Regal Beloit America, Inc.

General Electric Company

Regal Beloit Australia Pty Ltd.

Kerry Baker Shelton

Subhash Marutirao Brahmavar

Rachele Barbara Cocks

Ludovic Andre Chretien

Joshua James Westhoff

Kamron Mark Wright

Lester Benjamin Manz

James L King

Peter Bruff Lytle

Harold Clifton Kingrey

Daniel Shawn Figgins

Jeffrey A Hall

Michael W Henry

Marshall Miers

Brian Lee Beifus

Robert K Hollenbeck

Greg Heins

Zachary Joseph Stauffer

Mark Thiele

Norman Carl Golm, Jr

Andrew Craig Barry

Rafal Pawel Rohoza

James E Grimm

Mohamad Khalil Dahouk

Joseph Stephen Carnes

David L Smith

Matthew James Kleist

Carter Delaney

Steve Long

A stator assembly for an electric motor assembly is provided. The stator assembly includes an annular body extending about a central axis. The annular body includes an inner surface and an outer surface. The annular body has a first thickness defined between the inner surface and the outer surface. The stator assembly also includes at least one stator tooth extending radially from the annular body. The at least one stator tooth includes a first tip spaced radially from the annular body. The at least one stator tooth has a second thickness. A ratio of the first thickness to the second thickness is at least about 1.1.

Stator assembly including stiffener and method of assembly thereof

A permanent magnet rotor core includes a plurality of rotor poles circumferentially-spaced about a central axis and including a first rotor pole and an adjacent second rotor pole that each include an outer wall, and wherein the rotor core includes a rotor diameter. The rotor core also includes a plurality of radial apertures alternately-spaced with the plurality of rotor poles. The rotor core also includes a first protrusion extending from the first rotor pole into a first radial aperture of the plurality of radial apertures positioned between the first rotor pole and the second rotor pole. The rotor core further includes a second protrusion extending from the second rotor pole into the first radial aperture such that a circumferential opening is defined between the first protrusion and the second protrusion. The opening extends a first length of between approximately 0.052% and approximately 0.058% of the rotor diameter.

Electric machines having a radially embedded permanent magnet rotor and methods thereof

An interior permanent magnet machine is described. The machine includes a rotor rotatable about a central machine axis. The rotor includes a plurality of permanent magnet openings and a plurality of permanent magnets disposed therein. The permanent magnet openings are separated by rotor webs configured to facilitate reducing leakage flux through the rotor webs. The machine also includes a stator disposed coaxially with the rotor and separated from the rotor by a circumferential air gap. The stator includes a plurality of stator teeth that define a plurality of stator slots therebetween. The stator teeth include a stator tooth tip configured to facilitate reducing cogging torque and torque ripple.

Methods, systems, and apparatus for reducing cogging torque in an electric machine

A centrifugal blower system includes a centrifugal blower assembly for generating airflow. The centrifugal blower assembly includes a housing, a motor coupled to the housing, and at least one impeller coupled to the motor. A motor controller is coupled to the motor. The motor controller is configured to receive at least one feedback parameter and to transmit instructions to the motor to control an operation of the motor based on the at least one feedback parameter. The operation of the motor is configured to reduce noise in the centrifugal blower system.

System and methods for reducing noise in an air moving system

A centrifugal blower assembly includes a housing defining an interior space and an impeller configured to channel an airflow within the interior space. The blower assembly also includes a motor coupled to the impeller and configured to rotate the impeller about an axis. The motor includes a motor shell and a motor mounting assembly coupled to the motor. The motor mounting assembly includes an end shield coupled to the motor and a plurality of mounting arms coupled to the end shield. At least a portion of at least one mounting arm extends axially along the motor such that a continuous radial gap is defined between the at least one mounting arm and the motor shell.

Centrifugal blower and method of assembling the same

An air handling system comprises a housing and a fan configured to circulate air. The housing comprises at least one wall defining a passageway for the air and at least one vortex generator coupled to the at least one wall. The at least one vortex generator extends partially into the passageway.

Systems for and methods of directing airflow in air handling systems

In one aspect, a centrifugal blower assembly is provided. The centrifugal blower assembly includes a housing defining an interior space and an impeller configured to channel an airflow within the interior space. A motor is coupled to the impeller and configured to rotate the impeller about an axis. The centrifugal blower also includes a plurality of mounting arms. Each mounting arm of the plurality of mounting arms includes a first end coupled to the housing and a second end coupled to the motor. Each mounting arm of the plurality of mounting arms has a cross-sectional profile that comprises a portion of an airfoil shape.

A centrifugal blower assembly includes a housing having an inner surface and an outer surface. The inner surface of the housing defines in part an interior space. The centrifugal blower also includes a first portion of texture applied to at least a first portion of at least one of the inner surface and the outer surface of the housing. The first portion of texture has a first height based at least in part on a local boundary layer height of an airflow moving across at least one of the inner surface and the outer surface respectively. The first portion of texture is configured to generate a turbulent flow within the airflow moving across the first portion of texture.

Centrifugal blower housing having surface structures, system, and method of assembly

An electric motor comprises a shaft, an interior magnet rotor core comprising a central bore and a pair of opposing ends faces, and at least one resilient structure inserted within the central bore between the pair of opposing end faces. The at least one resilient component is inserted within the central bore between the pair of opposing end faces such that the at least one resilient component does not extend beyond one of the opposing end faces. The resilient component comprises an outer rigid structure inserted within the central bore, a resilient component inserted within the outer rigid structure, and an inner rigid structure inserted within the resilient component, wherein the shaft is inserted through the inner rigid structure.

Resilient rotor assembly for interior permanent magnet motor

A method for manufacturing an interior magnet rotor core motor is described herein. The method includes attaching a resilient material to an inner rigid structure configured to engage a shaft associated with the motor, engaging the structure with the motor shaft, positioning the shaft and structure assembly with respect to the rotor core, and affixing the resilient material to the rotor core.

A fan assembly includes a vibration damping system to reduce induced vibrational energy generated as a result of fan motor operation. The vibration damping system includes a plurality of arms and damping material. The vibration damping system arms extend between a fan motor housing and a shroud assembly disposed circumferentially outward from the fan motor housing. The damping material is attached to an end of each of the vibration damping system arms and connects each arm to the shroud assembly. The damping material absorbs induced vibrational energy generated by fan motor operation.

Methods and apparatus for reducing vibrations induced within fan assemblies

A method of assembling a dynamoelectric machine. The dynamoelectric machine includes at least one end frame having a hub portion extending therefrom, and a cushioning device. The cushioning device has a pair of generally annular cylindric mounts associated generally concentrically with one of the mounts having an axial length greater than that of the other of the mounts, and a resilient material is interconnected between the mounts. In practicing this method, a part of the one mount is mounted in engagement about the hub, and thereby the other mount is disposed in a preselected position axially beyond the hub portion of the at least one end frame.

Method of assembling a dynamoelectric machine

A cushioning device for a dynamoelectric machine has a pair of generally annular cylindric mounts arranged generally concentrically with each other, and each mount has a pair of opposite end portions defining the axial length thereof, with the axial length of one of the mounts being predeterminately greater than that of the other of the mounts. A resilient material is interconnected between the mounts, and the resilient material extends from at least adjacent one of the opposite end portions of the mounts generally axially beyond the other of the opposite end portions of the other mount toward the other of the opposite end portions of the one mount. A dynamoelectric machine is also disclosed.

Growing community of inventors

Fort Wayne, IN, United States of America

Kerry Baker Shelton