Indoor unit of a wall-mounted air conditioner

Abstract

The utility model provides a kind of indoor unit of wall-mounted air conditioner, belong to air conditioning technical field.Indoor unit of wall-mounted air conditioner includes: cabinet, its upper is equipped with air inlet and air outlet, cabinet includes: base;Cover, cover is equipped on base, cover has front panel;Cross-flow fan, it is set on base and is close to air outlet setting;Indoor heat exchanger, it is set on base, indoor heat exchanger includes by lower to upper sequentially connected first fold heat exchanger, second fold heat exchanger and third fold heat exchanger;First fold heat exchanger and second fold heat exchanger are arranged at angle and form the space between folds towards front panel between the two;At least one supporting structure, it is set on the side of front panel towards indoor heat exchanger, supporting structure is located in the length direction of front panel middle region, and its end away from front panel forms and extends into the support portion in the space between folds, and there is gap between support portion and the side wall of the space between folds, avoid deformation too much in the process of transport drop of indoor heat exchanger.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and in particular relates to a wall-mounted air conditioner indoor unit. Background Technology

[0002] As the indoor unit of a split-type air conditioning system, the wall-mounted air conditioner indoor unit is mainly used for indoor air circulation and heat exchange. A typical wall-mounted air conditioner indoor unit includes core components such as a casing, an indoor heat exchanger, and a cross-flow fan. The casing has air inlets and outlets, and the indoor heat exchanger is fixedly mounted on the base of the casing for heat exchange with the flowing air. The cross-flow fan extends along the length of the casing and is mounted on the base; its rotation creates airflow circulation, achieving the air conditioning function in the room.

[0003] The indoor heat exchanger is a multi-fold heat exchanger designed to increase the contact area with indoor air within the limited internal space of the casing, thereby improving heat exchange capacity. The indoor heat exchanger is fixed to the base by end plates at both ends along its length for installation positioning. To improve heat exchange efficiency for the same volume, small-diameter copper tubes are commonly used as the heat exchange tubes in indoor heat exchangers. However, while the small-diameter design brings efficiency advantages, it also leads to a decrease in the overall rigidity of the indoor heat exchanger. During transportation and drops, the support method of fixing only the two ends is insufficient to provide effective constraint on its middle span, causing excessive bending deformation in the middle of the indoor heat exchanger. This deformation directly affects the effective heat exchange area and internal flow channels of the heat exchanger, leading to decreased air conditioning performance, abnormal operation, and even refrigerant leakage, seriously affecting the normal use and reliability of the product.

[0004] In related technologies, there are solutions that include support or anti-collision structures on the side of the front panel of the casing facing the indoor heat exchanger. However, existing support structures support the main body of the panel or casing's outer cover (frame), which can cause plastic collapse of the outer cover (frame) during user pressing or assembly, leading to collisions with the indoor heat exchanger and resulting in fin collapse and leakage. Anti-collision structures protect the indoor heat exchanger from impacts, preventing the risk of pipe dents caused by the panel colliding with it. Neither existing support nor anti-collision structures can solve the problem of excessive deformation in the middle of small-diameter indoor heat exchangers during transport and drops. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, This utility model provides a wall-mounted air conditioner indoor unit, which includes: The housing has an air inlet and an air outlet, and the housing includes: Base; An outer cover is fitted onto the base, and the outer cover has a front panel; A cross-flow fan is mounted on the base and positioned near the air outlet, with the axial direction of the cross-flow fan extending along the length of the housing. An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the casing. The indoor heat exchanger is located on the windward side of the cross-flow fan. The indoor heat exchanger includes a first fold heat exchanger, a second fold heat exchanger, and a third fold heat exchanger. The first fold heat exchanger, the second fold heat exchanger, and the third fold heat exchanger are sequentially connected to form a semi-enclosed structure. The semi-enclosed structure has an opening facing the cross-flow fan to surround a portion of the cross-flow fan. The first folding heat exchanger and the second folding heat exchanger are arranged at an angle and a folding space is formed between them facing the front panel; At least one support structure is provided on the side of the front panel facing the indoor heat exchanger, the support structure is located in the middle region of the front panel in the length direction, and the end of the support structure away from the front panel forms a support portion extending into the fold space, and there is a gap between the support portion and the side wall of the fold space.

