A dust removal system, method, air conditioner outdoor unit and air conditioner

Abstract

The embodiment of the present application provides a dust removal system, a method, an air conditioner outdoor unit and an air conditioner, and relates to the technical field of air conditioners.The dust removal system comprises a condenser, a fan and a wind shielding device.The fan can blow wind towards the condenser.The wind shielding device is arranged between the condenser and the fan, and is used for shielding a part of the condenser, so that the wind blown by the fan flows through another part of the condenser.The air conditioner outdoor unit comprises the dust removal system.The air conditioner comprises the air conditioner outdoor unit.The dust removal system, the method, the air conditioner outdoor unit and the air conditioner can clean dust particles on the condenser more thoroughly, and effectively improve the cleaning effect on the condenser.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a dust removal system, method, outdoor unit of an air conditioner, and an air conditioner. Background Technology

[0002] After a period of use, dust particles accumulate on the condenser inside the outdoor unit of an air conditioner. Excessive accumulation of these dust particles can affect the normal operation of the condenser. Generally, a fan is used periodically to blow air towards the condenser to clean the dust particles adhering to its surface. However, in current technology, even when the fan reaches its maximum speed at the rated power of the outdoor unit, the airflow reaching the condenser surface is still relatively low, resulting in poor dust removal efficiency. Summary of the Invention

[0003] The problem addressed by this invention is how to improve the dust removal effect on the surface of a condenser.

[0004] To address the aforementioned problems, this invention provides a dust removal system, method, outdoor unit of an air conditioner, and an air conditioner, which can effectively improve the technical problems mentioned above.

[0005] This invention can be implemented as follows:

[0006] An embodiment of the present invention provides a dust removal system, comprising:

[0007] Condenser;

[0008] A fan for blowing air toward the condenser;

[0009] A wind deflector is provided between the condenser and the fan, and the wind deflector is used to shield one part of the condenser so that the air blown by the fan flows through the other part of the condenser.

[0010] In this way, when the fan blows air towards the condenser, the air cannot pass through the portion of the condenser that is blocked. The air blown out by the fan will then pass entirely through the portion of the condenser that is not blocked by the baffle. This increases the air velocity in the unblocked portion of the condenser, and the higher air velocity can carry more dust particles away from the condenser, resulting in a more thorough cleaning of the condenser surface and improving the dust removal efficiency.

[0011] Optionally, the windproof device includes a connecting shaft, a shielding body, and a drive motor. The shielding body is connected to the connecting shaft, and the output shaft of the drive motor is driven to the connecting shaft. The drive motor is used to drive the connecting shaft to rotate so that the shielding body is rolled up on the connecting shaft or unfolded from the connecting shaft. When unfolded, the shielding body is used to shield a portion of the condenser.

[0012] When the drive motor is started, its output shaft rotates the connecting shaft. This rotation causes the shielding body to rotate, either rolling it up onto the shaft or gradually unfolding it. Once unfolded, the shielding body can cover a portion of the condenser. When rolled up onto the connecting shaft, it exposes a portion of the condenser to the airflow.

[0013] Optionally, the windbreak device further includes a boom mounted on the shield and used to pull the shield to assist in its unfolding from the connecting shaft.

[0014] In this way, during the unfolding process of the barrier, the weight of the boom will pull the barrier downward, thereby increasing the unfolding speed of the barrier. Furthermore, the boom pulling the barrier can also prevent the barrier from becoming wrinkled and unable to unfold smoothly.

[0015] Optionally, the shielding body is a flexible membrane structure.

[0016] In this way, the shield not only provides good wind protection when unfolded, but also makes it easier to roll up onto the connecting shaft.

[0017] Optionally, the wind deflector is positioned relative to the fan and close to the condenser.

[0018] In this way, the gap between the wind deflector and the condenser is smaller, and the wind is less likely to blow from the area between the wind deflector and the condenser to the surface of the condenser. The wind deflector can prevent the wind blown by the fan from reaching the blocked part of the condenser as much as possible, and the wind deflection effect is better.

[0019] Optionally, the number of wind deflectors is two, one of which is used to shield a portion of the condenser, and the other is used to shield another portion of the condenser.

