US1763659A - Refrigerating apparatus - Google Patents

Description

June l?, 3930. 5, KEILHOLTZ El' AL. 1,763,659 l REFRIGERATING APPARATUS Original Filed Oct. 25, 1923 2 Sheets-Sheet l .M X a y l @L 89 Y 93 i Z- vg ya W f x i i f8 I i /A 3/ ,2b z. Z i m June 17, 1930. s. KEILHQLTZ TAL REFRIGERATING APPARATUS Original Filed Oct. 25, 1923 2 Sheets-Sheet 2 Patented .lune 11, 1930 i vsiax-'rss'.

PATENT OFFICE LESTER S. KEILHOLTZ AND ERNEST DICKEY, 021? DAYTON, 01110, ASSIGNORS, BY MESNE ASSIGNMENTSpTO FRIGIDAIRE CCRPORATION, A CORPORATION. OF DELAWARE REFRIGERAATING- APPARATUS Application filed October 23, 1923, Serial No. 670,352. Renewed lMarch 24, 1928.

This invention relates to improvements in refrigerator cabinet construction, and provides various new and useful features relatingto the construction of an easily cleaned l! air tight inner lining therefor.

One object of the invention is to so locatev the drain pipe that it does not pass through any food compartment and yet extends vertically downward from the compartment to `m be drained thereby.

Another object is to provide -an improved construction of-securing the metal lining to the door post whereby' the" side'surface of the food compartment will lie substantially flush u with the door way, thereby permitting the to the accompanying drawings, wherein apreferred form of em iodiment of the present invention is clearly shown.

In the drawings:

Fig. 1 is a vertical section through a refrigerator, taken online 1-1 on'Fig. 2, and shows certain features of this invention.

Fig. 2 is a horizontal section taken on line 2 2 of Fig. 1, and illustrates the location of the drain pipe and the straight side lining flush with the ,door way.

Fig. 3 is a vertical section taken on line 3--3 of Fig. 2.

Figs. 4 and 5 are enlarged detail views showing modified forms ofthe flue opening in the l'vertical partition. f

Fig. 6 is a partial front elevation of the rerigerator, showing the arrangement of the doors and means for locking the two food compartment doors.

Fig. 7 is an enlarged View ofthe shelf support, partly in section to more clearly show the construction.

Fig. 8 is a view on a reduced scale showing the construction of the wood door panel before the veneering is applied.

Fig. 9 shows a section through the Ywood dilior panel after the veneerng has been apied.

p In the drawings, similar reference characters refer to similar parts throughout the several views.

Numeral U10 designates the outer wooden casing of the refrigerator cabinet which may be of any desired construction. Ordinarily this casing is built up around four corner posts 11 and thick heat insulating walls 12 of any suitable construction are secured in place to these posts 11, leaving an air space 13 be- 'loo tween the walls 12 and the casing 10. In the refrigerator illustrated in the drawings, the

interior space or compartment of the cabinet is divided up into a heat absorbing or cooling chamber 15 at the upper left hand corner and an L-shaped food chamber 16 extending be- .low and along one side of chamber 15. The

horizontal partition 17 and vertical partition 18 separating chambers 15 and 16 are also heat insulating walls in order that a lower temperature may bemaintainedin chamber l5 than in chamber 16. The flue openings 20 and 21 in the horizontal and vertical partitions respectively provide for the circulation of the cold air around through chambers 15` and 16 in a manner well known in the art. Both ofthe chambers 15 and 16 have the interior surface of their walls lined throughout with a metal lining structure including a metal lining portion 25 and the metal lining portion in order to make these'chambers practically germproof, easily cleaned, and air tight to protect the interior of the refrigerator from any odors or vapors from .the insulating walls of wood work.

At the fine opening 20 in the horizontal partition 17 the lining 25 at both upper and lower surfacesis provided with an integral upwardly extending flange, the upper Bange 26 extending around the edge of the opening in the wall and the lower Harige 27 extending upwardly within said openlng as clearly ing material, such as hydrolene, applied between the two linings 25.

