Air supply device and dryer

Abstract

This application relates to an air supply device and a clothes dryer. The air supply device includes a housing and an air supply assembly. The housing has at least two air outlets, which are spaced apart from each other. The air supply assembly is disposed inside the housing and includes an axial flow fan configured to supply air outward through the air outlets. The aforementioned air supply device, by forming at least two spaced-apart air outlets, expands the coverage area of ​​the air outlets, reduces the concentration of the airflow, and achieves more uniform air supply and drying. Simultaneously, the axial flow fan can generate a large volume of air with a strong airflow, delivering a large volume of air through the air outlets. Thus, the air supply device can achieve uniform airflow with a large volume, improving the drying effect and efficiency.

Description

Technical Field

[0001] This application relates to the field of clothes drying equipment technology, and in particular to an air supply device and a clothes dryer. Background Technology

[0002] As existing economic levels continue to rise, users are demanding more and more efficient and high-quality healthy living. Clothes drying equipment is receiving increasing attention because it can shorten drying time and reduce the impact of weather, especially humid weather, on drying.

[0003] In related technologies, folding dryers deliver hot air through an air outlet, which blows directly onto the surface of the clothes to dry them. However, folding dryers can result in concentrated airflow, leading to a fixed drying area and a small radiating area, resulting in uneven drying and affecting drying efficiency and effectiveness. Summary of the Invention

[0004] Therefore, it is necessary to provide an air supply device and dryer that can provide more even airflow and drying to address the above problems.

[0005] An air supply device for a clothes dryer, the air supply device comprising:

[0006] The housing has at least two air outlets, and the at least two air outlets are spaced apart from each other; and

[0007] An air supply assembly is disposed within the housing, the air supply assembly including an axial flow fan configured to supply air outward through the air outlet.

[0008] In one embodiment, the air supply assembly further includes a guide duct that connects the air outlet of the axial fan to the air outlet.

[0009] In one embodiment, the airflow duct includes a shaping duct section connected to the air outlet and forming a top guide surface and a bottom guide surface therein, the top guide surface and the bottom guide surface being close to each other in a direction away from the axial flow fan.

[0010] In one embodiment, the angle between the top guide surface and the axis of the axial flow fan is θ1, then 0°≤θ1≤30°, and the angle between the bottom guide surface and the axis of the axial flow fan is θ2, then 0°≤θ2≤30°.

[0011] In one embodiment, the length of the shaping duct section is L, and the diameter of the axial flow fan impeller is D, then D / 2≤L≤D.

[0012] In one embodiment, the airflow guiding duct further includes an air outlet section and a straight duct section. The air outlet section is connected to the air outlet, and the straight duct section is connected to the shaping duct section and the air outlet section. The length of the straight duct section is N, and the impeller diameter of the axial flow fan is D. Then, D / 2≤N≤3D / 2.

[0013] In one embodiment, the air supply assembly further includes a heating device disposed within the airflow duct.

[0014] In one embodiment, the distance between the heating device and the axial flow fan is C, and the diameter of the impeller of the axial flow fan is D, then 2D / 3≤C≤2D.

[0015] In one embodiment, the air outlet has a dimension b along the axial direction of the axial flow fan, and the impeller diameter of the axial flow fan is D, then D / 2≤b≤D.

[0016] In one embodiment, the housing includes a first part and a second part, which are rotatably connected to each other and configured to have an unfolded state and a folded state.

[0017] In one embodiment, the at least two air outlets include a first air outlet and a second air outlet, wherein the first air outlet is formed in the first part and the second air outlet is formed in the second part;

[0018] The at least two sets of air supply components include a first air supply component and a second air supply component. The first air supply component is disposed in the first part and configured to supply air to the outside through the first air outlet; the second air supply component is disposed in the second part and configured to supply air to the outside through the second air outlet.

[0019] In one embodiment, the first part is configured with a first half-shaft, and the second part is configured with a second half-shaft, wherein the first half-shaft and the second half-shaft are coaxially arranged and rotatably connected about a common axis.

[0020] The axial flow fan of the first air supply assembly is disposed inside the first half-shaft, and the axial flow fan of the second air supply assembly is disposed inside the second half-shaft.

