WO2021212485A1

WO2021212485A1 - Electrolytic ozone generator

Info

Publication number: WO2021212485A1
Application number: PCT/CN2020/086753
Authority: WO
Inventors: 钟建华; 张文英; 潘裕富
Original assignee: 广州市德百顺电气科技有限公司
Priority date: 2020-04-22
Filing date: 2020-04-24
Publication date: 2021-10-28
Also published as: CN111304678A; US20220259747A1

Abstract

An electrolytic ozone generator, comprising a cavity (1), electrode sheets provided inside the cavity (1) and a membrane (4); the electrode sheets comprise a positive electrode sheet (2) and a negative electrode sheet (3); a water inlet and a water outlet are provided at two ends of the cavity (1) respectively; one side face of the membrane (4) is parallel with and opposite to the positive electrode sheet (2), and the other side face of the membrane (4) is parallel with and opposite to the negative electrode sheet (3); an annular flow guide channel (7) is provided among the periphery of the positive electrode sheet (2), the periphery of the negative electrode sheet (3) and the periphery of the membrane (4) and an inner wall of the cavity (1); a water flow distribution space (8) is provided between the water inlet and the electrode sheet at a water inlet end, and the water flow distribution space (8) is in communication with the annular flow guide channel (7) and a through-hole on the electrode sheet at the water inlet end respectively; and the positive electrode sheet (2) and the negative electrode sheet (3) are electrically connected by means of water flowing therethrough. The ozone generator can quickly take away the prepared ozone, increase the dissolved amount of ozone in water and further increase the ozone concentration, has stable operation performance and low energy consumption, and is beneficial to heat dissipation of an electrode sheet.

Description

An electrolytic ozone generator

Technical field

The invention relates to the technical field of ozone electrolysis devices, in particular to an electrolytic ozone generator.

Background technique

Ozone (O ₃ ) is an allotrope of oxygen (O ₂ ), which is a light blue gas with a special smell. Ozone is a strong oxidant. Because of its strong oxidizing power, it has strong sterilization and disinfection effects. Therefore, ozone is recognized as a broad-spectrum and high-efficiency sterilization and disinfectant in the world. More importantly, ozone produces oxygen after sterilization. Will produce secondary pollution, so it is a green and environmentally friendly disinfectant.

At present, in many countries and regions, ozone is widely used, such as drinking water purification, medical water disinfection, air purification, food purification, sewage treatment, planting and breeding, paper bleaching and other industries and fields. However, due to ozone It is easy to self-decompose and not easy to store. Therefore, when ozone is used, it is generally prepared and used. At present, the main methods for preparing ozone are corona method, electrolysis method, ultraviolet method, nuclear radiation method, plasma method and so on. The ozone generation technologies that have been put into use in food, hospitals, and pharmaceutical companies mainly include corona discharge and electrolysis. The corona discharge method is a method of generating ozone from dry oxygen-containing gas through corona high-voltage discharge. This technology produces a large amount of ozone and can realize industrial production, but it also has many shortcomings. In the process of using the corona method to prepare, because the gas needs to be dried, it is necessary to be equipped with excellent gas drying and generating devices and cooling systems, resulting in large equipment, high investment costs, and inconvenient movement, resulting in a very high concentration of ozone. Low, the volume of ozone accounts for 1% to 6%, and the ozone mixture contains a certain amount of nitrogen oxides and other carcinogens; the use of high-voltage discharge makes the electrode extremely easy to damage.

At present, the method for preparing ozone by low-pressure electrolysis of water mainly uses ion exchange membranes and cathode and anode catalyst membranes to form a membrane electrode assembly, and the membrane electrode assembly is used to electrolyze water to generate ozone. For example, an invention patent with an authorized announcement number CN107177861B discloses an ozone generator nozzle with a positive electrode electrolytic chamber and two negative electrolytic chambers that are separated independently. The negative electrolysis chamber is located on the left and right sides of the positive electrolysis chamber. The positive electrode plate, the membrane and the negative electrode plate are arranged between the positive electrode electrolytic cavity and the negative electrode electrolytic cavity. Diaphragms with insulating properties are isolated from each other. Since the diaphragm of the nozzle is closely attached to the electrode, it is difficult to flow the ozone water generated by electrolysis, so the heat dissipation performance is poor, and the concentration of ozone water generated per unit area cannot be increased.

For example, the invention patent application with publication number CN109487293A discloses an ozone electrolysis chamber electrolysis structure. When the ozone electrolysis chamber electrolysis structure electrolyzes the electrolytic solution, water enters the inside of the electrolysis chamber from the water inlet, and then passes through the water inlet. The through hole of the electrode sheet enters the gap between the electrode sheet at the water inlet and the diaphragm, and then flows through the through hole of the diaphragm or the gap of the diaphragm to the gap between the diaphragm and the electrode sheet at the water outlet, and then from the electrode sheet at the water outlet. The gap flows outward to the water outlet or from the through hole of the electrode sheet through the water outlet to the water outlet. The above structure has the following shortcomings:

1. The electrolysis structure of the ozone electrolysis chamber during the electrolysis process, after the water flow enters the electrolysis chamber through the water inlet end, all the water flow directly impacts the electrode pads at the water inlet end, which makes the electrode pads at the water inlet end have a large floating range and affects the stability of the voltage. The electrolysis performance is unstable.

