JP2020130750A - Sprinkler head - Google Patents

Abstract

To provide a sprinkler head having a deflector in which a pillar and a hook are positioned on a substantially circular circumference, the sprinkler head can achieve a uniform sprinkling by increasing a sprinkling amount toward a back side of the pillar.SOLUTION: A sprinkler head 1 according to the present invention includes: a deflector 19 in which a plurality of hooks 37 stands on a circumferential edge at a predefined interval therebetween: and a pillar 15 which suspends the deflector 19. The plurality of hooks 37 and the pillar 15 are positioned on a substantially circular circumference, and longitudinal side parts on the pillar 15-side of the hooks on both sides of the pillar 15 among the plurality of hooks 37 are inclined side parts 37s which are inclined in a direction away from the pillar 15 toward an upper end.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sprinkler head for fire extinguishing.

The sprinkler head is connected to a fire extinguishing equipment pipe filled with water, and when a fire breaks out, the head body with a nozzle inside is automatically activated by detecting the heat of the fire and discharging water from the nozzle. It is sprayed to extinguish the fire.

An example of such a sprinkler head is disclosed in Patent Document 1, for example. The deflector of the sprinkler head disclosed in Patent Document 1 has a disk shape, and a plurality of claws are formed on the outer edge of the deflector by bending toward the nozzle side. Further, a plurality of arms connecting the deflector and the stopper are also bent from the outer edge portion of the deflector toward the nozzle side in the same manner as the claw, and are formed on substantially the same circumference as the claw.

In the sprinkler head as described above, the fire extinguishing water discharged from the outlet collides with the deflector and splashes around, and the water flow colliding with the claw formed on the outer edge of the deflector faces upward. The fire extinguishing water that is sprinkled far away and flows out from the gap between the claws covers the nearby sprinkling.

However, the deflector is provided with a plurality of arms for suspending it, and unlike the claws, the arms are continuously formed upward from the deflector, so that the fire is extinguished at the place where the arm is provided. There is a problem that water collides with the arm and the amount of water sprinkled in the back side direction of the arm (outward direction of the arm) is reduced, so that uniform water sprinkling cannot be performed.

Regarding such a problem, in Patent Document 2, "in a sprinkler head provided with a deflector in which a plurality of claws are erected at intervals on a peripheral edge portion and a strut for supporting the deflector, a claw facing the strut is provided. The height of the claws on both sides of the claw is made higher than the height of the other claws (see claim 1 of Patent Document 2), and the claws on both sides have a substantially triangular shape on the claw side facing the strut. (See claim 6 of Patent Document 2) ”is disclosed.

The support column in Patent Document 2 is not formed by bending and molding a single metal plate as in Patent Document 1, but is a fitting hole in which a cylindrical rod separate from the disk-shaped deflector is provided in the deflector. It was erected in. Therefore, the struts are arranged radially inside the claws provided on the deflector, and the claws are provided on the same circumference as the other claws at the positions facing the strut on the outer peripheral edge of the deflector as described above. There is. Then, the heights of the claws on both sides of the claws provided at positions facing the columns are made higher than those of the other claws, and the claws are made triangular.
By adopting such a configuration, it is possible to increase the amount of water sprinkled on the back side of the column and realize uniform water sprinkling.

The reason why the amount of water sprinkled on the back side of the column increases by adopting the above structure is explained in Patent Document 2 as follows together with the behavior of the fire extinguishing water discharged from the water outlet.
The fire extinguishing water discharged from the discharge port travels toward the outer peripheral portion on the deflector, and the water flow that collides with the support is divided into two and travels toward the claws. This water stream hits the high triangular upright claws on both sides of the shallow claw facing the strut and faces the shallow claw side. At this time, since the tall triangular upright nail has a large area, it can receive more water flow than other nails. Therefore, increase the water flow toward the shallow nail side to increase the water flow toward the shallow nail side, that is, the back side of the shallow nail, that is, the support. The amount of water sprinkled on the back side can be increased.
Further, since the triangular upright claw 32 is notched and the upper end is inclined in a triangular shape toward the shallow claw 31 side, the water flow w3 easily flows toward the shallow claw 31 side.

