U.S. patent application number 17/732547 was filed with the patent office on 2022-08-18 for electrolytic ozone generator.
The applicant listed for this patent is GUANGZHOU DEPOSON ELECTRIC TECHNOLOGY CO., LTD.. Invention is credited to Yufu Pan, Wenying Zhang, Jianhua Zhong.
Application Number | 20220259747 17/732547 |
Document ID | / |
Family ID | 1000006360578 |
Filed Date | 2022-08-18 |
United States Patent
Application |
20220259747 |
Kind Code |
A1 |
Zhong; Jianhua ; et
al. |
August 18, 2022 |
Electrolytic Ozone Generator
Abstract
An electrolytic ozone generator comprises a cavity, and
electrodes and a membrane disposed in the cavity. The electrodes
comprise an anode and a cathode. A water inlet and a water outlet
are formed in two ends of the cavity respectively. The membrane has
a side face parallel and opposite to the anode and a side face
parallel and opposite to the cathode. An annular guide channel is
formed between a periphery of the anode, the cathode and the
membrane, and an inner wall of the cavity. A water distribution
space is formed between the water inlet and the electrode at the
water inlet end, and is communicated with the annular guide channel
and the through holes in the electrode at the water inlet end. The
anode and the cathode are electrically connected through water
flowing therethrough. The ozone generator can increase the ozone
concentration in water.
Inventors: |
Zhong; Jianhua; (Guangzhou,
CN) ; Zhang; Wenying; (Guangzhou, CN) ; Pan;
Yufu; (Guangzhou, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
GUANGZHOU DEPOSON ELECTRIC TECHNOLOGY CO., LTD. |
Guangzhou |
|
CN |
|
|
Family ID: |
1000006360578 |
Appl. No.: |
17/732547 |
Filed: |
April 29, 2022 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2020/086753 |
Apr 24, 2020 |
|
|
|
17732547 |
|
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C25B 11/046 20210101;
C25B 11/043 20210101; C25B 15/08 20130101; C25B 1/13 20130101; C25B
9/19 20210101; C25B 11/03 20130101 |
International
Class: |
C25B 9/19 20060101
C25B009/19; C25B 1/13 20060101 C25B001/13; C25B 11/03 20060101
C25B011/03; C25B 15/08 20060101 C25B015/08; C25B 11/043 20060101
C25B011/043; C25B 11/046 20060101 C25B011/046 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 22, 2020 |
CN |
202010324428.7 |
Claims
1. An electrolytic ozone generator, comprising a cavity, and
electrodes and a membrane disposed in the cavity, wherein the
electrodes comprise an anode and a cathode, the membrane is
disposed between the anode and the cathode; a water inlet and a
water outlet are formed in two ends of the cavity respectively; the
membrane has a side face parallel and opposite to the anode and a
side face parallel and opposite to the cathode; through holes are
formed in the anode and/or the cathode, and the membrane is a
non-porous membrane; an annular guide channel is formed between a
periphery of the anode, the cathode and the membrane, and an inner
wall of the cavity; a water distribution space is formed between
the water inlet and the electrode at the water inlet end, and is
communicated with the annular guide channel and the through holes
in the electrode at the water inlet end; and the anode and the
cathode are electrically connected through water flowing through
the anode and the cathode.
2. The electrolytic ozone generator according to claim 1, wherein
an end face of the anode faces the water inlet, and an end face of
the cathode faces the water outlet.
3. The electrolytic ozone generator according to claim 1, wherein
the electrolytic ozone generator further comprises a water inlet
assembly located at the water inlet end of the cavity; the water
inlet assembly comprises a water inlet pipe and a regulating port
disposed on the water inlet pipe and used to regulate a water
velocity and pressure, and the water inlet pipe has an end
connected to a water source and an end connected to the water
inlet; and water flowing out of the regulating port flows back to
the water source.
4. The electrolytic ozone generator according to claim 3, wherein a
steel ball provided with a notch and used for regulating a water
flow is disposed in the regulating port, and steel balls with
notches of different sizes are used to regulate the water flow.
5. The electrolytic ozone generator according to claim 1, wherein
the through holes of the anode are aligned with the through holes
of the cathode, and axial projections of the through holes of the
anode overlap with axial projections of the through holes of the
cathode.
6. The electrolytic ozone generator according to claim 1, wherein
the through holes of the anode are staggered with the through holes
of the cathode, and axial projections of the through holes of the
anode do not overlap with axial projections of the through holes of
the cathode.
7. The electrolytic ozone generator according to claim 1, wherein
multiple through holes are formed in the anode, and multiple
through holes are formed in the cathode.
8. The electrolytic ozone generator according to claim 1, wherein
an area of the through holes in the anode or the cathode accounts
for 5%-80% of a total area of the anode or the cathode.
9. The electrolytic ozone generator according to claim 1, wherein a
displacement buffer zone for displacement buffer of the anode or
the cathode is disposed between the anode or the cathode and the
inner wall of the cavity.
