阅读说明：本技术 喷洒头附属品 (Sprinkler attachment ) 是由 小岩康明 于 2021-04-13 设计创作，主要内容包括：本发明提供一种喷洒头的附属品,考虑设计性的同时促进喷洒头的动作的迅速化。具有安装于喷洒头(50)的内环(10)以及将喷洒头(50)所贯通的顶棚孔(H)的边缘隐藏的外环(20),在内环(10)的平面(11)的外缘包括周壁部(12),外环(20)包括将内环(10)容纳在内部的筒部(21)和从筒部(21)的端部沿着顶棚面朝向外侧扩张的碟部(22),并设置有在周壁部(12)和筒部(21)之间设置的开口(30)和在开口(30)沿着远离碟部(22)的方向延伸的通路(31)。(The invention provides an accessory of a sprinkler head, which can promote the rapid action of the sprinkler head while considering the design. The sprinkler is provided with an inner ring (10) mounted on a sprinkler head (50) and an outer ring (20) hiding the edge of a ceiling hole (H) through which the sprinkler head (50) penetrates, wherein the outer ring (20) comprises a peripheral wall part (12) at the outer edge of a plane (11) of the inner ring (10), the outer ring (20) comprises a cylinder part (21) accommodating the inner ring (10) inside and a disc part (22) expanding outwards from the end part of the cylinder part (21) along the ceiling surface, and is provided with an opening (30) arranged between the peripheral wall part (12) and the cylinder part (21) and a passage (31) extending in the direction away from the disc part (22) at the opening (30).)

1. An accessory of a sprinkler head is an accessory arranged on the sprinkler head, wherein,

the method comprises the following steps:

an inner ring installed at the sprinkler head; and

the inner ring can be arranged on the inner outer ring,

a peripheral wall portion is provided at an outer edge of a plane of the inner ring,

the outer ring includes a cylindrical portion accommodating the inner ring therein and a disk portion expanding outward from an end of the cylindrical portion,

the sprinkler head attachment is provided with:

an opening provided between the peripheral wall portion and the cylindrical portion; and

a passage extending at the opening in a direction away from the dish portion.

2. The sprinkler head accessory of claim 1,

the passage is formed by a partition provided adjacent to the peripheral wall portion at an outer edge of the inner ring and a gap formed between the partition and the cylindrical portion.

3. The sprinkler head accessory of claim 2,

the partition portion is disposed closer to a radial center side of the inner ring than the peripheral wall portion.

4. The sprinkler head accessory of claim 3,

the front end of the partition part is inclined towards the direction of the cylinder part.

5. The sprinkler head accessory of claim 1,

the passage is a longitudinal groove provided in the cylinder.

6. The sprinkler head accessory of claim 1 or 2,

the passage is provided in plurality.

7. The sprinkler head accessory of claim 1,

the length of the passage is at least half of the length of the peripheral wall portion.

8. The sprinkler head accessory of claim 1,

the opening is arcuate along an outer edge of the inner ring.

9. The sprinkler head accessory of claim 1,

the inner ring is provided with a tube at a position closer to the center than the opening, and the tube portion constitute the passage.

Technical Field

The present invention relates to an attachment for a sprinkler head installed in a building.

Background

The spraying equipment is arranged in the building, senses the heat of the fire and automatically acts to sprinkle water to extinguish the fire. The sprinkler head has a nozzle inside, and the nozzle is connected to a pipe connected to a water supply source. The nozzle is normally closed by the action of a valve supported by the thermal sensitive operating part. When a fire occurs, the heat-sensitive operating part operates by the heat of the fire to release the closed state of the valve, and the water filled in the pipe is discharged from the nozzle. The sprinkler head has a guide plate for scattering water around an extension line of an outlet of the nozzle, and the water colliding with the guide plate is dispersed in a predetermined range to suppress a fire and extinguish the fire.

In the sprinkler head installed indoors, the piping is hidden by the ceiling plate, and the deflector is disposed on the indoor side through the ceiling plate. Thus, the ceiling plate has holes for the sprinkler heads to pass through. In order to conceal the hole, accessories such as a sealing plate and a hole cover are provided on the sprinkler head (see, for example, patent document 1).

In fig. 6, in order to hide the hole H of the ceiling plate C into which the shower head 63 is inserted, an outer ring 62 having a dish portion 61 having a diameter larger than that of the hole H and an inner ring 64 attached to the shower head 63 are provided. The inner ring 64 is fitted into a cylindrical portion 65 extending from the inner edge of the disk portion 61 to the ceiling rear surface, thereby concealing the hole H of the ceiling plate C.

