A fan wheel with a hub is centrally supported with respect to a drive and coaxially rotatable with the hub between stops relative to the hub. The fan wheel having fan blades extending radially from the hub are rotatable about their axes in a range delimited by the stops. Overlaying the rotational support between the stops of the hub, a rotational support between the hub and the drive is provided including a planetary drive in operative arrangement with an adjustment control ring of the driven hub. The fan blades are rotatable in the hub about their blade axes, and adjustment of the blade angles of the fan blades via drive connections to the adjustment control ring, which connections operate in a manner superimposed on one another starting from the drive of the fan wheel.

A remote control system for forward/reverse rotation of a fan includes a remote control and a forward-reverse rotation control unit. The remote control includes an operation module, and a first control module capable of outputting an operation signal which corresponds to an operation condition of the operation module. The operation signal can switch between a forward rotation mode and a reverse rotation mode to correspond to the operation condition of the operation module. The forward-reverse rotation control unit includes a double-pole relay that is controllable to switch between a first mode and a second mode and that is used to provide electric power to the fan, and a second control module that controls the double-pole relay to switch modes according to the operation signal, thereby making a rotational direction of the fan correspond to the operation of the operation module.

Provided is a reversible fan that produces a current of air in both of a normal direction and a reverse direction, the reversible fan including: an impeller configured to be rotatable about a rotation axis; a motor configured to rotate the impeller; a base portion supporting the motor; a tubular frame housing the impeller, the motor, and the base portion; a spoke extending from an inner peripheral surface of the frame toward the rotation axis, the spoke supporting the base portion; and a holding portion configured to hold at least a part of a lead wire provided along the spoke to apply power to the motor, wherein the holding portion is provided with a housing space opening in the reverse direction and extending along the spoke.

Provided is a reversible fan including: a fin configured to produce a current of air in both of a normal direction and a reverse direction; an impeller configured to be rotatable about a rotation axis; a motor configured to rotate the impeller; and a tubular frame housing the impeller and the motor, wherein the fin has a shape that allows producing louder noise upon producing the current of air in the normal direction than upon producing the current of air in the reverse direction, and protrudes inward in a radial direction from an inner peripheral surface of the frame.

Provided is a reversible fan that produces a current of air in both of a normal direction and a reverse direction, the reversible fan including: an impeller configured to be rotatable about a rotation axis; a motor configured to rotate the impeller; a base portion supporting the motor; a tubular frame housing the impeller, the motor, and the base portion; a spoke extending from an inner peripheral surface of the frame toward the rotation axis, the spoke supporting the base portion; and a holding portion configured to hold at least a part of a lead wire provided along the spoke to apply power to the motor, wherein the holding portion is provided with a housing space opening in the reverse direction and extending along the spoke.

The present invention relates generally to the field of cooling devices. More specifically, the present invention relates to a table fan device comprised of at least one fan that is further comprised of at least one fan blade, a housing, at least one button, and at least one motor. The device may, in differing embodiments, attach itself to the underside of a table via the use of fasteners and support arms. The device is powered by a motor that rotates the fan blades around a vertical shaft to create airflow. In this manner, the device efficiently expels airflow to create an ideal climate for its users. Accordingly, the present disclosure makes specific reference thereto. Nonetheless, it is to be appreciated that aspects of the present invention are also equally applicable to other like applications, devices and methods of manufacture.

A radial fan comprising: a plurality of blades rotatable about an axis of rotation and extending radially from the axis of rotation; characterised in that each of the blades has a transverse profile that is symmetrical about a radial line of symmetry extending through the blade, at least a portion of the profile of each blade being curved.

The present invention relates to an rapid inflating/deflating device used for a protective clothing and a smart protective clothing, the inflating/deflating device including: an outer cylinder provided with a first hole; an inner cylinder provided in the outer cylinder and provided with a second hole and being capable of sliding between a first position in which the second hole is aligned with the first hole and a second position in which the second hole is deviated from the first hole and is closed by the inner wall of the outer cylinder; a blade provided in the inner cylinder and a motor driving the blade; a biasing device for biasing the inner cylinder toward the first position; wherein the inner cylinder further comprises a third opening on which an one-way valve is provided so as to allow pressurized gas to flow one-way.

Various embodiments are directed to use of RF and WiFi control in a fan device to control fan status and speed and/or fan light on/off status and intensity. A customer premises includes a WiFi router through which WiFi communications can be sent from a WiFi capable device, e.g., a cell phone, to control the fan device and its various functions. While WiFi control is via a WiFi router in the home, the control signals normally do not traverse the Internet or another external network. In addition to WiFi control, control of the fan device can be via an RF control device, e.g., a wall mounted controller. In some embodiments, the fan device reports its state and/or changes in state due to received commands to a server, and the server generates a recommended normal control schedule and an away control schedule and then uses the schedules to control fan device.

A remote control system for forward/reverse rotation of a fan comprises a remote control and a forward-reverse rotation control unit. The remote control includes an operation module, a wireless output module, and a first control module that is electrically connected to the operation module and the wireless output module and that is capable of outputting, through the wireless output module, an operation signal which corresponds to an operation condition of the operation module. The operation signal can switch between a forward rotation mode and a reverse rotation mode to correspond to the operation condition of the operation module. The forward-reverse rotation control unit includes a wireless input module that is used to receive the operation signal, a double-pole relay that is controllable to switch between a first mode and a second mode and that is used to provide electric power to the fan, and a second control module that is electrically connected to the wireless input module and the double-pole relay and that controls the double-pole relay to switch modes according to the operation signal, thereby making a rotational direction of the fan correspond to the operation of the operation module and enhancing convenience of use.