专利名称：Defrosting A Heat Exchanger In A Heat
Pump By Diverting Warm Refrigerant To AnExhaust Header
发明人：Jie Chen,Jacob J. Rede,David L.
Koesterer,Craig A. Thomas
申请号：US14044786申请日：20131002
公开号：US20140026601A1公开日：20140130
专利附图：
摘要：Heat pumps with improved defrost cycles and methods of defrosting heat
exchangers, for example, having microchannel outdoor heat exchangers. A heat
exchanger has three types of connection points that are used during a defrost cycle. Twoconnection points are used to deliver hot refrigerant gas to the heat exchanger and oneconnection point is where refrigerant exits the heat exchanger. Two of the connectionpoints are at the same header and during at least part of the defrost cycle, at least partof the hot refrigerant gas is passed through that header without passing through anycross tubes of the heat exchanger. A defrost valve in a refrigerant conduit opens duringthe defrost cycle to deliver hot refrigerant gas to the connection point on the header. Ina number of embodiments, the defrost valve is open only during a portion of the defrostcycle.
申请人：Nordyne LLC
地址：O'Fallon MO US
国籍：US
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