KR20180100478A - Discharger - Google Patents

Abstract

Provided is a foam generator including a foam generation mesh with a simplified structure to facilitate cleaning of the foam generation mesh and checkup for the inside of the foam generator, simplify the entire structure of equipment, and reduce costs. According to the present invention, the foam generator (1) forming a part of a high expansion foam fire extinguisher installed in predetermined sections (S1-S4) comprises: a plate-shaped foam generation mesh (3) installed to be able to be attached or opened/closed with respect to a cylindrical structure (2) having a flow path of air supplied to the predetermined sections (S1-S4); and a discharge nozzle (4) disposed inside the cylindrical structure (2) and discharging a foaming agent to the foam generation mesh (3). The foam generation mesh (3) is installed to cover a front end opening part of a vertical wall part (2b) protruding to the outside or inside of the cylindrical structure (2) from the circumferential part of a side wall opening (2a) formed on a side wall of the cylindrical structure (2).

Description

Blowing {DISCHARGER}

The present invention relates to a foamer used in a high expansion foam fire extinguishing system.

For example, a high expansion foam extinguishing device is known as an extinguishing device installed in a storage space such as a cargo space (cargo hold) of a car carrier. The high expansion foam fire extinguishing device is a device for releasing a mixed solution (foaming agent) containing a surfactant or water (fresh water or seawater) from a spinning nozzle toward a foaming mesh and simultaneously blowing air blown from the outside of the vessel through a blowing duct, For example, a foam is foamed at a volume of about 700 to 1,000 times the volume of the mixed solution, and the foam is wrapped with the foam to evolve the fire by the effect of suffocation.

The high expansion foam fire extinguishing device is widely used as a fire extinguishing device for a fire in a cargo space or an engine room of a ship because the fire extinguishing device is superior to an extinguishing device using a halogen gas or a CO ₂ gas because of its high safety and environmental friendliness.

As a foaming machine used in such a high-expansion foam fire extinguishing device, there has been known a foaming machine provided with a frustum-shaped foamed mesh which is provided near the tip of a blowing duct for ventilation and protrudes toward a cargo space of a ship See Document 1). In this foaming machine, since the shape of the foamed mesh is complicated, the weight is heavy, and it can not be easily separated, cleaning is difficult when clogging occurs. Therefore, in order to prevent such clogging of the foamed mesh, a damper for switching the flow of air immediately before the foamed mesh is provided so as to prevent air from flowing to the foamed mesh side during normal ventilation, The air is flowing toward the mesh.

Japanese Patent Application Laid-Open No. 2001-54583

However, in the foaming machine disclosed in Patent Document 1, since the shape of the foamed mesh is complicated and the damper is installed, the structure of the entire equipment becomes complicated and the cost increases. In addition, when the foam mesh is installed in a cargo space of a car carrier There is a problem that the number of vehicles that can be loaded on the ship is reduced due to the size thereof.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a foaming machine in which the structure of the foamed mesh is simplified, the cleaning of the foamed mesh and the inspection inside the foaming machine are facilitated, .

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and a foaming machine of the present invention is a foaming machine constituting a part of a high expansion foam extinguishing device installed in a predetermined section,

A flat plate-like foamed mesh which is detachably or releasably attached to a tubular structure having a flow path of air supplied to the predetermined section,

And a spinning nozzle disposed inside the cylindrical structure for spinning the foaming agent toward the foamed mesh,

The foamed mesh is provided so as to cover the opening of the granular wall portion protruding from the periphery of the side wall opening formed in the side wall of the cylindrical structural body toward the outside or inside of the cylindrical structural body.

Further, in the foaming machine of the present invention, it is preferable that a flange capable of providing the foamed mesh is provided at the open end of the granular wall portion.

In the foaming machine of the present invention, it is preferable that the foamed mesh and the spinning nozzle are connected to form a unit.

In the foaming machine of the present invention, it is preferable that the tubular structure is cylindrical.

In the foaming machine of the present invention, it is preferable that a plurality of the foamed meshes are provided on the cylindrical structural body.

Further, in the foaming machine of the present invention, it is preferable that the tubular structure is a part of a ventilation duct for ventilation.

Further, in the foaming machine of the present invention, it is preferable to provide a cylindrical main body portion having a bottom as the above-described tubular structure body connected to the tip of the ventilation duct through a flange.

