Gas purifying device and liquid collecting member for gas purifying device

Abstract

To provide a gas cleaning device and a liquid collection member for a gas cleaning device which can effectively eliminate and collect a liquid from gas.SOLUTION: A liquid collection member 15 for a gas cleaning device includes a groove 16 as a liquid flow channel. A first line part 17 forming an outer surface of a lower part of the groove 16, and a second line part 18 and third line part 19 extending to an inside of the groove 16 from both end parts 17a, 17b of the first line part 17 respectively are formed in a cross section. The first curved line part 17, and the second curved line part 18 and third curved line part 19 on both sides form a series of continuous lines.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a gas purifying device that removes foreign matter suspended in gas, and more particularly to a wet-type gas purifying device that removes foreign matter by bringing gas into contact with liquid. [Background technology]

[0002] In painting and manufacturing sites, foreign matter such as paint powder and cutting chips from work materials float in the air as dust. In order to effectively purify gas containing such floating matter, wet dust collectors are widely used. The gas containing the foreign matter is brought into contact with a liquid such as water, and the foreign matter in the gas is captured by the liquid. In this way, the foreign matter is removed from the gas.

[0003] However, the liquid that comes into contact with the gas is blown up in a mist, and a considerable amount of liquid is contained in the gas as droplets. Therefore, it is necessary to remove the liquid contained in the gas before discharging the gas. In Patent Document 1, angles are provided at multiple locations. When the liquid comes into contact with the angles, minute particles of the liquid contained in the mist gather together and turn into larger droplets. In addition, a liquid cutter is provided to remove the liquid from the gas that contains the liquid. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-40012 A Summary of the Invention [Problem to be solved by the invention]

[0005] In wet dust removal devices, components that obstruct the flow of gas, such as the angle and liquid cutter of Patent Document 1, are placed. When such components are placed, the liquid in the gas temporarily adheres to the components as liquid drops. However, the adhered liquid is not easily collected in the liquid tank. The adhered liquid is pressed against the surface of the components, such as the angle, by the gas flow, so it is difficult for it to fall as droplets.

[0006] Furthermore, even if the liquid drops grow and break off from the surface of the angle, etc., they are lifted up again by the wind pressure and most of them return to the gas. Therefore, the liquid is not sufficiently removed from the gas, and it is difficult to recover the liquid together with the dust components. In order to fully recover the liquid, it is necessary to increase the number of stages of components such as angles, but this makes the equipment complex and expensive, and a large air blower is required to pass the gas between the many stages of angles.

[0007] An object of the present invention is to provide a gas purifying device and a liquid collecting member for a gas purifying device that can effectively remove and recover liquid from gas. [Means for solving the problem]

[0008] In order to solve the above problems, the liquid collection member for a gas purification device of the present invention has a groove that serves as a liquid flow path, and in cross section, a first line portion that forms an outer wall surface at the bottom of the groove; The groove has a second line portion and a third line portion extending from both ends of the first line portion toward the inside of the groove, the second line portion and the third line portion being smooth curves, and the first line portion and the second line portion and the third line portion on both sides thereof form a series of continuous lines. It is preferable that the first line portion is a smooth curve, and the first line portion and the second line portion and the third line portion on both sides thereof form a series of smooth continuous curves. Also, the groove can be easily manufactured by forming the groove by bending a strip-shaped plate material.

[0009] The gas purification device of the present invention is provided with a liquid collection member for a gas purification device, and includes a first chamber, a second chamber, a partition wall separating the first chamber and the second chamber, a gas inlet port provided in the first chamber, an exhaust port provided in the second chamber, a liquid tank provided below the first chamber and the second chamber, a liquid spraying member provided in the liquid tank at the boundary between the first chamber and the second chamber, and a liquid recovery member for removing liquid contained in the gas, The liquid recovery member includes a plurality of liquid collection members; the liquid collecting member has a groove which serves as a liquid flow path, and in cross section has a first line portion which forms an outer wall surface at the bottom of the groove, and a second line portion and a third line portion which extend from both ends of the first line portion toward the inside of the groove, the second line portion and the third line portion being smooth curves, and the first line portion and the second line portion and the third line portion on both sides of the first line portion form a continuous line; The first line portion of the liquid collecting member is directed to the windward side of the flow of gas that has passed through the liquid blowing member, The liquid collecting member is disposed obliquely or vertically with the groove facing upward. Effect of the Invention

