TW202009028A - Fire extinguishing head - Google Patents

Abstract

An object of the invention is to ensure uniformity in the volume of sprayed water in a fire extinguishing head, while also suppressing any effects on spraying performance and the like caused by contact with the hands and clothing of workers. The fire extinguishing head comprises: a main body having a spray nozzle that sprays a fire extinguishing liquid, a valve that closes off the spray nozzle, a heat-sensitive body that closely adheres the valve to the spray nozzle and releases that state of adherence between the valve and the spray nozzle upon detecting a predetermined amount of heat, a deflector that is struck by the fire extinguishing liquid sprayed from the spray nozzle, a frame that connects the main body and the deflector, and a projecting section that is disposed between the frame and the deflector, and suppresses the spraying distance of the fire extinguishing liquid.

Description

Fire extinguisher

The invention relates to a fire extinguishing nozzle spraying fire extinguishing liquid.

A sprinkler head is known, which includes a sprinkler body provided with a water outlet, a valve body plugging the water outlet, a deflection body facing the water outlet, a frame connecting the deflection body and the sprinkler body, and a valve body for pushing the valve body Thermal components. When the sprinkler head is out of water, the fire extinguishing water will hit the frame, and the amount of spray reaching the back side of the frame will be reduced compared to other parts.

In response to this problem, for example, Patent Document 1 discloses that, on the opposite side of the heat-sensitive member of the frame, a spray reflecting plate facing the deflecting body and extending in the radial direction is provided in order to change the advancing direction of the fire extinguishing water scattered along the back of the frame. [Conventional technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 3928107

[Problems to be solved by invention]

In the sprinkler head of Patent Document 1, there is a possibility that the operator's hands and clothes (for example, sleeves) touch the spray reflector. As a result, the spray reflector is deformed or moved from the original installation position, and the expected spray performance may not be achieved. Furthermore, there is a possibility that the operator's hands and clothes may be damaged due to contact with the spray reflector. As mentioned above, there is still a problem to be solved in the method of uniformizing the spray amount as in Patent Document 1.

In view of this, the object of the present invention is to ensure that the spraying amount of the fire extinguishing nozzle is uniform, and at the same time to suppress the influence on the spraying performance due to the contact between the operator's hands and clothes. [Technical means to solve problems]

In order to solve the above-mentioned problems, the present invention provides a fire extinguishing sprinkler head, which includes: a main body having an injection port for extinguishing a fire extinguishing liquid; a valve to close the injection port; a thermal body to make the valve close to the injection port, and once a predetermined The heat of the valve releases the close contact between the valve and the injection port; the deflector body withstands the impact of the fire extinguishing fluid sprayed from the injection port; the frame, connecting the main body and the deflector body; and the protrusion, which is arranged on the frame and Between the deflectors, the flying distance of the extinguishing fluid is suppressed.

In the fire extinguishing nozzle of the present invention having the above configuration, it is preferable that the frame includes a pair of arms, the pair of arms extends across the injection port, and is connected to each other at the front end; the protrusion includes A standing plate portion of a pair of plates, the pair of plates is located between the deflection body and each of the pair of arm portions.

In the fire extinguishing nozzle of the present invention configured as described above, it is preferable that the width of the pair of plates is 0.5 times or more and 3.5 times or less the width of the corresponding arm portion.

The fire extinguishing nozzle of the present invention having the above-mentioned structure preferably further includes: a protruding claw portion extending from the outer edge of the deflection body toward the injection port side; the protruding claw portion including the first claw piece, A first interval is arranged along the outer edge of the deflection body; and a second claw piece is arranged at a second interval greater than the first interval along the outer edge of the deflection body. [Effect of invention]

According to the present invention, it is possible to ensure that the spray amount of the fire extinguishing nozzle is uniform, and at the same time to suppress the influence on the spray performance due to the contact between the operator's hands and clothes.

Hereinafter, the fire extinguishing nozzle of the representative embodiment of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited by these drawings. In addition, since the drawings are used to conceptually explain the present invention, for ease of understanding, the size, ratio, or number may be exaggerated or simplified as necessary.

