Mobile air conditioner

Abstract

The utility model relates to the technical field of air conditioners, in particular to a mobile air conditioner, and aims to solve the problem of potential safety hazards caused by the fact that condensed water in the mobile air conditioner splashes to other parts. In order to achieve the purpose, the mobile air conditioner comprises a shell, wherein a cavity is formed in the shell; the outdoor air duct assembly is arranged in the cavity and comprises an upper air duct plate, a lower air duct plate and a volute which define the air outlet wheel space, the upper air duct plate divides the cavity into an indoor cavity and an outdoor cavity, an indoor heat exchanger is arranged in the indoor cavity, and an outdoor heat exchanger is arranged in the outdoor cavity; the water pan is constructed on the upper air duct plate and used for receiving condensed water generated by the indoor heat exchanger, and a drainage hole corresponding to the water pan is formed in the upper air duct plate; the water collecting box is formed on the lower air duct plate corresponding to the drainage hole, the water collecting box is arranged corresponding to the outdoor heat exchanger and extends towards the upper air duct plate, and a plurality of water distribution holes corresponding to the water collecting box are formed in the lower air duct plate. The water collecting box is arranged, so that splashing of the condensed water can be avoided, and the condensed water drips to the outdoor heat exchanger through the water distributing holes.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field, concretely provides a mobile air conditioner. BACKGROUND

[0002] At present, whether it is a hanging type air conditioner or a vertical type air conditioner, it needs to be fixedly installed at a limited position and cannot be moved. Therefore, a mobile air conditioner emerges as the times require. The mobile air conditioner mainly comprises a casing, an indoor airflow circulation assembly and an outdoor airflow circulation assembly. The indoor airflow circulation assembly and the outdoor airflow circulation assembly are both arranged in the casing. The casing is provided with an indoor air inlet and an indoor air outlet corresponding to the indoor airflow circulation assembly. The casing is also provided with an outdoor air inlet and an outdoor air outlet corresponding to the outdoor airflow circulation assembly. Since the mobile air conditioner is very small in size, it can be moved to different positions or rooms to adjust the temperature of the air in the positions or rooms.

[0003] In the mobile air conditioner of the related art, the evaporator is on the upper side and the condenser is on the lower side. In order to improve the heat exchange efficiency, the condensed water generated by the evaporator is collected in a water collecting tray. A drain hole corresponding to the condenser is arranged on the water collecting tray to achieve the cooling of the condenser. However, the condensed water splashes during the dripping process and may splash onto other components, causing a safety hazard. SUMMARY

[0004] The utility model aims at solving the above technical problem, that is, solving the problem of the safety hazard caused by the splashing of condensed water to other components in the mobile air conditioner.

[0005] The utility model provides a mobile air conditioner, include: shell, inside form cavity, outdoor air duct subassembly, set up in the cavity, including upper air duct board, lower air duct board and volute, the upper air duct board separates the cavity for indoor chamber and outdoor chamber, wherein, the indoor chamber is equipped with indoor heat exchanger, the outdoor chamber is equipped with outdoor heat exchanger, water collecting tray, the structure is in the upper air duct board, for the condensed water of the indoor heat exchanger generation is accepted, wherein, the upper air duct board is set up with the drain hole corresponding the water collecting tray, the water collecting box is formed in the lower air duct board corresponding the drain hole, the water collecting box is arranged corresponding the outdoor heat exchanger, and it extends towards the direction of the upper air duct board, wherein, the lower air duct board is set up with a plurality of water distribution holes corresponding the water collecting box.

[0006] In the case of adopting the above technical scheme, by setting the water collecting box extending towards the upper air duct board on the lower air duct board, the condensed water discharged from the water collecting tray can be first collected to avoid the splashing of the condensed water everywhere and improve the safety. Then, by setting the water distribution holes corresponding on the lower air duct board, the collected condensed water can be stably and uniformly dripped onto the outdoor heat exchanger, thereby ensuring the cooling effect of the outdoor heat exchanger.

[0007] In the optional embodiment of the mobile air conditioner, the upper air duct plate and the volute enclose an air wheel space, and the water collecting box is arranged outside the air wheel space.

[0008] By arranging the water collecting box outside the air wheel space, on the one hand, the space between the upper air duct plate and the lower air duct plate outside the volute can be fully utilized to improve the space utilization rate, and the side wall of the water collecting box can be used to keep a certain distance from other components to avoid condensation of the surrounding components; on the other hand, the high-temperature air in the air duct can be prevented from contacting the low-temperature condensed water, so that the condensed water in the air wheel space is avoided, and the safety of the mobile air conditioner is improved.

