CN112337011A

CN112337011A - High expansion foam fire extinguishing device foam generator

Info

Publication number: CN112337011A
Application number: CN202011073125.9A
Authority: CN
Inventors: 铃木阳介; 坂田典男; 土田武; 太田垣二郎
Original assignee: Kashiwa Co Ltd
Current assignee: Kashiwa Co Ltd
Priority date: 2017-03-01
Filing date: 2018-02-27
Publication date: 2021-02-09
Also published as: JP2018143311A; KR102277897B1; KR20180100478A; CN108525169A; JP6606663B2

Abstract

The invention provides a high expansion foam fire extinguishing device foam generator which simplifies the structure of a foam net, is easy to clean the foam net and overhaul the interior of the foam generator, simplifies the whole structure of equipment and reduces the cost. A foam generator (1) constituting a part of a high expansion foam fire-extinguishing device provided in predetermined sections (S1, S2, S3, S4) is provided with: a flat plate-like foam net (3) attached to the tubular structure (2) in a detachable or openable/closable manner, the tubular structure (2) having a flow path for air supplied to predetermined sections (S1, S2, S3, S4); and an injection nozzle (4) which is disposed inside the tubular structure (2) and injects a foaming agent toward the foam net (3), wherein the foam net (3) is attached so as to cover a front end opening of the rising wall portion (2b), and the rising wall portion (2b) protrudes outward or inward of the tubular structure (2) from a peripheral edge portion of a side wall opening (2a) formed in a side wall of the tubular structure (2).

Description

High expansion foam fire extinguishing device foam generator

The application is a divisional application of patent application with the application date of 2018, 2 and 27, the application number of 201810161254.X and the name of 'foamer'.

Technical Field

The invention relates to a foam generator for a high expansion foam fire extinguishing device.

Background

For example, as a fire extinguishing apparatus installed in a storage space such as a cargo space (cargo hold) of a motor vehicle carrier, a high expansion foam fire extinguishing apparatus is known. The high expansion foam fire extinguishing apparatus discharges a mixed solution (foaming agent) containing a surfactant and/or water (clear water or sea water) from a spray nozzle toward a foaming net, and supplies air introduced from the outside of the ship through a blast duct to the foaming net to generate, for example, bubbles that are about 700 to 1000 times the volume of the mixed solution, and extinguishes fire by a suffocation effect by enclosing a combustion flame with the bubbles.

High expansion foam fire extinguishing device and method using halogen gas and/or CO₂Gas fire extinguishing apparatuses are more excellent than those in a highly safe environment, and therefore are often used for fire extinguishing apparatuses for fires in cargo spaces of ships, equipment rooms, and the like.

As a foam generator used in such a high expansion foam fire extinguishing apparatus, a foam generator having a truncated cone-shaped foam net provided near the front end of a ventilation air duct and protruding toward the cargo space of a ship has been known (see patent document 1). This foam maker is difficult to clean when clogged because the foam net has a complicated shape and a heavy weight and cannot be easily removed. Therefore, in order to prevent such clogging of the foam net, a damper for switching the air flow is provided in front of the foam net, and the air is not flowed on the foam net side during normal ventilation, and is flowed to the foam net only during a fire.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2001-54583

Disclosure of Invention

Technical problem

However, the foam maker disclosed in patent document 1 has a problem that the shape of the foam net is complicated, and the damper is provided, so that the structure of the entire device is complicated, and the cost is increased.

Accordingly, an object of the present invention is to provide a foam maker that simplifies the structure of a foam net, facilitates cleaning of the foam net and inspection of the interior of the foam maker, simplifies the structure of the entire device, and reduces the cost.