[0006] The above technical solution has the following advantages or beneficial effects: By setting a support structure in the middle area along the length of the front panel, an effective intermediate fulcrum can be provided for the indoor heat exchanger during transport and drop, thereby significantly shortening its stress span and effectively suppressing and reducing the bending deformation of the indoor heat exchanger under impact inertia. This avoids problems such as fin blockage, increased wind resistance, and refrigerant leakage that may result from excessive deformation. Simultaneously, during transport and drop, the support acts directly on the transition space between the first and second heat exchangers, effectively preventing misalignment or angular changes under impact, further enhancing the overall stability of the structure. Furthermore, a gap is provided between the support and the side wall of the transition space, achieving a balance between "impact protection" and "normal operation." This provides limiting support during drop and ensures that the indoor heat exchanger will not make hard contact with the support under the influence of thermal expansion and contraction during air conditioning operation, thereby avoiding fin wear or deformation caused by long-term stress accumulation and extending the service life of the indoor heat exchanger.

[0007] According to an embodiment of this disclosure, the support portion is covered with a buffer protective layer.

[0008] The above technical solution has the following advantages or beneficial effects: by setting a buffer protective layer to absorb part of the impact energy, it effectively prevents the support part from having a hard collision with the indoor heat exchanger at the moment of falling, and avoids crushing the fins or copper tubes of the indoor heat exchanger due to excessive instantaneous impact force.

[0009] According to embodiments of this disclosure, the buffer protective layer is made of sponge or foam.

[0010] The above technical solution has the following advantages or beneficial effects: sponge or foam materials are low in cost, low in density, elastic and have good energy absorption, and are easy to process and paste. Therefore, they can form an efficient buffer and protective layer in an economical and convenient way, thereby reliably realizing their buffer and protective function.

[0011] According to embodiments of this disclosure, the support structure is provided with one or more, and the plurality of the support structures are spaced apart along the length direction of the housing; and / or, the support structure is integrally injection molded with the front panel.

[0012] The above technical solution offers the following advantages or beneficial effects: For wall-mounted air conditioner indoor units of different lengths, one or more support structures can provide flexible and sufficient support coverage. For longer models, multiple spaced support points can divide the indoor heat exchanger into several shorter spans, providing uniform and comprehensive support and preventing bending at multiple locations. Furthermore, one-piece injection molding helps reduce the number of parts, simplifies assembly, and improves structural consistency and reliability.

[0013] According to an embodiment of this disclosure, the indoor heat exchanger has end plates at both ends along the length of the casing, and an insert located in the fold space is connected between the two end plates. The insert blocks airflow from passing through the connection between the first and second fold heat exchangers.

[0014] The above technical solution has the following advantages or beneficial effects: the insert connects the left and right end plates, forming an additional reinforcing structure inside the indoor heat exchanger, improving its overall bending stiffness and further preventing excessive deformation of the indoor heat exchanger during transportation and drops. In addition, the insert, positioned at the fold space, prevents air leakage at the connection point, thus improving heat exchange efficiency.

[0015] According to an embodiment of this disclosure, the insert includes a support plate and a wind deflector connected together. The support plate is located below the support portion and spaced apart from the support portion. The wind deflector is connected to the end of the support plate away from the front panel and opposite to the connection point.

[0016] The above technical solution has the following advantages or beneficial effects: The embedded part is roughly L-shaped, which can simultaneously achieve the two functions of "internal support" and "windproof sealing". The spacing design between the support part and the support plate can form a double-layer support and restraint: when falling, the indoor heat exchanger contacts the support part and the support plate successively, providing progressive resistance and avoiding instantaneous impact overload. The wind baffle directly faces the airflow direction, effectively blocking lateral air leakage at the fold space, and improving the sealing performance of the fold space.

