U.S. patent application number 10/923100 was filed with the patent office on 2006-02-23 for worm-gear type ceiling fan motor.
Invention is credited to Robin Fan.
Application Number | 20060039809 10/923100 |
Document ID | / |
Family ID | 35909802 |
Filed Date | 2006-02-23 |
United States Patent
Application |
20060039809 |
Kind Code |
A1 |
Fan; Robin |
February 23, 2006 |
Worm-gear type ceiling fan motor
Abstract
A worm-gear type ceiling fan motor comprises a stator, a rotor,
two bearings, two heat-expelling covers, the stator and the two
bearings are fixed on a motor shaft, the rotor is fixed on the
bearings by cooperating with the heat-expelling covers. A plurality
of hollow slots are formed on surface of the heat-expelling covers,
in which are provided with plural worm-gear blades, when the rotor
rotates, fresh air is instantly introduced into the ceiling fan
motor via the upper heat-expelling cover expelled out from the
lower heat-expelling cover, thus, air is circulated through the
inside of the worm-gear type ceiling fan motor to cool down the
working temperature and prolong the service life of the ceiling fan
motor accordingly.
Inventors: |
Fan; Robin; (Taichung City,
TW) |
Correspondence
Address: |
CHARLES E. BAXLEY, ESQ.
90 JOHN STREET
THIRD FLOOR
NEW YORK
NY
10038
US
|
Family ID: |
35909802 |
Appl. No.: |
10/923100 |
Filed: |
August 19, 2004 |
Current U.S.
Class: |
417/423.14 ;
417/423.7 |
Current CPC
Class: |
F04D 25/088
20130101 |
Class at
Publication: |
417/423.14 ;
417/423.7 |
International
Class: |
F04B 35/04 20060101
F04B035/04; F04B 17/00 20060101 F04B017/00 |
Claims
1. A worm-gear type ceiling fan motor comprising a stator, a rotor,
two bearings, an upper heat-expelling cover and a lower
heat-expelling cover, the stator and the two bearings fixed on a
motor shaft, the rotor fixed on the bearings by cooperating with
the upper and the lower heat-expelling covers; wherein a plurality
of hollow slots are formed on surface of the upper and the lower
heat-expelling covers, in which are provided with plural worm-gear
blades, when the rotor rotates relative to the stator, the
worm-gear blades on the surface of the upper heat-expelling cover
will instantly introduce fresh air into inner space of the
worm-gear type ceiling fan motor through the hollow slots, and
expelling it out from the hollow slots of the lower heat-expelling
cover, through this way, air is circulated through the inner space
of the worm-gear type ceiling fan motor.
2. The worm-gear type ceiling fan motor as claimed in claim 1,
wherein a plurality of positioning posts are formed at two opposite
sides of the rotor, and the upper and the lower heat-expelling
covers are fixed to the respective positioning posts through
fasteners.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] This invention relates to a worm-gear type ceiling fan motor
with worm-gear air-cooling system which is capable of cooling the
working temperature of the ceiling fan motor, improving
air-circulating efficiency and prolonging its service life.
[0003] 2. Description of the Prior Arts
[0004] A traditional ceiling fan comprises a driving motor, a
fly-wheel connected to the driving motor, and a plurality of fan
blades fixed on the fly-wheel. The driving motor is an external
revolving motor, it has to produce air circulation by rotating the
fly-wheel, the motor cover and the fan blades together. However,
there are still some problems as follows need to solve:
[0005] First, power is wasted since the driving motor has to drive
the fly-wheel, the motor cover and the fan blades to rotate
together, so that the working temperature of driving motor will be
high and the service life will be affected.
[0006] Second, the driving motor, the fly-wheel and the motor cover
is located at the center of the traditional ceiling fan, only the
fan blades can rotate to produce air movement and there still
exists a turbulence in the central space corresponding to the
driving motor, the fly-wheel and the motor cover. Accordingly, the
air circulating speed right below the ceiling fan motor is very
slow.
[0007] The present invention has arisen to mitigate and/or obviate
the afore-described disadvantages.
SUMMARY OF THE INVENTION
[0008] The primary object of the present invention is to provide a
worm-gear type ceiling fan motor with worm-gear air-cooling system
which is capable of cooling down the working temperature of the
ceiling fan motor, improving efficiency of air movement and
prolonging service life. When the worm-gear type ceiling fan motor
rotates, forward for example, a plurality of worm-gear blades on
the surface of the upper heat-expelling cover will instantly
introduce fresh air into inner space of the worm-gear type ceiling
fan motor through a plurality of hollow slots, and expelling it out
from the hollow slots of a lower heat-expelling cover, through this
way, air is circulated through the inside of the worm-gear type
ceiling fan motor, so as to cool down the working temperature of
the motor effectively, and to prolong its service life
tremendously.
[0009] The second object of the present invention is to provide a
worm-gear type ceiling fan motor capable of assisting in producing
air circulation bellow the central part of the ceiling fan
motor.
[0010] The present invention will become more obvious from the
following description when taken in connection with the
accompanying drawings, which show, for purpose of illustrations
only, the preferred embodiment in accordance with the present
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is an exploded view of a worm-gear type ceiling fan
motor in accordance with the present invention;
[0012] FIG. 2 is an assembly view of the worm-gear type ceiling fan
motor in accordance with the present invention;
[0013] FIG. 3 is an assembly cross sectional view of worm-gear type
ceiling fan motor in accordance with the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0014] Referring to FIGS. 1-3, a worm-gear type ceiling fan motor
in accordance with a preferred embodiment of the present invention
is shown and generally including: a motor shaft 10, a stator 20, a
rotor 30, two bearings 40 and two heat-expelling covers 50.
[0015] The motor shaft 10 is a hollow tube for allowing the passage
of a power source, and a top end of the motor shaft 10 is hung on
the ceiling.
[0016] The stator 20 is fixed to the motor shaft 10 and produces
magnetic rotating force after the power is on.
[0017] The rotor 30 is moveably mounted outside the stator 20 and
interiorly provided with an induction wall 31 employed to rotate
the rotor 30 under the influence of the stator 20. At two opposite
sides of the rotor 30 are formed with two pairs of positioning
posts 32, respectively.
[0018] The bearings 40 are fixed at two opposite positions on the
motor shaft 10.
[0019] The heat-expelling covers 50, including an upper cover and a
lower cover, are fixed on the bearings 40 through a central hole
51, covered face to face and fastened to the positioning posts 32
on both sides of the rotor 30 through fasteners 54. On the surface
of the heat-expelling covers 50 is formed with a plurality of
through slots 52 in which are provided plural worm-gear blades 53
whose angles are specially designed in accordance with each heat
expelling cover.
[0020] When the worm-gear type ceiling fan motor 50 rotates, the
worm-gear blades 53 on the upper heat-expelling cover 50 will
instantly introduce the fresh air A above the motor into the space
between the stator 30 and the rotor 20 through the hollow slots 52,
and expelling it out from the lower heat-expelling cover 50.
Through this way, air A is circulated through the inside of the
worm-gear type ceiling fan motor, so as to cool down the working
temperature of the motor effectively, and to prolong its service
life tremendously. Furthermore, since the worm-gear blades 53 of
the heat-expelling covers 50 can produce strong air circulation, so
that the problem of weak air circulation bellow the conventional
ceiling fan motor can be solved.
[0021] While we have shown and described various embodiments in
accordance with the present invention, it should be clear to those
skilled in the art that further embodiments may be made without
departing from the scope of the present invention.
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