JP2012165944A - Fire extinguisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve downsizing of an internal combustion engine by supplying pressurized gas for generating fire extinguishing foam to a mixing apparatus without using an air compressor.SOLUTION: A fire extinguisher is provided which comprises a water supply means 17 which pressurizes and supplies water 16 within a water tank 15 to the mixing apparatus 12 using a water pump 14 driven by the internal combustion engine 11, an agent supply means 25 which pressurizes and supplies a fire extinguishing agent 24 within an agent tank 23 to the mixing apparatus 12 using an agent pump 22 driven by an electric motor 21, and an exhaust gas/compressed air conversion means 26 which converts exhaust gas discharged from the internal combustion engine 11 into compressed air and pressurizes and supplies the converted compressed air to the mixing apparatus 12. The mixing apparatus 12 includes a mixer 27 which mixes water 16 pressurized and supplied from the water supply means 17 and the agent 24 pressurized and supplied from the agent supply means 25, and a foaming apparatus 28 which foams mixed liquid mixed by the mixer 27 and discharges as fire extinguishing foam using the compressed air pressurized and supplied from the exhaust gas/compressed air conversion means 26.

Description

  The present invention relates to a fire extinguishing apparatus using a fire extinguishing foam.

  Compressed air foam system (CAFS) using fire extinguishing foam drives water pump and air compressor by engine mounted on fire engine, supplies water from water pump, and from air compressor By supplying compressed air and supplying compressed air to a mixture of water and fire extinguishing agent, fire extinguishing bubbles are generated and emitted from the nozzle to the fire site (for example, patents) References 1-3).

  Since this CAFS does not require a small amount of water, it is less damaged by water damage than when only water is used and is light in weight so that it can be easily extinguished and has high fire extinguishing power. It became so.

JP 2010-220686A (first page, FIG. 4) JP 2009-285424 A (first page, FIG. 4) Japanese Patent Laying-Open No. 2009-82490 (first page, FIG. 11)

  In conventional CAFS, a water pump and an air compressor are connected to a single engine, so the load on the engine is large. Therefore, a large engine that can output twice the power of an engine that drives only the water pump. Was necessary.

  The present invention has been made in view of the above points, and an object of the present invention is to reduce the size of an internal combustion engine by allowing a pressurized gas for generating a fire extinguishing bubble to be supplied to a mixing device without using an air compressor. .

  The invention according to claim 1 is a fire extinguishing apparatus comprising a mixing device for mixing water, a fire-extinguishing agent, and a foaming gas, and water is pressurized and supplied to the mixing device by a water pump driven by an internal combustion engine. Water supply means for supplying, chemical supply means for pressurizing and supplying a fire-extinguishing chemical to the mixing device, and exhaust gas compressed air for converting the exhaust gas discharged from the internal combustion engine to compressed air and supplying the compressed pressure to the mixing device The mixing device mixes the water supplied under pressure from the water supply means and the medicine supplied under pressure from the medicine supply means, and converts the mixture into the exhaust gas compressed air converter. A fire extinguishing apparatus that foams with compressed air supplied under pressure from means and discharges it as fire extinguishing foam.

  According to a second aspect of the present invention, there is provided a fire extinguishing apparatus comprising a mixing device for mixing water, a fire extinguishing agent, and a foaming gas, and water is pressurized and supplied to the mixing device by a water pump driven by an internal combustion engine. Water supply means for supplying, a chemical supply means for pressurizing and supplying a fire-extinguishing chemical to the mixing device, and an exhaust gas supply means for pressurizing and supplying exhaust gas discharged from the internal combustion engine to the mixing device as compressed air substitute gas The mixing device mixes water supplied under pressure from the water supply means and a medicine supplied under pressure from the medicine supply means, and supplies the mixture under pressure from the exhaust gas supply means. It is a fire extinguisher that foams with the exhausted gas and discharges it as a fire extinguishing foam.

  According to the first aspect of the present invention, although the water pump of the water supply means is driven by the internal combustion engine, the exhaust gas discharged from the internal combustion engine is effectively used to convert the exhaust gas into the exhaust gas compressed air conversion means. Compressed air supplied from the exhaust gas compressed air converting means is converted into compressed air, pressurized and supplied to the mixing device, and mixed with water supplied from the water supply means and chemical supplied from the chemical supply means. Since it is foamed with air and discharged as a fire extinguisher, it is not necessary to drive an air compressor that generates compressed air for foaming by the internal combustion engine, and the internal combustion engine is more than the case where the water pump and air compressor are driven by the internal combustion engine The power required for the fire extinguisher can be halved, and the internal combustion engine of the fire extinguisher that can generate fire extinguishing bubbles can be downsized.

