CENTRIFUGAL AIR-SENDING DEVICE, AIR-CONDITIONING APPARATUS, AND REFRIGERATION CYCLE APPARATUS

A centrifugal air-sending device includes an impeller that includes blades and a scroll casing that includes a bell mouth. Each of the blades is formed such that a vane length of the blade decreases from a portion of the blade close to a main plate toward a portion of the blade close to a side plate...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TERAMOTO, Takuya, HAYASHI, Hiroyasu, HORIE, Ryo, MICHIKAMI, Kazuya
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS RANGES REFRIGERATION OR COOLING REFRIGERATORS VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	A centrifugal air-sending device includes an impeller that includes blades and a scroll casing that includes a bell mouth. Each of the blades is formed such that a vane length of the blade decreases from a portion of the blade close to a main plate toward a portion of the blade close to a side plate. Each of the blades includes a first vane portion that includes an outer circumferential end and that is connected to the side plate, and a second vane portion that includes an inner circumferential end, a turbo vane that forms a backward-curved blade, and a portion close to the main plate in an axial direction of a rotation axis that protrudes further inward than the bell mouth. The blades are formed such that a blade outer diameter is larger than an inner diameter of the bell mouth.