U.S. patent application number 12/836554 was filed with the patent office on 2012-01-19 for structure of circulation fan.
Invention is credited to HSIN-HONG CHEN.
Application Number | 20120014785 12/836554 |
Document ID | / |
Family ID | 45467120 |
Filed Date | 2012-01-19 |
United States Patent
Application |
20120014785 |
Kind Code |
A1 |
CHEN; HSIN-HONG |
January 19, 2012 |
STRUCTURE OF CIRCULATION FAN
Abstract
A fan includes a casing that is composed of a front cover and a
rear cover, a base mounted under the casing, and blades rotatably
mounted in the casing. The base includes support frames
symmetrically mounted thereto. The front and rear covers are each
composed of a plurality of circular frames of different diameters.
The rear cover has a lower portion that forms slots corresponding
to the support frames so that the support frames are movably
received through the slots respectively. A connection bar is
connected to the rear cover so that the casing may undergo vertical
and horizontal rotations through the arrangement of the slots for
adjusting direction of airstream generated by the fan, thereby
realizing an effect of indoor air circulation. Further, due to the
arrangement of the rotation structure inside the casing, the
outside appearance of the fan shows a sense of completeness of
aesthetics.
Inventors: |
CHEN; HSIN-HONG; (Taipei,
TW) |
Family ID: |
45467120 |
Appl. No.: |
12/836554 |
Filed: |
July 14, 2010 |
Current U.S.
Class: |
415/182.1 |
Current CPC
Class: |
F04D 29/522 20130101;
F04D 25/10 20130101 |
Class at
Publication: |
415/182.1 |
International
Class: |
F04D 29/00 20060101
F04D029/00 |
Claims
1. A fan comprising a casing that is composed of a front cover and
a rear cover, a base mounted under the casing and having a top
surface comprising support frames symmetrically mounted thereto,
the rear cover having a lower portion that forms slots
corresponding to the support frames so that the support frames are
movably received through the slots respectively, a connection bar
connecting between opposite sides of the rear cover and rotatably
carrying blades and a motor coupled to the blades, whereby, the
casing selectively undergo vertical and horizontal rotations
through movement of the slots along the support frames; wherein the
fan is operable so that the vertical and horizontal rotations of
the casing are selectively performed to adjust direction of
airstream generated by the fan to realize an effect of indoor air
circulation or an effect of drying clothes and wherein the
arrangement of the rotation structure inside the casing, the
outside appearance of the fan shows a sense of completeness of
aesthetics.
2. The fan according to claim 1, wherein the base comprises a
control circuit received therein and the control circuit comprises
a temperature detector, which automatically starts operation of the
fan when a surrounding temperature rises to a first predetermined
level and shuts down the operation of the fan when the surrounding
temperature lowers to a second predetermined level.
3. The fan according to claim 1, wherein the front and rear covers
of the casing are each composed of a plurality of circular frames
of different diameters.
Description
(a) TECHNICAL FIELD OF THE INVENTION
[0001] The present invention generally relates to a structure of
fan, and more particularly to a circulation fan that uses a
temperature detector to automatically carry out temperature-based
control for operating or shutting down the fan and to allow for
vertical and horizontal rotations of the fan for adjusting
direction of airstream generated by the fan to thereby realize
indoor air circulation and to provide the outside appearance of the
fan with a sense of completeness of aesthetics due to the
arrangement of rotation structure inside a casing.
(b) DESCRIPTION OF THE PRIOR ART
[0002] An electrical fan is often allowed to undergo rotation
clockwise or counterclockwise and it is also available for a fan to
carry out vertical and horizontal rotations of the airstream
driving surface for adjustment of direction of the airstream
driving surface. However, the rotation structure of such a fan is
located outside the fan. Although it is effective to realize the
effect of rotation, yet this influences the completeness of the
outside configuration due to the outside located structure and thus
affecting the aesthetics of the outside appearance of the fan. It
is thus desired to provide a structure of fan that realizes
completeness of the outside configuration of fan and provides
aesthetics.
SUMMARY OF THE INVENTION
[0003] The primary objective of the present invention is to provide
an improved structure of circulation fan, which allows the fan to
undergo vertical and horizontal rotations for adjusting the
direction of airstream generated by the fan thereby realizing an
effect of indoor air circulation and wherein the rotation structure
is arranged inside a casing so that the outside appearance of the
fan shows a sense of completeness of aesthetics.
[0004] The improved structure of circulation fan according to the
present invention comprises a casing that is composed of a front
cover and a rear cover, a base mounted under the casing, and blades
rotatably mounted in the casing, wherein the base contains therein
a control circuit and the control circuit comprises a temperature
detector so that the fan can automatically adjust the rotational
speed thereof according to an indoor temperature and the operation
of the fan can be automatically shut down when the indoor
temperature lowers to a predetermined level and the operation of
the fan is automatically started when the indoor temperature rises
to a predetermined level, thereby keeping the indoor space at the
most comfortable temperature and realizing an effect of energy
saving. Further, the base comprises support frames symmetrically
mounted thereto. The front and rear covers are each composed of a
plurality of circular frames of different diameters. The rear cover
has a lower portion that forms slots corresponding to the support
frames so that the support frames are movably received through the
slots respectively. A connection bar is connected to the rear cover
so that the casing may undergo vertical and horizontal rotations
through the arrangement of the slots for adjusting direction of
airstream generated by the fan, thereby realizing an effect of
indoor air circulation. Further, due to the arrangement of the
rotation structure inside the casing, the outside appearance of the
fan shows a sense of completeness of aesthetics.
