which shows some effective cooling performance. However, when directly connected to a high-pressure compressed air pipe, a large amount of noise is generated from a plurality of discharge ports, which causes considerable noise throughout wearing time. The thickness and resistance of the air hose cause a heterogeneity, which causes a disadvantage of poor fit.

In order to avoid excessive injection noise of compressed air, there is a configuration in which an auxiliary refrigerant is inserted into the air hose to use low pressure air and to compensate for the lack of air injection. Literature (3) is a heavy equipment that is very heavy for human wear as a whole and the life of the charged refrigerant is short and can only be used for short periods of time in extremely harsh conditions for exploration, rescue, etc.

On the other hand, there is another air jacket to avoid the discharge noise of the compressed air. Referring to the document (4), a large part of the compressed air supplied to the jacket is thrown out through the silencer using a known vortex tube mechanism, and only a part of the air is supplied into the jacket at a low pressure. Since the air supplied into the jacket is under reduced pressure (no air can be blown away), it is almost impossible to distribute air by a well-ventilated cloth belt, and only through the air hose formed inside the jacket, where small discharge holes are sparse Is possible. Literature (4) also suffers from poor fit due to heterogeneity due to the air hose embedded in the belt and inflexible hose texture. The price is expensive and the belt portion is excessively heavy, there is a disadvantage, the amount of compressed air that is wasted is also difficult to be used by multiple operators at the same time.

(1) United States Patent Publication US 4,194,247 Wearable ventilation system (2) United States Patent Application Publication US 2005/0055753 Airvest human body cooling apparatus (3) United States Patent Publication US 7,827,624 Combined clothing garment / Air cooling device (4) Korean Patent Publication 10-2011-0085220 Air Jacket using Vortex Tube

As mentioned above, all air jackets in use today have some advantages and disadvantages. Let's reclassify this in terms of conflict.

First of all, if you want to improve the air distribution performance (evenly spread throughout the body) by using the air hose, when the work clothes are put on the jacket, the foreign material caused by the hose on the shoulders, back and armpits is increased and it is difficult to bend the hose material. As a result, the work activity is drastically reduced.

On the contrary, if the belt-type distribution method using a breathable fabric is used, the thin and natural fit is very satisfactory, while the flow resistance is greatly increased due to the flatly pressed fabric, so that the air is intensively discharged only near the air inlet of the belt. It is difficult to spread evenly throughout the body. In other words, the two design methods are opposite to each other.

Another conflicting design characteristic is the relationship between the pressure of the supplied air and the noise generated.

Usually compressed air used in industrial sites has a pressure in the range of approximately 7-10 kgf / cm 2. This pressure causes considerable noise, such as odors or beeps, when released into the atmosphere with a conventional air hose with a diameter of 5 to 12 mm.However, temporary air emissions from the operation of pneumatic machine tools are unavoidable. A prolonged noise from work clothes, an unsupported but auxiliary tool, can have a serious impact on the working environment and work efficiency.

To prevent this, noise can be reduced if the compressed air supplied to the jacket air hose can be gradually lowered to low pressure during the discharge process. However, as shown in the literature (4), if the discharged air is lowered to low pressure by the external air discharge by the silencer, the consumption of compressed air is greatly increased and may affect the operation of the main pneumatic machine in the workplace. The best way to do this is to spray high pressure compressed air into small holes in small increments to minimize noise. However, this is also not a fundamental solution because the sudden drop in compressed air energy prevents compressed air from propagating along the belt in the jacket. In addition, as metal precision parts such as silencer and air flow control valve are added to the individual worker's work clothes, which are not core work tools, the unit price and weight of the work clothes increase, and the fit and activity of the work wear decreases.

The object of the present invention is to supplement the air jacket performance characteristics of the contrary side, which was difficult to overcome by the conventional air jacket as described above, and to improve the advantages and disadvantages, specifically, to reduce the consumption of compressed air, and to improve the noise and fit. In addition, the production cost of the jacket can be lowered to have excellent merchandise.

Key technical means of the present invention for achieving the above-described specific objects are as follows.

