Clothes dryer and clothes drying method

Abstract

The application belongs to the technical field of electrical appliances, and particularly relates to a clothes drying machine and a clothes drying method. The clothes drying machine comprises a drum, a first driver, an air duct and a second driver. The first driver is in transmission connection with the drum to drive the drum to rotate. The air duct is arranged in a shell. Two ends of the air duct are respectively in communication with an air inlet end and an air outlet end of the drum. An airflow guide driver is arranged in the air duct. The second driver is connected with the airflow guide driver to drive the airflow guide driver to work. The application can improve the heat exchange efficiency and reliability of a heat pump system, further reduce clothes drying time, improve clothes drying efficiency, and has good practical value.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, specifically relating to a clothes dryer and a clothes drying method. Background Technology

[0002] In order to improve the heat and mass transfer between the moisture on the clothes and the circulating air, the clothes inside the drum need to be constantly tumbled during the drying process of a clothes dryer.

[0003] Existing dryers often cause clothes to pile up and twist together, making them difficult to dry, taking a long time to dry, and leaving clothes with many wrinkles after drying, which affects the user experience. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a clothes dryer and a clothes drying method, aiming to at least partially solve the technical problems in the prior art where clothes tend to pile up and twist together, making them difficult to dry, resulting in long drying times and numerous wrinkles after drying, thus affecting the user experience.

[0005] The technical solution of this application is as follows:

[0006] On the one hand, this application provides a clothes dryer, which is characterized in that the clothes dryer includes:

[0007] roller;

[0008] The first driver is connected to the roller drive to drive the roller to rotate;

[0009] The air duct is connected to the air inlet and air outlet of the roller at both ends, and an airflow guide driver is installed inside the air duct.

[0010] The second driver is connected to the airflow guiding driver to drive the airflow guiding driver to operate.

[0011] The clothes dryer provided in this application includes a drum and a first driver. The first driver and the drum are tractably connected. Therefore, by controlling the rotation of the first driver, the drum can be controlled to rotate forward or backward, thereby improving the phenomenon that clothes inside the drum tend to pile up and twist together. Since the second driver and the airflow guide driver are tractably connected, and the air outlet of the airflow guide driver is connected to the drum, by controlling the rotation of the second driver, the airflow guide driver can be driven to rotate, thereby providing circulating air into the drum and drying the clothes inside the drum.

[0012] Therefore, the dryer provided in this application can achieve frequent alternating forward and reverse rotation of the drum at approximately the same time by controlling the first driver, so that the clothes and air volume in the drum can fully transfer mass and heat, speed up the drying time, reduce wrinkles of the clothes after drying, and improve the drying efficiency, which has great practical value.

[0013] In some embodiments, the dryer further includes:

[0014] The housing, the roller, and the air duct are all disposed within the housing;

[0015] Two or more rolling supports are spaced apart circumferentially within the housing and can rotatably support the circumferential surface of the roller. One of the two or more rolling supports is connected to the first driver.

[0016] When the roller rotates, the output of the first driver outputs power to drive the rolling support connected to the first driver to rotate. The rolling support makes frictional contact with the circumferential surface of the roller to transmit the power of the first driver to the roller to drive the roller to rotate. During the rotation of the roller, the other rolling support only serves to support the roller.

[0017] In some implementations, two rolling supports are provided, each supporting a different side of the roller.

[0018] In some embodiments, the hardness of the circumferential surface of the rolling support connected to the first driver is less than the hardness of the circumferential surfaces of the other rolling supports. Under the weight of the roller, the rolling support connected to the first driver is more easily deformed than the other rolling supports, thereby increasing the contact area between the rolling support connected to the first driver and the circumferential surface of the roller, increasing the friction between the rolling support and the roller, and correspondingly reducing the friction between the other rolling supports and the roller, making it easier to drive the roller to rotate.

