A neck fan is configured to be worn around a neck of a user, the neck fan includes: a shell, comprising an inner shell and an outer shell, where the inner shell and the outer shell are connected to each other to form a receiving cavity; the inner shell is disposed near the neck, the outer shell is disposed away from the neck; at least two fan assemblies, received in the receiving cavity. Each of the at least two fan assemblies includes a drive shaft and fan blades mounted on the drive shaft, an end of the drive shaft is fixedly arranged on the inner shell, the drive shaft is extending from the inner shell towards the receiving cavity, and the other end of the drive shaft is a free end spaced apart from the outer shell.

A neck fan includes: a shell, defining an air inlet, a receiving space, an air duct, and an air outlet, that are communicated with each other; and fan assemblies, received in the receiving space. The fan assemblies are configured to intake air from an outside of the neck fan through the air inlet and to drive the air to flow along the receiving space and the air duct to reach the air outlet; each fan assembly includes a fan and a motor configured to drive the fan to rotate. The air inlet has an air inlet plane perpendicular to an air inlet direction in which the air at an outside of the neck fan is intaken into the neck fan; an angle is formed the air inlet plane and a direction in which the neck fan is worn to the neck and is between 0 degrees and 90 degrees.

A method of cooling a mammal with an implantable blood pump. The method includes measuring a temperature of an internal controller, the internal controller being in communication with the implantable blood pump. an alert is generated if the temperature of the internal controller exceeds a predetermined temperature threshold.

A system that selectively controls temperature within a device such as a neck/head wrap is disclosed. The system can include a pump system having a reservoir that holds a liquid, an element that regulates temperature of the liquid within the reservoir; a pump that draws the liquid from the reservoir; and a distribution manifold attached to the pump hose that receives and distributes the liquid to at least two devices (e.g., cervical collars). The system is also equipped to be selectively monitored, for example, via a smartphone, tablet or computer.

A device and method for inducing sleep, improving blood circulation, and correcting autonomous imbalances. The device includes a heat conducting plate mounted on top of housing upon which a neck of a user can rest, and the device can apply alternate hot and cold stimuli to the neck. The hot and cold stimuli improve blood circulation and correct the autonomous imbalances. The device includes a drive module and a heat sink to quickly switch from between peak hot and cold temperatures of the alternate hot and cold stimuli.

A neck fan is provided and is configured to be worn around a neck of a user. The neck fan includes: a shell, defining a receiving channel; and two centrifugal fans. One of the two centrifugal fans is disposed at an end of the receiving channel, and another one of the two centrifugal fans is disposed at another end of the receiving channel. Each of the two centrifugal fans includes: a plurality of blades, configured to rotate to intake air from an outside of the centrifugal fan to generate wind; and a vortex tongue structure, including a pressurizing plate and a wind guiding plate connected to the pressurizing plate. The pressurizing plate is a curved wall arranged around ends of some of the plurality of blades, the wind guiding plate protrudes from and is extending away from an outer surface of the pressurizing plate.

A neck fan is provided and is configured to be worn around a neck of a user. The neck fan includes: an outer shell, disposed away from the neck; an inner shell, connected to the outer shell and disposed near the neck, wherein the inner shell and the outer shell cooperatively define a receiving space. A plurality of air outlets are defined in the inner shell.

A neck fan is provided and is configured to be worn around a neck of a user. The neck fan includes: an outer shell, disposed away from the neck; an inner shell, connected to the outer shell and disposed near the neck, wherein the inner shell and the outer shell cooperatively define a receiving space. A plurality of air outlets are defined in the inner shell.

A method of cooling a mammal with an implantable blood pump. The method includes measuring a temperature of an internal controller, the internal controller being in communication with the implantable blood pump. An alert is generated if the temperature of the internal controller exceeds a predetermined temperature threshold. The internal controller and implantable blood pump may be implanted at different locations in the patient.

The neck fan includes a neck fan main body and fan blade groups. The neck fan main body includes a blowing housing. The blowing housing forms an accommodating cavity, an air inlet and an air outlet. The fan blade groups arranged in the accommodating cavities. Each fan blade group includes a base plate, a first centrifugal vane wheel, and a second centrifugal vane wheel. The second centrifugal vane wheel is arranged around a periphery of the first centrifugal vane wheel. Each blowing housing includes a first side, a second side opposite to the first side, a third side and a fourth side. The at least one air inlet is provided in one of the first side and the second side and the other one of the first side and the second side has no air inlet, so that the blowing housing is formed into a single-sided air inlet structure.