JPH0719555A - Filter for air ventilation - Google Patents

Abstract

PURPOSE:To prevent oil leakage from occurring at a midway part of of a thin plate member by a method wherein the thin plate material is provided with an oil guiding projection or an oil guiding recess directing in an upward or downward direction and an inclined projection or an inclined recess extending from a proper location to a slant upper direction, and some aeration holes are arranged within areas to be segmented. CONSTITUTION:Upper surfaces of flat planes 9a, 9b of a thin plate 9 at a ventilation filter 6 are provided with substantial equal-spaced apart oil guiding projections 10 in a rightward or a leftward direction directed upwardly or downwardly. Inclined projections 11 are arranged to extend from several location between the lower end of the projection and at intermediate location toward slant upward directions in both sides. A plurality of aeration holes are arranged within each of the regions defiend by them. Then, in the case that air containing hot water vapor, oily smoke and combustion gas or the like generated during cooking operation at a gas cooking device, for example passes through the aeration holes, oily content in the air adheres to a rear surface of the thin plate member 9. Then, oil flowing down along the rear surface of the thin plate member 0 reaches the inclined projection 11, resulting in that the oil flows slantly along the projection 10, passes through the lower end oil passage hole and is guided to an oil recoverying container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation filter which is attached to a range hood, a ventilation hole for a kitchen or the like and collects oil contained in passing air.

[0002]

2. Description of the Related Art As a conventional ventilation filter of this type, a filter using a lath net, a metal net, a punching board, or the like is used, and a large number of louver-shaped cut-and-raised parts are formed on a thin metal plate (for example, Japanese Utility Model Publication No. 2-43456, Japanese Utility Model Publication No. 62-398
Various types are provided, such as Japanese Patent No. 16).

[0003]

However, the above-mentioned conventional device has a problem that oil dripping occurs from the middle of the plate surface of the filter.

In order to prevent this, it is necessary to guide the oil to the oil recovery container and recover it so that the oil once captured in the filter does not stay.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a ventilation filter which prevents oil dripping.

[0006]

In order to achieve the above object, the present invention has a plurality of vent holes formed in a thin plate member which is attached to a ventilation port in a slightly upwardly inclined state, and an air passing through the vent holes. A ventilation filter adapted to collect the oil contained therein, comprising a thin plate member with a convex or concave line for oil guide facing in the vertical direction and an inclined convex line extending obliquely upward from the appropriate position. It is characterized in that a strip or an inclined recess is provided, and a plurality of vent holes are arranged in each region partitioned by them.

Upon implementation, it is preferable to add the following configuration.

(1) Vents are formed by punching out a cut-and-raised part of a suitable shape or a suitable shape.

(2) Each cut-and-raised portion is formed such that the cut end has an arc shape or a triangular shape and is bulged in a spherical shape or a mountain shape in the same direction.

(3) A plurality of cut-and-raised parts are arranged immediately below the center of the blow-out port so that the center of the raised part of the cut-and-raised part of the next stage is located.

(4) A plurality of thin plate members having cut-and-raised portions are combined in parallel at a required interval.

(5) In the case of the above (4), at least two thin plate materials are combined so that the cut-and-raised parts face each other inward.

[0013]

[Function] When the air passes through the ventilation hole formed in the thin plate material, the oil contained in the air is trapped and adheres to the thin plate material when passing through the ventilation hole, and the oil is even thinner. The oil flows along the plate material, is guided by a convex or concave line for oil guide, and is collected in the oil recovery container. Therefore, since the flow path for oil recovery is formed, oil does not stay in the thin plate material, and it is possible to prevent oil dripping from the middle of the filter.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 4 shows a state in which the ventilation filter of the present invention is attached. (1) shows a ventilation hood body (2) arranged immediately above a gas stove (not shown) in a kitchen. )
Is the suction port (4) of the ventilation duct (3) in the hood body (1)
A ventilation fan provided on the side, (5) is a motor for driving the fan, and the ventilation filter (6) of the present invention has a suction port (4) in the hood body (1), a lower front direction, and a front upward direction. Is arranged in an inclined state.

(7) is an oil recovery container provided on a support plate (8) for supporting the lower end of the filter (6).

As shown in FIG. 1, the filter (6) is composed of two aluminum light alloys in which the edges (9b) are bent at right angles on four sides of a rectangular flat surface (9a), and other metals. A thin plate material (9) made of synthetic resin or synthetic resin is fitted to each other so that the front and back sides are opposite to each other.

