JPH0256932B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a mist removal device particularly suitable for removing mist from high-temperature, high-humidity mist-containing air such as water vapor.

[Conventional technology]

Conventionally, as a mist remover, Utility Model 54-96478
As shown in the publication, mist in the mist-containing air sucked in by a suction fan is captured by a rotating filter, and when this mist becomes coarse particles, it is shaken off in the outer circumferential direction by centrifugal force and passed through the outer circumferential filter. After adhering to the layer and further coarsening it here,
It is known that the air is moved along the flow of air toward the exhaust port and is discharged from the drain port.

With such a configuration, the mist can be sequentially discharged to the outside, so compared to a system in which the mist is simply captured and accumulated with a fixed filter,
The filter is less likely to become clogged, and the filter cleaning or replacement cycle becomes longer.
It has advantages such as long-term continuous operation.

[Problem to be solved by the invention]

In such a mist remover, it is necessary to make the rotating filter efficiently shake off the mist, that is, (a) make as much of the sucked mist adhere to the rotating filter as possible to reduce the amount of mist that passes through the filter. (b) To prevent clogging caused by the attached mist, it is possible to improve the mist removal efficiency by shaking off the mist toward the outer periphery as soon as possible.

However, especially in the case of mist-containing air containing fine mist particles such as steam, the above functions (a) and (b) become insufficient, causing the problem that the original characteristics of this mist remover cannot be fully utilized. Ta.

Further, in the case of high temperature or high humidity mist-containing air, the treated air is discharged in a high temperature or high humidity state, which may be inconvenient in terms of air conditioning.

Therefore, the present invention provides a mist removal device that can efficiently capture the inhaled mist and shake it off around the outer periphery, especially when treating high-temperature mist-containing air containing fine mist such as steam. It provides:

[Means to solve the problem]

The present invention consists of a mist remover and a mixing tank,
The above-mentioned mist remover includes a suction fan, a rotating filter that attaches the mist in the mist-containing air sucked in from the suction port by the suction fan, and shakes it off in the outer circumferential direction. The mixing tank is equipped with a filter layer that captures the mist and moves it along the air flow toward the exhaust port, and the mixing tank has a mist-containing air inlet that sucks the mist-containing air, and a filter layer that is perpendicular to the mist-containing air. The mist-containing air inlet is provided with an outside air inlet that takes in outside air from a direction, and an outlet that is connected in communication with the inlet of the mist remover. An outside air introduction cylinder, which is partitioned into multiple chambers between the tank and the discharge port, and has a number of holes in its peripheral wall, communicates with the outside air intake port, and allows the mist-containing air to flow through the mixing tank. It is provided across the direction perpendicular to the moving direction of the.

[Effect]

With this configuration, before entering the mist remover, the mist-containing air is mixed with outside air in the mixing tank and lowered in temperature, which coarsens the mist. Since the mist can be captured efficiently and the captured mist can be quickly blown away toward the outer circumference, the mist removal efficiency is extremely high.

Furthermore, since the mist-containing air can be lowered in temperature and dehumidified, the inconvenience of high-temperature, high-humidity air being exhausted as is is eliminated.

On the other hand, in the mixing tank, an outside air introduction cylinder with a large number of holes in the peripheral wall is installed across the tank at right angles to the moving direction of the mist-containing air, and outside air is introduced from the outside air intake port through this outside air introduction cylinder. Because of this configuration, the mixing action at the first stage in this outside air introduction portion can be performed efficiently.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

A is a mist remover, and B is a mixing tank.

Mist remover A is installed on mixing tank B, with suction port 1 of mist remover A and discharge port 2 of mixing tank B.
are connected to each other by a duct 3.

The structure of the mist remover A will be explained with reference to FIG.

Inside the casing 4 of this mist remover A, a common motor 7 is used to connect a Shirotsuko fan 5 and a rotary filter 6, which is a perforated drum with a filter layer attached thereto.
It is coaxially provided so as to be rotationally driven by.

The peripheral wall of the casing facing the rotary filter 6 is bulged outward, and within this bulge 8 are first and second filters.
Both adsorption filters 9 and 10 have a space 11 between them.
The outer periphery filter layer is constituted by providing the outer periphery filter layer.

12 is an exhaust port provided on the rear end surface of the casing, and 13 is a partition plate for communicating only the space 11 with the exhaust port 12. Further, 14 is a rectifying chamber connected to the front end of the casing 4, and 15 and 16 are drain ports.

The basic operation of this mist remover A will be explained using oil mist as an example.

The mist-containing air sucked into the casing 1 from the suction port 1 by the rotation of the fan 5 flows through the rotating filter 6 → the first adsorption filter 9 → the space 11 → the exhaust port 12 as shown by the arrows in FIG. Move by route.

