公开(公告)号：US20220275963A1

公开(公告)日：2022-09-01

申请号：US17187175

申请日：2021-02-26

Applicant: Johnson Controls Technology Company

Inventor： Jason J. Raasch ,  Christopher Brophy ,  Kevin A. Weiss ,  Duane S. Freimuth

IPC: F24F11/75 ,  F24F11/49 ,  F24F11/63 ,  F24F11/88

Abstract: A flow control device for controlling flow in a heating, ventilation, or air conditioning (HVAC) system is shown. The flow control device includes a valve body including an inlet path, an outlet path, a valve member, and a valve stem coupled to the valve member. The flow control device includes a first sensor configured to obtain pressure measurements within the valve body, a second sensor configured to obtain displacement measurements of the valve stem, and a controller including a processing circuit configured to determine a flowrate based at least on the pressure measurements from the first sensor and the displacement measurements from the second sensor.