JP4221082B2 - Boots type range hood fan - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a boot-type range hood fan, and more particularly to a boot-type range hood fan that prevents waste gas from leaking into a room and improves waste gas capture efficiency.
[0002]
[Prior art]
There is a type of flat range hood fan called a current plate guide system.
In this rectifying plate guide method, a filter is detachably provided at a position one step deeper from the open portion of the hood body, and a rectifying plate is provided on the upstream side of the filter to secure a suction space between the open edge of the hood body. It is arranged to concentrate the suction force around the rectifying plate to prevent air leakage from the open edge of the hood body into the room and improve the waste gas capture efficiency.
A traditional range hood fan that does not use a rectifying plate with a filter installed in a position one step deeper from the open part of the hood body, securing a waste gas capture space in front of it, and a fan installed behind the filter, Because the blower is located just behind the center of the filter, the suction force does not effectively act on the waste gas that rises from the cooking utensil and diffuses in all directions as it rises. Air leaks into the room from the open edge. This is solved by the guide action by the current plate.
[0003]
By the way, not only the flat range hood fan described above, but also a boot-type range hood fan with deep pockets, a rectifying plate is disposed in front of the blower in consideration of a case where a large amount of smoke is generated by grilled fish or the like. Is preferred.
When a baffle plate is provided, the suction force is effective for the waste gas that tends to leak into the room from the rear side of the side of the hood without effectively acting on the suction as it rises along the partition plate. It becomes possible to act on and attract.
At this time, as a matter of fact, a large amount of oils and fats adheres to the current plate and flows down along the surface, so that the recovery means is required.
Although it is proposed to support the lower end of the rectifying plate with the same structure as the U-shaped filter bar facing upward as a longitudinal section for supporting the filter as a collecting means, this bar is also rectified even if it is manufactured exclusively for the rectifying plate Since it is formed to have an inner width dimension that is slightly larger than the thickness of the plate, the oil and fat overflows over a long period of use, and drops down to contaminate cooking utensils and the like.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described conventional circumstances, and the technical problem is that the oil and fat components flowing down through the rectifying plate provided in front of the blower to prevent leakage of waste gas to the outside of the hood body are discarded. A structure that does not become an obstacle to gas rise. It is received with a simple oil receiving and partitioning structure, and the oil and fat flowing down from the current plate is quickly guided to the rear by the suction force of the suction space secured around the current plate. It is. Another technical problem is to discharge the oil and fat received by the oil receiving and partitioning structure by a discharging means that does not hinder the rise of waste gas.
Still another technical problem is to guide the oil and fat accumulated in the blower in a vertical state to the oil receiving and partitioning structure described above.
[0005]
The technical means taken in order to solve the above-mentioned object are a hood body whose front opening is covered with a front plate so as to be openable and closable, and a slant inclined upward in the hood body toward the front opening of the hood body. A range hood fan comprising: a partition plate provided; a blower disposed in a space in the hood body above the partition plate; and a rectifying plate disposed in front of the blower and forming a suction space therearound. The partition plate is formed with an extension portion extending continuously to the front plate side to the front of the lower end position of the current plate, and the suction space is formed between the extension portion and the inner surface of the hood body. In addition, an oil line that receives oil and fat dripping from the flow straightening plate and extends to an arbitrary surface of the circumferential surface of the hood body directly under the bell mouth is formed on the lower surface of the oil line. The outlet to the installed oil pack One or a plurality of oil drain holes are opened at each end portion where high pressure does not act except the part where the fan just faces the lower end of the fan casing body of the blower. The oil line faces the hole.
[0006]
[Action]
According to the technical means, the following effects are obtained.
For one thing, this boot type range hood fan receives all of the oil and fat dripped from the current plate and the blower with a partition plate made of an upwardly inclined surface facing the front plate side, thereby preventing downward dripping. In addition, the suction force of the waste gas suction space formed between the flow straightening plate and the partition plate gives a downward flow force to the oil and fat flowing down from the flow straightening plate to the partition plate, and the rear end side of the partition plate Promptly.
Further, the boot type range hood fan forms an oil line that receives the oil and fat dripping from the current plate and guides it toward the peripheral surface of the hood body directly under the bell mouth. Since this oil line should be shallow, oil and oil leaking from the mounting part with the rectifying plate and bell mouth can be transferred to the oil pack without the waste gas colliding and becoming a major obstacle that hinders its rise. And surely discharge.
