A drum assembly and a clothes dryer

Abstract

This invention discloses a drum assembly and a clothes dryer. The drum assembly includes: an outer drum, comprising an outer drum sidewall and an outer drum bottom wall connected to one end of the outer drum sidewall, the outer drum bottom wall having multiple bottom air inlets penetrating through itself; and an inner drum disposed within the outer drum, the inner drum having a receiving cavity inside, the inner drum sidewall and the outer drum sidewall being spaced apart to form a flow gap; the inner drum sidewall includes multiple detachable sidewall units, the multiple sidewall units being sequentially connected to form a sleeve structure. The inner drum sidewall of the clothes dryer of this invention is composed of several detachable sidewall units, the modular design making the manufacturing, transportation, and maintenance of the drum assembly more convenient; the sidewall units can be replaced or repaired individually, reducing maintenance costs and improving assembly flexibility.

Description

Technical Field

[0001] This invention belongs to the field of home appliances, specifically, it relates to a drum assembly and a clothes dryer. Background Technology

[0002] Because dryers can quickly dry clothes in a short time (compared to air drying), they have gradually become an important choice for most families when purchasing household appliances. In related technologies, the dryer drum is a single drum. The drying function is achieved by the rotation of this single drum to shake and disperse the clothes inside, combined with internal air circulation to remove moisture. However, this structure has limitations in noise isolation; when heavy clothes are slammed against the drum, noise is directly transmitted, affecting the user experience.

[0003] However, the inner wall of existing dryer drums is generally smooth, and the part of the clothes in contact with the inner wall of the drum is not easily exposed to hot air. As a result, the moisture in the part of the clothes in contact with the inner wall of the drum is not easily removed, causing uneven drying of the clothes and requiring a longer drying time to completely dry the clothes.

[0004] Chinese Patent Application No. 202223590822.9 discloses a drum assembly and a clothes dryer. The outer drum of the drum assembly includes a first drum sidewall and a first drum bottom wall connected to one end of the first drum sidewall. The first drum bottom wall has a plurality of first air inlets penetrating through itself. The inner drum is disposed inside the outer drum and includes a second drum sidewall and a second drum bottom wall. One end of the second drum sidewall is connected to the end of the first drum sidewall away from the first drum bottom wall, and the second drum sidewall and the first drum sidewall are spaced apart to form a first flow gap. The second drum bottom wall is connected to the other end of the second drum sidewall. The second drum bottom wall is partially connected to the first drum bottom wall, and at least a portion of the second drum bottom wall and the first drum bottom wall are spaced apart to form a second flow gap. The second drum bottom wall has a second air inlet communicating with a receiving cavity. Some of the first air inlets communicate with the second air inlet, and some of the first air inlets communicate with the first flow gap. The inner cylinder in this design is a one-piece structure, and the inner cylinder is connected to the outer cylinder by welding, which increases the difficulty of disassembling and assembling the inner cylinder and makes it inconvenient to clean the outer wall of the inner cylinder and the inner wall of the outer cylinder.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drum assembly and dryer that provides drying efficiency while also enabling the disassembly and assembly of the inner drum, which is convenient for cleaning and maintenance of the dryer.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] A first aspect of the present invention provides a cylindrical assembly, the cylindrical assembly comprising:

[0009] The outer cylinder includes an outer cylinder sidewall and an outer cylinder bottom wall connected to one end of the outer cylinder sidewall. The outer cylinder bottom wall is provided with a plurality of bottom air inlets penetrating through itself.

[0010] An inner cylinder is disposed inside the outer cylinder, and the inner cylinder has a receiving cavity inside. The side wall of the inner cylinder and the side wall of the outer cylinder are spaced apart to form a flow gap.

[0011] The inner cylinder sidewall includes multiple detachable sidewall units, which are connected in sequence to form a sleeve structure.

[0012] Furthermore, the connecting ends of two adjacent sidewall units are respectively provided with a connecting pin and a pin hole, and the connecting pin is inserted into the pin hole to realize the connection of the two sidewall units;

[0013] Preferably, the connecting end is provided with a reinforcing member, and the connecting pin and the pin hole are provided on the reinforcing member.

