JPH08141342A - Dust collection member with turning panel - Google Patents

Abstract

PURPOSE: To capture and remove an object effectively from a fluid to be treated by both centrifugal action and filtration action. CONSTITUTION: A dust collection member is integrally constituted of a filter 4 arranged behind a turning panel 1 consisting of turning parts 3 with a gyratory fin 3a. First a gas G containing oil reaching the turning panel 1 becomes a powerful gyratory current at each turning part 3, and most of the contained oil is centrifuged. The gyratory current G1 originating from the turning panel 1 is almost completely free from the remaining contained oil by filtration and adsorption by the filter 4 positioned behind the turning panel 1. In this case, the gyratory current G1 passes obliquely through the filter 4, so that the filtration efficiency of the filter 4 is high. In addition, the gyratory current at the filter 4 is controlled, so that a vibration or an unpleasant noise caused by an inter-gyratory current interference does not generate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting member for collecting an object such as dust or oil contained in dust or a gas flow, and particularly including fine oil particles (oil mist) or oil vapor. The present invention relates to a dust collecting member configured to efficiently remove these oil mist and oil vapor from a gas stream.

[0002]

2. Description of the Related Art For example, in a kitchen of a hotel or a restaurant, a large amount of oil is formed into fine particles (mist) or vapor during the cooking process. Discharging such oil mist or oil vapor, or gas containing steam in some cases (hereinafter referred to as "oil-containing gas") to the outside as it is is one of the causes of air pollution, and oil adhering to the exhaust duct. There is also a risk of fire causing a fire. For this reason, it is necessary to remove the oil content contained in the oil-containing gas before it is discharged to the outside, and various devices for oil removal have been proposed and used at present.

[0003]

Among the conventional oil removing devices of this kind, for removing oil vapor, for example, a filter filled with an adsorbent such as activated carbon is used to filter the oil content of the oil-containing gas. What is adsorbed and removed, or the flow path of the oil-containing gas is suddenly changed or swirled by a baffle plate or a perforated plate, or the oil content is mainly removed by inertia by colliding this oil-containing gas with the wall surface. Inertial collision method is used.

In the above-mentioned method, for example, in the case of the filtration method, the collection efficiency can be increased, but the efficiency of removing the collected oil component from the filter is low, and therefore the filter has a relatively short removal time due to this low removal efficiency. Clogging occurs,
As a result, a rapid increase in pressure loss occurs. In addition, although the efficiency of removing the collected oil is high in the inertial collision method, in order to efficiently remove the oil itself from the oil-containing gas, the flow velocity of the oil-containing gas must be increased, and the capacity of the blower must be increased. There are advantages and disadvantages, such as high operating cost of the device.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above technical requirements, and includes a swirl panel for generating a swirl flow in a target fluid, and a filtration system arranged behind the swirl panel. The dust collecting member is characterized in that it is a combination with the above filter.

[0006]

The object fluid such as oil-containing gas is first made into a swirl flow by the swirl means such as fins formed on the swirl panel, and the object to be collected, for example, oil content, contained by the collision of the fluid with the fins and the centrifugal force due to the swirl flow. Are centrifuged. On the other hand, the swirling flow containing oil that has escaped the centrifugal separation reaches the filtration filter behind, but due to this swirling flow, the fluid obliquely flows into the filtration filter and passes through the filtration filter, so the fluid passes through the filtration filter. The distance becomes longer than the actual filtration filter thickness, and the filtration efficiency in the filtration filter is also increased.

[0007]

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

1 and 2 show a swivel panel. Arrow 1
Shows the entire swivel panel, and the swivel panel 1 has a plurality of swivel portions 3 formed on a substrate 2 made of metal or a material having the same effect. The swirl unit 3 is configured such that a plurality of swirl fins 3a are bent and formed on the substrate 2 so that the fluid passing through the swirl unit 3 is swirled by the swirl fins 3a. 2 shows the structure of the swivel unit 3 more concretely, the swirl fin 3a integral with the substrate 2 is formed by bending a preformed incision for the substrate 2 as shown in FIG. This swirl fin forming part is referred to as a swirl part 3. In addition to the integral formation of the swirl fin 3a with the substrate 2 as described above, an opening is previously formed in a portion corresponding to the swirl portion of the substrate 2, and a separately formed swirl fin is fitted into this opening portion. However, the fin forming method is not limited to the integral method.

As shown in FIG. 3, behind the swivel panel 1 formed by forming the swivel portions 3 at a plurality of positions as described above.
The filter 4 is arranged as shown in FIG. As the filtration filter, various kinds of materials such as a metal foam commonly referred to as a metal foam, porous plastics, and porous ceramics can be used. The filter 4 and the swivel panel 1 are integrally formed to form a dust collecting member, which is attached to each dust collecting device.

In the dust collecting member having the above structure, the external fluid is sucked into the dust collecting device through the dust collecting member by the blower (not shown) arranged behind the filter 4. However, in this case, first, the fluid (hereinafter, referred to as “oil-containing gas” as an example) G is given strong swirling energy by the swirling fins 3a in the swirling portion 3 of the swirling panel 1, and the swirling flow G1 is used as the swirling panel. Pass 1. At this time, the oil-containing gas G collides with the swirling fins 3a to condense a considerable amount of oil vapor and the like, and the liquefied oil is deposited on the peripheral edge of the back surface of each swirling panel 3 by the strong centrifugal force of the swirling flow. It flows down, flows down behind the swivel panel 1 together with the oil component generated from the other swirling part, and flows into and is collected in a predetermined oil sump (not shown).

