JP7086659B2 - Grease filter - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention is used by arranging it at an exhaust gas suction port in an exhaust hood installed above a cooking range in order to collect and collect oils and fats contained in oil smoke in exhaust gas generated during cooking. Regarding the grease filter.

As for the grease filter arranged in the exhaust gas suction port in the exhaust hood of the kitchen, those having various structures and functions have been conventionally proposed, but as those related to the present invention, for example, in Patent Document 1. There is a described "baffle type grease filter" and the like.

In the "baffle type grease filter", an oil / fat collection path meandering in a substantially S shape is formed between the first baffle and the second baffle, and the oil smoke is repeatedly compressed and expanded in this oil / fat collection path. The flow velocity of the oil smoke is increased by the compression process to efficiently collide the particles of the oil and fat with the baffle plate at high speed, and the temperature of the oil and fat is lowered by the expansion process to promote the aggregation of the oil and fat, and the degreasing efficiency is improved.

Jikkai Sho 57-152919

By using the "baffle type grease filter" described in Patent Document 1, the oil / fat removal rate (defatting efficiency) can be increased to some extent, but the oil / fat removal rate is improved, the pressure loss is reduced, and noise is reduced. Mitigation is an important issue that will continue to be requested.

Therefore, an object to be solved by the present invention is to provide a grease filter having a high oil / fat removal rate in oil smoke, which can reduce pressure loss and noise.

The grease filter according to the present invention is
A front baffle and a back baffle in which a plurality of gutter-shaped filter plates are arranged in parallel across a gap with their concave portions facing in the same direction in the inner peripheral region of the frame-shaped portion.
In a grease filter arranged so that the filter plates constituting the front baffle and the back baffle are parallel to each other and a part of the concave surface portion of the filter plate faces each other so as to be removable.
A protruding portion protruding toward the front baffle is provided at the center of the concave portion of the filter plate of the back baffle in the width direction .
A handle that penetrates the frame-shaped portion of the front baffle from the frame-shaped portion of the back baffle and projects to the front of the front baffle is provided in the region where the frame-shaped portion of the front baffle and the frame-shaped portion of the back baffle overlap. The handle can be stored in the frame-shaped portion of the back baffle .

With such a configuration, the exhaust gas flowing from the gap between the filter plates of the front baffle toward the concave portion of the filter plate of the back baffle comes into contact with the protruding portion and then splits in two directions and opposes the flow path. Without increasing the flow velocity, the gas flows along the concave surface of the filter plate of the back baffle, so that the chance of contact with the filter plate increases and the oil removal rate in the oil smoke increases. Further, since the exhaust gas flows without going against the flow path, the pressure loss is reduced and the noise is also reduced.

In the grease filter, it is desirable that the top of the protruding portion is located closer to the back baffle than the front surface of the filter plate of the front baffle.

With such a configuration, the flow path through which the oil smoke that has entered the grease filter passes is sharply reduced, so that the efficiency of removing oil and fat in the oil smoke is improved. If the top of the protrusion is farther from the back baffle than the front of the front baffle (when the top of the protrusion protrudes from the front of the front baffle), it is divided into two by the protrusion. Since the chance of the oil smoke coming into contact with the filter plate surface in the divided flow path is reduced, it does not contribute to the improvement of the oil / fat removal rate due to the adhesion to the filter plate surface. In addition, the oil and fat removed from the oil smoke due to the adhesion to the filter plate surface is efficiently guided from the back baffle to the lower part along the protruding part of the filter plate, but the top protrudes from the front of the filter plate of the front baffle. If so, there is a risk of dripping from the top into the kitchen room without being guided.

In the grease filter, it is desirable that the cross-sectional shape of the protruding portion is mirror-symmetrical with the center line in the width direction of the concave portion of the filter plate interposed therebetween.

