JP6263561B2 - Range food - Google Patents

Description

  The present invention relates to a range hood having a bell mouth provided at a suction port of a blower provided with a fan casing of a ventilation device.

Conventionally, a centrifugal blower such as a sirocco fan or a turbo fan is often used in a ventilator such as a range hood for collecting and exhausting or purifying oily smoke generated by cooking. And the parts called a bell mouth are attached to the suction part of a fan casing in the suction inlet of these centrifugal blowers, and the suction inlet is formed. If a ventilation device such as a range hood is used for a while, oil will also adhere to the impeller of the centrifugal blower. It is necessary to remove it.
For example, in Patent Document 1, in a range hood, a bell mouth mounting structure in a fan casing that is simple and inexpensive in pre-work and post-work such as inspection, replacement, repair, and cleaning of a fan casing, etc. In order to provide a bell mouth, a bell mouth attaching / detaching structure comprising a positioning engaging portion and a screw engaging portion for screwing has been proposed.

Utility Model Registration No. 3015656

  However, in the bell mouth attaching / detaching structure described in Patent Document 1, the bell mouth is positioned and screwed at the screwed portion, so the ventilation fan such as a range hood is installed at a high place. Handling was difficult due to poor workability.

  Therefore, the present invention has been made in view of the above problems, and the object of the present invention is more even in an environment with poor workability installed at a high place such as a blower of a ventilation device such as a range hood. An object of the present invention is to provide a range hood having a bell mouth with improved workability so that work can be easily performed.

In order to solve the above-mentioned problem, a fan casing is provided at the top of the hood, a blower having a suction port, an oil panel that forms the inner surface of the hood, and an oil panel that is detachably attached to the suction port. A bell hood, wherein the bell mouth has an inner peripheral portion having a bell mouth shape, an outer peripheral portion formed so as to continuously rise from the inner peripheral portion and have a height, and an outer peripheral portion A flat surface continuously formed in a flat state from the lower end to the inner peripheral portion, and when the bell mouth is attached to the suction port, the surface forming the oil panel and the inner end from the lower end of the outer peripheral portion The flat surface continuously formed in a flat state on the peripheral portion is substantially the same surface, and the flat surface is a concave shape having an upward opening formed by the inner peripheral portion and the outer peripheral portion. The lower surface of the part, the outer periphery is cylindrical A has an engaging portion comprising a recessed groove to the inner periphery side in the cylindrical shape, the plurality includes range hood engaging piece that engages with the engaging portion is provided.
In addition, a fan having a fan casing at the top of the hood and having a suction port, a flue formed around the suction port, and a bell mouth provided detachably on the suction port separately from the flue, The bell mouth includes an inner peripheral portion having a bell mouth shape, an outer peripheral portion formed so as to continuously rise from the inner peripheral portion and having a height, and an inner periphery from a lower end of the outer peripheral portion. A flat surface continuously formed in a flat state on the part, and when the bell mouth is attached to the suction port, the surface forming the flue and the flat from the lower end of the outer peripheral part to the inner peripheral part The flat surface continuously formed in the state forms almost the same surface, and the flat surface is the lower surface of the concave portion having the upward opening formed by the inner peripheral portion and the outer peripheral portion. Yes, the outer periphery has a cylindrical shape, and the groove is recessed toward the inner periphery in the cylindrical shape. Has Ranaru engaging portion, a plurality comprises range hood engaging piece that engages with the engaging portion is provided.
According to this, since the bell mouth can be attached and detached by a simple operation, the bell can be easily operated even in an environment with poor workability installed at a high place such as a blower of a ventilation device, and the workability is improved. A range hood having a mouse can be provided, and there is no obstacle to the suction of oil or the like, and smooth suction of oil smoke or the like is possible.

Furthermore, when the bell mouth is attached to the suction port, the end portion of the inner peripheral portion is positioned on the inner peripheral side from the edge portion of the suction port, and the end portion of the outer peripheral portion is positioned on the outer peripheral side from the edge portion of the suction port. This may be a feature.
According to this, the oil dripped from the edge part of a suction inlet can be received, and the bell mouth which served as the oil receiver can be provided.

