US2278376A - Unit heater - Google Patents

Description

March 31, 1942.- I F M .YQUNG 2,278,376

UNIT HEATER y Filed Oct. 8, 1957 3 Sheets-Sheet 1 March 31, 1942. F. M YOUNG 2,278,376

UNIT HEATER Filed oct. a, 1937 s sheets-sheet 2k ATTORNEY March 31, 1942. F M. YQUNG 2,278,376

' v UNIT HEATER Filedoct. a, 1957 As sheets-sheet;

Patented Mar. 3l, y1942 UNITED STATES PATENT oFFicE Application october s, 1937, serial No. 168,0@

1 Claim.

My inventionv relates to unit heaters of the class, being particularly adapted to be suspended from the ceiling, and has for its object, generally stated, to provide a heater that is simple, eiicient, Aneat in appearance, and onewhich may be manufactured at low cost.

I accomplish the foregoing objects by means of a novel housing structure, novel core struc- I ture and novel means for supporting the housingfby the core and for supporting the fan motor on the upper header of the core.

To these and other useful ends my invention consists of parts, combinations of parts or their equivalents as hereinafter set forth'and claimed and shown in the accompanying drawings in which:

Fig. 1 is a front elevation of my improved unit heater. c 4.

Fig. 21 is a side elevation of the unit as shown in Figure 1.

Fig'. 3 ris a fractional section of the housing frame taken on line 3-3 of Figure 2.

Fig. 4 is a rear elevational viewof the core with the fan and its support removed.

Fig. 5 is a side elevation of the core as shown in Figure 4. p 1

Fig. 6 is a bottom view of the lowery header. Fig. '7 is a side elevation of a unit having the housing and fan shroud cut-away so as to clearly illustrate the position of the core, fan shroud, fan and motor.

Fig. 8 isa transverse section taken on linel 8 -8 of Figure 7 having the fan removed.

.Y Fig. 9 is a fractional view of the top header illustrating the seat adapted to receive rthe cushion device for securing the top header tothe top ing and also illustrating how the two edges of, the farli-shroud are cut-away in order to make room for the motor support.

Asthus illustrated, my improved unit heater consists of a novel housing having a depth which provides room for the core, the fan and part Vof the motor as illustrated in Figures 2 and `r1, whereby the ns only are exposed from a front view of the unit, thus forming a rectangularv outlet about the size of the finned portion `of the coreiorfthe'passage of air from the core.

The housing comprises vertical side members I0 and II, each formed as indicated in Figure 8 byinwardly projecting anges I2 and I3. On the The ends of members I0 and II and their flanges are formed straight and at right-angles to the body ofthe member for a purpose which will hereinafter appear. f

Top and bottom-members I6 and I1 of the housing are formed similar to members Il) and Il each having inwardly extending flanges I8 and I9, members I8 having rearwardly extending flanges ZIJ- 20. Thus when memberslll, II, I6 and I'I are positioned as illustrated in Figure 1 a frame having a rectangular shape is provided, the ends of the frame members being secured together as follows:

Iprovide four corner pieces 25 formed to complete the housing as illustrated in Figures 1, 2 and 3. It` will be noted in the variousgures that the front and rear flanges of the top, bottom and side members of the housing are formed by an easy curve.- The outercorners of members 25 arecurved to register with they outer corners of the other housing membersas at 26. Members 25'are provided with a depression as at28-28 formingflanges 29--29A which areadapted to act as supports for the ends of members III, II, I6 and I'I as clearly illustrated in Figure 3. Thus when the Amembers are assembled as indicated in thevarous vgures, a: frame is provided having curved outer corners` and edges and being provided with right-anglek inner air passage corners at the front and rear of the housing as clearly illustrated in Figure 1 Members 29are long enough to provide a sub?. stantial seat ,for the frame members andcon-` venient means for securely fastening they framev together, thus providing a 'strong frame or housing having a neat. and pleasing appearance.

It will, be fseen that the exposed'joints be' tween members 25, I6 and I'I are on the'same vertical plane as members I4, and that the joints between all of the members will add ,to the ap'- pearance of the frame instead of detracting as in other devices of the class. I may'however,

A in some designs elect to form members 25in outlet side of members I0 and II I provide rearwardly extending portions I4--I4 having inwardly extending flanges I5-I5 (see Figure 8)'.

tegral with members I and II, in which case.

no horizontal contact line between these mem;-

bers'will be shown and the frame will consist .ofv

four separate --pieces rather than eight.

In order to further improve the appearance.

of the unit I provide moulding strips 30-30 being ypositioned on members I2 adjacent theA whereby the blades may be adjusted and held 1n any desired position.

