US2195804A - Refrigerator unit mounting - Google Patents

Description

April 2, 1940. w. B. ANDERSON REFRIGERATOR UNIT MOUNTING a Sheets-Sheet 1 Filed Sept. 2, 1938 INVENTOR wuM MBANuERsuN ATTOR EY April 1940- w. B. ANDERSON 2,195,804

REFRIGERATOR UNIT MOUNTING Filed Sept. 2, 1938 3 Sheets-Sheet 2 Fri.

INVENTO wmuqm B. ANuEasoN April 1940- w. B. ANDERSON 2,195,804

REFRIGERATOR UNIT MOUNTING Filed Sept. 2, 1958 s Sheets-Sheet a 3? L W A 29 as Y; \35

32 Y a m 0 J as WITNESSES: INVENTOR i wxLuAM B. ANDERSON.

5. 14. v VM ATTORN Y ?atented Apr. 2, 1940 UNITED STATES PATENT REFRIGERATOR UNIT MOUNTING of Pennsylvania Application September 2, 1938, Serial No. 228,079

5 Claims.

This invention relates to mechanical refrigerators and more especially to means for supporting and cooling the refrigerant liquefying apparatus of the refrigerator.

5 One object is to support and cool the refrigerant supplying mechanism of a mechanical refri erator in a novel manner.

Another object of the invention is to provide a means for effectively guiding the cooling air over 10 the portions of the apparatus to be cooled.

Another object is to secure the various parts of the refrigerant liquefying apparatus together by a means which also guides the cooling air over the part to be cooled.

15 Another object is to locate the refrigerant apparatus in a noise silencing duct in a manner to effectively circulate the cooling air through this duct.

These and other objects are effected by my in- 20 venticn as will be apparent from the following description and claims taken in accordance with the accompanying drawings, forming a part of this application, in which:

Fig. 1 is an elevational view of the refrigerator of this invention with substantially the entire side wall broken away to show the interior of the refrigerator;

Fig. 2 is a section on the line 11-11 of Fig. 1 looking in the direction of the arrows;

3 Fig. 3 is a section on the line III-III of Fig, 1

looking in the direction of the arrows;

Fig. 4 is a plan view of the base plate of the refrigerant liquefying apparatus;

Fig. 5 is a section on the line V-V of Fig. 4

85 looking in the direction of the arrows; and

Fig. 6 is a section on the line VIVI of Fig. 4

looking in the direction of the arrows.

Referring now more particularly to Fig. 1, the reference numeral l identifies a cabinet having an outer casing H and a horizontal partition |2 therein-which divides the cabinet Ill into a food compartment l3 and a machine compartment 4 The food compartment I3 is lined with insulating material It and is provided with an inner liner II. An evaporator or cooling unit I8 is secured to the upper wall thereof. Access to this compartment may be had through a door l9 which is adapted to swing on hinges 2|.

The lower edges of the refrigerator casing II are rolled inwardly to form'flanges 22 which rest 50 on a base section 23 comprising a rectangular metal frame 24, the upper and lower edges of which are bent inwardly to form flanges 20. An

opening 26 is formed in the rear wall 01 the frame 24. Secured on the inturned flanges 22 oi the outer casing of the refrigerator cabinet by means of the bolts 21, which also pass through the upper flanges 20 of the base section 23, is a metal plate 28, shown in greater detail in Figs. 4, 5, and 6. The plate 28 is of substantially rectangular form and has a portion 29 cut out in one of the shorter edges. The other three edges of plate 28 are turned upwardly to form reenforcing flanges 30. A reenforcing groove 3| is pressed downwardly in the plate near its center and parallel to the shortor edges. A reenforcing panel 32 is also pressed upwardly near the short flanged edge of the plate.

Holes 33 in the plate provide for the passage of bolts 21 therethrough. Plate 28 forms the bottom of cabinet.

A refrigerant liquefying apparatus 34 is mounted on the plate by means of springs 35 and holddown bolts 48. The refrigerant liquefying apparatus 34 comprises a sealed casing 36 in which is housed the refrigerant compressor and the motor for driving the same. The compressor and the motor are of conventional design and are not shown on the drawings. U-shaped fins 31 are welded to the portion of the casing 36 containing the motor and a metal shroud 38 is welded at one of its edges to the extremities of the projecting U-shaped fins 31 on the casing 36. The other end of the shroud 38 diverges and is secured to the edges of a rectangular condenser 33. The condenser 39 is also of conventional design and comprises a radiator which dissipates the heat of the compressed refrigerant vapor.

A fan 4| and a motor 42 for driving the same is secured in the shroud 38 betwen the condenser 39 and the casing 36. The fan 4| draws cooling air through the condenser 39, through the shroud 38, and passes it through the radiating fins 31 on the casing 36. The shroud 38, besides directing the air as described, also unites the casing 36, the fan 4|, the motor 42 and the condenser 39 into a unitary refrigerant liquefying mechanism.

