JP3448453B2 - Building ventilation device and method of setting the ventilation device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building ventilation device that ventilates a plurality of rooms with a single ventilation fan.

[0002]

2. Description of the Related Art In a recent building, a ventilation fan is provided in the space above the ceiling, and the ventilation fan is connected to each ventilation port provided in the ceilings of a plurality of rooms through ducts, and a plurality of ventilation fans are provided by one ventilation fan. Ventilators that can ventilate rooms have come to be adopted.

In this way, when a plurality of rooms are ventilated by one ventilation fan, air in other rooms is prevented from flowing into the room through ducts.
As described in Japanese Unexamined Patent Publication No. 140546, a check valve (shutter) is provided rotatably at each intake-side connection portion of a ventilation fan according to a pressure difference between the atmospheric pressure in a room and the atmospheric pressure in a duct. In addition, this check valve is designed so that the amount of rotation in the opening direction is regulated by a stopper provided in the intake side connection portion, and the maximum opening degree can be obtained by operating the position of the stopper with an adjusting piece. Was being adjusted.

[0004]

However, in such a conventional ventilation device, by providing a check valve at each intake side connection portion of the ventilation fan provided in the space above the ceiling, the duct is provided indoors. Since the air in the other rooms was prevented from flowing in through it, if the check valve does not open or close due to the adhesion of dust, oil, etc., its maintenance must be performed in the space above the ceiling, which is extremely troublesome. There was a drawback that it cost.

Further, in the above conventional ventilation device, the maximum opening of the check valve is adjusted by the adjusting piece of the ventilation fan provided in the space above the ceiling, so that the ventilation of each room after the construction is completed. In order to change the air volume, the ceiling and floor had to be removed, which was very troublesome. That is, it was very difficult for the resident to adjust the ventilation air volume of the room according to the change of seasons or the purpose of use of the room.

Further, in order to adjust the balance of the ventilation air volume in each room, the maximum opening of the check valve which sets the ventilation air flow to each room must be adjusted. The ceiling and floor must be removed to adjust the maximum opening of the, which is very difficult. Therefore,
By measuring the ventilation air volume of all rooms by installing a measuring device in the ventilation port and determining the adjustment amount, work such as adjusting the opening of the grill provided in the ventilation port of each room, again ,
The method of adjusting the balance of the ventilation air volume of each room from the indoor side by repeatedly performing the measurement of the ventilation volume of each room is generally adopted, but this method requires a lot of work steps and is troublesome. Was there.

Therefore, in the present invention, focusing on the above problems,
The check valve can be easily maintained, and even after construction, the ventilation air volume of each room with a ventilation port can be easily changed and the ventilation air volume of each room can be easily balanced. The purpose is to be able to adjust.

[0008]

In order to achieve the above object, in the ventilation device for a building according to claim 1, a ventilation fan is provided in the space above the ceiling, and the intake side of this ventilation fan is provided in the ceiling of a plurality of rooms. A ventilation device for buildings, which is connected to each ventilation port through a duct to ventilate multiple rooms with one ventilation fan, and a tubular socket is fitted to the ventilation port side end of the duct. When the air pressure in the room is lower than the air pressure in the duct, the socket closes the ventilation opening by adhering to the inner peripheral surface of the main body by its own weight, and the air pressure in the room is higher than the air pressure in the duct. There is a check valve that opens the ventilation opening away from the inner peripheral surface of the socket by pressure, and the maximum amount of check valve is controlled by restricting the amount of movement of the check valve in the opening direction with a stopper. There is an opening adjustment device to adjust the opening. The opening adjusting means is provided with an operating portion that is fitted to the lower end of the socket and moves relative to the socket, and the portion of the socket visible from the inside of the socket and the operation of the opening adjusting means. For each of the divisions,
An opening degree display means for indicating the maximum opening degree of the check valve is provided.

According to a second aspect of the invention, as a method for setting the building ventilation device according to the first aspect, the opening degree of the check valve in each room is adjusted so that a preset required ventilation air volume can be obtained. The method of adjusting the capacity of the ventilation fan was adopted so that the total ventilation air volume, which is the total required ventilation air volume of the room, is obtained.
As a means of adjusting the capacity of the ventilation fan, there are means such as adjusting the air volume tap of the ventilation fan and adjusting the fan speed with an inverter, but if the capacity of the ventilation fan is insufficient, It is also possible to replace it with a high ventilation fan.

According to a third aspect of the invention, as a method for setting the building ventilation device according to the first aspect, the actual ventilation air volume of each room according to the capacity of the ventilation fan is set to the opening degree of the check valve of each room. The method of adjusting the opening of the check valve in each room is adopted so that the ventilation air volume can be reset according to the purpose of each room and read by combining with the opening adjustment means. did.

