JP2009127931A - Range hood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a range hood including an oil and fat capturing member capable of capturing oil and fat contained in waste gas on this side of a connecting port of a hood communicating with the interior of a blower unit without a grease filter. <P>SOLUTION: The waste gas G flows through a capture space M from a suction gap S along a downward opening peripheral edge 9 of the capture space M of the hood part 1 toward the connecting port 5 to the interior of the blower unit 2. The waste gas is brought into contact with the oil and fat capturing member 10 to change the flowing direction thereof, and the member captures the oil and fat from the waste gas G. A waste gas contact projecting part 10b of the capturing oil and fat capturing member is disposed to face the interior of the blower unit 2 through the connecting port 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention includes a hood portion that is formed in a flat box shape with a capture space opened downward for sucking and collecting waste gas (contaminant) generated during cooking, and an upper portion of the hood portion. The present invention relates to a thin type range hood in which a blower unit is installed.

There are two types of range hoods: a thin (flat) type range hood with a shallow waste gas capture space, and a deep type range hood in which the capture space is formed deep in the height direction.
In both the thin type and deep type range hoods, a grease filter for capturing oil and fat contained in the waste gas is disposed in the hood portion.
For example, in a thin type range hood, as described in Patent Document 1 and Patent Document 2, etc., a blower unit is connected to a capture space on a hood portion having a capture space for sucking and capturing waste gas. Is installed. And a grease filter is arrange | positioned in the position which partitions off between the downward opening side of the capture space provided with the baffle plate, and the air blower unit side, and the fats and oils contained in waste gas are captured by this grease filter I am doing so.
As the grease filter, a slot type, a punching metal type, and a mesh type made of a wire mesh or a lath mesh are generally used.
Japanese Unexamined Patent Publication No. 2005-282872 (see paragraph numbers 0014 and 0020 and FIG. 1 and FIG. 2 in the specification) Japanese Unexamined Patent Publication No. 2006-170539 (see paragraph numbers 0011 and FIG. 1 in the specification)

By the way, in any of the above-described grease filters, the oil and fat contained in the waste gas is captured by the contact of the waste gas when the waste gas passes through. For example, in the slot type, a thin flat plate is provided with a large number of ventilation holes inclined in one direction without leaving a plane portion by obliquely cutting and raising the gas contact tongue so as to be refracted in one direction, When the waste gas passes through the ventilation hole so as to meander, it is formed such that oil and fat are attached and captured by contact with the gas contact tongue.
That is, since the grease filter is constituted by a collection of fine holes through which the waste gas passes, the grease filter causes clogging in which the holes are blocked by the fat and oil gradually deposited. For this reason, it is necessary to periodically clean up the oil and fat, but due to the structure, it is very troublesome and troublesome to remove the oil and fat adhering in a sticky manner from the aggregate of fine holes. The problem remained.

Therefore, the present invention was devised to solve the above-mentioned problems, and the hood part communication port that communicates the fat and oil contained in the waste gas to the blower unit without using a grease filter. It is providing the range hood provided with the oil-fat content capture member which can be caught before this.
In addition, in the present invention, in addition to oil and fat content in the vicinity of the communication port of the hood part, an oil and fat content capturing member that can reduce noise level by reducing wind noise (exhaust noise) generated in the blower unit. It is to provide a range hood equipped.

In order to solve the above-mentioned problem, in the present invention, a hood part having a suction gap along the opening periphery of the capture space that opens downward, and a communication port opened in the hood part communicate with the capture space. And an exhaust duct connected to the blower unit from the communication port for exhaust gas sucked and collected in the capture space from the suction gap. A range hood configured to exhaust to the outside through,
The oil and fat content capturing member for contacting the waste gas flowing through the capture space from the suction gap toward the communication port to change the flow direction and capturing oil and fat from the waste gas, It is characterized by being provided perpendicular to the flow direction of waste gas.
Here, the oil and fat content capturing member includes a waste gas contact convex portion that faces the inside of the blower unit from the communication port, and the waste gas contact convex portion is a plan view along the opening edge shape of the communication port. The shape is preferably formed in a substantially convex shape having such a size as to secure a flow path for accelerating the flow of the waste gas with the opening periphery of the communication port.

