JPH10272205A - Sprinkler extinguisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an adjacent sprinkler head from being exposed to aimed water by disposing a water exposure preventing means opening at the time of water aiming of this sprinkler head but closing at the time of water aiming of the adjacent sprinkler in the neighborhood of the sprinkler head with a heat sensing part. SOLUTION: Water exposure preventing walls 5a and 5b are arranged between sprinkler heads 1a and 1b with heat sensing plates 4 to form a water exposure preventing means. Thereby, extinguishing water from the heads 1a and 1b is prevented from watering to mutually adjacent plates 4. The lower tip parts of the respective walls 5a and 5b are set to positions lower than the plates 4. In addition, the walls 5a and 5b are arranged opposite to each other and fixed with respective hinges 6a and 6b to open at the time of its own water aiming and to close at the time of adjacent water aiming. Thereby, its own water aiming is possible and exposure to water aiming from adjacent sprinkler head is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler fire extinguisher and, more particularly, to a sprinkler fire extinguisher equipped with a heat-sensitive sprinkler head.

[0002]

2. Description of the Related Art Conventionally, this type of sprinkler fire extinguishing system has a water supply main pipe connected to a water supply source via a control valve as disclosed in, for example, Japanese Patent Application Laid-Open No. 56-152661. One or more sprinkler heads are attached to a water supply branch pipe branched from the water supply main pipe. These sprinkler heads have a heat-sensitive portion at the lower portion of the head body, and when the temperature around the heat-sensitive portion reaches a predetermined temperature, fire extinguishing water is radially discharged from the lower portion of the head body.

[0003]

In recent years, sprinkler heads having a large watering area have been used in buildings and houses. In addition, the sprinkler head used in a house sufficiently sprays water on furniture and curtains placed along the wall to prevent the spread of fire from the wall side. In such a sprinkler head, the fire extinguishing water is made to reach farther than usual in the lateral direction in order to increase the watering area or to allow the fire extinguishing water to sufficiently reach the room wall side. However, if the fire extinguishing water discharged from the sprinkler head is made to reach far away, the fire extinguishing water discharged from the sprinkler head may fall on the sprinkler head disposed near the head. In particular, when the installation interval of the sprinkler head is narrow, the heat-sensitive part of the sprinkler head may be exposed to water for fire extinguishing from the sprinkler head disposed near the sprinkler head. And it becomes difficult to exert the intended fire extinguishing ability.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and there is provided a sprinkler fire extinguishing apparatus capable of preventing a heat-sensitive portion of a sprinkler head from being flooded with water for extinguishing fire from a sprinkler head disposed near the sprinkler head. The purpose is to provide.

[0005]

In order to achieve the above object, according to the present invention, a plurality of sprinkler heads having a heat-sensitive portion are provided at a lower portion of a head body attached to a water supply pipe, and these sprinkler heads are provided. In a sprinkler fire extinguishing system in which a head is provided on a ceiling surface in the same room, in the vicinity of a sprinkler head having the heat-sensitive portion, the sprinkler head is opened when water is discharged from the sprinkler head, and is closed when water is discharged from an adjacent sprinkler head to the heat-sensitive portion. Characterized in that it is provided with a water-preventing means for preventing water from being wetted.
According to a second aspect of the present invention, in the sprinkler fire extinguisher according to the first aspect, the water-proofing means is a water-proofing wall vertically suspended by a hinge so that the water-proofing prevention wall can be used when water is discharged. It is opened by the water pressure. According to a third aspect of the present invention, in the sprinkler fire extinguisher according to the first aspect, the water-repellent preventing means is a cover member having a hemispherical shape or a shape similar thereto, the lower end of which is open. It is characterized in that when it reaches a temperature, it is deformed in a direction in which it reverses toward the ceiling surface.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a first embodiment of the present invention, in which 1a and 1b show sprinkler heads. These sprinkler heads 1a,
1b includes a head main body 3 attached to a water supply pipe (not shown) via a socket 2, and a heat-sensitive plate 4 as a heat-sensitive portion provided at a lower end of the head main body 3, and includes sprinkler heads 1a and 1b. Between them, water-repellent walls 5a and 5b as water-repellent means are provided.

