Fresh air duct, clothes treatment apparatus, and control method

Abstract

The present application relates to the field of clothes processing equipment, and discloses a fresh air air duct, clothes processing equipment and a control method, the fresh air air duct comprises an air duct shell, an air door, a flexible filter screen and a connecting piece, the air duct shell is provided with an air inlet and an air outlet, the air door and the flexible filter screen are sequentially arranged at the air inlet along the fresh air inlet direction, and the connecting piece is connected between the air door and the flexible filter screen, wherein the air door, the flexible filter screen and the connecting piece are configured so that the flexible filter screen can deform under the action of wind pressure, drive the connecting piece to displace, the connecting piece drives the air door to open the air inlet, the flexible filter screen can restore the deformation under the action of no wind pressure, eliminate the force of the connecting piece on the air door, and the air door can reset to close the air inlet. The fresh air air duct can automatically realize the opening and closing function of the air door by starting and stopping the fan, without additionally setting a motor to drive, and the opening and closing control of the fresh air air duct on the air door is more rapid.

Description

Technical Field

[0001] This invention relates to the field of clothing processing equipment technology, and in particular to a fresh air duct, clothing processing equipment and control method. Background Technology

[0002] In the field of garment processing equipment, taking washer-dryers as an example, firstly, most washer-dryers do not have a fresh air introduction structure, which restricts air circulation during the drying process and makes it difficult to further improve drying efficiency. Secondly, although some washer-dryers are equipped with fresh air inlets, the fresh air inlets are always fully open, which can easily lead to foreign objects entering the air duct and affect the normal operation of the equipment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the technical problems of limited air circulation during the drying process of existing washer-dryers, which makes it difficult to improve drying efficiency, and the fresh air inlet being in a fully open state for a long time, which easily leads to foreign objects entering the air duct and affecting the normal operation of the equipment. To this end, a fresh air duct, clothing processing equipment and control method are provided.

[0004] This invention aims to provide a new type of air duct, comprising:

[0005] A duct housing having an air inlet and an air outlet;

[0006] The damper and the flexible filter are arranged sequentially inside the air inlet along the fresh air intake direction;

[0007] A connector, which connects the damper and the flexible filter screen;

[0008] The damper, the flexible filter, and the connector are configured such that the flexible filter deforms under wind pressure, and the connector drives the damper to open the air inlet.

[0009] The flexible filter recovers its deformation under no wind pressure, and the damper resets to close the air inlet.

[0010] In some embodiments, the outer periphery of the flexible filter is connected to the inner wall of the air inlet, and the damper is rotatably connected to the inner wall of the air inlet.

[0011] The connector is constructed as a long strip structure, with one end connected to the flexible filter screen near the central axis of the air inlet, and the other end connected to the opening and closing end of the damper.

[0012] In some embodiments, one or more dampers are provided, and the dampers are rotatably connected to the air inlet via a vertically arranged rotating shaft. An elastic element is provided on the rotating shaft, and one end of the elastic element abuts against the damper to reset the damper and close the air inlet.

[0013] In some embodiments, one or more dampers are provided, and the dampers are rotatably connected to the air inlet via a horizontally arranged pivot. The dampers reset and close the air inlet by their own gravity.

[0014] In some embodiments, a fan section is provided, and the fan section is connected to the air outlet.

[0015] The inlet end of the fan section is connected to an air inlet section, and the outlet end of the fan section is connected to the air inlet section via a heating section.

[0016] The outlet end of the fan section is connected to an air outlet section, on which an upper air outlet and a lower air outlet are formed in a vertical direction.

[0017] In some embodiments, a garment processing apparatus is provided, comprising:

[0018] The aforementioned new air duct.

[0019] In some embodiments, a garment processing apparatus is provided, comprising:

[0020] The aforementioned fresh air duct;

[0021] The garment processing drum has an inlet end connected to the outlet end of the air inlet section, an upper air outlet connected to the upper inlet end of the garment processing drum, and a lower air outlet connected to the lower inlet end of the garment processing drum.

[0022] The housing contains the clothing processing tube, and the air inlet of the fresh air duct penetrates the rear wall of the housing and communicates with the external environment of the housing.

[0023] In some embodiments, a control method for the above-described garment processing equipment is provided, comprising:

[0024] Control the garment processing equipment to switch to fresh air mode;

[0025] The fresh air mode includes: controlling the fan of the clothing processing equipment to start working, the flexible filter screen deforms under wind pressure, and the air inlet is opened by the air damper through the connector, and maintained for a first preset time interval;

[0026] The fan of the garment processing equipment is controlled to stop working, the flexible filter screen recovers its deformation under no wind pressure, and the damper can reset and close the air inlet, maintaining the second preset time interval.

[0027] The garment processing equipment is controlled to start and stop working alternately in sequence.

[0028] In some embodiments, after the laundry processing device completes the washing program...

[0029] If it is determined that the clothing processing equipment has not been turned on within a third preset time interval, then it is further determined whether the ambient humidity exceeds a preset ambient humidity.

[0030] If the result is negative, the clothing processing equipment will be switched to fresh air mode.

[0031] In some embodiments, the control method further includes: a termination phase;

[0032] The suspension phase occurs after the fresh air mode is activated;

[0033] The suspension phase includes: determining whether the fresh air mode should be temporarily terminated based on whether the fresh air mode has reached the preset working time;

[0034] If the fresh air mode reaches the preset working time, the fresh air mode will be temporarily stopped.

[0035] Whether to restart the fresh air mode depends on whether the preset duration of the temporary end of the fresh air mode has been reached.

[0036] If the duration of the temporary end of the fresh air mode reaches the preset duration of the temporary end, then the fresh air mode is restarted.

[0037] During the suspension phase, it is determined whether the door of the clothing processing equipment has been opened;

[0038] If the determination is yes, then control the clothing processing device to end the fresh air mode.

