U.S. patent application number 11/137662 was filed with the patent office on 2006-11-30 for composite type transverse flow fan.
Invention is credited to Wen-Hao Liu.
Application Number | 20060269392 11/137662 |
Document ID | / |
Family ID | 37463571 |
Filed Date | 2006-11-30 |
United States Patent
Application |
20060269392 |
Kind Code |
A1 |
Liu; Wen-Hao |
November 30, 2006 |
Composite type transverse flow fan
Abstract
A composite type transverse flow fan has a driving device and a
fan blade module, which is attached to the driving device. The fan
blade module further includes at least a rotating shaft, at least a
fan blade part and at least a fan frame. The fan blade module
further includes at least a rotating shaft, at least a fan blade
part and at least a fan frame. The rotating shaft has a first
coupling part and a second coupling part and both of the coupling
parts detachably engage with each other. The fan blade part is
attached to the rotating shaft. The fan frame is attached with the
rotating shaft and provides a first joining part and a second
joining part and both the joining parts detachably engage with each
other. Once the driving device is in operation, the fan blade part
is capable of rotates in the fan frame.
Inventors: |
Liu; Wen-Hao; (Taipei,
TW) |
Correspondence
Address: |
G. LINK Co., LTD
3550 Bell Road
MINOOKA
IL
60447
US
|
Family ID: |
37463571 |
Appl. No.: |
11/137662 |
Filed: |
May 26, 2005 |
Current U.S.
Class: |
415/53.1 |
Current CPC
Class: |
F04D 17/04 20130101;
F04D 29/626 20130101; F04D 25/166 20130101; F04D 25/0613
20130101 |
Class at
Publication: |
415/053.1 |
International
Class: |
F04D 5/00 20060101
F04D005/00 |
Claims
1. A composite type transverse flow fan, comprising: a driving
device; and a fan blade module, being attached to the driving
device; wherein the fan blade module further comprises at least a
rotating shaft, providing a first coupling part and a second
coupling part and both of the coupling parts detachably engaging
with each other; at least a fan blade part, being attached to the
rotating shaft; and at least a fan frame, being attached with the
rotating shaft and providing a first joining part and a second
joining part and both the joining parts detachably engaging with
each other. whereby, once the driving device is in operation, the
fan blade part is capable of rotates in the fan frame.
2. The composite type transverse flow fan as defined in claim 1,
wherein, the driving device is a motor.
3. The composite type transverse flow fan as defined in claim 1,
wherein, the fan blade part has a projection at the center
thereof.
4. The composite type transverse flow fan as defined in claim 1,
wherein, bearings are disposed between the rotating shaft and the
fan frame.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of Invention
[0002] The present invention is related to a composite type
transverse flow fan and particularly to a fan structure with
composite fan blades.
[0003] 2. Brief Description of Related Art
[0004] A major function of the current fan is to induce circulating
air flow to articles needed to be cooled. Thus, if the circulating
air flow is able to be increased, effect of heat dissipation for
the cooled articles can be enhanced.
[0005] However, in order to promote the circulating air flow,
improvements of the conventional fan device have been performed and
are classified into two options: (1) improvement of driving device
and (2) improvement of fan blades. The improvement of driving
device further is divided into two ways (a) improvement of
rotational speed and (b) improvement of stabilizing rotation. The
improvement of fan blades further is divided into two ways (a)
improvement of each fan blade and (b) increase of number of the fan
blades.
[0006] Although the preceding improvements can reach purpose of
promoting circulation of air flow, effects such as simple
assembling, expanding heat dissipation area and adjustable number
of fan blades for meeting heat dissipation need are not possible to
be obtained at the same time.
SUMMARY OF THE INVENION
[0007] Accordingly, an object of the present invention is to
provide a composite type transverse air flow fan, which can comply
with need of heat dissipation to adjust number of fan blades.
[0008] Another object of the present invention is to provide a
composite type transverse air flow fan, which is capable of being
assembled easily.
[0009] A further object of the present invention is to provide a
composite type transverse air flow fan, which has an increased area
of the heat dissipation.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The detail structure, the applied principle, the function
and the effectiveness of the present invention can be more fully
understood with reference to the following description and
accompanying drawings, in which:
[0011] FIG. 1 is a perspective view of the first embodiment of a
composite type transverse flow fan according to the present
invention;
[0012] FIG. 2 is an exploded sectional view of the first embodiment
of a composite type transverse flow fan according to the present
invention;
[0013] FIG. 3 is a perspective view of the second embodiment of a
composite type transverse flow fan according to the present
invention;
[0014] FIG. 4 is an exploded sectional view of the first embodiment
of a composite type transverse flow fan according to the present
invention;
[0015] FIG. 5 is perspective view of the third embodiment of a
composite type transverse flow fan according to the present
invention; and
[0016] FIG. 6 is an exploded sectional view of the first embodiment
of a composite type transverse flow fan according to the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0017] Referring to FIGS. 1 and 2, the first embodiment of a
composite type transverse flow fan according to the present
invention basically includes a drive device 11, which can be a
motor, and a fan blade module 12, which is attached to the drive
device 11. The fan blade module 12 further includes at least one
fan blade part 121, at least one fan frame 122 and at least one
rotating shaft 123. The fan frame 122 has a first joining part 122a
and a second joining part 122b detachably engaging with each other.
