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公开(公告)号：US20130092357A1
公开(公告)日：2013-04-18
申请号：US13806003
申请日：2011-10-20
申请人： Seiji Sato , Tsuyoshi Eguchi , Atusi Suzuki
发明人： Seiji Sato , Tsuyoshi Eguchi , Atusi Suzuki
CPC分类号： F04D29/4226 , F04D29/403 , F04D29/4233 , F04D29/441 , F04D29/661 , F05D2250/52 , F05D2260/96 , F24F1/0022 , F24F13/24 , F28F13/12
摘要： Provided are a low-noise, high-performance multiblade centrifugal fan that suppresses interference between rotational flows generated within extension sections that are extended in a rotation-axis direction at upper and lower end surfaces of a scroll casing, and an air conditioner equipped with the same. In a multiblade centrifugal fan having an impeller disposed in a rotatable manner about a rotation shaft within a scroll casing having a flow path whose cross section gradually increases in a rotational direction, at least one of upper and lower end surfaces of the scroll casing serves as an inclined end surface that is extended in the extending direction of the rotation shaft such that an extended height thereof gradually increases in the rotational direction from a scroll start position, and a stepped section extending in the rotational direction is provided between the inclined end surface and an inner-peripheral side surface of an extension section.
摘要翻译： 提供一种低噪声，高性能的多叶片式离心风扇，其抑制在涡旋壳体的上端面和下端面上沿旋转轴线方向延伸的延伸部内产生的旋转流之间的干涉，以及装备有 相同。 在具有可旋转地设置在涡旋壳体内的旋转轴的叶片的多叶片离心式风扇中，所述涡旋壳体的横截面在旋转方向上逐渐增大，所述涡旋壳体的上端面和下端面中的至少一方作为 倾斜端面沿着旋转轴的延伸方向延伸，使得其延伸高度从涡旋开始位置沿旋转方向逐渐增大，并且在倾斜端面和 延伸部分的内周侧表面。
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公开(公告)号：US09334875B2
公开(公告)日：2016-05-10
申请号：US13806003
申请日：2011-10-20
申请人： Seiji Sato , Tsuyoshi Eguchi , Atusi Suzuki
发明人： Seiji Sato , Tsuyoshi Eguchi , Atusi Suzuki
CPC分类号： F04D29/4226 , F04D29/403 , F04D29/4233 , F04D29/441 , F04D29/661 , F05D2250/52 , F05D2260/96 , F24F1/0022 , F24F13/24 , F28F13/12
摘要： Provided are a low-noise, high-performance multiblade centrifugal fan that suppresses interference between rotational flows generated within extension sections that are extended in a rotation-axis direction at upper and lower end surfaces of a scroll casing, and an air conditioner equipped with the same. In a multiblade centrifugal fan having an impeller disposed in a rotatable manner about a rotation shaft within a scroll casing having a flow path whose cross section gradually increases in a rotational direction, at least one of upper and lower end surfaces of the scroll casing serves as an inclined end surface that is extended in the extending direction of the rotation shaft such that an extended height thereof gradually increases in the rotational direction from a scroll start position, and a stepped section extending in the rotational direction is provided between the inclined end surface and an inner-peripheral side surface of an extension section.
摘要翻译： 提供一种低噪声，高性能的多叶片式离心风扇，其抑制在涡旋壳体的上端面和下端面上沿旋转轴线方向延伸的延伸部内产生的旋转流之间的干涉，以及装备有 相同。 在具有可旋转地设置在涡旋壳体内的旋转轴的叶片的多叶片离心式风扇中，所述涡旋壳体的横截面在旋转方向上逐渐增大，所述涡旋壳体的上端面和下端面中的至少一方作为 倾斜端面沿着旋转轴的延伸方向延伸，使得其延伸高度从涡旋开始位置沿旋转方向逐渐增大，并且在倾斜端面和 延伸部分的内周侧表面。
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