[0014] Furthermore, the inner cylinder is provided with a plurality of connecting pieces at intervals at one end near the bottom wall of the outer cylinder; the bottom wall of the outer cylinder is provided with a bottom flange;

[0015] The two ends of the connector are respectively connected to the inner cylinder sidewall and the cylinder bottom flange;

[0016] Preferably, at least two connectors are provided at intervals on each sidewall unit.

[0017] Furthermore, the connector is a connecting rod, one end of which is connected to the inner cylinder sidewall, and the other end is detachably connected to the cylinder bottom flange;

[0018] Preferably, the bottom flange of the cylinder is provided with a connecting hole, one end of the connecting rod is fixedly connected to the side wall of the inner cylinder, and the other end is inserted into the connecting hole;

[0019] Preferably, the connecting rod is an adjustable threaded adjusting rod.

[0020] Furthermore, the inner peripheral wall of the outer cylinder sidewall is provided with a plurality of first limiting members at circumferential intervals;

[0021] The outer peripheral wall of the inner cylinder sidewall is provided with a plurality of second limiting members at intervals. The first limiting member and the second limiting member are respectively matched and cooperated to realize the relative fixation of the inner cylinder and the outer cylinder in the circumferential direction.

[0022] Preferably, the number of the first limiting members is at least equal to the number of the sidewall units.

[0023] Furthermore, the first limiting member is a protrusion protruding from the inner peripheral wall of the outer cylinder sidewall, and the second limiting member is a groove provided on the outer peripheral wall of the inner cylinder sidewall. The protrusion is embedded in the groove to achieve relative fixation of the inner cylinder and the outer cylinder in the circumferential direction.

[0024] Preferably, the protrusion is a plurality of protrusions arranged radially at intervals along the sidewall of the outer cylinder;

[0025] The groove consists of multiple recessed positions spaced radially along the inner cylinder, and the multiple protruding points are arranged in a one-to-one correspondence with the multiple recessed positions.

[0026] Furthermore, the inner cylinder sidewall is provided with a noise reduction layer; preferably, the noise reduction layer is noise reduction cotton.

[0027] Preferably, the noise reduction layer includes a plurality of noise reduction layer units, and the plurality of noise reduction layer units are respectively disposed corresponding to the plurality of sidewall units.

[0028] Furthermore, the inner cylinder is provided with a support frame for supporting the noise reduction layer;

[0029] An airflow duct is provided on the support frame and extends radially along the inner cylinder.

[0030] Furthermore, the airflow duct is provided with multiple air outlets at intervals;

[0031] The inner cylinder sidewall is provided with a plurality of first air inlets, and the plurality of first air inlets are provided in a one-to-one correspondence with the plurality of air outlets;

[0032] Preferably, the inner cylinder is provided with a plurality of second air inlets penetrating through itself to connect the flow gap and the receiving cavity;

[0033] Preferably, the diameter of the second air inlet is larger than the diameter of the first air inlet;

[0034] Preferably, the noise reduction layer has a through hole corresponding to the second air inlet.

[0035] In a second aspect, the present invention provides a clothes dryer, including a housing, a drying assembly, and the aforementioned drum assembly, wherein the drum assembly is rotatably disposed within the housing, and the drying assembly is disposed within the housing for providing hot airflow into the receiving cavity.

[0036] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0037] 1. The inner cylinder of the cylindrical assembly of the present invention has sidewalls composed of multiple detachable sidewall units. The modular design makes the manufacturing, transportation, and maintenance of the cylindrical assembly more convenient. The sidewall units can be replaced or repaired individually, reducing maintenance costs and improving assembly flexibility. Adjacent sidewall units are connected by connecting pins and pin holes, and reinforcing members are provided to enhance the strength of the connection end, ensuring the stability and durability of the inner cylinder structure.

[0038] 2. In this invention, the inner cylinder of the cylindrical assembly is connected to the bottom wall of the outer cylinder via multiple connectors. These connectors are adjustable threaded rods, facilitating adjustment of the relative position between the inner and outer cylinders and ensuring accurate and stable installation. The side wall of the outer cylinder and the outer peripheral wall of the inner cylinder are respectively provided with a first limiting member and a second limiting member, effectively preventing circumferential movement of the inner cylinder within the outer cylinder and ensuring the stability and smooth operation of the cylindrical assembly.

