EP1935458A1 - Portable high pressure water fire extinguisher - Google Patents

Abstract

The portable or rollable fire extinguishing appliance is provided with at least one externally connectable, pressure-tight, closed additive container (8,9) for a fluid additive, with a switchable valve provided in the region of the spray nozzle, and with a further non-deformable hose which in each case connects an additive container to the valve. The valve has at least one position in which the fluid additive in one of the containers is admixed with the water jet.

Description

The present invention relates to portable fire extinguishers and has a subject to high pressure water extinguishing fire extinguisher subject, which has at least one additional function.

From the prior art which is the preamble of claim 1 forming EP 0 841 078 in which a portable or rollable fire extinguisher comprises a pressure-tight closed water tank and an externally connectable compressed gas cylinder and a connected by means of a rigid hose with the water tank spray nozzle for generating a water jet.

The advantage of this fire extinguisher is that the device is very quickly ready for use by replacing the cylinder and refilling the water tank.

From the DE 102 31 740 It is known to store additives in separate, non-pressurized containers and to dispense one or both additives into the water container by actuating appropriate propellant charges.

Furthermore, from the company IFEX (Impulse Fire Extinguishing Systems) GmbH from Sittensen, Germany, a fire pistol is known, which operates in pulsed mode. There are two pressurized containers are provided, which are separated by rigid tubes gas and water separately driven into the gun, and then there to be expelled together pulsating. This device can also operate according to the manufacturer's information be mixed with an irritant in the water tank, so that with the gun a diluted irritant-water mixture can be ejected. This device, called RC (Riot Control), is intended to enable law enforcement personnel to extinguish fires on the one hand and to tackle interferers on the other hand.

This device has the disadvantage that when using an irritant mixture, all the equipment, starting from the water tank to the gun, is contaminated with this irritant, so that the device as a whole is to be decontaminated before later use. A refilling of the water supply is only possible under secure conditions. In practical use, this leads to the forces used by the device possibly being exposed to the irritant gases during refilling. If the device is prepared for the spraying of irritants, any extinguishing efforts would have to be carried out with the water provided with irritant.

Based on this prior art, the invention is based on the object to improve a device of the type mentioned in such a way that the use of irritants does not lead to contamination of the entire fire extinguishing device.

It is another object of the invention to make the refilling process easier and less suitable for non-skilled workers under conditions of use. It is also an object of the present invention to provide the emergency services during use the choice between extinguishing and use of irritant gas. In this context, another object of the invention is to be able to use also the extinguishing agent use favoring auxiliaries.

Finally, among other things, it is also an object of the invention allow the use of irritants that decompose in a shorter time when added to water, which makes use in a system according to the prior art difficult, time-limited and possibly almost impossible.

This object is achieved according to the invention with the features of claim 1.

The fact that in addition to the rigid tube that connects the spray nozzle to the water tank, also one or preferably two hoses are provided, on the one hand with externally connectable pressure-tight closed additive container for two different fluid additives and on the other hand provided with a switchable nozzle in the region of the spray valve can be connected with such a valve, either the one additive or the other additive or no additive are added to the water jet. Thus, it has the person using the device in the hand, for example, either with the one additive to delete or by adding the other additive container to mix an irritant to the water jet.

Since the additive containers are preferably exchangeable by means of quick couplings, after filling up the water container, for example according to EP 0 841 078 , the device can be quickly made ready for use again. It is advantageously protected by a cover against manipulation from the outside. It is advantageous that the user has the option of the additive on the handle itself. Nevertheless, fewer components of the device are contaminated with the additives as in the prior art.

Further advantageous embodiments are explained in the subclaims.

Fig. 1

eine perspektivische Ansicht des Vorratsbehälters und an diesem montierter Teile gemäss einem Ausführungsbeispiel der Erfindung;

Fig. 2

eine gegenüber der Fig. 1 andere perspektivische Ansicht des Vorratsbehälters und der an diesem montierter Teile ohne Abdeckung;

Fig. 3

eine perspektivische Ansicht einer Werfer-Pistole mit Dosierventil für die Vorrichtung gemäss der Erfindung;

Fig. 4

eine Seitenansicht des Dosierventils für die Werferpistole gemäss der Erfindung;

Fig. 5

eine Draufsicht auf die Einstellscheibe des Dosierventils nach Fig. 4 entlang der Linie V-V;

Fig. 6

eine Draufsicht auf den unteren Abschnitt des Dosierventils nach Fig. 4 entlang der Linie VI-VI;

Fig. 7

eine Querschnitts-Ansicht des Dosierventils nach Fig. 4;

Fig. 8

eine schematische Draufsicht auf den den Vorsorgungsteil umfassenden Teil der Vorrichtung mit einer Schutzabdeckung;

Fig. 9

eine schematische Seitenansicht der Flansch-Umlenkung der Vorrichtung;

Fig. 10

eine schematische Unteransicht der Flansch-Umlenkung gemäss Fig. 9.