Technical scheme

The present invention has been made to solve the above problems, and a foam generator according to the present invention is a foam generator which is installed in a predetermined partition and constitutes a part of a high expansion foam fire-extinguishing device, and includes:

a foam net having a flat plate shape and attached to a tubular structure in a detachable or openable/closable manner, the tubular structure having a flow path for air supplied to the predetermined partition; and

an injection nozzle which is disposed inside the tubular structure and injects a foaming agent toward the foaming web,

the foam net is attached so as to cover a front end opening of an upright wall portion that protrudes from a peripheral edge portion of a side wall opening formed in a side wall of the cylindrical structure toward the outside or inside of the cylindrical structure.

In the foam maker of the present invention, it is preferable that a flange to which the foam net can be attached is provided at a front end opening portion of the upright wall portion.

In the foam maker of the present invention, it is preferable that the foam net is connected to the spray nozzle to form a unit.

In the foam maker of the present invention, it is preferable that the cylindrical structure has a cylindrical shape.

In the foam generator of the present invention, it is preferable that a plurality of the foam nets are attached to the cylindrical structure.

In the foam maker of the present invention, it is preferable that the cylindrical structure is a part of an air blowing duct for ventilation.

The foam generator of the present invention preferably includes a bottomed cylindrical body portion as the cylindrical structure connected to a tip end of the ventilation air supply duct via a flange.

Technical effects

According to the present invention, it is possible to provide a foam maker that simplifies the structure of a foam net, facilitates cleaning of the foam net and inspection of the interior of the foam maker, simplifies the structure of the entire device, and reduces the cost.

Drawings

Fig. 1 is a perspective view showing a state in which a foam generator according to a first embodiment of the present invention is attached to an air blowing duct.

Fig. 2 (a) is a side view showing a state in which the foam maker of fig. 1 is attached to an air blowing duct, and fig. 2 (b) is a side view showing a state in which a conventional foam maker is attached to an air blowing duct.

Fig. 3 is a perspective view showing a second embodiment of the foam maker of the present invention.

Fig. 4 (a) is a side view showing a state in which the foamer of fig. 3 is mounted in an air supply duct in a ship, and fig. 4 (b) is a side view showing a state in which the foamer of fig. 3 is mounted in an air supply duct near the bottom of a ship.

Fig. 5 (a) is a side view showing a state in which the foamer of fig. 3 is mounted in an air supply duct in a ship, and fig. 5 (b) is a side view showing a state in which the foamer of fig. 3 is mounted in an air supply duct near the bottom of a ship.

Fig. 6 is a perspective view showing a third embodiment of the foamer of the present invention.

Fig. 7 (a) is a side view showing a state in which the foam maker of fig. 3 is attached to the air blowing duct, and fig. 7 (b) is a plan view of the foam maker and the air blowing duct of fig. 7 (a).

Description of the symbols

1: foaming device

2: air supply duct (cylindrical structure)

2 a: side wall opening

2 b: rising wall part

2 c: flange

2 d: bottom wall

3: foaming net

3 a: net member

3 b: frame structure

4: spray nozzle

4 a: piping

4 b: jet orifice

4 c: pipe flange

5: bolt

6: frame body

7: support metal member

8: connecting member

11: air supply duct (cylindrical structure)

11 a: side wall opening

11 b: rising wall part

11 c: flange

12: air supply duct (cylindrical structure)

12 a: side wall opening

12 b: rising wall part

12 c: flange

13: air supply duct (cylindrical structure)

13 a: side wall opening

13 b: rising wall part

13 c: flange

14: air supply duct (cylindrical structure)

14 a: side wall opening

14 b: rising wall part

14 c: flange

15: air supply duct (cylindrical structure)

15 a: side wall opening

15 b: rising wall part

15 c: flange

21: foaming device

31: foaming device

32: main body part (cylindrical structure)

32 a: side wall opening

32 b: rising wall part

32c, the ratio of: flange

32 d: bottom wall

32e, and (3): flange

C: central axis

F: air blower

P: supply pipe

S1, S2, S3, S4: partition (predetermined partition)

Detailed Description

Hereinafter, embodiments of the foam maker according to the present invention will be described in detail with reference to the drawings. Fig. 1 shows a state in which a foam generator 1 according to a first embodiment of the present invention is installed in an air blowing duct 2 for ventilation, which will be described later.

