|Publication number||US2173059 A|
|Publication date||Sep 12, 1939|
|Filing date||Dec 26, 1935|
|Priority date||Dec 26, 1935|
|Publication number||US 2173059 A, US 2173059A, US-A-2173059, US2173059 A, US2173059A|
|Inventors||Mackintosh William B|
|Original Assignee||Fulton Sylphon Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (1), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Sept. 12, 1939. 'w. B. MACKINTOSH 2,173,059 7 TEMPERATURE REGULATOR Filed Dec. 26, 1955 Patented Sept. 12, 1939 UNITED s'rA'rEs rcrmcnsruac REGULATOR William B. Mackintosh, Anderson, Ind., assignor, by mesne assignments, to The Fulton Sylphon Company, Knoxville, Tenn, a corporation of Delaware Application December as; 1935, Serial No. 56,250
This invention relates to temperature regulators, and more particularly to temperature regulators of the type employed for controlling the circulation of cooling water through the cooling systems of internal combustion engines, especially automobile engines.
It is an object of this invention to provide a temperature regulator of the type characterized which is of simplified and improved construction for controlling the How of cooling, medium through a cooling system of the by-pass type.
Another object of this invention is to provide an improved device of the type characterized wherein the main valve and the by-pass valve may be made ofunitary construction.
Another object of this invention is to provide an improved device of the type characterized which may be inexpensively constructed of simple parts that are easily fabricated.
Another object of this invention is to provide an improved device of the type characterized that forms a self-contained unit which may be readily mounted in and demounted from operative position in the engine cooling system.
Another object of this invention is to provide an improved device of the type characterized which employs a valve. member of tubular construction which by cooperation with the associated passages facilitates the buidlng of the valve member and the maintenance of its movement in a rectilinear path.
Another object of this invention is to provide an improved device of the type characterized which employs a flanged tubular valve member having a closed end which operates as a by-pass valve member while the flange thereon operates as a main valve member.
Other objects will appear as the description of the invention proceeds.
The invention is capable of receiving a variety of mechanical expressionssome of which are illustrated on the accompanying drawing, but it is to be expressly understood that the drawing is for purposes'of illustration only, and is not J to be construed as a definition of the limits '0f the invention, reference being had to the appended claim for that purpose.
Referring in' detail to the drawing, wherein 0 the same reference characters are employed to.
designate corresponding parts in the several figures,
Fig. 1 is an elevation, partly in section, of an embodiment of the present invention;
Fig. 2 is an elevation of a regulator of a somewhat modified construction removed from its associated conduits; and
Fig. 3 is an axial cross section of another embodiment of this invention.
Referring in detail to the drawing, l0 desigmates a conduit member of any suitable size, construction and material and designed to form a part of the cooling system of an internal combustion engine. As illustrated, it takes the form of a casting adapted to be secured to the header of the engine in any suitable way, as by bolts l I extending through apertures in the flange l2 of said casting, and provided with a passage l3 leading to the radiator, so that the regulator to be described may be mounted in suspended relation in the water of the header of the cooling water jacket. It is to be expressly understood, however, that the invention-is not limited to an installation in this particular location, as if preferred the regulator to be described may be installed in any other suitable position in the cooling system. As shown, the casting it! is provided with a by-pas's conduit M, illustrated as formed integrally with the casting iii, the wall of the by-pass conduit extending inwardly and then axially so as to provide a chamber 55 which communicates with the bypass conduit .proper through a port It and which has at its inner extremity an aperture ll axially aligned with said port 56.
The regulator of the present invention is preferably formed as a self-contained unit composed of a combined valve seat and thermostat support, a thermostat mounted thereon, and a combined main and by-pass valve, preferably formed as a single member, suitably attached to the ther mostat. As illustrated, an annular or otherwise suitably shaped plate-like element lB-is designed to be clamped in position between the casting i0 and the engine header and has centrally thereof a valve port It. Mounted on said element I8 is a thermostat support 29, here shown as taking the form of a U-shaped strap which at'its extremities is passed through apertures in the element l8 and suitably retained therein as by staking. upsetting, soldering, or otherwise. As shown in Fig, 1 said strap 28 may be of uniform width throughout, or as indicated in Figs. 2 and 3 said strap may be of reduced width at intermediate portions of the legs'as indicated at 2!.
Attached in any suitable way to the central portion of said strap is a thermostat 22 of any suitable size, character and construction, but here shown as in the form of an expansible and collapsible deeply corrugated tubular metal chamber, charged in anysuitableway with any suitable wall 23 suitably secured to the strap it. The opposite and movable end 26 of said thermostat has attached thereto inany suitable way a stem 25 for transmitting the movements of said movable end wall to the valve member next to be described.