Furthermore, this boot type range hood fan drains oil to the oil line from an oil drain hole opened in a low pressure area where the oil and fat stagnating in the fan casing is concentrated.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described.
1 to 3 show a first embodiment of the boot type range hood fan of the present invention, and FIGS. 4 to 6 show a second embodiment. First, the first embodiment will be described. Reference numeral A denotes the range hood fan.
[0008]
This boot-type range hood fan A is provided with a partition plate 3 that is inclined upward toward the front plate 2 at the middle and high parts of the hood body 1 whose front opening is covered with the front plate 2 so as to be opened and closed. The blower 4 is disposed at a position near the back of the space above the plate 3, the front panel 5 and the current plate 6 are disposed immediately before, and the filter 7 is assembled to the front panel 5 so that it can be inserted and removed.
[0009]
The partition plate 3 is fixed to the back surface 11 and both side surfaces 21 and 21 of the hood body 1 in a water-tight manner by means such as spot welding as in the conventional case, and the front edge is shown in FIG. Thus, the rectifying plate 6 disposed in front of the front panel 5 immediately before the blower 4 is continuously extended to the front rather than on the lower end extension vertical line.
[0010]
The front panel 5 is provided with support frames 15 and 15 having a U-shaped support frame 15 and 15 which are horizontally disposed at the position of the partition plate 3 and the top surface 31 of the hood body 1 which are close to each other immediately before the blower 4. The upper edge is supported so that it can be inserted and removed, and the space above the partition plate 3 is divided into a space on the blower 4 side and a space in front thereof.
[0011]
The filter 7 is provided at the upper edge and the lower edge of the mounting opening 25 that is opened in the front panel 5 portion just opposite to the air inlet 34 of the blower 4 with an area larger than that of the air inlet 34. 17 and 17 are supported so as to be removable, so as to close the mounting opening 25.
[0012]
The lower support frame 15 is provided with oil drain holes 15a having an appropriate length extending from the bottom surface to the rear surface portion at appropriate intervals in the length direction.
[0013]
The rectifying plate 6 has a slightly smaller area than the front panel 5, and the lower end side is mounted on a pair of left and right receiving arms 8, 8 provided on the surface of the lower part of the front panel 5. Then, a waste gas suction space is installed between the periphery and the extension portion 13 and the inner surface of the hood body 1 by attaching the screws 100 to a pair of left and right mounting arms 9 fixed to the upper portion of the front panel 5. X is formed.
[0014]
Reference numeral 23 denotes an oil line formed on the partition plate 3, and the oil line 23 is arranged so that the expanded portion is positioned forward of the lower support frame 15 as shown in FIGS. 1 to 3. It is a guide recess that is formed by pressing when partition plate 3 is formed with a substantially funnel shape in plan view, and a discharge port 23a is opened at a rearwardly narrowed portion located near rear surface 11 of hood body 1, The discharge port 23a is made to face the oil pack 10 provided on the back surface 11 so as to be detachable.
The oil line 23 is routed directly under the bell mouth 24 and the fan casing 14, and the expanded portion is wider than the oil drain holes 15a on both sides and discharged from all the oil drain holes 15a. The oil and fat content is allowed to flow down to the discharge port 23a.
Reference numeral 33 denotes a rising piece at the front edge of the partition plate 3, which is formed with a short dimension.
[0015]
The blower 4 is a small sirocco fan, and is provided with an opening 44 on the front side plate 14b of the fan casing 14 manufactured by spot welding or caulking and fixing the left and right side plates 14b, 14b of the volute-shaped body portion 14a. A bell mouth 24 is attached to the opening 44 to form an air inlet 34, and a fan motor 54 having a fan mounting shaft (not shown) is rotatably mounted so as to close the opening 44 of the rear side plate 14b. A fan (sirocco fan) 64 is attached to a shaft (not shown).
[0016]
The fan casing 14 is formed by bending the mounting flange 14c outwardly from the upper edge of the body portion 14a and the upper edges of the side plates 14b, 14b to surround the discharge port 14d. By being attached to the top surface 31 of the body 1, it is installed so as to face in the vertical direction.
[0017]
Further, the fan casing 14 has an oil drain hole 74 in a low pressure area S1 that is out of the high pressure area S at the lower end portion of the body portion 14a.