First, the waist belt (10) and the shoulder bands (20) forming the jacket body are fabricated in the form of a cloth belt, but the air hose is selectively arranged around the waist belt and a part of the shoulder band through which compressed air is supplied, and the air hose of the shoulder band B (32) is configured to rise slightly above the waist belt (10) and the remaining radio path is made of breathable fabric of the inner shoulder band so as not to affect the fit of the jacket or the activity of the upper body.

Next, a venturi tube-shaped diffusion nozzle 40 is attached to the discharge port portion of the air hose B in the longitudinal shoulder band 20, and the bursting sound (by rapid diffusion of compressed air) generated at the discharge hole of the air hose B 32 is obtained. Reduced as much as possible.

On the other hand, in order to catch the uncomfortable noise generated by the compressed air discharged from colliding with the fabric of the shoulder band 20 and the outer band 22, the diffusion nozzle 40 has an air spray guide plate centering on a portion that meets the outer band 22. The anti-shake plate 45 was formed to serve.

The anti-shake plate 45 extends in the direction in which the shoulder band 20 extends, that is, in the longitudinal direction, and serves as a spray guide passage, and also serves as a diffusion guide plate. Suspenders) were formed relatively short, and the wearer's dorsal (back suspenders) was formed relatively longer in consideration of the diffusion performance and noise reduction performance.

Due to the unique air supply and distribution diffusion structure as described above, the present invention can use the high pressure compressed air in a low noise state as much as possible, and has a cold air effect and an air distribution effect due to a smooth diffusion induction structure that maximizes the rapid discharge speed of the compressed air. You can increase it.

According to the present invention, compared with the conventional air jacket, the noise generation amount and the compressed air consumption amount are improved in fit and activity, and the manufacturing cost can be lowered. In addition, due to the small pressure drop during the noise reduction process, the effective injection pressure can be achieved even if an auxiliary device with high pipeline resistance such as a refrigerant evaporation pipe is used. Therefore, the conventional air jacket has an excellent effect that can be used in addition to the intermediate cooler connection method that was difficult to try to reduce the discharge effect.

1 is an external perspective view of an embodiment of the present invention air jacket
Figure 2 is a wearing state of the present invention air jacket embodiment
Figure 3 optionally shows the air hose and the diffusion nozzle
Figure 4 shows the inner band side in the air jacket of Figure 1 unfolded state
5, 6, and 7 illustrate the arrangement, coupling structure, and air diffusion structure of the diffusion nozzle in the air jacket embodiment of the present invention.
8 is a conceptual view of the combination of the present invention belt jacket type cold air supply device embodiment

With reference to the embodiment of the present invention included in the drawings in order to technically support the above-described solution of the present invention will be described in detail.

However, in the following specific embodiments, components including specific terminology and combinations thereof do not limit the technical spirit inherent in the present invention.

First, the overall structure of the belt-type air jacket 100 embodiment, which is the central configuration of the present invention, will be described based on FIGS. 1, 5, and 6.

In the illustrated embodiment, the air hose A 31 is basically arranged on the waist belt 10 and the air hose B 32 is arranged on the two shoulder bands 20 in a slight length and the outer air hose connector is arranged. 34 is configured to deliver externally supplied compressed air through the T-shaped tube joint 33 to the air hose A 31 throughout the circumference of the stomach and dorsal side. The material of the shoulder band 20 makes the outer band 22 not to pass through the air, and part of the inner band 21 is formed of a breathable material through the air. If necessary, the number of shoulder bands can be increased (to 2 to 4) or the shape can be modified (to X-shape, etc.), and the waist buckle (11), chest buckle (12), horizontal band (13), etc. Applicable as appropriate. In this embodiment, the air hose A (31) and the shoulder band in the sewn structure of the horizontal band 13 toward the basis that the air does not propagate.

The overall jacket material is made of synthetic fiber cloth considering the fit, but the outer band 22, which is a sealed structure that does not pass through air, is made of a windproof cloth material made of nylon or polyester used for a tent and made of breathable material. By blowing air toward the body, the inner band 21 is preferably made of a polypropylene main component used for a sack. In this case, the outer band wraps around the inner band so that the stitch is sewn and the width of the inner band varies depending on the width of the sewn band, and accordingly, the discharge amount of air can be adjusted. May be intentionally localized in the vicinity of the mounting part).

