US2661606A

US2661606A - Trask

Info

Publication number: US2661606A
Authority: US
Publication date: 1953-12-08
Anticipated expiration: 1970-12-08

Description

Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed'Feb. 23, 1951 5 Sheets-Sheet l FIE E INVENTOR A LL E N TRASK awe-M ATTORNEYS;

FIE- 1 Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 5 Sheets-Sheet 2 l5 4 ,INVENTORZ ALLEN TRASK F15 3 fi w/ ATTORNEYS Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 5 Sheets-Sheet 3 FIE- E1 I (1:5 4 B GIID EIID 6:19 If! I 1 D (it. QIID @1119 62:3 (III .113

INVENTORI ALLEN TRASK ATTORNEYS Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 FIE. 7

5| T 4 L l 5 SheetsSheet 4 INVENTOR AL LE N TRASK ATTORNEYSI Dec. 8, 1953 A. TRASK 2,661,606

CONSOLE AIR CONDITIONER Filed Feb. 25, 1951 PIE. 1[]

5 Sheets-Sheet 5 INVENTORI ALLEN TRASK j gw ATTORNEYS:

Patented Dec. 8, 1953 UNITED STATES PATENT OFFICE-7;

aesnsos I CONSOLE AIR QONDITIONER Allen Traslgbhicago, Ill. 7 Application February 23, 1951, Serial No. 212,281

8 Claims. (01. 62-140) This invention relates to self-contained room air conditioners, and more particularly to console type air cooled air conditioners for installation in a room adjacent to a window.

A general object of this invention is a small, compact, simple air conditioner structure of high operating efficiency, that is well adapted to quantity production at low cost. More specific objects attained by the new structure disclosed herein are enumerated following:

1. A unit air conditioner constructed with a sheet metal chassis, and a wood cabinet of separate panels, which panels may be made in quantity production at low cost and quickly assembled separately and directly to the chassis in the final assembly operation on a quantity production assembly line.

2. A unit air conditioner constructed with a wood cabinet having a separate wood front panel easily removable for inspection of, and access to, the principal internal mechanism parts.

3. A unit air conditioner constructed with a Wood cabinet comprising separate panels tightly assembled to a rectangular sheet metal chassis so that the forces and shocks of handling and shipping will be transferred through the wood panels as compression forces borne by the chassis, thus eliminating the need for protective structural strength in the shipping container therefor, and eliminating the need for shipment of a wood cabinet in a separate container.

4. A unit air conditioner constructed with a one piece welded, rectangular sheet metal chase sis enclosed in a low cost wood cabinet comprising two L shaped wood panels demountably attached to the chassis sides and extending.

around the chassis front corners to hold in position a separately demountable wood front panel, and a wood top panel attached with hinges to the upper rear portion of the chassis.

5. In a unit air conditioner a condensing unit constructed with a three phase air cooled condenser including (1) a fin tube condenser; (2) an evaporative condenser integral with the condenser blower housing and adapted'for using water vapor condensate; and (3) a parallel bare tube condenser comprising extensions of the tubes of said first fin tube condenser.

6. A console type air cooled air conditioner wherein the condenser coil occupies substantially the full internal area. of a horizontal cross section of the cabinet to achieve exceptional compactness without sacrificing any part of the required condenser surface for efliciently handling thefull rated capacity of the unit.

7. A unit air conditioner including anair cooled condensing unit having its refrigerant discharge conduit from the compressor in direct series communication with a serpentine tube 2 metallically fused to the scroll of the condenser blower housing for utilizing the blower housing as an evaporative condenser for cooling hot refrigerant vapor and for evaporating Water vapor condensate into the outgoing condenser air stream.

8. A unit air conditioner with an air cooledcondensing unit mounted in a rectangular sheet metal chassis wherein the compressor unit and the condenser blower motor are supported on transverse metal rails having only their ends at-- tached to the chassis at its internal corners, to

accomplish sound isolation and exceptional quietness of operation.

