AIR BLOWING DEVICE

• Main Authors: SAKAKIBARA DAISUKE, SEKIDO YASUHIRO, NAKAMURA TAKAHITO, KATO SHINYA
• Format: Patent
• Language: English; Japanese
• Published: 07.06.2018
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

PROBLEM TO BE SOLVED: To provide an air blowing device having first and second centrifugal fans, and allowing for improvement in the temperature miscibility of the blown air of the second fan by causing the second fan to suck the blown air of the first fan.SOLUTION: The blown air of a first fan 14 flows into an air guide passage 161 as a swirl flow which turns in the same direction as that of the first fan 14. Then, the air guide passage 161 guides the flow-in swirl flow to a second fan 20 while maintaining a swirl direction of the swirl flow. As a result, the second fan 20 which rotates in a direction reverse to the first fan 14 sucks air which forms the swirl flow swirling in a direction reverse to the second fan 20 from a second fan suction port 181a. Therefore, the air is strongly swirled by the second fan 20 when the second fan 20 sucks the air compared with the case that the air sucked by the second fan 20 is, for example, not swirled. The temperature miscibility of the blown air of the second fan 20 can be thereby improved.SELECTED DRAWING: Figure 1 【課題】遠心式の第１ファンと第２ファンとを備え、第１ファンの吹出し空気を第２ファンへ吸い込ませることで第２ファンの吹出し空気の温度混合性を向上させることができる送風装置を提供する。【解決手段】第１ファン１４の吹出し空気は、第１ファン１４と同じ向きに回る旋回流として導風通路１６１へ流入する。そして、導風通路１６１は、その流入した旋回流を、その旋回流の旋回方向を維持しつつ第２ファン２０へと導く。これにより、第１ファン１４とは逆向きに回転する第２ファン２０は、その第２ファン２０とは逆向きに旋回する旋回流を成す空気を第２ファン吸込口１８１ａから吸い込む。従って、第２ファン２０が吸い込む空気が例えば旋回していない場合と比較して、第２ファン２０が空気を吸い込む際に、その空気が第２ファン２０によって強力に撹拌される。そのため、第２ファン２０の吹出し空気の温度混合性を向上させることが可能である。【選択図】図１