Clothes drying machine

Abstract

The application discloses a clothes airing machine, comprising: a clothes airing host; a driving assembly, which is arranged through the clothes airing host along a first center line direction of the clothes airing host; and at least two groups of centrifugal fan modules, wherein the at least two groups of centrifugal fan modules are symmetrically arranged on both sides of the first center line inside the clothes airing host relative to the first center line, and a part of the centrifugal fan modules extends to the other side of the driving assembly through the driving assembly. Through the extension layout of the symmetrically arranged centrifugal fan modules across the driving assembly, combined with the optimization design of the layered volute and the air duct, the problems of low drying efficiency and uneven air outlet caused by the limited internal space of the traditional clothes airing machine are effectively solved, the space utilization rate is effectively improved, the drying effect is enhanced, and the interference with the driving assembly is avoided.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to a clothes drying rack. Background Technology

[0002] Currently, the drying function of electric clothes drying racks on the market mainly relies on two designs: cross-flow fans and centrifugal fans. Cross-flow fans achieve drying through horizontal airflow, but their air volume and air pressure are relatively small, making them suitable for drying needs in small spaces, but they are difficult to meet the requirements of large-area, high-efficiency drying. Centrifugal fans generate high-pressure airflow through centrifugal force, resulting in a larger air volume, suitable for large-area drying, but due to their structural characteristics, they occupy more space, especially posing significant limitations when placed in electric clothes drying racks. In the design of electric clothes drying racks, the placement space of the centrifugal fan is severely constrained by the steel wire rope of the lifting motor. The steel wire rope divides the internal space of the entire machine into two parts, preventing the centrifugal fan from crossing the steel wire rope, forcing an increase in the overall width of the machine to accommodate the fan module. In addition, the steel wire rope requires a certain amount of movement during ascent and descent, further compressing the design dimensions of the volute. Existing technologies suffer from problems such as low space utilization, limited air volume, and poor airflow uniformity. Because of the presence of the wire rope, the centrifugal fan can only be placed in a limited space, and the lateral space of the whole machine cannot be fully utilized, resulting in a large size and low efficiency of the whole machine; the size of the volute is limited by the range of motion of the wire rope and cannot be further increased, thus limiting the increase of air volume and affecting the drying effect. Utility Model Content

[0003] The purpose of this application is to provide a clothes drying rack that effectively improves space utilization, enhances drying effect, and avoids interference with the drive components.

[0004] To achieve the above objectives, this application adopts the following technical solution: On the one hand, a clothes drying rack is provided, comprising: Clothes drying unit; A drive component is disposed through the clothes drying host along the first centerline direction of the clothes drying host; The centrifugal fan module is provided in at least two sets. The centrifugal fan module is centrally symmetrically arranged inside the clothes drying host with respect to the geometric center of the clothes drying host, and a part of the centrifugal fan module extends through the drive assembly to the other side of the drive assembly.

[0005] Optionally, a portion of the centrifugal fan module passes through the drive assembly below and extends to the other side of the drive assembly; or, a portion of the centrifugal fan module passes through the drive assembly above and extends to the other side of the drive assembly.

[0006] Optionally, the centrifugal fan module includes a fan volute, the fan volute having a first volute and a second volute stacked on top of each other, the second volute protruding outward relative to the first volute, the outwardly protruding portion extending through the drive assembly to the other side of the drive assembly.

[0007] Optionally, the centrifugal fan further includes a fan wheel, which includes a first fan blade and a second fan blade along the axial direction. The first fan blade corresponds to the first volute, and the second fan blade corresponds to the second volute.

[0008] Optionally, the first fan blade and the second fan blade are an integral structure, or the first fan blade and the second fan blade are independent fan blade structures arranged coaxially.

[0009] Optionally, the angle θ1 between the initial position of the second volute protruding outward relative to the first volute and the volute tongue of the fan volute is greater than 95°.

[0010] Optionally, the first volute further includes a first air outlet, and the second volute further includes a second air outlet, wherein the air outlet angle θ2 of the first air outlet is smaller than the air outlet angle θ3 of the second air outlet.

