Blower device and vehicular air-conditioning device

Abstract

The present invention provides a blower device and a vehicular air-conditioning device including a chamber taking therein a part of the air through a flow path portion so as to cool a motor, whereby water drop is prevented from reaching the motor with higher reliability. This air blower includes: a casing ( 11 ) including an air intake port ( 23 ), an air discharge port, and a discharge flow path portion ( 31 ) communicating between the air intake port ( 23 ) and the air discharge port; a scroll fan ( 22 ) provided in the casing ( 11 ) so as to take in the air from the air intake port ( 23 ) and generate an air flow to the air discharge port through the discharge flow path portion ( 31 ); a motor ( 21 ) rotationally driving the scroll fan ( 22 ); and a motor cooling unit ( 50 ) cooling the motor ( 21 ). The motor cooling unit ( 50 ) includes a chamber ( 51 ) taking therein a part of the air from the discharge flow path portion ( 31 ) and a cooling duct ( 52 ) having an opening portion ( 57 a ) which opens into the chamber ( 51 ) at one end and supplying, to the motor ( 21 ), the air in the chamber ( 51 ) taken in through the opening portion ( 57 a ). The ceiling portion ( 55 A) of the chamber ( 51 ) has an inclined surface ( 59 ) which is inclined downward from above.

1 - 4 . (canceled) 
     
     
         5 . A blower device comprising:
 a casing comprising an air intake port, an air discharge port, and a flow path portion communicating between the air intake port and the air discharge port;   a fan taking in air from the air intake port and generating an air flow to the air discharge port through the flow path portion;   a motor rotationally driving the fan; and   a motor cooling unit cooling the motor,   the motor cooling unit comprising a chamber communicating with the flow path portion through an opening formed in a side wall on the fan side of the casing, which forms the flow path portion and taking therein a part of the air from the flow path portion, and   a duct having an opening portion that opens into the chamber and supplying, to the motor, the air in the chamber taken in through the opening portion, and   a ceiling portion of the chamber having an inclined surface that is inclined downward from above.   
     
     
         6 . The blower device according to  claim 5 , wherein the inclined surface is formed at least vertically above the opening portion. 
     
     
         7 . The blower device according to  claim 5 , wherein the inclined surface is formed into an umbrella shape that is gradually inclined downward to a radially outer portion from a central portion of the ceiling portion. 
     
     
         8 . A vehicular air-conditioning device comprising the blower device according to any one of  claim 5 . 
     
     
         9 . The blower device according to  claim 7 , wherein the inclined surface is formed into an umbrella shape that is gradually inclined downward to a radially outer portion from a central portion of the ceiling portion. 
     
     
         10 . A vehicular air-conditioning device comprising the blower device according to  claim 6 . 
     
     
         11 . A vehicular air-conditioning device comprising the blower device according to  claim 7 . 
     
     
         12 . A vehicular air-conditioning device comprising the blower device according to  claim 9 .