EP 2074357 A1 20090701 - REFRIGERANT SYSTEM WITH MULTI-SPEED PULSE WIDTH MODULATED COMPRESSOR
Title (en)
REFRIGERANT SYSTEM WITH MULTI-SPEED PULSE WIDTH MODULATED COMPRESSOR
Title (de)
KÄLTEMITTELSYSTEM MIT PULSBREITENMODULIERTEM MEHRGESCHWINDIGKEITSKOMPRESSOR
Title (fr)
SYSTÈME RÉFRIGÉRANT AVEC COMPRESSEUR À MODULATION D'IMPULSIONS EN DURÉE À VITESSE MULTIPLE
Publication
Application
Priority
US 2006039583 W 20061006
Abstract (en)
[origin: WO2008041996A1] A refrigerant system is provided with a compressor having a motor that is operable at least at two distinct speeds. The pulse width modulation control is provided to cycle a compressor motor operation between its at least two speeds at a specific rate to exactly match thermal load demands in a conditioned space. The present invention reduces cycling and other efficiency losses as have been experienced in the prior art, as well as minimizes cost and may improve reliability. Also, the present invention can be utilized in conjunction with other known unloading techniques.
IPC 8 full level
F04B 49/00 (2006.01); F25B 1/00 (2006.01); F25B 41/04 (2006.01); F25B 49/00 (2006.01)
CPC (source: EP US)
F04C 18/0215 (2013.01 - EP US); F04C 23/008 (2013.01 - EP US); F04C 28/08 (2013.01 - EP US); F04C 29/042 (2013.01 - EP US); F25B 49/025 (2013.01 - EP US); F25B 41/22 (2021.01 - EP US); F25B 2400/13 (2013.01 - EP US); F25B 2600/0252 (2013.01 - EP US); F25B 2600/0261 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008041996 A1 20080410; CN 101523129 A 20090902; CN 101523129 B 20110119; EP 2074357 A1 20090701; EP 2074357 A4 20130612; HK 1136617 A1 20100702; US 2009308086 A1 20091217
DOCDB simple family (application)
US 2006039583 W 20061006; CN 200680056044 A 20061006; EP 06825706 A 20061006; HK 10101929 A 20100224; US 37525509 A 20090127