According to the present invention, it is possible to simplify the structure of the foamed mesh to facilitate the cleaning of the foamed mesh and the inspection of the inside of the foaming machine, and to provide a foamer that simplifies the entire structure of the apparatus and reduces cost .

1 is a perspective view showing a state in which a bubble generator of a first embodiment of the present invention is installed in a blowing duct;
Fig. 2 (a) is a side view showing a state in which the expanding machine of Fig. 1 is installed in a blowing duct, and Fig. 2 (b) is a side view showing a state in which a conventional expanding machine is installed in a blowing duct.
3 is a perspective view showing a second embodiment of a blowing machine according to the present invention.
Fig. 4 (a) is a side view showing a state in which the expanding machine of Fig. 3 is installed in the inboard air blowing duct, Fig. 4 (b) is a view showing a state in which the expanding machine of Fig. 3 is installed in a blowing duct near the bottom of the ship Fig.
Fig. 5 (a) is a side view showing a state in which the expanding machine of Fig. 3 is installed in the inboard air blowing duct, Fig. 5 (b) is a view showing a state where the expanding machine of Fig. 3 is installed in a blowing duct near the bottom of the ship Fig.
FIG. 6 is a perspective view showing a third embodiment of a blowing machine according to the present invention. FIG.
Fig. 7A is a side view showing a state where the expanding machine of Fig. 3 is installed in a blowing duct, and Fig. 7B is a plan view of a blowing machine and a blowing duct of Fig. 7A.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a blower according to the present invention will be described in detail with reference to the drawings. 1 shows a state in which a blowing device 1 according to a first embodiment of the present invention is installed in a blowing duct 2 for ventilation to be described later.

Here, the blower 1 of the present embodiment constitutes a part of the high-expansion foam fire extinguishing device and can be installed in a predetermined compartment such as a cargo space of a car in a car carrier. The cargo space in the car carrier is divided into multiple layers, and ventilation means for ventilation is provided in each of the sections S1, S2, S3, S4. 2 (a) shows a blower F and a cylindrical blowing duct 2 for ventilating the compartment S4 in the cargo space partitioned into a multi-layered shape. The blower fan F and the blowing duct 2 which are normally used for ventilation are installed in the blowing duct 2 so that the blowing fan 1 and the blowing duct 2 can be used in the high expansion foam fire extinguishing system It can be used as a blowing means for blowing foam air. In the present embodiment, the shape of the blowing duct 2 is described as being cylindrical in shape. However, the shape of the blowing duct 2 is not limited to this as long as it forms a flow passage for supplying air to a predetermined section. For example, It may be a conical tube shape. The blowing duct 2 is not limited to a cylindrical shape which is provided independently in a predetermined section, but may be a structural member constituting a predetermined section and constitute a part of the blowing duct 2. That is, a part of the blowing duct 2 may be constituted by, for example, a partition wall defining a cargo space of a car carrier, a sidewall of a hull, or a bottom wall.

As shown in Figs. 1 and 2A, the blowing machine 1 of the present embodiment includes a foam mesh 3 installed in a blowing duct 2 as a tubular structure, And a spinning nozzle 4 for spinning the foaming agent toward the foaming mesh 3. The spinning nozzle 4 is disposed inside the spinning nozzle 3, Further, in the present invention, the term "cylindrical structure" includes a so-called cylindrical structure having a closed bottom end.

On the side wall of the blowing duct 2, a substantially rectangular side wall opening 2a as viewed from the front is formed. The blowing duct 2 is provided with a rising wall portion 2b protruding from the periphery of the side wall opening 2a toward the outside of the blowing duct 2. The rising wall portion 2b protrudes in a direction parallel to a vertical line extending from the center point of the side wall opening 2a toward the central axis C of the blowing duct 2 in the present embodiment, The extending angle of the rising wall portion 2b can be appropriately changed.

The blowing duct 2 has a flange 2c extending outwardly from the front end of the rising wall portion 2b and extending perpendicularly to the rising wall portion 2b. The flange 2c is formed into a flat rectangular frame shape. In this embodiment, a bottom wall 2d for closing the opening at the front end is provided at the front end of the air blowing duct 2, but the bottom wall 2d may be omitted.

