US1892713A

US1892713A - Refrigerating apparatus

Info

Publication number: US1892713A
Application number: US164712A
Authority: US
Inventors: Harold B Wallis
Original assignee: Frigidaire Corp
Current assignee: Frigidaire Corp
Priority date: 1927-01-31
Filing date: 1927-01-31
Publication date: 1933-01-03
Anticipated expiration: 1950-01-03

Description

Jan. 3, 1933. H, B, wALUs 1,892,713

'REFRIGERA'I'ING APPARATUS Filed Jan. 51. 1927 l 2 Sheets-Sheet 1 Jana, 1933. H, B, WALLIS u 1,892,713

REFRIGERATING APPARATUS provide an improved cooling unit which will.

Patented Jan. 3, 1933 UNITED srrrs PisxrlzN'rI OFFICE HAROLD B. WALLIS, 0F DAYTON, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO FRIGIDAIRE CORPORATION, A CORPORATIONOF DELAWARE REFRIGERATING APPARATUS Application led January 31, 1927. Serial No. 164,712.

This invention relates to refrigerating apfrigerating cabinets.

One of the ob]ects of the invention is to be economical to manufacture and assemble.

Another object is to provide an-improved cooling unit having a large ice freezingvcapaeity.

Still another object is to provideA a simple and economical arrangement of refrigerating ducts which provide a freezing space, with or without a cooling space surrounding the freezing space, and means for withdrawing heat from the interior of the freezing space.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a pre-y ferred embodiment of one form of the present invention is clearly shown.

In the drawings:

Fig. 1 is a front view of a cabinet, having a door open, showing a cooling unit inside constructed in accordance with my invention;

Fig. 2 is a vertical section through a portion of the cabinet, showing the cooling unit 0 on an enlarged scale;

Fig. 3 is a front elevation of a cooling unit; and I Fig. 4 is a side View of the same.

Referring particularly to Figs. 1 and 2, the

" interior of the cabinet 10 is divided into a refrigerating compartment 11 and a food storage compartment 12 by an L-shaped partition 13, having openings 15 and 16 to permit circulation of air. The refrigerating compartment contains an evaporator or cooling unit, generally denoted by 18, to which refrigerant is supplied by a pipe 19 and from which it is withdrawn through a pipe 2O by means of any suitable refrigerating -apparatus (not shown) Such apparatus may be placed at any convenient location, such as in a machine compartmentyprovided A'with doors 21 beneath the storage compartment 12. Air, cooled by the evaporator 18, descends through opening 16 into the food compartment, .displacing the warm air therein, which. latter Hows into the refrigerating compartment through the opening 15. This sets up a circulation of air and maintains the storage compartment cold in the well known manner.

In accordance with my invention, I construct the cooling unit as follows:

An elongated header or boiler 22 for containing refrigerant is provided with ducts 23 depending andextending laterally from it to enclose an elongated horizontally disposed freezing space 24. Other ducts 25 depend from the header and extend laterally beyond the ducts 23 so as to be exposed to and cool effectively the air circulating` through the refrigerating compartment.

Considerable manufacturing advantage results from joining each of the ducts 23vto a duct 25 by connecting ducts 26, that is making a single loop of pipe serve as one duct 23 and one duct 25. Preferably all the loops are of an identical shape, which is asymmetrical to the central axial plane of the header. In assembling, alternate loops are reversed, so as to

alternate ducts

23 and 25 along the header. Bracing means for the loops are provided at the lower ends thereof and are in the form of strips 36 connected with the ducts 26. 80

Since the freezing space is of considerable volume, I provide means for. dividing the freezing -space into a plurality of freezing zones or compartments or for withdrawing heat from the interior of the space, in the 5 formof one or more refrigerant ducts 30 extending from the boiler into the center of the space with the horizontal portions extending longitudinally 'of 'and within the space. 'One of the ducts 3 0 is located out- 90 side of the other of said ducts so that the inner duct is nested within the outer duct. As shown in Figs. 3 and 4, such ducts are preferably loops, each connected to the header near each end of the header, and lying in its central axial plane.

