US1599829A - Refrigerating apparatus - Google Patents

Description

Sept. 14 1926.

c: L. M CUEN REFRIGERATING APPARATUS Original Filed Jan. 17, 1920 4 Sheets-Sheet 1 Sept. 14 1926.

C- L. MCCUEN REFRIGERATING APPARATUS 4 Sheets-Sheet 2 v 3mm M x. wand Original Filed Jan. 17. 1920 C. L. M CUEN REFRIGERATING APPARATUS Uriginal Filed Jan. 17. 1920 4 Sheets-Sheet 5 C. L. M CUEN REFRIGERATING APPARATUS Sept. 14 1926.

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Patented Sept. 14, 1926.

UNITED STATES PATE CHARLES L. MoCUEN, or nnrnorr, MICHIGAN, ASSIGNOR'BY MESNE AssIenMEnrs, '1'0.DELCO-LIGHT COMPANY, or DAYTON, OHIO, A CQRPOBATION or DELAWARE.

REFRIGERATING APPARATUS.

Original application filed January 17, 1920, Serial No. 352,059. Divided' and this application filed October 21, 1924. Serial No. 745,044-

My invention relates to refrigerating apparatus in which a compressible refrigerant such as sulfur dioxid is employed, the same being compressed by a suitable pump or compressor then condensed into a liquid, then permitted to expand in refrigerating coils or the like andthereafter compressed and" so on through continuing cycles. The object of my invention is to provide a simple, eflicient and reliable apparatus of this kind characterized more particularly by certain improvements in the waterv circulating system of the apparatus and in the structure and assembly of the pump chamber and the condenser chamber.

This application is a division of my application for refrigerating apparatus, Serial No. 352,039, filed January '17, 1920.

In the drawings:

Fig. 1 is a plan view of my apparatus; Fig. 2 a section on the line 22 of Fig. 1;

Fig. 3 an end elevation of the apparatus with the electric motor removed;

Fig. 4 a side elevation of the apparatus with portions of the two cylinders or chambers broken away as on the line 2-2 (extended) of Fig. 1 and with the water valve shown in section as on the line 88 of Fig. 1;

Fig. 5 is a section on the line 5 .5 of

Fig. 4;. 7

Fig.6 a vertical section on the line 6-6 of Fig. 5; and

Fig. 7 a horizontal "section on the line 7- 7 of Fig. 6.. i

As my invention relates to the pump and condenser cylinders it is unnecessary to show the complete refrigerating system and therefore the refrigerating coils more parsuch as an ticularly which may be of the usual and well-known character are not shown. Rofe'rring to" the particular embodiment of the apparatus as herein shown, the same comprses a punip cylinder or chamber 1, a compressor or pump 2 therein, a prime mover electric motor3 for driving the pump and a conderser cylinder or chamber it all preferably mounted upon a suitablesingle base plate 5 and having the connections, coils, and other devices hereinafter set forth in detail. i

The pump v2 is of the general construction and mode of o eration as the pump illustrated and described in Leonard Patent No. 1,233,069, dated July 1917. This pump is characterized by two intermeshing herring-bone gears, 6 and 7 contained within a casing 8 and driven by the shaft 9 which is in turn driven by the extended armature shaft 10 through the medium of the coupling '11. The pump is submerged in a body of oil contained within the pump chamber (the oil level being between the test cocks a) and the oilis supplied to the gears through a series of restricted passages 12 entering through the top of the casing and emerging from the interior thereof at the top middle portion of said gears. In practice'these restricted oil supply openings 12 are formed for the most part by central bores through screw plugs 13, Fig. 6. The gas as it comes from the refrigerating coils through the inlet pipe 14 and inlet passage 15 through the NT OFFICE.

pump head 16 enters the pumpchamber at munication with the is compressed by these gears and is discharged at the upper portion of the casing into the horizontal discharge passage 18 and the vertical discharge pipe 19. This discharge pipe 19 extends above the oil level in the pump chamber and towards the up per part thereof, discharging the gas into the space above such body of oil.

