JP5542606B2 - Range food - Google Patents

Description

  The present invention relates to a range hood that sucks and collects contaminated air (contaminant) generated during cooking and returns it to the room (kitchen) after exhausting the exhaust air or cleaning the contaminated air outdoors, and is particularly included in the contaminated air. The present invention relates to a range hood provided with a filter cleaning device that cleans a filter member that separates and collects dirt such as oil and fat and dust.

  The range hood is provided with a suction port (capture space) that is opened downward to suck in and collect polluted air such as waste gas and oil smoke that rises from a cooking device or cooking pan during cooking. Yes. In addition, the polluted air sucked and collected from the suction port is separated and collected (captured) from the contaminated air in the internal exhaust air passage leading to the discharge port that exhausts the air through the exhaust duct to the outside. ) Is provided.

  In recent years, the filter member cleaning work regularly performed by the user has been reduced, that is, the stubborn oil and fat components that have been separated and collected from the contaminated air and adhered to the surface of the filter member and the like. In order to reduce cumbersome and time-consuming cleaning work, such as removing etc., a range hood with a filter cleaning device that removes deposits such as oil and fat from the filter member by mechanical movement is proposed (See, for example, Patent Document 1)

Japanese Patent Laying-Open No. 2006-292248 (see paragraph number 0026 and FIG. 1)

  However, in the prior art described in Patent Document 1, since a configuration in which dirt attached to the filter member is removed by a brush (dirt wiping means) that moves while in contact with the surface of the filter member is employed, The removed dirt enters between the flocked fibers of the brush. In particular, the removed oil and fat may enter and solidify between the flocked fibers, and as a result, the original wiping action of the brush for removing dirt from the surface of the filter member, so-called cleaning function, may be reduced.

In the prior art, oil and fat gradually accumulates between the flocked fibers with use, and in the worst case, the brush itself is such that the flocked fibers are bonded by the oil and fat that has entered between the flocked fibers. Causes clogging.
Therefore, it is necessary not only to remove the brush itself periodically to remove dirt such as oil and fat that has entered between flocked fibers, but also to be able to remove it and replace it with a new one. There was a problem in handling such as inviting.

  Therefore, the present applicant solves the problems of Patent Document 1, makes it possible to continuously use for a long time without deteriorating the cleaning function, and greatly reduces maintenance for the user. Has previously proposed a range hood equipped with a filter cleaning device (see Japanese Patent Application No. 2010-104594).

By the way, the filter member applied to the filter cleaning device previously proposed by the applicant of the present invention is a planar opening point of innumerable ventilation holes leading to both sides of the filter facing the exhaust upstream side and the exhaust downstream side of the exhaust air passage. This is a so-called punching metal filter.
On the other hand, an adhering substance removing member that is separated and recovered from contaminated air and removes dirt such as oil and fat and dust adhering to the filter surface is pressed flat against the filter surface with an appropriate non-combustible material. It is formed in a substantially flat plate shape.

  For this reason, in the range hood provided with the filter cleaning device previously proposed by the applicant, the filter member is driven and rotated after cooking to remove dirt such as oil and fat and dust from the filter surface. In the process of being scraped off from the filter surface by the adhering material removing member, especially when the oil and fat are opened in a plane and flow into the inside of the scattered air holes, the oil and fat are removed and the oil and fat are completely removed. It cannot be removed. In addition, there is still room for improvement, such as the possibility of forming an oil / fat oil film so as to close the vent hole.

  Therefore, the present invention pays attention to such a problem to be improved, and a range hood provided with a filter cleaning device configured to remove dirt such as fats and oils and dust by pressing the deposit removing member along the filter surface. Therefore, it is possible to clean the filter reliably and efficiently without removing dirt, and to improve the capture and collection rate (collection and recovery rate) of dirt from contaminated air. The purpose is to provide a ventilation structure.

In order to solve the above-mentioned problem, in the present invention, the filter member can be rotated to an exhaust air passage that leads from a suction port that sucks and collects contaminated air during cooking to a discharge port that exhausts the contaminated air outdoors or returns it indoors. The filter cleaning device includes a driving means for driving and rotating the filter member formed in a disk shape, and a pressure member along the filter surface of the filter member to remove attached matter. A range hood comprising kimono removing means,
The filter member is provided with a ventilation portion of the contaminated air intermittently or continuously along a rotation circumferential line centering on a rotation center portion, and the ventilation portion is the rotation circumference line or a tangent line thereof. And an air collision surface portion provided in a convex shape from the filter surface of the filter member, and a passage provided between the air collision surface portion and the two cutting edges. Formed from pores,
The adhering matter removing means includes an adhering matter removing member that press-contacts along the uneven surface formed by the filter surface and the air collision surface portion when the filter member rotates.

  Here, the air collision surface portion is formed in a convex shape toward the exhaust downstream side of the exhaust air passage, and the deposit removal means moves the deposit removal member from the exhaust upstream side with respect to the filter member. It is arranged at the position to be pressed, and the convex width of the air collision surface portion is a rotation circumferential line centering on the rotation center portion of the filter member or two that are cut substantially parallel to the tangent line. It is preferable to adopt a configuration such as being narrower than the cut interval of the cut edges.

Further, the ventilation portion is provided along each of the plurality of rotation circumferential lines centering on the rotation center portion of the filter member, and the deposit removing member intersects each of the plurality of rotation circumferential lines. Preferably, the filter member is formed so as to be elastically deformed in accordance with the uneven surface when the filter member is rotated.
As a structural form for elastically deforming the press contact edge that is pressed along the radial uneven surface of the filter member, for example, in a state where the press contact edge is pressed against the filter surface by a desired pressing force, Only the pressure contact edge side of the deposit removing member or the entire deposit removing member is formed by using a non-combustible rubber material or the like that is soft enough to be elastically deformed into a bumpy shape in accordance with the bumpy surface. In addition, the cut edge can be cut at fine intervals in the length direction at the desired depth of cut on the pressure contact edge of the deposit removing member formed using a non-combustible rubber material having appropriate elasticity. For example, among the convex and concave surfaces, the detail piece portion pressed against the convex surface greatly elastically deforms according to the convex shape and height of the convex surface. Examples of the structure are as follows.

