Air conditioner

Abstract

The utility model provides an air conditioner which comprises an indoor fan assembly, the indoor fan assembly comprises a volute and a volute tongue, an indoor air duct is arranged in the volute, and the volute is provided with an air outlet; the volute tongue is arranged in the volute and close to one side of the air outlet, the volute tongue comprises a windward wall and a first flow guide wall, the first flow guide wall is arranged towards the air outlet, and one side of the first flow guide wall is connected with the side, close to the air outlet, of the windward wall; the volute comprises a second flow guide wall, the second flow guide wall is arranged on one side of the air outlet, and the second flow guide wall is connected with the side, away from the windward wall, of the first flow guide wall. A step groove is formed in the side, facing the second flow guide wall, of the first flow guide wall, and the first flow guide wall is provided with a blocking rib which is arranged on the side, close to the air outlet, of the step groove. A limiting rib is arranged on the side, close to the first flow guide wall, of the second flow guide wall, and the blocking rib is clamped to the side, close to the air outlet, of the limiting rib and shields the side, close to the air outlet, of a gap between the limiting rib and the first flow guide wall.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration electrical technology, and mainly to an air conditioner. Background Technology

[0002] 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.

[0003] An air conditioner typically consists of major components such as a compressor, condenser, evaporator, expansion valve, cross-flow fan, and air outlet duct. The compressor drives the refrigerant circulation, the condenser and evaporator release and absorb heat respectively, the expansion valve regulates the refrigerant flow, and the cross-flow fan in the air outlet duct accelerates airflow to enhance heat exchange efficiency.

[0004] The volute tongue is usually located at the air outlet of the volute shell. However, the connection between the volute tongue and the volute shell is often prone to gaps due to the snap-fit ​​structure. This can cause airflow in the indoor duct to leak through the connection between the volute tongue and the volute shell, which can lead to condensation on the volute tongue or affect the efficiency of gas flow. Utility Model Content

[0005] The purpose of this invention is to provide an air conditioner that reduces the risk of airflow leakage through the gap between the duct tongues in the duct.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] According to one aspect of the present invention, an air conditioner is provided, including a housing configured as the outer shell of the air conditioner; an indoor heat exchanger disposed within the housing for exchanging heat with indoor air; and an indoor fan assembly disposed within the housing and arranged adjacent to the indoor heat exchanger. The indoor fan assembly includes: a volute disposed within the housing, the volute having an indoor air duct and an air outlet; and a volute tongue disposed within the volute and arranged near the air outlet, the volute tongue including: a windward wall facing the indoor air duct; and a first guide wall facing the air outlet, one side of the first guide wall being connected to the side of the windward wall near the air outlet. The volute includes a second guide wall disposed on one side of the air outlet, and the second guide wall is connected to the side of the first guide wall away from the windward wall. The first guide wall has a stepped groove on the side facing the second guide wall, and a baffle rib is provided on the side of the stepped groove near the air outlet. The second guide wall has a limiting rib on the side near the first guide wall, the limiting rib is engaged in the stepped groove, and the baffle rib is engaged on the side of the limiting rib near the air outlet. The baffle rib covers at least a portion of the gap between the limiting rib and the first guide wall on the side near the air outlet.

[0008] The above technical solution has the following advantages or beneficial effects: By providing a stepped groove at the connection point of the volute tongue near the air outlet, and providing a limiting rib on the second guide wall of the volute housing, the limiting rib is engaged in the stepped groove, thereby ensuring a tight fit between the volute tongue and the volute housing near the air outlet, reducing the gap between the volute tongue and the volute housing. Furthermore, by providing a baffle rib on the side of the first guide wall facing the air outlet, located within the stepped groove, the baffle rib blocks the gap between the limiting rib and the first guide wall near the air outlet. This ensures that the volute tongue not only fits tightly onto the volute housing but also blocks the gap between the limiting rib and the first guide wall, thus preventing air leakage at the connection point and improving the sealing performance of the duct housing formed by the volute tongue and the volute housing.

[0009] In some embodiments of this application, an air conditioner is provided, wherein the limiting rib has a groove on the side facing the air outlet, and the baffle rib abuts in the groove.

