Photoelectrocatalytic sterilization and deodorization device

Abstract

The present invention discloses a photoelectric catalytic sterilization and deodorization device, comprising a purification device, an ozone sensor and a refrigerator, wherein the purification device is arranged in the refrigerator, and the ozone sensor is arranged on the inner wall of the refrigerator; the purification device comprises a shell and an adsorption plate, an air inlet is provided on the first side of the shell, an air outlet is provided on the second side of the shell, and the air outlet is parallel to the ozone sensor, an adsorption plate is provided in the shell, an electrode plate is provided on the first side of the adsorption plate, a light plate is provided on the second side of the adsorption plate, a fan is provided on the side of the light plate away from the adsorption plate, and a deozonation plate is provided on the side of the fan away from the light plate. The present invention can inhibit food corruption while maintaining a fresh and safe storage environment in the refrigerator compartment and inhibiting the growth of food microorganisms, thereby ensuring the health and hygiene of consumers.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a photoelectric catalytic sterilization and odor removal device. Background Art

[0002] As people's quality of life improves, refrigerators are becoming more and more popular. However, in actual use, while refrigerators improve people's quality of life, they also cause some problems, such as the odor caused by food corruption and the smell of various foods, which leads to poor air quality in the refrigerator, and the growth of bacteria in food and air will further accelerate food spoilage and cause unsanitary food storage environment, thus affecting the health of consumers.

[0003] Currently, most refrigerator deodorization technologies use adsorption materials, which can easily cause secondary pollution, and there are very few purification methods that can integrate sterilization and deodorization. Simple electrostatic technology can easily produce ozone, which will have a negative corrosive effect on refrigerator materials, while photocatalyst technology has the disadvantages of incomplete deodorization and poor sterilization effect. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one purpose of the present invention is to provide a photoelectric catalytic sterilization and deodorization device, which can inhibit food corruption while maintaining a fresh and safe storage environment in the refrigerator compartment and inhibiting the growth of food microorganisms, thereby ensuring the health and hygiene of consumers.

[0005] The photoelectrocatalytic sterilization and deodorization device according to an embodiment of the present invention comprises a purification device and an ozone sensor;

[0006] The purification device includes a shell and an adsorption plate. The thickness of the adsorption plate is between 5mm and 15mm. An air inlet is opened on the first side of the shell, and an air outlet is opened on the second side of the shell. Along the air inlet toward the air outlet, an electrode plate, an adsorption plate, an ultraviolet component, a fan, and an ozone removal plate are sequentially arranged inside the shell. The ozone sensor is used to detect the ozone concentration in the air discharged from the air outlet.

[0007] In some embodiments of the present invention, the adsorption plate surface is coated with a first catalytic coating, the material of the first catalytic coating is a photocatalyst and a precious metal ion, which can extend the life of the catalyst and enhance the catalytic ability, the deozonation plate surface is coated with a second catalytic coating, the material of the second catalytic coating is Mn ions or Cu ions, and the deozonation plate contains Mn ions, Cu ions and other catalyst coatings that can eliminate ozone. Due to the superposition of energy catalysis, a certain negative ozone effect will be generated in the process of degrading VOC and sterilizing. Therefore, the deozonation plate is used to adsorb and decompose ozone, eliminating the negative corrosive effect of ozone on refrigerator materials.

[0008] In some other embodiments of the present invention, ultraviolet lamps are installed on the lamp board, the number of the ultraviolet lamps is 1-9, and the ultraviolet lamps in the lamp board are composed of UVC270-285nm band or UVB365-385nm. The adsorption plate irradiates the ultraviolet light on the lamp board and at the same time applies pressure on the electrode plate to avoid hole-electron recombination and improve the purification efficiency in the refrigerator.

[0009] In some other embodiments of the present invention, the purification device further includes a controller and a high-voltage package, both of which are arranged in the shell, and the controller is signal-connected to the electrode plate, the fan, and the lamp board.

[0010] In other embodiments of the present invention, the adsorption plate and the deozonation plate are both honeycomb structures.

[0011] In other embodiments of the present invention, the electrode plate structure is in the shape of a metal mesh or a multi-needle-tip discharge shape.

[0012] In other embodiments of the present invention, the material of the adsorption plate is one of alumina ceramics, nickel foam, and carbon fiber.

