US1945139A - Automatic electric hot water heating system - Google Patents

Description

Jan. 390, 1934. E H, DucHEMIN 1,945,139I

AUTOMATIC ELEcTRIc HoT WATER HEATINGSTSTEM Filed oct. 27, 195o Patented Jan. 30, 1934 AUTOBIATIC ELECTRIC HOT WATER HEATING SYSTEM Edmond H. du Chemin, Denver, Colo.

Application October 27, 1980. Serial No. 491,435

1 Claim.

This invention relates to improvements in heating systems of the type employed in connection with the heating of dwellings and other buildings, and has reference more particularly to an electrically heated hot water heating system and to the radiator used in connection therewith.

The heating of buildings, and especially dwellings, by means of coal is meeting with increased disfavor and in many places gas is being substituted, which although more convenient than coal has several objectionable features which will not be mentioned herein.

With the high efficiency of present day generators, transmission lines and transformers, electricity can be transmitted at a very small loss and can be generated very cheaply by means of coal, Where the generating stations are located at the coal mines and by water power and engines operating on natural gas.

It is evident that the most satisfactory Way of heating is by means of electricity as this is entirely free from dust and dirt, and has no disagreeable odors such as possessed by gas, and it 25. is also free from danger due to explosions or poisoning, which quite frequently occur where gas is employed.

It is the object of this invention to produce an improved heating system of the hot water type V in which the water is heated by means of electric heaters located at the radiators and independently controlled, so that each room may be maintained at any desired temperature independently of the temperature of other parts oi the building.

The present invention can be most clearly explained and will be most readily understood when reference ls had to the accompanying drawing in which the preferred embodiment thereof has been illustrated, and in which:

Fig. 1 shows a transverse section through a building equipped with my improved hot water heating system;

Fig. 2 is a section through the lower part of one of the improved radiators employed in this 4.5L system, and

Fig. 3 is a diagram showing the wiring connections to the electric heating element.

In the drawing reference numeral 1 represents a floor of a building, and numeral 2 represents A the side walls, while the roof has been indicated by reference numeral 3. For the purpose of illustration the building has been shown as having two rooms A and B and an attic space C. Rooms A and B are separated by a partition 4, and the ceilings of these rooms have been indicated by referenoe numeral 5. Located within each room is a hot water radiator 6. This radiator is of peculiar construction, which has been illustrated in Fig.

2, from which it will be seen that it consists of a plurality oi sections 'l that are hollow, and 60 which are connected at their lower ends by watertight joints 8. The connections between adjacent sections have large openings 9, through whichv a copper or brass pipe 10 extends. The ends of pipe 10 are provided with screw caps 11 that en- 65 gage the end sections and hold the radiator sections in assembled relation. Located within the pipe l0 is an electric heating element comprising a central supporting bar 12 that carries a large Y, number of spaced circular insulators 13. These Y insulators may be made from porcelain or any other refractory insulating material, and are provided with a number of holes through which the resistance wire 14 extends. At one end of pipe 10, four binding posts 15 have been provided. 75 The resistance wire is divided into three sections as shown in Fig. 3, and one of the binding posts is connected to all of the sections and to one pole oi the electric supply, which in the diagram shown in Fig. 3 has been designated as a battery 80 16. Conductors 17 extend from the other three binding posts to a switch 18. This switch has a movable switch member 19 that is pivoted at 20 and so arranged that it can make contact between a single one or any number of the contacts g5 2l. A conductor 22 extends from the movable Contact 19 to an automatic thermostatically controlled switch 23. If the temperature exceeds a predetermined value, switch 23 will automatically open, thereby cutting oif the current to the 910" electric heater. By manual adjustment of switches 18, either one, two or three of the sections of the heater can be connected in the circuit so as to adjust the effectiveness of the heater to conform to the requirements. In cold weather e" it may be necessary to have all three of the heater sections in operation, while on mild days one may be sufficient, and in this way a large saving of current can be effected.

The specic construction of the heating elements forms no part of this invention, as any suitable electric heating element now on the market can be employed.

The radiator used with this system must be constructed in a different manner than the ordi- 105 nary radiators to this extent, that a horizontal compartment or tank, represented by openings 9 in Fig. 2, must be provided at the bottom of the radiator and the radiator sections or columns must have the lower end connected with 11:0

this tank. A tubular member represented by pipe 10 extends through the tank and is entirely surrounded by water. By locating the resistance coil or heating element within this pipe, there is no loss of heat as all of the heat must pass through the water and is therefore absorbed by the water. Radiators that are suitable for this system can, of course, be constructed in specifically different ways, and the one illustrated is intended merely to show the general arrangement.

In the drawing an expansion tank 24 has been shown. This may be located in the attic and connected to the water supply by means of a pipe 25. This pipe is controlled by valve 26, and in addition to this the expansion tank may have a float valve for the control of the admission of water, although this is not an essential feature. Tank 24 is provided with an overflow pipe 27 that is connected to the drain pipe 28 located in the basement or underneath the lowermost of the radiators. Each radiator is connected with the drain pipe by means of pipes 29 that are controlled by valves 30. Each radiator is also connected with the expansion tank by means of a pipe 31. The pipe 31 has branch pipes 32 extending from it to the radiators, and these are provided with valves 33 that control the flow of water to the radiators. When the radiators are to be drained, valves 30 and 33 are opened thereby permitting all of the water in the system to be drained into the sewer.

Having thus described the invention what is claimed as new is:

An electric radiator of the hot water type co1nprising a plurality of separate radiator sections provided near their lower ends with oppositely extending tubular projections, the projection on one side having an internal rabbet and the one on the other side having an external rabbet,

`whereby a cylindrical flange is formed that fits into the internal rabbet, the end sections of each radiator assembly having their end surfaces provided with openings that are concentric with the openings in the tubular projections, but of smaller diameter, a pipe extending through all of the sections in the assembly, the diameter' of the pipe being substantially the same as that of the openings in the end surfaces of the end sections, the ends of the pipe being provided with threads and caps, or the like, secured to the threaded ends of the pipe and engaging the end walls of the end sections to produce a force for holding the sections'in assembled relation, the interior of the pipe serving as a chamber for the reception of an electric heater.

EDMOND H. DU CHEMIN.

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