Air duct assembly and mobile air conditioner

Abstract

The application provides a kind of air duct assembly and mobile air conditioner, including shell and air supply assembly, wherein: the shell is equipped with first air outlet;Air supply assembly includes air deflector and fan blade, air deflector is arranged at first air outlet;Fan blade is arranged in the shell;Air duct is formed between fan blade and first air outlet in the shell, and the inner wall surface of air duct is provided with convex-concave water receiving structure.The application sets convex-concave water receiving structure on the air supply path of air duct, can guide the wind on air supply path and collect the condensate water bead generated on air supply path at the same time, without increasing other auxiliary heating equipment, avoids condensate water bead from first air outlet or overflow first air outlet and fall into the ground.

Description

Technical Field

[0001] This invention belongs to the technical field of mobile air supply equipment, and particularly relates to an air duct component and a portable air conditioner. Background Technology

[0002] Currently, the air duct is a core component of air supply equipment and is also the part that is prone to condensation. When the equipment is running, the condensation generated in the air duct is easily blown out of the air outlet by the fan blades and then falls to the ground, affecting the consumer experience and leading to complaints.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a duct assembly and a portable air conditioner.

[0005] On one hand, the present invention provides a duct assembly, including a housing and an air supply assembly, wherein: The casing is equipped with a first air inlet; The air supply assembly includes an air guide plate and fan blades. The air guide plate is located at the first air outlet, and the fan blades are located inside the housing. An air supply duct is formed inside the casing between the fan blade and the first air outlet, and the inner wall of the air supply duct is provided with a convex and concave water-receiving structure.

[0006] In the above technical solution, a volute is provided inside the housing, and the fan blades are installed inside the volute. The volute forms the volute air duct; The air supply duct includes a volute duct and a connecting duct between the air outlet of the volute duct and the first air outlet. The air outlet flow area of ​​the connecting air duct is larger than the air inlet flow area of ​​the connecting air duct, and the air inlet flow area of ​​the connecting air duct is greater than or equal to the air outlet flow area of ​​the volute air duct; the convex and concave water receiving structure is formed on the connecting air duct.

[0007] In the above technical solution, one end of the connecting air duct is detachably connected to the first air outlet of the housing, and the other end is detachably connected to the air outlet of the volute air duct.

[0008] In the above technical solution, the connecting air duct is integrally formed by the shell.

[0009] In the above technical solution, the volute includes an upper volute and a lower volute, the connecting air duct is integrally formed by the volute, and the convex and concave water receiving structure is formed on the inner wall surface of the lower volute.

[0010] In the above technical solution, the convex-concave water receiving structure is a corrugated convex-concave water receiving structure. The corrugated convex-concave structure includes one or more convex ridges and one or more concave valleys extending laterally on the air supply duct along the air supply direction. For each adjacent convex ridge and concave valley, the leeward slope of the convex ridge is the first slope of the concave valley, and at least one convex ridge is formed near the fan blade, and at least one concave valley is formed near the first air supply outlet. The top view projection of the lower edge of the air guide plate falls on the concave valley formed near the side of the first air supply outlet.

[0011] In the above technical solution, each ridge forms a windward slope on the side of the wind blade and a leeward slope on the side of the first air outlet. The slope of the windward slope is greater than that of the leeward slope, and the length of the windward slope is less than that of the leeward slope.

[0012] In the above technical solution, each valley includes a first inclined surface near the fan blade side and a second inclined surface near the first air outlet side, and the first inclined surface and the second inclined surface form an included angle b, 90° < b < 180°.

[0013] In the above technical solution, the length of the first inclined plane is greater than the length of the second inclined plane, and the slope of the first inclined plane is less than the slope of the second inclined plane.

[0014] In the above technical solution, multiple valleys and ridges are provided and spaced apart along the air supply direction. The height of the multiple ridges decreases sequentially along the air supply direction. The depth of the valley closest to the first air outlet is lower than the lower edge of the first air outlet, and the height of the foremost ridge closest to the fan blade is higher than the lower edge of the first air outlet and higher than the lower edge of the bottommost air guide plate.

[0015] In the above technical solution, a concave valley and a convex ridge are respectively provided.

[0016] In the above technical solution, a drainage hole is formed at the bottom of the concave valley near the first air outlet.

[0017] In the above technical solution, a water-guiding structure is also connected to the bottom of the valley. The water-guiding structure is configured to guide the condensate flowing into the valley along the first and second inclined surfaces to a predetermined position.