2. In the process of water flowing in the electrolysis chamber, the diaphragm and the electrode sheet at the water outlet end are impacted by the water flow, so that the distance between the electrode sheet at the water inlet end and the diaphragm and the distance between the electrode sheet at the water outlet end and the diaphragm are both Increased, the working voltage increases, and the energy consumption increases.

3. In the electrolysis process of the ozone electrolysis chamber, the water flow speed is slow, which is not conducive to taking away the ozone generated by electrolysis and the heat dissipation of the electrode sheets.

Summary of the invention

The purpose of the present invention is to overcome the above-mentioned problems and provide an electrolytic ozone generator. In the process of preparing ozone, the structure has stable working performance, low energy consumption, and is beneficial to the heat dissipation of electrode sheets; and can quickly take away the preparation. The ozone, which increases the amount of ozone dissolved in water, thereby increasing the ozone concentration.

The purpose of the present invention is achieved through the following technical solutions:

An electrolytic ozone generator includes a cavity, an electrode sheet and a diaphragm arranged in the cavity, wherein the electrode sheet includes a positive electrode sheet and a negative electrode sheet, and the diaphragm is arranged between the positive electrode sheet and the diaphragm. Between the negative plates; wherein the two ends of the cavity are respectively provided with a water inlet and a water outlet; one side of the diaphragm is opposite to the positive plate in parallel, and the other side of the diaphragm is opposite to the negative electrode The plates are parallel to each other; characterized in that the positive plate and/or the negative plate are provided with through holes, the membrane is a non-through-hole membrane; the positive plate, the negative plate and the periphery of the membrane are An annular diversion channel is provided between the inner walls of the cavity; a water flow distribution space is provided between the water inlet and the electrode sheet at the water inlet end, and the water flow distribution space is connected to the annular diversion channel and the water inlet end respectively. The through holes on the electrode sheet are connected; the positive electrode sheet and the negative electrode sheet are electrically connected by the water flowing through the two.

The working principle of the above electrolytic ozone generator is:

When working, the water body enters the cavity from the water inlet and reaches the water distribution space. It is divided into two ways. One water body flows into the gap between the electrode sheet and the diaphragm at the water inlet end through the through hole of the electrode sheet at the water inlet end of the cavity. During electrolysis, this part of the water flows around the diaphragm into the annular diversion channel under the barrier of the diaphragm, and then part of the water enters between the electrode sheet and the diaphragm at the water outlet end for electrolysis. During the electrolysis process, the positive electrode electrolysis produces ozone. , The negative electrode plate electrolyzes to generate hydrogen; after another water body enters the water flow distribution space, the water flow spreads around and enters the annular diversion channel under the barrier of the electrode plate at the water inlet end; by adjusting the cross section of the annular diversion channel and the water inlet The size relationship of the through-hole section of the electrode sheet at the end can make the water flow velocity of the annular diversion channel greater than the water flow velocity between the electrode sheet and the diaphragm, so that the annular diversion channel has a Venturi effect, and the high-speed flow in the annular diversion channel Low pressure is generated near the water body, which causes a pressure difference between the gap between the electrode sheet and the diaphragm and the annular diversion channel. Therefore, the water flow in the annular diversion channel produces adsorption, which adsorbs the ozone and ozone water produced by electrolysis on the positive electrode sheet. Into the annular diversion channel, it can quickly take away the prepared ozone, increase the amount of ozone dissolved in the water, and then increase the ozone concentration. After the annular diversion channel is transported, the ozone and ozone water are finally discharged from the water outlet of the cavity. Complete the preparation of ozone. At the same time, the high-speed water flowing in the annular diversion channel is also conducive to accelerating the heat of the electrode plates and improving the heat dissipation effect.

