Air duct assembly and cleaning equipment

Abstract

The utility model belongs to the technical field of electric appliances, and discloses an air duct assembly and cleaning equipment. The air duct assembly comprises a shell and a fan, the shell is provided with an air extraction opening, an air supply opening and a circulating air duct communicated between the air extraction opening and the air supply opening, the fan is connected to the shell and located on a flowing path of fluid in the circulating air duct so as to promote airflow to flow to the air supply opening from the air extraction opening through the circulating air duct, and the air extraction opening and the air supply opening are both used for being communicated with the inner container; a plurality of condensation parts are vertically arranged in the circulating air duct in the flowing direction of air flow, a plurality of rough hydrophilic convex parts and a plurality of smooth hydrophobic concave parts are arranged on the surface, making contact with the air flow, of each condensation part, and the convex parts and the concave parts on each condensation part are distributed in a staggered mode so as to integrally form a condensation face of the condensation part. The cleaning equipment comprises the air duct assembly. According to the air duct assembly and the cleaning equipment, the dehumidification efficiency can be improved, and the cost of the air duct assembly and the cleaning equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to an air duct component and a cleaning device. Background Art

[0002] A dishwasher is a device that can automatically wash and dry dishes, which can greatly free the user's hands and improve the user's quality of life.

[0003] During the drying process of dishwashing machines, the humidity and temperature inside the inner tank are both at high levels. To improve drying efficiency, a dishwasher is provided in the prior art. The air duct assembly is provided on the outside of the inner tank. The air duct assembly includes a circulating air duct and a fan. The air intake and air outlet of the circulating air duct are both connected to the inner tank. A condensing device is provided in the circulating air duct. The fan forces airflow from the inner tank into the circulating air duct through the air intake of the circulating air duct. After passing through the condensing device, the airflow enters the inner tank through the air outlet, thereby achieving a circulation of airflow within the inner tank and the circulating air duct. Because the airflow is cooled and dehumidified while passing through the condensing device, the humidity of the air re-entered into the inner tank can be reduced. Thus, the humidity of the air inside the inner tank can be reduced by circulating the airflow between the inner tank and the circulating air duct.

[0004] However, the dishwasher provided by the prior art requires a condenser or other condensing device to be installed in the circulating air duct, resulting in a large overall footprint and high cost of the air duct assembly. If the humid hot air is condensed only by installing ribs in the circulating air duct to increase the contact area between the air duct wall and the humid hot air, the condensation and dehumidification effect is poor, and it is difficult to better meet the dehumidification needs inside the inner tank. Utility Model Content

[0005] One object of the present invention is to provide an air duct assembly, which can reduce the cost of the air duct assembly while improving the condensation efficiency of the air duct assembly on hot and humid air.

[0006] Another object of the present invention is to provide a cleaning device that can improve the drying efficiency of the cleaning device for objects, reduce the drying cost of the cleaning device, and simplify the structure of the cleaning device.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] An air duct assembly comprises a housing and a fan, the housing having an air extraction port, an air supply port, and a circulation air duct communicating between the air extraction port and the air supply port, the fan being connected to the housing and being located on a flow path of a fluid in the circulation air duct to promote airflow from the air extraction port through the circulation air duct to the air supply port, the air extraction port and the air supply port both being used to communicate with an inner container;

[0009] Along the flow direction of the airflow, multiple condensation components are vertically arranged in the circulating air duct. Each of the condensation components has multiple rough hydrophilic protrusions and multiple smooth hydrophobic concave portions on the surface in contact with the airflow. The protrusions and concave portions on each condensation component are staggered to form the condensation surface of the condensation component as a whole.

[0010] As an optional technical solution of an air duct assembly, the condensing component is a rib-plate structure, and the condensing surfaces are formed on opposite sides of the condensing component;

[0011] And / or, the convex portion is an arc surface.

[0012] As an optional technical solution of an air duct assembly, the circulating air duct includes a plurality of channel sections that are bent and connected in sequence, and the condensing component is provided in at least part of the channel sections.

[0013] As an optional technical solution of the air duct assembly, the channel where the condensing component is located is defined as a condensing channel, and each of the channel sections includes one condensing channel or at least two condensing channels arranged side by side;

[0014] The condensation channel has two channel side walls that are opposite and spaced apart. The first end of the condensation component extends in the direction toward the channel side wall, and the second end of the condensation component extends obliquely along the width center of the condensation channel in the direction of airflow flow. In the same condensation channel, the first ends of two adjacent condensation components are respectively close to the two channel side walls.