[0017] According to an embodiment of this disclosure, the distance B between the support portion and the support plate satisfies: B≥2mm, B≤5mm.

[0018] The above technical solution has the following advantages or beneficial effects: If B < 2mm, the distance between the support part and the support plate is too small, which can easily lead to assembly interference or prestress. If B > 5mm, the distance between the support part and the support plate is too large, and the support plate will not provide timely auxiliary support during a fall. By setting the distance B within a reasonable range of 2-5mm, both assembly tolerance and transient response can be taken into account, ensuring the effectiveness of coordinated protection.

[0019] According to an embodiment of this disclosure, the support portion includes a first sidewall and a third sidewall, the first sidewall being arranged parallel to a first side of the first heat exchanger near the support portion, and the third sidewall being arranged parallel to a second side of the second heat exchanger near the support portion.

[0020] The above technical solution has the following advantages or beneficial effects: The support part of the above structure optimizes the contact form between the support part and the indoor heat exchanger, changing it from a possible "point contact" or "line contact" to a stable "surface contact". This not only increases the contact area, disperses stress, and avoids crushing local fins, but also provides more stable limiting, which can better restrict the displacement and deflection of the indoor heat exchanger in any direction.

[0021] According to an embodiment of this disclosure, the distance A between the third sidewall and the second sidewall satisfies: A≥2mm, A≤5mm.

[0022] The above technical solution has the following advantages or beneficial effects: If A > 5mm, the support part will need a longer time / displacement to contact the indoor heat exchanger during transport and drop, missing the optimal cushioning and support opportunity. If A < 2mm, the gap is too small, which can easily lead to assembly interference or prestress. By setting the distance A within the range of 2~5mm, a balance between support effectiveness and assembly processability is ensured.

[0023] According to an embodiment of this disclosure, the support portion further includes a second sidewall, wherein the first sidewall, the second sidewall, and the third sidewall are connected in sequence, and the second sidewall is disposed away from the front panel relative to the first sidewall and the third sidewall.

[0024] The above technical solution has the following advantages or beneficial effects: the first sidewall, the second sidewall and the third sidewall are connected in sequence to form a support part with a roughly U-shaped structure, which greatly enhances the structural strength and stability of the support part itself. It can stably support the indoor heat exchanger when it is dropped during transportation, and effectively suppress and reduce the bending deformation of the indoor heat exchanger under impact inertia. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the appearance of a wall-mounted air conditioner indoor unit according to one embodiment of the present disclosure; Figure 2 This is a structural schematic diagram of a wall-mounted air conditioner indoor unit according to one embodiment of this disclosure; Figure 3 This is a partial exploded schematic diagram of a wall-mounted air conditioner indoor unit according to one embodiment of this disclosure; Figure 4 This is a structural schematic diagram of the outer cover according to one embodiment of the present disclosure; Figure 5 This is a front view of the indoor unit of a wall-mounted air conditioner according to one embodiment of this disclosure; Figure 6 yes Figure 5 Sectional view at point AA; Figure 7 yes Figure 6 A magnified view of a section at point A in the middle; Figure 8 This is a cross-sectional view of a wall-mounted air conditioner indoor unit according to another embodiment of this disclosure; Figure 9 yes Figure 8 A magnified view of a section at point B in the middle; Figure 10 This is a partial cross-sectional view of a wall-mounted air conditioner indoor unit according to one embodiment of the present disclosure.

