Eaton Corporation

Eaton Intelligent Power Limited

Other

Matthew Gareld Swartzlander

Kartikeya K Mahalatkar

Michael John Froehlich

Gopal Kishanrao Kulkarni

Daniel Robert Ouwenga

Sheetalkumar Patil

Michael E Coates

Andrew W Suman

Justin L Keiffer

Rodney Champlin Glover

Eric J Locker

Sunil Kumar Kunche

Timothy Michael Kish

Andrew Scott Meyers

Sneha Abhyankar

Ravikumar Sara

Kok Cheung Li

Andrew William Fedewa

Kartikeya Krishnoji Mahalatkar

Pavan Chandras

Craig E Sell

Rajeshekhar G Bagalakoti

Girish Sudhir Kulkarni

A blower may include a blower housing that may include a plurality of rotor chambers and a plurality of rotors. The plurality of rotors may be substantially identical and each may include a twist angle and a helix angle. The rotors and the blower housing may be configured to create internal fluid compression when the rotors are rotating at a first rotational speed and not to create internal fluid compression when the rotors are rotating at a second rotational speed. The rotors and the blower housing may be configured to create the internal fluid compression without backflow slots in the blower housing. The twist angle may include the angular displacement of lobes of the plurality of rotors between axial ends of the plurality of rotors. The helix angle may be a function of the twist angle and a pitch diameter of the plurality of rotors.

Optimized helix angle rotors for roots-style supercharger

A supercharger rotor comprising a plurality of lobes around a center axis, each lobe of the plurality of lobes comprising a rotor profile. The rotor profile comprises a tip, a convex addendum comprised of at least two interpolated and stitched spline curves, an undercut region, and a root base.

Hybrid profile supercharger rotors

A thermal abatement system comprises an axial inlet, radial outlet supercharger. A main case comprises at least two rotor bores, an inlet plane and an outlet plane. The inlet plane is perpendicular to the outlet plane. An inlet wall comprises an inner surface. Two rotor mounting recesses are in the inner surface, and the inlet wall is parallel to the inlet plane. An outlet is in the outlet plane. An inlet is in the inlet plane. At least two rotors are configured to move air from the inlet to the outlet. The main case comprises at least two backflow ports. An intercooler is connected to receive air expelled from the supercharger, to cool the received air, and to expel the cooled air to the at least two back flow ports.

Thermal abatement systems

A method of designing a supercharger that yields a high isometric efficiency based on a fixed pressure ratio, a plurality of rotor leads and a plurality of rotor operating speeds is provided. An efficiency map is generated of rotor lead versus rotor operating speeds for the fixed pressure ratio. A rotor lead value is determined based on the fixed pressure ratio and rotor speed combination from the efficiency map that yields a high isometric efficiency. A supercharger is provided having the determined rotor lead and that is configured to operate with the fixed pressure ratio and the determined rotor operating speed.

Method of optimizing supercharger performance

A method of treating, tuning, assembling, and/or overhauling a twin rotor device () includes applying a coating material () on an internal set of working surfaces () of the twin rotor device when at least partially assembled. The coating may be factory or field applied to a new or used twin rotor device. The working surfaces may be uncoated or previously coated and may be built-up as the coating material forms a coating () on at least some of the working surfaces. Manufacturing variations of a pair of rotors () and a housing () may be compensated by the coating. One or more performance characteristics of the twin rotor device may be improved by the coating, and variation between a series of twin rotor device may be reduced or substantially eliminated. The coating may reduce internal leakage and increase volumetric efficiency of the twin rotor device. The twin rotor device may be a supercharger, a screw compressor, or other twin rotor device.

Twin rotor devices with internal clearances reduced by a coating after assembly, a coating system, and methods

A supercharger outlet resonator comprises a housing, a first surface comprising a first opening and a housing axis bisecting the first opening, and a second surface comprising a second opening, the second surface located parallel to the first surface. A channel is perpendicular to the housing axis and connects the first opening to the second opening. The channel comprises at least one sidewall. An envelope is fluidly separated from the channel by the at least one sidewall, the envelope at least partially surrounds the channel, and the envelope extends from the first surface to the second surface. The envelope comprises a third opening and at least one second sidewall. A noise-reducing material located on the housing.

Supercharger outlet resonator

Supercharger housing

A supercharger assembly has a rotor housing defining a chamber. A rotor is within the chamber and has an end with an end face. A seal has a seal face adjacent the end face. The seal face and the end face have complex topographies configured to be complementary to define a gap therebetween. The complex topographies can be, but are not limited to, interfitting concentric annular channels. The gap functions as a tortuous flow path to inhibit fluid flow past the end face. A method of manufacturing a supercharger assembly is also provided.

Supercharger assembly with rotor end face seal and method of manufacturing a supercharger assembly

A Roots-type blower may include first and second meshed, lobed rotors disposed in first and second chambers of a housing. Each lobe may have first and second axially facing end surfaces defining a twist angle that may be a function, at least partially, of the number of lobes on each rotor. A blower housing may include a bearing plate that may include one or more internal pressure relief ports. A pressure relief port may be configured to relieve fluid pressure from a trapping area that may form between first and second meshed rotors.

A Roots-type blower has first and second meshed, lobed rotors disposed in first and second chambers of a housing. Each lobe has first and second axially facing end surfaces defining a twist angle that is a function, at least partially, of the number of lobes on each rotor, and each lobe further defines a helix angle that is a function of the twist angle and an axial length between the first and second axially facing end surfaces of said lobe. The lobes cooperate with an adjacent surface of the housing to define at least one blowhole that defines a control volume, occurs in a cyclic manner, and moves linearly in a direction toward the outlet port. The blowhole provides communication between adjacent control volumes.

A supercharger is provided that includes a housing having a first end and a second end. The housing may at least partially define a chamber and may include at least one rotor disposed within the chamber. The supercharger includes an inlet port proximate the first end of the housing and an outlet port proximate the second end of the housing. The supercharger further includes a relief chamber in fluid communication with the chamber. In an embodiment, the relief chamber may extend in the axial direction and may have a depth in the axial direction that is equal to at least about 10% of the axial length of the rotor.

High efficiency supercharger outlet

A method of designing rotors for a Roots blower comprising a housing having cylindrical chambers, the housing defining an outlet port (). The blower includes meshed, lobed rotors () disposed in the chambers, each rotor including a plurality N of lobes (), each lobe having first () and second () axially facing end surfaces. Each lobe has its axially facing surfaces defining a twist angle (TA), and each lobe defines a helix angle (HA). The method of designing the rotor comprises determining a maximum ideal twist angle (TA) for the lobe as a function of the number N of lobes on the rotor, and then determining a helix angle (HA) for each lobe as a function of the maximum ideal twist angle (TA) and an axial length (L) between the end surfaces of the lobe. A rotor designed in accordance with this method is also provided.

Growing community of inventors

Battle Creek, MI, United States of America

Matthew Gareld Swartzlander