Here, the foam generator 1 of the present embodiment constitutes a part of the high expansion foam fire extinguishing apparatus, and can be installed in a predetermined area such as a cargo space of an automobile in an automobile carrying ship, for example. The cargo space in the vehicle carrier is divided into a plurality of stages, and ventilation blowing mechanisms are provided in the sections S1, S2, S3, and S4. Fig. 2 (a) shows a blower F and a cylindrical air duct 2 for ventilating a partition S4 in a cargo space divided into a plurality of stages. By providing the foam generator 1 in the air blowing duct 2, the air blower F and the air blowing duct 2, which are used for ventilation in a normal state, can be used as an air blowing mechanism for the foaming air in the high expansion foam fire extinguishing apparatus when a fire occurs. In the present embodiment, the entire shape of the air blowing duct 2 is described as a cylindrical shape, but the present invention is not limited to this case as long as a flow path for supplying air is formed in a predetermined partition, and for example, the air blowing duct may have a cylindrical shape having a polygonal or elliptical cross section. The air blowing duct 2 is not limited to a cylindrical shape independently provided in the predetermined division, and a part of the air blowing duct 2 may be configured by a component constituting the predetermined division. That is, for example, a partition wall that partitions the cargo space of a vehicle carrier, a side wall or a bottom wall of the hull, or the like may be used to form a part of the air duct 2.

As shown in fig. 1 and 2 (a), the foam generator 1 of the present embodiment includes: a foam net 3 attached to the air supply duct 2 as a cylindrical structure; and a jet nozzle 4 disposed inside the air blowing duct 2 and jetting the foaming agent toward the foaming net 3. In the present invention, the term "tubular structure" includes a structure having a closed end, i.e., a bottomed tubular structure.

A side wall opening 2a having a substantially rectangular shape in front view is formed in a side wall of the air blowing duct 2. The air duct 2 includes a rising wall portion 2b that protrudes outward from the peripheral edge of the side wall opening 2a toward the air duct 2. In the present embodiment, the standing wall portion 2b protrudes in a direction parallel to a perpendicular line extending from the center point of the side wall opening 2a toward the central axis C of the blower duct 2, but the extending angle of the standing wall portion 2b may be appropriately changed without being limited thereto.

The air duct 2 has a flange 2c extending outward from the front end of the upright wall 2b and perpendicular to the upright wall 2 b. The flange 2c is formed in a flat rectangular frame shape. In the present embodiment, the bottom wall 2d that closes the front end opening is provided at the front end of the air blowing duct 2, but the bottom wall 2d may be omitted.

The foam net 3 is a flat plate-like member having a large number of holes formed therein, and is attached to the air blowing duct 2 in a detachable or openable/closable manner. In the present embodiment, as partially enlarged in fig. 1, the foam web 3 includes: a mesh member 3a formed of a metal punched plate having a large number of holes formed therein, and a frame 3b fixed to the peripheral edge of the mesh member 3a by welding or the like. The material and/or thickness of the foaming web 3 is not particularly limited as long as a large number of holes through which the foaming agent ejected from the ejection nozzle 4 passes and foams are formed. In the present embodiment, the foam net 3 is formed in a rectangular shape in front view, but the present invention is not limited thereto, and various shapes can be adopted according to the shapes of the side wall opening 2a and the standing wall portion 2b of the air blowing duct 2 described later.

The foaming net 3 is attached so as to cover the front end opening of the upright wall portion 2b of the air blowing duct 2. The foam net 3 is disposed such that the frame 3b overlaps the flange 2c of the air supply duct 2 and is fixed by the bolts 5, and the bolts 5 are removed to enable easy removal from the air supply duct 2. That is, the foam net 3 is attached to the air blowing duct 2 so as to be attachable to and detachable from the air blowing duct.