[0009] In the optional embodiment of the mobile air conditioner, the water distribution holes are arranged in multiple rows along the length direction of the outdoor heat exchanger.

[0010] By arranging multiple rows of water distribution holes, the outdoor heat exchanger located below the water collecting box can be dripped with condensed water, so that the cooling effect is ensured.

[0011] In the optional embodiment of the mobile air conditioner, the diameter of the water distribution hole is 2-3 times the distance between adjacent fins of the outdoor heat exchanger.

[0012] By arranging the diameter of the water distribution hole to be 2-3 times the distance between adjacent fins of the outdoor heat exchanger, the water distribution hole can be prevented from being blocked due to the influence of the surface tension and viscosity of the condensed water when the diameter of the water distribution hole is too small.

[0013] In the optional embodiment of the mobile air conditioner, the lower air duct plate is provided with a sunken part recessed towards the outdoor heat exchanger, and the water distribution hole is arranged in the sunken part.

[0014] By arranging the sunken part, the condensed water entering the water collecting box can automatically flow towards a lower place, which is conducive to the collection of the condensed water, so that the flow of the water in the water distribution hole is ensured.

[0015] In the optional embodiment of the mobile air conditioner, the upper surface of the lower air duct plate is provided with a first blocking rib surrounding the circumference of the water distribution hole.

[0016] By arranging the first blocking rib, the liquid level in the water collecting box can be higher than the first blocking rib, and then flow to the outdoor heat exchanger through the water distribution hole, so that the flow of the condensed water is relatively smooth and uniform.

[0017] In the optional embodiment of the mobile air conditioner, the lower surface of the lower air duct plate is provided with a second blocking rib surrounding the circumference of the water distribution hole.

[0018] By setting the second surrounding rib, water column can be formed during the flow of the condensed water towards the outdoor heat exchanger, so as to avoid the formation of liquid film on the lower surface of the lower air duct plate under the action of the tension and viscosity of the condensed water, and to block the water distribution hole.

[0019] In the optional embodiment of the mobile air conditioner, the lower surface of the lower air duct plate is provided with a supporting rib, which is arranged around the outdoor heat exchanger and abuts against the top end edge of the outdoor heat exchanger.

[0020] By setting the supporting rib, a spacing is formed between the water distribution hole and the top end edge of the outdoor heat exchanger, which is beneficial to the formation of liquid column, so as to uniformly distribute the condensed water and guide the flow of the condensed water on the lower surface of the lower air duct plate.

[0021] In the optional embodiment of the mobile air conditioner, the supporting rib is provided with an angle reinforcing rib at the connecting corner of the lower air duct plate.

[0022] By setting the angle reinforcing rib, the structural strength and stability of the supporting rib can be improved.

[0023] In the optional embodiment of the mobile air conditioner, the upper surface of the lower air duct plate is coated with a hydrophobic coating.

[0024] By setting the hydrophobic coating, the flowability of water can be improved, and the condensed water can be prevented from being retained on the upper surface of the lower air duct plate. BRIEF DESCRIPTION OF DRAWINGS

[0025] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0026] Figure 1 is a structural schematic view of a mobile air conditioner provided by the present application, in which part of the shell is removed;

[0027] Figure 2 is a structural schematic view of an outdoor air duct assembly provided by the present application;

[0028] Figure 3 is an exploded schematic view of an outdoor air duct assembly, an indoor heat exchanger and an outdoor heat exchanger provided by the present application;

[0029] Figure 4 is a structural schematic view of a lower air duct plate from a first perspective provided by the present application;

[0030] Figure 5 is a structural schematic view of a lower air duct plate from a second perspective provided by the present application;

[0031] Figure 6It is a structural schematic view of a lower air duct plate and an outdoor heat exchanger provided by the utility model.

[0032] Figure 7 It is another sectional view of a lower air duct plate provided by the utility model.

[0033] Figure 8 It is Figure 7 The local enlarged schematic view.

