Drying drum and clothes drying equipment

Abstract

The present invention provides a drying cylinder, which is composed of a two-layer barrel-shaped structure with an inner and outer shell, and the inner cylinder is provided with air holes connecting the inner and outer sides. The present invention also introduces a clothes drying device, which includes the above-mentioned drying cylinder; an air duct, the air outlet end of which is connected to the interlayer chamber of the drying cylinder, and the air inlet end of which is connected to the drying chamber of the drying cylinder, forming a circulating air duct; and a condenser provided on the air duct for dehumidifying the air flow passing through. Through the above-mentioned arrangement, the high-temperature drying airflow of the clothes drying device can be evenly distributed and diverted through the interlayer between the double-layer cylinders, and then sprayed into the drying cylinder through the air holes on the inner cylinder, so as to improve the uniformity of the distribution of the drying airflow in the drying cylinder, so that the contact degree between the drying airflow and the clothes to be dried is significantly improved, thereby achieving the effect of improving the clothes drying rate of the clothes drying device.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothes drying equipment, and in particular relates to a drying drum of clothes drying equipment, and also relates to a clothes drying equipment equipped with the drying drum. Background Art

[0002] At present, the drying equipment on the market includes: dryers or washer-dryers, etc.; the existing drying equipment is generally divided into two types: direct exhaust type and circulation type.

[0003] Although direct-exhaust clothes drying equipment has a simple structure and a fast dehumidification rate, it has the disadvantage of interfering with indoor humidity and reducing indoor environmental comfort, and is gradually being replaced by circulating clothes drying equipment.

[0004] The working principle of the circulating clothes drying equipment is as follows: obtain heat from the heat source, heat the air, reduce the relative humidity, and obtain a high-temperature dry airflow; the high-temperature dry airflow enters the drying drum, absorbs moisture from the clothes, and the relative humidity increases, turning into a high-temperature hot and humid airflow; the high-temperature hot and humid airflow flows into the air duct, and is cooled and dehumidified at the condenser in the air duct to form a dehumidified low-temperature airflow; the dehumidified low-temperature airflow flows through the heat source again, absorbs heat from the heat source, heats up, and then turns into a high-temperature dry airflow to complete the entire cycle process.

[0005] Although circulating clothes drying equipment has the advantage of not affecting the relative humidity of the surrounding environment, it has the disadvantages of long drying time and poor drying effect. The main reasons for this are: poor cooling and dehumidification effect and uneven gas flow in the drum.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a drying drum to increase the contact between the drying airflow and the clothes, improve the distribution uniformity of the drying airflow, and thus improve the drying efficiency.

[0008] In order to achieve the above-mentioned purpose, the basic concept of the technical solution adopted by the present invention is:

[0009] The present invention provides a drying cylinder, which is composed of a two-layer barrel-shaped structure with an inner and an outer sleeve. The inner cylinder is provided with air holes communicating with the inner and outer sides.

[0010] Furthermore, an interlayer chamber is formed between the inner layer drum and the outer layer drum, and the interior of the inner layer drum is surrounded by a drying chamber for placing clothes; a plurality of ventilation holes are arranged on the wall of the inner layer drum, and each ventilation hole is connected to the interlayer chamber and the drying chamber respectively;

[0011] Preferably, the aperture of the end of the vent hole connected to the interlayer chamber is larger than the aperture of the end of the vent hole connected to the clothes drying chamber;

[0012] Preferably, the vent hole is a tapered hole that gradually narrows toward the interior of the inner tube.

[0013] Furthermore, the inner layer cylinder and the outer layer cylinder are coaxially arranged, and the cylinder diameter of the inner layer cylinder is smaller than the cylinder diameter of the outer layer cylinder;

[0014] Preferably, the inner tube and the outer tube are connected at their openings, and the opening side of the interlayer chamber is sealed;

[0015] Preferably, the inner tube and the outer tube have their openings flush and are sealed together, so that the inner tube and the outer tube form an integral piece.

[0016] Preferably, there is a gap between the bottoms of the inner layer cylinder and the outer layer cylinder.

[0017] Furthermore, the inner layer of the drying cylinder has multiple circles of air holes arranged at intervals along the axis of the cylinder, and each circle has multiple air holes arranged at equal intervals and located in the same cross-section of the drying cylinder; the aperture of the air holes close to the bottom of the drying cylinder is larger than the aperture of the air holes close to the mouth of the drying cylinder.

