Air conditioner

Abstract

An air conditioner, comprising: a housing (1), wherein an accommodating space (101) is provided in the housing (1); an indoor heat exchanger (23), which is arranged in the accommodating space (101), wherein the indoor heat exchanger (23) is configured to exchange heat with indoor air; and an indoor fan assembly (3), which is arranged in the accommodating space (101) and is arranged opposite the indoor heat exchanger (23). The indoor fan assembly (3) comprises: an air duct housing (31) arranged in the housing (1); an indoor fan wheel (32) rotatably arranged in the air duct housing (31), wherein the indoor fan wheel (32) is arranged in the direction of height of the air conditioner, and a lower end of the indoor fan wheel (32) is provided with a lower-end cover (321); an indoor electric motor (33) which is arranged at the bottom of the air duct housing (31), wherein the top of the indoor electric motor (33) is provided with an output shaft (331) and a shaft hole (332), and the output shaft (331) extends upwards through the shaft hole (332), and extends into the air duct housing (31) and is in transmission connection with the lower-end cover (321); and a covering member (34), which is sleeved on the output shaft (331), wherein the covering member (34) is circumferentially arranged around the periphery of the output shaft (331), and covers above the shaft hole (332), an upward recessed mounting space (3210) is provided on the bottom surface of the lower-end cover (321), and the covering member (34) is arranged in the mounting space (3210).

Description

air conditioner

[0001] This application claims priority to Chinese patent application No. 202410504257.4, filed on April 24, 2024; and priority to Chinese patent application No. 202520583835.8, filed on March 29, 2025; and priority to Chinese patent application No. 202520583457.3, filed on March 29, 2025; and priority to Chinese patent application No. 202520583737.4, filed on March 29, 2025; and priority to Chinese patent application No. 202520583756.7, filed on March 29, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of air conditioning technology, and in particular to an air conditioner. Background Technology

[0003] An air conditioner is a device used to regulate indoor air temperature, humidity, airflow speed, and air cleanliness. It is widely used in homes, offices, commercial spaces, and industrial environments. Its basic principle is to transfer heat through the circulation of refrigerant, utilizing the physical processes of evaporation (absorbing heat) and condensation (releasing heat), thereby achieving a cooling or heating effect. With technological advancements, air conditioners not only possess cooling and heating functions but also integrate dehumidification, air purification, and other functions, becoming an indispensable appliance in modern life.

[0004] An air conditioner typically consists of main components such as a compressor, an outdoor heat exchanger, an indoor heat exchanger, and a fan. The compressor drives the refrigerant circulation, the outdoor and indoor heat exchangers act as condensers and evaporators for heat release and absorption, respectively, and the fan accelerates airflow to enhance heat exchange efficiency. Summary of the Invention

[0005] This invention aims to solve the installation problem of the indoor motor of an air conditioner.

[0006] This disclosure provides an air conditioner with several embodiments, including a housing configured as the outer shell of the air conditioner; a receiving space provided within the housing; an indoor heat exchanger disposed in the receiving space for exchanging heat with indoor air; an indoor fan assembly disposed in the receiving space and arranged opposite to the indoor heat exchanger; the indoor fan assembly including a duct housing disposed within the housing; an indoor impeller rotatably disposed within the duct housing and arranged along the height of the air conditioner; a lower end cover provided at the lower end of the indoor impeller; an indoor motor disposed at the bottom of the duct housing; an output shaft and a shaft hole provided at the top of the indoor motor, the output shaft extending upward through the shaft hole and extending into the duct housing for transmission connection with the lower end cover; and a shielding member sleeved on the output shaft, the shielding member being circumferentially arranged around the outer periphery of the output shaft and shielding the area above the shaft hole; wherein, a recessed mounting space is provided on the bottom surface of the lower end cover, and the shielding member is disposed within the mounting space.

[0007] The aforementioned technical solution utilizes the recessed mounting space at the lower end of the indoor fan impeller to allow the shielding component to be housed within this space. This eliminates the need for additional space on the indoor fan impeller for installing waterproof components. Vertically, the shielding component's installation position overlaps with the lower mounting space of the indoor fan impeller, further reducing its impact on the internal space of the air conditioner and resulting in a more compact installation structure. Furthermore, the shielding component, fitted onto the output shaft and extending circumferentially towards it, forms a physical barrier above the shaft hole, shielding the shaft hole below and preventing condensate from directly entering the drive motor. This avoids the risk of the drive motor becoming damp, rusted, or short-circuited, providing excellent waterproofing. Attached Figure Description

[0008] Figure 1 is a structural diagram of an air conditioner according to some embodiments of this disclosure.

[0009] Figure 2 is a diagram of the internal structure shown in Figure 1.

[0010] Figure 3 is a structural diagram of the indoor fan assembly in Figure 1.

[0011] Figure 4 is an exploded view of Figure 3.

[0012] Figure 5 is a cross-sectional view of Figure 3.

[0013] Figure 6 is a magnified view of part A in Figure 5.

[0014] Figure 7 is a structural diagram of the indoor fan wheel in Figure 4.

[0015] Figure 8 is a structural diagram of the indoor motor in Figure 4.

[0016] Figure 9 is a cross-sectional view of Figure 8.

[0017] Figure 10 is a bottom structural diagram of the air duct shell in Figure 4.

[0018] Figure 11 is a three-dimensional structural diagram of Figure 10.

[0019] Figure 12 is a magnified view of part B in Figure 5.

[0020] Figure 13 is a structural diagram of the water receiving tray in Figure 4.

[0021] Figure 14 is a structural diagram of the indoor fan assembly in Figure 2.

[0022] Figure 15 is a structural diagram of the air duct shell in Figure 14.

[0023] Figure 16 is an exploded view of Figure 15.

[0024] Figure 17 is a diagram of the back structure of Figure 15.

[0025] Figure 18 is a partial cross-sectional view of Figure 17.

[0026] Figure 19 is a magnified view of part C in Figure 18.

[0027] Figure 20 is an exploded view of Figure 17.

[0028] Figure 21 is an exploded view of Figure 20 from another perspective.

[0029] Figure 22 is a partial structural diagram of Figure 14.

[0030] Figure 23 is a magnified view of part D in Figure 22.

[0031] Figure 24 is a structural diagram from another perspective of Figure 22.

[0032] Figure 25 is a magnified view of part E in Figure 24.

[0033] Figure 26 is an exploded view of Figure 24.

[0034] Figure 27 is a magnified view of part F in Figure 22.

[0035] Figure 28 is a structural diagram of the protective net in Figure 22.

[0036] Figure 29 is an exploded view of Figure 14 from another perspective.

[0037] Figure 30 is a structural diagram of the outdoor heat exchanger and the first water receiving tray in Figure 2.

[0038] Figure 31 is a structural diagram of the first end of the outdoor heat exchanger in Figure 30.

[0039] Figure 32 is a structural diagram of the second end of the outdoor heat exchanger in Figure 30.

[0040] Figure 33 is an exploded view of Figure 31.

[0041] Figure 34 is a magnified view of part G in Figure 31.

[0042] Figure 35 is an exploded view of Figure 32.

[0043] Figure 36 is a magnified view of section H in Figure 32.

[0044] Figure 37 is a structural diagram of the first end plate and the second end plate of some embodiments of the present disclosure facing the first end.

[0045] Figure 38 is a structural diagram of the first end plate in Figure 37.

[0046] Figure 39 is a three-dimensional structural diagram of Figure 38.

[0047] Figure 40 is a structural diagram of the second end plate in Figure 37.

[0048] Figure 41 is a three-dimensional structural diagram of Figure 40.

[0049] Figure 42 is an exploded view of Figure 31.

[0050] Figure 43 is a cross-sectional view of Figure 31. Detailed Implementation

[0051] The following description, in conjunction with the accompanying drawings, clearly and completely describes some embodiments of this disclosure. Obviously, the described embodiments are merely some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0052] In most air conditioners, the drive motor is placed above the cross-flow indoor fan impeller. However, this takes up internal space, increasing the unit's size and increasing manufacturing costs while reducing the amount of material that can be packed in a container during transport. Conversely, installing the drive motor at the bottom of the cross-flow duct reduces the space occupied, but it is more susceptible to rust due to condensate corrosion.

[0053] The air conditioner in this embodiment can be a floor-standing air conditioner. The following uses a floor-standing air conditioner as an example to describe in detail the improved technical solution of the air conditioner in this embodiment.

[0054] As shown in Figure 1, in some embodiments, the air conditioner may include a housing 1. The housing 1 may be constructed as the outer shell of the air conditioner. A receiving space 101 may be provided inside the housing 1. The housing 1 may adopt a hollow structure such as a cuboid. It should be noted that the housing 1 may form the outer shell of the air conditioner. The housing 1 may adopt other hollow shell structures.

[0055] As shown in Figure 2, in some embodiments, the air conditioner may include a refrigerant circulation loop. The refrigerant circulation loop may include a compressor 21, an outdoor heat exchanger 22, and an indoor heat exchanger 23 connected end-to-end. The refrigerant circulates within the refrigerant circulation loop formed by the compressor 21, the outdoor heat exchanger 22, and the indoor heat exchanger 23. During the refrigerant circulation process, the outdoor heat exchanger 22 and the indoor heat exchanger 23 can respectively function as a condenser and an evaporator, allowing the refrigerant to absorb heat through evaporation in the evaporator and release heat through condensation in the condenser, thereby executing either a cooling cycle or a heating cycle for the air conditioner.

[0056] Specifically, in the refrigeration cycle, the outdoor heat exchanger 22 can act as a condenser, and the indoor heat exchanger 23 can act as an evaporator. In the heating cycle, the outdoor heat exchanger 22 can act as an evaporator, and the indoor heat exchanger 23 can act as a condenser.

[0057] It should be noted that both the refrigeration and heating cycles involve a series of processes, including compression, condensation, expansion, and evaporation, and the supply of refrigerant to the conditioned and heat-exchanged air.

[0058] Compressor 21 is used to compress refrigerant gas and discharge the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser.

[0059] The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0060] The evaporator evaporates the expanded refrigerant and returns the refrigerant gas, now at a low temperature and low pressure, to the compressor 21. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the surrounding environment.

[0061] Throughout the cycle, the air conditioner can regulate the temperature of the indoor space, improve the comfort of the indoor space, and enhance the user experience.

[0062] As shown in Figure 2, in some embodiments, the air conditioner may include an outdoor fan assembly 24. The outdoor fan assembly 24 may be arranged opposite to the outdoor heat exchanger 22. The outdoor fan assembly 24 can be used to introduce outdoor air into the casing to exchange heat with the outdoor heat exchanger 22, forming a heat exchange airflow.

[0063] For example, during the cooling cycle, the outdoor heat exchanger 22 acts as a condenser, and the outdoor fan assembly 24 can draw in outside air and blow it onto the outdoor heat exchanger 22 to dissipate heat and lower its temperature. During the heating cycle, the outdoor heat exchanger 22 acts as an evaporator, and the outdoor fan assembly 24 can draw in outside air and blow it onto the outdoor heat exchanger 22 to raise its temperature.

[0064] As shown in Figure 3, in some embodiments, the air conditioner may include an indoor fan assembly 4. The indoor fan assembly 4 may be arranged opposite to the indoor heat exchanger 23. The indoor fan assembly 4 can be used to introduce indoor air into the casing to exchange heat with the indoor heat exchanger 23, forming a heat exchange airflow.

[0065] For example, during the refrigeration cycle, the indoor heat exchanger 23 acts as an evaporator. The indoor fan assembly 4 can draw indoor air from outside the casing and blow it towards the indoor heat exchanger 23 to exchange heat with it, thereby reducing the temperature of the air flowing through the indoor heat exchanger 23 and blowing the cooled air back into the room to lower the indoor air temperature.

[0066] For example, during the heating cycle, the indoor heat exchanger 23 acts as a condenser, and the outdoor fan assembly 24 can draw indoor air from outside the casing and blow it towards the indoor heat exchanger 23 to exchange heat with it, raising the temperature of the air flowing through the indoor heat exchanger 23, and then blowing the heated air back into the room to raise the indoor air temperature.

[0067] As shown in Figure 2, in some embodiments, the compressor 21, outdoor heat exchanger 22, outdoor fan assembly 24, indoor heat exchanger 23, and indoor fan assembly 4 can be respectively arranged in the receiving space inside the casing. In this way, the casing can cover and protect them, preventing the erosion of foreign objects or the impact of external forces from causing structural damage, thereby improving the structural reliability of the air conditioner and ensuring that the air conditioner can work normally.

[0068] As shown in Figure 2, in some embodiments, the internal accommodating space 101 of the casing 1 may include three sub-spaces. These three sub-spaces are, from bottom to top, a first sub-space 110, a second sub-space 120, and a third sub-space 130. The compressor 21 can be housed in the first sub-space 110. The outdoor heat exchanger 22 and the outdoor fan assembly 24 can be housed in the second sub-space 120. The indoor heat exchanger 24 and the indoor fan assembly 3 can be housed in the third sub-space 130. Thus, by using three layers of sub-spaces from bottom to top, the compressor 21, outdoor heat exchanger 22, outdoor fan assembly 24, indoor heat exchanger 23, and indoor fan assembly 3 can be distributed at different heights within the casing 1, which helps to increase the overall height of the air conditioner, reduce its width and thickness, and minimize the space occupied by the air conditioner in the operating area.

[0069] As shown in Figures 1 and 2, in some embodiments, the air conditioner may include a housing 1, which includes a main housing 11 and a chassis 12, with the chassis 12 located at the bottom of the main housing 11. The main housing 11 and the chassis 12 form an internal receiving space 101. The air conditioner may include a refrigerant circulation loop, which is disposed in the receiving space 101 and includes a compressor 21, a condenser, and an evaporator connected end-to-end. One of the condenser and the evaporator is an outdoor heat exchanger 22, and the other is an indoor heat exchanger 23. The air conditioner may include an outdoor fan assembly 24, which is disposed on one side of the outdoor heat exchanger 22 to drive outdoor air to flow through the outdoor heat exchanger 22 for heat exchange. The air conditioner may include an indoor fan assembly 4, which is disposed on one side of the indoor heat exchanger 23 to drive indoor air to flow through the indoor heat exchanger 23 for heat exchange. The air conditioner may include a second drip tray 5, with the outdoor heat exchanger 22 disposed above the second drip tray 5. The air conditioner may include a first drip tray 6, with an indoor heat exchanger 23 positioned above it. The first drip tray 6 is positioned above the outdoor heat exchanger 22. The air conditioner may include an air inlet duct 14 for delivering outdoor air to the outdoor heat exchanger 22 for heat exchange. The air conditioner may include an air outlet duct 15 for delivering the heat-exchanged air to the outside under the action of the outdoor fan assembly 3. The air inlet duct 14 and the air outlet duct 15 are positioned above the outdoor heat exchanger 22 and are horizontally spaced from the indoor fan assembly 4. The compressor 21 is positioned at the bottom of the casing 1, and the first drip tray 6 is positioned above the compressor 21.

