US 1874803 A
Description (OCR text may contain errors)
A 30, 1932 F, M, mu 1 ,874,803
HEAT EXCHANGE lgcmmisl Filed Jan. 12. 1951 Patented Au 30, 1932 n mes 1 FRANK MAXIQABD REED, or OLEARFIELD, PENNSYLVANIA HEAT EXCHANGE MECHANISM,
Application med January 12, 1931. Serial No. 508,255.
The object of this invention is to utilize the heat of a compressed gas advantageously: .A particular object of the present invention is to raise the temperature of a body of ,iwater by causing a gas under pressure to.
travel through the same, and a further object of the invention is to provide a heating mechanism in which a permanent gas will be circulated and repeatedly compressed so as to i acquire heat and give out its heat for the purpose of raising the temperature of a room, a body of water, or other matter. One embodiment of the invention is illustrated in the accompanying drawing and will be hereinl after fully described, the novel features being particularly pointed out in the appended claims.
In the drawing: Figure 1 is a diagrammatic illustration of l the invention, and
Figure 2 is an enlarged sectional elevation of a. thermostatically controlled valve arrangement which is employed in the practical application of the invention. Referring more particularly to the drawing, the numeral 1 indicates a tank which preferably has its wall of hollow construe-w.
tion filled with some heat-insulating mate-,- rial, as indicated at 2. Near the bottom of F this tank, a cold Water pipe 3 leading from a source of supply is fitted to the same, and from the top thereof a hot water outlet pipe 4 leads to a point of use. "Across the interior of the tank, near the top thereof, is a horizontal partition or bafiie 5 having a central opening 6 therethrough' for a purpose which will presently appear. Locat'ed i7n'theflovgir pgrtion of the tank is ab'coil ,pre era y o co per i in or'tu in having its ends fitte d thr u gh the opposi i sides of the tank. The outlet end of the coil is connected directly to a pipe 8 which is equipped with an automatic erpansion valve 10 of any suitable construction, and in the length of said pipe is a coil 11, the valve 10 being located between said coil and the tank, as shown. The coil 11 may be a refrigerating coil and is indicated as being disposed within a clo spre 12 which may be an ordinaryrefrigerating chamber. From the coil 11 a pipe 13 extends to a pump or compressor 14 which is drivenby an electric motor15, and by the action ofwhich the gas within the circulating system is compressed to ahighdegree and, asa result, is heated, The compressor 14 and the motor 15 may be of any approved form and are illustrated in a conventional manner only, the details of their construction being immaterial in the present instance. The compressed gas is driven through a pipe 16, and this pipe is connected with the coil 7 through a branch pipe 17 equipped with a valve 18 which is controlled thermostatically. There is also a by-pass pipe 19 connected to the pipe .8 between the valve 10 and the tank 1 and connected with the pipe 16 through'the same fitting that connects the branch 17 therewith, the by-pass pipe 19 being equipped with a valve 20 which is controlled thermostatically and operates simultaneously with the valve 18. In the pipe 19, between the pipe 8 and the valve 20, is formed a coil 21 which is located outside the tank and serves to elongate the pipe 19 whereby the gas travels 1ilng therethroughmay'give'off some of its eat.
The valves 18'and 20 have their stems fitted through respective valve casings or pipes,
with their ofiterends slidably mounted in couplingsleeves 2 which receive a push rod 23 connected with the respective valve stems b coiled springs 24, as shown most clearly in ig. 2. The push rod 23 is supported by the coupling sleeves 22 and by the lower end of a lever 25 which isfulcrumed at its upper end upon a' bracket 26 which is secured to and projects from the side of the tank. Within thetank 1 is mounted a thermostat, indicated conventionally at 27 having one member ex-, tending through the side of the tank and con: nected with a diaphragm or expansible member 28 which in turn carries a rod 29 projecting through and supported by a casing 30 and having its outer end pivoted tothe lever 25 between the ends of the latter. The casing 30 is secured upon the side of the tank in any suitable manner and serves to support and guide the rod 29 and the outer end of the "mowablemember of the thermostat, as well i for any reason rise K as to protect the diaphragm or bellows 28 from damage by chance blows. Normally, the valve 18 is open and the valve is closed so that the compressed hot gas may circulate through the pipe 17 and the tank, but if the temperature of the water in the tank should above the temperature for which the thermostat .27 is adjusted, the thermostat will be expanded and the lever will be consequently rocked so that the valve 18 will be closed and the valve 20 opened, as illustrated in Fig. 2, whereupon the gas will circulate through the pipe 19 and the coil 21 around to the pipe 8, instead of flowing through the tank. When the temperature drops again to a point below that for which the thermostat is adjusted, the thermostat will contract and the leven 25 will be rocked in the opposite direction to open the valve 18 and closethe valve 20, thereby restoring the normal circulation of the gas. 7
The apparatus is intended to utilize some permanent gas, such as carbon dioxide,-sulphur dioxide, or anhydrous ammonia, the gas giving up its heat in the tank, and then flowing to the coil 11 where it expands anda'bsorbs heat from the surrounding air and adjacent articles, then passing to the compressor where it is subjected to compression suflicient to liquefy it and, as it is so compressed, it will be raised in temperature, as is well known. v
The action of the gas in heating the water maybe comparatively slow, and to expedite the raising of the water to the desired temperature, I provide a super-heater above the baffle or partition 5, which, in the present instance, is shown as an electrical resistance coil 31 to which current is supplied over wires 32 in an obvious manner, and in one of said feed wires isinserted a switch 33 of any approved construction, controlled by a thermostat 34 mounted in the tank above the baflie' 5, as shown. The partly heated water within the lower portion of the tank will rise through the o ening 6 of the battle and as this opening is re atively small, the fiow of water therethrough will be retarded and the super-heater 31 will act upon it through a suflicient interval to raise its temperature to a high degree. 3
The apparatus is obviously simple and compact and ordinarily will require no attention after it has once been installed and definitely adjusted.
Having thus described the invention, I claim:
1. Means for the purpose set forth com prlsing a closed circulating system including a coil, a permanent gas filling the system, a compressor in said system whereby the gas in the system may be caused to circulate and to be compressed as it passes to the coil, means for maintaining matter to be heated in proximity to the 0011, a by-pass connected to the circulating system at opposite sides of the coil valves in the by-pass and at one end of the coil, and means controlled by the temperature of the matter to be heated to simultaneously open one of said valves and close the other valve for establishing the flow through the coil or diverting flow through the by-pass.
2. Means for the purpose set forth comprising a circulating pipe, a cooling coil in said pipe, means connected with the pipe for effecting circu ation of a gas therethrough and compressing the gas as it flows from the coil, a second coil adapted to emit heat from the gas, a tank surrounding the second coil, a by-pass connected with the circulating pipe atopposite sides of the tank, and thermostatic means actuated by the temperature of the material in the tank to control the flow of the as through the coil in the tank or through the y-pass I 3. Means for the purpose set forth comprising a tank, a coil disposed in the lower portion of the tank, a circulating pipe connected with said coil, means for-effecting a to the coil, a bafile in the upper portion of the tank having an opening therethrough, and a resistance coil in the tank above the battle.
In testimony whereof I aflix my signature.
FRANK MAYNARD REED. [n 5.
the coil and compressing the gas as it flows v