[0021] In one embodiment, the first part is formed with a second air inlet communicating therein, and the second part is formed with a first air inlet communicating therein;

[0022] Both the first half-shaft and the second half-shaft are provided with a first vent. At least in the unfolded state, the first half-shaft is connected to the second part through its first vent, and then to the first air inlet. At least in the unfolded state, the second half-shaft is connected to the first part through its first vent, and then to the second air inlet.

[0023] In one embodiment, the first part is constructed with a first arc structure that fits into the second half-shaft, and the second part is constructed with a second arc structure that fits into the first half-shaft. Both the first arc structure and the second arc structure are constructed with a second vent.

[0024] The second vent of the first arc structure is configured such that, in the unfolded state, it at least partially overlaps with the first vent of the second half-shaft; the second vent of the second arc structure is configured such that, in the unfolded state, it at least partially overlaps with the first vent of the first half-shaft.

[0025] In one embodiment, the first half-shaft is provided with a rotating groove, and the second half-shaft is provided with a rotating fit structure that slides into the rotating groove.

[0026] A clothes dryer includes the aforementioned air supply device.

[0027] The aforementioned air supply device forms at least two air outlets spaced apart from each other, expanding the coverage area of ​​the air outlets, reducing the concentration of the airflow, and achieving more uniform airflow for even drying. Simultaneously, the axial flow fan can generate a large volume of airflow with a strong feel, delivering a large volume of air through the air outlets. Thus, the air supply device can achieve uniform airflow with a large volume, improving drying effect and efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the air supply device in one embodiment of this application.

[0030] Figure 2 for Figure 1 The diagram shows the exploded structure of the air supply device.

[0031] Figure 3 for Figure 1 The diagram shows the structure of the air supply device in the folded state.

[0032] Figure 4 for Figure 1 The diagram shows a partial structural diagram of the air supply device after the first and second parts of the casing have been separated.

[0033] Figure 5 for Figure 1 The diagram shows another angle of the air supply device after the first and second parts of the casing have been separated.

[0034] Figure 6 for Figure 1 A partial structural diagram of the air supply device is shown.

[0035] Figure 7 for Figure 6 The diagram shows an enlarged view of the air supply device at point A.

[0036] Figure 8 for Figure 1 The diagram shows a partial cross-sectional structure of the air supply device.

[0037] Figure 9 for Figure 1 The diagram shows a partial cross-sectional structure of the air supply device.

[0038] Explanation of reference numerals in the attached drawings: 100, air supply device; 10, casing; 11, air outlet; 111, first air outlet; 113, second air outlet; 12, first part; 121, first half-shaft; 1211, rotating groove; 123, first arc structure; 13, second part; 131, second half-shaft; 1311, rotating mating structure; 133, second arc structure; 141, first air inlet; 143, second air inlet; 15, first vent; 30, air supply assembly; 31, first air supply assembly; 33, second air supply assembly; 35, axial flow fan; 37, air guide duct; 371, shaping duct section; 3711, top guide surface; 3713, bottom guide surface; 373, air outlet section; 375, straight duct section; 39, heating device. Detailed Implementation

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0041] Furthermore, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0045] As described in the background section, in related technologies, the air vents of drying equipment are mostly centrally located or single-sided, and during operation, hot air is delivered through a single vent. Furthermore, the air vents of drying equipment are mainly divided into uncovered vents and covered vents, which are respectively direct-blowing and four-sided-blowing types. Both of these result in concentrated airflow and uneven drying, thus affecting the drying effect and efficiency.

[0046] Please see Figure 1 and Figure 2 This application provides an air supply device 100 for a clothes dryer. The air supply device 100 includes a housing 10 and an air supply assembly 30. The housing 10 has at least two air outlets 11, which are spaced apart from each other. The air supply assembly 30 is disposed inside the housing 10 and includes an axial flow fan 35, which is configured to supply air outward through the air outlets 11.

[0047] To function properly, the dryer creates a drying space during use, with the air outlet 11 facing this space. Taking the drying space as an example where it is located above the air supply device 100, the air outlet 11 can be formed on the upper surface of the casing 10 and face upwards during use. Furthermore, the casing 10 also has an air inlet, which can be, but is not limited to, an air inlet grille. External airflow flows into the casing 10 through the air inlet, is drawn in by the suction end of the axial flow fan 35, and then blown out by the outlet end of the axial flow fan 35, ultimately being delivered outwards from the air outlet 11.