[0018] In the above technical solution, the water diversion structure includes horizontal and vertical ribs that are interlaced at the bottom of the drainage valley. The horizontal and vertical ribs guide the condensate flowing into the drainage hole to a predetermined position.

[0019] In the above technical solution, the slope angle at the bottom of the horizontal reinforcement is f, 35°≤f≤60°, the slope angle at the bottom of the vertical reinforcement is g, 35°≤g≤60°, and the included angle between the horizontal reinforcement and the vertical reinforcement is j, 80°≤j≤90°.

[0020] In the above technical solution, the water-guiding structure is a hollow water-guiding component located at the bottom of the drain hole.

[0021] On the other hand, the present invention also provides a portable air conditioner, including a first heat exchanger and the aforementioned air duct assembly, wherein the first heat exchanger is disposed upstream of the fan blades and serves as an evaporator when the portable air conditioner is cooling.

[0022] In the above technical solution, the portable air conditioner also includes a second heat exchanger. The second heat exchanger is located below the air duct assembly and is used as a condenser when the portable air conditioner is cooling. The portable air conditioner has a water receiving tray below the second heat exchanger. The water receiving tray is equipped with a water pumping device. The condensate formed on the convex and concave water receiving structure is guided to the water receiving tray and pumped onto the second heat exchanger by the water pumping device.

[0023] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: I. This invention provides a convex-concave water-collecting structure on the air supply path of the air supply duct, which can guide the air on the air supply path and collect the condensate droplets generated on the air supply path at the same time. No additional auxiliary heating equipment is required, and the condensate droplets are prevented from being blown out or overflowing from the first air supply port and falling to the ground.

[0024] Second, by setting a water-guiding structure at the bottom of the concave valley (part of the convex-concave water-receiving structure), the present invention can collect the condensate droplets falling from the concave valley and guide them into the water-receiving tray, thus preventing the condensate droplets from entering other locations with potential safety hazards and improving the safety of the portable air conditioner during use.

[0025] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the air duct assembly in the prior art; Figure 2 This is a partial structural diagram of an air duct assembly in the prior art, showing the formation and blowing of condensate. Figure 3 This is a schematic diagram of the overall structure of a duct assembly according to Embodiment 1 of the present invention; Figure 4This is a schematic diagram of a convex-concave water-receiving structure in a duct assembly according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of a water intake structure in a duct assembly according to Embodiment 1 of the present invention; Figure 6 This is a partial structural schematic diagram of a duct assembly according to Embodiment 1 of the present invention; Figure 7 for Figure 4 Orthographic view; Figure 8 This is a schematic diagram of another structure of the convex and concave water receiving structure in a duct assembly according to Embodiment 1 of the present invention, showing the drainage hole; Figure 9 for Figure 8 Enlarged structural diagram at point A; Figure 10 for Figure 5 Orthographic view; Figure 11 for Figure 10 Enlarged structural diagram at point B; Figure 12 This is a schematic diagram of another structure of the water intake structure in a duct assembly according to Embodiment 1 of the present invention; Figure 13 This is a schematic diagram of another structure of the convex and concave water receiving structure in a duct assembly according to Embodiment 1 of the present invention. The figure shows the flow trajectory of condensate. Figure 14 for Figure 13 Enlarged structural diagram at point C; Figure 15 This is a schematic diagram of the concave valley structure in an air duct assembly according to Embodiment 2 of the present invention; Figure 1-2 In the middle, 10-motor, 20-fan blade, 30-upper volute, 40-lower volute, 40.1-bottom surface of lower volute, 50.1-air duct outlet, 50.2-air duct inlet, 60-shell, 60.1-panel outlet, 70-air guide plate, 80-ground, 90-air field, 100.1-condensate; Figure 3-15 In the middle, 110-motor, 120-fan blade, 130-volute, 140.1-connecting air duct, 140.2-wave boss one, 140.3-wave recess, 140.4-wave boss two, 140.5-drain hole, 140.6-horizontal rib, 140.7-vertical rib, 140.8-groove, 140.9-water guide, 150.1-second air outlet, 150.2-air inlet, 160-housing, 160.1-first air outlet, 170-air guide plate, 180-air duct; It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this 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 limiting this invention.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Before describing the specific embodiments of the present invention, let's first introduce the air supply equipment in the prior art: such as... Figure 1-2 As shown, the components of the existing air supply equipment include a motor 10, a fan blade 20 for support, an upper volute 30 and a lower volute 40 that cover both ends of the fan blade 20 to form a ventilable air duct. The air duct has an air outlet 50.1 and an air inlet 50.2. The panel air outlet 60.1 and the air outlet 50.1 are structurally matched. A guide plate 70 is installed on the panel air outlet 60.1. The air supply equipment is placed on the ground 80.