[0019] In some embodiments, the rolling support includes:

[0020] The support body is provided with mounting holes;

[0021] The bearing is fitted into the mounting hole of the support body;

[0022] An elastomer is fitted onto the outer peripheral surface of the support, the peripheral surface of the elastomer being in contact with the peripheral surface of the roller to rotatably support the roller, the elastomer being configured as the peripheral surface of the rolling support.

[0023] As a preferred embodiment of this application, the hardness of the circumferential surface of the rolling support connected to the first driver is between 40 and 55 degrees.

[0024] The hardness of the circumferential surface of the remaining rolling support members is above 60 degrees.

[0025] In some embodiments, the housing includes:

[0026] The first support, wherein the first end of the roller is rotatably connected to the first support;

[0027] The second support is disposed opposite to the first support, and two or more of the rolling support members are disposed between the second support and the circumferential surface of the second end of the roller.

[0028] In some implementations, the first driver is disposed on the side of the second support facing the first support.

[0029] In some embodiments, the housing further includes:

[0030] A base, wherein the first support and the second support are respectively provided on both sides of the base, and the second driver is disposed inside the base;

[0031] The volute has one end connected to the end of the base near the first support and the other end resting on the first support. The volute is provided with a receiving cavity, and the airflow guiding actuator is disposed in the receiving cavity.

[0032] In some embodiments, the airflow guiding actuator is a fan located within the receiving cavity.

[0033] A method for drying clothes based on the above-mentioned dryer, characterized in that the method includes:

[0034] Receive dry clothes command;

[0035] The first control command is generated based on the drying command, which controls the first driver to drive the drum to rotate alternately forward and reverse.

[0036] The drying method of the dryer provided in this application can send a first control command to the first driver at intervals, thereby controlling the first driver to realize the frequent alternation of forward and reverse rotation of the drum at close intervals, so that the clothes and air volume in the drum can fully transfer mass and heat, speed up the drying time, reduce wrinkles of clothes after drying, and improve drying efficiency, which has great practical value.

[0037] In some implementations, generating control commands based on the drying instructions to control the first driver to drive the drum to alternately rotate forward and reverse includes:

[0038] The first control command is generated according to the drying command, and after controlling the first driver to drive the drum to rotate forward for a first duration, the first driver is then controlled to drive the drum to rotate in reverse for a second duration, wherein the ratio of the first duration to the second duration is 0.3 to 3.

[0039] In some implementations, both the first duration and the second duration are 20s to 200s.

[0040] In some implementations, the transition time from forward to reverse rotation of the first driver is 2s-20s.

[0041] In some embodiments, the drying method further includes:

[0042] A second control command is generated based on the drying command, controlling the second driver to drive the airflow guide driver. That is, while the drum alternates between forward and reverse rotation, the second driver can be controlled to drive the airflow accelerator to rotate in only one direction, thereby improving the heat exchange efficiency and reliability of the heat pump system, further reducing drying time and increasing drying efficiency, which has significant practical value. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0044] In the attached image:

[0045] Figure 1 This is a structural diagram of a clothes dryer developed by the applicant.

[0046] Figure 2 for Figure 1 A side view diagram;

[0047] Figure 3 This is a schematic diagram of the structure of a clothes dryer according to an embodiment of this application;

[0048] Figure 4 This is a schematic diagram showing the arrangement of the transmission mechanism according to an embodiment of this application;

[0049] Figure 5 for Figure 3 A schematic diagram of the structure of the rolling support component;

[0050] Figure 6 This is a schematic flowchart of a clothes drying method according to an embodiment of this application;

[0051] Figure 7 A schematic diagram of the system upon which the clothes drying method of this application is based;

[0052] Figure 8 This is a schematic diagram of the control curve for the first driver.

