A purification device, purification method, cleaning method, and air conditioner

Abstract

The application discloses a purification device, a purification method, a cleaning method and an air conditioner, and belongs to the technical field of air purification equipment, to solve the technical problem of low purification efficiency of the current air purification equipment. The purification device comprises a liquid storage tank and a membrane tube. The liquid storage tank stores absorption liquid. The membrane tube has a liquid inlet end and a liquid outlet end. The liquid inlet end is communicated with the liquid storage tank, so that the absorption liquid in the liquid storage tank can be input into the membrane tube. The membrane tube is provided with membrane holes on the surface. By adjusting the liquid pressure of the absorption liquid input into the membrane tube, the purification device has a first state. In the first state, the liquid pressure of the absorption liquid in the membrane tube is not greater than the resultant force of the air pressure outside the membrane tube and the transmembrane resistance of the membrane tube. During the process of flowing through the membrane tube, the pollutants in the air outside the membrane tube enter the membrane tube through the membrane holes and are absorbed by the absorption liquid in the membrane tube, so that the absorption liquid in the membrane tube can be prevented from overflowing after absorbing the pollutants in the air, and secondary pollution is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air purification equipment, and particularly relates to a purification device, a purification method, a cleaning method and an air conditioner. BACKGROUND

[0002] The air purification equipment can be used for filtering and purifying pollutants and harmful substances in the air to achieve the purpose of improving indoor and outdoor air quality.

[0003] In the related art, the air filtration equipment uses a filter screen structure or sprays a filter liquid to form a water curtain to purify the air. Such an air purification method has the problems of small contact area between the filter screen and the air and small contact surface between the water curtain and the air, resulting in low purification efficiency. SUMMARY

[0004] The present application aims to at least solve the technical problem of low purification efficiency of the current air purification equipment to some extent. To this end, the present application provides a purification device, a purification method, a cleaning method and an air conditioner.

[0005] In a first aspect, the present application provides a purification device, comprising:

[0006] a liquid storage tank storing an absorption liquid; and

[0007] a membrane tube having an inlet end and an outlet end, the inlet end being in communication with the liquid storage tank so that the absorption liquid in the liquid storage tank can be input into the membrane tube, and the membrane tube surface being provided with membrane holes;

[0008] wherein by adjusting the liquid pressure of the absorption liquid input into the membrane tube, the purification device has a first state, in which the liquid pressure of the absorption liquid in the membrane tube is not greater than the resultant force of the gas pressure outside the membrane tube and the transmembrane resistance of the membrane tube, so that the pollutants in the gas outside the membrane tube can be absorbed by the absorption liquid in the membrane tube through the membrane holes.

[0009] In the purification device provided by the present application, the liquid storage tank can be used to store the absorption liquid, the liquid storage tank is connected with the inlet end of the membrane tube, the absorption liquid in the liquid storage tank can be input into the membrane tube through the inlet end of the membrane tube and discharged through the outlet end of the membrane tube, so that the absorption liquid can flow in the membrane tube to form a flow. By making the liquid pressure of the absorption liquid in the membrane tube not greater than the resultant force of the gas pressure outside the membrane tube and the transmembrane resistance of the membrane tube, the pollutants in the gas outside the membrane tube can be sucked into the membrane tube through the membrane holes of the membrane tube and absorbed by the absorption liquid in the membrane tube, so as to achieve the purpose of purifying the air outside the membrane tube. During the flow of the absorption liquid in the membrane tube, only the pollutants in the air outside the membrane tube enter the membrane tube through the membrane holes and are absorbed by the absorption liquid in the membrane tube, so as to prevent the absorption liquid in the membrane tube from overflowing after absorbing the pollutants in the air and to avoid secondary pollution.

[0010] In some embodiments, the purification device further has a second state in which the liquid pressure of the absorbent liquid in the membrane tube is greater than the resultant of the air pressure outside the membrane tube and the transmembrane resistance of the membrane tube, by adjusting the liquid pressure of the absorbent liquid input into the membrane tube. The purification device can switch between the first state and the second state.

[0011] In the second state, the purification device of the present application also has the function of humidifying air.

[0012] In some embodiments, in the first state, the absorbent liquid comprises at least one of a 0-10% hydrogen peroxide solution, a 0-1% hypochlorous acid solution, a 0.1-3% acid-base buffer solution, and a 0.01%-0.5% surfactant solution.

[0013] In the second state, the absorbent liquid comprises at least one of tap water, a 0-10% hydrogen peroxide solution, a 0-1% hypochlorous acid solution, a 0.1-3% acid-base buffer solution, and a 0.01%-0.5% surfactant solution.

[0014] By setting the absorbent liquid as a solution, the effect of the absorbent liquid absorbing pollutants in the air can be higher. By setting the absorbent liquid as clean water, pure water, etc., the absorbent liquid can not cause additional impact on air quality after humidifying the air.

[0015] In some embodiments, the purification device further comprises a liquid pump, which is arranged in the liquid storage tank or the membrane tube. The liquid pump can pump the absorbent liquid in the liquid storage tank into the membrane tube through the liquid inlet end and return to the liquid storage tank through the liquid outlet end.

[0016] By arranging the liquid pump, the absorbent liquid in the liquid storage tank can be input into the membrane tube, and the liquid pressure of the absorbent liquid in the membrane tube can be controlled.

[0017] In some embodiments, the height of the liquid inlet end is higher than that of the liquid outlet end.

[0018] By setting the height of the liquid inlet end to be higher than that of the liquid outlet end, the absorbent liquid can flow along the membrane tube under the action of gravity, so that the liquid pressure of the absorbent liquid in the membrane tube is more easily less than the air pressure outside the membrane tube.

[0019] In some embodiments, the purification device further comprises a catalyst plate arranged in the liquid storage tank.

[0020] By arranging the catalyst plate, the pollutants in the absorbent liquid returned to the liquid storage tank can be decomposed and purified by the catalyst plate, so that the absorbent liquid has better pollutant absorption performance when it is reused.

[0021] In some embodiments, the catalyst plate is arranged on the bottom wall of the liquid storage tank, and a plurality of second through holes are formed in the catalyst plate, and the liquid inlet of the liquid pump and the liquid outlet end are located on opposite sides of the catalyst plate.

[0022] By arranging the liquid outlet of the liquid pump and the liquid outlet end of the membrane tube on opposite sides of the catalyst plate, the absorption liquid containing pollutants flowing back into the liquid storage tank can be forced to contact the catalyst plate, so that the pollutants in the absorption liquid can be decomposed and purified by the catalyst plate.

[0023] In some embodiments, the liquid storage tank has a mounting side wall connected to the liquid outlet end, the catalyst plate is arranged on one side of the bottom wall of the liquid storage tank adjacent to the mounting side wall, and the catalyst plate has a spacing from the mounting side wall.

[0024] By arranging the catalyst plate adjacent to the mounting side wall, the decomposition and purification effect of the catalyst plate on the absorption liquid containing pollutants can be better.

[0025] In some embodiments, the purification device further comprises an ultraviolet lamp arranged in the liquid storage tank.

[0026] By arranging the ultraviolet lamp, the pollutants in the absorption liquid can be further decomposed.

[0027] In some embodiments, the catalyst plate comprises a plate body and a photocatalyst layer, the photocatalyst layer is arranged on one side of the plate body, the ultraviolet lamp is arranged on the mounting side wall, and the ultraviolet lamp is arranged opposite to the photocatalyst layer.

[0028] By arranging the ultraviolet lamp in cooperation with the photocatalyst layer, the effect of decomposing and purifying the pollutants in the absorption liquid can be better.

[0029] In some embodiments, the catalyst plate further comprises an adsorption layer arranged on one side of the plate body and opposite to the photocatalyst layer.

