US2468932A - Refrigerating cabinet having an air-pump circuit - Google Patents

Description

May 3, 1949. F. N. JAMES 2,468,932

REFRIQERATING CABINET HAVING AN AIR PUMP CIRCUIT Filed Nov. 29, 1946 2 Sheets-Sheet 1 FRAZ IER N. JAMES INVENTOR.

ATTORNEY I May 3, 1949. I N. JAMES I 2,468,932

REFRIGERATING CABINET HAVING AN AIR PUMP CIRCUIT Filed Nov. 29, 1946 2 Sheets-Sheet 2 INVENTOR.

ATTORNEY FRAYZIER- N. JAMES Patented M a, 1949 2,468,932 BEFBIGERATING CABINET HAVING AN AIR-PUMP CIBCUI Frazier N. James, Dallas, Tcx., assignor, by mesne assignments, of thirty-three and one-third per cent to The Master Corporation, a corporation of Arkansas, thirty-three and one-third per cent to Frazier N. James, and thirty-three and mne-third per cent to Richard A. Gump Application November 29, 1946, Serial No. 712,867

1 Claim. 1

This invention relates to refrigeration equip- 'ment and more particularly to dry cooling cabinets for bottled beverages and'foodstuffs.

The principal object of the invention is to provide a cooling cabinet consisting of lower. and 7 upper compartments, the latter compartment being insulated against external temperature .influences and whose inner side walls are recessed to define elongated chambers in each of which is installed a refrigerating coil through which. a refrigerating, medium is circulated-by a conventional refrigerating unit installed in the lower compartment.

Continuing with a more detailed description of the drawings. reference numeral ill denotes a cabinet whose side walls are inwardly convergent towards the bottom to allow for "foot room for Another object of the invention is to provide a 7 dry cooling or deep freezing cabinet in which the commodities placed therein for cooling or preservation are kept at low, uniformly distributed Y temperatures by a liner of a material having high heat conducting characteristics and which overlies and conceals the refrigerating coils and affords restricted passageways in communication with the coil recesses, through which air is recirculated by artificial means adjacent one end of the cabinet.

Still another object of the'invention. is to provide a dry cooler or deep freezer designed for economical operation in that repeated opening of the door of the cabinet, such as may occur when bottled beverages are dispensed therefrom, will have less effect to dissipate stored refrigeration than in conventional cabinets for similar purposes. This is due to the fact that the refrigerating coils of the invention are more or less isolated and shielded against the influence of warm air admitted into the cabinet, yet are highly effective to quickly restore original low temperatures in the refrigerating compartment by conduction through the walls of the latter.

With the foregoing and other objects in view the invention has further reference to other features of accomplishment which will become apparent as the description proceeds when taken in connection with the accompanying drawings wherein:

Figure 1 is a top perspective view of a dry cooler or deep freezer constructed according to the present invention. I Figure 2 is a plan view in section, taken on.

'line 2-2 on Figure 3.

Figure 3 is an end elevational view in vertical lower compartment of the cabinet.

one standing close to the cabinet. Casters ll support the cabinet for convenient movement from place to place. The features identified at l2 in Figure 1 are merely decorative.

The cabinet has two compartments, the lower compartment i3 containing the refrigerating unit ll of conventional manufacture, operated by motor l5, and accessible through doors llat the front of the cabinet which are louvered as shown,

for dissipation of heat.

. The upper or refrigerating compartment of the cabinet is completely enclosed by insulating walls l'l, insulated closures or doors l8 and the insulated horizontal partition I! which separates 1 the upper from the lower compartment. The

partition [9 is reinforced in the present case, by timbers 20, extending from end to end of the cabinet.

It will be observed in Figure 3 particularly that the side walls l'l are longitudinally recessed to define cavities 2i to accommodate refrigerating coils 22 whose confronting faces are disposed inwardly of the top of the cavity which is defined by the overreaching edges 23 of the opening in the top of the cabinet. Lying flush with the edges 23 are the side walls 24 of the liner or chamber 25, in which is stored the commodity to be preserved in or dispensed from the cabinet. This chamber is closed except for a preferably circular opening 28 in each end thereof, adjacent one of which openings is a fan 21, operated by a small motor 28 to create a suction through the chamber 25, causing air to circulate in the direction of the arrows, across the coils 22 and through the passages or spaces 25, in communication. with the coil recesses 2i and which'are definedat each end of the cabinet by the relative spacing-of the walls of the latter and those of the chamber 25.

7 It is apparent thatby recessing the coils 22 and closing the recesses by the side walls of. the chamber 25 except at the ends. the coils are shielded against direct contact of warm air entering the chamber 25 when the doors it are opened,

I which they are frequently while dispensing bottled beverage from the cabinet. However, the circulation set up by the fan 21 establishes and maintains uniform distribution of refrigerated air throughout the chamber 25. The stored refrigeration in the coil recesses 2l.quickly re-.

stores the temperature in compartment 25 when temperatures for long periods after the refrigerating unit It has been made inactive to circulate a refrigerant through the coils 22 by way of the tubes 30.

In Figure 3 is shown a temperature indicator 3|, visible through an aperture 32 in one end wall of chamber 25.

Manifestly, the construction as shown and described is capable of some modification and such modification as may be construed to fall within the scope and meaning of the appended claim is also considered to be within the spirit and intent of the invention.

What is claimed is:

In a dry cooling unit, the combination comprising a cabinet having upper and lower compartments and whose side walls are inwardly convergent at the bottom thereof, a refrigerating unit in the lower of said compartments, said upper compartment being insulated against external temperature influences and whose interior side and end walls are longitudinally recessed, a refrigerating coil lying wholly within each of said sidewall recesses and through which a refrigerant is circulated by said refrigerating unit, a removable commodity chamber within said upper compartment whose side and end walls completely cover and separate said recesses from said chamber, the latter having an opening in each end thereof communicating with the end recesses, means for establishing and maintaining suction through said openings to effect circulation of air through said chamber and said coil recesses across said coils and a hinged cover closing the top of said cabinet and chamber.

FRAZIER. N. JAMES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,226,395 Tanner Dec. 24, 1940 2,241,558 Read May 13, 194.1 2,322,882 Raskin June 29, 1943

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