Circuit card mounting assembly

An assembly for mounting circuit cards wherein the assembly comprises

• a plurality of shelves each displaced from the other for receiving and mounting ones of the circuit cards and wherein each shelf is equipped with backplane apparatus interconnecting circuit cards mounted in the shelves,
• a heat exchanger unit and a refrigeration unit each formed of a plurality of radiator fins separated by vanes and interconnected by a plurality of return pipes extending through the circuit card mounting shelves,
• a plurality of vent pipes having one end connected with the heat exchanger vanes and each extended from the heat exchanger unit into a circuit card mounting shelf in engagement with a mounted circuit card to transfer heat generated by the engaged circuit card to the heat exchanger unit,
• apparatus connected with the heat exchanger unit and the refrigeration unit and supplying a continuous flow of coolant around the radiator fins and vanes to absorb heat from the vent pipes and through the return pipes to the refrigeration unit to remove the absorbed heat generated by mounted circuit cards,
• heat exchanger connectors positioned in the circuit card mounting shelves and terminating other ends of the vent pipes for engaging heat exchanger vanes, and
• means for displacing ones of the vent pipes to engage the heat exchanger connectors with corresponding heat sinks positioned on mounted circuit cards to transfer heat generated by components located on the mounted circuit cards to the heat exchanger unit.

An assembly for mounting circuit cards wherein the assembly comprises

• a plurality of generally circular configured shelves each displaced from the other for receiving and mounting ones of the circuit cards and wherein each shelf is equipped with backplane apparatus electrically and optically interconnecting circuit cards mounted in the shelf,
• a generally circular configured heat exchanger unit formed of a plurality of circular radiator fins separated by vanes extended outward from a hub of the unit and interconnected by a plurality of return pipes extending through the circuit card mounting shelves and terminated in a similarly configured refrigeration unit separated from the heat exchanger unit by the circuit card mounting shelves,
• a plurality of vent pipes having one end connected with the heat exchanger vanes and each extended from the heat exchanger unit into the circuit card mounting shelves in engagement with the mounted circuit cards to transfer heat generated by the engaged circuit cards to the heat exchanger unit,
• apparatus connected with the heat exchanger unit and supplying a continuous flow of coolant around the radiator fins and vanes to absorb heat from the vent pipes and through the return pipes to the refrigeration unit to remove the heat generated by mounted circuit cards,
• heat exchanger connectors positioned in the circuit card mounting shelves and terminating other ends of the vent pipes for engaging the heat exchanger vanes, and
• means for displacing ones of the vent pipes to engage corresponding heat exchanger connectors with multiple ones of heat sinks positioned on a circuit card inserted into one of the mounting shelves to transfer heat generated by components located on the mounted circuit card to the heat exchanger unit.