Air conditioner indoor unit

Abstract

The application discloses an air conditioner indoor unit, and belongs to the technical field of air treatment. The air conditioner indoor unit comprises a casing, a heat exchanger, a fan, a turning shaft and a shielding curtain assembly. A side air outlet is arranged on a side air outlet plate of the casing, and a lower air outlet is arranged on a bottom plate of the casing. The turning shaft is close to a connecting position of the bottom plate and the side air outlet plate. The shielding curtain assembly comprises a first shaft, a second shaft and a shielding curtain. One end of the shielding curtain is connected with the first shaft, and the other end is connected with the second shaft after winding around the turning shaft. The shielding curtain assembly has a first state and a second state. In the first state, the shielding curtain shields the lower air outlet and opens the side air outlet, and air blown by the fan is blown out of the side air outlet. In the second state, the shielding curtain shields the side air outlet and opens the lower air outlet, and air blown by the fan flows out of the lower air outlet. The air conditioner indoor unit can improve room temperature comfort.

Description

Technical Field

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

[0002] Most existing air conditioner indoor units have only one air inlet and one air outlet, with a fixed duct structure. However, the air density blown out during cooling and heating is different. When cooling, the air density blown out of the outlet is usually greater than the indoor air density, and the airflow tends to sink. When heating, the air density blown out of the outlet is usually less than the indoor air density, and the airflow tends to rise. However, since the cooling and heating airflows are blown out from the same outlet, there will inevitably be a situation where the airflow cannot evenly cover the entire room, resulting in poor human comfort. Utility Model Content

[0003] This application provides an indoor air conditioning unit with multiple air outlets, which can improve room temperature comfort.

[0004] An indoor unit for air conditioning includes: a casing having a top plate, a bottom plate, and a side air outlet plate connected between the top plate and the bottom plate, the side air outlet plate having a side air outlet and the bottom plate having a bottom air outlet; a heat exchanger disposed within the casing; a fan for blowing air that has undergone heat exchange through the heat exchanger through the bottom air outlet or the side air outlet; a deflector shaft disposed within the casing and near the connection between the bottom plate and the side air outlet plate; and a curtain assembly movably connected within the casing for selectively blocking the bottom air outlet or the side air outlet. The shielding curtain assembly includes: a first shaft, located on the inner side of the base plate, the length direction of the first shaft extending along a second direction, the second direction being perpendicular to the height direction of the housing and parallel to the surface of the side air outlet panel; a second shaft, located on the inner side of the side air outlet panel, the length direction of the second shaft extending along the second direction; and a shielding curtain, the two ends of which are respectively connected to the first shaft and the second shaft, the shielding curtain starting from the end connected to the first shaft, extending towards the side near the side air outlet panel, passing the steering shaft, wrapping around the bottom side of the steering shaft towards the side near the side air outlet panel of the steering shaft, and then extending upward to the second shaft; The blind assembly has a first state and a second state; In the first state, the curtain blocks the lower air outlet and opens the side air outlet, and the air blown out by the fan flows to the side air outlet; In the second state, the curtain blocks the side air outlet and opens the bottom air outlet, and the air blown by the fan flows down to the bottom air outlet.

[0005] In this technical solution, a movable shielding curtain assembly is installed at the air outlet. The shielding curtain blocks the lower air outlet and opens the side air outlet to achieve side airflow of the air conditioner, and the shielding curtain blocks the side air outlet and opens the lower air outlet to achieve bottom airflow of the air conditioner. When cooling, air can be sent into the indoor space from the side air outlet to avoid the problem of cold air blowing directly on people and causing poor comfort. It also helps the cold air to cover the entire indoor space from top to bottom. When heating, air can be sent into the indoor space from the lower air outlet to help the hot air sink and avoid the problem of the hot air not being able to blow down, which would result in poor heating effect.

[0006] In addition, the blinds are distributed close to the inside of the side air outlet panel and the bottom plate, which can reduce the space occupied by the blind assembly.

