Indoor unit of air conditioner

Abstract

The utility model relates to an indoor unit of an air conditioner, which belongs to the technical field of air conditioning equipment and comprises a shell, an indoor heat exchanger, an indoor fan, a filter screen, a first rotary drum, a second rotary drum and a rotary drum driving component, and the rotary drum driving component comprises a first gear, a second gear, a driving motor and a driving gear. One end of the filter screen is wound on the first rotary drum, and the other end of the filter screen is wound on the second rotary drum. The first gear is installed at one end of the first rotary drum, the second gear is installed at one end of the second rotary drum, the driving gear is installed on the driving motor and meshed with the first gear and the second gear, the rotary drum driving assembly drives the rotary drums to rotate to wind and unwind the filter screen, and therefore the dust stratification filter screen corresponding to the air inlet of the air conditioner moves to be cleaned. The driving gear is directly meshed with the gears on the rotary drum to form first-stage transmission, so that the space occupied by the rotary drum driving assembly in the air conditioner is reduced, and the problem of meshing clearance caused by more gears can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, and in particular to an indoor unit of an air conditioner. BACKGROUND

[0002] An air conditioner is an air conditioner, which is a device that artificially adjusts and controls the temperature, humidity, flow rate, etc. of the air in the environment of a building or structure. In order to meet the needs of real life, some air conditioners have a fresh air function, which can transmit outdoor air to the indoor.

[0003] Air conditioners usually have a filter screen to filter and clean the air. At present, with the implementation of the double carbon policy and the increasing demand for healthy quality of life, the cleaning problem of air conditioner filter screens has gradually been put on the agenda. If the air conditioner filter screen is not cleaned regularly, it will accumulate a large amount of dust and bacteria, which not only affects the working efficiency of the air conditioner and increases energy consumption, but also may affect human health, such as causing respiratory diseases. Especially for hanging air conditioners, it is not convenient to clean them because they are hung on the indoor wall. Therefore, in the prior art, a cleaning module is usually provided inside the hanging air conditioner to automatically clean the filter screen.

[0004] In the prior art, the filter screen is usually fixed at both ends of two rotating drums, and the filter screen corresponding to the air conditioner inlet is moved by winding and unwinding the rotating drums. The rotation of the rotating drum is usually achieved by installing an output gear on the output end of the motor, setting a driven gear at the end of each rotating drum, and setting a transmission gear between the drive gear and the driven gear, so that the output gear is engaged with the transmission gear and the transmission gear is engaged with the driven gear, forming a transmission mechanism, thereby realizing the rotation of the rotating drum. However, the number of gears of the driving assembly of the rotating drum is large, which occupies a large space inside the air conditioner and causes the problem of meshing virtual position, resulting in low transmission efficiency and accuracy, and the filter screen cannot move smoothly and quickly, thereby affecting the cleaning effect of the filter screen. CONTENT OF THE UTILITY MODEL

[0005] The utility model at least solves one of the technical problems in the related art to some extent.

[0006] Therefore, this application aims to provide an indoor air conditioning unit that, when the filter needs cleaning, uses a rotary drum drive assembly to rotate the drum, winding and unwinding the filter, thereby moving the dust-accumulated filter at the corresponding air inlet for cleaning. The rotary drum drive assembly uses a drive gear at the output end of the drive motor, which directly meshes with gears on the drum to form a single-stage transmission. This reduces the number of gears and transmission levels, minimizing the space occupied by the rotary drum drive assembly within the air conditioner and avoiding the meshing misalignment problem caused by a large number of gears. This improves the transmission efficiency and accuracy of the filter drum rotation drive mechanism, ensuring stable and uniform movement of the filter for cleaning, thus guaranteeing the effective cleaning of the filter.

[0007] To achieve the above objectives, this utility model provides an indoor air conditioning unit, which includes:

[0008] The casing has an air conditioning inlet at its top;

[0009] An indoor heat exchanger is disposed inside the housing;

[0010] An indoor fan causes airflow to enter the housing through the air conditioner inlet, and after heat exchange via the indoor heat exchanger, it is introduced into the room.

[0011] The filter screen is movably connected to the housing corresponding to the air inlet of the air conditioner;

[0012] A first rotating drum is disposed inside the housing, and one end of the filter screen is wound around the first rotating drum;

[0013] The second rotating drum is disposed inside the housing, and the other end of the filter screen is wound around the second rotating drum.