The shape, axial position, circumferential position, and number of the sidewall openings 2a formed in the sidewall of the air blowing duct 2 and the corresponding upright wall portions 2b are not particularly limited, and can be appropriately set according to the desired direction and/or amount of foam to be ejected. For example, when the height of each of the sections S1, S2, S3, S4 divided into the cargo space having a multi-layer structure is high, a plurality of side wall openings 2a may be provided in the axial direction of the air blowing duct 2, and the foamed net 3 may be provided in each of the side wall openings 2 a. Further, a plurality of side wall openings 2a may be provided in the circumferential direction of the air blowing duct 2, and for example, the side wall openings 2a may be provided at two opposite positions with respect to the central axis C of the air blowing duct 2. By providing the plurality of side wall openings 2a and attaching the foamer 1 separately in this manner, it is possible to supply the foam for fire extinguishing widely and efficiently. When the side wall opening 2a is large, a plurality of foam nets 3 may be provided in parallel with one side wall opening 2 a. Further, a plurality of side wall openings 2a corresponding to the plurality of divisions S1, S2, S3, S4 may be provided in one air blowing duct 2, and air and bubbles may be supplied to the divisions S1, S2, S3, S4. Further, an opening may be additionally formed in the bottom wall 2d of the air blowing duct 2, and the foam net 3 may be provided so as to cover the opening, and the foam may be supplied from the distal end side.

The injection nozzle 4 is provided in the air blowing duct 2 in a pipe 4a, and injects the foaming agent supplied through the pipe 4a from an injection port 4b at the tip of the injection nozzle 4 toward the inner surface of the foam net 3 in the event of a fire. The pipe 4a extends to the outside through the side wall of the blower duct 2, and is connected to the supply pipe P via a pipe flange 4c provided at the tip end thereof. Although not shown, the supply pipe P is connected to a mixed solution production facility that produces a mixed solution of fire extinguishing liquid and water (foaming agent), a distribution facility (including a tank, a pump, a valve, a meter, and the like) that distributes the foaming agent to a fire extinguishing target location where a fire is occurring, and the like. The plurality of pipes 4a may be provided without particularly limiting the positions of the pipes 4 a. The position of the pipe flange 4c is not particularly limited, and can be set at various positions of the pipe 4 a.

In the example shown in fig. 1, the injection nozzles 4 are provided at four positions, or eight positions in total, in two pipes 4a extending along the central axis C of the blower duct 2. Each of the spray nozzles 4 is arranged to face in a direction perpendicular to the foaming web 3. The number and/or position of the ejection nozzles 4 can be appropriately changed in accordance with the area and/or shape of the foam net 3, and it is preferable that the number and/or position of the ejection nozzles 4 be arranged so that the foaming agent ejected from the ejection ports 4b is uniformly blown over the entire inner surface of the foam net 3.

The operation of the foam maker 1 of the present embodiment will be described below. In a normal state (in the case of non-fire occurrence), the air outside the ship, which is introduced by the blower F shown in fig. 2 (a), is sent out through the blowing duct 2 toward the partition S4 through the foam net 3. Thereby, outside air is supplied to the partition S4 and ventilation is performed.

When fire breaks out in the section S4, the foaming agent is injected from the injection ports 4b of the injection nozzles 4 disposed inside the air blowing duct 2 toward the inner surface of the foam net 3. At this time, as in the case of ventilation, since the air passing through the blowing duct 2 and the inside of the foamer 1 passes through the foaming mesh 3, the foam is generated by the foaming mesh 3 and is sent to the division area S4, and the fire can be smothered.

Fig. 2 (b) shows a conventional foam maker 1 'having a foam net 3' with a truncated cone shape. A damper unit 13 capable of changing the flow path (air passage) of air is provided between the foam maker 1 'and the air supply duct 2, and ventilation of the partition S4 is performed through a ventilation port 13a provided in a side surface of the damper unit 13 in a normal state, and the air passage is switched in the damper unit 13 to supply the foam formed by the foam maker 1' to the partition S4 in the event of a fire. In the case of the conventional structure shown in fig. 2 (b), the foam net 3 ' has a complicated shape and a heavy weight, and is difficult to detach, so that it is difficult to clean the inner surface of the foam net 3 ' and to inspect the inside of the foam maker 1 '. Further, the overall structure becomes complicated and large due to the structure of the damper unit 13, the cost increases, and the number of vehicles on which the ship can be mounted decreases.