[0030] By arranging the adsorption layer, the pollutants in the absorption liquid can be concentrated on the catalyst plate, so that the ultraviolet lamp and the photocatalyst layer can fully decompose and purify the pollutants.

[0031] In some embodiments, the number of membrane tubes is a plurality, and the plurality of membrane tubes are arranged at intervals along a predetermined direction.

[0032] By arranging a plurality of membrane tubes, the plurality of membrane tubes can all absorb pollutants in the air to improve the purification efficiency.

[0033] In some embodiments, the purification device further comprises an air guiding part, an air outlet direction of the air guiding part is towards the membrane tube and the gap between adjacent membrane tubes.

[0034] By setting the air guiding part, air pressure can be formed outside the membrane tube, so that the liquid pressure in the membrane tube is more likely to be lower than the air pressure outside the membrane tube.

[0035] In a second aspect, based on the above-mentioned purification device, the embodiments of the present application further propose an air conditioner comprising the above-mentioned purification device.

[0036] By integrating the purification device of the present application in the air conditioner, the air conditioner not only has the functions of refrigeration and heating, but also has the functions of air purification and humidification.

[0037] In some embodiments, the membrane tube is arranged in the air conditioner, and the membrane tube is located at the air inlet side or the air outlet side of the air conditioner.

[0038] In a third aspect, based on the above-mentioned purification device, the embodiments of the present application further propose a purification method applied to the above-mentioned purification device, the method comprising:

[0039] By the liquid pump, the absorbent liquid in the liquid storage tank is input into the membrane tube, and the liquid pressure of the absorbent liquid in the membrane tube is not greater than the resultant force of the air pressure outside the membrane tube and the transmembrane resistance of the membrane tube, so as to absorb the pollutants in the gas outside the membrane tube into the absorbent liquid in the membrane tube;

[0040] The absorbent liquid flowing through the membrane tube is pumped into the liquid storage tank, and the pollutants in the absorbent liquid are purified by the ultraviolet lamp and the catalyst plate;

[0041] Alternatively, by the liquid pump, the absorbent liquid in the liquid storage tank is pumped into the membrane tube, and the liquid pressure of the absorbent liquid in the membrane tube is greater than the resultant force of the air pressure outside the membrane tube and the transmembrane resistance of the membrane tube, so as to seep the absorbent liquid in the membrane tube out of the membrane tube.

[0042] In a fourth aspect, based on the above-mentioned purification device, the embodiments of the present application further propose a cleaning method applied to the above-mentioned purification device, the method comprising:

[0043] The cleaning liquid is injected into the liquid storage tank, the absorbent liquid in the liquid storage tank is input into the membrane tube by the liquid pump,

[0044] The cleaning liquid of the membrane tube is input into the liquid storage tank, and the pollutants absorbed in the cleaning liquid are purified by the ultraviolet lamp and the catalyst plate;

[0045] The cleaning liquid in the liquid storage tank and the membrane tube is removed. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0047] Figure 1 A structure schematic diagram of the purification device disclosed in the embodiments of the present application is shown;

[0048] Figure 2 A structure schematic diagram of the membrane tube is shown; Figure 1

[0049] Figure 3 A structure schematic diagram of the catalyst plate is shown; Figure 1

[0050] Figure 4 A top view schematic diagram of the internal structure of the liquid storage tank is shown; Figure 1

[0051] Figure 5 A structure schematic diagram of the catalyst plate is shown; Figure 1

[0052] Figure 6 A flow chart of the purification method disclosed in the embodiments of the present application is shown;

[0053] Figure 7 A flow chart of the cleaning method disclosed in the embodiments of the present application is shown.

[0054] Reference signs:

[0055] 100-liquid storage tank, 110-mounting side wall, 120-liquid adding port,

[0056] 200-membrane tube, 210-liquid inlet end, 220-liquid outlet end, 230-membrane hole,

[0057] 300-liquid pump, 310-pump liquid tube,

[0058] 400-catalyst plate, 410-second through hole, 420-plate body, 430-photocatalyst layer, 440-adsorption layer,

[0059] 500-ultraviolet lamp,

[0060] 600-liquid outlet tube,

[0061] 700-liquid return tube. DETAILED DESCRIPTION

[0062] ​​​​Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope of protection of the present application.

[0063] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, motion condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0064] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those of ordinary skill in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0066] The present application will be described below in conjunction with the accompanying drawings and specific embodiments:

[0067] Embodiment one

[0068] Please refer to Figures 1-2 The embodiments of the present application disclose a kind of purification device, including liquid storage tank 100 and membrane tube 200, which can be applied to air conditioning, fan and fresh air device and the like electrical equipment.

[0069] Among them, membrane tube 200 is the basic component of the purification device of the present application, it should be understood that membrane tube 200 is a kind of pipe body with filtering and purifying function, membrane tube 200 is hollow structural member, membrane hole 230 is arranged on the surface of membrane tube 200, membrane hole 230 can communicate the hollow pipe in membrane tube 200 with external space.

[0070] The liquid storage tank 100 can be a box structure, and the liquid storage tank 100 can store the absorption liquid. The liquid storage tank 100 can be made of corrosion-resistant and light-aging plastic, glass, or stainless steel. The liquid storage capacity of the liquid storage tank 100 can be set to 400-3000 mL. The membrane tube 200 has a liquid inlet end 210 and a liquid outlet end 220. The liquid inlet end 210 of the membrane tube 200 is connected to the liquid storage tank 100, so that the absorption liquid in the liquid storage tank 100 can be input into the membrane tube 200 through the liquid inlet end 210 of the membrane tube 200, and then discharged through the liquid outlet end 220 of the membrane tube 200 after flowing through the membrane tube 200. After the absorption liquid in the liquid storage tank 100 is input into the membrane tube 200, a certain liquid pressure can be formed in the membrane tube 200. Therefore, by adjusting the liquid pressure of the absorption liquid input into the membrane tube 200, the purification device of the present application can have a first state. The liquid storage tank 100 is provided with an openable and closable liquid inlet port 120, through which the absorption liquid can be loaded into the liquid storage tank 100.

[0071] In the membrane tube 200, the absorption liquid input into the membrane tube 200 can form a certain liquid pressure, the gas outside the membrane tube 200 can form a certain gas pressure on the membrane tube 200, and the membrane tube 200 has a transmembrane resistance of the absorption liquid in the membrane tube 200 to the absorption liquid discharged through the membrane hole 230 of the membrane tube 200, and a transmembrane resistance of the gas outside the membrane tube 200 to the gas entering the membrane tube 200 through the membrane hole 230 of the membrane tube 200. The transmembrane resistance of the absorption liquid and the transmembrane resistance of the air in the membrane tube 200 can be unified as a transmembrane resistance.

[0072] In the first state, the liquid pressure of the absorption liquid in the membrane tube 200 is not greater than the resultant force of the gas pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the pollutants in the gas outside the membrane tube 200 can penetrate into the membrane tube 200 through the membrane hole 230 of the membrane tube 200, so that the pollutants in the gas outside the membrane tube 200 can be absorbed by the absorption liquid to achieve the effect of purifying the gas. And the absorption liquid located in the membrane tube 200 will not be discharged to the outside of the membrane tube 200 through the membrane hole 230 of the membrane tube 200, so as to prevent the absorption liquid in the membrane tube 200 from leaking out.

[0073] It should be understood that when the liquid pressure of the absorption liquid in the membrane tube 200 is the same as the resultant force of the gas pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, the pollutants in the gas outside the membrane tube 200 can penetrate into the membrane tube 200 through the membrane tube 200 and contact the absorption liquid, so that the pollutants in the gas can be absorbed by the absorption liquid.