According to such a configuration, when the waste gas sucked and collected from the suction gap into the capture space by the suction force of the blower unit flows in the direction of the communication port with the blower unit, the oil and fat content capturing member The flow direction is changed by contact. The oil / fat contained in the waste gas is attached to the oil / fat capture member and captured by the inertial force (inertial resistance) generated at this time.
And according to the structure which has arrange | positioned so that a waste gas contact convex part may face in a blower unit from a communication port, it is a fan by the flow path ensured between the opening periphery of a communication port, and a waste gas contact convex part. Waste gas flow into the unit is accelerated.
Thereby, when the flow direction is changed to a substantially right angle direction toward the direction in the blower unit by the contact of the waste gas with the waste gas contact convex portion, it is vigorously converted. In other words, the fat and oil contained in the waste gas due to a large inertia force generated when the flow direction of the waste gas is converted to a direction substantially perpendicular to the direction in the blower unit before the connection port. Can be captured by vigorously adhering to the convex outer peripheral surface of the waste gas contact convex portion.

  In the present invention, the oil and fat content capturing member is disposed in the downward opening of the capture space and is formed in a substantially flat plate shape with a size that secures the suction gap with the periphery of the downward opening. And a waste gas contact convex portion formed in a substantially convex shape at a portion corresponding to the communication port of the panel plate.

According to such a configuration, as described above, in addition to the capture action in which the oil and fat content in the waste gas is captured and recovered, by arranging the panel plate of the oil and fat content capture member in the downward opening of the capture space, A suction gap can be ensured between the downward opening periphery of the capture space.
That is, the panel board of the oil / fat content capturing member can also serve as a known current plate.
Accordingly, the existing range hood can be provided with an oil / fat content capturing member for capturing and collecting the oil / fat by bringing the waste gas into contact with a known configuration in which the waste gas contact convex portion is provided on a known rectifying plate. .
In addition, the panel plate can be opened and closed in the downward opening of the capture space in the same way as a known rectifying plate, and by attaching it detachably, the oil and fat collected on the panel plate and the convexity of the waste gas contact projection Improvement of daily maintenance such as removing oil and fat adhering to the outer peripheral surface can be achieved.

  Further, the present invention is characterized in that the capture space is gradually narrowed from the suction gap side to the communication port side. More specifically, the suction gap is formed between the panel plate and the hood cover that forms the capture space that opens downward by being connected to the communication port via a connection port and provided in the hood portion. It is preferable to form the hood cover so that it gradually becomes narrower from the side to the connecting port side.

According to such a configuration, when the waste gas sucked and collected from the suction gap flows toward the communication port, the flow of the waste gas is gradually accelerated as it approaches the communication port. .
As a result, the waste gas is converted into a substantially perpendicular flow direction toward the blower unit while vigorously contacting the waste gas contact convex portion before the communication port. The fat and oil contained in the waste gas can be vigorously adhered to the convex outer peripheral surface of the waste gas contact convex portion and captured by the large inertia force generated at this time.
Further, according to such a configuration, the flow direction of the waste gas is changed by the synergistic action of the acceleration of the waste gas by the flow path secured between the opening periphery of the communication port and the waste gas contact convex portion. When converted to a substantially perpendicular direction toward the inner direction, an even greater inertia force is generated to cause the oil and fat contained in the waste gas to adhere vigorously to the convex outer peripheral surface of the waste gas contact convex portion. be able to.

  Furthermore, in the present invention, the waste gas contact convex portion is formed in a hollow shape having a sealed internal space, and has a through hole on a projecting end face facing the blower unit. Features.

According to such a configuration, as described above, the waste gas contact convex portion has noise such as wind noise generated in the blower unit in addition to the capture action of capturing and collecting oil and fat by contact with the waste gas, for example, Turbulent flow caused by interference (collision) of the flow of waste gas flowing in the exhaust box constituting the blower unit from the communication port of the hood section, and the suction port of the fan casing in which the exhaust fan is accommodated The noise generated in the exhaust box due to air resistance generated when waste gas is sucked from the fan casing into the fan casing is directed toward the wind path of the waste gas that flows from the capture space to the exhaust box through the communication port It also has a sound absorbing effect of absorbing sound through the through-hole and the internal space.
That is, noise having a resonance frequency is incident on the internal space (resonance chamber) of the waste gas contact convex portion, and the air in the through hole serving as the neck of the resonator vibrates violently and is absorbed by friction loss.

