Flush type sprinkler head

Abstract

To provide a sprinkler head that can prevent a sprinkler from being deformed and malfunctioning even when being installed obliquely or being subjected to impacts from the outside.SOLUTION: A sprinkler head includes: a body 10 including a water outlet in a center thereof; an inner loading plate 110 for opening and closing the water outlet; an outer loading plate 120 connected to the inner loading plate 110; a frame 20 for supporting an outer flange part 121 on a lower side of a sidewall including a number of jetting holes and supporting the outer loading plate 120; a retainer ring 140 for maintaining a closed state of the water outlet; and a fuse metal 150 and a heat collector 160 installed together in a lower part of the outer loading plate 120. The sprinkler head prevents any damage due to malfunction or water leakage and is formed so that a surface of a valve cap 113 becomes horizontal with a curved height of a spring seat 170.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a flush-type sprinkler head, and more particularly, to a flush-type sprinkler head that, when a sprinkler is installed at an angle on a ceiling or wall, or when an external impact is applied to the head, prevents deformation or malfunction of the sprinkler by stabilizing the support force of the assembly from the inner loading plate installed on the frame to the heat collector, increases the sealing force of the outlet, and, in the event of a fire, opens the outlet more quickly and stably opens all of the spray holes, thereby quickly extinguishing the fire. [Background technology]

[0002] Generally, sprinklers are divided into fire extinguishing equipment installed on the ceilings of buildings in preparation for fires, and equipment installed to automatically supply water to crops and fruit trees cultivated on the ground in farms and orchards.

[0003] Among these, fire sprinkler systems, which spray firewater to initially extinguish a fire when it breaks out, automatically detect and extinguish the fire when it breaks out, and also have an alarm function and excellent fire-extinguishing performance. Therefore, the Fire Service Act stipulates that they must be installed in large buildings where many people gather, such as department stores, markets, hotels, and hospitals.

[0004] The sprinkler system is roughly classified into a closed wet system, a dry system, and a deluge system according to the operation method, and into a standard response type and a fast response type according to the response speed.

[0005] These sprinklers are designed to automatically activate when the temperature near the ceiling rises above a certain level in the event of a fire, but the type of sprinkler head, its location, and the level of waterproofing are regulated by the extinguishing method depending on the type of building and the level of interior decoration.

[0006] However, with conventional flush-type sprinkler heads, even if the fuse metal melts during a fire and the inner loading plate, outer loading plate, retaining ring, and heat collector come off the frame, the deflector and assembly that close the water outlet of the body are inherently lightweight, making it difficult to quickly lower them from the body.In addition, when installed at an angle, the deflector and assembly may tilt or close off some of the spray space, making it difficult to spray firewater evenly in all directions.

[0007] Furthermore, if the ceiling surface on which the sprinkler head is installed is inclined, the deflector cannot descend vertically, but will instead descend tilted to one side, creating a fatal problem in that firewater cannot be sprayed evenly in all directions.

[0008] In addition, the neck portion of the body (the portion that fits into the deflector) is long, and the heat collector is exposed to the outside of the frame for a long period of time, which detracts from the appearance when installed on the ceiling.

[0009] In addition, the deflector strikes the inner loading plate installed in the frame's housing space with great force, causing the inner loading plate + outer loading plate + heat collector assembly to separate from the frame's housing space and fall, posing a major problem of damage to human lives and facilities caused by the falling parts.

[0010] Prior art that solves these problems with conventional sprinkler heads is the "Flush-type sprinkler head" (hereinafter referred to as the "prior art"), disclosed in Korean Patent Registration No. 10-0809627 (published on March 5, 2008) in the following Patent Document 1.

[0011] In the prior art, when the outer loading plate descends in response to the heat collector, the valve cap, together with the inner loading plate formed integrally with it, is engaged with the step of the frame to prevent it from falling, thereby eliminating damage to human life and facilities caused by falling parts, and attempting to quickly extinguish the fire by spraying firewater through the water outlet.

[0012] Furthermore, since the assembly is carried out with a considerable space between the step at the lower end of the frame that supports the upper inclined surface (flange) of the outer loading plate and the outer peripheral surface of the lower end of the outer loading plate, it can be said that the assembly from the inner loading plate to the heat collector is supported at only one point by the retainer ring.

[0013] In a structure supported only by one point on the retainer ring as described above, when the sprinkler head is installed at an angle on a wall, the assembly from the inner loading plate to the heat collector can easily tilt due to its own weight or due to external impact, causing the retainer ring to easily come off the ring locking portion, weakening the sealing force of the water outlet, which can lead to water leakage, unwanted water spraying, and water damage.In addition, when water leaks due to a fire, the inner flange tilts and falls, blocking some of the spray holes, causing uneven water spray in all directions, which reduces the fire suppression effect.