[0010] The gas purifying device and the liquid collecting member for the gas purifying device of the present invention allow liquid contained in the gas to adhere to the liquid collecting member, and can be efficiently collected without diffusing the liquid back into the gas. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a cross-sectional view showing a schematic structure of the gas purification device. [Diagram 2] FIG. 3 is a view taken along the arrow A showing the arrangement of the spray nozzles. [Diagram 3] FIG. 4 is an enlarged front view showing the discharge gate plate. [Figure 4] FIG. [Diagram 5] 4 is a view taken along the arrow C showing the liquid recovery member. FIG. [Figure 6] FIG. 2 is a front view showing a first example of a liquid collecting member. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. 11 is a cross-sectional view showing a modified example of the liquid collecting member. [Figure 11] FIG. 4 is an enlarged cross-sectional view of a second line portion. [Figure 12] FIG. 11 is a front view showing a second example of the liquid collecting member. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. 11 is an enlarged cross-sectional view showing a third example of a liquid-collecting member. [Figure 16] FIG. 2 is a front view showing the appearance of the gas purifying device. [Figure 17] FIG. [Figure 18] FIG. [Figure 19] FIG. 1 is a conceptual diagram showing an example of a method for using the gas purifying device. [Figure 20] FIG. 4 is a front view showing the operation of the gas purifying device. [Figure 21] FIG. [Figure 22] 6 is a conceptual diagram showing the function of a liquid collecting member. FIG. [Figure 23] FIG. [Figure 24] FIG. 11 is a conceptual diagram showing another example of a method for using the gas purifying device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, in which: Fig. 1 is a cross-sectional view showing a schematic structure of a gas purifying device;

[0013] The gas purifying device 1 comprises a first chamber 2 and a second chamber 3 which are separated from each other. A partition wall 4 is provided between the first chamber 2 and the second chamber 3. A liquid tank 5 is provided below the first chamber 2 and the second chamber 3. A gas inlet 6 is provided in the first chamber 2, and an exhaust port 7 is provided in the second chamber 3. A spray nozzle 8 is provided in the first chamber 2 to spray liquid into the gas flowing from the gas inlet 6 to the liquid tank 5.

[0014] Liquid is poured into the liquid tank 5 up to a reference height during use. The partition wall 4 is provided up to close to the liquid level at the reference height. A jet-out gate plate 9 is provided adjacent to the lower end of the partition wall 4. The lower end of the jet-out gate plate 9 extends below the liquid level at the reference height. Furthermore, a liquid jet-up member 10 is provided in the liquid tank at the boundary between the first chamber 2 and the second chamber 3, facing the jet-out gate plate 9.

[0015] The second chamber 3 is provided with a liquid recovery member 11, and further downstream thereof, a dehumidifying bar 12 is provided.

[0016] 2 is a view seen from the arrow A showing the arrangement of the spray nozzles. Multiple spray nozzles 8 are provided in parallel near the gas inlet 6. A strainer 13 is provided in the liquid tank 5, and liquid is supplied to the spray nozzles 8 via a liquid supply pipe 14 by a pump 32. The spray ranges of adjacent spray nozzles 8 partially overlap, so that mist is sprayed evenly onto the gas flowing from the gas inlet 6 to the liquid tank 5.

[0017] Fig. 3 is an enlarged front view of the blow-out gate plate, and Fig. 4 is a view taken along the arrow B in the same figure. The blow-out gate plate 9 is a substantially rectangular plate material, and its width is the same as that of the partition wall 4. A sawtooth-like unevenness is formed at the lower end. It is attached to the lower end of the partition wall 4, and is inclined so that the lower side faces the second chamber 3. When there is a reference height of liquid in the liquid tank 5 and no gas has yet been introduced, the lower end of the blow-out gate plate 9 is positioned so that it is located below the liquid level.

[0018] The liquid jetting member 10 is a plate-shaped member with one end curved into a round shape and the other portion being flat. The flat portion is immersed in the liquid in the liquid tank 5 and is disposed obliquely upward so as to protrude towards the second chamber 3. The curved portion is disposed so as to protrude above the liquid surface from the liquid, and faces the lower end of the jetting gate plate 9 at a specified distance.

