JP4927999B2 - Liquid spray nozzle and liquid spray system - Google Patents

Description

  The present invention relates to a liquid spray nozzle for spraying a liquid and a technique related thereto.

  There is a liquid spray nozzle that sprays liquid (see Patent Document 1 and the like).

  In the liquid spray nozzle, the liquid radiated from the radiation port of the main body part collides with an obstacle (collision surface) fixed through the support part from the main body part to form a mist.

  By the way, the collision surface (opposing surface) of the obstacle is provided perpendicular to the radiation direction of the liquid radiated from the radiation port. In addition, the obstacle (collision surface) is provided at a position facing the radiation port via a column or the like standing from the main body. Specifically, the obstacle is supported by a beam of the support portion, and the beam is supported by a support column erected on the main body portion.

  When the liquid collides with such a collision surface and the liquid is sprayed in the form of a mist, the liquid is scattered in all directions around the collision surface, and a part of the liquid scattered from the collision surface Collides again with the pillars that support the obstacles. Then, the part of the liquid (mist-like liquid) returns to the liquid droplets again at the column, and drops down outside the head through the column and the like. That is, the part of the liquid does not contribute to the atomization of the liquid. Among the liquids (for example, water) radiated from the radiating port (ejecting port), some of the liquids are components that do not effectively form a mist (ineffective components from the viewpoint of scattering the liquid in a mist). Yes, it is also called “invalid liquid” or “invalid water”. Such ineffective water is preferably reduced.

International Publication No. 2009/153848

  The subject of this invention is providing the technique which reduces an ineffective liquid and disperse | distributes a liquid to a mist more efficiently.

In order to solve the above-mentioned problem, a first aspect of the present invention is a liquid spray nozzle, wherein a main body having an injection port for injecting a liquid having a pressure of 1 MPa or less, and a jet flow injected from the injection port A collision surface that collides, and a collision surface that scatters the jet in a mist shape, and a support member that is disposed in a part of the periphery of the injection port in the main body and supports the collision surface, The collision surface is a surface oblique to the jet direction of the jet, and the jet after the collision with the collision surface is scattered toward the main scattering region, and the support member is disposed outside the main scattering region. The jet is jetted upward from the jetting port, the main body has a concave liquid receiving part for receiving a part of the liquid dripped from the collision surface, The liquid receiving part is provided on the main body part. A liquid having a concave space formed inside an annular projecting portion provided on the front end side, wherein the part of the liquid merges with a jet flow ejected from the ejection port and collides with the collision surface again. It is a spray nozzle.

A second aspect of the present invention is a liquid spray nozzle, which is a collision surface on which a main body having an injection port for injecting a liquid having a pressure of 1 MPa or less and a jet flow injected from the injection port collide. A collision surface that scatters the jet in a mist shape, and a support member that is disposed in a part of the peripheral portion of the injection port in the main body and supports the collision surface. The support member is provided on the back side of the collision surface, the jet is injected upward from the injection port, and the main body portion is formed from the collision surface. It has a concave liquid receiving part that receives a part of the liquid that has dropped, the injection port is provided in the liquid receiving part, and the liquid receiving part is provided on the upper tip side of the main body part. It has a concave space formed inside the annular protrusion, and the part of the liquid is A liquid spray nozzle that merges with the jet flow ejected from the ejection port and collides with the collision surface again.

According to a third aspect of the present invention, there is provided a liquid spray system comprising: a liquid spray nozzle that sprays a liquid having a pressure of 1 MPa or less to cool the space; a liquid supply unit that supplies the liquid to the liquid spray nozzle; The liquid spray nozzle is a main body having an ejection port for ejecting liquid, a collision surface on which a jet flow ejected from the ejection port collides, and a collision surface that scatters the jet flow in a mist form, A support member that supports the collision surface and is disposed on a part of the periphery of the injection port in the main body, and the collision surface is a surface that is oblique to the injection direction of the jet flow. The jet after the collision with the collision surface is scattered toward the main scattering region, the support member is disposed outside the main scattering region, and the jet is injected upward from the injection port, and the main body The part is a part that dripped from the collision surface A liquid receiving portion having a concave shape for receiving the liquid, and the injection port is provided in the liquid receiving portion, and the liquid receiving portion is formed by an annular projecting portion provided on an upper tip side of the main body portion. The liquid spray system has a concave space formed inside, and the part of the liquid joins a jet flow ejected from the ejection port and collides with the collision surface again.

