Loop type thermo syphone, heat radiation system, heat exchange system, and stirling cooling chamber
AssigneeSharp Kabushiki Kaisha
InventorsWei Chen, Masaaki Masuda
Life of this patent
Estimating the term…
Abstract
A natural circulation circuit includes an evaporator surrounding a heat radiating portion of a Stirling refrigerating machine to absorb heat of the heat radiating portion through evaporation of a coolant, a condenser arranged to be higher than the evaporator to condense the coolant having gas phase, a conduit guiding the coolant from the evaporator to the condenser, and a return pipe returning the liquefied coolant from the condenser to the evaporator. In the evaporator a distance between an opening of the return pipe and an inner circumferential surface of the evaporator is smaller than that between an opening of the conduit and the inner circumferential surface.
Claims24
A heat exchange system comprising:
- an evaporator surrounding a heat radiating portion to evaporate a coolant in said evaporator;
- a condenser condensing said coolant;
- a conduit guiding said coolant from said evaporator to said condenser;
- and
- a return pipe returning from said condenser to said evaporator said coolant condensed by said condenser, wherein in said evaporator a distance between an opening of said return pipe and an inner circumferential surface of said evaporator is smaller than that between an opening of said conduit and said inner circumferential surface.
A heat exchange system comprising:
- a plurality of sub evaporators surrounding a heat radiating portion to evaporate a coolant in said evaporators;
- a condenser condensing said coolant;
- a conduit guiding said coolant from each of said sub evaporators to said condenser;
- and
- a return pipe returning from said condenser to each of said sub evaporators said coolant condensed by said condenser, wherein said return pipe is connected to each of said sub evaporators at a position closer to an end surface of said sub evaporator that traverses said sub evaporator's circumferential direction than said conduit is.
A heat exchange system comprising:
- an evaporator divided into sub evaporators;
- a condenser condensing said coolant;
- a conduit guiding said coolant from each of said sub evaporators to said condenser;
- a return pipe returning from said condenser to each of said sub evaporators said coolant condensed by said condenser;
- and
- a connection pipe connecting said sub evaporators to allow said sub evaporators to communicate a liquid coolant.
A heat exchange system comprising:
- an evaporator surrounding a heat radiating portion to evaporate a coolant in said evaporator;
- a condenser condensing said coolant;
- a conduit guiding said coolant from said evaporator to said condenser;
- a return pipe returning from said condenser to said evaporator said coolant condensed by said condenser;
- and
- a preventer provided in said evaporator to prevent a liquid coolant from flowing into said conduit.
A heat exchange system comprising:
- an evaporator surrounding a heat radiating portion to evaporate a coolant in said evaporator;
- a condenser condensing said coolant;
- first and second conduits guiding said coolant from said evaporator to said condenser;
- and
- a return pipe returning from said condenser to said evaporator said coolant condensed by said condenser, wherein said return pipe is connected to said evaporator between locations having said first and second conduits connected to said evaporator.
A loop thermosyphon comprising:
- an evaporator depriving a heat source of heat to evaporate a working fluid in said evaporator;
- and
- a condenser externally radiating heat of said working fluid to condense said working fluid in said condenser, said evaporator and said condenser being connected to allow said working fluid to circulate between said evaporator and said condenser, wherein said evaporator at a portion abutting against said heat source is roughened on an internal wall surface thereof.
A heat radiation system comprising a heat radiating portion, an evaporator depriving said heat radiating portion of heat to evaporate a working fluid in said evaporator, and a condenser externally radiating heat of said working fluid to condense said working fluid in said condenser, said evaporator and said condenser being connected to allow said working fluid to circulate between said evaporator and said condenser, wherein:
- said evaporator is formed of an annular frame having a path therein for passing said working fluid;
- said annular frame has an opening closer to said heat radiating portion, as seen in a cross section including an axial line of said annular frame;
- said path is defined by an internal wall surface of said annular frame and an external wall surface of said heat radiating portion positioned to close said opening;
- and
- said heat radiating portion on said external wall surface at a portion facing said path is roughened.
Dependencies are inferred from the claim text.