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:
Apr. 09, 2024
Filed:
Feb. 11, 2020
Belimo Holding Ag, Hinwil, CH;
Paul Guyer, Dürnten, CH;
Daniel Aeberli, Balterswil, CH;
BELIMO HOLDING AG, Hinwil, CH;
Abstract
A method for operating a control valve using an HVAC actuator is described, the method comprises a circuit of the HVAC actuator executing the steps of: monitoring (S) a rotation angle (ϕ) associated with a drive torque (M) applied by the HVAC actuator for moving the valve member; detecting (S) a blocking of the control valve, if the applied drive torque (M) effects a change of the rotation angle (Δϕ) which is smaller than a threshold angle (ϕ); upon detection of the blocking, controlling the HVAC actuator to repeatedly change the applied drive torque (M) between a first torque value (M) and a second torque value (M); and controlling the HVAC actuator to periodically modulate (S) the first torque value (M) between a third torque value and a fourth torque.