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Oct. 4, 1938. A. s. LOCKE 2,132,372 AIR CONDITIONING APPARATUS ' Filed April 27, 1934v 5 Sheets-Sheet 1 Ó __' l Fulmummunmll@ #i @Hummm mnlwmm~~ ‘hummm ¢ mmm@ Oct. 4, 1938. A. s. LoçKE 2,132,372 AIR CONDITIONING APPARATUS Filed April'2‘7, 1954 5 Sheets-Sheet 2 INV ENTOR A . 5. /_ Oc/fe Oct. 4, 1938. A. s. LocKE 2,132,372 AIR CONDITIONING APPARATUS Filed April 27, >19254 5 Sheets-Sheet 3 @3F36 52 7 INVENTOR Á. 5. LOC/fe Oct. 4, 1938. 2,132,372 A. s. LocKr: AIR CÓNDITIONING APPARATUS Filed April 27, 1954 5 Sheets-Shes?l 4 « B O5/ f INVENTOR ASÁoc/fe , ,l A TORNEY 1 Oct. 4, 1938. l . A. s, LQCkE 2,132,372 AIR CONDITIONING APPARATUS Filed April 27, 1934 5 Sheets-Sheet 5 2,132,372 Patented Oct. 4, 1938 UNITED STATES PATENT OFFICE 2,132,372 AIB CONDITIONING APPARATUS Arthur S. Locke, Philadelphia, Pa., assignor to Baldwin-Southwark Corporation, a corporation of Delaware Application April 27, 1934, Serial N0. 722,714 15 Claims. (Cl. 675-129) This invention relates generally to self-con tained air conditioning units for homes, oiiices or other enclosures, and more particularly to an im proved combination and construction of re 5 frigerating elements such as a compressor, con denser and evaporator, and means for circulating outside air over the condenser for cooling the same and for circulating room air over the evaporator. 10 A great many combinations havey heretofore been proposed for air conditioning apparatus of the type especially adapted to be located in a room to be cooled, but such combinations have either required a relatively large amount of space 15 for a given cooling capacity or have been com paratively expensive in manufacture. It is de sirable to have a unit of relatively large air cool ing capacity consistent with minimum space re quirements, to have a unit that is economical in manufacture both as to its component parts and their assembly, that is efficient in operation, and that is adapted to be easily installed and readily enclosed within a cabinet of attractive appear ance. It is one object of my invention to provide an improved self-contained air conditioning unit wherein the compressor, condenser and evapo rator are so cooperatively arranged as to require minimum space consistent with efficient opera 30 tion and economical manufacture of the com ponent parts and their assembly. A further and more specific object is to accom plish the foregoing desirable results by providing three parallel vertical compartments disposed side 35 by side whereby outside air ñows into one of said compartments and out through another in a rela, tively simple path while the room air is circulated in a substantially straight path from the blower over the evaporator. 40 A Another object is to provide an improved com bination of compartments so arranged that the compressor, condenser and condenser air cir culating means may be totally enclosed in two ad jacent compartments by a soundproof housing 45 without in any Way requiring excessive space or of restricting in any way the eiilciency of air flow over the compressor and condenser. Another ob ject in this respect is to have the evaporator dis posed in a third compartment in a substantially 50 exposed condition, but so constructed that a fan motor may effectively circulate room air over the evaporator. A further object is to provide improved con denser and evaporator units that are relatively 55 elongated in the direction of air ñow thereovei‘ whereby the air passes over these complementary heat exchange elements at a relatively high ve locity thereby increasing not only the heat trans fer between the elements and air but also creating a more positive air motion or circulation within 5 a room so as to insure uniform cooling thereof. A more specific object of the invention is to provide improved self-supporting and self-duct forming condenser and evaporator units, this being specifically accomplished by having their walls elongated or suitably extended to form standards or supporting end plates adapted to rest directly upon a base thereby eliminating the necessity of any supporting frames while at the same time permitting the end plates to define air 15 passage walls. A still> further object is to provide condenser and evaporator units whereby their end walls function not only as supporting standards but also perform the `additional function of forming part of the fan housing. It will of course be under stood that the condenser and evaporator may have their functions interchanged to permit the unit to operate as a heater instead of a cooler, this mode of operation and the necessary revers 25 ing mechanism being well known. Another object is to provide an improved ar rangement of compressorand fan motor to insure not only minimum space requirements but also minimum noise in the room together with efficient air cooling of the compressor and fan motor by the iiow of the outside air through the unit. Other objects relate to improved means for stream-lining the condenser or evaporator tubes, to an improved manner of having the return bends 35 of the condenser or evaporator tubes extend through the supporting end sheets, and to pro ‘ vide an improved pumping means for disposing of condensate