JP2002364196A - Rest room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rest room capable of quickly discharging dust-contained indoor air without stagnation, and keeping the inside at positive pressure to prevent intrusion of polluted air, while preventing air that could not be discharged from flowing back. SOLUTION: A suction device 4 for sucking indoor air and a discharge device 3 for discharging ventilating airflow of uniform velocity and direction to the suction device 4 are installed indoors at the sides of the rest room. The amount of air discharged by the discharge device 3 is made greater than the amount of air admitted by the suction device 4 and the inside of the room is divided by a partition 7 into a rest space 5 on the discharge device 3 side and an access space 6 on the suction device 4 side while leaving a flow passage 13 behind through which the ventilating airflow passes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rest room suitable for being installed in a mine such as a tunnel.

[0002]

2. Description of the Related Art A variety of dusts enter a break room installed in a tunnel pit due to outside air when a user enters and exits, adhesion to a user's clothes and shoes, smoking in a break room, and the like. In order to remove this dust, in the conventional break room,
A positive pressure damper is attached to the prefabricated house, and a ventilation system equipped with a fan and a filter is installed outside the room. The outside air after filtering the dust with the filter is forcibly supplied from outside the room (in the pit) to the inside of the prefabricated house. By applying a positive pressure to the room with a damper, exhaust of room air and prevention of intrusion of outside air are performed. At the same time, indoor air is circulated for purification.

[0003] Such a ventilation method is called dilution ventilation,
Since the generated dust once diffuses to the surroundings, it is gradually diluted and its concentration decreases, so that it takes a long time from the start of ventilation until the indoor dust concentration decreases sufficiently. However, actually, the use of the break room is short, and ventilation is performed only during this short use time, so it takes time from the start of the break time until the break room can be used, In many cases, it was not suitable for the actual situation, such as a short break.

Further, since the prefabricated house and the ventilation equipment are not integrated, a piping work and a connection work are required at the time of installation. In particular, in the tunnel construction, the rest room must be moved in accordance with the progress of the construction, but each time such a troublesome installation work has to be performed, which is troublesome. Furthermore, a smoking room provided with ventilation equipment such as a ventilation fan has been known as one adopting a ventilation method similar to dilution ventilation. However, a simple ventilation fan, etc., does not have a function to create a stable ventilation flow with a stable wind speed and direction in the room, so the smoke near the indoor suction port for exhaust is exhausted to the outside, but the smoke stays at a slightly distant position. Would. In addition, since the room has a negative pressure, dust is mixed therein.

[0005] As a ventilator for producing a ventilation flow having a uniform wind speed and direction in a room, there is a push-pull type ventilator which is often installed in a factory or the like which performs welding work or uses an organic solvent. In this method, a blowing device that blows an air current having a uniform wind speed and direction into a room and an air intake device are installed. However, in the case of push-pull ventilation, the amount of air blown in from the room is larger than the amount of air blown out into the room so that all dust caught by the ventilation flow can be discharged. For this reason, a negative pressure is generated in the room, and outside air containing a large amount of dust easily enters the rest room in the mine. If the amount of air blown out is larger than the amount of air blown in, a part of the dust-containing air leaks out without being sucked in, and the leaked air flows backward to join the ventilation flow. As a result, the rest room user is exposed to the ventilation flow containing dust.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to discharge dust-containing indoor air quickly without stagnation and to prevent the intrusion of dirty outside air by keeping the room at a positive pressure, thereby enabling exhaust to be completed. It is an object of the present invention to provide a rest room that can prevent no air from flowing back to the rest space.

[0007]

The rest room according to the present invention is provided with an air suction device for sucking indoor air and a blower device for blowing out a ventilation flow having a uniform wind speed and direction to the air suction device near both sides of the room. With each installed, the air volume blown out by the air blower is made larger than the air flow blown in by the air intake device, and the interior of the room is partitioned by a partition, leaving a passage for ventilation flow, a rest space on the air blower side, and an entrance on the air intake side. It is partitioned into space.

