JPH06185782A - Ceiling recessed type ventilator - Google Patents

Abstract

PURPOSE:To provide a ceiling recessed type ventilator in which dew condensation, mold can be prevented due to flow of the air in a room to the space under a roof. CONSTITUTION:The ceiling recessed type ventilator comprises a flange externally protruding at a lower end of a ventilator body 1 formed with a suction port 2 at its lower surface and having a first flange 11 mounted at a wood frame 8 provided stepwise at a ceiling 7 and a second flange 13 covering the edge of a ceiling plate 12 provided at the ceiling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-embedded ventilation fan installed and used on the ceiling of a living room, a bathroom, a toilet or the like.

[0002]

2. Description of the Related Art In recent years, houses and office buildings have become higher-rise and more airtight, and the need for ventilation has increased. Ceiling-embedded ventilation fans that use the space above the ceiling have become the mainstream.

A conventional ventilation fan of this type is shown in FIG.
Will be described with reference to. As shown in the figure, an opening 1 provided on the lower surface of a box-shaped ventilation fan body 101 having an opened lower surface.
Bend the peripheral edge portion 103 of 02 to the flange 104
To form the upper surface of the flange 104 on the peripheral portion 10
The wooden frame 106 provided on the ceiling 105 according to the size of 3
Then, the end portion 107 is attached to the ceiling opening portion 110 formed as a ceiling plate 109 which is attached to the wooden frame 106 from the lower surface so as to match the outer periphery 108 of the flange 104.

Then, the main body 101 is projected into the ceiling portion 105, and electric wiring 112 for energizing the blower 111 provided in the ventilation fan main body 101 and the duct 11 communicating with the outside.
3 was connected in the ceiling 105.

[0005]

In the structure of such a conventional ceiling-embedded ventilation fan, a wooden frame 106 is provided on the ceiling 105 to attach the ventilation fan main body 101, and the electric wiring 112 and the duct 113 are connected. Since the ceiling board 109 must be attached after that, the ventilation fan main body 101 and the wooden frame 1
Although 06 was able to be brought into close contact with each other, it was difficult to bring them into close contact with the ceiling board 109 and cover the ceiling opening 110 formed by the wooden frame 106 and the ceiling board 109.
Therefore, the connecting portion 114 between the ceiling plate 109 and the wooden frame 106
When there is a gap in the room, especially in a hot and humid environment such as a bathroom where the water vapor pressure is higher than the outside air, room air flows out to the ceiling 105 to cause dew condensation, causing mold, or the wooden frame 10.
There were times when 6 got tired.

When a non-combustible material such as a gypsum board with a surface-treated steel plate attached to the ceiling board 109 is used, the end 107 of the ceiling board 109 comes into contact with room air to absorb moisture. There is a problem that the gap of the connection portion 114 is enlarged due to deformation or the gypsum board falling down.

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-embedded ventilation fan capable of preventing room air from flowing out to the ceiling above the ceiling to cause dew condensation and mold.

[0008]

In order to achieve the above-mentioned object, the ceiling-embedded ventilation fan according to the present invention has a first means, which is a box-shaped suction opening formed on the lower surface and a discharge opening on the side surface. A ventilating fan main body having a fan formed therein and a fan inside, and a flange portion projecting outward at a lower end portion of the ventilating fan main body, and the flange portion is attached to a wooden frame provided on the ceiling as a step shape. And a second flange portion that covers the end portion of the ceiling plate provided on the ceiling.

The second means has a structure in which the second flange portion is provided so as to be separable from the ventilation fan main body.

[0010]

According to the present invention, with the structure of the above-mentioned first means, the first flange portion of the stepwise formed flange portion is attached by abutting against the wooden frame of the ceiling portion, so that the second flange portion of the ceiling plate is attached. It is possible to cover the end portion and bring the ceiling plate into close contact.

Further, according to the structure of the second means, the second flange portion can be converted and attached according to the thickness of the ceiling plate, so that the ceiling plate can be closely attached.

[0012]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. As shown in the figure, the box-shaped ventilation fan main body 1 has a suction port 2 whose lower surface is open to the indoor side.
A discharge port 5 communicating with an adapter 4 having a connection port connected to the duct 3 on the side surface is provided, and a blower 6 is provided inside.

A flange portion is formed at the lower end of the ventilation fan main body 1 forming the suction port 2 so as to project outward, and a flange 9 is formed on the flange portion.
The first flange portion 11 having the mounting hole 10 to be mounted by and the second flange portion 13 covering the end portion of the ceiling plate 12 provided on the ceiling are formed in a stepped shape with a step.

When the ventilation fan is attached in the above structure, since the duct 3 is arranged in the ceiling portion 7, the ventilation fan main body 1 is attached before the ceiling plate 12 is attached to the ceiling surface.

