Water purifier abstract
A water purifier includes an ozone generator and a filter. Water
is passed through the ozone generator wherein ozone is produced
by electrolysis to sterilize the water. The sterilized water can
be drawn-off after being sterilized, or can be conducted through
the filter and then drawn-off. The water exiting the ozone generator
can be conducted through a convoluted mixing conduit to mix the
water and ozone. The ozone generator includes a cylindrical bobbin
having positive and negative electrodes wound alternatingly around
its outer surface. The electrodes pass across water channels formed
in the bobbin outer surface. Water is passed through the channels
whereby ozone is formed by electrolysis.
Water purifier claims
What is claimed is:
1. A water purifier comprising:
an ozone generator for generating ozone, and
conduit means for conducting wafer to be purified through said
ozone generator wherein ozone is produced by electrolysis to sterilize
the water, said ozone generator comprising:
a cylinder having an interior surface forming a space, and a water
entrance and exit communicating with said space,
a bobbin disposed in said space, said bobbin defining a longitudinal
axis and including a plurality of radially outwardly projecting
ribs which extend generally parallel to said axis, said ribs being
circumferentially spaced apart to define therebetween water channels
which communicate with said entrance and exit, and
electrically conductive wire means wound around said bobbin in
contact with said ribs to form longitudinally alternating positively
and negatively charged windings for generating ozone by electrolysis
in water flowing through said water channels, said water channels
projecting radially inwardly past said windings, said windings being
spaced radially inwardly from said interior surface of said cylinder.
2. A water purifier according to claim 1 including a filter disposed
downstream of said ozone generator and communicating therewith so
that sterilized water is purified.
3. A water purifier according to claim 2 including a first outlet
disposed between said ozone generator and said filter for discharging
water sterilized in said ozone generator, and a second outlet disposed
downstream of said filter for discharging water which has been both
sterilized by ozone and filtered by said filter.
4. A water purifier according to claim 2 including a convoluted
conduit interconnecting said ozone generator and said filter and
forming a mixing section in which water and ozone are mixed.
5. A water purifier according to claim 1 wherein said bobbin is
hollow for conducting water therethrough along said axis, said bobbin
forming longitudinally spaced first and second open ends, said first
end communicating with said water entrance, and said second end
communicating with said water channels, the water flowing in one
longitudinal direction through said bobbin and in an opposite longitudinal
direction through said channels.
6. A water purifier according to claim 5 including a case encompassing
said cylinder and being spaced radially outwardly therefrom for
forming therewith a water path communicating with said water channels
for receiving water which has flowed through said channels and for
conducting the water in a longitudinal direction substantially parallel
to water flowing through said bobbin, said water path communicating
with said water exit.
7. A water purifier according to claim 1 wherein said ribs include
radially outer surfaces having longitudinally spaced slots in which
said windings are disposed.
Water purifier description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a water purifier for sterilizing
and filtering potable city water flowing out of a tap or faucet,
and more particularly to a water purifier provided with an ozone
generating device for sterilizing the water, and a water purifying
filter for removing impurities and odor from the water.
2. Description of the Prior Art
Conventionally, known water purifiers will be classified into various
types. Among the types of water purifiers are the gravity flow type
of purifier and the pressurized type of purifier which is connected
directly to a pressurized feed line.
The natural flow type of water purifier generally comprises an
upper container provided with a water purifying filter and a lower
container for storing the filtered water. The upper container is
manually supplied with water. The water supplied into the upper
container flows to the lower container by way of the water purifying
filter by which the water is naturally filtered of impurities and
odor. Thereafter, the filtered water is stored in the lower container
for use as needed.
On the other hand, the pressurized type of water purifier, which
is directly connected to the tap, can purify city water by means
of a water purifying filter and directly supply the purified water
under pressure through an outlet port such as a facet.
The above-mentioned known water purifiers each only filters the
water of the impurities and odor by means of a water purifying filter
such as activated carbon.
On the other hand, there is another type of water purifier which
provides ozone for the city water in order to sterilize it.
One such water purifier is disclosed in U.S. Pat. No. 4427426
published on Jan. 24 1984 and entitled "Ozonizer System".
The water purifier disclosed in the U.S. patent comprises at least
one, preferably two or more, ozone generating units each having
an inner, rod-like electrode and an outer tubular electrode and
a glass tube carrying the outer electrode, and end plates formed
with sockets. Each inner electrode is seated in a pair of sockets
with its ends abutting the closed ends of the sockets and clamped
thereto by screws. The glass tube has its ends abutting shoulders
in the sockets. There is provided a drier adapted for drying the
air to be ozonized.
