Note: Descriptions are shown in the official language in which they were submitted.
CA 02881258 2015-02-06
FILTER ASSE1VI3LY FOR A FLUID FILTER
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a filter, and. more particularly to filter
assembly for a fluid filter.
=
Description of the Prior Art
Fluid filters are used to remove micro particles, oil or moisture from the
gas,
or remove impurities from liquid.
Among the fluid filters, an air compressor moisture removal device is
provided with a separating layer assembly which includes a plurality of layers
removably superimposed one on top of another. Each of the layers is provided
with a
. concave at one end, a protruding portion at another end, and a hole
penetrating
through the two ends, so that the layers are superimposed in such a manner
that the
= protrusion of one layer is engaged in the concave of another layer, and
the number of
the layers can be adjusted as desired.
However, the layers have to be assembled together by a screw inserted
through the holes of the layers and then fixed to a gas guide member. The
assembling of the layers requires the use of the screw, and the length of the
screw
has to change according to the number of the layers, which makes the assembly
troublesome.
The present invention has arisen to mitigate and/or obviate the
afore-described disadvantages.
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SUMMARY OF THE INVENTION
One aspect of the present invention is to provide a filter assembly for a
fluid
filter which is capable of reducing assembling cost.
Another aspect of the present invention is to provide a filter assembly for a
fluid filter which is capable of reducing manufacturing cost.
To achieve the above, a filter assembly for a fluid filter in accordance with
the present invention comprises: a plurality of filter units assembled in
series, and
each of the filter units comprises: a connecting member; an input member
disposed
on a bottom surface of the connecting member and including a plurality of
input
pipes which are each provided with an input passage, and a separating portion
which
is disposed in each of the input pipes to divide the input passage into an
upper input
chamber and a lower input chamber, each of the separating portions including
an
input hole in communication with the upper and lower input chambers; and an
output member fixed on a top surface of the input member and including a
plurality
of output protrusions to seal the upper input chambers, each of the output
protrusions
including an output hole in communication with the upper input chamber, each
of
the output holes and a corresponding one of the input holes being staggered at
180
degrees to each other.
To achieve the above, another filter assembly for a fluid filter in accordance
with the present invention comprises: a plurality of filter units assembled in
series,
and each of the filter units comprises: a connecting member including a
connecting
disc, a connecting pipe which protrudes from a top surface of the connecting
disc
and is provided with a guiding passage penetrating through the connecting
disc, and
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an connecting ring which protrudes from a bottom surface of the connecting
disc; an
input member including an input plate, an input ring which protrudes from a
top
surface of the input plate and fixed to the connecting ring, an extending pipe
which
penetrates through the input plate and is provided for insertion of a
connecting pipe
of another filter unit, a plurality of input pipes which protrude from a
bottom surface
of the input plate and are each provided with an input passage penetrating
through
the input plate, and a separating portion which is disposed in each of the
input pipes
to divide the input passage into an upper input chamber and a lower input
chamber,
each of the separating portions including an input hole in communication with
the
upper and lower input chambers; and an output member being fixed on the top
surface of the input plate, and including an inserting hole for insertion of
the
extending pipe, and a plurality of output protrusions to seal the upper input
chambers,
and each of the output protrusions including an output hole in communication
with a
corresponding one of the upper input chambers.
Preferably, the input ring is fixed on an inner surface of the connecting
ring.
Preferably, the extending pipe includes an extending section which
protrudes from the top surface of the input plate and is inserted in the
inserting hole
of the output member.
Preferably, the output member further comprises an output ring which is
fixed on an inner surface of the input ring of the input member, and an
airtightness is
maintained between an end surface of the output ring and the bottom surface of
the
connecting disc.
Preferably, each of the output holes of the output member and a
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corresponding one of the input holes of the input member are staggered at 180
degrees to each other.
Preferably, the connecting pipe of the connecting member of a first one of
the filter units is disposed in an output pipe of a filter cover.
Preferably, the extending pipe of the input member of a last one of the filter
units is sealed with a plug.
Preferably, the plug includes a plug portion which is inserted in the
extending pipe to produce a sealing effect, a cover portion which covers the
input
pipes of the input member, and a recess formed in the cover portion. =
Preferably, an inner pipe is sleeved onto the connecting ring of the
connecting member of a first one of the filter units.
Preferably, a connecting disc of a connecting member of the first one of the
filter units has a diameter larger than an outer diameter of the inner pipe.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is an exploded view of a filter assembly for a fluid filter in
accordance with the present invention;
Fig. 2 is a cross sectional view of the filter assembly for a fluid filter in
accordance with the present invention;
Fig. 3 is another cross sectional view of the filter assembly for a fluid
filter
in accordance with the present invention;
Fig. 4 is an enlarged view of a part of Fig. 3;
Fig. 5 is an assembly cross sectional view of the filter assembly for a fluid
filter in accordance with the present invention;
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Fig. 6 is an exploded view of the filter assembly for a fluid filter in
accordance with the present invention; and
Fig. 7 is a top view of the filter assembly for a fluid filter in accordance
with the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention will be clearer from the following description when
viewed together with the accompanying drawings, which show, for purpose of
illustrations only, the preferred embodiment in accordance with the present
invention.
