The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2025
Filed:
Sep. 13, 2023
Robert J. Mowris, Olympic Valley, CA (US);
Robert J. Mowris, Olympic Valley, CA (US);
Abstract
A Non-invasive Temperature-based Diagnostic (NTD) method for evaluating Air Conditioning (AC) system faults based on Return-air Drybulb Temperature (RDT), Return-air Wetbulb Temperature (RWT), Supply-air Drybulb Temperature (SDT), Suction Temperature (ST), Liquid Temperature (LT), Outdoor-Air Temperature (OAT), Delta Temperature Split (DTS) equal to Actual Temperature Split (ATS) minus Required Temperature Split (RTS), and Liquid Over Ambient Temperature (LOA) equal to LT minus OAT. The method diagnoses proper Refrigerant Charge and Airflow (RCA) based on DTS and LOA or at least one AC system fault based on DTS, ST, and LOA. The processing order comprises at least one diagnostic selected from the group consisting of: low cooling capacity, condenser heat exchanger, refrigerant restriction, evaporator heat exchanger, proper RCA, refrigerant undercharge, overcharge, non-condensables, and low airflow. DTS is used to determine an undercharge amount. The ratio of ATS measured before and after correcting AC system faults is used to calculate an energy-efficiency improvement.