US2677366A

US2677366A - Gas heater radiant

Info

Publication number: US2677366A
Application number: US46825A
Authority: US
Inventors: De Witt H Wyatt
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-08-30
Filing date: 1948-08-30
Publication date: 1954-05-04
Anticipated expiration: 1971-05-04

Description

y 1954 DE WlTT H. WYATT 2,677,366

GAS HEATER RADIANT Filed Aug. 30. 1948 De Witt If. aft

wqwyw ww Patented May 4, 1954 um TED Pare-NI -.o fierce HEATER- RADIANT De Witt H. Wyatt, Columbus; Ohio Application August 30, 1948,'Se1"'ial No. 46,825

sLGlaim. -1

'Thepresent invention relates to gas heaters'of a type which is positioned on the' fioor of a 'room and connected with the conventional .gas line. The principal object of the invention is to provide such a heater of simple; compact construction and of attractive appearance, andiwhich is highlyefficient in operation.

An important object of the-inventionis to;provide a novel radiant. structure' of sgeneralutility, but which is particularly useful-in the type of heater referred .to. ItisazDurpos'e of theiinv'ention toiprovide such a radiant which will -withstand. relatively, great mechanical. and heat shock abuses. It is alsoa-purpose of the invention to provide such a radiant which is attractive in appearance, presenting a-multitude of alternating glow points which-are-visibiethrough the' transparent front 7 panel" ordoor of Y the heater.

In the drawings, which are illustrative of the several forms of the invention:

Figure l is a perspective view of one of the double radiants of the present invention.

Figure 2 is a vertical sectional view through one side of such a radiant, and

Figure 3 is a horizontal sectional view of the radiant, taken along the line Ill-I of Figure 2.

While various types of radiants might be usefully employed I have found that most outstanding results are achieved when radiants of the particular design as shown in the drawing are employed. These radiants are manufactured from a ceramic material which reduces the factor of expansion to a minimum, thus reducing the amount of fatigue in the material due to expansion and contraction. These radiants are of a double type, separated by an integral vertical front rib 90, although it will be understood that single radiants identical with each half shown could be used.

Because the interior construction of the radiant is somewhat complex, it is initially formed in separate front and back sections, indicated in Figure 1 at 92 and 94. The back section 92 carries the rear wall of the radiant, and the front section 94 carries the front open wall of the radiant, and after they are molded the front and back sections are suitably secured together. The side walls of the radiant are formed partially by each of the front and back sections.

Each radiant is open at its front, except for the spaced horizontal baflling and strengthening members 96, there being four of these members shown in each section of the radiant. The design and spacing of these baffle members is such as to present a maximum brightness for direct radiation of light outwardly and upwardly from the 1 radiants. In cross section, the baiiie members=-are substantiallytriangular and the'ir surfaces are-of are'a a'rid slope wvith z'respe'c-t toon'e another as indicated in Figure 2. Alternating with the bafiles'96, there*-are verysubstantial open spaces 98 in the front wall of -the 'rad-iant. 'i'lihe baffles-96 have rearward surfaces I whichsslope rearwardly andupwardlytowardthe rear wall 'of the radiant, -and -spaeed av sshaped cutiouts 2102 are made in the =rearward faces fofithe barfies, thus providing spaced points lM which carefreferred to as glow points, in that they care iso intimately surrounded i by burning gases -.:as ito reach a heat which causesithemrtothavexaztmore brilliant :ap'pearance E than .the radjacent -.cera1nic material. The upper-Tforward'fac'es HUI 30f .lthe baflle members also sl'ope upwardly :and are-arwardly in converging relationl withitheffaces N0, the respective I faces forniing fa .thin "-topitedge in which the glow points H 04 iare located. lThus, the amass 0f the aglow points i-is melativel'yi small, causing them to glow brightly.

The rear wall H16 of the radiant section 92 is provided with a plurality of spaced longitudinal ribs 108 which are disposed in alternating relationship with respect to the glow points I04 on the inner side of the front wall of the radiant, whereby said points I04 and ribs I08 are presented toward one another in staggered relation. At the points where the ribs I08 pass between the glow points I04, they are provided with forwardly extending circular portions H0 which are more intimately surrounded by hot burning gases to cause them to reach a brilliant incandescence, thus providing rear wall glow points alternately spaced behind and above the glow points I04 on the front wall. With this arrangement, the entire front of the radiant will appear to have a brilliant incandescence, and the direct radiation of heat and light will be intense.

It will be noted from Figure 2 that while the rear wall I06 of the radiant is in a substantially vertical plane, the forward wall slopes slightly toward the rear wall so that the hollow interior of the radiant becomes increasingly smaller in volume as the top of the radiant is approached, whereby there is a proper utilization of the eifect of the burning gases on the glow points referred to, throughout the entire length of the radiant.

With this construction, it will be apparent that the gases are completely consumed, and they are finally discharged through the top of the radiants through their outlet openings H2.

It will be obvious from the above that the relatively heavy bafile members provide a structurally strong front wall, yet alternate openings of height greater than that of the baflle members are provided. The bafiie members, designed and arranged at the angle shown, do not obstruct light radiation to any substantial extent, and the front black out effect common to prior art radiants is not apparent. The rising gases are rolled in a streamline pattern as they rise, rather than following a tortuous path interrupted by casual baflle points which violently disturb the upward flow. The design permits development of a high intensity of heat in the hollow shells of the radiants resulting in maximum combustion temperatures. The opposed walls of the radiants assist in heating one another to a marked degree by direct radiation, and the inclined surfaces I00 of the baffle members act repeatedly to turn the rising gases rearwardly toward the back wall of the radiant, avoiding outward and premature discharge of gas which might not be completely consumed. Each baflie serves to direct the gases inwardly toward the upper parts of the adjacent projection H0 and also toward the lower parts of the rows of projections H0 next above.

The forward extensions H0 and adjacent portions of the ribs I08 are heated to the appearance of glow points and they are presented in staggered relation to the forward wall glow points I04 in the thin top edge of the baffle elements 96.

I claim:

A hollow radiant having substantially closed rear and side walls and an open front wall, said rear wall being in a substantially vertical plane and said front wall being in a plane which tapers upwardly and inwardly toward said rear wall to thereby progressively reduce the volume of the hollow interior of the radiant, said front wall comprising a plurality of spaced triangularly shaped baflie members extending transversely between the side walls of the radiant, said baiiie members being vertically spaced to provide areas of the rear wall being completely exposed when viewed from the front, each of said baflle members having an inner face sloping upwardly toward the rear wall and an upper face sloping upwardly and rearwardly in converging relation with said inner face to provide a thin upper edge, said baflle members having a plurality of spaced substantially vertical cutouts providing glow points of relatively small mass along the thin upper rear edges thereof, said rear wall comprising a plurality of forwardly extending vertically disposed transversely spaced ribs positioned directly behind the cutouts, and each of said ribs including vertically spaced straight portions'connected by curved portions extending outwardly toward the front wall and disposed adjacent the glow points to provide rear wall glow points staggered relative to the front wall glow points.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Re. 16,122 Risinger July 21, 1925 449,757 Foulis Apr. 7, 1891 1,371,477 Grayson Mar. 15, 1921 1,469,509 Grayson Oct. 2, 1923 1,566,601 Hoffman Dec. 22, 1925 1,666,679 Bridge Apr. 17, 1928 1,683,375 Wiederhold Sept. 4, 1928 FOREIGN PATENTS Number Country Date 140,934 Great Britain Apr. 8, 1920 17,392 Australia of 1934 505,990 Great Britain May 19, 1939 111,649 Australia Sept. 25, 1940