JP3256381B2 - Ceiling ventilation fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan for a ceiling installed in a humid place such as a bathroom.

[0002]

2. Description of the Related Art An example of such a conventional ceiling fan is shown in FIG.
This will be described with reference to FIG. FIG. 8 is a sectional view showing a main part of a structure of a conventional ceiling ventilation fan. The mounting plate 1 has a communication port 1a at an upper portion and a flange portion 1b at a lower end portion, and the flange portion 1b is screwed to a wooden frame 3 in an opening of the ceiling plate 2 so that the ceiling space is removed. 4 stands.

The exhaust port body 5 has a tapered cylindrical shape whose diameter decreases from the base end to the tip.
The base portion has a flange portion 5a, and the flange portion 5a is attached to the mounting plate 1 by spot welding, and is thus in communication with the communication port 1a. And the exhaust port body 5
Are connected to an exhaust duct 6 arranged in the ceiling back 4.

The ventilation fan body 7 has an opening at the lower surface, a flange portion 7a at the opening at the lower surface, and an exhaust port 7b at the side surface. The flange portion 7a overlaps the flange portion 1b of the mounting plate 1 from below. Thus, the exhaust port 7b is disposed on the ceiling back 4 such that the exhaust port 7b communicates with the exhaust port body 5 via the communication port 1a . In this type of ceiling ventilation fan used in a high humidity place such as a bathroom, air containing water vapor taken in from the interior of the bathroom by an air blower (not shown) disposed in the ventilation fan main body 7 passes through an internal exhaust path. As a result, dew is formed on the inner surface of the exhaust path, and in particular, water droplets W due to dew condensation generated on the inner surface of the exhaust port body 5 move toward the base end on the slope of the inner surface of the exhaust port body 5. Since the gap between the flange portion 5a of the exhaust port body 5 and the mounting plate 1 is not airtight and has a gap, the water droplet W flows into the gap and then leaks out from the lower end of the flange portion 5a to leak out from the mounting plate 1. Along the surface. Eventually, the leaked water droplets W reach the fixing wooden frame 3 and the ceiling plate 2, causing the wooden frame 3 and the ceiling plate 2 to rot and weakening the mounting strength of the ventilation fan, and causing mold and the like. There were hygiene problems.

[0005]

As an improved technique for solving such a conventional problem, for example, Japanese Utility Model Publication No. Sho 62-145.
As shown in Japanese Patent Publication No. 13, the wooden frame is made larger than the main body of the ventilation fan to provide an interval between the main body of the ventilation fan and the wooden frame, and a protruding portion is formed on the flange portion of the main body of the ventilation fan toward the lower surface opening side. It has been considered that the leaked water is received, and a hole is provided in the protruding portion so that the water falls from the hole into the room.

However, in such an improved technique,
Since a predetermined space is required between the ventilation fan body and the wooden frame, the dimensions of the wooden frame and the dimensions of the flange portion of the ventilation fan body must be increased, so that the decorative frame also needs to be enlarged. There was a disadvantage that the size was increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a ceiling ventilation fan which can prevent water due to dew condensation from splashing on a wooden frame and a ceiling plate, and which does not become large. To be.

[0008]

In order to achieve the above object, a ceiling fan according to claim 1 has a communication port at an upper part, a flange at a lower end, and an opening of a ceiling plate at a lower part. A metal mounting plate having a flange portion attached to the wooden frame in a state inscribed in the wooden frame, and a flange portion at the base end portion, the flange portion being attached to the mounting plate and communicating with the communication port. With a vent body and a built-in blower, the lower surface is open and has a vent on the side surface, a flange is formed on the lower surface opening, and the flange overlaps the flange of the mounting plate from below. By being attached to the wooden frame, a ventilation fan body having a side surface in contact with the mounting plate and a ventilation opening communicating with the ventilation opening body through the communication opening, and a cut-and-raised position formed on the mounting plate on the ventilation opening body side. And
A water receiving portion for receiving water falling from a flange portion of the vent body, and a decorative frame disposed so as to cover the opening of the ceiling plate from the indoor side , wherein the water receiving portion is provided with a flange of the vent body. Part of
It is configured to receive the lower end and position the vent body.
It is a thing.

