Патент USA US2125727код для вставки
Aug. 2, 1938. M. KALISCHER ‘ 2,125,727 AIR CONDITIONING APPARATUS Fil’ed Dec. ‘'14, 1955 5 Sheets-Sheet 1 93 4 muz m mm. mm m, moN.m25zo3u 2HM mpv o INVENTOR “ MILTON KnuscHse 429k BY ATTOR EY ‘ Aug- 2, 1938- M. KALISCHER 2,125,727 AIR CONDITIONING’ APPARATUS Filed Dec. 14, 1933 3 Sheets-Sheet 2 s-mn-rma RELAY C NDENSER as s O 42 O MOTOR COMPR UNIT COOLING WATER COOLING WFITER ONDENSER Fla. 2 . FIG. 3. IWITNESSVES: (5' ‘ INVENTOR ‘ . MILTON KHLISCHER MW ATTO EY Aug. 2, 1938; M. KALISCHER 2,125,727 “AIR CONDITIONING APPARATUS Filed Dec. 14, 1933 3 Sheets-Sheet 5 fvlwr, .wv mv mm .. WITNESSES: 6. 76”, ow INVENTOR ‘ MILTON KFILI‘SCHER BY //v 1!? ATTOR; Y Patented Aug. 2, 1938 i ' . . 2,125,727 UNITED STATES PATENT OFFICE 2,125,727 AIR CONDITIONING APPARATUS Milton Kalischer, Spring?eld, Mass, assignor to Westinghouse Electric & Manufacturing Com pany, East Pittsburgh, Pa., a corporation of Pennsylvania 7 Application December 14, 1933, Serial No. 702,376 10 Claims. (Cl. 62—129) My invention relates to air conditioning apparatus, more particularly to a unit air conditioner of the self-contained type, that is, an air conclitioner including the refrigerant—liquefying means 5 as part of the unit, and it has for an object to provide improved apparatus of the character set forth. ' In accordance with my invention, I provide a ‘casing or cabinet containing a refrigerating unit, 10 including a compressor, a motor for driving the same, and a condenser, in ‘one compartment and posed in the diagonally-opposite corner. in Fig. 1, the coil l4 extends from a point adja cent the upper right hand corner to the lower vide a- water-cooled condenser, which is in the form of a double tube coil encompassing the motor~compressor unit and is preferably carried thereby. I may also provide a coil for cooling 20 the motor, said coil using the cooling water discharged from the condenser. The motor-compressor unit may be mounted within the casing on springs to absorb vibration. Fig. 1 is a vertical longitudinal sectional view 25 of the unit air conditioner; Figs. 2 and 3 are end views of the air conditioner, as seen from the left and the right, re- spectively, of Fig. 1; and Fig. 4 is a plan view of the refrigerating unit, 30 showing the motor compressor unit and the condenser. 40 45 ' The evaporator coil 14 is arranged obliquely in the chamber l3, one end thereof being disposed adjacent the corner of the walls containing the inlet and the outlet, and the other end being dis- 10 an air-cooling heat exchanger in another com— partment. Preferably, the compressor and an electric motor driving the same are enclosed in 15 a ?uid tight or hermetically sealed casing. I pro- ' 35 casing and disposed in the inlet opening it to‘ eiiect circulation of air inwardly through said opening. A vertical plate 20', disposed between the fan and the evaporator and in alignment with the axis of the fan, is provided to remove the 5 rotary movement imparted to the air by the fan. ' Referring now to the drawings more in detail, I show, at Ill, 8, unit air conditioner of the selfcontained type.’ The conditioner l0 includes an inner casing II, in which most'of the apparatus is mounted, and an outer casing“. The inner casing includes an upper chamber l3 containing the air treating apparatus, which in this case is an evaporator coil I4 for cooling the air, and a lower chamber l5 containing a refrigerating unit I6 which provides a supply of refrigerant for the coil H. The chambers l3 and I5 are separated by a partition I], which preferably includes a heat insulating material. Fiber board insulating material, such as “Celotex”, is well suited to this purpose, since it is also a sound-deadening material. Similar material may also be placed on the side and bottom walls of the lower cham‘, ber l5 for heat and noise insulation. . 