US2135842A - Deflector means - Google Patents

Description

D. H. PRUTTON DEFLECTOR MEANS Nov. 8, 1938.

Filed July 12, 1937 2 Sheets-Sheet 1 lNVENTOR DANIEL H. PRUTTON NOV. 8, 1938. I D, PRUTTON 2,135,842,

DEFLECTOR MEANS Filed July 12, 1937 2 Sheets-Sheet 2 lNVEN'f'OR DANIEL H. PRUTTON Patented Nov. 8, 1938 UNITED STATE OF F IQE 8 Claims.

This invention-relates'to improvements in de flector means forchanging'the direction of flow fromnair delivery-means.

One of-the objects of the present invention is to vprovide'a novel deflector .meansfor causing an oscillation ofthe-air currents delivered from a fan means or the like.

Another feature of the present-invention is the novel arrangement of a deflector meansby which a stream of air is directed in varying conoidal forms having a common axis.

Another feature of the present invention is the provision of oscillating air streams from a piece of fan equipment, whereinno moving parts are visible.

Another object of the present invention is to provide an oscillating stream of air by means of novel deflector meanshaving few operating'parts very-simply arranged.

Another object of the present invention is the provision of a'casing having air delivery means for discharging air at oneend of the casing and a diaphragm-supported in spaced relation to the delivery end .of the casing, together with means for varying the position of the diaphragm so as to vary the angle of the air stream deflected by it.

Other-novel features of the invention will be apparent from the accompanying drawings and description and the essential features will be summarized in the claims.

In the drawings, Fig. 1 is 'a central section through one embodiment of a fan means combined with my improved deflector means; Fig. 2 is a view-similar to Fig. 1 showing another position of the parts; Fig. 3 is a detail View showing a portion of the driving connection between the motor and thedefiector means; Fig. 4 is a sectional View along the line 4-4 of Fig. 1, showing the arrangement of the driving mechanism be- .tween the motor and-the deflector means ;.Fig. 5 is a sectional view through a modified form of apparatus; Fig. 6 is a top plan view of another modification; while'Fig. 7 is a sectional view along the line ll of Fig. 6.

While my invention .is applicable to various shaped devices equipped with various air moving means, I have illustrated in Fig. 1 a casing I!) circular in section and supporting by the web H a motor IZ'having a shaft l3 which drives fan [4 soas to propel a stream of air upwardly past the motor and out the upper end of the casing. The lower end of the casing isprovided with air inlet openings [5 or the casing might be elevated on legs for the purpose of providing an air inlet.

The:entire device1here shown is adapted to be placed upon ther-floor=' or upon a table, but other applications of'myinvention will occur to those skilled inthis art.

Positioned transversely of the casing at the air delivery end thereof is a diaphragm it which -is preferably flexible and "may be made of rubvber, leather or the like. This diaphragm is supported centrallyon therod H and is supported at its peripheryiby the cap member 18 so that the peripheryiof the diaphragm is in spaced relation tothe delivery-end of the casing l0. To this end the caprmember I8 isi-supported by spaced members l8a. Thisprovides an annular opening l9 between the periphery of the diaphragm and the delivery endof'the casing 10. If desired the casing may have thereentrant curve as shown at Illa so thatthe discharge lip 28 has a directing .efiect uponthe. delivered current of air. The cap memberas shown may be provided with a centrallyraised portion-2i for accommodating the movement of.rod l1 and may have an insert member 22 suitably .secured to the cap member as by spot welding or :the like, this member having a centralopeningZZa for guiding the rod H. Thediaphragm is secured at its periphery tothe cap l8 by any suitable means, as for instance by the ring 23 which is preferably secured to the cap so as to permita replacement of the diaphragm if necessary. The cap I8 is upwardly convex as shown in Fig. 1, although other forms of cap .may beiused to obtain similar results.

. Means isprovidedfor varying the position of the diaphragm soas to change the direction of theair current delivered through the opening Hi. In the formshowniin Fig. 1, the central portion of thediaphragm ismoved upward and downward .so as tomove .the diaphragm alternately between the positions shown in Figs. 1 and 2, thus .delivering theair in conoidal forms as indicated by the arrows in these figures. In Fig. 1 the air stream isdelivered in substantially conoidal form upwardly-as indicated by arrows 24,- and in Fig. 2 downwardly as indicated by arrows 25. In other words, the direction of the deflected air stream is at angles to the central axis of the easing extending radially outwardly with the angles varying during the operation of the device. In the 'form shown in Figs. '1 and 2, this deflection of the air currents 'is radially outward from the central axis in all directions and the angle of the deflected .air stream to "the central axis varies from an inclination .away from the delivery direction ofthe main airstream as in Fig. l to a position wherethe angles are inclined backwardly toward the delivery direction of the air stream as shown in Fig. 2. It will be noted that the various conoidal forms of the deflected air stream have a common axis, namely, the central axis of the casing. As shown in Fig. 1, the diaphragm it approaches a position parallel to the mouth 20 of the casing 59 and in the position of Fig. 2, it approaches a position parallel to the convex cap member l8, thus giving a well defined direction to the deflected air stream.