[0030] According to the refrigeration principle, when the air supply device refrigerates air, the motor 10 drives the fan blades 20 to rotate via electrical energy, forming an air field 90 that blows air out from the air outlet 50.1. When the air guide plate 70 is opened at an angle less than 45°, a temperature difference exists on both sides, causing condensation and forming condensate 100.1. The condensate 100.1 falls onto the bottom surface 40.1 of the lower volute, forming water droplets. Because the air outlet 60.1 of the panel is level with the bottom surface 40.1 of the lower volute, with a height difference H1=0, when condensate 100.1 appears on the bottom surface 40.1 of the lower volute, under the action of the wind, the water droplets are blown forward by the air field 90 and fall onto the ground 80, affecting consumer use.

[0031] To address the problem of condensate dripping onto the bottom surface, this invention provides a duct assembly, the specific implementation of which is as follows: Example 1: This embodiment provides a method such as Figure 3 The air duct assembly shown can be installed in any air supply device with exhaust function, such as an air conditioner, evaporative cooler, or evaporative fan.

[0032] The air duct assembly includes a housing 160 and an air supply assembly, with a first air outlet 160.1 provided on the housing 160. The air supply assembly includes an air guide plate 170 and a fan blade 120. The air guide plate 170 is disposed at the first air outlet 160.1 and can rotate to change the air outlet direction of the first air outlet 160.1. The fan blade 120 is disposed inside the housing 160 to provide air supply power for the airflow inside the housing 160 to the first air outlet 160.1. An air supply duct 180 is formed inside the housing 160 between the fan blade 120 and the first air outlet 160.1. The inner wall of the air supply duct 180 is provided with a convex-concave water-receiving structure. The convex-concave water-receiving structure can guide the air in the air supply path and collect the condensation water droplets generated in the air supply path, so as to prevent the condensation water droplets from being blown out or overflowing from the first air outlet 160.1 and falling onto the ground.

[0033] like Figure 6 As shown, a volute 130 is also provided inside the housing 160, and the fan blade 120 is disposed inside the volute 130. The volute 130 forms a volute air duct. The air supply duct 180 includes the volute air duct and a connecting duct 140.1 connecting the air outlet of the volute air duct and the first air supply port 160.1. The air outlet flow area of ​​the connecting duct 140.1 is larger than the air inlet flow area of ​​the connecting duct 140.1, and the air inlet flow area of ​​the connecting duct 140.1 is greater than or equal to the air outlet flow area of ​​the volute air duct. The aforementioned convex and concave water receiving structure is formed on the connecting duct 140.1. It is worth noting that, as Figure 6 As shown, a water collection base is integrally formed at the bottom of the volute 130. The water collection base is connected to the air outlet of the volute air duct. When condensation water droplets are generated on the inner surface of the volute 130, the condensation water droplets will fall down along the inner surface of the volute 130 into the water collection base. When the housing 160 exhausts air, the condensation water in the water collection base will flow into the connecting air duct 140.1 through the air outlet of the volute air duct.

[0034] The specific formation method of connecting air duct 140.1 is explained below, such as... Figure 3 and Figure 6As shown, the aforementioned volute 130 for guiding air includes two parts: an upper volute and a lower volute. The upper and lower volutes are arranged perpendicular to the axis of the fan blade. The connecting air duct 140.1 is integrally formed by the volute 130 and is formed on the bottom surface of the volute 130. Specifically, the convex and concave water-receiving structure is formed on the inner wall surface of the lower volute. The convex and concave water-receiving structure is part of the volute 130 and forms an integral whole with the volute 130. The advantage of forming the convex and concave water-receiving structure on the volute 130 is that it facilitates mold processing during manufacturing, and the mold can be opened successfully in one go without the need for secondary mold opening.

[0035] It should be noted that, in some alternative implementations, the connecting duct 140.1 may also be formed in other ways.