According to a fourth aspect of the present invention, there is provided a liquid spray system comprising: a liquid spray nozzle that sprays a liquid having a pressure of 1 MPa or less; and a liquid supply unit that supplies the liquid to the liquid spray nozzle. The spray nozzle is a main body having an injection port for injecting a liquid, a collision surface on which a jet flow ejected from the injection port collides, a collision surface for scattering the jet flow in a mist state, and the main body portion A support member that is disposed in a part of the periphery of the injection port and supports the collision surface, and the collision surface is a surface that is oblique to the injection direction of the jet flow, and the support member is Provided on the back side of the collision surface, the jet is ejected upward from the ejection port, and the main body portion has a concave liquid receiving portion for receiving a part of the liquid dripping from the collision surface. The injection port is provided in the liquid receiving part. The liquid receiving part has a concave space formed inside an annular projecting part provided on the upper tip side of the main body part, and the part of the liquid is jetted from the jetting port. And a liquid spray system which collides with the collision surface again.

According to the present invention, it is possible to reduce the ineffective liquid and more efficiently disperse the liquid in a mist form. In particular, a part of the liquid dripping from the collision surface is received by the concave liquid receiving part, merges with the jet flow ejected from the injection port, and collides with the collision surface again. It is possible to more efficiently disperse the liquid in a mist form.

FIG. 1 is a system configuration diagram of a liquid spray system. FIG. 2 is a diagram illustrating an arrangement state of the liquid spray nozzles. FIG. 3 is a perspective view of the liquid spray nozzle. FIG. 4 is a top view of the liquid spray nozzle. FIG. 5 is a front view of the liquid spray nozzle. FIG. 6 is a side view of the liquid spray nozzle. FIG. 7 is a side sectional view of the liquid spray nozzle. FIG. 8 is a side view of the liquid scattering state. FIG. 9 is a diagram of the liquid scattering state as viewed from above. FIG. 10 is a diagram illustrating a state in which a part of the liquid is dropped into the liquid receiving part and refluxed. FIG. 11 is a side sectional view of a liquid spray nozzle according to a modification. FIG. 12 is a system configuration diagram of a liquid spray system according to the second embodiment. FIG. 13 is a diagram illustrating a liquid spray nozzle according to a comparative example. FIG. 14 is a diagram illustrating a state of spraying by the liquid spray nozzle according to the comparative example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1. First Embodiment>
<1-1. System configuration>
FIG. 1 is a system configuration diagram of a liquid spray system 1 (also referred to as 1A) according to the first embodiment. The liquid spray system 1A is a system that cools a space by spraying a liquid, and is also referred to as a cooling system (specifically, a space cooling system).

  As shown in FIG. 1, the liquid spray system 1A includes a supply valve 2, an electromagnetic valve 4, a pump 5, a drain valve 6, a controller 7, a temperature / humidity sensor 8, and a liquid spray nozzle 30 (also referred to as 30A).

  In the liquid spray system 1A, a liquid supply path for the liquid spray nozzle 30 is formed. Specifically, the supply valve 2, the electromagnetic valve 4, the pump 5, the liquid spray nozzle 30, and the drain valve 6 are connected to each other via a connecting pipe, and the liquid ( Tap water or the like) is supplied to the liquid spray nozzle 30 in accordance with the opening of the solenoid valve 4 or the like. In this liquid spray system 1A, when liquid is sprayed by the liquid spray nozzle 30, a relatively low pressure (for example, 1 MPa or less) water discharge pressure is applied to the liquid spray nozzle 30 at the same level as when tap water is used as it is. . In other words, appropriate spraying can be performed by low-pressure water discharge without high-pressure water discharge using a pressurizing device.

  During normal operation other than during maintenance, the supply valve 2 is opened and the drain valve 6 is closed. Then, according to the opening and closing of the electromagnetic valve 4, the presence or absence of the supply of liquid (here, water (more specifically, tap water)) to the liquid spray nozzle 30 is switched. Specifically, the controller 7 controls the operation of the electromagnetic valve 4 and the pump 5 based on the detection result (temperature T and humidity H) by the temperature / humidity sensor 8 and determines whether or not the liquid is supplied to the liquid spray nozzle 30. Switch.

