JPH04219585A - Junction unit for fluid ejecting head, fluid supplying method for plural fluid ejecting heads and constructing method for fluid supplying pipeline - Google Patents

Abstract

PURPOSE:To simplify design and construction for fixing numerous fluid ejecting heads by providing a supply junction chamber housed inside a housing a taking-in port formed on a circumferential wall, and a plurality of supply ports formed on a side wall, for sending the fluid to the fluid ejecting heads. CONSTITUTION:A junction unit U for a fluid ejecting head is provided with two cylindrical portions 1a, 1b each having different diameters to constitute a housing 1, and accordingly, a supply junction chamber 2 is formed as a whole. Water supply ports 1ab... as supply ports arranged at equal intervals in the circumferential direction are formed on a circumferential wall of the cylindrical portion 1a. A downward water supply port 1bb is formed on a bottom wall 1ba in the lower cylindrical portion 1b. A water taking-in port 1bc as a taking-in port for introducing fluid from a water supply main pipe and a spare water supply port 1ba are formed on the side wall of the cylindrical portion 1b. A connecting cylindrical portion 4, which is projected outward, is disposed continuously to an opening edge of the water taking-in port 1bc on the side wall of the cylindrical portion 1b, for connecting the water supply pipe.

Description

[Detailed Description of the Invention] [Industrial Application Field] The invention is applicable to, for example, water supply piping for sprinkler heads disposed in buildings, irrigation piping for golf courses and wide-area farmland, and air lane piping for fish farms; This relates to the construction method of such fluid supply piping.

[Prior Art] Recently, in large-scale stores such as supermarkets, sprinklers have been installed in the ceilings in order to prevent or minimize damage caused by fire. As shown in Figure 7, each sprinkler head h...
(Only a part of it is labeled in Figure 7.)
are arranged so that the water sprinkling areas SE, SE of the adjacent heads h, h overlap each other so that water can be sprayed all over the floor surface of the building B. For this reason, the heads h are arranged at relatively small intervals, and the number of heads h is extremely large in a building with a large floor. When such a large number of sprinkler heads are installed, the piping for supplying water to these sprinkler heads naturally becomes complicated.

Conventionally, water supply piping for a large number of heads as described above was
For example, as shown in FIG. 7, this has been done by running a main water supply pipe 400 to an appropriate position and sequentially branching out branch pipes of required diameters from this supply relay room 400. That is, to explain the case of piping for the sprinkler head h1 in FIG. 7, first, a branch pipe 40 having a diameter necessary for supplying water from the water supply main pipe 400 to the head group H including the sprinkler head h1.
1 and 402, further branching terminal pipes that sequentially supply water from the branch pipe 401 to the other sprinkler heads h of the head group H, and finally the sprinkler head h.
A terminal pipe 410 for supplying water to the water tank 1 is branched. In this case, in order to make the ejection pressure constant in each sprinkler head, the diameter of the branch pipe 401 is made smaller each time the terminal pipe for each head is branched (in Figure 7, the numbers in parentheses are the pipe names. diameter).

[Problems to be Solved by the Invention] However, there is a problem in that extremely complicated construction is required to provide the above-mentioned piping for a large number of sprinkler heads. In other words, the ceiling where these sprinklers are installed is narrow and has poor footing, and there are also many pipes for other equipment such as electrical and air conditioning ducts, so it is necessary to install hanging anchors to support the sprinkler pipes. Dimensions for installation were complicated, and the piping work itself was extremely difficult. Additionally, as mentioned above, in order to maintain a constant fluid ejection pressure from each head, pipes of various diameters had to be used in combination, which made the design and construction more complicated. .

The invention was made in view of the above circumstances,
A first object of the present invention is to provide a relay unit for fluid emitting heads that allows easy design and construction for installing a large number of fluid emitting heads, including water supply heads such as the sprinkler heads described above.

A second object of the invention is to provide a fluid supply method for a plurality of fluid emitting heads that can facilitate design and construction by reducing the types of pipes used and simplifying the installation work. There is.

A third object of the invention is to provide a method for constructing fluid supply piping that can be easily constructed for a large number of fluid emitting heads.

[Means for Solving the Problems] In order to achieve the above-mentioned first object, a relay unit for a fluid emitting head according to the invention includes a supply relay chamber formed in a housing, and a supply pipe that is introduced into the supply relay chamber from a supply main pipe. an intake port provided on the peripheral wall of the housing for this purpose; and a plurality of supply ports provided at least at intervals on the side wall of the housing for delivering the fluid inside the supply relay chamber to the fluid emitting head; It is characterized by having the following.