[0014] A rotary drum drive assembly, used to drive the first and second rotary drums to rotate, the rotary drum drive assembly comprising:

[0015] The first gear is connected to one end of the first rotating drum;

[0016] The second gear is connected to one end of the second rotating drum;

[0017] A drive motor is located adjacent to the first rotating drum and the second rotating drum;

[0018] A drive gear is fixed to the output end of the drive motor; the drive gear meshes with the first gear and the second gear.

[0019] The drive motor drives the first gear and the second gear to rotate in the same direction. The first gear drives the first drum to rotate synchronously, and the second gear drives the second drum to rotate synchronously.

[0020] In the technical scheme, when the filter screen needs to be cleaned, the filter screen is wound and unwound by driving the rotating drum to rotate by the rotating drum driving assembly, so that the dust filter screen corresponding to the air inlet of the air conditioner is moved to be cleaned. The rotating drum driving assembly is provided with a driving gear at the output end of the driving motor, and the driving gear is directly engaged with the gears on the rotating drum to form a one-stage transmission, thereby reducing the number of gears and the transmission levels, reducing the space occupation of the rotating drum driving assembly in the air conditioner, avoiding the meshing virtual position problem caused by too many gears, and improving the transmission efficiency and accuracy of the driving mechanism of the rotating drum. The filter screen can be stably and uniformly moved to be cleaned, thereby ensuring the cleaning effect of the filter screen.

[0021] Some embodiments of the present application further comprise:

[0022] A fixed frame is arranged inside the shell and located at one end of the length direction of the indoor heat exchanger;

[0023] The first rotating drum and the second rotating drum are rotatably connected to the fixed frame, and the first gear and the second gear are arranged outside the fixed frame.

[0024] In the technical scheme, the two rotating drums are installed near one end of the indoor unit shell through the fixed frame, and the two gears are fixedly connected with the two rotating drums through the fixed frame. The installation of the rotating drum driving assembly and the rotating drum through the fixed frame can make the layout more reasonable and the structure more stable.

[0025] In some embodiments of the present application, the first rotating drum is adjacent to the indoor heat exchanger, and the second rotating drum is located on the side away from the indoor heat exchanger.

[0026] In the technical scheme, the position of one end of the length direction of the indoor heat exchanger inside the shell has a certain space from the shell, and the first rotating drum and the second rotating drum are arranged at this position, which can reduce the increase of the volume of the air conditioner and facilitate the arrangement of the rotating drum transmission assembly based on the original structure of the indoor unit of the air conditioner.

[0027] In some embodiments of the present application, the first rotating drum winds the filter screen when rotating clockwise at the front side of the shell.

[0028] In the technical scheme, the cleaning brush assembly is arranged on the side of the first rotating drum away from the second rotating drum to clean the filter screen, and the first rotating drum can gradually wind the dusty filter screen when rotating to be cleaned by the cleaning brush assembly. When the first rotating drum rotates clockwise at the front side of the indoor unit of the air conditioner, the filter screen is wound from the lowest point to the top point of the first rotating drum, and the cleaning assembly cleans the dust downward against the moving direction of the filter screen, so that the dust can naturally fall off, thereby achieving a better cleaning effect.

[0029] Some embodiments of the present application further comprise:

[0030] The first bearing seat is fixed in the interior of the shell.

[0031] The other end of the first rotating drum is connected to the inner ring of the first bearing seat.

[0032] In the technical scheme, the other end of the first rotating drum is fixed in the bearing seat through the first bearing seat, the stability of the rotation of the first rotating drum is ensured, the efficiency and stability of the movement of the filter screen are further improved, and the cleaning effect of the filter screen is ensured.

[0033] Some embodiments of the present application further comprise:

[0034] The second bearing seat is fixed in the interior of the shell.

[0035] The other end of the second rotating drum is connected to the inner ring of the second bearing seat.

[0036] In the technical scheme, the other end of the second rotating drum is fixed in the bearing seat through the second bearing seat, the stability of the rotation of the second rotating drum is ensured. In addition, the other end of the second rotating drum and the other end of the first rotating drum are not in gear transmission, the mutual interference of the second rotating drum and the first rotating drum during rotation is avoided, the efficiency and stability of the movement of the filter screen are further improved, and the cleaning effect of the filter screen is ensured.

[0037] In some embodiments of the present application, the first gear and the second gear are arranged to have a gap in the horizontal direction and a height difference in the vertical direction, and the drive gear is arranged between the first gear and the second gear.