[0074] When the liquid pressure of the absorbent liquid in the membrane tube 200 is less than the combined force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, the membrane tube 200 has a negative pressure environment for the gas outside the membrane tube 200, so that the pollutants in the gas outside the membrane tube 200 can more efficiently permeate into the membrane tube 200 through the membrane tube 200 and fully contact the absorbent liquid, so that the pollutants in the gas can be better absorbed by the absorbent liquid.

[0075] Specifically, the purification device of the present application can be placed in an environment containing pollutants in the air, and by making the liquid pressure of the absorbent liquid input into the membrane tube 200 less than the combined force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, the pollutants in the ambient air can permeate into the membrane tube 200 and be absorbed by the absorbent liquid in the membrane tube 200, so as to achieve the purpose of purifying the ambient air. In the process of purifying the ambient air by the purification device of the present application, the absorbent liquid is always located in the membrane tube 200, so that when the absorbent liquid in the membrane tube 200 absorbs the pollutants in the air, it is still located in the membrane tube 200, thereby avoiding the secondary pollution caused by the leakage of the absorbent liquid after absorbing the pollutants. In addition, since the membrane tube 200 also has a certain permeability, the gas passing through the membrane tube 200 can also drive the absorbent liquid in the membrane tube 200 to vaporize, so that at least part of the absorbent liquid in the membrane tube 200 can permeate out of the membrane tube 200 through the membrane tube 200, so as to achieve the purpose of humidifying the gas outside the membrane tube 200. In addition, after the absorbent liquid permeates out of the membrane tube 200, the absorbent liquid can sterilize the gas outside the membrane tube 200.

[0076] In the purification device of the present application, the liquid storage tank 100 can be used to store the absorbent liquid, and the liquid storage tank 100 is connected with the liquid inlet end 210 of the membrane tube 200. The absorbent liquid in the liquid storage tank 100 can be input into the membrane tube 200 through the liquid inlet end 210 of the membrane tube 200 and discharged through the liquid outlet end 220 of the membrane tube 200, so that the absorbent liquid can flow in the membrane tube 200 to form a flow. By making the liquid pressure of the absorbent liquid in the membrane tube 200 not greater than the combined force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, the pollutants in the gas outside the membrane tube 200 can permeate into the membrane tube 200 through the membrane hole 230 of the membrane tube 200 and be absorbed by the absorbent liquid in the membrane tube 200, so as to achieve the purpose of purifying the gas outside the membrane tube 200. During the flow of the absorbent liquid in the membrane tube 200, only the pollutants in the air outside the membrane tube 200 enter the membrane tube 200 through the membrane hole 230 and are absorbed by the absorbent liquid in the membrane tube 200, so as to prevent the absorbent liquid in the membrane tube 200 from leaking out of the membrane tube 200 after absorbing the pollutants in the air, thereby avoiding secondary pollution.

[0077] Reference Figure 1 and Figure 2In some embodiments, in order to make the purification device of the present application have more functions, by adjusting the liquid pressure of the absorption liquid input into the membrane tube 200, the purification device of the present application can also have a second state, in which the liquid pressure of the absorption liquid input into the membrane tube 200 is greater than the resultant force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the absorption liquid in the membrane tube 200 can permeate through the membrane holes 230 of the membrane tube 200 to the outside of the membrane tube 200, and the absorption liquid permeated to the outside of the membrane tube 200 can be mixed with the air outside the membrane tube 200 to achieve the purpose of humidifying the air outside the membrane tube 200.

[0078] Specifically, the purification device of the present application can be placed in an environment with low air humidity, and by making the liquid pressure of the absorption liquid input into the membrane tube 200 greater than the resultant force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, the absorption liquid in the membrane tube 200 can be discharged to the outside of the membrane tube 200 through the membrane holes 230 to mix with the air in the environment, which can increase the air humidity in the environment to achieve the purpose of humidifying the air in the environment.

[0079] When the user actually uses the purification device of the present application, the liquid pressure of the absorption liquid in the membrane tube 200 can be adjusted according to the air quality and air humidity in the environment. When the air quality in the environment is poor, the liquid pressure in the membrane tube 200 can be adjusted to be not greater than the resultant force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the purification device of the present application can realize the function of purifying air. When the air humidity in the environment is low and dry, the liquid pressure in the membrane tube 200 can be adjusted to be greater than the resultant force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the purification device of the present application can realize the function of air humidification.

[0080] In addition, it should also be understood that when the purification device of the present application is in the second state, after the absorption liquid permeates through the membrane holes 230 of the membrane tube 200 to the outside of the membrane tube 200, the absorption liquid can also flow along the outer wall of the membrane tube 200, so that a liquid film structure composed of the absorption liquid is formed on the outer wall of the membrane tube 200, and the pollutants in the air can be absorbed by the absorption liquid on the outer surface of the membrane tube 200 after contacting with the outer wall of the membrane tube 200, which can also achieve the purpose of purifying air.

[0081] As can be seen from the above, the purification device of the present application can play the roles of purification and humidification whether it is in the first state or the second state, the first state is more favorable for the adsorption of pollutants, and the second state is more favorable for humidification and sterilization.

[0082] When the user actually uses the purification device of the present application, the liquid pressure of the absorption liquid in the membrane tube 200 can be adjusted according to the air quality and air humidity in the environment. When the air quality in the environment is poor, the liquid pressure in the membrane tube 200 can be adjusted to be less than the resultant force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the purification device of the present application can realize the function of purifying air. When the air humidity in the environment is low and dry, the liquid pressure in the membrane tube 200 can be adjusted to be greater than the resultant force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the purification device of the present application can realize the function of air humidification.

[0083] In other embodiments of the present application, the membrane tube 200 can also be selected or replaced according to actual needs. For example, for places that often need to be humidified, to ensure smooth exudation, a membrane tube with a slightly larger aperture of the first through hole 230 can be selected. For places where pollutants need to be adsorbed without frequent humidification, a relatively dense membrane tube can be selected.

[0084] In some embodiments, in order to make the absorption liquid input into the membrane tube 200 more fully absorb the pollutants in the air outside the membrane tube 200, in the first state, the absorption liquid stored in the liquid storage tank 100 can be a 0-10% hydrogen peroxide solution, a 0-1% hypochlorous acid solution, a 0.1-3% acid-base buffer solution, and a 0.01%-0.5% surfactant solution, or a solution formed by mixing the above-mentioned solutions. The use of the above-mentioned solutions or the mixed solution formed by the above-mentioned solutions can make the pollutants in the air more easily absorbed by the absorption liquid. It should be understood that the absorption liquid can be selected according to the water-soluble properties of the pollutants in the gas outside the membrane tube 200. The specific type of the absorption liquid is not limited in the present application.

[0085] In some embodiments, in order to make the absorption liquid input into the membrane tube 200 penetrate into the air outside the membrane tube 200 and mix with the air, the effect on the human body is relatively small, in the second state, the absorption liquid stored in the liquid storage tank 100 can be tap water, pure water, deionized water or mineral water. The above-mentioned liquids do not contain chemical reagents themselves, and are therefore non-toxic and harmless. After the above-mentioned liquids are mixed with air, they can only humidify the air and will not affect the air quality.

[0086] Of course, it should also be understood that in the second state, the absorption liquid stored in the liquid storage tank 100 can also be added with some additives beneficial to the human body, so that the air mixed with the absorption liquid contains substances beneficial to the human body.

