JPS6356459B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter device that opens and closes the exhaust port by providing a rotatable shutter on the exhaust port formed on the outer wall of a building, and its purpose is to prevent the generation of dirt. To provide a shutter device capable of preventing the flapping of a shutter, which is more likely to occur in weather where the outside wind blows strongly than before.

1 and 2 for the first embodiment of the present invention.
This will be explained with reference to the figures. In FIG. 1, reference numeral 1 denotes an outer wall of a building, on which an exhaust port 4 is formed that communicates an indoor space 2 and an outdoor space 3. Reference numeral 5 denotes a range hood fan, which is a well-known type having a blower device 7 disposed inside a hood 6 having an inlet 6a and an outlet 6b. It is located indoors 2. Further, in FIGS. 1 and 2, 8 is a shutter device, which is constructed as follows. That is,
Reference numeral 9 denotes a spout body which also serves as a support frame, one end of which is attached to the edge of the discharge port 6b of the hood 6, and the entire body is inserted into the exhaust port 4. in this case,
The mouth body 9 is provided so that the other end does not protrude from the outer wall 1 to the outdoors 3. 10
is a shutter, and this is the indoor part 2 of the inside of the mouth part 9.
It is provided at the side portion so as to be rotatable about the upper end. Reference numeral 11 denotes a stopper, which is located at the lower part of the shutter 10 so that the shutter 10
The stopper 11 prevents the shutter 10 from rotating in the opposite direction of arrow A from the closed position. Reference numeral 12 denotes an outside wind deflection plate, which is attached to the upper wall of the interior of the mouth body 9 on the outdoor 3 side so as not to protrude to the outdoors, and which protrudes inward from the upper wall. outdoor 3
It slopes downward towards the side.

When the range hood fan 5 is operated in the above configuration, air containing oil smoke etc. from the room 6 is sucked in through the intake port 6a and discharged from the discharge port 6b, and the air moves the shutter 10 in the direction of arrow A due to wind pressure. The breath is discharged to the outdoors 3 through the mouth body 9 while rotating the shutter 10 .

According to this embodiment, the following effects can be obtained. That is, the mouth body 9 is moved from the outer wall 1 to the outdoors 3.
Since the mouth body 9 is provided in a form that does not protrude to
It is possible to prevent stains as much as possible, and also to improve the appearance. Furthermore, since the shutter 10 is provided inside the mouth body 9 at a portion that is the indoor 2 side, even when the shutter 10 is rotated toward the arrow A side (the outdoor 3 side), the shutter 10 is Since the shutter 10 rotates inside the mouth body 9, the shutter 10 does not protrude from the outer wall 1 to the outdoors 3. Therefore, it is possible to prevent the shutter 10 from getting dirty and to improve its appearance.

By the way, in the conventional shutter device shown in FIG. 3, when the outside wind blows strongly, the shutter 10 flaps, which causes the air inside the room 2 to flow out, and the outside wind to flow into the room 2, causing the indoor In addition to inconveniences such as heating, noise was a problem.
The following is thought to be the main cause of the flapping of the shutter 10. That is, when a relatively strong outside wind blows up the outer wall 1 as shown by arrow B, the shutter 10 moves in the direction of arrow A because the inside of the exhaust port 4 and therefore the inside of the mouth body 9 is made negative pressure by the wind passing through there. When the external wind in the direction of arrow C acts on the outer wall 1, the shutter 10 is rapidly rotated in the opposite direction of arrow A.
It is thought that 0 fluctuates.

The negative pressure phenomenon described above is a new problem that arises when a structure is adopted to prevent the shutter 10 from becoming dirty and to improve its appearance. That is, in order to prevent the shutter 10 from getting dirty and improve its appearance, it is important to prevent the shutter 10 from protruding outdoors when it rotates. If a structure is adopted in which the interior of the mouth body 9 is provided on the indoor side, the outdoor 3 side portion of the mouth body 9 becomes a recess that opens toward the outdoors 3 (a recess deep up to the shutter 10 part). Therefore, when the outside wind blows against this recess in the direction of arrow B in FIG. 3 as described above, the recess becomes under negative pressure. In other words, if the purpose is to prevent the shutter 10 from getting dirty, new problems such as the above-mentioned negative pressure phenomenon and the flapping of the shutter 10 will arise.