[0013] In other embodiments of the present invention, a refrigerator is provided, wherein the purification device of the photoelectrocatalytic sterilization and odor purification device is arranged on the inner wall of the refrigerator's refrigerator compartment, and the ozone sensor of the photoelectrocatalytic sterilization and odor purification device is arranged on the side wall of the refrigerator's refrigerator compartment. In order to avoid the negative effects of ozone, an ozone sensor is installed on the side wall of the refrigerator in the direction of the air outlet to monitor the ozone content during the operation of the device to timely accelerate the elimination of ozone or accelerate the speed of the air purification cycle.

[0014] In some other embodiments of the present invention, the method steps are as follows:

[0015] S1: When starting the purification device, the electrode plate voltage is modulated to the first gear, and the fan speed is set to 1500-3000r / min;

[0016] S2: The ozone sensor starts to monitor the ozone concentration in the air discharged from the air outlet, and monitors whether the ozone concentration value increases within the preset time T1;

[0017] S3: If the ozone concentration value rises, the electrode plate voltage remains unchanged and the fan speed is set to 750-1500r / min. Otherwise, the electrode plate voltage is adjusted to the second gear and the fan speed is set to 1500-3000r / min.

[0018] S4: After the electrode plate and the fan are started, the purification device operates normally, the electrode plate voltage is set to the first gear and the fan speed is set to 1500-3000r / min;

[0019] S5: After the purification device runs for the preset time T2, the ozone sensor monitors the ozone concentration data and uploads it to the controller. The controller determines whether the ozone concentration is lower than 0.02ppm. If it is higher than 0.02ppm, the discharge voltage is switched to the first gear and the fan speed is set to 1500-3000r / min. If it is lower than 0.02ppm, the electrode plate discharge voltage is switched to the second gear and the fan speed is set to 750-1500r / min.

[0020] S6: After the purification device runs for the preset time n*T3, the ozone sensor will upload the monitored ozone concentration data to the controller again. If the ozone concentration is higher than 0.02ppm, the electrode plate discharge voltage will be switched to the first gear and the fan speed will be set to 1500-3000r / min. If it is lower than 0.02ppm, the electrode plate discharge voltage will be switched to the second gear and the fan speed will be set to 750-1500r / min; wherein, n≥1.

[0021] In some other embodiments of the present invention, the positive and negative voltage difference of the first level of the electrode plate voltage is -500 to -1500 V. The positive and negative voltage difference of the second level of the electrode plate voltage is -1500 to -3000 V.

[0022] The beneficial effects of the present invention are as follows: the present invention guides air from the air inlet to the purification device according to the position of the air outlet of the refrigerator, sterilizes and removes odor through the adsorption plate, removes ozone through the deozonation plate, and finally sends out fresh air. At the same time, the ozone concentration in the air outlet of the purification device is monitored by the ozone sensor, and the discharge voltage of the electrode plate and the speed of the fan are controlled by the controller according to different thresholds of the ozone concentration to control the purification rate of the purification device. The present invention can maintain a fresh and safe storage environment in the refrigerator compartment, inhibit the growth of food microorganisms, and inhibit food corruption, thereby ensuring the health and hygiene of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the photoelectrocatalytic sterilization and odor removal device proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the purification device in the photoelectrocatalytic sterilization and odor removal device proposed in the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the light board in the photoelectric catalytic sterilization and deodorization device proposed by the present invention;

[0027] Figure 4This is a front view of the purification device in the photoelectrocatalytic sterilization and odor removal device proposed by the present invention;

[0028] Figure 5 This is a working diagram of the photoelectrocatalytic sterilization and odor removal device proposed by the present invention;

[0029] Figure 6 This is a circuit schematic diagram of the controller in the photoelectrocatalytic sterilization and odor removal device proposed in the present invention.

[0030] In the figure: 1-purification device, 11-electrode plate, 12-adsorption plate, 13-lamp board, 14-fan, 15-deozonation plate, 16-controller, 17-high-voltage package, 18-fan, 19-rotating shaft, 110-air inlet, 111-housing, 112-air outlet, 2-refrigerator, 3-ozone sensor. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Reference Figure 1-6 , a photoelectrocatalytic sterilization and deodorization device, comprising a purification device 1 and an ozone sensor 3;

[0034] The purification device 1 includes a shell 111 and an adsorption plate 12, the thickness of the adsorption plate 12 is between 5mm and 15mm, an air inlet 110 is opened on the first side of the shell 111, and an air outlet 112 is opened on the second side of the shell 111. Along the air inlet 110 toward the air outlet 112, the inside of the shell 111 is sequentially provided with an electrode plate 11, an adsorption plate 12, an ultraviolet component, a fan 18, and an ozone removal plate 15. The fan 18 is provided with a rotating shaft 19, and a fan 14 is provided on the rotating shaft 19. The ozone sensor 3 is used to detect the ozone concentration in the air discharged from the air outlet 112.

