Negative ion generating device

Abstract

The utility model discloses a kind of negative ion generating device, it is related to air conditioning equipment technical field, wherein, negative ion generating device includes: box body component, is equipped with receiving cavity and gas outlet, gas outlet is connected receiving cavity and external environment;Photocatalyst component is fixed in receiving cavity;Ultraviolet light source is located in the side of photocatalyst component and the direction of illumination is towards photocatalyst component, to produce the ultraviolet light of irradiation to photocatalyst component;And water spraying component, it is located in receiving cavity, for water in receiving cavity is handled as water flow, and water flow is sprayed to photocatalyst component;Wherein, water flow is sprayed on photocatalyst component by the irradiation of ultraviolet and generates negative ion gas, negative ion gas enters external environment by gas outlet.The utility model provides technical scheme, improves the safety of negative ion generating device and the concentration of generating negative ion gas.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, and in particular to a negative ion generating device. Background Technology

[0002] Nowadays, people are paying more and more attention to indoor air quality and healthy living. Negative ion generators not only purify the air, but also increase blood oxygen levels and relieve fatigue, making them widely used in homes, offices, medical aids and other scenarios.

[0003] There is a negative ion generating device that uses ionization to generate negative ions. Its working principle is to set a high-voltage electrode inside the device and use the strong electric field between the electrodes to ionize the surrounding air, converting air molecules (such as oxygen molecules) into negative ions, and then releasing the negative ions into the environment through a structure such as a fan.

[0004] However, during high-voltage ionization, oxygen in the air is easily over-oxidized to produce ozone. As a strong oxidizing gas, ozone can cause strong irritation to the respiratory mucosa when its concentration in the environment exceeds a certain level, leading to symptoms such as coughing and chest tightness, posing a safety risk. Utility Model Content

[0005] The main purpose of this invention is to propose a negative ion generating device, which aims to improve the safety of the negative ion generating device and increase the concentration of the generated negative ion gas.

[0006] To achieve the above objectives, the negative ion generating device proposed in this utility model includes: The housing assembly is provided with a receiving cavity and an air outlet, the air outlet being connected to the receiving cavity and the external environment; The photocatalyst assembly is fixed inside the receiving cavity; An ultraviolet light source is disposed on one side of the photocatalyst assembly and its irradiation direction is towards the photocatalyst assembly to generate ultraviolet light that irradiates the photocatalyst assembly; and A water spraying component is disposed within the receiving cavity and is used to process the water in the receiving cavity into a water stream and spray the water stream onto the photocatalyst component. In this process, water flowing on the photocatalyst component generates negative ion gas through ultraviolet irradiation, and the negative ion gas enters the external environment through the gas outlet.

[0007] In one embodiment, the water spray assembly is disposed below the photocatalyst assembly, and the ultraviolet light source is disposed above the photocatalyst assembly.

[0008] In one embodiment, the housing assembly further includes a water inlet communicating with the receiving cavity to inject water into the receiving cavity through the water inlet; and / or, The housing assembly is also provided with an air inlet communicating with the receiving cavity, so as to introduce gas into the receiving cavity through the air inlet.

[0009] In one embodiment, the housing assembly is provided with a plurality of air outlets.

[0010] In one embodiment, the negative ion generating device further includes a liquid level detection component disposed within the receiving cavity, which is used to detect the liquid level height within the receiving cavity.

[0011] In one embodiment, the liquid level detection assembly includes a first liquid level gauge located near the bottom wall of the receiving cavity; and / or, The liquid level detection component includes a second liquid level gauge, which is disposed between the photocatalyst component and the water spray component.

[0012] In one embodiment, the negative ion generating device further includes a filter component disposed on the side of the photocatalyst component facing the air outlet, so that the negative ion gas passes through the filter component and enters the external environment through the air outlet.

[0013] In one embodiment, the filtering assembly includes a filter screen disposed within the air outlet.

[0014] In one embodiment, the filter assembly further includes a filter plate having filter holes disposed between the air outlet and the photocatalyst assembly, with at least two holes spaced apart.

