JP3466134B2 - Ventilation equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator installed on a ceiling wall of a dining room, living room or the like to ventilate a room.

[0002]

2. Description of the Related Art Conventionally, when a dish such as Genghis Khan, sukiyaki, or yakiniku is cooked using a pot or an iron plate on a table installed in a dining room, a living room, etc., oil smoke and steam generated by the cooking However, there is a problem in that the air cannot be efficiently exhausted, odor remains in the room, and the walls and pillars in the room are contaminated with oil smoke and the like. Therefore, as disclosed in Japanese Patent No. 2828421, the present inventor
The inventor has invented a ventilation device that can lower the intake hood from the ceiling surface to near the upper part of the table. This ventilator has many excellent advantages such as being able to efficiently exhaust oil smoke, steam, etc. generated by cooking on the table, and being able to rise to the ceiling surface when not in use.

However, in the above ventilation device, a recess is provided in the ceiling surface, and a forced exhaust device is provided in the space above the ceiling so that the upper opening of the recess and the forced exhaust device are connected by a duct. Since the exhaust side of the forced exhaust device and the exhaust port opened to the outside are connected by a duct, the installation of the forced exhaust chamber and the installation of the duct are complicated. Therefore, there was a demand for improvement in workability, but it was difficult to easily carry out work in the restricted space because the height dimension of the ceiling space is limited. Furthermore, when the air intake hood is stored, the air intake portion of the air intake hood is exposed to the ceiling surface, and the ceiling surface becomes uneven, and therefore improvement in appearance is also required.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above conventional circumstances, and an object thereof is to efficiently suck and exhaust oil smoke, steam, etc. when cooking on a table. Another object of the present invention is to provide a thin ventilation device that can be constructed and is excellent in workability, and that can be applied to a building with a low ceiling above the ceiling.

[0005]

As a technical means of the present invention for solving the above-mentioned problems, claim 1 has a box shape of a downward opening, and a main body case having an exhaust opening on a side surface, A fan mechanism having an exhaust port facing the exhaust opening and an intake port directed downward, a telescopic tube that is connected to the intake port and is vertically expandable and contractible, and an intake port that is connected to a lower end opening of the expandable tube. food and, while stretching the elastic tube, said suction hood, and a telescopic mechanism for vertically moving between a desired amount falling is not a lowered position and the storage position that has housed inside the main body case, the telescopic tube , Stacked inward and outward
You can expand and contract by sliding multiple pipes
And the upper opening of the
The pipe is fixed to the pipe housing provided at the intake port of the
The body storage section has its upper end side shared with the upper end opening of the expansion tube.
To the inside of the fan casing of the fan mechanism,
To store the upper end side of the contracted multiple pipes,
An annular pocket with a downward opening is constructed around the upper end of the expansion tube.
It is characterized by Here, the fan mechanism is
The fan mechanism may have any configuration as long as it has an intake port on the lower side and an exhaust port on the lateral side, and preferably a sirocco fan that is driven and rotated by a drive motor is provided in a fan casing. In addition, the above expansion tube,
There is a mode in which it expands and contracts by sliding a plurality of pipes that are stacked in the inward and outward directions, and a mode in which it is formed in a bellows shape using synthetic resin, aluminum material, etc. Therefore, the former embodiment is preferable. In addition, the expansion mechanism is, for example, one end of a cord-shaped member such as a rope, a chain, or a wire connected to the intake hood, and the other end of the cord-shaped member is wound around a winding device such as a manual winch or an electric winch. The intake hood is horizontally extended while expanding and contracting the expansion tube by appropriately combining a mechanism that fixes the winding device in the main body case and a known mechanism such as a cylinder, a link mechanism, a pantograph, and a bellows. It is a mechanism that can be raised and lowered as it is.

