Patent ID: 8468837
Filing Date: 2013-06-25
Classification: F25B

Abstract:
1. A high efficiency thermoelectric cooling system adapted for refrigerating an insulated enclosure, said cooling system comprising a thermoelectric module having a semi-conductor body sandwiched in contact between a pair of thermally conductive plates, a power supply having converter circuit provides a smooth continuous variable output direct current supply to said semi-conductor body to attenuate thermal stress in said conductive plates due to temperature differential fluctuation across said plates, one of said plates being a cold plate and the other a hot plate caused by current flow in said semi-conductor body transferring heat from said cold plate to said hot plate, a cold heat sink element secured to said cold plate to absorb heat from the insulted enclosure to cool the enclosure, a heat convection assembly to evacuate heat from said hot plate to effectively manage the temperature differential across said plates, said heat convection assembly having two or more heat pipes having a connection portion for absorbing heat from said hot plate and a heat dissipating portion secured to a hot heat sink element spaced from said thermally conductive block to define a space gap between said hot plate and said heat sink element, a fan secured directly to said hot heat sink element which is secured to said heat dissipating portions to evacuate heat outside said insulated enclosure, said fan producing a heat dissipating force convection flow parallel to a stack of a plurality of heat conductive fins of said hot heat sink element, said thermoelectric cooling device being mounted in a securement cavity formed in a wall of the insulated enclosure with said heat convection means disposed exteriorly of said insulated enclosure, a heat channeling air convection housing secured to said wall of the insulted enclosure and about said hot heat sink element and said fan, said air convection housing having an interior air intake and exhaust port and an exterior intake and exhaust port, hinge gates communicating said hot heat sink element between a selected one of said interior and exterior air intake ports to a selected one of said interior and exterior air exhaust ports.