JP2019002605A - Open air processing unit - Google Patents

Abstract

To provide a technology which can feed open air in an appropriate state to an air supply target space while keeping removal ability of impurities suitable and saving water in an open air processing unit removing impurities from the open air by passing the open air flowing air supply course and fed to the air supply target space to a water membrane of a wet process cleanup unit arranged in the air supply course.SOLUTION: Multiple wet process cleanup units 10 arranged in a row in air supply air course 1 are comprised. Ventilation number adjust means 33 which can adjust number of the wet process cleanup units 10 in ventilation state that open air OA passes in the multiple wet process cleanup units 10, and supply water state adjust means 34 which can adjust a supply water state in each of multiple wet process cleanup units 10.SELECTED DRAWING: Figure 1

Description

  The present invention provides an air supply passage through which outside air supplied to an air supply target space flows by a blowing force of an air supply fan, and a water film formed by water supply that is disposed in the supply air passage and has a predetermined supply water amount or more. The present invention relates to an outside air processing apparatus including a wet purification unit that allows outside air to pass through and removes impurities from the outside air.

Conventionally, the outside air supplied to the supply target space through the supply air passage is passed through the water film of the wet purification section disposed in the supply air passage, and impurities such as chemical substances and dust are removed from the outside air. There is known an outside air processing apparatus configured to be removed (see, for example, Patent Document 1).
The wet purification part of such an outside air treatment apparatus has a water film forming part made of a breathable element made of porous ceramic or the like, and water is sprinkled on the upper part of the element so that a water film is formed on the surface of the element. Form. Then, by bringing outside water into contact with the water film, impurities contained in the outside air can be removed in a form of being absorbed by the water film.

JP 2002-95924 A

  In the outside air treatment apparatus having the wet purification unit as described above, when the water supply amount in the wet purification unit is lowered below a predetermined set water supply amount for the purpose of saving water, a water film necessary for removing impurities on the surface of the element However, there is a possibility that a portion where the impurity is not properly formed is generated, and as a result, the ability of removing impurities is rapidly deteriorated. Therefore, in order to exert the desired impurity removal capability, it is necessary to set the water supply amount in the wet purification section through which the outside air passes constantly to be equal to or higher than the set water supply amount, and it is difficult to conserve water by reducing the water supply amount. there were.

  In view of this situation, the main problem of the present invention is that the outside air flowing through the supply air passage and supplied to the supply target space is passed through the water film of the wet purification unit disposed in the supply air passage, In the outside air processing apparatus that removes impurities from outside air, it is to provide a technique that can save water and supply outside air in an appropriate state to the air supply target space while maintaining the ability to remove impurities.

A first characteristic configuration of the present invention is an air supply air passage through which outside air supplied to the air supply target space flows by the air blowing force of the air supply fan,
An outside air treatment device including a wet purification unit that is disposed in the air supply air passage and allows the outside air to pass through a water film formed by supplying water of a predetermined set amount or more and removes impurities from the outside air,
With a plurality of the wet purification units arranged in parallel in the air supply air passage,
Ventilation number adjusting means capable of adjusting the number of wet purification sections that are in a ventilation state through which outside air passes among the plurality of wet purification sections;
The water supply state adjusting means is capable of adjusting the water supply state in each of the plurality of wet purification sections.

According to this configuration, since the plurality of wet purification units are arranged in parallel in the supply air passage and the ventilation number adjusting means is provided, the number of wet purification units in the ventilation state can be adjusted. Furthermore, since the said water supply state adjustment means is provided, the amount of water supply in each wet purification part can be adjusted. And in the wet purification part made into the ventilation | gas_flowing state by the said ventilation number adjustment means, the water supply amount can be maintained by the said water supply state adjustment means to a setting water supply amount, and the removal capability of an impurity can be maintained. On the other hand, in the wet purification section that is not ventilated by the ventilation number adjusting means, the water supply amount is changed to a smaller amount than the set water supply amount by the water supply state adjusting means, or the water supply is reduced in a form of stopping. , Can save water. Furthermore, when the air flow rate of the air supply fan provided in the air supply air passage is reduced, if the area of the water film and the amount of water that the outside air passes through are reduced, the temperature of the outside air supplied to the air supply target space, It can suppress that humidity changes under the influence of water.
Therefore, according to the present invention, it is possible to provide an outside air processing apparatus capable of saving water and supplying outside air in an appropriate state to the air supply target space while maintaining the ability to remove impurities.