[0019] The liquid recovery member 11 will be described in detail. 5 is a view showing the liquid recovery member as seen from the arrow C. The liquid recovery member 11 is provided with a plurality of liquid collecting members 15.

[0020] A first example of the liquid collecting member will be described. FIG. 6 is a front view of the first example of the liquid collecting member, FIG. 7 is a plan view of the same, FIG. 8 is an enlarged right side view of the same, and FIG. 9 is an enlarged cross-sectional view of the same. The liquid collecting member 15 is a rod-shaped member having a groove 16. In the cross section, a first line portion 17 that forms the main part of the groove is formed. The first line portion 17 is a line along the outer surface of the lower part of the groove. The main part of the groove is formed by this first line portion 17. This first line portion 17 is preferably a curved shape that protrudes toward the outside of the groove as in this example, but may include a straight line portion or an angular bent portion as shown in the modified example. And, when the bottom of the groove 16 is facing downward as shown in FIG. 9, the inclination of the line at both ends of the first line portion 17 is vertical. In this example, a thin band-shaped stainless steel plate is used, and the curved line along the outer surface of the plate is the first line portion 17.

[0021] A curve extending from each of both ends of the first line portion 17 toward the inside of the groove is formed. The curve extending from one end, for example, the end 17a on the left side in FIG. 9, is the second line portion 18. The curve extending from the other end, for example, the end 17b on the right side in FIG. 9, is the third line portion 19. The second line portion 18 and the third line portion 19 are curves that appear symmetrically with each other. From each of both ends 17a, 17b of the first line portion 17, they extend toward the inside of the groove and upward, reach vertices 18a, 19a, and then extend downward, forming a rounded mountain shape. The tip 18b of the second line portion 18 and the tip 19b of the third line portion 19 are separated from each other, and an opening is formed between them. The second line portion 18 and the third line portion 19 are smooth curves. At both ends 17a, 17b of the first line portion 17, the second line portion 18 and the third line portion 19 are connected so that the slope of the curve is continuous.

[0022] FIG. 10 is a cross-sectional view showing a modified example of the liquid collecting member of the first example. FIG. 10a shows a cross-section of the first modified example, FIG. 10b shows a cross-section of the second modified example, FIG. 10c shows a cross-section of the third modified example, FIG. 10d shows a cross-section of the fourth modified example, and FIG. 10e shows a cross-section of the fifth modified example. In each modified example, the entire line is not formed with a smooth curve, and some modified examples include a straight line on the bottom surface (first modified example, second modified example, fifth modified example), a sharp bent part (fourth modified example, fifth modified example), and a small depression in the center of the bottom surface (third modified example). If the lower part of the groove that serves as a liquid flow path is formed, it can be included in the first line part.

[0023] FIG. 11 is an enlarged cross-sectional view of the second line portion. At end 17a of first line portion 17, the line is vertical. Second line portion 18 also starts at a vertical incline and extends upward and inward of the groove. This curve is convex toward the outside of the groove. It extends further from apex 18a, with tip 18b pointing downward. The droplets that adhere to first line portion 17 are pushed by the wind to end 17a, and then move further along second line portion 18 to be guided into the groove.

[0024] The angle Θ from the starting point of the second line portion 18, i.e., the end portion 17a of the first line portion to the tip portion 18b of the second line portion, is greater than 90°, and the tip portion 18b faces downward, so that the droplets can be guided to a position where they can fall into the groove by gravity. The radius of curvature R is set so that the centrifugal force caused by the moving speed of the droplets is not too large. In other words, it is set so that the force that pulls the droplets away from the surface of the second line portion 18 by wind pressure or centrifugal force does not exceed the force that tries to attach the droplets to the second line portion 18.

[0025] The third line portion 19 is also symmetrical to the second line portion 18, and has the same radius of curvature R and rotation angle Θ to the tip. The space between the second line portion 18 and the third line portion 19 forms the upper part of the groove, and this space also functions as a flow path for liquid.