  According to the invention of claim 2, although the water pump of the water supply means is driven by the internal combustion engine, the exhaust gas discharged from the internal combustion engine is effectively used to mix the exhaust gas as a compressed air substitute gas. Since the pressurized liquid is supplied to the apparatus, the mixed liquid obtained by mixing the water supplied from the water supply means and the chemical supplied from the chemical supply means is foamed by the exhaust gas supplied from the exhaust gas supply means and discharged as a fire extinguishing foam. There is no need to drive an air compressor that generates compressed air for foaming by the internal combustion engine, and the power required by the internal combustion engine can be halved compared to the case where the water pump and the air compressor are driven by the internal combustion engine. The internal combustion engine of the fire extinguisher that can generate fire extinguishing bubbles can be downsized.

It is a lineblock diagram showing one embodiment of a fire extinguisher concerning the present invention. It is a block diagram which shows other embodiment of the fire extinguishing apparatus which concerns on this invention.

  Hereinafter, the present invention will be described in detail with reference to one embodiment shown in FIG. 1 and another embodiment shown in FIG.

  First, an embodiment shown in FIG. 1 will be described. A fire-fighting vehicle such as a fire-fighting pump car includes a fire-fighting internal combustion engine (that is, an engine) 11, water, a fire-extinguishing agent, and a foaming gas. A fire extinguishing device 13 having a mixing device 12 for mixing the components is mounted.

  The fire extinguishing device 13 includes a water supply means 17 that pressurizes and supplies water 16 stored in an on-vehicle or off-vehicle water tank 15 to the mixing device 12 by a water pump 14 driven by the internal combustion engine 11, and the internal combustion engine. A medicine supply means 25 for supplying a fire extinguishing medicine 24 stored in a medicine tank 23 mounted on the vehicle or outside the vehicle by a medicine pump 22 driven by an electric motor 21 which is a driving means other than 11 to the mixing device 12; The exhaust gas compressed air conversion means 26 such as a turbocharger that converts the exhaust gas discharged from the internal combustion engine 11 into compressed air and supplies the compressed air to the mixing device 12 is provided.

  The difference between the exhaust gas compressed air conversion means 26 and a general turbocharger is that compressed air is not supplied to the intake port of the internal combustion engine 11, but is supplied to the mixing device 12 under pressure.

  The mixing device 12 was mixed in the mixer 27 for mixing the water 16 pressurized and supplied from the water supply means 17 and the medicine 24 pressurized and supplied from the medicine supply means 25, and the mixer 27. And a foaming device 28 that foams the mixed liquid with compressed air supplied under pressure from the exhaust gas compressed air converting means 26 and discharges the mixture as fire extinguishing foam.

  The mixer 27 and the foamer 28 may be integrated. The foamer 28 also has a function as a buffer tank. A fire hose 29 is connected to the discharge port of the foamer 28, and a fire extinguishing nozzle 30 is connected to the tip of the fire hose 29.

  Then, the water 16 pressurized and supplied from the water supply means 17 and the medicine 24 pressurized and supplied from the medicine supply means 25 are mixed by the mixer 27, and the mixed liquid mixed in the mixer 27, By compressing and supplying air compressed using the energy of the exhaust gas in the exhaust gas compressed air conversion means 26 into the foamer 28, the liquid mixture is foamed in the foamer 28. The discharged fire-extinguishing bubbles are ejected from the fire-extinguishing nozzle 30 toward the fire extinguishing target part through the fire-extinguishing hose 29.

  According to the embodiment shown in FIG. 1, although the water pump 14 of the water supply means 17 is driven by the internal combustion engine 11, the energy of the exhaust gas discharged from the internal combustion engine 11 is effectively used to The compressed air conversion means 26 converts the exhaust gas into compressed air, pressurizes and supplies this compressed air to the foaming device 28 of the mixing device 12, and supplies the water 16 supplied from the water supply means 17 and the chemical supply means 25. The liquid mixture obtained by mixing the medicine 24 with the mixer 27 is foamed by compressed air supplied under pressure from the exhaust gas compressed air conversion means 26 to the foaming device 28, and discharged from the foaming device 28 as a fire extinguishing foam. There is no need to drive an air compressor that generates compressed air for foaming by the engine 11, and the power required by the internal combustion engine 11 is halved compared to the case where the water pump 14 and the air compressor are driven by the internal combustion engine 11. This Can be, the internal combustion engine 11 of the fire extinguishing apparatus 13 capable of generating a fire fighting foam can be miniaturized.

  Next, another embodiment shown in FIG. 2 will be described.

  A fire-fighting vehicle such as a fire-fighting pump vehicle is equipped with a fire-fighting device 13 including a fire-fighting internal combustion engine (that is, an engine) 11 and a mixing device 12 that mixes water, a fire-fighting agent and a foaming gas ing.

