An indoor unit

Abstract

This application specifically discloses an indoor unit, comprising: an air guide plate assembly, including: a first air guide plate; a second air guide plate; a motor; a linkage mechanism, including: a first crank with a sliding groove; a second crank; a connecting rod, the first end of which has a first connecting portion that can slide and rotate within the sliding groove, and the second end of which is rotatably connected to the second crank; and a fixed box, in which the first crank, the second crank, and the connecting rod are all disposed; wherein, the inner wall of the fixed box is provided with: a limiting member that can elastically deform; when the second air guide plate is in the closed state, the limiting member abuts against the second crank to apply a blocking force to the second crank to prevent it from rotating; when the connecting rod moves, the connecting rod can push the second crank so that the second crank overcomes the blocking force and drives the second air guide plate to rotate. Using this technical solution, the second air guide plate can be tightly closed when in the closed state.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and more particularly to an indoor unit. Background Technology

[0002] An air conditioner, also known as an air conditioner, is a device that uses artificial means to regulate and control parameters such as temperature, humidity, and airflow of the air inside a building or structure.

[0003] Currently, more and more people are choosing to install air conditioners indoors to regulate the temperature of the indoor air. Ceiling-mounted air conditioners are one type of air conditioner, and recessed ceiling-mounted units are mainly used in large spaces such as offices, classrooms, and shopping malls. They have the advantages of small footprint and good cooling / heating performance, making them very popular with users.

[0004] In the existing technology, the two air guide vanes of the indoor unit are driven by a motor and a crank-connecting rod mechanism. When the large air guide vane is closed, it is kept closed by the self-locking force of the motor. However, the small air guide vane is not kept closed by the self-locking force of the motor. Instead, it is only kept closed by the interference fit between the crank and the connecting rod to constrain the position of the connecting rod and thus the position of the small air guide vane. If there is an error in the assembly between the crank and the connecting rod, the small air guide vane will open at a certain angle under the action of gravity, resulting in the small air guide vane not being able to close tightly. Utility Model Content

[0005] This application discloses an indoor unit that enables the second air guide plate to close tightly when in the closed state.

[0006] To achieve the above objectives, some embodiments of this application provide an indoor unit, including: a housing, with a housing cavity formed within the housing; the housing including: a panel, with an air inlet and an air outlet disposed on the panel; an air guide plate assembly disposed at the air outlet, the air guide plate assembly including: a first air guide plate, rotatably disposed on the side of the air outlet near the air inlet; a second air guide plate, rotatably disposed on the side of the air outlet away from the air inlet; a motor, the output shaft of the motor being drively connected to the first air guide plate to drive the first air guide plate to rotate; and a linkage mechanism. The linkage mechanism includes: a first crank, which is connected to the output shaft of the motor, and the motor can drive the first crank and the first air guide plate to rotate synchronously around a first rotation axis. The first crank is provided with a sliding groove; a second crank, which is connected to the second air guide plate, and the second crank and the second air guide plate can rotate synchronously around a second rotation axis; and a connecting rod, the first end of which can slide and rotate within the sliding groove, and the second end of which is rotatably connected to the second crank; the sliding groove includes: a first groove segment, through which the motor drives the first air guide plate to open from a closed state to a second groove segment. During the rotation of the first crank around the first rotation axis at a certain angle, the first end of the connecting rod slides relative to the first groove section, causing the connecting rod to remain stationary relative to the housing; In the second groove section, which communicates with the first groove section, during the rotation of the first crank around the first rotation axis by the motor driving the first air guide plate from a first angle to a second angle, the first end of the connecting rod slides relative to the first groove section, causing the first end of the connecting rod to move towards the side closer to the second air guide plate. This movement of the connecting rod causes the second crank to rotate around the second rotation axis. The second air guide plate is opened from the closed state to the fourth angle by the movement of the motor; a fixed box is disposed in the housing cavity, and the first crank, the second crank, and the connecting rod are all disposed in the fixed box; wherein, the inner wall of the fixed box is provided with a limiting member, which can elastically deform. When the second air guide plate is in the closed state, the limiting member abuts against the second crank to apply a blocking force to the second crank to prevent the second crank from rotating. When the connecting rod moves, the connecting rod can push the second crank so that the second crank overcomes the blocking force and drives the second air guide plate to rotate.

[0007] Thus, by incorporating an elastically deformable limiting component on the inner wall of the fixed box, the second crank can abut against the limiting component when the second air guide plate is closed, preventing the second crank from rotating. This prevents the second air guide plate from opening at a certain angle under gravity, ensuring a tight closure when closed. Furthermore, when the second air guide plate needs to be opened, the elastic deformation of the limiting component causes the connecting rod to push the second crank, deforming it and overcoming the limiting component's obstruction. This allows the second air guide plate to rotate normally, preventing the second crank from rotating when closed while ensuring it can open normally when open.

[0008] In some embodiments of this application, the limiting member includes: an elastic support portion disposed on the inner wall of the fixing box and capable of elastically deforming in a direction away from or close to the second crank; and a first protrusion disposed on the surface of the elastic support portion facing the second crank, wherein when the second air guide plate is in the closed state, the first protrusion abuts against the second crank.