[0070] As shown in Figure 3, in some embodiments, the indoor fan assembly 3 may include a duct housing 31. The duct housing 31 may be disposed within a housing. The duct housing 31 may be provided with an air outlet 301 so that air entering the air conditioner and exchanging heat with the indoor air can be delivered to the indoor air through the air outlet 301 of the indoor duct assembly.

[0071] As shown in Figure 3, in some embodiments, the indoor fan assembly 3 may include an indoor impeller 32. The indoor impeller 32 is rotatably disposed within the duct housing 31. When the indoor impeller 32 rotates, the air conditioner can draw air from the room, which flows through the indoor heat exchanger 23 for heat exchange, and then is delivered to the outside through the air outlet 301 of the duct housing 31. As shown in Figure 3, in some embodiments, the indoor impeller 32 may be configured as a cross-flow impeller.

[0072] As shown in Figure 4, in some embodiments, the indoor fan 32 can be arranged along the height of the air conditioner. The upper end of the indoor fan 32 can be rotatably connected to the upper end of the duct housing 31. The lower end of the indoor fan 32 can be rotatably connected to the lower end of the duct housing 31.

[0073] As shown in Figure 4, in some embodiments, the indoor heat exchange system may include an indoor motor 33. The indoor motor 33 can be used to drive the indoor fan wheel 32 to rotate.

[0074] As shown in Figure 4, in some embodiments, the lower end of the indoor fan 32 is provided with a lower end cover 321. The lower end cover 321 may be provided with a rotatable connection hole. The indoor motor 33 can be connected to the lower end cover 321 of the indoor fan 32 through the rotatable connection hole, thereby driving the indoor fan 32 to rotate.

[0075] As shown in Figure 5, in some embodiments, the indoor motor 33 may be located at the bottom of the duct housing 31. The top of the indoor motor 33 may be provided with an output shaft 331 and a shaft hole 332. The output shaft 331 may extend upward through the shaft hole 332. The output shaft 331 may extend into the duct housing 31 and be connected to the lower end cover 321 for transmission.

[0076] As shown in Figure 6, in some embodiments, the indoor fan assembly 3 may include a shielding member 34. The shielding member 34 may be sleeved on the output shaft 331. The shielding member 34 may be circumferentially arranged around the outer periphery of the output shaft 331. The shielding member 34 may shield the area above the shaft hole 332.

[0077] Since the indoor motor 33 is located at the bottom of the indoor impeller 32, condensate can flow downwards along the indoor impeller 32 or the output shaft 331 to the motor located below, and enter the indoor motor 33 through the shaft hole 332, causing the indoor motor 33 to become damp or rusty, thus affecting its operation. By installing a shielding member 34 on the output shaft 331 of the indoor motor 33, the shielding member 34 extends circumferentially along the output shaft 331, thereby blocking the condensate above and preventing the condensate from flowing directly along the output shaft 331 into the shaft hole 332 below.

[0078] As shown in Figure 7, in some embodiments, the bottom surface of the lower end cover 321 may have an upwardly recessed mounting space 3210. The shielding member 34 may be disposed within the mounting space 3210. By forming an upwardly recessed groove inside the lower end cover 321 and installing the shielding member 34 within the mounting space 3210, the vertical space of the indoor fan wheel 32 can be effectively utilized.

[0079] In related technologies, the drive motor is mainly positioned above the cross-flow indoor fan 32. However, this increases the vertical installation space 3210 of the indoor fan 32, resulting in a larger unit size, which not only increases manufacturing costs but also reduces the amount of material that can be packed during transport. While installing the drive motor at the bottom of the cross-flow duct reduces the space occupied, moisture in the air easily condenses inside the duct housing 31 during indoor cooling. This condensate may drip along the airflow direction, and especially when the motor is installed at the bottom of the duct, it can easily accumulate and seep into the motor, causing it to rust.

[0080] In the air conditioner disclosed herein, by providing an upwardly recessed mounting space 3210 for the lower end cover 321 of the indoor fan 32, the shielding member 34 can be housed within the mounting space 3210. This eliminates the need for additional space to install waterproof components within the indoor fan 32. In the vertical direction of the air conditioner, the mounting position of the shielding member 34 overlaps with the lower end mounting space 3210 of the indoor fan 32, thereby reducing the space occupied within the air conditioner and making its installation structure more compact. Furthermore, the shielding member 34, fitted onto the output shaft 331 and extending circumferentially towards the output shaft 331, forms a physical barrier above the shaft hole 332, shielding the shaft hole 332 below and preventing condensate from directly entering the drive motor through the shaft hole 332. This avoids the risk of the drive motor becoming damp, rusted, or short-circuited, providing excellent waterproofing.

[0081] As shown in Figure 7, in some embodiments, the lower end cover 321 may include a base plate 3211. The base plate 3211 may be located at the lower end of the indoor fan wheel 32. The base plate 3211 may have a clearance opening 3213. The clearance opening 3213 may communicate with the installation space 3210. The motor output shaft 331 may extend into the installation space 3210 through the clearance opening 3213, and the motor output shaft 331 may be connected to the base plate 3211 in a driving connection.

[0082] As shown in Figure 7, in some embodiments, the lower end cover 321 may include a boss 3212. The boss 3212 may be located at the clearance opening 3213 of the base plate 3211. The boss 3212 may extend upward from the clearance opening 3213 of the base plate 3211. An installation space 3210 may be formed within the boss 3212. The top wall 32121 of the boss 3212 may be located above the clearance opening 3213. The indoor motor 33 may extend into the installation space 3210 and be connected to the top wall 32121 of the boss 3212 in a driving connection. Specifically, the boss 3212 extends upward from the clearance opening 3213 of the base plate 3211 to form the installation space 3210, so that part of the indoor motor 33 and the shielding member 34 can be partially embedded inside the boss 3212, rather than completely occupying the bottom space of the air duct. This reduces the space occupied inside the air conditioner and makes the structure more compact. Moreover, since the installation space 3210 is surrounded by the boss 3212, even if the condensate flows along the bottom of the indoor fan, it is more likely to be blocked by the side wall of the boss 3212 or guided to other drainage paths, reducing the risk of directly entering the indoor motor 33 downwards.

[0083] As shown in Figures 6 and 7, in some embodiments, the peripheral sidewall 32122 of the boss 3212 can be bent upward from the clearance opening 3213 of the base plate 3211. The peripheral sidewall 32122 of the boss 3212 can be connected between the base plate 3211 and the top wall 32121 of the boss 3212. In the top-to-bottom direction, the peripheral sidewall 32122 of the boss 3212 can be inclined toward an axis away from the output shaft 331.

[0084] The top wall 32121 of the boss 3212 is located above the peripheral wall 32122 of the boss 3212, and the lower part of the peripheral wall 32122 of the boss 3212 is connected to the clearance opening 3213 of the base plate 3211. By tilting the peripheral wall 32122 of the boss 3212 towards the axis away from the output shaft 331 in the downward direction, that is, by setting the lower end of the peripheral wall 32122 away from the output shaft 331, even if condensate or water vapor condenses on the surface of the boss 3212, it can flow away from the output shaft 331 along the tilt direction of the peripheral wall 32122 of the boss 3212, thereby reducing the risk of condensate entering the shaft hole 332 of the indoor motor 33. At the same time, the tilted setting of the peripheral wall 32122 of the boss 3212 facilitates the drainage of condensate, avoids water accumulation around the motor, and further improves the waterproof effect.

[0085] In some other embodiments, the peripheral sidewall 32122 of the boss 3212 may be arranged vertically downward. Specifically, the peripheral sidewall 32122 of the boss 3212 may be cylindrical.

[0086] As shown in Figures 6 and 7, in some embodiments, the boss 3212 and the base plate 3211 can be integrally formed. Thus, compared to separately splicing the boss 3212 and the base plate 3211 or adding additional support components, the integrally formed structure improves the structural rigidity of the lower end plate and reduces deformation caused by high-speed rotation of the indoor fan or external vibration, thereby contributing to the long-term stable operation of the motor and fan.

[0087] As shown in Figure 6, in some embodiments, the shaft surface of the output shaft 331 may be recessed with a groove (not shown in the figure). The shielding member 34 can be nested in the groove. In this way, the groove allows the shielding member 34 to be installed more tightly on the output shaft 331, preventing displacement or loosening due to the high-speed operation or vibration of the indoor fan 32. Moreover, the groove design allows for a tighter fit between the shielding member 34 and the output shaft 331, reducing the installation gap between them and preventing condensate from seeping along the output shaft 331 into the interior of the indoor motor 33.

[0088] As shown in Figure 6, in some embodiments, the shield 34 can be made of materials such as silicone or rubber. This can increase the tightness of the connection between the shield 34 and the output shaft 331, and further reduce the flow of condensate down from the gap between the output shaft 331 and the shield 34 into the interior motor 33.

[0089] As shown in Figures 8 and 9, in some embodiments, the shielding member 34 may include a shielding cover 341. The shielding cover 341 may be sleeved on the output shaft 331. The shielding cover 341 may be annular. The shielding cover 341 may circumferentially surround the outer periphery of the output shaft 331. The shielding cover 341 may be disposed above the shaft hole 332.

[0090] The shielding cover 341 is sleeved on the output shaft 331 and arranged in a ring shape. That is, the shielding cover 341 completely surrounds the output shaft 331 and circumferentially encloses the outside of the output shaft 331, thus forming a direct barrier above the shaft hole 332, thereby preventing condensate or water vapor from directly entering the shaft hole 332. On the other hand, the shielding cover 341, which is arranged circumferentially around the output shaft 331, can prevent additional vibration or eccentricity problems of the indoor motor 33 due to force imbalance when the fan rotates at high speed.

[0091] As shown in Figures 6 and 9, in some embodiments, the shielding member 34 may include a flow guide 342. The flow guide 342 may be annular. The flow guide 342 may circumferentially surround the outer periphery of the shielding cover 341. The flow guide 342 may extend downward along the circumferential edge of the shielding cover 341.

[0092] Specifically, the guide portion 342 surrounds the outer periphery of the shield cover 341 and extends downward along the circumferential edge of the shield cover 341, thus forming a downwardly extending annular structure. In this way, even if condensate flows along the shield cover 341, it will not drip directly into the shaft hole 332, but will be guided to the periphery by the guide portion 342, thereby reducing the risk of condensate entering the motor. Furthermore, the downwardly extending guide portion 342 also prevents water droplets from accumulating at the edge of the shield cover 341, reducing moisture retention and improving waterproof performance.

[0093] As shown in Figure 9, in some embodiments, the connection between the flow guide 342 and the shielding cover 341 can be an arc transition connection. This facilitates the condensate to flow sequentially along the shielding cover 341 and the flow guide 342 to a position away from the shaft hole 332, preventing condensate from accumulating on the shielding cover 341 or the flow guide 342.

[0094] As shown in Figure 9, in some embodiments, the top surface of the guide portion 342 may be provided with a guide surface 3421. In the top-to-bottom direction, the guide surface 3421 may be inclined towards the axis away from the output shaft 331. The inclined guide surface 3421 can guide condensate to flow away from the output shaft 331, preventing condensate from flowing towards the central shaft hole 332, thereby reducing the risk of condensate directly seeping into the interior motor 33 along the output shaft 331. It can also effectively reduce condensate stagnation around the shield 34 or the interior motor 33, reducing the risk of water accumulation. Furthermore, the inclined guide surface 3421 can utilize gravity to accelerate condensate drainage. Compared to horizontal or vertical designs, the inclined guide surface 3421 is more conducive to the rapid drainage of condensate, reducing water droplet accumulation.

[0095] As shown in Figure 9, in some embodiments, the guide portion 342 may be conical in shape.

[0096] In some other embodiments, the entire flow guide 342 may be arranged vertically downwards. The flow guide 342 may be cylindrical.

[0097] As shown in Figures 4 and 5, in some embodiments, the duct housing 31 may be provided with a mounting port 305. The mounting port 305 can be used to install a motor. The mounting port 305 may be located at the bottom of the duct housing 31. During installation, the output shaft 331 of the indoor motor 33 can extend into the installation space 3210 through the mounting port 305.

[0098] As shown in Figures 6 and 9, in some embodiments, the indoor fan assembly 3 may include a sealing sleeve 35. The sealing sleeve 35 may be fitted over the top of the indoor motor 33. The sealing sleeve 35 may be fitted over the outside of the output shaft 331. The sealing sleeve 35 may abut against the bottom wall of the duct housing 31 and the top of the indoor motor 33 to seal the gap between the mounting port 305 and the indoor motor 33.

[0099] Specifically, by fitting the sealing sleeve 35 onto the top of the indoor motor 33, the sealing sleeve 35 can abut against the air duct housing 31 during installation. This seals the gap between the mounting opening 305 of the air duct housing 31 and the indoor motor 33. Even if condensate accumulates at the bottom of the air duct housing 31, the sealing sleeve 35 effectively prevents condensate from directly seeping through the gap into the indoor motor 33 below, thus improving overall waterproofing performance.

[0100] As shown in Figure 9, in some embodiments, the sealing sleeve 35 can be made of an elastic material, such as silicone, rubber, or foam sealing material. This not only provides a better sealing effect but also absorbs vibrations during fan operation, reduces resonance, and lowers noise.

[0101] As shown in Figures 6 and 9, in some embodiments, the sealing sleeve 35 may have a first blocking portion 351 protruding on the side facing the shield 34. The first blocking portion 351 may be disposed around the periphery of the output shaft 331. The shield 34 may cover the top of the first blocking portion 351.

[0102] Specifically, the first enclosure 351 is raised around the periphery of the output shaft 331, thus forming an additional barrier around the output shaft 331, making it more difficult for condensate to penetrate into the area around the output shaft 331, further reducing the risk of condensate entering the motor. Moreover, since the shield 34 covers the first enclosure 351, the shield 34 can prevent the condensate above from flowing directly downwards into the shaft hole 332. Combined with the design of the first enclosure 351, it can further prevent the condensate on the periphery from flowing into the shaft hole 332. The shield 34 and the first enclosure 351 form a double waterproof structure for the shaft hole 332, reducing the risk of condensate penetrating into the interior of the motor 33.