However, according to this embodiment, since the outside wind deflection plate 12 is provided inside the mouth body 9 as described above, when the outside wind acts on the outside wall ₁ as indicated by the arrow B1, as shown in FIG. When the outside wind enters the mouth body 9 at least a little, it hits the shutter 10 whose direction is changed by the outside wind deflection plate 12 as shown by arrow _B2 .
Therefore, the inside of the mouth body 9 does not become a negative pressure, but rather the outside wind acts to push the shutter 10, and the shutter 10 is never opened. Note that since the outside wind blowing in the direction of arrow C originally acts to push the shutter 10, the shutter 10 does not open as a result. Moreover, this outside wind changing plate 12 also has a mouth body 9.
Since it is installed only inside the outside wind changing board 1
2 itself does not protrude from the mouth body 9 toward the outdoors 3 side, which also prevents stains and improves appearance.

4 and 5 show a second embodiment of the present invention, and in the same figure, the outside wind deflection plate 13 is formed on the mouth body 9 by integral molding therewith. This is different from the first embodiment. According to this second embodiment, in addition to the effects achieved by the first embodiment, it is possible to reduce the number of manufacturing steps.

FIG. 6 shows a third embodiment of the present invention, in which the external wind deflection plate 14 is attached to the mounting fixture 1.
This embodiment differs from the first embodiment in that it is detachably attached to the mouth body 9 via the openings 5 and 15. According to this third embodiment, in addition to the effects of the first embodiment,
This provides the effect that the outside wind deflection plate 14 can be removed as necessary.

The present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without departing from the scope of the invention.

As explained above, the present invention provides an exhaust port formed in the outer wall of a building with a vent in a form that does not protrude from the outer wall to the outdoors, and a shutter that is routed to a part of the interior of the vent that is on the indoor side. By making it movable, the mouth body does not need to protrude from the outer wall to the outdoors, and the rotating shutter also does not need to protrude outside.This prevents dirt on the mouth body and the shutter. In addition to preventing this, the appearance can also be improved. Furthermore, an outside wind deflection plate is provided in the part of the inside of the mouth body that is on the outdoor side so as not to protrude outdoors, but projects inward from the upper wall of the mouth body and slopes downward toward the outdoor side. Because of this structure, the outside air can be skillfully changed on the outdoor side of the mouth body, and by preventing stains and improving the appearance, it is possible to reliably eliminate the problem of newly caused shutter flapping. Furthermore, while assuming that this outside wind changing board itself does not need to protrude outside, and that it is possible to prevent stains and improve the appearance as a whole,
This has an excellent effect of reliably preventing the shutter from flapping.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, FIG. 1 being a longitudinal sectional side view together with a range hood fan, and FIG. 2 being an enlarged perspective view showing the entire device. FIG. 3 is a longitudinal sectional side view showing a conventional example. 4 and 5 show a second embodiment of the present invention, FIG. 4 is a longitudinal sectional side view, FIG. 5 is a view equivalent to FIG. 2, and FIG. FIG. 2 is a diagram roughly equivalent to FIG. 2 showing three embodiments. In the figure, 1 is an outer wall, 4 is an exhaust port, 5 is a range hood fan, 8 is a shutter device, 9 is a mouth body, 10 is a shutter, and 12, 13, and 14 are outside air deflection plates.

Claims (1)

[Claims] 1. An exhaust port formed in the outer wall of a building is provided with a vent in a form that does not protrude from the outer wall to the outdoors, and a shutter is rotatably provided inside the vent on the indoor side. An outside wind deflection plate is provided in a portion of the interior of the mouth body that is on the outdoor side so as not to protrude to the outdoors, protruding inward from the upper wall of the mouth body and sloping downward toward the outdoor side. A shutter device characterized by: