Duct air conditioner and self-dust removal method of duct air conditioner

Abstract

The present invention provides a duct air conditioner, comprising: a shell, a fan, a filter, a partition and a magnetic attraction portion; the shell is provided with an air inlet and an air outlet on both sides along the air flow direction; the fan is provided on the side close to the air inlet along the air flow direction; the partition is connected to the shell and is provided between the fan and the air outlet; one end of the filter is rotatably connected to the partition; the magnetic attraction portion is detachably connected to the free end of the filter. The present invention provides a magnetic attraction portion at the free end of the filter, and during operation, dust continuously accumulates on the filter. When dust continuously accumulates, the filter is poorly ventilated, and the wind pressure on the filter gradually increases. When it exceeds the attraction of the magnetic attraction portion, the filter bounces up and collides with the limiter and generates vibration, which shakes off the dust and realizes self-dust removal. Compared with the existing duct air conditioner, the cleaning operation of the filter at the air inlet is omitted, and an automatic dust removal method is adopted to improve the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air duct unit and a self-dust removal method for the air duct unit. Background Art

[0002] Because the indoor unit of household central air conditioners is installed on the ceiling, they are also called ducted air conditioners. They have the advantages of beautiful installation and small space occupation, and their market sales share is increasing. The existing ducted air conditioner filters are usually arranged on the air inlet and outlet. Cleaning requires disassembling both, which is very inconvenient. In addition, they generally do not have self-dust removal function. After long-term use, a lot of dust will accumulate on the filter, reducing the operating efficiency of the ducted air conditioner. Summary of the Invention

[0003] The present invention provides an air duct unit to solve the above problems in the prior art.

[0004] The invention also provides a self-dust removal method for an air duct unit.

[0005] According to the first aspect of the present invention, a duct machine is provided, comprising: a shell, a fan, a filter, a partition and a magnetic attraction portion; the shell is respectively provided with an air inlet and an air outlet on both sides along the air flow direction; the fan is arranged on a side close to the air inlet along the air flow direction; the partition is connected to the shell and is arranged between the fan and the air outlet; one end of the filter is rotatably connected to the partition; the magnetic attraction portion is detachably connected to the free end of the filter.

[0006] According to one embodiment of the present invention, it also includes: a limit member and a vibration sensor; the limit member is connected to the side surface of the partition away from the fan, and is located on the rotation path of the filter; the vibration sensor is connected to the partition, and is used to receive vibration information transmitted from the limit member.

[0007] According to one embodiment of the present invention, the limiting member includes: a first section and a second section; the first section and the second section are connected to each other to form an L-shaped structure; the second section is arranged on the rotation path of the filter screen and is arranged parallel to the filter screen, for colliding with the filter screen and generating vibration.

[0008] According to one embodiment of the present invention, it also includes: an evaporator and a water receiving tray; the evaporator is arranged between the partition and the air outlet, and is inclined at an angle to the partition; the water receiving tray is arranged below the evaporator to receive water and shaken-off dust.

[0009] According to an embodiment of the present invention, the device further includes: a controller and a flushing device, wherein the controller is connected to the vibration sensor and the flushing device respectively, and is used to control the flushing device to flush the water receiving tray.

[0010] According to the second aspect of the present invention, a self-dust removal method for a duct air conditioner is provided, which is applied to the above-mentioned duct air conditioner, including: controlling the duct air conditioner to operate continuously and continuously detecting the vibration signal from the vibration sensor; determining that the vibration signal meets the preset signal state, generating a speed adjustment strategy according to the operating speed of the duct air conditioner, and adjusting the speed of the fan according to the speed adjustment strategy; determining that the vibration signal does not meet the preset signal state, and controlling the duct air conditioner to continue operating.

[0011] According to one embodiment of the present invention, the step of determining whether the vibration signal satisfies a preset signal state specifically includes: determining the vibration amplitude of the filter based on the vibration information received by the vibration sensor; determining the vibration intensity of the filter based on the vibration amplitude; and determining that the vibration intensity satisfies an intensity threshold, then the vibration signal satisfies the preset signal state.

[0012] According to an embodiment of the present invention, the step of generating a speed adjustment strategy based on the operating speed of the duct machine specifically includes: obtaining the vibration intensity of the filter; and generating the speed adjustment strategy based on the operating speed and the vibration intensity.