[0087] In addition, in the case that the purifying device of the present application is in the second state, the absorption liquid can also use at least one of a 0-10% hydrogen peroxide solution, a 0-1% hypochlorous acid solution, a 0.1-3% acid-base buffer solution and a 0.01%-0.5% surfactant solution. When the absorption liquid uses the above-mentioned solutions, the absorption liquid can permeate through the membrane holes 230 of the membrane tube 200 to the outside of the membrane tube 200, and flow along the outer wall of the membrane tube 200, so as to absorb the pollutants in the air and sterilize the air.

[0088] With reference to Figure 1 In some embodiments, in order to adjust the liquid pressure of the absorption liquid input into the membrane tube 200, the purifying device of the present application can also be provided with a liquid pump 300. The liquid pump 300 can be arranged in the liquid storage tank 100 or the membrane tube 200. The liquid pump 300 can pump the absorption liquid in the liquid storage tank 100 into the membrane tube 200 through the liquid inlet end 210 of the membrane tube 200, so as to achieve the purpose of inputting the absorption liquid in the liquid storage tank 100 into the membrane tube 200. By increasing the flow of the absorption liquid input into the membrane tube 200 through the liquid pump 300, the liquid pressure of the absorption liquid in the membrane tube 200 can be increased. By reducing the flow of the absorption liquid input into the membrane tube 200, the liquid pressure of the absorption liquid in the membrane tube 200 can be reduced, so that the purifying device of the present application can be switched between the first state and the second state.

[0089] With reference to Figure 3 And Figure 4 In order to make the structure of the purifying device of the present application more compact, the liquid pump 300 of the present application can be arranged in the liquid storage tank 100, so that the liquid pump 300 does not occupy additional space. Specifically, the liquid pump 300 can be arranged at the bottom of the liquid storage tank 100. The liquid inlet of the liquid pump 300 is located in the liquid storage tank 100 and at the bottom side of the liquid storage tank 100. The liquid pump 300 is also provided with a pump liquid pipe 310. One end of the pump liquid pipe 310 is connected with the liquid pump 300, and the other end of the pump liquid pipe 310 extends to the top of the liquid storage tank 100 and is connected with the liquid inlet end 210 of the membrane tube 200.

[0090] Of course, it should also be noted that in other embodiments, the liquid storage tank 100 of the present application can also be arranged above the liquid inlet end 210 of the membrane tube 200, and the absorbent liquid in the liquid storage tank 100 can flow into the membrane tube 200 under the action of gravity. The liquid storage tank 100 can be provided with a flow valve, which can adjust the flow rate of the absorbent liquid input into the membrane tube 200 through the liquid storage tank 100. When the flow valve is expanded, the flow rate of the absorbent liquid input into the membrane tube 200 can be increased, so that the liquid pressure of the absorbent liquid in the membrane tube 200 is increased to be greater than the combined force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the absorbent liquid input into the membrane tube 200 can be discharged through the membrane hole 230 of the membrane tube 200. At this time, the purification device is in the second state. When the flow valve is reduced, the flow rate of the absorbent liquid input into the membrane tube 200 can be reduced, so that the liquid pressure of the absorbent liquid in the membrane tube 200 is reduced to be not greater than the combined force of the air pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so that the pollutants in the air outside the membrane tube 200, such as odor molecules, can be absorbed by the absorbent liquid in the membrane tube 200. At this time, the purification device is in the first state.

[0091] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, in order to improve the utilization rate of the absorbent liquid in the liquid storage tank 100 of the present application, and reduce the use cost of the purification device of the present application, the absorbent liquid in the liquid storage tank 100 can be arranged for recycling.

[0092] Specifically, the liquid outlet end 220 of the membrane tube 200 can also be arranged to be connected with the liquid storage tank 100. The liquid pump 300 can pump the absorbent liquid in the liquid storage tank 100 into the membrane tube 200 through the liquid inlet end 210 of the membrane tube 200. After the absorbent liquid in the membrane tube 200 absorbs the pollutants in the air outside the membrane tube 200, the liquid pump 300 can pump the absorbent liquid in the membrane tube 200 into the liquid storage tank 100 through the liquid outlet end 220 of the membrane tube 200, so as to achieve the purpose of returning the absorbent liquid in the membrane tube 200 to the liquid storage tank 100. After the absorbent liquid in the membrane tube 200 is returned to the liquid storage tank 100, the liquid pump 300 can again pump the absorbent liquid in the liquid storage tank 100 into the membrane tube 200, so that the absorbent liquid in the membrane tube 200 passes through the membrane tube 200 again to form a flow in the membrane tube 200. In this way, the absorbent liquid can again absorb the pollutants in the air outside the membrane tube 200, thereby improving the utilization rate of the absorbent liquid.

[0093] By repeatedly circulating the absorbent liquid in the membrane tube 200, the absorbent liquid can be fully utilized, and the absorbent liquid can absorb the pollutants in the air outside the membrane tube 200. After the absorbent liquid reaches the absorption limit, the purification device of the present application can maintain good air purification performance by replacing the absorbent liquid in the liquid storage tank 100.

[0094] Reference Figure 1In some embodiments, in order to more conveniently control the liquid pressure in the membrane tube 200 to be less than or equal to the air pressure outside the membrane tube 200 and the trans-membrane resistance of the membrane tube 200, the height of the liquid inlet end 210 of the membrane tube 200 can be set to be higher than the height of the liquid outlet end 220.

[0095] It should be understood that when the height of the liquid inlet end 210 of the membrane tube 200 is lower than the height of the liquid outlet end 220 of the membrane tube 200, in order to enable the absorbent liquid to pass through the membrane tube 200 from the liquid inlet end 210 to the liquid outlet end 220 of the membrane tube 200, the absorbent liquid needs to have a relatively high liquid pressure to rise from the liquid inlet end 210 to the liquid outlet end 220 of the membrane tube 200, which accordingly causes the liquid pressure of the absorbent liquid in the membrane tube 200 to be too high, and even in some cases, the liquid pressure of the absorbent liquid in the membrane tube 200 to be greater than the combined force of the air pressure outside the membrane tube 200 and the trans-membrane resistance of the membrane tube 200, so that the absorbent liquid in the membrane tube 200 is prone to be discharged through the membrane holes 230 of the membrane tube 200, and the pollutants in the air outside the membrane tube 200 are not easy to enter into the membrane tube 200 through the membrane holes 230 of the membrane tube 200 to be absorbed.

[0096] When the height of the liquid inlet end 210 of the membrane tube 200 is higher than the height of the liquid outlet end 220 of the membrane tube 200, after the absorbent liquid in the liquid storage tank 100 reaches the liquid inlet end 210 of the membrane tube 200, the absorbent liquid can flow along the channel in the membrane tube 200 to the liquid outlet end 220 of the membrane tube 200 under the action of its own gravity, or the absorbent liquid can pass through the membrane tube 200 by the liquid pump 300 applying a relatively small pressure to the absorbent liquid, so that the liquid pressure of the absorbent liquid in the membrane tube 200 can be controlled to be relatively small, and it is more easy to enable the liquid pressure of the absorbent liquid in the membrane tube 200 to be less than the combined force of the air pressure outside the membrane tube 200 and the trans-membrane resistance of the membrane tube 200, so that the pollutants in the air outside the membrane tube 200 can enter into the membrane tube 200 through the membrane holes 230 of the membrane tube 200 to be absorbed by the absorbent liquid, and at this time, the purification device is in the first state.

[0097] When it is needed to switch the purification device to the second state, the liquid pressure of the absorbent liquid in the membrane tube 200 can be increased by the liquid pump 300, and the gravitational potential energy of the absorbent liquid in the membrane tube 200 can be used to enable the absorbent liquid to be discharged through the membrane holes 230 of the membrane tube 200 to contact and mix with the air outside the membrane tube 200. At the same time, the liquid inlet end 210 being higher than the liquid outlet end 220 can enable the liquid film formed by the absorbent liquid outside the membrane tube 200 to flow to the liquid outlet end 220 under the action of gravity in the second state of the purification device, so that the absorbent liquid can be fully attached to the outer wall of the membrane tube 200.

