Source: http://www.google.com/patents/US8156757?dq=7350717
Timestamp: 2017-01-17 09:41:59
Document Index: 583937594

Matched Legal Cases: ['Application No. 200780044367', 'Application No. 200780044367', 'Application No. 2009223279', 'Application No. 2007307051', 'Application No. 2007307051', 'Application No. 200780044367']

Patent US8156757 - High capacity chiller compressor - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. The assembly is highly efficient by virtue of a variable frequency drive (VFD) that drives a permanent magnet motor and matches compressor speed with compressor load, a direct...http://www.google.com/patents/US8156757?utm_source=gb-gplus-sharePatent US8156757 - High capacity chiller compressorAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS8156757 B2Publication typeGrantApplication numberUS 11/868,341Publication dateApr 17, 2012Filing dateOct 5, 2007Priority dateOct 6, 2006Fee statusPaidAlso published asCA2665492A1, CA2665492C, CN101558268A, CN101558268B, EP2061998A2, EP2061998A4, US20080115527, WO2008045413A2, WO2008045413A3Publication number11868341, 868341, US 8156757 B2, US 8156757B2, US-B2-8156757, US8156757 B2, US8156757B2InventorsMark C. Doty, Earl A. Campaigne, JR., Thomas E. Watson, Paul K. Butler, Quentin E. Cline, Samuel J. ShowalterOriginal AssigneeAff-Mcquay Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (94), Non-Patent Citations (17), Referenced by (9), Classifications (41), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetHigh capacity chiller compressor
US 8156757 B2Abstract
2. The chiller system of claim 1 further comprising a throttling device operatively coupled with said gas bypass circuit for regulating a flow rate of said gas refrigerant. Description
In operation, the first impeller 80 a typically imparts a tangential velocity component on the gas refrigerant 94 as the gas refrigerant 94 enters the crossover channel 99. The de-swirl vanes (not depicted) may be designed to remove the tangential velocity component as the gas refrigerant 94 passes through the crossover channel 99, thereby straightening the flow as it enters the second stage 52 b. Inlet Guide Vanes
“A general purpose voltage regulated current-source inverter power supply,” Espinoza, J. R.; Joos, G.; Ziogas, P. D.; Applied Power Electronics Conference and Exposition, 1993. APEC '93. Conference Proceedings 1993, Eighth Annual 7-11 Mar. 1993 Page(s):778-784 “A low-harmonic electric drive system based on current-source inverter,” Yuexin Yin; Wu, A. Y., Industry Applications, IEEE Transactions on Volume 34, Issue 1, January-February 1998 Page(s):227-235 “Voltage control of current source inverters,” Colli, V. D.; Cancelliere, P.; Marignetti, F.; Di Stefano, R.; energy Conversion, IEEE Transactions on Volume 21, Issue 2, June 2006 Page(s):451-458 “A current-source-inverter-fed induction motor drive system with reduced losses,” Espinoza, J. R.; Joos, G.; Industry Applications, IEEE Transactions on Volume 34, Issue 4, July-August 1998 Page(s):796-805 “Implementation of current source inverter for power line conditioning,” Williams, S. M.; Hoft, R. G.; Industry Applications, IEEE Transactions on Volume 27, Issue 4, July-August 1991 Page(s):773-779 “An integrated three-phase voltage regulated current source inverter topology,” Espinoza, J.; Joos, G.; Ziogas, P.; Industrial Electronics, 1993. Conference Proceedings, ISIE'93-Budapest, IEEE International Symposium on 1-3 Jun. 1993 Page(s):663-668 “Brushless permanent magnet (BPM) motor drive system using load-commutated inverter,” Toliyat, H. A.; Sultana, N.; Shet, D. S.; Moreira, J. C.; Power Electronics, IEEE Transactions on Volume 14, Issue 5, September 1999 Page(s):831-837 “High-efficiency drives using permanent-magnet motors,” Slemon, G. R.; Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93, International Conference on 15-19 Nov. 1993 Page(s):725-730 vol. A function of the current chopper 262 (aka step down converter, buck converter or multi-phase buck converter) in various embodiments is to maintain the DC bus voltage at the proper level above the back-emf of the permanent magnet motor 153 and to maintain a constant current source for the permanent magnet motor 153. The current chopper 262 may comprise a network of diodes, large inductors, and switching devices. The switching devices may be a plurality of insulated gate bipolar transistors (IGBTs) that are arranged in parallel and are controlled in an interleaved or multi-phase pattern. This control pattern switches the IGBTs “on” at different points in time which reduces the ripple in the DC link and smoothes the current supply.