[0014] Furthermore, there is a problem that the sealing force of the water outlet is reduced due to the retainer ring being supported at one point, and therefore the sprinkler head cannot pass the external impact strength test in accordance with the Fire Service Act, in which an impact is applied to the lower end of the sprinkler head. [Prior art documents] [Patent documents]

[0015] [Patent Document 1] Korean Patent No. 10-0809627 (Announced on March 5, 2008) "Flush-type sprinkler head" Summary of the Invention [Problem to be solved by the invention]

[0016] The present invention has been proposed to solve the above-mentioned problems occurring in the conventional and prior art.

[0017] The object of the present invention is to prevent deformation or malfunction of the sprinkler by stabilizing the supporting force of the assembly from the inner loading plate to the heat collector, which is assembled and mounted within the frame, even when the sprinkler is installed at an angle or subjected to external impact, and to increase the sealing force of the outlet.

[0018] Another object of the present invention is to open the water outlet more quickly in the event of a fire and to stably open all of the injection holes on the four sides of the frame. [Means for solving the problem]

[0019] To achieve the above object, the flush type sprinkler head of the present invention comprises: a body having a central water outlet; an inner loading plate having an inner flange portion for opening and closing the water outlet at its upper end, a screw coupling portion at its lower end, and a valve cap on the upper surface of which a spring seat is fitted; an outer loading plate having an outer flange portion at its upper end and coupled to the inner loading plate by a locking screw to operate together; an upper spiral coupling portion coupled to a spiral recess of the body, having a ring locking groove on the inner surface, and an outer spiral coupling portion at the lower end of a lower wall having a number of spray holes. It is characterized by an improved structure that includes a frame equipped with a flange support portion that supports the flange portion; a retainer ring of a primary support portion that is installed between the opposing frame inclined surfaces of the inner flange portion and the outer flange portion and the ring locking groove and keeps the water outlet closed; and a fuse metal and heat collector that are installed together under the outer loading plate with a locking screw, with the flange support portion being as close to or in contact with the outer loading plate as possible, thereby significantly improving the overall supporting force from the spring seat to the outer loading plate and heat collector.

[0020] The body is provided with a seat mounting portion on the underside of the water outlet port on which the spring seat is placed, and an auxiliary support portion is formed on the frame surface of the inner flange portion to protrude and cover the outer peripheral surface of the seat mounting portion.

[0021] The body has a recessed portion at a position facing the auxiliary support portion, and an elastic member of the auxiliary support portion is installed in the recessed portion, so that the inner loading plate is quickly operated when the negative pressure is released.

[0022] The surface of the valve cap onto which the spring seat is fitted is formed approximately horizontally to the height of the curve of the spring seat. [Effects of the Invention]

[0023] According to the present invention, when the sprinkler head is installed at an angle or when an external impact is applied, the assembly from the inner loading plate to the heat collector, which is assembled and mounted within the frame, can maintain the installation angle as is thanks to the multiple supports, thereby stably maintaining the sealing force of the outlet and greatly improving the prevention of damage caused by malfunctions and water leakage.

[0024] In addition, due to the action of the auxiliary support part and elastic member protruding from the frame of the inner flange part, the water outlet can be opened as quickly as possible in the event of a fire, and all four injection holes on the frame can be opened to their maximum capacity, which has the effect of increasing the efficiency of fire suppression.

[0025] Furthermore, in the event of a fire, fire water can be sprayed farther and more evenly than with existing systems, so if special provisions are in place, the number of sprinkler heads installed can be reduced, which has the effect of saving on construction costs. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a cross-sectional view showing an example of the structure of a sprinkler head in which the present invention is implemented. [Figure 2] FIG. 2 is a cross-sectional view showing the operating state of the sprinkler head of FIG. 1. [Figure 3] FIG. 2 is a diagram showing the sprinkler head of the present invention installed in an inclined position. [Figure 4] FIG. 10 is a plan view showing an elastic member installed in the head of the present invention as a plate spring. DETAILED DESCRIPTION OF THE INVENTION

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A flush-type sprinkler head according to a preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] The terms and words used in the present invention described below should not be interpreted limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept that is consistent with the technical idea of ​​the present invention, based on the principle that an inventor can appropriately define the concept of a term in order to best describe his or her invention.

[0029] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and that there may be various equivalents and modifications that can replace them at the time of filing this application.

[0030] FIG. 1 is a cross-sectional view showing an example of the structure of a sprinkler head to which the present invention is applied, and FIG. 2 is a cross-sectional view showing the operating state of the sprinkler head of FIG.

