JPH0622355Y2 - Damper operation monitoring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention mainly relates to an operation monitoring device of a fire damper.

[Prior Art] A damper as shown in Fig. 2 (a) front view (b) side view is provided in the air conditioning ventilation duct and the smoke exhaust duct. That is, a damper blade 2 which is rotatable in the duct 1, a support shaft 3, rotation stop pieces 6 and 6, a limit switch (not shown), and a fuse 5 which keeps the damper blade 2 open. It is composed of a structure equipped with each. Also, in operation, the fuse 5 melts and the damper blade 2
Rotates and stops at the positions of the operation stop pieces 6 and 6 to close,
It is effective in preventing the spread of fire and the spread of fire. To restore the closed damper blade 2, the blade opening before the operation can be set by replacing the fuse 5 and then lowering the recovery handle 8 in the clockwise direction.

However, the closing of the damper due to a malfunction causes a bad effect on the air conditioning and ventilation system and causes the environment to deteriorate. Further, regarding smoke exhaust equipment, the malfunction of closing the damper is an important problem that affects the human life because the function of exhaust smoke required when a fire occurs is impaired.

[Problems to be Solved by the Invention] A damper provided in such a duct is closed due to melting or malfunction of a thermal fuse. An inspection port is provided to distinguish these operations from the outside of the damper. But it's a difficult task. Especially for large high-rise buildings, the number of installations was large and it was extremely difficult to confirm the operating location due to the huge amount of work.

[Means for Solving Problems] In consideration of the above problems, this system constantly monitors and checks the operating state of the damper in the duct on the central monitoring panel. When the damper is closed, the position is immediately displayed on the plan view of the CRT screen, and the damper is restored on site to satisfy the functions of the air conditioning and ventilation system and the smoke exhaust facility. The damper operation monitoring device of the present invention operates by fusing the temperature fuses, a plurality of dampers provided in the duct, a limit switch provided in the damper and outputting an operation signal when the damper is operated, and a plurality of the above-mentioned plurality of dampers. The dampers are divided into groups, group repeaters provided corresponding to each group, distributed repeaters connected to the plurality of group repeaters via a signal line for transmission, and a plurality of the dispersion machines. The central monitoring panel connected to the type repeater via the signal line for transmission, and the group relay or the vicinity of the group repeater is directly driven by the operation signal of the limit switch to check the operating state of the damper. An individual indicator light to display individually is provided,
The operation signal of the limit switch is applied to the corresponding group repeaters collectively for each group, and the central monitoring board transmits the operation signal sent via the distributed repeater and the group repeater. The present invention is characterized in that the operation display of the dampers operated from signals is performed for each group, and the above problems are solved.

[Embodiment] FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, and FIG.
The figure shows the connection between the damper and the group repeater.

First, FIG. 1 shows a state in which the device of the present invention is installed in a building. Fire protection dampers FD provided in air-conditioning ventilation and smoke exhaust ducts on each floor are grouped into a group repeater GRS with one to several as one group. Connected, and a unique address is assigned to each of these group relays GRS. A plurality of these group relays GRS are further connected to the distributed relay RS. Furthermore, such a distributed repeater RS is connected to a central monitoring board RE provided in a central control room of a building or the like. Normally, the distributed repeater RS sequentially and cyclically monitors the group repeater GRS connected to the repeater RS by address polling, and the central monitoring board RE similarly monitors each distributed repeater RS by address polling. I'm watching.

FIG. 3 is a diagram showing an electrical connection relationship between the group relay GRS and the damper FD. That is, the pair of lines extending from the group repeater GRS is connected to the normally open contacts fd _1-1 , fd _2-1 , ... Fd _{n-1 of the} limit switch included in the damper FD connected to the repeater GRS. ing. The limit switch has the second contacts fd _1-2 , fd _2-2 , ...
fd _n-2 and an automatic disconnection monitoring terminating device ed, and an individual operation indicator LED for identifying an individual operation of the fire damper FD connected to the group relay GRS and a second contact f
d _1-2 , fd _2-2 , ... Fd _n-2 are connected in series and are connected to the power line extending from the group relay GRS or the distributed relay RS, and the indicator light LED is connected to these relays. Bowl G
It is used to identify which of a plurality of dampers connected to RS, RS or a group relay GRS provided in the relay GRS, RS is operated.

In such a configuration, when a specific fire protection damper FD operates, the limit switch of the fire protection damper FD is driven and the contacts fd _n-1 and fd _n-2 are closed, and the contacts fd _{1-1 to} fd in the group. _{Since n-1} are connected in parallel, the operation signal is collectively applied to the group repeater GRS, and the individual operation indicator lamp LED corresponding to the operation damper FD is turned on. Since the group repeaters GRS are each given a unique address, when the group repeaters GRS to which the operation signal is applied by the distributed repeaters RS are subjected to address polling, the operations of the group repeaters GRS are identified and stored. When the stored signal is further polled by the central monitoring board RE for the unique address of the distributed repeater RS, the signal is sent to the central monitoring board RE. Therefore, with respect to the central monitoring board RE, an identification display of the group repeater GRS to which the operation fire protection damper FD is connected is made, and the operating position can be recorded and displayed by a graphic or the like. Between the repeaters GRS, RS and between the distributed repeaters RS and the central monitoring board RE are connected by a common signal line, and if a time division multiplexed signal by a digital signal is used, the number of lines may be several, but especially The signal transmission method is not limited to this.

[Advantages of the Invention] This invention enables centralized monitoring by a group repeater, a distributed repeater, a central monitoring panel, etc., in which the fire dampers provided in the air conditioning ventilation and smoke exhaust ducts are connected in a tree shape as described above. With this configuration, the operation damper can be easily identified, and inspection and restoration can be performed quickly.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the installation of a damper operation monitoring device of the present invention in a building, FIG. 2 is a structural example of the damper, and FIG. 3 is a circuit example of a damper operation confirmation display unit. FD …… Fireproof damper GRS …… Group repeater RS …… Distributed repeater RE …… Central monitoring device LED …… Individual indicator light

 ─────────────────────────────────────────────────── ─── Continuation of front page Examiner Hidehiro Sumita (56) References JP 62-197892 (JP, A) JP 59-81791 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A plurality of dampers which are operated by melting of a thermal fuse and are provided in a duct, a limit switch which is provided in the damper and outputs an operation signal when the damper is activated, and the plurality of dampers are grouped, A group repeater provided for each group, a distributed repeater connected to the plurality of group repeaters via a signal line for transmission, and a plurality of distributed repeaters for transmission An individual display that is directly driven by the operation signal of the limit switch and individually displays the operating state of the damper near the central monitoring panel connected via the signal line of A light is provided, and the operation signal of the limit switch is applied to the corresponding group repeaters collectively for each group, and the central monitoring board is the distributed relay. And a damper operation monitoring device and performs the operation display of the damper operated from the transmission signal indicating the actuation signal sent via the group relay for each group.