For ease of explanation, the coordinate axes on the drawings are defined as follows. That is, the positive direction of the Z axis is taken as the vertical upward direction, and the X axis direction is orthogonal to the Z axis and the direction in which the arm portions 51 and 52 are arranged. Let the Y-axis direction be the direction orthogonal to the X-axis and Z-axis. Therefore, in the following description, "up" refers to the positive direction of the Z axis, and "down" refers to the negative direction of the Z axis.

In general, the fire extinguishing head is used in a state of being connected to a piping for supplying fire extinguishing liquid. Here, as an example of a fire extinguishing sprinkler, a description will be given of a sprinkler of the following type: a closed sprinkler that is always filled with fire extinguishing liquid in the piping, and the spout of the fire extinguishing liquid is an upward type that faces vertically upward. Therefore, the ground on which the fire extinguishing fluid is to be sprayed is on the lower side (the negative side of the Z axis) than the fire extinguishing nozzle. However, the present invention is applicable to all fire extinguishing sprinklers, including open sprinklers and pendant sprinklers.

Although in this embodiment, a fire extinguishing liquid with a flow rate of less than 80 L/min (a small amount of water) is assumed, the present invention can also correspond to a fire extinguishing liquid with a flow rate of 80 L/min or more. In addition, the fire extinguishing liquid used in the present embodiment is assumed to be water, but it may also be a foam aqueous solution containing a foam fire extinguishing agent in a predetermined ratio.

＜Composition of fire extinguishing nozzles＞ The configuration of the fire extinguishing nozzle 1 of this embodiment will be described. As shown in FIG. 3, the fire extinguishing head 1 includes a main body 10, a valve 20, a heat-sensitive body 30, a deflecting body 40, a frame 50, and a stand 60 as an embodiment of a protrusion. Hereinafter, these constituent elements will be described in order.

The main body 10 is a cylindrical member connected to a pipe for supplying fire extinguishing liquid (not shown), and ejects the fire extinguishing liquid supplied from the pipe. The main body 10 is, for example, as shown in FIGS. 5 and 6, and includes an inflow port 11, an injection port 12, a flow path 13, and a screw part 14.

The inflow port 11 is an opening into which the extinguishing fluid from the piping flows in; the injection port 12 is an opening through which the extinguishing fluid is jetted toward the deflector 40. Then, between the inflow port 11 and the injection port 12, a flow path 13 is formed. Furthermore, a screw portion 14 is formed on the outer peripheral surface of the main body 10 for attachment to piping.

The valve 20 is a member that closes the injection port 12. The valve 20 is cylindrical, and as shown in FIG. 3, has a bottom 21 at one end and a flange 22 at the other end. Therefore, in a state where the bottom portion 21 is inserted into the main body 10, the valve 20 will contact the injection port 12 at the flange portion 22 and block the injection port 12.

The heat-sensitive body 30 pushes the valve 20 so that the valve 20 is close to the injection port 12, and once the predetermined heat is detected, the pressing of the injection port 12 is released, so that the extinguishing fluid can be injected from the injection port 12. In this embodiment, the heat-sensitive body 30 is assumed to be a glass bulb, but the present invention is not limited to this. The thermal body 30 is connected to the valve 20 at one end, and is supported by a screw tube 55 at the other end.

The deflecting body 40 is a plate-shaped member that receives the impact of the fire extinguishing fluid sprayed from the main body 10. The deflecting body 40 is arranged to be almost orthogonal to the jetting direction (Z axis direction) of the fire extinguishing fluid. The fire extinguishing fluid is dispersed by colliding with the deflector 40, and a predetermined spray distribution can be obtained. In the present embodiment, it is assumed that the deflection body 40 is disc-shaped, but other shapes such as a rectangle may be used.

Specifically, as shown in FIG. 1, the deflector 40 includes a first raised portion 42, a second raised portion 44, and a claw portion 45. The first raised portion 42, the second raised portion 44, and the claw portion 45 are preferably a single member and integrally formed.