[0015] As an optional technical solution of the air duct assembly, a condensation channel extending downward along the airflow direction is defined as a first condensation channel, and the first end of the condensation component located in the first condensation channel is connected to the channel side wall;

[0016] And / or, a condensation channel extending upward along the airflow direction is defined as a second condensation channel, and the first end of the condensation component in the second condensation channel is spaced apart from the channel side wall.

[0017] As an optional technical solution of the air duct assembly, the circulating air duct has a lower communication position connected between the lower ends of two adjacent channel sections, and each of the lower communication positions is provided with a drain port, which is used to communicate with the inner tank;

[0018] And / or, the channel section located most downstream extends obliquely downward along the airflow direction, and the air delivery port is communicated with the lower end of the channel section;

[0019] And / or, a partition component is provided in at least part of the channel section, the partition component divides the channel section into at least two sub-channels arranged side by side, and the condensation component is provided in at least part of the sub-channels.

[0020] As an optional technical solution for an air duct component, a return air duct is provided inside the shell, and the return air duct is separated from the circulation air duct. The air inlet of the return air duct is connected to the air supply port, and the air outlet of the return air duct is connected to the fan inlet of the fan.

[0021] As an optional technical solution of an air duct assembly, the return air duct extends upward along the air flow direction, and a plurality of the condensing components are arranged at intervals in the return air duct along the air flow direction.

[0022] As an optional technical solution of the air duct assembly, in the return air duct, the first end of the condensing component is connected to the channel wall of the return air duct, the second end of the condensing component extends obliquely downward, and the first ends of two adjacent condensing components are respectively connected to the channel walls on opposite sides of the return air duct;

[0023] And / or, a first air guide portion and a second air guide portion connected in a V shape are provided on the lower side of the air supply port, and the air supply port is correspondingly arranged on the upper side of the intersection of the first air guide portion and the second air guide portion, the first air guide portion partially forms the channel wall of the circulating air duct, and the second air guide portion extends to below the air inlet of the return air duct.

[0024] As an optional technical solution for an air duct component, the air exhaust port is arranged between the fan air inlet of the fan and the air outlet of the return air duct, and the air outlet of the return air duct is arranged higher than the air exhaust port.

[0025] A cleaning device comprises an inner tank and the air duct assembly as described above, wherein the air suction port and the air supply port are both connected to the inner tank.

[0026] Beneficial effects of the utility model:

[0027] The air duct assembly provided by the utility model can enhance the adhesion of moisture on the condensation component when the hot and humid air flows through the condensation component by arranging smooth hydrophobic recesses and rough hydrophilic convex portions on the condensation component, thereby improving the condensation and dehumidification effect of the condensation component on the hot and humid air; since the condensation component is arranged and the recesses and convex portions are staggered along the flow direction of the airflow, it is beneficial for the water droplets condensed on the condensation component to drip downward, avoiding the continuous adhesion of condensed water on the condensation component and affecting the continuous condensation of the hot and humid air by the condensation component, thereby better ensuring the continuous condensation effect of the condensation component on the hot and humid air; furthermore, the structural setting of the condensation component for realizing the condensation of the hot and humid air occupies a small space and has a low cost. While ensuring the condensation effect on the hot and humid air, it can avoid the problem of increased cost of the air duct assembly caused by the use of a condenser or other condensation structures, simplify the overall structure of the air duct assembly, and reduce the overall cost of the air duct assembly.

[0028] The cleaning device provided by the present invention can improve the drying efficiency of the objects to be dried in the inner container and reduce the cost of the cleaning device by adopting the above-mentioned air duct assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the disassembled structure of the air duct assembly provided by an embodiment of the present utility model;

[0030] Figure 2 This is a partial structural cross-sectional view of the air duct assembly provided by an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the surface structure of the condensing component provided by an embodiment of the present utility model;

[0032] Figure 4 is a cross-sectional view of an air duct assembly provided by an embodiment of the present utility model;

[0033] Figure 5 It is a schematic diagram of the air flow in the air duct assembly provided by an embodiment of the present utility model.