Relatively less foreign material of the waist belt (10) is not particularly limited and is configured to completely fill the horizontally arranged air hose A (31) and the vertically arranged air hose B (32) portion of the shoulder band (20) Only a small amount of reclamation causes the air to spread from the waist to the chest and back, gradually spreading throughout the upper body.

The effect of the present invention is best exerted when the work clothes are put on the jacket 100, the air blown through the jacket stays trapped in the work clothes for a certain time. Since the shape, clothing thickness, material, etc. of work clothes required for various industrial sites vary, the simpler and thinner the belt type as in the present embodiment, the more comfortable and work efficiency is compared to the air spraying effect.

On the other hand, the external hose connecting pipe 34 for supplying the compressed air to the air hose A (31) is formed of a material that can be distorted when a certain amount of force is applied to the operator directly by using the air flow regulator (50) Configure to be adjustable. In order to lower the jacket production price, a simple presser type air flow regulator that cannot completely close the tube is preferable.

3, 4, and 7 illustrate the air injection structure and the air propagation structure which are the key features of this embodiment.

Basically, the shoulder band side air hose B 32 extends from the waist belt side air hose A 31 in a length range of about 4 to 10 cm and is arranged up along the shoulder band 20. At this time, the air hose B 32, the length arranged on the back of the wearer is made longer than the length arranged on the wearer's back to consider the work activity and air distribution performance at the same time.

In the embodiment, the length of the air hose B is vertically raised to about 5cm on the dorsal side and about 7cm on the dorsal side, and it is set to about 6cm on the dorsal side and about 8cm on the dorsal side including the part covered by the diffusion nozzle. This length can be adjusted appropriately to the size of the jacket and the standard size of the human body. The shorter the length, the lower the air-distribution performance and the better work activity. In consideration of the working posture, which should be bent frequently in any case, the stomach is slightly shorter and the dorsal side is slightly longer. Corresponds to the technical idea of

A venturi tube-shaped diffusion nozzle 40 is further coupled to the discharge hole of the air hose B 32 to uniformly flow without pressure loss as much as possible by the mechanism of primary contraction of compressed air, uniformity of flow through parallel flow, and secondary uniform diffusion. Promote diffusion. This is directly related to noise reduction, and the pressure drop is low, so the air is propagated as far along the shoulder band as possible, and there is also sufficient margin for pressure loss when an intermediate cooling device is described later.

In the present embodiment, the outer shape of the venturi tube-type diffusion nozzle 40 is shown as an example of the design value. The length of the nozzle fitting portion 41 is 1 cm, the length of the nozzle shrinking portion 42 is 0.8 cm, and the nozzle parallel portion 43. The length is 0.3cm, the length of the nozzle diffusion portion 44 may be about 2cm. In order to reduce noise and flutter, the basic design concept is that the diffusion length of the venturi tube is longer than the length of the constriction. In addition, the internal parallel flow path of the nozzle parallel part 43 considering the nozzle thickness for a more uniform and smooth flow. The length is preferably set at least 0.3 ~ 0.5cm or more.

Meanwhile, the diffusion nozzle 40 may further include an anti-shake plate 45 for preventing the vibration of the outer band 22 at the end of the diffusion portion.

The anti-vibration plate 45 is formed along the air spray direction of the diffusion nozzle 40, and the inner band side is a breathable material and is in contact with the body, and thus rarely shakes in a worn state. Therefore, the anti-shake plate 45 is formed only on the side in contact with the outer band 22 to prevent the strong compressed air directly hit the outer band.

Here, the anti-vibration plate 45 may be about (2cm on the back and 3.5cm on the back side) in consideration of the activity when wearing the aforementioned jacket, and this also in consideration of the technical features peculiar to the present invention in consideration of noise reduction performance and work activity. Corresponding.