[0020] In this way, by controlling two wind-blocking devices to intermittently block different parts of the condenser, the dust removal system can direct the air blown by the fan to different parts of the condenser and increase the air velocity passing through different parts of the condenser, thereby performing more thorough dust removal on different parts of the condenser.

[0021] Optionally, there may be multiple wind deflectors, and the shielding area of ​​the multiple wind deflectors may cover the entire condenser.

[0022] In this way, multiple wind-blocking devices can intermittently block different parts of the condenser, allowing the parts of the condenser exposed to the fan's airflow to be subjected to the blowing action of a larger wind speed, thereby carrying out a more thorough dust removal operation on different parts of the condenser and achieving cleaning of the entire condenser.

[0023] Optionally, the shielding areas of the plurality of windbreak devices correspond one-to-one with the plurality of dust-removing sections in the condenser.

[0024] In this way, the shielding areas of multiple wind deflectors do not overlap, which can effectively reduce the number of wind deflectors while ensuring that the shielding areas of multiple wind deflectors cover the entire condenser.

[0025] This invention also provides an outdoor unit for an air conditioner, which includes the aforementioned dust removal system and has all the functions of the dust removal system.

[0026] In this way, the condenser in the outdoor unit of the air conditioner can be cleaned more thoroughly, effectively improving the dust removal effect of the condenser.

[0027] This invention also provides an air conditioner that includes the aforementioned outdoor unit and has all the functions of the outdoor unit.

[0028] In this way, the condenser in the air conditioner can be cleaned more thoroughly, effectively improving the dust removal effect on the condenser.

[0029] This invention also provides a dust removal method applied to a dust removal system, the dust removal system including a condenser, a fan, and a baffle device, the baffle device being disposed between the condenser and the fan; the dust removal method includes:

[0030] Control the wind deflector to block a portion of the condenser;

[0031] Control the fan to blow air toward the condenser.

[0032] In this way, the wind speed of the part of the air that is not blocked by the wind deflector in the condenser is relatively high. The higher wind speed can carry more dust particles away from the condenser, making the surface of the condenser more thoroughly cleaned.

[0033] This invention also provides a dust removal method applied to a dust removal system. The dust removal system includes a condenser, a fan, and a baffle device. The condenser includes a first part and a second part. There are two baffle devices, a first baffle device and a second baffle device, both disposed between the condenser and the fan, and the first baffle device and the second baffle device correspond to the first part and the second part, respectively. The dust removal method includes:

[0034] Control the first windshield device to block the first part;

[0035] Control the second windbreak device to expose the second part to the wind field of the fan;

[0036] Control the fan to blow air toward the condenser;

[0037] After a first preset time period, the second windbreak device is controlled to block the second part, and the first windbreak device is controlled to expose the first part to the wind field of the fan.

[0038] Control the fan to continue blowing air toward the condenser for a second preset duration.

[0039] In this way, the first and second wind-blocking devices can sequentially block the first and second parts, and the air blown out by the condenser can sequentially remove dust from the first and second parts of the condenser, thereby achieving dust removal of the entire condenser.

[0040] Optionally, the first preset duration is T1, where 15s≤T1≤300s.

[0041] This saves energy, extends the lifespan of the fan, and ensures that dust particles on the condenser are fully carried away by the air blown out by the fan, thus improving the cleaning effect of the condenser.

[0042] Optionally, after the step of controlling the second windbreak device to block the second part, the dust removal method further includes:

[0043] After a second preset time period, the fan is controlled to stop.

[0044] In this way, after the dust removal is completed, the fan can be stopped to prepare for the subsequent exhaust operation.

[0045] Optionally, the second preset duration is T2, where 15s≤T2≤300s.

[0046] This saves energy, extends the lifespan of the fan, and ensures that dust particles on the condenser are fully carried away by the air blown out by the fan, thus improving the cleaning effect of the condenser. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the dust removal system provided in an embodiment of the present invention;

[0048] Figure 2 This is a structural diagram showing the number of windbreak devices provided in an embodiment of the present invention when there are two such devices.

