JPH02103333A - Kitchen duct - Google Patents

Abstract

PURPOSE:To improve the efficiency of inspection and cleaning by closing an inspection opening of a duct laid out on a kitchen ceiling, installing a removable abutting board which forms the ceiling of kitchen room,and providing a recessed oil sump and an oil drain which can be opened and closed freely. CONSTITUTION:A thumbscrew 32 is removed from a kitchen room 12 in the case of inspection and cleaning inside a duct 10, then an abutting board 20 is lifted up and hooks 20C and 20D are removed from a stopper 24B of a bracket 24. Then, the abutting board 20 is slanted and pulled out from an opening 26 of a duct main body 18 to the side of the kitchen room 12. Since the abutting board 20 comprises a part of a ceiling board 14, the interior of the duct 10 can be inspected and cleaned directly from the kitchen room 12. The oil and the like contained in the exhaust air are adhered on the duct 10 and the oil is partially deposited on oil sumps 25A and 25B. The oil can be extracted and disposed of from the duct 10 by removing a cap 38 from a threaded portion 37C of a pipe member 37 at a regular interval.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a kitchen duct used for exhausting smoke from a kitchen room.

[Conventional technology]

BACKGROUND ART Conventionally, ducts for kitchens are generally similar to those installed in offices and the like. This duct is placed in the ceiling of the kitchen, away from the ceiling board, so that the exhaust air sucked in from the exhaust port provided in the kitchen room passes through this duct and is exhausted to the outside of the building.

However, in the above-mentioned duct, when inspecting and cleaning the inside of the duct, it is necessary to install an inspection port on the ceiling and also form an opening for the work in the duct, which makes inspection and cleaning work difficult. It was complicated and inefficient. Further, the exhaust gas from the kitchen room contains a large amount of oil, and this oil often accumulates in the duct, making it difficult to clean, which is also undesirable for preventing duct fires.

[Problem to be solved by the invention]

The present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to obtain a kitchen duct that can improve the efficiency of inspection work and cleaning work.

[Means to solve the problem]

In order to achieve the above object, the invention described in claim (1):
A duct body that is placed in the ceiling of the kitchen and has a horizontal opening formed in a part of the bottom plate, and a contact plate that becomes part of the bottom plate of the duct body and closes the notch and forms the ceiling of the kitchen room. ,
It is characterized by having attachment means for removably attaching the abutment plate to the duct body.

Further, the invention as claimed in claim (2) provides the kitchen duct as claimed in claim (1), including an oil sump recess provided in the bottom plate of the duct, and an openable and closable oil draining means for extracting oil from the oil sump recess. It is characterized by having the following.

[Effect]

In the present invention having the above configuration, the exhaust gas sucked into the duct from the kitchen room passes through the duct and is discharged to the outside of the building. In this case, oil, etc. contained in the exhaust gas adheres to the inside of the duct. In order to clean the oil and inspect the inside of the duct, the inside of the duct can be inspected and cleaned through the opening by operating the attachment means from the kitchen and removing the abutting plate from the duct body. Since this contact plate constitutes the ceiling of the kitchen room, the worker does not have to go inside the ceiling and can operate it directly from the kitchen room.

In addition, if an oil sump recess is provided on the bottom plate of the duct, some of the oil adhering to the inside of the duct will be collected in the oil sump recess, so by opening the oil draining means, the oil accumulated in the oil sump recess can be removed. Can be discarded and prevents duct blockage.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 4.

As shown in FIG. 4, the duct 10 is arranged in the ceiling 13 of the kitchen room 12, and the duct 10 is located in the through cutout 14 of the ceiling plate 14.
The bottom part is inserted into A.

Therefore, the upper part of the duct 10 is in the ceiling 13 and the lower part is in the kitchen room 1.
It will be placed within 2. Further, a cushioning material 15 is inserted inside the ceiling 13 between the duct IO and the through notch 14A, and a sealing material is inserted between the duct 10 and the through notch 14A on the kitchen room 12 side of the cushioning material 15. 16 has been inserted.

One end of the duct 10 is connected to an exhaust port (
A blower fan (not shown) is provided in the middle part so as to discharge the exhaust gas sucked in from this exhaust port out of the building from the other end.

As shown in FIGS. 1 to 3, the duct 10 is provided with a duct body 18 and an abutment plate 20, and the abutment plate 20 is removable from the duct body 18.

The opening of the duct main body 18 has a substantially rectangular shape, through which exhaust gas sucked from the exhaust port of the kitchen room 12 flows toward the outside of the building. Duct body 1
Flange portions 18A and 1 are provided at both axial ends of 8, respectively.
8B is provided inside the duct body 18 at right angles to the axis of the duct body 18, and these flange parts 18A, 18B
This allows the duct main body 18 to be connected to the flange portions 18A, 18B of the adjacent duct main body 18.

Further, both ends 21A and 21B along the longitudinal direction (horizontal direction in FIG. 3) of the upper piece 18E of the duct body 18 are connected to the kitchen chamber 12.
Parts of both end portions 21A and 21B are bent vertically to the side and have thick walls, so that the side pieces 18 of the duct body 18
They are secured to U-shaped hook portions 19A and 19B provided at the upper portions of C and 18D with their openings facing upward.

A protrusion 22 is provided at the center of the bottom of the duct body 18 along the axis of the duct body 18.

The center part of the protruding surface 22A of the protruding part 22 is cut out and the opening 2 is formed.
6, and the interior of the duct body 18 can be inspected and cleaned through the opening 26.

The lower part of the side pieces 18C and 18D of the duct body 18 and the protrusion 2
Between the side pieces 27A and 27B of 2 are oil sump recesses 25A and 25.
B, so that oil adhering to the inside of the duct 10 accumulates. The duct body 1 is attached to the side pieces 27A and 27B.
A plurality of circular holes 28 are bored at appropriate intervals along the axis of the thumbscrew 3 as part of the attachment means for the abutting plate 20.
2 is designed to pass through.