[0048] Understandably, the axial flow fan 35 may include a rotor and a motor, and the motor drives the rotor to drive the airflow. The number of axial flow fans 35 can be one, and they can simultaneously deliver air to the outside through all the air outlets 11. The number of axial flow fans 35 can also be multiple, and they can be set one-to-one with the air outlets 11, with each axial flow fan 35 delivering air to the outside through one air outlet 11.

[0049] The aforementioned air supply device 100 forms at least two air outlets 11 spaced apart from each other, expanding the coverage area of ​​the air outlets 11, reducing the concentration of the airflow, and achieving more uniform air supply for even drying. Simultaneously, the axial flow fan 35 can generate a large volume of airflow with a strong wind, delivering a large volume of air through the air outlets. Thus, the air supply device 100 can achieve uniform airflow with a large volume, improving the drying effect. The air supply device 100 is suitable for dryers requiring high airflow and short drying times, effectively increasing the number of clothes dried and shortening the drying time, thereby improving drying efficiency.

[0050] Please refer to the following: Figures 3 to 5 To address the aforementioned issues, in some embodiments, the housing 10 includes a first part 12 and a second part 13, which are rotatably connected to each other and configured to have an unfolded state and a folded state.

[0051] The structures of the first part 12 and the second part 13 are largely the same. The casing 10 folds the first part 12 and the second part 13 by a centrally rotating fold. The casing 10 switches between an unfolded state and a folded state by rotating the first part 12 and the second part 13 relative to each other. The process of switching to the unfolded state is called unfolding, and the process of switching to the folded state is called folding. When folding, the rotation directions of the first part 12 and the second part 13 are as follows: Figure 4 As shown by the middle arrow, the first part 12 and the second part 13 can rotate in opposite directions when unfolding and folding.

[0052] In the folded state, the first part 12 and the second part 13 are close together, with an angle of 0° between them, corresponding to the dryer's folded state. In the unfolded state, the ends of the first part 12 and the second part 13 furthest from the rotating connection are far apart, with an angle of 180° between them, corresponding to the dryer's operating state. The drying space is formed above the unfolded first part 12 and the second part 13, and the air outlet 11 of the casing 10 faces upwards when unfolded.

[0053] In this way, the effective floor space of the folded air supply device 100 is significantly reduced, which helps with storage. Moreover, compared with pull-out folding, the rotating folding structure has fewer structural limitations, which makes it easier to improve the compactness of the air supply device 100.

[0054] In some embodiments, at least two air outlets 11 include a first air outlet 111 and a second air outlet 113, the first air outlet 111 being formed in the first part 12 and the second air outlet 113 being formed in the second part 13. At least two sets of air supply assemblies 30 include a first air supply assembly 31 and a second air supply assembly 33, the first air supply assembly 31 being disposed within the first part 12 and configured to supply air outward through the first air outlet 111. The second air supply assembly 33 being disposed within the second part 13 and configured to supply air outward through the second air outlet 113.

[0055] Thus, the air supply device 100 forms a double-sided air outlet layout. The first air outlet 111 and the second air outlet 113 located on the first part 12 and the second part 13 on both sides respectively achieve synchronous and uniform upward air supply on both sides. This can improve the problems of concentrated air supply and uneven drying distribution in the single-sided air duct arrangement of folding clothes drying equipment in related technologies.

[0056] In some embodiments, the first part 12 is configured with a first half-shaft 121, and the second part 13 is configured with a second half-shaft 131. The first half-shaft 121 and the second half-shaft 131 are coaxially arranged and rotatably connected about a common axis. The axial flow fan 35 of the first air supply assembly 31 is disposed in the first half-shaft 121, and the axial flow fan 35 of the second air supply assembly 33 is disposed in the second half-shaft 131.

[0057] In other words, the first part 12 and the second part 13 are rotatably connected by the first half-shaft 121 and the second half-shaft 131, and the interior of the two parts forms a space that can accommodate the axial flow fan 35, respectively accommodating their respective axial flow fans 35.

[0058] By placing the axial fan 35 in the first half-shaft 121 and the second half-shaft 131, the air supply device 100 can be more integrated, making full use of the space in the first half-shaft 121 and the second half-shaft 131.

