Патент USA US2116914код для вставки
May w, 1938, 2,116,914 E. F. SCHWELLER REFRIGERATING APPARATUS 5 Sheets-Sheet 1 Filed Nov. 26, 19552 45 s.m 5‘ 4., 6, .. . w w 6 n‘ 3 5. .. / 2 he, % 5L J w; 5 M 2125 5 5 12 1.-_\.:1- o V / V a 4 4T\45./ 1.K7~\O 3/l4V L 10 1 / _, __ . I!l i-kmu e . .: 4/ _ a t-3 1 . .- W7. 3/, El? 1 22 27 so 27 93% W Ww May 10, 1938. E. F. SCHWELLER'“ 2,116,914 REFRIGERATING APPARATUS Filed Nov. 26, 1932 5 Sheets-Sheet 2 May 10, 1938. E.‘ F. SCHWELLER ‘2,116,914 REFRIGERATING APPARATUS Filed Nov. 26, 19:52 70 7 69 2 65 71 68 67 5 Sheets-Sheet 3 \ 66 ww/zmlmzf, May 10, 1938. 2,116,914 E. F. SCHWELLER REFRIGERATING APPARATUS Filed Nov. 26, 1952 5 Sheets-Sheet 4 105 109 ' / 102 82 103 99 111A "1 06 101-—- / 100 /105 105 107 as) 92 _ 91 93 95 .96 94' V90 90 W2% @342 May 10, 1938. E. F. SCHWELLER REFRIGERATING APPARATUS Filed Nov. 26, 1932 120 2,116,914 5 Sheets-Sheet 5 I #19. 126 122 :E: 121 124' 123 125 117 116 119 127 118 115 Patented Nlay 10, 1938 2,116,914 . STATES’ PATENT OFFICE 2,116,914 REFRIGERATING APPARATUS Edmund F. Schweller, Dayton, Ohio, assignor, by mesne assignments, to General Motors Cor poration, a. corporation of Delaware Application November 2c, 1932, Serial No. 644,473 11 Claims. (Cl. 220-9) This invention relates to refrigerating appa larly to Fig. 1 there is shown a refrigerator cabi r'atus' and more particularly to refrigerator cabi nets. ' net 20 which is constructed of a one piece vertical “ i 'As a general rule refrigerator cabinets have been built with a heavy wooden framework to which is fastened inner metal wallsand on the outside of which is fastened outer metal panels. Between the walls there has been provided insula 10 ‘ generally tubular sheet metal shell ‘2i rectangu lar in cross section. In order to hold the tubular sheet metal shell 2| in position and make it more 5 rigid, there is provided a rectangular bottom sheet 22 and a rectangular top sheet 23 each of which are provided with flanges 24 and 25 which are ?tted within the tubular sheet metal outer tion, such as cork, which has been scaled by dipping in or covering it with hot asphalt ‘to pre vent the access of moisture thereto. Such cabi nets have been open to a number of objections in that they are rather heavy, that they require a large amount of labor and that‘ they are relatively 15 high in cost. , ' shell with their ?anges extending upwardly and 10 downwardly so as to form the top and bottom en closures for the outer walls of the food compart ment 26 which is located within the outer wall of the cabinet. The top and bottom metal sheets 22 and 23 have their flanges 24 and 25 tightly l5 The objects of my invention include the pro vision‘of a refrigerator cabinet in which the outer metal walls form the main structural’ framework welded to the tubular member so as to form a hermetic air tight joint. These top and bottom members strengthen the outer tubular shell so as of the cabinet and which outer metal walls are to make it self sustaining. 20 sealed so as to prevent the access of moisture to . Beneath the bottom sheet metal member 22 20 the insulation, to the provision of a door for such there are provided legs 21 at the corners of the cabinet which is also frameless and which has its metal walls forming the main. structural framework of the door, and to the provision of a simple and unique way of supporting the refrig erating apparatus and connecting di?erent por tions thereof through the walls of the cabinet. .It is another object of the invention to provide an improved method of installing and removing ' cabinet for supporting the food compartment at a suitable height above the ?oor. In the front portion of the outer tubular sheet metal member 2| there is provided a large opening which is 25 surrounded by a ?ange 28. Surrounding the flange 28 are‘ placed wooden frame members which form a door jamb frame 29. frigerator cabinet embodying my invention; In order to properly insulate the walls of the cabinet there is provided insulating panels one in 30 each wall of the cabinet. In the bottom Wall of the cabinet there ‘has been provided an insulated panel 30, in the rear wall, a panel 3i, in the top wall. a panel 32, and in the side walls the panels 33 and 34. These insulation panels are prefer- 36 ably placed in the cabinet while the cabinet is lying upon its back. Taking the bottom panel 30 Fig. 2 is a front vertical sectional view of the cabinet shown in Fig. 1; rality of rectangular frames 36 which are made the refrigerating system from the cabinet. Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accom panying drawings, wherein a preferred form of the present invention is clearly shown. In the drawings: ’ ' Fig. 1 is a side vertical sectional view of a re Fig. 3 is a transverse sectional view 810118 the line 3--3 of Fig. 2; Fig. 4' is a fragmentary transverse sectional view of the door for the cabinet ; Fig. 5 is a vertical sectional view of the modi?ed form of‘ the invention in which the refrigerant compressor is placed beneath the food compart ment; . Fig. dis a fragmentary transverse sectional view of a modi?ed form of the door; Fig. 7 is a fragmentary section of a further modi?cation of the door; and Fig. 8 is a section upon the line 8-8 of Fig. 7 with the rubber gasket member omitted. Referring to the drawings and more particu as an example, these panels are made of a plu of some low conducting material such as wood. 40 These frames 36 have sheets of bright metallic foil 31 stretched thereon and fastened thereto by a suitable adhesive. After the foil is applied, the frames are stacked together and fastened together to form an insulation panel wherein the sheets 45 of bright metallic foil 3'! ‘are held in spaced rela tion with air spaces 38 in between. On each of the outer sides of each of the panels there is pro vided a sheet of waterproof paper 39. After the cabinet has been placed upon its back 50 and the insulation panels inserted in their places in the cabinet it is'ready for the insertion of the inner liner and door molding. It has formerly been the practice to fasten the inner liner which ' is the inner sheet metal wall on the food compart- 1' 2,116,914 2 ment by having its front edges nailed or otherwise secured directly to the door jamb frame.- In order to provide a better insulated cabinet and assembly thereof I have fas tened the rectangular door molding 40, which is the cap screws52 which are threaded into the lower end of the insulated bushings 48. In order to provide a passage through the insu lation for the accommodation of the insulating bushings 48 a plurality of transverse ?at wooden straps 53, of the same thickness as the framework made of some suitable low conducting material ' of the insulation panel 32, are provided between such as wood, to the inner liner 4| which forms the foil at the proper, location and an aperture the inner sheet metal walls of the cabinet. This inner liner has a ?ange 42 at its front edge which ?ts against the rear edge of the rectangular door 10 molding and has a bead which extends over the projecting corner of the'door molding. Wood screws extend through the ?ange 42 into the rec tangular door molding to fasten the door jamb made through this point of the panel so as to prevent the air spaces between the sheets of foil from being exposed. A passage 54 extending through another set of transverse strips is pro vided for the refrigerant lines 55 which extend to theevaporator 5|. In order to keep these lines 15 out of contact with the outer walls of the passage through the insulation and to close the ends of the passage there is provided rubber stoppers 55 its front end fastened by wood screws to. the with suitable apertures to receive refrigerant con of the door jamb frame 29. The duits and ?tted in the ends of the passage 54 ' inner periphery 20 door molding 40 isalarger in its outer dimension through upper sheet metal member or top plate 23 and the inner sheet metal member 49 which may 20 than the outer dimension of the inner liner 4|. Likewise the door jamb frame 29 is also larger also be called bottom plate. In order to insulate than the outer dimension of the inner liner 4|. the passage 54 some suitable low insulation such ' manner the as kapok or mineral wool may be placed therein. assembly consisting of the inner liner and door The top wall of the cabinet is made removable 25 25 molding may be slipped into the door opening and so that the evaporator and compressor, which are fastened thereto by the bushings 48, may be fastened from the outside. By this type of con struction a substantial barrier is placed between removed therefrom without disturbing the refrig- _ . the inner liner 4| and the outer metal walls 29 erating system. This is done by connecting the to prevent heat transfer from the outer walls to top plate 23 to the ?anges 25 through the medium of the machine screws 51 and a gasket 58 of 30 the inner walls. In order for heat to travel from the outer wall to the inner liner it is necessary sponge rubber which is clamped tightly between that this heat be conducted through the door the edges of the top plate 23 and the ?ange 25 molding. Inasmuch as the door molding 40 does to make an hermetic seal. A bottom