Water curtain structure and oil fume purifier

Abstract

The application provides a water curtain structure and an oil fume purifier, and belongs to the technical field of purification devices. The water curtain structure comprises a container with a top opening and a hole plate connected to one side of the opening edge. The container is provided with an infusion port. The hole plate extends downwardly and obliquely from one end connected to the container to the other end away from the container, so that the liquid overflowing from the container to the hole plate can flow on the hole plate and drip from the through holes of the hole plate to form a water curtain. The application also provides an oil fume purifier comprising the water curtain structure. The water curtain structure and the oil fume purifier provided by the application can make the liquid in the container overflow to the hole plate naturally and make the hole plate extend downwardly and obliquely, so that the side of the hole plate far away from the container can also be distributed with sufficient liquid, the liquid amount at each position of the hole plate is relatively uniform, the water curtain formed by the water curtain structure is more uniform, and the purification effect of the oil fume purifier is improved.

Description

Technical Field

[0001] This invention belongs to the field of purification device technology, and more specifically, relates to a water curtain structure and an oil fume purifier. Background Technology

[0002] A kitchen fume purifier is a device that uses physical and chemical methods to treat kitchen fumes, primarily for purifying and controlling low-altitude emissions of kitchen fumes. In existing technologies, some kitchen fume purifiers employ a water curtain to initially adsorb oil mist from the fumes.

[0003] However, the water curtain formed by existing fume purifiers is uneven, resulting in poor initial purification effect of the fume purifier. Summary of the Invention

[0004] This invention provides a water curtain structure and an oil fume purifier to solve the technical problem of uneven water curtain formation in existing oil fume purifiers.

[0005] To achieve the above objectives, the present invention provides a water curtain structure, which includes a container with a top opening and an orifice plate connected to one side of the opening edge. The container is provided with an inlet, and the orifice plate extends downward at an angle from one end connected to the container to the other end away from the container. Liquid injected into the container through the inlet can overflow from the opening and flow onto the orifice plate to drip from the through holes of the orifice plate to form a water curtain.

[0006] Optionally, the orifice plate includes:

[0007] A steep slope section, one end of which is connected to the edge of the container's opening, is set at a first angle to the horizontal direction; and

[0008] The gentle slope section connects to the end of the steep slope section away from the container, and the gentle slope section is set at a second angle to the horizontal direction;

[0009] The first included angle is greater than the second included angle.

[0010] Optionally, multiple through holes are provided on the gentle slope section, and the multiple through holes are evenly distributed on the gentle slope section.

[0011] Optionally, the diameter of the through hole is 4mm-15mm.

[0012] Optionally, the container is equipped with a baffle that divides the container into a rapid flow zone and a transfer zone. The inlet is connected to the rapid flow zone, and the orifice plate is connected to the opening edge of the transfer zone. Liquid in the rapid flow zone can overflow the baffle and flow into the transfer zone.

[0013] Optionally, the end of the partition facing the opening is provided with a curved plate that bends toward the rapid flow zone.

[0014] Optionally, a collection tank is provided below the water curtain structure, and a water pump is installed in the collection tank. The inlet of the water pump is connected to the collection tank, and the outlet of the water pump is connected to the container.

[0015] The beneficial effects of the water curtain structure provided by the present invention are as follows: Compared with the prior art, the water curtain structure of the present invention includes a container with a top opening and an orifice plate connected to one side of the opening edge. The container is provided with an inlet, and the orifice plate extends downward at an incline from one end connected to the container to the end away from the container. Liquid injected into the container through the inlet can overflow from the opening and flow onto the orifice plate to drip from the through holes of the orifice plate to form a water curtain. In this way, compared with directly pouring liquid onto the orifice plate, the liquid in the container naturally overflows onto the orifice plate, which can make the amount of liquid at the connection between the container and the orifice plate relatively uniform. At the same time, the orifice plate extends downward at an incline, so that even the side of the orifice plate far from the container can be distributed with enough liquid, making the amount of liquid at all parts of the orifice plate relatively uniform, thereby making the water curtain formed by the water curtain structure more uniform.

