US2866594A - Fluid moving means - Google Patents

Description

Dec. 30, 1958 'r. E. QUICK FLUID MOVING MEANS Filed Aug. 8, 1955 INVENTOR.

THOMAS E QUICK BY M lliii ATTORNEY Unite 2,866,594 FLUID MOVING MEANS Thomas E. Quick, Wichita, Kans.

Application August 8, 1955, Serial No. 527,029

2 'Claims. (Cl. 230-117) This invention relates to the movement of fluid ln a more specific aspect, this invention relates to the moveatively combine centrifugal type air moving means and pitched blade type air moving means.

Fluid moving means to move air are known in the prior art, both the so-called centrifugal blower type and the blade type fan. Each has its disadvantages. The fan type is ineflicient when moving air against a discharge pressure, and a great portion of the area traversed by the fan blades does not serve to move air, and if full area transfer is attempted by completely pitching the blades from tip to hub, cycling of air is created by the low pressure zone established near the hub. Also, blade type fans of any appreciable capacity must be quite large, taking up space, and this limits their use. The centrifugal blower, such as the co-called squirrel-cage type is not readily adaptable to the many air circulation operations and air exhaust operations which are desirably performed in structures today both industrially and residentially, desirable axial air flow from the blower being impossible, and large sized equipment and ducts are necessary to gain axial flow. And, neither the centrifugal blower or blade type fan give desirable streamline noiseless flow.

I have invented new fluid moving means which has a conoidally-shaped member with a plurality of spaced blades projecting from the member. The blades have an inner portion approximately longitudinal the axis of the conoidal member and an outer arcuate portion. Means such as an electric motor turns the blades in fluid moving operation with the blades mounted on the conoidal member. The blades of the new fluid moving means of my invention function dually, the inner portions approximately longitudinal to the axis of the conoidal member cooperating with the outer arcuate portion and the conoidal member to give a very streamline axial flow as a combination of centrifugal blower and blade type fan air movement. The new fluid moving means of my invention is very efficient; will move air efficiently against a back pressure; gives axial, streamline flow; and takes up little room to give high capacity.

The new blade structure and cooperating centrally positioned conoidal member, comprising the new fluid moving means of my invention, can readily be used in circulating fan structures of the horizontal type or vertical ottoman type, as disclosed in my copending application Serial No. 375,894, filed August 24, 1953, now forfeited, and Serial No. 414,357, filed March 5, 1954, or it can be used in conduit movement of air such as disclosed in these applications. Also, exhaust fan application of my new fluid moving means such as disclosed in my copending application Serial No. 458,554, filed September 27, 1954, now Patent No. 2,843,036, can conveniently be accomplished.

States Patentice Other uses, of course, will be-apparent to those skilled in the art.

It is an object of mytinvention-to provide new fluid moving means.

It is, another object of my invention to provide new" Other objects and advantages of my invention will be-' come apparent to one skilled in the art upon reading this disclosure.

Drawings accompany and are a part of this disclosure. The drawings depict preferred specific embodiments of the new fluid moving means of my invention, audit is to be understood that they are not to unduly limit the scope of my invention.

In the drawings,

Fig. l is a longitudinal elevation view partly in cross section of a preferred specific embodiment of the new fluid moving means of my inventionmounted in .a duct.

Fig. 2 is a front elevation view partly in cross section I of the means of Fig. 1.

Fig. 3 is a longitudinal elevation view partly in cross section and partly cut away of themeans of Figs. 1 and 2 showing preferred mounting of motor-means to drive i the fan blades.

following is a discussion and description of the new fluid moving means of my invention made with reference to the drawings whereon the same reference numerals are used to indicate the same parts or structure. The dlSClJSSlOIl and description is of preferred specific embodiments of my invention and it is to be understood that such is not to unduly limit the scope of my invention.

In the drawings, the new fluid moving means of my invention is shown mounted in,a conduit 5 which forms with the streamlined body of thefluid moving means an effective venturi shaped sectionwhich can be..varied as to restricted throat by'making the conduit more narrow.

overrthelength of the fan body, or, of,,course, .the throat can be enlarged by making the conduit larger.

The streamlined fan body has a fixed streamlined portron 7 to the rear which houses motor 9 and mounts guide vanes 11 which direct air flowing rearwardly in a rectilinear direction. The motor 9 can be mounted in any suitable manner, such as the threaded screws 13 which pass through the housing 5 and body portion 17 and into the housing of the motor. Guide vanes 11 are mounted on body portion 7 in any suitable manner such as by welding.

