Water purifier abstract
A water purifier to purify drinkable water, comprising a packed
filter chamber, jet type oxygen dissolution chamber, UV lamp sterilization
chamber, water circulation and drainage structure, water supply
structure and a control circuit. Such an arrangement removes high
polymer hydrocarbon pollutants, low polymer trihalo-methane pollutants,
and other soluble or insoluble pollutants such as mineral substances,
metal salts or other impurities in the water.
Water purifier claims
What is claims is:
1. A water purifier system comprising:
an upstanding water tank;
a water filtration unit located alongside said water tank;
an air-water contact means located directly above said water tank;
an ultraviolet lamp means located within said tank;
means for circulating water from the tank through the filtration
unit, air-water contact means, and back into the tank; said circulating
means comprising a motor-operated pump, and a conduit extending
from the filtration unit to the air-water contact means;
means for introducing make-up water to the purifier system, comprising
a solenoid valve;
means for withdrawing purified water from the system comprising
a diverter valve located in said conduit; and
control means for continuously operating the motor-operated pump
except when the solenoid valve is opened to introduce make-up water
into the system.
2. The water purifier system of claim 1 wherein said air-water
contact means comprises a semi-spherical dome extending upwardly
from said tank, and an upwardly-directed water jet means located
centrally below the dome interior surface.
3. The water purifier system of claim 2 wherein said ultraviolet
lamp means comprises a lamp extending vertically downwardly into
the tank at a point slightly offset from said dome, and baffle means
located below the dome to direct aerated water into proximity to
the ultraviolet lamp.
4. The water purifier system of claim 1 wherein said water filtration
unit comprises a vertical column having an upper inlet chamber,
a lower outlet chamber, packing between the two chambers, and a
discharge pipe extending upwardly from the outlet chamber through
the packing and inlet chamber.
5. The water purifier system of claim 4 wherein said motor-operated
pump is located above the filtration unit in fluid communication
with said discharge pipe.
6. The water purifier system of claim 1 wherein said means for
introducing make-up water is connected to a point in the system
immediately upstream from the filtration unit, so that make-up water
is filtered without being diluted by water already in the system.
7. The water purifier system of claim 1 wherein said control means
comprises a liquid level sensor responsive to liquid levels in said
tank, and an electronic control circuit interconnecting said sensor,
motor-operated pump and solenoid valve.
8. The water purifier system of claim 7 wherein said motor-operated
pump includes a motor having a high speed mode and a low speed mode;
said control means including means interconnecting the motor and
ultraviolet lamp means so that the ultraviolet lamp means is energized
only when the motor is in its low speed mode.
Water purifier description
The present invention relates to a water purifier system, and more
particularly to a water purifier system which makes use of filters,
ejecting-type oxygen, contact apparatus, and UV sterilization apparatus.
In order to ensure that water is suitable for drinking, the water
may be treated to eliminate particulates, dissolved materials and
bacteria, and also to separate iron, manganese, and acid radicals
from the water.
The drinking water we daily consume may be taken from an urban
tap water supply system or from a well. In recent years, due to
the construction of factories and houses, and the development of
the tourist industry in areas around water sources, the quality
of untreated water resulting e.g., in increased microbe pollution
and red water problems has been deteriorating, untreated ground
water may not be suitable for drinking purposes, due e.g., to high
microbe content such as E. Coli, shigella, salmonella, etc. exceeding
the normal permissible ranges.
The water from waterworks or other public water centers may be
sterilized by adding chlorine to reduce microbes content to an acceptable
range. Although the comparatively clean water from waterworks may
be processed through purifying condensation, chemical treatment
and further purifying procedures, many inorganic contaminants such
as poisonous heavy metals, aquaregia, and other hydrochloric acids
and minerals may still remain in the water. Further, excessive amounts
of chlorine and iodine for sterilizing the water may produce malodor
or poisonous chemical by-products. Therefore, it is preferable to
additionally purify the water from waterworks once again before
Although a small amount of certain metals is requisite to help
metabolism, and not regarded as poisonous, long periods of consumption
of certain heavy metals in high concentrations may cause disease.