[0007] In some embodiments, in a first state, the first shaft is located on the side of the lower air outlet away from the side air outlet panel, the lower air outlet is blocked by a curtain, and the second shaft is located on the lower side of the side air outlet; in a second state, the second shaft is located on the upper side of the side air outlet, the side air outlet is covered by a curtain, and the first shaft is located on the side of the lower air outlet near the side air outlet panel.

[0008] In this technical solution, the opening and closing of the air outlet is achieved by changing the position of the first axis and the second axis.

[0009] In some embodiments, the curtain assembly has a third state in which the first axis is located on the side of the lower air outlet away from the side air outlet panel, and the second axis is located above the side air outlet, so that both the lower air outlet and the side air outlet are blocked by the curtain.

[0010] In this technical solution, the curtain assembly has a third state that simultaneously blocks the lower air outlet and the side air outlet. When the air conditioner is turned off, the curtain assembly is in the third state, which can play a sealing and protective role, preventing dust and impurities from entering the air conditioner.

[0011] In some embodiments, the first axis moves along a first direction and the second axis moves along a height direction to change the state of the blind; the first direction is perpendicular to the second direction and the height direction.

[0012] In this technical solution, the blocking state of the shielding curtain on the air outlet is changed by the movement of two axes.

[0013] In some embodiments, one of the first shaft and the second shaft is a driving shaft and the other is a driven shaft. A gear is connected to the driving shaft, and a rack that meshes with the gear is connected inside the housing. The gear moves relative to the rack to drive the curtain to move.

[0014] In this technical solution, the movement of the gear relative to the rack drives the curtain connected to the drive shaft to move.

[0015] In some embodiments, the indoor unit of the air conditioner further includes: a motor, which is movably connected relative to the housing, the direction of movement of the motor is the same as the length direction of the rack, and the output shaft of the motor is connected to a drive shaft or a gear.

[0016] In this technical solution, the motor is connected to a gear or a drive shaft, and the motor can move relative to the housing, thereby enabling the motor to drive the drive shaft.

[0017] In some embodiments, the indoor unit of the air conditioner further includes: a connecting rod, the two opposite ends of which are respectively hinged to a drive shaft and a driven shaft; the drive shaft drives the driven shaft to move through the connecting rod.

[0018] In this technical solution, the driven shaft moves via a connecting rod when the drive shaft moves, eliminating the need for a drive device for the driven shaft, thus simplifying the structure and reducing costs.

[0019] In some embodiments, a slide rail is provided inside the housing, and the two ends of the driven shaft are inserted into the slide rail, allowing the driven shaft to move along the slide rail.

[0020] In this technical solution, a slide rail is provided between the driven shaft and the housing to achieve the moving connection of the driven shaft.

[0021] In some embodiments, rollers are provided at both ends of the driven shaft, and the rollers move within the grooves of the slide rail.

[0022] In this technical solution, by providing rollers on the driven shaft that cooperate with the slide rail, friction can be reduced and the smooth movement of the driven shaft can be ensured.

[0023] In some embodiments, the indoor unit of the air conditioner further includes: a steering shaft including an outer shaft and an inner shaft inserted into the outer shaft, the inner shaft being connected to the housing, and the outer shaft being rotatable relative to the inner shaft.

[0024] In this technical solution, since the outer shaft of the steering shaft can rotate, the friction between the steering shaft and the screen curtain can be reduced. Attached Figure Description

[0025] Figure 1 An exterior view of an air conditioner indoor unit according to some embodiments is shown; Figure 2 An internal schematic diagram of an air conditioner indoor unit in a first state, according to some embodiments, is shown; Figure 3 An internal schematic diagram of an air conditioner indoor unit in a second state, according to some embodiments, is shown; Figure 4 An internal schematic diagram of an air conditioner indoor unit in a third state, according to some embodiments, is shown; Figure 5 A perspective view of a blind curtain and its transmission mechanism in an indoor air conditioning unit according to some embodiments is shown; Figure 6 A perspective view of a curtain assembly in an indoor air conditioning unit according to some embodiments is shown; Figure 7 A perspective view of a blind curtain and its transmission mechanism in an indoor air conditioning unit according to some other embodiments is shown; Figure 8 A partial schematic diagram of the air conditioner indoor unit's blindfold according to some embodiments is shown; Figure 9 An internal schematic diagram of an air conditioner indoor unit in a first state, according to some other embodiments, is shown; Figure 10 A schematic diagram of the structure of the steering shaft in an indoor air conditioning unit according to some embodiments is shown.

