Патент USA US2134149код для вставки
v Oct. 25, 1938. E. |_.v SCHELLENS ET AL ' ' 2,134,149 REFRIGERATION . _ Filed Aug. 13, 1935 6 Sheets-Sheet lv 4-70 //;? ,. ‘k 1 ' m - .J H llllllll- w- w‘. . EEEEE i ‘ I l / INVENTORS 17591. 5. ' rZf-A: TroiRNEY'. '4 7 ‘ Oct. 25, .1938. I \E. L. SCHELLENS ET AL 2,134,149 REFRIGERATION Filed Aug. 13',‘ 1935 1 ‘ Jf 6 Sheéts-Sheet 2 - ‘57 INVENTOR; ‘ Oct. 25, 1938. E. L. SCIHEILLENSET AL ‘ 2,134,149 REFRIGERATION Filed Aug. 13, 1955 .4 6 Sheets-Sheet 3 I Oct. 25, 1938. E. ,|_.' SCHELLENS ET AL 2,134,149 REFRIGERAT ION Filed Aug. 15, 1935 6 Sheets-Sheet 4 l J . W" IN VENTOR5 BY Oct. 25, 1938. ‘ E. L. SCHELLENS ETYAI. ‘ ' 2,134,149 REFRIGERATION " Filed Aug. 13; 19:55 a Sheets-Sheet e" .17" .8” \\ \\ \\ \ \\ \\ \\ \\ \\ \\ \\ \\\>\\ \ \\\ \:\ \\\\\\\\ \\\ / / / / // / / \\ oi \\ \\ \\\\:\ _ v - , Q ; ” BY I v . ' " . I INVENTOR’ J Patented ' ' ‘ 2,134,149 UNITED STATES ‘PATENT OFFICE , 2,134,145‘ I REFRIGERATION ' Eugene L.‘ Schellens, Bidgewood, NJ J., and Wil \ liani I. Hamby, Great Neck, N. Y., assignors to Servel, Inc., New York, N. ‘1., a corporation of Delaware _ , Application Ame 13,1935, Serial'No. 35,924 > 12 Claims.- (or 62-89) tions l6 and" by means including the analyzer 2|, an air-cooled recti?er 23/, and a liquid cooled of improved appearance, operation, and utility. recti?er 24. The condenser sections l6. and 11 ' grins invention relates to refrigerators and it is an‘ object of the invention to provide a‘ refrigerator as will appear upon consideration of the follow . 5 ing description in conjunction with the accom panying drawings forming part of this speci? _ tion and- of which: , - I . Fig. .1 is a front elevation, partly broken away, of a refrigerator embodying the invention; Fig. 2 is a more or less diagrammatic view of an absorption refrigeration apparatus for the refrig erator; - are provided with heat transfer ?ns for cooling The absorber | 9 is cooled by heat trans fer to air through a ?uid heat transfer circuit including a coil 25 arranged in thermal conductive. - by air. relation with the absorber i9 and connected to an ‘ air-cooled condenser 26., The circuit including the absorber cooling coil 25 and the condenser 26 contains Wsuitable heat transfer ?uid such as methyl chloride which vaporizes in the coil 25 ‘Fig. 3 is a top view of the refrigerator shown r and lique?es in the condenser 26. in Fig. 1; ll erator; V - Y ' . > Fig. 4 isa vertical. sectional view of the refrig . ‘ tion liquid such as water. ' ' Fig. 5 is a sectional view takenon line 5-5 I in Fig. 4'; . Fig. 6 is a detail‘ section taken ‘on line .6-8 80 in Figs. 4 and 7; The refrigeration system contains a solution of - refrigerant ?uid ‘such as ammonia in an absorp ‘ ' Fig. 'l is a section taken on line 'I—'| in Fig. 6; Fig.8isasectiontaken online8-8 inFig. 6: 15 The'solution, for ‘in stance, a thirty per cent solution of ammonia in water, may be introduced into the system through _ - a suitable charging plug (not shown) in the lower part of the absorber IS. A suitable inert pres sure equalizing gas, such as‘ hydrogen, is then introduced into the system at a pressure corre- . and Fig.6!) is a detail section ‘taken on line 9—.9 vspending to that in which ammonia condenses at a fairly high room temperature as, for instance. .80 - Referring to Fig. 1, a refrigerator III has ather mally insulated storage compartment ll accessi bleby means of adoozr II. “The outer surface of the door I2 is ?ush with the outer ‘surface of the front of the cabinet II and is hinged to the cab IO/inet on one side -by means of concealed hinges. The door I2 is‘ provided with a concealed latch‘ on the free side opposite the hinges. The latch is operated by means of mechanism concealed within the door and including a disc It, or other 14 suitable impact receiving member, which is re ciprocable in a recess in the outer surface of the door. A fuller explanation of the door latchsand operating mechanism may be had by reference to an application Serial No. 32,741 of Norman 'MBelGeddesL , In Fig. 2 is shown more or less diagrammat ically an absorption refrigeration system gener ally of the type disclosed in Patent 1,809,384 to von Platen et al. i'lhe particular system shown jlInH‘g'. 