[0015] In one embodiment, the photocatalyst assembly includes a plurality of photocatalyst plates, each photocatalyst plate extending along the height direction of the housing assembly, and the plurality of photocatalyst plates being arranged at intervals along the length direction of the housing assembly; and / or, The water spray assembly includes a plurality of nozzles for spraying water; wherein the plurality of nozzles are spaced apart along the length direction of the photocatalyst assembly; and / or, the plurality of nozzles are spaced apart along the width direction of the photocatalyst assembly.

[0016] The negative ion generating device of this utility model includes a housing assembly, a photocatalyst assembly, an ultraviolet light source, and a water spray assembly. The housing assembly has a receiving cavity and an outlet. The receiving cavity is used to hold water, the photocatalyst assembly, the ultraviolet light source, and the water spray assembly, preventing external dust and airflow from interfering with the photocatalytic reaction process. The photocatalyst assembly has photocatalyst material on its surface, serving as a carrier for the photocatalytic reaction. The water spray assembly treats the water in the receiving cavity into a high-speed water flow and sprays it onto the surface of the photocatalyst assembly, ensuring sufficient contact between the water and the photocatalyst. The ultraviolet light source is located on one side of the photocatalyst assembly, with its irradiation direction facing the photocatalyst assembly, ensuring that the ultraviolet light generated by the light source covers the surface of the photocatalyst assembly. Under the irradiation of ultraviolet light, the photocatalyst material in the photocatalyst assembly undergoes a photocatalytic reaction with water and oxygen in the water vapor, generating gas containing negative ions. The negative ion gas generated by the negative ion generating device not only helps reduce dust in the environment but also helps increase the oxygen content in the human blood, refreshes the mind, and promotes human metabolism. Compared to existing technologies that use ionization to generate negative ions, this device uses ultraviolet light to irradiate the photocatalytic component, causing a photocatalytic reaction that generates negative ions. This process does not produce ozone, thus improving the safety of the generated negative ion gas. Furthermore, the water spray component processes water into a stream and sprays it onto the photocatalytic component, increasing the contact area between the water, air, and the photocatalytic component, which helps to increase the amount of negative ion gas generated. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a partial embodiment of the negative ion generating device provided by this utility model. Figure 1 ; Figure 2 A schematic diagram of a structure of an embodiment of the negative ion generating device provided by this utility model; Figure 3 A schematic diagram of the structure of a partial embodiment of the negative ion generating device provided by this utility model. Figure 2 ; Figure 4 A schematic diagram of the structure of a partial embodiment of the negative ion generating device provided by this utility model. Figure 3 .

[0019] Explanation of icon numbers: 100. Housing assembly; 101. Air outlet; 102. Water inlet; 103. Air inlet; 104. Drain outlet; 200. Photocatalyst components; 300. Ultraviolet light source; 400. Water spray assembly; 410. Nozzle; 420. Water supply pipeline; 500. Liquid level detection assembly; 510. First liquid level gauge; 520. Second liquid level gauge; 600. Filter assembly; 610. Filter screen; 620. Filter plate.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] This invention proposes a negative ion generating device.

[0026] Please see Figures 1 to 2 , Figure 1 A schematic diagram of the structure of a partial embodiment of the negative ion generating device provided by this utility model. Figure 1 , Figure 2 A schematic diagram of an embodiment of the negative ion generating device provided by this utility model.

[0027] In one embodiment of this utility model, the negative ion generating device includes: The enclosure assembly 100 is provided with a receiving cavity and an air outlet 101, the air outlet 101 connecting the receiving cavity to the external environment; The photocatalyst assembly 200 is fixed inside the receiving cavity; An ultraviolet light source 300 is disposed on one side of the photocatalyst assembly 200 and its irradiation direction is towards the photocatalyst assembly 200, so as to generate ultraviolet light that irradiates the photocatalyst assembly 200; and A water spraying component 400 is disposed in the receiving cavity and is used to process the water in the receiving cavity into a water stream and spray the water stream onto the photocatalyst component 200. In this process, water flows onto the photocatalyst component 200 and generates negative ion gas through ultraviolet radiation. The negative ion gas then enters the external environment through the gas outlet 101.

