US2330913A - Refrigerating apparatus - Google Patents

Description

Oct. 5, 1943'. L. A. PHlLlPP 2,330,913

REFRIGERATING APPARATUS FiledAugfB, 1940 6 Sheets-Sheet l INVENTOR. & w Lqwlgzncg Ii. PqlLoPP BY am ATTORNEY.

Oct. 5, 1943. L. A. PHILIPP 2,330,913

" REFRIGERATING APPARATUS Filed Aug. 8, 1940 6 Sheets-Sheet 5 A7. .72 J6 A96 INVENTOR. I LAWRENCE Pl-(ILJPP MQM \TTORNEY.

Oct. 5, 1943. Y L PHILIPP 2,330,913

REFRIGERATING APPARATU Filed Aug. 8, 1940 6 Sheets-Sheet 4 fig II II INVENTOR. Lqmgzqcz PI-(ILIPP A TTORN E Y.

Oct, 5, 1943. u... A. PHlLlPP 4 2,336,913

REFRIGERATING APPARATUS Filed Aug. 8, 1940 6 Sheets-Sheet 6 INVENTOR.

Lav/13am: Q. PmuPP IJYIQZI I;

ATTORNEY.

?atented Oct. 5, 1943 REFRIGERATING APPARATUS Lawrence A. Philipn. Detroit, Micln, assignor to Nash-Kelvinator Corporation, Detroit. Micln, a

corporation of Maryland Application August 8, 1940, Serial No. 351,834

6 Claims.

This invention relates to refrigerating appaparatus of the multiple temperature type.

One of the objects of my invention is to provide a new and improved arrangement for freezing substances, and for cooling circulating air in a refrigerator cabinet so as to maintain a relatively high humidity within the cabinet.

Another object of my invention is. to provide an improved refrigerating system wherein large quantities of substances may be frozen and at the same time circulating air for cooling foods and the like may be cooled without undue dehydration of moisture from the air and without the collection of frost and ice upon the said system which would cause inoperative conditions periodically for defrosting. Another object of my invention is to provide an improved refrigerating system for freezing substances and for the preservation of foodstuffs such as meats which require somewhat lower temperature than other foods, and to arrange the system in such a way that the meatsor the like may be refrigerated to a point slightly above the freezing point of water and, if desired, may be readily refrigerated below the freezing point of water by simply adjusting the refrigerating apparatus to accomplish such a function.

Another object of my invention is to provide a refrigerant evaporating element with removable panels, or shelves, which unit operates for freezing substances and for the cooling of foodstuffs slightly above the freezing point of water, and

when desired providing storage for such other foodstuffs at temperatures below the freezing point of water by simply removing the panels.

Another object of my invention is to provide an improved refrigerating system which includes heat absorbing means having the different portions thereof separated by a fixed restriction which provides for the operation of one portion at a higher pressure and temperature than the other portion. and to provide for the flow of liquid refrigerant to the heat absorbing means by a small diameter tube, and to pass the evaporated refrigerant in thermal heat exchange with said small diameter tube so as to pre-eool the liquid refrigerant in the cabinet.

Another object of my invention is to divide theinterior of the food storage compartment by a casing so as to provide a freezing zone, and to provide for refrigerating the air in the food compartment and the freezing zone by heat absorbing units positioned in the zone and in said compartment, and to support a drip receiver by said casing for collecting drip water from the various heat absorbing units.

Another object of my invention is to provide an improved refrigerant evaporating element for cooling circulating air and which consists of vertically extending spaced apart fins and a refrigerant evaporating conduit extending therethrough. with the conduit being so arranged that a lesser area of fin is associated with the conduit in the upper region thereof than in the lower region thereof.

Another object of my invention is to provide for the ready removability of an entire refrigerating system including three sections of heat absorbing elements and a motor-compressor-condenser unit from the cabinet having a food storage compartment, a freezing compartment and a machine compartment.

Another object of my invention is to provide a new and improved drip trough which has the general formation of a V.

Another object of my invention is to provide an improved control device for the aforementioned refrigerating system which includes thermo-sensitive means having a portion extending into the freezing zone and another portion extending into an air cooling zone, and arranged so that eachof said portions cooperate to control a power device for the control element.