2 comprises a generator H, a ?rst con denser section IS, a second condenser section ' I‘I, an evaporator 18, and an absorber I9. The evaporator I8 and the absorber iii are intercon nected for' circulation of gas therebetween by means including a gas heat exchanger 20. The generator l4 and the absorber I 9 are intercon ~ 100° F. The generator | 4 is suitably heated’ as, 25 for instance, by a gas burner 21 arranged so that the burner ?ame is projected into a ?ue 28. Operation of the burner may be automatically controlled by a thermostatically operated valve ii in the burner supply line. The valve operating thermostat shown in Fig. 2 is of an expansible ?uid type and the sensitive bulb |5a is located adjacent the evaporator iii. In operation of the refrigeration system, am monia vapor expelled from solution by heat in the generator I4 ?ows from the upper end of the generator stand-pipe 29 through a conduit -30 into the -analyzer 2|, where the vapor bubbles upwardly through enriched absorption liquid. From the analyzer v2|, ammonia vapor flows in conduit 3| through the air-cooled or high tem perature recti?er 23 and the lower temperature or liquid cooled recti?er 24 to the ?rst condenser . section | 6. Liquid ammonia formed by condensa tlon in the condenser section l6 ?ows through a conduit 32 into the recti?er 24 and thence over?owsthrough a conduit 33 into the‘upper end of the coil pipe evaporator l8. Ammonia vapor which may not have been condensed in the ?rst condenser section l6 passes through con means including an analyzer 2| and a liquid heat duit 32, the upper part of the recti?er 24, anda conduit 34 into the second condenser section 11. Liquid ammonia. formed by condensation in the exchanger 22. The generator I4 is connected for ll flow of vapor therefromto the condensing sec- condenser section |‘| ?ows through conduit 35 and conduit 33 into the evaporator i8. nected for circulation of liquid therebetween by I, 2,184,149 , . In the evaporator IS, the liquid ammonia ?ows - ?ow upwardly through compartments II and I. downwardly,‘ evaporating and diffusing into hy drogen which enters the lower part of the evap ‘oratorthrough a conduit 36. The resulting gas mixture flows from the upper end of the evap orator i8 through a conduit 31, the inner passage ll of the gas heat exchanger 20, and conduit 39 into the absorber i8. In the absorber, ammonia I ‘is absorbed out of the gas mixture into weakened '10 and the upper part of compartment I‘I, leaving the top of these compartments through the open ing 6|. The ?rst condenser section II is located generally horizontally in the top compartment I. and arranged therein at an angle so that its heat transfer fins extend across the path of air flow upwardly through the compartment is. The con denser section l1 is'generally L-shaped, having absorption liquid which enters the upper part of two portions Ila and Nb generally perpendicular the absorber through a conduit 40. to each other. The portion Ila. is located in the upper end of the‘ rear apparatus compartment The weak gas ' flows from the absorber through a conduit 4|, the - outer‘passage 42 of the gas heat exchanger 20,. and conduit 36 to the-evaporator l8; ‘ chamber 51, and the portion "b is arranged sim ilarly to the ?rst condenser section I6, but in the Enriched absorption liquid flows from the low 4 top compartment 58 on the opposite side of the 16 er part of the absorber l9 through a conduit 43, ‘refrigerator from the condenser section It in the - 15 the outer passage 44 of the liquid heat exchanger 22, a conduit 45, the analyzer 2|, and a conduit 46 top compartment ‘59. It will now be understood that air entering the side opening 80 flows up wardly in thermal contact with the condenser sec to a