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1.发明申请公开(公告)号：US20190170599A1
公开(公告)日：2019-06-06
申请号：US15871702
申请日：2018-01-15
发明人： Douglas A. Kester
摘要： A refrigerant leak management system includes a sleeve member having an inner surface, the sleeve member configured to be disposed over an outer surface of a length of a refrigerant conduit such that a gap is defined between the inner surface of the sleeve member and the outer surface of the refrigerant conduit. The refrigerant leak management system also includes a fluid moving device configured to fluidly couple to the gap and configured to maintain a sub-barometric pressure within the gap, and a sensor fluidly coupled to the gap and configured to detect a concentration of a leaked refrigerant in the gap.
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公开(公告)号：US20180100675A1
公开(公告)日：2018-04-12
申请号：US15717743
申请日：2017-09-27
发明人： Ryan L. Snider , Rajiv K. Karkhanis , Chandra S. Yelamanchili , Curtis W. Caskey , Kevin R. Stockton , Nicholas P. Mislak , Douglas A. Kester , Troy E. Smith
CPC分类号： F25B25/005 , F25B9/002 , F25B49/005 , F25B2400/12 , F25B2400/121
摘要： A heating, ventilating, and air conditioning (HVAC) system includes a refrigerant loop having a compressor, where the compressor is configured to circulate a refrigerant through the refrigerant loop, a first heat exchanger disposed along the refrigerant loop, where the first heat exchanger is configured to place the refrigerant in a first heat exchange relationship with a working fluid, and an air handling unit having a second heat exchanger, where the second heat exchanger is configured to place the working fluid in a second heat exchange relationship with an airflow, and where the air handling unit is isolated from the first heat exchanger to reduce or eliminate mixing of refrigerant with the airflow.
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公开(公告)号：US20180094879A1
公开(公告)日：2018-04-05
申请号：US15619245
申请日：2017-06-09
IPC分类号： F28F13/12 , F25B39/00 , F25B49/00 , G01N29/036
摘要： In one embodiment, a cooling system includes an evaporator, which further includes an evaporator tube, a first mechanical wave emitter, and a control system communicatively coupled to the first mechanical wave emitter. The cooling system is configured to circulate refrigerant through the evaporator tube to facilitate heat exchange between the refrigerant and fluid surrounding the evaporator tube. The first mechanical wave emitter is configured to output first mechanical waves to the evaporator tube, and the control system is configured to instruct the first mechanical wave emitter to output the first mechanical waves to enhance nucleation of the refrigerant in the evaporator tube.
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公开(公告)号：US10935454B2
公开(公告)日：2021-03-02
申请号：US15871698
申请日：2018-01-15
发明人： Douglas A. Kester
摘要： A refrigerant leak management system of a HVAC unit includes a sensor configured to detect a refrigerant in an interior of an air handling enclosure. The refrigerant leak management system includes a plurality of airflow management assemblies configured to fluidly isolate the interior of the air handling enclosure in a closed configuration. The plurality of airflow management assemblies includes a return inlet assembly, a supply outlet assembly, and a purge exhaust outlet assembly. The refrigerant leak management system includes a controller configured to actuate the purge exhaust outlet assembly based on detection of the refrigerant by the sensor such that the purge exhaust outlet assembly transitions from a closed position of the purge exhaust outlet assembly to an open position of the purge exhaust outlet assembly that opens the interior of the air handling enclosure to an external environment.
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公开(公告)号：US10830538B2
公开(公告)日：2020-11-10
申请号：US15937630
申请日：2018-03-27
发明人： Ryan L. Snider , Nicholas P. Mislak , Kristen Velez-Diaz , Kevin R. Stockton , Stacy S. Lemkelde , Douglas A. Kester
IPC分类号： F28D1/04 , F24F11/70 , F25B29/00 , F28D21/00 , F28F1/10 , F25B41/04 , F24F140/50 , F25B30/02 , F24F3/00
摘要： A heat exchanger that includes a plurality of conduits that transmit a refrigerant therethrough. A valve that actuates to fluidly couple a first set of conduits of the plurality of conduits in a first setting and fluidly couple a second set of conduits of the plurality of conduits in a second setting.