The invention will now be described by way of example with reference to the drawings of an embodiment. It is well understood that, although only one embodiment is described, the design of the individual features covered with generic terms is also possible in other ways. and the scope of protection should only become apparent from the appended claims. Show it:

Fig. 1

a perspective view of the reservoir and mounted on this parts according to an embodiment of the invention;

Fig. 2

one opposite the Fig. 1 another perspective view of the reservoir and mounted on this parts without cover;

Fig. 3

a perspective view of a launcher gun with metering valve for the device according to the invention;

Fig. 4

a side view of the metering valve for the launcher gun according to the invention;

Fig. 5

a plan view of the shim of the metering valve after Fig. 4 along the line VV;

Fig. 6

a plan view of the lower portion of the metering valve after Fig. 4 along the line VI-VI;

Fig. 7

a cross-sectional view of the metering valve after Fig. 4 ;

Fig. 8

a schematic plan view of the part of the device comprising the supply part with a protective cover;

Fig. 9

a schematic side view of the flange deflection of the device;

Fig. 10

a schematic bottom view of the flange deflection according to Fig. 9 ,

According to Fig. 1 consists of the portable fire extinguisher according to the invention of a portable water tank 1, which is connected via a advantageously connected to the bottom of dimensionally stable hose with a launcher gun 3.

Advantageously, the water container 1 has a closable with a quick release 4 water filling opening for fast filling of water in the water tank 1. This closure 4 advantageously has a vent valve 5 and also a protection against opening of the container 1 when it is under pressure , Fig. 1 shows the device with a mounted on the water tank 1 first cover 6, from the above only the quick release 4 and the display of a pressure gauge 7 protrude. The cover has side openings through which connections for the compressed gas cylinder 2 and the additive containers 8 and 9 are led out.

The Fig. 2 shows one opposite the Fig. 1 another perspective view of the water tank 1 and the parts mounted on this without the first cover 6. In the upper part of the water tank a quick coupling 10 is provided, via which the water tank 1 with an outside arranged compressed gas cylinder 2 is connectable.

The water tank 1 is designed as a pressure-resistant container and advantageously comprises a capacity of between 10-20 liters of water. Especially with rollable containers, the capacity can also be increased, for example, to 50-100 liters. The compressed gas cylinder 2 may be filled in particular with ordinary air. The pressure in the compressed gas cylinder 2 is preferably at least 200 bar, but may for example also include 300 bar. The compressed gas cylinder 2 has a shut-off valve 11, which is opened only when using the extinguisher, so that the pressurization of the water tank 1 takes place only in the application. Downstream of the shut-off valve 11 is a pressure reducing valve 12, which restricts the then pending in the water tank 1 pressure on the operating pressure, for example, between 10 and 40 bar, but in particular between 25 and 35 bar selectable.

The reference numeral 13, the diversion of the leading from the pressure reducing valve 12 pressure line is referred to in the water tank 1.

In addition to the water tank 1, at least one additive container 8 or 9 is provided. In the in the Fig. 1 or 2 illustrated embodiment, two additive containers 8 and 9 are provided. The filling amount of the additive container 8 and 9 can be selected in particular between 0.2 and 2 liters; the size (= filling quantity) of the containers 8 and 9 can also be different; in the illustrated embodiment, both volumes are the same and are 500 milliliters. The additive containers 8 and 9 are formed, for example, as hollow cylinders, which advantageously extend over the entire height of the water tank, so that the pressure feed line 14 and the additive drain 15 are respectively arranged above and below the water tank 1, which has the advantages resulting from the description.

The additive containers 8 and 9 are then connected in the upper region either via said pressure reducing valve 12 directly to the compressed gas cylinder 2 (not shown in the drawings), so that when opening the valve 11, the corresponding pressure next to the water tank 1 also on the / the additive container (n) 8, 9 rests. In the illustrated embodiment, the additive container 8 or 9 can be connected via a quick coupling 16 or 17 to a bypass 18. The diversions 18 lead directly through the upper bottom of the water tank 1, so that the additive container 8 and 9 when opening the valve 11 are also directly under pressure. The advantage of this embodiment is that an opening of the vent valve 4 directly and the upcoming operating pressure from the additive containers 8 and 9 takes.