[0038] In the technical scheme, the first gear and the second gear have a height difference in the horizontal direction, which facilitates the arrangement of the drive gear engaged with the first gear and the second gear. The first gear and the second gear can be pulled apart, thereby reducing the size of the drive gear, making the spatial layout of the rotating drum driving assembly more compact and occupying less space. In addition, the first rotating drum and the second rotating drum are appropriately arranged to be staggered in the horizontal direction, the axis of the first rotating drum is slightly higher than that of the second rotating drum, and the filter screen can also move relative to the horizontal direction, thereby maintaining stability.

[0039] In some embodiments of the present application, the first gear and the second gear are the same gear.

[0040] In the technical scheme, the first gear and the second gear are the same gear, i.e., the rotational speed of the first gear is the same as that of the second gear. When the first rotating drum and the second rotating drum are driven to rotate, they can rotate synchronously and substantially equally, and the winding and unwinding of the filter screen are substantially the same, thereby enabling the filter screen to move uniformly and stably and ensuring the cleaning effect of the filter screen.

[0041] In some embodiments of the present application, the transmission ratio of the drive gear to the first gear and the transmission ratio of the drive gear to the second gear are both less than 1.

[0042] In the technical solution, the transmission ratio of the drive gear to the first gear and the transmission ratio of the drive gear to the second gear are both less than 1, so that the drive gear has a relatively low rotation speed when transmitting the same torque, thereby improving transmission efficiency and reducing wear, and ensuring the stability and reliability of the transmission.

[0043] In addition, the present application also provides an air conditioner indoor unit, comprising:

[0044] A housing having an air conditioner air inlet at the top thereof;

[0045] An indoor heat exchanger arranged inside the housing;

[0046] An indoor fan configured to cause airflow to enter the housing through the air conditioner air inlet and to be input to the indoor environment after being heat-exchanged by the indoor heat exchanger;

[0047] A filter screen movably connected to the housing corresponding to the air conditioner air inlet;

[0048] A first rotating drum arranged inside the housing, one end of the filter screen being wound around the first rotating drum;

[0049] A second rotating drum arranged inside the housing, the other end of the filter screen being wound around the second rotating drum;

[0050] A rotating drum driving assembly configured to drive the first rotating drum and the second rotating drum to rotate, the rotating drum driving assembly comprising:

[0051] A first gear connected to one end of the first rotating drum;

[0052] A second gear connected to one end of the second rotating drum;

[0053] A drive motor, an output end of the drive motor being fixedly connected to the first gear or the second gear;

[0054] The first gear and the second gear are engaged and have a transmission ratio of 1, when the drive motor drives the first gear to rotate, the first gear drives the first rotating drum to rotate synchronously and drives the second gear to rotate, the second gear drives the second rotating drum to rotate synchronously; or, when the drive motor drives the second gear to rotate, the second gear drives the second rotating drum to rotate synchronously and drives the first gear to rotate, the first gear drives the first rotating drum to rotate synchronously.

[0055] In the technical scheme, when the filter screen needs to be cleaned, the filter screen is wound and unwound by driving the rotary drum to rotate by the rotary drum driving assembly, so that the dust filter screen corresponding to the air inlet of the air conditioner is moved to be cleaned. The rotary drum driving assembly is provided with a driving motor and a transmission gear set, one of the two rotary drums is used as a driving rotary drum, the driving motor drives the driving rotary drum to rotate, and the gear set engaged between the two rotary drums is used to drive the driving rotary drum to drive the driven rotary drum to rotate synchronously, so that the number of gears and the transmission level are reduced, the space occupied by the rotary drum driving assembly in the air conditioner is reduced, the meshing virtual position problem caused by too many gears is avoided, the transmission efficiency and accuracy of the driving mechanism of the rotary drum are improved. The filter screen can be stably and uniformly moved to be cleaned, thereby ensuring the cleaning effect of the filter screen.

[0056] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0058] Figure 2 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0059] Figure 3 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0060] Figure 4 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0061] Figure 5 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0062] Figure 6 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0063] Figure 7 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0064] Figure 8 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0065] Figure 9 is a schematic diagram of the overall structure of an air conditioner indoor unit according to an embodiment of the present application;

[0066] Figure 10 is a cross-sectional structure schematic view of a self-cleaning device of an air conditioner indoor unit according to the embodiment of the present application.