with a relatively simple but novel driving mechanism between the fan and pump, this driving mechanism preferably employing an oscillating device such as is normally used for desk fans. Other objects and advantages will be more ap parent to those skilled in the art »from the follow ing description of the accompanying drawings in which: Fig. l is a vertical sectional view of my improved unit: 5o Fig. 2 is a plan view of Fig. 1 with the top thereof removed;A Fig. 3 is a perspective of one of the heat ex change elements, namely, the evaporator, show ing the manner in which it is self-contained both 2 2,132,372 as to its mode of support and as functioning to guide the air flow therethrough; Fig. 4 is a perspective similar to Fig. 3 but showing the condenser together with its self-con tained supporting and air passage features and showing especially the manner in which the fan scroll is associated with the supporting extension of the end plates, this latter feature also being applicable to an evaporator in case a similar type 10 of fan is employed therewith; Fig. 5 is an enlarged sectional view of a pump particularly adapted to be driven by the air cir culating motor disposed either on a horizontal 15 or vertical axis; Fig. 6 is a fragmentary vertical sectional view with a modified arrangement of fans for the room air and outside air; Fig. 'I is a perspective of one form of my im proved condenser embodying improved stream 20 lining for the refrigerant tubes and embodying improved means for turning the air flow through 90° to discharge the same outwardly, these fea tures providing not only less resistance to the air flow but also increasing the heat transfer be tween the tubes and fins. The stream-lining feature is also employed in the evaporator, the air turning means being omitted in this case. Fig. 8 is an enlarged perspective of a portion of a ñn with one form of stream-lining for the tubes; 80 Fig. 9 is a sectional plan view showing a series of fins and the manner in which the stream-line flanges of one fin cooperate with the adjacent fin to provide a uniform stream-line effect throughout the length of each tube, this section being substantially on the line 9--9 of Fig. 8; Fig. 10 is a perspective of a preferred form of tube, this having a stream-lined shape so as to obtain’various advantages in addition to less re sistance to the air flow; Fig. 11 is an enlarged fragmentary perspective of condenser fins showing air-turning baiiles thereof; Fig. 12 is a perspective of the upper portion of the adjacent sides of the condenser and evap orator showing a modified arrangement for heat and sound insulating the condenser chamber; Fig. 13 is a diagrammatic elevational view of a modified condensate disposal means utilizing an ejector communicating with the base sump and actuated by air supplied directly from the fan casing or passage; Fig. 14 is a sectional view of a modified tube of elliptical formation. In the illustrated embodiments of my inven 55 tion which are shown herein merely for the pur pose of disclosing certain specific forms among possible others that the invention might take, I have provided a suitable and preferably pressed ‘ sheet metal base I having a sump-portion 2 and marginal flanges 3. A motor-compressor unit generally indicated at 4 is preferably, but not necessarily, of the vertical axis hermetically sealed piston and cylinder type. This compres sor unit and a fan motor 5 are disposed in -su 65 perimposed relation preferably with the motor compressor unit supported above the fan motor as by any suitable brackets 6 extending up from base I. A pair of complementary heat exchange ele 70 ments such as a condenser 9 and evaporator III are vertically disposed in sidewise alignment with the end compartment in which the motor-com pressor is disposed. In order to obtain the utmost in simplicity of arrangement together with economical manu facture while at the same time maintaining the proper passage walls by which outside air flows into one compartment and out through another separately from the flow of room air through the ' third compartment, I provide condenser 9 so that it inherently performs a multiplicity of func tions such as forming its own supporting stand ards, partially forms its own fan housing, conduit walls and walls for the compressor and condenser compartments. This is accomplished as shown in Fig. 4 by having a vertical condenser whose end plates or sheets II and II’ continue down wardly at I3 and I4, as either integral or sepa rately secured pieces, to be supported on base I. Supported between the extensions I3 and I3’ is preferably a fan scroll I5, the edges of this scroll being welded or otherwise suitably secured to the >inner faces of said extensions. As a result, the extensions are not only reinforced by the fan scroll but also function as part of the fan casing. 20 A circular inlet I6 is formed in the extension I3 while a fan rotor Il is directly secured to the armature shaft of fan motor 5. 