[0018] The present invention also provides a clothes drying device to achieve the purpose of increasing the drying rate of clothes. In order to achieve the above-mentioned invention object, the specific technical solutions adopted by the present invention are as follows:

[0019] The present invention also introduces a clothes drying device, which includes:

[0020] A drying cylinder, which is any of the drying cylinders described above;

[0021] The air duct, the air outlet end is connected to the interlayer chamber of the drying cylinder, and the air inlet end is connected to the drying chamber of the drying cylinder, forming a circulating air duct;

[0022] A condenser is provided on the air duct to dehumidify the air flowing through it.

[0023] Furthermore, the air duct includes a main air duct and multiple branch air ducts connected in parallel. The air inlet end of the main air duct is connected to the air outlet end of each branch air duct, the air outlet end of the main air duct is connected to the interlayer cavity between the inner and outer tubes of the drying cylinder, and the air inlet end of each branch air duct is connected to the drying cavity inside the inner tube of the drying cylinder.

[0024] Furthermore, the air inlet end of each branch air duct is connected to the tube mouth end of the clothes drying chamber, and the air outlet end of the main air duct is connected to the tube bottom end of the interlayer chamber.

[0025] Furthermore, the air outlet end of the main air duct is connected to multiple air outlet connectors connected in parallel; multiple openings connected to the interlayer chamber are arranged on the outer periphery of the bottom of the outer tube of the drying tube, and the air outlet of each air outlet connector is connected to each opening in a one-to-one correspondence.

[0026] Furthermore, the air inlet end of the main air duct is connected to the main condenser, the air outlet end of the main condenser is connected to the air inlet end of the main air duct, and the air inlet end of the main condenser is connected to the air outlet end of each branch air duct.

[0027] Furthermore, a heating device for heating the airflow passing through and a power device for providing power to the gas flow in the air duct are sequentially provided on the main air duct along the gas flow direction.

[0028] Furthermore, each branch air duct is provided with a pre-condenser.

[0029] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0030] 1. Through the above arrangement, the high-temperature drying airflow of the clothes drying equipment can be evenly distributed and diverted through the interlayer between the double-layer drums, and then sprayed into the drying drum through the air holes on the inner drum, so as to improve the uniformity of the distribution of the drying airflow in the drying drum, and significantly improve the contact between the drying airflow and the clothes to be dried, thereby achieving the effect of improving the clothes drying rate of the clothes drying equipment.

[0031] 2. By providing ventilation holes on the drying cylinder, the airflow velocity of the drying air in the interlayer chamber sprayed into the drying chamber through the ventilation holes is increased, thereby increasing the coverage area of ​​the sprayed airflow, achieving full contact between the air and the clothes in the drying cylinder, and helping to ensure the fluffiness of the clothes.

[0032] 3. Through the above arrangement, the drying airflow flowing into the drying drum can first flow into the interlayer space, and the airflow flowing into the interlayer space contacts the inner drum to directly heat the inner drum and increase the temperature of the inner drum, so that the drying airflow can indirectly contact and dry the clothes to be dried through the inner drum, making the contact heat exchange efficiency between the drying airflow and the clothes to be dried higher, thereby significantly improving the drying rate of the clothes to be dried in the drying drum.

[0033] At the same time, the present invention has a simple structure, significant effects, and is suitable for popularization and use.

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0036] Figure 1is a schematic structural diagram of a clothes drying device according to an embodiment of the present invention;

[0037] Figure 2 2 is a schematic diagram of the cross-sectional structure of a drying cylinder in an embodiment of the present invention;

[0038] Figure 3 4 is a control flow chart of the clothes drying device in an embodiment of the present invention.

[0039] Description of the main components in the figure:

[0040] 1. Drying cylinder; 2. Air duct; 3. Condenser; 4. Power unit; 5. Heating device; 6. Main air duct; 7. Branch air duct; 8. Inner cylinder; 9. Outer cylinder; 10. Drying chamber; 11. Interlayer chamber; 12. Air vent; 13. Main condenser; 14. Pre-cooling condenser; 15. Air inlet; 16. Air outlet connector; 17. Air outlet.

