US1799940A - Refrigeration apparatus - Google Patents

Description

April 7, 1931- Y E. T WILLIAMS 1,799,940

REFRIGERATION APPARATUS I Filed July 31 1926 2 Sheets-Sheet 2 Patented Apr. 7, 1931 UNITED STATES EDWARD .l. WILLIAMS, OF BROOKLYN, NEW YORK REFRIGERATION APPARATUS Application filed July 31, 1926. Serial No. 126,173.

This invention relates to refrigeration apparatus and has among its objects the object of producing a complete and compact refrigeration apparatus characterized by eflicient design and the interrelation of its constituent parts'or units whereby the'entire apparatus 1s admirably adaptable for domestic use.

Another object of this invention is to produce a unitary assembly in which certain sub-units or parts of a refrigeration system are so related in respect to each other as to enable the ready removal thereof from a refrigeration cabinet or building in an assem bled condition.

These general objects embody a unique relation of a motor-blower-compressor unit with a condenser. The housing of the blower is mounted upon the condenser in such a manner as to permit of the discharge of air from the blower through the condenser. On one side of the blower housing is mounted a motor so arranged as to drive directly the shaft of the blower and the shaft of the compressor which is mounted on the other side of the blower housing. The shafts are substantially co-axial and the motor and compressor tend to compensate for each other in respect to their mounting, the blower housing, which is secured to the top of the condenser.

As a part of the unitary idea, and interrelated therewith, there resides the purpose of improving the efliciency of the refrigeration system by positioning a coil carrying the compressed refrigerant as it passes from one stage of a multi-stage compressor to another,

stage inthe path of the current of air created by the same blower which delivers air to the condenser.

Other and more detailed objects will be pointed out hereinafter in the following description and claims, and an embodiment of my invention is illustrated in the drawings, in which:

Fig. 1 shows a general elevation on line II of Fig. 2,

Fig. 2 shows a side elevation on line IIII of Fig 1,

Fig. 3 shows an elevation of the motorblow-compressor unit mounted upon the condenser, and

Fig. 4: is a view on line IV-IV of Fig. 3.

The refrigerating cabinet or building 10 with which I have illustrated my invention is of a simple construction and comprises, in general, a cold air compartment 11 and a machine compartment 12. The cold air compartment may be of any well-known construction.

The machine compartment has a plurality of side walls 13 in which are disposed louvres 14 through which air may be drawn into the com-partment. The floor or lower wall 15 of the machine compartment is supported away from the floor upon which the entire cabinet rests and it has a hole defined by edges 16. The present design of the hole is rectangular for the purpose of accommodating the casing 17 of condenser coils 18 which are positioned outside of the machine comparta ment. The condenser casing 17 is maintained in its position by flanges 19 which extend from the casing and over the ed es 16 of lower wall 15. makes use of the top of the condenser casing as a portion of the floor of the machine compartment and also permits the easy removal of the condenser from the machine compart- The arrangement ust described ment through a conveniently located door 20.

p In order to simplify the description of my invention I have chosen to illustrate a simple refrigeration system in which all of the various sub-units, with the exception of the chilling tank 21, may be mounted within the ma- 35 chine compartment and upon the condenser casing, thereby enabling all of these sub-units to be conveniently inspected and overhauled at will without the necessity of disconnecting one sub-unit from another. Mounted upon the central part of the condenser casing 17 is a blower housing 22 which is secured by suitable means such as machine screws 23 to the casing. On one side of the blower housing 22 there is mounted a motor 24 to whose shaft 25 there is secured a centrifugal type of blower 26. In addition to driving the blower, the motor also drives a compressor 27 mounted on a hollow hub 28 extending from the blower housing on the side opposite that to which the motor is mounted. This hollow hub 28 has inlet openings 28a through which air is drawn into the inner portions of the hub and of the blower casing by the revolving blower. The air propelled by the blower is driven, laterally of the axis of the blower, from the blower housing through outlet opening 29 which communicates with an inlet opening 30 in the condenser casing. After passing through this opening the moving air circulates about the coil within the condenser and then is discharged from the ends 31 and 32 of the condenser casing.

