U.S. patent application number 14/153448 was filed with the patent office on 2014-07-24 for adapter structure of ventilating fan.
The applicant listed for this patent is Panasonic Corporation, PANASONIC ECOLOGY SYSTEMS GUANGDONG CO., LTD.. Invention is credited to Shouyong Gao, Min Long, Daisuke Tsubosa, Jingtao Yang, Bodong Zhong.
Application Number | 20140206276 14/153448 |
Document ID | / |
Family ID | 48734159 |
Filed Date | 2014-07-24 |
United States Patent
Application |
20140206276 |
Kind Code |
A1 |
Zhong; Bodong ; et
al. |
July 24, 2014 |
ADAPTER STRUCTURE OF VENTILATING FAN
Abstract
An adapter structure of a ventilating fan includes an oval metal
adapter and an oval metal shutter provided in the metal adapter
having a shape corresponding to the oval metal adapter. A symmetry
axis of a longitudinal cross-section of the oval metal shutter in
the horizontal direction is a major axis, and a symmetry axis in
the vertical direction is a minor axis. The shutter rotates through
a rotating shaft in the metal adapter, a curve point is provided
between a projection point of a center line of the rotating shaft
on the minor axis and a tail of the shutter a curved portion of the
shutter is formed by curving the shutter from the curve point to an
inner surface side of the shutter along the minor axis. Vibration
of the shutter is suppressed in a position where the shutter is
opened and turbulent flow is prevented.
Inventors: |
Zhong; Bodong; (Foshan,
CN) ; Long; Min; (Foshan, CN) ; Gao;
Shouyong; (Foshan, CN) ; Yang; Jingtao;
(Foshan, CN) ; Tsubosa; Daisuke; (Aichi,
JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
PANASONIC ECOLOGY SYSTEMS GUANGDONG CO., LTD.
Panasonic Corporation |
FOSHAN, GUANGDONG
Osaka |
|
CN
JP |
|
|
Family ID: |
48734159 |
Appl. No.: |
14/153448 |
Filed: |
January 13, 2014 |
Current U.S.
Class: |
454/317 |
Current CPC
Class: |
F24F 13/24 20130101;
F24F 13/14 20130101 |
Class at
Publication: |
454/317 |
International
Class: |
F24F 13/14 20060101
F24F013/14 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 18, 2013 |
CN |
201320029570.4 |
Claims
1. An adapter structure of a ventilating fan, comprising: an oval
metal adapter and an oval metal shutter provided in the metal
adapter and being cooperated with a shape of the oval metal
adapter, wherein a symmetry, axis of a longitudinal cross-section
of the oval metal shutter in the horizontal direction is a major
axis, and a symmetry axis in the vertical direction is a minor
axis, the shutter is configured to be rotatable through a rotating
shaft in the metal adapter, wherein: a curve point is provided
between a projection point of a center line of the rotating shaft
on the minor axis and a tail of the shutter, and a curve portion of
the shutter is formed by curving the shutter from the curve point
to an inner surface side of the shutter along the minor axis.
2. The adapter structure according to claim 1, wherein: the curve
point is located on an upstream side where a distance is one third
from the rotate shaft to the tail.
3. The adapter structure according to claim 1, wherein: a rib is
formed on the minor axis of the shutter, and a rib also is formed
on a projection of the center line of the rotate shaft on the
shutter.
4. The adapter structure according to claim 2, wherein: a rib is
formed on the minor axis of the shutter, and a rib also is formed
on a projection of the center line of the rotate shaft on the
shutter.
5. The adapter structure according to claim 1, wherein: the
rotating shaft is formed on two inner sides of the metal adapter
integrally, and the shutter is formed by resin of a plate body, two
clamp parts are provided for clamping the rotating shaft and
erected from left and right edges of the plate body to an outside
surface.
6. The adapter structure according to claim 2, wherein: the
rotating shaft is formed on two inner sides of the metal adapter
integrally, and the shutter is formed by resin of a plate body, two
clamp parts are provided for clamping the rotating shaft and
erected from left and right edges of the plate body to an outside
surface.
7. The adapter structure according to claim 1, wherein: grooves are
provided in two inner sides of the metal adapter, and the shutter
is formed by resin of a plate body, a protrusion is provided on
both sides of the shutter integrally, when the shutter is mounted,
the shutter is deformed slightly so that the protrusion is fitted
into the grooves to form a rotating shaft.