[0041] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0045] like Figures 1 to 3 As shown, an embodiment of the present invention introduces a clothes drying device, which includes:

[0046] The drying drum 1 has a drying chamber 10 for holding the clothes to be dried;

[0047] The air duct 2 is provided outside the drying cylinder 1, and both ends of the air duct 2 are connected to the drying cylinder 1 to form a circulating air duct for air flow;

[0048] The condenser 3 is provided on the air duct 2 and performs dehumidification treatment on the air flow passing through the air duct 2 to reduce the humidity of the circulating air and extract the water from the clothes to be dried in the drying drum 1 .

[0049] Of course, in the embodiment of the present invention, in order to achieve the effect of heating and drying the clothes in the drying drum 1, the clothes drying device should also include the following structures:

[0050] The power device 4 is provided on the air duct 2 to provide flow power to the air flow in the circulating air duct, driving the drying cylinder 1 and the air duct 2 to form a unidirectional circulating air flow;

[0051] The heating device 5 is arranged on the air duct 2 and downstream of the condenser 3. It heats the air flow flowing through the circulating air duct and the dry gas after dehumidification treatment by the condenser 3, so that the air flow flowing into the drying cylinder 1 is a high-temperature dry air flow, thereby improving the drying efficiency of the drying equipment.

[0052] In this embodiment of the present invention, the drying drum 1 of the clothes drying apparatus comprises a two-layer tubular structure, with inner and outer tubular elements nested within each other. The inner tubular element 8 is provided with air vents 12, connecting the inner and outer tubular elements. This allows the high-temperature drying airflow of the clothes drying apparatus to be evenly distributed and divided through the interlayer chamber 11 between the two tubular elements before being sprayed into the drying drum 1 through the air vents 12 in the inner tubular element 8. This improves the uniformity of the drying airflow within the drying drum 1, significantly enhancing the contact between the drying airflow and the clothes being dried, and thereby increasing the drying rate of the clothes drying apparatus.

[0053] Example 1

[0054] like Figure 1 and Figure 2 As shown, this embodiment introduces a drying cylinder 1, which comprises a two-layer tubular structure, the inner tubular structure being an inner tubular 8 and the outer tubular structure being an outer tubular 9. The inner tubular 8 is provided with air vents 12 that connect the inner and outer tubulars and allow air to flow through. In this embodiment, the axes of the inner and outer tubulars 8 and 9 can be arranged horizontally, vertically, or tilted with the tubular openings facing upward. Preferably, the drying cylinder 1 is arranged horizontally, and the axes of the inner and outer tubulars 8 and 9 are also arranged horizontally.

[0055] In this embodiment, the space formed between the inner tube 8 and the outer tube 9 of the drying tube 1 is an interlayer chamber 11, and the space enclosed inside the inner tube 8 is a drying chamber 10 for placing clothes; a plurality of air holes 12 are arranged on the tube wall of the inner tube 8, and the air holes 12 are evenly arranged at intervals on the tube bottom and tube side walls of the inner tube 8; the air holes 12 are respectively connected to the interlayer chamber 11 and the drying chamber 10, so that the drying air flow flowing in through the interlayer chamber 11 can be sprayed into various places in the drying chamber 10 through the evenly arranged air holes 12.

[0056] At the same time, in this embodiment, through the above-mentioned arrangement, the drying airflow flowing into the drying drum 1 can first flow into the interlayer chamber 11, and the airflow flowing into the interlayer chamber 11 contacts the inner drum 8 to directly heat the inner drum 8 and increase the temperature of the inner drum 8, so that the drying airflow can indirectly contact and dry the clothes to be dried through the inner drum 8, making the contact heat exchange efficiency between the drying airflow and the clothes to be dried higher, thereby significantly improving the drying rate of the clothes to be dried in the drying drum 1.

[0057] In this embodiment, the air holes 12 provided on the inner tube 8 of the drying tube 1 are two sections of variable diameter holes with different apertures. The large end of the air holes is connected to the interlayer chamber 11, and the small end is connected to the drying chamber 10, so as to increase the flow rate of the air flow injected into the interior of the drying tube 1.

[0058] Preferably, the air holes 12 provided on the inner tube 8 of the drying tube 1 are tapered holes that gradually narrow toward the inside of the inner tube 8, so that the velocity of the air flow flowing into the drying chamber 10 through the air holes 12 is increased, thereby increasing the coverage area of ​​the jet air flow, achieving full contact between the gas and the clothes in the drying tube 1, and helping to ensure the fluffiness of the clothes.

