Air conditioner indoor unit and heating and ventilation equipment

Abstract

The utility model discloses an air conditioner indoor unit and heating and ventilation equipment. The air conditioner indoor unit comprises a volute, a water pan, a heat exchanger and a wind wheel. The water pan is arranged below the volute, a heat exchange air duct is arranged between the water pan and the volute, and the heat exchanger and the wind wheel are arranged in the heat exchange air duct in a spaced mode. The volute comprises an air channel face and a back face which are arranged back to back, the air channel face forms part of a cavity wall of the heat exchange air channel, the volute is further provided with a water tank structure on the back face and provided with a drainage hole communicating with the water tank structure and the water pan, liquid on the back face can be gathered to the water tank structure, and the water tank structure is communicated with the water pan through the drainage hole. And the water flows into the water pan through the drainage hole. According to the air conditioner indoor unit and the heating and ventilation equipment, by optimizing the structural design, the structure of the air conditioner indoor unit is simplified, and the production cost of the air conditioner indoor unit is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and ventilation equipment, in particular to an air-conditioning indoor unit and heating and ventilation equipment using the air-conditioning indoor unit. Background Art

[0002] The HVAC equipment includes the indoor unit of the air conditioner, which includes the volute, impeller, heat exchanger, water tray and other parts. The impeller and heat exchanger are both arranged in the heat exchange air duct, and the volute is an important part of the heat exchange air duct. The impeller rotates under the drive of the motor, driving the external air flow to flow through the heat exchange air duct, and in the process, heat is exchanged with the heat exchanger, thereby achieving temperature and humidity regulation.

[0003] When the air conditioner indoor unit is in cooling mode, the volute is in direct contact with the cooled cold air, so the temperature of the volute itself is relatively low. When the outer surface of the volute facing away from the heat exchange air duct comes into contact with the air with relatively high external temperature, it is easy for the moisture in the air to condense and produce condensed water. If this part of condensed water is not handled properly, when the condensed water drips onto the electronic components in the air conditioner indoor unit, it will cause corrosion to the parts and affect the safe operation.

[0004] In the related designs, there is a layer of thermal insulation material covering the surface of the volute away from the heat dissipation duct, for example, the thermal insulation material layer can be a foam layer with a certain thickness, so that the foam layer can isolate the external air and keep warm, thereby greatly reducing the condensation on the volute. However, such a design will make the stacked structure on the volute more complicated and increase the cost of the entire air conditioner indoor unit. Utility Model Content

[0005] The main purpose of the utility model is to provide an air-conditioning indoor unit, aiming to optimize the structure of the air-conditioning indoor unit so as to simplify the structure of the air-conditioning indoor unit and reduce its cost.

[0006] To achieve the above-mentioned purpose, on the one hand, the utility model provides an air conditioner indoor unit, the air conditioner indoor unit comprises a volute, a water receiving tray, a heat exchanger and a fan wheel;

[0007] The water receiving tray is arranged below the volute, and a heat exchange air duct is arranged between the water receiving tray and the volute, and the heat exchanger and the wind wheel are arranged at intervals in the heat exchange air duct;

[0008] The volute includes a duct surface and a back surface which are arranged back to back with each other, and the duct surface forms part of the cavity wall of the heat exchange duct, wherein the volute is also provided with a trough structure on the back surface, and a drainage hole connecting the trough structure and the water receiving tray is provided, and the liquid on the back surface can gather in the trough structure and flow into the water receiving tray through the drainage hole.

[0009] In one embodiment, the volute comprises a first part and a second part, the impeller is installed in the first part, and the heat exchanger is connected between the second part and the water receiving pan;

[0010] The water tank structure comprises a water tank, the water tank is arranged at the periphery of the back side of the first part, and the drainage hole is arranged on the bottom wall of the water tank.

[0011] In one embodiment, the volute further comprises a volute tongue portion connected between the first portion and the second portion;

[0012] The water tank structure also includes a water collecting tank formed on the back side of the volute tongue portion, and the water collecting tank is connected to the water containing tank.

[0013] In one embodiment, the water collecting tank has drainage openings at both ends of the wind wheel in the axial direction, and both drainage openings are connected to the water containing tank.

[0014] In one embodiment, the drainage hole is also provided on the bottom wall of the water collecting trough.

[0015] In one embodiment, the water trough structure further includes a water inlet trough, which is disposed on at least one side periphery of the second portion along the axial direction of the wind wheel and is connected to the water containing trough.

[0016] In one embodiment, the water tank comprises a first tank body portion, a second tank body portion and a third tank body portion which are connected to each other, wherein the first tank body portion and the second tank body portion are arranged at two opposite side edges of the first portion along the axial direction of the wind wheel, and the third tank body portion is arranged at a peripheral edge of the first portion away from the second portion;

[0017] Wherein, the groove bottom wall of the first groove body part and the groove bottom wall of the second groove body part are both provided with the drainage hole.

[0018] In one embodiment, the downward projections of the drainage holes of the first trough body portion and the drainage holes of the second trough body portion both fall within the area of ​​the water receiving tray.

[0019] In one embodiment, it further includes a driving motor connected to the wind rotor; the first part includes a wind rotor bracket and a motor bracket, and the driving motor is installed on the motor bracket; the motor bracket is connected to one end of the wind rotor bracket in the axial direction of the wind rotor, and the first slot portion is arranged on a side of the wind rotor bracket away from the motor bracket;

[0020] The wind wheel bracket is also connected to a sealing member, which is connected to the periphery of the back side of the wind wheel bracket away from the motor bracket and is located below the rotating shaft of the wind wheel to enclose the wind wheel bracket to form a part of the first slot body.

[0021] In one embodiment, at least two wind wheels are coaxially arranged in the first part;

[0022] The air conditioner indoor unit also includes a support structure connected to the first part, the support structure is arranged between two adjacent wind wheels, the support structure includes a support base and a connecting component, the connecting component is installed on the support base and is used to connect the rotating shafts of two adjacent wind wheels, the support base is connected to the first part and abuts against the heat exchanger.

[0023] In one embodiment, the support structure further includes a buffer member, which is connected to the support seat and abuts against the heat exchanger.

[0024] In one embodiment, the support base comprises:

[0025] a first support member connected to the first portion; and,

[0026] The second support member is detachably connected to the first support member and / or the first part. The second support member cooperates with the first support member to form an installation space for installing the connecting component, and the outer wall surface of the second support member abuts against the heat exchanger.

