Provided are an air blower and an air conditioning device having a resonance chamber capable of changing the frequency of sound attenuated. A blower (2) is provided with an impeller (4), a volute (6)for housing the impeller (4), an air intake casing (10) connected to the volute (6) and having an external air intake port (11) and an internal air intake port (12), and switching dampers (50, 55) foropening and closing the external air intake port (11) and the internal air intake port (12). The air intake case (10) is further provided with a resonance chamber (80) having an internal space that communicates with the internal space of the air intake case (10) via a communication port (81) provided along the orbital surface (S) of the switching damper (50) (50). The switching damper can changethe opening area of the communication port (81).
提供一种送风机和空调装置,具有能够改变被消音的声音的频率的共鸣室。送风机(2)具备叶轮(4)、收纳叶轮(4)的蜗壳(6)、与蜗壳(6)连接并且具有外气取入口(11)和内气取入口(12)的空气取入壳(10)、进行外气取入口(11)和内气取入口(12)的开闭的切换风门(50,55)。空气取入壳(10)进一步具有共鸣室(80),该共鸣室(80)具有经由沿着切换风门(50)的轨道面(S)设置的连通口(81)与空气取入壳(10)的内部空间连通的内部空间。切换风门能够改变连通口(81)的开口面积。
Air blower and air conditioning device
送风机和空调装置
2020-04-28
Patent
Electronic Resource
Chinese
IPC: | F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |