JP5476433B2 - Chemical discharge system - Google Patents

Description

  The present invention relates to a chemical substance discharging system for discharging chemical substances generated when an operator works indoors to the outside of the room.

  In general, in a pathology laboratory, since a chemical substance such as formaldehyde is handled, there is a risk that an operator may be exposed to the chemical substance and harm health. Therefore, conventionally, various techniques for discharging chemical substances to the outdoors have been proposed in order to ensure the safety of workers in such an environment.

  As a related art of this type, for example, a chemical substance is installed in a box-shaped chamber body whose front surface is opened, and the chemical substance is placed outside through a duct connected to the chamber body. A draft chamber configured to exhaust (see Patent Document 1), or a local exhaust configured to exhaust the chemical substance before it diffuses into the room by bringing the exhaust port close to the immediate vicinity of the chemical source. Device, or a push-pull type ventilator equipped with a push hood that blows air at a constant wind speed from the opening surface and a pull hood that collects and sucks the push airflow (see Patent Documents 2 and 3), or An air supply / exhaust device that forms an air curtain by supplying air from the end and exhausts air so that it is sucked from the center of the hood (see Patent Document 4), or blown from the floor to the ceiling A ventilating system (see Patent Document 5) that forms a smoking space and other spaces by exhausting part of the air outside the room and blowing it out again from the ceiling to the floor as an air curtain is known. is there.

Utility model registration No. 3076991 Japanese Patent Laid-Open No. 10-47722 JP 2007-003156 A JP 2001-124381 A JP 2001-33072 A

  However, in the conventional draft chamber described above, a large box-shaped chamber main body is installed on the work table, so that a large space for installing the chamber main body and a large facility for installing the draft chamber are required. There is a problem of becoming.

  In addition, the above-mentioned conventional local exhaust system requires a duct for exhausting chemical substances, and the duct is an obstacle to work, and a large exhaust amount is required to sufficiently exhaust chemical substances. Thus, there is a problem that the air conditioning energy for treating the outside air becomes large.

  In addition, in the conventional push-pull type ventilator described above, it is necessary to install a ventilator beside or above the work table and the like, and an installation space for the air supply / exhaust duct is required, which hinders work. There's a problem.

  Further, the conventional air supply / exhaust device described above is mainly intended to remove water vapor and combustion exhaust gas in the kitchen, and since these gases are high in temperature, an updraft is generated, but chemical substances such as formaldehyde In the exhaust air, no updraft is generated unlike the kitchen. Therefore, when the above-described conventional air supply / exhaust device is used for discharging chemical substances, there is a problem that the chemical substances diffuse in the entire air curtain and the air cannot efficiently flow to the exhaust port.

  Further, in the conventional ventilation system described above, a part of the indoor air in which the pollutants are generated is circulated and used for the air curtain. From the air curtain, about 4 m / s necessary for separating the room is used. Requires air to blow out at wind speed. Therefore, when the conventional ventilation system described above is used for discharging chemical substances, the operator feels a draft due to the air blown out from the air curtain, so that it is difficult to improve the working environment, It is possible that the chemical substance is rolled up indoors by the air from the air, so the concentration of the chemical substance in the air curtain increases, and the entire air curtain cannot be used as a work space. When the air blowing speed of the air is low, there is a problem that a short circuit occurs and a good working environment cannot be formed.

  The present invention has been made to solve the above-described various problems, and an object thereof is to provide a chemical substance discharge system capable of ensuring worker safety and improving workability. .

  In order to achieve the above-described object, the present invention provides a chemical substance discharge system for discharging a chemical substance generated when an operator works indoors to the outside of the room. A work table for placing the generation source; a ceiling outlet provided above an end of the work table on the operator side; and the front of the work table with respect to the worker from the end on the operator side. A fan unit provided on a work table; and a ceiling inlet provided above the fan unit, wherein the fan unit is provided so as to face the chemical source, and the ceiling. An air outlet provided so as to face the air inlet, and the air blown vertically downward from the ceiling air outlet is from the end of the work table on the operator side. After the chemical substance is collected in the process of flowing along the work table toward the entrance, it is blown vertically upward from the outlet by the fan unit, and is discharged to the outside through the ceiling outlet. It is characterized by.