[0034] Mark explanation:

[0035] 100, shell; 101, indoor cavity; 102, outdoor cavity; 110, bottom disc;

[0036] 200, outdoor air duct assembly; 210, upper air duct plate; 211, water pan; 220, lower air duct plate; 221, water collecting box; 222, water distribution hole; 2221, first surrounding blocking rib; 2222, second surrounding blocking rib; 224, supporting rib; 225, corner reinforcing rib; 230, volute;

[0037] 310, indoor heat exchanger; 320, outdoor heat exchanger;

[0038] 410, outdoor fan. Specific implementation

[0039] The preferred embodiments of the application are described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the application, and are not intended to limit the protection scope of the application. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0040] It should be noted that in the description of the application, the terms "middle", "upper", "lower", "vertical", "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, it needs to be explained that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In combination Figures 1 to 8 As shown in the utility model provides a kind of mobile air conditioner, including shell 100, outdoor air duct component 200, indoor heat exchanger 310, outdoor heat exchanger 320, water pan 211 and water collecting box 221.The inside of shell 100 is formed with cavity.Outside air duct component 200 is set to cavity, including upper air duct plate 210, lower air duct plate 220 and volute 230, upper air duct plate 210 separates cavity into indoor cavity 101 and outdoor cavity 102, wherein indoor cavity 101 is equipped with indoor heat exchanger 310, and outdoor cavity 102 is equipped with outdoor heat exchanger 320. Water pan 211 is structured in upper air duct plate 210, for receiving the condensate water generated by indoor heat exchanger 310, wherein the drain hole corresponding to water pan 211 is formed in upper air duct plate 210. Water collecting box 221 is formed in lower air duct plate 220 corresponding to drain hole, and water collecting box 221 is arranged corresponding to outdoor heat exchanger 320, and extends towards the direction of upper air duct plate 210, wherein lower air duct plate 220 is provided with a plurality of water distribution holes 222 corresponding to water collecting box 221.

[0043] Optionally, the inside of shell 100 is provided with a cavity, which is separated into indoor cavity 101 and outdoor cavity 102 by outdoor air duct component 200 arranged inside. Specifically, outdoor air duct component 200 includes oppositely arranged upper air duct plate 210 and lower air duct plate 220, and volute 230. Upper air duct plate 210, lower air duct plate 220 and volute 230 jointly enclose a wind wheel space. Outdoor fan 410 is arranged in the wind wheel space. Wherein, upper air duct plate 210 serves as a partition plate to separate the cavity into indoor cavity 101 and outdoor cavity 102.

[0044] Correspondingly, shell 100 is respectively provided with indoor air inlet and indoor air outlet corresponding to indoor cavity 101, and outdoor air inlet and outdoor air outlet corresponding to outdoor cavity 102. Indoor fan is further arranged in indoor cavity 101. Under the drive of outdoor fan 410, air enters outdoor cavity 102 through outdoor air inlet, exchanges heat with outdoor heat exchanger 320, and then flows to outdoor air duct component 200, and then flows out of shell 100 through outdoor air outlet; under the drive of indoor fan, indoor air enters indoor cavity 101 through indoor air inlet, exchanges heat with indoor heat exchanger 310, and then flows to indoor air outlet. Wherein, lower air duct plate 220 is provided with air duct inlet, and volute 230 is provided with air duct outlet corresponding to outdoor air outlet.

[0045] Optionally, the indoor fan and the outdoor fan 410 are connected by a double-shaft motor, which is arranged in the wind wheel space.

[0046] Alternatively, the indoor fan and the outdoor fan 410 are each connected with a driving motor.

[0047] When the mobile air conditioner operates in the cooling mode, the indoor heat exchanger serves as an evaporator, and the outdoor heat exchanger serves as a condenser.

[0048] Optionally, the upper air duct plate 210 not only has the role of a partition plate, but also forms a water pan 211 corresponding to the indoor heat exchanger 310. The indoor heat exchanger 310 is installed in the water pan 211, and the water pan 211 receives the condensed water generated by the indoor heat exchanger 310. Correspondingly, the upper air duct plate 210 serves as the bottom wall of the water pan 211, and is provided with a drain hole. A water collecting box 221 is arranged below the drain hole, and the water collecting box 221 receives the condensed water flowing out through the drain hole. Specifically, the side box wall of the water collecting box 221 extends towards the upper air duct plate 210, the lower air duct plate 220 constitutes the bottom box wall of the water collecting box 221, and the upper part of the water collecting box 221 is open to avoid the splashing of condensed water. Since the water collecting box 221 is arranged on the lower air duct plate 220, it has a certain distance from other components in the outer shell 100, which can avoid the splashing of condensed water onto other components, thereby causing problems such as rusting and short circuit of other components. Further, the water collecting box 221 is located between the upper air duct plate 210 and the lower air duct plate 220, which is equivalent to being independent of the indoor cavity 101 and the outdoor cavity 102, and can further improve the safety of the mobile air conditioner.