At the flue opening 21 in the vertical partition 18 the metal lining 25 on both sides of the Wall is cut away substantially flush with the opening. The coupling ring 35 fits snugly within the opening 21 and is provided with integral flanges which are turned outwardly around the bordering edges of the linings 25,

as clearly shown in Fig. 1.

In the modified construction shown in Fig. 4 the metal lining 25 is provided with an integral outwardly turned flange 37 around each side of the flue opening and the flanges of coupling ring are bent around these flanges 37 as clearly illustrated.

In the modified construction shown in Fig, 5 the metal linings 25 are cut away substantially flush with the opening and the coupling ring consists of two telescoping parts 40 and 41 which lit'snugly within the openings in the lining 25 and telescope snugly upon one 'another until the outwardly turned flanges 42 abut the linings 25.

The front side of chamber 15 is closed by the heat insulating door 45 and the front side of chamber 16 by the lower door 46 and the large door 47. The wooden door jamb 48 lies between the large door 47 and the two small doors 45 and 46. The narrow section of insulating wall applied to the inner side of the door jamb 48 between doors 46 and 47 is made in the form of a U-shaped post 50 of sheet metal forming a portion of the metal lining structure of the compartment of the refrigerator, which post also serves to brace and support one corner of the partition walls 17 and 18 (see Fig. 3). The inturned flanges 51 of the post 50 are clamped against the door Jamb 48 by means of small metal clamps 52 near ythe top and bottom of the post 50. Preferabl cork sealing gaskets are placed between the anges 51 and door jamb 48 and heat insulating pads of cork between the clamps 52 and the flanges 51. After the post 50 is thus secured in place the joints at the flanges may be thoroughly sealed up from inside the post by some suitable material, such as 'hydro1ene, which is illustrated in Figs. 2 and a heavy shading. An important feature -of this invention is the location of the drain pipe 55 interiorly of the post 50, as most clearly shown in Fig. 3, whereby said drain pipe leads vertically. downward from the-floor of the chamber l5 and yet' does not pass through any part of the food chamber 16.

Obviously this construction permits acleaner and more air-tight food chamber. The drain pipe 55 need be sealed only where it connects with the floor lining of the chamber 15. Preferably the post 50 after being secured in place as above described, is filled with some suitable heat insulating material, such as ground cork, and thus aids in insulating the chamber 16 from the outside temperature.

Fig. 2 illustrates another feature of this invention whereby a straight side lining substantially flush with the door way is obtained. The corners lof the cabinet along which thc doors are hinged are reinforced by thedoor posts which lie substantially flush with the side insulating walls 12.v The inner linings 25 of the side walls are provided with outwardly turned integral flanges 61 which abut the door posts 60 and are clamped thereto by small metal clamps 62, which are similar to the clamps 52 above described. Preferably cork gaskets 63 are placed between flanges 61 and door posts 60 and also small cork pads between the clamps 62 and the flanges 6l. The joints between the lining 25 and posts 60 are also preferably sealed by suitable sealing material applied from the outside of lining 25. By this construction an absolutely air-tight seal is obtained between lining 25 and door post 60, and with the large advantage of having the lining 25 straight and flush with the door way. The post 50 forms part of the lining structure of the food colnpartment. This portion of the lining is recessed to receive a conduit such as a drain conduit. Thus a lining is provided for a food compartment having a recess to receive a conduit or drain pipe.

The supports for the removable shelves will now be described. These supports 7() arc Jrovided with a screw threaded end portion 1 of reduced diameter which extends through a small hole in the lining 25. The nut 72 and washer 73 are applied from the outside and by this means the shoulder 74 is drawn tightly up against the lining 25 thus giving an air-tight connection. The insulating material of the side. walls is applied after the supports 70 are secured in place, the projecting nut 72 and threaded portion 71 being imbedded in the insulating material, as clearlyr shown in Fig. 7.