A method of supplying fluid to a plurality of fluid emitting heads according to the invention that achieves the second object is to take fluid supplied from a main supply pipe into a supply relay chamber and to pass the fluid through a plurality of branch pipes branched from the supply relay chamber. It is characterized by supplying fluid to a plurality of fluid emitting heads.

Further, a method for constructing a fluid supply pipe that achieves the third object is to provide a fluid ejection head relay unit that includes a fluid intake port connected to a main supply pipe and a plurality of supply ports connected to a fluid ejection head. A branch pipe of a specified length is connected to each supply port, the fluid emitting head is connected to the branch pipe, and the fluid emitting head is arranged at a corresponding location of a predetermined number of fluid emitting head installation parts, and then the main supply pipe and the intake port are connected. , is characterized by.

Another method for constructing fluid supply piping that achieves the third objective is to provide a relay unit for a fluid ejection head that includes an intake port connected to a main supply pipe and a plurality of supply ports connected to a fluid ejection head. Connecting the fluid emitting head to each supply port via a branch pipe of a specified length, disposing the fluid emitting head at a corresponding location of a predetermined number of fluid emitting head installation parts, and then connecting the main supply pipe and the intake port. , is characterized by.

Yet another method for constructing fluid supply piping that achieves the third objective is to provide a method for constructing a fluid supply pipe that includes an intake port for connecting a main supply pipe, and a plurality of supply ports arranged at intervals on the side wall of the pipe. arranging a fluid emitting head relay unit having a flexible branch pipe connected to a supply port at corresponding locations of a predetermined number of fluid emitting head installation parts, and then connecting the supply main pipe and the intake port; It is a feature.

[Function] The fluid emitting head relay unit according to the invention can be installed at a predetermined position and connected to a plurality of supply ports via branch pipes, thereby attaching fluid emitting heads to respective predetermined positions around the fluid emitting head. can be placed.

Further, according to the fluid supply method for a plurality of fluid ejection heads according to the invention, since the fluid once introduced into the supply relay chamber is supplied to the fluid ejection heads, the branch pipe connecting the supply relay chamber and the fluid ejection heads is The number of types can be minimized.

Furthermore, according to the method for constructing fluid supply piping according to the invention,
The fluid emitting head relay unit is placed near the center of the predetermined number of fluid emitting head installation sections, and the main supply pipe is connected to the intake port of this relay unit, simplifying the piping of the main supply pipe. It becomes possible to do so. Furthermore, for the same reason, the piping process from the supply main pipe to the fluid emitting head is dramatically simplified.

In particular, the method for constructing fluid supply piping according to the invention, in which a branch pipe is connected to each supply port in advance and then a relay unit for a fluid emitting head is placed at a predetermined position, can reduce the process of connecting branch pipes on-site. It can be abolished or simplified, and at the site, only the work of attaching the fluid emitting head relay unit and each branch pipe to the ceiling is required.

In this case, if the branch pipes connected to each supply port are made into flexible branch pipes, the overall shape in the state where the branch pipes are connected can be made more compact.

[Example] The present invention will be described below based on illustrated embodiments.

As shown in FIGS. 1 and 2, the fluid emitting head relay unit U of this embodiment includes two cylindrical portions 1a and 1b having different diameters forming a housing 1 of this unit U. That is, the upper end of the cylindrical part 1b, which is arranged concentrically with the upper cylindrical part 1a and has a small diameter and has an open top, is connected to the bottom wall 1aa of the upper cylindrical part 1a, which has a large diameter and is closed at the top, so that the housing 1 is formed. The cylindrical portion 1b has a bottom wall 1ba at the lower end. The interiors of both cylindrical portions 1a and 1b communicate with each other at their connecting portions, forming a supply relay chamber 2 as a whole.

Water supply ports 1ab, which are supply ports, are formed in the peripheral wall of the cylindrical portion 1a at equal intervals in the circumferential direction. Also,
Continuing from the opening edge of each of these water supply ports 1ab, there are provided eight supply cylindrical portions 3 that protrude outward for connecting branch pipes 201 (see FIG. 1). These supply cylindrical portions 3 are formed to have a predetermined diameter so that the pressure of the fluid ejected from a sprinkler head h described later becomes a predetermined pressure. A branch pipe 201 is provided on the outer periphery of the tip of the supply cylindrical portion 3.
A male thread 3a is screwed to engage with a female thread formed on the inner periphery of the end portion.