[0010] Another technical solution described above has the following advantages or beneficial effects: By setting a groove on the side of the limiting rib facing the air outlet and placing the baffle rib against the groove, the cooperation between the baffle rib and the groove allows the first guide wall and the second guide wall to form a tight contact during assembly. The protruding rib can be embedded in the groove to form a snap-fit ​​structure, and the tight contact between the two can further reduce the gap between the first guide wall and the second guide wall. Moreover, the cooperation between the groove and the baffle rib can increase the contact area of ​​the sealing surface between the limiting rib and the second guide wall. Compared with the groove and the limiting rib having only a flat contact surface, the structure with a groove on the side of the limiting rib facing the air outlet provides more contact points at the joint between the baffle rib and the limiting rib, thereby enhancing the shielding effect on the gap, effectively reducing the risk of airflow leakage from the connection between the volute tongue and the volute shell, and improving the sealing reliability after the volute tongue and the volute shell are assembled.

[0011] In some embodiments of this application, an air conditioner is provided, wherein the volute includes a limiting wall, the limiting wall being disposed on the side of the first guide wall away from the windward wall; the stepped groove is formed between the side of the limiting wall near the air outlet and the end of the first guide wall facing the air outlet; and the second guide wall abuts against the side of the limiting wall facing the air outlet.

[0012] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: by providing a limiting wall on the side of the first guide wall away from the windward wall, and the limiting wall is used to define a stepped groove with the first guide wall, the contact area between the second guide wall and the volute tongue can be increased. When the limiting rib is inserted into the stepped groove, the second guide wall also abuts against the limiting wall, thereby increasing the contact area between the second guide wall and the first guide wall, and thus increasing the shielding effect on the gap at the connection between the volute tongue and the volute shell.

[0013] In some embodiments of this application, an air conditioner is provided, wherein the second guide wall is arranged along the height direction of the air conditioner, the upper end of the second guide wall is provided with a first notch on the side near the first guide wall, and the lower end of the second guide wall is provided with a second notch on the side near the first guide wall; the portion of the second guide wall located between the first notch and the second notch forms an elastic connection portion, and the limiting rib is provided on the end of the elastic connection portion near the first guide wall.

[0014] Another technical solution described above has the following advantages or beneficial effects: Since the portion of the second guide wall located between the first and second notches can serve as a suspended end, the second guide wall possesses a certain degree of deformation capability. During the engagement process between the second and first guide walls, the second guide wall can undergo a certain elastic deformation, allowing the limiting rib to engage more smoothly in the stepped groove. Furthermore, the elastic connection formed between the first and second notches can accommodate the assembly tolerances between the volute tongue and the volute casing, improving assembly convenience.

[0015] In some embodiments of this application, an air conditioner is provided in which the second air guide wall is provided with a third notch located between the first notch and the second notch, so as to divide the elastic connecting part into two elastic connecting units.

[0016] Another technical solution described above has the following advantages or beneficial effects: By adding a third notch to the second guide wall, the third notch divides the elastic connection into two independent connection units, allowing each connection unit to have a certain deformation capacity. In this way, the two independent elastic units can be fine-tuned separately. During the engagement of the second guide wall and the first guide wall, the two independent elastic units can be deformed and adjusted independently, improving the success rate of assembly and reducing plastic deformation or material damage caused by excessive deformation. Furthermore, it can avoid stress concentration problems in the second guide wall, which is far from the upper and lower ends, during the engagement process.

[0017] In some embodiments of this application, an air conditioner is provided, wherein the volute is arranged along the height direction of the air conditioner, and the volute tongue is arranged within the volute along the height direction of the air conditioner; a first mounting portion is formed at the upper end of the volute tongue, and a first sliding groove is recessed at the upper end of the volute, the first sliding groove having a first open end, the first open end being disposed facing the outside of the volute; the first mounting portion can be inserted and installed into the first sliding groove through the first open end.

[0018] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: By having a first groove recessed at the upper end of the volute, the first mounting part formed at the upper end of the volute tongue can be inserted into the first groove. When the first mounting part is inserted into place, the volute tongue can fit tightly against the upper end of the volute, and the upper end of the volute tongue can form a tightly connected structure with the upper end of the volute, thereby reducing the gap between the volute tongue and the volute at the upper end connection and preventing air leakage in the indoor air duct through the upper end connection of the two.