The range hood of the present invention is configured as described above, so that the waste gas sucked and collected in the capture space of the hood with a rapid increase in the flow velocity from the suction gap is the direction of the communication port with the blower unit. The direction of flow through the capture space toward the surface is changed by contact with the oil / fat capture member, and the oil / fat contained in the waste gas is transferred to the oil / fat capture member by the inertial force (inertial resistance) generated at this time. Attached and captured.
In addition, the flow direction of the waste gas flowing toward the communication port is in front of the communication port by the contact with the waste gas contact convex portion of the oil and fat capturing member arranged so as to face the blower unit from the communication port. By being configured to be converted to a substantially right angle direction toward the direction of the blower unit, a larger inertia force (inertial resistance) is generated in the waste gas while vigorously contacting the waste gas with the waste gas contact convex portion. The contained oil and fat can be captured by vigorously adhering to the convex outer peripheral surface of the waste gas contact convex portion. Therefore, it can be expected that the fats and oils in the waste gas are reliably captured and recovered before the communication port.
Thereby, the fats and oils contained in the waste gas can be efficiently and reliably captured and recovered without using a grease filter.

Moreover, in this invention, the oil-and-fat content capture member is provided with the panel board for ensuring a suction clearance between the opening periphery of capture space. That is, since the panel plate can also serve as a known rectifying plate, the oil and fat for capturing and collecting the oil and fat by bringing the waste gas into contact with the known rectifying plate having a waste gas contact convex portion. A minute capturing member can be formed. Thereby, an oil-and-fat content capture member can be provided easily and at low cost without giving a significant improvement to a known range hood.
In addition, the panel plate can be opened and closed in the downward opening of the capture space and attached in a detachable manner, like a known current plate, and can be washed in a sink or the like. Therefore, it is possible to expect an improvement in daily maintenance by improving cleaning properties such as removing oil and fat collected on the panel plate and oil and fat adhering to the convex outer peripheral surface of the waste gas contact protrusion.

Further, according to the present invention, the exhaust unit (exhaust gas) is formed by a through hole and an internal space (resonance chamber) that open in the direction of the wind path through which the waste gas flows in the waste gas contact convex portion formed in a sealed hollow shape. Helmholtz resonators can be configured for the box).
Thereby, since noise such as wind noise generated in the blower unit can be absorbed into the waste gas contact portion, an oil and fat content capturing member that can be expected to reduce the noise level in the blower unit is provided. A range hood can be provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a longitudinal side view showing a range hood provided with an oil and fat content capturing member according to the first embodiment, and FIG. 2 is a cross-sectional plan view of the range hood.
There are two types of range hoods, a wall-mounted type and a ceiling-mounted type (island type). In this embodiment, a wall-mounted range hood will be described as an example.

≪Configuration of range hood≫
The range hood A is installed almost directly above a cooking utensil (not shown), and is configured to exhaust through the exhaust duct 3 while sucking and capturing the waste gas G generated during cooking.
As shown in FIGS. 1 and 2, the range hood A is configured by installing a blower unit 2 on a flat (thin) hood portion 1.
As shown in FIG. 1, the range hood A is a curtain formed so as to cover the blower unit 2 and the exhaust duct 3 from the top plate 1a of the hood portion 1 to the kitchen ceiling K-2. The plate 4 is provided so that it can be removed as appropriate.

≪Food part composition≫
As shown in FIG. 1, the hood portion 1 is formed in a flat box shape having a capture space M that opens downward.
And the food | hood part 1 is provided with the communication port 5 in the top plate 1a, as shown in FIG.1 and FIG.2.
This communication port 5 is for communicating the inside of the exhaust box 2a described later of the blower unit 2 and the capture space M, and is provided in a substantially central portion of the top plate 1a with a predetermined opening area.

Further, as shown in FIG. 1, the hood portion 1 is provided with a hood cover 6 on the lower side of the communication port 5 so as to partition the downward opening side of the capture space M and the communication port 5 side, so that the hood portion 1 faces downward. An open shallow capture space M is formed.
The hood cover 6 is integrally formed by press working or the like, and is a portion corresponding to the communication port 5 of the hood part 1 and is opened with an opening peripheral shape (opening area) of the communication port 5 The connection port 8 is provided. By connecting the connection port 8 to the periphery of the opening of the communication port 5 by screwing or spot welding, the inside of the exhaust box 2a of the blower unit 2 and the capture space M are communicated with each other via the connection port 8 and the connection port 5. I am doing so.

  Although not shown, the connection port 5 is provided so as to hang down from the top plate 1 a of the hood portion 1 without opening the connection port 8 to the hood cover 6 and opening the connection port 8. Can be connected by screwing or other connection means.