[0026] In the above figures, 10 is the casing; 11 is the top plate; 12 is the bottom plate; 121 is the lower air outlet; 13 is the side air outlet panel; 131 is the side air outlet; 14 is the side air inlet panel; 141 is the air inlet; 15 is the closed side panel; 161 is the first limiting part; 162 is the second limiting part; 20 is the heat exchanger; 21 is the water receiving tray; 211 is the accommodating space; 30 is the fan; 40 is the curtain assembly; 41 is the curtain; 42 is the first shaft; 43 is the second shaft; 44 is the gear; 45 is the connecting rod; 46 is the roller; 51 is the steering shaft; 511 is the inner shaft; 512 is the outer shaft; 52 is the rack; 53 is the motor; 54 is the guide rail; 55 is the slider; 56 is the slide rail; and 561 is the slide groove. Detailed Implementation

[0027] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, the air conditioner performs a refrigeration cycle by using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0032] The compressor compresses refrigerant gas at a low temperature and low pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0033] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve, returning the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0034] The outdoor unit of an air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner includes the indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit.

[0035] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0036] This application relates to an indoor unit for air conditioning an indoor space. In the following text, for convenience, the indoor unit including an indoor heat exchanger is referred to as an air conditioning indoor unit, and the indoor heat exchanger is referred to as a heat exchanger.

[0037] Reference Figures 1 to 4 An indoor air conditioning unit according to an embodiment of this application includes a housing 10.

[0038] The housing 10 forms the overall appearance of the indoor unit of the air conditioner. The housing 10 may include a top plate 11, forming the top structure of the housing 10; a bottom plate 12, forming the bottom structure of the housing 10; and four side panels, connecting the top plate 11 and the bottom plate 12.

[0039] Of the four side panels, one is a side exhaust panel 13, and the side panel opposite to the side exhaust panel 13 is a side intake panel 14. The two side panels connecting the side exhaust panel 13 and the side intake panel 14 are enclosed side panels 15.

[0040] The side air outlet 13 is provided with a side air outlet 131. The bottom plate 12 is provided with a bottom air outlet 121, which can be close to the side air outlet 13.

[0041] When cooling, air can be directed into the room from the side air outlet 131 to avoid direct cold air blowing on people and causing poor comfort. It also helps the cold air to cover the entire room from top to bottom. When heating, air can be directed into the room from the bottom air outlet 121 to facilitate the sinking of hot air and avoid poor heating effect caused by hot air not being able to fall. By setting the side air outlet 131 and the bottom air outlet 121, this application significantly improves the temperature comfort of the indoor space. Cooling air is blown out from the side air outlet 131, and heating air is blown out from the bottom air outlet 121.

[0042] The air inlet 141 can be located on the side air inlet panel 14, through which air from the indoor space enters the housing 10. In other embodiments, the air inlet 141 can be located on the base plate 12, specifically on the side of the base plate 12 away from the side air outlet panel 13.

[0043] Reference Figures 2 to 4 The indoor unit of the air conditioner may include a heat exchanger 20. The heat exchanger 20 is disposed inside the casing 10 and is used to absorb heat from the air introduced into the air inlet 141 or to transfer heat to the air. The heat exchanger 20 may be V-shaped, flat, or curved.

[0044] A drip tray 21 can be installed below the heat exchanger 20 to collect the water condensed in the heat exchanger 20. The drip tray 21 can be connected to a drain hose that connects to the outside of the casing 10, and can discharge the condensed water to the outside of the casing 10.

[0045] The indoor unit of the air conditioner may include a fan 30. The fan 30 is disposed inside the housing 10, allowing air to flow from the air inlet 141 to the side air outlet 131 or the bottom air outlet 121. The fan 30 may be a cross-flow fan. In other embodiments, the fan 30 may be a centrifugal fan.

