US2006782A - Boiler - Google Patents

Description

July 2, 1935. M MR H A, 2,006,782

BOILER Filed April 11, 1931 -1OI1UL) 0 000 000000 D 000 v o u o ooooouuooouo IHQILII ooooonuunnonnuo Mia/2062 Z lisp/7a Edward ZZzer IN VEN TOR-5 A TTORN E YS.

Patented July 2, 1935 PATENT OFFICE BOILER Michael Zier and Edward M. Zier, New Albany, Ind., assignors to Helen K. Zier and Rozine B. Zier, both of New Albany, Ind;

Application April 11, 1931, Serial No. 529,434

, 3 Claims.

and replaced when necessary and in which the maximum amount of heat may be obtained from the use of a minimum amount of fuel.

Another object of our invention resides in the provision of a boiler of the character described in which an outer casing and inner chamber are provided, the water tubes extending through the heads of the inner chamber and communicating with the interior of the outer casing, and the heat being introduced directly into the inner chamber and into direct contact with the water tubes.

A further object resides in the provision of means whereby the heat is directed into the inner chamber or combustion chamber at a point above the surface of the lower head, this means allowing the heat to be directed into the chamber and into contact with the water tubes so as to secure the best results and to prevent burning out the lower head of the chamber.

A still further object consists in the provision of novel means for supporting a fuel bed and novel means whereby clinkers or ashes may be removed.

With the above and other objects in View, which will appear as the description proceeds, our invention consists in the novel details of construction, and arrangement of parts described in the following specification and illustrated in the accompanying drawing, and while we have illustrated and described the preferred embodiments of the invention, as they now appear to us, it will be understood that such changes may be made as will fall within the scope of the appended claims.

In the drawing:-

.Fig. 1 is a side elevation.

Fig. 2 is a top plan. 7

Fig. 3 is a transverse vertical section with parts shown in side elevation, and 1 Fig. 4 is a horizontal section on the line 4-4 of Fig. 3 looking in the direction of the arrows.

In that form of our invention disclosed in Figs. 1 to 4 inclusive I indicates the outer casing and 2 the inner or combustion chamber so positioned within the outer casing as to provide a space around its sidewall and beyond its heads to allow for the circulation of water within the casing. The outer casing includes the cylindrical side wall, the top head 3, and thebottom head 4, the bottom head being inset above the lower end of the casing as shown more particularly in Fig. 3 of the drawing. The bottom head 4 is provided with the manhole 5 normally closed by the plate or cap 6 and the top head is provided with the two' manholes! normally closed by the plates or caps 8. Water is introduced into the casing I through means. of the pipe 9 and steam or water ray be removed from the top" of the casing by means of the pipe iii. At N we have illustrated a door normally closing'an opening in the casing whereby clinkers 1nay be removed from the fire bed'when desired.

The inner or combustion chamber 2 consists of the circuinferentially corrugated side wall l2,the top head i3, and the bottomhead M, the top head being provided with an opening l5 surrounded by the upwardly extending flange 16 in which is telescoped the depending flange ll of the cap I8. A fuse plug i9 is provided in the cap l8 to act as a safety blow-off should the water within the casing 1 fall to a level below the upper surface of the cap fact that the flange i6 and associated cap '18 provide an extending portion above the upper surface of the head it to prevent burning out of the head 13. As has been previously stated the fuse plug, being carried by the cap 58 will blow out when the water within the casing reaches a level below the top of the cap and thus prevents the water from reaching a level below the top head iii of the chamber 2 which would cause the head to burn out. The bottom head it is provided with the opening 25 arranged off-center and positioned at a point adjacent the opening closed by the door H for a purpose which will be later apparent. Depending from the opening 2% is a sleeve 2| which leads to and communicates with an opening 22 formed in the bottom head 4 of the casing I. The lower end of the sleeve 2i is secured to an upwardly extending flange 23 formed around the opening 22 and secured to the head 4 and depending therefrom is an air box or chamber 24 having an air inlet 25 to which, if desired, a fan may be attached. An inner sleeve 26 is positioned within the opening 2d formed in the head l4 and extending through this sleeve is the upper portion of a member 2? forming a part of or secured to an automatic Stoker of any desired form. The member 21 is of such a diameter as to form the space between the same and the sleeve 26 to provide an air passage and the upper end of the member has the outwardly'extending flange 29 which will be spaced above the upper end of the. sleeve 26 to provide an air passage. Perforations 30 are formed in the member 21 and allow air to pass to the interior of the member to allow proper burning of the fuel. The fuel is. fed into the member 2'! through the opening 3| of an extension which will pass through the side of the air box or chamber 2d. r