10. The electrolytic ozone generator according to claim 9, wherein
a buffer assembly for buffering a water pressure applied to the
anode or the cathode is disposed in the displacement buffer
zone.
11. The electrolytic ozone generator according to claim 10, wherein
the buffer assembly is an elastic member, and the elastic member is
arranged in an axial direction and has an end acting on the anode
or the cathode and an end acting on the inner wall of the
cavity.
12. The electrolytic ozone generator according to claim 11, wherein
the elastic member is any one of a spring, a tower spring and an
elastic piece.
13. The electrolytic ozone generator according to claim 1, wherein
the membrane is a PEM.
14. The electrolytic ozone generator according to claim 1, wherein
the anode and/or the cathode is in any one of a circular shape, a
triangular shape, a rectangular shape, a trapezoidal shape, a
square shape, a parallelogram shape, a rhombus shape and an
irregular shape.
15. The electrolytic ozone generator according to claim 1, wherein
the cathode is made of any one of stainless steel, carbon
materials, metal materials, metal oxide, non-metal conductive
materials and composite materials; and the anode is made of any one
of diamond, platinum, titanium, electrolytic water electrode
wear-resistant materials, conductive ceramic, conductors, carbon
materials, graphite materials and other metal materials.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a Continuation application of PCT
Application No. PCT/CN2020/086753 filed on Apr. 24, 2020, which
claims the benefit of Chinese Patent Application No. 202010324428.7
filed on Apr. 22, 2020. All the above are hereby incorporated by
reference in their entirety.
BACKGROUND OF THE INVENTION
1. Technical Field
[0002] The invention relates to the technical field of ozone
electrolysis devices, in particular to an electrolytic ozone
generator.
2. Description of Related Art
[0003] Ozone (O.sub.3), as an allotrope of oxygen (O.sub.2), is a
light blue gas with a specific smell, and is a strong oxidant that
has good sterilization and disinfection effect because of its high
oxidizing capacity, thus being recognized as a common effective
disinfectant around the world. More importantly, when ozone is used
for sterilization and disinfection, oxygen that will not cause
secondary pollution is generated, so ozone is an environmentally
friendly disinfectant.
[0004] At present, ozone is widely used in many countries and
regions in the industries and fields such as sterilization of
drinking water and medical water, sewage treatment, air
sterilization in food factories and pharmaceutical factories, and
bleaching for papermaking. However, due to the fact that ozone is
prone to self-decomposition and is difficult to store, it is
generally prepared when it is used. At present, ozone is typically
prepared through the corona method, an electrolytic method, an
ultraviolet method, a nuclear radiation method, or a plasma method.
The corona discharge method and the electrolytic method are ozone
generation techniques that have been used in in food and
pharmaceutical industries and in hospitals. The corona discharge
method generates ozone through high-voltage corona discharge of a
dry oxygen-containing gas. This technique can generate a large
amount of ozone and can realize industrial production. However, the
corona discharge method has the following defects: when this method
is used to prepare ozone, a matching gas drying and generation
device and a cooling system need to be configured for drying the
gas, so the equipment has a large size, the investment cost is
high, the equipment is inconvenient to move, the concentration of
produced ozone is low, the volume ratio of ozone is 1%-6%, and an
ozone mixture contain a certain quantity of carcinogenic substances
such as oxynitride; and electrodes may be damaged due to
high-voltage discharge.
[0005] At present, when low-voltage water electrolysis is used to
prepare ozone, a membrane electrode assembly formed by an ion
exchange membrane, a cathode catalyst membrane and an anode
catalyst membrane is used to electrolyze water to generate ozone.
In the prior art, an ozone generator is provided with an anode
electrolysis cavity and two cathode electrolysis cavities which are
separate from each other, wherein the anode electrolysis cavity is
located in the middle, and the two cathode electrolysis cavities
are located on a left side and a right side of the anode
electrolysis cavity respectively; an anode plate, membranes and
cathode plates are disposed between the anode electrolysis cavity
and the cathode electrolysis cavities, the anode plate is located
in the anode electrolysis cavity, the cathode plates are located in
the cathode electrolysis cavities, and the anode electrolysis
cavity is isolated from the cathode electrolysis cavities connected
to the anode electrolysis cavity by the membranes with an
insulating property. However, due to the fact that the membranes
are too close to the electrodes, ozone water generated by
electrolysis cannot flow smoothly, so the heat dissipation
performance is unsatisfying, and the ozone water concentration in
unit area cannot be improved.
[0006] For example, when the existing ozone generator is used to
electrolyze an electrolytic solution, water enters an electrolysis
cell from a water inlet end, then enters a gap between an electrode
at the water inlet end and the membrane via through holes in the
electrode, then flows into a gap between the other membrane and the
electrode at a water outlet end via through holes or gaps in this
membrane, and finally flows outwards to the water outlet end via a
gap of the electrode at the water outlet end or via through holes
in the electrode at the water outlet end. The structure has the
following defects:
[0007] 1. In the electrolysis process of the ozone generator, a
water flow directly impacts the electrode at the water inlet end
after entering the electrolysis cell from the water inlet end, so
the electrode at the water inlet end floats drastically,
compromising the voltage stability and making the electrolysis
performance instable.
