US2277814A

US2277814A - Automobile heating system

Info

Publication number: US2277814A
Application number: US328464A
Authority: US
Inventors: Earl C Booth
Original assignee: NOBLITT SPARKS IND Inc
Current assignee: NOBLITT SPARKS IND Inc; NOBLITT-SPARKS INDUSTRIES Inc
Priority date: 1940-04-08
Filing date: 1940-04-08
Publication date: 1942-03-31
Anticipated expiration: 1959-03-31

Description

E. C. BOOTH AUTOMOBILE HEATING SYSTEM March 3l, 1942.

Filed April 8, 1940 3 Sheets-Sheet 2 mlm Maw/fm as AUTOMOBILE HEATING SYSTEM Fi1ed April 8, 1940 5 sheets-sheet 3' NVENTOR. 9,91 ('5007'14,

Patented Mar. 31, 1942 2,277,814 AUToMonE HEATING SYSTEM Earl C. Booth, Columbus, Ind., assignor to Noblitt-Sparks Industries, Inc.,

corporation ot Indiana Application April 8, 1940, Serial No. 328,464

8 Claims.

One method being used at the present time for controlling the temperature of the cooling water in internal combustion engines for automobiles involves the use of a temperature-responsive valve which acts to direct the water leaving the engine water jacket either through the usual radiator or through a by-pass which does not include the radiator. In one standard make of automobile embodying this expedient, the temperature-responsive valve is disposed within a housing attached to the water` jacket of the engine, su'ch housing receiving water from the water jacket and being provided with a main outlet nipple connected to the automobile radiator and with an auxiliary outlet nipple connected to the inlet of a water-circulating pump which discharges directly into the water jacket.

My invention relates to the connection of an automobile-body heater in a cooling system of the type described, to control means for regulating the flow of water through the heater, and more particularly to the incorporation of such control means together with suitable connections in a housing which can be substituted for the,

standard housing above described.

In carrying out my invention, I employ a housing designed to be held in place on the water jacket by the same means as is employed in the attachment of the standard housing, and I provide the housing with main and auxiliary outlet nipples substantially the same as those of the standard housing. In addition, the housing is provided with two nipples Vadapted respectively e for connection to the water-supply and waterreturn conduits of an automobile-body heater. The housing is formed interiorlyV to provide a chamber and a transverse passage, the latter interconnecting the auxiliaryoutlet nipple and the nipple connected to the return line from the heater. 'I'he customary temperature-responsive valve is disposed within the housing and operates to direct water received from the water jacket either to the main outlet nipple or to the chamber. A manually controlled valve disposed within the housing is selectively operable to cause water from the chamber to low either into the transverse passage or to the nipple which is connected to the supply line of the heater.

The accompanying drawings illustrate my invention: Fig. 1 is a fragmental side elevation illustrating the arrangement of the housing and the manner in which it is connected to the radiator and to the automobile-body heater; Fig. 2 is a vertical section on an enlarged scale through the housing and the parts directly asso- Columbus, Ind., a

ciated with it showing the thermostatic valve in the position it occupies at low'temperatures and the manually controlled valve arranged to effect the supply of water to the heater; Fig. 3 is a horizontal section on the line 3 3 of Fig. 2; Fig. 4 is a view similar to Fig. 2, but showing the thermostatic valve in the position it'occupies at high temperatures and the manually controlled valve arranged to prevent the supply of water to the heater; Fig. 5 is a vertical section through a housing containing a modified form of manually controlled valve; and Fig. 6 is a vertical section through a device. embodying 'a modified form of thermostatic valve.

In the device illustrated in Figs. 1 to 4, there is mounted on-the water-jacket I0 of the engine and near the front end thereof a housing II the interior of which communicates with fthe waterjacket through an'opening I2 in the upper wall thereof. The housing I I is provided with a main discharge nipple I5 adapted for connection to the automobile radiator I6 by means of a hose Il, and with a second, or auxiliary, outletl nipple I8 connected to the auxiliary inlet opening I3 ofa pump 20, by means of which cooling water is forced into and through the engine water-jacket. The main inlet opening of the pump 20 is connected through a conduit 2| to the lower portion of the radiator I6. Desirably, the parts described are disposed adjacent the front end of the engine, so that a simple elbow 22 will serve to connect the auxiliary-outlet nipple I8 with `the auxiliary inlet I9 of the pump 20.