[0008] The ventilation flow blown out from the blowing device pushes the room air containing the dust toward the suction device, and the suction device sucks the airflow to remove the dust. With the configuration in which the amount of air blown by the blowing device is made larger than the amount of air blown by the intake device, the room is maintained at a positive pressure to prevent outside air from entering. The partition blocks indoor air that cannot be sucked in by the air intake device, preventing backflow to the rest space. By installing the blowing device and the suction device in the room, installation work and piping work of these devices in the mine are not required.

A suction port and a flow path of the intake device are provided at a lower portion of the room, and a positive pressure damper for exhausting while maintaining the room at a positive pressure is provided at an upper portion of the entrance / exit space, thereby filtering air and outside air sucked by the intake device. It is also possible to provide a filtering device for supplying the air to the blowing device. Dust that has entered the vicinity of the floor of the entrance / exit space, such as mud attached to the user's shoes, and dust generated in the lower part of the rest space due to smoking of the user are diffused by the ventilation flow by the blowing device and the suction device. Remove immediately before. The dust in the upper part of the room is gradually diluted and ventilated with a positive pressure damper. An air conditioner may be interposed between the filtering device and the blowing device so that the humidity and the temperature can be appropriately adjusted.

[0010]

FIG. 1 to FIG. 1 show a first embodiment of the present invention. As shown in FIG. 1, the rest room 1 is composed of a break room main body such as a prefabricated house 2, a blowing device 3 and an air intake device 4 installed on both sides of the room, and a rest space near the blowing device 3 in the room. A partition made up of a curtain 7 partitioned into an entrance space 6 near the intake device 5, a positive pressure damper 8 installed above the entrance space 6, and a filtration device 9 installed below the entrance space 6. Prepare.

The prefabricated house 2 has a highly sealed structure. In the entrance space 6, an entrance 10 is provided on the outer wall of the prefabricated house 2, and the floor of the entrance space 6 is a floor for putting on and taking off shoes. . On the opposite side of the rest space 5, an outside air intake 11 is formed at the lower part of the outer wall of the entrance space 6, and this outside air intake 11 is formed.
A filtration device 9 is installed below the entrance space 6. In addition, it is convenient to attach a rack or the like for storing a helmet or other equipment to the inner surface of the entrance space 6. In the rest space 5, the floor of the prefabricated house 2 is one step higher, and finishing materials such as tatami mats and carpets are laid as needed.

The curtain 7 is made of a material that is flexible and can be bent like a goodwill, and is made of a durable material that does not tear off. As shown in FIG. 3, a plurality of divided pieces 12 are arranged such that both sides thereof overlap by about 10 cm. Further, the upper end of the curtain 7 is attached to an angle member 19 or the like directly attached to the ceiling 20 of the prefabricated house 2 so that there is no gap between the ceiling 20 and the curtain 7. Further, as shown in FIGS. 1 and 4,
The lower end of the curtain 7 is about 1 m above the floor of the entrance space 6 and slightly higher than 70 cm above the floor of the rest space 5. Then, between the lower end of the curtain 7 and the floor, a flow path 13 of the ventilation flow from the blowing device 3 to the intake device 4 is formed.

The blow-out device 3 blows out a ventilation flow having a uniform wind speed and direction to the intake device 4 side. Installed toward Here, the ventilation flow having a uniform wind speed refers to an airflow in which the wind speed in each part of the outlet does not vary and is preferably within ± 20% of the average wind speed.

The suction device 4 has a suction air flow rate smaller than that of the blowing device 3 and has a built-in filter. Further, the suction device 4 is incorporated into the filtration device 9 such that the suction port thereof is located below the entrance / exit space 6 and faces the flow path 13. Further, the filtering device 9
Is connected to the blowing device 3 through a duct 14 that penetrates the curtain 7, and as shown in FIG.
5 is installed, and an air conditioner 16 is interposed at the base of the duct 14. The intake device 4 is connected to the fan 15 via a built-in filter.

