US2538169A

US2538169A - Boiler unit

Info

Publication number: US2538169A
Application number: US32381A
Authority: US
Inventors: Steiner George
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-06-11
Filing date: 1948-06-11
Publication date: 1951-01-16
Anticipated expiration: 1968-01-16

Description

Jan. 16, 1951 Filed June 11, 1948 FIG. 1.

G. STEINER BOILER UNIT 2 Sheets-Sheet 1 n 1N VEN TOR.

ATTORNEYS.

G. STEINER BOILER UNIT Jan. 16, 1951 2 Sheets-Sheet 2 Filed June 11, 1948 IN VEN TOR. GEORGE STE/N58,

Patented Jan. 16, 1951 UNITED STATES, PATENT I ()FFICE George Steinen'New Haven, Mich.

Application June 11, 1948; Serial No. 32,381

This invention relates to fluid heaters, and more particularly to a hot water heater for use as a boiler in a heating system.

A main object of the invention is to provide a novel and improved boiler which is simple in construction, compact in size, easy to maintain,

and which utilizes the heat from the heating source with a maximum degree of efficiency, whereby the boiler is very economical in fuel consumption.

' A further object of the invention is to provide an improved boiler for use in heating systems and the like, wherein the products of combustion are maintained in close heat-conducting relation to the water chamber, said chamber being arranged in a very compact manner and with maximum exposure to the'products of combustion, the boiler being inexpensive to manufacture, rugged in construction, and cheap to operate.

Further objects and advantages of the invention will become apparent from the following description and claim and from the accompanying drawings, wherein:

Figure 1 is a vertical cross-sectional view taken through a boiler constructed in accordance with the present invention.

Figure 2 is another vertical cross-sectional view of the boiler taken on line 2-2 of Figure 1.

Referring to the drawings, the boiler unit comprises a base shell H in which is positioned a suitable burner I2, such as an oil burner, the fuel conduits for the burner being shown at I3, I3. Shell II is provided with a conventional hinged door I4 and is formed at its top margin with an outwardly projecting flange I5. Designated at I6 is the boiler main housing, said main housing being formed with a bottom flange II supported on said flange I5 and secured to flange I5 as by bolts I8.

The housing I6 is generally rectangular in plan and the walls thereof are hollow, defining a water jacket I9. Water jacket I9 extends around the top and sides of housing I6 except for a portion of one side of said housing, at which a door 20 is provided. The water jacket may be considered to be formed of an inner casing open at one end and having its open end resting on base II and a second casing surrounding and spaced from said first casing and fixedly secured thereto to form the water jacket I9.

Designated at 2| is a flat vertically rising zigzag or serpentine water conduit secured within housing I6 and extending for the full internal width thereof. At one, side said conduit is secured to an inner wall 22 of the back wall of the 1 Claim. (Cl.,122-,-165) water jacket I9. At the other side said conduit is abutted by door 20. The lower end of the conduit 2| is connected to the bottom portion of Water jacket I9 by a short pipe section 23. The top end of conduit 2| is connected to the top of the water jacket I9 by another short pipe section 24. Connected to the top of the water jacket I9 are outlet conduits .26, 25, leading to the radiators of the system. Connected to the bottom portion of said water jacket is the cold water return conduit 21.

Securedto the inner walls of the Water jacket and coextensive in width with the flat zig-zag Jconduit 2| are alternating baffle plates 28 extending horizontally in the planes of the respective bends of the conduit 2| but spaced at their inner ends from the bends to provide flue passages 29 for the upwardly flowing gaseous products of combustion generated by the burner I2. Formed integrally with the housing and extending partly in jacket I9 is a flue 3!] provided at its top end with a duct portion 3| communicating with the flue space above the top end of the flat water conduit 2|. Flue 3B is connected to a flue pipe 32 leading to the smokestack or chimney which provides draft for the burner.

Designated at 33 is a clean-out duct aligned with duct portion 3| and integrally formed in the wall of housing I6. Hinged to the outside of the housing wall is a door 34 normally closing off said clean-out duct.

The bottom door I4 is of the conventional furnace door type provided with vents for the admission of air to the burner. The usual slidable cover plates may be provided for said vents to regulate the amount of air admitted. Duct 32 may be likewise provided with an adjustable flap damper to regulate the draft in the usual manner.

In operation, water in the jacket I 9 and in the flat vertically rising zig-zag conduit 2| is heated by the gaseous products of combustion generated by burner I2, said gaseous products travelling upwardly around the conduit 2 I on both sides thereof past the inner ends of the alternating baffles 28 to the flue duct 3 I. The battle plates 28 guide said gaseous products substantially along the surfaces of the zig-zag conduit, requiring said products to flow through the passages 29 adjacent the inside bends of the conduit. This maintains the gaseous products in close proximity to the surfaces of the conduit and assures efflcient transfer of heat from the gases to the water in the conduit. A very large heat transfer area for a given boiler volume is thus provided.

It will be seen from Figure 2 that by opening the side door 20, access to substantially all of the heat transfer surfaces of the zig-zag water conduit 2| may be obtained. This enables said surfaces to be frequently cleaned so as to maintain them in a highly efiicient condition. The ability to readily clean these surfaces makes it possible to operate the boiler economically as to fuel requirements, and also makes it possible to bring the system up to working steam pressure in a very short period of time.

Residual heat in the exhaust gases is transferred to the water in jacket I9 from the portion of flue 30 which extends through said jacket.

While a specific embodiment of a boiler for use in steam heating systems has beendisclosed in the foregoing description, it will be understood that various modifications within the spirit of the in vention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claim.

What is claimed is:

A boiler comprising a base, a casing having one end open positioned with its open end resting upon said base and secured thereto, a burner mounted within said base and in communication with the open end of said casing for generating heated products of combustion, a vertically disposed serpentine conduit positioned within and fixedly secured to the back wall of said casing and bearing against the front Wall of the latter and spaced from the opposed side walls of said casing, a second casing surrounding and fixedly secured to said first casing and spaced from the latter to thereby form a Water jacket, an inlet adjacent the lower end of said second casing for admitting water to be heated into said jacket,

an outlet in the top of said second casing for withdrawing the heated water from said jacket, a horizontally disposed pipe positioned within said first casing adjacent the lower end thereof and having one end in communication with said jacket and the other end in communication with the lower end of said conduit, a second vertically disposed pipe positioned within and adjacent the upper end of said first named casing and having one end in communication with said jacket and the other end in communication with the upper end of said conduit, a plurality of horizontally disposed bafile plates positioned in opposed spaced vertical relation with respect to each other and fixedly carried by said first named casing and forming with said serpentine conduit a tortuous passage wa for the passage of products of combustion therethrough, an outlet flue in communication with the upper end of said first named casing for Withdrawing the products of combustion from the first named casing.

GEORGE STEINER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 565,866 Winkle Aug. 11, 1896 1,462,018 Mason July 17, 1923 1,681,726 Brie Aug. 21, 1928 1,696,206 Lange Dec. 25, 1928 1,908,125 Davidson May 9, 1933 2,176,061 Carruth Oct, 1'7, 1939 2,210,891 Bork Aug. 13, 1940