  According to this feature, the chemical substance generated from the source is reliably discharged to the outside through the air flow from the ceiling outlet to the ceiling inlet through the fan unit, and diffused to the worker's breathing area. Since it can prevent, the chemical substance exposure amount to an operator can be reduced and the safety | security of work can be improved. In addition, the air supply ducts and exhaust ducts are not exposed in the room except for the fan unit installed on the work table, and the area with high chemical concentration is from the fan unit to the ceiling inlet. Since it is only a limited space and a wide work space can be secured, workability can be improved.

  Moreover, the chemical substance discharge system which concerns on this invention WHEREIN: The hanging wall may be provided in the said ceiling suction inlet side edge part of the said ceiling outlet.

  According to this feature, it is possible to prevent the air blown from the ceiling outlet from being short-circuited to the ceiling inlet.

  In the chemical substance discharge system according to the present invention, a rectifying grid may be provided at the ceiling outlet.

  According to this feature, air is more easily blown out directly from the ceiling outlet, and the amount of air diffusion to the surroundings is reduced. The amount can be reduced, and a short circuit from the ceiling outlet to the ceiling inlet can be more reliably prevented.

  Moreover, in the chemical substance discharge system according to the present invention, a hood may be provided around the ceiling suction port.

  According to this feature, air blown vertically upward from the blowout port of the fan unit can be reliably collected in the ceiling suction port, and can be more reliably prevented from diffusing into the room.

  Further, in the chemical substance discharge system according to the present invention, an inclined panel may be provided in the hood, and the ceiling suction port may be provided in the panel.

  According to this feature, the air blown vertically upward from the blowout port of the fan unit is reliably sucked into the ceiling suction port along the panel by the Coanda effect, so that air leakage to the outside of the hood can be prevented. .

  Further, in the chemical substance discharge system according to the present invention, a chamber box is provided on the work table so as to communicate with the suction port of the fan unit, and the generation source of the chemical substance is placed on the upper surface of the chamber box. A suction port may be provided on the upper surface of the chamber box in the vicinity of the chemical source.

  According to this feature, the chemical substance can be quickly recovered from the upper surface of the chamber box, which is the generation surface of the chemical substance, into the chamber box via the suction port, so that the diffusion of the chemical substance can be prevented more reliably. The amount of chemical substances exposed to workers can be reduced, and safety can be further improved. In addition, the source of the chemical substance and the suction port of the chamber box are very close to each other, and the exhaust efficiency can be increased, so that the amount of air supply and exhaust can be reduced and the energy saving effect can be improved. it can.

  The chemical substance discharge system according to the present invention further includes a chemical substance removing device that removes the chemical substance from the air exhausted from the ceiling suction port, and the chemical substance removing device removes the chemical substance from the air. May be configured to be blown into the room through the ceiling outlet and circulate.

  According to this feature, the air from which chemical substances have been removed by the chemical substance removing device can be circulated in the room to reduce the amount of outside air processing, so that the air conditioning energy for outside air processing can be reduced. Energy saving effect can be obtained.

  Further, in the chemical substance discharge system according to the present invention, the fan unit is provided at an end opposite to the end on the operator side, and the work table is provided between the end on the opposite side and a wall in the room. May be arranged close to the wall to the extent that the worker cannot pass, or the work table can be passed between at least two different end portions and the indoor wall. The ceiling outlet may be provided above at least two different end portions of the work table.

  According to this feature, since the worker cannot pass near the area where the chemical substance concentration from the fan unit to the ceiling inlet is high, the exposure amount of the chemical substance to the worker can be further reduced. The safety can be further improved.

  According to the present invention, it is possible to obtain various excellent effects such as ensuring safety of workers and improving workability.

