Electronic apparatus
This electronic apparatus 100 comprises a heating element 20 , and a case 30 . The case 30 has an opening hole 31 . In order that a refrigerant COO will be sealed between the case 30 and the heating element 20 , the outer periphery part of a first heating element external surface 21 , which is the external surface of the heating element 20 , is attached to the outer periphery part of the opening hole 31 . Also, the refrigerant COO is a refrigerant that is capable of phase change from a liquid refrigerant LP-COO to a gas phase refrigerant GP-COO. As a result, it is possible to more efficiently cool the heat of the heating element 20.
1. An electronic apparatus comprising:
a circuit board;
a heat-generating body mounted on the circuit board, an outer circumferential part of a heat-generating body outer surface being an outer surface of the heat-generating body facing away from the circuit board, and the heat-generating body is mounted on the circuit board;
an enclosure including an opening, the opening having an outer circumferential part or an inner circumferential part; and
a connecting part connecting the outer circumferential part of the heat-generating body outer surface to the outer circumferential part or the inner circumferential part of the opening in such a way that a coolant is configured to undergo a phase change between a liquid-phase of the coolant and a gas-phase of the coolant, the coolant is hermetically sealed between the enclosure and the heat-generating body by the connecting part, one end of the connecting part being attached to the outer circumferential part of the heat-generating body outer surface and another end of the connecting part being attached to the outer circumferential part or the inner circumferential part of the opening;
wherein the heat-generating body directly comes in contact with the liquid-phase of the coolant at the opening; and the connecting part is formed by an elastic member pressing the outer circumferential part of the heat-generating body outer surface, and the outer circumferential part or the inner circumferential part of the opening.
2. The electronic apparatus according to claim 1 , further comprising a coolant passage being provided on an inner surface of the enclosure from at least the opening up to above a surface of the liquid-phase of the coolant in a vertical direction, the coolant passage being formed in such a way that the liquid-phase of the coolant flows toward the heat-generating body.
3. The electronic apparatus according to claim 2 , wherein the coolant passage guides the liquid-phase of the coolant toward the heat-generating body by a capillary phenomenon.
4. The electronic apparatus according to claim 3 , wherein the coolant passage is formed by grooves or a porous body.
5. The electronic apparatus according to claim 1 , further comprising a coolant passage being provided on an inner surface of the connecting part from at least an outer circumferential part side of the heat-generating body outer surface up to above a surface of the liquid-phase of the coolant in a vertical direction and being formed in such a way that the liquid-phase of the coolant flows from the outer circumferential part or the inner circumferential part of the opening toward the outer circumferential part of the heat-generating body outer surface.
6. The electronic apparatus according to claim 5 , wherein the coolant passage guides the liquid-phase of the coolant by a capillary phenomenon.
7. The electronic apparatus according to claim 6 , wherein the coolant passage is formed by grooves or a porous body.
8. The electronic apparatus according to claim 1 , wherein the elastic member comprises a first coolant passage and a second coolant passage.
9. The electronic apparatus according to claim 1 , further comprising a boiling acceleration part being provided on the heat-generating body outer surface and accelerating the phase change of the liquid-phase of the coolant around the heat-generating body outer surface to the gas-phase of the coolant by heat of the heat-generating body.
10. The electronic apparatus according to claim 9 , wherein the boiling acceleration part is grooves or a porous body formed on the heat-generating body outer surface.