An air duct structure, an air supply system and a clothes drying machine

Abstract

The application discloses a wind channel structure, an air supply system and a clothes airing machine, which comprise a ventilation pipeline provided with an air inlet interface on one side; and an air uniformizing piece arranged in the ventilation pipeline; a first air guide cavity is arranged in the air uniformizing piece, the first air guide cavity is provided with a first air inlet and a first air outlet, the first air inlet is arranged on the leeward side of the air uniformizing piece, and the first air outlet is arranged downward. The air uniformizing and diffusing function of the wind channel structure can be utilized to uniformly diffuse hot air, the purpose of large-area air outlet drying is achieved, a large air outlet area and a uniform air outlet effect can be ensured on the basis of using a small number of air fans, the drying area is enlarged on the basis of using a low cost, a high heat utilization rate is ensured, the drying speed and the drying uniformity are improved, and the effects are achieved.

Description

Technical Field

[0001] This application relates to the field of clothes drying rack technology, and in particular to an air duct structure, an air supply system, and a clothes drying rack. Background Technology

[0002] Clothes drying racks, as a common household appliance, play an increasingly important role in modern family life. As people's living standards improve and their demands for quality of life continue to rise, the functions and designs of clothes drying racks are constantly being innovated. For example, some smart clothes drying racks have functions such as drying, sterilization, and mite removal, which can effectively remove bacteria and mites from clothes, ensuring the health of family members.

[0003] Existing clothes drying racks with drying functions typically only dry a portion of the area. They usually use a fan to perform localized drying, but the drying area is small and cannot cover the entire area of ​​the drying rack. Therefore, when drying clothes, they need to be hung in a specific location. To increase the drying area, it is necessary to increase the number of fans or use long ventilation ducts to deliver air, utilizing the long, narrow air outlets at the bottom of the duct to achieve a large area of ​​airflow. However, adding fans increases the weight of the drying rack and the cost of its components. If a long ventilation duct is used directly for air delivery, the concentrated airflow from the fan into the duct will result in uneven airflow at different outlets at the bottom of the duct, leading to low heat utilization, slow drying speed, and uneven drying. Summary of the Invention

[0004] The purpose of this application is to provide a duct structure, an air supply system, and a clothes drying rack, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On the one hand, a duct structure is provided, including:

[0007] The ventilation duct has an air inlet on one side.

[0008] An air distribution component is disposed within the ventilation duct; the air distribution component is provided with a first air guide cavity, the first air guide cavity having a first air inlet and a first air outlet, the first air inlet being disposed on the leeward side of the air distribution component, and the first air outlet being disposed downward.

[0009] Optionally, the air distribution element extends along the length of the ventilation duct, and the first air guide cavity extends along the length of the air distribution element.

[0010] Optionally, the wind distribution component includes a windward plate and a leeward plate arranged opposite to each other, and the first air guide cavity is formed between the windward plate and the leeward plate.

[0011] Optionally, the windward surface of the wind-facing plate is an arc-shaped surface.

[0012] Optionally, the windward plate includes a flat plate segment and an arc-shaped plate segment, with the bottom side of the flat plate segment connected to the ventilation duct and the top side connected to the arc-shaped plate segment.

[0013] Optionally, the side of the arc-shaped plate segment facing the first air guide cavity is a perfect circular arc surface.

[0014] Optionally, the distance between the top side of the leeward plate and the arc-shaped plate segment is not less than 5mm.

[0015] Optionally, the planar plate segment is inclined relative to the leeward plate, so that the first air guide cavity extends from the top of the planar plate segment to the first air outlet in a flared state.

[0016] Optionally, the included angle between the planar plate segment and the leeward plate is 5 to 15°.

[0017] Optionally, the distance by which the windward plate extends along the width direction above the first air outlet is L3, and the width of the first air inlet in the horizontal direction is L4, wherein L3:L4≥1:1.

[0018] Optionally, the air distribution component includes support ribs, which are spaced apart along the length of the air distribution component and connect the windward plate and the leeward plate, and the first air guide cavity is formed between each of the support ribs.

[0019] Optionally, the supporting rib includes a rib block and a rib plate, and the air distribution component is provided with a second air guide cavity corresponding to the rib block. The second air guide cavity has a second air inlet and a second air outlet. The second air inlet is located on the windward side of the air distribution component, and the second air outlet is located downward.