  Moreover, as another structural form, the said pressure contact edge part side press-contacted along the said uneven surface is divided | segmented into the block shape which made it independent in the longitudinal direction according to the convex width etc. of the said air collision surface part ( And split each part using a coiled spring material, etc., and dent (retreat) in accordance with the convex height of the convex part at the part that is pressed against the convex part. Examples of the structure form are as follows.

Further, the ventilation portion is provided along each of the plurality of rotation circumferential lines centering on the rotation center portion of the filter member, and the deposit removing member intersects each of the plurality of rotation circumferential lines. The pressure contact edge portion that is disposed so as to be in contact with the uneven surface when the filter member is rotated includes a convex portion or a concave portion at a position intersecting with each of the rotation circumferential lines. It is characterized by having a recess or a protrusion at a position where it is not. In this case, it is preferable that one or both of the convex portion and the concave portion are formed so as to be elastically deformed according to the concave and convex surface when the filter member is rotated. It is preferable that a cut is provided at the boundary between the recess and the both are separated.
Further, it is preferable that the filter member is subjected to a hydrophilic or water-repellent surface treatment.

According to such a configuration, dirt (fouling matter) such as oil and fat separated and collected from contaminated air and adhering to the filter member is caused by an air collision between the filter surface of the rotating filter member and the ventilation portion. It is removed from the air collision surface portion of the filter surface and the ventilation portion so as to be scraped off by the deposit removing member of the deposit removing means that is press-contacted along the uneven surface having a step with the surface portion.
At this time, the pressure contact edge portion of the deposit removing member that is in pressure contact with the filter surface is elastically deformed according to the uneven surface of the filter surface and the air collision surface portion, and the pressure contact state with respect to the filter surface and the air collision surface portion is maintained. Cleaning of the filter member that removes dirt adhering to the filter surface and the air collision surface portion is performed.

Moreover, the press-contacting edge part of the deposit removing member includes a convex part and a concave part that match the concave and convex surface formed by the filter surface and the air collision surface part of the ventilation part. Specifically, a convex portion or a concave portion is provided at a position that intersects each of the plurality of rotation circumferential lines centering on the rotation center portion of the filter member in which the ventilation portion is formed, and a concave portion or a convex portion is provided at a position that does not intersect. By adopting a configuration that is formed in a concavo-convex shape, when the filter member rotates, the pressure contact state of the pressure contact edge with respect to the filter surface and the air collision surface portion is more reliably maintained, and adheres to the filter surface and the air collision surface portion. Cleaning of the filter member that reliably and efficiently removes dirt is performed.
For example, the air collision surface portion is formed in a convex shape from the filter surface facing the exhaust upstream side of the exhaust air passage (the filter surface on which the deposit removing means is disposed) toward the exhaust downstream side. In other words, when viewed from the filter surface side facing the exhaust upstream side of the exhaust air passage, the air collision surface portion formed in a concave shape from the filter surface toward the exhaust downstream side, and a convex / concave surface consisting of the filter surface The filter surface is provided with a convex portion at a position where the pressure contact edge portion of the deposit removing member that is pressure-contacted along the concave and convex surface is pressed against the concave air collision surface portion (a position intersecting with each of the rotation circumferential lines). It is set as the convex-concave edge structure provided with the recessed part in the position (position which does not cross | intersect said each rotation circumference line) to press-contact to.
Thus, when the filter member is rotated, the convex portion of the pressure contact edge is pressed against the concave air collision surface portion and the concave portion is pressed against the filter surface in an appropriate state, so that the filter surface and the air collision surface portion are contaminated. The filter member to be removed is cleaned well.

  Further, when the convex portion of the press contact edge portion is formed so as to be elastically deformed according to the concave and convex surface along the rotation circumferential line of the filter member, and the ventilation portion is intermittently disposed on the rotation circumferential line. The convex portion is maintained in pressure contact with the air collision surface portion and the filter surface of the ventilation portion existing on the rotation circumference under elastic deformation, and the filter member is cleaned to remove dirt from the filter surface and the air collision surface portion. Is done.

In addition, when a convex configuration in which the air collision surface portion of the ventilation portion is directed toward the exhaust downstream side of the exhaust air passage as described above is employed, the air collision surface portion and the rotation circumferential line of the filter member or a tangent line thereof are substantially parallel. By adopting a structure in which a vent hole through which contaminated air passes is provided between the two cutting edges cut into the air, the contaminated air during cooking passes through the filter member from the exhaust upstream side of the exhaust air passage. When passing through the exhaust air downstream side of the exhaust air passage, the contaminated air collides (contacts) with the air collision surface portion, and opens to the side (filter surface direction perpendicular to the direction in which the contaminated air passes). Moves to the exhaust downstream side while greatly changing the direction.
Thereby, dirt such as oil and fat and dust in the contaminated air is separated and recovered by collision with the air collision surface portion. That is, the dirt can be separated and collected from the contaminated air by maximizing the principle of collecting the dirt performed by adhering to the filter member due to the collision with the air collision surface when the contaminated air passes through the filter member. .

On the other hand, the air collision surface portion is formed in a convex shape from the filter surface facing the exhaust downstream side of the exhaust air passage toward the exhaust upstream side with respect to the uneven edge structure of the pressure contact edge portion of the deposit removing member. . That is, when viewed from the filter surface facing the exhaust upstream side of the exhaust air passage (the filter surface on which the deposit removing means is disposed), it is formed in a convex shape from the filter surface toward the exhaust upstream side. In the case of a concave / convex surface consisting of an air collision surface portion and a filter surface, the position where the pressure contact edge portion of the deposit removing member that is press-contacted along the concave / convex surface is pressed against the convex air collision surface portion (the rotations described above) A concave-convex edge structure is provided in which a concave portion is provided at a position that intersects the circumferential line and a convex portion is provided at a position that is pressed against the filter surface (a position that does not intersect each of the rotating circumferential lines).
Accordingly, when the filter member is rotated, the concave portion of the pressure contact edge is pressed against the convex air collision surface portion and the convex portion is pressed against the filter surface in an appropriate state, so that the filter surface and the air collision surface portion are contaminated. The filter member that removes the water is satisfactorily cleaned.
In this case, by adopting a configuration in which the concave portion and the convex portion of the pressure contact edge portion are formed so as to be elastically deformable, and a cut is formed at the boundary between the concave portion and the convex portion, for example, the ventilation portion is provided. When it is intermittently arranged on the rotating circumference, the convex part is pressed against the filter surface of the filter member in an elastically deformed state, and the concave part adheres to the filter surface existing on the rotating circumferential line. A removal member is installed in the filter removal device. During the rotation of the filter member, when the pressure contact of the concave portion moves from the filter surface on the rotation circumference to the convex air collision surface portion, the concave portion is elastically deformed so that the pressure contact state with respect to the convex ventilation collision surface portion is maintained. Be drunk. At this time, since the convex portion is separated from the concave portion by the cut provided at the boundary with the concave portion, the pressure contact state with respect to the filter surface is maintained without being greatly influenced by the elastic deformation of the concave portion. Thereby, cleaning of the filter member which removes dirt from the filter surface and the air collision surface portion accurately is performed.