'I’he end sheets II and II’ preferably have a small flange I8 and I 8’ extending for the full length thereof to 25 strengthen the sheets. As a result of the simplicity of the heat ex change element as above described, it is only nec essary in assembling a unit to place the heat ex change element on base I and suitably secure the 30 same thereto as by welding or bolting. There is no need of forming separate ducts, walls, parti tions or the like because the same are inherently formed merely by the positioning of the element, - in this case the condenser. 85 'I'he compressor and condenser are entirely en closed by a suitable enclosure generally indicated at I9 having four sides and a top. The two end sides I9a, IBb, front side I9c and top IBd -are entirely solid while the rear side I9e has an inlet 40 opening I9g and an outlet opening I9h. The outlet I9h is in alignment with the condenser 9 so that the end wall I I thereof forms a natural partition between the inlet and outlets |99 and I 9h. 'I'hese inlets and outlets are directly con 45 nected through a suitable duct with a suitable opening thereby to permit outside air to be drawn inwardly through opening |99 and down wardly over motor-compressor unit 4 and motor 5 and thence inwardly through inlet I6 and up 50 wardly over condenser 4 to be discharged to the outside through opening I9h. 'I‘he evaporator I0, shown particularly in Figs. l and 3, is constructed similarly to condenser I in that end walls or sheets 20 and 20' have ex 55 tensions 22 and 23 secured to base I. A fan scroll 24 is disposed between and supported in a manner similar to scroll I5 by one or both of the end sheets 20 and 20’ depending upon the axial length of the scroll as determined by the fan ca 60 pacity. A room air fan rotor 25 is mounted on a common shaft with rotor I1 for rotation by motor 5, the end of the shaft being journalled in a bearing bracket 26 secured to base I. Room air flows inwardly preferably beneath the lower edge 65 21 disposed at the end, front and back of a suit able cabinet C loosely set Vover the unit, thence flows inwardly through preferably opposed inlet openings 28 formed in the extensions 22 and 23, although if desired only one of either of said 70 inlets may be used. The air is propelled by blower 25 upwardly over evaporator III and thence discharged verticallyinto the room through a cabinet opening C'. Itis thus seen that this ar rangement results in an extremely simple path 75 8,182,879 of room air flow, as indicated by arrow 29, -it being noted that from the fan to the point of discharge into the room a- vertical straight ñow is created. Hence a high degree of efficiency re~ sults in the flow conditions in addition to a sim ple but effective structure. Suitable vertical sheet metal plates 29a and 29h (Fig. 2) secured to flanges 2| and 2|', provide the necessary front and back walls for completing the -vertical air passage through the evaporator> and ’ milarly‘for the condenser if so desired. l __ . ' , ` 'I'he evaporator is spaced from the; condenser by a distance equal to the thickness 'of lthesound enclosure. It is by such a simple relation of 15 parts that the enclosure forms not only a very effective sound enclosure .means but also com pletes the remaining passage walls for the con denser and compressor compartments. ' To discharge water that condenses on'evapora tor I0 during flow of room air thereover,l I have provided a reciprocating piston type pump gen erally indicated at 30 driven from the end of the armature shaft of motor 5 through a set of- suit able worm reduction gears diagrammatically in 3 grammatically indicated by dotted lines 40. Figs. 1 and 2. The arrangement of the compressor and condenser compartments is particularly adapted for the location oi a filter as described. In the modification shown in Fig. 6, the room air fan 60 is shown as of the vertical axis pro peller type suitably supported by the evaporator end sheets through brackets 5|. Room air flows inwardly beneath the cabinet edges as previ ously described and thence inwardly between the 10 evaporator end sheets at their lowermost por tion and also, if desired, inwardly through an opening 52 formed in the end sheet. The out side air fan 53 for the condenser is separately driven by a motor 54 located in the compressor 15 compartment. The fan scroll construction is the same as previously described. 'I'he pump 30 and operating mechanism therefor are the same as previously described for the preferred modifica tion, the pump however, being turned in the re 20 spective modiñcations to suit either the vertical or horizontal axis motors. In Figs. '7, 8 and 10 I have provided improved means for directing the air ñow over the con denser and evaporator tubes and of turning the 25 A crankpin 32 is suitably con nected to the outer end of wormvgear shaft 33 - vertical ñow of condenser air at right angles to 25 dicated at 3|. discharge the same through lateral outlet |971», .Fig. 1. I have provided improved stream-lined in connection with another modification. The tubes, this being effected for tubes of circular cross-section, Fig. 8, by bending in narrow flanges 30 30 cylinder is located in the base sump! end_is supported for oscillationas Aat 36L‘ A suitable 6| , and 6|' in the form of a triangle immediately inlet check valve 31 and outlet check valve 38 above the >circular tube openings or collar flanges permit condensate accumulated, in sump' 2 to be .66. Fianges 6| and 6|' will terminate just short drawn into the pump