[0039] The new air duct provided by this invention has the following advantages compared with the prior art:

[0040] By installing a flexible filter screen on the inner circumference of the air inlet, the fresh air duct in this embodiment forms a linkage structure through the transmission connection of the flexible filter screen, connectors, and damper. When the fan is running, the flexible filter screen deforms under the action of wind pressure, causing the damper to open and ensuring that fresh air is smoothly introduced into the fresh air duct. When the fan stops, the flexible filter screen automatically returns to its original shape, and the damper automatically closes. This linkage structure can automatically realize the opening and closing function of the damper through the start and stop of the fan, without the need for an additional motor to drive it, simplifying the control mechanism of the fresh air duct. While reducing production costs, it also makes the opening and closing control of the damper of the fresh air duct faster. Attached Figure Description

[0041] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0042] Figure 1 This is a schematic diagram of the fresh air duct structure shown in an embodiment of the present invention;

[0043] Figure 2 This is a side sectional view of a fresh air duct (with the air inlet closed by a damper) as shown in an embodiment of the present invention;

[0044] Figure 3 This is a side sectional view of the fresh air duct (with the air inlet open by the damper) shown in an embodiment of the present invention;

[0045] Figure 4 yes Figure 2 Enlarged top view of the fresh air duct (with the air inlet closed by the damper);

[0046] Figure 5 yes Figure 3 Enlarged top view of the fresh air duct (with the air inlet open at the damper);

[0047] Figure 6 This is a schematic diagram of the fresh air duct structure shown in an embodiment of the present invention;

[0048] Figure 7 This is a schematic diagram of a partial structure of the fresh air duct shown in an embodiment of the present invention;

[0049] Figure 8 This is a schematic diagram showing the connection between the fresh air duct and the clothing processing drum in an embodiment of the present invention;

[0050] Figure 9 This is a schematic diagram of the clothing processing equipment structure shown in an embodiment of the present invention;

[0051] Figure 10 This is one of the control method flowcharts shown in the embodiments of the present invention;

[0052] Figure 11 This is the second flowchart of the control method shown in the embodiment of the present invention;

[0053] Figure 12 This is the third flowchart of the control method shown in the embodiment of the present invention.

[0054] In the diagram: 1-Duct housing, 101-Air inlet, 2-Air damper, 3-Flexible filter, 4-Connector, 5-Elastic component, 6-Heating section, 7-Fan section, 701-Connection port, 8-Air outlet section, 801-Upper air outlet, 802-Lower air outlet, 9-Clothes handling drum, 10-Air inlet section, 11-Box body.

[0055] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0056] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] Most washer-dryers lack a fresh air intake structure, resulting in limited air circulation during the drying process and hindering further improvements in drying efficiency. Secondly, while some washer-dryers do have fresh air vents, these vents are often kept fully open, allowing foreign objects to enter the air ducts and affecting the normal operation of the equipment.

[0059] Based on this, the following embodiments are proposed:

[0060] Example 1

[0061] like Figure 1-5 As shown, this embodiment provides a fresh air duct, including:

[0062] The air duct housing 1 has an air inlet 101 and an air outlet;

[0063] Air damper 2 and flexible filter screen 3 are arranged sequentially in the air inlet 101 along the fresh air intake direction;

[0064] Connector 4, which connects the damper 2 and the flexible filter screen 3;

[0065] The damper 2, the flexible filter 3, and the connector 4 are configured such that the flexible filter 3 deforms under wind pressure, and the connector 4 drives the damper 2 to open the air inlet 101.

[0066] The flexible filter 3 recovers its deformation under no wind pressure, and the damper 2 resets and closes the air inlet 101.

[0067] In this embodiment, the fresh air duct can be installed in a garment processing device or other drying equipment. Its core structure includes a duct housing 1, an air damper 2, a flexible filter 3, and a connector 4. The duct housing 1 is provided with an air inlet 101 and an air outlet for the flow of fresh air. The air damper 2 and the flexible filter 3 are arranged sequentially at the air inlet 101 along the fresh air intake direction. The connector 4 connects the air damper 2 and the flexible filter 3. Fresh air enters the fresh air duct through the air damper 2 and the flexible filter 3. The duct housing 1 can be made of high-temperature resistant and wear-resistant ABS engineering plastic. Its shape can be set as a strip structure with branches. The air inlet 101 is opened at one end of the duct housing 1, and the air outlet is opened at the other end. Fresh air enters the interior of the garment processing device through the duct housing 1, ensuring smooth airflow. The air damper 2 is set as a plate structure. The shape and size of the plate structure match the air inlet 101, so that the air damper 2 can completely cover the air inlet 101. The damper 2 is rotatably connected to the air inlet 101 via a pivot shaft mounted on the inner wall of the duct housing 1. Both ends of the pivot shaft are fixed to the inner wall of the duct housing 1 via bearings. The flexible filter 3 can be made of a material with good flexibility and breathability. The shape of the flexible filter 3 matches the shape of the inner circumference of the duct housing 1, allowing it to cover the flow section of the air inlet 101. The length and width of the flexible filter 3 are both greater than the length and width of the air inlet 101, and the sides of the flexible filter 3 are fixed to the inner wall of the air inlet 101 of the duct housing 1. The flexible filter 3 is connected to the damper 2 via a connector 4. One end of the connector 4 can be attached to or fixedly bonded to a position near the center of the flexible filter 3. This position has a larger displacement than other positions of the flexible filter 3, which can more efficiently pull the damper 2 open. The other end of the connector 4 is connected to the opening and closing end of the damper 2. The design of the flexible filter 3 can not only effectively filter foreign objects, but also automatically adjust its shape when the fan is running, so as to avoid affecting the fresh air introduction efficiency due to filter blockage.

[0068] Preferably, the area of ​​the air inlet 101 is set to be larger than the area of ​​the air outlet, which can accelerate the flow rate of fresh air entering the air duct shell 1 to a certain extent, thereby ensuring that there is a sufficient supply of fresh air in the air duct shell 1; the damper 2 and the rotating shaft can both be made of metal or polymer materials, and the connector 4 can be a linear structure, a filamentous structure, and the material can be fiber, polymer material, etc., so that the connector 4 can be a fibrous linear or filamentous structure, and the shape of the damper 2 matches the shape of the air inlet 101, for example, it can be set as a rectangular plate structure or a circular plate structure, etc.; the flexible filter screen 3 can be made of polyester fiber material.

