Патент USA US2408583код для вставки
Oct. l, 1946. H. E. RosEBRoYoK ET'AL REFRIGERATOR Filed Nov. 5, 1942 2,408,582 ' f z'sheets-sheet 2l Patented Oct. 1, 1946 l OFFICE ì f 2,408,582-l " Ä REFRIGERATQR; ¿ Homer Rosebrook andA Herschel, Powell,4 G‘rreenville,> Mich., assignoiìs§ïbymesne assign-j ments,Y to, Gibson „Refrigerator“ Company, Greenville, Mich., a corporation of _Michigan yApplication November 5, 1942,ser`ià1'N0.,4e4,6o8 1o'oiaims'. (c1. '62;103) l o - - , 1 Y., This invention relates to refrigerators and more particularly to the provision of separatefreezing . shown in Figure 1, taken on substantially the . As is well known, different temperature and humidity conditions are required for the proper preservation of the Various foodstuffs and -other line`2--->2 thereof;> ` ,l . Y Y - Figure `3 is an enlarged sectional view taken articles commonly placed in a refrigerator by the user thereof; , interior of the storage chamber; . ` Figure 2 is a vertical section of the refrigerator and chilling and cooling compartments within the storage chamber. 2 the 'storage chamber door removed to show the For example, a freezing tempera- Y turejis required for the production of ice cubes; 10 a,temperatureïconsiderably above freezing is re quiredí for the preservationof ordinary food stuiîs; and atemperature only slightly above on the-line Figure 4 on the line «l Figure<5 3-3 of Figure 1.;_> isvan enlarged >sectional View taken 4.--4> of Figure 1; and isl .anl enlarged sectional view taken onthe line 5-5‘of Figure 1. ~' Y ' The refrigerator shownin the accompanying drawings includes 'an inner shell or liner I0 which'deñnes a storage chamber, an outer shell I I surrounding the inner shell in spaced relation, insulation I 2 between the two shells, and a break er strip I3 which spans the space between the freezing with relatively high humidity. is best suited for the chilling and preservation of salads, desserts and certain meats; - -Where a single evaporating unit is employed, difficulty has been experienced heretofore in ob taining the diiferent temperatures and humidity free edges of the shells and defines a door open conditions required for freezing, cooling and ing for the storage chamber. An insulated door i4 .for closingthe door opening is secured to the chilling. »Itis the principal object ofthis in refrigerator in the V>usual manner. vention to provide a novel and inexpensive ar rangement whereby such different conditions can , begreadilygobtainedby the use of a single evapo .. As best shown in Figuresß, 4 and5, the breaker strip I3 overli'es4 and is secured to the edge por tionslpf v,tneinner and outer shells by screws I5. rating unit. This »objectV is attained by dividing .Í`,A~verticalshield lIii is Vdisposed within the -storagechamberfand so- arrangedras to vclose the the 'interior of theÁ storagechamber into a plugl rality of compartments, disposing lthe refrigerant Á upperlportionofrxthe door opening. The_shield evaporating unit in one of the compartments, and is of'génerally pan shape including'a flange I‘I e providing for a limited circulation of air between across its top, _which is received between the the several compartments;` , . 30 breaker'strip ,ISÀÍand the inner shell I0 and is se vMore specifically, the principal object of the cured in position xby. the screws I.5_ (see Figure 5). shield to'close a portion of the door opening, ar ranging substantially imperforate. partitions be Alongfitsy Vertical edges the Vshield is provided with llanges'flß whichwfare' received between the _edge of breaker strip' I3 and theinner shell I0 (see hind the shield to form a pair of spaced compart- „ Figureïßlj."V Acrossv its .bottom edge' the shield is invention» is attained by . providing a vertical ments, and placing the refrigerant :evaporating provided` with~ ay generally kU #shaped irib _I 9 which lseI'-v.es_„v to strengthen the shield in that region. unitvin the upperof said compartments. -The Thus,`fit will'belseen that While the shield ,only Vertical shield serves to prevent the loss of cold covers the upper"part of the door opening to the airmfro'm these compartments when MVthe `refrig erator door is opened and aids> in controlling and 40 storage chamber, itI does completely -cover that part', extending ‘to and’being supported by the directing the now of air within the storage cham walls „which define _the upper part of the door ber between andY among the several compart ments. It also enhances the appearanceof the Way. , A . ' , - ' >ASI` previously mentioned, the shield I 6 is of refrigerator. By providing