[0020] Optionally, the area of ​​the first air inlet is more than three times the area of ​​the second air inlet.

[0021] On the other hand, an air supply system is provided, including the above-mentioned duct structure and a fan, wherein the air outlet of the fan is connected to the air inlet of the ventilation duct.

[0022] On the other hand, a clothes drying rack is provided, including the aforementioned air duct structure.

[0023] The beneficial effects of this application are as follows: This invention provides an air duct structure, an air supply system, and a clothes drying machine, which can be applied to a clothes drying machine to meet the air supply function of the drying module. The air duct structure includes a ventilation duct and an air distribution component. An air inlet is provided on one side of the ventilation duct, through which a fan can be connected. The air distribution component is set inside the ventilation duct, with a first air inlet on its leeward side and a first downward-facing air outlet on its bottom side. When hot drying air is blown into the ventilation duct from the air inlet, the hot drying air will blow towards the windward side of the air distribution component, and under the obstruction of the air distribution component, the hot drying air will spread evenly, so that the hot drying air can spread evenly throughout the entire ventilation duct. After the hot drying air passes over the air distribution component upward, it will blow towards the side of the ventilation duct facing the first air outlet, then turn back and blow towards the first air outlet, and pass through the first air guide cavity of the air distribution component, and finally blow downward from the first air outlet on the bottom side.

[0024] Applying the air duct structure of this solution to a clothes drying rack can achieve the goal of evenly dispersing hot air by utilizing the air duct structure's uniform air diffusion function, thereby achieving large-area air outlet drying. It can ensure a sufficiently large air outlet area and a sufficiently uniform air outlet effect with the use of fewer fans, thereby expanding the drying area at a lower cost, while ensuring high heat utilization, improved drying speed, and drying uniformity. Attached Figure Description

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a three-dimensional structural diagram of the air supply system described in the embodiments of this application;

[0027] Figure 2 This is a top view of the air supply system described in the embodiments of this application;

[0028] Figure 3 This is one of the cross-sectional views of the air supply system described in the embodiments of this application;

[0029] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0030] Figure 5 This is a second cross-sectional view of the air supply system described in the embodiments of this application;

[0031] Figure 6 for Figure 5 Enlarged view of region B in the middle;

[0032] Figure 7 This is a cross-sectional view of the air duct structure described in the embodiments of this application;

[0033] Figure 8A structural diagram of the air duct structure for comparison with Design 1;

[0034] Figure 9 A structural diagram of the air duct structure for comparison with Design 2;

[0035] Figure 10 To compare the front air outlet velocity of the air duct structure in Design 1, see the cloud effect diagram.

[0036] Figure 11 To compare the front air outlet velocity of the air duct structure in Design 2, see the cloud effect diagram;

[0037] Figure 12 This is a frontal view of the airflow velocity cloud effect of the air duct structure according to an embodiment of this application;

[0038] Figure 13 To compare the side air outlet velocity of the air duct structure in Design 1, see the cloud effect diagram;

[0039] Figure 14 To compare the side air outlet velocity of the air duct structure in Design 2, see the cloud effect diagram;

[0040] Figure 15 This is a side-mounted airflow velocity cloud effect diagram of the air duct structure according to an embodiment of this application.

[0041] In the picture:

[0042] 1. Ventilation duct; 11. Air inlet; 2. Air distribution component; 21. First air guide cavity; 22. First air inlet; 23. First air outlet; 24. Windward plate; 241. Flat plate segment; 242. Curved plate segment; 25. Leeward plate; 26. Supporting rib; 261. Rib block; 2611. Second air guide cavity; 262. Rib plate; 3. Fan. Detailed Implementation

[0043] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0049] As people's living standards improve and their demands for quality of life continue to rise, the functions and designs of clothes drying racks are also constantly being innovated. For example, some smart clothes drying racks have functions such as drying, sterilization, and mite removal, which can effectively remove bacteria and mites from clothes and protect the health of family members.

