PROBLEM TO BE SOLVED: To improve fan efficiency, in a blower having a flat centrifugal multi-blade fan.SOLUTION: A blower comprises a centrifugal multi-blade fan 12 which has a large number of blades 121 around a rotating shaft A1, sucks in air from the inside of a radiation direction, and blows out the air to the outside of the radial direction, and a casing 13 for accommodating the centrifugal multi-blade fan 12. In the centrifugal multi-blade fan 12, a diameter of a region which is formed of the blades 121 is set as d1, a height in a direction of the rotating shaft A1 of the blades 121 satisfies a relationship of d1/h1≥5, a suction port 131 for sucking air is formed in a region at a one-end side in an axial direction of the centrifugal multi-blade fan 12 out of the casing 13, an air flow passage 132 in which air blown out of the centrifugal multi-blade fan 12 flows is formed in a region at the outside of the radial direction rather than the centrifugal multi-blade fan 12 out of the casing 13, and the casing 13 has an inclined part 135 which expands to at least either of the one-end side in the axial direction and the other end side in the axial direction as progressing toward the outside of the radial direction.
【課題】偏平な遠心多翼ファンを備える送風機において、ファン効率を向上させる。【解決手段】回転軸A1周りに多数枚の翼121を有し、空気を径内方側から吸い込んで径外方側に吹き出す遠心多翼ファン12と、遠心多翼ファン12を収納するケーシング13とを備え、遠心多翼ファン12は、翼121で構成された部位の直径d1、および翼121の回転軸A1方向における高さがd1/h1≧5の関係を満たしており、ケーシング13のうち遠心多翼ファン12の軸方向一端側の部位には、空気を吸い込む吸込口131が形成されており、ケーシング13のうち遠心多翼ファン12よりも径外方側の部位は、遠心多翼ファン12から吹き出された空気が流れる空気流路132を形成しており、ケーシング13は、空気流路132を、径外方側に向かうにつれて軸方向一端側および軸方向他端側の少なくとも一方に拡大する傾斜部135を有している。【選択図】図3
BLOWER
送風機
2015-08-13
Patent
Elektronische Ressource
Japanisch
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 |