[0067] In the above figures: 100, a shell; 200, an air conditioner air inlet; 300, a filter screen; 400, a first rotating drum; 500, a second rotating drum; 600, a rotating drum driving assembly; 610, a first gear; 620, a second gear; 630, a driving motor; 640, a driving gear; 700, a fixed frame; 800, a first bearing seat; 900, a second bearing seat. DETAILED DESCRIPTION

[0068] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0069] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, or can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0071] In the present application, the air conditioner indoor unit comprises a shell, an indoor heat exchanger and an indoor fan. The indoor heat exchanger and the indoor fan are arranged in the shell. The indoor air enters the shell and contacts the indoor heat exchanger, the indoor heat exchanger exchanges heat with the air, and then the air after heat exchange is output to the indoor under the action of the indoor fan, so as to realize the adjustment of the indoor temperature.

[0072] In the following, the present application will be described in detail through exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further description.

[0073] In the present application, the air conditioner indoor unit comprises a shell, an indoor heat exchanger and an indoor fan. The indoor heat exchanger and the indoor fan are arranged in the shell. The indoor air enters the shell and contacts the indoor heat exchanger, the indoor heat exchanger exchanges heat with the air, and then the air after heat exchange is output to the indoor under the action of the indoor fan, so as to realize the adjustment of the indoor temperature.

[0074] In the following, the present application will be described in detail through exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further description.

[0075] As shown in the accompanying Figures 1 to 4 As shown in the accompanying

[0076] The air conditioner indoor unit comprises an indoor heat exchanger 200, which is arranged inside the shell 100 and is used for heat exchange of the entering air.

[0077] The air conditioner indoor unit comprises an indoor fan, which is arranged inside the shell 100. Under the action of the indoor fan, the airflow enters the shell 100 through the air conditioner air inlet 200 and is input to the indoor after heat exchange through the indoor heat exchanger 200.

[0078] The air conditioner indoor unit comprises a filter screen 300, which is arranged in the shell 100. The filter screen 300 is used for filtering the air entering the shell 100.

[0079] The air conditioner indoor unit comprises a first rotating drum 400. The first rotating drum 400 is arranged inside the shell 100. One end of the filter screen 300 is wound on the first rotating drum 400. The air conditioner indoor unit comprises a first rotating drum 400. The first rotating drum 400 is arranged inside the shell 100. One end of the filter screen 300 is wound on the first rotating drum 400.

[0080] The air conditioner indoor unit comprises a second rotating drum 500. The second rotating drum 500 is arranged inside the shell 100 and is located at a position adjacent to the first rotating drum 400 with a spacing. The other end of the filter screen 300 is wound on the second rotating drum 500.

[0081] The air conditioner indoor unit comprises a rotating drum driving assembly 600. The rotating drum driving assembly 600 is arranged inside the shell 100 and is used to drive the first rotating drum 400 and the second rotating drum 500 to rotate. The rotating drum driving assembly 600 comprises a first gear 610, a second gear 620, a driving gear 640 and a driving gear 640.

[0082] The first gear 610 is fixedly connected to one end of the first rotating drum 400, and the outer diameter of the first gear 610 is greater than the outer diameter of the first rotating drum 400. The first gear 610 rotates coaxially with the first rotating drum 400. The second gear 620 is fixedly connected to one end of the second rotating drum 500, and the outer diameter of the second gear 620 is greater than the outer diameter of the second rotating drum 500. The second gear 620 rotates coaxially with the second rotating drum 500. The first gear 610 and the second gear 620 have a spacing therebetween. The driving motor 630 is arranged adjacent to the first rotating drum 400 and the second rotating drum 500. The driving gear 640 is fixed to the output end of the driving motor 630.

[0083] The driving gear 640 is engaged with the first gear 610 and the second gear 620, respectively. When the driving motor 630 is driven, the driving gear 640 rotates, driving the first gear 610 and the second gear 620 to rotate in the same direction. The first gear 610 drives the first rotating drum 400 to rotate synchronously, and the second gear 620 drives the second rotating drum 500 to rotate synchronously.

[0084] The air conditioner indoor unit comprises a cleaning brush. The cleaning brush comprises a brush shaft and brush hairs. The brush shaft is arranged in a cylindrical shape and can rotate along its own axis. The brush hairs are distributed on the peripheral wall of the brush shaft, and the end portions of the brush hairs can abut against the peripheral surface of the first rotating drum 400 to clean the dust on the wound filter screen 300.