[0050] Existing clothes drying racks with drying functions typically only dry a portion of the area. They usually use a fan to perform localized drying, but the drying area is small and cannot cover the entire area of ​​the drying rack. Therefore, when drying clothes, they need to be hung in a specific location. To increase the drying area, it is necessary to increase the number of fans or use long ventilation ducts to deliver air, utilizing the long, narrow air outlets at the bottom of the duct to achieve a large area of ​​airflow. However, adding fans increases the weight of the drying rack and the cost of its components. If a long ventilation duct is used directly for air delivery, the concentrated airflow from the fan into the duct will result in uneven airflow at different outlets at the bottom of the duct, leading to low heat utilization, slow drying speed, and uneven drying.

[0051] To address the aforementioned issues, this application provides an air duct structure that can diffuse and deliver the hot drying air provided by a single fan to the drying rack below, thereby expanding the drying area, improving drying uniformity, and optimizing the drying effect while using a small number of fans.

[0052] The air duct structure in this embodiment is specifically applied to a clothes drying rack. For ease of understanding, the application of the air duct structure in the clothes drying rack is explained first: The clothes drying rack includes a main unit and a drying rack, which is suspended below the main unit. The main unit integrates a drying module, which includes a fan, a heater, etc. The air duct structure in this embodiment can be integrated into the drying module and is specifically connected to the fan. The fan blows air, and the air is heated by the heater to form drying hot air. The drying hot air is transported to the air duct structure and diffused before being blown downwards from the air outlet on the bottom side of the air duct structure. The downward-blown drying hot air blows onto the clothes suspended below the drying rack, thereby achieving the purpose of drying the clothes.

[0053] Specifically, refer to Figure 1-7 An embodiment of this application provides an air duct structure, comprising:

[0054] Ventilation duct 1, with an air inlet 11 on one side;

[0055] An air distribution component 2 is disposed within the ventilation duct 1. The air distribution component 2 is provided with a first air guide cavity 21, which has a first air inlet 22 and a first air outlet 23. The first air inlet 22 is disposed on the leeward side of the air distribution component 2, and the first air outlet 23 is disposed downward.

[0056] In the application of clothes drying racks, since clothes are hung on the clothes drying rods, the clothes are arranged along the length of the clothes drying rods. In order to adapt to the drying structure and make full use of the drying heat, the ventilation duct 1 should be set along the extension direction of the clothes drying rod below, and the first air outlet 23 of the air distribution component 2 should also be set along the extension direction of the clothes drying rod, so that the drying hot air can be evenly blown to the clothes hanging on the clothes drying rod below through the first air outlet 23 during operation.

[0057] It is understood that in the air duct structure of this application embodiment, except for the air inlet 11 and the air outlet (such as the first air outlet 23), the ventilation duct 1 should be sealed in other locations to avoid unnecessary air leakage. Figure 1-7 In the structure shown, the cover plate on the top of the ventilation duct 1 is not shown for the purpose of showing the internal structure. In actual application, the top side of the ventilation duct 1 should be covered by a cover plate.

[0058] When the air duct structure in this embodiment is applied in a clothes drying machine, the air inlet 11 on one side of the ventilation duct 1 can be connected to the fan 3. The air distribution component 2 is set inside the ventilation duct 1. The leeward side of the component has a first air inlet 22 and the bottom side has a downward-facing first air outlet 23. When the drying hot air is blown into the ventilation duct 1 from the air inlet 11, the drying hot air will blow towards the windward side of the air distribution component 2. Under the obstruction of the air distribution component 2, the drying hot air will spread evenly, so that the drying hot air can spread evenly throughout the entire ventilation duct 1. When the drying hot air passes over the air distribution component 2 upward, it will blow towards the side of the ventilation duct 1 facing the first air outlet 23, then turn back and blow towards the first air outlet 23, and through the first air guide cavity 21 of the air distribution component 2, finally blown downward from the bottom first air outlet 23.

[0059] Applying the air duct structure of this solution to a clothes drying machine can achieve the goal of evenly spreading hot air by utilizing the air duct structure's uniform air diffusion function, thereby achieving large-area air outlet drying. It can ensure a sufficiently large air outlet area and a sufficiently uniform air outlet effect with the use of fewer fans 3, thereby expanding the drying area at a lower cost, while ensuring high heat utilization, improving drying speed and drying uniformity.