The diffusion nozzle 40 and the anti-vibration plate 45 need to be properly fixed so as not to play from side to side in the shoulder band 20. Specifically, the stitching shape of the shoulder band is narrow in a portion where the diffusion nozzle and the anti-vibration plate are located. It is desirable to be sewn (not to shake left and right), and to be sewed gradually over the anti-vibration plate to induce effective diffusion propagation of air.

In this embodiment, based on the outer diameter of the air hose 0.8cm, nozzle outer diameter 1cm, belt width 4cm, in the narrowly sewn portion, the outer band wraps the inner band as much as about 3cm (1.5cm left and right) and then toward the shoulder As you climbed, it slowly widened to be stitched in a form of wrapping about 1cm (0.5cm left and right).

8 is a conceptual view of the coupling and operation of the belt jacket type cold air supply device of the present invention connecting the air jacket 100, the compressed air supply device 200 and the air cooling device 300 of the present embodiment.

Compressed air is supplied at room temperature through an external hose connecting pipe 34 of the air jacket 100 or cooled through an air cooling device 300 disposed in the compressed air delivery path as shown in the accompanying drawings, and then supplied in a cold state. Can be.

Compressed air supply device 200 consisting of an air tank and a compressor, and a refrigerant evaporation device and a refrigerant condensing device, and the air cooling device 300 for cooling the compressed air is a common configuration widely used in industrial sites All external hoses connecting the associated devices are adjustable in length, allowing the operator to have a wide range of behavior.

While the embodiments of the present invention have been described in detail with reference to the drawings, the technical spirit of the present invention is not limited to the above embodiments.

In other words, one of ordinary skill in the art may implement a simple change and a simple extension case that are not included in the specification and the drawing as needed by utilizing the technical spirit included in the specification and the drawing. This is also obviously included in the scope of the technical spirit of the present invention represented by the following claims.

The present invention describes a cold wind vest using a cooling device, but if necessary, it is also possible to use a hot air vest for warming purpose if the diffusion nozzle is changed to a metal and a heat coil using heat transfer is applied. At this time, unlike the cooling device, the heat coil for heating may be wound directly on the air hose and inserted into the belt.

10: waist belt
11: waist buckle
12: Chest buckle
13: horizontal band (chest, dorsal)
20: shoulder band
21: (shoulder) inner band
22: (shoulder) outer band
31: (Waist belt side) Air hose A
32: (Shoulder band side) Air hose B
33: T type joint
34: outer hose connector
40: diffusion nozzle
41: nozzle fitting
42: nozzle shrinkage
43: nozzle parallel part
44: nozzle diffusion unit
45: Anti Shaking Plate
50: air volume controller
100: air jacket
200: compressed air supply device
300: air cooling device

Claims (6)

delete A waist belt 10 having an air hose A 31 arranged therein;
At least two shoulder bands 20 coupled to the waist belt 10 and having air hoses B 32 arranged therein;
And an external air hose connector 34 connected to the air hose A 31 to deliver compressed air supplied from the outside.
The shoulder band 20 is the outer band 22 is formed of a material through which no air, at least a portion of the inner band 21 is formed of a cloth material through the air,
The air hose B (32) is a belt type air jacket 100, characterized in that arranged in the air hose A (31) up along the shoulder band 20 in the length range of 4 ~ 10cm. The method of claim 2,
The air hose B (32), the belt-shaped air jacket 100, characterized in that the length arranged on the back of the wearer is longer than the length arranged on the wearer's back. The method of claim 3,
The discharge hole of the air hose B (32) is a belt-type air jacket 100, characterized in that the venturi tube-shaped diffusion nozzle 40 is further coupled. The method of claim 4, wherein
At the end of the diffusion portion of the diffusion nozzle 40, an anti-shake plate 45 formed along the air injection direction is further formed, and the anti-shake plate 45 is formed only on the side adjacent to the outer band 22. Belt type air jacket (100). An air jacket (100) according to claim 2;
Compressed air supply device 200 is composed of an air tank and a compressor connected to supply the compressed air to the air jacket 100; And
An air cooling device (300) comprising a refrigerant evaporation device and a refrigerant condensation device and disposed in the compressed air delivery path between the air jacket 100 and the compressed air supply device 200 to cool the compressed air; Belt jacketed cold air supply device configured to include.

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