chamber 41 in the-generator l4. The en riched absorption liquid is raised by thermosyphon tions l6 and I1 and then out through the top air action from the chamber 41 through a conduit 48' ' outlet opening 6|. It will be vseen that the con into the upper part of the generator stand-pipe 29. denser, comprising sections IB and I1, is generally. ' The lower end of the generator stand-pipe ‘29 is U-shaped or horseshoe shaped. , connected to_a chamber 49 of the generator from ' 25 which weakened absorption liquid flows through a conduit 50, the inner passage SI of the liquid heat exchanger 22, and the conduit 40 into the upper part of the absorber Ill. The lower end of the condenser section I‘! is_ 30 connected by means of a conduit 52 to a vessel 53,_ commonly referred to as a pressure vessel, which is connected by means of a conduit 54 to the ab sorber l9. By means of this path of flow from the Referring now moreparticularly to Figs. 4 and 6 to 9, the refrigerator storage compartment II is outlined by what is usually referred. to as a liner 62, enclosed by thermal insulation- material 02. The liner 62 is generally rectangular, andmay . be formed of sheet metal which is porcelained on the interior to provide sanitary walls for the storage compartment. The upper parts of the side walls formed by the liner 82 are inclined slightly inwardly. This angular structure of the storage compartment at the top of the refrigerator ._ condenser'to the absorber, non-condensible hy drogen is conducted to the gas circuit ‘instead of permits of the previously described condenser becdmingtrapped after passage through the con compartments I8 and 59 in the outer side edges. denser. ' The vessel‘ 53‘ provides storage space for,‘ at the top of the refrigerator and within the gen erally rectangular contour of the refrigerator. hydrogen which is displaced by uncondensed am monia vapor and forced into the gas circuit, thus The top of the storage compartment II is closed , 40 raising the'total pressure in thesystem on in - at thefront by what may be termed a shield plate crease in air temperature beyond that for which v64, which is provided with two rectangular open the system was initially charged. ‘ The manner in which the above described re ings 66 and 66. The shield plate 84 is preferably ' porcelained on its outer surface and presents the frigeration apparatus’ is arranged and located in same appearance and cleanliness as the interior 46 the refrigerator may be'seen in Figs. 4 ~and 5 and ofthe storage compartment formed by the liner thev succeeding detail figures. In these ?gures,‘ the same parts of the apparatus are numbered ’ the same as in Fig. 2. The generator I4, analyzer 50 2|, and liquid heat exchanger 22 are encased .in thermal insulation material 55, indicated in dot ted outline in Fig. 2 and in solid outline in Figs. 4 and 5. The refrigerator I0, in addition to the thermally insulated storage compartment H, is - provided with an- apparatus compartment having 55 a horizontal portion 58 in the lower-part of the refrigerator, and a-communicating‘ upright por 1 tion 51 in the‘ rear of the refrigerator. Addi tionally, the upper part 'of the refrigerator is formed to provide two horizontal compartments 5! and 59 along the top side edges of the refriger ator and extending forwardly from the upper end of the rear compartment 51. The outer casing of‘ therefrigerator is constructed to provide a linear‘ opening 60 extending horizontally aroundthe up 65 per part of the refrigerator on the two sides and the rear, and at the bottom of the upper compart ments 58 and 59. _ 'o . . As may be seen in Fig. 3, the top of the refriger ator is provided with a generally‘ U-shaped or 70 horseshoe'shaped linear opening GI. The sides or legs of the opening- 6| overlie the compart ments 58 and‘ 59, andthe cross portion of the top opening 6| overlies the upper end of the rear apparatus compartment 51. It will now‘ be under 75 stood that air‘ may enter the side opening 60 and 