Since both thin plate members 9 have substantially the same shape, only the lower one will be described in detail in the following description.

On the upper surface of the flat surface portion (9a) of the thin plate material (9), four oil guide ridges (10) directed in the vertical direction are provided at substantially equal intervals in the left-right direction, and each ridge is formed. Inclined ridges extending diagonally upwards from both sides of the bottom of the strip (10) to several sides.
(11) is provided.

A plurality of cut-and-raised parts (12) are formed in substantially the same arrangement in each area defined by the convex stripes (10) and (11) on the upper surface of the flat surface part (9a).

As shown in FIGS. 2 and 3, each cut-and-raised portion (1
In 2), the cut end forming the air outlet (13) has a semicircular or arcuate shape from the lower rear side, and rises in a substantially quarter spherical shape toward the upper rear side.

The cut-and-raised portion (12) is arranged so that the center of the spherical raised portion (12a) of the next stage is located immediately below the center of the blow-out port (13) of the upper stage, and The vertical pitch of each row adjacent to is slightly shifted.

An oil recovery container is provided at the lower end of the thin plate (9).
An oil passage (not shown) communicating with (7) is formed.

The upper thin plate material (9) is such that the raised portions (12a) of the cut-and-raised parts (12) face the front lower direction, and the lower thin plate material (9) is
The completed filter (6) superposed on (9) has flat surfaces on both upper and lower sides without protrusions.

According to this embodiment, the air containing steam, oil smoke, combustion gas, etc., generated during cooking with the gas stove,
As shown by the broken line arrow in FIG. 2, when passing through each cut-and-raised part (12) of the thin plate material (9) below the filter (6), oil content (sometimes water and dust etc.) contained in the air is passed. Is included)
The oil that adheres to the spherical inner surface (12b) of (12a) is
As shown by the solid line arrow in Fig. 3 (and Fig. 3), the flow of air through the cut-and-raised part (12) causes the blowout port (13) along the inner surface (12b).
Blown up to.

Since the edge (12c) of the outlet (13) is arcuate when viewed from the lower rear, the oil blown up to the edge (12c) is divided into two parts from the center of the edge (12c). Run down along the edge (12c). At this time, the flow-down distance is short and the air is slightly accelerated by the passing air, so that the oil flows down quickly.

Therefore, the oil is less likely to stay in the middle of the edge (12c) and be scattered in the passing air, and the oil collecting efficiency is improved accordingly.

The oil flowing down along the edge (12c) then flows down along the back surface of the thin plate material (9), that is, the rear upper surface.

At this time, the air outlet (1
Immediately below the center of (3), the center of the spherical ridge (12a) of the next cut-and-raised part (12) is located.
The oil that has flowed down from the outlet (13) of 2) along the back surface of the thin plate material (9), as shown by the arrow in FIG.
It is distributed to the left and right at the center of the upper end of the raised portion (12a) of 2) and flows down along both sides of the raised portion (12a).

Therefore, little oil runs over the upper surface of the raised portion (12a), and even if it rides up, the raised portion (1
Since 2a) has a spherical shape, it is distributed to the left and right in the middle, and eventually flows down to both sides of the ridge (12a), reaches the cut end at the lower end of the ridge (12a), and from there in the passing air. Almost no oil is scattered around.

From the cut-and-raised part (12) at the bottom of each region to a thin plate material
When the oil flowing down along the back surface of (9) reaches the slanted ridge (11), it flows down diagonally along it, and then joins at the ridge (10), this time ridge (10). ), It flows down to the oil recovery container (7) from the lower end of the thin plate material (9) through the oil passage hole.

5 to 6 show a second embodiment of the present invention. The same members as those of the first embodiment (including those having a slightly different shape) are designated by the same reference numerals, and detailed description thereof will be omitted.

According to the second embodiment, the flat portion of the thin plate material (9)
(9a) are provided with oil guide recesses (14) directed in the up-down direction at substantially equal intervals in the left-right direction, and from the upper end of each recess (14), the lower end, and several places in the middle to both sides. An inclined groove (15) extending obliquely upward is provided in the.

Therefore, since the inclined groove (15) is provided above the upper surface of the flat portion (9a) of the thin plate material (9) from the upper end of the groove (14), the Y-shaped inclined groove ( 15) (15) is formed, and oil recovery in the upper part can be performed without waste.

A plurality of cut-and-raised portions (12) are formed in substantially the same arrangement in each area defined by the concave stripes (14) and (15) on the upper surface of the flat surface portion (9a).

In each cut-and-raised portion (12), the cut-out opening (13) forming a triangle has a triangular shape and is bulged in a mountain shape.

Even with the structure of the second embodiment, the oil can be efficiently recovered as in the case of the first embodiment.

7 to 8 show a third embodiment of the present invention. The same members as those of the first embodiment (including those having a slightly different shape) are designated by the same reference numerals, and detailed description thereof will be omitted.

According to the third embodiment, the flat portion of the thin plate material (9)
(9a) is provided with vertically extending oil guide recesses (14) at substantially equal intervals in the left-right direction, and from the upper and lower ends of each recess (14) and several places in the middle to both sides. An inclined groove (15) extending obliquely upward is provided in the.

A plurality of ventilation holes (16) are formed in substantially the same arrangement in each area defined by the recesses (14) and (15) on the upper surface of the flat surface portion (9a). Each vent hole (16) is formed by punching out in an arc shape.

An oil passage hole (17) is provided at the intersection of the vertical groove (14) and the inclined groove (15) in the lower part of the flat surface (9a) of the thin plate material (9). The oil is guided to the collection container (7).

Even with the structure of the third embodiment, the oil can be recovered as in the case of the first embodiment.

The present invention is not limited to the above embodiment, and the following variations and modifications are possible.

(1) The shape of the cut and raised portion (12) is a horizontal rectangle,
Others.

(2) The cut and raised portions (12) are arranged irregularly.

(3) Vertical ridges (10) or ridges (14)
And the inclined concave line (15) or the inclined convex line (11) are different from each other.

(4) The slanted ridges (11) or the slanted ridges (15) are
The protrusions (10) or the recesses (14) in the up-down direction are centered and are provided alternately in the left and right directions.

(5) The shape of the vent hole 16 is stamped into a circle, triangle, quadrangle, polygon, star, ellipse, oval or the like.

[0049]

According to the present invention, the following effects can be obtained.

By providing a convex strip or a concave strip for guiding oil on the thin plate and an inclined convex strip or a concave strip extending obliquely upward from the thin strip, it is possible to prevent oil from staying on the thin strip. It can be guided to the oil recovery container, and it is possible to prevent oil dripping from occurring in the middle of the thin plate material.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is a vertical sectional side view of a ventilation device equipped with an embodiment of the present invention.

FIG. 5 is an enlarged plan view showing a part of the second embodiment of the present invention.

FIG. 6 is a vertical sectional view of a second embodiment of the present invention.

FIG. 7 is an enlarged plan view showing a part of the third embodiment of the present invention.

8 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

(1) Hood body (2) Ventilation fan (3) Ventilation duct (4) Suction port (5) Motor (6) Filter (7) Oil recovery container (8) Support plate (9) Thin plate material (9a) Flat surface (9b) Edge (10) Convex strip (11) Convex strip (12) Cut and raised part (12a) Raised part (12b) Inner surface (12c) Edge (13) Air outlet (14) Recessed line (15) Recessed line (16) Ventilation hole (17) Oil passage hole

Claims (5)

[Claims] 1. A ventilation for forming a plurality of ventilation holes on a thin plate member, which is attached to a ventilation port in a slightly upwardly inclined state, to collect oil contained in air passing through the ventilation holes. A filter, wherein the thin plate member is provided with a convex or concave line for oil guide which is oriented in the vertical direction, and an inclined convex line or an inclined concave line extending obliquely upward from a proper position thereof, and is partitioned by them. A ventilation filter having a plurality of ventilation holes arranged in each region. 2. The ventilation filter according to claim 1, wherein the ventilation hole is formed by a cut and raised portion. 3. The ventilation filter according to claim 1, wherein each of the cut-and-raised parts is formed so that the cut end has an arc shape and rises spherically in the same direction. 4. Each of the cut and raised portions has a triangular cut end,
The ventilation filter according to claim 1 or 2, wherein the ventilation filter is formed so as to bulge in a mountain shape in the same direction. 5. The ventilation filter according to claim 1, wherein each ventilation hole is formed by punching into a suitable shape.