US51321A - Improvement in fan-blowers - Google Patents

Description

larme Strate@ lw. Kunnrnck, or NEW YonK, N. Y.

HWPROVEIWENT IIN FANMBLOERS.

Specification forming part of Letters Patent No. llli, dated December 5, 1865.

To' all whom 'it may concern.-

Be itknown that I, WASHINGTON KENDRicK, of the city, county, and State of New York, have invented a new and useful Improvement in Fan-Blowers; and I do hereby declare that the following isa full, clear, and exact description ofthe same, which will enable those skilled in the art to make and use the same,

r reference being had to the accompanying d rawings, forming part of this specitication, in which-- Figure 1 represents a vertical section ot' a falrblower constructed according to my invention, the plan of section being taken transversely-to the blower-shaft. Fig. 2 is a sectional end View ofthe same. Fig. 3 is a side elevation.

Similar letters ot' reference in the three views indicate corresponding parts.

This invention relates to a fan-blower in which the air is taken on the periphery and discharged on the periphery, in contradistinction to the ordinary fan-blower,in which the air is taken in the center and discharged on the periphery.

" The improvement relates, also, to the form and construction ot' the case and of the fans, the case heilig made with au aunularcylindrical channel extending all round its periphery, and with a contraction which occupies the space between the annular channel and the ccntral part ot' said case, and the wings being constructed in such a shape that they fit the annular cylindrical space and the contraction, and all the air admitted to the case is forced ont.. The supply and discharge openings are situated at right angles toward each other, and the spider, which forms the bearing for the outer end ofthe blower-shaft beyond the pulley,which serres to impart motion to the blower, is provided with slots, so that itis adjustable according to the direction in which the driving-belt runs. Y

V Jkrepresents thecaseot' my fan-blower,which is provided with a supply-opening, a, and a dischargefopening, b, both beingtangential to said case, so that the air is taken on the periphery and discharged on the periphery.. .these openings communicate with an annular cylindrical channel, o, which extends all round the case, as shown in Figsl and 3. 'Ehe transverse section of this channel may be circular,

as shown, or it maybemade elliptical, or in any other desirable form or shape, although the circular form is the most convenient in practice. The space inside this annular channel is occupied by a contraction, d, giving the case a form, as shown particularly in Fig. 2, and the fans c of the'blowerB are made to t the interior of the case, so that all the air, or nearly so, admitted thereto is also forced out, very little being allowed to leak past the fans. The blower is mounted on a shaft, G, which hasits bearings in two spiders, D D', secured. to the outside of the case,and to whichmotion is imparted by a belt ruiming over a pulley, f, which is keyed on the shaft between one of the spiders, D', and the case, as shown in Fig. 2. In order to bring the arms in such a position that they donot interfere with the belt running over the pulley f, l have made said spider adj ust-able by means of slots g, through which the screws h pass, which secure the same to the side ofthe case; or.,',instead of these slots, any other suitable means might be einployed to obtain the desired object. ln some localities the drivingbelt runs up in aperpendieular line, and in others out on one or on the other side of the ease in different inclinations, and by making the spider adjustable I am able to accommodate its arms under all circumstances to the direction of the belt, so that they do not interfere with each other.

The great advantage of my fan-blower is derived from the manner in which it takes and discharges the air. The air on passing into thc case at'the periphery is propelled by each fan as the same passes the supply-opening, and,

being prevented by thc centrifugal force from passing toward the center of the case, it (the air) is driven out through the discharge-open ing, and very little, it' any, air beyond that due to the atmospheric pressure is carried round by the fans between the discharge and supply openings or through the arc j, Fig. l.

For these reasons my fan works by compara-l tively little power, and it gives a powerful snctiou, as well as a powerful blast. lt must be remarked that the fans ot' my blower can be cast on or with or otherwise attached to the shaft `or to their arms.,

lt will be perceived that this apparatus, as`

herein presented, is not applicable to the flow ot' liquids, inasmuch as with them a current near the periphery cannot be maintained wit-l1- out the use of gates and guards not requisite in an apparatus adapted to the flow of air.

What I claim as new, and desireE to secure by Letters Patent, is-

A fan-blower in which the air is taken on the peripheryanddischarged on the periphery, the two parts being,` at right angles to the periphery and to each other, substantially in the manner, and for the purposes set forth. i

2. Asoombined and arranged therewith, the

@meer case A, with an annular cylindrical channel, c, and contraction d, in combination with fans e, which t the shape of the case and fill the annular channel and the contraction,substan-` W. KENDRIUK.

Witnesses:

W. HAUFF, l E. KASTENHUBER.

Images