[0018]
The high pressure area S is a portion where the fan 64 just faces the lower end portion of the trunk portion 14a, which is directly below the center of the volute, and high wind pressure acts in this portion in the centrifugal direction of the fan 64. One or a plurality of oil drain holes 74, 74 are formed in the low wind pressure areas S1, S1 on both sides where the high wind pressure does not act.
Of course, the oil drain holes 74 and 74 face the oil line 23.
[0019]
Although the low wind pressure area S1 has a slight difference depending on the size of the sirocco fan, each of the low wind pressure areas S1 is secured about 15 mm, and when there is one oil drain hole 74, for example, a triangle having a size of about 5 mm in the central portion, The holes are opened in a polygonal shape such as a quadrangle or a star shape, and in the case of a plurality of holes, about 2 to 3 are opened in the adjacent shape with the same shape or different shape.
The oil drain hole 74 may be formed in a cutout shape from the edge of the body portion 14a.
[0020]
In the boot-type range hood fan configured as described above, the suction force is concentrated in the waste gas suction space X around the rectifying plate 6 to suck the waste gas.
The oil and fat flowing down along the surface of the rectifying plate 6 is guided to the oil line 23, and the oil and fat flowing down along the surfaces of the filter 7 and the front panel 5 are also oil lines from the oil discharge holes 15 a of the support frame 15. The oil and fat components that are guided to 23 and sent to the inside without being removed by adsorption by the filter 7 and blown off by the fan 64 and adhered to the fan casing 14 are moved to the low pressure area S1 while avoiding the high pressure area S. Oil and fat discharged from the moving chopping oil through the oil drain hole 74 to the oil line 23 and overflowing from the gap of the mounting portion of the bell mouth 24 to the fan casing 14 can be received by the oil line 23.
And it concentrates on the discharge port 23a of a lower end, and is dripped at the oil pack 10 there.
In addition, the suction force of the waste gas suction space X formed between the rectifying plate 6 and the partition plate 3 is effectively used as a forcing force that pushes backward the oil and fat dropped from the rectifying plate 6 onto the partition plate 3. The oil and fat content is prevented from stagnation on the front side of the partition plate.
[0021]
Next, a second embodiment shown in FIGS. 4 to 6 will be described. This embodiment shows a filterless boot type range hood fan.
[0022]
In this embodiment, a hood body such as an upright piece 43 a of an L-shaped material 43 obtained by superposing a front panel 5 ′ attached to the fan casing 14 of the blower 4 on the upper surface of the extension portion 13 and the top surface 31 of the hood body 1. The bell mouth 24, which is separate from the front panel 5 ', is attached to the panel 5', and the extension 13 portion is attached to the front panel 5 'in the same manner as in the previous embodiment. A rectifying plate 6 that forms a waste gas suction space X is detachably attached to the inner surface of the hood body 1.
Reference numeral 35 denotes a bent flange for attaching the front panel 5 ′ to the top surface 31 of the hood body 1, and is bent at the upper edge or the upper edge and the left and right edges.
[0023]
【The invention's effect】
Since the present invention is configured as described above, it has the following advantages.
For example, the oil and fat that leaks from the blower or drops from the rectifying plate in front of the blower can be received by the partition plate so that it cannot be dropped downward. In addition, because the hood body peripheral surface (side plate and back plate) naturally constitutes a large-capacity oil reservoir by extending the partition plate to the front plate side, today's needs that require a long maintenance cycle An optimal boot-type range hood fan can be provided at a low price. In addition, the suction force of the waste gas suction space formed between the flow straightening plate and the partition plate gives a downward flow force to the oil and fat dripped from the flow straightening plate to the partition plate, and the rear end side of the partition plate Since the partition plate is gently inclined, the viscosity of the oil and fat becomes relatively high due to contaminants and stops at the dropping position and becomes an obstacle, which triggers the front end of the partition plate There is no risk of dripping onto the cooking utensil.
Also, when the grease leaking from the mounting portion of the bellmouth with grease dripping from the rectifying plate lead to any surface side of the hood body peripheral surface with an oil line, and from there to guide the oil pack The partition plate can be discharged to the outside without stagnation using the oil and fat flow-down body.Of course, the oil line may be shallow if it is formed in the partition plate, The waste gas does not collide and become a big obstacle that hinders its rise.