When the oil mist adhering to the rotary filter 6 becomes sufficiently coarse, it is blown away by the centrifugal force caused by the high-speed rotation of the filter 6, and once
It adheres to the first adsorption filter 9.

Oil mist also adheres to the first adsorption filter 9 when the mist-containing air passes through it, and after these are combined and grow, they are blown off by wind pressure to the second adsorption filter 9.
It adheres to the adsorption filter 10.

The oil adhering to this second adsorption filter 10 is
It moves backward as the air in the space 11 moves,
It is discharged from the drain port 15.

Further, a certain amount of oil is similarly led to the drain port 15 from the first adsorption filter 9. Furthermore, due to the rapid expansion of air in the rectifier chamber 14, some of the oil mist becomes oil droplets, and the drain port 1
It is discharged from 6.

On the other hand, the mixing tank B has a mist-containing air inlet 17 on the front and outside air inlets 18 and 1 on both left and right sides of the center.
8, and both outside air inlets 18,1
A cylindrical outside air introduction tube 20 having a large number of holes 19 in its peripheral wall is provided so as to traverse the interior of the mixing tank B.

Adjustment plates 21, 21 for adjusting the opening amount of the air intake ports 18, 18 are provided on both left and right sides where the outside air intake ports 18, 18 are provided, and are slidable in a sliding door style, thereby adjusting the amount of outside air intake. We are beginning to make adjustments as appropriate.

In addition, in the mixing tank B, there are three partition plates 2 in the front and rear direction.
2, 23, and 24 are provided at intervals, thereby dividing the inside of the tank into four first to fourth chambers 25, 26, 27, and 28 in the direction of air movement. The outside air introduction tube 20 is installed in the second chamber 26.

Among the partition plates 22, 23, 24, the middle partition plate 2
3 is provided with a circular ventilation hole 29 in the center, and the other partition plates 22, 24 are provided with ventilation holes 30..., 31 at the periphery.
...is being formed. Reference numeral 32 indicates a bottom plate inclined forwardly downward, and reference numeral 33 indicates a drain port provided at the inclined lower end of the bottom plate 32.

Next, the operation of this mixing tank B will be explained.

The mist-containing air is passed through the fan 5 in the mist remover A.
is sucked into mixing tank B by the rotation of .

Taking water vapor as an example of the mist-containing air, water vapor is simultaneously sucked into the mixing tank B from the mist-containing air intake port 17, and outside air is taken in from the outside air intake ports 18, 18, respectively, and this water vapor and outside air are sucked into the second chamber. They are mixed in the fourth chambers 26, 27, and 28.

To be more specific, the water vapor sucked into the first chamber 25 in the mixing tank B first collides with the first partition plate 22 and flows through the ventilation holes 30 around the partition plate 22 into the second chamber with a reduced flow velocity. 27, where it mixes with the outside air drawn in from the outside air intake ports 18, 18.

In this case, in the second chamber 27, the outside air introduction tube 20 is provided across the inside of the room at right angles to the air movement direction, spanning between the outside air inlets 18, 18 on both sides. , 18, but is evenly introduced throughout the room from the numerous holes 19 of this outside air introduction tube 20.

Therefore, the mist-containing air and the outside air are evenly mixed in the entire area inside the second chamber 26, and an efficient mixing action is performed from the first stage.

This mixed air increases the degree of mixing by flowing into the third chamber 27 through a limited outlet, the vent hole 29 in the center of the second diaphragm 29, and then the third chamber 27 in the third chamber 27. Repetitive mixing of flow velocity reduction and diffusion due to collision with the partition plate 24 → inflow into the fourth chamber 28 through the ventilation holes 31 around the third partition plate 24 → diffusion and flow velocity reduction within the fourth chamber 28 After undergoing the action, the mist is sucked into the mist remover A through the discharge port 2.

In this way, when water vapor and outside air are mixed in the mixing tank B, the water vapor becomes lower in temperature and becomes coarser, so that in the mist remover A that follows, the mist capturing action in the rotary filter 6 becomes more efficient. (few missed catches), and after capture,
This mist can be quickly blown away in the outer circumferential direction.

In other words, in the mixing tank B, the fine mist that is difficult to be captured by the rotary filter 6 of the mist remover A is made into coarse particles that can be easily captured by the filter 6 in advance. This serves to enhance mist removal efficiency.

By the way, it is possible to use this mixing tank B in a conventional fixed filter type mist remover.

However, in the case of a fixed filter type mist remover, the mist coarsened in mixing tank B is mainly removed from the first
Since it is only captured and accumulated by the fixed filter in the first stage, the filter in the first stage becomes clogged early. Therefore, there is no advantage to using the mixing tank B, and the only disadvantage is that the first stage filter must be replaced frequently.

