US1992796A

US1992796A - Oil temperature regulating device

Info

Publication number: US1992796A
Application number: US684106A
Authority: US
Inventors: Leon M Young; Witzel Ernst
Original assignee: Young Radiator Co
Current assignee: Young Radiator Co
Priority date: 1933-08-07
Filing date: 1933-08-07
Publication date: 1935-02-26
Anticipated expiration: 1952-02-26

Description

Feb. 26, 1935. 1.. M. YOUNG El AL OIL TEMPERATURE REGULATING DEVICE 3 Sheets-Sheet 1 Filed Aug. 7, 1933 Feb. 26, 1935. L. M. YOUNG ET AL v OIL- TEMPERATURE REGULATING DEVICE Filed Aug. '7, 1935 3 Sheets-Sheet 2 lNlif/YTOES Feb. 26, 1935. L. M. YOUNG ET AL OIL TEMPERATURE REGULATING DEVICE Filed Aug. 7, 1935 5 Sheets-Sheet 3 Patented F eb. 26 1935 1,992,796 OIL TEMPERATURE REGULATING DEVICE Leon M. Young and Ernst Witzel, Racine, Wis., assignors to Young Radiator Company, Racine,

Wis.

Application August '1, 1933, Serial No. 684,106

6 Claims.

Our invention relates to means for cooling the lubricating oil of internal combustion engines, as commonly used on airplanes, automobiles and the like, wherein the engine is subjected to varibus atmospheric temperatures and the oil used cores and provide a valve which is adapted tocause the oil to flow through the cores after the temperature of the oil and cores rises to a predetermined point. I

Our invention is novel and desirable in that it provides preferably thermal means for controlling the flow of the oil, thus to operate satisfactorily under all atmospheric temperatures and conditions, because the primary source of control resides in the temperature of the oil itself. When the temperature of the oil in the unit is very low it will be congealed and, therefore, cannot without excessive pressure, be made to fiow between the tubes of the cores but the thermally controlled valve will then be open and the thickened oil will easily flow through the valve and passageway between the cores. The valve will remain open until the oil temperature has raised to a predetermined point. Before the valve closes the oil will pass through the central chamber and be in direct contact with the inner walls of the core chambers. The cores will, therefore, be warmed sufiiciently before the valve is closed, to cause the oil therein to become liquid. It will then flow freely through the cores and after a sufficient rise in temperature the valve will be closed to thus force all of the oil through the cores and subject it to the cooling effect of the cores by deflection.

One of the objects of our invention is to pro-' vide a simple, eflicient and reliable unit adaptable to any form of power plant and whereby any form of coolant or thermally controlled liquid may be used.

We accomplish these objects and other useful ends in a manner which will hereinafter be set forth and claimed and shown in the accompanying drawings in which:

Figure 1 is a longitudinal sectional view of our preferred form of unit, a fraction of the division wall having been removed to clearly illustrate the position and construction of the core tubes.

Figure 2 is a transverse sectional view taken on line 2 of Figure 1.

Figure .3 is a longitudinal sectional view of a modification.

Figure 4 is a longitudinal sectional view of a further modification.

Figure 5 is a longitudinal sectional view of another modification.

Figure 6 is a longitudinal sectional view of a modification wherein a spring and pressure operated valve is provided.

Thus it will be seen that various valve controlling means may be used on our cooling unit and various changes made in the details of the cores, the partition walls and in the central pre-warming passageway. v

As thus illustrated in Figures 1 and 2, the outer or enclosing housing is preferably cylindrical in form and is designated by the numeral 10. We provide centrally positioned and spaced apart

longitudinal walls

11 and 12, as clearly illustrated in Figure 2. We provide preferably two heat transfer cores which in their entirety are designated by reference characters A and B. These cores may be formed in any suitable manner; we have shown them, however, as made by an assembly of tubes 13, the ends of which have been expanded as at 14 to thereby form the interstices 15 between the tubes for the passage of the oil to be cooled. Air, water or any other coolant may be used by passing it through the tubes in the usual manner.

Thus far we have described .the radiator proper of the unit wherein the two

walls

11 and 12 form a narrow. passageway or chamber 16. This chamber is provided with a transversewall 1'7- ending as at 18, thus to provide an opening between the front and rear portions-of the chamber 16. Near the bottom of the

walls

11 and 12, we provide openings 1919, to thereby form a passageway from the chamber 16 to the bottom of the cores A and B. In the top of the housing 10 we provide openings 20 and 21. An inlet bracket 22 is provided, having a connection to the chamber 16 through opening 23. Thus oil may pass from inlet 22 through the chamber 16 into the bottom of cores A and B through openings 19 and pass from the top of these cores through openings 20 and 21.

