JP3172835B2 - Sprinkler fire extinguishing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint used in a sprinkler fire extinguishing system, and more particularly to a joint provided with a function of detecting flowing water.

[0002]

2. Description of the Related Art In a conventional house sprinkler fire extinguishing system, if dedicated pipes are provided as in a building sprinkler fire extinguishing system, the construction becomes large-scale and expensive. For this reason, a closed sprinkler head is branched and connected via a joint in the middle of a water pipe provided with a kitchen faucet at the end, for example. Is sprayed into a room such as a living room.

[0003]

In a fire extinguishing system for a house, the closed sprinkler head is connected to a water supply pipe which is always used for daily life and sanitation. A running water detector such as a running water detection valve for detecting and informing has not been provided.

[0004] This is different from a sprinkler fire extinguishing system for buildings in which a closed sprinkler head is connected to a dedicated fire extinguishing pipe and running water is generated only when the sprinkler head operates. This is because, even if a running water detector is provided in the resulting water pipe, the running water detector malfunctions every time a faucet or the like is opened.

It is conceivable to provide a flow meter at each of the main valve side of the water supply pipe and the terminal side where the faucet or the like is provided, and determine whether or not the sprinkler head has operated based on the flow rate difference between the two. In this case, the structure is very complicated and expensive, and is not practical for residential use. Therefore, an object of the present invention is to provide a joint that can easily and reliably detect only flowing water due to the operation of a sprinkler head in a pipe.

[0006]

SUMMARY OF THE INVENTION The present invention provides a T-shaped or Y-shaped joint body having an inlet, an outlet, and a branch passage, and a closed fire extinguisher connected to the branch passage of the joint body. Sprinkler head for, comprising a water pipe connected to the inflow port and the outflow port, when a faucet or the like provided in the water pipe is opened, sprinkler fire extinguishing equipment in which flowing water is generated from the inflow port to the outflow port, A water flow detector for detecting flowing water due to the operation of the closed fire extinguishing sprinkler head is provided in the branch passage portion of the joint body, and the water flow detector is provided through the side wall and the branch passage portion of the joint body. A rotating shaft, and a vane plate provided in the branch passage portion and attached to the rotating shaft. The vane plate moves a portion near the inflow port from the water supply pipe to the flow path to the pipe. Exit section Ri is attached to the rotary shaft biased to to be longer, the vane plate is characterized in that the rotating only by flowing water of the action due to the operation of the closed fire extinguishing sprinkler head.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of an embodiment of the present invention, wherein 1 is a water main pipe, 2 is a water pipe as a pipe in a house connected to the water main 1 via a main valve 3 and a water meter 4. . 5 is a kitchen faucet, for example, and 6 is a water discharge valve for a flush toilet. 7 is a T-shaped or Y-shaped joint or the like provided in the middle of the water pipe 2, 8 is a closed-type fire extinguishing sprinkler head branched and connected to the joint 7, and 9 is a joint between the joint 7 and the closed-type sprinkler head 8. A running water detector 10 connected in series is connected to the output of the running water detector 9 to indicate an alarm device which indicates which closed sprinkler head 8 has been operated, and 11 is an emergency bell of the alarm device 10. .

FIG. 2 shows one embodiment of the flowing water detector 9.
(A) is a longitudinal sectional view, (B) is a BB sectional view of (A),
(C) is a partially cutaway side view. In FIG. 2, reference numeral 91 denotes a main body having a threaded portion provided on the upper end and lower end side,
A rotating shaft provided through the side wall of the rotating shaft 1;
The blades 94 biased to 2 are mounted on a rotating shaft 92.
A magnet attached to the end of the main body 91 protruding outside, a proximity switch 95 provided on an outer wall portion of the main body 91 and turned on by rotation of the magnet 94, and a blade 96 for a water pressure change caused by ordinary flowing water in the water supply pipe 2. A torque spring 97 applies a torque to the rotating shaft 92 so that the rotating shaft 92 does not rotate. 97, an O-ring for sealing a penetrating portion of the rotating shaft 92; 98, a stopper against which a magnet 94 for preventing reverse rotation of the rotating shaft 92 abuts.

Next, the operation will be described. When the faucet 5 is opened and running water is generated in the water supply pipe 2, or when the tap water is closed and the flow of water is stopped, a water pressure change occurs in the water supply pipe 2 and in the branch from the pipe 2 to the closed sprinkler head 8. The change in the water pressure acts on the blade 93 of the flowing water detector 9 to rotate the rotating shaft 92. But rotation axis 9
2 does not rotate due to the action of the torque spring 96, and the proximity switch 95 does not turn on.

[0010] Sprinkler head 8 closed by fire
When the valve operates and the valve is opened, the water in the water supply pipe 2 is supplied to the closed type sprinkler head 8 from the joint 7 through the flowing water detector 9 and sprinkled.

At this time, the water flowing through the flowing water detector 9 causes the blade plate 93 to rotate against the torque spring 96, and
The magnet 94 attached to the second 2 is rotated. The proximity switch 95 is turned on by the rotation of the magnet 94, and outputs an operation signal to the alarm device 10 via the signal line L1. The alarm device 10 activates, for example, a receiving relay (not shown) in response to the operation signal, and the emergency contact is provided by its make contact.
1 is sounded to notify that the closed type sprinkler head 8 has been operated, and an indicator light (not shown) is turned on to indicate which sprinkler head 8 has been operated.

