Unitary air conditioner

Abstract

A unitary air conditioner includes a housing, a heat exchanger, a fan, and an electronic control device. The housing includes an outdoor air outlet and an outdoor air inlet. An outdoor airflow channel is formed between the outdoor air inlet and the outdoor air outlet. The heat exchanger and the fan are provided at the outdoor airflow channel. The fan is configured to drive air to flow from the outdoor air inlet to the outdoor air outlet. The electronic control device is at least partially located in the outdoor airflow channel.

Description

[0001] The present application claims priority to Chinese Patent Applications Nos. 202211061109.7 and 202222313087.0, both filed on Aug. 31, 2022, the entire contents of which are incorporated herein by reference.TECHNICAL FIELD

[0002] The present application relates to the technical field of air conditioners, in particular to a unitary air conditioner.BACKGROUND

[0003] A unitary air conditioner usually includes an electronic control device. The main control board in the electronic control device will generate a large amount of heat when working. If the heat cannot be discharged in time, the operating performance and service life of the main control board will be affected. Existing unitary air conditioners usually choose to configure a cooling fan in an embodiment for the electronic control device to assist the electronic control device in dissipating heat to ensure stable operation and avoid the problem of high temperature burning of electronic control components. However, with the trend of miniaturization design of unitary air conditioners, the internal space of the unitary air conditioner is very limited, and the specially configured cooling fan obviously takes up a lot of layout space, making the internal structure of the unitary air conditioner more complex.TECHNICAL PROBLEM

[0004] The main purpose of the present application is to provide a unitary air conditioner, aiming to simplify the structure of the unitary air conditioner.TECHNICAL SOLUTION

[0005] In order to achieve the above purpose, the unitary air conditioner proposed in the present application includes:

[0006] a housing provided with an outdoor air outlet and an outdoor air inlet; an outdoor airflow channel is formed between the outdoor air inlet and the outdoor air outlet;

[0007] a first heat exchanger provided at the outdoor airflow channel;

[0008] a first fan provided at the outdoor airflow channel and configured to drive air to flow from the outdoor air inlet to the outdoor air outlet; and

[0009] an electronic control device at least partially located in the outdoor airflow channel.

[0010] In an embodiment, the first heat exchanger is provided adjacent to the outdoor air outlet; the first heat exchanger is located on an air outlet side of the first fan; the electronic control device is located on an air inlet side of the first fan.

[0011] In an embodiment, the outdoor air inlets are provided with at least two groups, and the at least two groups of outdoor air inlets are respectively provided at left and right sides of the housing; the outdoor air outlets are provided at a back side of the housing, and the electronic control device is provided between the outdoor air inlet on the left side and the outdoor air inlet on the right side.

[0012] In an embodiment, at least one group of outdoor air inlets is provided at a bottom of the housing.

[0013] In an embodiment, the electronic control device is provided adjacent to a top of the housing.

[0014] In an embodiment, the electronic control device includes a main control board, a heat dissipation structure connected to the main control board, and an electronic control box; the main control board is located in the electronic control box, and the heat dissipation structure is exposed on the electronic control box.

[0015] In an embodiment, the unitary air conditioner further includes a water-slinging structure provided at the outdoor airflow channel, and a water collection receptacle is provided at a bottom of the housing; the water-slinging structure is at least partially located in the water collection receptacle, and configured to strike and sling water in the water collection receptacle to assist the heat dissipation structure in dissipating heat.

[0016] In an embodiment, the first fan includes a first drive member and an axial flow impeller drivingly connected to the first drive member, and the water-slinging structure is configured as the axial flow impeller.

[0017] In an embodiment, the unitary air conditioner further includes an outdoor air duct provided at the housing; the air outlet end of the outdoor air duct is provided toward the outdoor air outlet, and the first fan is provided at the air inlet end of the outdoor air duct.

[0018] In an embodiment, the air outlet end of the outdoor air duct is provided at intervals from the outdoor air outlet, and the first heat exchanger is located between the air outlet end of the outdoor air duct and the outdoor air outlet.

[0019] In an embodiment, the heat dissipation structure is adjacent to the air inlet end of the outdoor air duct, and a blade of the axial flow impeller is provided to partially extend out of the air inlet end of the outdoor air duct.

[0020] In an embodiment, the electronic control device is provided at the bottom of the housing and between the first fan and the first heat exchanger.

[0021] In an embodiment, an installation cavity is provided at the electronic control box, and the main control board is located in the installation cavity; a box air inlet hole is provided at one side of the electronic control box facing the outdoor air inlet, and a box air outlet hole is provided at one side of the electronic control box facing the first fan; the box air inlet hole is in communication with the installation cavity, and the box air outlet hole is in communication with the installation cavity.

[0022] In an embodiment, the heat dissipation structure is located outside the box air outlet hole.

[0023] In an embodiment, the heat dissipation structure includes a plurality of heat dissipation fins; the plurality of heat dissipation fins are spaced apart along a direction perpendicular to an axis of the first fan, and the heat dissipation fins extend along the axis of the first fan.

[0024] In an embodiment, the electronic control device is provided adjacent to a top of the housing, and an opening direction of the box air outlet hole is provided obliquely downward toward a direction close to the first fan.BENEFICIAL EFFECT

[0025] In the technical solution of the present application, by locating the electronic control device in the outdoor airflow channel, the airflow generated when the first fan is working can be directly used to take away the heat generated by the main control board in time, thereby improving the heat dissipation efficiency of the main control board, and guaranteeing its operating performance and service life. Compared with the existing technology, the unitary air conditioner of the present application does not need to be equipped with parts dedicated to assisting the heat dissipation of the electronic control device. It can not only simplify the structure of the unitary air conditioner, but also facilitate the miniaturization design of the unitary air conditioner. It saves the warehousing and logistics costs of special auxiliary parts (such as the cooling fan installed on the electronic control device). It can also reduce the production and assembly process of the unitary air conditioner, which improves the production efficiency of the whole machine, and thereby reducing the manufacturing cost of the whole machine. Secondly, since no special auxiliary parts are configured, the control logic of the unitary air conditioner can be simplified, and the operational reliability of the unitary air conditioner can be improved, thereby reducing the failure rate and after-sales maintenance costs.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the related art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort.

[0027] FIG. 1 is a schematic structural view of a unitary air conditioner according to an embodiment of the present application.

[0028] FIG. 2 is a schematic exploded view of some parts of the unitary air conditioner in FIG. 1.

[0029] FIG. 3 is a schematic partial cross-sectional view of the unitary air conditioner in FIG. 1.

[0030] FIG. 4 is a front view of the unitary air conditioner in FIG. 3.

[0031] FIG. 5 is a top view of the unitary air conditioner in FIG. 1 with a top cover removed.

[0032] FIG. 6 is a cross-sectional view of the unitary air conditioner at A-A in FIG. 5.

[0033] FIG. 7 is a top view of the unitary air conditioner in FIG. 5 with the electronic control device and an internal air duct cover removed.

[0034] FIG. 8 is a cross-sectional view of the unitary air conditioner at B-B in FIG. 7.

[0035] FIG. 9 is a schematic structural view of a water collection tray in FIG. 1.

[0036] FIG. 10 is a schematic structural view of the unitary air conditioner in FIG. 2 after a top cover, a main control board and a part of an electronic control box are removed.

[0037] FIG. 11 is a front view of the unitary air conditioner in FIG. 10.

[0038] Explanation of reference signs:referencereferencesignnamesignname10housing22second heat exchanger 10aindoor air inlet23first fan 10bindoor air outlet231 first drive member 10coutdoor air inlet232 axial flow impeller 10doutdoor air outlet24water-slinging ring 10eoutdoor airflow25second fanchannel11top cover30indoor air duct12water collection tray31inner air duct holder121 water guide receptacle 31adrain outlet121athird wall section311 water reception tray121bfourth wall section312 water block rib121cwater guide slope32inner air duct cover122 water collection40outdoor air ductreceptacle122afirst wall section50electronic control device122bsecond wall section51main control board1221  first receptacle52heat dissipation structuresection1222  second receptacle53electronic control boxsection123 water block flange531 box air inlet hole124 drain through hole532 box air outlet hole125 squeeze structure60compressor21first heat exchanger

[0039] The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the 10 embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0041] It should be noted that if there is a directional indication (such as up, down, left, right, front, back . . . ) in the embodiment of the present application, the directional indication is only configured to explain the relationship between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly.

[0042] In the present application, unless otherwise clearly stated and limited, the terms “connection,”“fixing,” etc. should be understood in a broad sense. For example, “fixing” can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electronical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] In addition, if there are descriptions involving “first,”“second,” etc. in the embodiments of the present application, the descriptions of “first,”“second,” etc. are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as “first” and “second” may explicitly or implicitly include at least one of these features. In addition, if “and / or” appears throughout the text, its meaning includes three parallel plans, taking “A and / or B” as an example, including plan A, or plan B, or A and B is a solution that is satisfied at the same time. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0044] The present application proposes a water collection structure for a unitary air conditioner. Please referring to FIGS. 1 to 3, 5 and 6, the unitary air conditioner includes a water-slinging structure (please referring to the axial flow impeller 232 and / or water-slinging ring 24 in FIG. 3), and the interconnected first heat exchanger 21 and the second heat exchanger 22; the fine dotted lines in FIG. 1 represent the flow direction of part of the air flow in the unitary air conditioner. Please referring to FIGS. 4, 7 to 9, in an embodiment of the present application, the water collection structure includes:

[0045] The water reception tray 311 used to receive the condensed water of the second heat exchanger 22; the water reception tray 311 is provided with a drain outlet 31a; and

[0046] The water collection tray 12 provided with a water guide receptacle 121 and a water collection receptacle 122. One end of the water guide receptacle 121 is connected to the drain outlet 31a, and the other end is connected to the water collection receptacle 122; the water collection receptacle 122 is configured to allow at least part of the water-slinging structure to extend into so that the water in the water collection receptacle 122 is pumped up to the first heat exchanger 21.

[0047] It should be noted that the unitary air conditioner in the embodiment of the present application refers to a movable unitary air conditioner suitable for use at home and in the office, or a unitary air conditioner installed in prefabricated houses and container houses, or a unitary air conditioner installed in a recreational vehicle (RV). It can be understood that the present application does not limit the specific use of the unitary air conditioner. To facilitate understanding, the following description will take a unitary air conditioner installed on an RV as an example.

[0048] In an embodiment, the unitary air conditioner of the RV is usually installed on the upper side of the roof cover of the RV, and the roof cover is provided with a ventilation inlet hole and a ventilation outlet hole. Please referring to FIGS. 1, 2, 6 and 9, in the embodiment of the present application, the unitary air conditioner includes a housing 10, an indoor air duct 30 and a second fan 25. The housing 10 includes a water collection tray 12 and a top cover 11 covering on the water collection tray 12; the housing 10 are provided with an indoor air inlet 10a and an indoor air outlet 10b. One end of the indoor air duct 30 is connected to the indoor air inlet 10a, and the other end is connected to the indoor air outlet 10b; the second fan 25 and the second heat exchanger 22 are provided at the indoor air duct 30. The second fan 25 is used to drive the air to flow from the indoor air inlet 10a to the indoor air outlet 10b. The indoor air inlet 10a is communicated with the ventilation outlet hole, and the indoor air outlet 10b is in communication with the ventilation inlet hole. In this way, the air inside the RV enters the indoor air duct 30 of the unitary air conditioner through the ventilation outlet hole and the indoor air inlet 10a, performs heat exchange with the second heat exchanger 22 in the indoor air duct 30, and then returns to the inside of the RV through the indoor air outlet 10b and the ventilation inlet hole, thereby realizing the function of regulating the internal temperature of the RV.

[0049] Please referring to FIGS. 1 to 3, in the embodiment of the present application, the housing 10 is also provided with an outdoor air outlet 10d and an outdoor air inlet 10c. An outdoor airflow channel 10e is formed between the outdoor air inlet 10c and the outdoor air outlet 10d. The unitary air conditioner also includes a first fan 23 located in the outdoor airflow channel 10e. The first fan 23 is used to drive air to flow from the outdoor air inlet 10c to the outdoor air outlet 10d. The first heat exchanger 21 is located in the outdoor airflow channel 10e. In an embodiment, the RV air conditioner is mainly used to cool down and regulate the temperature inside the vehicle, that is, the unitary air conditioner is in cooling mode. When the unitary air conditioner is in the cooling mode, the first fan 23 continues to work to ensure that the air source outside the unitary air conditioner continuously flows through the outdoor airflow channel 10e and performs efficient heat exchange with the first heat exchanger 21, so that the heat of the first heat exchanger 21 can be taken away in time. When the air in the vehicle flows into the indoor air duct 30 and performs heat exchange with the second heat exchanger 22, part of the air will condense to form water droplets, and then drip or flow into the water reception tray 311 under the action of gravity. When the condensed water in the water reception tray 311 reaches a certain scale, it will naturally flow to the drain outlet 31a, flow into the water guide receptacle 121 of the water collection tray 12 through the drain outlet 31a, and then flow into the water collection receptacle 122. That is, after the unitary air conditioner is installed on the top of the RV, the bottom of the water collection receptacle 122 is at the lowest or close to the lowest position, so that gravity can be used to allow the condensed water to flow and be concentrated in the water collection receptacle 122, thereby ensuring the water level in the water collection receptacle 122. On this basis, the water-slinging structure of the unitary air conditioner can throw the condensed water accumulated in the water collection receptacle 122 to the surroundings, and cause part of the condensed water to splash on the first heat exchanger 21, so as to utilize the condensed water to take away the heat on the first heat exchanger 21, thereby improving the heat dissipation efficiency of the first heat exchanger 21.

