J.. R. HOLlV|ES,`Ja.
GAS BURNER HEATER. .APPLICATION FILED fis. 2a. |916.
Panned Nov. 28,1916.
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UNIE FAN l JOI-IN R. HOLMES, JR., OF PASADENA, CALIFORNIA.
Application le February 2S, 1916.
To all whom t may concern:
Be it known that I, JOHN R. HOLMES, Jr., a citizen ofthe United States, residing at Pasadena, in the county of Los Angeles and State of California, have invented new and useful Improvements in Gas-Burning Heaters, of which the following is a specification.
My invention relates to a gas burning heater.
It is an object of this invention to construct a gas burning floor heater which is arranged below the floor of a room to be heated and which is economical in gas consumption with a maximum of heating vCapacity. The same is constructed with .a large radiating surface, whereby the maximum quantity of heat for heating the room is abstracted from the hot gases before they pass out into the waste gas flue.
Another object of this invention is to construct a heater having provisions for the positive circulation of the air to be heated, so that a large volume of air will flow in contact with the heating surface thereof, thereby insuring a rapid heating of `the room. For this purpose I provide a vertical burner chamber which communicates at the top with a plurality of radiator sections having the shape of annular chambers, the last radiator section being provided with a vent pipe for conducting the waste gases to the atmosphere. A regulatable air supply valve for the burner is provided whereby the air for combustion may be easily controlled. The burner section chamber has preferably a layer of tire clay balls for retaining and equalizing the heat.
With the above and other objects in view, my invention consists in the construction, arrangement and combination of parts hereinafter described and claimed.
In the accompanying drawings forming a part of this specification, I have illustrated a convenient and practical embodiment of my invention, and in which:
Figure 1 is a side elevation partly in section of my floor heater. Fig. 2 is a top plan view thereof with part of the register being broken away. Fig. 3 is an enlarged detail view on line 3-3, Fig. 1. Fig. t is an enlarged vertical section of the top of the burner chamber.
In the drawings, 10 represents a box shaped metal casing rectangular in cross section and open at the top which is ar- Speccaton of letters Patent.
Patented Nov. 23, 1216..
serial no. 80,936.
ranged below the floor of the room to be heated. The register plate 11 which forms a cover forsaid casing is flush with 'the floor of the room. @ne of the side walls of said casing 10 is provided near its lower end with an aperture 12 which may be connected with a suitable conduit outside the house for supplying air to the heater. rlhe heater proper yconsists of a burner chamber 13 and a plurality of radiator sections 14. I have shown three radiator sections, but it will be understood that the number may be varied, the consideration determining the number of radiator sections will be whether the cost of the additional radiator sections will be compensated for by the additional number of heat units abstracted from the hot gases before they pass out into the waste flue.
The burner and the radiator sections are cylindrical in shape and of the same height and diameter. They are suitably mounted in spaced relation to the casing 10, there boing a horizontal air chamber 15 extend ing between the bottom of the casing 10 and the lower ends of the burner and radiator sections. The burner chamber consists of a cylindrical casing 16 which is open at the bottom and closed at the top, a small circular removable mica window 17 being centrally provided at the top for observing the burning within said chamber. A. radially slotted air valve 18 comprising a stationary member 19 and a rotatable member 20 is mounted transversely across the bottom of the burner chamber 13. rIhe rotatable member 2O is adjusted when the heater is installed to furnish the proper amount of air for complete combustion of the gas in the burner chamber. However the air valve is not essential and may be omitted altogether. In the burner chamber 13, a Bunsen burner 24 of any suitable construction is mounted which is connected to a gas main by pipe 25. A gas cock 26 is provided in said pipe which is operated by a vertical rod 27 extending to the register, said valve being provided with a minute opening so that a pilot flame will be burning in said burner when the valve is totally closed. 'Ihe rod 27 has a handle 27 at its upper end which may be grasped to draw the rod up or down and operate the valve 26.
A horizontal metal screen 28 is mounted in the burner chamber 13 above the Bunsen burner which supports a layer of lire clay l par balls 29 which serve to retain the heat and also facilitate and eect a perfect combustion of the fuel gases.