9. A console type air conditioner adapted for receiving and discharging condenser airthrougha window duct, constructed with a condenser air inlet duct and discharge duct in its upper rear cabinet portion, a window duct adapter frame of horizontally tongue and grooved boards adapted for being selectively located in the register with said cabinet ducts, and tongue and grooved,

fill-in boards of different widths conterminous with said adapter frame and interchangeable in vertical assembly positions for selectively locat ing the duct adapter frame in register with the window duct. .1

From the experiences of reduction to practice,

laboratory testing, and the sale and use of commercial production air conditioners in the market embodying this invention, it has been determined that an air conditioner having a one horse power compressor and a cooling capacity of approximately 11,000 E. t. u. per hour may be constructed within a cabinet having outside dimensions of 43 inches in height, 29 inches in width, and 18 inches in depth. This is considerably smaller than other console type air cooled air conditioners currently on the market of approximately the same capacity and horse power rating. This smaller size is made possible by the structure disclosed herein, and this smaller size is an important advantage both from the stand point of appearance with other room furnishings and for installation within limited space.

The usual cabinet structure for a console type air conditioner is a unitary structure comprising two side panels, a front panel, and a cabinet topall assembled into a cabinet structure and adapted to fit over the air conditioner mechanism as sembled within a chassis. This conventional-type A 3 of air conditioner cabinet has several disadvantages that are overcome by the cabinet structure disclosed in this invention. It is expensive to assemble the individual wood panels into a separate cabinet structure in a wood working plant, or department, separate from the final assembly line for the complete air conditioner. A wood cabinet assembly is not structurally strong enough to support and carry the internal air conditioner mechanism in handling and shipment from thefactory to the fiscal user. The conventional one piece Wood cabinet must be crated and shipped separately, and then finally assembled to the air conditioner chassis the point of installation.

The wood cabinet of this invention is cated in panels by quantity production mill work processes and are delivered as separate panels to the air conditioner assembly line for attachiment to the air conditioner chassis in the final assembly operation. 'l he'panelsare assembled inclosecontact to the. chassis so that the cabinet. partakes of the structural strength: oft-he: chassis-.. AIL strains, forces, shocks, and pressures of hancling, crating, shipping, and-stacking in a ware-- house, are transferred directly through the woodz panels as compression forces against the l reavfi. one: piece steel. chassis; lit costs much. less toproduce the; panels. of. this; invention. and. assemble them in final assembly directly .to the chassis, -:separately,. than does to produce a conventiona-L'one piece wood cabinet. It is not; necessary to ship the cabinet separately, and. therefore this invention eliminates the. extra cost and: work of separate crating shipping: of; the wood cabinet. to the pointer? fi'nal'install'ation. The substantial cabinet cost retina-- tion of this invention mahespossibl-e a. retail. selling'price reductionthat puts the console air conditioner within. the: price range of other mag'ror household. appliances.

The principal engineering problems involved in constructingsmalt air cooled console' type air conditioners are those ofiheat rejection in the con.- d ensinginiit, and the rejection-of condensed-wate'r vapor from the evaporator. This specification-v will di'scl'ose ii -detaila new three phase air coolediconden ser for the condensing unit of a smali an conditioner that will efiiciently refe'ct the heat absorbed by the evaporator and opera;-

tionof the compressor and motor, and that efi-ect'i'vefiy' use all the latent cooling capacity of thecondensate byevaporating it in the condenser blower scroll constructed as an evaporative "condenser; This new condenser structure makes it possible to build more condensing ca pacity into asmauer space within an air conditioner chassis. This condenser structure is largely' respohsiblefor the exceptionally small and compact size which air conditioners may bebuilt when embodying this invention.

These and other objects and'advantages of this invention willmore f'ul-ly' appear from thefollowing description made in 'connection with the ac companying drawings, wherein like refer-erroncharacters refer to si la r-parts throughout-the several views; and in which? 'Figf-I is a front perspective view of an air conditioner of" this invention havinga wood console type'cabinet'.

