A drying drum and a dryer

Abstract

This invention relates to the field of household appliance technology, and more particularly to a drying drum and a dryer. The drying drum is installed in a dryer to facilitate the drying of items. The drying drum includes an outer drum and an inner drum. The outer drum has a first air inlet configured to communicate with an air source generator. The inner drum forms a receiving cavity configured to receive the items to be dried. The inner drum is disposed within the outer drum, and the inner and outer drums are spaced apart. The gap between the inner and outer drums forms an air intake channel, which communicates with the first air inlet. A first air inlet hole is provided along the circumference of the inner drum, allowing air to enter the inner drum circumferentially. This drying drum enables simultaneous air intake along the length of the inner drum, ensuring uniform heating and drying of items at any position within the inner drum, improving drying efficiency, and enhancing the circulation efficiency of hot air within the inner drum, thus reducing drying time. This dryer effectively improves drying efficiency through the aforementioned drying drum.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more particularly to a drying drum and a dryer. Background Technology

[0002] With the development of technology, household appliances are becoming increasingly widely used in people's lives, such as washing machines. However, after washing, clothes need a long time to dry completely, which is time-consuming. In rainy weather or winter, drying clothes takes a long time and is prone to secondary pollution. Currently, people generally use dryers to directly dry their clothes.

[0003] In existing technologies, the drum of a dryer is generally a single-layer structure. The dryer uses circulating airflow to remove the humid air from the clothes inside the drum. The direction of the circulating airflow is generally unidirectional and fixed, typically including two methods: air inlet at the rear of the drum and air outlet at the front of the drum, or air inlet at the front of the drum and air outlet at the rear of the drum. Both methods can blow circulating hot air into the drum to dry the clothes. However, because there are many clothes in the drum, the drying process often proceeds with the clothes closer to the air inlet drying first, while those closer to the middle and the air outlet require a longer drying time. This longer drying time increases the overall usage time and reduces the user experience.

[0004] To solve the above problems, there is an urgent need to provide a drying drum and a dryer. Summary of the Invention

[0005] One objective of this invention is to provide a drying cylinder that achieves uniform air intake within the cylinder, thereby improving drying efficiency.

[0006] Another objective of this invention is to provide a dryer that, through the aforementioned drying drum, achieves uniform air intake within the drum, thereby improving drying efficiency.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A drying drum, disposed in a dryer, the drying drum comprising:

[0009] An outer cylinder, wherein a first air inlet is provided on the outer cylinder, and the first air inlet is configured to communicate with an air source generating device; and

[0010] The inner cylinder forms a receiving cavity configured to receive items to be dried. The inner cylinder is disposed within the outer cylinder, and the inner cylinder and the outer cylinder are spaced apart. The gap between the inner cylinder and the outer cylinder forms an air intake channel, which communicates with the first air inlet. A first air inlet hole is provided along the circumference of the inner cylinder to allow air to enter the inner cylinder circumferentially.

[0011] This drying drum allows for simultaneous air intake along the length of the inner drum, ensuring that items placed anywhere within the drum are heated evenly and dried efficiently. Simultaneously, the circumferential air intake within the inner drum improves the circulation efficiency of the hot air, thus reducing drying time.

[0012] As an optional embodiment, the inner cylinder includes:

[0013] First end wall and second end wall; and

[0014] The sidewall is arranged along the circumference of the inner cylinder and its two ends are respectively connected to the first end wall and the second end wall. The sidewall is provided with a plurality of first air inlets.

[0015] Hot air enters through the first air inlet, flows through the air intake channel, and then enters the receiving cavity through the first air intake hole, thereby circulating the hot air in the receiving cavity of the inner drum to dry the clothes. Multiple first air intake holes allow for circumferential air intake on the side walls, which helps to increase the air intake area and allows clothes located at any position in the inner drum to be heated and dried simultaneously, effectively reducing drying time.

[0016] As an alternative, the multiple first air inlets are divided into multiple groups, with each group of first air inlets arranged parallel to each other along the circumference of the sidewall and spaced apart, so that airflow can flow evenly into the inner drum through the regularly arranged first air inlets to dry clothes.

