Method and system for cooling heat-generating component in a closed-loop system
AssigneeTark, Inc.
InventorJoseph McCarthy
Life of this patent
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Abstract
A system and method for reducing or eliminating pump cavitation in a closed system having at least one or a plurality of fluid phase changes. The system comprises a venturi having a throat which is coupled to a reservoir tank.
Claims40
A closed heat transfer system comprising:
- a pump for pumping fluid through the closed heat transfer system, said pump comprising a pump inlet and a pump outlet;
- a first phase change component in which said fluid undergoes a phase change from liquid to gas;
- a second phase change component coupled to said first phase change component, said fluid undergoing a second phase change from gas to liquid;
- a venturi having a venturi inlet coupled to an outlet of said second phase change component and a venturi outlet coupled to said pump inlet;
- and
- a reservoir coupled to a throat of said venturi;
- said reservoir providing a predetermined pressure at said throat.
A method for reducing or preventing cavitation in a pump in a closed system in which a fluid changes phases between a liquid and a vapor, said method comprising the steps of:
- situating a pump upstream of a first phase change component wherein said fluid changes state to a gas;
- situating a second phase change component downstream of said first phase change component wherein said gas changes state to a liquid;
- situating a venturi between said second phase change component and said pump;
- and
- situating a reservoir at a throat of said venturi,
- said reservoir providing a throat pressure at said throat that increases an overall system pressure so that said fluid entering said pump is subcooled.
A cavitation preventor for subcooling fluid at an inlet of a pump situated in a closed system wherein fluid changes from liquid to gas in a first phase change component, and from gas to liquid in a second phase change component;
- said cavitation preventor comprising:
- a venturi having an outlet coupled to the inlet of the pump;
- and
- a reservoir coupled to a throat of said venturi for providing a throat pressure at said throat that controls overall system pressure so that said fluid entering said inlet of the pump is subcooled to facilitate reducing cavitation in the pump.
A pump cavitation prevention method for subcooling fluid at an inlet of a pump situated in a system, thereby reducing or eliminating cavitation in the pump, said method comprising:
- a venturi for situating in the system;
- and
- a reservoir coupled to a throat of said venturi for providing a pressure at said throat that increases overall system pressure so that said fluid entering said inlet of the pump is subcooled to cause it to either remain in the liquid phase state or change to said liquid phase state.
A method for increasing pressure for controlling a heat-generating component in a closed-loop system comprising a plurality of components including a pump for pumping fluid in said system, the heat-generating component, a heat-rejection component and a conduit for coupling the plurality of components together, said method comprising the steps of:
- situating a venturi in series in said closed-loop system;
- and
- providing a vacuum switch at a throat of said venturi;
- situating an accumulator to the conduit in series;
- using said pump to cause flow in said closed-loop system;
- said vacuum switch causing said heat-generating component to turn off when said throat pressure at said throat becomes a predetermined negative pressure.
A cooling system for cooling a heat-generating component comprising:
- a heat-rejection component;
- a pump for pumping fluid to said heat-rejection component and said heat-generating component;
- a conduit for communicating fluid among said heat-generating component, said heat-rejection component and said pump;
- a venturi coupled to the conduit having a throat;
- an accumulator coupled to said conduit;
- and
- a switch coupled to said throat;
- said switch causing said heat-generating component to cease operating in response to a predetermined pressure at said throat.
Dependencies are inferred from the claim text.