[0027] In one embodiment, the invention further comprises a housing, wherein the volute and the water receiving tray are arranged in the housing, and the housing, the volute and the water receiving tray cooperate to form a heat dissipation duct;

[0028] The driving motor is installed on the volute and is located in the heat dissipation duct.

[0029] In one embodiment, the heat dissipation air duct is connected to the outside and the heat exchange air duct.

[0030] In a second aspect, the utility model further provides a HVAC device, including the air-conditioning indoor unit as described above.

[0031] The technical solution of the utility model is provided with a water tank structure on the back side of the volute facing away from the air duct surface. The water tank structure can collect the condensed water generated by condensation on the back side of the volute due to the low temperature of the volute itself during the refrigeration process during the operation of the air-conditioning indoor unit, and the condensed water can further flow into the water receiving tray located below the volute through the drainage holes on the volute. Therefore, through the solution of the present application, the volute does not adopt the conventional design idea to cover the back side with a heat-insulating material layer such as a foam material, that is, does not suppress the generation of condensed water on the back side, but reasonably guides the condensed water to the water receiving tray usually provided by the air-conditioning indoor unit, effectively avoiding the threat of this part of condensed water to the safe operation of the air-conditioning indoor unit. In addition, since the volute of the present application does not need to be covered with a heat-insulating material layer, the overall structure of the air-conditioning indoor unit is simplified, and the production cost can be effectively reduced.

[0032] Secondly, because there is no need to set up a thermal insulation material layer, the air-conditioning indoor unit of the present application can reduce the overall thickness accordingly. It can be seen that this can also make the air-conditioning indoor unit of the present application easy to install in an environment with relatively small installation space, which can also expand the application scenarios of the air-conditioning indoor unit of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 This is a three-dimensional structural diagram of an embodiment of an air-conditioning indoor unit of the utility model;

[0035] Figure 2 for Figure 1 The exploded structural diagram of the indoor unit of the air conditioner is shown;

[0036] Figure 3 for Figure 1 A three-dimensional structural schematic diagram of an air-conditioning indoor unit from another perspective is shown;

[0037] Figure 4 for Figure 1 A cross-sectional schematic diagram of an indoor unit of an air conditioner is shown;

[0038] Figure 5 for Figure 1 The schematic diagram of the structure of part of the air conditioner indoor unit after removing the shell is shown;

[0039] Figure 6 for Figure 5A schematic diagram of the exploded structure of the structure shown;

[0040] Figure 7 for Figure 1 A schematic diagram showing a volute in an indoor unit of an air conditioner in a top view;

[0041] Figure 8 for Figure 7 Schematic diagram of the flow of condensed water on the volute;

[0042] Fig. 9 for Figure 1 A schematic diagram showing a volute in an indoor unit of an air conditioner when viewed from above;

[0043] Fig.10 It is a schematic diagram of the assembly of the support base and the volute in the indoor unit of the air conditioner of the utility model;

[0044] Fig.11 for Fig.10 Enlarged view of L in the figure;

[0045] Fig.12 for Fig.11 A schematic structural diagram of the second supporting member in FIG.

[0046] Fig.13 for Figure 1 The exploded structural diagram of the air conditioner indoor unit without the casing is shown;

[0047] Fig.14 for Fig.13 The enlarged view of K in the figure;

[0048] Fig.15 for Figure 1 A schematic diagram of the side structure of an air conditioner indoor unit is shown;

[0049] Fig.16 for Figure 1 Another exploded structural schematic diagram of the air conditioner indoor unit is shown;

[0050] Fig.17 for Fig.15 Section view along NN.

[0051] Description of Figure Numbers:

[0052] 1. Indoor unit of air conditioner; 10. Shell; 11. Casing; 12. Connecting ear; 10a. Air inlet; 20. Volute; 21. Air duct surface; 22. Back surface; 23. Water tank structure; 231. Water tank; 232. First tank body; 233. Second tank body; 234. Third tank body; 235. Water collecting tank; 2351. Drain outlet; 236. Drainage recess; 237. Water guide tank; 238. Drain hole; 24. First part; 241. Wind wheel bracket; 242. Motor bracket ; 243, mounting portion; 244, fixing bracket; 25, second portion; 251, slot; 30, water tray; 31, main body; 32, edge; 33, avoidance port; 40, drive motor; 50, wind wheel; 60, heat exchanger; 70, supporting structure; 71, supporting seat; 711, first supporting member; 712, second supporting member; 713, drainage channel; 72, connecting assembly; 73, buffer member; 80, sealing member; a, heat exchange air duct; b, heat dissipation air duct; Q, heat dissipation flow path.

[0053] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0057] HVAC equipment includes one-to-many central air conditioners, heat pump air conditioners and other equipment. Among them, the central air conditioner includes an outdoor unit and multiple air-conditioning indoor units that form a refrigerant circulation with the outdoor unit, while the heat pump air conditioner usually includes a refrigerant circulation, a cooling water circulation and a chilled water circulation. The chilled water circulation structure of the heat pump air conditioner includes an air-conditioning indoor unit. The above air-conditioning indoor units are installed in the indoor environment and can be used to adjust the temperature and humidity of the indoor environment.

[0058] The basic structure of the indoor unit of the air conditioner includes a volute, a water tray, a heat exchanger, a driving motor, a wind wheel and other parts. A heat exchange duct is provided between the volute and the water tray. The wind wheel and the heat exchanger are both arranged in the heat exchange duct. The volute is an important part of the heat exchange duct. The wind wheel rotates under the drive of the motor, and the external airflow is sucked into the heat exchange duct by forming a negative pressure in the heat exchange duct. In this process, the airflow exchanges heat with the heat exchanger, thereby achieving temperature and humidity regulation. It can be understood that in different forms of HVAC equipment, the heat exchange medium flowing in the heat exchanger in the indoor unit of the air conditioner is different. For example, in the indoor unit of the air conditioner of the central air conditioner, the heat exchange medium flowing in the heat exchanger is refrigerant, while in the air-conditioned room of the heat pump air conditioner, the heat exchange medium flowing in the heat exchanger is chilled water.

[0059] When the air conditioner indoor unit is in cooling mode, the volute is in direct contact with the cooled cold air, so the temperature of the volute itself is relatively low. When the outer surface of the volute facing away from the heat exchange air duct comes into contact with the air with relatively high external temperature, it is easy for the moisture in the air to condense and produce condensed water. If this part of condensed water is not handled properly, when the condensed water drips onto the electronic components in the air conditioner indoor unit, it will cause corrosion to the parts and affect the safe operation.