[0026] In the above figures: indoor unit of wall-mounted air conditioner 100; casing 1; base 11; outer cover 12; front panel 121; air inlet 13; air outlet 14; indoor heat exchanger 2; first fold heat exchanger 21; second fold heat exchanger 22; third fold heat exchanger 23; cross-flow fan 3; support structure 4; support part 41; first side wall 411; second side wall 412; third side wall 413; fold space 4; embedded part 5; support plate 51; wind baffle 52; buffer protective layer 6; end plate 7. Detailed Implementation

[0027] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0028] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0029] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The wall-mounted air conditioner indoor unit 100 provided in this utility model embodiment can have various implementation forms, as detailed below. Figures 1-10 The indoor unit 100 of the wall-mounted air conditioner is described.

[0033] It should be noted that the indoor unit 100 of the wall-mounted air conditioner is the indoor unit of the air conditioner. The indoor unit 100 is installed indoors and is used for heat exchange with the indoor environment. In addition, the air conditioner also includes an outdoor unit, which is usually installed outdoors and is used to carry the heat from indoors to outdoors.

[0034] refer to Figure 1 The wall-mounted air conditioner indoor unit 100 may include a housing 1. The housing 1 is disposed at the top of the room or in the upper space of the room, with the front side of the housing 1 facing the user and the rear side of the housing 1 facing the wall, and is suitable for connection to the wall.

[0035] The casing 1 forms the overall appearance of the wall-mounted air conditioner indoor unit 100. The casing 1 is rectangular, with the left and right ends being the two ends of the casing 1 along its own length.

[0036] The casing 1 has an internal accommodating space. This space is used to house and fix various components in the wall-mounted air conditioner indoor unit 100, which can prevent external objects from colliding with the various components inside the casing 1, thereby improving the reliability of the wall-mounted air conditioner indoor unit 100 during transportation or installation.

[0037] refer to Figure 3 In some embodiments of this application, the housing 1 may include a base 11. The base 11 forms the rear side of the indoor air conditioning unit 100 and is adapted to be mounted on a wall.

[0038] Continue to refer to Figure 3 The housing 1 may include an outer cover 12. The outer cover 12 is mounted on the base 11, and a receiving space is formed between the outer cover 12 and the base 11.

[0039] The outer cover 12 is roughly in the shape of a cuboid frame. The rear side of the outer cover 12 is open, and the outer cover 12 covers the front side of the base 11 and is connected to the base 11 to form the housing 1.

[0040] In some embodiments of this application, the outer cover 12 may be integrally formed. Of course, in other embodiments, the outer cover 12 may be separate components. The outer cover 12 may include a front panel.

[0041] refer to Figure 1 The housing 1 may include an air inlet 13. The air inlet 13 is connected to the housing space and serves as the inlet for external air to flow into the housing 1, allowing indoor air to enter the housing space through the air inlet 13.

[0042] refer to Figure 2 The housing 1 may include an air outlet 14. The air outlet 14 is connected to the receiving space and serves as an outlet for airflow within the housing 1, allowing airflow within the receiving space to flow out through the air outlet 14.

[0043] In some embodiments of this application, the air inlet 13 may be located at the top of the housing 1. The air outlet 14 may be located at the bottom front side of the housing 1. Both the air inlet 13 and the air outlet 14 are located on the outer cover 12. The air outlet 14 is elongated and extends along the length of the casing 1, improving the aesthetics of the wall-mounted air conditioner indoor unit 100. When the wall-mounted air conditioner indoor unit 100 is working, it draws in air from the top and discharges air towards the bottom front, facilitating installation.

[0044] It should be noted that the directions described in the text are based on the direction in which the user faces the indoor unit 100 of the wall-mounted air conditioner. Specifically, the side of the indoor unit 100 facing the user when in use is defined as the front side, and the opposite side is defined as the rear side. The left and right sides are distinguished by the direction in which the user faces the indoor unit 100 of the wall-mounted air conditioner.

[0045] In some embodiments of this application, reference is made to Figure 3 The indoor unit 100 of the wall-mounted air conditioner may include an indoor heat exchanger 2. The indoor heat exchanger 2 extends along the length of the casing 1, is disposed on the base 11 and located inside the air inlet 13, and is used to exchange heat with the airflow entering the casing 1 through the air inlet 13.

