JP2012122681A - Humidification device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the efficiency of humidification, even when the number of spray nozzles is reduced and a humidifying water amount is suppressed.SOLUTION: A humidification device includes a casing through which the atmosphere passes and a humidifying part humidifying the atmosphere in the casing. The humidifying part includes a plurality of spray nozzles spouting water particles to the atmosphere and a rotating part supporting the plurality of spray nozzles and rotating the plurality of spray nozzles along a plane crossing an atmosphere passing direction.

Description

  The present invention relates to a humidifier, and more particularly to a humidifier incorporated in an air purification system.

Conventionally, an air purification system is sometimes installed at an urban intersection, a tunnel ventilator, or the like to simultaneously remove airborne particulate matter SPM and nitrogen oxides NOx (NO, NO ₂ ). As this air purification system, a system including a humidifier that humidifies the atmosphere and a denitration device that removes nitrogen oxides from the humidified atmosphere is known (see, for example, Patent Document 1).

FIG. 10 is a schematic cross-sectional view showing a schematic configuration of a conventional air purification system. As shown in FIG. 10, the air purification system 100 is provided with a duct 101 that takes in air, a humidifying device 110 disposed downstream of the duct 101, and a denitration device 120 disposed downstream of the humidifying device 110. ing.
The humidifying device 110 is provided with a casing 111 that forms an air flow path from the duct 101 to the denitration device 120. A large number of spray nozzles 112 are arranged along the inner wall of the casing 111 so as to surround the air flow path (see FIG. 11). Water is supplied to each spray nozzle 112 through a water supply pipe 113.
The denitration device 120 includes a plurality of intake ports 121 that take in the air that has passed through the humidifying device 110, an adsorbent 122 and a denitration tray 123 that are provided corresponding to each intake port 121, and each intake port 121. A plurality of guide portions 124 for guiding the atmosphere to each adsorbent 122 and a plurality of discharge ports 125 for discharging the atmosphere that has passed through the adsorbent 122 and the denitration tray 123 to the outside are provided.

  The air flowing in from the duct 101 is humidified when passing through the humidifier 110 because water particles are ejected from the spray nozzle 112. The humidified air flows into the denitration device 120 from the intake port 121 and passes through the adsorbent 122 and the denitration tray 123 to be discharged from the discharge port 125 with the nitrogen oxides removed. Thereby, the atmosphere is purified.

JP 2004-243289 A

In recent years, in order to reduce costs, it is desired to reduce the number of spray nozzles 112 installed, reduce the amount of humidified water, and improve the humidification efficiency.
Therefore, an object of the present invention is to increase the humidification efficiency even if the number of spray nozzles is reduced as compared with the conventional one and the amount of humidified water is suppressed.

A humidifier according to the invention of claim 1 is provided.
A casing through which the atmosphere passes;
A humidifying unit for humidifying the atmosphere in the casing,
The humidifying part is
A plurality of spray nozzles for ejecting water particles to the atmosphere;
And a rotating unit that supports the plurality of spray nozzles and rotates the plurality of spray nozzles along a plane that intersects the air passage direction.

The invention described in claim 2 is the humidifier according to claim 1,
The rotating part is
Legs,
A rotating frame rotatably supported by the legs in a state where the plurality of spray nozzles are attached at predetermined intervals;
And a drive source for rotating the rotating frame.

The invention described in claim 3 is the humidifier according to claim 1,
The rotating part is
Legs,
A blade portion rotatably supported by the leg portion and rotated by the flow of the atmosphere;
A rotating frame that is rotatably supported by the legs in a state where the plurality of spray nozzles are attached at predetermined intervals;
The rotating frame rotates following the rotation of the blade portion.

The invention according to claim 4 is the humidifying device according to claim 1,
The rotating part is
Legs,
In a state where the plurality of spray nozzles are attached to the ring-shaped header with a predetermined interval, a rotating frame supported rotatably on the leg portion,
The rotating frame is provided with rotating blades serving as a driving source for rotating the rotating frame.

The invention according to claim 5 is the humidifying device according to claim 4,
The mounting angle of the rotary blade can be adjusted only in one direction.

A sixth aspect of the present invention is the humidifying device according to the fourth aspect,
The mounting angle of the rotary blade is adjustable in two directions.

  According to the first aspect of the present invention, since the rotating unit rotates the plurality of spray nozzles along a plane intersecting the atmospheric passage direction, a large number of spray nozzles are arranged on one plane in a pseudo manner. Therefore, even if the amount of humidified water is reduced by using a smaller number of spray nozzles than before, the humidification efficiency can be increased.

  According to the second aspect of the present invention, since the rotating frame is rotated by the drive source, the rotating frame can be reliably rotated even if the air flow is small.