[0085] When the filter screen 300 is cleaned, the driving motor 630 is started to make the first rotating drum 400 wind the filter screen 300, and at this time, the second rotating drum 500 unwinds the filter screen 300. After cleaning is completed, the driving motor 630 is reversed to make the second rotating drum 500 wind the filter screen 300, and the first rotating drum 400 unwinds the filter screen 300.

[0086] Through the above scheme, when the filter screen 300 needs to be cleaned, the filter screen 300 is wound and unwound by driving the rotating drum to rotate by the rotating drum driving assembly 600, so that the dust filter screen 300 at the corresponding air conditioner air inlet 200 is moved to be cleaned. The rotating drum driving assembly 600 is provided with a driving gear 640 at the output end of the driving motor 630, and the driving gear 640 is directly engaged with the gears on the rotating drum to form a one-stage transmission, thereby reducing the number of gears and the transmission level, reducing the space occupation of the rotating drum driving assembly 600 in the air conditioner, and avoiding the meshing virtual position problem caused by too many gears, so that the transmission efficiency and accuracy of the driving mechanism of the rotating drum of the filter screen 300 are improved. The filter screen 300 can be stably and uniformly moved to be cleaned, thereby ensuring the cleaning effect of the filter screen 300.

[0087] In some embodiments, the air conditioner indoor unit is further provided with a fixed frame 700. The fixed frame 700 is in the shape of a square space surrounded by three vertical plates, and the fixed frame 700 is arranged inside the shell 100 and located at one end of the length direction of the indoor heat exchanger 200. The first rotating drum 400 and the second rotating drum 500 are arranged in the fixed frame 700, and both ends of the first rotating drum 400 and both ends of the second rotating drum 500 are rotatably connected to the fixed frame 700. The first gear 610 and the second gear 620 are arranged outside the fixed frame 700. Specifically, the center shaft rod of one end of the first rotating drum 400 and the center shaft rod of the second rotating drum 500 pass through the vertical plate of the fixed frame 700 located at the rear side of the air conditioner indoor unit, and the first gear 610 and the second gear 620 are fixedly connected with the center shaft rod of the first rotating drum 400 and the center shaft rod of the second rotating drum 500 outside the fixed frame 700.

[0088] In some embodiments, the first rotating drum 400 is adjacent to the indoor heat exchanger 200, and the second rotating drum 500 is located on the side of the first rotating drum 400 away from the indoor heat exchanger 200. Inside the shell 100, the end of the length direction of the indoor heat exchanger 200 to the end surface of the shell 100 has a certain space. The first rotating drum 400 and the second rotating drum 500 are arranged at this place to reduce the increase in the volume of the air conditioner and facilitate the arrangement of the rotating drum transmission assembly based on the original structure of the air conditioner indoor unit.

[0089] In some embodiments, the first rotating drum 400 winds the filter screen 300 when rotating clockwise at the front side of the shell 100. A cleaning brush assembly is arranged on the side of the first rotating drum 400 away from the second rotating drum 500 to clean the filter screen 300. When the first rotating drum 400 rotates, the filter screen 300 with dust can be gradually wound to be cleaned by the cleaning brush assembly. When the first rotating drum 400 rotates, it rotates clockwise at the front side of the air conditioner indoor unit, which is just to make the filter screen 300 roll up from the lowest point to the top point of the first rotating drum 400, and the cleaning assembly cleans the dust downward against the moving direction of the filter screen 300, so that the dust can naturally fall off.

[0090] In some embodiments, the air conditioner indoor unit further comprises a first bearing seat 800. The first bearing seat 800 is fixed inside the housing 100, and the other end of the first rotating cylinder 400 is fixedly connected to the inner ring of the first bearing seat 800. Specifically, the first bearing seat 800 is fixed on the fixed frame 700, and then the central shaft of the other end of the first rotating cylinder 400 is fixedly connected to the rotatable inner ring of the first bearing seat 800.

[0091] In some embodiments, the air conditioner indoor unit further comprises a second bearing seat 800. The second bearing seat 800 is fixed inside the housing 100, and the other end of the second rotating cylinder 500 is fixedly connected to the inner ring of the second bearing seat 800. Specifically, the second bearing seat 800 is fixed on the fixed frame 700, and then the central shaft of the other end of the second rotating cylinder 500 is fixedly connected to the rotatable inner ring of the second bearing seat 800.

