EP2372162A2 - Pumpenlaufrad - Google Patents

Pumpenlaufrad Download PDF

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Publication number
EP2372162A2
EP2372162A2 EP11159937A EP11159937A EP2372162A2 EP 2372162 A2 EP2372162 A2 EP 2372162A2 EP 11159937 A EP11159937 A EP 11159937A EP 11159937 A EP11159937 A EP 11159937A EP 2372162 A2 EP2372162 A2 EP 2372162A2
Authority
EP
European Patent Office
Prior art keywords
impeller
partition
protrusions
base wall
impeller body
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP11159937A
Other languages
English (en)
French (fr)
Other versions
EP2372162A3 (de
Inventor
Yung-Sho Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yu Shen Machinery Co Ltd
Original Assignee
Yu Shen Machinery Co Ltd
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 Yu Shen Machinery Co Ltd filed Critical Yu Shen Machinery Co Ltd
Publication of EP2372162A2 publication Critical patent/EP2372162A2/de
Publication of EP2372162A3 publication Critical patent/EP2372162A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/2255—Special flow patterns flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect

Definitions

  • the present invention relates to a pump impeller, especially to a pump impeller for a centrifugal pump.
  • a general centrifugal pump 90 has a housing 92, a conventional impeller 91 mounted in the housing 92, a motor 93 and a driving shaft 94.
  • the driving shaft 94 protrudes from the motor 93, and is connected to and drives the conventional impeller 91.
  • the conventional impeller 91 has a central channel 911, multiple vanes 913 and multiple outlet channels 912.
  • the central channel 911 is axially formed in the conventional impeller 91.
  • the vanes 913 are separately formed in and arranged around the conventional impeller 91.
  • Each vane 913 has a uniform thickness.
  • Each outlet channel 912 is defined between two adjacent vanes 913, is radially disposed in the conventional impeller 91, communicates with the central channel 911 and an outside of the conventional impeller 91 and has a cross-sectional area.
  • each outlet channel 912 increases from the center to the periphery of the conventional impeller 91.
  • the pump 90 operates and drives the conventional impeller 91, liquid is drawn from the central channel 911 and flows outwards through the outlet channels 912 by a centrifugal force. The closer the liquid approaches the periphery of the impeller 91, the faster the liquid flows.
  • the value of a cross-sectional area of the tube multiplied by a velocity of the fluid is a constant value.
  • the cross-sectional area of the outlet channel 912 is supposed to be getting smaller.
  • the cross-sectional area of the outlet channel 912 of the conventional impeller 91 is increased. Therefore, the liquid does not flow uniformly in the outlet channel 912 and even becomes turbulent and the pump 90 with the conventional impeller 91 is inefficient.
  • the main objective of the present invention is to provide a pump impeller.
  • the pump impeller has two impeller bodies attached to each other and multiple outlet channels.
  • Each impeller body has an annular base wall and multiple partition protrusions separately formed on an inner surface of the base wall.
  • the outlet channels are respectively defined between the partition protrusions.
  • Each outlet channel has a cross-sectional area decreasing from an inner end to an outer open end of the outlet channel.
  • a pump impeller in accordance with the present invention comprises a first impeller body 10, 10A, a second impeller body 20, 20A, multiple outlet channels 30, 30A, a collar 40 and multiple bolts 60.
  • the first impeller body 10, 10A has a first base wall 11, 11A, multiple first partition protrusions 12, 12A, multiple chamfers 13, 13A and a flange 14.
  • the first base wall 11, 11A is annular and has an inflow hole 111, 111A formed through a center of the first base wall 11, 11A.
  • the first partition protrusions 12, 12A are separately formed on and arranged around an inner surface of the first base wall 11, 11A.
  • Each first partition protrusion 12, 12A is curved and has two opposite side surfaces and a width. The width of the first partition protrusion 12, 12A increases from an inner end to an outer end of the first partition protrusion 12, 12A.
  • the chamfers 13, 13A of the first impeller body 10, 10A are respectively formed between the side surfaces of the first partition protrusions 12, 12A and the inner surface of the first base wall 11, 11A of the first impeller body 10, 10A.
  • the flange 14 is formed on an outer surface of the first base wall 11, 11A and around the inflow hole 111, 111A of the first base wall 11, 11A.
  • the second impeller body 20, 20A is securely attached to the first impeller body 10, 10A and has a second base wall 21, 21A, multiple second partition protrusions 22, 22A and multiple chamfers 23, 23A.
  • the second base wall 21, 21A is separated from and parallel to the first base wall 11, 11A of the first impeller body 10, 10A and has an axial portion 211, 211A.
  • the axial portion 211, 211A is formed on a center of the second base wall 21, 21A and is connected to and is driven by a driving shaft of a motor.
  • the second partition protrusions 22, 22A are separately formed on and arranged around an inner surface of the second base wall 21, 21A.
  • Each second partition protrusion 22, 22A is curved and has two opposite side surfaces and a width.
  • the width of the second partition protrusion 12, 12A increases from an inner end to an outer end of the second partition protrusion 12, 12A.