  According to a second characteristic configuration of the present invention, the number of wet purification units that are in the ventilation state is reduced by controlling the ventilation number adjusting means in accordance with a decrease in the amount of air blown from the supply fan, and the water supply A point is provided with water-saving control means for controlling the state adjusting means to reduce the water supply amount in the wet purification section that is in a non-ventilated state through which the outside air does not pass among the plurality of wet purification sections, than the set water supply amount. It is in.

  According to this configuration, since the water-saving control means is provided, when the amount of air supplied from the air supply fan is reduced, the number of wet purification units that are in the ventilation state is automatically reduced and the ventilation state is not set. In addition, the amount of water supplied in the wet purification unit is automatically reduced, and water can be saved efficiently. Further, when the air supply fan's air flow decreases, the area and water volume of the water film through which the outside air passes automatically decreases, so the temperature and humidity of the outside air are affected by the water. Can be efficiently suppressed.

  According to a third characteristic configuration of the present invention, when the water-saving control means starts passage of outside air in the non-ventilated wet purification unit, water supply in the non-ventilated wet purification unit It is in the point which performs the ventilation start process which starts the passage of external air in the state which made the quantity the said setting water supply amount.

  According to this configuration, since the water-saving control unit performs the ventilation start process, in the wet purification unit that is switched from the non-ventilated state to the ventilated state, the start of the passage of the outside air is sufficient to start the passage of the outside air. An appropriate water film can be formed with a sufficient amount of water supply to exhibit the ability to remove impurities.

  According to a fourth characteristic configuration of the present invention, the water saving control means determines the wet purification unit to be in the non-ventilated state so as to equalize the ventilation integration time in each of the plurality of wet purification units. The point is to execute the digitization process.

  According to this configuration, since the water-saving control means performs the ventilation integration time equalization process, even when the number of wet purification units that are in the ventilation state is reduced, the ventilation unit has a long ventilation integration time as much as possible. By switching from the state to the non-ventilated state, it is possible to determine the wet purification unit to be in the non-ventilated state, and equalize the accumulated negative time of each of the plurality of wet purification units. Therefore, it is possible to equalize the deterioration state of components such as elements for forming a water film in each of the plurality of wet purification units, thereby extending the life.

According to a fifth feature of the present invention, each of the plurality of wet purification sections includes a water film forming section in which the water film is formed, a ventilation intermittent section capable of interrupting passage of outside air to the water film, It is configured as a wet purification module configured to have a water supply unit capable of adjusting the water supply state to the water film,
The ventilation number adjusting means is constituted by a ventilation intermittent portion that each of the plurality of wet purification modules has,
The water supply state adjusting means is constituted by a water supply unit included in each of the plurality of wet purification modules.

  According to this configuration, each of the plurality of wet purification modules is configured as a wet purification module, and therefore, by simply arranging a plurality of wet purification modules in parallel in the air supply air passage, each of these wet purification modules has an intermittent ventilation. It is possible to allow the water supply section of each of these wet purification modules to function as a water supply state adjusting means.

Schematic configuration diagram of outside air processing equipment Schematic block diagram of the wet purification module provided in the outside air processing apparatus shown in FIG. Schematic configuration diagram of a control device provided in the outside air processing device shown in FIG.

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the outside air processing apparatus of this embodiment includes an air supply air passage 1 in which an air supply fan 2 is arranged. Then, the outside air OA is introduced into the supply air passage 1 by the air blowing force of the supply fan 2, the introduced outside air OA flows through the inside of the supply air passage 1, and the outside air OA thus flowed is used as the supply air SA. , And supplied to an air supply target space such as indoors.

A wet purification module 10 (an example of a wet purification unit) that removes impurities such as chemical substances and dust from the outside air by allowing the outside air OA to pass through the water film is disposed in the supply air passage 1. In addition, a plurality of heat exchangers 3, 4, 5 are disposed in the supply air passage 1 for cooling or heating the outside air OA flowing through the inside by heat exchange with cold water or hot water supplied from the outside. Has been. As the heat exchangers 3, 4, and 5, a preheating heat exchanger 3, a cooling heat exchanger 4, a reheating heat exchanger 5, and the like are sequentially arranged from the upstream side. The wet purification module 10 is disposed in a region between the cooling heat exchanger 4 and the reheating heat exchanger 5.
That is, the outside air OA introduced into the supply air passage 1 passes through the heat exchanger 3 for preheating, the heat exchanger 4 for cooling, the wet purification module 10 and the heat exchanger 5 for reheating in this order, and is then supplied as an air supply SA. It is supplied to the air supply target space.