[0016] According to another aspect of the present invention, an oil fume purifier is provided, comprising a housing having an air inlet and an air outlet, and the oil fume purifier further comprising a filter screen, a water curtain structure as described above, a filter module and a fan arranged sequentially along the gas flow path of the oil fume purifier.

[0017] Optionally, the filtration module includes a medium-efficiency filter layer, a high-efficiency filter layer, and an activated carbon layer arranged sequentially along the gas flow path.

[0018] Optionally, the fume purifier may also include a dehumidifier located between the water curtain structure and the filter module.

[0019] The beneficial effects of the fume purifier provided by the present invention are as follows: Compared with the prior art, the fume purifier of the present invention includes a shell with an air inlet and an air outlet, and the fume purifier also includes a filter screen, a water curtain structure as described above, a filter module and a fan arranged sequentially along the gas flow path of the fume purifier; the water curtain formed by the fume purifier is uniform and has a better purification effect on the fume. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A cross-sectional view of the water curtain structure provided in an embodiment of the present invention.

[0022] Figure 2This is a three-dimensional structural diagram of the fume purifier provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the main structure of the fume purifier provided in an embodiment of the present invention;

[0024] Figure 4 For along Figure 3 Cross-sectional view of line AA in the middle;

[0025] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0026] The following are the labeling elements in the figure:

[0027] 10. Housing; 110. Mounting cavity; 120. Air inlet; 130. Air outlet; 140. Liquid collection tank; 141. Liquid injection port; 142. Liquid outlet;

[0028] 20. Water curtain structure; 210. Orifice plate; 211. Steep slope section; 212. Gentle slope section; 220. Container; 221. Rapid flow zone; 222. Transfer zone; 223. Inlet / outlet; 230. Baffle plate; 30. Water pump; 40. Fan; 50. Filter screen;

[0029] 60. Filter module; 610. Medium-efficiency filter layer; 620. High-efficiency filter layer; 630. Activated carbon layer;

[0030] 70. Dehumidifiers. Detailed Implementation

[0031] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] As described in the background section, existing fume purifiers use a water curtain to initially adsorb oil mist from the fumes. However, the water curtain formed by existing fume purifiers is uneven, resulting in poor initial purification of the fumes.

[0036] Specifically, existing fume purifiers generally obtain a water curtain through nozzles. However, the water curtain obtained through nozzles is uneven, with water curtains near the nozzles being too dense and water curtains far away from the nozzles being too sparse. This results in numerous missed areas in the water curtain within the fume purifier.

[0037] To address the aforementioned problems, according to one aspect of this application, an embodiment of this application provides a water curtain structure 20, which can be referred to in conjunction with the above. Figures 1 to 5 The water curtain structure 20 includes a container 220 with a top opening and an orifice plate 210 connected to one side of the opening edge. The container 220 is provided with an inlet 223. The orifice plate 210 extends downward at an angle from one end connected to the container 220 to the end away from the container 220. Liquid injected into the container 220 through the inlet 223 can overflow from the opening and flow onto the orifice plate 210 to drip from the through holes of the orifice plate 210 to form a water curtain.

[0038] The water curtain structure 20 provided in this embodiment of the invention, compared with the prior art, includes a container 220 with a top opening and a perforated plate 210 connected to one side of the opening edge. The container 220 is provided with an inlet 223. The perforated plate 210 extends downward at an incline from one end connected to the container 220 to the end away from the container 220. Liquid injected into the container 220 through the inlet 223 can overflow from the opening and flow onto the perforated plate 210, dripping from the through holes of the perforated plate 210 to form a water curtain. In this way, compared with directly pouring liquid onto the perforated plate 210, the liquid in the container 220 naturally overflows onto the perforated plate 210, which can make the amount of liquid at the connection between the container 220 and the perforated plate 210 relatively uniformly distributed. At the same time, the perforated plate 210 extends downward at an incline, so that even the side of the perforated plate 210 that is far from the container 220 can be distributed with sufficient liquid, making the amount of liquid at all parts of the perforated plate 210 relatively uniform, thereby making the water curtain formed by the water curtain structure 20 more uniform.

