Blower unit for automobile air conditioner

A blower unit for an automobile air conditioner which can set a double layer mode where both inside air and outside air are blown into a passenger compartment while being partitioned from each other, said blower unit comprising:

• a first casing having a first suction port for introducing outside air during said double layer mode, said first casing forming a first air passage through which outside air flows during said double layer mode;
• a second casing having a second suction port for introducing inside air during said double layer mode, said second casing forming a second air passage through which inside air flows during said double layer mode;
• a first centrifugal fan, disposed in said first casing, for blowing air sucked from said first suction port;
• a second centrifugal fan, disposed in said second casing, for blowing air sucked from said second suction port;
• a motor having a rotation shaft disposed approximately horizontally, said motor being disposed at an inner peripheral side of said first centrifugal fan to penetrate through said first suction port;
• a connection member disposed to partition said first and second air passages from each other, said connection member connecting one end of said first centrifugal fan in an axial direction to said rotation shaft of said motor;
• and
• a water-prevention member which is disposed at least on an upper portion of an outer peripheral surface of said motor at an inner peripheral side of said one end of said first centrifugal fan to prevent water dropped on said outer peripheral surface from moving to a side of said connection member,
• wherein said water-prevention member has a groove portion for receiving water dropped from said one end of said first centrifugal fan along said connection member.

A blower unit for an automobile air conditioner, said blower unit comprising:

• a casing for forming an air passage, said casing having a suction port for introducing therein outside air;
• a centrifugal fan, for sucking air from said suction port, said centrifugal fan having a first end and a second end in an axial direction thereof;
• a motor having a rotation shaft disposed approximately horizontally, said motor being disposed at an inner peripheral side of said first end of said centrifugal fan to penetrate through said suction port;
• a connection member which connects said first end of said centrifugal fan to said rotation shaft of said motor;
• and
• water-prevention means for preventing water contained in outside air from flowing into said motor, said water-prevention means being provided at least on an upper portion of an outer peripheral surface of said motor at an inner peripheral side of said first end of said centrifugal fan, adjacent to said connection member.