Further, the tube body housing part, for example, by the top opening in the hollow member frustoconical securing the top opening of the expansion pipe, downward opening around the upper end of the expansion pipe By forming the annular pocket part of the above, or by inserting and fixing the upper end opening part of the expansion tube in the center of the inverted pot-shaped member, an annular pocket part with a downward opening is formed around the upper end side of the expansion tube. Including configured aspects and the like. The tubular body storage portion may be formed integrally with the fan casing, or a member different from the fan casing may be provided at the intake port.

Further, according to a second aspect of the present invention, an opening / closing lid is provided at the downward opening of the main body case, and the opening / closing lid has a closing surface portion capable of closing the downward opening and a bending shape on the closing surface portion. And a bent portion of the engaging hood is axially attached to the downward opening of the main body case, and when the intake hood rises, the edge of the intake hood engages with the engaging piece. It is characterized in that it is configured to rotate the closing surface portion in the closing direction.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an example of a ventilation device according to the present invention.

This ventilation system A has an exhaust opening 1 on its side surface.
In the main body case 10 having 0b, the fan mechanism 20 and
Telescopic tube 3 connected to the intake port 22a of the fan mechanism 20
0, the intake hood 40 connected to the lower end opening of the expandable tube 30, and the storage position and the ceiling surface where the intake hood 40 is stored in the main body case 10 while expanding and contracting the expandable tube 30. An expansion / contraction mechanism 50 that moves up and down between a lowered position and a desired position, and an opening / closing lid 60 that is closed when the intake hood 40 is in the storage position is provided in the downward opening 10a of the main body case 10. It will be provided.

The body case 10 is formed by forming a sheet metal member into a box shape having a downward opening so that the downward opening 1 is provided on the lower surface side.
0a, and a circular exhaust opening 10b into which the duct 71 can be loosely inserted is formed on one side surface thereof. In the figure, reference numeral 11 is a substantially horizontal partition that separates the upper half of the main body case 10 having the fan mechanism 20 from the lower half of the main body case 10 in which the expansion tube 30 and the intake hood 40 are housed. It is a partition plate, and is fixed to the inner side surface of the main body case 10 by loosely inserting the upper part of the expansion tube 30, the expansion part 51 of the expansion mechanism 50 described later, the rope 52b, etc.

The fan mechanism 20 includes a sirocco fan 21,
It consists of a fan casing 22 and a drive motor 23,
This is a well-known mechanism that discharges gas sucked from a bellmouth-shaped intake port 22a provided in the axial direction of the fan casing 22 from an exhaust port 22b provided in the centrifugal direction of the fan casing 22. And this fan mechanism 20
The fan casing 22 is fixed in the main body case 10 with the exhaust port 22b facing the exhaust opening 10b and the intake port 22a facing downward.

Although the fan mechanism 20 can be replaced with another fan mechanism using a propeller fan, there is a case where the gas sucked from below is discharged sideways to be discharged upward. In comparison, since the vertical dimension of the main body case 10 can be made smaller and it is relatively silent, a fan mechanism using a sirocco fan as in the present embodiment is preferable.

The expandable tube 30 is formed by stacking a plurality of tubular bodies 31 whose inner diameters are successively reduced in the inward and outward directions, and the adjacent tubular bodies 31, 31 slide while slidingly contacting each other.
It is configured to expand and contract as a whole.

The tubular body 31 has an outward bent portion 31a formed by bending an opening end portion on one end side (lower side in the illustrated example) to the outside over the entire circumference, and an opening on the other end side (upper side in the illustrated example). Inward bend 3 with the end bent inward over the entire circumference
1b and. Then, when the two tubular bodies 31, 31 are overlapped with each other, the outward bent portion 31a of the inner tubular body 31 is brought into sliding contact with the inner peripheral surface of the outer tubular body 31, so that the airtightness inside and outside the expandable tube 30 is improved. While being secured, the outward bent portion 31a of the inner pipe body 31 has the inward bent portion 31a of the outer pipe body 31.
By coming into contact with b, it is prevented from coming off. In addition, expansion tube 3
Since the other tube 31 is not connected to the uppermost tube 31 of 0, the inwardly bent portion 31b at the upper end is not provided.