As shown in FIG. 5, the first raised portion 42 is a platform-shaped portion formed by raising the central portion of the deflector 40 toward the injection port 12 side. The first raised portion 42 makes it possible to maintain a good balance between the amount of spray toward the vicinity of the fire extinguishing head 1 (directly below) and the amount of spray toward the far side. That is, the fire fighting fluid can be scattered on the ground portion where the fire fighting fluid is scattered, so that all the areas immediately below and outside the fire fighting nozzle 1 are covered with fire fighting fluid.

The first raised portion 42 guides the extinguishing fluid collided in the direction (radial direction) toward the outer edge of the deflector 40. For this reason, the first raised portion 42 has a flat surface toward the injection port 12 side.

The second raised portion 44 is provided between the first raised portion 42 and the claw portion 45; by rising toward the injection port 12 side, the extinguishing fluid collided is guided downward. In this embodiment, as shown in FIG. 4, the second raised portion 44 is arranged so as to surround the first raised portion 42. With this configuration, a sufficient amount of water can be ensured below the fire extinguishing head 1.

The degree of bulging of the second bulging portion 44 is smaller than the degree of bulging of the first bulging portion 42 as shown in FIG. 3, for example. In other words, the first raised portion 42 is closer to the main body 10 than the second raised portion 44. This makes it possible to further balance the amount of spray toward the vicinity of the fire extinguishing nozzle 1 (directly below) and the amount of spray toward the far side.

Next, the protruding claw portion 45 is provided to guide the extinguishing liquid from the collision more surely downward, and includes a plurality of small pieces. As shown in FIG. 1, the claw portion 45 extends from the outer edge of the deflector 40 toward the injection port 12 side, and is arranged along the outer periphery of the deflector 40.

In the claw portion 45, the interval between the adjacent small pieces may be fixed at the entire periphery of the deflection body 40 at a fixed interval, or may be different according to the position. If the small pieces are arranged at different intervals according to the position, the flying distance of the extinguishing fluid will become longer or shorter according to the spraying direction. Thereby, the spraying performance according to the installation position of the fire extinguishing head 1 can be exerted.

In this embodiment, as shown in FIG. 4, as seen from the center of the deflection body 40, it is a small piece located in a direction (Y-axis direction) orthogonal to the arrangement direction (X-axis direction) of the arm portions 51 and 52, It is arranged at interval D1; the remaining small pieces are arranged at interval D2 which is greater than interval D1. The small film group arranged at a narrow interval D1 will have a larger amount of fire extinguishing fluid collide than the small film group arranged at a wider interval D2. Therefore, when viewed from the center of the deflector 40, the direction of the small piece group corresponding to the interval D1 (in this case, the Y-axis direction) is shorter than the other directions, and the flying distance of the extinguishing fluid becomes shorter. In addition, the position of the small film group with a narrow interval can be set as appropriate in accordance with the spray performance required for the fire extinguishing nozzle 1.

The small pieces constituting the protruding claw portion 45 need only be directed toward the ejection port 12 side (downward), and it is not necessary that all the small pieces are directed vertically downward. By making the direction of the small pieces inconsistent, the fire extinguishing fluid can be more evenly dispersed. In addition, the size, direction, and arrangement interval of the claw portion 45 may be set as appropriate according to the required spray performance and the installation height of the fire extinguishing head 1.

In the deflection body 40, the first raised portion 42 and the second raised portion 44 can be formed by, for example, pressing a plate-shaped metal material. The claw portion 45 is formed by cutting or the like before or after punching, and then is bent after that. The deflection body 40 made of one metal plate in this way is less likely to be different in management or performance than the deflection body made by combining a plurality of plates.

Next, the frame 50 will be described. The frame 50 is a member that connects the main body 10 and the deflection body 40. As shown in FIG. 1, the frame 50 includes a pair of arm portions 51 and 52 extending from the main body 10 and a connecting portion 53.

Specifically, as shown in FIG. 3, the arm portions 51 and 52 are arranged so as to straddle the injection port 12. In other words, the injection port 12 is located between the arms 51 and 52. In addition, the arm portions 51 and 52 extend from the main body 10 in the direction in which the fire extinguishing fluid is sprayed (almost in the direction along the Z-axis direction), and are connected to each other at the connection portion 53.