At the lower end of the water tank 1, the dimensionally stable tube is led out. This is advantageously done via a correspondingly provided in the bottom of the water tank 1 flange deflection in order to achieve a laminar flow of water in the hose. For this purpose, this deflection should have a sufficient, the hose diameter corresponding cross-section. An advantageous flange deflection in this context is with reference to the FIGS. 9 and 10 explained in more detail. Advantageously, the tube is laterally arranged so that it can be led out both on the right and on the left of the device. This would allow the right-handed hose to be guided to the right of his body and left-handed to the gun 3 on his left-hand side. However, it is also possible that the hose, for example, installed firmly right out and under the device. Advantageously, the hoses are integrated in the backpack frame or pelvic and abdominal belt. By this measure, the user is protected so that it is not vulnerable by the integrated in the Begurtung hoses in a human collection.

At the bottom of the additive container 8 and 9 respectively further pressure-resistant hoses are arranged, which have a smaller diameter. In particular, the diameter of the main water hose can be 8 millimeters, and the diameter of the additive hoses, for example, 1 millimeter.

For reachable throwers, further essential is the diameter of the main water hose. The additive hoses may also be smaller than the main water hose by a factor of 10 or more. Advantageously, the ratio of the tube diameter to each other corresponds to the respective volumes of the containers with the reference numerals 1 to 8 or 1 to 9.

The connection of the additive container 8 or 9 to the associated hoses via the quick couplings 16 and 17 corresponding quick couplings. This allows the quick removal of used or attaching new additive container 8 or 9.

The additive containers 8 and 9 are designed pressure-resistant according to the intended operating pressures, such as the container 1. They advantageously have at their upper end a quick-release 19, which allows a direct filling of the additive container 8 or 9 after opening.

Advantageously, the three hoses are brought together so that there is a hose unit for the user. The three hoses lead to the launcher gun 3. The launcher gun 3 may in particular consist of a commercial launcher gun 3 with trigger 20. Advantageously, it has in the area 21 a support handle, not shown in the drawings for the other hand of the operator. The launcher gun 3, as known from the prior art can have a conversion for full jet spray and another adjustment for a volume reduction of the flow to, for example, 40 or 80 liters per minute.

At the rear, input side end of the gun 3, a metering valve 27 is provided. The metering valve 27 has a hose-side part 23 and a rotor-side flange 24. In the perspective view, two adjustment valves 25 can be seen in the gun-side part 24, in connection with the Fig. 7 will be explained later. On the hose side 23, three hose connections 26, 28 and 29 are shown. It is a central hose connection 26 for the pressure-resistant hose, which is also connected to the water tank 1, and two at the same radial distance from the center of the flange arranged hose connections 28 and 29 for the additive hoses to the additive containers 8 or 9 lead. The hose-side part 23 and also the gun-side flange 24 are rigidly connected to the launcher gun 3.

Between the two sides 23 and 24 of the metering valve, a rotary ring 22 is provided in the illustrated embodiment. By adjusting the rotary ring 22, which has three positions in the illustrated embodiment, either only water in the launcher gun can be transmitted or added water with additive I from container 8, or water with additive II from container 9. It is in the in The embodiment illustrated in the drawings by an example, which is advantageous, but can also be configured in another form. It is essential that either the water from the container 1 or the said water mixed with the additive I or the said water mixed with the additive II occurs through the inlet designated by the reference numeral 30 in the launcher gun 3. The merger of the individual ingredients should be provided only in or adjacent to the gun 3.

The Fig. 5 shows a plan view of the shim of the metering valve 27 after Fig. 4 along the line VV and the Fig. 6 shows a plan view of the lower portion of the metering valve 27 after Fig. 4 along the line VI-VI. Advantageously, the rotary ring 22 is provided with an easy to handle and easy to operate with gloves outer contour 31. The function of the rotary ring 22 is simpler in connection with the Fig. 7 to explain. By the reference numeral 32 four screws are designated, via which the housing is screwed. These screws protrude from the section of the gun-side flange 24 into the space in which the metering valve 27 is arranged. These screws protrude in this space in curved slots 33, so that the rotary ring 22 is rotatable over an angular range. In particular, three positions are provided with a Verrasterung, in particular with a lockable Verrasterung 34, which are realized for example by locking pins, in particular by resilient pressure pins. In the plan view of the rotary ring 22 it can be seen that a through opening 35 is provided which is advantageously round and has a diameter which corresponds to the inflow of the additive hose I or II and the outflow cross-section 36 in the metering valve 22 equivalent.