In order to lengthen the travel of the oil through the cores, we provide partition walls 24' which are positioned alternately to thereby form a zig zag path for the oil, as illustrated. by dotted line arrows in Figures 1 and 2.

The preferred form of valve mechanism, which in its entirety is designated by the reference character C, is positioned on the top of the housing 10, as illustrated.

The valve housing 31 is suitably made fast to the housing 10 and is provided with a valve seat opening 32 and a valve 33. An opening 34 in the shell forms a passageway from the chamber 16 to the valve. A suitable passageway 35 leads from the valve chamber to outlet 36. This out- .let registers with outlets 20 and 21, as shown in ings 19, from thence, as indicated by dotted line arrows, through the cores to outlet 36 through openings 20 and 21, as already indicated.

We mount the thermal means for controlling the valve 33 in housing 31 as follows: a valve seat carrying sleeve 41 is screw threaded into the housing 31 and is provided witha screw threaded cap 42. The bellows 43 at its top end is attached and sealed to this cap and to the guide 44 at the other end. This guide 44 is suitably formed to engage the valve 33, as indicated. Thus when the bellows expands and contracts, the valve is free to move vertically and engage or disengage the seat 32.

The bellows 43 is of a. well known form and is adapted to be filled with a thermally sensitive gas or liquid and to permit the valve 33 to leave its seat when exposed to a normal temperature of say 50 F. Thus the valve will remain open for temperatures below 50 F. and all of the oil will, therefore, pass directly through chamber 16 only, particularly so if the temperature is low enough to congeal the oil' and prevent its passage through the cores A and B. When the englue is in operation and the oil temperature rises above this predetermined temperature, the ther- .,mally sensitive liquid orgas in the bellows 43 will expand and close the valve, thus to force the oil through the cores. However, the warmed oil in its passage through the chamber 16 will have already warmed the cores and oil therein whereby the oil has become liquid and will, therefore, pass freely through the cores.

Thus it will be seen that the valve will be controlled thermally. However, in order to more .directly and quickly expose the thermal device to the temperature of the oil, we provide restricted by-pass openings as at 45 and 46 whereby a small quantity of oil will pass directly from chamber 16 to outlet chamber 36 through the sleeve 41. Clearly, the oil so passing will impinge the bellows and thereby cause the thermal device to be more sensitive to the circulating oil temperatures.

An excessive risein temperature will be prevented through the cooling eifect of the radiators wherein air or liquid coolant may be used in the usual manner, as already indicated.

It will be'understood that we have named" 50 F. as normal only for the purpose of convenient description. We may, obviously, adapt our device for any desired temperature.

' Referring now to Figure 3, it will be observed that the cooling structure is identical to that shown in Figure 1, except the position of the is in turn rigidly connected to socket 60.

partition wall 50 which is nearer the inlet end of the unit, whereby after a predetermined temparts, which are similar to those shown in Figure 1, are identified by similar numerals. No restricted direct passage for oil is provided, as in Figure 1. provided whereby the heated oilwill influence the thermal device by direct and eddy current contact, as indicated by arrows. The similarity of this construction to Figure 1 is too obvious to require further description.

In Figure 4 we also show a device very similar to that shown in Figure 3. In this figure similar parts to those shown in Figure 1 are identified by similar reference numerals. The

valve housing is represented by numeral 56, the valve seat 5'7 is screw threaded or otherwise mounted in the housing, a cap 58 is screw threaded into the housing as indicated. The thermal device is positioned between this cap 58 and valve 33 and comprises a bellows 59, valve socket'60 and cap 61. This cap 61 is screw threaded into .cap 58 and carries a guide tube 62 which slidably telescopes the tube 63' which The bellows 59 is made fast and sealed to socket 60 and cap 61 to thereby form an enclosure for a thermally sensitive liquid or gas. An opening 64 is provided in the tube 63, and an opening 65 is provided in cap 61, whereby to providemeans for inserting the liquid or gas into the tubes and bellows.

Thus it will be seen that the operation of the valve mechanism shown in Figure 4 will be similar to the operation of the valve mechanism shown in Figure 1. In Figure 1, however, the guide for the free end of the bellows resides in part 44, whereas in Figure 4 the cap 61 supports and guides the valve mechanism through the tubes-62 and 63.

