Intake-type smoke removal system

Abstract

An intake-type smoke removal system is disclosed. The intake-type smoke removal system discharges gas flowing into a smoke removal zone to the outside of the smoke removal zone and includes a vacuum generating multistage Venturi configured to allow water provided from the outside to pass therethrough, the vacuum generating multistage Venturi being configured to generate negative pressure based on the Venturi effect while the water passes therethrough to suck the gas in the smoke removal zone, mix the sucked gas with the water, and discharge the gas mixed with the water.

1 . An intake-type smoke removal system, which discharges gas flowing into a smoke removal zone to the outside of the smoke removal zone, the intake-type smoke removal system comprising:
 a vacuum-generating multistage Venturi configured to allow water provided from the outside to pass therethrough, the vacuum-generating multistage Venturi being configured to generate negative pressure based on the Venturi effect while the water passes therethrough to suck the gas in the smoke removal zone, mix the sucked gas with the water, and discharge the gas mixed with the water;   a water supply unit configured to supply the water to the vacuum-generating multistage Venturi; and   a nozzle configured to spray the water, which is supplied through the water supply unit, into the vacuum-generating multistage Venturi.   
     
     
         2 . The intake-type smoke removal system of  claim 1 , wherein the vacuum-generating multistage Venturi is installed in a common duct that communicates with the smoke removal zone of each floor through a through-path, and
 wherein the water supply unit comprises:   a water supply pump configured to pump the water;   a main water supply pipe configured to guide the water, which is pumped by the water supply pump, to the vacuum-generating multistage Venturi; and   a branch pipe connected to the main water supply pipe, extending to an inlet part of the vacuum-generating multistage Venturi, and connected to the nozzle.   
     
     
         3 . The intake-type smoke removal system of  claim 2 , wherein the vacuum-generating multistage Venturi is provided as a plurality of vacuum-generating multistage Venturis disposed to be spaced apart from one another vertically, and
 wherein a blocking guide plate is provided between the vacuum-generating multistage Venturis to prevent water sprayed from the upper vacuum-generating multistage Venturi from striking the lower vacuum-generating multistage Venturi.   
     
     
         4 . The intake-type smoke removal system of  claim 3 , further comprising:
 a mixing conduit extending vertically and configured to accommodate the vacuum-generating multistage Venturi and the blocking guide plate and guide downward a mixture of gas and water discharged from the vacuum-generating multistage Venturi.   
     
     
         5 . The intake-type smoke removal system of  claim 1 , wherein the vacuum-generating multistage Venturi comprises:
 a spray pipe having an upper end at which the nozzle is provided, the spray pipe being configured to discharge the water sprayed from the nozzle; and   a Venturi casing configured to surround the spray pipe and guide downward the water sprayed through the spray pipe, the Venturi casing having a shape having a diameter that increases downward.   
     
     
         6 . The intake-type smoke removal system of  claim 5 , wherein the spray pipe comprises:
 a first spray pipe coupled to the nozzle and having an inlet port through which water and gas are simultaneously introduced, and an outlet part through which the water mixed with the gas is discharged;   a second spray pipe configured to accommodate the first spray pipe and having an inlet port through which gas is sucked, and an outlet part through which the introduced gas and the water mixed with the gas discharged from the first spray pipe are mixed and discharged, and   wherein mixing blades are formed in the outlet parts of the first and second spray pipes and mix the introduced water and gas by allowing the introduced water and gas to collide with each other.   
     
     
         7 . The intake-type smoke removal system of  claim 6 , wherein the Venturi casing comprises:
 a fixed pipe configured to accommodate the second spray pipe and having an inlet port provided at an upper end thereof so that gas is sucked through the inlet port;   a rotary pipe rotatably installed at a lower end of the fixed pipe; and   impeller blades positioned inside the rotary pipe and configured to rotate the rotary pipe by receiving kinetic energy from water while colliding with the sprayed water.   
     
     
         8 . The intake-type smoke removal system of  claim 7 , wherein an accommodation groove is formed at a lower end of the fixed pipe, extends in a circumferential direction, and has a predetermined cross-sectional shape in the circumferential direction, and
 wherein a bent insertion end portion is formed at an upper end of the rotary pipe, supported by being inserted into the accommodation groove, and configured to be slidable in the circumferential direction while being kept inserted into the accommodation groove.   
     
     
         9 . The intake-type smoke removal system of  claim 8 , further comprising:
 an oilless solid lubrication coating or a ring-shaped bearing installed between the bent insertion end portion and the accommodation groove.   
     
     
         10 . The intake-type smoke removal system of  claim 4 , further comprising:
 a water supply pump configured to reuse water discharged through the mixing conduit.