For example, excessive consumption of copper may damage liver function.
Also excessive consumption of sodium may cause high blood pressure
in the aged. Moreover, an excessive amount of sulfate may produce
malodor, cause diarrhea, and result in water stains on water containers.
Therefore, it is necessary to further purify regular tap water to
eliminate or reduce the content of heavy metals in the water to
an acceptable range.
Known methods to separate organic or inorganic matters from water
include distillation, carbon absorption, ion exchange, and antipermeation
procedures. Purifiers using said methods include U.S. Pat. Nos.
4339307 4247369 and 3935077.
However, the techniques and devices of the prior art do not efficiently
eliminate all pollutants on a consistent bases, more particularly,
chloride and sulfate. Further, if ion exchange resins are used for
water purification, acid and alkaline substance may be produced
for resin regeneration, or certain inorganic salts and dissolved
resins may accumulate in the water. If distillation is used, certain
metals or alkaline substances may be distilled, or certain salts
may be contained in the distilled water due to sudden boiling. In
general, contamination may occur during the process to purify the
water by means of prior techniques or conventional devices.
SUMMARY OF THE INVENTION
The main object of the present invention is to provide a purifier
system which can regularly and efficiently eliminate all pollutants
in the drinking water on a consistent basis.
Another object of the present invention is to provide a purifier
system which can be constructed for installation either at home,
or office, or other work places.
In general, a water purifier system of the present invention may
comprise a packed filter chamber, jet-type oxygen contact chamber,
UV lamp sterilization chamber, water feeding and drainage structure,
water supply structure, internal circular piping system, and a control
circuit. the purifier system can remove high polymer hydrocarbon
pollutants, low polymer trihalomethane pollutants, and other soluble
or insoluble pollutants such as mineral substances, metal salts
or other impurities in the water.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawings disclose an illustrative embodiment of the present
FIG. 1 is a longitudinal sectional view of a purifier according
to the present invention, illustrating the various compartments
of this preferred embodiment;
FIG. 2 is a back-side and partially sectional view of the embodiment
shown in FIG. 1;
FIG. 3 is a top plan and partially sectional view of the embodiment
shown in FIG. 1; and
FIG. 4 is a control circuit diagram that may be used in FIG. 1
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the preferred embodiment as shown in the accompanying
drawings, a purifier 10 according to the present invention, comprises
oxygen dissolution (or air-water contact) chamber 12 UV sterilization
14 filter chamber 16 and a piping system and control circuit.
The said piping system includes water feed, water drainage, and
internal circulation systems.
Referring to FIG. 1 there is shown an internal circulation system
that comprises circulation pipes 22 and 24 extending between dissolution
chamber 12 UV sterilization chamber 14 filter chamber 16 and
water tank 18 of the purifier system 10. Untreated water from an
urban water supply system or other public water supply center is
introduced to the purifier system through water feed line 60. A
motor-operated pump 20 is included in the internal piping system
to continuously pump water from water tank 18 into the other elements
16 12 and 14 for filtration, oxygen dissolution, and sterilization
treatment. The sterilized water is circulated back to the water
tank 18. The said internal circulation piping includes: a circulating
pump 20 first water distribution pipe 22 from water tank 18 to
filter chamber 16 and second water distribution pipe 24 from filter
chamber 16 to oxygen dissolution chamber 12. The said oxygen dissolution
chamber 12 is arranged to communicate with said water tank 18 via
a drainage path through the tank roof.
