WO2016167456A1 - Carter de volute et machine tournante le comportant - Google Patents

Carter de volute et machine tournante le comportant Download PDF

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Publication number
WO2016167456A1
WO2016167456A1 PCT/KR2016/000904 KR2016000904W WO2016167456A1 WO 2016167456 A1 WO2016167456 A1 WO 2016167456A1 KR 2016000904 W KR2016000904 W KR 2016000904W WO 2016167456 A1 WO2016167456 A1 WO 2016167456A1
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WO
WIPO (PCT)
Prior art keywords
volute
fluid
diffuser
curved surface
guide vanes
Prior art date
Application number
PCT/KR2016/000904
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English (en)
Korean (ko)
Inventor
김승민
노진현
김지수
Original Assignee
한화테크윈 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한화테크윈 주식회사 filed Critical 한화테크윈 주식회사
Publication of WO2016167456A1 publication Critical patent/WO2016167456A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers

Definitions

  • the present invention relates to an apparatus, and more particularly to a volute casing and a rotating machine having the same.
  • a compressor, a pump, a blower, etc. for compressing a fluid or the like generally have a structure of a rotating machine having a rotating body therein.
  • the impeller is a rotating body configured to transfer rotational kinetic energy to the fluid to increase the pressure of the fluid.
  • the impeller has a plurality of blades for assisting the movement of the fluid and transferring the energy to the fluid.
  • Patent Publication No. 1996-0001494 discloses a technique for improving the performance of a compressor by reducing the pressure loss of the vane compressor.
  • Embodiments of the present invention provide a volute casing that minimizes energy loss and a rotating machine having the same.
  • a volute casing of a rotary machine including a diffuser portion and a volute portion into which fluid from the diffuser portion enters, wherein the inner wall of the volute portion has a radial direction from the diffuser portion;
  • a volute casing provided with a plurality of guide vanes for converting fluid flow in a tangential direction.
  • Embodiments of the present invention can minimize the loss of energy by converting the moving direction of the fluid from the radial direction to the tangential direction.
  • the size of the guide vane may be disposed to correspond to the flow rate of the fluid to be changed to minimize the flow loss and improve the efficiency.
  • the scope of the present invention is not limited by these effects.
  • FIG. 1 is a perspective view showing a volute casing according to an embodiment of the present invention.
  • FIG. 2 is a perspective view taken along line II-II of FIG. 1.
  • FIG. 3 is a perspective view taken along line III-III of FIG. 1.
  • FIG. 4 is a cross-sectional view taken along line III-III of FIG. 1.
  • FIG. 5 is a cross-sectional view showing a rotating machine including a volute casing taken along the line II-II of FIG.
  • a volute casing of a rotary machine including a diffuser portion and a volute portion into which fluid from the diffuser portion enters, wherein the inner wall of the volute portion has a radial direction from the diffuser portion;
  • a volute casing provided with a plurality of guide vanes for converting fluid flow in a tangential direction.
  • the plurality of guide vanes may be arranged to increase in size in a first direction, the direction in which the fluid passes through the volute portion.
  • any one of the plurality of guide vanes may be installed to increase the size of the cross-sectional area in the first direction.
  • Another aspect of the present invention includes an impeller having a blade, a diffuser portion for increasing the pressure of the fluid passing through the impeller, and a volute portion for entering and discharging the fluid from the diffuser portion to the discharge portion, wherein the ball
  • the lute portion provides a centrifugal compressor having guide vanes for converting a radial flow of the fluid from the diffuser portion in a tangential direction.
  • the plurality of guide vanes may be installed on the inner wall of the volute part, and the plurality of guide vanes may be arranged to increase in size in a first direction, the direction in which the fluid passes through the volute part.
  • any one of the plurality of guide vanes may be installed to increase the size of the cross-sectional area in the first direction.
  • volute portion may increase in size in the first direction.
  • the guide vane may have a first curved surface for guiding movement of the fluid, a second curved surface formed to correspond to the first curved surface, and an end portion formed by the first curved surface and the second curved surface meeting each other. It may be provided.
  • the fluid flowing into the volute portion may move to the discharge portion along the first curved surface or the second curved surface.
  • first curved surface or the second curved surface may be formed concave.
  • the end portion may be disposed to face the impeller.
  • the guide vane may be formed in the shape of a triangular pyramid with at least a portion curved.
  • FIG. 1 is a perspective view illustrating a volute casing 30 according to an embodiment of the present invention
  • FIG. 2 is a perspective view taken along line II-II of FIG. 1
  • FIG. 3 is taken along line III-III of FIG. 1.
  • It is a perspective view taken. 4 is a cross-sectional view taken along line III-III of FIG. 1.
  • FIG. 5 is a cross sectional view of a rotating machine 100 including a volute casing 30 taken along line II-II of FIG. 1.
  • the rotary machine 100 is a centrifugal compressor that compresses a fluid, and may include an impeller 10, a diffuser unit 20, and a volute unit 31.
  • the rotary machine according to an embodiment of the present invention is a centrifugal compressor, but the present invention is not limited thereto. That is, the rotary machine according to an embodiment of the present invention corresponds to a device capable of changing the pressure and speed of the fluid by the rotational movement of the rotating body.