  Furthermore, as shown in FIG. 1, the hood portion 1 includes a panel plate 10 a of an oil / fat content capturing member 10 to be described later so as to secure a suction gap S with the downward opening peripheral edge 9 of the capture space M. . As a result, the waste gas G rising from the cooking device or cooking pan is sucked and collected in the capture space M at a rapid speed from the suction gap S along the panel plate 10a.

≪Blower unit configuration≫
As shown in FIG. 1, the blower unit 2 is located vertically on the exhaust box 2a and on the rear half side excluding the front half side communicating with the communication port 5 of the hood part 1 in the exhaust box 2a. And an exhaust device 2b.

≪Exhaust box configuration≫
As shown in FIG. 1, the exhaust box 2a is mounted on the top plate 1a by screws or the like so that the front half communicates with the communication port 5 opened in the top plate 1a of the hood portion 1. It is formed in a substantially rectangular shape in plan view.

≪Exhaust system configuration≫
As shown in FIG. 1 and FIG. 2, the exhaust device 2 b is an exhaust fan that is supported by a fan motor 12 in a fan casing 11 having a connecting cylinder to which an exhaust duct 3 is connected at a circumferential upper surface portion. (Centrifuge fan, multiblade fan) 13 is configured to be accommodated coaxially.

≪Fan casing configuration≫
The fan casing 11 is formed by fixing a front plate and a rear plate to the front and rear of a volute-shaped body by welding or the like.
The fan casing 11 has an upper opening connected to the exhaust duct 3 that can be hooked / removed on the upper surface plate of the exhaust box 2a by a relationship between a hooking claw and a hooking hole (not shown), or a screw It is attached by a stop.
As a result, the fan casing 11 is positioned vertically on the rear side excluding the inflow space N of the waste gas G secured on the front half side communicating with the communication port 5 of the hood part 1 in the exhaust box 2a. By being provided, the suction port 15 formed by the bell mouth 14 is accommodated in the exhaust box 2a in a front-facing state in which the suction port 15 is opened toward the inflow space N side.

  And the range hood A of this embodiment is provided with the fat and oil content capture member 10 in the capture space M in the food | hood part 1, as shown in FIG.

≪Configuration of oil and fat content capturing member according to the first embodiment≫
FIG. 3 is a perspective view showing the oil and fat content capturing member according to the first embodiment. Here, description will be made with reference to FIG. 1 as appropriate.
As shown in FIG. 1, the oil and fat content capturing member 10 is supported by the hood cover 6 and is attached to the capture space M in a state of being substantially flush with the downward opening edge 9 of the capture space M, and from the communication port 5 to the exhaust box 2a. And a waste gas contact convex portion 10b projecting in a substantially convex shape from the panel plate 10a at a position facing the inflow space N.

≪Configuration of panel board≫
The panel board 10a has a substantially planar shape substantially the same as the downward opening shape of the capture space M, and is formed in a substantially flat plate shape that is slightly smaller than the opening area. That is, it is formed in a substantially rectangular shape in plan view like the well-known current plate, and is provided with an edge portion 7 that is bent and raised to an appropriate height at the periphery of each edge.
As shown in FIGS. 1 and 3, the panel plate 10 a is pivotable on the rear side by right and left support members 16 provided on the rear side of the hood cover 6 that forms the capture space M, and is appropriately detached. The front side is supported by the left and right engaging / disengaging members 17 provided on the front side of the hood cover 6 so as to be freely disengaged.
Thereby, the oil and fat adhering to the oil and fat content capturing member 10 is wiped off. That is, as shown in the enlarged view of FIG. 1, when the oil and fat collected on the panel plate 10 a and the oil and fat adhering to the convex outer peripheral surface of the waste gas contact convex portion 10 b are wiped off, the panel plate 10 a is removed from the hood portion 1. Rotate downward toward the rear side (kitchen wall surface K-1 side). Alternatively, the oil-and-fat content capturing member 10 can be removed when it is washed in a sink or the like.

≪Configuration of support member≫
As shown in FIGS. 1 and 3, the left and right support members 16 have a substantially L-shaped hook portion 16a attached to the hood cover 6 side, and are rotatable to the hook portion 16a. A hook-shaped hook part 16b having a substantially U-shape in a plan view attached to the panel plate 10a side so as to be detachable is configured.

≪Configuration of engagement / disengagement member≫
FIG. 4 is a perspective view and a front view showing the engaging / disengaging member.
As shown in FIGS. 1 and 4, the left and right engaging / disengaging members 17 intersect a movable pin 17a urged by a compression spring 18 attached to the lower surface of the top plate 1a of the hood portion 1 and the movable pin 17a. It is configured to include a locking body 17b having a pin locking hole 25 attached to the upper surface of the panel plate 10 so as to be freely detachable.