[0060] In related designs, there is a design in which the surface of the volute away from the heat dissipation duct is covered with a thermal insulation material layer, for example, the thermal insulation material layer can be a foam layer with a certain thickness, so that the foam layer can isolate the external air and keep warm, thereby greatly reducing the condensation on the volute. However, such a design will increase the complexity of the stacked structure on the volute and increase the cost of the entire air conditioner indoor unit.

[0061] Therefore, the present application proposes an air-conditioning indoor unit, which has a more optimized structure than the design of a conventional air-conditioning indoor unit, a simpler overall structure, and a relatively lower production cost.

[0062] Please refer to Figures 1 to 3 , Figure 1 is a schematic diagram of the overall structure of the air-conditioning indoor unit 1, Figure 2 It is a schematic diagram of the exploded structure of the air conditioner indoor unit 1; Figure 3 It is a three-dimensional structural diagram of the air-conditioning indoor unit 1 from another perspective. In this embodiment, the air-conditioning indoor unit 1 includes a housing 10, a volute 20, a water receiving tray 30, a heat exchanger 60, a driving motor 40 and a wind wheel 50.

[0063] Among them, the shell 10 serves as the appearance part of the whole machine, and it is also used to protect and carry the parts such as the volute 20 and the water receiving tray 30 inside it. The shell 10 can be made of metal material, for example, it can be specifically composed of a plate of iron alloy or aluminum alloy. Of course, the shell 10 can also be other materials such as plastic, and this application does not limit this. The air-conditioning indoor unit 1 can be installed on the ceiling in the indoor environment. In order to adapt to its installation environment, the entire air-conditioning indoor unit 1 can be in the form of a relatively flat three-dimensional structure, that is, the shell 10 can constitute a flat cubic shape. Figure 1 The air conditioner indoor unit 1 shown as an example is in the form of a flat rectangular parallelepiped. Figure 1 As shown in the coordinate system in , the XX direction is the front-to-back direction of the air-conditioning indoor unit 1 , the YY direction is the length direction of the air-conditioning indoor unit 1 , and the ZZ direction is the thickness direction of the air-conditioning indoor unit 1 .

[0064] In one structural form, the housing 10 may include a casing 11 and a panel (not shown). The casing 11 may be a cover body with an opening on the lower side formed by splicing a plurality of sheet metals. The panel is connected to the lower part of the casing 11 and covers the lower opening of the casing 11. The water receiving tray 30 and the volute 20 are arranged in the space enclosed by the casing 11 and the panel. In order to realize the installation of the air-conditioning indoor unit 1 in the ceiling environment, a connecting ear 12 may be fixed on the outer side of the casing 11, and the entire air-conditioning indoor unit 1 may be suspended on the ceiling through the cooperation of the connecting ear 12 and the suspension member. After installation, the panel may be arranged almost flush with the ceiling, or the entire air-conditioning indoor unit 1 may be arranged to be sunken relative to the ceiling, so that the casing 11 is also partially exposed from the installation opening position of the ceiling.

[0065] The volute 20 of the present application may be fixedly connected to the housing 11, and the specific fixed connection forms include but are not limited to one of screw connection, welding, bonding, etc. The water tray 30 may be detachably connected to the housing 11, and the detachable connection methods include screw connection, sliding connection, etc.

[0066] Please refer to Figure 4 , after installation, the bottom of the water receiving tray 30 is correspondingly arranged above the panel. The water receiving tray 30 is arranged below the volute 20, and a heat exchange air duct a is arranged between the water receiving tray 30 and the volute 20, and the heat exchanger 60 and the wind wheel 50 are arranged at intervals in the heat exchange air duct a. The panel is provided with a return air port corresponding to the inlet connected to the heat exchange air duct a and an air outlet corresponding to the outlet connected to the heat exchange air duct a. Furthermore, a grille can be provided at the position of the return air port on the panel, and an air guide plate can be provided at the position of the air outlet. Driven by the drive motor 40, the wind wheel 50 rotates to form a negative pressure in the heat exchange air duct a, so that the indoor air can be sucked into the heat exchange air duct a from the return air port and discharged from the air outlet. It can be understood that the present application can be to arrange the wind wheel 50 and the heat exchanger 60 at intervals in the direction from the return air inlet to the air outlet, that is, the wind wheel 50 is located upstream in the air flow direction, or it can be to arrange the wind wheel 50 and the heat exchanger 60 at intervals in the direction from the air outlet to the return air inlet, that is, the wind wheel 50 is located downstream in the air flow direction.

[0067] Further, Figure 2 as well as Figure 4 In the structure exemplarily shown in the figure, the number of the volute 20 and the water receiving tray 30 are both 1, the number of the heat exchange air duct a is also 1, and the heat exchange air duct a extends along the XX direction, the return air port and the air outlet extend in the YY direction and are spaced apart in the XX direction, and the heat exchanger 60 and the wind wheel 50 are spaced apart in the heat exchange air duct a, that is, a gap is formed in the XX direction. It can be understood that the number of heat exchange ducts a in the present application can also be multiple, that is, the number of volutes 20 and water receiving trays 30 can also be different. For example, the volutes 20 and water receiving trays 30 can be arranged in pairs in multiple groups, and a heat exchange duct a is formed between each group of volutes 20 and water receiving trays 30, wherein each heat exchange duct a is provided with a heat exchanger 60 and a wind wheel 50. Of course, multiple volutes 20 can be integrated, or multiple water receiving trays 30 can also be integrated. In the case where multiple heat exchange ducts a are provided, the return air outlets and air outlets on the panel will also be arranged in pairs in multiple groups, and the return air outlets and air outlets of each group are respectively connected to a heat exchange duct a.

[0068] The following content of this application is based on Figure 4 The example in which the heat exchange air duct a is one and the wind wheel 50 is located downstream in the air flow direction is further expanded. Figure 4 As shown, the entrance of the heat exchange duct a and the heat exchange duct a are respectively arranged on opposite sides of the water receiving tray 30 in the XX direction, and the water receiving tray 30 is formed with an escape area (not marked) directly below the wind wheel 50, and part of the structure of the volute 20 is surrounded on the outside of the escape area to cooperate with the water receiving tray 30 to form an outlet connected to the heat exchange duct a and the entrance of the heat exchange duct a.

