JPH0591714U - Heat sensitive body for sprinkler head - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to improve the heat-sensing efficiency of the heat-sensing body to promptly operate the sprinkler head to contribute to early fire extinguishing. A heat-sensitive body to be mounted on a sprinkler head body 21, wherein at least two heat-sensitive plates 24 are provided on a heat-sensitive body body 23 so as to project at predetermined intervals, and the heat-sensitive body body 23 is attached to the sprinkler head body 21. It is characterized in that the outer diameter of the heat-sensitive plate located on the upper side when mounted is made larger.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat sensitive body for a sprinkler head, and more particularly to an improvement of a heat sensitive body mounted on the sprinkler head body to conduct heat to the sprinkler head body for operation.

[0002]

[Prior Art]

 Conventionally, as the heat sensitive body for this type of sprinkler head, one having a single heat sensitive plate has predominantly been used, but FIG. 3 has been devised to improve the heat sensitive efficiency of the heat sensitive body. .

That is, such a heat-sensitive body comprises a heat-sensitive body 31 having two substantially circular heat-sensitive plates 32, 32 provided substantially horizontally with a predetermined distance therebetween. The element 32 senses the heat in the room and conducts the heat to the sprinkler head body 21a.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional one, since the heat sensitive plates 32, 32 having the same size are provided substantially parallel to the heat sensitive body 1a, the heat sensitive plate 32 on the lower side blocks the flow of heat upward. Therefore, there is a problem that the upper heat sensitive plate 32 does not serve as a heat sensitive plate.

As a result, the operation of the sprinkler head was delayed, and the fire could not be extinguished early.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, and by greatly improving the heat-sensitive efficiency of the heat-sensitive body, the sprinkler head can be quickly operated to contribute to early fire extinguishing. The task is to do.

[0007]

[Means for Solving the Problems]

 That is, in order to solve the above problems, the present invention is a heat sensitive body mounted on a sprinkler head body 21, wherein at least two or more heat sensitive plates 24 are provided on the heat sensitive body 23 at predetermined intervals. Further, when the heat sensitive body 23 is attached to the sprinkler head main body 21, the heat sensitive plate for the sprinkler head is configured so that the outer diameter of the heat sensitive plate located on the upper side is larger.

[0008]

[Action]

 Therefore, in the heat sensitive body for a sprinkler head having the above-mentioned structure, at least two heat sensitive plates 24 are configured such that the outer diameter of the heat sensitive plate 24 on the upper side is larger than that of the heat sensitive plate on the upper side. Each of the heat sensitive plates 24 can exhibit the heat sensitive function without hindering the heat sensing of the heat sensitive plate 24 located on the upper side by the heat sensitive plate 24.

Therefore, since the heat is sensed by the plurality of heat sensitive plates 24, the heat sensitive efficiency can be improved, and the heat sensed by the heat sensitive plate 24 can be transmitted through the heat sensitive body 23 to the sprinkler. As a result of being quickly transmitted to the head main body 21, it greatly contributes to the convenience of early fire extinguishing such as a fire.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 is a nozzle having a fire extinguishing water inflow passage 2 formed therein, and a substantially cylindrical frame 3 is screwed to a lower portion of a peripheral end edge of the nozzle 1. Reference numeral 4 denotes a plug body for closing an outlet 5 formed in the lower part of the nozzle 1. A flange portion 6 is formed on the peripheral edge of the lower end portion of the plug body 4, and a screw carved on the inner peripheral surface. A screw body 8 is screwed into the portion 7, and a hexagonal hole 8a is formed at one end of the screw body 8.

Reference numeral 9 denotes an elastic body made of a disc spring whose surface is coated with a fluororesin, and is in a tension state by receiving a constant pressing force between the lower end of the nozzle 1 and the upper surface of the collar 6 of the plug 4. The inner peripheral surface of the elastic body 9 is fitted into the concave groove 4a formed on the outer peripheral surface of the plug body 4.

Reference numeral 10 is a bent deflector connected to the outer peripheral edge of the plug body 4, and a guide ring 11 is provided at the upper end of the deflector so as to be slidable on the outer peripheral surface of the nozzle 1. The plug 12 is connected and functions as a guide when the plug 3 falls.