[0059] In some embodiments, the first part 12 has a second air inlet 143 communicating therewith, and the second part 13 has a first air inlet 141 communicating therewith. The first air inlet 141 and the second air inlet 143 are respectively formed at the bottom of the first part 12 and the second part 13 after they are unfolded.

[0060] Both the first half-shaft 121 and the second half-shaft 131 are provided with a first vent 15. The first half-shaft 121, at least in the deployed state, is connected to the second part 13 through its first vent 15, and then to the first air inlet 141. The second half-shaft 131, at least in the deployed state, is connected to the first part 12 through its first vent 15, and then to the second air inlet 143.

[0061] Understandably, the vent is constructed on the side facing the air intake end of the axial flow fan 35, through which the axial flow fan 35 can draw in air. The first vent 15 can be, but is not limited to, a vent grille.

[0062] Thus, the axial flow fan 35 located in the first half-shaft 121 can draw air from the first air inlet 141 formed on the second part 13 through the first vent 15, and the axial flow fan 35 located in the second half-shaft 131 can draw air from the second air inlet 143 formed on the first part 12 through the first vent 15, thereby creating sufficient space between the air intake end of the axial flow fan 35 and the air inlet, so as to facilitate the smooth air intake of the axial flow fan 35.

[0063] In some embodiments, the first part 12 is configured with a first arcuate structure 123 that fits against the second half-shaft 131, and the second part 13 is configured with a second arcuate structure 133 that fits against the first half-shaft 121. Both the first arcuate structure 123 and the second arcuate structure 133 are configured with second vents. The second vent of the first arcuate structure 123 is configured to at least partially overlap with the first vent 15 of the second half-shaft 131 in the unfolded state. The second vent of the second arcuate structure 133 is configured to at least partially overlap with the first vent 15 of the first half-shaft 121 in the unfolded state.

[0064] The first arc structure 123 matches the shape of the second half-shaft 131 and can slide against its surface. The second arc structure 133 matches the shape of the first half-shaft 121 and can slide against its surface. When the first part 12 and the second part 13 rotate relative to each other, the first arc structure 123 can provide support for the second half-shaft 131 while allowing it to rotate, and the second arc structure 133 can provide support for the first half-shaft 121 while allowing it to rotate. After the first part 12 and the second part 13 are unfolded, the first vent 15 of the first half-shaft 121 can coincide with and connect to the second vent of the second arc structure 133, thereby connecting to the second part 13 and the first air inlet 141 on the second part 13. Similarly, after the first part 12 and the second part 13 are unfolded, the first vent 15 of the second half-shaft 131 can coincide with and connect to the second vent of the first arc structure 123, thereby connecting to the first part 12 and the second air inlet 143 on the first part 12.

[0065] In this way, the first arc structure 123 and the second arc structure 133 can support the second half shaft 131 and the first half shaft 121 respectively, while ensuring that the first vents 15 of the two can be smoothly connected, so that the axial flow fan 35 can work normally to draw air in the unfolded state.

[0066] For the first air supply assembly 31, air enters from the first air inlet 141 at the bottom of the second part 13, passes sequentially through the second ventilation opening of the second arc structure 133 and the first ventilation opening of the first half-shaft 121, and is drawn in by the suction end of the axial flow fan 35 of the first air supply assembly 31 (the airflow direction is as follows). Figure 8(As indicated by the middle arrow). Then, air is blown from the outlet of the axial flow fan 35 towards the first outlet 111 on the first part 12. Similarly, for the second air supply assembly 33, air enters from the second inlet 143 at the bottom of the first part 12, passes sequentially through the second ventilation opening of the first arc structure 123 and the first ventilation opening of the second half-shaft 131, and is drawn in by the intake end of the axial flow fan 35 of the second air supply assembly 33. Then, air is blown from the outlet of the axial flow fan 35 towards the second outlet 113 on the second part 13 (airflow direction as shown). Figure 9 (As indicated by the middle arrow).

[0067] Please refer to the following: Figure 6 and Figure 7 In some embodiments, the first half-shaft 121 is provided with a rotating groove 1211, and the second half-shaft 131 is provided with a rotating engagement structure 1311 that slides with the rotating groove 1211.

[0068] Thus, the second half-shaft 131 is engaged in the rotating groove 1211 through the rotating fit structure 1311, forming a rotating fit with the first half-shaft 121, so that the rotating fit structure 1311 can rotate along the rotating groove 1211 to form a rotating pair, and the first half-shaft 121 and the second half-shaft 131 can be rotatably connected through the rotating groove 1211 and the rotating fit structure 1311.