In contrast, in the foam generator 1 of the present embodiment, the foam net 3 has a simple structure because it is a flat plate. Further, since the foam net can be easily attached to and detached from the air blowing duct 2, even when the foam net 3 is clogged, the inner surface can be easily detached and cleaned, and the decrease in foaming performance and the decrease in ventilation performance can be suppressed. In addition, the foaming net 3 is easy to detach to inspect and clean the interior of the air supply duct 2.

Further, since the structure of the damper unit 13 is not required, the entire structure is simplified, the cost can be reduced, and the space corresponding to the damper unit 13 can be saved. In particular, in a vehicle carrier or the like in which the storage space is divided into a large number of sections, since a plurality of the bubble generators 1 are provided in one ship, it is not necessary to provide a plurality of the damper units 13, and the structure of the whole ship can be simplified and the cost can be greatly reduced.

In the foam maker 1 of the present embodiment, the rising wall portion 2b is provided in the cylindrical air blowing duct 2, and the foam net 3 is attached to the front end of the rising wall portion 2b, so that the flat plate-like foam net 3 can be easily attached to the cylindrical air blowing duct 2. Therefore, compared to the case where the foam net 3 bent along the side surface of the cylindrical air blowing duct 2 is attached, for example, the foam net 3 itself can be made to have a simple structure, and as a result, the foam net 3 can be easily manufactured, and the manufacturing cost can be suppressed to a low level. Further, since the flange 2c is provided, the mounting surface of the foam net 3 becomes flat, and therefore, the mounting work of the foam net 3 is also easy. Further, by providing the flange 2c, the foam net 3 can be attached by performing work from the outside of the air blowing duct 2.

Further, by attaching the foam net 3 to the front end of the upright wall portion 2b, when the air blowing duct 2 is deformed, the upright wall portion 2b alleviates the deformation, and therefore, the load applied to the foam net 3 is reduced. In particular, although stress is likely to concentrate at the corners of the rectangular foamed web 3 as in the present embodiment, the provision of the rising wall portions 2b can reduce stress concentration at the corners, thereby preventing breakage. Therefore, it is not necessary to excessively increase the strength of the foamed web, and the cost can be reduced.

Further, by configuring to attach the foam net 3 to the front end of the upright wall portion 2b, the upright wall portion 2b can suppress the blowing agent injected from the injection nozzle 4 from scattering to the outside of the foam net 3. This can reduce the proportion of the foaming agent that cannot be foamed. As a result, the water retentivity of the foam can be improved, and the fire extinguishing performance can be improved.

Further, since the side wall opening 2a of the air blowing duct 2 can set the height of the partition S4 to the upper limit and set the size in the vertical direction (the axial direction of the air blowing duct 2) to an arbitrary size, a large area can be easily secured as compared with the distal end opening of the air blowing duct 2. Therefore, even if the foam net 3 is not formed into a conventional truncated cone-shaped three-dimensional shape, the foam net 3 can be easily formed into a flat plate-like shape having a sufficient area in which a desired amount of foam is generated.

The area of the foamed web 3 is not particularly limited, but is preferably 1.5m²～2.5m²Within the range of (1). The width of the foamed web 3 is preferably 1000mm to 1500mm, and the height is preferably 1000mm to 2500 mm. The diameter of the air blowing duct 2 is not particularly limited, but is preferably 1000mm to 1500 mm.

In the foam maker 1 of the present embodiment, the extending direction of the injection nozzle 4 is arranged perpendicularly to the inner surface of the foam net 3, and the foaming agent can be injected perpendicularly to the inner surface of the foam net 3, so that the foaming efficiency can be improved.