[0035] The surface of the adsorption plate 12 is coated with a first catalytic coating, and the material of the first catalytic coating is a photocatalyst and precious metal ions, which can extend the life of the catalyst and enhance the catalytic ability. The surface of the deozonation plate 15 is coated with a second catalytic coating, and the material of the second catalytic coating is Mn ions or Cu ions. The deozonation plate 15 contains Mn ions, Cu ions and other catalyst coatings that can eliminate ozone. Due to the superposition of energy, catalysis will produce certain negative ozone effects in the process of degrading VOCs and sterilizing. Therefore, the ozone is adsorbed and decomposed by the deozonation plate 15 to eliminate the negative corrosive effect of ozone on the materials of the refrigerator 2. The lamp board 13 is equipped with an ultraviolet lamp, the number of which is 1-9. The ultraviolet lamp in the lamp board 13 is composed of a combination of UVC270-285nm band or UVB365-385nm. The adsorption plate 12 irradiates the ultraviolet light on the lamp board 13 while applying pressure to the electrode plate 11 to avoid hole-electron recombination and improve the purification efficiency in the refrigerator 2. The purification device 1 also includes a controller 16 and a high-voltage package 17. The controller 16 and the high-voltage package 17 are both arranged in the shell 111. The controller 16 and the electrode plate 11, the fan 18, and the lamp 11 are connected to the housing 111. The plates 13 are all signal connected, the adsorption plate 12 and the deozonation plate 15 are both honeycomb structures, the electrode plate 11 structure is a metal mesh or a multi-pinpoint discharge shape, the material of the adsorption plate 12 is one of alumina ceramics, nickel foam, and carbon fiber, a refrigerator 2, a purification device 1 of the photoelectrocatalytic sterilization and odor removal device is arranged on the inner wall of the refrigerator 2 cold storage chamber, and the ozone sensor 3 of the photoelectrocatalytic sterilization and odor removal device is arranged on the side wall of the refrigerator 2 cold storage chamber. In order to avoid the negative effects of ozone, an ozone sensor 3 is installed on the side wall of the refrigerator 2 in the direction of the air outlet 112 to monitor the ozone content during the operation of the device to timely accelerate the elimination of ozone or accelerate the speed of the wind purification cycle.

[0036] The steps are as follows:

[0037] S1: When the purification device 1 is started, the voltage of the electrode plate 11 is modulated to one level, and the speed of the fan 18 is set to 1500-3000 r / min;

[0038] S2: The ozone sensor 3 starts to monitor the ozone concentration in the air discharged from the air outlet 112, and monitors whether the ozone concentration value increases within a preset time T1;

[0039] S3: If the ozone concentration value rises, the voltage of the electrode plate 11 remains unchanged, and the speed of the fan 18 is set to 750-1500r / min. Otherwise, the voltage of the electrode plate 11 is adjusted to the second gear, and the speed of the fan 18 is set to 1500-3000r / min.

[0040] S4: After the electrode plate 11 and the fan 18 are started, the purification device 1 operates normally, the voltage of the electrode plate 11 is set to the first gear and the speed of the fan 18 is set to 1500-3000r / min;

[0041] S5: After the purification device 1 runs for a preset time T2, the ozone sensor 3 monitors the ozone concentration data and uploads it to the controller 16. The controller 16 determines whether the ozone concentration is lower than 0.02ppm. If it is higher than 0.02ppm, the discharge voltage is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min.

[0042] S6: After the purification device 1 runs for the preset time n*T3, the ozone sensor 3 uploads the monitored ozone concentration data to the controller 16 again. If the ozone concentration is higher than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min; wherein, n≥1.

[0043] The first level of the voltage of the electrode plate 11 has a positive and negative voltage difference of -500 to -1500 V. The second level of the voltage of the electrode plate 11 has a positive and negative voltage difference of -1500 to -3000 V.

[0044] Embodiment 1:

[0045] S1: When the purification device 1 is started, the voltage of the electrode plate 11 is modulated to one level, and the speed of the fan 18 is set to 1500-3000 r / min;

[0046] S2: The ozone sensor 3 starts to monitor the ozone concentration in the air discharged from the air outlet 112, and monitors whether the ozone concentration value increases within a preset time of 30 seconds;

[0047] S3: If the ozone concentration value rises, the voltage of the electrode plate 11 remains unchanged, and the speed of the fan 18 is set to 750-1500r / min. Otherwise, the voltage of the electrode plate 11 is adjusted to the second gear, and the speed of the fan 18 is set to 1500-3000r / min.

