FIELD OF INVENTION
This invention relates to a novel cooling fan for engine of automobile.
PRIOR ART
Engine cooling fan in automobile is known to have been provided. Said cooling
fan provides sufficient air for cooling of radiator and engine room. The engine
cooling fan is of two types, which is attached with engine to take power from
the engine to operate its electric motor.
However, during operation of fan, there is possibility of mud/water splash on
the fan blades. This results in imbalance in fan blades which in turn leads to
jamming and burning of motor. This problem is very prominent in location '
having bad road condition and heavy water clogging zones.
In order to address the above problems, conventional vehicle is provided with -
an under body splash guard (mud flap) to avoid entry of mud, wherein shroud
(a) is mounted with a fan (b), which is connected to a motor (c) at its center (as l
shown in fig. 1). I
However, provision of splash guard as an additional part increases cost of f
vehicle. Again, over a period of time due to under body hitting and bad road
condition, at times splash guard is lost leading to loss of function. This also
adds to maintenance cost.
Hence, it is required to develop a novel cooling fan for engine, which can I
overcome disadvantages associated with the prior art. I
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OBJECTS OF THE INVENTION
The primary object of the present invention is to provide a novel cooling fan for
engine of automobile which obviates drawbacks of prior art.
Another object of the present invention is to provide a novel cooling fan for
engine of automobile which is simple in construction. I
Further object of the present invention is to provide a novel cooling fan for
engine of automobile which is efficient and reliable.
SUMMARY OF THE INVENTION
This invention provides a novel cooling fan for engine of automobile comprising
of a shroud mounted with fan for engine, wherein a shroud extension is
integrally provided with rim of fan mounting. •
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Said shroud provides covering to the fan from below. This prevents entry of ;
mud in fan blade, thereby avoiding imbalance of fan causing jamming/burning ;
of fan motor.
The shroud extension covering partially periphery of fan directs air flow ,
towards engine room, which improves cooling of engine room. f
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BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Further objects and advantages of this invention will be more apparent from
the ensuing description when read in conjunction with the accompanying
drawings and wherein:
Fig. 1 shows: conventional cooling fan for engine of automobile.
Fig. 2 shows: novel cooling fan for engine of automobile according to the
present invention.
Fig. 3 shows: exploded view of novel cooling fan of present invention.
DETAIL DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE
ACCOMPANYING DRAWINGS;-
The present invention discloses a novel cooling fan for engine of automobile.
Now, reference may be made to fig. 2 and 3, wherein a shroud (a) is mounted
with a fan (b) at its center. The fan is connected to a motor (c) at is center for
its operation. In addition to the above, a shroud extension (d) is provided
integrally with the rim of fan mounting. The assembly thus obtained is
mounted on radiator (e).
The above provision of shroud extension provides covering to the fan from
f
below.
This prevents entry of mud in fan blade, thereby avoiding imbalance of fan. r
This in turn avoids jamming/burning of a fan motor. ;
The shroud extension covering partially periphery of fan directs air flow
towards engine room, which improves cooling of engine room.
The aforesaid shroud extension of the present invention avoids provision of
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mud flap, which requires additional tooling and investment. Further, mud flap
adds to maintenance cost in case of its loss. Thus, the present invention avoids
additional cost as mud flap is no more required to be provided.
The novel cooling fan of instant invention is preferably manufactured by the
method of injection moulding. So that, in one step shroud with the extension at
the rim of fan mounting can be manufactured. However, other suitable
methods obvious to person skilled in the art are understood to be within scope }
of the invention.
Again, the shroud with extension is made of material such as plastic without
restricting scope of the invention to the same.
:
The material of the shroud should be such that, it can withstand high
temperature of the exhaust as the fan is located in proximity to exhaust of .
engine. '
It is to be noted that the present invention is susceptible to modifications,
adaptations and changes by those skilled in the art. Such variant embodiments
employing the concepts and features of this invention are intended to be within
the scope of the present invention, which is further set forth under the
following claims:-

WE CLAIM:
1. A novel cooling fan for engine of automobile comprising of a shroud
mounted with fan for engine, wherein a shroud extension is integrally provided with rim of fan mounting.
2. A novel cooling fan as claimed in claim 1, wherein said shroud extension
partially covers periphery of fan which directs air flow towards engine
room to improve its cooling.
3. A novel cooling fan as claimed in claim 1 or 2, wherein the fan is preferably made of plastic and avoids use of mud flap.
4. A novel cooling fan as claimed in any of the preceding claims, wherein
the shroud extension prevents entry of mud in fan blade to avoid
jamming/burning of fan motor.
5. A novel cooling fan for engine of automobile substantially as herein
described with reference to the accompanying drawing.