Fig. 2' is a rearperspective viewofFig; 1- showing the cooling air inlet and outlet openings. v

Fig. 3'is'a front elevational view" ofFi'g. 1' with the front cabinet'panel removed 'to' show the internal mechanism.

Fig. 4 is a vertical sectional view of Fig. 3 taken at the section lines 44.

Fig. 5 is a projected view of the blower housing of Fig. 4 showing its left hand side with a serpentine refrigerant conduit metallically bonded to the outside of its scroll.

Fig. 6 is a projected View of the blower housing 20 of Fig. 4 showing its right hand side with a continuation of the serpentine refrigerant condluitof .Fig'. 5 metallically bonded to the: blower scroll.

Fig. 7 is a horizontal cross sectional view of Fig. 4 at section lines 'l-i, looking vertically downwamdi'into the air conditioner.

Fig. 8. is a rear elevational view of the removable front panel of the air conditioner cabinet shown Fig-.11.

Fig. 9 is an inside elevational view of the left hand cabinet side panel shown in Fig. 1.

Fig. 10 is a perspective view of a chassis for an air conditioner of this invention- The 1c is constructed a right hand sheet: metal side panel is and left hand side panel 1 3 aligned in parallel' relation and joineti by welding to interposed. lo-shaped partition 'lt-and bottom pan 1%. The chassis si'de pari'el'sh ave'front flanges l t, and rearfi'anges l'l; and are constructed with rectanguiaropenings F8 for the iii-letof'recircu-lated cooledair through. the air conditioner; The lefthand side: panel +3 has'acircular opening i ilf i n its lower portion for access to the inside of blower" housing 2 8 shown assembled thereto in Figs. B and? 1*. In the'lower' portion of right handside panel 121 s a circular opening 2+ used for access through the panel during assem'biy, inspection, and service.

The chassis side panels {2 and it have. eachtwo-bolt holes f2 2 s'ym'rnetrical ly spaced for bolts 23% used to secure the cabinet si'de panels Z l to theirrespective sides of" the chassis. The front flanges to of the two chass'isside panels 1'2 and t3- have each-two bolt holes 25 symmetrically spaced forholts' 26' to secure cabinet side panels 2 -4 to their respective. sides of the chassis. Thus each side'pa'nel of-the cabinet is-secured to its respec tive sideoff the chassis with four bolts, and by meansoi" these bcitsmav be readily assembled to, or disassembledffrom, the chassis; V I

The chassis'bottompan [,5 has sides 2"! formed vertically upwardand welded water tight at the corners. "Thefianged sidesv 21 are spot-weldedto chassis sidepanels 1'21 and #3 respectively; and to front flanges t6 and rear flanges IT of the chassis side panels. Thus pan to serves as a transverse structuralmem ber: for the chassis; and in addition .it is used-to catch. condensate that might accidentally dI'OpjfiOHl the air conditioning mechanism. Anycondensate thatifa-llsi into pan 1'5 will be distributed over a considerable surface area "and stibj ect'ed to a flow of heated air; as be hereinafter explained, to reeva'porate the condensate into an outgoingstream of condenser cooling; air.

The ll-shape'd partition [4" has at each end verti'nalLfianges Zid'forrned on its vertical portion,

at, each end horizontal flanges 2 Elf-formed. on its horizontal portion, as shown. in Fig; .41 TheseflangesZB' and 25' are spot welded respectively to chassis side panels 1 2' and I3 so? that.

the 1 partition .ld' becomes a transverse structural. member of the chassis; 'In'ad dition to being a stru'cturaimember off the chassis partition l t in] t upp ve t lrporti n; it provides one side" 7, of'each- "of-the two'condenser cooling air ducts, and its lower horizontalportibmbrovides a supscribed and explained in detail.

porting base for the evaporator assembly of the air conditioner, as will be hereinafter more fully described, and in addition it supports the condenser 55 suspended beneath it.