Japanese Unexamined Patent Publication No. 2014-136000 Japanese Unexamined Patent Publication No. 2007-267791

The technique disclosed in Patent Document 2 is a so-called separate strut type in which the strut and the deflector are separately configured, and the strut is erected radially inside the position where the claw is provided in the deflector. On the premise of this, the amount of water sprinkled on the back side of the columns is increased by providing shallow claws.
However, what the present invention is intended for is a so-called strut, as disclosed in Patent Document 1, in which a strut and a claw are integrally formed and the strut is arranged on substantially the same circumference as another claw. If it is an integrated type and the columns are on approximately the same circumference, the shallow claws that exist to obtain the flight distance cannot be provided on the back of the columns, so the flow of water that collides with the deflector will flow. different.
Therefore, the mechanism disclosed in Patent Document 2 cannot be applied to a deflector with an integrated support.

The present invention has been made to solve such a problem, and in a sprinkler head having a deflector in which a support column is arranged on substantially the same circumference as a claw, the amount of water sprinkled on the back side of the support column is increased to uniformly sprinkle water. The purpose is to provide a sprinkler head that can realize the above.

(1) The sprinkler head according to the present invention is provided with a deflector in which a plurality of claws are erected at predetermined intervals on the peripheral edge of the circle, and a support column for suspending the deflector.
The plurality of claws and the strut are arranged on substantially the same circumference, and the vertical side portions of the claws on both sides of the plurality of claws that sandwich the strut on the strut side are inclined in a direction in which the upper end side is separated from the strut. It is characterized by having an inclined side portion.

(2) Further, the sprinkler head is provided with a deflector in which a plurality of claws are erected on the peripheral edge of the circle at predetermined intervals, and a support column for suspending the deflector.
Of the plurality of claws, the claws on both sides of the support column
The direction of the claw is set so that the angle between the normal line connecting the center of the deflector and the center of the claw in the circumferential direction and the straight line along the inner surface of the claw that sandwiches the support column exceeds 90 °. It is characterized by what has been done.

(3) Further, in the above (2), the vertical side portion of the claws on both sides of the strut on the strut side is an inclined side portion whose upper end side is inclined in a direction away from the strut. To do.

(4) Further, in the above (1) or (3), the vertical side portion of the claws on both sides of the support column opposite to the inclined side portion is smaller than the inclination angle of the inclined side portion. It is characterized in that it is tilted toward the support column at an tilt angle.

(5) Further, in any of the above (1) to (4), the position of the outer surface of the support column in the radial direction is radially inside the outer surface of the claws on both sides of the support column. It is characterized in that it is arranged radially outside the position of the inner surface of the nail.

In the present invention, a plurality of claws and struts are arranged on substantially the same circumference, and the upper end side of the vertical side portions of the struts on both sides of the plurality of claws sandwiching the struts is separated from the struts. Since the fire extinguishing water that spills out to the support column side has an upward velocity component, and the water is sprinkled from the gap formed by the support column and the claws on both sides, water can be sprinkled far away. This makes it possible to sprinkle water on the back surface side of the column, and uniform water sprinkling can be realized.

It is a perspective view of the deflector of the sprinkler head which concerns on this embodiment. It is a side view of the deflector shown in FIG. It is a top view of the deflector shown in FIG. It is sectional drawing of the sprinkler head in which the deflector shown in FIG. 1 is installed. It is a perspective view of the deflector which concerns on other embodiment. It is a side view of the deflector shown in FIG. It is a top view of the deflector shown in FIG.

