US1147734A

US1147734A - Liquid-heating apparatus.

Info

Publication number: US1147734A
Application number: US77703413A
Authority: US
Inventors: Hugo Junkers
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-07-02
Filing date: 1913-07-02
Publication date: 1915-07-27
Anticipated expiration: 1932-07-27

Description

H. JUNKERS. LIQUID HEATING APPARATUS. APPLICATION, FILED JULY 2. 1913.

1,, 14mm Patented July 27, 1915.

nueo runners, on Ix-LA-cHArnLLn, GERMANY. LIQUID-HEATING- APPARATUS.

Mamet.

Specification of Letters Patent.

Patented July 2?, 1915.

Application filed July 2,1918. Serial No. 777,084..

' To all whom .it may concern:

upon the devices the heater. Also,

- cook or faucet. consists of a burner,

Be it known that I, HUGO JUNKnRs, a citizen of the German Empire, residing at N o. 68 Bismarckstrasse, Aix-la-Chapelle, in the Kingdom of Prussia, Empire of Germany, haveinvented certain new and useful Improvements in and Relating to Liquid-Heats mg Apparatus; and I do hereby declare the following to be a full, clear, and exact de scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to liquid heaters for use in households adapted to be supported on a wall above the floor, and to supply heated Water when the flow of water through theheater is permitted by opening a suitable Such a liquid heater usually acombustion chamber extending upwardly from the burner, a liquid chamber surrounding the combustion chamber, and pipes leading to and from the liquid chamber, the whole being arranged to be mounted upon a wall a distance above the floor. The opening of a faucet permits water to flow into, through and from the water chamber of the heater, and the water is heated during its passage through the heater. Such a household heater should possess ample strength to guard against external indentation and to withstand the internal pressure without leakage, its construction should require the minimum amount of material, it should have a large heating capacity, it should be so constructed as to reduce radiation of heat as much as possible, and it should be of minimum size and weight. Recognition of these requirements has led to the construction of heaters of this character in a circular form. This shape, however, is objectionable in that when the heater is mounted upon a Wall the center of gravity of the heater is'located at an objectionablygreat distance from the that there 1s a substantial leverage employed for suspending the heater so constructed occupies more space than is desirable. Because of the disadvantages characteristic of such circular heaters, to make household heaters in-a rectangular form. Such a rectangular heater, however, would have a smaller efficiency compared to its size, and would require the use of internal stiffening or bracing devices. It is to be noted, also,'that with both the circular and wall, so

swing latera have found that by the employment of a I it has been proposed the rectangular forms of household heaters adapted to be mounted upon always the possibility that'the heater will 1y on its suspension device.

special construction in household heaters of the character mentioned, the objectionable characteristics of both circular and rectangular heaters may be eliminated and their advantages together with not ossesse by either of the other two devices. P d The improved construction involves the prov1s1on of a heater of substantially greater width than depth, having .the rear wall thereof concave and having the corners at the lateral edges of the rear and front walls rounded. In this way, the center of gravity of the heater is brought in close to the wall, though the the heater remains the same, lateral swinging of the heater is prevented by contact of the edge portions thereof with the wall, radiation of heat to the wall is reduced to a negligible amount because the area of con-- size and capacity of a wall, there is v I have illustrated certain embodiments of my invention in th ings, in which- Figure l is a front view of the heater; 'Fig'. 2 is a vertical section thereof; Figs. 3, 4, 5 and 6 are horizontal cross-sections lllustrating three forms in which the invention may be embodied, Fig. 7 is a sectional detail view illustrating a further modification; and Fig. is a perspective view broken away in part lllustrating another modified constructlon.

