Centrifugal blower, blowing device, air conditioner, and refrigeration cycle device

Centrifugal blower, blowing device, air conditioner, and refrigeration cycle device

A centrifugal air blower comprises a fan (2); and a scroll casing (4). The scroll casing includes: a sidewall (4c) covering the fan (2) from an axial direction 5 of a rotation axis on which the fan (2) rotates, the side wall having a suction opening for sucking air; a discharge opening (41) for disc...

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Hauptverfasser: TERAMOTO, Takuya, YAMAGUCHI, Keijiro, TSUTSUMI, Hiroshi, YAMATANI, Takahiro, HORIE, Ryo, MICHIKAMI, Kazuya
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 TERAMOTO, Takuya
YAMAGUCHI, Keijiro
TSUTSUMI, Hiroshi
YAMATANI, Takahiro
HORIE, Ryo
MICHIKAMI, Kazuya
description A centrifugal air blower comprises a fan (2); and a scroll casing (4). The scroll casing includes: a sidewall (4c) covering the fan (2) from an axial direction 5 of a rotation axis on which the fan (2) rotates, the side wall having a suction opening for sucking air; a discharge opening (41) for discharging an airflow generated by the fan (2); a tongue portion (4b) for guiding the airflow to the discharge opening (41); a peripheral wall (4a) 10 surrounding the fan (2) from a radial direction of the rotation axis; and a bell mouth (3) formed along the suction opening (5) of the sidewall (4c). The bell mouth (3) includes an upstream end (3a) and a downstream end (3b), the upstream end being an end portion on an upstream side 15 in a direction of flow of the air passing through the suction opening (5), the downstream end being an end portion on a downstream side in the direction of flow of the air. A distance in the radial direction of the rotation shaft between the upstream end (3a) and the 20 downstream end (3b) at a location larger than the tongue portion (4b) in angle of a direction of rotation of the fan (2) is longer than a distance in the radial direction between the upstream end (3a) and the downstream (3b) end at a location adjacent to the tongue portion (4b). 18453341_1 (GHMatters) P113506.AU.1
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The scroll casing includes: a sidewall (4c) covering the fan (2) from an axial direction 5 of a rotation axis on which the fan (2) rotates, the side wall having a suction opening for sucking air; a discharge opening (41) for discharging an airflow generated by the fan (2); a tongue portion (4b) for guiding the airflow to the discharge opening (41); a peripheral wall (4a) 10 surrounding the fan (2) from a radial direction of the rotation axis; and a bell mouth (3) formed along the suction opening (5) of the sidewall (4c). The bell mouth (3) includes an upstream end (3a) and a downstream end (3b), the upstream end being an end portion on an upstream side 15 in a direction of flow of the air passing through the suction opening (5), the downstream end being an end portion on a downstream side in the direction of flow of the air. 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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 blower, blowing device, air conditioner, and refrigeration cycle device
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