8. The adapter structure according to claim 2, wherein: grooves are
provided in two inner sides of the metal adapter, and the shutter
is formed by resin of a plate body, a protrusion is provided on
both sides of the shutter integrally, when the shutter is mounted,
the shutter is deformed slightly so that the protrusion is fitted
into the grooves to form a rotating shaft.
9. The adapter structure according to claim 5, wherein: Reinforcing
parts are provided on the clamp parts for reinforcing
themselves.
10. The adapter structure according to claim 6, wherein:
Reinforcing parts are provided on the clamp parts for reinforcing
themselves.
Description
[0001] This application claims and enjoys the benefit and priority
from Chinese Patent Application No. 201320029570.4, filed on Jan.
18, 2013, the disclosure of which is incorporated herein in its
entirety by reference.
FIELD OF THE INVENTION
[0002] The present application relates to a adapter structure, more
particularly, to a adapter structure of a ventilating fan.
DESCRIPTION OF THE RELATED ART
[0003] The conventional ventilating fan has shutters for opening or
closing the air path of the ventilating fan so as to prevent
outside foreign matter into the ventilating fan or outside air into
the ventilating fan. FIG. 1 is a schematic view showing a adapter
structure of a ventilating fan in the prior art. As shown in FIG.
1, a ventilating fan is disclosed by Japanese Patent Publication
No. 2001-33088, the adapter structure 1 of the ventilating fan
comprises: a metal adapter 2 having an oval cross section for
increasing an air path area and a shutter 3 provided in the metal
adapter 2; the metal adapter 2 is divided into two parts: an air
inlet 4 and an air outlet 5.
[0004] FIGS. 2A and 2B are schematic views showing another adapter
structure of a ventilating fan in the prior art. As shown in FIG.
2, a shutter 10 of the ventilating fan is provided to be cooperated
with a shape of an oval metal adapter 6, of which a symmetry axis
in the horizontal direction is a major axis 7, and a symmetry axis
in the vertical direction is a minor axis 8. The metal shutter 10
is constituted by a flat plate 17 and a flange 12 with bending
edges, and a rivet 9 is provided at an inner wall of the oval air
outlet of the metal adapter 6, for reducing the noise caused by
collision between the metal shutter 10 and the metal rivet 9, a
rubber ring 11 is provided outside of the rivet 9 and then the
shutter 10 is mounted on the rubber ring 11. Otherwise, a limit
structure 13 is provided in the adapter 6 for limiting the shutter
10 within a maximum opening position and closing position, and for
reducing the noise caused by collision between the metal shutter 10
and the limit structure 13, a sponge 11 is provided in a position
where the shutter 10 collides with the limit structure 13.
[0005] An oval metal shutter 10 is provided within the metal
adapter 6 to be cooperated with the shape of the metal adapter 6,
comparing with a round shutter, an imaginary adapter line 20
between the rotatable axis 15 of the oval shutter 10 is more closer
to a center of the shutter 10 in the horizontal direction, which is
the position of the major axis 7, therefore, the part below the
imaginary adapter line 20 between the rotatable axis 15 of the oval
shutter 10 is much shorter. As a result, an area for bearing
buoyant force of opening the shutter 10 is small. In some
circumstances, after the shutter 10 is opened by the air from the
ventilating fan, the buoyant force of opening the shutter 10 is not
sufficient, and it causes that the shutter 10 is vibrated
largely.
[0006] Preferably, when the shutter is opened, it is maintained in
the horizontal direction. When the ventilating fan operates, the
shutter is vibrated, and it is not maintained in the horizontal
direction, the air towards the outdoor is blocked by the shutter,
therefore the resistance in the air path is increased, under this
circumstance, in order to ensure the required air quantity, the
load of the fan must be increased.
SUMMARY OF THE INVENTION
[0007] An object of the present invention is to provide an adapter
structure for suppressing the vibration of the shutter in a
position where the shutter is opened and preventing turbulent flow
so as to improve the performance of the fan.
[0008] In order to achieve an aspect of above objects, the present
invention provides a adapter structure of a ventilating fan, the
adapter structure comprises: an oval metal adapter and an oval
metal shutter provided in the metal adapter and being cooperated
with a shape of the oval metal adapter, wherein a symmetry axis of
a longitudinal cross-section of the oval metal shutter in the
horizontal direction is a major axis, and a symmetry axis in the
vertical direction is a minor axis, the shutter is configured to be
rotatable through a rotating shaft in the metal adapter, and a
curve point is provided between a projection point of a center line
of the rotating shaft on the minor axis and a tail of the shutter,
a curve portion of the shutter is formed by curving the shutter
from the curve point to an inner surface side of the shutter along
the minor axis.