While other means might be used to cause the movement of the diaphragm just described, I prefer to utilize the motor l2 for this purpose. As indicated in Figs. 1 and 3, a rotating fan of the usual self-oscillating type may be adapted for this use. One such type of fan utilizes the motor shaft I3 to drive a worm 26 which in turn drives a worm gear 21 on shaft 28. On this shaft is a. second worm 29 driving a worm gear 30 on shaft 3| which is at to the motor shaft as indicated. In the ordinary oscillating fan this shaft has an eccentric as indicated at 32 having a pin 33 utilized to oscillate the fan. In the present instance I connect pin 33 by a connecting rod 34 with a pin 35 which is rigidly connected to the lower end Ila of the rod IT. The portion Ila is slidably mounted in a member 36 which is rigidly supported on the motor casing. This is provided with a slot 36a. for the accommodation of pin 35 during its oscillation in a vertical plane. Preferably the shaft 3| is extended in both directions as indicated at 3; and provided with a second eccentric 32a with connecting parts as indicated similar to those just described with the suifix a so as to provide driving means for the rod I! on opposite sides thereof to prevent any binding of the parts.

In the operation of the device of Fig. 1, the motor is supplied with current from a suitable source not shown. The fan delivers a current upwardly within the casing l0 and the operative connections between the motor and rod l'l cause a movement of the central portion of the diaphragm between the positions of Figs. 1 and 2 alternately so as to vary the deflected current of air between the positions shown by the arrows.

In Fig. 1 I have shown a diaphragm having a fixed periphery and a movable central portion but it is possible to obtain a similar'efiect by fixing the central portion and moving the periphery. This modification is shown in Fig. 5 where the parts similar to Figs. 1 and 2 have been similarly designated. In this case a cap member l8 supports the diaphragm [6 at the central point 31 as by means of spaced supporting members I3a secured to the casing It]. The periphery of the diaphragm is secured to a sleeve member 38 open around a major portion of the top side walls as indicated at 3801.. The connecting rods 34 and 34a are connected to the sleeve member 38 as indicated. It will be obvious that operation of the motor will cause the diaphragm to move between the full line and broken line positions of Fig. 5, resulting in a variationin the deflected stream of air as indicated by the full and broken line arrows.

In Figs. 6 and 7 is shown another modification wherein the casing is substantially semicircular in section or at least thedischarge end is substantially semicircular. Here again the parts similar to those in Fig. 1 have been given similar reference characters. The difference here is that the diaphragm 39 is substantially semicircular in form and preferably closely corresponds to the cross section of the casing. The cap member 40 may be formed by extending one of the side walls of the casing upwardly as at 40c and then bending the same over the top of the casing as indicated. Supporting members may be supplied at 40b if desired. The diaphragm is secured to the cap member 40 by the strip 4| extending from point 42 to point 43 about the arcuate side of the casing provided with the opening 44. The portion of the diaphragm next to the wall 40a is not fastened. Here again the central portion of the diaphragm at 45 is secured to the rod II which in turn is supported for reciprocating movement by the brackets 46 carried by the casing. In this form of device, upon operation of the motor the diaphragm is oscillated between the full line and broken line positions of Fig. '7, causing the deflected air currents to take the directions indicated, varying between the two sets of arrows shown and extending in semicircular distribution about the top of the casing.

ering an air stream at one end of said casing, a

flexible diaphragm in said delivered air stream having a peripheral support and a central support, the periphery of said diaphragm being spaced from the said one end of said casing, and

means for moving one of said supports in the direction of air stream delivery whereby to vary the deflecting angle of said diaphragm.

2.v In combination, a casing, air moving means within the casing for delivering a stream of air at one end thereof, a flexible diaphragm having its periphery held in spaced relation to the delivery end of said casing, and means for moving the central portion of the diaphragm endwise of the casing, whereby'to vary the angle of the airdelivered in the space between said diaphragm and casing.

3. In combination, a casing, air moving means within the casing, a flexible diaphragm having peripheral and central supports, the periphery of said diaphragm being held in spaced relation to the delivery end of said casing, and means for moving the periphery of the diaphragm toward and from the end of the casing to vary the angle vof the air stream there delivered.

4. In combination, a casing substantially semicircular at its delivery end, air moving means within the casing, a flexible diaphragm having a semicircular periphery supported in spaced relation to the corresponding delivery end of the casing, and means for moving the central portion of the diaphragm endwise of the casing.

5. In combination, a casing, a motor supported within said casing, fan means driven by said motor for delivering air at one end of said casing, a diaphragm transversely of said casing end having a central support and a peripheral support maintaining the periphery of said diaphragm spaced from the delivery end of said casing, eccentric means driven by said motor, and an operative connection between said eccentric means and one of said supports for moving the said one support endwise of the casing to vary the angle of said diaphragm as it deflects the delivered air stream.

6. in combination, a casing, a motor supported within said casing, fan means driven by said motor for delivering air at one end of said casing, a diaphragm transversely of said casing end having a central support and a peripheral support maintaining the periphery of said diaphragm spaced from the delivery end of said casing, and means driven by said motor having an operative connection with one of said supports for moving the said one support endwise of the casing to vary the angle of said diaphragm as it deflects the delivered air stream.

'7. In combination, a casing, means for delivering an air stream at one end of said casing, a flexible diaphragm having its periphery held in spaced relation to at least a portion of said one end of said casing, and means for flexing said diaphragm to vary its effect upon the air stream delivered through said space between said diaphragm and easing.

8. In combination, a hollow casing adapted to rest upon a supporting surface with the passageway therethrough in vertical position, a motor and a fan driven thereby in said casing adapted to deliver a stream of air out the upper end of said casing, there being air inlet openings in said casing, a flexible diaphragm supported across the upper end of said casing with at least a portion of the periphery of said diaphragm spaced from the end of said casing, and an operative connection between said motor and said diaphragm for flexing the latter to vary its efiect upon the air stream delivered through the space between said diaphragm and casing.

DANIEL H. PRUTTON.

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