[0013] According to one embodiment of the present invention, the step of generating a speed adjustment strategy based on the operating speed of the ducted air conditioner specifically includes: adjusting the speed of the ducted air conditioner to at least the dust removal speed based on the vibration intensity; after a first preset time, the ducted air conditioner operates at the operating speed again; within the preset dust removal time, the above steps are continuously repeated; it is determined that the vibration sensor has not received the vibration signal within a second preset time, and controlling the fan to continue operating at the operating speed.

[0014] According to one embodiment of the present invention, after the step of controlling the ducted air conditioner to continue operating, it specifically includes: obtaining the cumulative operating time of the fan, and controlling the flushing device to flush the water tray according to the cumulative operating time; or, obtaining the cumulative number of times the vibration sensor receives the vibration signal during the operating time, and controlling the flushing device to flush the water tray according to the cumulative number of times.

[0015] The above-mentioned one or more technical solutions in the present invention have at least one of the following technical effects: the duct air conditioner and the self-dust removal method of the duct air conditioner provided by the present invention are achieved by setting a partition between the fan and the air outlet of the duct air conditioner, one end of the filter is rotatably connected to the partition, and the free end of the filter is detachably connected to the partition through a magnetic part. During operation, dust is continuously accumulated on the filter. When dust continues to accumulate and the filter is poorly ventilated, the wind pressure on the filter gradually increases. After exceeding the attraction of the magnetic part, the filter bounces up and collides with the limiter and generates vibration, which shakes off the dust and realizes self-dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is one of the structural diagrams of the duct air conditioner provided by the present invention;

[0018] Figure 2 This is the second structural diagram of the duct air conditioner provided by the present invention;

[0019] Figure 3 This is the third structural diagram of the duct air conditioner provided by the present invention;

[0020] Figure 4 This is one of the flow charts of the self-dust removal method for the duct air conditioner provided by the present invention;

[0021] Figure 5 This is the second flow chart of the self-dust removal method for the duct air conditioner provided by the present invention;

[0022] Figure 6 This is the third flow chart of the self-dust removal method for the duct air conditioner provided by the present invention;

[0023] Figure 7 This is the fourth flow chart of the self-dust removal method for the duct air conditioner provided by the present invention;

[0024] Figure 8 This is the fifth flow chart of the self-dust removal method for the duct air conditioner provided by the present invention.

[0025] Reference numerals:

[0026] 10. Housing; 20. Fan; 30. Filter; 40. Partition; 50. Magnetic part; 60. Limiting member; 70. Vibration sensor; 80. Evaporator; 90. Water tray. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0029] The following combination Figures 1-8 The present invention describes an air duct dryer and a self-dust removal method for the air duct dryer.

[0030] according to Figure 1 and Figure 2 As shown, the present invention provides a duct machine, comprising: a shell 10, a fan 20, a filter 30, a partition 40, a limiter 60, a vibration sensor 70, an evaporator 80 and a water tray 90, wherein the shell 10 is provided with an air inlet and an air outlet on both sides along the air flow direction; the fan 20 is arranged on the side close to the air inlet along the air flow direction; the partition 40 is connected to the shell 10 and is arranged between the fan 20 and the air outlet; one end of the filter 30 is rotatably connected to the partition 40; the vibration sensor 70 is connected to the partition 40, and the evaporator 80 is arranged between the partition 40 and the air outlet, and is inclined at an angle to the partition 40.

[0031] The water tray 90 is located below the evaporator 80 to collect condensed water and dust.

[0032] according to Figure 3 As shown, the present invention provides a duct air conditioner, which also includes a magnetic part 50. The magnetic part 50 is detachably connected to the free end of the filter 30. When dust accumulates on the filter 30 and the wind pressure increases, exceeding the attraction of the magnetic part 50, the filter 30 bounces up and collides with the limiter 60.

[0033] In a possible embodiment, a slide groove is provided at the free end of the filter 30, and the magnetic portion 50 is detachably connected to the filter 30 via the slide groove. The magnetic portion 50 is installed when self-dust removal is required.

[0034] In a possible embodiment, a snap-in slot is provided at the free end of the filter 30 , and the magnetic portion 50 is detachably connected to the filter 30 via the snap-in slot. The magnetic portion 50 is installed when self-dust removal is required.