[0049] Figure 3 This is a schematic diagram of the structure of the windbreak device provided in the embodiment of the present invention when it does not block the condenser;

[0050] Figure 4 This is a schematic diagram of the structure of the windbreak device blocking the condenser according to an embodiment of the present invention;

[0051] Figure 5 A schematic diagram of the structure of the shielding body being wound up on the connecting shaft according to an embodiment of the present invention;

[0052] Figure 6 A flowchart of a dust removal method provided in an embodiment of the present invention;

[0053] Figure 7 A flowchart of a dust removal method when the number of windbreak devices provided in an embodiment of the present invention is two.

[0054] Explanation of reference numerals in the attached drawings: 1-Dust removal system; 11-Condenser; 111-First part; 112-Second part; 12-Fan; 13-Wind baffle; 131-First wind baffle; 132-Second wind baffle; 133-Connecting shaft; 134-Shielding body; 135-Drive motor; 136-Hanging rod. Detailed Implementation

[0055] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0056] Figure 1 This is a schematic diagram of the dust removal system 1 provided in this embodiment. Please refer to... Figure 1 This embodiment provides an outdoor unit for an air conditioner, which includes a housing (not shown in the figure) and a dust removal system 1 located inside the housing. The dust removal system 1 includes a condenser 11, a fan 12, and a baffle device 13. The baffle device 13 is disposed between the fan 12 and the condenser 11, and can block a portion of the condenser 11.

[0057] It should be noted that when the baffle device 13 partially obstructs the condenser 11, the fan 12, once started, can blow air towards the condenser 11. The air cannot pass through the obstructed portion of the condenser 11; that is, no air passes through the part of the condenser 11 obstructed by the baffle device 13. Therefore, the air blown by the fan 12 will pass entirely through the part of the condenser 11 not obstructed by the baffle device 13. This increases the wind speed passing through the part of the condenser 11 not obstructed by the baffle device 13, and the higher wind speed can carry more dust particles away from the condenser 11, resulting in a more thorough cleaning of the condenser 11 surface. Furthermore, at higher wind speeds, tightly adhered dust particles on the condenser 11 surface are more easily detached.

[0058] Therefore, the dust removal system 1 provided in this embodiment can remove dust from the condenser 11 more thoroughly and effectively improve the dust removal effect on the surface of the condenser 11.

[0059] Please refer to Figure 1 In this embodiment, the wind deflector 13 is closer to the condenser 11 than the fan 12. This results in a smaller gap between the wind deflector 13 and the condenser 11, making it less likely for wind to blow from the area between the wind deflector 13 and the condenser 11 onto the surface of the condenser 11. The wind deflector 13 can minimize the amount of wind blown by the fan 12 from reaching the blocked part of the condenser 11, thus providing a better wind deflection effect. This allows the wind speed of the wind passing through the part of the condenser 11 that is not blocked by the wind deflector 13 to be increased as much as possible, and the part of the condenser 11 that is not blocked by the wind deflector 13 to be cleaned more thoroughly.

[0060] It should be noted that during the normal exhaust process of the outdoor unit of the air conditioner, the fan 12 rotates forward, and air flows from the condenser 11 to the fan 12. Figure 1 (In the direction indicated by the middle arrow A), the condenser 11 exchanges heat with the passing air. During the cleaning process of the condenser 11, the fan 12 reverses direction, and air flows from the fan 12 to the condenser 11 (…). Figure 1 (In the direction indicated by the middle arrow B), and the flowing air can carry away dust particles on the surface of the condenser 11. That is to say, in this embodiment, the normal exhaust operation of the outdoor unit of the air conditioner and the dust removal operation of the condenser 11 are completed by the forward and reverse rotation of the same fan 12, without the need to increase the number of fans 12, thus saving production and manufacturing costs.

[0061] Optionally, the number of wind deflectors 13 can be one, two, three, etc.