[0009] Thus, when the second air guide plate is closed, the limiting component abuts against the second crank via the elastic support and the first protrusion. This abutment method is a flexible contact, which, compared to rigid contact, effectively reduces the collision and friction forces between the second crank and the limiting component, thereby reducing wear on the component in the closed state and extending its service life. Furthermore, the elastic deformation capability of the elastic support allows it to adapt to minor deviations in the second crank during installation and slight deformations that may occur during long-term use. Even with some positional deviation or deformation, the elastic support can still ensure good contact between the first protrusion and the second crank through its own deformation, ensuring the limiting component functions properly. This enhances the reliability and stability of the entire structure and reduces the risk of failure due to component positional deviation or deformation.

[0010] In some embodiments of this application, the elastic support includes: a main body made of an elastic material, a first protrusion disposed on the main body, and a gap between the main body and the inner wall of the fixing box; a first connecting part connected between a first end of the main body and the inner wall of the fixing box; and a second connecting part connected between a second end of the main body and the inner wall of the fixing box.

[0011] This structure allows the main body to undergo elastic deformation more easily, making the second air guide plate open more smoothly. Furthermore, the first and second connecting parts connect the two ends of the main body to the inner wall of the fixing box, respectively. This two-end connection method makes the elastic support part more firmly installed on the inner wall of the fixing box, preventing overall displacement or shaking under external force, further improving the stability and reliability of the limiting component.

[0012] In some embodiments of this application, the main body is a hollow structure.

[0013] Thus, compared to a solid structure, the hollow structure can significantly reduce the amount of material used while maintaining a certain structural strength. This not only reduces production costs but also makes the entire limiting component lighter. Furthermore, the hollow structure allows for greater deformation space in the main body during elastic deformation, enabling it to withstand greater external forces without permanent deformation. This enhances the elasticity and toughness of the limiting component, allowing it to better adapt to the movement of the second crank during long-term use. In addition, the hollow structure allows the main body to undergo elastic deformation more quickly under external forces and rapidly return to its original shape after the force disappears. This rapid elastic response helps improve the movement accuracy and stability of the air guide plate assembly.

[0014] In some embodiments of this application, the first protrusion includes an abutting surface, which is the surface on which the second crank abuts against the first protrusion when the second air guide plate is in the closed state. When the second air guide plate is in the closed state, the end of the abutting surface away from the main body is inclined away from the side away from the second crank relative to the end of the abutting surface close to the main body.

[0015] Thus, when the second air guide plate changes from the closed state to the open state, the inclined contact surface can better adapt to the movement trajectory of the second crank during the closing and opening process, providing a smooth transition path for the second crank, reducing sudden impact and jamming, and making the movement of the second air guide plate more stable and smooth.

[0016] In some embodiments of this application, the second crank is provided with a second protrusion, which is located at one end of the second crank near the limiting member. When the second air guide plate is in the closed state, the second protrusion abuts against the limiting member.

[0017] In this way, the second protrusion concentrates the contact force between the second crank and the limiting member, making the force-bearing area smaller and more concentrated. Therefore, under the same contact force, the pressure in the contact area is greater, which is more conducive to the generation of friction and thus improves the limiting effect. At the same time, this design also avoids the dispersion of force on the second crank, reducing unnecessary stress on other parts of the second crank and lowering the risk of wear. Furthermore, by abutting against the limiting member, the contact and friction are concentrated in a specific area, rather than the entire surface of the second crank, which reduces wear on other parts of the second crank and the limiting member, extending the service life of the components.

[0018] In some embodiments of this application, the outer surface of the second protrusion is an arc surface.

[0019] Thus, the outer surface of the second protrusion, being an arc surface, has a lower coefficient of friction compared to a flat or angular structure when in contact with the limiting component. During the closing and opening of the second air guide plate, the relative movement between the second protrusion and the limiting component is smoother, reducing friction. Furthermore, the arc surface allows for a more uniform pressure distribution on the contact surface, preventing concentrated wear caused by excessive local pressure and helping to extend the service life of the limiting component and the second protrusion.

[0020] In some embodiments of this application, the motor drives the first air guide plate to open from the second angle to the third angle, and during the process of the first crank rotating around the first rotation axis, the first end of the connecting rod rotates relative to itself within the second groove segment around its own center, and the first end of the connecting rod rotates synchronously with the first crank around the first rotation axis. The rotation of the connecting rod drives the second crank to rotate around the second rotation axis, and the rotation of the second crank drives the second air guide plate to open from the fourth angle to the fifth angle.

[0021] This indicates that the indoor unit's air deflector control has greater adjustment capabilities. By further opening the first air deflector, the second air deflector continues to open with an increased opening angle, allowing for more precise multi-level and detailed adjustments to the airflow direction based on indoor environmental needs and air conditioning operating status. This better meets the diverse air conditioning requirements under different indoor environments.

[0022] In some embodiments of this application, during the process of the first air guide plate opening from the first angle to the third angle and the second air guide plate opening from the closed state to the fifth angle, the included angle between the first air guide plate and the second air guide plate gradually decreases.

[0023] In this way, the outlet area of ​​the airflow is reduced, and the airflow velocity is increased, which allows the airflow to be directed to the target area more concentratedly, improving air delivery efficiency. Furthermore, as the angle between the first and second air guide plates decreases, the airflow is guided more concentratedly, further increasing the air delivery distance and ensuring that hot and cold air quickly reaches every corner of the room, improving user comfort.

[0024] In some embodiments of this application, the linkage mechanism further includes a transmission assembly disposed between the output shaft of the motor and the first crank. The transmission assembly includes: a driving gear connected to the output shaft of the motor; and a driven gear fixed relative to the first crank. The driving gear meshes with the driven gear, and the pitch circle diameter of the driving gear is smaller than that of the driven gear.