[0028] The negative ion generating device of this utility model includes a housing assembly 100, a photocatalyst assembly 200, an ultraviolet light source 300, and a water spray assembly 400. The housing assembly 100 has a receiving cavity and an outlet 101. The receiving cavity is used to contain water, the photocatalyst assembly 200, the ultraviolet light source 300, and the water spray assembly 400, preventing external dust, airflow, etc., from interfering with the photocatalytic reaction process. The photocatalyst assembly 200 has photocatalyst material on its surface, serving as a carrier for the photocatalytic reaction. The water spray assembly 400 treats the water in the receiving cavity into a circulating water flow and sprays the water flow onto the surface of the photocatalyst assembly 200, ensuring sufficient contact between the water flow and the photocatalyst. The ultraviolet light source 300 is located on one side of the photocatalyst assembly 200, with its irradiation direction facing the photocatalyst assembly 200, ensuring that the ultraviolet light generated by the light source covers the surface of the photocatalyst assembly 200. Under the irradiation of ultraviolet light, the photocatalyst material in the photocatalyst assembly 200 undergoes a photocatalytic reaction with water and oxygen in the water flow, generating negative ion gas. The negative ion generator not only reduces dust in the environment but also increases blood oxygen levels, refreshes the mind, and promotes metabolism. Compared to existing technologies that use ionization to generate negative ions, this device uses ultraviolet light to irradiate the photocatalytic component 200, causing a photocatalytic reaction that generates negative ions without producing ozone, thus improving the safety of the generated negative ion gas. Furthermore, the water spray component 400 treats water and sprays it onto the photocatalytic component 200, increasing the contact area between water, air, and the photocatalytic component 200, which helps to increase the amount of negative ions generated, thereby increasing the concentration of the generated negative ion gas.

[0029] The photocatalyst component 200 has a photocatalyst material on its surface or is made entirely of a photocatalyst material. The photocatalyst material can be titanium dioxide, zinc oxide, or zirconium dioxide, etc.

[0030] The specific working principle of this negative ion generating device is as follows: The water spray component 400 first processes the liquid water in the containment cavity into a water flow, and then sprays the water flow onto the surface of the photocatalyst component 200. At the same time, the ultraviolet light source 300 irradiates the photocatalyst component 200 with ultraviolet light, and the energy of the ultraviolet light is absorbed by the photocatalyst material on the surface of the photocatalyst component 200. When the ultraviolet energy absorbed by the photocatalyst reaches the threshold corresponding to its band gap width, it will excite the electron transition inside the photocatalyst, that is, the valence band electrons absorb energy and jump to the conduction band, forming conduction band free electrons, while leaving holes in the valence band. The conduction band free electrons and valence band holes will respectively undergo redox reactions with the water flow on the surface of the photocatalyst. The valence band holes will capture electrons of water molecules in the water flow, oxidizing and decomposing water molecules into hydroxyl radicals and hydrogen ions; the conduction band free electrons tend to combine with dissolved oxygen in the water flow, reducing oxygen into superoxide anion radicals. The negatively charged ions then mix with the air to form negative ion gas, which finally enters the external environment through the air outlet 101 of the housing component 100, completing the entire process of generating negative ion gas.

[0031] In this process, the water flow impacts and sprays onto the surface of the photocatalyst component 200, mimicking the generation of negative ion gas from water flow in the natural environment. On one hand, it provides water as a reactant, a core reactant for negative ion generation. Holes, with their strong oxidizing properties, can capture electrons from water molecules, oxidizing the water to generate hydrogen ions and highly reactive hydroxyl radicals. Simultaneously, the high-energy electrons excited to the conduction band have strong reducing properties, combining with oxygen in the air to form superoxide anion radicals, a major type of negative ion. On the other hand, the impact of the water flow continuously washes the surface of the photocatalyst component 200, carrying away reaction byproducts and any dust or contaminants that may be adhering to it, keeping the surface of the photocatalyst component 200 clean. This promotes efficient reaction activity and prevents the photocatalyst component 200 from deactivating.

[0032] In one embodiment, the water spray assembly 400 is disposed on the lower side of the photocatalyst assembly 200, and the ultraviolet light source 300 is disposed on the upper side of the photocatalyst assembly 200.