[0017] As an alternative, the spacing between adjacent sets of the first air inlets gradually decreases along the direction away from the first air inlet. This results in a larger spacing between adjacent sets of the first air inlets near the first end wall, reducing circumferential air intake near the first end wall. The spacing then gradually decreases along the direction away from the first end wall. This structure gradually increases circumferential air intake near the first end wall, ensuring uniform airflow within the cavity along the length of the inner drum. This allows clothes in any position within the cavity to be dried simultaneously, improving drying efficiency.

[0018] As an optional solution, the drying drum further includes:

[0019] The central cylinder is configured to allow air to enter the receiving cavity from the inner cylinder, which helps to further increase the air intake, improve drying efficiency, and reduce the drying time of clothes.

[0020] As an optional solution, the inner drum is provided with a second air inlet, and the central drum is disposed on the inner drum, with one end of the central drum communicating with the second air inlet. The central drum has multiple second air inlets to connect it to the receiving cavity. The central drum can input hot air into the inner drum from the center of the receiving cavity, facilitating drying of clothes from the center of the inner drum. This ensures that the clothes in the inner drum are heated from both the inside and outside, further improving drying efficiency.

[0021] As an alternative, the multiple second air inlets are divided into multiple groups, with each group of second air inlets arranged parallel to and spaced apart along the circumference of the central cylinder, so as to facilitate the uniform introduction of hot air into the center of the receiving cavity.

[0022] As an alternative, the inner cylinder is provided with a third air inlet, which connects the air intake channel to the receiving cavity, allowing air to enter from both the end face and circumference of the inner cylinder simultaneously, thereby increasing the air intake efficiency of the inner cylinder and improving the flow of hot air in the inner cylinder to reduce the drying time.

[0023] As an optional solution, the inner drum includes a first end wall and a side wall. The side wall is arranged circumferentially along the inner drum, and the end of the side wall near the first air inlet is connected to the first end wall. The first end wall has a conical structure, and the size of the first end wall gradually decreases in the direction away from the side wall, so that the first end wall forms an inclined surface. The inclined surface is parallel to the corresponding position of the outer drum and is spaced apart to form a guide channel. This allows the hot air to be evenly dispersed into the air inlet channel under the guiding effect of the first guide channel after air enters through the first air inlet, thereby helping to ensure that the clothes in the inner drum are evenly heated and dried.

[0024] A dryer includes a drying drum as described above, which allows clothes in the inner drum to be dried evenly, thereby improving drying efficiency and reducing drying time.

[0025] The beneficial effects of this invention are as follows:

[0026] This invention provides a drying cylinder, which is installed in a dryer to facilitate the drying of items. The drying cylinder includes an outer cylinder and an inner cylinder. The outer cylinder has a first air inlet configured to communicate with an air source generator. The inner cylinder forms a receiving cavity configured to hold the items to be dried. The inner cylinder is disposed within the outer cylinder, and the two cylinders are spaced apart. The gap between the inner and outer cylinders forms an air intake channel, which communicates with the first air inlet. A first air inlet hole is also provided along the circumference of the inner cylinder, allowing air to enter the inner cylinder circumferentially. This drying cylinder enables simultaneous air intake along the length of the inner cylinder, ensuring uniform heating and drying of items at any position within the inner cylinder, thus improving drying efficiency. Simultaneously, the circumferential air intake of the inner cylinder improves the circulation efficiency of hot air within the inner cylinder, reducing drying time and enhancing user experience.

[0027] The present invention also provides a dryer, which, through the above-mentioned drying cylinder, achieves the effect of uniform air intake inside the cylinder and improves drying efficiency. Attached Figure Description

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

[0029] Figure 1 This is a schematic diagram of the structure of the drying cylinder provided in Embodiment 1 of the present invention;

[0030] Figure 2 This is a cross-sectional structural diagram of the drying cylinder provided in Embodiment 1 of the present invention;

[0031] Figure 3 This is a cross-sectional structural diagram of the drying cylinder provided in Embodiment 2 of the present invention.

