US1368702A - Fuel-injector - Google Patents

Description

w. CROW AND J. C. SCHAFFER.

FUEL INJECTOR. APPLICATION FILED NOV. 13,1917.

Patented Feb. 15,1921.

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w. cnow AND 1.3. SCHAFFER.

FUEL INJECTOR. APPLICATION FILED NOV- 13,,1917.

Patented Feb. 15,1921.

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ATION FILED Patented Feb. 15,1921.

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WALLEIB, CROW AND JOHN C. SCHAFFER, 015 TIFFIN, UHIQ.

FUEIJ-INJECTGBn Specification of Letters Patent.

Patented W515, rear.

Application filed November 13, 1917. Serial "No. 201,823.

county, Ohio, have invented new and useful Fuel-Injectors, of which the following is a specification.

This invention relates to the feeding of material.

This invention has utility when incorporated in stokers or fuel injectors in the supplying of fuels for combustion, as to furnaces or burners.

Referring to the drawings:

Figure 1 is a front elevation, with parts broken away of an embodiment of the invention as an electric motor driven fuel injector;

Fig. 2 is a fragmentary detail looking down onthe rotary disintegrator device of the injector;

Fig. 3 is a fragmentary section through the injector housing showing the disintegrator device in end elevation and inposition over the impeller device;

Fig. 4 is a fragmentary section through the injector housing showing the disintegrator device in end elevation and in position below the scroll conveyer or delivery device;

Fig. 5 is an end elevation of the injector with parts broken away to show the discharge way in section;

Fig. 6 is an elevation of the injector from the opposite end to the showing in Fig. 5: i

Fig? 7 is a detail of thecontrol features of the projecting steam film control device for the discharge way; and

Fig. 8 is a plan view of the spreader terminus of the discharge way.

The main sustaining pedestal or bracket 1 may have the auxiliary bracket 2 (Fig. 6) carrying the electric motor 3 as a prime mover for the injector. The motor 3 has the shaft 1 (Figs. 1, provided with the gear 5 in mesh with the gear 6 on the shaft 7 parallel with the shaft 4 and carried by the injector housing 8. At its opposite end from the gear 6, the shaft 7 carries the pinion 9 (Figs. 1, 6) in mesh with the gear 10, pro viding a-speed reduction gear train trans mission from the prime mover or motor 3 to the shaft 11 of the injector.

This main or high speed shaft 11 of the injector carries at its end remote from the gear 10, the pinion 12 (Figs. 1, 5) 1n mesh with the gear 13 on the shaft 14 through the housing 8 and parallel to the shaft11. This shaft protrudes through the opposite end of the injector housing 8 (Figs. 1, 6) and carries fast therewith the primary eccentric element 15 having adjustably connected thereon by the pin 16, the secondary eccentric element 1? providing the adjustable eccentric for reciprocating the link 18. This link 18 extends upwardly and carries the pin 19 locked against reciprocation in the slot 20 but having pivotal bearing therewith to effect rocking of the arm 21 loosely mounted on the countershaft 22 carried by the injector housing 8 parallel with the shafts 11, 14. v

This rock arm 21 has fast therewith the arm 23 connected by the pin 24 to the parallel arm 25 on the shaft 22. Also fast with the arm 21 is the arm 26 having pin 27 connecting the arm 26 with the arm 28 loosely mounted on the shaft 22. The pin 27 carries the pawl 29 in engagement with the ratchet wheel 30 fast on" the countershaft 22 and disposed between the arms 23, and the arms 26, 28, which pairs of arms serve as stiffening means for the actuating rock arm 21.

This intermittent grip speed reduction device from shaft 14 to the shaft 22 is dupli cated at theremote end of the shaft 22 (Figs. 1, 5) by the eccentric element 31 adjustably connected by the pin 32 to the secondary ec centric element 33 providing the adjustable eccentric for varying the throw or reciprocation'of the eccentric strap or link 3 1 pivotally connected in the slot 35 of the rock arm 36 having the stiffening arms 37,38, connected by the pin 39, and the stiffening arms 4O, 11, connected by the pin 42. The arms are loosely mounted on the shaft 413, and arms 36. 37, 10, are a rigid unit. The pairs of stiffening arms embrace the ratchet wheel 44 actuated by the pawl 45 carried by the pin 42.

The injector housing 8 includes the coal or more or less subdivided fuel receiving hopper 16 as its upper section.

