JP5119096B2 - Mist nozzle for fire fighting - Google Patents

Description

  The present invention relates to a fire extinguishing mist nozzle capable of spraying a liquid in a mist form.

  Conventionally, fire extinguishing mist nozzles have been individually designed and processed to suit a desired jetting angle and jetting mist amount. Therefore, in order to obtain a mist suitable for a fire extinguishing target, it is necessary to prepare a molding means such as a mold and a processing apparatus for manufacturing a fire extinguishing mist nozzle that satisfies each requirement and specification.

Conventional fire extinguishing mist nozzles, for example, as described in Patent Document 1, prepared in advance nozzles with different sprinkling distributions, such as a near throw nozzle and a far throw nozzle, and extinguishing an object by appropriately arranging them. . Patent Document 1 has a structure in which the above-mentioned different types of nozzles are provided in one main body. However, since such a mist nozzle has a complicated three-dimensional structure, cutting is not necessary for its molding. Advanced processing techniques such as these are required. As a result, it becomes very difficult to keep the manufacturing cost of the mist nozzle low. In addition, such a conventional fire extinguishing mist nozzle is designed and processed once so that each component of the mist nozzle is adapted to a certain specification. The molded parts are not molded to meet multiple requirements.
JP 2001-95935 A

  As described above, in order to obtain a mist suitable for various fire extinguishing targets, it is necessary to design each part of a fire extinguishing mist nozzle that conforms to each specification. As described above, the fire extinguishing mist nozzle once designed and processed to meet a certain specification is used only as the specification. However, producing fire-fighting mist nozzles that meet individual requirements one after another immediately raises the problem of increased manufacturing costs.

  The present invention solves the above-described technical problems, thereby obtaining a degree of freedom of various characteristics of the fire-extinguishing mist nozzle and greatly contributing to the reduction of the manufacturing cost of the fire-extinguishing mist nozzle. The inventors pay attention to the fact that each component constituting a conventional fire extinguishing mist nozzle cannot inject mist other than a predetermined specification, and the structure and function of each component of a mist nozzle called a swivel type We conducted intensive research on. As a result, the functions of various parts that are considered to determine the characteristics of the mist nozzle are subdivided to simplify and share the parts, and by allowing them to be freely combined, the above-mentioned problems can be solved simultaneously. It was found to be solved. The present invention was created based on such a viewpoint.

  One fire-extinguishing mist nozzle according to the present invention includes an opening that constitutes a vortex chamber in which a liquid swirls, and an opening that constitutes one or a plurality of flow paths that flow into the vortex chamber in the direction of rotation of the liquid. And the three or more first thin plates in which the introduction ports for introducing the liquid into the flow channel are formed, and the flow channel and a part of the inner wall of the vortex chamber are formed and the introduction port is formed. And a second thin plate and an orifice plate having an orifice for ejecting the liquid. Then, the second thin plate is placed at an arbitrary position between the three or more first thin plates and overlapped, and the orifice plate is further overlapped so that the flow path and the vortex described above are overlapped. A liquid introducing portion for the liquid described above is formed to be connected to the chamber and the inlet.

  According to this fire-extinguishing mist nozzle, the above-mentioned second thin plate is arranged at an arbitrary position between three or more first thin plates and overlapped, whereby the mist injection angle, which is the main characteristic of the mist nozzle, and It is possible to obtain flexibility with respect to the injection amount at low cost. Specifically, first, since the cross-sectional area of the flow path can be changed by adjusting the number of first thin plates from the second thin plate to the orifice plate, without changing the design or processing of the component itself, The mist injection angle and / or injection amount can be varied. Further, a simple structure in which one first thin plate has only three kinds of holes constituting a liquid vortex chamber, a liquid flow path, and an introduction port for introducing liquid into the flow path is employed. Yes. Furthermore, the second thin plate is also a simple work piece in which the aforementioned inlet is formed. Therefore, the manufacturing cost can be reduced as compared with the prior art.

  Another fire-extinguishing mist nozzle of the present invention forms an opening that forms a vortex chamber in which a liquid swirls, and one or a plurality of flow paths that flow into the vortex chamber in the direction of rotation of the liquid. Three or more first thin plates in which an opening and an introduction port for introducing the liquid to the flow path are formed, and the flow path and a part of the inner wall of the vortex chamber are formed and the introduction port is formed. The second thin plate, an orifice plate having an orifice for ejecting the liquid, the first thin plate, the second thin plate, and a housing for housing the orifice plate. Then, the second thin plate is placed at an arbitrary position between the three or more first thin plates and overlapped, and the orifice plate is further overlapped so that the flow path and the vortex described above are overlapped. A liquid introducing portion for the liquid described above is formed to be connected to the chamber and the inlet.

  According to this mist nozzle, the above-mentioned second thin plate is arranged and overlapped at an arbitrary position between three or more first thin plates, so that the mist injection angle and / or the main characteristic of the mist nozzle is achieved. Flexibility with respect to the injection amount can be obtained at low cost. Specifically, first, since the cross-sectional area of the flow path can be changed by adjusting the number of the first thin plates from the second thin plate to the orifice plate, without changing the design or processing of the member itself, The mist injection angle and / or injection amount can be varied. Further, a simple structure in which one first thin plate has only three kinds of holes constituting a liquid vortex chamber, a liquid flow path, and an introduction port for introducing liquid into the flow path is employed. Yes. Furthermore, the second thin plate is also a simple work piece in which the aforementioned inlet is formed. Therefore, the manufacturing cost can be reduced as compared with the prior art. In addition, the mechanical strength is further improved by providing a housing that houses the first thin plate, the second thin plate, and the orifice plate.

