Noise reduction centrifugal fan
A noise reduction centrifugal fan comprises a fan body and a shell base. The shell base defines an inner space for containing the fan body, an air inlet located above the fan body and communicated with the inner space, and an air outlet which is formed in the direction perpendicular to the air inlet...
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| creator | PAN JINHUI XU ZHICONG WU XINXIAN CHEN GUANHONG WU ZHANYI |
| description | A noise reduction centrifugal fan comprises a fan body and a shell base. The shell base defines an inner space for containing the fan body, an air inlet located above the fan body and communicated with the inner space, and an air outlet which is formed in the direction perpendicular to the air inlet and communicated with the inner space. A groove which is sunken downwards from the top surface and is adjacent to the air outlet, and a plurality of air holes which are through in the vertical direction and are respectively connected with the groove and the internal space are formed in the shell seat. When airflow in the inner space is output towards the air outlet, the air holes can prolong the noise staying time, meanwhile, noise sound waves transmitted upwards along the air holes can be absorbed by the sound absorption cotton in the groove, and therefore noise is greatly reduced.
一种降噪离心风扇，包含风扇主体及壳座。所述壳座界定出容置所述风扇主体的内部空间、位于所述风扇主体上方且连通所述内部空间的入风口，及开设方向垂直所述入风口且连通所述内部空间的出风口。所述壳座形成由顶面向下凹陷且邻接所述出风口的凹槽，及多个沿上下方向贯通而各自连接所述凹 |
| format | Patent |
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一种降噪离心风扇，包含风扇主体及壳座。所述壳座界定出容置所述风扇主体的内部空间、位于所述风扇主体上方且连通所述内部空间的入风口，及开设方向垂直所述入风口且连通所述内部空间的出风口。所述壳座形成由顶面向下凹陷且邻接所述出风口的凹槽，及多个沿上下方向贯通而各自连接所述凹</description><language>chi ; eng</language><subject>BLASTING ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT PUMPS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; WEAPONS</subject><creationdate>2024</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=20240604&DB=EPODOC&CC=CN&NR=221074774U$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240604&DB=EPODOC&CC=CN&NR=221074774U$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PAN JINHUI</creatorcontrib><creatorcontrib>XU ZHICONG</creatorcontrib><creatorcontrib>WU XINXIAN</creatorcontrib><creatorcontrib>CHEN GUANHONG</creatorcontrib><creatorcontrib>WU ZHANYI</creatorcontrib><title>Noise reduction centrifugal fan</title><description>A noise reduction centrifugal fan comprises a fan body and a shell base. The shell base defines an inner space for containing the fan body, an air inlet located above the fan body and communicated with the inner space, and an air outlet which is formed in the direction perpendicular to the air inlet and communicated with the inner space. A groove which is sunken downwards from the top surface and is adjacent to the air outlet, and a plurality of air holes which are through in the vertical direction and are respectively connected with the groove and the internal space are formed in the shell seat. When airflow in the inner space is output towards the air outlet, the air holes can prolong the noise staying time, meanwhile, noise sound waves transmitted upwards along the air holes can be absorbed by the sound absorption cotton in the groove, and therefore noise is greatly reduced.
一种降噪离心风扇，包含风扇主体及壳座。所述壳座界定出容置所述风扇主体的内部空间、位于所述风扇主体上方且连通所述内部空间的入风口，及开设方向垂直所述入风口且连通所述内部空间的出风口。所述壳座形成由顶面向下凹陷且邻接所述出风口的凹槽，及多个沿上下方向贯通而各自连接所述凹</description><subject>BLASTING</subject><subject>HEATING</subject><subject>LIGHTING</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>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJD3y88sTlUoSk0pTS7JzM9TSE7NKynKTCtNT8xRSEvM42FgTUvMKU7lhdLcDEpuriHOHrqpBfnxqcUFiUD1qSXxzn5GRoYG5ibm5iahocZEKQIAgp8l0g</recordid><startdate>20240604</startdate><enddate>20240604</enddate><creator>PAN JINHUI</creator><creator>XU ZHICONG</creator><creator>WU XINXIAN</creator><creator>CHEN GUANHONG</creator><creator>WU ZHANYI</creator><scope>EVB</scope></search><sort><creationdate>20240604</creationdate><title>Noise reduction centrifugal fan</title><author>PAN JINHUI ; XU ZHICONG ; WU XINXIAN ; CHEN GUANHONG ; WU ZHANYI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN221074774UU3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2024</creationdate><topic>BLASTING</topic><topic>HEATING</topic><topic>LIGHTING</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>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>PAN JINHUI</creatorcontrib><creatorcontrib>XU ZHICONG</creatorcontrib><creatorcontrib>WU XINXIAN</creatorcontrib><creatorcontrib>CHEN GUANHONG</creatorcontrib><creatorcontrib>WU ZHANYI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>PAN JINHUI</au><au>XU ZHICONG</au><au>WU XINXIAN</au><au>CHEN GUANHONG</au><au>WU ZHANYI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Noise reduction centrifugal fan</title><date>2024-06-04</date><risdate>2024</risdate><abstract>A noise reduction centrifugal fan comprises a fan body and a shell base. The shell base defines an inner space for containing the fan body, an air inlet located above the fan body and communicated with the inner space, and an air outlet which is formed in the direction perpendicular to the air inlet and communicated with the inner space. A groove which is sunken downwards from the top surface and is adjacent to the air outlet, and a plurality of air holes which are through in the vertical direction and are respectively connected with the groove and the internal space are formed in the shell seat. When airflow in the inner space is output towards the air outlet, the air holes can prolong the noise staying time, meanwhile, noise sound waves transmitted upwards along the air holes can be absorbed by the sound absorption cotton in the groove, and therefore noise is greatly reduced.
一种降噪离心风扇，包含风扇主体及壳座。所述壳座界定出容置所述风扇主体的内部空间、位于所述风扇主体上方且连通所述内部空间的入风口，及开设方向垂直所述入风口且连通所述内部空间的出风口。所述壳座形成由顶面向下凹陷且邻接所述出风口的凹槽，及多个沿上下方向贯通而各自连接所述凹</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS |
| title | Noise reduction centrifugal fan |
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