US 2554290 A
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Description (OCR text may contain errors)
May 22, 1951 o. E. BECKER PORTABLE UTILITY REFRIGERATOR UNIT Filed June 14, 1946 2 Sheets-Sheet 1 F 51 7 E E 7 I May 22, 1951 o. E. BECKER 2,554,290
PORTABLE UTILITY REFRIGERATOR UNIT Filed June 14, 1946 I 2 Sheets-Sheet 2 4 Il a- 27/ IN V EN TOR.
Patented May 22, 1951 UNITED STATES PATENT OFFICE PORTABLE UTILITY REFRIGERATOR UNIT Otto Edward Becker, Los Angeles, Calif.
Application June 14, 1946, Serial No. 676,636
1 Claim. 1
This invention relates to portable refrigerator units that may be used to refrigerate a given space such as a common kitchen drawer and when the temperature of the space is sufficiently reduced the unit may be readily and easily moved to another space.
The primary object of my invention is to provide a portable package refrigerator unit that may be readily moved from one space to another, thus permitting the refrigeration of several individual spaces with a single unit.
A further object of my invention is to provide a portable refrigerating unit that may be easily carried in ones car to a mountain cabin, lodge, camp, or be used in a trailer.
A further object of my invention is to provide a portable refrigerator unit that may be used as a utility unit for caterers.
A further object of my invention is to provide a portable refrigerator unit that may be used to cool or refrigerate the drawer or top space in a utility table or the contents of a common cooking vessel.
With these and incidental objects in view the invention consists in certain novel features of construction and combination of parts, a preferred form of which is hereinafter shown with reference to the drawings which accompany and form a part of this specification.
In the drawings:
Fig. 1 is a front view of a common kitchen cabinet.
Fig. 2 is a cross sectional view taken on line 22, Fig. 1, looking in the direction indicated.
Fig. 3 is a top view of a drawer removed from the cabinet showing the refrigerator unit in its place.
Fig. 4 is a cross sectional view taken on line 4-4, Fig. 3, looking in the direction indicated.
Fig. 5 is a fragmentary top view of the drawer with the refrigerator unit removed showing the aperture provided for air circulation.
Fig. 6 is a plan view of the refrigerator unit removed from the drawer and having the shrouds removed to show the relationship of the several units.
Fig. 7 shows how the unit is used in order to refrigerate a common cooking vessel.
Fig. 8 is the refrigerator unit removed from the drawer showing the aperture in the back side of the shroud which registers with the aperture I3 of a portion of the drawer.
Like numerals refer to like parts throughout the several views.
My invention shows the cabinet I, having the drawers 3 and 4, the boards 5 and 6, and the doors 'I and 8. The top 9 is hinged with spring balanced hinges Ill, and provides a second means of access to the drawers 3 and 4. In the drawer 3, I show the portable refrigeration unit II which is separated from the rest of the drawer by the hinged board I2. The refrigerator unit II is placed in one corner of the drawer so that the motor, compressor and condenser are directly over the aperture I3 to permit the circulation of air from a source outside of the drawer area. I provide a thumb screw I4 which is screwed against the board l2 holding the unit I I in its proper place at all times. The refrigerator unit II has the insulated diaphragm I5 which separates the evaporator I6 and the compressor II, the motor I8, and the condenser I9. I provide the shroud 29 for the evaporator I6 and the insulated shroud 2| which has an opening that registers with the aperture I3 of the drawer. The refrigerator unit is placed in the divided portion of the drawer 3 and receives its cooling air through the aperture I3 of the drawer 3. The cooling air is also discharged through the same aperture. This is possible since the size of the compartment below the drawer is always considerably larger than the drawer and is usually exposed to an entire room through vents or the opening and closing of other compartment doors. Circulation of the air is ac-. complished by the fan 21 provided for this purpose. I provide the holes 22 in the hinged division board it so that the air in the drawer may circulate and contact the evaporator IS. The cord 23 may extend through the aperture I3 and then to the nearest outlet. To remove the refrigerator unit II, the thumb screw it is released and by grasping the handle 25 it is free to be lifted out. The cord 23 must, of course, be unplugged. The circulating fan 25 is provided to draw air through the condenser I9 and the conventional control knob 26 is provided for the purpose of regulating the temperature to be maintained.
The unit may be operated in a vertical plane as well as a horizontal one; In Fig. '7 I show a common cooking vessel 21 having a lid 28 with the handles 29. The hole 39 in the lid 28 permits the evaporator I6 and its shroud 20 to pass through it. The insulated diaphragm I5 rests on the top 28. In this manner any articles placed in a common vessel may be refrigerated at will.
It is well known that the average mechanical refrigerator operates but a small portion of the total time, hence with my portable unit it is possible to have several drawers, boxes, table tops or other receptacles operating with but one unit. Thi is accomplished by moving the unit from one place to another thereby getting the highest possible amount of work out of a single unit or investment.
When the unit II is removed from the drawer, the hinged board l2 lies flat against the bottom of the drawer covering the aperture I3 and rendering the drawer one hundred percent useful for ordinary purposes.
I provide the snap latch buttons 3| that must be depressed before the drawers may be pulled out. The light 32 is of the conven'tionaltype and illuminates when the top of the cabinet 9 is raised uncovering the drawers '3"a"nd '4. This permits one to readily read the thermometer 33. It is obvious that a portable closure such as a travelers suit case could be readily used as a refrigerator. The unit may also be used without an enclosure thus providing means of local refrigeration.
While theform of mechanism here shown and described is admirably adapted to fulfill the objects primarily stated, it isto be understood that it is not intended to confine the invention to the .form of embodiment herein shown and described in a vertical position.
OTTO EDWARD BECKER.
REFERENCES CITED 'The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,256,730 Richter et a1 Feb. 19,1918 1,646,919 Lipman Oct. 25, 1927 1,789,913 .Swezey Jan. 20, 1931 1,917,537 Melcher July 11, 1933 2,056,353 Haunz Oct. 6, 1936 2,283,904 Baumgarden May '26, 1942