US 2145621 A
Description (OCR text may contain errors)
Jan. 31, 1939. J, vgl-ALGO M5623 AIR TEMPERING UNIT Filed Sept. 25, 1936 2 Sheets-Sheet l J. V FALCO AIR TEMPERING UNIT Filed sept. 25, i936 2 'sheets-sheet 2 27 l,3,2 fag 31 ao @HM/vm;
Patented Jan. 31, 1939 UlTED STATES AIR TEMPERING UNIT John V. Falco, Everett, Mass. Application September 25, 1936, Serial No. 102,597
ll'his invention relates to unit type heating and cooling apparatuses and, more particularly, to power driven units for diffusing heated or cooled air.
One of the primary objects of the present invention is to construct an improved Ventilating unit in which the air passing therethrough is discharged throughout a radius of 360 degrees and thus secures even distribution of large volurnes of treated air.
Another object of the invention is the provision of suicient contact of the air moving through the unit with the temperature regulating means to insure sufficient heating or cooling to accomplish adequate changes in temperature in the room in which the unit is placed.
A still further object of the invention is to construct the unit with a minimum number of parts that are readily fabricated, rugged in construction and economical to operate.
lin the drawings:
Figure l is a front elevation partly broken away of a unit adapted to be suspended from the ceiling.
Figure 2 is a vertical section taken on line 2-2 of Figure 1.
Figure 3 is a front elevation also partly broken away of a modified form of the unit.
Figure l is a vertical section taken on line Li-Ll of Figure 3.
Figure 5 is a vertical cross section of a further modified form of unit which is adapted to be supported on the floor.
Referring to the form of unit illustrated in Figures l and 2, it will be seen that it consists of a pair of spaced apart circular front and rear plates i and 2 respectively which form a casing enclosing the blower and temperature transfer elements.
The circular casing plates l and 2 are secured in fixed spaced relation through the medium of a plurality of tie rods 3 positioned around the circumference of the casing. The rear casing sheet 2 is apertured to provide a passageway for shaft i of motor 5, the latter being supported on bracket t also affixed to the back casing sheet.
'I he front sheet of the casing has an opening i formed therein whose axis is concentric with relation to shaft d. An inwardly curved annular intake throat 8 is secured in the front opening and terminates adjacent the outwardly flared ange 9 formed on the inner edge of disc lll affixed to the outer ends of radially extending fan blades Il. The blades il are preferably oblique in contour and are integrally formed on circular back plate l2 which is provided with an integral hub i3 and aixed to motor shaft il. This type of fan construction draws in air axially through opening 'i and discharges the tempered air at a considerable Velocity throughout itsA en- 5 tire periphery so as to insure a uniform distribution and diffusion of rapidly moving fluid throughout 360 degrees.
The front and back casing sheets l and 2 are outwardly iiared near their circumferences and in 10 the enlarged channels thus formed are secured continuous circular headers lll and iii. Also disposed in these enlarged edge sections are a series of transverse tubes it in open communication with the headers lil and l5. When a suitable 15 heating or cooling medium is introduced into the header lli through upper inlet connection il, it circulates through the headers and connecting tubes it outwardly through connection i8. This arrangement insures a proper distribution of the 20 heating or cooling medium through all portions of the headers and transfer tubes.
The series of spaced circular temperature transfer ns i9, supported on the series of transfer tubes iii, are constructed of discs fabricated 25 from copper, aluminum or other thermal conducting metal. Each disc is perforated with a series of flared openings 2i] through which the tubes i6 are inserted and soldered thereto. i
Thus air drawn in from the room is pumped 30 outwardly through the series of parallel passages defined by the spaced discs i9 and consequently an excellent thermal transfer is accomplished between the heated or cooled discs i9 and the air contacting the discs. Steam, hot water, hot 35 air, chemical transfer liquids, refrigerants, cold water or cooled air may be introduced into the inlet connection il and discharged through the opening i8. As before stated, any of these heating or cooling mediums is uniformly circulated 40 throughout the headers and connecting tubes to transfer heat or cold to the discs i9 so that all air passing through the unit is properly tempered.
The unit thus described is of a type particularly designed to be supported from the ceiling 45 of a room by means of arms 2l which are fastened to the front and rear of the casing by the tie rods 3.
The modified form of unit illustrated in Fig- 50 ures 3 and 4 is of essentially the same construction as the unit previously described. However, in this form, the blower 25 driven by motor 26 is mounted in a square casing and includes front and rear circular headers 29 and sii joined by 55 transfer tubes 3| carrying spaced circular ns 32 similar to the unit just described.
This modified type of unit is used where it is desirable to have a portion or all of the tempered air directed into ducts or conduits leading to sections of the room which would not be aiected by a unit discharging throughout 366 degrees. In the modified unit, separator or baille plates 33 are secured between the front and rear casing sheets 2l and 28, the plates extending inwardly from each corner thereof to equi-spaced points on the periphery of the blower 25. 'Ihe plates 33 bisect the space between the front and back sheets and are slightly wider at their outer ends where the casing is enlarged, the balies being cut away at 34 to accommodate the transfer tubes 3| and discs 32.
It will be evident from this description that in operation an equal volume of tempered air is discharged through each of the passages formed by spaced pairs of baille plates. With this construction, the unit may be used to merely diiuse air through all four passages, or the passages may be connected to ducts while others are left open to diiuse air in the immediate vicinity of the unit.
The second modication of the unit shown in Figure also makes use of a spaced annular header and circular disc construction shown in the other two forms. This type of unit, however, is adapted to be positioned on the oor of a room and, consequently, the air is horizontally diiused through the conditioning portion indicated by the numeral 35 by being mounted in the upper portion of a tubular casing 36 secured on oor brackets 37. A propeller type blower 38 comprising a motor and propeller blades is affixed to a bracket 39 fastened to the bottom plate 40 of the casing 36. The curved inlet 4| directs the air forced by the blower 38 upwardly through the casing where it comes in contact with the horizontally positioned conditioning discs as indicated by the arrows.
'I'he conditioning unit 35 is secured in the upper end of the casing 36 by means of the iianged section 42 and air is prevented from rising through the center of the discs by outwardly flared top plate 43. This form of unit discharges large volumes of tempered air throughout 360 degrees in a plane parallel to the room flow.
What I claim is:-
1. An air tempering unit including a pair of spaced parallel circular headers through which a apertured to provide an air intake for said impeller and baille plates aiiixed between the said cover sheets and extending obliquely from adjacent the said impeller to the corners of said sheets.
2. An air tempering unit including a pair of spaced parallel circular headers through which a heating or cooling medium is adapted to circulate, a series of transverse conduits connecting said headers around their circumferences, cover sheets attached to the outer sides of said headers, and an air impeller mounted interiorly and centrally of said cover sheets, the front cover sheet being apertured to provide an air intake for said impeller and bailie plates aiixed between the said cover sheets and extending outwardly from adjacent the said impeller to the edges of said sheets.
JOI-IN V. FALCO.