Patent ID: 6434941
Filing Date: 2002-08-20
Classification: F03G,Y02E

Abstract:
An ordinary temperature heat engine comprising: a liquefying chamber in which a volatile liquid filled therein is liquefied at a temperature lower than an ordinary temperature; a vaporizing chamber in which a volatile liquid retained therein is vaporized at a temperature not lower than the ordinary temperature; a first communication pipe for communication between the liquefying chamber and a port provided at a level lower than the level of the volatile liquid in the vaporizing chamber; and a second communication pipe for communication between the liquefying chamber and a port provided at a level higher than the level of the volatile liquid in the vaporizing chamber, wherein the first communication pipe has a liquid level elevating portion which vertically extends for allowing the level of the volatile liquid to be elevated therein by a pressure difference between the liquefying chamber and the vaporizing chamber, wherein a liquid trap portion is provided at the midportion of the first communication pipe separately from the liquefying chamber, wherein an on-off valve is provided in the second communication pipe for increasing and reducing the pressure difference between the liquefying chamber and the vaporizing chamber, whereby the volatile liquid is repeatedly caused to rise in the first communication pipe to be accumulated in the liquid trap portion and flow down by opening and closing the on-off valve.