cover

Abstract

To provide a cover applicable to a foam generator.SOLUTION: A cover 1 provided so that it can be fitted to a foam generator 2 includes: a cover part 10 provided breakably; and a break part 11 for breaking the cover part 10. The break part 11 is provided so as to be located between the foam generator 2 and the cover part 10 when the cover part 10 is fitted to the foam generator 2. When foam is discharged from the foam generator 2, the break part 11 is pressed by the foam, so that the cover part 10 is breakable. It is also possible to provide an acute angle part 14 for an outer peripheral part 13 facing the cover part 10 of the break part 11.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cover, and more particularly to a cover that is attachable to a foam generator. [Background technology]

[0002] Conventionally, water-discharging nozzles, such as fire-fighting water spray heads, have been fitted with dust caps as covers to cover the water discharge ports because the accumulation of dust and other debris, grease, and other oils at the nozzles can impede water discharge. These dust caps are designed to be blown off and removed from the nozzle by the force of the fire-fighting water discharged from the nozzle (see, for example, Patent Document 1).

[0003] On the other hand, there are foam generators, typified by foam fire extinguishing equipment, which extinguish fires by releasing and depositing foam in a fire extinguishing compartment. Such foam generators are equipped with a foaming net, and spray a chemical agent, which is a raw material for foam, toward the foaming net to foam the chemical agent and release it as foam (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-36000 A [Patent Document 2] Japanese Patent Application Publication No. 2018-175596 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] If dust and other debris, as well as oil and grease, accumulate on the foaming mesh of a foam generator and clog the mesh, the foaming of the agent and the release of foam will be hindered, and therefore the development of a means to prevent this is desired. At first glance, it may seem that this problem can be solved by attaching a cap similar to that of a water spray head to the foaming mesh, but since the force of the foam is much weaker than the force of the fire-fighting water, it is difficult to blow off the cap with the foam, and therefore it is necessary to take another means to prevent the accumulation of dust and other debris, as well as oil and grease, in the foam generator.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cover that can be applied to a foam generator. [Means for solving the problem]

[0007] The present invention One aspect of is a cover that can be attached to a foam generator, and includes a breakable cover portion and a breakable portion for breaking the cover portion, The cover is provided to prevent dust, oil, and the like from adhering to the foaming mesh of the foam generator, The breaking portion is positioned between the foam generator and the cover portion when the cover is attached to the foam generator, and when foam is released from the foam generator, the breaking portion is pushed by the foam, making it possible to break the cover portion. Another aspect of the present invention is a cover that can be attached to a foam generator, comprising a tearable cover portion and a tearing portion for tearing the cover portion, wherein the tearing portion is positioned between the foam generator and the cover portion when the cover is attached to the foam generator, and has a sharp angle on its outer periphery facing the cover portion, so that when foam is released from the foam generator, the foam pushes against the tearing portion, thereby allowing the cover portion to be broken. Another aspect of the present invention is a cover that can be attached to a foam generator, comprising a tearable cover portion and a tearing portion for tearing the cover portion, wherein the foam generator is equipped with a foaming device and is attached to a duct, the cover portion being formed in a foil shape and arranged so that when the cover is attached to the foam generator, it is directly or indirectly sandwiched between the foaming device and the duct, and the tearing portion is arranged so that when the cover is attached to the foam generator, it is positioned between the foam generator and the cover portion, and when foam is released from the foam generator, the tearing portion is pushed by the foam, making the cover portion tearable.

[0008] still , Book The invention provides a foam generator that is equipped with a foaming device and is attached to a duct, and the cover portion is formed in a foil shape so that when the cover is attached to the foam generator, it is sandwiched directly or indirectly between the foaming device and the duct.

[0009] Furthermore, the present invention may further include a connecting pipe for connecting the foam generator to the duct, and the breaking portion may be provided within the connecting pipe, and the cover portion may be provided so as to be clamped between the connecting pipe and the duct when the cover is attached to the foam generator. [Effects of the Invention]

[0010] In the present invention, the cover comprises a cover portion and a breaking portion, and the breaking portion is positioned between the foam generator and the cover portion when the cover is attached to the foam generator.When foam is released from the foam generator, the foam pushes the breaking portion, making it possible to break the cover portion, thereby providing a cover that can be applied to a foam generator. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is an exploded view of an embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged perspective view of a broken portion in the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of the present invention will be described with reference to Figures 1 and 2. Cover 1 is a dust cover for foam generator 2, and is provided so as to be attachable to foam generator 2. In this embodiment, foam generator 2 is provided at the end of a foam fire extinguishing system that emits foam to smother and extinguish a fire, and the foam fire extinguishing system is, for example, a high-expansion foam fire extinguishing system.

