-
公开(公告)号：US11796201B2
公开(公告)日：2023-10-24
申请号：US17235186
申请日：2021-04-20
发明人： Amita Brahme , Umesh Gokhale
IPC分类号： F24F11/38 , F24F11/49 , F24F11/52 , F24F130/10 , F24F140/20 , F24F140/10 , F24F110/12
CPC分类号： F24F11/38 , F24F11/49 , F24F11/52 , F24F2110/12 , F24F2130/10 , F24F2140/10 , F24F2140/20
摘要： An HVAC system includes a suction-side sensor, a liquid-side sensor, an outdoor temperature sensor, and a controller. The controller determines that initial criteria are satisfied for initiating validation of the suction-side sensor and the liquid-side sensor. After determining that the initial criteria are satisfied, a suction-side property value, liquid-side property value, and outdoor temperature value are received. The controller determines whether a first validation criteria and a second validation criteria are satisfied. If both the first validation criteria and the second validation criteria are satisfied, the suction-side sensor, the liquid-side sensor, and the outdoor temperature sensor are determined to be functioning properly. Otherwise, the controller determines which one or more of the sensors are malfunctioning.
-
公开(公告)号：US11378317B2
公开(公告)日：2022-07-05
申请号：US17122247
申请日：2020-12-15
发明人： Umesh Gokhale , Eric Berg
摘要： An HVAC system includes a pressure sensor is disposed in a suction line between a compressor and an indoor heat-exchange coil. The pressure sensor is electrically coupled to a compressor controller. An HVAC controller is electrically coupled to the compressor controller. The HVAC controller is configured to transmit a signal to the compressor controller to activate and de-activate the compressor. The compressor controller is configured to receive a signal from the HVAC controller to activate the compressor, determine a start speed of the compressor, monitor a run time of the compressor, and modulate a speed of the compressor.
-
公开(公告)号：US20220113046A1
公开(公告)日：2022-04-14
申请号：US17645522
申请日：2021-12-22
发明人： Amita Brahme , Umesh Gokhale
IPC分类号： F24F11/38
摘要： A controller of an HVAC system monitors a suction-side property and a liquid-side property over a period of time. The controller determines whether the suction-side property has an increasing or decreasing trend over the period of time. The controller determines whether the liquid-side property has an increasing or decreasing trend. In response to determining that both the suction-side property and the liquid-side property have an increasing trend over the period of time, a fan fault is detected. In response to determining that the suction-side property has a decreasing trend and the liquid-side property has an increasing trend over the period of time, a blockage of a refrigerant conduit subsystem is detected. In response to determining that both the suction-side property and the liquid-side property have a decreasing trend over the period of time, a blower fault is detected.
-
公开(公告)号：US11193685B2
公开(公告)日：2021-12-07
申请号：US16806274
申请日：2020-03-02
发明人： Amita Brahme , Umesh Gokhale
IPC分类号： F24F11/38 , F24F140/12
摘要： A controller of an HVAC system is communicatively coupled to a liquid-side sensor and a shutoff switch. The controller stores measurements of a liquid-side property over an initial period of time. The controller detects that the shutoff switch is tripped at a first time stamp corresponding to an end of the initial period of time. The controller accesses the measurements of the liquid-side property. The controller determines, based on the measurements of the liquid-side property, whether the liquid-side property has an increasing or a decreasing trend. In response to determining that the liquid-side property has the decreasing trend, a malfunction of a blower of the system is determined to have caused the shutoff switch to trip. In response to determining that the liquid-side property has the increasing trend, a blockage of the refrigerant conduit subsystem is determined to have caused the shutoff switch to trip.
-
公开(公告)号：US20210270484A1
公开(公告)日：2021-09-02
申请号：US16806305
申请日：2020-03-02
发明人： Amita Brahme , Umesh Gokhale
摘要： A controller of an HVAC system is communicatively coupled to a suction-side sensor and a shutoff switch. The controller stores measurements of the suction-side property over an initial period of time. The controller detects that the shutoff switch is tripped at a first time stamp corresponding to an end of the initial period of time. The controller accesses the measurements of the suction-side property. The controller determines, based on the measurements of the suction-side property, whether the suction-side property has an increasing or decreasing trend. In response to determining that the suction-side property has the increasing trend, the controller determines that a malfunction of a fan caused the shutoff switch to trip. In response to determining that the suction-side property has the decreasing trend, the controller determines that a blockage of the refrigerant conduit subsystem caused the shutoff switch to trip.