A vertically extending wall 32 extends from the bottom head M of the inner or combustion chamber 2 and terminates at a point below the upper head l3 as shown more particularly in Fig. 3 of the drawing. Vertically extending water tubes We wish to lay particular stress on the 7 ja V 33 are positioned within the chamber 2, on both sides of the wall 32 and their ends pass through the heads [3 and I4 to communicate with the interior ofthe casing 1. Thus water within the 2 5 casing I will circulate through these tubesi We wish to lay particular emphasis on the manner in which the tubes. are arranged so as to fcrm a space over the opening 20 in the bottom head M as shown more particularly in 4 of the drawing. This space forms a clearance for the bed of fuel and the fuel will engage those'tubes surrounding the space. At 34 I have shown a flue for taking off the products of combustion, the lower end of the flue communicating with the chamber 2 as shown more particularly in Fig. 3

the hot bed of fuel supported above the head and directly within the chamber 2 all heat is utilized for heating the tubes and side wall of the chamber. At the same time, as previously stated, the hot bed of fuel will engage those tubes adjacent the bed and so aid in the heating. The products of combustionpass upwardly and over the upperend of the wall 32 and then pass downwardly and out through the flue 34. Proper air is provided for causing the fuel to burn, such air entering the box or chamber 24, passing through the space '26, the space 'beneath'the flange 29, andthrough theperforations 28. With our construction and arrangement of manholes access may be had interiorly of the casing I and chamber'2 for cleaning purposes and for replacing parts which may be worn. The fuel bed is positioned at such a point relative to the opening closed by the door II to permit ready removal of any clinkers which may form;

In' our boiler it will be noted that the heat is introduced directly into the combustion chamber, above the upper surface of the lower head thereof, and directed against the water tubes. It will also be noted that the innermost water tubes are engagedrby the bed or mass of fuel and form a support therefor. The sides of the combustion chamber are corrugated to add strength thereto but when desired stay bolts may be used. Our boiler'may be used for any desired purposesuch as dairies or similar places where a large amount of steam is necessary, and, of

course, we do not desire to be limited by such use. By introducingthe heat directly with the combustion chamber above the upper surface of the lower head the life of the lower head will be prolonged and the head will not so readily be burned out. a

Having fully described our invention what we claimas new and desire to secure by Letters Patent is:

1. A boiler of the character described including an outercasing formed with a side-wall and upper and lower heads, a separate and distinct combustion chamber formed with a side wall and upper and lower heads, the combustion chamber being positioned within the outer casing with its side wall and heads spaced from the side wall .and'heads of the casing and the heads of the combustion chamber having aligned openings positioned off center, a door carried by the outer casing and adapted to normally close an entrance open n t t om us n chamber, .said. en-

trance opening being positioned'in close proximity to the opening in the lower head of the combustion chamber, water tubes positioned between the heads of the combustion chamberand surrounding the openings in' the headstherecf with the exception of a space aligned with the entrance opening, a member positioned in the opening of the lower head of the combustion chamber for supporting a bed of fuel above the lower head whereby heat is generated directly in' the combustion chamber above the lower head thereof 2. Aboilerof the character described includf ing an outer casing formed with a side wall and upper and lower heads, aseparate anddistinct combustion chamber. formed with aside-well upper and lower heads the combustion being positioned within the. outer casing with its side wall and heads: spaced from filmame wall and heads of thew-sing and the, lowerlaead of the combustion chamber having an. opening positioned of! center, adoor by the outer casing and adapted tonormally close an entrance opening to the combustion chamber, said en- 7 trance opening being positioned in close proximity to the opening inthe lower head of theccmbustion chamber, water tubes positioned between the heads of the combustion chamber, and surrounding the, opening. in the. lower'head thereof 7 with the exception of arspace aligned with the entrance opening, a member positioned in the opening of the lower headof the combustion chamber for supporting ,a. bed of fuel ,abofvethe 7 lower head whereby heat is generated directly in the combustion chamber above the. lower head thereof and into direct engagement with certain of the water tubes surrounding the opcmng,

means for conveying spent heat from. the com,- bustion chamber, and a baille wall positionedin the combustion chamber between the bed ,ct iuel and the means for conveying the'spent heat.

7 3. A boiler of the character described including an outer casing formed with a side wall and upper and lower. heads. a scnamte and distinct combustion chamber formed with a. side wall and upper and lower heads, vthe combustion chamber being positioned within. the outer casing with its side wall and heads spaced from the side wall and heads of the casing and the lower head 0! the combustion chamber having an' opening; positioned off center, a door carried by the outer casing and adapted to normally close an entrance opening to the combustion chamber, said entrance opening being positioned. in; close proximity to the opening in the lower head of the combustion chamber, water tubes positioned .be- .tweenthe heads of the combustion'chamber. and surrounding the opening in the lower head thereof with the exception of a space aligned with the entrance opening, and a; member depending through the opening of the lower head of the combustion chamber for supporting a bed of fuel above the lower head whereby heat is generated

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