JPH0725548Y2 - Damper with indoor operation display - Google Patents

Description

[Detailed Description of the Invention] I. Purpose of the Invention (1) Field of Industrial Application The present invention relates to a damper device which is provided in a ventilation duct installed above the ceiling or the like to ventilate indoor air to the outside.

(2) Conventional technology In recent years, indoors such as high-rise buildings, condominiums, and general houses have become airtight due to the spread of sashes, and forced ventilation using a ventilation fan or a dedicated ventilation port is indispensable. The legal regulations are being tightened.

When this forced ventilation is installed in each room, a damper device is installed inside the ventilation duct to constantly detect the temperature of the air flowing in the ventilation duct with a sensor in case of an accident such as a fire. When an abnormal situation occurs, the duct inside the duct is automatically shut off by the blades of the damper device to prevent the duct from becoming a fire spread passage and expanding the fire.

Then, in order to confirm whether or not the blade of the damper device is operating, in a high-rise building or condominium, the rotational position of the blade rotation axis is electrically sensed and displayed on the display panel of the control room. However, some of them are managed centrally. However, it is difficult to confirm this directly while staying inside the room or in the corridor, and therefore the damper is often closed and unnoticeable.

(3) Problems to be Solved by the Invention By the way, when electrically detecting the movement of the blades of the damper device, failure of the electric system is likely to occur frequently, the structure is complicated, and the cost is high. I was there. In addition, there is no means to actually check whether the damper installed in the ceiling is operating properly or not inside the room.Due to the nature of the damper blade, it rarely operates, so rust on the bearing part There was a problem that the suffocation accident actually occurred due to inoperability or erroneous operation due to some shock, and the reliability of the operation of this type of damper was low.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide an operation display rod that interlocks with the operation of the blades of the damper. By making it possible to confirm the operating condition of the damper blades from the room by projecting it out into the room, it is easy to determine when a malfunction or malfunction has occurred, preventing accidents, etc. (EN) Provided is a damper device characterized in that it has a high height and has a simple structure, so that there are few malfunctions, and that the operation indicating rod protruding into the room after the operation of the blade can also serve as the return operating rod.

II. Configuration of the Invention (1) Means for Solving the Problems To achieve the above object, the invention is arranged on the back side of the ceiling or the like and is rotatably supported in the damper frame 7 by rotation. Rotating the shaft 6 and the blade 8 fixed to the rotary shaft 6 in a normally open state, releasing the lock at a predetermined temperature or more and rotating the rotary shaft 6 to close the flow path with the blade 8. A damper device having a mechanism 9 and the rotating shaft 6
A conversion mechanism 20 fixed to the conversion mechanism 20 for converting the rotation operation of the rotation shaft 6 into a linear operation or giving the rotation operation to the rotation shaft 6, and the rotation shaft 6 connected to the conversion mechanism 20.
In synchronization with the rotating operation, the operation indicator bar 21 is moved to and from the ceiling and the like while the end portion penetrates the ceiling and the like.

(2) Operation The indoor operation display damper according to the present invention includes a conversion mechanism that is linked to the blade rotation mechanism to convert the rotational movement of the rotary shaft into a linear movement, and an operation display rod that is linked to the conversion mechanism. By projecting the lower end of the operation indicator rod into the room, the operation indicator rod rises to the ceiling surface when the damper device is in the open state, and the lower end of the operation indicator rod descends from the ceiling surface when the damper device is in the closed state. The open / closed state can be accurately confirmed in the room, an accident such as an accident can be prevented, and the return operation of the blade can be performed from the room by a simple operation of pushing up the operation indicating rod.

(3) Embodiment Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 3 show an indoor operation display damper 1 according to the present invention.

In the figure, a damper 1 with an indoor operation display is provided in communication with a ventilation duct 2 that is installed above the ceiling of a building, one end of the ventilation duct 2 is connected to a ventilation door 4 that is arranged on a ceiling plate 3, and the other end Is connected to the ventilation hole 5 provided on the outer wall.