[0031] The flush-type sprinkler head of the present invention shown in the drawings is characterized by comprising a body 10, an inner loading plate 110, an outer loading plate 120, a frame 20, a retainer ring 140, a fuse metal 150, and a heat collector 160.

[0032] The body 10 has a water outlet 11 at the center and a spiral recess 12 at the bottom, and a branch pipe of the secondary piping that supplies fire water to the water outlet 11 is connected to the upper spiral portion.

[0033] The inner loading plate 110 has an inner flange portion 111 on the upper side that opens and closes the water outlet 11, and a screw coupling portion 112 on the lower side. A valve cap 113 into which a spring seat 170 is fitted is provided on the upper surface of the inner flange portion 111, and a tool groove 114 into which a tool can be inserted is formed in the center of the surface of the valve cap 113, so that a tool can be used when coupling with the locking screw 130.

[0034] The outer loading plate 120 has an outer flange portion 121 at its upper end, which is placed below the inner flange portion 111, and is connected to the outside of the lower part of the inner loading plate 110 by a locking screw 130 connected to a screw connecting portion 112, so that they operate together.

[0035] The frame 20 has a ring locking groove 22 formed on the inner surface of an upper spiral fastening portion 21 that is coupled to the spiral recess 12 of the body 10, and a flange support portion 24 that supports the outer flange portion 121 at the lower end of the lower wall where a number of injection holes 23 are formed.

[0036] The retainer ring 140 is installed between the inclined frame surfaces of the inner flange portion 111 and the outer flange portion 121 and the ring locking groove 22 of the frame 20, and serves as a primary support part to keep the inner flange portion 111 in a closed state of the water outlet 11.

[0037] The plurality of heat collectors 160 are installed together under the outer loading plate 120 by locking screws 130 fastened to the inner loading plate 110, and the fuse metal 150 is installed between the head of the locking screw 130 and the heat collector 160.

[0038] In the sprinkler head of the present invention, a number of heat collectors 160 protrude from the bottom surface of the frame 20. When a fire breaks out, the heat of the flames is quickly transferred to the fuse metal 150. When the fuse metal 150 melts, the force supporting the space is released. The assembly from the inner loading plate 110 to the heat collector 160 is lowered by the spring force of the retaining ring and the firefighting water pressure of the outlet 11, and while it is held by the flange support part 24, the fire is extinguished by the firefighting water that is discharged through the open injection holes 23 of the frame 20.

[0039] Here, the flange support portion 24 of the frame 20 has been modified in structure to be as close as possible to or in contact with the outer peripheral surface of the outer loading plate 120, thereby improving the support force significantly and forming a secondary support portion that supports the lower end of the outer loading plate 120.

[0040] Therefore, due to the improved support force in which the upper side is primarily supported by the retainer ring 140 and the lower side is secondarily supported by the extended flange support portion 24, even if the head is installed at an angle as shown in FIG. 3 or is subjected to external impact, the assembly from the inner loading plate 110 to the heat collector 160 does not sag to one side or undergo positional deformation, so that the original installation state can be firmly maintained without causing malfunctions or water leakage problems.

[0041] Here, the underside of the water outlet 11 of the body 10 is provided with a seat mounting portion 13, which is a key part on which the spring seat 170 is placed, and an auxiliary support portion 115 covering the outer peripheral surface of the seat mounting portion 13 can be provided on the frame surface of the inner flange portion 111, protruding by a predetermined height as a tertiary support portion.

[0042] Therefore, due to the multiple support effect of the primary to tertiary support parts, the assembly from the inner loading plate 110 to the heat collector 160 can be maintained in a more solid installation state, and even if the sprinkler head is installed at an angle or receives a strong external impact, there is no risk of malfunction or damage due to water leakage caused by structural deformation.

[0043] The body 10 has a recess 14 at a position facing the auxiliary support portion 115 of the inner flange portion 111, and an elastic member 180 that is pressed and compressed by the auxiliary support portion 115 during setting can be installed in the recess 14.

[0044] The elastic member 180 may be implemented as a coil spring, or as shown in FIG. 4, may be formed as a leaf spring with a cutout so that the elastic portion is positioned at a predetermined height.

[0045] Therefore, when negative pressure caused by a fire is released, the downward movement of the inner loading plate 110 can be accelerated more quickly by the elastic force of the elastic member 180, so that the water outlet 11 can be opened as quickly as possible, and the efficiency of early fire suppression can be improved by rapid spraying of fire water.

