公开(公告)号：US12278580B2

公开(公告)日：2025-04-15

申请号：US18118311

申请日：2023-03-07

Applicant: Copeland Comfort Control LP

Inventor： Harshal Manik Pawar ,  John F. Broker

IPC: H02P25/04 ,  H02P21/18 ,  H02P27/04

Abstract: Disclosed are exemplary embodiments of systems and methods for controlling inducer motor speed. In an exemplary embodiment, a method includes changing stator voltage of an inducer motor (e.g., by changing a firing angle of a triac, using a transistor, a silicon controlled rectifier or semiconductor controlled rectifier (SCR), other switching device, etc.); determining actual inducer motor speed (e.g., by using a hall effect sensor or other speed sensor, etc.); and after determining the actual inducer motor speed, changing the motor stator voltage (e.g., by changing the firing angle of the triac, etc.) to a value at which the actual inducer motor speed is controllably regulated and/or maintained substantially at a set speed.

公开(公告)号：US12060994B2

公开(公告)日：2024-08-13

申请号：US18377678

申请日：2023-10-06

Applicant: COPELAND COMFORT CONTROL LP

Inventor： Harshal Manik Pawar

IPC: F23Q23/10 ,  F23N5/24 ,  F23N5/26 ,  F24H9/20

CPC classification number: F23Q23/10 ,  F23N5/242 ,  F23N5/265 ,  F24H9/2071 ,  F23N2231/12

Abstract: Exemplary embodiments are disclosed of controls including circuit assemblies configured for determining igniter, inducer relay, and igniter relay faults. In exemplary embodiments, a control for a system includes an input configured to receive a control signal, an inducer relay, an igniter relay, and a circuit assembly. The circuit assembly is configured to be coupled to the inducer relay, the igniter relay, and an igniter of the system. The circuit assembly comprises a plurality of diodes and is configured to enable detection of and distinguishing between a failure of the igniter, a failure of the inducer relay, and a failure of the igniter relay as determined by a waveform of the control signal at the input of the control for a given one of a plurality of operational states of the control.

公开(公告)号：US20250067458A1

公开(公告)日：2025-02-27

申请号：US18454330

申请日：2023-08-23

Applicant: Copeland Comfort Control LP

Inventor： Harshal Manik Pawar

IPC: F24F11/65

Abstract: A method of operating a heating ventilation and air conditioning (HVAC) system by a thermostat to control an environmental parameter of a plurality of conditioned spaces is described. The method includes detecting a first value of the environmental parameter of the first conditioned space, the first value being detected by the thermostat, controlling the HVAC system based on the first value of the environmental parameter and a first setpoint for the environmental parameter, receiving, from a first occupancy indicator, a first indication of occupancy of a second conditioned space of the plurality of conditioned spaces, the first occupancy indicator being a human actuated occupancy indicator, and controlling the HVAC system based at least in part on the received first indication of occupancy of the second conditioned space.