Another object of my invention is to provide means for ventilating the insulation of the cabinet adjacent an ice freezing section of heat absorbing means so as to freeze out any moisture from the air in the insulation by its attraction to the ice making element.

7 Further objects and advantages of the present invention will be apparent from the following descriptlon, reference being had to the accompanying drawings, wherein a preferred form of the present invention is clearly shown.

In the drawings:

Fig. 1 is a front view in elevation of my improved refrigerator showing a portion broken away;

Fig. 2 is a diagrammatic illustration of the refrigerating system utilized for refrigerating the refrigerator shown in Fig. 1;

Fig. 3 is a view-taken along the line 3-3 of Fig. 1;

Fig. 4 is a view taken along the line 44 of Fig. 3;

Fig. 5 is a view taken along the line 5-5 of F 8- 1 Fig. 6 .is a view taken along the line 6-8 of Fig. 7 is a perspective view of my improved heat absorbing means;

Fig. 8 'is a rear view of the lining of the refrigerator s owing a partition element secured within the interior of the lining;

Fig. 9 is a perspective view of a removable bafiie;

Fig. 10 is a view taken along the line III-III of Fig.

Fig. 11 is a fragmentary view taken in the direction of the arrows I I-I I of Fig. 3;

Fig. 12 is a view taken along the line I2I2 of Fig. 11;

Fig. 13 is a view taken along the line I3-I3 of s.

Fig. 14 is a view taken along the line I4--I4 of Fig. 13;

Fig. 15 is a view of the V-shaped drip trough; and

Fig. 16 is a view in elevation showing a portion broken away of a switch element used for controlling the operation of my refrigerating system.

Referring'to the drawings, Fig. 1 discloses my improved refrigerator cabinet, designated in general by the numeral 28. Within this refrigerator cabinet I have disposed refrigerating system disclosed in Fig. 2.

Referring to Fig. 2, my improved refrigerating system includes a motor compressor unit 24, con-- denser 28, high temperature heat absorbing sections 28 and 38, low temperature refrigerating sections 32, 34, 88 and 38, and an accumulator 48. Evaporated refrigerant is withdrawn from theaccumulator 48 through a vapor return conduit 42 whence it passes to the motor compressor unit 24 wherein it is compressed and from which it is delivered through conduit 48 to condenser 28. In the condenser it is li'quifled and from which it is delivered to heat absorbing section 28 through a small diametertube 48 after first passing through a strainer device 88. The refrigerant passes from the section 28 through conduit 82 to the section 38. Before passing to the section 32 from section 38, the refrigerant must pass through a fixed restriction, or small diameter tube 88. This reduces the pressure of refrigerant flowing to the sections 32, 84, 38 and 38 so as to maintain ahigher temperature in the sections 28 and 38 than in sections 32, 3.4, 38 and 38. This system is of the non-flooded type wherein droplets of liquid refrigerant are passed into the heat absorbing sections, but due to the absorption of heat very little, if any, liquid refrigerant passes into the accumulator 48. Thus, the refrigerant passing through conduit 42 is'gaseous refrigerant and,- as 'di'sclosed, I have arranged the conduit 42 in thermal heat exchange relation with the small diameter tube 48 so as to cool the liquid refrigerant passing through the tube 48. These two conduits may be secured together by solder if desired.

Referring more specifically to the drawings, and more particularly to Figs. 3 and 4, the refrigerq ator cabinet includes an outer casing 88 and an inner liner 82. Insulation 84 is interposed between the walls 88 and 82 to insulate a food storage compartment 88 formed by the inner walls of the liner 82. The outer casing extends down wardly to provide a machine compartment 88. A base 18' is provided for the cabinet and is open as at I2 to provide for the free circulation of air through the machine compartment.