[0069] Further, please refer to Figures 4 to 6 The volute 20 includes an air duct surface 21 and a back surface 22 which are arranged back to back. Specifically, the air duct surface 21 and the back surface 22 are arranged back to back in the ZZ direction. The air duct surface 21 forms part of the cavity wall of the heat exchange air duct a, wherein the volute 20 is also provided with a water tank structure 23 on the back surface 22, and a drainage hole 238 connecting the water tank structure 23 and the water receiving pan 30 is provided. When the air conditioner indoor unit 1 is operating in the cooling mode, the liquid on the back surface 22 can gather in the water tank structure 23 and flow into the water receiving pan 30 through the drainage hole 238.

[0070] The water tank structure 23 of this embodiment is used to collect the condensed water generated on the back side 22 of the volute 20, so as to prevent the condensed water from directly overflowing the range of the volute 20 and flowing around inside the air conditioner indoor unit 1, thereby threatening the performance of other components in the air conditioner indoor unit 1, or dripping into the installation environment of the air conditioner indoor unit 1, thereby improving the stability and comfort of the air conditioner indoor unit 1 during use. The present application further provides a drain hole 238 on the volute 20, and the drain hole 238 is connected to the water receiving pan 30. Here, since the water receiving pan 30 is located below the volute 20, the drain hole 238 can be projected downward and located in the area of ​​the water receiving pan 30, so that the condensed water flowing out of the drain hole 238 can directly drip into the water receiving pan 30 by gravity. Of course, the downward projection of the drain hole 238 may not be located in the area of ​​the water receiving pan 30, so that a drain pipe connected to the drain hole 238 can be designed, and the drain hole 238 and the water receiving pan 30 are connected through the drain pipe.

[0071] Therefore, the condensed water generated on the back side 22 of the volute 20 of the present application can be directly collected by the water receiving tray 30 of the air conditioner indoor unit 1, and the volute 20 does not adopt the conventional design idea to cover the back side 22 of the volute 20 with a heat-insulating material layer such as a foam material, that is, does not suppress the generation of condensed water on the back side 22, but reasonably guides the condensed water to the water receiving tray 30 usually provided by the air conditioner indoor unit 1, effectively avoiding the threat of this part of condensed water to the safe operation of the air conditioner indoor unit 1. In addition, since the volute 20 of the present application does not need to be covered with a heat-insulating material layer, the overall structure of the air conditioner indoor unit 1 is simplified, and the production cost can be effectively reduced.

[0072] Secondly, because there is no need to set up a thermal insulation material layer, the air-conditioning indoor unit 1 of the present application can reduce the overall thickness accordingly. It can be seen that this can also make it easier to install the air-conditioning indoor unit 1 in an environment with a relatively small installation space, thereby expanding the application scenarios of the air-conditioning indoor unit 1 of the present application.

[0073] The volute 20 of the present application can be made of plastic material, which has the advantages of light weight and easy manufacturing. In addition, the thermal conductivity of plastic material is worse than that of metal, so the thermal insulation performance of the volute 20 is also better. In one embodiment, the volute 20 includes a first part 24 and a second part 25 that are integrally injection molded, the wind wheel 50 is installed in the first part 24, and the heat exchanger 60 is connected between the second part 25 and the water receiving tray 30.

[0074] The water tank structure 23 includes a water tank 231, which is arranged at the periphery of the back side 22 of the first part 24, and the drainage hole 238 is arranged on the bottom wall of the water tank 231. It can be understood that in the cooling mode, most of the condensed water generated on the heat exchanger 60 can flow along its own structure and enter the water receiving tray 30, wherein the heat exchanger 60 structure includes a side plate and a heat exchange tube, and the heat exchange tube is penetrated through the side plate and connected to the refrigerant inlet and outlet pipes. After assembly, the edge of the second part 25 is pressed against the side plate of the heat exchanger 60 to ensure the sealing of the heat exchange duct a, and the refrigerant inlet and outlet pipes connected to the heat exchanger 60 are to extend out of the downward range of the second part 25 along the axial direction of the wind wheel 50. In order to receive the condensed water generated by the refrigerant inlet and outlet pipe parts and the bent pipe parts of the heat exchange pipes extending out of the side plates, the axial size of the water receiving tray 30 of the wind wheel 50 is larger than the axial size of the volute 20. That is, in the present application, when the volute 20 is not provided with the insulation structure of the conventional air-conditioning indoor unit 1, the condensed water generated by the second part 25 on the back side 22 can be received by the water receiving tray 30 located below the heat exchanger 60 even if it overflows to the outside of the volute 20.

[0075] We mentioned above that the water receiving tray 30 is provided with an escape area directly below the wind wheel 50, and the side of the first portion 24 away from the second portion 25 will extend to the outside of the escape area of ​​the water receiving tray 30. If the condensed water generated on the back side 22 of the first portion 24 overflows beyond the range of the volute 20, it will be difficult to be received by the water receiving tray 30 in the case of free fall, and this part of the condensed water will affect the operation of the machine.

[0076] To this end, the water tank structure 23 includes a water tank 231, which is arranged at the periphery of the back side 22 of the first part 24, and the drainage hole 238 is provided on the bottom wall of the water tank 231. As for the formation of the water tank 231, the solution of the present application may be that during the molding process of the volute 20, a blocking edge extending upward is integrally formed at the periphery of the back side 22 of the first part 24, and the blocking edge cooperates with the structure of the first part 24 to enclose the water tank 231. It can be understood that the blocking edge may also be the edge of the back side 22 of the first part 24 fixed to the edge by, for example, welding, bonding, etc. after the volute 20 is manufactured.

[0077] In this way, in the case of condensed water generated on the back side 22 of the first part 24, when the condensed water flows downward due to gravity, it is blocked by the blocking edge when it flows to the edge area of ​​the first part 24, and then flows along the water tank 231, and finally discharged into the water receiving tray 30 through the drainage hole 238, thereby effectively preventing the condensed water from overflowing the volute 20 and affecting the normal operation of the air-conditioning indoor unit 1.

[0078] At the same time, the water storage tank 231 of this embodiment is arranged around the periphery of the back side 22 of the first part 24, so that the condensed water generated on the back side 22 of the first part 24 can be effectively collected by the water storage tank 231 and discharged into the water receiving tank when flowing in multiple directions.