[0019] In some embodiments of this application, an air conditioner is provided, wherein the first mounting part is provided with a first buckle facing the first slide groove, and the first slide groove is provided with a first snap-fit ​​hole; when the first mounting part is installed in place with the first slide groove, the first buckle is snapped into the first snap-fit ​​hole.

[0020] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: by setting a first buckle in the first mounting part facing the first slide groove, and the first slide groove is provided with a first snap-fit ​​hole, after the first mounting part slides into the first slide groove, the first buckle automatically snaps into the first snap-fit ​​hole, thereby fixing the upper end of the volute tongue to the upper end of the volute shell, and thus providing additional mechanical locking force for the volute tongue to slide into the first slide groove, so that the volute tongue is stable and does not shake.

[0021] In some embodiments of this application, an air conditioner is provided, wherein the volute is arranged along the height direction of the air conditioner, and the volute tongue is arranged inside the volute along the height direction of the air conditioner; a second mounting portion is formed at the lower end of the volute tongue, and a second sliding groove is recessed at the lower end of the volute, the second sliding groove having a second open end, the second open end being disposed facing the outside of the volute; the second mounting portion can be inserted and installed in the second sliding groove through the second open end.

[0022] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: By having a second groove recessed at the lower end of the volute, the second mounting part formed at the lower end of the volute tongue can be inserted into the second groove. When the second mounting part is inserted into place, the volute tongue can fit tightly against the volute at the lower end of the volute, and the lower end of the volute tongue can form a tightly connected structure with the lower end of the volute, thereby reducing the gap between the volute tongue and the volute at the lower end connection and preventing air leakage in the indoor air duct through the connection at the upper end of the two.

[0023] In some embodiments of this application, an air conditioner is provided, wherein the indoor fan assembly further includes a support frame, the support frame is disposed at the air outlet, one end of the support frame is connected to the second guide wall; the first guide wall is provided with a clearance groove, the opening of the clearance groove is disposed facing the air outlet, and the end of the support frame facing the first guide wall is embedded in the clearance groove.

[0024] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: by setting the opening of the clearance groove of the first guide wall towards the air outlet, the support frame can be embedded therein, which can prevent the support frame from protruding from the surface of the first guide wall, making the fit between the support frame and the volute tongue more compact, and at the same time reducing the interference to the airflow, so that the air can flow smoothly along the first guide wall and the second guide wall, thereby improving the airflow efficiency.

[0025] In some embodiments of this application, an air conditioner is provided, wherein the indoor fan assembly further includes a protective net, the protective net being disposed at the air outlet, and the volute tongue having an abutment groove on the side facing the protective net; the protective net having an abutment portion on the side facing the first guide wall, the abutment portion being aligned and abutting against the abutment groove, so that one side of the protective net is fixed on the volute tongue.

[0026] Another technical solution described above has the following advantages or beneficial effects: by abutting one side of the protective net against the first guide wall of the volute tongue, the volute tongue provides additional support for the protective net. In this way, a fixed limiting structure is formed between the protective net and the volute tongue, resulting in a tight connection and fixation structure between the protective net, the volute casing, and the volute tongue. This not only gives the protective net good impact resistance after installation but also improves the structural stability between the volute casing and the volute tongue. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of an air conditioner according to an embodiment of this application;

[0029] Figure 2 for Figure 1 Internal diagram;

[0030] Figure 3 for Figure 2 A schematic diagram of the indoor fan assembly;

[0031] Figure 4 for Figure 3 Schematic diagram of the central duct housing;

[0032] Figure 5 for Figure 4 An exploded view;

[0033] Figure 6 for Figure 4 A diagram of the back of the car;

[0034] Figure 7 for Figure 1 A partial cross-sectional schematic diagram;

[0035] Figure 8 for Figure 7 A magnified view of a portion at point D;

[0036] Figure 9 for Figure 6 An exploded view;

[0037] Figure 10 for Figure 9An exploded view from another perspective;

[0038] Figure 11 for Figure 3 A partial schematic diagram;

[0039] Figure 12 for Figure 11 Enlarged view of a portion at point A;

[0040] Figure 13 for Figure 11 A schematic diagram from another perspective;

[0041] Figure 14 for Figure 13 A magnified view of a portion at point C;

[0042] Figure 15 for Figure 13 An exploded view;

[0043] Figure 16 for Figure 11 A magnified view of section B;

[0044] Figure 17 for Figure 11 A schematic diagram of the protective netting.