[0098] Reference Figure 1 , Figure 2 and Figure 3In some embodiments, in order to maintain good pollutant absorption performance of the absorption liquid in the liquid tank 100 after multiple cycles of the absorption liquid in the membrane tube 200, and to achieve absorption liquid regeneration cycle, the purification device of the present application can further be provided with a catalyst plate 400, which can be installed in the liquid tank 100. When the liquid pump 300 inputs the absorption liquid in the liquid tank 100 into the membrane tube 200, the absorption liquid in the membrane tube 200 absorbs the pollutants in the air outside the membrane tube 200, so that the absorption liquid in the membrane tube 200 contains pollutants. After the liquid pump 300 pumps the absorption liquid containing air pollutants in the membrane tube 200 into the liquid tank 100, the catalyst plate 400 installed in the liquid tank 100 can purify the absorption liquid flowing back into the liquid tank 100 to absorb and decompose the air pollutants contained in the absorption liquid. The purified absorption liquid can be pumped again by the liquid pump 300 into the membrane tube 200 to absorb the pollutants in the air outside the membrane tube 200.

[0099] Specifically, the catalyst plate 400 can be provided as a plate-shaped structure with a surface coated with a catalyst. The absorption liquid containing air pollutants can be decomposed and absorbed after contacting the catalyst on the surface of the catalyst plate 400, so that the purified absorption liquid can have good pollutant absorption performance when re-entering the membrane tube 200. The catalyst plate 400 adopts a plate-shaped structure, which has a larger surface area, so that more catalysts can be provided on the surface of the catalyst plate 400, thereby better purifying and decomposing the pollutants absorbed in the absorption liquid. The catalyst plate 400 can achieve catalytic degradation of pollutants through light, heat or other means.

[0100] Of course, it should be understood that the catalyst plate 400 of the present application can not be limited to a plate-shaped structure, but can also adopt a spherical structure, a ring structure or a column structure, etc. The above-mentioned various structures can all be used as a carrier of the catalyst.

[0101] Reference Figure 1 and Figure 3In some embodiments, in order to make the absorbent liquid in the liquid storage tank 100 sufficiently contact the catalyst plate 400, the catalyst plate 400 can be vertically arranged on the bottom wall of the liquid storage tank 100, the liquid pump 300 has a liquid inlet for sucking the absorbent liquid in the liquid storage tank 100, and the liquid inlet of the liquid pump 300 and the liquid outlet end 220 of the membrane tube 200 can be arranged on the opposite sides of the catalyst plate 400, respectively. Specifically, the connection between the liquid outlet end 220 of the membrane tube 200 and the liquid storage tank 100 is located on one side of the catalyst plate 400, and the liquid inlet of the liquid pump 300 is located on the other side of the catalyst plate 400. Therefore, after the absorbent liquid in the membrane tube 200 that has absorbed air pollutants flows back to the liquid storage tank 100 through the liquid outlet end 220 of the membrane tube 200, it needs to pass through the catalyst plate 400 before being sucked into the liquid pump 300 through the liquid inlet 210 of the liquid pump 300, so as to be circulated to the membrane tube 200 again, thereby forcing the absorbent liquid to contact the catalyst plate 400, so that the pollutants in the absorbent liquid can be sufficiently decomposed and purified by the catalyst plate 400.

[0102] The catalyst plate 400 can be provided with a second through hole 410 for the absorbent liquid to pass through. Specifically, the catalyst plate 400 can divide the space in the liquid storage tank 100 into a first region and a second region. After the absorbent liquid discharged from the liquid outlet end 220 of the membrane tube 200 enters the liquid storage tank 100, it is located in the first region of the liquid storage tank 100. The absorbent liquid can pass through the second through hole 410 of the catalyst plate 400 to reach the second region of the liquid storage tank 100. The second region of the liquid storage tank 100 is in communication with the liquid inlet of the liquid pump 300, so that the purified absorbent liquid in the second region of the liquid storage tank 100 can be sucked into the liquid pump 300 through the liquid inlet.

[0103] The second through hole 410 of the catalyst plate 400 can also be coated with a catalyst. The absorbent liquid needs to pass through the second through hole 410 of the catalyst plate 400 and can contact the coated catalyst in the second through hole 410 during the process of passing through the second through hole 410, thereby making the absorbent liquid contact the catalyst on the catalyst plate 400 more sufficiently, so that the purification effect of the absorbent liquid is better.

[0104] In addition, it should be noted that the liquid outlet end 220 of the membrane tube 200 can be connected to the side wall of one side of the liquid storage tank 100, and the side wall of the side of the liquid storage tank 100 is the mounting side wall 110. Therefore, the concentration of pollutants in the absorbent liquid in the part of the liquid storage tank 100 adjacent to the mounting side wall 110 is relatively the highest. The catalyst plate 400 can be arranged in the position adjacent to the mounting side wall 110 in the liquid storage tank 100, so that the catalyst plate 400 is relatively closer to the mounting side wall 110, thereby making the absorbent liquid with a higher concentration of pollutants in the liquid storage tank 100 more efficiently contact and react with the catalyst plate 400.

[0105] Reference Figure 1 and Figure 4In some embodiments, the purification device of the present application can further be provided with an ultraviolet lamp 500, which can be arranged in the liquid storage tank 100. The ultraviolet lamp 500 can emit ultraviolet rays to irradiate the absorption liquid in the liquid storage tank 100. The ultraviolet rays have sterilization and disinfection effects. Therefore, when bacteria grow in the absorption liquid in the liquid storage tank 100, the ultraviolet lamp 500 can kill the bacteria in the liquid storage tank 100.

[0106] Reference Figure 1 and Figure 5 In some embodiments, the catalyst on the catalyst plate 400 of the present application can be provided as a photocatalyst. Specifically, the catalyst plate 400 can be provided to include a plate body 420 and a photocatalyst layer 430 arranged on one side of the plate body 420. An ultraviolet lamp can be arranged opposite to the catalyst plate 400. The catalyst plate 400 and the ultraviolet lamp 500 together constitute a photocatalytic degradation assembly. The ultraviolet lamp 500 serves as a light source for the degradation of pollutants on the catalyst plate 400. Specifically, when the catalyst plate 400 is arranged in the liquid storage tank 100, the ultraviolet lamp 500 can be arranged on the side wall of the liquid storage tank 100. In this way, the side wall of the liquid storage tank 100 can provide a mounting base for the ultraviolet lamp 500, so that the liquid storage tank 100 does not need to be additionally provided with a mounting structure for mounting the ultraviolet lamp 500. The ultraviolet rays emitted by the ultraviolet lamp 500 can irradiate the photocatalyst layer 430 of the catalyst plate 400 to activate the photocatalyst layer 430, so that the photocatalyst layer 430 has a better decomposition and purification effect on the pollutants in the absorption liquid. In this way, the absorption liquid in the liquid storage tank 100 has a better absorption effect on the pollutants in the air after being input into the membrane tube 200 again. In addition, it should be understood that the plate body 420 and the photocatalyst layer 430 of the catalyst plate 400 are both provided with corresponding through holes to form the second through hole 410. In the case of using water as the absorption liquid for humidification, the ultraviolet photocatalytic assembly can not be turned on. Of course, the ultraviolet photocatalytic assembly can also be turned on to ensure that the water is clean and odorless. When using at least one of a 0-10% hydrogen peroxide solution, a 0-1% hypochlorous acid solution, a 0.1-3% acid-base buffer solution, and a 0.01%-0.5% surfactant solution as the absorption liquid for sterilization in the second state, the ultraviolet photocatalytic assembly can also not be turned on. Under the membrane barrier effect of the membrane tube 200, the absorption liquid contacts the air outside the membrane tube 200 for sterilization. Bacteria will not enter the liquid storage tank 100 with the absorption liquid, so that the absorption liquid can be prevented from being contaminated by bacteria.

