US1017750A - Mixer for gaseous fuel. - Google Patents

Description

G. T. HANCHETT.

MIXER FOR GASEOUS FUEL.

APPLIQATIUN FILED JULY 16, 190s.

Patented Feb. 20, 1912 GEORGE'T. HANCHETT, OF HACKENSACK, NEW JERSEY.

MIXER FOR GASEOUS FUEL.

Specification of Letters Patent. 4 Patented Fel). 20, 1912.

application filed July 1s, 190s. serial No. 443,748.

To all whom 'it may concern:

Be it known that I, Gaonon T. HaNorlETT,

a citizen of the United States, residing at' improved. carbureter which more thoroughly carburets, acts so that the liquid fuel will be a more perfect gas, be more prfectly mingled; with air, permits the running of the engine cylinder at a lower telnperature, permits the use of greater' compression in the engine cylinder', and 1s more perfect mechanically.

The following is a description of my. lnvention, reference being had'to the accompanying drawings, in which- Figure 'l represents a vertical section of the carbureter.l Fig. 2 is a horizontal sect-ion of the same, with the coil removed, on the line -m Fig. 1.

vReferring more particularly to the drawings, A. is the inlet pipe for the liquid fuel, such, for instance, as gasolene.

B is a. chamber for collecting any water that may pass in with the fuel.

C is a pet cock to draw olf the water when necessary.

D is an annular chamber-surrounding the chamber E. ThechamberE is connected to a heat-ing chamber E. In the chamber D is an annular float vF also surrounding the chamber E. This float is pivoted at Gr and connected to an arm' H, which actuates a valve I controlling the flow of liquid fuel through the orifice z', so as to maintain it at a constant level. The annular 'float forms a rigid construction with a long lever arm insuring a powerful action on'the valve I. From the chamber D the fuel ilowsthrough a passage J to a needle valve Kpa'st whose point it -flows to the chamber L. Across this chamber L, passing-through both wallsl vthereof and into the chamber E, is an air passage M, At the bottom ofthe chamber E is -an inlet N controlled by the adjustable spring seated valve O. Incthe chamber E is a heating coil P connected at one end to the inlet pipe P, and at-the other end to the discharge pipe P2. Hot water from the water jacket is passed through this coil and thence, if in a motor boat, discharged at any convenientpoint, or if in an automobile, to a radiator. The upper chamber l is provided with an outlet Q in which is a throttle R actuated by an arm S, and locked, if desired, by a set screw T.

The heating coil P in the chamber E', as shown in Fig. 1, is a plurality of parallel coils each lhaving a plurality of turns so that the coil as a Whole has a plurality of turns in each of several substantially parallel planes and surrounding a common axis interspersed with wire netting P3 P3 P3, secured directly thereto so as to conduct heat therefrom. The vwire -nettings constitute screens which provide enlarged lfeated surfaces for the mixed fuel and air to impinge against and also ret-ard the passage of the air and fuel through the chamber, causing the currents to diverge so that contact is made with all the heated portions of both the coil and the screens. The coil is preferably of copper and the netting of brass, on account of their durability and heat conductivity. l

In the. operation of the apparatus, as the engine starts, air is drawn in through' the opening M-over the fuel -in the ordinary manner, the fuel being atomized at the needle valve orifice. As the engine speeds up, the water becomes heatedl and the coil P and netting P3 forms a heated surface upon which the fuel .impinges The/'tortuous passages which the air and gas must follow mixes them thoroughly. The impinging of the fuel 'upon the heated surfaces of the coil and netting vaporizes the fuel but does not greatly raise the temperature of the mix' ture. The air and gas in the chamber E are thoroughly mixed and the fuel is thoroughly vaporized so that it passes into the combustion cylinder in proper condition for immediate use. A.For this reason the heat of the combustion chamber is not` necessary for completing the vaporizin and the combustion chamber can there ore be run' much cooler. The walls of the combustion cha-m ber have heretofore been relied upon to vaporize the fuel, but have done it unsatisfactorilybecause so small a part is brought into direct contact therewith. Since my fuel is not heated until after it is mixed with air, there is no danger of vaporizing before it passes the needle valve. Since the air is not heated except as it passes through the cllamber E, it does not become hot, the fuel being a better conductor of heat and the heat units given oil' b v the coil and netting. being almost entirely taken up in' vaporizing the fuel. The air, therefore, does not expand as it would if heated before being mixed with the fuel, and consequently does, not re duce the ellicienc the case if heated air were used. As. the engine speeds up, air is also drawn in through the inlets N.' This air meets the air 4coming in through the port N, to ether with the fuel, at an angle, so that t e tvvo currents become thoroughly combined and mixed. As soon as the coil P becomesheated, the eiliciency of the engine rises very much, and since that is the normal condition, thev elfi ciency in normal running is very high. This is brolght about by two factors viz: the comple e mixing of the two, and the vaporization of the fuel. The perfect control ed? the liquid fuel suppl contributes incidentally tothe improve action of the carbureter as a whole.

My invention permits of various modifications of the apparatus shown and described, and has various advantages such as will be evident to those skilled in the art.

'What I claim is:

A1; In a device of the character described,

of the engine, as would be' thecombinatin of a carbureter casing having a chamber therein', a heating 1coil within sald chamber against which mixed air and fuel may impinge, said coil having a plurality of turns in each of several substantially parallel planes and surrounding a common axis, and entrance and exit ports,

Vsaid coil lying in the path between said envtrance and exit ports.

v.water from. a' Water jacket and against which the air and fuel impinge, and means interspersed' between turns in the coil With in the chamber for retarding the passage of the fuel and air therethrough.

GEORGE T. HANCHETT.

Witnesses:

' EDGAR A.v TREDwnLL,

R. W. PAnvREL.

Copies 0f nthis patent may he obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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