[0039] 3. The inner cylinder sidewall of the cylindrical assembly of the present invention is provided with a noise reduction layer, such as noise reduction cotton, which can effectively reduce the noise generated by the cylindrical assembly during operation and improve the user experience.

[0040] 4. The inner cylinder of the cylinder assembly of the present invention is provided with an airflow pipe and an air outlet, as well as a second air inlet hole that penetrates the inner cylinder, which optimizes the flow path of hot airflow, improves drying efficiency, and ensures the uniform distribution of hot airflow in the receiving cavity.

[0041] 5. The drum assembly of the present invention is suitable for clothes dryers, which provide hot airflow into the receiving cavity through the drying component, thereby achieving rapid drying of clothes. Furthermore, the design concept and structural features of this drum assembly also make it potentially applicable to other household appliances or industrial equipment that require a similar drum structure.

[0042] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0043] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0044] Figure 1 This is a structural schematic diagram of a cylindrical assembly provided in an embodiment of the present invention;

[0045] Figure 2 This is the present invention. Figure 1 Schematic diagram of the lateral section of the middle AA section;

[0046] Figure 3This is an exploded schematic diagram of a cylindrical assembly provided in an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the side wall unit of the inner cylinder of a cylindrical assembly provided in an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of the support frame provided on the side wall unit of the inner cylinder of the cylindrical assembly of the present invention.

[0049] In the diagram: 10. Outer cylinder; 11. Outer cylinder side wall; 12. Outer cylinder bottom wall; 121. Bottom air inlet; 122. Bottom flange; 123. Connecting hole; 20. Inner cylinder; 21. Receiving cavity; 22. Inner cylinder side wall; 221. Side wall unit; 2211. Connecting pin; 2212. Pin hole; 222. First air inlet; 223. Second air inlet; 23. Flow gap; 24. Connecting piece; 25. Support frame; 251. Airflow duct; 252. Air outlet.

[0050] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] like Figures 1 to 5As shown, in a first aspect, the present invention provides a drum assembly for a clothes dryer, the drum assembly comprising: an outer drum 10, including an outer drum sidewall 11 and an outer drum bottom wall 12 connected to one end of the outer drum sidewall 11, the outer drum bottom wall 12 being provided with a plurality of bottom air inlets 121 penetrating through itself;

[0055] The inner cylinder 20 is disposed inside the outer cylinder 10. The inner cylinder 20 has a receiving cavity 21 inside. The inner cylinder sidewall 22 and the outer cylinder sidewall 11 form a flow gap 23.

[0056] The inner cylinder sidewall 22 includes multiple detachable sidewall units 221, which are connected in sequence to form a sleeve structure.

[0057] In this embodiment, the provided drum assembly is applied to a clothes dryer, which can be a heat pump clothes dryer or an electric heating clothes dryer.

[0058] The tube assembly includes an inner tube 20 and an outer tube 10. The outer tube 10 includes an outer tube side wall 11 and an outer tube bottom wall 12 connected to one end of the outer tube side wall 11. The outer tube bottom wall 12 has multiple bottom air inlets 121 penetrating through itself. The inner tube 20 is disposed inside the outer tube 10. The inner tube 20 has a receiving cavity 21 inside. The inner tube side wall 22 and the outer tube side wall 11 form a flow gap 23. One end of the inner tube 20 has a dispensing port communicating with the receiving cavity 21, so that users can put or take out clothes through the dispensing port.

[0059] The outer drum 10 is used to communicate with the drying channel of the dryer so that the hot air output from the drying channel can enter through the air inlet 121 at the bottom of the outer drum bottom wall 12. The outer drum 10 is also used to connect with a drive device, such as a drive motor. The drive device drives the outer drum 10 to rotate, which in turn drives the inner drum 20 to rotate together, thereby causing the clothes in the inner drum 20 cavity 21 to tumble and increase the contact area with the hot air.