[0046] In some embodiments of this application, reference is made to Figure 6 The indoor unit 100 of the wall-mounted air conditioner may include a cross-flow fan 3.

[0047] The cross-flow fan 3 is mounted on the base 11 and positioned near the air outlet. The axial direction of the cross-flow fan 3 extends along the length of the housing 1.

[0048] When the indoor unit 100 of the wall-mounted air conditioner is running, the indoor air enters the casing 1 through the air inlet 13 under the action of the cross-flow fan 3. The indoor air in the casing 1 flows through the indoor heat exchanger 2 for heat exchange. The heat exchanged airflow is discharged to the outside through the air outlet 14, thereby enabling the air conditioner to cool and heat, play a role in regulating the indoor temperature, and achieve the user's comfortable temperature.

[0049] An air conditioner may include an outdoor heat exchanger and a compressor, which are installed in the outdoor unit of the air conditioner.

[0050] Air conditioners may include a throttling device. The throttling device is used to limit airflow. The throttling device can be provided in either the indoor or outdoor unit of the air conditioner.

[0051] Air conditioners execute a refrigeration cycle using a compressor, condenser, throttling device, and evaporator. The refrigeration cycle involves a series of processes including compression, condensation, expansion, and evaporation, supplying refrigerant to the conditioned and heat-exchanged air.

[0052] The compressor compresses the refrigerant gas at low temperature and low pressure and discharges it at high temperature and high pressure. The discharged refrigerant gas flows into the condenser.

[0053] The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0054] The throttling device causes the high-temperature, high-pressure liquid refrigerant condensed in the condenser to expand into a low-pressure liquid refrigerant.

[0055] The evaporator evaporates the refrigerant that expands in the throttling device and returns the refrigerant gas, now at a low temperature and low pressure, to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0056] In the indoor heat exchanger and the outdoor heat exchanger, one is a condenser and the other is an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in cooling mode.

[0057] In some embodiments of this application, the indoor heat exchanger 2 is a multi-fold heat exchanger. The multi-fold heat exchanger is connected in a semi-enclosed structure in a limited space to arrange longer heat exchange tubes, thereby increasing the contact area between the heat exchange tubes and the indoor air, thus improving the heat exchange capacity of the indoor heat exchanger 2 and achieving enhanced air conditioner performance and energy saving.

[0058] In this embodiment, the indoor heat exchanger 2 is located on the windward side of the cross-flow fan 3 to ensure that the airflow penetrates the indoor heat exchanger 2 evenly and to reduce noise.

[0059] refer to Figure 6 The indoor heat exchanger 2 may include a first fold heat exchanger 21, a second fold heat exchanger 22, and a third fold heat exchanger 23. The first fold heat exchanger 21, the second fold heat exchanger 22, and the third fold heat exchanger 23 are connected in sequence to form a semi-enclosed structure, which has an opening facing the cross-flow fan 3 to surround a portion of the cross-flow fan 3.

[0060] refer to Figure 7 The first heat exchanger 21 and the second heat exchanger 22 are arranged at an angle, and a fold space 4 facing the front panel 121 is formed between the first heat exchanger 21 and the second heat exchanger 22.

[0061] In related technologies, the indoor heat exchanger 2 of a wall-mounted air conditioner indoor unit 100 is typically fixed to a base via end plates 7 at both ends along its length for installation positioning. To improve heat exchange efficiency within the same volume, small-diameter copper tubes are commonly used as the heat exchange tubes of the indoor heat exchanger 2. However, while the small-diameter design brings efficiency advantages, it also leads to a decrease in the overall rigidity of the indoor heat exchanger 2. During transport and drops, the support method of fixing only the two ends is insufficient to provide effective constraint on its middle span, causing excessive bending deformation in the middle of the heat exchanger. This deformation directly affects the effective heat exchange area and internal flow channels of the heat exchanger, leading to decreased air conditioning performance, abnormal operation, and even refrigerant leakage, seriously affecting the normal use and reliability of the product.