[0046] The indoor unit of the air conditioner may include a curtain assembly 40. The curtain assembly 40 is movably disposed within the housing 10 and is used to selectively block the side air outlet 131 or the bottom air outlet 121.

[0047] The curtain assembly 40 includes a curtain 41. The curtain 41 can be made of canvas, polymer, composite material, or other rollable material. The curtain 41 is disposed inside the side air outlet 131 and the bottom air outlet 121 respectively, for selectively blocking the side air outlet 131 or the bottom air outlet 121.

[0048] The blind curtain 41 is distributed close to the side air outlet panel 13 and the bottom plate 12, thereby reducing the space occupied by the blind curtain assembly 40.

[0049] The blind curtain assembly 40 includes a first shaft 42. One end of the blind curtain 41 is connected to the first shaft 42. The first shaft 42 is used to move the blind curtain 41. The first shaft 42 is disposed close to the base plate 12, and its length direction extends along a second direction. The second direction is perpendicular to the height direction of the housing 10. In this application, the height direction of the housing 10 is also referred to as the height direction.

[0050] The blind curtain assembly 40 includes a second shaft 43, and the other end of the blind curtain 41 is connected to the second shaft 43. The second shaft 43 is used to move the blind curtain 41. The second shaft 43 is disposed close to the side air outlet panel 13 and extends along the second direction in its length direction.

[0051] The indoor unit of the air conditioner includes a steering shaft 51, which is used to change the extension direction of the curtain 41 so that the curtain 41 can be distributed close to the side air outlet panel 13 and the bottom plate 12. The length direction of the steering shaft 51 extends along a second direction, and the steering shaft 51 is located at the corner formed by the side air outlet panel 13 and the bottom plate 12, that is, the steering shaft 51 is located near the connection between the side air outlet panel 13 and the bottom plate 12.

[0052] One end of the curtain 41 is connected to the first shaft 42, and the other end of the curtain 41 is connected to the second shaft 43 after passing around the steering shaft 51. Specifically, starting from the end of the curtain 41 connected to the first shaft 42, the curtain 41 extends towards the side air outlet 13, then passes around the bottom side of the steering shaft 51 towards the side of the steering shaft 51 facing the side air outlet 13, and then extends upward to the second shaft 43, so that the curtain 41 extends in an "L" shape. The portion of the curtain 41 extending in the height direction is used to open or block the side air outlet 131, and the portion of the curtain 41 extending in the lateral direction is used to open or block the lower air outlet 121.

[0053] The blind assembly 40 has a first state and a second state. (Refer to...) Figure 2The arrows in the diagram indicate the airflow direction. In the first state, the curtain 41 blocks the lower air outlet 121 and opens the side air outlet 131. The air blown by the fan 30 is blown out through the side air outlet 131 to achieve side airflow from the indoor unit. Specifically, in the first state, the first shaft 42 is located on the side of the lower air outlet 121 away from the side air outlet panel 13, and the second shaft 43 is located below the side air outlet 131, so that the curtain 41 blocks the lower air outlet 121, and the curtain 41 and the side air outlet 131 are offset.

[0054] Reference Figure 3 The arrows in the diagram indicate the airflow direction. In the second state, the shielding curtain 41 blocks the side air outlet 131 and opens the bottom air outlet 121. The air blown by the fan 30 is blown out through the bottom air outlet 121 to achieve bottom airflow from the indoor unit. Specifically, in the second state, the first shaft 42 is located on the side of the bottom air outlet 121 near the side air outlet panel 13, and the second shaft 43 is located above the side air outlet 131, so that the shielding curtain 41 blocks the side air outlet 131, and the shielding curtain 41 and the bottom air outlet 121 are offset.

[0055] Projected onto a plane perpendicular to the first axis 42, the movement path of the shielding curtain 41 is an "L" shape along the bottom plate 12 and the side air outlet plate 13.

[0056] The blind curtain 41 moves along its movement path to achieve its transition between the first and second states.

