An indoor unit of an air conditioner and an air conditioner

Abstract

This utility model discloses an indoor unit and an air conditioner. The indoor unit includes an air outlet assembly and a fan blade connecting assembly. The air outlet assembly is mounted on the bottom shell and has an air outlet state and a disassembled state. The fan blade connecting assembly includes a first connecting unit, one end of which is connected to a cross-flow fan blade, and the other end is connected to a drive component. The first connecting unit has a first state that drives the cross-flow fan blade and a second state that allows the cross-flow fan blade to be removed. When the first connecting unit switches to the second state and the air outlet assembly is in the disassembled state, the cross-flow fan blade can be removed through the air outlet. The cooperation between the bottom shell and the air outlet assembly solves the physical interference caused by the narrow air outlet, allowing the cross-flow fan blade to be removed from the front, avoiding insufficient installation space when disassembling from the side. At the same time, the state switching of the first connecting unit realizes the separation of the cross-flow fan blade from the drive component, eliminating the need to disassemble the motor and evaporator components in the traditional structure.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioner technology, specifically relating to an indoor unit of an air conditioner and an air conditioner. Background Technology

[0002] As a core component of the air duct system, the cross-flow fan blades of the indoor unit of an air conditioner are prone to accumulating dust during long-term operation, which seriously affects air delivery efficiency and air quality. Therefore, regular cleaning is essential.

[0003] However, in existing split-type air conditioner indoor units, the cross-flow fan blades are typically fixed directly to the motor shaft extending inside with screws, and their ends are supported in fan blade bearings. This assembly method makes disassembling and cleaning the fan blades extremely cumbersome. Users must first disassemble multiple components such as the panel, electrical box, and even the evaporator before they can remove the motor shaft from the fan blades and take them out. The connection between the evaporator piping and the outdoor unit further increases the difficulty and risk of disassembly, making it almost impossible for ordinary users to complete the cleaning operation themselves. Although some improved designs attempt to remove the fan blades from the side of the air conditioner to avoid disassembling the evaporator, such solutions are heavily dependent on the installation environment. When one side of the air conditioner is close to the wall, there is insufficient operating space, which limits their applicability and cannot fundamentally solve the problem of difficult fan blade disassembly. Utility Model Content

[0004] In view of this, the present invention provides an indoor unit and an air conditioner that can achieve convenient and safe disassembly and installation of the cross-flow fan blades without disassembling other complex components and without being strictly limited by the installation space.

[0005] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides an indoor unit for an air conditioner, including a bottom shell and an air duct, a cross-flow fan blade, and a drive component disposed within the bottom shell. The indoor unit further includes an air outlet assembly and a fan blade connecting assembly. The air outlet assembly is movably disposed on the bottom shell and has an air outlet state and a detachable state allowing the cross-flow fan blade to pass through. The fan blade connecting assembly includes a first connecting unit, one end of which is detachably connected to the cross-flow fan blade, and the other end of which is connected to the drive component. The first connecting unit has a first state that drives the cross-flow fan blade and a second state that allows the cross-flow fan blade to be removed. When the first connecting unit switches to the second state and the air outlet assembly is in the detachable state, the cross-flow fan blade can be removed through the air outlet.

[0006] In some embodiments, the first connecting unit includes a drive shaft and a drive seat. One end of the drive shaft is detachably connected to the cross-flow fan blade, and the other end is movably disposed in the drive seat. The drive seat is connected to the output end of the drive member. The drive seat is provided with a first accommodating cavity for accommodating the drive shaft.

[0007] In some embodiments, the fan blade connection assembly further includes a second connection unit, the second connection unit including a support shaft and a fixed seat, one end of the support shaft being detachably connected to the other end of the cross-flow fan blade, the other end of the support shaft being movably disposed in the fixed seat, the fixed seat being fixedly connected to the bottom shell; the fixed seat is provided with a second accommodating cavity for accommodating the support shaft.

[0008] In some embodiments, the connection between the drive shaft and the cross-flow fan blade, and the connection between the drive shaft and the drive seat, are provided with a flat structure for limiting and fasteners for fixing.

[0009] In some embodiments, a limiting portion is provided on the flat structure that mates with the cross-flow fan blade to limit the assembly position of the cross-flow fan blade on the drive shaft.

[0010] In some embodiments, the air outlet assembly is rotatably disposed on the bottom housing; the air outlet assembly is configured to change the width and orientation of the air outlet by rotation.

[0011] In some embodiments, the air outlet assembly includes an air duct body, a first decorative panel, and a second decorative panel, wherein the first decorative panel is disposed on the upper part of the air duct body, and the second decorative panel is detachably or movably disposed on the bottom of the air duct body.

[0012] In some embodiments, the air outlet assembly is rotatably connected to the bottom shell via rotating shafts disposed on both sides thereof; one of the rotating shafts is provided with a driven gear at its end.

[0013] In some embodiments, the bottom shell is provided with a gear set that meshes with the driven gear; the end of the gear set is provided with an operating part, which is exposed outside the bottom shell.

