Fluid handling – Siphons – Periodic or accumulation responsive discharge
Patent
1996-11-27
1998-04-14
Michalsky, Gerald A.
Fluid handling
Siphons
Periodic or accumulation responsive discharge
119250, 137140, F04F 1000
Patent
active
057381372
ABSTRACT:
An apparatus for creating surges in an aquarium uses a pump to move water from the aquarium into an external tank. A siphon tube periodically creates surges by draining water from the tank back into the aquarium. The siphon tube has an inlet at a predetermined elevation within the tank, an outlet for discharging water from the tank into a smaller secondary basin, and an intermediate high point at an elevation above the inlet. The secondary basin has a series of water dispersion outlets that allow the surge to discharge into the aquarium. The siphon tube allows water to surge from the tank into the secondary basin and thence back into the aquarium when the water level in the tank rises above the high point of the siphon. The surge continues until the water level falls below the inlet to the siphon. The pump continues to pump water from the aquarium into the tank at a relatively constant rate throughout this entire process, but at a lower flow rate than can be drained by the siphon tube. After the surge stops, the water level in the tank gradually rises as water is pumped from the aquarium into the tank. The water level eventually reaches the high point of the siphon and starts the next surge. This process is continually repeated on periodic basis as long as the pump continues to pump water into the tank. The frequency, duration and intensity of the surges is determined by the relative flow rates of the pump and siphon tube, the size of the tank, and difference in elevations between the high point and inlet of the siphon tube. Adjustable deflectors can be attached to the outlets of the secondary basin to control the direction of the surges within the aquarium.
REFERENCES:
patent: 2976879 (1961-03-01), De Lisle et al.
patent: 5571409 (1996-11-01), Scarborough
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