Evaporator scroll for blower wheel
First Claim
1. Apparatus for radially distributing the flow leaving a centrifugal blower wheel that includes:
- a housing having a vertical front wall and a spaced apart vertical rear wall, said housing further including a blind opening passing inwardly through the front wall, so that the walls of the opening are perpendicular to the rear wall of the housing;
said opening containing an upper section that extends horizontally across said housing and a volute shaped lower section that opens into the upper section through a bottom wall of said upper section;
a blower wheel having radial or rearwardly curved blades mounted for rotation in said lower section of the opening about a horizontal axis;
said lower section of the housing opening containing a spiral shaped wall having a proximal end and a distal end, said proximal end of said spiral wall intersecting the bottom wall of said upper section adjacent to said blower wheel to form a restricted cutoff region between the blower wheel and the lower section of the opening, said spiral being centered about on the axis of said blower wheel and increasing from cutoff region through about 200°
of arc to the distal end of said spiral wall, and an inclined wall that is tangent to the spiral wall at the distal end thereof, said inclined wall passing upwardly to intersect the bottom wall of said upper section of said opening to form an expanded exit region between the upper and lower sections of the opening.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus for radially distributing the flow leaving a centrifugal blower wheel and discharging the flow of conditioned air over the top of the indoor coil of an air conditioner unit back into the comfort region. A housing is positioned adjacent to the coil that contains a blower wheel having radially or rearwardly curved blades within a blind opening that passes inwardly from the vertical front wall of the housing. The opening has an upper section that extends across the top of the coil and a lower section that surrounds the blower wheel. The lower section includes a spiral shaped wall that connects to a linear wall that are arranged to coact with the blower to distribute air from the blower uniformly across the upper section of the opening.
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Citations
16 Claims
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1. Apparatus for radially distributing the flow leaving a centrifugal blower wheel that includes:
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a housing having a vertical front wall and a spaced apart vertical rear wall, said housing further including a blind opening passing inwardly through the front wall, so that the walls of the opening are perpendicular to the rear wall of the housing;
said opening containing an upper section that extends horizontally across said housing and a volute shaped lower section that opens into the upper section through a bottom wall of said upper section;
a blower wheel having radial or rearwardly curved blades mounted for rotation in said lower section of the opening about a horizontal axis;
said lower section of the housing opening containing a spiral shaped wall having a proximal end and a distal end, said proximal end of said spiral wall intersecting the bottom wall of said upper section adjacent to said blower wheel to form a restricted cutoff region between the blower wheel and the lower section of the opening, said spiral being centered about on the axis of said blower wheel and increasing from cutoff region through about 200°
of arc to the distal end of said spiral wall, andan inclined wall that is tangent to the spiral wall at the distal end thereof, said inclined wall passing upwardly to intersect the bottom wall of said upper section of said opening to form an expanded exit region between the upper and lower sections of the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. In an air conditioning unit having an indoor section that is separated from an outdoor section by a dividing wall, and wherein each section contains a heat exchanger and a means for moving air over the heat exchanger surface, apparatus for directing conditioned air from the indoor section into the comfort area serviced by the unit wherein said apparatus includes:
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a housing mounted adjacent to the indoor heat exchanger in parallel alignment with the back of said heat exchanger, said housing having a vertical front wall facing the heat exchanger and a spaced apart vertical rear wall, said housing further including a blind opening passing inwardly through said front wall so that the walls of said opening are perpendicular to the rear wall, said opening containing an upper section that extends horizontally above the top of the indoor heat exchanger and a volute shaped lower section that opens into the upper section through a bottom wall of said upper section, a blower wheel having radial or rearwardly curved blades mounted for rotation in the lower section of said opening about a horizontal axis so that the blower draws conditioned air from said indoor heat exchanger;
said lower section of said opening containing a spiral shaped wall having a proximal end and a distal end, said proximal end intersecting the bottom wall of said upper section of the opening to form a restricted region between the blower wheel and the lower section of the opening, said spiral being centered about on the axis of the blower wheel and increasing from the proximal end to the distal end of said spiral wall through about 200°
of arc, and an inclined wall that is tangent to the distal end of said spiral wall and which inclines upwardly to intersect the bottom wall of said upper section of said housing to form an expanded discharge region between the blower wheel and the lower section of the opening whereby comfort air drawn into the housing is distributed uniformly across the upper section of the opening and discharged over the top of the heat exchanger from the unit.- View Dependent Claims (9, 10, 11, 12, 13, 14, 16)
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Specification