The foamed mesh 3 is a flat plate-like member having a plurality of holes and is detachably attached to the blowing duct 2 or provided so as to be openable and closable. In the present embodiment, the foam mesh 3 includes a mesh member 3a composed of a metal punching plate having a plurality of holes formed therein, as shown in an enlarged part of FIG. 1, And a frame 3b fixed by welding or the like. The material and the thickness of the foamed mesh 3 are not particularly limited as long as a large number of holes for passing the foaming agent radiated from the spinning nozzle 4 to form the foam are formed. In this embodiment, the foamed mesh 3 has a rectangular shape as viewed from the front, but it is not limited thereto. Depending on the shape of the side wall opening 2a and the granular wall portion 2b of the blowing duct 2 to be described later, Various shapes can be adopted.

The foam mesh 3 is provided so as to cover the opening of the leading end of the rising wall portion 2b of the blowing duct 2. The foam mesh 3 is fixed to the flange 2c of the blowing duct 2 with the frame 3b so as to be overlapped with the bolt 5 and is separated from the blowing duct 2 . That is, the foam mesh 3 is detachably attached to the blowing duct 2.

The shapes of the side wall openings 2a formed in the side walls of the air blowing duct 2 and the corresponding rising wall portions 2b are not particularly limited, The discharge direction, the amount of discharge, and the like. For example, when the height of each of the sections S1, S2, S3, and S4 is high in the cargo space partitioned into the multi-layered configuration, a plurality of side wall openings 2a are provided in the axial direction of the blowing duct 2, The foam mesh 3 may be provided in the side wall opening 2a. A plurality of side wall openings 2a may be provided in the circumferential direction of the air blowing duct 2. For example, the side wall openings 2a may be provided at two opposite positions with respect to the center axis C of the blowing duct 2 It may be installed. By providing a plurality of side wall openings 2a and providing each of the blowing apparatuses 1 in this manner, it is possible to efficiently supply the fire extinguishing foam to a wide range. When the sidewall opening 2a is large, a plurality of foam meshes 3 may be arranged side by side with respect to one sidewall opening 2a. It is also possible to provide a plurality of sidewall openings 2a corresponding to the plurality of sections S1, S2, S3 and S4 in one blowing duct 2 and to form each of the sections S1, S2, S3, The air and the foam may be supplied to the outside. An opening may be additionally formed in the bottom wall 2d of the blowing duct 2 and a foam mesh 3 may be provided so as to cover the opening and the foam may be supplied from the front end.

The spinning nozzle 4 is installed in the piping 4a in the blowing duct 2. When the fire occurs, the blowing agent supplied through the pipe 4a is blown into the spinning nozzle 4 To the inner surface of the foam mesh 3. The pipe 4a extends through the side wall of the blowing duct 2 to the outside and is connected to the supply pipe P through a pipe flange 4c provided at the tip of the pipe. The supply piping P is provided with a mixed solution production facility for producing a mixed solution (foaming agent) of a digestive liquid and water (not shown), a distribution facility for distributing the foaming agent to a fire- A measuring device, etc.) or the like. The position of the pipe 4a is not particularly limited, and a plurality of pipes 4a may be provided. Further, the position of the pipe flange 4c is not particularly limited, but can be set at various positions of the pipe 4a.

In the example shown in Fig. 1, spinning nozzles 4 are provided at a total of eight locations, four at each of two pipes 4a extending along the center axis C of the blowing duct 2. Each of the spinning nozzles 4 is arranged in a direction orthogonal to the foam mesh 3. The number and arrangement of the spinning nozzles 4 can be appropriately changed according to the area and shape of the foamed mesh 3 but most preferably the foaming agent radiated from the spinning mouth 4b is applied to the foamed mesh 3 so as to be uniformly blown over the entire inner surface of the casing.

Hereinafter, the operation of the evaporator 1 of the present embodiment will be described. The air outside the vessel blown by the blower F shown in FIG. 2A is blown out through the blowing duct 2 to the foam mesh 3 at a normal time (when no fire has occurred) And is sent toward the division S4. Thereby, outside air is supplied to the compartment S4 and ventilation is performed.