[0103] As shown in Figure 9, in some embodiments, the first enclosure portion 351 and the sealing sleeve 35 can be integrally formed.

[0104] As shown in Figure 6, in some embodiments, the bottom wall of the duct housing 31 may be provided with a second enclosure portion 311. The second enclosure portion 311 may be provided around the peripheral edge of the mounting opening 305. The second enclosure portion 311 may be provided to protrude downward relative to the bottom wall of the duct housing 31. By providing the second enclosure portion 311 to protrude downward from the bottom wall of the duct housing 31, and by surrounding the second enclosure portion 311, a downwardly extending barrier can be formed at the peripheral edge of the mounting opening 305, further reducing the possibility of condensate entering the interior of the duct housing 31.

[0105] As shown in Figures 6 and 9, in some embodiments, the top of the sealing sleeve 35 may be provided with a sealing portion 352. The lower end of the sealing portion 352 may be installed inside the second enclosure portion 311 to seal the gap between the second enclosure portion 311 and the mounting opening 305.

[0106] Thus, the sealing part 352 is installed on the inner side of the second enclosure part 311, which can further fill and seal the gap between the enclosure part and the mounting port 305, thereby enhancing the sealing effect and effectively preventing condensate from penetrating into the interior of the indoor motor 33, thus improving the overall waterproof capability of the air conditioner.

[0107] As shown in Figures 8 and 9, in some embodiments, the sealing portion 352 may be in the form of annular steps. The annular stepped sealing portion 352 is arranged circumferentially around the top of the sealing portion 352, so that each position of the circumferential edge of the mounting port 305 can be abutted and sealed with the sealing portion 352.

[0108] As shown in Figures 6 and 9, in some embodiments, the sealing portion 352 may include a first stepped portion 3521. The first stepped portion 3521 can extend into the air duct housing 31 through the mounting port 305. The circumferential outer surface of the first stepped portion 3521 can abut against the circumferential inner surface of the mounting port 305. In this way, the gap between the mounting port 305 and the upper end of the sealing sleeve can be further sealed, effectively preventing condensate in the air duct housing 31 from seeping downwards into the motor through the mounting port 305.

[0109] As shown in Figures 6 and 9, in some embodiments, the sealing portion 352 may include a second stepped portion 3522. The second stepped portion 3522 may be located below the first stepped portion 3521. The diameter of the second stepped portion 3522 may be larger than that of the first stepped portion 3521. The second stepped portion 3522 may be nested within the inner surface of the second enclosure portion 311. In this way, the gap between the bottom of the air duct housing 31 and the lower end of the sealing sleeve can be further sealed, and in conjunction with the abutting sealing effect of the first stepped portion 3521 and the mounting port 305, the sealing portion 352 more effectively prevents condensate inside the air duct housing 31 from seeping downwards into the motor through the mounting port 305.

[0110] As shown in Figure 6, in some embodiments, the bottom wall of the duct housing 31 may be provided with a third enclosure portion 313. The third enclosure portion 313 may be disposed around the peripheral edge of the mounting opening 305. The third enclosure portion 313 may protrude upward relative to the bottom wall of the duct housing 31. The upper end of the sealing portion 352 may be installed inside the third enclosure portion 313 to seal the gap between the third enclosure portion 313 and the mounting opening 305.

[0111] Because the air conditioner is in a low-temperature environment inside the duct housing 31 during operation or after cooling has stopped, water molecules in the air easily condense, forming condensate. This moisture may seep along the edge of the mounting opening 305 to the indoor motor 33 below. The first step portion 3521 can be nested inside the third enclosure portion 313. By providing a raised third enclosure portion 313 on the duct housing 31, a first enclosure portion 351 on the outer side of the shaft hole 332, and a third enclosure portion 313 on the outer side of the first enclosure portion 351, a multi-layered waterproof structure is formed, effectively preventing condensate from entering the mounting opening 305. This provides good waterproofing for the indoor motor 33.

[0112] As shown in Figures 10, 11, and 12, in some embodiments, the bottom wall of the duct housing 31 may be provided with a surrounding plate 312. The surrounding plate 312 may be provided to protrude downward from the bottom wall of the duct housing 31. The surrounding plate 312 may be arranged around the periphery of the motor.

[0113] Specifically, the enclosure 312 is located on the outside of the second enclosure 311. By protruding downwards and surrounding the motor, the enclosure 312 forms a physical barrier, preventing condensate from flowing along the bottom wall of the duct housing 31 to the motor, effectively reducing the risk of water ingress into the motor. Furthermore, the presence of a sealing sleeve 35 at the upper end of the motor, a first enclosure 351 at the upper end of the sealing sleeve 35, and a second enclosure 311 protruding downwards from the bottom wall of the duct housing 31 creates a multi-layered waterproof structure. This prevents condensate from corroding the indoor motor 33 from various directions, including the upper end and the periphery of the indoor motor 33, ensuring the indoor motor 33 remains in a dry environment and further enhancing the overall waterproof performance.

[0114] In addition, the enclosure 312 surrounds the indoor motor 33, which can provide some support and stability, reduce the displacement or loosening of the indoor motor 33 due to vibration during operation, enhance the fixing effect, and improve the reliability of the indoor fan assembly 3.

[0115] As shown in Figure 12, in some embodiments, the enclosure 312 can protrude around a portion of the motor's periphery. This not only provides waterproofing and protection but also facilitates heat dissipation for the indoor motor 33.

[0116] As shown in Figures 3 and 4, in some embodiments, the indoor fan assembly 3 may further include a first water collection tray 6. The first water collection tray 6 may be located below the duct housing 31. The indoor heat exchanger 23 may be mounted on the first water collection tray 6 and arranged adjacent to the duct housing 31.

[0117] When the indoor heat exchanger 23 exchanges heat with the indoor air and then delivers cold air to the indoor environment, water molecules in the air are easily condensed on the surface of the indoor heat exchanger 23 to form condensate. The first drip tray 6 can collect the condensate to prevent it from dripping directly onto other electrical components inside the air conditioner and causing safety problems.

[0118] As shown in Figures 12 and 13, in some embodiments, the bottom wall of the first drip tray 6 may have an upwardly protruding mounting ring 601. The indoor motor 33 can be mounted on the mounting ring 601. The mounting ring 601 provides a fixed position for the indoor motor 33 within the first drip tray 6, and the protruding mounting ring 601 prevents condensate from the bottom of the first drip tray 6 from directly contacting the indoor motor 33.

[0119] As shown in Figures 12 and 13, in some embodiments, the bottom wall of the first drip tray 6 may have an upwardly protruding isolation ring 602. The isolation ring 602 may be spaced apart on the circumferential outer side of the mounting ring 601. The surrounding plate 312 may be positioned above and outside the isolation ring 602. Thus, the isolation ring 602 forms a waterproof barrier at the bottom of the first drip tray 6, preventing condensate from flowing directly to the mounting position of the indoor motor 33. Furthermore, the surrounding plate 312, positioned above and outside the isolation ring 602, allows condensate on the surrounding plate 312 to drip onto the outside of the isolation ring 602, rather than dripping directly onto the mounting position of the indoor motor 33.

[0120] In this way, the indoor motor 33 is installed below the indoor fan wheel 32, which can also prevent the condensate from directly contacting the indoor motor 33. This not only improves the compactness of the installation inside the air conditioner, but also improves the overall waterproof performance of the indoor motor 33, thus achieving the working stability and safety of the indoor fan assembly 3.

[0121] The air conditioner disclosed in this embodiment can also be used to solve the connection problem between the duct tongue and the duct casing, as well as the installation problem of the duct protective net.

[0122] To address the aforementioned issues, as shown in Figure 1, some embodiments of the present disclosure provide an air conditioner that may include a housing 1. The housing 1 may be configured as the outer casing of the air conditioner.

[0123] As shown in Figure 2, in some embodiments, the air conditioner may include a refrigerant circulation loop. The refrigerant circulation loop may include a compressor 21, an outdoor heat exchanger 22, and an indoor heat exchanger 23 connected end-to-end. The refrigerant circulates within the refrigerant circulation loop formed by the compressor 21, the outdoor heat exchanger 22, and the indoor heat exchanger 23. During the refrigerant circulation process, the outdoor heat exchanger 22 and the indoor heat exchanger 23 can respectively function as a condenser and an evaporator, allowing the refrigerant to absorb heat through evaporation in the evaporator and release heat through condensation in the condenser, thereby executing either a cooling cycle or a heating cycle for the air conditioner.

[0124] As shown in Figure 2, in some embodiments, the air conditioner may include an outdoor fan assembly 24. The outdoor fan assembly 24 may be arranged opposite to the outdoor heat exchanger 22. The outdoor fan assembly 24 can be used to introduce outdoor air into the casing 1 for heat exchange with the outdoor heat exchanger 22, forming a heat exchange airflow.

[0125] As shown in Figure 2, in some embodiments, the air conditioner may include an indoor fan assembly 3. The indoor fan assembly 3 may be arranged opposite to the indoor heat exchanger 23. The indoor fan assembly 3 can be used to introduce indoor air into the casing 1 for heat exchange with the indoor heat exchanger 23, forming a heat exchange airflow.

[0126] As shown in Figure 14, in some embodiments, the indoor fan assembly 3 may include a duct housing 31. The duct housing 31 may be disposed inside the housing 1. The duct housing 31 may be provided with an air outlet 301 to deliver air that has entered the air conditioner and exchanged heat with the indoor air to the indoor air conditioner through the air outlet 301 of the indoor fan assembly 3.

[0127] As shown in Figure 14, in some embodiments, an indoor air duct 3015 may be provided inside the air duct housing 31. The indoor air duct 3015 may be connected to the air outlet 301. The indoor fan assembly 3 may include an indoor impeller 32. The indoor impeller 3 may be configured as a cross-flow impeller. The indoor impeller 32 is rotatably disposed inside the air duct housing 31. The indoor impeller 32 can form airflow within the indoor air duct 3015. Specifically, when the indoor impeller 32 rotates, the air conditioner can draw air from the room, which flows through the indoor heat exchanger 23 for heat exchange, and then is delivered to the outside through the air outlet 301 of the air duct housing 31.

[0128] As shown in Figure 14, in some embodiments, the duct housing 31 may include a volute 314. The volute 314 may be disposed within the housing 1. An indoor air duct 3015 may be disposed within the volute 314. An air outlet 301 may be provided within the volute 314. The volute 314 may be disposed within the housing 1 along the height direction of the air conditioner. The volute 314 forms the main outer housing of the duct housing 31, and the indoor fan 32 may be installed within the volute 314.

[0129] As shown in Figure 14, in some embodiments, the duct housing 31 may include a volute tongue 315. The volute tongue 315 may be disposed within the volute housing 314. The volute tongue 315 may be arranged near the side of the air outlet 301. Specifically, the volute tongue 315 may be located on the lateral side of the air outlet 301. The volute tongue 315 and the volute housing 314 together define the indoor air duct 3015. The volute tongue 315 can be used to guide the airflow within the indoor air duct 3015 to flow smoothly out, thereby reducing wind resistance and improving wind speed and air outlet efficiency.

[0130] As shown in Figures 17 and 18, in some embodiments, the volute tongue 315 may include a windward wall 3152. The windward wall 3152 may be disposed towards the indoor air duct 3015. Specifically, the windward wall 3152 may be disposed on the side of the volute tongue 315 near the indoor impeller 32. The windward wall 3152 can guide the airflow within the indoor air duct 3015 to flow smoothly out along the windward wall 3152.

[0131] As shown in Figures 15, 16, and 18, in some embodiments, the volute tongue 315 may include a first guide wall 3153. The first guide wall 3153 may be positioned towards the air outlet 301. One side of the first guide wall 3153 may be connected to the side of the windward wall 3152 near the air outlet 301. Specifically, the first guide wall 3153 is located on the side of the windward wall 3152 near the air outlet 301, that is, the first guide wall 3153 is located on the front side of the windward wall 3152. The connection between the first guide wall 3153 and the side of the windward wall 3152 near the air outlet 301 can be a rounded transition. The first guide wall 3153 can be used to guide airflow smoothly into the air outlet 301, improving air delivery efficiency.

[0132] As shown in Figures 15, 16, and 18, in some embodiments, the volute 314 may include a second guide wall 3141. The second guide wall 3141 may be disposed on one side of the air outlet 301. The second guide wall 3141 may be connected to the side of the first guide wall 3153 away from the windward wall 3152. Specifically, the second guide wall 3141 of the volute 314 is disposed outside the first guide wall 3153, and the first guide wall 3153 is connected between the windward wall 3152 and the second guide wall 3141. The airflow of the indoor air duct 3015 can sequentially flow along the windward wall 3152, the first guide wall 3153, and the second guide wall 3141 before flowing to the air outlet 301.

[0133] As shown in Figures 16, 18, and 19, in some embodiments, the first guide wall 3153 may have a stepped groove 302 on the side facing the second guide wall 3141. The first guide wall 3153 may have a baffle 3159. The baffle 3159 may be located on the side of the stepped groove 302 near the air outlet 301. The second guide wall 3141 may have a limiting rib 3143 on the side near the first guide wall 3153. The limiting rib 3143 may be engaged within the stepped groove 302. The baffle 3159 can be engaged with the side of the limiting rib 3143 near the air outlet 301. The baffle 3159 can cover at least a portion of the area of ​​the limiting rib 3143 near the air outlet 301 in the gap 303 between the limiting rib 3143 and the first guide wall 3153, so that the baffle 3159 can block the side of the limiting rib 3143 near the air outlet 301 in the gap 303 between the limiting rib 3143 and the first guide wall 3153.

[0134] As shown in Figure 19, it should be noted that the limiting rib 3143 is engaged in the step groove 302, and there will also be a certain gap 303 between the limiting rib 3143 and the wall of the step groove 302.

