WO2018106048A1

WO2018106048A1 - Device for preventing deformation of spring seat for sprinkler head

Info

Publication number: WO2018106048A1
Application number: PCT/KR2017/014338
Authority: WO
Inventors: 오주환
Original assignee: 주식회사 마스테코
Priority date: 2016-12-09
Filing date: 2017-12-07
Publication date: 2018-06-14
Also published as: KR101773098B1

Abstract

The present invention relates to a device for preventing deformation of a spring seat for a sprinkler head installed on a ceiling so as to scatter a fire-extinguishing liquid in four directions when a fire occurs such that it is possible to fundamentally prevent water leakage caused by deformation of the spring seat due to excessive fastening in the process of assembling the sprinkler head. To this end, the present invention is characterized in that, in connection with assembling a spring seat (3) in a concave groove (2c) formed on an orifice portion (2b) of a body (2) and pressurizing the spring seat (3) by the orifice portion (2b) such that the assembly load of the spring seat (3) is adjusted, the height (H) of the orifice portion of the body (2) is set to be larger than the height (h) from the upper surface of a deflector (20), the concave groove (2c) formed on the orifice portion (2b) has a depth (d) at which the maximum effective load of the spring seat (3) has a maximum value when the head (100) is assembled such that the bottom surface of an inner loading plate (9) abuts the bottom surface of the deflector (20), and an upward protruding ledge (9a) is formed on the upper surface of the inner loading plate (9) so as to have a size smaller than the inner diameter of a water discharge opening (2a) such that the upward protruding ledge (9a) is connected to the bottom surface of the deflector (20).

Description

Spring Seat Strain Relief for Sprinkler Head

The present invention relates to a sprinkler head installed on the ceiling to sprinkle extinguishing fluid in all directions when a fire occurs. More specifically, the sprinkler head is leaked due to deformation of the spring sheet due to excessive fastening in the process of assembling the sprinkler head. It relates to a spring seat deformation preventing device for the sprinkler head to fundamentally solve the problem.

In general, sprinkler equipment is used to extinguish the fire by using extinguishing liquid at the time of fire, and it automatically detects and extinguish the fire at the same time. Many people, such as hospitals, are mandatory to install in large-scale buildings.

The sprinkler system is roughly classified into a wet system, a dry system, and a deluge system according to a method of operation, and is classified into a standard response type and an early response type according to the response speed.

The sprinkler is designed to operate automatically when the temperature near the ceiling rises above a certain temperature due to a fire, but the types of sprinkler heads, the attachment location, and the amount of waterproofing are regulated according to the type of building and the degree of interior. have.

1 and 2 are longitudinal cross-sectional views showing a conventional flush type sprinkler head, in which a water outlet (2a) is formed at the center of the body (2) screwed to the branch pipe (1), the normal state on the bottom of the body The deflector (4) for closing the outlet port in the air is installed while maintaining the airtight by the spring sheet (3), the outer space of the deflector (4) is formed with a spray space (4a) and the lower center of the set screw (5) ) Is screwed in.

At this time, the Teflon (not shown) is coated on the surface of the spring sheet 3 for closing the flow path of the water outlet 2a to maintain airtightness.

Frame 6 is screwed to the body 2, the inner peripheral surface of the through hole formed in the lower center of the frame 6 is shallower than the radius of the retaining ring (7) An accommodation space 8 with an inclined surface is formed.

Directly below the deflector 4 is provided with an inner loading plate 9 for applying a load to the retaining ring 7 in which the flange is located in the receiving space 8 as the set screw 5 rotates. A portion of the retaining ring 7 is accommodated directly below the loading plate 9, and then the outer loading plate 10, which is separated from the frame 6 together with the retaining ring 7 in the event of a fire, is installed in sequence. have.

In addition, a heat collector 11 including a plurality of heat collectors 11 is installed under the outer loading plate 10 so as to quickly react to heat during a fire, and lead (Pb) is disposed inside the heat collectors located at the lowermost of the heat collectors. The fuse metal 12 which consists of the main component is installed, and the outer loading plate 10 and the heat collector 11 are integrated by the locking screw 13. As shown in FIG.

