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    HVAC SYSTEM WITH INDOOR AIR QUALITY MONITORING AND MITIGATION
    3.
    发明公开
    HVAC SYSTEM WITH INDOOR AIR QUALITY MONITORING AND MITIGATION 审中-公开

    公开(公告)号：US20230366581A1

    公开(公告)日：2023-11-16

    申请号：US17741968

    申请日：2022-05-11

    Applicant: Lennox Industries Inc.

    Inventor： Sanjeev Hingorani ,  Henry Greist ,  Elena Smirnova ,  Pete Hrejsa ,  Emile Abi-Habib ,  Dhishan Kande

    IPC: F24F11/74 ,  F24F11/00 ,  F24F11/63

    CPC classification number: F24F11/74 ,  F24F11/0001 ,  F24F11/63 ,  F24F2110/66

    Abstract: An HVAC system includes one or more air quality sensors, each configured to measure an air quality and a thermostat communicatively coupled to the one or more air quality sensors. The thermostat receives indoor air quality measurements from the one or more air quality sensors. An indoor air quality score is determined based at least in part on the received indoor air quality measurements. The thermostat determines, based at least in part on the indoor air quality score, a mitigation action, wherein the mitigation action comprises one or more actions selected from the group of: (i) a filtering action comprising filtering air provided to the space using an air purification subsystem, and (ii) a ventilation action comprising ventilating the space using a ventilation subsystem. The mitigation action is executed, or implemented, by adjusting one or more components of the HVAC system.

    SYSTEMS AND METHODS OF PREDICTING LIFE OF A FILTER IN AN HVAC SYSTEM
    4.
    发明申请
    SYSTEMS AND METHODS OF PREDICTING LIFE OF A FILTER IN AN HVAC SYSTEM 审中-公开

    公开(公告)号：US20190374894A1

    公开(公告)日：2019-12-12

    申请号：US16004129

    申请日：2018-06-08

    Applicant: Lennox industries Inc.

    Inventor： Sanjeev Hingorani ,  Henry Greist ,  Peter Hrejsa

    IPC: B01D46/00 ,  F24F3/16 ,  G08B21/18 ,  G05B19/042

    Abstract: A method includes initiating, by a controller of a heating, ventilation, and air conditioning (“HVAC”) system, a filter calibration procedure, curve fitting a first line based on a plurality of static pressure measurements and corresponding flowrates of air, and generating a second line based on the first line. The method further includes determining a first static pressure measurement sensed by at least one sensor in response to determining that a first flowrate of air has been moved by the at least one blower and comparing the first static pressure value to a predicted static pressure value of the second line, the predicted static pressure value corresponding to the first flowrate of air. The method further includes determining that an air filter of the HVAC system has no more usable life in response to determining that the first static pressure value is greater than the predicted static pressure value.

    Indoor Air Quality Monitors for HVAC Systems
    6.
    发明公开
    Indoor Air Quality Monitors for HVAC Systems 审中-公开

    公开(公告)号：US20230383981A1

    公开(公告)日：2023-11-30

    申请号：US17829171

    申请日：2022-05-31

    Applicant: Lennox Industries Inc.

    Inventor： Rajesh Alayil ,  Henry Todd Greist ,  Sanjeev Hingorani ,  Thomas John Wolowicz

    IPC: F24F11/74 ,  F24F11/30

    CPC classification number: F24F11/74 ,  F24F11/30 ,  F24F2110/70

    Abstract: A heating, ventilating, and air conditioning (HVAC) system includes at least one indoor air quality monitor. The indoor air quality monitor is formed with an arrangement of chambers—intake chamber, low-flow chamber, and outlet chamber—such that a particulate sensor on an interior and another air quality sensor are neither overwhelmed nor underwhelmed by air flow to the sensors. The indoor air quality monitor may be arranged for attaching to a surface in a conditioned space for sampling air therein or may include a bypass chamber that fluidly couples to an HVAC duct. Other systems and methods are presented.

    PRESSURE PROBES AND PRESSURE MEASUREMENTS IN AIRFLOW
    7.
    发明申请
    PRESSURE PROBES AND PRESSURE MEASUREMENTS IN AIRFLOW 有权

    公开(公告)号：US20210190657A1

    公开(公告)日：2021-06-24

    申请号：US17194412

    申请日：2021-03-08

    Applicant: Lennox Industries Inc.

    Inventor： Henry Greist ,  Sanjeev Hingorani

    IPC: G01N7/10 ,  F24F11/49 ,  G01L13/00 ,  G01L19/00

    Abstract: In an embodiment, the present disclosure pertains to a pressure probe. In some embodiments, the pressure probe includes a tube having an output end, an internal passage, an axial run, and pressure orifices axially aligned along a downstream side of the axial run. In some embodiments, the pressure orifices are in communication with the output end through the internal passage and an upstream side of the axial run that is opposite from the downstream side of the axial run and does not include a pressure orifice. Additionally, in some embodiments, the downstream side is perpendicular to airflow.

    Systems and methods of predicting life of a filter in an HVAC system
    8.
    发明授权
    Systems and methods of predicting life of a filter in an HVAC system 有权

    公开(公告)号：US10518206B1

    公开(公告)日：2019-12-31

    申请号：US16004129

    申请日：2018-06-08

    Applicant: Lennox industries Inc.

    Inventor： Sanjeev Hingorani ,  Henry Greist ,  Peter Hrejsa

    IPC: G08B21/00 ,  B01D46/00 ,  F24F3/16 ,  G08B21/18 ,  G05B19/042

    Abstract: A method includes initiating, by a controller of a heating, ventilation, and air conditioning (“HVAC”) system, a filter calibration procedure, curve fitting a first line based on a plurality of static pressure measurements and corresponding flowrates of air, and generating a second line based on the first line. The method further includes determining a first static pressure measurement sensed by at least one sensor in response to determining that a first flowrate of air has been moved by the at least one blower and comparing the first static pressure value to a predicted static pressure value of the second line, the predicted static pressure value corresponding to the first flowrate of air. The method further includes determining that an air filter of the HVAC system has no more usable life in response to determining that the first static pressure value is greater than the predicted static pressure value.

    MEASURING INDOOR AIR QUALITY FOR A HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
    10.
    发明公开
    MEASURING INDOOR AIR QUALITY FOR A HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM 审中-公开

    公开(公告)号：US20230324262A1

    公开(公告)日：2023-10-12

    申请号：US17718084

    申请日：2022-04-11

    Applicant: Lennox Industries Inc.

    Inventor： Surendran Ramasamy ,  Henry Greist ,  Sanjeev Hingorani ,  Calvin Michaelis

    IPC: G01N1/22 ,  F24F11/89

    CPC classification number: G01N1/2247 ,  F24F2110/64 ,  F24F11/89 ,  G01N1/2273

    Abstract: An air quality measuring device that includes a first chamber, a second chamber, a third chamber, and a fourth chamber. The first chamber includes a first inlet configured to receive a first airflow, a first outlet configured to receive a first portion of the first airflow, and a second outlet configured to receive a second portion of the first airflow. The second chamber includes a second inlet configured to receive the first portion of the first airflow and a first sensor disposed within the second chamber. The third chamber includes a third inlet configured to receive the second portion of the first airflow and a second sensor disposed within the third chamber. The fourth chamber includes a fourth inlet configured to receive the second portion of the first airflow and a third sensor disposed within the fourth chamber.

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