[0026] The second line portion 18, the first line portion 17, and the third line portion 19 form a series of continuous lines. The first line portion 17 is itself a line that is symmetrical. Therefore, the cross-sectional shape of the liquid collection member 15 is also symmetrical overall. In particular, the example in Fig. 9 is particularly preferable because the second line portion 18, the first line portion 17, and the third line portion 19 form a series of smooth continuous curves, which smoothly guides droplets into the grooves.

[0027] The liquid collecting member 15 of this example can be easily formed by bending a strip-shaped plate material such as a metal. In this example, it was formed by pressing a stainless steel plate material. By using a relatively thin plate material like this, the flow path by the groove 16 can be made large, allowing a large amount of water to pass through.

[0028] A second example of the liquid collecting member will be described. Fig. 12 is a front view showing the second example of the liquid collecting member, Fig. 13 is a plan view of the same, and Fig. 14 is an enlarged cross-sectional view of the same. The liquid collecting member 15 is a rod-shaped member having a groove 16. In this example, a first line portion 17 and a fourth line portion 20 are formed in the cross section, which are convex curves in the same direction. The first line portion 17 is a curve that protrudes outward, and the fourth line portion 20 is a curve that protrudes inward so as to enter the first line portion 17. The fourth line portion 20 forms the bottom surface of the groove 16. It is preferable that the first line portion 17 and the fourth line portion 20 are smooth curves.

[0029] The first line portion 17 and the fourth line portion 20 are connected by a smooth curve. A curve connecting the ends of the first line portion 17 and the fourth line portion 20 on the same side (for example, the ends 17a and 20a on the left side in FIG. 14) is defined as a second line portion 18. A curve connecting the ends of the first line portion 17 and the fourth line portion 20 on the other side (for example, the ends 17b and 20b on the right side in FIG. 14) is defined as a third line portion 19. The second line portion 18 and the third line portion 19 are preferably smooth curves, that is, curves that can be expressed by a differentiable function or curves with a shape that can be identified with such a function, and moreover, it is preferable that the end points of the second line portion 18 and the third line portion 19 have the same slope as the end points of the first line portion 17 or the fourth line portion 20 to which they are connected.

[0030] Further, the first line portion 17, the second line portion 18, the fourth line portion 20 and the third line portion 19 form a closed curve, which becomes the outer periphery of the cross section of the liquid collecting member 15.

[0031] The liquid collecting member 15 in this example is formed into a rod-shaped member of the same cross section by passing a material such as metal through a base. This allows it to be manufactured with accurate dimensions. Through holes 21 are provided in the length direction at the positions of the second line portion 18 and the third line portion 19, respectively, to save material and reduce weight. As described later, this liquid collecting member 15 can also be used as a dehumidifying rod, in which case the through holes 21 can be used as a passage for the refrigerant.

[0032] A third example of the liquid collecting member will now be described. FIG. 15 is a cross-sectional view showing the third example of the liquid collecting member. In this example, a thin-walled cylindrical tube is used as the material. A groove is formed by pressing the side of the cylindrical tube with a press mold or the like, resulting in an external shape similar to that of the liquid collecting member in the previous example. By using a thin-walled cylindrical tube, it can be made lighter and can be manufactured with simple equipment. When used as a dehumidifying rod, the hollow part inside can be used as a passage for the refrigerant.

[0033] In the liquid recovery member 11, the liquid collecting members 15 are provided in parallel on the same plane at regular intervals, and are arranged in a staggered pattern in multiple stages. Any of the first to third examples may be used for the liquid collecting members 15. In this example, about 18 members are arranged in parallel in each stage, and four stages are provided. The upper holding plate 22 is attached to the upper part of the partition wall 4 to fix one end of the liquid collecting member 15, and the lower holding plate 23 is installed at a position slightly above the liquid level in the liquid tank 5, so that the liquid collecting member 15 is installed diagonally or vertically. Alternatively, the lower holding plate 23 may be installed at the liquid level of the liquid tank 5 or at a position lower than the liquid level, so that the liquid flowing through the grooves is guided to the liquid in the liquid tank. The first line portion 17 of the liquid collecting member 15 faces downward and faces the jetting gate plate 9 or the liquid jetting member 10. On the other hand, the opening of the groove 16 faces the opposite side to the jet gate plate 9 and the liquid jetting member 10 , and descends away from the partition wall 4 .