It is a mimetic diagram showing the whole chemical substance discharge system composition concerning an embodiment of the invention. It is a perspective view which shows three-dimensionally the chemical substance discharge system which concerns on embodiment of this invention. The result of having performed the CFD analysis of the effect | action of the chemical substance discharge system which concerns on embodiment of this invention is shown, (a) is a wind speed vector diagram, (b) is a concentration distribution map of formaldehyde. It is a perspective view which shows the modification of the ceiling outlet of the chemical substance discharge system which concerns on embodiment of this invention. It is a side view which shows the modification of the ceiling suction inlet of the chemical substance discharge system which concerns on embodiment of this invention. It is a schematic diagram which shows the modification of the chemical substance discharge system which concerns on embodiment of this invention. It is a schematic diagram which shows another modification of the chemical substance discharge system which concerns on embodiment of this invention. It is a schematic diagram which shows another chemical substance removal apparatus in another modification of the chemical substance discharge system which concerns on embodiment of this invention. It is a schematic diagram which shows another modification of the chemical substance discharge system which concerns on embodiment of this invention. It is a schematic diagram which shows another modification of the chemical substance discharge system which concerns on embodiment of this invention.

  Hereinafter, a chemical substance discharge system according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the chemical substance to be removed of the present invention is formaldehyde, and the concentration of formaldehyde in the room is 0.1 ppm or less of the control concentration specified in the specific chemical substance prevention rules. An example will be described.

  FIG. 1 is a schematic diagram showing an overall configuration of a chemical substance discharge system according to an embodiment of the present invention, and FIG. 2 is a perspective view three-dimensionally showing the chemical substance discharge system according to the embodiment of the present invention. . This chemical substance discharge system includes a work table 1 placed on a floor in a pathological examination room, a fan unit 2 placed on the work table 1, a ceiling outlet 3 and a ceiling inlet 4 attached to the ceiling. And an outside air processing air conditioner 6 connected to the ceiling outlet 3 via the air supply duct 5, and an exhaust fan 8 connected to the ceiling inlet 4 via the exhaust duct 7. .

  The work table 1 includes a horizontally-long rectangular top plate 9 and legs 10 attached to four corners on the lower surface side of the top plate 9, and a pathological examination is performed so that the operator P can pass around the work table 1. Located in the center of the room. On the work table 1, a chemical substance generation source 11 is placed approximately at the center in the longitudinal direction of the long-side end 1 a, and the operator P faces the generation source 11 during the work. At the time of work, the worker P may be in any posture of standing or sitting on a chair, and the length of the leg portion 10 is set in accordance with the posture of the worker P.

  The fan unit 2 is disposed on the long-side other end 1b in front of the worker P from the long-side one end 1a of the work table 1, and is a horizontally-long rectangular parallelepiped casing along the longitudinal direction of the work table 1. 12 and a fan 13 disposed inside the casing 12. In the casing 12, a suction port 13 is provided on a side surface 12 a facing the chemical substance generation source 11, and an outlet port 14 is provided on an upper surface 12 b, and the fan unit 2 has a blowing air velocity of 3 from the outlet port 14. It is set to be 0 m / s or less. In addition, you may attach a baffle plate (not shown) to the blower outlet 14 of the fan unit 2, and this blows off the air suck | inhaled from the suction inlet 13 vertically upwards without diffusing more. Can do.

  The ceiling outlet 3 and the ceiling inlet 4 are both formed in a horizontally-long rectangular shape along the longitudinal direction of the work table 1 so that the length in the long side direction is substantially equal to the length of the work table 1. Is formed. Moreover, it is preferable that the length of the short side direction of the ceiling outlet 3 and the ceiling inlet 4 is 0.5 m or less. Furthermore, the air blown vertically downward from the ceiling outlet 3 is air from the operator P. The blowout air speed is determined to be 0.5 m / s or less so that the comfort of the worker P is not impaired even if it hits, and sufficient airflow can be secured to recover the chemical substances on the work table 1. It is preferable.

  The ceiling outlet 3 is disposed above one end 1a on the long side of the work table 1, and the ceiling inlet 4 is disposed above the fan unit 2. The amount of air blown from the ceiling outlet 3 is The suction air volume from the ceiling suction port 4 is set to be the same value. The ceiling outlet 3 and the ceiling inlet 4 are parallel to each other, and the distance between the end of the ceiling outlet 3 and the end of the ceiling inlet 4 is 0.3 considering the size of the work table 1 and the like. It is preferable to arrange it to be -0.7 m.

  A hanging wall 15 such as an acrylic panel or a roll screen is suspended from the end of the ceiling outlet 3 on the ceiling suction port 4 side, and the height of the hanging wall 13 is preferably 1.0 m or less. Preferably, it is 0.3-0.7 m. In addition, when an air conditioner (not shown) such as a fan coil unit (FCU) is installed in the room in order to process the heat load in the pathological examination room, it does not interfere with the formation of an air flow for discharging chemical substances. In addition to installing the air conditioner at the place, as shown in FIG. 2, it is preferable to attach a hanging wall 16 to the end of the ceiling outlet 3 opposite to the ceiling suction port 4. It is preferable that the height is lower than the hanging wall 15 on the suction port 4 side.

  A hood 17 is suspended around the ceiling suction port 4, and the height of the hood 17 is preferably 0.7 m or less. Instead of hanging the hood 17, the ceiling part to which the ceiling suction port 4 is attached may be recessed upward to form a folded ceiling.

  The outside air processing air conditioner 6 includes a cold water coil 19, a hot water coil 20, a humidifier 21, and an air supply fan 22 arranged in this order from the upstream side in the air flow direction inside a box-shaped casing 18. It is configured and installed in the space behind the ceiling or in the air conditioning machine room.

  Next, the operation of the chemical substance discharge system according to the embodiment of the present invention having the above-described configuration will be described.

  First, outside air taken into the outside air treatment air conditioner 6 from the outside is cooled or heated by the cold water coil 19 or the hot water coil 20 in the outside air treatment air conditioner 6 and is humidified by the humidifier 21 to have a predetermined temperature and humidity. Adjusted to air. Thereafter, the air is sent out from the outside air processing air conditioner 6 by the air supply fan 22, and blown out vertically from the ceiling outlet 3 through the air supply duct 5 into the pathological examination room. At this time, since the hanging wall 15 is attached to the ceiling outlet 3, it is possible to prevent the air blown from the ceiling outlet 3 from being short-circuited to the ceiling inlet 4.

  The air blown vertically downward from the ceiling outlet 3 flows toward the worker P facing the chemical generation source 11 and flows toward the long-side end 1 a of the work table 1. When air hits the long side end 1a of the work table 1, it flows along the upper surface of the work table 1 from the long side end 1a toward the suction port 13 of the fan unit 2 by the Coanda effect.

  In the process in which air flows along the upper surface of the work table 1 in this way, the chemical substance generated from the generation source 11 on the work table 1 rides on this air flow and is sucked into the suction port 13 of the fan unit 2 to be blown out. 14 is blown vertically upward. The air collected in this manner and blown vertically upward from the blowout port 14 is directed to the ceiling suction port 4, passes through the exhaust duct 7, and is discharged to the outside by the exhaust fan 8.

  FIG. 3 shows the result of CFD (Computational Fluid Dynamics) analysis of the chemical substance discharge system according to the embodiment of the present invention. (A) is a wind velocity vector diagram, (b) is a concentration distribution diagram of formaldehyde. is there.

  According to FIG. 3A, the air blown out from the ceiling outlet 3 flows vertically downward without a short circuit, and when it hits one end 1a on the long side of the work table 1, it passes vertically through the fan unit 2. It can be seen that an air flow that is blown upward and sucked into the ceiling suction port 4 is formed.

  Further, according to FIG. 3B, the air from which the chemical substance (formaldehyde) has been collected passes through the fan unit 2, overflows from the hood 17 and does not diffuse into the pathological examination room, but is sucked into the ceiling suction port 4 and externally. It can be seen that it is discharged.

  As described above, since the hood 17 is attached to the ceiling suction port 4, the air blown vertically upward from the blower port 14 of the fan unit 2 is surely collected by the ceiling suction port 4 and enters the pathological examination room. Diffusion can be prevented. At this time, the amount of air blown from the outlet 14 of the fan unit 2 is preferably set to 1/4 to 1/2 of the amount of air sucked from the ceiling inlet 4, and further from the outlet 14 of the fan unit 2. It is preferable that the blowing air speed is set to 3.0 m or less. And by setting in this way, it can prevent more reliably that the air which blown off from the blower outlet 14 of the fan unit 2 overflows from the hood 17, and spread | diffuses in a pathological examination room.

