초록 ▼

Apparatus and method for sub-ambient cooling using thermoelectric element dynamics in conjunction with pulsed electrical power and selectively enabled thermal coupling to the cold sink. In one form, Peltier devices are dynamically enabled using pulses of electrical power while the thermal path betwe

Apparatus and method for sub-ambient cooling using thermoelectric element dynamics in conjunction with pulsed electrical power and selectively enabled thermal coupling to the cold sink. In one form, Peltier devices are dynamically enabled using pulses of electrical power while the thermal path between the cold side of the Peltier device and the cold sink is selectively switched in relative synchronism between conductive states responsive to the dynamics of the Peltier device temperatures. Switched coupling of the thermal connection between the cold sink and the Peltier device materially improves efficiency by decoupling Joule heating and conductive heat transfer losses otherwise conveyed from the Peltier device. Preferable implementations utilizes MEMS to accomplish the selective thermal switching, whereby sub-ambient cooling capacity is increased by parallel operation of multiple Peltier devices and MEMS switches.

대표청구항 ▼

[ I claim:] [1.] A thermoelectric cooling apparatus, comprising:a first thermal sink of a first nominal temperature;a second thermal sink of a second nominal temperature, the second temperature being relatively greater than the first temperature;a thermoelectric element continuously coupled to the s

[ I claim:] [1.] A thermoelectric cooling apparatus, comprising:a first thermal sink of a first nominal temperature;a second thermal sink of a second nominal temperature, the second temperature being relatively greater than the first temperature;a thermoelectric element continuously coupled to the second thermal sink;means for selectively switching a thermal coupling of the thermoelectric element to the first thermal sink; andmeans for selectively switching an electrical voltage across the thermoelectric element operable independent from the means for selectively switching the thermal coupling.