U.S. patent application number 14/883047 was filed with the patent office on 2016-04-21 for air-guiding cover and fan having the same.
The applicant listed for this patent is Cheng Ming SU. Invention is credited to Cheng Ming SU.
Application Number | 20160108929 14/883047 |
Document ID | / |
Family ID | 53187744 |
Filed Date | 2016-04-21 |
United States Patent
Application |
20160108929 |
Kind Code |
A1 |
SU; Cheng Ming |
April 21, 2016 |
AIR-GUIDING COVER AND FAN HAVING THE SAME
Abstract
The present invention relates to provide an air-guiding cover,
comprising: an inner ring; an outer ring being arranged around the
inner ring and defining a windward plane between the outer ring and
the inner ring; and a plurality of air-guiding fins being arranged
in the inner ring. The air-guiding fins have an inclination with
respect to a normal axis of the windward plane, and the inclination
increases progressively as the air-guiding fins extend from the
inner ring toward the outer ring.
Inventors: |
SU; Cheng Ming; (Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SU; Cheng Ming |
Taipei City |
|
TW |
|
|
Family ID: |
53187744 |
Appl. No.: |
14/883047 |
Filed: |
October 14, 2015 |
Current U.S.
Class: |
415/177 ;
415/189; 415/192 |
Current CPC
Class: |
F04D 29/544 20130101;
F04D 29/582 20130101; F04D 25/082 20130101; F24H 3/0417 20130101;
F04D 29/703 20130101 |
International
Class: |
F04D 29/44 20060101
F04D029/44; F04D 29/42 20060101 F04D029/42; F04D 29/28 20060101
F04D029/28; F04D 29/62 20060101 F04D029/62; F04D 17/08 20060101
F04D017/08; F04D 25/02 20060101 F04D025/02 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 15, 2014 |
TW |
103218257 |
Claims
1. An air-guiding cover, comprising: an inner ring; an outer ring
being arranged around the inner ring and defining a windward plane
together with the inner ring therebetween; and a plurality of
air-guiding fins being arranged in the windward plane in a
whirlpool-like pattern, wherein the air-guiding fins have an
inclination with respect to a normal axis of the windward plane,
and the inclination increases progressively as the air-guiding fins
extend from the inner ring toward the outer ring.
2. The air-guiding cover of claim 1, wherein the inclination of the
air-guiding fins at where the air-guiding fins joint the inner ring
is about 0 degree.
3. The air-guiding cover of claim 1, wherein the inclination of the
air-guiding fins at where the air-guiding fins joint the outer ring
is about 45 degrees.
4. The air-guiding cover of claim 1, further comprising a fastening
ring located between the inner ring and the outer ring and
connected to the air-guiding fins, respectively.
5. The air-guiding cover of claim 1, wherein the outer ring is
provided with one or plural clips that are connected to an external
structure.
6. A fan, comprising: a housing comprising an air inlet portion, an
air outlet portion, and a guiding space defined between the air
inlet portion and the air outlet portion; a rotating device being
located in the guiding space and aligned with the air outlet
portion, the rotating device comprising a motor fixedly installed
in the housing and a blade connected to the motor and driven by the
motor to rotate; and an air-guiding cover being provided at the air
outlet portion and comprising an inner ring, an outer ring being
arranged around the inner ring, a plurality of air-guiding fins
being arranged between the outer ring and the inner ring in a
whirlpool-like pattern, the outer ring and the inner ring defining
a windward plane therebetween, the air-guiding fins having an
inclination with respect to a normal axis of the windward plane,
and the inclination increasing progressively as the air-guiding
fins extend from the inner ring toward the outer ring.
7. The fan of claim 6, wherein the fan comprises a heating device
located in the guiding space and serving to heat air flow passing
therethrough.
8. The fan of claim 6, wherein the rotating device comprises a
heat-insulating tube mounted around the motor.
9. The fan of claim 6, wherein the housing comprises an air
entrance located behind the motor.
10. The fan of claim 6, wherein the inclination of the air-guiding
fins at where the air-guiding fins joint the inner ring is about 0
degree.
11. The fan of claim 6, wherein the inclination of the air-guiding
fins at where the air-guiding fins joint the outer ring is about 45
degrees.
12. The fan of claim 6, further comprising a fastening ring located
between the inner ring and the outer ring and connected to the
air-guiding fins, respectively.
13. The fan of claim 6, wherein the outer ring is provided with one
or plural clips that are connected to the housing.
14. The air-guiding cover of claim 2, wherein the inclination of
the air-guiding fins at where the air-guiding fins joint the outer
ring is about 45 degrees.