[0049] Optionally, the side box wall of the water collecting box 221 is integrally formed with the lower air duct plate 220.

[0050] Alternatively, the side box wall of the water collecting box 221 is fixedly connected with the lower air duct plate 220.

[0051] Optionally, the lower air duct plate 220 serves as the bottom box wall of the water collecting box 221, and the lower air duct plate 220 is provided with a water distribution hole 222 in the space surrounded by the side box wall, and the water distribution hole 222 is located above the outdoor heat exchanger 320 and corresponds to the arrangement of the outdoor heat exchanger 320. Through the arrangement of the water distribution hole 222, the low-temperature condensed water can be dropped onto the outdoor heat exchanger 320 to cool the outdoor heat exchanger 320 and fully utilize the cold energy of the condensed water.

[0052] Optionally, the outer shell 100 further comprises a bottom plate 110, and the outdoor heat exchanger 320 is arranged between the lower air duct plate 220 and the bottom plate 110.

[0053] In the above technical scheme, the water collecting box 221 extending towards the upper air duct plate 210 is arranged on the lower air duct plate 220, so that the condensed water discharged from the water pan 211 can be collected first to avoid splashing of the condensed water everywhere and improve safety; and the water distribution holes 222 arranged correspondingly on the lower air duct plate 220 can make the collected condensed water drip and sprinkle stably and uniformly on the outdoor heat exchanger 320, thereby ensuring the cooling effect of the outdoor heat exchanger 320.

[0054] In the optional embodiment of the mobile air conditioner, the upper air duct plate 210 and the volute 230 enclose an air wheel space, and the water collecting box 221 is arranged outside the air wheel space.

[0055] By arranging the water collecting box outside the air wheel space, on the one hand, the space between the upper air duct plate and the lower air duct plate outside the volute can be fully utilized to improve the space utilization rate, and the side wall of the water collecting box can be used to keep a certain distance from other components to avoid condensation of the surrounding components; on the other hand, the high-temperature air in the air duct can be prevented from contacting the low-temperature condensed water, thereby preventing the condensed water from being generated in the air wheel space and improving the safety of the mobile air conditioner.

[0056] Specifically, the upper end of the volute 230 is fixedly connected with the upper air duct plate 210 to enclose an air wheel space. Preferably, the upper air duct plate 210 and the volute 230 are integrally formed. The lower end of the volute 230 is detachably connected with the lower air duct plate 220.

[0057] Alternatively, the upper air duct plate 210 and the volute 230 are fixedly connected by welding, gluing or the like.

[0058] The water collecting box 221 is arranged outside the volute 230, which not only can prevent the condensed water from splashing on the outdoor fan 410 and other components, but also can prevent the low-temperature condensed water from exchanging heat with the hot air in the air wheel space, thereby preventing the condensed water from being generated in the air wheel space and improving the safety of the outdoor fan 410 and the mobile air conditioner.

[0059] In the optional embodiment of the mobile air conditioner, the water distribution holes 222 are arranged in multiple columns along the length direction of the outdoor heat exchanger 320.

[0060] By arranging multiple columns of water distribution holes 222, and multiple water distribution holes 222 in each column, the outdoor heat exchanger 320 can be dripped with condensed water as much as possible to improve the cooling effect.

[0061] Optionally, the water distribution holes 222 are arranged in multiple rows along the width direction of the outdoor heat exchanger 320.

[0062] Optionally, the distance between adjacent water distribution holes 222 is equal. By making the distance between adjacent water distribution holes 222 equal, the condensed water can be uniformly dripped onto the outdoor heat exchanger 320, thereby improving the cooling effect. Optionally, a plurality of water distribution holes 222 are arranged in each column.

[0063] Alternatively, the distance between adjacent water distribution holes 222 is not equal.

[0064] In the optional embodiment of the mobile air conditioner described above, the diameter of the water distribution hole 222 is 2-3 times the distance between adjacent fins of the outdoor heat exchanger 320.

[0065] By setting the diameter of the water distribution hole 222 to be 2-3 times the distance between adjacent fins of the outdoor heat exchanger 320, it is possible to prevent the water distribution hole 222 from being blocked due to the influence of the surface tension and viscosity of the condensed water when the diameter of the water distribution hole 222 is too small.