The construction as so far described is standard. VWithin the housing Il it is customary to dispose a valve controlled by a temperature-responsive element responsive to the temperature of water in the water-jacket I0 and operative to divide water leavingI the water-jacket between the main outlet I5 andthe auxiliary outlet I8. When the engine is cold, this valve operates to direct substantially all the water through-the auxiliary outlet I8, whence the water is returned to the water jacket without passing through the radiator I6. .As the engine warms up, however,

' the temperature-responsive valve operates to direct some lof the water through the main outlet I5, whence it is returned to the water jacket through the radiator. By controlling the division of Water between the radiator and the by- `pass, the temperature-responsive valve functions to maintain substantially constant the tempera.- ture of the water in the water-jacket I0.

In practicing my invention; the housing II is providedexteriorly with nipples 30 and 3| and interiorly with partitions dening a transverse passage 32 and a chamber 33, one of such partiwith

alined openings

38 and 39 through whichl the passage 32 and the nipple 3l respectively communicate ,with the chamber 33. A valve member 40 is movably mounted between the

openings

38 and 39 so that either opening may be closed.

The nipple 3| on the housing Il is adapted for connection to a supply conduit for a heater' lliA mounted within the automobile body, as indicated in Fig. l; while the nipple-3|l is adapted for connection to the conduit through which water from the heater 45 is returned.

The passage 32 and the chamber 33, as will be evident from Fig. 3, occupy less than the entire width of the housing II so that there remain at the sides ofthe passage and chamber passages I1 through which the lower portion of the housing Il communicates with the main outlet i5. Within the lower portion of the housing there is disposed valve mechanism controlled by a temperature-responsive element and operative to control the supply of water from the waterjacket to ther main outlet l5 or to the chamber 33. If the valve member 40 is in the upper position where it closes the opening between the passage 32 and chamber 33, water supplied to the chamber 33 will pass through the opening 39 and the nipple 3l to the heater, returning by Way of the nipple 30, passage 32, nipple I8, and elbow 22 to the pump 20. If the valve 40 is in its lower position, in which it closes the opening 39, water supplied to the chamber 33 will flow through the opening 38 into the passage 32 and be returned to the pump. When the water tem` perature reaches the value which is to be maintained, the temperature responsive valve operates to permit some of the water emerging from the water-jacket to iiow through the passages 61 to the main outlet l5, whence it will return to the pump through the radiator I6, being cooled on the way.

One form of temperature-responsive valve suitable for use in practicing my invention is illustrated in Figs. 2 to 5 and comprises an inverted' cup-shaped member 50 provided at its lower end with an outwardly turned ange 5| adapted to be received between the lower end of the housing l i and the top of the water-jacket i0 to hold" the lvalve in place. The cup-shaped member 50 is provided in its side wall with laterally directed discharge openings 52 which communicate with the interior of the housing Below the openings 52 the member 50 is provided with aV horizontal partition having a central opening the edges of which are turned downwardly to form a frusto-conical valve seat 53. Across the bottom end of the member 50 there extends a stirrup 51| to which is secured the lower end of a temperature-responsive sylphon bellows 55. secured to the upper end of the bellows 55 extends upwardly through the valve seat 53 and bears at its upper end an inverted cup-shaped valve member 51 having its edge turned out-Y wardly to form a flange complementary to the valve seat 53. 'Ihe valve member 51 is received A rod 55 and is slldable in acentralripeningl provided in'l the upper end of the member 50 and, in its end wall, has openings aording communication between the interior of the member 50 and the chamber 33.

When the temperature of water in the waterjacket I0 is relatively low, the bellows 55 is collapsed as shown in Fig. 2, and the valve member 51 is in engagement with the valve seat 53 to prevent the escape of water otherwise than into the chamber 33 through the holes in the upper end of the valve member 51. As the temperature of the water within the water-jacket I0 increases, the bellows 55 expands and lifts the valve member 51 from the valve seat 53, thus permitting some of the water from the water-jacket to escape through the lateral openings 52 into the interior of the housing ii and thence through the nipple I5 and conduit i1 to the radiator.