[0050] In an embodiment, the second fan 25 includes a second drive member and a cross-flow impeller drivingly connected to the second drive member. The axis of the cross-flow impeller intersects with the distribution direction of the indoor air inlet 10a and the indoor air outlet 10b. In an embodiment, the second drive member may be one of a driving motor, a hydraulic motor or a pneumatic motor. In this way, the size of the second fan 25 is smaller, which is conducive to the miniaturization design of the unitary air conditioner. Moreover, the cross-flow impeller can blow the air to a farther indoor area, and the air output is softer, thereby improving the user experience.

[0051] It is easy to understand that if the unitary air conditioner is in the heating mode, that is, the second heat exchanger 22 heats the air in the RV, at this time, the first heat exchanger 21 has no heat dissipation demand, so even if no condensed water is generated on the second heat exchanger 22, nor does it affect the overall heat exchange efficiency of the unitary air conditioner. To facilitate understanding, the following description will take the unitary air conditioner in cooling mode as an example.

[0052] In the technical solution of the present application, the condensed water generated on the second heat exchanger 22 is collected through the water collection receptacle 122 on the water collection tray 12, and the water-slinging structure is used to throw the condensed water accumulated in the water collection receptacle 122 toward the first heat exchanger 22. The heat exchanger 21 can make full use of the condensed water to assist the first heat exchanger 21 in dissipating heat, thereby improving the heat dissipation efficiency of the first heat exchanger 21 and thereby improving the overall heat exchange efficiency of the unitary air conditioner.

[0053] It should be noted that the water reception tray 311 and the water collection tray 12 may be provided separately. For example, please referring to FIGS. 6 and 8, in an embodiment, the water reception tray 311 is integrally formed with the indoor air duct 30, and the indoor air duct 30 is installed on the water collection tray 12. The drain outlet 31a is located on the bottom wall of the water reception tray 311, and the water guide receptacle 121 is located on the lower side of the drain outlet 31a. In an embodiment, the indoor air duct 30 includes an inner air duct holder 31 and an inner air duct cover 32 covering the inner air duct holder 31. The water reception tray 311 is integrally formed with the inner air duct holder 31 and is located between the indoor air inlet 10a and the outdoor air inlet 10c. The second heat exchanger 22 is provided at the upper side of the water reception tray 311. Of course, in other embodiments, the water reception tray 311 and the water collection tray 12 may also be integrally formed and configured as a chassis of a unitary air conditioner.

[0054] Understandably, on the one hand, in order to reduce the wind resistance of the vehicle and achieve the lightweight of the vehicle, the design trend of RV air conditioners must be towards miniaturization. Therefore, the internal layout space of the unitary air conditioner is very limited, which leads to the obvious limitation of the design parameters of parts of the first fan 23 and the first heat exchanger 21, such as the shape, size and power. On the other hand, the indoor space of the RV is large and the internal structure is complex, so the demand for cooling capacity is relatively large. If only the first fan 23 is relied on to dissipate the heat of the first heat exchanger 21, the overall heat exchange efficiency of the unitary air conditioner will be low, resulting in the overall air conditioner being unable to meet the user's cooling needs. The unitary air conditioner in the embodiment of the present application can make full use of the collected condensed water to assist the first heat exchanger 21 to dissipate heat without significantly increasing the size of the unitary air conditioner, or even increasing the size, and significantly improves the heat exchange efficiency of the whole machine, thereby not only meeting the miniaturization design requirements of the RV air conditioner, but also satisfying the user's cooling needs well.

[0055] In an embodiment, there are various structural forms of the water-slinging structure. For example, please referring to FIGS. 3, 4 and 6, in an embodiment, the first fan 23 includes a first drive member 231 and an impeller drivingly connected to the first drive member 231. The water-slinging structure includes the impeller of the first fan 23. In an embodiment, the first drive member 231 may be one of a driving motor, a hydraulic motor or a pneumatic motor, and the impeller may be one of an axial flow impeller, a cross flow impeller or a centrifugal impeller. In an embodiment, the impeller is configured as an axial flow impeller 232. The free end of the blades on the axial flow impeller 232 (that is, the end away from the axis) can invade the condensed water in the water collection receptacle 122 when rotating to the lowest point, so that some of the thrown-up condensed water directly splashes onto the first condenser, and some is blown towards the first condenser by the air flow, thus it serves the purpose of assisting the first condenser in dissipating heat. Of course, in other embodiments, the impeller can also be configured as a centrifugal impeller or a cross-flow impeller, as long as the blades of the impeller can splash the condensed water in the water collection receptacle 122 toward the first condenser.

[0056] Please referring to FIGS. 3, 4 and 6, further, the water-slinging structure further includes a water-slinging ring 24. The water-slinging ring 24 is connected to the free end of the blade of the axial flow impeller 232 and is located close to the first heat exchanger 21. In this way, the water-slinging ring 24 rotates following the rotation of the impeller, thereby knocking the condensed water in the water collection receptacle 122 into the air, and makes full use of the air kinetic energy in the outdoor airflow channel 10e to allow more condensed water to fly to the first heat exchanger 21, thereby further improving the heat dissipation efficiency of the first heat exchanger 21. It should be noted that the water-slinging ring 24 refers to a structure in which the water-slinging structure is a closed ring or a substantially ring-shaped structure. That is, the water-slinging structure does not necessarily have to be a closed ring structure, and can be multiple sections of arc-shaped brackets connected to the free end of the blade. Multiple sections of arc-shaped brackets are spaced apart along the axial direction of the impeller and form a roughly annular structure. It should be noted that the water-slinging structure is at least partially located within the water collection receptacle 122, which means that during the rotation of the water-slinging structure, the point on its outer edge farthest from the axis will invade the water collection receptacle 122, thereby lifting the condensed water inside the water collection receptacle 122. In this way, the blades on the first fan 23 and the water-slinging ring 24 will bring up the condensed water in the water collection receptacle 122 during the rotation process, thereby further improving the auxiliary heat exchange effect of the condensed water on the first heat exchanger 21. Of course, in other embodiments, the water-slinging structure may also include only the water-slinging ring 24 or only the impeller.

[0057] Please referring to FIGS. 3 and 4, in order to ensure that the water-slinging ring 24 can maintain smooth operation and reliability for a long time, in an embodiment, the distance between the outer edge of the water-slinging ring 24 and the bottom surface of the water collection receptacle 122 is set as e, and 7 mm≤e≤10 mm. For example, e can take the value 7.5 mm, 8 mm or 9 mm, etc. It should be noted that the bottom surface of the water collection receptacle 122 refers to the bottom surface of the receptacle located directly below the water-slinging structure, and e represents the distance between the lowest point of the part where the water-slinging ring 24 penetrates into the water collection receptacle 122 and the bottom surface of the receptacle. Understandably, if the value of e is too small, it may cause motion interference between the water-slinging ring 24 and the bottom wall of the water collection receptacle 122 under the influence of parts manufacturing tolerances and assembly tolerances, thereby affecting the normal operation of the water-slinging ring 24 and the first fan 23. Secondly, considering that after long-term use of the unitary air conditioner, foreign matter such as sediment may be deposited in the water collection receptacle 122, causing the water pump ring 24 to interfere with the movement of the foreign matter and unable to operate normally, so the value of e cannot be too small. If the value of e is too large, the diameter of the corresponding impeller will be significantly smaller, thereby reducing the heat dissipation effect of the first fan 23 on the first heat exchanger 21.

[0058] Please referring to FIGS. 3 and 4, in an embodiment, the distance between the outer edge of the water-slinging ring 24 and the top surface of the side wall of the water collection receptacle 122 is set to E, and 1.5 e≤E≤3 e. For example, E can take the value of 11 mm, 15 mm, 20 mm or 25 mm, etc. It should be noted that the top surface of the receptacle side wall refers to the top surface closest to the bottom surface of the receptacle, that is, the top surface corresponds to the maximum height of the water collection receptacle 122; E represents the distance between the lowest point that the water-slinging ring 24 penetrates into the water collection receptacle 122 and the top surface of the side wall of the receptacle, that is, E represents the penetration depth of the water-slinging ring 24 in the water collection receptacle 122. It can be understood that if the value of E is too small, the amount of water that the water-slinging ring 24 can pump up is relatively limited, resulting in insufficient water pumping effect; if the value of E is too large, it means that the height of the side wall of the water collection receptacle 122 is relatively high, thereby causing the adverse effect of reducing the cross-sectional area of the outdoor airflow channel 10e, that is, reducing the ventilation air volume in the outdoor airflow channel 10e. In the technical solution of the present application, by setting 7 mm≤e≤10 mm and 1.5 e≤E≤3 e, the whole machine can obtain a large outdoor ventilation air volume and at the same time obtain an excellent water pumping effect to assist the heat dissipation of the first heat exchanger 21, thereby comprehensively improving the heat exchange efficiency of the entire machine.

[0059] Please referring to FIGS. 3, 4 and 9, in order to further improve the auxiliary effect of condensed water on heat dissipation of the first heat exchanger 21, in an embodiment, the water collection receptacle 122 includes a first receptacle section 1221 and a second receptacle section 1222 distributed along the first direction. The first receptacle section 1221 is connected with the water guide receptacle 121, and the receptacle bottom surface of the first receptacle section 1221 is lower than the receptacle bottom surface of the second receptacle section 1222. The water-slinging structure is located in the first receptacle section 1221, and the first heat exchanger 21 is located in the second receptacle section 1222. In this way, on the premise of ensuring that the water-slinging structure can pump a sufficient amount of water, the bottom end of the first heat exchanger 21 is immersed in the condensed water in the second receptacle section 1222 to further improve the auxiliary heat dissipation effect of the condensed water. It should be noted that the distinction between high and low in the technical solution of the present application refers to the height difference of each component on the unitary air conditioner relative to the horizon with the horizon as a reference, when the unitary air conditioner is correctly installed and ready for use, for example, after the RV air conditioner is correctly installed on the top of the RV. It is easy to understand that the distance between the outer edge of the water-slinging ring 24 and the receptacle bottom surface of the first receptacle section 1221 is the distance e between the outer edge of the water-slinging ring 24 and the receptacle bottom surface of the water collection receptacle 122. Of course, in other embodiments, the water collection receptacle 122 can also be provided with only the first receptacle section 1221, and the water-slinging structure and the first heat exchanger 21 are both located in the first receptacle section 1221; or, the water-slinging structure is located in the first receptacle section 1221, and the first heat exchanger 21 is located outside the water collection receptacle 122.

[0060] Please referring to FIGS. 3, 4 and 9, in an embodiment, the outdoor air outlet 10d is located on the side of the housing 10. The side wall of the water collection receptacle 122 includes a connected first wall section 122a and a second wall section 122b. The first wall section 122a is provided close to the outdoor air outlet 10d, and the second wall section 122b is connected to the side wall of the water guide receptacle 121. The first wall section 122a is configured with the same structure as the lower side edge of the outdoor air outlet 10d. In an embodiment, the top cover 11 of the housing 10 is spliced with the first wall section 122a and an outdoor air outlet 10d is formed at the splicing point. In this way, the first wall section 122a is directly used as the lower edge of the outdoor air outlet 10d, so that the structure of the housing 10 is simplified, thereby reducing the manufacturing cost of the unitary air conditioner. Moreover, in the embodiment where the first heat exchanger 21 is located in the second receptacle section 1222, the first heat exchanger 21 can also be provided at an area closer to the outdoor air outlet 10d, which is beneficial to the arrangement of the internal parts of the unitary air conditioner being more compact in the first direction. Of course, in other embodiments, the side edges of the water collection tray 12 can also be folded upward with reinforced flanges. The reinforced flanges are configured with the same structure as the lower side edge of the outdoor air outlet 10d, and the first wall section 122a and the reinforced flanges are provided at intervals along the first direction.

[0061] In an embodiment, the height of the first wall section 122a is less than the height of the second wall section 122b. That is to say, the first wall section 122a is shorter than the second wall section 122b. When the water level in the water collection receptacle 122 is high, the water will preferentially overflow through the first wall section 122a and flow to the outside of the unitary air conditioner, thereby preventing the problem of water accumulation occurring in the area on the water collection tray 12 except the water collection receptacle 122. Of course, in other embodiments, the height of the top surface of the first wall section 122a may be greater than or equal to the height of the top surface of the second wall section 122b.