[0060] During the drying process, some of the hot air output from the drying channel of the dryer enters the receiving cavity 21 of the inner drum 20 through the air inlet 121 at the bottom of the drum, which raises the temperature inside the receiving cavity 21 and allows the hot air to be blown onto the clothes inside the receiving cavity 21. Some of the hot air flows through the air inlet 121 to the flow gap 23, which allows the hot air to exchange heat with the inner drum side wall 22, raising the temperature of the inner drum side wall 22. This accelerates the evaporation of moisture in the part of the clothes that is in contact with the inner drum side wall, thereby improving the uniformity of heating of the clothes and reducing the drying time of the dryer.

[0061] Because metal has high thermal conductivity, the inner drum 20 is generally made of metal to rapidly raise the temperature inside the cavity 21. To reduce the overall weight of the dryer and save production costs, the thickness of the inner drum 20 is generally designed to be thin.

[0062] The inner cylinder sidewall 22 includes multiple detachable sidewall units 221. Each sidewall unit 221 is independent and interchangeable, meaning that if one sidewall unit 221 is damaged or needs cleaning, it can be disassembled and replaced individually without affecting the use of the entire inner cylinder 20.

[0063] Multiple sidewall units 221 are connected in sequence to form a complete sleeve structure. Adjacent sidewall units 221 can be connected by mechanical locking, magnetic attraction or other technologies to ensure the tightness and stability of the connection between the sidewall units 221.

[0064] Furthermore, the connecting ends of two adjacent sidewall units 221 are respectively provided with connecting pins 2211 and pin holes 2212. The connecting pins 2211 are inserted into the pin holes 2212 to realize the connection of the two sidewall units 221.

[0065] Preferably, the connecting end is provided with a reinforcing member, and the connecting pin 2211 and the pin hole 2212 are provided on the reinforcing member.

[0066] In this embodiment, the connecting ends of two adjacent sidewall units 221 are respectively provided with connecting pins 2211 and pin holes 2212. That is, each sidewall unit 221 is provided with connecting pins 2211 and pin holes 2212 at both ends along the axial direction. When the two sidewall units 221 are installed, the connecting pin 2211 of one sidewall unit 221 is allowed to be precisely inserted into the pin hole 2212 of the other sidewall unit 221, thereby achieving a firm connection between the two.

[0067] It should be noted that the design of the connecting pin 2211 and the pin hole 2212 needs to take into account multiple factors such as dimensional accuracy, material strength and ease of assembly, in order to ensure the stability and durability of the connection.

[0068] To further enhance the stability of the connection of the side wall unit 221, a reinforcing member is provided at the connection end. That is, a reinforcing member is provided at both ends of the side wall unit 221 along the axial direction. Similarly, to enhance the strength of the side wall unit 221, reinforcing ribs are also provided on both sides along the radial direction, namely the side near the bottom wall 12 of the outer cylinder and the side forming the injection port.

[0069] The reinforcing member may be made of a more robust material than the main body of the sidewall unit 221, or have a more optimized structural form to improve the strength and rigidity of the local area. Incorporating the connecting pin 2211 and pin hole 2212 into the reinforcing member can significantly improve the load-bearing capacity of the connection and reduce the risk of deformation or damage due to external forces.

[0070] Furthermore, the inner cylinder 20 is provided with a plurality of connecting pieces 24 at intervals at one end near the bottom wall 12 of the outer cylinder; the bottom wall 12 of the outer cylinder is provided with a bottom flange 122;

[0071] The two ends of the connector 24 are respectively connected to the inner cylinder sidewall 22 and the cylinder bottom flange 122;

[0072] Preferably, at least two connectors 24 are provided at intervals on each sidewall unit 221.

[0073] Furthermore, the connecting member 24 is a connecting rod, one end of which is connected to the inner cylinder side wall 22, and the other end is detachably connected to the cylinder bottom flange 122;

[0074] Preferably, the bottom flange 122 of the cylinder is provided with a connecting hole 123, one end of the connecting rod is fixedly connected to the inner cylinder side wall 22, and the other end is inserted into the connecting hole 123;

[0075] Preferably, the connecting rod is an adjustable threaded adjusting rod.

