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 impact is applied to the head from the outside, prevents deformation or malfunction of the sprinkler by stabilizing the supporting force of an assembly from an inner loading plate to a heat collector installed on a frame, increases the sealing force of the water outlet, and, in the event of a fire, opens the water outlet more quickly and stably opens all of the injection holes, thereby enabling the fire to be extinguished early and quickly. [Background technology]

[0002] Generally, sprinklers are divided into fire extinguishing equipment that is installed on the ceiling of a building in preparation for the outbreak of a fire, and equipment that is installed to automatically supply water to crops and fruit trees cultivated on the ground in farms, orchards, etc.

[0003] Among these, fire sprinkler systems, which spray fire water to initially contain a fire when it occurs, automatically detect and extinguish the fire when it occurs, 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 reaction type and a fast reaction 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 attachment position, and the amount of waterproofing are regulated by the extinguishing method depending on the type of building and the level of interior decoration.

[0006] However, in conventional flush-type sprinkler heads, even if the inner loading plate, outer loading plate, retaining ring, and heat collector become detached from the frame as the fuse metal melts during a fire, the deflector and assembly that closed the water outlet of the body were originally lightweight and therefore difficult to quickly lower from the body. Furthermore, when installed at an angle, the deflector and assembly would tilt or close some of the spray space, making it difficult to evenly spray fire water 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 descend tilted to one side, causing the fatal problem that fire water 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 a large portion of the heat collector is exposed outside the frame, which detracts from the appearance when installed on the ceiling.

[0009] In addition, the deflector strongly strikes the inner loading plate installed in the frame's housing space, causing the inner loading plate + outer loading plate + heat collector assembly to detach 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] As a prior art for solving such problems with conventional sprinkler heads, there is a “Flash-type sprinkler head” disclosed in Korean Patent Registration No. 10-0809627 (announced on March 5, 2008) (hereinafter referred to as the “prior art”), which is disclosed 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 them from falling, thereby eliminating damage to human life and facilities caused by falling parts, and also aims to extinguish the fire quickly by spraying fire water through the water outlet.

[0012] Furthermore, since the assembly is performed 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 the structure supported only at one point by 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 part, reducing the sealing force of the water outlet, which can cause water leakage or undesired water spraying, resulting in water damage. Also, when water leaks due to a fire, the inner flange tilts and falls, blocking some of the spray holes, which reduces the fire suppression effect due to uneven water spraying in all directions.

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

[0015] [Patent Document 1] Republic of Korea Patent No. 10-0809627 (Announced on March 5, 2008) "Flash-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 a sprinkler by stabilizing the supporting force of an assembly from an inner loading plate to a heat collector, which is assembled and mounted within a frame, even when the sprinkler is installed at an angle or subjected to external impact, and to increase the sealing force of the water 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] In order to achieve the above object, the present invention provides a flash type sprinkler head, comprising: a body having a water outlet at the center; an inner loading plate having an inner flange portion for opening and closing the water outlet at its upper side, a screw coupling portion at its lower side, 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; and an upper spiral fastening portion coupled to a spiral recess of the body, the inner surface of which is provided with a ring locking groove, and an outer spiral fastening portion at the lower end of a lower wall having a number of spray holes. The device includes a frame having 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 maintains the water outlet in a closed state; and a fuse metal and a heat collector that are installed together under the outer loading plate with a locking screw. The flange support portion is formed in an improved structure by bringing the flange support portion as close as possible to or in contact with the outer loading plate, thereby significantly improving the integrated supporting force from the spring seat to the outer loading plate and the heat collector.

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

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

[0022] In addition, the surface of the valve cap into which the spring seat is fitted is formed substantially horizontally to the height of the curve of the spring seat. Effect of the Invention

[0023] According to the present invention, when the sprinkler head is installed at an angle or when an impact is applied from the outside, 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 through 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, while all four injection holes on the frame can be opened to their maximum values, thereby improving the efficiency of fire suppression.