At the connecting portion 53, while the deflection body 40 is installed, a hole 54 is formed for the threaded tube 55 to pass through. The threaded tube 55 is used to support the thermal body 30.

In the fire extinguishing nozzle 1 having such a frame 50, the spray amount toward the back side of the frame 50, that is, the spray amount toward the direction in which the arm portions 51 and 52 are arranged (in this case, the X-axis direction) will be less than in other directions . In view of this, in order to correct the unevenness of the spray amount due to the presence of the frame 50, the riser portion 60 as a form of the protrusion portion is provided.

That is, the upright portion 60 is disposed between the frame 50 and the deflector 40, and is arranged substantially along the spraying direction of the fire extinguishing fluid so that the frame 50 is along the side (rear surface) located on the opposite side of the heat-sensitive body 30 The direction of the flow of fire extinguishing fluid is changed.

In this embodiment, as shown in FIG. 1, the vertical plate portion 60 includes plates 61 and 62 corresponding to the arm portions 51 and 52, respectively, and the plates 61 and 62 are both uprightly extended in the Z-axis direction, and The ends on the deflection body 40 side are connected. That is to say, the standing plate portion 60 is a metal member formed into a thin plate shape substantially U-shaped.

Here, the plates 61 and 62 constituting the standing plate portion 60 have the same width (length in the Y-axis direction) Q (see FIG. 2 ), but the widths of the plates 61 and 62 may be different from each other. The width Q can be set as appropriate in accordance with the amount of spray toward the arrangement direction of the arms 51, 52, but from the viewpoint of avoiding contact with the operator's hands and clothing, it is preferably set to satisfy the following expression. 0.5P≦Q≦3.5P That is, if the width Q is less than half of the width P, the uniformity of the spray amount will be insufficient. Furthermore, if the width Q exceeds 3.5 times the width P, the possibility of contact with the operator increases, which is less desirable. In addition, if the width P of the arm portions 51 and 52 differs depending on the location, for example, the width of the arm portions 51 and 52 closest to the front end of the plates 61 and 62 may be the width P.

Furthermore, the distance R between the plates 61 and 62 is preferably less than the distance S between the arms 51 and 52 from the viewpoint of avoiding contact with the operator. That is to say, the following formula should be established. R≦S At this time, since the vertical plate portion 60 is located inside the frame 50 and does not protrude from the frame 50, the operator can be prevented from touching the vertical plate portion 60.

So far, the spray distribution toward the direction in which the arm portions 51 and 52 are arranged (the back side of the frame 50) depends on the distance R between the plates 61 and 62. That is, as soon as the plates 61 and 62 approach each other, the amount of water directly under the fire extinguishing nozzle 1 will increase; as soon as the plates 61 and 62 move away from each other, the amount of water further away will increase.

Furthermore, once the installation position of the fire extinguishing head 1 is relatively high, the fire extinguishing liquid will be scattered far away, and the spray amount directly under the fire extinguishing head 1 will be reduced. Therefore, even in the case where the installation position of the fire extinguishing nozzle 1 is higher than usual, the required spray performance can be obtained by narrowing or widening the distance R between the plates 61, 62.

In view of this, when the fire extinguishing sprinkler 1 is installed at a position higher than the standard installation height (about 1.6 m to 8 m) (for example, 8 m or more), the distance S between the arm portions 51 and 52 is relative to that between the plates 61 and 62 The distance R is preferably set to satisfy the following formula: 0.3S≦R≦0.7S If the distance R exceeds 0.7 times the width S of the frame 50, the flying distance of the extinguishing fluid will become too long; if the distance R is less than 0.3 times the width S of the frame 50, the amount of spray directed directly below will increase excessively, And less ideal.