[0014] In some embodiments, the gear set is connected to a drive motor for driving its rotation.

[0015] In some embodiments, baffles are provided on both sides of the bottom housing; the baffles are configured to cover the exposed area formed between the air outlet assembly and the bottom housing when the air outlet assembly is in motion.

[0016] According to one aspect of this application, an embodiment of the present invention provides an air conditioner, the air conditioner including the above-described indoor unit.

[0017] Compared with the prior art, the indoor unit of the air conditioner of this utility model has at least the following beneficial effects:

[0018] The indoor unit of an air conditioner provided by this utility model includes a bottom shell and an air duct, a cross-flow fan blade, and a drive component disposed within the bottom shell. The indoor unit also includes an air outlet assembly and a fan blade connecting assembly. The air outlet assembly is movably disposed on the bottom shell and has a normal air outlet state and a detachable state through which the cross-flow fan blade can pass. The fan blade connecting assembly includes a first connecting unit, one end of which is detachably connected to the cross-flow fan blade, and the other end of which is connected to the drive component. The first connecting unit has a first state that drives the cross-flow fan blade and a second state that allows the cross-flow fan blade to be removed. When the first connecting unit switches to the second state and the air outlet assembly is in the detachable state, the cross-flow fan blade can be removed through the air outlet.

[0019] This invention solves the physical interference problem caused by the narrow air outlet in the prior art by combining the base shell with the movable air outlet assembly, allowing the cross-flow fan blades to be directly removed from the front, avoiding the limitation of insufficient installation space when disassembling from the side. Simultaneously, through the state-switching design of the first connecting unit of the fan blade connecting assembly, it achieves rapid separation of the cross-flow fan blades from the drive components, eliminating the need to disassemble the motor and evaporator components in traditional structures. Furthermore, this integrated design allows ordinary users to complete the fan blade disassembly and cleaning operation without professional tools, fundamentally solving the problems of disassembly complexity and environmental adaptability mentioned in the prior art.

[0020] The air conditioner provided by this utility model is designed based on the above-mentioned air conditioner indoor unit, and its beneficial effects are the same as those of the above-mentioned air conditioner indoor unit, which will not be repeated here.

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view of an indoor unit of an air conditioner provided in an embodiment of this utility model;

[0024] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0026] Figure 4 This is a schematic diagram of the structure of a drive shaft in the indoor unit of an air conditioner, provided by an embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the internal structure of an air conditioner indoor unit provided by an embodiment of this utility model;

[0028] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0029] Figure 7 This is a schematic diagram of the structure of an air outlet assembly in an indoor unit of an air conditioner, provided by an embodiment of this utility model;

[0030] Figure 8 This is a longitudinal sectional view of an indoor unit of an air conditioner provided in an embodiment of this utility model;

[0031] Figure 9 This is a cross-sectional view of the second decorative panel after disassembly in the indoor unit of an air conditioner, provided by an embodiment of this utility model.

[0032] Figure 10 This is a cross-sectional view of an air conditioner indoor unit in a disassembled state, provided by an embodiment of this utility model;

[0033] Figure 11 yes Figure 10 A magnified view of a section at point D;

[0034] Figure 12 yes Figure 10 This is a magnified view of a section at point E;

[0035] Figure 13 This is a cross-sectional view of an air conditioner indoor unit in operation, provided by an embodiment of this utility model.

[0036] Figure 14 yes Figure 13 A magnified view of a section at point F in the middle;

[0037] Figure 15 yes Figure 13 A magnified view of a section at point G in the middle;

[0038] Figure 16 This is a schematic diagram of the internal structure of an air conditioner indoor unit provided by an embodiment of this utility model.

[0039] in:

[0040] 1. Bottom shell; 2. Air duct; 3. Cross-flow fan blade; 4. Drive component; 5. Air outlet assembly; 51. Air duct body; 52. First decorative panel; 53. Second decorative panel; 54. Rotating shaft; 541. Driven gear; 6. Fan blade connecting assembly; 61. First connecting unit; 62. Second connecting unit; 611. Drive shaft; 612. Drive seat; 613. Flat structure; 614. Fastener; 621. Support shaft; 622. Fixing seat; 6121. First receiving cavity; 6131. ​​Limiting part; 6221. Second receiving cavity; 7. Gear set; 71. Operating part. Detailed Implementation

[0041] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0042] In the description of this utility model, it should be clarified that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "back," "left," "right," "up," "down," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this utility model.

[0043] 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Example 1

[0045] This embodiment provides an indoor unit for an air conditioner, such as... Figures 1-16As shown, the air conditioner includes a bottom shell 1 and an air duct 2, a cross-flow fan blade 3, and a drive component 4 disposed within the bottom shell 1. The indoor unit of the air conditioner also includes an air outlet assembly 5 and a fan blade connection assembly 6. The air outlet assembly 5 is movably disposed on the bottom shell 1 and has a normal air outlet state and a detachable state that allows the cross-flow fan blade 3 to pass through. The fan blade connection assembly 6 includes a first connection unit 61, one end of which is detachably connected to the cross-flow fan blade 3, and the other end is connected to the drive component 4. The first connection unit 61 has a first state that drives the cross-flow fan blade 3 and a second state that allows the cross-flow fan blade 3 to be removed. When the first connection unit 61 switches to the second state and the air outlet assembly 5 is in the detachable state, the cross-flow fan blade 3 can be removed through the air outlet.

