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July 1937, c. G; BORDEAUX 2,087,613 ` HEATING SYSTEM Filed May 4, 1933 _` ,4 7' Tak/vs Ys Patented July 20, 1937 2,087,613mi UNITED STATES PATENT @FFME Claude G. Bordeaux, Albany, N. Y. _ Application May 4, 1933, Serial No. 669,410 2 Claims. (Cl. 237-123) My invention more particularly relates to a va por heating system which is particularly applica ble to Vehicles propelled by internal combustion engines, although it is not limited thereto. 5 The general objects of my invention are to provide a vapor heating system which is simple and compact and which has a quick and effective heat radiation as compared with systems in stalled in the circulating system connected with 10 ' the radiator and with the cylinder jacket which have hitherto been proposed. ' Another object of my invention is the provi sion of an unobstructed circulating system in cluding a steam generator and a radiator oper ating at a predetermined pressure with associ ated means for introducing water into the sys tem and maintaining a substantially constant quantity. Other objects of my invention Will appear in 20 the specification and will be particularly pointed out in the claims. My invention will best be understood by refer ence to the accompanying drawing in which* Fig. 1 is a side elevation of a device embody 25 ing my invention; Fig. 2 is a perspective View or” the vapor gen erator; Fig. 3 is a longitudinal sectional View of a check valve; 30 Fig. 4 is a sectional view illustrating a valve located in the by-pass around said check valve. and Fig. 5 is a View similar to Fig. 4 illustrating a modiñed form in the by-pass. Like reference characters indicate like parts 35 throughout the drawing. Referring to the drawing I8 is aninternal com bustion engine of a vehicle in connection with which I have illustrated my invention. A radi 40 ator il is connected to the Water jacket of the engine by suitable connections l2 and i3. .An exhaust pipe i4 leads from the engine in the usual manner. Y A circulating system indicated generally at l5 45 comprises a vapor generator indicated generally at I6 and a radiator il which may be if desired the ordinary hot water radiator that has com monly been used on vehicles. The vapor gen erator is preferably formed with a loop |8 which 50 is located in the exhaust pipe I4, the ends |8| and |82 preferably being threaded as illustrated ' and each provided with a flange lil.Y The bent ends |8| and |82 of the pip-e forming the gen erator pass through openings 2li in the exhaust> 55 pipe as best shown in Fig. 2, a union 2| connect ing one end |8| of the generator to a pipe 22 which passes through a wall 23 of the body of the car and connects to the radiator Il. The re turn of the circulating system comprises the pipe 60 24, leading from the radiator l1 to an enlarge ment 28 in the pipe 25 which connects said er1-y largement to the other end |82 of the generator pipe. A union similar to that above described is Y preferably used to connect the pipe 25 to the end |82 of the generator. Liquid is supplied to the circulating system through a pipe 26 which may be connected at any suitable point to the water cooling system of the motor. In the embodiment illustrated, the pipe 26 is connected at 2l to the -water jacket Which forms a part of the Water circulating system of the motor.k The other end of the pipe commu nicates with the circulating system l5. A check valve 38 is located in the pipe 26. A by-pass indicated generally at 39 is connected to the pipe 26 on opposite sides of said check valve A pipe connection 34 (Fig. 4) is threaded into the casing 3H of the pop valve 3| and the inner end thereof provides a seat for a Valve member 35 which is preferably generally cylin 20 drical in form, but provided at its side with lon gitudinally extending grooves 36. The valve member 35 is normally depressed against the nipple connection 3i by a spring 37 which is de signed to be oompressedwhen a predetermined pressure, for example, ten pounds, has been ex ceeded Within the pipe 25 which forms a part of the circulating system. _ The operation of my heating system and the elements included therein is as follows. Assum 30 ing that the motor of a vehicle with Which my device is connected is not in` operation, water will substantially fill my heating system, the Water ñowing from the Water cooling system of the motor through the pipe 26, check valve 38, enlargement 28 and thence into the circulating pipes, vapor generator and radiator included , in my heating system. Obviously, water cannot entirely lill the heating system due to the fact that no outlet is provi-ded therein for air, hence 40 the air which is trapped therein will prevent the same from becoming entirely iiooded. When the motor is initially started, waste gases or ex haust gases will be conducted from the cylinders 45. of the motor through the exhaust manifold i4 and around the vapor generator i6. 'I‘he gen erator, being preferably formed from a material having the characteristics of resistance to cor rosion from the exhaust gases and high heat conductivity, will transfer the heat from the exhaust gases to the water therein. " ' ' When the motor is started, the pump which circulates liquid through the radiator of the vehicle and the Water jacket surrounding' thel motor is also started thereby creating pressure in the jacket which forces liquid through the pipe connection 2E past the check valve 38 into the circulating system l5 which is then flooded as nearly as may be, the entire flooding ofY the 60 2 2,087,613 circulating system being prevented for reasons that have already been presented. The pressure which is created in the water block is practically instantaneous whereas it requires an appreciable time to bring the generator up to a temperature suliiciently high to cause vaporizatìon of the water therein to take place. When the generator vaporizes the liquid therein, a pressure is created in the circulating system and when it reaches 10 ten pounds, the by-pass valve 3| opens thereby permitting fluid from the circulating system of the heater to be forced through the pipe con nection 26 into the water jacket, since the pres sure therein is below that at which the valve 3l 15 opens. The circulating system is thereby re lieved of the excess amount of liquid therein and of the excess pressure. -As soon as the pressure in the circulating system falls below ten pounds, the by-pass valve 3i is closed. 