When a fire occurs in the compartment S4, the foaming agent is radiated toward the inner surface of the foamed mesh 3 from the radiation port 4b of each spinning nozzle 4 disposed in the blowing duct 2. At this time, as in the case of ventilation, since the air that has passed through the blowing duct 2 and the vaporizer 1 passes through the foam mesh 3, foam is generated in the foam mesh 3, So that the fire can be suffocated.

Here, Fig. 2 (b) is shown for comparison with a conventional foaming machine 1 'having a truncated cone-shaped foamed mesh 3'. A damper unit 13 is provided between the blowing unit 1 and the blowing duct 2 so as to change the air passage (air passage, air passage). Normally, the damper unit 13 is provided on the side of the damper unit 13 A configuration is adopted in which the compartment S4 is ventilated through the ventilation port 13a and the foam formed in the ventilator 1 'is supplied to the partition S4 by switching the air passage in the damper unit 13 when a fire occurs Respectively. In the case of the conventional structure shown in FIG. 2 (b), since the shape of the foamed mesh 3 'is complicated, heavy, and difficult to separate, the inner surface of the foamed mesh 3' It is difficult to check the inside of the container 1 '. Further, the structure of the damper unit 13 has a complicated structure as a whole, and the size of the damper unit 13 is increased, resulting in an increase in cost and a reduction in the number of vehicles on which a ship can be loaded.

On the other hand, in the evaporator 1 of the present embodiment, the foamed mesh 3 is in the form of a flat plate and has a simple structure. In addition, since the blowing duct 2 can be easily detached from the blowing duct 2, even if clogging of the foamed mesh 3 occurs, the inner surface can be easily separated and cleaned, thereby suppressing the deterioration of the foaming performance and the deterioration of the ventilation performance have. It is also easy to separate the foamed mesh 3 and inspect and clean the inside of the blast duct 2.

Further, since the structure of the damper unit 13 is also unnecessary, the entire structure can be simplified, the cost can be reduced, and at the same time, the space equivalent to the damper unit 13 can be saved. Particularly, in a car carrier or the like in which the containment space is divided into a plurality of compartments, a large number of vapor generators 1 are installed in a single ship, so that a large number of damper units 13 are unnecessary, The structure is remarkably simplified, the cost can be greatly reduced, and the number of vehicles loaded on the ship can be increased by space saving.

In the blowing machine 1 of the present embodiment, the granular wall portion 2b is provided in the cylindrical blowing duct 2 and the foamed mesh 3 is provided at the tip of the granular wall portion 2b It is possible to easily provide a flat plate-like foamed mesh 3 to the cylindrical-shaped blowing duct 2. This makes it possible to make the foamed mesh 3 itself a simple structure as compared with the case where the foamed mesh 3 curved along the side surface of the cylindrical blowing duct 2 is provided, ) Can be easily produced, and the manufacturing cost can be suppressed to a low level. Further, since the mounting surface of the foamed mesh 3 is made flat by providing the flange 2c, the installation work of the foamed mesh 3 is also facilitated. Further, by installing the flange 2c, the foam mesh 3 can be installed only by the operation from the outside of the blowing duct 2.

Since the foam mesh 3 is provided at the tip end of the rising wall portion 2b, even if distortion occurs in the blowing duct 2, this distortion is alleviated by the rising wall portion 2b , The load applied to the foam mesh (3) is reduced. In particular, since the stress is likely to concentrate on the corners of the rectangular foamed mesh 3 as in the present embodiment, the concentration of stress on such corner portions can be reduced and the breakage can be prevented by providing the granular wall portion 2b. Therefore, it is not necessary to excessively increase the strength of the foamed mesh, and the cost can be reduced.

The foam wall 3b is disposed at the tip of the rising wall portion 2b so that the foaming agent emitted from the spinning nozzle 4 is scattered to the outside of the foam mesh 3, . ≪ / RTI > Thereby, the ratio of the foaming agent which does not contribute to foaming can be reduced. As a result, the water retaining property of the foam increases, and the fire extinguishing performance can be improved.

The side wall opening 2a of the blowing duct 2 can set the size of the up and down direction (the axial direction of the blowing duct 2) to an arbitrary size with the height of the partition S4 as the upper limit, It is easy to secure a large area as compared with the opening of the front end of the blast duct 2. Therefore, it is possible to easily form the flat plate-like foamed mesh 3 having an area sufficient for generating a desired amount of foam, without forming the foamed mesh 3 into a three-dimensional shape like a conventional truncated cone shape.

