Blower unit

A blower unit comprising:

• an electric motor having a rotation shaft;
• a fan that draws in air from one side in an axial direction of the rotation shaft and blows out the air in a radial direction of the rotation shaft;
• and
• a scroll casing housing the fan and having an air passage, wherein
• the scroll casing has
• an upper wall having a suction port for drawing in air,
• a recess formed in the upper wall to define a nose portion where a scrolling of the air passage starts,
• an air supply part communicating with a downstream side of the air passage in a flow of the air, the air supply part forming an air supply space to supply a part of the air flowing through the air passage to the electric motor, and
• a communication hole that causes an inside space of the recess and the air passage to communicate with each other without going through the air supply part, and
• the air supply part has an intrusion suppressing portion configured to suppress entry of water into the air supply space.