US2339566A - Refrigerating apparatus - Google Patents

Description

Jan. 18, 1944.

M. JI. GOULOOZE REFRIGERATING' APPARATUS Filed nay r. 1941 INVENTOR. @MPT/r( al Qaaaaazz:

ATTORNEY.

Patented Jan. 18, 1944 REFRIGERATING APPARATUS Martin J. Goulooze, Grand Rapids, Mich., assignor to Nash-Kelvinator Corporation, Mich., a corporation of Maryland Detroit,

Application May 7, 1941, Serial No. 392,209

3 Claims.

The present invention relates to refrigerating apparatus and more particularly to refrigerator cabinets. s

It is an object of the present invention to provide an improved door for a refrigerator cabinet.

It is another object of the present invention to provide an improved door for a refrigerator cabinet having inner and outer panel in spaced apart relation whereby the outer panel is rigidly reinforced for supporting the weight of the door without buckling or twisting, with the inner panel attached in floating relation to permit free expansion and contraction.

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 specic embodiments when read in conjunction with the accompanying drawing, in which:

Fig. 1 is a front View of a refrigerator cabinet embodying the present invention;

Fig. 2 is a rear View of the refrigerator cabinet door with parts brokenaway;

Fig. 3 is a fragmentary venlarged cross sectional view taken along line 3-3 of Fig. 1;l

Fig. 4 is a fragmentary view with parts broken away and. parts shown in section taken along line 4-4 of Fig. 3; and

Fig; 5is a fragmentary enlarged cross sectional view taken along line 5-5- of Fig. 2.

Shown in the drawing is a refrigerator cabinet .I0 having a food storage compartment I2 cooled by any suitable refrigerant evaporator of the type now in use (not shown) herein. 'I'he cabibent -at right angles to form an inwardly extending section 30.

Extending longitudinally about the door and flush against the sides 29 at a parallel distance .below the section 30 is a frame member 32. The

frame32 comprises a horizontal section 33 extending inwardly at right angles to side 29, and

a leg section 34 lying against and secured by weld, or, the like, to the side 29.. 'I'he end of the leg section is turned atright angles, as at 35.

The horizontal section 33 of the frame extends inwardly a determinable distance beyond the end edges of the section 30. Formed in each of the four corners of section 33 are slots 3l through which pass the ends of the straps 40 which are doubled back and secured by clips 42 to the main portion of the straps. The straps 40 extend diagonally across the door tying opposite diagonal corners of the frame.

Resting on the edge of the frame member 32 is a panel 45 which forms the inner side of the net I0 comprises an outer shell I4 and an inner shell or liner I6 in spaced apart relation for placing suitable heat insulation material I1 therebetween and forming insulated top, bottom, rear and side wallsenclosing the food storage compartment. The inner liner I6 and outer shell I4 are interconnectively joined together by a .breaker strip I9 adjacent the door opening 20 of the compartment I2. The breaker 'strip together with the inwardly turned portion 22 of the outer shell I4 forms the front wall of 22 of the outer shell to prevent air entering the iood storage compartment.

The door z5 is constructed with an outersheet metal panel 21 formed with upwardly extending sides 2S. The marginal edge of the sides are doorv and is suillciently spaced from the outer sheet metal panel 2l to provide therebetween for the insertion of heat insulation material 41.

The panel 45 is preferably formed of Bakeli Micarta, or other plastic or compositional material having a low heat conductivity. vIt has been found that such compositionally made panel has the tendency to absorb moisture that has condensed on its surface due to the cooled surface with the` result that the absorption causes'an expansion which if not compensated for causes a buckling or warping of thelpanel. Further, the expansion is not uniform throughout, but that it may .be confined to certain local areas where moisture had condensed and been absorbed, while other areas remain unaiected.

Likewise, the expansion may be in accordance` to the amount of moisture absorbed in diiferent areas. To permit lateral expansion, the` panel 45 is frictionally held' .by plate 50 against the frame member 32. The plate is secured to the frame member 32 by screws 52 which thread into the upwardly pressed cup shaped section 53. The section 53 serves also as a spacer in preventing the plate 50 from binding the edge of the panel and to allow expansional or contractual movement. The panel 45 is also secured at approximately near its center vby screw 55 to the straps 40 at their point of intersection. The shank'of the screw 55 is of considerably less diameter than the diameter of the opening 56 in the panel 45 ened base 60 resting on the frame member.. The base 60 narrows as it extends upwardly to provide a constricted neck portion which is viselike held between the edge of section 30 and the edge of the plate 50 against withdrawal. The plate 50 secures the gasket so as to prevent leakage of air into the interior of the door to thus prevent moistureformation on the inner side of the panel limit myself to the precise details as shown but wish to avail myself of Such variation and modifications as may come within the scope of the appended claims.

I claim:

1. A door for a cabinet comprising sheet material to provide side walls with its marginal edge u turned to extend inwardly, a reinforcing frame member extending longitudinally in engagement and secured to said side walls, straps joining diagonally opposite corners of said frame member, an insulating panel forming the inner'side of said door, means for frlctionally holding the edges of said panel against said frame member to permit said edges to move relative to said frame member upon the expansion and contracf therewith a laterally opening pocket, and a nonmetallic panel member forming the inner side of said door secured by its edges confined within said pocket.

3. A door construction comprising sheet material formed to provide side and front walls with its marginal edge anged inwardly, a frame carried by said sheet metal at the rear of the door, an insulating panel extending across and forming the rear wall of the door, and means forming a pocket with said frame for frictionally securing said panel to said frame, and a sealing gasket secured between said means and said inwardly flanged edge.

MARTIN J. GOULOOZE.

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