The filter chamber (column) 16 is arranged at the back of water
tank 18 to receive water from the first water distribution pipe
22 and/or from water feed piping 60. As shown in FIG. 2 water flows
downwardly through filter material 28 to an outlet chamber at the
lower end of the column, and then upwardly through a discharge pipe
26. The filter material 28 may be selected from natural filter substances,
active carbon, polypropylene, acetate fiber, polyester non-woven
cloth, or asbestos, or the combination of said materials. The said
filter material 28 has the ability to remove hydrocarbon pollutants
or other high polymer substances from the water. These hydrocarbon
and high polymer pollutants are inevitably contained in the water
source due to abuse of insecticides, herbicides, and other industrial
The circulating pump element 20 (FIG. 1) is arranged in a pump
chamber 30 located atop filter chamber 16 in fluid communication
with the central outlet pipe 26. Pump element 20 is directly driven
by a motor 32 to draw water from the water tank 18 into the filter
chamber 16 via the first water distribution pipe 22. The water from
filter chamber 16 is further circulated through second water distribution
pipe 24 and oxygen dissolution chamber 12 back to the original water
tank 18. Because of the water pressure from the water supply system
and the force from circulating pump 20 the filter chamber 16 and
the pump chamber 30 are always fully filled with water. The shaft
21 of the pump 20 and the shaft 33 of the motor 30 are indirectly
connected with each other by means of permanent magnets 34 and 36
and an intervening plastic wall 38. Wall 38 acts as an isolator
to prevent impurities from passing through the pump chamber 30 into
the drinking water such impurities can include carbon molecules,
metal powder and lubricant that can come off motor 32 and motor
The oxygen dissolution (air-water contact) chamber 12 is comprised
of a transparent and semi-circular housing 40 arranged at the top
of the water tank 18 with a drain opening at the bottom to communicate
with the water tank 18. The second water distribution pipe 24 comprises
an upwardly directed nozzle jet 42 at its downstream end to penetrate
into the oxygen dissolution chamber 12. Therefore, the water pumped
by the circulating pump 20 is ejected upwardly through the nozzle
jet 42 to provide a fountain-like flow 44 to increase the water
contact surface and the contact time with the air. The heavy metals
that are dissolved in the water and not removed by the filter material
28 (such as iron, manganese, copper, and sulfate) are fully oxidized
in the oxygen dissolution chamber 12 to form into insoluble compounds.
These insoluble compounds will later be filtered by the filter material
28 while passing through the filter chamber 16.
The UV sterilization chamber 14 is defined by a hollow cylindrical
housing arranged inside the water tank 18. Centrally arranged within
chamber 14 is a UV lamp 50. The inner wall of sterilization chamber
14 is smooth to reflect light and thus reinforce the sterlization
strength of the UV lamp 50; the reflective wall 14 also helps to
radiate ultraviolet rays onto the bottom of the water tank 18. The
sterlization chamber 14 has a baffle at its upper end, such that
all water or the majority of the water dropping from the upper oxygen
dissolution chamber 12 is directed into chamber 14. The E. Coli,
Bacillus Subtillis, Chlorobacterium contained in the water are grossly
killed by the UV radiation.
UV sterilization is an economical method that is easy to carryout
without polluting or otherwise affecting water properties. It is
effective on most bacteria and applicable for long term sterlization
to kill or prohibit the generation of bacteria in the water within
water tank 18.
According to photo-biology, the UV rays within 180-280 nm is classified
UV-C, of which the wave length is shorter than UV-A (320-400 nm)
or UV-B (280-320 nm) which are contained in regular or severe sunlight.
UV-C is harmful to creatures, may cause microbes to mutate or may
kill the microbes. It has also been revealed that specificity is
discovered when 260 nm UV sterilization is performed. It is reported
that UV sterilization produces pyrimidine dimer which kills the
bacteria. Further, UV rays may cause the nucleic acid of microbes
to produce photosynthetic reaction, and photobridging reaction while
nucleic acid and protein are reacted with each other. These reactions
are also harmful to the microbes.
The said UV lamp 50 uses low pressure mercury to produce artificial
UV rays of 253.7 nm to efficiently kill microbes. The functional
design of the said UV lamp 50 is similar to regular fluorescent
lamps. However, the tube 51 of the said UV lamp 50 is not coated
with fluorescent material; instead it is made of quartz glass to
provide high penetrability for UV rays. The output of the UV rays
from the UV lamp rays. The output of the UV rays rom the UV lamps
50 varies with the mercury vapor pressure in the tube 51; the mercury
vapor pressure is affected by the tube wall temperature. Therefore,
maximum output of UV rays is achieved if the tube wall temperature
is maintained at 40.degree.-50.degree. C.