That is, providing the mixing tank B, in other words, coarsening the mist in advance means capturing the mist with the rotating filter 6 and shaking it off in the outer circumferential direction.
Furthermore, this effect is exhibited only in the case of the mist remover A of the present invention, which has a structure in which the mist is discharged to the outside through the outer peripheral filter layer.

In addition, in the mixing tank B, water vapor flows through the partition plate 22.
- 24 are repeated, and each time, the mixture with the outside air becomes denser and the temperature decreases, so a certain amount of mist is generated in the mixing tank B itself as well.
and is trapped by adhering to the surrounding wall of the tank. The captured mist connects with each other, flows down or drips, and is discharged from the drain port 33.

The above-mentioned effect is not limited to water vapor, but also occurs in the case of vapor containing an oil component or vapor of other liquids.

Further, when using this device, it is possible to obtain a cooling effect on high-temperature mist-containing air by mixing it with outside air, and a dehumidifying effect on high-humidity mist-containing air.

When using this device, if the mist source is in a closed room, open the mist-containing air inlet 17 to the mist source and open the outside air inlet 1.
8 and 18 are opened to the outside.

In addition, when the mist source is not particularly isolated, the device is moved away from the mist source to prevent mist inhalation from the outside air intake ports 18, 18.
The mist-containing air intake port 17 is opened into the mist generation area through a duct (not shown). Or, conversely, place the device at the mist source and open the outside air inlet 18,
18 may be opened outside the mist generation area by a duct. However, when using such a duct, if there is a risk that the duct may lack air suction power, it is necessary to separately provide a suction fan in the duct or the like.

On the other hand, the outside air sucked into the mixing tank B from the outside air intake port 18 only needs to be at a lower temperature than the mist-containing air. This condition is fully satisfied even inside the building as long as it is outside the mist generation area, so the outside air inlet 18
may be opened into the building.

Further, in order to further enhance the cooling effect of the mixing tank B, the outside air may be cooled with a cooler or the like and then supplied into the mixing tank B from the outside air intake port 18.

〔Effect of the invention〕

As described above, according to the present invention, mist-containing air is mixed with outside air (or cooled outside air) in a mixing tank before being sucked into the mist remover to lower the temperature and coarsen the mist. Because of this, especially when used in high-temperature mist-containing air, the mist remover can efficiently capture mist with a rotating filter, and the captured mist can be quickly blown away toward the outer circumference, improving mist removal efficiency. becomes very high.

Furthermore, since the mist-containing air can be lowered in temperature and dehumidified, the inconvenience of high-temperature, high-humidity air being exhausted as is is eliminated.

On the other hand, in the mixing tank, an outside air introduction cylinder with a large number of holes in the peripheral wall is installed across the tank at right angles to the moving direction of the mist-containing air, and outside air is introduced from the outside air intake port through this outside air introduction cylinder. Because of this configuration, the mixing action at the first stage in this outside air introduction portion can be performed efficiently. For this reason,
The mixing efficiency of the entire mixing tank is increased, and the coarsening effect of the mist is further promoted.

[Brief explanation of drawings]

FIG. 1 is an overall side view of a mist removing device according to an embodiment of the present invention, FIG. 2 is a sectional view of a mist removing device in the same device, FIG. 3 is an enlarged vertical sectional view of the mixing tank, and FIG. Figure 3 - line, Figure 5 is the same -
It is a sectional view of each line. A...Mist remover, B...Mixing tank, 1...Suction port of the mist remover, 2...Discharge port of the mixing tank, 3...Connection duct, 5...Suction fan in the mist remover, 6...Same rotation filter, 9 , 10... Adsorption filter constituting the outer peripheral filter layer, 11... Same space, 17... Mist-containing air intake port of the mixing tank, 18... Outside air intake port,
20... Outside air introduction tube, 19... Numerous holes of the outside air introduction tube, 22, 23, 24... Partition plate, 29, 30, 31
...Vent holes in the same partition plate, 25, 26, 27, 28... First to fourth chambers partitioned by the partition plate.

Claims (1)

[Claims] 1 Consisting of a mist remover and a mixing tank, the mist remover includes a suction fan and a rotating filter that attaches the mist in the mist-containing air sucked in from the suction port by the suction fan and shakes it off in the outer circumferential direction. and an outer peripheral filter layer that captures the mist blown away by the rotating filter and moves it along the flow of air toward the exhaust port. The mist remover includes an inlet, an outside air inlet for sucking outside air from a direction perpendicular to the mist-containing air, and an outlet connected to the inlet of the mist remover, and has a ventilation hole inside. By the diaphragm,
The mixing tank is arranged such that an outside air introduction cylinder, which is divided into a plurality of chambers between the mist-containing air intake port and the discharge port, and has a plurality of holes provided in the peripheral wall therein, is in communication with the outside air intake port. A mist removing device characterized in that the mist removing device is provided inside the mist-containing air in a direction perpendicular to the moving direction of the mist-containing air.