I iind it advantageous, in order to prevent overheating of the engine, to prevent or at least materially reduce the flow of Water through the heater or through the by-pass |8-22 should the temperature of water within the water-jacket exceed a predetermined maximum. To this end, I provide means which, under conditions of extreme high temperature, will close the openings in the upper end of the valve member 51 and thus prevent the escape of water into the chamber 33. In the arrangement illustrated in Figs. 2 to 5, the upper end of the cup-shaped member 50 is formed with an upwardly projecting neck somewhat smaller in diameter than the open lower end of the chamber 33; .,nd in the annular space thus provided I dispose a ring or collar 60 which closes such annular space to prevent the escape of water from the chamber 33 and which carries a diametrically extending yoke 6| overlying the upper end of the valve member 51 and wide enough to close the openings in the upper end of the valve member. When the temperature of water in the water-jacket is low, the upper end of the valve member 51 4is spaced downwardly from the yoke 6|, so that water can freely escape from the openings in the upper end of the valve member into the chamber 33. When, however, the temperature of the water in the water-jacket i0 exceeds a predetermined maximum, the valve member 51 engages the yoke El, as shown in Fig. 4, to shut off the flow of water into the chamber 33. Desirably, in order not to prevent all flow through the heater 45 when it is connected to the water-circulating system of the engine, the yoke 6| is provided centrally with a small bleed opening 62 through which a small quantity of water can escape into the chamber 33 even when the valve member 51 is in engage.

struction shown in Figs. 2 to 4 inclusive is desirably a body of rubber or similar resilient material having an annular ange or "other central portion large enough in diameter to close the openings which afford communication between the chamber 33 and the passage 32 and nipple 3| respectively. In order to provide for insertion of the` valve member, the upper wall of the housing is provided in line with the openings just referred to with a screw-threaded opening for the reception of a plug 55, and the lower wall of the passage 32 is provided with a screwthreaded opening for the reception of a valve seat 66. The opening in the bottom wall of the passage 32`is large enough to pass the valve member 40 while the opening in the upper wall of the '-Ihe valve 40 is arranged to be moved vertically between its respective controlling positions. The

control means illustrated in the drawings takes the form of a Bowden wire 88 which is secured at one end to the valve member 88 and whichl extends upwardly therefrom through a stuiling box 69 in the plug 85, and thence to a control member 'I8 accessible for operation by the driver of the automobile.

When operating the device illustrated in Figs. 1 to 4` inclusive, the iiow oi' cooling' water will depend upon the respective positions of the manually controlled valve and-thermostatically-controlled valve 51. When the temperature of thewater in the water-jacket I8 is below that desired at normal operating conditions, the valve 51'wi1l be seated on the valve seat 53 to prevent water from escaping through the openings 52 into the interior ofthe housing II and thence through the discharge nipple I to the radiator. As a result, all water leaving the waterjacket will iiow through the openings in the endof the valve member 51 into the chamber 38. If the manually controlled valve member 80 is Y3 oi' the

ports

18 and 11. Between the plane of the ports 8 2 and 88 and the plane of the ports 88 and 85, the valve member '15 is divided interlorly by a horizontal partition 88.` ,1

For controlling the valve member 88, it may be provided with an axial shaft 88 which extends upwardly through a stuillng box 88 in the hpusing II. A crank 8l secured to the upper end of the shaft 88 is connected to one end of aABowdenwire control device 81 by means of which thev valve 80 may be rotated about its axis.

. In the position illustrated in Fig. 5, the valve 88 operates to direct water through the heater connected to the nipples 88 and 8|, the port 82 being in alinement with the port 18, the ports 88 in its upper position as illustrated in Fig. 2, I

direct communication between the chamber 33 and passage 32 will be prevented, and the water will ilow from the chamber 33 to the nipple 3l and thence to the heater, returning through the nipple 30, passage 32, and elbow 22 to the pump 20. If the manually controlled valve 88 is in its lower position, as illustrated in Fig. 4, and if the thermostatically controlled valve is still closed, water entering the chamber 33 will pass into the passage 32 and will be returned directly to the pump 20 without passing through the heater. As the temperature of the water within the waterjacket I0 increases the bellows 55 will expand to raise the valve member 51 from the seat 53 andy described will enter the chamber 33 through the openings in the ends of the valve member 51 and will escape from the chamber 33 yeither through the heater 85 or directly into the passage 32, depending upon the position of the manually controlled valve member 48.