Patent document 1: description of U.S. Pat. No. 7185567, FIG. 5

Disclosure of Invention

When the operation of the sprinkler is to be promoted, the design is deteriorated, and it is difficult to achieve both of them.

Accordingly, an object of the present invention is to promote the rapidity of the operation of the sprinkler head while taking into consideration the design of the sprinkler device.

In order to achieve the above object, the present invention provides the following sprinkler head accessory. That is, the attachment provided in the sprinkler head includes an inner ring attached to the sprinkler head and an outer ring capable of disposing the inner ring inside, a peripheral wall portion is provided on an outer edge of a plane of the inner ring, the outer ring includes a cylindrical portion accommodating the inner ring inside and a disk portion expanding outward from an end of the cylindrical portion, and an opening provided between the peripheral wall portion and the cylindrical portion and a passage extending in a direction away from the disk portion in the opening are provided.

Thus, the opening provided between the peripheral wall portion and the cylindrical portion promotes the discharge of hot air toward the ceiling rear surface during a fire and continuously supplies hot air flow to the thermal operation portion of the sprinkler head, thereby promoting the rapidity of the sprinkler head operation. Specifically, the hot air flow is diffused to the space on the back surface of the ceiling at a position separated from the indoor side of the ceiling plate by the passage provided in the opening. This prevents the hot air flow from stagnating on the back side of the inner ring, and allows the hot air flow to be continuously discharged to the ceiling back side while maintaining the temperature difference between the inside and outside of the passage.

According to the present invention, the peripheral wall portion can be provided with the passage. Further, the cylindrical portion may be provided with a passage. If the opening is provided between the peripheral wall portion and the cylindrical portion, the peripheral wall portion and the cylindrical portion provided at the edge of the opening serve as a passage. Further, since the opening is not conspicuous, it can be configured without impairing the design.

According to the present invention, since the hot air flow caused by a fire can be continuously supplied to the heat sensitive operation portion of the sprinkler head, the operation of the sprinkler head can be accelerated.

Drawings

Fig. 1 is a view showing a sprinkler head attachment provided to a ceiling plate.

Fig. 2 is a sectional view taken along line II-II shown in fig. 1.

Fig. 3 is a perspective view of the inner ring of fig. 1.

Fig. 4 is a diagram showing a modification of the first embodiment.

Fig. 5 is a perspective view of the inner ring of fig. 4.

Fig. 6 is a sectional view of a conventional sprinkler head attachment.

Fig. 7 is a partially enlarged view showing the vicinity of the vent portion in fig. 2.

Wherein the reference numerals are as follows:

10 inner ring

11 plane of the plane

12 peripheral wall part (sheet)

13 holes

14 partition (opposite wall)

14a recess

20 outer ring

21 barrel part

22 dish part

30. 35 opening

31 path

C ceiling board

H hole

50 sprinkler head

51 pipe connection screw

52 heat-sensitive operating part

Detailed Description

As shown in fig. 1 and 2, the sprinkler a1 of the present invention is provided between the sprinkler 50 and the ceiling plate C, wherein the sprinkler 50 is disposed in the through hole H penetrating the ceiling plate C. And, the sprinkler a1 is configured to have an inner ring 10 and an outer ring 20. The outer ring 20 is disposed between the sprinkler head 50 and the ceiling plate C, and the inner ring 10 is disposed between the outer ring 20 and the sprinkler head 50.

The sprinkler head attachment a1 is disposed along the axial direction of the inner ring 10 and the outer ring 20 in the vertical direction in which the through hole H is formed. These are made of metal, and are made of, for example, a steel plate. These may be made of, for example, stainless steel plate, brass plate, or plastic.

The inner ring 10 is disposed between the outer ring 20 and the sprinkler head 50. The inner ring 10 has a disk-shaped flat surface 11 that expands in a radial direction (horizontal direction) that is a direction intersecting the cylindrical axis direction thereof, and a peripheral wall portion 12 that is a "piece" that stands along the cylindrical axis direction (vertical direction) of the inner ring 10 from the outer edge of the circular shape of the flat surface 11. Since the inner ring 10 has the peripheral wall portion 12, a distance in the cylinder axis direction can be secured between the flat surface 11 at the lower end, which is the end on one side of the inner ring 10, and the front end of the peripheral wall portion 12 at the upper end, which is the end on the other side of the inner ring 10.

A hole 13 of a circular shape for disposing the sprinkler head 50 is provided at the center in the radial direction of the plane 11. The edge of the hole 13 is bent along the thread of the pipe connection screw 51 of the sprinkler head 50 so that the pipe connection screw 51 can be screwed into the edge of the hole 13.