[0045] Figure 18 for Figure 13 An exploded view from another perspective;

[0046] The correspondence between the reference numerals and the component names is as follows:

[0047] 1. Chassis; 101. Accommodation space; 110. First subspace; 120. Second subspace; 130. Third subspace;

[0048] 21. Compressor; 22. Outdoor heat exchanger; 23. Indoor heat exchanger; 24. Outdoor fan assembly;

[0049] 3. Indoor fan assembly; 301, air outlet; 3011, slot; 3012, abutment groove; 3013, partition groove; 3014, snap-fit ​​groove; 3015, indoor air duct; 3016, air supply outlet; 302, stepped groove; 303, gap; 304, groove; 3051, first notch; 3052, second notch; 3053, third notch; 3061, first sliding groove; 3062, second sliding groove; 3063, first open end; 3064, second open end; 3071, first snap-fit ​​hole; 3072, second snap-fit ​​hole; 308, clearance groove;

[0050] 31. Duct housing; 314. Volute; 3141. Second guide wall; 3143. Limiting rib; 3144. Elastic connection part; 31441. Connecting unit; 315. Volute tongue; 3151. Abutment rib; 3152. Windward wall; 3153. First guide wall; 3154. Limiting wall; 3155. First mounting part; 3156. First buckle; 3157. Second mounting part; 3158. Second buckle; 3159. Baffle rib; 32. Cross-flow impeller; 37. Protective net; 371. Insertion part; 372. Abutment part; 373. First connecting rod; 374. Second connecting rod; 375. Third connecting rod; 376. Snap-fit ​​part; 38. Air guide plate;

[0051] 4. Support frame; 41. Hook; 42. Support arm. Detailed Implementation

[0052] This utility model provides an air conditioner. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0053] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] Figure 1 This is a schematic diagram of an air conditioner according to an embodiment of this application.

[0056] like Figure 1 As shown in some embodiments of the present invention, the air conditioner may include a housing 1. The housing 1 may be configured as the outer casing of the air conditioner. The interior of the housing 1 may be used to provide installation space.

[0057] In some embodiments, the housing 1 may adopt a hollow cuboid structure. The length of the housing 1 may be arranged along the height direction, so that the air conditioner can be installed vertically in the usage site, thereby increasing the height of the air conditioner and reducing the space occupied by the air conditioner.

[0058] It should be noted that in other embodiments, the external shape of the housing 1 can be designed as needed, and no limitation is made here.

[0059] In some embodiments, the housing 1 may include a base 11. The base 11 may provide support for components inside the housing 1.

[0060] Figure 2 for Figure 1 An internal diagram. It should be noted that... Figure 2 for Figure 1 A schematic diagram of the hidden casing 1.

[0061] like Figure 2 As shown, 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.

[0062] 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.

[0063] 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.

[0064] Compressor 21 is used to compress refrigerant gas and discharge the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser.

[0065] The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released into the surrounding environment through the condensation process.

[0066] 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.

[0067] 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.

[0068] like Figure 2 As shown, 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 housing 1 for heat exchange with the outdoor heat exchanger 22, forming a heat exchange airflow.

[0069] 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.

[0070] like Figure 2 As shown, 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.

[0071] For example, during the refrigeration cycle, the indoor heat exchanger 23 acts as an evaporator, and the indoor fan assembly 3 can draw indoor air from outside the casing 1 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.

[0072] 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 1 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.

[0073] like Figure 2 As shown, in some embodiments, the compressor 21, outdoor heat exchanger 22, outdoor fan assembly 24, indoor heat exchanger 23, and indoor fan assembly 3 can be respectively disposed in the receiving space 101 inside the casing 1. In this way, the casing 1 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.

[0074] 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 may be disposed in the first sub-space 110. The outdoor heat exchanger 22 and the outdoor fan assembly 24 may be disposed in the second sub-space 120. The indoor heat exchanger 24 and the indoor fan assembly 3 may be disposed 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 usage area.