[0025] Thus, because the pitch circle diameter of the driving gear is smaller than that of the driven gear, when the motor outputs a certain torque and speed, the torque output by the driving and driven gears can be increased, thereby increasing the torque transmitted to the first air guide plate through the driving and driven gears. Therefore, when selecting a motor, a motor with lower torque can be chosen. By increasing the motor's torque through the driving and driven gears, the normal rotation of the first and second air guide plates can be ensured. Choosing a motor with lower torque reduces motor costs, thereby lowering the manufacturing cost of the indoor unit. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the indoor unit disclosed in an embodiment of this application from one perspective;

[0028] Figure 2 This is a front view of an indoor unit disclosed in one embodiment of this application;

[0029] Figure 3 This is a side view of an indoor unit disclosed in one embodiment of this application;

[0030] Figure 4 for Figure 3 Sectional view of AA;

[0031] Figure 5 This is a top view of the air guide plate assembly disclosed in the embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the air guide plate assembly disclosed in the embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the structure of the first air guide plate disclosed in the embodiment of this application when it is in the closed state;

[0034] Figure 8 This is a schematic diagram of the structure of the first air guide plate disclosed in the embodiment of this application when it is at the first angle;

[0035] Figure 9 This is a partial schematic diagram of the interior of the fixing box disclosed in an embodiment of this application;

[0036] Figure 10 This is a schematic diagram of the structure of the fixing box disclosed in an embodiment of this application from one perspective;

[0037] Figure 11 for Figure 10 A magnified view of a section at point A in the middle;

[0038] Figure 12 This is a schematic diagram of the structure of the second crank disclosed in an embodiment of this application;

[0039] Figure 13 This is a schematic diagram of the structure of the first air guide plate disclosed in the embodiment of this application when it is at the second angle;

[0040] Figure 14 This is a schematic diagram of the structure of the first air guide plate disclosed in the embodiment of this application when it is at the third angle;

[0041] Figure 15 This is a schematic diagram of the transmission assembly disclosed in the embodiments of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100 - Indoor unit;

[0044] 1-Housing; 1a-Housing cavity; 11-Face panel; 11a-Air inlet; 11b-Air outlet;

[0045] 2-Heat exchanger;

[0046] 3- Fan;

[0047] 4-Air guide plate assembly; 41-First air guide plate; 42-Second air guide plate; 43-Motor; 44-Linkage mechanism; 441-First crank; 4411-Sliding groove; 44111-First groove segment; 44112-Second groove segment; 442-Second crank; 4421-Second protrusion; 443-Connecting rod; 45-Fixing box; 451-Limiting member; 4511-Elastic support part; 45111-Main body part; 45112-First connecting part; 45113-Second connecting part; 4512-First protrusion; 4512a-Abutment surface; 46-Transmission assembly; 461-Driving gear; 462-Driven gear;

[0048] O1 - First rotation axis; O2 - Second rotation axis. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0051] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0052] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0053] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0054] As people increasingly pursue higher quality indoor environments, air conditioning has become an essential device to meet these needs. Air conditioning, or air conditioner, uses artificial means to regulate and control parameters such as temperature, humidity, and airflow within a building or structure, thereby adjusting indoor air parameters and bringing convenience to daily life.

[0055] Nowadays, with improved living standards and changing aesthetic values, people not only value the basic performance of air conditioners, but also pay attention to their appearance and coordination with interior decoration styles, cost-effectiveness, and aesthetics after installation.

[0056] Ceiling-mounted air conditioners, a type of air conditioner, are typically installed within the ceiling, with the indoor unit concealed and only the supply and return air vents visible in the room. This concealed installation avoids the space-consuming problem of traditional air conditioners, maintaining the overall aesthetics of the interior design. Suitable for various apartment layouts and decorating styles, whether small or large, modern minimalist or classic Chinese, ceiling-mounted units blend seamlessly. Furthermore, they feature multi-directional airflow, allowing for air delivery at different angles to meet the varying temperature and airflow needs of people in different locations. Ceiling-mounted units are also easy to install and maintain, requiring no complex procedures for repairs. Therefore, due to their aesthetic appeal, practicality, and convenience, ceiling-mounted units are becoming an increasingly popular choice for air conditioners.

[0057] The indoor unit is equipped with a fan and a heat exchanger. The fan rotates to draw air from outside the unit into the indoor unit through the air inlet. After airflow from the fan and heat exchange in the heat exchanger, the air is then discharged into the room through the air outlet. In related technologies, a single motor drives two air guide vanes. The motor directly drives one air guide vane and indirectly drives the other. The air guide vane driven directly by the motor achieves a tight seal when closed through the self-locking force of the motor stopping. However, the air guide vane driven indirectly by the motor achieves a tight seal in the closed state through an interference fit with a linkage mechanism. If the fit is not tight, the air guide vane will open slightly under gravity, resulting in an incomplete closure.

[0058] Based on this, the present application provides an indoor unit that can achieve the asynchronous rotation of two air guide vanes driven by one motor while ensuring that the air guide vanes are tightly closed.

[0059] The present technical solution will be further described below with reference to the embodiments and accompanying drawings.