[0013] In this embodiment, the foam generator 2 is fixed to the duct 3 and is installed vertically with the foam outlet equipped with the foaming mesh 22 described later opening approximately vertically downward, but it may also be installed above the machine tool or installed horizontally with the foam outlet opening approximately horizontally.

[0014] The foam generator 2 is equipped with a foaming device 20 for foaming a foam fire extinguishing agent (hereinafter also referred to as agent). The foaming device 20 has a housing 21, a foaming net 22 provided at the tip of the housing 21 for foaming the agent, and a nozzle portion 23 for supplying the agent into the housing 21 and spraying it toward the foaming net 22. In this embodiment, the foaming net 22 of the foam generator 2 is substantially flat, but the shape of the foaming net 22 can be selected appropriately, and it can also be substantially triangular prism-shaped or other shapes.

[0015] The duct 3 has a side pipe 30 that is directly or indirectly connected to the foam generator 2, and in this embodiment, is connected to the foam generator 2 via a connecting pipe 12 of the cover 1, which will be described later. The inner shape of the side pipe 30 has a size and shape that allows the rupture portion 11, which will be described later, to pass through.

[0016] The cover 1 includes a cover portion 10 and a breaking portion 11, and in this embodiment, further includes a connection pipe 12. The cover portion 10 is provided to prevent dust and other debris, oils and grease, etc. from adhering to the foam net 22 from the duct side, and is provided so as to be breakable.

[0017] For example, the cover part 10 is formed in a foil shape, and when the cover 1 is attached to the foam generator 2, it is arranged so as to be sandwiched directly or indirectly between the foamer 20 and the duct 3. In this embodiment, when the cover 1 is attached to the foam generator 2, it is arranged so as to be sandwiched between the connecting pipe 12 and the duct 3 (in this embodiment, its side pipe 30), and is indirectly sandwiched between the foamer 20 and the duct 3.

[0018] The material of the cover portion 10 can be selected appropriately, for example, metal such as aluminum, resin such as vinyl, paper such as Japanese paper, and others can be selected. In particular, by forming the cover portion 10 from metal, it is possible to ensure heat resistance, and it can be used in ducts 3 through which high-temperature gas flows. In this embodiment, the cover portion 10 is formed from aluminum foil.

[0019] The breaking portion 11 is provided to break the cover portion 10, and is positioned between the foam generator 2 and the cover portion 10 when the cover 1 is attached to the foam generator 2, so that when foam is released from the foam generator 2, the foam presses the breaking portion 11, thereby breaking the cover portion 10.

[0020] For example, the breaking portion 11 has an acute angle 14 on its outer periphery 13 facing the cover portion 10 and is provided within the connecting pipe 12. In this embodiment, the breaking portion 11 includes a top plate 15 and a side plate 16 having an acute angle 14 suspended from the side edge of the top plate 15. This ensures that the breaking portion 11 can reliably break the cover portion 10 even if the foam is released from the foam generator 2 at a position offset from the center of the cover 1. The shape of the top plate 15 is not limited to a rectangle but can be selected from polygons such as circles and hexagons, and other shapes as appropriate. In this embodiment, the shape of the top plate 15 is designed to fit the internal shape of the connecting pipe 12, so that the force of the foam pushing against the top plate 15 can be used to break the cover portion 10 without waste. The angle θ of the acute angle 14 can be selected as appropriate, but is preferably set to an angle of 75° or less.

[0021] In this embodiment, the breaking portion 11 is disposed so as to contact the cover portion 10, and is formed of a light material, such as aluminum, so that the cover portion 10 will not break simply because the acute angle portion 14 comes into contact with the cover portion 10. The breaking portion 11 can also be formed of other materials, such as resin.

