公开(公告)号：US11493221B2

公开(公告)日：2022-11-08

申请号：US16684200

申请日：2019-11-14

Applicant: Johnson Controls Technology Company

Inventor： Steven A. Tice ,  Shaun B. Atchison ,  Noel A. Grajeda-Trevizo ,  Andrew M. Boyd

IPC: F24F11/37 ,  F24F11/36 ,  F24F11/42 ,  F24F11/67 ,  F24F11/88 ,  F24F11/76 ,  F24F11/86 ,  F24F11/43

Abstract: Embodiments of the present disclosure are directed to a controller for a heating, ventilation, and/or air conditioning (HVAC) system. The controller is configured to operate in a first defrost mode or a second defrost mode, determine that feedback from a first sensor of the HVAC system is unavailable, receive feedback from a second sensor of the HVAC system, and operate the HVAC system in the second defrost mode instead of the first defrost mode in response to unavailability of the feedback from the first sensor and based on the feedback from the second sensor.

公开(公告)号：US20210018202A1

公开(公告)日：2021-01-21

申请号：US16684266

申请日：2019-11-14

Applicant: Johnson Controls Technology Company

Inventor： Shaun B. Atchison ,  Steven A. Tice ,  Noel A. Grajeda-Trevizo ,  Andrew M. Boyd

IPC: F24F11/37 ,  F24F11/76 ,  F24F11/88 ,  F24F11/67 ,  F24F11/42 ,  F24F11/43 ,  F24F11/86

Abstract: A control system for a heating, ventilation, and/or air conditioning (HVAC) system includes a controller. The controller is configured to control the HVAC system to condition an air flow based on first feedback from a first sensor of the HVAC system, receive second feedback from a second sensor of the HVAC system, and control the HVAC system to condition the air flow based on the second feedback instead of the first feedback when the first feedback from the first sensor being no longer available. The first feedback is indicative of a first operating parameter of the HVAC system, and the second feedback is indicative of a second operating parameter of a refrigerant flowing through the HVAC system.

公开(公告)号：US11221155B2

公开(公告)日：2022-01-11

申请号：US16684266

申请日：2019-11-14

Applicant: Johnson Controls Technology Company

Inventor： Shaun B. Atchison ,  Steven A. Tice ,  Noel A. Grajeda-Trevizo ,  Andrew M. Boyd

IPC: F24F11/37 ,  F24F11/76 ,  F24F11/88 ,  F24F11/86 ,  F24F11/42 ,  F24F11/43 ,  F24F11/67

Abstract: A control system for a heating, ventilation, and/or air conditioning (HVAC) system includes a controller. The controller is configured to control the HVAC system to condition an air flow based on first feedback from a first sensor of the HVAC system, receive second feedback from a second sensor of the HVAC system, and control the HVAC system to condition the air flow based on the second feedback instead of the first feedback when the first feedback from the first sensor being no longer available. The first feedback is indicative of a first operating parameter of the HVAC system, and the second feedback is indicative of a second operating parameter of a refrigerant flowing through the HVAC system.

公开(公告)号：US20190170600A1

公开(公告)日：2019-06-06

申请号：US15871704

申请日：2018-01-15

Applicant: Johnson Controls Technology Company

Inventor： Steven A. Tice ,  William F. McQuade

IPC: G01M3/16 ,  F25B49/00

Abstract: The present disclosure relates to a refrigerant leak detection and mitigation system of a heating, ventilating, and air conditioning (HVAC) unit. The refrigerant leak detection and mitigation system includes a controller configured to determine a plurality of parameters correlated to refrigerant leak conditions based on data from a plurality of sensors. The controller is also configured to determine a probability of a refrigerant leak in the HVAC unit based on the plurality of parameters. Additionally, the controller is configured to provide a control signal to modify operation of the HVAC unit in response to comparison of the probability with a threshold value.

公开(公告)号：US20210018201A1

公开(公告)日：2021-01-21

申请号：US16684200

申请日：2019-11-14

Applicant: Johnson Controls Technology Company

Inventor： Steven A. Tice ,  Shaun B. Atchison ,  Noel A. Grajeda-Trevizo ,  Andrew M. Boyd

IPC: F24F11/37 ,  F24F11/86 ,  F24F11/42 ,  F24F11/67 ,  F24F11/88 ,  F24F11/76

Abstract: Embodiments of the present disclosure are directed to a controller for a heating, ventilation, and/or air conditioning (HVAC) system. The controller is configured to operate in a first defrost mode or a second defrost mode, determine that feedback from a first sensor of the HVAC system is unavailable, receive feedback from a second sensor of the HVAC system, and operate the HVAC system in the second defrost mode instead of the first defrost mode in response to unavailability of the feedback from the first sensor and based on the feedback from the second sensor.