  The vent hole through which the contaminated air passes during cooking is opened in a direction perpendicular to the filter surface and the air collision surface portion to which the dirt adheres, so that the filter surface and the air collision are caused by the deposit removing member. In the process of scraping off the dirt from the surface portion, the filter member can be cleaned without removing the dirt to the inside of the hole edge of the vent hole and without blocking the vent hole by the generation of the oil film.

In addition, a vent structure having a configuration in which the convex width of the air collision surface portion is formed narrower than the incision interval between two incision edges that are substantially parallel to the rotation circumferential line of the filter member or its tangent line. By adopting, in the process of scraping off dirt from the filter surface and the air collision surface portion by the deposit removing member, it is possible to more reliably prevent the generation of an oil film that closes the vent hole.
That is, the air hole formed between the convex width edge of the air collision surface portion existing on the inner side of the two cut edges (on the edge extension line) and the two cut edges has one plane ( Instead of a flat surface that is flush with the filter surface, a substantially L-shaped opening shape is obtained in a cross-sectional view by two planes, that is, this one plane and a vertical plane in the convex direction of the air collision surface portion. As a result, the oil / fat film is less likely to be in a stable state as compared with the case of the vent hole formed by one plane, and therefore, the generation of the oil / fat film that blocks the vent hole can be suppressed.

  In addition, since the filter member is subjected to a hydrophilic or water-repellent surface treatment, accumulation of dirt and the like can be prevented and dirt can be easily removed. Can be removed.

According to the range hood provided with the filter cleaning device of the present invention, in the process of removing dirt such as oil and fat and dust from the drive rotating filter member so as to scrape off, without removing dirt inside the hole edge of the vent hole, Moreover, it is possible to perform cleaning of the filter member that removes dirt from the filter surface on which the filter member that rotates and rotates and the air collision surface portion do not block the vent hole due to the generation of the oil film.
In addition, the dirt adhering to the uneven surface formed by the filter surface and the air collision surface portion of the ventilation portion can be reliably deformed by the elastic contact or the pressure contact edge portion of the attached matter removing member having the convex portion and the concave portion, and Can be removed efficiently.
Thereby, since it becomes possible to use for a long time without deteriorating the cleaning function, it is possible to reduce the troubles such as maintenance for the user.

Further, according to the range hood provided with the filter cleaning device of the present invention, when contaminated air during cooking passes through the filter member from the exhaust upstream side of the exhaust air passage and passes through the exhaust downstream side, the contaminated air flows through the ventilation portion. While colliding with (contacting with) the air collision surface portion, the air exits to the exhaust downstream side while greatly changing the direction in the direction of the vent hole that opens toward the side (filter surface direction).
Thereby, the separation / recovery rate (capture or collection / recovery rate) of dirt such as oil and fat or dust due to collision of exhaust air can be improved.

It is a vertical side view which shows the range hood which concerns on this embodiment to which the filter cleaning apparatus was applied. It is sectional drawing which expands and shows the principal part (filter cleaning apparatus) of the same range hood. A filter member is shown, (a) is a perspective view when the exhaust upstream side is seen, (b) is a structure explanatory drawing. It is sectional drawing which expands and shows a part of ventilation part of the filter member, (a) is sectional drawing of a rotation circumferential direction, (b) is sectional drawing of radial direction. It is explanatory drawing which shows the flow of the exhaust air when passing the same filter member. It is a disassembled perspective view of the filter cleaning apparatus which concerns on this embodiment. It is a disassembled perspective view of the filter cleaning apparatus which shows the continuation of FIG. It is a disassembled perspective view which shows a deposit | attachment removal means. It is explanatory drawing which shows the press-contact state to the filter member of the deposit | attachment removal member at the time of cleaning of a filter member, (a) is the air collision surface part of the ventilation part of the convex part of an deposit | attachment removal member with the drive rotation of a filter member And (b) shows a state where the convex part is in pressure contact with the filter surface together with the concave part. It is a perspective view when other embodiment of a filter member is shown and it sees from the exhaust-gas downstream side. It is sectional drawing which expands and shows a part of ventilation part of the filter member, (a) is sectional drawing of a rotation circumferential direction, (b) is sectional drawing of radial direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a longitudinal sectional view showing a range hood according to this embodiment, and FIGS. 2 and 3 are sectional views showing an enlarged main part.
The range hood is roughly classified into two types, a thin type (flat type) in which the capture space is formed shallow and a deep type in which the capture space is formed deeply. As shown in FIG. 1, a thin type range hood will be described. In addition, in the thin type range hood, there are a vertical installation type in which the blower is installed vertically on the hood portion and a horizontal installation type in which the blower is installed horizontally. In the present embodiment, FIG. As shown in Fig. 4, a horizontal type range hood will be described.

≪Description of range hood≫
As is well known, the range hood A sucks and collects polluted air G such as oil smoke, steam (steam), hot air, and waste gas generated during cooking, and exhausts it outdoors through an exhaust duct (not shown), or It is configured to be separated and removed by a filtering device including various filters such as a deodorizing filter (not shown) disposed on the exhaust downstream side of the exhaust air passage 10 and then returned to the room as clean air. .
As shown in FIG. 1, the range hood A is a thin (flat) hood portion 1 having a capture space M that opens downward, a blower 2 installed on the hood portion 1, and a capture space M. And a current plate 3 attached to the downward opening.

