JPH1043533A - Air filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air filter device capable of making the whole structure compact. SOLUTION: This air filter device is provided with a tank 21 and a parting plate 22 for partitioning the tank 21 into an upper part 21a and an under part 21b. An opening 51 is formed on the parting plate 22 and a cylindrical filter element 3 is arranged on the opening 51 in the upper part 21a. A wire mesh vessel 8 containing active carbon is provided in the under part 21b in accordance with the filter element 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter device used, for example, for filtering air sent as a raw material to an ozone generator, and more particularly to an air filter device having a compact structure.

[0002]

2. Description of the Related Art For example, in an ozone generator, air as an ozone raw material is dried, filtered, and sent to an ozone generator. Therefore, an air filter is generally incorporated in the ozone generator.

FIG. 5 shows the configuration of such an air filter. In FIG. 5, an air supply device 1 for supplying raw material air
00, the air supply device 100 is provided with the blower 1
1, a cooler 102, a cooling dryer 103 and an adsorption dehumidifier 104 are connected in series. A communication pipe 108 is connected to the adsorption type dehumidifier 104, and the communication pipe 10
An air filter 105 is connected to 8. The air that has passed through the air filter 105 reaches the ozone breaker 106 through the communication pipe 109, and further reaches the ozone generator 107 through the communication pipe 110.

The air filter 105 and the ozone breaker 106 will be described in detail with reference to FIG. In FIG. 6, air sent from the adsorption type dehumidifier 104 to the air filter 105 enters the filter tank 1 from the air inlet 5 of the air filter 105, and the filter element 3 provided therein
And then enter the ozone breaker tank 6 of the ozone breaker 106 through the communication pipe 109. Inside the ozone breaker tank 6 of the ozone breaker 106, an activated carbon wire mesh container 8 is placed on a support ring 6a fixed in the ozone breaker tank 6, and air passes through the activated wire mesh container 8. It flows out from the air outlet 9.

Generally, the air sent to the air filter 105 and the ozone breaker 106 is compressed, so that the air filter 105 and the ozone breaker 106 have an airtight structure. To maintain the airtightness, the air filters 105 and the ozone breaker 106 are provided with lids 2 and 7 and packings 10a, 10b and 10c, respectively.

The air filter 105 will be described in more detail with reference to FIG. In FIG. 7, a communication pipe 19 is inserted and fixed to the bottom plate 1a of the filter tank 1 of the air filter 105. The filter element 3 is mounted on a support ring 12 provided on the communication pipe 19, and a holding plate 15 is provided on the filter element 3. Communication pipe 19
The filter element 3 is fixed between the support ring 12 and the holding plate 15 by tightening the plurality of studs 13 provided on the supporting member 12 and the nut 14.

As shown in FIG. 6, the filter tank 1 of the air filter 105 and the ozone breaker tank 6 of the ozone breaker 106 are fixed to a floor or a base by legs 16. As the activated carbon of the wire mesh container 8 in the ozone breaker 106, a commercially available product name, Cecard K
R and the like are used.

In FIG. 5, an air filter 105 filters dust in the dry air sent from the air supply device 100 and sends clean air to the ozone generator 107. The ozone breaker 106 returns the residual ozone in the ozone generator 107 flowing back to the air supply device 100 to oxygen when the operating ozone generator 107 is stopped in an emergency, and the air supply device 100 is corroded by ozone. Play a role in preventing things.

During this time, the filter element 3 built in the air filter 105 is clogged by dust. The activated carbon in the activated carbon wire mesh container 8 of the ozone breaker 106 deteriorates when it comes into contact with ozone. In this sense, both are consumable parts and need to be replaced periodically.

In this case, if the replacement of the filter element 3 is neglected, the pressure loss increases and the pressure of the ozonized air blown from the ozone generator 107 to the ozone reaction tower (not shown) decreases, and the ozone of the object to be treated is reduced. The treatment is hindered, and the ozone generation efficiency is reduced. On the other hand, if the replacement of activated carbon is neglected, when an emergency stop such as a power failure is repeated, a part of the activated carbon is ashed (changes from black to white), and the effect of returning ozone to oxygen is reduced, and residual ozone is reduced. Flows to the upstream equipment of the air flow. In this case, parts having no ozone resistance such as a ferrous part, a non-ferrous metal part and a packing of each device are damaged, and further accidents are caused. As described above, it is important to periodically manage the replacement of the filter element 3 and the activated carbon.

As shown in FIG. 6, when the filter element 3 needs to be replaced, the air pressure difference between the upstream side and the downstream side of the filter element 3 is detected by a differential pressure gauge 20 provided in the filter tank 1 via pipes 20a and 20b. To determine. At the time of replacement of the activated carbon, since there is no suitable means to detect the discoloration of the activated carbon, the lid is opened and a visual check is performed during periodic inspection (about once a year).

[0012]

SUMMARY OF THE INVENTION Conventional air filter 1
05 and the ozone breaker 106, the air filter 1
05 and the ozone breaker 106 increase in size, causing the following problem.