[0079] In one embodiment, the water tank 231 includes a first tank body portion 232, a second tank body portion 233 and a third tank body portion 234 that are connected to each other. The first tank body portion 232 and the second tank body portion 233 are arranged at opposite side edges of the first portion 24 along the axial direction of the wind wheel 50, and the third tank body portion 234 is arranged at the periphery of the first portion 24 away from the second portion 25. The bottom wall of the first tank body portion 232 and the bottom wall of the second tank body portion 233 are both provided with drainage holes 238.

[0080] In this embodiment, drainage holes 238 are provided on the bottom walls of the first groove body portion 232 and the second groove body portion 233, so that the condensed water in the water tank 231 can be discharged quickly, thereby avoiding the overflow of the water tank 231 when a large amount of condensed water is generated, thereby further ensuring the safe operation of the air-conditioning indoor unit 1.

[0081] The present application further provides a partial structure of the water receiving tray 30 directly below the drainage hole 238 of the first trough body 232 and the drainage hole 238 of the second trough body 233. That is, the downward projections of the drainage hole 238 of the first trough body 232 and the drainage hole 238 of the second trough body 233 both fall within the area of ​​the water receiving tray 30. By such an arrangement, the condensed water discharged from the drainage holes 238 at the two positions can fall directly into the water receiving tray 30 by gravity, thus omitting the structures such as the pipe connection, and thus simplifying the structure.

[0082] Please refer to Figures 6 to 8 In order to maximize the energy efficiency of the airflow driven by the wind wheel 50, the volute 20 also includes a volute tongue portion connected between the first portion 24 and the second portion 25. It can be understood that the volute tongue portion makes the flow field in the heat exchange air duct a more in line with the aerodynamic characteristics, thereby reducing the noise generated during the flow of the airflow in the heat exchange air duct a and reducing the airflow backflow phenomenon, thereby improving energy efficiency.

[0083] On this basis, the water tank structure 23 further includes a water collecting tank 235 formed on the back side 22 of the volute tongue portion, and the water collecting tank 235 is connected to the water containing tank 231 . Among them, the volute 20 is a thin-walled structure as a whole, and the volute tongue portion is formed by the thin-walled structure of the volute 20 located between the first part 24 and the second part 25 being recessed toward the water receiving tray 30. Therefore, a water collecting groove 235 is formed on the back side 22 of the volute tongue portion due to the recess. In this application, the water collecting groove 235 is connected to the water containing tank 231. On the one hand, the condensed water in the water collecting groove 235 can be quickly discharged, thereby preventing the condensed water there from being retained for a long time and breeding bacteria, thereby affecting the air quality discharged by the air conditioner indoor unit 1. On the other hand, since the water collecting groove 235 is arranged above the water containing tank 231, in the process of the condensed water flowing toward the water containing tank 231, it can be first intercepted and diverted by the water collecting groove 235, and then flow into the water containing tank 231. In this process, at least the condensed water generated at the highest point of the first part 24 is changed in direction during its downward flow, thereby reducing the energy of the condensed water directly impacting the water containing tank 231 and reducing the risk of the condensed water splashing out of the water containing tank 231.

[0084] In order to speed up the discharge of condensed water in the water collecting tank 235, the water collecting tank 235 has drain ports 2351 at both ends along the YY direction, and both drain ports 2351 are connected to the water containing tank 231, that is, the drain port 2351 on one side is connected to the first tank body 232, and the drain port 2351 on the other side is connected to the second tank body 233. Through such a setting, the condensed water in the water collecting tank 235 can be quickly discharged from two directions without being easily retained. It can be understood that, in the case of meeting the drainage requirements, the present application can also be provided with a drain port 2351 at one end of the water collecting tank 235.

[0085] Since the present application omits the design of providing an insulation layer on the back side 22 of the volute 20 in the conventional design, condensed water will also form on the back side 22 of the second part 25. From the above content, we know that the condensed water on the second part 25 can overflow into the water receiving tray 30 located below it. In the case where the present application forms a water collecting tank 235 on the volute tongue portion, it can also be considered to discharge at least a portion of the condensed water generated on the back side 22 of the second part 25 from the water collecting tank 235 to the water receiving tray 30. This can reduce the risk of condensed water splashing onto the pipes or electronic components located below the two sides of the second part 25 during the direct overflow from the second part 25. For details, please refer to Figure 7 and Figure 8 In the present application, a water diversion groove 237 extending from top to bottom toward the water collection groove 235 may be formed on the back side 22 of the second part 25, and the water diversion groove 237 is arranged on at least one side periphery of the second part 25 along the YY direction, and the lower end of the water diversion groove 237 is connected to the water storage groove 231. That is, as Figure 8As indicated by the flow direction of the middle arrow, the present application can drain the condensed water formed on the back side 22 of the second part 25 through the cooperation of the water diversion groove 237 and the water collecting groove 235, and discharge it to the water containing groove 231 in an orderly manner, thereby improving the stability of the air-conditioning indoor unit 1 during operation.

[0086] It can be understood that the number of water diversion grooves 237 can be 1 or 2. The water diversion grooves 237 can be formed by the depression of the shell wall structure of the second part 25, or can be formed by the partition arranged on the back side 22 of the second part 25. In order to enhance the diversion effect of the condensed water on the second part 25, the present application can be provided with water diversion grooves 237 on both sides of the back side 22 of the second part 25 along the axial direction of the wind wheel 50, wherein one water diversion groove 237 is connected to the first trough body portion 232, and the other water diversion groove 237 is connected to the second trough body portion 233.

[0087] From the above content, we know that the water collecting tank 235 will be able to collect part of the condensed water generated by the back side 22 of the volute 20 and the back side 22 of the second part 25. In order to further improve the discharge efficiency of the condensed water in the water collecting tank 235, please refer to Fig. 9 In some embodiments, a drainage hole 238 may also be provided on the bottom wall of the water collecting trough 235. As mentioned above, the water collecting pan 30 of the present application extends to one side of the air outlet, that is, at least part of it is located directly below the wind wheel 50, so the downward projection of the volute tongue between the first part 24 and the second part 25 also falls within the area of ​​the water collecting pan 30. Therefore, the drainage hole 238 provided on the bottom wall of the water collecting trough 235 can discharge the condensed water directly into the water collecting pan 30 in the form of free fall, which greatly speeds up the discharge efficiency of the condensed water in the water collecting trough 235 and avoids the retention phenomenon.