The movable pin 17a is provided in a spring accommodating body 21 attached to the back surface of the top plate 1a via an L-shaped bracket 20, and is advanced by a compression spring 18 accommodated in the spring accommodating body 21 (see FIG. 4 (see (a) of FIG. 4), it is retracted (pressed) into the spring accommodating body 21 against the compression spring 18 (see (b) of FIG. 4).
As shown in FIG. 4, the movable pin 17 a is formed by a head portion 22 formed with a slightly larger outer diameter and a shaft portion 23 that is incorporated into the spring accommodating body 21 so as to be movable forward and backward.

As shown in FIG. 4, the locking body 17 b includes a tongue piece 24 that is inclined outward in order to recede the head 22 of the movable pin 17 a against the compression spring 18.
Moreover, the latching body 17b is provided with the pin latching hole 25 for latching the movable pin 17a removably. The pin locking hole 25 has an opening 25a having a diameter larger than that of the head 22 of the movable pin 17a at the central portion of the locking body 17b, and a shaft portion of the movable pin 17a communicating with the upper side of the opening 25a. 23 is formed in a substantially dharma hole shape from a bearing portion 25b for receiving the bearing 23.

Further, as shown in the enlarged view of FIG. 1, the panel plate 10a is attached to the convex outer peripheral surface of the waste gas contact convex portion 10b by the change of the flow direction by the contact of the waste gas G and flows down to the back surface of the panel plate 10 ( An oil recovery window 26 for recovering the oil and fat to be dripped is provided, and an oil tray 27 is provided on the lower surface side (front surface side) of the oil recovery window 26.
Although not shown, the oil tray 27 is detachably attached to the panel plate 10 by an appropriate means such as a slide method. As described above, the panel plate 10 by the left and right engaging / disengaging members 17 is provided. When the panel plate 10 is rotated downward with the left and right support members 16 as fulcrums to open the capture space M of the hood portion 1, it can be easily removed.

≪Configuration of waste gas contact convex part≫
As shown in FIG. 1, the waste gas contact convex portion 10 b flows in the direction of the communication port 5 (connection port 8), and the waste gas G sucked and collected from the suction gap S into the capture space M flows through the communication port. The flow direction is changed toward the inflow space N of the exhaust box 2a by contact with the waste gas G before 5 and the oil and fat contained in the waste gas G by inertia force (inertial resistance) generated at this time. It plays the role of attaching and capturing the minutes.
The waste gas contact convex portion 10b is integrally formed by pressing and drawing bending, and as shown in FIGS. 2 and 3, from the opening area along the peripheral edge shape of the communication port 5. Is formed in a plan view shape that is slightly smaller.
Then, as shown in FIG. 1, the waste gas contact convex portion 10b is formed in a hollow substantially convex shape having a projecting end surface at a height facing the inflow space N in the exhaust box 2a and having a lower surface opened. ing.
Further, the waste gas contact convex portion 10b is provided with a fastening edge portion 28 that is bent outwardly at the periphery of the lower end of the opening, and is attached to the panel plate 10a by appropriate fastening means for spot welding, screwing, or the like. It is formed to be.

The waste gas contact convex portion 10b formed in this way is aligned with the downward opening peripheral edge 9 of the capture space M of the hood portion 1 in the same manner as the known rectifying plate, and the support member 16 and the engagement member described above. The inflow space in the exhaust box 2a from the connection port 5 in a state of being aligned with the opening axis of the connection port 5 by being attached to the portion corresponding to the connection port 5 in the panel plate 10a supported by the removing member 17 Arranged to face N.
Thereby, as shown in FIG.1 and FIG.2, the waste gas contact convex part 10b orthogonally crosses a convex outer peripheral surface with respect to the flow direction of the waste gas G which flows through the capture space M toward the communication port 5 from the suction clearance S. The flow path R for accelerating the flow of the waste gas G whose flow direction is converted toward the direction of the inflow space N by contact with the convex outer peripheral surface is formed between the connection port 5 and the opening peripheral edge of the connection port 8. Secure in between.

