Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent
1985-10-29
1987-06-30
Jones, Larry
Stoves and furnaces
Tool having fluid fuel burner
Curling iron
126434, 417208, 16510422, F24J 232
Patent
active
046762256
ABSTRACT:
A geyser pump and a geyser pumped heat transfer system having a multitude of heat absorbing tubes from which heated liquid is pumped into a vapor/liquid separator by geyser action enhanced by positive vapor bubble generation apparatus and flow control methods. A vapor condenser in communication with the separator recovers heat contained in the vapor bubbles and maintains low separator pressure. Pumping starts and stops in response to temperature differences and the pumping rate is proportional to the heating rate. For bubble generation a small volume of the working fluid is isolated in good thermal contact with the absorbing tube and an aperture is formed in communication between the isolated volume and the main volume of working fluid. The small volume of working fluid can be enclosed by inserting into the geyser pump tube a device in the form of a flanged cylinder or a U-shaped tube. Vapor forms readily in the isolated volume and a vapor.+-.liquid interface at the aperture minimizes superheating in the liquid. A directional flow constriction in the absorbing tube which may be in the form of a check valve improves pumping rates and minimizes oscillations which may be produced by the pulsed flow inherent in a geyser pump system. A flow restriction which may be in the form of an orifice or reduced tube diameter moderates peak flow rates by locally and transiently increasing static pressure in expanding bubbles.
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Jones Larry
O'Reilly David
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