[0069] Please refer to the following: Figure 8 and Figure 9 In some embodiments, the air supply assembly 30 further includes a guide air duct 37, which connects the air outlet of the axial flow fan 35 and the air outlet 11 of the housing 10.

[0070] The air duct 37 has an airflow channel that allows airflow to flow from the outlet end of the axial fan 35 to the outlet 11, so that the airflow generated by the axial fan 35 passes through the air duct 37 and the outlet 11 in sequence and is then sent outward.

[0071] Thus, guided by the airflow duct 37, the airflow generated by the axial flow fan 35 can smoothly reach the air outlet 11. The axial flow fan 35 can be installed at intervals from the air outlet 11, and their orientations can also be different.

[0072] In some embodiments, the airflow duct 37 includes a shaping duct section 371, which is connected to the air outlet and forms a top guide surface 3711 and a bottom guide surface 3713 therein, the top guide surface 3711 and the bottom guide surface 3713 being close to each other in a direction away from the axial flow fan 35.

[0073] When the air supply device 100 is in use, the top guide surface 3711 and the bottom guide surface 3713 are the top and bottom surfaces of the airflow channel in the shaping air duct section 371, respectively.

[0074] In addition, two side guide surfaces are formed within the shaping duct section 371. These two side guide surfaces connect the top guide surface 3711 and the bottom guide surface 3713 and are arranged opposite to each other. The top guide surface 3711, the bottom guide surface 3713, and the two side guide surfaces together define the airflow channel within the shaping duct section 371. The two side guide surfaces can be inclined away from each other in a direction away from the axial flow fan 35.

[0075] Due to size limitations of the air supply device 100, its thickness in the height direction should not be too large. The shaping air duct section 371 is used to shape the airflow blown from the outlet end of the axial flow fan 35 and can reduce its height perpendicular to the airflow direction, so that the guide air duct 37 can be smoothly arranged inside the housing 10 and guide the airflow to the outlet 11.

[0076] Furthermore, the top guide surface 3711 and the axis of the axial flow fan 35 (e.g.) Figure 8 and Figure 9 The angle between the dashed line Z and the axis of the axial flow fan 35 is θ1, then 0°≤θ1≤30°. The angle between the bottom guide surface 3713 and the axis of the axial flow fan 35 is θ2, then 0°≤θ2≤30°. Specifically, the top guide surface 3711 and the bottom guide surface 3713 are inclined in opposite directions relative to the axial direction. The top guide surface 3711 can be inclined at an upward slope in the direction away from the axial flow fan 35, and the bottom guide surface 3713 can be inclined at a downward slope in the direction away from the axial flow fan 35.

[0077] The guide angle at the air-shaping duct at the outlet of the axial flow fan 35 significantly affects the air resistance of the guide duct 37. If the inclination angles of the top guide surface 3711 and the bottom guide surface 3713 are too large, the blockage rate of the axial flow fan 35 at the outlet will increase, resulting in backflow due to excessive air resistance and affecting the air delivery capacity. Limiting the angles between the top guide surface 3711 and the bottom guide surface 3713 and the axis of the axial flow fan 35 to no more than 30° helps ensure smooth air delivery and air volume performance of the guide duct 37.

[0078] Furthermore, if the length of the shaping duct section 371 is L and the diameter of the impeller of the axial fan 35 is D, then D / 2≤L≤D.

[0079] In this way, the rectifier duct section can obtain sufficient distance to allow its top guide surface 3711 and bottom guide surface 3713 to be appropriately tilted, ensuring that the airflow blown out from the outlet of the axial flow fan 35 is fully shaped.

[0080] In some embodiments, the air duct 37 further includes an air outlet section 373 and a straight air duct section 375. The air outlet section 373 is connected to the air outlet 11, and the straight air duct section 375 is connected to the shaping air duct section 371 and the air outlet section 373. The length of the straight air duct section 375 is N, then D / 2≤N≤3D / 2.

[0081] Among them, the air outlet section 373 is connected between the straight air duct section 375 and the air outlet 11. It is necessary to change the direction of the airflow flowing in the straight air duct section 375 along the extension direction of the straight air duct section 375 to the air outlet 11 and blow it out along the direction of the air outlet 11.