[0135] Specifically, as shown in Figure 19, the first guide wall 3153 has a stepped groove 302 on the side facing the second guide wall 3141. The stepped groove 302 provides a space for the second guide wall 3141 to be installed on the first guide wall 3153. The side of the second guide wall 3141 near the first guide wall 3153 may have a limiting rib 3143. The limiting rib 3143 can be engaged in the stepped groove 302, thereby engaging the second guide wall 3141 on the first guide wall 3153, and connecting the volute tongue 315 and the volute shell 314 on the side near the air outlet 301. Furthermore, by providing a baffle 3159 on the side of the first guide wall 3153 near the air outlet 301, the baffle 3159 can be provided protruding towards the stepped groove 302, thereby blocking the gap 303 between the limiting rib 3143 and the first guide wall 3153 on the side near the air outlet 301. The baffle 3159 can not only further limit the limiting rib 3143 in the stepped groove 302, improving the stability of the snap-fit ​​structure between the second guide wall 3141 and the first guide wall 3153, but also directly block the gap 303 between the limiting rib 3143 and the first guide wall 3153, thereby preventing the airflow of the indoor air duct 3015 from flowing directly to the air outlet 301 through the gap 303 between the limiting rib 3143 and the first guide wall 3153, effectively reducing the risk of airflow leakage.

[0136] Currently, due to machining errors or assembly tolerances, the connection between the volute tongue 315 and the volute housing 314 often produces a small gap 303, or the original connection structure between the volute tongue 315 and the volute housing 314 is unreasonable, which can easily cause gaps at the connection between the volute tongue 315 and the volute housing 314. This makes it easy for the airflow of the indoor air duct 3015 to leak through the connection between the volute tongue 315 and the volute housing 314, resulting in condensation on the volute tongue 315 or affecting the gas flow efficiency.

[0137] As shown in Figure 19, this technical solution provides a stepped groove 302 at the connection between the volute tongue 315 and the air outlet 301, and a limiting rib 3143 is provided on the second guide wall 3141 of the volute 314. The limiting rib 3143 is engaged in the stepped groove 302, thereby making the connection between the volute tongue 315 and the volute 314 near the air outlet 301 fit tightly, which can reduce the size of the gap 303 at the connection between the volute tongue 315 and the volute 314. Furthermore, by providing a baffle 3159 on the side of the first guide wall 3153 facing the air outlet 301, and the baffle 3159 being located within the stepped groove 302, thereby blocking the limiting rib 3143 on the side near the air outlet 301 in the gap 303 between it and the first guide wall 3153, the volute tongue 315 can not only be tightly engaged with the volute shell 314, but also block the gap 303 between the limiting rib 3143 and the first guide wall 3153, thereby preventing air leakage at the connection between the volute tongue 315 and the volute shell 314, and improving the sealing performance of the air duct shell 31 formed by the cooperation of the volute tongue 315 and the volute shell 314.

[0138] In some other embodiments, the baffle 3159 may protrude relative to the groove wall of the stepped groove 302, and the baffle 3159 makes the mating surface between the stepped groove 302 and the limiting rib 3143 a non-flat surface. Correspondingly, the limiting rib 3143 is configured with a surface adapted to the surface of the stepped groove 302, which can reduce the gap 303 formed at the mating point of the volute tongue 315 and the volute shell 314 by increasing the contact surface between the limiting rib 3143 and the stepped groove 302.

[0139] As shown in Figure 19, in some embodiments, a limiting groove 304 may be provided on the side of the limiting rib 3143 facing the air outlet 301. The baffle rib 3159 can rest within the limiting groove 304. Specifically, by providing the limiting groove 304 on the side of the limiting rib 3143 facing the air outlet 301 and placing the baffle rib 3159 within the limiting groove 304, the cooperative arrangement of the baffle rib 3159 and the limiting groove 304 allows the first guide wall 3153 and the second guide wall 3141 to form a tight contact during cooperation. The protruding rib can be embedded in the limiting groove 304 to form a snap-fit ​​structure, and the tight contact further reduces the gap between the first guide wall 3153 and the second guide wall 3141. Furthermore, the cooperation between the limiting groove 304 and the baffle 3159 can increase the contact area of ​​the sealing surface between the limiting rib 3143 and the second guide wall 3141. Compared with the fact that the contact surface between the limiting groove 304 and the limiting rib 3143 is only a plane, the structure of the limiting groove 304 on the side of the limiting rib 3143 facing the air outlet 301 can provide more contact points at the cooperation between the baffle rib 3159 and the limiting rib 3143, thereby enhancing the shielding effect on the gap 303, effectively reducing the risk of airflow leakage from the connection between the volute tongue 315 and the volute housing 314, and improving the sealing reliability after the volute tongue 315 and the volute housing 314 are assembled.

[0140] As shown in Figures 18 and 19, in some embodiments, the volute tongue 315 may include a limiting wall 3154. The limiting wall 3154 may be disposed on the side of the first guide wall 3153 away from the windward wall 3152. A stepped groove 302 may be formed between the side of the limiting wall 3154 near the air outlet 301 and the end wall of the first guide wall 3153 facing the air outlet 301. A second guide wall 3141 may abut against the side of the limiting wall 3154 facing the air outlet 301. Specifically, the limiting wall 3154 is provided on the side of the first guide wall 3153 facing the air outlet 301, and one side wall of the stepped groove 302 can be formed on the side of the limiting wall 3154 facing the air outlet 301. One side of the second guide wall 3141 abuts against the limiting wall 3154, and the limiting rib 3143 abuts against the first guide wall 3153. That is, the stepped groove 302 is formed between the side of the limiting wall 3154 near the air outlet 301 and the end of the first guide wall 3153 facing the air outlet 301.

[0141] By providing a limiting wall 3154 on the side of the first guide wall 3153 away from the windward wall 3152, and the limiting wall 3154 is used to define a stepped groove 302 with the first guide wall 3153, the contact area between the second guide wall 3141 and the volute tongue 315 can be increased. When the limiting rib 3143 is inserted into the stepped groove 302, the second guide wall 3141 also abuts against the limiting wall 3154, thereby increasing the contact area between the second guide wall 3141 and the first guide wall 3153, thereby increasing the shielding effect on the gap 303 at the connection between the volute tongue 315 and the volute shell 314.

[0142] As shown in Figure 19, in some embodiments, the stepped groove 302 can be an L-shaped slot. In this way, the two surfaces of the second guide wall 3141 and the stepped groove 302 that abut against each other are intersecting, that is, the two surfaces of the second guide wall 3141 and the stepped groove 302 that abut against each other are not on the same plane, so that the airflow is not easy to flow directly from the airflow in the indoor air duct 3015 to the air outlet 301 through the abutment of the two.

[0143] As shown in Figures 15 and 16, in some embodiments, the second guide wall 3141 can be arranged along the height direction of the air conditioner. A first notch 3051 can be provided on the upper end of the second guide wall 3141 near the first guide wall 3153. A second notch 3052 can be provided on the lower end of the second guide wall 3141 near the first guide wall 3153. The portion of the second guide wall 3141 located between the first notch 3051 and the second notch 3052 can form an elastic connection portion 3144. A limiting rib 3143 can be provided on the end of the elastic connection portion 3144 near the first guide wall 3153. Specifically, the volute 314 is arranged inside the air conditioner along the height direction, the volute tongue 315 is arranged inside the volute 314 along the height direction, and correspondingly, the second guide wall 3141 is arranged on the side of the first guide wall 3153 near the air outlet 301 along the height direction of the air conditioner. The upper and lower ends of the second guide wall 3141 are respectively provided with a first notch 3051 and a second notch 3052, so that neither the upper nor lower ends of the second guide wall 3141 are connected to the volute 314. The portion of the second guide wall 3141 located between the first notch 3051 and the second notch 3052 forms an elastic connection portion 3144. Since the portion of the second guide wall 3141 located between the first notch 3051 and the second notch 3052 can serve as a suspended end, the second guide wall 3141 has a certain deformation capability. During the engagement process between the second guide wall 3141 and the first guide wall 3153, the second guide wall 3141 can generate a certain elastic deformation, allowing the limiting rib 3143 to be more smoothly engaged in the stepped groove 302.

[0144] On the other hand, since the volute 314 and volute tongue 315 are prone to slight dimensional errors during the manufacturing process, rigid structures may have difficulty adapting to these errors, potentially leading to assembly difficulties or loose connections. This can result in an increased gap 303 between the first guide wall 3153 and the second guide wall 3141, causing air leakage. In this embodiment, an elastic connecting portion 3144 is formed between the first notch 3051 and the second notch 3052, giving the second guide wall 3141 a certain deformation capability, thereby adapting to different assembly tolerances and improving assembly convenience.

[0145] As shown in Figure 16, in some embodiments, the second guide wall 3141 may be provided with a third notch 3053. The third notch 3053 may be located between the first notch 3051 and the second notch 3052 to divide the elastic connecting portion 3144 into two elastic connecting units 31441.

[0146] Specifically, by adding a third notch 3053 to the second guide wall 3141, the third notch 3053 divides the elastic connecting part 3144 into two independent connecting units 31441, so that each connecting unit 31441 has a certain deformation capacity. In this way, the two independent connecting units 31441 can be finely adjusted separately. During the engagement of the second guide wall 3141 and the first guide wall 3153, the two independent connecting units 31441 can be deformed and adjusted separately, improving the success rate of assembly and reducing plastic deformation or material damage caused by excessive deformation. Moreover, it can also avoid the problem of stress concentration in the second guide wall 3141, which is far from the upper and lower ends, during the engagement process.

[0147] As shown in Figure 16, in some embodiments, the second guide wall 3141 may also be provided with a fourth notch (not shown in the figure), so that the elastic connecting portion 3144 is divided into three elastic connecting units 31441. The number of notches can be adjusted according to actual product requirements, and is not limited here.

[0148] It should be noted that the first notch 3051, the second notch 3052, the third notch 3053, and the fourth notch are all within the shielding range of the limiting wall. That is, the limiting wall 3154 extends to the side of the first notch 3051, the second notch 3052, the third notch 3053, and the fourth notch away from the air outlet, which can prevent air leakage in the indoor air duct through the notches.

[0149] As shown in Figures 20 and 21, in some embodiments, the volute 314 can be arranged along the height direction of the air conditioner. The volute tongue 315 can be arranged within the volute 314 along the height direction of the air conditioner. A first mounting portion 3155 can be formed at the upper end of the volute tongue 315. A first sliding groove 3061 can be recessed at the upper end of the volute 314. The first sliding groove 3061 can have a first open end 3063. The first open end 3063 can be disposed facing the outside of the volute 314. The first mounting portion 3155 can be inserted and mounted into the first sliding groove 3061 through the first open end 3063.

[0150] Specifically, a first groove 3061 is recessed at the upper end of the volute 314. Correspondingly, a first mounting portion 3155 formed at the upper end of the volute tongue 315 can be inserted into the first groove 3061. When the first mounting portion 3155 is inserted into place, the volute tongue 315 can fit tightly against the upper end of the volute 314, forming a tight connection between the upper end of the volute tongue 315 and the upper end of the volute 314. This reduces the gap 303 between the volute tongue 315 and the volute 314 at the upper connection point, preventing air leakage in the indoor air duct 3015 at the connection point. On the other hand, the volute tongue 315 and the volute 314 are installed using a groove-type insertion method. The operator only needs to align the first opening end 3063 and slide the first mounting portion 3155 of the volute tongue 315 into it to complete the installation, which can improve installation efficiency.

[0151] As shown in Figures 20 and 21, in some embodiments, the first mounting part 3155 may be provided with a first buckle 3156 facing the first sliding groove 3061. The first sliding groove 3061 may be provided with a first snap-fit ​​hole 3071. When the first mounting part 3155 and the first sliding groove 3061 are installed in place, the first buckle 3156 can snap into the first snap-fit ​​hole 3071. However, since the volute tongue 315 and the volute housing 314 are assembled into the duct housing 31, under the action of the cross-flow fan, the airflow in the indoor duct 3015 will also exert a force on the volute tongue 315 and the volute housing 314 during the flow process, which can easily affect the stability of the assembly structure between the volute tongue 315 and the volute housing 314. By providing a first buckle 3156 in the first mounting part 3155 facing the first slide groove 3061, and the first slide groove 3061 having a first locking hole 3071, after the first mounting part 3155 slides into the first slide groove 3061, the first buckle 3156 automatically engages with the first locking hole 3071, thereby fixing the upper end of the volute tongue 315 to the upper end of the volute housing 314, and providing additional mechanical locking force for the volute tongue 315 after it slides into the first slide groove 3061, making the volute tongue 315 stable and not wobbling.

[0152] As shown in Figures 20 and 21, in some embodiments, a second mounting portion 3157 may be formed at the lower end of the volute tongue 315. A second sliding groove 3062 may be recessed at the lower end of the volute housing 314. The second sliding groove 3062 may have a second open end 3064. The second open end 3064 may be disposed facing outward of the volute housing 314. The second mounting portion 3157 can be inserted and mounted in the second sliding groove 3062 through the second open end 3064.

[0153] Specifically, a second groove 3062 is recessed at the lower end of the volute 314. Correspondingly, a second mounting portion 3157 formed at the lower end of the volute tongue 315 can be inserted into the second groove 3062. When the second mounting portion 3157 is inserted into place, the volute tongue 315 can fit tightly against the lower end of the volute 314, forming a tight connection between the lower end of the volute tongue 315 and the lower end of the volute 314. This reduces the gap 303 between the volute tongue 315 and the volute 314 at the lower end connection, preventing air leakage in the indoor air duct 3015 at the upper end connection point. On the other hand, the volute tongue 315 and the volute 314 are installed using a groove-type insertion method. The operator only needs to align the second opening end 3064 and slide the second mounting portion 3157 of the volute tongue 315 into it to complete the installation, which can improve installation efficiency.

[0154] As shown in Figures 20 and 21, in some embodiments, the first groove 3061 and the second groove 3062 can be arranged opposite to each other at the upper and lower ends of the volute 314. Thus, during assembly, the volute tongue 315 can be directly pushed into the volute 314 by aligning its upper and lower ends with the first opening end 3063 and the second opening end 3064, respectively. Then, the limiting rib 3143 is engaged in the stepped groove 302, allowing the volute tongue 315 to be installed on the volute 314.

[0155] As shown in Figures 20 and 21, in some embodiments, the second mounting portion 3157 may be provided with a second latch 3158 facing the second slide groove 3062. The second slide groove 3062 may be provided with a second engaging hole 3072. When the second mounting portion 3157 and the second slide groove 3062 are installed in place, the second latch 3158 can engage in the first engaging hole 3071.