[0011] Optionally, the centrifugal fan module includes a first fan module and a second fan module, which are stacked vertically, with a portion of the first fan module extending through the drive assembly to the other side of the drive assembly.

[0012] Optionally, the first fan module includes a first volute and a near-end air duct, and the second fan module includes a second volute and a far-end air duct. The size of the first volute is smaller than the size of the second volute. The first volute is connected to the near-end air duct, and the near-end air duct is connected to a near-end air outlet close to the first volute. The second volute is connected to the far-end air duct, and the far-end air duct is connected to a far-end air outlet away from the first volute.

[0013] Optionally, a first impeller and a second impeller are respectively provided in the first volute and the second volute, the first impeller and the second impeller are coaxially arranged, the size of the first impeller matches the size of the first volute, and the size of the second impeller matches the size of the second volute.

[0014] Optionally, the centrifugal fan module includes a first air inlet and a second air inlet, wherein the first air inlet is located on the side of the first fan module away from the second fan module, and the second air inlet is located on the side of the second fan module away from the first fan module.

[0015] Optionally, the centrifugal fan module includes a fan casing and a main air duct. The fan casing includes a first casing and a second casing arranged in layers. A baffle is provided in the main air duct, which is configured to divide the main air duct into a near-end air duct and a far-end air duct. The first casing is connected to the near-end air duct, and the near-end air duct is connected to a near-end air outlet close to the first casing. The second casing is connected to the far-end air duct, and the far-end air duct is connected to a far-end air outlet away from the first casing.

[0016] Optionally, the driving component includes: The lifting motor is located in the middle of the clothes drying unit; A steel wire rope extends from the middle of the clothes drying host to both ends, connecting the clothes drying rack of the clothes drying machine to the lifting motor; A winding reel is provided on the power output shaft of the lifting motor. The wire rope is wound on the winding reel and has a first working state where it is wound around the first end of the winding reel and a second working state where it is wound around the second end of the winding reel. The centrifugal fan module is configured such that, when the wire rope is in the first working state and the second working state, the portion of the centrifugal fan module extending through the drive assembly to the other side of the drive assembly does not interfere with the wire rope.

[0017] The beneficial effects of this application are as follows: The clothes drying rack provided by this application extends across the drive component through symmetrically arranged centrifugal fan modules. Combined with the layered volute and optimized air duct design, it effectively solves the problems of low drying efficiency and uneven air output caused by limited internal space in traditional clothes drying racks. It has the advantages of effectively improving space utilization, enhancing drying effect, and avoiding interference with the drive component. Attached Figure Description

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the clothes drying host structure described in the embodiments of this application; Figure 2 This is a schematic diagram of the internal structure of the clothes drying rack described in the embodiments of this application; Figure 3 This is a schematic diagram showing the layout of the centrifugal fan module and drive components as described in the embodiments of this application; Figure 4 This is a schematic diagram of the fan casing described in an embodiment of this application; Figure 5 This is a schematic diagram of the three-dimensional structure of the fan casing according to an embodiment of this application; Figure 6 This is a schematic diagram of the three-dimensional structure of the main air duct according to an embodiment of this application; Figure 7This is a three-dimensional structural diagram of the fan casing according to another embodiment of this application; Figure 8 This is a schematic diagram of the three-dimensional structure of the main air duct according to another embodiment of this application.

[0020] In the picture: 100, First centerline; 200, Clothes drying main unit; 300, Drive assembly; 400, Centrifugal fan module; 410, Fan volute; 411, First volute; 412, Second volute; 413, Volute tongue; 420, Impeller; 500, Main air duct; 510, Baffle; 520, Near-end air duct; 530, Far-end air duct. Detailed Implementation

[0021] 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.

[0022] 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 utility model based on the specific circumstances.

[0023] 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.

