Variable height fan
AssigneeDell Products L.P.
InventorsQinghong He, Jay M. Zill, Ken Nicholas
Life of this patent
Estimating the term…
Abstract
An information handling system may include a processor, a memory, and a power source; a base chassis including an outer cover surface; a variable height fan including: a main shaft including a cavity formed centrally within the main shaft; a first set of fan blades operatively coupled to the main shaft; a slide shaft placed within the cavity of the main shaft where the slide shaft is operatively coupled to the main shaft to rotate with the main shaft; a second set of fan blades operatively coupled to the slide shaft; a biasing member to bias the slide shaft to extend out of the main shaft; and a contact point prominence as a rotational point interface with the slide shaft operatively coupled to the outer cover surface.
Claims20
An information handling system, comprising:
- a processor, a memory, and a power source;
- a base chassis including an outer cover surface;
- a variable height fan including:
- a main shaft including a cavity formed centrally within the main shaft;
- a first set of fan blades operatively coupled to the main shaft;
- a slide shaft placed within the cavity of the main shaft where the slide shaft is operatively coupled to the main shaft to rotate with the main shaft;
- a second set of fan blades operatively coupled to the slide shaft;
- a biasing member to bias the slide shaft to extend out of the main shaft;
- and
- a contact point prominence as a rotational point interface with the slide shaft operatively coupled to the outer cover surface.
A variable height fan for use as a blower in an information handling system, comprising:
- a housing to house the fan;
- a printed circuit board (PCB) mechanically coupled to the housing;
- a power source electrically coupled to the PCB;
- and an electromagnet electrically coupled to the PCB and power source;
- a bearing mechanically coupled to the housing, the bearing including a first cavity formed therein;
- and
- a main shaft placed within the first cavity, the main shaft including a second cavity formed centrally within the main shaft;
- a first set of fan blades mechanically coupled to the main shaft, the first set of fan blades comprising a set of magnets to magnetically couple with and driven by the electromagnet;
- a slide shaft coupled within the second cavity of the main shaft;
- a second set of fan blades that are
- mechanically coupled to the slide shaft, where
- each blade of the second set of fan blades are mechanically and slidably coupled to one of the fan blades of the first set of fan blades, and
- a spring to bias the slide shaft to extend outwardly from the second cavity of the main shaft.
An information handling system, comprising:
- a processor, a memory, and a power source housed in a D-cover of a base chassis;
- a keyboard chassis configured to have a keyboard mounted thereon and a C-cover configured to house the keyboard chassis in the base chassis;
- a fan chassis mechanically coupled to the keyboard chassis;
- a central bearing coupled to the fan chassis, the central bearing supporting:
- a printed circuit board and an electromagnet physically and electrically coupled to the printed circuit board to drive the rotation of a variable height fan;
- the variable height fan comprising:
- a main shaft including a cavity formed centrally within the main shaft;
- a first set of fan blades mechanically coupled to the main shaft;
- a slide shaft slidingly coupled within the cavity of the main shaft;
- a second set of fan blades mechanically coupled to the slide shaft;
- a biasing member to bias the slide shaft to extend outwardly from the cavity of the main shaft;
- and
- the D-cover configured to house the fan chassis within the base chassis, the D-cover comprising an exhaust vent to allow air flowing through the variable height fan to exit the base chassis.
Dependencies are inferred from the claim text.