In a preferred solution of the present invention, the end surface of the positive electrode sheet faces the water inlet, and the end surface of the negative electrode sheet faces the water outlet. That is, the positive electrode sheet is arranged at the water inlet end, and the negative electrode sheet is arranged at the water outlet end. The advantage of adopting the above structure is that when the water body enters the water flow distribution space, part of the water body enters the gap between the positive electrode sheet and the membrane through the through hole of the positive plate for electrolysis, and part of the water body enters the annular diversion channel from the water flow distribution space. The annular diversion channel flows quickly, forming a negative pressure adsorption effect, and takes away the positive plate in time to produce ozone and ozone water; because the positive plate is arranged at the water inlet end of the cavity, the flow velocity of the annular diversion channel at the water inlet end is faster, thereby further Improve the ability and speed of the annular diversion channel to absorb ozone, and increase the amount of ozone dissolved in the water; in addition, because the diaphragm has a non-through hole structure, all the water entering the gap between the positive plate and the diaphragm must be guided from the ring Flow away in the channel, so that all the ozone generated by the electrolysis of the positive electrode can be taken away, and the amount of ozone dissolved in the water is further improved. At the same time, part of the water body passes through the through holes of the electrode sheet, and part flows from the annular diversion channel. The flow of the two water bodies plays a cooling role, especially the fast-flowing water in the annular diversion channel, which is more conducive to the positive electrode sheet. The heat dissipation, thereby improving the stability of electrolysis, and then improving the electrolysis performance.

In a preferred solution of the present invention, the electrolytic ozone generator further includes a water inlet assembly located at the water inlet end of the cavity; the water inlet assembly includes a water inlet pipe and is arranged on the water inlet pipe for regulating water flow For the speed and pressure adjustment port, one end of the water inlet pipe is connected with the water source, and the other end is connected with the water inlet; the water body diverted from the adjustment port is returned to the water source. With the above structure, when the power of the electrode sheet is too large, the electrode sheet heats up seriously, and the water flow speed of the water inlet pipe is increased by setting the adjustment port to take away the heat of the electrode sheet, which has a cooling effect and also stabilizes the power. The service life of the electrode sheet is improved; in addition, speeding up the flow rate is also conducive to improving the ozone adsorption ability of the annular diversion channel.

Further, a steel ball with a gap for adjusting the water flow is provided in the adjustment port, and the water flow can be adjusted by replacing the steel balls with different sizes of gaps.

A preferred solution of the present invention, wherein the through holes of the positive electrode sheet and the negative electrode sheet are aligned with each other and the axial projections overlap.

A preferred solution of the present invention, wherein the through holes of the positive electrode sheet and the negative electrode sheet are staggered and the axial projections do not overlap.

Preferably, there are multiple through holes between the positive electrode sheet and the negative electrode sheet. The advantage is that the contact area between the water body and the surface of the positive electrode sheet or the negative electrode sheet is further increased, and the electrolysis efficiency is promoted.

Further, the area of the through holes of the positive electrode sheet or the negative electrode sheet accounts for 5% to 80% of the total area of the positive electrode sheet or the negative electrode sheet. The advantage of this arrangement is to increase the heat dissipation area of the water body and the positive electrode and the negative electrode. On the one hand, it promotes the ozone electrolysis efficiency of the positive electrode and prepares a higher concentration of ozone water. On the other hand, it improves the heat dissipation efficiency and increases the current density by 10%. Without burning the diaphragm, the service life of the diaphragm is further improved.

In a preferred solution of the present invention, a displacement buffer area for buffering the displacement of the positive electrode sheet or the negative electrode sheet is provided between the positive electrode sheet or the negative electrode sheet and the inner wall of the cavity. When the water pressure is too large or too small, the displacement buffer area can automatically adjust the distance between the positive electrode or the negative electrode according to the water pressure, so that the distance between the two tends to be stable, thereby increasing the positive electrode or the negative electrode. The role of scouring force.

Preferably, the displacement buffer zone is provided with a buffer assembly for buffering the water pressure on the positive electrode sheet or the negative electrode sheet.

Further, the buffer assembly is an elastic member, which is arranged axially, one end acts on the positive electrode sheet or the negative electrode sheet, and the other end acts on the inner wall of the cavity. By setting the elastic member, the gap between the positive electrode sheet or the negative electrode sheet and the diaphragm can be automatically adjusted according to the different water pressure in the cavity, so that the cavity can adapt to different water intake and can work normally without damaging the positive electrode sheet or the negative electrode sheet. The sheet ensures that the electrolysis process of the positive electrode sheet and the negative electrode sheet tends to be stable, which can reduce energy consumption while effectively protecting the positive electrode sheet or the negative electrode sheet and increase the service life.

Preferably, the elastic member is any one of a spring, a tower spring, or an elastic piece.

Preferably, the membrane is a PEM membrane, and the PEM membrane has good proton conductivity and good electrochemical stability.

Preferably, the through hole of the positive electrode sheet and/or the negative electrode sheet is any one of a circle, a triangle, a rectangle, a trapezoid, a square, a parallelogram, a diamond, or an irregular shape.

