GB1522032A - Discs for fan impellers - Google Patents

Discs for fan impellers

Info

Publication number
GB1522032A
GB1522032A GB35753/75A GB3575375A GB1522032A GB 1522032 A GB1522032 A GB 1522032A GB 35753/75 A GB35753/75 A GB 35753/75A GB 3575375 A GB3575375 A GB 3575375A GB 1522032 A GB1522032 A GB 1522032A
Authority
GB
United Kingdom
Prior art keywords
opening
edge
recess
mouth
projection
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.)
Expired
Application number
GB35753/75A
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US05/502,097 external-priority patent/US3970411A/en
Application filed by Individual filed Critical Individual
Publication of GB1522032A publication Critical patent/GB1522032A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/78—Making other particular articles propeller blades; turbine blades
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type

Landscapes

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

Abstract

1522032 Transverse-flow fans K O L WALLMAN 29 Aug 1975 [30 Aug 1974] 35753/75 Addition to 1431680 Heading F1C [Also in Division B3] In a fan impeller disc according to claim 1 of the Parent Specification, a recess 14, Fig. 1, is formed near the mouth 4 of each opening 3 and at the side of the opening opposite the projection 10, the width of the opening in this region being greater than the widths of the mouth and of the inner portion of the opening which is adapted to receive the blade 8, so that when the projection is deformed, material included in the projection will be displaced into the recess past the outer edge 24 of the blade. The recess 14 comprises an edge 15 extending obliquely from the periphery 2 of the sheet-metal impeller disc 1 so as to face inwardly towards the edge 12 of the opening 3 and away from the mouth 4, and an edge 16 which faces outwardly towards the mouth and is joined to the other edge 19 of the opening by a curved edge 18 against which a correspondingly curved face of the blade abuts. When the projection 10 is deformed to form an insert 25 substantially filling the recess 14, its corner 13 meets the corner 17 of the recess. The deformation is effected by one or more rollers 22 which are adjusted radially inwardly while the impeller assembly is rotated. After deforming the projections 10 into the recesses 14, the rollers 22 act on the entire periphery of the impeller disc to compress it. The rollers 22 have a U-shaped profile so that a circumferential reinforcing bead 26 is formed. The sharp corners 13, 17 may be replaced by curved ones as shown in Fig. 2.
GB35753/75A 1974-08-30 1975-08-29 Discs for fan impellers Expired GB1522032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/502,097 US3970411A (en) 1973-04-02 1974-08-30 Impellers for cross-flow fans

Publications (1)

Publication Number Publication Date
GB1522032A true GB1522032A (en) 1978-08-23

Family

ID=23996323

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35753/75A Expired GB1522032A (en) 1974-08-30 1975-08-29 Discs for fan impellers

Country Status (5)

Country Link
JP (1) JPS5176610A (en)
DE (1) DE2537834C3 (en)
FR (1) FR2283339A2 (en)
GB (1) GB1522032A (en)
SE (1) SE405153B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6773233B2 (en) 2000-06-17 2004-08-10 Zf Friedrichshafen Ag Fitting of blades in hydrodynamic machines

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150997U (en) * 1984-01-09 1984-10-09 赤石金属工業株式会社 cylindrical multi-blade fan
JPS60185097U (en) * 1985-04-01 1985-12-07 赤石金属工業株式会社 cylindrical multi-blade fan
DE19913259C1 (en) * 1999-03-24 2000-05-25 Ltg Lufttechnische Komponenten Method of making ventilator blower wheel involves sliding blades into openings in support plates and expanding them to clamp them in place

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6773233B2 (en) 2000-06-17 2004-08-10 Zf Friedrichshafen Ag Fitting of blades in hydrodynamic machines

Also Published As

Publication number Publication date
SE405153B (en) 1978-11-20
FR2283339A2 (en) 1976-03-26
DE2537834B2 (en) 1979-11-08
JPS5176610A (en) 1976-07-02
FR2283339B2 (en) 1978-04-07
DE2537834C3 (en) 1980-07-24
SE7509543L (en) 1976-03-01
DE2537834A1 (en) 1976-07-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]