WO2020071292A1

WO2020071292A1 - Technology to prevent soiling of range hood and fan

Info

Publication number: WO2020071292A1
Application number: PCT/JP2019/038382
Authority: WO
Inventors: 明彦山口
Original assignee: 明彦山口
Priority date: 2018-10-02
Filing date: 2019-09-27
Publication date: 2020-04-09
Also published as: KR102324976B1; JP6549811B1; KR20210032540A; JP2020056562A; CN112673213B; CN112673213A

Abstract

[Problem] To provide a technology that can prevent soiling of a range hood and a fan thereof for collecting and discharging oil smoke generated in kitchens. [Solution] Due to a structure in which all the compressed air of a fan F attached to the range hood is sent to an exhaust duct D, and by such a flow, the oil smoke and dirt generated in the kitchen are suctioned from the gap on the outer periphery of the range hood and discarded through the exhaust duct, no oil smoke or dirt generated in the kitchen will pass through the fan, and accordingly the fan attached to the range hood will not be soiled by oil smoke or dirt generated in the kitchen.

Description

Technology to prevent contamination of range hoods and fans

The present invention realizes a technology for preventing pollution in a range hood and a fan for collecting and discharging oil smoke generated in a kitchen.

Inexpensive range hoods merely collect and discharge oil fumes generated in a kitchen by a fan, but a configuration in which a filter is provided to allow oil and dust to adhere thereto and discharge only clean air has become widespread. Further, there is also known a technique in which, when oil or dust is accumulated in a filter, the filter is washed and removed with water, and in addition, as in Patent Literature 1, microwaves are applied to soften oils and fats to facilitate washing. However, since oil and dust of oil smoke adhere to not only the filter but also other kitchen equipment, they are manually cleaned and cleaned on a regular basis.

JP 2017-58092 A

According to the technique of Patent Document 1, washing can be performed if oil or dust adheres to the filter and becomes dirty or the efficiency is reduced. However, oil or dust attached to anything other than the filter cannot be removed, and therefore, it has to rely on manual labor. In addition, contamination of the fan itself cannot be prevented.
The present invention proposes a technology in which oil and dust are discharged without adhering to a part other than the filter or the fan itself, and realizes a range hood that does not require cleaning of the part other than the filter and the fan.

The technical problem of the present invention focused on such a problem, proposed a technology in which oil and dust were directly discharged without adhering to a wall of a kitchen facility or a fan or the like, and relied on humans. It is to realize a range hood that does not require cleaning of kitchen equipment.

The technical section of the present invention is solved by the following means. Claim 1 sends at least half of the compressed air generated by the fan from one of the routes to the exhaust route, and the other is blown into the rectification route from the other route by dividing it into two, dividing the rectification route into two, One side is sent to the lower layer of the bottom plate of the current plate, and the other is sent to the auxiliary layer between the middle plate of the current plate and the bottom plate. A method for preventing contamination of a range hood, wherein the range hood is ejected toward the exhaust route via an upper surface.

Claim 2 is a partition disposed between the outlet of the casing surrounding the fan, the exhaust duct, and the rectifying plate, and halves the pressure air generated by the fan and emitted from the outlet to halve or more. It has a central gap that sends air to the exhaust route, sends the rest to the rectifying route, and sends the compressed air sent to the rectifying route to the lower layer of the bottom plate of the rectifying plate, between the middle plate of the rectifying plate and the bottom plate. The pressure hood sent to the auxiliary layer is a structure for preventing contamination of the range hood, which has a structure in which the air is blown out from a gap provided on the outer periphery of the range hood toward the exhaust route via the upper surface of the intermediate plate. is there.

The range according to claim 2, wherein a filter is provided so as to surround at least one pressure air pipe for sending a pressure air generated from a fan and emitted from an outlet of the casing to a rectification route. It is a hood pollution prevention structure.

According to a fourth aspect of the present invention, one or more pressure air tubes are provided for blowing air from above the ceiling wall disposed above the middle plate to below the middle plate, and the space is formed in a space where the pressure tubes do not exist. The structure for preventing pollution of a range hood according to claim 2 or 3, wherein the structure is such that the compressed air passing through the upper surface of the plate is blown toward the exhaust route.