The lower portion of the hopper 46 has therein the. rotary delivery device or scroll conveyer 47, which through the drive of the double sets of intermittent gear speed reductions, may have a most delicately adjusted and relatively slow feed delivery rate in supplying particles of fuel to the main housing 8 of the injector. This graduated relatively slow fuel delivery falls upon the i toothed wheel 48, having a relatively high rotative speed effecting uniform subdivision 1 of the coarser particles of the coal in working such coal past the opposmg toothed plate 49. The teeth of the plate 49 and Wheel 48 have intermediate grooves, so that the teeth of one travel in the grooves of the other (Fig, 2).

This uniform delivery rate of disintegrated coal passing the disintegrating de- -fiuid supply therefrom vcontrolled by the valve 53 to the auxiliary flow adjusting device or slotted tube 54 rockable by shifting the squared end 55 to determine the sheet flow rate of the projecting steam film through the slot 56 to act as a projecting agent in the discharge way 51- to increase the discharge velocity of the thrown fuel as well as supply elements for tempering the combustion action at the burner or furnace. This high velocity delivery of disintegrated fuel is'effectively further dispersed by the flare spreader '57 at the delivery terminus of the discharge way 51. This widening spreader 57 has ribs 58 in its -fi00r tending to project upwardly some of the forwardly flying particles of fuel, while the grooves therebetween permit the more ready escape of the air or steam for thorough dissemination in the combustion chamber. The great range of adjustments permit accuracy in combustion cont ol in economic fuel consumption.

What is claimed and it is desired .to secure by Letters Patent is:

a 1. A material feeding device embodying a housing providing a feed way, feed rate determining means includinga slow speed first shaft and a high speed second shaft in said housing, said shafts being parallel, feed means actuable by the first shaft for gradually progressing material, a disintegrator on the second shaft of greater material handling capacity than the supply thereto by said feed means, said disintegrator operable for subdividing material from the feed means, an impeller for throwing the disin-' tegratedmaterial as supplied by the disintegrator, fluid projecting means for supplementing the impeller throw of the material from the disintegrator, and a spreader for further dispersing, the impeller thrown material.

2. A fuel feeder embodying delivery conveyer, disintegrating, and impelling devices, and adjustable rotary means for changing the continuous rate of one of 'said'devices as to the other two in changing the capacityfor uniform continuous discharge from the feeder. Y I

3. A fuel feeder embodying axially parallel rotary delivery, disintegrating and impelling devices, and intermittent grip means for adjusting-the continuous feed rate of one device as to the other two in changing the capacity for uniform continuous discharge from the feeder. v

4. A fuel feeder embodying a scroll delivery device, a disintegrating device receiving material from the delivery device, an

' impelling device to which the disintegrating device delivers, said devices being disposed one beside the other, and means for adjust-- ing the continuous operation of one of the devices as to the other two in changing the capacity for uniform continuous discharge from the feeder.

5. A fuel feeder embodying a delivery device, a

peripherally-toothed disintegrating device to which the delivery device su plies material, an impelling device to whic the, disintegrating device supplies material, said devices being simultaneously continuously operable, and relatively adjustable continu ous driving means for one of the devices in changing the capacity for uniform continu ous discharge from the feeder.

6. A fuel feeder embodying a scroll conveyer delivery device, a peripherally toothed disintegrator for receiving material from .the delivery device, a centrifugal impeller receiving material from the disintegrator, and driving means for the device, disintegrator and impeller including means for adjusting the continuous speed of one thereof in changing the capacity for uniform continuous discharge from the feeder.

7 A fuel feeder embodying delivery, disintegrating and impelling devices disposed in succession, and drivin means therefor including means for ad usting independently the continuous operation of, one of said devices in changing the capacity for uniform continuous discharge from the feeder.

8. A fuel feeder embodying a discharge way having a narrow portion merging into a widening open 'top' upwardly inclined spreader terminus, rotary impeller means disposed as to its delivery portion for tangentially projecting fuel along the discharge way, and a supplementing fuel impelling steam supply in said way.

9. A fuel feeder embodying a discharge I divided from the disintegrator means, and

10. Afue1 feed er comprising a housing, a (7 upper, lower and intermediateparallel shafts located in saidhou'sing, there being a way for fuel progress through said housing past said shafts, driving means for the. intermediatesha-ft, fuel disintegrating means in the housing actuated by said shaft, feeding means actualole by the upper shaft for supplying fuel to the disintegrator, driving means ;for the uppershaftfrom the interthe lower shaft for dispersing fuel as subdriving means from the intermediate shaft to the lower shaft. e

tures. mediate shaft, impeller means mounted on 7 ll. A fuel feeder comprising a housing having a Way therethrough for fuel progress, in sequence carried by said housing ad- I ,WALL ER CROW.- I JOHN G. SCHAFFER.

whereof we affix. our signa

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