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특허 상세정보

Back pressure control for improved system operative efficiency

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F25B-043/00   
미국특허분류(USC) 62/193 ; ; 62/210 ; ; 62/470
출원번호 US-0557390 (1995-11-13)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 28  인용 특허 : 0
초록

A normally closed valve is located downstream of the oil separator to insure that sufficient oil pressure builds up to lubricate the compressor. The valve is responsive to the differential pressure between discharge and economizer such that throttling takes place over a limited portion of the operating envelope.

대표
청구항

In a closed refrigeration system having an operating envelope and serially including a compressor, an oil separator, a normally closed valve, a condenser, an economizer means and an evaporator means, valve control means comprising: said normally closed valve being fluidly connected to said economizer means whereby economizer pressure tends to bias said valve closed; compressor discharge pressure acting on said normally closed valve so as to provide an opening bias thereto, whereby said valve provides a throttling of flow through said valve over a limited...

이 특허를 인용한 특허 피인용횟수: 28

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  8. Beekman, Dennis M.; Johnson, Jay H.; Lakowske, Rodney L.; Smith, Sean A.; Moilanen, John R.. Compressor discharge valve providing freeze and charge migration protection. USP2012088234877.
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  10. Wu, Man Wai; Zhang, Li Yi. Compressor with vapor injection system. USP2014048695369.
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  12. Sishtla Vishnu M.. Part load performance of variable speed screw compressor. USP2001046216474.
  13. Leaver Daniel C. ; Smith Sean A.. Refrigeration chiller with assured start-up lubricant supply. USP2000096116046.
  14. Yong Huang ; Vipen K. Khetarpal. Refrigeration circuit for vehicular air conditioning system. USP2002026349561.
  15. Bernhardt, Jean-Marc; Deschildre, Cindy; Fauve, Eric; Grillot, David. Refrigeration method and installation. USP20180810060653.
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  17. McSweeney, Daniel L.; Seibel, Stephen M.; Pham, Hung M.. System and method for calculating parameters for a refrigeration system with a variable speed compressor. USP2016119494354.
  18. McSweeney, Daniel L.. System and method for calibrating parameters for a refrigeration system with a variable speed compressor. USP2017019541907.
  19. McSweeney, Daniel L.; Seibel, Stephen M.. System and method for evaluating parameters for a refrigeration system with a variable speed compressor. USP2013058448459.
  20. McSweeney, Daniel L.. System and method for monitoring compressor floodback. USP2015069057549.
  21. McSweeney, Daniel L.. System and method for monitoring compressor floodback. USP2016109476625.
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  23. Pearson, Stephen Forbes. Transcritical refrigeration cycle. USP2010127845190.
  24. Senf, Jr., Raymond L.; Reason, John R.. Transport refrigeration system and methods for same to address dynamic conditions. USP20181010107536.
  25. Pham, Hung M.; Seibel, Stephen M.. Variable speed compressor protection system and method. USP2016119494158.
  26. Seibel, Stephen M.; Pham, Hung M.. Variable speed compressor protection system and method. USP20180910077774.
  27. Caillat, Jean-Luc M.. Vibration protection in a variable speed compressor. USP2017069683563.
  28. Caillat, Jean-Luc M.. Vibration protection in a variable speed compressor. USP2014098849613.