[0033] Reference Figure 1 and Figure 3In this embodiment of the invention, the ultraviolet light source 300 is positioned above the photocatalyst assembly 200, and the water spray assembly 400 is positioned below the photocatalyst assembly 200. When the lower-side spray assembly 400 sprays water onto the upper-side photocatalyst assembly 200, the upward kinetic energy of the water flow is opposite to gravity, which helps to prolong the residence time of the water flow on the surface of the photocatalyst assembly 200 and avoids insufficient contact caused by rapid dripping. In addition, the falling water flow naturally flows back to the vicinity of the lower water spray assembly 400 and is sprayed upward again by the water spray assembly 400, which is beneficial for water recycling and reduces water waste. The ultraviolet light source 300 positioned above is relatively far from the water flow sprayed by the lower-side water spray assembly 400, which can reduce problems such as moisture absorption, short circuit, or light refraction interference caused by direct contact between the water flow and the ultraviolet light source 300, thus extending the service life of the ultraviolet light source 300 and ensuring the stability of the irradiation intensity. On the other hand, the vertical layered layout of fixing the water spray component 400 at the bottom, the photocatalyst component 200 in the middle, and the ultraviolet light source 300 at the top allows for clear spatial positioning of each component's installation location. This eliminates the need for complex brackets or avoidance structures, enabling orderly assembly of each part and improving assembly efficiency.

[0034] In one embodiment, the housing assembly 100 further includes a water inlet 102 communicating with the receiving cavity to inject water into the receiving cavity; and / or, The housing assembly 100 is also provided with an air inlet 103 communicating with the receiving cavity, so as to introduce gas into the receiving cavity through the air inlet 103.

[0035] Reference Figure 2 In this embodiment of the invention, the housing assembly 100 is further provided with a water inlet 102, allowing external water to flow into the receiving cavity through the water inlet 102 to supply water to the water spray assembly 400. When the water in the receiving cavity is depleted, the water spray assembly 400 can no longer generate water, and the negative ion generation function of the device will also stop. The water inlet 102 facilitates the user to replenish water to the receiving cavity during device operation or when water is insufficient, ensuring that the water spray assembly 400 always has enough water to process, thereby enabling the photocatalytic reaction to continue, extending the continuous operating time of the device, and avoiding the inconvenience of frequent shutdowns for water replenishment. In addition, the water inlet 102 can be equipped with a plug, water pipe connector, etc., to ensure a certain degree of sealing or ease of connection.

[0036] Reference Figure 2In this embodiment of the invention, the housing assembly 100 is further provided with an air inlet 103, allowing external gas to enter the containment cavity through the air inlet 103, forming an in-and-out gas circulation path with the air outlet 101. The air inlet 103 is responsible for inputting gas to replenish the containment cavity, while the air outlet 101 is responsible for outputting negative ion gas. Replenishing gas through the air inlet 103 can, on the one hand, promote the more even diffusion of the water flow generated by the water spray assembly 400 onto the surface of the photocatalyst assembly 200; on the other hand, it can drive the generated negative ion gas to leave quickly from the air outlet 101, reducing its retention in the containment cavity and improving the negative ion gas output efficiency; furthermore, it can replenish a certain amount of oxygen in the containment cavity, providing sufficient reactants for the photocatalytic reaction and improving the negative ion gas generation efficiency. Specifically, in this embodiment, high-pressure gas higher than atmospheric pressure is introduced into the containment cavity through the air inlet 103, which increases the gas pressure in the containment cavity and further improves the efficiency of the negative ion gas leaving the air outlet 101, and also enables the negative ion gas to diffuse to a farther range after leaving the air outlet 101.

[0037] Reference Figure 3 In this embodiment of the utility model, the housing assembly 100 is also provided with a drain outlet 104. The drain outlet 104 is located at the bottom of the housing assembly 100. When the device is not in use, the water in the receiving cavity can be drained through the drain outlet 104, which not only reduces the overall weight and makes it easier to move the device, but also prevents water from corroding the components in the receiving cavity when the device is not used for a long time, thus helping to extend the service life of the negative ion generating device.

[0038] In one embodiment, the housing assembly 100 is provided with a plurality of air outlets 101.

[0039] Reference Figure 2 In this embodiment of the invention, the housing assembly 100 is provided with multiple air outlets 101, which further improves the air output efficiency of the negative ion gas. Specifically, in this embodiment, three air outlets 101 are arranged at intervals along the length of the housing assembly 100.