In operation of this type of water purifier, hot air is periodically
passed through the drier to dry the desiccant material, and ambient
air is drawn through the drier by a Venturi device which also serves
to mix ozonized air with the water to be purified, thereby providing
ozonized and purified water. However, this type of system has disadvantages
in that it is a relatively complicated structure requiring many
elements, and the periodical supplying of hot air. In addition,
Japanese Utility Model Laid-Open Publication No. Sho. 63-149298
published on Sep. 30 1988 and entitled "A City Water Purifying
Apparatus" disclosed another type of water purifier. This type
of water purifier comprises an ozone generating device including
a tap for draining out city water therethrough, a water-jet pump
mounted to the tap and actuated by the pressure of the city water,
an air inlet port, an ozone outlet port and a high voltage power
generator; a conduit adapted for connecting the ozone outlet port
of the ozone generating device to the water-jet pump, and a water
flow sensor adapted for sensing the water flow at said tap in order
to actuate the ozone generating device when it senses water flow.
However, this type of water purifier has the disadvantage that the
generated ozone only contacts the water for a relatively short time
so that there is little time to efficiently ozonize the water. Furthermore,
this water purifier can not sufficiently filter the city water of
impurities and odor.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention to provide
a water purifier capable of solving the above-mentioned problems
encountered in known water purifiers.
It is another object of the present invention to provide a water
purifier provided which can be directly connected to a water tap
and which has an ozone generating device, and a convoluted flow
generating device adapted to sufficiently circulate the water in
order to increase the solubility and contact time of the ozone with
It is still another object of the present invention to provide
a water purifier comprising water outlet ports, preferably two such
ports, with one of the water outlet ports adapted to provide ozonized
water without filtration and the other port adapted to provide ozonized
and filter potable drinking water which passed through the ozone
generating device, and the convoluted flow generating device so
as to be ozonized, and then through the filter in order to sufficiently
filtered of the impurities and odor.
The above-mentioned objects of the present invention can be accomplished
by providing a water purifier comprising: means for generating ozone,
said means for detachably connecting the present water filter to
a tap by means of a water supply port thereof and adapted to change
the supplied water into ozonized water; means for enabling an increased
contact time between the ozone dissolved in the water and the water
in order to sterilize the water and remove odors from the ozone
treated water; means for supplying only the ozonized water with
the means mounted at an end portion of the round-about flow allowing
means for supplying ozone treated and unfiltered water; and means
for generating ozone treated and filtered water, said means filtering
said ozonized water passing through said branching means in order
to provide potable drinking water.
The ozone generating means is mounted at an optimal portion in
upper corner of the box-shaped main body and comprises an inner
case provided with a plug and a joint socket each having the same
inner diameter as that of a water supply pipe and adapted for detachably
mounting the ozone generating means to the water supply pipe. An
outer case is provided with a plug and a joint socket each adapted
for connecting said ozone generating means to said round-about flow
allowing means. A cylinder is provided inside said inner case and
is spaced apart from said inner case. A bobbin is positioned inside
said cylinder and is spaced apart from said cylinder to provide
cylindrical space therebetween to provide a water passage. The bobbin
includes a plurality of vertically extending ribs with each rib
provided with a plurality of setting slots, comprising shallow and
deep setting slots, said shallow and deep setting slots alternately
and circumferentially formed and spaced apart from one another so
as to repeatedly provide two types of pitches. An electrode wire
having different polarity from each other are positioned into alternative
slots. A space is provided between said vertical ribs, wherein said
input city water is first contacted with ozone and changed into
The round-about or winding flow pattern means comprises a round
flow pipe having a plurality of U-shaped bends. A plurality of supports
are used for supporting said round flow pipe.
The water purifier having the above-mentioned structure can provide
water having improved ozonization by allowing ozonized water having
been first contacted with ozone and thus having been sterilized
and deodorized in said ozone generating means to reside in said
round-about flow means for a long time, and also provide potable
drinking water by allowing said ozonized water to flow in said purified
water generating means in order to remove bacterium and pathogens
and also odor herefrom.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and other advantages of the
present invention will be more clearly understood from the following
detailed description taken in conjunction with the accompanying
drawings, in which:
FIG. 1 is a schematic view showing the structure of a tap connection
type of water purifier with an ozone generating device in accordance
with the present invention;
FIG. 2 is an enlarged section view of the ozone generating device
of the water purifier of FIG. 1 taken along line 2--2 of FIG. 4
FIG. 3 is an enlarged section view of the "A" portion
of FIG. 2; and
FIG. 4 is a cross-section view of the ozone generating device taken
along the line A--A of FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1 the water purifier 1 is connected to the
pressurized water supply by a water supply pipe 8. The water supply
pipe 8 may be detachably connected a tap 6 by means of a clamp 7.