[0032] The markings in the image are as follows:

[0033] 100 - Outer cylinder; 110 - First air inlet; 120 - Air outlet;

[0034] 200 - Inner cylinder; 210 - Receiving cavity; 220 - First end wall; 221 - Second air inlet; 222 - Inclined surface; 230 - Second end wall; 240 - Side wall; 241 - First air inlet hole;

[0035] 300 - Intake passage;

[0036] 400 - Center cylinder; 410 - Second air inlet;

[0037] 500-flow channel. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the structural components relevant to the present invention, not the complete structure.

[0039] In the description of this invention, unless otherwise explicitly 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 connection of the internal structures of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly 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.

[0041] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0042] Example 1

[0043] With the development of technology, household appliances are becoming increasingly widely used in people's lives, such as washing machines. However, after washing, clothes need a long time to dry completely, which is time-consuming. In rainy weather or winter, drying clothes takes a long time and is prone to secondary pollution. Currently, people generally use dryers to directly dry their clothes.

[0044] In existing technologies, the drum of a dryer is generally a single-layer structure. The dryer uses circulating airflow to remove the humid air from the clothes inside the drum. The direction of the circulating airflow is generally unidirectional and fixed, typically including two methods: air inlet at the rear of the drum and air outlet at the front of the drum, or air inlet at the front of the drum and air outlet at the rear of the drum. Both methods can blow circulating hot air into the drum to dry the clothes. However, because there are many clothes in the drum, the drying process often proceeds with the clothes closer to the air inlet drying first, while those closer to the middle and the air outlet require a longer drying time. This longer drying time increases the overall usage time and reduces the user experience.

[0045] like Figure 1 and Figure 2 As shown, to solve the above problems, this embodiment provides a drying drum, which is installed in a dryer to facilitate the drying of items to be dried. Exemplarily, the items to be dried can be clothing, shoes, or any other items; for ease of explanation, this embodiment uses clothing as an example. The drying drum includes an outer drum 100 and an inner drum 200. A first air inlet 110 is provided on the outer drum 100, configured to communicate with an air source generating device. The inner drum 200 forms a receiving cavity 210, configured to receive clothing. The inner drum 200 is disposed within the outer drum 100, and the inner drum 200 and the outer drum 100 are spaced apart. The gap between the inner drum 200 and the outer drum 100 forms an air intake channel 300, which communicates with the first air inlet 110. A first air inlet hole 241 is provided along the circumference of the inner drum 200 to allow air to enter the inner drum 200 circumferentially. This drying drum allows for simultaneous air intake along the length of the inner drum 200, ensuring that clothes at any position within the inner drum 200 are heated and dried evenly, thus improving drying efficiency. Simultaneously, the circumferential air intake of the inner drum 200 enhances the circulation efficiency of hot air within the inner drum 200, reducing drying time and improving user experience.

[0046] Specifically, because the airflow near the first air inlet 110 has a high temperature and low humidity, the high-temperature, low-humidity airflow exchanges heat with the low-temperature, high-humidity clothing near the first air inlet 110. The temperature of the clothing near the first air inlet 110 increases and the humidity decreases. As the airflow circulates, the heat exchange continues. Therefore, clothing far from the first air inlet 110 can only be dried later. The entire drying process takes a long time. In this embodiment, through the structure of the inner drum 200 and the outer drum 100, the circumferential air intake of the inner drum 200 is realized, which efficiently increases the temperature inside the entire inner drum 200 and realizes simultaneous drying of all positions in the inner drum 200.

[0047] like Figure 2 As shown, for example, the inner cylinder 200 and the outer cylinder 100 are cylindrical structures. This structure is simple, and the inner cylinder 200 is in a continuous rotating state during the drying process. The cylindrical structure can keep the stress in all directions as uniform as possible during the rotation of the inner cylinder 200, so as to facilitate the rotation of the inner cylinder 200 and help ensure the service life of the drying cylinder.

[0048] This embodiment also provides a dryer, which uses the aforementioned drying drum to dry clothes evenly inside the drum, thereby improving drying efficiency and reducing drying time.