With such a configuration, the exhaust gas in contact with the projecting portion is evenly divided and flows in two directions, so that the uneven inflow and flow of the exhaust gas are suppressed, which is effective in improving the oil removal rate. be.

In the grease filter, the cross-sectional shape of the protruding portion may include any one or more of a chevron, an acute angle chevron, a semicircle, a semi-elliptical shape, a curved wedge shape, a semi-polygonal shape, and a flat plate shape.

With such a configuration, the chance of oil smoke coming into contact with the protruding portion increases, which is effective in improving the oil / fat removal rate.

In the grease filter, the front surface of the front baffle penetrates from the frame-shaped portion of the back baffle to the frame-shaped portion of the front baffle in the region where the frame-shaped portion of the front baffle and the frame-shaped portion of the back baffle overlap. The handle is provided so as to protrude from the back baffle, and the handle can be stored in the frame-shaped portion of the back baffle .

With such a configuration, by storing the handle in the frame-shaped portion of the back baffle, the number of members protruding from the frame-shaped portion can be reduced, so that space can be saved during storage and transportation. can.

In the grease filter, the handle has a U-shaped main body portion and hook portions formed at both ends thereof, and the handle is provided in a plurality of openings opened in the frame-shaped portion of the back baffle. It is desirable that the hook portions of the above are inserted so that they can move forward and backward.

With such a configuration, it is possible to eliminate the step of fixing the handle to the frame-shaped portion by spot welding, which has been carried out in the conventional grease filter manufacturing process, so that the man-hours can be reduced. Since the shape of the hook portion is not limited, hat bending in which both ends of the U-shaped portion are bent outward, C-shaped bending in which both ends of the U-shaped portion are bent inward, and the like can be adopted.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a grease filter having a high oil / fat removal rate in oil smoke, which can reduce pressure loss and noise.

It is a perspective view which shows the grease filter which is an embodiment of this invention. It is a front view of the grease filter shown in FIG. It is a rear view of the grease filter shown in FIG. It is sectional drawing in the line AA in FIG. It is an end view of the cut portion in the line AA in FIG. It is a figure which shows the flow state of the exhaust gas passing through the grease filter shown in FIG. It is a figure which shows the pressure distribution of the exhaust gas passing through the grease filter shown in FIG. It is a figure which shows the flow state of the exhaust gas passing through a conventional grease filter. It is a figure which shows the pressure distribution of the exhaust gas passing through a conventional grease filter. It is an exploded perspective view of the grease filter shown in FIG. It is a front view of the front baffle shown in FIG. It is a rear view of the front baffle shown in FIG. It is sectional drawing in BB line in FIG. It is a partially omitted rear view of the back baffle shown in FIG. It is a rear view of the back baffle shown in FIG. FIG. 6 is a cross-sectional view taken along the line CC in FIG. It is a partially omitted perspective view which shows the process of attaching a handle to a back baffle. It is a partially omitted cut portion end view which shows the other embodiment about the filter plate of a back baffle. It is a partially omitted cut portion end view which shows the other embodiment about the filter plate of a back baffle.

Hereinafter, other embodiments relating to the grease filter 100 and the filter plate of the back baffle according to the embodiment of the present invention will be described with reference to FIGS. 1 to 19.

As shown in FIG. 10, the grease filter 100 shown in FIGS. 1 to 3 is formed by joining the front baffle 10 and the back baffle 50 having a quadrangular front view shape so as to be removable from each other so as to overlap each other. Has been done.

As shown in FIGS. 10 to 13, the front baffle 10 includes a frame-shaped portion 11 having a quadrangular front view shape and a plurality of gutter-shaped filter plates 12. The plurality of filter plates 12 are arranged so as to be parallel to each other with a gap S1 equal to the inner peripheral region of the frame-shaped portion 11 in a state where the concave surface portion 12b is directed in the same direction (back surface side).