Figure 5 illustrates a modification wherein the valve mechanism is similar to that shown in Figure 4, having a housing and inlet similar to that shown in Figure 3. The valve housing, however, is not provided with the by-pass port 46, as shown in Figure 4, but is provided with a seat or ring 71 which is positioned whereby the pe- However, an enlarged opening 52 is riphery of socket 60 will register therewith when p the valve is closed. Thus when the valve is open, as indicated, a limited quantity of oil will flow from port 72 around the bellows 59 past socket 60,- the diameter of which is slightly housing, as indicated; a valve seat 82 is screw' threaded in the carrier 81, as indicated; valve 33 and valve spring 85 are assembled into the carrier 81 as indicated; the housing 80 is provided with an enlarged chamber 83 and the carrier with openings 84. Thus when the valve 33 is off its seat, the oil will pass through the seat and openings 84 into the chamber 83 and to the outlet 36 which is similar to the outlet 36 shown in the other figures.

The operation of this valve mechanism will be as follows: When the oil is warm it will move through the unit exactly as in Figure 1, because the valve 33 will be held on its seat 82 by means of the spring 85. However, when the oil is congealed and will not readily flow through the cores, the pressure in chamber 16 will rise to a point where the valve will be lifted from its seat. Thus the oil will be shunted through the chamber 16 into outlet 36. The warmed oil passing through the chamber 16 will warm the cores and oil therein and in time the pressure in the chamber 16' will be reduced and the valve seated, after which the operation will be exactly like the operation of the device shown in the other figures when the valve has been closed. by thermal action.

Thus it will be seen that our oil or liquid temperature controlling unit is simple, automatic and efficient, and that many minor changes may be made without departing from the spirit or scope of our invention.

Having thus shown and described our invention, whatwe claim as new and desire to secure by Letters Patent is:

1. An oil cooling device comprising, a housing, a thermally controlled valve, means whereby the thermal device of said valve is exposed to the temperature of the incoming oil, .whereby said valve will be opened whenthe temperature falls below a predetermined point and closed when the temperature rises above a predetermined point, two

cooling tube bundles insaid housing having'a narrow compartment therebetween, means whereby the oil will pass through said compartment when said valve is open and be forced to pass in multiple between the tubes of said bundles when said valve is closed.

2. An'oil cooling device, comprising a thermally controlled valve, a restricted by-pass adapted to permit a limited quantity of oil to contact the thermal device of said valve and cause said valve oil temperature falls below. a

when the oil temto open when the predetermined point and close perature rises above a predetermined point, two

bundles of cooling tubes having a narrow compartment therebetweem-means whereby the oil will pass through said compartment when said valve is open and be forced to pass in multiple between the tubes of said bundles when said valve is closed, 7

3. An oil cooling device comprising, a thermally controlled valve, a restricted by-pas adapted to permit a limited quantity of oil to contact the thermal device of said valve and cause said valve toopen when the oil temperature falls below a predetermined pointand close when the oil temperature rises above a predetermined point, two bundles of cooling tubes having a narrow compartment therebetween, a partition wall in said compartment having an opening, means whereby the oil will pass around said partition and through said compartment when said valve is open and be forced to pass in multiple between the tubes of said bundles when said valve is closed.

4. An oil cooling device, comprising a housing,

a thermally-controlled valve, two tube bundles in said housing having a narrow compartment therebetween, an oil; inlet at one end of said compartment, said valve forming an outlet therefor, the thermal device of which is exposed to the incoming oil temperature, whereby said valve is opened when the oil temperature falls below a predetermined point and is closed when the oil temperature rises above a predetermined point, outlets from said compartment to said tube bundles positioned opposite said inlet, oil outlets for said tube bundles on the opposite side from said oil inlets, whereby the circulating oil may pass through said compartment when said valve is open and is forced to pass between the tubes of said tube bundles when said valve is closed. 5. An oil cooling device, comprising a housing, a by-pass valve having means to be yieldingly held normally closed, two cooling tube bundles in said housing having a narrow compartment therebetween formed by two partition walls, an oil inlet at one end of said compartment, said valve forming an outlet for the other end, a transverse partition wall in said compartment positioned between said inlet and said valve, leaving an opening on the opposite side from said inlet and valve, openings in said partition walls to said ..tube bundles on the opposite side from said inlet,

outlets from the chambers of said bundles, positioned on the opposite side from said openings, whereby oil may flow through said compartment and around said transverse partition wall when said valve is open and is forced to flow between the tubes of said bundles in multiple, when said valve is closed.

6. An oil cooling device, comprising a housing, a by-pass valve having means to be yieldingly held normallyclosed, two cooling tube bundles in said housing having a narrow compartment therebetween, formed by two partition walls, an oil inlet at oneend of said compartment, said valve forming an outlet for the other end, inlet openings in said partition-walls; to said tube bundles on the opposite side from said valve outlets from the chambers of said bundles, positioned adjacent said valve whereby oil may flow through said compartment when said valve is open and is forced to flow between the tubes 01 said bundles in multiple, when said valve is closed.

- LEON M. YOUNG.

ERNST 'WITZEL'.