[0036] For example, one end of the connecting air duct 140.1 can be detachably connected to the first air outlet 160.1 of the housing 160, and the other end can be detachably connected to the air outlet of the volute air duct. In this case, the connecting air duct 140.1 forms a whole and is detachably connected between the first air outlet 160.1 and the volute 130. When the connecting air duct 140.1 is a detachable whole, its advantage is that it is easy to remove the connecting air duct 140.1 for cleaning, and avoids the accumulation of dirt in the convex and concave water-receiving structure inside the connecting air duct 140.1 after long-term use, which would become a source of pollution.

[0037] For example, the connecting duct 140.1 can be integrated with the housing 160, in which case the connecting duct 140.1 and the housing 160 can be used as a whole.

[0038] The above describes three ways of forming the connecting duct 140.1. However, regardless of which of the above methods is used, the convex and concave water receiving structure on the connecting duct 140.1 is integrally formed with the connecting duct 140.1. Specifically, when the connecting duct 140.1 is a plastic part, it can be directly formed by injection molding. When the connecting duct 140.1 is a metal part, it can be directly formed by stamping, thus facilitating the forming of the convex and concave water receiving structure.

[0039] The specific shape of the convex and concave water-receiving structure will be explained below, such as... Figure 4As shown, the convex-concave water-receiving structure is a wave-shaped convex-concave water-receiving structure, and the wave-shaped convex-concave structure includes one or more laterally extending ridges and one or more laterally extending valleys on the air supply duct 180 along the air supply direction (it should be noted that the lateral extension on the air supply duct is not limited to the vertical air supply duct; greater than 0 degrees and less than or equal to 90 degrees, or greater than or equal to -90 degrees and less than 0 degrees can all be considered as lateral extension), and at least one ridge is formed near the side close to the fan blade 120, and at least one valley is formed near the side close to the first air outlet 160.1. The projection of the lower edge of the air guide plate 170 in the top view falls on the valley, which allows the condensate droplets generated on the air guide plate 170 to fall into the valley. The ridge is used to guide the cold air on the air supply path, and the valley is used to collect the condensate droplets generated on the air supply path and / or on the air guide plate 170.

[0040] It is worth noting that in some alternative embodiments, the convex-concave water receiving structure can also be a wave-shaped water receiving structure similar to a wave, as long as the convex-concave water receiving structure can guide the wind and collect condensate droplets. In this embodiment, the specific shape of the convex-concave water receiving structure is not limited. For ease of explanation, the convex-concave water receiving structure is described in detail as a waveform.

[0041] The aforementioned ridges each have a windward slope on the side of the fan blade 120 and a leeward slope on the side of the first air outlet 160.1. The slope of the windward slope is greater than that of the leeward slope, and the length of the windward slope is less than that of the leeward slope. Furthermore, each valley includes a first inclined surface near the side of the fan blade 120 and a second inclined surface near the side of the first air outlet 160.1. The first and second inclined surfaces form an angle b, where 90° < b < 180°. The length of the first inclined surface is greater than that of the second inclined surface, and the slope of the first inclined surface is less than that of the second inclined surface. This arrangement facilitates the separation of condensate from one valley and its introduction into the adjacent valley.

[0042] Each adjacent ridge and valley is configured such that the leeward slope of the ridge is the first slope of the valley, meaning the ridge and valley share the same slope.

[0043] The following explains how the convex-concave water-collecting structure guides the airflow and collects condensate. When the fan blade 120 rotates, the cold air generated by the housing 160 is discharged from the first air outlet 160.1 through the air supply duct 180. During this process, the cold air carries the condensate in the air supply duct 180 towards the first air outlet 160.1. When the condensate in the air supply duct 180 reaches the convex-concave water-collecting structure, it climbs obliquely upwards along the convex ridge. When the condensate reaches the highest point of the convex ridge, it falls into the concave valley connected to the convex ridge under its own weight, thus completing the collection of condensate. The cold air flowing through the convex ridge changes its flow direction under the action of the convex ridge, and its flow direction is as follows: Figure 6 As indicated by the middle arrow, the cold air will not pass through the concave valley, thus preventing the condensate generated inside the housing 160 and the condensate collected in the concave valley from being blown out of the housing 160. At the same time, when the opening angle of the air guide plate 170 at the first air outlet 160.1 is less than 45°, the condensate formed on its surface will flow along the surface of the air guide plate 170 into the concave valley, thereby achieving simultaneous collection of the condensate generated inside the housing 160 and on the air guide plate 170, preventing the condensate generated by the air supply equipment during operation from being discharged outside the housing 160.