[0008] 2. When water flows in the electrolysis cell, the membrane
and the electrode at the water outlet end are both impacted by
water, so the distance between the electrode at the water inlet end
and the membrane and the distance between the electrode at the
water outlet end and the membrane are increased, which in turn
increases the operating voltage and energy consumption.
[0009] 3. In the electrolysis process of the ozone generator, the
water velocity is low, so ozone generated by electrolysis cannot be
taken away, and heat of the electrodes cannot be dissipated in
time.
BRIEF SUMMARY OF THE INVENTION
[0010] The objective of the invention is to solve the
above-mentioned problems by providing an electrolytic ozone
generator, which is stable in operating performance, low in energy
consumption, and beneficial to heat dissipation of electrodes in
the ozone preparing process, and is able to take away ozone rapidly
and improve the quantity of ozone dissolved in water, thus
increasing the ozone concentration.
[0011] The objective of the invention is realized through the
following technical solution:
[0012] An electrolytic ozone generator comprises a cavity, and
electrodes and a membrane that are disposed in the cavity, wherein
the electrodes comprise an anode and a cathode, and the membrane is
disposed between the anode and the cathode; a water inlet and a
water outlet are formed in two ends of the cavity respectively; the
membrane has a side face parallel and opposite to the anode and a
side face parallel and opposite to the cathode; through holes are
formed in the anode and/or the cathode, and the membrane is a
non-porous membrane; an annular guide channel is formed between a
periphery of the anode, the cathode and the membrane and an inner
wall of the cavity; a water distribution space is formed between
the water inlet and the electrode at a water inlet end and is
communicated with the annular guide channel and the through holes
in the electrode at the water inlet end; and the anode and the
cathode are electrically connected through water flowing through
the anode and the cathode.
[0013] The operating principle of the electrolytic ozone generator
is as follows:
[0014] During operation, water enters the cavity via the water
inlet and is divided into two paths in the water distribution
space; one path of water flows into a gap between the electrode at
the water inlet end and the membrane via the through holes in the
electrode at the water inlet end of the cavity, so as to be
electrolyzed, and this path of water is blocked by the membrane and
flows into the annular guide channel around the membrane, then part
of water enters a gap between the electrode at the water outlet end
and the membrane to be electrolyzed, and in the electrolysis
process, the anode generates ozone, and the cathode generate
hydrogen; after entering the water distribution space, the other
path of water is blocked by the electrode at the water inlet end
and is scattered around to enter the annular guide channel; by
controlling the relationship between the sectional area of the
annular guide channel and the sectional area of the through holes
in the electrode at the water inlet end, the water velocity in the
annular guide channel is made greater than the water velocity
between the electrode and the membrane to generate a Venturi effect
in the annular guide channel, a low pressure is formed near the
high-velocity in the annular guide channel, a pressure difference
is generated between the gap between the electrode and the
membrane, and the annular guide channel, and thus, ozone and ozone
water generated on the anode by electrolysis are sucked into the
annular guide channel under the effect of water in the annular
guide channel. In this way, prepared ozone can be taken away
rapidly, the quantity of ozone dissolved in water is increased, and
the ozone concentration is increased accordingly. Ozone and ozone
water are conveyed along the annular guide channel and are finally
discharged via the water outlet of the cavity, and thus, ozone
preparation is completed. The high-velocity water in the annular
guide channel can take away the heat of the electrode more rapidly,
so that the heat dissipation effect is improved.
[0015] In one preferred solution of the invention, an end face of
the anode faces the water inlet, and an end face of the cathode
faces the water outlet. That is, the anode is disposed at the water
inlet end, and the cathode is disposed at the water outlet end. By
adoption of this structure, when water enters the water
distribution space, one part of water enters the gap between the
anode and the membrane via the through holes in the anode so as to
be electrolyzed; the other part of water enters the annular guide
channel from the water distribution space and flows in the annular
guide channel rapidly to form a negative-pressure absorption effect
to take away ozone and ozone water generated by the anode in time;
because the anode is disposed at the water inlet end of the cavity,
the water velocity in the annular guide channel at the water inlet
end is higher, and thus, the ozone absorption capacity and speed of
the annular guide channel are further improved, and the quantity of
ozone dissolved in water is increased; in addition, the membrane is
of a non-porous structure, so all water entering the gap between
the anode and the membrane flows away along the annular guide
channel, and thus, all ozone generated by the anode in the
electrolysis process is taken away, and the quantity of ozone
dissolved in water is further increased. Moreover, part of water
flows through the through holes in the electrodes, the other part
of water flows in the annular guide channel, a cooling effect is
realized by the two paths of water, and more particularly, the
water flowing in the annular guide channel at a high velocity can
facilitate heat dissipation of the anode, so that the electrolytic
stability is improved, and the electrolytic performance is improved
accordingly.