According to a fifth aspect, the outer periphery of the ceiling wall is curved downward, and the dirt sucked toward the lower layer of the bottom plate is a negative pressure ejected from the gap on the outer periphery of the range hood through the inside of the curve. The structure for preventing contamination of a range hood according to claim 4, wherein the structure is a suction structure.

As described in claim 1, half or more of the compressed air generated by the fan is sent from one route to the exhaust route, and the other is sent from the other route to the rectification route, and the rectification route is divided into two, and one is divided into two. It is sent to the lower layer of the bottom plate of the current plate, and the other is sent to the auxiliary layer between the middle plate of the current plate and the bottom plate. Since it is ejected toward the exhaust route through the above, oil smoke and dirt generated in the kitchen do not pass through the fan, and therefore, the fan attached to the range hood is not contaminated with oil smoke and dirt generated in the kitchen. impossible.

Claim 2: A partition disposed between an outlet of a casing surrounding a fan, an exhaust duct, and a rectifier plate, wherein a pressure wind generated by the fan and emitted from the outlet is divided into two or more to be half or more. To the exhaust route, the remainder to the rectifying route, and a central gap for sending the compressed air sent to the rectifying route to the lower layer of the bottom plate of the rectifying plate, between the middle plate of the rectifying plate and the bottom plate. The compressed air sent to the auxiliary layer was blown out from the gap provided on the outer periphery of the range hood toward the exhaust route via the upper surface of the middle plate, so the attached fan was generated in the kitchen. It cannot be contaminated with oil fumes or dirt.

As described in claim 3, since a filter is provided so as to surround one or more pressure air pipes for sending the pressurized air generated from the fan and coming out of the outlet to the rectification route, the dirt coming out of the kitchen for the first time with this filter is provided. Attach and discard with filter.

As in claim 4, one or more pressure air tubes for blowing air from above the ceiling wall disposed above the middle plate to below the middle plate are disposed, and from a space where the pressure tube does not exist. Since the structure is such that the compressed air passing through the upper surface of the middle plate is blown toward the exhaust route, dirt such as oil smoke generated in the kitchen is sucked into the lower layer of the bottom plate, and then the negative pressure due to the gap around the outer periphery of the range hood. It is sent to the exhaust route by pressure and is discharged, and dirt from the kitchen cannot adhere to the wall of the range hood or the like.

As in claim 5, the outer periphery of the ceiling wall is curved downward, and the dirt sucked toward the lower layer of the bottom plate passes through the inside of the curve and is discharged from the gap on the outer periphery of the range hood. Due to the structure sucked by the pressure, the compressed air that has descended from the fan outlet W in the compressed air supply tube 11 causes the oil smoke sucked into the lower surface of the bottom plate 3 to be compressed from the gap 7 on the outer periphery of the range hood as indicated by an arrow. It is transferred from the space between the supply cylinders 11 to the central exhaust duct D.

FIG. 4 is a cross-sectional view illustrating a technique for preventing contamination of a fan of a range hood according to the present invention, as viewed from the front of the fan. FIG. 3 is a cross-sectional view illustrating a technique for preventing contamination of a range hood according to the present invention, as viewed from the front of a fan. FIG. 3 is an enlarged view showing a lower central blowout portion of the current plate of FIG. 2. It is an enlarged view which shows the blowing part for the center of the outer periphery of a range hood. FIG. 3 is a side view of the range hood of FIG. 2. It is sectional drawing which shows the flow of the compressed air which came out of the fan of FIG. FIG. 3 is an upper perspective view showing the entire current plate. FIG. 8 is a plan view of the current plate of FIG. 7. It is sectional drawing which shows the attachment position of a filter.

