US 2066279 A
Description (OCR text may contain errors)
I Dec- 29, 1936- s. PRzYB'oRowsKl 21366279 AUTOMOBILE RADIATOR Filed Dec. 24, 1934 Zimnentor Cttorneg Patented Dec. 29, 1936 UNITED STATES PATENT OFFHCE to Fedders Manufacturing Company,
Buffalo, N. Y.
Application December 24, 1934, Serial No. '758,875
This invention relates to automobile radiators, and it has particular reference to a radiator core of'the cellular type, which, while light in weight, is' durable and resistant to shearing and other stresses set up under conditions of use.
In the manufacture of cellular cores for automobile radiators, it has heretofore been customary to' assemble a number of deformed or corrugated strips of metal to provide alternate passages for the flow of water and transverse passages for the flow of air, whereby the cooling liquid for the engine could be cooled by air flowing through the core. The upper and lower, or opposed sides, of such a core, at the open ends of the water passages, have been capped or closed by upper and lower water tanks, so that water u .could circulate from the engine, to one tank, through the core and into the opposite tank, and thence back to the engine. As such structures are Well known, it is deemed unnecessary here to indulge in further description.
The efiiciency of such a core is customarily evaluated in terms of weight of metal employed, and, to the end that the core shall be regarded as eficient by such standard, it is obvious that light or thin sheet stock is indicated. At the same time, however, there has heretofore been a limit to the thinness of the ribbons used in the core assembly, and one factor determining such thinness has been the extent of vibratory forces 01' shocks to which the radiator is subjected in service. In this connection, it may be added that, in recent years, there has been a trend toward more powerful engines, capable of producing higher speeds, and concurrently even more intense shocks to the radiator.
To the end that these increased destructive forces may be met without increasing the weight of the core disproportionately, and to the end that economies in manufacture and suitable efficiencies may be obtained with the use of light weight metal, the present invention contemplates the provision of means included in the radiator assembly, whereby the road shocks may be absorbed and the radiator protected. In providing such invention, it may also be noted that I have determined that such shocks are usually concentrated at the corners of the radiator core, tending to tear the light metal ribbons, and hence, in the present invention, it is proposed to meet such forces at the point of their maximum intensity and application.
A typical embodiment of the invention is illustrated in the accompanying drawing, where- Fig. 1 is an elevation of a radiator core and tank assembly incorporating the principles of the invention;
Fig. 2 is a fragmentary perspective view of an upper corner of a cellula'r core, also showing the 5 invention; and,
Fig. 3`is a section on the line 3-3 of Fig. 2.
As shown in the drawing, the radiator is composed of a fabricated core I and upper and lower tanks I I and I2 respectively. The upper tank 10 is formed with a marginal flange IS which is soldered to the adjacent face of the core III, and the lower tank is provided with a fiange M which is similarly secured to the lower face of the core. The end portions of the fianges 13 and Id are oif- 15 set from the planar face of the core, as indicated by the numerals 15 and IB respectively, to form receiving Shoulders for the means hereinafter described.
The core III, which is Vof typical design, is shown 20 more clearly in Fig. 2,`and it is formed of juxtaposed Sections consisting of water tube and fin ribbons I'I and I8. The water tube ribbons I'I are corrugated to form crests I9 and troughs 2|, and further may contain one or more longitudinal 25 depressions 22. These ribbons are each folded and a fin ribbon IB is enclosed within the confines thereof to provide a section or unit 23. The Sections are disposed in adjacent relation with the crests of one section disposed in the troughs 30 of an adjacent section. The longitudinal depressions 22 of adjacent Sections, by this arrangement, cooperate to form water passages 25, and they are open at the opposite ends or faces of the core for communication with the tanks II and I2. 35
Angle members 26 are provided to reinforce the corners of the core structure. Each member is formed with a Vertical leg 27 having vertical raised surfaces 28 and depressed surfaces 29 which follow the transverse contour of the 40 underlying ribbon I'I. The horizontal leg 3| of the angle member is planar to engage the flat surface of the section extremities, and it is formed with apertures 32 registering with the underlying water passages 25. 45
The angle members, thus located, may be integrated with the core during the core soldering operation, when the front and rear faces of the core are successively immersed in molten solder to close the water ribbon passages and 50 secure the fin and water ribbon elements together. During this operation, the solder by capillary action, will travel between all contacting surfaces of the angle members and ribbon portions covered thereby. On the Vertical leg 55 21, for example, solder will travel along the crests 9 for the width of the covering member ,due to the conforming contour of the raised and depressed surfaces 28 and 29.
In cores of greater depth, such as herein shown, holes 34 may be provided in the Vertical leg 21 adjacent to the corner of the member, to provide means for introducing additional solder to the central portions'of the joint between the horizontal leg 3| and the underlying section, to insure against the possibility of leakage.
Subsequent to the above described operation, the tanks are soldered in position to complete the assembly, wherein the receiving Shoulders |5 and |6 of the tanks are proportioned to'engage the horizontal legs 3| closely, and thus to provide efficient soldered joints therewith. It will be noted that the leg 29 doesrinot extend along' the core for its entire width, but is cut off so that excess weight may be eliminated. In order to take care of the'stress effects, the leg 29 may be from two to five` times the length i of the short leg 3| overlapping the outside water passage Il. 4
It will be understood that the descrlbed structure is exemplary of an application of the invention to one of the numerous known forms of radiators, land that it is lnot limited thereto, except as set forth in the following claims.
I claim: i
1.' Airadiator comprising a core of the cellular type having water tanks secured to opposed ends thereof, one of said 'tanks having Vshouldered offset portions at each extremity spaced from the core, angle members disposed on the corners of the core and each having one leg received in the space between the core and the adjacent shouldered portion of the'tank, and means securing the reinforcing means to the core and tank.
2. In a radiator comprising a core of the cellular type having upper and llower tanks secured thereto, reinforcing means comprising an angle member disposed on a corner of the core and having one leg disposed between the core and tank, the remaining leg of the angle member I`and having, one leg .disposed between the core and tank, the remaining leg'of the angle member beingformed toconform to the transverse profile of the. side wall of the core, said remaining leg being formed with a plurality of holesV ,adjacent the corner of the angle member for the introduction of solder to the underlying core,
and means securing the ,angleim'ember toV 'the core and tank. 4;,In a radiator comprising a core of 'the cellular. type formed with spaced water ipassage openings at opposite ends thereof and upper vand lower tanks secured to said opposite ends Vof the core, reinforcing means comprising angle vmembers disposed on the corners of the core, each angle member having one leg received inthe space between a shouldered portion and the adjacent portion of the tank and being also formed with openings registeringwith the underlying water passage openings, the remaining leg of the angle member being formed to conform to the transverse profile of the side wall of the core including offset formations on its oppositemargins adapted to match the offset margins of the core, and means securing the angle member to the corel and tank.