Water purifier abstract
A portable water purifier includes a portable ozone generator and
water container and a flexible tube conducting ozone from the generator
to the container. A filter-bubbler is used to bubble ozone into
water in the container and then to filter the purified water as
it is drawn from the container with the flexible tube serving as
a siphon. A vent for the container contains an ozone decomposition
catalyst for decomposing any ozone in the vented gas.
Water purifier claims
1. A portable water purifier comprising:
a. a portable ozone generator;
b. a portable water container independently positionable relative
to said generator;
c. a flexible tube leading from said generator to said container
to conduct ozone to said container;
d. a manually disconnectable connection joining said flexible tube
to said generator;
e. a filter connected to the end of said flexible tube opposite
said disconnectable connection;
f. means for connecting said filter to said portable water container;
g. said portable water container being orientable for disposing
said filter in a lower region of said portable water container so
said filter serves as a bubbler for bubbling said ozone into said
lower region of the water in said container;
h. vent means for venting gas from said portable water container;
i. said vent means having an ozone decomposition catalyst arranged
so said gas vented through vent means passes through said catalyst
to decompose any ozone in said vented gas;
j. said flexible tube serving as a water output line from said
portable water container after ozone treatment of said water;
k. said flexible tube being arranged as a siphon for providing
a pressure head for drawing said purified water from said container;
l. said filter serving as a filter for water withdrawn from said
portable water container under pressure of said siphon.
2. The purifier of claim 1 wherein said connecting means for said
filter is a closure cap for said container.
3. The purifier of claim 2 wherein said closure cap is removable
for filling said container, and said container is arranged with
said closure cap at a lower region of the side of said container
for said bubbling of ozone into said water.
4. The purifier of claim 1 wherein said filter is removable for
filling said container, and said container is arranged with said
filter at a lower region of the side of said container for said
bubbling of ozone into said water.
5. The purifier of claim 1 wherein said vent means comprises a
flexible tube leading from said container to said generator.
6. The purifier of claim 5 wherein said generator has a tube connected
to said vent tube and filled with said ozone decomposition catalyst.
7. The purifier of claim 5 wherein said flexible tube for said
ozone and said flexible tube for said vent each have regions higher
than the water level in said container when connected to said generator.
8. The purifier of claim 1 wherein said generator includes a corona
discharge element, a transformer for supply high voltage to said
element, and a pump for forcing air through said element.
9. The purifier of claim 8 including an ozone decomposition catalyst
arranged in the input and output lines for said pump.
10. The purifier of claim 8 including a single fuse in the power
supply to said generator to disable said pump and said corona discharge
element upon overload of said power supply.
11. The purifier of claim 10 including an adjustable electric timer
for preselecting time intervals of operation of said generator,
and wherein said fuse is arranged to disable said timer.
12. The purifier of claim 10 including an ozone decomposition catalyst
arranged in the input and output lines for said pump.
13. The purifier of claim 8 wherein said vent means comprises a
flexible tube leading from said container to said generator, and
said generator has a tube connected to said vent tube and filled
with said ozone decomposition catalyst.
14. The purifier of claim 13 including an ozone decomposition catalyst
arranged in the input and output lines for said pump and including
an adjustable timer for preselecting time intervals of operation
of said generator.
Water purifier description
THE INVENTIVE IMPROVEMENT
Ozone generating equipment has been used to purify water, but such
equipment has been heavy, stationary, and permanently built into
a water supply system. The invention involves recognition of ways
that ozone generating equipment can be made compact and light enough
to serve as a portable ozone generator, and the invention recognizes
the need for portable water purification equipment usable at cottages,
campsites, travel trailers, etc. The invention aims at an economical,
lightweight, and compact water purification system that is safe,
reliable, effective, and convenient and economical to operate and
SUMMARY OF THE INVENTION
The inventive purifier includes a portable ozone generator, a portable
water container, and a flexible tube leading from the generator
to the container to conduct ozone to the container. A bubbler introduces
ozone into a lower region of the water in the container, and gas
is vented from the container as the water is purified. The vent
has an ozone decomposition catalyst arranged so vented gas passes
through the catalyst to decompose any ozone, and means for drawing
off the purified water includes a filter and a siphon.
FIG. 1 is a partially schematic, partially cut-away, side elevational
view of a preferred embodiment of the inventive water purifier;
FIG. 2 is a partially schematic, partially cut-away, elevational
view of a portion of the purifier of FIG. 1 showing the drawing
off of purified water; and
FIG. 3 is a partially schematic, partially cut-away, side elevational
view of an alternative preferred embodiment of the inventive purifier.
Purifier 10 of FIG. 1 includes a portable ozone generator 11 and
a portable water container 12 with a flexible tube 13 of an ozone
resistant material leading from generator 11 to container 12 to
conduct ozone to water 14 in container 12. Generally, ozone produced
in generator 11 is bubbled into water 14 in container 12 until water
14 is purified, and then water 14 is drawn out of container 12 and
used. First, generator 11 will be described, and then variations
in the invention and its operation will be discussed.