[0107] Specifically, the photocatalyst layer 430 described above can be titanium oxide, specifically nano-titanium oxide or modified nano-titanium oxide. The thickness of the catalyst layer 430 can be set to 1-20 μm. The wavelength of the ultraviolet rays emitted by the ultraviolet lamp 500 can be set to 240 nm-355 nm.

[0108] In addition, the ultraviolet lamp 500 can adopt an LED lamp panel, which includes an array formed by a plurality of LED lamp beads arranged thereon, so that the structure of the ultraviolet lamp 500 is more compact, and the power consumption is also lower, thereby reducing the power consumption of the purification device.

[0109] Reference Figure 5 In some embodiments, in order to make the ultraviolet lamp 500 and the photocatalyst layer 430 on the catalyst plate 400 better absorb the pollutants in the absorption liquid, the catalyst plate 400 of the present application can also be provided to include an adsorption layer 440, which can be arranged on one side of the plate body 420 of the catalyst plate 400 and arranged opposite to the photocatalyst layer 430, so that the adsorption layer 440 and the photocatalyst layer 430 are located on opposite sides of the plate body 420, and the thickness of the adsorption layer 440 can be 5-50mm. The adsorption layer 440 can be used for concentrated storage-release of active ingredients of the absorption liquid and auxiliary capture of pollutants, and preferably the adsorption layer 440 enables non-volatile components in the absorption liquid to exist in the adsorbent pores. At the same time, the adsorption layer 440 can also enable the pollutants to stay on the catalyst plate 400, and after the ultraviolet lamp 500 irradiates the photocatalyst layer 430, the pollutants can be fully decomposed and purified, realizing enrichment and degradation of the pollutants.

[0110] Specifically, the adsorption layer 440 can adopt at least one of molecular sieve, alumina, activated carbon and modified activated carbon, and the adsorption layer 440 is provided with through holes corresponding to the through holes of the plate body 420 and the photocatalyst layer 430 to form the membrane holes 230 of the catalyst plate 400. In some embodiments, the catalyst plate 400 itself is also an adsorbent material, the catalyst plate 400 itself constitutes the adsorption layer 440, and the photocatalyst layer 430 is attached to one side of the adsorption layer 440.

[0111] Reference Figure 1 In some embodiments, in order to make the purification device of the present application have better air purification effect, the number of the membrane tubes 200 can be provided to be multiple, the multiple membrane tubes 200 are all in communication with the liquid storage tank 100, and the multiple membrane tubes 200 can be arranged at intervals along a predetermined direction, and have gaps between adjacent membrane tubes 200, so that the surface of each membrane tube 200 is not blocked by each other, thereby enabling the membrane holes 230 on the surface of each membrane tube 200 to suck in the pollutants in the air, or discharge the absorption liquid through the membrane holes 230 of each membrane tube 200 to humidify the air.

[0112] The preset direction in the above can be set as a straight line direction or a ring direction, etc., so that the plurality of membrane tubes 200 are spaced apart. When the plurality of membrane tubes 200 are distributed along the straight line preset direction, the thickness of the assembly formed by the plurality of membrane tubes 200 as a whole is relatively thinner, thereby facilitating the installation of the purification device of the present application into other air guiding and air creating equipment. Specifically, when the purification device of the present application is applied to an air conditioner, the plurality of membrane tubes 200 are spaced apart along the straight line direction, the liquid storage tank 100 is arranged on one side of the plurality of membrane tubes 200, and the width dimension of the liquid storage tank 100 is set to be close to the outer diameter dimension of the plurality of membrane tubes 200, so that the overall width dimension or thickness dimension of the purification device of the present application is smaller, thereby facilitating the integration into other air guiding equipment. In some embodiments, the membrane tubes 200 can be arranged in a multi-layer curtain array to provide more interfaces for gaseous pollutants to interact with the absorption liquid.

[0113] It should be noted that when the number of membrane tubes 200 is set to be multiple, in order to facilitate the input of the absorption liquid in the liquid storage tank 100 into the plurality of membrane tubes 200 and the return of the absorption liquid in the plurality of membrane tubes 200 to the liquid storage tank 100, the purification device of the present application further comprises a liquid outlet pipe 600 and a liquid return pipe 700, wherein the liquid inlet end 210 of the plurality of membrane tubes 200 is in communication with the liquid outlet pipe 600, and the liquid outlet pipe 600 is in communication with the liquid storage tank 100, so that the liquid pump 300 can first pump the absorption liquid in the liquid storage tank 100 into the liquid outlet pipe 600, and then the absorption liquid flows from the liquid outlet pipe 600 into the plurality of membrane tubes 200. The length direction of the liquid outlet pipe 600 can be set to be the same as the preset direction.

[0114] Correspondingly, the liquid return pipe 700 can be in communication with the liquid outlet end 220 of the membrane tube 200 and connected with the liquid storage tank 100, so that the absorption liquid in the plurality of membrane tubes 200 can first flow back into the liquid return pipe 700, and then flow back into the liquid storage tank 100 from the liquid return pipe 700. The length direction of the liquid return pipe 700 can also be arranged along the preset direction, so that the liquid return pipe 700 can be in communication with the plurality of membrane tubes 200. The liquid return pipe 700 is configured to receive the absorption liquid flowing out of the membrane tube 200 or along the water film outside the membrane tube 200, and to deliver the liquid back to the liquid storage tank 100 by pumping, etc.

[0115] In some embodiments, in order to make the pollutants in the air outside the membrane tube 200 more easily absorbed by the absorption liquid inside the membrane tube 200 through the membrane holes 230 of the membrane tube 200, the purification device of the present application can also be provided with an air guide part, and the air outlet direction of the air guide part can be arranged to face the plurality of membrane tubes 200 and the gaps between the plurality of membrane tubes 200, so that the air guide part can form air pressure on the outer surface of the membrane tube 200, which is more conducive to making the air pressure outside the membrane tube 200 greater than the liquid pressure inside the membrane tube 200, so that the pollutants in the air outside the membrane tube 200 are more easily absorbed by the absorption liquid through the membrane holes 230 of the membrane tube 200 into the membrane tube 200, so that the purification efficiency of the purification device of the present application is higher.

[0116] Example Two

[0117] In this embodiment, the liquid storage tank 100 is formed by ABS injection molding, and the liquid storage capacity of the liquid storage tank 100 is 1000 mL; the liquid pump 300 can adopt a micro water pump, and the flow rate of the liquid pump 300 when operating can be set to 0.5 L / min; the membrane tube 200 can adopt a hollow membrane tube of porous ceramic material, the tube diameter of the membrane tube 200 is 2 mm, the plurality of membrane tubes 200 are arranged in a multi-layer curtain array along a straight preset direction, the wavelength of the ultraviolet lamp 500 is set to 265±5 nm, and the ultraviolet lamp 500 adopts an ultraviolet lamp 500 array panel formed by two lamp beads in combination; the composition of the catalyst layer 430 of the catalyst plate 400 is 3nm-5nm anatase titanium oxide, and the thickness of the catalyst layer 430 is 10μm, the adsorption layer 440 can adopt a porous adsorption material, specifically, it can adopt an H-BETA type molecular sieve, the thickness of the adsorption layer 440 is 20mm, and the weight of the adsorption layer 440 is about 50g.