[0035] Figure 4 This is a flow chart of the self-dust removal method for the duct air conditioner provided by the present invention, as shown in FIG. Figure 4As shown, the self-dust removal method of the air duct unit provided by the present invention includes:

[0036] Step 100: Control the ducted air conditioner to continue to operate and continuously detect the vibration signal from the vibration sensor 70;

[0037] Step 200: Determine whether the vibration signal meets a preset signal state, generate a speed adjustment strategy based on the operating speed of the ducted air conditioner, and adjust the speed of the fan 20 according to the speed adjustment strategy;

[0038] Step 300: Determine that the vibration signal does not meet the preset signal state, and control the ducted air conditioner to continue operating.

[0039] Specifically, the existing duct air conditioner filters are usually arranged on the air inlet and outlet. Cleaning requires disassembling both, which is very inconvenient and generally does not have a self-dust removal function. After long-term use, a lot of dust will accumulate on the filter, reducing the operating efficiency of the duct air conditioner.

[0040] Furthermore, the present invention sets a vibration sensor 70, generates a speed adjustment strategy according to the vibration signal received by the vibration sensor 70, adjusts the speed of the fan 20 of the duct machine according to the speed adjustment strategy, and thus realizes self-dust removal of the filter 30 of the duct machine.

[0041] It should be noted that the above-mentioned self-dust removal process is generally divided into the following steps:

[0042] A. The fan 20 is controlled to run continuously according to the operating parameters in the air conditioner operation mode.

[0043] B. During operation, dust continuously accumulates on the filter 30. One end of the filter 30 is rotatably connected to the partition 40, and the other end is detachably connected to the partition 40 via the magnetic portion 50. As dust continuously accumulates, the filter 30 becomes poorly ventilated, and the wind pressure on the filter 30 gradually increases. When the wind pressure exceeds the attraction of the magnetic portion 50, the filter 30 bounces up and collides with the limiter 60, generating vibrations, which shakes off the dust. The shaken-off dust is then blown onto the evaporator 80 by the fan 20.

[0044] C. The vibration sensor 70 receives the vibration signal, controls the fan 20 to slow down, and the filter 30 to recover. The fan 20 continues to operate at the original speed, and bounces up again and collides with the limiter 60 to shake off the dust. After repeated collisions, all the dust is shaken off, and the sensor does not receive the vibration signal, so it controls the ducted air conditioner to perform self-cleaning and process the dust that has been shaken off.

[0045] Figure 5 This is a flow chart of the self-dust removal method for the duct air conditioner provided by the present invention, as shown in FIG. Figure 5 As shown, the self-dust removal method of the air duct unit provided by the present invention includes:

[0046] Step 210: Determine the vibration amplitude of the filter 30 based on the vibration information received by the vibration sensor 70;

[0047] Step 220: Determine the vibration intensity of the filter 30 according to the vibration amplitude;

[0048] Step 230: Determine if the vibration intensity meets the intensity threshold, and then the vibration signal meets the preset signal state.

[0049] Specifically, as the filter 30 repeatedly hits the limiter 60, the amount of dust continues to decrease, the wind pressure gradually decreases, and the impact force is correspondingly weakened. In order to more accurately determine whether the filter 30 has collided with the limiter 60 and avoid misjudgment, the vibration amplitude of the filter 30 is determined based on the vibration information received by the vibration sensor 70, and then the vibration intensity is determined. When the vibration intensity is greater than the intensity threshold, it is determined that the filter 30 has collided with the limiter 60.

[0050] Figure 6 This is a flow chart of the self-dust removal method for the duct air conditioner provided by the present invention, as shown in FIG. Figure 6 As shown, the self-dust removal method of the air duct unit provided by the present invention includes:

[0051] Step 240: Obtaining the vibration intensity of the filter 30;

[0052] Step 250: Generate a speed regulation strategy according to the operating speed and the vibration intensity.

[0053] Specifically, the speed of the fan 20 is adjusted according to the vibration intensity and the operating speed, so that the filter 30 can repeatedly collide with the limiter 60, thereby better realizing the self-dust removal function, eliminating the need for users to disassemble and clean the filter 30 by themselves, and improving the user experience.

