INDOOR EQUIPMENT OF AIR CONDITIONER AND AIR CONDITIONER USING INDOOR EQUIPMENT

• Main Authors: KOMATSU TOSHIHIRO, YAMAKAWA HIRONOBU, OSATO KENICHI, YOSHIDA KAZUMASA, YOSHIKAWA MASASHI, TOKITA NORIKO
• Format: Patent
• Language: English; Japanese
• Published: 19.03.2015
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; RANGES; VENTILATING; WEAPONS

PROBLEM TO BE SOLVED: To provide indoor equipment of an air conditioner including a cross flow fan reducing noise so as to overcome a problem that a frequency with an average pitch is apt to be superior, noise at a specified frequency is increased and comfort is not improved when an angular clearance between similar locations on adjoining pairs of blades is determined by a prescribed mathematical expression.SOLUTION: Indoor equipment of an air conditioner of this invention comprises an indoor heat exchanger, a cross flow fan having several fan blades arranged at a downstream side of the indoor heat exchanger and of which outer diameter shape is wave-shape or saw-tooth shape, and the fan blades are arranged at positions where a blade pitch of the cross flow fan is increased or decreased in a substantial periodical manner. 【課題】羽根の隣接する対の上における同様な場所の間の角度間隔が所定の数式により決定される場合、平均ピッチによる周波数が卓越する傾向にあり、特定の周波数での騒音が増大し、快適性が向上しない課題があった。本発明の目的は、騒音を低減した貫流ファンを備えた空気調和機の室内機を提供することである。【解決手段】本発明の空気調和機の室内機は、室内熱交換器と、室内熱交換器の下流に設けられ、外径形状が波形又はのこぎり形である複数のファンブレードを有する貫流ファンとを備え、ファンブレードは貫流ファンのブレードピッチが略周期的に増減する位置に配置されている。【選択図】図４