[0046] When the assembly from the inner loading plate 110 to the heat collector 160 descends due to the fire water pressure from the outlet 11 caused by the release of negative pressure due to a fire, the outer surface of the frame of the outer loading plate 120 descends with the outer surface supported by the flange support portion 24.

[0047] Therefore, the outer flange portion 121 can descend vertically inside the frame 20 and is stably engaged with the flange support portion 24, so that the number of injection holes 23 formed on the outer periphery of the frame 20 can all be opened, and the amount of fire water flowing out on all sides becomes uniform, thereby improving the efficiency of fire suppression.

[0048] Here, it is preferable that the surface of the valve cap 113 provided on the upper surface of the inner flange portion 111 is formed to be horizontal with respect to the curved height of the spring seat 170 .

[0049] Therefore, after the fire water that flows out vertically from the water outlet 11 hits the flat surface of the valve cap 113, it does not hit the spring seat 170, which is horizontal to the surface of the valve cap 113, and flows smoothly in a horizontal state through the four injection holes 23 at the same time without any resistance, so that the water can be discharged farther from the center of the head, and the water discharge radius distance can be further increased compared to conventional methods.

[0050] As an example, in Japan, where there is a special clause for water distribution, the water distribution radius of the early response type is "r2.6", while this application is capable of watering further away, satisfying the special clause, for example, water can be distributed up to "r2.8, r3.0".

[0051] Therefore, if the special provisions are permitted, the installation intervals of sprinkler heads can be increased, which reduces the number of sprinkler heads to be installed, thereby reducing the costs of main and secondary piping materials and products, and is expected to have the effect of reducing construction time and costs.

[0052] The invention made by the inventor has been specifically described above using the above-mentioned examples, but it will be obvious to those skilled in the art that the present invention is not limited to the above-mentioned examples and can be modified in various ways without departing from the gist of the invention. [Explanation of symbols]

[0053] 10 Body 11 Water outlet 12 Spiral recess 13 Sheet placement section 14 Otoribe 20 frames 21 Spiral fastening part 22 Ring locking groove 23 Injection hole 24 Flange support 110 Inner Loading Plate 111 Inner flange 112 Screw joint 113 Valve Cap 115 Auxiliary support part 120 outer loading plate 130 Locking Screw 140 Retainer ring 150 Fuse Metal 160 Heat Collector 170 spring seat 180 Elastic member

Claims

1. A body (10) having a central water outlet (11) and a spiral recess (12) at its lower end; an inner loading plate (110) having an inner flange portion (111) on the upper side for opening and closing the water outlet (11), a screw connection portion (112) on the lower side, and a valve cap (113) on the upper surface of which a spring seat (170) is fitted; an outer loading plate (120) having an outer flange portion (121) at its upper end, which is placed under the inner flange portion (111), and which is connected to the inner loading plate (110) by a locking screw (130) so as to operate together with the inner loading plate (110); a frame (20) in which a ring locking groove (22) is provided on the inner surface of an upper spiral fastening portion (21) coupled to the spiral recess (12) of the body (10), and a flange support portion (24) is provided so as to be in maximum proximity to or in contact with the outer loading plate (120) on the lower side of a side wall having a number of injection holes (23), and has a function of supporting the outer flange portion (121) and a function as a secondary support portion supporting the lower end of the outer loading plate (120); A retainer ring (140) that is installed between the opposing inclined frame surfaces of the inner flange portion (111) and the outer flange portion (121) and the ring locking groove (22) and functions as a primary support portion that maintains the water outlet (11) in a closed state; and A fuse metal (150) and a heat collector (160) are installed together under the outer loading plate (120) by a locking screw (130); The primary support of the retainer ring (140) and the secondary support of the flange support part (24) improve the support force against external impacts, preventing damage caused by malfunctions or water leakage. The surface of the valve cap (113) on which the spring seat (170) is fitted is made to be at the same height as the upper end of the spring seat (170) which is installed in an inclined state, and the surface of the valve cap (113) and the upper end of the spring seat (170) are formed to be horizontal. This flash type sprinkler head is characterized in that when firefighting water is sprayed to suppress a fire, the water hits the upper surface of the valve cap (113) and is sprayed horizontally without resistance from the spring seat (170), thereby increasing the spray radius distance.

2. The body (10) has a seat placement section (13) on the underside of the water outlet (11) of the body (10) where a spring seat (170) is placed. An auxiliary support portion (115) is formed on the frame surface of the inner flange portion (111) so as to protrude and cover the outer peripheral surface of the sheet placing portion (13), 2. The flush-type sprinkler head according to claim 1, wherein the assembly from the inner loading plate (110) to the heat collector (160) is prevented from being deformed by the multiple support parts.

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