[0060] It should be noted that the arrangement of the air distribution element 2 in the ventilation duct 1 in this application embodiment is based on the inventor's creative inventive concept and multiple experimental verifications, and it has significant technical effects. In order to verify the inventiveness of the duct structure in this application embodiment, the following provides two other comparative schemes designed by the inventor during the invention process (i.e., comparative design 1 and comparative design 2) for comparison:

[0061] Reference Figure 8In comparative design 1, an air distribution component 2 is also provided, with its air inlet located on the top side of the air distribution component 2.

[0062] Reference Figure 9 In comparative design 2, an air distribution component 2 is also provided, with its air inlet located on the windward side of the air distribution component 2.

[0063] Figures 10-12 The following diagrams show the airflow effect of the three proposed duct structures from the front (i.e., the elevation parallel to the length of ventilation duct 1):

[0064] Figure 10 To compare the air outlet effect diagram of Design 1, it can be clearly seen from the diagram that the air outlet is more concentrated at both ends of ventilation duct 1, the air outlet in the middle area is weaker, and the air outlet is tilted towards the tail end (right side). Obviously, the uniformity of this air outlet effect is poor.

[0065] Figure 11 To compare the air outlet effect diagram of Design 2, it can be clearly seen from the diagram that the air outlet at the tail end (right side) of ventilation duct 1 is more concentrated, while the air outlet at the front end (left side) is weaker. Moreover, the air outlet is tilted towards the tail end (right side), and the tilt is more obvious than that of Design 1. Obviously, the uniformity of the air outlet effect of this scheme is also poor.

[0066] Figure 12 The diagram shows the air outlet effect of the duct structure provided in the embodiment of this application. It can be clearly seen from the diagram that the air outlet is uniform in each location along the length of the ventilation duct 1, and there is no obvious tilt in the air outlet.

[0067] In summary, the air duct structure provided in this application embodiment has the best uniformity of airflow in the front direction and better verticality of the downward airflow.

[0068] Figures 13-15 The following diagrams show the air outlet effect of the three proposed duct structures from the side (i.e., the elevation perpendicular to the length of ventilation duct 1):

[0069] Figure 13 The diagram shows the air outlet effect of the comparison design 1. It can be clearly seen from the diagram that the drying hot air blows vertically downward from the air outlet and blows directly onto the top surface of the drying rack. Due to the influence of the wall flow of the drying rack and the direction of the mainstream unilateral flow, the airflow is ultimately deflected to the outside (left side).

[0070] Figure 14 The diagram shows the air outlet effect of the comparison design 2. As can be seen from the diagram, due to the influence of the incoming airflow direction and the fact that the air inlet is on the right side of the air outlet, most of the airflow hits the quilt drying rod and is split into two airflows, with most of it flowing above the quilt drying rod.

[0071] Figure 15The diagram shows the air outlet effect of the air-to-the-line structure provided in the embodiment of this application. As can be seen from the diagram, most of the air is evenly dispersed to both sides on the inner side (right side) of the clothes drying rod. The downward diffused airflow can fully contact the clothes hanging on the clothes drying rod, and a very small part flows above the clothes drying rod under the action of the clothes drying rod.

[0072] In summary, the air duct structure provided in this embodiment can more effectively deliver air to the clothes hanging on the clothesline below, resulting in the best drying effect, especially in the lateral direction.

[0073] In one embodiment, the air distribution element 2 extends along the length of the ventilation duct 1, and the first air guide cavity 21 extends along the length of the air distribution element 2.

[0074] In practical applications, the ventilation duct 1 extends along the length of the clothesline. Correspondingly, in this embodiment, the air distribution component 2 and the first air guide cavity 21 both extend along the length of the ventilation duct 1. The drying hot air can be distributed more evenly throughout the ventilation duct 1, allowing the hot air to diffuse and mix more fully within the ventilation duct 1. This ensures that the hot air blown out from the first air outlet 23 can evenly cover the clothes on the entire clothesline below, thereby avoiding the problem of uneven drying.

[0075] In one embodiment, reference is made to Figure 4 The wind distribution component 2 includes a windward plate 24 and a leeward plate 25 arranged opposite to each other, and the first air guide cavity 21 is formed between the windward plate 24 and the leeward plate 25.

[0076] The design of the windward plate 24 and the leeward plate 25 is relatively simple, easy to manufacture and process. At the same time, due to their relative arrangement, cleaning and maintenance of the first air guide cavity 21 are made easier.

