公开(公告)号：US20220065450A1

公开(公告)日：2022-03-03

申请号：US17010230

申请日：2020-09-02

Applicant: Rheem Manufacturing Company

Inventor： Robert Oglesbee ,  Allen A. Thorn ,  Stephen Maciulewicz ,  Christopher M. Puranen

IPC: F23N5/02

Abstract: A flame sensing system, a flame sensing unit, and a method for sensing a flame are described. The flame sensing system includes a flame sense probe and a power regulating device. The power regulating device is configured to generate a regulated voltage from an input voltage received from a power source and to output the regulated voltage to the flame sense probe such that a flame current along a flame can be measured. The flame sensing system also includes a flame current detector to measure the flame current and generate an output voltage corresponding to the flame current, and a first level detector to generate a flame strength output signal based on the output voltage, where the flame strength output signal is indicative of a strength of a flame.

公开(公告)号：US20230272937A1

公开(公告)日：2023-08-31

申请号：US18312282

申请日：2023-05-04

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen

IPC: F24F11/65 ,  F24F11/61 ,  G05B19/042

CPC classification number: F24F11/65 ,  F24F11/61 ,  G05B19/042 ,  F24F2110/10

Abstract: The disclosed technology includes systems and methods for reducing temperature overshoot of a heating, ventilation, and air conditioning (HVAC) system. The disclosed technology can include a thermostat having a temperature sensor and a controller. The controller can be configured to receive temperature data from the temperature sensor, determine whether a time since the heating cycle of the HVAC unit began is greater than or equal to a predetermined amount of time, and determine whether a current temperature is less than or equal to a low threshold temperature, the low threshold temperature being less than a target temperature. If the current temperature is less than or equal to the low threshold temperature, the controller can determine whether a capacity of the HVAC unit at the end of the heating cycle is greater than a threshold capacity and adjust a response setting of the thermostat by a predetermined adjustment amount.

公开(公告)号：US11668487B1

公开(公告)日：2023-06-06

申请号：US17551510

申请日：2021-12-15

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen

IPC: F24F11/65 ,  F24F11/61 ,  G05B19/042 ,  F24F110/10

CPC classification number: F24F11/65 ,  F24F11/61 ,  G05B19/042 ,  F24F2110/10 ,  G05B2219/2614

Abstract: The disclosed technology includes systems and methods for reducing temperature overshoot of a heating, ventilation, and air conditioning (HVAC) system. The disclosed technology can include a thermostat having a temperature sensor and a controller. The controller can be configured to receive temperature data from the temperature sensor, determine whether a time since the heating cycle of the HVAC unit began is greater than or equal to a predetermined amount of time, and determine whether a current temperature is less than or equal to a low threshold temperature, the low threshold temperature being less than a target temperature. If the current temperature is less than or equal to the low threshold temperature, the controller can determine whether a capacity of the HVAC unit at the end of the heating cycle is greater than a threshold capacity and adjust a response setting of the thermostat by a predetermined adjustment amount.

公开(公告)号：US20190195528A1

公开(公告)日：2019-06-27

申请号：US15850619

申请日：2017-12-21

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen ,  Stephen Maciulewicz

IPC: F24F11/74 ,  F24F11/81

CPC classification number: F24F11/74 ,  F24F11/81 ,  F24F2110/10 ,  F24F2110/40 ,  F24F2130/40 ,  F24F2140/40

Abstract: An HVAC system includes at least one zone comprising a zone damper and a bypass comprising a bypass damper associated with a virtual zone. When an airflow of conditioned air to the at least one zone exceeds a maximum airflow value for the at least one zone and/or when other airflow reduction techniques have been exhausted, a system controller of the HVAC system controls the bypass damper to incrementally bypass a portion of conditioned air to the virtual zone. The portion of the conditioned air that is bypassed is a minimum amount of the conditioned air that is needed to reduce the airflow of the conditioned air below the maximum airflow value and keep the HVAC system running. Further, the system controller closes the bypass damper when a temperature of the portion of the conditioned air exceeds a threshold temperature value.

公开(公告)号：US20250027670A1

公开(公告)日：2025-01-23

申请号：US18907417

申请日：2024-10-04

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen

IPC: F24F11/65 ,  F24F11/61 ,  F24F110/10 ,  G05B19/042

Abstract: The disclosed technology includes systems and methods for reducing temperature overshoot of a heating, ventilation, and air conditioning (HVAC) system. The disclosed technology can include a thermostat having a temperature sensor and a controller. The controller can be configured to receive temperature data from the temperature sensor, determine whether a time since the heating cycle of the HVAC unit began is greater than or equal to a predetermined amount of time, and determine whether a current temperature is less than or equal to a low threshold temperature, the low threshold temperature being less than a target temperature. If the current temperature is less than or equal to the low threshold temperature, the controller can determine whether a capacity of the HVAC unit at the end of the heating cycle is greater than a threshold capacity and adjust a response setting of the thermostat by a predetermined adjustment amount.