  Another fire-extinguishing mist nozzle of the present invention forms an opening that forms a vortex chamber in which a liquid swirls, and one or a plurality of flow paths that flow into the vortex chamber in the direction of rotation of the liquid. Three or more first metal thin plates in which an opening and an introduction port for introducing the liquid into the flow channel are formed, the flow channel and a part of the inner wall of the vortex chamber, and the introduction port. And a housing for storing the first metal thin plate and the second metal thin plate so as to be opposed to the bottom surface. Yes. Then, the second metal thin plate is disposed and overlapped at any position between the three or more first metal thin plates, whereby the flow path, the vortex chamber, and the introduction port are overlapped. A liquid introduction portion for the liquid connected to the liquid crystal is formed.

  According to this fire-extinguishing mist nozzle, the above-described second metal thin plate is arranged at an arbitrary position between three or more first metal thin plates and overlapped to thereby inject mist, which is a main characteristic of the mist nozzle. Flexibility with respect to angle and / or injection amount can be obtained at low cost. Specifically, since the cross-sectional area of the flow path can be changed by adjusting the number of the first metal thin plates arranged between the second metal thin plate and the orifice plate, The mist injection angle and / or injection amount can be varied without changing the processing. Further, a simple structure is adopted in which a single first metal thin plate has only three kinds of holes constituting a liquid vortex chamber, a liquid flow path, and an introduction port for introducing liquid into the flow path. The second metal thin plate is also a simple work piece in which a hole corresponding to the introduction port is formed. Therefore, for example, the manufacturing cost can be reduced by processing using a progressive die as compared with the prior art.

  Another fire-extinguishing mist nozzle of the present invention forms an opening that forms a vortex chamber in which a liquid swirls, and one or a plurality of flow paths that flow into the vortex chamber in the direction of rotation of the liquid. Three or more first metal thin plates in which an opening and an introduction port for introducing the liquid to the flow channel are formed, and the same outer shape as the first metal thin plate. The flow channel and the vortex chamber A second metal thin plate that forms a part of the inner wall of the first metal plate and has an inlet for forming the above-described inlet, and an orifice for injecting the liquid on the bottom surface having substantially the same outer shape as the first metal thin plate. And a housing for housing the first metal thin plate and the second metal thin plate so as to face the bottom surface thereof. Then, the second metal thin plate is disposed and overlapped at any position between the three or more first metal thin plates, whereby the flow path, the vortex chamber, and the introduction port are overlapped. A liquid introduction portion for the liquid connected to the liquid crystal is formed.

  According to this fire-extinguishing mist nozzle, the above-described second metal thin plate is arranged at an arbitrary position between three or more first metal thin plates and overlapped to thereby inject mist, which is a main characteristic of the mist nozzle. Flexibility with respect to angle and / or injection amount can be obtained at low cost. Specifically, since the cross-sectional area of the flow path can be changed by adjusting the number of the first metal thin plates arranged between the second metal thin plate and the orifice plate, The mist injection angle and / or injection amount can be varied without changing the processing. Further, a simple structure is adopted in which a single first metal thin plate has only three kinds of holes constituting a liquid vortex chamber, a liquid flow path, and an introduction port for introducing liquid into the flow path. The second metal thin plate is also a simple work piece in which a hole corresponding to the introduction port is formed. Furthermore, since the first metal thin plate and the second metal thin plate have the same outer shape, and the thin plate and the bottom surface of the housing have substantially the same outer shape, for example, processing using a progressive die is easier. Thus, the manufacturing cost can be reduced.

  Another fire-extinguishing mist nozzle of the present invention forms an opening that forms a vortex chamber in which a liquid swirls, and one or a plurality of flow paths that flow into the vortex chamber in the direction of rotation of the liquid. At least one first thin plate in which an opening and an introduction port for introducing the liquid into the flow path are formed, and the flow path and a part of the inner wall of the vortex chamber are formed and the introduction port is formed. And a second thin plate and an orifice plate having an orifice for ejecting the liquid. In addition, the first thin plate is disposed so as to overlap between the orifice plate and the second thin plate.

  According to this fire-extinguishing mist nozzle, the cross-sectional area of the flow path can be changed by adjusting the number of first thin plates from the second thin plate to the orifice plate or the thickness of the first thin plate. The mist injection angle and / or the injection amount can be changed without changing the machining. Further, a simple structure in which one first thin plate has only three kinds of holes constituting a liquid vortex chamber, a liquid flow path, and an introduction port for introducing liquid into the flow path is employed. Yes. Furthermore, the second thin plate is also a simple work piece in which the aforementioned inlet is formed. Therefore, the manufacturing cost can be reduced as compared with the prior art.

