US2191050A - Cooling device - Google Patents

Description

Feb. 20, 194m. 5. 'r. TRICE 9 COOLING DEVICE Filed Sept. 22, 1938 s Sheets-Sheet 1 ,06/766!" Trice,

Feb. 29, 1940, s m I 2,191,,Q50

COOLING DEVICE 'Filed Sept. 22, 1938 3 Sheets-Sheet 2 Feb, 20, 1940. 5 T TRlCE 2,191,050

COOLING DEVICE Filed Sept. 22, 1938 3 Sheets-Sheet 3 Spence/d7? T7" /'0 e,

Patented Feb. 20, 1940 UNITED STATES PATENT OFFICE Claims.

machine parts by radiating the excess heat generated therein.

More particularly, the present invention con- 5 templates the employment of a plate of aluminum alloy or other metal of high heat conductivity between the parts of a machine which are bolted together and where overheating is apt to occur,

the plate having openings for passage of the bolts 0 which secure the machine parts together, and

being provided with edge portions which project outwardly of said machine parts for contact by the surrounding or passing air so that rapid radiation of said surplus heat is insured.

An important object of the present invention is to provide a cooling device of the above kind which is extremely simple in construction and highly eflicient in use.

In order that my invention may be fully under stood, I have illustrated in the accompanying drawings two embodiments and uses of the present invention, although the invention is adaptable to use in connection with any portion of a machine or engine where two parts are bolted to gether and overheating is apt to occur.

In said accompanying drawings:

Figure 1 is a fragmentary view of an internal combustion engine showing a cylinder block and cylinder head in section parallel to the cylinder axis and with a form of my invention applied thereto.

Figure 2 is a plan view of the form of the invention employed in Figure 1, partly broken away.

Figure 3 is a view similar to Figure 1 showing 5 a slight modification of the invention as disclosed in the latter figure.

Figure 4 is an enlarged fragmentary section illustrating details of the construction shown in Figure 3.

Figure 5 is fragmentary side elevational view of a machine or engine bearing equipped with another form of the present invention.

Figure 6 is a bottom plan view of the construction shown in Figure 5, and

Figure 7 is a bottom plan view of the cooling device per se for use as shown in Figures 5 and 6.

Figure 8 is a view similar to Figure 5, showing a Figure 9 is a bottom plan view of the constructionshown in Figure 8.

Figure 10 is an edge elevation looking toward the left of Figure8, and

Figure 11 is aplan view of the blank from which the cooling deviceof Figure 8 is formed.

(01. 123-173) This invention relates to a device for cooling Referring more in detail to the drawings, the embodiment of Figures 1 and 2 is employed between the cylinder block and cylinder head of an internal combustion engine. The cylinder block ID has one or more cylinder bores l2, fuel mixture 5 inlet and exhaust passages, one of which is shown at M, controlled by a valve l5, and the usual internal passages I6 for circulation of cooling liquid. Piston ll reciprocates' in the cylinder bore l2, and the cylinder head I8 is hollow as indilo cated at Him the circulation of cooling liquid, the block 10 and head l8 having registered openings as at'2fl andZl for the passage of the cooling fluid from one to the other. Also, the head I8 is fastened to the block In by the usual nut and bolt means generally indicated at 22. It will be noted that the block HI and head l8 are made of cast iron, a material of relatively low heat conductivity.

In order to radiate the excess heat generated 20 in the engine, particularly at and around the exhaust port, combustion chamber and upper part of the cylinder block, I provide the cooling device clearly shown in Figure 2 adapted to be clamped between the block l0 and head I8 as shown in Fig- 25 ure 1. This device consists of a plate of aluminum alloy or other metal of high heat conductivity having openings 24 formed therein conforming to the upper ends of the cylinders and the combustion chambers of the engine, defining portions 25 between such openings where the head and block are bolted together. These connecting portions 25 have apertures 26 through which the bolts 22 may pass, and the plate has side portions 2'! and end portions 28 adapted to also be clamped between the adjacent portions of the head and block of the engine and provided with similar openings 26 for reception of other of the bolts 22 which fasten the head to the block.. Also, the portions 21 and 28 have further openings 29 cor- 40 responding to the openings at 20 and 2| so as to allow or not interfere with the free circulation of the coolingfiuid between the engine block and the cylinder head. It will be noted that the side and end portions 21 and-28 of the plate are of 45 sufficient width to project outwardlybeyond the sides and'ends of the cylinder block and cylinder head for contact by the surrounding or passing air so as to insure rapid dissipation of the heat conducted outwardly thereby. The dissipation of .50

the heat -in thisjrnanner may be made, more rapid I by providinglthe projecting l Ortions withiopene ings as at 30whch,, as shown, arefin} thenaturef of slots" defining outwardly projectingrfingers j3lf therebetweenf 66 In the embodiment of Figures 1 and 2 the plate of high heat conductivity is made comparatively thin and disposed upon an ordinary cylinder head gasket 32 which allows for slight expansion of the cooling plate in the direction of its thickness, and insures a fluid-tight joint between the head and the block at all times.

The dissipation of heat from the cooling plate as it is conducted outwardly thereby may be greatly facilitated by the use of a hollow spherical heat dissipating element 33 as shown. This element merely consists of a ball of aluminum alloy or other metal of high heat conductivity slotted from one end to the other as at 34 to provide a series of arcuate spaced strip members 35 in contact with which passing air may flow and between which air may pass to the interior of the device for maximum heat dissipating action. This ball-like device is attached to the coolin plate near the end thereof employed at the front of the engine in proximity to the usual fan which draws air through the cooling radiator of the motor vehicle in connection with which the engine is employed. Thus, the dissipating device 33 is in the direct path of and adjacent the draught of air immediately after its delivery rearwardly by the fan in question. The cooling plate preferably has a projecting portion 36 at one side and near the front end of the same to which one of the strip members 35 may be attached by welding or the like.

