IMPELLER OF CENTRIFUGAL FLOWER

PURPOSE:To reduce noises and improves efficiency by specifying relations between vane length and vane thickness/acting face, and decreasing width of a flow passage as it goes from an inlet to an outlet end side. CONSTITUTION:Vanes 7 of an impeller 3 are wing-shaped. In the vanes 7 of the impeller 3,...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUMOTO TAKEHIDE, MIYAZAKI HIROSHI, HASHIZUME NAOTERU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To reduce noises and improves efficiency by specifying relations between vane length and vane thickness/acting face, and decreasing width of a flow passage as it goes from an inlet to an outlet end side. CONSTITUTION:Vanes 7 of an impeller 3 are wing-shaped. In the vanes 7 of the impeller 3, a measurement ratio (Wm/c) of a maximum thicknesses Wm9 of vanes against vane lengths (c) between an inlet end and outlet end of an inflow passage is ranged between 0.14 and 0.16. A measurement ratio (Lm/C) of the vane lengths C between the inlet end and outlet end against a maximum distance Lm between a line from the inlet to the outlet end acting faces ranges from 0.2 to 0.3. Widths of flow passages 13 between the vanes next to each other decrease as they go from the inlet to the outlet end sides. Noise generation can be prevented surely, while efficiency can be improved enough.