The water-repellent walls 5a and 5b are for preventing the heat-sensitive plate 4 of the sprinkler head 1a or 1b from being exposed to water for fire extinguishing from the sprinkler head 1b or 1a. , 5b are provided below the heat-sensitive plate 4, respectively. The water-repellent walls 5a and 5b are opposed to each other, and a hinge 6 as a connecting tool is provided at the upper end of the water-repellent walls 5a and 5b.
a, 6b are provided.

The hinges 6a and 6b are attached to fixing members 7a and 7b, and these fixing members 7a and 7b are attached to base portions 9 of protective covers 8a and 8b for protecting the sprinkler heads 1a and 1b from external force. Have been. The base portion 9 is fixed to the ceiling surface 10 so that the upper ends of the water-repellent walls 5a and 5b are hinged 6a and 6b.
It is swingably attached to the ceiling surface 10 via fixing members 7a and 7b and protective covers 8a and 8b. Also,
The directions of rotation of the water-repellent walls 5a and 5b are regulated by hinges 6a and 6b, respectively. For example, the water-repellent wall 5a rotates counterclockwise in the figure, but rotates clockwise in the figure. Are regulated by the hinge 6a.

In the first embodiment constructed as described above, for example, when the fire extinguishing water is discharged from the sprinkler head 1a, the water prevention wall 5a provided near the sprinkler head 1a is driven by the water pressure of the fire extinguishing water. As shown by a two-dot chain line in FIG. At this time, since the rotation direction of the water-repellent wall 5b is restricted only to the outer side of the sprinkler head 1b by the hinge 6b, even if the fire extinguishing water from the sprinkler head 1a hits the water-repellent wall 5b, the sprinkler head 1b will not move. The heat-sensitive plate 4 does not get wet. On the other hand, when the water for fire extinguishing is discharged from the sprinkler head 1b, the water-inhibiting wall 5b provided near the sprinkler head 1b is opened around the hinge 6b as indicated by a two-dot chain line in FIG. To rotate. At this time, the water protection wall 5
a is a sprinkler head 1 whose pivot direction is changed by a hinge 6a.
Since the fire extinguishing water from the sprinkler head 1b hits the water prevention wall 5a, the heat sensitive plate 4 of the sprinkler head 1a does not get wet because the water is restricted only to the outside of the sprinkler head 1a. Therefore, in the above-described first embodiment, even when the installation interval between the sprinkler heads 1a and 1b is narrow, it is possible to prevent the heat-sensitive plates of the sprinkler heads 1a and 1b from being flooded by the fire-extinguishing water. Can be reliably exhibited. In the above-described first embodiment, when the water-preventing walls 5a and 5b receive water discharged from the sprinkler heads 1a and 1b, the sprinkler heads 1a and 1b rotate outward. It is possible to prevent the heat-sensitive plates 4 and 4 of the sprinkler heads 1a and 1b from being flooded with fire-extinguishing water while maintaining the water-spreading area in a wide range. In the above-described embodiment, the water-prevention walls 5a and 5b are provided between the sprinkler heads 1a and 1b having the heat-sensitive plate 4 as the heat-sensitive portion. Even if the prevention walls 5a and 5b are provided, the same operation and effect can be obtained. In the above-described embodiment, the fixing member 7
Although a and 7b can be attached to the base part 9,
The mounting form is not limited to this, and for example, the fixing members 7a and 7b may be directly mounted on the ceiling surface 10 to achieve the same operation and effect as described above. In the above-described embodiment, a case where two sprinkler heads are adjacent to each other has been described. However, the above-described embodiment can be applied to a case where there are three or more adjacent sprinkler heads. What is necessary is just to provide the water prevention wall on the center line connecting the heads.