Within the machine compartment I have disposed my motor compressor unit 24 and consorbing.

denser 28. The motor compressor unit is mounted upon an angle iron 18 which is supported by the base 18. At the rear of the cabinet I have provided a flue 88 for aiding and setting up a natural draft of air over the motor compressor unit and condenser to take the heat of condensation out of the machine compartment 88. It will be noted that on the inner side of the flue 88 I have provided insulating material 84, which may preferably be of sound absorbing characteristics. As indicated, the insulation is formed of sheet cork. It may, however, be of any suitable fibrous material which has characteristics for sound ab- The front of the cabinet is cut away as at 88 so as to provide an opening for gaining access to the machine compartment. This opening is closed by a door 82 which is formed of double walled sheet metal having ends 84 and 88 which carry gasket material 88. These ends are turned in toward each other and are spaced apart so as to receive an angle member I88 carried by the base 18. By this arrangement it is possible to tilt the door outwardly away from the machine compartment at its upper edge. The angle member I88 may extend from one side of the machine compartment to the other if desired or part way so that it will be'sumcient for supporting the weight of the door. On the rear side of the door I have provided a vegetable bin I84'which is secured to the door in any suitable manner and is tiltable with the door. Thus when the upper part of the door 82 is tilted outwardly away from the machine compartment, access may be had to the interior of the vegetable bin. The bin includes bottom wall I88, side walls I88 and rear wall II8. Secured to the rear wall is a slab of insulating material 2, which, as indicated, is formed of sheet cork. This insulating material II2 like insulating material 84 may be of any suitable material so long as it has heat absorbing characteristics as well as insulation qualities so as to insulate the vegetables from the heat of condensation as well as absorb noises created by the motor compressor unit. This vegetable bin may extend from one side of the machine compartment to the other. As will be noted, the condenser is placed on an incline, with the lower portion being directly over the lowermost portion of flue 88 while the upper portion of the condenser is positioned slightly within the machine compartment 88. As will be noted in Fig. 2, the condenser is formed of a serpentine coil having spaced apart fins therein so as to be very effective in the dissipation of heat while permitting the free flow of air thereabout. Since the lower part of the cabinet is open at 12 and the lower part of the flue 88 is open to the atmosphere, air may freely pass up through the machine compartment and the flue and over the motor compressor unit and condenser and out through the flue to thus remove the heat of condensation. By placing the inner wall H8 of the vegetable bin at an angle it tends to guide the flow of air toward the motor compressor unit as the air travels upwardly due to the natural draft flow of air. Also, as air passes upwardly through the flue over the lower portion of the condenser, it tends to create an aspirating effect to draw air through the machine compartment over the motor compressor unit at the upper portion of the condenser.

The insulation 84 includes slab I28 in the bottom wall, I22 in the rear wall, I24 in the top wall and I28 and I28 in the side walls. As indicated in the drawings, this insulation is shown as slabs of cork. However, any suitable type of insulation may be used such as fibrous material, Rock Wool or the like. In addition, insulation I38 is provided in the rear wall so that it may be read ily removed. Conduits 42 and 48 enter the rear wall of the refrigerator and pass into the food compartment through insulation I 38. t1! the insulation is made of cork, such cork may be slotted to receive the conduits and to permit removal of the insulation from each side of the conduits or I if it is loose fibrous material such insulation may be readily removed by simply removing rear panel I3l of the cabinet by removing nuts I3 3 from bolts I38. On the inner side of the insulation 9% is a removable panel Ida which may be readily removed by removal of nuts I 42 from bolts Md. The panel I418 carries the heat absorbing portion of the refrigerating system and includes sections 28, at, 32, 34, 36, 38 and accumulator Gt, as is clearly shown in Figure 7. The sections 28 and at are utilized for cooling circulating air within the food-storage compartment while the other sections of the heat absorbing means are utilized for freezing ice in an ice freezing zone within the interior of the metal casing I46. The casing I48 is formed preferably of stainless steel or steel having a coating of vitreous enamel in the general shape of a U and includes upright walls 8 and bottom wall I50. The upright walls have their ends secured to'the top wall of the liner 8% and the rear edges of the upright walls are in en-.

