Abstract:
An ceiling fan (10) comprising a motor system (16). The motor system (16) is mounted around a motor shaft (90). The motor shaft (90) couples to a downrod (14) for suspending the ceiling fan (10) from a structure. The motor shaft (90) and motor (16) are encased by a motor housing (198). The motor housing (198) comprises hub arms (202) for mounting a plurality of blade holders (18). The blade holders (18) coupled to a plurality of blades (20) rotatable about the motor (16) during operation. The downrod (14) comprises a wire disk (58) mounting guy wiring (22) to the downrod (14). A retention rod (304) is utilized internal of the motor (16) and downrod (14) as a secondary retention method. An electrical connector (568) is internal of the motor shaft (90) and electrically couples to the stator to power the motor (16).
Abstract:
Examples are disclosed herein that relate to fans for cooling systems. One example provides a device including an impingement surface, and a fan positioned to direct a flow of air onto the impingement surface. The fan comprises an impeller and motor assembly, and a housing comprising an inlet end, an outlet end, and a side extending at least partially between the inlet end and the outlet end. The fan further comprises a strut located to position the impeller and motor assembly relative to the housing, and an opening formed in the side of the housing, the opening comprising an upstream edge located farther from the impingement surface than a downstream edge of the housing along an axial direction of the fan.
Abstract:
Eine Lüfteranordnung (10) hat einen ersten Axiallüfter (20), einen zweiten Axiallüfter (40) und einen Leitapparat (60). Der erste Axiallüfter hat einen ersten Elektromotor (21) mit einem ersten Außenrotor (22) und einem ersten Innenstator (23), ein mit dem ersten Außenrotor verbundenes erstes Lüfterrad (24) mit einer ersten Mehrzahl von Lüfterflügeln (25), ein mit dem ersten Innenstator verbundenes erstes Basisteil (26) und ein erstes Lüftergehäuse (27), welches den ersten Elektromotor mindestens teilweise umschließt. Der zweite Axiallüfter hat einen zweiten Elektromotor (41) mit einem zweiten Außenrotor (42) und einem zweiten Innenstator (43), ein mit dem zweiten Außenrotor verbundenes zweites Lüfterrad (44) mit einer zweiten Mehrzahl von Lüfterflügeln (45), ein mit dem zweiten Innenstator verbundenes zweites Basisteil (46) und ein zweites Lüftergehäuse (47), welches den zweiten Elektromotor mindestens teilweise umschließt. Zusammen mit dem ersten Lüfterrad definiert das erste Lüftergehäuse einen ringförmigen ersten Kanal (32), durch welchen im Betrieb durch Rotation des ersten Lüfterrads um eine erste Drehachse (30) des ersten Außenrotors ein Fluid förderbar ist. Das zweite Lüftergehäuse definiert zusammen mit dem zweiten Lüfterrad einen ringförmigen zweiten Kanal (52), durch welchen im Betrieb durch Rotation des zweiten Lüfterrads um eine zweite Drehachse (50) des zweiten Außenrotors das Fluid förderbar ist.
Abstract:
Die Erfindung betrifft eine Luftfördereinrichtung (7) mit einem Schaufelrad (9) und einem das Schaufelrad zumindest teilweise zur Umgebung hin abgrenzenden Gehäuse (13).
Abstract:
Methods and systems may provide for a computing system including an electrical component, a heat exchanger coupled to the electrical component, and a fan having a rotor with a plurality of blades, one or more inlet sides and one or more outlet sides disposed adjacent to the heat exchanger. The computing system may also include an obstruction disposed adjacent to at least one of the one or more inlet sides of the fan, wherein a tone to be generated by the obstruction reduces a tonal noise associated with the fan during operation.
Abstract:
A centrifugal blower apparatus includes a scroll-shaped housing with first and second air inlets which open to a blower chamber that is in fluid communication with an air outlet. The blower includes a motor to drive impellers, wherein the motor is secured to a frame coupled within the housing in a manner to substantially enhance aerodynamic performance of the blower.
Abstract:
The described embodiments relate generally to optimizing airflow in a computer system. By modifying the external surface of centrifugal cooling fan enclosures the pressure drop associated with airflow moving around the enclosures can be reduced. This is generally accomplished by rounding off hard edges from the outside of the cooling fan enclosure as well as forming cover surfaces rather than simply using flat cover surfaces. In some cases this can also involve modifying the shape of the fan inlet, or even contouring the shape of the cooling fan blades to allow air to flow more easily through the computer enclosure.
Abstract:
Systems and methods described herein are directed to rotary heat exchangers configured to transfer heat to a heat transfer medium flowing in substantially axial direction within the heat exchangers. Exemplary heat exchangers include a heat conducting structure which is configured to be in thermal contact with a thermal load or a thermal sink, and a heat transfer structure rotatably coupled to the heat conducting structure to form a gap region between the heat conducting structure and the heat transfer structure, the heat transfer structure being configured to rotate during operation of the device. In example devices heat may be transferred across the gap region from a heated axial flow of the heat transfer medium to a cool stationary heat conducting structure, or from a heated stationary conducting structure to a cool axial flow of the heat transfer medium.