[0011]

In the building ventilation device according to the first aspect, the backflow prevention valve is provided in the socket provided in the ventilation port of the ceiling of the room, so the backflow is prevented from the inside without removing the floor or the ceiling. Valve maintenance can be performed.

Further, since the socket is provided with the opening adjusting means for adjusting the maximum opening of the check valve, the ventilation air volume of the room can be changed from the room side without removing the floor or the ceiling. it can.

Further, since an opening display means for indicating the maximum opening of the check valve is provided in each of the portion of the socket visible from the room side and the operation portion of the opening adjusting means, It is possible to know the maximum opening degree of the check valve from the indoor side without removing it, and to know the ventilation air volume of each room and the balance of the ventilation air volume of each room from the maximum opening degree.

In the setting method according to the second aspect, since the ventilation air volume of each room is the preset required ventilation air volume, optimum ventilation can be performed in each room.

In the setting method according to the third aspect, since the actual ventilation air volume of each room can be read and the ventilation air volume of each room can be reset according to the purpose of each room, optimal ventilation is performed in each room. be able to. Further, since the method is to adjust the opening degree of the check valve in each room, it is possible to work from the room side.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, based on FIGS. 1 to 6,
The building ventilation device according to the embodiment will be described in detail. Figure 6
1 is an overall view of a building ventilation device according to an embodiment. This building ventilation device is a ventilation fan F installed in an overhead space.
And the air supply side ducts D1, D2, D3 that connect the air supply side of the ventilation fan F to the ventilation openings (not shown) provided in the ceilings of the bathroom B, the washroom S, and the toilet T, and the ventilation fan F. An exhaust side duct D4 that connects the exhaust side and an exhaust port (not shown) provided on the outer wall of the building is provided, and one ventilation fan F is provided.
The bathroom B, washroom S, and toilet T can be ventilated.

FIG. 1 is an exploded perspective view of a main part of a building ventilation device according to an embodiment, FIG. 2 is a cross-sectional view showing a fully opened ventilation port of the building ventilation device according to the embodiment, and FIG. 3 is a building according to the embodiment. Cross-sectional view showing a half-opened state of the ventilation port of the ventilation device for a building, FIG. 4 is a cross-sectional view showing a fully closed state of the ventilation port of the building ventilation device according to the embodiment, and FIG. 1 is the ceiling, 2
Is a socket, 3 is a check valve, 4 is an opening adjusting means, and 5 is a ventilation cover. 1 to 5 show configurations common to the ventilation port of the bathroom B, the ventilation port of the washroom S, and the ventilation port of the toilet T.

The air supply side ducts D1, D2 and D3 have one end fitted to a ventilation port 11 provided in the ceiling 1.

The socket 2 has a cylindrical body portion 21 and
And a hollow flange portion 22 provided at one end portion of the main body portion 21, and the main body portion 21 is fitted to an end portion of the air supply side duct D on the ventilation port 11 side, The flange portion 22 is fixed to the ceiling 1.

The check valve 3 is formed in a vane shape having a parabolic side and a straight side, and two pieces are provided symmetrically in the body portion 21 of the socket 2.
A support member 31 is installed substantially horizontally in the main body portion 21 of the socket 2, and each check valve 3 has a straight side rotatably supported by the support member 31 and is inclined at about 45 °. The parabolic side is in close contact with the inner peripheral surface of the main body portion 21 when facing upward. The socket 2
A seat surface 24 is provided on the inner peripheral surface of the main body portion 21 so as to close the ventilation port 11 and to be in close contact with the parabolic side of the check valve 3.

That is, when the ventilation fan F is stopped and the air pressure in the room is lower than the air pressure in the air supply side duct D, the check valve 3 is brought into close contact with the inner peripheral surface of the main body portion 21 by its own weight. The ventilation port 11 can be closed to prevent outside air from flowing back into the room. Further, when the air pressure in the room becomes higher than the air pressure in the air supply side duct D by operating the ventilation fan F, the check valve 3 causes a differential pressure to cause the main body portion 2 to operate.
The ventilation port 11 can be opened away from the inner peripheral surface of the chamber 1 to discharge the indoor air to the outside.

The opening control means 4 is provided with the check valve 3 for backflow prevention.
For adjusting the maximum opening degree of the operating part 43 (composed of a ring part 431 and a cross part 432) rotatably fitted to the lower end part of the main body part 21 and above the center of the operating part 43. The column portion 41 is provided upright, and the stopper portion 42 is attached to the tip of the column portion 41 at a right angle to the column portion 41. The stopper portion 42 has two blades 421 facing 180 ° different directions.
Reference numeral 21 abuts the check valve 3 to regulate the amount of movement of the check valve 3 in the opening direction. In addition, two of the four pieces provided on the cross portion 432 of the operation unit 43
One of them has the direction of the blade 421, and an arrow 44 is provided at the tip of one of the blades 421. The arrow 44 serves as an opening degree display means.