[0046] The bottom shell 1 serves as the main supporting structure of the indoor unit of the air conditioner. The air duct 2 is fixed inside the bottom shell 1 and forms an airflow channel. The cross-flow fan blade 3 is installed inside the air duct 2 and its two ends are connected to the bottom shell 1 through the fan blade connecting assembly 6. The drive component 4 is fixed on the bottom shell 1 and is drivenly connected to one end of the cross-flow fan blade 3 through the first connecting unit 61 of the fan blade connecting assembly 6. The air outlet assembly 5 is movably installed at the air outlet position of the bottom shell 1 and covers the outlet area of ​​the air duct 2. More specifically, one end of the first connecting unit 61 is detachably connected to the cross-flow fan blade 3, and the other end is connected to the output end of the drive component 4, so that the drive component 4 can drive the cross-flow fan blade 3 to rotate through the first connecting unit 61; while the air outlet assembly 5 is installed on the bottom shell 1 through a movable connecting mechanism, and its position relationship can be switched between the normal air outlet state and the detached state.

[0047] The bottom shell 1 provides overall structural support and a base for component installation. The air duct 2 is used to guide and constrain the airflow direction. The cross-flow fan blade 3 generates forced airflow by rotating to achieve the air conditioning function. The drive component 4 outputs torque as a power source to drive the fan blade to rotate. The air outlet assembly 5 is used to adjust the air outlet direction and can expand the opening in the disassembled state to allow the cross-flow fan blade 3 to pass through. The first connecting unit 61 of the fan blade connecting assembly 6 realizes the power transmission and separation function between the drive component 4 and the cross-flow fan blade 3. Its two states correspond to the two mechanical working conditions of power transmission and fan blade disassembly, respectively.

[0048] Under normal air conditioning operation, the drive unit 4 transmits torque to the cross-flow fan blade 3 through the first connecting unit 61, causing it to rotate within the air duct 2. The airflow is guided by the air duct 2 and then blown out through the air outlet assembly 5, which is in normal air outlet state. When the fan blade needs to be cleaned, the first connecting unit 61 is first switched from the first state to the second state, that is, its axial constraint on the cross-flow fan blade 3 is released and the cross-flow fan blade 3 is disengaged from the drive unit 4. Then, the air outlet assembly 5 is adjusted to the disassembled state to enlarge its opening. Finally, the cross-flow fan blade 3 can be removed axially from the enlarged air outlet. The whole process does not require disassembling the air duct 2 or the drive unit 4 and other fixed components.

[0049] This embodiment solves the physical interference problem caused by the narrow air outlet in the prior art by cooperating with the bottom shell 1 and the movable air outlet assembly 5, allowing the cross-flow fan blade 3 to be directly removed from the front, avoiding the limitation of insufficient installation space when disassembling from the side. At the same time, through the state switching design of the first connecting unit 61 of the fan blade connecting assembly 6, the cross-flow fan blade 3 and the drive component 4 are quickly separated, eliminating the need to disassemble the motor and evaporator components in the traditional structure. Furthermore, this integrated design allows ordinary users to complete the fan blade disassembly and cleaning operation without professional tools, fundamentally solving the problems of disassembly complexity and environmental adaptability mentioned in the prior art.

[0050] In a specific embodiment, such as Figure 15 As shown, the first connecting unit 61 includes a drive shaft 611 and a drive seat 612. One end of the drive shaft 611 is detachably connected to the cross-flow fan blade 3, and the other end is movably disposed in the drive seat 612. The drive seat 612 is connected to the output end of the drive member 4. The drive seat 612 is provided with a first accommodating cavity 6121 for accommodating the drive shaft 611.

[0051] One end of the drive shaft 611 is connected to the cross-flow fan blade 3 via a detachable connection, and the other end is axially inserted into the first accommodating cavity 6121 inside the drive seat 612 and can move axially. The drive seat 612 is fixedly connected to the output end of the drive component 4 and rotates accordingly. The first accommodating cavity 6121 is an axial cavity structure opened inside the drive seat 612. Its length is slightly greater than the travel of the drive shaft 611 but slightly less than the total length of the drive shaft 611, so that the drive shaft 611 has a limited axial movement freedom in the cavity.

[0052] The core function of the drive shaft 611 is to transmit the torque of the drive component 4 to the cross-flow fan blade 3 when connected, and to release the mechanical constraint with the cross-flow fan blade 3 by axial movement when disassembly is required; the drive seat 612, as a power transfer structure, reliably transmits the rotational motion of the drive component 4 to the drive shaft 611; the first accommodating cavity 6121 provides axial movement space to allow the drive shaft 611 to retract when performing disassembly operations, while its length limitation ensures that part of the drive shaft 611 remains outside the cavity for subsequent reassembly.