  • the rotary machine according to the present invention may be a pump, a blower or the like.
  • the fluid compressed by the rotary machine 100 may be various fluids such as air, gas, water vapor, liquid, and the like.
  • the impeller 10 includes a hub 11 and a blade 12 installed on the hub 11, which is fixed to a rotating shaft (not shown) so that the impeller 10 also rotates when the rotating shaft rotates. do.
  • a plurality of blades 12 are installed in the hub 11, and the blades 12 may transmit rotational kinetic energy of the impeller 10 to the fluid while serving to guide the movement of the fluid.
  • the configuration of the impeller 10 can be used the well-known / conventional impeller 10 technology used in a general centrifugal compressor, the detailed structure and arrangement thereof will be omitted here.
  • the diffuser unit 20 may be provided with a diffuser vane 22 serving as a passage through which the fluid moves and a back plate 21 on which the diffuser vanes 22 are installed.
  • the fluid passing through the diffuser portion 20 may increase in pressure.
  • a diffuser vane 22 may be installed on one surface of the back plate 21.
  • a flow path through which the compressed fluid passes between the diffuser vanes 22 installed on one surface of the back plate 21 may be formed.
  • the back plate 21 may be fixed to the plate 34 of the volute casing 30.
  • the diffuser vanes 22 may be provided in plural numbers depending on the flow rate and speed flowing from the impeller 10.
  • the diffuser vanes 22 may be disposed along the outer circumferential surface of the impeller 10.
  • the diffuser vanes 22 may form an angle in order for the fluid flowing out of the diffuser 20 to form a set pressure.
  • the diffuser vanes 22 may change the position or angle at which the diffuser vanes 22 engage with the back plate 21 in order to change the pressure of the fluid flowing out of the diffuser portion 20.
  • the diffuser vanes 22 will be described in detail with reference to a case where the diffuser vanes 22 are fixedly coupled to the back plate 21 for convenience of description.
  • the diffuser vanes 22 may be integrally formed with the back plate 21 and manufactured.
  • the diffuser unit 20 may be formed by combining.
  • the back plate 220 and the diffuser vane 22 may form the diffuser 20 through a welding or shrink fit process.
  • the volute casing 30 may discharge the high pressure fluid that has passed through the diffuser portion 20 to the discharge portion 32.
  • the volute casing 30 has an opening in which a volute part 31 formed outside the diffuser part 20, a discharge part 32 through which the fluid passing through the volute part 31 is discharged, and an impeller 10 are inserted. 33, a plate 34 on which the diffuser portion 20 is installed, and a guide vane 35 provided on the volute portion 31 may be provided.
  • the volute portion 31 is installed outside the diffuser portion 20 and flows through the diffuser vane 22.
  • the fluid moves through the internal space of the volute part 31 toward the discharge part 32.
  • the direction in which the fluid moves toward the discharge portion 32 is defined as the first direction.
  • the volute portion 31 may be formed to increase in size in the first direction. Since the fluid discharged from the diffuser portion 20 merges in the volute portion 31, the size of the volute portion 31 may be gradually increased in the first direction.
  • the opening 33 is formed to extend to one side from the volute portion 31, the impeller 10 may be inserted.
  • the opening 33 is formed to extend above the volute portion 31 to install the impeller 10.
  • the plate 34 is provided to face the opening 33.
  • the plate 34 may be connected to the volute part 31 and may fix the diffuser part 20.
  • the guide vane 35 may change the flow direction of the fluid passing through the volute portion 31.
  • the guide vanes 35 may be installed on the inner wall of the volute part 31 and may contact the fluid passing through the volute part 31.
  • the guide vane 35 may be formed in the shape of a triangular pyramid at least partially curved.
  • the guide vanes 35 may be provided in plural and may be radially installed on the inner wall of the volute unit 31.
  • the plurality of guide vanes 35 may be installed to increase in size in the first direction.
  • the first guide vanes 35a, the second guide vanes 35b, and the third guide vanes 35c disposed to be adjacent among the plurality of guide vanes 35 may include a first guide vane 35c. It can be formed to increase in size along the direction. The size of the first guide vane 35a may be smaller than that of the second guide vane 35b, and the size of the second guide vane 35b may be smaller than the size of the third guide vane 35c.
  • the plurality of guide vanes 35 are installed to increase the size in the first direction.
  • the flow rate per unit area passing through the volute portion 31 increases. Due to the increased flow rate per unit area, disturbance may occur in the volute portion 31 due to the force in the tangential direction F2 and the flow in the radial direction F1.
  • the guide vanes 35 may be arranged to increase the size of the guide vanes 35 adjacent to the discharge part 32 in order to change the moving direction of the fluid in response to the increased flow rate per unit area.
  • one of the plurality of guide vanes 35 may increase in size in a first direction.
  • One of the guide vanes 35 may be installed to increase the size of the cross-sectional area in the first direction, which is the moving direction of the fluid.
  • the fluid passing through the volute portion 31 may contact the surface of the guide vanes 35 while moving in the first direction, and may move to another neighboring guide vane.
  • the flow direction of the fluid can be changed from the radial direction F1 to the tangential direction F2.