[0069] Specifically, the fresh air duct is installed in the clothing processing equipment with a fan. When the fan is started, the wind pressure generated inside the duct shell 1 acts on the flexible filter screen 3. At this time, there is negative wind pressure on the left side of the flexible filter screen 3 and positive wind pressure on the right side. Under the action of the wind pressure, the flexible filter screen 3 is concave away from the air door 2. The deformation of the flexible filter screen 3 caused by the concavity will drive the connecting piece 4 to move in the concave direction. During the movement, the connecting piece 4 will drive the air door 2 to rotate around the axis in the direction of the flexible filter screen 3, thereby opening the air inlet 101. At this time, the fresh air from the outside will be introduced into the duct through the air inlet 101. When the fan stops working, the air pressure in the duct disappears, and the pressure difference on both sides of the damper 2 also disappears. The flexible filter 3, without the air pressure, returns to its original shape towards the damper 2 and resumes its downward position, isolating the external environment and preventing foreign objects from entering the duct. The connector 4 is no longer under the tension of the flexible filter 3, and the tension on the damper 2 also disappears. The damper 2 can then begin to rotate downwards under its own weight to reset until the air inlet 101 is closed. Because the force required to deform the flexible filter 3 is relatively small, its presence allows for more thorough and sensitive sensing of the pressure difference on both sides, resulting in a faster opening and closing response of the damper 2. Simultaneously, the flexible filter 3 serves both as a filter element to filter the airflow entering the duct and as a transmission element to control the opening and closing of the damper 2, saving cost and space.

[0070] By installing a flexible filter 3 on the inner circumferential surface of the air inlet 101, the fresh air duct in this embodiment forms a linkage structure through the transmission connection of the flexible filter 3, the connector 4, and the damper 2. When the fan is running, the flexible filter 3 deforms under the action of wind pressure, causing the damper 2 to open, ensuring that fresh air is smoothly introduced into the fresh air duct. When the fan stops, the flexible filter 3 automatically returns to its original shape, and the damper 2 automatically closes. This linkage structure can automatically realize the opening and closing function of the damper 2 through the start and stop of the fan, without the need for an additional motor to drive it, simplifying the control mechanism of the fresh air duct. While reducing production costs, it also makes the opening and closing control of the damper 2 of the fresh air duct faster.

[0071] In this embodiment, after the damper 2 is opened, the air pressure difference on both sides of the damper 2 decreases. At this time, with the fan power remaining unchanged, the opening of the damper 2 is smaller than the initial opening, and the air volume is smaller than when the damper 2 is initially opened. According to the air intake requirements, the opening of the damper 2 and the air intake volume can be kept constant by increasing the fan power.

[0072] In this embodiment, specific data demonstrates that the flexible filter screen 3 can open the damper 2 through the connector 4 under wind pressure;

[0073] The operation of the fan generates a negative pressure of 313-360 Pa at the flexible filter screen 3. The external ambient pressure is 0 Pa, and the air inlet area of ​​the air inlet 101 is 0.0021 m². According to P = F / s, the force exerted by the wind pressure on the flexible filter screen 3 is: Fmin = P × s = 313 Pa × 0.0021 m² = 0.66 N, Fmax = P × s = 360 Pa × 0.0021 m² = 0.76 N. Therefore, the force required to open the damper 2 is designed to be less than 0.66 N, which means that the flexible filter screen 3 can open the damper 2 through the connector 4 under the action of wind pressure.

[0074] The opening force of damper 2 is designed to be less than 0.66N. This includes: if damper 2 closes under its own weight, then the weight of damper 2 is designed to be less than 0.66N, that is, the mass of damper 2 is m = G / g = 0.66N / 9.8m / s 2 =0.067kg, an item of this mass is similar to the weight of a duck egg. It is feasible for those skilled in the art to make the damper 2 less than 0.067kg by using lightweight resin.

[0075] If the damper 2 is closed by the rebound force of the elastic element 5, the rebound force of the elastic element 5 is designed to be less than 0.66N, which means that the flexible filter screen 3 can open the damper 2 through the connector 4 under the action of wind pressure.

[0076] Optionally, in one implementation of this embodiment, such as Figure 2-5 As shown,

[0077] The outer periphery of the flexible filter screen 3 is connected to the inner wall of the air inlet 101, and the damper 2 is rotatably connected to the inner wall of the air inlet 101.

[0078] The connector 4 is constructed as a long strip structure. One end of the connector 4 is connected to the flexible filter 3 near the central axis of the air inlet 101, and the other end is connected to the opening and closing end of the damper 2.

[0079] In this embodiment, the connector 4 is constructed as a long strip structure, with one end connected to the flexible filter 3 near the central axis of the air inlet 101, and the other end connected to the opening and closing end of the damper 2. The long strip structure of the connector 4, with one end fixed to the flexible filter 3 near the central axis of the air inlet 101, ensures that the flexible filter 3 can apply tension evenly to the connector 4 when subjected to wind pressure. The other end of the connector 4 is connected to the opening and closing end of the damper 2 via a pin, ensuring flexibility during relative rotation between the connector 4 and the damper 2. The long strip structure of the connector 4 effectively transmits the tension generated by the deformation displacement of the flexible filter 3 to the damper 2, thereby achieving the opening and closing control of the damper 2.

[0080] Because the deformation of the flexible filter 3 is greatest near the central axis of the air inlet 101 when subjected to wind pressure, connecting one end of the connector 4 to the flexible filter 3 near the central axis of the air inlet 101 allows the connector 4 to have maximum displacement. Therefore, the connector 4 can provide sufficient tension to drive the damper 2 to rotate, ensuring that the damper 2 has a sufficiently large opening and that the fresh air duct can introduce fresh air with high efficiency. The elongated design of the connector 4 gives it flexibility, toughness, and elasticity, making it less prone to breakage under tension and allowing for relatively free displacement in the direction of the tension. Preferably, the connector 4 can be a fiber-like structure or a polymer filament structure, which can transmit forces in the same direction as the damper 2's rotation and absorb forces in different directions during the pulling process. This allows for accurate and reliable control of the opening and closing of the damper 2. Furthermore, the elongated connector 4 is easy to process and install, reducing production costs.

[0081] By designing the connector 4 as a long strip structure and connecting it to the filter screen near the central axis and the opening and closing end of the damper 2, the opening and closing action of the damper 2 can be made more sensitive and the response speed is faster. At the same time, the opening degree of the damper 2 can be made larger, thereby ensuring that the fresh air duct can introduce fresh air with sufficiently high efficiency, and further improving the working stability and reliability of the fresh air duct.

[0082] Optionally, in one implementation of this embodiment, such as Figure 1-5 As shown,

[0083] One or more dampers 2 are provided. The dampers 2 are rotatably connected to the air inlet 101 via a vertically arranged rotating shaft. An elastic element 5 is provided on the rotating shaft. One end of the elastic element 5 abuts against the damper 2 to reset the damper 2 and close the air inlet 101.