[0040] In one embodiment, the negative ion generating device further includes a liquid level detection component 500, which is disposed in the receiving cavity and is used to detect the liquid level height in the receiving cavity.

[0041] Reference Figure 1In this embodiment of the invention, the negative ion generating device further includes a liquid level detection component 500, used to detect the water level in the containment cavity and provide feedback on the current water volume status (such as sufficient water, insufficient water, or excessive water). When the detected liquid level is lower than a preset threshold (such as a water level that meets the minimum water supply requirements of the spray component 400), the user can be prompted to add water through the inlet 102 (such as through an indicator light, alarm device, etc.); if the detected liquid level is higher than a preset upper limit (such as a water level that may submerge the photocatalyst component 200), the user can be prompted to stop adding water to avoid excessive water volume. By setting the liquid level detection component 500, the user can easily know the water level in the housing component 100, avoiding damage to the spray component 400 by running it dry and extending the service life of the spray component 400. On the other hand, the user does not need to open the housing component 100 to observe or judge whether water needs to be added based on experience, thus improving the ease of use of the negative ion generating device.

[0042] In one embodiment, the liquid level detection assembly 500 includes a first liquid level gauge 510, the first liquid level gauge 510 being located near the bottom wall of the receiving cavity; and / or, The liquid level detection component 500 includes a second liquid level gauge 520, which is located between the photocatalyst component 200 and the water spray component 400.

[0043] Combination Figure 1 and Figure 3 In an embodiment of this utility model, the liquid level detection component 500 includes a first liquid level gauge 510. The first liquid level gauge 510 is close to the bottom wall of the receiving cavity and monitors the lowest safe water level in the receiving cavity, that is, the critical water level at which the water spray component 400 can normally draw water. When the liquid level drops to the detection position of the first liquid level gauge 510 or even below, it means that the water spray component 400 will not be able to draw enough water and needs to be replenished through the water inlet 102.

[0044] Combination Figure 1 and Figure 3 In this embodiment of the invention, the liquid level detection component 500 includes a second liquid level gauge 520, which is located between the photocatalyst component 200 and the water spray component 400 to monitor the maximum safe water level in the containment cavity, thus preventing excessive water flow. When the liquid level rises to the detection position of the second liquid level gauge 520, it means that the water flow has reached the safe upper limit, and water injection must be stopped to avoid interference or damage to the photocatalyst component 200 and the ultraviolet light source 300.

[0045] Combination Figure 1 and Figure 3Specifically, in this embodiment, the liquid level detection component 500 includes both a first liquid level gauge 510 and a second liquid level gauge 520. The first liquid level gauge 510 monitors the lower limit of the water level to ensure that the water spray component 400 always has a water source available. The second liquid level gauge 520 monitors the upper limit of the water level to prevent excessive water flow. This facilitates maintaining the water level in the containment cavity above the first liquid level gauge 510 and below the second liquid level gauge 520, enabling the water spray component 400 to stably extract water to generate a water flow. This prevents the water spray component 400 from running dry due to lack of water, and also prevents the photocatalytic component 200 from being submerged in liquid water. This ensures that the photocatalytic component 200 can fully contact the water flow, air, and ultraviolet light, thus ensuring the efficiency of the photocatalytic reaction.

[0046] In one embodiment, the negative ion generating device further includes a filter assembly 600, which is disposed on the side of the photocatalyst assembly 200 facing the outlet 101, so that the negative ion gas passes through the filter assembly 600 and the outlet 101 in sequence and enters the external environment.

[0047] Combination Figure 1 and Figure 4 In this embodiment of the invention, a filter assembly 600 is also provided on the side of the photocatalyst assembly 200 facing the air outlet 101. This allows the generated negative ion gas to be filtered before entering the external environment from the air outlet 101, reducing trace byproducts in the negative ion gas, such as tiny particles worn off from the surface of the photocatalyst assembly 200 due to wear, fine water droplets formed by the condensation of incompletely reacted water, and residual dust in the containment cavity. By setting the filter assembly 600, impurities are intercepted before the negative ion gas is discharged, preventing impurities from diffusing into the external environment, improving the purity of the output negative ion gas, thereby improving the air purification effect of the output negative ion gas, and also improving the safety and comfort of the user when using this device.

