JP7109819B2 - cooking exhaust - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking exhaust system that mechanically contracts and accelerates an exhaust air flow and separates and removes grease, dust, and the like contained in the exhaust air by its centrifugal force.

Conventionally, an exhaust fan for exhausting contaminated air through an exhaust duct is attached to the upper part of cooking utensils that generate oil mist, combustion gas, etc. in a kitchen.
Furthermore, at the open end of the exhaust duct, a canopy made of a shielding plate with an open bottom surface is provided to increase the efficiency of exhausting contaminated air, and a filter case is attached, and a grease filter is installed to collect oil. are common (for example, Patent Document 1).
However, in the above-mentioned conventional canopy, since the suction flow of contaminated air is concentrated in the center of the canopy, the filter case, especially the bottom, is extremely dirty, and depending on the frequency of maintenance, oil may fall.
Therefore, there are cases where the filter case is attached to the wall to prevent oil from falling onto the cooking utensils, but considering that the greater the distance from the cooking utensils, the worse the exhaust efficiency, it is not a good idea.

JP 2015-75290 A

The present invention has been proposed in view of the above, and aims to sufficiently remove oil from the inside of the canopy, minimize dirt inside the canopy, and prevent oil from falling onto cooking utensils.

In order to solve the above problems, the present invention consists of a. A canopy consisting of a shielding plate with an opening on the bottom surface, the shielding plate integrally comprising a top plate having an opening for connecting an exhaust duct, and upright left and right side plates surrounding the top plate from all sides, a front plate, and a rear plate. A groove for drainage is formed at the lower end and a drainage port is formed at one corner, and an open space is formed inside. C. A partition plate is placed parallel to the top plate in the open space. 2. Straightening plates are detachably arranged in the open space in parallel with the left and right side plates so that there is a gap between them and the formed grooves. Place detachable filters between the rectifying plate and the left and right side plates. A spray nozzle connected to a water supply is attached to the upper part of the filter.
An exhaust system for cooking according to the present invention is an exhaust system that is installed in the form of a canopy above a source of polluted air, comprising a top plate having an opening for connecting an exhaust duct, and an upright plate surrounding the top plate from all sides. The left and right side plates, the front plate, and the rear plate are integrally formed, and at the bottom end, a drainage hole is formed in one corner of the four corners formed with grooves for drainage, and an opening space is formed inside, A partition plate is arranged in parallel with the top plate so as to form a ventilation path for contaminated air in the open space, and a gap is formed between the left and right side plates and the groove formed in the lower end of the straightening plate in parallel. , a filter is detachably installed in the ventilation passage, the spray nozzle is connected to the water supply on the upper part of the filter, and the contaminated air entering through the gap is discharged into the ventilation passage by the operation of the exhaust fan. The filter and the water sprayed from the spray nozzle are drained as dirty water, and the washed air is sucked into the exhaust duct side, and filters with different shapes and specifications, or A plurality of similar filters may be installed.
Further, a cleaning nozzle for automatically cleaning the filter installed in the ventilation path at the same time when the exhaust fan is stopped may be connected to the hot water supply pipe or the water supply pipe.

In this invention, a ventilation path for contaminated air is formed by arranging a partition plate and a rectifying plate in an open space formed by a shielding plate. Since the structure is such that contaminated air does not flow toward the center of the canopy, dirt on the wall surface of the open space can be kept to a minimum, and grease can be prevented from falling onto cooking utensils.
Furthermore, a filter provided in the air passage and a spray nozzle connected to the water supply above the filter remove dirt from the polluted air as wastewater, and can sufficiently remove oil from the inside of the canopy.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the whole structure of the exhaust device for cooking which concerns on this invention. 1 is a perspective view showing the inside of a cooking exhaust device according to the present invention; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments according to the present invention will be described in detail below with reference to the drawings.
FIG. 1 is a cross-sectional view showing the overall construction of a cooking exhaust system according to the present invention, and FIG. 2 is a perspective view showing the inside.
The canopy 1 is integrally composed of a top plate 2 having an exhaust duct mounting opening 2a, left and right side plates 3, a front plate 4, and a rear plate 5 forming four sides, and a groove 6 for drainage is formed at the lower end. A drainage port 7 is formed in one of the four corners, and an open space 8 is formed inside.

