US1392366A - Steam-generator - Google Patents

Description

A. E. SNOW.

STEAM GENERATOR.

APPLICATION FILED JUNE 14. 1918.

Patented Oct. 4, 1921.

UNITED STATES PATENT, OFFICE.

Anrnun E. mom or 1mm, PENNSYLVANIA, AssIoNon 'ro rm: AMERICAN LAUNDRY MACHINERY comrANY, or NORWOOD, OHIO, A coaronA'rroN or 0x10.

STEAM-GENERATOR.

Specification of Letters Patent.

Patented Oct. 4, 1921.

Application filed June 14, 1918. Serial No. 240,089.

To all whom it may concern:

Be it known that I, ARTHUR E. SNOW, a citizen of the United States,- residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Steam-Generators; and I do hereby declare the following to be a' full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, andto the letters of reference marked thereon, forming part of this specification.

My invention relates to steam generators for use in clothes cleaning plants, where a moderate supply of low pressure saturate steam is required in the renovation and pressing of garments; and the object of the present invention is to supply such a generator, which can be economlcally constructed and operated, and in which the steam and water container will not be subjected to the direct action of the fire.

To accomplish the objects of my invention I provide a primary or heating chamber of comparatively shallow vertical cross-section, which is provided with one or more fire passages therethrough which are surrounded by water in said primary chamber, and under said primary chamber there is a means of providing heat for heating water within said chamber. This primary or heating chamber is preferably provided with a hand-hole by means of which access may be had to the interior thereof.

I also provide a vertically elongated secondary chamber or receptacle for water and steam, which is in circulatory communication with said secondary chamber, and placed in such a position with relation thereto that it does not receive the direct action of. the fire supplied to the under side of the primary chamber. In order to conserve as many as possible of the heat units of the fire-gas, I inclose both primary and secondary cham bers in a shell which serves to confine the products of combustion around the exterior walls of said chambers.

This secondary chamber is preferably constructed of tubing about six inches in diameter and thirty inches long, the ends of which are closed by means of caps ofordinary construction, the lower cap being preferably connected with the primary chamber by means of a short horizontal pipe, with another pipe leadin from the upper portion of said primary 0 amber into the secondary chamber above the lower cap. This construction and arrangement is very eflicient in operation, and inexpensive to make.

These and other features of my invention are hereinafter fully described and pointed out and are illustrated in the accompanying drawings in which 2- Figure 1, is a side elevation, partially in section, of a steam generator embodying my invention.

Fig. 2, is a transverse section of the same on the line 22 looking downward in Fig. 1.

Fig. 3, is a like view on the line 3-3 looking downward in Fig. 1.

Fig. 4, is a horizontal section of the lower chamber-cap and primary chamber on the line in Fig. 1, looking downward; the same being on an enlarged scale and removed from its inclosing shell.

In these drawings A indicates a piece of tubing of suitable length and diameter, the

steam under pressure higher than atmospheric. From one. side of the lower cap A. a blow-off pipe extends which is provided with the usual blow-ofli' valve by means of which the water in the chamber can be' drained when desired.

Connected with the lower cap A, -by means of a nipple a is a relatively shallow primary water heating chamber B which is provided with one or more fire passages B, therethrough which are surrounded with the water in said chamber, and from said primary chamber B a pipe 0 extends upwardly therefrom and is tapped into the secondary chamber A above the lower cap A, preferably just under the normal water line therein. 1

The primary heating chamber is preferabl provided with a neck B extending latorally from the edge thereof, which neck is oval in cross-section and is rovided with an internal annular flange a a ted to engage an ordinary hand-hole late The object of said neck and hand hole plate being to give ready access to the interior of said primary chamber when desired, and-the walls of the fire-passages B tying as they do the upper and lower walls of the primary chamber providing surfaces to rece1ve the action of the products of combustion and transmit the same to the water in said chamber and surrounding such fire-passage's.

The rimary heating chamber B is preferably ocated in the same horizontal plane with the lower cap A of the secondary chamber A, and at one side thereof, so that the walls of secondary chamberA are not subject to the direct action of the fire under the primary chamber B. Surrounding the primary chamber 13 and the lower end of the secondary chamber A is an oblong casing D, which has an opening d in one end of the top thereof through which the chamber A is supported, the perimeter of said opening d being in spaced relation to the circumference of the chamberA.

I preferably provide an upturned annular flange d around said openind d, around which flange a vertical shell E is fitted, which shell E extends upwardly to a point slightly above the upper cap A of the chamber A, where it is provided with a cover E, which has a smoke exit opening e therethrough, from which a smoke-flue (not shown) may be extended to such point as may be most convenient. A steam outlet F leads from the upper ca A throu h the cover E, to a safety va ve F of or inary construction, and through a branch to the point of steam consumption, not shown.

Under the rimary heating chamber B, within the inclosing casing D is placed the heating means, shown in Fig. 1 in the form of an ordinary gas-burner. It is obvious however, that other means of supplying heat under the primary water heating chamber B can be used with good results without material chan e in the construction of the apparatus as s own.

In the drawin s I: have shown the upper surface of the inc osing shell D as being flat; the object thereof being to rovide a place upon which to locate a fe water heating tank G which I preferably form to fit partially around the vertical shell E so that the contents of the tank G will absorb heat from said inclosing shells D and E; the bottom of the feed-water tank G being artially over the primary water heating 0 amber, B so that Fit receives heat from both shells D an nausea piirpose a. pipe H extends from said In operation the primary and secondary chambers B and A are supplied with water until the level thereof within the chamber A is slightly above the point where the pipe 0 enters the chamber A; and the feed-water tank is filled with water. Fire is then placed under the shallow primary heating chamber B, so that the flame and products of combustion engage the exterior surface thereof and pass through the fire passages B therein, and then travel horizontall in the shell ,D under the feed-water tank and thence upwardly through the opening 01 from whence they move upwardly within the shell E around to secondarilchamber A to the smoke exit e in the cover The water in the primary heating chamber B, by means of the action of the fire, and the shallowness thereof-within said chamber is rapidly converted to steam which travels upwardly throu h the.pipe C to the secondary chamber A, t 1e action of the heated gas within the shell E acting to prevent condensation of the steam within the chamber A. It will be evident to those skilled in the art that the device I have shown and herein described will be very economical in construction and operation.

Having thus fully shown and described my invention so that those skilled in the art can utilize the same, what I claim as new and desire to secure b Letters Patent is In a device of the c ass described a horizontally elongated casing, a vertically elongated casing in communlcation therewith, a primary water heating unit within one end of said horizontall elongated casing a secondary water an steam member wit'in said vertical casing extending downwardly into said horizontally elongated casing in circulatory communication. with said primary water unit, a feed-water tank mounted on said horizontally elongated casing over said primary water unit and contacting with said vertical casing, and means to supply heat within said horizontally elongated casing, substantially as set forth.

n testimony whereof I afiix my signature.

ARTHUR E. SNOW.

Images