[0062] Figure 2 For a structural diagram of the windbreak device 13 provided in this embodiment when there are two devices, please refer to [the diagram]. Figure 2 ,exist Figure 2 In this design, there are two wind deflectors 13. For ease of description, the two wind deflectors 13 are named the first wind deflector 131 and the second wind deflector 132, respectively. The condenser 11 includes a first part 111 and a second part 112 that are connected to each other. The first wind deflector 131 can shield the first part 111, and the second wind deflector 132 can shield the second part 112. That is, when the first wind deflector 131 and the second wind deflector 132 simultaneously shield the condenser 11, the shielding area of ​​the first wind deflector 131 and the shielding area of ​​the second wind deflector 132 can completely shield the part of the condenser 11 exposed to the wind field of the fan 12.

[0063] In practical applications, when the first wind deflector 131 blocks the first part 111, the second wind deflector 132 will not block the second part 112. In this way, the second part 112 of the condenser 11 will be exposed to the wind field of the fan 12, so that all the air blown out by the fan 12 passes through the second part 112 of the condenser 11, and the fan 12 can perform sufficient dust removal on the surface of the second part 112 of the condenser 11.

[0064] Similarly, when the second wind deflector 132 blocks the second part 112, the first wind deflector 131 will not block the first part 111. In this way, the first part 111 of the condenser 11 is exposed to the wind field of the fan 12, so that all the air blown out by the fan 12 passes through the first part 111 of the condenser 11, and the fan 12 can perform sufficient dust removal on the surface of the first part 111 of the condenser 11.

[0065] Understandably, in practical applications, the dust removal system 1 controls the first wind deflector 131 and the second wind deflector 132 to intermittently block different parts of the condenser 11, so that the air blown by the fan 12 is directed to different parts of the condenser 11, and the wind speed passing through different parts of the condenser 11 is increased, thereby performing more thorough dust removal operations on different parts of the condenser 11.

[0066] Optionally, when there are multiple wind deflectors 13, the shielding area of ​​the multiple wind deflectors 13 covers the entire condenser 11. Similar to the two cases of wind deflectors 13 mentioned above, in practical applications, multiple wind deflectors 13 can intermittently shield different parts of the condenser 11, so that the parts of the condenser 11 exposed to the wind field of the fan 12 can be subjected to the blowing action of the wind, thereby performing more thorough dust removal operations on different parts of the condenser 11.

[0067] Optionally, when there are multiple wind deflectors 13, only one wind deflector 13 can be controlled at a time to block a portion of the condenser 11, or two or three equal numbers of wind deflectors 13 can be controlled at a time to block a portion of the condenser 11. The key is to ensure that there are unblocked portions of the condenser 11.

[0068] Optionally, when there are multiple wind deflectors 13, the shielding areas of the multiple wind deflectors 13 correspond one-to-one with the multiple dust-to-be-cleaned parts in the condenser 11. That is, the areas shielded by the multiple wind deflectors 13 correspond to different dust-to-be-cleaned parts in the condenser 11, and the shielding areas of the multiple wind deflectors 13 do not overlap with each other. This ensures that the shielding areas of the multiple wind deflectors 13 cover the entire part of the condenser 11 while reducing the number of wind deflectors 13 used.

[0069] Figure 3 This is a schematic diagram of the structure of the wind deflector 13 provided in this embodiment when it does not block the condenser 11. Figure 4 This is a schematic diagram of the structure of the windbreak device 13 provided in this embodiment when it blocks the condenser 11. Figure 5 This is a schematic diagram of the structure of the shield 134 provided in this embodiment being wound onto the connecting shaft 133. Please refer to... Figures 3-5 In this embodiment, the windbreak device 13 includes a connecting shaft 133, a shield 134, and a drive motor 135. The shield 134 is connected to the connecting shaft 133, and the output shaft of the drive motor 135 is connected to the connecting shaft 133 for transmission.

[0070] Alternatively, the drive motor 135 can be mounted on the condenser 11. Or, the drive motor 135 can also be mounted on the housing of the outdoor unit of the air conditioner.

[0071] In practical applications, when the drive motor 135 is started, the output shaft of the drive motor 135 will drive the connecting shaft 133 to rotate. During the rotation of the connecting shaft 133, the shielding body 134 will rotate, and the shielding body 134 will either roll up onto the connecting shaft 133 or gradually unfold from the connecting shaft 133.