[0066] Preferably, the diameter of the water distribution hole 222 is 6mm.

[0067] Optionally, the diameter of the water distribution hole 222 is constant from the upper surface to the lower surface of the upper and lower air duct plate 220, forming a cylindrical through hole.

[0068] Alternatively, the diameter of the water distribution hole 222 gradually decreases from the upper surface to the lower surface of the upper and lower air duct plate 220. By setting it in this way, the condensed water can be dripped onto the outdoor heat exchanger 320 in a thin line after passing through the water distribution hole 222, making the condensed water on the outdoor heat exchanger 320 thinner and improving the heat exchange effect.

[0069] In the optional embodiment of the mobile air conditioner described above, the lower air duct plate 220 is provided with a sunken portion recessed towards the outdoor heat exchanger 320, and the water distribution hole 222 is arranged in the sunken portion.

[0070] By setting the sunken portion, the condensed water entering the water collecting box 221 can automatically flow towards the lower part, which is conducive to the collection of condensed water, thereby ensuring the flow of water in the water distribution hole 222.

[0071] Alternatively, the sunken portion is not provided.

[0072] In the optional embodiment of the mobile air conditioner described above, in combination with Figure 7 , Figure 8 As shown in the drawings, the upper surface of the lower air duct plate 220 is provided with a first enclosing rib 2221 surrounding the circumference of the water distribution hole 222.

[0073] By providing the first enclosing rib 2221, the liquid level in the water collecting box 221 can be higher than the first enclosing rib 2221 before flowing to the outdoor heat exchanger 320 through the water distribution hole 222, which can make the flow of condensed water more gentle and uniform.

[0074] Optionally, the outer surface of the first enclosing rib 2221 is parallel to the upper surface of the lower air duct plate 220.

[0075] Alternatively, the outer surface of the first enclosing rib 2221 is arranged to be inclined downwardly toward the direction of the center of the circle, so that the inner ring of the first enclosing rib 2221 forms a concave. Wherein, the outer surface of the first enclosing rib 2221 is the side surface away from the upper surface of the lower air duct plate 220.

[0076] Alternatively, the first enclosing rib 2221 is not arranged.

[0077] In the optional embodiments of the mobile air conditioner described above, in combination with Figure 7 , Figure 8 As shown in the drawings, the lower surface of the lower air duct plate 220 is provided with a second enclosing rib 2222 surrounding the circumference of the water distribution hole 222.

[0078] Through the arrangement of the second enclosing rib 2222, the condensate water can form a water column during the process of flowing toward the outdoor heat exchanger 320, so as to avoid the formation of a liquid film on the lower surface of the lower air duct plate 220 under the water distribution hole 222 due to the action of the tension and viscosity of the condensate water, thereby blocking the water distribution hole 222.

[0079] Optionally, the outer surface of the second enclosing rib 2222 is parallel to the lower surface of the lower air duct plate 220.

[0080] Alternatively, the outer surface of the second enclosing rib 2222 is arranged to be inclined upwardly along the direction away from the center of the circle. Wherein, the outer surface of the second enclosing rib 2222 is the side surface away from the lower surface of the lower air duct plate 220.

[0081] Alternatively, the second enclosing rib 2222 is not arranged.

[0082] In the optional embodiments of the mobile air conditioner described above, in combination with Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown in the drawings, the lower surface of the lower air duct plate 220 is provided with a support rib 224, which is arranged around the circumference of the outdoor heat exchanger 320 and abuts against the top end edge of the outdoor heat exchanger 320.

[0083] Through the arrangement of the support rib 224, a spacing is formed between the water distribution hole 222 and the top end edge of the outdoor heat exchanger 320, which is beneficial for the formation of a liquid column, so as to facilitate the uniform distribution of the condensate water, while the support rib 224 can also play a role in guiding the condensate water on the lower surface of the lower air duct plate 220, and in addition, the support rib 224 can also play a role in sealing the top end of the outdoor heat exchanger 320.

[0084] Optionally, the area surrounded by the annular rib formed by the support rib 224 is smaller than the area of the top edge of the outdoor heat exchanger 320, so as to ensure the stability of the abutment between the support rib 224 and the outdoor heat exchanger 320.

[0085] Optionally, the support rib 224 is provided with a flat plate portion towards the end surface of the outdoor heat exchanger 320, so that the cross-sectional area of the flat plate portion is greater than that of the support rib, so as to increase the contact area of the outdoor heat exchanger 320 and improve the sealing performance.

