FAN
PROBLEM TO BE SOLVED: To reduce the vibration of a fan associated with an increase of a wind volume caused by the high-speed rotation of the cooling fan.SOLUTION: The fan includes a motor and an impeller, the static part of the motor is composed of a stator 32 and a bearing 44, the bearing comprises...
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| creator | HIRONO TEIICHI IKEGAMI SHOJI NODA SHINICHIRO HASEGAWA TOMOHIRO FUJIMOTO MASAFUMI |
| description | PROBLEM TO BE SOLVED: To reduce the vibration of a fan associated with an increase of a wind volume caused by the high-speed rotation of the cooling fan.SOLUTION: The fan includes a motor and an impeller, the static part of the motor is composed of a stator 32 and a bearing 44, the bearing comprises a sleeve 47 being a metal sintered compact and a cylindrical bearing housing 48, and a rotating part has a rotor magnet, a shaft 41 inserted into the sleeve and a thrust plate 42 which expands to the radial direction from the lower end of the shaft. A radial dynamic-pressure bearing for generating the fluid dynamic pressure of lubricating oil flowing to the lower part in the axial direction is constituted in a radial gap between the inner peripheral surface of the sleeve and the outer peripheral surface of the shaft, a thrust dynamic-pressure bearing for generating the fluid dynamic pressure of lubricating oil flowing to the inside in the radial direction is constituted in a thrust gap between the lower surface of the sleeve and the upper surface of the thrust plate, a circulation hole 445 extending in the axial direction is located between the sleeve and the bearing housing, and the width in the radial direction of the radial gap is ≥5 μm and ≤20 μm. |
| format | Patent |
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A radial dynamic-pressure bearing for generating the fluid dynamic pressure of lubricating oil flowing to the lower part in the axial direction is constituted in a radial gap between the inner peripheral surface of the sleeve and the outer peripheral surface of the shaft, a thrust dynamic-pressure bearing for generating the fluid dynamic pressure of lubricating oil flowing to the inside in the radial direction is constituted in a thrust gap between the lower surface of the sleeve and the upper surface of the thrust plate, a circulation hole 445 extending in the axial direction is located between the sleeve and the bearing housing, and the width in the radial direction of the radial gap is ≥5 μm and ≤20 μm.</description><language>eng</language><subject>BEARINGS ; BLASTING ; 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 ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT PUMPS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; ROTARY BODIES OTHER THAN GEARING ELEMENTS ; SHAFTS ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2013</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=20130214&DB=EPODOC&CC=JP&NR=2013032835A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20130214&DB=EPODOC&CC=JP&NR=2013032835A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HIRONO TEIICHI</creatorcontrib><creatorcontrib>IKEGAMI SHOJI</creatorcontrib><creatorcontrib>NODA SHINICHIRO</creatorcontrib><creatorcontrib>HASEGAWA TOMOHIRO</creatorcontrib><creatorcontrib>FUJIMOTO MASAFUMI</creatorcontrib><title>FAN</title><description>PROBLEM TO BE SOLVED: To reduce the vibration of a fan associated with an increase of a wind volume caused by the high-speed rotation of the cooling fan.SOLUTION: The fan includes a motor and an impeller, the static part of the motor is composed of a stator 32 and a bearing 44, the bearing comprises a sleeve 47 being a metal sintered compact and a cylindrical bearing housing 48, and a rotating part has a rotor magnet, a shaft 41 inserted into the sleeve and a thrust plate 42 which expands to the radial direction from the lower end of the shaft. 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A radial dynamic-pressure bearing for generating the fluid dynamic pressure of lubricating oil flowing to the lower part in the axial direction is constituted in a radial gap between the inner peripheral surface of the sleeve and the outer peripheral surface of the shaft, a thrust dynamic-pressure bearing for generating the fluid dynamic pressure of lubricating oil flowing to the inside in the radial direction is constituted in a thrust gap between the lower surface of the sleeve and the upper surface of the thrust plate, a circulation hole 445 extending in the axial direction is located between the sleeve and the bearing housing, and the width in the radial direction of the radial gap is ≥5 μm and ≤20 μm.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_JP2013032835A |
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| subjects | BEARINGS BLASTING 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 HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS |
| title | FAN |
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