Suction-type sprinkler head with improved smoke control efficiency

Abstract

The present invention relates to an intake-type sprinkler head with an improved smoke control effect. The sprinkler head of the present invention includes a screw blade that is inserted into a nozzle and rotates by water pressure to form a vortex flow of water. At the end of the screw blade, a small diameter portion is formed with a diameter smaller than the overall outer diameter, and a stopper is formed by the small diameter portion. Additionally, a stopper rim protruding in the direction of the inner circumference is formed at the end of the nozzle, and the stopper is installed to engage with the stopper rim. In particular, the small diameter portion is formed higher than the thickness of the stopper rim so that the end of the screw blade protrudes downward below the end of the nozzle. Consequently, the vortex flow formed inside the nozzle is sprayed directly at the nozzle outlet, thereby suppressing the aggregation of water droplets and forming a large amount of fine water droplets. As a result, the contact area between water and smoke is increased, thereby obtaining a smoke control effect that improves smoke removal efficiency during a fire.

Description

Technology Field

[0001] The present invention relates to an intake-type sprinkler head with an improved smoke control effect, and more specifically, to an intake-type sprinkler head with an improved smoke control effect that, along with a water spraying function for extinguishing a fire, efficiently absorbs and captures heat and toxic gases generated during a fire to reduce casualties caused by toxic gases. Background Technology

[0002] Buildings are required to be equipped with various firefighting facilities that meet the standards stipulated in the strengthened Building Fire Prevention Act. Firefighting facilities include fire extinguishing systems, alarm systems, evacuation systems, fire water supply systems, and equipment related to firefighting activities. Among these, sprinklers are an important automatic fire extinguishing system that detects heat during a fire and automatically discharges water supplied from fire hoses installed in the ceiling, thereby extinguishing the fire at an early stage and preventing its spread.

[0003] These sprinklers are recognized as excellent and practical equipment capable of automatically extinguishing fires. However, in the event of a fire, casualties are caused more by the inhalation of smoke and toxic gases generated during combustion than by burns.

[0004] Combustion gases generated during a fire can be irritating, anesthetic, or toxic depending on the chemical properties of the combustible material and the state of combustion. When these combustion products are absorbed into the body through the respiratory system, fire extinguisher, or skin, they cause oxygen deficiency, paralysis, anesthesia, dizziness, and irritation of the respiratory system, leading to respiratory and physical functional impairments in evacuees and ultimately death.

[0005] In particular, toxic gases generated in large quantities as various types of flammable materials burn during a fire are not effectively managed even with separate exhaust systems, so in reality, there are virtually no effective methods to deal with toxic gases during a fire.

[0006] Accordingly, to resolve this problem, a smoke removal device that performs a smoke control function by sucking in smoke using an ejector principle along with the spraying of water during a fire and expelling toxic gases together with water has been disclosed in Patent No. 10-1168831.

[0007] According to the prior art described above, as shown in FIG. 1, a blade is provided inside the nozzle to form a vortex flow, and water supplied with strong water pressure is converted into a vortex flow by the blade and discharged, thereby effectively mixing water and toxic gas.

[0008] However, the above structure is impossible to implement because it only shows a structure in which the blade (a) is inserted into the nozzle tube (b) and does not disclose a structure in which the rotating blade (a) does not detach from the nozzle tube (b). In particular, since the blade (a) is positioned at a distance (s) above the lowest nozzle (c), the water descending along the spiral of the blade cannot be sprayed directly from the end of the nozzle (c) but is combined at a distance (s) before being sprayed, resulting in a problem in that toxic gases inhaled by negative pressure cannot be absorbed and captured more efficiently.