Then, the ventilation fan main body 1 is mounted by abutting the first flange portion 11 on the wooden frame 8 provided on the ceiling portion 7 and screwing the screw 9 into the mounting hole 10.

Next, the end portion of the ceiling plate 12 is inserted into the gap formed by the second flange portion 13 and the wooden frame 8 to make the ceiling plate 1
The ceiling plate 12 is attached so that the second end portion is covered with the second flange portion 13.

As described above, according to the ceiling-embedded ventilation fan of the first embodiment of the present invention, the first flange portion 11 is attached to the wooden frame 8 provided on the ceiling portion 7 in abutment with the second frame portion. Since the end portion of the ceiling plate 12 is covered with the flange portion 13 and closely attached to the ventilation fan main body 1, the indoor air is prevented from flowing out to the ceiling portion 7.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIGS. 3 and 4. In addition,
The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the suction port 2 of the ventilation fan body 1
The first flange portion 11a protruding outward so as to be attached to the wooden frame 8 provided on the ceiling portion 7 at the lower end portion forming the
And a frame-shaped second flange portion 13a having a mounting hole 10 is provided in the overlapping portion 13b with a stepped cross-section having an overlapping portion 13b that is overlapped with the first flange portion 11a and is detachably attached. Form.

The step-like step of the second flange portion 13a corresponds to the thickness of the ceiling plate 12, so that the ceiling plate 12
A plurality of types of second flange portions 13a having different steps are arranged in accordance with the type of plate thickness.

In the above structure, the ventilation fan body 1 is attached to the ceiling 7
When attaching to, the second flange portion 13a formed by providing a step corresponding to the thickness of the ceiling plate 12 provided on the ceiling surface is selected, and the overlapping portion 13b of the second flange portion 13a is formed on the ventilation fan body 1. First flange portion 1
The first flange portion 11a and the second flange portion 13a in a state of being superposed on 1a are attached to the wooden frame 8 provided on the ceiling portion 7 in the mounting hole 1
It is attached with a screw 9 through 0, the end of the ceiling plate 12 is inserted into the gap formed between the second flange 13a and the wooden frame 8, and the end of the ceiling plate 12 is connected by the second flange 13a. The ceiling plate 12 is attached so as to cover it.

As described above, according to the ceiling-embedded ventilation fan of the second embodiment of the present invention, since the second flange portion 13a is provided so as to be separable from the ventilation fan main body 1, the thickness of the ceiling plate 12 at the mounting location. The second flange portion 13a formed with the optimum step can be selectively provided, and the indoor air is prevented from flowing out to the ceiling portion 7 by being installed in a state in which the ventilation fan body 1 is closely attached regardless of the installation location. The Rukoto.

[0023]

As is apparent from the above embodiments, according to the present invention, the first flange portion that abuts the wooden frame of the ceiling portion and the second flange portion that covers the end portion of the ceiling plate and adheres closely to the ceiling plate. Since it is installed, the ventilation fan main body can be attached closely to the ceiling plate, and indoor air flows out to the ceiling part, and indoor air containing moisture deteriorates or corrodes the ceiling plate end part and the ceiling plate. It is possible to provide a ceiling-embedded ventilation fan that can prevent this.

Further, since the second flange portion is provided on the ventilation fan main body so as to be separable and is formed stepwise with a step corresponding to the plate thickness of the ceiling plate, the second flange corresponding to the plate thickness at the mounting location. Can be replaced and attached to the
The adhesion of the ceiling board can be increased.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an installed state of a ceiling-embedded ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a ceiling-embedded ventilation fan of the first embodiment.

FIG. 3 is a perspective view of a ceiling-embedded ventilation fan according to the second embodiment.

FIG. 4 is a sectional view showing an installed state of a ceiling-embedded ventilation fan according to the second embodiment.

FIG. 5 is a sectional view showing an installation state of a conventional ceiling-embedded ventilation fan.

[Explanation of symbols]

 1 Ventilation Fan Main Body 2 Suction Port 5 Discharge Port 6 Blower 7 Ceiling Part 8 Wooden Frame 11 First Flange Part 11a First Flange Part 12 Ceiling Plate 13 Second Flange Part 13a Second Flange Part

Claims (2)

[Claims] 1. A ventilating fan main body having a box-like shape having a suction port formed by opening the lower surface, a discharge port formed on the side surface, and a blower provided therein, and a ventilating fan main body provided outwardly at a lower end portion of the ventilating fan main body. A first flange portion that is provided with a flange portion and is attached to a wooden frame that is provided on the ceiling portion in a stepped shape, and a ceiling buried portion that forms a second flange portion that covers an end portion of the ceiling plate provided on the ceiling. Built-in ventilation fan. 2. The ceiling-embedded ventilation fan according to claim 1, wherein the second flange portion is provided separately from the ventilation fan body.