[0022] The connecting pipe 12 is provided to communicate between the foam generator 2 and the duct 3, and has a breaking portion 11 provided therein. In this embodiment, one end is connected to the foaming device 20 of the foam generator 2, and the other end is connected to the side pipe 30 of the duct 3 in a manner that clamps the cover portion 10. In this embodiment, the connecting pipe 12 is not provided with any special means for holding the breaking portion 11, and the breaking portion 11 is held within the connecting pipe 12 in a state where it is placed on the cover portion 10. It is also possible to provide a separate holding means (not shown) and use this holding means to hold the breaking portion 11 within the connecting pipe 12.

[0023] When the foam is released from the foam generator 2, the foam presses the breaking portion 11, causing the acute angled portion 14 to press against the cover portion 10, and the cover portion 10 is broken by the acute angled portion 14. The foam then causes the breaking portion 11 to pass through the side pipe 30 and drop into the duct 3, connecting the foam generator 2 and the duct 3, and the foam is released into the duct 3. Therefore, the cover 1 of this embodiment is applicable to the foam generator 2.

[0024] The present invention has been described based on the above embodiment, but the present invention is not limited to the above embodiment and can be modified as appropriate within the scope of the invention.

[0025] (1) In the above embodiment, the cover portion 10 is formed in a foil shape, making the cover portion 10 easily breakable. However, a weakened portion (not shown) may be provided in the cover portion 10, and the weakened portion may be broken at the breaking portion 11.

[0026] (2) In the above embodiment, the cover portion 10 is sandwiched between the nozzle portion 23 and the duct 3, but it is also possible to provide the cover portion 10 inside the connecting pipe 12 by, for example, attaching it to the inner surface of the connecting pipe 12.

[0027] (3) In the above embodiment, the foam generator 2 and the connecting pipe 12 are provided separately, but they can also be provided integrally. In this case, the breaking portion 11 is provided inside the housing 21, and the size and shape of the breaking portion 11 are determined to conform to the internal shape of the housing 21.

[0028] (4) The above embodiment has been described using as an example the cover 1 of a foam generator 2 installed at the end of a high-expansion foam fire extinguishing system, but the present invention can be applied to foam generators installed at the end of various foam fire extinguishing systems regardless of the foaming ratio of the foam fire extinguishing agent. [Explanation of symbols]

[0029] 1 cover 10 cover part 11 breaking part 12 connecting pipe 13 outer periphery 14 sharp corner 15 top plate 16 side plate 2 foam generator 20 foaming device 21 Housing 22 Foam mesh 23 Nozzle portion 3 Duct 30 Side pipe θ angle

Claims

1. A cover that can be attached to a foam generator, A breakable cover portion and a breakable portion for breaking the cover portion are provided. The cover is provided to prevent dust, oil, and the like from adhering to the foaming mesh of the foam generator, the breaking portion is provided so as to be positioned between the foam generator and the cover portion when the cover is attached to the foam generator; The cover is characterized in that, when foam is released from the foam generator, the foam presses the breaking portion, thereby making it possible to break the cover portion.

2. A cover that can be attached to a foam generator, The device includes a breakable cover portion and a breakable portion for breaking the cover portion, The breaking portion is provided so as to be positioned between the foam generator and the cover portion when the cover is attached to the foam generator, and has an acute angle portion on an outer periphery facing the cover portion, The cover is characterized in that, when foam is released from the foam generator, the foam presses the breaking portion, thereby making it possible to break the cover portion.

3. A cover that can be attached to a foam generator, A breakable cover portion and a breakable portion for breaking the cover portion are provided. The foam generator includes a foaming device and is attached to a duct; the cover portion is formed in a foil shape and is provided so as to be sandwiched directly or indirectly between the foaming device and the duct when the cover is attached to the foam generator; the breaking portion is provided so as to be positioned between the foam generator and the cover portion when the cover is attached to the foam generator; The cover is characterized in that, when foam is released from the foam generator, the foam presses the breaking portion, thereby making it possible to break the cover portion.

4. The foam generator is equipped with a foaming device and is attached to a duct, The cover according to claim 2, characterized in that the cover portion is formed in a foil shape and is arranged so as to be directly or indirectly sandwiched between the foam generator and the duct when the cover is attached to the foam generator.

5. Further provided is a connecting pipe for communicating the foam generator with the duct, the breaking portion is provided in the connecting pipe, 5. The cover according to claim 3, wherein the cover portion is arranged so as to be sandwiched between the connecting pipe and the duct when the cover is attached to the foam generator.

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