The expandable tube 30 may be replaced with an expandable bellows tube. However, in the bellows tube, the bellows-shaped tube wall is easily contaminated by the adhesion of oil, dust, dust or the like. Therefore, it is preferable that the plurality of tube bodies 31 described above are stacked.

The expandable tube 30 having the above-described structure has its upper end opening welded to the tube housing 80. The tubular body accommodating portion 80 is formed in an inverted concave shape having a tubular body insertion hole 81a that penetrates in the vertical direction in a substantially central portion, and has a hollow truncated cone shape insertion portion 81.
And an annular mounting portion 82 welded to the outer peripheral surface of the insertion portion 81 (see FIG. 5). This tube housing 80
By welding the upper end opening of the expandable tube 30 to the tubular body insertion hole 81a in the upper end opening of the insertion section 81,
An annular pocket portion 80a having a downward opening is formed around the upper end side of the.

The tube housing 80 is screwed and fixed to the lower surface of the fan casing 22 with the upper end of the tube housing 80 inserted into the fan casing 22 together with the upper end opening of the expansion tube 30. ing. Therefore,
When the expandable tube 30 is contracted, between the annular pocket 80a, that is, the outer peripheral surface of the uppermost tubular body 31 and the inner peripheral surface of the insertion portion 81, the upper end sides of the plurality of contracted tubular bodies 31 are located. It is stored.

In the illustrated example, the upper end of the insertion portion 81 is inserted to a position close to the side surface of the sirocco fan 21, but since the sirocco fan 21 has a hollow cylindrical shape,
If the intake / exhaust volume of the fan mechanism 20 is within a range that does not decrease so much, the upper end of the insertion portion 81 is further intruded into the sirocco fan 21, so that the expansion tube 30 can be further expanded.
It may be arranged on the inner upper side. Incidentally, according to a preferred example of the present embodiment, the penetration size W of the insertion portion 81 into the fan casing 22 is set within the range of 10 to 15 mm.

The intake hood 40 has a substantially umbrella-shaped vertical cross section with the opening area gradually expanding downward, and has a circular opening 42 at the upper end thereof to which the lower end of the expansion tube 30 is vertically slidably connected. The lower end has an intake portion 41 that is substantially rectangular in bottom view.

The air intake part 41 supports a partition plate 41a, which is rectangular in plan view and is smaller than the opening, at the center of the rectangular opening in plan view. This partition plate 41a is
This is based on a well-known technique for efficiently inhaling the air below through the opening around it. The intake section 41 is not limited to the configuration in which the partition plate 41a is provided as long as it is configured to efficiently inhale the air below, and for example, a rectangular opening on the lower surface. The part may be provided with a partition plate having a plurality of small holes.

The telescopic mechanism 50 includes a telescopic unit 51 which is vertically expandable and contractible by linking a plurality of arms 51a in a pantograph shape, and an electric winder 52 which can rotate in the forward and reverse directions.
The winding device 52 is configured so that two ropes 52b and 52b are wound around a and can be wound and unwound.

The expandable part 51 has one upper end of the upper arm 51a pivotally attached to the upper part inside the main body case 10, and the other arm 51a engages slidably and rotatably left and right. Both arms 51 at the bottom
The a and 51a are pivotally attached to and engaged with the intake hood 40. Further, two expansion / contraction parts 51 are provided on both sides of the expansion / contraction pipe 30 so as to be substantially parallel to each other, and guide the intake hood 40 so as to vertically move up and down.

