DE40447C - Boiler for low-pressure steam heating with a device for regulating combustion - Google Patents

Description

IMPERIAL.

PATENT OFFICE.

PATENT LETTERING

CLASS 36: Heating system!?.

'"Patented in the German Empire on July 16, 1886.

The present invention is a Central heating furnace for low-pressure steam heating, in which the combustion chamber is separated from the ash chamber is so separated that air only through the air inlet duct or through the open one Fire door can get to the fuel, while opening the door of the ash room any air entering the stove can enter the fume cupboard without touching the fire. With this facility it is possible to start the fire by simply opening the ash door to suppress, and since this opening when the steam tension in the boiler is too high, the a holding down of the fire is required, is automatically effected, then the system forms one Heating furnace in which the development of a vapor tension which exceeds a given level, is excluded.

Fig. Ι represents the furnace in the front view and

Fig. 2 shows in cross section.

The steam generator A, Fig. 2, is built similar to a filling furnace, rests on rails and shows a transversely continuous .Fire tube G, which mediates the passage of air from the channel F to the H hood. Kindling fire and cleaning of the furnace slag and ashes is carried out -by the fire tube G opposite door as it is effected by, that is, the slag and ash constituents - backward herausstöfst from the fire tube G, it DAF in under the Fall down the ash chamber in the boiler A.

The air supply to the hearth through channel F will weep through regulator, e.g. B.

by that of patent no. 17956, regulated while a special overpressure regulator at. any impermissible vapor tension occurring in the boiler due to the opening of the Ash door and the thereby destroyed pulling effect in the stove suppresses the fire or. brings to extinction.

The excess pressure regulator shows the following inputs, direction: - In the Kessel'reicht to the lowest permissible water level in the stand pipe, the branch E, Figure 1, flows into the vessel, i. E. Vessel D rests on the arm h of a lever i, the other arm h 'of which can influence an angle lever b' b , which has its pivot point in α on the door C of the ash room and with the nose c of its arm b into a hook d of the fire door B engages. The latter is thus kept closed at the same time by locking the ash door C , but is also equipped with a special locking pawl so that it can remain closed when the door C is opened. After lifting the lever arm b ' , the ThUrC opens automatically by the influence of a spring fg.

If the voltage in the boiler exceeds the permissible level, the water comes out of the standpipe R into the branch E and flows into the vessel D, Fig. 1, filling the same more and more.

If the vessel has reached a certain weight through the inflowing water, it sinks, thereby lifting the arm /? ', With this the kxmb' , and at the same time the nose c of the arm b from its hook d the door B is pulled, so

the force of the spring comes into play and door C is opened wide. The air now enters the stove and flows directly into the vent H, avoiding the fireplace.

Since the resistance which the flowing for 'the deductions H air is on the way from F by the fireplace, is much gröfser than the resistance in the open Aschenthür, the inflow hears of air at F with open Aschenthür immediately; so that the fire in the fire tube sinks and gradually goes out. This new and peculiar effect of the counter-draft can now be achieved if the fireplace is not touched by the draft and therefore cannot be achieved when using a grate in which the air from the ash falls through the fuel.

The opening of door C of the ash case does not promote the combustion here, but destroys it and thus achieves an effect which is exactly the opposite of the known one.

The door C of ash fall jumps after releasing the lever arm b, as mentioned, quite or very wide, so that the heater BEZW _v the guards immediately sees, that the door is open at all, so one irregularity exists. With certain proportions of the opening of the door to the outlet, even a very slight opening of the door can cancel the draft to the fireplace, and with it the burning. The slight opening of the door can easily be overlooked by the worker; the latter can remain open and then unintentionally extinguish the fire completely.

The two doors are opened by lever b , similar to that in patent specification no. 13773 ^ e wrote, coupled to each other, and door C can be opened alone, but not door B alone. This arrangement, as in patent no. 13773 avoided unintentional intensification of the combustion when stoking or cleaning the fire.

If the overpressure regulator has opened the counter-pull by collecting the overpressed water by sinking down with the lever arm h , the drain valve k has also opened in some way (e.g. by pushing the valve rod against a base I) . The water flows out of the GeMs D and the latter becomes easier and is lifted again by the balanced lever arm h '.

After the ash trap door C has been closed , lever arm b ' passes over lever arm h', nose e of lever b latches into d and the apparatus is operational again.

Claims (1)

Patent claim: On a furnace for holding down the fire with the ash trap door open, the angle lever b b ' mounted on the ash trap door C , which couples the fire door to the ash trap door and can be triggered by means of a balanced lever hh from an overflow vessel D with valve k , whereupon the spring ^ / causes the opening of door C , and the walling of the boiler A in such a way that it rests freely within this walling on rails and there is no separation of the ash fall from the mouth of the fire tube for the convenience and short-term stoking of the fire. For this purpose ι sheet of drawings.