The device illustrated in Fig. 5 employs a different type of manually controlled valve, but is otherwise substantially the same as that shown in Figs. 2 to 4. xThe housing II is formed interiorly with a valve chamber 15, desirably coaxial with'v the thermostatically controlled valve 51. Near its upper end, the valve chamber 15 is provided with diametrically opposite ports 'I6 and 11 communicating respectively with the nipples 38 and I8; and near its lower end, the valve chamber is provided with a similar pair of diametrically opposite ports 18 and I8 communieating respectively with the nipples 3l and I8.

The lower end of the valve chamber 15 is open 83 spaced at 90 from each other. In its upper end, the valve member-'83 is provided with diametrically opposite ports 84 and 85 in the plane @nd 85 being respectively 'alined with the

ports

18 and 11, and. the-port 18 being closed. As a result, water discharged into the chamber 33 will enter the interior of the valve member 88 below the partition 88, and will escape through the port 18 and the nipple 3| to the heater, from which it .will be returned by way of the nipple 30, ports "I6, 88, 85, 11, nipple I8, andelbow 22 to pump. If the valve 88 is rotated 90 from the position illustrated in Fig. 5, the

ports

18, 11, and 18 will all be closed, and the port 83 in the valve member will be brought into alinement with the port 19. With the valve so adjusted, water entering it from the chamber 33 will escape by way of the ports 83 and 'I8 directly into the auxiliary outlet nipple I8. i

In the arrangement shown in Fig. 5, the thermostatic valve operates as before to direct all.

water leaving the water-jacket into the chamber 33 .until that water has reached a predeter- I ing a different iorm of thermostatic valve 92 which, when cold, discharges laterally through ports 92 and, when hot, through an upwardly directed, central opening 88. Whensuch 'avalve is to be employed, the chamber 33 is made in annular form so that the ports 82' will discharge into it, and the interior of the housing II is so arranged that water emerging from the opening 93 will ilow to the main outlet nipple I5.

The arrangement of the manually controlled I valve means illustrated in Fig. 6 is somewhat diilerent from that illustrated in any of the other modications so far described. In Fig. 6 the chamber 33 communicates with the passage 32 through an upwardly directed opening 9|, and the passage 32 is formed with a vertical stretch 'in which there is disposed a valve seat 55 alined with the opening 84. The valve member 48 is disposed between the opening 98 and the valve seat 95, and is vertically movable under the control of the Bowden wire 68, as in the construction illustrated in Figs. 2 and 4.

When the valve 40 in Fig. 6 is in its lowermost position closing the opening 84, escape of water from the chamber 33 into the passage 32 is prevented, and water emerging from the ports 92' of the thermostatc valve ows through the chamber 33 to the nipple 3l and thence through the heater, being returned through the nipple 30 and passage 32 to thev elbow 22. When it is Y and water \exnergng through the charging into said water-jacket and having a main inlet connected tol saldradiator, said pump also having an auxiliary inlet, saidl water-jacket' "having an upwardly directed outlet opening, a hollow casing disposed over said outlet opening, said casing being provided exteriorly with a main outlet nipple connected to said radiator, with an auxiliary outlet nipple connected to the auxiliary inlet of said pump, ples, an automobile body heater of the circulating iiuid type having -supply and return conduits connected respectively to said two additional nipples, said casing being provided interiorly with a chamber and with a transverse passage connecting said auxiliary outlet nipple with that one of said additional nipples which is associated with the return conduit of said heater, temperature-responsive valve means disposed within said casing and responsive to the temperature of water in said water jacket to divide between said chamber and said main outlet nipple water entering the casing from the water jacket, and valve means within said casing and selectively operable under manual control to cause water from said chamber to flow either into said transverse passage or into that one of said additional nipples which is associated with the supply conduit of said heater.