[0059] In this embodiment, the inner tube 8 and the outer tube 9 are coaxially arranged, and the diameter of the inner tube 8 is smaller than the diameter of the outer tube 9, so that the distance between the inner tube 8 and the outer tube 9 forms an interlayer chamber 11; at the same time, there is a gap between the bottoms of the inner tube 8 and the outer tube 9, and the above gap is connected with the distance between the side walls of the inner tube 8 and the outer tube 9 to jointly constitute the interlayer chamber 11.

[0060] In this embodiment, the tube openings of the inner tube 8 and the outer tube 9 are arranged flush and connected to form an integral part, so that the tube opening side of the interlayer chamber 11 formed by the gap between the inner tube 8 and the outer tube 9 is closed, so that the interlayer chamber 11 forms a chamber with only the air vent 12 as the air outlet.

[0061] In this embodiment, an air inlet 15 connected to the interlayer chamber 11 is provided on the outer tube 9 of the drying tube 1, and the air inlet 15 connects the interlayer chamber 11 with the external atmosphere; preferably, the air inlet 15 is located at the bottom of the outer tube 9 of the drying tube 1; further preferably, the air inlet 15 is located at the outer periphery of the bottom of the outer tube 9, so that the drying airflow flowing into the interlayer chamber 11 through the air inlet 15 can flow directly to the tube mouth end of the drying tube 1 through the gap space between the tube walls of the inner tube 8 and the outer tube 9, so that the drying airflow can be distributed as evenly as possible in the interlayer chamber 11, thereby improving the drying efficiency.

[0062] In this embodiment, the inner tube 8 of the drying drum 1 has multiple circles of air holes 12 arranged at intervals along the drum axis. Each circle has multiple air holes 12 arranged at equal intervals and located within the same cross-section of the drying drum 1. The diameter of the air holes 12 near the bottom of the drying drum 1 is larger than the diameter of the air holes 12 near the drum opening 1. Consequently, the diameter of the air holes 12 near the end of the drying drum air inlet 15 is smaller than the diameter of the air holes 12 far from the drying drum air inlet 15. This ensures uniform airflow from each air hole and evenly distributes the drying airflow flowing into the drying chamber of the drying drum, further improving the drying efficiency of the drying apparatus.

[0063] Example 2

[0064] like Figures 1 to 2 As shown, this embodiment introduces a clothes drying device, which includes: a drying drum 1, which adopts the structure described in the first embodiment above; and an air duct 2, which is arranged outside the drying drum 1, with the air outlet end of the air duct 2 communicating with the interlayer chamber 11 of the drying drum 1 and the air inlet end communicating with the clothes drying chamber 10 of the drying drum 1, so as to form a circulating air duct in which air flows sequentially through the interlayer chamber 11 of the drying drum 1, the clothes drying chamber 10 of the drying drum 1, and the air duct 2. As a result, the clothes drying device can utilize the double-layer structure of the drying drum 1 to evenly divide the drying airflow, which is then injected into the clothes drying chamber 10 through the air holes 12 to dry the clothes, thereby improving the contact between the drying airflow and the clothes and improving the drying efficiency. At the same time, the drying airflow flowing into the interlayer space heats the inner drum 8, thereby raising the temperature in the clothes drying chamber 10 and indirectly assisting in drying the clothes in the clothes drying chamber 10, thereby further improving the drying rate.

[0065] In this embodiment, the air duct 2 includes a main air duct 6 and multiple branch air ducts 7 connected in parallel. The air inlet end of the main air duct 6 is connected to the air outlet end of each branch air duct 7. The air outlet end of the main air duct 6 is connected to the interlayer chamber 11 between the inner and outer tubes of the drying cylinder 1. The air inlet end of each branch air duct 7 is connected to the drying chamber 10 inside the inner tube 8 of the drying cylinder 1.

[0066] In this embodiment, the air inlet end of each branch air duct 7 is connected to the tube mouth end of the clothes drying chamber 10, and the air outlet end of the main air duct 6 is connected to the tube bottom end of the interlayer chamber 11.