[0075] Figure 3 for Figure 2 A schematic diagram of the indoor fan assembly.

[0076] like Figure 3 As shown, in some embodiments, the indoor fan assembly 3 may include a duct housing 31. The duct housing 31 may be disposed within 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.

[0077] like Figure 3 As shown, in some embodiments, an indoor air duct 3015 may be provided inside the air duct housing 31. The indoor air duct 3015 may communicate with the air outlet 301. The indoor fan assembly 3 may include a cross-flow fan 32. The cross-flow fan 32 is rotatably disposed inside the air duct housing 31. The cross-flow fan 32 can form airflow within the indoor air duct 3015. Specifically, when the cross-flow fan 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.

[0078] like Figure 3 As shown, 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. The volute 314 may be provided with an air outlet 301. 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 cross-flow fan 32 may be installed within the volute 314.

[0079] like Figure 3As shown, 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.

[0080] Figure 4 for Figure 3 Schematic diagram of the central duct housing; Figure 5 for Figure 4 An exploded view; Figure 6 for Figure 4 A diagram of the back of the structure.

[0081] like Figure 4 and Figure 6 As shown, in some embodiments, the volute 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 315 near the cross-flow fan 32. The windward wall 3152 can guide the airflow within the indoor air duct 3015 to flow smoothly out along the windward wall 3152.

[0082] like Figure 4 and Figure 5 As shown, in some embodiments, the volute tongue 315 may include a first guide wall 3153. The first guide wall 3153 may be disposed toward 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.

[0083] 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 the airflow smoothly into the air outlet 301, improving the air delivery efficiency.

[0084] like Figure 6 As shown, 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.

[0085] The second guide wall 3141 of the volute 314 is located 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 flow sequentially along the windward wall 3152, the first guide wall 3153 and the second guide wall 3141 and then to the air outlet 301.

[0086] Figure 7 for Figure 1 A partial cross-sectional schematic diagram; Figure 8 for Figure 7 A magnified view of a portion of point D.

[0087] like Figure 5 , Figure 7 and Figure 8 As shown, 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 provided on the side of the stepped groove 302 near the air outlet 301. The side of the second guide wall 3141 near the first guide wall 3153 may have a limiting rib 3143. The limiting rib 3143 may be engaged in the stepped groove 302. The baffle rib 3159 may be engaged on the side of the limiting rib 3143 near the air outlet 301, and the baffle rib 3159 may 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 rib 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.

[0088] like Figure 8 As shown, 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.

[0089] Specifically, such as Figure 8As shown, 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.

[0090] 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.

[0091] like Figure 8As shown, 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.

[0092] 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.

[0093] like Figure 8 As shown, in some embodiments, the limiting rib 3143 may have a groove 304 on the side facing the air outlet 301. The baffle rib 3159 may rest within the groove 304.

[0094] Specifically, by setting a groove 304 on the side of the limiting rib 3143 facing the air outlet 301, and placing the baffle rib 3159 against the groove 304, the cooperative arrangement of the baffle rib 3159 and the groove 304 can enable the first guide wall 3153 and the second guide wall 3141 to form a tight contact when they are engaged. The protruding rib can be embedded in the groove 304 to form a snap-fit ​​structure. The tight contact between the two can further reduce the gap between the first guide wall 3153 and the second guide wall 3141. Furthermore, the cooperation between the 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 groove 304 and the limiting rib 3143 is only a plane, the structure of the limiting rib 3143 having a groove 304 on the side 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.

[0095] like Figure 8 As shown, 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 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.

[0096] 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.

[0097] Specifically, 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.

[0098] like Figure 8 As shown, 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.

[0099] like Figure 4 As shown, 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.

[0100] Specifically, the volute 314 is arranged inside the air conditioner along the height direction of the air conditioner, and the volute tongue 315 is arranged inside the volute 314 along the height direction of the air conditioner. 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 process of the second guide wall 3141 engaging with the first guide wall 3153, the second guide wall 3141 can generate a certain elastic deformation, so that the limiting rib 3143 can be more smoothly engaged in the stepped groove 302.

[0101] 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.

[0102] like Figure 5 As shown, 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] Figure 9 for Figure 6 An exploded view; Figure 10 for Figure 9 An exploded view from another perspective;

[0107] like Figure 9 and Figure 10 As shown, 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 within the first sliding groove 3061 through the first open end 3063.