[0062] Please referring to FIG. 9, in an embodiment, the side wall of the water guide receptacle 121 includes a connected third wall section 121a and a fourth wall section 121b. The third wall section 121a is located close to the indoor air inlet 10a, and the fourth wall section 121b is connected to the second wall section 122b. The height of the third wall section 121a is greater than the height of the fourth wall section 121b. The height of the fourth wall section 121b is greater than or equal to the height of the second wall section 122b. That is, the third wall section 121a is higher than the fourth wall section 121b, the first wall section 122a and the second wall section 122b. In this way, even if the water levels in the water collection receptacle 122 and the water guide receptacle 121 are high, causing the water in them to overflow, it will also preferentially overflow from other positions to the outside of the receptacle, rather than overflowing from the third wall section 121a to the outside of the receptacle, thereby reducing the risk of condensed water flowing into the indoor space of the RV through the indoor air inlet 10a. Of course, in other embodiments, the heights of the third wall section 121a, the fourth wall section 121b, and the second wall section 122b can also be provided to be level.

[0063] Please referring to FIGS. 6 and 8, in an embodiment, the height difference between the bottom surface of the water reception tray 311 and the top surface of the first wall section 122a is set to d, 0<d≤6 mm. For example, d can take a value of 3 mm, 4 mm, or 5 mm, etc. That is, the bottom surface of the water reception tray 311 is higher than the top surface of the first wall section 122a. In this way, the condensed water in the water reception tray 311 can be more smoothly discharged from the drain outlet 31a to the water guide receptacle 121 in time; and then the condensed water can flow into the water collection receptacle 122 backwards in time; and even if the water level in the water collection receptacle 122 is too high and causes the condensed water to overflow, for example, when it overflows from the first wall section 122a to the outside of the housing 10, the water in the water collection receptacle 122 and the water guide receptacle 121 will not flow into the water reception tray 311, thereby avoiding the problem that the water level in the water reception tray 311 is too high and overflows everywhere. It can be understood that under the condition that the internal height dimensions of the housing 10 are the same, if the bottom surface of the water reception tray 311 is set too high, the structure of the water reception tray 311 will occupy the height space, resulting in a reduction in the height size of the second condenser, thereby being not conducive to the heat exchange efficiency of the second condenser.

[0064] Please referring to FIGS. 6 and 7, in an embodiment, the water reception tray 311 has a water block rib 312 close to the indoor air inlet 10a. The height difference between the top surface of the water block rib 312 and the bottom surface of the water reception tray 311 is set as D, 2 d≤D≤6 d. For example, D can take values of 6 mm, 8 mm, 10 mm, 15 mm, 20 mm or 30 mm, etc. In this way, if the water reception tray 311 is not drained smoothly, resulting in too much condensed water stored in the water reception tray 311, even if the unitary air conditioner is driven to shake violently while the RV is driving, the rippling condensed water in the water reception tray 311 will not flow past the water block ribs 312 to the indoor air inlet 10a, and will fall downward into the indoor space of the RV from the indoor air inlet 10a. It is easy to understand that since the water block ribs 312 are located between the indoor air inlet 10a and the second heat exchanger 22, that is, the air flow flowing from the indoor air inlet 10a to the second heat exchanger 22 will be interfered by the water block ribs 312. Therefore, if the height of the water block ribs 312 is set too high, it will significantly block the air inlet from the indoor air inlet 10a, which will be detrimental to the heat exchange effect of the second heat exchanger 22.

[0065] Please referring to FIG. 9, in order to further reduce the risk of condensed water flowing into the indoor air inlet 10a, in an embodiment, a water block flange 123 is protruding from the inner edge of the indoor air inlet 10a. The side of water guide receptacle 121 is provided at the side of the water block flange 123 away from the indoor air inlet 10a, and is spaced apart from the water block flange 123. That is to say, a water block flange 123 is added around the indoor air inlet 10a as a waterproof line. Even if a small amount of condensed water overflows from the third wall section 121a to the outside of the receptacle, it will be intercepted by the water block flange 123, thereby preventing condensed water from entering the indoor air inlet 10a.

[0066] Please referring to FIGS. 7 and 9, in order to solve the problem of condensed water overflowing to the outside of the receptacle and accumulating in the area of the water collection tray 12 located outside the receptacle, in an embodiment, a plurality of drain through holes 124 are spaced at the bottom of the water collection tray 12. At least one drain through hole 124 is provided outside the water collection receptacle 122. In an embodiment, the hole diameter of the drain through hole 124 is greater than or equal to 20 mm. In an embodiment, the unitary air conditioner on the top of the RV usually has a gap with the roof. That is, the bottom of the housing 10 of the unitary air conditioner is only connected and fixed with the edge of the ventilation inlet and ventilation holes on the roof, while other areas at the bottom of the housing 10 have gaps with the vehicle roof. In this way, by directly opening the drain through holes 124 at the bottom of the water collection tray 12, the condensed water that accidentally overflows the water collection receptacle 122 or the water guide receptacle 121 can flow to the outside of the housing 10 through these drain through holes 124, and pass through the gap between the housing 10 and the car roof. It is worth mentioning that if rainwater accidentally enters the housing 10 through the outdoor air inlet 10c and accumulates in the area of the water collection tray 12 outside the receptacle, it can be drained away in time through these drain through holes 124. In an embodiment, at least one drain through hole 124 is located outside the water guide receptacle 121. In this way, drain through holes 124 can be provided at the outsides of the water guide receptacle 121 and the water collection receptacle 122, so that overflowing condensed water or rainwater that accidentally enters the housing 10 can be drained away faster. It is worth mentioning that the drain through hole 124 can also be used as a part of the outdoor air inlet 10c, that is, the air enters the outdoor airflow channel 10e through the drain through hole 124. Of course, in other embodiments, the drain through hole 124 may also be provided only outside the receptacle of the water collection receptacle 122, or the drain through hole 124 may be provided only outside the receptacle of the water guide receptacle 121.

[0067] Please referring to FIGS. 3 and 9, in an embodiment, a squeeze structure 125 is protruding from the bottom surface of the water collection receptacle 122. The squeeze structure 125 is used to reduce the water storage volume of the water collection receptacle 122. In this way, the water storage volume of the water collection receptacle 122 can be reduced by the squeeze structure 125, so that the condensed water can be more concentrated in the water collection receptacle 122, and the height of the water surface can be raised under the condition of the same volume of condensed water, thereby ensuring the water level height required by the water-slinging structure when pumping water. In an embodiment, when the unitary air conditioner cools the indoor space of the RV, since the indoor space is well sealed and the space volume is smaller compared to that of a residence, the dehumidification capacity of the second heat exchanger 22 when running is limited, and the condensed water produced is also limited. By arranging the squeeze structure 125, the water storage level of a small amount of condensed water can be raised, so that the water-slinging structure can pump water and continue to operate, thereby making the unitary air conditioner more suitable for use in RVs. In an embodiment, the squeeze structure 125 may be configured as a boss or an annular rib. It is worth mentioning that when the squeeze structure 125 is configured as a boss, the top surface of the boss can also serve as a supporting surface for other parts. For example, the bottom of the first fan 23 is supported on the boss.

[0068] In an embodiment, there are multiple squeeze structures 125, and the multiple squeeze structures 125 are integrally formed with the water collection tray 12. In this way, the structure of the unitary air conditioner can be simplified and its manufacturing cost can be reduced. Of course, in other embodiments, the squeeze structure 125 can also be assembled separately from the water collection tray 12, that is, the squeeze structure 125 and the water collection tray 12 are two separate parts and then assembled together, such as the squeeze structure 125 is configured as a rubber pad or other parts that are not easy to absorb water, and the rubber pad is bonded to the bottom surface of the water collection tray 12.

[0069] Please referring to FIGS. 4 and 8, in order to improve the collection efficiency of condensed water, in an embodiment, the water guide receptacle 121 extends downward in a direction close to the water collection receptacle 122. In this way, the condensed water flowing into the water guide receptacle 121 from the drain outlet 31a of the water reception tray 311 will naturally flow downward into the water collection receptacle 122 under the action of gravity, thereby improving the collection efficiency and effect of the condensed water by the water collection receptacle 122. In an embodiment, the second heat exchanger 22 and the first heat exchanger 21 are provided at sequence along the first direction, and the front and back of the RV are provided at sequence along the first direction; that is, the first direction refers to the direction extending from front to back, and the water guide receptacle 121 extends downward obliquely along the first direction. In this way, the acceleration during the traveling process of the RV can also allow the condensed water to flow more quickly and be collected in the water collection receptacle 122 for use by the water-slinging structure. Of course, in other embodiments, the first direction may also be provided parallel to the left and right directions of the RV.

[0070] Please referring to FIGS. 4, 8 and 9, in an embodiment, at least two water guide receptacles 121 are provided. At least two water guide receptacles 121 are provided at opposite sides of the indoor air outlet 10b in the second direction. The second direction is intersected with the first direction. In an embodiment, the first direction and the second direction are provided perpendicularly or nearly perpendicularly, that is, the first direction extends along the front and back directions of the RV, and the second direction extends along the left and right directions of the RV. In this way, the collection speed of condensed water can be increased through the plurality of water guide receptacles 121, thereby ensuring that the water level in the water collection receptacle 122 is continuously maintained at a suitable height. It should be noted that, in the embodiments of the present application, multiple refers to two or more. Of course, in other embodiments, only one water guide receptacle 121 may be provided.

[0071] Please referring to FIGS. 4, 8 and 9, in an embodiment, at least two ends of the water guide receptacles 121 close to the water collection receptacle 122 are in communication with form a water guide slope 121c. The water guide slope 121c is communicated with the water collection receptacle 122. That is, the ends of the plurality of water guide receptacles 121 are in communication with form a water guide slope 121c with a large bottom area, and then the ends of the water guide slope 121c are communicated with the water collection receptacle 122. It is easy to understand that if the condensed water flowing in each water guide receptacle 121 is sparse, the flow speed of the small water flow will be relatively slow. When the water in multiple water guide receptacles 121 converges into a larger water flow, the flow speed of the large water flow will be significantly improved, which is beneficial to allowing the condensed water generated on the second heat exchanger 22 to flow and be collected into the water collection receptacle 122 in a timely manner. In an embodiment, a squeeze structure 125 is also provided at the water guide slope 121c. Of course, in other embodiments, each water guide receptacle 121 can be communicated with the water collection receptacle 122 respectively, that is, the water in each water guide receptacle 121 flows to the water collection receptacle 122 separately, and then is collected together in the water collection receptacle 122.

[0072] The present application also proposes a unitary air conditioner, including the aforementioned water collection structure. The specific structure of the water collection structure refers to the above embodiments. Since this unitary air conditioner adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0073] In an embodiment, the unitary air conditioner also includes an electronic control device 50. The electronic control device 50 includes a main control board 51. The main control board 51 will generate a large amount of heat when working. If the heat cannot be discharged in time, it will significantly affect the operating performance and service life of the main control board 51. Therefore, the existing unitary air conditioner will choose to configure a cooling fan in an embodiment for the electronic control device 50 to assist in its heat dissipation. Please referring to FIGS. 1 to 4, in the embodiment of the present application, the electronic control device 50 is at least partially located in the outdoor airflow channel 10e. In this way, the airflow generated when the first fan 23 is working can be directly used to take away the heat generated by the main control board 51 in time, thereby improving the heat dissipation efficiency of the main control board 51 and ensuring its operating performance and service life. Compared with the related art, the unitary air conditioner of the present application does not need to be equipped with parts dedicated to auxiliary heat dissipation of the electronic control device 50, which can simplify the structure of the unitary air conditioner, thereby facilitating the miniaturization design of the unitary air conditioner, saving the warehousing and logistics costs of special auxiliary parts (such as the cooling fan provided at the electronic control device 50), reducing the production and assembly process of the unitary air conditioner, and improving the production efficiency of the whole machine, and thereby reducing the manufacturing cost of the whole machine. Secondly, since no special auxiliary parts are configured, the control logic of the unitary air conditioner can be simplified, the operational reliability of the unitary air conditioner can be improved, and the failure rate and after-sales maintenance costs can be reduced.

[0074] Please referring to FIGS. 3, 4 and 6, in an embodiment, the first heat exchanger 21 is provided adjacent to the outdoor air outlet 10d. The first heat exchanger 21 is located on the air outlet side of the first fan 23, and the electronic control device 50 is located on the air inlet side of the first fan 23. In this way, the electronic control device 50 can be prevented from blocking the air flow to the first heat exchanger 21, thereby ensuring good heat exchange efficiency of the first heat exchanger 21. Moreover, the arrangement of the internal parts of the air conditioner in the first direction can also be made more compact. Of course, in other embodiments, the electronic control device 50 may also be provided between the first fan 23 and the first heat exchanger 21.