Further, the edge of the suction port may be bent toward the oil receiving portion formed flat on the inner peripheral portion.
According to this,

Further, the outer peripheral portion may have a cylindrical shape, and the groove as the engaging portion may be formed by making a round around the side surface of the cylinder.
According to this, since there is no directivity in attaching the bell mouth, it is not necessary to align the direction of the bell mouth when attaching.

Furthermore, the engagement piece may be located on the outer peripheral side from the edge of the suction port when the bell mouth is removed from the suction port.
According to this, the engagement piece does not become an obstacle when removing the fan of the blower.

Furthermore, when the bell mouth is attached to the suction port, the top portion on the innermost peripheral side in the groove of the engaging portion may be located on the outer peripheral side from the edge of the suction port.
According to this, the top part on the innermost peripheral side in the groove of the engaging part is positioned on the outer peripheral side from the edge part of the suction port, and oil dripping from the edge part of the suction port adheres to the outer peripheral part. There is no.

Further, the end portion of the inner peripheral portion and / or the end portion of the outer peripheral portion may be hemmed.
According to this, since the force is applied so that the bell mouth is directly touched and pulled out by the hand when the bell mouth is removed, the hand can be prevented from being damaged by hemming the end face.

  As described above, according to the present invention, it is possible to easily perform work even in an environment with poor workability installed at a high place such as a blower of a range hood, and the bell mouth improved in workability. A range hood can be provided.

The 6th page figure of the range hood in the 1st example concerning the present invention. (A) Front view, (B) Left side view, (C) Right side view, (D) Rear view, (E) Plan view, (F) Bottom view, (G) Bottom view with the current plate removed. The perspective view which looked at the range hood in the 1st example concerning the present invention from the lower left. (A) When the current plate is attached, (B) When the current plate is removed. The partial expansion perspective view which looked at the range hood in the 1st example concerning the present invention from the bottom. (A) State where bell mouth is removed, (B) State where bell mouth is attached. BRIEF DESCRIPTION OF THE DRAWINGS (A) Top view, (B) Front view, (C) Bottom view of bell mouth in 1st Example which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS (A) The perspective view seen from the upper direction of the bell mouth in 1st Example which concerns on this invention, (B) The perspective view seen from the downward direction. Sectional drawing which expanded the engagement piece vicinity of the range hood in 1st Example which concerns on this invention (cross section in SS cross section in FIG. 1).

Embodiments according to the present invention will be described below with reference to the drawings.
<First Example>
FIG. 1 is a front view of a range hood 1 according to the first embodiment of the present invention, and FIG. 2 is a perspective view of the range hood 1 as viewed from the lower left. The range hood 1 is provided above the cooker, and includes a thin flat hood 2 at the bottom of the range hood 1 for capturing air containing oily smoke or water vapor generated by cooking. The hood 2 is provided with a current plate 5 so as to form a gap with the inner peripheral edge of the hood 2. A blower 21 having a fan casing (not shown) is provided on the upper portion of the hood 2, and a suction port 22 of the blower 21 is provided so as to coincide with an opening on the upper surface of the hood 2.

Then, the air captured by the hood 2 rides on the air flow generated from the lower side to the upper side generated by the blower 21 and is sucked from the gap between the hood 2 and the current plate 5, and the sucked air is rectified. It passes through the space between the plate 5 and the hood inner surface 30, is guided to the flue 31 formed around the suction port 22, and heads toward the blower 21 from the suction port 22. The air directed toward the blower 21 is discharged to the outside or the like by an exhaust duct (not shown) connected to the exhaust port 3 provided in the blower box 4 after removing oily smoke and the like with a filter or the like.
The hood 2 is not limited to a thin and flat shape, and may be a hood having a large capture space and a thickness in the vertical direction, and is not limited to the presence of the rectifying plate 5. .

  Further, the inlet 22 is provided with a bell mouth 10 having a bell mouth shape at a portion in contact with the air flow in order to guide the air so as to be sucked smoothly with low resistance.