[0108] 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.

[0109] like Figure 9 and Figure 10 As shown, in some embodiments, the first mounting portion 3155 may be provided with a first buckle 3156 facing the first slide groove 3061. The first slide groove 3061 may be provided with a first engaging hole 3071. When the first mounting portion 3155 and the first slide groove 3061 are installed in place, the first buckle 3156 can be engaged in the first engaging hole 3071.

[0110] 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 of the cross-flow fan, which may affect the stability of the assembly structure between the volute tongue 315 and volute housing 314. By providing a first buckle 3156 on 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.

[0111] like Figure 9 and Figure 10 As shown, 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 the outside 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.

[0112] 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.

[0113] like Figure 9 and Figure 10 As shown, 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.

[0114] like Figure 9 and Figure 10 As shown, 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 snap-fit ​​hole 3072. When the second mounting portion 3157 and the second slide groove 3062 are installed in place, the second latch 3158 can be snapped into the first snap-fit ​​hole 3071.

[0115] 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.

[0116] like Figure 3As shown, 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 cross-flow fan wheel 32, thereby improving user safety.

[0117] Figure 11 for Figure 3 A partial schematic diagram; Figure 12 for Figure 11 A partial schematic diagram; Figure 13 for Figure 12 A magnified view of part A.

[0118] like Figure 11 and Figure 12 As shown, in some embodiments, the side of the duct housing 31 near the air outlet 301 may be provided with a slot 3011. One side of the protective net 37 may be provided with a plug-in portion 371 arranged opposite to the slot 3011. 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.

[0119] 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.

[0120] Figure 13 for Figure 11 A schematic diagram from another perspective; Figure 14 for Figure 13 A magnified view of a portion of point C.

[0121] like Figure 13 and Figure 14 As shown, 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.

[0122] 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.

[0123] 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 37 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.

[0124] In this embodiment, a slot 3011 is provided on the side of the air 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 air 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 air duct housing 31, and the other side of the protective net 37 can abut against the air 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 it 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.

[0125] 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 the existing technology, it not only solves the problem that the screw structure is prone to rust, affecting the user's use and appearance, but also has good impact resistance.

[0126] like Figure 13 and Figure 14 As shown, 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 may 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.

[0127] 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.

[0128] like Figure 13 and Figure 14 As shown, 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.

[0129] Figure 15 for Figure 13 An exploded view; Figure 16 for Figure 11 A magnified view of section B.

[0130] like Figure 15 As shown, 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.

[0131] like Figure 1 and Figure 2 As shown, 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. The air guide vane 38 is rotatably disposed on the air duct housing 31. The air guide vane 38 guides airflow to blow into the room at different angles by rotating.

[0132] like Figure 2 and Figure 3 As shown, 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 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.

[0133] like Figure 15 As shown, 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.

[0134] 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.

[0135] like Figure 15 As shown, in some embodiments, the support frame 4 may be disposed 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 toward the side away from the indoor air duct 3015, causing the protective net 37 to deform toward the side away from the indoor air duct 3015.

[0136] 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.

[0137] like Figure 15 and Figure 16 As shown, 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.

[0138] 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.

[0139] To improve the aesthetics of current air conditioners and optimize airflow distribution at the vent 301, the vent 301 is often designed in 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, multiple hooks 41 are used 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 vent 301 during installation, thus improving the overall aesthetics of the air conditioner.

[0140] like Figure 15 As shown, in some embodiments, the hooks 41 may include two. The two hooks 41 may be symmetrically distributed along the center of the protective net 37.

[0141] like Figure 15 As shown, 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 protective net 37 can be provided with a slot 3013. The slot 3013 can be arranged to extend laterally along the protective net 37. The slot 3013 can be aligned with the laterally arranged direction of the support frame 4. The hook 41 can be engaged with the side edge of the slot 3013.

[0142] 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.

[0143] 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.

[0144] Figure 17 for Figure 11 A schematic diagram of the protective netting.

[0145] like Figure 15 and Figure 17 As shown, in some embodiments, the protective net 37 may include a first connecting rod 373 extending laterally. Two first connecting rods 373 may be included. The 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.