plate or not readily conduct heat very little heat will be inner sheet metal member 49 is sealed to the inner liner 4| by a suitable sponge rubber gasket 35 transferred to the inner liner through this path. This construction greatly facilitates the assembly 59. This bottom plate 49 has no other support than the bushings 48. The gasket 59 is com of the cabinet. ‘ In the upper portion of the cabinet above the pressed by the weight of the refrigerating ele food compartment 26 I provide a machinery com ments upon the panel or top wall and by the partment 44'. The machinery compartment 44 clamping action of the machine screws 51. Con 40 nected to the ‘compressor 46 and the evaporator has a removable top ornamental cover 45 pro vided with turned down flanges which ?t over 5| by the flexible refrigerant conduits 56 and 18 ' Within is a sheet metal plate type condenser 80 which is ' the outside of the outer metal walls 2|. the machinery compartment 44 there'is provided fastened to the rear wall of the cabinet and which 45 a refrigerant compressor 46, preferably of the is cooled by vertically flowing air. ‘ A door BI is provided in the door opening of sealed unit type, which is mounted upon four vibration absorbing brackets 41. These brackets the cabinet. The rear portion of the door (see 41 have feet which rest upon the top sheet metal Fig. 4) is provided with a deep pan-shaped member 23 which is provided with radial ribs sheet metal member 62 having ?anged edges 63 which are fastened to wooden connecting strips 50 formed therein for strengthening this top sheet metal member so that it may support the weight 84 by suitable wood screws 69. The front por unit 46 without being distorted. tion of the door BI is provided with a ?at sheet Beneath the top sheet metal member and directly metal member 65 which has its edges 56 curled over the outer edges of the connecting strips 54 beneath the feet of the bracket 41 there is pro vided four bushings 48 of a suitable insulating but spaced and insulated from the rear of the sheet metal panel 63. The connecting strips are material such as hard rubber or a phenol con fastened by means of the machine screws 51 to densation product. These bushings 48 are pro vided with reduced portions and shoulders at a bracket member 68 which is preferably spot their upper and lower ends which extend through welded to the sheet metal member 65. At the 60 suitably located apertures in the top sheet metal rear of the connecting strip 64 there is provided a rubber air seal which has a forked end. portion member or plate 23 and inner sheet metal mem ber or plate 49 which forms the top wall of the with one of the forks ‘ll fastened beneath the inner liner 4|. The reduced portion at one or flange 53 of the pan member 62 while the other even both ends of these bushings may be made fork 12 extends over and covers the ?ange ,por tion 83 of the pan 62 and thereby covers the 65 of a polygonal or irregular shape and the aper wood screws 69. A suitable foil insulation panel tures provided with a similar shape so that the 13 which is similar to a foil insulation panel turn. The refrigerant com; 4|. The door mold 15 molding 40 to the inner liner wedge shaped and has ' ing 40 in cross section is bushings will not _ pressor 46 is fastened to these bushings by having the cap screws 50 extending through the feet of 70 the bracket 41 and threaded into the bushings 48. A refrigerant evaporator 5| is provided in the upper portion of the food compartment 26 imme diately beneath the inner sheet metal member 49. ' ' 75 This evaporator is supported in proper position by heretofore described is provided at the front and rear sheet metal members of the door. The onl: difference between this panel and the othei panels heretofore described is that the doc: panel is thicker and has an additional sheet 0 bright metallic foil 14, an additional frame por tion and an additional air space providing bet 2,116,914 3. 