  Another fire-extinguishing mist nozzle of the present invention forms an opening that forms a vortex chamber in which a liquid swirls, and one or a plurality of flow paths that flow into the vortex chamber in the direction of rotation of the liquid. At least one first thin plate in which an opening and an introduction port for introducing the liquid into the flow path are formed, and the flow path and a part of the inner wall of the vortex chamber are formed, and the introduction port is formed. The second thin plate has an orifice for ejecting the liquid on the bottom surface, and a housing for housing the first thin plate and the second thin plate so as to face the bottom surface. In addition, the first thin plate is disposed so as to overlap between the housing and the second thin plate.

  According to this fire-extinguishing mist nozzle, the cross-sectional area of the flow path can be changed by adjusting the number of first thin plates arranged between the second thin plate and the orifice plate or the thickness of the first thin plate. The mist injection angle and / or injection amount can be varied without changing the design and processing of the part itself. Further, a simple structure in which one first thin plate has only three kinds of holes constituting a liquid vortex chamber, a liquid flow path, and an introduction port for introducing liquid into the flow path is employed. The second thin plate is also a simple work piece in which a hole corresponding to the introduction port is formed. Therefore, for example, the manufacturing cost can be reduced by processing using a progressive die as compared with the prior art.

  According to one fire-extinguishing mist nozzle of the present invention, the cross-sectional area of the flow path can be changed by adjusting the number or thickness of the first thin plate from the second thin plate to the orifice plate. The mist injection angle and / or the injection amount can be changed without changing the machining. Further, a simple structure in which one first thin plate has only three kinds of holes constituting a liquid vortex chamber, a liquid flow path, and an introduction port for introducing liquid into the flow path is employed. Yes. Furthermore, the second thin plate is also a simple work piece in which the aforementioned inlet is formed. Therefore, the manufacturing cost can be reduced as compared with the prior art. Further, according to another fire-extinguishing mist nozzle of the present invention, in addition to the same effects as the above-described effects, for example, the manufacturing cost can be reduced by processing using a progressive die as compared with the prior art.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this description, common parts are denoted by common reference symbols throughout the drawings unless otherwise specified. In the drawings, the elements of the present embodiment are not necessarily shown to scale. Moreover, in order to make each drawing easy to see, some reference numerals may be omitted.

<First Embodiment>
FIG. 1 is an exploded view of a fire extinguishing mist nozzle in the present embodiment. 2A is a perspective view of the fire extinguishing mist nozzle of this embodiment observed from the direction A in FIG. 1, and FIG. 2B is a perspective view of the fire extinguishing mist nozzle of the present embodiment observed from the direction B of FIG. is there. FIG. 2C is a plan view of the fire-extinguishing mist nozzle of the present embodiment, and FIG. 2D is a DD cross-sectional view in FIG. 2C. 3A is a plan view of the first thin plate, FIG. 3B is a side view of the first thin plate viewed from the Z direction in FIG. 3A, and FIG. 4 is a plan view of the second thin plate. The side view of the second thin plate is the same as that of the first thin plate, and is therefore omitted.

  As shown in FIGS. 1 to 4, the fire-extinguishing mist nozzle 100 of the present embodiment includes a plurality of first thin plates 13 a and 13 b, a single second thin plate 14, and a bottomed cylindrical housing 10. The wire mesh strainer 15 is accommodated. In addition, an orifice 11 serving as a liquid injection port is formed in the center of the bottom of the housing 10, and the first thin plates 13 a and 13 b, the second thin plate 14, and the strainer 15 that are accommodated are fixed at three locations. A claw portion 12 extends from the side surface of the housing 10. Note that a ring 16 is disposed in contact with the strainer 15 in order to make the fixing by the claw portion 12 easier and more reliable.

  The first thin plates 13a and 13b having a circular outer peripheral shape in which the bottom surface of the housing 10 is the same as or slightly larger than the outer peripheral shape of the first thin plates 13a and 13b have three openings connected from the liquid inlet 17a to the flow path 17b. And one opening that becomes the vortex chamber 17c in which the liquid swirls. The widths of the flow paths 17b, 17b, 17b connected to the vortex chamber 17c are narrowed so that the liquid flows into the vortex chamber 17c in a substantially rotating direction. The second thin plate 14 has the same outer peripheral shape as the first thin plates 13a and 13b, but the formed openings are only the three inlets 17a, 17a and 17a.

  Moreover, the 1st thin plate 13a and the 2nd thin plate 14 each have the dowel projection 18a for positioning at the time of superposing | stacking thin plates. On the other hand, since the first thin plate 13b closest to the housing 10 is provided with the insertion hole 18b for the dowel protrusion, the first thin plate 13b and the inner wall surface of the housing 10 are in contact with each other as shown in FIG. 2D. In the present embodiment, the height of one dowel protrusion 18a is not less than 0.1 mm and not more than 0.2 mm.

  By the way, in this embodiment, the material of the 1st thin plates 13a and 13b and the 2nd thin plate 14 is SUS316. Moreover, the thickness of each thin plate is 0.2 mm, and the diameter of the circle used as the external shape of each thin plate is 9.4 mm. Moreover, although the material of the housing | casing 10 and the ring 16 is also SUS316, each thickness is 0.3 mm. The inner diameter of the housing 10 and the outer diameter of the ring are both 9.4 mm, and the diameter of the orifice 11 formed in a part of the housing 10 is 1.0 mm. The strainer 15 is made of SUS316, and the mesh count is # 120. Moreover, the diameter of the strainer 15 whose outer peripheral shape is circular is also 9.4 mm. Although the diameters of the first thin plates 13a and 13b, the second thin plate 14, and the strainer 15 and the outer diameter of the ring 16 are not particularly limited, from the viewpoint of miniaturization of the nozzle and flexibility of the mist flow rate. It is preferable that it is 5 mm or more and 15 mm or less. The thickness of the strainer 15 is about 0.3 mm, and the mesh count is preferably # 80 or finer than that from the viewpoint of preventing nozzle clogging.