Next, an embodiment will be described as to how the technology for preventing pollution of a range hood according to the present invention is actually embodied. FIG. 1 is a front sectional view of a range hood according to the present invention, in which a rotating blade of a fan F and an exhaust duct D appear. The fan F is dedicated to the exhaust duct D, and the generated compressed air is exclusively blown to the exhaust duct D by the guide A in the exhaust direction. Therefore, the outer periphery is surrounded by the casing C, and the other is closed except for the outlet W. A bottom plate 2 is provided substantially parallel to the top plate 1. The top plate 1 is provided with a downward gap G provided on the outer periphery of the bottom plate 2. Therefore, the oil smoke and dirt generated in the kitchen rises by being drawn by the airflow of the exhaust duct D generated from the fan F, is sucked up from the gap G on the outer periphery of the bottom plate 2, is guided to the exhaust duct D, and is discharged to the outside. Exhausted. Accordingly, oil smoke and dirt generated in the kitchen are guided exclusively from the gap G to the exhaust duct D and are exhausted to the outside, so that they do not pass through the fan F and are not contaminated.

FIG. 2 is a front sectional view of a range hood according to the present invention. A fan F has a casing C whose outer periphery is surrounded, and compressed air is emitted from an outlet W. Below the fan F, a rectifying plate composed of a ceiling wall 1, a bottom plate 3 and a middle plate 5 of the present invention is provided, and a discharge port 4 for exhausting smoke is provided at the center. Hereinafter, description will be given along the flow of the compressed air. The pressurized air coming out of the fan F exits the outlet W and is divided into two by a T-shaped partition having a cross-sectional shape in a horizontal direction. An A route for blowing the upper side of the partition to the exhaust duct D, and a rectifying plate below the partition. Divided into B route to blow to. Since the pressure air blown out from the fan F has a large air volume and a high wind speed, the pressure near the exhaust duct D becomes negative, and the oil smoke collected at the exhaust port 4 is sucked out vigorously and sent to the oil smoke outlet 4.

The route is divided into two routes, a route A flowing to the flue gas pressure supply tube D1 and a route B flowing to the rectification pressure wind supply tube 11. First, the rectification pressure wind passes through the connection unit 10 when passing through the route B. It passes through the compressed air supply cylinder 11 and enters the rectification chamber R. The pressurized air entering the flow straightening chamber R is discharged in all directions from a central blowing gap 6 located at the center of the lower surface of the flow straightening plate as shown in FIG. 3, and an outer circumferential blowing gap provided at the outer peripheral edge of the flow straightening plate as shown in FIG. 7 is ejected toward the center and converges on the exhaust duct D. The guide lid 12 of the central outlet 6 and the rectifying bottom plate 3 are parallel. The gap between the outlets 6 is 1.0 mm to 1.5 mm.

As shown in FIG. 4, the outer circumference of the bottom plate 3 is curved upward, and the tip 8 is horizontally bent inward, so that a gap 7 parallel to the outer circumference of the current plate 5 is formed. This gap 7 is also 1.0 mm to 1.5 mm. Although the amount of air blown out from the

gaps

6 and 7 is small, the wind speed is high, so that dirt such as oily smoke around is drawn in and sent out to the exhaust duct D. Rectification is performed so that such speed increase is smooth.

Further, the negative pressure wind on the lower surface of the bottom plate 3 quickly sucks the oil smoke and carries it to the outer peripheral opening 9 of the hood, and the negative pressure wind generated in the horizontal gap 7 between the upper surface of the middle plate 5 and the horizontal end 8 causes the smoke of the oil smoke and the like. Dirt is quickly conveyed to the central exhaust duct D. Since an air film is interposed on the lower surface of the bottom plate 3 and the upper surface of the middle plate 5, dirt such as oil smoke does not adhere.