[0054] Figure 7 This is a flow chart of the self-dust removal method for the duct air conditioner provided by the present invention, as shown in FIG. Figure 7 As shown, the self-dust removal method of the air duct unit provided by the present invention includes:

[0055] Step 260: adjusting the speed of the ducted air conditioner to at least the dust removal speed according to the vibration intensity;

[0056] Step 262: After the first preset time period, the ducted air conditioner resumes operation at the operating speed;

[0057] Step 264: Repeat the above steps continuously within the preset dust removal time;

[0058] Step 266: Determine that the vibration sensor 70 does not receive a vibration signal within a second preset time period, and control the fan 20 to continue running at the operating speed.

[0059] Specifically, after receiving the vibration signal, the speed of the ducted air conditioner is reduced from the operating speed to the dust removal speed according to the vibration intensity determined by the vibration signal. After running at the dust removal speed for the first preset time, the operating speed is restored and the above steps are repeated. The filter 30 continues to hit the limiter 60 to shake off the accumulated dust until the vibration sensor 70 does not receive the vibration signal within the second preset time, and it is judged that the dust removal is completed and the fan 20 operates normally.

[0060] It should be noted that the first preset duration can be 10s, 15s or 20s, and the user can adjust it according to needs.

[0061] In a possible embodiment, the dust removal speed is divided into multiple gears and the dust removal speed of different gears is selected according to the different vibration intensities. For example, as the number of vibrations increases, the dust decreases, and the vibration intensity weakens, it is necessary to select a higher-grade dust removal speed, that is, a faster dust removal speed. Otherwise, when the dust has not been completely cleaned, the wind pressure is not enough to make the force greater than the attraction of the magnetic suction part 50, thereby causing the filter 30 to bounce up, resulting in incomplete cleaning, etc.

[0062] Figure 8 This is a flow chart of the self-dust removal method for the duct air conditioner provided by the present invention, as shown in FIG. Figure 8 As shown, the self-dust removal method of the air duct unit provided by the present invention includes:

[0063] Step 400: Obtain the cumulative operating time of the fan 20, and control the flushing device to flush the water tray 90 according to the cumulative operating time;

[0064] Step 410: Alternatively, the cumulative number of times the vibration sensor 70 receives the vibration signal during the operation period is obtained, and the flushing device is controlled to flush the docking water tray 90 according to the cumulative number.

[0065] Specifically, when the vibration sensor 70 no longer receives the vibration signal, the fan 20 operates normally and turns on the self-cleaning mode to process the dust.

[0066] Furthermore, the situations in which the vibration sensor 70 does not receive the vibration signal can be divided into two types.

[0067] A. When the ducted air conditioner is operating under dust-free conditions, some dust accumulates on the filter 30, but the accumulated amount is insufficient to cause the filter 30 to bounce up and collide with the limiter 60. Alternatively, after the filter 30 bounces up, the vibration intensity generated by the collision with the limiter 60 does not meet the intensity threshold, resulting in the vibration sensor 70 never receiving a vibration signal. At this time, the cumulative operating time of the fan 20 is obtained. The longer the cumulative operating time, the more dust accumulates on the filter 30. Although the vibration intensity after the bounce is insufficient, some dust will be shaken off. The flushing device is controlled to flush the water tray 90 based on the cumulative operating time to process the shaken-off dust.

[0068] B. When the ducted air conditioner is in normal working condition, after multiple impacts, the dust on the filter 30 has been shaken off. At this time, no vibration signal is received within the second preset time, and it is determined that the dust removal is completed. According to the cumulative number of vibration signals, the flushing device is controlled to flush the docking water tray 90. The more the cumulative number, the more dust is shaken off, and the power of the flushing device is increased.

[0069] According to the first aspect of the present invention, a duct machine is provided, comprising: a shell 10, a fan 20, a filter 30, a partition 40 and a magnetic portion 50; the shell 10 is respectively provided with an air inlet and an air outlet on both sides along the air flow direction; the fan 20 is arranged on the side close to the air inlet along the air flow direction; the partition 40 is connected to the shell 10 and is arranged between the fan 20 and the air outlet; one end of the filter 30 is rotatably connected to the partition 40; the magnetic portion 50 is detachably connected to the free end of the filter 30.

[0070] Specifically, the existing duct air conditioner filters are usually arranged on the air inlet and outlet. Cleaning requires disassembling both, which is very inconvenient and generally does not have a self-dust removal function. After long-term use, a lot of dust will accumulate on the filter, reducing the operating efficiency of the duct air conditioner.

