ADJUSTABLE MULTI-OUTLET VERTICLE TOWER FAN
A vertical tower fan includes a frame structure defining multiple vertically spaced fan spaces, a fan module controllable to rotate vertically spaced fan blades, and multiple housing members mounted on the frame structure at different elevations and respectively surrounding the fan blades and respectively rotatable to adjust the direction of one respective air outlet.
(a) Technical Field of the Invention
The present invention relates to an electric fan and more particularly, to an adjustable multi-outlet vertical tower fan that has multiple air outlets arranged at different elevations and that allows a user to adjust the direction of each air outlet individually.
(b) Description of the Prior Art
A conventional fan generally comprises a base and a fan body supported on the base and horizontally rotatable relative to the base within a limited range. There is another design of fan that has a rotating grill provided over the front side of the fan blade for continuously regulating the direction of output air streams.
Further, many vertical tower fans have been created for the purpose of space saving. A typical vertical tower fan comprises a housing supported on a base. The housing has at least one air inlet and at least one air outlet. Each air outlet is provided with an outlet grill. When in use, the housing can be controlled to oscillate relative to the base within a predetermined angle.
According to the aforesaid various different types of fans, the direction of each air outlet in the housing is not adjustable. Further, due to the drawback of limited air blowing angle, the cover range of a conventional fan is limited.
SUMMARY OF THE INVENTIONThe primary purpose of the present invention is to provide a vertical tower fan, which includes multiple air outlets arranged at different elevations for output air streams in different directions. It is another object of the present invention to provide a vertical tower fan, which allows adjustment of the direction of each air outlet individually.
To achieve these and other objects of the present invention, the vertical tower fan comprises a frame structure, a fan module, and multiple housing members. The frame structure comprises a plurality of posts, and a plurality of partition plates fixedly fastened to the posts at different elevations and defining a plurality of vertically spaced fan spaces. The fan module comprises a fan motor, a fan shaft vertically inserted through the partition plates and rotatable by the fan motor, and a plurality of fan blades respectively suspending in the fan spaces and affixed to the fan shaft for rotation with the fan shaft. The housing members are respectively sleeved onto the posts of the frame structure and surrounding the fan spaces and the fan blades of the fan module and individually rotatable relative to the frame structure. Each housing member comprises an air inlet, an air outlet, and a grill provided over the air outlet.
The vertical tower fan comprises further includes a base that supports the frame structure. The frame structure is rotatable relative to the base. Further, each housing member comprises a wind baffle disposed at one side of the respective air outlet for guiding generated air stream out of the air outlet. The grill of each housing member is comprised of a plurality of inclination angle-adjustable louvers.
Further, each partition plate comprises a series of teeth arranged on the bottom wall thereof, and each housing member comprises a springy protrusion engageable with the teeth of one housing member.
The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
The following descriptions are of exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
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It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
Claims
1. A vertical tower fan comprising:
- a frame structure, said frame structure comprising a plurality of posts and a plurality of partition plates fixedly fastened to said posts at different elevations and defining a plurality of vertically spaced fan spaces;
- a fan module, said fan module comprising a fan motor, a fan shaft vertically inserted through said partition plates and rotatable by said fan motor, and a plurality of fan blades respectively suspending in said fan spaces and affixed to said fan shaft for rotation with said fan shaft; and
- a plurality of housing members respectively sleeved onto said posts of said frame structure and respectively surrounding said fan spaces and the fan blades of said fan module and rotatable relative to said frame structure, each said housing member comprising an air inlet, an air outlet, and a grill provided over said air outlet.
2. The vertical tower fan as claimed in claim 1, wherein each said housing member comprises a wind baffle disposed at one side of the respective air outlet for guiding generated air stream out of the air outlet; said grill is comprised of a plurality of inclination angle-adjustable louvers.
3. The vertical tower fan as claimed in claim 1, wherein each said partition plate comprises a series of teeth arranged on a bottom wall thereof; each said housing member comprises a springy protrusion engageable with the teeth of one said housing member.
Type: Application
Filed: Jun 23, 2008
Publication Date: Dec 24, 2009
Inventor: SHAO-TSUNG WEI (Yunghe City)
Application Number: 12/143,860
International Classification: F04D 29/46 (20060101); F04D 25/06 (20060101); F04D 17/00 (20060101);