[0072] by Figure 5 For example, in Figure 5 When the connecting shaft 133 rotates counterclockwise, the shield 134 on the connecting shaft 133 will gradually unfold and eventually cover the surface of the condenser 11. Figure 4 (as shown in the diagram), to block the air blown by the fan 12 from passing through the blocked portion of the condenser 11. And... Figure 5 When the connecting shaft 133 rotates clockwise, the shield 134 will gradually roll up onto the connecting shaft 133 and eventually completely wrap around the connecting shaft 133. Figure 3(as shown in the diagram), thereby exposing the unshielded portion of the condenser 11 to the airflow of the fan 12.

[0073] Please refer to Figures 3-5 In this embodiment, the windbreak device 13 further includes a hanger 136, which is mounted on the shield 134. Thus, during the unfolding of the shield 134, the hanger 136 pulls the shield 134 downwards under the weight of the hanger 136, thereby increasing the unfolding rate of the shield 134 and improving the overall dust removal efficiency of the dust removal system 1. Furthermore, the hanger 136 pulling the shield 134 also prevents the shield 134 from becoming wrinkled and unable to unfold smoothly.

[0074] Understandably, under the weight of the boom 136, the portion of the shield 134 located above the boom 136 can be fully deployed, combined with... Figure 5 In this embodiment, the boom 136 is located on the lowest edge of the shield 134. Therefore, the boom 136 can fully extend all parts of the shield 134, thereby improving the wind-blocking effect of the shield 134.

[0075] It is worth noting that in this embodiment, the shield 134 is a flexible membrane structure. This allows the shield 134 to not only provide good wind protection when unfolded, but also to be more easily rolled up onto the connecting shaft 133. Furthermore, the flexible membrane structure of the shield 134 is lightweight, ensuring that the overall weight of the air conditioner outdoor unit is not excessively increased, thus facilitating its transportation and relocation.

[0076] Alternatively, in other embodiments, the shield 134 may also be a chain plate structure, flexible fabric, etc.

[0077] This embodiment also provides an air conditioner that includes the aforementioned outdoor unit and possesses all the functions of the outdoor unit. Generally, the air conditioner also includes an indoor unit, which is interconnected with the outdoor unit to achieve the function of regulating indoor temperature.

[0078] Figure 6 This is a flowchart of the dust removal method provided in this embodiment. Please refer to it. Figure 6 This embodiment also provides a dust removal method, which can be implemented using the aforementioned dust removal system 1. Specifically, the dust removal method includes:

[0079] S31: Control the wind deflector 13 to shield a part of the condenser 11.

[0080] S32: Control the fan 12 to blow air toward the condenser 11.

[0081] In this embodiment, step S31 can be understood as the controller controlling the motor to start, the connecting shaft 133 rotating, and the shield 134 wound on the connecting shaft 133 unfolding. The unfolded shield 134 shields a portion of the condenser 11. The air blown by the fan 12 cannot pass through the shielded portion of the condenser 11. Therefore, the air blown by the fan 12 towards the condenser 11 will all pass through the part of the condenser 11 that is not shielded by the wind deflector 13. Thus, the wind speed of the part of the condenser 11 that is not shielded by the wind deflector 13 is relatively high. The higher wind speed can carry more dust particles away from the condenser 11, making the surface of the condenser 11 more thoroughly cleaned.

[0082] Figure 7 The flowchart illustrates the dust removal method when the number of windbreak devices 13 provided in this embodiment is two. Please refer to... Figure 7 and combined Figure 2 This embodiment also provides a dust removal method, which can also be implemented using the aforementioned dust removal system 1. Two wind-blocking devices 13 are respectively named first wind-blocking device 131 and second wind-blocking device 132. The condenser 11 includes a first part 111 and a second part 112. Both the first wind-blocking device 131 and the second wind-blocking device 132 are disposed between the condenser 11 and the fan 12. The first wind-blocking device 131 and the second wind-blocking device 132 correspond to the first part 111 and the second part 112, respectively; that is, the first wind-blocking device 131 can block the first part 111, and the second wind-blocking device 132 can block the second part 112.