A filter box 17 is provided inside the filtering device 9 so as to face the air intake port 11.
This filter box 17 is also connected to the fan 15. Therefore, the room air sucked by the intake device 4 and the outside air taken in from the air intake 11 are separated by the filtering device 9.
Then, the dust is removed, and the humidity and temperature are adjusted to an appropriate level by the air conditioner 16 before being supplied to the blowing device 3. The positive pressure damper 8 is for exhausting the room while keeping the room at a positive pressure. The positive pressure damper 8 is installed on the opposite side of the rest space 5 and above the entrance space 6.

As shown in FIG. 4, the ventilation flow blown out from the blowing device 3 is sucked by the suction device 4 through the rest space 5, the flow path 13 and the entrance / exit space 6. On the way, the ventilation flow promptly flushes out dust generated at a height of about 70 cm above the floor of the rest space 5 due to smoking and dust adhering to the user's shoes and entering the floor of the entrance space 6 near the floor. Then, dust contained in the room air sucked by the intake device 4 is removed by a filter in the filtering device 9,
The purified room air is taken in from the outside air intake 11 and is supplied to the blowing device 3 through the duct 14 by the fan 15 together with the outside air from which dust is removed by the filter box 17.

Since the blowing air volume of the blowing device 3 is larger than the suction air volume of the suction device 4, a part of the dust is not sucked and remains in the room.
Is gradually discharged. In addition, since the interior of the room is maintained at a positive pressure by making the amount of air blown out larger than the amount of air blown in, even if the doorway 10 is opened and closed, outside air containing a large amount of dust hardly enters the inside of the rest room 1. In order to further enhance the effect of preventing outside air from entering, the entrance 1
A blind made of an airtight material such as a vinyl sheet may be attached to the upper part of the zero. If a partition such as a curtain 7 is not provided as shown in FIG. 5, room air containing dust that could not be completely sucked in by the air intake device 4 will flow into the rest space 5.
It flows back to the side.

(Test 1) The difference in the dust discharge effect between the ventilation flow flowing to the intake device 4 side and the general air flow was compared by changing the direction of the ventilation flow from the blowing device 3. As shown in FIG. 6, the height from the floor of the entrance space 6 to the lower end of the curtain 7 is 1000 mm, and the height of the rest space 5 is 300 mm.
Dust is generated by a divergent source 18 consisting of incense sticks placed at a height of mm, and the blowing direction of the blowing device 3 is alternately changed between the side of the suction device 4 () and the position directly below (), so that the change over time of the dust concentration is obtained. FIG. 7 shows the results measured at point A near the blowing device 3, point C near the curtain 7, and point B in the middle, at a height of 700 mm above the floor of the rest space 5. From the results of Test 1, when the uniform flow was blown out directly below, the dust concentration at the point C near the curtain 7 was high, whereas when blown out toward the intake device 4, the dust concentration at the point C was low. It was found that it rapidly decreased.

(Test 2) From the blowing device 3 to the suction device 4
The dust discharge effect when ventilating flow was blown out to the side was examined.
The inside of the rest room 1 is filled with dust, and the blowing device 3 and the suction device 4 are operated. As shown in FIG. 8, a point A at a height of 1500 mm above the floor of the entrance space 6 and a height of 1500 mm above the floor of the rest space 5 are provided. The change over time in the dust concentration was measured at point B at point C, point C at a height of 500 mm, and point D outside the room. As a result, as shown in FIG. 9, at all the measurement points in the rest room 1, the dust concentration was reduced to the control concentration (0.832 mg / m ³ ) or less within 1 minute after the operation of the device.

(Test 3) As shown in FIG. 10, the entrance 10 is opened and the entrance 1 in the rest room 1 is opened.
The change over time in the dust concentration at point A near 0 and point B outside the room was measured, and the results are shown in FIG. From this test result, since the inside of the rest room 1 was at a positive pressure, the entrance 1
Even when 0 was opened, the dust concentration in the rest room 1 did not change at a low level, indicating that no outside air had entered.