[0049] like Figure 2As shown, at the same time, a third air inlet is provided on the inner cylinder 200. The third air inlet connects the air inlet channel 300 with the receiving cavity 210, so that air can enter the inner cylinder 200 at the end face and circumference at the same time, thereby increasing the air intake efficiency of the inner cylinder 200 and improving the flow of hot air in the inner cylinder 200, so as to reduce the drying time.

[0050] Please continue reading Figure 2 As an optional solution, the inner drum 200 includes a first end wall 220, a second end wall 230, and a side wall 240. The side wall 240 is arranged circumferentially around the inner drum 200, and its two ends are respectively connected to the first end wall 220 and the second end wall 230. Multiple first air inlets 241 are provided on the side wall 240, allowing hot air to enter from the first air inlet 110, then flow through the air intake channel 300, and finally enter the receiving cavity 210 through the first air inlets 241, thus circulating the hot air in the receiving cavity 210 of the inner drum 200 to dry the clothes. The multiple first air inlets 241 allow air to enter from multiple points circumferentially around the side wall 240, which helps increase the air intake area and allows clothes located at any position in the inner drum 200 to be heated and dried simultaneously, effectively reducing drying time. For example, in this embodiment, the first end wall 220 is the end close to the first air inlet 110, the second end wall 230 is the end away from the air inlet, and the third air inlet is disposed on the first end wall 220, so that the first end wall 220 close to the first air inlet 110 is directly connected to the airflow.

[0051] Please continue reading Figure 2 For example, the first end wall 220 and the second end wall 230 are circular structures, and the side wall 240 is a rectangular structure. The rectangular side wall 240 is folded to form a cylinder, and the two ends of the cylinder are connected to form a cylindrical shape. The first end wall 220 and the second end wall 230 are respectively disposed at the two ends of the cylindrical shape formed by folding the side wall 240, thereby forming a closed inner cylinder 200, and the inner cylinder 200 is a hollow structure, forming a receiving cavity 210.

[0052] like Figure 2 As shown, furthermore, the multiple first air inlets 241 are divided into multiple groups, with each group of first air inlets 241 arranged parallel to each other and spaced apart along the circumference of the side wall 240, so that airflow can flow evenly into the inner drum 200 through the regularly arranged first air inlets 241 to dry clothes. It can be understood that the distance between each group of first air inlets 241 can be equal or unequal, and the operator can set it arbitrarily according to the needs.

[0053] like Figure 2As shown, in a preferred embodiment, the spacing between adjacent sets of first air inlets 241 gradually decreases along the direction away from the first air inlet 110. This results in a larger spacing between adjacent sets of first air inlets 241 on the side closer to the first end wall 220, leading to less circumferential air intake near the first end wall 220. Furthermore, the spacing between adjacent sets of first air inlets 241 gradually decreases along the direction away from the first end wall 220. This structure gradually increases circumferential air intake near the first end wall 220, ensuring uniform airflow in the receiving cavity 210 along the length of the inner cylinder 200. This allows clothes in any position within the receiving cavity 210 to be dried simultaneously, and also improves drying efficiency.

[0054] like Figure 2 As shown, as an optional solution, the drying drum also includes a central drum 400, which can introduce air into the receiving cavity 210 from the inner drum 200, which helps to further increase the air intake, improve drying efficiency, and reduce the drying time of clothes.

[0055] Please continue reading Figure 2 Specifically, the inner cylinder 200 has a second air inlet 221, and the central cylinder 400 is disposed on the inner cylinder 200, with one end of the central cylinder 400 communicating with the second air inlet 221. The central cylinder 400 has multiple second air inlets 410 to connect the central cylinder 400 to the receiving cavity 210. The central cylinder 400 can input hot air into the inner cylinder 200 from the center of the receiving cavity 210, facilitating the drying of clothes from the center of the inner cylinder. This ensures that the clothes in the inner cylinder 200 are heated from both the inside and outside, further improving drying efficiency. For example, the multiple second air inlets 410 are divided into multiple groups, with each group of second air inlets 410 arranged parallel and spaced along the circumference of the central cylinder 400, so as to uniformly introduce hot air into the center of the receiving cavity 210.