[0034] The dehumidifying rod 12 is provided between the liquid recovery member 11 and the exhaust port 7. A plurality of hollow metal tubes through which a refrigerant flows are provided in parallel, and a refrigerant circulation pipe 24 is connected to each of both ends of the tubes. In this example, a hollow tube having the same cross-sectional shape as the liquid collecting member 15 of the second or third example, that is, a member having a cross-sectional shape as shown in FIG. 14 or FIG. 15, is used. Therefore, the liquid collecting member of the second example shown in FIG. 14 or the liquid collecting member of the third example shown in FIG. 15 can also be used as a dehumidifying rod. Again, the surface corresponding to the first line portion faces the liquid collecting member 11 side, that is, upwind. On the other hand, the surface corresponding to the fourth line portion faces downwind, and the groove is installed at an angle with the groove facing upward, forming a gutter. The dehumidifying rod may be installed vertically, which forms a flow path that leads water droplets in the groove downward, but it is preferable to install it at an angle as in this example. The surface is cooled by the refrigerant, and the liquid components contained in the gas that comes into contact with it are condensed on the surface, especially on the first line portion, and are removed from the air. The condensed liquid moves due to wind pressure, and when it enters the groove, it travels down along the groove and is collected in the liquid tank 5.

[0035] A supply pipe 25 is connected to supply liquid to the liquid tank 5 from outside, and a supply port 26 is provided above a reference height. A float 27 is also provided to measure the liquid level, and when the liquid level falls below the reference height, liquid is replenished through the supply port 26 to maintain the liquid level above the reference height.

[0036] Meanwhile, a drain port 28 is provided near the bottom of the liquid tank 5, and when a valve 29 is opened, the liquid at the bottom of the liquid tank 5 is drained to the outside. This allows dust and other particles that have accumulated at the bottom of the liquid tank 5 to be discharged.

[0037] Fig. 16 is a front view showing the exterior of the gas purifier, Fig. 17 is a right side view, and Fig. 18 is a plan view. The gas purifier 1 is provided inside a sealed housing, and gas passes through the housing through a gas inlet 6 in the first chamber 2 and an exhaust outlet 7 in the second chamber 3. Doors 30 and 31 are provided on the front and right side sides, respectively, to allow for inspection, cleaning of the liquid collection member 15 and dehumidification pipe 12, removal of deposits in the liquid tank 5, and the like.

[0038] FIG. 19 is a conceptual diagram showing an example of how to use the gas purifier. The work place 40 is, for example, a paint factory or a workshop where cutting is performed, where dust such as paint powder and cutting chips is generated and floats in the air. Air in the work place 40 is sent from an exhaust port 41 of the work place 40 to a gas inlet port 6 of the gas purifier 1 by a blower 43. In addition, the exhaust port 7 of the gas purifier 1 is connected to a gas inlet port 42 of the work place 40, and the air purified by the gas purifier 1 is returned to the work place 40 in a circulation type. Therefore, in this example, it is preferable to provide a dehumidification pipe 12 as shown in FIG. 1 to sufficiently remove moisture remaining in the air before circulating it.

[0039] The method of use and operation of the gas purifier will be described based on this example. Liquid tank 5 is filled with water up to a standard height. Air is sent into first chamber 2 through gas inlet 6 by operating blower 43. Water in liquid tank 5 is sprayed as mist into first chamber 2 by spray nozzle 8. The air is mixed with the mist as it travels, and some of the dust contained in the air is taken up into the water droplets.

[0040] The air travels toward the liquid tank 5 and hits the liquid surface. Figure 20 is a front view showing the operation of the gas purifier, and Figure 21 is a cross-sectional view of the same at E. The air that has reached the liquid surface flows toward the tip along the jet gate plate 9 and hits the curved surface at the tip of the liquid jetting member 10 while spraying water as droplets at the tip of the jet gate plate 9. This curved surface faces upward, and the air sprays water droplets and enters the second chamber 3. Some of the foreign matter in the air, such as dust, is taken up by the water in the liquid tank 5 and remains in the liquid tank 5, but the remaining foreign matter is taken up into the water droplets.