[0060] Please see Figure 1 This application provides an indoor unit 100, an important component of an air conditioner. The indoor unit 100 performs an air conditioning cycle using an air supply system and a related heat exchange system. This cycle encompasses a series of processes, including air intake, heat exchange, airflow propulsion, and temperature regulation, thereby providing a suitable temperature and air quality for the indoor space. A strong airflow is generated by the air supply system to draw indoor air into the ducted air conditioner. The intake air then flows through the heat exchange system to absorb heat from the air, achieving a cooling effect, and transferring the heat to the refrigerant through the heat exchange process. The cooled air, after heat exchange, is then pushed back into the indoor space by the air supply system, forming a cycle. Through this cycle, the indoor space temperature is regulated, and the indoor air quality is improved through airflow circulation, providing users with a comfortable and healthy indoor environment. In this embodiment, a ceiling-mounted unit 100 is used as an example; the indoor unit 100 of the ceiling-mounted unit is mounted on the ceiling of the room.

[0061] See Figure 1 The indoor unit 100 includes a housing 1, and a housing cavity 1a is formed inside the housing 1 (e.g., Figure 4 (As shown), it is used to house various components inside the indoor unit 100.

[0062] The housing 1 includes a top plate for mounting the indoor unit 100 on the ceiling of the room.

[0063] See Figures 1 to 3 The casing 1 also includes a panel 11, which is disposed opposite to the top panel. The panel 11 is provided with an air inlet 11a and an air outlet 11b. The air inlet 11a is used to guide airflow into the interior of the casing 1, and the air outlet 11b is used to guide airflow into the room. In this embodiment, as... Figure 1 As shown, the air outlet 11b is arranged around the air inlet 11a, that is, the air inlet 11a is in the center of the panel 11, and the air outlet 11b is around the air inlet 11a.

[0064] It should be noted that the air outlet 11b can also be arranged in any direction with the air inlet 11a, and this embodiment does not make specific limitations on this.

[0065] like Figure 4As shown, the indoor unit 100 also includes a heat exchanger 2, which is disposed within the housing cavity 1a. The heat exchanger 2 is used to exchange heat with the flowing air. It utilizes the characteristic that liquid low-temperature refrigerant easily evaporates under low pressure, absorbing heat from the cooled medium to lower the temperature of the surrounding air, thus achieving a cooling effect. The cooled air, after passing through the heat exchanger 2, is returned to the room through the air supply system, providing a comfortable indoor environment. Especially in the hot summer, the cooling effect of the heat exchanger 2 can significantly reduce the indoor temperature and improve people's perceived comfort.

[0066] The indoor unit 100 also includes a fan 3, which is disposed within the housing cavity 1a. The fan 3 is used to draw airflow into the housing 1 from the air inlet 11a and blow the airflow, after heat exchange in the heat exchanger 2, out from the air outlet 11b. The fan 3 can introduce airflow into the interior of the housing 1, and after the airflow passes through the heat exchanger 2 for heat exchange, the fan 3 then returns the heat-exchanged airflow to the room.

[0067] like Figure 3 As shown, the indoor unit 100 also includes an air guide plate assembly 4, which is disposed at the air outlet 11b and is used to guide the air blown out of the air outlet 11b.

[0068] See Figures 4 to 7 The air guide plate assembly 4 includes a first air guide plate 41, which is rotatably disposed on the side of the air outlet 11b near the air inlet 11a.

[0069] The air guide plate assembly 4 also includes a second air guide plate 42, which is rotatably disposed on the side of the air outlet 11b away from the air inlet 11a.

[0070] The air guide plate assembly 4 also includes a motor 43, the output shaft of which is connected to the first air guide plate 41 to drive the first air guide plate 41 to rotate.

[0071] It should be noted that the transmission connection between the output shaft of the motor 43 and the first air guide plate 41 means that the output shaft of the motor 43 can be directly connected to the first air guide plate 41, or the output shaft of the motor 43 can be indirectly connected to the first air guide plate 41 through other components. As long as the rotational torque of the output shaft of the motor 43 can be transmitted to the first air guide plate 41, this embodiment does not make specific limitations on this.

[0072] like Figure 5 and Figure 6As shown, the air guide plate assembly 4 also includes a linkage mechanism 44, which includes a first crank 441. The first crank 441 is connected to the output shaft of the motor 43. The motor 43 can drive the first crank 441 and the first air guide plate 41 to rotate synchronously around the first rotation axis O1. The first crank 441 is provided with a sliding groove 4411.

[0073] It should be noted that the transmission connection between the first crank 441 and the output shaft of the motor 43 means that the output shaft of the motor 43 can be directly connected to the first crank 441, or the output shaft of the motor 43 can be indirectly connected to the first crank 441 through other components. As long as the rotational torque of the output shaft of the motor 43 can be transmitted to the first crank 441, this embodiment does not make specific limitations on this.

[0074] The linkage mechanism 44 also includes a second crank 442, which is connected to the second air guide plate 42. The second crank 442 and the second air guide plate 42 can rotate synchronously around the second rotation axis O2.

[0075] The linkage mechanism 44 also includes a connecting rod 443, the first end of which can slide and rotate within the sliding groove 4411, and the second end of which is rotatably connected to the second crank 442.

[0076] like Figure 7 and Figure 8 As shown, the sliding groove 4411 includes a first groove segment 44111. During the process of the motor 43 driving the first air guide plate 41 to open from the closed state to the first angle and the first crank 441 rotating around the first rotation axis O1, the first end of the connecting rod 443 slides relative to the first groove segment 44111, so that the connecting rod 443 remains stationary relative to the housing 1.