cylinder 35 anddischarged of the circular pipe 62 so that a portion of the through a pipe 39 into the path of outside room >air may circulate around the upper half of the 35 air preferably by being discharged through jet pipe while the main body of air is efllciently openings (Fig. 1) in a pipe 40 over the top of guidedgby the stream-line flanges 6| and 6|’ condenser 9, and also over the top of evaporator Without causing excessive eddy currents and otherwise‘retarding the flow. These stream-line I0 if desired. . Again referring to Fig. 1, suitable refrigerant flanges are formed in each pipe iin 64 for coop 40 expansion means are diagrammatically indicated eration With each of the pipe openings therein, at 42 connected as by pipes 43 and 44 to the heat whereby when these fins are successively posi exchange elements 9 and I0. As it is desired to tioned against each other as shown in Fig. 9, the and reciprocates a plunger 34 in aiêcylinder 35. The pump cylinder is shown in‘detail in. Fig. 5 maintain the expansion means 42 in a cool zone and also to provide ample space for its location, 45 it is disposed wholly or partly Within the evap orator compartment I0, although as shown in Fig. 1 an opening 44a is provided in the enclosure wall - to receive the expansion means. If desired, this opening may be suitably closed around one side 50 of the-expansion means or this opening, if left open, may be used to admit to the flow of room air, fresh outside air through an opening 44h formed in the condenser end sheet at any suit able point such as adjacent fan |1 or higher if 55 desired. - As a result of my improved arrangement, it is seen that the motor-compressor unit and fan motor are disposed in one vertical compartment 60 generally indicated at 45, the condenser 9 and fan I1 arev disposed in the second vertical com „ partment 46 while the evaporator I0 and fan 25 are disposed in the third vertical compartment 41. It is also seen that the return bends 48 of 65 the condenser and evaporator are disposed out side of the condenser and evaporator end sheets. This permits, in connection with the condenser, additional pipe area to be located directly within the path of outside air, as the return bends pro 70 ject into the compressor compartment and are therefore subject to the air flow therethrough. This result is accomplished even though a curved or fiat air filter of suitable construction is ver tically disposed to the side of the condenser 75 and in front of the blower inlet I6 as dia stream-line flanges 6| and 6|' will engage the opposed face of the adjacent iin in alignment 45. with the stream-line flanges 6| and 6I' on the other side of said adjacent ñn. Hence the com plete assembly of fins over the pipes will result in a uniform stream-lining eiïect for the full length of the pipes. In the case of the evaporator I0, these stream lining flanges will extend vertically throughout the length of the evaporator whereas with the condenser I0 the stream-line flanges near the top will be increasingly turned toward the horizontal 55 as diagrammatically shown in principle in Fig. '1, thereby to gradually and positively turn the high velocity air flow through a right angle with mini mum eddy currents and loss of efllciency. The passage leading from outlet opening |9h is pref erably curved at the corner 61 and gradually in creases in cross-sectional area preferably by a downwardly sloping bottom wall 69, the other walls remaining horizontal or sloping outwardly. In the form of refrigerant tubes shown in Fig. l0, I am able to accomplish not only stream lined tubes but also an actual increase of heat transfer tube area together with the further de sirable feature of increasing the surface contact between the tube and the heat radiating fin. As 70 shown in Fig. 10, the portion 10 of the tube ex tending through the series of ñns 1| has either an elliptical or tapered formation to provide an in herently stream-lined tube. The direction of air ñow is of course upward. This tube may be 4 2, 1 82,872 rolled to a preferably tapered form from an ini tially round piece of tube or it may be otherwise originally formed as a tapered tube. However, to construct a condenser or evaporator employing my improved tube, I provide a series of fins 1| similar to the fins for the other forms of con densers, and each finis provided with openings to receive a tube. Each of the openings is prefer ably provided with a flange 12 for contacting with The edge of this flange abuts against the adjacent ñn to serve 10 the surface of the tapered tube 10. as a spacer and also to perform the additional desirable function of reinforcing the relatively straight tapered sides of the tube, thereby pre venting a relatively high pressure, of say 200 pounds or thereabouts, bulging the tube out of shape. However, due to the straight sides, the high pressure will tend to force the sides of the tube into more intimate contact with the flanges 20 12, and it is preferable that after the fins and tubes, together with their return bends, are en tirely assembled and ready to be dipped for gal vanizing or other similar operation, they should be so dipped while the tubes are under pressure, 25 thereby insuring permanent retention of the close huid-pressed contact between the tube and flange 12. As is seen from Figs. 3 and 4, the usual return bends 48 lie in an inclined plane so as to give a staggered effect between the tubes. 