  More specifically, when a predetermined condition C1 (described below) is not satisfied, the electromagnetic valve 4 is closed and the pump 5 is stopped, and the liquid supply to the liquid spray nozzle 30 is stopped. Here, examples of the condition C1 include that the temperature T is equal to or higher than a predetermined temperature T1 (for example, 30 ° C.) and the humidity H is equal to or lower than the predetermined humidity H1 (for example, 75%).

  On the other hand, when the condition C1 is satisfied, the solenoid valve 4 is opened and the pump 5 is changed to an operating state, and liquid (here, water) is supplied to the liquid spray nozzle 30 using the pump 5. Is done. And a liquid (water) is sprayed from the liquid spray nozzle 30, and space is cooled using the vaporization heat of the said liquid.

  In addition, although the case where the spray of the liquid from the liquid spray nozzle 30 is automatically controlled is illustrated here, the present invention is not limited to this, and the spray of the liquid from the liquid spray nozzle 30 is performed according to a manual operation. It may be performed.

  FIG. 2 is a diagram illustrating an arrangement state of the liquid spray nozzle 30. In the liquid spray system 1A, a plurality of liquid spray nozzles 30 are provided. The plurality of liquid spray nozzles 30 are arranged at a predetermined distance from each other in the horizontal direction. In the system configuration diagram of FIG. 1, it is shown in a simplified manner that a plurality of liquid spray nozzles 30 are connected to a connection pipe from the pump 5. In practice, as shown in FIG. 2, in the immediate vicinity of the liquid spray nozzle 30, a horizontal connection pipe is provided as a part of the connection pipe from the pump 5, and branches from the horizontal connection pipe and extends vertically upward. A plurality of connecting pipes 70 are provided. The liquid spray nozzle 30 is attached to each of the plurality of connection pipes 70.

  The liquid spray nozzles 30 are supplied with the liquid from the pump 5 via the connection pipes 70 extending in the vertical direction. As will be described later, the liquid spray nozzle 30 causes the liquid ejected from the ejection port 45 to collide with the collision surface 53 to scatter the liquid in a mist form (see FIG. 8).

  Further, as will be described later, the liquid spray nozzle 30 can reduce the ineffective water and efficiently scatter the liquid in a mist form. Therefore, the liquid spray system 1A can obtain an efficient cooling effect.

<1-2. Liquid spray nozzle>
3-7 is a figure which shows the liquid spray nozzle 30 which concerns on this embodiment. 3 is a perspective view, FIG. 4 is a top view, FIG. 5 is a front view, FIG. 6 is a side view, and FIG. 7 is a side sectional view.

  As shown in these drawings, the liquid spray nozzle 30 includes a nozzle body 40 and a nozzle tip 50.

  As shown in FIG. 3 and the like, the nozzle main body 40 has a substantially cylindrical shape. A substantially hexagonal column-shaped wide portion 41 having a relatively large diameter is provided at the center in the vertical direction of the nozzle main body 40. In addition, a screw portion 42 is provided on the outer peripheral surface on the lower side of the nozzle main body 40, and a substantially cylindrical base portion 43 is provided on the upper side of the nozzle main body 40.

  The screw part 42 of the liquid spray nozzle 30 and the screw part (not shown) provided on the inner wall of the tip of the connection pipe 70 (FIG. 2) are screwed together, so that the liquid spray nozzle 30 and the connection pipe 70 are fixed. The As shown in FIG. 2, the connection pipe 70 is a piping path that supplies the liquid (water) from the pump 5 to the liquid spray nozzle 30 in the immediate vicinity of the liquid spray nozzle 30.

  The base part 43 has a substantially cylindrical shape. However, a concave liquid receiving portion 44 is provided at the uppermost portion of the base portion 43. Specifically, an annular projecting portion 43T is provided on the upper tip side of the base portion 43, and a concave space inside thereof is formed as the liquid receiving portion 44. The bottom surface of the liquid receiving part 44 is a flat surface, and an injection port 45 for injecting liquid is provided at the center of the liquid receiving part 44 (on the central axis AX1 (see FIG. 8)). In addition, the liquid receiving part 44 can receive a part of the liquid dripped (dropped) from the collision surface 53 (described later).

  As shown in FIG. 7, a pipe 46 that is a liquid flow path is provided inside the nozzle main body 40. The conduit 46 has a substantially cylindrical shape. However, the distal end portion of the conduit 46 is formed with a substantially conical surface whose diameter gradually decreases from the upstream side (the lower side in the figure) toward the downstream side (the upper side in the figure), and is formed at the upper part of the nozzle main body 40. It is connected to the provided small-diameter injection port 45. In addition, when the diameter of the pipe line is reduced before the injection port 45, the speed of the fluid (liquid) flowing through the pipe line 46 is increased, and the fluid is ejected vigorously upward from the injection port 45 in the vertical direction. Is done.