公开(公告)号：US11466910B2

公开(公告)日：2022-10-11

申请号：US16871201

申请日：2020-05-11

Applicant: Rheem Manufacturing Company

Inventor： Douglas M. Bates ,  Christopher M. Puranen

IPC: F25B47/02 ,  F25B30/02

Abstract: The disclosed technology includes systems and methods of reducing frost accumulation on a heat pump evaporator coil. The disclosed technology can include a heat pump assembly having an evaporator coil, a fan configured to direct air across the evaporator coil, a temperature sensor, and a controller configured to energize the fan to direct air across the evaporator coil when the temperature of the evaporator coil is below a threshold temperature.

公开(公告)号：US11339991B2

公开(公告)日：2022-05-24

申请号：US16866032

申请日：2020-05-04

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen ,  Stephen Maciulewicz

IPC: F24F11/74 ,  F24F11/62 ,  F24F3/052 ,  F24F3/044 ,  F24F140/40 ,  F24F110/40

Abstract: A control system can provide a linear behavior of airflow as a function of damper position of each zone damper in an HVAC system. The control system incrementally closes each zone damper from a fully open position to a fully closed position, and records static pressure measurements with each change in damper position. Then, using a mathematical model that is derived from the second fan law, a correction is calculated for each damper position of each zone damper based on the recorded static pressure measurements to provide corrected damper positions at which the airflow through the zone damper exhibits a linear behavior. The corrected damper positions are stored and used during an operational cycle of the HVAC system to obtain a precise airflow through the zone dampers.

公开(公告)号：US10677489B2

公开(公告)日：2020-06-09

申请号：US15850619

申请日：2017-12-21

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen ,  Stephen Maciulewicz

IPC: F24F11/74 ,  F24F11/81 ,  F24F140/40 ,  F24F110/40 ,  F24F130/40 ,  F24F110/10

Abstract: An HVAC system includes at least one zone comprising a zone damper and a bypass comprising a bypass damper associated with a virtual zone. When an airflow of conditioned air to the at least one zone exceeds a maximum airflow value for the at least one zone and/or when other airflow reduction techniques have been exhausted, a system controller of the HVAC system controls the bypass damper to incrementally bypass a portion of conditioned air to the virtual zone. The portion of the conditioned air that is bypassed is a minimum amount of the conditioned air that is needed to reduce the airflow of the conditioned air below the maximum airflow value and keep the HVAC system running. Further, the system controller closes the bypass damper when a temperature of the portion of the conditioned air exceeds a threshold temperature value.

公开(公告)号：US12130039B2

公开(公告)日：2024-10-29

申请号：US18312282

申请日：2023-05-04

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen

IPC: F24F11/65 ,  F24F11/61 ,  G05B19/042 ,  F24F110/10

CPC classification number: F24F11/65 ,  F24F11/61 ,  G05B19/042 ,  F24F2110/10 ,  G05B2219/2614

Abstract: The disclosed technology includes systems and methods for reducing temperature overshoot of a heating, ventilation, and air conditioning (HVAC) system. The disclosed technology can include a thermostat having a temperature sensor and a controller. The controller can be configured to receive temperature data from the temperature sensor, determine whether a time since the heating cycle of the HVAC unit began is greater than or equal to a predetermined amount of time, and determine whether a current temperature is less than or equal to a low threshold temperature, the low threshold temperature being less than a target temperature. If the current temperature is less than or equal to the low threshold temperature, the controller can determine whether a capacity of the HVAC unit at the end of the heating cycle is greater than a threshold capacity and adjust a response setting of the thermostat by a predetermined adjustment amount.

公开(公告)号：US20230304693A1

公开(公告)日：2023-09-28

申请号：US18204698

申请日：2023-06-01

Applicant: Rheem Manufacturing Company

Inventor： Christopher M. Puranen ,  Stephen Maciulewicz

IPC: F24F11/74 ,  F24F3/052 ,  F24F11/62 ,  F24F3/044

CPC classification number: F24F11/74 ,  F24F3/0527 ,  F24F11/62 ,  F24F3/044 ,  F24F2140/40

Abstract: Embodiments include systems and methods for linearization of airflow through dampers of a heating, ventilation, and air conditioning systems. In one embodiment, a system may include a fan, a first damper for a first zone of the system, the first damper configured to move from a first position to a second position, and from the second position to a third position; and a controller. The controller may be configured to determine a first corrective positional adjustment for the first damper for the second position at a first time interval, and determine, using the first corrective positional adjustment, a fourth position for the first damper, wherein the first damper moves to the fourth position instead of the second position during a second time interval.