30 To accomplish this staggered effect in a simple and yet effective manner, while at the same time insuring that the tapered tube will extend ver tically as indicated at 14 in Fig. '7 and will ex tend in the direction of outfiow such as at 15, I 35 form the return bends 48 so they have a circular cross-section, thereby permitting the bend to be bent in an inclined direction without imposing any undue stress on the tapered tube when lying in the vertical direction. This combination of 40 tapered tubes with return bends of circular cross section may be most effectively obtained by first taking a straight piece of circular tubing, then rolling the tube to a tapered formation starting near the center of the length of the tube thereby 45 leaving a short portion of the tube at its middle of circular section. The tube will then be bent into a U shape with the circular cross-section forming the return bend 48. This U shape tube will then as is customary with this type of heat 50 exchange element be inserted through two groups of aligned openings in the fins. After all of the U shape tubes have been inserted through the fins, the free ends of the tapered tubes will now be preferably reformed to a cylindrical cross-sec 55 tion for a short distance from their ends. This will permit return bends of cylindrical cross-sec tion such as diagrammatically indicated in Fig. 1 at 11 to be easily soldered or otherwise hermeti cally secured to the tubes so as to effect a series 60 connection thereof as shown in Fig. 1. While tapered tubes of the foregoing type will insure minimum resistance to the air iiow over the heat exchange elements, yet in connection with the condenser I provide improved means for 65 obtaining still greater eñiciency of flow and to this end it will be noted in Fig. 7 that a series of bailles 18 are formed on the surface of the fin. These bafiles preferably are of the same radius and due to the vertical distance of out 70 let |871. being less than the depth of the con denser, the baffles 18 will form passageways which contract toward the downstream end of the baf ñes, thereby obtaining more efficient turning of the flow than if the baille passages were merely 75 of uniform cross-sectional area or of increasing cross-sectional area as the discharge end is ap preached. To form the bailles in a moet simple and yet effective manner, it will be noted from Fig. 11 that the baille for each fin 1| is formed by cutting the originally fiat iin along arcuate lines such as 18 and then pressing the baiiies 18 out wardly at right angles to the face of the un. Each fin is formed with such a set of baiiies so that when they are placed together the baiiies of the successive fins will not only be in alignment as shown in Fig. 11 but will also contact with the adjacent face of the next successive ñn, thereby providing a continuous baille throughout the width of the condenser. The open spaces formed adjacent the bames due to being cut along lines 18 will not affect the flow as the pressure in the various ñn passages is equal. In the modification shown in Fig. 12 I have provided outwardly extending end ñanges 80 and 8| for the condenser and evaporator respectively whereby these flanges may be placed against each other, thereby providing a chamber 82 in which the return bends and headers 83 and 8l, if de~ sired, are disposed. The chamber 82v is then filled with suitable sound and heat insulating material 84 preferably in powdered form. This arrangement results in additional compactness of the unit due to eliminating the enclosure member |82; of Fig. 1. In the modification of Fig. 13 I have provided 15 20 25 30 an improved condensate disposal means com prising a vertical pipe 81 having a Venturi throat 88 which is supplied with air from any suitable point of the condenser air passage, such a point being diagrammatically shown by a pipe 88 ex as' tending into the discharge of the fan casing I8. If it is desired to increase the flow through pipe 89, a small deñector may be formed on the inside of the scroll i5 adjacent the pipe inlet 88. An ejector tube 98 projects preferably vertically into 40 cooperating relation with evaporator passage 88. 'I'he lower end of ejector tube 98 has preferably a bell mouth disposed slightly above the bottom of base sump 2. Any condensate which collects in the sump will be drawn in by the action of 45 the ejector and carried directly upwardly through pipe 81 to a horizontal discharge pipe 8| over lying the top of the condenser. Suitable ports in this pipe may direct the water downwardly over the condenser to assist in cooling the same 50 or the ports may direct the water horizontally in the direction of outfiowing air. Also if de sired, the horizontal pipe may extend through the condenser ñns near the center thereof so that a greater portion of the condenser tubes and fins 55 will have a wetted surface. If it is desired to augment the upward flow of condensate through p-ipe 81, one or more booster ejectors 82 may be disposed within pipe 81. 