[0084] In this embodiment, the number of dampers 2 can be one or more. The rotating shaft is vertically oriented and rotatably connected to the air inlet 101. An elastic element 5 is provided on the damper 2, which is used to reset the damper 2 and close the air inlet 101. The damper 2 is connected to the air inlet 101 via a vertically oriented rotating shaft. This vertical connection makes the rotation of the damper 2 more stable and maintains good sealing during opening and closing. The elastic element 5 can be located on one edge of the damper 2 to ensure that the damper 2 closes promptly after the fan stops. One end of the elastic element 5 is fixed to the edge of the damper 2, and the other end is fixed to the duct housing 1. When the fan starts, the tension applied by the connector 4 to the damper 2 overcomes the elastic force of the elastic element 5. At this time, the elastic element 5 stores elastic potential energy, causing the damper 2 to rotate towards the flexible filter screen 3, thereby opening the air inlet 101 and allowing fresh air from the outside to enter the duct. When the fan stops starting, the elastic element 5 releases its elastic potential energy and applies the force of restoring deformation to the damper 2, causing the damper 2 to fit tightly against the air inlet 101, thereby closing the air inlet 101.

[0085] Preferably, when there are multiple dampers 2, the number of elastic elements 5 corresponds to the number of dampers 2.

[0086] Preferably, the elastic element 5 can be a tension spring, torsion spring or helical spring. The elastic coefficient of the elastic element 5 can be matched and adjusted according to the power of the fan or the size and weight of the damper 2 to adapt to different wind pressure environments and fresh air flow requirements.

[0087] The connection and cooperation between the damper 2, the vertical rotating shaft and the elastic element 5 further improves the sealing performance and reliability of the fresh air duct. The restoring deformation force of the elastic element 5 can ensure that the damper 2 closes in time when the fan stops running, effectively preventing foreign objects from entering the fresh air duct from the air inlet 101, so as to ensure the normal operation of the equipment.

[0088] Optionally, in one implementation of this embodiment, such as Figure 1-5 As shown,

[0089] One or more dampers 2 are provided. The dampers 2 are rotatably connected to the air inlet 101 via a horizontally mounted pivot. The dampers 2 return to their original position and close the air inlet 101 by their own gravity.

[0090] In this embodiment, there can be one or more dampers 2. The rotating shaft is set horizontally and rotatably connected to the air inlet 101. In this embodiment, the damper 2 closes the air inlet 101 by its own weight. The damper 2 can be made of a high-density material, which will give the damper 2 sufficient mass to facilitate its downward rotation under its own weight. Its size matches the air inlet 101. The horizontally set rotating shaft is fixed at both ends to the inner wall of the duct housing 1. The damper 2 is installed at the air inlet 101 through the rotating shaft, allowing it to rotate around the horizontal axis. The horizontal rotating shaft makes the rotation of the damper 2 more stable, and the damper 2 can maintain a stable posture during opening and closing.

[0091] When the fan starts, air pressure is generated in the duct. This air pressure acts on the flexible filter 3, causing the flexible filter 3 to deform and displace the connector 4. The connector 4 then applies tension to the damper 2, causing the damper 2 to rotate around the horizontal axis towards the flexible filter 3, thereby opening the air inlet 101 and allowing fresh air from outside to flow into the duct. When the fan stops working, the air pressure in the duct disappears. Under the action of its own elasticity and gravity, the flexible filter 3 returns to its original shape towards the damper 2. The connector 4 is no longer under the tension of the flexible filter 3, and the tension of the connector 4 on the damper 2 also disappears. Under the action of its own gravity, the damper 2 rotates downward around the horizontal axis, resetting and closing the air inlet 101.

[0092] Preferably, the damper 2 can be made of stainless steel, which increases the damper 2's own weight, thereby accelerating the damper 2's response speed when closing the air inlet 101. The diameter of the rotating shaft can be matched according to the size and weight requirements of the damper 2, thereby reducing the resistance encountered by the damper 2 during rotation.

[0093] By setting the rotating shaft in the horizontal direction, the damper 2 can close the air inlet 101 by its own gravity, eliminating the need for an additional elastic element 5. This simplifies the structure of the fresh air duct and reduces potential failure points. Due to the absence of wear issues associated with the elastic element 5, the failure rate of the damper 2 is significantly reduced, making the equipment more stable and reliable.

[0094] Optionally, in one implementation of this embodiment, such as Figure 6 and 7 As shown, this embodiment provides a fresh air duct, which also includes:

[0095] Fan section 7, wherein a connection port 701 is formed on the fan section 7, and the connection port 701 is connected to the air outlet;

[0096] The inlet end of the fan section 7 is connected to the air inlet section 10, and the outlet end of the fan section 7 is connected to the air inlet section 10 via a heating section 6.

[0097] The outlet end of the fan section 7 is connected to the air outlet section 8, and the air outlet section 8 has an upper air outlet 801 and a lower air outlet 802 arranged in a vertical direction.

[0098] In this embodiment, the connection port 701 on the fan section 7 of the fresh air duct is located on the side of the fan section 7. This connection port 701 is connected to the fresh air duct, and its shape and size match the air outlet of the fresh air duct, ensuring that the flow rate of fresh air exiting the air outlet of the fresh air duct does not decrease when entering the fan section 7. The air outlet of the fresh air duct and the connection port 701 can be sealed together via a flange. A fan is installed inside the fan section 7, providing sufficient air pressure and air volume to the fresh air duct to ensure the fusion and circulation of fresh air and drying air.

[0099] When the fresh air duct is in operation, fresh air enters the duct through the air inlet 101. After passing through the damper 2 and the flexible filter 3, it flows out from the air outlet and into the connection port 701 of the fan section 7. The fan in the fan section 7 then sends the fresh air into the drying system. During the drying process, the fan section 7 provides power to circulate the fresh air and hot drying air in the fresh air duct, thereby improving drying efficiency. The introduced fresh air can prevent clothes from developing odors due to prolonged drying in a closed environment, thus enhancing the drying effect on the clothes.

[0100] Preferably, the fan section 7 can adopt a cylindrical structure and be made of engineering plastic. The diameter and length of the fan section 7 are set according to the actual needs of the fresh air duct. The connection port 701 is opened on the side of the fan section 7, which saves the installation space of the fresh air duct in the vertical direction. The fan in the fan section 7 is a centrifugal fan, and the power of the fan can be set according to the actual needs of the equipment.