At the upper portion of the chassis is a horizontal sheet metal member 30 spot-welded to the top of partition I4. At each end of member 30 These louvers may be assembled, as an alternate,

within the opening 32 of each cabinet side panel 24. Whether louver 33 is assembled to the chassis side panels as shown, or to the cabinet side panels 24, is a manufacturing choice giving about the same end results since cabinet side panel openings 32 and chassis side panel openings l8 are in contiguous register.

Cabinet side panels 24 are constructed in an L-shaped section so that each side panel has a flange 34 extending around its respective front corner of the cabinet chassis covering at least a portion of the front flanges l6 of the chassis side panels I2 and I3. In assembly bolts 26 hold flanges 34 tightly in flat contact with chassis flanges l6 so that the inside corners of the side panels 24 fit around the front corners of chassis panels l2 and 13 in full contact. Bolts 23 secure the rear portions of the cabinet side panels 24 in flat contact with the respective chassis side panels 12 and I3. Thus any compressive forces upon the outside of the cabinet side panels will be referred directly to the respective chassis side panels underneath, and the structural strength of the sheet metal chassis panels will support the wood side panels 24 of the surrounding cabinet. Fiber board insulation 35 is glued to the inside surface of the side panels 24 for the purpose of restricting the transmission of heat and sound through the panels.

In the edges of cabinet side panel flanges 3d are grooves 3'6 arranged to receive the side edges of cabinet front panel 31. The cabinet is constructed by assembling its separate portions to the air conditioner chassis. First the two cabinet side panels 24 are assembled to the chassis as explained above. The front panel 31 is constructed so that it is assembled to the front of the cabinet by sliding it vertically downward with its side edges fitting the grooves 35 in the cabinet side panel flanges 34. The front panel 3! is retained by its bottom side portions resting upon flanges 38 at the front bottom of the chassis side panels I2 and I3. Reinforcing wood strips 39 are provided inside the front panel 37 which may be made of plywood, and fiber board insulation 40 is provided for restricting the transmission of heat and sound through the panel 37.

A circular opening 4| is provided in front cabinet panel 31, shown in Fig. 8, and a louver 42 is assembled behind this opening as shown in Fig. 1. This opening and louver is for the outlet of cooled air from the air conditioner.

The back cover of the air conditioner cabinet is constructed of several parts which will be de- At .the lower 5 6 rear portion of the cabinet is a removable'sheet metal panel t4 insulated with fiber board 93 and assembled to the rear chassis side panel flanges ll with sheet metal screws. Just above removable panel 44 and extending under its upper portion, is a sheet metal transverse chassis structural member 45 spot-welded at each end to the inside of flanges ll of the chassis side channels. This transvers'estructural member adds strength to the chassis, it provides support for the top of removable panel 44 to which panel 44 is attached with sheet metal screws, and it provides a support for an interchangeable series of wooden rear panelparts which will be described following.

Above transverse chassis member 45 and resting upon it is tongue and grooved board 46 having its groove downward and its tongue upward. Above board 45 is a second tongue and grooved board 47 asembled in tongue and groove register with board 46. Board 41 is substantially narrower than board 46. Above board 41 is a rectangular, wooden, tongue and grooved duct collar frame 459 assembled in tongue and groove register with board 41. Above duct collar frame 49, and assembled in tongue and grooved register with it, is tongue and grooved board 48 having its upward positioned tongue top in a plane with the tops of the chassis side panels l2 and I3.

The cabinet top panel 52 is hinged to transverse tongue and grooved board. 48 with hinges 53. This top panel may bemade of plywood.

Within the duct collar frame .49 is assembled rectangular sheet metal air outlet duct collar 50, and rectangular sheetmetal air outlet duct collar 5i. These collars are arranged forthe attachment of ducts extending through a window for the intake and discharge of condenser cooling air. Such a duct is not shown herein since it may be constructed in the usual way, and is not a part of this invention. The tongue and

grooved boards

46, 47 and 48, and the duct collar frame 4d are secured tothe inside of the flanges l! of the chassis side panels [2 and I3, by means of bolts at their ends. These four parts are interchangeable in theirvertical assembly relationship. Thus the duct collarframe 49 may be selectively arranged in different vertical locations within the back panel assembly of the cabinet. Boards 46, Al and 48 are made of different widths selected to give the greatest variety of locations for selectively positioning the duct collars. If the exact location for the duct collars cannot be obtained'as desired from an assembly of the three tongue and grooved boards-in any of their possible combinations, then one of the tongue and grooved boards may be; sawed. longitudinally into two widths which when separated and. relocated will provide the exact vertical spacing of the duct collars desired.