1itertinsulation for the door portion of the cab ne . one outer side wall to the other side wall. 011 In Fig. 5, the cabinet has been so modified top of this insulation panel the top and bottom so as to provide a place for the sealed motor insulation panels, as well as compressor unit at the bottom. This cabinet 89 is also provided with a vertical generally tubu lar sheet metal member M which has upper and panels are placed. ' At this time the wooden strips which. make up the door jamb frame 88 are put into place. The inner liner member 88 and the wedge~shaped rectangular door molding are assembled separately and a reinforcing plate I96 and the evaporator bolts I8Isare put into place in the top portion thereof. After mak 10 vided with a similar construction in which the inner lining 89 is fastened to the door molding 85 which in turn is fastened to the wooden strips 15 a machinery compartment 88. At the bottom of ing this assembly, the inner liner together with 10 the door molding are slipped into place and the door molding fastened to the door jamb screws 101. By so fastening the door molding to the door jamb frame mem bers, the in-turned ?ange I88 surrounding the 15 the machinery compartment 88 there is provid- ' door opening is clamped tightly. In this way ed an angle iron member 89 which extends the inner liner is supported by the door mold 20 ing from the outer sheet metal walls of the cab around the bottom of the vertical tubular mem inet. The insulation panels are held against the ber 8i. At the corners of the angle iron mem ber 89 are‘ provided suitable cabinet legs 99 pref erably of sheet metal. Extending across angle 25 iron frame member 89 is a small channel mem The sealed motor compressor unit 92 cabinet at this time. The refrigerating system is then placed into is mounted upon vibration absorbing brackets the cabinet with the compressor supported on the cross members 9i and 96 and the condenser 25 is then fastened to the rear wall of the cabinet. 98 which are fastened to a sheet metal plate 99 which has a forked front end 95 which engages 30 outer walls of the cabinet by the inner liner 8d. 20 The door for the cabinet may be put on the the channel member iii. The rear end of the sheet metal plate 98 is fastened by suitable bolts to a rear cross member 96. The sheet 1 metal plate 98 is fastened by suitable gussets ill to a vertical plate type condenser 98 which is ornamental nameplate I 92 is fastened to the compressor unit 92 and the condenser 98 extend up the back of the cabinet and over the top of the food compartment 8i through a notch 99 in the front top portion of the cabinet to an 40 evaporator Hill which is supported by the. bolts Iili from the bottom sheet metal plate on the top wall of the cabinet. The notch 99 is formed by displacing the central portionv of the front III and the notch a name plate I82 has been 50 fastened to the cabinet in such a manner as to cover this notch. In this way it is not necessary the insulation panels or the of the food compartment in order that the refrigerant lines may be connect 55 ed to the evaporator. } This cabinet is assembled in a manner similar to that described for a top unit style. In the style of cabinet shown in Fig. 5, the vertical gen erally tubular sheet metal outer shell is ?rst formed into shape and the top and bottom ?anged sheet metal members or plates 82 and 83 are then hermetically fastened thereto by a suitable welding or soldering operation. At this time the lower angle iron ?ange 89 is also welded to the tubular member. " The cabinet is then turned upon its back. The insulation panels I05 are placed within the cabinet against the outer sheet ‘metal walls of the cabinet. These panels are made in a‘ manner similar to that described for the top unit style and are composed of a plurality of sheets of bright metal foil spaced ‘by thin air spaces. The rear insulation panel cov ers the entire rear portion of the cabinet and extends from the top sheet metal member82 to the. bottom sheet metal member 83 ‘and from the rubber tubular member III thereon are ex tended over‘ the top of the cabinet and placed within the notch in front of the cabinet while 30 the evaporator is bolted to the upper portion of the inner liner ‘by the bolts IM. After this, the mounted upon a rear wall of the cabinet. Flex 35 ible refrigerant lines I83 from the sealed motor sheet metal wall of the cabinet and by cutting 45 a notch in the upper portion of the door'jamb 85. Within this notch a suitable rubber tubular member III and the refrigerant lines are placed. In .order to cover this rubber tubular member After this the ?exible refrigerant lines I88 with ' front of the cabinet so as to cover the refriger-' ant lines at the front of the cabinet and the orna 35 mental top cover I89 is put into position on the‘ top of the cabinet so as to cover the refrigerant lines extending over the top of the cabinet. In Figs. 6 to 8 inclusive a simpli?ed form of door construction is shown for the cabinet shown 40 in Fig. 5. In this construction, a deep pan-shaped rear sheet metal member II 5 is provided with a ?anged edge portion II6. An insulating panel “I, made up of a plurality of frames II8 having sheets of bright metallic foil H9 therebetween, is placed within