The upper edge portion 11b and the lower edge portion 11c of the frame-shaped portion 11 have an L-shaped cross section, and each of the flat plate portions 11p faces the front surface 11a side of the frame-shaped portion 11. A plurality of through holes 11e are provided at equal intervals along the square edge portion 11d of the upper edge portion 11b and the lower edge portion 11c. Further, a plurality of through holes 11f are provided in both sides of the upper surface portion 11q of the upper edge portion 11b and in both sides of the lower surface portion 11r (see FIG. 13) of the lower edge portion 11c. Further, a pair of left and right handles 55 and 55 of the back baffle 50 shown in FIG. 10 are located at the central portions in the height direction of the flat plate portions 11t and 11t in front of the left and right side edge portions 11s and 11s of the frame-shaped portion 11, respectively. Rectangular openings 11u and 11u that can be inserted are opened.

As shown in FIG. 13, the cross sections of the plurality of filter plates 12 forming the front baffle 10 each have a divergent half-octagonal shape, and the front portion 12a forms substantially the same plane as the front surface 11a of the frame-shaped portion 11. .. The partition walls 12c and 12c are extended so as to widen from both sides of the front surface portion 12a of the filter plate 12 toward the back surface side, respectively, and are smaller than the angle formed by the partition wall portions 12c and 12c on the back surface side of the partition wall portions 12c and 12c. The protruding edges 12d and 12d are extended so as to widen at an angle. The cross section of the filter plate 12 is mirror-symmetrical with the center line 12wc of the concave surface portion 12b of the filter plate 12 in the width direction of 12w interposed therebetween. Since the cross-sectional shape of the filter plate 12 is not limited to the divergent half-octagonal shape, it can be a curved shape such as a semicircular shape or an arc shape.

As shown in FIGS. 10 and 14 to 16, the back baffle 50 includes a frame-shaped portion 51 having a quadrangular front view shape, a plurality of filter plates 52 having a gutter shape, and a pair of left and right handles 55. , 55 and. The plurality of filter plates 52 are arranged so as to be parallel to each other with a gap S2 equal to the inner peripheral region of the frame-shaped portion 51 in a state where the concave surface portion 52b is directed in the same direction (front side).

The upper edge portion 51b and the lower edge portion 51c of the frame-shaped portion 51 have an L-shaped cross section, and each of the flat plate portions 51p faces the back surface 51d side of the frame-shaped portion 51. A plurality of through holes 51f are provided in a portion closer to both sides of the upper surface portion 51q (see FIG. 10) of the upper edge portion 51b and a portion closer to both sides of the lower surface portion 51r (see FIG. 10) of the lower edge portion 51c. Further, handles 55 and 55 are attached to the central portions of the front flat plate portions 51t and 51t of the left and right side edge portions 51s and 51s of the frame-shaped portion 51 in the height direction, respectively.

As shown in FIG. 16, the filter plate 52 forming the back baffle 50 is extended to the left and right from both sides of the flat plate-shaped front portion 52c having the protruding portion 52a protruding in the front direction and the front portion 52c, respectively. The front surface portion 52c, the partition wall portions 52d and 52d extending from both sides of the front surface portion 52c toward the front side, and the partition wall portions 52d and 52d so as to narrow the width toward the front side, respectively. The protrusions 52e and 52e, which are extended to the above, are provided.

The protruding portion 52a is formed along the center line 52wc of the concave surface portion 52b of the filter plate 52 in the width direction 52w, and protrudes toward the front baffle 10. The cross-sectional shape of the projecting portion 52a is a chevron shape, and the top portion 52f thereof forms a right angle. The cross-sectional shape of the projecting portion 52a is mirror-symmetrical with the center line 52wc of the concave surface portion 52b of the filter plate 52 in the width direction 52w interposed therebetween.

As shown in FIG. 10, when the back side of the front baffle 10 and the front side of the back baffle 50 are opposed to each other and overlapped with each other, the frame-shaped portion 51 of the back baffle 50 is inside the frame-shaped portion 11 of the front baffle 10. The grease filter 100 shown in FIG. 1 is formed by joining them in an inscribed state so as to be detachably joined.