The area of the foamed mesh 3 is not particularly limited, but is preferably in the range of 1.5 m ² to 2.5 m ² . The width of the foamed mesh 3 is preferably 1,000 mm to 1,500 mm, and the height is preferably 1,000 mm to 2,500 mm. The diameter of the air blowing duct 2 is not particularly limited, but is preferably 1,000 mm to 1,500 mm.

In the blowing machine 1 of the present embodiment, by arranging the spinning nozzle 4 so that the extending direction of the spinning nozzle 4 is perpendicular to the inner surface of the foamed mesh 3, a foaming agent is vertically provided on the inner surface of the foamed mesh 3 It is possible to increase the foaming efficiency.

In addition, in the ventilator 1 of the present embodiment, since air is sent out to the partition S4 via the foam mesh 3 even when ventilation is normally performed, relatively large dust contained in the outside air is blown into the foam mesh It is difficult to flow into the compartment S4 and the concern that the cargo such as an automobile contained in the compartment S4 is damaged or contaminated by the dust can be reduced.

Although the illustration is omitted, the frame 3b of the foam mesh 3 may be connected to the flange 2c or the granular wall portion 2b through a hinge, and the hinge may be opened and closed with the hinge serving as a fulcrum. Thereby, the foam mesh 3 can be provided so as to be openable and closable with respect to the blowing duct 2. In this case, since the foam mesh 3 is opened to facilitate inspection and cleaning of the inside of the blowing duct 3 and the blowing duct 2 including the spinning nozzle 4, It is possible to prevent degradation of foaming performance due to clogging and deterioration of ventilation performance. In this case, the position of the hinge may be provided at any position among the four sides of the upper, lower, left, and right sides of the foamed mesh 3.

Hereinafter, another embodiment of the present invention will be described. The same or corresponding components as those of the first embodiment described above are denoted by the same reference numerals, and a description thereof will be omitted.

Fig. 3 shows an independent state before the blower 21 of the second embodiment is installed in the blowing duct 2. Fig. The foaming machine (21) has a frame body (6) for detachably holding the foamed mesh (3). The frame body 6 has a larger outer shape than the frame 3b and can be detachably fixed by a bolt while the frame 3b is in contact with the entire surface of the frame body 6. In this example, a support bracket 7 for temporarily supporting the frame 3b at the time of attaching / detaching is provided on the lower side of the rectangular frame body 6. [

In addition, the foaming machine 21 is formed as a unit in which the foam mesh 3 and the spinning nozzle 4 are integrally connected. Concretely, the frame body 6 holding the foam mesh 3 and the pipe 4a of the spinning nozzle 4 are connected by a connecting member 8 composed of a metal material having a long L-shaped cross section . Although four connecting members 8 are used in this embodiment, the number and position of the connecting members 8 can be appropriately changed. In addition, although the shape of the connecting member 8 is not particularly limited, it is preferable that the connecting member 8 is a rod-shaped member (bar-shaped member) which is more lightweight.

The blowing machine 21 of the present embodiment is constructed by uniting the foam mesh 3 and the spinning nozzle 4 as described above so that the foam mesh 3 and the spinning nozzle 4 are attached to the blowing duct 2, It is possible to perform installation work more efficiently than to install the foam mesh 3 and the spinning nozzle 4 separately in the air blowing duct 2 at the site in the ship. Since the position of the spinning nozzle 4 relative to the foam mesh 3 can be fixed in advance, the relative position of the foam mesh 3 and the spinning nozzle 4 can be adjusted when installed in the blowing duct 2 There is also the advantage that it does not take time. Since the size of the pipe 4a is smaller than the opening of the front end of the rising wall portion 2b and the opening 2a of the side wall 2a, the unitized blower 21 can be moved from the outside of the blowing duct 2, Can be easily inserted into the opening at the front end and the side wall opening 2a of the side wall 2b.