[0009] The curve point is located on an upstream side where a
distance is one third from the rotate shaft to the tail.
[0010] A rib is formed on the minor axis of the shutter, and a rib
also is formed on a projection of the center line of the rotate
shaft on the shutter.
[0011] The rotating shaft is formed on two inner sides of the metal
adapter integrally, and the shutter is formed by resin of a plate
body, two clamp parts are provided for clamping the rotating shaft
and erected from left and right edges of the plate body to an
outside surface.
[0012] Grooves are provided at two inner sides of the metal
adapter, and the shutter is formed by resin of a plate body, a
protrusion is provided on both sides of the shutter integrally,
when the shutter is mounted, the shutter is deformed slightly so
that the protrusion is fitted into the grooves to form a rotating
shaft.
[0013] Reinforcing parts are provided on the clamp parts for
reinforcing themselves.
[0014] The advantage of the present invention is that the shutter
is provided to be light and is opened easily so as to reduce noise
and ensure air quantity; and the present invention may reduce the
cost, lower the working time and improve quality and reliability of
the product. The present invention may suppress the vibration of
the shutter in a position where the shutter is opened and prevent
turbulent flow so as to improve quality and reliability of the
product.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is a schematic view of an adapter structure of a
ventilating fan in the prior art;
[0016] FIGS. 2A and 2B are schematic views of other adapter
structure of a ventilating fan in the prior art;
[0017] FIG. 3 is an overall schematic view of the assembled
ventilating fan according to the embodiment of the present
invention;
[0018] FIG. 4 is a side view of a shutter according to the
embodiment of the present invention;
[0019] FIG. 5 is a front view of a shutter according to the
embodiment of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] FIG. 3 is an overall schematic view of the assembled
ventilating fan according to the embodiment of the present
invention; FIG. 4 is a side view of a shutter according to the
embodiment of the present invention; FIG. 5 is a front view of a
shutter according to the embodiment of the present invention.
[0021] As shown in figures, an adapter structure 100 of a
ventilating fan according to the present invention comprises: an
oval metal adapter 200 and an oval metal shutter 300 provided in
the metal adapter 200 and being cooperated with a shape of the oval
metal adapter 200, the shutter 300 is formed by resin of a plate
body, two clamp parts 370 are provided for clamping the rotating
shaft 230 and erected from left and right edges of the plate body
to an outside surface. The shutter 300 is rotated in the metal
adapter 230 by the rotating shafts 230.
[0022] The present application gives the following definitions:
under the statement of the shutter 300 closing, a surface located
at an air inlet 210 side of the metal adapter 200 is defined as an
inner surface 320, and a surface located at an air outlet 220 side
of the metal adapter 200 is defined as an outer surface 330, parts
over the rotating shafts 230 of the shutter 300 is defined as an
upper part 340 of the shutter 300, parts under the rotating shafts
230 of the shutter 300 is defined as an lower part 350 of the
shutter 300, an end of the lower part 350 of the shutter 300 is
defined as a tail 360, a symmetry axis of a longitudinal
cross-section of the oval metal shutter 300 in the horizontal
direction is defined as a major axis 375, and a symmetry axis in
the vertical direction is defined as a minor axis 380.
[0023] As the rotating shafts 230 according to the present
invention are provided on both sides of the shutter 300, the shafts
bodies are not located on the center of the shutter 300, and an
imagination line connecting and extending between both sides of the
rotating shafts 230 is defined as a center line of the rotating
shafts 230. Alternatively in the present invention the rotating
shafts 230 may be one shaft running through both sides of the
shutter 300. A projection of a center line of the rotating shaft
230 on the shutter 300 intersects the minor axis 380, and the
intersection point is defined as a projection point 383, a curve
point 382 is provided between the projection point 383 of the
center line of the rotating shaft 230 on the minor axis 380 and the
tail 360 of the shutter 300, and a curve portion 390 is formed by
curving the shutter 300 from the curve point 382 to the inner
surface 320 side of the shutter along the minor axis 380.
[0024] When the ventilating fan operates, air is flowing from the
air inlet 210 of the metal adapter 200 to the shutter 300, and the
shutter 300 is opened. Before the air reaches the curve point 382,
air density on the lower side of the inner surface 320 of the
shutter 300 is equal to the air density on the upper side of the
outer surface 330. As the curve portion 390 is formed by curving
the shutter 300 from the curve point 382 to the inner surface 320
side of the shutter 300 along the minor axis 380, air density on
the lower side of the inner surface 320 of the shutter 300 starts
to increase from the curve point 382, and the air density increases
as a radian of the curve portion 390 increases, and air density on
the upper side of the outer surface 330 of the shutter 300 starts
to decrease from the curve point 382, and the air density decreases
as a radian of the curve portion 390 increases, so more closer
toward the tail 360 of the shutter 300 the position is, more larger
the air buoyant is, the shutter 300 is stable by virtue of the
curve portion 390 at the opening position and the vibration of the
shutter 300 is suppressed.
