Water supply system with a pipe freeze up prevention in an aircr

Details Water supply system with a pipe freeze up prevention in an aircr Water supply system with a pipe freeze up prevention in an aircr

1996-03-01

1997-04-22

Fox, John C.

Fluid handling

With casing, support, protector or static constructional...

Vehicle

137561A, 138 32, 2441185, B64D 1100

Patent

active

056222076

ABSTRACT:
Freeze-up is prevented in a tap pipe connectable to a main liquid supply line, by a liquid circulator directly inside the tap pipe. The liquid circulator is either a Pitot tube that takes advantage of the liquid flow in the main line to establish a circulation in the tap line, or the liquid circulator is a driven pump directly in the tap line. The pump is driven by an electric motor or by a turbine rotor. The turbine rotor may be an axial flow wheel, or a paddle wheel driven by the liquid flow in the main line for driving the pump. The pump itself may be a paddle wheel. The Pitot tube, the turbine rotor, and the paddle wheel are very energy efficient by using the flow or dynamic head in the main line.

REFERENCES:
patent: 349202 (1886-09-01), Barrett
patent: 712859 (1902-11-01), Sheermesser
patent: 2445414 (1948-07-01), Zabriskie et al.
patent: 4867190 (1989-09-01), Jungowski et al.
patent: 5261440 (1993-11-01), Frank
patent: 5303739 (1994-04-01), Ellgoth et al.
patent: 5311904 (1994-05-01), Beppu

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