[0053] Figure label:

[0054] Driver-100, First belt-200, Second belt-300, Roller-400, Airflow guiding driver-500, Housing-600, First support-601, Second support-602, Base-603, Volute-604, Receiving cavity-605, First driver-700, Second driver-800, Rolling support-900, First rolling support-901, Support body-902, Bearing-903, Elastomer-904, Mounting hole-905, Groove-906, 907-Protrusion, Heat pump system-1000, Processor-1100, Air duct-1200. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0056] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0057] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0058] This application is described below with reference to the accompanying drawings and specific embodiments:

[0059] In order to improve the heat and mass transfer between the moisture on the clothes and the circulating air, the clothes inside the dryer need to be constantly tumbled during the drying process.

[0060] When the rollers rotate at low speed in the same direction, the clothes become fluffy and larger as they dry. In this case, the rotation of the rollers in the same direction can cause the clothes to pile up or even twist together, making it difficult for the clothes to dry, taking a long time to dry, and resulting in more wrinkles after drying, which affects the user experience.

[0061] To address the issue of prolonged drying time and wrinkled clothes caused by the drum rotating in the same direction for an extended period, dryers typically rotate the drum in the opposite direction after a certain period.

[0062] Figure 1 This is a structural diagram of a clothes dryer developed by the applicant. Figure 2 for Figure 1 A side view diagram. Combined with... Figure 1 as well as Figure 2 The dryer includes a driver 100, a first belt 200, a second belt 300, a drum 400, and an airflow guiding driver 500. The driver 100 has two output shafts, namely a first output shaft 101 and a second conveying shaft 102. The first output shaft 101 and the drum 300 are connected by the first belt 200, and the second conveying shaft 102 and the airflow guiding driver 500 are connected by the second belt 300. The first belt 200 and the second belt 300 have different transmission ratios. Through the two belts with different transmission ratios, the drum 400 rotates at a low speed and the airflow guiding driver 500 rotates at a high speed. Since the drum 400 and the airflow guiding driver 500 are driven by the same driver 100, when the drum 400 reverses, the airflow guiding driver 500 also reverses. This causes the airflow guiding driver 500 to be unable to generate enough airflow to exchange heat with the heat exchanger, which may cause the temperature of the dryer's compressor exhaust to rise suddenly, seriously affecting the reliability of the compressor. Long-term use may cause the compressor to shut down for protection or even be damaged. Therefore, roller 400 usually requires a very long time followed by a very short time of reversal, or even no reversal at all.

[0063] The shortcomings of the aforementioned clothes dryers are:

[0064] 1. Reduced reliability of the heat pump system: Because the drum 400 and the airflow guide driver 500 are driven by a single driver 100, the rotation directions of the drum 400 and the airflow guide driver 500 must change simultaneously. When the drum 400 reverses, the airflow guide driver 500 also reverses synchronously. When the airflow guide driver 500 reverses, the airflow is very small or even non-existent, resulting in no airflow for heat exchange in the heat pump system. This causes a sudden jump in the compressor discharge temperature, and prolonged use may cause the compressor to shut down or even be damaged.

[0065] 2. In order to improve the reliability of the heat pump system, the drum 400 is generally controlled to rotate forward for a long time (more than 15 minutes) and rotate backward for a very short time (less than 1 minute), or even the drum 400 does not rotate backward. This causes clothes to pile up and twist together, making it difficult for clothes to dry, resulting in a long drying time and more wrinkles after drying, which affects the user experience.

[0066] To address the aforementioned problems, this application provides a clothes dryer and a drying method. The design concept of this application is as follows: two drives drive the drum and the airflow guide drive to rotate respectively. This allows for separate control of the drum's forward and reverse rotation and the airflow guide drive's rotation. While the drum rotates in both directions, the airflow guide drive can be controlled to rotate only in one direction. This addresses, to a certain extent, the technical problems in the prior art where clothes tend to pile up and twist together, resulting in difficulty drying, long drying times, and numerous wrinkles after drying, as well as reduced reliability of the heat pump system and negative impacts on the user experience.