[0083] Specifically, please refer to Figure 7 The dust removal method includes:

[0084] S33: Control the first windbreak device 131 to block the first part 111.

[0085] S34: Control the second windbreak device 132 to expose the second part 112 to the wind field of the fan 12.

[0086] S35: Control the fan 12 to blow air toward the condenser 11.

[0087] S36: After a first preset time, control the second wind deflector 132 to block the second part 112, and control the first wind deflector 131 to expose the first part 111 to the wind field of the fan 12.

[0088] S37: Control the fan 12 to continue blowing air toward the condenser 11 for a second preset duration.

[0089] Understandably, after step S35, the first part 111 is blocked by the first wind deflector 131, and the air blown by the fan 12 passes entirely through the second part 112, effectively removing dust particles from the surface of the second part 112 and cleaning its surface. After step S36, the second part 112 is blocked by the second wind deflector 132, and the air blown by the fan 12 passes entirely through the first part 111, effectively removing dust particles from the surface of the first part 111 and cleaning its surface.

[0090] Thus, after steps S33, S34, S35 and S36, the first part 111 and the second part 112 in the condenser 11 can complete the dust removal operation in sequence, thereby realizing the complete dust removal operation of the entire condenser 11.

[0091] In this embodiment, controlling the first windbreak device 131 to block the first part 111 in step S33 can be understood as controlling the drive motor 135 in the first windbreak device 131 to rotate forward, and driving the blocking body 134 to unfold through the connecting shaft 133 to block the first part 111.

[0092] In this embodiment, controlling the first windbreak device 131 in step S36 to expose the first part 111 to the wind field of the fan 12 can be understood as controlling the drive motor 135 in the first windbreak device 131 to reverse, and driving the shield 134 to be rolled up on the connecting shaft 133 through the connecting shaft 133, thereby exposing the first part 111 to the wind field of the fan 12.

[0093] In this embodiment, controlling the second windbreak device 132 to block the second part 112 in step S36 can be understood as controlling the drive motor 135 in the second windbreak device 132 to rotate forward, and driving the blocking body 134 to unfold through the connecting shaft 133 to block the second part 112.

[0094] It should be noted that after step S36, step S37 is executed, so that after the second preset time, the fan 12 can perform sufficient dust removal on the first part 111.

[0095] Please refer to Figure 7 After step S37, the dust removal method further includes:

[0096] S38: After the second preset time, control the fan 12 to stop.

[0097] Understandably, after the second preset time, the fan 12 removes dust from both the first part 111 and the second part 112, completing the overall dust removal operation of the condenser 11. After the dust removal is completed, the fan 12 is stopped, which can prepare for the subsequent exhaust operation of the fan 12.

[0098] The inventors discovered that if the first and second preset durations are too long, the fan 12 will run for an excessively long time, wasting energy, increasing operating costs, and shortening its lifespan. Conversely, if the first and second preset durations are too short, the fan 12 will blow air onto the condenser 11 for a shorter time, resulting in less dust particles being carried away by the blown air and poor cleaning of the condenser 11. Therefore, it is necessary to limit the first and second preset durations within a certain range.

[0099] Specifically, in this embodiment, the first preset duration is T1, where 15s ≤ T1 ≤ 300s. The second preset duration is T2, where 15s ≤ T2 ≤ 300s. This saves energy, extends the service life of the fan 12, and ensures that dust particles on the condenser 11 are fully carried away by the air blown out by the fan 12, thus improving the cleaning effect of the condenser 11.

[0100] Optionally, the first preset duration T1 can be 15s, 100s, 300s, etc.

[0101] Optionally, the second preset duration T2 can be 15s, 100s, 300s, etc.

[0102] In summary, this embodiment provides a dust removal system 1, a method, an outdoor air conditioning unit, and an air conditioner, which more thoroughly cleans dust particles from the surface of the condenser 11 and improves the cleaning effect on the condenser 11.