15. The fan of claim 10, wherein the inclination of the air-guiding
fins at where the air-guiding fins joint the outer ring is about 45
degrees.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Technical Field
[0002] The present invention relates to an air-guiding cover and a
fan having the air-guiding cover, wherein the fan using the
air-guiding cover generates conical cyclone.
[0003] 2. Description of Related Art
[0004] Electric fans have long been widely used in life to improve
ventilation and cooling the ambient temperature or alternatively
warm the ambient temperature when working with electric heaters.
Electric fans are easy to install and applicable to various
conditions, and thus have become a "must have" appliance in almost
all households.
[0005] There are many kinds of electric fans commercially
available, including stand fans, ventilation fans and hanging fans.
For maximizing its active area or coverage, an electric fan is
usually equipped with an oscillating device that allows the fan to
rotate from side to side while blowing. However, the height of an
electric fan also poses limitation to its active area, so it is
also desired to make structural improvement on a fan's air-guiding
cover so as to optimize the circulating efficiency of the fan.
[0006] FIG. 1 depicts a conventional air-guiding cover that
comprises curved air-guiding fins L. The air-guiding fins L guide
air passing therethrough to form a spiral cyclone and focus on a
particular direction with enhanced intensity. However, the active
area of wind such guided is relatively small and the strong eddy
caused by the spiral cyclone tends to make people affected feel
uncomfortable. Hence, how to improve the existing air-guiding
covers in terms of active area has become an issue for the related
industry to address.
SUMMARY OF THE INVENTION
[0007] In view of this, the objective of the present invention is
to provide an air-guiding cover and a fan having the air-guiding
cover, wherein the fan using the air-guiding cover generates
conical cyclone.
[0008] To achieve the goal mentioned above, an embodiment of the
present invention is to provide an air-guiding cover, comprising:
an inner ring; an outer ring being arranged around the inner ring;
and a plurality of air-guiding fins being arranged in the inner
ring and outer ring. Defining a windward plane between the outer
ring and the inner ring. The air-guiding fins have an inclination
with respect to a normal axis of the windward plane, and the
inclination increases progressively as the air-guiding fins extend
from the inner ring toward the outer ring.
[0009] Preferably, the inclination of the air-guiding fins at where
the air-guiding fins joint the inner ring is about 0 degree.
[0010] Preferably, the inclination of the air-guiding fins at where
the air-guiding fins joint the outer ring is about 45 degrees.
[0011] Preferably, the air-guiding cover further comprising a
fastening ring located between the inner ring and the outer ring
and connected to the air-guiding fins, respectively.
[0012] Preferably, the outer ring is provided with one or plural
clips that are connected to an external structure.
[0013] Another embodiment of the present invention is to provide a
fan, comprising: a housing comprising an air inlet portion, an air
outlet portion, and a guiding space defined between the air inlet
portion and the air outlet portion; a rotating device being located
in the guiding space and aligned with the air outlet portion, the
rotating device comprising a motor fixedly installed in the housing
and a blade connected to the motor and driven by the motor to
rotate; and an air-guiding cover being provided at the air outlet
portion and comprising an inner ring, an outer ring being arranged
around the inner ring, a plurality of air-guiding fins being
arranged between the outer ring and the inner ring in a
whirlpool-like pattern, the outer ring and the inner ring defining
a windward plane therebetween, the air-guiding fins having an
inclination with respect to a normal axis of the windward plane,
and the inclination increasing progressively as the air-guiding
fins extend from the inner ring toward the outer ring.
[0014] Preferably, the fan comprises a heating device located in
the guiding space and serving to heat air flow passing
therethrough.
[0015] Preferably, the rotating device comprises a heat-insulating
tube mounted around the motor.
[0016] Preferably, the housing comprises an air entrance located
behind the motor.
[0017] Preferably, the inclination of the air-guiding fins at where
the air-guiding fins joint the inner ring is about 0 degree.
[0018] Preferably, the inclination of the air-guiding fins at where
the air-guiding fins joint the outer ring is about 45 degrees.
[0019] Preferably, the fan further comprising a fastening ring
located between the inner ring and the outer ring and connected to
the air-guiding fins, respectively.
[0020] Preferably, the outer ring is provided with one or plural
clips that are connected to the housing.
[0021] The present invention has the following beneficial technical
effects superior to the prior art:
[0022] 1. Different from the prior-art air-guiding plate that only
helps to form small and focused cylindrical cyclone, the disclosed
air-guiding cover helps a fan to generate conical cyclone that
covers widely and effectively promotes indoor air circulation.