gagement with the rear wallof the linertd. The

1 rear wall of the liner 62 is provided with an openand 28. These sections are the same and so only one will be described. The sections include vertically extending fins 200 through which a refrigerant conduit 282 extends. This conduit is arranged so that parallel runs extend through the upper portions of the fins in a horizontal plane and parallel runs extend through the lower portion of the fins on a vertical plane. This provides for'more refrigerating coil in the upper portion of the fins per fin area than in the lower portion. The reason for this arrangement is that warm circulating air in the food storage compartment 62 comes in contact with the uppermost portion of the fins first and tends to warm up the fins at that point. Consequently the fins may be cooled to a lower temperature at that point than at the lower portion of the fins where the air is somewhat cooled before it reaches that point. By this arrangement it is possible to have a small compact fin area and at the same time direct the warm air over such fin surfaces so that when the refrigerating system is in operation the collection of frost and moisture on the fins will be evenly distributed so that during periods when the compressor is not operating the frost and ice accumulated on the fins will entirely melt off before the compressor again resumes operation. As will be noted, the U-shaped member I84 and the ice making sections 32, 38, 36

3d and 38 are disposed within the casing I46 in ing I5l which is closed by the removable panel I48. The upright walls I48 extend vertically across such opening. This opening I54 is provided for the ready insertion or removability of the heat absorbing sections of the system as is hereinafter more fully described. The bottom wall I56 of the casing I46 is provided with upwardly directed corrugations I60 upon which may be inserted receptacle 182.. The bottom wall is also provided with an opening I84 to permit drip water from the refrigerating sectionsin the casing to fiow from the casing when such sections are defrosted. The casing IE8 has secured thereto guideways I10 for receiving lips I'll! of drip pan I14. This enables the drip pan to slide on the guideways I!!! so that it may be readily removed from beneath the casing. Drip collectors I78 are also carried by the casing I48 to collect any moisture that may drip from the casing and conduct such moisture to the drip receptacle. The drip collectors I18 and the guideways I18 are secured to the casing by means of bolts I88.

The entire heat absorbing means is carried by the removable wall I and includes portions for spaced relation thereto. The accumulator 48 is also positioned within the casing I48. As will be noted in Figure 3, the accumulator is elliptical shape in cross section and includes an inlet pipe 220 near the lower portion of the accumulator and an outlet conduit 222 adjacent the upper portion of the accumulator. By this arrangement any liquid that may get into the accumulator 40 would enter near the bottom thereof while the gaseous refrigerant would leave by the outlet 222 from the upper part of the accumulator. The bottom wall of the U-shaped member. shelf I88 and shelf I86 are all provided for supporting ice making receptacles 224. It will be noted that when the U-shaped member I84 is positioned within the casing I46 that it is positioned somewhat above the bottom wall I of the casing.