[0156] Since the volute tongue 315 and volute housing 314 are assembled into the air duct housing 31, the airflow in the indoor air duct 3015 will exert a force on the volute tongue 315 and volute housing 314 during the flow process under the action of the cross-flow fan. By providing a second buckle 3158 on the second mounting part 3157 facing the second slide groove 3062, and the second slide groove 3062 is provided with a second locking hole 3072, after the second mounting part 3157 slides into the second slide groove 3062, the second buckle 3158 automatically locks into the second locking hole 3072, thereby fixing the upper end of the volute tongue 315 to the upper end of the volute housing 314, and thus providing additional mechanical locking force for the volute tongue 315 after it slides into the second slide groove 3062, making the volute tongue 315 stable and not wobbling.

[0157] As shown in Figures 14 and 22, in some embodiments, the indoor fan assembly 3 may include a protective net 37. The protective net 37 may be installed over the air outlet 301. By installing the protective net 37 over the air outlet 301, it is possible to effectively prevent users from accidentally touching or putting their hands into the air duct housing 31 of the air-conditioned room, and thus contacting the indoor fan wheel 32, thereby improving user safety.

[0158] As shown in Figures 22 and 23, in some embodiments, the duct housing 31 may have a slot 3011 on the side near the air outlet 301. The protective net 37 may have a plug-in portion 371 arranged opposite to the slot 3011 on one side. The plug-in portion 371 of the protective net 37 can be inserted into the slot 3011, so that one side of the protective net 37 can be fixed to one side of the air outlet 301.

[0159] The side of the duct housing 31 near the air outlet 301 can be the side of the air outlet 301 along the height direction of the air conditioner. A slot 3011 is provided on the side wall of the side of the air outlet 301 along the height direction of the air conditioner. A plug-in part 371 is provided on the side of the protective net 37 near the slot 3011. The plug-in part 371 is inserted into the plug-in slot, so that the protective net 37 and the duct housing 31 can be fixed by the plug-in structure, thereby limiting one side of the protective net 37 to the duct housing 31.

[0160] As shown in Figures 24 and 25, in some embodiments, the duct housing 31 may have an abutment groove 3012 on the side near the air outlet 301. The other side of the protective net 37 may have an abutment portion 372 arranged opposite to the abutment groove 3012. The abutment portion 372 of the protective net 37 can abut within the abutment groove 3012. Thus, the opposite sides of the protective net 37 can be fixed to the opposite sides of the air outlet 301.

[0161] The side of the duct housing 31 near the air outlet 301 can be the other side of the air outlet 301 along the height direction of the air conditioner. The slot 3011 and the abutment groove 3012 can be respectively provided on opposite sides of the air outlet 301. The side wall of the air outlet 301 along the height direction of the air conditioner is provided with an abutment groove 3012, and the protective net 37 near the abutment groove 3012 is provided with an abutment part 372. The abutment part 372 is inserted into the abutment groove 3012, so that the protective net 37 and the duct housing 31 can be fixed by the abutment structure, thereby limiting the other side of the protective net 37 to the duct housing 31.

[0162] Currently, most protective netting (37) is fixed with screws, but over time it is prone to rust, affecting its appearance, and it is also inconvenient for users to disassemble, clean, and install. Alternatively, some netting uses a detachable snap-fit ​​structure for installation, but this often results in the protective netting (37) being structurally unstable and prone to loosening and falling off.

[0163] In the air conditioner of this embodiment, a slot 3011 is provided on the side of the duct housing 31 near the air outlet 301, and a plug-in portion 371 is provided on the corresponding side of the protective net 37, which is arranged opposite to the slot 3011. An abutment groove 3012 is provided on the other side of the duct housing 31 near the air outlet 301, and an abutment portion 372 is provided on the corresponding side of the protective net 37, which is arranged opposite to the abutment groove 3012. One side of the protective net 37 can be inserted into the duct housing 31, and the other side of the protective net 37 can abut against the duct housing 31. In this way, during the installation of the protective net 37, the user can first align the plug-in portion 371 with the slot 3011 and insert the plug-in portion 371 into the slot 3011, and then align the abutment portion 372 on the other side of the protective net 37 with the abutment groove 3012 and push the abutment portion 372 into the abutment groove 3012, simplifying the installation and disassembly process. Moreover, the side of the protective net 37 that abuts against the air duct shell 31 can provide a certain support for the protective net 37, so that the protective net 37 can better resist deformation and damage when subjected to impact.

[0164] Thus, the protective net 37 is connected to the duct shell 31 on both sides through a double fixing method of abutment and snap-fit, which can effectively disperse the stress of the protective net 37 when subjected to external forces. When the air conditioner is running, the airflow in the duct may exert a certain impact force on the protective net 37. The protective net 37 may also be subjected to a certain impact force when moving the air conditioner or in other usage scenarios. Through the cooperation of abutment and snap-fit, this impact force can be effectively dispersed onto the duct shell 31, thereby reducing the risk of damage to the protective net 37 and improving the stability and impact resistance of the protective net 37. Moreover, compared with related technologies, it not only solves the problem of easy rusting of screw structures, which affects user use and appearance, but also has good impact resistance.

[0165] As shown in Figures 24 and 25, in some embodiments, the volute tongue 315 may have an abutment groove 3012 on the side facing the protective net 37. The protective net 37 may have an abutment portion 372 on the side facing the first guide wall 3153. The abutment portion 372 can be aligned and abutted within the abutment groove 3012, so that one side of the protective net 37 is fixed to the volute tongue 315.

[0166] By setting the abutment groove 3012 on the outer wall of the volute tongue 315 facing the protective net 37, the protective net 37 can not only be fixed to the air outlet 301 through the cooperation of the insertion part 371 and the slot 3011, but the other side of the protective net 37 can also abut against the first guide wall 3153 of the volute tongue 315, so that the volute tongue 315 can provide additional support for the protective net 37. In this way, one side of the protective net 37 is inserted into the volute housing 314, thus forming a fixed insertion structure with the volute housing 314, and the other side of the protective net 37 abuts against the volute tongue 315, thus forming a fixed abutment structure with the volute tongue 315. This allows a tight connection and fixation structure to be formed between the protective net 37, the volute housing 314 and the volute tongue 315, which not only gives the protective net 37 good impact resistance after installation, but also improves the structural stability between the volute housing 314 and the volute tongue 315.

[0167] As shown in Figures 24 and 25, in some embodiments, an abutment rib 3151 may be provided on the outer wall of the volute tongue 315. The abutment rib 3151 may have an abutment groove 3012. By providing the abutment rib 3151 on the outer wall of the volute tongue 315, the abutment portion 372 of the protective net 37 can be more accurately aligned and installed. The protrusion of the abutment rib 3151 can also reduce airflow leakage caused by the gap 303 formed by the abutment groove 3012 on the outer wall of the wall, thereby improving the air outlet efficiency.

[0168] As shown in Figure 26, in some embodiments, the air outlet end of the duct housing 31 may be provided with an air outlet 301. A protective net 37 may be provided at the air outlet 301. Furthermore, the duct housing 31 may also be provided with an air supply outlet 3016. The air supply outlet 3016 is located on the side of the air outlet 301 away from the indoor duct 3015. That is, the air supply outlet is located outside the air outlet 301, and the air guide plate 38 is provided on the side of the protective net 37 away from the indoor duct 3015.

[0169] As shown in Figures 1 and 2, in some embodiments, the air conditioner may include an air guide vane 38. The air guide vane 38 may be disposed at the air outlet 3016. The air guide vane 38 is rotatably mounted on the air duct housing 31. By rotating, the air guide vane 38 guides airflow to blow into the room at different angles.

[0170] As shown in Figures 2 and 14, in some embodiments, the indoor fan assembly 3 may include a support frame 4. An air guide plate 38 is rotatably mounted on the support frame 4. The upper and lower ends of the air guide plate 38 can be rotatably connected to the air duct housing 31, respectively. The support frame 4 provides a pivot point for the installation of the air guide plate 38. The support frame 4 further improves the stability of the air guide plate 38 during rotation, allowing the air conditioner to blow air smoothly.

[0171] As shown in Figures 16 and 26, in some embodiments, the support frame 4 can be disposed at the air outlet 301. One end of the support frame 4 can be connected to the second guide wall 3141. The first guide wall 3153 can be provided with a recessed groove 308. The opening of the recessed groove 308 can be oriented towards the air outlet 301. The end of the support frame 4 facing the first guide wall 3153 can be embedded in the recessed groove 308.

[0172] By setting the opening of the clearance groove 308 of the first guide wall 3153 toward the air outlet 301, the support frame 4 can be embedded therein, which can prevent the support frame 4 from protruding from the surface of the first guide wall 3153. This makes the fit between the support frame 4 and the volute tongue 315 more compact, and at the same time reduces the interference with the airflow, allowing the air to flow smoothly along the first guide wall 3153 and the second guide wall 3141, thereby improving the airflow efficiency.

[0173] As shown in Figures 16, 22, and 27, in some embodiments, the support frame 4 may be located on the side of the protective net 37 away from the indoor air duct 3015. A hook 41 may be provided on the side of the support frame 4 near the protective net 37. The hook 41 can extend into the protective net 37 and engage with it to apply a force to the protective net 37 in the direction away from the indoor air duct 3015, causing the protective net 37 to deform in the direction away from the indoor air duct 3015.

[0174] Specifically, the support frame 4 is located at the air outlet 301 and on the side of the protective net 37 away from the indoor air duct 3015, providing a front support point for the protective net 37. The support frame 4 has a hook 41 on the side near the protective net 37, which can extend into and engage with the protective net 37, thereby applying a force to the protective net 37 in a direction away from the indoor air duct 3015. This design allows the support frame 4 to apply a force to the protective net 37 in a direction away from the indoor air duct 3015. On the one hand, the engaging structure between the support frame 4 and the protective net 37 provides additional support and fixation for the protective net 37, enhancing its vibration resistance and reducing vibration or loosening of the protective net 37 due to wind pressure or other external factors. On the other hand, by deforming the protective net 37 toward the side away from the indoor air duct 3015, the protective net 37 can be slightly deformed outward, thereby increasing the interaction force between the protective net 37 and the side of the air duct shell 31 that abuts against it. Combined with the snap-fit ​​structure between the support frame 4 and the front of the protective net 37, the plug-in structure between one side of the protective net 37 and the air duct shell 31, and the abutting structure between the other side of the protective net 37 and the air duct shell 31, the protective net 37 can be more firmly fixed at the air outlet 301 of the air duct shell 31. This facilitates installation and disassembly, and the protective net 37 is not easy to loosen, thus improving the impact resistance of the protective net 37.

[0175] As shown in Figures 26 and 27, in some embodiments, multiple hooks 41 may be provided. Multiple hooks 41 may be located on the same arc or the same arc surface. The arc or arc surface may protrude in an arc shape toward the side away from the indoor air duct 3015. Multiple hooks 41 are respectively engaged with the protective net 37, so that the protective net 37 bends and deforms along the arc or arc surface toward the side away from the indoor air duct 3015.

[0176] It should be noted that the surface of the hook 41 that engages with the protective netting 37 is curved. Multiple hooks 41 engaging with the protective netting 37 can be located on the same curved line or on the same curved surface. Specifically, when multiple hooks 41 are vertically misaligned, they can be located on the same curved surface.

[0177] To improve aesthetics and optimize airflow distribution at the air outlet 301, some air conditioners design the outlet 301 as an arc or irregular shape. Traditional methods of fixing the protective net 37 are difficult to adapt to these shapes and offer poor stability. In this embodiment, the air conditioner uses multiple hooks 41 to engage with the protective net 37. These hooks provide multiple support points for the net 37, resulting in more even stress distribution and preventing stress concentration that could cause it to loosen or deform in certain areas. Furthermore, the multiple hooks 41 are located on the same arc or surface, allowing the net 37 to deform more evenly along the same arc or surface. This allows the net 37 to deform outwards uniformly, naturally adapting to the arc or irregular shape of the outlet 301 during installation, thus improving the overall aesthetics of the air conditioner.

[0178] As shown in Figure 26, the hooks 41 may include two. The two hooks 41 may be symmetrically distributed along the center of the protective net 37.

[0179] As shown in Figure 26, in some embodiments, the air outlet 301 can be arranged on the duct housing 31 along the height direction of the air conditioner. The support frame 4 can be arranged laterally on the duct housing 31. The support frame 4 can be arranged on the duct housing 31 along the width direction of the duct housing 31. The protective net 37 can be provided with a partition groove 3013. The partition groove 3013 can be arranged laterally along the protective net 37. The partition groove 3013 can be arranged along the width direction of the protective net 37. The partition groove 3013 can be arranged in the same direction as the laterally arranged support frame 4. The hook 41 can be engaged with the side edge of the partition groove 3013.

[0180] Specifically, the support frame 4 is arranged laterally along the air outlet 301, and the opposite sides of the length of the protective net 37 can be respectively limited on the air duct shell 31. By extending the spacer slot 3013 laterally along the protective net 37, the support frame 4 can limit the protective net 37 laterally. In this way, the limiting direction of the support frame 4 on the protective net 37 intersects with the limiting direction of the air duct shell 31 on the protective net 37, which can further improve the stability and impact resistance of the protective net 37.

[0181] Since the protective net 37 is located at the air outlet 301, the airflow at the air outlet 301 will exert a certain pressure on the protective net 37. If the fixation is uneven, the protective net 37 may locally lift or loosen, affecting the air supply effect. In this embodiment, by arranging the support frame 4 laterally and extending it laterally in conjunction with the spacer slot 3013, it is beneficial for the front side of the protective net 37 to be evenly stressed laterally, and to make the protective net 37 fit more tightly with the air duct shell 31, thereby improving the overall stability of the indoor fan assembly 3.

[0182] As shown in Figures 26 and 28, in some embodiments, the protective net 37 may include a laterally extending first connecting rod 373. Two first connecting rods 373 may be arranged vertically at intervals to form a spacing groove 3013. A hook 41 may extend into the spacing groove 3013 and engage with the side edge of one of the first connecting rods 373.

[0183] Specifically, the first connecting rod 373 is arranged laterally on the protective net 37, extending along the width of the protective net 37. Two first connecting rods 373 are spaced vertically, forming a gap 3013. This gap 3013 not only serves as a passage for airflow within the indoor duct 3015 through the protective net 37, but also provides embedding space for the hook 41, allowing it to extend into the gap 3013 and engage with the side edge of one of the first connecting rods 373, further improving the stability of the connection.

[0184] As shown in Figures 26 and 27, in some embodiments, the support frame 4 may include a support arm 42. A hook 41 may be provided on the support arm 42. The support arm 42 may extend into the spacer slot 3013, and the hook 41 may engage with the side edge of the rod.