  • the guide vanes 35 may be formed to be at least partially curved.
  • the guide vane 35 includes a first curved surface 36 for guiding fluid movement, a second curved surface 37, a first curved surface 36, and a second curved surface corresponding to the first curved surface 36.
  • the face 37 may be provided with an end portion 38 formed to meet.
  • the first curved surface 36 or the second curved surface 37 may be formed concave.
  • the fluid discharged from the diffuser 20 may move along the first curved surface 36 or the second curved surface 37. Since the fluid moves along the concave formed surface, it is possible to predict and control the movement of the fluid.
  • the guide vanes 35 are formed to be curved so that the flow in the radial direction F1 can be easily changed in the tangential direction F2.
  • the end 38 may be disposed to face the impeller 10. 4, the end 38 is installed to face the opening 33 in which the impeller 10 is installed.
  • the fluid passing through the diffuser portion 20 moves in the radial direction F1.
  • the end 38 is disposed to face upwards, it is possible to guide the flow of the fluid tangentially.
  • the fluid passing through the diffuser vanes 22 is in contact with the first curved surface 36 or the second curved surface 37.
  • the first curved surface 36 or the second curved surface 37 has a predetermined inclination angle.
  • the fluid passing through the diffuser 20 may be in contact with the inclination angle to effectively guide the fluid in the tangential direction F2.
  • the guide vane 35 may convert the flow of the fluid in the radial direction F1 exiting the diffuser portion 20 from the inner wall of the volute portion 31 to the tangential direction F2.
  • the fluid passing through the volute portion 31 can move along the trajectory of F3 while minimizing energy loss in the radial direction F1.
  • the velocity of the fluid passing through the diffuser portion 20 has a radial direction F1 and a tangential direction F2.
  • the flow in the radial direction F1 collides with the volute portion 31 or is combined with the flow in the tangential direction F2 and discharged to the discharge portion 32. At this time, the fluid may be disturbed or friction occurs in the volute part 31, resulting in energy loss.
  • the fluid passing through the diffuser portion 20 comes into contact with the first curved surface 36 or the second curved surface 37.
  • the fluid moving in the tangential direction F2 is discharged to the discharge part 32 while passing through the guide vane 35, but the fluid moving in the radial direction F1 moves along the concave surface, so that the fluid moving in the tangential direction F2 Direction can be switched to. That is, the fluid can move like F3 by switching the flow in the radial direction F1 to the tangential direction F2 without loss (see FIG. 5).
  • the guide vanes 35 are arranged to increase in size in the first direction in response to the increase in flow rate. That is, the size of the guide vanes 35 may be increased in the first direction to minimize disturbance occurring between the flow in the tangential direction F2 and the flow in the radial direction F1.
  • the fluid passing through the impeller 10 may enter the volute unit 31 by passing through the diffuser unit 20.
  • the size of the impeller 10 is determined by the purpose of use and the pressure used, and the size of the volute part 31 is determined by the flow rate.
  • the diffuser unit 20 serves to convert the voltage into a positive pressure while guiding the flow drawn from the impeller 10 to the volute unit 31.
  • the size of the diffuser portion 20 may be set according to the flow rate flowing into the volute portion 31 through the diffuser portion 20.
  • the conventional rotary machine 100 should apply a diffuser portion 20 of a predetermined size or more, in this case, the size of the rotary machine is increased to increase the cost and space utilization is reduced.
  • the guide vanes 35 may direct the flow of the fluid in the radial direction F1 to the flow in the tangential direction F2.
  • the guide vanes 35 may increase the efficiency of the rotary machine 100 by inducing flow in the tangential direction F2 while minimizing energy loss.
  • volute casing 30 and the rotating machine 100 having the same convert the fluid flowing from the diffuser portion 20 from the radial direction F1 to the tangential direction F2, thereby minimizing the loss of energy.
  • the volute casing 30 and the rotating machine 100 having the same may be arranged to increase the size of the guide vane 35 so as to correspond to the flow rate of the fluid passing through the volute portion 31 to minimize the flow loss. have.
  • volute casing 30 and the rotating machine 100 having the same minimize the generation of vortices occurring in the volute part 31, thereby improving efficiency.
  • the present invention it is possible to reduce the flow loss of the centrifugal compressor by providing a volute casing provided with a guide vane, and the embodiment of the present invention for all power generation systems, gas turbine systems, etc. having a rotating machine for industrial use You can apply them.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Un aspect de la présente invention concerne un carter de volute pour une machine tournante et une machine tournante le comportant, lequel carter de volute comprend : une partie diffuseur; et une partie volute dans laquelle un fluide sortant de la partie diffuseur est introduit, une pluralité d'aubes de guidage pour convertir l'écoulement radial du fluide à partir de la partie diffuseur en l'écoulement tangentiel de celui-ci étant installées sur la paroi interne de la partie volute.
PCT/KR2016/000904 2015-04-14 2016-01-28 Carter de volute et machine tournante le comportant WO2016167456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150052450A KR102247594B1 (ko) 2015-04-14 2015-04-14 볼류트 케이싱 및 이를 구비한 회전 기계
KR10-2015-0052450 2015-04-14