20 may find its way into the water, forms a seal be tween the valve member 35a and the walls of the casing 3l la. It is to be understood that the control means which I employ will continuously operate while my heating system is in use. Furthermore, the means which I employ to regulate the admission of water to the heating system and the release of steam therefrom maintain the heating sys tem and the water cooling system of the motor as separate systems, the two being entirely op erable in a functional sense independently of eachother. The water cooling system is utilized merely as a source of water supply and as a ycondenser for the excessive steam developed in the heating system. Furthermore, it is to be understood that the heating system is so designed that the excessive steam generated therein and which is exhausted through the water cooling It will be understood that when the vehicle on which the heating system is installed stops, system is negligible as a heating factor of the the exhaust gases no longer pass over the .gen A few of the evident advantages of my in vention reside in the fact that it may be easily and quickly installed, requires a negligible amount of liquid, and may be used with hot water radiators of installed systems. While I have referred to water as the liquid erator, and when the vehicle stops for any ap preciable time, the generator cools and when the car is again started liquid is again forced into the circulating system and the cycle of op eration above described is repeated. The valve 38 is thus used only as an emergency valve for the purpose of relieving the circulating system of excess pressure when the sam-e is ñooded with liquid as nearly as it may be and the water in the generator heated thereby creat ing an excess pressure therein. Under normal operating condition the vehicle may run for an entire trip or for an entire day without the valve motor cooling system. medium employed, I do not limit myself thereto, but may use any fluid which may be suitably used in a motor cooling system and which may be vaporized in a vapor heating system. While I have described my invention in its pre ferred embodiments, it is to be understood that the words which I have used are words of de scription rather than of limitation and that 38 being operated, the valve 3l being operated changes within the purview of the appended only at the time of, starting the vehicle and possibly after the motor has been idling. The system embodying my invention thus pro claims may be made without departing from the true scope and spirit of my invention in its broad vides a single connection only from the water jacket to the circulating system. It will be evident that my heating system comprising only the one pipe connection leading from the water jacket of the circulating system of the vehicle 45 to the circulating system of the heater is simple and inexpensive as compared with a system comprising two such connections and is more ehi-cient as the liquid is not returned to the wa ter jacket under normal operating conditions as is necessarily the case when the circulating system of the vehicle is included as a part of the heating circulating system. Furthermore, the pressure and therefore the temperature is maintained substantially constant under normal operating conditions thus delivering a substan tially constant amount of heat to the vehicle. Furthermore, the system embodying my inven tion is comparatively simple and compact. I have illustrated in Fig. 5 a modiiied form of In the form of valve 60 valve Sla for the by-pass. there illustrated, the valve member 35a is in the form of a plain cylindrical member having a close ñt in the valve casing 3l la. The outlet pipe Sila for the by-pass is connected to a port 30h which is normally covered by the valve mem ber 35a which is biased to the closed position by 392' er aspects. What I claim is: l. In a vapor generating and heating system, a source of liquid supply normally under pres sure during normal operating conditions, an un obstructed closed circulating system in which the liquid circulates independently of said source or” liquid supply and including a vapor genera 45.51 tor and a vapor radiator, means providing a single passage between said source of liquid sup ply and said circulating system, a check valve located in said passage opening toward said circulating system, and a by-pass around said check valve and including a normally closed valve operable to open position in response to a pre determined pressure in said circulating system. 2. In a heating system, a closed circulating 55 system including a vapor generator and a vapor radiator with means providing communication between the two, a source of liquid supply un der a pressure which may be higher than that in said circulating system under certain conditions of operation, means deñning a passage communi cating with said source of, liquid supply and with said system, a check valve located in said pas sage for normally preventingV the return of fluid from said system to said passage, a by-pass around said check valve, a valve located in said by-pass, and yielding means for normally retain- , the spring 3l as in Fig. 4. In moving over the walls or”. the cylinder, any dirt or other foreign matter is automatically removed from the walls ing said Valve closed and operable to an open thereof thereby eliminating the possibility of predetermined pressure in said system. its interfering with the operation of the valve. Furthermore, any grease or oily substance which 2.5 position in response to a pressure in excess of a CLAUDE G. BORDEAUX».