The peripheral wall portion 12 (piece) is in contact with the cylindrical portion 21 of the outer ring 20 and fitted to the inner periphery thereof. The peripheral wall portions 12 are arranged at the outer edge of the flat surface 11 at regular intervals in the circumferential direction of the inner ring 10. The number of the peripheral wall portions 12 is 5 in the present embodiment. As shown in fig. 7, the inner ring 10 has a partition portion 14 as an "opposing wall portion" disposed to face the outer ring 20 with a gap therebetween. The partition 14 extends along the cylindrical portion 21. The partition portion 14 is disposed closer to the radial center of the inner ring 10 than the peripheral wall portion 12, as shown in fig. 1, and more specifically, is erected from the recess portion 14 a. As shown in fig. 1, 2, and 7, a recess 14a formed at a distance from the tube 21 is provided between the circumferential wall portions 12 adjacent to each other in the circumferential direction of the inner ring 10, and the partition portion 14 is configured to rise from the recess 14 a.

As shown in fig. 2, the outer ring 20 is disposed between the inner ring 10 and the ceiling plate C installed at the sprinkler head 50. The outer ring 20 has a cylindrical portion 21 and a disc portion 22. The tube 21 extends in the direction of crossing the ceiling plate C (the tube axis direction of the outer ring 20). As described above, the inner ring 10 is fitted into the cylindrical portion 21. The cylindrical portion 21 is disposed such that an upper end, which is the other end in the cylindrical axis direction, protrudes upward beyond the upper end of the peripheral wall portion 12. This ensures a distance in the axial direction between the flat surface 11 located at the lower end of the inner ring 10 and the front end of the cylindrical portion 21 located at the upper end of the outer ring 20. The dish portion 22 is expanded from the lower end, which is one end portion in the cylinder axis direction of the cylinder portion 21, toward the outside in the radial direction of the cylinder portion 21 along the ceiling surface. The outer diameter of the disk 22 is larger than the inner diameter of the hole H formed through the ceiling plate C. And the outer edge of the dish portion 22 is in contact with the ceiling plate C.

As shown in fig. 1 and 2, the peripheral wall portion 12 extends from the outer edge of the flat surface 11 along the cylindrical portion 21. The inner ring 10 presses the cylindrical portion 21 via the peripheral wall portion 12, and thereby the outer ring 20 is locked. The partition portion 14 disposed closer to the center side in the radial direction of the inner ring 10 than the peripheral wall portion 12 is separated from the cylindrical portion 21, and the opening 30 is formed between the partition portion 14 and the cylindrical portion 21. The opening 30 is formed in an arc shape along the outer edge of the flat surface 11 of the inner ring 10.

As shown in fig. 2 and 7, the sprinkler attachment a1 has a passage 31 formed by a gap passing through the rear surface of the ceiling plate C from the indoor side of the ceiling plate C between the tube portion 21 of the outer ring 20 and the partition portion 14 (facing wall portions). The passage 31 is formed by a gap formed between the cylindrical portion 21 and the partition portion 14 provided adjacent to the peripheral wall portion 12 on the outer edge of the inner ring 10. More specifically, the passage 31 extends from the opening 30 toward the upper side in the drawing in the cylindrical axis direction of the inner ring 10 between the partition portion 14 rising from the recess 14a and the cylindrical portion 21, and is disposed between the two peripheral wall portions 12, 12. The cross section of the passage 31 is circular along the outer edge of the inner ring 10.

The passage 31 is provided in at least one, preferably a plurality. Specifically, 3 to 6 points are more preferably provided. The passage 31 has a length equal to or longer than a predetermined length in the cylinder axial direction of the cylinder portion 21 of the outer ring 20, and the length is set to be equal to or longer than half the length of the peripheral wall portion 12, and more preferably, the length can be configured to be longer than the length of the peripheral wall portion 12.

The air heated in the case of a fire rises indoors and stays below the ceiling panel C. At this time, a temperature difference occurs between the room in which the fire breaks out and the space on the ceiling rear surface partitioned by the ceiling plate C and the room, and a part of the heated air staying below the ceiling plate C flows into the tube portion 21 from the opening 30, passes through the passage 31, and is discharged to the ceiling rear surface. Fig. 7 shows a flow a of air that passes through the ventilation portion 31 from the opening 30 and is discharged to the ceiling rear surface.

Here, the distance in the cylinder axis direction of the sprinkler attachment a1 is secured between the flat surface 11 on the inlet side of the passage 31, and the tip of the peripheral wall portion 12 and the tip of the cylinder portion 21 on the outlet side of the passage 31. Meanwhile, since the inner ring 10 is configured to have the peripheral wall portion 12 and the partition portion 14, the air passing through the passage 31 is less likely to flow radially inward of the inner ring 10 than the peripheral wall portion 12 and the partition portion 14.

