JPS5834148B2 - Dampers for fire prevention and smoke prevention - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to fire prevention and smoke prevention dampers, and more particularly, the present invention relates to a fire prevention and smoke prevention damper. The purpose of this invention is to provide a fire prevention and smoke prevention damper that can operate at the same time.

In addition to manual operation, the fire and smoke prevention dampers are equipped with mechanical operation means that can be operated remotely, and both operate the fire and smoke prevention dampers through manual operation.

In addition to both operating means, it is required to incorporate a mechanism via a temperature fuse that can operate fire and smoke prevention dampers in response to changes in temperature within the duct.

However, the temperature in each duct of two or more fire prevention and smoke prevention dampers installed in a row is not necessarily constant, and there may be a time lag in the temperature sensing of the temperature fuse in each duct. Undeniably, it is almost impossible to implement this method without necessarily considering the possibility that proper operation cannot always be expected due to differences in temperature sensitivity of each temperature fuse itself or defects.

Therefore, the present invention eliminates the time lag in the simultaneous operation of two or more fire prevention and smoke prevention dampers arranged in a row, and the time lag in the operation of each fire prevention and smoke prevention damper via each temperature fuse. As a result of research to develop a fire prevention and smoke prevention damper that can eliminate the activation caused by temperature sensitivity differences between each temperature fuse, it has become possible to link two or more fire prevention and smoke prevention dampers installed in a row. In addition, by operating one of the temperature fuses provided in each damper, each fire prevention and smoke prevention damper can be operated simultaneously through the interlocking means for each damper. By doing so, we were able to achieve the desired effect very effectively and have therefore proposed the present invention.

Now, one embodiment of the fire prevention and smoke prevention damper of the present invention will be explained in detail with reference to the illustrated embodiment.

1.2 are fire and smoke prevention ducts arranged in parallel, 3.4
are fire and smoke prevention dampers rotatably installed inside each duct 1, 2, and each of these dampers 3゜4 is installed inside each duct 1, 2 so as to be rotatable.
They are each supported by a rotating shaft 5 passing through the space between the two.

Therefore, by rotating this rotary shaft 5 via the handle 6, the dampers 3.4 of the ducts 1 and 2 can be opened and closed at the same time in conjunction with each other.

Note that the interlocking means for the dampers 3 and 4 of the parallel ducts 1 and 2 is not limited to the case where they are connected by the same rotating shaft 5, but the means for linking the dampers 3 and 4 of the ducts 1 and 2 independently. Of course, it is also possible to construct the dampers 3 and 40 by attaching them rotatably through rotary shafts (not shown) and connecting the rotary shafts of each damper 3 and 40 via appropriate couplings or other connecting means. N configuration, each duct 1
．． This is advantageous in cases where it is not possible to connect the dampers 3 and 4 by the same rotary shaft 5 shown above due to the mounting positions of the dampers 3 and 4 between the dampers 3 and 4.

Reference numeral 7 denotes an operating box for the dampers 3 and 4, and this operating box 7 is attached to the side wall of one of the ducts 1 with screws 9 via a dowel 8 for preventing condensation.

One end 5 of the rotating shaft 5 of both the dampers 3 and 4
a is supported on the bearings 2a and 2b of one duct 2, and the other end 5b is supported on the bearings 1a and 1b of the other duct 1, respectively, and the other end 5b passes through the operation box 7,
It protrudes outward, and the above-mentioned...endle 6 is attached to the protruding end.
It is fixed.

Further, a coil spring 11 is elastically mounted on the end portion 5b of the rotary shaft 5 inside the actuating box 7, so that the rotary shaft 5 is always biased in the direction in which the dampers 3 and 4 are closed.

On the contrary, the operating rod 3 of the operating mechanism installed in the operating box
0 at the operating shaft 1T of the temperature fuse 12, the rotary shaft 7 is held in the open state of the dampers 3 and 4 against the elasticity of the coil spring 11 and set.