[0082] The straight duct section 375 can rectify the airflow, improving its flow pattern. Because the air pressure at the outlet 11 is relatively high, without rectification, the airflow would deflect to both sides along the air delivery direction. The straight duct section 375 rectifies the airflow, effectively improving the airflow deflection phenomenon and helping to ensure that the main airflow at the outlet 11 is perpendicular to the ground and evenly delivered upwards, thus enhancing the uniformity of clothes drying within the duct. However, if the straight duct section 375 is too short, it will not achieve the above effect; if it is too long, it will increase frictional losses along the duct, reducing the outlet airflow velocity and volume.

[0083] In some embodiments, the air supply assembly 30 further includes a heating device 39 disposed within the airflow duct 37. Preferably, the heating device 39 is disposed within the straight airflow duct section 375 and is arranged parallel to the axial flow fan 35.

[0084] Understandably, the heating device 39 is located inside the air duct 37 and can heat the airflow flowing inside to produce a higher temperature and drier airflow, thereby improving the drying effect and efficiency.

[0085] Furthermore, if the distance between the heating device 39 and the axial flow fan 35 is C, then 2D / 3≤C≤2D.

[0086] If the distance between the heating element 39 and the axial fan 35 is too small, the high temperature of the heating element in the heating element 39 will cause deformation of the internal structure of the axial fan 35 due to the high temperature, affecting its air delivery performance. If the distance between the heating element and the axial fan 35 is too far, the surface of the heating element in the heating element 39 will be unevenly exposed to airflow, affecting the heating effect of the dryer. The distance between the heating element 39 and the axial fan 35 should be no less than 2D / 3 and no more than 2D. This can prevent the axial fan 35 from overheating when the heating element in the heating element 39 is working, while ensuring that the surface of the heating element is evenly exposed to airflow.

[0087] In some embodiments, the dimension of the air outlet 11 in the axial direction of the axial flow fan 35 is b, then D / 2≤b≤D.

[0088] If the dimension of the air outlet 11 in the axial direction of the axial fan 35 is too small, it will reduce the width of the air jet at the air outlet 11, affecting the uniformity of airflow to the clothes. If the dimension is too large, it will cause uneven airflow velocity on the left and right sides of the outlet, reducing the outlet airflow velocity and thus affecting the performance of the dryer. The dimension of the air outlet 11 in the axial direction of the axial fan 35 should be no less than D / 2 and no greater than D, which can ensure the width of the air jet at the air outlet 11 while ensuring the uniformity of airflow velocity on the left and right sides as much as possible.

[0089] In the aforementioned air supply device 100, for the first air supply assembly 31, air enters from the first air inlet 141 at the bottom of the second part 13, passes sequentially through the second ventilation opening of the second arc structure 133 and the first ventilation opening of the first half-shaft 121, and is drawn in by the suction end of the axial flow fan 35 of the first air supply assembly 31. Then, the air is blown from the outlet end of the axial flow fan 35 to the first air outlet 111 on the first part 12. Similarly, for the second air supply assembly 33, air enters from the second air inlet 143 at the bottom of the first part 12, passes sequentially through the second ventilation opening of the first arc structure 123 and the first ventilation opening of the second half-shaft 131, and is drawn in by the suction end of the axial flow fan 35 of the second air supply assembly 33. Then, the air is blown from the outlet end of the axial flow fan 35 to the second air outlet 113 on the second part 13. During the air supply process, the airflow passes through the heating device 39, where cold and hot air are converted, thereby achieving the function of accelerating the evaporation and drying of wet clothes. The dual-sided air outlet design allows hot air to be delivered from both sides to the middle, resulting in more even coverage of clothes. This effectively improves the problems of concentrated air delivery and uneven drying caused by the single air duct arrangement in existing folding dryers, which leads to low drying efficiency.