[0118] The liquid storage tank 100 is injected with 900 mL of pure water, and the purification device of the present application is installed at the air inlet of a ceiling-mounted air conditioner (the air volume of the air conditioner is about 650m 3 / h), and the test environment is a 30m 3 environmental chamber, and the air conditioner is turned on to supply air, and the liquid pump 300 and the ultraviolet lamp 500 are turned on.

[0119] After testing, the purification device of the present application can release 600-700mL of moisture into the air of the test environment after operating for 1h, and the residual moisture in the liquid storage tank 100 is used for bacterial culture counting, and the number of bacteria is 0cfu, while the number of bacteria sampled from the air of the test environment is about 200cfu. After injecting 1mg / m 3 of formaldehyde into the environmental chamber, the formaldehyde removal rate of the purification device is about 70% within 1h of operation; after injecting 2mg / m3of ammonia into the environmental chamber, the ammonia removal rate of the purification device is about 60% within 1h of operation.

[0120] Example Three

[0121] In the embodiment, the liquid storage tank 100 is formed by ABS injection molding, the liquid storage capacity of the liquid storage tank 100 is 1000 mL; the liquid pump 300 can adopt a micro water pump, the flow rate of the liquid pump 300 when running can be set to 0.8 L / min; the membrane tube 200 can adopt a PVDF (polyvinylidene fluoride) hollow membrane tube, the tube diameter of the membrane tube 200 is 2 mm, a plurality of membrane tubes 200 are arranged in a plurality of layers in a straight preset direction to form a curtain array, the wavelength of the ultraviolet lamp 500 is set to 265±5 nm, and the ultraviolet lamp 500 adopts an ultraviolet lamp 500 array panel formed by two lamp bead combinations; the composition of the catalyst layer 430 of the catalyst plate 400 is 3 nm-5 nm anatase titanium oxide, the thickness of the catalyst layer 430 is 10 μm, the adsorption layer 440 can adopt a porous adsorption material, specifically, an H-BETA type molecular sieve can be adopted, the thickness of the adsorption layer 440 is 20 mm, and the weight of the adsorption layer 440 is about 50 g.

[0122] The liquid storage tank 100 is injected with 900 mL of 2% concentration hydrogen peroxide, the purification device of the embodiment is installed at the air inlet of a hanging machine air conditioner (the air volume of the air conditioner is about 650 m 3 / h), the test environment is a 30 m 3 environmental cabin, the microbial aerosol is released into the test environment, and the plate sampling is performed, the air conditioner is turned on to supply air, and the liquid pump 300 and the ultraviolet lamp 500 are turned on.

[0123] After testing, the plate sampling in the test environment is performed after the purification device of the embodiment runs for 1 h, and the analysis shows that the 1 h killing rate of microorganisms such as Escherichia coli, Staphylococcus albus, and Staphylococcus aureus is more than 99%. After the ultraviolet lamp 500 is turned on, 1 mg / m 3 of formaldehyde is injected into the test environment, the formaldehyde removal rate of the purification device is about 85% within 1 h of running; after 2 mg / m3 of formaldehyde and ammonia gas is injected into the environmental cabin, the ammonia gas removal rate of the purification device is about 59% within 1 h of running.

[0124] Embodiment Four

[0125] In the embodiment, the liquid storage tank 100 is formed by PP injection molding, the liquid storage capacity of the liquid storage tank 100 is 1500 mL; the liquid pump 300 can adopt a micro water pump, the flow rate of the liquid pump 300 when running can be set to 0.5 L / min; the membrane tube 200 can adopt a PVDF (polyvinylidene fluoride) hollow membrane tube, the tube diameter of the membrane tube 200 is 1.5 mm, a plurality of membrane tubes 200 are arranged into a multi-layer curtain array along a preset straight direction, the wavelength of the ultraviolet lamp 500 is set to 265±5 nm, and the ultraviolet lamp 500 adopts an ultraviolet lamp 500 array panel composed of six lamp bead combinations; the composition of the catalyst layer 430 of the catalyst plate 400 is 3 nm-5 nm anatase titanium oxide, and the thickness of the catalyst layer 430 is 10 μm, the adsorption layer 440 can adopt a porous adsorption material, and specifically can adopt ZSM-5 molecular sieve, Beta molecular sieve and activated carbon mixed and pressed according to a ratio of 1:1:1, the thickness of the adsorption layer 440 is 18 mm, and the weight of the adsorption layer 440 is about 40 g.

[0126] The absorption liquid 900 mL is injected into the liquid storage tank 100, the specific composition of the absorption liquid is a mixed solution of 1% hydrogen peroxide, 1% acid-base buffer (citric acid+ sodium carbonate+ glycine) and 0.3% surfactant (polyether type), the purification device of the embodiment is installed at the air inlet of a ceiling-mounted air conditioner (the air volume of the air conditioner is about 650 m 3 / h), the test environment is a 30 m 3 environment cabin, various odor pollutants are released into the test environment, specifically including formaldehyde, ammonia, ethanol and toluene, the air conditioner is turned on to supply air, and the liquid pump 300 and the ultraviolet lamp 500 are turned on.

[0127] After testing, the purification device of the embodiment can release 700 ml-800 ml of moisture into the test environment after running for 1 h, the air in the test environment is sampled, and the 1 h killing rate of microorganisms such as Escherichia coli, Staphylococcus albus and Staphylococcus aureus is all above 99%. Within 20 min of turning on the ultraviolet lamp 500, the formaldehyde removal rate is about 95%; within 30 min, the ammonia removal rate is about 95%; within 30 min, the ethanol removal rate is about 95%; and within 1 h, the toluene removal rate is about 95%.

[0128] Embodiment five

[0129] Based on the above purification device, the application also proposes an air conditioner comprising the above purification device. In this way, the purification device can filter and purify the gas blown out by the air conditioner, so as to improve the air quality in the environment.

[0130] Specifically, the membrane tube 200 in the purification device can be arranged at the air outlet side or the air inlet side of the air conditioner. When the membrane tube 200 is arranged at the air inlet side of the air conditioner, the purification device can purify the gas sucked by the air conditioner. When the purification device is arranged at the air outlet side of the air conditioner, the purification device can purify the gas blown by the air conditioner.

[0131] Embodiment six

[0132] With reference to Figure 6 Based on the above purification device, the embodiment of the present application further proposes a purification method, which comprises the following steps:

[0133] The liquid pump 300 is used to input the absorbent liquid in the liquid storage tank 100 into the membrane tube 200, and the liquid pressure of the absorbent liquid in the membrane tube 200 is not greater than the resultant force of the gas pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so as to absorb the pollutants in the gas outside the membrane tube 200 into the absorbent liquid in the membrane tube 200;

[0134] The absorbent liquid flowing through the membrane tube 200 is pumped into the liquid storage tank 100, and the pollutants in the absorbent liquid are purified by the ultraviolet lamp 500 and the catalyst plate 400;

[0135] Alternatively, the liquid pump 300 is used to input the absorbent liquid in the liquid storage tank 100 into the membrane tube 200, and the liquid pressure of the absorbent liquid in the membrane tube 200 is greater than the resultant force of the gas pressure outside the membrane tube 200 and the transmembrane resistance of the membrane tube 200, so as to seep the absorbent liquid in the membrane tube 200 out of the membrane tube 200. In this way, the purpose of humidifying the gas outside the membrane tube 200 can also be achieved.

[0136] Of course, it should be understood that the purification device of the present application can also use other power devices to collect and return the absorbent liquid seeping out of the membrane tube 200 to the liquid storage tank 100. Specifically, a plurality of membrane tubes 200 of the present application can be arranged in a box structure. In this way, the absorbent liquid on the surface of the membrane tube 200 can be concentrated in the box structure under the action of gravity. The box structure can be input into the liquid storage tank 100 by an additional power device, so as to achieve the purpose of fully utilizing the absorbent liquid and preventing the waste of the absorbent liquid.