When the temperature fuse 12 installed in the duct 1 detects an abnormality in the temperature of the fluid passing through the duct 1,
The dampers 1 and 2 are configured to be simultaneously actuated and closed via an actuation mechanism within the actuation box 7.

That is, as shown in FIGS. 4 to 6, the temperature sensing part 13 of the temperature fuse 12 is made to protrude into the duct 1, and the case body 20
is fixed with a nut 16 to a holding case 15 installed inside the operating box γ.

The operating shaft 17 of the temperature fuse 12 is biased by a spring 18 elastically mounted in the case body 20 so that the operating end 17a thereof can be always displaced to the non-operating position, and the operating shaft 17 is biased against the elasticity of the spring 18. Attach the working end 17a to the nut 1
By fixing the lower end 17b to the temperature sensing end 13 with a molten metal 19 such as a molten alloy, the working end 17a is held at the working position.

A shaft tube 21 is fitted and fixed to the outside of the actuating shaft 17. The spring 18 is elastically loaded between the upper end 21a of this shaft tube 21 and the nut 16, and the lower end 21b is connected to the shaft tube 21 when the actuating shaft 11 is actuated. It is configured to be engaged with a stopper 22 attached to the temperature sensing end 13 to prevent the operating shaft 17 from coming off.

The working end 17a of the operating shaft 170 of the temperature fuse 12 constructed as described above resists the elasticity of the spring 18 and moves the molten metal 1
9 maintains the nut 16 in the operating position protruding upward, thereby locking the operating rod 30 of the operating mechanism in the operating box 7 in the non-operating position.

Basically, when the temperature sensing end 13 of the temperature fuse 12 senses an abnormality in the temperature of the fluid passing through the duct 1, that is, when the temperature of the fluid reaches a point where the molten metal 19 is melted, it is activated by the elasticity of the spring 18. The shaft 17 is slid downward in the direction of arrow 24 in FIG. 6, and the working end 1 of the working shaft 1T
7a is sunk into the case body 20 and displaced to the inactive position.

At the same time, the operating rod 30, which has been locked to the working end 17a, rotates about the support shaft 31 in the direction of arrow 33 in FIG. engages with the active end 35a of the locking arm 35 protruding from the locking arm 35, and the locking arm 35 resists the elasticity of the spring 37,
It is rotated about the support shaft 36 in the direction of the arrow 38 shown in the fourth figure.

Furthermore, the engaging end 40a of the locking rod 40 that is engaged and locked in the locking groove 39 of the locking arm 35 comes off from the locking groove 39, and the locking rod 40
is rotated around the support shaft 41 by the elasticity of the spring 42.
The locking rod 40 rotates in the direction of the arrow 43 in the figure, and the rotation shaft 5 resists the elasticity of the coil spring 11 that always urges the rotary shaft 5 to rotate in the direction in which the dampers 3 and 4 are closed.
It was locked to a locking piece 45 that prevents zero rotation.

When the locking end 40b of the locking rod 40 comes off the locking piece 45 and the locked state of the coil spring 11 is released,
Since the rotating shaft 5 is rotated by the elasticity of the coil spring 11, the dampers 3.4 in both ducts 1 and 2 can be simultaneously activated and closed via the rotating shaft 5.

The upper end 35b of the locking arm 35 in the operating mechanism of the dampers 3, 4 having the above structure is configured to protrude outside the operating box 7, and the protruding end 35b of the locking arm 35
By operating the temperature fuse 12, the operating mechanism is operated independently of the operation of the temperature fuse 12, and both dampers 3 and 4 can be closed.

Further, the locking arm 35 is connected to an operating piece 52 of a solenoid actuator 51 through a pin 50 in its elongated hole 35c, and the solenoid actuator 51 is actuated to move the operating piece 52 to the arrow 5 in FIG.
By pulling in three directions, it becomes possible to simultaneously close both dampers 3 and 4 in the same manner as above while rotating the locking arm 35 in the direction of the arrow 38 about the support shaft 36, and the above-mentioned solenoid The actuation mechanism is configured to be able to be operated electrically and remotely via the actuator 51.