A rectangular sheet metal partition 43, shown in Fig. 7, between the tongue and grooved wooden members of the cabinet back panel, and the vertical portion of the L shaped partition I4, separates the condenser air inlet duct from the condenser air outlet duct. This partition-43 is in alignment and contact with the separating flange 54 between the duct collars 5t and 5!, and this partition contact will be had in all vertical positions of the duct collars within the limits of their selective assembly.

A fin tube condenser 55 is constructed with a right hand header plate 56 and a left hand header plate 51. Both of these header plates are rectangular andflanged with holes in the flanges for assembly bolts. .B thi e. condenser cpil and its the blower housing at a point where the air flow through the blower wheel will disperse the condensate against the inside of the blower scroll to wet a substantial portion of its surface. The blower housing 20 becomes an evaporative condenser removing heat from the refrigerant in serpentine tube by evaporation of condensate within the blower scroll which is in heat transfer relation with tube 6i? by reason of its being metallically fused to serpentine tube 60.

An electric line conductor cord 92 enters the cabinet through chassis member t shown in Fig. 2 to connect with conventional air conditioner operating circuits not shown.

In operation the evaporator fan 75 draws room air to be conditioned through the two iouvers 33 in the sides of the air conditioner cabinet, through the two evaporator coils 14, and then discharges it from the cabinet through cool air discharge louver 32. When the air passes through the evaporator coils M, heat and water vapor is removed from the air. The heat is absorbed by the refrigerant within the evaporat-ors as it changes from a liquid to vapor state and is carried by the refrigerant vapor into the compressor 65 where the vapor is compressed to a pressure that will cause it to give up its heat in the condenser of this invention which will be described in detail following.

The air cooled condenser of this invention is a three phase condenser. Phase one is the fin tube section of the condenser 55; phase two is the blower housing which acts as an evaporative condenser as explained above; and, phase three is the condensing surface of the extended end bends 58 of condenser 55. Condenser cooling air enters the air conditioner through duct collar which may be connected by a duct to outdoors air. The cooling air inlet duct is defined on four sides by the cabinet back panel assembly, a portion of chassis side panel l2, the vertical portion of partition l4, and the duct partition 43. At the top this duct is closed by chassis member 30, and at its bottom this cooling air inlet duct is open and in direct communication with the fin tube portion of condenser 55. Condenser header plates '56 and 57 and the cabinet front panel 31 confine the incoming condenser air to flowing through th fin tube section of condenser 55, from which it passes downward flowing over the compressor 55, over the blower motor 64 and into the blower housing 25.

The condenser air discharge duct from the blower housing 20 is defined on its four sides by chassis side plate l3, the cabinet back panel assembly, a portion of partition [4, and duct partition 43 together with condenser header plate 51 as one side. The top of the discharge duct is a portion of chassis member 30, and the outlet of the duct is through duct collar 5| in th cabinet back panel assembly.

Centrifugal blower wheel 63 draws condenser cooling air into the air conditioner through the condenser air inlet duct above, described, thence through the fin tube portion of the condenser 55, over and around the compressor 65 and the blower motor 64 over bottom pan l5 and into the blower housing 25. Then blower wheel 63 discharges the cooling air into the blower housing 20 where the air evaporates condensate delivered through conduit and absorbs heat from the refrigerant in serpentine tube 50. The cooling air then passes from the blower housing 20 at high velocity over the extended end bends 58 of the condenser 55 and into the condenser air .outlet bodied in blower Zihahd second through the con-- denser 55. The condenser cooling air flows first through the fin tube section of condenser 55 and second through the. evaporative'condenser embodied in blower 20. The combination of these two condensers in counterflow heat exchange re.

lation provides very eflicient condensing and low head pressures'in invention.