  In this way, the thin range hood A in which the blower 2 is installed on the hood portion 1 is installed and installed in the kitchen by a known installation structure. For example, as shown in FIG. 1, a blower box 2a, which will be described later of the blower 2, is attached to a kitchen wall K by screwing or the like using an L-shaped hanging bracket 4, and is directly above a heating cooker (not shown). Located in place.

The hood portion 1 is formed in a flat box shape that opens downward, and the oil panel 5 is attached to the inside of the opening, so that a downward recessed trapping space M having a desired depth is provided inside the opening. Yes.
The oil panel 5 is provided with a dent bulging upward leaving the peripheral edge, and the peripheral edge is formed to be attached to the inner side of the opening of the hood portion 1 by using a fixing means such as spot welding or screwing. Has been.
Thus, the depth is within the thickness (height) of the hood part 1 and is located on the kitchen side (left side of FIG. 1 paper) from the back side (right side of FIG. 1 paper) of the hood part 1 butted against the kitchen wall K. A capture space M whose depth gradually increases toward the front side of the hood portion 1 is formed inside the opening of the hood portion 1.

  Further, the hood unit 1 is provided with a blower installation unit 6 communicated with the capture space M at a part of the top plate 1a located on the back side where the blower 2 is installed, higher than the top plate 1a. A space in which the motor 16a of the driving means 16 constituting the cleaning device B can be installed is secured between the capture space M and the blower box 2a. That is, as shown in FIG. 1, a filter cleaning device B that communicates with the capture space M and is attached to the oil panel 5 can be incorporated in the hood portion 1.

As shown in FIG. 1, the blower 2 has a fan casing 2 b installed in a horizontally placed state inside a blower box 2 a formed in a substantially square box shape with an open bottom surface.
The fan casing 2b is formed in a volute shape having a discharge port 7 to which an exhaust duct is connected, and accommodates an exhaust fan 2d that is pivotally supported by the fan motor 2c and accommodated coaxially.

  The rectifying plate 3 is formed in a flat plate shape that is smaller than the opening shape of the downward opening of the capture space M, and is attached to the capture space M so that it can be opened / closed / detached. As a result, as shown in FIG. 1, the intake port 8 for the contaminated air G is secured between the peripheral edges of the current plate 3 and the opening peripheral edge of the capture space M, so that the contaminated air G flows into the current plate 3. The air is sucked (collected) vigorously into the capture space M from the suction port 8.

Moreover, the range hood A is provided with the switch operation part 9 in the front part which is the cooker side of the food | hood part 1, as shown in FIG.
The switch operation unit 9 is a touch or push type switch (such as start / stop switching of the operation (strong / medium / weak) of the blower 2) and switch operation (start / stop switching of the filter cleaning device B). (Not shown).

And the filter cleaning apparatus B which comprises the filter member 11 rotatably is provided in the exhaust air path 10 from the suction inlet 8 of the range hood A comprised in this way to the discharge outlet 7. As shown in FIG.
As a result, when the contaminated air G sucked and captured from the suction port 8 into the capture space M is discharged through the exhaust air passage 10 and flows into the suction port 7 side, it is separated and recovered from the contaminated air and is collected in the filter member 11. It is configured such that dirt (attachment) such as attached oil and fat or dust can be removed by scraping the filter member 11 by driving and rotating the filter member 11.

≪Description of filter member≫
FIG. 3 is a perspective view and a configuration explanatory view showing the filter member, and FIG. 4 is an enlarged sectional view showing a part of the ventilation portion. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
In FIG. 4, the upper side of the paper is the exhaust downstream side of the exhaust air passage 10, and the lower side of the paper is the exhaust upstream side of the exhaust air passage 10.
The filter member 11 is formed in a disk shape having an appropriate outer diameter using a desired metal plate (galvanized steel plate, corrosion-resistant aluminum plate, stainless steel plate, etc.).
As shown in FIG. 3, the filter member 11 includes exhaust air G ventilation portions 12 along a plurality of rotation circumferential lines Y having different radii around the rotation center portion P.

≪Explanation of ventilation part≫
The ventilation part 12 is intermittently disposed along each rotation circumferential line Y by cutting and bending.
As shown in FIG. 3B and FIG. 4, the ventilation portion 12 is provided between the two cut edges 13 cut substantially parallel to the rotation circumferential line Y and on the exhaust upstream side of the exhaust air passage 10. The air collision surface portion 12a provided in a convex shape from the filter surface (hereinafter referred to as "upstream filter surface") 11a of the filter member 11 facing the exhaust toward the exhaust downstream side, and the air collision surface portion 12a and two cuts The air hole 12b is provided between the edge 13 and the air hole 12b.

When the contaminated air G being cooked passes through the filter member 11, the air collision surface portion 12 a collides (contacts) the contaminated air G and captures and collects dirt such as oil and fat and dust from the contaminated air G (separate recovery). The vent 12b is opened toward the surface direction of the filter surface 11b (hereinafter referred to as "downstream filter surface") of the filter member 11 facing the exhaust downstream side of the exhaust air passage 10 and the role of promoting The role.
As shown in FIG. 4 and FIG. 5 to be described later, the air collision surface portion 12a has a substantially arch-shaped (substantially arcuate) convex shape (upstream side) from the upstream filter surface 11a toward the exhaust downstream side of the exhaust air passage 10. It is bent into a concave shape when viewed from the filter surface 11a side.
As shown in FIG. 4B, the air collision surface portion 12 a is formed so that the convex width L <b> 1 of the air collision surface portion 12 a is narrower than the cutting interval L <b> 2 of the two cutting edges 13.
For example, when the cut interval L2 is 4 mm, the convex width L1 of the air collision surface portion 12a is set to 3 mm, and the convex width edge 14 of the air collision surface portion 12a is 0. 0 than on the edge extension line of the two cut edges 13. A convex width L1 of the air collision surface portion 12a is formed so as to be located 5 mm inside.
Thereby, as shown in FIG. 4B and FIG. 5 to be described later, the vent hole 12 is opened substantially obliquely in cross section between the two cut edges 13 and the convex width edge of the air collision surface portion 12a. It is formed in a shape or a substantially L-shaped opening shape.

