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:
Jan. 19, 2021
Filed:
Jul. 06, 2018
Johnson Controls Technology Company, Auburn Hills, MI (US);
Robert D. Turney, Watertown, WI (US);
Liming Yang, Mequon, WI (US);
Yunrui Wang, Milwaukee, WI (US);
Yasutaka Yoshida, Shizuoka, JP;
Kazumoto Urata, Shizuoka, JP;
Timothy I. Salsbury, Mequon, WI (US);
John M. House, Saint-Leonard, CA;
Johnson Controls Technology Company, Auburn Hills, MI (US);
Abstract
A variable refrigerant flow (VRF) system for a building includes a plurality of outdoor VRF units configured to heat or cool a refrigerant for use in heating or cooling the building and an extremum-seeking controller. The extremum-seeking controller is configured to determine a total power consumption of the plurality of outdoor VRF units, generate a pressure setpoint for the plurality of outdoor VRF units using an extremum-seeking control technique that drives the total power consumption toward an extremum, and use the pressure setpoint to operate the plurality of outdoor VRF units.