Amphenol Corporation

Cereva Networks. Inc.

Emc Corporation

Christopher Heard

Andreas C Pfahnl

An electronic assembly for housing circuit cards of different types, which communicate with one another at high speed. Circuit cards of a first type plug into a backplane side-by-side. Circuit cards of a second type are arranged perpendicularly to the circuit cards of the first type. The arrangement allows cards of the first type to communicate with cards of the second type over short distances, thus improving system throughput. It also allows cards of different types to be cooled differently, thus promoting efficient cooling.

Electronic system with non-parallel arrays of circuit card assemblies

An electronic system having a backplane designed for efficient routing of signal traces. The system includes two or more daughter cards that are connected to multiple other daughter cards in the system. These daughter cards are mounted centrally to the backplane in the system. Connections between those two daughter cards and the backplane are made through electrical connectors that are distributed in columns along the length of the daughter cards. The connectors are positioned with space between the connectors. The space forms routing channels such that signals that must be connected to the central cards from a daughter cards on either side may be routed through the routing channels.

Backplane with routing to reduce layer count

An electronic system is disclosed that uses air for cooling first and second orthogonally oriented arrays of parallel circuit boards. Air is drawn into the front of the system, passes alongside the circuit boards in the first array, takes a 90-degree turn, continues over the circuit boards in the second array, and takes another 90-degree turn to exhaust through the rear of the system. The circuit boards in the first array are cooled through a separate airflow path, which preferably also runs front-to-rear.

Air cooling architecture for orthogonal board architectures

An air vent comprises a vent assembly including an electrically-conductive screen mounted inside an enclosure constructed of panels. One or more of the panels has an array of holes through it. The holes are configured and sized to prevent an appendage, such as a finger from penetrating the enclosure. However, the collective hole area is sufficient to permit adequate airflow. The conductive screen covers the holes and provides for EMI suppression.

Electronic circuitry enclosure with air vents that comply with emissions and safety standards

Impellers are used in the pull tray of a failure tolerant cooling system and are isolated from each other by baffles, so that each impeller has its own exhaust air flow path with an predetermined airflow resistance. The exhaust airflow resistance is sufficiently low that the associated impeller can exhaust enough air to provide sufficient airflow over the components during normal operation. In particular, the airflow is sufficient so that if a fan in the push tray fails, the pressure drop created by the impellers in the pull tray is sufficient to draw air through the space occupied by the failed fan. However, the exhaust airflow resistance for each impeller in the pull tray is sufficiently high that, if an impeller fails, the resistance limits the amount of air that the remaining impellers can pull in through the failed impeller opening, thereby enabling the airflow delivered by the fans in the push tray to continue to be distributed evenly across the components.

Failure-tolerant high-density card rack cooling system and method

A disk drive packaging apparatus has a chassis with open ends that encloses all of the disk drives. The open ends of the chassis are covered with conductive screens. A disk-drive carrier is provided for each drive that holds, but does not enclose, the disk drive. The screens provide both emission containment and guarantees adequate air distribution for cooling. Because the screens are able to contain the radiation emission, conductive enclosures are not needed for each separate drive, with the result that the drives can be packed more densely.

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Brookline, NH, United States of America

Christopher Heard