US3127091A - Suction pump means having trans- - Google Patents

Description

March 31, 1964 G. s. MITTELSTAEDT 3,127,091

SUCTION PUMP MEANS HAVING TRANSVERSELY DIVIDED SUCTION TUBES Filed Feb. 26, 1962 --3 FIG.I l6

United States Patent f'ce 3,127,091 SUCTION PUMP MEANS HAVING TRANS- VERSELY DIVIDED SUCTION TUBES Georg S. Mittelstaedt, 27 4 73rd St., Brooklyn, N.Y. Filed Feb. 26, 1962, Ser. No. 175,595 9 Claims. (Cl. 230-92) This invention relates to suction means, including suction pumps, and relates particularly to the specific construction of the suction device, that is, the conduit or flow tube and the suction tube associated therewith. The device is capable of independent use, separate and apart from any specific use or any specific source of fluid through the conduit, and may be used wherever suction devices are employed. For instance, the suction device may be used in connection with jet engines and other internal combustion devices, it may be used in combination with any intake or exhaust means, with spray, draining, and draft devices, with aeration devices and other combining devices, to drive turbines or other apparatus, and wherever suction flow is utilized.

Objects of this invention are: to provide a suction pump in connection with fluid flow, to increase the efliciency of suction devices, to improve suction tubes, to improve suction pumps, to produce suction flow, to augment suction flow, to augment flow in the conduit downstream of the suction pump, to increase the effective total momentum of fluid, to increase the effective total momentum of fluid discharged in unit time, to increase thrust, to increase power, to utilize the suction flow to secure a cooling effect, to drive a turbine, to provide a cool running turbine, simplicity of construction, installation, and maintenance, and low cost.

These and other objects will become apparent in the description below, in which characters of reference refer to like-named parts in the drawing.

The drawing shows sectional views illustrating the invention, but the invention is not limited to the particular examples illustrated.

FIGURE 1 is a longitudinal sectional view of a conduit and a transversely partitioned suction tube extending across the conduit, showing an embodiment of this invention.

FIGURE 2 is similar to FIGURE 1, but the transverse partition extends beyond the peripheral line of the suction tube.

FIGURE 3 is a transverse sectional View of the device taken on the line 3-3 of FIGURE 1.

FIGURE 4 is a transverse sectional view taken on the line 4-4 of FIGURE 2.

Referring in detail to the drawing, the numeral indicates a conduit or flow tube, and 11 indicates a suction tube extending across the flow tube at right angles to the axis thereof. The suction tube is open at both ends and has a peripheral or perimetric opening 13. The unmeral 12 indicates welds or other fastening means, and the arrows in the tubes indicate the direction of flow. The flow tube and suction tube are the straight line wall type. The suction tube diverges and then converges transversally, and a constriction of flow is produced which increases to the diameter of the suction tube, and then decreases. Velocity increases and decreases in proportion to constriction of flow. The suction opening 13 preferably begins immediately downstream of the greatest constriction of flow and extends toward the rear portion of the suction tube. A partition 14 is provided across the structure of the suction tube on a level with the suction opening 13, so as to form two channels 16 and 17 leading to opposite ends of the suction tube. Since pressure is reduced accompanying increase of velocity, 21 low pressure area is produced, and air or other fluid is drawn through both ends of the suction tube into the flow tube.

3,127,091 Patented Mar. 31, 1964 The broken line 15 indicates an extension of the partition 14, extending rearward to the peripheral line of the suction tube, thereby increasing the suction effect.

FIGURE 3 is a transverse view of the described device, taken on the line 3-3 of FIGURE 1.

In FIGURE 2, the broken line 20 indicates the extension of the transverse partition beyond the peripheral line of the suction tube. This reduces turbulence at the suction opening and further increases the suction effect. This extension 20 may also spread sideways toward or to the wall of the flow tube, as indicated in FIGURE 4.

FIGURE 4 is a transverse view of the device, taken on the line 44 of FIGURE 2.

It must be noted that tubes of any kind may be run from the described suction openings to opposite ends of the suction tube.

The suction opening 13 may be formed by cutting away or otherwise eliminating all or part of the wall of the suction tube downstream of the greatest constriction of flow. The suction tube may also be cast or otherwise made with corresponding openings. The openings may be of any character, shape, or form, and in the text and claims, by openmg is also meant plural openings, including slits, perforations, pores, or any other type opening. The wall portion of the suction tube toward the how may be streamlined, or be equipped with a fairing, and this is part of this invention.

