JP2000074442A - Boot-type range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve working efficiency for assembling a distributing plate for preventing exhaust gas from lacking outside a hood body into a hood, and at the same time to avoid the local concentration of the weight of the distributing plate. SOLUTION: The weight of a front panel 5 for supporting a distributing plate 6 is dispersed and received by the stiffness of a hood body 1 and a partition board 3 being provided slantwise without concentrating stress. Also, fats and oils that adhere to the distributing plate 6 and the surface of the front panel 5 for flowing downward is received by the partition plate 3 and is guided backward through a connection part 43 of an erection part 33 for preventing dropping. The suction force of an exhaust gas suction space X being formed between the distributing plate 6 and the partition board 3 adds energy for flowing backward to the fats and oils that flow and drop from the distributing plate 6 to the partition board 3 for quickly flowing into the side of the rear end of the partition board 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boot-type range hood fan, and more particularly to a boot-type range hood fan for preventing leakage of waste gas into a room and improving the efficiency of capturing waste gas. .

[0002]

2. Description of the Related Art In a boot-type range hood fan, a filter is removably provided between a front end of a partition plate and a top plate of a hood body, and a side space around a blower is covered behind the filter except an intake port. There is a front panel that is covered and has a structure that is isolated from the front space. In this prior art, the side space around the blower is entangled, and the protrusion such as a joining flange for assembling and forming the hood body makes cleaning extremely troublesome. A front panel is provided to eliminate this troublesome cleaning. By the way, there is a flat type range hood fan which is different from the boot type range hood fan in a type called a straightening plate guide type. In this rectifier plate guide system, a rectifier plate is provided detachably at a position one step deeper from the open portion of the hood body, and a rectifier plate that secures a suction space between the filter and the open edge of the hood body upstream of the filter. By disposing them, the suction force is concentrated around the current plate to prevent air leakage from the open edge of the hood body into the room, thereby improving waste gas capturing efficiency.

In addition to the flat-type range hood fan described above, a rectifying plate is provided in the boot-type range hood fan with the front panel, which has a deep pocket, in consideration of a large amount of smoke generated by grilled fish and the like. It can be said to be preferable.
When a flow straightening plate is installed, the suction force does not act effectively while rising along the partition plate, and the suction force is effectively applied to waste gas that tends to leak into the room from the rear side of the hood body. And it can be pulled. However, since the rectifying plate is relatively heavy, it is necessary to make the hood body itself a structure having a high strength, which may cause a problem in terms of manufacturing cost. In addition, a large amount of fats and oils adhere to the current plate and flow down along the surface, so that a recovery means is required. As a collecting means, it is proposed to support the lower end of the rectifying plate with the same structure as the filter bar having a U-shape in a vertical cross section for supporting the filter. Since the inner width is slightly larger than the thickness of the oil, the oil and fat overflows over a long period of use and drops downward.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a technical problem in that the weight of a current plate for preventing waste gas from leaking out of a hood is locally concentrated. In other words, the oil and fat flowing down the flow straightening plate is received by the oil receiving / partitioning structure having a simple structure that does not become an obstacle to the rise of the waste gas.

[0005]

According to a first aspect of the present invention, there is provided a technical means which is arranged in contact with a front surface of a blower and traverses a space above a partition plate in a left-right direction. On the front panel, which divides the space between
A boot type range hood fan in which a bell mouth is attached to form an intake port of a blower, and a rectification of an area slightly smaller than that of the front panel in which the intake port is concealed at an interval from the front on the front panel itself. Attaching means for detachably attaching the plate is provided, the rectifying plate is attached by the attaching means, and the partition plate is continuously extended to the front plate side to the front of the lower end position of the rectifying plate, and an extension thereof. A waste gas suction space is formed between the rectifying plate, the hood body, and the partition plate, and the front panel is attached to an upright portion erected from the partition plate and the hood body, and a communication portion is provided at a lower end of the upright portion. The gist is that it is provided. Claim 2 provides the partition plate according to claim 1,
An oil line that communicates with the communication portion provided in the upright portion and that runs immediately below the bell mouth and the fan casing to an arbitrary surface of the hood body peripheral surface is formed. The gist is that the outlet to the provided oil pack is opened. A third aspect of the present invention is that the oil line according to the second aspect is press-formed on a partition plate. Furthermore, claim 4 is claim 2
The oil line described above is formed by superimposing an oil guide on the upper surface of a partition plate, and the discharge port is opened at a position near an arbitrary surface of the hood body in the partition plate, and the oil guide is provided at the discharge port. The gist is that the lower ends of the are communicated.