[0071] Furthermore, by setting a partition 40 between the fan 20 and the air outlet of the duct machine, one end of the filter 30 is rotatably connected to the partition 40, and the free end of the filter 30 is detachably connected to the partition 40 through the magnetic part 50. During operation, dust continuously accumulates on the filter 30. When dust continues to accumulate, the filter 30 is poorly ventilated, and the wind pressure on the filter 30 gradually increases. After exceeding the attraction of the magnetic part 50, the filter 30 bounces up and collides with the limiter 60 and generates vibration, shaking off the dust to achieve self-dust removal. Compared with the existing duct machine, the cleaning operation of the filter at the air inlet is eliminated, and the automatic dust removal method is adopted to improve the user experience.

[0072] It should be noted that the fan 20 mentioned in the present invention may be a centrifugal fan 20 , and may also be replaced by a cross-flow fan 20 to further reduce the noise generated by the operation of the fan 20 .

[0073] According to one embodiment of the present invention, it also includes: a limit member 60 and a vibration sensor 70; the limit member 60 is connected to the side surface of the partition 40 away from the fan 20, and is located on the rotation path of the filter 30; the vibration sensor 70 is connected to the partition 40, and is used to receive vibration information transmitted from the limit member 60.

[0074] Specifically, by setting a vibration sensor 70 and a limiter 60 on one side surface of the partition 40, when the filter 30 bounces up, it collides with the limiter 60, shakes off the accumulated dust, and transmits the vibration information to the vibration sensor 70, and adjusts the speed of the fan 20 according to the vibration information.

[0075] According to one embodiment of the present invention, the limit member 60 includes: a first section and a second section; the first section and the second section are connected to each other to form an L-shaped structure; the second section is arranged on the rotation path of the filter screen 30 and is arranged parallel to the filter screen 30, for colliding with the filter screen 30 and generating vibration.

[0076] Specifically, the limiting member 60 is composed of a first section and a second section connected to form an L-shaped structure. The second section is arranged parallel to the filter 30 on the rotation path of the filter 30. When the filter 30 bounces up, it collides with the limiting member 60, shaking off the dust accumulated on the filter 30.

[0077] In a possible implementation manner, the exterior of the limiting member 60 may be wrapped with an elastic layer to prevent damage to the limiting member 60 and the filter 30 due to long-term and frequent impacts, thereby extending the service life of the components.

[0078] According to one embodiment of the present invention, it also includes: an evaporator 80 and a water receiving tray 90; the evaporator 80 is arranged between the partition 40 and the air outlet, and is inclined at an angle to the partition 40; the water receiving tray 90 is arranged below the evaporator 80, for receiving condensed water and shaken dust.

[0079] Specifically, by setting the evaporator 80 between the partition 40 and the air outlet, and setting a water collecting pan 90 below the evaporator 80, the evaporator 80 cools and purifies the dust blowing in while cooling the air, filtering out some of the dust, and the dust melts into the condensed water and falls into the water collecting pan 90, and the remaining dust falls directly into the water collecting pan 90.

[0080] According to one embodiment of the present invention, the further comprising: a controller and a flushing device, wherein the controller is connected to the vibration sensor 70 and the flushing device respectively, and is used to control the flushing device to flush the docking water tray 90 .

[0081] Specifically, the controller controls the flushing device to flush the docking water tray 90 according to the above-mentioned self-dust removal method to complete the self-cleaning operation.

[0082] It should be noted that the flushing device includes: a water inlet pipe, a pump body and a water outlet pipe. The water receiving tray 90 is arranged at an angle to the shell 10, and the side connected to the water outlet pipe is in a low position. When flushing is required, the pump body is controlled to pump water to flush the water receiving tray 90. The flushing device is not the main invention point of the present invention, and the present invention does not elaborate on it.

[0083] The duct air conditioner and the self-dust removal method of the duct air conditioner provided by the present invention are such that a partition is arranged between the fan and the air outlet of the duct air conditioner, one end of the filter is rotatably connected to the partition, and the free end of the filter is detachably connected to the partition via a magnetic part. During operation, dust continuously accumulates on the filter. When dust continuously accumulates, the filter is poorly ventilated, and the wind pressure on the filter gradually increases. After exceeding the attraction of the magnetic part, the filter bounces up and collides with the limiter to generate vibration, thereby shaking off the dust and realizing self-dust removal. Compared with the existing duct air conditioner, the cleaning operation of the filter at the air inlet is eliminated, and an automatic dust removal method is adopted to improve the user experience.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without contradiction.