The water in the water tank 18 is continuously pumped out by the
circulating pump 20 to further circulate among the filter chamber
16 the oxygen dissolution chamber 12 the sterilization chamber
4 and the water tank 18. During circulation, the water is continuously
subjected to filtration, oxidization, and sterlization treatments.
All possible hydrocarbon high polymer, metallic salts, mineral substances
and soluble or insoluble pollutants, and bacteria and microbes are
removed or killed within 10 minutes. Therefore, after a short period
of circulation, the water in the water tank 18 is suitable for use
as drinking water.
Please refer to FIGS. 2 and 3 regarding water feeding, water supply,
and water drainage systems.
The water feeding system includes a water inlet pipe 60 to connect
with an outside tap water or other public water supply; the system
includes a solenoid valve 62 and a water level detector 64. When
the water level detector 64 senses that the water in the water tank
18 is below a certain level, the electronic control circuit illustrated
in FIG. 4 will immediately drive the solenoid valve 62 to open,
so as to let outside water pass through water inlet pipe 60 and
filter chamber 16 (by means of its water supply pressure). After
initial filtration the water is circulated through the second water
distribution pipe 24 to finally return to the water tank 18. When
the water level detector 64 detects that the water in the water
tank 18 has raised over a fixed high level, it will immediately
provide the control circuit with a signal to turn off the solenoid
valve 62 so as to stop water feeding. At the same time, the circulating
pump 20 will be simultaneously driven to pump the water for recirculation.
The water supply system includes a water outlet pipe 70 (FIG. 3)
that communicates with the second water distribution pipe 24. A
diverter valve 72 controls water flow through outlet pipe 70; a
manual push rod 74 and link 76 are connected to valve 72 for operating
the valve. A spring 78 normally keeps valve 72 in a shut-off position
wherein water flows through distribution pipe 24 to water jet 42.
To take water for drinking, the user needs only to push rod 74
to thereby shift the valve to its ON position (as illustrated in
dotted lines in FIG. 3). Water is pumped by circulating pump 20
through the water distribution pipe 24 into the water outlet pipe
70 for ready use. As soon as the push force is released from push
rod 74 the drag spring 78 will immediately drive the push rod,
the link lever and the valve return to original position, to shut
off the flow of water through outlet pipe 70. While taking the water
from the water purifier, the user must wait until the water in the
water tank 18 is processed. For better identification, the control
circuit is provided with an indicator lamp to indicate that the
water in the water tank 18 is being processed or purified.
A drain pipe 80 (FIG. 3) is connected to the first water circulation
pipe 22 at its lower end for draining off water when it is necessary
to clean the water tank or the filter, or if the water from the
water feeding system is excessively turbid. A valve 82 in pipe 80
can be opened by manual operation to let the water in water tank
18 drain away through the water drain pipe 80. During the draining
process, the power switch of the purifier system 10 must be turned
off to stop water feeding.
Please refer to the control circuit diagram 90 of the present purifier
10 as illustrated in FIG. 4. The purifier system 10 is connected
to a regular AC power supply. The AC power is transformed into a
low potential AC by a transformer T1. The lower potential AC thus
obtained is further rectified through diodes D1 and D2 and filtrated
through condenser C to produce a DC voltage. The said DC voltage
thus obtained is stabilized through a stabilizing circuit 1C1 to
further provide a stable 12V DC power. The power switch SW is to
control power supply. When the power switch SW is switched ON, TR1
is drive ON, and power indicator lamp LED1 is lit to indicate that
the power is ON. Since the water level detector 64 is comprised
of a reed switch and a magnetive foam, and the gravity of the magnetive
foam is less than 1 (is lighter than water), when the power is connected
to Vcc, the magnetive foam is floating in the water to rise and
fall in accordance with the water level. If the water reaches the
pre-fixed low level, the water level detector will immediately provide
the comparator LM2 with a ground signal at the input terminal, to
let the comparator LM2 give a trigger signal to the grid of the
silicone control rectifier SCR. The silicone control rectifier SCR
further turns on the coil of the relay RL1. Therefore, the contact
point is jumped from N.C. (b point) to N.O. (a point) to let the
electric current be connected to solenoid 62 to turn it on, so as
to let outside water be fed into the water tank 18 through the water
feeding system. At the same time, the water inlet indicator lamp
LED2 (red lamp) is lit and the motor and the UV lamp are shut off.