Reference numeral 13 denotes an elastically deformable locking body which is formed in a partially notched ring shape and whose diameter expands and contracts. Reference numerals 14, 15 denote a pair of holding bodies for holding and holding the locking body 13, and a hole 14a into which the lower end portion of the screw body 8 can be fitted is formed on the upper surface of the upper holding body 14. At the same time, a threaded portion 14c is formed on the inner peripheral surface of the tubular portion 14b and is slidably fitted on the tubular portion 15a of the lower holding body 15. Reference numerals 16 and 17 denote tapered surfaces formed on the outer peripheral edges of the flanges of the holding bodies 14 and 15, respectively, and the distance between them is set so that the locking body 13 can be held in the expanded state between them. It is formed so that it becomes narrower toward the inside.

Reference numeral 18 denotes an inwardly projecting portion formed on the inner peripheral edge of the lower end portion of the nozzle 1, and a wall surface 19 that engages with the locking body 13 sandwiched by the sandwiching bodies 14 and 15 is formed on the inner surface thereof. The inner diameter of the inward convex portion 18 is larger than that of the sandwiching bodies 14 and 15.

Reference numeral 20 denotes a lock screw screwed to the screw portion 14c of the upper holding body 14, and a through hole 20a is bored at substantially the center thereof. The sprinkler head body 21 is constituted by the above members.

Reference numeral 22 includes a heat-sensitive body 23 fitted to the lower sandwiching body 15, and a substantially circular heat-sensitive plate 24 protruding substantially horizontally from the side surface of the heat-sensitive body 23 at a predetermined interval. It is a heat-sensitive body, and the outer diameter of each heat-sensitive plate 24 is set to be as large as the upper heat-sensitive plate 24.

Reference numeral 25 is a heat insulating packing interposed between the lower end of the lower holding body 15 and the heat sensitive body 23, and 26 is interposed between the upper surface of the collar portion 20 b of the lock screw 20 and the heat sensitive body 23. The loaded soluble bodies are shown respectively. Reference numeral 27 denotes a cap that is detachably mounted to block the through hole 20a of the lock screw 20 to prevent dust from entering the inside, and 28 denotes a head cover screwed to the lower end of the frame 3.

The present embodiment is configured as described above, and in the event of a fire or the like, the sprinkler head operates as follows.

That is, when a fire occurs, the heat-sensing body 22 senses the heat. The heat-sensing body 23 has three heat-sensing plates 24 projecting laterally and the outer diameter of which is the upper side. Since the heat sensitive plate 24 is formed to have a size as large as that of the heat sensitive plate 24, heat can be sensed by another heat sensitive plate 24 without being blocked by the heat sensitive plate 24a on the lower side.

As described above, since each of the heat sensitive plates 24 can exhibit the heat sensitive function, the heat sensitive efficiency of the heat sensitive body 24 itself can be improved.

Therefore, as a result of the heat sensing by each of the heat sensitive bodies 24 being rapidly conducted to the fusible body 26, the time from the occurrence of a fire to the extinction due to the operation of the sprinkler head can be greatly shortened.

That is, when the temperature of the heat sensitive body 22 rises, the fusible body 26 melts or softens, the lower sandwiching body 15 descends and the locking body 13 contracts, and the wall surface of the inwardly projecting portion 18 of the frame 3 is reduced. The engagement state with 19 is released, and as a result, both clamping bodies 14, 15 and the screw body 8, plug body 4 and the like supported by them fall below the nozzle 1, and the outflow port 5 is opened. .

Then, the fire extinguishing water flowing out from the outflow port 5 collides with the upper surface of the stopper 4, and then is dispersed in all four directions and is sprinkled radially.

In the above embodiment, the outer diameter of the heat sensitive plate 24 is set to be as large as the upper sensing plate 24. However, for example, the lower sensing plate 24a as shown in FIG. It is also possible to form a notch 29 for allowing heat to flow upward, or to form a hole 30 for heat distribution as shown in FIG. 2B, or to provide both of them. is there. In the former case, the width L of the notch 29a of the heat sensitive plate 24a at the lower end is set to be larger than the width L'of the notch 29b of the heat sensitive plate 24b at the intermediate position.