Referring to the drawings, the heater is shown in elevation in Fig. 1. At the bottom thereof is a burner supplied with gas through a suitable conduit. Directly over the burner 4 is a vertically disposed chamber through which the heated air rises. This chamber is completely inclosed by a water chamber 1 and pipes 2 and 3 leading the water to and from the water chamber 1. Within the chamber for the heated air any suitable means may be provided for facilitating the transmission of heat rising from the burner to the interior wall of the water chamber 1 and the liquid therein. In Fig.

e accompanying draw g v g 1 1,147,734.

2 a hood is shown at 5 mounted within the upper end of the chamber above the burner 4, this being constructed to provide passages 6 adjacent to the walls of the water chamber through which the heated air must pass.

The relation of the width of the heater to its depth and the shape given to the walls ,of the heater are of great importance. As

will be seen from Figs. 1 and 2 the heater is of substantially greater width than depth,

' the width being preferably about double or waterchamber '16, pieces of thin sheet metal folded'back a'nd'forth upon themselves are provided, as shown at 17 to facilitate the transmission of heat to the water chamber.

As shown in Fig. 4, the front wall of the heater is convex and the rear wall is con-f cave, the heater is ofsubstantially greateri width than depth, and the corners at the lat-f eral edges of the front and rear Walls are rounded. The concavity of the rear wall of the heater provides a space 10 between the rear wall and the surface of the wall 1 1 on which the heater is mounted. This space may be occupied in part by pipes 15 supplying gas or water to the heater. In Fig. 5 the construction is similar in many respects to that of Fig. I, the cross-sectional shape of the heater being slightly different. In Fig. 6 a construction closely similar 'to that shown in Fig. I is illustrated, the exterior wall of the water chamber being flexed toincrease its area.

I n the detail view of Fig. 7, both the interior and the exterior walls of the water chamber 21 are shown as fluted, and the interior .wall has a plurality of folded sheet metal strips secured thereto.

In. Fig. 8 a construction of the water chamber is shown differing somewhat from that'shown in the other figures. Instead of the water chamber being a narrow chamber conforming to the shape of the heater, it is shown in Fig. 8 as consisting of a plurality of parallel pipes 24 extending between upper and lower endless pipes, the connections to and from the upper and lower pipes being shown at 25 and 26. The water chamber thus formed surrounds a wall 23 of sheet metal forming a chamber at the bottom of which the burner 22 is located.

In 'all of the forms of the heater herein illustrated, it will be seen that the heater is of substantially greater width than depth.

As a result of this, when the heater is mounted upon a wall, as is indicated 1n Figs. 2 and 4, the center of gravity of the heater lies near to the wall, much closer than it would be in the case of a heater of 79 similar capacity of. round or square crosssection. Because of this, the strain on the suspension means for the heater is greatly reduced. Also, in all of the forms of heaters illustrated, the rear wall is made concave, so that. when the heater is mounted upon awall it is in contact with the wall over avery small area, as a result of which transmission of heat to the wall takes place to only a very small extent. Also, this shape 80 of the rear wall results in contact of the heater with the wall at two points ad acent tothe side edges of the heater, so that swinging of the heater on its suspension de- ]vice is precluded. Furthermore, in all of the forms of heaters illustrated, the corners at the lateral edges of the front and rear walls are rounded to such extent as to permit of forming thevexterior wall of the heater from a single piece of sheet metal by bending the sheet to the shape desired for the cross-section of the heater, and the use of a skeleton. frame or other bracing device within the water chamber is rendered unnecessary. 9 5

I claim:

A household heater, comprising the com- -'bination of a burner,-a combustion chamber 1 extending upward therefrom formed by a vertically disposed, wall which is endless in a horizontal direction, a water chamber completely surrounding the combustion chamber, and pipes for leading water to and from the water chamber, said heater being of substantially greater width than depth,

the rear wall thereof being concave and the corners of the heater at the lateral edges of the rear and front Wallsthereof being rounded; substantially as described.

In testimony thereof I have signed my name to this specification in the presence of I two subscribing witnesses,

HUGO J UN'KERS. Witnesses: 7 4

EMI L WERGIEN, HERMANN FISCHER.