  • the chamfers 23, 23A of the second impeller body 20, 20A are respectively formed between the side surfaces of the second partition protrusions 22, 22A and the inner surface of the second base wall 21, 21A of the second impeller body 20, 20A.
  • the outlet channels 30, 30A are respectively defined between the first partition protrusions 12, 12A and the second partition protrusions 22, 22A.
  • Each outlet channel 30, 30A has an outer open end 31, 31A and a cross-sectional area.
  • the cross-sectional area of the outlet channel 30, 30A decreases from an inner end to the outer open end 31, 31A of the outlet channel 30, 30A.
  • the collar 40 is mounted around the first impeller body 10, 10A and the second impeller body 20, 20A and has multiple outflow holes 41.
  • the outflow holes 41 are separately formed through the collar 40 and respectively correspond to the outer open ends 31, 31A of the outlet channels 30, 30A.
  • Each outflow hole 41 may be equal to or smaller than the outer open end 31, 31A of a corresponding outlet channel 30, 30A.
  • the bolts 60 are securely mounted through the first and second base walls 11, 11A, 21, 21A and the first and second partition protrusions 12, 12A, 22, 22A of the first and second impeller bodies 10, 20 to securely hold the first and second impeller bodies 10, 10A, 20, 20A together.
  • the pump impeller has, but not limited to, six bolts 60.
  • the second partition protrusions 22 of the second impeller body 20 respectively correspond to and stack against the first partition protrusions 12 of the first impeller body 10.
  • Each outlet channel 30 is defined between two adjacent first partition protrusions 12 and two second partition protrusions 22 that correspond to the two adjacent first partition protrusions 12.
  • each of the first impeller body 10 has, but not limited to, twelve first partition protrusions 12 and correspondingly, each of the second impeller body 20 has, but not limited to, twelve second partition protrusions 22.
  • twelve outlet channels 30 are defined in each of the first and second preferred embodiments of the pump impellers.
  • the pump impeller further comprises a partition panel 50.
  • the partition panel 50 is annular, is mounted between the first partition protrusions 12 of the first impeller body 10 and the second partition protrusions 22 of the second impeller body 20 and divides each of the outlet channels 30 into two sub-channels 32.
  • each second partition protrusion 22A is mounted between two adjacent first partition protrusions 12A.
  • Each outlet channel 30A is defined between one of the first partition protrusions 12A and one of the second partition protrusions 22A next to each other.
  • each of the first impeller body 10A has, but not limited to, six first partition protrusions 12A and correspondingly, each of the second impeller body 20A has, but not limited to, six second partition protrusions 22A.
  • twelve outlet channels 30A are defined in the third preferred embodiment of the pump impeller.
  • the number of the outlet channels 30A is double the number of the first or second partition protrusions 12A, 22A.
  • the third preferred embodiment of the pump impeller is more suitable for being made into a small-sized pump impeller than the first and second preferred embodiments of the pump impellers.
  • the pump impeller as described has the following advantages.
  • liquid is drawn from the inflow hole 111, 111A of the first impeller body 11, 11A and then flows outwards through the outlet channels 30, 30A by a centrifugal force.
  • a flow rate of the liquid is constrained by the outflow holes 41 of the collar 40. Since the cross-sectional area of each outlet channel 30, 30A decreases from the inner end to the outer end of the outlet channel 30, 30A, the liquid flows uniformly with increasing velocity and becomes a laminar flow. Thus, the liquid does not become turbulent, no cavitation will occur in the liquid, no vibration will occur on the pump and a working efficiency of the pump with the pump impeller is certainly improved.
  • the partition panel 50 that divides each of the outlet channels 30 into two sub-channels 32 ensures that the liquid flowing in the sub-channels 32 is remains laminar flow. Therefore, the pump impeller with the partition panel 50 is especially suitable for being made into the medium-sized or the large-sized pump impeller.
  • first base wall 11, 11A of the first impeller body 10, 10A and the second base wall 21, 21A of the second impeller body 20, 20A are disposed parallel to each other, distances between the first and second base walls 11, 11A, 21, 21A are equivalent. Consequently, resistance between the liquid and the pump impeller is low. Moreover, the chamfers 13, 13A, 23, 23A of the first and second impeller bodies 10, 10A, 20, 20A also reduce the resistance between the liquid and the pump impeller. Furthermore, when the first and second impeller bodies 10, 10A, 20, 20A are manufactured by a milling machine with a computer numerical control (CNC) system, sizes of the outlet channels 30, 30 are precise and inner surfaces of the pump impeller defined around the outlet channels 30, 30A are smooth. Thus, the resistance between the liquid and the pump impeller is further reduced.
  • CNC computer numerical control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP11159937A 2010-03-30 2011-03-28 Pumpenlaufrad Withdrawn EP2372162A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW99109553 2010-03-30