[0039] It should be noted that the liquid mentioned above can be pure water or a chemical solvent. When there is little oil fume, pure water is sufficient to meet the purification needs; while when there is a lot of oil fume, chemical reagents can be used to achieve a better purification effect.

[0040] It is also understandable that chemical agents, in addition to purifying cooking fumes, can also remove odors from cooking fumes to some extent.

[0041] The specific liquid to be selected depends on actual needs and is not a single, fixed choice.

[0042] It should also be noted that the water curtain purifies the fumes through contact filtration. The water curtain structure 20 of this invention forms a relatively uniform water curtain that can come into relatively thorough contact with the fumes, and can adsorb more than 80% of the large oil mist particles. At the same time, the fumes in the kitchen also have a certain temperature. The water curtain structure 20 of this invention forms a relatively uniform water curtain that can better cool down the fumes, with a temperature reduction of more than 30%.

[0043] In one embodiment, see Figure 1 The orifice plate 210 includes a steep slope section 211 and a gentle slope section 212. One end of the steep slope section 211 is connected to the opening edge of the container 220, and the steep slope section 211 is set at a first angle α with the horizontal direction. The gentle slope section 212 is connected to the end of the steep slope section 211 away from the container 220, and the gentle slope section 212 is set at a second angle β with the horizontal direction. The first angle α is greater than the second angle β.

[0044] With the above configuration, when the liquid in container 220 overflows into orifice plate 210, the liquid first enters the steep slope section 211, which is set at a large first angle α with the horizontal direction. The liquid can obtain sufficient flow velocity in the steep slope section 211 so that the liquid with sufficient flow velocity can flow a sufficient distance on the gentle slope section 212 to balance the water flow at various points on orifice plate 210, making the water curtain formed by orifice plate 210 relatively uniform. Meanwhile, the second angle β between the gentle slope section 212 and the horizontal direction is relatively small, and the flow velocity of the liquid on the gentle slope section 212 decreases so that more liquid can drip from the through holes of orifice plate 210, and the flow rate of the water curtain formed is larger.

[0045] In one specific embodiment, please refer to Figure 1 Multiple through holes are provided on the gentle slope section 212, and the multiple through holes are evenly distributed on the gentle slope section 212.

[0046] Thus, the through holes are evenly distributed on the gentle slope section 212, the liquid flow velocity on the gentle slope section 212 is lower, and the flow rate of the water curtain formed is larger.

[0047] It is understandable that through holes can also be provided on the steep slope section 211. It is only necessary to adjust the first angle α between the steep slope section 211 and the horizontal direction so as not to affect the total amount of liquid flowing to the gentle slope section 212 per unit time.

[0048] In a more specific embodiment, the diameter of the through hole is 4mm-15mm.

[0049] Specifically, different through-hole diameters result in different water curtain flow rates and varying purification effects on cooking fumes. The diameter of the through-hole should be selected based on the application scenario and is not a single, fixed requirement.

[0050] In some embodiments, please refer to the following: Figure 1 , Figure 4 and Figure 5 The container 220 is provided with a partition 230, which divides the container 220 into a rapid flow zone 221 and a transfer zone 222. The inlet 223 is connected to the rapid flow zone 221. The orifice plate 210 is connected to the opening edge of the transfer zone 222. The liquid in the rapid flow zone 221 can overflow the partition 230 and flow into the transfer zone 222.