[0101] By connecting the fresh air duct to fan section 7, the fresh air duct can fully utilize its automatic opening and closing function. This allows the duct to open and introduce fresh air when the fan is running, and to close promptly when the fan stops, preventing foreign objects from entering the duct and ensuring its normal operation. This design effectively improves the drying efficiency of the fresh air duct, achieving both fresh air introduction and drying air circulation. Since this fresh air duct includes the one described in Example 1, it also possesses all the beneficial effects of the fresh air duct described in Example 1, which will not be elaborated upon here.

[0102] like Figure 6 and 7 As shown, the inlet end of the fan section 7 is connected to the air inlet section 10, and the outlet end of the fan section 7 is connected to the air inlet section 10 via the heating section 6.

[0103] The outlet end of the fan section 7 is connected to the air outlet section 8, and the air outlet section 8 has an upper air outlet 801 and a lower air outlet 802 arranged in a vertical direction.

[0104] In this embodiment, fresh air enters the fan section 7 through the air inlet section 10 and then flows through the heating section 6. At this time, the fresh air is heated and its temperature rises. After passing through the heating section 6, the fresh air enters the air outlet section 8 of the fan section 7. The air outlet section 8 has an upper air outlet 801 and a lower air outlet 802 arranged in a vertical direction. The fresh air flows into the clothes processing drum 9 from the upper air outlet 801 and the lower air outlet 802 respectively.

[0105] One end of the air inlet section 10 is connected to the inlet end of the fan section 7, and the other end is connected to the outlet end. The heating section 6 heats the air flowing through it. Both ends of the heating section 6 are connected to the outlet end of the fan section 7 and the air inlet section 10, respectively, forming a fresh air flow path. One end of the air outlet section 8 is connected to the outlet end of the fan section 7, and the other end has an upper air outlet 801 and a lower air outlet 802, which allows fresh air to flow into the clothes processing drum 9 from the top and bottom at the same time, making the contact between the clothes and the airflow more even and sufficient.

[0106] Preferably, both the air inlet section 10 and the air outlet section 8 can adopt a rectangular duct structure, and both are made of galvanized steel sheet. The flow cross-sectional area of ​​the air outlet section 8 should be larger than that of the air inlet section 10 to ensure that the airflow entering the fan section 7 is not lost. The size and spacing of the upper air outlet 801 and the lower air outlet 802 can be set according to the design requirements of the clothing processing drum 9. The heating section 6 can be a cylindrical structure, with heating wires installed inside to heat the air flowing through it.

[0107] When the fresh air duct is working, the fan section 7 starts up, and air enters from the air inlet section 10. Under the action of the fan in the fan section 7, the air is pressurized by the fan and enters the heating section 6 for heating. The heated air is discharged from the upper air outlet 801 and the lower air outlet 802 of the air outlet section 8 and enters the clothes processing drum 9 to dry the clothes.

[0108] By incorporating an air inlet section 10, a heating section 6, and an air outlet section 8 with an upper air outlet 801 and a lower air outlet 802, the fresh air duct enables the heating and uniform output of air. The heating section 6 improves the drying efficiency of clothes, and the vertical arrangement of the upper air outlet 801 and lower air outlet 802 ensures that the drying air is evenly distributed within the clothes processing drum 9, improving drying uniformity. Simultaneously, the fresh air introduced into the fresh air duct mixes with the circulating heated air within the clothes processing drum 9, improving the drying environment and further enhancing the drying effect.

[0109] Example 2

[0110] like Figure 9As shown, this embodiment provides a garment processing device, including:

[0111] As shown in Example 1, the fresh air duct.

[0112] In this embodiment, the clothing processing equipment is equipped with the fresh air duct of Embodiment 2. By setting the fresh air duct of Embodiment 2 in the clothing processing equipment, efficient drying of clothing is achieved.

[0113] Since the fresh air duct includes the fresh air duct of Embodiment 2, the garment processing equipment also has all the beneficial effects of the fresh air duct of Embodiment 2, which will not be elaborated here.

[0114] Furthermore, such as Figure 8 and 9 As shown, this embodiment provides a garment processing device, including:

[0115] The inlet end of the air inlet section 10 of the clothing processing cylinder 9 is connected to the outlet end of the clothing processing cylinder 9, the upper air outlet 801 is connected to the upper inlet end of the clothing processing cylinder 9, and the lower air outlet 802 is connected to the lower inlet end of the clothing processing cylinder 9.

[0116] The housing 11 contains a clothing processing tube 9, and the air inlet 101 of the fresh air duct penetrates the rear wall of the housing 11 and connects to the external environment of the housing 11.

[0117] In this embodiment, the clothing processing equipment has a housing 11 and a clothing processing cylinder 9. A fresh air duct is installed inside the housing 11. The clothing processing cylinder 9 is cylindrical. The inlet end of the air inlet section 10 is connected to the outlet end of the clothing processing cylinder 9. The upper air outlet 801 is connected to the upper inlet end of the clothing processing cylinder 9, and the lower air outlet 802 is connected to the lower inlet end of the clothing processing cylinder 9. The air inlet 101 of the fresh air duct penetrates through the rear wall of the housing 11 and is connected to the external environment. When the clothing processing equipment performs a drying operation, the fan section 7 of the fresh air duct is activated. Fresh air is introduced through the fresh air duct, mixed with the circulating heated air, and then enters the clothing processing cylinder 9 from the upper air outlet 801 and the lower air outlet 802 of the air outlet section 8 to dry the clothes. An exhaust pipe is provided at the outlet end of the clothing processing cylinder 9. This exhaust pipe can also serve as a vent pipe connecting to the water box. The exhaust pipe is connected to the inlet end of the air inlet section 10 via a flange. The upper and lower parts of the garment processing drum 9 are respectively equipped with air inlet pipes, which are connected to the upper air outlet 801 and the lower air outlet 802 via flanges. The diameter of the exhaust pipe is larger than that of the air inlet pipe to ensure unobstructed airflow within the garment processing drum 9. An external ventilation opening penetrating the rear wall of the housing 11 is provided on the housing 11. The shape and size of the external ventilation opening match the air inlet 101 of the fresh air duct, and a sealing ring is used to achieve a sealed connection between the fresh air duct and the housing 11.