[0057] In cooling mode, the blind curtain 41 can be controlled to move along the movement path to the first state, and cold air is blown out from the side air outlet 131; in heating mode, the blind curtain 41 can be controlled to move along the movement path to the second state, and hot air is blown out from the lower air outlet 121.

[0058] Since the movement trajectory of the blind curtain 41 always moves close to the inner wall of the housing 10, it will not occupy too much of the internal space of the housing 10. Therefore, the size of the indoor unit does not need to be increased in order to install the blind curtain assembly 40, thus making the indoor unit compact and small in size.

[0059] In some embodiments, refer to Figure 4 The curtain assembly 40 has a third state in which both the lower air outlet 121 and the side air outlet 131 are blocked by the curtain 41.

[0060] The first shaft 42 is located on the side of the lower air outlet 121 away from the side air outlet 13, and the second shaft 43 is located on the upper side of the side air outlet 131.

[0061] When the indoor unit is turned off, the curtain assembly 40 can be controlled to be in the third state. At this time, both the lower air outlet 121 and the side air outlet 131 are blocked, which can prevent dust and impurities in the air from entering the housing 10 through the air outlet.

[0062] In some embodiments, one of the first shaft 42 and the second shaft 43 is a driving shaft and the other is a driven shaft. The driving shaft and the driven shaft can move along a movement path to change the opening and closing state of the curtain relative to the air outlet.

[0063] For ease of description, in this application, the direction closer to the side air outlet panel 13 in the first direction is specifically defined as the positive direction of the first direction, and the direction farther away from the side air outlet panel 13 is specifically defined as the negative direction of the first direction.

[0064] Reference Figure 5 and Figure 6 The first shaft 42 is the driving shaft, and the second shaft 43 is the driven shaft. The first shaft 42 can move along a first direction, and the second shaft 43 can move along the height direction. When it is necessary to change to the first state, the first shaft 42 drives the curtain 41 to move in the negative direction of the first direction, and the second shaft 43 moves downward. When it is necessary to change to the second state, the first shaft 42 moves in the positive direction of the first direction, and the second shaft 43 drives the curtain 41 to move upward.

[0065] Reference Figure 7 The second shaft 43 is the driving shaft, and the first shaft 42 is the driven shaft. The second shaft 43 can move along the height direction and also along the first direction. When it is necessary to change to the first state, the second shaft 43 moves downward, and the first shaft 42 drives the curtain 41 to move in the negative direction of the first direction. When it is necessary to change to the second state, the second shaft 43 drives the curtain 41 to move upward, and the first shaft 42 moves in the positive direction of the first direction.

[0066] In some embodiments, refer to Figure 5 and Figure 7 The movement of the drive shaft is achieved through a gear and rack transmission mechanism.

[0067] A gear 44 is connected to the drive shaft, and a rack 52 that meshes with the gear 44 is fixedly connected inside the housing 10. The gear 44 moves relative to the rack 52 to realize the movement of the drive shaft.

[0068] The indoor unit of the air conditioner includes a motor 53, which serves as the power source for the drive shaft. The motor 53 is movably connected relative to the housing 10, and the direction of movement of the motor 53 is the same as the length direction of the rack 52. The output shaft of the motor 53 is connected to a gear 44 to drive the gear 44 to move relative to the rack 52. In other embodiments, the output shaft of the motor 53 is connected to the drive shaft.

[0069] When the motor 53 is working, the output shaft of the motor 53 drives the gear 44 connected to the drive shaft to rotate. With the cooperation of the rack 52, the gear 44 moves along the rack 52, and at the same time, the gear 44 drives the motor 53 to move.

[0070] In some embodiments, gear and rack transmission mechanisms are provided at both ends of the drive shaft along its length. The motor 53 is connected to one of the gears 44.

[0071] The motor 53 is connected to the housing 10 via a slider guide rail structure. The guide rail 54 is connected to the inner wall of the housing 10 and extends along the length of the rack 52. A slider 55 is connected to the motor 53, and the slider 55 cooperates with the guide rail 54 to move the motor 53 along the guide rail 54. The slider 55 can be connected to the motor 53 with screws. The guide rail 54 can be connected to the housing 10 with screws.