[0034] In the picture:

[0035] 1. Shell; 11. Bottom shell; 12. Cover; 121. Mounting portion; 1211. Mounting groove; 1212. Ventilation opening; 13. Separating ribs; 131. Exhaust baffle; 1311. V-shaped guide; 1312. Curved guide; 132. Baffle; 133. Backflow baffle; 134. Main air duct separating rib; 135. Lower baffle; 14. Condensing component; 141. Concave portion; 142. Protrusion; 15. Guide Flow ribs; 151, first air guide; 152, second air guide; 16, air extraction port; 17, air supply port; 18, circulating air duct; 181, channel section; 182, air duct inlet; 1811, condensation channel; 1811a, first condensation channel; 1811b, second condensation channel; 19, return air duct; 110, fan mounting cavity; 1101, air inlet connection port; 120, drain port; 130, partition member;

[0036] 2. Fan; 21. Impeller; 22. Drive motor; 23. Fan cover. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0038] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] The embodiments provide a cleaning device that has the function of drying objects in an inner container, and can effectively reduce the humidity of the gas in the inner container during the drying process, thereby improving the drying efficiency and enhancing the safety and reliability of the cleaning device. The cleaning device can be a dishwasher or other device that can both clean and dry objects.

[0042] Specifically, the cleaning device includes a body, a door, and an air duct assembly. The body has an inner liner with an open front and a housing disposed outside the inner liner. The inner liner is used to hold objects to be dried. The door is movably mounted on the front of the body to selectively open or close the front opening of the inner liner. The air duct assembly is disposed between the inner liner and the housing and is used to circulate the air within the inner liner and the air duct assembly. During this circulation process, the humidity of the air within the inner liner is reduced, thereby improving drying efficiency.

[0043] like Figures 1 to 4As shown, the air duct assembly includes a shell 1 and a fan 2. The shell 1 has an air suction port 16, an air supply port 17, and a circulation air duct 18 connected between the air suction port 16 and the air supply port 17. The fan 2 is connected to the shell 1 and is located on the flow path of the fluid in the circulation air duct 18 to promote the air flow from the air suction port 16 to the air supply port 17 through the circulation air duct 18. The air suction port 16 and the air supply port 17 are both used to communicate with the inner tank. Along the flow direction of the air flow, a plurality of condensation components 14 are vertically arranged in the circulation air duct 18. Each condensation component 14 has a plurality of rough hydrophilic protrusions 142 and a plurality of smooth hydrophobic concave portions 141 on the surface in contact with the air flow. The protrusions 142 and concave portions 141 on each condensation component 14 are staggered to form the condensation surface of the condensation component 14 as a whole.

[0044] In the air duct assembly provided in this embodiment, when the hot and humid gas enters the circulating air duct 18 through the air extraction port 16, the hot and humid air contacts the condensation surface of the condensation component 14 and is condensed. Since the condensation component 14 is arranged vertically and the convex portion 142 and the concave portion 141 are arranged alternately along the flow direction of the air flow, the contact area between the condensation surface and the hot and humid air can be increased, thereby improving the condensation effect of the hot and humid air. At the same time, since the convex portion 142 is a rough hydrophilic surface, the convex portion 142 can be increased when it contacts the hot and humid air. 142 adsorbs water vapor in the humid hot air, so that the moisture in the humid hot air can be condensed into water droplets at the convex portion 142, and since the condensation surface is arranged vertically, the condensed water droplets flow downward to the depression of the concave portion 141 under the action of gravity and airflow; since the concave portion 141 is a smooth and hydrophobic surface, the water droplets will not be retained in the concave portion 141, but continue to flow to the next convex portion 142 under the action of the airflow, making the water droplets larger and larger, and finally dripping downward from the lower end of the condensation component 14.

[0045] That is, the air duct assembly provided in this embodiment can enhance the adhesion of moisture on the condensation component 14 when the humid hot air flows through the condensation component 14 by arranging a smooth hydrophobic recess 141 and a rough hydrophilic convex portion 142 on the condensation component 14, thereby improving the condensation and dehumidification effect of the condensation component 14 on the humid hot air; since the condensation component 14 is arranged vertically and the convex portion 142 and the concave portion 141 are staggered along the flow direction of the airflow, it is beneficial for the water droplets condensed on the condensation component 14 to drip downward, avoiding the condensed water from continuing to adhere to the condensation component 14 and affecting the continuous condensation of the humid hot air by the condensation component 14, thereby better ensuring the continuous condensation effect of the condensation component 14 on the humid hot air; furthermore, the structural setting of using this type of condensation component 14 to achieve condensation of the humid hot air occupies a small space and has a low cost. While ensuring the condensation effect on the humid hot air, it can avoid the problem of increased cost of the air duct assembly caused by the use of a condenser or other condensation structures, simplify the overall structure of the air duct assembly, and reduce the overall cost of the air duct assembly.

[0046] It is worth noting that the vertical setting refers to a vertical setting or a setting inclined relative to the vertical.