Publications (2)

Publication Number Publication Date
EP2372162A2 true EP2372162A2 (de) 2011-10-05
EP2372162A3 EP2372162A3 (de) 2012-10-31

Family

ID=44144682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11159937A Withdrawn EP2372162A3 (de) 2010-03-30 2011-03-28 Pumpenlaufrad

Country Status (4)

Country Link
US (1) US20110243732A1 (de)
EP (1) EP2372162A3 (de)
JP (1) JP3168366U (de)
TW (1) TW201139858A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103075363A (zh) * 2013-01-09 2013-05-01 西安航空学院 小流量高扬程新型旋涡泵

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3012458A1 (de) 2014-10-22 2016-04-27 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Mehrfachauslasspumpe
CN106089121B (zh) * 2016-06-16 2018-05-04 西南石油大学 一种利用钻井液上返能量抑制隔水管涡激振动装置及方法
USD979607S1 (en) * 2020-02-03 2023-02-28 W.S. Darley & Co. Impeller for a pump
USD940760S1 (en) * 2020-04-04 2022-01-11 Colina Mixing pump impeller
USD958842S1 (en) * 2020-04-04 2022-07-26 Colina Mixing pump impeller vane assembly
JP2023117972A (ja) 2022-02-14 2023-08-24 パナソニックＩｐマネジメント株式会社 ポンプ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US538050A (en) * 1895-04-23 Half to isaac l
US1919970A (en) * 1933-02-07 1933-07-25 Gen Electric Impeller
US2999628A (en) * 1957-08-26 1961-09-12 Joseph S Crombie Low pressure compressor
DE1453723A1 (de) * 1963-07-19 1969-07-31 Barske Ulrich Max Kreiselpumpe,insbesondere fuer kleine bis mittlere Foerderstroeme
US3285187A (en) * 1965-11-05 1966-11-15 Msl Ind Inc Impeller for use in centrifugal pump or blower and a method of manufacture thereof
US6210116B1 (en) * 1998-11-05 2001-04-03 John E. Kuczaj High efficiency pump impeller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103075363A (zh) * 2013-01-09 2013-05-01 西安航空学院 小流量高扬程新型旋涡泵

Also Published As

Publication number Publication date
US20110243732A1 (en) 2011-10-06
JP3168366U (ja) 2011-06-09
EP2372162A3 (de) 2012-10-31
TW201139858A (en) 2011-11-16

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