as shown in Fig. 3, for receiving ice trays 35, 00

shown in Fig. 2. The longitudinally disposed ducts divide the freezing space 24 into a plurality of freezing compartments bounded on one side by the ducts 23 and on the other side by the duets 30. The shelves are thermally connected both with the

ducts

23 and 30. This arrangement may be effected either by soldering rectangular metal sleeves 32 to the

ducts

23 and 30, or by laying drawing heat from the interior of the freezleo ing zone by the use of a relatively small'number of conduits. This effects a considerable saving in manufacture, as it requires neither a large number of loops of pipe, nor a large number of connections to the header, the latter especially being expensive manufacturing operations. x I am thus enabled to produce economically a cooling unit, having a compact freezing space or zone or a plurality of freezing zones or compartments of large ice freezing capacity, surrounded by, a zone which effectively cools the circulating air to refrigerate a storage compartment.

While the form of embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

l. Refrigerating apparatus comprising, a header for containing refrigerant, a plurality of ducts extending from the header to form avfreezing zone, and one or more ducts extending from the header and passing through the freezing zone in a. direction transverse to the direction of the first mentioned ducts.

2. Refrigerating apparatus comprising. an elongated header for containing refrigerant, a plurality of ducts extending from the header transversely to its axis and forming a horizontal and rearwardly extending freezing zone, and one or more conduits connected to the header and extending rearwardly through the freezing zone.

3. Refrigerating apparatus comprising, an elongated header for containing refrigerant, one or more ducts extending from the header in an axial plane, a plurality of ducts extending from the header transverse to its axis and forming a freezing zone around the first mentioned ducts, and two or more supports in the freezing zone, the outer portion of each of the supports being thermally connected to the transverse duets and the inner portions of each of the supports being thermally connected to the axial ducts.

4. Refrigerating apparatus comprising, an elongated header for containing refrigerant, one or more loops extending from the header in an axial plane, and a plurality of loops extending from the header transverse to its axis and surrounding the first mentioned loops to form a freezing zone.

5. Refrigerating apparatus comprising, an elongated header for containing refrigerant, one or more loops extending from'the header in an axial plane, a plurality of loops extending from the header transverse to its axis and surrounding the first mentioned loops to form a freezing zone, and two or more supports placed side by side in the freezing zone, the outer portions of each of the supports being thermally connected to the outer loops and the inner portions being thermally connected to the inner loops.

6. Refrigerating apparatus comprising, an elongated header for containing refrigerant, a relatively largenumber of ducts extending from the header and formin an inner freezing zone and an outer cooling space, and a relatively small number of ducts projecting into the freezing zone and having a relatively large area exposed to the freezing space` said latter ducts being arranged to divide said freezing zone into a plurality of compartments each adapted to receive an ice tray.

7. Refrigerating apparatus comprising, an elongated header for containing liquid refrigerant, one or more loops extending from the header in an axial plane, other duct means connected with the header, and means supported between said loop and duct means and in intimate metallic contact with the duct means and with a plurality of branches of the loop for supporting an ice tray.

8. Refrigerating apparatus comprising, an

elongated header for containing liquid re-v frigerant, a plurality of duet loops connected with the header in parallel circuit relation, certain of said loops extending from the header in an axial plane, and other of said loops extending from the header transverse to its axis, and means supported between said loops and in intimate metallic contact therewith for supporting an ice tray.

.9. A cooling unit for mechanical refrigerators comprising a rearwardly elongated header, heat exchange means connected with the header, one or more loops connected with the header, said loop being disposed below the header and extending rearwardly and cooperating with said heat exchange means to provide a horizontal and rearwardly extending freezing zone for an elongated ice tray.

