JPH0614769Y2 - Damper device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an improvement of a damper device capable of automatically opening and closing a damper according to the amount of air and the temperature of air sent into a duct.

<Prior art and its problems> The fire damper device is obliged by law to close when the temperature exceeds a predetermined temperature of around 70 ℃. The conventional fire-proof damper device or smoke-proof dual damper device uses a thermal fuse arranged in a duct.
That is, the damper blade is always biased in the closing direction by a spring, and the biasing force is blocked by a lock rod having a temperature fuse interposed therebetween to hold the damper blade at a predetermined opening. Therefore, once the thermal fuse is activated and melted, it is necessary to replace the thermal fuse with a new one, and the operation confirmation of the thermal fuse is a destructive inspection, which cannot be performed. Furthermore, conventionally, an air volume adjustment control damper device having a function of adjusting the amount of air passing through the duct and a fire protection damper device having a function of blocking the duct when a fire occurs are separately provided in the same duct. Often, in this case, to separately provide the air flow rate adjustment control damper device and the fire protection damper device in the same duct, the number of parts increases, the structure becomes complicated, and its maintenance management becomes complicated, and further, There is an inconvenience that each damper device becomes a resistance factor of the air flow.

In order to solve the above problems, the present invention uses a shape memory alloy material having a transformation temperature of about 70 ° C, does not require replacement work, and has a reliable fire control and air volume control that can be remotely controlled by a motor. It is an object of the present invention to provide a damper device that also has an adjustment function.

<Means for Solving Problems> The above object of the present invention can be achieved by an apparatus having the following configuration. That is, the gist is that a ridge is provided around the inner wall surface of the duct, and both ends of a damper blade having a shape in which the peripheral portion is moored to the ridge are pivoted through the duct wall. The central axis of the double shaft mechanism is pivoted through similarly to the above, and the locking pin is projectingly provided on the outer circumference of the central axis, while it is required for the rotary axis of the damper blade penetrating the outer wall of the duct and the outer circumference of the central axis. A spindle member and a motor interlocking plate portion are respectively mounted at intervals, and a spring member is interposed between the main spindle plate portion and the motor interlocking plate portion so that the locking pin resists the urging force of the damper blade. The operation lever mounting base on which the operation lever support portion is formed is formed on the damper blade. Wearing The base of the operating lever supporting portion is pivotally attached to the base of the operating lever supporting portion so as to face the operating lever supporting portion, and the proximal end of the operating lever and the outer edge of the operating lever supporting portion are biased by a tension spring member. The opening is blocked by a locking piece that is always formed on the outer periphery of the operating lever, and the urging force of the tension spring member is set between the tip of the operating lever support portion and the tip of the operating lever at a set temperature of 65 to 75 ° C. The damper device is characterized in that a shape memory alloy member that contracts to a preset shape is connected to the damper device.

<Examples and Operations> The damper device according to the present invention will be described in detail below with reference to the drawings showing the examples.

Fig. 1 shows the damper blade in the cylindrical duct (1).
(2) can be opened and closed by the operation section (3) mounted on the outer circumference of the duct (1).

That is, (4) shows an electric motor and (5) shows an opening / closing scale, which is configured to be operated by a switch (6) from a remote location. Reference numeral (7) shows an inspection port for confirming the opening and closing of the damper blade (2) and for performing the opening and closing operation by operating the switch (6) from a remote location.

Next, as shown in FIGS. 2 and 3, a ridge (8) is provided on the inner peripheral surface of the duct (1), and a damper blade is provided on the ridge (8).
The peripheral portion of (2) is moored, and the blade bearing portions (9) and (9) are fixed to the both ends of the center of the damper blade (2) by bearing fixing metal fittings (10) and (10), and the duct (1) ) It is pivoted on the wall, and one end of the wall is extended into the operation part (3) in a communicating manner. Further, the central shaft (11) is penetratingly penetrated into the blade bearing portions (9), (9), one end of which is pivoted to the wall of the duct (1), and the other end of which is inside the operation portion (3). Extend to.

Then, the spindle plate portion is provided on the outer periphery of the blade bearing portion (9) in the operation portion (3)
(12) is integrally mounted, and the motor interlocking plate (1) is attached to the outer periphery of the central shaft (11) with a required space between the main shaft plate (12) and the main shaft plate (12).
3) is integrally mounted, and both ends of the spring member (14) are locked between the spindle plate part (12) and the motor interlocking plate part (13),
On the other hand, the locking pin (15) is projected on the outer periphery of the central shaft (11), and the locking pin (15) is urged by the urging force of the spring member (14).
Is moored to the damper blade (2), and the damper blade (2) and the central shaft (11) rotate integrally.

Therefore, an operating lever mounting base is formed in which an opening (16) straddling the central shaft (11) and in which the locking pin (15) is freely rotatable is notched, and an operating lever support (17) is further formed. (18) is attached to the damper blade (2). Next, the base of the operating lever (19) is pivotally attached to the base of the operating lever support (17) of the operating lever mounting base (18) so as to face the operating lever support (17), and the operating lever is supported. (19) The opening (16) of the operating lever mounting base (18) is cut off on the outer periphery at a position where the locking pin (15) stands upright at a substantially right angle to the damper blade (2), A locking piece (20) for locking the locking pin (15) is formed. That is, a tension spring member (21) is provided between the base portion of the operation lever (19) and the operation lever support portion (17), and the locking piece (20) is opened by the urging force of the tension spring member (21). It is a mechanism for shutting off the part (16). Further, in that state, when the set memory temperature of about 65 to 75 ° C. is reached between the operating lever support portion (17) and the tip of the operating lever (19), it resists the urging force of the tension spring member (21). Contracted, actuated lever (19)
By rotating in the direction of the arrow A, the operating lever (1
The locking pin (15) is released from the locking piece (20) of 9), and 65 to 75
When the temperature becomes lower than the set temperature of ° C, the shape memory alloy member (22) is restored to its original length and is in a state of blocking the opening (16). In this state, the stopper a extruded on the operating lever mounting base (18) is
It is designed to lock (19).