'I‘hese booster ejectors may be supplied with air through a pipe such as 60 93 connected into the condenser passage prefer ably just above the fan. In each case where either the pump or ejector arrangement has been shown in cooperation with the base sump 2, it will be understood that moisture which condenses 65 on evaporator I8 will drip down into the fan scroll 24 and thence through suitable openings, Fig. 1, 94 therein to flow into the base sump. The water therein may readily flow to the pump or ejector by the provision of suitable small open 70 ings such as 85 in the partition |8b or similar holes in any other walls that might obstruct the flow of water to the pump. As shown in Fig. i, the condensate discharge pipe 40 and likewise for the pipe 9| of Fig. 14 may extend over the 5 9,182,879 evaporator I0 as well as over the condenser 0. thereby allowing condensate to be pumped over each of these elements to maintain a uniform wetted surface of each but with the assurance I claim: l. An air conditioning unit comprising, in com bination, a base, means forming three parallel that condensate will be efficiently disposed of vertical compartments extending upwardly from said base, a refrigerating system having opera due to the fact that some of the condensate dis charged over the condenser will be carried to the outside atmosphere in the air flow. From the foregoing disclosure of the various partments, air circulating means communicating with said condenser and evaporator compart 10 modifications, it is believed that their operation tively connected compressor, condenser and evap orator elements disposed respectively in said com ments for circulating outside air and room air l0 is apparent but briefly the compressor unit 4, con respectively therethrough, and means whereby denser 9 and evaporator I Il are connected to form outside air flows in opposite directions over said compressor and condenser, the air circulating a suitable compressor-condenser-evaporator cir cuit and the condenser is cooled by outside air flowing inwardly through a suitable Window open ing, thence through opening I9g in the back panel I9e and thence downwardly along the iiow line 99 into inlet I6 to be propelled upwardly over condenser 9 by blower I1 and discharged to the 20 outside through opening I9h. These various ele ments are entirely disposed within two vertical compartments disposed side by side and totally -enclosed within enclosure I9. The room air is circulated upwardly by fan 25 which draws air 25 in through or under a suitable cabinet enclosing the complete unit, the air thence flowing inwardly through inlets 28 and over evaporator I0 to cool the room air after which it is discharged ver tically and with considerable velocity into the 30 room. Condensate from the evaporator I0 ac cumulates in sump 2 and is discharged by pump 30 through pipe 39 from which it flows through horizontal pipe 40 either directly into the out going flow of air or over the condenser to assist in cooling the same. The unit may be used for a heater as well as a cooler. Assuming that heat exchange element I0 is operating as an evapo rator (cooler operation), the condensate dis charged thereon from pipe 40 would merely ilow 40 down over the iin surfaces of the evaporator and accumulate in sump 2 to be discharged upwardly again over both the condenser and evaporator. Due to the fact that the condensate which flows over the condenser would be carried to the out--v 45 side, it is seen that a proportionate part of any condensate ñowing over the evaporator would be continuously discharged to the outside. When the unit is reversed so that heat exchange element means including a motor supported by said base beneath said compressor and a fan driven by said 15 motor disposed .in the lowermost portion of said. condenser compartment for discharging air ver tically, - 2. An air conditioning unit comprising, in com bination, a casing having a substantially flat 20v base, partition means cooperating with said cas ing to divide the interior thereof into parallel compartments extending from the base to the top of the casing, an evaporator in one of said com partments, refrigerant liquefying mechanism con 25 nected to said evaporator and comprising a motor, a compressor and a condenser arranged in the remainder of said compartments, an outside air inlet and outlet disposed at the upper portion of said casing in substantially adjacent relation to 30 each other for conducting outside condenser cool ing air into the unit, said partition means form ing a passage connecting said inlet and said out let to bring the outside air into heat absorbing relation with said condenser, a blower disposed in 35 said condenser compartment for circulating said outside air inwardly of said inlet and over said condenser and outwardly through said outlet, and a blower in said compartment which contains the evaporator for circulating room air thereover. 