US2563449A - Heater structure - Google Patents

Description

J. M. AUFIERO HEATER STRUCTURE Aug. 7, 1951 2 Sheets-Sheet 1 Filed July 15. 1949 all/l" a, 4

:HHHHH INVENTOR. .fa/m J 1 Ha (era BY HTTORNEYS 1951 J. M. AUFIERO 2,563,449

INVENTOR.

Join f1 liuflaro A TTUR VEYJ Patented Aug. 7, i951 HEATER STRUCTURE John M. Aufiero, Plandome, N. Y., asslgnor to E. A. Laboratories, Inc., Brooklyn, N. Y., a corporation of New York Application July 15, 1949, Serial No. 104,973

. 1 Claim. 1

This invention relates to a structurally and functionally improved heater assembly and especially an apparatus which iscapable of being readily transported; such apparatus depending for its heat source and operation upon electric current.

It is a primary object of the invention to furnish a heater structure which will be alternative to and in certain aspects presents improvements over the structures disclosed in my prior applications for United States Letters Patent filed on May 12, 1948, under Serial Numbers 26,492 and 26,493, now Patents No. 2,504,785 and No. 2,506,408, respectively.

A further object resides in the provision of a structure in which heat transfer will occur not alone due to the flow of air past heated surfaces such as coils, but also due to radiant heat. Therefore, the user will be subjected to the pleasant sensation of a warm air flow and will additionally receive the benefit of heat rays as directed towards him; the latter additionally creating the psychology of a warming effect.

Still another object is that of furnishing an apparatus type in which the wire will be properly housed and protected so that an extremely neat and commercially desirable assembly is furnished.

Still another object is that of providing a design which will embody relatively few parts each individually simple and rugged in construction, such parts being capable of ready manufacture and assemblage and when so assembled operating over long periods of time with freedom from all difiiculties. With these and other objects in mind, reference is had to the attached sheet of drawings, illustrating one practical embodiment of the invention and in which:

Fig. 1 is a front view of the apparatus with certain of the parts broken away to disclose underlying structures;

Fig. 2 is a sectional side view taken along the lines 2-2 and in the direction of the arrows as indicated in Fig. 1, and;

Fig. 3 is an enlarged transverse sectional view of a portion of the assembly and taken along the lines 3--3 and in the direction of the arrows as indicated in Fig. 1.

In these views the numeral 5 indicates the base portion of the apparatus which may be provided with suitable supporting elements 6 and mounts by a pivot 1, a strap 8. The latter is conveniently of generally U-shape and mounts adjacent the ends of its arms pivot members 9 which are secured to a housing conveniently supporting a handle In adjacent its upper end. The configuration of the several parts may be varied in numerous particulars. However, as shown, it is obvious that the supporting strip or bracket 8, may be axially rotated as desired with respect to base 5. Also, the housing may be tilted around a horizontal axis as defined by the elements 9 and may be clamped against movement by these elements. Additionally the entire apparatus may be transported by the handle [0.

As has been shown especially in Figs. 1 and 2, the housing is preferably of generally circular shape. It includes spaced walls II and I2. Brackets I4 may be coupled to extend from inner face of the latter wall and may be secured against movement with respect to each other. These brackets mount a motor IS; a cushioning strip [6 being conveniently interposed between the encircling portions of the brackets and the outer face of the motor casing. Grilles l3 may be disposed adjacent the forward and rear faces of the housing so that air may freely circulate therethrough. A fan I! is mounted by the motor shaft to be driven thereby.

Supporting units [8 may extend outwardly from the motor casing and mount forwardly extending arms IS. The latter support a mounting 20 which at spaced points has secured to it refractory spools or elements 2| conveniently by means of screws or bolts 22. The latter provide support for a helical coil of resistance wire 23. As shown especially in Fig. 1, that coil may be disposed according to the configuration of a star, having any desirable number of arms.

As shown in detail in Fig. 3, a strip 24 is interposed between the spools 2| and the mounting 20. This strip should have an outline corresponding to the configuration of coil 23. As shown, it is preferably fiat. Its forward face may be bright or polished so as to furnish a reflecting surface. As is apparent, the coil 23 may lie substantially midway between the edges of strip 24. It will be reflected 1n the face of this strip. Therefore, if the latter is incandescent the resultant effect will be magnified or duplicated to an observer in advance of the heater.