The rotating shaft 123 has a first coupling part 123a and a second
coupling part 123b detachably engaging with each other. The fan
blade part 121 has a projection 121a with a pivot hole 121b at the
center thereof. The pivot hole 121b fits with the rotating shaft
123 with a bearing 123c and a bearing 123d provided between the
pivot hole 121 and the rotating shaft 123. The bearings 123c and
123d allow the rotating shaft 123 rotationally contacting with the
fan frame 122 such that the fan blade part 121 rotates in the fan
frame 122 when the rotating device 11 turns.
[0018] For assembling, a driving shaft 111 of the driving device 11
has a receiving hole 111a and the first coupling part 123a has a
fitting hole 123e with a chamber 123f. The chamber 123f has an open
side 123g with a stopper 123h and a lateral side of the chamber
123f opposite to the open side 123g has a fixing hole 123i for
securing a fixing member 123j. A ball 123k and an elastic member
123m are received in the chamber 123f sequentially and then the
fixing member 123j is fixedly joined to the fixing hole to urge the
ball 123k pressing against the stopper 123h. Once the driving shaft
111 fits with the fitting hole 123e, the ball 123k is pressed with
the driving shaft 111 against the elastic member 123m such that the
elastic member 123m is compressed along with the ball 123k moving
inward till the driving shaft 111 being incapable of pressing the
ball 123k. Right at the time, the driving shaft 111 keeps moving
downward till the receiving hole 111a moving to a position being
able to receive the ball 123k. Under this circumstance, the ball
123k is pushed by the bouncing back force of the elastic member
123m to move outward the open side 123g of the chamber 123f and
enter the receiving hole 111a such that the driving shaft 123 can
fits with the fitting hole 123e.
[0019] Besides, the driving device 11 provides a receiving part
111b with a projection 111c and the first joining part 122a has
another projection 122f to engage with the projection 111c such
that the receiving part 111b and the first joining part 122a can be
joined to each other. The second joining part 122h has a further
projection 122g too.
[0020] When the driving device 11 is in operation, the fan blade
part 121 of the fan blade module 12 rotates at state A to induce
circulation air flow entering via an inlet 122h and leaving via an
outlet provided at the fan frame 122.
[0021] Referring to FIGS. 3 and 4, the second embodiment of a
composite type transverse fan according to the present invention is
illustrated. The fan frame 222 has a first joining part 222a and a
second joining part 222b detachably engaging with each other. The
rotating shaft 223 has a first coupling part 223a and a second
coupling part 223b detachably engaging with each other. The fan
blade part 221 has a projection 221a with a pivot hole 221b at the
center thereof. The pivot hole 221b fits with the rotating shaft
223 with a bearing 223c and a bearing 223d provided between the fan
frame 222 and the rotating shaft 223. The bearings 223c and 223d
allow the rotating shaft 223 rotationally contacting with the fan
frame 222.
[0022] For assembling, the second coupling part 123b has a
receiving hole 123n and the first coupling part 223a has a fitting
hole 223e with a chamber 223f. The chamber 223f has an open side
223g with a stopper 223h and a lateral side of the chamber 223f
opposite to the open side 223g has a fixing hole 223i for securing
a fixing member 223j. A ball 223k and an elastic member 223m are
received in the chamber 123f sequentially and then the fixing
member 223j is fixedly joined to the fixing hole 223i to urge the
ball 223k pressing against the stopper 223h. Once the second
coupling part 123b fits with the fitting hole 223e, the ball 223k
is pressed with the second coupling 123b against the elastic member
223m such that the elastic member 223m is compressed along with the
ball 223k moving inward till the second coupling part 123b being
incapable of pressing the ball 223k. Right at the time, the second
coupling part 123b keeps moving downward till the receiving hole
123h moving to a position being able to receive the ball 223k.
Under this circumstance, the ball 223k is pushed by the bouncing
back force of the elastic member 223m to move outward the open side
223g of the chamber 223f and enter the receiving hole 123n such
that the second coupling part 223 can fits with the fitting hole
223e.
[0023] Besides, the second joining part 122b provides a projection
122g and the first joining part 222a has another projection 122f to
engage with the projection 122g such that the second joining part
222b and the first joining part 122a can be joined to each other.
The second joining part 222b has a further projection 122g too.
Hence, another fan blade module can be obtained.
[0024] When the driving device 11 is in operation, the fan blade
parts (121, 221) of the fan blade module 22 rotate to induce
circulation air flow entering via an inlet (122h, 222h) and leaving
via an outlet provided at the fan frame (122, 222).
[0025] Referring to FIGS. 5 and 6, the third embodiment of a
composite type transverse fan according to the present invention is
illustrated. It can be seen that the composite type transverse flow
fan of present embodiment is composed of two sets of the second
embodiment of the present invention in parallel such that the
cooling area can be increased radially and axially.
[0026] While the invention has been described with referencing to
the preferred embodiments thereof, it is to be understood that
modifications or variations may be easily made without departing
from the spirit of this invention, which is defined by the appended
claims.
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