US1605218A - Furnace - Google Patents

Description

Nov. 2 1926. 1,605,218

W. D. CRITES FURNACE Filed April 17. 1925 #iZlO/F/ TES.

Patented Nov. 2, 1926.

UNIITEDSTATEIS PAT-Eur WILLIAM D. CRITESyOF DULUTH, MINNESOTA;

FURNACE.

Application filed Apri11'7, 1925. Serial 110.23,?50.

by a portion of the return. water is brought Io into more direct contact with the heating element than in the ordinary furnace or Water heater of this type.

Other objects and advantages of the invention will appear in the further description thereof.

Referring now to the accompanying drawing, forming part of this application, and in which like reference characters indicate like parts:

Figure 1 is a central vertical section through a water heating furnace embodying the invention, and

Figure 2 is a plan view of one of the hol- Ion sections of the furnace.

1 represents the lower body portion of a hollow cylindrical furnace mounted upon a suitable base 2 and carrying a plurality of hollow disk like sections 3, 4, and 5 terminating in the hollow top section 6. These sections 3, 4, 5, and 6 are securely held together by any desired number of through bolts 7, as is common in furnaces of this type.

In the cylindrical chamber 8 of the body portion 1 is mounted a chamber or dome 9 having preferably a concaved bottom 10 therein which is supported upon preferably four upstanding pipes 11, screw threadedly mounted in the openings 12 in the bottom of the section 1. The return pipes for the furnace are illustrated at 13, they communicating with the interior of the body portion 1 at the base thereof, so that part of the water returning in the pipes 13 is diverted in the dome 9 and through same upwardly in the axially disposed pipe 14 to the discharge pipe 15 of the furnace.

A comparatively large axial hole oropening 16 is formed in the bottom of the body section 1 upwardly in which is installed the gas burner 17, the same entering through a similar lateral opening 18 in the base 2, these openings being sufficiently large to permit of ample air circulation for the desired combustion of gas within the furnace.

The sections 3, 4, 5, and 6 are united in the usual way by the water circulating tapered thimbles 19, and the section 3 vided with one arcuately shapedsmoke pas sage .20 spaced about midway. one side and the center thereof,while'the section el-"is also provided with a similar openingbut at the opposite side of the center, so that the prod-- ucts of combustion will be obliged to pass firstthrough the opening 20, thence horizontally through the passageway 21' and upwardly through the opening 22 in the section 4. The section 5 is provided with two like openings 23 and 24, the former being either directly or approximately over the opening 22 in the section 4, thus necessitating the products of combustion to pass prac tically directly through the openings 22 and 23 into the horizontal passageway 25 through which it passes to and through the opening 24, downwardly into the horizontal passage 26 and thence outwardly into the flue 27, the interlocking flanges of the sections 4 and 5 being cut away at this point to form a continuation of the passageway 26 into the discharge flue or chimney 27. In order to prevent the smoke or products of combustion from passing directly from the passageway 22 through the passageway 26 to the chimney I provide a filler block or baffle 28 transverse the furnacebetween the sections -4 and 5, thus causing the circulation as previously described.

Pipes 29 are shown as communicating with the interior of the section 6 of the furnace and the discharge pipe 15 which may .lead to any form of radiating means desired as is obvious.

From the foregoing it is evident that my invention principally resides in the providing of an auxiliary heating dome within a somewhat ordinary furnace, though the particular arrangement of the latter for such installation is novel, and, having thus described my invention, what I claim and desire to secure by Letters Patent, is:

1. The combination wit-h a water heating furnace including a hollow walled main water heating section forming a hollow receptacle and having a horizontally disposed hollow bottom having an axial opening therein, of an auxiliary water heating chamber within the hollow receptacle, a burner within the receptacle between the bottom thereof and the auxiliary chamber, and a supply for said burner entering through said axial opening.

is pro- 1 2. A furnace of the type described comprising an upright, hollow walled, cylindrical, body portion forming a hollow receptacle, carrying a plurality of hollow water heating sections communicating with each other and the body portion, said body por tion having a horizontally disposed hollow bottom with an axial opening therethrough, an upright gas burner installed within the interior of the body portion through said opening, a dome like chamber within the body portion above the gas burner, intake and, discharge pipes for said furnace, intake pipes for said dome communicating with the interior of the body portion, and an axially disposed discharge pipe for said dome passing through the furnace and communicating with the discharge pipes thereof.

3. The combination with a water heating furnace including a main water heating section and a plurality of superposed intercommunicating water heating sections communieating with the main section, of a horizontally disposed hollow water heating bottom for said main section having an axial opening therethrough, an auxiliary water heating chamber suspended within the main section and communicating with the bottom thereof, a burner within the main section between the bottom thereof and the auxiliary chamber, and a supply for said burner entering through said axial opening.

In testimony whereof I hereunto ailix my signature.

WILLIAM D. CRITES.

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