[0009] In other words, when water descends from the blade while creating a vortex and is sprayed through the nozzle, the water combines at the aforementioned separated distance to form large water droplets, resulting in a small surface area for absorbing smoke and thus having the disadvantage of not being able to achieve an efficient smoke removal effect. The problem to be solved

[0010] The objective of the present invention is to solve these problems and to provide an intake type sprinkler head with an improved smoke removal effect that can further enhance the smoke removal effect by configuring the end of the screw blade to protrude beyond the end of the nozzle so that water is sprayed and ejected as very small water droplets from the end of the nozzle. means of solving the problem

[0011] The present invention provides an intake-type sprinkler head with improved smoke control effect, comprising: a nozzle of a main body into which water is supplied and sprayed upon the occurrence of a fire; and a screw blade inserted into the nozzle and rotating by water pressure to form a vortex flow of water, wherein a small diameter portion having a diameter smaller than the overall outer diameter is formed at the end of the screw blade and a catch projection is formed by the small diameter portion, and a catch rim protruding in the direction of the inner circumference is formed at the end of the nozzle and installed so as to catch on the catch rim, wherein the small diameter portion is formed higher than the thickness of the catch rim so that the end of the screw blade protrudes downward from the end of the nozzle. The screw blade is characterized by forming a vortex flow in the fluid inside the nozzle by rotation, and spraying and ejecting fine water droplets from the nozzle outlet.

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[0016] delete Effects of the invention

[0017] The present invention, as described above, forms a vortex flow as the screw blade rotates without detaching from the nozzle tube, and in particular, since the water descending in the vortex flow is sprayed as very small water droplets at the end of the nozzle, the surface area is increased, and thus the smoke removal effect is greatly enhanced. Brief explanation of the drawing

[0018] Figure 1 is a structural diagram of a conventional sprinkler head. FIG. 2 is an exemplary diagram of a sprinkler head according to an embodiment of the present invention. FIG. 3 is an exploded example of a sprinkler head according to an embodiment of the present invention. Figure 4 is a cross-sectional view of the nozzle tube. Figure 5 is an example of a screw blade. FIG. 6 is a cross-sectional view illustrating the water spraying and smoke extraction operation of the present invention. Specific details for implementing the invention

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings, focusing on the parts necessary to understand the operation and function according to the present invention.

[0020] The embodiments described in this specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all of the technical concepts of the present invention; therefore, it should be understood that various modifications capable of replacing them may exist at the time of filing this application.

[0021] In describing the embodiments of the present invention, unnecessary technical details that are well known in the technical field to which the present invention belongs and are not directly related to the present invention are omitted to ensure clearer communication without obscuring the essence of the invention.

[0022] Referring to FIGS. 2 and 3, the intake type sprinkler head (100) of the present invention, which has an improved smoke control effect, comprises a nozzle (10) into which water is supplied and sprayed when a fire occurs, a main body (20) including a first screw portion (11) and a second screw portion (12), a screw blade (30) inserted into the nozzle (10) of the main body (20) and rotating by water pressure to form a vortex flow, and a mixed spray pipe (40) in the form of a Venturi tube that is screw-coupled to the second screw portion (12) of the main body (20) and has one or more smoke intake ports (41) formed therein.

[0023] At the end of the screw blade (30) inserted into the nozzle (10) of the main body (20), a small diameter portion (31) smaller than the total outer diameter and a catch projection (32) are formed so as to be caught on a catch rim (13) protruding from the inner circumference of the end of the nozzle (10).

[0024] Additionally, the small diameter portion (31) is formed higher than the thickness of the catch rim (13) of the nozzle (10) so that the end of the screw blade (30) protrudes downward below the end of the nozzle (10).

[0025] The sprinkler head (100) of the present invention, as described above, is installed by screwing the first screw portion (11) into a branch pipe branched from a fire extinguishing drain pipe installed on the ceiling, and a mixing spray pipe (40) is screwed into the second screw portion (12), so that water supplied at high pressure from the drain pipe is ejected through the nozzle (10) into the mixing spray pipe (40) to suppress the fire.