[0053] Under normal operating conditions, the drive shaft 611 is locked in the drive seat 612 by fasteners and remains connected to the cross-flow fan 3. The torque of the drive component 4 is completely transmitted to the cross-flow fan 3 through the drive seat 612 and the drive shaft 611. When disassembly is required, the drive shaft 611 can move along the first accommodating cavity 6121 towards the drive component 4 after the fasteners are loosened, so that it is completely separated from the connection area of ​​the cross-flow fan 3, thereby eliminating the obstruction to the axial removal of the cross-flow fan 3. More specifically, the technical effect of this design is to achieve the dual functions of power transmission and rapid separation. Users can disconnect the power connection without disassembling the drive component 4 or other fixed components, which greatly simplifies the disassembly process of the cross-flow fan 3. At the same time, the length control of the first accommodating cavity 6121 ensures that the drive shaft 611 has sufficient retraction space, while avoiding the problem of it being completely retracted into the cavity and difficult to remove again, thus improving the convenience and reliability of operation.

[0054] In a specific embodiment, such as Figure 14 As shown, the fan blade connection assembly 6 further includes a second connection unit 62, which includes a support shaft 621 and a fixed seat 622. One end of the support shaft 621 is detachably connected to the other end of the cross-flow fan blade 3, and the other end of the support shaft 621 is movably disposed in the fixed seat 622. The fixed seat 622 is fixedly connected to the bottom shell 1. The fixed seat 622 is provided with a second accommodating cavity 6221 for accommodating the support shaft 621.

[0055] One end of the support shaft 621 is detachably connected to the end of the cross-flow fan 3 furthest from the drive component 4, while the other end is axially inserted into the second accommodating cavity 6221 inside the fixed base 622 and can move axially. The fixed base 622 is fixedly connected to the bottom shell 1. The second accommodating cavity 6221 is an axial cavity structure opened inside the fixed base 622, and its size design allows the support shaft 621 to slide within it to a limited extent. The core function of the support shaft 621 is to provide radial support for the non-drive end of the cross-flow fan 3 and bear the operating load, while releasing the constraint on the fan end by axial movement during disassembly. The fixed base 622, as a static support structure, reliably distributes the force transmitted from the support shaft 621 onto the bottom shell 1. The second accommodating cavity 6221, by providing axial movement space, allows the support shaft 621 to retract during disassembly operations, creating space conditions for the removal of the cross-flow fan 3.

[0056] Under normal operating conditions, the support shaft 621 is confined to a fixed position and provides stable support for the cross-flow fan blade 3. When disassembly is required, after releasing the second connecting unit 62, the support shaft 621 can move away from the fan blade along the second receiving cavity 6221, so that its end is completely detached from the connection area of ​​the cross-flow fan blade 3. More specifically, the technical effect of this design is to achieve an organic combination of support function and rapid release, forming a symmetrical cooperation with the first connecting unit 61 at the drive end, jointly ensuring that the constraints at both ends of the cross-flow fan blade 3 can be released synchronously. Its direct effect is that the cross-flow fan blade 3 can maintain a smooth movement trajectory during disassembly, avoiding unilateral jamming, while omitting the cumbersome steps of disassembling the entire bearing housing required in traditional structures, significantly improving the smoothness and reliability of disassembly operations.

[0057] In a specific embodiment, such as Figure 4 and Figure 12 As shown, the connection between the drive shaft 611 and the cross-flow fan blade 3, as well as the connection between the drive shaft 611 and the drive seat 612, are provided with a flat structure 613 for limiting and a fastener 614 for fixing.

[0058] The flat structure 613 is machined and formed on the outer circumferential surface of the connection section between the drive shaft 611 and the cross-flow fan blade 3, and the connection section between the drive shaft 611 and the drive seat 612. It is characterized by a non-circular flat cutting surface. The fastener 614 is usually a screw, which passes through the wall of the cross-flow fan blade 3 or the drive seat 612 and is screwed into the corresponding threaded hole on the drive shaft 611, thereby pressing and fixing the two parts together. Its installation position corresponds to the axial position of the flat structure 613, ensuring that the fastening force is applied to the anti-torsion area where the flat structure 613 is located.

[0059] The core function of the flat structure 613 is to provide circumferential limiting and torque transmission. Its non-circular cross section mates with the corresponding non-circular hole on the cross-flow fan blade 3 or the transmission seat 612, which can effectively prevent relative rotation between the drive shaft 611 and the connecting parts and ensure reliable transmission of drive torque. The core function of the fastener 614 is to provide axial fixing force. The fastener force tightly presses the drive shaft 611, the cross-flow fan blade 3 and the transmission seat 612 together, eliminating axial movement and ensuring the integrity of the connection. At the same time, when disassembly is required, the axial constraint can be released by loosening the fastener 614.