In the normal state shown in FIG. 1 and FIG. 2, the indoor operation display damper 1 keeps the internal blades open and allows the indoor air sucked by the ventilation fan 4 to ventilate to the outside through the ventilation duct 2. Therefore, in the event of an abnormality such as a fire, the damper 1 with an indoor operation display protects the internal blades from being closed and prevents the fire from spreading through the ventilation duct 2 as shown in FIG.

As shown in FIGS. 4 to 7, the indoor operation display damper 1 is capable of blocking the inside of the damper frame 7 by the rotating shaft 6 rotatably supported by the damper frame 7. The blade 8 is fixed in this manner, and the blade rotating mechanism 9 that locks the blade 8 in the normally open state and releases the lock at a predetermined temperature or more to close the inside of the damper frame 7.

The blade rotating mechanism 9 is connected to one end of a rotary shaft 6 to which the blade 8 is fixed and a base frame 10 attached to the front surface of the damper frame 7, and a rotary shaft end 11 through which the base frame 10 penetrates and projects.
And an operating plate 12 fixed to the tip of the rotary shaft end 11,
It is fitted between the base frame 10 and the operating plate 12, one end is fixed to the base frame 10 side, and the other end is the operating plate 12
And a coil spring 13 for holding the blade 8 in an open state at all times. A shaft cover 14 is fixed to the base frame 10 so that one end of the shaft spring 14 covers the outer periphery of the coil spring 13. Actually, one end of the coil spring 13 is fixed to the shaft cover 14.

When the operating plate 12 is rotated counterclockwise as shown in FIGS. 5 and 6 against the elastic force of the coil spring 13, the lower end of the engaging element 15 pivotally attached to the inner surface of the operating plate 12 becomes the pin 16. When the temperature of the locking frame 17 is set in the damper frame 7 from the base frame 10 as shown in FIG.
The lower end of the blade is locked and the blade 8 maintains the open state.

When the temperature of the air flowing through the damper frame 7 rises above a predetermined temperature, the temperature sensing element 19 of the temperature locking portion 17 operates and the locking force of the engaging groove 18 is released, so that the operating plate 12 rotates. The blade 8 is rotated 90 degrees in the clockwise direction together with the blade 6, and the blade 8 is kept closed.

In the present invention, the characteristic feature is that an operation indicating rod that interlocks with the operation of the damper blade is provided.
A conversion mechanism 20 that is fixed to the rotary shaft 6 and that converts the rotary motion of the rotary shaft into a linear motion, and an operation that is connected to the conversion mechanism 20 and that moves forward and backward toward the indoor side in synchronization with the rotary motion of the rotary shaft 6. It is equipped with a display bar 21.

As shown in FIGS. 1 to 3 and 5, the conversion mechanism 20
Includes an arm rod 22 projecting from the operating plate 12 fixed to the rotary shaft end 11, and a ball joint 23 provided at the tip of the arm rod 22, the upper end of which is connected to the ball joint 23. The lower end of the operation indicating rod 21 is pivotally supported by a bearing 24 provided on the ceiling plate 3. Then, as shown in FIG. 1, when the blade 8 is in the normally open state, the arm rod 22 of the conversion mechanism 20 is displaced obliquely upward so that the lower end portion of the operation indicating rod 21 is located at substantially the same position as the ceiling surface. , Which confirms that the blade 8 is closed.

Next, when the temperature of the air flowing through the ventilation duct 2 rises above the set temperature, the engagement of the engagement element 15 by the temperature engagement portion 17 is released, and the rotary shaft 5 is actuated by the elastic force of the coil spring 13.
And the blade 8 is closed by rotating 90 degrees clockwise,
As shown in FIG. 3, when the arm rod 22 of the conversion mechanism 20 is displaced obliquely downward, the lower end of the operation indicating rod 21 descends from the bearing 24 into the room and the blade 8 is operated in the closed state. It can be easily confirmed.

If the damper malfunctions and the blades 8 are closed and the lower end of the operation indicating rod 21 descends, the lower end of the operation indicating rod 21 is pushed up and the rotary shaft 6 is rotated counterclockwise via the operating plate 12. The blade 8 is rotated by locking the engagement element 15 to the temperature locking portion 17.
The open state can be maintained to prevent the occurrence of accidents and the like.