In the state in which the sprinkler head is assembled as shown in FIG. 1, the retaining ring 7 is located in the receiving space 8 of the frame 6 so that the inner loading plate 9 and the outer loading integrated by the locking screw 13 are provided. Since the plate 10 and the heat collector 11 are not separated from the frame 6 and the outlet port 2a is closed by the spring sheet 3, the digestive fluid is not sprinkled.

In this state, if the heat collector 11 receives heat and melts the fuse metal 12 in the process of causing a fire in the building to move heat along the ceiling surface due to convection, the outer loading plate 10 may fuse the fuse metal. The retaining ring 7 located between the inner loading plate 9 and the outer loading plate 10 is retracted by the restoring force because it is released from the inner loading plate 9 while descending by the height of. The outer loading plate 10 and the heat collector 11, which are located directly below the inner loading plate 9, are freely dropped as shown in FIG. 2 to be separated from the frame 6.

After the inner loading plate 9, the outer loading plate 10, the retaining ring 7 and the heat collector 11 are separated from the frame 6 as shown in FIG. 2, the outlet 2a of the body 2 is removed. The deflector 4 holding the spring seat 3 positioned in the column is freely dropped downward by its own weight to open the outlet port 2a over the lower end of the frame 6, so that the high pressure extinguishing liquid is discharged through the outlet port 2a. Then, the deflector 4 hits, and thus the extinguishing liquid is sprayed in all directions evenly through the injection space 4a formed in the deflector 4 to extinguish the fire.

In the sprinkler that operates as described above, the integrated deflector 20 was developed and filed as 10-2014-0175207.

That is, as shown in FIG. 3, the upper projection 21 is formed at the lower center of the spring sheet 3, and a plurality of upwardly curved portions 22 are vertically formed such that the injection space 22a is formed above the outer circumferential surface. The deflector 20 is formed in a ring shape so that the outward bent portion 23 is connected by three vertical bars 24.

Therefore, when the integrated deflector 20 freely falls downward due to the fire, and the outward bent portion 23 formed on the upper part of the deflector 20 hangs over the lower end of the frame 6, the high pressure fire extinguishing liquid opens the outlet 2a. Since the extinguishing liquid is ejected through the injection space 22a formed in the deflector 20 because it is discharged through and hits the inner upper surface of the deflector 20, the fire is suppressed.

In the conventional deflector 20, as illustrated in FIG. 3, the spring sheet 3 is assembled to the upper surface of the upward bent portion 21 so that the upper surface of the inner loading plate 9 is connected to and supported by the lower surface of the deflector 20. In the cylindrical orifice portion (2b) formed in the lower center of the body (2) is formed a recessed groove (2c) for the spring sheet 3 is assembled to assemble the deflector 20 in the body (2) cylindrical orifice portion 2b maintains the deflector 20 with a predetermined interval s.

Therefore, when the assembly of the head is completed and the set screw 5 is pressed to press the inner loading plate 9, the spring seat 3 mounted on the upward protrusion 21 is pressed by the orifice part 2b, and thus the spring seat. (3) takes the assembly load

(Prior art document)

(Patent Document 0001) Republic of Korea Patent Registration No. 10-0809627 (2008.02.26. Registration)

(Patent Document 0002) Korean Laid-Open Patent Publication No. 10-2016-0069352 (Published June 16, 2016)

However, in the conventional head having such a structure, the spring seat 3 mounted on the upward protrusion 21 and subjected to the assembly load is assembled in the recessed groove 2c formed in the orifice portion 2b of the body 2, and the body The orifice portion 2b of (2) maintains a predetermined distance s from the bottom of the deflector 20, and inadvertently adjusts the assembly load of the spring seat 3 when the head is assembled. 6) or excessively tightening the set screw 5, the Teflon coated on the surface of the spring sheet 3 is torn, or the spring sheet 3 is deformed, so there is a fatal defect in which leakage occurs.

The same phenomenon occurs in the bulb type sprinkler head.

In addition, even when the spring sheet 3 is assembled with the prescribed load, when the vibration or shock caused by an earthquake or the like is applied to the spring sheet 3, the spring sheet 3 is overloaded, so that the Teflon is torn. .

The present invention has been made to solve such a problem in the prior art, and the object of the present invention is to improve the structure of the body and deflector so that the assembly load of the spring sheet can be kept constant even if the unskilled workers assemble the head. .