I provide a suitalaley number of.` blades 3l, each being pivotally see cured tov flanges I 4 by means of bolts 32'. lThe bolts have...preferably spring supportedvnuts of which the ns may be suitably bonded t .y

the tubes.

Headers ll@ and 4I are provided withrearwardly extending projections 5I and 52,4 each being provided with a screw` threaded opening 53 for the reception of the inlet and outlet pipes. Member 5| is provided with an extension 5t having a suitable surface to which the motor support 55V is secured'as illustrated in Figure 7. The motor 56 Vis secured to the v'bottom of this support by means of rubber lor composition cushions as illustrated and has fan blades 51. It will be noted that the housing is preferably deep enough to extend over the larger part of the vfan motor and its support.

The core assembly as thus described, may be supported either by the inlet pipe or eye bolts 50-5 as will hereinafter appear. The method of securing the upper header to housing member I6 is as follows:

Header 4|] is provided with rearwardly extending members preferably for its entirelength, into which eye bolts may-be -screwed as at 46-46. Near the rear corners ofthis extension Iprovide cushion seats having flanges 60, the rear Aend being left open as at 6I. Thus when the 'core isin position-within the housing,.the composition cushion washer 62 may be inserted between members 45 and I6. Member 62 is provided with and is partially embraced by a `cupped washer 63 which is also flanged so as to be embraced by openings in member I6, these openings being considerably larger than bolt-65 which acts to secure the header to the housing.` This bolt is provided with a cushion washer 66V and a steel washer 61 whereby the bolt may be` made taut and the necessary pressure placed on `the washers. Thus it will be seen that there is no metal fcontact between header 40 and member4 I6 and that the connections be` tween these members are practically on aline with the center of gravity. Y Y,

It is desired that the lower header `l|| befree to move vertically but prevented from swinging transversely relative to the housing or to prevent the housing from swinging independent' of theheader. For this purpose I provide preferably U-shaped brackets 10, the upper -end being secured to the rearwardly extending ange `4'| on header 4I by means of a bolt as clearly indi-r cated in Figure '7.- The other end of bracket 'l0 is secured to member I'| by means of a suitable bolt 1I. Thus it will be seen that header 4I is free to move vertically independent of the housing.

I may elect to use a connection between mem-l bers '|0 and similar to the cushion connection between members 40 and I6 whereby there willY However, asv shown the noises set- I provide a novel fan shroud as follows: This shroud is made in two parts 15 and 16 and is preferably positioned and shaped as illustrated in Figures '7 and 8. The parting line is Vertical and the connections to the housing members are made through L irons 1l which are secured to members IU, II, I6 and I1. Members 15 and 'I6 are cut-away as indicated in Figure 11, to there- ...by make room for the motor supported as clear- 10 ly indicated in Figures 7 and 11. Thus it will be seen that by removing .the bolts used for securing the shroud members to member 11, the

shroud may be removed without removing the may be used on various length units; thus ther manufacture ofthe housing is simplified and it is strong, light and efficient.

It will be noted that there is no strain put on the housing because of the manner of securing the core unit to the housing which in turn is supported directly by eye bolts or by the inlet pipe. In fact, the entire assembly is free from strain and vibrationalnoises eitherset up by the r action of the air, the fanrblades or the motor.

By referring to Figure '1 it will be noted Vthat an opening is provided in member I6 which is concentric with screw threaded opening 53 and considerable larger thanthis opening. 4Clearly,

therefore, the inlet pipe will not be contacted by` member I6.. Member ||A is .provided .with .ex-

actly the same "opening 8| and in theA same position relative4 to openings 53 in member 52.

These openings areindicated by dotted vlines in` Figure 1.

It will be noted by illustrated .by dotted lines, that openings. are providedin memberr I6 which are concentric with the body of eye-bolts 5I)H and being considerably larger so-there is no contact between members I6 and 50. Thus there is no metal .contact between the housing; and the core excep'tmembers'l. f Y

Having thus V)shown and described my invenj 7 tion; I claimt.: A unit heater ofthe class described, comprise' ing in combination, a housing having a heat eX-,

change coreztherein, .said core comprising upper and 'lower headers having finned tubes forming an operating.connection therebetween, said head-l ers each having' rearwardlyY 'extending' centrally positioned extensions, upwardly and downwardly directed inlet and outletA openings in said exten- Y sions, a fan motor Vhaving 'a supporting connecbottom panel of said housing, said second yielding connections comprising U-shaped brackets, one free end of 'each bracket'. being rigidly connectedto the'header and the'other free end being rigidly connected' tothe housing; y

f f :FREDi/r. iroUNG..

scrutinizing Figure A1 and asy

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