50 The upper chamber 83 has an inlet opening l8 in one side thereof, preferably one of the narrow sides or-ends of the chamber. The chamber I3 is further formed with an outlet opening l9, preferably, as shown, in the upper wall thereof. A . spring mounted fan 20 is carried by the inner As seen left hand corner. The coil It includes tubes 2! extending lengthwise, of the coil and heat transfer 15 ?ns or plates 22 extending at right angles to the tubes and ?xed thereon in heat-exchanging con tact to provide extended heat-transfer surfaces. In this position of the coil I4, the ?ns 22 extend in a direction intermediate the horizontal direc tion in which the air enters through the inlet and the vertical direction in which the air leaves through the outlet. The ?ns 22 may also be de scribed as disposed roughly parallel to, or within a small angle of, a line extending from the center 25 of the inlet to the center of the outlet, or as dis posed approximately at right angles to a plane bisecting the angle between the walls having the inlet and outlet. It will also be noted that the lower edges of the ?ns extend obliquely across 30 the horizontal air stream coming from the inlet, in which position they are adapted to intercept the air. As seen in Fig. 1, the air is caused to flow from the inlet l8 horizontally to the left. As the air 35 strikes the lower edges of the fins, said ?ns, be cause of their angular position described above, cause the air to ?ow upwardly and somewhat to the left, thereby assisting in changing the direc tion of air ‘?ow from horizontal movement 40 through the inlet, to vertical movement through the outlet l9. A sheet metal member 23 attached to the inner casing ll serves to further change the direction of the air to vertical direction and to guide the same to the outlet l'9. In ?owing 45 in contact with the ?ns 22 and with the tubes 2|, the air gives up some of its heat and is cooled, and usually also dehumidi?ed. The outer casing is provided with an inlet' opening 23 and an outlet opening 24 arranged 50 substantially in registry with the inlet opening I8 and the outlet openirig i9 vof the inner casing, respectively. A ?lter 25 for cleaningthe air and a grille 26 are positioned in the outlettopening 24. The refrigerating unit l6 includes a motor 55 2 . 2,125,727 compressonunit 21 and a water cooled condenser 23. The motor compressor unit is preferably en- ' closed in a hermetically-sealed casing 29. In the present case, I have shown a motor com 5 pressor unit similar to that disclosed and claimed in the application of Wm. B. Anderson, S. N. 636,393, ?led October 5, 1932, now matured into Upon decrease in pressure, the closing move ment of the valve 36 is effected. The advantage of placing the valve controlling ?ow of cooling water at the discharge end is that the valve is subjected to the warmer temperature of the cool- 5 ing water, and hence the objection of condensa tion forming on the valve is avoided. Patent No. 2,012,704, issued-Aug. 27, 1935, and The casing of the motor compressor unit has assigned to the assigneeof the present applica attached thereto brackets 39 for supporting the same.- Each bracket 39 has end portions 40 of 10 inverted cup shape, in which helical compres sion springs 4| are mounted. These springs 4! 10 tion, which includes separate motors in the end portions of the casing of reduced diameter and separate compressors driven by the respective motors and disposed in the central‘wider por rest on cross members 42, which are attached to Since the detail construc- , vertical angle irons 43 of the inner casing Ii. The condenser 18 is carried by the motor com- 15 15 tion of the motor compressor unit is not involved tion of the casing 29. in this case further than pointed out above, it will not be further described herein. The va porized refrigerant to be ‘compressed is conveyed to the motor compressor unit through a conduit ' 20 3| and compressed refrigerant is discharged therefrom into a conduit 32. ' ' The condenser 28 comprises a double tube coil, as indicated on the drawings, which is helically wound about the end .portions of reduced diam 25 eter of the motor compressor casing. A ?tting 33 is provided at one end of the condenser. The pressor unit 21, in this case being held between straps 44 and 45, the former being ?xed on the end portions of the brackets 39. The evaporator I4 is supplied with liquid from the liquid receiver 34 through a conduit 46 and 20 expansion valve 41. Refrigerant ‘vaporized in the evaporator is returned to the motor com pressor unit through the conduit 3|. From the above description, it will be seen that I have provided a simple and compact arrange- 25 ment in which all of the apparatus for cooling conduit 32 is connected to the ?tting 33 to ad- r air is embodied in a single unit, which may be mit compressed-refrigerant to the condenser, said refrigerant being admitted to the annular . a portable unit if desired. ' The apparatus shown in this case’ effects cir 30 space between the inner tube 30 and the outer , culation, cooling and cleaning of the air, and is 30 tube 30'. The inner tube 30 contains cooling also known as a room cooler. It will be under water, the cooling water being discharged from stood that apparatus for effecting additional air- ' the condenser at the ?tting 33. The opposite end conditioning functions may be embodied therein of the double tube coil forming the condenser without departing from my invention. 35 28 is connected, as shown in Figs. 1 and 3, to a While I have shown my invention in but one 35 liquid receiver 34 carried by the inner casing form, it will be obvious to those skilled in the , ll. As shown particularly in Fig. 3, the outer art that it is not so limited, but is susceptible of tube 33’ is connected directly to thecasing form various changes and modi?cations, without de ing the liquid receiver, so that the condensed re parting from the spirit thereof, and I desire, 4 40 frigerant is admitted directly into the liquid re therefore, that only such limitations shall be 4!) ceiver. The inner tube 30 containing cooling placed thereupon as are imposed by the prior art water is extended through another opening in -or as are speci?cally set forth in the appended the liquid receiver, this arrangement'eiiminat claims. ‘ ing the necessity for an additional ?tting to What I claim is: 45. bring the inner tube out of the outer tube. The 1. A unit air conditioner comprising a casing 45 end of the inner tube projecting from the liquid having upper and lower compartments, an air receiver is connected ‘to a supply of cooling wa_+ cooling evaporator in the upper compartment, ter, this end of the coil being the inlet, end. The means for circulating air through said upper cooling water ?ows in the direction opposite to - compartment in heat exchange relation with said 50 the direction in which the refrigerant ?ows, evaporator, av motor-compressor unit disposed in 50 thereby providing a counter?ow arrangement as the lower compartment, a cooling coil disposed is well known in the art. ' Returning to the ?tting 33, the cooling water discharged from the condenser by the inner tube : 55 30 is admitted to a cooling coil 35 which iswound around said end portions of reduced diameter of , the motor compressor casing, being“ in direct about the motor-compressor unit for cooling the same, and means for conveying cooling water . through said coil. ' 2. A self-contained unit air conditioner for an’ 55 enclosure comprising a casing having upper and lower compartments, an evaporator in the upper compartment, means for circulating air through said upper compartment in heat exchange rela 00 The cooling water discharged from the condenser, ' tion with said evaporator, an enclosed motor- 60 while relatively warm, is still su?lclently cool to compressor unit in the lower compartment com .maintain the motor of the motor-compressor_ prising a motor, a compressor driven thereby: and unit at sufficiently low temperature. The other. a ?uid tight casing enclosing the motor and the or discharge end of the. cooling coil 35 is con compressor, a cooling passage extending about 65 nected'to a valve 36 which controls the flow of . said fluid tight casing for removing heat from 65 cooling water. .The valve 36 is operated by a said motor-compressor unit, and means for con pressure responsive device 31, which is subjected veying cooling ?uid through said passage. to the pressure in the high side, or high pressure 3. A unit air conditioner comprising a casing portion, of the refrigerant circuit, said pressure having upper and lower compartments, an air 70 being transmitted from the liquid receiver 34 cooling heat exchanger in the upper compart- 70 through a tube 38. Upon increase in pressure in ment, means for circulating air through said the high pressure side, indicating a greater de upper compartment in heat-exchange relation mand for cooling water, the pressure responsive with said heat exchanger, a motor-compressor device 31 effects increased opening of the valve unit disposed in the lower compartment, a cool- 7 76 36 to provide the greater flow of cooling water. ing coil disposed about 1the motor in. heat?“ contact with the outer surface of the casing and disposed interiorly of the condenser tube 38. 