-
公开(公告)号：US10928091B2
公开(公告)日：2021-02-23
申请号：US16256319
申请日：2019-01-24
发明人： Carl T. Crawford , Umesh Gokhale
IPC分类号： F25B29/00 , F24F11/84 , F24F11/64 , F24F11/86 , F24F3/00 , F25B13/00 , F25B41/04 , F25B45/00 , F25B49/02 , F24F110/12
摘要： In one embodiment, an HVAC system includes an indoor unit having a furnace, an outdoor heat pump unit having a compressor and an outdoor coil, a refrigerant line coupled to the indoor unit and the outdoor heat pump unit, and a valve coupled to the refrigerant line. The HVAC system further includes one or more controllers operable to determine that the outdoor heat pump unit is in operation during an air conditioning cycle. The controllers are further operable to determine an outdoor temperature and compare the outdoor temperature to a predetermined temperature. The controllers are further operable to initiate a closure of the valve coupled to the refrigerant line and initiate operation of the compressor at an end of the air conditioning cycle to pump down a refrigerant to the outdoor coil in response to comparing the outdoor temperature to the predetermined temperature.
-
公开(公告)号：US20200240661A1
公开(公告)日：2020-07-30
申请号：US16256378
申请日：2019-01-24
发明人： Carl T. Crawford , Umesh Gokhale
IPC分类号： F24F11/36 , F24F11/64 , F24F11/84 , F24F11/86 , F24F3/00 , F25B45/00 , F25B49/02 , F25B41/04 , F25B13/00 , F25B41/06
摘要： In one embodiment, an HVAC system includes an indoor unit having a furnace, an outdoor heat pump unit having a compressor and an outdoor coil, a refrigerant line coupled to the indoor unit and the outdoor heat pump unit, and an EEV coupled to the refrigerant line. The HVAC system further includes one or more controllers operable to determine an occurrence of a first event, initiate a closure of the EEV, initiate operation of the compressor at a completion of the air conditioning cycle to pump down a refrigerant to the outdoor coil, and cease operation of the compressor when a low-pressure switch is tripped.
-
公开(公告)号：US20230258361A1
公开(公告)日：2023-08-17
申请号：US17651559
申请日：2022-02-17
发明人： Umesh Gokhale , Eric Berg
CPC分类号： F24F11/86 , F24F11/46 , F24F11/61 , F24F11/63 , F24F2110/10
摘要： A device is configured to operate a Heating, Ventilation, and Air Conditioning (HVAC) system. The device is further configured to receive a temperature value and determine a load demand value based on the temperature value. The device is further configured to determine the load demand value is greater than the load capacity value for the HVAC system and, in response, identify a first setting from among a first plurality of settings for the HVAC system. By default, access to the first plurality of setting for the HVAC system is restricted for a user. The device is further configured to receive a response approving permission to operate the HVAC system using the first setting to the user and send a trigger signal to an HVAC controller to operate the one or more components of the HVAC system using the first setting.
-
公开(公告)号：US20210302041A1
公开(公告)日：2021-09-30
申请号：US16832277
申请日：2020-03-27
发明人： Amita Brahme , Umesh Gokhale
摘要： An HVAC system includes a reversing valve configured to receive compressed refrigerant and direct the refrigerant based on an operating mode of the HVAC system. One or more suction-side sensors measure suction-side properties associated with refrigerant provided to an inlet of the compressor. The suction-side properties comprise a suction-side temperature. One or more liquid-side sensors measure liquid-side properties associated with the refrigerant provided from an outlet of the compressor. A controller monitors the suction-side property and liquid-side property. The controller determines whether the suction-side property is greater than the liquid-side property. If the suction-side temperature is greater than the liquid-side temperature, the reversing valve is determined to be in an equalizing configuration. The equalizing configuration corresponds to a configuration in which the refrigerant provided from the outlet of the compressor is directed to the inlet of the compressor without first being directed to other components of the HVAC system.
-
公开(公告)号：US20210270483A1
公开(公告)日：2021-09-02
申请号：US16806274
申请日：2020-03-02
发明人： Amita Brahme , Umesh Gokhale
IPC分类号： F24F11/38
摘要： A controller of an HVAC system is communicatively coupled to a liquid-side sensor and a shutoff switch. The controller stores measurements of a liquid-side property over an initial period of time. The controller detects that the shutoff switch is tripped at a first time stamp corresponding to an end of the initial period of time. The controller accesses the measurements of the liquid-side property. The controller determines, based on the measurements of the liquid-side property, whether the liquid-side property has an increasing or a decreasing trend. In response to determining that the liquid-side property has the decreasing trend, a malfunction of a blower of the system is determined to have caused the shutoff switch to trip. In response to determining that the liquid-side property has the increasing trend, a blockage of the refrigerant conduit subsystem is determined to have caused the shutoff switch to trip.
-
-
-
-
-
-
-
-
-
搜索结果
51 条记录 (耗时 0.019 秒)