  The filter member 11 is subjected to a hydrophilic or water-repellent surface treatment. Accordingly, accumulation of dirt is prevented, and dirt is quickly removed from the upstream filter surface 11a and the air collision surface portion 12a to which dirt adheres by the deposit removing member 17a of the deposit removing means 17 described later of the filter cleaning device B. And it can be easily removed.

FIG. 5 is an explanatory diagram showing the flow of exhaust air when passing through the filter member.
In FIG. 5, the upper side of the paper is the exhaust downstream side of the exhaust air passage 10, and the lower side of the paper is the exhaust upstream side of the exhaust air passage 10.
Thus, the polluted air G ventilation portion 12 provided along the rotation circumferential line Y of the filter member 11 is provided in a convex shape from the downstream filter surface 11 b toward the exhaust downstream side of the exhaust air passage 11. It is a ventilation structure formed from the air collision surface portion 12a and the air hole 12b provided between the air collision surface portion 12a and the two cut edges 13, so that the capture space M of the hood portion 1 can be used during cooking. When the contaminated air G sucked and collected passes through the filter member 11 and passes downstream of the exhaust air passage 10, the contaminated air G collides (contacts) with the air collision surface portion 12a as shown in FIG. Then, the exhaust gas flows out to the exhaust downstream side while greatly changing the direction in the direction of the vent hole 12b opening toward the side (surface direction of the downstream filter surface 11b orthogonal to the direction in which the contaminated air G passes).
Thereby, the separation / recovery rate (capture or collection / recovery rate) of dirt such as oil and fat and dust due to the collision of the contaminated air G can be improved.

≪Description of filter cleaning device≫
6 and 7 are exploded perspective views showing the filter cleaning device according to the present embodiment. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
6 and 7, the right side obliquely downward on the paper surface is the front side (cooker side) of the range hood A, and the left upward side of the paper surface is the rear side of the range hood A (kitchen wall K side). ) And the left and right sides of the range hood A are the left and right sides of the range hood A.

The filter cleaning device B includes the filter member 11 so as to be rotatable, and in addition to use, the filter cleaning device B adheres to the upstream filter surface 11a of the filter member 11 and the air collision surface portion 12a of the ventilation portion 12 and accumulates oil and fat, dust, etc. The filter member 11 is cleaned by removing the dirt so as to be scraped off.
As shown in FIGS. 2, 6, and 7, the filter cleaning device B includes a filter case 15 that rotatably supports and accommodates the filter member 11, and a drive unit that drives and rotates the filter member 11 at a predetermined rotational angular velocity. 16 and adhering matter removing means 17 that press-contacts linearly or planarly along the upstream filter surface 11 a of the filter member 11.

≪Description of filter case≫
The filter case 15 is made of a steel plate or other non-combustible material, and is formed into a substantially quadrangular shape in a bottom view having each side dimension larger than the outer diameter of the filter member 11, and is divided into two vertically divided case portions 15a. , 15b.
Of the upper and lower case portions 15a and 15b, the upper case portion 15a includes, as shown in FIG. 6, mounting pieces 19-1 that extend outward toward the front side edge portions on both side edge portions, respectively. I have. On the other hand, as shown in FIG. 7, the lower case portion 15 b includes an attachment latch piece portion 19-2 bent outward along the rear edge portion.
As a result, the filter case 15 can be freely engaged with and disengaged from the oil panel 5 by screwing the both attachment pieces 19-1 closer to the front side and hooking the attachment pieces 19-2 on the rear side to the oil panel 5. It is formed so that it may be attached to. That is, the filter cleaning device B including the filter member 11 is disposed in the exhaust air passage 10 of the range hood A so as to partition the exhaust upstream side and the exhaust downstream side in an appropriately removable state.

  The upper and lower case portions 15a and 15b are respectively provided with ventilation openings 20a and 20b that are opened with the opening center portions being substantially coincident with the rotation center portion P of the filter member 11, and the ventilation openings 20a and 20a. In part, mounting portions 21a and 21b for rotatably attaching the filter member 11 from the center of the opening to the periphery of the opening circle are provided.

  The upper and lower ventilation openings 20a and 20b are respectively provided in circular shapes in the upper and lower case parts 15a and 15b with an opening diameter slightly smaller than the diameter of the filter member 11. Thereby, the contaminated air G sucked and captured in the capture space M from the suction port 8 passes through the filter member 11 that is positioned between the upper and lower case portions 15a and 15b and rotatably supported and is discharged downstream. It is sucked into the mouth 7 and flows.

The upper and lower attachment portions 21a and 21b are directed from the part of the opening circumferential edge of the ventilation openings 20a and 20b (circular circumferential edge located on the rear edge side of the lower case portion 15a) to the vicinity of the opening center. It is formed in a protruding shape such as a substantially chevron shape or an approximately isosceles triangle shape that is inward in a bottom view. The upper and lower attachment portions 21a and 21b are provided with shaft support holes 22a and 22b of upper and lower stop members 44 that are coaxial with the line of the opening center portion of the ventilation openings 20a and 20b, respectively.
As a result, as shown in FIG. 2, the rotation member 42 attached to the rotation center portion of the filter member 11 by screwing is rotated in the shaft support holes 22 a and 22 b respectively provided in the upper and lower attachment portions 21 a and 21 b. The filter is attached to the upper and lower ventilation openings 20a and 20b except for the upper and lower attachment portions 21a and 21b by being attached by the support shaft member 43 and the upper and lower stop members 44. The member 11 can be rotatably supported and accommodated between the upper and lower case portions 15a and 15b.

In addition, although illustration is abbreviate | omitted, the protrusion shape of the upper and lower attachment parts 21a and 21b toward the vicinity of the opening center part from a part of opening circular periphery of ventilation | gas_flowing opening part 20a and 20b is a rectangular shape by bottom view, etc. A substantially rectangular shape or the like may be used.
Further, the upper and lower attachment portions 21a and 21b may be further extended from the rotation center portion and continuously provided on the opening circumferential edge side of the opposed ventilation opening portions 20a and 20b. That is, the ventilation openings 20a and 20b are formed in an opening shape that is divided into two with the upper and lower attachment parts 21a and 21b interposed therebetween.

