CENTRIFUGAL FAN

PROBLEM TO BE SOLVED: To provide a centrifugal fan capable of preventing occurrence of rotating stall. SOLUTION: In the centrifugal fan 10 in which a rotating shaft 8 of an impeller 3 is provided to the inside of an inlet box 2, a guide member 31 is provided to the inside of the inlet box so as to c...

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Hauptverfasser:	HISAMA KEIJI, GOTOU MITSUNARI, KIMURA KAORU, HIGASHIMORI HIROTAKA, KOGA MASANORI
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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creator	HISAMA KEIJI GOTOU MITSUNARI KIMURA KAORU HIGASHIMORI HIROTAKA KOGA MASANORI
description	PROBLEM TO BE SOLVED: To provide a centrifugal fan capable of preventing occurrence of rotating stall. SOLUTION: In the centrifugal fan 10 in which a rotating shaft 8 of an impeller 3 is provided to the inside of an inlet box 2, a guide member 31 is provided to the inside of the inlet box so as to come into contact in a rotating direction of rotating flow in the inlet box. A flow in the inlet box becomes a rotating flow 90 taking the rotating shaft as a center. By so doing, the rotating flow velocity of the rotating flow is enhanced to reduce the flow rate at rotating stall start. The guide member is allowed to become a guide vane. A distance between the guide member and the rotating shaft is set to be approximately equated with the distance between the rotating shaft and tilted surfaces 2d, 2e or a bottom 2c with which the rotating flow in the inlet box comes into contact. The guide member 32 is provided so as to be freely movable. COPYRIGHT: (C)2005,JPO&NCIPI
format	Patent
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SOLUTION: In the centrifugal fan 10 in which a rotating shaft 8 of an impeller 3 is provided to the inside of an inlet box 2, a guide member 31 is provided to the inside of the inlet box so as to come into contact in a rotating direction of rotating flow in the inlet box. A flow in the inlet box becomes a rotating flow 90 taking the rotating shaft as a center. By so doing, the rotating flow velocity of the rotating flow is enhanced to reduce the flow rate at rotating stall start. The guide member is allowed to become a guide vane. A distance between the guide member and the rotating shaft is set to be approximately equated with the distance between the rotating shaft and tilted surfaces 2d, 2e or a bottom 2c with which the rotating flow in the inlet box comes into contact. The guide member 32 is provided so as to be freely movable. 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SOLUTION: In the centrifugal fan 10 in which a rotating shaft 8 of an impeller 3 is provided to the inside of an inlet box 2, a guide member 31 is provided to the inside of the inlet box so as to come into contact in a rotating direction of rotating flow in the inlet box. A flow in the inlet box becomes a rotating flow 90 taking the rotating shaft as a center. By so doing, the rotating flow velocity of the rotating flow is enhanced to reduce the flow rate at rotating stall start. The guide member is allowed to become a guide vane. A distance between the guide member and the rotating shaft is set to be approximately equated with the distance between the rotating shaft and tilted surfaces 2d, 2e or a bottom 2c with which the rotating flow in the inlet box comes into contact. The guide member 32 is provided so as to be freely movable. COPYRIGHT: (C)2005,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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subjects	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
title	CENTRIFUGAL FAN
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