The water purifier according to the present invention comprises
a main body 4 having the box shape. The main body includes a mounting
bracket 14 for mounting the ozone generating device 3 thereto. The
ozone generating device 3 is connected to the water supply pipe
8 at the top as illustrated.
A round-about or convoluted flow pipe 9 extends downward from the
lower portion of the ozone generating device 3 and in turn curves
around the bends of a plurality of annular supports 15 thereby
forming a wave shape. The round-about flow pipe 9 also extends,
after passing by the right side wall and lower corner of the main
body 4 to a T-shaped branch pipe 16 from which a water outlet pipe
12 branches off from the main stream pipe. The main stream pipe
then continues upward in order to connect with a water inlet port
10A of a water purifying filter 10 which is mounted under a lower
mounting bracket 14A of the main body 4.
The water purifying filter 10 includes activated carbon as the
filtering medium. A sediment filter and/or ion exchange medium may
also be present in filter 10.
Water is filtered of injurious and poisonous heavy metals and the
other materials by passing through the water purifying filter 10
to obtain potable drinking water through a drinking water outlet
valve port 11 provided at a outlet port of the water purifying filter
10. In addition, there is a water outlet valve port 11A, provided
at an outlet end of the water pipe 12 for supplying ozone treated
water. The ozone treated water has been treated with ozone to kill
Turning next to FIGS. 2 to 4 FIG. 2 is an enlarged sectional view
of the ozone generating device of the water purifier of FIG. 1.
FIG. 3 is an enlarged sectional view of the "A" portion
of FIG. 2. FIG. 4 is a cross-section view of the ozone generating
device taken along the line A--A of FIG. 2. The ozone generating
device 3 includes a cylindrical outer case 31 having a plurality
of upper lugs 31A each provided with a locking hole, and mounted
to the upper mounting bracket 14 by means of each locking bolt and
nut 31B fixed through each said locking hole. The ozone generating
device further includes an inner case 32 having an outer diameter
smaller than the inner diameter of the outer case 31 in order to
be concentrically contained inside the outer case 31. A water inlet
port 37 is integrally formed with screw plug at the top center.
The water inlet port 37 includes an external thread and has the
same inner diameter as that of the water supply pipe 8. The water
inlet port 37 is tightly connected to the lower end of the water
supply pipe 8 by means of a partially tapped joint socket 81 engaging
the external threads, Gaskets 83 and 84 aid in sealing socket 81.
The inner case 32 has the cylindrical shape with the lower end
32B of the inner case 32 supporting a cylinder 33 by supports 38.
Cylinder 33 has a diameter less than the diameter of the inner case
32 to enable the cylinder 33 to fit into the inner case 32 such
that cylinder 33 is spaced apart from inner case 32. That is, a
space is provided between the outer surface 33A of the cylinder
33 and the inner surface 32c of the inner case.
The length of the cylinder 33 is less than the length of the inner
case 32 to enable cylinder 33 to be completely received into the
inner case and to permit water to flow in the space between the
lower end A of the cylinder 33 and the lower portion 32B of the
inner case 32 as illustrated at FIG. 2.
The diameter of the cylinder 33 is greater than the diameter of
a bobbin 34 described below, to enable the bobbin 34 to be received
into the cylinder 33. The bobbin 34 is mounted to the top portion
of the inner case 32 by means of a bolt and nut 34C. A circular
sealing plate 35 seals the opening 33C at the lower end 33A of the
The length of the bobbin 34 is less than the length of the cylinder
33 to enable bobbin 34 to be completely received into the cylinder
33 and to permit water to flow in a gap between the bottom of the
bobbin 34 and the circular sealing plate 35 at the lower end 33A
of the cylinder 33 as illustrated at FIG. 2.
The lower end 32B of the inner case 32 is provided with external
threads which are threadably engaged by the internal threads of
the circular cover 36 to seal cover 36 against the lower end 32B
of the inner case 32. The circular cover further includes a center
opening 36A formed therein. As illustrated at FIG. 2 spacing supports
38 are positioned between the circular sealing plate 35 and the
cover 36 to support circular sealing plate 35 and to permit water
flow to the center opening 36A. The opening 36A formed in the cover
36 enables water flow to the outlet port 37A connected to round
flow pipe 9.
The concentric relationships of the outer case 31 inner case 32
cylinder 33 plurality of upper projections 40B and bobbin 34 are
illustrated at FIG. 4.
