The disclosure concerns a fan wheel, including a base body with a rotational axis, and a swing part. The base body is made of a first material and the swing part is made of a second material. The density of the second material and the density of the first material are different. The swing part has a surface. The swing part is at least partially surrounded by the base body, so that the base body covers at least 80%, in particular at least 90%, preferably at least 95% of the surface of the swing part. The first material has a first thermal expansion coefficient, and the second material has a second thermal expansion coefficient. The second thermal expansion coefficient amounts to 70% to 110%, in particular 80% to 100%, preferably 85% to 95% of the first thermal expansion coefficient, and/or the swing part is substantially annular and runs fully closed around the rotational axis.

A housing arrangement has a blower motor including a rotation shaft that traverses through an underside and a topside of the blower motor, the rotation shaft being configured to mount a fan impeller thereupon, a first housing part that receives the blower motor, a second housing part that covers the blower motor received in the first housing part, a first decoupling unit arranged circumferentially between the underside of the blower motor and an inner bottom of the first housing part, and a second decoupling unit arranged circumferentially between the topside of the blower motor and an inner surface of the second housing part. Here, the spring stiffness of the first and the second decoupling units are substantially constant in an axial direction, a radial direction, or a normal direction.

A motor support comprises two coaxial rings (20; 22) and an element for limiting the tilting of the inner ring relative to the outer ring. The limiting element comprises a finger (26) projecting from a first of the rings (20; 22) and housed in a receptacle (28) in the second of the rings (20; 22). An axial end-stop in the receptacle (28) limits the movement of the finger (26) in the receptacle (28) in the direction of the common axis (A) of the two rings (20; 22). The axial end-stop comprises a spigot (32) extending from a base (38) of a peg (36) through a wall (45) of the receptacle. The base (38) of the peg (36) is fixed to the second ring. The spigot (32) has a projection (44) capable of abutting against the wall (45) of the receptacle (28).

A fan carrier is to be placed in physical communication with a fan-side connector of an information handling system. The fan carrier includes a plunger assembly and multiple isolators. The plunger assembly is biased toward an at-rest position. The plunger assembly is in physical communication with the fan-side connector when the plunger assembly is in a deformed position. The isolators are mounted on the fan carrier, and dampen vibration energy in the fan carrier and prevent the vibration energy from being transferred to the fan-side connector. The isolators enable the fan-side connector to float within the fan carrier.

The motor support (16) comprises an inner ring (20) able to receive an element of the motor and an outer ring (22) able to be fastened to a housing, and a means (24) of decoupling between the two coaxial rings (20; 22) comprising a plurality of pads (46) of elastomer material that are interposed between the inner ring (20) and the outer ring (22). Each pad (46) is substantially “H”-shaped in form. The two arms (46int, 46ext; 461, 462) of the «H» are separated by a distance B. Each arm (46int, 46ext; 461, 462) has a width D measured in the radial direction. The web (46a) of the “H” has a width A measured in the orthoradial direction. The ratio A/B B is greater than or equal to 1.4, and the ratio A/D is greater than or equal to 2.

A fan includes a column assembly, a fan head, a hinge assembly, and a support structure connected to the fan head and the column assembly. The hinge assembly includes a first connection member and a second connection member which are hinge-connected to each other. The first connection member is connected to the column assembly, and the second connection member is connected to the fan head. The fan head is configured to rotate around the support structure, and an axis around which the fan head rotates relative to the support structure coincides with an axis around which the first connection member and the second connection member rotate relative to each other.

A frequency tuning rib is provided on an impeller shroud to alter a natural frequency of the shroud so as to avoid coincidence with the aerodynamic excitation frequencies to which the shroud is exposed during engine operation.

An HVAC blower motor (10) includes a stator (12) and a rotor (14). The stator (12) include electro-magnets (12a) energized at pre-determined energizing frequency. The rotor (14) angularly moves relative to the stator (12) due to pulsating magnetic field between the stator (12) and the rotor (14). The rotor (14) includes an output shaft (24), a magnet holder (14a) and a plurality of permanent magnets (20). The permanent magnets (20) are configured to interact with the cyclically energized electro-magnets (12a) to cause pulsating magnetic field between the stator (12) and the rotor (14) to cause angular movement of the rotor (14) relative to the stator (12). The magnet holder (14a) includes a strip (15) of vibration damping material secured thereto along an outer periphery thereof to change the natural frequency characteristic of the wall portion 14c is subjected to.

An air conditioner includes a housing including an inlet and an outlet, and a blade rotatably provided to open and close the outlet. A blade drive device is connected to one end of the blade in a longitudinal direction of the blade to rotate the blade. A blade support unit is configured to rotatably support the other end of the blade in the longitudinal direction of the blade. The blade support unit includes a coil spring configured to apply torque to the blade and a blade holder is coupled to the other end of the blade. A first coupler is coupled to the coil spring, and is configured to penetrate the coil of the coil spring. A case is configured to accommodate the first coupler of the blade holder and is mounted to the housing. The air conditioner is capable of reducing deformation and noise in a blade.

A fan casing for mounting of a fan includes a frame including four corner segments and four side segments that are arranged alternately with the corner segments, a seat disposed in the frame, and four support members extending radially and outwardly from the seat and connected respectively to the corner segments. Each support member includes a base connected to the seat and having a width reducing in a direction away from the seat, and a rib connected between the base and the corresponding corner segment. The bases are interconnected to surround the seat. Any two adjacent bases are interconnected to form an arc surface facing the corresponding side segment and adapted to absorb shock.