Further, 60a- and t60b are limit switches for detecting the rotational displacement of the dampers 3 and 40, respectively, and are mounted on the upper and lower mounting plates 63a, respectively.
, 63b.

Movable contact levers 61a, 6 of both switches 60a, 60b
The switch actuating body 64 that contacts 1b is arranged to be interlocked with the rotating shaft 5.

The limit switches 60a and 60b on the relevant side are the damper 3,
The device is configured to be able to remotely detect the operation of the operating mechanism section 4, or to be used when supplying a starting signal for a required exhaust floor or ventilation floor.

A housing 70 is a torque adjustment lever configured to vary the elasticity of the coil spring 11 with respect to the rotation shaft 5 and adjust the torque of the dampers 3 and 4. The lever 70 has a long hole 71 with one end 11a connected to the rotation shaft. The other end 11b of the coil spring 11 moored to the coil spring 11 is moored, and the operating end 70a of the lever 70 is made to protrude outside the actuating box 7, and the lever 70 is moored from the outside in the direction of the arrow 72 and 73 shown in the fourth figure with the rotating shaft 5 as a fulcrum. By rotating, the elasticity of the coil spring 11 is adjusted via the long hole 71 of the lever 70.

Reference numeral 80 denotes glass wool as a heat insulating material filled in the bottom of the operating box 7.

Reference numeral 81 denotes a motor, and by driving this motor 81, the operating mechanism after being operated can be returned to the set state again through a connecting arm 82 connected to the handle 6 of the rotating shaft 5. It is composed of:

120 is a temperature fuse installed in the other duct 2,
Because it has exactly the same configuration as the temperature fuse 12 described above,
A fuse arm 122 fixed to one end 121a of an interlocking shaft 121 rotatably spanned between the ducts 1 and 2 is engaged with the working end 17a of the operating shaft 17.

The interlocking shaft 121 of this fuse arm 122 is
Spring 12 loaded on the other end 121b of interlocking shaft 121
3, it is urged to constantly rotate in the direction of arrow 124 in FIG.

The operating arm 12 is attached to the other end 121b of the interlocking shaft 121.
The protruding end 35b of the locking arm 35 attaches the locking arm 5 and protrudes the operating arm 125 to the outside of the operating box 7.
It is engaged with.

Therefore, when the temperature fuse 120 in the other duct 2 senses an abnormality in the fluid temperature in the duct 2 and operates, the engagement between the operating end 17a of the operating shaft 17 of the temperature fuse 120 and the fuse arm 122 is released. As a result, the interlocking shaft 121 is rotated by the spring 123 in the direction of arrow 124 in FIG. Arrow 38 in FIG. 4 with 35 as the supporting shaft 36
rotate in the direction.

Therefore, as described above, the rotary shaft 5 is rotated via the operating mechanism section in the operating box T, and both dampers 3 and 4 can be closed at the same time.

In FIGS. 1 to 3, 75 and 76 are inspection ports opened on the sides of the dampers 1 and 2, 127 and 128 are connecting angles between the ducts 1 and 2, and 129 is a conduit.

As is clear from the above description, according to the embodiments shown in the first to sixth figures, when either one of the temperature fuses 12, 120 provided in the fire prevention and smoke prevention ducts 1, 2 is operated, both the ducts 1, 2 are activated. The attached dampers 3 and 4 can be closed at the same time.