[0072] In some embodiments, refer to Figure 5 and Figure 6 The first shaft 42 is the drive shaft, and gears 44 are connected to both ends of the first shaft 42 along its length. The rack 52 extends along the first direction and can be connected to the base plate 12 by fasteners such as screws. The guide rail 54 is connected to the closed side plate 15 of the housing 10, and the guide rail 54 extends along the first direction. The motor 53 is connected to the gear 44 on its corresponding side.

[0073] Reference Figure 7 The second shaft 43 is the drive shaft, and gears 44 are connected to both ends of the second shaft 43 along its length. The rack 52 extends along the height direction. The guide rail 54 extends along the height direction.

[0074] In some embodiments, the indoor unit of the air conditioner may include a connecting rod 45. The two ends of the connecting rod 45 are respectively hinged to a drive shaft and a driven shaft; when the drive shaft moves, it drives the driven shaft to move via the connecting rod 45. There may be two connecting rods 45, located on opposite sides of the curtain assembly 40 in a second direction.

[0075] Reference Figure 5 and Figure 6 The first shaft 42 is the drive shaft. The first shaft 42 moves towards the side air outlet 13, and through the connecting rod 45, it drives the second shaft 43 to move upward.

[0076] Reference Figure 7 The second shaft 43 is the driving shaft. The second shaft 43 moves downward, and it drives the first shaft 42 to move away from the side air outlet 13 through the connecting rod 45.

[0077] In this application, the movement of the drive shaft is achieved by a motor 53 and a rack and pinion transmission. The drive shaft drives the driven shaft to move through a connecting rod 45. Only one motor 53 is needed to change the state of the curtain assembly 40, which simplifies the structure and reduces the cost.

[0078] In some embodiments, the indoor unit of the air conditioner may include a spring whose axis coincides with the movement path of the driven shaft, for moving the driven shaft when the driving shaft moves in a direction close to the steering shaft 51. One end of the spring is connected to the housing 10, and the other end of the spring is connected to the driven shaft.

[0079] The second shaft 43 is the driven shaft, and the spring is located below the driven shaft. When the first shaft 42 moves in the negative direction of the first direction, the first shaft 42 drives the second shaft 43 to move downward through the curtain 41, and at the same time the spring is compressed by the second shaft 43. When the first shaft 42 moves in the positive direction of the first direction, the second shaft 43 moves upward under the restoring force of the spring.

[0080] The first shaft 42 is the driven shaft, and the spring is located on the side of the driven shaft near the side air outlet 13. When the second shaft 43 moves upward, the second shaft 43 drives the first shaft 42 to move in the positive direction of the first direction through the shielding curtain 41, while the spring is compressed by the first shaft 42. When the second shaft 43 moves downward, the first shaft 42 moves in the negative direction of the first direction under the action of the spring's return force.

[0081] In some embodiments, refer to Figure 5 and Figure 7 The housing 10 is provided with a slide rail 56, and the two ends of the driven shaft are inserted into the slide rail 56 to move along the slide rail 56.

[0082] Two slide rails 56 are provided with grooves 561 that open toward each other. A roller 46 is connected to the end of the driven shaft. The roller 46 moves within the groove 561 to drive the driven shaft to move. The roller 46 can rotate relative to the driven shaft. The cooperation between the roller 46 and the slide rail 56 can reduce frictional resistance and improve the smoothness of the driven shaft's movement.

[0083] The opening width of the groove 561 is smaller than the diameter of the roller 46 to prevent the roller 46 from coming out of the opening of the groove 561.

[0084] Reference Figure 5 The second shaft 43 is the driven shaft, and the length direction of the slide rail 56 extends along the height direction. The slide rail 56 is connected to both sides of the side air outlet 131 in the second direction. Specifically, the slide rail 56 can be connected to the side air outlet plate 13 by screws, or the slide rail 56 can be connected to the closed side plate 15.

