JP3082077B2 - Sprinkler head and heat collecting plate mounting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler head for fire extinguishing, and more particularly to a frame sprinkler head having a frame protruding from a main body and a method of attaching a heat collecting plate to the frame sprinkler head.

[0002]

2. Description of the Related Art As a sprinkler head for fire extinguishing, a flash type sprinkler head in which a main body is embedded in a ceiling and a deflector falls under the ceiling when a fire occurs, and a multi type sprinkler head in which a bowl-shaped deflector is attached to the main body. And a frame type sprinkler head in which the frame protrudes from both sides of the nozzle of the main body.

[0003] Flush sprinkler heads and multi-type sprinkler heads are excellent in interior design because they hardly protrude from the ceiling surface and have a good appearance, but are complicated in shape and structure.
There is a problem that the production is troublesome and expensive. Accordingly, flash sprinkler heads and multi-type sprinkler heads are mounted on the ceiling of modern buildings, underpasses, low ceiling buildings, etc., which value interior design.

[0004] The frame type sprinkler head is inferior to the flash type or the multi type in terms of interior design because of its large projection from the ceiling surface. However, its simple shape and structure make it easy to manufacture. It has the feature of being inexpensive. Therefore, frame type sprinkler heads are often installed in places where importance is not placed on aesthetic effects, such as in factories, warehouses, high ceiling theaters and gymnasiums.

By the way, when a fire occurs and the sprinkler head operates, a large amount of water is sprayed from the activated sprinkler head to extinguish the fire. Then, large amounts of water will be sprayed to extinguish large fires. When such a large amount of water is sprayed, the large amount of water flows along the floor and flows into an adjacent room, or leaks from the ceiling into a room downstairs. In order to extinguish a fire at a fire site, it is unavoidable that furniture, office equipment, important documents, expensive rugs, etc. at the fire site will get wet.However, the next room or downstairs room other than the fire site will get wet. Is not preferred.

[0006] When the operation of the sprinkler head is slow and the fire becomes large, not only the burnt area increases,
A large amount of smoke or toxic gas generated by the fire flows into another room and adversely affects the human body.

[0007] For this reason, related persons have come to demand a sprinkler head that can extinguish a fire by spraying water as early as possible. A sprinkler head that operates quickly by sensing the small hot air flow of the initial fire is called a fast-acting sprinkler head. In order to make the sprinkler head a fast moving type, there is a means to reduce the amount of low melting point alloy used for the thermal decomposition part, or to place the low melting point alloy at the lowest position of the thermal decomposition part and approach the fire source as much as possible. is there.

[0008] However, the means for attaching the heat collecting plate to the thermosensitive decomposition portion is more effective than the means for reducing the amount of the low melting point alloy and the position of the low melting point alloy at the lowest position for making the sprinkler head a fast moving type. Effective. A heat collecting plate attaches a large-area plate made of a material with good heat conduction to the thermal decomposition part.A large amount of heat from the fire is absorbed by the heat collecting part and the heat is absorbed by the low heat-decomposition part. It propagates to the high melting point alloy to quickly melt the low melting point alloy to speed up the operation of the sprinkler head.

[0009]

The flash-type sprinkler head and the multi-type sprinkler head have a small projection from the ceiling surface, and furthermore, a heat-sensitive decomposition portion is provided at a lower portion. Installation is easy and the heat collecting plate does not impair the aesthetic effect. Therefore, the heat collecting plate is very effective for a flash type sprinkler head and a multi type sprinkler head.

However, the frame-type sprinkler head has a relatively high sensitivity because it protrudes from the ceiling surface and easily comes into contact with the hot air flow. Frame-type sprinkler heads do not suffer much damage even if they get wet, and even if the frame-type sprinkler head is not good in design, mounting a large heat collecting plate will further impair the aesthetic effect. No heat collecting plate was attached to the sprinkler head. One of the reasons why the heat collecting plate was not attached to the frame type sprinkler head was that it was difficult to attach the heat collecting plate because the thermal decomposition part was installed in the frame. It is.

However, even in a place where a frame-type sprinkler head is mounted, a fast-acting sprinkler head is provided so that the fire can be extinguished during a small fire as much as possible in order to reduce the burned area and protect people from smoke and toxic gas. Is being demanded. The present invention
An object of the present invention is to provide a frame type sprinkler head to which a heat collecting plate is attached and a method of attaching the heat collecting plate to the frame type sprinkler head.