[0118] When the user does not set a drying program and forgets to remove the clothes in time after the current program ends, the clothing processing equipment can detect the presence of clothes through sensors and automatically start the fan and clothing processing drum 9. After the fan starts, the air in the clothing processing drum 9 enters the air inlet section 10 through the exhaust pipe. After being pressurized by the fan section 7, the air enters the upper and lower parts of the clothing processing drum 9 from the upper air outlet 801 and lower air outlet 802 of the air outlet section 8 to form a circulation and circulate the clothes for drying. At the same time, fresh air is introduced through the air inlet 101 of the fresh air duct and mixes with the drying air in the circulation to further improve the drying effect. When fresh air is introduced, the clothing processing drum 9 can rotate and shake the damp clothes to accelerate the evaporation of moisture and thus prevent the clothes from developing odors due to dampness.

[0119] Through the structural design of this garment processing equipment, the drying air can form a good circulation within the garment processing drum 9. The upper air outlet 801 and the lower air outlet 802 are connected to the upper and lower parts of the garment processing drum 9, respectively, ensuring uniform distribution of drying air and improving drying uniformity and efficiency. The air inlet 101 of the fresh air duct penetrates the rear wall of the housing 11, ensuring the smooth introduction of fresh air. When fresh air is introduced, the garment processing drum 9 can rotate and shake the damp clothes, accelerating the evaporation of moisture and thus preventing the clothes from developing odors due to dampness. This garment processing equipment eliminates the traditional air outlet structure, using the vent pipe connected to the water box as the exhaust pipe of the garment processing drum 9 to achieve the exhaust function. This method not only reduces costs and the number of parts, but also improves the stability and reliability of the system. Since this fresh air duct includes the fresh air duct of Embodiment 2, this garment processing equipment also has all the beneficial effects of the fresh air duct of Embodiment 2, which will not be elaborated here.

[0120] Example 3

[0121] like Figure 10 As shown, this embodiment provides a control method for a garment processing device according to Embodiment 2, including:

[0122] Control the garment processing equipment to switch to fresh air mode;

[0123] The fresh air mode includes: controlling the fan of the clothing processing equipment to start working, the flexible filter 3 deforms under the action of wind pressure, and the air inlet 101 is opened by the air damper 2 through the connector 4, and maintained for a first preset time interval;

[0124] The fan of the garment processing equipment is controlled to stop working, the flexible filter screen 3 recovers its deformation under no wind pressure, and the damper 2 can reset and close the air inlet 101, maintaining the second preset time interval.

[0125] The garment processing equipment is controlled to start and stop working alternately in sequence.

[0126] In this embodiment, the control method of the clothing processing device is used to control the clothing processing device in Embodiment 2. The clothing processing device executes the control method through its control motherboard. When executing the control method, the control motherboard first controls the clothing processing device to enter the fresh air mode. In this mode, the control motherboard controls the fan to start working. The flexible filter 3 deforms under the action of wind pressure, causing the connector 4 to move. The connector 4 causes the damper 2 to open the air inlet 101. Maintaining a first preset time interval, fresh air continuously enters the fresh air duct and enters the clothing processing device through the fresh air duct, replacing the internal clothing with fresh air and preventing the clothing from becoming damp and odorous. When the clothing processing device deactivates the fresh air mode, the control motherboard controls the fan to stop working, the flexible filter 3 returns to its original deformation, and the damper 2 resets and closes the air inlet 101. Maintaining a second preset time interval, the control motherboard controls the clothing processing device to start working and stop working alternately in sequence. This achieves that in the fresh air mode, fresh air is periodically introduced into the clothing processing device through the fresh air duct, which not only avoids wasting too much energy but also avoids the generation of odors during the clothing's storage time.

[0127] The specific control process is as follows: When the user activates the fresh air mode of the clothing processing equipment, the control motherboard issues a command to start the fan in fan section 7. After the fan starts, the generated air pressure acts on the flexible filter 3, causing the filter to indent inward, which in turn moves the connector 4. The connector 4 then drives the damper 2 to open the air inlet 101, allowing fresh air from the outside to enter the fresh air duct. When the set fresh air introduction time is reached, the control motherboard issues a command to stop the fan. After the fan stops, due to the disappearance of air pressure, the flexible filter 3 returns to its original shape, the force of the connector 4 on the damper 2 disappears, and the damper 2 resets and closes the air inlet 101 under the action of the elastic element 5 or its own gravity. The closing time is the second preset time interval. This is a single execution procedure in the fresh air mode. By controlling the clothing processing equipment to start and stop work alternately in sequence, multiple execution procedures in the fresh air mode can be achieved.

[0128] This control method automatically opens and closes the fresh air duct damper 2 by controlling the start and stop of the fan, eliminating the need for manual operation by the user and improving the intelligence level of the garment processing equipment. The introduction of the fresh air mode can improve the air environment inside the garment processing drum 9, introducing fresh air during the drying process and improving drying efficiency.

[0129] Optionally, in one implementation of this embodiment, such as Figure 11 As shown,

[0130] After the laundry processing equipment completes the washing program,

[0131] If it is determined that the clothing processing equipment has not been turned on within a third preset time interval, then it is further determined whether the ambient humidity exceeds a preset ambient humidity.

[0132] If the result is negative, the clothing processing equipment will be switched to fresh air mode.

[0133] In this embodiment, the control method further includes a startup phase. Before activating the fresh air mode, the control motherboard first controls the clothing processing device to enter the startup phase. At the start of the startup phase, after the clothing processing device completes the washing program and a preset time has elapsed, the control motherboard detects whether the door of the clothing processing device has been opened and determines whether to activate the fresh air mode based on the ambient humidity according to the detection result.

[0134] Specifically, if the door of the clothing processing equipment has not been opened, it means the clothes have been dried. However, if the user cannot remove the clothes in time for some reason, they need to wait for the user to remove the clothes. During this period, it is necessary to prevent the clothes in the clothing processing drum 9 from developing odors due to residual humid air. Therefore, the control board detects whether the ambient humidity outside the clothing processing equipment exceeds the preset ambient humidity and determines whether to activate the fresh air mode based on the detection result. If the ambient humidity outside the clothing processing equipment is lower than the preset ambient humidity, it means that the humidity of the fresh air introduced is low, which can remove the residual humid air inside the clothing processing equipment, thereby drying the clothes faster and preventing odors. If the ambient humidity outside the clothing processing equipment is higher than the preset ambient humidity, it means that the humidity of the fresh air introduced is high, which will increase the humidity of the air inside the clothing processing equipment. This will make the clothes more humid, increasing the risk of odors caused by residual humid air. Therefore, the fresh air mode cannot be activated.