[0076] In existing dryers, the inner drum 20 and the outer drum 10 are generally two independent parts. The inner drum 20 rotates while the outer drum 10 remains stationary. Because the inner drum 20 is thin and has low strength, it is easy for the inner drum 20 to deform when the drive device drives the inner drum 20 to rotate alone, which affects the stability of the rotation of the inner drum 20.

[0077] In this embodiment, the end of the inner cylinder 20 near the bottom wall 12 of the outer cylinder is connected to the bottom wall 12 of the outer cylinder 10, and the inner cylinder side wall 22 of the inner cylinder 20 is snapped into the outer cylinder side wall 11 of the outer cylinder 10, so that the inner cylinder 20 and the outer cylinder 10 are connected as a whole, thereby enhancing the overall strength of the cylinder assembly. During the drying process, the driving device drives the inner cylinder 20 and the outer cylinder 10 to rotate as a whole, thereby preventing the inner cylinder 20 from deforming and ensuring the stability of the rotation of the inner cylinder 20.

[0078] Specifically, the inner cylinder 20 has multiple connectors 24 near the bottom wall 12 of the outer cylinder. These connectors connect the inner cylinder 20 to the outer cylinder 10, ensuring the stability and integrity of the structure. The bottom wall 12 of the outer cylinder has a bottom flange 122 for fixing to other components or structures. The two ends of the connectors 24 are connected to the inner cylinder side wall 22 and the bottom flange 122 respectively, ensuring a tight connection between the inner cylinder 20 and the outer cylinder 10.

[0079] At least two connectors 24 are provided at intervals on each side wall unit 221, which enhances the stability and uniformity of the connection and prevents the inner cylinder 20 from shifting or deforming under external force.

[0080] The connector 24 is a connecting rod, one end of which is connected to the inner cylinder sidewall 22, and the other end is detachably connected to the cylinder bottom flange 122, facilitating the installation and maintenance of the sidewall unit 221 in the outer cylinder 10. The cylinder bottom flange 122 has a connecting hole 123. One end of the connecting rod is fixedly connected to the inner cylinder sidewall 22, and the other end is inserted into the connecting hole 123. Specifically, the end of the connecting rod connected to the cylinder bottom flange 122 has a bent portion, which bends towards the outer cylinder bottom wall 12 to ensure that the bent portion can be smoothly inserted into the connecting hole 123.

[0081] As a preferred option, the connecting rod is an adjustable-length threaded adjusting rod. During the installation of the side wall unit 221, the length of the connecting rod can be adjusted according to actual needs, thereby ensuring precise alignment and stable connection between the inner cylinder 20 and the outer cylinder 10. The threaded adjusting rod also has a certain elastic adjustment range, which can absorb minor displacements or deformations between the inner cylinder 20 and the outer cylinder 10 to a certain extent, enhancing the adaptability of the entire structure.

[0082] Furthermore, the inner peripheral wall of the outer cylinder sidewall 11 is provided with a plurality of first limiting members at circumferential intervals;

[0083] The outer peripheral wall of the inner cylinder sidewall 22 is provided with a plurality of second limiting members at intervals. The first limiting member and the second limiting member are respectively matched and cooperated to realize the relative fixation of the inner cylinder 20 and the outer cylinder 10 in the circumferential direction.

[0084] Preferably, the number of the first limiting members is at least equal to the number of the sidewall units 221.

[0085] Furthermore, the first limiting member is a protrusion protruding from the inner peripheral wall of the outer cylinder sidewall 11, and the second limiting member is a groove provided on the outer peripheral wall of the inner cylinder sidewall 22. The protrusion is embedded in the groove to achieve relative fixation of the inner cylinder 20 relative to the outer cylinder 10 in the circumferential direction.

[0086] Preferably, the protrusion is a plurality of protrusions arranged radially at intervals along the outer cylinder sidewall 11;

[0087] The groove is a plurality of recessed positions arranged radially at intervals along the inner cylinder sidewall 22, and the plurality of protruding points are arranged one-to-one with the plurality of recessed positions.