In the present form of condenser, the inlet opening is placed intermediate the ends 31 and 32 of the condenser casing in order that the air discharged by the blower be efficiently utilized in serving its purpose of absorbing heat from the conduits of the condenser.

The compressed fluid discharged from the compressor is conducted, by a conduit 33, to a separator 34 from which the lubricant is drawn to the low pressure side of the first stage compression cylinder through conduit 35.

The refrigerant is conducted from the separator by two branch conduits 36, 37 which enter within the casing 17 of the condenser near its ends. Within the condenser casing, the conduits may travel back and forth across the condenser forming coils 18, hereinbefore referred to, which terminate in a single conduct 38. The exact arrangement of the coils or the style of condenser used may conform to the ideas of a user without creating a departure from my invention.

Conduit 38 communicates with a regulating device 39, such as the usual float valve, from which the refrigerantis delivered to the expansion chamber within the chilling tank 21 by conduit 40. From the chilling tank, conduit 41 conducts the refrigerant back to the low pressure side of the first stage compression cylinder of the compressor. Other subunits besides the motor-blower-compressor and separator units may be mounted upon the condenser casing, if desired, and I have illustrated the regulating device 39 in dotted outline so as to indicate this fact.

Conduit 42 serves to connect the high pressure side of the first stage compression cylinder with the low-pressure side of the second stage compression cylinder and a portion of 65 this conduit is coiled about the hollow hub 28 extending from the blower housing to which it is secured by brackets 43. The turns in the conduit are so positioned as to permit the free motion of air about them as air is drawn through inlet opening 28 by the blower within the blower housing.

By the arrangement which I have described, all of the air entering into the machine compartment is kept in continuous movement and is eventually evacuated therefrom through the blower housing and the condenser. The fresh air which enters through louvres 14 is dispersed throughout the machine compartment and achieves a relatively high velocity as it approaches the compressor 27 and flows about the turns of conduit 42 just outside of the air inlet openings 28 leading to the blower housing. This air is discharged from beneath the refrigerator, laterally and away therefrom, after having been passed through the condenser casing 17.

I claim:

1. Refrigeration apparatus comprising, in combination, a cabinet having a refrigeration compartment and a machine compartment, a condenser casing constituting an air duct extending through an opening in a wall of said machine compartment, a blower within said machine compartment mounted on said casing and having a passage formed therein,

and a "condenser in said casing outside said machine compartment, said passage connecting said blower with said condenser casing whereby air is evacuated from said machine compartment and through said condenser caslng.

2. Refrigeration apparatus comprising, in combination, a cabinet having a refrigeration compartment and a machine compartment, a condenser casing having a portion serving as a portion of a wall of said machine compartment, a condenser in said casing disposed outside of said machine compartment, and draft producing means mounted upon said portion of said condenser casing and adapted to dis charge air out of said machine compartment through said condenser casing.

3. Refrigeration apparatus comprising, in combination, a condenser casing, a blower housing mounted thereon, a motor secured to said blower housing, and a compressor secured to said blower housing, the blower and the compressor being adapted to be driven by said motor.

4. Refrigeration apparatus comprising, in combination, a condenser casing, a blower having a blower housing mounted upon said condenser casing and adapted to deliver air thereto at substantially right angles to the axis of said blower, a motor mounted on the side of said blower housing for driving the blower, and a compressor mounted upon said blower housing in alignment with said blower and driven by said motor.