Another object of the present invention, the construction work of the sprinkler, or even when the head is installed, even if the head is overloaded by an external force to absorb the shock applied to the deflector does not damage the Teflon of the spring sheet To help prevent that.

According to an aspect of the present invention for achieving the above object, in assembling the spring sheet in the recess groove formed in the orifice portion of the body to press the spring sheet by the orifice portion to adjust the assembly load of the spring sheet, The height of the orifice portion is set higher than the height from the upper surface of the deflector, and the depth of the indentation groove formed in the orifice portion is such that the bottom surface of the inner loading plate touches the frame so that the bottom of the orifice portion of the body and the upper surface of the deflector touch the bottom of the deflector. When assembling the head so that the maximum effective load of the spring sheet is set to a depth that is the maximum value, and the upper projection jaw (9a) is formed on the upper surface of the inner loading plate (9) to a size smaller than the inner diameter of the outlet (2a) Spring for sprinkler head, characterized in that the upward projection jaw (9a) is connected to the bottom of the deflector 20 A sheet deformation preventing device is provided.

An upward protrusion is formed on the upper surface of the inner loading plate to a size smaller than the inner diameter of the outlet so that the upward protrusion is connected to the bottom of the deflector, so that vibration is applied to the building by an earthquake or the like in the state where the sprinkler head is installed. The deflector acts as a spring while being slightly deformed by the upwardly projecting jaw even when the load is heavy, thereby absorbing shock.

The depth of the recessed groove formed in the orifice portion is preferably at least the thickness of the spring sheet, more preferably, the depth of the recessed groove formed in the orifice portion is 1.2 to 1.5 times the thickness of the spring sheet.

Accordingly, the head can be assembled while maintaining the assembling load of the spring sheet even in unskilled holes.

The present invention has several advantages over the conventional sprinkler heads as follows.

First, in the process of assembling the sprinkler head, even if the upper surface of the inner loading plate touches the bottom of the deflector by pushing the deflector upwards by tightening the frame or set screw, the bottom of the orifice part touches the top of the deflector so that the spring seat installed in the recess groove is more. Since it is not deformed abnormally, even if it is an unskilled hole, the assembly load can be assembled uniformly so that the maximum effective load of the spring seat is always the maximum value.

Secondly, since the upward protrusion is formed on the upper surface of the inner loading plate, the shock is generated at the deflector by the upward protrusion when the external force is applied to the sprinkler head, thereby essentially eliminating the damage to the spring sheet. Done.

Third, by adjusting the depth of the recess groove formed in the orifice portion of the body it is possible to adjust the assembly load on the spring seat, thereby making it easier to adjust the assembly load of the spring seat.

1 and 2 are vertical cross-sectional view showing a conventional flush type sprinkler head

3 is an exploded cross-sectional view showing a conventional deflector

4 is a longitudinal sectional view of a deflector equipped with a device of the present invention;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. It is noted that the figures are schematic and not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting. And the same reference numerals are used to refer to similar features in the same structure, element or part shown in more than one figure.

4 is a longitudinal sectional view of the deflector equipped with the apparatus of the present invention, the present invention is different from the conventional deflector of the orifice height H of the body 2, the outlet 2a is formed in the center of the deflector 20 The depth d of the recessed groove 2c formed at the lower end of the orifice portion 2b and set higher than the total height h from the upper surface is the bottom of the orifice portion 2b of the body 2 and the deflector 20. The spring seat installed in the recess 2c of the orifice part 2b is set to a depth such that the maximum effective load of the spring seat 3 becomes the maximum value when the frame 6 is assembled to the body 2 so that the upper surface touches it. (3) is prevented from being over-deformed.

The depth d of the recessed groove 2c formed in the orifice portion 2b is formed to be greater than or equal to the thickness of the spring sheet 3, and the depth (d) of the recessed groove 2c formed in the orifice portion 2b It is preferable to set d) 1.2-1.5 times the thickness of the spring seat 3.

At this time, the deeper the depth (d) of the recessed groove (2c) formed in the orifice portion (2b), the lower the effective load applied to the spring sheet 3, according to the effective load applied to the spring sheet (3) It is to be understood that the depth d of the recess 2c should be appropriately designed.

An upward projection jaw 9a is formed on an upper surface of the inner loading plate 9 so that the upward projection jaw 9a is connected to the bottom surface of the deflector 20.