ice making and air cooling. Theportion utilized for ice making includes a U-shaped sheet metal member I84 of single thickness which has se cured thereto an upper shelf I86 and a shelf I88 positioned therebelow. The shelf I88 is removably mounted to the U-shaped member I84 so that it may be readily removed from the said member. The removable shelf is carried by lugs I90 and is provided with slots I92 so that the removable shelf may be lifted upwardly and then removed through the open front of the U-shaped member I84. To the U-shaped member is secured the heat absorbing sections 32, 34, 33 and 38. The sections 32 and 36 are secured to the side walls of the member I84 and the section 34 is secured to the bottom wall thereof while the section 38 is secured to the upper shelf of the member I84. On each side of the U-shaped member are located heat absorbing sections 88 This provides ample space for the receptacle I62. The receptacle I62 is provided with a lid 228 which may be loosely fitted on the receptacle I62 to provide ventilation therebetween or may tightlyengage the upper edge of the receptacle and have one or more small holes (not shown) positioned in the lid so as to give ventilation to the foodstuff stored therein. Preferably the receptacle I62 is provided for the storage of meats and at, for example, slightly above the freezing point of water. This is accomplished by operating the refrigerating sections 32, 34, 36 and 38 suificiently low enough for freezing substances but due to a removable panel 230 carried by flanges 234 on the bottom of the U-shaped member I84 the temperature therebelow is above the freezing point of water. This panel acts to insulate the direct effect of the cooling of the section 34 and maintains the temperature therebelow approximately at 34 degrees F. When itis desired to refrigerate the space below the panel 230 to a removable shelf I88 may be removed and the receptacle I62 may be inserted upon the bottom wall of the U-shaped member directly below the shelf I86 where the receptacle will be cooled to somewhat. below the freezing point of water. Thus it is possible to shift the .receptacle I62 to various positions within the casing and provide large storage spaces for the freezing of meats or the preservation of foods below the freezing point of water or slightly above the freezing point of water as desired. The sections 28 and 88 are used for cooling the circulating air within the food storage compartment. Removable baffles 248 are positioned in front of the sections 28 and 88'for directing the fiow of air over the sections 28 and 88. The baflles include imperforate portions 242 and slotted portions 244. Side flanges 246 are provided with arcuate slots 248 for insertion over lugs 258 carried. by the casing I46 on one side and lugs 252 carried by the liner 62 on the other side of the baille. It-will be noted in the drawings that by simply raising the baffles upwardly the slots 248 disengage the lugs so as to permit the battles to be readily removed. Immediately below the sections 26 and 38 are provided drip troughs 268 which are provided with louvers 262 in each side wall. The drip troughs include aprojection 264 which extends over the drip collectors I16 for conducting the drip water from the sections 28 and 88 to the drip pan I14. The drip water first collects in the trough 268 whence it passes over the projection 264 to the drip collector I16 whence it passes into the drip pan I14. The troughs include straps 266 and 268. These drip troughs are removably connected to the rear wall of the liner by means of bolts 218. These bolts pass over the open end slot 212 in strap 268 and key-hole type slot 214 in strap 266- of trough 268. Suitable nuts 288 engage bolts 218 to clamp the troughs to the rear panel I48. A preferred way of securing the easing I46 to the inner liner 62 is as disclosed in Fig. 11. The casing I46 has an inturned flange 288 which is secured to the upper wall of the liner 62 by bolts 282. Interposed between the flange 288 and liner 62 is a thin layer of soft rubber 284. The soft rubber serves to seal the upper edges of the casing and the liner. As will be noted in Fig. 12, a gusset plate 286 extends across flange 288 of the casing I46. This gusset plate may be secured to flange 288 in any suitable manner such, for example, as by welding. A gusset plate of this type is provided for supporting the U-shaped member I64 at the front thereof by bolts 288 and nuts 281, the rear of the U-shaped member I84 being secured to panel I48 by means of bolts 888.

Also within the food storage compartment there is provided slidable shelves 884, which may be of any suitable open work construction. In addition, there is provided sliding receptacles 886, which may be of any suitable construction, and are used primarily for the storage of vegetables. Supported above the receptacles 886 are transparent glas plates 888. The glass plates are independently suspended and are slidably removable independent of the receptacles 886. Likewise the receptacles 886 are independently suspended and are slidably removable and independent of glass covers 888.

Within the casing I46 andsecured to the top wall of the liner 62 is a switch control element 8I8. This switch control element is of the pressure operated type well known in the art and includes a power element in the form of an e'x- Y pansible bellows 8 (see Fig. 16). To the bellows is connected a small diameter conduit 8" which is provided with branch 8| 8 and branch 8I8. To the branch 8I8 is connected 9. thermal bulb 828 and to branch 8I8 is connected thermal bulb 822. The two thermal bulbs and the two branch conduits as well as conduit 8I6 are connested in open communication with the bellows 8I4 and with each other. Preferably, the conduits 8I6, 8 I 8 and 8 I 8 are of very small diameter. Within the bellows 8I4, conduits 8I8, 8I8 and 8I8 and thermal bulbs 828 and 822 is confined a volatile fluid which serves to control the operation of the switch element by expansion and contraction'of the bellows 8 I 4 in the well known manner. As shown in the drawings, the thermal bulb 828 is primarily responsive to the temperature of the heat absorbing section 88, and the thermal bulb 822 is responsive to the temperature of the U- shaped member I84 and heat absorbing section 86. Thus, when the temperature of heat absorbing section88 rises to a predetermined point, the volatile fluid therein will initiate the operation of the switch to control operation of the motor compressor unit. The switch 8I8 is operatively connected with the electric motor of the motor compressor unit to control the electric circuit thereof by electric conduits (not shown). The switch completes such electric circult when there is a demand for refrigeration and interrupts such circuit when the demand has been satisfied. As the temperature of the U- shaped member I84 and heat absorbing section 86 rises to a predetermined point, the thermal bulb 822 will initiate operation of the switch to start the motor compressor unit.

