JP2013199870A5 - - Google Patents

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Publication number
JP2013199870A5
JP2013199870A5 JP2012068413A JP2012068413A JP2013199870A5 JP 2013199870 A5 JP2013199870 A5 JP 2013199870A5 JP 2012068413 A JP2012068413 A JP 2012068413A JP 2012068413 A JP2012068413 A JP 2012068413A JP 2013199870 A5 JP2013199870 A5 JP 2013199870A5
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JP
Japan
Prior art keywords
pressure surface
blade
impeller
respect
hub
Prior art date
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Granted
Application number
JP2012068413A
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Japanese (ja)
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JP2013199870A (en
JP5882804B2 (en
Filing date
Publication date
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Priority to JP2012068413A priority Critical patent/JP5882804B2/en
Priority claimed from JP2012068413A external-priority patent/JP5882804B2/en
Publication of JP2013199870A publication Critical patent/JP2013199870A/en
Publication of JP2013199870A5 publication Critical patent/JP2013199870A5/ja
Application granted granted Critical
Publication of JP5882804B2 publication Critical patent/JP5882804B2/en
Expired - Fee Related legal-status Critical Current
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Claims (6)

円環形状をなすハブと、
前記ハブの外周面に沿って放射状に配置される複数のブレードと、
を備え、
回転軸線に沿って前記ブレードの前縁側から流れ込んだ流体が、前記回転軸線に交差する半径方向の外側に向かって前記ブレードの後縁側から排出されるインペラにおいて、
前記ブレードの圧力面は、前記ハブ側から回転方向の前方に対して９０度以下の角度で延出する第１圧力面と、
前記第１圧力面から回転方向の前方に対して９０度より大きい角度で延出する第２圧力面と、
を有し、
前記ブレードの圧力面は、前記第２圧力面から回転方向の前方に対して９０度以下の角度で延出する第３圧力面を有し、内周側が回転方向の前方側に向けて湾曲する湾曲形状をなす一方、外周側が前記第１圧力面と前記第２圧力面と前記第３圧力面を有するＳ字形状をなす、
ことを特徴とするインペラ。 An annular hub,
A plurality of blades arranged radially along the outer peripheral surface of the hub;
With
In the impeller, the fluid flowing from the leading edge side of the blade along the rotation axis is discharged from the trailing edge side of the blade toward the radially outer side intersecting the rotation axis.
A pressure surface of the blade extends from the hub side at an angle of 90 degrees or less with respect to the front in the rotational direction;
A second pressure surface extending from the first pressure surface at an angle greater than 90 degrees with respect to the front in the rotational direction;
I have a,
The pressure surface of the blade has a third pressure surface extending from the second pressure surface at an angle of 90 degrees or less with respect to the front in the rotation direction, and the inner peripheral side is curved toward the front side in the rotation direction. While forming a curved shape, the outer peripheral side has an S shape having the first pressure surface, the second pressure surface, and the third pressure surface.
Impeller characterized by that. 前記第１圧力面と前記第３圧力面は、前記ハブに対して回転方向の前方へ傾斜していることを特徴とする請求項１に記載のインペラ。 2. The impeller according to claim 1 , wherein the first pressure surface and the third pressure surface are inclined forward in the rotational direction with respect to the hub. 前記ブレードの圧力面は、少なくとも外周側に前記第２圧力面が設けられることを特徴とする請求項１または２に記載のインペラ。 The impeller according to claim 1 or 2 , wherein the pressure surface of the blade is provided with the second pressure surface at least on the outer peripheral side. 前記第２圧力面は、前記ハブから前記ブレードにおける回転軸心方向の長さの１／２以下の位置に設けられることを特徴とする請求項１から３のいずれか一つに記載のインペラ。 The impeller according to any one of claims 1 to 3 , wherein the second pressure surface is provided at a position that is 1/2 or less of a length of the blade in the direction of the rotation axis from the hub. 前記第２圧力面は、回転方向の前方側に位置する前記ブレードの先端部の負圧面に対向していることを特徴とする請求項１から４のいずれか一つに記載のインペラ。 The impeller according to any one of claims 1 to 4 , wherein the second pressure surface is opposed to a negative pressure surface of a tip portion of the blade located on a front side in a rotation direction. 中空形状をなすケーシングと、
円環形状をなすハブの外周面に沿って複数のブレードが放射状に配置されて前記ケーシング内に回転自在に支持されるインペラと、
前記インペラに対して流体が該インペラの前縁側から軸方向に沿って吸入される吸入通路と、
前記インペラで圧送された流体が該インペラの軸方向に交差する半径方向の外側に向かって前記ブレードの後縁側から排出される排出通路と、
を備え、
前記ブレードの圧力面は、前記ハブ側から回転方向の前方に対して９０度以下の角度で延出する第１圧力面と、
前記第１圧力面から回転方向の前方に対して９０度より大きい角度で延出する第２圧力面と、
を有し、
前記ブレードの圧力面は、前記第２圧力面から回転方向の前方に対して９０度以下の角度で延出する第３圧力面を有し、内周側が回転方向の前方側に向けて湾曲する湾曲形状をなす一方、外周側が前記第１圧力面と前記第２圧力面と前記第３圧力面を有するＳ字形状をなす、
ことを特徴とする流体機械。 A hollow casing,
An impeller in which a plurality of blades are arranged radially along the outer peripheral surface of the annular hub and are rotatably supported in the casing;
A suction passage through which fluid is sucked in the axial direction from the front edge side of the impeller;
A discharge passage through which the fluid pumped by the impeller is discharged from the trailing edge side of the blade toward the outside in the radial direction intersecting the axial direction of the impeller;
With
A pressure surface of the blade extends from the hub side at an angle of 90 degrees or less with respect to the front in the rotational direction;
A second pressure surface extending from the first pressure surface at an angle greater than 90 degrees with respect to the front in the rotational direction;
I have a,
The pressure surface of the blade has a third pressure surface extending from the second pressure surface at an angle of 90 degrees or less with respect to the front in the rotation direction, and the inner peripheral side is curved toward the front side in the rotation direction. While forming a curved shape, the outer peripheral side has an S shape having the first pressure surface, the second pressure surface, and the third pressure surface.
A fluid machine characterized by that.
JP2012068413A 2012-03-23 2012-03-23 Impeller and fluid machinery Expired - Fee Related JP5882804B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012068413A JP5882804B2 (en) 2012-03-23 2012-03-23 Impeller and fluid machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012068413A JP5882804B2 (en) 2012-03-23 2012-03-23 Impeller and fluid machinery