[0044] As mentioned above, at least one ridge and one valley are provided.

[0045] When the number of ridges and valleys is one, such as Figure 4 As shown, the ridge and the valley are formed by wave-shaped protrusion 140.2, wave-shaped concave platform 140.3 and wave-shaped protrusion 2 140.4 arranged sequentially along the air supply direction. At this time, wave-shaped protrusion 140.2 and wave-shaped concave platform 140.3 form a ridge, and wave-shaped concave platform 140.3 and wave-shaped protrusion 2 140.4 form a valley. Among them, wave-shaped concave platform 140.3 serves as the common surface of the ridge and the valley.

[0046] Of course, in some alternative embodiments, the number of ridges and valleys can be multiple. When multiple ridges and valleys are provided, they are spaced apart along the air supply direction, and the height of the ridges decreases sequentially along the air supply direction. The depth of the valley near the first air outlet 160.1 is lower than the lower edge of the first air outlet 160.1, and the height of the ridge near the fan blade 120 is higher than the lower edge of the first air outlet 160.1 and higher than the lower edge of the bottommost air guide plate 170, so that each valley can achieve the function of collecting water. By setting multiple valleys, condensate can be collected and stored, and humidification can be achieved through the condensate in the valleys, thus achieving the dual effects of storage and humidification. In this embodiment, for ease of explanation, the number of ridges and valleys is set to one as an example.

[0047] To improve the water collection effect, this embodiment describes the positional relationship and dimensions of the aforementioned corrugated boss 140.2, corrugated recess 140.3, corrugated boss 140.4, and connecting duct 140.1: like Figure 7 As shown, a height difference h1 is formed between the high point of the first wave-shaped protrusion 140.2 and the connecting air duct 140.1, where h1 is 2.5mm-7mm, preferably 4mm. The angle between the first wave-shaped protrusion 140.2 and the connecting air duct 140.1 is α, where 80°≤α≤130°, preferably α is 120°. A height difference h2 is formed between the high point of the first wave-shaped protrusion 140.2 and the low point of the second wave-shaped protrusion 140.3, where h2 is 5mm-10mm, preferably 7mm. A height difference h3 is formed between the high point of the first wave-shaped protrusion 140.2 and the high point of the second wave-shaped protrusion 140.4, where h3 is 5mm-10mm, preferably 7mm. By setting the above parameters, the water collection effect of the concave valley can be maximized, and the condensate water generated by the shell 160 during operation can be completely prevented from being blown out of the shell 160.

[0048] The aforementioned water collection tank needs to be drained promptly after collecting condensate to prevent it from accumulating and overflowing into the troughs, falling onto the ground.

[0049] To facilitate the timely drainage of water from the collection tank, such as Figure 8 and Figure 9 As shown, in this embodiment, multiple drainage holes 140.5 are equidistantly provided at the bottom of the concave valley. The drainage holes 140.5 are rectangular holes, with the width of the drainage hole 140.5 set as c, which is between 3mm and 8mm, and the length of the drainage hole 140.5 set as d, which is between 5mm and 20mm. The distance between two adjacent drainage holes 140.5 is e, which is between 8mm and 30mm. Preferably, c is 5mm, d is 10mm, and e is 15mm. By designing the drainage holes 140.5 according to the above dimensions and specifications, the smooth discharge of condensate can be ensured, and small animals can be prevented from entering the air supply equipment, thus avoiding equipment malfunctions and other problems.

[0050] It is worth noting that when the drain hole 140.5 is installed, the aforementioned wave-shaped boss 140.2 also has another function, namely, by guiding the cold air, it can also prevent the cold air from entering the machine through the drain hole 140.5.

[0051] In order to drain the cooling water in the valley to a predetermined location, a water guiding structure is connected to the bottom of the valley in this embodiment. The water guiding structure is configured to guide the condensate flowing into the valley along the first and second inclined surfaces to the predetermined location.

[0052] like Figure 5 and Figure 7 As shown, the water-guiding structure includes horizontal ribs 140.6 and vertical ribs 140.7 arranged alternately at the bottom of the concave valley. The horizontal ribs 140.6 and vertical ribs 140.7 guide condensate droplets falling from the drain hole 140.5 to a predetermined location. It is worth noting that in some alternative embodiments, any water-guiding component with a water-guiding function, such as a water pipe, water plate, or water cylinder, can be used to replace the horizontal ribs 140.6 and vertical ribs 140.7.

