SUCTION DEVICE

• Main Author: HATAKEYAMA AKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 27.04.2023
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; RANGES; VENTILATING; WEAPONS

To provide a suction device that can be easily manufactured, can stably form an air curtain surrounding a wide range and enables efficient suction in the surrounded range by using a strong spiral flow.SOLUTION: A suction device includes: a suction flow passage 10 having an approximately circular suction port 10a and causing a suction flow; a first fan 20 for generating a suction flow in the suction flow passage 10; a cylindrical blowout flow passage 30 having an approximately annular outlet 30a surrounding the suction port 10a and coaxially surrounding the suction flow passage 10 to cause a blowout flow; a second fan 40 for introducing the blowout flow to the cylindrical blowout flow passage; a disk-like passage 50 connected to the approximately annular outlet 30a and expanding the blowout flow to form a disk shape orthogonal to an axis of the cylindrical blowout flow passage 30; a turning guide 60 provided in the disk-like passage 50 and turning the blowout flow extending to form a disk shape; and a blowout flow guide 70 for blowing out the blowout flow extending to form a disk shape from an annular blowout port 71 in a suction target 90 direction.SELECTED DRAWING: Figure 1 【課題】製造が容易で、広範囲を囲い込むエアカーテンを安定的に形成でき、囲い込んだ範囲を強い竜巻流で効率的に吸引することができる吸引装置を提供する。【解決手段】 略円形の吸引口１０ａを有し吸引流を流す吸引流通路１０と、吸引流通路１０に吸引流を発生させる第１のファン２０と、吸引口１０ａを包囲する略円環状の出口３０ａを有するとともに吸引流通路１０を同軸に包囲して吹出流を流す円筒状吹出流通路３０と、円筒状吹出流通路に吹出流を導入する第２のファン４０と、略円環状の出口３０ａに接続され、吹出流を円筒状吹出流通路３０の軸に直交する円板状に拡げる円板状通路５０と、円板状通路５０内に設けられ、円板状に広がる吹出流を旋回させる旋回ガイド６０と、円板状に広がった吹出流を円環状の吹出口７１から吸引対象９０方向に吹出させる吹出流ガイド７０と、を備えた。【選択図】 図１