Next, FIG. 4 is a front explanatory view showing the inside of the operation portion (3), and the electric motor is attached to the outer peripheral edge of the motor interlocking plate portion (13).
A tooth-shaped portion (24) that meshes with the rotary gear (23) mounted on the drive shaft of (5) is formed, and the motor interlocking plate portion (13) freely rotates by the mesh rotation of the rotary gear (23). To do. An opening / closing scale indicator pin (25) is provided on the spindle plate (12) in a protruding manner. or
(26), (26), (26) are electric motors automatically according to the opening / closing operation of the damper blade (2) and the setting operation of the locking pin (15).
It shows a switch for stopping the rotation of (4).

In the present invention having the above structure, as shown in FIG. 5, the spring force is applied to the damper blade (2) or the ridge (8) by the biasing force of the spring member (14), and the locking pin (15) is From the unlocked state, the motor interlocking part plate (13) connected to the central shaft (11) is rotated by an electric motor (5) against the biasing force of the spring member (14), Locking pin (15)
Is locked at a substantially right angle to the damper blade (2) by the locking piece (20) of the actuating lever (19) to lock the spring biasing force of the spring member (14). That is, since the central shaft (11) and the damper blade (2) are integrated with the spring member (14) locked, the duct ( The air volume in 1) can be freely adjusted under a light load condition, and when the damper blade (2) is stopped to rotate so that the duct (1) is fully opened as shown in FIG. The locking pin (15) is in the position shown in FIG. That is, the damper blade (2) is normally stopped rotating in this state, and when the air passing through the duct (1) reaches about 65 to 75 ° C due to a fire, etc., the tip of the operating lever (19) and the operating lever (19) are activated. Lever support (17)
The shape memory alloy member (22) connected to the tip contracts to the setting memory shape, and the locking pin (15) to the damper blade (2).
Thus, the surface of the damper blade (2) is rotated by the biasing force of the spring member (14) to automatically close the duct (1).

<Effects of the Invention> As described above, according to the present invention, by utilizing the characteristic of the shape memory alloy member that is deformed to the set shape at the set memory temperature, and by incorporating this into the damper device operating mechanism, it is possible to reliably perform the operation. The duct can be closed, and it does not need to be replaced each time like a conventional fuse, and it does not take much time.Furthermore, the electric motor can be used to freely adjust the air volume by rotating the damper blade remotely. By integrating the two functions for air conditioning or for disaster prevention, various effects such as cost reduction, simplification of structure and simplification of maintenance management can be obtained.

[Brief description of drawings]

Fig. 1 is a perspective view showing the outline of the present invention, and Fig. 2 is Fig. 1 II.
-II is a cross-sectional explanatory view, FIG. 3 is an explanatory view showing the mutual relationship between the damper blade and the central axis of the present invention, and FIG. 4 is a front explanatory view showing the inside of the operating portion of the present invention, FIG. 5 and FIG. FIG. 6 is an explanatory view showing the operating state of the present invention. In the figure, (1): Duct (2): Damper blade (3): Operation part (11): Central shaft (12): Spindle plate part (13): Motor interlocking plate part (14): Spring member (15) : Locking pin (16): Opening (17): Actuating lever support (18): Actuating lever mounting base (19): Actuating lever (20): Locking piece (22): Shape memory alloy member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Kuno 4 shares of 1034 Wada, Shinoguri-machi, Kasuya-gun, Fukuoka Prefecture Kyoritsuuchi (72) Inventor Yukio Kuno 4 shares of 1034 Wada, Shinoguri-machi, Kasuya-gun, Fukuoka Formula company Kyoritsuuchi (72) Inventor Takeshi Ueno 4 shares of 1034 Wada, Shinoguri Town, Kasuya-gun, Fukuoka Prefecture Kyoritsuuchi (56) References

Claims (1)

[Scope of utility model registration request] 1. A ridge portion is provided around an inner wall surface of a duct, and both ends of a damper blade having a shape in which a peripheral portion is moored to the ridge portion are pivoted through the duct wall. The central axis of the double shaft mechanism is pivoted through in the same manner as above, and the locking pin is projected on the outer circumference of the central axis, while the rotary axis of the damper blade and the outer circumference of the central axis penetrated by the outer wall of the duct. A main shaft plate and a motor interlocking plate are respectively mounted at a required interval, and a spring member is interposed between the main shaft plate and the motor interlocking plate so that the locking pin resists the urging force of the damper. The damper blade is attached to the blade integrally with the blade, and further, an opening is formed across the central axis to allow the locking pin to freely rotate, and an operating lever support base is formed. Attach to Therefore, the base of the operating lever is pivotally attached to the base of the operating lever supporting portion in a shape of a confrontation with the operating lever supporting portion, and the operating lever base end and the outer edge of the operating lever supporting portion are urged by the urging force of the tension spring member. , The above-mentioned opening is blocked by a locking piece formed on the outer circumference of the always operating lever,
Further, a shape memory alloy member that contracts to a preset shape is connected between the tip of the operating lever support portion and the tip of the operating lever at a set temperature of 65 to 75 ° C. against the biasing force of the tension spring member. A damper device characterized in that