Further, in the foamer 1 of the present embodiment, air is sent out to the partition S4 through the foaming mesh 3 even during ventilation in a normal state, so that large dust contained in the outside air is filtered by the foaming mesh 3 and hardly flows into the partition S4, and the possibility of damage or contamination of goods such as automobiles stored in the partition S4 by the dust can be reduced.

Although not shown in the drawings, the frame 3b of the foam net 3 may be connected to the flange 2c or the rising wall portion 2b via a hinge so as to be openable and closable with the hinge as a fulcrum. This allows the foam net 3 to be attached to the air blowing duct 2 so as to be openable and closable. In this case, since the inner surface of the foaming net 3 and the inside of the blowing duct 2 including the ejection nozzle 4 are easily inspected and cleaned by opening the foaming net 3, it is possible to prevent a decrease in foaming performance and a decrease in ventilation performance due to clogging of the foaming net 3. In this case, the position of the hinge may be set at any one of the four sides of the foamed web 3.

Other embodiments of the present invention will be described below. The same or corresponding components as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

Fig. 3 shows an independent state before the foam maker 21 of the second embodiment is attached to the air blowing duct 2. The foam generator 21 includes a frame 6 detachably held by the foam net 3. The frame 6 has a larger outer shape than the frame 3b, and is detachably fixed by bolts in a state where the frame 3b is in contact with the front surface of the frame 6. In this example, a support bracket 7 is provided on the lower side of the rectangular frame 6, and the support bracket 7 temporarily supports the frame 3b during attachment and detachment.

The foaming net 3 of the foaming device 21 is connected to the spray nozzle 4 integrally to form a combined unit. Specifically, the frame 6 holding the foam net 3 and the pipe 4a of the spray nozzle 4 are connected by a connecting member 8 made of a long metal member having an L-shaped cross section. In the present embodiment, four coupling members 8 are used, i.e., up, down, left, and right, but the number and positions of the coupling members 8 may be changed as appropriate. The shape of the connecting member 8 is not particularly limited, and is preferably a rod-shaped member (rod-shaped member) having a lighter weight.

The foam maker 21 of the present embodiment can simultaneously attach the foam net 3 and the injection nozzle 4 to the air duct 2 by combining the foam net 3 and the injection nozzle 4 as described above, and can perform the attachment work more efficiently at the site in the ship than attaching the foam net 3 and the injection nozzle 4 to the air duct 2 separately. Further, since the position of the injection nozzle 4 with respect to the foam net 3 can be fixed in advance, the relative position of the foam net 3 and the injection nozzle 4 is not adjusted in a troublesome manner when the air blowing duct 2 is attached. Further, since the size of the pipe 4a is smaller than the front end opening and the side wall opening 2a of the upright wall portion 2b, the combined foamer 21 can be easily inserted into the front end opening and the side wall opening 2a of the upright wall portion 2b from the outside of the air blowing duct 2.

Fig. 4 (a) and 4 (b) are cross-sectional views of the ship in a state where the foamer 21 of the second embodiment is mounted on the

air blowing ducts

11, 12 having different shapes from the air blowing duct 2 of the prior embodiment, respectively. In fig. 4 (a) and 4 (b), the respective airflows in the

blower ducts

11 and 12 are schematically indicated by two-dot chain line arrows. The inside of the

air blowing ducts

11 and 12 forms a flow path of air divided by a partition wall or the like as a structural member of the ship, and the air blowing fan F having the same structure as that shown in fig. 2 (a) is communicated to the predetermined divisions S1 and S2 through the

side wall openings

11a and 12 a.

As shown in fig. 4 (a), the air blowing duct 11 has side wall openings 11a formed at two locations communicating with the partition S1, and has a rising wall portion 11b and a flange 11c projecting from the peripheral edge of the side wall opening 11 a. The foam maker 21 is attached so that the foam net 3 covers the front end opening of the upright wall portion 11 b. By configuring to attach the foam maker 21 to the upright wall portion 11b, the load applied to the foam web 3 can be reduced as in the previous embodiment.