In the operation of my refrigerating system, I have arranged so that sections 28 and 88 of the heat absorbing means cools the circulating air in the food storage compartment. Preferably, the switch 8I8 is adjusted so that during normal operationseetions 28 and 88 collect a slight fllm of frost on the fins and refrigerant conduit during operation of the motor compressor unit, and this slight film of frost melts off when the compressor unit is not operating. Due to the fixed restriction 56, which is interposed between the section 88 and section 32 of the heat absorbing means, the pressure in sections 28 and 88 is somewhat greater than in the ice making sections 82, 84, 86 and 88. Thus it is possible to cool the circulating air in the food storage compartment and defrost the cooling elements by the cycles of refrigeration while at the same time freeze ice by another portion by the heat absorbing means. Due to the fixed restriction 56, the pressure and temperature in the ice making sections is sufllciently low during operation of the motor compressor unit to provide for the rapid freezing of ice in the receptacles 284. While the sections 84 and 88 are adequate for the rapid freezing of ice in .the receptacles placed thereabove, I have also provided sections 82 and 86 along the side walls of the U-shaped member I84 so as to aid in retaining a low temperature within the confines of the U-shaped member I84 when the motor compressor unitis not operating. This is due to the fact that with these added sections 82 and 86 the temperature within the confines of the U-shaped member I84 is pulled down sufficiently low as to hold its freezing temperature until during periods when the compressor is not operating so that such freezing temperature is maintained and until the motor compressor unit resumes operation. By arranging the switch 3M so that it is responsive both to the high temperature as well as the low temperature heat absorbing units, it is possible to initiate operation of the motor compressor unit when either the ice making or box cooling sections require refrigeration. In some instances, it may be desirable to omit the conduit 3I9 and' thermal bulb 322. At this time it is desired to point out that the switch 3H1, which includes bellows ti t, is positioned part way inside the casing M6 where the low temperature air confined in the casing comes in contact with the bellows 3M. Consequently, the thermal bulb 320 may rise to a temperature which would normally initiate operation of the switch, nevertheless that operation may be delayed for a brief period of time due tothe chilling down of the fluid in the bellows did. The chilling down of the fluid in bellows tit has a tendency to counteract the effectiveness of the rising temperature of the fluid contained within the thermal bulb 320. This sometimes is advantageous in that when such condition occurs it is evident that the temperature in the casing I46 is such that it retains the frozen substances therein in their frozen condition and that delayed action of the switch would result in melting of frost and ice from the fins of the air cooling sections of the heat absorbing means. Thus the system is balanced so as to properly cool circulating air in the food storage compartment and maintain substances in their frozen condition as well as initially freezing such substances. As will be noted, the ice making sections of the heat absorbing means, as well as the U-shaped member I84, is spaced somewhat from the walls of the casing I46. This is so arranged that the circulating air confined within the casing I46 will not cause the cooling of the walls or casing I46 to a very low temperature. By proportioning the ice making sections and spacing them from the walls of the casing, as disclosed herein, it is possible to operate my refrigerating system without the collection of moisture upon the outer surface of the casing I45 during days when the relative humidity is below a certain value and never 'atsuch a temperature so as to collect frost on the outer surfaces of the casing I46. The casing I46 also includes an intumed flange 325 aboutits front face which is engaged by a door 32]. The door includes panel 329 and carries a rubber sealing gasket 33I which engages the flange 325 to seal the front of the casing I46. Secured to the panel 329 is a panel 325 arranged in spaced apart relation so as to provide a dead air space for the door. This limits the flow of heat through the door into the interior of the casing I46. The door is hinged as at 340 so as to permit ready access to the interior of the casing. Since the casing I48 is sealed on top, rear and front walls, the circulating air within the food storage compartment cannot enter the interior of the casing and consequently the ice making sections of the heat absorbing means cannot extract moisture fromair other than that which is confined within the interior of the casing I46. This small volume of air causes a very slight accumulation of frost upon the ice making sections of the heat absorbing means and U-shaped member I 84, thus requiring defrosting of such sections and mem-- her only after long periods of operation. In view of the fact that the heat absorbing sections for cooling the circulating air defrost during periods when the compressor is not operating between each cycle of operation. it is un-' necessary to shut the system down for defrosting.