[0048] S4: After the electrode plate 11 and the fan 18 are started, the purification device 1 operates normally, the voltage of the electrode plate 11 is set to the first gear and the speed of the fan 18 is set to 1500-3000r / min;

[0049] S5: After the purification device 1 runs for a preset time of 1 minute, the ozone sensor 3 monitors the ozone concentration data and uploads it to the controller 16. The controller 16 determines whether the ozone concentration is lower than 0.02ppm. If it is higher than 0.02ppm, the discharge voltage is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min.

[0050] S6: After the purification device 1 runs for the preset time n*3h, the ozone sensor 3 uploads the monitored ozone concentration data to the controller 16 again. If the ozone concentration is higher than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min; wherein, n≥1.

[0051] Embodiment 2:

[0052] S1: When the purification device 1 is started, the voltage of the electrode plate 11 is modulated to one level, and the speed of the fan 18 is set to 1500-3000 r / min;

[0053] S2: The ozone sensor 3 starts to monitor the ozone concentration in the air discharged from the air outlet 112, and monitors whether the ozone concentration value increases within a preset time of 300 seconds;

[0054] S3: If the ozone concentration value rises, the voltage of the electrode plate 11 remains unchanged, and the speed of the fan 18 is set to 750-1500r / min. Otherwise, the voltage of the electrode plate 11 is adjusted to the second gear, and the speed of the fan 18 is set to 1500-3000r / min.

[0055] S4: After the electrode plate 11 and the fan 18 are started, the purification device 1 operates normally, the voltage of the electrode plate 11 is set to the first gear and the speed of the fan 18 is set to 1500-3000r / min;

[0056] S5: After the purification device 1 runs for a preset time of 5 minutes, the ozone sensor 3 monitors the ozone concentration data and uploads it to the controller 16. The controller 16 determines whether the ozone concentration is lower than 0.02ppm. If it is higher than 0.02ppm, the discharge voltage is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min.

[0057] S6: After the purification device 1 runs for the preset time n*6h, the ozone sensor 3 uploads the monitored ozone concentration data to the controller 16 again. If the ozone concentration is higher than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min; wherein, n≥1.

[0058] Embodiment 3:

[0059] S1: When the purification device 1 is started, the voltage of the electrode plate 11 is modulated to one level, and the speed of the fan 18 is set to 1500-3000 r / min;

[0060] S2: The ozone sensor 3 starts to monitor the ozone concentration in the air discharged from the air outlet 112, and monitors whether the ozone concentration value increases within a preset time of 200 seconds;

[0061] S3: If the ozone concentration value rises, the voltage of the electrode plate 11 remains unchanged, and the speed of the fan 18 is set to 750-1500r / min. Otherwise, the voltage of the electrode plate 11 is adjusted to the second gear, and the speed of the fan 18 is set to 1500-3000r / min.

[0062] S4: After the electrode plate 11 and the fan 18 are started, the purification device 1 operates normally, the voltage of the electrode plate 11 is set to the first gear and the speed of the fan 18 is set to 1500-3000r / min;

[0063] S5: After the purification device 1 runs for a preset time of 3 minutes, the ozone sensor 3 monitors the ozone concentration data and uploads it to the controller 16. The controller 16 determines whether the ozone concentration is lower than 0.02ppm. If it is higher than 0.02ppm, the discharge voltage is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min.

[0064] S6: After the purification device 1 runs for the preset time n*5h, the ozone sensor 3 uploads the monitored ozone concentration data to the controller 16 again. If the ozone concentration is higher than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the first gear, and the speed of the fan 18 is set to 1500-3000r / min. If it is lower than 0.02ppm, the discharge voltage of the electrode plate 11 is switched to the second gear, and the speed of the fan 18 is set to 750-1500r / min; wherein, n≥1.

[0065] The present invention guides air from the air inlet 110 to the purification device 1 according to the air outlet position of the refrigerator 2, sterilizes and removes odor through the adsorption plate 12, removes ozone through the deozonation plate 15, and finally sends out fresh air. At the same time, the ozone concentration in the air outlet 112 of the purification device 1 is monitored by the ozone sensor 3, and the discharge voltage of the electrode plate 11 and the speed of the fan 18 are controlled by the controller 16 according to different thresholds of the ozone concentration to control the purification rate of the purification device 1. The present invention can maintain a fresh and safe storage environment in the two compartments of the refrigerator, inhibit the growth of food microorganisms, and inhibit food corruption, thereby ensuring the health and hygiene of consumers.

