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公开(公告)号：US20210025630A1
公开(公告)日：2021-01-28
申请号：US17065663
申请日：2020-10-08
发明人： Rakesh GOEL
摘要： Provided are a method and apparatus for controlling the operation of a compressor of an HVAC system in response to the refrigerant super heat value for refrigerant within the compressor. First and second signals are received for indicating one or more temperature values of refrigerant substantially at the first compressor sump and within the first distributor tube, respectively. A saturated suction temperature is estimated using at least the second signal. A first super heat value is calculated for refrigerant substantially at the first compressor sump using at least the saturated suction temperature and the one or more temperature values indicated by the first signal. A first control signal is generated for at least de-energizing the first compressor if the calculated first super heat value is below a tolerance value defining the minimum super heat value at which the first compressor may be operated.
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公开(公告)号：US20180274829A1
公开(公告)日：2018-09-27
申请号：US15464470
申请日：2017-03-21
摘要： A compressor system includes at least two compressors. A suction equalizing tube fluidly couples the at least two compressors. A plumbing assembly fluidly couples to the first compressor and the second compressor. The plumbing assembly comprises an outlet to each compressor of the at least two compressors. A pressure differential between the at least two compressors is created so as to facilitate maintenance of a desired fluid level in the at least two compressors.
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13.发明申请公开(公告)号：US20180224136A1
公开(公告)日：2018-08-09
申请号：US15424993
申请日：2017-02-06
发明人： Rakesh GOEL
CPC分类号： F24F3/1405 , F24F1/0007 , F24F1/0035 , F24F3/001 , F24F11/30 , F24F11/74 , F24F13/15 , F24F13/222 , F24F13/30 , F24F2003/1446 , F24F2221/16
摘要： An apparatus that includes a supply duct and a return duct fluidly coupled to the supply duct. A first evaporator is disposed between the supply duct and the return duct. A second evaporator is disposed between the supply duct and the return duct. A fresh-air intake is disposed between the supply duct and the return duct upstream of the first evaporator and the second evaporator. A first plurality of dampers are disposed upstream of the first evaporator. A second plurality of dampers are disposed upstream of the second evaporator. A divider panel is disposed between the first evaporator and the second evaporator. The divider panel directs air egressing the first plurality of dampers across the first evaporator and air egressing the second plurality of dampers across the second evaporator
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公开(公告)号：US20170356668A1
公开(公告)日：2017-12-14
申请号：US15177585
申请日：2016-06-09
发明人： Rakesh GOEL
CPC分类号： F24F11/0012 , F24F11/30 , F24F11/72 , F24F11/77 , F24F11/85 , F24F2110/10 , F24F2140/20 , F25B49/022
摘要： An HVAC system includes an evaporator coil and a metering device. The HVAC system includes a variable-speed circulation fan and a condenser coil fluidly coupled to the metering device. A variable-speed compressor is fluidly coupled to the condenser coil and the evaporator coil. A controller is operatively coupled to the variable-speed compressor and the variable-speed circulation fan. A second temperature sensor is disposed in an enclosed space. The second temperature sensor measures temperature of the enclosed space and transmits the temperature of the enclosed space to the controller. The controller determines if the temperature of the enclosed space is below a minimum threshold. Responsive to a determination that the temperature of the enclosed space is below the minimum threshold, the controller modulates at least one of a speed of the variable-speed compressor and the variable-speed circulation fan to lower a discharge air temperature.
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公开(公告)号：US20170336117A1
公开(公告)日：2017-11-23
申请号：US15673839
申请日：2017-08-10
发明人： Rakesh GOEL , Eric Berg , Pete Hrejsa
CPC分类号： F25B49/02 , F24F11/30 , F24F11/62 , F24F2110/10 , F24F2140/12 , F24F2140/50 , F25B13/00 , F25B49/005 , F25B2313/029 , F25B2500/02 , F25B2700/1931 , F25B2700/195
摘要： One aspect presents a controller that comprises a control board, a microprocessor located on and electrically coupled to the control board, and a memory coupled to the microprocessor and located on and electrically coupled to the control board. The controller is configured to receive an operating parameter signal and recalculate a first maximum heating % demand to a second maximum heating % demand that is greater than the first maximum heating % demand, when a value of the operating parameter signal exceeds a predetermined value, and operate the HP system based on the second maximum heating % demand.