[0085] Reference Figure 7 The first shaft 42 is the driven shaft, the length direction of the slide rail 56 extends along the first direction, and the slide rail 56 is connected to both sides of the lower air outlet 121 in the second direction. Specifically, the slide rail 56 can be connected to the base plate 12, or the slide rail 56 can be connected to the closed side plate 15.

[0086] In other embodiments, the driven shaft is connected to the housing 10 via a gear and rack transmission mechanism. Gears are connected to both ends of the driven shaft, and a rack that meshes with the gears is provided in the slide groove 561, allowing the gears to move along the rack.

[0087] In some embodiments, refer to Figure 8 The indoor unit of the air conditioner may include a first limiting part 161. The first limiting part 161 is provided on the lower side of the side air outlet 131 in the height direction, and is used to prevent the second shaft 43 from moving downward to abut against it.

[0088] When it is necessary to switch to the first state, the first shaft 42 moves in the negative direction of the first direction, and the second shaft 43 moves downward. When the second shaft 43 abuts against the first limit part 161, the control motor 53 stops working, and the curtain 41 remains in the state when the motor 53 stops.

[0089] The indoor unit of the air conditioner may include a second limiting part 162. The second limiting part 162 is provided in a first direction on one side of the lower air outlet 121 near the side air outlet plate 13, and is used to block the first shaft 42 from continuing to move when it moves to abut against it.

[0090] When it is necessary to switch to the second state, the first shaft 42 moves in the positive direction of the first direction, and the second shaft 43 moves upward. When the first shaft 42 abuts against the second limit part 162, the control motor 53 stops working.

[0091] In some embodiments, the indoor unit of the air conditioner includes a first telescopic device connected to the base plate 12, used to provide a force along a first direction to the blind curtain 41. Specifically, the first telescopic device may be an automatic retractor. The rope of the automatic retractor is connected to a first shaft 42, and automatically retracts the rope when energized, thereby driving the first shaft 42 to move in the negative direction of the first direction.

[0092] The indoor unit of the air conditioner includes a second telescopic device connected to the top plate 11 or the side air outlet plate 13, which is used to provide an upward force for the curtain 41. Specifically, the second telescopic device can be an automatic retractor, the rope of which is connected to the second shaft 43. When energized, the rope is automatically retracted, thereby driving the first shaft 43 to move upward.

[0093] When transitioning from the first state to the second state, the second telescopic device is activated, retracting and the rope of the first telescopic device is stretched by the blind curtain 41. When transitioning from the second state to the first state, the first telescopic device is activated, retracting and the rope of the second telescopic device is stretched by the blind curtain 41.

[0094] In some embodiments, refer to Figure 9A receiving space 211 can be provided between the bottom of the water tray 21 and the base plate 12. In the first state, the shield curtain 41 can be moved into the receiving space 211, which can reduce the length of the indoor unit in the first direction and reduce the volume of the indoor unit.

[0095] In some embodiments, refer to Figure 10 The steering shaft 51 includes an outer shaft 512 and an inner shaft 511. The inner shaft 511 is inserted into the outer shaft 512 and is connected to the housing 10. The outer shaft 512 can rotate relative to the inner shaft 511. The outer shaft 512 of the steering shaft 51 rotates as the curtain 41 moves, which can reduce the wear between the curtain 41 and the steering shaft 51.

[0096] The outer shaft 512 and inner shaft 511 of the steering shaft 51 can adopt a bearing structure.

[0097] 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.