[0005] The improved structure of circulation fan according to the
present invention comprises a temperature detector, which allows
the fan to automatically adjust the rotational speed of the fan
according to indoor temperature, whereby the operation of the fan
can be automatically shut down when the indoor temperature lowers
to a predetermined level and the operation of the fan is
automatically started when the indoor temperature rises to a
predetermined level, thereby keeping the indoor space at the most
comfortable temperature and realizing an effect of energy
saving.
[0006] The foregoing objectives 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.
[0007] 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.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a perspective view showing a fan according to the
present invention.
[0009] FIG. 2 is a perspective view of the fan according to the
present invention with a front cover removed to show inside
details.
[0010] FIG. 3 is a side elevational view showing the use of the fan
according to the present invention.
[0011] FIG. 4 is another side elevational view showing the use of
the fan according to the present invention.
[0012] FIG. 5 is another side elevational view showing the use of
the fan according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] The following descriptions are 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.
[0014] Referring to FIGS. 1 and 2, which are perspective views of a
fan according to the present invention, a front cover being removed
in FIG. 2 to illustrate inside details, the fan according to the
present invention comprises a casing 10 that is composed of a front
cover 1 and a rear cover 2, a base 3 mounted under the casing 10,
and blades 4 rotatably mounted in the casing 10. The base 3
contains therein a control circuit and also comprises support
frames 31 symmetrically mounted to a top surface thereof.
[0015] The control circuit comprises a temperature detector and the
control circuit is electrically connected to a setting button 32
and an indicator light 33 that are mounted on a surface of the base
3 for setting of temperature.
[0016] The front and rear covers 1, 2 are each composed of a
plurality of circular frames of different diameters. The rear cover
2 has a lower portion that forms slots 21 corresponding to the
support frames 31 so that the support frames 31 are movably
received through the slots 21 respectively. A connection bar 22
connects between opposite sides of the rear cover 2. The connection
bar 22 rotatably carries the blades 4 and a motor 5 coupled to the
blades 4. Thus, the casing 10 may undergo vertical and horizontal
rotations through movement of the slots 21 along the support frames
31.
[0017] Through assembling of the above discussed components, a
circulation fan is formed, wherein vertical and horizontal
rotations of the casing 10 are selectively performed to adjust the
blowing direction of airstream generated by the fan to realize an
effect of indoor air circulation or an effect of drying clothes.
Further, due to the arrangement of the rotation structure inside
the casing 10, the outside appearance of the fan shows a sense of
completeness of aesthetics.
[0018] The fan according to the present invention employs the
temperature detector arranged in the base 3 to allow the blades 4
of the fan to be operated in such a way that automatic control of
the rotational speed of the blades 4 is realized based on the
temperature set by the setting button 32. When the indoor
temperature is lowered to the set value, the operation of the fan
is automatically shut down. When the indoor temperature rises to a
predetermined level, the fan is automatically started to keep the
indoor space at a most comfortable temperature and also shows an
effect of energy saving.
[0019] Referring to FIG. 3, which shows the use of the fan
according to the present invention, when viewed together with FIG.
2, it is appreciated that when the present invention is put into
use in a normal condition, the casing 10 can be maintained in a
vertical condition, where the support frames 31 of the base 3 are
located at lower ends of the slots 21 of the rear cover 2, whereby
airstream is generated to move in a horizontal direction and the
blades 4 of the fan is operated so that the rotational speed of the
blades 4 can be automatically adjusted according to the temperature
level set by the setting button 32.
[0020] Referring to FIGS. 4 and 5, another way of use of the
present invention is shown, when viewed together with FIG. 1,
besides being set in a vertical condition to drive airstream in a
horizontal direction, the casing 10 of the fan can be manipulated
to have the casing 10 undergoing vertical rotation by having the
slots 21 moved along the support frames 31 according to different
requirements (such as being set in alignment with the direction of
air conditioner or blowing air upward for drying clothes), whereby
the support frames 31 of the base 3 are located at upper ends of
the slots 21 of the rear cover 3 to drive airstreams upward, so
that the practical value of the fan is enhanced.
[0021] In summary, the present invention provides a fan that
comprises a casing forming slots to mate support frames mounted a
base, whereby the fan is allowed to do vertical and horizontal
rotations for changing moving directions of airstream generated by
the fan for realizing indoor air circulation. Further, since the
rotation structure is contained inside the casing, the outside
appearance of the fan shows a sense of completeness of
aesthetics.
[0022] 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.
[0023] 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.
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