4 (a) and 4 (b) are views showing a state in which the blower 21 of the second embodiment is installed in the blowing ducts 11 and 12 having a shape different from that of the blowing duct 21 of the previous embodiment, Sectional view. In FIGS. 4A and 4B, the respective air flows in the blowing ducts 11 and 12 are indicated by a schematic chain line arrow. The inside of the air blowing ducts 11 and 12 constitute a flow path of the air formed by the partition walls or the like which are structural members of the ship and the air blowing fan F from the air blower F similar to that shown in FIG. 12a through the sections S1, S2.

As shown in Fig. 4 (a), the blowing duct 11 is provided with two side wall openings 11a communicating with the partition S1, and protruding from the periphery of each side wall opening 11a And a flange 11c. A foaming machine 21 is provided so that the foam mesh 3 covers the opening at the front end of the rising wall portion 11b. By providing the foaming machine 21 on the rising wall portion 11b, the load applied to the foamed mesh 3 can be reduced as in the previous embodiment.

As shown in Fig. 4 (b), the blowing duct 12 is provided with two side wall openings 11a communicating with the sections S1 and S2, respectively, and the peripheries of the side wall openings 11a A rising wall portion 12b and a flange 12c are provided. A foaming machine 21 is provided so that the foam mesh 3 covers the opening at the front end of the rising wall portion 12b. The structure in which the foaming machine 21 is provided on the rising wall portion 12b can reduce the load applied to the foamed mesh 3.

5 (a) and 5 (b) are cross-sectional views of the ship in a state in which the blower 21 of the second embodiment is installed in the blowing ducts 13 and 14, respectively. 5A, the blowing duct 13 is provided with two side wall openings 13a communicating with the partition S1, and air is blown from the periphery of each side wall opening 13a A rising wall portion 13b protruding toward the inside of the duct 13 and a flange 13c at the tip end of the rising wall portion 13b. A foaming machine 21 is provided so that the foaming mesh 3 covers the opening at the front end of the rising wall portion 13b. By providing the foaming machine 21 on the rising wall portion 13b, the load applied to the foamed mesh 3 can be reduced as in the previous embodiment. Further, since the rising wall portion 13b does not protrude to the side of the partition S1, it is possible to further increase the load amount in the case of being used as a cargo space. 5 (a) and 5 (b), when the foaming machine 21 is installed, separately from the side walls of the blowing ducts 13 and 14, It is also possible to provide a maintenance hole (opening) and to install the vaporizer 21 from the inside through a maintenance hole. When the size of the foamed mesh 3 is smaller than that of the side wall openings 13a and 14a, the foamed mesh 3 can be opened or closed from the outside of the blowing ducts 13 and 14, Maintenance such as washing of the foamed mesh 13, 14 and the foamed mesh 3 is also easy.

As shown in Fig. 5 (b), the blowing duct 14 is provided with two side wall openings 14a communicating with the sections S1 and S2, respectively, and the peripheries of the side wall openings 14a A rising wall portion 14b projecting toward the inside of the air blowing duct 14 and a flange 14c are provided. A foaming machine 21 is provided so that the foaming mesh 3 covers the opening at the front end of the rising wall portion 14b. The structure in which the foaming machine 21 is provided on the rising wall portion 14b can reduce the load applied to the foamed mesh 3. Further, since the rising wall portion 14b does not protrude to the side of the sections S1, S2, it is possible to further increase the load amount in the case of being used as a cargo space.

Fig. 6 shows a blower 31 of the third embodiment. The foaming machine 31 has a cylindrical main body portion 32 having a bottom as a cylindrical structural body. Like the side wall opening 2a, the rising wall portion 2b and the flange 2c provided in the blowing duct 2 shown in Fig. 1, the side wall opening 32a, the rising wall portion 32b, And a flange 32c is provided. The configurations of the foamed mesh 3 and the spinning nozzle 4 are the same as those of the blowing machine 1 shown in Fig. 6) is closed by a bottom wall 32d, and the other end (the upper end in Fig. 6) is open and a flange 32e is provided . The flange 32e is fixed to the opening at the front end of the cylindrical blower duct 2 by bolts with respect to a flange (not shown) provided in the same manner so that the body 32 can be connected to the blower duct 2 . The blower 31 is not limited to the cylindrical blower duct 2 but may be provided in a blower duct having a different shape such as a polygonal cross section.