The suction tube may be fastened to the conduit by any suitable means such as welding, soldering, bolting, cementing, screwing etc; or a fitting may be made comprising a representative portion of the conduit and the described suction tube extending thereinto, the fitting being inserted in the conduit or attached thereto by any suit able means. Such means include unions or other coupling means, cementing, soldering, welding etc. The broken lines 18 and 19 in FIGURE 1 indicate the insertion of the fitting in the conduit.

Examples of practical applications of the invention are: (l) drainage pumps, where the defined suction tube communicates with useless water; (2) aeration devices, where the defined suction tube communicates with air or other gas; (3) mixing devices, where the defined suction tube tube communicates with selective mixing fluid; (4) spray devices, where the suction means and a suitable nozzle are disposed at the end of the hose or conduit, and where the defined suction tube communicates with fluid material used in the spray; (5) exhaust pumps for piston type combustion engines, Where the device is inserted in the exhaust line or attached to the end of the tail pipe, and Where the defined suction tube communicates with air; (6) suction pumps for jet engines, where the defined suction tube may extend (:1) across the air intake duct, (b) across the burner or ducted burner, preferably at a point where high velocity has been reached, (0) across the exhaust tube of a combustion chamber, (d) across the exhaust nozzle. Here the objects are to increase flow, to increase the effective total momentum of fluid discharged in unit time, to increase power, and to increase thrust. (7) Suction pump according to Example 6, where the suction tube is connected with turbine means, the turbine means to compressor means, and where a duct is provided conveying the compressed air to the combustion chamber. Fuel means and perhaps ignition means may be provided in an optional manner.

I illustrate a conduit and suction tube of the straight line wall type, and I show the suction tube extending into the conduit at right angles to the axis thereof; but any other suitable type conduit or suction tube, and any other type of extension or angular inclination may be employed.

Suction effect augmenters may be used in connection with the suction tubes. The augmenters may comprise enlarged mouths at the outer end of the suction tubes.

In the text and claims, by tubes of the straight line wall type is meant this type at the aspiration point; by tube is also meant duct, channel, passage; by suction tube is meant any tube which conveys suction flow, also in part; by conduit or flow tube is also meant channel, duct, passage, ducted burner, exhaust tube, exhaust nozzle; by fluid is meant any substance which is capable of flowing, as a liquid, a gas, or readily movable solids; by upstream side or downstream side of the suction tube is meant in relation to the flow through the flow tube.

The principles involved in this invention may be applied 5 to all fields of fluid flow, as related to suction.

Changes in form and construction may be made without departing from the spirit or scope of the invention.

I claim:

1. Suction pump means comprising a flow tube, an open-ended suction tube extending across the flow tube, the ends of the suction tube extending at least to the outside of the flow tube, said suction tube producing in the flow tube an increasing-decreasing constriction of flow, an opening in the wall of the suction tubedownstream of the greatest constriction of flow, and partition means dividing the suction tube transversely and dividing said opening so as to provide longitudinally arranged peripheral openings in the suction tube, said partition means with the suction tube forming channels in the suction tube leading from separate peripheral openings to opposite ends of the suction tube; said constriction of flow producing a low pressure area, resulting in fluid being drawn through the suction tube into the flow tube.

2. In suction pump means comprising a flow'tube, an open-ended suction tube extending across the flow tube through the wall thereof so that the ends of the suction tube open exteriorly of the flow tube, the suction tube producing in the flow tube an increasing-decreasing constriction of flow, and an opening in the wall of the suction tube downstream of the greatest constriction of flow, a partition dividing the suction tube and said opening transversely and extending to the perimeter of the suction tube.

3. Suction pump means comprising a flow tube, an open-ended suction tube extending across the flow tube through the wall thereof so that the ends of the suction tube open exteriorly of the flow tube, the suction tube producing in the flow tube an increasing-decreasing constriction of flow, an opening in the wall of the suction tube downstream of the greatest constriction of flow, and a partition dividing the suction tube and said opening transversely, said partition having an extension projecting beyond the perimeter of the suction tube.