[0092] In some embodiments, the first gear 610 and the second gear 620 are arranged to have a height difference in the horizontal direction, and the drive gear 640 is arranged between the first gear 610 and the second gear 620. The distance between the first gear 610 and the second gear 620 is increased by the height difference, and the drive gear 640 can be relatively small in diameter, so that the first gear 610 and the second gear 620 can be engaged with the drive gear 640 without interfering with each other, and the overall structure is more compact and occupies less space. The central axis of the first rotating cylinder 400 is slightly higher than that of the second rotating cylinder 500, and when the front side of the housing 100 rotates clockwise, the filter screen 300 is wound, and the filter screen 300 starts to be wound at the bottom end of the first rotating cylinder 400 and at the top end of the second rotating cylinder 500. Therefore, the arrangement of the first gear 610 and the second gear 620 having a height difference in the horizontal direction can enable the filter screen 300 to move relatively horizontally.

[0093] In some embodiments, the first gear 610 and the second gear 620 are the same gears. The first gear 610 and the second gear 620 have the same size, so that the two gears have the same rotational speed, and the first rotating cylinder 400 and the second rotating cylinder 500 are driven to rotate synchronously and substantially equally, and the winding and unwinding of the filter screen 300 are substantially the same, thereby enabling the filter screen 300 to move uniformly and smoothly.

[0094] In some embodiments, the transmission ratio of the drive gear 640 to the first gear 610 and the transmission ratio of the drive gear 640 to the second gear 620 are both less than 1. The drive gear 640 can be larger in diameter than the first gear 610 and the second gear 620, so that the drive gear 640 has a relatively low rotational speed when transmitting the same torque, thereby improving transmission efficiency and reducing wear, and ensuring the stability and reliability of the transmission.

[0095] In addition, the application further provides an indoor air conditioner, which comprises a shell 100, an indoor heat exchanger 200, an indoor fan, a filter screen 300, a first rotating drum 400, a second rotating drum 500 and a rotating drum driving assembly 600. The shell 100 is provided with an air conditioner air inlet 200 at the top, and the indoor heat exchanger 200 and the indoor fan are arranged in the shell 100. The indoor fan enables air flow to enter the shell 100 through the air conditioner air inlet 200 and then enter the room after heat exchange through the indoor heat exchanger 200, and the filter screen 300 is movably connected to the shell 100 corresponding to the air conditioner air inlet 200. The first rotating drum 400 and the second rotating drum 500 are arranged in the shell 100. One end of the filter screen 300 is wound on the first rotating drum 400, and the other end is wound on the second rotating drum 500.

[0096] The rotating drum driving assembly 600 is arranged in the shell 100 and is used for driving the first rotating drum 400 and the second rotating drum 500 to rotate. The rotating drum driving assembly 600 comprises a first gear 610, a second gear 620 and a driving motor 630. The first gear 610 is coaxially fixedly connected to one end of the first rotating drum 400, the second gear 620 is coaxially fixedly connected to one end of the second rotating drum 500, and the output end of the driving motor 630 is fixedly connected to the first gear 610 or the second gear 620.

[0097] The first gear 610 and the second gear 620 are engaged and the transmission ratio is 1. When the driving motor 630 drives the first gear 610 to rotate, the first gear 610 drives the first rotating drum 400 to synchronously rotate and drives the second gear 620 to rotate, and the second gear 620 drives the second rotating drum 500 to synchronously rotate. Alternatively, when the driving motor 630 drives the second gear 620 to rotate, the second gear 620 drives the second rotating drum 500 to synchronously rotate and drives the first gear 610 to rotate, and the first gear 610 drives the first rotating drum 400 to synchronously rotate.

[0098] Through the above scheme, when the filter screen 300 needs to be cleaned, the rotating drum driving assembly 600 is used to drive the rotating drum to rotate to wind and unwind the filter screen 300, so that the dust-laden filter screen 300 corresponding to the air conditioner air inlet 200 is moved to be cleaned. The rotating drum driving assembly 600 is provided with a driving motor 630 and a transmission gear set, one of the two rotating drums is used as a driving rotating drum, the driving motor 630 is used to drive the driving rotating drum to rotate, and the transmission gear set engaged between the two rotating drums is used to realize synchronous rotation of the driving rotating drum and the driven rotating drum, thereby reducing the number of gears and the transmission level, reducing the space occupation of the rotating drum driving assembly 600 in the air conditioner, avoiding the meshing virtual position problem caused by too many gears, and improving the transmission efficiency and accuracy of the driving mechanism of the rotating drum of the filter screen 300. The filter screen 300 can be stably and uniformly moved to be cleaned, thereby ensuring the cleaning effect of the filter screen 300.