[Embodiment 1]
As shown in FIG. 4, the sprinkler head 1 according to the present embodiment is provided with a water discharge port 5 in the center of the head main body 3, and a cylindrical frame 9 is screwed to the flange portion 7 thereof. The cylindrical frame 9 has a heat-sensitive decomposition unit 13 that presses the valve body 11 against the water discharge port 5 to seal the pressurized fire extinguishing water, and a support column 15, which is connected to the stopper ring 17 via the support column 15. The deflector 19 is provided.

The heat-sensitive decomposition unit 13 includes a set pin 21, a disc spring 23, a slider 25, a ball 27, a balancer 29, a plunger 31, a heat insulating material 33, a heat-sensitive cover 35, and a solder 36.
Hereinafter, the deflector 19, which is a feature of the present invention, will be described in detail with reference to FIGS. 1 to 3. In addition, in FIG. 4, the support column 15 which is shown to be bent is shown in a straight line in FIGS. 1 to 3 for simplification.

Similar to Patent Document 1, the deflector 19 is integrally formed by bending a metal plate, and as shown in FIGS. 1 to 3, the deflector 19 has a circular shape in which the valve body 11 is arranged in the center of the disk shape. It has an opening, and a plurality of claws 37 and columns 15 are arranged on substantially the same circumference on the outer peripheral edge.
The upper end side of the vertical side portion of the claws on both sides of the plurality of claws 37 that sandwich the support column 15 on the support column 15 side is an inclined side portion 37s that is inclined in a direction away from the support column 15. The tilt angle is θ1 as shown in FIG. 1 (a).
Further, as shown in FIG. 1A, the side portions of both sides of the claws other than the claws that sandwich the support column 15 are substantially vertical. However, the side portions on both sides of the claw other than the claw that sandwiches the support column 15 are not limited vertically, and may have various shapes. For example, the vertical side on the opposite side of the claw (one-sided inclined claw 37a) sandwiching the support column 15 may be provided with an inclination such as θ2 (see FIG. 1 (b)).
Hereinafter, when referring to the entire plurality of claws, it is referred to as a claw 37, and when referring to the claws on both sides sandwiching the support column 15, it is referred to as a one-sided inclined claw 37a, and the other claws whose sides are substantially vertical are referred to. Occasionally, it will be described as an upright claw 37b on both sides.

As shown in FIG. 2, a trapezoidal gap is formed between the support column 15 and the one-sided inclined claw 37a by forming the one-sided inclined claws 37a on both sides of the support column 15.
Further, the position of the outer surface of the support column 15 in the radial direction (the position of the alternate long and short dash line in FIG. 3) is radially inside the outer surface of the one-sided inclined claw 37a, and the position of the inner surface of the one-sided inclined claw 37a. It is arranged radially outside (the position of the broken line in FIG. 3). That is, the radial position of the outer surface of the support column 15 is arranged within the thickness range of the one-sided inclined claw 37a.

The behavior of the fire extinguishing water discharged from the water discharge port 5 in the deflector 19 configured as described above will be described.
The fire extinguishing water discharged from the water discharge port 5 collides with the valve body 11 (see FIG. 4) and is dispersed, and moves on the deflector 19 toward the outer peripheral edge thereof. The dispersed fire extinguishing water collides with the one-sided inclined claw 37a and the two-sided upright claw 37b on the outer peripheral edge of the deflector 19 and diagonally upward, or outward through the gap between the two-sided upright claw 37b and the one-sided inclined claw 37a. Alternatively, the water is discharged outward from the gap between the one-sided inclined claw 37a and the support column 15 to sprinkle water.
The fire extinguishing water that collides with the upright claws 37b on both sides and the inclined claws 37a on one side and jumps out from the upper side of each claw 37 is sprinkled relatively far with an upward velocity component by changing the direction upward.