[0009]

[0010]

According to the ceiling ventilation fan of the first aspect, the water receiving portion for receiving the water falling from the flange portion of the ventilation hole body is provided on the mounting plate whose lower portion is inscribed in the wooden frame of the opening of the ceiling plate. Water droplets generated by dew condensation on the inner surface of the vent hole and leaking from the gap between the flange portion of the vent body and the mounting plate are received by the water receiving portion, and the mounting plate and the ventilation fan main body are formed. The air is guided into the gap between the contact surfaces and is discharged into the room from the tips of the flange portions of both. And the water receiver
Receiving the lower end of the flange portion of the vent body,
If it is configured to position the air vent,
Fewer screw or spot welds to install
It is not necessary to have
No.

[0011]

[0012]

[0013]

[0014]

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In FIG. 2, the ventilation fan body 8 has a blower 11 composed of a fan 9 and a fan drive motor 10 disposed therein, and has an opening 8a on the lower surface. Is formed with a flange portion 8b at the periphery thereof. An exhaust port 8c as a vent is formed on the right side surface of the ventilation fan main body 8, and the opening 8
In FIG. 3A, a forked spring 12 is provided for detachably mounting the decorative frame 13. An engagement recess 8d is formed at a position at a predetermined distance from the right end of the upper surface of the ventilation fan main body 8.

On the other hand, the metal mounting plate 14 has a communication port 14a formed at the upper part, a flange part 14b formed at the lower end part, and an upper end part bent at the upper end part to form the locking part 14c. It is a formed configuration.

As shown in FIG. 1B, an exhaust port body 15 serving as a ventilation port body has a rectangular flange portion 15 formed at a base end portion.
a, and has a substantially cylindrical shape tapered so that the diameter decreases from the base end to the tip as in the conventional example. The exhaust port body 15 is attached to the mounting plate 14 by spot welding the flange portion 15a to the mounting plate 14, and communicates with the communication port 14a.

The mounting plate 14 to which the exhaust port body 15 is fixed.
At a position at a predetermined distance from the lower end of the flange portion 15a of the exhaust port body 15, the water receiving portion 14d is positioned on the side of the exhaust port body 15 with a length equal to or longer than one side of the lower end of the flange portion 15a. It is formed by raising.

Next, the mounting plate 14 and the ventilation fan body 8
The procedure for installation on the ceiling will be described. The interior of the building is covered by a ceiling plate 16 inside a bathroom 16a and a ceiling 16b.
The exhaust duct 17 is installed on the side of the ceiling 16b. The lower part of the mounting plate 14 is a ceiling plate 16 with the exhaust port body 15 connected to the exhaust duct 17.
In this state, the flange portion 14b is attached and fixed to the wooden frame 18 by screws (not shown) or the like. Then, the ventilation fan body 8 is inserted into the opening of the wooden frame 18 from the indoor side, and the flange portion 8b is inserted.
Are fixed to the wooden frame 18 by screws or the like (not shown).

At this time, the locking portion 1 at the upper end of the mounting plate 14
The mounting position of the ventilation fan main body 8 with respect to the mounting plate 14 is determined by engaging the tip of 4c with an engagement recess 8d formed on the upper surface of the ventilation fan main body 8. The right side surface of the ventilation fan body 8 contacts the mounting plate 14, and the exhaust port 8 c communicates with the exhaust duct 17 via the communication port 14 a of the mounting plate 14 and the exhaust port body 15. Also,
One side on the right side of the flange portion 8b of the ventilation fan body 8 is:
It overlaps with the flange portion 14b of the mounting plate 14 from below.
Finally, the decorative frame 13 is attached to the ventilation fan main body 8 by the spring 12 so as to cover the opening 8a from the bathroom 16b, which is the indoor side.

The operation of the present embodiment in the above configuration will be described. When the fan 9 is rotationally driven by the fan drive motor 10 of the blower 11, air containing water vapor inside the bathroom 16b is taken into the ventilation fan main body 8 through the opening 8a and formed on the right side surface of the ventilation fan main body 8. Exhaust 8
c, it is discharged to the exhaust duct 17 via the communication port 14a of the mounting plate 14 and the exhaust port body 15.