On the other hand, the lower cylindrical portion 1b is provided with a downward water supply port 1bb on its bottom wall 1ba. A sprinkler head h is connected to this water supply port 1bb via a downward straight pipe.

The side wall of the cylindrical portion 1b has a water intake port 1bc for introducing fluid from the main water supply pipe and a backup water supply port 1bd.
is formed. A communicating cylindrical portion 4 that protrudes outward is provided on the side wall of the cylindrical portion 1b, continuing from the opening edge of the water intake port 1bc.

The connecting cylindrical portion 4 is used for connection to a water supply main pipe, and has an annular groove 4a formed on its outer circumferential surface near its end. Further, a pre-supply cylindrical portion 5 is provided that continues from the opening edge of the water supply port 1bd and protrudes laterally. This pre-supply cylindrical portion 5 is normally covered with a stopper 5a.

A mounting member 6 is provided at the upper end of the upper cylindrical portion 1a for suspending the fluid emitting head relay unit U from a ceiling or the like.

Next, an example of a construction method for installing a sprinkler head using the fluid emitting head relay unit U as described above will be described. The sprinkler head h shall be arranged in the same manner as in FIG.

In order to install the sprinkler head h in this way, first, as shown in FIG. hang it up. The fluid emitting head relay unit U of the embodiment shown in FIG. 1 and FIG. As is clear, the downward water supply port 1bb of the fluid emitting head unit U is installed so as to be located at the middle sprinkler head h among the nine sprinkler heads h....

Next, the branch pipes 201, such as straight pipes, interposed between the supply cylinder part 3 of the fluid emitting head relay unit U and the sprinkler head are connected. At this time, branch pipe 201
... supplies the female thread formed on the inner periphery of each end of the cylindrical portion 3...
By screwing it into the male screw 3a of , it can be connected to the fluid emitting head relay unit U with a very simple operation, and does not require any work by a skilled person. Further, as long as the branch pipes 201 are used to supply water to sprinkler heads of the same standard, those with the same diameter may be used, and the types of pipes that can be used are extremely limited. Therefore, in this respect as well, the complexity of the work is extremely low. Incidentally, a sprinkler head may be directly attached to the supply cylindrical portion 3 if necessary.

After each branch pipe 201 is attached as described above, a predetermined sprinkler head h is attached to each tip thereof.

By suspending a plurality of fluid emitting head relay units U from the ceiling using the above procedure and attaching branch pipes 201 of specified length to each, sprinkler heads h can be installed in exactly the same arrangement as shown in Fig. 7. can be installed.

In addition, when installing the sprinkler head h... in the above condition, the relay unit U for the fluid emitting head must be installed.
On the other hand, a straight pipe of a specified length and a sprinkler head h... are assembled on the supply cylindrical part 3 on the floor, and then,
The fluid emitting head relay unit U may be suspended at a predetermined position on the ceiling in the same manner as described above.

On the other hand, as shown in FIGS. 1 and 2, the connecting cylindrical portion 4 of the fluid emitting head relay unit U suspended from the ceiling.
is connected to a pipe end 101 provided on a main water supply pipe (not shown). In this embodiment, an annular groove 102 similar to the annular groove 4a of the communicating cylindrical part 4 is formed near the end of the pipe end 101 on the water main side, and the following operations using these annular grooves 4a and 102 are performed. The cylindrical part 4 and the pipe end 10 are connected by a grooved joint such as
I am trying to make 1 connection. That is, the connecting cylindrical part 4 and the tube end 101 are abutted against each other concentrically with a fixed interval apart, and an annular packing 103 is disposed in close contact with the outer circumferential surfaces of both ends. Coupling 10, each of which has a semicircular arc shape
4, 105, these couplings 104, 105
Circumferential annular convex portions 104a, 104a (coupling 10
5 side annular convex portions are not shown) are fitted into the annular grooves 4a and 102, respectively, and flange portions 104b and 105 are integrally formed at both ends in the circumferential direction of the couplings 104 and 105.
By tightening b with bolts 106 and nuts 107, the connecting cylindrical portion 4 and the tube end 101 are connected. In this way, the connecting cylindrical portion 4 and the tube end 101
By connecting the water supply main pipe and the fluid emitting head relay unit, there is no need to perform complicated and skilled work such as welding, which simplifies the work. .

