US2805659A - Air heating furnace and radiator therefor - Google Patents

Description

Sept. 10, 1957 s. c. SALTER 2,805,659

AIR HEATING FURNACE AND RADIATOR THEREFOR Filed March 5, 1954 2 Sheets-Sheet 1 INVENTOR. SA/r/e C. 5a/fel' 147'7ORNEX Sept. 10, 1957 s. c. sALjrER 2,805,659

AIR HEATING FURNACE AND RADIATOR THEREFOR Filed March 5, 1954 2 Sheets-Sheet 2 INVENTORL: s/ r/p c. awv

United States Patent AIR HEATING FURNACE AND RADIATOR THEREFOR Shirley C. Salter, Kalamazoo, Mich., assignor to Kalamazoo Furnace & Appliance Manufacturing Company, Kalamazoo, Mich.

Application'March 5, 1954, Serial No. 414,399 2 Claims. (Cl. 126-102) This invention relates to an air heating furnace and radiator therefor. The invention relates particularly to an air heating furnace commonly designated as a hot air furnace and heating exchange radiator.

The main objects of this invention are:

First, to provide a hot air furnace adapted for use with either gas or liquid fuel and one which is highly efiicient in proportion to its size and the amount of fuel consumed.

Sec ond, to provide an air heating furnace which may be quickly adapted t o the burning of liquid fuel or gas.

Third, to provide in an air heating apparatus an improved radiator or heat exchange unit which is highly efficient and at the same time does not objectionably impedethe flow. of. gases therethrough. Y

Objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a front perspective view of a hot air furnace or heater embodying my invention, parts being broken away to show structural details.

Fig. 2 is a front perspective view of the combustion chamber and radiator removed from the casing.

Fig. 3 is a fragmentary horizontal section on a line corresponding to line 3-3 of Fig. 4 with a fragment of the casing being illustrated to show the relation of the discharge flue thereto.

Fig. 4 is a fragmentary vertical section on a line corresponding to line 4-4 of Fig. 3.

Fig. 5 is a fragmentary view in vertical section on a line corresponding to line 55 of Fig. 3.

The embodiment of my invention illustrated comprises a casing 1 of rectangular horizontal section and having an air inlet opening 2 and an air discharge opening 3 at the top. The dome or other connection for hot air conduits or the like is not illustrated as they form no part of this invention. In certain installations a blower and filter is associated with the inlet but these are not illustrated as they form no part of this invention.

The combustion chamber 4 is of general cylindrical section and is disposed in upright position. The combustion chamber is provided with a combustion unit such as the burner indicated conventionally at 5 which may be either a gas or liquid fuel burner. Where liquid fuel is used a suitable fuel feed means is provided, as indicated at 6.

The combustion chamber is provided with a door frame 7 having a closure plate 8 removably secured thereto to facilitate the installation of the combustion unit. However, the details of this form no part of my present invention and therefore are not further described.

The radiator or heat exchange unit designated generally by the numeral 9 is of polygonal horizontal section, desirably octagonal as illustrated. This radiator is formed of a plurality of angularly disposed complementary sections 10 having flat uniformly spaced or parallel side walls. The radiator is relatively narrow as compared to its height .which desirably is approximately onehalf the height of the combustion chamber.

The radiator is disposed in radially spaced relation to the combustion chamber and also to the casing .so that air passing upwardly through the casing may circulate around the radiator.

The upper end, of the combustion chamber is connected to one of the radiator sections by a conduit 11 opening centrally thereto. This, in the embodiment illustrated, is the rear section.

The diametrically opposed front section of the front section of the radiator has a discharge flue member 12 connected thereto .and extending through the casing 1 as is clearly shown in Figs. 3 and 4.

A clean-out opening 13 is provided in the outer wall of the radiator section to which the discharge 12 is connected. This opening is normally closed by the removable closure plate 14. This enables the cleaning of the radiator from the front of the heater which is desirable as these heaters are designed to permit their being installed, if necessary to do so, in confined spaces such as are frequently found in modern homes of small size.

The casing is provided with a removable portion 15 affording access to the'clean-out. The burner motor is installed in a chamber 11 provided therefor in the casing, this being closed by the removable panel 17 having a screen portion 18 for admitting air to the motor.