[0077] Optionally, the windward plate 24 and the leeward plate 25 are integrally formed on the bottom wall of the ventilation duct 1.

[0078] In one embodiment, the windward surface of the wind-facing plate 24 is an arc-shaped surface.

[0079] The curved surface design allows hot air to flow more smoothly when it comes into contact with the air intake plate 24, reducing wind resistance caused by right angles or acute angles. This helps improve the efficiency of hot air circulation, allowing more hot air to pass over the air intake plate 24 more quickly and enter the first air guide cavity 21, and be evenly blown onto the clothes. The curved surface design also reduces noise generated by collisions or friction during the flow of hot air, which helps improve the quietness and comfort of the clothes dryer during use.

[0080] In one embodiment, the windward plate 24 includes a flat plate segment 241 and an arc-shaped plate segment 242. The bottom side of the flat plate segment 241 is connected to the ventilation duct 1, and the top side is connected to the arc-shaped plate segment 242.

[0081] Specifically, the curved plate segment 242 is on top and the flat plate segment 241 is on the bottom. The drying hot air enters the first air guide cavity 21 through the first air inlet 22 and first encounters the curved plate segment 242. The curved inner wall surface of the curved plate segment 242 can effectively guide the horizontal or inclined airflow downward. This design ensures that the airflow can quickly adjust its direction after entering the first air guide cavity 21 and flow downward along the inner wall surface of the curved plate segment 242. Subsequently, the airflow will pass through the area between the flat plate segment 241 and the leeward plate 25, where it will be further organized and evenly distributed before being smoothly blown downward.

[0082] In this embodiment, the design of the arc-shaped plate segment 242 not only helps guide the airflow direction but also allows for more uniform dispersion of the airflow during its flow through its arc-shaped surface. After passing through the arc-shaped plate segment 242, the airflow is more evenly distributed in the area between the flat plate segment 241 and the leeward plate 25, thereby improving the uniformity of the hot air blown from the first air outlet 23 and preventing airflow velocity loss, ensuring sufficient airflow speed. Furthermore, the arc-shaped plate segment 242 design helps reduce noise and vibration caused by collisions or friction during airflow, which contributes to improving the quietness and stability of the clothes dryer during use.

[0083] In one embodiment, the side of the arc-shaped plate segment 242 facing the first air guide cavity 21 is a perfect circular arc surface.

[0084] The design of the circular arc surface makes the arc plate segment 242 guide the airflow more smoothly and reduces the airflow disturbance caused by the abrupt change in shape. This helps to ensure that the airflow can flow smoothly downward along the inner wall of the arc plate segment 242 after entering the first air guide cavity 21, thereby improving the stability and uniformity of the airflow.

[0085] In one embodiment, the top side of the leeward plate 25 is located at the center of the circular arc surface of the arc-shaped plate segment 242.

[0086] Specifically, refer to Figure 7 The top edge of the leeward plate 25 is located at the center of the circular arc surface of the arc-shaped plate segment 242, meaning that all points on the inner arc surface of the arc-shaped plate segment 242 are equidistant from the top edge of the leeward plate 25. Figure 7 In this structure, L1 = L2. After the drying hot air enters through the first air inlet 22, it will pass through a first air guide cavity 21 with a constant width. This ensures that the flow rate of the drying hot air after entering the first air guide cavity 21 is uniform.

[0087] In one embodiment, the distance between the top side of the leeward plate 25 and the arc-shaped plate segment 242 is not less than 5 mm.

[0088] Right now, Figure 7 In the formula, L1 = L2 ≥ 5mm, providing sufficient width ensures adequate airflow, thereby guaranteeing that the delivered heat is sufficient to dry clothes in a short time.

[0089] In one embodiment, the planar plate segment 241 is inclined relative to the leeward plate 25, such that the first air guide cavity 21 extends from the top of the planar plate segment 241 toward the first air outlet 23 in a flared state.

[0090] When airflow flows from the curved plate segment 242 into the flat plate segment 241, due to the flared design of the first air guide cavity 21, the airflow gradually diffuses through the area between the back wind panels 25 of the flat plate segment 241, thereby guiding the drying hot air downwards and inwards. This guides the airflow to avoid the drying rod, allowing the airflow to blow more directly onto the clothes below. See [reference needed] for details. Figure 15 The effect achieved.