For example, in summer when the temperature of the outside air OA is high, the outside air OA introduced into the supply air passage 1 is cooled in the cooling heat exchanger 4 and then passes through the wet purification module 10 to remove impurities. Done. Then, the outside air OA from which impurities are removed after being cooled in this way is supplied to the air supply target space as the air supply SA.
On the other hand, in the winter season when the temperature of the outside air OA is low, the outside air OA introduced into the supply air passage 1 is heated in the preheating heat exchanger 3 and then passes through the wet purification module 10 to remove impurities. Done. The outside air OA from which impurities have been removed after being heated in this way is appropriately heated in the reheat heat exchanger 5 and then supplied to the supply target space as the supply air SA.

  As shown in FIG. 2, the wet purification module 10 includes a water film forming unit 15 in which a water film is formed. The water film forming portion 15 includes a breathable element 16 made of a porous ceramic, a water spray pipe 17 for spraying water on the upper end portion of the element 16, and a drain pan that receives water dripped from the lower end portion of the element 16. 18. Further, the wet purification module 10 includes a ventilation intermittent portion 11 capable of intermittently passing the outside air OA to the water film formed in the water film forming portion 15, and a water supply state to the water film formed in the water film forming portion 15. And a water supply valve 20 (an example of a water supply unit) that can be adjusted.

  In the wet purification module 10, water is sprinkled from the sprinkling pipe 17 to the upper end portion of the element 16, whereby water is supplied to the entire element 16 and a water film is formed on the surface of the element 16. Then, when the outside air OA passing through the element 16 comes into contact with the water film formed on the surface of the element 16, impurities contained in the outside air OA are removed in a form that is absorbed by the water film. become. Further, the water that has absorbed the impurities is dropped from the lower end portion of the element 16 and received by the drain pan 18, and is finally discharged to the outside as the drain water DW.

  The wet purification module 10 includes, as the water film forming unit 15, a front-side water film forming unit 15 a disposed upstream in the flow direction of the outside air OA, and a pre-stage side water film forming unit along the flow direction of the outside air OA. It is configured in a two-stage system including a rear-stage water film forming portion 15b disposed downstream of 15a. Then, the water supply SW supplied from the water pipe through the opened water supply valve 20 is supplied to the water spray pipe 17b of the rear-stage water film forming unit 15b. On the other hand, in the water spray pipe 17a of the front-stage water film forming section 15a, the stored water stored in the drain pan 18b of the rear-stage water film forming section 15b via the water supply pump 19 operated in conjunction with the opening of the water supply valve 20 is provided. Is supplied. Contrary to this embodiment, the water supply SW is supplied to the front-stage water film forming section 15a, and the stored water stored in the drain pan 18a of the front-stage water film forming section 15a is supplied to the rear-stage water film forming section 15b. You may comprise as follows.

In the wet purification module 10, the water supply valve 20 is opened and the water supply pump 19 is operated to enter a normal water supply state in which the water film forming unit 15 is supplied with water of a predetermined set amount or more. On the other hand, by shutting off the water supply valve 20 and stopping the water supply pump 19, a water supply stop state is reached in which the supply of water to the water film forming unit 15 is stopped. Here, the set water supply amount is set as a minimum water supply amount or a water supply amount equal to or higher than the minimum water supply amount necessary for maintaining the ability of removing impurities from the outside air OA in the water film forming unit 15 to be suitable.
Further, by adjusting the opening degree of the water supply valve 20, the output adjustment of the water supply pump 19 is performed in conjunction with it, and the water supply amount to each of the water film forming portions 15a and 15b can be adjusted. .

In the normal water supply state, the water supply SW supplied from the open water supply valve 20 is supplied to the element 16b of the rear water film forming portion 15b, and a water film is formed on the surface of the element 16b. Become. On the other hand, water dripped from the element 16b to the drain pan 18b is pumped up by the water supply pump 19 in the activated state and supplied to the element 16a of the front water film forming portion 15a, thereby forming a water film on the surface of the element 16a. It will be. Further, water dripped from the element 16a to the drain pan 18a is discharged to the outside as drain water DW.
In this embodiment, the wet purification module 10 is configured in a two-stage type, but the present invention is not limited to this configuration, and may be configured in a one-stage type or a three-stage type or more. . In the present embodiment, the drain water of one water film forming unit 15b (the water stored in the drain pan 18b) is configured to be used as water supply for the other water film forming unit 15a. It is not limited to this, and each water film forming unit may be supplied with water separately without using drain water.