[0088] In order to make the air conditioner indoor unit 1 have a larger output power, the heat exchange duct a has a larger extension dimension in the YY direction, and the dimension of the wind wheel 50 in the YY direction is adapted to the heat exchange duct a. In the case where there is only one wind wheel 50, due to the excessive size of the wind wheel 50 in the axial direction, it is easy to deform during long-term operation. Therefore, in order to meet the high power output requirements and ensure the stability of the structure, at least two wind wheels 50 are coaxially arranged in the first part 24, please refer to Fig.10 The air conditioner indoor unit 1 also includes a support structure 70 connected to the first part 24, the support structure 70 is arranged between two adjacent wind wheels 50, the support structure 70 includes a support seat 71 and a connecting component 72, the connecting component 72 is installed on the support seat 71 and is used to connect the rotating shafts of the two adjacent wind wheels 50.

[0089] Please refer to Fig.11 and Fig.12, the number of wind wheels 50 shown in the figure is two, and the support seat 71 supports the rotating shafts of the two wind wheels 50. Furthermore, the present application also provides a drainage channel 713 in the support seat that is connected to the drainage hole 238 provided on the bottom wall of the water collecting tank 235 in the above content, and flows to the water receiving pan 30 through the drainage channel 713. Therefore, the drainage channel 713 structure formed in the support seat 71 is conducive to the process of draining the condensed water in the water collecting tank 235 from the drainage channel 713 to the water receiving pan 30, so that as little as possible drips onto the wind wheel 50, causing the condensed water to splash onto the air duct surface 21 during the rotation of the wind wheel 50, so as to reduce the possibility of the condensed water dripping from the return air port or the air outlet along the air duct surface 21 to the internal installation environment of the air conditioner indoor unit 1.

[0090] The connection assembly 72 includes a bearing and a bearing seat, wherein the support seat 71 is provided with an installation space for installing the connection assembly 72, and the bearing seat is fixed in the installation space. The bearing can be a rolling bearing, in which case the outer ring of the bearing is fixed on the bearing seat, and the inner ring is fixed to the rotating shaft of the wind wheel 50. Of course, the bearing can also be a sliding bearing. In the case of a sliding bearing, the bearing is relatively fixed to the bearing seat and slides with the rotating shaft of the wind wheel 50. In the above content, the drainage channel 713 formed in the support seat 71 is relatively isolated from the installation space.

[0091] In order to facilitate the assembly of the connection assembly 72, the support seat 71 of this embodiment includes a first support member 711 and a second support member 712. The first support member 711 is connected to the first part 24, and the second support member 712 is detachably connected to the first support member 711, or the second support member 712 is also detachably connected to the first part 24, or the two sides of the second support member 712 are detachably connected to the first support member and the first part 24, respectively. The specific detachable connection method includes but is not limited to screw connection, clamping, etc. After assembly, the first support member 711 and the second support member 712 cooperate to form the above-mentioned installation space. In this way, the first support member 711 and the second support member 712 are separately set, and the second support member 712 is detachably designed, so that the assembly operation of the connection assembly 72 and the rotating shafts of the two wind wheels 50 is more convenient.

[0092] Please refer to Figures 6 to 9 ,as well as Fig.11 and Fig.12, the first support member 711 of the present application can be integrally formed with the first part 24, so that assembly is easier. And the drainage channel 713 in the support seat 71 can be formed by the first support member 711 alone, or by the second support member 712, or by the first support member 711 and the second support member 712. In one embodiment, a drainage recess 236 formed by a depression from the back side 22 toward the inside of the first support member 711 is formed on the tongue portion, that is, the drainage recess 236 can also be understood as being formed by further depression of the bottom wall of the water collecting trough 235. Among them, the drainage hole 238 provided on the water collecting trough 235 is opened on the bottom wall of the drainage recess 236, that is, the first support member 711 is provided with a drainage hole 238 and a drainage recess 236, and the second support member 712 is formed with the above-mentioned drainage channel 713. Through the above arrangement, the first support member 711 is integrally formed with the volute 20 and forms a drainage recess 236 with less material. In this application, a drainage hole 238 is arranged at the position of the first support member 711 and a drainage channel 713 is formed in the first support member 711, so that the condensed water can be effectively prevented from being retained at the position corresponding to the first support member 711. Of course, the structure of forming the drainage recess 236 at the position of the first support member 711 enables the entire water collection tank 235 to be discharged from the end drainage port 2351 to the water storage tank 231, and a drainage path can be further added in the middle of the water collection tank 235, and it can be directly discharged into the water receiving tray 30. That is, this part of the design has the advantage of less material after the first support member 711 is hollowed out, and can also accelerate the condensed water discharge efficiency in the water collection tank 235, which has multiple advantages.

[0093] The support seat 71 of the present application is further in contact with the heat exchanger 60 on the premise of realizing the installation of the connecting component 72. Specifically, the second support member 712 is in contact with the heat exchanger 60. Through such an arrangement, the heat exchanger 60 matches the size of the heat exchange duct a in the YY direction. In the case of a larger size, the heat exchanger 60 is supported by the support seat 71, thereby preventing the heat exchanger 60 from being deformed due to stress concentration in the middle position due to factors such as vibration due to a large span.

[0094] Please refer to Fig.12In the case where the second support member 712 is supported on the heat exchanger 60, the drainage channel 713 can be formed separately in the second support member 712. Then the condensed water in the water collection tank 235 can be discharged to the heat exchanger 60 through the drainage recess 236, the drainage hole 238 and the drainage channel 713 in sequence, and the condensed water can be further discharged to the water receiving tray 30 through the drainage of the heat exchanger 60, that is, the outlet of the drainage channel 713 of the present application can be set on the surface of the second support member 712 that contacts the heat exchanger 60. It can be understood that in other configurations, the outlet of the drainage channel 713 can also be set on the surface of the second support member 712 that does not contact the heat exchanger 60.

[0095] Furthermore, in order to avoid a strong collision of the second support member 712 in the process of supporting the heat exchanger 60, the present application may further install a buffer member 73 on the surface of the support seat 71 in contact with the heat exchanger 60, that is, when the second support member 712 supports the heat exchanger 60, the buffer member 73 is installed on the second support member 712. Among them, the buffer member 73 can be made of materials such as sponge, silicone, etc. The buffer member 73 can effectively protect the structure of the heat exchanger 60. On this basis, when the outlet of the drainage channel 713 is located on the surface where the second support member 712 contacts the heat exchanger 60, in order to prevent the buffer member 73 from blocking the discharge process of the condensed water, a avoidance hole penetrating through its two surfaces can be further formed on the buffer member 73, and the avoidance hole is connected to the outlet of the drainage channel 713.