[0088] In this embodiment, the inner circumferential wall of the outer cylinder sidewall 11 is provided with a plurality of first limiting members at intervals along the circumferential direction, and the outer circumferential wall of the inner cylinder sidewall 22 is provided with a plurality of second limiting members at intervals. The plurality of first limiting members and the plurality of second limiting members are matched one-to-one to prevent the inner cylinder 20 from moving unnecessarily in the inner circumferential direction of the outer cylinder 10.

[0089] The number of first limiting members is at least equal to the number of side wall units 221, that is, each side wall unit 221 is fixed by at least one first limiting member. Specifically, the outer peripheral wall of the side wall unit 221 is provided with a limiting member radially at least at the middle position in the axial direction, which cooperates with the first limiting member provided on the inner peripheral wall of the outer cylinder side wall 11 to prevent the side wall unit 221 from moving in the circumferential direction.

[0090] The first limiting component is a protrusion protruding from the inner peripheral wall of the outer cylinder sidewall 11. The protrusion can be designed in various shapes and sizes to adapt to different application scenarios and needs. The second limiting component is a groove provided on the outer peripheral wall of the inner cylinder sidewall 22. The groove matches the protrusion. When the protrusion is embedded in the groove, a stable connection is formed between the inner cylinder 20 and the outer cylinder 10.

[0091] Specifically, the protrusions are configured as multiple protrusions spaced radially along the outer cylinder sidewall 11; the grooves are configured as multiple recesses corresponding to the protrusions along the inner cylinder sidewall 22. These recesses fit tightly with the protrusions, ensuring the stable position of the inner cylinder 20 within the outer cylinder 10.

[0092] Furthermore, the inner cylinder sidewall 22 is provided with a noise reduction layer; preferably, the noise reduction layer is noise reduction cotton.

[0093] Preferably, the noise reduction layer includes a plurality of noise reduction layer units, and the plurality of noise reduction layer units are correspondingly arranged with the plurality of sidewall units 221.

[0094] Furthermore, the inner cylinder 20 is provided with a support frame 25 for supporting the noise reduction layer;

[0095] An airflow duct 251 is provided on the support frame 25 and extends radially along the inner cylinder 20.

[0096] Furthermore, the airflow duct 251 is provided with a plurality of air outlets 252 at intervals;

[0097] The inner sidewall 22 of the inner cylinder is provided with a plurality of first air inlets 222, and the plurality of first air inlets 222 are provided in a one-to-one correspondence with the plurality of air outlets 252.

[0098] Preferably, the inner cylinder 20 is provided with a plurality of second air inlets 223 penetrating through itself to connect the flow gap 23 and the receiving cavity 21;

[0099] Preferably, the diameter of the second air inlet 223 is larger than the diameter of the first air inlet 222.

[0100] In this embodiment, a noise reduction layer is provided on the inner cylinder sidewall 22, which can reduce the noise during equipment operation; the noise reduction layer can effectively absorb and isolate noise, improving the user experience.

[0101] As a preferred option, the noise reduction layer uses noise reduction cotton, which is a commonly used sound insulation material with good sound absorption performance, relatively low cost, and easy processing and installation.

[0102] The inner cylinder 20 is equipped with a support frame 25, which provides stable support for the noise reduction layer and also provides the necessary structural strength for the inner cylinder 20. At the same time, it ensures that the noise reduction layer can be stably installed on the inner cylinder side wall 22, thereby effectively exerting its noise reduction effect. Specifically, each side wall unit 221 is equipped with a support unit to provide a certain support for the corresponding noise reduction layer.

[0103] The support frame 25 is equipped with an airflow duct 251 extending radially along the inner drum 20. Multiple air outlets 252 are spaced apart on the airflow duct 251, and multiple first air inlets 222 are provided on the inner drum 20. Each first air inlet 222 corresponds to one of the air outlets 252 on the airflow duct 251. Strong airflow entering the airflow duct 251 flows sequentially through the air outlets 252 and the first air inlets 222 into the receiving cavity 21 of the inner drum 20, acting on the surface of the clothing. The air outlets 252 can direct airflow in different directions, thereby changing the direction of airflow and allowing the clothing to receive airflow from different directions, increasing localized airflow and improving drying efficiency.