FIG. 5 is a side view of the range hood of the present invention, in which a side surface of the fan F is illustrated. FIG. 6 is an enlarged view of the lower current plate in FIG. The flow path of the compressed air flowing out of the fan F is the same as that in FIG. 2. The compressed air flowing out of the fan F is divided into an A route and a B route, the A route is sent to the exhaust duct D1, and the B route is , Through the compressed air supply cylinder 11 and into the rectification chamber R. The compressed air that has entered the rectifier chamber R is ejected at a high speed from the central gap 6 located at the center of the lower surface of the rectifier R to the lower surface of the bottom plate 3 as shown in FIG. The compressed air blown between the bottom plate 3 and the middle plate 5 is blown toward the center from an outer circumferential gap 7 provided on the outer peripheral edge of the current plate, and becomes a negative pressure. Then, the contaminated layer on the lower side of the bottom plate 3 is sucked and sent to the central exhaust duct D.
Since the area of the range hood on the lower side of the fan F is small, the size of the current plate is also reduced.

FIG. 7 is an upper perspective view showing the entire structure of the rectifier, and FIG. 8 is a plan view, in which four compressed air supply cylinders 11 stand in the center. The compressed air flowing down from the fan outlet W in the compressed air supply tube 11 causes the oil smoke sucked into the lower surface of the bottom plate 3 to move from the space between the compressed air supply tubes 11 through the gap 7 on the outer periphery of the range hood as shown by the arrow. To the exhaust duct D.

Since dirt such as oil smoke gathers in the vicinity of the compressed air supply cylinder 11, a filter f indicated by a dashed line is provided so as to surround the compressed air supply cylinder 11, as shown in FIG. When the filter f is formed in a cylindrical shape, an oil receiver is provided in a groove shape at the lower portion of the outer surface, so that a liquid oil can be collected. It is assumed that the ratio of the compressed air discharged from the fan F is about 80% for the exhaust port and about 20% for the rectifier.

As described above, all the compressed air from the fan attached to the range hood is sent to the exhaust duct, and oil smoke and dirt generated in one kitchen by the flow are suctioned from the gap around the range hood and sent to the exhaust duct. Due to the structure, oil smoke and dirt generated in the kitchen do not pass through the fan, and therefore, the fan attached to the range hood cannot be generated in the kitchen and contaminated with oil smoke or dirt.

F Fan 1 Food top plate 2 Rectifier plate 3 Below the rectifier bottom plate 4 Oil smoke outlet
5 Rectifier plate upper surface
6 Rectifier plate bottom outlet
7 Outlet of outer edge of current plate
9 Hood outer peripheral opening 10 Connection part
11 Pressure air supply cylinder 8 Curved tip G Downward gap D Exhaust duct DS Smoke exhaust duct f Filter (filter)

Claims

More than half of the compressed air generated by the fan is sent from one route to the exhaust route, and the other is split from the other route to the rectifying route and blown in two. The other side is sent to the lower layer of the bottom plate, and the other side is sent to the auxiliary layer between the middle plate of the current plate and the bottom plate. A method for preventing contamination of a range hood, which comprises squirting toward a route.
A partition disposed between an outlet of a casing surrounding a fan, an exhaust duct, and a flow straightening plate, and halves the pressure air generated by the fan and emitted from the outlet to blow at least half to an exhaust route. , The remaining air was sent to the straightening route, and the central air that sent the compressed air sent to the straightening route to the lower layer of the bottom plate of the straightening plate was sent to the auxiliary layer between the middle plate of the straightening plate and the bottom plate. A structure for preventing contamination of a range hood, wherein a structure is provided in which compressed air is blown from a gap provided on the outer periphery of the range hood toward the exhaust route via the upper surface of the middle plate.
3. The structure for preventing contamination of a range hood according to claim 2, wherein a filter is provided so as to surround one or more pressure air pipes that send a pressure air generated by a fan and discharged from an outlet of the casing to a rectification route. .
One or more pressure air tubes that blow air from above the ceiling wall disposed above the middle plate to below the middle plate are disposed, and from the space where the pressure tube does not exist, via the upper surface of the middle plate The structure for preventing pollution of a range hood according to claim 2 or 3, wherein the compressed air is blown toward the exhaust route.
The outer periphery of the ceiling wall is curved downward, and the dirt sucked toward the lower layer of the bottom plate passes through the inside of the curve and is sucked by a negative pressure ejected from a gap around the outer periphery of the range hood. 5. The structure for preventing contamination of a range hood according to claim 4, wherein: