OIL-FREE LIQUID CHILLER
A refrigeration chiller (10) employs a centrifugal compressor (12) the impellers (42, 44) of which are mounted on a shaft (48) which it itself mounted for rotation using rolling element (53) bearings (52) lubricated only by the refrigerant which constitutes the working fluid of the chiller system (1...
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| creator | VANDELEEST, TODD R EBER, DAVID H TISCHER, JAMES C BUTTERWORTH, ARTHUR L |
| description | A refrigeration chiller (10) employs a centrifugal compressor (12) the impellers (42, 44) of which are mounted on a shaft (48) which it itself mounted for rotation using rolling element (53) bearings (52) lubricated only by the refrigerant which constitutes the working fluid of the chiller system (10). Apparatus is taught for providing liquid refrigerant to (1.) the bearings (25) immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller (10) and (2.) the drive motor (40) of the chiller's compressor (12) for motor cooling purposes. By use of a variable speed-driven motor (40) to drive the compressor (12), optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrification system. |
| format | Patent |
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Apparatus is taught for providing liquid refrigerant to (1.) the bearings (25) immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller (10) and (2.) the drive motor (40) of the chiller's compressor (12) for motor cooling purposes. By use of a variable speed-driven motor (40) to drive the compressor (12), optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrification system.</description><language>eng ; fre</language><subject>BEARINGS ; BLASTING ; COMBINED HEATING AND REFRIGERATION SYSTEMS ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; DYNAMO-ELECTRIC MACHINES ; ELECTRICITY ; ELEMENTS OR CRANKSHAFT MECHANISMS ; ENGINEERING ELEMENTS AND UNITS ; FLEXIBLE SHAFTS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; GENERATION ; HEAT PUMP SYSTEMS ; HEATING ; LIGHTING ; LIQUEFACTION SOLIDIFICATION OF GASES ; LUBRICATING ; MANUFACTURE OR STORAGE OF ICE ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT PUMPS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; REFRIGERATION MACHINES, PLANTS OR SYSTEMS ; REFRIGERATION OR COOLING ; ROTARY BODIES OTHER THAN GEARING ELEMENTS ; SHAFTS ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2008</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080617&DB=EPODOC&CC=CA&NR=2342909C$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25555,76308</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080617&DB=EPODOC&CC=CA&NR=2342909C$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>VANDELEEST, TODD R</creatorcontrib><creatorcontrib>EBER, DAVID H</creatorcontrib><creatorcontrib>TISCHER, JAMES C</creatorcontrib><creatorcontrib>BUTTERWORTH, ARTHUR L</creatorcontrib><title>OIL-FREE LIQUID CHILLER</title><description>A refrigeration chiller (10) employs a centrifugal compressor (12) the impellers (42, 44) of which are mounted on a shaft (48) which it itself mounted for rotation using rolling element (53) bearings (52) lubricated only by the refrigerant which constitutes the working fluid of the chiller system (10). Apparatus is taught for providing liquid refrigerant to (1.) the bearings (25) immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller (10) and (2.) the drive motor (40) of the chiller's compressor (12) for motor cooling purposes. By use of a variable speed-driven motor (40) to drive the compressor (12), optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrification system.</description><subject>BEARINGS</subject><subject>BLASTING</subject><subject>COMBINED HEATING AND REFRIGERATION SYSTEMS</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>DYNAMO-ELECTRIC MACHINES</subject><subject>ELECTRICITY</subject><subject>ELEMENTS OR CRANKSHAFT MECHANISMS</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>FLEXIBLE SHAFTS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>GENERATION</subject><subject>HEAT PUMP SYSTEMS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>LIQUEFACTION SOLIDIFICATION OF GASES</subject><subject>LUBRICATING</subject><subject>MANUFACTURE OR STORAGE OF ICE</subject><subject>MECHANICAL ENGINEERING</subject><subject>NON-POSITIVE DISPLACEMENT PUMPS</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>REFRIGERATION MACHINES, PLANTS OR SYSTEMS</subject><subject>REFRIGERATION OR COOLING</subject><subject>ROTARY BODIES OTHER THAN GEARING ELEMENTS</subject><subject>SHAFTS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBD39_TRdQtydVXw8QwM9XRRcPbw9PFxDeJhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfHOjkbGJkaWBpbOxoRVAABJah5c</recordid><startdate>20080617</startdate><enddate>20080617</enddate><creator>VANDELEEST, TODD R</creator><creator>EBER, DAVID H</creator><creator>TISCHER, JAMES C</creator><creator>BUTTERWORTH, ARTHUR L</creator><scope>EVB</scope></search><sort><creationdate>20080617</creationdate><title>OIL-FREE LIQUID CHILLER</title><author>VANDELEEST, TODD R ; EBER, DAVID H ; TISCHER, JAMES C ; BUTTERWORTH, ARTHUR L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CA2342909C3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2008</creationdate><topic>BEARINGS</topic><topic>BLASTING</topic><topic>COMBINED HEATING AND REFRIGERATION SYSTEMS</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>DYNAMO-ELECTRIC MACHINES</topic><topic>ELECTRICITY</topic><topic>ELEMENTS OR CRANKSHAFT MECHANISMS</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>FLEXIBLE SHAFTS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>GENERATION</topic><topic>HEAT PUMP SYSTEMS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>LIQUEFACTION SOLIDIFICATION OF GASES</topic><topic>LUBRICATING</topic><topic>MANUFACTURE OR STORAGE OF ICE</topic><topic>MECHANICAL ENGINEERING</topic><topic>NON-POSITIVE DISPLACEMENT PUMPS</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>REFRIGERATION MACHINES, PLANTS OR SYSTEMS</topic><topic>REFRIGERATION OR COOLING</topic><topic>ROTARY BODIES OTHER THAN GEARING ELEMENTS</topic><topic>SHAFTS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>VANDELEEST, TODD R</creatorcontrib><creatorcontrib>EBER, DAVID H</creatorcontrib><creatorcontrib>TISCHER, JAMES C</creatorcontrib><creatorcontrib>BUTTERWORTH, ARTHUR L</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VANDELEEST, TODD R</au><au>EBER, DAVID H</au><au>TISCHER, JAMES C</au><au>BUTTERWORTH, ARTHUR L</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OIL-FREE LIQUID CHILLER</title><date>2008-06-17</date><risdate>2008</risdate><abstract>A refrigeration chiller (10) employs a centrifugal compressor (12) the impellers (42, 44) of which are mounted on a shaft (48) which it itself mounted for rotation using rolling element (53) bearings (52) lubricated only by the refrigerant which constitutes the working fluid of the chiller system (10). Apparatus is taught for providing liquid refrigerant to (1.) the bearings (25) immediately upon chiller start-up, during chiller operation and during a coastdown period subsequent to shutdown of the chiller (10) and (2.) the drive motor (40) of the chiller's compressor (12) for motor cooling purposes. By use of a variable speed-driven motor (40) to drive the compressor (12), optimized part load chiller performance is achieved in a chiller which does not require or employ an oil-based lubrification system.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre |
| recordid | cdi_epo_espacenet_CA2342909C |
| source | esp@cenet |
| subjects | BEARINGS BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES LUBRICATING MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS |
| title | OIL-FREE LIQUID CHILLER |
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