BLOWER

• Main Author: MAEDA KENICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2021
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; PERFORMING OPERATIONS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

To suppress deviation in the distribution of wind speed flowing into a heat exchanger 40 for cooling.SOLUTION: An indoor air conditioning unit 10 includes a centrifugal blower 30 including a centrifugal fan 31 that sucks an air flow from one side in an axial direction and blows an air flow outside in a radial direction. The indoor air conditioning unit 10 includes a filter 50 disposed on the other side in the axial direction relative to the centrifugal fan 31. An air flow blown from the centrifugal fan 31 includes an air flow K1 and an air flow K2. After being blown from the centrifugal fan 31, the air flow K1 is bent to the other side in the axial direction and flows to the other side in the axial direction. After being blown from the centrifugal fan 31, the air flow K2 is bent to the other side in the axial direction, then, bent inside in the radial direction, further bent to the other side in the axial direction, and flows in the other side in the axial direction. The filter 50 reduces a pressure loss ratio (YA2/YA1) compared to a pressure loss ratio (YB2/YB1). Therefore, the filter 50 suppresses deviation in the distribution of the wind speed of an air flow blown from the centrifugal fan 31.SELECTED DRAWING: Figure 1 【課題】冷却用熱交換器４０に流れる風速分布に偏りが生じることを抑える。【解決手段】室内空調ユニット１０は、軸線方向の一方側から空気流を吸い込んで径方向の外側に空気流を吹き出す遠心ファン３１を備える遠心送風機３０を備える。室内空調ユニット１０は、遠心ファン３１に対して軸線方向の他方側に配置されているフィルタ５０とを備える。遠心ファン３１から吹き出される空気流は、空気流Ｋ１と空気流Ｋ２とを含んでいる。空気流Ｋ１は、遠心ファン３１から吹き出された後に軸線方向の他方側に曲げられて軸線方向の他方側に流れる。空気流Ｋ２は、遠心ファン３１から吹き出された後に軸線方向の他方側に曲げられ、その後径方向の内側に曲げられ、更にその後軸線方向の他方側に曲げられて軸線方向の他方側に流れる。フィルタ５０は、圧力損失比（ＹＡ２／ＹＡ１）を圧力損失比（ＹＢ２／ＹＢ１）に比べて小さくする。したがって、遠心ファン３１から吹き出される空気流の風速分布に偏りが生じることをフィルタ５０が抑える。【選択図】図１