[0091] In one embodiment, the included angle between the planar plate segment 241 and the leeward plate 25 is 5 to 15°.

[0092] Right now, Figure 7 Within this range, 5° < ∠α < 15°. Through numerous experiments, the inventors have verified that controlling the angle within this range achieves diffused airflow while avoiding excessive heat waste caused by an excessively large diffusion angle.

[0093] In one embodiment, the distance by which the windward plate 24 extends in the width direction above the first air outlet 23 is L3, and the width of the first air inlet 22 in the horizontal direction is L4, wherein L3:L4≥1:1.

[0094] Right now, Figure 7 The ratio of L3 to L4 is ≥ 1:1. This setting can reduce the influence of the first air inlet 22 on the airflow when it passes over the top of the windward plate 24, and at the same time reduce the influence of the inertial flow direction caused by the airflow flowing in from one side.

[0095] In one embodiment, reference is made to Figure 6 The wind distribution component 2 includes support ribs 26, which are spaced apart along the length of the wind distribution component 2 and connect the windward plate 24 and the leeward plate 25. The first air guide cavity 21 is formed between each of the support ribs 26.

[0096] The support rib 26 significantly enhances the overall structural stability of the air distribution component 2, making the entire air distribution component 2 more robust and durable when subjected to the pressure and vibration generated by airflow.

[0097] In one embodiment, the supporting rib 26 includes a rib block 261 and a rib plate 262. The air distribution member 2 is provided with a second air guide cavity 2611 corresponding to the rib block 261. The second air guide cavity 2611 has a second air inlet and a second air outlet. The second air inlet is located on the windward side of the air distribution member 2, and the second air outlet is located downward.

[0098] Based on the structure of the rib 261, a second air guide cavity 2611 is provided therein, and a second air outlet is provided on the windward side of the air distribution component 2. The second air guide cavity 2611 can be used to guide a small portion of the airflow outward. Combined with the structure of the first air guide cavity 21 that guides the airflow inward, the airflow can be guided to both the inner and outer sides of the clothes drying rod at the same time, realizing the function of drying the inner and outer areas of the clothes simultaneously.

[0099] In one embodiment, the area of ​​the first air inlet 22 is more than three times the area of ​​the second air inlet.

[0100] Specifically, in a clothes drying rack, two clotheslines are typically arranged side by side, allowing two rows of clothes to be hung simultaneously. It can be understood that the airflow on the facing sides (inner sides) of the two rows of clothes is slower, resulting in a slower drying speed; while the airflow on the opposite sides (outer sides) of the two rows of clothes is faster, resulting in a faster drying speed. In this design, the first air guide cavity 21 primarily guides the airflow inward to dry the inner side of the clothes, while the second air guide cavity 2611 primarily guides the airflow outward to dry the outer side of the clothes. Because the inner side of the clothes dries slower, the area of ​​the first air inlet 22 is larger, allowing for a larger flow of hot air to accelerate the drying speed of the inner side of the clothes, ultimately achieving the goal of drying the entire garment.

[0101] On the other hand, an air supply system is provided, including the above-mentioned duct structure and a fan 3, wherein the air outlet of the fan 3 is connected to the air inlet 11 of the ventilation duct 1.

[0102] During the operation of the air supply system described in this embodiment, the airflow is delivered to the ventilation duct 1 under the drive of the fan 3. After being diffused by the air distribution component 2, the airflow is evenly blown downward from the first air outlet 23, achieving the purpose of large-area air outlet drying. It can ensure a sufficiently large air outlet area and a sufficiently uniform air outlet effect with the use of a relatively small number of fans 3. It achieves the effect of expanding the drying area with a low cost, while ensuring a high heat utilization rate, improving the drying speed and drying uniformity.

[0103] Specifically, a heater is installed at the air inlet 11, which can be used to heat the air blown out by the fan 3.