[0098] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The casing has a top plate, a bottom plate, and a side air outlet plate connected between the top plate and the bottom plate. The side air outlet plate is provided with a side air outlet, and the bottom plate is provided with a bottom air outlet. A heat exchanger is located inside the casing; A fan is used to blow air that has undergone heat exchange with the heat exchanger into the lower air outlet or the side air outlet. The steering shaft is located inside the housing and near the connection between the bottom plate and the side air outlet plate; A curtain assembly is movably connected inside the housing and is used to selectively block the lower air outlet or the side air outlet. The blind assembly includes: A first shaft is located on the inner side of the base plate. The length direction of the first shaft extends along a second direction, which is perpendicular to the height direction of the housing and parallel to the surface of the side air outlet plate. The second shaft is located on the inner side of the side air outlet plate, and the length direction of the second shaft extends along the second direction; The blind curtain has its two ends connected to the first shaft and the second shaft respectively. The blind curtain starts from the end connected to the first shaft and extends towards the side air outlet panel. When it passes the steering shaft, it wraps around the bottom side of the steering shaft to the side of the steering shaft near the side air outlet panel, and then extends upward to the second shaft. The blind assembly has a first state and a second state; In the first state, the first shaft is located on the side away from the side air outlet of the lower air outlet, the shielding curtain blocks the lower air outlet, the second shaft is located below the side air outlet, and the air blown out by the fan flows toward the side air outlet. In the second state, the second shaft is located above the side air outlet, the shielding curtain covers the side air outlet, the first shaft is located on the side of the lower air outlet near the side air outlet plate, and the air blown out by the fan flows towards the lower air outlet.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The curtain assembly has a third state in which the first axis is located on the side of the lower air outlet away from the side air outlet, and the second axis is located on the upper side of the side air outlet, so that both the lower air outlet and the side air outlet are blocked by the curtain.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The first axis moves along the first direction, and the second axis moves along the height direction to change the state of the curtain. The first direction, the second direction, and the height direction are all perpendicular.

4. The air conditioner indoor unit according to any one of claims 1-3, characterized in that, Of the first shaft and the second shaft, one is the driving shaft and the other is the driven shaft. A gear is connected to the driving shaft. A rack that meshes with the gear is connected inside the housing. The gear moves relative to the rack to drive the curtain to move.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The indoor unit of the air conditioner also includes: A motor is movably connected relative to the housing, the direction of movement of the motor is the same as the length direction of the rack, and the output shaft of the motor is connected to the gear, or the output shaft of the motor is connected to the drive shaft.

6. The indoor unit of the air conditioner according to claim 4, characterized in that, The indoor unit of the air conditioner also includes: The connecting rod has its opposite ends hinged to the driving shaft and the driven shaft, respectively; The drive shaft drives the driven shaft to move via the connecting rod.

7. The indoor unit of the air conditioner according to claim 4, characterized in that, The housing is provided with a slide rail, and the two ends of the driven shaft are inserted into the slide rail, and the driven shaft moves along the slide rail.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The driven shaft is provided with rollers at both ends, and the rollers move within the grooves of the slide rail.

9. The indoor unit of the air conditioner according to claim 1, characterized in that, The steering shaft includes an outer shaft and an inner shaft inserted into the outer shaft. The inner shaft is connected to the housing, and the outer shaft is rotatable relative to the inner shaft.

10. An indoor unit for an air conditioner, characterized in that, include: The casing has a top plate, a bottom plate, and a side air outlet plate connected between the top plate and the bottom plate. The side air outlet plate is provided with a side air outlet, and the bottom plate is provided with a bottom air outlet. A heat exchanger is located inside the casing; A fan is used to blow air that has undergone heat exchange with the heat exchanger into the lower air outlet or the side air outlet. The steering shaft is located inside the housing and near the connection between the bottom plate and the side air outlet plate; A curtain assembly is movably connected inside the housing and is used to selectively block the lower air outlet or the side air outlet. The blind assembly includes: A first shaft is located on the inner side of the base plate. The length direction of the first shaft extends along a second direction, which is perpendicular to the height direction of the housing and parallel to the surface of the side air outlet plate. The second shaft is located on the inner side of the side air outlet plate, and the length direction of the second shaft extends along the second direction; The blind curtain has its two ends connected to the first shaft and the second shaft respectively. The blind curtain starts from the end connected to the first shaft and extends towards the side air outlet panel. When it passes the steering shaft, it wraps around the bottom side of the steering shaft to the side of the steering shaft near the side air outlet panel, and then extends upward to the second shaft. The blind assembly has a first state and a second state; In the first state, the shielding curtain blocks the lower air outlet and opens the side air outlet, and the air blown out by the fan flows toward the side air outlet; In the second state, the shielding curtain blocks the side air outlet and opens the lower air outlet, and the air blown by the fan flows to the lower air outlet.

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