[0067] In this embodiment, the air outlet end of the main air duct 6 is connected to a plurality of air outlet connectors 16 connected in parallel; a plurality of air inlets 15 connected to the interlayer chamber 11 are arranged on the outer periphery of the bottom of the outer layer cylinder 9 of the drying cylinder 1, and the air outlet side of each air outlet connector 16 is connected to each air inlet 15 one by one.

[0068] In this embodiment, the air outlet connector 16 can be configured as any existing connection structure between an air duct and a drying drum. Of course, in order to achieve the rotation of the drying drum, the following configuration can also be implemented: an annular air outlet connector is provided at the air outlet end of the air duct, the annular air outlet connector is coaxially arranged with the drying drum, and the air outlet side of the air outlet connector is in contact with the outer side of the bottom of the drying drum; an air outlet provided on the outer periphery of the bottom of the outer drum is correspondingly arranged and connected to the annular air outlet connector, and the distance between the air outlet and the axis of the drying drum is equal to the radial dimension of the annular air outlet, so as to ensure that the air outlet is always connected to the air outlet connector during the rotation of the drying drum (not indicated in the drawings).

[0069] In this embodiment, the inner drum 8 of the drying drum 1 is open at its opening, forming a clothing loading port for loading clothes into the drying chamber 10 of the drying drum 1. The outer shell of the drying apparatus is provided with an openable door that, when closed, seals the clothing loading port. An air outlet 17 is provided at the opening of the drying drum 1, communicating with the air inlet of each branch air duct 7.

[0070] In this embodiment, the air outlet 17 may be any existing structure. For example, a channel extending sequentially through the inner tube, interlayer chamber, and outer tube is provided at the opening of the drying cylinder, with this channel constituting the air outlet. Similarly, to ensure rotation of the drying cylinder, an annular air inlet connector similar to the aforementioned air outlet connector may be provided at the opening of the drying cylinder, which will not be discussed again here (not shown in the accompanying drawings).

[0071] In this embodiment, the air inlet of the main air duct 6 is connected to a main condenser 13, the air outlet of the main condenser 13 is connected to the air inlet of the main air duct 6, and the air inlet of the main condenser 13 is connected to the air outlet of each branch air duct 7. In this embodiment, a heating device 5 for heating the air flowing through the main air duct 6 and a power device 4 for providing power to the air flow in the air duct are sequentially provided along the air flow direction.

[0072] In this embodiment, each branch air duct 7 is provided with a pre-condenser 14, and each pre-condenser 14 can condense and dehumidify part of the drying air flow flowing through the branch air duct 7 to adjust the working mode of the drying equipment and improve the drying rate.

[0073] By arranging a main condenser 13 in the main air duct 6 through which the entire drying air flow flows, and respectively arranging pre-condensers 14 in the branch air ducts 7 through which part of the drying air flow flows, the main condenser 13 and each sub-condenser 14 can be opened and closed separately or in combination, thereby achieving the corresponding adjustment and switching of the drying mode of the drying equipment, thereby accelerating the drying rate of the drying equipment.

[0074] Example 3

[0075] like Figure 3 As shown, this embodiment introduces a control method applied to the clothes drying device described in the second embodiment, which includes the following steps:

[0076] Step 1: Start the drying equipment;

[0077] Step 2: The clothes drying equipment starts the power device to form a drying airflow between the air duct and the drying drum;

[0078] Step 3: The clothes drying device starts the heating device to heat the airflow passing through the drying device to increase the temperature of the drying airflow in the circulating air duct;

[0079] Step 4: Determine whether the load of the clothes drying equipment is greater than the set value; if so, proceed to step 5; if not, proceed to step 6;

[0080] Step 5: Execute the maximum condensing mode, with both the main condenser and the pre-cooling condenser turned on;

[0081] Step 6: Execute normal condensing mode, with only the main condenser turned on;

[0082] Step 7: Determine whether the clothes drying is completed; if so, turn off the clothes drying device; if not, continue drying.

[0083] In this embodiment, the load of the drying device is: the weight of the clothes to be dried in the drying drum * (drying drum inlet air temperature - drying drum outlet air temperature); the above-mentioned weight of the clothes to be dried in the drying drum, the drying drum inlet air temperature and the drying drum outlet air temperature are respectively measured by the weight sensor and temperature sensor provided on the clothes processing device.