[0047] like Figure 1 and Figure 2 As shown, the housing 1 includes a bottom shell 11 and a cover 12. The bottom shell 11 has a shell groove with one side open. The cover 12 is located at the groove opening of the shell groove and closes the opening of the shell groove. The air extraction port 16 and the air supply port 17 are both located at the bottom of the shell groove. The cover 12 and the bottom shell 11 together form a circulation air duct 18. Furthermore, the bottom of the shell groove is provided with a plurality of dividing ribs 13, which are arranged to form an air duct groove. The cover 12 and the groove wall of the air duct groove together form the circulation air duct 18.

[0048] In this embodiment, the housing 1 has a fan installation cavity 110 inside, and an air inlet connection port 1101 is formed on one side of the cavity wall of the fan installation cavity 110. The air extraction port 16 is located outside the fan installation cavity 110 and is connected to the air inlet connection port 1101. The air duct inlet 182 of the circulating air duct 18 is provided on the other opposite side of the fan installation cavity 110. The fan 2 is arranged corresponding to the fan installation cavity 110, and the fan inlet of the fan 2 is connected to the fan installation cavity 110, and the fan outlet of the fan 2 is connected to the air duct inlet 182. Therefore, when the fan 2 is in operation, the air flow flowing out of the air extraction port 16 passes through the air inlet connection port 1101, the fan installation cavity 110, the fan inlet, the fan outlet, and the circulating air duct 18 in sequence before flowing to the air supply port 17.

[0049] Specifically, the cover 12 is recessed toward the bottom shell 11 to form a mounting portion 121. The recessed area of the mounting portion 121 forms a mounting groove 1211, and a vent 1212 is defined at the bottom of the mounting groove 1211. The fan 2 includes a drive motor 22 and an impeller 21. The impeller 21 is mounted in the mounting groove 1211, with the air inlet of the impeller 21 facing the vent 1212. A fan outlet is defined on one side of the mounting groove 1211, which is in direct communication with the air duct inlet 182. When the fan 2 is in operation, the impeller 21 rotates, causing airflow to be thrown from the air inlet 16 into the mounting groove 1211, and then flow through the fan outlet into the circulating air duct 18.

[0050] The air inlet communication port 1101 and the air duct inlet 182 are staggered in the horizontal direction to prevent the fan 2 from throwing the air flow in the circulating air duct 18 into the fan 2, thereby ensuring the orderliness of the air flow inside the air duct assembly.

[0051] The fan 2 also includes a fan cover 23, on which the drive motor 22 is mounted. The fan cover 23 closes the notch of the mounting groove 1211 to ensure the overall flatness and aesthetics of the air duct assembly and facilitate the installation of the fan 2 on the housing 1. Furthermore, the outer surface of the fan cover 23 is flush with the surface of the side of the cover 12 away from the bottom housing 11.

[0052] The bottom shell 11 has a first side wall and a second side wall that are spaced apart from each other in the width direction of the housing 1. The first side wall and a plurality of dividing ribs 13 together form a fan installation cavity 110. This reduces the number of dividing ribs 13 required and improves the structural compactness of the air duct assembly. In other embodiments, the fan installation cavity 110 can also be formed solely by the dividing ribs 13.

[0053] Specifically, in this embodiment, the separation rib 13 includes an air extraction barrier rib 131 disposed around the lower side of the air extraction port 16. The first end of the air extraction barrier rib 131 extends along the direction of the first side wall, and an air inlet communication port 1101 is formed between the first end of the air extraction barrier rib 131 and the first side wall. The provision of the air extraction barrier rib 131 can guide the airflow flowing out of the air extraction port 16 toward the air inlet communication port 1101, and avoid the problem of the air extraction port 16 being directly connected to the air inlet communication port 1101, which would restrict the location of the air extraction port 16. This improves the flexibility of the location of the air extraction port 16, thereby improving the compactness of the structural layout within the housing 1 and reducing the overall footprint of the air duct assembly. At the same time, since the flow path of the humid hot and humid gas between the air extraction port 16 and the air inlet communication port 1101 is increased, some of the humid hot and humid air is condensed at the point where it flows from the air extraction port 16 to the air inlet communication port 1101, thereby improving the condensation effect of the humid hot and humid air.