Generator 11 includes a base 15 a protective, covering housing
16 a transformer 17 mounted on base 15 a support 18 extending
above transformer 17 a pump 19 secured to support 18 a timer 20
powered electrically or mechanically, and a coiled tube, corona
discharge element 25. Element 25 can be formed in several ways of
a high voltage conductor, a dielectric, a ground conductor, and
an air gap between the conductors to produce a corona discharge
for generating ozone. Other corona discharge elements and ozone
generators can also be used and are preferably selected for light
weight, compact size, and reliability.
Transformer 17 supplies the high voltage through wire 21 leading
into element 25 through Y connector 22 and pump 19 forces air through
element 25 through an input line 23 leading to the other branch
of Y 22. The air passes through the corona discharge gap inside
of element 25 to produce ozone delivered through output line 24
to flexible tubing 13.
The inlet to pump 19 is through an opening 26 in base 15 and through
an air inlet line 27. To protect pump 19 from the deteriorating
effects of ozone, input line 27 and output line 23 are each preferably
filled with an ozone decomposition catalyst to decompose any ozone
in lines 23 or 27. Many ozone decomposition catalysts can be used,
and any such catalyst is preferably formed so that air can pass
through the catalyst.
A fuse 28 in the power supply to generator 11 is connected to disable
transformer 17 pump 19 and preferably timer 20 if an overload
blows fuse 28. This makes the entire generator 11 inoperative if
fuse 28 blows, and this both eliminates the need for any separate
signal to the user that the generator has become inoperative, and
also prevents the bubbling of untreated air into container 12 in
the mistaken belief that ozone is purifying water 14.
A vent line 30 also formed of ozone resistant, flexible tubing,
leads from container 12 to generator 11 and a vent tube 31 inside
generator 11 connects to vent line 30. Vent tube 31 leads to a vent
opening 32 in base 15 and vent tube 31 is filled with an ozone
decomposition catalyst in a form that allows gas to pass through
tube 31. Then any ozone passing through vent line 30 is decomposed
in tube 31 and rendered harmless.
As shown in FIG. 1 ozone passing through line 13 is fed to a porous
bubbler 33 that bubbles the ozone into a lower region of water 14.
This is preferably accomplished as illustrated by laying container
12 on its side after it is filled through cap 34. Timer 20 is used
to regulate the timed interval of the ozone treatment so that water
14 is purified when the treatment ends. Then flexible tube 13 is
removed from generator 11 and led downward below container 12 as
shown in FIG. 2 to draw the purified water 14 from container 12
downward into container 35 with tube 13 serving as a siphon. With
such an arrangement, bubbler 33 then serves as a filter, and siphon
13 provides the pressure to force water 14 through filter 33. Container
35 can be any convenient water storage vessel or a vessel in which
the water is used directly.
FIG. 3 shows some variations of the inventive purifier that can
be combined in several ways. Container 36 of FIG. 3 has filter-bubbler
33 arranged near the bottom of the side of the container and secured
to closure cap 37. Container 36 is filled through a top opening
covered by another cap 38 so that container 36 need not be turned
onto its side after filling. Container 36 can use a vent line 30
as previously described and shown in phantom in FIG. 3 or a vent
can be arranged in combination with cap 38 as shown in solid lines.
Vent cartridge 39 is secured to the underside of cap 38 and has
a bottom opening 40 spaced from a top opening 41 in cap 38. Cartridge
39 is filled with an ozone decomposition catalyst 42 and an auger-shaped
element 43 inside of cartridge 39 requires vented gas to pass around
a curving path leading between openings 40 and 41. Many ozone decomposition
catalysts are usable in cartridge 39 and other barriers or devices
requiring the gas to travel a curving path can be inserted in cartridge
39 so that any ozone is safely decomposed before the gas leaves
top opening 41. Purified water is drawn from container 30 preferably
by using line 13 as a siphon as previously described, with bubbler
33 serving as a filter.
All the embodiments of the invention preferably have tube connections
between generator 11 and a water container arranged to lead above
generator 11 so that water cannot run from a container back to the
generator. Additional protection can be achieved with check valves,
if desired. The generator and containers can be made in various
shapes and sizes for convenient storage and use. For example, generator
11 can be shaped to hang flat against a wall, and water containers
can be shaped to fit into a common package with the generator, hang
on a wall, rest on a shelf under the generator, etc. Also, the different
vent arrangements and water draw-off arrangements can be combined
in several ways besides the ones illustrated.
The overall result is a simple, economical, compact and portable
water purifying system that is safe, convenient, reliable, and usable
at many places where water purification is desirable. The simplicity
and effectiveness of corona discharge element 25 helps make this
possible, and the other features of the invention work in combination
for a simple, and effective system not previously available.
Persons wishing to practice the invention should remember that
other embodiments and variations can be adapted to particular circumstances.
Even though one point of view is necessarily chosen in describing
and defining the invention, this should not inhibit broader or related
embodiments going beyond the semantic orientation of this application
but falling within the spirit of the invention. For example, those
skilled in the art will understand variations in materials and design
that are possible within the scope of the invention.