When the magnetive foam of the water level detector follows the
water level to rise to the pre-fixed high level, the detector will
immediately provide the comparator LM1 with a high potential voltage
(about 12V) at the input terminal to change the output terminal
of the comparator LM1 from positive potential into "low"
potential, so as to short-cut the silicone control rectifier SCR.
The relay RL1 is therefore, turned off, to let the contact point
be jumped from N.O. (a contact point) to original N.C. (b contact
point). The solenoid 82 is thus shut off to stop water feeding,
and the water inlet indicator lamp LED2 is turned off. At the same
time, another transistor TR3 is turned on to start internal circulation
of water treating process. At first, an oscillator IC2 is driven
to produce a series of pulse oscillation signals for a cycle of
1 minute. And at the same time, the high level or stop feeding indicator
lamp LED3 is energized. The said oscillation signals are sent to
a first counter IC3. The said first counter IC3 is a frequency discriminate
circuit, which extends the cycle of the original oscillation signals
by ten times, and add the signals to a second counter IC4 for further
counting. When the first 1-2 clock signals are sent to the second
counter IC4 the indicator lamp LED4 is lit to indicate the initiation
of water purification, and water feeding must be stopped. At the
same time, the said two relays RL2 and RL3 are driven to trip, the
circulating pump is driven to operate at low speed to further pump
the water, and the UV lamp is lit to start sterilization process.
When the first 3-6 clock signals are provided, the motor is driven
to operate at high speed, and the UV lamp is turned off, while the
indicator lamp LED4 keeps illuminating. When the 7th clock signal
is provided, a water supply indicator lamp LED5 is turned on to
indicate that the water in the water tank is fully purified to a
safety standard, ready for use. When the 8th clock signal is started,
a first NOT AND gate NAND1 is produced to provide the third counter
IC5 with a low potential, so as to let the third counter IC5 start
counting. When this clock signal is sent to the third counter IC5
a second NOT AND gate NAND3 gives an output of high potential, to
drive the motor turn to low speed operation, the UV lamp is energized
again to provide UV rays, and the water supply indicator lamp LED5
keeps illuminating. When the 9-10th clock signals are sent to the
said third counter IC5 the motor turns to high speed operation
again, and the UV lamp is turned off, while the indicator lamp LED5
remains illuminating. Until the next clock signal is provided, the
third counter IC5 is cleared to stop counting, and the second counter
IC4 starts to count. By means of said circulation, the quality of
the water in the water tank is constantly maintained within normal
range for safety drinking service. The above-said internal circulation
will be stopped when the power switch SW is switched off, or when
the solenoid 62 is reset to start. The present invention also comprises
a clear circuit 92 to clear all the counters IC3 IC4 and IC5 when
these counters are driven to resume counting.
The said control circuit 90 controls the purifier 10 to automatically
start the water feeding and purification process. While outside
water is filling water tank 18 the water flows slowly through filter
chamber 16 oxygen dissolution chamber 12 and UV lamp sterlization
chamber 14. Thereafter the water flows at high speed through the
filter chamber, oxygen dissolution chamber and UV lamp extinguished
sterilization chamber. By means of this arrangement, and after a
short period of time, the water in the water tank will be purified
to a clean water state.
As indicated, the structure herein may be varied as to structural
detail; Various modifications will be apparent.