Preferably, the negative electrode sheet is any one of stainless steel, carbon materials, various metal materials, metal oxides, non-metal conductive materials, and composite materials; the positive electrode sheet material is diamond, platinum, titanium, electrolytic hydropower Extremely wear-resistant materials, or any of conductive ceramics, semiconductors, carbon materials, graphite materials and other metal materials.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, due to the provision of the water distribution space, the water body flows in two ways after entering the cavity, and one water body flows through the through hole of the electrode sheet at the water inlet end of the cavity to the water flow between the electrode sheet and the diaphragm at the water inlet end. The gap is electrolyzed, and the other way flows from the annular diversion channel. Because the diaphragm is a non-porous structure, it blocks the water passing through the through hole, making the water velocity slower at this place, while the water velocity in the annular diversion channel is faster , Make the annular diversion channel produce Venturi effect, low pressure is generated near the high-speed water body, so that the gap between the cavity electrode sheet and the diaphragm and the annular diversion channel produce a pressure difference, therefore, the annular diversion channel The water flow adsorbs the water in the gap between the electrode sheet and the diaphragm, and adsorbs the ozone and ozone water produced by the electrolysis on the positive sheet into the annular diversion channel, which can quickly take away the prepared ozone and increase the amount of ozone dissolved in water. In turn, the ozone concentration is increased.

2. In the present invention, when the water body enters the water flow distribution space, part of the water body passes through the through holes of the positive electrode sheet or the negative electrode sheet, and part flows from the annular diversion channel. The positive electrode sheet and the negative electrode sheet generate a large amount of heat during the electrolysis process. The two-way flow of water plays a role in cooling the positive electrode or negative electrode. More importantly, the rapid flow of water in the annular diversion channel can more quickly take away the heat of the positive electrode or negative electrode, which not only improves the electrolysis The stability also improves the service life of the positive electrode sheet and the negative electrode sheet.

3. In the present invention, since the positive electrode sheet or the negative electrode sheet is provided with through holes, the effective contact area between the water body and the electrode sheet is enlarged, the electrolysis efficiency is improved, and a higher concentration of ozone water can be prepared, and at the same time, the electrode sheet can be improved. The heat dissipation efficiency improves the service life of the electrode sheet.

4. In the present invention, when the water body enters the gap between the electrode sheet and the diaphragm at the water inlet end from the through hole of the electrode sheet at the water inlet end, since the diaphragm is a non-through-hole diaphragm, the water body is on the diaphragm. Under the blocking action, the diaphragm will move backwards under the impact force of the water body. Although the gap between the diaphragm and the electrode sheet at the water inlet end becomes larger, due to the barrier of the diaphragm, the electrode sheet at the water outlet end Without axial impact force, the fluctuation distance between the positive electrode sheet and the negative electrode sheet is greatly reduced, thereby reducing the working voltage and reducing the energy consumption.

5. In the present invention, after the water flow enters the water distribution space through the water inlet, part of the water passes through the through holes of the positive electrode or negative electrode, and part flows from the annular diversion channel, thereby reducing the impact on the electrode plates of the water inlet. The force greatly reduces the floating amplitude of the electrode sheet at the water inlet end, improves the stability of the voltage, and makes the electrolysis performance more stable.

Description of the drawings

1 to 3 are schematic diagrams of the structure of the first specific embodiment of an electrolytic ozone generator in the present invention, wherein FIG. 1 is a perspective view, FIG. 2 is a right side view, and FIG. 3 is a front view.

Figure 4 is a vertical cross-sectional view of an electrolytic ozone generator in the present invention.

Fig. 5 is a schematic diagram of the internal structure of the cavity in the present invention.

Figures 6-7 are structural diagrams of a third specific embodiment of an electrolytic ozone generator in the present invention, in which Figure 6 is a perspective view with the water inlet component and spring omitted, and Figure 7 is the internal structure of the cavity Perspective view.

Fig. 8 is a schematic structural diagram of a fourth specific embodiment of an electrolytic ozone generator in the present invention.

Detailed ways

In order to enable those skilled in the art to understand the technical solutions of the present invention well, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to Figures 1 to 5, an electrolytic ozone generator in this embodiment includes a cavity 1, a positive electrode plate 2, a negative electrode plate 3 arranged in the cavity 1, and a positive electrode plate 2 and The membrane 4 for proton exchange between the negative plates 3, the water inlet assembly 5 arranged at the end of the cavity 1 close to the positive plate 2 and the end of the cavity 1 close to the negative plate 3 Spring 6; wherein one end of the spring 6 acts on the negative plate 3, and the other end acts on the inner wall of the cavity 1; the water inlet of the cavity 1 is provided with a water inlet, and the water outlet is provided with The water outlet, the water inlet is in communication with the water inlet assembly 5, the positive plate 2 is close to the water inlet, and the negative plate 3 is close to the water outlet. By setting the spring 6, when the water pressure is too high or too low, the negative plate 3 can automatically adjust the distance between the negative plate 3 and the positive plate 2 under the action of the spring 6 according to the different water pressure in the cavity 1, so that the difference between the two is The distance between them tends to be stable, so that the cavity 1 can adapt to different water intakes and can work normally without damaging the negative electrode 3, ensuring the stability of the electrolysis process of the positive electrode 2 and the negative electrode 3, and reducing energy consumption at the same time , Can also effectively protect the negative electrode sheet 3, and improve the service life of the negative electrode sheet 3 and the positive electrode sheet 2.