[0006]

According to the above technical means, the following effects are obtained. (Claim 1) The boot-type range hood fan has a front panel mounted on a hood body and an upright portion erecting from a partition plate, and the front panel and the rectifying plate are held by the front panel mounting means. The weight of the current plate and the front panel is dispersed by the hood body and the inclined plate. In addition, the fats and oils adhering and flowing down on the surfaces of the current plate and the front panel are received by the partition plate and guided rearward through the communicating portion of the upright portion to prevent dripping downward. In addition, the suction force of the waste gas suction space formed between the rectifying plate and the partition plate gives a downward force to the oil and fat flowing down from the rectifying plate to the partition plate, thereby providing a rear end portion of the partition plate. Quickly to the side. (Claim 2) The boot-type range hood fan guides oils and fats flowing down from the flow straightening plate and the front panel to an arbitrary side of the hood body peripheral surface (side surface, rear surface) via a bell mouth and directly below the blower. An oil line is formed. This oil line only needs to be shallow, so that the waste gas collides and does not become an obstacle to hinder the rise, and the oil and fat leaking from the attachment part with the bell mouth and the blower is also transferred to the oil pack. Discharge. (Claim 3) In the boot-type range hood fan, the partition plate has a rib structure to improve the deformation resistance of the hood. (Claim 4) In the boot-type range hood fan, the oil line is formed as a planar partition plate.

[0007]

Next, an embodiment of the present invention will be described. 1 to 3 show a boot-type range hood fan according to a first embodiment of the present invention, and FIG. 4 shows a main part of the second embodiment. Symbol A indicates the range hood fan.

In this boot-type range hood fan A, an upwardly inclined partition plate 3 is provided obliquely toward the front plate 2 at a middle and high position of the hood body 1 having a front opening portion capable of being opened and closed by the front plate 2. The air conditioner has a filterless structure in which a blower 4 is provided at a position near the back surface 11 of the space above the partition plate 3, a front panel 5 is attached to the front surface thereof, and a rectifying plate 6 is further provided in front thereof.

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 a suitable means such as spot welding. As shown in FIG. 1, a current plate 6 disposed in front of the front panel 5
It extends continuously to the front from the extended vertical line at the lower end position of.

The front panel 5 is slightly lower in height than the area that abuts on the front surface of the fan casing 14 of the blower 4 and divides the space above the partition plate 3 into the space on the blower 4 side and the space in front of it. The mounting flange 25 is bent at right angles to the upper edge, the left and right edges, etc. of the main plate 15, and the main plate 15 has an opening 35 having the same diameter as the front opening 44 of the fan casing 14.
Are formed. The front panel 5 has a lower end screwed to the upright portion 33 of the L-shaped member 23 overlapping the extension portion 13 of the partition plate 3 with a screw 100, and the mounting flange 25 is attached to the top surface 31 or the side surface 21 of the hood body 1. Similarly, it is attached by fixing the screw 100.

The L-shaped member 23 has a length equal to the inner width of the hood body 1 and is appropriately provided in the lower half portion of the upright portion 33 not used as a screwing allowance with the front panel 5 in the length direction. Communication portions (communication holes) 43 are formed at intervals.

The current plate 6 has an area slightly smaller than that of the front panel 5 and is detachably attached by an attaching means 7 provided on the front panel 5. The mounting means 7 is fixed to the surface of the lower part of the front panel 5 and supports a lower end of the rectifier plate 6 so as to be immovable back and forth. 6 and a pair of left and right mounting arms 27, 27 for fixing the screws 100 by screwing the upper end of the rectifying plate 6 to the mounting arms 27, 27 while the lower end of the rectifying plate 6 is mounted. By installing the straightening plate 6 by stopping 100,
A waste gas suction space X is formed between the periphery of the current plate 6 and the extension 13 and the inner surface of the hood 1.

Reference numeral 8 denotes an oil line formed on the partition plate. As shown in FIG.
3 is formed in a concave shape by pressing the partition plate 3 at the same position as or slightly in front of the partition plate 3 with a substantially funnel shape in a plan view. The discharge port 18 faces the oil pack 9 which is open and is detachably provided on the rear surface 11. This oil line 8 has a bell mouth 24
And a portion immediately below the fan casing 14, and the expanded portion has a communicating portion (communicating hole) located on both sides.
The fats and oils which are wider than the passages 43 and pass through all the communicating portions 43 are made to flow down to the discharge port 18. Code 6
Reference numeral 3 denotes a rising piece at the front edge (extended end) of the partition plate 3, which is formed to have a short dimension and rise.

The blower 4 is a small sirocco fan, and includes left and right side plates 14b of a volute-shaped body 14a.
The opening 44 is provided in the front side plate 14b of the fan casing 14 manufactured by spot welding or caulking and fixing the 14b, and the bell mouth 24 is attached to the opening 35 of the front panel 5 to form the intake port 34. Opening 4 of side plate 14b
A fan motor 54 having a fan mounting shaft (not shown) rotatably mounted is attached so as to close the fan 4, and a fan (sirocco fan) 64 is mounted on the mounting shaft (not shown). .