  As shown in FIGS. 1 to 4, one second thin plate 14 is arranged between nine first thin plates 13 a,..., 13 a, 13 b, and reaches the orifice 11 from the second thin plate 14. Up to this point, the first thin plates 13a and 13b are arranged in a stacked state. Here, the region from the second thin plate 14 to the orifice 11 is a control unit 19a for controlling the mist injection angle and / or the injection amount, and the region from the second thin plate 14 to the strainer 15 is the liquid introduction. Part 19b.

  First, in the control part 19a, the mist injection angle and / or the mist injection angle and / or the cross-sectional area of the connecting part between the flow paths 17b, 17b, 17b formed by laminating the first thin plates 13a, 13b and the vortex chamber 17c are determined. Alternatively, it is possible to keep the injection amount within a certain range. In other words, by changing the number of stacked first thin plates 13a, 13b, the depth of each flow path 17b, 17b, 17b changes and the above-mentioned cross-sectional area increases or decreases, so the first thin plates 13a, 13b By adjusting the number of stacked layers, flexibility for the mist injection angle and / or injection amount can be obtained.

  Next, the liquid introduction part 19b is an opening part of the first thin plates 13a, ..., 13a other than the first thin plates 13a, ..., 13a, 13b used in the second thin plate 14 and the control part 19a. It is constituted by. The liquid introduction part 19b has a structure in which the same first thin plates 13a,..., 13a as the part of the control part 19a are stacked, and is used as an introduction part for introducing liquid into the control part 19a. Is done.

  As described above, in the present embodiment, the performance of the control unit 19a and the liquid introduction unit 19b varies depending on the position where the second thin plate 14 is simply arranged. Without changing the processing means, the mist injection angle and / or injection amount can be controlled easily. That is, since the control part 19a and the liquid introduction part 19b are comprised by the common components called the 1st thin plates 13a and 13b and the 2nd thin plate 14, manufacture easy and cost reduction can be implement | achieved. In particular, in the present embodiment, the first thin plates 13a and 13b and the second thin plate 14 are metal thin plates having the same outer peripheral shape, and the difference between them is an opening that becomes the above-described flow paths 17b, 17b and 17b and the vortex chamber 17c. Therefore, it is possible to apply processing using a progressive die. If processing by this progressive die is employed, the position of the second thin plate 14 disposed between the three or more first thin plates 13a, ..., 13a, 13b can be easily and freely changed. Therefore, the yield can be improved by reducing the number of work steps. Furthermore, according to the progressive die, the manufacturing cost can be further reduced due to the manufacturing by a single processing device.

<Second Embodiment>
FIG. 5 is an exploded view of the fire-extinguishing mist nozzle 200 in the present embodiment. FIG. 6 is a cross-sectional view of a portion corresponding to FIG. 2D in the first embodiment. Here, the fire-extinguishing mist nozzle 200 in the present embodiment includes the first thin plates 13a and 13b and the second thin plate 14 used in the first embodiment, but the strainer and the ring are not disposed. Therefore, the claw part 22 extended from the side surface of the housing 20 is bent so as to directly press the first thin plate. The position and size of the orifice 21 are the same as those of the housing 10 of the first embodiment.

  Also in this embodiment, the performance of the control unit 19a and the liquid introduction unit 19b changes depending on the position where the second thin plate 14 is simply arranged. Without changing, the mist injection angle and / or injection amount can be easily controlled. That is, since the control part 19a and the liquid introduction part 19b are comprised by the common components called the 1st thin plates 13a and 13b and the 2nd thin plate 14, manufacture easy and cost reduction can be implement | achieved. In particular, in the present embodiment, the first thin plates 13a and 13b and the second thin plate 14 are metal thin plates having the same outer peripheral shape, and the difference between them is an opening that becomes the above-described flow paths 17b, 17b and 17b and the vortex chamber 17c. Therefore, it is possible to apply processing using a progressive die. If processing by this progressive die is employed, the position of the second thin plate 14 disposed between the three or more first thin plates 13a, ..., 13a, 13b can be easily and freely changed. Therefore, the yield can be improved by reducing the number of work steps. Furthermore, according to the progressive die, the manufacturing cost can be further reduced due to the manufacturing by a single processing device.

  Next, changes in the mist injection angle and the injection amount when the fire extinguishing mist nozzle 100 of the first embodiment is used will be described. Table 1 shows the diameter of the orifice 11, the diameter of the vortex chamber 17c of the first thin plates 13a and 13b (D in FIG. 3A), and the shortest width of the portion where the vortex chamber 17c and the flow paths 17b, 17b and 17b are connected (in FIG. 3A). The result of having measured the position of the 2nd thin plate 14, the injection angle of the mist injected, and the injection quantity after making W) constant is shown. An example of the measurement result is a result when the radiation pressure is 0.9 MPa. Moreover, the dashed-dotted line in FIG. 3A is drawn for convenience, in order to understand the diameter of the vortex chamber 17c. Further, in Table 1, among the nine first thin plates 13a,..., 13a, 13b of the present embodiment, the number of the first thin plates 13a, 13b arranged on the orifice 11 side with respect to the second thin plate 14. Thus, the position of the second thin plate 14 is specified. In the present embodiment, the mist injection angle is an angle θ shown in FIG. The definition of the angle θ is also applied to each embodiment described later. The value of W described above is 0.7 mm.

