JPH0134037Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a ventilation fan for ventilating a room.

Conventional configurations and their problems In recent years, various types of ventilation fans have been developed in order to make Japan's ever-improving living spaces more livable and comfortable.

The conventional ventilation fan as described above will be explained below with reference to FIG.

In Figure 1, 1 is the main body of the ventilation fan, 2 is the casing that guides the flow of air, 3 is the motor that generates the starting force that moves the ventilation fan, 4 is the blade that is driven by the motor 3 and creates the air flow, and 5 is the main body 1 6 is a shutter to prevent backflow when the ventilation fan is stopped, 7 is a duct that guides the air flowing out from the main body 1 to the outside, 8 is an adapter that connects the main body 1 and the duct 7, 9 is the duct 7 and adapter 8
This tape is used to secure the windshield and prevent wind leakage.

In the above configuration, if the adapter 8 is always fixed to the main body 1, taping for connection with the duct 7 may be very difficult, or an inspection hole must be made to always close the taped part. This had the disadvantage that it was necessary to check whether there was any air leakage from the air.

In addition, in Fig. 2, 21 is the main body of the ventilation fan, 2
2 is a frame that is detachable from the main body 21; 23 is an adapter fixed to the frame 22; 24 is a duct that guides the air flowing out of the ventilation fan main body 21 to the outside;
5 is a tape for fixing the duct 24 and the adapter 23 and preventing wind leakage. However, in the above configuration, it is necessary to remove the frame 22 from the main body 21 in advance, fix the adapter 23 fixed to the frame 22 and the duct 24 with tape 25, and then fix the frame 22 and the main body 21 without any gaps. In addition, adapter 23
The taping between the duct 24 and the duct 24 is done by taping the cylindrical shape of the duct 24 and the trapezoidal cone of the adapter 23, which has the disadvantage that it is quite difficult to work to eliminate wind leakage. Ta.

Purpose of the Invention In view of the above-mentioned conventional drawbacks, the present invention provides a ventilation fan that allows the main body and duct to be easily connected without the need for an adapter.

Composition of the invention In order to achieve this purpose, the ventilation fan of the invention has the following features:
A box-shaped ventilation fan body with a built-in motor and blades fixed to the motor, and an open bottom is provided with an inverted U-shaped notch on one side of the body, and a first cutout is formed on the outer side of the edge of the box-shaped ventilation fan body with an open bottom. A circular arc shape having a guide part formed therein, a duct mounting cutout part with a packing attached to the upper arcuate part, a second guide part fitted to the first guide part inside, and a packing attached to the upper part. A ventilation fan comprising a side plate having a recess, and when fitted with the duct attachment notch, the recess forms a circular shape that sandwiches the duct with the circular arc portion of the duct attachment notch. This is what I did.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below in Figures 3 to 5.
This will be explained with reference to the figures.

In the figure, the box-like shape has a built-in motor 13, blades 14 fixed to the motor 13, and a casing 12 for guiding wind flow, and has an opening at the bottom and a flange 32 bent outward at the opening. An inverted U-shaped notch is formed on one side of the ventilation fan body 11 from the opening side, a first guide portion 31 having a U-shaped cross section is formed on the outer edge of the first guide portion 31, and a gasket 19 is provided on the upper arcuate portion 20a. An arcuate recess 18a is provided with a duct attachment notch 20 pasted thereon, has a U-shaped second guide part 33 on the inside that fits into the first guide part 31, and has a gasket 19 pasted on its upper part. The exhaust duct 17 is sandwiched and held together with the circular arc portion 20a of the duct attachment notch 20 via the packing 19, and the lower end is bent outward to form an opening on the lower surface of the ventilation fan main body 11. A side plate 18 is provided which overlaps a part of the flange 32 and forms a part of the flange 32, and a shutter 16 for preventing back wind is provided at the end of the duct 17 on the ventilation fan main body side 11 side.

The installation of the ventilation fan configured as above will be explained below.

First, the duct 17 is installed to the ceiling where the ventilation fan is installed, and the shutter 16 is installed at the end of the duct 17. Next, the ventilation fan main body 11 is inserted into the ceiling from the indoor side of the wooden frame 15 provided in the opening of the ceiling and fixed. Then, the duct 1 is inserted into the duct mounting notch 20.
7, fit the second guide part 33 of the side plate 18 to the first guide part 31 on the side of the ventilation fan main body 11, push up the duct 17 from below, and insert the side plate 18 into the wooden frame 15. Attach it to complete the installation of the ventilation fan.

As described above, according to this embodiment, the ventilation fan main body 1
The first guide part 31 on the first side and the second guide part 33 of the side plate 18 are fitted together, the side plate 18 is pushed up from below, and the duct 17 is sandwiched through the packing 19, thereby taping the outer periphery. Compared to connecting duct 17 through an adapter, duct 1
It becomes possible to improve the airtightness of the connection part 7 and to perform the connection reliably. Additionally, it can be easily installed from the indoor side after the ceiling board is installed.

Effects of the invention As described above, the present invention eliminates the conventional adapter and connects the duct by sandwiching it between the duct installation notch provided on the side wall of the main body and the side plate that fits into this notch. As a result, the ventilation fan can be easily installed, there is no wind leakage from the gap between the duct and the main body, and all work related to installing and removing the ventilation fan from the indoor side can be done easily. There is no resistance loss due to this, and its practical effects are significant.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a conventional ventilation fan, Fig. 2 is a perspective view of the same ventilation fan, Fig. 3 is a side sectional view of a ventilation fan according to an embodiment of the present invention, and Fig. 4 is a side sectional view of the ventilation fan when the duct is installed. The side view, FIG. 5, is a sectional view taken along line A-A' in FIG. 11... Ventilation fan body, 13... Motor, 14...
...Blade, 17...Duct, 18...Side plate, 18a
... recess, 19 ... packing, 20 ... duct attachment notch, 20a ... circular arc section, 31 ... first guide section, 33 ... second guide section.

Claims (1)

[Scope of utility model registration request] A box-shaped ventilation fan body with a built-in motor and blades fixed to the motor, and an open bottom is provided with an inverted U-shaped cutout on one side of the body, and a first cutout is formed on the outer side of the edge of the box-shaped ventilation fan body with an open bottom. A circular arc shape having a guide part formed therein, a duct mounting cutout part with a packing attached to the upper arcuate part, a second guide part fitted inside the first guide part, and a packing attached to the upper part. A ventilation fan comprising: a side plate having a recess, and when fitted with the duct attachment notch, the recess forms a circular shape that sandwiches the duct with the arcuate portion of the duct attachment notch.