  As described above, according to the chemical discharge system according to the embodiment of the present invention, the air supply duct, the exhaust duct, and the like are exposed in the pathological examination room, except that the fan unit 2 is installed on the work table 1. Therefore, a large work space in the room can be secured, and workability can be improved.

  Moreover, since the fan unit 2 is only installed on the work table 1 and is easy to install, the workability can be improved.

  Further, chemical substances generated from the generation source 11 are prevented from being diffused into the breathing area of the worker P by being discharged to the outside through the air flow from the ceiling outlet 3 through the fan unit 2 to the ceiling inlet 4. Therefore, the safety of work can be improved.

  In addition, since the region where the chemical substance concentration is high in the pathological examination room is only a limited space from the fan unit 2 to the ceiling suction port 4, the space other than this space can be widely used as a work space. Further improvement in performance can be achieved.

  Further, since the air blowing speed from the ceiling outlet 3 is adjusted to be 0.5 m / s or less, even if this air hits the worker P, the comfort of the worker P is not impaired. An air flow sufficient to recover the chemical substances on the work table 1 can be ensured.

  As shown in FIG. 4, a rectifying grid 23 may be attached to the ceiling outlet 3 instead of the hanging walls 15 and 16. In this case, air is more easily blown out from the ceiling outlet 3 and the amount of air diffusion to the surroundings is reduced, so that the diffusion of the chemical substance can be prevented more reliably and the exposure amount of the chemical substance of the worker P And a short circuit from the ceiling outlet 3 to the ceiling inlet 4 can be more reliably prevented.

  Further, as shown in FIG. 5, an inclined panel 24 may be attached in the hood 17, and the ceiling inlet 4 may be provided in the panel 24. In this case, since the air blown vertically upward from the air outlet 14 of the fan unit 2 is sucked into the ceiling air inlet 4 along the panel 24 by the Coanda effect, air leakage to the outside of the hood 17 can be prevented. . Thereby, the diffusion of the chemical substance into the pathological examination room can be prevented, the chemical substance exposure amount to the worker P can be reduced, and the safety can be further improved.

  FIG. 6 is a schematic view showing a modified example of the chemical substance discharge system according to the embodiment of the present invention. In this modified example, the chamber is connected to the suction port 13 of the fan unit 2 on the work table 1. A box 25 is placed. The chemical substance source 11 is placed on the upper surface 25a of the chamber box 25, and the upper surface 25a is used as a work table. The upper surface 25a is adjacent to the chemical substance source 11. A suction port 26 is provided in the main body.

  In the case of this modification, the chemical substance can be quickly recovered from the upper surface 25a of the chamber box 25, which is the generation surface of the chemical substance, into the chamber box 25 through the suction port 26, so that the diffusion of the chemical substance is more reliably performed. Therefore, it is possible to reduce the exposure amount of the chemical substance to the worker P, and to further improve the safety. Further, since the chemical substance source 11 and the suction port 26 of the chamber box 25 are very close to each other and the exhaust efficiency can be increased, the supply amount and the exhaust amount can be reduced, and the energy saving effect can be achieved. Can be increased.

  FIG. 7 is a schematic view showing another modification of the chemical substance discharge system according to the embodiment of the present invention. In this modification, the chemical substance is removed from the air discharged from the ceiling suction port 4. The chemical substance removing device 30 is provided, and the air from which the chemical substance has been removed by the chemical substance removing device 30 is blown out from the ceiling outlet 3 and circulated again.