As shown in fig. 4 (b), the air supply duct 12 has side wall openings 11a formed at two locations communicating with the partitions S1 and S2, respectively, and has a rising wall portion 12b and a flange 12c protruding from the peripheral edge of the side wall opening 11 a. The foam maker 21 is attached so that the foam net 3 covers the front end opening of the upright wall portion 12 b. By configuring to attach the foam maker 21 to the upright wall portion 12b, the load applied to the foam net 3 can be reduced.

Fig. 5 (a) and 5 (b) are cross-sectional views of the ship in a state where the foam generator 21 of the second embodiment is attached to the

air blowing ducts

13 and 14, respectively. As shown in fig. 5 (a), the air duct 13 has side wall openings 13a formed at two locations communicating with the partition S1, and a flange 13c is provided at the tip of each of the rising wall portion 13b and the rising wall portion 13b protruding from the peripheral edge of the side wall opening 13a toward the inside of the air duct 13. The foam maker 21 is attached so that the foam net 3 covers the front end opening of the upright wall portion 13 b. By configuring to attach the foam maker 21 to the upright wall portion 13b, the load applied to the foam web 3 can be reduced as in the previous embodiment. Further, since the rising wall portion 13b does not protrude toward the partitioning section S1 side, the load amount when used as a cargo space can be further increased. In the case of the embodiment shown in fig. 5 (a) and 5 (b), when the foam maker 21 is attached, a maintenance hole (opening) for allowing the foam maker 21 to enter is separately provided in the side wall of the

air blowing duct

13, 14, and the foam maker 21 can be provided from the inside via the maintenance hole. In addition, when the size of the foam net 3 is smaller than the

side wall openings

13a and 14a, the foam net 3 can be opened and closed or attached and detached from the outside of the

air blowing ducts

13 and 14, and therefore maintenance such as cleaning of the

air blowing ducts

13 and 14 and the foam net 3 can be easily performed.

As shown in fig. 5 (b), the air blowing duct 14 has side wall openings 14a formed at two locations communicating with the partitions S1 and S2, respectively, and has a rising wall portion 14b and a flange 14c protruding from the peripheral edge of the side wall opening 14a toward the inside of the air blowing duct 14. The foam maker 21 is attached so that the foam net 3 covers the front end opening of the upright wall portion 14 b. By configuring to attach the foam maker 21 to the upright wall portion 14b, the load applied to the foam net 3 can be reduced. Further, since the rising wall portion 14b does not protrude toward the partition portions S1 and S2, the loading amount when used as a cargo space can be further increased.

Fig. 6 shows a foamer 31 of a third embodiment. The foam generator 31 includes a bottomed cylindrical body portion 32 as a cylindrical structure. The body portion 32 is provided with a side wall opening 32a, a standing wall portion 32b, and a flange 32c, as in the side wall opening 2a, the standing wall portion 2b, and the flange 2c provided in the air blowing duct 2 shown in fig. 1. The foaming net 3, the injection nozzle 4, and the like are configured in the same manner as the foamer 1 shown in FIG. 1. One end (lower end in fig. 6) of the body 32 is closed by a bottom wall 32d, and the other end (upper end in fig. 6) is open and provided with a flange 32 e. The flange 32e is fixed to a flange (not shown) provided in the same manner by bolts at a distal end opening of the cylindrical air duct 2, whereby the body portion 32 can be connected to the air duct 2. The foamer 31 is not limited to being attached to the cylindrical air duct 2, and may be attached to an air duct having another shape such as a polygonal cross section.

