Air-conditioning equipment for vehicles
First Claim
1. Air-conditioning equipment for vehicles, comprising a casing having an inlet port and an outlet port arranged in positions approximately opposite from each other and being internally provided with a cylindrical impeller arranged horizontally perpendicularly to a direction in which said inlet port and said outlet port are connected, a rear guide formed above said cylindrical impeller and a stabilizer formed below said cylindrical impeller, whereina minimum gap dimension t1 between said cylindrical impeller and said stabilizer on the outlet port side,an angle between a straight line connecting a center of rotation of said cylindrical impeller and a position of the minimum gap dimension t1 on the outlet port side of said stabilizer and a horizontal plane,a minimum gap dimension t2 between said cylindrical impeller and said stabilizer on the inlet port side,an angle between a straight line connecting the center of rotation of said cylindrical impeller and a position of the minimum gap dimension t2 on the inlet port side of said stabilizer and a vertical plane have values chosen to prevent occurrence of a whistle noise and a surging noise,further wherein said dimension t1 is not smaller than 14% and not greater than 24% of an outer diameter of the cylindrical impeller,said angle "a" is not smaller than 38°
- and not greater than 43°
,said dimension t2 is not smaller than 7% and not greater than 13% of the outer diameter of the cylindrical impeller, andsaid angle "b" is not smaller than 11° and
not greater than 15°
.
1 Assignment
0 Petitions
Accused Products
Abstract
In a casing (11), a rear guide (23) is formed above a cylindrical impeller (13) and a stabilizer (24) is formed below the impeller. A minimum gap dimension between the cylindrical impeller (13) and the stabilizer (24) on the outlet port (17) side has a value of 14% to 24% of the outer diameter of the cylindrical impeller (13). An angle between a straight line connecting the center of rotation of the cylindrical impeller (13) and a minimum gap position on the outlet port (17) side of the stabilizer (24) and the horizontal plane has a value of 38° to 43°. A minimum gap dimension between the cylindrical impeller (13) and the stabilizer (24) on the inlet port (16) side has a value of not smaller than 7% of the outer diameter of the cylindrical impeller (13). An angle between a straight line connecting the center of rotation of the cylindrical impeller (13) and a minimum gap position on the inlet port (16) side of the stabilizer (24) and the vertical plane has a value of 11° to 15°.
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Citations
7 Claims
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1. Air-conditioning equipment for vehicles, comprising a casing having an inlet port and an outlet port arranged in positions approximately opposite from each other and being internally provided with a cylindrical impeller arranged horizontally perpendicularly to a direction in which said inlet port and said outlet port are connected, a rear guide formed above said cylindrical impeller and a stabilizer formed below said cylindrical impeller, wherein
a minimum gap dimension t1 between said cylindrical impeller and said stabilizer on the outlet port side, an angle between a straight line connecting a center of rotation of said cylindrical impeller and a position of the minimum gap dimension t1 on the outlet port side of said stabilizer and a horizontal plane, a minimum gap dimension t2 between said cylindrical impeller and said stabilizer on the inlet port side, an angle between a straight line connecting the center of rotation of said cylindrical impeller and a position of the minimum gap dimension t2 on the inlet port side of said stabilizer and a vertical plane have values chosen to prevent occurrence of a whistle noise and a surging noise, further wherein said dimension t1 is not smaller than 14% and not greater than 24% of an outer diameter of the cylindrical impeller, said angle "a" is not smaller than 38° - and not greater than 43°
,said dimension t2 is not smaller than 7% and not greater than 13% of the outer diameter of the cylindrical impeller, and said angle "b" is not smaller than 11° and
not greater than 15°
. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- and not greater than 43°
Specification