7A is a side view of the blowing machine 21 shown in Fig. 3 in a state where the blowing machine 21 is installed on a rising wall portion 15b protruding toward the inside of the cylindrical blowing duct 15, and Fig. 7 b) is a plan view thereof. 7 (a) and 7 (b), the blowing duct 15 is provided with a side wall opening 15a, which extends from the periphery of the side wall opening 15a toward the inside of the blowing duct 15 And a flange 15c is provided at the tip of the granular wall portion 15b. A foaming machine 21 is provided so that the foam mesh 3 covers the opening at the front end of the rising wall portion 15b. The structure in which the granulating wall portion 15b is provided with the foaming machine 21 can reduce the load applied to the foamed mesh 3 as in the previous embodiment. Further, since the rising wall portion 15b does not protrude outside the blast duct 15, the space of the predetermined partition can be effectively used. 7 (a) and 7 (b), when the foaming machine 21 is installed, it is also possible to separately provide the blowing duct 15 for the maintenance use for inserting the foaming machine 21 A hole (opening) may be provided, and a vaporizer 21 may be provided from the inside through a maintenance hole. Alternatively, there is a method in which the blowing fan 21 is first installed with the blowing duct 15 divided, the blowing fan 21 is installed, and then the blowing duct 15 is assembled. Further, when the size of the foam mesh 3 is smaller than that of the side wall opening 15a, since the foam mesh 3 can be opened or removed from the outside of the air blowing duct 15, the maintenance becomes easy.

The present invention is not limited to the above-described embodiments, but can be appropriately changed within the scope of the claims. For example, the bubble generator of the present invention is limited to a car carrier The present invention is not limited to a cargo space and can be used in, for example, an engine room or the like. In addition, the present invention is not limited to a cargo space, It is also possible to do. A damper unit having a ventilation hole may be provided between the main body 32 and the air blowing duct 2 in the third embodiment so that the air passage can be switched between normal and when a fire occurs.

1: Blowing machine
2: Ventilation duct (tubular structure)
2a: side wall opening
2b:
2c: Flange
2d: bottom wall
3: Foam mesh
3a:
3b: frame
4: Spinning nozzle
4a: Piping
4b:
4c: Pipe flange
5: Bolt
6: Frame body
7: Support bracket
8:
11: Ventilation duct (tubular structure)
11a: side wall opening
11b:
11c: Flange
12: Ventilation duct (tubular structure)
12a: side wall opening
12b:
12c: Flange
13: Blast duct (tubular structure)
13a: side wall opening
13b:
13c: Flange
14: Ventilation duct (tubular structure)
14a: side wall opening
14b:
14c: Flange
15: Ventilation duct (tubular structure)
15a: side wall opening
15b:
15c: Flange
21: Blower
31: Blower
32: main body (cylindrical structure)
32a: side wall opening
32b:
32c: Flange
32d: bottom wall
32e: Flange
C: center axis
F: blower
P: Supply piping
S1, S2, S3, and S4: A compartment (a predetermined compartment)

Claims (7)

A foaming machine constituting a part of a high expansion foam fire extinguishing device installed in a predetermined section,
A flat plate-like foamed mesh which is detachably or releasably attached to a tubular structure having a flow path of air supplied to the predetermined section,
And a spinning nozzle disposed inside the cylindrical structure for spinning the foaming agent toward the foamed mesh,
Wherein the foamed mesh is provided so as to cover a distal end opening of a granular wall portion protruding from a periphery of a side wall opening formed in a side wall of the cylindrical structure toward an outer side or an inner side of the cylindrical structural body,
Blowing. The method according to claim 1,
Wherein a flange capable of installing the foamed mesh is provided in a front end opening of the granular wall portion,
Blowing. The method according to claim 1 or 2,
Wherein the foamed mesh and the spinning nozzle are connected and unitized,
Blowing. The method according to any one of claims 1 to 3,
Wherein the tubular structure has a cylindrical shape,
Blowing. The method according to any one of claims 1 to 4,
And a plurality of said foamed meshes are installed in said tubular structure,
Blowing. The method according to any one of claims 1 to 5,
Wherein the tubular structure is a part of a ventilation duct for ventilation,
Blowing. The method according to any one of claims 1 to 5,
And a cylindrical main body portion having a bottom as the cylindrical structural body connected to the tip of the ventilation duct through a flange,
Blowing.

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