  As this chemical substance removal device 30, for example, a device described in Japanese Patent Application Laid-Open No. 2011-110079 by the same applicant as this case can be used, and this device is arranged along the direction of air flow. In order from the upstream side, a dust removal filter 31, a formaldehyde removal section 32, a water washing section 33, and a blower 34 are disposed. And in the formaldehyde removal section 32, a liquid tank 35 for storing the formaldehyde remover, and a liquid contact part constituted by two stages of gas-liquid contact media 36 for bringing the formaldehyde remover into contact with air, A circulation pump 37 and a circulation pipe 38 for circulating a formaldehyde removing agent between the liquid contact portion and the chemical tank 35 are provided, and formaldehyde contained in the air is removed by an air washer method. Yes. Further, the water washing section 33 has a water washing medium 40, a water supply pipe 41 for supplying water to the water washing medium 40 from above, and a waste water from the water washing medium 40 returned to the chemical tank 35 and a valve. A drainage pipe 42 that discharges to the outside by switching (not shown) is provided, and the water washing medium 40 receives the scattering of the formaldehyde removal agent from the formaldehyde removal section 32.

  As another example of the chemical substance removing apparatus 30 ', an apparatus constituted by an aldehyde removing apparatus 50 and a removal liquid supply apparatus 60 can be used as shown in FIG. In this case, the aldehyde removal apparatus 50 is provided with a dust removal filter 51, an aldehyde removal section 52, a drain up pump 53, a dust removal filter 54, and a blower 55 in order from the upstream side in the direction of air flow. The removal liquid supply device 60 is provided with two storage tanks 61, flow path switching valves 62 and 63, a removal liquid transporting pump 64, and a pure water replenishing device 65, and aldehyde removal The operation of supplying the removal liquid from the removal liquid supply device 60 to the apparatus 50 and the operation of stopping the supply are repeated.

  As shown in FIGS. 7 and 8, in the modification in which the chemical substance removing devices 30 and 30 ′ are installed, the air from which the chemical substances are removed by the chemical substance removing devices 30 and 30 ′ is circulated in the room. Since the amount of outside air processing can be reduced, the air-conditioning energy for outside air processing can be reduced, and a further energy saving effect can be obtained.

  Specifically, for example, the outdoor air concentration is 0.005 ppm, the indoor concentration is 0.100 ppm, the concentration after passing through the chemical substance removing devices 30 and 30 ′ is 0.010 ppm (that is, the chemical substance is 90% of the indoor concentration). Removal), the amount of outside air introduced into the outside air processing air conditioner 6 when the chemical substance removing devices 30, 30 'are not installed is 100, and the amount of outside air introduced into the outside air processing air conditioner 6 when the chemical substance removing devices 30, 30' are installed. Is calculated by assuming that 30 and the passing air volume of the chemical substance removing devices 30 and 30 ′ are 70, respectively.

  Then, when the chemical substance removing device 30, 30 'is installed, the concentration becomes 0.0085ppm when the outside air and the air after passing through the chemical substance removing device 30, 30' are mixed, so the indoor concentration is reduced to 0.100ppm. In order to maintain the air volume, 1.7 times the air volume required when the chemical substance removing devices 30, 30 ′ are not installed is required. Therefore, the amount of outside air introduced into the outside air processing air conditioner 6 is 100 × 0.3 × 1.7 = 51, and when the chemical substance removing devices 30 and 30 ′ are installed, the chemical substance removing devices 30 and 30 ′. The amount of outside air introduced can be reduced by about 50% compared to the case where no is installed. That is, it can be seen that an air conditioning load of about 50% can be reduced as an energy saving effect.

  9 and 10 are schematic views showing still another modified example of the chemical substance discharge system according to the embodiment of the present invention. In the modified example of FIG. 9, the work table 1 has the other end on the long side. Between 1b and the indoor wall W, it arrange | positions close to the wall W so that the operator P cannot pass.

  Further, in the modification of FIG. 10, as in the case of the above-described embodiment of the present invention, the work table 1 is arranged at substantially the center in the pathological examination room so that the worker P can pass therearound. However, the fan unit 2 is disposed at the center of the work table 1, the ceiling suction port 4 is disposed above the fan unit 2, and the ceiling outlet 3 is provided in two different end portions 1 a and 1 b of the work table 1. It is arrange | positioned above. In this case, the work table 1 is not necessarily arranged at the center of the pathological examination room as long as the work table 1 is arranged so that the operator can pass between the end portions in at least two different directions and the wall W in the room. It does not have to be.