[0077] like Figure 8 and Figure 13 As shown, the sliding groove 4411 also includes a second groove segment 44112, which is connected to the first groove segment 44111. During the process of the motor 43 driving the first air guide plate 41 to open from the first angle to the second angle and the first crank 441 rotating around the first rotation axis O1, the first end of the connecting rod 443 slides relative to the second groove segment 44112, and causes the first end of the connecting rod 443 to move towards the side closer to the second air guide plate 42. The movement of the connecting rod 443 drives the second crank 442 to rotate around the second rotation axis O2. The rotation of the second crank 442 drives the second air guide plate 42 to open from the closed state to the fourth angle.

[0078] In this way, the asynchronous control of the first air guide plate 41 and the second air guide plate 42 is achieved by using a single motor 43. This satisfies the air delivery effect of the first air guide plate 41 and the second air guide plate 42 under different scenarios, while reducing the number of motors required. This avoids the complex installation and layout of multiple motors 43 and their corresponding drive systems, simplifies the internal structure of the indoor unit 100, and reduces the procurement cost of production materials, thus effectively controlling the overall production cost of the indoor unit and making it more price-competitive in the market.

[0079] like Figure 6 and Figure 9 As shown, the linkage mechanism 44 also includes a fixed box 45, which is disposed in the housing cavity 1a. The first crank 441, the second crank 442 and the connecting rod 443 are all disposed in the fixed box 45.

[0080] Among them, such as Figure 9 As shown, the inner wall of the fixed box 45 is provided with a limiting member 451. The limiting member 451 can deform. When the second air guide plate 42 is in the closed state, the limiting member 451 abuts against the second crank 442 to apply a blocking force to the second crank 442. When the connecting rod 443 moves, the connecting rod 443 can push the second crank 442 so that the second crank 442 overcomes the blocking force and drives the second air guide plate 42 to rotate.

[0081] In the related technology, the first air guide plate 41 is directly driven by the motor 43. The operation of the motor 43 directly affects the state of the first air guide plate 41. When the first air guide plate 41 is in the closed state, the motor 43 stops rotating, and the first air guide plate 41 remains tightly closed under the self-locking force of the motor 43. The second air guide plate 42 is driven by the linkage mechanism 44. In the closed state, the second air guide plate 42 is closed by the interference fit between the first end of the linkage 443 and the sliding groove 4411. However, this requires high precision in the assembly of the linkage 443 and the sliding groove 4411. If there is a deviation in the assembly precision, the second air guide plate 42 will open at a certain angle under the action of gravity, resulting in a gap in the second air guide plate 42 and making it not tightly closed.

[0082] In this embodiment, by providing an elastically deformable limiting member 451 on the inner wall of the fixed box 45, the second crank 442 can abut against the limiting member 451 when the second air guide plate 42 is in the closed state, preventing the second crank 442 from rotating. This prevents the second air guide plate 42 from opening at a certain angle under gravity, ensuring that the second air guide plate 42 is tightly closed when closed. Furthermore, when the second air guide plate 42 needs to be opened, due to the elastic deformation of the limiting member 451, the connecting rod 443 pushes the second crank 442, causing the second crank 442 to compress and deform the limiting member 451. This overcomes the blocking force of the limiting member 451 and allows the second air guide plate 42 to rotate normally. This ensures that while preventing the second crank 442 from rotating when the second air guide plate 42 is closed, the second air guide plate 42 can also be opened normally when it is open.

[0083] In some embodiments, such as Figure 10 and Figure 11 As shown, the limiting member 451 includes an elastic support portion 4511, which is disposed on the inner wall of the fixing box 45 and can elastically deform in a direction away from or close to the second crank 442.

[0084] The limiting member 451 also includes a first protrusion 4512, which is disposed on the surface of the elastic support 4511 facing the second crank 442. When the second air guide plate 42 is in the closed state, the first protrusion 4512 abuts against the second crank 442.

[0085] When the second air guide plate 42 is closed, the limiting member 451 abuts against the second crank 442 through the elastic support portion 4511 and the first protrusion 4512. This abutment method is a flexible contact, which, compared with rigid contact, can effectively reduce the collision force and friction between the second crank 442 and the limiting member 451, thereby reducing the wear of the component in the closed state and extending the service life of the component. Furthermore, the elastic deformation capability of the elastic support portion 4511 allows it to adapt to minor deviations in the installation process of the second crank 442 and slight deformations that may occur during long-term use. Even with a certain degree of positional deviation or deformation, the elastic support portion 4511 can still ensure good contact between the first protrusion 4512 and the second crank 442 through its own deformation, ensuring that the limiting member 451 can function properly, enhancing the reliability and stability of the entire structure, and reducing the risk of failure due to component positional deviation or deformation.

[0086] In addition, when the second air guide plate 42 is subjected to external impact during opening or closing, the elastic support part 4511 can play a buffering role, absorb some of the impact energy, thereby reducing the impact of the impact on the second crank 442, preventing the component from being damaged due to excessive impact, and improving the durability and service life of the component.

[0087] In some embodiments, such as Figure 11 As shown, the elastic support part 4511 includes a main body part 45111, which is made of an elastic material. A first protrusion 4512 is disposed on the main body part 45111, and there is a gap between the main body part 45111 and the inner wall of the fixing box 45.

[0088] The elastic support portion 4511 also includes a first connecting portion 45112, which is connected between the first end of the main body portion 45111 and the inner wall of the fixing box 45.

