# US 11,027,159 B2 · Water curtain head for preventing fire spread between floors in curtain wall building > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,027,159 B2 - Document ID: US11027159B2 - Status: Granted - Kind: B2 - Application number: 16/094,674 - Filed: 2016-11-01 - Published: 2019-02-28 - Granted: 2021-06-08 - Earliest claimed: 2016-04-22 - Assignees: Paratech, Incorporated; Korea Fire Industry Technology Institute; Chung Ang University Industry Academic Cooperation Foundation - Applicants: Paratech Company Limited; Korea Fire Industry Technology Institute; Chung Ang University Industry Academic Cooperation Foundation - Inventors: Dongjoon Kim; Junseok Nam; Hongsun Ryou - Web page: https://patentgrep.com/patent/US11027159B2 ## CPC - A62C 31/02: Nozzles specially adapted for fire-extinguishing - A62C 2/08: Water curtains (nozzles A62C31/02) - A62C 35/68: Details, e.g. of pipes or valve systems (valves in general F16K) - A62C 37/08: comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers - A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10) ## Abstract A water curtain head according to the present invention may comprise: a head body which is connected to a water supply pipe installed in an inner side of a building and has a water-releasing opening; and a deflector arranged adjacent to the water-releasing opening to allow water discharged by the water-releasing opening to pass therethrough. The deflector may comprise: a first spray nozzle formed on the front surface of the deflector to penetrate the front surface of the deflector; and a second spray nozzle formed to be recessed inward from a side surface of the deflector by a predetermined section. ## Claims ### Claim 1 A water curtain head comprising: a head body connected to a water supply pipe installed inside a building and having a water releasing opening; and a deflector disposed to be adjacent to the water releasing opening to allow water discharged by the water releasing opening to pass therethrough, wherein the deflector includes: a first spray nozzle formed on a front surface of the deflector to penetrate through the front surface; a plurality of second spray nozzles depressed inwards from a side surface of the deflector by a predetermined section; and a cover covering the head body and the deflector, wherein the deflector has a shape of a disk, wherein the plurality of second spray nozzles are formed in a circumferential direction of the disk, wherein the plurality of second spray nozzles are formed only in a partial region excluding an upper region of a circumference of the disk, wherein the deflector is formed to get thicker from center to outside, wherein the deflector is formed to thicken in a direction towards the water releasing opening, and wherein the water releasing opening is configured to discharge water horizontally, wherein the head body includes a first body, and a second body formed in a direction perpendicular to the first body and having the water releasing opening, wherein the first spray nozzle is formed to discharge water in a same direction as the discharge of water from the water releasing opening, wherein the plurality of second spray nozzles are formed to discharge water in a direction perpendicular to the discharge of water from the first spray nozzle, wherein the cover icludes a front surface corresponding to the direction in which water sprayed through the first spray nozzle, and a lower surface formed in a direction perpendicular to the front surface of the cover and corresponds to the direction in which water sprayed through the plurality of second spray nozzles, and wherein the cover includes a first heat sensing hole formed at a position of the front surface of the cover corresponding to the first spray nozzle and a second heat sensing hole formed at a position of the lower surface of the cover corresponding to the plurality of second spray nozles. ### Claim 2 (depends on 1) The water curtain head of claim 1, wherein a sloped portion is formed on a rear surface of the deflector such that a thickness of the deflector is increased from a center of the deflector toward an edge of the deflector. ### Claim 3 (depends on 1) The water curtain head of claim 1, wherein the head body is provided in a frame, and wherein the frame has a bent portion formed on at least a portion to correspond to a shape of the first and second bodies. ### Claim 4 (depends on 3) The water curtain head of claim 3, wherein a stopper is disposed on an opposite side of the water releasing opening of the second body, and wherein the stopper is coupled to the frame. ### Claim 5 (depends on 3) The water curtain head of claim 3, wherein a connection portion connected to the frame is formed on a rear surface of the deflector. ### Claim 6 (depends on 1) The water curtain head of claim 1, further comprising: a first cap connected to the deflector; a second cap disposed at the water releasing opening to close the water releasing opening; and a heat sensing portion configured to sense heat and disposed between the first and second caps. ### Claim 7 A water curtain head comprising: a head body connected to a water supply pipe installed inside a building and having a water releasing opening; a deflector having a spray nozzle allowing water discharged by the water releasing opening to pass therethrough; a heat sensing portion disposed between the head body and the deflector; and a cover covering the head body and the deflector, wherein the deflector includes a first spray nozzle formed on a front surface of the deflector to penetrate through the front surface of the deflector, and a plurality of second spray nozzles depressed inwards from a side surface of the deflector by a predetermined section, wherein the deflector has a shape of a disk, wherein the plurality of second spray nozzles are formed in a circumferential direction of the disk, wherein the plurality of second spray nozzles are formed only in a partial region excluding an upper region of a circumference of the disk, wherein the deflector is formed to get thicker from center to outside, wherein the deflector is formed to thicken towards the water releasing opening, wherein the water releasing opening is configured to discharge water horizontally, and wherein the head body included: a first body, and a second body formed in a direction perpendicular to the first body and having the ater releasing opening, wherein the first spray nozzle is formed to discharge water in a same direction as the discharge of water from the water releasing opening, wherein the plurality of second spray nozzles are formed to discharge water in a direction perpendicular to the discharge of water from the first spray nozzle, wherein the cover includes: a front surface corresponding to the direction in which water sprayed through the first spray nozzle, and a lower surface formed in a direction perpendicular to the front surface of the cover and corresponds to the direction in which water sprayed through the plurality of second spray nozzles, and wherein the cover includes a first heat sensing hole formed at a position of the front surface of the cover corresponding to the first spray nozzle and a second heat sensing hole formed at a position of tee lower surface of the cover corresponding to the plurality of second spray nozzles. ### Claim 8 (depends on 7) The water curtain head of claim 7, wherein the cover is coupled to a first fixing portion, and wherein the cover is coupled to the first fixing portion by a heat sensing alloy such that the cover is separated from the first fixing portion when an ambient temperature of the cover is equal to or higher than a predetermined temperature. ### Claim 9 (depends on 8) The water curtain head of claim 8, wherein a hook is formed on at least one of the first fixing portion and a second fixing portion and a recess is formed on another of the first fixing portion and the second fixing portion to allow the hook to be hooked therein so that the first and second fixing portions are coupled to each other. ### Claim 10 (depends on 1) A curtain wall water curtain head system applied to a curtain wall building, the curtain wall water curtain head system comprising: a curtain wall; and the water curtain head according to claim 1, the water curtain head installed to be adjacent to the curtain wall, wherein the front surface of the deflector faces the curtain wall such that water sprayed through the first spray nozzle is oriented toward the curtain wall.