  FIG. 3 shows a state in which the bell mouth 10 is detached from the suction port 22 and a state in which the bell mouth 10 is attached in order to show that the bell mouth 10 is detachably provided. In the drawing, the oil panel forming the hood inner surface 30 is omitted. Since the bell mouth 10 and the blower 21 that guide air so as to suck air smoothly at the suction port 22 are air passages including oil smoke and the like, oil often adheres to them. In order to remove and clean the fan, it is detachably provided. In order to reliably send air into the blower 21, the inner diameter of the bell mouth 10 on the suction port 22 side is formed smaller than the inner diameter of the fan of the blower 21, and the suction port 22 is formed larger than the outer diameter of the fan. Has been. Therefore, when removing the fan of the blower 21, the fan of the blower 21 can be removed from the suction port 22 by removing the bell mouth 10. In addition, although the fan of the air blower 21 to show in figure is a centrifugal fan with a high static pressure, it is not limited to this in particular, An axial flow fan may be sufficient.

  Engagement pieces 40 are provided at several places (three places in the present embodiment) around the suction port 22, and the engagement pieces 40 are in the radial direction and the center direction of the suction port 22 as will be described later. The bell mouth 10 can be held from the surroundings. Such a structure can be mounted in a ventilator such as the range hood 1 by pressing the bell mouth 10 toward the inlet 22, that is, by pushing the bell mouth 10 toward the blower 21 at the back. It is an attachment structure which can be removed by pulling out from the suction port 22 toward the cooker or the user at the lower side. According to this mounting structure, the bell mouth can be attached and detached with a simple operation, so that the work can be easily performed even in a poor workability environment installed at a high place such as a blower of a ventilation device. A mounting structure for a bell mouth can be provided.

  In addition, the ventilator has a range hood, a device provided above the table with a ventilation function and a lighting function, a device such as a bathroom ventilation fan, a bathroom ventilation dryer, a ceiling ventilation fan, and other ventilation functions. Includes ventilator.

  4 and 5 show a bell mouth 10 in the first embodiment according to the present invention. The bell mouth 10 is formed continuously with the inner peripheral portion 11 having a bell mouth shape and the inner peripheral portion 11, and is recessed toward the inner peripheral portion 11 side having elasticity in the radial direction and engaging with the engaging piece 40. And at least an outer peripheral portion 12 having an engaging portion 13 made of a groove. The inner peripheral portion 11 can be guided so as to suck air smoothly by having a bell mouth shape so that the inner peripheral portion 11 is widened downward and narrowed upward when attached to the suction port 22. The shape of the bell mouth is not limited to the illustrated shape, and is appropriately determined based on the relationship between the suction port and the blower. In addition, the vicinity of the lower end 14 of the outer peripheral part 12 of the inner peripheral part 11 is formed flat, and this part is used as the oil receiving part 15 for receiving the oil dripped from the edge part of a suction inlet. .

  The outer peripheral part 12 has the shape of the side surface of the cylinder formed so that it may become perpendicular | vertical with respect to the suction surface of the suction inlet 22 so that it may not become obstructive at the time of attachment or detachment. However, the present invention is not limited to this, and it may be inclined from the vertical to the extent that it does not get in the way of attachment / detachment, and may be a prismatic shape instead of a cylindrical shape as long as the shape matches the shape of the inlet. May be. Moreover, although the side surface of the outer peripheral part 12 which has a cylindrical shape has the same height in any, it is not limited to this, A part may be formed higher (or lower) than another part. The outer peripheral portion 12 is formed continuously with the inner peripheral portion 11 and is typically manufactured by integrally molding metal, but is not limited to this. For example, the outer peripheral portion and the inner peripheral portion are separately formed. You may produce by connecting continuously.

  Moreover, the outer peripheral part 12 is provided with the groove | channel recessed toward the inner peripheral part 11 side, ie, a cylindrical side surface inside. This groove is referred to as an engagement portion 13 that has elasticity in the radial direction and engages with the engagement piece 40. The engaging portion 13 is formed at a position equidistant from the lower end 14 and the upper end of the outer peripheral portion, but is not limited to this, and may be at any position on the cylindrical side surface of the outer peripheral portion 12. The groove of the engaging portion 13 is appropriately formed as a concave shape so as to engage with the convex shape of the engaging piece 40 that is elastic in the radial direction, that is, biased toward the center of the suction port 22.

  According to such an attachment structure, the attachment structure on the bell mouth 10 side does not have a complicated mechanism such as a movable part, and has only a groove, so that it can be removed and cleaned easily.