Further, although the heat-sensitive body 22 having the three heat-sensitive plates 24 has been described in the embodiment, the number of such heat-sensitive plates 24 is not limited to this. In short, at least two or more heat sensitive plates 24 may be provided on the heat sensitive body 23.

Further, it goes without saying that the specific configuration of the sprinkler head main body 21 is not limited to the above embodiment, and can be widely applied to sprinkler heads to which the heat sensitive body 22 can be attached.

[0028]

[Effect of the device]

 As described above, since the present invention is provided with at least two or more heat sensitive plates on the body of the heat sensitive body, and the outer diameter of the heat sensitive plate on the upper side is larger, the heat sensitive body located on the upper side is The heat sensing by the plates is different from the conventional one in which the heat sensing plate on the lower side is hindered, and each heat sensing plate can sense heat individually.

Therefore, the heat-sensitive efficiency of the heat-sensitive body can be improved, and the heat can be quickly transferred to the sprinkler head body via the heat-sensitive body to operate the sprinkler head body. I got a special effect of doing.

Further, since the heat sensitive body itself has an extremely simple structure, there is also a practical effect that its manufacture can be carried out inexpensively and easily.

[Submission date] August 26, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

Conventionally, as a heat sensitive body for this type of sprinkler head, a heat sensitive body having one heat sensitive plate has been mainly used. It is shown in.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

As described above, since each of the heat sensitive plates 24 can exhibit the heat sensitive function, the heat sensitive efficiency of the heat sensitive plate 24 itself can be improved.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

Therefore, as a result of the heat sensing by each of the heat sensitive plates 24 being quickly conducted to the fusible body 26, the time from the occurrence of a fire to the extinction due to the operation of the sprinkler head can be significantly shortened.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

In the above embodiment, the outer diameter of the heat sensitive plate 24 is set to be as large as the upper heat sensitive plate 24. However, for example, the lower heat sensitive plate 24a as shown in FIG. It is also possible to form a notch 29 for allowing heat to flow upward, to form a hole 30 for heat distribution as shown in FIG. 2B, or to provide both of them. is there . In the former case, the width L of the notch 29a of the heat sensitive plate 24a at the lower end is set to be larger than the width L'of the heat sensitive plate 24b at the intermediate position.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

Further, the specific shape of the heat-sensitive plate 24 is not limited to the embodiment, and if the heat-sensitive plate 24 is formed in a corrugated shape as shown in FIG. And the number of them may be at least two or more.

[Brief description of drawings]

FIG. 1 is a half cutaway view showing an embodiment of a sprinkler head according to the present invention.

FIG. 2A and FIG. 2B are perspective views of a heat sensitive body showing another embodiment.

FIG. 3 is a partial cross-sectional view of a sprinkler head showing a conventional example.

[Explanation of symbols]

 21 ... Sprinkler head body 23 ... Heat sensitive body 24 ... Heat sensitive plate 29 ... Notch 30 ... Hole

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[Procedure amendment]

[Submission date] August 26, 1992

[Procedure Amendment 6]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

FIG. 3 is a front view of a heat sensitive body showing another embodiment.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] Fig. 4

[Correction method] Added

[Correction content]

FIG. 4 is a partial cross-sectional view of a sprinkler head showing a conventional example.

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Added

[Correction content]

[Figure 4]

Claims (3)

[Scope of utility model registration request] 1. A heat-sensitive body mounted on a sprinkler head body 21, wherein at least two heat-sensitive plates 24 are provided on a heat-sensitive body 23 at a predetermined interval and the heat-sensitive body is provided.
When 23 is attached to the sprinkler head body 21,
A heat sensitive body for a sprinkler head, characterized in that the heat sensitive plate located on the upper side has a larger outer diameter. 2. A heat-sensitive body mounted on a sprinkler head body 21, wherein at least two heat-sensitive plates 24 are provided on the heat-sensitive body body 23 at predetermined intervals and at least one of the heat-sensitive plates 24 is provided. When the heat sensitive body 23 is attached to the sprinkler head body 21, the heat sensitive plate 24 located on the lower side is attached.
A heat sensitive body for a sprinkler head, wherein a is formed with a notch 29 for allowing heat to flow. 3. The heat sensitive body for a sprinkler head according to claim 2, wherein a hole 30 for heat circulation is formed instead of or together with said notch 29.