separate doors in the 45 generallylpan shape, the vvcentral portion being vertical shield which afford access to each of. 1 disposed'reai'wardly of the perimeter. Substan the compartments therebehind independently tially midway between its upper and lower ex of the other, a more eñ‘ìcient and uniform refrig Aerating effect is obtained in each of these com partments. Y _ l - Y Other objects'and advantages of the inven-v tion will become apparent from the following description when read in connection with the ac companying drawings, wherein: ' . treßrniti'es the shield is provided with an outwardly projecting horizontally extending U-shaped rib 50 2lb-generally similar tothe rib I9, at the bottomofthe shield. Above the rib 2l)A and in 'spaced _relationto the „edges of .the shield there ,isppro vi'o`le‘dfßaA horizontally elongated opening injthe shield which is' defined by arrearwardly extending , Figure 1 is a front view of >a refrigerator with 55 ñangeîZI. 4 Between ribsy I9'and20 and‘in'spaced 2,408,582 4 horizontal extent to locate the perimeter thereof in closely spaced relation to the side walls of the storage compartment and the shield I6 to provide relation to the sides of the shield there is pro vided another horizontally elongated opening in the shield which is defined by the inwardly ex for but a limited circulation of air between the tending flange 22. The upper opening in the shield I6 is closed by 5 space above and below this partition. The space between the rear edge of the >shelf and the adja cent liner wall being greater than the space be tween the other edges. of the shelf and the ad jacent vertical walls to aid in directing the cir a door 23, and the lower opening vis closed by a door 24. Preferably the doors are formed of glass or other transparent material and supported by channel shaped frames 25 and 26. The frames are connected to the shield IS by hinges as shown 10 culation of air between the spaces above and be low the shelf. While some moisture may collect whereby the doors may be swung outwardly about on the under surface of pan 33, such will not be a pivot line along the bottom edge thereof (see the case with `shelf 34. Figure 3). Adjacent their upper edges the doors ' Partition 34 forms with the liner I0, the par are provided with handles 21 and 28 respectively. The shield I@ together with the doors 23 and 24 15 tition 33 and the shield _I3 a chilling compart ment immediately below the freezing compart form a substantially imperforate vertically ex ment to which access is had through door 24. tending partition across the upper part of the The remainder of the storage chamber below the door opening which serves as an auxiliary closure partition 34 constitutes a cooling compartment, for that part of the opening. Behind the shield I6 and in the uppermost part 20 and is provided with conventional shelves 35 formed to provide for circulation of air between of the storage chamber there is located a refriger the lseveral spaces defined thereby. Access is had ant evaporating unit comprising a generally tu to the cooling compartment by opening the main bular shell 2.9 and an evaporator coil 3U secured refrigerator door I4. to the outside of the shell. The evaporating unit From the foregoing description it will be ap is secured in place in a conventional manner by 25 parent that the single evaporator will maintain hangers extending downwardly from the top of the freezing chest itself at a lower temperature the liner IU. The evaporating unit is substan than the remainder of the storage chamber; that tially coextensive with the horizontal cross-sec he chill compartment (the space between pan tion of the storage chamber and is so arranged that the front and open end of shell 29 is aligned 30 33 and shelf 34) by reason of its close proximity to >the evaporator and the limited circulation of with the opening in the shield I6 which is closed air between that space and the space occupied by the evaporator, will be maintained at a tem by door 23. Thus, access may be had to the in terior of shell 29 for the installation and removal of >freezing trays or substances to be frozen. perature only slightly above freezing; and that Liquid refrigerant is supplied to the evaporator 35 the food storage or cooling space below the shelf 34 will be maintained »at atemperature somewhat coil 3_0 by a capillary tube 3| and gaseous re higher than that of the remainder of the storage frigerant is withdrawn from ‘the evaporator coil chamber by reason of the fact that the circula tion of air between the space above and below