5. Refrigeration apparatus comprising, in

combinatlon, a condenser casin said condenser casing, a blower housing hav- 111g an air inlet communicating with th atmosphere, a multiple-stage compressor mounted on said blower housing and con nected to said condenser, and a co i1 con tmg the arge port of one stage of said compressor with the intake port of another stage of sa1d compressor, said coil being disposed in proximity to the air inlet in said blower housing whereby the air driven thrlough said blower housing flows about said CO1 6. Refrigeration apparatus comprising, in combination, a condenser casing having air inlet and outlet openings, a condenser therein, a blower housing having air inlet and outlet openings, the outlet opening of said blower as housing communicating with the inlet opening of said condenser casing, a multiple-stage compressor havin connections with said condenser, and a re rigerant carrying conduit connecting the discharge port of one stage of 5 said compressor with the intake port of another stage of said compressor, said conduit being disposed in proximity to the inlet openings of said blower housing.

7. A refrigerator comprismg a cablnet an having a substantially enclosed machine compartment, a horizontally extending base for supporting machinery within said compartment forming the bottom wall of said compartment, said base having an opening as for permitting the passage of air, a duct formed on the under side of said base, draft producing means mounted on said base over said opening, said draft producing means servin to circulate air in said compartment 4m and through the opening in said base, a motor mounted on said draft producing means at one side, a compressor mounted on said draft producing means at the opposite side and a condenser within said duct.

8. A refrigerator comprising a cabinet having a machine compartment, a horizon tally extending base for supporting machinery within said compartment forming the bottom wall of said compartment, said as base having an opening, a duct formed on the under side of said base, a blower mounted on said base over said opening, a motor supported by and on one side of said blower,

a compressor supported by and on the opposite side of said blower, said motor, blower and compressor being axially aligned and aK condenser within said duct.

9. A refrigerator comprising a cabinet having a lower machine compartment, a bottom wall for said compartment arranged above the level or floor upon which the cabinetis made to rest forming a space under said machine compartment, a compressor and a. motor in sald compartment, a contfi denser in said space and means for evacuatg, a condenser mg air from said com artment and causing therein abloweradt W100 driyeairthrou 11 WW W cool said condenser.

19. A refrigerator comprising a cabinet having a machme compartment, a boxshape cas lng forming an air duct disposed outside said compartment, one side of said caslng formlng a part of a wall of said compartment, a p urality of air outlets for said duct, a central air inletfor said duct, a motor and a compressor in said compartment, a condenser in said duct outside said compartment and means in said compartment for (fiorctmg air through said air inlet into said 11. A refrigerator comprisin a machine compartment, a box-shaped casing forming an air duct disposed outside said compartment, a side of said casing forming a wall portion of said compartment, draft producing means in said compartment mounted on said side of said casing, means including an opening through said wall portion to conduct air from said compartment into said duct and a condenser in said duct.

12. A refrigerator comprisin a machine compartment, a box-shaped casing forming an air duct disposed outside said compartment, a side of said casing having anopening therein and forming a wall portion of said compartment, a blower mounted on said wall portion and adapted to direct air from said compartment into said duct through said opening and a condenser in said duct.

13. Refrigeration apparatus comprising, in combination, a condensing means, a blower, a blower housing enclosing said blower and mounted u onsaid condensing means, a motor secure on one side of said blower housing and supported thereby, a compressor secured to the other side of said blower and supported thereby, the motor, blower and compressor being arranged coaxially on a horizontal axis.

14. A refrigerator comprising a machine compartment, a condenser casing mounted adjacent said machine compartment, the upper side of said condenser casing forming a base, a blower housin mounted on said base, a blower within said blower housing arranged to rotate about a horizontal axis, a motor secured to one side of said blower housing and supported thereby, a compressor securedto the other side of said blower housing and supported thereby, said motor and compressor being in axial alignment with said blower and a communication at the bottom of said blower housing for the discharge of air from said blower into said casing.

, 15. Refrigeration apparatus comprising, in combination, a condenser casing, a condenser therein, draft producing means mounted on said casing having connections with said condenser casing, a multiple stage

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