[0051] It should be noted that the liquid flowing into the container 220 from the inlet 223 has a high flow rate. Even if the container 220 is full of liquid, the liquid in the inlet 223 will still cause the liquid in the container 220 to flow to a certain extent. This will have an adverse effect on the amount of liquid overflowing from the opening edge of the container 220 to the orifice plate 210. The amount of liquid overflowing at various locations where the opening edge of the container 220 connects with the orifice plate 210 will be uneven.

[0052] With the above configuration, the container 220 is equipped with a baffle 230, which divides the container 220 into a rapid flow zone 221 and a transfer zone 222. The inlet 223 is connected to the rapid flow zone 221, so the liquid will first fill the rapid flow zone 221. Then the liquid in the rapid flow zone 221 overflows through the baffle 230 and flows into the transfer zone 222, making the liquid in the transfer zone 222 relatively calm. After the transfer zone 222 is filled with liquid, the liquid overflows from the transfer zone 222 onto the orifice plate 210, so that the amount of liquid overflow at each position at the connection between the opening edge of the container 220 and the orifice plate 210 in the transfer zone 222 is relatively uniform.

[0053] It is understandable that after the liquid in the rapid flow zone 221 is full, it first overflows through the baffle 230 and flows into the transfer zone 222. That is, except for the lower wall of the baffle 230, the other three walls of the rapid flow zone 221 are all higher than the height of the baffle 230.

[0054] In one specific embodiment, please refer to the following: Figure 1 , Figure 4 and Figure 5The end of the partition 230 facing the opening is provided with a curved plate that bends toward the rapid flow zone 221.

[0055] Thus, the end of the partition 230 facing the opening is provided with a curved plate that bends toward the rapid flow zone 221. Since the liquid flow velocity in the rapid flow zone 221 is relatively high, the curved plate can reduce the liquid flow velocity near the curved plate in the rapid flow zone 221 to a certain extent.

[0056] Specifically, a curved plate refers to a plate that is curved relative to the partition 230. The curved plate itself can be a straight plate, a C-shaped plate, or a pleated plate, which is not the only limitation here.

[0057] Furthermore, the included angle between the bent plate and the partition 230 is 15°-170°. The specific included angle is selected according to the actual application scenario and is not limited here.

[0058] In other embodiments, please refer to [the relevant documentation]. Figure 1 and Figure 4 Below the water curtain structure 20, there is a liquid collection tank 140. A water pump 30 is installed in the liquid collection tank 140. The inlet of the water pump 30 is connected to the liquid collection tank 140, and the outlet of the water pump 30 is connected to the container 220.

[0059] In this way, the water curtain formed by the orifice plate 210 will drip into the collection tank 140, and the water pump 30 in the collection tank 140 will then transport the liquid in the collection tank 140 to the container 220, realizing the recycling of the liquid and saving costs.

[0060] Understandably, in actual use, the user first adds liquid to the collection tank 140, and then pumps the liquid into the container 220 through the water pump 30. The liquid in the container 220 overflows onto the orifice plate 210 to form a water curtain, and the water curtain drips back into the collection tank 140, thus realizing the recycling of the liquid.

[0061] It should be noted that after the liquid has been recycled for a certain period of time, the water quality of the liquid will decrease, and its purification effect on oil fumes will also weaken.

[0062] In other embodiments, please refer to the following: Figures 1 to 4 The bottom of the collection tank 140 is also provided with a liquid outlet 142, which is connected to a pipe so that when the liquid quality in the collection tank 140 drops to a certain level, the liquid with poor quality can be discharged from the collection tank 140 through the pipe of the liquid outlet 142.

[0063] Understandably, the bottom of the liquid collection tank 140 is also provided with a liquid injection port 141, which is connected to a pipe.

[0064] Thus, when liquid needs to be added to the collection tank 140, the valve of the pipe connected to the injection port 141 can be opened to easily inject the liquid into the collection tank 140.