[0090] This application also provides a clothes dryer, including the aforementioned air supply device 100.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An air supply device for a clothes dryer, characterized in that, The air supply device includes: The housing (10) has at least two air outlets (11), and the at least two air outlets (11) are spaced apart from each other; and An air supply assembly (30) is disposed inside the housing (10), the air supply assembly (30) includes an axial flow fan (35), the axial flow fan (35) is configured to supply air to the outside through the air outlet (11); The air supply assembly (30) also includes a guide air duct (37), which connects the air outlet of the axial flow fan (35) and the air outlet (11). The air duct (37) includes a shaping section (371), which is connected to the air outlet and forms a top guide surface (3711) and a bottom guide surface (3713) therein. The top guide surface (3711) and the bottom guide surface (3713) are close to each other in a direction away from the axial flow fan (35). The housing (10) includes a first part (12) and a second part (13), which are rotatably connected to each other and are configured to have an unfolded state and a folded state; The at least two air outlets (11) include a first air outlet (111) and a second air outlet (113), wherein the first air outlet (111) is formed in the first part (12) and the second air outlet (113) is formed in the second part (13). At least two sets of air supply assemblies (30) include a first air supply assembly (31) and a second air supply assembly (33). The first air supply assembly (31) is disposed in the first part (12) and configured to supply air to the outside through the first air outlet (111). The second air supply assembly (33) is disposed in the second part (13) and configured to supply air to the outside through the second air outlet (113). The first part (12) is constructed with a first half-shaft (121), and the second part (13) is constructed with a second half-shaft (131). The first half-shaft (121) and the second half-shaft (131) are coaxially arranged and rotatably connected about a common axis. The axial flow fan (35) of the first air supply assembly (31) is located inside the first half-shaft (121), and the axial flow fan (35) of the second air supply assembly (33) is located inside the second half-shaft (131).

2. The air supply device according to claim 1, characterized in that, The angle between the top guide surface (3711) and the axis of the axial fan (35) is θ1, then 0° < θ1 ≤ 30°. The angle between the bottom guide surface (3713) and the axis of the axial fan (35) is θ2, then 0° < θ2 ≤ 30°.

3. The air supply device according to claim 1, characterized in that, The length of the shaping duct section (371) is L, and the diameter of the impeller of the axial flow fan (35) is D. Then D / 2≤L≤D.

4. The air supply device according to claim 1, characterized in that, The air duct (37) further includes an air outlet section (373) and a straight air duct section (375). The air outlet section (373) is connected to the air outlet (11). The straight air duct section (375) is connected to the shaping air duct section (371) and the air outlet section (373). The length of the straight air duct section (375) is N. The diameter of the impeller of the axial flow fan (35) is D. Then D / 2≤N≤3D / 2.

5. The air supply device according to claim 1, characterized in that, The air supply assembly (30) also includes a heating device (39), which is located in the air duct (37).

6. The air supply device according to claim 5, characterized in that, The distance between the heating device (39) and the axial flow fan (35) is C, and the diameter of the impeller of the axial flow fan (35) is D. Then 2D / 3≤C≤2D.

7. The air supply device according to claim 1, characterized in that, The dimension of the air outlet (11) in the axial direction of the axial flow fan (35) is b, and the diameter of the impeller of the axial flow fan (35) is D. Then D / 2≤b≤D.

8. The air supply device according to claim 1, characterized in that, The first part (12) has a second air inlet (143) connected thereto, and the second part (13) has a first air inlet (141) connected thereto. Both the first half-shaft (121) and the second half-shaft (131) are provided with a first vent (15). The first half-shaft (121) is connected to the second part (13) through its first vent (15) at least in the unfolded state, and then connected to the first air inlet (141). The second half-shaft (131) is connected to the first part (12) through its first vent (15) at least in the unfolded state, and then connected to the second air inlet (143).

9. The air supply device according to claim 8, characterized in that, The first part (12) is constructed with a first arc structure (123) that fits into the second half-shaft (131), and the second part (13) is constructed with a second arc structure (133) that fits into the first half-shaft (121). Both the first arc structure (123) and the second arc structure (133) are constructed with a second vent. The second vent of the first arc structure (123) is configured to at least partially overlap with the first vent (15) of the second half-shaft (131) in the unfolded state; The second vent of the second arc structure (133) is configured to at least partially overlap with the first vent (15) of the first half-shaft (121) in the unfolded state.

10. The air supply device according to claim 1, characterized in that, The first half-shaft (121) is constructed with a rotating groove (1211), and the second half-shaft (131) is constructed with a rotating fit structure (1311) that slides into the rotating groove (1211).

11. A clothes dryer, characterized in that, Includes the air supply device as described in any one of claims 1-10.

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