[0067] Figure 3 This is a schematic diagram of the structure of a clothes dryer according to an embodiment of this application. (In conjunction with...) Figure 3 The dryer includes a drum 400, an airflow guiding driver 500, a first driver 700, a second driver 800, and an air duct 1200. Figure 3 In this embodiment, the roller 400 is rotatably configured. A first driver 700 is driven by the roller 400 to drive the roller 400 to rotate. An air duct 1200 is disposed within the housing 600, with its two ends connected to the air inlet and air outlet of the roller, respectively. An airflow guiding driver 500 is disposed within the air duct 1200. A second driver 800 is driven by the airflow guiding driver 500 to drive the airflow guiding driver 500 to operate. It is understood that the dryer in this embodiment can dry clothes; in other embodiments, the dryer may have functions such as cleaning clothes or washing and drying.

[0068] The clothes dryer provided in this application embodiment has a first driver 700 and a drum 400 that are tractably connected. Therefore, by controlling the rotation of the first driver 700, the drum 400 can be controlled to rotate forward or backward. That is, the drum 400 can alternate between forward and reverse rotation to improve the phenomenon that clothes in the drum 400 tend to pile up and twist together. Since the second driver 800 and the airflow guiding driver 500 are connected, and the airflow guiding driver 500 is disposed in the air duct 1200, with both ends of the air duct 1200 connected to the air inlet and air outlet of the drum 400, by controlling the rotation of the second driver 800, the airflow guiding driver 500 can be driven to rotate to provide circulating air into the drum 400 and dry the clothes in the drum 400.

[0069] In the dryer of this embodiment, the drum 400 and the airflow guide driver 500 are each driven by a corresponding driver, and the corresponding driver can be controlled independently. Therefore, by controlling the first driver 700 during the drying process, the drum 400 can frequently switch between forward and reverse rotation at similar times, so that the clothes and the airflow can fully transfer mass and heat, speed up the drying time, and reduce wrinkles in the dried clothes. By controlling the second driver 800, the airflow guide driver 400 can be made to rotate in only one direction, thereby improving the heat exchange efficiency and reliability of the heat pump system, further reducing the drying time and improving the drying efficiency, which has great practical value.

[0070] Combination Figure 3 The dryer in this embodiment of the application also includes a housing 600, a roller 400 rotatably disposed within the housing 600, and an air duct 1200 disposed within the housing 600, that is, the housing 600 is the carrier of the dryer.

[0071] In this embodiment, the first driver 700 can be rotatably connected to the end of the roller 400 via a transmission structure. Figure 4 This is a schematic diagram showing the arrangement of the transmission mechanism according to an embodiment of this application. (In conjunction with...) Figure 3 as well as Figure 4The transmission mechanism includes two or more rolling support members 900, which are spaced apart circumferentially within the housing 600 along the roller 400. Each of the two or more rolling support members 900 rotatably supports the circumferential surface of the roller 400. One of the rolling support members 900 is connected to a first driver 700. When the roller 400 is rotated, the output of the first driver 700 outputs power, driving the rolling support member 900 connected to the first driver 700 to rotate. The rolling support member 900 makes frictional contact with the circumferential surface of the roller 400 to transmit the power of the first driver 700 to the roller 400, thereby driving the roller 400 to rotate. During the rotation of the roller 400, the remaining rolling support members 900 only serve to support the roller.

[0072] Specifically, in this embodiment, two rolling support members 900 may be provided, each supporting one of the opposite sides of the roller 400. The two rolling support members 900 can be divided into a first rolling support member 901 and a second rolling support member (not shown in the figure). Both the first and second rolling support members 901 are rotatably disposed within the housing 600, and preferably support the circumferential surface of the end of the roller 400. The first rolling support member 901 is an active rolling support member, connected to the output of the first driver 700. When the roller 400 is rotated, the output of the first driver 700 outputs power, driving the first rolling support member 901 to rotate. The first rolling support member 901 makes frictional contact with the circumferential surface of the roller 400, transmitting the power of the first driver 700 to the roller 400, thereby driving the roller 400 to rotate within the housing 600. During the rotation of the roller 400, the second rolling support member only serves to support the roller 400.