The pump cylinder is provided with a removable head 20 to whose lower sidethe cooling coils for the pump cylinder together with thebafiie plates'and coil supports are attached so that such cover and said parts constitute a unit which in assembling the structure is inserted within the'pump chama the temperature of the cooling coils in the which are screw threaded-into the dependingbosses 25 of the cover. These rods are also adapted to support and position the two bafile plates 26 and 27, the former of which is clamped between the lower distance tubes 28 interposed between the plates 23 and 26 and the upper distance tubes 29 interposed between the plates 26 and 27. The

plate 26 has its periphery upwardly flanged so as to retain any liquid refrigerant that might possibly be discharged from the pipe 19 and the same is provided with a central opening through which such discharge pipe 19 passes and which is provided with an outwardly extending flange 3O fitting around such pipe. The other baffle plate 27 which is itself clamped between the lower ends of thebosses 25 and the top of the distance tubes 29 has a downwardly turned flange and is of less diameter than the plate 26.

The gas .whichis discharged from the pipe 19 strikes against the central ortion of the plate-27 and is downwardly eflected so as to separate any liquid refrigerant from the gas. Thelower plate 26 acts to catch any coils 22 because it is necessaryto keep the condenser chamber at a'lower temperature,

such liquid refrigerant and prevent it from dropping upon the body of oil below, such, plate retaining the liquid refrigerant until such time as in the course of operation it will become gaseous and pass on to the condenser chamber;

The cooling coils 22 are likewise secured to the cover 20 as shown in Fig. 6 wherein it is seen that the ends of these coils are secured to couplings 31 which pass through vertical openings in the cover and are secured to the .pipe fittings 32 extraneous of the cover.

The cover 20 is provided with a central gas outlet 33 which is controlled by a hand operated valve 34 contained within a valve casing 35 removably' secured to the cover by the bolts 36, In the drawings this valve 34 is shown closed but by removing the screw cap 37 and turning the screw threaded stem 38 of the valve by means of a suitable socket wrench, the valve may be readily opened and the same remains in open condition during the regular operation of the through the condenser coils may be reguap aratu's.

ext describing the condenser chamber and associated parts, the. cooling coils 39 are of much greater extent than the cooling in order to condense the incoming refrigerant or gas supplied from the pump chamber.

These coils 39 are supported by a horizontal plate 40 which in turn is supported from the lower side of the top cover 41 of the condenser chamber through the medium of the vertical rods 42 which screw into the bosses 43 depending from the lower side of the plate 41. The upper' ends of the coils 39 are provided with fittings 44 which pass through vertical openings in the plate 41 and are thereat secured to pipe connections 45 and 46. The pipe connection 46 is pro- "vided with a valve for controlling the supply of water through the coils 22 and 39 and for regulating the amount of flow relatively through such two coils. As shown in Fig. 5 this valve is a hollow plug valve 47 provided with a stem 48 to whose upper end is secured an operating handle 49. This valve is located in the pipe connection 46 which is provided with the port 5000mmunicating with the outlet end of .the coil 39, a port 51 communicating through the horizontal pipe 52 with one of the pipe connections 32, and also with a port 53, which ports are governed by the valve 47. For this purpose the valve has a central vertical. passage 54 and a lateral communicating way or passage 55 on its periphery. In addition this pipe connection 46 has an outlet passage 56 with which the outlet of the coil 39 is adapted to communicate directly through the passage 53, or indirectly through pipe connection 52, cooling coils 22 and pipe connection 57 which connects between the outlet of the coils 22 at one of the pipe connections 32 and the pipe connection 4-6.

WVhen the valve 47 is in the position shown in Fig. 5 all of the water which passes through the coils 39 is passed through the coils 22 inasmuch as the passages 54 and are in communication with port 51 and pipe 52. When the valve 47 is slightly rotated in a clockwise direction a portion of the water may be passed directly to the discharge pipe 56- through the ,port and passage 53, the remainder which may be as much as desired passing through the coils 22. Upon a further rotation of the valve 47 the port 51 may be entirely closed and the supply vof water to the coils 22 may be cut 'oif and all of the water passed directly through the port 53 and'dischargc pipe 56, it being understood that at this time the passage way 55 will be in register with the port 53; By rotating the valve still further the amount of water passing lated by restricting the passage 55 by incomplete register between such passage and .the port 53. The amount of flow through 39 may be controlled and regulated to a nicety and also by the employment of a single valve all or a portion of the water discharged from the condenser coils may be byv-passed through the pump chamber coils, and also the amount of the flow through the condenser coils may; be regulated to any desired extent.