[0016] In a preferred solution of the invention, the electrolytic
ozone generator further comprises a water inlet assembly located at
the water inlet end of the cavity; the water inlet assembly
comprises a water inlet pipe and a regulating port disposed on the
water inlet pipe and used for regulating a water velocity and
pressure, one end of the water inlet pipe is connected to a water
source, and the other end of the water inlet pipe is connected to
the water inlet; and water flowing out of the regulating port flows
back to the water source. By adoption of this structure, when the
electrodes generate too much heat due to excessively high power of
the electrodes, the water velocity of the water inlet pipe can be
increased through the regulating port to take away heat of the
electrodes, so that the electrodes are cooled, the power is
stabilized, and the service life of the electrodes is prolonged;
and the ozone absorption capacity of the annular guide channel is
improved by increasing the water velocity.
[0017] Further, a steel ball provided with a notch and used for
regulating a water flow is disposed in the regulating port, and the
water flow can be regulated by using steel balls with notches of
different sizes.
[0018] In one preferred solution of the invention, the through
holes of the anode are aligned with the through holes of the
cathode, and axial projections of the through holes of the anode
overlap with axial projections of the through holes of the
cathode.
[0019] In one preferred solution of the invention, the through
holes of the anode are staggered with the through holes of the
cathode, and the axial projections of the through holes do not
overlap with the axial projections of the through holes of the
cathode.
[0020] Preferably, multiple through holes are formed in the anode,
and multiple through holes are formed in the cathode. In this way,
the surface contact area of water with the anode or the cathode is
further enlarged, and the electrolytic efficiency is improved.
[0021] Further, the area of the through holes in the anode or
cathode accounts for 5%-80% of the total area of the anode or
cathode. In this way, the heat dissipation area of the anode and
the cathode with water is enlarged, so the ozone electrolysis
efficiency of the anode is improved, and high-concentration ozone
water is prepared; and the heat dissipation efficiency is improved,
the current density is increased by 10% without damaging the
membrane, and the service life of the membrane is further
improved.
[0022] In one preferred solution of the invention, a displacement
buffer zone for displacement buffer of the anode or the cathode is
disposed between the anode or the cathode and an inner wall of the
cavity. When the water pressure is too high or low, the anode or
the cathode can automatically adjust the distance between the anode
and the cathode through the displacement buffer zone to keep the
distance stable, so that the scouring force of the anode or the
cathode is improved.
[0023] Preferably, a buffer assembly for buffering a water pressure
applied to the anode or the cathode is disposed in the displacement
buffer zone.
[0024] Further, the buffer assembly is an elastic member, and the
elastic member is arranged in an axial direction and has an end
acting on the anode or the cathode and an end acting on the inner
wall of the cavity. Through the elastic member, the anode or the
cathode can automatically adjust a gap between the anode and the
cathode according to different water pressures in the cavity, so
the cavity can work normally under different water inputs without
causing damage to the anode or the cathode, the anode and the
cathode are kept stable in the electrolysis process, energy
consumption is reduced, the anode or the cathode is effectively
protected, and the service life of the anode or the cathode is
prolonged.
[0025] Preferably, the elastic member is any one of a spring, a
tower spring or an elastic piece.
[0026] Preferably, the membrane is a PEM which has good proton
conductivity and good electrochemical stability.
[0027] Preferably, the through holes of the anode and/or the
cathode are in any one of a circular shape, a triangular shape, a
rectangular shape, a trapezoidal shape, a square shape, a
parallelogram shape, a rhombus shape and an irregular shape.
[0028] Preferably, the cathode is made of any one of stainless
steel, carbon materials, metal materials, metal oxide, non-metal
conductive materials and composite materials; and the anode is made
of any one of diamond, platinum, titanium, electrolytic water
electrode wear-resistant materials, conductive ceramic, conductors,
carbon materials, graphite materials and other metal materials.
[0029] Compared with the prior art, the invention has the following
beneficial effects:
[0030] 1. According to the invention, through the water
distribution space, water is divided into two paths after entering
the cavity; one path of water flows into the gap between the
electrode at the water inlet end of the cavity and the membrane via
the through holes in the electrode at the water inlet end of the
cavity, so as to be electrolyzed; the other path of water flows in
the annular guide channel; water flowing through the first through
holes is blocked by the non-porous membrane, so that the water
velocity in this position is low, while the water velocity in the
annular guide channel is high, so an Venturi effect is generated in
the annular guide channel, a low pressure is formed near the
high-velocity water, a pressure difference is generated between the
gap between the electrode and the membrane, and the annular guide
channel, and thus, the water flow in the annular guide channel has
an adsorption effect on water between the electrode and the
membrane to suck ozone and ozone water generated on the anode by
electrolysis into the annular guide channel. In this way, prepared
ozone can be taken away quickly, the quantity of ozone dissolved in
water is increased, and the ozone concentration is increased
accordingly.