[0089] The elastic support portion 4511 also includes a second connecting portion 45113, which is connected between the second end of the main body portion 45111 and the inner wall of the fixing box 45.

[0090] If the main body 45111 of the elastic support 4511 is connected to the inner wall of the fixed box 45 everywhere, it means that the main body 45111 can only rely on the elasticity of its own material to undergo elastic deformation. However, in this embodiment, the two ends of the main body 45111 are connected to the inner wall of the fixed box 45 through the first connecting part 45112 and the second connecting part 45113. This means that the two ends of the main body 45111 are connected to the inner wall of the fixed box 45, and there is a gap between the main body 45111 and the inner wall of the fixed box 45. This structure makes it easier for the main body 45111 to undergo elastic deformation, making the second air guide plate 42 operate more smoothly when it is opened. Furthermore, the first connecting part 45112 and the second connecting part 45113 respectively connect the two ends of the main body part 45111 to the inner wall of the fixed box 45. This two-end connection method makes the elastic support part 4511 more firmly installed on the inner wall of the fixed box 45, and will not cause overall displacement or shaking when subjected to external force, further improving the stability and reliability of the limiting part 451.

[0091] In some embodiments, the main body 45111 has a hollow structure. Compared to a solid structure, a hollow structure can significantly reduce the amount of material used while ensuring a certain structural strength. This not only reduces production costs but also makes the entire limiting member 451 lighter. Furthermore, the hollow structure allows the main body 45111 to have a larger deformation space during elastic deformation, thus being able to withstand greater external forces without permanent deformation. This enhances the elasticity and toughness of the limiting member, enabling it to better adapt to the movement of the second crank 442 during long-term use. In addition, the hollow structure allows the main body 45111 to generate elastic deformation more quickly when subjected to external forces and to rapidly return to its original shape after the external force disappears. This rapid elastic response helps improve the movement accuracy and stability of the air guide plate assembly 4. The hollow structure can be achieved through processes such as injection molding, which are relatively simple to manufacture and have high production efficiency. This helps reduce production costs and improve the market competitiveness of the product.

[0092] It should be noted that the material of the main body 45111 can be rubber, polyurethane, silicone rubber or other elastic materials, and this embodiment does not specifically limit it.

[0093] In some embodiments, such as Figure 11 As shown, the first protrusion 4512 includes an abutment surface 4512a, which is the surface on which the second crank 442 abuts against the first protrusion 4512 when the second air guide plate 42 is in the closed state. When the second air guide plate 42 is in the closed state, the end of the abutment surface 4512a away from the main body 45111 is inclined to the side away from the second crank 442 relative to the end of the abutment surface 4512a close to the main body 45111.

[0094] If the contact surface 4512a is vertically downward, it means that after the second crank 442 contacts the first protrusion 4512, the contact direction between the second crank 442 and the contact surface 4512a is the same as the rotation direction of the second crank 442 when the second air guide plate 42 is opened. This will cause the second crank 442 to be blocked by the contact surface 4512a, which may prevent the second air guide plate 42 from opening normally.

[0095] When the second air guide plate 42 changes from the closed state to the open state, the inclined contact surface 4512a can better adapt to the movement trajectory of the second crank 442 during the closing and opening process, providing a smooth transition path for the second crank 442, reducing sudden impact and jamming, and making the movement of the second air guide plate 42 more stable and smooth.

[0096] It should be noted that the first protrusion 4512 and the elastic support 4511 can be integrally formed or they can be formed separately and then connected together. This embodiment does not limit this.

[0097] In some embodiments, combined with Figure 11 and Figure 12 The second crank 442 is provided with a second protrusion 4421, which is located at one end of the second crank 442 near the limiting member 451. When the second air guide plate 42 is in the closed state, the second protrusion 4421 abuts against the limiting member 451.

[0098] The second protrusion 4421 concentrates the contact force between the second crank 442 and the limiting member 451, making the force-bearing area smaller and more concentrated. This results in greater pressure in the contact area under the same contact force, which is more conducive to the generation of friction and thus improves the limiting effect. At the same time, this design avoids the dispersion of force on the second crank 442, reducing unnecessary stress on other parts of the second crank 442 and lowering the risk of wear. Furthermore, the contact and friction between the second protrusion 4421 and the limiting member 451 concentrate the contact and friction in a specific area, rather than the entire surface of the second crank 442. This reduces wear on other parts of the second crank 442 and the limiting member 451, extending the service life of the components.

[0099] In some embodiments, such as Figure 12 As shown, the outer surface of the second protrusion 4421 is an arc surface. Compared to a flat or angular structure, the arc surface of the second protrusion 4421 results in a lower coefficient of friction when in contact with the limiting member 451. During the closing and opening of the second air guide plate 42, the relative movement between the second protrusion 4421 and the limiting member 451 is smoother, reducing friction. Furthermore, the arc surface allows for a more uniform pressure distribution on the contact surface, avoiding concentrated wear caused by excessive local pressure, and helping to extend the service life of the limiting member 451 and the second protrusion 4421. In addition, the arc surface provides better contact conditions, enabling a smooth transition when the second protrusion 4421 abuts against the limiting member 451. During the closing and opening of the second air guide plate 42, this smooth transition reduces vibration and impact, improving the motion stability of the entire air guide plate assembly 4.