In this embodiment, although the angle θ between the plates 61 and 62 and the deflection body 40 is set to the same angle, they may be different angles from each other. In addition, the angle θ is preferably from 45 degrees to 135 degrees, and further preferably from 60 degrees to 120 degrees based on the viewpoint of uniformizing the spraying amount and the adjustment of the flying distance. Here, the angle θ is set to about 90 degrees, so that the plates 61 and 62 are almost orthogonal to the deflection body 40, respectively.

<Action of fire extinguishing nozzle> Hereinafter, the operation of the fire extinguishing head 1 will be described. The fire extinguishing head 1 is usually in the state shown in FIG. 3, and the injection port 12 is closed by the valve 20. Therefore, the fire-extinguishing liquid supplied from the piping stays in the main body 10 under pressure.

Once the heat sensitive body 30 detects a predetermined amount of heat, the heat sensitive body 30 will collapse or deform. As a result, the valve 20 loses the pushing pressure of the heat-sensitive body 30 against the pressure of the fire extinguishing fluid, and is released from the injection port 12. As a result, the fire extinguishing fluid will be ejected from the injection port 12 in the directions indicated by arrows W1 and W2 in FIGS. 6 and 5.

If the discharged fire extinguishing fluid is not affected by the frame 50, the fire extinguishing fluid will collide with the first raised portion 42 of the deflection body 40 and be directed toward the outer edge of the deflection body 40 (see FIG. 5). Then, if the fire extinguishing fluid collides with the second raised portion 44, it will be guided downward by the second raised portion 44 and dispersed near the lower part of the fire extinguishing head 1 (arrow W3 in FIG. 5 ). Furthermore, if the fire extinguishing fluid collides with the claw portion 45, it is guided downward by the claw portion 45, and is dispersed in a range relatively far below the fire extinguishing head 1 (arrow W4 in FIG. 5).

At this time, by making the first raised portion 42 protrude toward the injection port 12 side more than the second raised portion 44, the amount of fire extinguishing liquid that hits the second raised portion 44 and the amount of fire extinguishing liquid that hits the pawl portion 45 , To maintain balance, and get good spraying performance.

On the other hand, if the fire extinguishing fluid sprayed from the main body 10 hits the frame 50, especially the arm portions 51 and 52, the fire extinguishing fluid will hit the plates 61 and 62 and be guided downward by the plates 61 and 62 (Figure 6). Arrow W5). However, some of the fire extinguishing fluid may also collide with the first raised portion 42 and the claw portion 45 and be guided downward. Therefore, a certain amount of spraying can be ensured in the arrangement direction of the arm portions 51, 52, and a uniform spraying distribution can be obtained in the entire spraying area.

Moreover, by widening or narrowing the distance R between the plates 61 and 62, the spraying distance toward the arrangement direction of the arm portions 51 and 52 can be adjusted. Therefore, even in the case where the fire extinguishing nozzle 1 is higher or lower than the standard installation height, an appropriate spray distribution can be obtained in the radial direction.

Furthermore, since the standing plate portion 60 (plate pieces 61, 62) is located between the deflection body 40 and the frame 50 (arm portions 51, 52), it is not easy for the operator to contact. Therefore, it is possible to suppress the situation in which the standing plate portion 60 is deformed or moved to affect the spray performance, and the operator and his clothes are damaged.

The representative embodiments of the present invention have been described above, but the present invention is not limited thereto, and various design changes can be made, and these are also included in the present invention. For example, as long as the protrusion is arranged between the frame and the deflection body and along the spraying direction of the fire extinguishing liquid, so that the scattering direction of the fire extinguishing liquid flowing from the frame in the spraying direction can be changed, any form can be adopted. .

Furthermore, in the present embodiment, the plates 61 and 62 constituting the standing plate portion 60 are connected to each other, but the plates 61 and 62 may be separated from each other. In this case, the plates 61 and 62 may also be installed by being fitted into the recess provided in the deflection body 40 or the arm 50, for example.

Furthermore, in this embodiment, in the case where the width of the frame 50 is smaller than the diameter of the deflection body 40, the relationship between the distance between the plates 61 and 62 and the width of the frame 50 has been described; When the diameter (hereinafter referred to as the diameter T) is smaller than the width of the frame 50, the distance R and the diameter T are preferably established by the following formula. R≦T (when S>T) At this time, since the upright plate portion 60 is located more inside than the deflection body 40 and does not protrude from the deflection body 40, the operator can be prevented from touching the upright plate portion 60.