[0054] In this embodiment, the air extraction port 16 is disposed between the second side wall and the air inlet connection port 1101. The air extraction rib 131 includes a V-shaped guide portion 1311. The air extraction port 16 is correspondingly disposed on the upper side of the sharp corner of the V-shaped guide portion 1311. The first end of the V-shaped guide portion 1311 is connected to the second side wall or another dividing rib 13, and the second end of the V-shaped guide portion 1311 extends upwardly and obliquely toward the first side wall. The air inlet connection port 1101 is located between the second end of the V-shaped guide portion 1311 and the first side wall. The configuration of the air extraction rib 131 allows condensed water condensed and attached to the air extraction rib 131 to flow downward along the air extraction rib 131 to the air extraction port 16, and then flow back into the inner tank through the air extraction port 16.

[0055] like Figure 4 As shown, the air extraction rib 131 further includes an arcuate guide portion 1312 connected to the second end of the V-shaped guide portion 1311. The arcuate opening of the arcuate guide portion 1312 faces the fan 2. An air inlet communication opening 1101 is formed between the end of the arcuate guide portion 1312 away from the V-shaped guide portion 1311 and the first side wall. The provision of the arcuate guide portion 1312 can guide the airflow out of the V-shaped guide portion 1311 toward the air extraction communication opening, thereby improving the smoothness of the airflow.

[0056] Separating rib 13 also includes a baffle rib 132 located below fan 2 and facing air inlet opening 1101. The first end of baffle rib 132 is connected to the first sidewall, and an air duct inlet 182 is formed between the second end of baffle rib 132 and the second sidewall. The circulating air duct 18 is partially located below baffle rib 132. The baffle rib 132 prevents airflow within circulating air duct 18 from flowing into fan mounting cavity 110, ensuring orderly airflow within housing 1 and thus the efficient operation of fan 2.

[0057] In this embodiment, the circulating air duct 18 includes a plurality of channel sections 181 that are connected by a series of bends, and each channel section 181 is provided with a condensing element 14. This structural arrangement of the circulating air duct 18 can extend the length of the circulating air duct 18 while maintaining the dimensions of the housing 1, thereby increasing the flow path of the humid hot air within the circulating air duct 18 and enhancing the condensation effect of the humid hot air.

[0058] Each channel section 181 is arranged vertically or tilted relative to the vertical direction to facilitate the downward flow of condensed water formed in the channel section 181. Because the circulating air duct 18 has multiple channel sections 181 that are connected in a zigzag manner, that is, for some adjacent channel sections 181, they are connected at the lower ends of the two adjacent channel sections 181, and for some adjacent channel sections 181, they are connected at the upper ends of the two channel sections 181. As a result, there is an upper connecting position or a lower connecting position between two adjacent channel sections 181. For convenience of description, the channel section 181 in which air flows downward along the direction of air flow is referred to as a falling channel section, and the channel section 181 in which air flows upward along the direction of air flow is referred to as an ascending channel section.

[0059] In this embodiment, a drain port 120 is provided at each lower connection position, and the drain port 120 is connected to the inner tank. Thus, condensed water formed in the two channel sections 181 connected at the lower connection position will drip downward to the drain port 120 at the corresponding lower connection position, and the condensed water will enter the inner tank through the drain port 120, thereby preventing the condensed water from accumulating inside the circulating air duct 18 and ensuring smooth condensed water discharge.

[0060] The lower connection position is provided with a lower retaining rib 135, which is a V-shaped or arc-shaped structure with its opening facing upward. The channel wall on the side away from the descending channel section and the adjacent downstream ascending channel section is connected to both ends of the lower retaining rib 135. Drain outlet 120 is located at the lowest point of the lower retaining rib 135. The provision of the lower retaining rib 135 can guide the condensed water dripping on the lower retaining rib 135 to flow toward the drain outlet 120, improving the smoothness of the condensed water discharge.

[0061] In this embodiment, the baffle rib 132 forms an upper stop wall at the upper connecting position to stop the airflow flowing upward through the ascending channel section from continuing to flow upward, thereby guiding the airflow to flow toward the downstream adjacent descending channel section.

[0062] The most downstream channel section 181 extends obliquely downward in the direction of airflow, and the air supply port 17 is connected to the lower end of the channel section 181. This allows condensed water formed in the most downstream channel section 181 to flow directly back into the inner tank through the air supply port 17, reducing the number of drain ports 120 and simplifying the structure of the air duct assembly.

[0063] In this embodiment, there are two descending channel sections and one ascending channel section, with adjacent channel sections 181 separated by main air duct partition ribs 134. The upper end of the main air duct partition rib 134 between the upstreammost descending channel section and the adjacent upstream channel section 181 is connected to the second end of the flow-blocking rib 132. Specifically, of the three channel sections 181, the channel section 181 closest to the fan outlet serves as the air inlet channel section, the channel section 181 closest to the air supply port 17 serves as the air outlet channel section, and the remaining channel section 181 serves as the intermediate channel section.