Further, FIGS. 8 and 9 show another embodiment of the present invention. In the figure, a conversion mechanism 20 includes an arm rod 22 projecting from an actuating plate 12 fixed to a rotary shaft end 11, and the arm rod 22.
A first ball joint 23a provided at the tip of 22 and a second ball at the lower end connected to and suspended from the first ball joint 23a.
A short operating indicator rod 21 including a connecting rod 25 provided with a ball joint 23b and having an upper end connected to the second ball joint 23b is pivotally supported by a bearing 24 of the ceiling plate 3. Then, when the arm rod 22 rotates, the connecting rod 25 tilts while correspondingly absorbing the strain, and the operation display rod 21 can be smoothly guided up and down.

The damper of the present invention is not limited to the above-mentioned embodiment, and the actuator rod may be configured to move forward and backward in the upper portion of the side wall near the ceiling plate, or simply on the back side of the partition wall. A damper may be arranged so that the actuating rod projects into the room or corridor. Further, it may be used not only for ventilation switching, but also as a damper for adjusting the air volume.

III. Effect of the Invention As described above, the damper with indoor operation display according to the present invention has a conversion mechanism for linearly converting the rotation of the rotation axis to the rotation axis of the blade, and an operation display linked to this conversion mechanism. The opening / closing state of the damper device can be accurately confirmed indoors by moving the end portion side of the operation indicating rod forward and backward toward the ceiling side while penetrating the ceiling side.

In addition to preventing accidents such as accidental accidents due to blade malfunctions, the blades can also be returned from the room side by a simple operation that pushes up the operation indicator bar. The safety of the damper can be maintained for a long time.

[Brief description of drawings]

FIG. 1 is a front view of a damper with an indoor operation display according to the present invention installed in the ceiling, FIG. 2 is a view taken along the line AA of FIG. 2, and FIG. 3 is an indoor operation when the blades are closed. Front view of the damper with display, FIG. 4 is an enlarged cross-sectional view showing the inside of the damper with indoor operation display, FIG. 5 is an enlarged front view of the blade rotation mechanism, and FIG. 6 is a partially cut-away front view, FIG. 7 is an enlarged plan view of the temperature locking portion, FIG. 8 is a front view of an embodiment in which a ball joint is provided at an intermediate position of the operation indicating rod, and FIG. 9 is a view taken along the line BB. 1 ... Damper with indoor operation display, 2 ... Ventilation duct, 3
...... Ceiling board, 6 ...... Rotary axis, 7 ...... Damper frame, 8 ......
Blades, 9 ... Blade rotation mechanism, 12 ... Operating plate, 17 ... Temperature locking part, 18 ... Engaging groove, 20 ... Conversion mechanism, 21 ... Operation indicator rod, 22 ... Arm rod, 23 ...... Ball joint, 24 ...... Bearing

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yukio Kuno Inventor 1034-4 Wada, Shinoguri-machi, Kasuya-gun, Fukuoka Prefecture Kyoritsu Co., Ltd. (72) Takeshi Ueno 1034-4 Wada, Shinoguri-cho, Kasuya-gun, Fukuoka Shikisha Kyoritsunai (56) Bibliography Sho 62-63642 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A rotary shaft, which is disposed on the back side of a ceiling or the like and is rotatably supported in a damper frame, and a blade fixed to the rotary shaft, which is kept open at a predetermined temperature or higher. A damper device having a blade rotation mechanism that unlocks the lock and rotates the rotary shaft to close the flow path with a blade, and is fixed to the rotary shaft, and the rotary operation of the rotary shaft is changed to a linear operation, or A conversion mechanism that converts the rotary shaft so as to give a rotary motion, and an end portion that moves forward and backward toward the ceiling or the like while penetrating the ceiling or the like in synchronization with the rotary motion of the rotary shaft, which is connected to the conversion mechanism. A damper with an indoor operation display, which includes an operation display rod.