[0085] Finally, it should be noted that the above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A self-dust removal method for a ducted air conditioner, characterized in that: The air duct machine comprises: a housing (10), a fan (20), a filter (30), a partition (40), a magnetic attraction portion (50), a position limiting member (60) and a vibration sensor (70); The shell (10) is provided with an air inlet and an air outlet on both sides along the air flow direction; the fan (20) is provided on a side close to the air inlet along the air flow direction; the partition (40) is connected to the shell (10) and is provided between the fan (20) and the air outlet; one end of the filter (30) is rotatably connected to the partition (40); the magnetic attraction portion (50) is detachably connected to the free end of the filter (30); the limiting member (60) is connected to a surface of a side of the partition (40) away from the fan (20) and is located on a rotation path of the filter (30); the vibration sensor (70) is connected to the partition (40) and is used to receive vibration information transmitted from the limiting member (60); The method comprises: Controlling the ducted air conditioner to continuously operate and continuously detecting a vibration signal from a vibration sensor (70); Determining that the vibration signal satisfies a preset signal state, generating a speed adjustment strategy according to the operating speed of the ducted air conditioner, and adjusting the speed of the fan (20) according to the speed adjustment strategy; It is determined that the vibration signal does not meet the preset signal state, and the ducted air conditioner is controlled to continue operating.

2. The self-dust removal method for a ducted air conditioner according to claim 1, characterized in that: The limiting member (60) comprises: a first section and a second section; The first section and the second section are connected to each other to form an L-shaped structure; The second section is arranged on the rotation path of the filter screen (30) and is arranged in parallel with the filter screen (30), and is used to collide with the filter screen (30) and generate vibration.

3. The self-dust removal method for an air duct unit according to claim 1, characterized in that: Also includes: an evaporator (80) and a water receiving tray (90); The evaporator (80) is arranged between the partition (40) and the air outlet, and is arranged at an angle to the partition (40); The water receiving tray (90) is arranged below the evaporator (80) and is used to receive condensed water and dust that has fallen off.

4. The self-dust removal method for an air duct unit according to claim 3, characterized in that: Also includes: A controller and a flushing device, wherein the controller is connected to the vibration sensor (70) and the flushing device respectively, and is used to control the flushing device to flush the water receiving tray (90).

5. The self-dust removal method for an air duct unit according to any one of claims 1 to 4, characterized in that: The step of determining that the vibration signal meets the preset signal state specifically includes: determining the vibration amplitude of the filter (30) based on the vibration information received by the vibration sensor (70); determining the vibration intensity of the filter screen (30) according to the vibration amplitude; It is determined that the vibration intensity meets the intensity threshold, and then the vibration signal meets the preset signal state.

6. The self-dust removal method for an air duct unit according to any one of claims 1 to 4, characterized in that: The step of generating a speed adjustment strategy according to the operating speed of the ducted air conditioner specifically includes: Obtaining the vibration intensity of the filter (30); The speed regulation strategy is generated according to the operating speed and the vibration intensity.

7. The self-dust removal method for an air duct unit according to claim 6, characterized in that: The step of generating a speed adjustment strategy according to the operating speed of the ducted air conditioner specifically includes: According to the vibration intensity, at least the rotation speed of the duct blower is adjusted to a dust removal rotation speed; After a first preset time period, the ducted air conditioner resumes operation at the operating speed; Repeat the above steps within the preset dust removal time; It is determined that the vibration sensor (70) has not received the vibration signal within a second preset time period, and the fan (20) is controlled to continue running at the operating speed.

8. The self-dust removal method for an air duct unit according to any one of claims 1 to 4, characterized in that: After the step of controlling the ducted air conditioner to continue operating, the method further includes: Obtaining the accumulated operating time of the fan (20), and controlling the flushing device to flush the docking water tray (90) according to the accumulated operating time; Alternatively, the cumulative number of times the vibration sensor (70) receives the vibration signal during the operation period is obtained, and the flushing device is controlled to flush the water receiving tray (90) according to the cumulative number.

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