As is clear from the above explanation, if the water supply piping, that is, the fluid supply piping, to the sprinkler head is constructed using the above method, the number of types of pipes can be reduced and the work process itself can be simplified, so that many sprinkler Fluid supply piping to the head can be done extremely easily. Moreover, since the water supply main pipe only has to branch at the pipe end 101 for each fluid emitting head relay unit, its arrangement can be simplified and patterned easily. Therefore, the design and construction can be easily and systematized.

Note that the construction method of the fluid supply piping using the fluid emitting head relay unit shown in FIGS. 1 and 2 may be as follows.

That is, in the other construction method shown here, as shown in FIG. 4, the flexible branch pipes 201a are connected in advance to the supply cylindrical part 3 of the fluid emitting head relay unit U, and these flexible branch pipes are A straight pipe 201b is connected to 201a. In this case, a sprinkler head h may be attached in advance to the tip of the straight pipe 201b. Incidentally, a sprinkler head h is attached in advance to the downward water supply port 1bb. In this way, by using the flexible branch pipe 201a, it is possible to produce a fluid emitting head unit in a factory in which the branch pipe and, if possible, a sprinkler head are also connected to the fluid emitting head relay unit U. As shown in FIG. 4, such a fluid emitting head unit can be compactly packed and transported by bending the flexible branch pipes 201a.

In the construction method of this embodiment, the fluid emitting head relay unit U is suspended at a predetermined position on the ceiling with the flexible branch pipe 201a etc. attached, as in the previous embodiment.

Next, a scaffold is erected to extend the flexible branch pipe 201a, and the flexible branch pipe 201a and the straight pipe 2
Fix 01b to the ceiling using a mounting bracket or the like.

Thereafter, the procedure is the same as in the previous example. That is, if the sprinkler head is not yet attached, it is attached to the tip of the straight pipe 201b, and the pipe end 101 of the water supply main pipe is connected to the communicating cylindrical portion 4.

As is clear from the above explanation, compared to the construction method of the previously described embodiment, the fluid supply piping construction method according to this embodiment eliminates the need for the connection work of the branch pipes 201a and 201b, and the on-site work. is more simplified.

In the sprinkler system constructed by any of the water supply pipe construction methods described above, when fire extinguishing water is supplied to the water supply main, a saddle 101 is installed in the supply relay chamber 2 of each fluid emitting head relay unit. , 4, fire extinguishing water is introduced. And this supply relay room 2
, each water supply port 1bd formed on the peripheral wall of the housing 1
Fire extinguishing water at a predetermined pressure is supplied to the sprinkler head h, which is a fluid emitting head, through the supply cylindrical portion 3 and the branch pipe 201 (or the flexible branch pipe 201a and the straight pipe 201b). Further, fire extinguishing water at a predetermined pressure is also supplied to the sprinkler head h connected to the downward water supply port 1bb.

By supplying fire extinguishing water to the sprinkler heads h in this way, it is possible to directly supply water from the supply relay room 2 to each sprinkler head h without passing through water supply to other sprinkler heads. The number of branch pipes used can be minimized, which greatly simplifies the design and construction of sprinkler systems.

In the fluid emitting head relay unit shown in FIG. 1 and FIG.
By forming each water supply port 1bd into a branch pipe 201
Alternatively, as shown in FIG. 5, for example, an annular groove 3b is provided at the tip of the supply cylindrical portion 3 in place of the male thread 3a, and the supply cylindrical portion 3 and the branch pipe are connected to each other. The cylindrical portion 4 and the pipe end 101 of the water supply main pipe may be connected by a grooved joint similar to that of the pipe end 101 of the water supply main pipe.

Further, as shown in FIG. 6, a female thread 3c is formed on the inner circumference of the supply cylindrical part 3, and a male thread formed at one end of the branch pipe is screwed into this female thread 3c, thereby connecting the supply cylindrical part 3 and the branch pipe. You may do so. In short, the design of the connection means between the fluid emitting head relay unit and each branch pipe can be changed as necessary.

Furthermore, although the embodiments have been described with respect to fluid supply piping for sprinkler heads, the present invention can also be applied to fluid supply piping for fluid emitting heads other than sprinkler heads.