[0075] Please referring to FIGS. 3, 5, 6 and 9, in an embodiment, at least two groups of outdoor air inlets 10c are provided. At least two groups of outdoor air inlets 10c are respectively provided at the left and right sides of the housing 10. The outdoor air outlet 10d is provided at the back side of the housing 10, and the electronic control device 50 is provided between the outdoor air inlet 10c on the left and the outdoor air inlet 10c on the right. It should be noted that for the RV air conditioner, the left and right sides of the housing 10 refer to, after the unitary air conditioner is installed on the top of the RV, the left side of the housing 10 corresponding to the left side of the vehicle, the right side of the housing 10 corresponding to the right side of the vehicle, and the back side of the housing 10 corresponding to one back side of the vehicle. In this way, by simultaneously injecting air into multiple sets of outdoor air inlets 10c, the air inlet volume in the outdoor airflow channel 10e can be increased, thereby improving the heat exchange efficiency of the first heat exchanger 21. Secondly, the outdoor air outlet 10d is provided at the back side of the housing 10. Regardless of whether the vehicle is driving or not, the airflow in the outdoor airflow channel 10e can flow out of the outdoor air outlet 10d smoothly. Furthermore, the airflow flowing in from the outdoor air inlets 10c on the left and right sides will flow through the electronic control device 50 located in the middle, thereby enhancing the effect of the airflow in taking away heat from the electronic control device 50, and thereby improving the heat dissipation efficiency of the electronic control device 50. Of course, in other embodiments, only one group of outdoor air inlets 10c may be provided; the outdoor air outlets 10d may be provided at the left, right or lower side of the housing 10; and the electronic control device 50 may be provided close to the outdoor air inlets 10c.

[0076] Please referring to FIGS. 3, 4, 6, 10 and 11, the fine dotted lines in FIGS. 10 and 11 represent the flow direction of part of the airflow in the unitary air conditioner; in an embodiment, the electronic control device 50 is provided adjacent to the top of the top cover 11 of the housing 10. That is, the electronic control device 50 is provided at a higher position. In this way, it can avoid the problem that rainwater entering the housing 10 through the outdoor air inlet 10c flies into the electronic control box 53 and causes the main control board 51 to be damaged by water droplets. It is worth mentioning that the unitary air conditioner also includes a compressor 60 connected between the first heat exchanger 21 and the second heat exchanger 22. The compressor 60 and the electronic control device 50 are respectively located on the left and right sides of the first fan 23. In this way, the limited layout space in the housing 10 can be rationally utilized, thereby making the internal parts of the unitary air conditioner more compact, which is beneficial to the miniaturization design of the unitary air conditioner. Of course, in other embodiments, the electronic control device 50 can also be provided at the water collection tray 12; or the electronic control device 50 can be located inside the outdoor air inlet 10c, that is, the electronic control device 50 can be provided adjacent to the outdoor air inlet 10c. The airflow reaches the electronic control device 50 immediately after entering the outdoor air inlet 10c.

[0077] Please referring to FIGS. 2 to 4 and 6, in order to further improve the heat dissipation efficiency of the electronic control device 50, in the embodiment where the unitary air conditioner is provided with a water collection receptacle 122 and a water-slinging structure, the electronic control device 50 also includes the heat dissipation structure 52 connected with the main control board 51, and the electronic control box 53. The main control board 51 is located in the electronic control box 53. The heat dissipation structure 52 is exposed on the electronic control box 53 and is located close to the water-slinging structure. In this way, when the water-slinging structure hits the condensed water in the water collection receptacle 122 and causes it to splash around, part of the condensed water will be directly thrown toward the heat dissipation structure 52 and drip to the bottom of the housing 10 under the action of gravity. In this process, the condensed water can take away the heat of the heat dissipation structure 52, thereby improving the heat dissipation efficiency of the heat dissipation structure 52. The airflow generated by the first fan 23 and the splashing condensed water generated by the water-slinging structure jointly promote the heat dissipation of the electronic control device 50, thereby improving the overall heat dissipation efficiency of the electronic control device 50. Of course, in other embodiments, the unitary air conditioner may not be provided with a water-slinging structure or a water collection structure, but only utilizes the airflow of the outdoor airflow channel 10e to quickly take away the heat of the electronic control device 50, thereby improving the heat dissipation efficiency of the electronic control device 50.

[0078] Please referring to FIGS. 2, 6, 10 and 11, in an embodiment, the electronic control box 53 is provided with an installation cavity. The main control board 51 is located in the installation cavity. The side of the electronic control box 53 facing the outdoor air inlet 10c is provided with a box air inlet hole 531, and a box air outlet hole 532 is provided at the side of the electronic control box 53 facing the first fan 23. The box air inlet hole 531 is communicated with the installation cavity, and the box air outlet hole 532 is communicated with the installation cavity. In an embodiment, the left and right sides of the electronic control box 53 respectively correspond to an outdoor air inlet 10c, so box air inlet holes 531 are provided at both left and right sides. In this way, the air flow flowing in from the outdoor air inlets 10c on both sides can also flow into the electronic control box 53 through the box air inlet holes 531 on both sides, then flow through the main control board 51, and then flow out through the box air outlet holes 532, thereby taking away the heat on the main control board 51 quickly in time, and further improving the heat dissipation efficiency of the electronic control device 50. Of course, in some embodiments, the electronic control box 53 may not be provided with the box air inlet hole 531 and the box air outlet hole 532, and only allows the air flow to flow through the exposed heat dissipation structure 52. In other embodiments, the box air inlet hole 531 is only provided at one side of the electronic control box 53, such as the left or right side.

[0079] In the embodiment of the present application, the entire electronic control device 50 can be installed in the outdoor airflow channel 10e, and then the airflow entering the installation cavity is used to take away the heat on the main control board 51 in time. At this time, the heat dissipation structure 52 is optional. Of course, the electronic control device 50 can also expose the heat dissipation structure 52 in the outdoor airflow channel and hide the rest.

[0080] Please referring to FIGS. 6, 10 and 11, in an embodiment, the heat dissipation structure 52 is located outside the box air outlet hole 532. In this way, the heat dissipation structure 52 can block the splashed condensed water from entering the box air outlet hole 532, thereby preventing the condensed water from entering the electronic control box 53 and causing damage to the main control board 51. In addition, the air flowing out from the electronic control box 53 will first pass through the heat dissipation structure 52 and then flow to the first fan 23, thereby further improving the heat dissipation efficiency of the heat dissipation structure 52.

[0081] In an embodiment, the heat dissipation structure 52 has a variety of structural forms. For example, Please referring to FIGS. 2, 6 and 10, in an embodiment, the heat dissipation structure 52 includes a plurality of heat dissipation fins. The plurality of heat dissipation fins are provided and spaced apart in a direction perpendicular to the axis of the first fan 23, and the heat dissipation fins extend along the axis of the first fan 23. In this way, the heat dissipation area can be increased through multiple heat dissipation fins, and the heat can be taken away more quickly. Moreover, the heat dissipation fins extend along the axis direction of the first fan 23, so that the air flow channel between two adjacent heat dissipation fins can be extending toward the first fan 23, and the air flowing out from the electronic control box 53 can flow through the heat dissipation fins and toward the first fan 23 more smoothly. In an embodiment, a plurality of heat dissipation fins are provided at intervals along the left and right directions. Of course, in some embodiments, multiple heat dissipation fins may also be provided at intervals along the up and down direction. In other embodiments, the heat dissipation fins may also be perpendicular to the axis direction of the first fan 23. In some embodiments, the heat dissipation structure 52 may also include a heat dissipation plate extending in the left and right directions, with a plurality of ventilation holes spaced on the heat dissipation plate.

[0082] Referring to FIG. 6, in an embodiment, the electronic control device 50 is provided adjacent to the top of the housing 10, and the opening direction of the box air outlet hole 532 is inclined and extends downward toward the direction close to the first fan 23. In this way, the air flowing out from the box air outlet hole 532 can smoothly flow obliquely downward toward the first fan 23, allowing more air to flow toward the first fan 23 and improving the smoothness and stability of the air flow field in the outdoor airflow channel 10e, thereby ensuring the heat exchange efficiency of the first heat exchanger 21.

[0083] Please referring to FIGS. 2 to 6, in an embodiment, the unitary air conditioner further includes an outdoor air duct 40 located in the housing 10. The outdoor airflow channel 10e is partially formed in the outdoor air duct 40. The outdoor air duct 40 is located at the side of the water collection receptacle away from the outdoor air outlet 10d; the blade portion of the axial flow impeller 232 extends out of the air outlet end of the outdoor air duct 40, and can extend into the water collection receptacle 122 to fetch water. In this way, the stability of the air flow field in the outdoor airflow channel 10e can be improved, and the air flow blown to the first heat exchanger 21 can be more concentrated, thereby preventing changes in the external air flow field from having a significant impact on the internal flow field during vehicle driving, thereby ensuring the heat exchange efficiency of the first heat exchanger 21. It is worth mentioning that a squeeze structure 125 is protruding from the bottom surface of the water collection tray 12, and in an embodiment in which the squeeze structure 125 is configured as a boss, the bottom of the outdoor air duct 40 is at least partially supported on the boss. Of course, in other embodiments, the outdoor air duct 40 may not be provided.

[0084] Please referring to FIGS. 4 and 6, in an embodiment, the air outlet end of the outdoor air duct 40 is spaced apart from the outdoor air outlet 10d, and the first heat exchanger 21 is located between the air outlet end of the outdoor air duct 40 and the outdoor air outlet 10d. In this way, on the premise of ensuring that the air flow can flow to the first heat exchanger 21 more concentratedly, the structure of the outdoor air duct 40 is simplified, thereby reducing the manufacturing cost of the unitary air conditioner. Of course, in other embodiments, the air outlet end of the outdoor air duct 40 can also be abutted against the inner edge of the outdoor air outlet 10d, and the first heat exchanger 21 is located in the outdoor air duct 40.

[0085] Please referring to FIG. 6, in an embodiment, the heat dissipation structure 52 is adjacent to the air inlet end of the outdoor air duct 40. The first fan 23 includes an axial flow impeller 232. The blade portion of the axial flow impeller 232 extends out of the air inlet end, and water can be thrown towards the heat dissipation structure 52. In this way, a part of the blade extending out of the outdoor air duct 40 can throw the condensed water toward the heat dissipation structure 52, thereby ensuring that the condensed water kicked up by the water-slinging structure can still have a cooling effect on the heat dissipation structure 52. Of course, in some embodiments, the heat dissipation structure 52 can also be provided at the air inlet end of the outdoor air duct 40, so that the condensed water thrown up by the water-slinging structure can smoothly splash towards the heat dissipation structure 52 also located in the outdoor air duct 40. In other embodiments, the heat dissipation structure may be located between the first fan and the first heat exchanger. In this case, the condensed water thrown up by the water-slinging structure may not be required to splash directly toward the heat dissipation structure, but the condensed water thrown up may be blown toward the heat dissipation structure through the air flow blown toward the first heat exchanger.

[0086] The above are only some embodiments of the present application, and do not limit the patent scope of the present application. Under the inventive concept of the present application, the equivalent structural transformations made by using the description of the present application and the contents of the accompanying drawings, or directly / indirectly used in other relevant technical fields, are all included in the protection scope of the present application.

Examples

Embodiment Construction

[0040]The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the 10 embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0041]It should be noted that if there is a directional indication (such as up, down, left, right, front, back . . . ) in the embodiment of the present application, the directional indication is only configured to explain the relationship between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly.

[0042]In the present application, unless otherwise clearly stated and limited, the terms “c...

[0001] The present application claims priority to Chinese Patent Applications Nos. 202211061109.7 and 202222313087.0, both filed on Aug. 31, 2022, the entire contents of which are incorporated herein by reference.TECHNICAL FIELD

[0002] The present application relates to the technical field of air conditioners, in particular to a unitary air conditioner.BACKGROUND

[0003] A unitary air conditioner usually includes an electronic control device. The main control board in the electronic control device will generate a large amount of heat when working. If the heat cannot be discharged in time, the operating performance and service life of the main control board will be affected. Existing unitary air conditioners usually choose to configure a cooling fan in an embodiment for the electronic control device to assist the electronic control device in dissipating heat to ensure stable operation and avoid the problem of high temperature burning of electronic control components. However, with the trend of miniaturization design of unitary air conditioners, the internal space of the unitary air conditioner is very limited, and the specially configured cooling fan obviously takes up a lot of layout space, making the internal structure of the unitary air conditioner more complex.TECHNICAL PROBLEM

[0004] The main purpose of the present application is to provide a unitary air conditioner, aiming to simplify the structure of the unitary air conditioner.TECHNICAL SOLUTION

[0005] In order to achieve the above purpose, the unitary air conditioner proposed in the present application includes:

[0006] a housing provided with an outdoor air outlet and an outdoor air inlet; an outdoor airflow channel is formed between the outdoor air inlet and the outdoor air outlet;

[0007] a first heat exchanger provided at the outdoor airflow channel;

[0008] a first fan provided at the outdoor airflow channel and configured to drive air to flow from the outdoor air inlet to the outdoor air outlet; and

[0009] an electronic control device at least partially located in the outdoor airflow channel.