[0100] In some embodiments, such as Figure 13 and Figure 14 As shown, the motor 43 drives the first air guide plate 41 to open from the second angle to the third angle, and during the process of the first crank 441 rotating around the first rotation axis O1, the first end of the connecting rod 443 rotates relative to itself in the second groove segment 44112 around its own center, so that the first end of the connecting rod 443 and the first crank 441 rotate synchronously around the first rotation axis O1. The rotation of the connecting rod 443 drives the second crank 442 to rotate around the second rotation axis O2. The rotation of the second crank 442 drives the second air guide plate 42 to open from the fourth angle to the fifth angle.

[0101] In other words, when the first air guide plate 41 opens to the second angle, the first end of the connecting rod 443 abuts against the bottom of the second groove section 44112. At this time, the first air guide plate 41 continues to rotate to the third angle, and the first crank 441 rotates around the first rotation axis O1. The bottom of the second groove section 44112 pushes the first end of the connecting rod 443 and the first crank 441 to rotate synchronously, so that the second end of the connecting rod 443 drives the second crank 442 to rotate around the second rotation axis O2, thus realizing the opening of the second air guide plate 42 from the fourth angle to the fifth angle. This shows that the air guide plate control of the indoor unit 100 has more adjustment capabilities. By further opening the first air guide plate 41, the second air guide plate 42 continues to open and the opening angle is further increased, so that the air outlet direction can be adjusted more precisely according to the indoor environment requirements and the air conditioning operation status, which can better meet the diverse needs of air conditioning in different indoor environments.

[0102] When the first air guide plate 41 rotates from the closed state to the first angle, the first groove segment 44111 engages with the first end of the connecting rod 443. At this time, the first groove segment 44111 allows the first end of the connecting rod 443 to slide within it, while the position of the second end of the connecting rod 443 remains essentially unchanged. This means that the second crank 442 is not effectively driven by the connecting rod 443 during this process, thus keeping the second air guide plate 42 closed and achieving an asynchronous effect where the first air guide plate 41 moves independently while the second air guide plate 42 remains stationary. When the first air guide plate 41 continues to rotate from the first angle to the second angle, the first end of the connecting rod 443 enters the second groove segment 44112. The shape and orientation of the second groove segment 44112 change, meaning the movement trajectory of the first end of the connecting rod 443 within the second groove segment 44112 differs from that within the first groove segment 44111. After the first end of the connecting rod 443 enters the second groove segment 44112, due to the bending of the groove segment, the first end of the connecting rod 443 experiences a guiding force in the direction of the first rotation axis O1. This guiding force is transmitted through the connecting rod 443 to the second crank 442, thereby opening the second air guide plate 42. Furthermore, during the rotation of the first air guide plate 41 from the second angle to the first angle, the second groove segment 44112 can apply a second driving force to the first end of the connecting rod 443, causing the second end of the connecting rod 443 to pass through the second crank 442 to close the second air guide plate 42.

[0103] In some embodiments, such as Figure 13 and Figure 14 As shown, during the process of the first air guide plate 41 opening from the first angle to the third angle and the second air guide plate 42 opening from the closed state to the fifth angle, the included angle between the first air guide plate 41 and the second air guide plate 42 gradually decreases. It should be noted that the included angle between the first air guide plate 41 and the second air guide plate 42 affects the air delivery distance.

[0104] When the first air guide plate 41 opens to the second angle, the second air guide plate 42 opens to the fourth angle. At this point, the angle between the first air guide plate 41 and the second air guide plate 42 is large, meaning that the cross-section of the air supply channel formed between the first air guide plate 41 and the second air guide plate 42 increases from small to large along the air outlet direction. When the first air guide plate 41 opens to the third angle, the second air guide plate 42 opens to the fifth angle. At this point, the angle between the first air guide plate 41 and the second air guide plate 42 is small, meaning that the cross-section of the air supply channel formed between the first air guide plate 41 and the second air guide plate 42 decreases from large to small along the air outlet direction. This reduces the outlet area of ​​the airflow and increases the airflow velocity, thus allowing the airflow to be directed more concentratedly to the target area, improving air supply efficiency. Furthermore, as the angle between the first air guide plate 41 and the second air guide plate 42 decreases, the airflow is guided more concentratedly, further increasing the air supply distance and ensuring that hot and cold air quickly reaches every corner of the room, improving user comfort.

[0105] like Figure 14 and Figure 15 As shown, the air guide plate assembly 4 also includes a transmission assembly 46, which includes a drive gear 461, and the drive gear 461 is connected to the output shaft of the motor 43.

[0106] The transmission assembly 46 also includes a driven gear 462, which is fixed relative to the first crank 441. The driving gear 461 meshes with the driven gear 462, and the pitch circle of the driving gear 461 (e.g., Figure 15 (As shown in M) The diameter is smaller than the pitch circle of the driven gear 462 (e.g.) Figure 15 (N is the diameter shown in the middle).

[0107] It should be noted that the fact that the driven gear 462 is fixed relative to the first crank 441 means that the driven gear 462 can be fixedly mounted on the first crank 441 or on the first air guide plate 41. This embodiment does not make specific limitations on this.

[0108] In the related technology, the motor 43 directly drives the first air guide plate 41 to rotate. The motor 43 also needs to drive the second air guide plate 42 to rotate through the first crank 441, the second crank 442 and the connecting rod 443. In order to ensure that the first air guide plate 41 and the second air guide plate 42 can open and close smoothly, a motor 43 with a large torque is required. This will increase the cost of the motor 43 and thus increase the production cost of the indoor unit 100.