[0073] Furthermore, combined Figure 3 as well as Figure 4 In this embodiment of the application, the two rolling support members 900 can be arranged opposite each other on the vertical center line of the roller 400, and both are arranged on the lower circumferential surface of the roller 400. In this way, the weight of the roller 400 can be used to squeeze the first rolling support member 901, thereby increasing the friction between the first rolling support member 901 and the roller 400.

[0074] To improve the driving force of the roller 400, in this embodiment, the hardness of the outer peripheral surface of the first rolling support 901 is less than that of the outer peripheral surface of the second rolling support. Under the gravity of the roller 400, the first rolling support 901 is more easily deformed than the second rolling support, thereby increasing the contact area between the first rolling support 901 and the roller 400 and improving the friction between the first rolling support 901 and the roller. Correspondingly, the friction between the second rolling support and the roller 400 can be reduced, making it easier to drive the roller 400 to rotate.

[0075] Figure 5 for Figure 3 A structural schematic diagram of the rolling support component. (Combined with...) Figure 5 In this embodiment of the application, the rolling support 900 can be a roller, which includes a support body 902, a bearing 903, and an elastic body 904. The support body 902 is provided with a mounting hole 905, the bearing 903 is embedded in the mounting hole 905 of the support body 902, and the elastic body 904 is fitted on the outer peripheral surface of the support body 902. The outer peripheral surface of the elastic body 904 is in contact with the outer peripheral surface of the roller 400. The elastic body 904 is configured as the peripheral surface of the rolling support 900 so that friction is generated between the rolling support 900 and the peripheral surface of the roller 400.

[0076] In this embodiment, the outer diameter D of the first rolling support 901 can be between 20mm and 100mm. Since the first rolling support 901 is more easily compressed than the second rolling support, the hardness of the elastic body 904 of the first rolling support 901 is recommended to be between 40 and 55 degrees. Its material is preferably a material with a high coefficient of friction with the material of the roller 400 (stainless steel), such as silicone or rubber. Because the first rolling support 901 has lower hardness, it is easily deformed under the gravity of the roller 400, which increases the contact area and improves the friction between the first rolling support 901 and the roller 400.

[0077] Accordingly, in this embodiment, the outer diameter D of the second rolling support can be the same as or different from the outer diameter of the first rolling support 901, and no limitation is imposed here. The elastomer 904 of the second rolling support has a relatively high hardness, and it is recommended that the hardness of the elastomer 904 of the second rolling support be above 60 degrees. The elastomer 904 of the second rolling support can be made of a material with a low coefficient of contact friction with the material (stainless steel) of the roller 400, such as POM (polyformaldehyde), nylon, etc., to reduce the rolling friction coefficient between the second rolling support and the circumferential surface of the roller 400.

[0078] Furthermore, combined Figure 5In this embodiment, the bearing 903 can be assembled in the mounting hole 905 in the support body 902 by interference fit, and the outer peripheral surface of the support body 902 can be provided with one or more annular grooves 906. Correspondingly, the inner ring of the elastic body 903 is provided with a protrusion 907 that can be embedded in the groove 906, so as to realize the assembly of the elastic body 903 on the support body 902.

[0079] Combination Figure 3 as well as Figure 4 In this embodiment of the application, the housing 600 includes a first support 601 and a second support 602, which are arranged opposite to each other. The two ends of the roller 400 are supported by the first support 601 and the second support 602 respectively.

[0080] Specifically, the first end of the roller 400 is rotatably connected to the first support 601 via a bearing, and the aforementioned transmission mechanism is provided between the second end of the roller 400 and the second support 601, thereby enabling the second support 601 to support the second end of the roller 400.