[0012]

A flash type sprinkler head and a multi type sprinkler head have a heat collecting plate mounted on a thermosensitive decomposition portion at a lower portion. Therefore, if the heat collecting plate has a smaller diameter than the main body or the frame, it does not feel strange when viewed from below. On the other hand, since the frame type sprinkler head has a horseshoe-shaped frame, if the heat collecting plate is attached parallel to the ceiling surface, the heat collecting plate protrudes greatly from the frame and not only makes the appearance very bad, but also Dust and dust easily accumulate on the heat collecting plate, and the accumulated dust and dust hinder heat absorption. The inventor of the present invention has made extensive studies on preventing the frame-type sprinkler head from protruding greatly from the frame when the heat collecting plate is attached to the frame-type sprinkler head, and completed the present invention.

According to a first aspect of the present invention, in a frame type sprinkler head in which a frame protrudes from a main body and a compression-sensitive part is provided between a valve body of the main body and the frame, the frame is bent in parallel with a longitudinal direction of the frame. Shape heat collecting plate
Forms a sprinkler head characterized in that attaching a seat provided at the lower end of said population hot plate to compress the thermal decomposition portion.

According to a second aspect of the present invention, there is provided a method of attaching a heat collecting plate to a compression and thermal decomposition portion of a frame type sprinkler head, wherein a short cut is formed in a longitudinal center portion of the heat collecting plate, and the cut is formed by the cut. The divided portion is bent by approximately 90 degrees to form two seats, and the central portion above the cut portion is bent in the seat direction to overlap the two seats, and then the seat is compressed. A method of attaching a heat collecting plate, wherein the heat collecting plate is attached to a thermosensitive decomposition portion.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The compression / pyrolysis portion to which the heat collecting plate is attached by the sprinkler head of the present invention may be either a cylinder or a plunger constituting the compression / pyrolysis portion. Since the cylinder and plunger are in direct contact with the low melting point alloy,
When the seats are engaged and attached, the heat absorbed by the heat collecting plate is directly transmitted to the low melting point alloy.

The heat collecting plate used in the present invention has a length of the frame .
It is good to bend it parallel to the hand direction . This is because, when the heat collecting plate is bent, the strength of the heat collecting plate itself increases, and the heat collecting plate is less likely to be deformed even when some external impact is encountered. The heat collecting plate may be bent only at the center, or may be bent at both sides to the opposite side from the center to form a waveform. If the heat collector plate is bent in a waveform, not only will the strength be further increased, but also the hot air flow of the fire flowing obliquely to the heat collector plate will circulate to the rear along the waveform, By heating both sides of the heat collecting plate, the operation can be performed more quickly.

If a hole is formed in the center of the heat collecting plate,
The hot air flow of the fire flowing from the front to the heat collecting plate propagated from the heat collecting plate to the cylinder and plunger to heat the entire compression sensitive pyrolysis part on the back side of the heat collecting plate through the hole. other components heat is in contact with the heat collecting plate, immediately
Physically, it is difficult to escape to the fitting body, and the operation is also faster.

If the heat collecting plate is mounted at a position not covering the cylinder, the cylinder filled with the low melting point alloy can be directly heated by the hot air flow when a hot air flow of fire flows from the front to the heat collecting plate. become.

According to the method of attaching a heat collecting plate of the present invention, the center of the heat collecting plate is bent so that two seats formed by bending a portion divided by the cut by approximately 90 degrees are overlapped. In this case, the strength of the portion rising from the seat becomes very strong.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. The sprinkler head shown in the embodiment is a so-called upright type sprinkler head which is mounted so that the deflector is located on the upper side. FIG. 1 is a front view of the sprinkler head of the present invention, FIG. 2 is a sectional view taken along line AA of FIG.
3 is a rear view of the sprinkler head of the present invention, FIG. 4 is an enlarged sectional view of a main part, FIG. 5 is a perspective view of a heat collecting plate, and FIG. 6 is a developed view of the heat collecting plate.

The sprinkler head of the present invention has a main body 1
0, valve body 20, deflector 30, compression-sensitive pyrolysis part 4
0.

The main body 10 has a cylindrical shape and is provided with a male screw 11 on the outside for connecting to a pipe (not shown). A water guide hole 12 is formed inside the main body 10, and a valve seat 13 is formed at the tip of the water guide hole. From both sides of the valve seat 13, horseshoe-shaped frames 14 project from each other. A fastening screw 16 having a hemispherical tip is screwed into the boss 15.

The valve body 20 has a disk shape, and has a V-shaped groove 21 formed on one side, and a copper packing 22 attached on the other side. The valve body 20 is installed on the valve seat 13 in a watertight state, and the packing 22 is on the valve seat side.