Fig. 7 (a) is a side view of the state in which the foamer 21 shown in fig. 3 is mounted on the rising wall portion 15b protruding toward the inside of the cylindrical air blowing duct 15, and fig. 7 (b) is a plan view of fig. 7 (a). As shown in fig. 7 (a) and 7 (b), the air blowing duct 15 is provided with a side wall opening 15a, an upright wall portion 15b protruding from the peripheral edge portion of the side wall opening 15a toward the inside of the air blowing duct 15, and a flange 15c at the tip end of the upright wall portion 15 b. The foaming net 3 is attached to cover the front end opening of the upright wall portion 15b, and the foaming unit 21 is attached thereto. By configuring to attach the foam maker 21 to the upright wall portion 15b, the load applied to the foam web 3 can be reduced as in the previous embodiment. Further, since the rising wall 15b does not protrude outside the air blowing duct 15, the space of the predetermined partition can be effectively used. In the case of the embodiment shown in fig. 7 (a) and 7 (b), when the foam maker 21 is attached, a maintenance hole (opening portion) for allowing the foam maker 21 to enter is separately provided in the side wall of the air blowing duct 15, and the foam maker 21 can be provided from the inside via the maintenance hole. Alternatively, a method may be considered in which the air duct 15 is assembled after the air blowing duct 21 is attached to the air blowing duct 21 which is divided into two halves by the air blowing duct 21. In addition, when the size of the foam net 3 is smaller than the side wall opening 15a, the foam net 3 can be opened and closed or attached and detached from the outside of the air blowing duct 15, and therefore maintenance is also easy.

The present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the claims, and for example, the foam generator of the present invention is not limited to an automobile carrier, and can be used for other ships having a vehicle loading area and a rolling area, such as a ferry, a container carrier, a floating structure on the sea, and the like, and can be used for equipment rooms and the like, not limited to a cargo space. Further, a damper unit having a ventilation port may be provided between the main body portion 32 and the air duct 2 in the third embodiment, and the air passage may be switched between normal operation and fire operation.

Claims

1. A foam generator for a high expansion foam fire-extinguishing device, which is provided in a predetermined partition and constitutes a part of the high expansion foam fire-extinguishing device, the foam generator comprising:

a tubular structure having a flow path for sucking air by a blower and supplying the air to the predetermined section;

a blower that blows air to the cylindrical structure; and

a foam generator having a flat plate-like foam net detachably or openably attached to the tubular structure, and an injection nozzle disposed inside the tubular structure and injecting a foam agent toward the foam net in the event of a fire,

the tubular structure includes a rising wall portion that protrudes from a peripheral edge portion of a side wall opening formed in a side wall of the tubular structure toward only one of an outer side and an inner side of the tubular structure,

the axial front end of the cylindrical structure is closed by a bottom wall,

the foam net is attached so as to cover a front end opening of the rising wall portion that protrudes from a peripheral edge portion of a side wall opening formed in a side wall of the tubular structure toward only one of an outer side and an inner side of the tubular structure,

sending out the air sucked by the blower to the predetermined section when the fire is not occurring in the predetermined section,

in the case of a fire in the predetermined section, the air is passed through to generate foam using the foaming agent injected from the injection nozzle, and the foam is sent out to the predetermined section.

2. The high expansion foam fire-extinguishing apparatus foamer of claim 1,

a flange to which the foam net can be attached is provided at a front end opening of the upright wall portion.

3. The high expansion foam fire-extinguishing apparatus foamer of claim 1 or 2,

the foaming net is connected with the spray nozzle to form an assembly.

4. The high expansion foam fire-extinguishing device foamer of any one of claims 1 to 3,

the cylindrical structure is cylindrical.

5. The high expansion foam fire-extinguishing apparatus foamer of claim 1 or 2,

a plurality of the foam nets are attached to the cylindrical structure.

6. The high expansion foam fire-extinguishing apparatus foamer of claim 1 or 2,

the cylindrical structure is a part of an air supply duct for ventilation.

7. The high expansion foam fire-extinguishing apparatus foamer of claim 1 or 2,

the ventilation device is provided with a bottomed cylindrical body portion serving as the cylindrical structure and connected to a tip end of a ventilation air supply duct via a flange.