  As shown in Table 1, it can be seen that the amount of mist injection increases as the number of first thin plates 13a increases. On the other hand, if the number of first thin plates 13a increases as a whole, the mist injection angle tends to decrease, but in a certain range, no change was observed in the injection angle. In other words, in this partial range (the number of first thin plates is 3 to 5), it is indicated that only the injection amount can be increased or decreased without changing the mist injection angle. Thus, the flexibility of the injection amount and / or the injection angle of the mist can be obtained only by changing the position where the second thin plate 14 is arranged.

  Moreover, the same measurement as the Example in the above-mentioned 1st Embodiment was performed also about the mist nozzle 200 for fire extinguishing of 2nd Embodiment. As a result, a value substantially the same as the value obtained in the first embodiment was obtained. That is, if there is no physical impurity in the given liquid, it can be seen that the effect of the present invention can be obtained even if no strainer is arranged.

  By the way, in each above-mentioned embodiment, although the material of the 1st thin plate and the 2nd thin plate was SUS316, a material is not limited to this. For example, as an alternative metal, an aluminum alloy or a copper alloy is applicable. Further, not only metals but also ceramics and plastic materials can be applied by obtaining sufficient hardness by known means. More specifically, for example, in the case of a plastic material, hard vinyl chloride, acrylonitrile / butadiene / styrene (ABS) copolymer synthetic resin, polycarbonate (PC), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), or Those mixtures can be applied. However, since it is used as one part of a mist nozzle for fire extinguishing, heat resistance or fire resistance may be required as compared with other uses. Therefore, from the viewpoint of heat resistance or fire resistance, it is preferable to use hard vinyl chloride, acrylonitrile / butadiene / styrene (ABS) copolymerized synthetic resin or polycarbonate (PC) as a plastic material.

  Moreover, in each above-mentioned embodiment, although the thickness of the 1st thin plate and the 2nd thin plate was 0.2 mm, this invention is not limited to this thickness. However, since it is necessary to increase the swirl speed of the liquid in the vortex chamber 17c in order to generate mist, the vortex is obtained by narrowing the throttle width of the flow path 17b shown in W of FIG. 3A as much as possible. Increasing the flow rate of the liquid flowing into the chamber 17c is an effective means. Therefore, in order to obtain the smallest possible W value (for example, 0.5 mm to 1 mm), it is preferable that the thickness of the above-described thin plate is 0.15 mm or more and 0.7 mm or less from the viewpoint of processing difficulty. On the other hand, if it exceeds 1.5 mm, the processing becomes very difficult. In addition, if it is the above-mentioned preferable range, even if it is a case where a progressive die is employ | adopted, the process will become easy. Further, the diameter of the orifice is not limited to 1.0 mm. When the diameter of the orifice is 0.5 mm, as a general tendency, it has been confirmed that both the mist injection amount and the injection angle are smaller than those when the diameter is 1.0 mm. Therefore, by changing the diameter of the orifice and changing the number of the first thin plate arranged on the orifice side with respect to the second thin plate, the flexibility of the mist injection amount and / or the injection angle can be further increased. Is possible.

  Further, in each of the above-described embodiments, the first thin plates 13a and 13b and the second thin plate 14 are housed in the housings 10 and 20 in which the orifices 11 are formed. good. That is, as in the fire-extinguishing mist nozzle 300 shown in FIG. 8A, an orifice plate 30 made of SUS316 in which the orifice 11 is formed is arranged in place of the casings 10 and 20 used in the above-described embodiments, and the orifice plate 30, the 1st thin plates 13a and 13b, and the 2nd thin plate 14 may be adhere | attached with a well-known adhesive agent. This is because the performance of the control unit 19a and the liquid introduction unit 19b is influenced by the width and shape of the opening such as the vortex chamber and the flow path, but not by the presence or absence of the casing. However, it is preferable that the housings 10 and 20 accommodate the first thin plate and the second thin plate in order to facilitate the manufacture of the fire-fighting mist nozzle and improve the mechanical strength.

  The effect of the present invention can be achieved even with the mist nozzle 400 in which the mist nozzle using the orifice plate 30 shown in FIG. 8A is housed in the housing 40 as shown in FIG. 8B. Rather, it is preferable that at least the orifice plate 30, the first thin plates 13a and 13b, and the second thin plate 14 be housed in the housing 40 from the viewpoint of improving the mechanical strength, as described above. Thereby, the mechanical strength equivalent to the aspect which provided the orifice in housing | casing itself is obtained. Here, the housing 40 is the same as the housing 10 of the first embodiment except that only a part (the region 41 in FIG. 8B) has a bottom. The orifice plate 30 has a circular shape and the diameter is the same as the inner diameter of the housing 40. For convenience, the mist nozzle 400 shown in FIG. 8B is hatched to clearly distinguish the boundary between the bottomed region 41 and the opening at the bottom. The orifice plate 30 can also be formed by using an aluminum alloy, a copper alloy, ceramics, or the plastic material mentioned in the above example, similarly to the first thin plates 13a, 13b or the second thin plate 14.

