公开(公告)号：US07032395B2

公开(公告)日：2006-04-25

申请号：US10395744

申请日：2003-03-24

申请人： Jay L. Hanson ,  Steven B. Helgeson

发明人： Jay L. Hanson ,  Steven B. Helgeson

IPC分类号： F25D21/06

CPC分类号： B60H1/321 ,  B60H1/3232 ,  B60H2001/3261 ,  F25D21/002 ,  F25D29/003 ,  F25D2700/10 ,  F25D2700/14

摘要： A transport temperature control unit and methods of defrosting an evaporator coil of a transport temperature control unit. The transport temperature control unit includes an evaporator coil, an ambient air temperature sensor for sensing an ambient air temperature, a return air temperature sensor for sensing a return air temperature, a discharge air temperature sensor for sensing a discharge air temperature, an evaporator coil temperature sensor for sensing an evaporator coil temperature, and a controller. The controller initiates a defrost cycle when a large temperature differential occurs over the evaporator coil.