In this embodiment, the ventilation intermittent part 11 which can interrupt the passage of outside air OA is comprised as a well-known electric damper. Specifically, a frame body 13 that communicates with the water film forming unit 15, a plurality of flaps 12 disposed in the frame body 13, and an electric actuator 14 that can change the rotation angles of the plurality of flaps 12 are provided. . Then, by changing the rotation angle of the plurality of flaps 12 by the electric actuator 14, the open state and the cut-off state are switched, and the passage of the outside air OA in the frame body 13 can be interrupted. That is, when the ventilation intermittent part 11 is opened, the outside air OA passes through the water film forming part 15, and when the ventilation intermittent part 11 is shut off, the outside air OA does not pass through the water film forming part 15. It becomes a state.
In the present embodiment, the ventilation intermittent portion 11 is configured as an electric damper, but the present invention is not limited to this configuration, and other configurations such as an electric shutter, an electric butterfly valve, and the like. And the passage of the outside air OA can be interrupted.

  As shown in FIG. 1, three wet purification modules 10 are arranged in parallel in the supply air path 1 of the outside air processing apparatus. That is, the second wet purification module 10B is disposed in the central portion in the transverse direction of the supply air passage 1, and the first wet purification module 10A and the third wet purification module 10C are disposed on both sides thereof. ing.

The number of the wet purification modules 10 (hereinafter referred to as “ventilation”) in which the ventilation intermittent portions 11 provided in each of the three wet purification modules 10A, 10B, and 10C are in a ventilation state in which the outside air OA passes through the water film forming portion 15. It may be referred to as “number”.) Functions as an adjustable ventilation number adjusting means 33 (see FIG. 3).
In addition, the water supply valve 20 provided in each of the three wet purification modules 10A, 10B, and 10C can adjust the water supply amount in each of the three wet purification modules 10 (see FIG. 3). Function as.
In addition, in each figure of Fig.1 (a)-(c), the water supply valve 20 of the interruption | blocking state is represented by black, and the water supply valve 20 of the open state is represented by white.

As shown in FIG. 3, the outside air processing device is provided with a control device 30 that controls the operation. The control device 30 functions as an air conditioning control unit 31 that executes predetermined air conditioning control and a water saving control unit 32 that executes predetermined water saving control by executing a predetermined program.
Hereinafter, the details of the air conditioning control means 31 and the water saving control means 32 will be described in order with reference to FIGS. 1 and 3.

[Air conditioning control means]
In the air-conditioning control executed by the air-conditioning control means 31, first, the temperature and humidity of the supply air SA supplied from the supply air path 1 to the supply target space, and further the number of personnel generating heat in the supply target space and the production equipment The air conditioning load is calculated based on the operating rate. Then, based on the air conditioning load calculated in this way, the supply amount of the heat medium to the heat exchangers 3, 4, 5 is controlled, and the air supply amount of the supply fan 2 is controlled in the form of controlling the supply air space. The temperature and humidity are adjusted to the desired temperature and humidity. That is, the air conditioning control means 31 adjusts the supply amount of the heat medium to the heat exchangers 3, 4, 5 to the decreasing side and adjusts the air supply amount of the air supply fan 2 to the decreasing side as the air conditioning load decreases. It is configured as follows.
In the present embodiment, an example of the calculation method of the air conditioning load is shown, but it may be changed as appropriate.

[Water-saving control means]
The water saving control means 32 is configured to execute predetermined water saving control and to execute predetermined ventilation start processing and ventilation integration time equalization processing in the water saving control. Hereinafter, the details of the water saving control and the ventilation start processing and ventilation integration time equalization processing executed in the water saving control will be described in order.

(Water saving control)
In the water-saving control executed by the water-saving control means 32, when the air flow rate of the air supply fan 2 is reduced by the air-conditioning control, the air flow rate adjusting means 33 is controlled and the water supply state adjusting means is accompanied with the reduction. 34 is controlled.
Specifically, in the control of the ventilation rate adjusting means 33, the ventilation state through which the outside air OA of the plurality of wet purification modules 10 passes is set in a form in which some ventilation interruption / interconnection portions 11 in the open state are blocked. The number of wet cleaning modules 10 (the number of ventilation) is reduced. Further, in the control of the water supply state adjusting means 34, the water supply amount in the wet purification module 10 that is in a non-ventilated state through which the outside air OA does not pass among the plurality of wet purification modules 10 is reduced from the set water supply amount.