[0031] 2. According to the invention, after entering the water
distribution space, part of water flows through the through holes
in the anode or the cathode, the other part of water flows in the
annular guide channel, and the anode or the cathode which generates
a large amount of heat in the electrolysis process is cooled by
these two paths of water; and more importantly, water flowing in
the annular guide channel at a high velocity can take away heat of
the anode or the cathode more rapidly, so that the electrolytic
stability is improved, and the service life of the anode and the
cathode is prolonged.
[0032] 3. According to the invention, the effective contact area of
water with the electrodes is enlarged through the through holes in
the anode or the cathode, so that the electrolytic efficiency is
improved, and high-concentration ozone water can be prepared; and
the heat dissipation efficiency of the electrodes can be improved,
and thus, the service life of the electrodes is prolonged.
[0033] 4. According to the invention, when entering the gap between
the electrode at the water inlet end and the membrane via the
through holes in the electrode at the water inlet end, water will
be blocked by the non-porous membrane and scattered around, and the
membrane will move backwards under the impact force of water;
although the gap between the membrane and the electrode at the
water inlet end becomes larger, water is blocked by membrane and
will not impact the electrode at the water inlet end in the axial
direction, so the fluctuation of the distance between the anode and
the cathode is greatly reduced, thus reducing the working voltage
and energy consumption.
[0034] 5. According to the invention, after entering the water
distribution space, part of water flows through the through holes
in the anode or the cathode, and the other part of water flows in
the annular guide channel, so that the impact force applied to the
electrode at the water inlet end is reduced, the floating range of
the electrode at the water inlet end is greatly reduced, and thus,
the voltage stability is improved, and the electrolysis performance
is more stable.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0035] FIG. 1-FIG. 3 are structural views of a first specific
implementation of an electrolytic ozone generator according to the
invention, wherein FIG. 1 is a three-dimensional view, FIG. 2 is a
right view, and FIG. 3 is a front view.
[0036] FIG. 4 is a sectional view of the electrolytic ozone
generator in a vertical direction according to the invention.
[0037] FIG. 5 is a schematic diagram of the internal structure of a
cavity according to the invention.
[0038] FIG. 6-FIG. 7 are structural views of a third specific
implementation of the electrolytic ozone generator according to the
invention, wherein FIG. 6 is a three-dimensional view of the
electrolytic ozone generator without a water inlet assembly and a
spring, and FIG. 7 is a three-dimensional view of the internal
structure of a cavity.
[0039] FIG. 8 is a structural view of a fourth specific
implementation of the electrolytic ozone generator according to the
invention.
DETAILED DESCRIPTION OF THE INVENTION
[0040] To allow those skilled in the art to have a good
understanding of the technical solutions of the invention, the
invention will be further described below in conjunction with
embodiments and accompanying drawings. Clearly, the implementations
of the invention are not limited to the following description.
Embodiment 1
[0041] Referring to FIG. 1-FIG. 5, this embodiment provides an
electrolytic ozone generator, comprising a cavity 1, an anode 2 and
a cathode 3 disposed in the cavity 1, a proton exchange membrane 4
disposed between the anode 2 and the cathode 3, a water inlet
assembly 5 disposed at an end, close to the anode 2, of the cavity
1, and a spring 6 disposed at an end, close to the cathode 3, of
the cavity 1, wherein one end of the spring 6 acts on the cathode
3, and the other end of the spring 6 acts on an inner wall of the
cavity 1; a water inlet is formed in a water inlet end of the
cavity, a water outlet is formed in a water outlet end of the
cavity 1, the water inlet is communicated with the water inlet
assembly 5, the anode 2 is close to the water inlet, and the
cathode 3 is close to the water outlet. When the water pressure is
too high or too low, the cathode 3 can automatically adjust the
distance to the anode 2 under the action of the spring 6 according
to different water pressures in the cavity 1, so that the distance
between the cathode 3 and the anode 2 is kept stable, the cavity 1
can work normally under different water inputs without causing
damage to the cathode 3, the stability of the anode 2 and the
cathode 3 in the electrolysis process is guaranteed, energy
consumption is reduced, the cathode 3 is effectively protected, and
the service life of the cathode 3 and the anode 2 is prolonged.
[0042] Referring to FIG. 1-FIG. 5, an outer contour of the cavity
1, an outer contour of the anode 2, an outer contour of the cathode
3 and an outer contour of the membrane 4 are all rectangular, one
side face of the membrane 4 is parallel and opposite to the anode
2, and the other side face of the membrane 4 is parallel and
opposite to the cathode 3; six circular first through holes 201 are
formed in the anode 2 and are regularly distributed in the anode 2
in two rows; six second through holes 3-1 are formed in the cathode
3 and are regularly distributed in the cathode 3 in two rows; the
first through holes 2-1 are aligned with the second through holes
3-1, and axial projections of the first through holes 2-1 overlap
with axial projections of the second through holes 3-1; and the
membrane 4 is a non-porous membrane 4. By adoption of this
structure, the surface contact area of water with the anode 2 and
the cathode 3 can be effectively enlarged through the multiple
through holes, so the electrolytic efficiency is improved,
high-concentration ozone water can be prepared; electrolytic
products can be discharged in the circumferential direction as
quickly as possible via the multiple through holes and will not be
blocked, so the heat dissipation efficiency is improved, and energy
consumption is reduced. The non-porous membrane 4 is used, so water
will be scattered around under the action of the non-porous
membrane 4 when entering a gap between the anode 2 and the membrane
4 via the through holes in the anode 2, and the membrane 4 will
move backwards under the impact force of water; although the gap
between the membrane 4 and the anode 2 becomes larger, water is
blocked by membrane 4 and will not impact the cathode 3 in the
axial direction, so the distance between the anode 2 and the
cathode 3 is kept stable, thus guaranteeing the voltage stability
and further reducing energy consumption.