[0185] As shown in Figure 27, in some embodiments, the hook 41 can be positioned upwards. The hook 41 can engage with the side edge of the upper rod. It should be noted that in other embodiments, the hook 41 can also be positioned downwards. The hook 41 can also engage with the side edge of the lower first connecting rod 373.

[0186] As shown in Figures 22 and 29, in some embodiments, multiple slots 3011 may be provided. Multiple slots 3011 may be distributed vertically and alternately on one side of the air outlet 301 on the air duct housing 31. Multiple insertion portions 371 may be provided, and multiple insertion portions 371 may be arranged vertically and alternately on one side of the protective mesh 37, with the insertion portions 371 corresponding to the slots 3011.

[0187] Multiple slots 3011 are arranged at intervals along the vertical direction of the air outlet 301, that is, at intervals along the height direction of the air duct housing 31. Correspondingly, insertion parts 371 are arranged at intervals vertically along the side of the protective net 37 facing the slots 3011 to correspond to the arrangement of the slots 3011. By distributing and correspondingly inserting multiple slots 3011 and multiple insertion parts 371 at intervals vertically, the number of fixing points of the protective net 37 can be increased, thereby dispersing the overall force on the protective net 37, enhancing the overall rigidity of the protective net 37, and reducing the risk of the protective net 37 loosening or deforming due to uneven force. Moreover, it also improves the impact resistance of the protective net 37, so that the protective net 37 installed at the air outlet 301 can remain stable even under strong wind conditions of the cross-flow fan.

[0188] As shown in Figures 22 and 29, in some embodiments, the slot 3011 may be formed by a sidewall recess of the air duct housing 31.

[0189] As shown in Figures 24 and 26, in some embodiments, multiple abutment grooves 3012 may be provided. Multiple abutment grooves 3012 may be distributed vertically and alternately on the air duct housing 31 along the other side of the air outlet 301. Multiple abutment portions 372 may be provided, and these portions may be arranged vertically and alternately along the other side of the protective net 37. The abutment portions 372 may be arranged corresponding to the abutment grooves 3012.

[0190] Among them, multiple abutment grooves 3012 are arranged at intervals along the vertical direction of the air outlet 301, that is, multiple abutment grooves 3012 are arranged at intervals along the height direction of the air duct shell 31. Correspondingly, the abutment part 372 is arranged at intervals along the side of the protective net 37 facing the abutment groove 3012 to correspond to the setting of the slot 3011.

[0191] During long-term use, the protective net 37, secured only by a single abutting part 372 and a single abutting groove 3012, may loosen, shift, or deform due to wind impact, vibration, or temperature changes. By distributing multiple abutting grooves 3012 and multiple abutting parts 372 vertically at intervals and correspondingly abutting them, the support points on the other side of the protective net 37 can be increased, thereby dispersing the overall force on the protective net 37, making the overall force on the protective net 37 more uniform, and reducing the risk of the protective net 37 loosening or deforming. Moreover, it also improves the impact resistance of the protective net 37, allowing the protective net 37 installed at the air outlet 301 to remain stable even under strong winds from the cross-flow fan.

[0192] As shown in Figures 22 and 24, in some embodiments, the abutment groove 3012 and the slot 3011 can be arranged correspondingly on both sides of the air outlet 301. Alternatively, the abutment groove 3012 and the slot 3011 can be arranged in a staggered manner on both sides of the air outlet 301.

[0193] As shown in Figures 26 and 28, in some embodiments, the protective net 37 may include a second connecting rod 374. The second connecting rod 374 may be arranged laterally. The second connecting rod 374 may be arranged along the width direction of the protective net 37. One lateral end of the second connecting rod 374 may be bent to form an abutment portion 372. The other lateral end of the second connecting rod 374 may be bent to form a insertion portion 371.

[0194] Specifically, the abutment portion 372 is formed by bending one end of the second connecting rod 374 laterally, and the insertion portion 371 is formed by bending the other end of the second connecting rod 374 laterally. Thus, the second connecting rod 374 of the protective net 37 adopts a structure with both ends bent, allowing the protective net 37 to form a double-fixed limiting structure between the slot 3011 and the abutment groove 3012, thereby improving the installation stability of the protective net 37 on the air duct housing 31. Furthermore, it facilitates the even distribution of force along the laterally arranged second connecting rod 374 of the protective net 37, making the protective net 37 less prone to deformation during use, thereby reducing air vibration noise.

[0195] As shown in Figure 28, in some embodiments, the abutment portion 372 can be an L-shaped hook formed by bending one end of the second connecting rod 374 laterally. The insertion portion 371 can be an L-shaped hook formed by bending the other end of the second connecting rod 374 laterally.

[0196] As shown in Figure 28, in some embodiments, the protective net 37 may include a plurality of second connecting rods 374. The plurality of second connecting rods 374 may be spaced apart along the height direction of the air conditioner. Specifically, the plurality of second connecting rods 374 being spaced apart along the height direction of the air conditioner also means that the plurality of second connecting rods 374 being spaced apart along the height direction of the air outlet housing. A connecting hole may be formed between the spaced-apart second connecting rods 374, allowing airflow to smoothly flow through the connecting hole to the outside of the air outlet 301.

[0197] As shown in Figure 28, in some embodiments, the protective net 37 may include a third connecting rod 375, which may be located at the top of the protective net 37. The opposite sides of the third connecting rod 375 may be bent downwards to form an abutment portion 372 and an insertion portion 371, respectively.

[0198] Specifically, by bending the opposite sides of the third connecting rod 375 at the top of the protective net 37 downwards to form an abutment portion 372 and a plug portion 371, the opposite sides of the top of the protective net 37 can be fixed to the air duct housing 31 through the abutment portion 372 and the plug portion 371, respectively. Furthermore, bending both ends of the third connecting rod 375 downwards avoids direct contact between the ends of the third connecting rod 375 and the slot 3011 or abutment groove 3012, preventing stress concentration between the plug portion 371 and the abutment portion 372 during connection, thereby improving the overall stability and durability of the protective net 37.

[0199] As shown in Figure 28, in some embodiments, the abutment portion 372 and the insertion portion 371 may also be formed by bending the two sides of the first connecting rod 373 respectively.

[0200] As shown in Figure 28, in some embodiments, the two sides of the first connecting rod 373 can be bent in the same direction to form an abutment portion 372 and an insertion portion 371 with the same opening direction.

[0201] As shown in Figure 28, in some embodiments, the protective net 37 may include a fourth connecting rod 377, which may be located at the bottom end of the protective net 37. The opposite sides of the fourth connecting rod 377 may be bent upwards to form an abutment portion 372 and an insertion portion 371, respectively.

[0202] Specifically, by bending the opposite sides of the fourth connecting rod 377 located at the bottom of the protective net 37 upwards to form an abutment portion 372 and an insertion portion 371, the opposite sides of the top of the protective net 37 can be fixed to the air duct housing 31 through the abutment portion 372 and the insertion portion 371, respectively. Furthermore, bending both ends of the fourth connecting rod 377 upwards avoids direct contact between the ends of the fourth connecting rod 377 and the slot 3011 or abutment groove 3012, preventing stress concentration between the insertion portion 371 and the abutment portion 372 during connection, thereby improving the overall stability and durability of the protective net 37.

[0203] As shown in Figure 17, in some embodiments, the protective net 37 may include a fifth connecting rod 378. The fifth connecting rod 378 may extend along the length of the protective net. The fifth connecting rod 378 and the second connecting rod 374 may intersect to form a mesh structure of the protective net 37, and multiple connecting holes are formed between the fifth connecting rod 378 and the second connecting rod 374, so that airflow can smoothly flow through the connecting holes to the outside of the air outlet 301.

[0204] In some embodiments, multiple fifth connecting rods 378 may be provided. The multiple fifth connecting rods 378 may be arranged at lateral intervals. The multiple fifth connecting rods 378 may intersect with multiple second connecting rods 374 to form multiple communicating holes.

[0205] As shown in Figure 17, in some embodiments, the protective net 37 may include a snap-fit ​​portion 376. Two snap-fit ​​portions 376 may be provided, one at the top and one at the bottom of the protective net 37. Correspondingly, snap-fit ​​grooves 3014 are provided on the upper and lower opposite sides of the air outlet 301, and the snap-fit ​​portions 376 at the top and bottom can be inserted into the snap-fit ​​grooves 3014. Thus, the upper and lower sides and the left and right opposite sides of the protective net 37 can be fixedly positioned with the air duct housing 31.

[0206] The air conditioner disclosed in this embodiment can also be used to solve the problem of universality of the end plates of the outdoor heat exchanger. In the relevant air conditioner, the outdoor heat exchanger includes a first heat exchange section and a second heat exchange section, which need to be spaced apart to accommodate a water pump. The two ends of the first and second heat exchange sections are connected together by end plates. Since the end plates are mainly fixed with screws, the end plates used at both ends of the condenser are not universal, which increases the cost of installation materials and management, and also affects installation efficiency, making rapid installation inconvenient.

[0207] To address the aforementioned issues, as shown in Figure 1, in some embodiments, the air conditioner may include a housing 1. The housing 1 may be configured as the outer casing of the air conditioner.

[0208] As shown in Figure 30, in some embodiments, the air conditioner may include a heat exchanger 2. The heat exchanger 2 may be disposed inside the casing 1. The heat exchanger 2 may exchange heat with indoor air or outdoor air.

[0209] As shown in Figures 2 and 30, in some embodiments, heat exchanger 2 may include an outdoor heat exchanger 22 and an indoor heat exchanger 23. Heat exchanger 2 can function as either the outdoor heat exchanger 22 or the indoor heat exchanger 23. In this embodiment, heat exchanger 2 is the outdoor heat exchanger 22.

[0210] As shown in Figures 30 and 31, in some embodiments, the two opposite ends of the heat exchanger 2 in the lateral direction are a first end 201 and a second end 202, respectively. The heat exchanger 2 may include a first heat exchange section 221. The first heat exchange section 221 may extend from the first end 201 to the second end 202.

[0211] As shown in Figures 30 and 31, in some embodiments, the heat exchanger 2 may include a second heat exchange section 222. The second heat exchange section 222 may extend from the first end 201 to the second end 202. The second heat exchange section 222 may be arranged laterally opposite to the first heat exchange section 221.

[0212] As shown in Figure 30, the first direction A1 is defined by the two opposite ends of the heat exchanger 2 in the lateral direction. The two ends of the heat exchanger 2 in the first direction are the first end 201 and the second end 202, respectively. The second heat exchange section 222 is disposed at intervals on one side of the first heat exchange section 221, and the direction in which the second heat exchange section 222 is disposed at intervals from the first heat exchange section 221 is defined as the second direction A2. The first direction A1 can be perpendicular to the second direction A2.

[0213] Specifically, when the heat exchanger 2 is configured as an indoor heat exchanger, it is vertically installed inside the air conditioner and arranged along the height of the air conditioner. Both the first heat exchange section 221 and the second heat exchange section 222 are vertically installed inside the air conditioner, and the first heat exchange section 221 can be vertically installed on one side of the second heat exchange section 222. The first heat exchange section 221 and the second heat exchange section 222 are arranged along the height of the air conditioner. Furthermore, the lateral arrangement directions of the two ends of the first heat exchange section 221 are the same as those of the two ends of the second heat exchange section 222.

[0214] As shown in Figures 31 and 32, in some embodiments, the heat exchanger 2 may include a first end plate 223. Two first end plates 223 may be provided. The two first end plates 223 may be respectively provided at the ends of corresponding first ends 201 and second ends 202 of the first heat exchange section 221. Specifically, one first end plate 223 is provided on the end of the first end 201 of the first heat exchange section 221, and the other first end plate 223 is provided on the end of the second end 202 of the first heat exchange section 221. The first end plates 223 are used to connect the first heat exchange section 221 and the second heat exchange section 222.

[0215] As shown in Figures 31 and 32, in some embodiments, the heat exchanger 2 may include a second end plate 224. Two second end plates 224 may be provided. The two second end plates 224 may be respectively provided at the ends of the corresponding first ends 201 and second ends 202 of the second heat exchange section 222. Specifically, one second end plate 224 is provided at the end of the first end 201 of the second heat exchange section 222, and the other second end plate 224 is provided at the end of the second end 202 of the first heat exchange section 221. The second end plates 224 are used to connect the first heat exchange section 221 and the second heat exchange section 222.

[0216] As shown in Figures 31 and 32, in some embodiments, the first end plate 223 and the second end plate 224 can be connected at the interval 203 between the first heat exchange section 221 and the second heat exchange section 222. In this way, the first end plate 223 and the second end plate 224 located on both sides of the heat exchanger 2 can utilize the interval 203 between the first heat exchange section 221 and the second heat exchange section 222 as a connection area, avoiding interference between the connecting parts (not shown) and the first heat exchange section 221 and the second heat exchange section 222 respectively.

[0217] As shown in Figures 33 and 34, in some embodiments, the region of the first end plate 223 connected to the second end plate 224 may be provided with a first connecting hole 204 and a first flange hole 205 arranged at intervals. The first flange hole 205 may protrude from the side wall of the first end plate 223 facing the first end 201. Both the first connecting hole 204 and the first flange hole 205 are located in the interval region 203 corresponding to the first heat exchange portion 221 and the second heat exchange portion 222 of the first end plate 223. By protruding the first flange hole 205 from the first end plate 223, a space for accommodating a connector can be formed within the first flange hole 205. In some embodiments, the connector may be a screw, bolt, etc.

[0218] As shown in Figures 35 and 36, in some embodiments, the region of the second end plate 224 connected to the first end plate 223 may be provided with spaced-apart second connecting holes 206 and second flanged holes 207. The second connecting holes 206 and second flanged holes 207 are both located in the spaced region 203 of the second end plate 224 corresponding to the first heat exchange portion 221 and the second heat exchange portion 222. The second flanged hole 207 may protrude from the sidewall of the second end plate 224 facing the second end 202. By protruding the second flanged hole 207 from the second end plate 224, a space for accommodating a connector can be formed within the second flanged hole 207.

[0219] Specifically, as shown in Figures 33 and 34, a first connecting hole 204 and a first flanged hole 205 are provided on the first end plate 223, and a second connecting hole 206 and a second flanged hole 207 are provided on the second end plate 224. When the first connecting hole 204 and the second flanged hole 207 are correspondingly connected, the connector can be inserted into the first connecting hole 204 and the second flanged hole 207, thereby connecting the first end plate 223 and the second end plate 224 together. As shown in Figures 35 and 36, when the second connecting hole 206 and the first flanged hole 205 are correspondingly connected, the connector can be inserted into the second connecting hole 206 and the first flanged hole 205, thereby connecting the first end plate 223 and the second end plate 224 together.