[0146] Specifically, the first connecting rod 373 is arranged horizontally on the protective net 37, and the two first connecting rods 373 are arranged at vertical intervals, forming an interval groove 3013. The interval groove 3013 not only serves as a connection port for the airflow in the indoor air duct 3015 to flow through the protective net 37, but also provides an embedding space for the hook 41, so that the hook 41 can extend into the interval groove 3013 to engage with the side edge of one of the first connecting rods 373, further improving the stability of the connection.

[0147] like Figure 15 and Figure 16 As shown, 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.

[0148] like Figure 16 As shown, 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 be positioned downwards. The hook 41 can engage with the side edge of the lower rod.

[0149] like Figure 11 As shown, in some embodiments, multiple slots 3011 may be provided. Multiple slots 3011 may be distributed vertically and intermittently on one side of the air outlet 301 on the air duct housing 31. Multiple plug-in portions 371 may be provided, and multiple plug-in portions 371 may be arranged vertically and intermittently on one side of the protective net 37, and the plug-in portions 371 may be arranged in a one-to-one correspondence with the slots 3011.

[0150] 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.

[0151] In some embodiments, the slot 3011 may be formed by a sidewall recess of the air duct housing 31.

[0152] like Figure 13 As shown, in some embodiments, multiple abutment grooves 3012 may be provided. Multiple abutment grooves 3012 may be distributed vertically and intermittently on the air duct housing 31 along the other side of the air outlet 301. Multiple abutment portions 372 may be provided, and multiple abutment portions 372 may be arranged vertically and intermittently along the other side of the protective net 37, and the abutment portions 372 may be arranged in a one-to-one correspondence with the abutment.

[0153] 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.

[0154] 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.

[0155] like Figure 11 and Figure 13 As shown, 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.

[0156] In some embodiments, the protective net 37 may include a second connecting rod 374. The second connecting rod 374 may be arranged laterally. One laterally oriented end of the second connecting rod 374 may be bent to form an abutment portion 372. The other laterally oriented end of the connecting rod may be bent to form a insertion portion 371.

[0157] 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.

[0158] like Figure 17 As shown, 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.

[0159] like Figure 17 As shown, 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 second connecting rods 374, allowing airflow to smoothly flow through the connecting hole to the outside of the air outlet 301.

[0160] like Figure 17 As shown, in some embodiments, a second connecting rod 374 may be located at the top of the protective net 37. The opposite sides of the second connecting rod 374 may be bent downwards to form an abutment portion 372 and an insertion portion 371, respectively.

[0161] Specifically, by bending the opposite sides of the second connecting rod 374 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 the second connecting rod 374 downwards prevents the end of the rod from directly abutting the slot 3011 or the abutment groove 3012, thus 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.

[0162] like Figure 17 As shown, 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.

[0163] In some embodiments, the two sides of the first connecting rod 373 may be bent in the same direction to form an abutment portion 372 and a plug portion 371 with the same opening direction.

[0164] like Figure 17 As shown, in some embodiments, a second connecting rod 374 may be located at the bottom end of the protective net 37, and the opposite sides of the second connecting rod 374 may be bent upward to form an abutment portion 372 and an insertion portion 371, respectively.

[0165] Specifically, by bending the opposite sides of the second connecting rod 374 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 the second connecting rod 374 upwards prevents the end of the second connecting rod 374 from directly abutting the slot 3011 or the 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.

[0166] like Figure 17 As shown, in some embodiments, the protective net 37 may include a third connecting rod 375. The third connecting rod 375 may extend along the length of the protective net. The third connecting rod 375 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 third connecting rod 375 and the second connecting rod 374, so that airflow can smoothly flow through the connecting holes to the outside of the air outlet 301.

[0167] In some embodiments, multiple third connecting rods 375 may be provided. The multiple third connecting rods 375 may be arranged at lateral intervals. The multiple third connecting rods 375 may each form multiple communicating holes with a plurality of second connecting rods 374.

[0168] like Figure 17 As shown, in some embodiments, the protective net 37 may include a snap-fit ​​portion 376. Two snap-fit ​​portions 376 may be provided. The two snap-fit ​​portions 376 may be respectively located at the top and bottom ends 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 located at the top and bottom ends can be correspondingly inserted into the snap-fit ​​grooves 3014. In this way, 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.

