US1536306A - Radial impeller - Google Patents

Radial impeller Download PDF

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Publication number
US1536306A
US1536306A US690891A US69089124A US1536306A US 1536306 A US1536306 A US 1536306A US 690891 A US690891 A US 690891A US 69089124 A US69089124 A US 69089124A US 1536306 A US1536306 A US 1536306A
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United States
Prior art keywords
hub
impeller
blade
blades
extending
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 - Lifetime
Application number
US690891A
Inventor
Melach J Nusim
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Priority to US690891A priority Critical patent/US1536306A/en
Application granted granted Critical
Publication of US1536306A publication Critical patent/US1536306A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/26—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

Definitions

  • the object of the invention is to attach blades to an impeller hub securely and to shape the blades in such a manner that they are reinforced by those portions which are used for the purpose of attachment.
  • Figure 1 is a side elevation of the impeller of a blower in which are mounted several blades constructed and attached to the impeller hub in accordance with the practice of the invention, portions being broken away.
  • Figure 2 is a cross sectional view of the runner and the stationary shrouds of the associated blower casing, the section being taken along the lines 2-2 of Figure 1. look ing in the direction of the arrows.
  • Figure 3 is a top view of the hub showing several impeller blades attached thereto;
  • Figure 4 is a cross section of one of the impeller blades taken along the line H of Figure 2 looking in the direction of the arrows.
  • the impeller includes a hub A having a central flange 13 ex tending radially from the body of the hub perpendicular to the axis of the hub.
  • a hub A having a central flange 13 ex tending radially from the body of the hub perpendicular to the axis of the hub.
  • Upon the hub A are mounted a plurality of radially extending impeller blades each having a relatively flat portion C extending beyond the central flange B and terminating toward the hub in wings D, which curve forwardly f the flat portion G.
  • the wings D provide a means to intrain the fluid which is to be comp e e nd t direct it inwardly to be acted 6, 1924. serial No. 690,891.
  • Each blade extends laterally on both sides of the central flange B of the hub and is cut away as at E to permit the blade to be placed onto the hub over the flange B.
  • the blade is preferably formed from sheet steel pressed to the desired form.
  • On the face of each blade a groove F is pressed extending substantially from the tip of the blade to the inner edge of the blade.
  • the rear wall of this groove is punched out for the length of the blade from the inner edge to the outer edge of the central flange B of the hub leavmg two attaching flanges G extending rearwardly of the blades by which the latter may be attached to the central flange B of the hub by rivets H extending through the attaching flanges G and the flange B.
  • the pressed out metal forms a rib G reinforcing and stiffening the blade against bending.
  • the flanges J are provided on the rearward side of the blades adjacent the main body or base of the hub A. Recesses K inside the hub accommodate suitable bolts or rivets L.
  • the rib G formed as'above described reinforces impeller blade against bending and makes the structure rigid.
  • the hub A with the impeller blades at tached thereto is adapted to be mounted on a shaft 0 for rotation between suitable stationary shrouds P between which the fluid forced by the impeller is discharged into the diffuser R in the casing of the blower.
  • a runner for a centrifugal blower including a hub havin a base and a central flan e extending radially therefrom and a doubde flow impeller blade formed integrally and extending on opposite sides of thefiange of the hub and having a rib pressed out on its back face beyond the hub flange to reinforce the blade. said rib terminating in flanges for attachment to the hub.

