JP2844571B2 - Ventilation equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation and ventilation device provided on an outer wall of a building.

2. Description of the Related Art In a general house, an apartment house, and the like, a passage for communicating inside and outside air with an outer wall, that is, a ventilation ventilation device is required. In general, the ventilation passage is opened and closed by manually sliding a door provided on the indoor side. Also, in office buildings, etc., such natural outside air is taken in without the use of power for the purpose of saving energy and feeling of openness. In this case, a duct having a blowout grill on the upper surface is usually housed in the waist wall of the room. And a ventilation hole perforated in the waist wall and the outlet grille are connected through the duct.

In the ventilation system described above, in the event of abnormally strong wind or rain, strong wind or rain will enter the room and must be shut off. In the case of office services that cannot be expected from the occupants, automatic management devices as shown in FIG. 7 are used. That is, in the figure, 1 and 2 are rain gauges and anemometers usually installed on the roof of a building, and data is transmitted from these instruments to the control panel 3.
, And when it reaches a certain preset strength,
The motor 6 attached to the shaft of the damper 5 arranged in the duct 4 is operated to close the damper 5.

"Problems to be solved by the invention" Of the above-mentioned technologies, in the former case, if the resident is absent, it must be closed every time for safety and management is troublesome. You will not be able to enjoy it. Also, in the latter case, various instruments are required, and opening and closing must be controlled from the building management room using power, which is heavy equipment, the system becomes complicated and expensive, and it is hardly used in practice. And the wind speed hitting the outer wall of the building does not match the reading of the anemometer 2, so that it may not operate when necessary.

The present invention has been made in view of such problems of the prior art, and has as its object the purpose of not using any power but normally keeping the ventilation path open to provide ventilation. Although it is ensured, it is an object of the present invention to provide a ventilating device that can automatically shut off a ventilation path when a wind of a certain intensity or more occurs to prevent wind and rain.

[Means for Solving the Problems] In order to achieve the above object, the ventilation and ventilating apparatus according to the present invention includes a damper for air shielding provided in a ventilation path such as a duct, and the damper blade is opened and closed with the damper. And a lock mechanism for temporarily fixing to the bipolar position described above.

Further, a lock mechanism fixes the operating arm to the damper blade shaft, pivots the link to the operating arm, pivots the other end of the link to the slide shaft, and moves the slide shaft to the damper blade open and closed positions. The fixed ball plungers each have a concave groove fitted therein.

Alternatively, the lock mechanism fixes the operation arm to the damper blade shaft, pierces a slide groove at the other end of the operation arm, fits an implanted pin on the slide shaft in the slide groove, and attaches the damper blade to the slide shaft. In this configuration, the ball plungers fixedly provided at the open and closed positions form concave grooves into which the respective ball plungers are fitted.

Further, the lock mechanism locks the link bar at the eccentric shaft position of the damper blade, locks the other end of the link bar at one end of a linkage pivoted in the duct, and connects the other end of the linkage with a slide shaft. And a groove is formed on the slide shaft so that a ball plunger fixedly mounted at the damper blade open / close position is fitted to the slide shaft.

"Action" The damper blades temporarily held in the "open" position to ensure ventilation try to rotate in the closing direction as the wind force received by the characteristics increases, and finally the wind force reaches a certain level By the way, the lock mechanism temporarily stops at the "open" position and overcomes the holding force of the lock mechanism, and is immediately closed. There is provided a ventilator which closes automatically without any power.

Example An example will be described with reference to the drawings.

FIG. 1 shows a damper blade 7 which is usually employed for adjusting the air volume. The damper blade 7 is fixed to a shaft 9 in a duct 8, and a ridge 10 is provided in the duct 8 as a stopper in a closed position. A rotary drive motor or the like is fixed to the blade shaft, and the opening of the blade 7 can be arbitrarily set.

However, the duct 8 in which the damper blade 7 described above is interposed
Looking at the deflected state of the inside, it becomes as shown in the figure, and a negative pressure acting on the back surface of the blade causes a difference on the symmetrical side with respect to the blade axis, and this difference urges the blade 7 in the closing direction. In fact, the design of the damper is designed to take this characteristic into account and try to minimize the closing force to avoid the design complexity of a motor or the like that controls rotation. But,
The present invention reverses this characteristic. In other words, if no forced rotation mechanism is added to the damper blade 7 except for providing a temporary lock required for the “open” and “close” operations, the wind speed is not less than a certain value. When the urging force in the closing direction exceeds the holding force of the temporary lock, the unlocked blade 7 closes by itself.

FIGS. 2 and 3 show an example of the temporary lock. An operating arm 11 is fixed to a shaft 7a of the damper blade 7, a link 12 is pivoted to the operating arm 11, the link 12 is pivoted to a slide shaft 13, and the reciprocating slide 14 of the slide shaft 13 corrects the shaft 7a. Rotate in the reverse direction to open the blade 7;
Set to the “closed” position. The grooves 15a and 15b are formed on the slide shaft 13 in accordance with the positions corresponding to "open" and "closed".
Are fixed, and fixed ball plungers 16a and 16b are fitted into the concave grooves 15a and 15b.

FIGS. 3a and 3b show "open" and "closed" modes, respectively. Thus, the ventilation damper can be opened and closed above and below the slide shaft 13. Ball plunger 16 for each opening and closing
The shaft 13 is fixed at a and 16b. When the damper is opened, the slide shaft 13 is fixed by the ball plunger 16a. Since the damper blades 7 are not exactly parallel to the flow direction and receive a closing force due to drift, they are fixed by overcoming the closing force by the ball plunger 16a. When the inflow wind speed exceeds a certain value, the closing force due to the drift overcomes the fixing force of the ball plunger 16a, and the damper closes. When viewed as a natural ventilation port, the ventilation port has a water return, so it is difficult for rainwater to penetrate up to a certain wind speed, but it cannot shut off rainwater in a strong wind.