[0081] Furthermore, the second support 602 has a mounting portion on its side facing the first support 601 that mates with the rolling support 900. The first driver 700 is mounted on the mounting portion corresponding to the first rolling support 901, and the first rolling support 901 is fitted onto the output shaft of the first driver 700. A support shaft (not shown in the figure) is mounted on the mounting portion corresponding to the second rolling support, and the second rolling support is rotatably fitted onto the corresponding support shaft. That is, in this embodiment, each rolling support 900 is suspended, so that each rolling support 900 only experiences friction with the roller 400, thereby reducing the resistance to rotation of the rolling support 900, increasing the output power of the rolling support 900, and allowing the roller 400 to rotate more smoothly.

[0082] The first driver 700 in this application embodiment can be an induction driver or a brushless DC driver, and the first driver 700 can be equipped with a gear reducer to accelerate the airflow and heat and mass transfer of the clothes in the drum 400, speed up the drying time and reduce wrinkles after drying.

[0083] It should be noted that, if the internal space of the housing 600 allows, there may be two or more first rolling support members 901 in this embodiment of the application. Each first rolling support member 901 is driven by a first driver 700. Alternatively, two or more first rolling support members 901 may rotate synchronously through a driver 700 in conjunction with a belt drive to increase the driving force on the roller 400. Correspondingly, there may also be two or more second rolling support members. This embodiment of the application does not limit this.

[0084] It should also be noted that in the embodiments of this application, each rolling support 900 is suspended within the housing 600, and the circumferential surface of each rolling support 900 and the circumferential surface of the roller 400 are in direct contact for transmission. In other embodiments, the circumferential surface of each rolling support 900 and the circumferential surface of the roller 400 can also be indirectly transmitted through other transmission components, such as meshing gears, etc., which are not limited here.

[0085] Combination Figure 3 The housing 600 in this embodiment of the application also includes a base 603 and a volute 604. The base 603 has the first support 601 and the second support 602 respectively on both sides. One end of the volute 604 is connected to the end of the base 603 near the first support 601, and the other end of the volute 604 overlaps the side of the first support 601 facing away from the second support 602. This is the prior art, and will not be described in detail in this embodiment of the application.

[0086] Combination Figure 3 In this embodiment of the application, the volute 604 is provided with a receiving cavity 605, and the aforementioned airflow guiding driver 400 is provided in the receiving cavity 605. The second driver 800 is provided in the base 603. By controlling the second driver 800, the airflow guiding driver 400 can be driven to rotate, so that the hot air generated by the heat pump system 1000 in the base 603 is circulated and transported to the drum 400 through the volute 604 for the drying process.

[0087] Since the drum 400 and the airflow guide driver 500 are both driven by a corresponding driver, the airflow guide driver 400 can rotate in only one direction to improve the heat exchange efficiency and reliability of the heat pump system, thereby further reducing drying time and improving drying efficiency, which has great practical value.

[0088] In this embodiment, the end of the roller 400 near the first support 601 can be the air inlet, and the end of the roller 400 near the second support 602 can be the air outlet. The air duct 1200 can be disposed on the base 603, including a channel for accommodating the heat pump system and a channel inside the volute 604. That is, the end where the volute 604 and the roller 400 are connected, and the end where the base 603 and the second support 602 are connected can be configured as the two ends of the air duct 1200. In addition, each driver can be a motor, and the airflow guiding driver can be a fan located in the receiving cavity 605 of the volute 604.

[0089] Based on the above-described clothes dryer, this application also provides a clothes drying method. Figure 6 This is a schematic flowchart of a clothes drying method according to an embodiment of this application. Figure 7 This is a schematic diagram of the system upon which the clothes-drying method of this application is based. Figure 8This is a schematic diagram of the control curve for the first driver, combined with... Figure 6 , Figure 7 as well as Figure 8 The drying method includes:

[0090] S1: Obtaining drying instructions: Drying instructions can be output by the user through the control panel on the dryer, or the user can output drying instructions by remote control. The drying instructions can be obtained by the processor 1100 set in the dryer.