3. An air conditioning unit comprising, in com bination, a casing having a substantially ñat base, partitiom means cooperating with said casing to divide the interior thereof into a plurality of com partments one of which extends vertically sub stantially from said base to the top of the cas ing at one end of the unit and another of which is located at the other end of the unit, an evap 9 functions as an evaporator and element I0 as a orator in said latter compartment, refrigerant liquefying mechanism connected to said evap 50 condenser (heater operation), then moisture from orator and comprising a motor, a compressor and the outside air condensing on heat exchange ele a condenser arranged in the remainder of said ment 9 will accumulate in sump 2 and be dis charged over condenser I0 to humidify the room compartments, an outside air inlet and outlet air. In this way the condensate will ñnally bel disposed at the upper portion of said casing in 55 disposed of on the condenser side even though a substantially adjacent relation to each other, said 55 portion of the condensate is discharged over the partition means forming a vertically extending heat exchange element now functioning as the passage located intermediate of said end com evaporator. It is also seen from the foregoing disclosure 60 that an extremely simple and eiîective means is provided for supporting the condenser and evap orator, for forming the air passages and compart ment walls simply by assembling the condenser and evaporator units on base I whereupon these 05 various features are automatically created, for effectively housing the compressor and condenser, and for efliciently obtaining maximum heat trans fer area of the refrigerant tubes and insuring minimum resistance to the air ñow thereover. 70 It will ofcourse be understood that various changes in detalls of construction and arrange ment of parts may be made by those skilled in the art without departing from the spirit of the in 75 vention as set forth in the appended claims. partments and extending substantially from the base to the top of the casing for connecting said inlet and said outlet to bring the outside air into heat absorbing relation with said condenser, a blower disposed in said condenser compartment for circulating outside air inwardly of said inlet and through said intermediate vertical passage to said outlet, and a blower in said evaporator compartment for circulating room air thereover. 4. An air conditioning unit comprising, in com bination, a base, means forming three parallel vertical compartments extending upwardly from said base, a refrigerating system having opera 70 tively connected compressor, condenser and evap orator elements disposed respectively in said com partments, air circulating means communicating with said condenser and evaporator compart 75 6 2,132,2372 ments for circulating outside air and room air re spectively therethrough including a blower dis side air flows in opposite directions over said com pressor and condenser, and a propeller type fan posed inthe lowermost portion of said evaporator compartment for circulating room air vertically over the evaporator therein, and means whereby outside air flows in opposite directions over said for circulating/room air vertically over said evap compressor and condenser. y 5. An air conditioning unit comprising, in com bination, a base, means 'forming three parallel 10 vertical compartments extending upwardly from said base, a refrigerating system having opera tively connected compressor, condenser and evap orator elements disposed respectively in said com partments, air circulating means communicating 16 with said condenser and evaporator compart ments for circulating outside air and room air respectively therethrough, means whereby out side air flows in opposite directions over said compressor and condenser, and means cooperat 20 ing with the walls forming said compressor and condenser compartments for totally enclosing the compressor and condenser therein while said evaporator compartment is outside of said en closure. 25 6. An air conditioning unit comprising, in com orator. i' 10. An air conditioning unit comprising, in combination, a base, means forming three par allel vertical compartments extending upwardly from said base, a refrigerating system having op eratively connected compressor, condenser and evaporator elements disposed respectively in said 10 compartments, air circulating means communi cating with said condenser and` evaporator com partments for circulating outside air and room air respectively therethrough, means ,whereby outside air flows in opposite directions over said compressor and condenser, and the air circulating means includes a propeller type fan for circulat ing the room air vertically over said evaporator, and a pump driven by said room air fan for dis charging condensate to the outside air. 11. An air conditioning unit comprising, in combination, a base, means forming three parallel vertical compartments extending upwardly from said base, a refrigerating system having opera tively connected compressor, condenser and evap bination, a base having a sump, operatively con orator elements disposed respectively in said com nected condenser and evaporator elements dis posed over said base to discharge into said sump water condensed on the evaporator surface, partments, air circulating means communicating with said condenser and evaporator compart 30 means for circulating room air over one of said ments for circulating outside air and room air respectively therethrough, means whereby outside 30 elements and means for circulating