[0065] In other embodiments, a water quality monitor is also installed in the collection tank 140. The water quality monitor is electrically connected to an external controller. The valves of the pipes connected to the outlet 142 and the injection port 141 are all solenoid valves. The solenoid valves are electrically connected to the controller. The water pump 30 is electrically connected to the controller.

[0066] Among them, the solenoid valve of the pipe connected to the outlet 142 is the outlet solenoid valve, and the solenoid valve of the pipe connected to the injection port 141 is the injection solenoid valve. In the following text, they will be referred to as outlet solenoid valve and injection solenoid valve, and will not be described again.

[0067] Thus, when the water quality monitor detects that the liquid quality in the collection tank 140 has dropped to the calibrated value, the controller first shuts off the water pump 30; then, the controller controls the outlet solenoid valve to open, discharging the poor-quality liquid from the collection tank 140. When the water quality monitor detects that the liquid in the collection tank 140 has been emptied, the controller controls the outlet solenoid valve to close; then, the controller controls the outlet solenoid valve to open, injecting new liquid into the collection tank 140; finally, the controller controls the water pump 30 to start, continuing to form a water curtain.

[0068] In other embodiments, after the liquid with poor water quality in the collection tank 140 is drained and the outlet solenoid valve is closed, the controller can also control the injection solenoid valve to inject a small amount of liquid into the collection tank 140. Then, the controller controls the water pump 30 to start and circulate the liquid internally. It can be understood that the liquid circulation at this time is to clean the residual oil on the container 220 and the orifice plate 210. After the water pump 30 has been running for a certain period of time, the controller controls the water pump 30 to stop and controls the outlet solenoid valve to open, draining the liquid in the collection tank 140 and completing the cleaning work.

[0069] It is understandable that there are two injection ports 141. The liquids injected into the two injection ports 141 are liquids used to form a water curtain and liquids used to clean the water curtain structure 20, respectively. The specific type of liquid can be selected according to actual needs and is not limited here.

[0070] According to another aspect of the present invention, embodiments of the present invention also provide an oil fume purifier, which can be referred to in conjunction with the invention. Figures 1 to 5 The fume purifier includes a housing 10 having an air inlet 120 and an air outlet 130. The fume purifier also includes a filter screen 50 arranged sequentially along the gas flow path of the fume purifier, a water curtain structure 20 as claimed in any one of claims 1-7, a filter module 60, and a fan 40.

[0071] Compared with the prior art, the fume purifier provided in this embodiment of the invention includes a housing 10 with an air inlet 120 and an air outlet 130. The fume purifier also includes a filter screen 50, a water curtain structure 20 as described above, a filter module 60 and a fan 40 arranged sequentially along the gas flow path of the fume purifier. The water curtain formed by the fume purifier is uniform and has a better purification effect on the fume.

[0072] It should be noted that the gas flow path described above is provided in the original text. Figure 1 and Figure 4 The path x in the text.

[0073] It should also be noted that an installation cavity 110 is provided between the air inlet 120 and the air outlet 130 of the housing 10, and the aforementioned water curtain structure 20, filter module 60 and fan 40 are all installed in the installation cavity 110.

[0074] In one embodiment, see Figure 4 The filtration module 60 includes a medium-efficiency filter layer 610, a high-efficiency filter layer 620, and an activated carbon layer 630 arranged sequentially along the gas flow path.

[0075] Medium-efficiency filters utilize inertial impaction, interception, and electrostatic methods to cause particulate matter and water mist to accumulate on a fixed surface, thus achieving purification. Larger particles, with stronger inertial forces, cannot pass through the filter media when encountering obstacles. Smaller particles move randomly in diffusion, and their micro-molecules are bound together by forces, preventing both particles and water mist from passing through the filter media, thus achieving a purification effect. This system can purify 98% of oil fume particles larger than 2.5μm-5μm.

[0076] Among them, the high-efficiency filter uses sieving effect, interception effect, diffusion effect, inertial effect, etc., and can purify 99.9% of particulate matter smaller than 2.5um in oil fumes.