[0023] 2. The fan of the present invention is equipped with a
heating device and capable of generating widely distributed warm
air flow when working with the disclosed air-guiding cover. Thus
the fan is a dual-purpose fan that is effective in both cooling and
warming.
[0024] 3. The fan of the present invention uses the heat-insulating
tube to protect its motor from overheat caused by the heating
device.
BRIEF DESCRIPTION OF THE DRAWINGS
[0025] FIG. 1 is a front view of a conventional air-guiding
cover.
[0026] FIG. 2 is a front view of an air-guiding cover of the
present invention.
[0027] FIG. 3 is a perspective view of the air-guiding cover of the
present invention.
[0028] FIG. 4 is a schematic drawing illustrating a clip of the
disclosed air-guiding cover used for fastening.
[0029] FIG. 5 is a perspective view of a fan having the air-guiding
cover of the present invention.
[0030] FIG. 6 is a cross-sectional view of the fan of FIG. 5.
[0031] FIG. 7 is a back view of the fan of FIG. 5.
[0032] FIG. 8 is a graph showing coverage of a fan having the
air-guiding cover of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0033] Hereinafter, illustrative embodiments and examples of the
present disclosure will be described in detail with reference to
the accompanying drawings so that inventive concept may be readily
implemented by those skilled in the art. Moreover, the utility
model in the drawings for convenience of explanation, the ratio is
not necessarily the actual scale, while exaggerating the situation,
these drawings and the proportion of non-intended to limit the
scope of the utility model.
[0034] The detailed configuration of the air-guiding cover of the
present invention will be further discussed with reference to the
accompanying drawings. As referred first, FIG. 2 is a front view of
an air-guiding cover of the present invention and FIG. 3 is a
perspective view of the air-guiding cover of the present
invention.
[0035] The present invention provides an air-guiding cover 100,
which comprises an inner ring 11, an outer ring 12 being arranged
around the inner ring 11, a plurality of air-guiding fins 10 being
arranged between the inner ring 11 and the outer ring 12 in a
whirlpool-like pattern, and a fastening ring 14 located between the
inner ring 11 and the outer ring 12 and connected to the
air-guiding fins 10, respectively.
[0036] Further referring to FIG. 3 and FIG. 4, the outer ring 12 is
peripherally provided with one or plural clips 15 for combining
with an external structure. The clips 15 allow the disclosed
air-guiding cover 100 to be conveniently attached to or detached
from a corresponding combining mechanism K. The clip 15 has
inclined surface at its front end for guiding the combining
mechanism K into a retaining notch where the combining mechanism K
is held. In practical use, the clip 15 may be placed in a space
with its ceiling and floor fixed. By clockwise rotating the
disclosed air-guiding cover 100, the clip 15 clips and holds the
combining mechanism K, so as to provide desired fastening (as shown
in FIG. 4), and by rotating the disclosed air-guiding cover 100
anticlockwise, the disclosed air-guiding cover 100 is disassembled
from the combining mechanism K, so as to achieve convenient
assembling and disassembling.
[0037] Also referring to FIG. 6, a windward plane 13 is defined
between the outer ring 12 and the inner ring 11. The air-guiding
fins 10 have an inclination with respect to a normal axis (i.e. the
direction in which air flows) of the windward plane 13, and the
inclination increases progressively as the air-guiding fins 10
extend from the inner ring 11 toward the outer ring 12, wherein the
inclination at where the air-guiding fins 10 joint the inner ring
11 is about 0 degree and at where the air-guiding fins 10 joint the
outer ring 12 is about 45 degrees.
[0038] Further description of the air-guiding cover and a fan
having it is given below with reference to FIG. 5, FIG. 6 and FIG.
7, which are a perspective view, a cross-sectional view and a back
view of a fan having the air-guiding cover of the present
invention, respectively.
[0039] The present invention provides an air-guiding cover and a
fan 200 having it. The fan 200 comprises a housing 20, a rotating
device 30 being contained in the housing 20, the air-guiding cover
100 attached to one side of the housing 20, and a heating device 40
installed inside the housing 20.
[0040] The housing 20 comprises an air inlet portion 21, an air
outlet portion 22, a guiding space 23 located between the air inlet
portion 21 and the air outlet portion 22, and an air entrance 24.
The air entrance 24 is located at the back of the rotating device
30 for guiding air into the housing 20, thereby preventing the
rotating device 30 from overheat and heat-incurred damage.
