METHOD OF DEFROSTING AN ENERGY RECOVERY VENTILATOR UNIT
    41.
    发明申请
    METHOD OF DEFROSTING AN ENERGY RECOVERY VENTILATOR UNIT 审中-公开
    一种能量回收通风机单元的方法

    公开(公告)号:US20150241081A1

    公开(公告)日:2015-08-27

    申请号:US14641090

    申请日:2015-03-06

    CPC classification number: F24F11/30 F24F11/41 F24F12/006 F24F2140/30

    Abstract: A method of defrosting an energy recovery ventilator unit. The method comprises defrosting an energy recovery ventilator unit. The method comprises activating a defrost process of an enthalpy-exchange zone of the energy recovery ventilator unit when an air-flow blockage in the enthalpy-exchange zone coincides with a frost threshold in the ambient environment surrounding the energy recovery ventilator unit. The method also comprises terminating the defrost process when a heat transfer efficiency across the enthalpy-exchange zone returns to within 10 percent of a pre-frosting heat transfer efficiency wherein, the heat transfer efficiency is proportional to a temperature difference between an intake air zone of the energy recovery ventilator and a supply air zone of the energy recovery ventilator divided by a temperature difference between an return air zone of the energy recovery ventilator and the intake air zone.

    Abstract translation: 一种能量回收通风机组的除霜方法。 该方法包括对能量回收通气机组进行除霜。 该方法包括当焓交换区域中的气流阻塞与能量回收通风机单元周围的周围环境中的霜冻阈值一致时,激活能量回收通风机单元的焓交换区域的除霜过程。 该方法还包括当跨过焓交换区的热传递效率返回到预结霜传热效率的10%以内时终止除霜过程,其中传热效率与进入空气区之间的温差成比例 能量回收通风机和能量回收通风机的供气区除以能量回收通风机回风区与进气区之间的温差。

    COMPRESSOR OPERATION MANAGEMENT IN AIR CONDITIONERS
    42.
    发明申请
    COMPRESSOR OPERATION MANAGEMENT IN AIR CONDITIONERS 有权
    空调压缩机运行管理

    公开(公告)号:US20150168042A1

    公开(公告)日:2015-06-18

    申请号:US14109745

    申请日:2013-12-17

    Abstract: In various implementations, an air conditioning system may include one or more compressors. The operation of the compressor(s) may be managed. For example, when an air conditioner is allowed to operate after being shut down, a first compressor may be allowed to operate and a wait time may elapse prior to starting at least one other compressor. When a compressor has multiple stages of operation, in some implementations, a first compressor may be allowed to operate at a low stage and a wait time may elapse prior to starting a higher stage of operation of the first compressor.

    Abstract translation: 在各种实施方式中,空调系统可以包括一个或多个压缩机。 可以管理压缩机的操作。 例如,当在关闭之后允许空调器操作时,可以允许第一压缩机操作,并且可以在启动至少一个其他压缩机之前经过等待时间。 当压缩机具有多个操作阶段时,在一些实施方案中,可以允许第一压缩机在低阶段操作,并且等待时间可以在开始第一压缩机的较高操作阶段之前经过。

    High-pressure re-start control algorithm for microchannel condenser with reheat coil

    公开(公告)号:US11708981B2

    公开(公告)日:2023-07-25

    申请号:US17208795

    申请日:2021-03-22

    CPC classification number: F24F3/153 F25B41/20 F24F3/1405 F25B2600/17

    Abstract: An HVAC system with a reheat coil is described, the system includes a compressor, a micro-channel condenser and an evaporator. A reversing valve is connected to the compressor, the micro-channel condenser and the reheat coil. The reversing valve is used to direct the refrigerant from the compressor to the micro-channel condenser in a normal mode, and to direct the refrigerant from the compressor to the reheat coil in a reheat mode. The reversing valve can be switched from normal mode to reheat mode when a high pressure condition is detected at an input to the micro-channel condenser, and switched back from reheat mode to normal mode when the high pressure condition has resolved or an amount of time has passed. In the normal mode the refrigerant is returned from the reheat coil into a refrigerant line between the evaporator and the compressor through a restrictor.

    HIGH-PRESSURE RE-START CONTROL ALGORITHM FOR MICROCHANNEL CONDENSER WITH REHEAT COIL

    公开(公告)号:US20210207823A1

    公开(公告)日:2021-07-08

    申请号:US17208795

    申请日:2021-03-22

    Abstract: An HVAC system with a reheat coil is described, the system includes a compressor, a micro-channel condenser and an evaporator. A reversing valve is connected to the compressor, the micro-channel condenser and the reheat coil. The reversing valve is used to direct the refrigerant from the compressor to the micro-channel condenser in a normal mode, and to direct the refrigerant from the compressor to the reheat coil in a reheat mode. The reversing valve can be switched from normal mode to reheat mode when a high pressure condition is detected at an input to the micro-channel condenser, and switched back from reheat mode to normal mode when the high pressure condition has resolved or an amount of time has passed. In the normal mode the refrigerant is returned from the reheat coil into a refrigerant line between the evaporator and the compressor through a restrictor.

    Method and system for supply-air re-circulation

    公开(公告)号:US10955165B2

    公开(公告)日:2021-03-23

    申请号:US16208880

    申请日:2018-12-04

    Abstract: 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.

    Fresh air intake for low NOx emission furnace

    公开(公告)号:US10711998B2

    公开(公告)日:2020-07-14

    申请号:US15723340

    申请日:2017-10-03

    Abstract: A fresh-air intake according to aspects of the disclosure includes an outer cover having a pair of side panels disposed in a generally parallel spaced relationship, a top panel coupled to, and disposed generally perpendicular to, each panel of the pair of side panels, a bottom panel disposed generally parallel to the top panel, and a front panel coupled to, and disposed generally perpendicular to, each panel of the pair of side panels and the top panel, the front panel having a window formed therein, a supply line coupled to the bottom panel, a weir extending above the bottom panel and surrounding a junction with the supply line, a baffle disposed inside the outer cover, the baffle being disposed inwardly of the window so as to prevent infiltration of moisture into the supply line, and a weep hole formed in the bottom panel.

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