  Further, in each of the above-described embodiments, the first thin plates 13a and 13b have the three introduction ports 17a, 17a and 17a and the flow paths 17b, 17b and 17b, but the number thereof is limited to three. Not. For example, even if the introduction ports 27a, 27a and the flow paths 27b, 27b are two places like the first thin plate 43 and the second thin plate 44 shown in FIGS. 9A and 9B, the effect of the present invention is achieved in the vortex chamber 27c. A sufficient angular velocity of the liquid to be exhibited can be obtained. Further, as in the first thin plate 53 and the second thin plate 54 shown in FIG. 10A and FIG. 10B, even if the introduction port 37a and the flow path 37b are each in only one place, at least a part of the present invention in the vortex chamber 37c. A sufficient angular velocity of the liquid for exhibiting the effect can be obtained. However, if the number of inlets and channels is too small, there is a possibility that the swirling speed of the liquid in the vortex chamber may vary due to the limitation of processing accuracy, etc. Is 3 or more.

  Moreover, in each above-mentioned embodiment, although the number of the 1st thin plate was nine sheets, it is not limited to this. If there are three or more first thin plates, at least two places where the second thin plate may be arranged are formed, so that it is possible to change the amount and / or the injection angle of the injected mist. Become.

  In addition, even if there is only one first thin plate, at least a part of the effects of the fire-extinguishing mist nozzles of the above-described embodiments can be obtained. Specifically, the second thin plate is sandwiched between the first thin plate and the orifice plate or the housing, in other words, the second thin plate is arranged at a position farthest from the orifice except for the strainer and the ring. Since the introduction port, the flow path, and the vortex chamber are formed by overlapping, mist can be injected. At this time, if the thickness of the first thin plate is changed, it is possible to change the amount of mist to be injected and / or the injection angle depending on the thickness of the first thin plate. Furthermore, if two or more sheets of the first thin plate are placed between the orifice plate or the casing in which the orifice is formed and the second thin plate, the amount of the mist to be ejected by the number of the first thin plates and It becomes possible to change the injection angle.

  11 to 13 show that the second thin plate 14 is arranged at the position farthest from the orifices 11 and 21 except for the strainer 15 and the ring 16, and is overlapped. And an embodiment in which a vortex chamber 17c is formed.

  FIG. 11 shows a fire extinguishing mist nozzle 500 which is another embodiment. The fire-extinguishing mist nozzle 500 is the same as the fire-extinguishing mist nozzle 100 of the first embodiment, in that the number of first thin plates 13a corresponding to the control unit 19a is seven, and the number corresponding to the liquid introduction unit 19b. 1 has the same configuration as the fire extinguishing mist nozzle 100 except that the thin plate 13a is removed.

  In this embodiment, after passing through the strainer 15, the liquid is fed from the inlets 17 a, 17 a, 17 a of the second thin plate 14 to the control unit 19 a. Even in this embodiment, the cross-sectional area of the flow path can be changed by changing the quantity or thickness of the first thin plates 13a and 13b corresponding to the control unit 19a, so that the design and processing of the parts themselves are changed. In addition, the mist injection angle and / or the injection amount can be varied.

  FIG. 12 shows another embodiment of a fire extinguishing mist nozzle 600. The fire-extinguishing mist nozzle 600 includes a point in which the number of first thin plates 13a corresponding to the control unit 19a is 7 in the fire-extinguishing mist nozzle 200 of the second embodiment and a liquid introduction unit 19b. 1 has the same configuration as the fire extinguishing mist nozzle 200 except that the thin plate 13a is removed.

  In this embodiment, the liquid is fed directly from the inlets 17a, 17a, 17a of the second thin plate 14 to the control unit 19a. Even in this embodiment, the cross-sectional area of the flow path can be changed by changing the quantity or thickness of the first thin plates 13a and 13b corresponding to the control unit 19a, so that the design and processing of the parts themselves are changed. In addition, the mist injection angle and / or the injection amount can be varied.

  FIG. 13 shows a fire mist nozzle 700 according to another embodiment. The fire extinguishing mist nozzle 700 is the first thin plate corresponding to the liquid introducing portion 19b, and the number of the first thin plates 13a corresponding to the control portion 19a in the fire extinguishing mist nozzle 300 shown in FIG. 8A is seven. Except for the point 13a is removed, it has the same configuration as the fire-extinguishing mist nozzle 300.

  In this embodiment, after passing through the strainer 15, the liquid is fed from the inlets 17 a, 17 a, 17 a of the second thin plate 14 to the control unit 19 a. Even in this embodiment, the cross-sectional area of the flow path can be changed by changing the quantity or thickness of the first thin plates 13a and 13b corresponding to the control unit 19a, so that the design and processing of the parts themselves are changed. In addition, the mist injection angle and / or the injection amount can be varied.

