1407 results about "Ceiling fan" patented technology

A change-over device of pull cord control and wireless remote control for a DC brushless-motor ceiling fan is to have a driver installed in a ceiling fan basic body, and the driver has a detecting unit for detecting whether or not a connector positioned in a hanging bell is connected with a wireless control switch unit so as to control the blades of the DC brushless-motor ceiling fan to rotate by pull cord control or by wireless remote control. Further, the connector is installed inside the hanging bell; therefore, when the DC brushless-motor ceiling fan is to be additionally provided with a wireless control switch unit, it is convenient and safe in installation.

A driving apparatus for a DC brushless motor of a ceiling fan is provided. By setting at least one coder and one sensor outside the DC brushless motor, the driving apparatus can sense the position of magnetic poles of the motor for driving the motor. Meanwhile, a controller set with the motor stores the rotation speed of the motor before being turned off by detecting the turn-off time of a turn-on / off signal.

A ceiling paddle fan fixture for improving the quality of the air in the room and various methods of enhancing room air quality, with particular application in public spaces such as hospitals, health care institutions, dormitories, schools and offices. A UV-C source and an air mover are combined in a single fixture which uses a low intensity UV-C source and a paddle ceiling fan to significantly increase the mixing of the treated with the untreated room air. Sterilization of room air is achieved by the passage of a high volume of air at a relatively slow speed through a relatively low intensity UV-C field.

Improvements in a smoke alarm are presented. The multifunction smoke alarm unit includes separate sensors within a single enclosure for detecting smoke and occupancy, sounding a distinctive audible alarm when combustion is detected or the presence of a person within the area of the sensor. The multifunction smoke alarm can replace an existing single function smoke alarm. Multiple multifunction smoke alarms are networkable together for various purposes. Additional features include intruder alarm, visitor annunciator, integrated illumination source, external lighting control, HVAC system control, ceiling fan control, ventilation control, and / or fire safety system control. The proposed multifunction smoke alarm provides much-needed improvements for security, energy saving, safety, and user convenience without the need for completely separate systems for each purpose.

A high-efficiency air handler that is suitable for moving large volumes of air. The air handler comprises a coil and a fan. The total air volume moving through the unit is preferably over about 2000 CFM, with a total fan static pressure rise of less than about 0.5 inches and preferably less than 0.2 inches of water. The fan is preferably a modified ceiling fan with a rotational speed of less than about 450 rpm. The air handler is preferably part of a system where dehumidification and sensible cooling functions are separate. The separate dehumidification allows for much higher supply air temperatures, preferably within about 10° F. of the space temperature. Low-velocity air distribution through a ceiling plenum or a vent into the space allows for very low fan static pressures, which greatly reduces fan energy use compared to conventional ducted systems. The low static pressures and high supply-air temperatures allow the use of existing drop ceiling construction with little modification. The system can also include low-cost thermal storage. Latent thermal storage is in the form of a concentrated liquid desiccant solution. Chilled water storage is another option. The result is a major improvement in energy efficiency and comfort while reducing installed cost and peak electrical demand of the system.

Ceiling fan blades for maximizing air flow at operational speeds of up to approximately 200 revolutions per minute(rpm). The blades have a positive twist at the tip ends of approximately 5 degrees to approximately 10 degrees parallel to the ceiling. The root end of the blades closest to the motor can have a positive twist exceeding that of the tip end and can be approximately 20 to approximately 35 degrees parallel to the ceiling. The ceiling fans can have individual blade lengths of approximately 20 inches and overall spans of up to approximately 52 inches and up to approximately 54 inches. Each embodiment can use three, four, and five blades, with the blades being made of injection molded plastic. and the like. The embodiments can include built in light kit domes.

Embodiments of the present invention provide systems and methods for mounting an electrically-powered device to a ceiling or other supporting structure. The electrically-powered device can be, for example, a ceiling fan, a ceiling fan with a lighting fixture, or a lighting fixture.

A low-profile ceiling fan which utilizes a fan assembly in a horizontal configuration is herein disclosed. The fan includes an enclosure that mounts to the ceiling. The fan has a low-profile design for low ceilings as commonly found in basements, attics, patio enclosures, mobile homes, recreational vehicles and similar locations. The fan enclosure includes at least one fluorescent lamp mounted alongside the fan. Accessories such as heaters, security cameras, a remote control, and the like are available. The fan includes a heating element and a blower to distribute heated air.