[0053] Specifically, such as Figure 10 and Figure 11 As shown, the bottom slope angle of the transverse reinforcement 140.6 is f, where 35°≤f≤60°. Preferably, f is 45°. Figure 7 As shown, the slope angle at the bottom of the vertical reinforcement 140.7 is g, 35°≤g≤60°, preferably g is 45°, as shown. Figure 12 As shown, the included angle between the horizontal reinforcement 140.6 and the vertical reinforcement 140.7 is j, where 80°≤j≤90°, and preferably, j is 85°.

[0054] After the condensate droplets flow out from the drain hole 140.5, they first flow diagonally along the lower edge of the horizontal rib 140.6, then flow along the lower edge of the vertical rib 140.7, and finally enter the larger water storage area at the predetermined location for reuse. The flow trajectory of the condensate as it flows into the water storage area is shown in the diagram. Figure 13 and Figure 14 As shown.

[0055] This application also provides a portable air conditioner. The following description uses a horizontal portable air conditioner as an example. This portable air conditioner has a horizontal air duct. Figure 3 and Figure 6 As shown, the portable air conditioner includes a motor 110, a fan blade 120, a volute 130, and a first heat exchanger (not shown in the figure). The volute 130 covers both ends of the fan blade 120 and has an air inlet 150.2 and a second air outlet 150.1. The portion of the volute 130 extending towards the first air outlet 160.1 serves as the aforementioned connecting air duct 140.1. At this time, the connecting air duct 140.1 and the volute 130 are an integral unit. The connecting air duct 140.1, which is part of the volute 130, cooperates with the first air outlet 160.1. At this time, the air inlet 150.2 and the second air outlet 150.1 of the volute 130, along with the connecting air duct 140.1 integrally formed with the volute 130, form an air supply duct 180 for supplying air to the outside of the housing 160. The first heat exchanger is located upstream of the fan blade 120 and serves as an evaporator when the portable air conditioner is cooling.

[0056] The portable air conditioner also includes a second heat exchanger (not shown in the figure). The second heat exchanger is located below the air duct assembly and is used as a condenser when the portable air conditioner is cooling. The portable air conditioner has a water collection tray (not shown in the figure) below the second heat exchanger, and a water pumping device (not shown in the figure) is provided on the water collection tray.

[0057] When the portable air conditioner is cooling, the airflow from the air duct 180 is blocked by the corrugated boss 140.2, causing the cold air to rise in the direction of the boss's inclination and preventing it from entering the trough. Condensation formed on the bottom surface of the volute 130 due to condensation on surrounding parts of the air duct 180, as it moves forward, falls into the trough due to gravity after passing the corrugated boss 140.2, forming condensate. Additionally, condensate formed on the air guide plate 170 also falls into the trough due to gravity, draining through the drain hole 140.5 at the bottom of the trough and being guided to a designated drip tray by a water-guiding structure at the bottom of the drain hole 140.5. This prevents condensate from entering other potentially hazardous areas. Furthermore, a water-spraying device in the drip tray can also spray condensate onto the second heat exchanger to cool it.

[0058] In summary, the convex-concave water-receiving structure enables the collection of condensate, preventing it from being blown out of the first air outlet 160.1 or falling onto the ground. The water-guiding structure allows the collected condensate to be discharged to a designated location, enabling its secondary use. This improves customer satisfaction and reduces the complaint rate.

[0059] Example 2: The difference between this embodiment and Embodiment 1 is that the valley formation method is different in this embodiment, such as... Figure 15 As shown, in this embodiment, the concave valley is a groove 140.8 directly formed on the connecting air duct 140.1. The groove 140.8 collects condensate, and a hollow water guide 140.9 is connected to the drain hole 140.5 at the bottom of the groove 140.8. Specifically, the water guide 140.9 is a water pipe to discharge the collected condensate in the groove 140.8 to a designated location. Of course, in some alternative embodiments, the water guide 140.9 can also be a water guide plate or water guide cylinder, or any component with a water guiding function.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A duct assembly, characterized in that, Includes the housing and air supply assembly, wherein: The housing is provided with a first air outlet; The air supply assembly includes an air guide plate and a fan blade, the air guide plate being disposed at the first air outlet; the fan blade being disposed inside the housing. An air supply duct is formed inside the housing between the fan blade and the first air outlet, and the inner wall of the air supply duct is provided with a convex and concave water receiving structure. The convex-concave water receiving structure is a corrugated convex-concave water receiving structure. The corrugated convex-concave structure includes one or more convex ridges and one or more concave valleys extending laterally on the air supply duct along the air supply direction. For each adjacent convex ridge and concave valley, the leeward slope of the convex ridge is the first slope of the concave valley. At least one convex ridge is formed near the fan blade, and at least one concave valley is formed near the first air supply outlet. The top view projection of the lower edge of the air guide plate falls on the concave valley formed near the first air supply outlet. Each of the convex ridges forms a windward slope on the side of the wind blade and a leeward slope on the side of the first air outlet. The slope of the windward slope is greater than the slope of the leeward slope, and the length of the windward slope is less than the length of the leeward slope.