[0135] Preferably, assuming a preset duration of 30 minutes and a preset ambient humidity of 70%, if the user does not open the door after 30 minutes of the clothing processing equipment's program completion, the system will automatically detect whether the external temperature and humidity meet the fresh air requirements. If the external relative humidity is 70% ≤ %, the system will activate the fresh air program. The fan will start and run continuously for 3 minutes. During this time, the fan will introduce fresh outside air to help remove moisture and odors from inside the washing machine. Simultaneously, the inner drum rotates at a low speed (e.g., alternating between 15 seconds of clockwise rotation and 15 seconds of counter-clockwise rotation). This operating mode helps to evenly distribute air across the load inside the washing machine, improving ventilation and further reducing dampness and odors in the clothes. After 3 minutes of fan operation, the system will enter a 15-minute pause phase. During this period, the fan will stop running, but the system will continue to monitor the external temperature and humidity, preparing for the next stage of fresh air introduction.

[0136] By setting a startup phase, the garment processing equipment can automatically determine whether to activate the fresh air mode based on actual conditions, thereby improving the equipment's intelligence and energy efficiency. When the current process has ended but the user has not yet removed the clothes and the ambient humidity is low, the garment processing equipment can automatically select to activate the fresh air mode to introduce fresh air, which can prevent clothes from developing odors due to dampness. When the ambient humidity is high, the garment processing equipment can automatically select not to activate the fresh air mode to avoid introducing humid air and ensure the effectiveness of garment processing.

[0137] Optionally, in one implementation of this embodiment, such as Figure 12 As shown,

[0138] The control method further includes: a termination phase;

[0139] The suspension phase occurs after the fresh air mode is activated;

[0140] The suspension phase includes: determining whether the fresh air mode should be temporarily terminated based on whether the fresh air mode has reached the preset working time;

[0141] If the fresh air mode reaches the preset working time, the fresh air mode will be temporarily stopped.

[0142] Whether to restart the fresh air mode depends on whether the preset duration of the temporary end of the fresh air mode has been reached.

[0143] If the duration of the temporary end of the fresh air mode reaches the preset duration of the temporary end, the fresh air mode will be restarted.

[0144] Furthermore, during the suspension phase, it is determined whether the door of the clothing processing equipment has been opened;

[0145] If the determination is yes, then control the clothing processing device to end the fresh air mode.

[0146] In this embodiment, the control method further includes a termination phase. After the control motherboard starts the fresh air mode, it controls the clothing processing device to enter the termination phase. When entering the termination phase, the control motherboard detects whether the fresh air mode has reached the preset working time and determines whether the fresh air mode should end based on the detection result.

[0147] Specifically, if the control board detects that the fresh air mode has reached the preset operating time, it will temporarily terminate the fresh air mode. This ensures that the clothes waiting to be removed are properly processed while saving energy for the clothing processing equipment. After the fresh air mode ends, the control board will still determine whether to restart the fresh air mode based on whether the preset temporary end time has been reached. If the control board detects that the preset temporary end time has been reached and the user has not removed the clothes within this period, it will continue to wait for the user to remove the clothes. During this period, it is still necessary to prevent the clothes in the clothing processing drum 9 from developing odors due to residual humid air, so the control board will restart the fresh air mode at this time.

[0148] Preferably, the preset working time is set to 2 hours, and the preset temporary end time is also set to 2 hours. When the fresh air mode is activated, the control board starts timing. When the fresh air mode running time reaches 2 hours, the control board controls the fresh air mode to end, at which point the fan stops running and the damper 2 closes. When the fresh air mode ends, the control board starts timing again. If the temporary end time of the fresh air mode reaches 2 hours and the control board still has not detected the user opening the door, and the ambient humidity outside the clothing processing equipment does not exceed the preset ambient humidity, the control board restarts the fresh air mode. This cycle continues until the user opens the door or the equipment is powered off.

[0149] By setting a shutdown phase, the fresh air mode can operate efficiently. Under unnecessary conditions, the clothing processing equipment automatically selects to stop operating the fresh air mode, thereby reducing the energy consumption of the clothing processing equipment. At the same time, this cyclic start-up control method can continuously keep the air inside the clothing processing drum 9 fresh, preventing clothes from piling up for a long time and producing odors, further improving the user experience.

[0150] During the suspension phase, it is determined whether the door of the clothing processing device is open. If the determination is yes, the clothing processing device is controlled to end the fresh air mode, thereby further ensuring the rationality of the clothing processing device's working procedure.

[0151] In summary, the ingenious design of the fresh air duct and control method in this application lies in:

[0152] First, by installing a flexible filter on the inner circumference of the air inlet, the fresh air duct in this embodiment forms a linkage structure through the transmission connection of the flexible filter, connectors, and damper. When the fan is running, the flexible filter deforms under the action of wind pressure, causing the damper to open and ensuring that fresh air is smoothly introduced into the fresh air duct. When the fan stops, the flexible filter automatically returns to its original shape, and the damper automatically closes. This linkage structure can automatically realize the opening and closing function of the damper through the start and stop of the fan, without the need for an additional motor to drive it, simplifying the control mechanism of the fresh air duct. While reducing production costs, it also makes the opening and closing control of the damper in the fresh air duct faster.

[0153] Secondly, by designing the connector as a long strip structure and connecting it to the filter screen near the central axis and the opening and closing end of the damper, the opening and closing action of the damper can be made more sensitive and the response speed is faster. At the same time, the opening degree of the damper can be made larger, thereby ensuring that the fresh air duct can introduce fresh air with sufficiently high efficiency, and further improving the working stability and reliability of the fresh air duct.

[0154] Third, by setting the rotating shaft horizontally, the damper can close the air inlet by its own gravity, eliminating the need for additional elastic components. This simplifies the structure of the fresh air duct and reduces potential failure points. Due to the absence of wear issues associated with elastic components, the failure rate of the damper is significantly reduced, making the equipment more stable and reliable.