[0104] The inner cylinder 20 is provided with multiple second air inlets 223 that penetrate through itself. The second air inlets 223 connect the flow gap 23 (i.e., the gap between the inner cylinder 20 and the outer cylinder 10) and the receiving cavity 21 (the space inside the inner cylinder 20). The drying airflow can enter the inner cylinder 20 through the second air inlets 223, further increasing the airflow inside the inner cylinder 20.

[0105] Preferably, the diameter of the second air inlet 223 is larger than that of the first air inlet 222, which allows more drying airflow to enter the inner cylinder 20 through the second air inlet 223, thereby improving the airflow efficiency inside the inner cylinder 20.

[0106] When installing the inner cylinder 20 into the outer cylinder 10, a sidewall unit 221 is placed inside the outer cylinder 10, and the end of the connecting rod is placed into the bottom flange 122, specifically inserted into the connecting hole 123 of the bottom flange 122 for fixing the sidewall unit 221. After insertion, the second limiting member on the inner cylinder sidewall 22 and the first limiting member on the outer cylinder 10 are aligned. Then, the threaded part of the connecting member 24 is rotated to adjust the length and position of the connecting member 24 until the first and second limiting members are completely fitted, completing the installation of the first sidewall unit 221. The remaining sidewall units 221 are installed in the same way. During the installation process, it is ensured that the connecting pins 2211 at the ends of two adjacent sidewall units 221 are inserted into the corresponding pin holes 2212 to ensure that a sleeve structure is formed after all sidewall units 221 are installed.

[0107] In a second aspect, the present invention provides a clothes dryer, including a housing, a drying assembly, and the aforementioned drum assembly, wherein the drum assembly is rotatably disposed within the housing, and the drying assembly is disposed within the housing for providing hot airflow into the receiving cavity 21.

[0108] In this embodiment, a clothes dryer is provided, including a housing, a drying component, and a drum assembly. The drum assembly is rotatably disposed within the housing, and the drying component is disposed within the housing to provide hot airflow into the receiving cavity 21.

[0109] The drying assembly may include a drying duct. For heat pump dryers, a condenser may be installed inside the drying duct. The heat pump dryer includes a heat exchange system. The condenser is connected to the compressor of the heat exchange system. The compressor compresses the internal refrigerant into a high-temperature, high-pressure gas and discharges it into the condenser for cooling and heat dissipation, thereby raising the temperature of the condenser and heating the air inside the drying duct. For electric heating dryers, an electric heating element may be installed inside the drying duct. The electric heating element generates heat when energized, thereby heating the air inside the drying duct.

[0110] The drying air duct is connected to the cylinder assembly, and a fan can be installed in the drying air duct to blow the hot air in the drying air duct into the cylinder assembly.

[0111] During the drying process, the hot air in the flow gap 23 can enter the receiving cavity 21 through the second air inlet 223. That is to say, the hot air can be sprayed onto the surface of the clothes through the first air inlet 222 and can also enter the receiving cavity 21 around the inner drum 20. On the one hand, this further increases the contact area between the clothes and the hot air, and further improves the uniformity of the clothes being heated. On the other hand, the hot air blown from the second air inlet 223 onto the clothes creates a thin airflow gap between the clothes and the inner wall of the inner drum 20, preventing the moisture in the part of the clothes in contact with the inner wall of the inner drum 20 from not being discharged in time, thereby further accelerating the removal of the moisture contained in the clothes in the receiving cavity 21 and reducing the drying time of the dryer.

[0112] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A drum assembly for a clothes dryer, characterized in that, The cylindrical assembly includes: The outer cylinder (10) includes an outer cylinder side wall (11) and an outer cylinder bottom wall (12) connected to one end of the outer cylinder side wall (11). The outer cylinder bottom wall (12) is provided with a plurality of cylinder bottom air inlets (121) penetrating through itself. An inner cylinder (20) is disposed inside the outer cylinder (10). The inner cylinder (20) has a receiving cavity (21) inside. The inner cylinder sidewall (22) and the outer cylinder sidewall (11) are spaced apart to form a flow gap (23). The inner cylinder sidewall (22) includes multiple detachable sidewall units (221), which are connected in sequence to form a sleeve structure.