[0060] In the assembled state, the locking force provided by fastener 614 firmly connects the drive shaft 611 to the connected components. At this time, the meshing surface of the flat structure 613 bears the entire working torque, achieving efficient and lossless power transmission. When disassembly is required, simply loosen the fastener 614, and the drive shaft 611 can move axially under the guidance of the flat structure. However, due to the presence of the flat structure 613, there is no relative rotation between the drive shaft 611 and the connected components, maintaining the original phase relationship. More specifically, the technical effect of this fit is to achieve a balance between rapid assembly and disassembly of the connection and high reliability of torque transmission. Users can complete disassembly and reassembly operations without using special tools for angle alignment, greatly reducing the difficulty of operation. At the same time, it avoids the problem of easy slippage or damage to the shaft surface of the set screw in traditional pure round shaft fits, extending the service life of components and improving the convenience of maintenance operations and the accuracy of repeated assembly.

[0061] In a specific embodiment, such as Figure 4 As shown, the flat structure 613 that cooperates with the cross-flow fan blade 3 is provided with a limiting part 6131, which is used to limit the assembly position of the cross-flow fan blade 3 on the drive shaft 611.

[0062] The specific feature of the limiting part 6131 is that it is a specific physical structure formed on the flat structure 613 of the mating section between the drive shaft 611 and the cross-flow fan blade 3. This structure is achieved by changing the cross-sectional shape or depth of the flat structure 613. For example, the flat cutting is partially canceled at a specific position in the axial direction of the drive shaft 611 to restore it to a complete circle, or an annular groove or raised step is machined on the flat structure 613. The axial position of the limiting part 6131 is precisely set so that it corresponds exactly to the design position where the cross-flow fan blade 3 is fully assembled on the drive shaft 611.

[0063] The technical effect of this feature is to provide a clear and insurmountable axial assembly positioning point. When installing the cross-flow fan blade 3, the user only needs to push the fan blade along the drive shaft 611 until its inner hole contacts the limiting part 6131 and cannot move forward any further. At this point, the cross-flow fan blade 3 is exactly in the correct working position. More specifically, this eliminates the difficulty of observing and judging whether the assembly is in place due to limited visibility when the air conditioner is suspended, greatly simplifying the assembly operation. At the same time, it ensures that the relative position of the cross-flow fan blade 3 and the drive shaft 611 remains consistent after each reinstallation, avoiding problems such as fan blade dynamic imbalance, abnormal operating noise, or reduced efficiency caused by assembly errors, thus ensuring the reliability and consistency of product performance. Furthermore, this mechanical hard limit design requires no measurement or adjustment by the user, allowing ordinary users to complete the assembly operation as easily and accurately as professional technicians, greatly improving the maintainability of the product and the user experience.

[0064] In a specific embodiment, the air outlet assembly 5 is rotatably mounted on the bottom shell 1; the air outlet assembly 5 is configured to change the width and orientation of the air outlet by rotation.

[0065] When it is necessary to disassemble the cross-flow fan blade 3, rotating the air outlet assembly 5 opens it to a disassembly state much wider than the normal air outlet width. This enlarged opening provides ample physical space for the radial removal of the cross-flow fan blade 3, thus completely solving the historical problem of being unable to directly remove the fan blade due to a narrow air outlet. During daily operation of the air conditioner, this rotation function allows users to flexibly adjust the air supply angle according to actual needs. For example, when cooling, the airflow can be directed upwards to avoid direct blowing, and when heating, the airflow can be directed downwards to enhance the diffusion of hot air, greatly improving the comfort and user-friendliness of use. Furthermore, this innovative design, which integrates maintenance functions with daily adjustment functions, not only avoids the increased costs and structural complexity caused by adding a separate mechanism for disassembly, but also significantly enhances the overall value and market competitiveness of the product through its multi-functionality.

[0066] In a specific embodiment, such as Figure 7 As shown, the air outlet assembly 5 includes an air duct body 51, a first decorative panel 52 and a second decorative panel 53. The first decorative panel 52 is disposed on the upper part of the air duct body 51, and the second decorative panel 53 is detachably or movably disposed on the bottom of the air duct body 51.

[0067] The duct body 51 forms the core airflow channel structure of the air outlet assembly 5. The first decorative panel 52 is fixedly installed on the upper edge of the duct body 51, usually connected by screws or clips to form a whole, together constituting the upper and side contours of the air outlet. The second decorative panel 53 is set at the bottom of the duct body 51, and its connection method is specially designed to be detachable or movable. For example, it can be connected by clips for easy manual removal or hinged to allow it to be folded up and retracted when needed, thereby changing the bottom shape when necessary. The core function of the duct body 51 is to form and define the boundary of the air outlet, guide the airflow to blow out in a predetermined direction, and at the same time serve as the installation base for the first decorative panel 52 and the second decorative panel 53. The main function of the first decorative panel 52 is to improve the appearance integrity of the air conditioner indoor unit, and to play a dual role of air guiding and decoration when the air outlet assembly 5 is rotated for fan blade removal. The core function of the second decorative panel 53 is to maintain the bottom aesthetics and wind protection during daily operation, and its detachable or movable characteristics can effectively prevent the component from interfering with or colliding with the wall when the air outlet assembly 5 needs to be rotated for fan blade removal.