  Further, the groove of the engaging portion 13 is formed to make a round on the cylindrical side surface of the outer peripheral portion 12. Thereby, since there is no directivity at the time of attachment of the bell mouth 10, the direction alignment of the bell mouth 10 becomes unnecessary at the time of attachment. Needless to say, it is not limited to being formed around a circle and may be formed partially.

  FIG. 6 is a cross-sectional view taken along the line S-S in FIG. 1, in which the engagement piece 40 of the range hood 1 is engaged with the engagement portion 13. The bell mouth 10 is arranged around the suction port 22 and guides the bell mouth shape of the inner peripheral portion 11 so as to suck air smoothly. When the bell mouth 10 is attached to the suction port 22, the end 16 of the inner peripheral portion 11 is on the inner peripheral side, that is, the suction side from the edge 23 of the suction port 22, that is, the end 23 on the suction port side of the fan casing 20. It is located from the center of the mouth 22. Further, the diameter of the end portion 16 of the inner peripheral portion 11 of the bell mouth 10 is smaller than the inner diameter of the fan of the blower 21. Thereby, while being able to send air reliably in the inside of the air blower 21, the oil dripped from the edge part 23 of the suction inlet 22 can be received, and the bellmouth 10 which served as the oil receiver can be provided.

  The inner diameter of the end 23 on the suction port side of the fan casing 20 is larger than the outer diameter of the fan of the blower 21 that is circular in a bottom view. Further, the engagement piece 40 is located on the outer peripheral side from the edge 23 of the suction port 22 when the bell mouth 10 is removed from the suction port 22. According to this, when removing the fan of the blower 21 from the suction port 22, the engagement piece 40 does not become an obstacle, and the blower 21 can be easily removed from the suction port 22 and cleaned.

  The engagement piece 40 is shaped as shown in the figure by deforming the leaf spring, and is attached to the fan casing or the flue so as to be urged in the radial direction of the suction port 22 toward the center side. The protrusion of the engagement piece 40 that engages with the engagement portion 13 has a shape that fits into the groove of the engagement portion 13, and fits into this groove when the bell mouth 10 is attached. The protrusion of the engagement piece 40 is formed, and the surface of the engagement piece 40 that is lower than the portion that protrudes most toward the bell mouth side is more than the surface that is higher than the portion that protrudes to the innermost peripheral side. The surface that is gently inclined with respect to the surface of the outer peripheral portion 12, and conversely, the surface above the portion that protrudes to the innermost peripheral side is an angle close to perpendicular to the surface of the outer peripheral portion 12 of the bell mouth 10. I am doing. In the present embodiment, the bell mouth 10 is provided at the opening of the flue 31, but is not limited to this, and the opening of the oil panel that forms the inner surface of the hood without the flue. May be provided.

  Thus, when the bell mouth 10 is attached, it can be attached by pressing it against the blower 21 side with a relatively small force. Conversely, when the bell mouth 10 is removed, a relatively large force is required. It is possible to prevent the bell mouth from falling naturally without adding. The engagement piece 40 is not limited to the shape shown in the figure, and has any shape as long as it has elasticity in the radial direction, urges toward the center of the suction port 22 and engages with the engagement portion 13. Also good. The number of the engagement pieces 40 is not limited, but it is preferable to provide three engagement pieces so as to form 120 degrees from the center of the suction port.

  Moreover, when the bell mouth 10 is attached to the suction port 22, the top portion 18 on the innermost peripheral side in the groove of the engaging portion 13 is positioned on the outer peripheral side from the edge portion 23 of the suction port 22. According to this, the oil dripping from the edge part 23 of the suction inlet 22 does not adhere to the outer peripheral part 12. Further, when the bell mouth 10 is attached to the suction port 22, the lower end 14 of the outer peripheral portion 12 does not protrude from the hood inner surface 30 or the flue 31, and the surface forming the flue 31 and the outer peripheral portion 12. The surface formed continuously from the lower end 14 to the inner peripheral portion 11 (the lower surface of the oil receiving portion 15) forms substantially the same surface. According to this, since there is no part which protrudes in the air flow path on the inner surface of the hood 2, there is no obstacle to the suction of oil and the like, and the smooth suction of oil smoke can be performed.