Mohan, Ned; Undeland, Tore M., Robbins, William P. (2003). Power Electronics. Hoboken: John Wiley & Sons, Inc. ISBN 0-471-42908-2 Power Electronics. Converters, Applications and Design. N. Mohan, T. M. Undeland and W. P. Robbins. John Wiley&Sons ISBN 0-471-58408-8 Power Electronics. Circuits, Devices and Applications. M. H. Rashid Prentice Hall ISBN 0-13-686619-0. Principles of Power Electronics. J. G. Kassakian, M. F. Schlecht and G. C. Verghese. Addison-Wesley ISBN 0-201-09689-7
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No. 12/404,010, filed Jan. 13, 2009, Doty et al.17Written Opinion of the International Searching Authority (Form PCT/ISA/237) for International Application No: PCT/US07/21536 dated Apr. 4, 2008.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS9157446Dec 4, 2013Oct 13, 2015Danfoss A/SCentrifugal compressor with extended operating rangeUS9291167 *Feb 4, 2013Mar 22, 2016Johnson Controls Technology CompanyHermetic motor cooling and controlUS9398908Oct 30, 2013Jul 26, 2016Prime Datum, Inc.Integrated fan drive system for cooling towerUS9431948Dec 28, 2013Aug 30, 2016Prime Datum, Inc.Integrated fan drive system for air-cooled heat exchangers (ACHE)US9534501May 1, 2014Jan 3, 2017Industrial Technology Research InstituteInlet guide vane assemblyUS20100329898 *Apr 20, 2010Dec 30, 2010Accessible Technologies, Inc.Compressor inlet guide vane controlUS20140363311 *Feb 4, 2013Dec 11, 2014Johnson Controls Technology CompanyHermetic motor cooling and controlUS20150333668 *Jul 22, 2015Nov 19, 2015Trane International Inc.Variable frequency drive active harmonic mitigation controls and diagnosticsWO2014120335A1 *Dec 4, 2013Aug 7, 2014Danfoss Turbocor Compressors B.V.Centrifugal compressor with extended operating range* Cited by examinerClassifications U.S. Classification62/505, 417/42, 62/402, 62/209, 417/372International ClassificationF25B31/00Cooperative ClassificationH02K11/25, F05D2250/51, F04D29/4213, F25B1/053, H02K5/128, F25B49/025, H02K1/32, F25B2600/021, H02K9/19, Y02B30/741, Y10T29/49826, H02K7/09, H02K5/225, F16C32/044, H02K7/14, F25B31/006, F04D27/0261, F04D29/462, F04D29/058, F04D25/0606, H02K9/00, H02K5/20European ClassificationH02K7/09, F04D29/46C, F25B31/00C, H02K1/32, F04D27/02F, H02K9/00, F25B1/053, H02K5/20, F04D29/058, F25B49/02C, F04D25/06B, H02K5/22B, F16C32/04M4Legal EventsDateCodeEventDescriptionJan 25, 2008ASAssignmentOwner name: AAF-MCQUAY INC., MINNESOTAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DOTY, MARK C.;CAMPAIGNE, JR., EARL A.;WATSON, THOMAS E.;AND OTHERS;REEL/FRAME:020416/0376Effective date: 20080116Oct 19, 2015FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services