[0068] When the air conditioner is in normal air supply mode, the first decorative panel 52 and the second decorative panel 53 together with the air duct body 51 form a complete air outlet channel. When it is necessary to remove the cross-flow fan blade 3, the user first needs to remove or move the second decorative panel 53 to remove the bottom obstruction. Then, depending on the specific situation of the installation environment, for some air conditioner designs where the fan blade diameter is relatively small compared to the air outlet, the air outlet assembly 5 can be rotated to open a sufficient width to remove the fan blade. However, in most cases, it is necessary to additionally prop up the air conditioner indoor unit to form a certain angle with the wall to create more operating space. Finally, rotate the air outlet assembly 5 to the fully open state. More specifically, the key technical effect of this combination is that it successfully solves the problem of spatial interference between the bottom of the rotating air outlet assembly 5 and the adjacent wall. Through step-by-step operation, it ensures that the air outlet can be smoothly rotated and opened to the required angle, providing crucial operating space for the removal of the cross-flow fan blade 3. At the same time, this design takes into account both the aesthetic appearance for daily use and the functional needs for special maintenance, achieving a unity of decoration and functionality. This allows users to choose the most suitable operating method according to the specific model characteristics and installation environment, greatly improving the adaptability, feasibility and convenience of the disassembly process.

[0069] In a specific embodiment, such as Figure 5 , Figure 6 as well as Figure 7 As shown, the air outlet assembly 5 is rotatably connected to the bottom shell 1 via rotating shafts 54 disposed on both sides thereon; one of the rotating shafts 54 is provided with a driven gear 541 at its end.

[0070] On the left and right sides of the air duct body 51 of the air outlet assembly 5, there is a coaxial rotating shaft 54. The two rotating shafts 54 are precisely inserted into the corresponding bushings or bearing holes on the bottom shell 1 to form a stable rotation support structure. More specifically, the end of one of the rotating shafts 54 extends beyond its mating surface with the bottom shell 1, and a driven gear 541 is machined or fixedly installed on the extended section. The teeth of the driven gear 541 are exposed in a driveable spatial position.

[0071] In this embodiment, the design of the two rotating shafts 54 ensures that the air outlet assembly 5 is subjected to balanced force and operates smoothly during rotation, avoiding the jamming or shaking problems that may occur with unilateral support. More specifically, the rotating shaft 54 ​​with a driven gear 541 at the end provides a power interface for driving the rotation of the air outlet assembly 5. The driven gear 541 can mesh with a manually operated gear set or a motor-driven drive gear, thereby reliably transmitting the rotational torque to the air outlet assembly 5, allowing the user to control its rotation angle in a labor-saving and precise manner. Furthermore, compared with directly pushing the air outlet assembly 5, this gear drive method is not only easier and less strenuous to operate, but also allows for fine adjustment of the rotation angle. This meets the need to quickly rotate to a large opening position when disassembling the fan blades, and also meets the requirement of fine-tuning the air outlet direction to improve comfort during daily use. At the same time, the self-locking characteristic of the gear transmission helps the air outlet assembly 5 to remain stable at any angle, enhancing the reliability of use and the user experience.

[0072] In a specific embodiment, such as Figure 5 and Figure 6 As shown, a gear set 7 is provided on the bottom shell 1, which meshes with the driven gear 541; an operating part 71 is provided at the end of the gear set 7, and the operating part 71 is exposed outside the bottom shell 1.

[0073] A transmission chain consisting of multiple meshing gears is installed inside the bottom shell 1 or on a specific bracket. The initial end gear of the gear set 7 meshes directly or indirectly with the driven gear 541 at the end of the rotating shaft 54, thereby transmitting motion to the air outlet assembly 5. More specifically, the axially outward extension of the end gear of the gear set 7 constitutes the operating part 71. The operating part 71 is designed to be manually operated by the user, such as a handwheel, a knob, or a shaft head that can be held by a tool. Its position is such that the operating part 71 is exposed to the outside of the air conditioner indoor unit through a hole or opening reserved on the bottom shell 1, so that the user can directly touch and operate it.

[0074] This embodiment utilizes multi-stage transmission of gear set 7 to amplify and convert small manual torque or rotational movements applied by the user to the operating unit 71, thereby easily driving the large air outlet assembly 5 to rotate. More specifically, this design allows users to precisely control the opening angle and direction of the air outlet without using significant force or complex tools, greatly reducing operational difficulty and physical demands. The design of the operating unit 71 being exposed on the bottom shell 1 provides great convenience; when cleaning the fan blades or adjusting the airflow angle, users can intuitively and easily find the operating interface and operate it directly manually without first disassembling any external covers or components of the air conditioner, achieving true speed and convenience. Furthermore, the inherent smoothness and precision of gear transmission ensure that the air outlet assembly 5 can be stably driven to the required angle and reliably maintained, avoiding shaking, abnormal noise, or angle loss problems that may occur due to direct pushing. At the same time, this mechanical transmission method is reliable, low-cost, and maintenance-free.