  The nozzle tip 50 includes a support member 51 and a collision member (also referred to as an obstacle) 52.

  As shown in FIG. 3 and the like, the support member 51 is fixedly disposed on a part of the periphery of the injection port 45 in the base part 43, more specifically, on a part of the annular projecting part 43T of the base part 43. Is done. The support member 51 is an arm-like member that extends vertically upward from a fixed position on the annular projecting portion 43T and extends while being inclined toward the central axis AX1 (see FIG. 8) side. The support member 51 supports the collision member 52 (and thus the collision surface 53) at the upper end portion thereof.

  The collision member 52 is a member having a substantially cylindrical shape, and is arranged and fixed so as to protrude downward (more specifically, obliquely downward) at the upper end portion of the support member 51.

  The lower surface 53 of the substantially cylindrical collision member 52 is a substantially circular surface disposed at an upper position (opposed position) of the injection port 45, and is a surface on which a jet flow spouted upward from the injection port 45 collides. The lower surface 53 is also referred to as a collision surface. The radius of the lower surface (collision surface) 53 is larger than the radius of the injection port 45, and the lower surface (collision surface) 53 has an area larger than the opening area of the injection port 45.

  The collision surface 53 is arranged so as to be oblique to the injection direction (here, the vertical direction) of the jet injected from the injection port 45. Specifically, the collision surface 53 is arranged in a state where the normal line of the collision surface 53 and the jet direction of the jet flow have a predetermined inclination angle (for example, 30 degrees). In other words, the collision surface 53 is disposed at a predetermined angle (inclination angle) with respect to a surface perpendicular to the jet direction of the jet. Note that the inclination angle of the collision surface 53 is not limited to 30 degrees, and may be another value.

  Further, the collision surface 53 is also expressed as a surface facing the opposite side (right side) to the direction in which the support member 51 is present with respect to the ejection port 45 in a side view (see FIG. 7).

<1-3. Spraying with liquid spray nozzle>
Next, spraying by the liquid spray nozzle 30 according to the present embodiment will be described in more detail. However, below, first, the state of spraying by the liquid spray nozzle 90 according to the comparative example will be described, and then the state of spraying by the liquid spray nozzle 30 according to the present embodiment will be described.

<Spraying with a liquid spray nozzle according to a comparative example>
FIG. 13 is a view showing a liquid spray nozzle 90 according to a comparative example, and FIG. 14 is a view showing a state of the spray. The liquid spray nozzle 90 is similar to the liquid spray nozzle according to the prior art. However, for easy comparison with the present embodiment, the vertical direction of the liquid spray nozzle 90 is shown aligned with the direction of the liquid spray nozzle 30, and the collision member 95 has a substantially cylindrical shape instead of a substantially truncated cone shape. is doing.

  As shown in FIG. 13, the liquid spray nozzle 90 according to the comparative example has a main body portion 91 and a support portion 92. The support portion 92 includes three beams 94 that support the collision member 95 and three columns 93 that support the beams 94. Further, the collision surface (opposing surface) 96 of the collision member 95 is provided perpendicular to the ejection direction of the liquid ejected from the ejection port 97.

  In the liquid spray nozzle 90 according to such a comparative example, the liquid (jet) ejected from the ejection port 97 travels upward in the vertical direction and collides with the collision surface 96, and then mainly travels in the traveling direction of about 90. Change the degree and proceed to the side. More specifically, the liquid scatters in an atomized state in all directions (360 degrees) around the collision surface 96. In short, the liquid scatters in all directions with no directivity. In FIG. 14, a scattering region RG9 of the liquid is shown.

  At this time, the pillars 93 are present in a part of the entire circumferential direction of the collision surface 96 (for example, a direction of 60 degrees, a direction of 180 degrees, and a direction of 300 degrees). Therefore, some of the scattered liquid collides with the support column 93 again. Then, the part of the liquid (atomized liquid) returns to the droplet again after colliding with the support column 93, and passes through the support column 93, the main body 91, and the like to the outside of the liquid spray nozzle 90. Dripping down. That is, the part of the liquid does not contribute to the atomization of the liquid. Thus, a relatively large amount of “invalid liquid” (“invalid water”) is generated in the liquid spray nozzle 90. In this comparative example, the invalid liquid resulting from the above-mentioned “re-collision” is generated for all the three columns 93. Even if the number of support columns 93 is simply reduced from three to one, an invalid liquid due to the above-described “re-collision” is generated in one post 93 after the reduction.