2. The cylindrical assembly according to claim 1, characterized in that, The connecting ends of two adjacent sidewall units (221) are respectively provided with connecting pins (2211) and pin holes (2212). The connecting pins (2211) are inserted into the pin holes (2212) to realize the connection of the two sidewall units (221). Preferably, the connecting end is provided with a reinforcing member, and the connecting pin (2211) and the pin hole (2212) are provided on the reinforcing member.

3. The cylindrical assembly according to any one of claims 1-2, characterized in that, The inner cylinder (20) is provided with a plurality of connectors (24) at intervals at one end near the bottom wall (12) of the outer cylinder; the bottom wall (12) of the outer cylinder is provided with a bottom flange (122); The two ends of the connector (24) are respectively connected to the inner cylinder sidewall (22) and the cylinder bottom flange (122); Preferably, at least two connectors (24) are provided at intervals on each sidewall unit (221).

4. The cylindrical assembly according to claim 3, characterized in that, The connector (24) is a connecting rod, one end of which is connected to the inner cylinder side wall (22), and the other end is detachably connected to the cylinder bottom flange (122); Preferably, the bottom flange (122) of the cylinder is provided with a connecting hole (123), one end of the connecting rod is fixedly connected to the inner cylinder side wall (22), and the other end is inserted into the connecting hole (123); Preferably, the connecting rod is an adjustable threaded adjusting rod.

5. The cylindrical assembly according to any one of claims 1-4, characterized in that, The inner circumferential wall of the outer cylinder sidewall (11) is provided with a plurality of first limiting members at circumferential intervals; The outer peripheral wall of the inner cylinder sidewall (22) is provided with a plurality of second limiting members at intervals. The first limiting member and the second limiting member are matched one by one to realize the relative fixation of the inner cylinder (20) and the outer cylinder (10) in the circumferential direction. Preferably, the number of the first limiting members is at least equal to the number of the sidewall units (221).

6. The cylindrical assembly according to claim 5, characterized in that, The first limiting member is a protrusion protruding from the inner peripheral wall of the outer cylinder sidewall (11), and the second limiting member is a groove provided on the outer peripheral wall of the inner cylinder sidewall (22). The protrusion is embedded in the groove to achieve relative fixation of the inner cylinder (20) and the outer cylinder (10) in the circumferential direction. Preferably, the protrusions are a plurality of protrusions arranged radially at intervals along the sidewall (11) of the outer cylinder; The groove is a plurality of recessed positions arranged radially at intervals along the inner cylinder sidewall (22), and the plurality of protruding points are arranged one-to-one with the plurality of recessed positions.

7. The cylindrical assembly according to any one of claims 1-6, characterized in that, The inner cylinder sidewall (22) is provided with a noise reduction layer; preferably, the noise reduction layer is noise reduction cotton; Preferably, the noise reduction layer includes a plurality of noise reduction layer units, and the plurality of noise reduction layer units are respectively disposed corresponding to the plurality of sidewall units (221).

8. The cylindrical assembly according to claim 7, characterized in that, The inner cylinder (20) is provided with a support frame (25) for supporting the noise reduction layer; An airflow duct (251) is provided on the support frame (25) and extends radially along the inner cylinder (20).

9. The cylindrical assembly according to claim 8, characterized in that, The airflow duct (251) is provided with multiple air outlets (252) at intervals; The inner cylinder sidewall (22) is provided with a plurality of first air inlets (222), and the plurality of first air inlets (222) are provided in a one-to-one correspondence with the plurality of air outlets (252); Preferably, the inner cylinder (20) is provided with a plurality of second air inlets (223) penetrating through itself to connect the flow gap (23) and the receiving cavity (21); Preferably, the diameter of the second air inlet (223) is larger than the diameter of the first air inlet (222); Preferably, the noise reduction layer has a through hole corresponding to the second air inlet 223.

10. A clothes dryer, characterized in that, It includes a housing, a drying assembly, and a cylindrical assembly as described in any one of claims 1 to 9, wherein the cylindrical assembly is rotatably disposed within the housing, and the drying assembly is disposed within the housing for providing hot airflow into the receiving cavity (21).

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