[0041] The heating device 40 is placed in the guiding space 23 for
heating air passing therethrough, so as to generate warm air that
is then sent out through the air outlet portion 22. The heating
device 40 may be an infrared heater, a far infrared ceramic heating
plate, a halogen heater or other devices capable of converting
electricity into thermal energy. The present invention provides no
limitation thereto.
[0042] The rotating device 30 is installed in the guiding space 23
and aligned with the air outlet portion 22. The rotating device 30
comprises a motor 31 fixedly installed in the housing 20, a blade
32 connected to the motor 31 and driven by the motor 31 to rotate,
and a heat-insulating tube 33 mounted around the motor 31. The
motor 31 may be a DC motor, an AC motor, a synchronous motor or
other devices powered to rotate. The present invention provides no
limitation thereto. The heat-insulating tube 33 prevents the motor
31 from being affected and damaged by the warm air of the heating
device 40. The heat-insulating tube 33 has its rear end connected
to the air entrance 24 and has its front end formed as an opening.
When the rotating device 30 operates, external air around the
housing 20 is drawn into the heat-insulating tube 33 through the
air entrance 24 for cooling the motor 31.
[0043] The disclosed air-guiding cover 100 is provided at the air
outlet portion 22. The disclosed air-guiding cover 100, as
described previously, comprises an inner ring 11, an outer ring 12
being arranged around the inner ring 11, a plurality of air-guiding
fins 10 being arranged between the inner ring 11 and the outer ring
12 in a whirlpool-like pattern, and a fastening ring 14 located
between the inner ring 11 and the outer ring 12 and connected to
the air-guiding fins 10, respectively.
[0044] The outer ring 12 is peripherally provided with one or
plural clips 15 for combining with an external structure. The clips
15 allow the disclosed air-guiding cover 100 to be conveniently
attached to or detached from the air outlet portion 22.
[0045] A windward plane 13 is defined between the outer ring 12 and
the inner ring 11. The air-guiding fins 10 have an inclination with
respect to a normal axis of the windward plane 13, and the
inclination increases progressively as the air-guiding fins 10
extend from the inner ring 11 toward the outer ring 12, wherein the
inclination at where the air-guiding fins 10 joint the inner ring
11 is about 0 degree and at where the air-guiding fins 10 joint the
outer ring 12 is about 45 degrees.
[0046] Please also refer to FIG. 8, which is a graph showing
coverage of a fan having the air-guiding cover of the present
invention.
[0047] In a preferred embodiment of the present invention, the
motor 31 drives the blade 32 to rotate, so that air at the air
inlet portion 21 is drawn into the guiding space 23. The blade 32
then deliver the air to the disclosed air-guiding cover 100 at the
air outlet portion 22, so as to make the air spread outward and
form conical cyclone.
[0048] Through experiments, it is found that the conventional
air-guiding cover has its cyclone limited to the size of its outer
ring because the air-guiding fins L remain perpendicular to the
normal axis of its windward plane without any outward
inclination.
[0049] Differently, the air-guiding fins 10 of the present
invention have the inclination with respect to the normal axis of
the windward plane progressively increasing from the inner ring to
the outer ring. Since the inclination at where the air-guiding fins
10 joint the inner ring 11 is about 0 degree, the generated conical
cyclone also preserves the focused swirl as generated by the
conventional turbo fan. As the inclination of the air-guiding fins
10 progressively increases up to about 45 degrees at where the
air-guiding fins 10 joints the outer ring, the generated cyclone
forms a conical shape that spread outward in all directions with an
expanding angle of 45 degrees. In the conical cyclone, at a site
being one meter from the windward plane, its diameter reaches 1.98
meters, and at two meters from the windward plane, its diameter
reaches 3.64 meters. For the cases of 3 and 4 meters, its diameter
reaches 5.32 and 7 meters, respectively.
[0050] To sum up, the disclosed air-guiding cover 100 utilizes the
outward progressively increasing inclination to guide air to form
an outward expanding conical cyclone, thereby significantly
increasing the active area of the fan. Besides, the fan 200 having
the disclosed air-guiding cover 100 when equipped with a heating
device can optionally generate warm air flow. This allows the fan
200 to act as both a cooling fan and a warming fan, and makes it a
whole-year useful appliance, thereby significantly improving the
applicability of the fan.
[0051] While example embodiments have been disclosed herein, it
should be understood that other variations may be possible. Such
variations are not to be regarded as a departure from the spirit
and scope of example embodiments of the present application, and
all such modifications as would be obvious to one skilled in the
art are intended to be included within the scope of the following
claims.
* * * * *