[0043] Referring to FIG. 1-FIG. 5, an annular peripheral gap exists
between the periphery of the anode 2, the cathode 3 and the
membrane 4 and an inner wall of the cavity 1, and forms an annular
guide channel 7; the ratio of the area of the first through holes
2-1 to the area of the annular guide channel 7 is 0.1-1; a water
distribution space 8 is formed between the water inlet and the
anode 2 and is communicated with the annular guide channel 7; the
anode 2 is connected to a positive electrode of a power supply, the
cathode 3 is connected to a negative electrode of the power supply,
and the anode 2 and the cathode 3 are electrically connected
through water (electrolytic solution). The power supply of the
anode 2 and the cathode 3 is turned on to electrolyze water in the
cavity 1, and in the electrolysis process, the anode 2 generates
ozone, and the cathode 3 generates hydrogen. After entering the
cavity 1, water is divided into two paths in the water distribution
space 8; one path of water flows into the gap between the anode 2
and the membrane 4 via the first through holes 2-1 of the anode 2
at the water inlet end of the cavity 1, so as to be electrolyzed;
the other path of water flows in the annular guide channel 7; water
flowing through the first through holes 2-1 is blocked by the
non-porous membrane 4, so that the water velocity in this position
is low, while the water velocity in the annular guide channel 7 is
increased, so an Venturi effect is generated in the annular guide
channel 7, a low pressure is formed near the high-velocity water, a
pressure difference is generated between the middle of the cavity 1
and the annular guide channel 7, and thus, gases and ozone water
generated on the anode 2 or the cathode 3 by electrolysis are
sucked into the annular guide channel 7 under the effect of water
in the annular guide channel 7. In this way, prepared ozone can be
taken away quickly, the quantity of ozone dissolved in water is
increased, and the ozone concentration is increased
accordingly.
[0044] As shown in FIG. 1-FIG. 5, the space between the cathode 3
and the inner wall of the cavity 1 forms a displacement buffer zone
9 for displacement buffer of the cathode 3, and the spring 6 is
disposed in the displacement buffer zone 9; when the water pressure
is too high or too low, the anode 2 or the cathode 3 can
automatically adjust the distance between the anode 2 and the
cathode 3 through the displacement buffer zone 9 to keep the
distance stable, so that the scouring force of the anode 2 or the
cathode 3 is improved.
[0045] As shown in FIG. 1-FIG. 5, the water inlet assembly 5
comprises a water inlet pipe 5-1 and a regulating port 5-1 disposed
on the water inlet pipe 5-1 and used for regulating a water
velocity and pressure, wherein one end of the water inlet pipe 5-1
is connected to a water source, and the other end of the water
inlet 5-1 is connected to the water inlet; water flowing out of the
regulating port 5-2 flows back to the water source; a steel ball
provided with a notch and used for regulating the water flow is
disposed in the regulating port 5-2, and steel balls with notches
of different sizes may be used to regulate the water flow. By
adoption of this structure, when the anode 2 generates too much
heat due to excessively high power of the anode 2, the water
velocity of the water inlet pipe 5-1 can be increased through the
regulating port 5-2 to take away heat of the anode 2, so that the
anode 2 is cooled, the power is stabilized, and the service life of
the anode 2 is prolonged; and the ozone absorption capacity of the
annular guide channel 7 is improved by increasing the water
velocity.
[0046] Referring to FIG. 1-FIG. 5, the area of the first through
holes 2-1 in the anode 2 accounts for 5%-80% of the total area of
the anode 2, and the area of the second through holes 3-1 in the
cathode 3 accounts for 5%-80% of the total area of the cathode 3.
In this way, the heat dissipation area of the anode 2 and the
cathode 3 with water is enlarged, so the ozone electrolysis
efficiency of the anode 2 is improved, and high-concentration ozone
water is prepared; and the heat dissipation efficiency is improved,
the current density is increased by 10% without damaging the
membrane 4, and the service life of the membrane 4 is further
improved.