[0096] From the above, we can understand that the multiple effects of fixing the heat exchanger 60 and draining and diverting are achieved through the setting of the support structure 70. Here, it should also be emphasized that the heat exchanger 60 is supported by the support structure 70, and the heat exchanger 60 also achieves the supporting effect of the support structure 70 in reverse, so that the heat exchanger 60 bears the weight of the connecting component 72 (bearing), so that the volute 20 can share the load at the corresponding position of the support structure 70 because of the support of the heat exchanger 60, and the volute 20 with a thin-walled structure has the effect of not being easily deformed, that is, the support structure 70 realizes two-way support.

[0097] As mentioned above, the heat exchanger 60 is disposed between the second portion 25 and the water receiving pan 30, and the upper side and the lower side of the heat exchanger 60 are respectively connected to the second portion 25 and the water receiving pan 30. In order to achieve the support effect of the heat exchanger 60 on the volute 20 through the support structure 70, please refer to Figure 2In one implementation form, a slot 251 may be formed on the second part 25, and the notch of the slot 251 is toward the side of the wind wheel 50 and toward the bottom, and the upper side of the heat exchanger 60 is embedded in the slot 251. At the same time, a boss supporting the lower side of the heat exchanger 60 may be provided on the water receiving tray 30, and the boss has an inclined supporting surface, which faces the notch of the slot 251. In this way, the two structures of the water receiving tray 30 and the second part 25 realize the clamping and limiting of the heat exchanger 60, and realize the stopping effect of the heat exchanger 60 in the direction away from the wind wheel 50. In this way, when the solution of the present application abuts against the side of the heat exchanger 60 facing the wind wheel 50 through the support structure 70, the heat exchanger 60 is limited in two directions, namely, the direction facing the wind wheel 50 and the direction away from the wind wheel 50. In this way, the heat exchanger 60 can be stably installed. Of course, the heat exchanger 60 can also support the volute 20 at the connecting shaft position of the two wind wheels 50 through the support structure 70. In this way, the structure of the entire air-conditioning indoor unit 1 is relatively stable, and the heat exchanger 60 can almost eliminate the need for connecting parts during the installation process, thereby greatly improving the assembly efficiency.

[0098] Please refer to Figure 5 and Figure 6 as well as Fig.13 In one embodiment, the first part 24 includes a wind rotor bracket 241 and a motor bracket 242. The motor bracket 242 is connected to one end of the wind rotor bracket 241 in the axial direction of the wind rotor 50 and is used to install the drive motor 40. The first slot portion 232 is arranged on the side of the wind rotor bracket 241 away from the motor bracket 242, and the second slot portion 233 surrounds the periphery of the motor bracket 242. It can be understood that the rotating shaft of the wind rotor 50 is rotatably connected to the wind rotor bracket 241 toward one end of the first slot portion 232. Usually, a bearing is installed between the wind rotor bracket 241 and the rotating shaft. The bearing is used to reduce friction and prevent the rotating shaft from wearing the structure of the wind rotor bracket 241 during the rotation of the wind rotor 50. Then, the wind rotor bracket 241 needs to be provided with a convex mounting portion 243 corresponding to the position of the bearing, and the bearing is fixed in the mounting portion 243, wherein the mounting portion 243 is axially protruding outward and there is a gap with the periphery of the wind rotor bracket 241. The first groove body portion 232 of the present application is formed just below the mounting portion 243. In order to achieve a higher production efficiency of the volute 20, the present application may be a case where the volute 20 is made of plastic material, and the overall structure is formed by an integral injection molding method. On this basis, since the first groove body portion 232 is arranged below the mounting portion 243, if the first groove body portion 232 is formed as a whole during the integral molding process of the volute 20, then because there is a mounting portion 243 above it, it will be relatively difficult to demould during the injection molding production process, or the mold design will be relatively complicated.

[0099] To this end, the present application further connects a seal 80 to the wind rotor bracket 241. The seal 80 is connected to the periphery of the back side 22 of the wind rotor bracket 241 away from the motor bracket 242, and is located below the rotating shaft of the wind rotor 50 and the mounting portion 243, so as to enclose with the wind rotor bracket 241 to form a part of the first slot body 232. Specifically, the seal 80 is in the shape of a long strip as a whole, and it can be made of plastic, rubber and other materials. The seal 80 and the wind rotor bracket 241 can be fixedly connected together by bonding, welding and other methods. In this embodiment, by providing a seal 80, the seal 80 replaces a part of the baffle located below the rotating shaft of the wind rotor 50. In this way, the seal 80 can be installed on the wind rotor bracket 241 after the volute 20 is integrally formed, which is conducive to forming the first slot body 232 in a relatively low cost form.

[0100] In this embodiment, the motor bracket 242 is integrally formed with the wind wheel bracket 241, and the air conditioner indoor unit 1 further includes a fixed bracket 244 detachably connected to the motor bracket 242. The fixed bracket 244 and the motor bracket 242 enclose an installation cavity for installing the drive motor 40, and the drive motor 40 is limited in the installation cavity. Among them, the detachable connection method between the fixed bracket 244 and the motor bracket 242 includes but is not limited to one of the methods such as screw connection and snap connection. By setting the fixed bracket 244 and the motor bracket 242 in a detachable connection, the disassembly and assembly operation of the drive motor 40 is more convenient.

[0101] Further, please refer to Figures 15 to 17 , the present application also forms a heat dissipation duct b in the housing 10, wherein the drive motor 40 is located in the heat dissipation duct b, and the heat dissipation duct b is arranged to connect the outside world and the heat exchange duct a. Therefore, during the operation of the air conditioner indoor unit 1, the air flow in the heat exchange duct a is driven by the wind wheel 50 to flow and generate negative pressure, which can cause the air flow in the heat dissipation duct b, so that the outside air can enter the heat dissipation duct b and quickly take away the heat emitted by the drive motor 40, so that the temperature of the wall drive motor 40 is too high when it runs for a long time, so that the stability of the air conditioner indoor unit 1 during long-term operation can be improved.

[0102] In this embodiment, the housing 10 is provided with an air inlet 10a connected to the outside and the heat dissipation duct b, and the position where the air outlet connected to the heat dissipation duct b is connected to the heat exchange duct a can be relatively flexibly set. For example, the air outlet can be connected to the cavity of the heat exchange duct a between the wind wheel 50 and the heat exchanger 60, or the air outlet can be connected to the cavity of the heat exchange duct a between the heat exchanger 60 and the return air outlet (such as Fig.17 As indicated by the dotted line Q in the figure, the air outlet of the heat dissipation flow path Q is connected to the heat exchange air duct a (a cavity located between the heat exchanger 60 and the return air outlet), and the present application does not impose any limitation on this.

[0103] The heat exchange air duct a and the heat dissipation air duct b both extend along the XX direction and are arranged side by side in the YY direction. This arrangement can make full use of the space in the air conditioner indoor unit 1 without causing an increase in the overall volume. Specifically, since the motor bracket 242 is connected to one end of the wind wheel bracket 241 along the axial direction of the wind wheel 50, and the second part 25, the heat exchanger 60 and the part of the water receiving tray 30 located below the heat exchanger 60 on the side facing the motor bracket 242 and the inner wall of the housing 10 form the heat dissipation air duct b, the above-mentioned air outlet can also be formed by the second part 25, the heat exchanger 60 and the part of the water receiving tray 30 located below the heat exchanger 60 on the side facing the motor bracket 242. In this way, the drive motor 40 can be reasonably placed in the heat dissipation air duct b, and the heat dissipation of the drive motor 40 is also achieved without changing the original layout.

[0104] In order to improve the heat dissipation effect of the drive motor 40, the present application may further provide heat dissipation holes on the motor bracket 242 and / or the fixed bracket 244, the heat dissipation holes are connected to the space formed by the fixed bracket 244 and the motor bracket 242, and a plurality of heat dissipation holes are provided, so that during the flow of air in the heat dissipation duct b, the air can enter through the heat dissipation holes and directly contact the drive motor 40, thereby achieving effective heat dissipation. It can be understood that in order to improve the heat dissipation efficiency, the present application may provide heat dissipation holes on both the fixed bracket 244 and the motor bracket 242, and a water retaining edge needs to be formed around the heat dissipation to prevent condensed water from entering therein.

[0105] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air conditioner indoor unit, characterized in that: It includes a volute, a water tray, a heat exchanger and a wind wheel; The water receiving tray is arranged below the volute, and a heat exchange air duct is arranged between the water receiving tray and the volute, and the heat exchanger and the wind wheel are arranged at intervals in the heat exchange air duct; The volute includes a duct surface and a back surface which are arranged back to back with each other, and the duct surface forms part of the cavity wall of the heat exchange duct, wherein the volute is also provided with a trough structure on the back surface, and a drainage hole connecting the trough structure and the water receiving tray is provided, and the liquid on the back surface can gather in the trough structure and flow into the water receiving tray through the drainage hole.

2. The air conditioner indoor unit according to claim 1, characterized in that: The volute comprises a first part and a second part, the wind wheel is installed in the first part, and the heat exchanger is connected between the second part and the water receiving pan; The water tank structure comprises a water tank, the water tank is arranged at the periphery of the back side of the first part, and the drainage hole is arranged on the bottom wall of the water tank.

3. The air conditioner indoor unit according to claim 2, characterized in that: The volute further includes a volute tongue portion connected between the first portion and the second portion; The water tank structure also includes a water collecting tank formed on the back side of the volute tongue portion, and the water collecting tank is connected to the water containing tank.

4. The air conditioner indoor unit according to claim 3, characterized in that: The water collecting tank has drainage ports at both ends of the wind wheel in the axial direction, and both drainage ports are communicated with the water containing tank.

5. The air conditioner indoor unit according to claim 3, characterized in that: The drainage hole is also arranged on the bottom wall of the water collecting trough.

6. The air conditioner indoor unit according to claim 3, characterized in that: The water tank structure further comprises a water inlet tank, which is arranged on at least one side periphery of the second part along the axial direction of the wind wheel and is communicated with the water containing tank.

7. The air conditioner indoor unit according to any one of claims 2 to 6, characterized in that: The water tank comprises a first tank body portion, a second tank body portion and a third tank body portion which are connected to each other. The first tank body portion and the second tank body portion are arranged at two opposite side edges of the first part along the axial direction of the wind wheel, and the third tank body portion is arranged at a peripheral edge of the first part away from the second part. Wherein, the groove bottom wall of the first groove body part and the groove bottom wall of the second groove body part are both provided with the drainage hole.

8. The air conditioner indoor unit according to claim 7, characterized in that: The downward projections of the drainage holes of the first trough body portion and the drainage holes of the second trough body portion both fall within the area of ​​the water receiving tray.

9. The air conditioner indoor unit according to claim 7, characterized in that: It also includes a driving motor connected to the wind rotor; the first part includes a wind rotor bracket and a motor bracket, and the driving motor is installed on the motor bracket; the motor bracket is connected to one end of the wind rotor bracket in the axial direction of the wind rotor, and the first slot portion is arranged on a side of the wind rotor bracket away from the motor bracket; The wind wheel bracket is also connected to a sealing member, which is connected to the periphery of the back side of the wind wheel bracket away from the motor bracket and is located below the rotating shaft of the wind wheel to enclose the wind wheel bracket to form a part of the first slot body.

10. The air conditioner indoor unit according to any one of claims 2 to 6, characterized in that: At least two wind wheels are coaxially arranged in the first part; The air conditioner indoor unit also includes a support structure connected to the first part, the support structure is arranged between two adjacent wind wheels, the support structure includes a support base and a connecting component, the connecting component is installed on the support base and is used to connect the rotating shafts of two adjacent wind wheels, the support base is connected to the first part and abuts against the heat exchanger.

11. The air conditioner indoor unit according to claim 10, characterized in that: The supporting structure further includes a buffer member connected to the supporting seat and abutting against the heat exchanger.

12. The air conditioner indoor unit according to claim 10, characterized in that: The support base comprises: a first support member connected to the first portion; and, The second support member is detachably connected to the first support member and / or the first part. The second support member cooperates with the first support member to form an installation space for installing the connecting component, and the outer wall surface of the second support member abuts against the heat exchanger.

13. The air conditioner indoor unit according to any one of claims 1 to 6, characterized in that: It also includes a housing and a driving motor connected to the wind wheel, the volute and the water receiving tray are arranged in the housing, and the housing, the volute and the water receiving tray cooperate to form a heat dissipation duct; The driving motor is installed on the volute and is located in the heat dissipation duct.

14. The air conditioner indoor unit according to claim 13, characterized in that: The heat dissipation air duct is in communication with the outside and the heat exchange air duct.

15. A HVAC equipment, characterized in that: It comprises an air-conditioning indoor unit as described in any one of claims 1 to 14.

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