4. Suction pump means comprising a flow tube, an open-ended suction tube extending across the flow tube, the ends of the suction tube extending at least to the outside of the flow tube, said suction tube producing in the flow tube an increasing-decreasing constriction of flow, longitudinally arranged openings in the wall of the suction tube downstream of the greatest constriction of flow, and means forming separate channels in the suction tube leading from separate wall openings to opposite ends of the suction tube; said constriction of flow producing a low pressure area, resulting in fluid being drawn through the suction tube into the flow tube.

5. In suction pump means comprising a' flow tube and 4 an open-ended suction tube extending across the flow tube, the ends of the suction tube extending at least to the outside of the flow tube, and the suction tube producing in the flow tube an increasing-decreasing constriction of flow, transversal partition means in the suction tube, and perimetric openings in the suction tube on both sides of the transversal partition means downstream of the greatest constriction of flow, said partition means with the suction tube forming separate channels leading from said separate perimetric openings to separate ends of the suction tube; said constriction of flow producing a low pressure area, resulting in fluid being drawn through the suction tube into the flow tube.

6. In suction pump means comprising a flow tube, an open-ended suction tube extending across the flow tube and through the wall thereof so that the ends of the suction tube open exteriorly of the flow tube, said suction tube producing in the flow tube an increasing-decreasing constriction of flow, and transversal partition means disposed in the suction tube, peripheral openings in the suction tube on both sides of the transversal partition means downstream of the greatest constriction of flow, said partition means with the suction tube forming separate channels connecting said separate peripheral openings with separate ends of the suction tube; said constriction of flow producing a low pressure area, resulting in fluid being drawn through the suction tube into the flow tube.

7. In suction pump means comprising a flow tube and an open-ended suction tube extending across the flow tube through the wall thereof so that the ends of the suction tube open exteriorly of the flow tube, longitudinally arranged, separate peripheral openings in the suction tube on the downstream side thereof, and a transverse partition in the suction tube extending between the longitudinally arranged peripheral openings, said partition with the suction tube forming separate channels in the suction tube leading from said separate peripheral openings in the suction tube to separate ends of the suction tube.

8. In suction pump means comprising a flow tube and an open-ended suction tube extending across the flow tube through the wall thereof so that the ends of the suction tube open exteriorly of the flow tube, longitudinally arranged, separate perimetric openings in the suction tube on the downstream side thereof, and means forming separate channels in the suction tube leading from said separate perimetric openings to opposite ends of the suction tube.

9. In suction pump means comprising a flow tube, an open-ended suction tube extending across the flow tube through the wall thereof so that the ends of the suction tube open exteriorly of the flow tube, longitudinally arranged peripheral openings in the suction tube on the downstream side thereof, and means forming separate channels in the suction tube connecting said separate peripheral openings with separate ends of the suction tube, a flat body disposed between the peripheral openings exteriorly of the suction tube and extending longitudinally into the flow tube.

References Cited in the file of this patent UNITED STATES PATENTS 2,230,004 Morgan Jan. 28, 1941

Claims (1)

1. SUCTION PUMP MEANS COMPRISING A FLOW TUBE, AN OPEN-ENDED SUCTION TUBE EXTENDING ACROSS THE FLOW TUBE, THE ENDS OF THE SUCTION TUBE EXTENDING AT LEAST TO THE OUTSIDE OF THE FLOW TUBE, SAID SUCTION TUBE PRODUCING IN THE FLOW TUBE AN INCREASING-DECREASING CONSTRICTION OF FLOW, AN OPENING IN THE WALL OF THE SUCTION TUBE DOWNSTREAM OF THE GREATEST CONSTRICTION OF FLOW, AND PARTITION MEANS DIVIDING THE SUCTION TUBE TRANSVERSELY AND DIVIDING SAID OPENING SO AS TO PROVIDE LONGITUDINALLY ARRANGED PERIPHERAL OPENINGS IN THE SUCTION TUBE, SAID PARTITION MEANS WITH THE SUCTION TUBE FORMING CHANNELS IN THE SUCTION TUBE LEADING FROM SEPARATE PERIPHERAL OPENINGS TO OPPOSITE ENDS OF THE SUCTION TUBE; SAID CONSTRICTION OF FLOW PRODUCING A LOW PRESSURE AREA, RESULTING IN FLUID BEING DRAWN THROUGH THE SUCTION TUBE INTO THE FLOW TUBE.

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