The tightness with respect to the central flow 26 is achieved by screwing the hose-side part 23 to the rotor-side flange 24. Therefore, in the Fig. 5 and 6 the corresponding central portion of the hose-side part 23 is located.

The tightness with respect to the two sections 23 and 24 of the metering valve 22 is achieved via respective top and bottom of the ring arranged sealing rings 37, which are embedded in corresponding grooves in the metering valve 22. The tightness to the outside is ensured by O-rings 38, which are arranged around the three openings 39, 40, 41.

In the middle position of the metering valve 22, the openings 39 and 41, which are connected to the hoses to the additives I and II, on the solid material of the metering valve 22. When the rotary ring 22 is rotated in one direction, the opening 35 comes in alignment with the one opening 39 and the associated additive can flow through the opening 35 in the drain 36, which is then united in the flange 24 with the central opening 43 and is rapidly distributed by this turbulent introduction in the thrower beam. When the rotary ring 22 is rotated in the other direction, the opening 35 comes in register with the other opening 41 and the associated additive can flow through the opening 35 in another drain 36, which then in the flange 24 with the central opening 43rd is unified and is distributed by this turbulent introduction quickly in the thrower beam.

Out Fig. 6 It can be seen that the opening 40 and the hole 35 in Fig. 5 cover up. This position is the zero position where no additive is added to the water jet. The advantage of this arrangement is that any remaining small residual amounts are flushed by switching irritant-clearing on the zero position and thus the person concerned no longer receives the remainder of the previous additive, here the irritant more when deleting.

The outflow may be a hole provided parallel to the main axis of the thrower, which then passes into the central feed 43 via a radial bore 42. In the radial bore 42, which leads to the edge of the flange 24, a metering valve 25 is inserted, for example screwed with a fine thread. Thus, the supply of the additive by Durchlassminderung adjustable, otherwise the same operating pressure only by cross-sectional resistances to a proportional Output of additive and water would result.

In the illustrated embodiment, two additive containers 8 and 9 of 500 ml each capacity are provided. When the pressure reducing valve 12 is opened, these containers are also in contact with the metering valve 22 at the operating pressure of, for example, between 25 and 35 bar. The additives may be, on the one hand, an irritating gas and, on the other hand, a quenching additive. With a volume selection of 10 liters of water containers 1 and a total of 1 liter of additive in containers 8 and 9, a bar volume of 385 liters is required for an operating pressure of, for example, 35 bar. For a compressed gas cylinder with 2 liter capacity and 200 bar operating pressure, a bar volume of 400 liters is a sufficient dimensioning. The refill closure 4 of the water container preferably comprises the vent valve, so that after opening the pressure reducing valve 12 before use, after use, with or without the use of the launcher gun 3, the pressure can be vented through this vent valve. In this case, not only the pressure in the water tank 1 is reduced but also in the additive containers 8 and 9.

When using the device either only with water or with one of the two additives I or II, after reclosing the pressure reducing valve 12, the compressed gas cylinder 2 can be replaced, the quick release 4 of the water tank 1 are opened and water are refilled. The areas mentioned here are then free from additive residues. Only the area of the launcher-pistol 3, in particular the outlet, is contaminated with the active substance used.

Advantageously, the additive containers 8 and 9 also include a quick-release opening 19 so that they can easily be replaced are fillable. If they are filled with water, the remaining active ingredient can be disposed of in a simple and safe manner via the launcher gun.

The quick couplings 16 and 17 or the corresponding couplings under the water tank 1 are preferably designed differently to allow a defined assignment of the additive container 8 and 9. Then match as possible only color-coded container 8 on the quick coupling 16 and the container 9 can only be connected to the quick connector 17. This also allows for the use of irritant-resistant material in a quick coupling, while providing simpler material for these couplings and the hose system for the additive container intended for extinguishing additives.

