Claims
- 1. A housing for a fan that rotates about an axis of rotation to draw air into the housing and discharge air from the housing, the fan axis of rotation defining mutually perpendicular axial and radial directions relative to the housing, the housing comprising:a housing section having a top wall with a peripheral edge, a side wall that extends around at least a portion of the top wall peripheral edge, a bottom wall that is spaced axially from the top wall by the side wall, and a tubular transition that extends outwardly from the side wall to a distal end of the transition that defines a discharge opening of the transition, the tubular transition projecting from the housing section in a direction axially away from the bottom wall toward the top wall to the transition distal end and a direction radially away from the side wall to the transition distal end; the tubular transition has first and second separate sections that each extend outwardly from the side wall in the same direction axially away from the bottom wall and radially away from the side wall to the transition distal end; and, the housing bottom wall comprises means for attaching the housing to a furnace.
- 2. The housing of claim 1, further comprising:the housing section has an interior volume between the top wall and the bottom wall and the tubular transition has an interior bore that extends from the interior volume to the discharge opening in the direction axially away from the bottom wall and radially away from the side wall.
- 3. The housing of claim 1, further comprising:the first and second sections each have attachment members that extend along the first and second sections in the direction axially away from the bottom wall and radially away from the side wall.
- 4. A housing for containing a fan that rotates about an axis of rotation to draw air into the housing and discharge the air from the housing, the fan axis of rotation defining mutually perpendicular axial and radial directions relative to the housing, the housing comprising:a housing section having a top wall with a peripheral edge, a side wall that extends around at least a portion of the top wall peripheral edge, a bottom wall that extends around at least a portion of the side wall and is spaced axially from the top wall by the side wall, and a transition section that extends outwardly from the top wall and the side wall to a distal end of the transition that defines a discharge opening of the housing section, the transition section projects in a direction axially away from the top wall, the bottom wall, and the side wall to the distal end and the transition section projects in a direction radially away from the top wall and the side wall to the distal end; the bottom wall is a bottom wall flange that extends radially outward from the side wall; the bottom wall flange is positioned in a single plane and the transition section has a pair of flanges that project outwardly from opposite sides of the transition section and are each oriented at an angle relative to the plane of the bottom wall flange; and, the housing bottom wall comprises means for attaching the housing to a furnace.
- 5. The housing of claim 4, further comprising:the side wall and bottom wall flange both have a volute shape.
- 6. The housing of claim 4, further comprising:the housing has an interior volume defined between the top wall and the bottom wall flange and a fan is positioned in the interior volume between the top wall and the bottom wall flange.
- 7. The housing of claim 4, further comprising:the transition section flanges each project in the direction axially away from the bottom wall flange and in the direction radially away from the bottom wall flange.
- 8. The housing of claim 4, further comprising:at least one of the transition section flanges is a continuous extension of the bottom wall flange.
- 9. The housing of claim 4, further comprising:a bottom housing piece is connectable to the bottom wall to enclose an interior volume of the housing between the top wall and the bottom housing piece.
- 10. A housing for containing a fan that rotates about an axis of rotation to draw air into the housing and discharge the air from the housing, the fan axis of rotation defining mutually perpendicular axial and radial directions relative to the housing, the housing comprising:a housing section having a top wall with a peripheral edge, a side wall that extends around at least a portion of the top wall peripheral edge, a bottom wall that extends around at least a portion of the side wall and is spaced axially from the top wall by the side wall, and a transition section that extends outwardly from the top wall and the side wall to a distal end of the transition that defines a discharge opening of the housing section, the transition section projects in a direction axially away from the top wall, the bottom wall, and side wall to the distal end and the transition section projects in a direction radially away from the top wall and the side wall to the distal end, the housing section being stamped from a metallic blank to form the top wall, side wall, bottom wall and transition section; the transition section is a first transition section; a second transition section is connected to the first transition section, the second transition extends outwardly from the bottom wall to a distal end of the second transition section that together with the distal end of the first transition section defines a circular discharge opening, the second transition section projects in the same direction as the first transition section axially away from the bottom wall to the second transition section distal end and in the same direction as the first transition section radially away from the top wall and side wall to the second transition section distal end; and, the housing bottom wall comprises means for attaching the housing to a furnace.
- 11. The housing of claim 10, further comprising:the second transition section has a proximal end opposite the second transition section distal end and adjacent the housing section bottom wall.
- 12. The housing of claim 11, further comprising:the proximal end of the second transition section has a straight edge and the distal end of the second transition section has a semicircular edge.
- 13. The housing of claim 10, further comprising:the second transition section has a pair of flanges that project outwardly from opposite sides of the second transition section and are each oriented at an angle relative to the bottom wall.
- 14. The housing of claim 10, further comprising:the second transition section has a pair of flanges that each project in the direction axially away from the bottom wall and in the direction radially away from the bottom wall.
- 15. The housing of claim 11, further comprising:the second transition section proximal end is attached to a bottom housing piece that is connectable to the housing section bottom wall to enclose an interior volume of the housing between the top wall and the bottom housing piece.
Parent Case Info
This patent application is a continuation of patent application Ser. No. 09/651,645 filed Aug. 30, 2000 now U.S. Pat. No. 6,314,894.
US Referenced Citations (20)
Continuations (1)
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Number |
Date |
Country |
Parent |
09/651645 |
Aug 2000 |
US |
Child |
09/930016 |
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US |