[0026] At this time, the water ejected through the nozzle (10) is converted from a straight flow to a vortex flow by the screw blade (30) installed inside the nozzle (10) and ejected downward through the mixing injection pipe (40).

[0027] The mixing injection pipe (40), which is screw-coupled to the second screw portion (12) on the lower side of the main body (20), is formed in the shape of a Venturi tube that narrows at the bottom, and one or more smoke intake ports are drilled at a position above the end of the nozzle (10) to suck in external smoke. When water is ejected at high pressure through the nozzle (10), smoke from outside the sprinkler head (100) is sucked in by the principle of an ejector due to negative pressure and mixed with the sprayed water, thereby obtaining a smoke removal effect that removes smoke.

[0028] Here, the screw blade (30) is installed such that a small diameter portion (31) smaller than the total outer diameter is formed at the end, and a catch (32) formed by the small diameter portion (31) catches on a catch rim (13) protruding from the inner circumference at the end of the nozzle (10). Thus, the screw blade (30) is stably installed inside the nozzle (10) and forms a vortex flow while freely rotating by water pressure.

[0029] In particular, since the small diameter portion (31) formed at the end of the screw blade (30) is formed higher than the thickness of the catch rim (13) of the nozzle (10), when the catch projection (32) of the screw blade (30) is installed by being caught on the catch rim (13) of the nozzle (10), the end of the screw blade (30) protrudes downward below the end of the nozzle (10), so that the water supplied through the nozzle (10) is ejected as fine water droplets directly from the end of the nozzle (10), and thus the surface area is increased by many fine water droplets, thereby greatly enhancing the effect of removing smoke sucked into the smoke intake port (41).

[0030] To elaborate, the prior patent shown in FIG. 1 has the disadvantage that the rotating blade is not installed at the end of the nozzle (10) and is spaced apart from the end, so when water descends while creating a vortex on the blade and is sprayed into the nozzle (10), the water is combined at the spaced-apart distance and sprayed as large water droplets, so the surface area for absorbing smoke is formed small, and thus an efficient smoke removal effect cannot be obtained. However, in the present invention, the end of the screw blade (30) protrudes downward from the end of the nozzle (10), so there is no spaced-apart distance like in the prior patent. Therefore, the water ejected through the screw blade (30) is not combined but is ejected directly at the end of the nozzle (10) with a wide radius, so the water droplets are not large like in the conventional method but are ejected as very fine water droplets, and the surface area in contact with smoke is increased, so the smoke removal effect is excellent.

[0031] The above description is merely an illustrative explanation of the technical concept of the present invention and is not limited thereto. A person skilled in the art to which the present invention pertains will be able to make various modifications, changes, and substitutions within the scope of the essential characteristics of the present invention without departing from its nature. Explanation of the symbols

[0032] 100: Sprinkler head 10: Nozzle 11: First screw section 12: Second screw part 13 : catch edge 20 : Main body 30: Screw blade 31 : Blind 32 : Stopper 41: Smoke intake 40 : Mixing spray nozzle

Claims

Claim 1 An intake-type sprinkler head with improved smoke control effect comprising: a nozzle of a main body into which water is supplied and sprayed upon the occurrence of a fire; and a screw blade inserted into the nozzle and rotating by water pressure to form a vortex flow of water, wherein a small diameter portion having a diameter smaller than the overall outer diameter is formed at the end of the screw blade and a locking projection is formed by the small diameter portion, and a locking rim protruding in the direction of the inner circumference is formed at the end of the nozzle and the locking projection is installed to engage with the locking rim, wherein the small diameter portion is formed higher than the thickness of the locking rim so that the end of the screw blade protrudes downward below the end of the nozzle. Claim 2 An intake-type sprinkler head with improved smoke removal effect according to claim 1, characterized in that the screw blade forms a vortex flow in the fluid inside the nozzle by rotation, and is sprayed out as fine water droplets at the nozzle outlet.

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