US1208409A - Humidifier. - Google Patents

Description

D. VAN EVERA.

v HUMIDIFIER.

APPLICATION FILED FEB. 9. 1916.

Patented Dec. 12, 1916.

DEWITT VAN"EVERA, OF CHICAGO, ILLINOIS.

HUMIDIFIER.

Specification or Letters Patent.

Patented Dec. 112, T916.

Application filed February 9, 1916. Serial No. 77,141.

To all whom it may concern a Be it known that T, DEWITT VAN EVERA,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Humidifiers, of which the following is a specification.

My invention relates to humidifiers and has especial reference to devices of this character for use with hot air furnaces.

One of the objects of my invention is to provide a humidifier, or vapor'pan, to be placed within the jacket of a hot air furnace so as to moisten or humidify the air that is heated by'the furnace and delivered to the pipes to be conveyed to remote areas to be heated, and means, operable from without the furnace jacket to regulate the heat applied to the water within the pan whereby to vary the quantity of water to be evaporated within a given time without changing or modifying the heat produced by the furnace.

Another, and more specific object of my invention is to provide a dead-air space below the water-containing vapor pan to reduce the effect of the heat from the furnace on the water within the pan and openings, within the walls surrounding said air space, whereby to admit heated air from the furnace, directly under the bottom of the pan,

or to shut it off, to intensify or reduce the 1 effect of the heat on the water, to evaporate a larger or smaller quantity with a given furnace temperature, and means to close the openings to provide the dead-air space.

Other and further objects of my invention will become readily apparent, to persons skilled in the art, from a consideration of the following description when taken in conjunction with the drawings, wherein Figure, 1 is w an elevation of a furnace, showing parts in section, with my humidifier applied thereto. Fig. 2 is an enlarged View of the bottom wall of the pan-supporting casing showing the dampers applied thereto.

In both views the same reference characters are employed to indicate similar parts. 5 is a furnace, of the usual construction, provided with a radiator 6, comprising a central dome 7 and an annular hollow drum 8, joined, as at 9, as usual in furnaces of this general character.

10 is the flue opening through which the gases escape from the furnace -5 and 11 is the usual fuel door and 12 the ash door and damper.

13-13 are the pipes by which the hot air is conducted to remote areas to be heated, and 15 is the outside \jacket of the furnace.

16 is the vapor-pan centrally located and preferably supported immediately above the central dome 7, having a bottom 17 and an annular extending peripheral rabbet 18. It is connected with a float tank 19, on the outside of the furnace, by means of a pipe '20.

The tank 19 contains a float 21 which con- I trols a Water inlet valve 22 which opens and closes the water supply pipe 23 as the float 21 is lowered or raised by the water 2-1 within the tank. An overflow pipe 25 extends through the tank 19 and terminates in a plane at which the level of the water 27 is to be maintained. The constancy of head or level of water may always be maintained in the vapor pan by this means. The vapor pan 16 sets upon a hollow structure or casing' 29 that immediately supports the pan.

and which is intermediate the pan and the central dome 7. The structure 29 is providedwith a bottom wall 30 having a series of ports or openings 31 and annular side walls 32 having openings 33. The upper edge of the annular wall of the structure 29 is located within the rabbet 18 of the vapor pan, so as to hold the pan centrally and firmly in place. The structure 29 is also provided with four legs 35. A series of dampers 36 are adapted to overlie the openings 31 in the bottom of the structure 29 and another series of dampers 40 are adapted to close the openings 33 in" the annular wall 32 of the structure 29. A damper rod 41 is connected to the dampers 36 and 4.0 and extends to the outside of the furnace jacket, as

at 42. When all of the dampers are closed there is a dead-air space 43 within the structure 29 so as to decrease the eflect of the heat upon the bottom 17 of the vapor pan 16, or to insulate the pan to some extent from the direct rays of the heat emanating from the dome. Now when the dampers are opened, as shown in dotted lines in Fig. ,2, the hot air gfrom the central dome will pass up through the openings 31, in the bottom of the structure 29, making contact with the bottom 17 of the vapor pan and will pass out through the openings 33 in the side walls of the structure 29, thereby creating a draft of hot air through the otherwise closeddeadair space 43 and increasing the effect of the heat upon the Water 27 contained in the vapor pan, thereby controlling the amount of vapor evolved from the Water 27, or the temperature of the Water, from the outside of the furnace without changing the condition of the heat within the furnace.

When too muchwater is being evapo- 16 thereby insulating the pan to some extent from the effect of the heat emanating from the dome. When a larger quantity of water is to be evaporated, the dampers are opened,

causing a draft of hot air from immediately below the structure to pass through the structure and make contact with the bottom of the pan thereby evaporating a greater quantity of water. This effect may be modified to suit the convenience of the user by opening or closing the dampers to a greater or less extent.

In situations where a constant supply of Water is not maintained as in cities, the supply pipe 23 may be lead to a relatively large receptacle, such as a barrel, tank or the like, through which Water may be supplied automatically to the vapor pan 16, through the instrumentality of the float 21 in the relatively smaller tank 19. In this event the larger tank, or source of water supply, may be located above the tank 19 so that the water will flow thereinto through the pipe 23 by the effect of gravity.

The pan 16 and the structure 29 are preferably'made of cast iron, so as to avoid possibility of leak or other deleterious efi'ect due to the change in temperature and the effect of water upon the metal in which it is contained.

Having described my invention, What I claim is:

A humidifier for a furnace comprising a water holding pan; a casing interposed between the furnace and pan and having perforate bottom and side walls; closures for said perforations and connecting means for operating said closures extending to with out the furnace.

In testimony whereof I hereunto set my hand in the presence of two subscribing witnesses.

DEWITT VAN EVERA. In the presence of Foniin BAIN, MARY F. ALLEN.

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