The embodiment shown in Figures 3 and 4 is exactly the same as that shown in Figures 1 and 2 and described above except that the cooling plate is made of thicker and softer material so that it may be employed between the cylinder head and the cylinder block without the use of a separate cylinder head gasket. However, a plate of this character has greater expansion underheat in the direction of its thickness, and means must be provided to allow for such. expansion so that the joint between the cylinder block and cylinder head will not be disturbed. For this purpose, I provide suitable resilient washers or gaskets 40 between the cylinder head J8 and is provided which has its edge turned over upon a top plate of harder material, and a resilient sheet of asbestos or the like interposed between the two sheets as clearly shown in Figure 4. This description is given simply for sake of clearness, the washers or'gaskets 40 forming no specific part of the present invention per se. Asthe constructionof Figures 1 and 2 and Figures 3 and 4 are identical in all other respects, like parts are indicated by corresponding reference characters in all of these views.

In Figures 5 to 11 inclusive, I have illustrated embodiments of my invention adapted for use in connection with machine or engine bearings to radiate and dissipate the excess heat generated therein. The bearing shown consists of a hearing block and a bearing cap 46 bolted thereto as at 41, the block 45 and cap 46 having mating bearing recesses in which the journal of shaft 48 isrotatably fitted and held. The present cooling device for use in this connection consists of a metal sheet or plate of aluminum alloy or other metal of high heat conductivity having side portions 21a and end portions 28a of suificient width to project outwardly beyond the bearing mem bers 45 and 46 for contact by the surrounding or passing air so that rapid dissipation of heat radiated outwardly thereby is insured. These projecting portions have apertures or openings portions thereof project as described. In these embodiments, the end members 280 of the cooling plates are disposed beyond the sides of the bearing and are of curved formso as to passaround the shaft 48 without contacting the latter. This permits stamping of the cooling plate from a single piece of metal in one part, the central opening 24a in the plate beingof a size corresponding to the size of the recesses in the bearing parts which receive the journal of shaft '48. It will be obvious that excess heat generated within this hearing will be radiated outwardly and dissipated from the projecting portions of the cooling plate in an efiicient manner. Other variations and modifications of the invention will suggest themselves readily to those skilled in the art, such as required for cooling the bolted joints between engine exhaust manifolds and exhaust pipes, oil 'pan joints, etc. In the embodiment of Figures 5 to 7 inclusive, the end portions 28a are simply pressed downwardly or upwardly in arcuate form, but in that of Figures 8 to 11 inclusive, they are stamped in arcuate form and bent at right angles to the remainder of the plate. It is noted that the present invention is not required or intended for use on aeroplane motors.

What I claim as new is:

1. In combination with the portion of a machine where overheating is apt to occur and which embodies two parts bolted together and having an inner zone of heat generation, means for radiating and dissipating such heat comprising a plate of metal of high heat conductivity apertured to surround said zone and having its inner edge portions clamped between said parts and provided with openings through which the bolts securing the parts together pass, the outer edge portions'of said plate'projecting outwardly beyond said parts for contact by the surrounding or passing air, and said projecting outer edge portions having openings toafiord additional length of exposed edge and thereby increase the heat dissipating capacity thereof.

2. In combination with the portion of a machine where overheating is apt to occur and which embodies two parts bolted together and having an inner zone of heat generation, means for radiating and dissipating such heat comprising a plate of metal of high heat conductivity apertured to surround said zone and having, its inner edge portions clamped between said parts and provided with openings through which the,

bolts securing the parts together pass, the outer edge portions of said plate projecting outwardly length of exposed edge and thereby increase the 1 heat dissipating capacitythereof, and a hollow sphere of metal of high heat conductivity attached at one side to a side of said plate and provided with arcuate slots from one write the 3. In combination with an engine cylinder block and cylinder head secured together by bolts, means for dissipating excess heat generated at and around the upper part of the cylinder block comprising a plate of metal of high heat conductivity apertured to surround the zones of heat generation and having inner portions clamped between said block and said head as well as apertured to permit passage of the bolts therethrough which secure the head to the block, the outer edge portions of said plate projecting outwardly beyond the cylinder block and cylinder head and provided with openings to afiord additional length of exposed edges and thereby increase the heat dissipating capacity of said edge portions.

4. In combination with an engine cylinder block and cylinder head secured together by bolts, means for dissipating excess heat generated at and around the upper part of the cylinder block comprising a plate of metal of high heat conductivity apertured to surround the zones of heat generation and having inner portions clamped between said block and said head as well as apertured to permit passage of the bolts therethrough which secure the head to the block,

the outer edge portions of said plate projecting outwardly beyond the cylinder block and cylinder head and provided with openings in the form of slots defining projecting fingers therebetween to afford additional length of exposed edges and thereby increase the heat dissipating capacity of said edge portions.

5. In combination with an engine cylinder block and cylinder head secured together by bolts, means for dissipating excess heat generated at and around the upper part of the cylinder block comprising a plate of metal of high heat conductivity apertured to surround the zones of heat generation and having inner portions clamped between said block and said head as well as apertured to permit passage of the bolts therethrough which secure the head to the block, the outer edge portions of said plate projecting outwardly beyond the cylinder block and cylinder head and provided with openings to afford additional length of exposed edges and thereby increase the heat dissipating capacity of said edge portions, and a hollow sphere of metal of high heat conductivity attached at one side to a side of said plate employed at the front of the cylinder block and head, said sphere being provided with openings to facilitate the flow of air into and through the same.

SPENCER TALLEY TRICE.

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