[0137] Embodiment seven

[0138] With reference to Figure 7 Based on the above purification device, the embodiment of the present application further proposes a purification method, which comprises the following steps:

[0139] The cleaning liquid is injected into the liquid storage tank 100, the absorbent liquid in the liquid storage tank 100 is input into the membrane tube 200 by the liquid pump 300, the cleaning liquid flowing in the membrane tube 200 can absorb the residual pollutants in the membrane tube 200, the cleaning liquid in the membrane tube 200 is input into the liquid storage tank 100, and the pollutants absorbed in the cleaning liquid are purified by the ultraviolet lamp 500 and the catalyst plate 400; finally, the cleaning liquid in the liquid storage tank 100 is removed to complete the cleaning of the purification device.

[0140] Specifically, the cleaning liquid can be a 0.2-4% concentration hydrogen peroxide solution or pure water, the liquid injection port cover is covered, the cleaning liquid is circulated and flows between the membrane tube 200 and the liquid storage tank 100 for 0.5-1h under the condition that no air supply equipment is used to apply air pressure to the membrane tube 200, then the liquid pump 300 and the ultraviolet lamp 500 are turned off, the liquid in the liquid storage tank 100 and the membrane tube 200 is poured out, and the cleaning of the circulating pipeline between the liquid storage tank 100 and the membrane tube 200 is completed. The outer surface of the membrane tube 200 can be directly washed by the cleaning liquid to complete the cleaning.

[0141] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

Claims

1. A purification device, characterized in that: include: a liquid storage tank (100) storing an absorption liquid; and The membrane tube (200) has a liquid inlet end (210) and a liquid outlet end (220), wherein the liquid inlet end (210) is in communication with the liquid storage tank (100) so that the absorption liquid in the liquid storage tank (100) can be input into the membrane tube (200), and a membrane hole (230) is provided on the surface of the membrane tube (200); By adjusting the hydraulic pressure of the absorption liquid input into the membrane tube (200), the purification device can be made to have a first state. In the first state, the hydraulic pressure of the absorption liquid in the membrane tube (200) is not greater than the combined force of the air pressure outside the membrane tube (200) and the transmembrane resistance of the membrane tube (200), so that pollutants in the gas outside the membrane tube (200) can be absorbed by the absorption liquid in the membrane tube (200) through the membrane pores (230).

2. The purification device according to claim 1, characterized in that By adjusting the hydraulic pressure of the absorption liquid input into the membrane tube (200), the purification device can also have a second state. In the second state, the hydraulic pressure of the absorption liquid in the membrane tube (200) is greater than the combined force of the air pressure outside the membrane tube (200) and the transmembrane resistance of the membrane tube (200), and the purification device can switch between the first state and the second state.

3. The purification device according to claim 2, characterized in that In the first state, the absorption liquid includes at least one of a hydrogen peroxide solution with a concentration of 0-10%, a hypochlorous acid solution with a concentration of 0-1%, an acid-base buffer solution with a concentration of 0.1-3%, and a surfactant solution with a concentration of 0.01%-0.5%; In the second state, the absorption liquid includes at least one of water, a hydrogen peroxide solution with a concentration of 0-10%, a hypochlorous acid solution with a concentration of 0-1%, an acid-base buffer solution with a concentration of 0.1-3%, and a surfactant solution with a concentration of 0.01%-0.5%.

4. The purification device according to any one of claims 1 to 3, characterized in that: The height of the liquid inlet end (210) is higher than that of the liquid outlet end (220).

5. The purification device according to claim 4, characterized in that The purification device further comprises a liquid pump (300), which is arranged in the liquid storage tank (100) or the membrane tube (200). The liquid pump (300) can pump the absorption liquid in the liquid storage tank (100) into the membrane tube (200) through the liquid inlet end (210), and return the absorption liquid to the liquid storage tank (100) through the liquid outlet end (220).

6. The purification device according to claim 5, characterized in that The purification device further comprises a catalyst plate (400), and the catalyst plate (400) is arranged in the liquid storage tank (100).

7. The purification device according to claim 6, characterized in that The catalyst plate (400) is erected on the bottom wall of the liquid storage tank (100), a plurality of second through holes (410) are opened on the catalyst plate (400), and the liquid inlet of the liquid pump (300) and the liquid outlet (220) are located on opposite sides of the catalyst plate (400).

8. The purification device according to claim 7, characterized in that The purification device further comprises an ultraviolet lamp (500), and the ultraviolet lamp (500) is arranged in the liquid storage tank (100).

9. The purification device according to claim 8, characterized in that The liquid storage tank (100) has a mounting side wall (110) connected to the liquid outlet end (220); the catalyst plate (400) is arranged on a side of the bottom wall of the liquid storage tank (100) adjacent to the mounting side wall (110), and the catalyst plate (400) is spaced apart from the mounting side wall (110); the catalyst plate (400) includes a photocatalyst layer (430); and the ultraviolet lamp (500) is arranged on the mounting side wall (110) and opposite to the photocatalyst layer (430).

10. The purification device according to claim 9, characterized in that The catalyst plate (400) further includes an adsorption layer (440), and the adsorption layer (440) is connected to the photocatalyst layer (430).

11. The purification device according to claim 1 or 2, characterized in that: There are multiple membrane tubes (200), and the multiple membrane tubes (200) are arranged at intervals along a preset direction.

12. The purification device according to claim 11, characterized in that The purification device further comprises an air induction portion, wherein the air outlet direction of the air induction portion is toward the membrane tube (200) and the gap between adjacent membrane tubes (200).

13. An air conditioner, characterized in that: Comprising the purification device according to any one of claims 1 to 12.

14. The air conditioner according to claim 13, characterized in that The membrane tube (200) is arranged in the air conditioner, and the membrane tube (200) is located on the air inlet side or the air outlet side of the air conditioner.

15. A purification method, based on the purification device according to any one of claims 8 to 10, characterized in that: The purification method comprises: The absorption liquid in the liquid storage tank (100) is input into the membrane tube (200) through the liquid pump (300), and the hydraulic pressure of the absorption liquid in the membrane tube (200) is made not greater than the combined force of the air pressure outside the membrane tube (200) and the transmembrane resistance of the membrane tube (200), so as to absorb pollutants in the gas outside the membrane tube (200) into the absorption liquid in the membrane tube (200); The absorption liquid flowing through the membrane tube (200) is pumped into the liquid storage tank (100), and the pollutants in the absorption liquid are purified by the ultraviolet lamp (500) and the catalyst plate (400); Alternatively, the absorption liquid in the liquid storage tank (100) is pumped into the membrane tube (200) by the liquid pump (300), and the absorption liquid hydraulic pressure in the membrane tube (200) is greater than the combined force of the air pressure outside the membrane tube (200) and the transmembrane resistance of the membrane tube (200), so that the absorption liquid in the membrane tube (200) seeps out of the membrane tube (200).

16. A cleaning method, based on the purification device according to any one of claims 8 to 10, characterized in that: The cleaning method comprises: A cleaning liquid is injected into the liquid storage tank (100), and the absorption liquid in the liquid storage tank (100) is input into the membrane tube (200) through the liquid pump (300). The cleaning liquid in the membrane tube (200) is input into the liquid storage tank (100), and the pollutants absorbed in the cleaning liquid are purified by the ultraviolet lamp (500) and the catalyst plate (400); The cleaning liquid in the liquid storage tank (100) and the membrane tube (200) is removed.

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