[0062] To address the aforementioned technical problems, in some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include at least one support structure 4 located in the central region of the front panel 121 along its length, for providing support for the indoor heat exchanger 2 during transport drops, thereby providing intermediate span constraints and fundamentally suppressing impact deformation.

[0063] refer to Figure 4 At least one support structure 4 is provided on the side of the front panel 121 facing the indoor heat exchanger 2. In this embodiment, the support structure 4 is integrated with the front panel 121, directly utilizing existing components to achieve the support function, eliminating the need for additional fixed brackets, thus saving parts costs and assembly space. Furthermore, the front panel 121, as the main load-bearing component of the casing, possesses good structural rigidity. The integration of the support structure 4 with it forms a reinforced structure, significantly improving the overall impact resistance and structural reliability.

[0064] refer to Figure 7 The end of the support structure 4 away from the front panel 121 forms a support portion 41 extending into the fold space 4. There is a gap between the support portion 41 and the side wall of the fold space 4, which can accommodate manufacturing tolerances and thermal expansion and contraction, and avoid secondary stress.

[0065] In this embodiment, by setting a support structure 4 in the middle area of ​​the front panel 121 along its length, an effective intermediate support point can be provided for the indoor heat exchanger 2 when it is dropped during transportation, thereby significantly shortening its stress span, effectively suppressing and reducing the bending deformation of the indoor heat exchanger 2 under impact inertia, and avoiding problems such as fin blockage, increased wind resistance, and refrigerant leakage that may be caused by excessive deformation.

[0066] Meanwhile, during transport and drop, the support part 41 acts directly on the turning space 4 between the first and second heat exchangers 22, effectively preventing misalignment or angular changes under impact, further enhancing the overall stability of the structure. Furthermore, a gap is provided between the support part 41 and the side wall of the turning space 4, achieving a balance between "impact protection" and "normal operation." This provides limiting support during drop while ensuring that the indoor heat exchanger 2 does not make hard contact with the support part 41 under the influence of thermal expansion and contraction during air conditioning operation. This avoids fin wear or deformation caused by long-term stress accumulation, extending the service life of the indoor heat exchanger 2.

[0067] In some embodiments of this application, the support portion 41 is covered with a buffer protective layer 6.

[0068] By setting up a buffer protective layer 6 to absorb part of the impact energy, the support part 41 is effectively prevented from having a hard collision with the indoor heat exchanger 2 at the moment of falling, thus avoiding crushing of the fins or copper tubes of the indoor heat exchanger 2 due to excessive instantaneous impact force.

[0069] For example, the buffer protective layer 6 can be adhered to the support portion 41. This adhesion method simplifies the assembly process, ensures the buffer protective layer 6 is fixed in position, and prevents displacement that could lead to protective failure.

[0070] In some embodiments of this application, the buffer protective layer 6 may be made of sponge or foam.

[0071] Sponge or foam materials are low in cost, low in density, elastic and have good energy absorption properties. They are easy to process and adhere, so they can form an efficient buffer protective layer in an economical and convenient way, thereby reliably realizing their buffer protection function.

[0072] In some embodiments of this application, one or more support structures 4 are provided, and multiple support structures 4 are spaced apart along the length direction of the housing.

[0073] For wall-mounted air conditioner indoor units 100 of different lengths, one or more support structures 4 can provide flexible and adequate support coverage. For longer models, multiple spaced support points can divide the indoor heat exchanger 2 into multiple shorter spans, providing uniform and comprehensive support and preventing bending in multiple locations.

[0074] In some embodiments of this application, the indoor heat exchanger 2 has end plates 7 at both ends along the length of the casing, and an insert 5 is connected between the two end plates 7. (See reference) Figure 8 , Figure 9 The insert 5 is located in the fold space 4, and the insert 5 blocks the airflow from passing through the connection between the first fold heat exchanger 21 and the second fold heat exchanger 22.