the pan-shaped member I I5. On top of this‘ is placed the outer'sheet metal door member I20 having a curled edge portion I2I and a necked-in or recessed ?anged attaching portion I22 which forms a sort of ledge is placed over the pan-shaped‘ member and the insulation. A thick rubber gasket member I23 is provided between the flanged edge IIB of the pan-shaped member “5 and the recessed attaching portion I22 of the outer sheet metal member I20. This 55 rubber gasket member I23 extends entirely around the door and is provided with an integral air sealing portion I24 which extends therefrom and rests against the curled edge portion I2I of the outer sheet metal member I29. The attach 60 ing portion I22 is recessed sufficiently to accom~ modate the thick rubber gasket member I28. This rubber gasket member acts as an insulation ,be tween the pan-shaped member H5 and the outer sheet metal member I20. In order to fasten7 these parts together, brass screws I25 are provided which extend through the ?anged edge portion H6 of the pan-shaped member H5 and are threaded into a tapped ex truded portion I26 upon the recessed fastening 70 portion of the outer sheet metal member. In order to cover the brass screws‘ I25 the rubber gasket is made in a sortv of a forked design so that a lip or extension I21 of rubber is provided 2,116,914 4 which extends over the brass screws I25 and the metically but removably sealed to the outer. walls, said insulation panel having a plurality of strips ?anged edge portion I I6 of the pan-shaped mem between the sheets of- foil and an aperture through ber H5; It will be seen that this door construc tion consists of only ?ve elements. The insula the strips and sheets of foil for providing a sealed tion panel, the‘ pan-shaped member, the outer opening through the foil panel. ' 4. A refrigerator cabinet comprising a box-like sheet metal member, and the fastening screws structure including an inner liner forming a com I25. \This greatly simpli?es the construction of partment to be cooled within said cabinet and having an access opening, surrounding said inner liner for insulating said compartment, 10 and means forming a supporting structure for the liner and said means for insulating said compart ment and forming as well the outer ?nish walls of the cabinet, said second named means having 15 an opening in one side thereof adapted to register the door and lowers the cost of the door by pro viding a very thick rubber gasket member be tween the pan~shaped sheet metal member and the outer sheet metal member, heat conduction between the inner and outer sheet metal members is effectively prevented. The brass screws are su?iciently small so that heat leak through the is not a serious matter. 15 screws However, it is possible to prevent heat leak with said compartment access opening of the cabinet and comprising an integral continuously through the brass screws by the construction extending one-piece sheet metal tubular element ,_ shown in Figs. '7 and 8. In this construction extending continuously across the side of the 20 keyhole slots I30 are cut in the recessed attach cabinet having the access opening therein and ing portion I32 of the outer sheet metal member. continuously across two adjacent sides and the 20 Within the smaller portion of the keyhole slot back of said cabinet. ‘ . r . 5. A refrigerator cabinet comprising a box-like there is slidably inserted the nuts I3I of a mate rial having low heat conductivity such as hard structure including an inner liner forming a com- . rubber which is provided with a squared groove partment to be cooled within said cabinet and 25 upon its periphery which engages the edges of having ‘an access opening, means surrounding‘ 25 the narrow portion of the keyhole slot I30 50 said inner liner for insulating said compartment, that the nut I3 I is tightly held and prevented means forming a supporting structure for the from turning. 