In the present embodiment, since the one-sided inclined claws 37a are used on both sides of the support column 15, the amount of water sprinkled on the back surface side of the support column 15 is increased to realize water sprinkling close to uniform water sprinkling. The reason will be explained in detail.
Since the side of the one-sided inclined claw 37a on the support column 15 side is an inclined side portion 37s that is inclined in a direction away from the support column 15, the fire extinguishing water that protrudes outward from the inclined side portion 37s is the inclined side portion 37s. It pops out in the direction orthogonal to the relative direction, that is, with a velocity component diagonally upward (see FIG. 2). Therefore, the fire extinguishing water that jumps out from the inclined side portion 37s is sprinkled to a long distance, and the amount of water sprinkled on the back surface side of the support column 15 increases.

Further, since a trapezoidal gap is formed between the support column 15 and the one-sided inclined claw 37a, the flow velocity of the fire extinguishing water sprinkled from this gap increases by passing through the gap, for example, the mouth of the hose. When the hose is pressed with a finger to flatten it vertically, the water spreads vertically and is sprinkled far in the vertical direction in the same way that it flies far.
Further, the formed gap has a shape in which the width is narrow on the root side and widens toward the upper part. Therefore, the amount of fire extinguishing water sprinkled from the root side to the vicinity of the sprinkler head decreases, the amount of fire extinguishing water sprinkled from the upper part increases, and water can be sprinkled farther.
In this way, by setting the claws on both sides of the support column 15 to the one-sided inclined claws 37a, the inclined side portion 37s imparts a velocity component diagonally upward, and a trapezoidal gap is formed to form a vertical gap. Due to the synergistic effect of increasing the flow velocity in the direction and increasing the amount of water sprinkled from the upper part of the gap, the fire extinguishing water is sprinkled far away on the back surface side of the support column 15.
As a result, uniform watering is realized.

Further, in the deflector 19 of the present embodiment, as described above, the position of the outer surface of the support column 15 in the radial direction is arranged within the thickness range of the one-sided inclined claw 37a. With this configuration, in addition to the above, the following actions and effects can be obtained.
As described above, the fire extinguishing water that collides with the inner surface of the one-sided inclined claw 37a is also guided to the support column 15, but the radial position of the outer surface of the support column 15 exceeds the range of the thickness of the one-sided inclined claw 37a. If it is on the outside, the inner surface of the support column 15 is located radially outside the inner surface of the one-sided inclined claw 37a. In this case, the fire extinguishing water that collides with the inner surface of the one-sided inclined claw 37a enters the inside of the inner surface of the support column 15, and the amount of fire extinguishing water that contributes to the increase in the amount of water sprinkled on the back surface side of the support column 15 is reduced.

For the above reasons, it seems that the radial position of the outer surface of the support column 15 is preferably arranged further inward than the radial position of the inner surface of the one-sided inclined claw 37a.
However, if the position of the outer surface of the support column 15 is arranged further inward beyond the thickness range of the one-sided inclined claw 37a, a gap is formed between the support column 15 and the one-sided inclined claw 37a even in the radial direction. The effect of the circumferential gap formed by the support column 15 and the one-sided inclined claw 37a, that is, the effect of spreading in the vertical direction and sprinkling water far away is diminished.
In addition, as the gap becomes larger, the amount of water sprinkled from the gap increases, and a large amount of water is sprinkled near the sprinkler head, but the amount of fire extinguishing water sprinkled through the upper side of the one-sided inclined claw 37a decreases. As a result, it becomes impossible to sprinkle water far away.
Therefore, it is preferable that the radial position of the outer surface of the support column 15 is within the thickness range of the one-sided inclined claw 37a, whereby the amount of water sprinkled on the back surface side of the column 15 is increased and water is sprinkled far away. Can enhance the effect of.