Advantageously, a two-part cover according to the device according to Fig. 8 placed. This is shown schematically in this figure by the reference numerals 50 and 51. In each case, this can in each case be a Plexiglas cover. Essential is the protection of the carrier 60 and the device from unintentional manipulation. The covers 50 and 51 may be fastened to the water container 1 either by quick-release fasteners, advantageously the quick-release fasteners are arranged in the region 52 of the backpack of the carrier 60 between the device and the carrier, so that the device can not be manipulated without removing the backpack , On the other hand, the covers 50 and 51 can also be slid on dovetail-like tongue and groove connections on the elongated bottle 1 in the longitudinal direction, and then secured against displacement by a closure in succession. The cover of the main container is in particular by means of a quick release removable for immediate access to cartridge cartridges.

It is understood that the metering valve 22 does not have to be rotationally symmetrical. There are also other embodiments conceivable. Essential is the separate supply of the additive I or II and the water to the launcher gun 3 to make the area of the water tank of the additives substantially free of contamination. In the Fig. 8 the launcher gun 3 can be seen on the right arm 61 of the carrier 60 of the device.

The Fig. 9 shows a schematic side view of the flange deflection of the device and the associated Fig. 10 a schematic bottom view of this flange deflection. An element of the efficiency of the device lies in the achievable injection range, which simplifies the use of additives, since the application directed towards humans over a distance of, for example, greater than 10 meters, an additive effect limiting scattering occurs. It is possible with the use of a flange deflection 70, to achieve a working width of 25 meters.

Of course, this width is also accessible in particular with the portable or rollable fire extinguisher with a pressure-tight closed water tank 1 and an externally connectable compressed gas cylinder 2 and with a connected by means of a rigid hose with the water tank 1 spray nozzle 3 for generating a water jet, if no additives supplied or the device is designed as a pure water dispenser and has no additive container. Even then, the achievement of widths of for example 25 meters with such a portable device is desirable. For this purpose, a flange deflection 70 is provided at the bottom of the water tank 1, at which said dimensionally stable hose is attached.

The flange deflection 70 is advantageously made of a one-piece element made of metal, which consists of an approximately L-shaped tubular element with two arms 71, 72. A first arm 71 of the L's is fastened with a flange 73 on the underside of the water tank 1, in particular in the middle. The central attachment allows optimal drainage of the water contained in the water tank 1.

The second arm 72 of the flange deflection now has a connection 74 for said rigid tube. From the FIGS. 9 and 10 is apparent from the dashed lines to the inner diameter that the free inner diameter 75 of the flange deflection 70, 71, 72 substantially corresponds to the inner diameter of the rigid tube. For example, this diameter is about 12 to 12.7 millimeters (for example, ½ inch). Advantageously, then the radius of curvature of the flange deflection 70, 71, 72 selected so that the height of the flange deflection is less than twice or three times the inner diameter of the rigid tube. Thus, the flange deflection 70 is only about 2 to 8 inches above the lower edge of the water tank 1, so that from the Fig. 1 or 2 recognizable substructure of the device whose overall height can increase only slightly.

The flange deflection implies, as the name implies, that a solid one-piece component is provided, which is best suited for the diversion of the forces occurring during the discharge of water from the container 1. In addition, the deflection allows easy mounting of the rigid tube in the horizontal direction (when using the device with the main axis substantially in the vertical direction), so that this for a light and stable on the floor is turned off and that the rigid hose in train on him not the attachment to the water tank 1 to train but only with a shearing force (additional) charged. Due to the Flanschbauweise with mounting elements, of which the mounting holes 76 can be seen, with appropriate symmetrical arrangement of the same about the vertical axis of symmetry of the water tank, the flange rotated by 90 degrees, so that easily by two ways of use of the rigid tube by 45 degrees twisted can be achieved on both sides of pointing to the user of the device route, which allows a removal of the rigid tube right or left of the user.

Due to the flange deflection with the given by the L-shaped arms 71 and 72 90 degree deflection, the leaking from the water tank 1 water can be deflected without loss of energy in the hose, which remains manageable and controllable by the user even with short bursts of water. Various rigid hoses and in particular their connections to the arm 72 may be provided. With the dashed line 77 in Fig. 10 a hose would be used with, for example, in the arm 72 reaching portion in the similar line 78 in Fig. 9 the tube would be attached outside and the diameter narrowed a little in the longer arm 72. The arm 71 terminates advantageously on shock to the water tank 1 and the inner diameter 79 of the arm 71 advantageously corresponds to the hole diameter in the bottom of the water tank.