As shown in FIG. 1, a ventilation passage 11 is formed in the open space 8 by a partition plate 9 attached parallel to the top plate 2 and a current plate 10 attached parallel to the left and right side plates 3 .
A gap 12 is formed between the current plate 10 and the groove 6, and the left and right gaps 12 serve as suction ports for contaminated air.
A filter 13 is provided between the side plate 3 of the ventilation passage 11 and the rectifying plate 10, and the filter 13 is detachable by providing a mounting bracket 14 on the side plate 3 and inserting it.
In order to attach the rectifying plate 10, the fitting 14 and the rectifying plate 10 are brought into contact with each other and screwed so that they can be attached and detached.
A spray nozzle 15 connected to a water supply is installed above the filter 13 .
In the canopy 1 constructed as described above, when the exhaust fan is driven, the rising polluted air is sucked from the open space 8 through the gap 12 between the groove 6 and the straightening plate 10 and enters the ventilation passage 11 .

When the polluted air that has entered the ventilation passage 11 passes through the filter 13, the spray water sprayed from the spray nozzle 15 provided on the upper part of the filter 13 forms a film on the filter, accelerating the exhaust air flow and centrifuging it. The oil and dust separated by force are caught on the filter 13 and drained from the drain port 7 as sewage.
Contaminated air is exhausted from an exhaust fan through an exhaust duct 16 after a large amount of oil and dust is discharged as sewage.
As described above, in this embodiment, the partition plate 9 and the rectifying plate 10 are arranged in the open space 8 to form the ventilation passage 11, and the gap 12 formed between the rectifying plate 10 and the groove 6 is filled with Since polluted air is sucked, contamination of the wall surface of the open space 8 can be kept to a minimum.
In addition, since a plurality of filters 13 attached to the ventilation passage 11 can be installed, a higher oil removal rate is possible. etc. can be combined to collect finer contaminants.
As with the rectifying plate 10, it is detachable, so the filter can be easily cleaned and exhaust efficiency can be maintained.
Further, a cleaning nozzle 17 connected to a hot water supply pipe is arranged in the air passage, and automatic cleaning with hot water is performed simultaneously with stopping the blower, so the frequency of filter cleaning is reduced and the oil collection rate is maintained.

Since the present invention is configured as described above, it is possible to sufficiently remove oil in the ventilation passage 11 and prevent the oil from falling onto the cooking utensil.

1 canopy
2 top plate
2a Exhaust duct mounting opening 3 Side plate
4 Front plate
5 rear plate
6 groove
7 drain port
8 open space
9 Divider
10 current plate
11 Ventilation passage
12 Gap
13 filters
14 Mounting bracket
15 spray nozzle 16 exhaust duct
17 cleaning nozzle

Claims (3)

An exhaust device having a canopy made of a shielding plate with an open bottom surface,
The shielding plate is integrally composed of a top plate having an opening for connecting an exhaust duct, left and right side plates and a front plate that surround the top plate from all sides, and a rear plate. , by forming a groove for drainage at the lower end of the rear plate, an opening space is formed inside it,
A partition plate parallel to the top plate is arranged in the open space, and straightening plates parallel to the left and right side plates are detachably arranged downward from left and right ends of the partition plate, respectively , and the top plate and the partition plate, and between the left and right side plates and the rectifying plate, and in the ventilation channel, a filter and a spray nozzle for forming a water film connected to the water supply on the upper part of the filter are arranged. and sucking contaminated air from a gap formed between the groove and the lower end of the current plate. 2. The exhaust system for cooking according to claim 1, wherein a plurality of said filters can be detachably arranged between said left and right side plates and said current plate. 3. The cooking exhaust system according to claim 1, wherein a washing nozzle for washing said filter is provided in said air passage for hot water supply or water supply.

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