The flat plate portion of the frame-shaped portion 51 of the back baffle 50 overlaps with the left and right flat plate portions 11t and 11t of the frame-shaped portion 11 of the front baffle 10 and the left and right flat plate portions 51t and 51t of the frame-shaped portion 51 of the back baffle 50. It is provided with a handle 55 that penetrates the flat plate portion 11t of the frame-shaped portion 11 of the front baffle 10 from 51t and projects to the front side of the front baffle 10.

In the process of joining the front baffle 10 and the back baffle 50, the U-shaped main bodies 55a and 55a of the handles 55 and 55 protruding from the left and right flat plate portions 51t and 51t of the back baffle 50 are left and right of the front baffle 10. The openings 11u and 11u are penetrated from the back surface side to the front surface side, and after joining, they are in a state of protruding from the left and right flat plate portions 11t and 11t of the front baffle 10 as shown in FIG.

The arrangement interval of the plurality of filter plates 12 constituting the front baffle 10 and the arrangement interval of the plurality of filter plates 52 constituting the back baffle 50 are the same, but the arrangement phase is shifted by one filter plate. Therefore, when the front baffle 10 and the back baffle 50 are joined as shown in FIG. 1, the filter plate 12 of the front baffle 10 and the baffle plate 52 of the back baffle 50 are mutually as shown in FIGS. 4 and 5. In parallel with each other, a part of the concave surface portion 12b of the filter plate 12 and a part of the concave surface portion 52b of the filter plate 52 are in a state of facing each other.

Specifically, when the front baffle 10 and the back baffle 50 are joined, as shown in FIG. 5, the central portion in the width direction of the gap S1 of the filter plate 12 of the front baffle 10 and the filter plate 52 of the back baffle 50. The top portion 52f of the protruding portion 52a faces the top 52f, and the gap S2 of the filter plate 52 of the back baffle 50 and the concave portion 12b side of the front portion 12a of the front baffle 10 face each other. Further, as shown in FIG. 5, the top portion 52f of the protruding portion 52a is located closer to the back baffle 50 (back side) than the front portion 12a of the filter plate 12 of the front baffle 10.

Next, the functions, effects, and the like of the grease filters 100 shown in FIGS. 1 to 3 will be described with reference to FIGS. 4 to 7. The grease filter 100 is used by arranging it at the exhaust gas suction port in the exhaust hood installed above the cooking range in order to collect and collect the oil and fat contained in the oil smoke in the exhaust gas generated during cooking. To. As shown in FIGS. 1, 4, 6, and 7, the exhaust gas generated during cooking flows in from the front baffle 10 side of the grease filter 100 along the direction indicated by the arrow G, and the grease filter 100 is generated. It flows inside and flows out from the back baffle 50 side.

Specifically, as shown in FIGS. 4 to 6, the exhaust gas flowing along the arrow G flows into the gap S1 of the filter plate 12 of the front baffle 10, and the protruding portion of the filter plate 52 of the back baffle 50. After contacting the top 52f of 52a, it is divided into two directions, passes through the gap S3 of the facing portion between the filter plate 12 and the filter plate 52, flows into the concave portion 12b side of the front baffle 10, and flows from the opposite direction. By contacting and merging with the exhaust gas, the flow directions of each other change, and the gas flows out through the gap S2 of the filter plate 52 of the back baffle 50.

As shown in FIG. 6, the exhaust gas that has come into contact with the top portion 52f of the protruding portion 52a of the filter plate 52 of the back baffle 50 and has been diverted in two directions is the slope portion, the front portion 12c, and the partition wall portion of the protruding portion 52a. Since the 52d and the ridge portion 52e are sequentially and continuously contacted and flow while increasing the flow velocity, the chance of contact with the concave surface portion 52b of the filter plate 52 increases, and the oil and fat removal rate in the oil smoke contained in the exhaust gas increases. Can be enhanced.

That is, as shown in FIG. 6, the exhaust gas flowing from the gap S1 of the filter plate 12 of the front baffle 10 of the grease filter 100 toward the concave surface portion 52b of the filter plate 52 of the back baffle 50 is the top of the protruding portion 52a. By contacting the 52f, it is divided into two directions and flows along a wide range of the concave surface portion 52b of the filter plate 52 without going against the flow path, so that it can be seen that there are many opportunities for contact with the filter plate 52.

Further, the exhaust gas flowing from the gap S1 of the filter plate 12 of the front baffle 10 toward the concave surface portion 52b of the filter plate 52 of the back baffle 50 contacts the top portion 52f of the protruding portion 52a and then is divided into two directions. , Flows along the concave surface portion 52b of the filter plate 52 of the back baffle 50 without going against the flow path. Therefore, as shown in FIG. 7, the high pressure region is located near the front surface of the top portion 52f of the projecting portion 52a (region indicated by reference numeral X1) and near the foot of the projecting portion 52f (region indicated by reference numeral X2). It will be limited to a relatively narrow range, resulting in reduced pressure loss and noise. The unit of the numerical value shown in FIG. 7 is Pa.

Next, with reference to FIGS. 8 and 9, the flow state and pressure distribution state of the exhaust gas in the conventional grease filter will be described. FIG. 8 is a diagram showing a flow state of the exhaust gas passing through the conventional grease filter, and FIG. 9 is a diagram showing a pressure distribution state of the exhaust gas passing through the conventional grease filter. The unit of the numerical value shown in FIG. 9 is Pa.

As shown in FIG. 8, in the conventional grease filter, the exhaust gas flowing from the gap S1 of the filter plate 62 of the front baffle toward the concave portion 72b of the filter plate 72 of the back baffle is more than the flat plate-shaped front portion 72a. It can be seen that in the portion separated from the front side, the flow is divided into two directions, so that there is little chance of contact with the front portion 72a of the filter plate 72, and the oil / fat removal rate in the oil smoke contained in the exhaust gas is low. ..

Further, in the conventional grease filter, the exhaust gas flowing from the gap S1 of the filter plate 62 of the front baffle toward the concave surface portion 72b of the filter plate 72 of the back baffle is separated from the flat plate-shaped front portion 72a to the front side. The part is divided into two directions. Therefore, as shown in FIG. 9, the pressure becomes high in a relatively wide range (a region wider than the regions indicated by the reference numerals X1 and X2 shown in FIG. 7) in the vicinity of the front surface (the region indicated by the reference numeral Y) of the front portion 72a. Compared to the grease filter 100 of the present embodiment, the conventional grease filter has a high pressure loss and a large noise.

Next, the handle 55 of the back baffle 50 will be described with reference to FIG. As shown in FIG. 17A, the handle 55 includes a U-shaped main body portion 55a and hook portions 55b and 55b formed at both ends thereof. The hook portions 55b and 55b have a shape that is bent at a right angle to the outside of the U-shape from both end portions of the main body portion 55a, and are formed by hat bending.

Further, a pair in which the boundary portion between the main body portion 55a and the hook portion 55b of the handle 55 and the hook portion 55b can be inserted into the region straddling the flat plate portion 51t and the side surface portion 51g of the side edge portion 51s of the frame-shaped portion 51 of the back baffle 50. Slit-shaped openings 56, 56 are opened.

As shown in FIG. 17A, the portions of the handle 55 near the hook portions 55b and 55b are brought closer to the openings 56 and 56 from the side surface portions 51g of the side edge portions 51s, respectively, and as shown in FIG. 17B. When the portions of the handle 55 near the hook portions 55b and 55b are inserted into the openings 56 and 56, respectively, the handle 55 is attached to the side edge portion 51s.