In the above description, the vertical side on the opposite side of the one-sided inclined claw 37a is an example in which the inclined angle is substantially vertical at 0 ° as shown in FIG. 1A. As shown in FIG. 1B, the vertical side on the opposite side of the side tilting claw 37a may be tilted toward the support column 15.
By inclining the vertical side on the opposite side, the fire extinguishing water passing through this vertical side also has an upward velocity component, and water can be sprinkled far away. By allowing the fire extinguishing water in the vicinity of the support column 15 to be sprinkled to a long distance, the amount of water sprinkled on the back surface side of the support column 15 can be increased.

In this case, if the inclination angle of the vertical side on the support column 15 side is θ1 and the inclination angle of the vertical side on the opposite side is θ2, it is preferable that θ1> θ2. Since the resistance of the inclined side portion 37s, which has a large inclination angle, is smaller for the fire extinguishing water that collides with the one-sided inclined claw 37a, by setting θ1> θ2, the fire extinguishing water that collides with the one-sided inclined claw 37a has less resistance. It is easy to be guided to the support column 15 side, so that the amount of water to the support column 15 side can be increased.

[Embodiment 2]
The deflector 39 according to the second embodiment will be described with reference to FIGS. 5 to 7. In FIGS. 5 to 7, the same parts as those in FIGS. 1 to 3 showing the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
In the deflector 39 according to the present embodiment, the claws on both sides of the support column 15 are connected to a normal line connecting the center of the deflector 39 and the center in the circumferential direction of the claw (dashed line in FIG. 7) and a straight line along the inner surface of the claw (dashed line). Of the angles formed with (broken line), the angle of sandwiching the support column 15 is set to be a direction-changing claw 37c in which the direction of the claw is set so as to exceed 90 °. As a result, the direction change claw 37c is set so as to open the support column 15 side.

Further, as in the first embodiment, the position of the outer surface of the support column 15 in the radial direction (the position of the alternate long and short dash line in FIG. 7) is radially inside the position of the outer surface of the direction change claw 37c. It is arranged radially outside the position of the inner surface of the direction change claw 37c (the position of the broken line in FIG. 7). That is, the radial position of the outer surface of the support column 15 is arranged within the thickness range of the direction change claw 37c.

In the present embodiment, the directions of the direction-changing claws 37c on both sides of the support column 15 are different from those of the first embodiment. Therefore, the radial position of the outer surface of the direction-changing claws 37c is shown in FIG. As shown in FIG. 7, the position of the arc connecting the innermost position A on the outer surface of the diversion claw 37c (the broken line connecting the points A) is set, and the radial position of the inner surface of the diversion claw 37c is as shown in FIG. The position of the arc connecting the innermost position B on the inner surface of the direction change claw 37c (the broken line connecting the points B) is used.

In the present embodiment, since the claws on both sides of the support column 15 are the direction-changing claws 37c, the amount of water sprinkled on the back surface side of the support column 15 is increased, and watering close to uniform watering is realized. The reason will be explained in detail.
Since the direction-changing claw 37c is oriented so that the support column 15 side opens, the fire extinguishing water that collides with the direction-changing claw 37c is guided toward the support column 15 side. Therefore, the amount of fire extinguishing water toward the support column 15 side is large.

Further, since a vertical gap is formed between the support column 15 and the direction change claw 37c, water is sprinkled far in the vertical direction for the same reason as described in the first embodiment.
That is, by setting the claws on both sides of the support column 15 to the direction-changing claws 37c, the amount of fire extinguishing water toward the support column 15 side increases, and the vertical gap is formed to increase the flow velocity in the vertical direction. Due to the synergistic effect of the above, the fire extinguishing water is sprinkled far away on the back surface side of the support column 15.
As a result, uniform watering is realized.

Further, as shown in FIG. 6, the direction-changing claw 37c of the present embodiment is inclined so that its upper side is inclined toward the support column 15, so that the fire extinguishing water that jumps out from the upper side of the direction-changing claw 37c is on the support column 15 side. Therefore, the amount of water sprinkled on the back surface side of the support column 15 can be increased by such an action.