However, when a certain amount of wind is blown in, the system becomes a natural ventilation port that can automatically close the damper with a simple mechanism and prevent strong winds along with rainwater instead of a complicated system using power.

In the lock mechanism shown in FIGS. 4a and 4b, the operating arm 1 is attached to the shaft 7a.
7 is fixed, and a slide groove 18 is bored in the operation arm 17, and a slide shaft 19 is inserted into the slide groove 18.
A planting pin 20 is fitted on the slide shaft 19
The reciprocating slide 21 causes the shaft 7a to rotate forward and reverse, thereby setting the blade 7 to the "open" and "closed" postures.

The slide shaft 19 is "open" as in the previous case,
A temporary locking mechanism such as a concave groove 22, a ball plunger 23 or the like is added in accordance with a position corresponding to “closed”. FIG. 5a
1 to c show the case where the above-described one is applied to an office building or the like. FIG. 6 also shows a case where the present invention is applied to an office building or the like, but the rotation mechanism of the blade 7 is different. That is, the position of the eccentric shaft of the blade 7 is
Is pivoted, the link bar 24 is pivoted to the linkage 25,
At the other end of the linkage 25, the tip of a slide shaft 26 is pivotally fixed. In this case, there is an advantage that the temporary fixing lock mechanism can be accommodated in the duct 8.

By providing the limit switch 27 near the slide shaft as shown in FIG.
If it is possible to display which state is "closed", the open / closed state can be managed in a central control room where an unspecified number of people operate, such as an office building.

“Effects of the Invention” The present invention is configured as described above, and has the following effects.

Ventilation can be ensured without requiring any power or operation, and when the wind speed is higher than a certain level, the ventilation ventilation path can be automatically shut off to prevent entry of wind and rain into the room.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a drift of a damper, FIG. 2 is an explanatory view of a blade rotating mechanism of the present invention, FIGS. 3a and 3b are explanatory views of "open" and "closed" modes by the preceding figure, FIG. a and b are explanatory views of another rotating mechanism, a-b view in FIG. a is a bb view, and FIGS. 5a to 5c are explanatory views of a case where the present invention is applied to a ventilation duct of an office building.
FIG. 7 is an explanatory view of a case where the present invention is applied to a ventilation ventilation duct of an office building, and FIG. 7 is an explanatory view of a conventional automatic management system in an office building or the like. DESCRIPTION OF SYMBOLS 1 ... rain gauge, 2 ... anemometer, 3 ... control board, 4 ... duct, 5 ... damper, 6 ... motor, 7 ... damper blade, 7a ... shaft, 8 ... duct, 9 …… Axle stop, 10 ……
Stand, 11… Actuating arm, 12… Link, 13… Slide shaft, 14… Reciprocating slide, 15a, 15b… Groove, 1
6a, 16b …… Ball plunger, 17 …… Working arm, 18
... Slide groove, 19 ... Slide shaft, 20 ... Pin, 21 ... Reciprocating slide, 22 ... Recessed groove, 23 ... Ball plunger, 24 ... Link bar, 25 ... Linkage, 26
…… Slide shaft, 27 …… Limit switch.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masatoshi Furukawa 8-21-1, Ginza, Chuo-ku, Tokyo Inside the Tokyo head office of Takenaka Corporation (72) Inventor Shozumi Arizumi 8--21 Ginza, Chuo-ku, Tokyo No. 1 Takenaka Corporation Tokyo Main Store (72) Inventor Kozo Kodama 6-7-17 Minamicho, Tanashi-shi, Tokyo Cliff Co., Ltd. (56) References Real Opening Sho-56-101518 (JP, U) Actual Opening Sho 64-48537 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24F 7/04

Claims (4)

(57) [Claims] An air-shielding damper having damper blades biased at an initial "open" position which is not exactly parallel to the flow direction of ventilation in a ventilation path such as a duct, is provided. A temporary lock mechanism that maintains the "open" position of the damper mechanism until the wind velocity of the airflow impinging on the damper blade exceeds a certain value, and a wind speed when the wind speed exceeds a certain value and the damper blade closes. A ventilation lock provided with a temporary fixing lock mechanism for maintaining the "closed" posture until the pressure becomes equal to or less than the predetermined value. 2. A lock mechanism fixes an operation arm to a damper blade shaft, pivots a link to the operation arm, pivots the other end of the link to a slide shaft, and opens the damper blade to the slide shaft. 2. The ventilation ventilator according to claim 1, wherein each of the fixedly disposed ball plungers has a concave groove into which the ball plunger is fitted. 3. A lock mechanism fixes an operation arm to a damper blade shaft, pierces a slide groove at the other end of the operation arm, and fits an implanted pin to the slide shaft in the slide groove. 2. The ventilation ventilator according to claim 1, wherein a concave groove into which a ball plunger fixedly mounted at a damper blade open / close position is fitted is formed. 4. A lock mechanism locks a link bar at an eccentric shaft position of a damper blade, locks the other end of the link bar to one end of a linkage that is pivotally fixed in a duct, and fixes the other end of the linkage to the other end. The ventilation ventilator according to claim 1, wherein the ventilation shaft is pivotally fixed to the slide shaft, and the slide shaft is formed with a concave groove into which a ball plunger fixedly mounted at a damper blade open / close position is fitted.