After that, when the main body portion 55a of the handle 55 is pressed toward the flat plate portion 51t of the side edge portion 51s, the handle 55 is housed in the side edge portion 51s as shown in FIG. 17 (c). Further, if the main body portion 55a of the stored handle 55 is pulled, the handle 55 returns to the state shown in FIG. 17 (b).

As shown in FIG. 17C, if the handle 55 is housed in the side edge portion 51 of the frame-shaped portion 51 of the back baffle 50, the number of members protruding from the frame-shaped portion 51 can be reduced, so that the members can be transported during storage. It is possible to save space inside.

Further, the handle 55 has a U-shaped main body portion 55a and hook portions 55b and 55b at both ends thereof, and the handle 55 is provided in a plurality of openings 56 and 56 provided in the frame-shaped portion 51 of the back baffle 50. The hook portions 55a and 55a sides of the above are inserted so as to be able to advance and retreat, respectively.

Therefore, the step of fixing the handle to the frame-shaped portion by spot welding, which has been carried out in the conventional grease filter manufacturing process, becomes unnecessary, and the man-hours can be reduced. Since the shapes of the hook portions 55b and 55b of the handle 55 are not limited, in addition to the hat bending that bends both ends of the U-shaped portion outward, a C-shaped bending that bends both ends of the U-shaped portion inward is adopted. You can also do it.

Next, other embodiments relating to the filter plate of the back baffle will be described with reference to FIGS. 18 and 19. The filter plate 12 of the front baffle shown in FIGS. 18 and 19 is the same as the filter plate 12 shown in FIG.

The filter plate 1 shown in FIG. 18A has a protruding portion 1a protruding in the front direction at the same position as the protruding portion 52a of the filter plate 52 shown in FIG. The cross-sectional shape of the projecting portion 1a is a chevron shape, but the angle of the top portion 1b is an acute angle chevron smaller than the projecting portion 52a of the filter plate 52. Further, the top portion 1b of the protruding portion 1a is located closer to the front than the boundary between the partition wall portion 12c and the protruding edge portion 12d of the filter plate 12.

The filter plate 2 shown in FIG. 18B has a protruding portion 2a protruding in the front direction at the same position as the protruding portion 52a of the filter plate 52 shown in FIG. The cross-sectional shape of the projecting portion 2a is a semi-hexagonal shape, and the top portion 2b thereof is located closer to the front than the boundary between the partition wall portion 12c and the projecting edge portion 12d of the filter plate 12.

The filter plate 3 shown in FIG. 18C has a protruding portion 3a protruding in the front direction at the same position as the protruding portion 52a of the filter plate 52 shown in FIG. The cross-sectional shape of the projecting portion 3a is semi-circular, and the top portion 3b thereof is located closer to the back surface than the side edge portion of the projecting edge portion 12d of the filter plate 12.

The filter plate 4 shown in FIG. 19A has a protruding portion 4a protruding in the front direction at the same position as the protruding portion 52a of the filter plate 52 shown in FIG. The cross-sectional shape of the protruding portion 4a is a curved wedge shape, and the top portion 4b thereof is located closer to the front than the boundary portion between the partition wall portion 12c and the protruding edge portion 12d of the filter plate 12. Further, the skirt portions 4c and 4c of the protruding portion 4a each form a smooth concave curved surface.

The filter plate 5 shown in FIG. 19B has a protruding portion 5a protruding in the front direction at the same position as the protruding portion 52a of the filter plate 52 shown in FIG. The cross-sectional shape of the protruding portion 5a is a flat plate shape, and the top portion 5b thereof is located closer to the front than the boundary portion between the partition wall portion 12c and the protruding edge portion 12d of the filter plate 12.

