US2315221A - Refrigerating apparatus - Google Patents

Description

INVENTOR L. A. PHILIPP REFRIGERATING APPARATUS Filed April 25. 1939 Lawn c1: 19. P/I/LIPP ATTORNEY.

llllllllllll filllllllllllllllllllllv March '30, 1943.

@atented Mandd. 1%3

a series ammcanamc srransros science A. Pbllipp, Detroit, Mich... assigns: to Nash -Kclvinstor Corporation, Detroit,- Mich, a

corporation cl Maryland 2 Claims.

The present invention pertains to a refrigerating apparatus.

An object of the present invention is to protracted on, its support without necessitating attention to the drainage connection.

The invention itself, however, both as to its organization, and its method of operation together with additional objects and advantages thereof, will best be understood from the following description of specific embodiments when read in conjunction with the accompanying drawing, in which:

Fig. l is a central vertical longitudinal view in cross section of a refrigerator cabinet showing the invention applied;

Fig. 2 is a view taken along line 2-2 of Fig. 1:

Fig. 3 is a fragmentary vertical longitudinal view in cross section of a refrigerator illustrating a modified form of the invention for collecting and removing the melted ice defrosted from an evaporator;

Fig. 4 is a fragmentary view in cross section of a refrigerator illustrating a further modified form of the invention for collecting and removing the melted ice defrosted from an evaporator;

Fig. 5 is a fragmentary view in cross section of a refrigerator illustrating a modified form of the invention for vaporizing the water collected through a small diameter conduit 85 to the evaporator 2d. The conduit 3c is formed intermediate the compressor unit 28 and condenser 32 into a spiral coil 36 in which is fitted a cup-shaped container or bucket 38;. The coil 36 may be soldered, welded, or the like to the container 38 to form a thermal bond therebetween.

Preferably the system is operated so that little or no frost collects on the surface of the amp-- orator 25. The little frost that does collect is during the cycling of the compressor when there is a rapid withdrawal of gaseous refrigerant from the evaporator, but this frost quickly melts during the ofi-cycle of the compressor. The system may however be operated to collect and 'retain frost on the'surfaces of the evaporator as is well understood in the art. In this case it is neces sary to periodically defrost the evaporator. In

order to catch this drip there is positioned he neath the evaporator a shallow pan to. The pan so is carried on and serves also as a cover for the deep pan or food storage container 52 that is slidably supported on rails dd secured on shelf es. Theshelf M is supported on brackets dd provided on the side walls of the food storage compartment id.

Secured in the rea wall of the pan d@ is a tube 5t so arranged as to permit drainage of the pan therethrough. The tube is bent to he directed downwardly to terminate above and to be in alignment with an open funnel shaped mouth 52 or a drain conduit dll'whose opposite end terin the defrosting pain during the defrosting 'of an evaporator.

Referring to Fig. l in the drawing, a cabinet to is constructed of insulated side, top and bottom walls It to provide for a food storage compartment it. The front wall id is provided with an opening i5 for access to the compartment 115 closed by a swingably mounted closure member 68. A second compartment 20 is provided in the cabinet ill whereinis placed the compressorcondenser unit 22 of a refrigerating unit.

Secured to and suspended from the top wall within the food storage compartment i6 is an evaporator 2d. Leading from the evaporator 24 fo drawing heat laden refrigerant therefrom is a conduit 25 connected at its opposite end to the motor compressor unit 28. The compressor 28' 1 serves to liquefy therefrigerant to be conducted inmates within the open container 38. The arrangement of the tube W with drain conduit 54 allows drainage from pan dd to container 38,

also a ready retraction or withdrawal of the pan so from the compartment ,ld may he had. The replacement of the pan dd into position to catch the drip from the evaporator will align the tube til over the mouth 52 of conduit Ed.

The condensate in the container or bucket 38 will be in heat exchange relation with the compressed refrigerant flowing through coil 38 toward the condenser 32. This relationship will tend to lower the temperature of the refrigerant in coil 35 while the vaporization of the condensate will be considerably increased so that the condensate will rapidly pass into the atmosphere in form of vapol. It will be noted that by this arrangement there is not only eliminated the necessity of manually removing the condensate from the pan, but. also increases the emciency of the condenser as it permits the refrigerant to enter the condenser at a lower tensperature than normally wouldbe the case.

In the modified form shown in Fig. 3 there is provided a deep pan II for thestorage of foods such as meats and for catching the condensate that may drip from the evaporator 24 when it is being defrosted. A drain tube 12 is secured in in the pan ill until a predetermined level isreached when it flows through the syphon tube ll into conduit II.

In Fig. 5 there is shown a modified form for the vaporization of the condensate by arranging an open trough Oll circumferentially on the shell of the motor-compressor unit 82. n A drain conduit 94 terminates within the trough 90 emptying therein the condensate defrosted and collected from an evaporator. The heat created by the operation of the compressor and transmitted to. to be radiated by the shell will be absorbed by the condensate or water, in the trough 90, increasing'its vaporization so that there is provided a means for passing the water in form of vapor into the atmosphere and maintaining a cooler to avail myself of such variations and modifications as may come within the scope of the appended claims.

Iclaim:

1. Refrigerating apparatus comprising a. cabinet having a compartment, a refrigerant evaporating elementfor cooling said compartment, a

compressor, a condenser connected to said compressor, a storage receptacle for foods to be refrigerated, a tray cover for the receptacle for collecting moisture from the evaporating element, and means for conducting said moisture from said tray cover to a point between the compressor and the condenser in thermal contact with the refrigerant passing from the compressor to the condenser.

2. Refrigerating apparatus comprising a cabinet having a compartment, a refrigerant evaporating element for cooling said compartment, a

condensing element associated with said evaporating element, a drip tray cover device located to. said cover device for receiving and conducting moisture from said device and the other end thereof positioned outside of said receptacle and means for conducting moisture from said conduit device to the vicinity of said condensing element.

LAWRENCE A. PHILIPP.

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