On the other hand, the swirling flow G1 of the oil-containing gas G flowing out from each swirling section 3 flows into the filtration filter 4 at the rear side, and most of the oil component escaped in the swirling section is adsorbed and removed by filtration. It In this case, first of all, most of the oil particles and dust having a large mass are centrifugally separated when passing through the swivel panel 1, so that the clogging of the filter 4 can be reduced. Therefore, the swirling flow G reaching the filtration filter 4
Most of the collection targets included in 1 are extremely fine oil particles and oil vapor having a small mass. Since this fluid has the swirling flow G1 as described above, the fluid in the filtration filter 4 has a strong tendency to flow obliquely into and pass through the filtration filter 4 as shown in FIG. 3B. Is greater than the width (thickness) W of the filtration filter 4. As a result, even minute particles can be effectively collected, and the collection efficiency as a filtration filter is also increased.

Further, if only the swivel panel 1 is used, a large number of swirl flows G1 generated behind the swivel panel may interfere with each other to disturb the air flow, resulting in discontinuous vibration noise and growl. However, since the swirling flow is rectified by the filter 4 arranged behind the swivel panel 1, an undesired vibration or noise can be almost completely prevented.

4 and 5 show a second embodiment of the present invention.

First, mainly in FIG. 4, another plate member 5 is closely arranged behind the substrate 2. A ring-shaped duct portion 6 is formed on the plate member 5 at a position corresponding to the formation portion of the swivel portion 3 of the substrate 2 so as to cover the peripheral portion of the swivel portion 3 as shown in FIG. Reference numeral 7 is a groove provided on the back surface of the substrate 2, and each groove starts from the lower portion of each swivel unit 3 and communicates with the lower portion of the substrate, as shown in FIG. It is configured to connect directly or indirectly to the oil sump.

In the above structure, first, most of the oil content of the oil-containing gas G passing through each swirl part 3 of the swivel panel 1 moves to the periphery of the swirl part due to the collision and centrifugal separation action in the swirl part 3. This moved oil 8 is in the duct 6
Along the inner wall of the substrate 2 due to its own weight, and flows down to the oil sump through the groove 7 formed in the substrate 2. That is, in this embodiment, the oil component centrifugally separated in each swirl unit 3 is reliably collected in the duct unit 6,
Moreover, the collected oil component 8 can be reliably moved to the oil reservoir via the groove 7.

The present invention has been described above by taking an oil-containing gas as an example of the fluid to be treated, but the fluid to be treated of the present invention is not limited to this oil-containing gas. For example, processing fluids with various dusts of different masses can be used for various types of fluids, such as removing dusts with large masses with a swivel panel and fine dusts with a filter behind. It can be easily guessed by a trader.

Further, in the illustrated construction, the dust collecting member having one swivel panel 1 and one filter 4 is shown, but by collecting at least one of the swivel panel 1 and the filter 4, a plurality of dust collecting members are provided. It is also possible to form a dust member.

[0018]

Since the present invention has the above-mentioned structure, first, most of the objects to be collected in the fluid, particularly the objects having a large mass, are collected and removed in the swirling portion, so that the filtration filter behind has a small mass. Since the object to be collected is mainly collected, the original function of the filtration filter can be effectively exerted, clogging of the filtration filter is reduced, and the dust collector can be efficiently used for a long period of time. Becomes

Further, since the fluid flowing into the filtration type filter is a swirl flow, the passage distance of the fluid in the filtration type filter becomes longer than the actual width of the filtration type filter, and the dust collection of the filtration type filter itself. It is also possible to improve efficiency.

Further, since a large number of swirling flows generated behind the swirling panel are rectified by the filter, there is no problem that the duct of the dust collector vibrates or makes an unpleasant noise.

[Brief description of drawings]

FIG. 1 is a partial front view of a swivel panel.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3A is a sectional view of a dust collecting member showing an arrangement state of a swirl panel and a filter, and FIG. 3B is a partial sectional view of the filter showing a swirl flow inflow state with respect to the filter.

FIG. 4 is a sectional view of a swivel portion of a swivel panel showing a second embodiment of the present invention.

5 is a front partial view of the swivel panel shown in FIG. 4. FIG.

[Explanation of symbols]

 1 swivel panel 2 substrate 3 swivel part 3a swivel fin 4 filtration type filter 5 plate material 6 duct part 7 groove 8 oil component G oil-containing gas G1 swirling flow

Claims (5)

[Claims] 1. A swivel panel characterized in that a swivel panel having a plurality of swivel parts formed on a substrate and a filtration type filter arranged behind the swivel panel are integrally formed. Dust collecting member. 2. Each of the swivel parts of the swivel panel is formed by a plurality of swirl fins formed by bending a part of a substrate and a fluid passage space generated by the bending of the swirl fins. A dust collecting member having a swivel panel according to claim 1. 3. A dust collecting member having a swivel panel according to claim 1 or 2, wherein a duct portion is formed on a rear surface of the swivel panel so as to surround a peripheral edge portion of each swivel portion. 4. The dust collecting member having a swivel panel according to claim 3, wherein a groove for moving the collected matter is continuously provided near a lower portion of each duct portion toward a lower portion of the substrate. 5. The dust collecting member having a swivel panel according to claim 4, wherein the groove is directly recessed from the back surface of the substrate on which the swirl portion is formed.