Physically separated hot side and cold side heat sinks in a thermoelectric refrigeration system
A thermoelectric system includes a cooling chamber and a thermoelectric heat exchange system. The thermoelectric heat exchange system includes a hot side heat sink, a cold side heat sink that is physically separated from the hot side heat sink, and a heat conduit that thermally couples the hot side heat sink and the cold side heat sink.
1. A thermoelectric refrigeration system comprising:
a cooling chamber; and
a thermoelectric heat exchange system comprising:
a heat exchanger comprising:
a hot side heat sink that is mounted at a first position within the thermoelectric refrigeration system;
a cold side heat sink that is mounted at a second position within the thermoelectric refrigeration system such that the cold side heat sink is physically separated from the hot side heat sink;
one or more thermoelectric coolers having corresponding hot and cold sides, the cold sides of the one or more thermoelectric coolers are in thermal contact with the cold side heat sink; and
a heat conduit comprising:
a first end that is thermally and physically coupled to the hot sides of the one or more thermoelectric coolers; and
a second end that is opposite the first end of the heat conduit and in thermal contact with the hot side heat sink;
wherein the cold side heat sink, the one or more thermoelectric coolers, the heat conduit, and the hot side heat sink, are thermally in series.
2. The thermoelectric refrigeration system of claim 1 wherein the second position is near a top of the cooling chamber and the first position is near a bottom of the cooling chamber.
3. The thermoelectric refrigeration system of claim 2 wherein the thermoelectric heat exchange system further comprises a reject loop that is coupled to the hot side heat sink and is in thermal contact with an exterior wall of the thermoelectric refrigeration system.
4. The thermoelectric refrigeration system of claim 3 wherein the thermoelectric heat exchange system further comprises an accept loop that is coupled to the cold side heat sink and is in thermal contact with an interior wall of the thermoelectric refrigeration system that defines the cooling chamber.
5. The thermoelectric refrigeration system of claim 4 wherein:
the accept loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the accept loop provides passive, two-way transport of a cooling medium through the accept loop such that heat is extracted from the cooling chamber; and
the reject loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the reject loop provides passive, two-way transport of a heat exchange medium through the reject loop such that heat is rejected to an external environment.
6. The thermoelectric refrigeration system of claim 3 wherein the reject loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the reject loop provides passive, two-way transport of a heat exchange medium through the reject loop such that heat is rejected to an external environment.
7. The thermoelectric refrigeration system of claim 2 wherein the thermoelectric heat exchange system further comprises an accept loop that is coupled to the cold side heat sink and is in thermal contact with an interior wall of the thermoelectric refrigeration system that defines the cooling chamber.
8. The thermoelectric refrigeration system of claim 7 wherein the accept loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the accept loop provides passive, two-way transport of a cooling medium through the accept loop such that heat is extracted from the cooling chamber.
9. The thermoelectric refrigeration system of claim 1 wherein the second position is above the first position with respect to the direction of gravity when the thermoelectric refrigeration system is upright.
10. The thermoelectric refrigeration system of claim 1 wherein the heat conduit comprises a heat pipe.
11. The thermoelectric refrigeration system of claim 1 further comprising a cartridge comprising an interconnect board and a plurality of thermoelectric coolers having corresponding hot and cold sides disposed on the interconnect board, the plurality of thermoelectric coolers comprising the one or more thermoelectric coolers.
12. A thermoelectric refrigeration system comprising:
a cooling chamber; and
a thermoelectric heat exchange system comprising:
a heat exchanger comprising:
a hot side heat sink that is mounted at a first position within the thermoelectric refrigeration system;
a cold side heat sink that is mounted at a second position within the thermoelectric refrigeration system such that the cold side heat sink is physically separated from the hot side heat sink;
one or more thermoelectric coolers having corresponding hot and cold sides, the hot sides of the one or more thermoelectric coolers are in thermal contact with the hot side heat sink; and
a heat conduit comprising:
a first end that is thermally and physically coupled to the cold sides of the one or more thermoelectric coolers; and
a second end that is opposite the first end of the heat conduit and in thermal contact with the cold side heat sink;
wherein the cold side heat sink, the one or more thermoelectric coolers, the heat conduit, and the hot side heat sink are thermally in series.
13. The thermoelectric refrigeration system of claim 12 wherein the second position is near a top of the cooling chamber and the first position is near a bottom of the cooling chamber.
14. The thermoelectric refrigeration system of claim 13 wherein the thermoelectric heat exchange system further comprises a reject loop that is coupled to the hot side heat sink and is in thermal contact with an exterior wall of the thermoelectric refrigeration system.
15. The thermoelectric refrigeration system of claim 14 wherein the thermoelectric heat exchange system further comprises an accept loop that is coupled to the cold side heat sink and is in thermal contact with an interior wall of the thermoelectric refrigeration system that defines the cooling chamber.
16. The thermoelectric refrigeration system of claim 15 wherein:
the accept loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the accept loop provides passive, two-way transport of a cooling medium through the accept loop such that heat is extracted from the cooling chamber; and
the reject loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the reject loop provides passive, two-way transport of a heat exchange medium through the reject loop such that heat is rejected to an external environment.
17. The thermoelectric refrigeration system of claim 14 wherein the reject loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the reject loop provides passive, two-way transport of a heat exchange medium through the reject loop such that heat is rejected to an external environment.
18. The thermoelectric refrigeration system of claim 13 wherein the thermoelectric heat exchange system further comprises an accept loop that is coupled to the cold side heat sink and is in thermal contact with an interior wall of the thermoelectric refrigeration system that defines the cooling chamber.
19. The thermoelectric refrigeration system of claim 18 wherein the accept loop operates according to thermosiphon principles such that, when the thermoelectric heat exchange system is active, the accept loop provides passive, two-way transport of a cooling medium through the accept loop such that heat is extracted from the cooling chamber.
20. The thermoelectric refrigeration system of claim 12 wherein the second position is above the first position with respect to the direction of gravity when the thermoelectric refrigeration system is upright.