Heat transferring apparatus

Claim 1

A heat transferring apparatus comprising: an evaporator containing a condensable coolant and means for vaporizing said condensable coolant; a condensor disposed above said evaporator; a conduit, the sectional area of which is less than that of said evaporator and said condensor, connecting between a part of the bottom of said evaporator and a part of the top of said condensor, said bottom of said condensor being sloped slightly downwardly toward the interconnection between said condensor and said evaporator so as to facilitate the flow of condensed coolant liquid to said conduit; a tube arranged substantially concentrically within said conduit so as to define a substantially annular chamber therebetween and having one end thereof projecting downwardly into said evaporator and the other end projecting into said condensor; said tube providing a coolant gas path for passing the coolant gas vaporized in said evaporator to said condensor; said substantially annular chamber formed between said concentrically disposed conduit and tube providing a coolant liquid path for returning the coolant liquid condensed in said condensor back to said evaporator; a resistant element disposed within said annular chamber and said coolant liquid path for resisting the upward flow of the coolant gas therein in the direction of said condensor, and flared skirt means secured to the lower end of said tube and within said evaporator for collecting said evaporated coolant gas and conducting the same into said tube to said condensor, and for defining, with said tube, said conduit, and said evaporator, an extension of said annular chamber for conducting said condensed coolant liquid back to said evaporator, whereby heat transfer is performed by phase transition of the coolant and the circulation thereof because of the different vertical disposition of said condensor and said evaporator.