The winding drive section 52 includes an electric winding machine 52a supported on the inner surface of the body case 10, and the body case 10.
Two pulleys 52c, 52c pivotally supported on the upper surface of the motor, and one end is wound around the winding roller 52a-1 of the electric winder 52a via the pulley 52c and the other end is fixed to the intake hood 40. Two ropes 52b, 5
2b, and is configured to rotate the electric winder 52a forward or backward by an operation from a control box (not shown).

Further, the pulley 52c directs the vertical tangential direction to the inside of the expansion / contraction portion 51 of the intake hood 40, and
The take-up roller 52 of the take-up device 52 has a horizontal tangential direction.
It is axially supported toward a-1. The winding roller 5
2a-1 is formed by connecting upper and lower two-stage rollers, and ropes 52b are wound around the upper and lower rollers, respectively, so that the two ropes 52b and 52b are wound or unwound at the same time. And the two ropes 52b, 52b and the pulleys 52c, 52c are the expansion tube 3
They are arranged substantially symmetrically so as to sandwich 0. Therefore, when the electric winder 52a is driven, the two ropes 52b and 52b are simultaneously wound or unwound,
The intake hood 40 moves up and down in a substantially horizontal state.

The expanding / contracting mechanism 50 drives the winding driving section 52 to expand / contract the expanding / contracting tube 30, while the intake hood 40 is housed in the main body case 10 and the desired amount. Elevate to the lowered position. At that time, in the storage position, the main body case 1
0 downward opening 10a has two left and right opening / closing lids 60, 60
Closed by.

Each of the opening / closing lids 60 is formed by bending a substantially rectangular metal plate to form a downward opening 10a of the main body case 10.
A closing surface portion 61 capable of closing one half side of the
1 is formed with an engaging piece portion 62 that is continuous in a bent shape,
The bent portion 60a of the closing surface portion 61 and the engaging piece portion 62 that are bent at a substantially right angle is provided with a downward opening 10a of the main body case 10.
It is pivoted on one side.

The closed surface portion 61 has a flat rectangular shape, and the outer surface thereof is coated with wallpaper or painted so as to correspond to the ceiling surface of the building. Engagement piece 6
2, the engaging end piece portion 62a slightly protruding in the same direction as the closing surface portion 61 is formed at the rotating end portion facing the inside of the main body case 10.

The opening / closing lid 60 is used for the intake hood 4.
When 0 rises, the edge portion 40a of the intake hood 40 engages with the engaging piece portion 62 and the engaging end piece portion 62a,
The main body case 10 is rotated so as to close the downward opening 10a.

The operation at this time will be described in detail. When the intake hood 40 gradually rises, the edge 40a of the intake hood 40 first comes into contact with the engaging piece 62 (see FIG. 4A). Then, the edge portion 40a rotates the opening / closing lid 60 in the closing direction while slidingly contacting the surface of the engagement piece portion 62 (see FIG. 4B). Furthermore, when the intake hood 40 rises,
The opening / closing lid 60 comes into contact with the engaging end piece 62a to close one half of the downward opening 10a of the main body case 10 (see FIG. 4C).

A limit switch (not shown) is provided between the main body case 10 and the opening / closing lid 60, and the winding drive section 5 is driven by a contact signal from the limit switch.
2 is controlled to stop. Further, when the winding drive unit 52 is driven to lower the intake hood 40,
The opening / closing lid 60 is gradually opened in the reverse order of the above operation.

Thus, the ventilation device A having the above-described structure is inserted into and fixed to the opening provided on the ceiling surface, and the duct 71 communicating with the outside inside the ceiling is provided with the exhaust opening 1.
0b is connected to the exhaust port 22b of the fan mechanism 20. Then, when cooking on a table or the like, the intake hood 40 is lowered by a desired lowering amount, and when not in use, the intake hood 40 is raised to be housed in the main body case 10, and the left and right opening / closing lids 60 are provided. , 60 is closed so that the closed surface is substantially flush with the ceiling surface.