62. . ' , ' The cooling element or evaporator coil ll is located in the upper part of the refrigerator stor age compartment II and behind the shield plate 64, which conceals the cooling element from view. The lower part of the evaporator coil II is located horizontally between, and in contact with. two generally similar receptacles l1 and". The re ceptacle 6| may be provided with a partition or I shelf 69. -The receptacles i1 and” are open at ll their forward ends and-in alignment with the openings “and 86. in the shield plate 04. It will now be understood that the~ receptacles C1 and 68 form freezing compartments and are for the purpose of receiving ice freezing trays or the like. The front ends of these trays may be seen in Fig. 1. Two ordinary-size trays ‘I. and II may be placed in the receptacle II which is provided with the intermediate partition or shelf 0 and a dot: bl'e size tray 12 for frozen desserts or the like may be placed in the left hand receptacle .1. _ Around the outside of each of the receptacles 61 and I8 and in spaced relation thereto are placed metal vcasings ‘I3 and 14. A larger upper loop no of the evaporator coil is located within 70 the casings 13 and ‘I4 and in thermal contact therewith. The top surfaces of the casings ‘I! and 14 are sloped downwardly toward the open ing 15 in the middle of the lower part of the evaporator coil l8. These sloping surfaces are 76 2,134,149 corrugated to form heat transfer surfaces receives air for combustion through louvres 8!. _ 16 and 11; An annular casing or sleeve 18 'is The other parts of the apparatus are arranged‘ ‘ placed inside of the boil it. An annular mem ' in the rear upright :apparatus ‘compartment ber 19 provides a trough directly beneath the.‘ 51. The gas heat exchanger 20 is_ preferably. ’ evaporator coil l8 and has a drain opening .or spout 80 in. the rear of the storage compartment recessed in the, insulation 63 of the storage com- '5 I partment wall.‘ ‘The rear wall-of the Irefrig‘era-. ll. The spaces between the receptacles 61 and ' tor I0 is provided with an opening‘or lattice-_ ‘ 68 onone hand and the casings ‘I3 andll-and work 85 directly opposite the absorber cooling . the sleeve 18 on the other hand are ?lled'with condenser 26. Air ?ows through the latticework . suitableinsulation material. .10' stood that the lower part of It will be under-:' 85,-.‘upwardly' over the condenser-.16, upwardly 10 the cooling coil I8_ through‘the upper part of the apparatus com-.~ ‘ ‘is in, thermal contact with the receptacles 61 partment 51, and ‘out. through the‘ opening 61 and 88 forming the freezing compartments and . in the top of the'refrigerator. ‘This upward -'?ow I ‘ also with the annular casing or sleeve 18 on" the of air in the upper part of‘the- apparatus .com- ‘ inside of the coil 18. The outer casings ‘I3 and partment 51 aids in cooling .the section. vl‘la. of‘ ‘15. 14, provided with the heat transfer ?ns 16“ and the condenser by inducing a' greater ?ow .ofair ; ‘H, are in thermal contact with the upper turn through the opening 60 and upwardly over "the llb of the cooling coil, which is at a higher tem perature than the lower part. The reason for condenser section. Ha. _ this is'that hydrogen ‘?ows upwardly through ing - '' It will be understoodthat the cooling elemen‘t claims. , What is claimed is: ammonia evaporates at a higher temperature in ‘ . , , . . be made within the scope of the-invention which 20 is‘ not‘limited except as indicated in'the follow-v the cooling coil l8, and the partial‘ pressure of ammonia is greater in the upper part 'of'the coil than in the lower part of the coil, wherefore the the upper part of the coil. g ' It will be understood that other‘ changes-may _ ‘ _ . .1 '_ ~ ‘ ' ‘ - -- ' > ;-' i t .1. A refrigerator ‘including a cabinet having .. thermally insulated top, bottom, ‘and-side walls 25 _ forming a food storage compartment and adoor structure ‘just described may be mounted ‘on a affording access ‘ to said compartment, .- upper removable‘ insulated wall section or closure mem parts of said side walls‘being sloped inward on ber 8| which fits into a window or opening in the several sides of the cabinet forming a reduced ' rear wall of the thermally insulated storage come upper portion vof ‘the folodfcompartment, and 39. partment II, as may be seen in Figs-4 and 9. refrigeration apparatus including a cooling ele . Thus, ‘the cooling element may be removably as ment in said compartment and condenser parts vsembled and disassembled as a unit with the located laterally on several/ sides with respect refrigeration apparatus, the cooling element be, to said cooling element and in the spaces outside ing inserted and withdrawn through the wall of’ said‘ inward sloping wall parts substantially opening into which the‘ closure‘ member 8| ?ts within the upward projected ‘areas of the lower . when the apparatus is- ‘assembled in the refriger .parts 'of said side ‘walls. ator. ' Referring now to Fig. 6, the direction of air. .01 ?ow in the storage compartment II is indicated by arrows. Air flows upwardly at each side of the refrigerator compartment, up behind the shield plate 64. across the upper part of the casings‘ J3 and 14 in contact with the ?nsv 16 and 11,. 2.‘A refrigerator including a gc‘abiynet having thermally insulated top'; bottom and side .walls ‘forming .a food storage compartment which is‘ substantially rectangular in. horizontal section and a door affording access tosaid compartment. the upper parts of said side walls adjoining the wall which includes said door being slopedin- ' and thence downwardly through the opening ‘I5 ' ward to form a narrowed upper portion of‘the' in the center of the lower part of the cooling coil food compartment, and a' refrigeration apparatus -_ ’ ll.’ Air is caused to ?ow in this direction for including a cooling element in said compartment ‘ the reason ‘that the sleeve 18 on the inside of and condenser ‘parts located laterally with respect the cooling coil I8 is at a lower temperature than - to said cooling element and in the spaces outside _ the other cooling surfaces of the cooling element of said inward sloping wall parts substantially contacted by the air, wherefore air moves down within the upward projected area of the lower wardly'within the sleeve 18. parts of said side walls. . When frost is melted from the cooling ele _ ment, the drip is collected in the trough ‘l9 and ‘ - . ‘ _ ‘ 3. A refrigerator including a‘ cabinet having thermally ‘insulated top, bottom and vside walls discharged in the rear of the storage compart forming ‘a food storage compartment which is ment II by way of’ the spout 80, into any suit- _' substantially , rectangular in ‘- horizontal ‘section able vessel placed beneath the spout. _ and open on one side and a door for closing said Referring‘ to Fig. 9, a suitable lamp 8!, such as open side, the. upper parts of said side walls ad ' an electric light bulb connected, as known, to joining the open side of said compartment being be lighted when the door i2 is open, is located sloped inward to. provide a reduced upper portion in thej'top of the storage compartment ll, be of the food compartment, said door being sub-' ‘ hind the shield plate ‘64, and above the central - stantiaily rectangular and overlapping said re opening ‘I! in the center of the cooling coil la. duced upper portion of the food compartment. .The light is directed downwardly through the and refrigeration apparatus including a cooling central opening 15 into the refrigerator storage inthe reduced portion of said compart compartment therebelo’w, vwhereby light is avail-‘ element ment and condenser parts located laterally with able while its source is concealed. The other parts of the refrigeration apparatus respect to .