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公开(公告)号：US10520255B2
公开(公告)日：2019-12-31
申请号：US15614396
申请日：2017-06-05
摘要： A heat exchanger includes a frame and a plurality of coil passes disposed within the frame. The plurality of coil passes is configured to direct a flow of a refrigerant therethrough to transfer heat with an air flow passing over the heat exchanger. The plurality of coil passes include a U-bend disposed between first and second linear portions of the plurality of coil passes to redirect the refrigerant from a first longitudinal end of the heat exchanger to a second longitudinal end of the heat exchanger. Additionally, a first plurality of fins is disposed on an outer surface the U-bend.
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公开(公告)号：US20190293364A1
公开(公告)日：2019-09-26
申请号：US15968548
申请日：2018-05-01
发明人： Kevin R. Stockton , Nicholas P. Mislak , Douglas A. Kester , Ryan L. Snider , Stacy S. Lemkelde , Kristen Velez-Diaz
摘要： The present disclosure relates to a heat exchanger including a tube having a length, and a cross-sectional geometry defined by an inner boundary and an outer boundary extending along the length. The tube is configured to flow a refrigerant fluid within the inner boundary to transfer heat. The cross-sectional geometry varies at respective transition points along the length of the tube. The tube is seamless and undeformed at the transition points.
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公开(公告)号：US20190285348A1
公开(公告)日：2019-09-19
申请号：US15937630
申请日：2018-03-27
发明人： Ryan L. Snider , Nicholas P. Mislak , Kristen Velez-Diaz , Kevin R. Stockton , Stacy S. Lemkelde , Douglas A. Kester
摘要： A heat exchanger that includes a plurality of conduits that transmit a refrigerant therethrough. A valve that actuates to fluidly couple a first set of conduits of the plurality of conduits in a first setting and fluidly couple a second set of conduits of the plurality of conduits in a second setting.
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公开(公告)号：US20180094841A1
公开(公告)日：2018-04-05
申请号：US15718282
申请日：2017-09-28
发明人： Douglas A. Kester , Curtis W. Caskey , James K. Spitzer , Chandra Yelamanchili , Nicholas P. Mislak , Rajiv K. Karkhanis
CPC分类号： F25B41/062 , F25B39/00 , F25B39/028 , F25B40/02 , F25B41/067 , F25B43/006 , F25B49/02 , F25B49/022 , F25B2341/062 , F25B2341/0662 , F25B2341/0683 , F25B2400/13 , F25B2500/19 , F25B2600/0253 , F25B2600/2513 , F25B2700/13 , F25B2700/1931 , F25B2700/195 , F25B2700/197 , F25B2700/2115 , F25B2700/21163 , F25B2700/21175
摘要： A cooling system includes an expansion valve configured to exert a first pressure drop on refrigerant circulated through the cooling system. The cooling system also includes a plurality of capillary expansion tubes fluidly coupled in parallel to an output of the expansion valve and configured to exert a second pressure drop on the refrigerant circulated through the cooling system. The cooling system also includes a controller communicatively coupled to the expansion valve, wherein the controller is configured to control magnitude of the first pressure drop by instructing the expansion valve to adjust the valve position based at least in part on refrigerant mass flow expected to be supplied to the expansion valve to facilitate substantially uniformly distributing the refrigerant mass flow between each of the plurality capillary expansion tubes.
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公开(公告)号：US11274861B2
公开(公告)日：2022-03-15
申请号：US15717743
申请日：2017-09-27
发明人： Ryan L. Snider , Rajiv K. Karkhanis , Chandra S. Yelamanchili , Curtis W. Caskey , Kevin R. Stockton , Nicholas P. Mislak , Douglas A. Kester , Troy E. Smith
摘要： A heating, ventilating, and air conditioning (HVAC) system includes a refrigerant loop having a compressor, where the compressor is configured to circulate a refrigerant through the refrigerant loop, a first heat exchanger disposed along the refrigerant loop, where the first heat exchanger is configured to place the refrigerant in a first heat exchange relationship with a working fluid, and an air handling unit having a second heat exchanger, where the second heat exchanger is configured to place the working fluid in a second heat exchange relationship with an airflow, and where the air handling unit is isolated from the first heat exchanger to reduce or eliminate mixing of refrigerant with the airflow.
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