The filter plate 6 shown in FIG. 19C has a protruding portion 6a protruding in the front direction at the same position as the protruding portion 52a of the filter plate 52 shown in FIG. The protruding portion 6a includes a chevron portion 6b protruding in the front direction from the front portion 6e of the filter plate 6, and a flat plate-shaped portion 6c protruding in the front direction from the top 6d of the chevron portion 6b. The top 6f of the protruding portion 6a is located closer to the front than the boundary portion between the partition wall portion 12c and the protruding edge portion 12d of the filter plate 12.

By providing the protruding portions 1a, 2a, 3a shown in FIGS. 18 (a) to 18 (c) and the protruding portions 4a, 5a, 6a shown in FIGS. , 2a, 3a, 4a, 5a, 6a are more likely to come into contact with each other, which is effective in improving the oil / fat removal rate.

The grease filter 100 described with reference to FIGS. 1 to 17 and the filter plates 1, 2, 3, 4, 5, and 6 described with reference to FIGS. 18 and 19 constitute the grease filter of the present invention and the same. The grease filter of the present invention and the filter plate constituting the grease filter of the present invention are not limited to the above-mentioned grease filter 100 and the filter plates 1, 2, 3, 4, 5, and 6.

The grease filter according to the present invention can be widely used as a component of exhaust equipment such as a kitchen of a restaurant or a hotel.

1,2,3,4,5,6 Filter plate 1a, 2a, 3a, 4a, 5a, 6a, 52a Protruding part 1b, 2b, 3b, 4b, 5b, 6d, 6f, 52f Top 4c Bottom part 6b Yamagata part 6c Flat plate part
6e, 12a, 52c, 72a Front part 10 Front baffle 11,51 Frame-shaped part 11a Front 11b, 51b Upper edge part 11c, 51c Lower edge part 11d Square edge part 11e, 11f, 51f Through hole 11p, 11t, 51p Flat plate part 11q, 51q Top surface 11r, 51r Bottom surface 11s, 51s Side edge 11t, 51t Flat plate 11u, 56 Opening 12, 52 Filter plate 12b, 52b Concave surface 12c, 52d Partition wall 12d, 52e Protrusion 12w, 52w Width direction 12wc, 52wc Center line 50 Back baffle 51d Back side 51g Side part 55 Handle 55a Main body part 55b Hook part S1, S2, S3 Gap

Claims (5)

A front baffle and a back baffle in which a plurality of gutter-shaped filter plates are arranged in parallel across a gap with their concave portions facing in the same direction in the inner peripheral region of the frame-shaped portion.
In a grease filter arranged so that the filter plates constituting the front baffle and the back baffle are parallel to each other and a part of the concave surface portion of the filter plate faces each other so as to be removable.
A protruding portion protruding toward the front baffle is provided at the center of the concave portion of the filter plate of the back baffle in the width direction .
A handle that penetrates the frame-shaped portion of the front baffle from the frame-shaped portion of the back baffle and projects to the front of the front baffle is provided in the region where the frame-shaped portion of the front baffle and the frame-shaped portion of the back baffle overlap. , A grease filter in which the handle can be stored in the frame-shaped portion of the back baffle . The grease filter according to claim 1, wherein the top of the protruding portion is located closer to the back baffle than the front surface of the filter plate of the front baffle. The grease filter according to claim 1 or 2, wherein the cross-sectional shape of the protruding portion is mirror-symmetrical with the center line in the width direction of the concave portion of the filter plate interposed therebetween. The item according to any one of claims 1 to 3, wherein the cross-sectional shape of the protruding portion includes any one or more of a chevron, an acute angle chevron, a semicircle, a semi-elliptical shape, a curved wedge shape, a semi-polygon shape, and a flat plate shape. The described grease filter. The handle has a U-shaped main body portion and hook portions formed at both ends thereof, and the hook portion side of the handle advances and retreats to a plurality of openings opened in the frame-shaped portion of the back baffle. The grease filter according to any one of claims 1 to 4, which is optionally inserted.

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