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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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公开(公告)号：US20200318868A1
公开(公告)日：2020-10-08
申请号：US16907522
申请日：2020-06-22
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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公开(公告)号：US20180274835A1
公开(公告)日：2018-09-27
申请号：US15464606
申请日：2017-03-21
CPC分类号： F25B49/022 , F25B31/00 , F25B31/002 , F25B41/04 , F25B41/043 , F25B49/02 , F25B2400/075 , F25B2400/0751 , F25B2500/16 , F25B2500/27 , F25B2600/0251 , F25B2600/2519
摘要： A compressor system includes a first compressor and a second compressor. A suction equalization line fluidly couples the first compressor and the second compressor. A first branch suction line is fluidly coupled to the first compressor and a second branch suction line is fluidly coupled to the second compressor. A main suction line is fluidly coupled to the first branch suction line and the second branch suction line. An obstruction device is disposed in at least one of the first branch suction line and the second branch suction line. Responsive to deactivation of at least one of the first compressor and the second compressor, the obstruction device is at least partially closed thereby causing prescribed liquid levels in the first compressor and the second compressor during partial-load operation.
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24.发明申请公开(公告)号：US20180274830A1
公开(公告)日：2018-09-27
申请号：US15824060
申请日：2017-11-28
发明人： Rakesh GOEL , Siddarth RAJAN
CPC分类号： F25B31/00 , F25B31/002 , F25B41/003 , F25B41/04 , F25B41/043 , F25B41/06 , F25B49/02 , F25B2400/0751 , F25B2500/16 , F25B2500/27 , F25B2600/0251 , F25B2600/2519
摘要： The compressor system includes a first compressor, a second compressor, and a third compressor. A common equalization line fluidly couples the first compressor, the second compressor, and the third compressor. The common equalization line provides a single path for passage of fluids between the first compressor, the second compressor, and the third compressor. An obstruction device is disposed in the common equalization line between the first compressor and the second compressor. When the first compressor is deactivated, the second compressor is activated, and the third compressor is activated, the obstruction device is in a closed configuration. Prevention of fluid flow between the first compressor and the second compressor causes at least minimum prescribed fluid levels to be maintained in the first compressor, the second compressor, and the third compressor.
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25.发明申请公开(公告)号：US20180045447A1
公开(公告)日：2018-02-15
申请号：US15793050
申请日：2017-10-25
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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26.发明申请公开(公告)号：US20170356671A1
公开(公告)日：2017-12-14
申请号：US15177639
申请日：2016-06-09
发明人： Rakesh GOEL
CPC分类号： F24F11/77 , F24F11/72 , F24F11/76 , F24F11/83 , F24F11/85 , F25B49/02 , F25B2600/11 , F25D17/06
摘要： An HVAC system includes an evaporator coil and a metering device fluidly coupled to the evaporator coil. The HVAC system also includes a variable-speed circulation fan and a condenser coil fluidly coupled to the metering device. The HVAC system also includes a variable-speed compressor fluidly coupled to the condenser coil and the evaporator coil and a controller operatively coupled to the variable-speed compressor and the variable-speed circulation fan. The controller is configured to measure a speed of the variable-speed compressor, calculate a normal cooling Cubic Feet per Minute (CFM), measure a speed of the variable-speed circulation fan, and determine if the speed of the variable-speed circulation fan exceeds the normal cooling CFM. If the speed of the variable-speed circulation fan exceeds the normal cooling CFM, the HVAC controller adjusts a speed of at least one of the variable-speed compressor and the variable-speed circulation fan.
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公开(公告)号：US20160238298A1
公开(公告)日：2016-08-18
申请号：US14625609
申请日：2015-02-18
发明人： Rakesh GOEL , Eric BERG
CPC分类号： F25B49/02 , F25B41/003 , F25B41/062 , F25B2341/068 , F25B2341/0683 , F25B2400/054 , F25B2500/15 , F25B2600/2513 , F25B2700/21151
摘要： Systems and methods are presented for improving stabilization of a heating, ventilating, and air conditioning (HVAC) system. More specifically, the systems and methods include a heat-flow modulator for regulating an exchange of thermal energy between a flow of refrigerant and a sensory bulb. The exchange of thermal energy allows an expansion valve to respond to a refrigerant temperature using an actuator, which is coupled to the sensory bulb. The heat-flow modulator is formed of a body that includes a first contact surface and a second contact surface. The first contact surface is thermally-coupled to a suction line of the HVAC system, which conveys the flow of refrigerant. The second contact surface is thermally-coupled to the sensory bulb. Other systems and methods are presented.
摘要翻译： 提出了系统和方法，以改善加热，通风和空调（HVAC）系统的稳定性。 更具体地，系统和方法包括用于调节制冷剂流和感觉球之间的热能交换的热流调节器。 热能的交换允许膨胀阀使用耦合到感觉灯泡的致动器来响应制冷剂温度。 热流调节器由包括第一接触表面和第二接触表面的主体形成。 第一接触表面热耦合到HVAC系统的吸入管线，其传送制冷剂的流动。 第二接触表面热耦合到感觉灯泡。 介绍了其他系统和方法。
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公开(公告)号：US20220186996A1
公开(公告)日：2022-06-16
申请号：US17123702
申请日：2020-12-16
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 is performed by a controller in the HVAC system. The method includes determining a reference saturated suction temperate (SST) via a sensor disposed in relation to an evaporator coil in the HVAC system. 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, increasing a discharge air temperature (DAT) setpoint.
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公开(公告)号：US20210381735A1
公开(公告)日：2021-12-09
申请号：US17408802
申请日：2021-08-23
发明人： Rakesh GOEL , Siddarth RAJAN , Patric Ananda BALAN
摘要： An HVAC system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil. A condenser coil is fluidly coupled to the compressor. The condenser coil includes at least one condenser circuit fluidly coupled between a discharge line and an exit manifold. A sub-cool circuit is fluidly coupled between the exit manifold and a liquid line. A first temperature sensor is disposed at an entrance to the sub-cool circuit. A second temperature sensor is disposed at an exit to the sub-cool circuit. An HVAC controller is operatively coupled to the first temperature sensor and the second temperature sensor. The HVAC controller is configured to determine a temperature difference across the sub-cool circuit.
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公开(公告)号：US20210088263A1
公开(公告)日：2021-03-25
申请号：US16578609
申请日：2019-09-23
发明人： Rakesh GOEL , Siddarth RAJAN , Patric Ananda BALAN
摘要： An HVAC system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil. A condenser coil is fluidly coupled to the compressor. The condenser coil includes at least one condenser circuit fluidly coupled between a discharge line and an exit manifold. A sub-cool circuit is fluidly coupled between the exit manifold and a liquid line. A first temperature sensor is disposed at an entrance to the sub-cool circuit. A second temperature sensor is disposed at an exit to the sub-cool circuit. An HVAC controller is operatively coupled to the first temperature sensor and the second temperature sensor. The HVAC controller is configured to determine a temperature difference across the sub-cool circuit.
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