[0010] In an embodiment, the first heat exchanger is provided adjacent to the outdoor air outlet; the first heat exchanger is located on an air outlet side of the first fan; the electronic control device is located on an air inlet side of the first fan.

[0011] In an embodiment, the outdoor air inlets are provided with at least two groups, and the at least two groups of outdoor air inlets are respectively provided at left and right sides of the housing; the outdoor air outlets are provided at a back side of the housing, and the electronic control device is provided between the outdoor air inlet on the left side and the outdoor air inlet on the right side.

[0012] In an embodiment, at least one group of outdoor air inlets is provided at a bottom of the housing.

[0013] In an embodiment, the electronic control device is provided adjacent to a top of the housing.

[0014] In an embodiment, the electronic control device includes a main control board, a heat dissipation structure connected to the main control board, and an electronic control box; the main control board is located in the electronic control box, and the heat dissipation structure is exposed on the electronic control box.

[0015] In an embodiment, the unitary air conditioner further includes a water-slinging structure provided at the outdoor airflow channel, and a water collection receptacle is provided at a bottom of the housing; the water-slinging structure is at least partially located in the water collection receptacle, and configured to strike and sling water in the water collection receptacle to assist the heat dissipation structure in dissipating heat.

[0016] In an embodiment, the first fan includes a first drive member and an axial flow impeller drivingly connected to the first drive member, and the water-slinging structure is configured as the axial flow impeller.

[0017] In an embodiment, the unitary air conditioner further includes an outdoor air duct provided at the housing; the air outlet end of the outdoor air duct is provided toward the outdoor air outlet, and the first fan is provided at the air inlet end of the outdoor air duct.

[0018] In an embodiment, the air outlet end of the outdoor air duct is provided at intervals from the outdoor air outlet, and the first heat exchanger is located between the air outlet end of the outdoor air duct and the outdoor air outlet.

[0019] In an embodiment, the heat dissipation structure is adjacent to the air inlet end of the outdoor air duct, and a blade of the axial flow impeller is provided to partially extend out of the air inlet end of the outdoor air duct.

[0020] In an embodiment, the electronic control device is provided at the bottom of the housing and between the first fan and the first heat exchanger.

[0021] In an embodiment, an installation cavity is provided at the electronic control box, and the main control board is located in the installation cavity; a box air inlet hole is provided at one side of the electronic control box facing the outdoor air inlet, and a box air outlet hole is provided at one side of the electronic control box facing the first fan; the box air inlet hole is in communication with the installation cavity, and the box air outlet hole is in communication with the installation cavity.

[0022] In an embodiment, the heat dissipation structure is located outside the box air outlet hole.

[0023] In an embodiment, the heat dissipation structure includes a plurality of heat dissipation fins; the plurality of heat dissipation fins are spaced apart along a direction perpendicular to an axis of the first fan, and the heat dissipation fins extend along the axis of the first fan.

[0024] In an embodiment, the electronic control device is provided adjacent to a top of the housing, and an opening direction of the box air outlet hole is provided obliquely downward toward a direction close to the first fan.BENEFICIAL EFFECT

[0025] In the technical solution of the present application, by locating the electronic control device in the outdoor airflow channel, the airflow generated when the first fan is working can be directly used to take away the heat generated by the main control board in time, thereby improving the heat dissipation efficiency of the main control board, and guaranteeing its operating performance and service life. Compared with the existing technology, the unitary air conditioner of the present application does not need to be equipped with parts dedicated to assisting the heat dissipation of the electronic control device. It can not only simplify the structure of the unitary air conditioner, but also facilitate the miniaturization design of the unitary air conditioner. It saves the warehousing and logistics costs of special auxiliary parts (such as the cooling fan installed on the electronic control device). It can also reduce the production and assembly process of the unitary air conditioner, which improves the production efficiency of the whole machine, and thereby reducing the manufacturing cost of the whole machine. Secondly, since no special auxiliary parts are configured, the control logic of the unitary air conditioner can be simplified, and the operational reliability of the unitary air conditioner can be improved, thereby reducing the failure rate and after-sales maintenance costs.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the related art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort.

[0027] FIG. 1 is a schematic structural view of a unitary air conditioner according to an embodiment of the present application.

[0028] FIG. 2 is a schematic exploded view of some parts of the unitary air conditioner in FIG. 1.

[0029] FIG. 3 is a schematic partial cross-sectional view of the unitary air conditioner in FIG. 1.

[0030] FIG. 4 is a front view of the unitary air conditioner in FIG. 3.

[0031] FIG. 5 is a top view of the unitary air conditioner in FIG. 1 with a top cover removed.

[0032] FIG. 6 is a cross-sectional view of the unitary air conditioner at A-A in FIG. 5.

[0033] FIG. 7 is a top view of the unitary air conditioner in FIG. 5 with the electronic control device and an internal air duct cover removed.

[0034] FIG. 8 is a cross-sectional view of the unitary air conditioner at B-B in FIG. 7.

[0035] FIG. 9 is a schematic structural view of a water collection tray in FIG. 1.

[0036] FIG. 10 is a schematic structural view of the unitary air conditioner in FIG. 2 after a top cover, a main control board and a part of an electronic control box are removed.

[0037] FIG. 11 is a front view of the unitary air conditioner in FIG. 10.

[0038] Explanation of reference signs:referencereferencesignnamesignname10housing22second heat exchanger 10aindoor air inlet23first fan 10bindoor air outlet231 first drive member 10coutdoor air inlet232 axial flow impeller 10doutdoor air outlet24water-slinging ring 10eoutdoor airflow25second fanchannel11top cover30indoor air duct12water collection tray31inner air duct holder121 water guide receptacle 31adrain outlet121athird wall section311 water reception tray121bfourth wall section312 water block rib121cwater guide slope32inner air duct cover122 water collection40outdoor air ductreceptacle122afirst wall section50electronic control device122bsecond wall section51main control board1221  first receptacle52heat dissipation structuresection1222  second receptacle53electronic control boxsection123 water block flange531 box air inlet hole124 drain through hole532 box air outlet hole125 squeeze structure60compressor21first heat exchanger

[0039] The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the 10 embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0041] It should be noted that if there is a directional indication (such as up, down, left, right, front, back . . . ) in the embodiment of the present application, the directional indication is only configured to explain the relationship between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly.

[0042] In the present application, unless otherwise clearly stated and limited, the terms “connection,”“fixing,” etc. should be understood in a broad sense. For example, “fixing” can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electronical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] In addition, if there are descriptions involving “first,”“second,” etc. in the embodiments of the present application, the descriptions of “first,”“second,” etc. are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as “first” and “second” may explicitly or implicitly include at least one of these features. In addition, if “and / or” appears throughout the text, its meaning includes three parallel plans, taking “A and / or B” as an example, including plan A, or plan B, or A and B is a solution that is satisfied at the same time. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0044] The present application proposes a water collection structure for a unitary air conditioner. Please referring to FIGS. 1 to 3, 5 and 6, the unitary air conditioner includes a water-slinging structure (please referring to the axial flow impeller 232 and / or water-slinging ring 24 in FIG. 3), and the interconnected first heat exchanger 21 and the second heat exchanger 22; the fine dotted lines in FIG. 1 represent the flow direction of part of the air flow in the unitary air conditioner. Please referring to FIGS. 4, 7 to 9, in an embodiment of the present application, the water collection structure includes:

[0045] The water reception tray 311 used to receive the condensed water of the second heat exchanger 22; the water reception tray 311 is provided with a drain outlet 31a; and

[0046] The water collection tray 12 provided with a water guide receptacle 121 and a water collection receptacle 122. One end of the water guide receptacle 121 is connected to the drain outlet 31a, and the other end is connected to the water collection receptacle 122; the water collection receptacle 122 is configured to allow at least part of the water-slinging structure to extend into so that the water in the water collection receptacle 122 is pumped up to the first heat exchanger 21.

[0047] It should be noted that the unitary air conditioner in the embodiment of the present application refers to a movable unitary air conditioner suitable for use at home and in the office, or a unitary air conditioner installed in prefabricated houses and container houses, or a unitary air conditioner installed in a recreational vehicle (RV). It can be understood that the present application does not limit the specific use of the unitary air conditioner. To facilitate understanding, the following description will take a unitary air conditioner installed on an RV as an example.

[0048] In an embodiment, the unitary air conditioner of the RV is usually installed on the upper side of the roof cover of the RV, and the roof cover is provided with a ventilation inlet hole and a ventilation outlet hole. Please referring to FIGS. 1, 2, 6 and 9, in the embodiment of the present application, the unitary air conditioner includes a housing 10, an indoor air duct 30 and a second fan 25. The housing 10 includes a water collection tray 12 and a top cover 11 covering on the water collection tray 12; the housing 10 are provided with an indoor air inlet 10a and an indoor air outlet 10b. One end of the indoor air duct 30 is connected to the indoor air inlet 10a, and the other end is connected to the indoor air outlet 10b; the second fan 25 and the second heat exchanger 22 are provided at the indoor air duct 30. The second fan 25 is used to drive the air to flow from the indoor air inlet 10a to the indoor air outlet 10b. The indoor air inlet 10a is communicated with the ventilation outlet hole, and the indoor air outlet 10b is in communication with the ventilation inlet hole. In this way, the air inside the RV enters the indoor air duct 30 of the unitary air conditioner through the ventilation outlet hole and the indoor air inlet 10a, performs heat exchange with the second heat exchanger 22 in the indoor air duct 30, and then returns to the inside of the RV through the indoor air outlet 10b and the ventilation inlet hole, thereby realizing the function of regulating the internal temperature of the RV.

[0049] Please referring to FIGS. 1 to 3, in the embodiment of the present application, the housing 10 is also provided with an outdoor air outlet 10d and an outdoor air inlet 10c. An outdoor airflow channel 10e is formed between the outdoor air inlet 10c and the outdoor air outlet 10d. The unitary air conditioner also includes a first fan 23 located in the outdoor airflow channel 10e. The first fan 23 is used to drive air to flow from the outdoor air inlet 10c to the outdoor air outlet 10d. The first heat exchanger 21 is located in the outdoor airflow channel 10e. In an embodiment, the RV air conditioner is mainly used to cool down and regulate the temperature inside the vehicle, that is, the unitary air conditioner is in cooling mode. When the unitary air conditioner is in the cooling mode, the first fan 23 continues to work to ensure that the air source outside the unitary air conditioner continuously flows through the outdoor airflow channel 10e and performs efficient heat exchange with the first heat exchanger 21, so that the heat of the first heat exchanger 21 can be taken away in time. When the air in the vehicle flows into the indoor air duct 30 and performs heat exchange with the second heat exchanger 22, part of the air will condense to form water droplets, and then drip or flow into the water reception tray 311 under the action of gravity. When the condensed water in the water reception tray 311 reaches a certain scale, it will naturally flow to the drain outlet 31a, flow into the water guide receptacle 121 of the water collection tray 12 through the drain outlet 31a, and then flow into the water collection receptacle 122. That is, after the unitary air conditioner is installed on the top of the RV, the bottom of the water collection receptacle 122 is at the lowest or close to the lowest position, so that gravity can be used to allow the condensed water to flow and be concentrated in the water collection receptacle 122, thereby ensuring the water level in the water collection receptacle 122. On this basis, the water-slinging structure of the unitary air conditioner can throw the condensed water accumulated in the water collection receptacle 122 to the surroundings, and cause part of the condensed water to splash on the first heat exchanger 21, so as to utilize the condensed water to take away the heat on the first heat exchanger 21, thereby improving the heat dissipation efficiency of the first heat exchanger 21.

[0050] In an embodiment, the second fan 25 includes a second drive member and a cross-flow impeller drivingly connected to the second drive member. The axis of the cross-flow impeller intersects with the distribution direction of the indoor air inlet 10a and the indoor air outlet 10b. In an embodiment, the second drive member may be one of a driving motor, a hydraulic motor or a pneumatic motor. In this way, the size of the second fan 25 is smaller, which is conducive to the miniaturization design of the unitary air conditioner. Moreover, the cross-flow impeller can blow the air to a farther indoor area, and the air output is softer, thereby improving the user experience.

[0051] It is easy to understand that if the unitary air conditioner is in the heating mode, that is, the second heat exchanger 22 heats the air in the RV, at this time, the first heat exchanger 21 has no heat dissipation demand, so even if no condensed water is generated on the second heat exchanger 22, nor does it affect the overall heat exchange efficiency of the unitary air conditioner. To facilitate understanding, the following description will take the unitary air conditioner in cooling mode as an example.

[0052] In the technical solution of the present application, the condensed water generated on the second heat exchanger 22 is collected through the water collection receptacle 122 on the water collection tray 12, and the water-slinging structure is used to throw the condensed water accumulated in the water collection receptacle 122 toward the first heat exchanger 22. The heat exchanger 21 can make full use of the condensed water to assist the first heat exchanger 21 in dissipating heat, thereby improving the heat dissipation efficiency of the first heat exchanger 21 and thereby improving the overall heat exchange efficiency of the unitary air conditioner.