[0025] The shutter 300 is formed smoothly from the curve point 382
to the tail 360 by the curve portion 390, so that the air flowing
is guided to flow the outdoor smoothly, and the turbulent is
avoided.
[0026] In the embodiment, the curve point 382 is located on an
upstream side where a distance is a third from the rotate shaft 230
to the tail 360. With the above structure, air density on the lower
side of the inner surface 320 of the shutter 300 starts to increase
at the upstream side where the distance is one third from the
rotating shaft to the tail, so that the air buoyant applied on the
inner surface 320 of the shutter 300 is efficient, and the
vibration of the shutter 300 at the opening position is suppressed,
and the opening degree of the shutter 300 is maintained. Comparing
the shutter with curving edges in the prior art, the air flowing in
the present invention is more smooth and the air flowing quantity
is increased.
[0027] The shutter 300 according to the present invention is formed
by resin injection molding as a whole. With injection molding, it
is not necessary to use the rubber ring for mounting the shutter on
the metal adapter, instead, clamp parts 370 are provided vertically
on the outer surface 330 of the shutter 300, and the clamp parts
370 and shutter 300 are formed as a whole, clamp holes 371 are
provided on the clamp parts 370, a rivet 201 is mounted on the
inner wall of the metal adapter 200. When the shutter 300 is
mounted, the clamp parts are elastically deformed so that the clamp
hole is cooperated with the rivet 201 on the inner wall of the
metal adapter 200, and the mount of the shutter 300 is finished.
Additionally, reinforcing parts 372 are provided on the clamp parts
370 for reinforcing themselves. Specifically, the reinforcing parts
372 are shaped as a triangle when the shutter 300 is opened
horizontally, and are configured to have two reinforcing parts to
clamp the rivet 201. Due to the support of the Reinforcing parts
372, the rivet 201 is clamped in the clamp parts 371 so that then
the shutter 300 is mounted on the metal adapter 200, the clamp
parts 370 is vertical to the upper surface of the shutter 300.
[0028] As the shutter 300 is formed by resin injection molding, the
noise caused by collision between the metal shutter and the limit
structure 400 of the metal adapter 200 is reduced, and the sponge
is not necessary. Therefore, the present invention is advantageous
in reducing the cost, lowering the working time. Further, as the
resin is lighter than metal the shutter 300 is light and opened
easily so as to reduce noise and ensure air quantity.
[0029] A rib 381 is formed on the minor axis 380 of the shutter 300
according to the present invention, and a rib 231 also is formed on
a projection of the center line of the rotate shaft 230 on the
shutter 300.
[0030] As the shutter 300 is formed by resin injecting molding as a
plate body, the shutter is designed to be light and thin. Though
the plate body is provided to be thin, as the rib 381 is formed on
the minor axis 380, the curve portion 390 is provided on the plate
body surely. Though the plate body is provided to be thin, as the
rib 231 also is formed on the projection of the center line of the
rotate shaft 230 on the shutter 300, the strength of the shutter
300 is efficient for mounting after the shutter is elastically
deformed.
[0031] Additionally, the rotating shaft 230 of the shutter is
provided at the outer surface side of the plate body, even though
the shape of the metal adapter 200 is oval, it may increase air
flowing quantity in the upper side of the outer surface 330 of the
shutter 300 when the shutter 300 is opened. Accordingly it helps to
equalize the air flowing quantity in the lower side of the inner
surface, and it is easy to maintain the shutter in a status of
being opened horizontally.
[0032] In the embodiment, the rotating shaft 230 is integrated to
be arranged on the metal adapter 200. Alternatively, grooves are
provided in two inner sides of the metal adapter 200, and a
protrusion is provided on both sides of the shutter 300 integrally.
When the shutter 300 is mounted, the shutter 300 is deformed
slightly so that the protrusion is fitted into the grooves so as to
form a rotating shaft. Those skills in the art may understand that
rotating shaft of the present invention can be modified or some
technical features are replaceable with equivalents without
departing from the spirits of the technical solution of the present
invention, which should be considered as falling into the scope of
the present invention.
* * * * *