Furthermore, in the above-mentioned embodiment, the dampers 3 and 4 were installed in two parallel fire and smoke prevention ducts 1 and 2, but in the case of FIG. An example of application to each damper 300, 301, 302, etc. for fire and smoke prevention ducts 100, 101, 102, etc. will be shown, and the details will be explained below. Smoke duct 100, 101, 1
02, . . . The rotary shaft 5 passes through the space between the dampers 300, 301, 302, . . . in each duct. and the operating mechanism installed in the operating box 7 are exactly the same as those in the embodiments shown in the first to sixth figures, so detailed explanations of each will be omitted and the operating mechanism of the rotating shaft 5 in the operating box 7 will be omitted. The illustration of the parts is omitted, and the other illustrated parts are denoted by the same numbers.

Now, in Figure 7, 130 is fire protection from the second rank onwards.
The temperature fuse installed in each of the smoke prevention ducts 101, 102,...
It has the same structure as the temperature fuse (not shown) attached to the temperature fuse 12, that is, the temperature fuse 12 shown in FIG. 5.6.

140 is an interlocking shaft of the temperature fuse 130, which is connected to each duct 10.
0, 101, 102, . . . and a spring 1 is provided at the end 140a on the duct 100 side.
41 to urge the interlocking shaft 140 to rotate in the direction of arrow 142 in FIG. 7, which is the non-acting direction at all times.

Further, an end portion 140a of the interlocking shaft 140 is connected to a protruding end 35a of a locking arm 35 protruding to the outside of the actuation box 7 via a connecting fitting 143 and an actuation lever 144.

(See Figures 8-10). Further, an actuating arm 131 is attached to each of the second and subsequent ducts 101, 102, . 131a is always urged to rotate in the direction of action, which is the direction of arrow 134 in FIG.
while locking the working end 131a to the connecting shaft 1.
It is set by engaging with the actuating piece 155 attached to 40.

In addition, 145 is the operating bar 14 bored in the connecting fitting 143.
4, the engagement hole of the connecting piece 146, 147 is the actuation lever 144
an engagement hole with the protruding end 35a of the locking arm 35 drilled in the 14
8 is a connecting pin of the connecting piece 146, 149 is a bearing plate of the interlocking shaft 140, 150 is a boss of the connecting fitting 143, and 151 is a boss of the operating piece 155, respectively.

Now, in the second embodiment of the present invention having the above configuration, the damper 301 of each duct 101, 102, . . . when the temperature fuse 12 of the first duct 100 is activated.
, 302, .
Any one of 30 temperature fuses 130, e.g.
Now the temperature fuse 13 of the duct 102 in the third order in Fig. 7
0 operates, the temperature fuse 1300 working end 1
The actuating arm 131 that was locked to the spring 1
33 rotates in the direction of arrow 134 about the support shaft 132 as a fulcrum, and rotates the actuating piece 155 that engages with the working end 131a of the actuating arm 131 in the direction of arrow 156 in FIG.

Therefore, as the actuating piece 155 rotates, the interlocking shaft 140 is rotated in the opposite direction of the arrow 142 against the elasticity of the spring 141, and the locking arm 35 is rotated through the connecting fitting 143 and the actuating lever 144 as shown in the fourth figure. As a result of rotating in the direction of arrow 38,
Similar to the first embodiment described above, the rotating shaft 5 in the operation box
Each damper 300, 301, 30
2°... can be closed at the same time.

However, even if the temperature fuse 130 provided in the second order duct or any other duct is activated, it is possible to carry out the procedure in exactly the same way as in the case of the temperature fuse 130 provided in the third order duct 102. .

Furthermore, in the case of the above-mentioned embodiments, we have explained the case where the ducts are arranged in parallel, but when the ducts are arranged in a row in a vertical direction, in a row in a radial direction, or The method is not limited to implementation between each duct arranged in a row on the same plane, but can be implemented in the same way between each duct arranged in a row according to various arbitrary designs, and between each duct The interlocking means between each damper and temperature fuse may be configured by arbitrarily interposing connection means corresponding to the rows between each duct, such as various joints, flexible connecting rods, or various link mechanisms. In addition to these mechanical mechanisms, it is also possible to implement electrical mechanisms, such as converting the operation of one of the temperature fuses provided in each duct into an electrical signal, and converting this electrical signal into an electrical signal. Examples include a groove bottom so that each damper of each duct can be closed simultaneously through a groove.

