Company Filing History:
Years Active: 1996-1997
Title: Innovations by Gerald L Greschl
Introduction
Gerald L Greschl is a notable inventor based in Dayton, OH (US), recognized for his contributions to the field of heating and cooling systems. With a total of 4 patents to his name, Greschl has made significant advancements that enhance the efficiency and reliability of HVAC systems.
Latest Patents
Greschl's latest patents focus on diagnostics for heating and cooling systems. One of his innovations involves using compressor discharge temperature, ambient outdoor air temperature, and thermal load as control parameters for managing the expansion valve setting and indoor fan speed. This diagnostic system monitors feedback signals from the fan motor to detect issues such as fan over-speed and decreased airflow due to a dirty indoor air filter. Additionally, it tracks the discharge pressure of the compressor to identify blocked outdoor fans and monitors the difference between actual and optimum compressor discharge temperatures and suction pressure to detect problems like a stuck-closed expansion valve or low refrigerant charge. Furthermore, Greschl's work limits compressor 'short-cycling' to enhance the reliability of the compressor. Another significant patent involves a heating and cooling system with a variable capacity compressor, where the thermal load parameter controls the compressor capacity based on room temperature and thermostat setpoint.
Career Highlights
Greschl is currently employed at Copeland Corporation, where he continues to innovate and improve HVAC technologies. His work has been instrumental in developing systems that are not only efficient but also user-friendly.
Collaborations
Some of Greschl's notable coworkers include Vijay O Bahel and Hank E Millet, who have collaborated with him on various projects within the company.
Conclusion
Gerald L Greschl's contributions to the HVAC industry through his innovative patents demonstrate his commitment to improving heating and cooling systems. His work continues to influence the field, ensuring greater efficiency and reliability in climate control technologies.