The fan casing 14 is provided with the body 1
The mounting flanges 14c are bent outward at the upper edge of the upper side 4a and the upper edges of both side plates 14b, 14b to surround the discharge port 14d, and the mounting flange 14c is attached to the top surface 31 of the hood body 1.
, So that it can be installed vertically.

The fan casing 14 has an oil drain hole 74 at a lower pressure area S1 outside the high pressure area S at the lower end of the body 14a.

The high-pressure area S is a portion where the fan 64 is directly opposed to the lower end portion of the body 14a immediately below the center of the volute, and high wind pressure acts on this portion in the centrifugal direction of the fan 64. One or more oil drain holes 74 are formed in the low wind pressure area s1 on both sides where the high wind pressure does not act.

Each of the low wind pressure areas S1 has a size of 15 m, although there are some differences depending on the size of the sirocco fan.
In the case where the number of oil drain holes 74 is one, a hole is formed in the central portion with a polygonal shape such as a triangle, a square, or a star having a size of, for example, about 5 mm. Approximately three holes are opened next to each other with the same shape and different shape. The oil drain hole 74 is provided in the body 14a.
A hole may be formed in a notch from the edge. Of course, the oil drain hole 74 faces the oil line 8.

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 current plate 6 to suck the waste gas and the exhaust duct 200.
Exhaust from outside. The oil and fat flowing down along the surface of the current plate 6 is received by the extension portion 13 of the partition plate 3, specifically, the flat portion 53 of the L-shaped member 23, and the oil line 8 is connected to the communication portion 43 of the upright portion 33. The oil and fat flowing down along the surface of the front panel 5 is also guided to the oil line 8, is sent to the blower 4, is blown off by the fan 64, adheres to the fan casing 14, and avoids the high pressure area S. The grease moving to the low pressure area S1 is also discharged to the oil line 8 through the oil drain hole 74 from the moving pick, and the grease that overflows from the gap of the attachment portion of the bell mouth 24 to the front panel 5 is also reduced. Take in oil line 8. Then, the oil is concentrated on the discharge port 18 at the lower end, and is dropped onto the oil pack 9 from there. Further, the suction force of the waste gas suction space X formed between the current plate 6 and the partition plate 3, specifically, the extension portion 13, is transferred from the current plate 6 to the extension portion 13 (specifically, the plane of the L-shaped member 23). It can be effectively used as a forcing force to push the oil and fat dropped on the portion 53) backward. When the current plate 6 and the front panel 5 are mounted, the front panel 5 is first mounted, and the current plate 6 is mounted and supported in front of the front panel 5 using the mounting means 7.

Although not shown, a filter having an area one size smaller than the current plate 6 and one size larger than the intake port may be provided between the front panel 5 and the current plate 6. In the case of this embodiment, a support arm having a filter bar is protruded forward from the upper and lower surface portions of the front panel 5 and the filter is supported by the upper and lower filter bars so that the filter can be inserted and removed. Make structure. The oil and fat leaking from the filter bar similarly drops on the flat portion 53 of the L-shaped member 23, and flows down from the communication portion 43 to the oil line 8 in the same manner as the oil and fat dropping from the current plate 6.

The oil line 8 may be formed by superposing an oil guide 28 on the upper surface of the partition plate 3 as shown in FIG. The oil guide 28 is a plate 2 having a substantially funnel shape in plan view similar to the oil line 8 described above.
8a are formed by raising short side walls 28b at both left and right edges except for the end of the widened portion. The bulge portion extends right above the discharge port 17 which is opened near the back surface 11 of the hood body 1 in the partition body 3, and a communication port 28 c communicating with the discharge port 17 is opened in the constricted portion. The L-shaped member 23 having the upright portion 33 is overlapped on the upper surface of the expanded end portion without the side wall 28c as described above. The oil and fat passing through the communication portion 43 is guided to the communication port 28c, the discharge port 17, and the oil pack 9.

Further, the first embodiment of the present invention includes a case where the oil line is not intentionally formed. Since the partition plate 3 is continuously extended to the front plate 2 side,
The triangular area in the side view of the partition plate 3 can be regarded as a large-capacity oil reservoir, which is suitable for today's needs for long maintenance periods. In the case of this embodiment, a drain plug which can be opened and closed appropriately is provided in the lower end area on the rear side of the side surface 21 of the hood body 1, and may be dealt with by an appropriate collecting means such as collecting in an oil pan arranged in another place. It is.