On the other hand, on the lower surface of the flange portion 22 of the socket 2, the maximum opening degree of the check valve 3 is set to 0 as opening degree display means.
Scales 23 are provided for displaying in 10 steps from 9 to 9.

That is, as shown in FIG. 5I, when the operating portion 43 is set so that the arrow 44 indicates the scale 23 indicating the opening 9, the stopper portion 42 becomes parallel to the check valve 3. The check valve 3 can be moved in the opening direction until the ventilation port 11 is in a fully opened state (see FIG. 2).

When the operating portion 43 is set so that the arrow 44 indicates the scale 23 indicating the opening degree 1 to 8, the stopper portion 42 is inclined with respect to the check valve 3 and the check valve 3 is The movement in the opening direction is restricted when the ventilation port 11 is partially open (see FIG. 3). Note that FIG. 5 (ii)
Is set at a position where the arrow 44 indicates the scale 23 indicating the opening degree 4, so that the check valve 3 can be opened to the half-opened state as shown in FIG.

Further, as shown in FIG. 5 (iii), when the operating portion 43 is set so that the arrow 44 indicates the scale 23 indicating the opening 0, the stopper portion 42 is perpendicular to the check valve 3. Therefore, the check valve 3 cannot move in the opening direction. That is, even if the ventilation fan F is operated, the ventilation port 11 remains fully closed (see FIG. 4).

The ventilation cover 5 has an outer diameter larger than that of the flange portion 22 of the socket 2, and is fixed to the ceiling 1 at a position to cover the ventilation port 11 and the flange portion 22 of the socket 2. . In addition, a plurality of slits 51 are provided in the center of the ventilation cover 5 to ensure air permeability, and the filter 7 is provided on the back surface thereof.
Is provided. In this way, since the ventilation port 11 is covered with the ventilation cover 5 and the filter 7,
Dust is not sucked into the ventilation port 11 and the check valve 3 does not collide with anything.

Reference numeral 9 in the drawing is a sealing material for preventing outside air from entering the room through the space between the socket 2 and the air supply side duct D, and 10 in the drawing is the sealing material for the socket 2 in the air supply side duct D.
It is a spring piece to prevent rattling inside.

Next, a method of setting the ventilation device during construction will be described.

First, the required ventilation air volume is set according to the size and use of the room, and the opening degree of the check valve 3 in each room is adjusted to obtain this required ventilation air volume. Further, the capacity of the ventilation fan F is adjusted so that the total ventilation air volume obtained by summing the required ventilation air volumes of the respective rooms is obtained. As the adjusting means at this time, there are means for adjusting the air volume tap of the ventilation fan F and adjusting the fan rotation speed with an inverter. In addition, ventilation fan F
Whether or not the capacity of the backflow prevention valve 3 is sufficient when the ventilation fan F is operated.
It is possible to determine whether or not the ventilation fan is opened until movement is restricted by, but if the capacity of the ventilation fan F is insufficient, the ventilation fan is replaced with a ventilation fan having a higher capacity. By doing so, the ventilation air volume of each room becomes the preset required ventilation air volume, and it becomes possible to perform optimal ventilation in each room.

In addition, when the required ventilation air volume of each room is changed after the construction due to the change of season or the purpose of use of the room, the ventilation air volume of each room according to the capacity of the ventilation fan F should be By rotating the opening adjusting means to the opening of the check valve and adjusting the blade 421, the value can be read from the instruction value of the operation unit 43, and the ventilation air volume is reset according to the purpose of each room. The opening degree of the check valve 3 in each room is adjusted so that By doing so, the ventilation air volume of each room becomes the reset ventilation air volume, so that it becomes possible to perform optimal ventilation in each room.

Further, in the above ventilation device, since the backflow prevention valve 3 is provided in the main body portion 21 of the socket 2 provided in the ventilation port 11 on the ceiling of the room, the room or the ceiling 1 can be removed without removing the floor or ceiling 1. The check valve 3 can be maintained from the inside.

Further, since the socket 2 is provided with the opening adjusting means 4 for adjusting the maximum opening of the check valve 3,
The ventilation air volume of the room can be changed from the room side without removing the floor or the ceiling 1. That is, the occupant can easily adjust the ventilation air volume of the room according to the change of the season, the change of the purpose of use of the room, and the like.

Furthermore, since the scale 22 and the arrow 44 indicating the maximum opening of the check valve 3 are provided on the flange 22 and the operating portion 43 of the opening adjusting means 4 which are visible from the indoor side of the socket 2, the floor or The maximum opening of the check valve 3 of the room can be known from the indoor side without removing the ceiling 1, and the ventilation air volume of each room and the balance of the ventilation air volume of each room can be known from the maximum opening. be able to. That is, the balance of the ventilation air volume in each room can be easily adjusted from the room side. Further, at the time of construction, even when setting the maximum opening degree of the check valve 3, it is only necessary to align the arrow with the position of the scale 23 that provides the desired maximum opening degree, so the work can be performed accurately and easily.

