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公开(公告)号：US11378292B2
公开(公告)日：2022-07-05
申请号：US16687154
申请日：2019-11-18
发明人： Danny Miller , Justin Sipe
IPC分类号： H04L67/125 , G05D23/19 , G05B19/042 , F24F110/70 , F24F11/77 , F24F11/62 , F24F11/46 , H04L67/12 , G05D7/06 , G05B19/05 , F24F11/30 , F24F110/50 , F24F110/20 , F24F11/00
摘要： An energy-reducing method and apparatus for retrofitting a single zone, constant volume HVAC system, with or without an economizer, that provides heating, cooling, and ventilation to occupants within a building space. The present invention includes the introduction of a programmable logic controller and variable frequency drive (VFD) that takes control of the existing fan, heating, cooling, and optional economizer operation. The reduction of the fan speed in the ventilation mode when the 100% operation is not needed saves significant energy of the existing constant volume HVAC system where the fan motor is designed to run 100% of the time.
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公开(公告)号：US12061003B2
公开(公告)日：2024-08-13
申请号：US17834291
申请日：2022-06-07
发明人： Danny Miller , Justin Sipe
IPC分类号： G05B19/042 , F24F11/00 , F24F11/30 , F24F11/46 , F24F11/58 , F24F11/62 , F24F11/77 , F24F110/70 , G05B19/05 , G05D7/06 , G05D23/19 , H04L67/12 , H04L67/125 , F24F110/20 , F24F110/50
CPC分类号： F24F11/58 , F24F11/30 , F24F11/46 , F24F11/62 , F24F11/77 , G05B19/042 , G05B19/05 , G05D7/0676 , G05D23/1919 , H04L67/12 , H04L67/125 , F24F2011/0006 , F24F2110/20 , F24F2110/50 , F24F2110/70 , G05B2219/1133 , G05B2219/25289 , G05B2219/2614 , Y02B30/54 , Y02B30/70 , Y02B30/90
摘要： Systems and methods are provided and include a variable frequency drive configured to drive a fan motor of an HVAC system to ventilate an indoor space, the HVAC system having a cooling assembly that includes at least one of an economizer and a compressor. A controller is configured to communicate with the variable frequency drive, receive at least one signal from an occupancy sensing device, determine whether the indoor space is less than fully occupied based on the at least one signal, and control the variable frequency drive to reduce a speed of the fan motor in response to determining that the indoor space is less than fully occupied.
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