[0099] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. An air conditioner indoor unit characterized by comprising: It comprises: The shell is provided with an air conditioner air inlet at the top; The indoor heat exchanger is arranged inside the shell; The indoor fan makes the airflow input into the shell through the air conditioner air inlet, and is input into the indoor after heat exchange through the indoor heat exchanger; The filter screen is movably connected in the shell corresponding to the air conditioner air inlet; The first rotating drum is arranged inside the shell, and one end of the filter screen is wound on the first rotating drum; The second rotating drum is arranged inside the shell, and the other end of the filter screen is wound on the second rotating drum, The rotating drum driving assembly is used for driving the first rotating drum and the second rotating drum to rotate, and the rotating drum driving assembly comprises: The first gear is connected with one end of the first rotating drum; The second gear is connected with one end of the second rotating drum; The driving motor is arranged adjacent to the first rotating drum and the second rotating drum; The driving gear is fixed to the output end of the driving motor; the driving gear is engaged with the first gear, and the driving gear is engaged with the second gear; The driving motor drives the first gear and the second gear to rotate in the same direction, the first gear drives the first rotating drum to rotate synchronously, and the second gear drives the second rotating drum to rotate synchronously. 2.The indoor unit of the air conditioner according to claim 1, characterized by, It also comprises: The fixed frame is arranged inside the shell and located at one end of the indoor heat exchanger in the length direction; The first rotating drum and the second rotating drum are rotatably connected to the fixed frame, and the first gear and the second gear are arranged outside the fixed frame. 3.The indoor unit of the air conditioner according to claim 2, characterized by, The first rotating drum is adjacent to the indoor heat exchanger, and the second rotating drum is located on the side of the first rotating drum away from the indoor heat exchanger. 4.The indoor unit of the air conditioner according to claim 3, characterized by, When the first rotating drum rotates clockwise at the front side of the shell, the filter screen is wound. 5.The indoor unit of the air conditioner according to claim 1, characterized by, It also comprises: The first bearing seat is fixed inside the shell; The other end of the first rotating drum is connected to the inner ring of the first bearing seat. 6.The indoor unit of the air conditioner according to claim 1, characterized by, It also comprises: The second bearing seat is fixed inside the shell; The other end of the second rotating drum is connected to the inner ring of the second bearing seat. 7.The indoor unit of the air conditioner according to claim 1, characterized by, The first gear and the second gear are arranged to have a gap in the horizontal direction and a height difference in the vertical direction, and the driving gear is arranged between the first gear and the second gear. 8.The indoor unit of the air conditioner according to claim 1, characterized by, The first gear and the second gear are the same gears. 9.The indoor unit of the air conditioner according to claim 1, characterized by, The transmission ratio of the driving gear and the first gear and the transmission ratio of the driving gear and the second gear are both less than 1.

10. An air conditioner indoor unit characterized by comprising: It comprises: The shell is provided with an air conditioner air inlet at the top; The indoor heat exchanger is arranged inside the shell; The indoor fan makes the airflow input into the shell through the air conditioner air inlet, and is input into the indoor after heat exchange through the indoor heat exchanger; The filter screen is movably connected in the shell corresponding to the air conditioner air inlet; The first rotating drum is arranged inside the shell, and one end of the filter screen is wound on the first rotating drum; The second rotating drum is arranged inside the shell, and the other end of the filter screen is wound on the second rotating drum; The rotating drum driving assembly is used for driving the first rotating drum and the second rotating drum to rotate, and the rotating drum driving assembly comprises: A first gear is connected with one end of the first rotating drum; A second gear is connected with one end of the second rotating drum; A driving motor, an output end of the driving motor is fixedly connected with the first gear or the second gear; The first gear is engaged with the second gear and the transmission ratio is 1, when the driving motor drives the first gear to rotate, the first gear drives the first rotating drum to rotate synchronously and drives the second gear to rotate, the second gear drives the second rotating drum to rotate synchronously; or, when the driving motor drives the second gear to rotate, the second gear drives the second rotating drum to rotate synchronously and drives the first gear to rotate, the first gear drives the first rotating drum to rotate synchronously.

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