[0024] In existing technologies, the drying function of electric clothes dryers is limited by the conflict between the space available for the centrifugal fan and the interference of the drive component's steel wire rope. In traditional designs, the steel wire rope runs along the centerline of the main unit, dividing the internal space into left and right sections, preventing the centrifugal fan from crossing this area. This limitation forces the centrifugal fan module to be placed on only one side of the space, resulting in a smaller volute size and difficulty in increasing airflow. If a larger fan is required, the overall width of the clothes dryer needs to be increased to accommodate the fan assembly.

[0025] To address the aforementioned issues, designers observed that the spatial segmentation created by the drive assembly was a key factor restricting the centrifugal fan layout. Since the drive assembly does not completely divide the clothes drying unit along its thickness, gaps exist between the drive assembly and the top and bottom plates of the clothes drying unit. Therefore, this application creatively proposes a layered design for the centrifugal fan module, making some areas thinner to allow passage through the gaps between the drive assembly and the top and bottom plates. This increases the size of the centrifugal fan module in those areas. Compared to a uniformly sized solution without layering, this solution provides a larger airflow for the same clothes drying unit size.

[0026] Specifically, such as Figure 1-8 As shown, this embodiment provides a clothes drying rack, including: Clothes drying unit 200; A drive component 300 is disposed through the clothes drying host 200 along the first center line 100 of the clothes drying host 200. At least two sets of centrifugal fan modules 400 are provided. The at least two sets of centrifugal fan modules 400 are centrally symmetrically arranged inside the clothes drying host 200 with respect to the geometric center of the clothes drying host 200, and a part of the centrifugal fan module 400 extends through the drive assembly 300 to the other side of the drive assembly 300.

[0027] The clothes drying unit 200, serving as the main load-bearing structure, can employ a combination of a metal frame and a shell to integrate various functional modules. The drive assembly 300, comprising a lifting motor and a wire rope transmission system, is arranged longitudinally along the centerline, forming a spatial division boundary. The centrifugal fan module 400 consists of a volute, a fan wheel 420, and an air duct; its extension structure can be a volute protrusion or an independent air duct, avoiding the wire rope's movement path when passing through the drive assembly 300 area. Symmetrical distribution refers to the two groups of modules being symmetrically arranged with the geometric center of the clothes drying unit 200 as the center of symmetry, with approximately the same external dimensions and functional parameters.

[0028] When the two centrifugal fan modules 400 are installed symmetrically at the center, their extensions pass through the spaces on the left and right sides of the drive assembly 300, respectively. This design allows the volute size of a single fan module to break through the original unilateral space limitation; for example, the right volute portion of the left fan can extend into the right space, complementing the left extension portion of the right fan. Through this penetrating layout, the total width of the volutes of the two fan modules can cover the entire internal space of the unit, maximizing the volute size without increasing the overall width of the unit. The symmetrical structure ensures balanced airflow on both sides, resulting in a uniform airflow distribution in the clothes-drying area.

[0029] This application effectively solves the layout challenge of centrifugal fans in limited spaces, significantly improving airflow output while maintaining a compact overall structure. The symmetrical, penetrating layout fully utilizes the space on both sides, avoiding the increased width caused by an excessively large single-sided fan. The two sets of fans work together to create a balanced airflow distribution, improving drying efficiency and uniformity, providing a feasible solution for the miniaturization and high performance of electric clothes drying racks.

[0030] This application further proposes that a portion of the centrifugal fan module 400 extends below the drive assembly 300 through the drive assembly 300 to the other side of the drive assembly 300, or that a portion of the centrifugal fan module 400 extends above the drive assembly 300 through the drive assembly 300 to the other side of the drive assembly 300.

[0031] "Passing through below the drive assembly 300" means that a portion of the centrifugal fan module 400 crosses the central axis in the bottom region of the drive assembly 300. "Passing through above the drive assembly 300" means that a portion of the centrifugal fan module 400 crosses the central axis in the top region of the drive assembly 300. The size of this portion can be adapted to the layout gap between the drive assembly 300 and the wire rope.

[0032] By providing the two layering methods mentioned above, this solution makes the layout of the drive component 300 and the centrifugal fan module 400 in the clothes drying rack more flexible and adaptable.