[Description of action]
Next, the panel plate 10a of the oil / fat content capturing member 10 formed in this manner is supported by the downward opening of the capture space M of the hood portion 1 in the same manner as a well-known rectifying plate, whereby the waste gas contact convex portion 10b. The operation of the range hood A according to the first embodiment, which is arranged so as to face the inflow space N of the blower unit 2 from the communication port 5, will be briefly described. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
Waste gas G sucked and collected from the suction gap S into the collection space M in the hood body 1 by the suction force of the exhaust device 2b is directed toward the communication port 5 (connection port 8) as shown in FIG. When flowing in the capture space M and flowing from the communication port 5 toward the inflow space N of the exhaust box 2a, the flow direction is changed by the contact with the waste gas contact convex portion 10b of the oil and fat content capturing member 10 before the communication port 5. It is converted into a substantially right angle direction toward the inflow space N. Then, the waste gas G converted into the flow toward the inflow space N by the contact with the convex outer peripheral surface of the waste gas contact convex portion 10b is secured between the communication port 5 (connection port 8). The flow path R accelerates the flow to the inflow space N.
As a result, a large inertia force (inertia resistance) is generated when the flow direction of the waste gas G is converted to the direction of the inflow space N before the connection port 5, and the waste gas G is wasted by this large inertia force. As shown in the enlarged view of FIG. 1, the oil and fat contained in the waste gas G is attached to the convex outer peripheral surface of the waste gas contact convex portion 10 b in contact with the convex outer peripheral surface of the gas contact convex portion 10 b. Be captured.

  The oil and fat content separated and captured from the waste gas G by the contact of the waste gas G with the convex outer peripheral surface of the waste gas contact convex portion 10b flows down (drops) onto the panel plate 10a, and the oil recovery window 26 To the oil tray 27.

  Moreover, at the time of regular and daily maintenance such as removing oils and fats by round washing, the panel plate 10a of the oil and fat content capturing member 10 can be removed from the hood portion 1 and washed with a sink or the like.

≪Configuration of oil and fat content capturing member according to the second embodiment≫
FIG. 5 is a perspective view showing an oil and fat content capturing member according to the second embodiment, and FIG. 6 is a longitudinal side view showing a range hood provided with the oil and fat content capturing member according to the second embodiment.
In addition, the range hood A-1 which concerns on this embodiment is the inflow shape of the opening of the connection port 5-1 of the hood part 1 and the connection port 8-1 of the hood cover 6, and the exhaust box 2a from this connection port 5-1. In the components other than changing the convex shape of the waste gas contact convex portion 10b-1 of the oil and fat content capturing member 10-1 arranged on the panel plate 10a so as to face in the direction of the space N, it is described above. Since it is basically the same as that of the embodiment, the same components are denoted by the same reference numerals, and redundant description is omitted.
That is, as shown in FIGS. 5 and 6, the waste gas contact convex portion 10 b-1 protrudes from the panel plate 10 a along the opening shape of the communication port 5-1 drilled in a substantially elliptical shape in plan view. It is formed in a substantially downward U-shape (substantially dome shape).
And this waste gas contact convex part 10b-1 is provided with the fastening edge part 29 bend | folded outwardly by the lower-end periphery of the open | released opening, and suitable fastening means for spot welding, screwing, etc. to the panel board 10a It is formed so that it can be attached by.

FIG. 7: is a vertical side view which shows other embodiment of the range hood provided with the fat and oil content capture member which concerns on 1st Embodiment.
In addition, as shown in FIG. 7, the range hood A-2 according to this embodiment is such that the capture space M gradually narrows from the suction gap S side to the connection port 5 (connection port 8) side. In the components other than the top plate 6a of the hood cover 6 being formed to be inclined downward, it is basically the same as the range hood A provided with the oil / fat content capturing member 10 according to the first embodiment described above. The same reference numerals are assigned to the same components, and redundant description is omitted.
That is, the top plate 6a of the hood cover 6 is formed so as to be gradually narrower from the suction gap S side to the communication port 5 (connection port 8) side with the panel plate 10a of the oil and fat capturing member 10. ing. As a result, the capture space M in which the waste gas G sucked and collected from the suction gap S into the capture space M flows toward the communication port 5 gradually becomes narrower from the suction gap S side to the communication port 5 side. I am doing so.

According to the range hood A-2 configured in this way, when the waste gas G sucked and collected from the suction gap S into the capture space M flows toward the communication port 5, the flow of the waste gas G Is accelerated as it approaches the contact port 5.
As a result, the waste gas G is converted into a flow in a substantially perpendicular direction toward the inflow space N of the blower unit 2 while vigorously contacting the convex outer peripheral surface of the waste gas contact convex portion 10b. The flow when flowing into the inflow space N is further accelerated by the flow path R secured between the communication port 5 (connection port 8). The oil and fat contained in the waste gas G is attached to the convex outer peripheral surface of the waste gas contact convex portion 10b vigorously and captured by the greater inertia force generated at this time. Therefore, the fats and oils can be efficiently captured and recovered by the contact with the waste gas contact convex portion 10b and the greater inertia force generated at this time.