[0013] That is, the entire ozone generator becomes large, but the installation space is reduced. Therefore, as shown in FIG. 8, the air filter 1 is placed on the ozone breaker 106.
It is also conceivable to stack and install 05.

However, in FIG. 8, since the mass of the air filter 105 above the ozone breaker 106 exceeds 100 kg even for a medium-sized one, the ozone breaker 106
In order to remove the lid, the air filter 105 must be moved. A large lifting device is connected to the air filter 1
Getting ready for the 05 move is difficult. Also, when the air filter 105 is moved by a large number of people, the space is narrow and the scaffolding is poor, so it is difficult from a safety standpoint.
It is also required to check the discoloration of the activated carbon without removing the cover 7 of the ozone breaker 106.

The present invention has been made in view of the above points, and has as its object to provide an air filter device which can be easily handled and has a compact structure.

[0016]

According to the first aspect of the present invention,
A tank, a partition plate attached to the tank and partitioning the inside of the tank into an upper part and a lower part, and having an opening; a filter element provided in an upper part in the tank; and a filter element provided in a lower part in the tank. And an activated carbon container which is in communication with a filter element through an opening of a partition plate and is filled with activated carbon.

According to a second aspect of the present invention, the filter element has a hollow cylindrical shape, and a window for visually checking the activated carbon in the activated carbon container is provided at the upper portion of the tank through the hollow portion of the filter element and the opening of the partition plate. The air filter device according to claim 1, wherein the air filter device is provided.

According to the first aspect of the present invention, the filter element is provided in the upper portion of the tank, and the activated carbon container filled with activated carbon is provided in the lower portion.

According to the second aspect of the present invention, the activated carbon in the activated carbon container can be visually observed from the window at the top of the tank through the hollow portion of the filter element and the opening of the partition plate.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of an air filter device according to the present invention. FIG.
As shown in FIG. 2, the air filter device 50 includes a tank 21 and a partition plate 22 mounted in the tank 21 and partitioning the inside of the tank 21 into an upper portion 21 a and a lower portion 21 b. Among them, the partition plate 22 is supported by a middle plate 21c in the tank 21 via a packing 10d, and the partition plate 22 is fixed to the middle plate 21c by a holding bolt 28. The partition plate 22 has an opening 51.
Is provided.

A hollow cylindrical filter element 3 is disposed above the partition plate 22.
Are studs 24 on a transparent plastic holding plate 25.
Is fixed between the partition plate 22 and the holding plate 25 by tightening the stud 24 with the nut 14.

The activated carbon wire mesh container 8 containing the activated carbon 33 is attached to the lower part of the partition plate 22 by bolting. The upper and lower surfaces of the activated carbon wire mesh container 8 are made of a wire mesh, and the side surfaces are made of a sealing plate, so that air can flow only in the vertical direction.

As described above, the partition plate 22 is attached to the middle plate 21c of the tank 21 via the packing 10d.
The distance between the inner surface of the tank 21 and the outer surface of the filter element 3 is as narrow as 100 mm or less. For this reason, the mounting structure of the partition plate 22 is as follows so that it is not necessary to insert a hand into a narrow place during the mounting operation.

That is, as shown in FIG. 2, a plurality of guide plate supports 29 are provided on the partition plate 22, and the guide plate supports 29 are provided.
Is provided with a guide plate 22a. Presser bolt 2
8 penetrates through the guide plate 22a and the opening 28a of the partition plate 22, and is inserted into the screw hole 21d of the middle plate 21c.
Further, a plurality of guide pins 30 are provided on the middle plate 21c in order to facilitate alignment between the opening 28a of the partition plate 22 and the screw hole 21d of the middle plate 21c, and the guide pins corresponding to the guide pins 30 are provided on the partition plate 22. A hole 22e is provided.

The opening 51 is formed in the partition plate 22 as described above.
The opening 51 is provided at the upper part 21 of the tank.
The opening through which the air that has passed through the filter element 3 installed in the tank a flows to the tank lower part 21b. Further, the air inlet 5 is provided on the side surface of the upper portion 21a of the tank 21, and the air outlet 9 is provided on the side surface of the lower portion 21b of the tank 21.

The tank 21 is supported by the legs 16, and the lid 2 is bolted to the upper surface of the tank 21 via a packing 10a. Further, a portion of the lid 2 located directly above the filter element 3 is opened, and this opening 2
A viewing window 26 of a transparent pressure-resistant glass plate is provided at a through a packing 10e. The viewing window 26 is fixed to the lid 2 by a holding plate 27 and is airtightly attached. A differential pressure gauge 20 is provided between the air inlet 5 and the air outlet 9 via pipes 20a and 20b.

Next, the operation of the present embodiment having such a configuration will be described. 1 and 2, the dry air flowing into the tank upper part 21a from the air inlet 5 passes through the filter element 3, enters the tank lower part 21b from the opening 51 of the partition plate 22, and is activated carbon wire mesh container. The air passes through the activated carbon 33 in the air outlet 8 and flows out from the air outlet 9.