'As'shown in Fig. 3, said stem 25 may be threaded at its outer extremity so that the valve member may be attached thereto by threading thereonto,
- The combined main and by-pass valve member of the present invention is preferably formed as a Ill single piece and, for facility of manufacture, it is preferably formed of sheet metal-drawn to the desired shape. As illustrated said valve member is composed of a tubular portion 26 which has a closed end 2? and an outwardly extending flange 28 at its opposite extremity. While, if preferred, said flange may extend in a plane at right angles to the axis of the stem 25, it is preferably flared outwardly as shown in Fig. 3' so as to lie at anangle to the plane of the element it, whereby it makes a line contact with the edge of said element It at the periphery of the port iii. In the construction shown in Fig. 3 the opposite end 21 of said valve member is bent inwardly so as to provide an interlorly threaded hub 28 which togather with the extremity of the stem 25 completes the closed end of the valve member, but if preferred the valve member may be formed as a cup, with an imperforateclosed end that is soldered or otherwise suitably secured to the end of the valve stem, as apparent from Fig. 2. The tubular portion at of said valve member is provided with one or more apertures 363 to permit the iiiow or liquid through said valve member as hereinafter explained.
Aperture it heretofore referred to is of such size as to have a free sliding fit with the periphery of the tubular portion 2t 01 said valve member, so that said valve member is guided in'its move- ?mentsby its coaction with said aperture ill, and
.said valve member is thereby restrained to rectilinear movement. The valve port it is of somewhat smallersize than the closed end of said valve member. so that when said valve member engages its closed end 21 with the wall of the chamber i containing said port it said port 88 5 is closed.
With the regulator mounted as illustrated in Fig. 1, the flange 28 of the valve member is in engagement with the element id and closes the port I9 when the thermostat i2 is contracted. The fluid medium flowing through the engine jacketflows through-the interiorof tubularvalve portion 26 and through the ports at into the chamber It, from which it flows through the port it into the by-pass it. When the temperature of the cooling medium rises above that temperature at which the regulator is designed to initiate its movement,
the thermostat 22 begins to expand as indicated in dotted lines in Fig. 2, and the flange 28 is moved away from'the-port iii, the closed end 221 of the valve member approaching the port it, and thereby some of the cooling medium is permitted to flow through the port iii and passage it to the radiator while the remainder of the how is through the lay-pass as Just described. Thereby,
.the flow of the cooling medium through the radithermosensltive fluid, that has its stationary end ator is proportioned to the temperature of the cooling medium. If the temperature of the cooling medium continues to rise thermostat 22 continues to expand until the closed end 21 of the valve member engages the wall of the chamber l5 and closes the port 16, at which time flange 28 is in its most remote position from the port it. In this position no cooling medium can flow through the by-pass It, but all of the flow is around the valve member through the port l9 and .through.the passage It to the radiator.
By reason of the construction illustrated and described it will be perceived that the regulator of the present invention is composed of a minimum number of easily fabricated parts. The element l8 may be stamped from sheet metal; the thermostat support 20 may be stamped from sheet metal and bent into shape, and its ends may be secured to the element It by a simple operation; the valve member may be drawn from sheet metal and readily secured to the end of the valve stem which itself may be a simple piece of rod stock threaded or otherwise suitably formed at its ends: and the thermostat may be simply formed from deeply corrugated tubing, with one end integral therewith if preferred, and closed at its other end, or at both ends if preferred, by suitable disks attached to the end folds of the corrugated tubular wall in a manner well understood in the art. Therefore, all of the, parts of the regulator may be simply formed by inexpensive manufacturing operations and the parts assembled at low cost. By use of a single tubular valve member closed at one endand flanged at the other end and cooperating with ports adapted to be respectively closed by said closed end and said flange, a particularly simple and efilcient by-pass valve member has. been provided. At the same time the device is easy to install, and in operation it functions to njicely proportion the flow of cooling medium between the radiator and the lay-pass so as to maintain the desired cooling effect of the cooling medium.
While the embodiments of the invention illustrated on the drawings have been described with considerable particularity, it is to be expressly understood that the invention is not restricted thereto, as the same is capable of receiving a variety of mechanical expressions, some of which will now readily sugest themselves to those skilled in the art, while changes may be made in the details of construction, material, arrangement,
proportion, etc., of parts without departing from v the spirit of this invention. Reference is therefore to be had to the appended claims for a definition of the invention. a
What is claimed is:
In a temperature regulator for controlling the flow of cooling medium through a by-pass type of internal combustion engine cooling system, said system'in'cluding a by-pass port, a valve mechanism adapted to be installed in and removed from the cooling system as a unit, said unit including a member adapted to be installed as a partition across a passage of said cooling system on the up-stream side of the Junction of the by-pass with the main passage of said system. said member being apertured to provide a valve port, a strap-like frame member carried by said first-named member and projecting therefrom, a bellows thermostat having one end secured to said strap-like frame member and its opposite end movable toward and away from said valve port, a valve stem projecting from the movable end of said thermostat through said valveport, and a cup-shaped valve member on the opposite side of said first-named valve member from said thermostat and having the bottom wall of its cup secured to the end of said valve stem and adapted to close said by-pass port, said cup-shaped valve member being apertured and adapted to operate as a bypass valve to close and'open respectively the bypass as said cup-shaped valve member is moved away from and toward said first-named member 10 and said cup-shaped valvememberhavingaflared flange at the open mouth of its cup disposed at an angle to the plane of said partition member and adapted to make line contact with said valve port to open and close respectively said valve port as said sup-shaped valve member is moved away frnm or toward said first-named member, where-
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3946943 *||Jan 24, 1975||Mar 30, 1976||Toyota Jidosha Kogyo Kabushiki Kaisha||Cooling system of an internal combustion engine incorporating a by-pass flow control system|
|International Classification||G05D23/01, G05D23/13|