Furthermore, all of the construction methods for the fluid supply piping in the above embodiments are such that the fluid supply piping is constructed using a relay unit for a fluid emitting head that is suspended from the ceiling as shown in FIGS. 1 and 2. However, in the construction method according to the invention, the fluid emitting head relay unit may be placed at a predetermined position by placing it on the floor or the like.

Furthermore, the fluid to be supplied does not necessarily have to be just water, but may include other liquids such as fire extinguishing fluid, and even gases such as air.

[Effects of the Invention] According to claim 1, by installing this fluid emitting head relay unit, the fluid emitting head can be directly or indirectly connected to each water supply port, so that it is possible to connect the fluid emitting head directly or indirectly to each water supply port. The piping becomes extremely simple compared to the case where various piping routes are formed for each fluid emitting head, and it is possible to easily construct fluid supply piping such as a sprinkler device.

According to the second aspect, the types of branch pipes that connect the supply relay chamber and the fluid emitting head can be minimized, so that the complexity of the work is dramatically improved.

According to claim 3, since the piping of the water supply main pipe can be simplified and the piping process from the water supply main pipe to the fluid emitting head is simplified, the fluid supply piping can be completed in a short time without requiring a skilled person. construction work will be possible.

According to claim 4, the process of connecting the branch pipes is eliminated or simplified, so that the piping process from the water supply main pipe to the fluid emitting head can be further simplified. play.

According to claim 5, the fluid emitting head relay unit to which the branch pipe is connected in advance can be made compact;
Therefore, the cost required for transportation etc. is reduced.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the relay unit for the fluid emitting head, Figure 2 is a bottom view, Figure 3 is a schematic plan view showing the connection state of the branch pipe, and Figure 4 is a flexible pipe used as the branch pipe. FIG. 5 is a side view of the main part showing a modified example of the supply cylindrical part continuous to the water supply port, FIG. 6 is a cross-sectional view of the main part showing another modified example, and FIG. 7 is a side view explaining the case. FIG. 2 is a schematic diagram showing an example of a conventional fluid supply piping. U...Relay unit for fluid emission head 1...Housing 1bc...Water intake 1bd...Water supply port 2...Relay unit for fluid emission head 201...Branch pipe 201a...Flexible branch pipe 201b...Straight pipe (branch pipe) h...Sprinkler head (fluid Radiation head) Patent applicant: Goto Setsei Kogyo Co., Ltd. Takenaka Corporation Co., Ltd. Japan Steel Pipe Fittings Co., Ltd. Agent: Patent attorney Koichi Suzue

Claims (5)

[Claims] Claim 1: A supply relay chamber formed within a housing;
an inlet provided in the peripheral wall of the housing for taking in the fluid from the supply main into the supply relay chamber; and an intake port provided for delivering the fluid inside the supply relay chamber to the fluid emitting head;
A relay unit for a fluid emitting head, comprising at least a plurality of supply ports arranged at intervals on a side wall of a housing. [Claim 2] The fluid supplied from the supply main pipe is introduced into a supply relay chamber, and the fluid is supplied to a plurality of fluid emitting heads through a plurality of branch pipes branched from the supply relay chamber. A method of supplying fluid to multiple fluid emitting heads. 3. A fluid emitting head relay unit comprising a fluid intake port connected to a supply main pipe and a plurality of supply ports connected to the fluid emitting head is arranged at corresponding locations of a predetermined number of fluid emitting head installation sections. 1. A method for constructing fluid supply piping, the method comprising the steps of: connecting a main supply pipe to the intake port, and connecting the fluid emitting head to each supply port via a branch pipe of a specified length. 4. A fluid emitting head relay unit comprising an intake port connected to a main supply pipe and a plurality of supply ports connected to the fluid ejection head, wherein the fluid is supplied to each supply port through a branch pipe of a specified length. A method for constructing fluid supply piping, comprising: connecting a radiation head, arranging it at a corresponding location of a predetermined number of fluid radiation head installation parts, and then connecting a supply main pipe to the intake port. 5. A fluid emitting head comprising an intake port for connecting a supply main pipe, a plurality of supply ports arranged at intervals on a side wall of the fluid ejection head, and flexible branch pipes connected to these supply ports. A method for constructing fluid supply piping, comprising: arranging relay units for use at corresponding locations of a predetermined number of fluid emitting head installation sections, and then connecting the supply main pipe and the intake port.