[0041] The air that has passed through the liquid-spouting member 10 and has been sprayed up together with the water droplets passes through the liquid recovery member 11. Figure 22 is a conceptual diagram showing the function of the liquid-collecting member, and Figure 23 is a cross-sectional view of the same. The air containing the water droplets advances while coming into contact with the numerous liquid-collecting members 15. As the first line portions 17 face the windward side, the wind hits the first line portions 17 strongly. The water droplets contained in the air adhere to these first line portions 17. In addition, dust that remains in the air without coming into contact with the water when passing through the first chamber 2 and the liquid tank 5 comes into contact with the water droplets adhering to the surface of the liquid-collecting member 15 and is taken up into the water droplets.

[0042] The attached water droplets are subjected to wind pressure and move along the first line portion 17 toward its end. They are then guided into the groove 16 via the second line portion 18 or the third line portion 19. Because the outer periphery of the liquid collecting member 15 is composed of a continuous smooth curve, the water droplets move smoothly from the first line portion 17 to the groove 16. The attached water droplets are guided by the wind pressure to the groove 16 on the leeward side, and are unlikely to return to the air during the movement.

[0043] The grooves 16 face downwind and are hardly subjected to wind pressure. Water droplets that enter the grooves 16 pass through the grooves 16 and descend due to gravity. That is, the liquid collection member 15 acts as a gutter that collects water droplets in the air by attaching them to it and directs them to the liquid tank 5 via the grooves 16. In particular, when the liquid collection member of the first example shown in FIG. 9 is used, the cross-sectional area of ​​the grooves 16 is large and a large amount of liquid can pass through. Therefore, even if a large amount of liquid droplets is sprayed, the liquid is unlikely to overflow the grooves and is collected in the liquid tank 5 without scattering back into the gas.

[0044] The liquid collecting member 15 is supported by an upper holding plate 22 and a lower holding plate 23. The upper holding plate 22 and the lower holding plate 23 are formed with holes for passing the liquid collecting member 15 in the number equal to the number of the liquid collecting members 15. A protrusion 15a acting as a stopper is provided on the first line portion at the lower end of the liquid collecting member 15. The liquid collecting member 15 can be easily installed by passing the upper end of the liquid collecting member 15 through the hole in the upper holding plate 22 and then passing the lower end through the hole in the lower holding plate 23. The protrusion 15a functions as a stopper and prevents the liquid collecting member 15 from descending, so it can be installed without using screws or the like. It is also easy to remove and replace. The hole in the upper holding plate 22 has almost the same shape as the outer circumference of the liquid collecting member 15, so there is almost no gap when it is installed. Therefore, almost no air passes through. The holes in the lower retaining plate 23 are aligned along the first line portion 17 of the liquid collecting member 15 at the bottom, but are wide open at the top so as not to block the grooves 16 of the liquid collecting member 15. This wide upper part of the hole serves as the liquid passing area. The moisture that comes down through the grooves 16 passes through the lower retaining plate 23 and falls into the liquid tank 5. In this way, the water is collected in the liquid tank 5 together with foreign matter such as dust contained in the water droplets.

[0045] The air that has passed through the liquid recovery member 11 is purified by removing dust particles and moisture. This may be discharged from the exhaust port 7, but in this example, a dehumidification pipe 12 is provided between the liquid recovery member 11 and the exhaust port 7. The dehumidification pipe 12 is cooled by a refrigerant passing through it. When the air passes through the dehumidification pipe 12, the water vapor contained in the air condenses on the surface of the dehumidification pipe 12 and is pushed by the wind and moves to the groove. In this way, the air is discharged from the exhaust port 7 after reducing the humidity, and is returned to the work area 40. A filter may be inserted at the entrance of the exhaust port 7 or on the way from the exhaust port 7 to the gas inlet 42 of the work area 40 to improve purification. Since there is already little foreign matter remaining in the air, the filter is less likely to become dirty and has a long life.

[0046] Foreign matter such as dust removed from the gas by the gas purifying apparatus 1 accumulates in the liquid tank 5. Components that do not dissolve in the liquid precipitate and accumulate at the bottom of the liquid tank 5. The valve may be opened continuously or periodically to discharge the deposits. In addition, the gas purifying apparatus 1 may be periodically stopped to scrape out the deposits from the liquid tank 5 and remove them through the door 30 when inspecting or maintaining the gas purifying apparatus 1.