[0025] In addition, in the event of a fire, fire water can be sprayed farther and more evenly than with existing systems, so if special provisions are included, the number of sprinkler heads that need to be installed can be reduced, which has the effect of saving on construction costs. [Brief description 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. [Diagram 2] FIG. 2 is a cross-sectional view showing an operating state of the sprinkler head of FIG. [Diagram 3] FIG. 2 is a diagram showing the sprinkler head of the present invention installed in an inclined position. [Figure 4] 1 is a plan view showing an elastic member installed in a head of the present invention as a leaf spring. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 corresponds to 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 / 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 operation 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 lower end, 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 for opening and closing 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. A tool groove 114 into which a tool can be clamped 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 under the inner flange portion 111, and is coupled to the outside of the lower portion of the inner loading plate 110 by a locking screw 130 coupled to a screw coupling portion 112, so as to operate together.

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

[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 engagement groove 22 of the frame 20, and serves as a primary support part to maintain 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 the locking screws 130 fastened to the inner loading plate 110 , and the fuse metal 150 is installed between the heads of the locking screws 130 and the heat collectors 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. In the event of a fire, the heat of the flames is quickly transmitted to the fuse metal 150. When the fuse metal 150 melts, the force supporting only that 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 fire water pressure of the water outlet 11, and while it is engaged with the flange support portion 24, the fire is extinguished by the fire water discharged through the open injection hole 23 of the frame 20.

[0039] Here, the flange support portion 24 of the frame 20 is 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 supporting force significantly and forming a secondary support portion that supports the lower end portion 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 suffer positional deformation such as sagging to one side, 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 sheet mounting portion 13, which is a key part on which the spring sheet 170 is placed, and an auxiliary support portion 115 covering the outer peripheral surface of the sheet mounting portion 13 can be provided on the frame surface of the inner flange portion 111 by protruding it 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 due to structural deformation or damage due to water leakage.

[0043] The body 10 has a recess 14 at a portion 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 may be formed as a leaf spring with a resilient portion cut out to be placed at a predetermined height, as in FIG.

[0045] Therefore, when negative pressure due to 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 water outlet 11 caused by the release of negative pressure due to a fire, the outer peripheral surface of the frame of the outer loading plate 120 descends with being supported by the flange support portion 24.

[0047] Therefore, the outer flange portion 121 can be vertically lowered inside the frame 20 and can be 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, so that 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 sheet 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 the conventional method.

[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", whereas this application is capable of watering farther than that, satisfying the special clause, for example, water can be delivered up to "r2.8, r3.0".

[0051] Therefore, if the special provisions are permitted, the intervals between sprinkler heads can be increased, thereby reducing the number of sprinkler heads required, thereby reducing the costs of main and secondary piping materials and products, and reducing construction time and costs.

[0052] The invention made by the present inventor has been specifically described above using the above-mentioned embodiment, however, the present invention is not limited to the above-mentioned embodiment, and it is obvious to a person having ordinary skill in the art that the present invention 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 Recessed 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 part (111) on the upper side for opening and closing the water outlet (11), a screw coupling part (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 is connected to the inner loading plate (110) by a locking screw (130) so as to operate together with the inner loading plate; a frame (20) in which a ring locking groove (22) is provided on the inner surface of an upper spiral fastening portion (21) which is coupled to the spiral recess (12) of the body (10), and which is provided with a flange support portion (24) formed so as to be maximally close 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 which has a function of supporting the outer flange portion (121) and a function as a secondary support portion for supporting the lower end portion 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 portion (24) improve the support force, thereby preventing damage caused by malfunction or water leakage. The surface of the valve cap (113) on which the spring seat (170) is fitted is formed to be horizontal with the curved height of the spring seat (170); A flash-type sprinkler head characterized by an increased radius of firewater spray for fire suppression.

2. The body (10) has a seat placement portion (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 placement 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 multiple support parts.

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