US279603A - Fan-wheel - Google Patents

Fan-wheel Download PDF

Info

Publication number
US279603A
US279603A US279603DA US279603A US 279603 A US279603 A US 279603A US 279603D A US279603D A US 279603DA US 279603 A US279603 A US 279603A
Authority
US
United States
Prior art keywords
wheel
fan
blades
rim
angle
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
Publication date
Application granted granted Critical
Publication of US279603A publication Critical patent/US279603A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/022—Multi-stage pumps with concentric rows of vanes

Definitions

  • My invention relates more particularly to .Certain improvements upon a fan-wheel for which Letters Patent No. 265, 984 were granted to me on ,the 17th day of October, 1882, and the object of my invention is to provide a fan- Wheel of simple and cheap construction and of great power, and adapted for exhausting and forcing atmospheric air, vapors, and gases from and into mines, Ventilating and cooling buildings, railway-cars, &c. I accomplish this object by the mechanism illustrated in the accompanying drawings, in Which- Figure lis a front elevation of my improved fan-wheel.
  • Fig. 2 is a face view of one of the Similar letters of reference are used to designate like parts throughout the several views.
  • the rim A is composed of a ilat sheet of metal bent into a truncated conical form, or of less diameter at its inner than at its outer edge.
  • the blades B, which radiate from the hub C, are set at an angle to the plane of revo- -lution, and are formed, preferably, of smooth sheet metal.
  • an interior band or rim, D likewise composed of flat or smooth sheet metal bent into the form of a truncated cone, whose apex or point of generation is the same as that of the outer rim or tire.
  • the sheet-metal plates E are cut in the form of a rectangle; but the outer'edge, c, is curved to conform with the curvature of the rim against which they abut and form a close connection.
  • These plates are set between the blades and rims at an angle of about forty-five degreesor, vin other words, said blades are so set as to form an angle of about forty-five degrees with a radial line drawn from the center to the circumference of the wheel, and also at wheel-and they incline upwardlyand outwardly from the line of contact with the blades to the line of contact with the rims, as is seen in Fig. l.
  • the Inetal plates E' serve to stay and brace the rims and blades, and at the same time further increase the forcing and suction capacity of the wheel.
  • a fan-wheel In a fan-wheel, the combination of the circular tapering rims A and D, hub C, blades or fans B, radiating from the hub and set at an angle to the plane of revolution, and the plates or braces E, set at an angle to a radial line drawn from the center of the wheel, all substantially as and for the purpose described.

Landscapes

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

Description

V(No Model.)
W. SCHMOLZ.
FANWHBBL. No. 279,603. Patented June 19,1883.
@/YN E W- N. Prrzns. mnmvumompw. wash: nnnnnn c 'blades or fans.
UNITED STATES .PATENT OFFICE.
WILLIAM sCIIMoLz, oF'sAN FE'ANCIsCo, CALIFORNIA.
FAN-WHEEL.
` SPECIFICATION forming part of Letters Patent No. 279,603, dated June 19, 1883.
Appucaubnniea November 17,1882. (No modem To a/ZZ whom it may concern,.-
Be it known that I, WILLIAM SCIIMOLZ, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Fan-Wheels, of which the following is a specification.
My invention relates more particularly to .Certain improvements upon a fan-wheel for which Letters Patent No. 265, 984 were granted to me on ,the 17th day of October, 1882, and the object of my invention is to provide a fan- Wheel of simple and cheap construction and of great power, and adapted for exhausting and forcing atmospheric air, vapors, and gases from and into mines, Ventilating and cooling buildings, railway-cars, &c. I accomplish this object by the mechanism illustrated in the accompanying drawings, in Which- Figure lis a front elevation of my improved fan-wheel. Fig. 2 is a face view of one of the Similar letters of reference are used to designate like parts throughout the several views.
The rim A is composed of a ilat sheet of metal bent into a truncated conical form, or of less diameter at its inner than at its outer edge. The blades B, which radiate from the hub C, are set at an angle to the plane of revo- -lution, and are formed, preferably, of smooth sheet metal.
At a point about midway between the hub C and the rim A, I set an interior band or rim, D, likewise composed of flat or smooth sheet metal bent into the form of a truncated cone, whose apex or point of generation is the same as that of the outer rim or tire.
The sheet-metal plates E are cut in the form of a rectangle; but the outer'edge, c, is curved to conform with the curvature of the rim against which they abut and form a close connection. These plates are set between the blades and rims at an angle of about forty-five degreesor, vin other words, said blades are so set as to form an angle of about forty-five degrees with a radial line drawn from the center to the circumference of the wheel, and also at wheel-and they incline upwardlyand outwardly from the line of contact with the blades to the line of contact with the rims, as is seen in Fig. l.
l The object in giving the described taper to the rims is to increase the suction and forcing capacity of the fan-wheel; and I have found by actual experiment that a body of air can be blown or forced fully three times farther with an inwardly-beveled rim than it can be with the cylindrical rim described in my former Letters Patent, the number of revolutions given to the wheel being the same.
The Inetal plates E' serve to stay and brace the rims and blades, and at the same time further increase the forcing and suction capacity of the wheel.
By this construction it will be seen that the outer atmospheric air is concentrated as it is drawn through the wheel, and the whole volfurthermore, that when using the fan as an exhausting-fan the outward flare given to the parts will impart a centrifugal motion to the body of air drawn through the fan and dispel it outwardly, thereby removing a solid body of air and enabling the wheel to be run with less applied power.
Having thus described my invention, what I claim, and desire to secure by Letters Patent, is
In a fan-wheel, the combination of the circular tapering rims A and D, hub C, blades or fans B, radiating from the hub and set at an angle to the plane of revolution, and the plates or braces E, set at an angle to a radial line drawn from the center of the wheel, all substantially as and for the purpose described.
In testimony that I claim the foregoing I have hereunto set my hand and seal this 4th day of November, 1882.
WILLIAM sCIIMoLz. [L sg] Witnesses C. W. M. SMITH, CIIAs. E. KELLY.-
about the same angle with the axis of the ume is driven in the desired direction; and,
US279603D Fan-wheel Expired - Lifetime US279603A (en)

Publications (1)

Publication Number Publication Date
US279603A true US279603A (en) 1883-06-19

Family

ID=2348821

Family Applications (1)

Application Number Title Priority Date Filing Date
US279603D Expired - Lifetime US279603A (en) Fan-wheel

Country Status (1)

Country Link
US (1) US279603A (en)

Similar Documents

Publication Publication Date Title
US585188A (en) Screen attachment for suction or exhaust fans
US3515498A (en) Blower
US4648312A (en) Apparatus for ventilating an enclosed area
US2023111A (en) Silent fan
JP3960776B2 (en) Blower impeller for air conditioning
US3368744A (en) Ventilator fan impeller
JP2001509226A (en) Impeller and fan incorporating it
MY189574A (en) Impeller and axial flow fan
US8313299B2 (en) Frustoconical centrifugal wheel
US279603A (en) Fan-wheel
US20030147745A1 (en) Centrifugal fan
US265984A (en) Fan-wheel
US839273A (en) Centrifugal fan or pump and casing therefor.
US1462557A (en) Blower or suction fan
US3165257A (en) Pressure inducer
US3011693A (en) Apparatus relating to centrifugal wheel inlet boundary control
US795938A (en) Blower or fan.
US866887A (en) Rotary fan.
US1150278A (en) Ventilating fan-wheel.
US1243615A (en) Fan.
US509142A (en) Concentrating-blower
US176755A (en) Improvement in exhaust and blower fans
US430796A (en) Blower
US303375A (en) Blower
JPS5844298A (en) Blower