Referring to Figures 1 to 5, the contours of the cavity 1, the positive electrode sheet 2, the negative electrode sheet 3, and the diaphragm 4 are all rectangular, and one of the sides of the diaphragm 4 is connected to the positive electrode. The sheet 2 is opposed in parallel, and the other side of the diaphragm 4 is parallel to the negative sheet 3; the positive sheet 2 is provided with a circular first through hole 2-1, and the first through hole 2-1 The number of is 6, which are evenly arranged on the positive electrode sheet 2 in two rows; the negative electrode sheet 3 is provided with second through holes 3-1, and the number of the second through holes 3-1 is 6, Arranged evenly on the negative plate 3 in two rows, the first through holes 2-1 and the second through holes 3-1 are aligned with each other and the axial projections overlap; the diaphragm 4 has no through holes Diaphragm 4. With the above structure, by providing multiple through holes, the surface contact area between the water body and the positive electrode sheet 2 and the negative electrode sheet 3 can be effectively promoted, which not only promotes the electrolysis efficiency but also prepares ozone water with a higher concentration, so that the electrolysis product can be discharged as soon as possible. Without restraint, the heat dissipation efficiency is improved, and the energy consumption is reduced. Adopting the non-porous membrane 4 structure, when the water enters the gap between the positive electrode 2 and the membrane 4 from the through hole of the positive electrode plate 2, since the membrane 4 is a non-porous membrane 4, the water body is in the membrane 4 Under the blocking action of the diaphragm 4, the diaphragm 4 will move backwards under the impact of the water body. Although the gap between the diaphragm 4 and the positive electrode 2 becomes larger, the negative electrode 3 is blocked by the diaphragm 4. Due to the axial impact force, the distance between the positive electrode sheet 2 and the negative electrode sheet 3 tends to be stable, thereby ensuring the stability of the voltage and further reducing the energy consumption.

1 to 5, there is a peripheral annular gap between the positive electrode sheet 2, the negative electrode sheet 3, and the diaphragm 4 and the inner wall of the cavity 1, and the peripheral annular gap constitutes an annular diversion channel 7; The ratio of the area of the first through hole 2-1 to the area of the annular diversion channel 7 is between 0.1 and 1; a water flow distribution space 8 is provided between the water inlet and the positive electrode plate 2, so The water flow distribution space 8 is in communication with the annular diversion channel 7; the positive electrode sheet 2 is connected to the positive electrode of the power source, the negative electrode sheet 3 is connected to the negative electrode of the power source, and between the positive electrode sheet 2 and the negative electrode sheet 3 The electrical connection is achieved through a body of water (electrolytic solution). The power supply of the positive electrode sheet 2 and the negative electrode sheet 3 is switched on, so that the water in the cavity 1 is electrolyzed, the positive electrode sheet 2 electrolyzes to produce ozone, and the negative electrode sheet 3 electrolyzes to produce hydrogen gas. Due to the provision of the water distribution space 8, the water enters the cavity 1 and then flows in two ways. One way of water flows through the first through hole 2-1 of the positive plate 2 at the water inlet of the cavity 1 and flows between the positive plate 2 and the diaphragm 4. The other way flows from the annular diversion channel 7. Because the diaphragm 4 is a non-porous structure, it blocks the water passing through the first through hole 2-1, which makes the water velocity slower. The water flow velocity of the diversion channel 7 increases, causing the annular diversion channel 7 to have a Venturi effect, and low pressure is generated near the high-speed water body, causing a pressure difference between the middle of the cavity 1 and the annular diversion channel 7. Therefore, the annular diversion channel 7 The water flow in the flow channel 7 produces an adsorption effect, which absorbs the gas and ozone water produced by the electrolysis on the positive electrode sheet 2 or the negative electrode sheet 3 into the annular diversion channel 7, which can quickly take away the prepared ozone and increase the amount of ozone dissolved in water. In turn, the ozone concentration is increased.

1 to 5, the space between the negative plate 3 and the inner wall of the cavity 1 constitutes a displacement buffer 9 for the negative plate 3 to buffer the displacement, and the spring 6 is arranged in the displacement buffer. On zone 9, when the water pressure is too large or too small, the displacement buffer zone 9 can automatically adjust the distance between the positive electrode sheet 2 or the negative electrode sheet 3 according to the water pressure, so that the distance between the two tends to be stable. Thus, the effect of the scouring force of the positive electrode sheet 2 or the negative electrode sheet 3 is increased.

