TURBOFAN AND AIR CONDITIONER
Of plural vanes (23) provided between a shroud (22) and a main plate (21), a shape on a side of a negative-pressure surface (K) in a section cut in parallel with a surface direction of the main plate (21) includes a recess portion (30) and a curved portion (35). The recess portion (30) is recessed t...
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| creator | KANAGAWA, KEIKO ISHIJIMA, MITSUYOSHI KOMIYAMA, YOSHIHIRO |
| description | Of plural vanes (23) provided between a shroud (22) and a main plate (21), a shape on a side of a negative-pressure surface (K) in a section cut in parallel with a surface direction of the main plate (21) includes a recess portion (30) and a curved portion (35). The recess portion (30) is recessed toward a side of a positive-pressure surface (D) except for a leading edge portion (Ef), which is an inner circumferential side. The curved portion (35) is continuously provided from the recess portion (30) to a leading edge portion, and is expanded toward the negative-pressure surface side. A maximum thickness position (Q) of the curved portion (35) is set at a position in a range of 10% to 30% of a vane chord length from a front end of the leading edge portion, whereby airflow separation is inhibited to achieve an increased flow volume and noise reduction. |
| format | Patent |
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The recess portion (30) is recessed toward a side of a positive-pressure surface (D) except for a leading edge portion (Ef), which is an inner circumferential side. The curved portion (35) is continuously provided from the recess portion (30) to a leading edge portion, and is expanded toward the negative-pressure surface side. A maximum thickness position (Q) of the curved portion (35) is set at a position in a range of 10% to 30% of a vane chord length from a front end of the leading edge portion, whereby airflow separation is inhibited to achieve an increased flow volume and noise reduction.</description><language>eng ; fre ; ger</language><subject>AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING ; BLASTING ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT PUMPS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; RANGES ; VENTILATING ; 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=20081210&DB=EPODOC&CC=EP&NR=2000676A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20081210&DB=EPODOC&CC=EP&NR=2000676A2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KANAGAWA, KEIKO</creatorcontrib><creatorcontrib>ISHIJIMA, MITSUYOSHI</creatorcontrib><creatorcontrib>KOMIYAMA, YOSHIHIRO</creatorcontrib><title>TURBOFAN AND AIR CONDITIONER</title><description>Of plural vanes (23) provided between a shroud (22) and a main plate (21), a shape on a side of a negative-pressure surface (K) in a section cut in parallel with a surface direction of the main plate (21) includes a recess portion (30) and a curved portion (35). The recess portion (30) is recessed toward a side of a positive-pressure surface (D) except for a leading edge portion (Ef), which is an inner circumferential side. The curved portion (35) is continuously provided from the recess portion (30) to a leading edge portion, and is expanded toward the negative-pressure surface side. 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The recess portion (30) is recessed toward a side of a positive-pressure surface (D) except for a leading edge portion (Ef), which is an inner circumferential side. The curved portion (35) is continuously provided from the recess portion (30) to a leading edge portion, and is expanded toward the negative-pressure surface side. A maximum thickness position (Q) of the curved portion (35) is set at a position in a range of 10% to 30% of a vane chord length from a front end of the leading edge portion, whereby airflow separation is inhibited to achieve an increased flow volume and noise reduction.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP2000676A2 |
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| subjects | AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS RANGES VENTILATING WEAPONS |
| title | TURBOFAN AND AIR CONDITIONER |
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