  As described above, even when the first thin plate 13a corresponding to the liquid introducing portion 19b is removed, the same effects as those of the first embodiment or the second embodiment are obtained. That is, by changing the quantity or thickness of the first thin plates 13a, 13b corresponding to the control unit 19a, it is possible to change the cross-sectional area of the flow path, without changing the design and processing of the parts themselves, The mist injection angle and / or injection amount can be varied. Although not shown in FIGS. 11 to 13, an embodiment in which the first thin plate 13a corresponding to the liquid introducing portion 19b is removed from the fire-extinguishing mist nozzle 400 of FIG. 8B is also a preferable aspect.

  Furthermore, in each of the above-described embodiments, the number of second thin plates is one, but the present invention is not limited to this. If there is at least one second thin plate, it becomes possible to constitute a part of the inner wall of the above-described flow path and vortex chamber. An effect is produced.

  Further, in each of the above-described embodiments, the first thin plate and the second thin plate are fixed by bending the claw portion extending from the side surface of the housing, but the fixing means is not limited to this. For example, means for applying and fixing an adhesive between the thin plates can also be applied.

  Further, in each of the above-described embodiments, the first thin plate 13a provided with the dowel protrusion protrusion 18a and the first thin plate 13b provided with the insertion hole 18b of the dowel protrusion protrusion are used, but the present invention is not limited to this. For example, FIGS. 14A and 14B are cross-sectional views corresponding to the DD cross-sectional view of FIG. 2C in which a part of each of the above embodiments is changed. As shown in the fire extinguishing mist nozzle 800 of FIG. 14A and the fire extinguishing mist nozzle 900 of FIG. 14B, even if all the first thin plates are provided with the dowel projection 18a, at least a part of the effect of the present invention is achieved. The As a result, the effect of reducing the number of parts and the effect of improving the production yield are produced. However, if the distance between the inner wall surface of the casing 10 in which the orifice 11 is formed and the upper ends of the vortex chambers 17c, 27c, and 37c of the first thin plate 13a is too long, it is difficult to control the mist to be injected. Absent. From this viewpoint, the distance between the orifice and the first thin plate 13a is preferably 0.2 mm or less. Further, instead of the first thin plate 13b provided with the insertion hole 18b for the dowel projection in each of the above-described embodiments, the housing 10, 20 or the orifice plate 30 is provided with a recess corresponding to the dowel projection 18a. Even if it exists, the effect similar to this invention is show | played.

  In addition, in each of the above-described embodiments, the outer peripheral shapes of the first thin plate and the second thin plate are circular. However, the flexibility with respect to the mist injection angle and the injection amount depends on the shape of the opening of each thin plate. Therefore, the outer peripheral shape is not particularly limited. As described above, modifications that exist within the scope of the present invention are also included in the claims.

  The present invention is used as a fire-extinguishing mist nozzle capable of dealing with various fire-extinguishing targets.

It is an exploded assembly figure of the mist nozzle for fire extinguishing in one embodiment of the present invention. It is the perspective view which observed the mist nozzle for fire extinguishing in one embodiment of this invention from the A direction of FIG. It is the perspective view which observed the mist nozzle for fire extinguishing in one embodiment of this invention from the B direction of FIG. It is a top view of the mist nozzle for fire extinguishing in one embodiment of the present invention. It is DD sectional drawing of FIG. 2C. It is a top view of the 1st thin plate of the mist nozzle for fire extinguishing in one embodiment of this invention. It is a side view of the 1st thin plate of the mist nozzle for fire extinguishing in one embodiment of this invention. It is a top view of the 2nd thin plate of the mist nozzle for fire extinguishing in one embodiment of the present invention. It is an exploded assembly figure of the mist nozzle for fire extinguishing in other embodiment of this invention. It is sectional drawing of the mist nozzle for fire extinguishing in other embodiment of this invention. It is a figure explaining the ejection angle of mist. It is an exploded assembly figure of the mist nozzle for fire extinguishing in other embodiment of this invention. It is an exploded assembly figure of the mist nozzle for fire extinguishing in other embodiment of this invention. It is a top view of the 1st thin plate of the mist nozzle for fire extinguishing in other embodiment of this invention. It is a top view of the 2nd thin plate of the mist nozzle for fire extinguishing in other embodiment of this invention. It is a top view of the 1st thin plate of the mist nozzle for fire extinguishing in other embodiment of this invention. It is a top view of the 2nd thin plate of the mist nozzle for fire extinguishing in other embodiment of this invention. It is an exploded assembly figure of the mist nozzle for fire extinguishing in other embodiment of this invention. It is an exploded assembly figure of the mist nozzle for fire extinguishing in other embodiment of this invention. It is an exploded assembly figure of the mist nozzle for fire extinguishing in other embodiment of this invention. It is sectional drawing of the mist nozzle for fire extinguishing in other embodiment of this invention. It is sectional drawing of the mist nozzle for fire extinguishing in other embodiment of this invention.