[0053] It should be noted that the water reception tray 311 and the water collection tray 12 may be provided separately. For example, please referring to FIGS. 6 and 8, in an embodiment, the water reception tray 311 is integrally formed with the indoor air duct 30, and the indoor air duct 30 is installed on the water collection tray 12. The drain outlet 31a is located on the bottom wall of the water reception tray 311, and the water guide receptacle 121 is located on the lower side of the drain outlet 31a. In an embodiment, the indoor air duct 30 includes an inner air duct holder 31 and an inner air duct cover 32 covering the inner air duct holder 31. The water reception tray 311 is integrally formed with the inner air duct holder 31 and is located between the indoor air inlet 10a and the outdoor air inlet 10c. The second heat exchanger 22 is provided at the upper side of the water reception tray 311. Of course, in other embodiments, the water reception tray 311 and the water collection tray 12 may also be integrally formed and configured as a chassis of a unitary air conditioner.

[0054] Understandably, on the one hand, in order to reduce the wind resistance of the vehicle and achieve the lightweight of the vehicle, the design trend of RV air conditioners must be towards miniaturization. Therefore, the internal layout space of the unitary air conditioner is very limited, which leads to the obvious limitation of the design parameters of parts of the first fan 23 and the first heat exchanger 21, such as the shape, size and power. On the other hand, the indoor space of the RV is large and the internal structure is complex, so the demand for cooling capacity is relatively large. If only the first fan 23 is relied on to dissipate the heat of the first heat exchanger 21, the overall heat exchange efficiency of the unitary air conditioner will be low, resulting in the overall air conditioner being unable to meet the user's cooling needs. The unitary air conditioner in the embodiment of the present application can make full use of the collected condensed water to assist the first heat exchanger 21 to dissipate heat without significantly increasing the size of the unitary air conditioner, or even increasing the size, and significantly improves the heat exchange efficiency of the whole machine, thereby not only meeting the miniaturization design requirements of the RV air conditioner, but also satisfying the user's cooling needs well.

[0055] In an embodiment, there are various structural forms of the water-slinging structure. For example, please referring to FIGS. 3, 4 and 6, in an embodiment, the first fan 23 includes a first drive member 231 and an impeller drivingly connected to the first drive member 231. The water-slinging structure includes the impeller of the first fan 23. In an embodiment, the first drive member 231 may be one of a driving motor, a hydraulic motor or a pneumatic motor, and the impeller may be one of an axial flow impeller, a cross flow impeller or a centrifugal impeller. In an embodiment, the impeller is configured as an axial flow impeller 232. The free end of the blades on the axial flow impeller 232 (that is, the end away from the axis) can invade the condensed water in the water collection receptacle 122 when rotating to the lowest point, so that some of the thrown-up condensed water directly splashes onto the first condenser, and some is blown towards the first condenser by the air flow, thus it serves the purpose of assisting the first condenser in dissipating heat. Of course, in other embodiments, the impeller can also be configured as a centrifugal impeller or a cross-flow impeller, as long as the blades of the impeller can splash the condensed water in the water collection receptacle 122 toward the first condenser.

[0056] Please referring to FIGS. 3, 4 and 6, further, the water-slinging structure further includes a water-slinging ring 24. The water-slinging ring 24 is connected to the free end of the blade of the axial flow impeller 232 and is located close to the first heat exchanger 21. In this way, the water-slinging ring 24 rotates following the rotation of the impeller, thereby knocking the condensed water in the water collection receptacle 122 into the air, and makes full use of the air kinetic energy in the outdoor airflow channel 10e to allow more condensed water to fly to the first heat exchanger 21, thereby further improving the heat dissipation efficiency of the first heat exchanger 21. It should be noted that the water-slinging ring 24 refers to a structure in which the water-slinging structure is a closed ring or a substantially ring-shaped structure. That is, the water-slinging structure does not necessarily have to be a closed ring structure, and can be multiple sections of arc-shaped brackets connected to the free end of the blade. Multiple sections of arc-shaped brackets are spaced apart along the axial direction of the impeller and form a roughly annular structure. It should be noted that the water-slinging structure is at least partially located within the water collection receptacle 122, which means that during the rotation of the water-slinging structure, the point on its outer edge farthest from the axis will invade the water collection receptacle 122, thereby lifting the condensed water inside the water collection receptacle 122. In this way, the blades on the first fan 23 and the water-slinging ring 24 will bring up the condensed water in the water collection receptacle 122 during the rotation process, thereby further improving the auxiliary heat exchange effect of the condensed water on the first heat exchanger 21. Of course, in other embodiments, the water-slinging structure may also include only the water-slinging ring 24 or only the impeller.

[0057] Please referring to FIGS. 3 and 4, in order to ensure that the water-slinging ring 24 can maintain smooth operation and reliability for a long time, in an embodiment, the distance between the outer edge of the water-slinging ring 24 and the bottom surface of the water collection receptacle 122 is set as e, and 7 mm≤e≤10 mm. For example, e can take the value 7.5 mm, 8 mm or 9 mm, etc. It should be noted that the bottom surface of the water collection receptacle 122 refers to the bottom surface of the receptacle located directly below the water-slinging structure, and e represents the distance between the lowest point of the part where the water-slinging ring 24 penetrates into the water collection receptacle 122 and the bottom surface of the receptacle. Understandably, if the value of e is too small, it may cause motion interference between the water-slinging ring 24 and the bottom wall of the water collection receptacle 122 under the influence of parts manufacturing tolerances and assembly tolerances, thereby affecting the normal operation of the water-slinging ring 24 and the first fan 23. Secondly, considering that after long-term use of the unitary air conditioner, foreign matter such as sediment may be deposited in the water collection receptacle 122, causing the water pump ring 24 to interfere with the movement of the foreign matter and unable to operate normally, so the value of e cannot be too small. If the value of e is too large, the diameter of the corresponding impeller will be significantly smaller, thereby reducing the heat dissipation effect of the first fan 23 on the first heat exchanger 21.

[0058] Please referring to FIGS. 3 and 4, in an embodiment, the distance between the outer edge of the water-slinging ring 24 and the top surface of the side wall of the water collection receptacle 122 is set to E, and 1.5 e≤E≤3 e. For example, E can take the value of 11 mm, 15 mm, 20 mm or 25 mm, etc. It should be noted that the top surface of the receptacle side wall refers to the top surface closest to the bottom surface of the receptacle, that is, the top surface corresponds to the maximum height of the water collection receptacle 122; E represents the distance between the lowest point that the water-slinging ring 24 penetrates into the water collection receptacle 122 and the top surface of the side wall of the receptacle, that is, E represents the penetration depth of the water-slinging ring 24 in the water collection receptacle 122. It can be understood that if the value of E is too small, the amount of water that the water-slinging ring 24 can pump up is relatively limited, resulting in insufficient water pumping effect; if the value of E is too large, it means that the height of the side wall of the water collection receptacle 122 is relatively high, thereby causing the adverse effect of reducing the cross-sectional area of the outdoor airflow channel 10e, that is, reducing the ventilation air volume in the outdoor airflow channel 10e. In the technical solution of the present application, by setting 7 mm≤e≤10 mm and 1.5 e≤E≤3 e, the whole machine can obtain a large outdoor ventilation air volume and at the same time obtain an excellent water pumping effect to assist the heat dissipation of the first heat exchanger 21, thereby comprehensively improving the heat exchange efficiency of the entire machine.

[0059] Please referring to FIGS. 3, 4 and 9, in order to further improve the auxiliary effect of condensed water on heat dissipation of the first heat exchanger 21, in an embodiment, the water collection receptacle 122 includes a first receptacle section 1221 and a second receptacle section 1222 distributed along the first direction. The first receptacle section 1221 is connected with the water guide receptacle 121, and the receptacle bottom surface of the first receptacle section 1221 is lower than the receptacle bottom surface of the second receptacle section 1222. The water-slinging structure is located in the first receptacle section 1221, and the first heat exchanger 21 is located in the second receptacle section 1222. In this way, on the premise of ensuring that the water-slinging structure can pump a sufficient amount of water, the bottom end of the first heat exchanger 21 is immersed in the condensed water in the second receptacle section 1222 to further improve the auxiliary heat dissipation effect of the condensed water. It should be noted that the distinction between high and low in the technical solution of the present application refers to the height difference of each component on the unitary air conditioner relative to the horizon with the horizon as a reference, when the unitary air conditioner is correctly installed and ready for use, for example, after the RV air conditioner is correctly installed on the top of the RV. It is easy to understand that the distance between the outer edge of the water-slinging ring 24 and the receptacle bottom surface of the first receptacle section 1221 is the distance e between the outer edge of the water-slinging ring 24 and the receptacle bottom surface of the water collection receptacle 122. Of course, in other embodiments, the water collection receptacle 122 can also be provided with only the first receptacle section 1221, and the water-slinging structure and the first heat exchanger 21 are both located in the first receptacle section 1221; or, the water-slinging structure is located in the first receptacle section 1221, and the first heat exchanger 21 is located outside the water collection receptacle 122.

[0060] Please referring to FIGS. 3, 4 and 9, in an embodiment, the outdoor air outlet 10d is located on the side of the housing 10. The side wall of the water collection receptacle 122 includes a connected first wall section 122a and a second wall section 122b. The first wall section 122a is provided close to the outdoor air outlet 10d, and the second wall section 122b is connected to the side wall of the water guide receptacle 121. The first wall section 122a is configured with the same structure as the lower side edge of the outdoor air outlet 10d. In an embodiment, the top cover 11 of the housing 10 is spliced with the first wall section 122a and an outdoor air outlet 10d is formed at the splicing point. In this way, the first wall section 122a is directly used as the lower edge of the outdoor air outlet 10d, so that the structure of the housing 10 is simplified, thereby reducing the manufacturing cost of the unitary air conditioner. Moreover, in the embodiment where the first heat exchanger 21 is located in the second receptacle section 1222, the first heat exchanger 21 can also be provided at an area closer to the outdoor air outlet 10d, which is beneficial to the arrangement of the internal parts of the unitary air conditioner being more compact in the first direction. Of course, in other embodiments, the side edges of the water collection tray 12 can also be folded upward with reinforced flanges. The reinforced flanges are configured with the same structure as the lower side edge of the outdoor air outlet 10d, and the first wall section 122a and the reinforced flanges are provided at intervals along the first direction.

[0061] In an embodiment, the height of the first wall section 122a is less than the height of the second wall section 122b. That is to say, the first wall section 122a is shorter than the second wall section 122b. When the water level in the water collection receptacle 122 is high, the water will preferentially overflow through the first wall section 122a and flow to the outside of the unitary air conditioner, thereby preventing the problem of water accumulation occurring in the area on the water collection tray 12 except the water collection receptacle 122. Of course, in other embodiments, the height of the top surface of the first wall section 122a may be greater than or equal to the height of the top surface of the second wall section 122b.

[0062] Please referring to FIG. 9, in an embodiment, the side wall of the water guide receptacle 121 includes a connected third wall section 121a and a fourth wall section 121b. The third wall section 121a is located close to the indoor air inlet 10a, and the fourth wall section 121b is connected to the second wall section 122b. The height of the third wall section 121a is greater than the height of the fourth wall section 121b. The height of the fourth wall section 121b is greater than or equal to the height of the second wall section 122b. That is, the third wall section 121a is higher than the fourth wall section 121b, the first wall section 122a and the second wall section 122b. In this way, even if the water levels in the water collection receptacle 122 and the water guide receptacle 121 are high, causing the water in them to overflow, it will also preferentially overflow from other positions to the outside of the receptacle, rather than overflowing from the third wall section 121a to the outside of the receptacle, thereby reducing the risk of condensed water flowing into the indoor space of the RV through the indoor air inlet 10a. Of course, in other embodiments, the heights of the third wall section 121a, the fourth wall section 121b, and the second wall section 122b can also be provided to be level.

[0063] Please referring to FIGS. 6 and 8, in an embodiment, the height difference between the bottom surface of the water reception tray 311 and the top surface of the first wall section 122a is set to d, 0<d≤6 mm. For example, d can take a value of 3 mm, 4 mm, or 5 mm, etc. That is, the bottom surface of the water reception tray 311 is higher than the top surface of the first wall section 122a. In this way, the condensed water in the water reception tray 311 can be more smoothly discharged from the drain outlet 31a to the water guide receptacle 121 in time; and then the condensed water can flow into the water collection receptacle 122 backwards in time; and even if the water level in the water collection receptacle 122 is too high and causes the condensed water to overflow, for example, when it overflows from the first wall section 122a to the outside of the housing 10, the water in the water collection receptacle 122 and the water guide receptacle 121 will not flow into the water reception tray 311, thereby avoiding the problem that the water level in the water reception tray 311 is too high and overflows everywhere. It can be understood that under the condition that the internal height dimensions of the housing 10 are the same, if the bottom surface of the water reception tray 311 is set too high, the structure of the water reception tray 311 will occupy the height space, resulting in a reduction in the height size of the second condenser, thereby being not conducive to the heat exchange efficiency of the second condenser.

