AUTOMATIC FIRE SELF-EXTINGUISHING DEVICE AND FIRE PROTECTION METHOD

Abstract

Automatic self-extinguishing fire device includes a hose (1), whereby at the ends of the hose (1) an ending (3) closed with a screw (4) is firmly pressed and the ends are equipped by heat shrinking PVC protector. The hose (1) is at least partially transparent so that the inner content of the hose (1) can be seen. The extinguishing substance (2) is colored or it has a space with a gas bubble on its inside and in the bubble it has a floating body, which position in the hose (1) can be observed from the outside. One end of the hose (1) is equipped by pressure valve to fill the hose with extinguishing substance (2). The hose (1) is disrupted by the influence of fire in the most exposed place, a rupture appears which widens into an opening through which the extinguishing substance (2) swiftly leaks into the outside environment, which extinguishes the fire. High reliability and the simplicity of installation are advantages of the device. Device needs no control system or electric power supply for detection of fire.

Claims

1. An automatic self-extinguishing fire device comprising: an extinguishing substance (2), a hose (1) closed on both ends by pressed endings (3), the extinguishing substance (2) is inside the hose (1); at least one of the ending (3) has a closing screw (4); a pressure valve for filling by the extinguishing substance (2) is located on one of the endings of the hose; wherein a sealing or integrity of the hose (1) is disrupted under effects of a fire; wherein the hose (1) is at least partially flexible and the extinguishing substance (2) in the hose (1) is under pressure, the hose (1) is at least partially transparent in order to observe an inner content of the hose (1).

2. The automatic self-extinguishing fire device according to claim 1, wherein the extinguishing substance (2) is colored.

3. The automatic self-extinguishing fire device according to claim 2, wherein the hose has a control surface with a color corresponding to the color of the extinguishing substance (2), as perceived from an outside, on an outer surface of the hose (1).

4. The automatic self-extinguishing fire device according to claim 1, wherein the extinguishing substance (2) is a liquid; inside the hose (1) there is a space with a gas bubble and also a floating body which is adjusted for a movement inside the hose (1).

5. The automatic self-extinguishing fire device according to claim 1, wherein the hose (1) is made from a polyamide.

6. (canceled)

7. The automatic self-extinguishing fire device according to claim 1, wherein at least one of the ending of the hose (1) has a heat-shrinking PVC protector.

8. (canceled)

9. The automatic self-extinguishing fire device according to claim 1, wherein at least one of the ending of the hose (1) includes a mechanical indicator of a pressure of the extinguishing substance (2).

10. The automatic self-extinguishing fire device according to claim 9, wherein mechanical indicator is a pressure sensor connected to an assessment unit.

11. The automatic self-extinguishing fire device according to claim 1, wherein the hose includes a pyrotechnical element for a sudden increase in the pressure inside the hose (1); the hose (1) has at least one place with a weakened cross-section for an outflow of the extinguishing substance (2) during the increase of the pressure caused by the pyrotechnical element.

12. The automatic self-extinguishing fire device according to claim 1, wherein the hose (1) is at least 400 mm long.

13. The automatic self-extinguishing fire device according to claim 1, wherein the hoses has a diameter of at least 18 mm.

14. The automatic self-extinguishing fire device according to claim 1, wherein the hose (1) includes a thermometer on a outer surface; the thermometer includes a thermochromic tinction. wherein hose is directly attached to the protected object; wherein the disruption of the hose (1) takes place in case of the temperature higher than 120° C.

16. (canceled)

17. (canceled)

18. The method of the fire protection of the objects according to claim 15, wherein the hose (1) is attached in an engine space of a transporting device.

19. The method of the fire protection of the objects according to claim 15, wherein the hose (1) is attached inside an electric switchboard.

20. The method of the fire protection of the objects according to claim 15, wherein the hose (1) is attached inside a conveyer for a solid fuel which is delivered by the conveyer to a boiler.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The invention is further disclosed by means of drawings 1 to 3. The used scale of depiction as well as the ratio of individual elements to the length of the hose do not have to correspond to the description in the examples; these size ratios and scales cannot be interpreted as limiting the scope of protection.

[0026] FIG. 1 is a view of the automatic self-extinguishing device which has PVC protectors on its ends.

[0027] FIG. 2 is a hose with the removed protector; in the upper part there is a protector in the partial cross-section, in the lower part the protector is removed.

[0028] FIG. 3 is a detail of the hose with the ending which is pressed on the end of the hose and closed by the screw with a sealing.

EXAMPLES OF REALIZATION

Example 1

[0029] In this example according to FIGS. 1 to 3 the automatic self-extinguishing fire device consists of polyamide hose 1 with a length at least 400 mm. The hose 1 can have such a length that it contains the necessary protected space and/or device. The polyamide hose 1 is partially transparent which allows to check the presence of the colored extinguishing substance 2 in it. On the outer coating of the hose 1 there is a sticker with the colored control surface. The color of this sticker corresponds to the color of the hose 1 as perceived by a naked eye.

[0030] The diameter of the hose in this example is 18 mm. In the hose 1 there is an extinguishing substance 2 under pressure. On one end of the hose there is a tightly pressed ending 3 closed by the screw 4 and whole ending is equipped by heat-shrinking PVC protector. On the other end of the hose 1 hose there is a tightly pressed ending 3 closed by the screw 4 and whole ending is equipped by heat-shrinking PVC protector. These protectors ensure that small injuries related to manipulation with the device are avoided, and that the metal endings 3 do not harm sensitive objects in the vicinity of the mounting of the device. These protectors also indicate the integrity of the ends of the hose 1. One end of the hose 1 is equipped by a pressure valve through which the extinguishing substance 2 is filled. Small manometer with the emergency pressure of the extinguishing substance 2 noted can be connected to the ending 3 in order to control the pressure. Manometer's diameter corresponds to the hose's 1 diameter.

[0031] Automatic self-extinguishing fire device is attached horizontally or vertically or in other direction to the solid parts of the space or device which is to be protected from fire.

[0032] In case of the fire (direct flame) and temperature more than 120° C. the hose 1 cracks up and the extinguishing substance 2 gets to the seat of fire and it extinguishes the fire. The accessory to fire hose 1 is composed of 6 pieces of stretchable PVC straps thanks to which it is anchored at protected device and/or space.

[0033] The softened polyamide wall of the hose 1 cracks up in the places of largest heat stress and it releases the extinguishing substance to the space. This effectively and reliably extinguishes even a budding fire. The extinguishing substance 2 can be solid, liquid or gas substance. The amount of the extinguishing substance 2 can be regulated by the length and diameter of the hose 1. In the early stages the fire produces a heat which increases the pressure in the hose 1 which contributes to sudden punctual disruption of the integrity of the hose 1. The outflowing extinguishing substance 2 has high flow rate and it targets large space.

Example 2

[0034] Automatic self-extinguishing fire device is placed in the engine of the bus. The hose 1 is attached in the vicinity of the device, it encircles its circumference and runs near the fuel pump and fuel filters.

Example 3

[0035] Automatic self-extinguishing fire device is placed in the engine of the passenger car. Grips are pressed on the lower side of the bonnet and the hose 1 clipped into them. During the fire in engine space the bonnet captures the dynamic reaction of the hose 1 and directs the outflow of the extinguishing substance 2 towards the engine.

Example 4

[0036] In this example the automatic self-extinguishing fire device is placed in the electric switchboard of the flat house.

Example 5

[0037] The hose 1 of the automatic self-extinguishing fire device is inserted to the conveyor of the wooden pellets which transports the pellets into the boiler.

INDUSTRIAL APPLICABILITY

[0038] Industrial applicability is obvious. According to this invention it is possible to industrially and repeatedly produce and use automatic self-extinguishing fire device for protection of objects and spaces, for example engines, electric switchboards and so on.

LIST OF RELATED SYMBOLS

[0039] 1—hose [0040] 2—extinguishing substance or medium [0041] 3—ending [0042] 4—screw