  According to the third aspect of the invention, since the rotating frame rotates following the rotation of the blade portion, the rotating frame can be rotated by the airflow without using electric power or the like.

  According to the fourth aspect of the present invention, since the plurality of spray nozzles are attached to the ring-shaped header at predetermined intervals, the state in which a large number of spray nozzles are installed on one pseudo plane is more accurately reproduced. can do.

  According to the fifth aspect of the present invention, since the attachment angle of the rotary blade can be adjusted only in one direction, it can be adjusted to an attachment angle that can effectively receive airflow.

  According to the sixth aspect of the present invention, since the mounting angle of the rotary blade is adjustable in two directions, finer adjustment is possible, and the mounting angle can be adjusted to receive airflow more effectively.

It is a schematic cross section which shows the air purification system provided with the humidification apparatus of this embodiment. It is a front view which shows schematic structure of the rotation part with which the humidification apparatus of FIG. 1 is equipped. It is sectional drawing which shows schematic structure of the spray nozzle with which the humidification apparatus of FIG. 1 is equipped. It is a front view which shows the front-end | tip part of the spray nozzle of FIG. It is a front view which shows the modification of the rotation part of FIG. It is a schematic cross section which shows the modification of the humidifier in the air purification system of FIG. It is a side view which shows the modification of the rotation part with which the humidification apparatus of FIG. 1 is equipped. It is a side view which shows the modification of the rotation part with which the humidification apparatus of FIG. 1 is equipped. It is a side view which shows the modification of the rotation part with which the humidification apparatus of FIG. 1 is equipped. It is a schematic cross section which shows the air purification system provided with the conventional humidifier. It is a front view which shows the arrangement position of the spray nozzle with which the humidification apparatus of FIG. 10 is equipped.

  FIG. 1 is a schematic cross-sectional view showing a schematic configuration of an air purification system according to the present embodiment. As shown in FIG. 1, the air purification system 1 is provided with a duct 2 that takes in air, a humidifier 3 that is disposed downstream of the duct 2, and a denitration device 4 that is disposed downstream of the humidifier 3. ing.

  The denitration device 4 includes a plurality of intake ports 41 that take in the air that has passed through the humidifying device 3, an adsorbent 42 and a denitration tray 43 that are provided corresponding to each intake port 41, and each intake port 41. A plurality of guide portions 44 for guiding the atmosphere to each adsorbent 42 and a plurality of discharge ports 45 for discharging the atmosphere that has passed through the adsorbent 42 in the denitration tray 43 to the outside are provided.

  The humidifier 3 is provided with a casing 31 that forms an air flow path from the duct 2 to the denitration device 4, and a humidifying unit 32 that humidifies the atmosphere within the casing 31.

The humidifying unit 32 supports a plurality of spray nozzles 33 for ejecting water particles to the atmosphere and a plurality of spray nozzles 33, along the plane intersecting the plurality of spray nozzles 33 with the passage direction X of the atmosphere. And a rotating part 34 that rotates the rotating part 34.
The rotating part 34 includes a leg part 35 standing up and down, a rotating frame 36 that supports the spray nozzles 33 attached to the leg part 35, and a drive source 37 that drives the rotating frame 36. ing.
FIG. 2 is a front view illustrating a schematic configuration of the rotating unit 34. As shown in FIG. 2, the rotary frame 36 is disposed along the vertical direction, and is rotatably supported on the upper portion of the leg portion 35 with its central portion coupled to the rotation shaft of the drive source 37. ing.
In addition, two spray nozzles 33 are attached to the rotary frame 36 with a predetermined interval around the rotation axis. The insides of the leg portion 35 and the rotary frame 36 serve as a water supply path so that water can be supplied to each spray nozzle 33.
Then, when the power of the drive source 37 is transmitted to the rotary frame 36 and the rotary frame 36 rotates on the leg portion 35, the plurality of spray nozzles 33 rotate along a plane orthogonal to the atmospheric passage direction X. It will be.

  FIG. 3 is a cross-sectional view illustrating a schematic configuration of the spray nozzle 33, and FIG. 4 is a front view illustrating a tip portion of the spray nozzle 33. As shown in FIG. 3, the spray nozzle 33 includes a cylindrical main body 331 and a nozzle tip 333 fixed to the inner surface of the ejection side wall 332 of the main body 331. In the main body 331, one end of a cylindrical peripheral wall 334 is closed by an injection side wall 332, and an injection hole 335 is provided in the center thereof, while the other end of the peripheral wall 334 is an opening 336. The opening 336 communicates with the supply path, and water flows into the hollow portion 337 of the main body 331 through the opening 336.