Current-supplying lead 25 extends from a point beyond the housing through an opening in the same and into the space between walls I l and i2. These leads project through an opening preferably in the inner wall [2 and are connected to the resistance 23 and the motor 15. Also, they are connected to a switch 26. The actuator for the and elements such as 9"are employed. 'The'reafter, switch 26 may be actuated. According to one such actuation and as described in my earlier application heretofore referred, to motorl will operate at full speed to correspondingly drive the fan and assure of passage *"and distribution of a maximum amount of air through the housing. Under these circumstances the resistance will be inoperative, or substantially so and the air flow will be used for ventilation or cooling. According to another positioning oii he switch part "themo tor and the resistance 23 will be in series with each other. 7 V 1 Y r, "Under these circumstances the motor will LOD- erate at substantially :less speed and instead. of distributing cool air will cause'a'relativelygentle flow'of such airpast the'resistance which is now highly heated. 'Under. such flow the air will be warmedabyiflowing over and through the convolutions of coil 23. and theipartsadjacentthereto. In this connection, it-will be eobservedthatthe resistance is spaced from and otherwise related to the strip 24 in a manner such that. a 'baflie eifect. is created and the air. flows over. the .edges of the 'strip'and' thence towards the coils; Therefore, a proper heat exchange will occur. Additionally, 'hOWQVEIZQI lt is apparent that the glowing or incandescence of the'resistance coil, will be somewhat enhanced becauseaof this baffling effect. Alpers'o'n in a position to beiwar-med by the heater or. in other wordshin froritof-thesame will not alone :be aware of the incandescence :of the coil, but :this "effect. wilLbe magnified incident -,to the reflection-of the; incendescent; imageof the latter in the face vofistripxfl.,jTherefore, aypsychological effect will, be produced which is most'pleasing; this being inaddition to the rays which are radiated towards the ,observer 1 particularly because of the preferably reflecting nature 'of strip As shown, the current-supplying leads are connected to the resista-ncebyextending to dielectric,- blocks '21. The; latter are supported by certain-of the arms l9. Terminals 28 are; car,- ried by; the blocks and serve to connect the-leads with the-resistance 'and motor. ;In this manner, an extremely compact and {safe assemblyzis fur-. nished.

- gfiIhus among others, theseveral objects'pfthe invention as specifically aforenoted are achieved. Obviously, numerous changes in construction and rearrangement of the parts might be re sorted to without departing from the spirit of the invention as defined by the claim.

I claim:

A heater including in combination a shroud forming a circular casi'ng,,fa motor driven fan positioned within said shroud to'produce a flow of air therethrough; a bracket support within said shroud supporting said fan; a narrow elongated, flat strip mounted on said supporting bracket perpendicular to the axis of said shroudand the axis :of rotation of said fan; a flat reflecting face on-the surface of said strip adjacent said -fan; insulating supports mounted on lar to the longitudinal dimension of said strip,

-mounts' on said insulating supports, an incandesceable electrical resistance having a diameter at least one-half the :width of said reflectingiace and spaced from said reflecting ia'ceHon- 'said mounts in advance-of the refiectinglstrip between the latter. and the-fan; said electrical :resistance positioned in linewiththedimension .of said insulating strip between said strip and the fan, nar'- row fiat edges of said reflectingrfaceperpendicularto the axis of. said-shroud and the axis of rotation of saidfan extending insaidperpendibular plane *toprovide said :reflecting face with 'a width less' than twice the diameter of :said resist: ance whereby-air inits movementthr'oughtthe shroud under the impulse .of the fan flows outward around the edges of the fiat'strip and contacts the resistance on flowing inward across the reflecting surface through the spacing of the resistance from the flatstrip from: which resistance-the heated air is projected by the fanblades outo'f the groundwhile the-incandescence of the electrical resistance is visibly refiected in the narrow longitudinaledges'of the refiectingface.

' JOHN AUFIERO.

REFERENCES CITED The following -references i-are of re'co-rd in-the file of this patent:

UNITED. STATES. PATENTS

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