[0220] Furthermore, since the installation direction of the connectors is from the outside to the inside, the installation directions of the connectors at the first end 201 and the second end 202 of the heat exchanger 2 are opposite. The first flanged hole 205 protrudes from the side wall of the first end plate 223 facing the first end 201, and the second flanged hole 207 protrudes from the side wall of the second end plate 224 facing the second end 202. That is, the first flanged hole 205 of the first end plate 223 and the second flanged hole 207 of the second end plate 224 are oriented in different directions. In this way, for the installation at the first end 201, the second flanged hole 207 facing the second end 202 can be connected to the first connecting hole 204, thus providing the correct installation space for the connector. Similarly, for the installation at the second end 202, the first flanged hole 205 facing the first end 201 can be connected to the second connecting hole 206, providing the correct installation space for the connector. This provides a structural basis for the installation of the heat exchanger 2 at its opposite ends.

[0221] As shown in Figure 37, in some embodiments, the distance between the second connecting hole 206 and the second flanged hole 207 can be a second distance L2. The distance between the first connecting hole 204 and the first flanged hole 205 can be a first distance L1. The first distance L1 is different from the second distance L2. At the first end 201, as shown in Figure 33, the first connecting hole 204 and the second flanged hole 207 can be arranged correspondingly and communicate with each other. The first flanged hole 205 can be blocked by the second end plate 224. The second connecting hole 206 can be blocked by the first end plate 223. At the second end 202, as shown in Figure 33, the first flanged hole 205 and the second connecting hole 206 can be arranged correspondingly and communicate with each other. The first connecting hole 204 can be blocked by the second end plate 224. The second flanged hole 207 can be blocked by the first end plate 223.

[0222] By setting the first distance L1 and the second distance L2 to different distances, the first end plate 223 or the second end plate 224 at one end can be misaligned with the corresponding end plate at the other end, thereby achieving the corresponding arrangement and communication between the first connecting hole 204 and the second flange hole 207 at the first end 201, and the corresponding arrangement and communication between the first flange hole 205 and the second connecting hole 206 at the second end 202.

[0223] Specifically, as shown in Figures 33 and 34, when installing the first end 201 of the heat exchanger 2, the first connecting hole 204 and the second flanged hole 207 located at the first end 201 are correspondingly set. Since the first distance L1 and the second distance L2 are set to different distances, the first flanged hole 205 is blocked by the second end plate 224, and the second connecting hole 206 is blocked by the first end plate 223. This can avoid connection errors by the staff during installation and also improve the efficiency of the installation process.

[0224] As shown in Figures 35 and 36, when installing the second end 202 of the heat exchanger 2, the second end plate 224 is offset at the opposite ends of the heat exchanger 2, while the position of the first end plate 223 remains unchanged. This allows the second connecting hole 206 at the second end 202 to correspond with the first flange hole 205. Since the first distance L1 and the second distance L2 are set to different distances, the second flange hole 207 is blocked by the first end plate 223, and the first connecting hole 204 is blocked by the second end plate 224. This avoids connection errors during installation and improves installation efficiency. Furthermore, since the first end plate 223 used for both the first end 201 and the second end 202 is the same, the second end plate 224 is also the same, thus improving the versatility of the end plates used in the heat exchanger 2, reducing production and manufacturing complexity, and eliminating the need to store and manage multiple types of end plates.

[0225] In the heat exchanger 2, two heat exchange sections are typically spaced apart and connected by two end plates. The space created by the spacing is used to install heat dissipation devices. However, because the connection is made using screws or other fasteners, the fasteners need to be installed from the outside in, resulting in different end plates being used at the two ends of the heat exchanger 2.

[0226] In this technical solution, the first end plate 223 used at the first end 201 and the second end 202 of the heat exchanger 2 has the same structure, and the second end plate 224 used at the first end 201 and the second end 202 of the heat exchanger 2 also has the same structure. Both lateral ends of the heat exchanger 2 are connected through the first end plate 223 and the second end plate 224. Specifically, by providing a first connecting hole 204 and a first flange hole 205 on the first end plate 223, and providing a second connecting hole 206 and a second flange hole 207 on the second end plate 224, when the first connecting hole 204 and the second flange hole 207 are correspondingly connected, the connector can be inserted into the first connecting hole 204 and the second flange hole 207, thereby connecting the first end plate 223 and the second end plate 224 of one end of the heat exchanger 2 together. When the second connecting hole 206 is connected to the first flange hole 205, the connector can be inserted into the second connecting hole 206 and the first flange hole 205, thereby connecting the first end plate 223 and the second end plate 224 at the other end of the heat exchanger 2 together.

[0227] Furthermore, by setting the first distance L1 and the second distance L2 to different distances, when connecting the first heat exchange section 221 and the second heat exchange section 222 at opposite ends of the heat exchanger 2, the first end plate 223 or the second end plate 224 on one side can be staggered so that the corresponding connecting holes and flange holes are connected. This allows the two ends of the heat exchanger 2 to be connected and fixed using the same first end plate 223 and second end plate 224 respectively. Moreover, since the first distance L1 and the second distance L2 are set to different distances, when one hole of the first end plate 223 and one hole of the second end plate 224 are connected, the other hole of the first end plate 223 and the other hole of the second end plate 224 can be blocked. Thus, when a water jet 51 is provided at the interval between the first heat exchange section 221 and the second heat exchange section 222, the water jet 51 will not splash directly to the outside through the hole without a connecting member.

[0228] The technical solution of this disclosure can avoid the need to use end plates with different structures at both ends of the heat exchanger 2 in the traditional design. Using the same first end plate 223 and second end plate 224 at both ends of the heat exchanger 2 can not only make the end plate installation of the heat exchanger 2 more standardized, but also reduce the complexity of manufacturers having to manage multiple materials in the production process, simplify material procurement and production process, save manpower management time, and improve the efficiency of installation and production.

[0229] As shown in Figure 37, in some embodiments, the first connecting hole 204 and the first flange hole 205 can be arranged vertically at intervals along the height direction A3 of the first end plate 223. The second connecting hole 206 and the second flange hole 207 can be arranged vertically at intervals along the height direction A3 of the second end plate 224.

[0230] It should be noted that the height of the first end plate 223 and the height of the second end plate 224 can correspond to the height of the air conditioner. As shown in Figures 5 and 7, by providing a first connecting hole 204 and a first flange hole 205 at intervals on the height direction A3 of the first end plate 223, and providing a second connecting hole 206 and a second flange hole 207 at intervals on the height direction of the second end plate 224, the height direction of the heat exchanger 2 can be fully utilized. By offsetting the first end plate 223 of the first end 201 with the first end plate 223 of the second end 202, or offsetting the second end plate 224 of the first end 201 with the second end plate 224 of the second end 202, the first connecting hole 204 and the second flange hole 207 at one end are arranged and connected, and the second connecting hole 206 and the first flange hole 205 at the other end are arranged and connected, so that the first heat exchange part 221 and the second heat exchange part 222 are fixed at both ends using the same first end plate 223 and second end plate 224.

[0231] On the other hand, given the limited internal space of the air conditioner, the vertically spaced connection holes and flange holes can make more effective use of the height space of the heat exchanger 2, making the heat exchanger 2 more compact and efficient.

[0232] As shown in Figures 38 and 39, in some embodiments, the first connecting hole 204 and the first flange hole 205 may be disposed at the upper end of the first end plate 223. The second connecting hole 206 and the second flange hole 207 may be disposed at the upper end of the second end plate 224.

[0233] As shown in Figure 38, in some embodiments, two of each of the first connecting hole 204 and the first flange hole 205 may be provided. One set of the first connecting hole 204 and the first flange hole 205 may be provided near the upper end of the first end plate 223. The other set of the first connecting hole 204 and the first flange hole 205 may be provided near the lower end of the first end plate 223.

[0234] As shown in Figures 40 and 41, in some embodiments, two sets of the second connecting hole 206 and the second flange hole 207 may be provided. One set of the second connecting hole 206 and the second flange hole 207 may be located near the upper end of the second end plate 224. The other set of the second connecting hole 206 and the second flange hole 207 may be located near the lower end of the second end plate 224.

[0235] In this way, by setting two sets of first connecting holes 204 and first flange holes 205, and two sets of second connecting holes 206 and second flange holes 207, the connection stability between the first heat exchanger 221 and the second heat exchanger 222 can be improved.

[0236] In some other embodiments, the first connecting hole 204 and the first flange hole 205 may be arranged at intervals along the width direction of the first end plate 223. The second connecting hole 206 and the second flange hole 207 may be arranged vertically at intervals along the width direction of the second end plate 224. It should be noted that the width direction of the first end plate 223 and the width direction of the second end plate 224 may refer to the second direction respectively.

[0237] As shown in Figures 31 and 32, in some embodiments, the two first end plates 223 may be located at the same height at both ends of the first heat exchange section 221. The two second end plates 224 may be located at different heights at both ends of the first heat exchange section 221, and the two second end plates 224 are staggered in the height direction.

[0238] Since the first end plate 223 is provided with a first connecting hole 204 and a first flange hole 205 at intervals in the height direction, and the second end plate 224 is provided with a second connecting hole 206 and a second flange hole 207 at intervals in the height direction, during the installation process, by using the first end plate 223 at one end to be staggered vertically relative to the first end plate 223 at the other end, or by using the second end plate 224 at one end to be staggered vertically relative to the second end plate 224 at the other end, the two ends of the heat exchanger 2 can be fixed by using connectors.

[0239] In this embodiment, the first end plate 223 is positioned at the same height at both ends of the first heat exchange section 221, meaning the positions of the first end plate 223 at opposite ends of the first heat exchange section 221 are identical. Only the two second end plates 224 are positioned at different heights at both ends of the first heat exchange section 221. This allows the operator to easily connect the corresponding flanged holes and connecting holes by simply changing the installation position of one end plate during installation. This simplifies the installation process of the heat exchanger 2 and improves installation and production efficiency.

[0240] As shown in Figures 31 and 32, in some embodiments, the heights of the first heat exchange section 221 and the second heat exchange section 222 can be the same. The height of the first end plate 223 can be designed to be the same as the height of the first heat exchange section 221, and the height of the second end plate 224 can be designed to be less than the height of the second heat exchange section 222. This not only facilitates the installation of the first end plate 223, but also ensures that when the second end plate 224 is installed in a staggered manner in the height direction, its upper and lower ends will not exceed the upper and lower ends of the second heat exchange section 222, thus preventing the second end plate 224 from occupying space in the height direction of the air conditioner due to its staggered installation and maintaining the compact structure of the heat exchanger 2.

[0241] In some other embodiments, the two second end plates 224 may also be located at the same height at both ends of the first heat exchange section 221. The two first end plates 223 may also be located at different heights at both ends of the first heat exchange section 221, with the two first end plates 223 staggered in the height direction.

[0242] As shown in Figures 32 and 37, in some embodiments, the difference between the misalignment distance of the two second end plates 224 in the height direction and the difference between the first distance L1 and the second distance L2 can be the same.

[0243] In this way, during the installation process, the offset distance of the two second end plates 224 in the height direction is the same as the difference between the first distance L1 and the second distance L2. When the first end plate 223 of one end is offset vertically relative to the first end plate 223 of the other end according to the difference between the first distance L1 and the second distance L2, or when the second end plate 224 of one end is offset vertically relative to the second end plate 224 of the other end according to the difference between the first distance L1 and the second distance L2, the first connecting hole 204 and the second flange hole 207 of one end can be arranged and connected accordingly, and the first flange hole 205 and the second connecting hole 206 of the other end can be arranged and connected accordingly. At the same time, the hole that does not pass through the connector can be blocked by the other end plate.

[0244] As shown in Figures 33 and 34, in some embodiments, the first heat exchange section 221 may include a plurality of laterally extending first heat dissipation pipes 2211. As shown in Figure 37, the plurality of first heat dissipation pipes 2211 may be arranged sequentially at intervals along the height direction according to a first spacing L3. The plurality of first heat dissipation pipes 2211 can improve the heat exchange efficiency between the first heat exchange section 221 and the airflow.

[0245] As shown in Figures 38 and 39, in some embodiments, the first end plate 223 may be provided with a plurality of first through holes 209. The plurality of first through holes 209 may be spaced apart along the height direction of the first end plate 223. A plurality of first heat dissipation pipes 2211 may be correspondingly inserted into the first through holes 209, thereby improving the connection stability between the first end plate 223 and the first heat exchange part 221.

[0246] It should be noted that, as shown in Figure 37, the spacing between the first heat pipes 2211 can be considered as the spacing between the first through holes 209, and the spacing between the second heat pipes 2221 can be considered as the spacing between the second through holes 210. For ease of understanding, the first spacing is represented by the spacing L3 between the first through holes 209, and the second spacing is represented by the spacing L4 between the second through holes 210.

[0247] As shown in Figures 33 and 34, in some embodiments, the second heat exchange section 222 may include a plurality of laterally extending second heat dissipation pipes 2221. As shown in Figure 37, the plurality of second heat dissipation pipes 2221 may be arranged sequentially at intervals along the height direction according to a second spacing L4. The plurality of second heat dissipation pipes 2221 can improve the heat exchange efficiency between the second heat exchange section 222 and the airflow.

[0248] As shown in Figure 40, in some embodiments, the second end plate 224 may be provided with a plurality of second through holes 210. The plurality of second through holes 210 may be spaced apart along the height direction of the second end plate 224. A plurality of second heat dissipation pipes 2221 may be correspondingly inserted into the second through holes 210, thereby improving the connection stability between the second end plate 224 and the second heat exchange section 222.

[0249] As shown in Figures 31, 32, and 37, in some embodiments, the difference between the first distance L1 and the second distance L2 can be the same as the first spacing L3. Thus, when the operator installs the first end plate 223 and the second end plate 224 at the other end of the heat exchanger 2, it is only necessary to offset the first end plate 223 from the first end plate 223 at the same height by the installation position of a heat dissipation pipe. This further simplifies the installation process and improves installation efficiency.

[0250] As shown in Figure 37, in some embodiments, the difference between the first distance L1 and the second distance L2 can be the same as the second spacing L4. Thus, when the operator installs the first end plate 223 and the second end plate 224 at the other end of the heat exchanger 2, it is only necessary to offset the second end plate 224 from the second end plate 224 at the same height position as the installation position of a heat dissipation pipe. This further simplifies the installation process and improves installation efficiency.