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

Description

May 5, 1925. 1,536,306
Y M. J. NUSIM RADIAL IMPELLER Filed Feb. 6. 1924 V NTOR a why/airman I Hi5 ATTORNY Patented May 5, 1925.
UNITED STATES PATENT OFFICE.
MELAGH J'. NUSIM, 0F EASTON, EENNSYLVANIA. ASSIGNOR T0 INGERSOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.
RADIAL IMPELLEB.
Application filed February To all whom it may concern:
Be it known that I, Marleen J. Noemi, a
citizen of the United States, and a resident ticularly to the impelling blades forming a part of said impellers.
The object of the invention is to attach blades to an impeller hub securely and to shape the blades in such a manner that they are reinforced by those portions which are used for the purpose of attachment.
The invention will be more clearly understood by reference to the following description taken in connection with the drawing showing an embodiment which the invention may assume in practice.
Figure 1 is a side elevation of the impeller of a blower in which are mounted several blades constructed and attached to the impeller hub in accordance with the practice of the invention, portions being broken away.
Figure 2 is a cross sectional view of the runner and the stationary shrouds of the associated blower casing, the section being taken along the lines 2-2 of Figure 1. look ing in the direction of the arrows.
Figure 3 is a top view of the hub showing several impeller blades attached thereto; and
Figure 4 is a cross section of one of the impeller blades taken along the line H of Figure 2 looking in the direction of the arrows.
Referring to the drawings the impeller includes a hub A having a central flange 13 ex tending radially from the body of the hub perpendicular to the axis of the hub. Upon the hub A are mounted a plurality of radially extending impeller blades each having a relatively flat portion C extending beyond the central flange B and terminating toward the hub in wings D, which curve forwardly f the flat portion G. The wings D provide a means to intrain the fluid which is to be comp e e nd t direct it inwardly to be acted 6, 1924. serial No. 690,891.
upon by the larger radially extending p0rtion C. I
Each blade extends laterally on both sides of the central flange B of the hub and is cut away as at E to permit the blade to be placed onto the hub over the flange B. The blade is preferably formed from sheet steel pressed to the desired form. On the face of each blade a groove F is pressed extending substantially from the tip of the blade to the inner edge of the blade. The rear wall of this groove is punched out for the length of the blade from the inner edge to the outer edge of the central flange B of the hub leavmg two attaching flanges G extending rearwardly of the blades by which the latter may be attached to the central flange B of the hub by rivets H extending through the attaching flanges G and the flange B. Beyond the flange B the pressed out metal forms a rib G reinforcing and stiffening the blade against bending.
In order to provide additional support for the blade against bending along a radial line the flanges J are provided on the rearward side of the blades adjacent the main body or base of the hub A. Recesses K inside the hub accommodate suitable bolts or rivets L. The rib G formed as'above described reinforces impeller blade against bending and makes the structure rigid.
The hub A with the impeller blades at tached thereto is adapted to be mounted on a shaft 0 for rotation between suitable stationary shrouds P between which the fluid forced by the impeller is discharged into the diffuser R in the casing of the blower.
I claim:
A runner for a centrifugal blower including a hub havin a base and a central flan e extending radially therefrom and a doubde flow impeller blade formed integrally and extending on opposite sides of thefiange of the hub and having a rib pressed out on its back face beyond the hub flange to reinforce the blade. said rib terminating in flanges for attachment to the hub.
In testimony whereof I have signed this specification.
MELAOH J. NUSIM.
US690891A 1924-02-06 1924-02-06 Radial impeller Expired - Lifetime US1536306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US690891A US1536306A (en) 1924-02-06 1924-02-06 Radial impeller

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US690891A US1536306A (en) 1924-02-06 1924-02-06 Radial impeller

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US1536306A true US1536306A (en) 1925-05-05

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457325A (en) * 1943-05-15 1948-12-28 American Machine & Metals Axial flow fan
US2581872A (en) * 1946-11-21 1952-01-08 Torrington Mfg Co Propeller fan blade retaining construction
US3123284A (en) * 1964-03-03 greenawalt
US3246834A (en) * 1963-12-18 1966-04-19 Space Conditioning Inc Blower housing
US20030063976A1 (en) * 2001-09-28 2003-04-03 Sunonwealth Electric Machine Industry Co., Ltd. Impeller structure
US20090028710A1 (en) * 2007-07-26 2009-01-29 Sunonwealth Electric Machine Industry Co., Ltd. Fan blade

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123284A (en) * 1964-03-03 greenawalt
US2457325A (en) * 1943-05-15 1948-12-28 American Machine & Metals Axial flow fan
US2581872A (en) * 1946-11-21 1952-01-08 Torrington Mfg Co Propeller fan blade retaining construction
US3246834A (en) * 1963-12-18 1966-04-19 Space Conditioning Inc Blower housing
US20030063976A1 (en) * 2001-09-28 2003-04-03 Sunonwealth Electric Machine Industry Co., Ltd. Impeller structure
US6568907B2 (en) * 2001-09-28 2003-05-27 Sunonwealth Electric Machine Industry Co., Ltd. Impeller structure
US20090028710A1 (en) * 2007-07-26 2009-01-29 Sunonwealth Electric Machine Industry Co., Ltd. Fan blade

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