Water Heater Blower Assembly Having a Low Exhaust Port

    公开(公告)号:US20170363323A1

    公开(公告)日:2017-12-21

    申请号:US15349674

    申请日:2016-11-11

    CPC classification number: F24H9/0031 F23L5/02 F23L17/005 F24H1/205

    Abstract: A draft inducer blower assembly for use with a water heater has a housing, a motor, and a fan. The housing has an exhaust volute surrounding the fan and a base adapted to be mounted atop a water heater. The base has an inlet port adapted to receive exhaust gas from the water heater. The fan is connected to the motor for rotation about a rotation axis. The exhaust volute and the base are non-adjustably fixed relative to each other. The exhaust volute has a cut-off at a cut-off angle relative to the rotation axis. The exhaust volute has an exhaust outlet passageway that extends to an exhaust port. The exhaust port is lower than the top of the exhaust volute.

    Water Heater Blower Assembly Having a Low Exhaust Port

    公开(公告)号:US20170363322A1

    公开(公告)日:2017-12-21

    申请号:US15183040

    申请日:2016-06-15

    CPC classification number: F24H9/0031 F23L17/005 F24H1/205

    Abstract: A draft inducer blower assembly for use with a water heater has a housing, a motor, and a fan. The housing has an exhaust volute surrounding the fan and a base adapted to be mounted atop a water heater. The base has an inlet port adapted to receive exhaust gas from the water heater. The fan is connected to the motor for rotation about a rotation axis. The exhaust volute and the base are non-adjustably fixed relative to each other. The exhaust volute has a cut-off at a cut-off angle relative to the rotation axis. The cut-off angle extends at an angle that is no more than twenty degrees positive from horizontal. The exhaust volute has an exhaust outlet passageway that extends to an exhaust port. The exhaust outlet passageway extends beneath the cut-off before reaching the exhaust port.

    Fan impeller blade
    538.
    发明授权

    公开(公告)号:US09765793B2

    公开(公告)日:2017-09-19

    申请号:US14318906

    申请日:2014-06-30

    CPC classification number: F04D29/283 F04D17/04 F04D29/30

    Abstract: A centrifugal fan impeller includes a front endring, a rear endring, and a plurality of blades coupled between the front and the rear endrings. At least one blade of the plurality of blades includes a blade span extending between the front endring and the rear endring, a leading edge, and a trailing edge. The at least one blade further includes a first elliptical cross-sectional profile extending between the leading and the trailing edges.

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