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    SYSTEMS AND METHODS WITH VARIABLE MITIGATION THRESHOLDS
    1.
    发明申请
    SYSTEMS AND METHODS WITH VARIABLE MITIGATION THRESHOLDS 审中-公开

    公开(公告)号：WO2019204790A1

    公开(公告)日：2019-10-24

    申请号：PCT/US2019/028408

    申请日：2019-04-19

    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

    Inventor： MORGAN, Stuart K. ,  PHAM, Hung M. ,  BUTLER, Brian R.

    IPC: F24F11/59 ,  F24F11/62 ,  F24F110/20 ,  F24F110/66 ,  F24F110/70

    Abstract: An indoor air quality (IAQ) system for a building includes an IAQ sensor that is located within the building and that is configured to measure an IAQ parameter. The IAQ parameter is one of: an amount of particulate of at least a predetermined size present in air; an amount of volatile organic compounds (VOCs) present in air; and an amount of carbon dioxide present in air. A mitigation module is configured to: selectively turn on a mitigation device based on a comparison of the IAQ parameter with a first ON threshold and a second ON threshold; and selectively turn off the mitigation device based on a comparison of the IAQ parameter with an OFF threshold. A clean module is configured to determine a clean value for the IAQ parameter. A thresholds module is configured to, based on the clean value, determine the first ON threshold and the OFF threshold.

    REFRIGERANT ISOLATION USING A REVERSING VALVE
    6.
    发明申请
    REFRIGERANT ISOLATION USING A REVERSING VALVE 审中-公开

    公开(公告)号：WO2022055866A1

    公开(公告)日：2022-03-17

    申请号：PCT/US2021/049260

    申请日：2021-09-07

    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

    Inventor： WELCH, Andrew M. ,  MORTER, Winfield S. ,  MORGAN, Stuart K. ,  BUTLER, Brian R.

    IPC: F25B49/00 ,  F25B41/26 ,  F25B41/24 ,  F24F11/36

    Abstract: A refrigerant control system includes: a reversing valve including: a first inlet configured to receive refrigerant output from a condenser; a first outlet configured to output refrigerant to an inlet of an evaporator located inside of a building; a second inlet configured to receive refrigerant output from the evaporator; and a second outlet configured to output refrigerant to an inlet of a compressor that pumps refrigerant to the condenser; a reversing module configured to: selectively actuate the reversing valve to a first position such that: refrigerant flows directly from the second inlet to the second outlet; and refrigerant flows directly from the first inlet to the first outlet; and selectively actuate the reversing valve to a second position such that: refrigerant flows directly from the second inlet to the first outlet; and refrigerant flows directly from the first inlet to the second outlet.

    COMPUTERIZED HVAC FILTER EVALUATION SYSTEM
    7.
    发明申请
    COMPUTERIZED HVAC FILTER EVALUATION SYSTEM 审中-公开

    公开(公告)号：WO2019204786A1

    公开(公告)日：2019-10-24

    申请号：PCT/US2019/028400

    申请日：2019-04-19

    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

    Inventor： PHAM, Hung M. ,  MORGAN, Stuart K. ,  BUTLER, Brian R.

    IPC: F24F11/39 ,  F24F3/16

    Abstract: A heating, ventilation, and air conditioning (HVAC) control system generates a request to replace a first air filter installed in an air handler of an HVAC system with a second air filter. The second air filter has a particulate matter removal efficiency rating that is greater than a particulate matter removal efficiency rating of the first filter. The system delays for a predetermined period of time and then obtains (i) a first temperature of air downstream of the air handler and (ii) a second temperature of air upstream of the air handler. The system then calculates a temperature difference between the f temperatures and determines whether the temperature difference is within an acceptable range. In response to the temperature difference being within the acceptable range, the system (i) operates the HVAC system using the second air filter and (ii) generates an alert indicating compatibility of the second air filter.

    PARTICULATE-MATTER-SIZE-BASED FAN CONTROL SYSTEM
    8.
    发明申请
    PARTICULATE-MATTER-SIZE-BASED FAN CONTROL SYSTEM 审中-公开

    公开(公告)号：WO2019204785A1

    公开(公告)日：2019-10-24

    申请号：PCT/US2019/028398

    申请日：2019-04-19

    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

    Inventor： PHAM, Hung M. ,  MORGAN, Stuart K. ,  BUTLER, Brian R.

    IPC: B01D53/50 ,  B01D53/04

    Abstract: A control system for a mitigation device includes a processor and a computer-readable medium that includes instructions executable by the processor. The instructions include monitoring a first measured particulate matter (PM) level of a conditioned space. The first measured PM level includes PM having a first range of sizes. The instructions further include monitoring a second measured PM level of the conditioned space. The second measured PM level includes PM having a second range of sizes. The first and second ranges are different but overlapping. The instructions also include asserting, in response to the first measured PM level being greater than a first predetermined threshold, an activation signal. The activation signal forces operation of a fan of the mitigation device. The instructions include asserting, in response to the second measured PM level being greater than a predetermined percentage of the first measured PM level, the activation signal.

    REFRIGERANT LEAK SENSOR AND MITIGATION DEVICE AND METHODS
    9.
    发明申请
    REFRIGERANT LEAK SENSOR AND MITIGATION DEVICE AND METHODS 审中-公开

    公开(公告)号：WO2022016003A1

    公开(公告)日：2022-01-20

    申请号：PCT/US2021/041866

    申请日：2021-07-15

    Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

    Inventor： ALFANO, David A. ,  MORGAN, Stuart K.

    IPC: F25B49/00 ,  F24F11/36 ,  G08B21/18

    Abstract: A system for detecting and mitigating a refrigerant leak includes a temperature control device configured to transmit control signals to a component controller and a blower configured to circulate air. The system includes a leak mitigation controller electrically coupled to the temperature control device and the component controller. The leak mitigation controller directs incoming power to the temperature control device. The leak mitigation controller includes a sensor configured to measure a refrigerant concentration and a relay configured to selectively: (i) connect the temperature control device to the incoming power or (ii) connect the blower to the incoming power. The leak mitigation controller is configured to measure the refrigerant concentration with the sensor and, in response to the measured refrigerant concentration exceeding a threshold, actuate the relay to connect the blower to the incoming power.

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