10. A cooling unit for mechanical refrigerators comprising an elongated rearwardly extending header, heat exchange means connected with the header, one or more loops connected withthe headerand disposed longitudinally thereof, said loop cooperating with said heat exchange means to provide a horizontal and rearwardly extending freezing zone,l for an elongated icetray.

of said looped conduit means forming therebetween a rearwardly extending- `freeaing zone, 1ce tray supports disposed within said freezing zone and conduit means extending longitudinally` of and within the freezingl zone and disposed between andin thermal Contact with said supports. 1 Y

13. Refrigerating apparatus comprising looped conduit means, the opposed branches of said looped conduit means forming therebetween a rearwardly extending freezing zone, ice tray supports disposed within said freezing zone, and in different vertical planes, and conduit means extending longitudinally of the freezing Zone and between and in theri mal contact with the supports.

14. Refrigerating apparatus comprising a rearwardly elongated header for liquid refrigerant, looped conduit means connected with the header, the opposed branches ofsaid looped conduit means forming therebetween a rearwardly extending freezing zone and conduit means extending longitudinally of and within the freezing zone for dividing the same into a plurality of rearward- 1y extending freezing compartments for elongated ice trays.

15. Refrigerating apparatus comprising a rearwardly elongated header for -liquid refrigerant, conduit means connected with the header and providing a freezing zone, and conduit means extending longitudinally of and within said freezing zone for dividing the same into a plurality of rearwardly extending compartments eachad apted to receive an elongated ice tray.

16. Refrigerating apparatus comprising a. rearwardly elongated header for liquid refrigerant, conduits means connected with the header and providing a freezing zone, ice tray supports for rearwardly extending ice trays disposed within said freezing zone, and conduit means extending 'longitudinally of and within the freezing zone and disposed between and in thermal contact with said supports.

17. Refrigerating apparatus comprising a rearwardly elongated header for liqnid refrigerant, conduit means connected wlth the header and providing a freezing zone, ice

tray supports for rearwardly extending ice trays disposed within said freezing zone, and in different vertical planes, and conduit means extending longitudinally of the freezing zone and between and in thermal contact with the supports.

18. A cooling' unit for refrigerators comprising-a header, a conduit connected with -said header and extending longitudinally with respect to the axis of the header, a sec-y -ond conduit nested within said first named conduit and cooperating therewith to provide a row of conduits extending longitudinally with `respect to the axis of the header,

laterally from said row of conduits to pro,-

vide at least one other wall of said freezing zone or compartment.

. 19. A cooling unit for refrigerators comprising a header, a plurality of conduit loops disposed one outside of the other and having their ends connected with said header, said conduit loops being arranged to provide a row of conduits extending longitudinally with respect to theaxis of the header to pro' vide at least a portion of a wall of a freezing zone or compartment adapted to receive a receptacle to be cooled, and refrigerantjcon veying means communicating with said header and spaced laterally from said row of conduitsto provide at least one other wall ofsaid freezing zone or compartment.

20. A cooling unit for refrigerators comy operating with and nested within' said first namedv conduit to provide a row of conduits extending longitudinally with respect to the axis of the header, said row of conduits providing at least a portion of a'wall of a freezing zone oi' compartment disposed below said header adapted to receive a receptacle to be cooled, and refrigerant conveying means communicating with said header and spaced laterally from said row of conduits to provide at least one other wall of said freezing zone or compartment.

2 1. A cooling unit for refrigerators comprising a header, a plurality of conduit loops disposed one outside of the other and depending from said header, said conduit' loops having their ends connected with the header and being arranged to provide a row of conduits extending longitudinally with respect to the axis of the header to provide at least a portion of a wall of a freezing zone or compartment disposed below said header adaptiso rigerant conveying means communicating with said header and spaced laterally rom said row ofconduits to provide at least one other Wall of said freezing zone or compart- 5' ment.

In testimony wheeof I hereto a'lx my signature.