30 The brass screws I35 are then threaded into these nuts I3I and otherwise the door is similar in every respect to the form shown in Fig. 6. liner and said means for insulating said com partment and forming as well the outer ?nish walls of the cabinet, said second named means. having an opening in one ‘side thereof adapted to 30 While the form of embodiment of the invention register'with said compartment access opening as herein disclosed constitutes a preferred form, of the cabinet and comprising an integralcontinu- ' it is to be understood that other forms might be ously extending one-piece sheet metal tubular 35 adopted, all coming within the scope of the claims element extending continuously across the side 35 of the cabinet having the access opening therein which follow. } What is claimed is as follows: . " and continuously across two adjacent sides and 1. A refrigerator cabinet including an inner the back of said cabinet, and the vertical portions liner, a rectangular door molding fastened to the of said sheet metal tubular element extending con 40 front edges of the inner liner, said door molding - tinuously beyond the means for insulating said having low heat conductivity, 40 compartment and. providing a plurality of ver being of a material a door jamb frame of a material having low heat tical walls of a second compartment for enclos conductivity surrounding'the front portion of the ing a refrigerating machine ‘adapted to be as rectangular door molding, fastening means for. with the cabinet.‘ ‘ ' fastening the rectangular‘ door molding to the sociated cabinet comprising a box-like . 6. A refrigerator _ 46 door jamb frame for supporting the inner liner, structure including an inner liner forming a' sheet metal outer walls fastened to and support compartment to be cooled within said cabinet. and ing the door jamb frame,'and insulating means having an access opening, means surrounding said between the outer metal walls and the inner liner. inner liner for insulating said compartment, 50 2. A refrigerator cabinet including an inner means forming a supporting structure for the ‘so vliner, a rectangular door molding fastened to the» liner and said means for insulating said ‘compart-f‘ front edges of the inner liner, said door molding ment and forming as well the outer ?nish- walls - ‘ I being of a material having low heat conductivity, ' of the cabinet, said second I named meanshaving a door jamb frame of a material having low heat an opening in one side thereof adapted to register 55 conductivity surroun ‘ng .the front portion of the ‘with said compartment access openingof the- “ 55 rectangular door molding, fastening means for cabinet and comprising an integral continuously fastening the rectangular door molding to the extending one-piece sheet metal tubular element door jamb frame for supporting the inner liner, extending continuously ‘across the side of the a large vertical generally tubular sheet gmetal cabinet having the access opening therein and member surrounding the inner liner but spaced continuously across two adjacent sides and the therefrom and being fastened to the door jamb back of said cabinet, and the vertical portions of ' frame for supporting said frame’, and ?anged transverse upper. and lower sheets insertedwith inwthe tubular member and having the ?anges fastened to the tubular member for closing the’ 65 end portions thereof. ' _ I - v 3. A refrigerator cabinet including inner and insulation between the inner outer metal walls, and outer walls, said cabinet having a removable wallv comprising a top plate and a bottom plate, 70 an‘insulationv panel between the top and bottom plate, said insulation panel comprising a plurality of sheets Including at least one of bright metallic foil held in spaced relation with air spaces bp-_ tween'by a framework, said top plate being her said sheet metal tubular element extending con--v tinuously beyond the means for insulating said compartment and providing at least three im pervious vertical walls of a-second compartment. for enclosing a refrigerating'machine adapted to be associated with the‘. cabinet. _ ' ' ' '7. A refrigerator cabinet comprising‘ a box-like structure including an inner liner forming a com partment to be cooled within said cabinet, and having an- access opening, meansfsurrounding' said inner liner for- insulating said compartment, means forming, a ‘supporting structure for the liner and said means for insulating said compart-j 70 2,116,914 ment and forming as well the outer ?nish walls of the cabinet, said second named means having an opening in one side thereof adapted to register with said compartment access opening of the cabinet and comprising an integral continuously extending one-piece sheet metal tubular element extending continuously across the side of the cabinet having the access opening therein and continuously across two adjacent sides and the 10 15 5 tion of said refrigerant circulating means to said bushings, means for securing a portion of said cooling element to said bushings, said securing means cooperating with one another and with said wall structure to form a rigid unitary con struction, and said rigid unitary construction be ing adapted to be bodily removable from the re frigerator cabinet. back of said cabinet, sheet