[0048] In one embodiment, the filter assembly 600 includes a filter screen 610 disposed within the air outlet 101.

[0049] Combination Figure 1 and Figure 4 In this embodiment of the invention, the filter assembly 600 includes a filter screen 610, which can be a woven mesh, a porous membrane, or other structural form. It is disposed within the air outlet 101 to block impurity particles larger than the pore size in the negative ion gas, ensuring that all negative ion gas entering the external environment from the containment cavity passes through the filter screen 610, thus guaranteeing the effectiveness of filtration. Specifically, in this embodiment, the filter screen 610 is mounted on a mounting bracket, which is embedded within the air outlet 101, resulting in a simple structure and convenient assembly.

[0050] In one embodiment, the filter assembly 600 further includes a filter plate 620, which has filter holes and is disposed between the air outlet 101 and the photocatalyst assembly 200, with at least two holes spaced apart.

[0051] Combination Figure 3 and Figure 4 In an embodiment of this utility model, the filter assembly 600 further includes a filter plate 620, which has filter holes (not shown in the figure). The filter plate 620 is arranged on the path of the negative ion gas generated by the photocatalyst assembly 200 moving towards the outlet 101, and at least two filter plates 620 are arranged in a front-to-back spatial arrangement on this path to form a multi-stage filtration from the photocatalyst assembly 200 to the outlet 101. Specifically, the negative ion gas generated on the surface of the photocatalyst component 200 first comes into contact with the first filter plate 620 near the photocatalyst component 200. Through the physical interception effect of the filter holes, impurities larger than the pore size are blocked, thus initially purifying the negative ion gas. After passing through the first filter plate 620, the negative ion gas enters between the first and second filter plates 620. The airflow is briefly buffered here, and the small impurities that were not intercepted are more likely to settle due to the reduced airflow speed or flow with the airflow to the second filter plate 620. The pore size of the filter plate 620 can be the same as or smaller than that of the first filter plate 620. The second filter plate 620 further intercepts the remaining impurities, achieving secondary filtration. After being purified by at least two filter plates 620, the negative ion gas finally flows to the filter screen 610 in the gas outlet 101. The filter screen 610 performs a final interception of the remaining tiny impurities, forming a multi-stage filtration, which further improves the purity of the output negative ion gas and the safety of the device during use.

[0052] In one embodiment, the photocatalyst assembly 200 includes a plurality of photocatalyst plates (not shown in the figure), each photocatalyst plate extending along the height direction of the housing assembly 100, and the plurality of photocatalyst plates being spaced apart along the length direction of the housing assembly 100; and / or, The water spray assembly 400 includes a plurality of nozzles 410 for spraying water; wherein the plurality of nozzles 410 are spaced apart along the length direction of the photocatalyst assembly 200; and / or, the plurality of nozzles 410 are spaced apart along the width direction of the photocatalyst assembly 200.

[0053] In this embodiment of the invention, the photocatalytic assembly 200 includes multiple photocatalytic plates. Each photocatalytic plate extends along the height of the housing assembly 100, from near the water spray assembly 400 upwards to near the ultraviolet light source 300. The multiple photocatalytic plates are spaced apart along the length of the housing assembly 100, allowing the water flow generated by the water spray assembly 400 to flow through the gaps between the plates. The water flow can contact both sides of each plate, and the light from the ultraviolet light source 300 can also penetrate the gaps between the plates, illuminating both sides of each plate. This increases the area where the photocatalytic reaction can occur. A larger reaction area means that more water can contact the plate simultaneously and receive ultraviolet irradiation, improving the generation efficiency of negative ion gas. Furthermore, the photocatalytic plates may degrade in performance after long-term use; however, the degraded photocatalytic plates can be replaced individually without requiring a complete replacement, reducing maintenance costs.