The water droplets 19 formed by the dew condensation caused by the air containing the water vapor contacting the inner surface of the exhaust port body 15 having a relatively low temperature are formed into the tapered inner surface of the exhaust port body 15. Is moved toward the base end, and when it comes to the junction between the exhaust port body 15 and the mounting plate 14, it penetrates into the gap between the two, and furthermore, the flange section 15 a of the exhaust port body 15
Leaks from the lower end of the mounting plate 14 and falls down along the surface of the mounting plate 14. Then, the water droplet 19 eventually reaches the water receiving portion 14d of the mounting plate 14 below it, penetrates into the gap between the contact surface of the mounting plate 14 and the ventilation fan main body 8 therefrom, and falls down along the gap. .

When the water droplet 19 reaches the flange portion 14b of the mounting plate 14 and the front end of the flange portion 8b of the ventilation fan main body 8, the water droplet 19 leaks out therefrom and falls into the bathroom 16a.

Therefore, according to the present embodiment, even if the water droplet 19 leaks out of the joint portion between the flange portion 15a of the exhaust port body 15 and the mounting plate 14, the water receiving portion 1 provided thereunder is provided.
4d guides the water droplets 19 between the mounting plate 14 and the contact surface between the ventilation fan main body 8 and discharges them into the bathroom 16a.
It does not take on. Therefore, the wooden frame 18 and the ceiling plate 16
Can be prevented from being rotten by water droplets 19, and there is no danger that the mounting strength of the ventilation fan body 8 is insufficient, and no mold is generated.

Further, by providing the water receiving portion 14d on the mounting plate 14, unlike the improved technology disclosed in Japanese Utility Model Publication No. Sho 62-14513, the wooden frame 18 is made large and the space between the wooden frame 18 and the ventilation fan main body 8 is increased. There is no need to provide an interval between the mounting plates 14 and the lower portion of the mounting plate 14 is inscribed in the wooden frame 18.
Since the right side of the ventilation fan body 8 is configured to be in contact with 4, the flange portion 8b, the wooden frame 18, and the decorative frame 13 of the ventilation fan body 8 do not become large.

Since the exhaust port body 15 is fitted and connected to the exhaust duct 17, if this part is not sufficiently sealed, water droplets leak from the contact portion between the exhaust port body 15 and the exhaust duct 17. Can be considered, but even in this case,
The water droplets flow down the tapered outer surface of the exhaust port body 15 and flow down to the lower end of the flange portion 15a, so that they can be received by the water receiving portion 14d in the same manner.

FIGS. 3A and 3B show a second embodiment of the present invention.
An example will be described. 1A and 1B are denoted by the same reference numerals, and only different portions will be described below. In the second embodiment, the lower end 15a 'of the flange portion 15a is provided.
Is received by the water receiving portion 14d, and the flange portion 15
The exhaust port body 15 is fixed to the mounting plate 14 by screwing the upper two portions of a with screws 20.

In the above configuration, the mounting position of the exhaust port body 15 on the mounting plate 14 is determined by the position of the water receiving portion 14d, and the lower portion of the flange portion 15a of the exhaust port body 15 is It is fixed by the water receiving portion 14d. Then, water droplets 19 generated on the inner surface of the exhaust port body 15 are formed.
Is the lower end 15 of the flange portion 15a as in the first embodiment.
If it leaks out from a ', it will be immediately received by the water receiving part 14d at that time, and will be guided between the mounting plate 14 and the contact surface of the ventilation fan main body 8.

Therefore, according to the second embodiment, the same effects as in the first embodiment can be obtained, and the mounting position of the exhaust port body 15 is determined by the formation position of the water receiving portion 14d on the mounting plate 14. Since the positioning of the exhaust port body 15 does not need to be performed independently, and the lower portion of the flange portion 15a is also fixed by the water receiving portion 14d, it is possible to reduce the number of places where screwing (or spot welding) is performed.

FIG. 4 shows a third embodiment of the present invention. FIG.
3A, only the wooden frame 18, part of the mounting plate 14 and its flange 14e, and part of the ventilation fan main body 8 and its flange 8b are shown. The configuration of other parts is the same as that of the first embodiment. In the third embodiment, the tip of the flange portion 14e instead of the flange portion 14b of the mounting plate 14 is formed so as to protrude laterally by a length A from the tip of the flange portion 8b of the ventilation fan main body 8. I have.