FIG. 2 is a view showing a second embodiment of the present invention. In the drawing, reference numeral 11 denotes a sprinkler head.
The sprinkler head 11 includes a head main body 13 connected to a water supply pipe (not shown) via a socket 12, and a heat-sensitive plate 14 as a heat-sensitive portion is provided at a lower end of the head main body 13. In FIG. 2, reference numeral 15 denotes a protective cover for protecting the sprinkler head 11 from external force, and a cover member 17 as a water-repelling prevention means is attached to a base portion 16 of the protective cover 15 with screws or the like.

The cover member 17 has a hemispherical shape with an opening at the bottom or a shape similar thereto, and the heat-sensitive plate 14 is surrounded by the cover member 17 on the upper and side portions. The cover member 17 has a two-layer structure as shown in FIG. 3, and the outer surface 17a of the cover member 17 is formed of a material having a smaller coefficient of thermal expansion than the inner surface 17b of the cover 17.

In the second embodiment constructed as described above, since the upper and side portions of the heat sensitive plate 14 are surrounded by the cover member 17, the heat sensitive plate 1 of the sprinkler head 11 is formed.
The cover member 17 can prevent the water 4 from being wetted by the fire extinguishing water from the sprinkler head disposed in the vicinity thereof. Further, in the above-described embodiment, when the ambient temperature of the cover member 17 increases, the inner surface side 17b of the cover member 17 thermally expands more than the outer surface side 17a.
Then, when the ambient temperature of the cover member 17 reaches the operating temperature of the sprinkler head 11, the shape of the cover member 17 is deformed in a direction in which the shape of the cover member 17 is inverted toward the ceiling surface 18 as shown by a two-dot chain line in FIG. Therefore, at the time of watering, the cover member 17 is in a state of being inverted toward the ceiling surface 18,
It is possible to prevent the heat-sensitive plate 14 of the sprinkler head 11 from being flooded with fire extinguishing water while maintaining the water sprinkling area of the sprinkler head 11 in a wide range.

In the second embodiment described above, the cover member 17 surrounding the upper part and the side part of the heat sensitive plate 14 is attached to the base part 16 of the protective cover 15.
The same effect can be obtained by attaching the head to the head body 13 or the ceiling surface 18. In the above-described second embodiment, the shape of the cover member 17 is deformed by the ambient temperature. However, the shape of the cover member 17 is inverted toward the ceiling surface 18 due to, for example, the water pressure of fire-fighting water discharged from the sprinkler head 11. May be deformed in the direction in which it is performed.

[0014]

As described above, according to the present invention, it is possible to provide a sprinkler fire extinguishing apparatus which can prevent the heat-sensitive portion of the sprinkler head from being flooded with fire extinguishing water while maintaining a wide sprinkling area of the sprinkler head. .

[Brief description of the drawings]

FIG. 1 is a diagram showing a main part of a sprinkler fire extinguisher according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a main part of a sprinkler fire extinguishing apparatus according to a second embodiment of the present invention.

FIG. 3 is an enlarged view showing a portion A in FIG. 2;

[Explanation of symbols]

 1a, 1b, 11: Sprinkler head 3, 13: Head body 4, 14: Thermal plate 5a, 5b: Waterproof wall 6a, 6b: Hinge 8a, 8b, 15: Protective cover 17: Cover member

Claims (3)

[Claims] 1. A sprinkler fire extinguisher in which a plurality of sprinkler heads each having a heat-sensitive portion are provided at a lower portion of a head body attached to a water supply pipe, and these sprinkler heads are provided on a ceiling surface in the same room. A sprinkler provided in the vicinity of the sprinkler head, wherein the sprinkler head is opened when water is spouted from the sprinkler head and closed when water is spouted from an adjacent sprinkler head to prevent water from being applied to the heat-sensitive portion. Fire extinguisher. 2. The water-proofing means is a water-proofing wall vertically suspended by a hinge so as to be swingable, and the water-proofing prevention wall is opened by water pressure at the time of water discharge. Item 7. The sprinkler fire extinguisher according to Item 1. 3. A cover member having a hemispherical shape or a similar shape having an open lower portion, wherein the cover member is turned over toward a ceiling surface when an ambient temperature reaches a predetermined temperature. The fire extinguisher according to claim 1, wherein the fire extinguisher is deformed in a direction.