  The end 16 of the inner periphery 11 and the end 17 of the outer periphery 12 are preferably hemmed. According to this, the bell mouth 10 applies a force so that it is pulled out by touching it directly with the hand when it is removed, so that the hand can be prevented from being damaged by hemming the end, and the strength of the end is also improved. .

  In addition, this invention is not limited to the illustrated Example, The implementation by the structure of the range which does not deviate from the content described in each item of a claim is possible. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations. Therefore, the description which limited the shape, the material, etc. disclosed above is exemplary for easy understanding of the present invention, and does not limit the present invention.

DESCRIPTION OF SYMBOLS 1 Range hood 2 Hood 3 Exhaust port 4 Blower box 5 Current plate 10 Bell mouth 11 Inner peripheral part 12 Outer peripheral part 13 Engagement part (groove)
DESCRIPTION OF SYMBOLS 14 Lower end of outer peripheral part 15 Oil receiving part 16 End part of inner peripheral part 17 End part of outer peripheral part 18 Top part 20 Fan casing 21 Blower 22 Suction port 23 Edge of suction port (end part of fan casing)
30 Hood inner surface 31 Flue 40 Engagement piece

Claims (8)

A blower having a fan casing at the top of the hood and having a suction port;
An oil panel forming the inner surface of the hood;
A bell mouth provided separately from the oil panel so as to be detachable from the suction port;
A range hood comprising:
The bell mouth includes an inner peripheral portion having a bell mouth shape, an outer peripheral portion formed so as to continuously rise from the inner peripheral portion and having a height, and flat from the lower end of the outer peripheral portion to the inner peripheral portion. A flat surface continuously formed in a state,
When the bell mouth is attached to the suction port, a surface forming the oil panel and a flat surface continuously formed in a flat state from the lower end of the outer peripheral portion to the inner peripheral portion are substantially Forming the same surface, the flat surface is a lower surface of a concave portion having an upward opening formed by the inner peripheral portion and the outer peripheral portion,
The outer peripheral portion has a cylindrical shape, and has an engaging portion made of a groove recessed toward the inner peripheral portion side in the cylindrical shape,
A plurality of engagement pieces that engage with the engagement portion;
Range food. A blower having a fan casing at the top of the hood and having a suction port;
A flue formed around the inlet;
A bell mouth provided separately from the flue so as to be detachable from the suction port;
A range hood comprising:
The bell mouth includes an inner peripheral portion having a bell mouth shape, an outer peripheral portion formed so as to continuously rise from the inner peripheral portion and having a height, and flat from the lower end of the outer peripheral portion to the inner peripheral portion. A flat surface continuously formed in a state,
When the bell mouth is attached to the suction port, a surface forming the flue and a flat surface continuously formed in a flat state from the lower end of the outer peripheral portion to the inner peripheral portion are substantially Forming the same surface, the flat surface is a lower surface of a concave portion having an upward opening formed by the inner peripheral portion and the outer peripheral portion,
The outer peripheral portion has a cylindrical shape, and has an engaging portion made of a groove recessed toward the inner peripheral portion side in the cylindrical shape,
A plurality of engagement pieces that engage with the engagement portion;

Range food. When the bell mouth is attached to the suction port, the end portion of the inner peripheral portion is located on the inner peripheral side from the edge portion of the suction port, and the end portion of the outer peripheral portion is outer periphery than the edge portion of the suction port. range hood according to any one of claims 1 to 2, characterized in that located on the side. The range hood according to any one of claims 1 to 3 , wherein an edge portion of the suction port is bent toward a flat oil receiving portion of the inner peripheral portion. The range hood according to any one of claims 1 to 4 , wherein the outer peripheral portion has a cylindrical shape, and the groove serving as the engaging portion is formed around the side surface of the cylinder. The range according to any one of claims 1 to 5 , wherein the engagement piece is located on an outer peripheral side from an edge of the suction port when the bell mouth is removed from the suction port. hood. The top portion on the innermost peripheral side in the groove of the engaging portion is located on the outer peripheral side from the edge portion of the suction port when the bell mouth is attached to the suction port. The range hood according to claim 6 . The range hood according to any one of claims 1 to 7 , wherein an end portion of the inner peripheral portion and / or an end portion of the outer peripheral portion is hemmed.