Other

General Electric Company

Sntech Inc.

Stirling Technology, Inc.

Sulfstede Consulting Services, Inc.

Louis Sulfstede

Brian Lee Beifus

Kamron Mark Wright

Glen C Young

Catherine J Chagnot

Jordan Bass

Jason Morosko

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.

Speed-defined torque control

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.

Heat and energy recovery ventilators and methods of use

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.

Air conditioning diagnostic analyzer

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.

Methods and apparatus for selecting an electronically commutated motor speed

Growing community of inventors

Irving, TX, United States of America

Louis Sulfstede