Active cold plate/heat sink

A heat sink apparatus for gathering heat from a heat source having a heat source housing, the apparatus comprising:

• a heat sink chamber having a chamber interior and containing a heat transfer wall for transferring heat from said heat source into said chamber;
• said heat sink chamber comprising a first chamber end wall and a second chamber end wall and a circumferential side wall sealingly interconnecting said first chamber end wall and second chamber end wall;
• wherein said first chamber end wall is said heat transfer wall and wherein said second chamber end wall comprises an outer periphery and a central fluid entry port and a fluid exit port at said outer periphery of said second chamber end wall;
• a fluid circulation path including said chamber interior which is configured to prevent the formation of stagnant fluid dead spaces;
• and fluid directing means for directing said fluid through said fluid circulation path and across said heat transfer wall such that said fluid absorbs heat at said heat transfer wall and flows to a heat discharge region remote from said heat transfer wall where heat is dissipated into the surrounding environment, said fluid directing means comprising a stationary structure directing the fluid in a radial fashion over said heat transfer wall;
• wherein said stationary structure comprises a plurality of blades extending radially from said central fluid entry port adjacent to and along heat transfer wall and within the layer of said fluid adjacent to said heat transfer wall;
• such that said fluid is delivered into said chamber through said chamber entry port and said fluid impinges upon an opposing central region of said first chamber end wall and flows radially outward from the central region in all directions, across said first chamber end wall and towards circumferential side wall, and then diverts away from said first chamber end wall, through said fluid exit port to said heat discharge region from where heat is dissipated into the outside environment, then flows back again through said fluid entry port into said chamber thereby completing a repeating flow cycle.

A heat sink apparatus for gathering and dissipating heat from a heat source having a heat source housing using a heat transfer fluid, the apparatus comprising:

• an impeller chamber having a chamber interior and containing the heat transfer fluid and comprising a heat transfer wall for transferring heat from said heat source into said chamber, said chamber containing the heat transfer fluid;
• a fluid circulation path including said chamber interior which is configured to prevent the formation of stagnant fluid dead spaces;
• and
• fluid propelling means for propelling said fluid through said circulation path and across said heat transfer wall such that said fluid absorbs heat at said heat transfer wall and flows to a heat discharge region remote from said heat transfer wall where the heat is dissipated into the surrounding environment;
• wherein said fluid propelling means comprising a mechanical fluid driving structure for rapidly moving fluid across a wall adjacent to the heat source;
• wherein the heat transfer wall comprises one of:
• a planar surface, and an axisymmetric surface;
• wherein said fluid propelling means comprises a rotating impeller forcing the fluid in a radial fashion over said heat transfer wall;
• wherein said impeller chamber comprises a first chamber end wall and a second chamber end wall and a circumferential side wall sealingly interconnecting said first chamber end wall and said second chamber end wall, and wherein said first chamber end wall is said heat transfer wall and wherein said second chamber end wall comprises an outer periphery and a substantially central fluid entry port and a fluid exit port at said outer periphery of said second chamber end wall;
• such that said fluid is delivered into said chamber through said fluid entry port and said fluid impinges upon an opposing substantially central region of said first chamber end wall and flows radially outward from the substantially central region in all directions, across said first chamber end wall and toward said circumferential side wall, and then diverts away from said first chamber end wall, through said fluid exit port.

A heat sink apparatus for gathering and dissipating heat from a heat source having a heat source housing using a heat transfer fluid, the apparatus comprising:

• an impeller chamber having a chamber interior and containing the heat transfer fluid and comprising a fluid entry port and a fluid exit port and a heat transfer wall for transferring heat from said heat source into said chamber, said chamber containing the heat transfer fluid;
• a fluid circulation path including said chamber interior which is configured to prevent the formation of stagnant fluid dead spaces;
• and fluid propelling means for propelling said fluid through said circulation path and across said heat transfer wall such that said fluid absorbs heat at said heat transfer wall and flows to a heat discharge region remote from said heat transfer wall where the heat is dissipated into the surrounding environment;
• wherein said fluid propelling means comprising a mechanical fluid driving structure for rapidly moving fluid across a wall adjacent to the heat source;
• wherein the heat transfer wall comprises one of:
• a planar surface, and an axisymmetric surface;
• wherein said fluid propelling means comprises a rotating impeller forcing the fluid over said heat transfer wall;
• wherein said impeller chamber comprises a first chamber end wall and a second chamber end wall and a circumferential side wall interconnecting said first chamber end wall and said second chamber end wall, and wherein said heat transfer wall is one of said first chamber end wall, said second chamber end wall and said circumferential side wall;
• such that said fluid is delivered into said chamber through said fluid entry port and exits through said exit port.

A heat sink apparatus for gathering and dissipating heat from a heat source having a heat source housing using a heat transfer fluid, the apparatus comprising:

• an impeller chamber having a chamber interior and containing the heat transfer fluid and comprising a substantially central fluid entry port and a fluid exit port and a heat transfer wall for transferring heat from said heat source into said chamber, said chamber containing the heat transfer fluid;
• a fluid circulation path including said chamber interior which is configured to prevent the formation of stagnant fluid dead spaces;
• and fluid propelling means for propelling said fluid through said circulation path and across said heat transfer wall such that said fluid absorbs heat at said heat transfer wall and flows to a heat discharge region remote from said heat transfer wall where the heat is dissipated into the surrounding environment;
• wherein said fluid propelling means comprising a mechanical fluid driving structure for rapidly moving fluid across a wall adjacent to the heat source;
• wherein the heat transfer wall comprises one of:
• a planar surface, and an axisymmetric surface;
• wherein said fluid propelling means comprises a rotating impeller forcing the fluid over said heat transfer wall;
• such that said fluid is delivered into said chamber through said fluid entry port and exits through said exit port.