Dual pump down cycle for protecting a compressor in a refrigeration system
作者： Richard Gary Lord
DOI:
关键词: Air source heat pumps 、 Automotive engineering 、 Flash-gas 、 Refrigeration 、 Control theory 、 Heat pump and refrigeration cycle 、 Engineering 、 Reversing valve 、 Variable refrigerant flow 、 Thermal expansion valve 、 Economizer
摘要: A method and control system are disclosed for operating a refrigeration to protect the compressor from flooding at startup of system. When is be shut down, refrigerant flow condenser an evaporator effectively closed off run first preselected time period sufficient reduce pressure in desired, relatively low level. Then, prior restarting system, again with pump out second level.This dual down cycle ensures that no liquid will enter when restarted.
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