In the above configuration, the water droplet 19 guided to the gap between the contact surface between the ventilation fan main body 8 and the mounting plate 14 leaks out from the tip of the flange portion 8b of the ventilation fan main body 8 soon. At this time, the tip of the flange 14 e of the mounting plate 14 in contact with the wooden frame 18 is connected to the flange 8 of the ventilation fan body 8.
Since the water droplets 19 protrude laterally by the length A from the front end of the wooden frame 18, the leaked water droplets 19 do not propagate to the wooden frame 18, so that the water droplets 19 wet the lower surface of the wooden frame 18. There is no.

FIG. 5 shows a fourth embodiment of the present invention. In FIG. 5, as in the third embodiment, only the wooden frame 18, a part of the mounting plate 14 and its flange 14b, and a part of the ventilation fan main body 8 and its flange 8e are shown. The configuration of other parts is the same as that of the first embodiment. In the fourth embodiment, the tip of the flange 8e instead of the flange 8b of the ventilation fan body 8 is bent downward at an angle α so as to be separated from the flange 14b of the mounting plate 14.

In the above configuration, the water droplets 19 guided to the gap between the contact surface between the ventilation fan main body 8 and the mounting plate 14 eventually form the contact surface between the flange portion 14b of the mounting plate 14 and the flange portion 8e of the ventilation fan main body 8. Leaks from the end of the flange portion 8e and moves along the slope of the curved tip portion of the flange portion 8e,
It is discharged into the bathroom 16a. At this time, the flange portion 14b of the mounting plate 14 in contact with the wooden frame 18 and the ventilation fan body 8
Of the flange portion 8b is separated from the tip portion bent at an angle α, so that the leaked water droplet 19 does not propagate to the wooden frame 18, and therefore, the water droplet 19 Never get wet.

FIG. 6 shows a fifth embodiment of the present invention. In FIG. 6, the wooden frame 18 and the mounting plate 14 are similar to the third and fourth embodiments.
And only its flange 14f and part of the ventilation fan body 8 and its flange 8b are shown. The configuration of other parts is the same as that of the first embodiment. In the fifth embodiment,
Flange part 14 replacing flange part 14b of mounting plate 14
f is formed so as to protrude laterally by a length B from the front end of the flange portion 8b of the ventilation fan main body 8,
The tip is bent at an angle β so as to be separated from the lower surface of the wooden frame 18.

In the above configuration, the water droplet 19 guided to the gap between the contact surface between the ventilation fan main body 8 and the mounting plate 14 eventually becomes the contact surface between the flange portion 14f of the mounting plate 14 and the flange portion 8b of the ventilation fan main body 8. , That is, from the end of the flange 8b, moves along the slope of the bent end of the flange 14f, and is discharged into the bathroom 16a. At this time, since the wooden frame 18 is separated from the tip of the flange portion 14f of the mounting plate 14 bent at an angle β, the leaked water droplet 19 does not propagate to the wooden frame 18, Therefore, similarly to the third and fourth embodiments, the wooden frame 18
Never wet the underside of

FIG. 7 is a perspective view of a main part showing a sixth embodiment of the present invention. In the sixth embodiment, the exhaust port 1
A flange portion 15b having a pair of inclined portions 15c at the lower portion is formed at the base end portion of No. 5, and the water receiving portion 14g is cut by attaching the mounting plate 14 to the front end of the inclined portion 15c so as to have a slight width back and forth. Formed by waking.

When the vent body 15 having such a flange portion 15b is used, the flange portion 15b and the mounting plate 14
The water droplets 19 leaking from the gap between the joints of FIG.
, And gathers at the tip of the inclined portion 15c, leaves the flange portion 15b from there, and reaches the water receiving portion 14g. Therefore, in the sixth embodiment, the length of the water receiving portion 14g can be configured to be shorter than the length of the water receiving portion 14d in each of the above embodiments, so that the structural strength of the mounting plate 14 can be increased.