‘said cooling element and in the spaces are located in the apparatus compartmentsv 56 outside of said ‘inward sloping wall parts substan tially within the upward. projected area of the 70 and 51, as illustrated in Figs. 4 and 5. The hor izontal portion of the generator I‘ and the liquid lower parts of said side walls. ‘ '4. A refrigerator‘ as set forth in claim 3 in heat exchanger" in theilower-part of the insu-‘ which a plate of substantially the same width ' ‘ lation‘casing 55 are located in the lower appa ratus compartment“, so‘ that the .burner 21 is as the lower‘ part of. ‘said'storage compartrrientv , 75 at the front of the ‘refrigerator cabinet Illll and conceals the reduced upper portion .of said‘ coni- 75. I "4 2,184,149 _ partment when viewed horizontally through said ‘open side. . ing a substantially rectangular cover plate at the‘ front of the evaporator in part overlapping the v5. A refrigerator as set forth in'claim 1 in ' oblique insulated wall parts and a door also in part overlapping the oblique insulated wall parts. which a casing encloses and fits around said in 'sulated walla-said casing having substantially - ' 10. A refrigerator as set forth in claim 6 hav- a vertical sides and having openings therein located ' ing the lateral spaces at both sides and‘ having at the bottom and top of said condenser spaces. ' casing members at both sides and rear providing 6. A refrigerator including a cabinet having ‘nu-shaped elongated lower and upper apertures. ~ _ 11. A refrigerator including a food storage insulated walls enclosing a food compartment, an evaporator ‘in the upper part of said food com ' compartment formed by thermally insulated top, '10 partment, s'aid cabinet including vertical wall bottom and'side walls, upper parts of said side parts below said evaporator, a cabinet wall part walls being sloped inward so that there is in the upper part or said compartment a space having above said evaporator-being horizontal, and cab inet wall parts laterally of said evaporator being reduced cross sectional area and spaces outside. of the insulated walls on several sides of the," oblique to and connecting the vertical and hori zontal wall parts providing-lateral spaces, casing refrigerator to receive condenser parts. and a cooling element in ‘said food storage compart elongated apertures at the bottoms and tops of’ ment. said cooling element being formed and'ar the lateral spaces, members completing with said ranged‘to occupy substantially the entire- space ' parts bounding said lateral spaces and providing evaporator a freezing system of the type employ , ing inert gas, said freezing system including con denserparts in said lateral spaces arranged to be cooled by air passing through said apertures, of reduced area in the upper part of the food com- ,a? partment so that there-is no unuseable ‘storage space in the food compartment and no storage space affected in area by the inward sloped parts refrigerant‘ from the; condenser parts to the of the side walls. 12. A refrigerator being at substantially the same elevation. provided with a substantially rectangular door ‘ and said freezing systemuincluding means to ?ow set forth in claim 11 in [is evaporator by~.;,-gravi_ty, 'the upper part of the which the food storage compartment is substan- j evaporator and the lower part of the condenser v, tially rectangular in horizontal section and is '7. Apparatusv as set forth in claim 6 in-which , opening in one side which is not sloped'in at the the casing ‘parts bounding the lateral spaces have. horizontal and vertical outer surfaces in align , ment respectively with verticaland horizontal . suriages'of the insulated cabinet walls. top, a substantially rectangular door for closing ,89 said opening, said door overlapping the reduced upper part of said compartment, and a substan tially rectangular plate ‘adjacent the door open 8. A'refrigerator as set forth in claim 6 having .ing and'concealing said cooling element and the a substantially rectangular door'ln ‘part over--v reduced upper part of the storage compartment. (es lapping the oblique insulated wall parts. Q. A refrigerator as set forth in claim 6 h'av-? EUGENE .L. SCHELLENS. WILLIAM I. HAMBY. '