When the cooling air passes through the fin tube section of condenser 55 it is heated several degrees by the absorption of heat from the condenser 55. When this air then passes through theblower housing 20 where it evaporates condensate, the evaporation of the condensate absorbs heat from the air and cools it in the" evaporation process. The condenser air that is discharged by the blower over the condenser end bends 58 is therefore cooler than it is when it leaves the fin' tube section of the condenser 55. This'intercooling of thecondenser air. between the fin tube section and the extended end bends 58 adds new condenser efiiciency. to air ing this invention.

The structure disclosed in this specification is new to the art and it accomplishes a number of advantages over the console type air conditioners now known to the art. It accomplishesthe nine. (9) valuable objectives enumerated in the first part of. this specification. This invention has produced a small, compact, simple air conditioner structure of high operating efficiency that is well adapted to quantity production at low cost.

It is understood that this invention is not to be restricted to' the exact types of parts and the particular arrangement shown in the drawings since these may be modified under the teachings of thisspecification and will then come within the scope of the appended claims without departing from the scope and spirit of this invention.

Having thus described and explained my invention, I claimf conditioners embody- 1. A console air conditioner comprising a chassis, a condensing'unit and an air cooling evaporator. unit within said chassis, an L section side panel assembled to each side of said chassis symmetrically with its foot section covering a front corner portion'of'the chassis and being adapted to retain a sideof a front panel, a front panel removably retained atthe front of said chassis by said foot sections of said side panels, and a top panel secured to the top of said chassis.

-2. -A console air conditioner comprising a chassis,-a cabinet enclosing said chassis, a condensing unit and an air cooling evaporator unit within said chassis, said cabinet including an L section side panel assembled to each side of said chassis symmetrically with its .foot section covering a. front corner portion of the chassis and being adapted to retain a side of a cabinet front panel, said side panels being conterminous with and firmly secured to the outside front corner portions and sides of said chassis, a front panel removably retained at the front of said chassis by the air conditioner of this aeoncoo 1 1%. said foot sections: or: said sideananelsiand; a ton, panel secured to; the; tonirears portion: of Said chassis.

3: An air cooled: air: conditionen comprisin a. chassis, a cabinet enclosinesaidzxchassis, said: chassis comprising: tworv vertical channel; side: members joined: with a; bottom panel; and am. Ll. shaped: partition as: transverse. structural. mom:- bers and a. duct. partition: adjoining said. L) shaped partition; said-1 L.. shaped? partition; ranged in conjunctiomwith;saidrichassisz cabinet; and: duct: partition; tordelineate: an: evaporator: chamber, a; condensing: umt'; chamber and: two; cooling airducts; an airccoolingrevaporatonmiiti said evaporator: chamber, and: an. air cooled: condensingv unit; in; said-condensing: uniir chameber;

41 An.- airxcoolesb air; conditionerscomprisingza: cabinet constructed: with arrears panel; assembly;.. an air cooling evaporator unit and an air; cooled; condensing; unit within. cabinets. two; vertical: cooling air' ducts; thdupper: roan-portion: of": said: chassis defined: in: partzbyrsaid reanpanei assembly and: ariangedin; communication; with;- said? condensing umt; said; roan panel: assembly comprising a: horizontallm tongue and grooved: wood: frame having two:openings inregistenwith; said. two air ducts. and". a. plurality of horizon-' tally" tongue and; grooved: boards or: different:

widths; adapted for" interchangeable: assembly? with:.said wood fr'ameior: selectively positioning? said wood: frameverticallyrim said; rear cabinet? panel;