[0054] Combination Figure 1 and Figure 3 In this embodiment of the invention, the water spray assembly 400 includes multiple nozzles 410. The nozzles 410 convert water into a water flow and spray it out. By setting multiple nozzles 410, the coverage area of ​​the sprayed water flow is expanded, ensuring that different areas of the photocatalyst assembly 200 can come into contact with the water flow. The multiple nozzles 410 can be arranged at intervals along the length of the photocatalyst assembly 200, so that the water flow sprayed from the nozzles 410 can cover multiple photocatalyst plates and the gaps between adjacent photocatalyst plates. The multiple nozzles 410 can also be arranged at intervals along the width of the photocatalyst assembly 200, ensuring that the water flow covers the left and right edges of the photocatalyst plates and that the gas on the photocatalyst plates is uniform in the width direction. Specifically, in this embodiment, the water spray assembly 400 includes a water pump (not shown in the figure), a water supply pipeline 420, and a nozzle 410. The nozzle 410 is disposed on the water supply pipeline 420, and the water pump is disposed at the bottom of the receiving cavity, which is responsible for providing power for the water supply and transporting the water in the receiving cavity to the water supply pipeline 420. The water is dispersed into a high-speed water flow by utilizing the structural design of the nozzle 410 (such as small aperture, vortex channel, etc.).

[0055] Reference Figure 1 In an embodiment of this utility model, two sets of photocatalytic components 200 are provided in the receiving cavity. The two sets of photocatalytic components 200 are arranged at intervals along the length direction of the housing assembly 100. An ultraviolet light source 300 is provided above each of the two sets of photocatalytic components 200. A water supply pipe 420 and a nozzle 410 are provided below each of the two sets of photocatalytic components 200. The two sets of water supply pipes 420 and nozzles 410 share the same water pump. A filter plate 620 covers the two sets of photocatalytic components 200 along the length direction of the housing assembly 100.

[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A negative ion generating device, characterized in that, include: The housing assembly is provided with a receiving cavity and an air outlet, the air outlet being connected to the receiving cavity and the external environment; The photocatalyst assembly is fixed inside the receiving cavity; An ultraviolet light source is disposed on one side of the photocatalyst assembly and the irradiation direction is towards the photocatalyst assembly to generate ultraviolet light that irradiates the photocatalyst assembly; as well as A water spraying component is disposed within the receiving cavity and is used to process the water in the receiving cavity into a water stream and spray the water stream onto the photocatalyst component. In this process, water flowing on the photocatalyst component generates negative ion gas through ultraviolet irradiation, and the negative ion gas enters the external environment through the gas outlet.

2. The negative ion generating device as described in claim 1, characterized in that, The water spray component is located on the lower side of the photocatalyst component, and the ultraviolet light source is located on the upper side of the photocatalyst component.

3. The negative ion generating device as described in claim 1, characterized in that, The housing assembly also includes a water inlet communicating with the receiving cavity to inject water into the receiving cavity; and / or, The housing assembly is also provided with an air inlet communicating with the receiving cavity, so as to introduce gas into the receiving cavity through the air inlet.

4. The negative ion generating device as described in claim 1, characterized in that, The housing assembly is provided with multiple air outlets.

5. The negative ion generating device as described in claim 1, characterized in that, The negative ion generating device also includes a liquid level detection component, which is disposed inside the receiving cavity and is used to detect the liquid level height inside the receiving cavity.

6. The negative ion generating device as described in claim 5, characterized in that, The liquid level detection assembly includes a first liquid level gauge, which is located near the bottom wall of the receiving cavity; and / or, The liquid level detection component includes a second liquid level gauge, which is disposed between the photocatalyst component and the water spray component.

7. The negative ion generating device as described in claim 1, characterized in that, The negative ion generating device also includes a filter component, which is located on the side of the photocatalyst component facing the air outlet, so that the negative ion gas is filtered by the filter component and then enters the external environment through the air outlet.

8. The negative ion generating device as described in claim 7, characterized in that, The filter assembly includes a filter screen, which is disposed inside the air outlet.

9. The negative ion generating device as described in claim 8, characterized in that, The filter assembly also includes a filter plate, which has filter holes located between the air outlet and the photocatalyst assembly, with at least two holes spaced apart.

10. The negative ion generating device as described in claim 1, characterized in that, The photocatalyst assembly includes multiple photocatalyst plates, each photocatalyst plate extending along the height direction of the housing assembly, and the multiple photocatalyst plates arranged at intervals along the length direction of the housing assembly; and / or The water spray assembly includes a plurality of nozzles for spraying water; wherein the plurality of nozzles are spaced apart along the length direction of the photocatalyst assembly; and / or, the plurality of nozzles are spaced apart along the width direction of the photocatalyst assembly.

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