The deflector 30 has a number of blades 3 around it.
1 and is fixed to the end of the frame 14 described above.

The compression and thermal decomposition part 40 is provided between the boss 15 of the frame 14 and the valve body 20 and holds the valve body 20 at normal times. The valve body 20 is strongly pressed against the valve seat 13 so that water is discharged from the valve seat. Avoid leaks. The compression sensitive pyrolysis part 40 includes a support 41, a movable piece 42, a balance 43, a cylinder 44, a low melting point alloy 45, a plunger 46, and a fitting body 4.
7. The heat collecting plate 48 is provided.

The column 41 has a substantially elliptical shape, and a hole 49 is formed in the center. An engaging branch 50 is bent outward from the hole 49 from the end of the hole. The branch 51 is bent in the same direction as the engaging branch 50. Both ends of the support column 41 are knife edges.

The movable piece 42 has an L-shaped cross section, a hemispherical groove 52 is formed on the base surface, and a hemispherical groove 52 is formed on the back surface.
A V-shaped groove 53 is engraved on the inner side.

The balance 43 is shaped like a sickle with a large width at one end.
A hemispherical projection 54 is formed on the large width portion, and an engaging portion 55 bent obliquely is formed on the other end.

The cylinder 44 has a bottomed cylindrical shape, and a fitting projection 56 is formed outside the bottom surface.

The low melting point alloy 45 is filled in the cylinder 44. Low melting point alloys include Sn, Pb, Bi,
An alloy of In, Cd, etc., with a melting point of 72 ° C, 96
° C, 139 ° C, etc., and a material having a suitable melting point depending on the mounting location is appropriately selected.

The plunger 46 has a cylindrical shape whose diameter is slightly smaller than the inner diameter of the cylinder, and has a circular groove 57 at one end.

The fitting body 47 has a cylindrical shape, and a fitting hole 58 is formed at the center thereof so as to fit with the fitting projection 56 of the cylinder 44. One end of the fitting hole has a mortar-shaped engaging groove. 59
It has become.

The heat collecting plate 48 is in the form of a corrugated plate having its center in the vertical direction bent inward and both sides bent outward, and has a seat portion 60 formed at the lower end inside. Through hole 61 in the center bend
A mounting hole 62 having substantially the same diameter as the fitting projection 56 of the cylinder 44 is formed in the seat portion 60.

Here, the structure of the compression-sensitive pyrolysis part having the above structure will be described.

The hemispherical groove 52 of the movable piece 42 is engaged with the hemispherical tip of the tightening screw 16, and the end of the movable piece 42 is engaged with the engaging portion 55 of the balance 43. The V-shaped groove 53 of the movable piece 42 is engaged with one end of the column 41, and the other end of the column 41 is engaged with the V-shaped groove 21 of the valve body 20. Movable piece 4
The balance 43 engaged with the end of the support 2 is inserted through the hole 49 of the support 41, and the lower surface in FIG.
I'm on top.

An engagement groove 59 of the fitting body 47 is engaged with the engagement branch 50 of the support column 41. The fitting body 47 is a cylinder 44
Of the heat collecting plate 4 through the mounting hole 62 of the seat portion 60 between the fitting body 47 and the fitting projection 56.
8 are pinched. The heat collecting plate 48 is positioned so as not to cover the cylinder, that is, the rising portion of the heat collecting plate is in a direction opposite to the cylinder direction described later.

The cylinder 44 is filled with a low melting point alloy 45, and a plunger 46 is further inserted therein. In the circular groove 57 of the plunger 46, the balance 43 is inserted.
Are engaged with each other.

Next, a method of attaching the heat collecting plate to the sprinkler head will be described.

As shown in FIG. 6, when the heat collecting plate 48 is unfolded, a vertically long trapezoidal hole 61 is formed at the center, and a cut 63 is formed at the lower center. Both sides of the cut 63 are rectangular seats 60, 60.

First, the seats 60, 60 are bent at approximately 90 degrees in the same direction (alternate long and short dash line). Thereafter, the center in the vertical direction (vertical one-dot chain line) is bent approximately 100 degrees in the seat direction, and appropriate portions (chain lines) on both sides from the center are bent approximately 115 degrees in the direction opposite to the center bending. Two seats 6
0 and 60 overlap at the center bend. If the two seats overlap, a mounting hole 62 through which the fitting protrusion 56 can be easily inserted is formed substantially at the center of the seat. The mounting hole may be formed in advance at a position where the two mounting holes coincide when the center of the heat collecting plate is bent.