5.. An air cooled;- air; conditioner.- comprising a cabinet constructed with a reartpanelassembly;

an l-;. shaped partitionwithin" said".cabinei'r;v an air duct partition adjoiningsaid: L. shapedtpan tition, said L shaped partition;- arranged: in con-- junction with said: cabinet and", duct: partition to. delineate an evaporator chamber;: a condensing unit chamber, andtwmcoolmgrain ductsanzair. cooling-evaporator unitrin: said: evaporatonchamie bar; and an air cooled." condensing: unit in said condensing unit chamber-in communication with said. two cooling: air ducts,- said. rearipanel assemblyt comprising a. horizontally: tongue and grooved wood frame having: twoopenings-. in; communicating: register with; said? two air ducts; and. a plurality of? horizontally tongue: and.

grooved boards: of." diilerent: widths. adapted" for."

interchangeable: assembly with: said wood. frame adapted for selectively positioning? said wood frame vertically in said rear cabinet: panel as sembly;

6;. An: air cooled air: conditioner comprising: an: enclosing. cabinet, am inlet opening and. an: air outlet opening: for: condenser cooling; air: in: said. cabinet,. an: air" cooling evaporatorunit within said cabinet, at condensing unit within said: cabinet in communication withsaid airinlet opening comprising: a. fintu-becondenser; a compressor, andaa blower arranged to draw cooling air in. se uence through said cabinet" air=inlet opening, through said ifintube condenser, a portionover-said compressor, and finally: all of the: cooling air intothe, inlet ofsaidblower, a duct establishing communication between the discharge outlet of saidiblower' and the said cabinet outlet openings. and extended; end bonds of the 12 tubes... at one: end. of: said. finztube; condenser; exe tendingaintosaid.duct-andsubstantiallyacrossits width;

7'; An. air: cooled: air; conditioner comprising an. enclosing: cabinet,v an air: inlet opening and. an airoutlet opening-for. condenser cooling airrin saidcabinet, anair cooling evaporator unit with: in said cabinet, a condensing unit within said cabinet in. communication with said airinlet opening comprising-a fin. tube..- condenser, a-compressor, and a blowerarranged to draw coolin air in sequence thronghsaid.v cabinet air; inlet opening, throughsaidfin'.tubecondenscr, a portion over said compressonandfinally all oirthe cooling air into. theeinletof: said? blower; a; duct establishing communication between the dis! charge outlet. of said blower and the said cabinet outlet opening",v and extended end bends of: the tubeswatyoner end of said fin bllbQOOndGIlSBPifiX tending intosaid duct-and substantially across-its width, said fin. tube; condenser being disposed horizontally within said. cabinet: and constructed with aface areasubstantially equal to thezim ternal horizontal cross sectional area of said;

. cabinetso that the-walls ofzsaid cabinet; sen/etc retainand direct thesflow ofcooling. air throughsaid fin tube; condenser;

8. Anaircooled air'conditioner comprising:an enclosing cabinet, a condenser cooling airinlet opening-and outlet: opening: in said cabinet", an air: cooling evaporator unit' in said: cabinet; an air cooled condensing unit. within said. cabinet. in communication with; air inlet" opening; said; condensing. unit? comprising" a fin tube. cone denser; a; compressor; and: a; centrifugal blower arranged: to: draw condenser cooling air in; se;-' quence through saidcabinet air'in-let opening,- throughsaidfin; tube condenser, a part over said: compressor;. and=finall3oal1iofrthe cooling airrintov the inlet: opening'roiisaid: blower; a serpentine refrigerant conduit? metallically fused. to. the. scroll. of said? blower and: arranged to establish fluid; communication between; the discharge out let: of: said; compressor and? the refrigerant: inlet tube; of? said fin; tube condenser; conduit: means: for delivering. condensed: Water; vapor-from. said, evaporator unit": to; the; inside of. said; blower, a duct: establishing" communication between; the discharge; outlet of" said: blower: and saidcabinet outlet opening; and: extendedi end bends of the: tubesatone: end of saidn tube-Lcondenser: cit-- tending into said duct and substantiallyacross. itswidtln ALLEN TRASK.

References Gited then-lo. of. thispatent- UNITED STATES PATENTS