[0064] It is worth noting that, in other embodiments, the number of channel segments 181 may be two, four, or another number, and the present invention does not impose any limitation thereto.

[0065] To further enhance the condensation effect, a partition member 130 is provided within some channel sections 181. The partition member 130 divides the channel section 181 into at least two sub-channels in the width direction. Condensation members 14 are provided within at least some of the sub-channels. This arrangement can narrow the width of the channel through which the airflow passes when some channel sections 181 are relatively wide, thereby increasing the probability and area of contact between the airflow and the condensation member 14, thereby enhancing the condensation effect of the airflow.

[0066] In this embodiment, two subchannels are provided within the inlet duct section, each of which is equipped with a condensing element 14. This ensures that the width of the inlet duct section corresponds to the fan outlet while increasing the probability of airflow contacting the condensing element 14 within the inlet duct section. The outlet duct section is provided with three subchannels, one of which is equipped with a condensing element 14. In other embodiments, the number of duct sections 181 provided with subchannels and the number of subchannels within a duct section 181 can be adjusted based on actual needs, and this invention does not impose any restrictions on this.

[0067] Furthermore, multiple sub-channels are sequentially arranged along the circumference of the air delivery port 17 to improve the rationality of the sub-channel layout and the convenience of connectivity between adjacent channel sections 181. In other embodiments, the sub-channels can be arranged in other ways, for example, sequentially arranged from top to bottom, sequentially arranged along the width direction of the housing 1, etc.

[0068] The channel in which the condensing element 14 is located is defined as a condensing channel 1811. Each channel section 181 includes one condensing channel 1811 or at least two condensing channels 1811 arranged side by side. The condensing channel 1811 has two channel sidewalls that are opposite and spaced apart. The first end of the condensing element 14 extends toward the channel sidewall, and the second end of the condensing element 14 extends obliquely along the width center of the condensing channel 1811 in the direction of airflow. In the same condensing channel 1811, the first ends of two adjacent condensing elements 14 are respectively close to the two channel sidewalls. This increases the contact area between the airflow and the condensing element 14, improving the condensation effect on the airflow. At the same time, the structural arrangement of the condensing elements 14 allows multiple condensing elements 14 within the same condensing channel 1811 to form a Stellar channel structure, which helps reduce the probability of airflow backflow and ensures smooth airflow.

[0069] It can be understood that, for a channel section 181 provided with a sub-channel, if a condensation component 14 is provided in the sub-channel, then the sub-channel is a condensation channel 1811; for a channel section 181 not provided with a sub-channel, if a condensation component 14 is provided in the channel section 181, then the channel section 181 is a condensation channel 1811.

[0070] In this embodiment, the condensing member 14 is a ribbed plate structure, with condensing surfaces formed on opposite sides of the condensing member 14 to further enhance the condensation effect on the hot and humid gas. In another embodiment, the condensing member 14 may also form a condensing surface only on the side facing the incoming airflow.

[0071] It is worth noting that, in this embodiment, the concave portion 141 is a surface that is recessed relative to the convex portion 142 , and it can be a flat surface or a recessed surface.

[0072] In this embodiment, the convex portion 142 is an arc surface to increase the smoothness of the condensing air flow and improve the processing convenience of the convex portion 142. In other embodiments, the convex portion 142 can be a triangle, a trapezoid or other shapes.

[0073] In this embodiment, the hydrophilicity or hydrophobicity is controlled by controlling the roughness of the concave portion 141 and the convex portion 142 to simplify the structure of the condensing member 14. Specifically, the roughness of the concave portion 141 is smaller than that of the convex portion 142.

[0074] In other embodiments, the hydrophobicity of the concave portion 141 or the hydrophilicity of the convex portion 142 may be achieved by providing a hydrophobic coating on the concave portion 141 and / or providing a hydrophilic coating on the convex portion 142 .

[0075] In this embodiment, the condensation channel 1811 extending downward along the airflow direction is defined as the first condensation channel 1811a, and the condensation channel 1811 extending upward along the airflow direction is defined as the second condensation channel 1811b. In the first condensation channel 1811a, the condensation member 14 extends obliquely downward from the first end to the second end; in the second condensation channel 1811b, the condensation member 14 extends obliquely upward from the first end to the second end.

[0076] Furthermore, the first section of the condensation component 14 located in the first condensation channel 1811a is connected to the channel side wall to enhance the overall structural strength and rigidity of the shell 1, and reduce the probability of the airflow flowing out from the gap between the channel side wall and the first end of the condensation component 14, thereby increasing the contact area between the airflow and the condensation component 14.