[0064] Please referring to FIGS. 6 and 7, in an embodiment, the water reception tray 311 has a water block rib 312 close to the indoor air inlet 10a. The height difference between the top surface of the water block rib 312 and the bottom surface of the water reception tray 311 is set as D, 2 d≤D≤6 d. For example, D can take values of 6 mm, 8 mm, 10 mm, 15 mm, 20 mm or 30 mm, etc. In this way, if the water reception tray 311 is not drained smoothly, resulting in too much condensed water stored in the water reception tray 311, even if the unitary air conditioner is driven to shake violently while the RV is driving, the rippling condensed water in the water reception tray 311 will not flow past the water block ribs 312 to the indoor air inlet 10a, and will fall downward into the indoor space of the RV from the indoor air inlet 10a. It is easy to understand that since the water block ribs 312 are located between the indoor air inlet 10a and the second heat exchanger 22, that is, the air flow flowing from the indoor air inlet 10a to the second heat exchanger 22 will be interfered by the water block ribs 312. Therefore, if the height of the water block ribs 312 is set too high, it will significantly block the air inlet from the indoor air inlet 10a, which will be detrimental to the heat exchange effect of the second heat exchanger 22.

[0065] Please referring to FIG. 9, in order to further reduce the risk of condensed water flowing into the indoor air inlet 10a, in an embodiment, a water block flange 123 is protruding from the inner edge of the indoor air inlet 10a. The side of water guide receptacle 121 is provided at the side of the water block flange 123 away from the indoor air inlet 10a, and is spaced apart from the water block flange 123. That is to say, a water block flange 123 is added around the indoor air inlet 10a as a waterproof line. Even if a small amount of condensed water overflows from the third wall section 121a to the outside of the receptacle, it will be intercepted by the water block flange 123, thereby preventing condensed water from entering the indoor air inlet 10a.

[0066] Please referring to FIGS. 7 and 9, in order to solve the problem of condensed water overflowing to the outside of the receptacle and accumulating in the area of the water collection tray 12 located outside the receptacle, in an embodiment, a plurality of drain through holes 124 are spaced at the bottom of the water collection tray 12. At least one drain through hole 124 is provided outside the water collection receptacle 122. In an embodiment, the hole diameter of the drain through hole 124 is greater than or equal to 20 mm. In an embodiment, the unitary air conditioner on the top of the RV usually has a gap with the roof. That is, the bottom of the housing 10 of the unitary air conditioner is only connected and fixed with the edge of the ventilation inlet and ventilation holes on the roof, while other areas at the bottom of the housing 10 have gaps with the vehicle roof. In this way, by directly opening the drain through holes 124 at the bottom of the water collection tray 12, the condensed water that accidentally overflows the water collection receptacle 122 or the water guide receptacle 121 can flow to the outside of the housing 10 through these drain through holes 124, and pass through the gap between the housing 10 and the car roof. It is worth mentioning that if rainwater accidentally enters the housing 10 through the outdoor air inlet 10c and accumulates in the area of the water collection tray 12 outside the receptacle, it can be drained away in time through these drain through holes 124. In an embodiment, at least one drain through hole 124 is located outside the water guide receptacle 121. In this way, drain through holes 124 can be provided at the outsides of the water guide receptacle 121 and the water collection receptacle 122, so that overflowing condensed water or rainwater that accidentally enters the housing 10 can be drained away faster. It is worth mentioning that the drain through hole 124 can also be used as a part of the outdoor air inlet 10c, that is, the air enters the outdoor airflow channel 10e through the drain through hole 124. Of course, in other embodiments, the drain through hole 124 may also be provided only outside the receptacle of the water collection receptacle 122, or the drain through hole 124 may be provided only outside the receptacle of the water guide receptacle 121.

[0067] Please referring to FIGS. 3 and 9, in an embodiment, a squeeze structure 125 is protruding from the bottom surface of the water collection receptacle 122. The squeeze structure 125 is used to reduce the water storage volume of the water collection receptacle 122. In this way, the water storage volume of the water collection receptacle 122 can be reduced by the squeeze structure 125, so that the condensed water can be more concentrated in the water collection receptacle 122, and the height of the water surface can be raised under the condition of the same volume of condensed water, thereby ensuring the water level height required by the water-slinging structure when pumping water. In an embodiment, when the unitary air conditioner cools the indoor space of the RV, since the indoor space is well sealed and the space volume is smaller compared to that of a residence, the dehumidification capacity of the second heat exchanger 22 when running is limited, and the condensed water produced is also limited. By arranging the squeeze structure 125, the water storage level of a small amount of condensed water can be raised, so that the water-slinging structure can pump water and continue to operate, thereby making the unitary air conditioner more suitable for use in RVs. In an embodiment, the squeeze structure 125 may be configured as a boss or an annular rib. It is worth mentioning that when the squeeze structure 125 is configured as a boss, the top surface of the boss can also serve as a supporting surface for other parts. For example, the bottom of the first fan 23 is supported on the boss.

[0068] In an embodiment, there are multiple squeeze structures 125, and the multiple squeeze structures 125 are integrally formed with the water collection tray 12. In this way, the structure of the unitary air conditioner can be simplified and its manufacturing cost can be reduced. Of course, in other embodiments, the squeeze structure 125 can also be assembled separately from the water collection tray 12, that is, the squeeze structure 125 and the water collection tray 12 are two separate parts and then assembled together, such as the squeeze structure 125 is configured as a rubber pad or other parts that are not easy to absorb water, and the rubber pad is bonded to the bottom surface of the water collection tray 12.

[0069] Please referring to FIGS. 4 and 8, in order to improve the collection efficiency of condensed water, in an embodiment, the water guide receptacle 121 extends downward in a direction close to the water collection receptacle 122. In this way, the condensed water flowing into the water guide receptacle 121 from the drain outlet 31a of the water reception tray 311 will naturally flow downward into the water collection receptacle 122 under the action of gravity, thereby improving the collection efficiency and effect of the condensed water by the water collection receptacle 122. In an embodiment, the second heat exchanger 22 and the first heat exchanger 21 are provided at sequence along the first direction, and the front and back of the RV are provided at sequence along the first direction; that is, the first direction refers to the direction extending from front to back, and the water guide receptacle 121 extends downward obliquely along the first direction. In this way, the acceleration during the traveling process of the RV can also allow the condensed water to flow more quickly and be collected in the water collection receptacle 122 for use by the water-slinging structure. Of course, in other embodiments, the first direction may also be provided parallel to the left and right directions of the RV.

[0070] Please referring to FIGS. 4, 8 and 9, in an embodiment, at least two water guide receptacles 121 are provided. At least two water guide receptacles 121 are provided at opposite sides of the indoor air outlet 10b in the second direction. The second direction is intersected with the first direction. In an embodiment, the first direction and the second direction are provided perpendicularly or nearly perpendicularly, that is, the first direction extends along the front and back directions of the RV, and the second direction extends along the left and right directions of the RV. In this way, the collection speed of condensed water can be increased through the plurality of water guide receptacles 121, thereby ensuring that the water level in the water collection receptacle 122 is continuously maintained at a suitable height. It should be noted that, in the embodiments of the present application, multiple refers to two or more. Of course, in other embodiments, only one water guide receptacle 121 may be provided.

[0071] Please referring to FIGS. 4, 8 and 9, in an embodiment, at least two ends of the water guide receptacles 121 close to the water collection receptacle 122 are in communication with form a water guide slope 121c. The water guide slope 121c is communicated with the water collection receptacle 122. That is, the ends of the plurality of water guide receptacles 121 are in communication with form a water guide slope 121c with a large bottom area, and then the ends of the water guide slope 121c are communicated with the water collection receptacle 122. It is easy to understand that if the condensed water flowing in each water guide receptacle 121 is sparse, the flow speed of the small water flow will be relatively slow. When the water in multiple water guide receptacles 121 converges into a larger water flow, the flow speed of the large water flow will be significantly improved, which is beneficial to allowing the condensed water generated on the second heat exchanger 22 to flow and be collected into the water collection receptacle 122 in a timely manner. In an embodiment, a squeeze structure 125 is also provided at the water guide slope 121c. Of course, in other embodiments, each water guide receptacle 121 can be communicated with the water collection receptacle 122 respectively, that is, the water in each water guide receptacle 121 flows to the water collection receptacle 122 separately, and then is collected together in the water collection receptacle 122.

[0072] The present application also proposes a unitary air conditioner, including the aforementioned water collection structure. The specific structure of the water collection structure refers to the above embodiments. Since this unitary air conditioner adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0073] In an embodiment, the unitary air conditioner also includes an electronic control device 50. The electronic control device 50 includes a main control board 51. The main control board 51 will generate a large amount of heat when working. If the heat cannot be discharged in time, it will significantly affect the operating performance and service life of the main control board 51. Therefore, the existing unitary air conditioner will choose to configure a cooling fan in an embodiment for the electronic control device 50 to assist in its heat dissipation. Please referring to FIGS. 1 to 4, in the embodiment of the present application, the electronic control device 50 is at least partially located in the outdoor airflow channel 10e. In this way, the airflow generated when the first fan 23 is working can be directly used to take away the heat generated by the main control board 51 in time, thereby improving the heat dissipation efficiency of the main control board 51 and ensuring its operating performance and service life. Compared with the related art, the unitary air conditioner of the present application does not need to be equipped with parts dedicated to auxiliary heat dissipation of the electronic control device 50, which can simplify the structure of the unitary air conditioner, thereby facilitating the miniaturization design of the unitary air conditioner, saving the warehousing and logistics costs of special auxiliary parts (such as the cooling fan provided at the electronic control device 50), reducing the production and assembly process of the unitary air conditioner, and improving the production efficiency of the whole machine, and thereby reducing the manufacturing cost of the whole machine. Secondly, since no special auxiliary parts are configured, the control logic of the unitary air conditioner can be simplified, the operational reliability of the unitary air conditioner can be improved, and the failure rate and after-sales maintenance costs can be reduced.

[0074] Please referring to FIGS. 3, 4 and 6, in an embodiment, the first heat exchanger 21 is provided adjacent to the outdoor air outlet 10d. The first heat exchanger 21 is located on the air outlet side of the first fan 23, and the electronic control device 50 is located on the air inlet side of the first fan 23. In this way, the electronic control device 50 can be prevented from blocking the air flow to the first heat exchanger 21, thereby ensuring good heat exchange efficiency of the first heat exchanger 21. Moreover, the arrangement of the internal parts of the air conditioner in the first direction can also be made more compact. Of course, in other embodiments, the electronic control device 50 may also be provided between the first fan 23 and the first heat exchanger 21.

[0075] Please referring to FIGS. 3, 5, 6 and 9, in an embodiment, at least two groups of outdoor air inlets 10c are provided. At least two groups of outdoor air inlets 10c are respectively provided at the left and right sides of the housing 10. The outdoor air outlet 10d is provided at the back side of the housing 10, and the electronic control device 50 is provided between the outdoor air inlet 10c on the left and the outdoor air inlet 10c on the right. It should be noted that for the RV air conditioner, the left and right sides of the housing 10 refer to, after the unitary air conditioner is installed on the top of the RV, the left side of the housing 10 corresponding to the left side of the vehicle, the right side of the housing 10 corresponding to the right side of the vehicle, and the back side of the housing 10 corresponding to one back side of the vehicle. In this way, by simultaneously injecting air into multiple sets of outdoor air inlets 10c, the air inlet volume in the outdoor airflow channel 10e can be increased, thereby improving the heat exchange efficiency of the first heat exchanger 21. Secondly, the outdoor air outlet 10d is provided at the back side of the housing 10. Regardless of whether the vehicle is driving or not, the airflow in the outdoor airflow channel 10e can flow out of the outdoor air outlet 10d smoothly. Furthermore, the airflow flowing in from the outdoor air inlets 10c on the left and right sides will flow through the electronic control device 50 located in the middle, thereby enhancing the effect of the airflow in taking away heat from the electronic control device 50, and thereby improving the heat dissipation efficiency of the electronic control device 50. Of course, in other embodiments, only one group of outdoor air inlets 10c may be provided; the outdoor air outlets 10d may be provided at the left, right or lower side of the housing 10; and the electronic control device 50 may be provided close to the outdoor air inlets 10c.