FIG. 3 shows one embodiment of a joint 70 with a running water detection function in which the running water detector 9 is integrated into the fitting 7 (A).
Is a longitudinal sectional view, and (B) is a BB sectional view of (A). In FIG. 3, reference numeral 71 denotes a joint body; 72, a branch path to which the closed-type sprinkler head 8 is connected directly or via a pipe; 92, a rotating shaft provided through the side wall of the branch path 72; Reference numeral 93 denotes a blade plate which is attached to the rotating shaft 92 so as to be deviated similarly to FIG. When this blade plate 93 is biased so that the portion near the inlet 73 from the water pipe 2 is longer than the portion near the outlet 73 to the water pipe, the blade 93 rotates against pressure fluctuation due to flowing water in the normal water pipe 2. This is advantageous for suppressing operation. In addition, the joint 70 in which the running water detector 9 is integrated with the parts 94 to 97 which are the same as those in FIG. 2 operates the closed type sprinkler head 8,
When running water for sprinkling occurs, the branch path 72
In the same manner as described above, the flowing water detecting blade plate 93 provided therein rotates by the action of flowing water, and the proximity switch 95 is turned on to output an operation signal to the alarm device 10.

[0013]

As described above, the present invention is configured as described above. Therefore, even if a water flow is generated in the pipe and the water flows from the inlet to the outlet of the joint body, the flowing water detector detects the flowing water. The sprinkler head connected to the branch path side operates, and the water detector operates only when water flows from the inflow port or the outlet port to the branch path section. It is possible to select and detect only flowing water by the operation of (1). Further, the blade plate is attached to the rotating shaft so as to be deflected so that a portion near the inflow port from the pipe is longer than a portion near the outflow port to the pipe.
For this reason, it is advantageous to suppress the rotation operation with respect to the pressure fluctuation due to the flowing water in the normal piping other than the operation of the sprinkler head. Further, since the flowing water detector is provided with the torque spring, it is possible to prevent rotation of the blade due to a change in water pressure caused by ordinary flowing water other than the sprinkler head in the pipe.

[0014]

[0015]

[0016]

[Brief description of the drawings]

FIG. 1 is a system diagram of a sprinkler fire extinguishing system of the present invention.

FIG. 2 is a drawing in which a flowing water detector is incorporated into a short pipe (pipe joint), (A) is a longitudinal sectional view, (B) is a BB sectional view of (A), and (C) is a partially cutaway side view. It is.

FIG. 3 is a drawing in which a running water detector is incorporated in a joint, and FIG.
Is a longitudinal sectional view, and (B) is a BB sectional view of (A).

[Explanation of symbols]

1 water main, 2 water pipe, 3 way valve, 4 water meter, 5 faucet, 6 water discharge valve, 7 joint, 8
Closed sprinkler head, 9 Running water detector, 10
Alarm device, 11 emergency bell, 70 Joint with running water detection function, 71 Joint main body, 72 Branch road section, 73 inflow port, 74 outflow port, 91 main body, 92 rotary shaft, 93 blade, 94 magnet, 95 proximity switch, 96 Torque spring, 97 O-ring, 98 stopper, L1-L4 signal line,

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Minami Aoki 4-73 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd. (72) Inventor Kiyotaka Fujii 4-73 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd. (72) Inventor Toshio Kan 4-7-3 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd. (72) Inventor Mitsuru Yagi 4-73 Kudanminami, Chiyoda-ku, Tokyo Nomi Examiner in Disaster Prevention Co., Ltd. Shoji Appearance (56) References JP-A-50-49892 (JP, A) JP-A-58-27014 (JP, A) JP-A-62-167593 (JP, A) JP JP-A-64-87896 (JP, A) JP-A-63-118618 (JP, A) JP-A-3-41974 (JP, A) Fully open 58-136161 (JP, U) Really open , U) Actually Opened Showa 55-142169 (JP, U) Actually 54-16299 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A62C 35/00-37/50 F16L 41/02 G01P 13/00 G01F 1/28

Claims (2)

(57) [Claims] 1. A T having an inlet, an outlet, and a branch path.
A joint body having a U-shape or Y-shape, a closed fire extinguishing sprinkler head connected to a branch path of the joint body, and a water pipe connected to the inflow port and the outflow port. In a sprinkler fire extinguishing system in which water flows from the inflow port to the outflow port when the provided faucet or the like is opened, the running water detecting the running water due to the operation of the closed-type fire extinguishing sprinkler head in the branch path portion of the joint body. A detector is provided, the running water detector has a rotating shaft provided through the side wall and the branch path of the joint body, and a blade plate provided in the branch path and attached to the rotating shaft. The blade is attached to the rotating shaft so that a portion of the water pipe closer to the inlet is longer than a portion of the water pipe closer to the outlet, and the blade is attached to the rotating shaft. Closed A sprinkler fire extinguishing system characterized in that the sprinkler fire extinguisher is rotated only by the action of flowing water due to the operation of a mold fire extinguishing sprinkler head. 2. The sprinkler fire extinguishing system according to claim 1, wherein the running water detector includes a torque spring for preventing rotation of the blade due to a change in water pressure caused by opening of the faucet or the like.