[0155] Fourth, by incorporating an air inlet section, a heating section, and an air outlet section with upper and lower vents, the fresh air duct achieves both heating and uniform air output. The heating section improves drying efficiency, while the vertical arrangement of the upper and lower vents ensures even distribution of drying air within the garment processing drum, enhancing drying uniformity. Simultaneously, the fresh air introduced through the duct mixes with the recirculated, heated air within the drum, improving the drying environment and further enhancing the drying effect.

[0156] Fifth, the structural design of this garment processing equipment allows for efficient air circulation within the processing drum. The upper and lower air outlets connect to the upper and lower parts of the drum, respectively, ensuring uniform air distribution and improving drying uniformity and efficiency. The fresh air inlet penetrates the rear wall of the unit, ensuring smooth intake of fresh air. When fresh air is introduced, the processing drum rotates and shakes the damp garments, accelerating moisture evaporation and preventing odors caused by dampness. This garment processing equipment eliminates the traditional exhaust structure, using the vent pipe connecting to the water tank as both the exhaust pipe and the drum's exhaust pipe. This approach not only reduces costs and the number of components but also improves system stability and reliability.

[0157] Sixth, by setting a startup phase, the garment processing equipment can automatically determine whether to activate the fresh air mode based on actual conditions, thereby improving the intelligence and energy efficiency of the equipment. When the current program has ended but the user has not yet removed the clothes and the ambient humidity is low, the garment processing equipment can automatically select to activate the fresh air mode to introduce fresh air, which can prevent clothes from developing odors due to dampness. When the ambient humidity is high, the garment processing equipment can automatically select not to activate the fresh air mode to avoid introducing humid air and ensure the processing effect on the clothes.

[0158] Seventh, by setting a shutdown phase, the fresh air mode can operate reasonably. Under unnecessary conditions, the clothing processing equipment will automatically select to stop operating the fresh air mode, thereby reducing the energy consumption of the clothing processing equipment. At the same time, this cyclic start-up control method can continuously keep the air inside the clothing processing drum fresh, prevent clothes from piling up for a long time and producing odors, and further improve the user experience.

[0159] It can be further understood that in this disclosure, "many" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0160] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0161] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0162] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims of this application.

[0163] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A novel air duct, characterized in that, include: The air duct housing (1) has an air inlet (101) and an air outlet; A damper (2) and a flexible filter (3) are arranged sequentially in the air inlet (101) along the fresh air intake direction; Connector (4), the connector (4) is connected between the damper (2) and the flexible filter (3); The damper (2), the flexible filter (3) and the connector (4) are configured such that the flexible filter (3) deforms under wind pressure and drives the damper (2) to open the air inlet (101) through the connector (4). The flexible filter (3) recovers its deformation under no wind pressure, and the damper (2) resets and closes the air inlet (101). The outer periphery of the flexible filter (3) is connected to the inner wall of the air inlet (101). The flexible filter (3) covers the flow section of the air inlet (101). The length and width of the flexible filter (3) are both greater than the length and width of the air inlet (101). The damper (2) is rotatably connected to the inner wall of the air inlet (101). The connector (4) is constructed as a long strip structure. One end of the connector (4) is connected to the flexible filter (3) near the central axis of the air inlet (101), and the other end is connected to the opening and closing end of the damper (2).

2. The fresh air duct according to claim 1, characterized in that, One or more dampers (2) are provided. The dampers (2) are rotatably connected to the air inlet (101) via a vertically arranged rotating shaft. An elastic element (5) is provided on the rotating shaft. One end of the elastic element (5) abuts against the damper (2) to reset the damper (2) and close the air inlet (101).

3. The fresh air duct according to claim 1, characterized in that, One or more dampers (2) are provided. The dampers (2) are rotatably connected to the air inlet (101) via a horizontally arranged pivot. The dampers (2) reset and close the air inlet (101) by their own gravity.

4. The fresh air duct according to claim 1, characterized in that, include: A fan section (7) is provided with a connection port (701) which is connected to the air outlet. The inlet end of the fan section (7) is connected to the air inlet section (10), and the outlet end of the fan section (7) is connected to the air inlet section (10) via a heating section (6). The outlet end of the fan section (7) is connected to the air outlet section (8), and the air outlet section (8) has an upper air outlet (801) and a lower air outlet (802) arranged in a vertical direction.

5. A garment processing device, characterized in that, include: The fresh air duct as described in any one of claims 1-3.

6. A garment processing device, characterized in that, include: The fresh air duct as described in claim 4; The clothing processing tube (9) has an inlet end of the air inlet section (10) connected to the outlet end of the clothing processing tube (9), an upper air outlet (801) connected to the upper inlet end of the clothing processing tube (9), and a lower air outlet (802) connected to the lower inlet end of the clothing processing tube (9). The housing (11) contains the clothing processing tube (9) and the air inlet (101) of the fresh air duct penetrates the rear wall of the housing (11) and communicates with the external environment of the housing (11).

7. A control method for the garment processing equipment as described in claim 5 or 6, characterized in that, include: Control the garment processing equipment to switch to fresh air mode; The fresh air mode includes: controlling the fan of the clothing processing equipment to start working, the flexible filter (3) deforms under the action of wind pressure, and the air inlet (101) is opened by the air door (2) through the connector (4) and maintained for a first preset time interval; The fan of the garment processing equipment is controlled to stop working, the flexible filter (3) recovers its deformation under no wind pressure, and the damper (2) can reset and close the air inlet (101) to maintain the second preset time interval; The garment processing equipment is controlled to start and stop working alternately in sequence.

8. The control method according to claim 7, characterized in that, include: After the laundry processing equipment completes the washing program, If it is determined that the clothing processing equipment has not been turned on within a third preset time interval, then it is further determined whether the ambient humidity exceeds a preset ambient humidity. If the result is negative, the clothing processing equipment will be switched to fresh air mode.

9. The control method according to claim 8, Its features are, Includes: a suspension phase; the suspension phase includes: determining whether the fresh air mode should be temporarily terminated based on whether the fresh air mode has reached the preset working time; If the fresh air mode reaches the preset working time, the fresh air mode will be temporarily stopped. Whether to restart the fresh air mode depends on whether the preset duration of the temporary end of the fresh air mode has been reached. If the duration of the temporary end of the fresh air mode reaches the preset duration of the temporary end, then the fresh air mode is restarted. During the suspension phase, it is determined whether the door of the clothing processing equipment has been opened; If the determination is yes, then control the clothing processing device to end the fresh air mode.

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