All the features of this invention described above relate to an easily cleaned air-tight cabinet. Obviously it is highly advantageous to have the inner compartments of a refrigcrator substantially hermetically sealed from the insulating material in the walls thereof. since the opening and closing of the doors will cause the circulation of air through very small cracks or apertures in the metal lining and thus bring the otl'ensivc odors of the insulating material into the food compartments. Any small crcvices 1n the linmg also are hard to keep clean and so serve as breeding places for germs. This invention is intended to overcome these defects and disadvantages ordinarily present in refrigerator cabinets. inner metal lining be of non-corrosive metal or porcelain covered. A mechanical refrigerator has been illustrated in the drawings, but obviously the principles of this invention can be equally as Well applied to an ice refrigerator. In the refrigerator illustrated, the cooling is accomplished by a header 89 which is placed in a tank'90 containing brine solution. The brine tank is suspended by straps 91 from bolts 92 placed in the top of the cabinet. Refrigerant medium is supplied to the header 89 by any suitable compressor (not shown) through conduit 93, and is withdrawn therefrom by the same compressor' through conduit 94. This structure is all conventional and is not involved in any of the inventive features herein described.

The construction of the doors 45,46 and 47 will now be described. The wooden door panel comprises a plurality of vertically extending members 7 5 which have tongue and groove connection, as clearly 'shown in Figs. 8 and 9, and two transverse members 76 eX- tending across the ends of members and having mitered corners with the two outside members 75. The construction thus formed is then overlaid on both sides with veneering 77, thus obtaining a very substantial, warp proof, and neat appearing door panel. A rabbet 78 is cut out around the inner edge of the panel to provide a sealing shoulder for the door. A cork sealing gasket 80 is attached to the sealing face of the rabbet 78 extending all around the door to give a substantially air-tight seal When the door is closed.

In addition to the usual door latches the two food compartment doors 46 and 47 are provided with a locking means wherebyV both doors may be locked by a single locking means. In the form shown, a hasp 86 long enough to project over both doors 46 and 47 is inserted over thestaple 87 and the padlock 88 locks the hasp in place. When it i-snot desired to lock the doors the hasp and padlock may be entirely removed and hence will not interfere in any way with the ordinary operation of the doors. I n

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

What is claimed is as follows:

In combination, aKV refrigerator cabinet havingacooling compartment and a food Of course it is intended that the.

passing lengthwise through said heat-insulating means.

2. In combination, a refrigerator cabinet having a cooling compartment and a food compartment, a door post in said cabinet, said door post being provided with a U-shaped member attached to said door post so as to leave a space between the post and the U- shaped member, a drain pipe for said cooling compartment passing through said space, and heat insulating material surrounding said pipe and filling said space.

3. In a. refrigerator, a heat insulating wall having a metal lining adjacent its inner surface, a shelf support secured to said lining, said support having an integral portion eX- tending through an opening in said lining, and fastening means secured to said extending portion, said extending portion and fastening means being imbedded in said insulating wall.

4. A refrigerator cabinet including a metal lining structure forming a compartment, insulation for said cabinet, a recess in said lining structure outside of said compartment, and a conduit along said recessextending into said compartment.

5. A refrigerator cabinet including a metal lining structure forming a compartment, insulation for said cabinet, a recess in said lining structure outside of said compartment extending inwardly into said compartment, and

a conduit along said recess extending into said compartment.

6. A refrigerator cabinet comprising a metal lining structure 'forming a compartment, insulation for said cabinet, a cooling chamber in said compartment, a recess in said ico lining structure, and a drain pipe in said rel cess for said cooling chamber.

7. 'A refrigerator cabinet comprising a metal lining structure forming a .compartment, insulation for said cabinet, a cooling chamber in said compartment, a recess in said lining structure outside said compartment, and a drain pipe in said recess for said cooling chamber. v

partment lined with a metal lining structure, part of said metal lining structure having a recess on its outer side, insulation on the outer side of said metal lining structure, and a pipe leading into said compartment and extending along the recess of said metal lining structure. V

In testimony 4whereof We hereto aiiix our signatures LESTER S. KEILHOLTZ. ERNEST y DICKEY.

compartment, a plurality of doors, one for each of said compartments, a post interposed between said'doors, said post being provided with heat-insulating means, and a drain pipe for said cooling compartment, said drain pipe 8`. A refrigerator cabinet having a com-

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