<Spraying by liquid spray nozzle according to the embodiment>
Next, spraying by the liquid spray nozzle 30 according to the present embodiment will be described.

  When the liquid (water) from the pump 5 rises from the lower side in the vertical direction through the connection pipe 70 and reaches the liquid spray nozzle 30, the liquid (water) passes through the conduit 46 inside the liquid spray nozzle 30 to the injection port 45. (See FIG. 2 and FIG. 7). Then, the liquid is ejected vertically upward from the ejection port 45 and collides with the collision surface 53. The jet flows in the form of a mist due to the collision with the collision surface 53.

  By the way, in the liquid spray nozzle 90 according to the above comparative example, the collision surface 96 is arranged perpendicular to the jet direction of the jet.

  On the other hand, in the liquid spray nozzle 30 according to this embodiment, the collision surface 53 is provided so as to cross obliquely with respect to the jet direction of the jet.

  Therefore, in the liquid spray nozzle 30, the liquid that has collided with the collision surface 53 is scattered in a mode (described below) different from the mode in the liquid spray nozzle 90. Specifically, the liquid that has collided with the collision surface 53 does not scatter evenly toward the entire circumference of the collision surface 53, but scatters in a state having directivity.

  FIG. 8 and FIG. 9 are diagrams showing a state of scattering of liquid in the liquid spray nozzle 30.

  The jet stream L1 ejected from the ejection port 45 travels upward in the vertical direction and collides with the collision surface 53. As described above, the collision surface 53 is oblique to the jet direction (vertical direction) of the jet L1. Therefore, the jet (liquid) L <b> 2 after colliding with the collision surface 53 proceeds obliquely upward along the collision surface 53. Then, the jet L2 is mist-like and scattered.

  Specifically, the jet L2 after colliding with the collision surface 53 basically has a collision position with the collision surface 53 (intersection of the central axis AX1 and the collision surface 53) as shown in FIGS. Then, it travels and scatters along the collision surface 53 obliquely upward (oblique upper right side in FIG. 8, right side in FIG. 9). In other words, the jet L2 after the collision scatters in the form of a mist toward the side opposite to the support member 51 (the right side in the drawing) with respect to the central axis AX1 of the liquid spray nozzle 30 (and the pipe 46). More specifically, the jet L2 scatters in a mist form in the main scattering region RG1 (see FIGS. 8 and 9). The main scattering region RG1 is a main scattering region (space) of the jet flow L2 after the collision, and is a region that mainly extends on the opposite side of the support member 51 with respect to the collision position between the jet flow and the collision surface 53. is there. In short, the main scattering region RG1 is a region that is biased to the opposite side to the support member 51 in a top view and a side view.

  On the other hand, the jet flow after the collision hardly scatters from the collision position to the diagonally lower side (diagonal lower left side in FIG. 8, left side in FIG. 9). That is, the jet flow after the collision hardly scatters to the support member 51 side and hardly collides with the support member 51. In other words, the support member 51 is disposed outside the main scattering region RG1 of the jet after the collision. Therefore, almost no invalid water (ineffective liquid) is generated.

  As described above, the collision surface 53 is arranged so as to cross obliquely with respect to the injection direction (vertical direction) of the jet stream L1, and thus, compared with the comparative example, the direction of the jet stream L2 after the collision is related to the scattering direction. Sexuality is increasing. The support member 51 that supports the collision surface 53 has a collision position between the jet L1 and the collision surface 53 (intersection of the central axis AX1 and the collision surface 53) in a side view and a top view (see FIGS. 8 and 9). On the other hand, it is arrange | positioned on the opposite side to the direction in which the jet stream L2 after a collision scatters. In other words, the support member 51 is provided on the back side of the collision surface 53. As a result, it is avoided or reduced that the jet flow which has collided with the collision surface 53 and collided with the support member 51 again. Therefore, the generation of invalid water (ineffective liquid) is also reduced. Therefore, it is possible to more efficiently disperse the liquid in a mist form.

