US1864800A - Steam generating device - Google Patents

Description

June 28, 1932.

G. H. CHAMBERLAIN, JR

STEAM GENERATING DEVICE Filed March 30, 1928 1 r// Mm.

fli l uuwun 1 gwvmloz 620K636 fi? CHAMBERLAIN-5i Patented June 28, 1932 UNITED STATES, PATENT OFFICE GEORGE H. CHAMBERLAIN, JR, OF ELYBIA, OHIO I STEAM GENERATING DEVICE I 7 Application filed March 30, 1928. Serial No. 266,083.-

municates with the bottom. of the water-containing chamber. Suitable connection is provided at the point 6 for the spiral copper tube 7 which is housed within the fire chamber in side the inner wall 2. The upper end of the 65 tube 7 has connection through the upperend of the inner wall 2 with the steam chamber in the dome portion already referred to.

As will be observed from the drawing, the diameter of the spiral of the tube 7 decreases 00 upwardly while the inclination of the convolutionsof the spiral increases accordingly. The purpose of this feature is to render as uniform as possible the rate oftravel of the water through the tube at all points.

' The burner 8 has connection with the gas supply pipe 9 and is arranged immediately under the bottom end of the spiral tube 7 and surrounds the lower vertical portion of the tube 7, as'clearly indicated in Fig. 2. This 7 burner may be supported in any suitable manner. The taperingfform of the inner Wall 2 tends to converge the heat as it rises and in this way, serves jto compensate for the distance of the upper part of the tube 7 from the burner. As a result, the degree of heating is rendered more nearly uniform at all points of the tube 7. The waste gases from the burner are discharged through the outlet 10. so

The water which passes through the tube 7 is rapidly converted into steam which is discharged through the upper end of the tube 7 and received into the steam chamber under the dome. The baffle 11 is of a substantially circular form and has its under side curved upwardly and outwardly from a central point, as indicated in Fig. 2. so as to deflect the steam as it passes through the upper end 00 of thetube 7. This bafile not only prevents a suddengush of steam through the dome but alsopermits any wet steam or condensation to find its way back into the Water cham- V ber rather than be transmitted out through the steam pipe to the radiators. The bafile This invention relates to an improved steam generating device.

The steam generating systems which are familiarly used in the heating of private residences and other buildings, comprise a boiler and a furnace for raising the temperature of the water contained in the boiler to the degree necessary for the hot water or steam system, the entire body of water being heated as a whole and at one time. As a result, the development of the necessary degree of steam is comparatively slow. Furthermore, this old system occupies a considerable area in the basement or wherever installed and it is comparatively inefficient with regard to the amount of heat required for a given temperature in a given system.

Accordingly, it is the object of the present invention to devise a steam generating device which is not only compact and more attractive in appearance than the old system, but which is at the same time, more eflicient with respect to the speed with which steam may be developed and supplied to the system of radiators; and at the same time, to devise such a system which is designed in such-a manner as to conserve the heat employed for development of the steam.

Other objects will appear from the following description and claims when considered together with the accompanying drawmg. Y I

Fig. 1 is a partial view of a heating system of which my improved steam generating device forms a part; and Fig. 2 isavertical sectional view of the steam generating device itself.

The main body, of my improved device comprises a single casting which has the outer wall 1 and the inner wall 2, the space between these two walls serving as a chamber for the water and the steam which is received in the upper portion thereof. As clearly indicated in the drawing, the outer wall is of substantially cylindrical shape with its top portion formed as a dome, while the inner wall 2 tapers :upwardly and inwardly. The water supply pipe is indicated by reference numeral 3 and is provided with a suitable valve 4 and pipe connection 5 com- 11 may be mounted by means of legs upon the top of the inner wall 2 and may be inserted for installation through the handhole in the top of the dome. This handhole is closed by 1 the cover 12, into which is threaded the pipe reference numeral 14, and the water of con-- densation is returned through the pipe to the water supply. Thus, the circuit is complete, and this device may be operated for a comparatively long time without requiring replenishment of water.

This device is provided also with the water gauge 16, the vacuum and steam gauge 17,

the pop valve 18, the thermostat 19, and the thermostat control motor 20, together with the pilot 21'. I

In actual use, the water chamber is filled to the proper point, as indicated, for instance, in Fig. 2, and the heat then applied for the development of steam. Because of the par ticular structure and arrangement of the comparatively small spiral tube, through which passes a comparatively fine thread of water immediately above the heat, steam is developed at an exceedingly rapid speed.

This is made possible by virtue of the fact' that this comparatively fine thread of water is subjected to the full intensit of the heat, the surface area of the water eing thereby increased to an approximate maximum for exposure to the heat, and this comparatively fine stream of water is moved at a comparativel high rate of speed so that a certain portion of the water is at one instant developed into steam and is at once conveyed as steam to the steam chamber or dome so as to permit a fresh supply of water to be subjected in the same manner to the same degree of heat. In other words, a greatly increased surface area of thelwater is subjected inthe form of a comparatively fine and rapidly moving thread to the full intensity of the heat instead of subjecting a large body ofwater for a comparatively long time to the heat, as is true of the old system.

Furthermore, with the present jacketed arrangement, in which the water chamber surrounds the fire chamber, there is. conserved a-large portion of the. heat which would otherwise be lost.

a It is to be understood thatiwith thei thermostat arrangement here disclosed, the de-' vice may be set for the desired temperature and the automatic control. de 'nded upon in the same manner as already own in other heating systems. i.

Thls device may be supported 1r on thele 22 anda heat-insulating I? gs cover23 is provided about the main bodyo the steam generating device. If so desired,the dome portion may be -formed separately from the main cylindrical fiody' portion, although as here shown,

the entire body portion including the inner and outer. walls throughout the entire height there0f, 1s'- formed as ahsingle casting. Suit- .water-siipply ipe cqnnfiib a ch mlier.

able connections are provided for the several pipes, as indicated in the drawing.

The present device recommends itself be cause of its compact form and consequentl neat appearance and also because of its big degree of efficiency in conserving the heat thereby reducing the waste of heat units, an

also because of the comparatively hi h rate of speed with which the steam may e generated for distribution throughout the radiator system. It is to be understood, furthermore,that this device may be employed not only in connection with radiator s stems for heating residences, etc., but is ca a le ofgeneral application and may be use for the'generation and distribution of steam wherever desired. T

Furthermore, with proper odification, my present device, withthe same general principle and high de cc of efliciency, may be adapted for use in t e development of hot water, instead of steam, for a hot waterheat- 7 2. A steam generating device comprising a water and steam chamber having'spacedinner and outer walls, a re-entrant heating chamber within said inner. wall, an upwardly tapering, spiral fluid-conveying coil said heating chamber, theinclination of the successive convolutions of said spiralprogressively increasing towards theto'p of the coil,

' a water supply pipe having connection to the lower ends of the said chamber and coil and afiording communication between said chamber and coil so as to'su' ply water from the chamber to the coil, said nieation with said chamber through the up--- per end of said so asito deliver steam to saidchamber, chamber having a steam outlet, and fluid-circulating pipe connections be'tween said outlet and said In testimony whereof, reby aflix my signature:"-

. GEORGE H. CHAMBERLAIN, JR.

the bottom 0011 having cornmlle I16

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