LIST OF REFERENCE NUMBERS

1

water tank

2

Pressure cylinder

3

Launcher gun

4

quick release

5

vent valve

6

first cover

7

pressure indicator

8th

additive tank

9

additive tank

10

quick coupling

11

shut-off valve

12

Pressure reducing valve

13

detour

14

pressure supply line

15

additive runoff

16

quick coupling

17

quick coupling

18

detour

19

quick release

20

deduction

21

Area for support handle

22

rotating ring

23

hose side part

24

projector-side flange

25

Adjusting valve

26

central hose connection

27

metering valve

28

hose connection

29

hose connection

30

Inlet in launcher

31

contour

32

pen

33

Long hole

34

locking pins

35

opening

36

Drain section

37

sealing ring

38

sealing ring

39

opening

40

opening

41

opening

42

radial bore

43

central water supply

50

Cover gas bottle

51

Cover additive tank

52

Range of quick-release fasteners

60

Carrier of the device

61

right arm of the wearer

70

Flange deflection

71

first arm, short arm

72

second arm, long arm

73

flange

74

connection

75

Inner diameter of the arm 72

76

mounting hole

77

line

78

line

79

Inner diameter of the arm 71

Claims (13)

Portable or rollable fire extinguisher with a pressure-tight closed water tank (1) and with an externally connectable compressed gas cylinder (2) and with a by means of a rigid hose with the water tank (1) connected to the spray nozzle (3) for generating a water jet, characterized in that Device is further provided with at least one externally connectable pressure-tight closed additive container (8, 9) for a fluid additive, with a provided in the spray nozzle (3) reversible valve (27) and with another rigid tube, each having an additive container (8 , 9) with the switchable valve (27), wherein the valve (27) has at least one position in which the additive in an additive container (8, 9) located fluid additive is admixable with the water jet. Fire extinguisher according to claim 1, characterized in that the additive container (8, 9) with the compressed gas cylinder (2) is connectable. Fire extinguisher according to claim 2, characterized in that the additive container (8, 9) parallel to the water tank (1) with the compressed gas cylinder (2) is connectable, that the water tank (1) by means of a closure cover (4) has closable water filling opening, so that by opening a venting device of the water tank (1) both water tank (1) and additive container (8, 9) are relieved of the operating pressure. Fire extinguisher according to one of claims 1 to 3, characterized in that each additive container (8, 9) with a quick coupling (14, 15, 16, 17) is attachable to the device. Fire extinguisher according to claim 4, characterized in that two additive containers (8, 9) with different quick-release couplings (14, 15, 16, 17) are attachable to the device, so that two different additives are predictable without mutual exchange. Fire extinguisher according to claim 4 or 5, characterized in that each additive container (8, 9) via a lower quick coupling (15, 17) with the further rigid tube and an upper quick coupling (14, 16) with the compressed gas cylinder (2) is connectable , Fire extinguisher according to one of claims 4 to 6, characterized in that the valve (27) has a zero position for dispensing the pure water jet and two positions for dispensing and admixing the respectively in one or the other additive container (8, 9) located fluid additive to the water jet has. Fire extinguisher according to one of claims 1 to 7, characterized in that each additive container (8, 9) has a tenth to a thirtieth of the volume of the water tank (1). Fire extinguisher according to one of Claims 1 to 7, characterized in that the hose system associated with each additive container (8, 9) allows the fluid additive contained in it to be dispensed at the operating pressure in a time which is at most equal to the delivery time of the water from the water container (1 ), so that after emptying the water tank (1) after and during use of the valve (27) associated with the additive container (8, 9) is safe empty. Portable or rollable fire extinguisher according to the preamble of claim 1 or any one of claims 1 to 9, characterized in that a flange deflection (70) is provided, which is fixed to the underside of the water tank (1) and to which said dimensionally stable Hose is attached. Fire extinguisher according to claim 10, characterized in that the flange deflection (70) consists of an approximately L-shaped tubular element (71, 72), wherein a first arm (71) of the L's with a flange (73) on the underside of the water tank (1), in particular in the middle, is attached. Fire extinguisher according to claim 11, characterized in that the second arm (72) of the flange deflection has a connection (74) for said rigid hose. Fire extinguisher according to one of claims 10 to 12, characterized in that the free inner diameter (75) of the flange deflection (70, 71, 72) substantially corresponds to the inner diameter of the rigid hose, for example about 12 to 12.7 millimeters and / or that Radius of curvature of the flange deflection (70, 71, 72) is selected so that the height of the flange deflection is less than twice to three times the inner diameter (75) of the rigid hose.

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