[0023]

As described above, the present invention has the following advantages. (1) A mounting means is provided on the front panel itself of the blower for detachably mounting a rectifying plate having an area slightly smaller than that of the front panel for concealing the air inlet from the front at an interval from the front. At the same time, the partition plate is attached and the partition plate is continuously extended to the front plate side to the front of the lower end position of the current plate, and waste gas is discharged between the extended portion and the current plate and the hood body and the partition plate. A boot-type range hood fan having a suction space, an upright portion erecting from the partition plate, the front panel attached to a hood body, and a communication portion provided in the upright portion, and thus a front panel supporting a rectifying plate. The weight of the hood can be dispersed and received without being concentrated by the rigidity of the hood and the inclined plate, and the durability can be maintained without dare to make the hood itself a robust structure. Moreover, since the rectifying plate is mounted using the mounting means provided on the front panel, there is no need to worry about an increase in the size of the hood itself despite the provision of the rectifying plate. Since the mounting of the rectifier plate is completed by mounting the rectifier plate on the body and the upright portion erecting from the partition plate and supporting the rectifier plate by the mounting means of the front panel, the rectifier plate is used for wide capture in front of the front panel. The mounting work can be performed using the space, and the workability of mounting the current plate can be improved. Furthermore, the effect of preventing oil and fat from dripping from the rectifying plate, the front panel, and the blower or leaking can be achieved by assembling the partition plate having the front end extended to the front plate side, which is an obstacle to waste gas rise. In addition, by extending to the front plate side, the peripheral surface of the hood body (side wall and back plate) naturally constitutes a large-capacity oil reservoir, extending the maintenance cycle. Type range hood fans can be provided at low cost. Then, the suction force of the waste gas suction space formed between the flow straightening plate and the partition plate gives a downward flowing force to the oil and fat dropped from the flow straightening plate to the partition plate, and the rear end side of the partition plate. The partition plate is gently inclined, or the viscosity of the oil or fat becomes relatively high due to the contaminants, and a weir is formed at the dropping position, which triggers the front end of the partition plate. It is possible to enhance the guiding action of the oil and fat without fear that the oil and fat may drop onto the cooking utensil or the like from the side. (Claim 2) In addition, the oil and fat that leaks from the mounting portion of the bell mouth together with the oil and fat dripped from the current plate is guided to an arbitrary surface of the hood body peripheral surface by an oil line, and is guided to the oil pack. Can be discharged to the outside without stagnation by using the partition plate as a falling body of oil and fat,
Of course, even if the oil line is formed in the partition plate as a recess, the oil line only needs to be shallow, and there is no fear that the waste gas collides and becomes an obstacle to hinder the rise. (Claim 3) The partitioning plate is effectively reinforced by the oil line rib function to provide strength and a suitable support structure for supporting the current plate can be configured. (Claim 4) It is possible to effectively reinforce a planar partition plate that does not hinder the rise of waste gas at all, and to have both excellent support function of the flow straightening plate and desired waste gas rise guide function.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a first embodiment.

FIG. 2 is a partially enlarged sectional view of a main part.

FIG. 3 is an exploded perspective view showing a relationship between a partition plate, a front panel, and a current plate.

FIG. 4 is an exploded perspective view of a main part of the second embodiment.

[Explanation of symbols]

4: Blower 3: Partition plate 5: Front panel 34: Inlet 6: Rectifying plate 33: Standing part 43: Communication part 24: Bell mouth 8: Oil line 1: Hood body 18: Discharge port 7: Mounting means 14: Fan Casing X: Waste gas suction space 11, 21: Peripheral surface (back, side) of hood body 28: Oil guide

Claims (4)

[Claims] 1. A bell mouth is attached to a front panel which is attached to the front surface of a blower and traverses a space above a partition plate in a left-right direction to divide into a space on the blower side and a space in front of the blower. A boot-type range hood fan having an opening, and a detachable mounting plate having an area slightly smaller than that of the front panel for concealing the air inlet at a distance from the front is detachably attached to the front panel itself. Provide mounting means,
The current plate is attached by the mounting means and the partition plate is continuously extended to the front plate side to the front of the lower end position of the current plate, and the extended portion and the current plate and the hood body and the partition plate An upright portion that forms a suction space for waste gas, and stands upright from the partition plate;
A boot-type range hood fan, wherein the front panel is attached to a hood body, and a communication portion is provided at a lower end of the upright portion. 2. An oil line is formed in said partition plate to communicate with a communication portion provided in said upright portion, and immediately below a bell mouth and a fan casing to an arbitrary surface of a hood body peripheral surface, 2. The boot-type range hood fan according to claim 1, wherein a discharge port for an oil pack provided on the arbitrary surface is opened at a lower end of the line. 3. The boot-type range hood fan according to claim 2, wherein said oil line is press-formed on a partition plate. 4. The oil line is formed by superposing an oil guide on an upper surface of a partition plate, and the discharge port is opened at a position on the partition plate near an arbitrary peripheral surface of the hood body. 3. The boot-type range hood fan according to claim 2, wherein a lower end of the oil guide communicates with the oil guide.