[0047] Referring to FIG. 1-FIG. 5, the buffer assembly is an
elastic member that is arranged in an axial direction, one end of
the elastic member acts on the anode 2 or the cathode 3, and the
other end of the elastic member acts on the inner wall of the
cavity 1. Through the elastic member, the anode 2 or the cathode 3
can automatically adjust a gap between the anode 2 and the cathode
3 according to different water pressures in the cavity 1, so the
cavity 1 can work normally under different water inputs without
causing damage to the anode 2 or the cathode 3, the anode 2 and the
cathode 3 are kept stable in the electrolysis process, energy
consumption is reduced, the anode 2 or the cathode 3 is effectively
protected, and the service life of the anode 2 or the cathode 3 is
prolonged.
[0048] Referring to FIG. 1-FIG. 5, the anode 2 is made of diamond,
the cathode 3 is made of stainless steel, and the membrane 4 is a
PEM which has good proton electrical conductivity and
electrochemical stability.
[0049] Referring to FIG. 1-FIG. 5, the operating principle of the
electrolytic ozone generator is as follows:
[0050] During work, water is conveyed through the water inlet pipe
5-1, enters the cavity 1 via the water inlet, and is divided into
two paths in the water distribution space 8; one path of water
flows into the gap between the anode 2 and the membrane 4 via the
through holes in the anode 2 at the water inlet end of the cavity
1, so as to be electrolyzed, and this path of water is blocked by
the membrane 4 and enters the annular guide channel 7 around the
membrane 4; then, part of water enters the gap between the cathode
3 at the water outlet end and the membrane 4 to be electrolyzed,
and in the electrolysis process, the anode 2 generates ozone, and
the cathode 3 generates hydrogen; because the membrane 4 is of a
non-porous structure, water flowing in via the through holes in the
anode 2 at the water inlet end is blocked and flows at a low
velocity; after entering the water distribution space 8, the other
path of water is blocked by the anode 2 or the cathode 3 at the
water inlet end and is scattered around to enter the annular guide
channel 7. By controlling the relationship between the sectional
area of the annular guide channel 7 and the sectional area of the
through holes in the electrode at the water inlet end, the water
velocity in the annular guide channel 7 is made to be greater than
the water velocity in the gap between the electrode and the
membrane 4 to generate a Venturi effect in the annular guide
channel 7, a low pressure is formed near the high-velocity in the
annular guide channel 7, a pressure difference is generated between
the gap between the electrode and the membrane 4, and the annular
guide channel 7, and thus, gases and ozone water generated on the
anode 2 by electrolysis are sucked into the annular guide channel 7
under the effect of water in the annular guide channel 7. In this
way, prepared ozone can be taken away quickly, the quantity of
ozone dissolved in water is increased, and the ozone concentration
is increased accordingly. Ozone and ozone water are conveyed along
the annular guide channel 7 and are finally discharged via the
water outlet of the cavity, and thus, ozone preparation is
completed. The high-velocity water in the annular guide channel can
take away the heat of the electrode more rapidly, so that the heat
dissipation effect is improved.
[0051] The flow velocity in the annular guide channel 7 can be
regulated through the regulating port 5-1. When the anode 2 or the
cathode 3 generates to much heat due to excessively high power of
the anode 2 or the cathode 3, the flow velocity in the annular
guide channel 7 is increased to facilitate heat dissipation of the
anode 2 and the cathode 3; and because the anode 2 is close to the
water inlet, the flow velocity at the water inlet end of the
annular guide channel 7 is higher, so that the ozone absorption
capacity of the annular guide channel 7 is further improved, and
the quantity of ozone dissolved in water is increased.
[0052] Referring to the following table, the technical solution in
this embodiment is compared with another two technical solutions in
which the same anode 2, membrane 4 and cathode 3 are used. Wherein,
Table 1 shows test and comparison results of this embodiment and a
first technical solution (Patent Authorization Publication No.
CN107177861B), and the test conditions are that the area of the
electrodes in the first technical solution is twice that of the
electrodes in this embodiment, the water flow rate and the water
temperature remain unchanged, and the water conductivity test power
and concentration are changed. Table 2 shows test and comparison
results of this embodiment and a second technical solution (Patent
Authorization Publication No. CN109487293A), and the test
conditions are that the area of the electrodes in the second
technical solution is the same as that of the electrodes in this
embodiment, the current density is the same, the water flow rate
and the water temperature remain unchanged, and the water
conductivity test power and concentration are changed.
TABLE-US-00001 TABLE 1 First technical Water Electrical parameters
Embodiment solution 10 us/cm Voltage (V) 22 18 normal-temperature
Current (A) 0.4 0.4 water Power (W) 8.8 7.2 Ozone concentration 2.0
1.0 (ppm) 100 us/cm Voltage (V) 15 12 normal-temperature Current
(A) 0.4 0.4 Power (W) 6 4.8 Ozone concentration 1.8 0.9 (ppm)
TABLE-US-00002 TABLE 2 Second technical Water Electrical parameters
Embodiment solution 10 us/cm Voltage (V) 21 31 normal-temperature
Current (A) 0.4 0.4 water Power (W) 8.4 12.0 Ozone concentration
2.0 1.7 (ppm) 100 us/cm Voltage (V) 15 22 normal-temperature
Current (A) 0.4 0.4 water Power (W) 6 8.8 Ozone concentration 1.8
1.5 (ppm)
[0053] As can be seen from test data, the test result in Table 1 is
as follows: compared with the first technical solution, the
technical solution in this embodiment reduces the area of the
electrodes by 50% in the same water environment and increases the
ozone concentration in water by one time under the same
current.