Efficient traditionally appearing ceiling fan blades with aerodynamical upper surfaces and wide tip ends for ceiling fans with blades formed from plastic and / or wood and / or separately attached surfaces that run at reduced energy consumption that move larger air volumes than traditional flat shaped ceiling fan blades. And methods of operating the novel ceiling fans blades for different speeds of up to and less than approximately 250 rpm. The novel blades twisted blades can be configured for ceiling fans having any diameters from less than approximately 32 inches to greater than approximately 64 inch fans, and can be used in two, three, four, five and more blade configurations. The novel fans can be run at reduced speeds, drawing less Watts than conventional fans and still perform better with more air flow and less problems than conventional flat type conventional flat and planar upper and lower surface blades.

Captive fasteners and alignment posts for allowing ceiling fan blade arms to be easily and safely mounted onto ceiling mounted motors. Fasteners such as Philips head screws, regular head screws and bolts can be held captive in place on blade mounting arms with rubber grommet type washers. The grommet type washers have portions that can be sandwiched between the fastener head and the mounting arms and sandwiched between the mounting arms and rotating member on the ceiling fan motor in order to reduce vibration noise and movement Alternatively, novel captive fasteners having a thicker neck portion between a threaded end a the bead can be positioned within the grommet type washers. A second embodiment of the captive fastener is floatingly supported within the mounting arm between the fastener head and a ledge within the mounting arm through-hole, with an enlarged threaded end of the fastener on the opposite side of the ledge. A tip portion of these captive fasteners can remain extended from the upper surface of the mounting arm and is used to guide the fasteners to the mateable threaded openings on the bottom of the rotating member on the motor. A third embodiment incorporates at least one alignment post and mateable receiving hole for allowing the mounting arm to be properly aligned with the correct position on the rotating member. The alignment posts can be tapered, rounded or having flat sides such as squares and hexagons, to further position and hold the mounting arms to the rotating members on the motor. The alignment post(s) can be located on the upper surface of the mounting arms or extend downward from the rotating member of the motor. With the alignment posts either or both captive fasteners or regular fasteners such as bolts, regular head and Philips head screws can be used. Additionally, the alignment post(s) can be used without the grommet shaped washers. The alignment members and captive fasteners eliminate wobble effects by evenly attaching the mounting blade arm to the ceiling fan motor.

A combination ceiling fan and track light where a support mechanism couples to the ceiling and supports the ceiling fan and the ceiling fan supplies power to the track light.

A mounting system (10) for supporting a ceiling fan assembly (11) of the type having a motor, motor housing (46), a plurality of blades (47) and a downrod (29) to a ceiling C. The mounting system includes a mounting plate (14) having a plurality of tab locks (21), a mounting bracket having a plurality of locking tabs (37) configured to mate with the tab locks (21). The mounting bracket also has an opening (40) therein configured to receive a ball joint (31) of the downrod (29).

The invention relates generally to fans, and in particular to ceiling fans. The invention further relates to a ceiling fan blade attachment mechanism.

A large industrial ceiling fan includes exceptionally long fan blades with blade tips that can be tilted upward to more broadly distribute the air. Such broad distribution might be particularly beneficial in cases where the fan is installed relatively low to avoid obstacles such as hanging lights, sprinkler heads and rafters. A low mounting position is possible, because the fan is suspended from a hanger of adjustable length. The fan includes several joints that are redundantly bolted and welded for safety. A continuous retaining ring provides additional safety. A resilient bushing enhances the flexibility of the fan blades and reduces strain where the fan blades connect to a central mounting hub. To more broadly distribute the airflow underneath the fan, each fan blade has a twisted geometry to provide an angle of attack that decreases from the root to the tip of the blade.

Various forms of ceiling fan with easy install features are disclosed. The fans include an electrical quick connect device. The quick connect device includes a plug / receptacle configuration enabling the fan to easily connect to an electricity supply while providing the gravitational and rotational support required by the fan.

A ceiling fan quick connect blade iron system (10) is disclosed which is coupled to a conventional ceiling fan electric motor (11) having a lower portion (12). The motor lower portion has an annular array of threaded mounting holes (13) therein. A post (16) having a stem (17) and a head (18) is mounted within each mounting hole (13) and extends through a S-shaped spring (19). The blade iron system also includes a blade iron (27) having a motor mounting flange (28) and a blade mounting portion (29). The motor mounting portion has a vertical portion (31) extending to a horizontal portion (32). The motor mounting portion has a pair of slots (34) which have an enlarged, peripheral portion (35) that extends through the vertical portion (31) to a narrow, inboard portion (36) that extends through the horizontal portion (32). The horizontal portion (32) also includes a recess (37) about each narrow portion (36).