Ventilation apparatus

Abstract

A ventilation apparatus includes a suction port through which air is sucked-in and a plurality of discharge ports through which air is discharged. The plurality of discharge ports are intermittently along a circumferential direction of the suction port. The air sucked-in through the suction port is guided to the plurality of discharge ports by a discharge passage. At least one discharge port among the plurality of discharge ports has an inner region on the suction port side and an outer region opposite to the suction port. The at least one discharge port is formed so that the outer region is located higher than the inner region.

1 . A ventilation apparatus comprising:
 a suction port through which air is sucked-in;   a plurality of discharge ports intermittently along a circumferential direction of the suction port and through which the air is discharged; and   a discharge passage configured to guide the air sucked-in through the suction port to the plurality of discharge ports,   wherein at least one discharge port among the plurality of discharge ports is formed so that an outer region opposite to the suction port is located higher than an inner region close to the suction port.   
     
     
         2 . The ventilation apparatus of  claim 1 , wherein the discharge passage extends downward to be inclined outward along a radial direction and is connected to the at least one discharge port. 
     
     
         3 . The ventilation apparatus of  claim 1 , wherein the discharge passage extends downward, twisting along the circumferential direction and is connected to the at least one discharge port. 
     
     
         4 . The ventilation apparatus of  claim 1 , wherein the at least one discharge port is located between a horizontal plane including the inner region and a virtual plane including the inner region and perpendicular to the discharge passage. 
     
     
         5 . The ventilation apparatus of  claim 1 , wherein the at least one discharge port is located on a virtual plane including the inner region and perpendicular to the discharge passage. 
     
     
         6 . The ventilation apparatus of  claim 1 , wherein θ 1  is an angle between a vertical direction and a direction in which the discharge passage extends downward, twisting along the circumferential direction and satisfies 30°≤θ 1 ≤60°. 
     
     
         7 . The ventilation apparatus of  claim 1 , wherein θ 2  is an angle between a vertical direction and a direction in which the discharge passage extends downward to be inclined along a radial direction and satisfies 15≤θ 2 ≤45°. 
     
     
         8 . The ventilation apparatus of  claim 1 , wherein θ 3  is an angular interval between two adjacent discharge ports 12≤θ 3 ≤36°. 
     
     
         9 . The ventilation apparatus of  claim 1 , comprising:
 a main body, cylindrical in shape, provided with the suction port, the discharge passage, and the plurality of discharge ports; and   a fan, between the suction port and the discharge passage in the main body, configured to guide the air sucked-in through the suction port and supply the air to the discharge passage.   
     
     
         10 . The ventilation apparatus of  claim 9 , wherein a suction passage is provided inside the main body to connect the suction port to the fan. 
     
     
         11 . The ventilation apparatus of  claim 10 , wherein the discharge passage is disposed around the suction passage. 
     
     
         12 . The ventilation apparatus of  claim 10 , wherein the suction passage comprises an upstream-side passage element, a cross-sectional area of which decreases from the suction port toward a downstream side, and a downstream-side passage element configured to connect the upstream-side passage element to the fan. 
     
     
         13 . The ventilation apparatus of  claim 12 , wherein the main body comprises an upstream-side portion provided with the suction port and the upstream-side passage element, and a downstream-side portion provided with the downstream-side passage element,
 the discharge passage is provided in the upstream-side portion and the downstream-side portion, and   the plurality of discharge ports are provided in the upstream-side portion.   
     
     
         14 . The ventilation apparatus of  claim 13 , wherein a portion provided in at least the upstream-side portion of the discharge passage is inclined outward along a radial direction, twisted along the circumferential direction, and connected to the plurality of discharge ports. 
     
     
         15 . The ventilation apparatus of  claim 1 , comprising a filter disposed between the suction port and the at least one discharge port and configured to filter out foreign materials from the air sucked-in.