US1828294A - Electric heating plant - Google Patents

Description

Oct. 20; 1931. E PROVENCAL 1,828,294

ELECTRIC HEATING PLANT Filed March 31, 1930 2 Sheets-Sheet l ."LE-l IN is I.

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Oct. 20, 1931. E; PROVENCAL ELECTRIC HEATING PLANT Filed March 51, 1930 2 Sheets-Sheet 2 BY 6, 9, BM L HTTO/P/VZK Patented Oct. 20, 1931 r 1,828,294

UNITED STATES PATENT OFFICE ELPHEGE PROVENCAL, OFST. HYA CINTHE, QUEBEC, CANADA nnnc'rmcnm'rmo PLANT Application filed latch 81, 1930. Serial No. 440,548.

The invention relates to an electric heat water inlet 18 connected to a radiating sysing plant, as described in the present specitern through the return pipe 19, the exhaust fication and illustrated in the accompanying outlet 20 connected to a drain pipe 21, the drawings that'forrn part of the same. feed water outlet 22 adjacent to the high 1* The invention consists essentially in diwater level of the tank and connected to the rooting the heating fluid through heated en outletfeed pipe 23, and the bottom feed outclosures in divided quantities and superheatlet 24connected to the lower outlet feed pipe ing in passage as pointed out in'each claim 25. I p I for novelty following a description in detail The tank 15 preferably stands on the legs of an acceptable construction. a I I 26 and carries the water gauge 27. I

The objects of the invention are to furnish The cold water inlet pipe 17 forms at its to the public an economical heating system discharge end within the tank a seat for the whereby hard fuel and liquid fuel maybe valve 28, and this valve 28 is connected to a readily dispensed with and yet maintain the valve gear 29 whichis operated by the fioat system at a moderate cost to the consumer; 30, this being a very well known means of 55, to insure convenience and flexibility in remaintaining the water at a predetermined gard to the operation of the plan as well as level in the tank 15. safety in respect to the continued use of the The hand operated valve 31 is introduced heating system during the absence of the atin the drain pipe 21, while the hand operated V tcndant; to eliminate noise, dirt and dust, unvalve 32 is introduced in the outlet feed pipe 7Q pleasant smells and noxious and unhealthy between the outlet 24 and the junction of gases; to avoid interference with radio rethe outlet feed pipe 23 and the outlet feed ceiving apparatus; and generally to provide pige 25.

H a heating system which will be very reliable he electric oven 33 stands on the feet 34 r and free from complicated mechanisms, and and has the insulated walls 35 and within this at the same time be produced and maintained oven 33, the inlet water manifold 36 is inat a moderate cost. I v stalled and directly connected to the inlet In the drawings, Figure 1 is a sectional pipe 37 extending from the junction of the I side elevational view of thecomplete heating feed pipes 23 and 25. p Y

plant. a The battery of heating tubes 38 preferably Figure 2 is a cross sectional view on the of copper extend upwardly from the correline 2-2 in Figure 1. sponding outlet ports in the manifold 36, as

Figure 3 is a cross sectional viewron the many, as may be comfortably contained across r line 3-3 in Figure 1. the oven, and these tubes 38 extend upwardly Figure 4 is a cross sectional view on the adjacent to the top'of the oven and thereline 44 in Figure 1. along for the greater part of the length of Figure 5 is a sectional plan view'of the the oven, being turned downwardly at 39 plant. a r and slightly rearwardly to within superheat- Figure 6 is an enlarged detail of the autoing distance of the electric element 10 which matic valve operating mechanism showing is supported on the bottom of the oven 33, the same in elevation. this element having a key 41 operated by suit- Figure 7 is a sectional detail of the valve able thermostat. 7 operating mechanism. a The tubes 38 extend over the element 40 I, Like numerals of reference indicate correin a forward direction to the outlet manifold V sponding parts in the various figures. 42 entering corresponding inlets in said out- Referring to the drawings, the numeral 15 let manifold and by this time any water indicates the feed water tank which is conwhich has not been generated into steam structed with a cold water inlet 16 having will quickly vaporize and pass out through v the inlet pipe projecting therethrough conthe outlet pipe 43 and to the steam chest if nected to a source of supply and the return desired, but it is preferable to superheat the i to steam thus generated, and therefore a larger oven 44 is furnished having the insulated walls 45.

The outlet pipe 48 extends into the oven 44, and within said oven carries inlet manifold 46 from which the battery of tubes preferably of copper extend upwardly, these tubes 47 being of slightly greater diameter than the tubes 38.

The tubes extend upwardly adjacent to the top of the oven 44 and therealong to the downward turn 48 and from this downward turn 48 the tubes extend in a rearward direction within heating distance of the electric element 49 which is operated by the key 50 preferably by thermostatic operation.

The tubes 47 extend along over the element 49 and enter corresponding orifices in the manifold 51 and from this manifold the riser pipe 52 extends upwardly and out wardly through the wall of the oven 44 into the steam chest or reservoir 53 from which a delivery pipe 54 extends to the radiator system, the chest standing on the legs 55 and having the drain cock 56, for the condensation water from the steam.

The drain pipe 57 extends from the outlet manifold 51 to the tank forming the reservoir 53, consequently any condensation that may occur in the system on reaching the outlet manifold 51 will flow into the tank 53, which may be relieved by opening the drain cock 56.

The drain pipe 58 also leads from the outlet manifold 51 to the valve casing 59 and the drain pipe 60 leads from the inlet valve manifold 46 to the valve casing 59 which is relieved by turning the cock 61.