At the front ends of the plates 61 and 62, notches may also be provided (see FIGS. 1 and 2 ). By making the plates 61, 62 correspond to the convex surfaces of the frame 50 (arm portions 51, 52) with concave surfaces (notches), it is easy to align the vertical plate portion 60 with respect to the frame 50 when the fire sprinkler 1 is assembled; During the construction or after installation of the fire extinguishing head 1, even if the vertical plate portion 60 accidentally hits or hooks something, the vertical plate portion 60 will not be easily rotated or displaced.

In the above-mentioned embodiment, although the case where the protruding portion is formed of a vertical plate portion and is formed into a substantially U-shaped thin plate-shaped metal member has been described, the protruding portion may also be, for example, a rod shape or a needle shape. Can be set on the frame. Furthermore, in the case of a pair of protrusions, they may not be connected.

1‧‧‧Fire extinguishing nozzle 10‧‧‧Main 11‧‧‧Inflow 12‧‧‧jet 13‧‧‧Flow 14‧‧‧Thread 20‧‧‧Valve 21‧‧‧Bottom 22‧‧‧Flange 30‧‧‧Thermal body 40‧‧‧Deflection body 42‧‧‧The first bump 44‧‧‧The second bump 45‧‧‧Claw 50‧‧‧frame 51、52‧‧‧arm 53‧‧‧Connect 54‧‧‧hole 55‧‧‧Threaded tube 60‧‧‧Standing Board Department 61, 62‧‧‧ plate D1, D2‧‧‧Interval W1～W5‧‧‧arrow

[Fig. 1] A perspective view showing the outline of a fire extinguishing nozzle 1 according to an embodiment of the present invention. [Figure 2] A side view of the fire extinguishing nozzle 1. [Fig. 3] AA cross-sectional view of Fig. 2. [Fig. 4] A bottom view of the deflection body 40. [Figure 5] A cross-sectional view showing an example of the water flow of the fire extinguishing liquid sprayed. [Fig. 6] A cross-sectional view showing another example of the water flow of the fire extinguishing liquid sprayed.

1‧‧‧Fire extinguishing nozzle

10‧‧‧Main

11‧‧‧Inflow

14‧‧‧Thread

30‧‧‧Thermal body

40‧‧‧Deflection body

42‧‧‧The first bump

44‧‧‧The second bump

45‧‧‧Claw

50‧‧‧frame

51、52‧‧‧arm

53‧‧‧Connect

55‧‧‧Threaded tube

60‧‧‧Standing Board Department

61, 62‧‧‧ plate

Claims (4)

A fire extinguishing nozzle, including: The main body has a jet port for jetting fire extinguishing fluid; Valve to block the injection port; The heat-sensitive body makes the valve close to the injection port, and once the predetermined heat is detected, the close state of the valve and the injection port is released; The deflection body withstands the collision of the fire extinguishing fluid sprayed from the spray port; A frame connecting the main body and the deflector; and The protruding portion is arranged between the frame and the deflection body, and changes the flying direction of the fire extinguishing liquid. For example, the fire extinguishing nozzle of item 1 of the patent scope, in which The frame includes a pair of arm portions that extend across the injection port and are connected to each other at the front end portion; The protruding portion is an upright portion including a pair of plates, and the pair of plates is located between the deflection body and each arm portion of the pair of arm portions. For example, the fire extinguishing sprinkler of item 2 of the patent scope, where, The width of the pair of plates is 0.5 times or more and 3.5 times or less the width of the corresponding arm. For example, the fire extinguishing nozzle of any one of the items 1 to 3 of the patent application scope, which further includes: The claw portion extends from the outer edge of the deflection body toward the injection port side; The claw part contains The first claw piece is arranged at a first interval along the outer edge of the deflector; and The second claw piece is arranged along the outer edge of the deflection body at a second interval larger than the first interval.

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