US1691421A - Heating device for air-circulating fans - Google Patents

Description

Nov. 13, 192s. y 1,691,421

S. A. XIPPAS HEATING DEVICE FOR AIR CIRCULATING FANS Filed April 29, 1927 Patented Nov. 13, 1928.-

uNrTEffST/ES PATENT-OFFICE.

socnnrnsnxlrras, kor BUFFALO', NEW YORK.

- 'HATINe DEvICE For. y'AIRCIRCULATING FANS.

i rApplicationriefiiiapru29,1927. seriaiNo. 187,421. f

l This invention ,relates `to improvements in tric heater which maybe quicklyat-tached to) fior detached'from such a casing, although it willbe obvious that theheater mightV be used `with other types of Ventilating fans and the" like. l n A f Anotherobject ofthe invention is to tui nish al heating attachment provided with resistance coils, and means for readily connect-y ing such coils to the wires of a fan motor, so

that the heater may be quickly attached and put in operation whenever desired. 4

Another object is to furnish an electric heater formed of hinged sectionsadapted to automatically interlock with a fan casing, when one of the hinged sections is moved relatively to the other one of such sections.

With the foregoing objects outlined and with other objects in view which will appear ias the description proceeds, the invention consists in thenovelfeatures hereinafter devscribedv'in detail, illustrated in the accom-A panying drawings, and more particularly pointed out in the appended claims. Referring tothe drawing,

Fig. 1 isa top plan ,viewfofl the improved heater. y

Fig. 2 is an `enlargedside view of the same, andshowing the heater attachedtothe fan casing.. c

Fig. 3 is an enlarged vertical sectional View of theheaten'and illustrating the manner in which it embraces the'fancasing. n

Fig. 4 is anenlargedsectional View taken on line4-4 of Fig. y n. Fig. 5 is a side view partly in vertical section of the heater, in `folded condition.

In the drawing, 1 designates a spherical fan casing of the `type shown in my above .mentioned patent, such casing having air in- 1ct openings 2, and air outlet .openingsr 3. Such casing is preferably made of upper and y'lower halves 4 and 5, connected together'at their/edges by a bayonet joint (not shown), arranged Within a bead 6 which encircles the spherical casing at its horizontal medial por-` n tion.

It is the main purpose of the present in'- vention to provide an electric heater which may be rea-dily and speedily attached to this tan casing, and adapted to heat the air as it is discharged,substantially horizontally from the various outlet openings 3, around the fan casing.` The heater may be ot' any approprif ate construction, and orthe purpose ofdisclosingfthe invention, I have illustrated a suitable embodiment of the heater.4 It includes a plurality of rings 7 ofinsulating Ina-,-

terial, spaced apart and connected by pins 8, l

and each ring is divided into a plurality of sections; the sections oftheupperring being hinged together at 9, and these hinges being arranged at diametrically opposite sides of the ring, to permitthe ksections at one sideto be folded overon to the sections at the other side, as'shown in Fig. 5.

Resistance coils 10 are arranged between the rings andare seated in grooves 11 of the latter, these coils, when in use, surrounding the fan casing. The ends of the coils are electrically connected to sockets 12 or the like, designed to receive pins 13 or the like, for connecting the coils to the line wires.

In actual practice, the pins may be connected to the wires which lead the current to the motor of the fan, but this forms no part of the present invention.

As best shown in Fig. 3, the upper and lower rings 7 have their inner surfaces converging toward the middle ring, so that these surfaces will conform to the spherical contour of the casing; the upper ring 7, in such case, resting on the outer surface of the casing, and thus supporting the heater.

The middle ring may be narrower than the other rings, as shown in Fig. 3, to accommodate the bead 6 on the casing, or, if de'- sired,-the middle ring might have its inner surface grooved to receive said bead, the bead` in such case, also functioning to support the heater;

The opposite sides of the lower ring may,

if desired, be provided with spring catches 14; to automatically lock the hinged sections in position, when the latter are movedinto alignment, that is, into the position shown in Fig. 2.

From the above,l it will .be clear that in attaching the heater tothe fan casing, the heater may be placed on thecasing fromabove, and at this time, the sections of the bottom ringl 7 will be separated slightly.

When the inner beveled surface of the upper.

Wires may be inserted in the .sockets 12, and

the coils 10 will be heated, and this heat will beiniparted to the air forced out through the openings 3.

'From the foregoing disclosure, it is obvious that the invention may partake of many forms, so long as it is capable of being readily attached to the casing, and of surrounding the latter, to permit the air discharged radially from the fan casing'to be heated as it travels by the heater. lVlien the heater is attached, the fan not'only circulates the air, but the air is heated during the circulation.

I am aware that various changes may be made in the details disclosed without de-y parting from the spirit of the invention yas expressed in the claims.

What I claim and desire to secure by Letters Patent is:

1.A An electric heater including a plurality of a'mlularA insulating rings, means connecting the rings together, resistance coils asso eiated with the rings, and extending entirely around the heater, one Vof said rings having its inner surface beveled to permit the same to rest on n:i Veubetafnitially spherical surface for supporting the heater.

2. An annular electric heater comprising superposed rings of insulating material,

gether in spaced relation, and heating wires connected to the insulating rings, and extending around said casing'.

4. A combination :as claimed in claim 3, in which the heater is formed of eec'ytions hingedly connected together.

In testimony whereof I allix m signature.

SOCRATES A. IIPPAS.

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