  In the case of the modification shown in FIGS. 9 and 10, the worker P cannot pass near the area where the chemical substance concentration from the fan unit 2 to the ceiling suction port 4 is high. The exposure amount of the chemical substance to P can be further reduced, and the safety can be further improved.

  In addition, since description of embodiment of this invention mentioned above has described the preferred embodiment in the chemical substance discharge | emission system which concerns on this invention, it may attach various technically preferable restrictions. However, the technical scope of the present invention is not limited to these embodiments unless specifically described to limit the present invention. That is, the above-described components in the embodiment of the present invention can be appropriately replaced with existing components and the like, and various variations including combinations with other existing components are possible. The description of the embodiment of the present invention described above does not limit the contents of the invention described in the claims.

1 Work table 1a One end on the long side (end on the worker side)
1b Long side other end (opposite end)
2 Fan unit 3 Ceiling outlet 4 Ceiling inlet 11 Source of chemical substance 15 Dripping wall 17 Hood 23 Rectifier grid 24 Panel 25 Chamber box 25a Upper surface 26 Suction inlet 30, 30 'Chemical substance removal device P Worker W Wall

Claims (9)

A chemical substance discharge system for discharging chemical substances generated when an operator works indoors to the outside of the room,
A work table for mounting the source of the chemical substance when the worker works;
A horizontally-long rectangular ceiling outlet provided along the operator-side end vertically above the operator-side end of the work table;
A fan unit oblong rectangular parallelepiped which is provided in parallel to the end portion of Oite the worker side on the front of the work table as a reference from the acting skill end of the operator side,
A horizontally-long rectangular ceiling inlet provided in parallel with the ceiling outlet at a position vertically above the fan unit;
With
The fan unit has a suction port provided so as to face the generation source of the chemical substance, and a blowout port provided so as to face the ceiling suction port, and blows vertically downward from the ceiling blowout port. The collected air collects the chemical substance in the process of flowing along the work table from the worker side end of the work table toward the suction port, and then vertically upward from the blowout port by the fan unit. The chemical substance discharging system, wherein the chemical substance discharging system is discharged to the outside through the ceiling outlet. Hanging walls are provided on both sides of the ceiling suction port side end of the ceiling outlet and the opposite end of the ceiling suction port, and the height of the hanging wall on the opposite end of the ceiling suction port is The chemical substance discharge system according to claim 1, wherein the chemical substance discharge system is formed lower than a hanging wall at the end portion on the ceiling suction side .   The chemical discharge system according to claim 1, wherein a rectifying grid is provided at the ceiling outlet.   The chemical substance discharge system according to any one of claims 1 to 3, wherein a hood is provided around the ceiling suction port.   5. The chemical substance discharging system according to claim 4, wherein a panel having an inclined posture is provided in the hood, and the ceiling suction port is provided in the panel.   A chamber box is provided on the work table so as to communicate with the suction port of the fan unit, the chemical substance generation source is placed on the upper surface of the chamber box, and the chemical substance is placed on the upper surface of the chamber box. The chemical substance discharge system according to any one of claims 1 to 5, wherein a suction port is provided in the vicinity of the generation source.   The apparatus includes a chemical substance removing device that removes the chemical substance from the air exhausted from the ceiling inlet, and the air from which the chemical substance has been removed by the chemical substance removing device is blown into the room from the ceiling outlet and circulated. The chemical substance discharging system according to any one of claims 1 to 6, wherein the chemical substance discharging system is configured to do so.   The fan unit is provided at an end opposite to the end on the worker side, and the work table is so formed that the worker cannot pass between the end on the opposite side and a wall in the room. The chemical substance discharging system according to any one of claims 1 to 7, wherein the chemical substance discharging system is disposed in the vicinity of the water. The work table is disposed so that an operator can pass between at least two different end portions and a wall in the room, and the ceiling outlet is located above the at least two different end portions of the work table. The chemical substance discharge system according to any one of claims 1 to 8, wherein the chemical substance discharge system is provided in the system.