Of the upper and lower attachment portions 21a and 21b, as shown in FIG. 7, the lower attachment portion 21b is provided with an opening 23. The opening 23 has a substantially rectangular shape in a plan view corresponding to the length of the deposit removing means 17 from the inward projecting end side of the lower mounting portion 21b toward the rear edge of the lower case portion 15b. It is open.
As a result, as shown in FIG. 2 and FIG. 9 described later, the deposit removing means 17a with the deposit removing member 17a, which will be described later, faced between the upper and lower case portions 15a, 15b. 17 is attached inside the oil tray (oil receiver) 25.

Further, a tray attachment piece 24a made of a spring material is provided along the short side opening edge of the opening 23 on the inward protruding end side of the attachment portion 21b of the lower case portion 15b.
The tray attaching piece 24a is configured to be able to detachably attach and support the oil tray 25 to the lower case portion 15b in cooperation with a later-described tray attaching portion 24b.

  Further, as shown in FIG. 7, the lower case portion 15b is provided with a tray mounting portion 24b. The tray attaching portion 24b is formed to be bent on both sides of the opening 23 located on the rear edge side of the lower case portion 15b so as to face each other at a predetermined interval, and the rear side of the oil tray 25 is pulled out. It is designed to be freely inserted and removed.

  Further, as shown in FIG. 7, the lower case portion 15b is provided with a current plate support portion 26, respectively. The rectifying plate support portion 26 is suspended from the lower case portion 15b in a hook shape, and is formed to support the detachable rear edge portion of the rectifying plate 3 so that the rectifying plate 3 can be engaged and disengaged. ing.

On the other hand, a window hole 27 is provided at one corner of the upper case portion 15a as shown in FIG. The window hole 27 is opened to be slightly larger than the outer diameter of the first gear 31 of the power transmission mechanism 16 b described later constituting the driving means 16.
As a result, the first gear 31 fixed to the output shaft 30 is attached to the upper and lower case portions in a state where a motor 16a, which will be described later, constituting the driving means 16 is attached to the outside (exhaust downstream side) of the upper case portion 15a. It faces between 15a and 15b so that it can be inherent. That is, the first gear 31 is set to the second gear 32 described later on the power transmission mechanism 16b provided along the outer periphery of the filter member 11 rotatably supported and accommodated between the upper and lower case portions 15a and 15b. It can be meshed.

Further, the upper case portion 15a includes gear support members 28 at several places along the circumference of the opening periphery of the ventilation opening 20a. The gear support member 28 includes a gripping portion 28a that supports the outer peripheral edge of the ring of the second gear 32 formed with a ring diameter along the outer periphery of the filter member 11 so as to grip from the outside.
As a result, the upper case portion 15a is formed so as to be able to rotatably support the second gear 32 with the opening center portion of the ventilation openings 20a and 20b as the rotation support shaft portion.
Although not shown, the gear support member 28 is provided with a highly lubricious member made of a synthetic resin material or the like inside the grip portion 28a so that the second gear 32 can rotate with good slipperiness. It can be gripped.

≪Description of drive means≫
The drive means 16 for driving and rotating the filter member 11 rotatably supported and accommodated between the upper and lower case portions 15a and 15b formed in this way has a motor 16a and the power of the motor 16a to the filter member 11. And a power transmission mechanism 16b for transmission.
The motor 16 a is installed on the upper case portion 15 a side via the motor support base 29.
The motor support base 29 is formed in a substantially bowl shape, and is screwed and installed on the corner portion outside (exhaust downstream side) of the upper case portion 15 a located on the opening center line of the window hole 27. Thus, the output shaft 30 of the motor 16a is made to protrude downward from the window hole 27 between the upper and lower case portions 15a and 15b.

In this way, the motor 16a installed in the upper case portion 15a is electrically connected to a filter cleaning switch (not shown) provided in the switch operation portion 9 of the hood portion 1.
As a result, the filter cleaning switch is activated by an ON operation of the filter cleaning switch, and the filter member 11 is driven to rotate through the power transmission mechanism 16b and stopped by an OFF operation. That is, the filter cleaning device B is configured to start and stop operation by an ON / OFF operation of the filter cleaning switch of the switch operation unit 9.

The power transmission mechanism 16b serves to convert the rotational speed of the motor 16a to an optimum rotational angular speed for driving and rotating the filter member 11 when the filter member 11 is cleaned.
The power transmission mechanism 16 b includes a first gear 31 attached to the output shaft 30 of the motor 16 a and a second gear 32 attached along the outer periphery of the filter member 11.
The first gear 31 is a pinion gear (small gear) having a predetermined outer diameter, and is fixed to the output shaft 30 of the motor 16a so as not to rotate.

  The second gear 32 is a rack gear (large gear) engraved on the outer periphery of the ring member formed with a ring diameter corresponding to the outer diameter of the filter member 11, and the ring member is disposed on the outer periphery of the filter member 11. By being attached by screwing or the like, it is provided along the outer periphery.

Further, the outer periphery of the ring member on which the second gear 32 is formed is provided with an outer peripheral edge of the ring that protrudes with a larger outer diameter except for the outer peripheral portion on which the second gear 32 is formed. ing.
As a result, the outer peripheral edge of the ring can be gripped with respect to the gripping portions 28a of the gear support members 28 at several locations around the ring, and the filter member 11 can be rotated within the filter case 15 and the rotary support shaft member 43 can be rotated as a fulcrum. It can be supported and accommodated. That is, the filter member 11 is rotatably supported and accommodated in the filter case 15 so as to be driven and rotated by the power of the motor 16a.

