US1672086A - Condenser for refrigerating apparatus - Google Patents

Description

T. F. RAINSFORD ET AL CONDENSER FOR REFRIGERATING APPARATUS June 5, 1928. 1,672,086

Filed May 18, 1925 2 Shgaets-Sheet 1 BY WW A a/M Wm fiM A TTORNEY.

June 5, 1928. 1,672Q086 T. F. RAINSFORD ET AL CONDENSER FOR REFRIGERATING APPARATUS Filed May 18, 1925- 2 Sheets-Sheet 2 24 I ATTORNEY6' Patented June 5, 19 28.

UNITED STATES PATENT OFFICE.

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CONDENSER FOB BEFRIGERATING APPARATUS.

Application filed. May 18, 1925. Serial No. 31,151.

associating the fan with the condenser' whereby more efficient and satisfactory results are obtainable during operation and whereby a measure of protection against U j exterior contact, and consequently a measure of safety, is obtainable.

The invention has also as an object to simplify, render more eflicient, and improve generally apparatus ofthis character, and the means for attaining all of the aforesaid objects as well as other advantages, and the details of the construction of one illustrative example of the invention will be made more apparent as this description proceeds, especially when considered in connection. with' the accompanying drawings, wherein: i

,Figure 1 is a view partly in vertical section and partlylin elevation of a refrigerating apparatus constructed in accordance with our invention,

Figure 2 is a vertical sectional view taken substantially on aplane indicated by the line 33 in Figure 1,

Figure 3 is a top plan view of the apparatus, and

Figure 4 is a fragmentary sectional view of a modified form of construction.

Referring now particularly to the drawings wherein like reference characters'indicate like. parts, it will be noted that the ap-' paratus consists essentially of a base 10 formed preferably with a plurality of depending legs or feet 11 and with a raised table .or pedestal 12, to which an electric motor 13, used in operating the apparatus, may be secured by means of bolts 14; threaded into pedestal 12.

Base 10 is formed'with an upright extension 15 to which a housing 16 is'secured, preferably by means of bolts 17. Housing 16 is preferably formed with an extension 18 constituting the cylinder of a compressor to which the refrigerating medium is conducted through an inlet 19, this refrigerating medium being then compressed and ex pelled therefrom through a conduit 20 to a radiator yet to be descrlbed. Y

J ournaled within suitable bearingsformed in the extension'15 of the base and in casing 16 is a shaft 21, which shaft extends centrally-through the condenser of the appara tus and is connected to the motor 13 prefer ably by means of a flexible coupling 22. Shaft 21 is rotated by motor 13 and the piston (not shown) of the compressor is suitably connected to' the shaft so as to be reciprocated thereby.

The condenser comprises a lowerheader 23 formed preferably, although not necessarily, integrally with base 10. A conduit 24 having a threaded connection with header 23, leads to the brine tanks (not shown), whereby the refrigerating medium, after passing through the condenser, may be conducted to these brine tanks. 2

The upper hgader consists essentially of a cap plate 25 substantially bowed or semicircular in transverse cross section which is cooperatively associated with a top header plate 26. This latter plate is provided with a plurality, here shown as three, threaded apertures for'the reception of the threaded lowerends of tie-bolts or. rods 27 which project upwardly from plate 26, passing through apertures 28in cap plate 25 and having threaded ends for the reception of cap nuts 29. The upper face of plate 26 is peripherally grooved for the reception of a sealmg wire 30 adapted to rest therein and to be.

engaged by an annular horizontal flange 31 formed on cap plate 25'. Consequently when cap nuts 29 are tightened cap plate 25 is forced tightly against sealing wire 31 and a water tight compartment or header 32 is formed In Figure 4 the cap plate 25 is shown as welded to header plate 26' at its periphery as shown at 27. In thisconstruction the bolts 27 are eliminated.

, Upper header 32 is connected to lower header 23. by'a plurality of vertically extending water tu es 33, the upper ends of which extend through suitably arranged apertures in plate 26 and are anchored thereto as by flaring the ends of the tubes as indicated at 34.. The lower ends of these tubes pass through and are anchored in anchor plates 35, preferably in the same manneras the upper ends of the tubes, these plates 35 resting on u standing bosses 36 formed on wall 37 0 the lower header. These are centrally apertured as shown at 38 for affording communication between the tubes 33 and header 23, the plates being rigidly mounted upon bosses 36 by means of bolts 39 passing upwardly through the headers and threadedly engaging the said anchor plates.

Associated with the water tubes 33 is a plurality of horizontally arranged spaced fin or heat radiating plates 40, which plates preferably extend entirely "transversely and longitudinally of the Condenser. Arranged centrally of the condenser in a space pro- .Vided by properly arranging water tubes 33 and by interrupting certain of the fin plates 40, as clearly shown in Figure 1, is a fan 41. Fan 41 is keyed as at 42 to shaft 21 and is prevented from longitudinal displacement on this shaft by means of a fixed collar 43 on one end and an adjustable collar 44 on the other, which latter element constitutes a part of an expansible chamber 45 surrounding shaft 21 and constituting a seal therefor. Liquid for this seal is supplied through a passageway formed in shaft 21 which communicates with the interior of casing 16 which contains a supply of lubricant. By keying fan 41 to shaft 21 it is operated by motor 13 when shaft 21 is rotated. The tubes and fin plates are also spaced and arranged to provide atransverse passage through which said shaft 21 extends.

. The fan 41 is arranged substantially centrally of the assembled condenser, it being centered both laterally and longitudinally of the condenser so that it is entirely surrounded by the fin plates40 thereof and by the water tubes 33.

In operation, air will consequently be drawn from one vertical face of the conprotection against exteriorinterference such as moving objects or the clothing or person of the operator. In constructions involving a fan or the like rotating at a relatively high speed there is always an element of danger owing to the possibility of contact with the fan of some object or of the person of the operator. With this present construction the fan is entirely encased or surrounded by the condenser construction and the above noted objections are entirely eliminated.

As nrentioned above, during operation, the. refrigerating medium is compressed by the compressor 18 and is forced through conduit 20 which is preferably connected to a valve 46, which in turn is connected to an interiorally threaded laterally extended boss 47 formed on cap plate 25. Hence the refrigerating medium enters header 32 and .50 formed on cap plate 25.

With the herein described construction the condenser may be quickly and easily manufactured and assembled with facility owing to its simplicity and the accessibilit of the connections. Furthermore worn or amaged parts may also be readily replaced.

While one specific embodiment of the invention has been shown and described somewhat in detail, it is not intended that the invention should be unnecessarily limited, as

various. rearrangements and modifications $5 of the specific construction shown may be made as found necessary or desirable without'departing fromthespirit and scope of the invention, and to this end reservation is made to make such chan es as may come within the purview of t e accompanying claim.

What we claim as our invention is:

In a condenser construction, upper and lower headers, vertical water tubes connecting said'headers, horizontal fin plates associated with said tubes, said 'tubesand fin plates being arranged to form a recess substantially centrally of the condenser structure for receiving a cooling fan, and spaced anchor plates for said tubes secured to the lower header upon opposite sides of the recess aforesaid and having apertures therein communicating with said lower header.

In testimony whereof we aflix our signatures.

THOMAS F. RAINSFORD. THOMAS C. WHITEHEAD.

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