[0075] In a specific embodiment, the gear set 7 is connected to a drive motor for driving its rotation. The drive motor is connected to the input stage gear of the gear set 7 through its output shaft. The drive motor is fixedly installed inside the bottom shell 1 or on a specific bracket. Its power output is ultimately transmitted to the end gear meshing with the driven gear 541 through the multi-stage transmission of the gear set 7, thereby replacing manual operation and providing an automated power source for the rotation of the air outlet assembly 5.

[0076] This embodiment achieves automated and intelligent control of the rotation operation of the air outlet assembly 5. The drive motor, by receiving electrical signals from the air conditioning control system or the user's remote control device, precisely drives the gear set 7 to rotate, thereby controlling the air outlet assembly 5 to rotate to a predetermined angle. More specifically, this automated drive method eliminates the inconvenience of manual operation by the user. Especially when the air conditioner is installed high or difficult to reach, the user can easily adjust the airflow direction via remote control without climbing, greatly improving ease of use and safety. The motor drive achieves precise and repeatable positioning of the rotation angle, allowing the air outlet to automatically optimize the airflow angle according to different operating modes such as cooling and heating. For example, during cooling, the airflow is directed upwards to avoid people, while during heating, it is directed downwards to promote hot air circulation, significantly enhancing user comfort and energy efficiency.

[0077] In a specific embodiment, baffles are provided on both sides of the bottom shell 1; the baffles are configured to cover the exposed area formed between the air outlet assembly 5 and the bottom shell 1 when the air outlet assembly 5 is in motion.

[0078] On the left and right edges of the bottom shell 1 near the rotation axis 54 of the air outlet assembly 5, there is a baffle of a specific shape that is fixedly installed or integrally formed. The size and contour of the baffle are specially designed so that it can closely fit the dynamically changing triangular or fan-shaped exposed area formed between the air outlet assembly 5 and the main structure of the bottom shell 1 at different rotation angles. More specifically, the baffle is fixed on the non-moving part of the bottom shell 1, and its position is exactly outside the movement trajectory of the air outlet assembly 5. No matter how the air outlet assembly 5 rotates, the baffle can always cover the gaps and holes generated between the bottom shell 1 and the air outlet assembly 5 due to the rotation.

[0079] This design effectively solves the problem of exposed openings in the unit that inevitably occur during the rotation and adjustment of the air outlet assembly 5. More specifically, the baffle's covering function first ensures the airtightness of the internal air ducts and components of the air conditioner, preventing dust and foreign objects from entering the machine through gaps, protecting the cleanliness of the internal mechanisms and avoiding potential operational malfunctions. Second, it maintains the integrity and aesthetics of the air conditioner's appearance, eliminating visual discontinuities and a sense of emptiness caused by functional moving parts, and improving the overall quality and design completion of the product. Furthermore, when the air conditioner is operating, the baffle effectively prevents airflow from short-circuiting and leaking through these exposed gaps, ensuring that all airflow is blown out through the designed air outlets, guaranteeing the stability of air delivery efficiency, air pressure, and air volume, thereby maintaining the air conditioner's cooling and heating performance unaffected by the adjustment of the air outlet angle. In addition, the baffle also serves as a safety protection measure, preventing users' fingers or other objects from accidentally inserting into the moving parts, enhancing the product's safety during use.

[0080] The working principle of the indoor air conditioner unit provided in this embodiment is as follows:

[0081] Under normal air supply conditions, the drive unit 4 starts and transmits torque through its output end to the first connecting unit 61 of the fan blade connecting assembly 6. Specifically, the torque is transmitted through the first receiving cavity 6121 inside the transmission seat 612 to the drive shaft 611, which meshes with it through the flat structure 613 and is locked by the fastener 614. The drive shaft 611 then reliably transmits power to the drive end of the cross-flow fan blade 3. At the same time, the non-drive end of the cross-flow fan blade 3 is supported in the second receiving cavity 6221 of the fixed seat 622 through the support shaft 621 of the second connecting unit 62, thereby ensuring that the fan blade is level. The air outlet assembly 5, which is in normal air outlet state, is blown out through the air duct 2 by the air duct 2. At this time, the air duct body 51 of the air outlet assembly 5 together with the first decorative panel 52 and the second decorative panel 53 form a complete air duct. The user can manually operate the exposed operating part 71 to drive the gear set 7, which in turn drives the driven gear 541 to make the air outlet assembly 5 rotate around the rotating shaft 54 ​​to adjust the air outlet direction and width. Alternatively, when equipped with a drive motor, the angle adjustment can be automatically completed by program control. During this process, the baffles on both sides of the bottom shell 1 always cover the gaps generated by the rotation to maintain aesthetics and sealing.

