DUCT SHAPE BLOWER

PROBLEM TO BE SOLVED: To provide a duct shape blower of which fan suction port side cross section shape has a step, of which power and noise are as low as a blower with a suction port bell mouth, and which is small, light in weight, easy to design and process, and low in cost. SOLUTION: The blower i...

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Bibliographische Detailangaben
Hauptverfasser:	HORII YUTAKA, SOGA YOTA
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:	PROBLEM TO BE SOLVED: To provide a duct shape blower of which fan suction port side cross section shape has a step, of which power and noise are as low as a blower with a suction port bell mouth, and which is small, light in weight, easy to design and process, and low in cost. SOLUTION: The blower is composed of a fan 2 driven by an electric motor 1, and a cylindrical duct 3 surrounding circumference of the fan 2 and including a suction port 4 and a delivery port 5. A air current introduction tube 10 having a larger inner diameter than inner diameter of the duct 3 is provided at the most upstream side of the suction port 4. The side cross section shape includes the step 9. COPYRIGHT: (C)2010,JPO&INPIT