[0033] As a specific embodiment of this application, see reference. Figure 5 , 6 As shown, the centrifugal fan module 400 includes a fan volute 410, which has a first volute 411 and a second volute 412 stacked on top of each other. The second volute 412 protrudes outward relative to the first volute 411, and the portion of the second volute 412 protruding outward relative to the first volute 411 extends through the drive assembly 300 to the other side of the drive assembly 300.

[0034] The first volute 411 and the second volute 412, which are stacked vertically, refer to two shells stacked together to form a layered structure. The volute is divided into two parts by the layered design, so that the part of the second volute 412 that protrudes relative to the first volute 411 can cross the drive assembly 300 and occupy the space on the other side.

[0035] The outward protrusion of the second volute 412 means that the radial dimension of the second volute 412 is larger than that of the first volute 411, which can be achieved by locally expanding the cross-sectional shape of the volute. The protruding portion passes through both sides of the drive assembly 300, overcoming the physical limitations of the drive assembly 300 on the lateral space.

[0036] Optionally, the centrifugal fan further includes a fan wheel 420, which includes a first fan blade and a second fan blade along the axial direction. The first fan blade corresponds to the first volute 411, and the second fan blade corresponds to the second volute 412.

[0037] The wind turbine 420 adopts an axially split structure. The first and second blades are distributed along the axial direction, meaning that the blades of the wind turbine 420 are divided into two independent working areas along the axial direction. The first blade corresponds to the airflow channel of the first volute 411, and the second blade corresponds to the expansion channel of the second volute 412. When the wind turbine 420 rotates, the airflow generated by the first blade is output through the first volute 411, and the airflow generated by the second blade is output through the expansion channel formed by the outward protrusion of the second volute 412. The two airflows are superimposed to form a larger air volume.

[0038] The first and second wind turbine blades are either an integral structure or coaxial independent blade structures. An integral structure reduces assembly complexity, while an independent structure allows for differentiated design of blade angles or dimensions between the upper and lower blades to accommodate varying wind pressure requirements.

[0039] Reference Figure 4 As shown, this application further proposes that the angle θ1 > 95° between the initial position of the second volute 412 protruding outward relative to the first volute 411 and the volute tongue 413 of the fan volute 410.

[0040] The outward protrusion of the second volute 412 refers to the starting point where the second volute 412 begins to extend outward from the connection between it and the first volute 411 in the fan volute 410. This can be achieved by adjusting the radius of curvature or bending angle at the connection point. This starting point determines the path of airflow transition from the first volute 411 to the second volute 412. The volute tongue 413 refers to the arc-shaped airflow guiding structure inside the fan volute 410 near the air outlet. It can be constructed using a circular arc or involute curved surface. The volute tongue 413 guides the airflow smoothly into the duct and reduces airflow separation.

[0041] Specifically, when the angle θ1 between the outward protrusion of the second volute 412 and the volute tongue 413 is set to greater than 95°, the airflow direction inside the volute is optimized. This angle constraint keeps the expansion starting point of the second volute 412 away from the volute tongue 413 region, preventing eddies or backflows caused by sudden changes in airflow near the volute tongue 413. When the airflow enters the second volute 412 from the first volute 411, the curvature change of the flow path is gentler, and the velocity distribution tends to be more uniform, thereby reducing local pressure loss. At the same time, the larger angle θ1 provides sufficient space for the outward extension of the second volute 412, allowing it to avoid the range of motion of the wire rope when passing through the drive assembly 300, thus avoiding structural interference.

[0042] Further, continue to refer to Figure 4 As shown, the first volute 411 further includes a first air outlet, and the second volute 412 further includes a second air outlet. The air outlet angle θ2 of the first air outlet is smaller than the air outlet angle θ3 of the second air outlet.