(Test 4) As shown in FIG. 12, the height from the floor of the entrance space 6 to the lower end of the curtain 7 is 1000
and a divergent source 18 composed of ten incense sticks is placed at a height of 300 mm above the floor of the rest space
At a height of 0 mm, a point A near the blowing device 3;
The dust concentration at point B near the dust source 18 was measured for 10 minutes, and the average is shown in FIG. In the comparative example under the same conditions except that the curtain 7 was omitted, the dust concentrations at points A to C were measured for 10 minutes, and the average is shown in FIG. As a result, it can be understood that when the curtain 7 is attached, the dust concentration in the rest space 5 is lower than when the curtain 7 is not provided, and the curtain 7 prevents the air containing dust from flowing back to the rest space 5.

[0022]

According to the first aspect of the present invention, since the ventilation flow blown out from the blowing device pushes the room air containing the dust toward the intake device, the dust in the room is quickly removed before diffusing. be able to. Further, since the amount of air blown by the blowing device is larger than the amount of air blown by the intake device, the room is maintained at a positive pressure. As a result, even if the door is opened and closed, it is possible to prevent outside air containing dust from entering the room. It is possible. Further, the room air that cannot be sucked in by the air intake device is not blocked by the partition and does not flow back to the rest space. Further, since the blowing device and the suction device are installed indoors, installation work of these devices and piping work for connecting these devices to the rest room main body are not required.

According to the second aspect of the present invention, since the ventilation flow passes through the lower part of the rest room, dust that has entered the vicinity of the floor of the entrance space like mud or the like attached to the user's shoes, and
Dust generated in the lower part of the rest space due to smoking of the user can be quickly removed before spreading. In addition, the room air containing dust that could not be completely sucked in by the air intake device is gradually diluted and ventilated while maintaining the room positive pressure by the positive pressure damper. According to the invention according to claim 3, it is possible to appropriately adjust the humidity and temperature of the ventilation flow blown out from the blowout device.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rest room showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a break room, showing the filter device in an enlarged manner.

FIG. 3 is a perspective view of a curtain.

FIG. 4 is a cross-sectional view of a rest room for explaining airflow in a room.

FIG. 5 is a cross-sectional view of a break room for explaining an airflow when there is no curtain.

FIG. 6 is a side cross-sectional view illustrating test 1.

FIG. 7 is a graph showing the results of Test 1.

FIG. 8 is a side cross-sectional view illustrating test 2.

FIG. 9 is a graph showing the results of Test 2.

FIG. 10 is a cross-sectional plan view illustrating test 3.

FIG. 11 is a graph showing the results of Test 3.

FIG. 12 is a side sectional view illustrating test 4;

FIG. 13 is a table showing the results of Test 4;

FIG. 14 is a table showing test results of a comparative example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rest room 2 Prefab house 3 Blow-out device 4 Intake device 5 Break space 6 Doorway space 7 Curtain 8 Positive pressure damper 9 Filtration device 10 Doorway 11 Outside air intake 12 Split piece 13 Flow path 14 Duct 15 Fan 16 Air conditioner 17 Filter box 18 Source of radiation 19 Angle wood 20 Ceiling

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuki Fujishiro 7th, Yonbancho, Chiyoda-ku, Tokyo In-house (72) Inventor Sadao Hasegawa 2-8-1, Shintomi, Chuo-ku, Tokyo Inside Tanizawa Seisakusho F-term (reference) 3L053 BD02 3L058 BE08 BG01

Claims (3)

[Claims] 1. An air suction device for sucking indoor air, and a blowing device for blowing a ventilation flow having a uniform wind speed and direction to the suction device side are installed near both sides of the room, and the blowing device blows the air. The air volume was made larger than the suction air volume by the intake device, and the room was partitioned by a partition into a rest space on the side of the blower device and an entrance / exit space on the side of the intake device, leaving a flow path through which the ventilation flow passed. A break room characterized by the following. 2. A suction port of the suction device and the flow path are provided at a lower portion of the room, and a positive pressure damper for exhausting the room while maintaining a positive pressure is installed at an upper portion of the entrance / exit space, and the suction device sucks the air. The rest room according to claim 1, further comprising a filtering device that filters air and outside air and supplies the filtered air and the outside air to the blowing device. 3. The rest room according to claim 2, wherein an air conditioner is interposed between the filtering device and the blowing device.