Further, in the deflector 39 of the present embodiment, as described above, the radial position of the outer surface of the support column 15 is arranged within the thickness range of the direction change claw 37c. This configuration is basically the same as that of the first embodiment, and for the same reason as described in the first embodiment, the amount of water sprinkled on the back surface side of the support column 15 is increased and the effect of sprinkling water on a distant place is effective. Can be enhanced.

In addition, the vertical side of the direction change claw 37c on the support column 15 side may be inclined so as to be separated from the support column 15 like the one-sided inclined claw 37a of the first embodiment. By doing so, in addition to the effect of the present embodiment, the effect described in the first embodiment can also be achieved.
Further, the vertical side of the direction change claw 37c on the opposite side to the support column 15 may also be inclined to the support column 15 side as in the first embodiment.
Further, when both the vertical side on the support column 15 side and the vertical side on the side opposite to the support column 15 of the direction change claw 37c are inclined, the inclination angle of the vertical side on the support column 15 side is set as described in the first embodiment. It is desirable to make it larger.

In the examples described in the first and second embodiments, the radial position of the outer surface of the support column 15 is arranged within the thickness range of the one-sided inclined claw 37a or the direction-changing claw 37c. However, the present invention is not limited to this, and it is sufficient that the plurality of claws 37 and the support columns 15 are arranged on substantially the same circumference, and the diameter of the outer surface of the support columns 15 is large. It also includes those whose directional position substantially coincides with the radial position of the inner surface of the one-sided inclined claw 37a or the diversion claw 37c.

In the present specification, the vertical side portion of the claw 37 is referred to as a vertical side or an inclined side, and is also shown in the drawing as described above. This is because, when actually producing a deflector, the vertical side is not always a straight line from the root to the tip, and the corners are rounded or composed of lines including curves and inflection points. Needless to say, the present invention includes such an aspect.

1 Sprinkler head 3 Head body 5 Water outlet 7 Flange part 9 Cylindrical frame 11 Valve body 13 Heat-sensitive decomposition part 15 Strut 17 Stopper ring 19 Deflector (Embodiment 1)
21 Set pin 23 Belleville spring 25 Slider 27 Ball 29 Balancer 31 Plunger 33 Insulation material 35 Heat-sensitive cover 36 Solder 37 Claw 37a One-sided inclined claw 37b Both-sided upright claw 37s Inclined side 37c Diagonal claw 39 Deflector (Embodiment 2)

Claims (5)

A sprinkler head provided with a deflector in which a plurality of claws are erected at a predetermined interval on the peripheral edge of a circle, and a support column for suspending the deflector.
The plurality of claws and the strut are arranged on substantially the same circumference, and the vertical side portions of the claws on both sides of the plurality of claws that sandwich the strut on the strut side are inclined in a direction in which the upper end side is separated from the strut. A sprinkler head characterized by having an inclined side. A sprinkler head provided with a deflector in which a plurality of claws are erected at a predetermined interval on the peripheral edge of a circle, and a support column for suspending the deflector.
Of the plurality of claws, the claws on both sides of the support column
The direction of the claw is set so that the angle between the normal line connecting the center of the deflector and the center of the claw in the circumferential direction and the straight line along the inner surface of the claw that sandwiches the support column exceeds 90 °. A sprinkler head that is characterized by having done it. The sprinkler head according to claim 2, wherein the vertical side portion of the claws on both sides of the strut on the strut side is an inclined side portion whose upper end side is inclined in a direction away from the strut. Claim 1 or claim 1, wherein the vertical side portions of the claws on both sides of the support column, which are opposite to the inclined side portion, are inclined toward the support column side at an inclination angle smaller than the inclination angle of the inclined side portion. The sprinkler head according to 3. The support column is arranged so that the radial position of the outer surface thereof is radially inside the outer surface of the claws on both sides of the support column and radially outside the position of the inner surface of the claw. The sprinkler head according to any one of claims 1 to 4, wherein the sprinkler head is characterized.

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