[0075] In this embodiment, the insert 5 is connected to the end plates 7 on both sides, forming an additional reinforcing structure inside the indoor heat exchanger 2, which improves its overall bending stiffness and can further prevent excessive deformation of the indoor heat exchanger 2 during transportation and drops. In addition, the insert 5 blocks the fold space 4, which can prevent air leakage at the connection and improve heat exchange efficiency.

[0076] In some embodiments of this application, reference is made to Figure 10 The insert 5 may include a support plate 51, which is located below the support portion 41 and is spaced apart from the support portion 41 in the height direction of the housing.

[0077] The spacing between the support part 41 and the support plate 51 forms a double-layer support limit to provide secondary protection and displacement threshold control. During transport and drop, the indoor heat exchanger 2 contacts the support part 41 and the support plate 51 successively, providing progressive resistance to avoid instantaneous impact overload.

[0078] The insert 5 may include a wind deflector 52, which is connected to the end of the support plate 51 remote from the front panel 121. (Continue to refer to...) Figure 10 The wind baffle 52 is opposite to the connection between the first heat exchanger 21 and the second heat exchanger 22.

[0079] In this embodiment, the wind deflector 52 faces the airflow direction directly, effectively blocking lateral air leakage at the fold space 4, thus improving the sealing performance of the fold space 4.

[0080] For example, in this embodiment, the wind deflector 52 is arranged perpendicularly to the support plate 51, and the wind deflector 52 extends along the height direction of the housing. This arrangement makes the insert 5 approximately L-shaped, which can simultaneously achieve the functions of "internal support" and "windproof sealing".

[0081] In some embodiments of this application, reference is made to Figure 10 The distance B between the support part 41 and the support plate 51 satisfies: B≥2mm, B≤5mm, which ensures the optimal safe clearance range between the support part 41 and the support plate 51, and achieves the ideal balance between "zero interference during operation" and "effective support during drop".

[0082] If B < 2mm, the distance between the support part 41 and the support plate 51 is too small, which may cause assembly interference or prestress, and may lead to hard contact between the support part 41 and the support plate 51 during air conditioner operation.

[0083] If B > 5mm, the distance between the support part 41 and the support plate 51 is too large, and the support plate 51 will not be able to provide timely auxiliary support when falling.

[0084] In this embodiment, by setting the distance B within a reasonable range of 2-5mm, both assembly tolerance and transient response can be taken into account, ensuring the effectiveness of collaborative protection.

[0085] In some embodiments of this application, reference is made to Figure 9 The support portion 41 may include a third sidewall 413, which is arranged parallel to the second side surface of the second heat exchanger 22 near the support portion 41. This arrangement allows the third sidewall 413 to adapt to the second side surface of the second heat exchanger 22, changing the possible "point contact" or "line contact" into a stable "surface contact". This not only increases the contact area, disperses stress, and avoids crushing of local fins, but also provides more stable limiting, better restricting the displacement and deflection of the indoor heat exchanger 2 in any direction.

[0086] The support portion 41 may include a first sidewall 411, which is arranged parallel to the first side surface of the first folded heat exchanger 21 near the support portion 41. Similarly, the first sidewall 411 is adapted to the first side surface of the first folded heat exchanger 21, which not only increases the contact area, disperses stress, and avoids crushing of local fins, but also provides more stable positioning.

[0087] The support portion 41 may include a second sidewall 412, which is connected between the first sidewall 411 and the third sidewall 413, i.e., the first sidewall 411, the second sidewall 412, and the third sidewall 413 are connected sequentially. (Reference) Figure 7 and Figure 9The second sidewall 412 is positioned away from the front panel 121 relative to the first sidewall 411 and the third sidewall 413. That is, the two ends of the second sidewall 412 are respectively connected to the ends of the first sidewall 411 and the third sidewall 413 that are away from the front panel 121.