As the gases pass from-one radiator section to a successive section the angular relation thereof creates a turbulence in the gases owing to their impinging discharge against the outer walls of the section as the gases enter the succeeding section. This turbulence causes the gases to impinge or contact both the inner and outer walls during their passage through their section.

As is illustrated, I preferably provide certain of the sections with vertically disposed bafiies 19 and 20, the baffle 19 being mounted on the inner wall of one section and the baffle 20 on the outer wall of the succeeding section. The inner edges 21 of these baflles are spaced from the Wall opposite to the wall to which they are attached so that the gases may flow past the same but in doing so are directed into impinging relation to the walls opposite the bafiles. This further increases the efficiency of the unit which is however relatively efiicient owing to the angular relation of the sections and the large wall area resulting from the shape of the radiator.

I have mentioned that the heater is well adapted for use with liquid fuel and with gas. When used with the gas burner it is desirable to provide the baffle 23 for the discharge flue member 12. This bafiie is of segmental shape and is detachably mounted on the bracket 24 projecting upwardly from the bottom of the flue member 12., the baffle being secured by the bolt 25.

A closure ring 26 is provided for the joint between the casing wall and the flue member 12. This is provided with ears 27 which receive the clamping screw 28.

The combustion chamber is provided with supporting feet 29 and 313. The radiator is mounted on the combustion chamber by brackets 31 and the connecting flue 11.

I have illustrated and described my invention in a highly practical embodiment thereof. I have not attempted to illustrate or describe various modifications and adaptations to meet different conditions such as installing as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a structure of the class described, the combination with a hot air casing having an air inlet and an air outlet, of an upright combustion chamber disposed within said casing and provided with a combustion unit, a radiator surrounding and radially spaced from said combustion chamber and spaced from said casing to permit circulation of air around the radiator, said radiator being of polygonal horizontal section and of a height approximately one half the height of the combustion chamber and comprising a plurality of complementary sections disposed in angular relation to each other and having fiat uniformly spaced inner and outer walls, the flat inner and outer walls of adjacent sections being joined to each other whereby the combustion gases passing from the sections impinge directly onto the outer walls ofsucceeding sections, said combustion chamber having a discharge connection opening centrally to one of said radiator sections through the inner wall of said section, an outlet flue member connected centrally to the diametrically opposite section of the radiator through the outer wall of said section and extending through the casing, the radial dimension of the sectionsbeing relatively small as compared to their vertical dimension, vertically disposed baffles disposed centrally in certain of the adjacent sections, the bafile of one such section projecting from the inner wall thereof and the bafile of the adjacent section projecting from the outer wall thereof with the vertical edges of the bafiies spaced from the opposite walls.

2. In a structure of the class described, the combination with a hot air casing having an air inlet and an air outlet therein, of a radiator of polygonal horizontal section comprising at least six complementary sections disposed in angular relation to each other and having spaced inner and outer walls, the outer walls of adjacent sections being joined to each other, said radiator having inlet and outlet openings for combustiongases, the radial dimension of the sections being relatively small as compared to their vertical dimension, and vertically disposed bafiles disposed centrally in certain of the adjacent sections, the baille of one such section projecting from the inner wall thereof and the baffie of the adjacent section projecting from the outer wall thereof with the vertical edges of the bafiles spaced from the opposite walls.

References Cited in the file of this patent UNITED STATES PATENTS 85,335 Siddons Dec. 29, 1868 139,812 Porter et a1 June 10, 1873 350,337 Bache Oct. 5, 1886 371,108 Trecy Oct, 4, 1887 613,216 Schwab Oct. 25, 1898 1,576,020 Ahl Mar. 9, 1926 1,721,620 Firestone July 23, 1929 1,768,684 Greenberg July 1, 1930 1,941,496 Schleh Jan. 2, 1934 1,944,497 Crick Jan. 23, 1934 2,016,739 Bouton Oct. 8, 1935 2,172,399 Mueller Sept. 12, 1939 2,357,523 Kimberley Sept. 5, 1944 2,543,201 Rifley Feb. 27, 1951 2,683,024 Butler et al July 6, 1954 FOREIGN PATENTS 389,459 France June 29, 1908 766,665 France Apr. 16, 1934

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