US1087875A - Furnace. - Google Patents

Description

G. GARRECHT.

FURNACE.

APPLICATION FILED APR. 14, 1913 Patented Feb. 17, 1914.

I 1 1 il ll y '1 MW) UNITED STATES PATENT OFFICE.

GEORGE GARRECHT, OF ST. LOUIS, MISSOURIQJASSIG-NOB TO HAYNES-LANGENBEBG MANUFACTURING COMPANY, OF ST. LOUIS, MISSOURI, A GGRPORATION OF HIS- sonar,

1 Specification. Letters Patent.

FURNACE.

Patented Feb. 17, 1914.

' This invention relates to furnaces and particularly to apparatus to be used in connection 'lih furnaces popularly known as hot air furnaces for humldifying the air before it is introduced into the distributing system.

fire chambplr B.

' s in the form An object of the invention is to produce an apparatus of the type mentioned which will be automatic in action and which. Wlll supply to the air heating chamber of the furnace a constant and steady supply of va or or steam, which mixes with the air an is carried with it throughout the "distributing system.

With this general object, and incidental features which will be obvious from the following disclosure, in view, I have designed and arranged the several coiiperating parts hereinafter more fully described, reference being made to the accompanying drawing in which-- Figure 1 is an elevation with a part of the difierent elements broken away, fully illustrating the several parts in their preferred arrangement constituting the present invention. Fig. 2 is a cross-section through the fire chamber of the furnace illustrating in detail the arrangement of the water heating unit.

In the embodiment of my inventionillustrated in the drawin A indicates the furnace "casing in which is located the drum or Within the drum or combustion, chamber B is located the fire pot formed with side walls of fire brick in the manner understood, and is adapted to contain a bed of coal or other suitable fuel. It will be understood, of course, that the heat from the fire pot radiates from the 'drumhnd heatsthe air which is introduced within the casing from any suitable source, and that the air thus heated is ponducted from the casing through the an supply pipes G. In the embodiment shown ,1 have referred to employ a canopy top r of an inverted cone and assists 1 vdistributing the heated air, and in mix-- I g therewith the vapor, in the manner here- I which I I fter more fully" disclosed.

lf or producin the va or which is to be mixed with the sated air I provide a tank I 1 which'is' located cxteriorly of the casing and is arranged to ontain water, which circulates through ahollow chamber or water back 2 by means of the inlet and return pipes 3 and 4. The hollow chamber or water back 2 is arranged in the wall of the fire pot, as clearly shown in Fig. 2. The hollow chamber or water back 2 is preferably made the same size and shape, with respect to'its outer dimensions, as a single fire brick employed in constructing the wall of the fire pots thus facilitating-the construction of the apparatus. Thus the water contained within the tank 1 is heated and ives oii' aqueous vapor which rises from the tank and passes into the casing A through the pipe 5, which communicates with said tank 1 above the water line. The pipe 5 is provided at its inner end with an upturned outlet passage 6, through which the vapor from the tank 1 is emitted into the casing A, preferably below the apex of the canop D. The vapor is thus distributed throng lent the heatedair just as it enters the hot air distributing pipes C, forming a uniform mixture of air and moisture thereby producmg humidified air of the proper relative moisture, for distribution through the system.

In order to maintain a constant supply o't water within the tank 1, I provide a separate supply tank 7 which is connected by the p pe 8 with the tank 1 and may be provided with a drain valve 9, for draining tanks 1 and 7 when the apparatus is not in use. The tank 7 is kept constantly supplied with water through the supply pipe 10 connected with any permanent source of water supply, which pipe is controlled by a float valve of known construction indicated by ll, so that a predetermined level of water may be constantly maintained within the tank '5 thereby preventing the level of the water in the tank It from falling below a requisite level.

From the foregoing description, the operation of the apparatus is evident and it will be apparent that it is simple and durable in construction and positive and automatic in'its operation, supplying'the requisite amount of moisture for producing the re uired humidity of the air which is distri uted through the heating system.

to limit*inyseli to the exact details shownv and described, but what I claim anddesire to secure by Letters Patent is:

- ,1. in combination with a furnace comprising a casing,-air distributing pipes located near the upper art of said casing, a heat-mg drum and a re pot, of a tank 10- ;pated exteriorly of said casing, a water back constituting a part oi the Wall of said fire pot, an inlet and a return pipe between said tank and said Water back, a steam conduit communicating with said tank above the level of the Water contained therein and extending into the upper end of said casing, a supply tank, apassage between said supply tank and said first-named tank, and a water service pipe automatically controlled by the level of Water in said supply tank for supplying water to said tank, substantially as specified.

2. In combination with a furnace comprising a casing, air distributing pipes located near the upper art of said casing, a heating drum and a e pot, of a tank located exteriorlyof said casing, a water back constituting a part of the Wall of said fire tan located above the line of liquid contained in said tank and leading from'said tank and pot an inlet and a return pipe between said k and said Water back, a steam conduit.

haying open communication with the interior of said casing, a supply tank, a passage between said supply tank and said firstnamed tank, a service pipe extending Within and opening into said supply tank, a valve in said service pipe Within said tank, and a float lever actuated by the water Within said supply tank for controlling said valve, substantially as specified,

3. In combination with a furnace comprising a casing, air distributing pipes located near the upper part of said casing, a heating drum and a fire pot, of a tank adapted to contain a liquid and located exteriorly of said casing, a Water back arranged to be; effected by the heat generated in said fire pot, an inlet and a return pipe between said tank and said Water back, a pipe constituting a conduit adapted to con duct vapor from said tank into said casing, a supply tank, a passage between said supply tank and said first-named tank, a Water service pipe and automatic ineans'ior controlling said Water service pipe, substantially as specified.

In Witness whereof, I have signed this specification in the presence of two subscrib.

ing witnesses.

GEORGE GARRECHT. Witnesses: l

R031. M. Wilson, L. C. KINGSLAD.

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