Fluid sprinkling – spraying – and diffusing – Including supplemental gas shaping or shielding jet – Plural sets of gas jet orifices
Patent
1983-11-09
1986-02-11
Nase, Jeffrey V.
Fluid sprinkling, spraying, and diffusing
Including supplemental gas shaping or shielding jet
Plural sets of gas jet orifices
239424, 239430, 239601, B05B 128
Patent
active
045694826
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus and method of using high-pressure water to effectively wash facilities on an industrial field, such as for example, the walls of tunnels under construction at road sites. The invention makes use of a vehicle-mounted water sprayer capable of discharging pressurized water in a uniform, bar-shaped pattern.
The water sprayer of the invention ejects a bar-shaped water jet formed from uniformly pressurized streams of atomized water. The bar-shaped jet is formed by impinging a high-pressure stream of water with compressed air discharging through the walls of a rectangular nozzle and further impinging said jet with other air flow by means of other instruments mounted on the moving vehicle.
Most conventional nozzles eject either elliptical, circular, or ring-type patterns of liquid depending upon the shape and size of the discharge port of the nozzle. Such an elliptical pattern is shown in FIG. 5. Here, the maximum pressure is located at the center portion thereof and becomes pregressively lower at the peripheral portion of the ellipse, the further one gets from the axis O. The resulting variable pressure gradient is shown in FIG. 7. Such a gradient is present even in those nozzles where the angle of the nozzle port is constructed to be variable. The resulting pressure distribution pattern may be simply represented as a series of isobaric electrical lines which resemble hills in a map (FIG. 8). Such a representation clearly demonstrates that a uniformless pressure is apt to occur particular in the direction of the Y axis of the ejection stream. Such non-uniformity compels the operator to either excessively repeat the movement of the nozzle over the structure being cleaned in order to obtain the desired washing effect, or to use a plurality of nozzles.
SUMMARY OF THE INVENTION
The present invention relates to an apparatus and method of washing road facilities, and generally comprises a cylindrical drum havig an external and internal air chamber, each of which terminates in a pipe having a rectangular cross-section. One of the pipes has a smaller cross-section than the other, and is disposed within the larger pipe. A high-pressure water pipe is concentrically disposed along the longitudinal axis of the smaller pipe. The space between the two pipes defines a passageway for a stream of compressed air which shapes the stream of water emanating out of the center of the smaller pipe into a jet of water having a bar-shaped cross-section and a uniform pressure gradient at all points across this cross-section. Preferably, the velocity of the stream of compressed air is approximately equivalent to the velocity of the water jet leaving the water pipe. Additionally, the smaller pipe is provided with a symmetrical array of apertures for shunting part of the air stream flowing between the two pipes in a radial direction toward the pressurized stream.
BRIEF DESCRIPTION OF THE SEVERAL FIGURES
FIG. 1 is a perspective view of a nozzle assembly embodying the present invention;
FIG. 2 is a top sectional view of this nozzle in operation;
FIG. 3 is a side sectional view of this nozzle in operation;
FIG. 4 is a graph illustrating the pressure distribution of the jet produced by the nozzle of the invention;
FIG. 5 shows a conventional water distribtution pattern;
FIG. 6 is a graph representing the water pressure distribution pattern of FIG. 4, and
FIGS. 7 and 8 show conventional water distribution patterns, respectively.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention encompasses both a method of ejecting high-pressure water, as well as a nozzle for carrying out the method. The invention is particularly useful, when mounted on a traveling vehicle, for washing the wall surface of a tunnel. The nozzle of the invention achieves a superior washing action by means of a jet of water having a bar-shaped cross-section as shown in FIG. 6, which exerts a uniform pressure on both the X and Y axes of the nozzle.
With reference now to FIGS. 1 and
REFERENCES:
patent: 1302950 (1919-05-01), Muckle
patent: 2029337 (1936-02-01), Parker
Hiruma Yutaka
Okita Akira
Moon, Jr. James R.
Nase Jeffrey V.
Tokyo Road Engineering Co., Ltd.
LandOfFree
Cleaning apparatus and method utilizing pressurized water does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cleaning apparatus and method utilizing pressurized water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cleaning apparatus and method utilizing pressurized water will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1202026