[0104] Preferably, the heating device described in this embodiment is a PTC heater. A PTC (Positive Temperature Coefficient) heater is a novel heating element. The working principle of a PTC heater is based on the positive temperature coefficient characteristic of PTC ceramic material. When current flows through the PTC ceramic, its resistance increases with increasing temperature. When the temperature reaches a certain value (Curie temperature), the resistance increases sharply, and the current decreases, thereby automatically adjusting the power of the PTC element to maintain a constant temperature. The PTC heater has an overheat protection function; when the temperature is too high, the resistance automatically increases, limiting the current and preventing overheating.

[0105] Furthermore, the air supply system described in this embodiment also includes a plasma generator, which is disposed in the ventilation duct 1. A plasma generator is a device capable of generating plasma. Plasma, known as the "fourth state of matter," is a highly ionized gas containing a large number of free electrons, ions, and other charged particles. Plasma has strong chemical reactivity and can react with various substances, producing oxidation, reduction, decomposition, and other effects. The high-energy electrons and reactive oxygen ions in plasma can effectively kill harmful microorganisms such as bacteria, viruses, and mites on clothing.

[0106] On the other hand, a clothes drying rack is provided, including the aforementioned air duct structure.

[0107] By setting two of the above-mentioned air duct structures in the clothes drying rack, drying air can be output from all four sides of the clothes drying rack, achieving the full-area drying function of the clothes drying rack while using only two fans. The reduction in the number of fans can reduce the overall weight of the clothes drying rack and the cost of components. By setting the two air duct structures symmetrically at the center, two air duct structures with identical structures can be used, thereby reducing the types of components and reducing the difficulty of installation, and improving the versatility of the air duct structure.

[0108] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A duct structure, characterized in that, include: The ventilation duct has an air inlet on one side. An air distribution component is disposed within the ventilation duct; the air distribution component is provided with a first air guide cavity, the first air guide cavity having a first air inlet and a first air outlet, the first air inlet being disposed on the leeward side of the air distribution component, and the first air outlet being disposed downward.

2. The air duct structure according to claim 1, characterized in that, The air distribution component extends along the length of the ventilation duct, and the first air guide cavity extends along the length of the air distribution component.

3. The air duct structure according to claim 2, characterized in that, The wind distribution component includes a windward plate and a leeward plate arranged opposite to each other, and the first air guide cavity is formed between the windward plate and the leeward plate.

4. The air duct structure according to claim 3, characterized in that, The windward side of the wind-facing plate is an arc-shaped surface.

5. The air duct structure according to claim 4, characterized in that, The windward plate includes a flat plate segment and an arc-shaped plate segment. The bottom side of the flat plate segment is connected to the ventilation duct, and the top side is connected to the arc-shaped plate segment.

6. The air duct structure according to claim 5, characterized in that, The side of the arc-shaped plate segment facing the first air guide cavity is a perfect circular arc surface.

7. The air duct structure according to claim 6, characterized in that, The distance between the top side of the leeward plate and the arc-shaped plate segment is not less than 5mm.

8. The air duct structure according to claim 5, characterized in that, The planar plate segment is inclined relative to the leeward plate, so that the first air guide cavity extends from the top of the planar plate segment to the first air outlet in a flared state.

9. The air duct structure according to claim 8, characterized in that, The angle between the planar plate segment and the leeward plate is 5 to 15°.

10. The air duct structure according to claim 3, characterized in that, The distance L3 is the distance the wind-facing plate extends along the width direction above the first air outlet, and the width L4 is the width of the first air inlet in the horizontal direction, wherein L3:L4≥1:

1.

11. The air duct structure according to claim 3, characterized in that, The wind distribution component includes support ribs, which are spaced apart along the length of the wind distribution component and connect the windward plate and the leeward plate. The first air guide cavity is formed between each of the support ribs.

12. The air duct structure according to claim 11, characterized in that, The supporting ribs include rib blocks and rib plates. A second air guide cavity is provided on the air distribution component corresponding to the position of the rib blocks. The second air guide cavity has a second air inlet and a second air outlet. The second air inlet is located on the windward side of the air distribution component, and the second air outlet is located downward.

13. The air duct structure according to claim 12, characterized in that, The area of ​​the first air inlet is more than three times the area of ​​the second air inlet.

14. An air supply system, characterized in that, The ventilation duct structure and fan included in any one of claims 1-13, wherein the air outlet of the fan is connected to the air inlet of the ventilation duct.

15. A clothes drying rack, characterized in that, The air duct structure includes any one of claims 1-13.

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