From the pump chamber the gas passes upwardly through the outlet 33, past the valve 34, through the horizontal pipe 58 through a passage 59 in valve casing 60 (similar to the casing 35) past the valve 61 (which in operation would ofcourse be open) and through the inlet port 62 in the cover 41 of the condenser chamber, as shown in detail in Fig. 2.

The cylinder covers which are thus removable with their cooling coils are connected together by the water and gas connections andare therefore both removable at the same time together with such coils,

I, denser cylinder after the fastening bolts 21 are removed.

l'Vhat is claimed is as follows 1. In a refrigerating apparatus, the combination of a pump cylinder and a condenser cylinder, arranged adjacent one another, cooling coils located in such cylinders, removable covers for such cylinders having pipe connections with their respective coils, pipe connections between the two covers, a valve casing mounted on one 'of the cylinders and having ports and passages communicating with the outlet end of the concoils and" with both the inlet and outlet ends of the pum'p cylinder coils,and a single valve located in such casing and governing said ports and passages.

2. In a refrigerating apparatus, the combination of a pump cylinder and a condenser cylinder, arranged adjacent one another,

cooling coils located. in such cylinders,removable covers for such; cylinders having pipe connections with theirrespective coils, pipe connections between the two covers, a va ve casing mounted on the cover of one of the cylinders and forming part of one of said pipe connections for clamping one end of the adjacent cooling coil to said cover, said valve casing having ports and passages communicating with the outlet end of the condenser cylinder coils and'with both the inlet and outlet ends of the pump cylinder coils, and a single valve located in such casing and governing said' ports and passages.

3. In a refrigerating apparatus, the combination of housing means having two openings, a removabe cover for each of such openings each cover having an inlet and an outlet, a coil supported by eacho-f such covers and connected to the inlet and out-. let thereof, and pipe connections from one cover to the other communicating with the inlets andoutlets of said covers, either of said covers being'removable from the houstherein,

ing means without 4C. In a refrigerating apparatus, the combination of housing means having two openings, a removable cover for each of such openings each cover having an inlet and an outlet, a coil supported by each of such covers and connected to the inlet and outlet thereof, and pipe connections from one cover to the other communicating with theinlets and outlets of said covers, said pipe connections rigidly tying together said covers whereby they may be removed as a unit.

In a refrigerating apparatus, the combination of housing means comprising two cylinders arranged side by side each having a top opening, a removable cover for each of such openings each cover'having an inlet and an outlet, a coil supported by each of such covers and connected to the inlet and outlet thereof, and pipe connections :from one cover .to the other communicating with the inlets and outlets, of said covers, said covers being removable from the housin means without dismounting any part of the latter.

6. In a refrigerating apparatus, in comi said cylinders, a motor carried b said base,

a rotary pump mounted in one o said cylinders and direct connected with the of said motor, the other of cover for each armature a condensing coil mounted 1n said cylinders, a removable a common supportingbase for of said cylinders, each cover being removable independently of the other orof the cylinders, and pipe connections for connecting said cylinders, said pipe onnections being carried entirely by an removable with said covers.

8. In a refrigerating apparatus, in combination, two cylinders arranged side by side and. having cover for each such opening, each coverhavtop openings, a removable ing a water inlet and a water outlet and a port for the refrigerant, a cooling coil suspended from each cover and connected to the inlet and outlet thereof, outside piping con. necting the inlets and outlets of the cove? and a conduit connection from the refrige ant port of one cover to that of the other.

9. In' a refrigerating apparatus, a combination of housing means, a pump located two cooling 'coils' located therein,

two removable covers for said housing means, one for each c011 and having p1pe.

connections with their respective coils, pipe connectlons between sald covers, a valve cas:

5 ing mounted having ports on said housing means and and passages communicating with the outlet end of the condenser coil CHARLES L. McCUEN.

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