A hollow, streamlined, conoidally-shaped portion E5 of the body of the fan is mounted base to base on the drive shaft 17 of motor 9 in any suitable manner, this cone-shaped forward or hub portion being rotatably mounted and driven by electric motor 9. The conoidalshaped rotating portion 15 of the fan body has a plurality of blades 19 mounted thereon, preferably from 3 to 12 and more preferably 6 or 8. These blades 19 are preferably shaped and positioned as shown, namely curved spaced blades which are radially and longitudinally mounted on the forward portion. The blades 19 preferably have an inner portion next to the hub 15, the mean plane of which is perpendicular to the surface of the hub, and an outer integral portion, the mean plane of which is transverse the longitudinal axis of the conoidal forward or hub portion and at an acute angle with the surface of same. Also, as shown, blades 19 are preferably deeper in the forward portion than in the rear-- Patented Dec. 30, 19.58,

portion. Upon rotation of conoidal member 15, air is passed rearwardly over the fan body in streamline flow, and the vanes 11, which are curved reverse to the direction ,of rotation, straighten out the spiralling airwhichf exits from in contact with the hub and blade portion.

The diameter of the conoidally-shaped hub member at its largest transverse diameter is preferably about 50 to 8(9) percent of the diameter of the area swept by the blades 1 t In operation, the inner endportions of the blades 1.9 which are preferably approximately at right angles to the hub 15 surface act as centrifugal blower blades to create a low. pressure area on and near the face of the conoidal member into which rushes air which is thus passed back over the fan body, and the outer less pitched portions of the blades act as the usual fan or propeller blade .to move air ,rearwardly. The net combination produces a result which is a streamlined flow of air in a highly efficient fluid moving means which has small crosssectional area in relation to capacity, and which will eflia ciently move air against a back pressure. In addition, there is no recycling of air into the working area of my new fan means and the entire area is effective in moving air. 1

As will be evident to those skilled in the art, modifications of the new fluid moving means of my invention can be, made, or followed, in view of this disclosure without departing from the spirit or scope of the specification and claims thereof.

I claim:

1. Gaseous fluid moving means, comprising, in combination, an elongated streamlined body, a forward portion of said body being conoidally-shaped and rotatable and a rear portion of said body being conoidally-shaped and fixed,a conduit of circular cross section within which said portions of said body are mounted base to base and coaxial therewith, and forming with said conduit an annular passageway for said gaseous fluid, motor means mounted in said rear fixed portion and operable to rotate said forward portion and attached thereto, a plurality of curved spaced blades radially and longitudinally mounted on said forward portion, the line of intersection of said blades and the surface of said forward portion lying in a plane which contains the longitudinal axis of said forward portion, said blades having an inner portion radially extending from the surface of said forward portion and an outer portion the mean plane of which is transverse to said radially extending inner portion and each of said blades being deeper in its forward portion than its rear portion and increasing in pitch from front to rear, and spaced vanes fixedly mounted on said rear portion of said body to direct fluid moved by said forward portion in a rectilinear direction, said fixedly mounted vanes being curved reversely to the direction of rotation of said forward portion.

2. Gaseous fluid moving means, comprising, in combination, a conduit having a portion of substantially constant cross section, a streamlined body coaxially mounted in said portion of said conduit and forming an annular passageway therewith, said body having a rear conoidally-shaped portion and a forward portion of said body being conoidally-shaped, said body portions being mounted base to base, a plurality of spaced blades radially projecting outwardly from said forward portion 01" said body, the line of intersection of said blades and said forward portion lying in a plane which contains the longitudinal axis of said forward portion, said blades having an inner portion approximately radially extending from said surface of said forward portion and an outer portion angled fromsaid radially extending inner portion and turned in relation thereto, said blades being deeper in a forward portion than in a rear portion and increasing in pitch from front to rear, and means mounted in said rearward portion and connected to said forward portion to rotate said blades.

References Cited in the file of this patent UNITED STATES PATENTS 1,408,715 Seelig et al. Mar. 7, 1922 1,638,129 Parker Aug. 9, 1927 1,797,455 Vose Mar. 24, 1931 2,022,417 Gilbert et al Nov. 26, 1935 2,082,955 Hagen June 8, 1937 2,219,499 Troller Oct. 29, 1940 2,233,825 Walsh et a1. Mar. 4, 1941' 2,444,966 Troller July 13, 1948 2,581,873 Morrison Jan. 8, 1952 2,621,849 Minnis Dec. 16, 1952 2,637,487 Sawyer May 5, 1953 2,664,961 Goede Jan. 5, 1954 FOREIGN PATENTS 241,073 Switzerland Feb. 15, 1946

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