  The nozzle tip 333 has a substantially disk shape, is molded when the main body 331 is molded, and is fixed to the inner surface of the injection side wall 332 of the main body 331. The nozzle tip 333 includes an injection hole 338 communicating with the injection hole 335 at the center of the injection side wall 332 of the main body 331, and jets water from the injection hole 338 through the injection hole 335 as a mist. The injection hole 338 includes a tapered hole portion 339 that is reduced in diameter from the inflow side, and a small diameter hole portion 340 that is continuous with the tapered hole portion 339 and communicates with the injection port 335. As shown in FIG. 4, the inner surface of the nozzle tip 333 is formed with a plurality of swiveling grooves 341 that are curved in an arc shape at intervals of 90 degrees. The inner peripheral ends of the swirling grooves 341 are communicated with the peripheral edge of the tapered hole portion 339 so that water flows in through the swirling grooves 341 while swirling water.

In the spray nozzle 33, water flowing from the supply path into the main body 331 passes through the swivel groove 341 of the nozzle tip 333 on the spray side and flows into the tapered hole 339 of the spray hole 338 as a swirl flow. Since the inflowing water collides while turning along the inner peripheral surface of the tapered hole portion 339, the water droplets are refined. A semi-dry fog containing water droplets of fine particles of 10 to 30 μm flows from the tapered hole portion 339 into the small-diameter hole portion 340 on the injection side, and further from the injection port 335 of the main body 331 communicated.
In addition, it is preferable that the pressure of the water supplied to the spray nozzle 33 is set to about 0.1-10 MPa. Moreover, the spray nozzle 33 mentioned above is an example to the last, and it is also possible to apply spray nozzles other than this.

Next, the operation of this embodiment will be described.
Before the atmosphere is taken in, the rotating unit 34 ejects water particles from the spray nozzle 33 while rotating the rotating frame 36 by the driving source 37. And the air (arrow of FIG. 1) which flowed into the casing 31 from the duct 2 is humidified when passing through the humidifier 3 because water particles are ejected from the spray nozzle 33. The humidified air flows into the denitration device 4 from the intake port 41 and passes through the adsorbent 42 in the denitration tray 43, and is discharged from the discharge port 45 in a state where nitrogen oxides are removed. Thereby, the atmosphere is purified.

As described above, according to the present embodiment, the rotating unit 34 rotates the plurality of spray nozzles 33 along a plane orthogonal to the atmospheric passage direction. A state in which the spray nozzles 33 are arranged can be formed. Thereby, even if it suppresses the amount of humidification water with the spray nozzle 33 fewer than before, it becomes possible to improve humidification efficiency.
In addition, since the rotary frame 36 is rotated by the drive source 37, the rotary frame 36 can be reliably rotated even if the atmospheric airflow is small.

  For example, in the above-described embodiment, the case where the plurality of spray nozzles 33 rotate along a plane orthogonal to the passage direction X of the atmosphere is exemplified. However, the spray nozzles 33 rotate at least along a plane intersecting the passage direction X. That's fine.

  In the above-described embodiment, the case where the rotating frame 36 is rotated by the drive source 37 has been described as an example. However, the rotating frame 36 can be driven by an air current in the atmosphere. For example, in the humidifier 3 </ b> A shown in FIG. 5, instead of the drive source 37, the blade portion 38 that is rotated by the atmospheric flow is rotatably supported by the leg portion 35, and follows the rotation of the blade portion 38. Thus, the rotating frame 36 rotates. In this way, if the rotating frame 36 rotates following the rotation of the blade portion 38, the rotating frame 36 can be rotated by an air current without using electric power or the like.

Furthermore, as shown in FIG. 6, swirling means 8 that turns the atmosphere into a swirling flow before reaching the humidifying section 32 may be provided on the upstream side of the humidifying section 32. The swirling means 8 is provided with a plurality of fins 81 having a swirling flow of the atmosphere in a portion serving as an air flow path. As described above, the swirling means 8 that turns the atmosphere into the swirling flow until reaching the humidifying section 32 is provided, so that the time until the air passes through the casing 31 can be lengthened. As a result, the time during which the atmosphere is exposed to water particles can be lengthened, and the atmosphere can be humidified more efficiently.
In addition, it is preferable that the rotation direction of the swirl | vortex flow by the turning means 8 and the rotation direction of the rotation frame 36 are reverse directions. As a result, the rotational speed of the rotary frame 36 with respect to the atmospheric airflow can be relatively increased without increasing the rotational speed of the drive source 37. Therefore, the deterioration of the drive source 37 can be suppressed, and it can be used for a long time. Further, since the rotational speed is relatively increased, the rotational speed of the drive source 37 itself can be suppressed, and as a result, the drive energy of the drive source 37 can be reduced.