Referring to Figs. 1-7, a filter assembly for a fluid filter in accordance
with
the present invention is disposed in a space defined by a filter cylinder 90
and a filter
cover 91 and comprises three filter units which are identical structures
assembled in
series. The three filter units are a first filter unit 100A, a second filter
unit 100B, and
a third filter unit 100C. For easy explanation, only the first filter unit
100A is
described as an example. The first filter unit 100A comprises: a connecting
member
10, an input Member 20 and an output member 30.
The connecting member 10 includes a connecting disc 11, a connecting pipe
12 which protrudes from a top surface 111 of the connecting disc 11 and is
provided
with a guiding passage 121 penetrating through the connecting disc 11, and an
connecting ring 13 which protrudes from a bottom surface 112 of the connecting
disc
11. In this embodiment, the connecting pipe 12 includes an outer thread 122.
The input member 20 includes an input plate 21, an input ring 22 which
protrudes from a top surface 211 of the input plate 21 and fixed to the
connecting
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ring 13, an extending pipe 23 which penetrates through the input plate 21 and
is
provided for insertion of a connecting pipe 12B of another filter unit (the
second
filter unit 100B for example), a plurality of input pipes 24 which protrude
from a
bottom surface 212 of the input plate 21 and are each provided with an input
passage
241 penetrating through the input plate 21, and a separating portion 25 which
is
= disposed in the input pipe 24 to divide the input passage 241 into an
upper input
chamber 2411 and a lower input chamber 2412. Each of the separating portions
25
includes an input hole 251 via which the upper and lower input chambers 2411,
2412
are in communication with each other. In this embodiment, the input ring 22 of
the
input member 20 is fixed on an inner surface of the connecting ring 13, and
the
extending pipe 23 includes an extending section 231 which protrudes from the
top
surface 211 of the input member 20, and also includes an inner thread 232.
The output plate 30 is fixed on the top surface 211 of the input plate 21, and
comprises: an inserting hole 31 for insertion of the extending section 231 of
the
extending pipe 23, and a plurality of output protrusions 32 to seal the upper
input
chambers 2411. Each of the output protrusions 32 includes an output hole 321
in
communication with the upper input chamber 2411. In this embodiment, the
output
plate 30 further comprises an output ring 33 which is fixed on an inner
surface of the
input ring 22 of the input member 20, and an airtightness is maintained
between an
end surface 331 of the output ring 33 and the bottom surface 112 of the
connecting
disc 11. Besides, each of the output holes 321 of the output plate 30 and a
corresponding one of the input holes 251 of the input plate 21 are staggered
at 180
degrees to each other.
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It is to be noted that, in this embodiment, each of the filter units is
disposed
in the filter cylinder 90 and the filter cover 91. The connecting pipe 12 of
the
connecting member 10 of the first one (namely, the first filter unit 100A) of
the filter
units is disposed in the output pipe 911 of the filter cover 91, and an inner
pipe 92 is
sleeved onto the connecting ring 13 of the connecting member 10 of the first
filter
unit 100A. The connecting disc 11 of the connecting member 10 of the first
filter
unit 100A has a diameter 131 larger than an outer diameter 921 of the inner
pipe 92
to improve filtering effect. There is an interval between the connecting disc
11 of the
connecting member 10 and an inner surface 901 of the filter cylinder 90, and
the
smaller the interval, the better the filter effect. The extending pipe 23C of
the input
member 20C of the last one (namely the third filter unit 100C) of the filter
units is
sealed with a plug 96 which includes: a plug portion 961 which is inserted in
the
extending pipe 23C to produce a sealing effect, a cover portion 962 which
covers the
input pipes 24C of the input member 20C, and a recess 963 formed in the cover
portion 962, so as to improve filter effect.
What mentioned above are the structural relations of the main components
of the embodiment of the present invention, and the filter assembly for a
fluid filter
in accordance with the present invention processes the following advantages:
First of all, low assembling cost. Since the input member 20 of the
respective filter units is provided with the extending pipe 23 which is used
to
connect the connecting pipe 12B of the connecting member 10B of another filter
unit,
via engagement of inner and outer threads for example in this embodiment.
Therefore, the filter units can be easily assembled by directly screwing the
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connecting pipe 12B of the connecting member 10B of one filter unit into the
extending pipe 23 of the input member 20 of another filter unit 100A, without
using
tools or fasteners. Hence, the assembling cost is relatively reduced.
On the other hand, low manufacturing cost. Since each of the filter units of
the present invention consists of the connecting member 10, the input member
20
and the output plate 30, the manufacturing of the filter assembly of the
present
invention can be done with a single module, and the number of the filter units
can be
adjusted as desired, which reduces the manufacturing cost.
Finally, convenience of assembly: since the extending pipe 23 of the input
member 20 includes the extending section 231 which protrudes from the top
surface
211 of the input member 20, with the extending section 231, the extending pipe
23 of
the input member 20 can be quickly guided into the inserting hole 31 of the
output
plate 30, so that the input and output plates 20, 30 can be assembled together
conveniently.
The scope of the claims should not be limited by the preferred embodiments
set forth in the examples, but should be given the broadest interpretation
consistent
with the description as a whole.
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