Furthermore, one or more oil drain holes are opened in both ends of the fan casing body at the lower end where the high pressure does not act, that is, in a low pressure area where the oil and fat content concentrates. Since the oil is guided to the oil line and discharged from there to the oil pack provided on the hood body, the oil and fat components stagnating in the fan casing are concentrated in one place by tilting the blower. As described above, the outlet portion of the blower is extremely bent to increase the pressure loss, and the exhaust efficiency is not deteriorated due to the length of the exhaust duct.
[0024]
Further, the embodiment of claim 1 includes a case where the oil line is not formed intentionally.
Since the partition plate 3 is continuously extended to the front plate 2 side, the triangular area on the partition plate 3 can be regarded as a large-capacity oil sump portion, and a long maintenance cycle is desired. It will be suitable for today's needs.
In the case of this embodiment, a drain plug that can be opened and closed as appropriate is provided in the rear lower end region of the side face 21 of the hood body 1 and recovered by an oil pan disposed at another location. It is.
[0025]
【The invention's effect】
Since the present invention is configured as described above, it has the following advantages.
(Claim 1) Oils and fats leaking from the blower or dripping from the rectifying plate in front of the blower can be received by the partition plate so that they cannot be dropped downward. In addition, because the hood body peripheral surface (side plate and back plate) naturally constitutes a large-capacity oil reservoir by extending the partition plate to the front plate side, today's needs that require a long maintenance cycle An optimal boot-type range hood fan can be provided at a low price.
In addition, the suction force of the waste gas suction space formed between the flow straightening plate and the partition plate gives a downward flow force to the oil and fat dripped from the flow straightening plate to the partition plate, and the rear end side of the partition plate Since the partition plate is gently inclined, the viscosity of the oil and fat becomes relatively high due to contaminants and stops at the dropping position and becomes an obstacle, which triggers the front end of the partition plate There is no risk of dripping onto the cooking utensil.
(Claim 2) Further, the oil and fat leaking from the mounting portion of the bell mouth together with the oil and fat dripping from the rectifying plate is guided near an arbitrary surface of the hood body by the oil line and guided to the oil pack from there. In this case, the partition plate can be used as a lowering body for oil and fat and discharged to the outside without stagnation. The good thing is that the waste gas does not collide and become a major obstacle that hinders its rise.
(Claim 3) Opening or collecting one or more oil drain holes one by one or both in the low-pressure area where the high pressure does not act in the lower end of the body part of the fan casing, that is, the oil and fat concentration. The oil and fat is led from the oil line to the oil line, and from there, it is discharged to the oil pack provided on the hood body, so the oil and fat that stagnates in the fan casing is concentrated in one place by tilting the blower As in the example, the outlet portion of the blower is extremely bent and the pressure loss is not increased, and the exhaust efficiency is not deteriorated by increasing the length of the exhaust duct.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view of a first embodiment.
FIG. 2 is a partial enlarged cross-sectional view of a main part.
FIG. 3 is an exploded perspective view showing a relationship among a partition plate, a front panel, a filter, and a current plate.
FIG. 4 is a partially cutaway side view of a second embodiment.
FIG. 5 is a partial enlarged cross-sectional view of a main part.
FIG. 6 is an exploded perspective view showing the relationship among a partition plate, a front panel, and a current plate.
[Explanation of symbols]
4: Blower 3: Partition plate 6: Rectifying plate 1: Hood body 13: Extension part X: Waste gas suction space 24: Bell mouth 11, 21: Hood body peripheral surface (back surface, side surface)
23: Oil line 10: Oil pack 14: Fan casing 23a: Discharge port 14a: Body 74: Oil drain hole 5: Front panel 5 ': Front panel

Claims (1)

A hood body that is covered with a front plate so that the front open portion can be opened and closed, a partition plate that is inclined obliquely upward in the hood body toward the front open portion of the hood body, and the hood above the partition plate A range hood fan comprising a blower arranged in a space inside the body and a current plate arranged in front of the blower and forming a suction space around the blower,
The partition plate, together with the up front of the lower end position of the current plate forms an extension portion that extends continuously in the front plate side, forming the suction space between the said extension portions the hood body surface, An oil line that receives oil and fat dripping from the rectifying plate and extends to an arbitrary surface of the hood body via the bell mouth is formed on the lower surface of the oil line. Open the outlet to the oil pack,
One or a plurality of oil drain holes are opened in each end portion where high pressure does not act except the part where the fans just face each other at the lower end of the fan casing body of the blower, and the oil line is formed in the oil line. boot-shaped range hood fan, characterized in that it is are to face.

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