[0047] Fig. 24 is a conceptual diagram showing another example of how to use the gas purifier. An exhaust port 51 of a work area 50 and a gas inlet port 6 of the gas purifier 1 are connected. The work area 50 is a place where paint powder and dust are likely to be generated, such as a paint factory. The gas purifier 1 of this example may be the same as that shown in Fig. 1, but the refrigerant circulation pipe 24 may be omitted. The work area 50 and the gas purifier 1 are provided inside a building 60.

[0048] Air containing foreign matter generated in the work area 50 is introduced into the gas purifying device 1 through the gas inlet 6. Purification by the gas purifying device 1 is similar to that in the previous example. The purified air is exhausted from the gas purifying device 1 through the exhaust port 7. In this example, this air is not returned to the work area 50, but is exhausted outside the building 60 through the exhaust pipe 52.

[0049] Outside the building 60, the exhaust pipe 52 extends upward along the wall, reaches roof height, and then has a bent portion that bends toward the roof. The tip of the exhaust pipe faces the roof of the building 60. Although the air that has passed through the gas purifying device 1 has been purified, avoiding direct release of the purified air toward the outside leaves a good impression and contributes to good relations with the neighborhood.

[0050] Although the above describes the purification of air in paint factories and workshops, this invention can also be applied to clean rooms in precision equipment manufacturing factories, sterile rooms in hospitals, and air purification in event venues. In this case, it is preferable to install a filter downstream of the dehumidifying rod. Also, liquids other than water can be used. For example, hypochlorous acid water can be used as a virus countermeasure to destroy viruses. [Explanation of symbols]

[0051] 1. Gas purifier 2.Room 1 3.Second room 4. Partition wall 5.Liquid tank 6.Gas inlet 7. Exhaust port 8. Spray nozzle 9. Exhaust gate plate 10.Liquid-squirting components 11. Liquid recovery member 12.Dehumidification pipe 13. Strainer 14.Liquid supply pipe 15. Liquid collection member 16. Groove 17.First line section 18.Second line section 19.Third Line Department 20. 4th line section 21.Through hole 22. Upper retaining plate 23. Lower retaining plate 24. Refrigerant circulation pipe 25. Supply pipe 26. Supply outlet 27. Float 28.Outlet 29. Valve 30. Door 31. Door 32. Pump 40. Workshop 41. Exhaust vent 42.Gas inlet 43. Blower 50. Workshop 51. Exhaust 52. Exhaust pipe 60. Building

Claims

1. A groove is provided to serve as a liquid flow path, a first line portion that, in cross section, forms an outer surface of a lower portion of the groove; A liquid collecting member for an air purification device, which has second and third line portions extending from both ends of the first line portion toward the inside of the groove, the second and third line portions being smooth curves, and the first line portion and the second and third line portions on either side of it forming a series of continuous lines.

2. 2. The liquid collecting member for a gas purifying device according to claim 1, wherein the first line portion is a smooth curve, and the first line portion and the second and third line portions on both sides of the first line portion form a series of smooth continuous curves.

3. 3. The liquid collecting member for a gas purifying device according to claim 1 or 2, which is formed by bending a strip-shaped plate material.

4. the device has a first chamber, a second chamber, a partition wall separating the first chamber and the second chamber, a gas inlet port provided in the first chamber, an exhaust port provided in the second chamber, a liquid tank provided below the first chamber and the second chamber, a liquid spraying member provided in the liquid tank at the boundary between the first chamber and the second chamber, and a liquid recovery member for removing liquid contained in the gas; The liquid recovery member includes a plurality of liquid collection members; the liquid collecting member has a groove which serves as a liquid flow path, and in cross section has a first line portion which forms the outer surface of the lower part of the groove, and second and third line portions which extend from both ends of the first line portion towards the inside of the groove, the second and third line portions being smooth curves, and the first line portion and the second and third line portions on both sides of the first line portion form a continuous line; The first line portion of the liquid collecting member is directed to the windward side of the flow of gas that has passed through the liquid blowing member, and the second line portion and the third line portion are directed to the leeward side, An air purifying device in which the liquid collecting member is installed obliquely or vertically with the groove facing upward.

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