1 to 5, the water inlet assembly 5 includes a water inlet pipe 5-1 and a regulating port 5-2 arranged on the water inlet pipe 5-1 for adjusting the water flow speed and pressure, the water inlet pipe 5- One end of 1 is connected to the water source, and the other end is connected to the water inlet; the water body divided and discharged from the regulating port 5-2 is returned to the water source; the regulating port 5-2 is provided with a notched valve for regulating water flow The steel ball can adjust the water flow by replacing the steel ball with different size gaps. With the above structure, when the power of the positive electrode plate 2 is too large, the positive electrode plate 2 will generate serious heat. Adjust by setting the adjustment port 5-2 to increase the water flow speed of the water inlet pipe 5-1, thereby taking away the heat of the positive electrode plate 2 and starting The cooling effect also stabilizes the power and improves the service life of the electrode sheet; in addition, speeding up the flow rate is also beneficial to improving the ozone adsorption ability of the annular diversion channel 7.

1 to 5, the area of the first through hole 2-1 of the positive electrode sheet 2 occupies 5%-80% of the total area of the positive electrode sheet 2; the area of the second through hole 3-1 of the negative electrode sheet 3 occupies The total area of the negative electrode sheet 3 is 5%-80%. The advantage of this arrangement is to increase the heat dissipation area of the water body and the positive electrode sheet 2 and the negative electrode sheet 3. On the one hand, it promotes the ozone electrolysis efficiency of the positive electrode sheet 2 and prepares a higher concentration of ozone water. On the other hand, it improves the heat dissipation efficiency and increases the current density. 10% does not burn the diaphragm 4, further improving the service life of the diaphragm 4.

Referring to FIGS. 1 to 5, the buffer assembly is an elastic member, which is arranged axially, one end acts on the positive electrode sheet 2 or the negative electrode sheet 3, and the other end acts on the inner wall of the cavity 1. By setting the elastic member, the gap between the positive electrode sheet 2 or the negative electrode sheet 3 and the diaphragm 4 can be automatically adjusted according to the different water pressure in the cavity 1, so that the cavity 1 can adapt to different water intakes and can work normally. Without damaging the positive electrode sheet 2 or the negative electrode sheet 3, the electrolysis process of the positive electrode sheet 2 and the negative electrode sheet 3 is ensured to stabilize, which reduces energy consumption, while also effectively protecting the positive electrode sheet 2 or the negative electrode sheet 3 and increasing the service life.

1 to 5, the material of the positive electrode sheet 2 is diamond, the negative electrode sheet 3 is a stainless steel material, and the diaphragm 4 is a PEM film. The PEM film has good proton conductivity and good electrochemical stability.

Refer to Figure 1 to Figure 5, the working principle of the above electrolytic ozone generator is:

When working, the water body is transported by the water inlet pipe 5-1, enters the cavity 1 from the water inlet, and reaches the water flow distribution space 8. Electrolysis is carried out in the gap between the positive electrode sheet 2 and the diaphragm 4 at the water inlet. This part of the water flows around the diaphragm 4 into the annular diversion channel 7 under the barrier of the diaphragm 4, and then part of the water enters the negative electrode at the water outlet. Electrolysis is carried out between the sheet 3 and the diaphragm 4. During the electrolysis process, the positive sheet 2 electrolyzes to generate ozone, and the negative sheet 3 electrolyzes to generate hydrogen; since the diaphragm 4 has a non-porous structure, it blocks the passage of the positive sheet 2 at the water inlet end. The water body through the hole makes the water velocity slower. After the other water body enters the water flow distribution space 8, under the block of the positive plate 2 or the negative plate 3 at the water inlet end, the water flows around and enters the annular diversion. Channel 7. By adjusting the size relationship between the cross section of the annular diversion channel 7 and the cross section of the through hole of the electrode sheet at the water inlet end, the water flow velocity of the circular diversion channel 7 can be greater than the water flow velocity between the electrode sheet and the diaphragm 4, so that the annular diversion Venturi effect occurs in the channel 7, and low pressure is generated near the high-speed water flowing in the annular diversion channel 7, so that the gap between the electrode sheet and the diaphragm 4 and the annular diversion channel 7 generate a pressure difference. Therefore, the annular diversion channel The water flow in 7 produces an adsorption effect, which adsorbs the ozone and ozone water produced by electrolysis on the positive electrode sheet 2 into the annular diversion channel 7, which can quickly take away the prepared ozone, increase the amount of ozone dissolved in water, and thereby increase the ozone concentration. After being transported by the annular diversion channel 7, the ozone and ozone water are finally discharged from the water outlet of the cavity to complete the preparation of ozone. At the same time, the high-speed water flowing in the annular diversion channel 7 is also beneficial to accelerate the heat of the electrode plates and improve the heat dissipation effect.