Explanation of symbols

10, 20, 40 Housing 11, 21 Orifice 12, 22 Claw 13a, 13b, 43, 53 First thin plate 14, 44, 54 Second thin plate 15 Strainer 16 Ring 17a, 27a, 37a Inlet port 17b, 27b, 37b Channel 17c, 27c, 37c Vortex chamber 18a Dowel protrusion 18b Insert hole for dowel protrusion 19a Control unit 19b Liquid inlet 30 Orifice plate 41 Bottomed region 100, 200, 300, 400, 500, 600, 700, 800, 900 Mist nozzle for fire fighting

Claims (9)

An opening that constitutes a vortex chamber in which the liquid swirls, an opening that constitutes one or a plurality of flow channels that flow into the vortex chamber in a substantially rotating direction of the liquid, and guides the liquid to the flow channel. Three or more first thin plates formed with inlets;
A second thin plate that constitutes a part of the inner wall of the flow path and the vortex chamber and in which the inlet is formed;
An orifice plate having an orifice for ejecting the liquid,
The second thin plate is arranged at an arbitrary position between the three or more first thin plates and overlapped, and further, the orifice plate is overlapped to connect to the flow path, the vortex chamber, and the introduction port. A liquid introduction portion for the liquid is formed , and
A fire-extinguishing mist nozzle in which the position of the second thin plate is determined so as to obtain a desired mist injection angle and / or injection amount . An opening that constitutes a vortex chamber in which the liquid swirls, an opening that constitutes one or a plurality of flow channels that flow into the vortex chamber in a substantially rotating direction of the liquid, and guides the liquid to the flow channel. Three or more first thin plates formed with inlets;
A second thin plate that constitutes a part of the inner wall of the flow path and the vortex chamber and in which the inlet is formed;
An orifice plate having an orifice for ejecting the liquid;
A housing for housing the first thin plate, the second thin plate, and the orifice plate;
The second thin plate is arranged at an arbitrary position between the three or more first thin plates and overlapped, and further, the orifice plate is overlapped to connect to the flow path, the vortex chamber, and the introduction port. A liquid introduction portion for the liquid is formed , and
A fire-extinguishing mist nozzle in which the position of the second thin plate is determined so as to obtain a desired mist injection angle and / or injection amount . An opening that constitutes a vortex chamber in which the liquid swirls, an opening that constitutes one or a plurality of flow channels that flow into the vortex chamber in a substantially rotating direction of the liquid, and guides the liquid to the flow channel. Three or more first metal thin plates formed with introduction ports;
A second metal thin plate that forms part of the flow path and the inner wall of the vortex chamber and in which the inlet is formed;
A bottom surface having an orifice for ejecting the liquid, and a housing for housing the first metal thin plate and the second metal thin plate so as to face the bottom surface;
Liquid introduction of the liquid connected to the flow path, the vortex chamber, and the introduction port by arranging the second metal thin plate at an arbitrary position between the three or more first metal thin plates and overlapping them Part is formed , and
A fire-extinguishing mist nozzle in which the position of the second metal sheet is determined so as to obtain a desired mist injection angle and / or injection amount . An opening that constitutes a vortex chamber in which the liquid swirls, an opening that constitutes one or a plurality of flow channels that flow into the vortex chamber in a substantially rotating direction of the liquid, and guides the liquid to the flow channel. Three or more first metal thin plates formed with introduction ports;
A second metal thin plate having the same outer shape as the first metal thin plate, constituting a part of the inner wall of the flow path and the vortex chamber, and having the introduction port formed therein;
A housing for storing the first metal thin plate and the second metal thin plate so as to have an orifice for ejecting the liquid on a bottom surface having substantially the same outer shape as the first metal thin plate; With
Liquid introduction of the liquid connected to the flow path, the vortex chamber, and the introduction port by arranging the second metal thin plate at an arbitrary position between the three or more first metal thin plates and overlapping them Part is formed , and
A fire-extinguishing mist nozzle in which the position of the second metal sheet is determined so as to obtain a desired mist injection angle and / or injection amount . An opening that constitutes a vortex chamber in which the liquid swirls, an opening that constitutes one or a plurality of flow channels that flow into the vortex chamber in a substantially rotating direction of the liquid, and guides the liquid to the flow channel. At least one first thin plate having an inlet formed therein;
A second thin plate that constitutes a part of the inner wall of the flow path and the vortex chamber and in which the inlet is formed;
An orifice plate having an orifice for ejecting the liquid,
The first thin plate is disposed between the orifice plate and the second thin plate , and
A fire-extinguishing mist nozzle in which the position of the second thin plate is determined so as to obtain a desired mist injection angle and / or injection amount . An opening that constitutes a vortex chamber in which the liquid swirls, an opening that constitutes one or a plurality of flow channels that flow into the vortex chamber in a substantially rotating direction of the liquid, and guides the liquid to the flow channel. At least one first thin plate having an inlet formed therein;
A second thin plate that constitutes a part of the inner wall of the flow path and the vortex chamber and in which the inlet is formed;
A bottom surface having an orifice for ejecting the liquid, and a housing for housing the first thin plate and the second thin plate so as to face the bottom surface;
The first thin plate is disposed so as to overlap between the housing and the second thin plate ; and
A fire-extinguishing mist nozzle in which the position of the second thin plate is determined so as to obtain a desired mist injection angle and / or injection amount . A strainer is arranged to cover the liquid introduction part at a position facing the inner wall of the liquid introduction part formed by the second thin plate.
The fire-extinguishing mist nozzle according to any one of claims 1, 2, 5, and 6 . The first metal thin plate and the second metal thin plate further include a dowel protruding protrusion for positioning during superposition.
The fire-extinguishing mist nozzle according to claim 3 or 4 . The thickness of the first thin plate and the second thin plate is 0.15 mm or more and 0.7 mm or less.
The fire-extinguishing mist nozzle according to any one of claims 1, 2, 5, and 6 .

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