Further, by operating the maximum opening of the check valve 3, it is possible to easily know how much the actual ventilation air volume depends on the difference in the length of the ventilation duct and the capacity of the ventilation fan. it can.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. However, it is included in the present invention. For example, in the embodiment, the ventilating device installed so that the bathroom B, the washroom S, and the toilet T can be ventilated by one ventilation fan F is shown, but it is limited to the combination of the bathroom B, the washroom S, and the toilet T. Instead, for example, ventilation of a plurality of rooms including a kitchen and living rooms may be performed. Further, in the embodiment, the example in which the check valve is composed of two pieces is shown, but the check valve may be composed of one piece, or may be composed of three pieces or more. Further, in the embodiment, the scale is provided on the socket and the arrow is provided on the operation portion of the opening adjusting means, but the arrow may be provided on the socket and the scale may be provided on the operation portion of the opening adjusting means.

[0037]

As described above, in the building ventilation device according to the first aspect, the backflow prevention valve and the opening degree adjusting means are provided in the main body of the socket provided in the ventilation opening of the ceiling of the room. In addition, since the opening display means is provided in the part visible from the inside of the socket, maintenance of the check valve, change of the maximum ventilation air volume of each room with a ventilation port, ventilation of each room The effect that the balance of the air volume can be easily adjusted from the indoor side without removing the ceiling is obtained.

In the setting method according to the second aspect, since the ventilation air volume of each room is the preset required ventilation air volume, there is an effect that optimum ventilation can be performed in each room.

In the setting method according to claim 3, since the actual ventilation air volume of each room is read and the ventilation air volume is reset according to the purpose of each room, optimum ventilation is achieved in each room. It is also possible to obtain the effect that it can be performed from the indoor side without removing the ceiling.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a building ventilation device according to an embodiment.

FIG. 2 is a cross-sectional view showing a fully opened state of a ventilation port of the building ventilation device according to the embodiment.

FIG. 3 is a cross-sectional view showing a partially opened ventilation port of the building ventilation device according to the embodiment.

FIG. 4 is a cross-sectional view showing the ventilation port fully closed state of the building ventilation device according to the embodiment.

FIG. 5 is a view of the socket as viewed from the indoor side.

FIG. 6 is a schematic overall view of a building ventilation device according to an embodiment.

[Explanation of symbols]

F ventilation fan D1, D2, D3 Air supply side duct D4 Exhaust side duct B bathroom S washroom T toilet 1 ceiling 11 ventilation openings 2 socket 21 Body 22 Flange 23 scale (opening display means) 3 Check valve 4 Opening adjustment means 42 Stopper 44 arrow (opening degree display means)

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F24F ^7/ 00-7/ ¹⁰

Claims (3)

(57) [Claims] 1. A ventilation fan is provided in the space above the ceiling, and the intake side of this ventilation fan is connected to each ventilation port provided in the ceiling of a plurality of rooms through a duct, and one ventilation fan is used for a plurality of rooms. A ventilation device for a building, wherein a tubular socket is fitted to an end portion of the duct on the ventilation opening side, and when the air pressure in the room is lower than the air pressure in the duct, the main body part is attached by its own weight. A backflow prevention valve is provided that closes the ventilation port in close contact with the inner peripheral surface of the socket and opens the ventilation port away from the inner peripheral surface of the socket by a differential pressure when the atmospheric pressure in the room is higher than the atmospheric pressure in the duct. In addition, there is provided an opening adjusting means for adjusting the maximum opening of the check valve by restricting the amount of movement of the check valve in the opening direction by a stopper portion, and the opening adjusting means includes the socket. The bottom edge of the An operation part that moves relatively to the socket is provided, and an opening display means that indicates the maximum opening of the check valve is provided in each of the portion of the socket visible from the indoor side and the operation part of the opening adjustment means. Ventilation device for buildings, which is characterized by that. 2. The method for setting a ventilation device for a building according to claim 1, wherein the opening degree of the check valve in each room is adjusted so that a preset required ventilation air volume can be obtained, and the necessary ventilation in each room. A setting method that adjusts the capacity of the ventilation fan so that the total ventilation air volume that sums the air volumes is obtained. 3. The method for setting a building ventilation device according to claim 1, wherein the actual ventilation air volume of each room according to the capacity of the ventilation fan is adjusted to the opening degree of the check valve in each room. The setting method is to read it by combining the above, reset the ventilation air volume for each room according to the usage of each room, and adjust the opening of the check valve in each room to obtain the ventilation air volume.