According to the present embodiment, the height dimension can be greatly reduced by integrating the tank of the air filter and the tank of the ozone breaker.

By illuminating the inside of the tank upper portion 21a with a flashlight from the viewing window 26 of the lid 2, the activated carbon 33 in the activated carbon wire mesh container 8 can be confirmed through the holding plate 25 and the hollow portion 52 of the filter element 3, and the activated carbon can be confirmed. It is possible to determine when to replace 33.

Further, by opening the lid 2, the filter element 3 and the activated carbon wire mesh container 8 can be easily taken out and attached. In this case, the nut 14 and the holding plate 25
, Only the filter element 8 can be taken out. By removing the holding bolt 28, the filter element 3, the partition plate 22, and the activated carbon wire mesh container 8 can be integrally removed. When the filter element 3, the partition plate 22, and the activated carbon wire mesh container are mounted, positioning can be easily performed by positioning the guide pins 30 and the guide pin holes 22e.

On the other hand, the air outlet 9 of the air filter device 50
, The air containing ozone can be reversely flowed to pass through the activated carbon 33 and the filter element 3. In this case, the air containing ozone becomes sterile due to the sterilizing power of ozone, and returns ozone to oxygen by passing through the activated carbon 33.
By filtering dust with the filter element 3, it is possible to obtain clean sterile air.

Next, another embodiment of the present invention will be described with reference to FIG. The embodiment shown in FIG. 3 is one in which a hollow portion 52 of a filter element 3 is filled with activated carbon 33, and the other parts are substantially the same as the embodiments shown in FIGS.

In FIG. 3, the same portions as those of the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description will be omitted. As shown in FIG. 3, a partition plate 2 having an opening 51
2, a hollow cylindrical filter element 3 is provided,
The filter element 3 is held between the holding plate 25 through which the stud 24 passes and the partition plate 22. Opening 5
1 is provided with a wire mesh 34, and the hollow portion 52 of the filter element 3 is filled with activated carbon 33. in this case,
The filter element 3 and the activated carbon 33 can always be replaced simultaneously, and the structure can be simplified.

Next, still another embodiment of the present invention will be described with reference to FIG. In the embodiment shown in FIG. 4, a plurality of filter elements 3 are provided in an upper part 21a of a tank 21, and an activated carbon wire mesh container 8 is provided in a lower part 21b of the tank 21 corresponding to the filter element 3. The other parts are substantially the same as those of the embodiment shown in FIGS.

In FIG. 4, the same portions as those of the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 4, the tank 21 is provided with a partition plate 22 having a plurality of openings 51, 51, which divides the inside of the tank 3 into an upper portion 21a and a lower portion 21b. A hollow cylindrical filter element 3 is disposed on each opening 51 of the partition plate 22. Each filter element 3 includes a partition plate 22 and a holding plate 25.
The stud 24 is passed through the holding plate 25 and the filter element is fixed by tightening the stud 24 with the nut 14.

In the lower part 21b of the tank 21, corresponding to each filter element 3, an activated carbon wire mesh container 8 is provided.
Is provided.

As described above, by providing the plurality of filter elements 3 and the activated carbon wire mesh container 8 in the tank 21, it is possible to provide an air filter device having different capacities according to the air volume.

[0039]

As described above, according to the present invention, an air filter device having a compact structure as a whole can be provided. Therefore, when the air filter device is incorporated in the ozone generator, the entire ozone generator can be reduced in size.

[Brief description of the drawings]

FIG. 1 is a structural diagram showing an embodiment of an air filter device according to the present invention.

FIG. 2 is a view showing a partition plate and a middle plate of the air filter device shown in FIG. 1;

FIG. 3 is a structural view showing another embodiment of the present invention.

FIG. 4 is a structural view showing still another embodiment of the present invention.

FIG. 5 is a schematic view of an ozone generator in which a conventional air filter device is incorporated.

FIG. 6 is a structural view showing a conventional air filter and an ozone breaker.

FIG. 7 is a detailed view of the air filter shown in FIG. 6;

FIG. 8 is a structural diagram showing another example of a conventional air filter and an ozone breaker.

[Explanation of symbols]

 2 Lid 3 Filter element 8 Activated carbon wire mesh container 21 Tank 21a Upper part 21b Lower part 22 Partition plate 26 Viewing window 33 Activated carbon 50 Air filter device

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Osamu Takase 2-24-24 Harumi-cho, Fuchu-shi, Tokyo Toshiba FA System Engineering Co., Ltd.

Claims (2)

[Claims] 1. A tank, a partition plate mounted in the tank and partitioning the inside of the tank into an upper part and a lower part, and having an opening, a filter element provided in an upper part of the tank, An air filter device, comprising: an activated carbon container provided at a lower portion, communicating with a filter element through an opening of a partition plate, and having an activated carbon filled therein. 2. The filter element has a hollow cylindrical shape, and a window is provided at the upper part of the tank through the hollow part of the filter element and the opening of the partition plate for viewing the activated carbon in the activated carbon container. The air filter device according to claim 1.