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1. EP3792498 - BLOWER DEVICE, AND OUTDOOR UNIT FOR AIR CONDITIONER

Office
European Patent Office
Application Number 18918171
Application Date 07.05.2018
Publication Number 3792498
Publication Date 17.03.2021
Publication Kind A4
IPC
F04D 19/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
19Axial-flow pumps specially adapted for elastic fluids
F04D 25/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
25Pumping installations or systems specially adapted for elastic fluids
02Units comprising pumps and their driving means
08the working fluid being air, e.g. for ventilation
F04D 29/66
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
66Combating cavitation, whirls, noise, vibration, or the like; Balancing
F04D 29/70
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
70Suction grids; Strainers; Dust separation; Cleaning
CPC
F04D 19/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
19Axial-flow pumps
002Axial flow fans
F04D 25/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
25Pumping installations or systems
02Units comprising pumps and their driving means
08the working fluid being air, e.g. for ventilation
F04D 29/667
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
66Combating cavitation, whirls, noise, vibration or the like
661especially adapted for elastic fluid pumps
667by influencing the flow pattern, e.g. suppression of turbulence
F04D 29/703
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
70Suction grids; Strainers; Dust separation; Cleaning
701especially adapted for elastic fluid pumps
703specially for fans, e.g. fan guards
F24F 1/56
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
1Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
56Casing or covers of separate outdoor units, e.g. fan guards
Applicants MITSUBISHI ELECTRIC CORP
Inventors YAMAMOTO KATSUYUKI
TADOKORO TAKAHIDE
TERAMOTO TAKUYA
ABE TAKAFUMI
FUSE TOSHIYA
Designated States
Title
(DE) GEBLÄSEVORRICHTUNG UND AUSSENEINHEIT FÜR KLIMAANLAGE
(EN) BLOWER DEVICE, AND OUTDOOR UNIT FOR AIR CONDITIONER
(FR) DISPOSITIF SOUFFLANT ET UNITÉ D'EXTÉRIEUR POUR CLIMATISEUR
Abstract
(EN) An air-sending device includes: a propeller fan including a shaft located on a rotational axis of the propeller fan and a blade located on a circumferential portion of the shaft; and a fan guard provided leeward of the propeller fan, and including a rib unit in which a plurality of openings are provided to allow air to pass through the openings. The fan guard includes a first region that is located in such a manner as to overlap with the shaft as viewed from a point in a direction parallel to the rotational axis, and a second region that is located outward of the shaft and inward of a rotational trajectory of the blade as viewed from a point in the direction parallel to the rotational axis. Where a dimension of the rib unit in a direction parallel to the rotational axis is a height of the rib unit, a height of part of the rib unit that is located in the first region is smaller than a height of part of the rib unit that is located in the second region.
(FR) L'invention concerne un dispositif soufflant comprenant : un ventilateur hélicoïdal ayant une section d'arbre qui est disposée sur un axe de rotation, et ayant des pales qui sont disposées autour de la section d'arbre ; et un protège-ventilateur disposé sous le vent du ventilateur hélicoïdal et ayant des nervures qui définissent une pluralité d'ouvertures à travers lesquelles l'air peut s'écouler. Lorsqu'il est observé dans une direction parallèle à l'axe de rotation, le protège-ventilateur comprend une première région qui est disposée en chevauchement de la section d'arbre, et une deuxième région qui est située sur le côté périphérique extérieur par rapport à la section d'arbre et sur le côté périphérique intérieur par rapport au trajet de rotation des pales. Si la dimension des nervures dans la direction parallèle à l'axe de rotation est définie comme la hauteur des nervures, la hauteur des nervures dans la première région est inférieure à la hauteur des nervures dans la deuxième région.
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