A short connecting passage 30 leads from the upper end of the burner chamber to the top of the adjacent radiator section 14. The radiator sections 111 are of the shape of annular chambers closed at the top and bottom, each pair of adjacent radiator sections being in communication by a vertical passage 31 extending the whole height of said sections. This construction of the radiator sections provides a vertical cylindrical air heating chamber 32 open at the top and bottom, whereby the cold air entering through the aperture 12 in the airchamber 15 rises and becomes heated during its passage, and enters Y. the room through the register 11. The last radiator section 1a has an outlet port 33 near the bottom thereof, through which the waste Vgases pass out through a vent pipe or waste gas olf-take Hue 3st. This off-take flue 34 is connected to a chimney or leads out to the atmosphere. c
It may occur that when the burner is first started, and especially in case Where there are many radiator sections, that the waste gases will not be easily taken off through the vent pipe 34. To overcome this difliculty, I provide a by-pass 35 connecting the top of. the last radiator section with said vent pipe. The waste gases will flow through this by-pass wit-hout any difliculty since there is a practically horizontal passage from the top of the burner chamber to said by-pass. As soon as a good draft is established, the by-pass 35 is closed by means of a damper 36 operated by a handle 37. y In ,the operation of the floor heater the gas cock 26 is opened, thereby starting the Bunsen burner 24, which is ignited by the pilot tlame. The hot gases rise and flow to the top ofthe burning chamber to the adjacent radiator section, where they will be distributed throughout the intercomniunicating radiator sections, aportion of said gases flowing near the top of said sections, while the remaining portion will flow downwardly until all the gases reach the last radiator section, where they pass out through the vent pipe 34. The heating gases are now considerablyk cooler because of thel heat unitsextracted therefrom by the air currents flowing upwardly through the central air chambers 32 and between the sidewalls of the outer casing 10 and the outer walls ofthe radiator sections.
It should be noted that the hot gases in their progress not only rise in the burner chamber and descend in the annular radiating chambers, but that they must pass in turn around each vertical air heating chamber 32; and also that said hot gases in passing from each radiator section to the next are compelled to strike at right angles against the central tube` forming the walls of each air heating chamber 32.
Thile I have shown my air heater embodied in the form of a floor heater, it will be understood that the same may be used also as a wall heater, in which a vertical register will be used in place of a horizontal one as will be understood, and other obvious changes'necessary to adapt the heater to such location. l
I prefer to cast the burner chamber and the radiator sections in two vertical halves so that'the vertical and horizontal flanges 3S suitably fastened together and made gas tight will run along the vertical sides and the top and bottom as shown in Fig. 2.
While I have shown the preferred construction of the heater as at present known to me, I do not desire to confine myself to the specific construction of the heater as shown and described as various changes in the arrangement and construction of the parts thereof may be made without departing from the spirit of my invention as deeach of said radiator sections, each pair of adjacent radiator sections being connected by a passage extending throughout the height of said sections, a passage connecting the top of said burner chamber with the top of the adjacent radiator section, a Waste gas off-take flue leading from the last radiator section, a burner in the lower end of said burner chamber and valve controlled means for supplying fuel to said burner.
2. A heater comprising a casing having a register, an air inlet in said casing at a point remote from said` register, a burner chamber and a plurality of vertical tubular radiator sections mounted within said eas ing and in spaced relation thereto, a vertical air pipe open at both ends, centrally disposed in each of said radiator sections, each pair of adjacent radiator sections being connected by a passage extending throughout the length of said sections, a passage connecting the top of said burner chamber with the top of the adjacent radiator section, a waste gas off-take flue leading from the bottom of the last radiator section, a burner in the lower end of said burner chamber and valve controlled means for supplying fuel thereto.
3. A heater comprising` a burner chamber, a plurality of tubular radiators, a tube extending through each of said radiators open at the top and bottom so that air may pass momes therethrough, said burner chamber communicating at the top with the top of the adjacent radiator, each pair of adjacent radators being connected by a passage extending throughout the height thereof, a burner in said burner chamber, means for supplying fuel to Said burner, means for supplying air to said burner, a Waste gas off-take leading from the lower end of the radiator farthest from said burner, and a register plate extending over the top of the heater.
In testimony whereot1 have signed my name to this specioation.
JoHN n. HOLMES, JR.
Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.
Washington, ZD G.