[0076] Please referring to FIGS. 3, 4, 6, 10 and 11, the fine dotted lines in FIGS. 10 and 11 represent the flow direction of part of the airflow in the unitary air conditioner; in an embodiment, the electronic control device 50 is provided adjacent to the top of the top cover 11 of the housing 10. That is, the electronic control device 50 is provided at a higher position. In this way, it can avoid the problem that rainwater entering the housing 10 through the outdoor air inlet 10c flies into the electronic control box 53 and causes the main control board 51 to be damaged by water droplets. It is worth mentioning that the unitary air conditioner also includes a compressor 60 connected between the first heat exchanger 21 and the second heat exchanger 22. The compressor 60 and the electronic control device 50 are respectively located on the left and right sides of the first fan 23. In this way, the limited layout space in the housing 10 can be rationally utilized, thereby making the internal parts of the unitary air conditioner more compact, which is beneficial to the miniaturization design of the unitary air conditioner. Of course, in other embodiments, the electronic control device 50 can also be provided at the water collection tray 12; or the electronic control device 50 can be located inside the outdoor air inlet 10c, that is, the electronic control device 50 can be provided adjacent to the outdoor air inlet 10c. The airflow reaches the electronic control device 50 immediately after entering the outdoor air inlet 10c.

[0077] Please referring to FIGS. 2 to 4 and 6, in order to further improve the heat dissipation efficiency of the electronic control device 50, in the embodiment where the unitary air conditioner is provided with a water collection receptacle 122 and a water-slinging structure, the electronic control device 50 also includes the heat dissipation structure 52 connected with the main control board 51, and the electronic control box 53. The main control board 51 is located in the electronic control box 53. The heat dissipation structure 52 is exposed on the electronic control box 53 and is located close to the water-slinging structure. In this way, when the water-slinging structure hits the condensed water in the water collection receptacle 122 and causes it to splash around, part of the condensed water will be directly thrown toward the heat dissipation structure 52 and drip to the bottom of the housing 10 under the action of gravity. In this process, the condensed water can take away the heat of the heat dissipation structure 52, thereby improving the heat dissipation efficiency of the heat dissipation structure 52. The airflow generated by the first fan 23 and the splashing condensed water generated by the water-slinging structure jointly promote the heat dissipation of the electronic control device 50, thereby improving the overall heat dissipation efficiency of the electronic control device 50. Of course, in other embodiments, the unitary air conditioner may not be provided with a water-slinging structure or a water collection structure, but only utilizes the airflow of the outdoor airflow channel 10e to quickly take away the heat of the electronic control device 50, thereby improving the heat dissipation efficiency of the electronic control device 50.

[0078] Please referring to FIGS. 2, 6, 10 and 11, in an embodiment, the electronic control box 53 is provided with an installation cavity. The main control board 51 is located in the installation cavity. The side of the electronic control box 53 facing the outdoor air inlet 10c is provided with a box air inlet hole 531, and a box air outlet hole 532 is provided at the side of the electronic control box 53 facing the first fan 23. The box air inlet hole 531 is communicated with the installation cavity, and the box air outlet hole 532 is communicated with the installation cavity. In an embodiment, the left and right sides of the electronic control box 53 respectively correspond to an outdoor air inlet 10c, so box air inlet holes 531 are provided at both left and right sides. In this way, the air flow flowing in from the outdoor air inlets 10c on both sides can also flow into the electronic control box 53 through the box air inlet holes 531 on both sides, then flow through the main control board 51, and then flow out through the box air outlet holes 532, thereby taking away the heat on the main control board 51 quickly in time, and further improving the heat dissipation efficiency of the electronic control device 50. Of course, in some embodiments, the electronic control box 53 may not be provided with the box air inlet hole 531 and the box air outlet hole 532, and only allows the air flow to flow through the exposed heat dissipation structure 52. In other embodiments, the box air inlet hole 531 is only provided at one side of the electronic control box 53, such as the left or right side.

[0079] In the embodiment of the present application, the entire electronic control device 50 can be installed in the outdoor airflow channel 10e, and then the airflow entering the installation cavity is used to take away the heat on the main control board 51 in time. At this time, the heat dissipation structure 52 is optional. Of course, the electronic control device 50 can also expose the heat dissipation structure 52 in the outdoor airflow channel and hide the rest.

[0080] Please referring to FIGS. 6, 10 and 11, in an embodiment, the heat dissipation structure 52 is located outside the box air outlet hole 532. In this way, the heat dissipation structure 52 can block the splashed condensed water from entering the box air outlet hole 532, thereby preventing the condensed water from entering the electronic control box 53 and causing damage to the main control board 51. In addition, the air flowing out from the electronic control box 53 will first pass through the heat dissipation structure 52 and then flow to the first fan 23, thereby further improving the heat dissipation efficiency of the heat dissipation structure 52.

[0081] In an embodiment, the heat dissipation structure 52 has a variety of structural forms. For example, Please referring to FIGS. 2, 6 and 10, in an embodiment, the heat dissipation structure 52 includes a plurality of heat dissipation fins. The plurality of heat dissipation fins are provided and spaced apart in a direction perpendicular to the axis of the first fan 23, and the heat dissipation fins extend along the axis of the first fan 23. In this way, the heat dissipation area can be increased through multiple heat dissipation fins, and the heat can be taken away more quickly. Moreover, the heat dissipation fins extend along the axis direction of the first fan 23, so that the air flow channel between two adjacent heat dissipation fins can be extending toward the first fan 23, and the air flowing out from the electronic control box 53 can flow through the heat dissipation fins and toward the first fan 23 more smoothly. In an embodiment, a plurality of heat dissipation fins are provided at intervals along the left and right directions. Of course, in some embodiments, multiple heat dissipation fins may also be provided at intervals along the up and down direction. In other embodiments, the heat dissipation fins may also be perpendicular to the axis direction of the first fan 23. In some embodiments, the heat dissipation structure 52 may also include a heat dissipation plate extending in the left and right directions, with a plurality of ventilation holes spaced on the heat dissipation plate.

[0082] Referring to FIG. 6, in an embodiment, the electronic control device 50 is provided adjacent to the top of the housing 10, and the opening direction of the box air outlet hole 532 is inclined and extends downward toward the direction close to the first fan 23. In this way, the air flowing out from the box air outlet hole 532 can smoothly flow obliquely downward toward the first fan 23, allowing more air to flow toward the first fan 23 and improving the smoothness and stability of the air flow field in the outdoor airflow channel 10e, thereby ensuring the heat exchange efficiency of the first heat exchanger 21.

[0083] Please referring to FIGS. 2 to 6, in an embodiment, the unitary air conditioner further includes an outdoor air duct 40 located in the housing 10. The outdoor airflow channel 10e is partially formed in the outdoor air duct 40. The outdoor air duct 40 is located at the side of the water collection receptacle away from the outdoor air outlet 10d; the blade portion of the axial flow impeller 232 extends out of the air outlet end of the outdoor air duct 40, and can extend into the water collection receptacle 122 to fetch water. In this way, the stability of the air flow field in the outdoor airflow channel 10e can be improved, and the air flow blown to the first heat exchanger 21 can be more concentrated, thereby preventing changes in the external air flow field from having a significant impact on the internal flow field during vehicle driving, thereby ensuring the heat exchange efficiency of the first heat exchanger 21. It is worth mentioning that a squeeze structure 125 is protruding from the bottom surface of the water collection tray 12, and in an embodiment in which the squeeze structure 125 is configured as a boss, the bottom of the outdoor air duct 40 is at least partially supported on the boss. Of course, in other embodiments, the outdoor air duct 40 may not be provided.

[0084] Please referring to FIGS. 4 and 6, in an embodiment, the air outlet end of the outdoor air duct 40 is spaced apart from the outdoor air outlet 10d, and the first heat exchanger 21 is located between the air outlet end of the outdoor air duct 40 and the outdoor air outlet 10d. In this way, on the premise of ensuring that the air flow can flow to the first heat exchanger 21 more concentratedly, the structure of the outdoor air duct 40 is simplified, thereby reducing the manufacturing cost of the unitary air conditioner. Of course, in other embodiments, the air outlet end of the outdoor air duct 40 can also be abutted against the inner edge of the outdoor air outlet 10d, and the first heat exchanger 21 is located in the outdoor air duct 40.

[0085] Please referring to FIG. 6, in an embodiment, the heat dissipation structure 52 is adjacent to the air inlet end of the outdoor air duct 40. The first fan 23 includes an axial flow impeller 232. The blade portion of the axial flow impeller 232 extends out of the air inlet end, and water can be thrown towards the heat dissipation structure 52. In this way, a part of the blade extending out of the outdoor air duct 40 can throw the condensed water toward the heat dissipation structure 52, thereby ensuring that the condensed water kicked up by the water-slinging structure can still have a cooling effect on the heat dissipation structure 52. Of course, in some embodiments, the heat dissipation structure 52 can also be provided at the air inlet end of the outdoor air duct 40, so that the condensed water thrown up by the water-slinging structure can smoothly splash towards the heat dissipation structure 52 also located in the outdoor air duct 40. In other embodiments, the heat dissipation structure may be located between the first fan and the first heat exchanger. In this case, the condensed water thrown up by the water-slinging structure may not be required to splash directly toward the heat dissipation structure, but the condensed water thrown up may be blown toward the heat dissipation structure through the air flow blown toward the first heat exchanger.

[0086] The above are only some embodiments of the present application, and do not limit the patent scope of the present application. Under the inventive concept of the present application, the equivalent structural transformations made by using the description of the present application and the contents of the accompanying drawings, or directly / indirectly used in other relevant technical fields, are all included in the protection scope of the present application.

Examples

Embodiment Construction

[0040]The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the 10 embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0041]It should be noted that if there is a directional indication (such as up, down, left, right, front, back . . . ) in the embodiment of the present application, the directional indication is only configured to explain the relationship between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly.

[0042]In the present application, unless otherwise clearly stated and limited, the terms “c...

Claims

1-10. (canceled)11. A unitary air conditioner comprising:a housing including an outdoor air outlet and an outdoor air inlet, an outdoor airflow channel being formed between the outdoor air inlet and the outdoor air outlet;a heat exchanger provided at the outdoor airflow channel;a fan provided at the outdoor airflow channel and configured to drive air to flow from the outdoor air inlet to the outdoor air outlet; andan electronic control device at least partially located in the outdoor airflow channel.

12. The unitary air conditioner according to claim 11, wherein:the heat exchanger is provided adjacent to the outdoor air outlet and located on an air outlet side of the fan; andthe electronic control device is located on an air inlet side of the fan.

13. The unitary air conditioner according to claim 11, wherein:the outdoor air inlet is one of two outdoor air inlets provided at left and right sides of the housing, respectively;the outdoor air outlet is provided at a back side of the housing; andthe electronic control device is provided between the two outdoor air inlets.

14. The unitary air conditioner according to claim 11, wherein the electronic control device is provided adjacent to a top of the housing.

15. The unitary air conditioner according to claim 11, wherein the outdoor air inlet is provided at a bottom of the housing.

16. The unitary air conditioner according to claim 11, wherein the outdoor air inlet is one of a plurality of outdoor air inlets, and at least one of the plurality of outdoor air inlets is provided at a bottom of the housing.

17. The unitary air conditioner according to claim 11, wherein the electronic control device includes:an electronic control box;a main control board located in the electronic control box; anda heat dissipation structure connected to the main control board and exposed on the electronic control box.

18. The unitary air conditioner according to claim 17, further comprising:a water collection receptacle provided at a bottom of the housing; anda water-slinging structure provided at the outdoor airflow channel and at least partially located in the water collection receptacle, the water-slinging structure being configured to strike and sling water in the water collection receptacle to assist the heat dissipation structure in dissipating heat.

19. The unitary air conditioner according to claim 18, wherein:the fan includes a drive member and an axial flow impeller drivingly connected to the drive member; andthe water-slinging structure includes the axial flow impeller.

20. The unitary air conditioner according to claim 19, further comprising:an outdoor air duct provided at the housing and located on a side of the water collection receptacle away from the outdoor air outlet;wherein:the outdoor airflow channel is partially formed in the outdoor air duct; anda blade of the axial flow impeller is configured to partially extend out of an air outlet end of the outdoor air duct and extend into the water collection receptacle.

21. The unitary air conditioner according to claim 20, wherein the heat dissipation structure is adjacent to an air inlet end of the outdoor air duct, and the blade of the axial flow impeller is configured to partially extend out of the air inlet end of the outdoor air duct, and throw water towards the heat dissipation structure.

22. The unitary air conditioner according to claim 17, wherein:an installation cavity is provided at the electronic control box, and the main control board is located in the installation cavity;a box air inlet hole is provided at one side of the electronic control box facing the outdoor air inlet, and a box air outlet hole is provided at one side of the electronic control box facing the fan; andthe box air inlet hole and the box air outlet holes are in communication with the installation cavity.

23. The unitary air conditioner according to claim 22, wherein the heat dissipation structure is located outside the box air outlet hole.

24. The unitary air conditioner according to claim 22, wherein the heat dissipation structure includes a plurality of heat dissipation fins spaced apart from each other along a direction perpendicular to an axis of the first fan and extending along the axis of the fan.

25. The unitary air conditioner according to claim 22, wherein the electronic control device is provided adjacent to a top of the housing, and an opening direction of the box air outlet hole is provided obliquely downward toward a direction close to the fan.

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