  Further, as shown in FIG. 10, a part of the jet (liquid) L <b> 1 that collides with the collision surface 53 stays on the collision surface 53 so as to stick to the collision surface 53 when viewed macroscopically. Further, a part of the portion DP drops from the lower portion of the inclined collision surface 53 (the left end of the collision surface 53 in FIG. 10) toward the liquid receiver 44. Since the liquid receiving portion 44 is formed as a concave space surrounded by the annular projecting portion 43T, it can receive a predetermined amount of liquid. The liquid droplets (water droplets) that have fallen into the liquid receiver 44 move again to the injection port 45, merge into the jet, and are again injected toward the collision surface 53 and collide with the collision surface 53. In this way, the invalid liquid (invalid water) dripping from the lower part of the collision surface 53 toward the liquid receiving part 44 returns to the jet flow from the injection port 45 (that is, recirculates). Therefore, it is possible to reuse the ineffective liquid and more efficiently disperse the liquid in a mist form.

  In the above embodiment, the case where the support member 51 supports the collision surface 53 via the collision member 52 is exemplified, but the present invention is not limited to this. For example, as shown in FIG. 11, a collision surface 56 may be provided on a part of the support member 51 so that the support member 51 directly supports the collision surface 56. The collision surface 56 is provided integrally with the support member 51 on a part of the lower surface on the front end side of the support member 51. FIG. 11 is a cross-sectional view showing a liquid spray nozzle 30 (also referred to as 30C) according to such a modification.

  Also in the modified example, the support member 51 is disposed outside the main scattering region RG1 of the jet L2 after the collision, as in the above embodiment. Specifically, in the top view, the support member 51 is the direction in which the jet L2 after the collision scatters with respect to the collision position between the jet L1 and the collision surface 53 (intersection of the central axis AX1 and the collision surface 53). Arranged in the opposite direction. As a result, re-collision (with respect to the support member 51) of the atomized jet is avoided or reduced. Accordingly, the generation of invalid water (ineffective liquid) is reduced, and the liquid can be more efficiently scattered in a mist form.

  However, the collision surface 56 of the liquid spray nozzle 30 </ b> C according to this modification is provided continuously from the other part of the support member 51 as a part of the support member 51, and protrudes downward with respect to the support member 51. Absent. Therefore, of the liquid that has collided with the collision surface 56, the component that stays on the collision surface 53 so as to stick to the collision surface 56 is the lower part of the inclined collision surface 56 (the left end of the collision surface 56 in FIG. 11). ) From the liquid receiving part 44 to the outside of the liquid receiving part 44 (outside of the liquid spray nozzle 30). In order to avoid or reduce the occurrence of such a phenomenon, it is preferable to provide the collision surface 53 below the collision member 52 provided so as to protrude downward from the support member 51 as in the above-described embodiment. Specifically, it is preferable to provide the collision surface 53 on the bottom surface side of the substantially cylindrical collision member 52 having a relatively large thickness (height). According to this, it is possible to prevent the liquid droplet from being directly transmitted from the collision surface 53 to the support member 51, and it is possible to avoid or reduce the occurrence of the above phenomenon.

<2. Second Embodiment>
The second embodiment is a modification of the first embodiment. Hereinafter, the difference from the first embodiment will be mainly described.

  FIG. 12 is a system configuration diagram of a liquid spray system 1 (also referred to as 1B) according to the second embodiment. The liquid spray system 1B is a system that extinguishes fire by spraying liquid (extinguishing liquid), and is also referred to as a fire extinguishing system. In addition, although the case where water is used as an extinguishing liquid is illustrated here, as will be described later, the present invention is not limited thereto, and various extinguishing agents may be used as a liquid to be sprayed (extinguishing liquid). .

  As shown in FIG. 12, the liquid spray system 1B includes a water tank 13, a pump 15, a partition valve 14, a manual operation box 16, a controller 17, a flame detector 18, an alarm device 19, and a liquid spray nozzle 30.

  In the liquid spray system 1B, the water tank 13, the pump 15, the partition valve 14, and the liquid spray nozzle 30 are connected to each other via a connecting pipe, and fire extinguishing liquid (water) from the water tank is appropriately used. Supplied to the liquid spray nozzle 30.