[0091] S2: Generate a first control command based on the drying command to control the first driver 700 to drive the roller 400 to alternately rotate forward and reverse: The first control command is sent from the processor 1100 to the first driver 700 to control the first driver 700 to drive the roller 400 to rotate forward for a first time t2, and then control the first driver 700 to drive the roller 400 to rotate in reverse for a second time t1. This process is automatic and does not require user operation.

[0092] The clothes drying method of the dryer provided in this application embodiment can send a first control command to the first driver 700 at intervals, thereby controlling the first driver 700 to realize the frequent alternation of forward and reverse rotation of the drum 400 at close intervals, so that the clothes and air volume in the drum 400 can fully transfer mass and heat, speed up the drying time, reduce wrinkles of clothes after drying, and improve drying efficiency, which has great practical value.

[0093] In this embodiment of the application, the ratio of the first time t2 to the second time t1 can be 0.3 to 3. Preferably, it is recommended that the first time t2 for forward rotation and the second time t1 for reverse rotation of the first driver 700 can both be 20s to 200s. The transition time t3 from forward rotation to reverse rotation of the first driver 700 can be set according to the performance of the driver, and it can be set to 2s-20s.

[0094] In this embodiment of the application, the output rotational speed n of the first driver 700 can be determined by equation 1), which is:

[0095]

[0096] Where n is the output speed of the first driver; if the first driver has a gear reducer, then it is the output speed after reduction; N g The recommended rotational speed for the drum is 40 rpm to 60 rpm; D g D is the outer diameter of the drum, which is closely related to the capacity of the dryer and is usually 500mm to 600mm; D is the outer diameter of the drum, and its recommended value is 20mm to 100mm.

[0097] Therefore, through calculation, the output speed n of the first driver is usually 200rpm to 1800rpm, and the output power of the first driver can be 30W to 100W.

[0098] Furthermore, during the process of the processor 1100 controlling the first driver 700 to execute the first control instruction, the processor 1100 also generates a second control instruction to control the second driver 800 to drive the airflow guiding driver 500 to work. That is, while the drum 400 alternates between forward and reverse rotation, the second driver 800 can be controlled to drive the airflow guiding driver 500 to rotate in only one direction, thereby improving the heat exchange efficiency and reliability of the heat pump system, further reducing drying time and improving drying efficiency, which has great practical value.

[0099] The beneficial effects of the clothes dryer and drying method provided in this application are as follows:

[0100] 1. By controlling the forward and reverse rotation of the first driver 700, the forward and reverse rotation of the drum 400 can be alternated, which can improve the air volume and heat and mass transfer of clothes, speed up the drying time and reduce wrinkles after drying.

[0101] 2. The second driver 800 can drive the airflow guide driver 500 to rotate in one direction, providing the necessary airflow for heat exchange in the heat pump system, reducing the temperature impact on the heat pump system due to the reduced airflow provided by the airflow guide driver, and improving the reliability of the heat pump system.

[0102] 3. In addition, the belt transmission mechanism of the original system was eliminated, and the driver with dual output shafts at the front and rear was replaced with a driver with a single output shaft at the front. This can reduce the output power of the driver, simplify the system structure, and reduce costs to a certain extent.