Below the evaporator and in closely spaced re 40. the shelf is restricted. Furthermore, it will be apparent that by reason of the different temper lation thereto 4,is a drip pan 33 in the form of a atures prevailing in the different spaces the rela substantially „imperforate partition. Pan 33 has tive humidity in the chilling compartment (the upturnedflanges about its perimeter and is of a space between shelf 34 and pan 33) will be rela horizontal extent sufficient to collect moisture through a suction line 32 in a conventional man ner by >a condensing unit, not shown. t-iveiy higher than the humidity in the cooling or storage `compartment comprising the space be ing. Thus, the rpan 33 is also substantially co low partition 34. Thus, merely‘by the use of -a extensive horizontally with the cross-section of novel arrangement of partitions and _baffles it is the storage chamber. possible to obtain different temperature and dif .Pan 33 `is supported _at the >frontby connection with the >evaporator and at the rear by a support 50 ferent humidity conditions _within separate zones of a refrigerator storage compartment by means secured to the. liner. The pan is preferably in of a single refrigerant evaporator located in but clined downwardly from the front to the rear and 4Ul which Ydrips from the evaporator during defrost one -of said zones. ' is provided with a small opening (not shown) at The scope of the invention is indicated in the the lowest point to drain off the moisture col lected therein into any suitable receptacle. This 55 appended claims. y inclination also serves to promote the circulation We claim: of air along a predetermined pathway. `Provision 1. Avmechanical refrigeratorcomprising a stor age chamber, a `refrigerant evaporator disposed is made for the >limited circulation of ,air lbetween in the chamber, a drip pan disposed below and in the space above and below the pan 33 by the slight spacing of the yedges of the pan from the 60 closely spaced relation to the evaporator lfor col lecting the drip from the evaporator, a substan liner walls. In order to increase the Ycirculation tially imperforate food storage shelf positioned of air between these two spaces it may also be below vand in spaced relation to the drip pan, said desirable to provide the pan 33 with `an opening pan and said shelf being constructed and ar 33a toward the front thereof. The opening 33a is surrounded'byan upstanding flange to prevent 65 ranged in relation to the storage chamber to pro Vide ypassageways adjacent the perimeters there the moisture .collected in the pan from dropping of for a limited >circulation `of Vair between the through this_opening, -Also, the pan is preferably spaces thereabove and therebelow, the cross .fsee provided with an upstanding baille 331) over the tional area of the passageway for the circulation opening to prevent the moisture .which drips `from the evaporator during defrosting `from falling 70 of air adjacent one portion of the perimeter of through the opening. the ,shelf being larger than the cross sectional area of the passageway adjacent the vcorrespond _ _Positioned below _the drip vpan 33 is a horizon tally extending irnperforate shelf in the form of a .partition '34 which issupported from the ‘liner ing portion of the perimeter o_f the _drippan, and , the cross sectional area of the lpassageway adja bv the usual shelf supports. Partition 34 is 0f a 75 cent another and remote portion of the perimeter É of the shelf being smaller than the cross sectional area of the passageway adjacentthe correspond ing portion of the perimeter of the drip pan. _ 2. A mechanical refrigerator as defined in claim 1 wherein the storage chamber is provided with an access opening and wherein means are provided closely adjacent the edge of the shelf nearest the access opening for restricting the circulation of air between the access opening and the space above the shelf. 