The heat collecting plate thus formed is attached to a cylinder before assembling the compression and thermal decomposition part. At this time, the mounting hole 62 of the heat collecting plate is inserted into the fitting projection 56 of the cylinder 44, and the fitting body 47 is fitted into the fitting projection, and is held between the cylinder 44 and the fitting body 47.

The operation of the sprinkler head of the present invention is as follows.
When the hot air stream of the fire reaches the sprinkler head mounting portion, the hot air stream efficiently heats the compression-sensitive pyrolysis section 40, particularly the large-area heat collecting plate 48. When the heat collecting plate 48 is heated, the heat of the heat collecting plate 48 is transmitted from the seat 60 to the cylinder 44 and from the cylinder 44 to the low melting point alloy 45. When the low melting point alloy 45 melts, the low melting point alloy 45 flows out of the gap between the cylinder 44 and the plunger 46 because the plunger 46 presses the low melting point alloy 45, and the plunger 46 is immersed in the cylinder 44. I do. Then, the balance 43 that has engaged the plunger 46 is inclined in the plunger direction, so that the engagement piece 55 of the balance and the movable piece 42 are disengaged, the movable piece 42 rotates, and all the compression and thermal decomposition parts Parts disassembled and fall down.

The valve body 20 held in the compression and thermal decomposition part is opened by the water pressure in the water supply hole 12 due to the falling of the compression and thermal decomposition part, and water is ejected from the water supply hole in a rod shape.
The rod-shaped water spouted from the water guide hole 12 hits the deflector 30 and is dispersed in all directions, and is uniformly scattered downward.

In the above-mentioned embodiment, the compression-sensitive pyrolysis part is shown as being composed of a column, a movable piece, a balance, a cylinder, a low melting point alloy, a plunger, etc. It goes without saying that any structure having a low melting point alloy or a plunger can be employed.

[0045]

As described above, in the sprinkler head of the present invention, since the heat collecting plate is mounted in parallel with the frame, not only does the appearance not deteriorate, but also the dust and dirt are removed. This is an excellent effect in terms of aesthetics and reliability that the heat collecting effect of the heat collecting plate is not impaired since the heat is not easily deposited. In addition, according to the method of attaching a heat collecting plate of the present invention, a cut is made in a lower portion of the heat collecting plate, and both sides of the cut are bent by 90 degrees in the same direction to form a seat. Since it is attached to the part, the strength of the part that rises from the seat part is very strong, and it is not easily deformed even by an external impact.

[Brief description of the drawings]

FIG. 1 is a front view of a sprinkler head of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a rear view of the sprinkler head of the present invention.

FIG. 4 is an enlarged sectional view of a main part.

FIG. 5 is a perspective view of a heat collecting plate.

FIG. 6 is a development view of a heat collecting plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main body 20 Valve element 30 Deflector 40 Compression-sensitive pyrolysis part 44 Cylinder 45 Low-melting-point alloy 46 Plunger 48 Heat collecting plate 60 Seat part 61 Hole 62 Mounting hole 63 Notch

Claims (7)

(57) [Claims] 1. A frame from the body protrudes, in the frame type sprinkler head compression thermal decomposition portion is disposed between the valve body and the frame of the body, the longitudinal direction of the frame
To form a heat collecting plate bent in parallel to the bottom of the heat collecting plate
Sprinkler head characterized in that attaching a seat provided in the compressed thermal decomposition portion. 2. The sprinkler head according to claim 1, wherein said heat collecting plate is mounted by engaging said seat with a cylinder of a compression and thermal decomposition part. 3. The sprinkler head according to claim 1, wherein said heat collecting plate is mounted by engaging said seat portion with a plunger of a compression and thermal decomposition portion. 4. The heat collecting plate is parallel to a longitudinal direction of the frame.
The sprinkler head according to claim 1, wherein the sprinkler head is bent in a wave form. 5. The sprinkler head according to claim 1, wherein a hole is formed in the center of the heat collecting plate. 6. The sprinkler head according to claim 1, wherein the heat collecting plate is mounted at a position not covering the cylinder. 7. A method of attaching a heat collecting plate to a compression and thermal decomposition portion of a frame type sprinkler head, wherein a short cut is formed in a longitudinal central portion of the heat collecting plate, and a portion divided by the cut is substantially 90%. After bending two degrees to form two seats, the central portion along the cutout is bent in the seat direction to overlap the two seats, and then the mounting hole of the seat is compressed and thermally decomposed. A method for mounting a heat collecting plate, wherein the heat collecting plate is mounted on a heat collecting plate.