[0082] When the cross-flow fan blade 3 needs cleaning, the working process switches to disassembly mode. The user first loosens the fasteners 614 on the first connecting unit 61 and the second connecting unit 62, allowing the drive shaft 611 and the support shaft 621 to move axially within the first accommodating cavity 6121 and the second accommodating cavity 6221, thereby disengaging from the two ends of the cross-flow fan blade 3. Then, the user removes the second decorative plate 53 at the bottom of the air outlet assembly 5 to avoid interference with the wall, and decides whether to slightly prop up the indoor unit according to the installation space. Then, the user drives the air outlet assembly 5 to rotate upward to the maximum opening state through the operating part 71 and the gear set 7, thereby opening an operating window at the air outlet that is much larger than the diameter of the cross-flow fan blade 3. Finally, the user can easily remove the cross-flow fan blade 3, which has been completely released from restraint, axially for cleaning through this window. After cleaning, the components can be reassembled in reverse order. The limiting part 6131 on the drive shaft 611 ensures that the cross-flow fan blade 3 is accurately reset to the preset working position during assembly. The entire process perfectly achieves the core objective of cleaning the fan blades without disassembling core components such as the evaporator, while also taking into account the adjustment function for daily air supply comfort.

[0083] Example 2

[0084] This embodiment provides an air conditioner, which includes the indoor unit of the air conditioner described in Embodiment 1.

[0085] The air conditioner provided in this embodiment, by adopting the indoor unit of the air conditioner in Embodiment 1, achieves a dual improvement in both ease of maintenance and user comfort. Users can directly remove the cross-flow fan blades for cleaning without disassembling complex parts, and the air outlet angle can be flexibly adjusted to meet the needs of different scenarios, significantly improving the product's practicality and user experience.

[0086] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0087] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An indoor unit of an air conditioner, comprising a bottom shell, an air duct, a cross-flow fan blade and a driving member arranged in the bottom shell, characterized in that, The indoor unit of the air conditioner also includes an air outlet assembly and a fan blade connection assembly. The air outlet assembly is movably mounted on the bottom shell and has an air outlet state and a detachable state through which the cross-flow fan blade can pass. The fan blade connection assembly includes a first connection unit, one end of which is detachably connected to the cross-flow fan blade, and the other end of which is connected to the drive component. The first connection unit has a first state that drives the cross-flow fan blade and a second state that allows the cross-flow fan blade to be removed. When the first connection unit switches to the second state and the air outlet assembly is in the detachable state, the cross-flow fan blade can be removed through the air outlet.

2. The air conditioner indoor unit according to claim 1, characterized in that, The first connecting unit includes a drive shaft and a drive seat. One end of the drive shaft is detachably connected to the cross-flow fan blade, and the other end is movably disposed in the drive seat. The drive seat is connected to the output end of the drive member. The drive seat is provided with a first accommodating cavity for accommodating the drive shaft.

3. The air conditioner indoor unit according to claim 2, characterized in that, The fan blade connection assembly further includes a second connection unit, which includes a support shaft and a fixed seat. One end of the support shaft is detachably connected to the other end of the cross-flow fan blade, and the other end of the support shaft is movably disposed in the fixed seat. The fixed seat is fixedly connected to the bottom shell. The fixed seat is provided with a second accommodating cavity for accommodating the support shaft.

4. The air conditioner indoor unit according to claim 3, characterized in that, The connection between the drive shaft and the cross-flow fan blade, as well as the connection between the drive shaft and the drive base, are provided with a flat structure for limiting movement and fasteners for fixing.

5. The air conditioner indoor unit according to claim 4, wherein The flat structure that mates with the cross-flow fan blades on the drive shaft is provided with a limiting part to limit the assembly position of the cross-flow fan blades on the drive shaft.

6. The air conditioner indoor unit according to claim 1, wherein The air outlet assembly is rotatably mounted on the bottom shell; the air outlet assembly is configured to change the width and orientation of the air outlet by rotation.

7. The indoor unit of the air conditioner according to claim 6, characterized in that, The air outlet assembly includes an air duct body, a first decorative panel, and a second decorative panel. The first decorative panel is disposed on the upper part of the air duct body, and the second decorative panel is detachably or movably disposed on the bottom of the air duct body.

8. The air conditioner indoor unit according to claim 7, characterized in that, The air outlet assembly is rotatably connected to the bottom shell via rotating shafts located on both sides of it; one of the rotating shafts has a driven gear at its end.

9. The air conditioner indoor unit according to claim 8, characterized in that, The bottom shell is provided with a gear set that meshes with the driven gear; the end of the gear set is provided with an operating part, which is exposed outside the bottom shell.

10. The air conditioner indoor unit according to claim 9, characterized in that, The gear set is connected to a drive motor for driving its rotation.

11. The air conditioner indoor unit according to claim 1, characterized in that, The bottom shell has baffles on both sides; the baffles are configured to cover the exposed area formed between the air outlet assembly and the bottom shell when the air outlet assembly is in motion.

12. An air conditioner characterized by comprising: The air conditioner includes the indoor unit of the air conditioner as described in any one of claims 1-11.

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