[0054] The test result of Table 2 is as follows: compared with the
second technical solution, the technical solution in this
embodiment reduces energy consumption by 40% in the same water
environment and increases the ozone concentration in water by
20%.
Embodiment 2
[0055] This embodiment is basically identical with Embodiment 1 in
structure, and differs from Embodiment 1 in the following aspects:
the first through holes 2-1 of the anode 2 are staggered with the
second through holes 3-1 of the cathode 3, and axial projections of
the first through holes 2-1 do not overlap with axial projections
of the second through holes 3-1. In this way, the surface contact
area of water with the anode 2 or the cathode 3 can be effectively
enlarged, so the electrolytic efficiency is improved, and
high-concentration ozone water can be prepared; and electrolytic
products can be discharged in the circumferential direction as
quickly as possible and will not be blocked, so the heat
dissipation efficiency is improved, and energy consumption is
reduced.
Embodiment 3
[0056] Referring to FIG. 6-FIG. 7, this embodiment is basically
identical with Embodiment 1 in structure, and differs from
Embodiment 1 in the following aspects: the outer contour of the
cavity 1, the outer contour of the anode 2, the outer contour of
the cathode 4 and the outer contour of the membrane 4 are all
circular, one side face of the membrane 4 is parallel and opposite
to the anode 2, and the other side face of the membrane 4 is
parallel and opposite to the cathode 3; six circular first through
holes 2-1 are formed in the anode 2, one of the six first through
holes 2-1 is formed in the center of the anode 2, and the other
five first through holes are distributed in a ring array around the
center of the anode 2; six second through holes 3-1 are formed in
the cathode 3, one of the six second through holes 3-1 is formed in
the center of the cathode 2, the other five second through holes
3-1 are distributed in a ring array around the center of the
cathode 3; and the first through holes 2-1 are aligned with the
second through holes 3-1, and axial projections of the first
through holes 2-1 overlap with axial projections of the second
through holes 3-1. By adoption of this structure, the cavity 1 is
circular, so that water can flow smoothly in the annular guide
channel 7, and the ozone preparation speed is increased; multiple
through holes are arranged, so that the surface contact area of
water with the anode 2 or the cathode 3 can be effectively
enlarged, the electrolytic efficiency is improved, and
high-concentration ozone water can be prepared; and electrolytic
products can be discharged in the circumferential direction as
quickly as possible and will not be blocked, so the heat
dissipation efficiency is improved, and energy consumption is
reduced.
Embodiment 4
[0057] Referring to FIG. 8, this embodiment is basically identical
with Embodiment 1 in structure, and differs from Embodiment 1 in
the following aspects: the water inlet assembly 5 is disposed at an
end, close to the cathode 3, of the cavity 1, the spring 6 is
disposed at an end, close to the anode 2, of the cavity 1, and the
water distribution cavity 8 is formed between the cathode 3 and the
water inlet. That is, the cathode 3 is disposed at the water inlet
end of the cavity 1, and the anode 2 is disposed at the water
outlet end of the cavity 1. By adoption of this structure, the
cathode 3 is close to the water inlet, so that the water velocity
at the water inlet end of the annular guide channel 7 is higher,
hydrogen generated by the cathode 3 can be taken away, the cathode
3 is better cooled, the problem of scale accumulation in the
cathode 3 is solved, the voltage becomes stable with the reduction
of the scale, and the service life of the cathode 3 is
prolonged.
Embodiment 5
[0058] This embodiment is basically identical with Embodiment 1 in
structure, and differs from Embodiment 1 in the following aspect:
the first through holes 2-1 of the anode 2 and the second through
holes 3-1 of the cathode 3 may be in any one of a triangular shape,
a rectangular shape, a trapezoidal shape, a square shape, a
parallelogram shape, a rhombus shape and an irregular shape.
Embodiment 6
[0059] This embodiment is basically identical with Embodiment 1 in
structure, and differs from Embodiment 1 in the following aspects:
the buffer assembly is a magnetic device, a magnetic field
generated by the magnetic device acts on the electrodes to generate
an axial action force on the electrodes to counteract an impact
force applied to the electrodes by water, so that the electrodes
are kept balanced. For example, magnets with the same polarity may
be disposed on the inner wall of the cavity and the cathode to make
the cathode movable.
[0060] The above embodiments are preferred ones of the invention,
and the implementations of the invention are not limited to the
above content. Any transformations, modifications, substitutions,
combinations and simplifications made without departing from the
spirit and principle of the invention are equivalent replacements
falling within the protection scope of the invention.
* * * * *