[0056] like Figure 2 As shown, it can be understood that the drying drum also includes an inner drum 200 and an outer drum 100 connected to an air outlet 120, so that the hot air in the inner drum 200 can circulate, so that the first air inlet 110 can continuously output hot air to dry clothes and improve drying efficiency.

[0057] Example 2

[0058] This embodiment provides a drying cylinder, the structure of which is basically the same as that of Embodiment 1. For convenience, only the differences from Embodiment 1 are described.

[0059] like Figure 3As shown, in order to improve the uniformity of circumferential air intake in the inner drum 200, the inner drum 200 includes a first end wall 220 and a side wall 240. The side wall 240 is arranged along the circumference of the inner drum 200, and the end of the side wall 240 near the first air inlet 110 is connected to the first end wall 220. The first end wall 220 has a conical structure, and the size of the first end wall 220 gradually decreases in the direction away from the side wall 240, so that the first end wall 220 forms an inclined surface 222. The inclined surface 222 is parallel to the corresponding position of the outer drum 100 and is spaced apart to form a guide channel 500. So that after air enters through the first air inlet 110, the hot air is evenly dispersed into the air intake channel 300 under the guiding effect of the first guide channel 500, which helps to ensure that the clothes in the inner drum 200 are evenly heated and dried.

[0060] Note that the foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drying drum, characterized in that, A drying cylinder is arranged in a dryer, and the drying cylinder comprises: an outer cylinder (100) having a first air inlet (110) configured to communicate with an air source generating device; and an inner cylinder (200) forming a containing cavity (210) configured to contain articles to be dried, the inner cylinder (200) being arranged in the outer cylinder (100) and spaced apart from the outer cylinder (100), a gap between the inner cylinder (200) and the outer cylinder (100) forming an air inlet channel (300) in communication with the first air inlet (110), the inner cylinder (200) having a first air inlet hole (241) formed along a circumference of the inner cylinder (200) to allow air to enter the inner cylinder (200) from the circumference. The drying cylinder further comprises: a center cylinder (400) configured to supply air to the containing cavity (210) in the inner cylinder (200); and the inner cylinder (200) has a second air inlet (221) formed thereon, the center cylinder (400) is arranged on the inner cylinder (200), and one end of the center cylinder (400) is in communication with the second air inlet (221), the center cylinder (400) has a plurality of second air inlet holes (410) formed thereon to allow the center cylinder (400) to communicate with the containing cavity (210).

2. The drying drum according to claim 1, characterized in that, The inner cylinder (200) comprises: a first end wall (220) and a second end wall (230); and a side wall (240) arranged along a circumference of the inner cylinder (200) and connected to the first end wall (220) and the second end wall (230) at both ends, the side wall (240) having a plurality of first air inlet holes (241) formed thereon.

3. The drying drum according to claim 2, characterized in that, The plurality of first air inlet holes (241) are divided into a plurality of groups, and each group of first air inlet holes (241) is arranged in parallel and spaced apart along the circumference of the side wall (240).

4. The drying drum according to claim 3, characterized in that, In a direction away from the first air inlet (110), the distance between two adjacent groups of first air inlet holes (241) gradually decreases.

5. The drying drum of claim 1, wherein, The plurality of second air inlet holes (410) are divided into a plurality of groups, and each group of second air inlet holes (410) is arranged in parallel and spaced apart along the circumference of the center cylinder (400).

6. The drying drum of claim 1, wherein, The inner cylinder (200) has a third air inlet formed thereon, the third air inlet allowing the air inlet channel (300) to communicate with the containing cavity (210).

7. The drying drum of claim 1, wherein, The inner cylinder (200) comprises a first end wall (220) and a side wall (240), the side wall (240) is arranged along the circumference of the inner cylinder (200), and one end of the side wall (240) close to the first air inlet (110) is connected with the first end wall (220), the first end wall (220) is a conical structure, and the size of the first end wall (220) along the direction away from the side wall (240) gradually decreases, so that the first end wall (220) forms an inclined surface (222), the inclined surface (222) is arranged in parallel and spaced apart with the corresponding position of the outer cylinder (100) and forms a flow guide channel (500).

8. A dryer characterized by, The drying cylinder comprises the drying cylinder according to any one of claims 1-7.

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