outside air over the other element, and condensate disposal means including an air operated ejector disposed adjacent to said sump and means for conducting 35 ejected water into the path of outside air. pressor and condenser, and the air circulating means includes a propeller type fan for circu lating the room air vertically over said evaporator, 7. A self-contained air conditioning unit for charging condensate to the outside air, said base installation in a room adjacent a window or other suitable wall opening comprising, in combination, a compressor and motor therefor disposed at one 40 end of the unit, an evaporator disposed at the other end of the unit, means for circulating room air over said evaporator, a condenser, and means for circulating outside air over said condenser in cluding a blower located at an intermediate por 45 tion of said unit near the bottom thereof and walls forming a passage for outside air extend ing upwardly from said blower and disposed to one side of said motor and compressor. 8. A self-contained air conditioningl unit for 50 installation in a room adjacent a window or other suitable wall opening comprising, in combination, a compressor and motor therefor disposed at one end of the unit, an evaporator disposed at the other end of the unit, means for circulating room 55 air over said evaporator, a condenser, and means for circulating outside air over said condenser in cluding a blower located at an intermediate por tion of said unit near the bottom thereof and Walls forming a passage for outside air extending 60 upwardly from said blower and disposed to one side of said motor and compressor, said unit hav ing a lateral opening in its back side near the top portion thereof for allowing communication be tween said vertical passage and the outside air 65 through said window or wall opening. 9. An air conditioning unit comprising, in com bination, a base, means forming three parallel vertical compartments extending upwardly from said base, a refrigerating system having opera 70 tively connected compressor, condenser and evap orator elements disposed respectively in said com partments, air circulating means communicating with said condenser and evaporator compart ments for circulating outside air and room air 75 respectively therethrough, means whereby out air flows in opposite directions over said com and a pump driven by said room air fan for dis 35 having a recessed portion forming a sump into which condensate accumulates from said evap orator. 12. An air conditioning unit comprising, in 40 combination, a base, means forming three par allel vertical compartments extending upwardly from said base, a refrigerating system having op eratively connected compressor, condenser and evaporator elements disposed respectively in said 45 compartments, air circulating means communi eating with said condenser and evaporator com partments for circulating outside air and room air respectively therethrough, means whereby outside air flows in opposite directions over said " compressor and condenser, and the air circulating means includes a propeller type fan for circu lating the room air vertically over said evaporator, a pump driven by said room air fan for discharg ing condensate to the outside air, and fan oscil lating mechanism for driving said pump. 13. The combination set forth in claim 6 fur ther characterized in the provision of means whereby air from said outside air circulating means is supplied to the ejector at a point near 60 said sump. 14. A self-contained air conditioning unit for installation in a room adjacent a window or other suitable wall opening comprising, in combination, a compressor and motor therefor disposed at one end of the unit, an evaporator disposed at the other end of the unit, means for circulating room air over said evaporator, a condenser, and means for circulating outside air over said condenser in cluding a blower located at an intermediate por 70 tion of said unit near the bottom thereof, and walls forming passages for infiowing and out fiowing outside air, said passages having verti cally extending adjacent portions located between said compressor and evaporator and communi 75 2,189,872 eating respectively with the inlet and outlet of said blower, and said unit having a pair of lat eral openings in its back side near the top there of for allowing communication between the ver tical portions of said passages and the outside air through the window or wall opening, 15. A self-contained room cooler unit for in stallation in a room adjacent a window or other suitable wall opening comprising, in combination, an evaporator, means for circulating room air thereover, a condenser, means forming an air pas sage therefor having one portion extending ver 7 tically from the lower portion ot the unit and terminating in a lateral opening in the back side oi' the unit, a blower disposed at the lower por tion of said vertical passage. a motor disposed laterally of said passage for driving said blower, a compressor supported over the top of said motor, and means including said blower and said pas sage forming means for causing the air to ñow in one direction over said compressor and in the 10 opposite direction over said condenser. ARTHUR S. LOCKE.