EP 3421904 A1 20190102 - COMPRESSOR CYCLING CONTROL FOR VARIABLE FLOW SYSTEMS
Title (en)
COMPRESSOR CYCLING CONTROL FOR VARIABLE FLOW SYSTEMS
Title (de)
VERDICHTERZYKLUSSTEUERUNG FÜR SYSTEME MIT VARIABLER DURCHFLUSSRATE
Title (fr)
RÉGULATION DE CYCLAGE DE COMPRESSEUR POUR SYSTÈMES D'ÉCOULEMENT VARIABLE
Publication
Application
Priority
US 201715633333 A 20170626
Abstract (en)
Systems and methods for preventing excessive restarting of compressors (12) in variable primary flow systems operating at low loads, with system embodiments including temperature sensors both upstream and downstream from a heat exchanger (14), using the sensor downstream from the heat exchanger to determine when to stop a compressor and the sensor upstream from the heat exchanger to determine when to start the compressor. Methods may include a delay period between restarting operations of the compressor, or use a soft loading period in which the compressor is operated at a low level to reduce the frequency of starts and stops.
IPC 8 full level
F25B 1/00 (2006.01); F24F 11/00 (2018.01); F25B 25/00 (2006.01); F25B 49/02 (2006.01)
CPC (source: CN EP US)
F04B 49/065 (2013.01 - CN); F25B 1/00 (2013.01 - EP US); F25B 25/005 (2013.01 - EP US); F25B 49/005 (2013.01 - US); F25B 49/022 (2013.01 - EP US); F24F 11/30 (2018.01 - EP US); F25B 2500/26 (2013.01 - EP US); F25B 2500/27 (2013.01 - EP US); F25B 2600/0251 (2013.01 - EP US); F25B 2700/21 (2013.01 - EP US); F25B 2700/21172 (2013.01 - EP US); F25B 2700/21173 (2013.01 - EP US)
Citation (search report)
- [XY] EP 2075515 A1 20090701 - MITSUBISHI HEAVY IND LTD [JP]
- [XY] JP 2003336913 A 20031128 - DAIKIN IND LTD
- [Y] EP 3073213 A1 20160928 - MITSUBISHI HEAVY IND LTD [JP]
- [A] KR 20150125782 A 20151110 - HI AIR KOREA CO LTD [KR]
- [A] WO 2014021931 A1 20140206 - PARKER HANNIFIN CORP [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3421904 A1 20190102; CN 109113974 A 20190101; CN 109113974 B 20220524; US 2018372385 A1 20181227
DOCDB simple family (application)
EP 18179322 A 20180622; CN 201810672409 A 20180626; US 201715633333 A 20170626