Fluid sprinkling – spraying – and diffusing – Rigid fluid confining distributor – Fluidic oscillator
Patent
1987-10-13
1989-06-06
Joyce, Harold
Fluid sprinkling, spraying, and diffusing
Rigid fluid confining distributor
Fluidic oscillator
239 21, 239 141, E01H 1300
Patent
active
048360864
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for dissolving fog and more particularly to a device which mixes and diffuses warm and cold air to dissolve fog.
It is known that fog mainly comprises a mass of water vapor that is formed in conditions of low temperatures and high humidity, such as to cause condensation of the water vapor at the interface between two dissimilar masses of air.
It is also known that the presence of fog in large open areas such as airports, stadiums, ports, highways, and the like creates extremely hazardous conditions.
Currently, devices are known which cause a blast consisting of an enormous quantity of warm air so as to violently hit the fog-bank with a purpose of dissolving the fog-bank.
Such devices have proven, until now, to be inadequate for the solution of the problem, as they have an excessive energy consumption and produce turbulence in the surrounding air mass, with a resulting failure to improve the visibility in the atmosphere.
SUMMARY AND OBJECTS OF THE INVENTION
In view of the foregoing limitations and shortcomings of the prior art devices, as well as other disadvantages not specifically described above, it is a primary objective of this invention to provide a method and device having a low energy consumption and a high efficiency, which is effective in dissolving fog in large open areas such as stadiums, airports, highways, and the like, so as to re-establish normal visibility in those areas.
Briefly described, the aforementioned objects are accomplished according to the apparatus aspects of the invention by providing a device which includes means for mixing and diffusing a stream of warm air and cold air, and means for discharging a moderately-powered jet of the mixture of warm and cold air to direct the warm air and cold air mixture at a low velocity against the fog-bank, thus dissolving the fog bank. In accordance with the inventive method, the discharged jet maintains a specific relationship between the quantities of warm and cold air, and the velocity of the discharged jet which satisfies the relationship: 10 Kcal/hr per m.sup.3 of ventilated air/hr at a velocity of less than or equal to 20 m/s.
With the foregoing and other objects, advantages and features of the present invention that will become hereinafter apparent, the nature of the invention may be more clearly understood by reference to the following detailed description of the invention, the appended claims, and to the several views illustrated in the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of a first embodiment of the device in accordance with the invention, with the front removed to illustrate the working components of the device.
FIG. 2 is a rear view of the device of FIG. 1, with the rear removed to illustrate the working components of the device.
FIG. 3 is a plan view of the device of FIG. 1, with the top removed to illustrate the working components of the device, and illustrating the air intake and discharge components of the device.
FIG. 4 is a side view of the device as illustrated in FIG. 3 taken according to a vertical plane.
FIGS. 5 and 6 are rear and front lateral perspective views of the device illustrated in FIGS. 1 through 4, with portions broken away to illustrate various working components of the device.
FIG. 7 is a side sectional view of a second embodiment of the invention.
FIGS. 8 and 9 are sectional views of the device illustrated in FIG. 1, taken along lines B--B and C--C, respectively.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings, wherein like parts are designated by like reference numerals throughout, there is illustrated in FIGS. 1 through 6 a device for the mixing and diffusion of warm and cold air and directing a jet of the mixed warm and cold air to dissolve fog, which comprises generally an electrically-powered cold air ventilator 3 and a warm air generator 6. Cold air ventilator 3 and warm air generator 6 are placed side-by-side within a portable metal conta
REFERENCES:
patent: 1793719 (1931-02-01), Reader
patent: 3118604 (1964-01-01), Bertin et al.
patent: 3603507 (1971-09-01), Devlin
patent: 4125223 (1978-11-01), Carver
patent: 4186655 (1980-02-01), Mallory et al.
Report on fog dispersal operations conducted by Paris Airport Authority (1958-1966) published by the Airport of Paris, May 1966.
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