JPS5176610A - Sofukinohaneguruma oyobi hanegurumanoenban narabini hanegurumanoseizohoho - Google Patents
Sofukinohaneguruma oyobi hanegurumanoenban narabini hanegurumanoseizohohoInfo
- Publication number
- JPS5176610A JPS5176610A JP50104827A JP10482775A JPS5176610A JP S5176610 A JPS5176610 A JP S5176610A JP 50104827 A JP50104827 A JP 50104827A JP 10482775 A JP10482775 A JP 10482775A JP S5176610 A JPS5176610 A JP S5176610A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
- 239000011324 bead Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
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.
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 |
---|---|
JPS5176610A true JPS5176610A (en) | 1976-07-02 |
Family
ID=23996323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50104827A Pending JPS5176610A (en) | 1974-08-30 | 1975-08-29 | Sofukinohaneguruma oyobi hanegurumanoenban narabini hanegurumanoseizohoho |
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 (2)
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 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE10030029A1 (en) | 2000-06-17 | 2001-12-20 | Zahnradfabrik Friedrichshafen | Method to manufacture components for hydrodynamic machine; involves positively connecting blades to base body by continuously rotating pressing roller and continuous pressure on base body |
-
1975
- 1975-08-26 DE DE2537834A patent/DE2537834C3/en not_active Expired
- 1975-08-28 SE SE7509543A patent/SE405153B/en not_active IP Right Cessation
- 1975-08-29 JP JP50104827A patent/JPS5176610A/en active Pending
- 1975-08-29 GB GB35753/75A patent/GB1522032A/en not_active Expired
- 1975-08-29 FR FR7526674A patent/FR2283339A2/en active Granted
Cited By (3)
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 |
JPS626315Y2 (en) * | 1985-04-01 | 1987-02-13 |
Also Published As
Publication number | Publication date |
---|---|
SE405153B (en) | 1978-11-20 |
FR2283339A2 (en) | 1976-03-26 |
DE2537834B2 (en) | 1979-11-08 |
FR2283339B2 (en) | 1978-04-07 |
DE2537834C3 (en) | 1980-07-24 |
SE7509543L (en) | 1976-03-01 |
DE2537834A1 (en) | 1976-07-22 |
GB1522032A (en) | 1978-08-23 |
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