[0077] In the second condensation channel 1811b, the first end of the condensation component 14 is spaced apart from the channel side wall on the corresponding side so that a water leakage hole is formed between the condensation component 14 and the channel side wall, thereby allowing the condensed water attached to the upper side of the condensation component 14 to drip downward to the drain outlet 120 through the water leakage hole between the condensation component 14 and the channel dividing rib 13.

[0078] In this embodiment, a return air duct 19 is provided inside the housing 1. The return air duct 19 is provided separately from the circulating air duct 18. The air inlet of the return air duct 19 is connected to the air supply port 17, and the air outlet of the return air duct 19 is connected to the fan air inlet of the fan 2. By providing the return air duct 19, part of the airflow flowing out of the circulating air duct 18 is directly returned to the inner tank through the air supply port 17, and part of the airflow can flow through the return air duct 19 to the fan air inlet of the fan 2, thereby realizing a circulation flow between the circulating air duct 18 and the return air duct 19, thereby enhancing the condensation effect.

[0079] The return air duct 19 extends upward along the direction of the air flow, so that the condensed water formed when the air flows through the return air duct 19 toward the air inlet of the upward blower flows downward, which is conducive to the collection of the condensed water.

[0080] Furthermore, a guide rib 15 is provided around the lower side of the air supply port 17. The guide rib 15 includes a first guide portion 151 and a second guide portion 152 connected in a V-shape. The air supply port 17 is located above the intersection of the first guide portion 151 and the second guide portion 152. The first guide portion 151 partially forms the channel wall of the circulation air duct 18, and the second guide portion 152 extends below the air inlet of the return air duct 19. The first guide portion 151 is configured to receive condensed water dripping downward from the return air duct 19 and guide it to the air supply port 17, while also directing part of the airflow at the air supply port 17 toward the return air duct 19. The second guide portion 152 is configured to direct the airflow from the circulation air duct 18 toward the air supply port 17, while also directing condensed water from the circulation air duct 18 toward the air supply port 17.

[0081] To simplify the structure of the housing 1, in this embodiment, the return air duct 19 is formed by the second side wall and the return flow blocking rib 133, that is, the second side wall forms a side channel wall of the return air duct 19. In other embodiments, the return air duct 19 may also have other shapes.

[0082] Furthermore, backflow blocking rib 133 is connected to the end of exhaust blocking rib 131 away from the first side wall. An air duct inlet 182 is formed between backflow blocking rib 133 and blocking rib 132. That is, backflow blocking rib 133 partially forms the wall of fan installation cavity 110 and partially forms a side wall of the air inlet channel section of circulating air duct 18. One end of lower blocking rib 135 is connected to backflow blocking rib 133.

[0083] Furthermore, multiple condensing components 14 are spaced apart along the extension direction within the return duct 19, thereby further condensing the airflow as it flows through the return duct 19, thereby enhancing the condensation effect of the duct assembly on the airflow. In other embodiments, other condensation structures may also be provided within the return duct 19, such as a rib plate structure without the recess 141.

[0084] In this embodiment, within the return air duct 19, the first end of the condensing element 14 is connected to the duct wall of the return air duct 19, and the second end of the condensing element 14 extends downward at an angle. The first ends of two adjacent condensing elements 14 are respectively connected to opposite sides of the two return air ducts 19. This arrangement of the condensing elements 14 facilitates the downward dripping of condensed water adhering to the condensing elements 14. In other embodiments, multiple condensing elements 14 may be arranged in parallel and spaced apart from each other from top to bottom, with each condensing element 14 arranged at an angle relative to the vertical direction.

[0085] Furthermore, in the return air duct 19, the horizontal projections of the two adjacent condensation components 14 overlap, so that the condensed water falling from the upper condensation component 14 will drip onto the adjacent lower condensation component 14, thereby avoiding the problem of large noise caused by the condensed water dripping directly onto the first guide part 151 under the action of gravity, thereby reducing the noise when the cleaning equipment is in use.

[0086] In this embodiment, the exhaust port 16 is located between the air outlet of the return air duct 19 and the air inlet of the fan, and the air outlet of the return air duct 19 is set higher than the exhaust port 16 to avoid the exhaust rib 131 on the lower side of the exhaust port 16 from obstructing the flow of the air flow in the return air duct 19 to the air outlet of the fan, thereby ensuring the smooth flow of the air flow in the return air duct 19 to the air inlet of the fan; at the same time, this setting also prevents the condensed water at the exhaust port 16 from flowing into the return air duct 19.