[0066] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A purification method for a photoelectrocatalytic sterilization and deodorization device, Features: The photoelectric catalytic sterilization and odor removal device includes a purification device and an ozone sensor; The purification device comprises a shell and an adsorption plate, an air inlet is provided on a first side of the shell, an air outlet is provided on a second side of the shell, and an electrode plate, an adsorption plate, an ultraviolet component, a fan, and an ozone removal plate are sequentially provided inside the shell along the air inlet toward the air outlet, and the ozone sensor is used to detect the ozone concentration in the air discharged from the air outlet; The purification method steps of the photoelectrocatalytic sterilization and odor removal device are as follows: S1: When starting the purification device, the electrode plate voltage is modulated to the first gear, and the fan speed is set to 1500-3000r / min; S2: The ozone sensor starts to monitor the ozone concentration in the air discharged from the air outlet, and monitors whether the ozone concentration value increases within the preset time T1; S3: If the ozone concentration value rises, the electrode plate voltage remains unchanged and the fan speed is set to 750-1500r / min. Otherwise, the electrode plate voltage is adjusted to the second gear and the fan speed is set to 1500-3000r / min. S4: After the electrode plate and the fan are started, the purification device operates normally, the electrode plate voltage is set to the first gear and the fan speed is set to 1500-3000r / min; S5: After the purification device runs for the preset time T2, the ozone sensor monitors the ozone concentration data and uploads it to the controller. The controller determines whether the ozone concentration is lower than 0.02ppm. If it is higher than 0.02ppm, the discharge voltage is switched to the first gear and the fan speed is set to 1500-3000r / min. If it is lower than 0.02ppm, the electrode plate discharge voltage is switched to the second gear and the fan speed is set to 750-1500r / min. S6: After the purification device runs for the preset time n*T3, the ozone sensor will upload the monitored ozone concentration data to the controller again. If the ozone concentration is higher than 0.02ppm, the electrode plate discharge voltage will be switched to the first gear and the fan speed will be set to 1500-3000r / min. If it is lower than 0.02ppm, the electrode plate discharge voltage will be switched to the second gear and the fan speed will be set to 750-1500r / min; wherein, n≥1.

2. The purification method of the photoelectrocatalytic sterilization and odor purification device according to claim 1, Features: The surface of the adsorption plate is coated with a first catalytic coating, the material of which is a photocatalyst and precious metal ions. The surface of the deozonation plate is coated with a second catalytic coating, the material of which is Mn ions or Cu ions.

3. The purification method of the photoelectrocatalytic sterilization and odor purification device according to claim 2, Features: The ultraviolet component includes a lamp board and ultraviolet lamps installed on the lamp board, and the number of the ultraviolet lamps is 1-9.

4. The purification method of the photoelectrocatalytic sterilization and odor purification device according to claim 3, Features: The purification device also includes a controller and a high-voltage package, both of which are arranged in the shell, and the controller is signal-connected with the electrode plate, the fan, and the lamp board.

5. The purification method of the photoelectrocatalytic sterilization and odor purification device according to claim 1, Features: The adsorption plate and the deozonation plate are both honeycomb structures.

6. The purification method of the photoelectrocatalytic sterilization and odor purification device according to claim 1, Features: The electrode plate structure is in the shape of a metal mesh or a multi-needle tip discharge shape.

7. The purification method of the photoelectrocatalytic sterilization and odor purification device according to claim 1, Features: The material of the adsorption plate is one of alumina ceramics, nickel foam and carbon fiber.

8. The purification method of the photoelectrocatalytic sterilization and odor purification device according to claim 1, Features: The first level of the electrode plate voltage has a positive and negative voltage difference of -500 to -1500V, and the second level of the electrode plate voltage has a positive and negative voltage difference of -1500 to -3000V.

9. A refrigerator, Features: It comprises a photoelectrocatalytic sterilization and odor purification device, the purification device of which is arranged on the inner wall of the refrigerator compartment, the ozone sensor of which is arranged on the side wall of the refrigerator compartment, and the photoelectrocatalytic sterilization and odor purification device adopts the purification method described in any one of claims 1-8.

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