metal closure means extending across the tubular element above and below the said means surrounding said inner liner 10. A refrigerating apparatus comprising a wall structure adapted to be supported upon a refrig_ 10 erator cabinet to form a part of an insulated top for insulating said compartment, and said sheet metal closure means being secured to said tubular wall of a food storage compartment thereof, said wall structure including spaced apart outer and element in such manner as to form a hermetic ‘ seal about said means for insulating said com terial therebetween, said wall structure having insulating bushings passing through the insulat 15 ing material thereof and extending between said nartment. B. A refrigerator cabinet comprising a box-like structure including an inner liner forming a com 20 partment to_ be cooled within said cabinet and having an access opening, means surrounding said inner liner for insulating said compartment, means forming a supporting structure for the liner and said means for insulating said compart ment and forming as well the outer ?nish walls of the cabinet, vsaid second named means having an opening in one side thereof adapted to regis ter with said compartment access opening of the 30 cabinet and comprising an integral continuously extending one-piece sheet metal tubular element extending continuously across the side of the cabinet having the access opening therein and continuously across two adjacent sides and the 35 back of said cabinet, sheet metal closure means extending across the tubular element 'above and below the said means surrounding said inner liner for insulating said compartment, said sheet metal closure means being secured to said tubular ele ment in such manner as to form a hermetic seal 40 about said means for insulating said compart ment, and portions'of said sheet metal tubular element extending continuously beyond one of said sheet metal closure means and providing at least three walls of a second compartment for 45 enclosing a refrigerating machine adapted to be associated with the cabinet. 9. A refrigeratingapparatus comprising a wall structure adapted to be supported upon a refrig erator cabinet to form a part of an insulated wall '50 of a food storage compartment thereof, said wall structure including spaced apart sheet metal 55 metal members and insulating ma outer and inner sheet metal members, a refrigere ant circulating unit mounted on the side of said wall structure adjacent said outer sheet metal member thereof for disposition exteriorly of the 20 food compartment of the refrigerator cabinet, a cooling element mounted on the side of said wall structure adjacent said inner sheet metal member thereof for disposition within the food compart 25 ment of the refrigerator cabinet, means for se curing a portion of said refrigerant circulating unit to said bushings, means for securing a por tion of said cooling element to said bushings, said securing means cooperating with one another and 30 with said wall structure to form a rigid unitary construction, and said rigid unitary construction being adapted to be bodily removable from the refrigerator cabinet. 11. A refrigerating apparatus comprising a wall 35 structure adapted to be supported by a refriger ator cabinet to form a part of an insulated wall of a food storage compartment thereof, said wall‘ structure including spaced apart metalmembers vand insulating material therebetween, said struc 40 ture having insulating bushings extending be tween the spaced apart metal members thereof, a closed refrigerating system ‘attached to said wall structure and including an evaporator con nected with a plurality of elements forming a re frigerant liquefying and circulating unit, means 45 for securing a portion of said evaporator to said bushings on one side of said wall structure for disposition within said food storage compartment of said cabinet, means for securing a portion of one of said elements of said refrigerant liquefying and circulating unit to said bushings on the op posite side of said wall structure for disposition exteriorly of said food storage compartment, said exteriorly of the food compartment of the re frigerator cabinet, a cooling element'mounted on the, opposite side of said wall structure for dis position within the food compartment of the‘ refrigerator cabinet, means for vsecuring a por securing means cooperating with one another and with said wall structure to form a rigid unitary 55 construction, and said unitary construction be ing adapted to be bodily removable from the re frigerator cabinet. , EDMUND F. SCHWELLER.