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2015148769A Division JP6053882B2 (en) 2015-07-28 2015-07-28 Impeller and fluid machinery
JP2016020106A Division JP6200531B2 (en) 2016-02-04 2016-02-04 Impeller and fluid machinery

Publications (3)

Publication Number Publication Date
JP2013199870A JP2013199870A (en) 2013-10-03
JP2013199870A5 true JP2013199870A5 (en) 2014-03-27
JP5882804B2 JP5882804B2 (en) 2016-03-09

Family

ID=49520296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012068413A Expired - Fee Related JP5882804B2 (en) 2012-03-23 2012-03-23 Impeller and fluid machinery

Country Status (1)

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JP (1) JP5882804B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014199498A1 (en) 2013-06-13 2014-12-18 三菱重工業株式会社 Impeller and fluid machine
ITFI20130261A1 (en) * 2013-10-28 2015-04-29 Nuovo Pignone Srl "CENTRIFUGAL COMPRESSOR IMPELLER WITH BLADES HAVING AN S-SHAPED TRAILING EDGE"
JP2016050486A (en) * 2014-08-29 2016-04-11 株式会社日立製作所 Fluid machinery and impeller of fluid machinery
JP6053882B2 (en) * 2015-07-28 2016-12-27 三菱重工業株式会社 Impeller and fluid machinery
CN108895031A (en) * 2018-08-17 2018-11-27 杭州老板电器股份有限公司 Supercharging device, blower and kitchen ventilator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1122695A (en) * 1997-06-30 1999-01-26 Ishikawajima Harima Heavy Ind Co Ltd Impeller blade structure of centrifugal compressor
JP2009133267A (en) * 2007-11-30 2009-06-18 Mitsubishi Heavy Ind Ltd Impeller of compressor
WO2009128299A1 (en) * 2008-04-18 2009-10-22 三菱電機株式会社 Turbofan and air conditioner

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