[0043] The air outlet angle θ2 refers to the maximum angle at which the airflow can expand at the first air outlet. This can be achieved by adjusting the tilt angle of the duct outlet. Its smaller angle design allows the airflow to be concentrated and output at a higher speed. The air outlet angle θ3 refers to the maximum angle at which the airflow can expand at the second air outlet. This can be achieved by increasing the diffusion angle of the duct outlet. Its larger angle design expands the airflow coverage area.

[0044] The airflow at the first outlet is directed out at an angle θ2, forming a concentrated airflow towards the near-end area to quickly remove moisture from the surface of the clothes. The airflow at the second outlet is diffused out at an angle θ3, forming a dispersed airflow covering the far-end area to even out the air volume distribution throughout the drying area. By setting the angles θ2 and θ3 differently, the high-pressure airflow at the near-end outlet and the wide-area airflow at the far-end outlet complement each other, achieving the dual effect of rapid local drying and uniform overall coverage within a limited space.

[0045] In another optional embodiment of this application, the centrifugal fan module 400 includes a first fan module and a second fan module, the first fan module and the second fan module are stacked one on top of the other, and a portion of the first fan module extends through the drive assembly 300 to the other side of the drive assembly 300.

[0046] The difference between this embodiment and the previous embodiment is that the shape of the stepper fan volute 410 is changed in this embodiment, and the air ducts inside the first fan module and the second fan module, which are arranged in layers, are also set independently. The effect is similar to that of two centrifugal fan modules 400 stacked one on top of the other, so that the drying air formed is more concentrated and controllable.

[0047] Specifically, the first fan module includes a first volute 411 and a near-end air duct 520, and the second fan module includes a second volute 412 and a far-end air duct 530. The size of the first volute 411 is smaller than the size of the second volute 412. The first volute 411 is connected to the near-end air duct 520, and the near-end air duct 520 is connected to the near-end air outlet close to the first volute 411. The second volute 412 is connected to the far-end air duct 530, and the far-end air duct 530 is connected to the far-end air outlet away from the first volute 411.

[0048] The size of the first volute 411 being smaller than that of the second volute 412 means that the radial width of the first volute 411 is smaller than that of the second volute 412. This can be achieved by using different molds or a split structure, so that the second fan module can fit through the space constraints required to pass through the drive assembly 300. The second volute 412 is set to a larger size to increase the air volume.

[0049] Furthermore, in this embodiment, the impeller 420 includes a first impeller and a second impeller. The first impeller is disposed in the first volute 411, and the second impeller is disposed in the second volute 412. The first impeller and the second impeller are coaxially arranged. The size of the first impeller matches the size of the first volute 411, and the size of the second impeller matches the size of the second volute 412.

[0050] The coaxial arrangement of the first and second impellers means that they share the same axis of rotation. This can be achieved using a coupling or an integrally formed structure, ensuring that the upper and lower fans operate synchronously and share a common drive source. The first impeller is housed in the first volute 411, and the second impeller is housed in the second volute 412.

[0051] Optionally, in this embodiment, the first and second impellers are driven by the same drive motor. This avoids complicating the transmission structure due to layered arrangement. In this case, the first and second impellers rotate at the same speed, but can generate different air volumes due to their different sizes.

[0052] It is understood that the specific implementation of the first and second wind turbines being coaxially arranged and driven by the same drive motor can be designed and implemented by those skilled in the art according to specific structural and layout requirements. This embodiment will not provide a detailed description of the specific structure.

[0053] It should be noted that the fact that the first and second wind turbines are driven by the same drive motor is not a limitation of this application. In other embodiments, the first and second wind turbines may be driven by separate drive motors.

[0054] As a preferred technical solution, the centrifugal fan module 400 includes a first air inlet and a second air inlet. The first air inlet is located on the side of the first fan module away from the second fan module, and the second air inlet is located on the side of the second fan module away from the first fan module.

[0055] The first air inlet refers to the opening structure located at the top of the upper fan module, which can be implemented using rectangular, circular, or polygonal through-holes, and is used to guide external air into the interior of the first fan module. The second air inlet refers to the opening structure located at the bottom of the lower fan module, which can be implemented using a symmetrical layout with the first air inlet, and is used to guide external air into the interior of the second fan module. By arranging the two air inlets on the opposite sides of the stacked fan modules, independent airflow channels are formed, avoiding efficiency losses caused by intersecting airflow paths.

[0056] When the first fan module is running, outside air enters its interior through the first air inlet, is accelerated by the impeller 420, and is discharged from the near-end air outlet. When the second fan module is running, outside air enters its interior through the second air inlet, is accelerated by the impeller 420, and is discharged from the far-end air outlet. Since the first and second air inlets are located on opposite sides of the upper and lower fan modules, the two airflows do not interfere with each other during the intake phase, avoiding increased intake resistance due to spatial overlap.

[0057] As another optional embodiment of this application, refer to Figure 7 , 8 As shown, the centrifugal fan module 400 includes a fan casing 410 and a main air duct 500. The fan casing 410 includes a first casing 411 and a second casing 412 arranged in layers. A baffle 510 is provided in the main air duct 500. The baffle 510 is configured to divide the main air duct 500 into a near-end air duct 520 and a far-end air duct 530. The first casing 411 is connected to the near-end air duct 520, and the near-end air duct 520 is connected to a near-end air outlet close to the first casing 411. The second casing 412 is connected to the far-end air duct 530, and the far-end air duct 530 is connected to a far-end air outlet away from the first casing 411. The difference between this embodiment and the above embodiment lies in the specific arrangement of the air duct. This embodiment adopts a simpler air duct structure, which only requires the installation of a baffle 510. The drying air discharged from the first volute 411 changes direction and blows out towards the near end air outlet when it encounters the baffle 510 in the main air duct 500. The drying air blown out by the second volute 412 is not obstructed by the baffle 510 in the main air duct 500 and blows out towards the far end air outlet along the main air duct 500.

[0058] It should be noted that in this application, the near-end air outlet and the far-end air outlet refer to the air outlet that is closer to the fan volute 410 and the air outlet that is farther away from the fan volute 410. In actual use, there is no specific requirement for the division. When only the near-end air outlet and the far-end air outlet are divided, it can be understood that after selecting a part of the air outlets that are closer to the fan volute 410 as the near-end air outlets, the remaining air outlets are all classified as far-end air outlets.

[0059] In this embodiment, the drive component 300 includes a lifting motor, which is disposed in the middle of the clothes drying host 200; A steel wire rope extends from the middle of the clothes drying unit 200 to both ends, connecting the clothes drying rack to the lifting motor. The lifting motor is the power device that drives the clothes drying rack to rise and fall; it can be a DC motor with a reduction gear. Its central placement ensures a symmetrical distribution path for the steel wire rope, providing a symmetrical spatial basis for the cross-zone arrangement of the centrifugal fan module 400. The steel wire rope is a flexible traction component connecting the lifting motor and the clothes drying rack; it can be a multi-strand stainless steel wire twisted structure. The layout extending from the middle to both ends avoids uneven force distribution caused by unilateral traction.

[0060] Furthermore, a winding reel is provided on the power output shaft of the lifting motor, and the wire rope is wound on the winding reel, having a first working state wound around a first end of the winding reel and a second working state wound around a second end of the winding reel. The centrifugal fan module 400 is configured such that, when the wire rope is in the first working state and the second working state, the portion of the centrifugal fan module 400 extending through the drive assembly 300 to the other side of the drive assembly 300 does not interfere with the wire rope.

[0061] A reel is a cylindrical winding device used to wind and unwind steel wire ropes. By limiting the winding position of the steel wire rope at either the first or second end, it creates dynamic avoidance zones corresponding to two working states. In this embodiment, the centrifugal fan module 400, which swings up and down along the thickness direction of the clothes drying host 200 during the winding and unwinding process, should be configured so that it does not interfere with the steel wire rope when it rises to its highest position or falls to its lowest position.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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 clothes drying rack, characterized in that, include: Clothes drying unit; A drive component is disposed through the clothes drying host along the first centerline direction of the clothes drying host; The centrifugal fan module is provided in at least two sets. The centrifugal fan module is centrally symmetrically arranged inside the clothes drying host with respect to the geometric center of the clothes drying host, and a part of the centrifugal fan module extends through the drive assembly to the other side of the drive assembly.