[0103] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A dust extraction system characterised in that, Comprise: a condenser (11); a fan (12) for blowing air towards the condenser (11); a wind shielding device (13) arranged between the condenser (11) and the fan (12), the wind shielding device (13) being used to shield a part of the condenser (11) so that the air blown by the fan (12) flows through another part of the condenser (11); the wind shielding device (13) comprises a connecting shaft (133), a shielding body (134) connected with the connecting shaft (133), and a driving motor (135) whose output shaft is in transmission connection with the connecting shaft (133), the driving motor (135) being used to drive the connecting shaft (133) to rotate so that the shielding body (134) is wound on or unwound from the connecting shaft (133), and the shielding body (134) is used to shield a part of the condenser (11) when unwound.

2. The dust extraction system of claim 1, wherein, The wind shielding device (13) further comprises a boom (136) mounted on the shielding body (134), the boom (136) being used to pull the shielding body (134) to assist the shielding body (134) to be unwound from the connecting shaft (133).

3. The dust extraction system of claim 1, wherein, The shielding body (134) is a flexible film-like structure.

4. Dust extraction system according to any of claims 1-3, characterized in that The wind shielding device (13) is close to the condenser (11) relative to the fan (12).

5. A dust extraction system according to any one of claims 1 to 3, wherein, The number of the wind shielding devices (13) is two, one of which is used to shield a part of the condenser (11) and the other is used to shield another part of the condenser (11).

6. A dust extraction system according to any one of claims 1 to 3, wherein, The number of the wind shielding devices (13) is multiple, and the shieldable areas of the multiple wind shielding devices (13) cover all parts of the condenser (11).

7. The dust extraction system of claim 6, wherein, The shieldable areas of the multiple wind shielding devices (13) correspond to multiple dust removal parts in the condenser (11) one by one.

8. An air conditioner outdoor unit characterized by comprising: The dust removal system (1) of any one of claims 1-7.

9. An air conditioner characterized by comprising: The outdoor unit of claim 8.

10. A method of dedusting, characterized in that, The dust removal method is applied to a dust removal system, the dust removal system comprising a condenser (11), a fan (12) and a wind shielding device (13), the wind shielding device (13) being arranged between the condenser (11) and the fan (12), the wind shielding device (13) comprising a connecting shaft (133), a shielding body (134) and a driving motor (135), the shielding body (134) being connected with the connecting shaft (133), an output shaft of the driving motor (135) being in driving connection with the connecting shaft (133), the driving motor (135) being used to drive the connecting shaft (133) to rotate, so that the shielding body (134) is wound on or unwound from the connecting shaft (133), and the shielding body (134) is used to shield a part of the condenser (11) when unwound; the dust removal method comprising: controlling the wind shielding device (13) to shield a part of the condenser (11); controlling the fan (12) to blow wind towards the condenser (11).

11. A method of dedusting, characterized in that, The dust removal method is applied to a dust removal system, the dust removal system comprising a condenser (11), a fan (12) and a wind shielding device (13), the condenser (11) comprising a first part (111) and a second part (112), the wind shielding device (13) comprising a connecting shaft (133), a shielding body (134) and a driving motor (135), the shielding body (134) being connected with the connecting shaft (133), an output shaft of the driving motor (135) being in driving connection with the connecting shaft (133), the driving motor (135) being used to drive the connecting shaft (133) to rotate, so that the shielding body (134) is wound on or unwound from the connecting shaft (133), and the shielding body (134) is used to shield a part of the condenser (11) when unwound; the number of the wind shielding devices (13) is two, which are a first wind shielding device (131) and a second wind shielding device (132), the first wind shielding device (131) and the second wind shielding device (132) are both arranged between the condenser (11) and the fan (12), and the first wind shielding device (131) and the second wind shielding device (132) correspond to the first part (111) and the second part (112) respectively; the dust removal method comprising: controlling the first wind shielding device (131) to shield the first part (111); controlling the second wind shielding device (132) to expose the second part (112) in a wind field of the fan (12); controlling the fan (12) to blow wind towards the condenser (11); after a first preset time length, controlling the second wind shielding device (132) to shield the second part (112), and controlling the first wind shielding device (131) to expose the first part (111) in the wind field of the fan (12); controlling the fan (12) to continue blowing air toward the condenser (11) for a second preset time length.

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