[0169] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of this application is limited only by the appended claims.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises: a casing configured as an outer shell of the air conditioner; an indoor heat exchanger arranged in the casing and configured to exchange heat with indoor air; an indoor fan assembly arranged in the casing and adjacent to the indoor heat exchanger, the indoor fan assembly comprising: a volute arranged in the casing, the volute being provided with an indoor air duct, and the volute being provided with an air outlet; a volute tongue arranged in the volute and adjacent to one side of the air outlet, the volute tongue comprising: a windward wall arranged towards the indoor air duct; a first flow guide wall arranged towards the air outlet, one side of the first flow guide wall being connected to one side of the windward wall adjacent to the air outlet; wherein the volute comprises a second flow guide wall arranged on one side of the air outlet, and the second flow guide wall is connected to one side of the first flow guide wall away from the windward wall; one side of the first flow guide wall towards the second flow guide wall is provided with a stepped groove, and the first flow guide wall is provided with a blocking rib arranged on one side of the stepped groove adjacent to the air outlet; one side of the second flow guide wall adjacent to the first flow guide wall is provided with a limiting rib, the limiting rib is clamped in the stepped groove, the blocking rib is clamped on one side of the limiting rib adjacent to the air outlet, and the blocking rib covers at least part of the gap between the limiting rib and the first flow guide wall adjacent to the air outlet.

2. The air conditioner of claim 1, wherein: one side of the limiting rib towards the air outlet is provided with a groove, and the blocking rib is arranged in the groove.

3. The air conditioner of claim 1, wherein: the volute tongue comprises a limiting wall arranged on one side of the first flow guide wall away from the windward wall; the stepped groove is formed between one side of the limiting wall adjacent to the air outlet and an end wall end of the first flow guide wall arranged towards the air outlet; the second flow guide wall is abutted on one side of the limiting wall towards the air outlet.

4. The air conditioner of claim 3, wherein: the second flow guide wall is arranged along the height direction of the air conditioner, an upper end of the second flow guide wall adjacent to one side of the first flow guide wall is provided with a first gap, and a lower end of the second flow guide wall adjacent to one side of the first flow guide wall is provided with a second gap; a portion of the second flow guide wall between the first gap and the second gap forms an elastic connecting portion, and the limiting rib is arranged on one end of the elastic connecting portion adjacent to the first flow guide wall.

5. The air conditioner of claim 4, wherein: the second flow guide wall is provided with a third gap between the first gap and the second gap to divide the elastic connecting portion into two elastic connecting units.

6. The air conditioner of claim 1, wherein: the volute is arranged along the height direction of the air conditioner, and the volute tongue is arranged in the volute along the height direction of the air conditioner. The upper end of the volute tongue is formed with a first mounting portion, and the upper end of the volute is recessed with a first sliding groove having a first open end arranged towards the outside of the volute. The first mounting portion can be inserted into the first sliding groove through the first open end.

7. The air conditioner of claim 6, wherein The first mounting portion is provided with a first buckle towards the first sliding groove, and the first sliding groove is provided with a first clamping hole. When the first mounting portion and the first sliding groove are installed in place, the first buckle is clamped in the first clamping hole.

8. The air conditioner of claim 1, wherein The volute is arranged along the height direction of the air conditioner, and the volute tongue is arranged in the volute along the height direction of the air conditioner. The lower end of the volute tongue is formed with a second mounting portion, and the lower end of the volute is recessed with a second sliding groove having a second open end arranged towards the outside of the volute. The second mounting portion can be inserted into the second sliding groove through the second open end.

9. The air conditioner of claim 1, wherein The indoor fan assembly further comprises a support frame arranged at the air outlet, and one end of the support frame is connected to the second flow guide wall. The first flow guide wall is provided with an avoiding slot having an opening arranged towards the air outlet, and one end of the support frame is embedded in the avoiding slot.

10. The air conditioner of claim 1, wherein The indoor fan assembly further comprises a protective screen arranged at the air outlet, and the volute tongue is provided with an abutting groove towards one side of the protective screen. One side of the protective screen is provided with an abutting portion abutting in the abutting groove to fix one side of the protective screen on the volute tongue.

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