In each of the above embodiments, the exhaust port 15 is for discharging air from the bathroom.
In the case of a two-room simultaneous exhaust configuration, it is also possible to function as an intake port for sucking the exhaust from the bathroom into the ventilation fan main body. To be provided.

In addition, the present invention is not limited to the above embodiments, but may be applied not only to a bathroom, but also to a cooking room. Can be implemented.

[0040]

As is apparent from the above description, according to the ceiling ventilation fan of the first aspect, the metal part whose flange is attached to the wooden frame while being inscribed in the wooden frame at the opening of the ceiling plate. The water receiving part that receives the water that falls from the flange part of the vent body is formed by cutting and raising the mounting plate made of aluminum, so that it is generated by dew condensation on the inner surface of the vent body and leaks from the gap of the flange part of the vent body. The water droplets are guided by the water receiving portion between the contact surface between the mounting plate and the ventilation fan main body, and are discharged into the room from the ends of both flange portions, so that there is no need to provide an interval between the wooden frame and the ventilation fan main body. In addition, water drops do not fall on the wooden frame and the ceiling plate, and therefore, it is not necessary to increase the dimensions of the wooden frame, the flange portion of the ventilation fan main body, and the decorative frame. Then, connect the water receiving part to the lower end of the flange part of the vent body.
Part to position the vent body
For example, when attaching the vent body to the mounting plate,
Requires fewer spot welds, and
There is no need for own positioning.

[0041]

[0042]

[0043]

[0044]

[Brief description of the drawings]

FIG. 1 is a configuration of a main part showing a first embodiment of the present invention;
(A) is a longitudinal sectional view, (b) is a perspective view of a mounting plate.

FIG. 2 is a longitudinal sectional view of the entire configuration.

FIG. 3 is a view corresponding to FIG. 1, showing a second embodiment of the present invention;

FIG. 4 is a longitudinal sectional view of a main part showing a third embodiment of the present invention.

FIG. 5 is a view corresponding to FIG. 4, showing a fourth embodiment of the present invention;

FIG. 6 is a view corresponding to FIG. 4, showing a fifth embodiment of the present invention.

FIG. 7 is a view corresponding to FIG. 1 (b) showing a sixth embodiment of the present invention.

FIG. 8 is a diagram corresponding to FIG. 1A showing a conventional example.

[Explanation of symbols]

8 is a ventilation fan main body, 8a is an opening, 8b is a flange, 8
c is an exhaust port (vent), 8f is a flange, 11 is a blower, 13 is a decorative frame, 14 is a mounting plate, 14a is a communication port, 1
4b is a flange portion, 14d is a water receiving portion, 14e is a flange portion, 14f is a flange portion, 14g is a water receiving portion, 15 is an exhaust port (vent), 15a is a flange portion, 15b is a flange portion, and 16 is a flange portion. A ceiling plate, 16a is a bathroom (room), 16b is a ceiling space, 16c is an opening, and 18 is a wooden frame.

──────────────────────────────────────────────────続 き Continued on the front page (58) Investigated field (Int. Cl. ⁷ , DB name) F24F 7/10 101 E04B 9/02 E04F 17/04 E04H 1/12 301

Claims (1)

(57) [Claims] 1. A metal member having a communication port at an upper part and a flange part at a lower end part, and a flange part attached to the wooden frame with the lower part inscribed in the wooden frame at the opening of the ceiling plate. A mounting plate having a flange portion at a base end thereof, the flange portion being attached to the mounting plate and communicating with the communication port; and a built-in blower, a lower surface being opened and a ventilation hole being provided on a side surface. A flange portion is formed at the lower surface opening, and the flange portion is attached to the wooden frame so as to overlap the flange portion of the mounting plate from below, so that a side surface is in contact with the mounting plate and ventilation is provided. A ventilating fan body having a mouth communicating with the vent body through the communication port, and a water receiver for receiving water that is formed by cutting and raising the mounting plate on the vent body side and that falls from a flange portion of the vent body. Part and the ceiling plate An opening; and a disposed a decorative frame to cover from the indoor side, the water receiving portion receives the lower end portion of the flange portion of the vent member
Characterized in that the vent body is positioned.
And ceiling ventilation fan.