In this way, the air passing through the passage 31 is discharged and diffused at a position away from the flat surface 11 of the inner ring 10, and thus the temperature rise in the back space of the flat surface 11 (above in the cylindrical axis direction of the inner ring 10) is suppressed. Thereby, the temperature difference between the indoor side and the ceiling rear surface is maintained with the flat surface 11 of the inner ring 10 as a boundary, and the heated air in the room is continuously discharged from the opening 30 to the roof rear surface through the passage 31. According to the configuration of the present embodiment, the degree of heat transferred from the airflow to the heat sensitive operation portion 52 of the sprinkler head 50 can be increased by the continuous high-flow-rate airflow, and the operation of the sprinkler head 50 can be accelerated.

On the other hand, if the opening 30 is not formed between the outer edge of the flat surface 11 (the partition portion 14) and the cylindrical portion 21, an airflow is less likely to be generated in the vicinity of the sprinkler head 50, and heat is less likely to be transferred to the surface of the heat sensitive operation portion 52 by convection of the heated air. Therefore, in this case, it is difficult to accelerate the operation of the sprinkler head 50.

On the other hand, a structure in which the opening 30 is formed between the outer edge of the flat surface 11 and the cylindrical portion 21 but the partition portion 14 is not provided is also conceivable. In this case, when the air having passed through the opening 30 is discharged to the space on the ceiling rear surface, the heated air flows into the space on the rear surface of the flat surface 11, and thus the temperature difference between the indoor side of the flat surface 11 and the ceiling rear surface becomes small with time. If the temperature difference between the indoor side of the flat surface 11 and the ceiling rear surface becomes small, the natural convection driven by the temperature difference causes the air flow a in the ventilation portion 31 to be stopped. Accordingly, the air flow around the sprinkler head 50 is stagnant, and heat is less likely to be transferred to the heat sensitive operation portion 52 than in the structure of the present embodiment in which the partition portion 14 is provided.

Further, when the inner ring 10 is disposed below the cylindrical portion 21, which is a position close to the disk portion 22, in the cylindrical axial direction, the depth of the concave-shaped space (the space behind the flat surface 11) in the cylindrical axial direction on the back surface side of the inner ring 10 and on the inner diameter side of the cylindrical portion 21 becomes large. The sprinkler accessory a1 in this case becomes a structure in which air is easily stagnated in the concave-shaped space. However, in the present embodiment, since the inner ring 10 has the partition portion 14, the ventilation portion 31 is formed between the partition portion 14 and the cylindrical portion 21. As shown in fig. 7, the air passes through the ventilation portion 31 disposed on the side opposite to the concave space (the back surface of the partition portion 14) across the partition portion 14. This causes the air flow to be rectified upward, and the air staying in the concave space is sucked by the negative pressure generated by the air flow, thereby having an effect of promoting the discharge toward the outside of the cylindrical portion 21.

The opening 30 is preferably provided to be large to some extent, but is desirably configured to be as small and inconspicuous as possible in consideration of design. On the other hand, fig. 4 shows an embodiment in which the stability of the engagement with the outer ring 20 is emphasized. Fig. 4 is a modification of the embodiment of fig. 1 to 3, and parts having the same structure are given the same reference numerals and their description is omitted. In fig. 4, two adjacent portions of the partition portion 14 are the peripheral wall portion 12, and the opening 35 is more conspicuous than in the above-described embodiment because the interval between the partition portion 14 and the cylindrical portion 21 is large. However, since the arc length of the opening 35 is short, the ratio of the circumferential wall 12 of the pressing cylinder 21 is large, and the engagement stability with the cylinder 21 is increased.

Next, embodiments other than the above will be described. In the above-described embodiment, the partition portion 14 is formed by bending the edge of the flat surface 11, but the present invention is not limited to this, and for example, a tube may be provided on the center side of the opening 30 in the inner ring 10, and a space between the tube and the tube portion 21 may be formed as the passage 31.

The passage 31 may be provided in the cylindrical portion 21, and specifically, a vertical groove may be provided in a part of the cylindrical portion 21.

On the other hand, in the embodiment shown in fig. 2, the partition portion 14 is provided substantially parallel to the cylindrical portion 21, but when the front end of the partition portion 14 is configured to be inclined in the direction of the cylindrical portion 21, the airflow flowing in from the opening 30 can be made to advance toward the cylindrical portion 21 along the partition portion 14 and discharged from the passage 31, and thereafter, can be discharged to the outside along the inner periphery of the cylindrical portion 21.