2,125,727 3 exchange relation therewith, a condenser in the compartment, said upper compartment having an lower compartment, and means for conveying _ inlet at one end and an outlet at the top thereof, cooling ?uid ?rst through said condenser and an evaporator coil disposed in said upper com partment in a direction the major component of. then through said cooling coil. 4. A unit air conditioner comprising a casing which is horizontal, and means for circulating air having upper and lower compartments, an air inwardly through said inlet, over said 'coil, and upwardly through said outlet. cooling heat exchanger in the upper compart 8. A unit air conditioner comprising a housing ,' ment, means for circulating air through said upper compartment in heat-exchange relation structure of horizontally elongated form and with said heat exchange, a motor-compressor unit comprising upper and lower horizontally elon- 10 disposed in the lower compartment, a cooling gated compartments, an elongated motor com coil disposed about the motor in heat-exchange pressor unit disposed horizontally in said lower compartment, said upper'compartment having an relation therewith, a condenser comprising a inlet at one end and 'an outlet at the topthere double-tube coil encompassing the motor-com cf, an evaporator coil disposed within said upper 15 pressor unit, and means for conveying cooling 15 ?uid ?rst through said condenser and then compartment, and means for circulating airin wardly through said inlet, in contact with said through said cooling coil. 5. A unit air conditioner comprising a casing ' having upper and lower compartments, an air 20 cooling heat exchanger in the upper compart ment, means for circulating air through said upper compartment in heat-exchange relation with said heat exchanger, a motor-compressor unit disposed in the lower compartment, a cooling 25 coil disposed about the motor in heat-exchange relation therewith, a condenser carried by the motor-compressor unit, means for conveying evaporator coil, and upwardly 'through' said out let. 9. In a unit air conditioner, the combination 20 of a housing comprising a top wall having an out let opening therein and a plurality of vertical walls one of which has an inlet opening adjacent the top wall, a cooling coil disposed beneath said outlet and inclined downwardly in a direction 26 away from said inlet, said coil having extended heat transfer surfacesdisposed perpendicularly cooling fluid ?rst through said condenser and I thereof, and a propeller fan disposed on a hori- ' then through said cooling coil, and means for 30 resiliently supporting the motor-compressor unit. 6. A unit air conditioner comprising a casing having'upper and lower compartments, an air cooling heat exchanger in the upper compart ment, means for circulating air through said 35 upper compartment in heat-exchange‘ relation with said heat exchanger, a motor-compressor unit disposed in the lower compartment, a cooling coil disposed about the motor in‘ heat-exchange relation therewith, a condenser comprising a zontal axis adjacent said inlet for effecting ?ow of air horizontally inwardly through said inlet, 30 obliquely over said extended heat transfer surf faces and upwardly through said outlet. 10. In a unit air conditioner adapted to be disposed within a room to be air conditioned come W prising a chamber including a top wall having an outlet therein and a plurality of vertical walls one of whichhas an inlet therein, a fan mounted on said chamber for ,eifecting circulation of air therethrough from the inlet to the outlet, a coil double-tube coil encompassing the motor-com disposed obliquely of said chamber and inter pressor unit and carried thereby, means for con mediately of the angle between said~ top wall and veying cooling ?uid ?rst through said condenser - said one vertical wall, said coil having heat and then through said cooling coil, and- means for resiliently supporting the motor-compressor unit. 7, A unit air conditioner comprising a housing structure of horizontally elongated form and comprising upper ‘and lower horizontally elon gated compartments, an elongated motor com pressor unit disposed horizontally in said lower transfer surfaces arranged transversely thereof to assist in changing the direction of the air from the direction in which it enters through the inlet to the direction‘ in which it leaves through the outlet. MILTON KALISCHER. 40 DISCLAIMER 2,125,727.—~Milton Kalt'scher, Spring?eld, Mass. _AIR CONDITIONING APPARATUS. Patent dated August 2, 1938. Disclaimer ?led January 20, 1939, by the assignee, Westinghouse Electric ch Manufacturing Company. Hereby enters this disclaimer to the subject matter of claim 2 in said speci?cation except unit air conditioners wherein the cooling passage extending about the ?uid tight casing is formed by a structure which is separate "from and within the lower compartment. [O?tcial Gazette February 14, 1939.] '