For example, as shown in FIG. 1C, the two second and third wet purification modules 10B and 10C are in a ventilated state (a state in which the outside air OA passes), and these second and third wet purification modules. A case is assumed in which 10B and 10C are in a normal water supply state (a state where water supply is performed in excess of the set water supply amount). In this state, when the air blowing amount of the air supply fan 2 is reduced by the air conditioning control, the second wet purification module 10B is maintained in the ventilation state and the normal water supply state as shown in FIG. The On the other hand, the third wet purification module 10C is switched to a non-ventilated state (a state where the outside air OA is shut off) and a water supply stopped state (a state where the water supply is stopped) by controlling the ventilation intermittent portion 11 and the water supply valve 20. . That is, the number of ventilations is automatically reduced from 2 to 1, and the water supply amount of the water supply SW to the entire wet purification module 10 is automatically reduced, thereby saving water.
In this embodiment, as an example of a mode of reducing the amount of water supplied to the wet purification module 10 that is in a non-ventilated state through which the outside air OA does not pass, the water supply state to the wet purification module 10 is set to a water supply stop state. Although configured, the water supply stop state may not be set, but a small flow rate water supply state in which the water supply amount is set to a predetermined small water supply amount smaller than the set water supply amount may be set.

For example, the outside air OA passing through the wet purification module 10 may be cooled by the cooling heat exchanger 4 and at a lower temperature than the feed water SW. In this case, when the air volume of the supply air fan 2 decreases and the area of the water film and the amount of water that the outside air OA contacts in the wet purification module 10 are too large, the outside air OA is heated to a temperature higher than a desired temperature or humidity. Or there is a concern of being humidified.
Therefore, in the outside air processing apparatus of the present embodiment, when the air flow rate of the air supply fan 2 is decreased, the area of the water film and the amount of water in contact with the outside air OA are automatically reduced as the ventilation number decreases. The temperature rise and humidification of the outside air OA can be suppressed, and the temperature and humidity of the outside air OA can be stabilized.

(Ventilation start processing)
In the ventilation start process executed in the water-saving control, in the wet purification module 10 that is in a non-ventilated state, a state in which the water supply amount is set to the set water supply amount when the passage of the outside air OA in the wet purification module 10 is started. The passage of outside air OA starts.
Specifically, in the third wet purification module 10C, the ventilation intermittent state 11 is opened from the non-ventilated state (see FIG. 1 (a)) where the ventilation intermittent portion 11 is blocked (see FIG. 1 (c)). )) And the passage of the outside air OA is assumed. In this case, the water-saving control means 32 restarts the water supply by switching the water supply state to the wet purification module 10 from the water supply stop state to the normal water supply state before the time when the ventilation intermittent part 11 is opened (FIG. 1). (Refer to (b)), the water supply amount is returned to the set water supply amount or more. Then, in the third wet purification module 10C, an appropriate water film is formed by supplying water of a sufficient set amount or more from the beginning when the outside air OA passes, and a desired impurity removal capability is exhibited. .

  In addition, about the water supply timing which switches the water supply valve 20 from a water supply stop state to a normal water supply state, it should just be before the ventilation timing which opens the ventilation intermittent part 11. FIG. For example, the water supply timing can be set so that ventilation is started when an appropriate water film is formed on the entire element 16 (see FIG. 2). Further, when the water supply state to the wet purification module 10 that is set to the non-ventilated state is a small flow rate water supply state, the water supply state to the wet purification module 10 is reduced before the time when the ventilation intermittent portion 11 is opened. It can be configured to switch from the flow rate water supply state to the normal water supply state to return the water supply amount to the set water supply amount or more. Further, when the ventilation rate is increased next time, the wet purification module 10 determined as the target to be switched from the non-ventilated state to the ventilated state is configured to keep the water supply amount at or above the preset water supply amount in advance. It doesn't matter.

(Ventilation integration time equalization process)
In the ventilation time equalization process executed in the water saving control, the wet purification modules 10 to be in the non-ventilated state are determined so as to equalize the ventilation integration time in each wet purification module 10.
Specifically, the water-saving control means 32 measures the ventilation integration time, which is the integration time in which the wet purification module 10 is in the ventilation state, with a timer (not shown) or the like. When the number of ventilations is reduced, among the wet purification modules 10 that are in the ventilation state at that time, the wet purification module 10 with the longest ventilation integration time is switched to the non-ventilation state. As a result, the deterioration state of components such as the element 16 (see FIG. 2) for forming a water film in each wet purification module 10 is equalized, and the service life is extended.

