Blower housing
AssigneeTrane International Inc.
InventorStephen S. Hancock
Life of this patent
Estimating the term…
Abstract
A blower housing has a discharge direction, an axis of rotation, a polar axis that intersects the axis of rotation and is substantially perpendicular to the discharge direction, and an angular sweep of increasing fluid flow area. The fluid flow area, A, increases with increasing angular magnitude, Φ, as a function comprising at least a functional component that is at least one of (1) equal to, (2) substantially mathematically reducible to, and (3) substantially mathematically analogous to the equation, A ( Φ ) = A co + R ( 1 - 1 - [ ( r i ) ( Φ ) R ] 2 ) , where Aco is a minimum fluid flow area, R is a radius of a first circle, and ri is a radius of a second circle that is smaller than the first circle.
Claims20
A blower housing, comprising:
- a discharge direction;
- an axis of rotation;
- a polar axis that intersects the axis of rotation and is substantially perpendicular to the discharge direction;
- and
- an angular sweep of increasing fluid flow area, wherein the fluid flow area, A, increases with increasing angular magnitude, Φ, as a function comprising at least a functional component that is at least one of (1) equal to, (2) substantially mathematically reducible to, and (3) substantially mathematically analogous to the equation,
- A
-
- (
- Φ
- )
- =
- A
- co
- +
- R
- (
- 1
- -
- 1
- -
- [
- (
- r
- i
- )
-
- (
- Φ
- )
- R
- ]
- 2
- )
- ,
- wherein Aco is a minimum fluid flow area, R is a radius of a first circle, and ri is a radius of a second circle that is smaller than the first circle.
A method of moving air, comprising:
- receiving fluid into a centrifugal blower;
- and
- moving the fluid along an angular path of increasing fluid flow area, wherein the fluid flow area, A, increases with increasing angular magnitude, Φ, as a function comprising at least a functional component that is at least one of (1) equal to, (2) substantially mathematically reducible to, and (3) substantially mathematically analogous to the equation,
- A
-
- (
- Φ
- )
- =
- A
- co
- +
- R
- (
- 1
- -
- 1
- -
- [
- (
- r
- i
- )
-
- (
- Φ
- )
- R
- ]
- 2
- )
- ,
- and wherein Aco is a minimum fluid flow area, R is a radius of a first circle, and ri is a radius of a second circle that is smaller than the first circle.
A centrifugal blower housing, comprising:
- a first sidewall comprising a first inlet;
- a second sidewall substantially opposite the first sidewall, the second sidewall comprising a second inlet;
- a radial wall joining the first sidewall to the second sidewall, the radial wall comprising a discharge;
- a discharge direction;
- and
- a polar axis that intersects an axis of rotation of the blower housing and extends substantially perpendicular to the discharge direction;
- wherein a fluid flow area, A, of the blower housing is increased with increasing angular position, Φ, over a first angular sweep as a function comprising at least a functional component that is at least one of (1) equal to, (2) substantially mathematically reducible to, and (3) substantially mathematically analogous to the equation,
- A
-
- (
- Φ
- )
- =
- A
- co
- +
- R
- (
- 1
- -
- 1
- -
- [
- (
- r
- i
- )
-
- (
- Φ
- )
- R
- ]
- 2
- )
- ,
- wherein Aco is a minimum fluid flow area, R is a radius of a first circle, and ri is a radius of a second circle that is smaller than the first circle.
Dependencies are inferred from the claim text.