  The fire extinguishing device 13 includes a water supply means 17 that pressurizes and supplies water 16 stored in an on-vehicle or off-vehicle water tank 15 to the mixing device 12 by a water pump 14 driven by the internal combustion engine 11, and the internal combustion engine. A medicine supply means 25 for supplying a fire extinguishing medicine 24 stored in a medicine tank 23 mounted on the vehicle or outside the vehicle by a medicine pump 22 driven by an electric motor 21 which is a driving means other than 11 to the mixing device 12; The exhaust gas supply means 31 is provided for supplying the exhaust gas discharged from the internal combustion engine 11 directly or after purification to the mixing device 12 as compressed air substitute gas.

  The mixing device 12 was mixed in the mixer 27 for mixing the water 16 pressurized and supplied from the water supply means 17 and the medicine 24 pressurized and supplied from the medicine supply means 25, and the mixer 27. And a foaming device 28 that foams the mixed liquid by the exhaust gas pressurized and supplied from the exhaust gas supply means 31 and discharges the mixture as a fire extinguishing foam.

  The mixer 27 and the foamer 28 may be integrated. The foamer 28 also has a function as a buffer tank. A fire hose 29 is connected to the discharge port of the foamer 28, and a fire extinguishing nozzle 30 is connected to the tip of the fire hose 29.

  Then, the water 16 pressurized and supplied from the water supply means 17 and the medicine 24 pressurized and supplied from the medicine supply means 25 are mixed by the mixer 27, and the mixed liquid mixed in the mixer 27, By supplying pressurized gas supplied from the internal combustion engine 11 by the exhaust gas supply means 31 as compressed air substitute gas into the foaming device 28, the liquid mixture is foamed in the foaming device 28. The fire extinguishing foam discharged from the vessel 28 is ejected from the fire extinguishing hose 29 toward the fire extinguishing target portion through the fire hose 29.

  According to the embodiment shown in FIG. 2, although the water pump 14 of the water supply means 17 is driven by the internal combustion engine 11, the energy of the exhaust gas discharged from the internal combustion engine 11 is effectively utilized, The exhaust gas is pressurized and supplied to the foaming device 28 of the mixing device 12 as compressed air substitute gas, and the water 16 supplied from the water supply means 17 and the chemical 24 supplied from the chemical supply means 25 are mixed in the mixer 27 Since the liquid is foamed by the exhaust gas pressurized and supplied from the exhaust gas supply means 31 to the foaming device 28 and discharged from the foaming device 28 as a fire extinguishing foam, the internal combustion engine 11 drives an air compressor that generates compressed air for foaming. The internal combustion engine of the fire extinguishing apparatus 13 can reduce the power required by the internal combustion engine 11 and can generate fire extinguishing bubbles, compared to the case where the internal combustion engine 11 drives the water pump 14 and the air compressor. 11 Can be miniaturized.

  The present invention can be used by persons involved in the manufacturing or sales of fire extinguishing devices.

11 Internal combustion engine
12 Mixing equipment
13 Fire extinguisher
14 Water pump
16 water
17 Water supply means
24 drugs
25 Drug supply means
26 Exhaust gas compressed air conversion means
31 Exhaust gas supply means

Claims (2)

In a fire extinguisher equipped with a mixing device that mixes water, a fire extinguishing agent, and a foaming gas,
Water supply means for pressurizing and supplying water to the mixing device by a water pump driven by an internal combustion engine;
A chemical supply means for supplying a chemical for fire extinguishing to the mixing device under pressure,
An exhaust gas compressed air converting means for converting exhaust gas discharged from the internal combustion engine into compressed air and supplying the compressed air to the mixing device;
The mixing device mixes the water supplied under pressure from the water supply means and the medicine supplied under pressure from the medicine supply means, and the mixed liquid is supplied under pressure from the exhaust gas compressed air conversion means. A fire extinguishing apparatus, which is foamed with compressed air and discharged as a fire extinguishing foam. In a fire extinguisher equipped with a mixing device that mixes water, a fire extinguishing agent, and a foaming gas,
Water supply means for pressurizing and supplying water to the mixing device by a water pump driven by an internal combustion engine;
A chemical supply means for supplying a chemical for fire extinguishing to the mixing device under pressure,
Exhaust gas supply means that pressurizes and supplies exhaust gas discharged from the internal combustion engine to the mixing device as compressed air substitute gas,
The mixing device mixes the water supplied under pressure from the water supply means and the medicine supplied under pressure from the medicine supply means, and the mixed liquid is mixed with the exhaust gas supplied under pressure from the exhaust gas supply means. A fire extinguisher that is foamed and discharged as a fire extinguishing foam.

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