The flow rate of the annular diversion channel 7 can be adjusted through the adjustment port 5-2. When the power of the positive electrode plate 2 and the negative electrode plate 3 is too large and the heat is severe, by increasing the flow rate of the annular diversion channel 7, it is beneficial to the positive electrode plate 2 and the negative electrode plate 3. The heat dissipation of the negative electrode; since the positive electrode plate 2 is close to the water inlet, the flow velocity at the water inlet end of the annular diversion channel 7 is faster, thereby further improving the ozone absorption ability of the annular diversion channel 7 and increasing the amount of ozone dissolved in water.

Refer to the following table. The technical solution in this embodiment is tested and compared with the other two technical solutions to compare the material selections of the positive electrode sheet 2, the membrane sheet 4, and the negative electrode sheet 3 used for the two technical solutions. , Table 1 is a test comparison between this embodiment and the first technical solution (patent authorization announcement number CN107177861B). The test conditions are: the area of the electrode sheet of the first technical solution is twice that of this embodiment, and the water flow rate and water temperature are No change, change the water conductivity to test the power consumption and concentration. Table 2 is a test comparison between this embodiment and the second technical solution (patent application publication number CN109487293A). The test conditions are: the area of the electrode sheet of the second technical solution is the same as the area of the electrode sheet of this embodiment, and the current density In the same way, the water flow rate and water temperature remain unchanged, and the water conductivity is changed to test the power consumption and concentration.

Table 1

Table 2

It can be known from the test data that the test results in Table 1 are: the technical solution of this embodiment is compared with the first technical solution. In the same water environment, this embodiment reduces the area of the electrode sheet by 50%. Under the same current, The ozone concentration in the water doubled.

The test results in Table 2 are: the technical solution of this embodiment is compared with the second technical solution. In the same water environment, this embodiment reduces energy consumption by 40%, and under the same current density, the ozone concentration in water increases by 20%. %.

Example 2

The other structure in this embodiment is the same as that in embodiment 1, except that: the first through hole 2-1 of the positive electrode sheet 2 and the second through hole 3-1 of the negative electrode sheet 3 are staggered and axially The projections do not overlap. The above structure can effectively promote the surface contact area between the water body and the positive electrode sheet 2 or the negative electrode sheet 3, not only can promote the electrolysis efficiency, but also can prepare a higher concentration of ozone water, so that the electrolysis product can be discharged as soon as possible without inhibiting it. Improve heat dissipation efficiency and reduce energy consumption.

Example 3

Referring to FIGS. 6-7, the other structures in this embodiment are the same as those in Embodiment 1, except that: the shape of the cavity 1, the positive electrode plate 2, the negative electrode plate 3, and the diaphragm 4 The contours are all round, one side of the diaphragm 4 is parallel to the positive electrode plate 2 and the other side of the diaphragm 4 is parallel to the negative electrode plate 3; the positive electrode plate 2 is provided with a circle The number of the first through holes 2-1 is six, one of which is set at the center of the positive electrode plate 2, and the remaining five are around the center of the positive electrode plate 2. Circumferential array; the negative plate 3 is provided with second through holes 3-1, the number of the second through holes 3-1 is 6, one of which is set at the center of the positive plate 2, and the remaining 5 are around In the circumferential array of the center of the positive electrode plate 2, the first through holes 2-1 and the second through holes 3-1 are aligned with each other and the axial projections overlap. With the above structure, the circular cavity 1 is provided to facilitate the flow of water in the annular diversion channel 7 in the cavity 1, and the speed of ozone production is increased; by providing multiple through holes, it is possible to effectively promote the interaction between the water and the positive plate 2 The surface contact area of the negative electrode sheet 3 can not only promote the efficiency of electrolysis, but also prepare ozone water with a higher concentration, so that the electrolysis product can be discharged in a circumferential direction as soon as possible without inhibiting, improving heat dissipation efficiency and reducing energy consumption.

Example 4

Referring to Fig. 8, the other structure in this embodiment is the same as that in embodiment 1, except that: the water inlet assembly 5 is arranged at one end of the cavity 1 close to the negative electrode plate 3, and the spring 6 is arranged at The cavity 1 is close to one end of the positive electrode sheet 2, and a water flow distribution space 8 is formed between the negative electrode sheet 3 and the water inlet. That is, the negative electrode sheet 3 is arranged at the water inlet end of the cavity 1, and the positive electrode sheet 2 is arranged at the water outlet end of the cavity 1. With the above structure, the negative electrode plate 3 is close to the water inlet, and the flow velocity at the water inlet end of the annular diversion channel 7 is faster, which is beneficial to take away the negative electrode plate 3 to generate hydrogen, and also has a better heat dissipation effect on the negative electrode plate 3, making the negative electrode The fouling problem in the sheet 3 is solved. As the fouling decreases, the voltage tends to be stable, which is beneficial to prolong the service life of the negative sheet 3.