≪Explanation of deposit removal means≫
FIG. 8 is an exploded perspective view showing the deposit removing means, and FIG. 9 is an explanatory view showing a pressure contact state of the deposit removing member to the filter member during cleaning of the filter member. Here, description will be made with reference to FIGS. 2 and 3 as appropriate.
In FIG. 9, the upper side of the paper is the exhaust downstream side of the exhaust air passage 10, and the lower side of the paper is the exhaust upstream side of the exhaust air passage 10.
The adhering matter removing means 17 is an oil and fat component adhering to the upstream filter surface 11a facing the exhaust upstream side of the exhaust air passage 10 of the filter member 11 driven and rotated during cleaning, the air collision surface portion 12a of each ventilation portion 12, and the like. It removes dirt such as dust and dirt.
The adhering matter removing means 17 includes a convex / concave surface (upstream filter surface 11a on the upstream filter surface 11a side of the filter member 11 and an air collision surface portion 12a that is concave from the upstream filter surface 11a toward the exhaust downstream side. And a support member 17b for supporting the deposit removing member 17a in pressure contact with the upstream filter surface 11a. It is configured.

≪Explanation of deposit removal member≫
The adhering matter removing member 17a is in pressure contact with the upstream filter surface 11a and the air collision surface portion 12a on the upstream filter surface 11a side with an appropriate elastic force, and when the filter member 11 is cleaned, the upstream filter surface 11a and the air collision The dirt adhering to the surface portion 12a is removed so as to be scraped off as the filter member 11 is driven.
The deposit removing member 17a is made of a nonflammable rubber material having an appropriate elasticity and has a length corresponding to the radius of the filter member 11 and a substantially strip-like shape having a predetermined width and thickness (plate thickness). Is formed.

And the deposit | attachment removal member 17a has the convex part 33a and the recessed part 33b on the press-contacting edge part 33 which press-contacts along the uneven surface which consists of the upstream filter surface 11a and the air collision surface part 12a of each ventilation part 12. I have.
That is, as shown in FIG. 8 and FIG. 9, the deposit removing member 17 a is formed on the convex portion 33 a that presses against the concave air collision surface portion 12 a toward the exhaust downstream side of the exhaust air passage 10 and the upstream filter surface 11 a. The press-contact edge portion 33 is formed in a concave-convex shape in which the concave portions 33b to be press-contacted are alternately arranged in the length direction.

  The convex portion 33a is provided on the pressure contact edge portion 33 of the deposit removing member 17a at a position intersecting with each rotation circumferential line Y centering on the rotation center portion P of the filter member 11 shown in FIG. The height from the upstream filter surface 11a to the air collision surface portion 12a is substantially the same as the protruding width L1 of the air collision surface portion 12a. In other words, the convex portion 33a is formed between the concave portions 33b with a projecting width narrower than the cut interval L2 between the two cut edges 13.

Further, as shown in FIG. 8, a cut 34 having a predetermined length (depth) is provided at the boundary between the convex portion 33a and the concave portion 33b provided at a position not intersecting with each rotation circumferential line Y. The convex portion 33a is separated from the bottom of the concave portion 33b.
Thereby, the convex part 33a exists intermittently along each rotation circumference Y of the filter member 11, as shown to (a) of FIG. 9, when the filter member 11 rotates (at the time of cleaning). When the air collision surface part 12a (ventilation part 12) is approached with the drive rotation of the filter member 11, the protruding end side is slightly elastically deformed and is pressed against the air collision surface part 12a, and FIG. As shown in the figure, when the air filter surface 12a passes and the upstream filter surface 11a continuous in the circumferential direction of the rotation is approached, the recesses are largely elastically deformed from the root side separated from the recesses 33b by the cuts 34. 33b is pressed against the upstream filter surface 11a.

  Further, the protrusion 33a has a protrusion width that is substantially the same as the protrusion width L1 of the air collision surface portion 12a and is formed to be narrower than the cut interval L2 of the two cut edges 13, so that the filter member 11 is rotating ( During cleaning, contact with the two cutting edges 13 is avoided.

  In addition, although illustration is abbreviate | omitted, when the deposit | attachment removal member 17a is formed using a soft nonflammable rubber material etc., it is not necessary to always make the cut 34 in the boundary of the convex part 33a and the recessed part 33b. That is, during the cleaning of the filter member 11, when the convex portion 33a reaches the upstream filter surface 11a between the air collision surface portions 12a (ventilation portion 12), the convex portion 33a is greatly elastically deformed by the softness obtained from the material. Because it can be expected.

≪Description of support member≫
As shown in FIGS. 2 and 9, the support member 17b is attached to the oil tray 25 so that the deposit removing member 17a is appropriately attached to the upstream filter surface 11a of the filter member 11 and the air collision surface portion 12a of the ventilation portion 12. It plays the role of pressure support with pressure contact force.
The support member 17b is made of a non-combustible material having an appropriate rigidity and has a length approximately the same as the length of the deposit removing member 17a shown in FIGS. Is formed.

As shown in FIGS. 2 and 9, the support member 17 b formed in this way is attached to the inside of the oil tray 25 so that the deposit removing member 17 a faces the rotation direction (arrow X) of the filter member 11. Further, it is supported at an appropriate inclination angle.
As a result, the pressure contact edge 33 of the deposit removing member 17a is pressed against the upstream filter surface 11a and the air collision surface portion 12a in a planar shape, and dirt is efficiently removed from the upstream filter surface 11a and the air collision surface portion 12a. It can be scraped off and removed.
Further, when cleaning the deposit removing member 17a, the oil tray 25 attached to the lower case portion 15b of the filter case 15 is detachably attached without removing the filter cleaning device B from the range hood A. By removing, the deposit removing member 17a including the supporting member 17b of the deposit removing means 17 together with the oil tray 25 can be washed in a sink or the like.

[Description of operation]
Next, the range hood A to which the filter cleaning device B configured as described above is applied will be briefly described.
After cooking is finished and the user operates the operation switch unit 9 to stop the operation of the blower 2, when the filter cleaning switch of the operation switch unit 9 is turned ON, the motor 16a of the filter cleaning device B is activated, The power output from the motor 16a is transmitted to the filter member 11 via the first gear 31 and the second gear 32, the filter member 11 is driven to rotate at a predetermined rotational angular velocity, and the filter cleaning device B is operated. Start.

  When the filter member 11 is driven and rotated, the oil and fat, dust, and the like separated from the contaminated air G during cooking and attached to and recovered from the upstream filter surface 11a facing the exhaust upstream side and the air collision surface portion 12a of the ventilation portion 12 are collected. Dirt is removed from the upstream filter surface 11a and the air collision surface portion 12a by the convex portion 33a and the concave portion 33b provided in the pressure contact edge portion 33 of the deposit removing member 17a.