[0088] In this embodiment, the first sidewall 411, the second sidewall 412 and the third sidewall 413 are connected in sequence to form a stable, integrated U-shaped support, which greatly enhances the structural strength and stability of the support itself. It can stably support the indoor heat exchanger when it is dropped during transportation, effectively suppressing and reducing the bending deformation of the indoor heat exchanger under impact inertia.

[0089] In some embodiments of this application, reference is made to Figure 10 The distance A between the third sidewall 413 and the second sidewall satisfies: A≥2mm, A≤5mm.

[0090] If A > 5mm, under extreme impact conditions such as transportation or drops, the middle part of the indoor heat exchanger 2 needs to undergo significant bending deformation before the support part 41 can contact it and play a supporting and limiting role, thus missing the best time for buffering and support. Furthermore, after the support part 41 takes effect, the bending deformation of the indoor heat exchanger 2 may have already exceeded its safety limit, resulting in a poor support effect of the support structure 4.

[0091] If A < 2mm, the gap is too small, which can easily cause assembly interference or generate prestress.

[0092] In this embodiment, by setting the distance A within the range of 2~5mm, a balance between support effectiveness and assembly processability is ensured.

[0093] In some embodiments of this application, the support structure 4 is integrally injection molded with the front panel 121. Integral injection molding helps reduce the number of parts, simplifies assembly, and improves structural consistency and reliability.

[0094] Of course, in some other embodiments, the support structure 4 can be an independent structural component, fixedly installed on the side wall of the front panel 121 facing the indoor heat exchanger 2.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0096] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, include: The housing has an air inlet and an air outlet, and the housing includes: Base; An outer cover is fitted onto the base, and the outer cover has a front panel; A cross-flow fan is mounted on the base and positioned near the air outlet, with the axial direction of the cross-flow fan extending along the length of the housing. An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the casing. The indoor heat exchanger is located on the windward side of the cross-flow fan. The indoor heat exchanger includes a first fold heat exchanger, a second fold heat exchanger, and a third fold heat exchanger. The first fold heat exchanger, the second fold heat exchanger, and the third fold heat exchanger are sequentially connected to form a semi-enclosed structure. The semi-enclosed structure has an opening facing the cross-flow fan to surround a portion of the cross-flow fan. The first folding heat exchanger and the second folding heat exchanger are arranged at an angle and a folding space is formed between them facing the front panel; At least one support structure is provided on the side of the front panel facing the indoor heat exchanger, the support structure is located in the middle region of the front panel in the length direction, and the end of the support structure away from the front panel forms a support portion extending into the fold space, and there is a gap between the support portion and the side wall of the fold space.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The support portion is covered with a buffer protective layer.

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The buffer layer is made of sponge or foam.

4. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The support structure is provided in one or more ways, and the multiple support structures are spaced apart along the length direction of the housing; and / or, the support structure is integrally injection molded with the front panel.

5. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The indoor heat exchanger has end plates at both ends along the length of the casing, and an insert located in the fold space is connected between the two end plates. The insert prevents airflow from passing through the connection between the first fold heat exchanger and the second fold heat exchanger.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The insert includes a support plate and a wind deflector connected together. The support plate is located below the support portion and spaced apart from the support portion. The wind deflector is connected to the end of the support plate away from the front panel and is opposite to the connection point.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The distance B between the support part and the support plate satisfies: B≥2mm, B≤5mm.

8. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The support portion includes a first sidewall and a third sidewall. The first sidewall is arranged parallel to a first side of the first heat exchanger near the support portion, and the third sidewall is arranged parallel to a second side of the second heat exchanger near the support portion.

9. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, The distance A between the third sidewall and the second sidewall satisfies: A≥2mm, A≤5mm.

10. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, The support portion further includes a second sidewall, and the first sidewall, the second sidewall and the third sidewall are connected in sequence, with the second sidewall disposed away from the front panel relative to the first sidewall and the third sidewall.

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