Accordingly, even when the sprinkler head of the present invention is constructed or the construction is applied, the deflector 20 is upwardly projected even when the head is impacted or the vibration is applied to the building due to an earthquake or the like. Deformed by (9a) and acts as a spring to absorb the shock.

Hereinafter, the operation of the present invention will be described.

First, when the deflector 20 is assembled to the body 2 in a state in which the spring sheet 3 is seated on the upwardly protruding portion 21 formed on the deflector 20, the desputter 20 is placed on the upwardly protruding portion 21 of the deflector 20. The existing spring sheet 3 is accommodated in the recessed groove 2c of the orifice portion 2b.

At this time, the spring seat 3 accommodated in the recess 2c of the orifice portion 2b does not take assembly load.

In this state, the retainer ring 7 is assembled around the outer circumferential surfaces of the inner loading plate 9 and the outer loading plate 10 to the frame 6, and then the frame 6 is screwed to the body 2.

As described above, if the frame 6 is tightened in the process of screwing the frame 6 to the body 2, the upper surface of the inner loading plate 9 contacts the bottom of the deflector 20 to raise the deflector 20. The spring sheet 3 accommodated in the recess 2c of the orifice portion 2b is pressed and compressed by the recess 2c to apply the assembly load to the spring sheet 3.

As described above, the assembling load applied to the spring seat 3 by tightening the frame 6 is increased by the inner loading plate 9 so that the deflector 20 is raised so that the upper surface of the deflector 20 is the orifice portion 2b. Until it reaches the bottom.

Accordingly, the deflector 20 does not rise any more even if the unskilled hole excessively tightens the frame 6, so that the assembling load on the spring seat 3 is kept constant, as well as excessive deformation of the spring seat 3. Accordingly, the phenomenon in which the Teflon 3a coated on the surface is torn is prevented in advance.

In addition, when vibration or shock is applied to the head in the state in which the head 100 of the present invention is installed, the upward protrusion 9a formed on the upper surface of the inner loading plate 9 is smaller than the inner diameter of the outlet 2a is a deflector ( Teflon 3a coated on the surface of the spring sheet 3 because the deflector 20 is absorbed while the deflector 20 is displaced by the width according to the vibration within the height range of the upward protrusion 9a. This will prevent tearing.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features. will be.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention described in the above detailed description is represented by the following claims, and the meanings of the claims and All changes or modifications derived from the scope and the equivalent concept should be construed as being included in the scope of the present invention.

[Description of the code]

2: body 2a: water outlet

2b: Orifice part 2c: Concave groove

3: spring seat 6: frame

7: retainer ring 9: inner loading plate

9a: upward protrusion 10: outer loading plate

20: deflector 20a: upward projection

H: height of the orifice portion h: height from the upper surface of the deflector

d: depth of recessed groove

Claims

Assemble the spring seat 3 in the recessed groove 2c formed in the orifice portion 2b of the body 2 and press the spring seat 3 by the orifice portion 2b to reduce the assembly load of the spring seat 3. In adjusting, the height (d) of the orifice portion (2) of the body (2) is set higher than the height (h) from the upper surface of the deflector (20) and the depth (d) of the recessed groove (2c) formed in the orifice portion (2b) ) Is the depth at which the maximum effective load of the spring seat 3 becomes the maximum when the frame 6 is assembled to the body 2 such that the bottom face of the orifice portion 2b of the body 2 and the top surface of the deflector 20 come into contact with each other. Set to the upper surface of the inner loading plate 9 to form an upward projection (9a) smaller than the inner diameter of the water outlet (2a) so that the upward projection (9a) is connected to the bottom of the deflector 20 Spring seat deformation preventing device for sprinkler head, characterized in that.
The method according to claim 1,

Depth preventing device for a sprinkler head, characterized in that the depth (d) of the recessed groove (2c) formed in the orifice portion (2b) is formed more than the thickness of the spring sheet (3).
The method according to claim 2,

Sprinkler head spring seat deformation preventing device, characterized in that the depth (d) of the recessed groove (2c) formed in the orifice portion (2b) is 1.2 to 1.5 times the thickness of the spring sheet (3).
The method according to claim 1,

Spring strain deformation preventing device for a sprinkler head, characterized in that integrally formed in the central portion of the deflector 20, the spring protrusion (3) is mounted upwardly projecting portion (21).