[0109] In this embodiment, since the pitch circle diameter of the driving gear 461 is smaller than that of the driven gear 462, when the motor 43 outputs a certain torque and speed, the driving gear 461 and the driven gear 462 can increase the torque output by the motor 43, thereby increasing the torque transmitted to the first air guide plate 41 through the driving gear 461 and the driven gear 462. Thus, when selecting the motor 43, a motor with lower torque can be chosen. By increasing the torque of the motor 43 through the driving gear 461 and the driven gear 462, the normal rotation of the first air guide plate 41 and the second air guide plate 42 can be ensured. Choosing a motor with lower torque reduces the cost of the motor 43, thereby lowering the manufacturing cost of the indoor unit 100.

[0110] 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.

Claims

1. An indoor unit, characterized in that, The indoor unit includes: A housing, wherein a housing receiving cavity is formed within the housing, the housing comprising: A panel, wherein an air inlet and an air outlet are provided on the panel; An air guide plate assembly is disposed at the air outlet, and the air guide plate assembly includes: The first air guide plate is rotatably disposed on the side of the air outlet near the air inlet; The second air guide plate is rotatably disposed on the side of the air outlet away from the air inlet; An electric motor, the output shaft of which is connected to the first air guide plate to drive the first air guide plate to rotate; Linkage mechanism, the linkage mechanism comprising: A first crank is connected to the output shaft of the motor. The motor can drive the first crank and the first air guide plate to rotate synchronously around a first rotation axis. The first crank is provided with a sliding groove. The second crank is connected to the second air guide plate, and the second crank and the second air guide plate can rotate synchronously around the second rotation axis; A connecting rod, the first end of which is capable of sliding and rotating within the sliding groove, and the second end of which is rotatably connected to the second crank; The sliding groove includes: In the first slot section, as the motor drives the first air guide plate to open from the closed state to the first angle and the first crank rotates around the first rotation axis, the first end of the connecting rod slides relative to the first slot section, so that the connecting rod remains stationary relative to the housing. The second slot is connected to the first slot. During the process of the motor driving the first air guide plate to open from the first angle to the second angle and the first crank rotating around the first rotation axis, the first end of the connecting rod slides relative to the first slot and causes the first end of the connecting rod to move towards the side closer to the second air guide plate. The movement of the connecting rod drives the second crank to rotate around the second rotation axis. The rotation of the second crank drives the second air guide plate to open from the closed state to the fourth angle. A fixing box is disposed within the housing cavity, and the first crank, the second crank, and the connecting rod are all disposed within the fixing box; The inner wall of the fixing box is provided with: The limiting member is elastically deformable. When the second air guide plate is in the closed state, the limiting member abuts against the second crank to apply a blocking force to the second crank to prevent the second crank from rotating. When the connecting rod moves, the connecting rod can push the second crank so that the second crank overcomes the blocking force and drives the second air guide plate to rotate.

2. The indoor unit according to claim 1, characterized in that, The limiting component includes: An elastic support portion is disposed on the inner wall of the fixed box and is capable of elastic deformation in a direction away from or close to the second crank. The first protrusion is disposed on the surface of the elastic support facing the second crank. When the second air guide plate is in the closed state, the first protrusion abuts against the second crank.

3. The indoor unit according to claim 2, characterized in that, The elastic support portion includes: The main body is made of an elastic material, the first protrusion is disposed on the main body, and there is a gap between the main body and the inner wall of the fixing box; A first connecting part is connected between the first end of the main body and the inner wall of the fixing box; The second connecting part is connected between the second end of the main body and the inner wall of the fixing box.

4. The indoor unit according to claim 3, characterized in that, The main body is a hollow structure.

5. The indoor unit according to claim 3, characterized in that, The first protrusion includes: The contact surface is the surface on which the second crank abuts against the first protrusion when the second air guide plate is in the closed state. When the second air guide plate is in the closed state, the end of the contact surface away from the main body is inclined away from the side of the second crank relative to the end of the contact surface close to the main body.

6. The indoor unit according to any one of claims 1-5, characterized in that, The second crank is provided with a second protrusion, which is located at one end of the second crank near the limiting member. When the second air guide plate is in the closed state, the second protrusion abuts against the limiting member.

7. The indoor unit according to claim 6, characterized in that, The outer surface of the second protrusion is an arc surface.

8. The indoor unit according to claim 1, characterized in that, The motor drives the first air guide plate to open from the second angle to the third angle, and during the process of the first crank rotating around the first rotation axis, the first end of the connecting rod rotates relative to itself in the second groove section around its own center, so that the first end of the connecting rod and the first crank rotate synchronously around the first rotation axis. The rotation of the connecting rod drives the second crank to rotate around the second rotation axis, and the rotation of the second crank drives the second air guide plate to open from the fourth angle to the fifth angle.

9. The indoor unit according to claim 8, characterized in that, During the process of the first air guide plate opening from the first angle to the third angle and the second air guide plate opening from the closed state to the fifth angle, the included angle between the first air guide plate and the second air guide plate gradually decreases.

10. The indoor unit according to claim 1, characterized in that, The linkage mechanism further includes a transmission assembly disposed between the output shaft of the motor and the first crank, the transmission assembly comprising: A drive gear, which is connected to the output shaft of the motor; The driven gear is fixed relative to the first crank, the driving gear meshes with the driven gear, and the pitch circle diameter of the driving gear is smaller than that of the driven gear.

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