As is clear from the above description, the fire prevention and smoke prevention damper of the present invention includes a connecting means for connecting each fire prevention and smoke prevention damper rotatably supported in each of a plurality of rows of ducts, and a connecting means for connecting each fire prevention and smoke prevention damper. A rotatable bridge is provided between an operating mechanism section that simultaneously operates the fire prevention and smoke prevention dampers, each temperature fuse having a temperature sensing section protrudingly installed in each duct, and each duct. A fuse arm that engages with the operating end of each of the temperature fuses biased in the locking direction of the mechanism section, and an operating arm that engages with the locking arm of the operating mechanism section, and an interlocking shaft, and two or more Differences in fluid temperature within the fire and smoke prevention ducts installed in a row, or time lag in sensing between the temperature fuses of each damper, and differences or defects in the sensing accuracy of each temperature fuse itself. It is possible to eliminate at once the occurrence of time lags in the operation of each damper and malfunctions caused by such factors, etc., and the accuracy of each temperature fuse provided in each damper to achieve the desired effect of each fire prevention and smoke prevention damper. It is capable of quickly and accurately exhibiting fire prevention and smoke prevention effects unaffected by differences in fluid temperature within each duct. It is.

[Brief explanation of drawings]

1 to 6 show a first embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a front view, and FIG. 4 is an operating mechanism in an operating box. FIG. 5 is a side view of the same, FIG. 6 is an enlarged side view showing how the temperature fuse is installed, FIGS. 7 to 10 show a second embodiment of the present invention, and FIG. 7 is a perspective view. , Fig. 8a is a side view of the connecting fitting, Fig. 8 is a front view thereof, Fig. 9 is a plan view of the operating lever, and Fig. 10 is a portion showing the connecting fitting and the state in which the operating lever and the locking arm are connected. FIG.

Claims (1)

[Scope of Claims] 1 Each fire prevention and smoke prevention damper is rotatably supported in each of a plurality of ducts arranged in a row, and a rotating shaft that also serves as the rotation axis of each damper passes through each duct. Alternatively, a connecting means for each fire prevention/smoke prevention damper, which is formed by connecting the rotary shafts of each damper by a flexible connecting rod or other joint, and a resilient The rotating shaft is equipped with a coil spring that biases the rotating shaft in the closing direction, a locking piece fixed to the same end, and a locking end that locks the locking piece, and rotates while urging the locking end in the release direction. The locking rod is provided with a freely supported locking rod, a locking groove that engages with the engagement end of the locking rod, and a working end of the working rod, and one of the working ends is made to protrude within the rotation range of the working rod. a locking arm rotatably supported while biasing the locking groove in a direction to release from the locking end of the locking rod; and a locking arm positioned within a rotational range that engages with the working end of the locking arm, and each of the ducts and an operating rod that is engaged with the working end of one of the temperature fuses installed in the locking arm and rotatably supported while being biased in the direction of engagement with the working end of the locking arm. The actuating mechanism section for simultaneously operating the fire prevention and smoke prevention dampers through a means, each temperature fuse having a temperature sensing section protrudingly installed in each of the ducts, and each of the ducts is rotatably spanned, and the A fire and smoke prevention device comprising a fuse arm button that engages the operating end of each of the temperature fuses biased in the locking direction of the operating mechanism, and an interlocking shaft that includes an operating arm that engages the locking arm of the operating mechanism. Damper for use. 2. The temperature fuse has an operating shaft inside the case body, and is equipped with a spring that displaces the working end of the operating shaft to a non-working position, and acts against the elasticity of the spring to move the working end of the working shaft to the non-working position. 2. The fire prevention and smoke prevention damper according to claim 1, wherein the damper is made to protrude at a certain position and the other end is fixed to the temperature sensing end of the case body with molten metal such as molten alloy.