2. In combination with the engine water-jacket end radiator of an automobile, a pump discharging into said water-jacket and having a main inlet connected to said radiator, said pump also having an auxiliary inlet, said water-jacket having an upwardly directed outlet opening, a hollow casing disposed over said outlet opening, an automobile-body heater of the circulating iluid type, said casing being provided exterior-ly f with two outlet nipples connected respectively with said heater and said radiator, a return conduit connecting sai'd heater with the auxiliary inlet of said pump and including a portion disposed within said casing, said casing being provided interiorly with a chamber, temperatureresponsive `valve means responsive to the temperature of water in the water-jacket for dividing between said chamber and said radiator water entering the casing from the water jacket, and manually controlled valve means within said casing and selectively operable to cause water from said chamber to `flow either to said heater or to said return conduit.

3. In combination with the engine Water-jacket and radiator of an automobile, a pump discharging into said water-jacket and having a main inlet connected to said radiator, said pump also having an auxiliary inlet, said Water-jacket having an upwardly directed outlet opening, a hollow casing disposed over said -outlet opening, an automobile-body heater of the circulating iluid type, said casing having main and auxiliary outlets connected respectively to said radiator and to the auxiliary inlet of said pump, supply and return conduits interconnecting said casing and heater, said casing being provided interiorly with a chamber, temperature-responsive valve means responsive to the temperature of water in the water-jacket for dividing between said the thermostatic valve will flow chamber and said radiator water entering the casing from the water jacket, and manually controlled valve means within said casing and selecand with two additional niptively operable to cause water from said chamber to ilow either` to said heater or to said auxiliarv pump-inlet. l

4. Means for controlling the supplyof water from the water-jacket of an Yinternal combustion engine to an automobile body heater of Vthe circulatirig uid type, comprising a hollow casing adapted to receive watery from the engine waterjacket and being provided interiorly with a chamber, said chamber having -an inlet opening for the admission of water received by said casing from the engine water-jacket, temperature-responsivevalve means responsive to the temperature of water entering said casing for restrictlng water-now into said chamber through the inlet opening .thereof when the temperature of such water exceeds a predetermined maximum,

said chamber being adapted for connection to, the heater, and manually operable valve meansY associated with said chamber for controlling the flow from said chamberto said heater of water passed by said temperature-responsive valvemeans. Y

y 5. In combination with the engine water-jacket and radiator of an automobile, an automobilebody heater bf the circulating fluid type, a hollow said casing for opening said normally closed valve l casing adapted to receive water from said water jacket, conduits for conveying water from said casing to said radiator and heater respectively, conduits forreturning water from said radiator and heater, a normally closed valve for controlling the flow of water from said casing to said radiator, a normally open valve for controlling the now of water to said heater, and means responsive to the temperature of water entering when such water is at or above a predetermined temperature and for at least partially closing said normally open valve when the temperature of s'uch water reaches a predetermined maximum.

6. In combination with the engine water-Jacket and radiator of an automobile, an automobilebody heater of the circulating fluid type. a hollow casing adapted to receive water from said water jacket, conduits for conveying Water from said casing to said radiator and heater respectively, conduits for returning water from said radiator and heater, a normally closed valve for controlling the flow of water from said casing to said radiator, a normally open valve for controlling the flow of water to `said heater, and a single temperature-responsive element operatively connected to both said valves and responsive to the temperature of water entering said casing for opening said normally closed`valve when such water is at or above a predetermined temperature and for at least partially closing said normally open valve when the temperature of such water 4 reaches a predetermined maximum.

'1. In combination with the water-jacket of an automobile engine, said water-jacket having an inlet and an outlet, a cooling radiator, an automobile-body heater of the circulating uid type, conduits connecting ysaid radiator and heater in parallel between the outlet and inlet of said water-jacket, a normally closed valve for controlling iiow of water through said radiator, a normally open valve for controlling ow of water through said heater, and means responsive to the temperature of water passing through said water-jacket outlet for opening said normally closed valve when such water is at or abovea cated adjacent the inlet ends of the conduits with v which they are respectively associated. .v

8. In combination with thefwater-jacket of an automobile engine, said water-jacket having an inlet and an outlet, a cooling radiator,.an auto- Y mobile-.body heater of the circulating uid type,

conduits connecting said radiator and heater in parallel between the outlet and inlet of said waterjacket, a normally open valve for controlling ilow of Water through said heater, and means responsive,V to the temperature of water passing through said water-jacket outlet'l for vat least partially closingsad valve when the temperature of such water reaches a.- predetermined maximum, said valve being located adjacent the inlet end-of the conduit with which it is associated.

EARL C. BOOTH.