The water outlet port 37A is integrally formed with the bottom
of the outer case 31 and hads a plug-like shape having an outer
threaded portion and the same inner diameter as that of the round
flow pipe 9. A joint socket 82 is used with an inner threaded portion
82A to tightly connect the water outlet port 37A to an end of the
round flow pipe 9 by engaging said inner threaded portion thereof
with the outer threaded portion of the water outlet port 37A.
The bobbin 34 is provided with a plurality of lower and upper projections
40A and 40B with each projection extending outwardly from the upper
34F and lower 34G peripheries of the bobbin, respectively, and being
spaced apart from one another. Each projection 40A, 40B tightly
contacts the inner surface of the cylinder 33. The bobbin 34 further
includes a plurality of vertical ribs 41 with a rib vertically extending
between lower and upper projections 40A and 40B. The ribs form vertical
water channels between one another.
Referring next to FIG. 3 which is an enlarged section view of the
encircled portion of the bobbin 34 of FIG. 2 each vertical rib
41 of the bobbin 34 has two types of setting slots each formed as
depressions on the outer surface of each rib 41. The slots consist
of shallow setting slots 341 and deep setting slots 342. The shallow
and deep setting slots 341 and 342 are alternately and circumferentially
formed and spaced apart from on another so as to repeatedly provide
two types of pitches. In one type of the slots a positive electrode
wire 34A is wound and in the other type of slots the negative electrode
wire is wound.
For purposes of illustration, the positive wire is positioned in
the shallow slots 341 and the negative wire is positioned in the
deep slot 342. That is, the positive wire could be placed in the
deep slot and the negative wire in the shallow slot.
In operation of the water purifier in accordance with this invention,
city water is supplied through the water inlet port 37 as represented
at each arrow in FIGS. 1 and 2. The water flows downwardly into
the cylindrical space A provided inside the bobbin 34 and then
through a passage B provided by spacing apart of the lower end of
said bobbin 34 and the sealing plate 35. The water then flows upwardly
into a flow passage C, provided by the spacing apart of the vertical
ribs 41 of the bobbin 34 and the cylinder 33 wherein the city water
dissolves ozone to produce ozonized water. The ozone is generated
by electrolysis of water between the positive and negative loop-shaped
electrode wires 34A and 34B. Thereafter, the ozonized water flows
through a plurality of passage holes 331 formed in the upper side
wall 33D of the cylinder 33. The ozonized water then flows downwardly
into the annular space D provided between the cylinder 33 and the
inner case 32 and in turn flows into a space E provided between
the cover 36 of the inner case 32 and the sealing plate 35 for
sealing the lower end of said cylinder 33 and then to the opening
36A of cover 36. The ozonized water then flows into the water outlet
port 37A of the outer case 31. The ozonized water, thereafter, enters
the round flow pipe 9 by way of the water outlet port 37A in order
to circulate through the round flow pipe 9.
The known ozonization of water by the electrolysis of water in
the ozone generating device 3 will occur as follows:
If the above chemical formulas 1 and 2 are combined with each other,
the following formula 3 can be obtained:
Therefore, ozone (O.sub.3) is generated by the electrolysis of
water, and the ozone is dissolved into the water. The quantity of
ozone generated is directly proportional to the current intensity
flowing between the positive and negative electrode wires 34A and
34B of the bobbin 34. The ozonized water is not exposed to air during
circulating through the round flow pipe 9 so that the concentration
of ozone does not change. Also, the longer the flow pipe 9 is, the
longer the residence time of the ozone to react with the impurities
in the water thereby improving the sterilizing power and providing
efficient water purification.
The round flow pipe may be coiled, U-shaped or W-shaped in order
to provide extended length in a small space, as illustrated at FIG.
Also, there may be provided a drain device at a portion of the
round flow pipe 9 curving around the bends of the lower disposed
annular supports 15 and adapted for draining the impurities inside
the ozonized water.
The ozonized water is sterilized and odors are removed during flowing
in the round flow pipe 9 as described above, and then branches off
at the T-shaped pipe 16 in order to provide water for washing and
bathing and the like.
The washing/bathing water does not need to subject to purification,
thereby allowing the washing/bathing water to be obtained before
entering the water purifying filter 10.
On the other hand, the ozonized water passing through the T-shaped
pipe 16 continuously circulates through the water purifying filter
10 in order to filter off the injurious materials to the human health,
thereby making it possible to provide potable drinking water, which
drinking water will be completely harmless to the human health.
Although the preferred embodiments of the present invention have
been disclosed for illustrative purpose, those skilled in the art
will appreciate that various modifications, additions and substitutions
are possible, without departing from the scope and spirit of the
invention as disclosed in the accompanying claims.