[0087] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An air duct assembly, characterized in that: The invention comprises a shell (1) and a fan (2), wherein the shell (1) has an air extraction port (16), an air supply port (17), and a circulating air duct (18) communicating between the air extraction port (16) and the air supply port (17), and the fan (2) is connected to the shell (1) and is located on the flow path of the fluid in the circulating air duct (18) to promote the air flow from the air extraction port (16) to the air supply port (17) through the circulating air duct (18), and the air extraction port (16) and the air supply port (17) are both used to communicate with the inner container; Along the flow direction of the air flow, a plurality of condensation components (14) are vertically arranged in the circulating air duct (18), and each of the condensation components (14) has a plurality of rough hydrophilic protrusions (142) and a plurality of smooth hydrophobic concave portions (141) on the surface in contact with the air flow. The protrusions (142) and concave portions (141) on each condensation component (14) are staggered to form a condensation surface of the condensation component (14) as a whole.

2. The air duct assembly according to claim 1, characterized in that: The condensation component (14) is a rib-plate structure, and the condensation surfaces are formed on opposite sides of the condensation component (14); And / or, the convex portion (142) is an arc surface.

3. The air duct assembly according to claim 1, characterized in that: The circulating air duct (18) comprises a plurality of channel sections (181) that are bent and connected in sequence, and the condensing component (14) is provided in at least some of the channel sections (181).

4. The air duct assembly according to claim 3, characterized in that: The channel where the condensing component (14) is located is defined as a condensing channel (1811), and each of the channel sections (181) includes one condensing channel (1811) or at least two condensing channels (1811) arranged side by side; The condensation channel (1811) has two channel side walls that are opposite and spaced apart. The first end of the condensation component (14) extends in the direction toward the channel side wall, and the second end of the condensation component (14) extends obliquely along the width center of the condensation channel (1811) in the direction of air flow. In the same condensation channel (1811), the first ends of two adjacent condensation components (14) are respectively close to the two channel side walls.

5. The air duct assembly according to claim 4, characterized in that: A condensation channel (1811) extending downward along the airflow direction is defined as a first condensation channel (1811a), and a first end of the condensation component (14) located in the first condensation channel (1811a) is connected to a side wall of the channel; And / or, the condensation channel (1811) extending upward along the airflow direction is defined as a second condensation channel (1811b), and the first end of the condensation component (14) in the second condensation channel (1811b) is spaced apart from the channel side wall.

6. The air duct assembly according to claim 3, characterized in that: The circulating air duct (18) has a lower communication position communicating between the lower ends of two adjacent channel sections (181), and each of the lower communication positions is provided with a drain port (120), and the drain port (120) is used to communicate with the inner container; and / or, the channel section (181) located at the most downstream extends obliquely downward along the direction of airflow, and the air delivery port (17) is in communication with the lower end of the channel section (181); And / or, a partition component (130) is provided in at least part of the channel section (181), and the partition component (130) divides the channel section (181) into at least two sub-channels arranged side by side, and the condensation component (14) is provided in at least part of the sub-channels.

7. The air duct assembly according to any one of claims 1 to 6, characterized in that: A return air duct (19) is provided inside the housing (1), and the return air duct (19) is separated from the circulation air duct (18). The air inlet of the return air duct (19) is connected to the air supply port (17), and the air outlet of the return air duct (19) is connected to the fan air inlet of the fan (2).

8. The air duct assembly according to claim 7, characterized in that: The return air duct (19) extends upward along the direction of air flow, and a plurality of condensing components (14) are arranged at intervals along the direction of air flow in the return air duct (19).

9. The air duct assembly according to claim 8, characterized in that: In the return air duct (19), the first end of the condensing component (14) is connected to the channel wall of the return air duct (19), the second end of the condensing component (14) extends obliquely downward, and the first ends of two adjacent condensing components (14) are respectively connected to the channel walls on opposite sides of the return air duct (19); And / or, a first air guide portion (151) and a second air guide portion (152) connected in a V-shape are provided on the lower side of the air supply port (17), and the air supply port (17) is correspondingly provided on the upper side of the intersection of the first air guide portion (151) and the second air guide portion (152), the first air guide portion (151) partially forms a channel wall of the circulating air duct (18), and the second air guide portion (152) extends to below the air inlet of the return air duct (19).

10. A cleaning device comprising an inner container, characterized in that: It also includes the air duct assembly according to any one of claims 1 to 9, wherein the air suction port (16) and the air supply port (17) are both connected to the inner container.

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