[0086] Alternatively, the support rib 224 is not provided with a flat plate portion towards the end surface of the outdoor heat exchanger 320.

[0087] Alternatively, the support rib 224 is not provided.

[0088] In the optional embodiments of the mobile air conditioner described above, in combination with Figure 5 As shown, the support rib 224 is provided with an angle reinforcing rib 225 at the connecting corner of the lower air duct plate 220.

[0089] Through the arrangement of the angle reinforcing rib 225, the stress concentration at the connecting portion of the support rib 224 and the lower air duct plate 220 can be prevented, and the structural strength and stability of the support rib 224 can be improved.

[0090] Alternatively, the angle reinforcing rib 225 is not provided.

[0091] In the optional embodiments of the mobile air conditioner described above, the upper surface of the lower air duct plate 220 is coated with a hydrophobic coating.

[0092] Through the arrangement of the hydrophobic coating, the flowability of water can be improved, and the condensate water can be prevented from being retained on the upper surface of the lower air duct plate 220.

[0093] Optionally, the hydrophobic coating includes a graphene coating. The graphene coating has strong hydrophobicity, and can promote the rapid flow of water in the water collecting box 221.

[0094] Optionally, the hydrophobic coating includes a nano super-hydrophobic coating. The nano super-hydrophobic coating has very low surface tension, and liquid is difficult to stay on the surface of the nano super-hydrophobic coating, so as to improve the flowability of water in the water collecting box 221, thereby reducing the adhesion of dust and other dirt on the lower air duct plate 220, and further reducing the possibility of clogging of the water distribution hole 222.

[0095] Alternatively, the upper surface of the lower air duct plate 220 is not provided with a hydrophobic coating.

[0096] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. The person skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A mobile air conditioner characterized by comprising: The utility model relates to a mobile air conditioner, comprising: a housing (100) internally forming a cavity; an outdoor air duct assembly (200) arranged in the cavity, comprising an upper air duct plate (210), a lower air duct plate (220) and a volute (230), the upper air duct plate (210) separating the cavity into an indoor cavity (101) and an indoor-outdoor cavity (102), wherein the indoor cavity (101) is provided with an indoor heat exchanger (310), and the indoor-outdoor cavity (102) is provided with an outdoor heat exchanger (320); a water collecting tray (211) configured on the upper air duct plate (210) for collecting condensed water generated by the indoor heat exchanger (310), wherein a drain hole corresponding to the water collecting tray (211) is formed on the upper air duct plate (210); a water collecting box (221) formed on the lower air duct plate (220) corresponding to the drain hole, the water collecting box (221) being arranged corresponding to the outdoor heat exchanger (320) and extending towards the upper air duct plate (210), wherein a plurality of water distribution holes (222) are formed on the bottom of the water collecting box (221).

2. The mobile air conditioner according to claim 1, wherein: the upper air duct plate (210) and the volute (230) define an air wheel space, and the water collecting box (221) is arranged outside the air wheel space.

3. The mobile air conditioner according to claim 1, wherein: the water distribution holes (222) are arranged in multiple rows along the length direction of the outdoor heat exchanger (320).

4. The mobile air conditioner according to claim 1, wherein: the diameter of the water distribution holes (222) is 2-3 times the distance between adjacent fins of the outdoor heat exchanger (320).

5. The mobile air conditioner according to claim 1, wherein: the lower air duct plate (220) is provided with a sunken part recessed towards the outdoor heat exchanger (320), and the water distribution holes (222) are arranged in the sunken part.

6. The mobile air conditioner according to claim 1, wherein: the upper surface of the lower air duct plate (220) is provided with a first surrounding rib (2221) surrounding the circumferential direction of the water distribution holes (222).

7. The mobile air conditioner according to claim 1, wherein: the lower surface of the lower air duct plate (220) is provided with a second surrounding rib (2222) surrounding the circumferential direction of the water distribution holes (222).

8. The mobile air conditioner according to claim 1, wherein: the lower surface of the lower air duct plate (220) is provided with a supporting rib (224) arranged around the circumferential direction of the outdoor heat exchanger (320) and abutting against the top edge of the outdoor heat exchanger (320).

9. The mobile air conditioner according to claim 8, wherein: the connecting corner between the supporting rib (224) and the lower air duct plate (220) is provided with an angle reinforcing rib (225).

10. The mobile air conditioner according to any one of claims 1-9, wherein: the upper surface of the lower air duct plate (220) is coated with a hydrophobic coating.

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