When the ice making sections of the heat absorbing means are defrosting, the "drip water drops to the bottom wall I50 of the casing I48 or falls upon the lid of receptacle I62 whence it flows to the bottom wall I60, and due to the corrugations I68 the drip water may freely flow under the receptacle I62 and pass through opening ltd to drip pan I16. a

As will be hotel in Fig. 6, rear panel I40 is provided with openings 350. These openings 3% provide for open communication between the air within the insulation and the interior of the casing 5 36. Thus if there is any moisture within the air in the insulation, it will not be condensed out upon the rear wall of the panel I40 and cause the insulation to become wetted, but instead the moisture along with the circulating air in the insulation will pass to the ice making sections of the heat absorbing means and such moisture will readily be frozen out of such air. In cooling the air in the food storage compartment, the circulating air passes upwardly and through the slots 2% in baihes 340. The air is then cooled by sections 28 and at and fiows down wardly into troughs 260 and through the louvers 262 into the food compartment below the troughs. This gives two distinct circulatory paths of air in the food compartment. The casing M6 also does some cooling of the air in the food storage compartment.

When it is desired to remove the refrigerating system from the cabinet all that is necessary is to remove panel 534, insulation I30, panel I40 and nuts 291 from bolts 298 and the entire heat absorbing section as shown in Fig. 7 may be removed from the cabinet through opening I54 in the rear wall of liner 62. The next step is to remove the flue 80 and the motor-compressorcondenser unit'may be removed from the cabinet as the rear portion of the machine compartment is open I I Although only a preferred form of the invention has been illustrated, and that form described in detail, it will be apparent to those skilled in the art that various modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.

I claim:

1. Refrigerating apparatus comprising a cabinet having an inner liner, a casing positioned within said liner, a refrigerant evaporating element positioned within said casing but spaced therefrom to maintain non-frosting temperatures on the exterior surfaces of said casing, a door for giving access to theinterior of said casing, sealing means cooperating with said door and said casing to prevent the flow of air into the space enclosed by said casing and means cooperating with said door to provide a dead air space to limit the flow of heat through the door into said space.

2. Refrigerating apparatus comprising a cabinet having a food storage compartment with a vertical air passageway formed therein, a refrigerant evaporating element arranged in said passageway for cooling said cabinet, and a V-shaped trough positioned entirely below said elementin said passageway for collecting the drip water from said element and being provided with louvers in each side thereof for the circulation of air therethrough and being arranged to collect moisture and corrugations formed therein whereby the defrost water from said element may drip on said receptacle and then flow between the bottom thereof and below the top of saidcorrugations 7 into said opening and into said pan.

4. Refrigerating apparatus comprising a cabinet having a food compartment, a partition member in said compartment arranged to completely isolate a freezing zone from air circulatfing relation with said food compartment, said cabinet having an opening in the rear wall thereof leading to said compartment and into the space enclosed by said partition member, and heat absorbing means readily insertible and removable through said opening part into said space and part into said compartment on the outside of said partition member.

5. Refrigerating apparatus comprising a cab-5 r inet having a food compartment, a partition member in said compartment, said cabinet having anopening in the rear wall thereof leading to said compartment and into the space enclosed by said partition member, and heat absorbing means readily insertible and removable through said opening part into said space and part into said compartment, a. drip receiver below said partition, and a trough below the heat absorbins means in said compartment for directing the drip water therefrom to said receiver.

6. Refrigerating apparatus comprising a cabinet having a food compartment, a partition member in said compartment, said cabinet having an opening in the rear wall thereof leading to said compartment and into the space enclosed by said partition member, and heat absorbing means readily insertible and removable through said opening part into said space and part into said compartment, a drip receiver below said partition, and a trough below the heat absorbing means in said compartment for directing the drip water therefrom to said receiver and a removable baille positioned adjacent the heat absorbing means in said compartment.

LAWRENCE A. PHILIPP.

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