The drain pipe 62 leads from the inlet water manifold 36 and the drain pipe 63 leads from the outlet water manifold 42and both these pipes 62 and 63 lead to the valve casing 64 which is relieved by-operating the cock 65. 7

Therefore all condensates may be removed and the system kept free from water during the operation when the invention is utilized as a steam system, but when it is used as a hot water system, the air may be relieved in the same manner. and if used as a hot air system, the same relief valves will be usedto promote the circulation of the air or a construction of a somewhat similar nature.

The numeral 66 indicates a thermostat of conventional pattern, and not described in detail herein and having the usual connecting rod 67 customarily applied to a damper, but in this case operatively connecting the thermostat moving parts to a valve stem crank handle 68 operating a valve 69 in the outlet feed pipe 23.

The operating connection from the thermo stat rod 67 to the crank handle 68 is through an air cushioned telescopically. mounted cylinder 7 0 and having the air outlet 71 and slots tively weak tends to keep the cylinder in 1 its outward normal position during the flow of the water from the feed water tank to and through the batteries of tubes, but when it is predetermined that the heat shall not rise above a certain temperature, then the thermostat operates and moves the cylinder inwardly through its rod connection 67 in said cylinder.

The inward movement of the cylinder 70 closes the ports 72 and compresses the air between the cylinder end and the piston head.

So soon as the cylinder has reached its inward position, the latch 78 at the end of the spring-held bar 79 is operated by the spring 80 and snaps over the end of the cylinder 70 and holds it downwardly.

The valve 69 is now closed and the water shut off and it is only when the thermostat releases the latch 78 that the cylinder 70 St-flltS to regain its outward position, but this is not regained by any means in an instant for the cylinder travels outwardly very slowly therefore the water begins to trickle into the inlet manifold and the battery of tubes, consequently the water before reaching any volume is very hot and has begun to steam, thus each battery of tubes in the first and second ovens becomes a form of flash boiler and this is particularly emphasized in the second oven where really the steam is superheated and be comes practically dry steam, of course there is always the liability of condensai'i-ion, but the condensates may be relieved from the system at several places.

The thermometer 81 is connected with the oven 33, the thermometer 82 with the oven 44 and the thermometer 8-3 with the steam chest or reservoir tank 53, therefore the temperatures of these receptacles are fully and con stantly indicated and always within view of the attendant of the plant.

In the operation of the invention, the cold water is fed in through the cold water pipe until the predeterminedlevel reached, this level being controlled by the float operated valve.

In the first place the feed water pipe to the oven equipment is brought into communication with the first oven by turning the valve slightly either above or below so that the water just trickles in the two ovens previously heated by the electrical element".

The small trickle of water heats very 1 pidly within the first oven and rises through the battery of tubes and by the time it has reached and passed the electric element in the first oven, the water has mostly vaporized and become steam.

The steam and water or the steam only,

if the oven is very hot, passes through the number two. In any case the steam rising into the steam chest tank or reservoir tank, as it may be called, passes out through the outlet pipe to the circulatory system 84 and back again through the system as customary in heating systems tothe return pipe in the feed water tank.

This circulation continuing the water in the system becomes quite hot, and it will be noticed that this hot water returning to the feed water tank is drawn very close to the upper level and returned through the ovens, of course going through the circulatory system 84, it has cooled to some extent, but when it gets too hot the excess temperature is reduced by the operation of the thermostat which closes off the feed water tank and leaves the water as it stands in the system until the whole system cools sufficiently for it to start again.

This is all done automatically, naturally it may be done by hand if it is desired, but it is much better for the temperature in any building to be taken care of according to the needs of the occupants.

What I claim is:

1. In an electric heating plant, a feed water pipe suitably connected to a supply, a cylinder and a piston head, forming an air dash pot and supported on a bracket extending from said pipe and comprising a spring-held cylinder having an open air hole therethrough and spring held from the piston head, a latch spring-held to said cylinder and adapted to snap thereover in the inner position of said cylinder, a thermostatic device having connections operating said cylinder and said latch, an electric oven having water passages therethrough having a common connection to said feed water pipe, and a common outlet member and a circulatory heat radiating system connected to said common water outlet.

2. In an electric heating plant, a feed water tank having a feed water pipe therefrom, an electric oven containing an electric heating element, manifolds forming the common inlet member and a common outlet member, a battery of hot water tubes extending upwardly from said inlet manifold along and downwardly to said heating element and along to the outlet manifold, an outlet pipe from said outlet manifold, a second oven having an inlet for said outlet pipe from the first oven, manifolds in the second oven formin common inlet and outlet members, tubes 0 larger dimensions extending up in a battery from the common inlet member in the second oven and along and downwardly and along to the common outlet manifold, an electric element under said tubes adjacent to said outlet manifold, a riser from the outlet manifold in the second oven and connected with an outlet pipe through the wall of the second oven, and a steam reservoir tank having a fluid outlet pipe and a circulatory heat radiating system connected to said fluid outlet pipe and terminating in a return pipe to said feed water tank. I

3. In an electric heating plant, a feed water tank having a water outlet pipe therefrom, an electric oven containing an electric element and having inlet and outlet manifolds, and a battery of hot water tubes therebetween, drain pipes from said manifolds to a common valve casing forming a drain cock, a second oven having inlet and outlet manifolds connected to the water passages through the first oven and having hot water tubes therebetween, and a riser pipe from the outlet manifold, a steam chest or reservoir tank connected to said riser pipe, drain pipes from the inlet and outlet manifolds in the second oven leading to a valve casing form-

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