The refrigerant liquefying mechanism 34 is mounted on the plate 28 so that the fan 4| draws cooling air through the opening 26 at the rear of the base section 23, through the base section 23, through the cut out portion 29 of the plate, through the refrigerant liquefying apparatus 34 and out through a second opening 43 formed in the rear wall of the machine compartment H. A sheet metal duct 44 is secured to the rear of the outer casing H, which duct communicates with the opening 43 to conduct the heated air upwardly so that it cannot commingle with the relatively cool air drawn in through the opening 26. The plate 28 thus forms an air baflle in the air duct. An opening 45 is also formed in the front wall of the machine compartment to permit the cleaning of the condenser 39. This opening is closed by an ornamental cover 49.

Both the entrance 26 and the exit to the air circulating duct are located in the rear wall of the refrigerator which wall isnormally turned to a wall of the room wherein the refrigerator is located. This results in damping the noise of the compressor. The air circulating duct may be lined with noise deadening material .to fur-- ther damp the noise from the compressor.

The refrigerant liquefying apparatus 34 communicates with the evaporator l8 through a suction tube 46 connecting the top of the evaporator l8 and the casing 36 and a capillary impedance tube 4! connecting the bottom of the condenser 39 and the bottom of the evaporator It. A tube also connects the casing 36 with the condenser 39 to convey the compressed refrigerant vapor to the latter.

The tubes 46 and 41 are led through the opening 43 in the rear of the machine compartment [4, through the air duct 44, and through a second opening 48 in the rear of the food compartment ii. The opemng 48 is sufficiently large to permit the insertion of the evaporator l8 therethrough so that the entire refrigerating apparatus comprising the refrigerant liquefying unit 34, the evaporator l8 and the connecting tubes 46 and 41 may be secured in place without disconnecting the tubes 46 and 41.

The opening is closed with a removable inner plate 5! secured to the inner liner I1 by means of the lugs 52 and the bolts 53 and with an outer closing plate 54 secured to the refrigerator casing II by means of the bolts 56. Insulating material 51 ispacked between the two plates 5| and 54. 4

It will be apparent from the foregoing that this invention provides an integral refrigerant liquefying unit the structural parts of which are shaped to direct the cooling air over the part to becooled. This unit is furthermore housed and supported in an air duct in a manner to insurea positive circulation of the air through the duct.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set forth in the appended claims.

What I claim is:

1. In a mechanical refrigerator, the combination of a machine compartment having an upper and a lower opening in its rear wall, a horizontal plate in said compartment located between said openings, a notched-out portion in said plate toward the front of said machine compartment to define an air duct from said lower opening, underneath said plate, through the notch in said plate, over said plate, and through said opening,

reinforced metallic plate in said compartment located between said openings, a notched-out portion in said plate toward the front of said machine compartment to define an air duct from said lower opening, underneath said plate,

4 through the notch in said plate, over said plate,

and through said opening, and a refrigerant liquefying apparatus on said plate and adapted to be cooled by the air flowing through said duct.

3. In a machine compartment of a refrigerator, an air duct therein having an entrance and an exit spaced from said entrance, a refrigerant liquefying apparatus in said air duct, said refrigerant liquefying apparatus comprising a casing containing a compressor unit, a condenser, an air circulating fan, and a shroud, said shroud being adapted and arranged to unite said casing, said condenser, and said fan into a unitary structure and guide the air currents set up by said fan through the condenser and over said casing, said refrigerant liquefying apparatus being positioned in said duct to draw air through the entrance and expel it through the exit thereof.

4. In a refrigerator, in combination, a machine compartment, said compartment forming an air duct having an entrance and an exit, said entrance being remote and below the exit of said air duct, a refrigerant liquefying apparatus in said duct, said refrigerant liquefying apparatus comprising a motor and a compressor housed in a sealed casing, radiating fins on the walls of said casing adjacent the motor, a shroud, one end of which surrounds said radiating fins and is connected thereto, a condenser secured in the other end of said shroud, a fan in said shroud for drawing air through the condenser and blowing it through the shroud over the radiating fins, said condenser, shroud, fan, and compressor being located in the air duct of said machine compartment in a manner to draw air through the entrance end and expel it through the exit end of said duct.

5. In a refrigerator, the combination of a machine compartment forming an air duct, a plate forming a baffle in said duct, and a refrigerant liquefying unit on said plate, said refrigerant liquefying unit comprising a refrigerant condenser substantially sealed in said air duct, said refrigerant condenser having transverse air passages, a fan for blowing air through said duct and through said air passages, a casing in said duct, said casing containing a motor compressor unit and a shroud for directing the air flowing through the air passages of the condenser over the casing, said shroud also holding said condenser and casing in spaced relationship.

WILLIAM B. ANDERSON.

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