Publications (1)

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WO2016167456A1 true WO2016167456A1 (fr) 2016-10-20

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WO (1) WO2016167456A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253542A (zh) * 2020-09-25 2021-01-22 宁波方太厨具有限公司 蜗壳、应用有该蜗壳的离心风机、吸油烟机及其控制方法
WO2022032875A1 (fr) * 2020-08-10 2022-02-17 佛山市顺德区美的洗涤电器制造有限公司 Anneau de guidage d'air, ventilateur centrifuge et hotte de cuisine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102261509B1 (ko) 2019-11-28 2021-06-07 주식회사 인지니어스 고온 기체용 밀폐형 송풍기
KR20220065334A (ko) 2020-11-13 2022-05-20 엘지전자 주식회사 압축기 및 이를 갖는 터보 냉동기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3060079B2 (ja) * 1992-01-14 2000-07-04 株式会社日立製作所 ディフューザポンプ及び地下排水ポンプ機場
JP4655603B2 (ja) * 2004-12-01 2011-03-23 株式会社豊田自動織機 遠心圧縮機
JP2012007548A (ja) * 2010-06-25 2012-01-12 Sanyo Denki Co Ltd 遠心ファン
WO2014099329A1 (fr) * 2012-12-20 2014-06-26 Borgwarner Inc. Logement de turbine doté d'aubes de division dans une volute
JP2014194189A (ja) * 2013-03-29 2014-10-09 Panasonic Corp ポンプ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970009956B1 (en) 1994-06-14 1997-06-19 Yong Hwa Ind Co Vane compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3060079B2 (ja) * 1992-01-14 2000-07-04 株式会社日立製作所 ディフューザポンプ及び地下排水ポンプ機場
JP4655603B2 (ja) * 2004-12-01 2011-03-23 株式会社豊田自動織機 遠心圧縮機
JP2012007548A (ja) * 2010-06-25 2012-01-12 Sanyo Denki Co Ltd 遠心ファン
WO2014099329A1 (fr) * 2012-12-20 2014-06-26 Borgwarner Inc. Logement de turbine doté d'aubes de division dans une volute
JP2014194189A (ja) * 2013-03-29 2014-10-09 Panasonic Corp ポンプ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022032875A1 (fr) * 2020-08-10 2022-02-17 佛山市顺德区美的洗涤电器制造有限公司 Anneau de guidage d'air, ventilateur centrifuge et hotte de cuisine
CN112253542A (zh) * 2020-09-25 2021-01-22 宁波方太厨具有限公司 蜗壳、应用有该蜗壳的离心风机、吸油烟机及其控制方法
CN112253542B (zh) * 2020-09-25 2022-03-18 宁波方太厨具有限公司 一种吸油烟机的控制方法

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KR102247594B1 (ko) 2021-05-03
KR20160122495A (ko) 2016-10-24

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