A motor drive device capable of attaching a fan unit to a mounting member more easily. The motor drive device includes the mounting member formed with a mounting hole, the fan unit including a lid positioned facing the mounting member to cover the mounting hole and being fixed to the mounting member, and a restricting member movably attached to the lid, the restricting member being movable between a restriction position for engaging with the mounting member and a non-restriction position for releasing from the mounting member.

Apparatuses and methods are provided for protectively covering an air inlet or outlet of an air-moving assembly. The apparatus includes a protective cover assembly, which includes a retractable cover and a spring-biasing mechanism. The retractable cover transitions between a retracted state, when the air-moving assembly is operatively positioned within the chassis, and in extended state, when the air-moving assembly is withdrawn from the chassis. In retracted state, the retractable cover is retracted away from the air inlet or outlet, and in extended state, the retractable cover covers, at least partially, the air inlet or outlet. The spring-biasing mechanism is coupled to the retractable cover and biases the retractable cover in the extended state when the air-moving assembly is withdrawn from the chassis, and compresses to allow transition of the retractable cover to the retracted state as the air-moving assembly is inserted into operative position within the chassis.

A universal quick-disconnect fan tray for air cooling of field replaceable electronic units within a rack-mount enclosure comprises a pair of fan modules mounted in parallel on an intermediate printed circuit board for providing a unidirectional air flow through the enclosure. The printed circuit board has asymmetrically located spring-loaded pogo pin electrical contacts and a pogo pin mechanical locator for respectively engaging cooperating front or rear electrical pads and cooperating front and rear locator features within the enclosure for correctly locating and providing electrical connections to the fan tray and that afford quick connect and disconnect. The locations of the cooperating pads and features enable the fan tray to be translatable without being rotated from the front to the rear of the enclosure to maintain same direction of airflow.

Apparatuses and methods are provided for protectively covering an air inlet or outlet of an air-moving assembly. The apparatus includes a protective cover assembly, which includes a retractable cover and a spring-biasing mechanism. The retractable cover transitions between a retracted state, when the air-moving assembly is operatively positioned within the chassis, and in extended state, when the air-moving assembly is withdrawn from the chassis. In retracted state, the retractable cover is retracted away from the air inlet or outlet, and in extended state, the retractable cover covers, at least partially, the air inlet or outlet. The spring-biasing mechanism is coupled to the retractable cover and biases the retractable cover in the extended state when the air-moving assembly is withdrawn from the chassis, and compresses to allow transition of the retractable cover to the retracted state as the air-moving assembly is inserted into operative position within the chassis.

An equipment enclosure free air cooling assembly includes an air outlet arranged to deliver air to inside an equipment enclosure and an air inlet arranged to receive air from outside the equipment enclosure. An air flow pathway is provided through which air entering the air inlet must pass to reach the air outlet. An adjustable screen assembly has a screen filter element. An adjustment mechanism is operable to selectively utilize different regions of the screen filter element for filtering air passing through the air flow pathway at different times.

Methods, systems, and apparatus, including a housing defining a top surface, a bottom surface, and first and second side surfaces. Also included is a first rail extending from the first side surface and a second rail extending from the second surface such that when the first and second rails are slidably engaged with a third surface. A blower device is included that is axially disposed between the top and bottom surface, wherein a first end of the housing defines a first plenum outlet, the top surface defines a plenum inlet, the bottom surface defines a second plenum outlet that is positioned on a second side of the blower device and that fluidly couples the first plenum chamber to the second plenum chamber. Further, the second plenum chamber is formed by the first and second rails, the bottom surface and the third surface has a third plenum outlet.

Examples herein relate to cooling systems. In one example, a cooling system comprises a plurality of adjacent fan modules configured to generate a plurality of cooling flows, a fan cage having a central axis adapted to contain the plurality of adjacent fan modules, the fan cage comprising a cavity on its central axis. Furthermore, the system comprises a first support bracket adapted to support the fan cage such that the fan cage rotates on its central axis and a bush established in the cavity of the fan cage. A first end of the bush is adapted to engage the first support bracket on a first surface of the fan cage.

Methods, systems, and apparatus, including a housing defining a top surface, a bottom surface, and first and second side surfaces. Also included is a first rail extending from the first side surface and a second rail extending from the second surface such that when the first and second rails are slidably engaged with a third surface. A blower device is included that is axially disposed between the top and bottom surface, wherein a first end of the housing defines a first plenum outlet, the top surface defines a plenum inlet, the bottom surface defines a second plenum outlet that is positioned on a second side of the blower device and that fluidly couples the first plenum chamber to the second plenum chamber. Further, the second plenum chamber is formed by the first and second rails, the bottom surface and the third surface has a third plenum outlet.

A latch assembly for a cooling unit of a telecommunications shelf assembly, the latch assembly including: a faceplate; a latch handle movably coupled to the faceplate, wherein, when the latch handle is actuated, the cooling unit is attached to/released from the shelf assembly; and a locking mechanism coupled to the latch handle, wherein, when the locking mechanism is actuated, the cooling unit is locked to/unlocked from the shelf assembly; wherein the locking mechanism includes a fan brake actuator mechanism that is coupled to an electronic fan brake switch associated with one or more fans of the cooling unit. Optionally, the latch handle is pivotably coupled to the faceplate and is actuated by rotation. Optionally, the locking mechanism includes a captive screw that is advanced into/backed out of a threaded aperture associated with the faceplate. Optionally, the fan brake actuator mechanism includes a lever member that couples the locking mechanism to the electronic fan brake switch.

Fan trays and components thereof are described herein. In some embodiments, a removable, compact fan tray is configured to be disposed within a slot of a chassis. The fan tray can be latchably coupled to the chassis, and/or can include a light source, such as an LED operable to depict the status of the fan tray. Leads of the light source can be disposed within an sleeve operable to contain and/or insulate the leads. The fan tray can, in some embodiments, be configured to be keyed to a particular type of chassis slot, for example, a slot associated with an air flow direction.