2. The air duct assembly according to claim 1, characterized in that, The housing contains a volute, and the fan blade is disposed within the volute; The volute forms a volute air duct; The air supply duct includes a volute duct and a connecting duct between the air outlet of the volute duct and the first air outlet. The air outlet flow area of ​​the connecting air duct is larger than the air inlet flow area of ​​the connecting air duct, and the air inlet flow area of ​​the connecting air duct is greater than or equal to the air outlet flow area of ​​the volute air duct; the convex and concave water receiving structure is formed on the connecting air duct.

3. The air duct assembly according to claim 2, characterized in that, One end of the connecting air duct is detachably connected to the air outlet of the housing, and the other end is detachably connected to the air outlet of the volute air duct.

4. The air duct assembly according to claim 2, characterized in that, The connecting air duct is integrally formed from the housing.

5. The air duct assembly according to claim 2, characterized in that, The volute includes an upper volute and a lower volute; The connecting air duct is integrally formed from the volute; The convex and concave water-receiving structure is formed on the inner wall surface of the lower volute.

6. The air duct assembly according to claim 1, characterized in that, Each of the valleys includes a first inclined surface near the fan blade side and a second inclined surface near the first air outlet side, the first inclined surface and the second inclined surface forming an included angle b, 90° < b < 180°.

7. The air duct assembly according to claim 6, characterized in that, The length of the first inclined plane is greater than the length of the second inclined plane, and the slope of the first inclined plane is less than the slope of the second inclined plane.

8. The air duct assembly according to any one of claims 1-7, characterized in that, The valleys and ridges are provided in multiples and are spaced apart along the air supply direction. The height of the ridges decreases sequentially along the air supply direction. The depth of the valleys near the first air outlet is lower than the lower edge of the first air outlet, and the height of the ridges near the fan blades is higher than the lower edge of the first air outlet and higher than the lower edge of the air guide plate.

9. The air duct assembly according to claim 8, characterized in that, The concave valley near the first air outlet has a drainage hole formed at its bottom.

10. The air duct assembly according to claim 9, characterized in that, The bottom of the valley is also connected to a water-guiding structure, which is configured to guide the condensate flowing into the valley along the first and second inclined surfaces to a predetermined location.

11. The air duct assembly according to claim 10, characterized in that, The water guiding structure includes horizontal and vertical ribs that are interlaced at the bottom of the valley, which guide the condensate flowing into the drain hole to the predetermined position.

12. The air duct assembly according to claim 11, characterized in that, The slope angle at the bottom of the horizontal reinforcement is f, 35°≤f≤60°, the slope angle at the bottom of the vertical reinforcement is g, 35°≤g≤60°, and the included angle between the horizontal and vertical reinforcements is j, 80°≤j≤90°.

13. The air duct assembly according to claim 10, characterized in that, The water-guiding structure is a hollow water-guiding component located at the bottom of the drain hole.

14. A portable air conditioner, characterized in that, It includes a first heat exchanger and a duct assembly as described in any one of claims 1-13, wherein the first heat exchanger is disposed upstream of the fan blades and serves as an evaporator during mobile air conditioning cooling.

15. The portable air conditioner according to claim 14, characterized in that, The portable air conditioner also includes a second heat exchanger; the second heat exchanger is located below the air duct assembly and serves as a condenser when the portable air conditioner is cooling; the portable air conditioner has a water receiving tray below the second heat exchanger, and the water receiving tray is equipped with a water pumping device, so that the condensate formed on the convex and concave water receiving structure is guided to the water receiving tray, and the condensate is pumped onto the second heat exchanger by the water pumping device.

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