Air conditioner for vehicle
AssigneeDenso Corporation
InventorsManabu Miyata, Yuichi Shirota, Hisashi Tanaka, Koji Ito, Hikaru Sugi
Life of this patent
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Abstract
An inside air/outside air switching case employing a rotary door, since an introduced air flows along an inner surface of a circumferential wall of the rotary door, an air flow guiding portion constructed of a plurality of protruding portions formed in a corrugated shape of concavities and convexities is formed on an inner surface of the circumferential wall of the rotary door. In this way, the air flow directed toward a suction inlet is made uniform by means of the guiding portion, and the air flow noise can be suppressed.
Claims8
An air conditioner for a vehicle having a passenger compartment, comprising:
- an air flow casing having a suction inlet and forming an air passage for introducing air sucked from said suction inlet toward said passenger compartment;
- an air blowing fan disposed in said casing on a downstream air side of said suction inlet;
- an inside air/outside air switching case disposed adjacently on an upstream air side of said suction inlet in communication with said suction inlet, said inside air/outside air switching case having an inside air introduction inlet for introducing air inside said passenger compartment thereinto and an outside air introduction inlet for introducing air outside said passenger compartment thereinto;
- a rotary door rotatably disposed within said inside air/outside air switching case with a rotary shaft as its center, said rotary door having an arc-shaped circumferential wall for opening or closing said inside air introduction inlet and said outside air introduction inlet;
- and
- an air flow guiding portion protruding from an inner surface of said circumferential wall of said rotary door for guiding air flow directed toward said suction inlet uniformly, said air flow guiding portion including a plurality of protruding portions formed in a corrugated shape of concavities and convexities.
An air conditioner for a vehicle having a passenger compartment, said air conditioner comprising:
- a casing having a suction inlet and forming an air passage for introducing air sucked from said suction inlet toward said passenger compartment;
- an air blowing fan disposed in said casing on a downstream air side of said suction inlet;
- an inside air/outside air switching case disposed adjacently on an upstream air side of said suction inlet in communication with said suction inlet, said inside air/outside air switching case having an inside air introduction inlet for introducing air inside said passenger compartment thereinto and an outside air introduction inlet for introducing air outside said passenger compartment thereinto;
- a rotary door rotatably disposed within said inside air/outside air switching case with a rotary shaft as its center, said rotary door having an arc-shaped circumferential wall for opening or closing said inside air introduction inlet and said outside air introduction inlet and a pair of end walls disposed at opposite ends of said circumferential wall;
- a reflection member disposed between said pair of end walls of said rotary door, said reflection member protruding from an inner surface of said circumferential wall of said rotary door for reflecting a noise irregularly, said reflection member including at least one flat plate disposed at a predetermined interval between said pair of end walls on said circumferential wall of said rotary door to form an open space between one of said pair of end walls and said at least one flat plate.
Dependencies are inferred from the claim text.