  Further, in the above-described embodiment, the case where the rotation frame 36 is rotated about the center of the rotation frame 36 has been described as an example. However, for example, as shown in FIG. You may rotate as a rotating shaft. In this case, if a rotation frame 36b having a rotation direction different from that of the rotation frame 36a is also installed, the relative rotation speed of the rotation frame 36b is increased. Therefore, even if the rotation speed is low, a large number of spray nozzles 33 are arranged on one plane. A simulated state can be formed. Therefore, the deterioration of the drive source 37 can be suppressed, and it can be used for a long time.

FIGS. 8A and 8B are explanatory views showing a modification of the rotating unit, in which FIG. 8A is a front view and FIG. 8B is a side view. As in the rotating portion 34B shown in FIG. 8, the rotating frame 36b may have a ring-shaped header 361 that is rotatably supported by the leg portion 35. The ring-shaped header 361 includes an outer circle part 362, an inner circle part 363, and a cross-shaped column part 364 that connects the outer circle part 362 and the inner circle part 363. A plurality of spray nozzles 33 are attached to the outer circle portion 362 and the inner circle portion 363 at a predetermined interval. Moreover, the inside of the outer circle part 362, the inner circle part 363, and the support | pillar part 364 is hollow, and becomes the supply path which supplies the water from the leg part 35 to each spray nozzle 33. FIG.
A plurality of rectangular plate-shaped rotating blades 365 are attached to the support column 364. As shown in FIG. 8B, the rotary blade 365 rotates in the front-rear direction around one end portion in the vertical direction (the lower end portion in FIG. 8B). Thereby, the attachment angle θ of the rotary blade 365 can be adjusted only in one direction.
When an air flow acts on each rotary blade 365, the rotary frame 36b rotates.

As described above, since the plurality of spray nozzles 33 are attached to the ring-shaped header 361 at predetermined intervals, it is possible to more accurately reproduce the state in which a large number of spray nozzles 33 are installed on one pseudo plane. .
Furthermore, since the attachment angle θ of the rotary blade 365 can be adjusted only in one direction, it can be adjusted to an attachment angle that can effectively receive airflow.

  FIGS. 9A and 9B are explanatory views showing a modification of the rotating unit, in which FIG. 9A is a front view, FIG. 9B is a side view, and FIG. Like the rotating portion 34C shown in FIG. 9, the rotary blade 365c rotates in the front-rear direction around one end in the vertical direction (the lower end in FIG. 9B) and in the front-rear direction around the inner end. It is attached to the support | pillar part 364 so that it may rotate. Thereby, the attachment angles θ1 and θ2 of the rotary blade 365c can be adjusted in two directions, and finer adjustment is possible. Therefore, it is possible to adjust the mounting angle so that the airflow can be received more effectively.

DESCRIPTION OF SYMBOLS 1 Air purification system 2 Duct 3 Humidifier 4 Denitration device 31 Casing 32 Humidification part 33 Spray nozzle 34 Rotation part 35 Leg part 36 Rotation frame 37 Drive source 41 Intake port 42 Adsorbent 43 Denitration tray 44 Guide part 45 Exhaust port X passage direction

Claims (6)

A casing through which the atmosphere passes;
A humidifying unit for humidifying the atmosphere in the casing,
The humidifying part is
A plurality of spray nozzles for ejecting water particles to the atmosphere;
A humidifying device comprising: a rotating unit that supports the plurality of spray nozzles and rotates the plurality of spray nozzles along a plane that intersects the passage direction of the atmosphere. The humidifying device according to claim 1,
The rotating part is
Legs,
A rotating frame rotatably supported by the legs in a state where the plurality of spray nozzles are attached at predetermined intervals;
A humidifier having a drive source for rotating the rotating frame. The humidifying device according to claim 1,
The rotating part is
Legs,
A blade portion rotatably supported by the leg portion and rotated by the flow of the atmosphere;
A rotating frame that is rotatably supported by the legs in a state where the plurality of spray nozzles are attached at predetermined intervals;
The humidifying device, wherein the rotating frame rotates following the rotation of the blade portion. The humidifying device according to claim 1,
The rotating part is
Legs,
In a state where the plurality of spray nozzles are attached to the ring-shaped header with a predetermined interval, a rotating frame supported rotatably on the leg portion,
A humidifying device, wherein a rotating blade as a driving source for rotating the rotating frame is attached to the rotating frame. The humidifying device according to claim 4, wherein
The humidifying device characterized in that the mounting angle of the rotary blade is adjustable only in one direction. The humidifying device according to claim 4, wherein
The humidifying device characterized in that the mounting angle of the rotary blade is adjustable in two directions.

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