A pipe material 37 passes through the bottoms of the oil sump recesses 25A and 25B. The ends of the tube 37 inserted into the oil sump recesses 25A, 25B are flared portions 37A that widen in the radial direction, and are locked to the bottoms of the oil sump recesses 25A, 25B.

A threaded portion 37B is formed on the central outer circumferential portion of the tube 37, and a nut 36 is screwed into this threaded portion 37B from the kitchen chamber 12 side, and the nut 36 and flared portion 37 open the oil sump recess 25.
The tube material 37 is fixed to the oil sump recesses 25A and 25B by sandwiching the bottoms of the oil sump recesses 25A and 25B.

Further, a packing 39 is inserted between the lower part of the oil sump recesses 25A, 25B and the nut 36 to prevent oil leakage.

The threaded portion 37C formed on the outer layer of the lower end of the tube material 37 includes:
A camp 38 is screwed together from the kitchen chamber 12 side to prevent oil accumulated in the oil sump recesses 25A and 25B from flowing out.

Therefore, by removing the cap 38 from the threaded portion 37C, the oil accumulated in the oil sump recess 25A125B can be discharged. Adjust the depth of the oil sump recesses 25A and 25B so that they are deepest at this cap 38 portion.
, 25B may be inclined.

At the flange portions 18A and 18B side ends of the protruding surface 22A,
A substantially U-shaped bracket 24 as another part of the attachment means for the abutment plate 20 is welded with its opening facing the direction in which the protrusion 22 protrudes. Flange portion 18 of bracket 24
The pieces on the A and 18B sides are oil stoppers 24A, and the pieces on the opening 26 side of the bracket 24 are the locking parts 24 of the abutment plate 20.
It is B.

The contact plate 20 has a rectangular shape, and both ends in the longitudinal direction have mouth-shaped hook portions 2DC and 20D with openings toward the bottom of the duct body 18, and the brackets 24 are inserted into these openings. A locking portion 24B is inserted.

The other end portions of the contact plate 20 are bent at right angles toward the bottom of the duct body 18 to form flange portions 20E, 20F, and the side pieces 27A, 27B of the protruding portion 22 have protruding surfaces 22A.
It is designed to be locked from any direction. Side piece 27A, 2
There is a packing 2 between 7B and flange parts 20E and 20F.
9 is inserted to prevent the oil in the oil sump recesses 25A, 25B from leaking out from the opening 26.

In the flange portions 20E and 20F, a plurality of circular holes are bored at appropriate intervals along the longitudinal direction, and nuts 42 are coaxially welded from the side pieces 18C and 18D of the duct body 18, and the duct body 180 yen. A thumbscrew 32 passing through the hole 28 from the kitchen room 12 side is screwed together to fix the contact plate 20 to the duct body 18. Therefore, the abutting plate 20 forms part of the bottom plate of the duct 10 and also forms part of the ceiling plate 14 of the kitchen room 12.

Next, the operation of this embodiment will be explained.

Exhaust gas sucked into the duct 10 from the exhaust port of the kitchen room 12 flows through the duct 10 and is discharged outside the building. In this case, oil and the like contained in the exhaust air adheres to the inside of the duct 10, and some of the oil is stored in the oil reservoirs 25A and 25B. Therefore,
By periodically removing the cap 38 from the threaded portion 37C of the tube member 37, the oil stored in the oil reservoirs 25A, 25B can be extracted from the duct 10 and discarded.

In addition, when inspecting the inside of the duct 10 and cleaning the inside of the duct 10, remove the thumbscrew 32 from the kitchen chamber 12, and
0 toward the inside of the duct body 18 and hook portion 20
C, 20D from the locking portion 24B of the bracket 24.

Next, the abutting plate 20 is tilted to open the opening 26 of the duct body 18.
From there, pull it out to the kitchen room 12 side. That is, since the contact plate 20 constitutes a part of the ceiling plate 14, there is no need for the worker to dismantle and restore the duct 10 and the ceiling plate 14, which was conventionally done, and there is no need for the worker to enter the ceiling 13. By removing the abutment plate 20 from the duct body 18, the interior of the duct 10 can be inspected and cleaned directly from the kitchen room 12. Further, even if the worker is not a duct cleaning specialist, the inside of the duct 10 can be inspected and cleaned in a short time.

Furthermore, an abutment plate 20 having a suction port for sucking the exhaust gas in the kitchen room 12 is provided, and by using this abutment plate 20, the suction port can be easily added or changed.

〔Effect of the invention〕

Since the present invention has the above configuration, it has an excellent effect that the efficiency of inspection work and cleaning work can be improved.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the kitchen duct of this embodiment, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 (Fig.
-I line sectional view and FIG. 4 are front views showing the state in which the kitchen duct of this embodiment is attached to a building. 10... Duct, 18... Duct body, 20... Contact plate, 20C, 20D... Hook portion, 24... Bracket, 25A, 25B... Oil sump recess, 28... Round hole, 32... Thumb screw, 36... Nut, 37... Tube material, 38... Cap.

Claims (2)

[Claims] (1) A duct body that is placed in the ceiling of the kitchen and has an inspection opening formed in a part of the bottom plate, and a contact that forms part of the bottom plate of the duct body and closes the notch and forms the ceiling of the kitchen room. A kitchen duct comprising: a plate; and mounting means for removably attaching the contact plate to the duct body. (2) The kitchen duct according to claim (1), characterized by having an oil sump recess provided in the bottom plate of the duct, and an openable and closable oil draining means for extracting oil from the oil sump recess. Kitchen duct.