≪Configuration of oil and fat content capturing member according to the third embodiment≫
FIG. 8: is a vertical side view which shows the range hood provided with the oil-fat content capture member which concerns on 3rd Embodiment. Here, description will be made with reference to FIG. 3 as appropriate.
In addition, as shown in FIG. 8, the range hood A-3 which concerns on this embodiment makes the hood cover 6 support the panel board 10a of the fat and oil content capture member 10-2 which concerns on 3rd Embodiment in the capture space M. In addition, the constituent elements other than the capture opening M provided with the well-known current plate 30 in the downward opening of the capture space M to secure the suction gap S between the peripheral edge 9 of the downward opening are described in the first embodiment. Since the same component as that of the range hood A provided with the oil / fat content capturing member 10 is basically the same, the same components are denoted by the same reference numerals, and redundant description is omitted.
That is, the oil and fat content capturing member 10-2 is formed in a plan view shape in which the panel plate 10 a shown in FIG. 3 is aligned with the opening shape of the communication port 5, and is formed to be about two times larger than the opening area of the communication port 5. Thus, the oil tray 10a-2 is obtained. And it is set as the structure provided with the waste gas contact convex part 10b which protrudes in the substantially convex shape from the oil tray 10a-2 in the position which faces the inflow space N of the exhaust box 2a from the connection port 5. FIG.
Thereby, like the range hoods A, A-1 and A-2 of the respective embodiments described above, the rectifying plate 30 provided so as to secure the suction gap S with the downward opening peripheral edge 9 of the capture space M is provided. Without the oil recovery window 26 or the oil tray 27, the oil / fat content capturing member 10-2 itself is attached to the convex outer peripheral surface of the waste gas contact convex part 10b, and the oil / fat content captured is captured in the oil tray 10a-2. It tries to collect.

  As shown in FIG. 8, the oil tray 10a-2 and the current plate 30 are supported on the hood cover 6 by using the support member 16 and the engagement / disengagement member 17 as described above. I am trying to get it.

≪Configuration of oil and fat content capturing member according to the fourth embodiment≫
FIG. 9: is a vertical side view which shows the range hood provided with the fat and oil content capture member which concerns on 4th Embodiment, and FIG. 10 is a perspective view which shows the fat and oil content capture member which concerns on 4th Embodiment.
Note that the range hood A-4 according to this embodiment has a protruding end that faces the inflow space N of the waste gas contact convex portion 10b-2 having the sealed internal space 31, as shown in FIGS. In the components other than the surface provided with the through-hole 32, the same reference numerals are given to the same components because they are basically the same as the range hood A provided with the oil and fat content capturing member 10 according to the first embodiment described above. A duplicate description will be omitted.
That is, as shown in FIGS. 9 and 10, the waste gas contact convex portion 10 b-2 has innumerable through holes 32 in a grid pattern on the projecting end face facing the inflow space N. And it is set as the structure in which the fibrous sound-absorbing material 33 was contained in the internal space 31 used as a resonance chamber.

As described above, the projecting end face facing the inflow space N of the waste gas contact convex portion 10b-2 is provided with innumerable through holes 32, and the fibrous sound absorbing material 33 is provided in the internal space 31 serving as a resonance chamber. According to the range hood A-4 provided with the oil / fat content capturing member 10-3, in addition to the capturing action in which the oil / fat content is captured and recovered by the change of the flow direction by the contact with the waste gas G as in the above-described embodiment. Thus, noise such as wind noise generated in the exhaust box 2a of the blower unit 2, for example, the flow of waste gas G flowing into the inflow space N of the exhaust box 2a from the communication port 5 of the hood portion 1 in the inflow space N When waste gas G is sucked into the fan casing 11 from the suction port 15 of the fan casing 11 in which the exhaust fan 13 such as a sirocco fan is accommodated. The noise generated in the inflow space N due to the generated air resistance or the like is directed toward the wind path of the waste gas G flowing from the capture space M through the connection port 5 (connection port 8) toward the suction port 15 of the fan casing 11. The sound absorbing effect of absorbing sound is obtained by the infinite number of through holes 32 and the internal space 31 that are opened.
That is, the noise of the resonance frequency is incident on the internal space 31 that becomes the resonance chamber of the waste gas contact convex portion 10b-2, and the air in the through hole 32 that becomes the neck of the resonator vibrates vigorously and is absorbed by friction loss. .
Thereby, in addition to the capture action in the range hoods A, A-1, A-2, and A-3 of the above-described embodiments that capture and recover the oil and fat contained in the waste gas G, the exhaust box 2a The range hood A-4 also has a sound absorbing function capable of greatly reducing noise such as wind noise generated in the above.

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 gist of the present invention described in claims 1 to 5. However, it is included in the present invention.
For example, the oil and fat content capturing member has a shape in plan view that is slightly larger than the opening peripheral shape (opening area) of the communication port 5, and contacts the convex outer peripheral surface with the waste gas G whose flow direction has been changed. The waste gas contact convex portion formed at such a height as to secure a gap for flowing in the direction 5 toward the top plate 6a of the hood cover 6 is provided on the panel plate 10a and the oil tray 10a-2. It can be set as the structure provided.
In addition, the convex outer peripheral surface of the waste gas contact convex portion can be provided with a tongue-like or convex waste gas contact protrusion that is orthogonal (crossed) to the flow direction of the waste gas G. Thereby, the contact effect with the waste gas G can be enhanced, and the oil and fat capture efficiency by the inertial force (inertial resistance) generated at this time can be further improved.

It is a vertical side view which shows the range hood provided with the fat and oil content capture member which concerns on 1st Embodiment. It is a cross-sectional plan view of the same range hood. It is a perspective view which shows the fat and oil content capture member which concerns on 1st Embodiment. It is the perspective view and front view which show an engagement / disengagement member. It is a perspective view which shows the fat and oil content capture member which concerns on 2nd Embodiment. It is a vertical side view which shows the range hood provided with the fat and oil content capture member which concerns on 2nd Embodiment. It is a vertical side view which shows other embodiment of the cooker hood provided with the fat and oil content capture member which concerns on 1st Embodiment. It is a vertical side view which shows the range hood provided with the fat and oil content capture member which concerns on 3rd Embodiment. It is a vertical side view which shows the range hood provided with the fat and oil content capture member which concerns on 4th Embodiment. It is a perspective view which shows the fat and oil content capture member which concerns on 4th Embodiment which has a sound-absorbing effect | action.

Explanation of symbols

A, A-1, A-2, A-3, A-4 Range hood 1 Hood 1a Top plate 2 Blower unit 2a Exhaust box 2b Exhaust device 3 Exhaust duct 5 Connection port 6 Hood cover 8 Connection port 9 Downward opening peripheral edge 10, 10-1, 10-2, 10-3 Oil and fat content capturing member 10a Panel plate 10a-2 Oil tray 10b, 10b-1, 10b-2 Waste gas contact convex portion 15 Suction port 31 Internal space (resonance chamber)
32 Through-hole S Suction gap M Capture space N Inflow space G Waste gas

Claims (5)

A hood having a suction gap along the opening periphery of the capture space that opens downward;
A blower unit installed on the hood portion in communication with the capture space through a communication port opened in the hood portion, and
A range hood configured to exhaust waste gas sucked and collected in the capture space from the suction gap to the outside through an exhaust duct connected to the blower unit from the communication port,
An oil / fat content capturing member that changes the flow direction by contacting the waste gas flowing through the capture space from the suction gap toward the communication port and captures the oil / fat from the waste gas, A range hood characterized in that it is provided perpendicular to the flow direction. The oil and fat content capturing member includes a waste gas contact convex portion that faces the inside of the blower unit from the communication port,
The waste gas contact convex portion has a shape in plan view along the opening edge shape of the communication port, and is large enough to secure a flow path for accelerating the flow of the waste gas between the opening periphery of the communication port. The range hood according to claim 1, wherein the range hood is formed in a convex shape having a thickness. The fat and oil content capturing member is disposed in the downward opening portion of the capture space, and a panel plate formed in a substantially flat shape with a size to ensure the suction gap between the downward opening peripheral edge and ,
The said waste gas contact convex part currently formed in the substantially convex shape in the site | part corresponding to the said connection port of this panel board, The range hood of Claim 1 or Claim 2 characterized by the above-mentioned. .   The range hood according to any one of claims 1 to 3, wherein the capture space is gradually narrowed from the suction gap side to the communication port side.   3. The waste gas contact convex portion is formed in a hollow shape having a sealed internal space, and has a through hole on a projecting end face facing the blower unit. The range hood according to any one of claims 4 to 5.

Images