Example 5

The other structure in this embodiment is the same as that in embodiment 1, except that: the first through hole 2-1 of the positive electrode sheet 2 and the second through hole 3-1 of the negative electrode sheet 3 can also be triangular , Rectangle, trapezoid, square, parallelogram, rhombus and irregular shape.

Example 6

The other structure in this embodiment is the same as that of embodiment 1, except that: the buffer assembly is a magnetic device, and the magnetic field generated by the magnetic device acts on the electrode sheet to generate an axial force on the electrode sheet, which is used to balance the electrode sheet. The impact force of the water flow makes it in a balanced state. For example, when the negative electrode sheet needs to be set in a movable state, the inner wall of the cavity and the negative electrode sheet can be equipped with magnets of the same sex to achieve the above function.

The above are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above content, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention, All should be equivalent replacement methods, and they are all included in the protection scope of the present invention.

Claims

An electrolytic ozone generator includes a cavity, an electrode sheet and a diaphragm arranged in the cavity, wherein the electrode sheet includes a positive electrode sheet and a negative electrode sheet, and the diaphragm is arranged between the positive electrode sheet and the diaphragm. Between the negative plates; wherein the two ends of the cavity are respectively provided with a water inlet and a water outlet; one side of the diaphragm is opposite to the positive plate in parallel, and the other side of the diaphragm is opposite to the negative electrode The plates are parallel to each other; characterized in that the positive plate and/or the negative plate are provided with through holes, and the membrane is a non-through-hole membrane; the positive plate, the negative plate and the periphery of the membrane are An annular diversion channel is provided between the inner walls of the cavity; a water flow distribution space is provided between the water inlet and the electrode sheet at the water inlet end, and the water flow distribution space is connected to the annular diversion channel and the water inlet end respectively. The through holes on the electrode sheet are connected; the positive electrode sheet and the negative electrode sheet are electrically connected by the water flowing through the two.
The electrolytic ozone generator according to claim 1, wherein the end face of the positive electrode sheet faces the water inlet, and the end face of the negative electrode sheet faces the water outlet.
The electrolytic ozone generator according to claim 1 or 2, wherein the electrolytic ozone generator further comprises a water inlet component at the water inlet end of the cavity; the water inlet component comprises a water inlet pipe And a regulating port provided on the water inlet pipe for adjusting the water flow speed and pressure, one end of the water inlet pipe is connected to the water source, and the other end is connected to the water inlet; Water source.
The electrolytic ozone generator according to claim 3, characterized in that a steel ball with a gap for adjusting the water flow is provided in the adjusting port, and the water flow can be adjusted by replacing the steel balls with different sizes of gaps.
The electrolytic ozone generator according to any one of claims 1, 2 or 4, wherein the through holes of the positive electrode sheet and the negative electrode sheet are aligned with each other and the axial projections overlap.
The electrolytic ozone generator according to any one of claims 1, 2 or 4, wherein the through holes of the positive electrode sheet and the negative electrode sheet are staggered and the axial projections do not overlap.
The electrolytic ozone generator according to any one of claims 1, 2 or 4, wherein there are multiple through holes between the positive electrode sheet and the negative electrode sheet.
The electrolytic ozone generator according to any one of claims 1, 2 or 4, wherein the area of the through holes of the positive electrode sheet or the negative electrode sheet accounts for 5% of the total area of the positive electrode sheet or the negative electrode sheet -80%.
The electrolytic ozone generator according to any one of claims 1, 2 or 4, characterized in that, between the positive electrode sheet or the negative electrode sheet and the inner wall of the cavity is provided for the positive electrode sheet Or the displacement buffer of the negative plate for displacement buffering.
The electrolytic ozone generator according to claim 9, wherein the displacement buffer area is provided with a buffer component for buffering the water pressure on the positive electrode sheet or the negative electrode sheet.
The electrolytic ozone generator according to claim 10, wherein the buffer assembly is an elastic member, the elastic member is arranged axially, one end acts on the positive electrode sheet or the negative electrode sheet, and the other end acts on the positive electrode sheet or the negative electrode sheet. On the inner wall of the cavity.
The electrolytic ozone generator according to claim 11, wherein the elastic member is any one of a spring, a tower spring, or a shrapnel.
The electrolytic ozone generator according to any one of claims 1, 2 or 4, wherein the membrane is a PEM membrane.
The electrolytic ozone generator according to claim 1, wherein the through holes of the positive electrode sheet and/or the negative electrode sheet are circular, triangular, rectangular, trapezoidal, square, parallelogram, rhombus or Any of irregular shapes.
The electrolytic ozone generator according to any one of claims 1, 2 or 4, wherein the negative electrode sheet is made of stainless steel, carbon materials, various metal materials, metal oxides, and non-metal conductive materials. And any one of the composite materials; the positive electrode material is diamond, platinum, titanium, electrolytic water electrode wear-resistant materials, or conductive ceramics, semiconductors, carbon materials, graphite materials and other metal materials.