  Specifically, at the time of non-fire, the partition valve 14 is closed, and water is not supplied to the liquid spray nozzle 30. On the other hand, when a fire is detected by the flame detector 18, the controller 17 opens the compartment valve 14 of the compartment corresponding to the flame detector 18 that has detected the fire, and starts supplying water to the liquid spray nozzle 30. . Thereby, water (extinguishing liquid) is sprayed from the liquid spray nozzle 30. Each partition valve 14 can be opened and closed even in response to a manual operation using the manual operation box 16. That is, it is possible to start and stop the supply of the fire-extinguishing liquid from the liquid spray nozzle 30 also by the manual operation.

  In such a liquid spray system 1B, by using the same liquid spray nozzle 30 (30A, 30B) as described above, it is possible to reduce the ineffective water and efficiently spray the liquid (extinguishing liquid). It is. Moreover, since the fire-extinguishing liquid can be efficiently sprayed in the form of a mist, a high fire-extinguishing effect can be obtained.

<3. Other>
Although the embodiments of the present invention have been described above, the present invention is not limited to the contents described above.

  For example, in each of the above embodiments, water is exemplified as the liquid sprayed by the liquid spray nozzle. However, the present invention is not limited to this and may be other liquids. Specifically, various fire extinguishing agents, various deodorizing agents, various insect repellents, various herbicidal agents and the like may be used. Note that various liquid spray systems can be constructed by appropriately determining the type of liquid sprayed by the liquid spray nozzle 30. For example, by spraying a deodorizing chemical with the liquid spray nozzle 30, a liquid spray system (deodorizing system in short) for the purpose of “deodorizing” or the like can be constructed. Further, by spraying the herbicidal agent with the liquid spray nozzle 30, a liquid spraying system (herbicide spraying system in short) for the purpose of “herbicidal” or the like can be constructed.

  Moreover, in each said embodiment, although the case where the collision member 52 of the liquid spray nozzle 30 exists in the perpendicular direction upper side of the injection nozzle 45 was illustrated, this invention is not limited to this. For example, the liquid spray nozzle 30 may be turned upside down so that the collision member 52 of the liquid spray nozzle 30 exists below the ejection port 45 in the vertical direction.

  Moreover, in each said embodiment, although the case where the liquid spray nozzle 30 was arrange | positioned so that center axis AX1 of the liquid spray nozzle 30 may follow a perpendicular direction was illustrated, this invention is not limited to this. For example, the liquid spray nozzle 30 may be arranged so that the central axis AX1 of the liquid spray nozzle 30 is oblique to the vertical direction. Alternatively, the liquid spray nozzle 30 may be arranged so that the central axis AX1 of the liquid spray nozzle 30 intersects perpendicularly to the vertical direction.

  Moreover, in each said embodiment, although the case where the supporting member 51 was comprised with one arm-shaped member was illustrated, this invention is not limited to this, The supporting member 51 has two or more components (for example, support | pillar and Or a beam).

  Moreover, in each said embodiment, although the case where the collision surface 53 was supported by the single support member 51 was illustrated, this invention is not limited to this. For example, the collision surface 53 may be supported by a plurality of support members standing at different positions on the annular protrusion 43T. In this case, it is preferable that any of the plurality of support members is disposed outside the main scattering region RG1 of the jet L2 after the collision with the collision surface 52.

  Moreover, in each said embodiment, although the case where the collision surface 53 was a plane was illustrated, this invention is not limited to this. For example, the collision surface 53 may be a concave surface or a convex surface.

  Moreover, in each said embodiment, although the case where the bottom face of the liquid receiving part 44 was a plane was illustrated, this invention is not limited to this, For example, the shape of the bottom face of the liquid receiving part 44 is reverse cone shape. It may be present, or it may be bowl-shaped. In other words, the bottom surface of the liquid receiving unit 44 may be inclined toward the injection port 45 so that the liquid received by the liquid reception unit 44 collects at the injection port 45.

1, 1A, 1B Liquid spray system 30, 30A, 30B, 30C Liquid spray nozzle 40 Nozzle body part 42 Screw part 43 Base part 43T Annular protrusion 44 Liquid receiving part 45 Injection port 46 Pipe line 50 Nozzle tip part 51 Support member 52 Colliding member 53, 56 Colliding surface 70 Connecting pipe DP Partial RG1 Main scattering area

Claims (10)

