GB190510404A - Improvements in Devices for Vaporizing Liquids. - Google Patents

Abstract

10,404. Hayes, A. May 17. Gas or explosive-vapour engines, carburetting in. The carburettor is described in connexion with internal-combustion engines, but may be employed for other purposes. The casing 1, Fig. 1, has a passage 2 through which heated air or gas or the exhaust from the engine passes. Between the walls of the casing 1 and passage 2 are two helical passages 5, 6, the lower portion of the passage 6 being divided into two parallel passages. These passages together with the heads 7, 8 form a continuous channel for the air, which enters at the opening 11 and leaves by the opening 12. The air is supplied at a pressure of about 10 lb., unless the apparatus is used in connexion with a four-stroke-cycle engine, when no initial pressure will be necessary. In the lower head 8 is a diaphragm 15 containing two valves 18, Fig. 7, round the seatings of which are wells 19 to which oil or water can be supplied by pipes 22 with valves 23. A similar arrangement of diaphragm and valves is placed in the upper head 7, except that the movement of the valves 18<1> is limited by stops as shown. The valves have flanges 25 to prevent back pressure on the liquid in the wells 19, and the valve webs are so shaped as at 26 that the valve slightly rotates on rising, to provide a thin film of liquid. The passage 2 is preferably provided with ribs 32 to aid in the reception of beat from the gases passing through. The other parts of the casting are of sufficient thickness to retain an amount of heat capable of keeping the oil near the " cracking" point. The operation is as follows: The several pipes 22, 22<1> are connected to suitable sources so that all the upper wells receive oil only, and one of the lower wells receives oil and the other water. Assuming the hot gases to be passing through, the air to be carburetted enters by the pipe 13, passes down the chamber 5 to the head 8, raises the valves 18, and passes up the chamber 6 charged with oil and water, which become vaporized. The air and vapours then raise the valves 18<1> in the head 7, become further charged with oil, and leave by the pipe 14. The proportion of oil and water taken up by the air is comparatively slight, and no further admixture of air is needed to make an explosive charge. After leaving by the pipe 14, the gas may be made stable by compression and be used for general purposes. The heaviest oils may be employed, and different kinds of oils may be supplied to the valves in the upper and lower heads or to the valves in the upper head alone. Clogging by deposit of carbon is prevented by the large passages used, and the tendency of the air current to clear the valve-seat.