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1. WO2006098808 - DUAL MODE COMPRESSOR WITH AUTOMATIC COMPRESSION RATIO ADJUSTMENT FOR ADAPTING TO MULTIPLE OPERATING CONDITIONS

Publication Number WO/2006/098808
Publication Date 21.09.2006
International Application No. PCT/US2006/002175
International Filing Date 20.01.2006
IPC
F25B 7/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
7Compression machines, plant, or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
CPC
F25B 1/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
1Compression machines, plant, or systems with non-reversible cycle
02with compressor of reciprocating-piston type
F25B 1/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
1Compression machines, plant, or systems with non-reversible cycle
10with multi-stage compression
F25B 2400/073
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2400General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
07Details of compressors or related parts
073Linear compressors
F25B 2400/075
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2400General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
07Details of compressors or related parts
075with parallel compressors
F25B 2600/0261
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2600Control issues
02Compressor control
026by controlling unloaders
0261external to the compressor
F25B 2600/2507
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2600Control issues
25Control of valves
2507Flow-diverting valves
Applicants
  • SUNPOWER, INC. [US]/[US] (AllExceptUS)
  • UNGER, Reuven, Z-M. [US]/[US] (UsOnly)
  • COLLINS, Joshua, E. [US]/[US] (UsOnly)
Inventors
  • UNGER, Reuven, Z-M.
  • COLLINS, Joshua, E.
Agents
  • FOSTER, Frank, H.
Priority Data
11/077,51810.03.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DUAL MODE COMPRESSOR WITH AUTOMATIC COMPRESSION RATIO ADJUSTMENT FOR ADAPTING TO MULTIPLE OPERATING CONDITIONS
(FR) COMPRESSEUR DOUBLE MODE POURVU D'UN AJUSTEMENT DU RAPPORT DE COMPRESSION AUTOMATIQUE PERMETTANT UNE ADAPTATION A PLUSIEURS CONDITIONS DE FONCTIONNEMENT
Abstract
(EN)
An apparatus and method for compressing gas refrigerant using two different compressors operated alternatively in a series or parallel mode for obtaining two different compression ratios and thereby provide efficient operation for both a relatively lower suction pressure and a relatively higher suction pressure. This system avoids an unbalanced mass flow rate when the compressors are operated in series by unloading a downstream one of the compressors. When operated in the series mode, refrigerant is bypassed back to a suction inlet of the downstream compressor during a portion of a compression stroke of the downstream compressor for equalizing the mass flow rate through the two compressors.
(FR)
La présente invention concerne un dispositif et un procédé permettant de comprimer un frigorigène gazeux au moyen de deux compresseurs différents activés alternativement en mode série ou en mode simultané afin d'obtenir deux rapports de compression différents et, ainsi, d'obtenir un fonctionnement efficace à la fois d'une pression d'aspiration relativement plus basse et d'une pression d'aspiration relativement plus élevée. Le système décrit dans cette invention permet d'éviter un débit massique déséquilibré lorsque les compresseurs sont activés en série par déchargement du compresseur en aval. En mode série, le frigorigène est dévié vers un orifice d'amenée par aspiration du compresseur en aval durant une partie de la course de compression du compresseur en aval afin d'égaliser le débit massique à travers les deux compresseurs.
Also published as
EP6719138
Latest bibliographic data on file with the International Bureau