JPH0332908Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention relates to a ventilation device that can perform forced ventilation and natural ventilation of indoor air.

(b) Prior art As a technology prior to the present invention, the Utility Model Publication No. 60-39697
There is a ventilation system described in the publication. The ventilation device includes a forced draft and a natural ventilation window that can be opened and closed, and a ventilation device main body that is installed on the indoor side of the installation opening, and a rain infiltration prevention member that has a louver and is installed on the outdoor side of the installation opening. , and a connecting cylindrical body connecting the same member and the main body. Although the above-mentioned ventilation system can perform forced ventilation and natural ventilation, it is necessary to open and close the natural ventilation window at the shutter, and if it is done manually, it depends on the installation location (opening under the floor, opening in the attic, high place). It cannot be operated and requires time and effort, and if it were made automatic, the mechanism for that would be complicated.

(c) Problems to be solved by the invention In view of the shortcomings of the prior art, the present invention provides a ventilation system that can perform efficient forced ventilation and natural ventilation without the need for opening/closing operations using the shutter section. .

(d) Means for solving the problem The present invention includes a blower installed in an opening formed in a wall, and a natural ventilation opening formed adjacent to an outdoor outlet of the blower. A ventilation chamber is formed between the fan of the device and the air outlet, a ventilation chamber is formed with a ventilation hole communicating indoors behind the natural ventilation opening, and the ventilation chamber is connected to a partition wall between the ventilation chamber and the ventilation room. forming an opening and attaching a first net to the outlet;
The problem can also be solved by attaching to the ventilation opening a third net having a lower ventilation resistance than the second net attached to the ventilation opening.

(E) Effect This invention has a lower ventilation resistance of the third mesh than the second mesh, so that the air sent into the ventilation room through the communication port is exhausted outdoors through the third mesh, and during forced ventilation, The natural ventilation openings are closed indoors rather than outdoors, and efficient ventilation is achieved.

(f) Embodiment FIG. 1 is a cross-sectional view of the ventilation device 1 of the present invention installed in an opening 15 formed in a wall under the floor W, and FIG. 2 is a perspective view of the ventilation device 1.

The ventilation system 1 has a board 2 that is attached to the edge of an opening 15 of a wall part W with screws 12, and the board 2 is divided into three parts, with natural ventilation openings 4 on both sides and an outdoor air outlet 3 in the center. are doing. A continuous insect repellent net 5 is disposed between the natural ventilation opening 4 and the outdoor air outlet 3. A ventilation chamber 16 is provided in a portion corresponding to the air outlet 3.
is formed. A ventilation chamber 17 is formed adjacent to the ventilation chamber 16 in a portion corresponding to the ventilation opening 4 . A communication port 8 is formed in a partition wall 18 between the ventilation chamber 16 and the ventilation chamber 17. The ventilation room 1
The indoor (under-floor) side wall of No. 7 is formed of a second net 9 to form a vent communicating with the indoor room.
The insect repellent net 5 is formed of one net, but a first net attached to the air outlet 3 and a third net attached to the ventilation opening 4 are formed separately. You may. The second net 9 is made of a mesh finer than that of the insect repellent net 5, and has a greater ventilation resistance than the insect repellent net 5. In other words, the ventilation resistance of the insect repellent net 5 is made smaller than that of the second net 9. Therefore, the air sent into the ventilation chamber 17 from the communication port 8 is exhausted outdoors through the insect repellent net 5, which is a net with a small resistance due to the difference in ventilation resistance. When air is not being sent into the ventilation room 17 from the communication port 8, air enters the ventilation room 17 through the insect repellent mesh 5 or the second mesh 9 due to the difference in internal pressure between indoors and outdoors and wind pressure. Natural ventilation between indoors and outdoors can be achieved.

A blower device 2 is provided in the rear opening 7 of the ventilation chamber 16.
0 is formed. The blower device 20 includes a cylindrical frame 6 that also serves as a wind tunnel, an electric motor 21 supported by a support rod installed on the frame 6, a blower blade 22 driven by the electric motor 21, and the frame 6. It consists of a guard 10 attached to the suction port 23 of. The ventilation chamber 16
also serves as a mounting body for the air blower 20 to the board 2.

When the indoor air is blown outdoors by the forward rotation of the blower 20, the internal pressure of the ventilation chamber 16 is increased by the insect repellent net 5, and a part of the air is sent into the ventilation chamber 17 from the communication port 8. Therefore, the air is exhausted outdoors from the natural ventilation opening 4 through the insect repellent net 5, and efficient exhaust can be performed without the exhaust air flowing indoors again.

Note that when using the fan as an underfloor ventilation fan, you only have to consider the exhaust, but when using it as a ventilation fan in the kitchen or living room, you also need to consider the intake. In the above-described configuration, air can be taken in by rotating the blower device 20 in the opposite direction. At this time, the internal pressure of the ventilation chamber 17 and the ventilation chamber 16 decreases, and the outdoor air is efficiently taken in through the insect repellent net 5 with low ventilation resistance, and even though the natural ventilation opening 4 is formed, there is no need for a shutter body and the system is efficient. It allows for ventilation.

(g) Effects of the invention The present invention has a simple configuration in which meshes with different ventilation resistances are formed in the natural ventilation openings and the ventilation openings, and allows efficient ventilation with good operability.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the ventilator of the present invention when it is in use.
FIG. 2 is a perspective view of the ventilation system. 1... Ventilation device, 3... Air outlet, 4... Natural ventilation port, 5... Insect-proof net (first and third net), 8...
...Communication port, 9...Second mesh body (ventilation port), 15...
Opening, 16... Ventilation room, 17... Ventilation room, 18...
...Partition wall, 20...Blower device, 22...Fan.

Claims (1)

[Scope of claim for utility model registration] 1. A blower device installed in an opening formed in a wall;
a natural ventilation opening formed adjacent to the outdoor outlet of the blower, a ventilation chamber being formed between the fan of the blower and the outlet, and communicating indoors behind the natural ventilation opening; forming a ventilation chamber with a ventilation hole, forming a communication hole in a partition wall between the ventilation chamber and the ventilation chamber, attaching a first net to the air outlet, and a second net to be attached to the ventilation hole; A ventilation device in which a third net having lower ventilation resistance is attached to the ventilation opening. 2. The ventilation device according to claim 1, wherein the first mesh body and the third mesh body are formed of a single mesh body.