  Thus, the dirt removed from the upstream filter surface 11a and the air collision surface portion 12a by the convex portion 33a and the concave portion 33b of the pressure contact edge portion 33 of the deposit removing member 17a falls (flows down) to the lower oil tray 25. And recovered.

When the filter cleaning device B is operated for a certain period of time, the motor 16a is stopped by the operation of turning off the filter cleaning switch of the operation switch 9 by the user, and the operation of the filter cleaning device B is stopped.
The operation time of the filter cleaning device B is performed according to a predetermined set time. When the set time elapses, the motor 16a is stopped and the operation can be automatically stopped.

≪Description of other filter members≫
Next, another embodiment of the filter member 11-1 will be described.
FIG. 10 is a perspective view showing another embodiment of the filter member, and FIG. 11 is a cross-sectional view.
In addition, the filter member 11-1 which concerns on this other embodiment employ | adopts the ventilation structure of the contaminated air G which provided the ventilation part 40 continuously along the rotation circumference. Since the other components are basically the same as those in the above-described embodiment, the same reference numerals are given, and redundant description is omitted.

That is, the filter member 11-1 has the ventilation portions 40 arranged continuously along the rotation circumferential line Y.
The ventilation portion 40 is located between two cut edges 41 cut substantially parallel to the rotation circumferential line Y, and the downstream filter surface 11b of the filter member 11-1 facing the exhaust downstream side of the exhaust air passage 10. To the air collision surface portion 40a provided in a convex shape with a predetermined step, and the air hole 40b provided between the air collision surface portion 40a and the two cut edges 41.
As shown in FIGS. 10 and 11, the air collision surface portions 40 a provided in a ring shape along the rotation circumferential line Y are equally spaced in the rotation circumferential direction along the rotation circumferential line Y. The connection holes 42 are connected to and supported by the two cutting edges 41, and the ventilation holes 40 b that continuously open along the rotation circumferential line Y are formed between the two cutting edges 41. To be.

In addition, although illustration is abbreviate | omitted, the deposit | attachment removal member which removes dirt from the filter member 11-1 of this other embodiment should select and form the nonflammable rubber material and plastic material which have slight elasticity. Can do.
That is, the air collision surface portion 40a of the ventilation portion 40 is formed in a ring shape along the rotation circumferential line Y of the filter member 11-1, so that the air collision surface portion 40a on the rotation circumferential line Y as in the above embodiment. The convex portions 33a and the concave portions 33b that are alternately provided on the press-contact edge portion 33 are made to adhere to the air collision surface portion 40a and the upstream filter surface 11a to which dirt adheres, without requiring large elastic deformation in accordance with the convex and concave surfaces of Can be reliably pressed.

The specific configuration of the embodiment of the present invention is not limited to each of the above-described embodiments, and there are design changes and the like without departing from the spirit of the present invention described in claims 1 to 7. However, it is included in the present invention.
For example, the air collision surface portions 12 a and 40 a of the ventilation portions 12 and 40 can be formed in a convex shape toward the exhaust upstream side of the exhaust air passage 10.

A Range hood B Filter cleaning device 1 Hood part 2 Blower 7 Discharge port 8 Suction port 10 Exhaust air path 11, 11-1 Filter member 11a, 11b Filter surface 12, 40 Ventilation part 12a, 40a Air collision surface part 12b, 40b Pore 13 Cutting edge 16 Driving means 17 Adhering substance removing means 17a Adhering substance removing member 17b Supporting member 33 Pressure contact edge part 33a Convex part 33b Concavity G Contaminated air P Rotation center part W Rotating circumference

Claims (7)

Provided with a filter cleaning device that rotatably comprises a filter member in an exhaust air passage leading to a discharge port that sucks and collects contaminated air during cooking and exhausts the contaminated air to the outside or returns indoors,
The filter cleaning device includes a driving means for driving and rotating the filter member formed in a disk shape,
A range hood comprising: a deposit removing means for removing deposits by pressing along the filter surface of the filter member;
The filter member is provided with a ventilation portion of the contaminated air intermittently or continuously along a rotation circumferential line centering on the rotation center portion,
The ventilation portion includes an air collision surface portion that is provided in a convex shape from the filter surface of the filter member between two cut edges that are cut substantially parallel to the rotation circumferential line or a tangent line thereof, and the air collision surface portion. And a vent hole provided between the two cut edges,
The range hood is characterized in that the deposit removing means includes a deposit removing member that presses the filter member so as to be along the uneven surface formed by the filter surface and the air collision surface portion when the filter member rotates. The air collision surface portion is formed in a convex shape toward the exhaust downstream side of the exhaust air passage,
The range hood according to claim 1, wherein the deposit removing means is disposed at a position where the deposit removing member is in pressure contact with the filter member from the exhaust upstream side.   The convex width of the air collision surface portion is formed to be narrower than the incision interval between two incision edges that are substantially parallel to a rotation circumferential line centering on the rotation center portion of the filter member or its tangent line. The range hood according to claim 1 or 2, wherein the range hood is provided. The ventilation portions are respectively provided along a plurality of rotation circumferential lines centering on the rotation center portion of the filter member,
The deposit removing member is disposed in a direction intersecting with each of the plurality of rotation circumferential lines, and is formed so as to be elastically deformed according to the uneven surface when the filter member is rotated. The range hood according to any one of claims 1 to 3. The ventilation portions are respectively provided along a plurality of rotation circumferential lines centering on the rotation center portion of the filter member,
The adhering matter removing member is disposed in a direction intersecting with each of the plurality of rotation circumferential lines, and a press-contact edge portion that press-contacts along the uneven surface when the filter member is rotated includes The convex part or recessed part is provided in the position which cross | intersects a rotation circumference, and it is formed in the uneven | corrugated shape provided with the recessed part or convex part in the position which does not cross | intersect. Range hood.   6. The range hood according to claim 5, wherein one or both of the convex portion and the concave portion are formed so as to be elastically deformed according to the concave and convex surface when the filter member is rotated.   The range hood according to any one of claims 1 to 6, wherein the filter member is subjected to a hydrophilic or water-repellent surface treatment.

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