[0103] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0104] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0105] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0106] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0108] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0109] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A clothes dryer, characterized in that, The clothes dryer includes: Roller (400); The first driver (700) is connected to the roller (400) in a transmission connection to drive the roller (400) to rotate; The air duct (1200) is connected to the air inlet and air outlet of the roller (400) at both ends, and an airflow guide driver (500) is provided inside the air duct (1200). The second driver (800) is connected to the airflow guiding driver (500) to drive the airflow guiding driver (500) to work; The dryer also includes: The housing (600), the roller (400) and the air duct (1200) are all disposed within the housing (600); The housing (600) includes: The first support (601) is rotatably connected to the first end of the roller (400); The second support (602) is disposed opposite to the first support (601); Two or more rolling supports (900) are arranged circumferentially within the housing (600) along the roller (400) and can rotatably support the circumferential surface of the roller (400). One of the two or more rolling supports (900) is connected to the first driver (700). Two rolling supports are arranged opposite each other along the vertical center line of the roller, and both are located on the lower circumferential surface of the roller. The hardness of the circumferential surface of the rolling support (900) connected to the first driver (700) is less than the hardness of the circumferential surface of the other rolling supports (900). The two rolling support members are divided into a first rolling support member (901) and a second rolling support member; The second support (602) has a mounting part that cooperates with the rolling support (900) on the side facing the first support (601), and the first driver (700) is provided on the mounting part corresponding to the first rolling support (901). The first rolling support (901) is fitted on the output shaft of the first driver (700). A support shaft is provided on the mounting part corresponding to the second rolling support, and the second rolling support is rotatably mounted on the corresponding support shaft.

2. The clothes dryer according to claim 1, characterized in that, Two rolling support members (900) are provided, and the two rolling support members (900) respectively support the opposite sides of the roller (400).

3. The clothes dryer according to claim 1, characterized in that, The rolling support (900) includes: The support body (902) is provided with mounting holes (905); The bearing (903) is embedded in the mounting hole (905) of the support body (902); An elastomer (904) is fitted onto the outer peripheral surface of the support (902), the peripheral surface of the elastomer (904) being in contact with the peripheral surface of the roller (400) to rotatably support the roller (400), the elastomer (904) being configured as the peripheral surface of the rolling support (900).

4. The clothes dryer according to claim 3, characterized in that, The hardness of the circumferential surface of the rolling support (900) connected to the first driver (700) is between 40 and 55 degrees. The hardness of the circumferential surface of the remaining rolling support (900) is above 60 degrees.

5. The clothes dryer according to any one of claims 1-4, characterized in that, Two or more of the rolling support members (900) are provided between the second support (602) and the circumferential surface of the second end of the roller (400).

6. The clothes dryer according to claim 5, characterized in that, The first driver (700) is disposed on the side of the second support (602) facing the first support (601).

7. The clothes dryer according to claim 5, characterized in that, The housing (600) further includes: A base (603) is provided with a first support (601) and a second support (602) on both sides of the base (603), and a second driver (800) is disposed inside the base (603); The volute (604) has one end connected to the end of the base (603) near the first support (601) and the other end attached to the first support (601). The volute (604) is provided with a receiving cavity (605), and the airflow guide actuator (500) is provided in the receiving cavity (605).

8. The clothes dryer according to claim 7, characterized in that, The airflow guiding actuator (500) is a fan located within the receiving cavity (605).

9. A method for drying clothes based on the dryer according to any one of claims 1-8, characterized in that, The clothes drying method includes: Receive dry clothes command; The first control command is generated according to the drying command, which controls the first driver (700) to drive the roller (400) to rotate alternately forward and reverse.

10. The drying method according to claim 9, characterized in that, The step of generating control commands based on the drying instructions to control the first driver (700) to drive the drum (400) to alternately rotate forward and reverse includes: The process involves generating a control command based on the drying instruction, controlling the first driver (700) to drive the roller (400) to rotate forward for a first duration, and then controlling the first driver (700) to drive the roller (400) to rotate in reverse for a second duration, wherein the ratio of the first duration to the second duration is 0.3 to 3.

11. The drying method according to claim 10, characterized in that, Both the first duration and the second duration are 20s to 200s.

12. The drying method according to any one of claims 9-11, characterized in that, The transition time from forward to reverse rotation of the first driver (700) is 2 s - 20 s.

13. The drying method according to claim 9, characterized in that, The drying method also includes: A second control command is generated based on the drying command, which controls the second driver (800) to drive the airflow guide driver (500) to work.

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