Laminar flow radial ceiling fan
The prior art has used pitched blades attached to a stationary motor, normally electric. to move air within the confines of a structure or room. The preferred invention incorporates a series of solid discs. The discs are affixed to a stationary electric motor and thus rotate around a central axis. The discs are equally spaced and centrally perforated in a manner that will allow air to flow in high volumes through the perforations and pass along the discs thus exiting symmetrically between each disc perpendicularly to the flow of air that is at its entrance. Due to the less restrictive or low pressure air entrance as well as the correct vertical disc spacing a corresponding increase in the laminar flow is realized. This feature of the preferred invention allows for operation at a rotational speed that practical for use as a ceiling fan.
1. A method of producing a laminar flow air circulation comprising:
an apparatus comprising:
a plurality of discs oriented parallel, spaced apart and sharing a common central axis, including a bottom most disc, each disc having an outer circumference and an inner circumference, said inner circumference defining a centrally located aperture;
wherein each of said discs are spaced apart at a vertical distance (V) as a function of the inner diameter (ID) according to the formula V=0.0317×ID, wherein said vertical distance is about 0.7 inches to 0.8 inches,
a post located at a central axis of said apparatus and having an outer surface,
said plurality of discs mounted about said post so as to form an air return space between the surface of the post and the inner circumference of said bottom most disc,
said discs mounted such that they freely rotate around their central axis, and
said post outer surface having a conical shape such that it acts as an air guide that directs the incoming air without turbulence,
said laminar flow being produced through method steps comprising:
rotating said discs at a speed sufficient to cause air to flow up into the air return space, along the post air guide surface which redirects the air flow from upward to outward without generating turbulence, then outward between the discs, out beyond the disc outer circumference and a surrounding air space,
wherein said method steps operating upon said apparatus produce generally laminar flow air circulation in the surrounding air space.
2. The method as defined in claim 1 wherein the surrounding air space is a room in a building selected from the group consisting of: a private residence, a retail business space, a front office business space and a back office business space.
3. The method as defined in claim 1 wherein said plurality of discs comprise a single drive disc which is driven by a motor and 4 to 7 slave discs which are driven by said drive disc.
4. The method as defined in claim 1 wherein each of said discs are essentially identical, said disc outer diameter is about 30 to 38 inches, and said disc inner diameter is about 20 to 24 inches.
5. The method as defined in claim 1 wherein vertical spacers, mounted between said plurality of discs, hold said discs spaced apart, said vertical spacers further comprising laminar airfoil vanes.
6. An apparatus comprising:
a plurality of discs oriented parallel, spaced apart and sharing a common central axis, including a bottom most disc, each disc having an outer circumference and an inner circumference, said inner circumference defining a centrally located aperture;
a post located at a central axis of said apparatus and having an outer surface, said post having an outer surface having a conical shape such that it acts as an air guide that directs the incoming air without turbulence,
said plurality of discs mounted about said post so as to form an air return space between the surface of the post and the inner circumference of said bottom most disc,
wherein each of said discs are spaced apart at a vertical distance (V) as a function of the inner diameter (ID) according to the formula V=0.0317×ID, wherein said vertical distance is about 0.7 inches to 0.8 inches, and
said discs mounted such that they freely rotate around their central axis,
wherein the size of said air return space, the outer surface shape of said post, the distance space of said plurality of discs, the number of discs and the speed of rotation are all configured to produce a generally laminar flow air circulation in a space surrounding the apparatus.
7. The apparatus as defined in claim 6 wherein the surrounding air space is a room in a building selected from the group consisting of: a private residence, a retail business space, a front office business space and a back office business space.
8. The apparatus as defined in claim 6 wherein said plurality of discs comprise a single drive disc which is driven by a motor and 4 to 7 slave discs which are driven by said drive disc.
9. The apparatus as defined in claim 6 wherein each of said discs are essentially identical, said disc outer diameter is about 30 to 38 inches, and said disc inner diameter is about 20 to 24 inches.
10. The apparatus as defined in claim 6 wherein vertical spacers, mounted between said plurality of discs, hold said discs spaced apart, said vertical spacers further comprising laminar airfoil vanes.