2. The clothes drying rack according to claim 1, characterized in that, A portion of the centrifugal fan module passes under the drive assembly and extends to the other side of the drive assembly, or a portion of the centrifugal fan module passes over the drive assembly and extends to the other side of the drive assembly.

3. The clothes drying rack according to claim 2, characterized in that, The centrifugal fan module includes a fan volute, which has a first volute and a second volute stacked on top of each other. The second volute protrudes outward relative to the first volute, and the protruding part extends through the drive assembly to the other side of the drive assembly.

4. The clothes drying rack according to claim 3, characterized in that, The centrifugal fan also includes a fan wheel, which includes a first fan blade and a second fan blade along the axial direction. The first fan blade corresponds to the first volute, and the second fan blade corresponds to the second volute.

5. The clothes drying rack according to claim 4, characterized in that, The first fan blade and the second fan blade are an integral structure, or the first fan blade and the second fan blade are independent fan blade structures arranged coaxially.

6. The clothes drying rack according to claim 3, characterized in that, The angle θ1 between the initial position of the second volute protruding outward relative to the first volute and the volute tongue of the fan volute is greater than 95°.

7. The clothes drying rack according to claim 6, characterized in that, The first volute also includes a first air outlet, and the second volute also includes a second air outlet. The air outlet angle θ2 of the first air outlet is smaller than the air outlet angle θ3 of the second air outlet.

8. The clothes drying rack according to claim 1, characterized in that, The centrifugal fan module includes a first fan module and a second fan module, which are stacked one on top of the other. A portion of the first fan module extends through the drive assembly to the other side of the drive assembly.

9. The clothes drying rack according to claim 8, characterized in that, The first fan module includes a first volute and a near-end air duct, and the second fan module includes a second volute and a far-end air duct. The size of the first volute is smaller than that of the second volute. The first volute is connected to the near-end air duct, and the near-end air duct is connected to a near-end air outlet close to the first volute. The second volute is connected to the far-end air duct, and the far-end air duct is connected to a far-end air outlet away from the first volute.

10. The clothes drying rack according to claim 9, characterized in that, The first volute and the second volute are respectively provided with a first impeller and a second impeller. The first impeller and the second impeller are coaxially arranged. The size of the first impeller matches the size of the first volute, and the size of the second impeller matches the size of the second volute.

11. The clothes drying rack according to claim 8, characterized in that, The centrifugal fan module includes a first air inlet and a second air inlet. The first air inlet is located on the side of the first fan module away from the second fan module, and the second air inlet is located on the side of the second fan module away from the first fan module.

12. The clothes drying rack according to claim 1, characterized in that, The centrifugal fan module includes a fan casing and a main air duct. The fan casing includes a first casing and a second casing arranged in layers. A baffle is provided in the main air duct, which is configured to divide the main air duct into a near-end air duct and a far-end air duct. The first casing is connected to the near-end air duct, and the near-end air duct is connected to a near-end air outlet close to the first casing. The second casing is connected to the far-end air duct, and the far-end air duct is connected to a far-end air outlet away from the first casing.

13. The clothes drying rack according to claim 1, characterized in that, The driving component includes: The lifting motor is located in the middle of the clothes drying unit; A steel wire rope extends from the middle of the clothes drying host to both ends, connecting the clothes drying rack of the clothes drying machine to the lifting motor; A winding reel is provided on the power output shaft of the lifting motor. The wire rope is wound on the winding reel and has a first working state where it is wound around the first end of the winding reel and a second working state where it is wound around the second end of the winding reel. The centrifugal fan module is configured such that, when the wire rope is in the first working state and the second working state, the portion of the centrifugal fan module extending through the drive assembly to the other side of the drive assembly does not interfere with the wire rope.

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