[0084] In this embodiment, when executing the above-mentioned step 5, a real-time judgment is made as to whether the load of the clothes drying equipment is greater than the set value. If it is less than the set value, step 6 is started and the clothes drying equipment switches to the normal condensing mode; if it is greater than the set value, step 5 is continued and the clothes drying equipment continues to operate in the maximum condensing mode.

[0085] In this embodiment, when executing step 7 above, any existing method can be used to determine whether the drying drum is complete. For example, real-time monitoring of the drying drum inlet air temperature and the drying drum outlet air temperature can be performed. When the difference between the drying drum inlet air temperature and the drying drum outlet air temperature exceeds a set temperature difference, drying is determined to be complete. In this embodiment, after the drying device completes drying, the heating device is first turned off. After the temperature in the drying drum drops below a safe temperature, the power device is turned off to cool the drying drum with air, ensuring the safe operation of the drying device.

[0086] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A drying cylinder, characterized in that: It is composed of a two-layer barrel structure with an inner and outer shell. The inner barrel is provided with air holes connecting the inner and outer sides. An interlayer chamber is formed between the inner and outer drums, and the interior of the inner drum is surrounded by a drying chamber for placing clothes; a plurality of ventilation holes are arranged on the wall of the inner drum, and each ventilation hole connects the interlayer chamber and the drying chamber respectively; The diameter of the vent hole at the end connected to the interlayer chamber is larger than the diameter of the vent hole at the end connected to the clothes drying chamber; The outer layer of the drying cylinder is provided with an air inlet connected to the interlayer chamber. There are multiple circles of air holes arranged on the wall of the inner layer of the drying cylinder along the axis of the cylinder. The aperture of the air vents on the side close to the bottom of the drying cylinder is larger than the aperture of the air vents on the side close to the cylinder opening of the drying cylinder.

2. A drying cylinder according to claim 1, characterized in that: The vent hole is a tapered hole that gradually narrows toward the inside of the inner tube.

3. A drying cylinder according to claim 2, characterized in that: The inner layer cylinder and the outer layer cylinder are coaxially arranged, and the cylinder diameter of the inner layer cylinder is smaller than the cylinder diameter of the outer layer cylinder.

4. A drying cylinder according to claim 3, characterized in that: The barrel openings of the inner layer barrel and the outer layer barrel are connected, and the barrel opening side of the interlayer chamber is sealed.

5. A drying cylinder according to claim 3, characterized in that: There is a gap between the bottoms of the inner layer cylinder and the outer layer cylinder.

6. A clothes drying device, characterized in that: include, Using the drying cylinder described in any one of claims 1 to 5 above; The air duct, the air outlet end is connected to the interlayer chamber of the drying cylinder, and the air inlet end is connected to the drying chamber of the drying cylinder, forming a circulating air duct; A condenser is provided on the air duct to dehumidify the air flowing through it.

7. The clothes drying device according to claim 6, characterized in that: The air duct includes a main air duct and multiple branch air ducts connected in parallel. The air inlet end of the main air duct is connected to the air outlet end of each branch air duct, the air outlet end of the main air duct is connected to the interlayer cavity between the inner and outer cylinders of the drying cylinder, and the air inlet end of each branch air duct is connected to the drying cavity inside the inner cylinder of the drying cylinder.

8. The clothes drying device according to claim 7, characterized in that: The air inlet end of each branch air duct is connected with the tube mouth end of the clothes drying chamber, and the air outlet end of the main air duct is connected with the tube bottom end of the interlayer chamber.

9. The clothes drying device according to claim 7, characterized in that: The air outlet end of the main air duct is connected to multiple air outlet joints connected in parallel; the outer periphery of the bottom of the outer tube of the drying tube is arranged with multiple openings connected to the interlayer chamber, and the air outlet of each air outlet joint is connected to each opening in a one-to-one correspondence.

10. The clothes drying device according to any one of claims 7 to 9, characterized in that: The air inlet end of the main air duct is connected to the main condenser, the air outlet end of the main condenser is connected to the air inlet end of the main air duct, and the air inlet end of the main condenser is connected to the air outlet end of each branch air duct.

11. The clothes drying device according to claim 10, characterized in that: A heating device for heating the airflow passing through the main air duct and a power device for providing power to the gas flow in the air duct are sequentially arranged along the air flow direction.

12. The clothes drying device according to claim 10, characterized in that: Each branch air duct is respectively provided with a pre-condenser.

Images