[0032]

Since the present invention is constructed as described above, it has the following effects. (Claim 1) By lowering the intake hood, it is possible to efficiently suck and exhaust oil smoke, steam and the like when cooking on a table, and further, in the main body case, a fan mechanism, a telescopic tube, and an intake hood. Since it has an expansion and contraction mechanism, etc., at the time of installation, the main body case can be fixed in the opening provided on the ceiling, and the duct communicating with the outside can be connected to the exhaust port of the fan mechanism. The workability is much better than the ones. Moreover, by disposing the fan mechanism so that the exhaust port is directed to the side and the intake port is directed downward, the exhaust port is not provided in the upper part, so that the main body case is configured to be relatively thin, It can also be used for buildings with a low ceiling above the ceiling. Further, the if as the air inlet of the fan mechanism providing the tube body housing part, the upper opening of the telescopic tube in a state of intrusion into the fan casing, the upper end side of the plurality of tubes, the tube body housing part Since it is housed in the annular pocket formed by, the body case can be made thinner. (Claim 2 ) Furthermore, by providing an opening / closing lid that opens and closes as the intake hood moves up and down, in the downward opening of the main body case,
The downward opening of the main body case can be opened and closed with a simple mechanism that does not use a direct drive source. Therefore, the ceiling surface when the intake hood is in the storage position can be made to look nice and flat, and by attaching decoration or wallpaper to the surface of the opening / closing lid,
It can also improve the aesthetics of storage. Moreover, since the downward opening is closed while the intake hood is housed, it is possible to prevent the odor in the main body case and the duct from flowing back into the room due to the pressure inside and outside the room when the fan mechanism is stopped. it can.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an example of a ventilation device according to the present invention from the front side.

FIG. 2 (a) is a vertical cross-sectional view of a main part showing the ventilation device from the left side, and FIG. 2 (b) is an enlarged vertical cross-sectional view of part b in FIG. 2 (a).

FIG. 3 is a longitudinal cross-sectional view of a main part showing a state in which an intake hood is stored in the ventilation device.

FIG. 4 is an operation explanatory view sequentially showing states (a) to (c) in which the intake hood is stored.

FIG. 5 is a perspective view showing a tubular body storage portion of the ventilation device.

[Explanation of symbols]

10: Body case 10a: downward opening 20: Fan mechanism 21: Sirocco fan 22: Fan casing 30: Telescopic tube 31: Tube 40: Intake hood 40a: edge 41: Intake section 50: Telescopic mechanism 60: Open / close lid 61: Closure surface part 62: Engagement piece 80: Tube storage A: Ventilator

Claims (2)

(57) [Claims] 1. A fan mechanism having a box-like opening with a downward opening and having an exhaust port facing the exhaust port and an intake port facing downward in a main body case having a side face having an exhaust port. An expansion / contraction tube that is vertically expandable and contractible that is connected to an intake port, an intake hood that is connected to a lower end opening of the expansion tube, and the expansion hood is expanded and contracted while the intake hood is housed in the main body case. provided with a storage position and a telescopic mechanism for vertically moving between a desired amount falling is not a lowered position, said telescopic tube, a plurality of tubes superimposed inside and outside direction
It is configured to expand and contract by sliding
The upper end opening is provided at the intake port of the fan mechanism.
And the upper end side of the tubular body accommodating portion is fixed to the tubular body accommodating portion.
With the fan mechanism
So that the upper ends of the contracted pipes can be stored,
An annular pocket with a downward opening is constructed around the upper end of the expansion tube.
Ventilation device characterized by being formed . 2. The lower opening of the main body case is opened and closed.
A lid is provided, and the opening / closing lid is a closing surface portion capable of closing the downward opening.
And an engaging piece portion that is bent and continuous to the closing surface portion
At the same time, the bent part is the downward opening of the main body case.
When the intake hood rises when the intake hood is
Edge of the door engages with the engaging piece to close the closing surface
The ventilation device according to claim 1, wherein the ventilation device is configured to rotate in a direction .