[0077] The activated carbon layer 630 utilizes high-iodine adsorption honeycomb activated carbon. Through deep activation and micropore technology, its specific surface area reaches over 1500 m² / g. Its rich micropore structure provides highly efficient adsorption of harmful gases such as benzene, formaldehyde, ammonia, kitchen fumes, and the pungent smell of chili peppers. While effectively removing gaseous pollutants and harmful odors from kitchen air, it also inhibits airborne pathogens. The overall deodorization efficiency of activated carbon purification can reach over 95%.

[0078] In another embodiment, please refer to Figure 4 The fume purifier also includes a dehumidifier 70 located between the water curtain structure 20 and the filter module 60.

[0079] In this way, the dehumidifier 70 can adsorb the moisture in the oil fume that has been initially purified by the water curtain structure 20, thus preventing the oil fume with excessive moisture from affecting the filter module 60.

[0080] In other embodiments, please refer to Figure 4 A filter screen 50 is also installed at the air intake 120.

[0081] Specifically, filter 50 can remove and separate large particles of oil fumes and water mist. Filter 50 utilizes the fact that gaseous pollutants have different saturated vapor pressures at different temperatures and pressures. Under the influence of gravity, pollutants are condensed when the temperature is reduced and the pressure is changed, which can purify 70% of oil fume particles and water mist larger than 10μm.

[0082] In other embodiments, please refer to the following: Figures 2 to 4 The top and one side of the housing 10 are provided with air outlets 130.

[0083] Thus, the fan 40 provides power to the smoke exhaust system, allowing the fumes to enter the fume purifier from below the stove for purification; and the two outlets can improve the emission efficiency of the fume purifier and prevent the purified gas from accumulating near the fan 40.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A water curtain structure, characterized in that, The container includes a container with a top opening and an orifice plate connected to one side of the edge of the opening. The container is provided with an inlet. The orifice plate extends downward at an angle from one end connected to the container to the other end away from the container. Liquid injected into the container through the inlet can overflow from the opening and flow onto the orifice plate to drip from the through holes of the orifice plate to form a water curtain. The orifice plate includes: A steep slope section, one end of which is connected to the edge of the container's opening, is positioned at a first angle to the horizontal direction; and A gentle slope section is connected to the end of the steep slope section away from the container, and the gentle slope section is set at a second angle to the horizontal direction; Wherein, the first included angle is greater than the second included angle; Multiple through holes are provided on the gentle slope section, and the multiple through holes are evenly distributed on the gentle slope section; The container is equipped with a partition that divides the container into a rapid flow zone and a transfer zone. The inlet is connected to the rapid flow zone, and the orifice plate is connected to the opening edge of the transfer zone. Liquid in the rapid flow zone can overflow the partition and flow into the transfer zone. The partition is provided with a curved plate at one end facing the opening, which bends toward the rapid flow zone. The curved plate is a straight plate, a C-shaped plate, or a pleated plate, and the included angle between the curved plate and the partition is 15°-170°.

2. The water curtain structure as described in claim 1, characterized in that, The diameter of the through hole is 4mm-15mm.

3. The water curtain structure as described in claim 1 or 2, characterized in that, A collection tank is provided below the water curtain structure, and a water pump is installed in the collection tank. The inlet of the water pump is connected to the collection tank, and the outlet of the water pump is connected to the container.

4. An oil fume purifier, characterized in that, The fume purifier includes a housing with an air inlet and an air outlet, and further includes a filter screen arranged sequentially along the gas flow path of the fume purifier, a water curtain structure as described in any one of claims 1-3, a filter module, and a fan.

5. The fume purifier as described in claim 4, characterized in that, The filtration module includes a medium-efficiency filter layer, a high-efficiency filter layer, and an activated carbon layer arranged sequentially along the gas flow path.

6. The fume purifier as described in claim 4, characterized in that, The fume purifier also includes a dehumidifier located between the water curtain structure and the filter module.

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