3. A mechanical refrigerator as defined in claim 1 wherein said storage chamber is provided with an access opening, a door for closing the access opening, and means in addition to the - 6 8. A mechanical refrigerator comprising a storage chamber having an access opening, a re frigerant evaporator disposed in the chamber, a drip pan disposed below and in closely spaced relation to the evaporator, said drip pan being constructed and arranged in relation to the stor V age chamber to provide for limited circulation of air between the spaces thereabove and therebe low, a substantially imperforate food storage shelf positioned below and in spaced relation to the drip pan, said shelf being constructed and ar ranged in relation to the storage chamber to pro vvide for a limited circulation of air between the spaces thereabove and therebelow, and vertically door and located closely adjacent the edge of the 15 arranged shield means `interposed between the shelf nearest the access opening for restricting circulation of air between the access opening and -access opening and the space above the food access opening. stantially imperforate partitions intermediate the storage shelf to restrict circulation of air be the space above the shelf. tween the access opening and said space and be 4. A mechanical refrigerator' as defined in tween the spaces above and below the shelfin claim l wherein the storage chamber is provided 20 the zone adjacent the access opening, said drip with an access opening, a door for the access pan being constructed and arranged to collect opening, and a shield interposed between the ac drip from the evaporator and from the upper cess opening vand the space above the shelf ar portion of said shield means. ~ ranged closely adjacent the edge of the shelf 9. A mechanical refrigerator comprising a nearest the access opening to cooperate with the 25 storage chamber divided into an upper compart shelf to restrict circulation of air between the ment, an intermediate compartment, and a lower ` spaces above and below the shelf adjacent the compartment by a pair of vertically spaced sub 5. A mechanical refrigerator comprising a stor age -chamber having an access opening, a refrig 30 erant evaporator disposed in the upper part of , the storage chamber, a drip pan disposed below , and in closely spaced relation to the evaporator, Y top and bottom of the chamber, said partitions forming the top and bottom walls of the inter mediate compartment, an evaporator in the upper compartment, said intermediate compartment having an aperture in the top adjacent a hori zontal extremity thereof and within the vertical in relation to the storage chamber to provide for 35 projection of the evaporator for the passage of said drip pan being constructed and arranged a limited circulation of air between the spaces air from the upper compartment to the inter thereabove and therebelow, a substantially im mediate compartment, said compartment having perforate food storage shelf positionedbelow and another aperture at the perimeter thereof remote in spaced relation to the drip pan, said shelf be from said first mentioned aperture for the pas ing constructed and arranged in relation to the 40 sage of air from the intermediate compartment storage chamber to provide for limited circula yto the lower compartment. tion of air between the spaces thereabove and 10. A mechanical refrigerator comprising a therebelow, and vertically arranged means in chamber, an evaporator disposed in said cham terposed between the access opening and said drip ber, a drip pan disposed below and in spaced re pan and said shelf to cooperate therewith to re 45 lation to the evaporator and arranged to collect strict the circulation of air between the access the drip therefrom, and an imperforate shelf dis opening and the space above the shelf and be posed below the drip pan and in spaced relation tween the spaces above and below theshelf in thereto, said shelf and said drip pan being sub the zone adjacent the access opening. ` ' stantially coextensive horizontally with the cham 6. A mechanical refrigerator as deiined in 50 ber, said drip pan being constructed and ar claim 5 wherein said means interposed between ranged in relation to the chamber walls and the the access opening and the drip pan and the shelf Vevaporator to provide an air passageway adja comprises a shield which-is itself provided with cent one edge thereof substantially within the movable portions affording access to the space vertical projection of the shelf, said shelf being above the drip pan and to the space between the 55 constructed and arranged to .provide an air pas drip pan and the shelf, respectively. sageway adjacent one edge thereof located at 7. A mechanical refrigerator as defined in least partially within the vertical projection on claim 5 wherein the drip pan is provided with an said drip pan, whereby to permit the circulation opening adjacent one edge thereof for the circu of air horizontally through the space between the lation of air between the spaces thereabove and 60 Vshelf and the drip pan. therebelow which opening is surrounded by a Y HOMER E. ROSEBROOK. flange of lesser height than the sides of the pan. HERSCI-IEL F. POWELL.