[0251] As shown in Figures 34 and 38, in some embodiments, one of the first end plate 223 and the second end plate 224 may be provided with a slot 208. The other of the first end plate 223 and the second end plate 224 may be provided with a hook portion 2241. The hook portion 2241 can engage with the slot 208.

[0252] The first end plate 223 and the second end plate 224 can be pre-fixed through the cooperation of the slot 208 and the hook portion 2241. During installation, the slot 208 and the hook portion 2241 are engaged, allowing the first end plate 223 and the second end plate 224 to be pre-connected before the connector is driven in, which improves installation efficiency and facilitates operation. On the other hand, the first end plate 223 and the second end plate 224 are not only fixed by the connector, but can also be fixed by the slot 208 and the hook portion 2241, further improving the stable connection between the first end plate 223 and the second end plate 224.

[0253] As shown in Figure 38, in some embodiments, a slot 208 may be provided on the side of the first end plate 223 facing the second heat exchange section 222. A hook portion 2241 may be provided on the side wall of the second end plate 224 facing the first end 201.

[0254] Specifically, at the first end 201 of the heat exchanger 2, the side wall of the second end plate 224 facing the first end 201 is provided with a hook portion 2241. When the hook portion 2241 is engaged in the slot 208, the first end plate 223 can be clamped between the hook portion 2241 and the second end plate 224, improving the connection stability of the first end plate 223 and the second end plate 224 at the first end 201. At the second end 202 of the heat exchanger 2, when the hook portion 2241 is engaged in the slot 208, the first end plate 223 can also be clamped between the hook portion 2241 and the second end plate 224, thus improving the connection stability of the first end plate 223 and the second end plate 224 at the second end 202.

[0255] As shown in Figure 38, in some embodiments, the slot 208 may include a first slot 2081 and a second slot 2082. The first slot 2081 and the second slot 2082 may be arranged at intervals along the height direction on the first end plate 223. The height difference between the first slot 2081 and the second slot 2082 may be the same as the difference between a first distance L1 and a second distance L2. As shown in Figure 6, at the first end 201, the hook portion 2241 may engage with the first slot 2081. As shown in Figure 36, at the second end 202, the hook portion 2241 may engage with the second slot 2082.

[0256] Specifically, by making the height difference between the first slot 2081 and the second slot 2082 the same as the difference between the first distance L1 and the second distance L2, the hook portion 2241 can be engaged with the corresponding slot 208 at different heights. Specifically, when the second end plate 224 is set with a staggered height between the first end 201 and the second end 202, the hook portion 2241 at the first end 201 can engage with the first slot 2081, and the hook portion 2241 at the second end 202 can engage with the second slot 2082, thereby improving the installation flexibility and adaptability of the first end plate 223 and the second end plate 224.

[0257] In some other embodiments, the first end plate 223 has a slot 208 on the side facing the second heat exchange section 222, which can extend along the height direction. This also allows the hook portion 2241 to have a corresponding slot 208 for engagement at different heights when the height positions of the two ends of the second end plate 224 are staggered.

[0258] As shown in Figures 34 and 39, in some embodiments, the sidewall of the first end plate 223 facing the first end 201 may have a protruding first flange portion 2231. The first flange portion 2231 may be annular. A first flange hole 205 may be formed within the annular first flange portion 2231. The first flange hole 205 may be a threaded hole. The protruding first flange portion 2231 with a threaded hole inside allows the first flange hole 205 to form a connection space for the connector.

[0259] As shown in Figures 36 and 40, in some embodiments, the second end plate 224 has a second flange 2242 protruding from the sidewall facing the second end 202. The second flange 2242 is annular, and a second flange hole 207 is formed within the annular second flange 2242. The second flange hole 207 is a threaded hole. The protruding second flange 2242 with a threaded hole inside allows the second flange hole 207 to form a connection space for the connector.

[0260] Specifically, since all connecting parts need to be installed from the outside in, the directions of the connecting holes at the first end 201 and the second end 202 are opposite. By providing a first flange 2231 protruding from the sidewall of the first end plate 223 toward the first end 201, and a second flange 2242 protruding from the sidewall of the second end 224 toward the second end 202, at the first end 201 of the heat exchanger 2, the connecting parts can be sequentially inserted into the first connecting hole 204 and the second flange hole 207, and at the second end 202 of the heat exchanger 2, the connecting parts can be sequentially inserted into the first flange hole 205 and the second connecting hole 206. This allows the same first end plate 223 to be used at both the first end 201 and the second end 202 of the heat exchanger 2, and the same second end plate 224 to be used at both the first end 201 and the second end 202 of the heat exchanger 2.

[0261] As shown in Figures 34 and 38, in some embodiments, the sidewall of the first end plate 223 facing the first end 201 may be provided with a first mark 2232. The first mark 2232 and the first connecting hole 204 may be arranged adjacent to each other. The first mark 2232 can be used to indicate the connection position of the connector connecting the first end plate 223 and the second end plate 224.

[0262] Specifically, on the first end 201, the first end plate 223 is located outside the second end plate 224, that is, the first end plate 223 is located on the side of the second end plate 224 facing the first end 201. During the installation of the first heat exchange section 221 and the second heat exchange section 222 of the first end 201, the first end plate 223 is positioned facing the operator. By providing a first mark 2232 on the side wall of the first end plate 223 facing the first end 201, and by having the first mark 2232 adjacent to the first connecting hole 204, the installer can quickly and accurately locate the connection position during installation on one side of the first end 201, and then sequentially pass the connectors through the first connecting hole 204 and the second flange hole 207, achieving rapid installation of the first end 201 of the heat exchanger 2. Furthermore, during installation, the installer can use the first mark 2232 to confirm the placement and orientation of the connectors (such as screws, bolts, etc.), thereby avoiding incorrect or missing connections, and greatly improving installation efficiency and accuracy.

[0263] As shown in Figures 34 and 38, in some embodiments, the sidewall of the first end plate 223 facing the first end 201 may be provided with a third mark 2233. The third mark 2233 may be used to indicate the location where the connector cannot be installed.

[0264] In some embodiments, the third mark 2233 can be an "×" mark. It should be noted that the third mark 2233 can be other prohibited marks, thereby reminding installers not to install connectors in the corresponding holes.

[0265] As shown in Figures 36 and 40, in some embodiments, the sidewall of the second end plate 224 facing the second end 202 may be provided with a second mark 2243. The second mark 2243 may be disposed adjacent to the second flange hole 207. The second mark 2243 may be used to indicate the connection position of the connector connecting the first end plate 223 and the second end plate 224.

[0266] Specifically, on the second end 202, the second end plate 224 is located outside the first end plate 223, that is, the second end plate 224 is located on the side of the first end plate 223 facing the second end 202. During the installation of the first heat exchange section 221 and the second heat exchange section 222 of the second end 202, the second end plate 224 is positioned facing the operator. By providing a second mark 2243 on the side wall of the second end plate 224 facing the second end 202, and by having the second mark 2243 adjacent to the second flange hole 207, the installer can quickly and accurately locate the connection position during installation on one side of the second end 202, and then sequentially pass the connector through the second connection hole 206 and the first flange hole 205, achieving rapid installation of the second end 202 of the heat exchanger 2. Furthermore, during installation, the installer can use the second mark 2243 to confirm the placement and orientation of the connectors (such as screws, bolts, etc.), thereby avoiding incorrect or missing connections, greatly improving installation efficiency and accuracy.

[0267] As shown in Figures 36 and 30, in some embodiments, the sidewall of the second end plate 224 facing the second end 202 may be provided with a fourth mark 2244. The fourth mark 2244 may be disposed adjacent to the second flange hole 207. The fourth mark 2244 may be used to indicate the location where a connector cannot be installed.

[0268] Specifically, on the second end 202 of the heat exchanger 2, a second flange 2242 is provided protruding from the side wall of the second end plate 224 facing the second end 202. During the installation of the second end 202 of the heat exchanger 2, the connector cannot pass through the second flange hole 207. Therefore, by providing a fourth mark 2244 at a position adjacent to the second flange hole 207, the installer can be alerted to avoid incorrect installation, thus improving installation accuracy and efficiency.

[0269] In some embodiments, the fourth mark 2244 can be an "×" mark. It should be noted that the fourth mark 2244 can be other prohibited marks, thereby reminding installers not to install connectors in the corresponding holes.

[0270] As shown in Figures 42 and 43, in some embodiments, the air conditioner may include a second drip tray 5. The second drip tray 5 may have a drip trough 50. A first heat exchanger 221 and a second heat exchanger 222 are installed in the second drip tray 5 and positioned above the drip trough 50. The second drip tray 5 can be used to collect condensate from the air conditioner. When the heat exchanger 2 is configured as a condenser, positioning the first heat exchanger 221 and the second heat exchanger 222 above the drip trough 50 facilitates cooling of the heat exchanger 2.

[0271] As shown in Figures 42 and 43, in some embodiments, the second water receiving tray 5 may have a water-pumping wheel 51, which is rotatably disposed within the water receiving trough 50. The water-pumping wheel 51 may be located within the interval 203 between the first heat exchange section 221 and the second heat exchange section 222. The second water receiving tray 5 may be equipped with a water-pumping motor 52. The water-pumping motor 52 may be disposed outside the water receiving trough 50. The water-pumping motor 52 and the water-pumping wheel 51 may be connected in a transmission connection to drive the water-pumping wheel 51 to rotate.

[0272] Specifically, the interval 203 between the first heat exchange section 221 and the second heat exchange section 222 forms a water flow channel, and the water jet 51 is correspondingly disposed at the lower end of the interval 203. In the cooling mode of the air conditioner, when the heat exchanger 3 acts as an outdoor heat exchanger, by placing the second water receiving tray 5 below the first heat exchange section 221 and the second heat exchange section 222, condensate will be generated on the surface of the heat exchanger during the heat exchange process. The condensate will flow to the second water receiving tray 5 under the influence of gravity. By setting the water jet 51 and the water jet motor 52 on the second water receiving tray 5, and by driving the water jet 51 to rotate, the rotation of the water jet 51 can splash up the condensate in the water jet 51, thereby cooling the surface of the heat exchanger. This achieves self-treatment of the water in the water receiving tank 50 and also improves the heat exchange efficiency of the outdoor heat exchanger.

[0273] Those skilled in the art will understand that the scope of this disclosure is not limited to the specific embodiments described above, and that modifications and substitutions can be made to certain elements of the embodiments without departing from the spirit of this disclosure. The scope of this disclosure is limited by the appended claims.

Claims

1. An air conditioner, comprising: The housing, which is configured to form the outer casing of the air conditioner; The casing has a storage space; An indoor heat exchanger is disposed in the accommodating space and is used to exchange heat with indoor air. An indoor fan assembly is located in the accommodating space and is arranged opposite to the indoor heat exchanger; The indoor fan assembly includes: The air duct housing is disposed within the housing; An indoor fan is rotatably disposed within the air duct housing, and the indoor fan is arranged along the height direction of the air conditioner; a lower end cover is provided at the lower end of the indoor fan; An indoor motor is located at the bottom of the air duct housing; the top of the indoor motor is provided with an output shaft and a shaft hole, the output shaft extends upward through the shaft hole and extends into the air duct housing to drive the lower end cover. A shielding component is sleeved on the output shaft. The shielding component is arranged circumferentially around the outer periphery of the output shaft and shields the area above the shaft hole. The bottom surface of the lower end cover has an upwardly recessed mounting space, and the shielding member is located within the mounting space.

2. The air conditioner according to claim 1, wherein the lower end cover comprises: A base plate is provided at the lower end of the indoor fan wheel, and the base plate has an opening; A boss is provided at the opening of the base plate, and the boss extends upward from the opening of the base plate, forming the installation space inside the boss, which is connected to the opening; the top wall of the boss is located above the opening, and the indoor motor extends into the installation space and is connected to the top wall of the boss for transmission.

3. The air conditioner according to claim 2, wherein the peripheral sidewall of the boss bends upward from the opening of the base plate and connects between the base plate and the top wall of the boss; In the top-to-bottom direction, the peripheral sidewall of the boss is inclined toward the axis away from the output shaft.

4. The air conditioner according to claim 2 or 3, wherein the shielding member comprises: A shielding cover is fitted onto the output shaft. The shielding cover is annular and surrounds the outer periphery of the output shaft. The shielding cover is positioned above the shaft hole. The flow guide is annular, circumferentially surrounding the outer periphery of the cover and extending downward along the circumferential edge of the cover.

5. The air conditioner according to claim 4, wherein the top surface of the air guide is provided with an air guide surface, and in the direction from top to bottom, the air guide surface is inclined toward the axis away from the output shaft.

6. The air conditioner according to any one of claims 1-5, wherein the bottom wall of the air duct housing is provided with an installation port; The indoor fan assembly also includes a sealing sleeve, which is fitted over the top of the indoor motor and over the outside of the output shaft. The sealing sleeve abuts against the bottom wall of the duct housing and the top of the indoor motor to seal the gap between the mounting port and the indoor motor.

7. The air conditioner according to claim 6, wherein the sealing sleeve is provided with a first enclosure portion protruding on the side facing the shielding member, and the first enclosure portion is arranged around the periphery of the output shaft; The shielding element covers the top of the first enclosure.

8. The air conditioner according to claim 6 or 7, wherein the bottom wall of the air duct housing is further provided with a second enclosure portion, the second enclosure portion being provided around the peripheral edge of the mounting opening and protruding downward relative to the bottom wall of the air duct housing; The top of the sealing sleeve is provided with a sealing part, and the lower end of the sealing part is installed on the inner side of the second enclosure part to seal the gap between the second enclosure part and the mounting opening.

9. The air conditioner according to any one of claims 1-8, wherein the bottom wall of the air duct housing is further provided with a surrounding plate, the surrounding plate being provided to protrude downward from the bottom wall of the air duct housing, and the surrounding plate being arranged around the periphery of the motor.

10. The air conditioner according to claim 9, wherein the indoor fan assembly further includes a water receiving tray, the water receiving tray being disposed below the air duct housing, the bottom wall of the water receiving tray having an upwardly protruding mounting ring and an isolation ring, the isolation ring being spaced apart on the circumferential outer side of the mounting ring; The indoor motor is mounted on the mounting ring; The enclosure is located above the isolation ring and outside the isolation ring.

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