Louis E Sulfstede

US Patent:

6369536, Apr 9, 2002

Filed:

Dec 22, 2000

Appl. No.:

09/747868

Inventors:

Brian L. Beifus - Fort Wayne IN
Louis Sulfstede - Irving TX
Kamron M. Wright - Fort Wayne IN
Glen C. Young - Fort Wayne IN

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02K 2300

US Classification:

318254, 318439, 318567, 318569, 318138

Abstract:

An electronically commutated motor assembly permits a user to select discrete operating speed options to operate an electronically commutated motor. The assembly includes a motor, an input/output unit electrically connected to the motor, a connector and board and a microprocessor. The connector and board includes an electrically erasable programmable read-only memory (EEPROM), a plurality of low voltage signal connections for programming the EEPROM, and a plurality of speed signal connections for selecting an operating speed for the electronically commutated motor. The low voltage signal connections permit the EEPROM to be programmed with speed tables containing schedules of operating speeds.

US Patent:

6826454, Nov 30, 2004

Filed:

Sep 19, 2001

Appl. No.:

09/955659

Inventors:

Louis E. Sulfstede - Irving TX 75063

International Classification:

G01M 138

US Classification:

700276, 702183

Abstract:

A diagnostic apparatus for analyzing a motor of a heating, ventilation, and air conditioning (HVAC) system. The diagnostic apparatus includes a portable control unit which is detachably coupled to the HVAC system. The control unit can monitor, generate and simulate all control functions associated with the HVAC system.

US Patent:

7841381, Nov 30, 2010

Filed:

Apr 22, 2005

Appl. No.:

11/112979

Inventors:

Catherine J. Chagnot - Athens OH, US
Jason Morosko - Athens OH, US
Louis Sulfstede - Irving TX, US

Assignee:

Stirling Technology, Inc. - Athens OH
Sulfstede Consulting Services, Inc. - Irving TX

International Classification:

F24F 7/08

US Classification:

165 8, 165 54, 165909, 62262, 62263, 312236

Abstract:

An energy recovery ventilator and method for monitoring and maintaining an environmental condition inside a structure such as a house, building, or dwelling is provided. The ventilator may include a housing having mating halves of a molded polymeric material, first and second chambers disposed within the housing to convey separate first and second streams of air, a heat exchanger configured to intersect the first and second chambers, a first fan to circulate the first air stream through the first chamber, a second fan to circulate the second air stream through the second chamber, and a fan motor driving the first and second fans. The ventilator may also be configured to prevent frost build-up in or on the energy ventilator, to provide efficient cooling, and maintain one or more desired environmental conditions.

US Patent:

8587233, Nov 19, 2013

Filed:

Jan 24, 2011

Appl. No.:

13/012647

Inventors:

Jordan Bass - Phoenix AZ, US
Louis Sulfstede - Irving TX, US

Assignee:

SNTech, Inc. - Phoenix AZ

International Classification:

H02P 6/04

US Classification:

31840011, 31840001, 31840012, 31840015

Abstract:

Motors, such as DC motors, and methods and systems for operating a motor, are described. The motor is optionally an electronically commutated motor. The motor comprises one or more electromagnets and a controller device to control the electromagnets. The controller device is configured to calibrate the motor operation in a desired installation to determine the torque needed to achieve a desired operating speed by causing the motor to ramp up to the desired speed, measuring an electric current needed to operate the motor at the desired speed, and setting a value corresponding to a first speed tap using the measured electric current. The controller device is configured to operate the motor in a substantially constant torque mode using the set value at least after the completion of the calibration operation. The motor may be configured for use in a ventilation system, such as an HVACR system.

US Patent:

20030042860, Mar 6, 2003

Filed:

Sep 4, 2002

Appl. No.:

10/234264

Inventors:

Louis Sulfstede - Irving TX, US

International Classification:

H02P007/00

US Classification:

318/432000

Abstract:

A system and method of controlling airflow within an air delivery system. The method begins by identifying and measuring a particular air conditioning system's blower characteristics. A mathematical relationship for finding a particular CFM based on torque and speed is developed utilizing several discrete airflows within regions or bins within a designated range. The mathematical model is employed by a controller of the air conditioning system for controlling CFM. Additionally, the method may optionally change from an airflow control mode to a blower speed or torque control mode when restrictions are placed upon the air conditioning system.

US Patent:

20050280384, Dec 22, 2005

Filed:

Aug 23, 2005

Appl. No.:

11/209923

Inventors:

Louis Sulfstede - Irving TX, US

International Classification:

H02P007/00

US Classification:

318432000

Abstract:

A system and method of controlling airflow within an air delivery system. The method begins by identifying and measuring a particular air conditioning system's blower characteristics. A mathematical relationship for finding a particular CFM based on torque and speed is developed utilizing several discrete airflows within regions or bins within a designated range. The mathematical model is employed by a controller of the air conditioning system for controlling CFM. Additionally, the method may optionally change from an airflow control mode to a blower speed or torque control mode when restrictions are placed upon the air conditioning system.

US Patent:

53260279, Jul 5, 1994

Filed:

Nov 12, 1991

Appl. No.:

7/790031

Inventors:

Louis E. Sulfstede - Tyler TX

Assignee:

American Standard Inc. - New York NY

International Classification:

B05D 2300
F24F 1102

US Classification:

236 51

Abstract:

A self configuring air conditioning system. The system includes a system controller for an air conditioning system operably connected to a compressor and an expansion valve, a first portable wireless remote controller for providing commands and information to the system controller by wireless transmission, and a second portable wired remote controller for providing commands and information to the system controller by wired transmission. The system further includes a wireless receiver operably connected to the system controller for receiving wireless remote transmissions from the first portable wireless remote controller, and an interface operably connected to the system controller for receiving wired remote transmissions from the second wired remote controller. The system also includes means, operatively associated with the system controller and responsive to the interface, for automatically establishing a first air conditioning system operating configuration if the wired remote controller is present, and for establishing a second air conditioning system operating configuration if the wired remote controller is absent.

US Patent:

48562866, Aug 15, 1989

Filed:

Sep 1, 1988

Appl. No.:

7/240418

Inventors:

Louis E. Sulfstede - Tyler TX
Robert W. Helt - Tyler TX
Thomas E. Jensen - Tyler TX

Assignee:

American Standard Inc. - New York NY

International Classification:

F25B 100

US Classification:

62 89

Abstract:

A variable capacity refrigeration system includes a control scheme having three interrelated closed loops. The system includes a refrigeration system controller and at least one variable speed, electronically commutated DC motor driving a compressor. In the first closed loop, the controller supplies a speed command signal to a motor drive which governs the speed of the motor driven compressor. The speed of the compressor varies the system's capacity to condition the temperature of a comfort zone. A temperature sensor in the zone provides a temperature feedback signal to the controller to complete the first closed loop. In the second closed loop, the speed command signal from the controller is varied in response to a speed feedback signal received from a compressor drive which includes both the motor and the motor drive. The third closed loop is between the motor drive and the motor. The motor drive electronically commutates the motor as it delivers an electrical supply to the motor in response to a position feedback signal generated from within the motor.