[Another embodiment]
Another embodiment of the present invention will be described. Note that the configuration of each embodiment described below is not limited to being applied alone, and may be applied in combination with the configuration of another embodiment.

(1) In the above embodiment, the water-saving control unit 32 is provided, and the ventilation number adjusting unit 33 and the water supply state adjusting unit 34 are controlled in accordance with the decrease in the air flow rate of the air supply fan 2, thereby reducing the ventilation number and non-ventilation. Although the water supply amount in the wet purification module 10 to be in a state is automatically reduced, the operation of the ventilation rate adjusting means 33 and the water supply state adjusting means 34 is configured to be executed manually. It doesn't matter.

(2) In the said embodiment, when the ventilation volume of the air supply fan 2 decreased, it comprised so that the ventilation rate and water supply amount of the wet purification module 10 might be decreased, but the temperature and humidity of supply air SA are high, for example In this case, the air flow rate and the water supply amount of the wet purification module 10 may be reduced without reducing the air blowing amount of the air supply fan 2. In this case, the area of the water film and the amount of water in contact with the outside air OA in the wet purification module 10 are reduced due to the reduction in the number of ventilations and the amount of water supply of the wet purification module 10. Therefore, the temperature increase and humidification of the supply air SA that is the outside air OA that has passed through the wet purification module 10 can be suppressed, and the temperature and humidity of the supply air SA can be stabilized.

(3) In the above embodiment, the example in which the water film forming unit 15, the ventilation intermittent unit 11, the water supply valve 20, and the like are modularized as the wet purification module 10 and mounted on the outside air processing apparatus has been described. You may comprise so that it may provide in an external air processing apparatus by itself.

(4) In the above embodiment, when arranging a plurality of wet purification units in the supply air passage 1 in parallel, an example in which three wet purification modules 10 as wet purification units are arranged is shown. The number may be plural, and for example, two or four or more wet purification units may be arranged in parallel with the supply air passage.

1 Supply Air Path 2 Supply Air Fan 10 Wet Purification Module (Wet Purification Unit)
11 Ventilation intermittent part 15 Water film formation part 20 Water supply valve (water supply part)
32 Water saving control means 33 Ventilation number adjustment means 34 Water supply state adjustment means OA Outside air SW Water supply

Claims (5)

An air supply passage through which the outside air supplied to the air supply target space flows through the air supply fan;
An outside air treatment device including a wet purification unit that is disposed in the air supply air passage and allows the outside air to pass through a water film formed by supplying water of a predetermined set amount or more and removes impurities from the outside air,
With a plurality of the wet purification units arranged in parallel in the air supply air passage,
Ventilation number adjusting means capable of adjusting the number of wet purification sections that are in a ventilation state through which outside air passes among the plurality of wet purification sections;
An outside air processing apparatus comprising: a water supply state adjusting means capable of adjusting a water supply state in each of the plurality of wet purification units.   Along with a decrease in the air flow rate of the air supply fan, the ventilation number adjusting means is controlled to reduce the number of wet purification sections to be in the ventilation state, and the water supply state adjusting means is controlled to The outside air processing apparatus according to claim 1, further comprising: a water-saving control unit configured to reduce a water supply amount in the wet purification unit that is in a non-ventilated state through which the outside air does not pass among the plurality of wet purification units, than the set water supply amount.   When the water-saving control means starts the passage of outside air in the non-ventilated wet purification unit, the water supply amount in the non-ventilated wet purification unit is set to the set water supply amount The outside air processing apparatus according to claim 2, wherein ventilation start processing for starting passage of outside air is executed.   The water saving control means executes ventilation integrated time equalization processing for determining the wet purification unit to be in the non-ventilated state so as to equalize the ventilation integrated time in each of the plurality of wet purification units. 3. An outside air processing apparatus according to 3. Each of the plurality of wet purification units can adjust a water film forming unit in which the water film is formed, a ventilation intermittent part capable of interrupting passage of outside air to the water film, and a water supply state to the water film Configured as a wet purification module configured with a water supply unit,
The ventilation number adjusting means is constituted by a ventilation intermittent portion that each of the plurality of wet purification modules has,
The outside air processing apparatus according to any one of claims 1 to 4, wherein the water supply state adjusting means is configured by a water supply unit included in each of the plurality of wet purification modules.

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