A liquid spray nozzle,
A main body having an injection port for injecting a liquid having a pressure of 1 MPa or less ;
A collision surface on which the jet flow ejected from the ejection port collides, and the collision surface which scatters the jet flow in a mist shape;
A support member that is disposed in a part of the peripheral portion of the injection port in the main body and supports the collision surface;
With
The collision surface is a surface oblique to the jet direction of the jet, and the jet after the collision with the collision surface is scattered toward the main scattering region,
The support member is disposed outside the main scattering region,
The jet is jetted upward from the jet port,
The main body has a concave liquid receiving portion that receives a part of the liquid dripped from the collision surface,
The injection port is provided in the liquid receiving part,
The liquid receiving part has a concave space formed inside an annular protrusion provided on the upper tip side of the main body part,
The part of the liquid is a liquid spray nozzle that joins a jet flow ejected from the ejection port and collides with the collision surface again. The liquid spray nozzle according to claim 1,
The support member is a liquid spray nozzle that extends vertically upward from a fixed position on the annular projecting portion and extends while inclining toward the central axis side of the liquid spray nozzle to support the collision surface . The liquid spray nozzle according to claim 1 or 2,
The main scattering area is a liquid spray nozzle that is an area that mainly extends on the opposite side of the support member with respect to the collision position of the jet on the collision surface. The liquid spray nozzle according to any one of claims 1 to 3,
The collision surface is provided on a collision member,
The collision member is a liquid spray nozzle provided to protrude downward from the support member. The liquid spray nozzle according to claim 4.
The collision member has a substantially cylindrical shape,
The collision surface is a liquid spray nozzle provided on the bottom surface side of the collision member. The liquid spray nozzle according to any one of claims 1 to 5,
The liquid spray nozzle, wherein the collision surface is a flat surface. The liquid spray nozzle according to any one of claims 1 to 6,
The liquid spray nozzle, wherein the collision surface is a circular plane. A liquid spray nozzle,
A main body having an injection port for injecting a liquid having a pressure of 1 MPa or less ;
A collision surface on which the jet flow ejected from the ejection port collides, and the collision surface which scatters the jet flow in a mist shape;
A support member that is disposed in a part of the peripheral portion of the injection port in the main body and supports the collision surface;
With
The collision surface is a surface oblique to the jet direction of the jet,
The support member is provided on the back side of the collision surface,
The jet is jetted upward from the jet port,
The main body has a concave liquid receiving portion that receives a part of the liquid dripped from the collision surface,
The injection port is provided in the liquid receiving part,
The liquid receiving part has a concave space formed inside an annular protrusion provided on the upper tip side of the main body part,
The part of the liquid is a liquid spray nozzle that joins a jet flow ejected from the ejection port and collides with the collision surface again. A liquid spray system,
A liquid spray nozzle for spraying a liquid having a pressure of 1 MPa or less to cool the space;
Liquid supply means for supplying a liquid to the liquid spray nozzle;
With
The liquid spray nozzle is
A main body having an ejection port for ejecting liquid;
A collision surface on which the jet flow ejected from the ejection port collides, and the collision surface which scatters the jet flow in a mist shape;
A support member that is disposed in a part of the peripheral portion of the injection port in the main body and supports the collision surface;
Have
The collision surface is a surface oblique to the jet direction of the jet, and the jet after the collision with the collision surface is scattered toward the main scattering region,
The support member is disposed outside the main scattering region,
The jet is jetted upward from the jet port,
The main body has a concave liquid receiving portion that receives a part of the liquid dripped from the collision surface,
The injection port is provided in the liquid receiving part,
The liquid receiving part has a concave space formed inside an annular protrusion provided on the upper tip side of the main body part,
The liquid spray system in which the part of the liquid joins a jet flow ejected from the ejection port and collides with the collision surface again. A liquid spray system,
A liquid spray nozzle for spraying a liquid having a pressure of 1 MPa or less ;
Liquid supply means for supplying a liquid to the liquid spray nozzle;
With
The liquid spray nozzle is
A main body having an ejection port for ejecting liquid;
A collision surface on which the jet flow ejected from the ejection port collides, and the collision surface which scatters the jet flow in a mist shape;
A support member that is disposed in a part of the peripheral portion of the injection port in the main body and supports the collision surface;
Have
The collision surface is a surface oblique to the jet direction of the jet,
The support member is provided on the back side of the collision surface,
The jet is jetted upward from the jet port,
The main body has a concave liquid receiving portion that receives a part of the liquid dripped from the collision surface,
The injection port is provided in the liquid receiving part,
The liquid receiving part has a concave space formed inside an annular protrusion provided on the upper tip side of the main body part,
The liquid spray system in which the part of the liquid joins a jet flow ejected from the ejection port and collides with the collision surface again.

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