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16.发明申请公开(公告)号：US20170184332A1
公开(公告)日：2017-06-29
申请号：US15454507
申请日：2017-03-09
发明人： Eric BERG , Rakesh GOEL
CPC分类号： F25B49/022 , F25B13/00 , F25B31/00 , F25B2600/0253 , F25B2600/026 , F25B2700/1931 , F25B2700/1933 , F25B2700/2106 , F25B2700/21152 , F25B2700/2116 , G01K1/024 , G01L19/086 , G01L27/002 , G01L27/005
摘要： The present invention provides for a system for calibrating operation of a compressor unit in a heating, ventilation, and air conditioning (HVAC) system. A measuring device measures an operating parameter of the HVAC system at a position where the measuring device is mounted on a refrigerant line of the HVAC system. The measuring device switches states when the value of the measured operating parameter reaches a switching value. A controller estimates a value of the first operating parameter at the position where the first measuring device is mounted on the refrigerant line, and the controller determines whether the estimated first operating parameter is within a threshold percentage of the switching value.
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公开(公告)号：US20230088937A1
公开(公告)日：2023-03-23
申请号：US17994523
申请日：2022-11-28
发明人： Rakesh GOEL , Siddarth RAJAN
摘要： In an embodiment, a method of preventing evaporator coil freeze in a heating, ventilation and air conditioning (HVAC) system includes determining a reference saturated suction temperate (SST) via a sensor disposed in relation to an evaporator coil in the HVAC system, where the HVAC system is operating in reheat dehumidification mode. The method also includes determining whether the reference SST is below a minimum SST threshold. The method also includes, responsive to a determination that the reference SST is below the minimum SST threshold, determining a decreased compressor speed. The method also includes modulating a variable-speed compressor in the HVAC system in correspondence to the decreased compressor speed.
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公开(公告)号：US20220316722A1
公开(公告)日：2022-10-06
申请号：US17751768
申请日：2022-05-24
发明人： Rakesh GOEL , Eric PEREZ , Eric BERG
IPC分类号： F24F6/08 , F24F11/30 , F24F1/0007 , F24F1/022 , F24F1/0059 , F24F11/74 , F24F13/10 , F24F13/02 , F24F11/00
摘要： An HVAC system includes an indoor heat-exchange coil disposed between a supply air duct and a return air duct. A damper is disposed in a re-circulation duct and is moveable between an open position and a closed position. A controller is configured to determine if the HVAC system is operating in a heating mode or an air-conditioning mode. Responsive to a determination that the HVAC system is operating in the air-conditioning mode, the controller is configured to determine if the variable-speed indoor circulation fan is operating at a minimum speed and if the relative humidity measured by the humidity sensor is above a pre-determined threshold. Responsive to a determination that the variable-speed indoor circulation fan is operating at the minimum speed and the relative humidity of the enclosed space is above the pre-determined threshold, the controller signals the damper to move to the open position.
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公开(公告)号：US20220186997A1
公开(公告)日：2022-06-16
申请号：US17123476
申请日：2020-12-16
发明人： Rakesh GOEL , Siddarth RAJAN
摘要： A method of mitigating a freeze event in an HVAC system includes measuring a saturated suction temperature, receiving actual temperature value reflective of the measured saturated suction temperature, determining whether the actual temperature value is less than a first pre-determined minimum threshold temperature value, and responsive to a determination that the actual temperature value is less than the first pre-determined minimum threshold temperature value, initiating a timer to operate for a pre-determined time interval. Determining whether the actual temperature value is less than a second pre-determined minimum threshold temperature value. Responsive to a determination that the actual temperature value is less the second pre-determined minimum threshold temperature value, initiating the timer to operate for a modified time interval, determining whether the timer operating for the modified time interval has expired, and responsive to a determination that the timer has expired, modifying operation of a compressor.
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公开(公告)号：US20210172642A1
公开(公告)日：2021-06-10
申请号：US17181050
申请日：2021-02-22
发明人： Rakesh GOEL , Eric PEREZ
IPC分类号： F24F12/00 , F24F11/30 , F24F110/30 , F24F110/40 , F24F110/10 , F24F110/20
摘要： An HVAC system includes an evaporator coil disposed between a supply air duct and a return air duct. A re-circulation duct fluidly couples the supply air duct and the return air duct. A damper is disposed in the re-circulation duct and is moveable between an open position and a closed position. A controller is operatively coupled to a variable-speed compressor, a variable-speed circulation fan, and the damper. Responsive to a determination that the variable-speed circulation fan is operating at the minimum speed and the suction pressure is above the pre-determined threshold, the controller signals the damper to move to the open position. Responsive to a determination that the variable-speed circulation fan is not operating at the minimum speed or the suction pressure is below the pre-determined threshold, the controller signals the damper to move to the closed position.
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